Add m-esr52 at 52.6.0

57 files changed, 13981 insertions, 0 deletions

diff --git a/nsprpub/pr/include/md/Makefile.in b/nsprpub/pr/include/md/Makefile.in
new file mode 100644
index 0000000000..383c092cf8
--- /dev/null
+++ b/nsprpub/pr/include/md/Makefile.in
@@ -0,0 +1,42 @@
+# 
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#! gmake
+
+MOD_DEPTH	= ../../..
+topsrcdir	= @top_srcdir@
+srcdir		= @srcdir@
+VPATH		= @srcdir@
+
+include $(MOD_DEPTH)/config/autoconf.mk
+
+# The .cfg files need to be exported and installed to support
+# cross-compilation.
+CONFIGS = $(wildcard $(srcdir)/*.cfg)
+
+include $(topsrcdir)/config/rules.mk
+
+export:: $(MDCPUCFG_H)
+	$(INSTALL) -m 444 $(CONFIGS) $(dist_includedir)/md
+	$(INSTALL) -m 444 $(srcdir)/$(MDCPUCFG_H) $(dist_includedir)
+	mv -f $(dist_includedir)/$(MDCPUCFG_H) $(dist_includedir)/prcpucfg.h
+
+install::
+	$(NSINSTALL) -D $(DESTDIR)$(includedir)/md
+	$(NSINSTALL) -t -m 644 $(CONFIGS) $(DESTDIR)$(includedir)/md
+	$(NSINSTALL) -t -m 644 $(srcdir)/$(MDCPUCFG_H) $(DESTDIR)$(includedir)
+	mv -f $(DESTDIR)$(includedir)/$(MDCPUCFG_H) $(DESTDIR)$(includedir)/prcpucfg.h
+
+release:: export
+	@echo "Copying machine-dependent prcpucfg.h"
+	@if test -z "$(BUILD_NUMBER)"; then \
+		echo "BUILD_NUMBER must be defined"; \
+		false; \
+	fi
+	@if test ! -d $(RELEASE_INCLUDE_DIR); then \
+		rm -rf $(RELEASE_INCLUDE_DIR); \
+		$(NSINSTALL) -D $(RELEASE_INCLUDE_DIR);\
+	fi
+	cp $(srcdir)/$(MDCPUCFG_H) $(RELEASE_INCLUDE_DIR)/prcpucfg.h
diff --git a/nsprpub/pr/include/md/_aix.h b/nsprpub/pr/include/md/_aix.h
new file mode 100644
index 0000000000..3daf14fac0
--- /dev/null
+++ b/nsprpub/pr/include/md/_aix.h
@@ -0,0 +1,225 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_aix_defs_h___
+#define nspr_aix_defs_h___
+
+#include <sys/types.h>
+#if defined(_PR_PTHREADS) || defined(PTHREADS_USER)
+#include <pthread.h>
+#endif
+
+/*
+ * To pick up fd_set and the poll events.
+ */
+#include <sys/select.h>
+#include <sys/poll.h>
+
+/*
+ * Internal configuration macros
+ */
+
+#define PR_LINKER_ARCH          "aix"
+#define _PR_SI_SYSNAME		    "AIX"
+#define _PR_SI_ARCHITECTURE	    "rs6000"
+#define PR_DLL_SUFFIX		    ".so"
+
+#define _PR_VMBASE	 	        0x30000000
+#define _PR_STACK_VMBASE	    0x50000000
+#define _MD_DEFAULT_STACK_SIZE	(2*65536L)
+#define _MD_MINIMUM_STACK_SIZE	(2*65536L)
+#define _MD_MMAP_FLAGS		    MAP_PRIVATE
+
+#define NEED_TIME_R
+#undef  HAVE_STACK_GROWING_UP
+#undef	HAVE_WEAK_IO_SYMBOLS
+#undef	HAVE_WEAK_MALLOC_SYMBOLS
+#define	HAVE_DLL
+#define	USE_DLFCN
+#define _PR_HAVE_SOCKADDR_LEN
+#define _PR_POLL_AVAILABLE
+#define _PR_USE_POLL
+#define _PR_STAT_HAS_ONLY_ST_ATIME
+#ifdef _PR_INET6
+#define _PR_HAVE_INET_NTOP
+#define _PR_HAVE_GETHOSTBYNAME2
+#ifdef _AIX51 /* AIX 4.3.3 does not have AI_NUMERICHOST. */
+#define _PR_HAVE_GETADDRINFO
+#endif
+#endif
+#define _PR_HAVE_SYSV_SEMAPHORES
+#define PR_HAVE_SYSV_NAMED_SHARED_MEMORY
+#define _PR_ACCEPT_INHERIT_NONBLOCK
+
+/* Timer operations */
+#if defined(AIX_TIMERS)
+#define _MD_INTERVAL_INIT()
+
+extern PRIntervalTime _MD_AixGetInterval(void);
+#define _MD_GET_INTERVAL _MD_AixGetInterval
+
+extern PRIntervalTime _MD_AixIntervalPerSec(void);
+#define _MD_INTERVAL_PER_SEC _MD_AixIntervalPerSec
+
+#else  /* defined(AIX_TIMERS) */
+#define _MD_INTERVAL_USE_GTOD
+#endif  /* defined(AIX_TIMERS) */
+
+#ifdef AIX_HAVE_ATOMIC_OP_H
+/* The atomic operations */
+#include <sys/atomic_op.h>
+#define _PR_HAVE_ATOMIC_OPS
+#ifndef IS_64
+#define _PR_HAVE_ATOMIC_CAS
+#endif
+#define _MD_INIT_ATOMIC()
+#define _MD_ATOMIC_INCREMENT(val)   ((PRInt32)fetch_and_add((atomic_p)val, 1) + 1)
+#define _MD_ATOMIC_ADD(ptr, val)   ((PRInt32)fetch_and_add((atomic_p)ptr, val) + val)
+#define _MD_ATOMIC_DECREMENT(val)   ((PRInt32)fetch_and_add((atomic_p)val, -1) - 1)
+#define _MD_ATOMIC_SET(val, newval) _AIX_AtomicSet(val, newval)
+#endif /* AIX_HAVE_ATOMIC_OP_H */
+
+#define USE_SETJMP
+
+#include <setjmp.h>
+
+#define _MD_GET_SP(_t)				(_t)->md.jb[3]
+#define _MD_SET_THR_SP(_t, _sp)		((_t)->md.jb[3] = (int) (_sp - 2 * 64))
+#define PR_NUM_GCREGS				_JBLEN
+
+#define CONTEXT(_th) 				((_th)->md.jb)
+#define SAVE_CONTEXT(_th)			_setjmp(CONTEXT(_th))
+#define GOTO_CONTEXT(_th)			_longjmp(CONTEXT(_th), 1)
+
+#ifdef PTHREADS_USER
+#include "_nspr_pthread.h"
+#else
+
+/*
+** Initialize the thread context preparing it to execute _main.
+*/
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)	      \
+    PR_BEGIN_MACRO				      \
+        *status = PR_TRUE;              \
+	if (setjmp(CONTEXT(_thread))) {	\
+	    (*_main)();			\
+	}				\
+	_MD_GET_SP(_thread) = (int) (_sp - 2 * 64);		\
+    PR_END_MACRO
+
+#define _MD_SWITCH_CONTEXT(_thread)  \
+    if (!setjmp(CONTEXT(_thread))) { \
+	(_thread)->md.errcode = errno;  \
+	_PR_Schedule();		     \
+    }
+
+/*
+** Restore a thread context, saved by _MD_SWITCH_CONTEXT
+*/
+#define _MD_RESTORE_CONTEXT(_thread) \
+{				     \
+    errno = (_thread)->md.errcode; \
+    _MD_SET_CURRENT_THREAD(_thread); \
+    longjmp(CONTEXT(_thread), 1); \
+}
+
+/* Machine-dependent (MD) data structures */
+
+struct _MDThread {
+    jmp_buf jb;
+    int id;
+    int errcode;
+};
+
+struct _MDThreadStack {
+    PRInt8 notused;
+};
+
+struct _MDLock {
+    PRInt8 notused;
+};
+
+struct _MDSemaphore {
+    PRInt8 notused;
+};
+
+struct _MDCVar {
+    PRInt8 notused;
+};
+
+struct _MDSegment {
+    PRInt8 notused;
+};
+
+/*
+ * md-specific cpu structure field
+ */
+#define _PR_MD_MAX_OSFD FD_SETSIZE
+
+struct _MDCPU_Unix {
+    PRCList ioQ;
+    PRUint32 ioq_timeout;
+    PRInt32 ioq_max_osfd;
+    PRInt32 ioq_osfd_cnt;
+#ifndef _PR_USE_POLL
+    fd_set fd_read_set, fd_write_set, fd_exception_set;
+    PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
+				fd_exception_cnt[_PR_MD_MAX_OSFD];
+#else
+	struct pollfd *ioq_pollfds;
+	int ioq_pollfds_size;
+#endif	/* _PR_USE_POLL */
+};
+
+#define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
+#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
+#define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
+#define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
+#define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
+#define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
+#define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
+#define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
+#define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
+#define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
+#define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
+#define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
+#define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)
+
+#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32
+
+struct _MDCPU {
+    struct _MDCPU_Unix md_unix;
+};
+
+#if !defined(_PR_PTHREADS)
+#define _MD_INIT_LOCKS()
+#endif
+
+#define _MD_NEW_LOCK(lock) PR_SUCCESS
+#define _MD_FREE_LOCK(lock)
+#define _MD_LOCK(lock)
+#define _MD_UNLOCK(lock)
+#define _MD_INIT_IO()
+#define _MD_IOQ_LOCK()
+#define _MD_IOQ_UNLOCK()
+
+#define _MD_EARLY_INIT          	_MD_EarlyInit
+#define _MD_FINAL_INIT			_PR_UnixInit
+#define _MD_INIT_RUNNING_CPU(cpu)	_MD_unix_init_running_cpu(cpu)
+#define _MD_INIT_THREAD			_MD_InitializeThread
+#define _MD_EXIT_THREAD(thread)
+#define	_MD_SUSPEND_THREAD(thread)
+#define	_MD_RESUME_THREAD(thread)
+#define _MD_CLEAN_THREAD(_thread)
+#endif /* PTHREADS_USER */
+
+#ifdef AIX_RENAME_SELECT
+#define _MD_SELECT	select
+#define _MD_POLL	poll
+#endif
+
+extern void _MD_aix_map_sendfile_error(int err);
+
+#endif /* nspr_aix_defs_h___ */
diff --git a/nsprpub/pr/include/md/_aix32.cfg b/nsprpub/pr/include/md/_aix32.cfg
new file mode 100644
index 0000000000..23a3f5125f
--- /dev/null
+++ b/nsprpub/pr/include/md/_aix32.cfg
@@ -0,0 +1,115 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_UNIX
+#define XP_UNIX
+#endif
+
+#ifndef AIX
+#define AIX
+#endif
+
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 1
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2	5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+
+#ifndef HAVE_LONG_LONG
+#define	HAVE_LONG_LONG
+#endif
+#undef	HAVE_ALIGNED_DOUBLES
+#undef	HAVE_ALIGNED_LONGLONGS
+
+#define PR_AF_INET6 24  /* same as AF_INET6 */
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE		PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT 	PR_BYTES_PER_SHORT
+#define BYTES_PER_INT 		PR_BYTES_PER_INT
+#define BYTES_PER_INT64		PR_BYTES_PER_INT64
+#define BYTES_PER_LONG		PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT		PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE	PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD		PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD		PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE		PR_BITS_PER_BYTE
+#define BITS_PER_SHORT		PR_BITS_PER_SHORT
+#define BITS_PER_INT		PR_BITS_PER_INT
+#define BITS_PER_INT64		PR_BITS_PER_INT64
+#define BITS_PER_LONG		PR_BITS_PER_LONG
+#define BITS_PER_FLOAT		PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE		PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD		PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2	PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2	PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2	PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2	PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2	PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2	PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2 	PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2	PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT		PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT		PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG		PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64		PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT		PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE		PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER	PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD		PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2	PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2	PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2	PR_WORDS_PER_DWORD_LOG2
+
+/* used by protypes.h only */
+#define _PR_AIX_HAVE_BSD_INT_TYPES
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_aix64.cfg b/nsprpub/pr/include/md/_aix64.cfg
new file mode 100644
index 0000000000..7efe896d1e
--- /dev/null
+++ b/nsprpub/pr/include/md/_aix64.cfg
@@ -0,0 +1,116 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_UNIX
+#define XP_UNIX
+#endif
+
+#ifndef AIX
+#define AIX
+#endif
+
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 1
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BYTES_PER_WORD_LOG2   3
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2	6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 8
+
+#ifndef HAVE_LONG_LONG
+#define	HAVE_LONG_LONG
+#endif
+#undef	HAVE_ALIGNED_DOUBLES
+#undef	HAVE_ALIGNED_LONGLONGS
+
+#define PR_AF_INET6 24  /* same as AF_INET6 */
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE		PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT 	PR_BYTES_PER_SHORT
+#define BYTES_PER_INT 		PR_BYTES_PER_INT
+#define BYTES_PER_INT64		PR_BYTES_PER_INT64
+#define BYTES_PER_LONG		PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT		PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE	PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD		PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD		PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE		PR_BITS_PER_BYTE
+#define BITS_PER_SHORT		PR_BITS_PER_SHORT
+#define BITS_PER_INT		PR_BITS_PER_INT
+#define BITS_PER_INT64		PR_BITS_PER_INT64
+#define BITS_PER_LONG		PR_BITS_PER_LONG
+#define BITS_PER_FLOAT		PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE		PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD		PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2	PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2	PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2	PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2	PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2	PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2	PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2 	PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2	PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT		PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT		PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG		PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64		PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT		PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE		PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER	PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD		PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2	PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2	PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2	PR_WORDS_PER_DWORD_LOG2
+
+/* used by protypes.h only */
+#define _PR_AIX_HAVE_BSD_INT_TYPES
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_beos.cfg b/nsprpub/pr/include/md/_beos.cfg
new file mode 100644
index 0000000000..5a3c569983
--- /dev/null
+++ b/nsprpub/pr/include/md/_beos.cfg
@@ -0,0 +1,120 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_BEOS
+#define XP_BEOS
+#undef XP_UNIX
+#endif
+
+#ifndef BEOS
+#define BEOS
+#endif
+
+#define PR_AF_INET6 5  /* same as AF_INET6 */
+
+#ifdef __powerpc__
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 1
+#else
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#endif
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+
+#ifndef HAVE_LONG_LONG
+#define	HAVE_LONG_LONG
+#endif
+/*
+ * XXX These two macros need to be investigated for different architectures.
+ */
+#define	HAVE_ALIGNED_DOUBLES
+#define	HAVE_ALIGNED_LONGLONGS
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE		PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT 	PR_BYTES_PER_SHORT
+#define BYTES_PER_INT 		PR_BYTES_PER_INT
+#define BYTES_PER_INT64		PR_BYTES_PER_INT64
+#define BYTES_PER_LONG		PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT		PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE	PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD		PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD		PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE		PR_BITS_PER_BYTE
+#define BITS_PER_SHORT		PR_BITS_PER_SHORT
+#define BITS_PER_INT		PR_BITS_PER_INT
+#define BITS_PER_INT64		PR_BITS_PER_INT64
+#define BITS_PER_LONG		PR_BITS_PER_LONG
+#define BITS_PER_FLOAT		PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE		PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD		PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2	PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2	PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2	PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2	PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2	PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2	PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2 	PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2	PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT		PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT		PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG		PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64		PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT		PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE		PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER	PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD		PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2	PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2	PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2	PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_beos.h b/nsprpub/pr/include/md/_beos.h
new file mode 100644
index 0000000000..78469dde4f
--- /dev/null
+++ b/nsprpub/pr/include/md/_beos.h
@@ -0,0 +1,583 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_beos_defs_h___
+#define nspr_beos_defs_h___
+
+#include "prtypes.h"
+#include "prio.h"
+#include "prthread.h"
+#include "prproces.h"
+#include "prmem.h"
+#include "obsolete/prsem.h"
+#include <errno.h>
+
+#include <support/SupportDefs.h>
+#include <kernel/OS.h>
+#include <dirent.h>
+
+/*
+ * Internal configuration macros
+ */
+
+#ifdef BONE_VERSION
+#define _PR_HAVE_SOCKADDR_LEN
+#define HAVE_NETINET_TCP_H
+#endif
+
+#define PR_LINKER_ARCH	"beos"
+#define _PR_SI_SYSNAME  "BEOS"
+#ifdef __powerpc__
+#define _PR_SI_ARCHITECTURE "ppc"
+#else
+#define _PR_SI_ARCHITECTURE "x86"
+#endif
+#define PR_DLL_SUFFIX		".so"
+
+#define _PR_VMBASE              0x30000000
+#define _PR_STACK_VMBASE	0x50000000
+#define _MD_DEFAULT_STACK_SIZE	65536L
+#define _MD_MMAP_FLAGS          MAP_PRIVATE
+
+#undef	HAVE_STACK_GROWING_UP
+#define HAVE_DLL
+#define _PR_NO_CLOCK_TIMER
+
+/*
+ * The Atomic operations
+ */
+
+#define _PR_HAVE_ATOMIC_OPS
+#define _MD_INIT_ATOMIC _MD_AtomicInit
+#define _MD_ATOMIC_INCREMENT _MD_AtomicIncrement
+#define _MD_ATOMIC_ADD _MD_AtomicAdd
+#define _MD_ATOMIC_DECREMENT _MD_AtomicDecrement
+#define _MD_ATOMIC_SET _MD_AtomicSet
+
+#define HAVE_CVAR_BUILT_ON_SEM
+#define _PR_GLOBAL_THREADS_ONLY
+#define _PR_BTHREADS
+#define _PR_NEED_FAKE_POLL
+#define _PR_HAVE_PEEK_BUFFER
+#define _PR_PEEK_BUFFER_MAX (16 * 1024)
+#define _PR_FD_NEED_EMULATE_MSG_PEEK(fd) 1
+#define _PR_CONNECT_DOES_NOT_BIND
+#define _PR_HAVE_O_APPEND
+
+/* Define threading functions and objects as native BeOS */
+struct _MDThread {
+    thread_id	tid;	/* BeOS thread handle */
+	sem_id		joinSem;	/* sems used to synchronzie joining */
+	PRBool	is_joining;	/* TRUE if someone is currently waiting to
+						   join this thread */
+};
+
+struct _MDThreadStack {
+    PRInt8	notused;
+};
+
+/*
+ * Lock and Semaphore related definitions
+ */
+
+struct _MDLock {
+    sem_id semaphoreID;
+    int32  benaphoreCount;
+};
+
+struct _MDCVar {
+    sem_id sem1;
+    sem_id sem2;
+    int16  count;
+};
+
+struct _MDSemaphore {
+    sem_id sid;
+};
+
+/*
+** CPU-related definitions
+*/
+struct _MDCPU {
+    int8		unused;
+};
+
+/*
+** Process-related definitions
+*/
+struct _MDProcess {
+    pid_t pid;
+};
+
+struct _MDSegment {
+    PRInt8 notused;
+};
+
+/*
+** File- and directory-related definitions
+*/
+
+#ifndef BONE_VERSION
+#define BE_SOCK_SHUTDOWN_READ	0x01
+#define BE_SOCK_SHUTDOWN_WRITE	0x02
+#endif
+
+struct _MDFileDesc {
+    PRInt32	osfd;
+    PRInt32	sock_state;
+    PRBool	accepted_socket;
+    PRNetAddr	peer_addr;
+#ifndef BONE_VERSION
+    PRBool	connectValueValid;
+    int		connectReturnValue;
+    int		connectReturnError;
+#endif
+};
+
+struct _MDDir {
+    DIR		*d;
+};
+
+#define PR_DIRECTORY_SEPARATOR		'/'
+#define PR_DIRECTORY_SEPARATOR_STR	"/"
+#define PR_PATH_SEPARATOR		':'
+#define PR_PATH_SEPARATOR_STR		":"
+
+#define GETTIMEOFDAY(tp)	gettimeofday((tp), NULL)
+
+/* --- Memory-mapped files stuff --- not implemented on BeOS */
+
+struct _MDFileMap {
+    PRInt8 unused;
+};
+
+/*
+ * Network related definitions.
+ */
+
+#ifndef BONE_VERSION
+#define IPPROTO_IP 0
+#define AF_UNIX 2
+#define TCP_NODELAY SO_NONBLOCK
+#define SO_LINGER -1
+#define SO_ERROR 4
+#endif
+
+#define _PR_INTERRUPT_CHECK_INTERVAL_SECS 5
+
+#ifndef BONE_VERSION
+/* these aren't actually used. if they are, we're screwed */
+struct  protoent {
+    char    *p_name;        /* official protocol name */
+    char    **p_aliases;    /* alias list */
+    int     p_proto;        /* protocol # */
+};
+
+struct protoent* getprotobyname(const char* name);
+struct protoent* getprotobynumber(int number);
+#endif
+
+/*
+ * malloc() related definitions.
+ */
+
+#undef _PR_OVERRIDE_MALLOC
+
+/* Miscellaneous */
+
+#define _MD_ERRNO()             (errno)
+
+#define _MD_CLEANUP_BEFORE_EXIT _MD_cleanup_before_exit
+#define _MD_EXIT _MD_exit
+
+#define _MD_GET_ENV getenv
+#define _MD_PUT_ENV putenv
+
+#define _MD_EARLY_INIT _MD_early_init
+#define _MD_FINAL_INIT _MD_final_init
+#define _MD_EARLY_CLEANUP()
+
+/* CPU Stuff */
+
+#define _MD_INIT_CPUS _MD_init_cpus
+#define _MD_WAKEUP_CPUS _MD_wakeup_cpus
+#define _MD_START_INTERRUPTS _MD_start_interrupts
+#define _MD_STOP_INTERRUPTS _MD_stop_interrupts
+#define _MD_DISABLE_CLOCK_INTERRUPTS _MD_disable_clock_interrupts
+#define _MD_BLOCK_CLOCK_INTERRUPTS _MD_block_clock_interrupts
+#define _MD_UNBLOCK_CLOCK_INTERRUPTS _MD_unblock_clock_interrupts
+#define _MD_CLOCK_INTERRUPT _MD_clock_interrupt
+#define _MD_INIT_STACK _MD_init_stack
+#define _MD_CLEAR_STACK _MD_clear_stack
+// #define _MD_GET_INTSOFF _MD_get_intsoff
+// #define _MD_SET_INTSOFF _MD_set_intsoff
+#define _MD_CURRENT_CPU _MD_current_cpu
+#define _MD_SET_CURRENT_CPU _MD_set_current_cpu
+#define _MD_INIT_RUNNING_CPU _MD_init_running_cpu
+#define _MD_PAUSE_CPU _MD_pause_cpu
+
+/* Thread stuff */
+
+#define _MD_CURRENT_THREAD() PR_GetCurrentThread()
+// #define _MD_GET_ATTACHED_THREAD _MD_get_attached_thread
+#define _MD_LAST_THREAD _MD_last_thread
+#define _MD_SET_CURRENT_THREAD _MD_set_current_THREAD
+#define _MD_SET_LAST_THREAD _MD_set_last_thread
+#define _MD_INIT_THREAD _MD_init_thread
+#define _MD_EXIT_THREAD _MD_exit_thread
+#define _MD_INIT_ATTACHED_THREAD _MD_init_attached_thread
+
+#define _MD_SUSPEND_THREAD _MD_suspend_thread
+#define _MD_RESUME_THREAD _MD_resume_thread
+#define _MD_SUSPEND_CPU _MD_suspend_cpu
+#define _MD_RESUME_CPU _MD_resume_cpu
+#define _MD_BEGIN_SUSPEND_ALL _MD_begin_suspend_all
+#define _MD_END_SUSPEND_ALL _MD_end_suspend_all
+#define _MD_BEGIN_RESUME_ALL _MD_begin_resume_all
+#define _MD_END_RESUME_ALL _MD_end_resume_all
+
+#define _MD_GET_SP _MD_get_sp
+
+#define _MD_CLEAN_THREAD _MD_clean_thread
+#define _MD_CREATE_PRIMORDIAL_USER_THREAD _MD_create_primordial_user_thread
+#define _MD_CREATE_USER_THREAD _MD_create_user_thread
+#define _MD_INIT_PRIMORDIAL_THREAD _MD_init_primordial_thread
+#define _MD_CREATE_THREAD _MD_create_thread
+#define _MD_YIELD _MD_yield
+#define _MD_SET_PRIORITY _MD_set_priority
+
+#define _MD_SUSPENDALL _MD_suspendall
+#define _MD_RESUMEALL _MD_resumeall
+
+#define _MD_SWITCH_CONTEXT _MD_switch_context
+#define _MD_RESTORE_CONTEXT _MD_restore_context
+
+#define _MD_WAIT _MD_wait
+#define _MD_WAKEUP_WAITER _MD_wakeup_waiter
+
+#define _MD_SETTHREADAFFINITYMASK _MD_setthreadaffinitymask
+#define _MD_GETTHREADAFFINITYMASK _MD_getthreadaffinitymask
+
+/* Thread Synchronization */
+
+#define _MD_INIT_LOCKS _MD_init_locks
+#define _MD_NEW_LOCK _MD_new_lock
+#define _MD_FREE_LOCK _MD_free_lock
+#define _MD_LOCK _MD_lock
+#define _MD_TEST_AND_LOCK _MD_test_and_lock
+#define _MD_UNLOCK _MD_unlock
+#define _MD_IOQ_LOCK _MD_ioq_lock
+#define _MD_IOQ_UNLOCK _MD_ioq_unlock
+#define _MD_NEW_SEM _MD_new_sem
+#define _MD_DESTROY_SEM _MD_destroy_sem
+#define _MD_TIMED_WAIT_SEM _MD_timed_wait_sem
+#define _MD_WAIT_SEM _MD_wait_sem
+#define _MD_POST_SEM _MD_post_sem
+// #define _MD_NEW_CV _MD_new_cv
+// #define _MD_FREE_CV _MD_free_cv
+// #define _MD_WAIT_CV _MD_wait_cv
+// #define _MD_NOTIFY_CV _MD_notify_cv
+// #define _MD_NOTIFYALL_CV _MD_notifyall_cv
+
+/* File I/O */
+
+/* don't need any I/O initializations */
+#define _MD_INIT_IO()
+#define _MD_INIT_FILEDESC(fd)
+
+#define _MD_OPEN_DIR _MD_open_dir
+#define _MD_READ_DIR _MD_read_dir
+#define _MD_CLOSE_DIR _MD_close_dir
+#define _MD_MAKE_NONBLOCK _MD_make_nonblock
+#define _MD_SET_FD_INHERITABLE _MD_set_fd_inheritable
+#define _MD_INIT_FD_INHERITABLE _MD_init_fd_inheritable
+#define _MD_QUERY_FD_INHERITABLE _MD_query_fd_inheritable
+#define _MD_OPEN _MD_open
+#define _MD_OPEN_FILE _MD_open
+#define _MD_CLOSE_FILE _MD_close_file
+#define _MD_READ _MD_read
+#define _MD_WRITE _MD_write
+#define _MD_WRITEV _MD_writev
+#define _MD_LSEEK _MD_lseek
+#define _MD_LSEEK64 _MD_lseek64
+#define _MD_FSYNC _MD_fsync
+#define _MD_DELETE _MD_delete
+#define _MD_GETFILEINFO _MD_getfileinfo
+#define _MD_GETFILEINFO64 _MD_getfileinfo64
+#define _MD_GETOPENFILEINFO _MD_getopenfileinfo
+#define _MD_GETOPENFILEINFO64 _MD_getopenfileinfo64
+#define _MD_RENAME _MD_rename
+#define _MD_ACCESS _MD_access
+#define _MD_STAT stat
+#define _MD_MKDIR _MD_mkdir
+#define _MD_MAKE_DIR _MD_mkdir
+#define _MD_RMDIR _MD_rmdir
+#define _MD_PR_POLL _MD_pr_poll
+
+/* Network I/O */
+
+#define _MD_CLOSE_SOCKET _MD_close_socket
+#define _MD_CONNECT _MD_connect
+#define _MD_ACCEPT _MD_accept
+#define _MD_BIND _MD_bind
+#define _MD_LISTEN _MD_listen
+#define _MD_SHUTDOWN _MD_shutdown
+#define _MD_RECV _MD_recv
+#define _MD_SEND _MD_send
+#define _MD_ACCEPT_READ _MD_accept_read
+#define _MD_GETSOCKNAME _MD_getsockname
+#define _MD_GETPEERNAME _MD_getpeername
+#define _MD_GETSOCKOPT _MD_getsockopt
+#define _MD_SETSOCKOPT _MD_setsockopt
+#define _MD_RECVFROM _MD_recvfrom
+#define _MD_SENDTO _MD_sendto
+#define _MD_SOCKETPAIR _MD_socketpair
+#define _MD_SOCKET _MD_socket
+#define _MD_SOCKETAVAILABLE _MD_socketavailable
+#define _MD_PIPEAVAILABLE _MD_socketavailable
+
+#define _MD_GET_SOCKET_ERROR()	(errno)
+#define _MD_GETHOSTNAME _MD_gethostname
+
+#define _MD_SELECT select
+
+/* Process management */
+
+#define _MD_CREATE_PROCESS _MD_create_process
+#define _MD_DETACH_PROCESS _MD_detach_process
+#define _MD_WAIT_PROCESS _MD_wait_process
+#define _MD_KILL_PROCESS _MD_kill_process
+
+/* Atomic data operations */
+
+// #define _MD_INIT_ATOMIC _MD_init_atomic
+// #define _MD_ATOMIC_INCREMENT _MD_atomic_increment
+// #define _MD_ATOMIC_DECREMENT _MD_atomic_decrement
+// #define _MD_ATOMIC_SET _MD_atomic_set
+
+/* memory management */
+
+#define _MD_INIT_SEGS _MD_init_segs
+#define _MD_ALLOC_SEGMENT _MD_alloc_segment
+#define _MD_FREE_SEGMENT _MD_free_segment
+
+/* Memory mapped file I/O */
+
+#define _MD_CREATE_FILE_MAP _MD_create_file_map
+#define _MD_GET_MEM_MAP_ALIGNMENT _MD_get_mem_map_alignment
+#define _MD_MEM_MAP _MD_mem_map
+#define _MD_MEM_UNMAP _MD_mem_unmap
+#define _MD_CLOSE_FILE_MAP _MD_close_file_map
+
+/* Time related */
+
+#define _MD_NOW _MD_now
+#define _MD_INTERVAL_INIT _MD_interval_init
+#define _MD_GET_INTERVAL _MD_get_interval
+#define _MD_INTERVAL_PER_SEC _MD_interval_per_sec
+
+/* File locking */
+
+#define _MD_LOCKFILE _MD_lockfile
+#define _MD_TLOCKFILE _MD_tlockfile
+#define _MD_UNLOCKFILE _MD_unlockfile
+
+/**
+ * Prototypes for machine dependent function implementations. (Too bad
+ * NSPR's MD system blows so much that we have to reiterate every stinking
+ * thing we implement here in our MD header file.)
+ */
+
+/* Miscellaneous */
+
+NSPR_API(void) _MD_cleanup_before_exit(void);
+NSPR_API(void) _MD_exit(PRIntn status);
+
+NSPR_API(char*) _MD_get_env(const char *name);
+NSPR_API(PRIntn) _MD_put_env(const char *name);
+
+NSPR_API(void) _MD_early_init(void);
+NSPR_API(void) _MD_final_init(void);
+
+/* CPU Stuff */
+
+NSPR_API(void) _MD_init_cpus();
+NSPR_API(void) _MD_wakeup_cpus();
+NSPR_API(void) _MD_start_interrupts(void);
+NSPR_API(void) _MD_stop_interrupts(void);
+NSPR_API(void) _MD_disable_clock_interrupts(void);
+NSPR_API(void) _MD_block_clock_interrupts(void);
+NSPR_API(void) _MD_unblock_clock_interrupts(void);
+NSPR_API(void) _MD_clock_interrupt(void);
+// NSPR_API(void) _MD_init_stack(PRThreadStack *ts, PRIntn redzone);
+// NSPR_API(void) _MD_clear_stack(PRThreadStack* ts);
+// NSPR_API(PRInt32) _MD_get_intsoff(void);
+// NSPR_API(void) _MD_set_intsoff(PRInt32 _val);
+// NSPR_API(_PRCPU*) _MD_current_cpu(void);
+// NSPR_API(void) _MD_set_current_cpu(_PRCPU *cpu);
+// NSPR_API(void) _MD_init_running_cpu(_PRCPU *cpu);
+NSPR_API(PRInt32) _MD_pause_cpu(PRIntervalTime timeout);
+
+/* Thread stuff */
+
+// NSPR_API(PRThread*) _MD_current_thread(void);
+NSPR_API(PRThread*) _MD_get_attached_thread(void);
+NSPR_API(PRThread*) _MD_last_thread(void);
+NSPR_API(void) _MD_set_current_thread(PRThread *thread);
+NSPR_API(void) _MD_set_last_thread(PRThread *thread);
+NSPR_API(PRStatus) _MD_init_thread(PRThread *thread);
+NSPR_API(void) _MD_exit_thread(PRThread *thread);
+NSPR_API(PRStatus) _MD_init_attached_thread(PRThread *thread);
+
+NSPR_API(void) _MD_suspend_thread(PRThread *thread);
+NSPR_API(void) _MD_resume_thread(PRThread *thread);
+// NSPR_API(void) _MD_suspend_cpu(_PRCPU  *cpu);
+// NSPR_API(void) _MD_resume_cpu(_PRCPU  *cpu);
+NSPR_API(void) _MD_begin_suspend_all(void);
+NSPR_API(void) _MD_end_suspend_all(void);
+NSPR_API(void) _MD_begin_resume_all(void);
+NSPR_API(void) _MD_end_resume_all(void);
+
+NSPR_API(void *) _MD_get_sp(PRThread *thread);
+
+NSPR_API(void) _MD_clean_thread(PRThread *thread);
+NSPR_API(void) _MD_create_primordial_user_thread(PRThread *);
+NSPR_API(PRThread*) _MD_create_user_thread(PRUint32 stacksize, void (*start)(void *), void *arg);
+NSPR_API(void) _MD_init_primordial_thread(PRThread *thread);
+NSPR_API(PRStatus) _MD_create_thread(PRThread *thread, void (*start)(void *), PRThreadPriority priority, PRThreadScope scope, PRThreadState state, PRUint32 stackSize);
+NSPR_API(void) _MD_yield(void);
+NSPR_API(void) _MD_set_priority(struct _MDThread *md, PRThreadPriority newPri);
+
+NSPR_API(void) _MD_suspendall(void);
+NSPR_API(void) _MD_resumeall(void);
+
+NSPR_API(void) _MD_init_context(PRThread *thread, char *top, void (*start) (void), PRBool *status);
+NSPR_API(void) _MD_switch_context(PRThread *thread);
+NSPR_API(void) _MD_restore_context(PRThread *thread);
+
+NSPR_API(PRStatus) _MD_wait(PRThread *, PRIntervalTime timeout);
+NSPR_API(PRStatus) _MD_wakeup_waiter(PRThread *);
+
+NSPR_API(PRInt32) _MD_setthreadaffinitymask(PRThread *thread, PRUint32 mask );
+NSPR_API(PRInt32) _MD_getthreadaffinitymask(PRThread *thread, PRUint32 *mask);
+
+/* Thread Synchronization */
+
+NSPR_API(void) _MD_init_locks(void);
+NSPR_API(PRStatus) _MD_new_lock(struct _MDLock *md);
+NSPR_API(void) _MD_free_lock(struct _MDLock *md);
+NSPR_API(void) _MD_lock(struct _MDLock *md);
+NSPR_API(PRIntn) _MD_test_and_lock(struct _MDLock *md);
+NSPR_API(void) _MD_unlock(struct _MDLock *md);
+NSPR_API(void) _MD_ioq_lock(void);
+NSPR_API(void) _MD_ioq_unlock(void);
+NSPR_API(void) _MD_new_sem(struct _MDSemaphore *md, PRUintn value);
+NSPR_API(void) _MD_destroy_sem(struct _MDSemaphore *md);
+NSPR_API(PRStatus) _MD_timed_wait_sem(struct _MDSemaphore *md, PRIntervalTime timeout);
+NSPR_API(PRStatus) _MD_wait_sem(struct _MDSemaphore *md);
+NSPR_API(void) _MD_post_sem(struct _MDSemaphore *md);
+// NSPR_API(PRInt32) _MD_new_cv(struct _MDCVar *md);
+// NSPR_API(void) _MD_free_cv(struct _MDCVar *md);
+// NSPR_API(void) _MD_wait_cv(struct _MDCVar *mdCVar, struct _MDLock *mdLock, PRIntervalTime timeout);
+// NSPR_API(void) _MD_notify_cv(struct _MDCVar *md, struct _MDLock *lock);
+// NSPR_API(void) _MD_notifyall_cv(struct _MDCVar *md, struct _MDLock *lock);
+
+/* File I/O */
+
+// NSPR_API(void) _MD_init_io(void);
+NSPR_API(PRStatus) _MD_open_dir(struct _MDDir *md,const char *name);
+NSPR_API(char *) _MD_read_dir(struct _MDDir *md, PRIntn flags);
+NSPR_API(PRInt32) _MD_close_dir(struct _MDDir *md);
+NSPR_API(void) _MD_make_nonblock(PRFileDesc *fd);
+NSPR_API(void) _MD_init_fd_inheritable(PRFileDesc *fd, PRBool imported);
+NSPR_API(void) _MD_query_fd_inheritable(PRFileDesc *fd);
+NSPR_API(PRInt32) _MD_open(const char *name, PRIntn osflags, PRIntn mode);
+NSPR_API(PRInt32) _MD_close_file(PRInt32 osfd);
+NSPR_API(PRInt32) _MD_read(PRFileDesc *fd, void *buf, PRInt32 amount);
+NSPR_API(PRInt32) _MD_write(PRFileDesc *fd, const void *buf, PRInt32 amount);
+NSPR_API(PRInt32) _MD_writev(PRFileDesc *fd, const PRIOVec *iov, PRInt32 iov_size, PRIntervalTime timeout);
+NSPR_API(PRInt32) _MD_lseek(PRFileDesc *fd, PRInt32 offset, int whence);
+NSPR_API(PRInt64) _MD_lseek64(PRFileDesc *fd, PRInt64 offset, int whence);
+NSPR_API(PRInt32) _MD_fsync(PRFileDesc *fd);
+NSPR_API(PRInt32) _MD_delete(const char *name);
+NSPR_API(PRInt32) _MD_getfileinfo(const char *fn, PRFileInfo *info);
+NSPR_API(PRInt32) _MD_getfileinfo64(const char *fn, PRFileInfo64 *info);
+NSPR_API(PRInt32) _MD_getopenfileinfo(const PRFileDesc *fd, PRFileInfo *info);
+NSPR_API(PRInt32) _MD_getopenfileinfo64(const PRFileDesc *fd, PRFileInfo64 *info);
+NSPR_API(PRInt32) _MD_rename(const char *from, const char *to);
+NSPR_API(PRInt32) _MD_access(const char *name, PRIntn how);
+NSPR_API(PRInt32) _MD_stat(const char *name, struct stat *buf);
+NSPR_API(PRInt32) _MD_mkdir(const char *name, PRIntn mode);
+NSPR_API(PRInt32) _MD_rmdir(const char *name);
+NSPR_API(PRInt32) _MD_pr_poll(PRPollDesc *pds, PRIntn npds, PRIntervalTime timeout);
+
+/* Network I/O */
+NSPR_API(PRInt32) _MD_close_socket(PRInt32 osfd);
+NSPR_API(PRInt32) _MD_connect(PRFileDesc *fd, const PRNetAddr *addr, PRUint32 addrlen, PRIntervalTime timeout);
+NSPR_API(PRInt32) _MD_accept(PRFileDesc *fd, PRNetAddr *addr, PRUint32 *addrlen, PRIntervalTime timeout);
+NSPR_API(PRInt32) _MD_bind(PRFileDesc *fd, const PRNetAddr *addr, PRUint32 addrlen);
+NSPR_API(PRInt32) _MD_listen(PRFileDesc *fd, PRIntn backlog);
+NSPR_API(PRInt32) _MD_shutdown(PRFileDesc *fd, PRIntn how);
+NSPR_API(PRInt32) _MD_recv(PRFileDesc *fd, void *buf, PRInt32 amount, PRIntn flags, PRIntervalTime timeout);
+NSPR_API(PRInt32) _MD_send(PRFileDesc *fd, const void *buf, PRInt32 amount, PRIntn flags, PRIntervalTime timeout);
+NSPR_API(PRInt32) _MD_accept_read(PRFileDesc *sd, PRInt32 *newSock, PRNetAddr **raddr, void *buf, PRInt32 amount, PRIntervalTime timeout);
+// NSPR_API(PRInt32) _MD_fast_accept(PRFileDesc *fd, PRNetAddr *addr, PRUint32 *addrlen, PRIntervalTime timeout, PRBool fast, _PR_AcceptTimeoutCallback callback, void *callbackArg);
+// NSPR_API(PRInt32) _MD_fast_accept_read(PRFileDesc *sd, PRInt32 *newSock, PRNetAddr **raddr, void *buf, PRInt32 amount, PRIntervalTime timeout, PRBool fast, _PR_AcceptTimeoutCallback callback, void *callbackArg);
+// NSPR_API(void) _MD_update_accept_context(PRInt32 s, PRInt32 ls);
+NSPR_API(PRStatus) _MD_getsockname(PRFileDesc *fd, PRNetAddr *addr, PRUint32 *addrlen);
+NSPR_API(PRStatus) _MD_getpeername(PRFileDesc *fd, PRNetAddr *addr, PRUint32 *addrlen);
+NSPR_API(PRStatus) _MD_getsockopt(PRFileDesc *fd, PRInt32 level, PRInt32 optname, char* optval, PRInt32* optlen);
+NSPR_API(PRStatus) _MD_setsockopt(PRFileDesc *fd, PRInt32 level, PRInt32 optname, const char* optval, PRInt32 optlen);
+NSPR_API(PRInt32) _MD_recvfrom(PRFileDesc *fd, void *buf, PRInt32 amount, PRIntn flags, PRNetAddr *addr, PRUint32 *addrlen, PRIntervalTime timeout);
+NSPR_API(PRInt32) _MD_sendto(PRFileDesc *fd, const void *buf, PRInt32 amount, PRIntn flags, const PRNetAddr *addr, PRUint32 addrlen, PRIntervalTime timeout);
+NSPR_API(PRInt32) _MD_socketpair(int af, int type, int flags, PRInt32 *osfd);
+NSPR_API(PRInt32) _MD_socket(int af, int type, int flags);
+NSPR_API(PRInt32) _MD_socketavailable(PRFileDesc *fd);
+
+// NSPR_API(PRInt32) _MD_get_socket_error(void);
+NSPR_API(PRStatus) _MD_gethostname(char *name, PRUint32 namelen);
+
+/* Process management */
+
+NSPR_API(PRProcess *) _MD_create_process(const char *path, char *const *argv, char *const *envp, const PRProcessAttr *attr);
+NSPR_API(PRStatus) _MD_detach_process(PRProcess *process);
+NSPR_API(PRStatus) _MD_wait_process(PRProcess *process, PRInt32 *exitCode);
+NSPR_API(PRStatus) _MD_kill_process(PRProcess *process);
+
+/* Atomic data operations */
+
+// NSPR_API(void) _MD_init_atomic(void);
+// NSPR_API(PRInt32) _MD_atomic_increment(PRInt32 *);
+// NSPR_API(PRInt32) _MD_atomic_decrement(PRInt32 *);
+// NSPR_API(PRInt32) _MD_atomic_set(PRInt32 *, PRInt32);
+
+/* Memory management */
+
+NSPR_API(void) _MD_init_segs(void);
+NSPR_API(PRStatus) _MD_alloc_segment(PRSegment *seg, PRUint32 size, void *vaddr);
+NSPR_API(void) _MD_free_segment(PRSegment *seg);
+
+/* Memory mapped file I/O */
+
+NSPR_API(PRStatus) _MD_create_file_map(PRFileMap *fmap, PRInt64 size);
+NSPR_API(PRInt32) _MD_get_mem_map_alignment(void);
+NSPR_API(void *) _MD_mem_map(PRFileMap *fmap, PRInt64 offset, PRUint32 len);
+NSPR_API(PRStatus) _MD_mem_unmap(void *addr, PRUint32 size);
+NSPR_API(PRStatus) _MD_close_file_map(PRFileMap *fmap);
+
+/* Time related */
+
+NSPR_API(PRTime) _MD_now(void);
+NSPR_API(void) _MD_interval_init(void);
+NSPR_API(PRIntervalTime) _MD_get_interval(void);
+NSPR_API(PRIntervalTime) _MD_interval_per_sec(void);
+
+/* File locking */
+
+NSPR_API(PRStatus) _MD_lockfile(PRInt32 osfd);
+NSPR_API(PRStatus) _MD_tlockfile(PRInt32 osfd);
+NSPR_API(PRStatus) _MD_unlockfile(PRInt32 osfd);
+
+#endif /* _nspr_beos_defs_h___*/
diff --git a/nsprpub/pr/include/md/_bsdi.cfg b/nsprpub/pr/include/md/_bsdi.cfg
new file mode 100644
index 0000000000..130cf820b0
--- /dev/null
+++ b/nsprpub/pr/include/md/_bsdi.cfg
@@ -0,0 +1,170 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_UNIX
+#define XP_UNIX
+#endif
+
+#ifndef BSDI
+#define BSDI
+#endif
+
+#define PR_AF_INET6 24  /* same as AF_INET6 */
+
+#if defined(__i386__)
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#ifndef HAVE_LONG_LONG
+#define HAVE_LONG_LONG
+#endif
+#undef	HAVE_ALIGNED_DOUBLES
+#undef	HAVE_ALIGNED_LONGLONGS
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#elif defined(__sparc__)
+
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 1
+#ifndef HAVE_LONG_LONG
+#define HAVE_LONG_LONG
+#endif
+#define	HAVE_ALIGNED_DOUBLES
+#define	HAVE_ALIGNED_LONGLONGS
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#else
+
+#error "Unknown CPU architecture"
+
+#endif
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE		PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT 	PR_BYTES_PER_SHORT
+#define BYTES_PER_INT 		PR_BYTES_PER_INT
+#define BYTES_PER_INT64		PR_BYTES_PER_INT64
+#define BYTES_PER_LONG		PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT		PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE	PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD		PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD		PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE		PR_BITS_PER_BYTE
+#define BITS_PER_SHORT		PR_BITS_PER_SHORT
+#define BITS_PER_INT		PR_BITS_PER_INT
+#define BITS_PER_INT64		PR_BITS_PER_INT64
+#define BITS_PER_LONG		PR_BITS_PER_LONG
+#define BITS_PER_FLOAT		PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE		PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD		PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2	PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2	PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2	PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2	PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2	PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2	PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2 	PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2	PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT		PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT		PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG		PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64		PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT		PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE		PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER	PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD		PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2	PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2	PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2	PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_bsdi.h b/nsprpub/pr/include/md/_bsdi.h
new file mode 100644
index 0000000000..dbd0ec3931
--- /dev/null
+++ b/nsprpub/pr/include/md/_bsdi.h
@@ -0,0 +1,181 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_bsdi_defs_h___
+#define nspr_bsdi_defs_h___
+
+/*
+ * Internal configuration macros
+ */
+
+#include <sys/param.h>	/* for _BSDI_VERSION */
+
+#define PR_LINKER_ARCH	"bsdi"
+#define _PR_SI_SYSNAME "BSDI"
+#if defined(__i386__)
+#define _PR_SI_ARCHITECTURE "x86"
+#elif defined(__sparc__)
+#define _PR_SI_ARCHITECTURE "sparc"
+#else
+#error "Unknown CPU architecture"
+#endif
+#define PR_DLL_SUFFIX		".so"
+
+#define _PR_STACK_VMBASE	0x50000000
+#define _MD_DEFAULT_STACK_SIZE	65536L
+#define _MD_MMAP_FLAGS          MAP_PRIVATE
+
+#define HAVE_BSD_FLOCK
+#define NEED_TIME_R
+#define _PR_HAVE_SOCKADDR_LEN
+#define _PR_NO_LARGE_FILES
+
+#define USE_SETJMP
+
+/* BSD/OS 4.3 and newer all have IPv6 support */
+#if _BSDI_VERSION >= 200105
+#define _PR_INET6
+#define _PR_HAVE_INET_NTOP
+#define _PR_HAVE_GETIPNODEBYNAME
+#define _PR_HAVE_GETIPNODEBYADDR
+#define _PR_HAVE_GETADDRINFO
+#define _PR_INET6_PROBE
+#endif
+
+#ifndef _PR_PTHREADS
+
+#include <setjmp.h>
+
+#if defined(_PR_BSDI_JMPBUF_IS_ARRAY)
+#define _MD_GET_SP(_t)    (_t)->md.context[2] 
+#elif defined(_PR_BSDI_JMPBUF_IS_STRUCT)
+#define _MD_GET_SP(_t)    (_t)->md.context[0].jb_esp
+#else
+#error "Unknown BSDI jmp_buf type"
+#endif
+
+#define PR_NUM_GCREGS	_JBLEN
+#define PR_CONTEXT_TYPE	jmp_buf
+
+#define CONTEXT(_th) ((_th)->md.context)
+
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)	  \
+{								  \
+    *status = PR_TRUE; \
+    if (setjmp(CONTEXT(_thread))) {				  \
+	_main();					  \
+    }								  \
+    _MD_GET_SP(_thread) = (int) (_sp - 64); \
+}
+
+#define _MD_SWITCH_CONTEXT(_thread)  \
+    if (!setjmp(CONTEXT(_thread))) { \
+	(_thread)->md.errcode = errno;  \
+	_PR_Schedule();		     \
+    }
+
+/*
+** Restore a thread context, saved by _MD_SWITCH_CONTEXT
+*/
+#define _MD_RESTORE_CONTEXT(_thread) \
+{				     \
+    errno = (_thread)->md.errcode;	     \
+    _MD_SET_CURRENT_THREAD(_thread); \
+    longjmp(CONTEXT(_thread), 1);    \
+}
+
+/* Machine-dependent (MD) data structures */
+
+struct _MDThread {
+    PR_CONTEXT_TYPE context;
+    int id;
+    int errcode;
+};
+
+struct _MDThreadStack {
+    PRInt8 notused;
+};
+
+struct _MDLock {
+    PRInt8 notused;
+};
+
+struct _MDSemaphore {
+    PRInt8 notused;
+};
+
+struct _MDCVar {
+    PRInt8 notused;
+};
+
+struct _MDSegment {
+    PRInt8 notused;
+};
+
+/*
+ * md-specific cpu structure field
+ */
+#define _PR_MD_MAX_OSFD FD_SETSIZE
+
+struct _MDCPU_Unix {
+    PRCList ioQ;
+    PRUint32 ioq_timeout;
+    PRInt32 ioq_max_osfd;
+    PRInt32 ioq_osfd_cnt;
+#ifndef _PR_USE_POLL
+    fd_set fd_read_set, fd_write_set, fd_exception_set;
+    PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
+				fd_exception_cnt[_PR_MD_MAX_OSFD];
+#else
+	struct pollfd *ioq_pollfds;
+	int ioq_pollfds_size;
+#endif	/* _PR_USE_POLL */
+};
+
+#define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
+#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
+#define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
+#define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
+#define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
+#define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
+#define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
+#define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
+#define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
+#define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
+#define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
+#define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
+#define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)
+
+#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32
+
+struct _MDCPU {
+	struct _MDCPU_Unix md_unix;
+};
+
+#define _MD_INIT_LOCKS()
+#define _MD_NEW_LOCK(lock) PR_SUCCESS
+#define _MD_FREE_LOCK(lock)
+#define _MD_LOCK(lock)
+#define _MD_UNLOCK(lock)
+#define _MD_INIT_IO()
+#define _MD_IOQ_LOCK()
+#define _MD_IOQ_UNLOCK()
+
+#define _MD_INIT_RUNNING_CPU(cpu) _MD_unix_init_running_cpu(cpu)
+#define _MD_INIT_THREAD         _MD_InitializeThread
+#define _MD_EXIT_THREAD(thread)
+#define _MD_CLEAN_THREAD(_thread)
+
+#endif /* ! _PR_PTHREADS */
+
+#define _MD_EARLY_INIT          _MD_EarlyInit
+#define _MD_FINAL_INIT			_PR_UnixInit
+
+#include <sys/syscall.h>
+#define _MD_SELECT(nfds,r,w,e,tv) syscall(SYS_select,nfds,r,w,e,tv)
+
+#define _MD_INTERVAL_USE_GTOD
+
+#endif /* nspr_bsdi_defs_h___ */
diff --git a/nsprpub/pr/include/md/_darwin.cfg b/nsprpub/pr/include/md/_darwin.cfg
new file mode 100644
index 0000000000..5e11893315
--- /dev/null
+++ b/nsprpub/pr/include/md/_darwin.cfg
@@ -0,0 +1,165 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_UNIX
+#define XP_UNIX
+#endif
+
+#define PR_AF_INET6 30  /* same as AF_INET6 */
+
+#ifdef __LITTLE_ENDIAN__
+#undef IS_BIG_ENDIAN
+#define  IS_LITTLE_ENDIAN 1
+#else
+#undef IS_LITTLE_ENDIAN
+#define  IS_BIG_ENDIAN 1
+#endif
+
+#ifdef __LP64__
+#define IS_64
+#endif
+
+#ifndef HAVE_LONG_LONG
+#define	HAVE_LONG_LONG
+#endif
+#undef	HAVE_ALIGNED_DOUBLES
+#define	HAVE_ALIGNED_LONGLONGS 1
+
+#ifdef IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+#define PR_BITS_PER_DWORD   64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+#define PR_BITS_PER_DWORD_LOG2  6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+#define PR_ALIGN_OF_WORD    8
+#define PR_ALIGN_OF_DWORD   8
+
+#else /* IS_64 */
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+#define PR_BITS_PER_DWORD   64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#endif /* IS_64 */
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE		PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT 	PR_BYTES_PER_SHORT
+#define BYTES_PER_INT 		PR_BYTES_PER_INT
+#define BYTES_PER_INT64		PR_BYTES_PER_INT64
+#define BYTES_PER_LONG		PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT		PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE	PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD		PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD		PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE		PR_BITS_PER_BYTE
+#define BITS_PER_SHORT		PR_BITS_PER_SHORT
+#define BITS_PER_INT		PR_BITS_PER_INT
+#define BITS_PER_INT64		PR_BITS_PER_INT64
+#define BITS_PER_LONG		PR_BITS_PER_LONG
+#define BITS_PER_FLOAT		PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE		PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD		PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2	PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2	PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2	PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2	PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2	PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2	PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2 	PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2	PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT		PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT		PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG		PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64		PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT		PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE		PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER	PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD		PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2	PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2	PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2	PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
+
diff --git a/nsprpub/pr/include/md/_darwin.h b/nsprpub/pr/include/md/_darwin.h
new file mode 100644
index 0000000000..d321023230
--- /dev/null
+++ b/nsprpub/pr/include/md/_darwin.h
@@ -0,0 +1,303 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_darwin_defs_h___
+#define nspr_darwin_defs_h___
+
+#include "prthread.h"
+
+#include <libkern/OSAtomic.h>
+#include <sys/syscall.h>
+
+#ifdef __APPLE__
+#include <AvailabilityMacros.h>
+#include <TargetConditionals.h>
+#endif
+
+#define PR_LINKER_ARCH	"darwin"
+#define _PR_SI_SYSNAME  "DARWIN"
+#ifdef __i386__
+#define _PR_SI_ARCHITECTURE "x86"
+#elif defined(__x86_64__)
+#define _PR_SI_ARCHITECTURE "x86-64"
+#elif defined(__ppc__)
+#define _PR_SI_ARCHITECTURE "ppc"
+#elif defined(__arm__)
+#define _PR_SI_ARCHITECTURE "arm"
+#elif defined(__aarch64__)
+#define _PR_SI_ARCHITECTURE "aarch64"
+#else
+#error "Unknown CPU architecture"
+#endif
+#define PR_DLL_SUFFIX		".dylib"
+
+#define _PR_VMBASE              0x30000000
+#define _PR_STACK_VMBASE	0x50000000
+#define _MD_DEFAULT_STACK_SIZE	65536L
+#define _MD_MMAP_FLAGS          MAP_PRIVATE
+
+#undef  HAVE_STACK_GROWING_UP
+#define HAVE_DLL
+#if defined(__x86_64__) || TARGET_OS_IPHONE
+#define USE_DLFCN
+#else
+#define USE_MACH_DYLD
+#endif
+#define _PR_HAVE_SOCKADDR_LEN  
+#define _PR_STAT_HAS_ST_ATIMESPEC
+#define _PR_HAVE_LARGE_OFF_T
+#define _PR_HAVE_SYSV_SEMAPHORES
+#define PR_HAVE_SYSV_NAMED_SHARED_MEMORY
+
+#define _PR_INET6
+/*
+ * I'd prefer to use getipnodebyname and getipnodebyaddr but the
+ * getipnodebyname(3) man page on Mac OS X 10.2 says they are not
+ * thread-safe.  AI_V4MAPPED|AI_ADDRCONFIG doesn't work either.
+ */
+#define _PR_HAVE_GETHOSTBYNAME2
+#define _PR_HAVE_GETADDRINFO
+/*
+ * On Mac OS X 10.2, gethostbyaddr fails with h_errno=NO_RECOVERY
+ * if you pass an IPv4-mapped IPv6 address to it.
+ */
+#define _PR_GHBA_DISALLOW_V4MAPPED
+#ifdef __APPLE__
+#if !defined(MAC_OS_X_VERSION_10_3) || \
+    MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_3
+/*
+ * socket(AF_INET6) fails with EPROTONOSUPPORT on Mac OS X 10.1.
+ * IPv6 under OS X 10.2 and below is not complete (see bug 222031).
+ */
+#define _PR_INET6_PROBE
+#endif /* DT < 10.3 */
+#if defined(MAC_OS_X_VERSION_10_2) && \
+    MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_2
+/* Mac OS X 10.2 has inet_ntop and inet_pton. */
+#define _PR_HAVE_INET_NTOP
+#endif /* DT >= 10.2 */
+#endif /* __APPLE__ */
+#define _PR_IPV6_V6ONLY_PROBE
+/* The IPV6_V6ONLY socket option is not defined on Mac OS X 10.1. */
+#ifndef IPV6_V6ONLY
+#define IPV6_V6ONLY 27
+#endif
+
+#ifdef __ppc__
+#define _PR_HAVE_ATOMIC_OPS
+#define _MD_INIT_ATOMIC()
+extern PRInt32 _PR_DarwinPPC_AtomicIncrement(PRInt32 *val);
+#define _MD_ATOMIC_INCREMENT(val)   _PR_DarwinPPC_AtomicIncrement(val)
+extern PRInt32 _PR_DarwinPPC_AtomicDecrement(PRInt32 *val);
+#define _MD_ATOMIC_DECREMENT(val)   _PR_DarwinPPC_AtomicDecrement(val)
+extern PRInt32 _PR_DarwinPPC_AtomicSet(PRInt32 *val, PRInt32 newval);
+#define _MD_ATOMIC_SET(val, newval) _PR_DarwinPPC_AtomicSet(val, newval)
+extern PRInt32 _PR_DarwinPPC_AtomicAdd(PRInt32 *ptr, PRInt32 val);
+#define _MD_ATOMIC_ADD(ptr, val)    _PR_DarwinPPC_AtomicAdd(ptr, val)
+#endif /* __ppc__ */
+
+#ifdef __i386__
+#define _PR_HAVE_ATOMIC_OPS
+#define _MD_INIT_ATOMIC()
+extern PRInt32 _PR_Darwin_x86_AtomicIncrement(PRInt32 *val);
+#define _MD_ATOMIC_INCREMENT(val)   _PR_Darwin_x86_AtomicIncrement(val)
+extern PRInt32 _PR_Darwin_x86_AtomicDecrement(PRInt32 *val);
+#define _MD_ATOMIC_DECREMENT(val)   _PR_Darwin_x86_AtomicDecrement(val)
+extern PRInt32 _PR_Darwin_x86_AtomicSet(PRInt32 *val, PRInt32 newval);
+#define _MD_ATOMIC_SET(val, newval) _PR_Darwin_x86_AtomicSet(val, newval)
+extern PRInt32 _PR_Darwin_x86_AtomicAdd(PRInt32 *ptr, PRInt32 val);
+#define _MD_ATOMIC_ADD(ptr, val)    _PR_Darwin_x86_AtomicAdd(ptr, val)
+#endif /* __i386__ */
+
+#ifdef __x86_64__
+#define _PR_HAVE_ATOMIC_OPS
+#define _MD_INIT_ATOMIC()
+extern PRInt32 _PR_Darwin_x86_64_AtomicIncrement(PRInt32 *val);
+#define _MD_ATOMIC_INCREMENT(val)   _PR_Darwin_x86_64_AtomicIncrement(val)
+extern PRInt32 _PR_Darwin_x86_64_AtomicDecrement(PRInt32 *val);
+#define _MD_ATOMIC_DECREMENT(val)   _PR_Darwin_x86_64_AtomicDecrement(val)
+extern PRInt32 _PR_Darwin_x86_64_AtomicSet(PRInt32 *val, PRInt32 newval);
+#define _MD_ATOMIC_SET(val, newval) _PR_Darwin_x86_64_AtomicSet(val, newval)
+extern PRInt32 _PR_Darwin_x86_64_AtomicAdd(PRInt32 *ptr, PRInt32 val);
+#define _MD_ATOMIC_ADD(ptr, val)    _PR_Darwin_x86_64_AtomicAdd(ptr, val)
+#endif /* __x86_64__ */
+
+#if defined(__arm__) || defined(__aarch64__)
+#define _PR_HAVE_ATOMIC_OPS
+#define _MD_INIT_ATOMIC()
+#define _MD_ATOMIC_INCREMENT(val)   OSAtomicIncrement32(val)
+#define _MD_ATOMIC_DECREMENT(val)   OSAtomicDecrement32(val)
+static inline PRInt32 _MD_ATOMIC_SET(PRInt32 *val, PRInt32 newval)
+{
+    PRInt32 oldval;
+    do {
+        oldval = *val;
+    } while (!OSAtomicCompareAndSwap32(oldval, newval, val));
+    return oldval;
+}
+#define _MD_ATOMIC_ADD(ptr, val)    OSAtomicAdd32(val, ptr)
+#endif /* __arm__ || __aarch64__ */
+
+#define USE_SETJMP
+
+#if !defined(_PR_PTHREADS)
+
+#include <setjmp.h>
+
+#define PR_CONTEXT_TYPE	jmp_buf
+
+#define CONTEXT(_th)       ((_th)->md.context)
+#define _MD_GET_SP(_th)    (((struct sigcontext *) (_th)->md.context)->sc_onstack)
+#define PR_NUM_GCREGS	    _JBLEN
+
+/*
+** Initialize a thread context to run "_main()" when started
+*/
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)  \
+{  \
+    *status = PR_TRUE;  \
+    if (setjmp(CONTEXT(_thread))) {  \
+        _main();  \
+    }  \
+    _MD_GET_SP(_thread) = (unsigned char*) ((_sp) - 64); \
+}
+
+#define _MD_SWITCH_CONTEXT(_thread)  \
+    if (!setjmp(CONTEXT(_thread))) {  \
+	(_thread)->md.errcode = errno;  \
+	_PR_Schedule();  \
+    }
+
+/*
+** Restore a thread context, saved by _MD_SWITCH_CONTEXT
+*/
+#define _MD_RESTORE_CONTEXT(_thread) \
+{   \
+    errno = (_thread)->md.errcode;  \
+    _MD_SET_CURRENT_THREAD(_thread);  \
+    longjmp(CONTEXT(_thread), 1);  \
+}
+
+/* Machine-dependent (MD) data structures */
+
+struct _MDThread {
+    PR_CONTEXT_TYPE context;
+    int id;
+    int errcode;
+};
+
+struct _MDThreadStack {
+    PRInt8 notused;
+};
+
+struct _MDLock {
+    PRInt8 notused;
+};
+
+struct _MDSemaphore {
+    PRInt8 notused;
+};
+
+struct _MDCVar {
+    PRInt8 notused;
+};
+
+struct _MDSegment {
+    PRInt8 notused;
+};
+
+/*
+ * md-specific cpu structure field
+ */
+#define _PR_MD_MAX_OSFD FD_SETSIZE
+
+struct _MDCPU_Unix {
+    PRCList ioQ;
+    PRUint32 ioq_timeout;
+    PRInt32 ioq_max_osfd;
+    PRInt32 ioq_osfd_cnt;
+#ifndef _PR_USE_POLL
+    fd_set fd_read_set, fd_write_set, fd_exception_set;
+    PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
+				fd_exception_cnt[_PR_MD_MAX_OSFD];
+#else
+	struct pollfd *ioq_pollfds;
+	int ioq_pollfds_size;
+#endif	/* _PR_USE_POLL */
+};
+
+#define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
+#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
+#define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
+#define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
+#define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
+#define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
+#define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
+#define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
+#define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
+#define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
+#define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
+#define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
+#define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)
+
+#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32
+
+struct _MDCPU {
+	struct _MDCPU_Unix md_unix;
+};
+
+#define _MD_INIT_LOCKS()
+#define _MD_NEW_LOCK(lock) PR_SUCCESS
+#define _MD_FREE_LOCK(lock)
+#define _MD_LOCK(lock)
+#define _MD_UNLOCK(lock)
+#define _MD_INIT_IO()
+#define _MD_IOQ_LOCK()
+#define _MD_IOQ_UNLOCK()
+
+extern PRStatus _MD_InitializeThread(PRThread *thread);
+
+#define _MD_INIT_RUNNING_CPU(cpu)       _MD_unix_init_running_cpu(cpu)
+#define _MD_INIT_THREAD                 _MD_InitializeThread
+#define _MD_EXIT_THREAD(thread)
+#define _MD_SUSPEND_THREAD(thread)      _MD_suspend_thread
+#define _MD_RESUME_THREAD(thread)       _MD_resume_thread
+#define _MD_CLEAN_THREAD(_thread)
+
+extern PRStatus _MD_CREATE_THREAD(
+    PRThread *thread,
+    void (*start) (void *),
+    PRThreadPriority priority,
+    PRThreadScope scope,
+    PRThreadState state,
+    PRUint32 stackSize);
+extern void _MD_SET_PRIORITY(struct _MDThread *thread, PRUintn newPri);
+extern PRStatus _MD_WAIT(PRThread *, PRIntervalTime timeout);
+extern PRStatus _MD_WAKEUP_WAITER(PRThread *);
+extern void _MD_YIELD(void);
+
+#endif /* ! _PR_PTHREADS */
+
+#define _MD_EARLY_INIT          _MD_EarlyInit
+#define _MD_FINAL_INIT			_PR_UnixInit
+#define _MD_INTERVAL_INIT       _PR_Mach_IntervalInit
+#define _MD_GET_INTERVAL        _PR_Mach_GetInterval
+#define _MD_INTERVAL_PER_SEC    _PR_Mach_TicksPerSecond
+
+extern void             _MD_EarlyInit(void);
+extern void             _PR_Mach_IntervalInit(void);
+extern PRIntervalTime   _PR_Mach_GetInterval(void);
+extern PRIntervalTime   _PR_Mach_TicksPerSecond(void);
+
+/*
+ * We wrapped the select() call.  _MD_SELECT refers to the built-in,
+ * unwrapped version.
+ */
+#define _MD_SELECT(nfds,r,w,e,tv) syscall(SYS_select,nfds,r,w,e,tv)
+
+/* For writev() */
+#include <sys/uio.h>
+
+#endif /* nspr_darwin_defs_h___ */
diff --git a/nsprpub/pr/include/md/_dgux.cfg b/nsprpub/pr/include/md/_dgux.cfg
new file mode 100644
index 0000000000..8c9e3de0fe
--- /dev/null
+++ b/nsprpub/pr/include/md/_dgux.cfg
@@ -0,0 +1,108 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_UNIX
+#define XP_UNIX
+#endif
+
+#ifndef DGUX
+#define DGUX
+#endif
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#ifndef HAVE_LONG_LONG
+#define HAVE_LONG_LONG
+#endif
+#undef	HAVE_ALIGNED_DOUBLES
+#undef	HAVE_ALIGNED_LONGLONGS
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE		PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT 	PR_BYTES_PER_SHORT
+#define BYTES_PER_INT 		PR_BYTES_PER_INT
+#define BYTES_PER_INT64		PR_BYTES_PER_INT64
+#define BYTES_PER_LONG		PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT		PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE	PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD		PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD		PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE		PR_BITS_PER_BYTE
+#define BITS_PER_SHORT		PR_BITS_PER_SHORT
+#define BITS_PER_INT		PR_BITS_PER_INT
+#define BITS_PER_INT64		PR_BITS_PER_INT64
+#define BITS_PER_LONG		PR_BITS_PER_LONG
+#define BITS_PER_FLOAT		PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE		PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD		PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2	PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2	PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2	PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2	PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2	PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2	PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2 	PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2	PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT		PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT		PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG		PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64		PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT		PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE		PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER	PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD		PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2	PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2	PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2	PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_dgux.h b/nsprpub/pr/include/md/_dgux.h
new file mode 100644
index 0000000000..66bf931695
--- /dev/null
+++ b/nsprpub/pr/include/md/_dgux.h
@@ -0,0 +1,188 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_dgux_defs_h___
+#define nspr_dgux_defs_h___
+
+/*
+ * Internal configuration macros
+ */
+
+#define PR_LINKER_ARCH	"dgux"
+#define _PR_SI_SYSNAME		"DGUX"
+#define _PR_SI_ARCHITECTURE	"x86"
+#define PR_DLL_SUFFIX		".so"
+
+#define _PR_VMBASE	 	0x30000000
+#define _PR_STACK_VMBASE	0x50000000
+#define _MD_DEFAULT_STACK_SIZE	65536L
+#define _MD_MMAP_FLAGS          MAP_PRIVATE
+
+#ifndef	HAVE_WEAK_IO_SYMBOLS
+#define	HAVE_WEAK_IO_SYMBOLS
+#endif
+
+#undef  HAVE_STACK_GROWING_UP
+#define HAVE_NETCONFIG
+#define	HAVE_DLL
+#define	USE_DLFCN
+#define NEED_STRFTIME_LOCK
+#define NEED_TIME_R
+#define _PR_NEED_STRCASECMP
+#define _PR_POLL_AVAILABLE
+#define _PR_USE_POLL
+#define _PR_NO_LARGE_FILES
+#define _PR_STAT_HAS_ONLY_ST_ATIME
+
+#define USE_SETJMP
+
+#include <setjmp.h>
+
+#define _SETJMP setjmp
+#define _LONGJMP longjmp
+#define _PR_CONTEXT_TYPE         jmp_buf
+#define _MD_GET_SP(_t)           (_t)->md.context[4]
+#define _PR_NUM_GCREGS	_JBLEN
+
+#define CONTEXT(_th) ((_th)->md.context)
+
+/*
+** Initialize the thread context preparing it to execute _main.
+*/
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \
+{								  \
+    *status = PR_TRUE; \
+    if(_SETJMP(CONTEXT(_thread))) (*_main)(); \
+    _MD_GET_SP(_thread) = (int) ((_sp) - 128); \
+}
+
+#define _MD_SWITCH_CONTEXT(_thread)  \
+    if (!_SETJMP(CONTEXT(_thread))) { \
+	(_thread)->md.errcode = errno;  \
+	_PR_Schedule();		     \
+    }
+
+/*
+** Restore a thread context, saved by _MD_SWITCH_CONTEXT
+*/
+#define _MD_RESTORE_CONTEXT(_thread) \
+{				     \
+    errno = (_thread)->md.errcode;	     \
+    _MD_SET_CURRENT_THREAD(_thread); \
+    _LONGJMP(CONTEXT(_thread), 1);    \
+}
+
+/* Machine-dependent (MD) data structures.
+ * Don't use SVR4 native threads (yet). 
+ */
+
+struct _MDThread {
+    _PR_CONTEXT_TYPE context;
+    int id;
+    int errcode;
+};
+
+struct _MDThreadStack {
+    PRInt8 notused;
+};
+
+struct _MDLock {
+    PRInt8 notused;
+};
+
+struct _MDSemaphore {
+    PRInt8 notused;
+};
+
+struct _MDCVar {
+    PRInt8 notused;
+};
+
+struct _MDSegment {
+    PRInt8 notused;
+};
+
+/*
+ * md-specific cpu structure field
+ */
+#define _PR_MD_MAX_OSFD FD_SETSIZE
+
+struct _MDCPU_Unix {
+    PRCList ioQ;
+    PRUint32 ioq_timeout;
+    PRInt32 ioq_max_osfd;
+    PRInt32 ioq_osfd_cnt;
+#ifndef _PR_USE_POLL
+    fd_set fd_read_set, fd_write_set, fd_exception_set;
+    PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
+                fd_exception_cnt[_PR_MD_MAX_OSFD];
+#else
+    struct pollfd *ioq_pollfds;
+    int ioq_pollfds_size;
+#endif  /* _PR_USE_POLL */
+};
+
+#define _PR_IOQ(_cpu)               ((_cpu)->md.md_unix.ioQ)
+#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
+#define _PR_FD_READ_SET(_cpu)       ((_cpu)->md.md_unix.fd_read_set)
+#define _PR_FD_READ_CNT(_cpu)       ((_cpu)->md.md_unix.fd_read_cnt)
+#define _PR_FD_WRITE_SET(_cpu)      ((_cpu)->md.md_unix.fd_write_set)
+#define _PR_FD_WRITE_CNT(_cpu)      ((_cpu)->md.md_unix.fd_write_cnt)
+#define _PR_FD_EXCEPTION_SET(_cpu)  ((_cpu)->md.md_unix.fd_exception_set)
+#define _PR_FD_EXCEPTION_CNT(_cpu)  ((_cpu)->md.md_unix.fd_exception_cnt)
+#define _PR_IOQ_TIMEOUT(_cpu)       ((_cpu)->md.md_unix.ioq_timeout)
+#define _PR_IOQ_MAX_OSFD(_cpu)      ((_cpu)->md.md_unix.ioq_max_osfd)
+#define _PR_IOQ_OSFD_CNT(_cpu)      ((_cpu)->md.md_unix.ioq_osfd_cnt)
+#define _PR_IOQ_POLLFDS(_cpu)       ((_cpu)->md.md_unix.ioq_pollfds)
+#define _PR_IOQ_POLLFDS_SIZE(_cpu)  ((_cpu)->md.md_unix.ioq_pollfds_size)
+
+#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)  32
+
+struct _MDCPU {
+    struct _MDCPU_Unix md_unix;
+};
+
+#define _MD_INIT_LOCKS()
+#define _MD_NEW_LOCK(lock) PR_SUCCESS
+#define _MD_FREE_LOCK(lock)
+#define _MD_LOCK(lock)
+#define _MD_UNLOCK(lock)
+#define _MD_INIT_IO()
+#define _MD_IOQ_LOCK()
+#define _MD_IOQ_UNLOCK()
+
+/*
+ * The following are copied from _sunos.h, _aix.h.  This means
+ * some of them should probably be moved into _unixos.h.  But
+ * _irix.h seems to be quite different in regard to these macros.
+ */
+#define _MD_INTERVAL_USE_GTOD
+
+#define _MD_EARLY_INIT		_MD_EarlyInit
+#define _MD_FINAL_INIT		_PR_UnixInit
+#define _MD_INIT_RUNNING_CPU(cpu) _MD_unix_init_running_cpu(cpu)
+#define _MD_INIT_THREAD         _MD_InitializeThread
+#define _MD_EXIT_THREAD(thread)
+#define	_MD_SUSPEND_THREAD(thread)
+#define	_MD_RESUME_THREAD(thread)
+#define _MD_CLEAN_THREAD(_thread)
+
+/*
+ * We wrapped the select() call.  _MD_SELECT refers to the built-in,
+ * unwrapped version.
+ */
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/time.h>
+extern int _select(int nfds, fd_set *readfds, fd_set *writefds,
+	fd_set *execptfds, struct timeval *timeout);
+#define _MD_SELECT _select
+
+#define _MD_POLL _poll
+#include <poll.h>
+#include <stropts.h>
+extern int _poll(struct pollfd *fds, unsigned long nfds, int timeout);
+
+#endif /* nspr_dgux_defs_h___ */
diff --git a/nsprpub/pr/include/md/_freebsd.cfg b/nsprpub/pr/include/md/_freebsd.cfg
new file mode 100644
index 0000000000..1d1039a5b8
--- /dev/null
+++ b/nsprpub/pr/include/md/_freebsd.cfg
@@ -0,0 +1,594 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_UNIX
+#define XP_UNIX
+#endif
+
+#ifndef FREEBSD
+#define FREEBSD
+#endif
+
+#define PR_AF_INET6 28  /* same as AF_INET6 */
+
+#ifndef HAVE_LONG_LONG
+#define HAVE_LONG_LONG
+#endif
+
+#if defined(__i386__)
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#undef	HAVE_ALIGNED_DOUBLES
+#undef	HAVE_ALIGNED_LONGLONGS
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+
+#elif defined(__alpha__)
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#define	HAVE_ALIGNED_DOUBLES
+#define	HAVE_ALIGNED_LONGLONGS
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+#define PR_BYTES_PER_WORD_LOG2   3
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+
+#elif defined(__sparc__)
+
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 1
+#define	HAVE_ALIGNED_DOUBLES
+#define	HAVE_ALIGNED_LONGLONGS
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+#define PR_BYTES_PER_WORD_LOG2   3
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+
+#elif defined(__ia64__)
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#define	HAVE_ALIGNED_DOUBLES
+#define	HAVE_ALIGNED_LONGLONGS
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+#define PR_BYTES_PER_WORD_LOG2   3
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+#define PR_ALIGN_OF_WORD    8
+
+#elif defined(__amd64__)
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#define	HAVE_ALIGNED_DOUBLES
+#define	HAVE_ALIGNED_LONGLONGS
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+#define PR_BYTES_PER_WORD_LOG2   3
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+#define PR_ALIGN_OF_WORD    8
+
+#elif defined(__powerpc64__)
+
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN    1
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+#define PR_ALIGN_OF_WORD    8
+
+#define PR_BYTES_PER_WORD_LOG2   3
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#elif defined(__powerpc__)
+
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN    1
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#elif defined(__aarch64__)
+
+#undef  IS_BIG_ENDIAN
+#define IS_LITTLE_ENDIAN 1
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+#define PR_ALIGN_OF_WORD    8
+
+#define PR_BYTES_PER_WORD_LOG2  3
+#define PR_BYTES_PER_DWORD_LOG2 3
+
+#elif defined(__arm__)
+
+#if defined(__ARMEB__) || defined(__ARM_BIG_ENDIAN__)
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN    1
+#else
+#undef  IS_BIG_ENDIAN
+#define IS_LITTLE_ENDIAN 1
+#endif
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#elif defined(__mips64__)
+
+#if defined(__MIPSEB__) || defined(_MIPSEB)
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN    1
+#else
+#undef  IS_BIG_ENDIAN
+#define IS_LITTLE_ENDIAN 1
+#endif
+
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+#define PR_ALIGN_OF_WORD    8
+
+#define PR_BYTES_PER_WORD_LOG2   3
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#elif defined(__mips__)
+
+#if defined(__MIPSEB__) || defined(_MIPSEB)
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN    1
+#else
+#undef  IS_BIG_ENDIAN
+#define IS_LITTLE_ENDIAN 1
+#endif
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#else
+
+#error "Unknown CPU architecture"
+
+#endif
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE		PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT 	PR_BYTES_PER_SHORT
+#define BYTES_PER_INT 		PR_BYTES_PER_INT
+#define BYTES_PER_INT64		PR_BYTES_PER_INT64
+#define BYTES_PER_LONG		PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT		PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE	PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD		PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD		PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE		PR_BITS_PER_BYTE
+#define BITS_PER_SHORT		PR_BITS_PER_SHORT
+#define BITS_PER_INT		PR_BITS_PER_INT
+#define BITS_PER_INT64		PR_BITS_PER_INT64
+#define BITS_PER_LONG		PR_BITS_PER_LONG
+#define BITS_PER_FLOAT		PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE		PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD		PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2	PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2	PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2	PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2	PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2	PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2	PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2 	PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2	PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT		PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT		PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG		PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64		PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT		PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE		PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER	PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD		PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2	PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2	PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2	PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_freebsd.h b/nsprpub/pr/include/md/_freebsd.h
new file mode 100644
index 0000000000..9a179bcb78
--- /dev/null
+++ b/nsprpub/pr/include/md/_freebsd.h
@@ -0,0 +1,255 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_freebsd_defs_h___
+#define nspr_freebsd_defs_h___
+
+#include "prthread.h"
+
+#if __FreeBSD__ >= 2
+#include <osreldate.h>  /* for __FreeBSD_version */
+#endif
+#include <sys/syscall.h>
+
+#define PR_LINKER_ARCH	"freebsd"
+#define _PR_SI_SYSNAME  "FREEBSD"
+#if defined(__i386__)
+#define _PR_SI_ARCHITECTURE "x86"
+#elif defined(__alpha__)
+#define _PR_SI_ARCHITECTURE "alpha"
+#elif defined(__sparc__)
+#define _PR_SI_ARCHITECTURE "sparc"
+#elif defined(__ia64__)
+#define _PR_SI_ARCHITECTURE "ia64"
+#elif defined(__amd64__)
+#define _PR_SI_ARCHITECTURE "amd64"
+#elif defined(__powerpc64__)
+#define _PR_SI_ARCHITECTURE "powerpc64"
+#elif defined(__powerpc__)
+#define _PR_SI_ARCHITECTURE "powerpc"
+#elif defined(__aarch64__)
+#define _PR_SI_ARCHITECTURE "aarch64"
+#elif defined(__arm__)
+#define _PR_SI_ARCHITECTURE "arm"
+#elif defined(__mips64__)
+#define _PR_SI_ARCHITECTURE "mips64"
+#elif defined(__mips__)
+#define _PR_SI_ARCHITECTURE "mips"
+#else
+#error "Unknown CPU architecture"
+#endif
+#if defined(__ELF__)
+#define PR_DLL_SUFFIX          ".so"
+#else
+#define PR_DLL_SUFFIX          ".so.1.0"
+#endif
+
+#define _PR_VMBASE              0x30000000
+#define _PR_STACK_VMBASE	0x50000000
+#define _MD_DEFAULT_STACK_SIZE	65536L
+#define _MD_MMAP_FLAGS          MAP_PRIVATE
+
+#undef  HAVE_STACK_GROWING_UP
+#define HAVE_DLL
+#define USE_DLFCN
+#define _PR_HAVE_SOCKADDR_LEN
+#define _PR_STAT_HAS_ST_ATIMESPEC
+#define _PR_HAVE_LARGE_OFF_T
+
+#if defined(_PR_PTHREADS)
+#if __FreeBSD_version >= 400008
+/*
+ * libc_r before this version of FreeBSD doesn't have poll().
+ * Although libc has poll(), it is not thread-safe so we can't
+ * use it in the pthreads version.
+ */
+#define _PR_POLL_AVAILABLE
+#endif
+#else
+#if __FreeBSD_version >= 300000
+#define _PR_POLL_AVAILABLE
+#define _PR_USE_POLL
+#endif
+#endif
+
+#define _PR_HAVE_SYSV_SEMAPHORES
+#define PR_HAVE_SYSV_NAMED_SHARED_MEMORY
+
+#if __FreeBSD_version >= 400014
+#define _PR_INET6
+#define _PR_HAVE_INET_NTOP
+#define _PR_HAVE_GETHOSTBYNAME2
+#define _PR_HAVE_GETADDRINFO
+#define _PR_INET6_PROBE
+#define _PR_IPV6_V6ONLY_PROBE
+#endif
+
+#define USE_SETJMP
+
+#ifndef _PR_PTHREADS
+#include <setjmp.h>
+
+#define PR_CONTEXT_TYPE	sigjmp_buf
+
+#define CONTEXT(_th) ((_th)->md.context)
+
+#define _MD_GET_SP(_th)    (_th)->md.context[0]._sjb[2]
+#define PR_NUM_GCREGS	_JBLEN
+
+/*
+** Initialize a thread context to run "_main()" when started
+*/
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)  \
+{  \
+    *status = PR_TRUE;  \
+    if (sigsetjmp(CONTEXT(_thread), 1)) {  \
+        _main();  \
+    }  \
+    _MD_GET_SP(_thread) = (unsigned char*) ((_sp) - 64); \
+}
+
+#define _MD_SWITCH_CONTEXT(_thread)  \
+    if (!sigsetjmp(CONTEXT(_thread), 1)) {  \
+	(_thread)->md.errcode = errno;  \
+	_PR_Schedule();  \
+    }
+
+/*
+** Restore a thread context, saved by _MD_SWITCH_CONTEXT
+*/
+#define _MD_RESTORE_CONTEXT(_thread) \
+{   \
+    errno = (_thread)->md.errcode;  \
+    _MD_SET_CURRENT_THREAD(_thread);  \
+    siglongjmp(CONTEXT(_thread), 1);  \
+}
+
+/* Machine-dependent (MD) data structures */
+
+struct _MDThread {
+    PR_CONTEXT_TYPE context;
+    int id;
+    int errcode;
+};
+
+struct _MDThreadStack {
+    PRInt8 notused;
+};
+
+struct _MDLock {
+    PRInt8 notused;
+};
+
+struct _MDSemaphore {
+    PRInt8 notused;
+};
+
+struct _MDCVar {
+    PRInt8 notused;
+};
+
+struct _MDSegment {
+    PRInt8 notused;
+};
+
+/*
+ * md-specific cpu structure field
+ */
+#define _PR_MD_MAX_OSFD FD_SETSIZE
+
+struct _MDCPU_Unix {
+    PRCList ioQ;
+    PRUint32 ioq_timeout;
+    PRInt32 ioq_max_osfd;
+    PRInt32 ioq_osfd_cnt;
+#ifndef _PR_USE_POLL
+    fd_set fd_read_set, fd_write_set, fd_exception_set;
+    PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
+				fd_exception_cnt[_PR_MD_MAX_OSFD];
+#else
+	struct pollfd *ioq_pollfds;
+	int ioq_pollfds_size;
+#endif	/* _PR_USE_POLL */
+};
+
+#define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
+#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
+#define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
+#define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
+#define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
+#define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
+#define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
+#define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
+#define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
+#define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
+#define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
+#define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
+#define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)
+
+#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32
+
+struct _MDCPU {
+	struct _MDCPU_Unix md_unix;
+};
+
+#define _MD_INIT_LOCKS()
+#define _MD_NEW_LOCK(lock) PR_SUCCESS
+#define _MD_FREE_LOCK(lock)
+#define _MD_LOCK(lock)
+#define _MD_UNLOCK(lock)
+#define _MD_INIT_IO()
+#define _MD_IOQ_LOCK()
+#define _MD_IOQ_UNLOCK()
+
+extern PRStatus _MD_InitializeThread(PRThread *thread);
+
+#define _MD_INIT_RUNNING_CPU(cpu)       _MD_unix_init_running_cpu(cpu)
+#define _MD_INIT_THREAD                 _MD_InitializeThread
+#define _MD_EXIT_THREAD(thread)
+#define _MD_SUSPEND_THREAD(thread)      _MD_suspend_thread
+#define _MD_RESUME_THREAD(thread)       _MD_resume_thread
+#define _MD_CLEAN_THREAD(_thread)
+
+extern PRStatus _MD_CREATE_THREAD(
+    PRThread *thread,
+    void (*start) (void *),
+    PRThreadPriority priority,
+    PRThreadScope scope,
+    PRThreadState state,
+    PRUint32 stackSize);
+extern void _MD_SET_PRIORITY(struct _MDThread *thread, PRUintn newPri);
+extern PRStatus _MD_WAIT(PRThread *, PRIntervalTime timeout);
+extern PRStatus _MD_WAKEUP_WAITER(PRThread *);
+extern void _MD_YIELD(void);
+
+#endif /* ! _PR_PTHREADS */
+
+extern void _MD_EarlyInit(void);
+
+#define _MD_EARLY_INIT                  _MD_EarlyInit
+#define _MD_FINAL_INIT			_PR_UnixInit
+#define _PR_HAVE_CLOCK_MONOTONIC
+
+/*
+ * We wrapped the select() call.  _MD_SELECT refers to the built-in,
+ * unwrapped version.
+ */
+#define _MD_SELECT(nfds,r,w,e,tv) syscall(SYS_select,nfds,r,w,e,tv)
+
+#if defined(_PR_POLL_AVAILABLE)
+#include <poll.h>
+#define _MD_POLL(fds,nfds,timeout) syscall(SYS_poll,fds,nfds,timeout)
+#endif
+
+/* freebsd has INADDR_LOOPBACK defined, but in /usr/include/rpc/types.h, and I didn't
+   want to be including that.. */
+#ifndef INADDR_LOOPBACK
+#define INADDR_LOOPBACK         (u_long)0x7F000001
+#endif
+
+/* For writev() */
+#include <sys/uio.h>
+
+#endif /* nspr_freebsd_defs_h___ */
diff --git a/nsprpub/pr/include/md/_hpux.h b/nsprpub/pr/include/md/_hpux.h
new file mode 100644
index 0000000000..ff5243d076
--- /dev/null
+++ b/nsprpub/pr/include/md/_hpux.h
@@ -0,0 +1,288 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_xhppa_defs_h___
+#define nspr_xhppa_defs_h___
+
+/*
+ * Internal configuration macros
+ */
+
+#define PR_LINKER_ARCH    "hpux"
+#define _PR_SI_SYSNAME   "HPUX"
+#ifdef __ia64
+#define _PR_SI_ARCHITECTURE "ia64"
+#define PR_DLL_SUFFIX        ".so"
+#else
+/*
+ * _PR_SI_ARCHITECTURE must be "hppa1.1" for backward compatibility.
+ * It was changed to "hppa" in NSPR 4.6.2, but was changed back in
+ * NSPR 4.6.4.
+ */
+#define _PR_SI_ARCHITECTURE "hppa1.1"
+#define PR_DLL_SUFFIX        ".sl"
+#endif
+
+#define _PR_VMBASE        0x30000000 
+#define _PR_STACK_VMBASE    0x50000000
+/*
+ * _USE_BIG_FDS increases the size of fd_set from 256 bytes to
+ * about 7500 bytes.  PR_Poll allocates three fd_sets on the
+ * stack, so it is safer to also increase the default thread
+ * stack size.
+ */
+#define _MD_DEFAULT_STACK_SIZE    (2*65536L)
+#define _MD_MINIMUM_STACK_SIZE    (2*65536L)
+#define _MD_MMAP_FLAGS          MAP_PRIVATE
+
+#define NEED_TIME_R
+
+#define HAVE_STACK_GROWING_UP
+#undef	HAVE_WEAK_IO_SYMBOLS
+#undef	HAVE_WEAK_MALLOC_SYMBOLS
+#define	HAVE_DLL
+#ifdef IS_64
+#define USE_DLFCN
+#else
+#define USE_HPSHL
+#endif
+#ifndef HAVE_STRERROR
+#define HAVE_STRERROR
+#endif
+#define _PR_POLL_AVAILABLE
+#define _PR_USE_POLL
+#define _PR_STAT_HAS_ONLY_ST_ATIME
+#define _PR_HAVE_POSIX_SEMAPHORES
+#define PR_HAVE_POSIX_NAMED_SHARED_MEMORY
+#define _PR_ACCEPT_INHERIT_NONBLOCK
+
+#if defined(__ia64)
+#define _PR_HAVE_ATOMIC_OPS
+#define _MD_INIT_ATOMIC()
+extern PRInt32 _PR_ia64_AtomicIncrement(PRInt32 *val);
+#define _MD_ATOMIC_INCREMENT          _PR_ia64_AtomicIncrement
+extern PRInt32 _PR_ia64_AtomicDecrement(PRInt32 *val);
+#define _MD_ATOMIC_DECREMENT          _PR_ia64_AtomicDecrement
+extern PRInt32 _PR_ia64_AtomicAdd(PRInt32 *ptr, PRInt32 val);
+#define _MD_ATOMIC_ADD                _PR_ia64_AtomicAdd
+extern PRInt32 _PR_ia64_AtomicSet(PRInt32 *val, PRInt32 newval);
+#define _MD_ATOMIC_SET                _PR_ia64_AtomicSet
+#endif
+
+#define _PR_HAVE_GETIPNODEBYNAME
+#define _PR_HAVE_GETIPNODEBYADDR
+#define _PR_HAVE_GETADDRINFO
+#ifdef _PR_INET6
+#define _PR_HAVE_INET_NTOP
+#else
+#define _PR_INET6_PROBE
+
+/* for HP-UX 11.11 without IPv6 */
+#ifndef AF_INET6
+#define AF_INET6       22
+#define AI_CANONNAME   2
+#define AI_NUMERICHOST 4
+#define AI_NUMERICSERV 8
+#define AI_V4MAPPED    0x00000010
+#define AI_ADDRCONFIG  0x00000040
+#define AI_ALL         0x00000020
+#define AI_DEFAULT     (AI_V4MAPPED|AI_ADDRCONFIG)
+#define NI_NUMERICHOST 2
+struct addrinfo {
+    int        ai_flags;    /* AI_PASSIVE, AI_CANONNAME */
+    int        ai_family;   /* PF_xxx */
+    int        ai_socktype; /* SOCK_xxx */
+    int        ai_protocol; /* IPPROTO_xxx for IPv4 and IPv6 */
+    socklen_t  ai_addrlen;  /* length of ai_addr */
+    char            *ai_canonname;    /* canonical name for host */
+    struct sockaddr *ai_addr;     /* binary address */
+    struct addrinfo *ai_next;     /* next structure in linked list */
+};
+#endif    /* for HP-UX 11.11 without IPv6 */
+
+#define _PR_HAVE_MD_SOCKADDR_IN6
+/* isomorphic to struct in6_addr on HP-UX B.11.23 */
+struct _md_in6_addr {
+    union {
+        PRUint8   _S6_u8[16];
+        PRUint16  _S6_u16[8];
+        PRUint32  _S6_u32[4];
+        PRUint32  __S6_align;
+    } _s6_un;
+};
+/* isomorphic to struct sockaddr_in6 on HP-UX B.11.23 */
+struct _md_sockaddr_in6 {
+    PRUint16 sin6_family;
+    PRUint16 sin6_port;
+    PRUint32 sin6_flowinfo;
+    struct _md_in6_addr sin6_addr;
+    PRUint32 sin6_scope_id;
+};
+#endif
+
+#if !defined(_PR_PTHREADS)
+
+#include <syscall.h>
+#include <setjmp.h>
+
+#define USE_SETJMP
+
+#define _MD_GET_SP(_t) (*((int *)((_t)->md.jb) + 1))
+#define PR_NUM_GCREGS _JBLEN
+/* Caveat: This makes jmp_buf full of doubles. */
+#define CONTEXT(_th) ((_th)->md.jb)
+
+    /* Stack needs two frames (64 bytes) at the bottom */ \
+#define _MD_SET_THR_SP(_t, _sp)     ((_MD_GET_SP(_t)) = (int) (_sp + 64 *2))
+#define SAVE_CONTEXT(_th)           _setjmp(CONTEXT(_th))
+#define GOTO_CONTEXT(_th)           _longjmp(CONTEXT(_th), 1)
+
+#if !defined(PTHREADS_USER)
+
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \
+{ \
+    *(status) = PR_TRUE; \
+    if (_setjmp(CONTEXT(_thread))) (*_main)(); \
+    /* Stack needs two frames (64 bytes) at the bottom */ \
+    (_MD_GET_SP(_thread)) = (int) ((_sp) + 64*2); \
+}
+
+#define _MD_SWITCH_CONTEXT(_thread) \
+    if (!_setjmp(CONTEXT(_thread))) { \
+    (_thread)->md.errcode = errno; \
+    _PR_Schedule(); \
+    }
+
+/*
+** Restore a thread context, saved by _MD_SWITCH_CONTEXT
+*/
+#define _MD_RESTORE_CONTEXT(_thread) \
+{ \
+    errno = (_thread)->md.errcode; \
+    _MD_SET_CURRENT_THREAD(_thread); \
+    _longjmp(CONTEXT(_thread), 1); \
+}
+
+/* Machine-dependent (MD) data structures.  HP-UX has no native threads. */
+
+struct _MDThread {
+    jmp_buf jb;
+    int id;
+    int errcode;
+};
+
+struct _MDThreadStack {
+    PRInt8 notused;
+};
+
+struct _MDLock {
+    PRInt8 notused;
+};
+
+struct _MDSemaphore {
+    PRInt8 notused;
+};
+
+struct _MDCVar {
+    PRInt8 notused;
+};
+
+struct _MDSegment {
+    PRInt8 notused;
+};
+
+/*
+ * md-specific cpu structure field
+ */
+#define _PR_MD_MAX_OSFD FD_SETSIZE
+
+struct _MDCPU_Unix {
+    PRCList ioQ;
+    PRUint32 ioq_timeout;
+    PRInt32 ioq_max_osfd;
+    PRInt32 ioq_osfd_cnt;
+#ifndef _PR_USE_POLL
+    fd_set fd_read_set, fd_write_set, fd_exception_set;
+    PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
+				fd_exception_cnt[_PR_MD_MAX_OSFD];
+#else
+	struct pollfd *ioq_pollfds;
+	int ioq_pollfds_size;
+#endif	/* _PR_USE_POLL */
+};
+
+#define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
+#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
+#define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
+#define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
+#define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
+#define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
+#define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
+#define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
+#define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
+#define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
+#define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
+#define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
+#define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)
+
+#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32
+
+struct _MDCPU {
+    struct _MDCPU_Unix md_unix;
+};
+
+#define _MD_INIT_LOCKS()
+#define _MD_NEW_LOCK(lock) PR_SUCCESS
+#define _MD_FREE_LOCK(lock)
+#define _MD_LOCK(lock)
+#define _MD_UNLOCK(lock)
+#define _MD_INIT_IO()
+#define _MD_IOQ_LOCK()
+#define _MD_IOQ_UNLOCK()
+
+#define _MD_INIT_RUNNING_CPU(cpu)       _MD_unix_init_running_cpu(cpu)
+#define _MD_INIT_THREAD                 _MD_InitializeThread
+#define _MD_EXIT_THREAD(thread)
+#define _MD_SUSPEND_THREAD(thread)      _MD_suspend_thread
+#define _MD_RESUME_THREAD(thread)       _MD_resume_thread
+#define _MD_CLEAN_THREAD(_thread)
+
+#else /* PTHREADS_USER	*/
+
+#include "_nspr_pthread.h"
+
+#endif /* PTHREADS_USER	*/
+
+#endif  /* !defined(_PR_PTHREADS) */
+
+#if !defined(PTHREADS_USER)
+#define _MD_EARLY_INIT                 	_MD_EarlyInit
+#define _MD_FINAL_INIT					_PR_UnixInit
+#endif 
+
+#if defined(HPUX_LW_TIMER)
+extern void _PR_HPUX_LW_IntervalInit(void);
+extern PRIntervalTime _PR_HPUX_LW_GetInterval(void);
+#define _MD_INTERVAL_INIT                 _PR_HPUX_LW_IntervalInit
+#define _MD_GET_INTERVAL                  _PR_HPUX_LW_GetInterval
+#define _MD_INTERVAL_PER_SEC()            1000
+#else
+#define _MD_INTERVAL_USE_GTOD
+#endif
+
+/*
+ * We wrapped the select() call.  _MD_SELECT refers to the built-in,
+ * unwrapped version.
+ */
+#define _MD_SELECT(nfds,r,w,e,tv) syscall(SYS_select,nfds,r,w,e,tv)
+
+#include <poll.h>
+#define _MD_POLL(fds,nfds,timeout) syscall(SYS_poll,fds,nfds,timeout)
+
+#ifdef HPUX11
+extern void _MD_hpux_map_sendfile_error(int err);
+#endif /* HPUX11 */
+
+#endif /* nspr_xhppa_defs_h___ */
diff --git a/nsprpub/pr/include/md/_hpux32.cfg b/nsprpub/pr/include/md/_hpux32.cfg
new file mode 100644
index 0000000000..08950cbf13
--- /dev/null
+++ b/nsprpub/pr/include/md/_hpux32.cfg
@@ -0,0 +1,112 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_UNIX
+#define XP_UNIX
+#endif
+
+#ifndef HPUX
+#define HPUX
+#endif
+
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 1
+
+#define PR_AF_INET6 22  /* same as AF_INET6 */
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BYTES_PER_WORD_LOG2 2
+#define PR_BYTES_PER_DWORD_LOG2 3
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 4
+
+#ifndef HAVE_LONG_LONG
+#define	HAVE_LONG_LONG
+#endif
+#define	HAVE_ALIGNED_DOUBLES
+#define	HAVE_ALIGNED_LONGLONGS
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE		PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT 	PR_BYTES_PER_SHORT
+#define BYTES_PER_INT 		PR_BYTES_PER_INT
+#define BYTES_PER_INT64		PR_BYTES_PER_INT64
+#define BYTES_PER_LONG		PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT		PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE	PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD		PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD		PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE		PR_BITS_PER_BYTE
+#define BITS_PER_SHORT		PR_BITS_PER_SHORT
+#define BITS_PER_INT		PR_BITS_PER_INT
+#define BITS_PER_INT64		PR_BITS_PER_INT64
+#define BITS_PER_LONG		PR_BITS_PER_LONG
+#define BITS_PER_FLOAT		PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE		PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD		PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2	PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2	PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2	PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2	PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2	PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2	PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2 	PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2	PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT		PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT		PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG		PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64		PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT		PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE		PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER	PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD		PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2	PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2	PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2	PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_hpux64.cfg b/nsprpub/pr/include/md/_hpux64.cfg
new file mode 100644
index 0000000000..028a034f68
--- /dev/null
+++ b/nsprpub/pr/include/md/_hpux64.cfg
@@ -0,0 +1,113 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_UNIX
+#define XP_UNIX
+#endif
+
+#ifndef HPUX
+#define HPUX
+#endif
+
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 1
+#define IS_64
+
+#define PR_AF_INET6 22  /* same as AF_INET6 */
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BYTES_PER_WORD_LOG2 3
+#define PR_BYTES_PER_DWORD_LOG2 3
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+
+#ifndef HAVE_LONG_LONG
+#define	HAVE_LONG_LONG
+#endif
+#define	HAVE_ALIGNED_DOUBLES
+#define	HAVE_ALIGNED_LONGLONGS
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE		PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT 	PR_BYTES_PER_SHORT
+#define BYTES_PER_INT 		PR_BYTES_PER_INT
+#define BYTES_PER_INT64		PR_BYTES_PER_INT64
+#define BYTES_PER_LONG		PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT		PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE	PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD		PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD		PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE		PR_BITS_PER_BYTE
+#define BITS_PER_SHORT		PR_BITS_PER_SHORT
+#define BITS_PER_INT		PR_BITS_PER_INT
+#define BITS_PER_INT64		PR_BITS_PER_INT64
+#define BITS_PER_LONG		PR_BITS_PER_LONG
+#define BITS_PER_FLOAT		PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE		PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD		PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2	PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2	PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2	PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2	PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2	PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2	PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2 	PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2	PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT		PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT		PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG		PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64		PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT		PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE		PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER	PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD		PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2	PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2	PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2	PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_irix.h b/nsprpub/pr/include/md/_irix.h
new file mode 100644
index 0000000000..04413b992c
--- /dev/null
+++ b/nsprpub/pr/include/md/_irix.h
@@ -0,0 +1,438 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_irix_defs_h___
+#define nspr_irix_defs_h___
+
+#define _PR_HAVE_ATOMIC_CAS
+
+/*
+ * MipsPro assembler defines _LANGUAGE_ASSEMBLY
+ */
+#ifndef _LANGUAGE_ASSEMBLY
+
+#include "prclist.h"
+#include "prthread.h"
+#include <sys/ucontext.h>
+
+/*
+ * Internal configuration macros
+ */
+
+#define PR_LINKER_ARCH          "irix"
+#define _PR_SI_SYSNAME          "IRIX"
+#define _PR_SI_ARCHITECTURE     "mips"
+#define PR_DLL_SUFFIX		".so"
+
+#define _PR_VMBASE              0x30000000
+#define _PR_STACK_VMBASE        0x50000000
+#define _PR_NUM_GCREGS          9
+#define _MD_MMAP_FLAGS          MAP_PRIVATE
+
+#define _MD_DEFAULT_STACK_SIZE  65536L
+#define _MD_MIN_STACK_SIZE      16384L
+
+#undef  HAVE_STACK_GROWING_UP
+#define HAVE_WEAK_IO_SYMBOLS
+#define HAVE_WEAK_MALLOC_SYMBOLS
+#define HAVE_DLL
+#define USE_DLFCN
+#define _PR_HAVE_ATOMIC_OPS
+#define _PR_POLL_AVAILABLE
+#define _PR_USE_POLL
+#define _PR_STAT_HAS_ST_ATIM
+#define _PR_HAVE_OFF64_T
+#define HAVE_POINTER_LOCALTIME_R
+#define _PR_HAVE_POSIX_SEMAPHORES
+#define PR_HAVE_POSIX_NAMED_SHARED_MEMORY
+#define _PR_ACCEPT_INHERIT_NONBLOCK
+
+#ifdef _PR_INET6
+#define _PR_HAVE_INET_NTOP
+#define _PR_HAVE_GETIPNODEBYNAME
+#define _PR_HAVE_GETIPNODEBYADDR
+#define _PR_HAVE_GETADDRINFO
+#endif
+
+/* Initialization entry points */
+NSPR_API(void) _MD_EarlyInit(void);
+#define _MD_EARLY_INIT _MD_EarlyInit
+
+NSPR_API(void) _MD_IrixInit(void);
+#define _MD_FINAL_INIT _MD_IrixInit
+
+#define _MD_INIT_IO()
+
+/* Timer operations */
+NSPR_API(PRIntervalTime) _MD_IrixGetInterval(void);
+#define _MD_GET_INTERVAL _MD_IrixGetInterval
+
+NSPR_API(PRIntervalTime) _MD_IrixIntervalPerSec(void);
+#define _MD_INTERVAL_PER_SEC _MD_IrixIntervalPerSec
+
+/* GC operations */
+NSPR_API(void *) _MD_GetSP(PRThread *thread);
+#define    _MD_GET_SP _MD_GetSP
+
+/* The atomic operations */
+#include <mutex.h>
+#define _MD_INIT_ATOMIC()
+#define _MD_ATOMIC_INCREMENT(val) add_then_test((unsigned long*)val, 1)
+#define _MD_ATOMIC_ADD(ptr, val) add_then_test((unsigned long*)ptr, (unsigned long)val)
+#define _MD_ATOMIC_DECREMENT(val) add_then_test((unsigned long*)val, 0xffffffff)
+#define _MD_ATOMIC_SET(val, newval) test_and_set((unsigned long*)val, newval)
+
+#if defined(_PR_PTHREADS)
+#else /* defined(_PR_PTHREADS) */
+
+/************************************************************************/
+
+#include <setjmp.h>
+#include <errno.h>
+#include <unistd.h>
+#include <bstring.h>
+#include <sys/time.h>
+#include <ulocks.h>
+#include <sys/prctl.h>
+
+
+/*
+ * Data region private to each sproc. This region is setup by calling
+ * mmap(...,MAP_LOCAL,...). The private data is mapped at the same
+ * address in every sproc, but every sproc gets a private mapping.
+ *
+ * Just make sure that this structure fits in a page, as only one page
+ * is allocated for the private region.
+ */
+struct sproc_private_data {
+    struct PRThread *me;
+    struct _PRCPU *cpu;
+    struct PRThread *last;
+    PRUintn intsOff;
+	int		sproc_pid;
+};
+
+extern char *_nspr_sproc_private;
+
+#define _PR_PRDA() ((struct sproc_private_data *) _nspr_sproc_private)
+#define _MD_SET_CURRENT_THREAD(_thread) _PR_PRDA()->me = (_thread)
+#define _MD_THIS_THREAD() (_PR_PRDA()->me)
+#define _MD_LAST_THREAD() (_PR_PRDA()->last)
+#define _MD_SET_LAST_THREAD(_thread) _PR_PRDA()->last = (_thread)
+#define _MD_CURRENT_CPU() (_PR_PRDA()->cpu)
+#define _MD_SET_CURRENT_CPU(_cpu) _PR_PRDA()->cpu = (_cpu)
+#define _MD_SET_INTSOFF(_val) (_PR_PRDA()->intsOff = _val)
+#define _MD_GET_INTSOFF() (_PR_PRDA()->intsOff)
+
+#define _MD_SET_SPROC_PID(_val) (_PR_PRDA()->sproc_pid = _val)
+#define _MD_GET_SPROC_PID() (_PR_PRDA()->sproc_pid)
+
+NSPR_API(struct PRThread*) _MD_get_attached_thread(void);
+NSPR_API(struct PRThread*) _MD_get_current_thread(void);
+#define _MD_GET_ATTACHED_THREAD()	_MD_get_attached_thread()
+#define _MD_CURRENT_THREAD()	_MD_get_current_thread()
+
+#define _MD_CHECK_FOR_EXIT() {					\
+		if (_pr_irix_exit_now) {				\
+			_PR_POST_SEM(_pr_irix_exit_sem);	\
+			_MD_Wakeup_CPUs();					\
+			_exit(0);							\
+		}										\
+	}
+		
+#define _MD_ATTACH_THREAD(threadp)
+
+#define _MD_SAVE_ERRNO(_thread)			(_thread)->md.errcode = errno;
+#define _MD_RESTORE_ERRNO(_thread)		errno = (_thread)->md.errcode;
+
+extern struct _PRCPU  *_pr_primordialCPU;
+extern usema_t *_pr_irix_exit_sem;
+extern PRInt32 _pr_irix_exit_now;
+extern int _pr_irix_primoridal_cpu_fd[];
+extern PRInt32 _pr_irix_process_exit;
+extern PRInt32 _pr_irix_process_exit_code;
+
+/* Thread operations */
+#define _PR_LOCK_HEAP()	{						\
+			PRIntn _is;					\
+				if (_pr_primordialCPU) {		\
+				if (_MD_GET_ATTACHED_THREAD() && 		\
+					!_PR_IS_NATIVE_THREAD( 		\
+					_MD_GET_ATTACHED_THREAD()))	\
+						_PR_INTSOFF(_is); 	\
+					_PR_LOCK(_pr_heapLock);		\
+				}
+
+#define _PR_UNLOCK_HEAP() 	if (_pr_primordialCPU)	{		\
+					_PR_UNLOCK(_pr_heapLock);	\
+				if (_MD_GET_ATTACHED_THREAD() && 		\
+					!_PR_IS_NATIVE_THREAD( 		\
+					_MD_GET_ATTACHED_THREAD()))	\
+						_PR_INTSON(_is);	\
+				}					\
+			  }
+
+#define _PR_OPEN_POLL_SEM(_sem)  usopenpollsema(_sem, 0666)
+#define _PR_WAIT_SEM(_sem) uspsema(_sem)
+#define _PR_POST_SEM(_sem) usvsema(_sem)
+
+#define _MD_CVAR_POST_SEM(threadp)	usvsema((threadp)->md.cvar_pollsem)
+
+#define _MD_IOQ_LOCK()
+#define _MD_IOQ_UNLOCK()
+
+struct _MDLock {
+    ulock_t lock;
+	usptr_t *arena;
+};
+
+/*
+ * disable pre-emption for the LOCAL threads when calling the arena lock
+ * routines
+ */
+
+#define _PR_LOCK(lock) {						\
+		PRIntn _is;						\
+		PRThread *me = _MD_GET_ATTACHED_THREAD();			\
+		if (me && !_PR_IS_NATIVE_THREAD(me))			\
+			_PR_INTSOFF(_is); 				\
+		ussetlock(lock);					\
+		if (me && !_PR_IS_NATIVE_THREAD(me))			\
+			_PR_FAST_INTSON(_is); 				\
+	}
+
+#define _PR_UNLOCK(lock) {						\
+		PRIntn _is;						\
+		PRThread *me = _MD_GET_ATTACHED_THREAD();			\
+		if (me && !_PR_IS_NATIVE_THREAD(me))			\
+			_PR_INTSOFF(_is); 				\
+		usunsetlock(lock);					\
+		if (me && !_PR_IS_NATIVE_THREAD(me))			\
+			_PR_FAST_INTSON(_is); 				\
+	}
+
+NSPR_API(PRStatus) _MD_NEW_LOCK(struct _MDLock *md);
+NSPR_API(void) _MD_FREE_LOCK(struct _MDLock *lockp);
+
+#define _MD_LOCK(_lockp) _PR_LOCK((_lockp)->lock)
+#define _MD_UNLOCK(_lockp) _PR_UNLOCK((_lockp)->lock)
+#define _MD_TEST_AND_LOCK(_lockp) (uscsetlock((_lockp)->lock, 1) == 0)
+
+extern ulock_t _pr_heapLock;
+
+struct _MDThread {
+    jmp_buf jb;
+    usptr_t     *pollsem_arena;
+    usema_t     *cvar_pollsem;
+    PRInt32     cvar_pollsemfd;
+    PRInt32     cvar_pollsem_select;    /* acquire sem by calling select */
+    PRInt32     cvar_wait;              /* if 1, thread is waiting on cvar Q */
+    PRInt32	id;
+    PRInt32	suspending_id;
+    int errcode;
+};
+
+struct _MDThreadStack {
+    PRInt8 notused;
+};
+
+struct _MDSemaphore {
+    usema_t *sem;
+};
+
+struct _MDCVar {
+    ulock_t mdcvar_lock;
+};
+
+struct _MDSegment {
+    PRInt8 notused;
+};
+
+/*
+ * md-specific cpu structure field
+ */
+#define _PR_MD_MAX_OSFD FD_SETSIZE
+
+struct _MDCPU_Unix {
+    PRCList ioQ;
+    PRUint32 ioq_timeout;
+    PRInt32 ioq_max_osfd;
+    PRInt32 ioq_osfd_cnt;
+#ifndef _PR_USE_POLL
+    fd_set fd_read_set, fd_write_set, fd_exception_set;
+    PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
+				fd_exception_cnt[_PR_MD_MAX_OSFD];
+#else
+	struct pollfd *ioq_pollfds;
+	int ioq_pollfds_size;
+#endif	/* _PR_USE_POLL */
+};
+
+#define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
+#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
+#define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
+#define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
+#define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
+#define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
+#define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
+#define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
+#define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
+#define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
+#define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
+#define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
+#define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)
+
+#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32
+
+
+struct _MDCPU {
+    PRInt32 id;
+    PRInt32 suspending_id;
+    struct _MDCPU_Unix md_unix;
+};
+
+/*
+** Initialize the thread context preparing it to execute _main.
+*/
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)	      \
+    PR_BEGIN_MACRO				      \
+	int *jb = (_thread)->md.jb;		      \
+    *status = PR_TRUE;              \
+	(void) setjmp(jb);			      \
+	(_thread)->md.jb[JB_SP] = (int) ((_sp) - 64); \
+	(_thread)->md.jb[JB_PC] = (int) _main;	      \
+	_thread->no_sched = 0; \
+    PR_END_MACRO
+
+/*
+** Switch away from the current thread context by saving its state and
+** calling the thread scheduler. Reload cpu when we come back from the
+** context switch because it might have changed.
+*
+*  XXX RUNQ lock needed before clearing _PR_NO_SCHED flag, because the
+*      thread may be unr RUNQ?
+*/
+#define _MD_SWITCH_CONTEXT(_thread) \
+    PR_BEGIN_MACRO    \
+    PR_ASSERT(_thread->no_sched); \
+    if (!setjmp(_thread->md.jb)) { \
+        _MD_SAVE_ERRNO(_thread) \
+        _MD_SET_LAST_THREAD(_thread); \
+        _PR_Schedule(); \
+    } else {      \
+        PR_ASSERT(_MD_LAST_THREAD() !=_MD_CURRENT_THREAD()); \
+            _MD_LAST_THREAD()->no_sched = 0;			\
+    }             \
+    PR_END_MACRO
+
+/*
+** Restore a thread context that was saved by _MD_SWITCH_CONTEXT or
+** initialized by _MD_INIT_CONTEXT.
+*/
+#define _MD_RESTORE_CONTEXT(_newThread) \
+    PR_BEGIN_MACRO \
+    int *jb = (_newThread)->md.jb; \
+    _MD_RESTORE_ERRNO(_newThread) \
+    _MD_SET_CURRENT_THREAD(_newThread); \
+    _newThread->no_sched = 1;		\
+    longjmp(jb, 1); \
+    PR_END_MACRO
+
+NSPR_API(PRStatus) _MD_InitThread(struct PRThread *thread,
+								PRBool wakeup_parent);
+NSPR_API(PRStatus) _MD_InitAttachedThread(struct PRThread *thread,
+									PRBool wakeup_parent);
+#define _MD_INIT_THREAD(thread) 			_MD_InitThread(thread, PR_TRUE)
+#define _MD_INIT_ATTACHED_THREAD(thread)		\
+						_MD_InitAttachedThread(thread, PR_FALSE)
+
+NSPR_API(void) _MD_ExitThread(struct PRThread *thread);
+#define _MD_EXIT_THREAD _MD_ExitThread
+
+NSPR_API(void) _MD_SuspendThread(struct PRThread *thread);
+#define _MD_SUSPEND_THREAD _MD_SuspendThread
+
+NSPR_API(void) _MD_ResumeThread(struct PRThread *thread);
+#define _MD_RESUME_THREAD _MD_ResumeThread
+
+NSPR_API(void) _MD_SuspendCPU(struct _PRCPU *thread);
+#define _MD_SUSPEND_CPU _MD_SuspendCPU
+
+NSPR_API(void) _MD_ResumeCPU(struct _PRCPU *thread);
+#define _MD_RESUME_CPU _MD_ResumeCPU
+
+#define _MD_BEGIN_SUSPEND_ALL()
+#define _MD_END_SUSPEND_ALL()
+#define _MD_BEGIN_RESUME_ALL()
+#define _MD_END_RESUME_ALL()
+
+NSPR_API(void) _MD_InitLocks(void);
+#define _MD_INIT_LOCKS _MD_InitLocks
+
+NSPR_API(void) _MD_CleanThread(struct PRThread *thread);
+#define _MD_CLEAN_THREAD _MD_CleanThread
+
+#define _MD_YIELD()    sginap(0)
+
+/* The _PR_MD_WAIT_LOCK and _PR_MD_WAKEUP_WAITER functions put to sleep and
+ * awaken a thread which is waiting on a lock or cvar.
+ */
+NSPR_API(PRStatus) _MD_wait(struct PRThread *, PRIntervalTime timeout);
+#define _MD_WAIT _MD_wait
+
+NSPR_API(void) _PR_MD_primordial_cpu();
+NSPR_API(void) _PR_MD_WAKEUP_PRIMORDIAL_CPU();
+
+NSPR_API(PRStatus) _MD_WakeupWaiter(struct PRThread *);
+#define _MD_WAKEUP_WAITER _MD_WakeupWaiter
+
+NSPR_API(void ) _MD_exit(PRIntn status);
+#define _MD_EXIT	_MD_exit
+
+#include "prthread.h"
+
+NSPR_API(void) _MD_SetPriority(struct _MDThread *thread,
+	PRThreadPriority newPri);
+#define _MD_SET_PRIORITY _MD_SetPriority
+
+NSPR_API(PRStatus) _MD_CreateThread(
+                        struct PRThread *thread,
+                        void (*start) (void *),
+                        PRThreadPriority priority,
+                        PRThreadScope scope,
+                        PRThreadState state,
+                        PRUint32 stackSize);
+#define _MD_CREATE_THREAD _MD_CreateThread
+
+extern void _MD_CleanupBeforeExit(void);
+#define _MD_CLEANUP_BEFORE_EXIT _MD_CleanupBeforeExit
+
+NSPR_API(void) _PR_MD_PRE_CLEANUP(PRThread *me);
+
+
+/* The following defines the unwrapped versions of select() and poll(). */
+extern int _select(int nfds, fd_set *readfds, fd_set *writefds,
+	fd_set *exceptfds, struct timeval *timeout);
+#define _MD_SELECT	_select
+
+#include <stropts.h>
+#include <poll.h>
+#define _MD_POLL _poll
+extern int _poll(struct pollfd *fds, unsigned long nfds, int timeout);
+
+
+#define HAVE_THREAD_AFFINITY 1
+
+NSPR_API(PRInt32) _MD_GetThreadAffinityMask(PRThread *unused, PRUint32 *mask);
+#define _MD_GETTHREADAFFINITYMASK _MD_GetThreadAffinityMask
+
+NSPR_API(void) _MD_InitRunningCPU(struct _PRCPU *cpu);
+#define    _MD_INIT_RUNNING_CPU _MD_InitRunningCPU
+
+#endif  /* defined(_PR_PTHREADS) */
+
+#endif /* _LANGUAGE_ASSEMBLY */
+
+#endif /* nspr_irix_defs_h___ */
diff --git a/nsprpub/pr/include/md/_irix32.cfg b/nsprpub/pr/include/md/_irix32.cfg
new file mode 100644
index 0000000000..3a5005c259
--- /dev/null
+++ b/nsprpub/pr/include/md/_irix32.cfg
@@ -0,0 +1,119 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef _SGI_MP_SOURCE
+#define _SGI_MP_SOURCE
+#endif
+
+#ifndef XP_UNIX
+#define XP_UNIX
+#endif
+
+#ifndef IRIX
+#define IRIX
+#endif
+
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 1
+
+#define PR_AF_INET6 24  /* same as AF_INET6 */
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_BYTES_PER_WORD_LOG2  2
+#define PR_BYTES_PER_DWORD_LOG2 3
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#ifndef HAVE_LONG_LONG
+#define HAVE_LONG_LONG
+#endif
+#define HAVE_ALIGNED_DOUBLES
+#define HAVE_ALIGNED_LONGLONGS
+
+#define _PR_POLL_BACKCOMPAT
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE		PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT 	PR_BYTES_PER_SHORT
+#define BYTES_PER_INT 		PR_BYTES_PER_INT
+#define BYTES_PER_INT64		PR_BYTES_PER_INT64
+#define BYTES_PER_LONG		PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT		PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE	PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD		PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD		PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE		PR_BITS_PER_BYTE
+#define BITS_PER_SHORT		PR_BITS_PER_SHORT
+#define BITS_PER_INT		PR_BITS_PER_INT
+#define BITS_PER_INT64		PR_BITS_PER_INT64
+#define BITS_PER_LONG		PR_BITS_PER_LONG
+#define BITS_PER_FLOAT		PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE		PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD		PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2	PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2	PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2	PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2	PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2	PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2	PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2 	PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2	PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT		PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT		PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG		PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64		PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT		PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE		PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER	PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD		PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2	PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2	PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2	PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_irix64.cfg b/nsprpub/pr/include/md/_irix64.cfg
new file mode 100644
index 0000000000..e6f29e3ad1
--- /dev/null
+++ b/nsprpub/pr/include/md/_irix64.cfg
@@ -0,0 +1,118 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef _SGI_MP_SOURCE
+#define _SGI_MP_SOURCE
+#endif
+
+#ifndef XP_UNIX
+#define XP_UNIX
+#endif
+
+#ifndef IRIX
+#define IRIX
+#endif
+
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 1
+#define IS_64
+
+#define PR_AF_INET6 24  /* same as AF_INET6 */
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_BYTES_PER_WORD_LOG2  3
+#define PR_BYTES_PER_DWORD_LOG2 3
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#ifndef HAVE_LONG_LONG
+#define HAVE_LONG_LONG
+#endif
+#define HAVE_ALIGNED_DOUBLES
+#define HAVE_ALIGNED_LONGLONGS
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE		PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT 	PR_BYTES_PER_SHORT
+#define BYTES_PER_INT 		PR_BYTES_PER_INT
+#define BYTES_PER_INT64		PR_BYTES_PER_INT64
+#define BYTES_PER_LONG		PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT		PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE	PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD		PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD		PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE		PR_BITS_PER_BYTE
+#define BITS_PER_SHORT		PR_BITS_PER_SHORT
+#define BITS_PER_INT		PR_BITS_PER_INT
+#define BITS_PER_INT64		PR_BITS_PER_INT64
+#define BITS_PER_LONG		PR_BITS_PER_LONG
+#define BITS_PER_FLOAT		PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE		PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD		PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2	PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2	PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2	PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2	PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2	PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2	PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2 	PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2	PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT		PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT		PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG		PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64		PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT		PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE		PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER	PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD		PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2	PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2	PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2	PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_linux.cfg b/nsprpub/pr/include/md/_linux.cfg
new file mode 100644
index 0000000000..8cbf0cb9b2
--- /dev/null
+++ b/nsprpub/pr/include/md/_linux.cfg
@@ -0,0 +1,1081 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * This file is used by not only Linux but also other glibc systems
+ * such as GNU/Hurd and GNU/k*BSD.
+ */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_UNIX
+#define XP_UNIX
+#endif
+
+#if !defined(LINUX) && defined(__linux__)
+#define LINUX
+#endif
+
+#ifdef __FreeBSD_kernel__
+#define PR_AF_INET6 28  /* same as AF_INET6 */
+#elif defined(__GNU__)
+#define PR_AF_INET6 26  /* same as AF_INET6 */
+#else
+#define PR_AF_INET6 10  /* same as AF_INET6 */
+#endif
+
+#ifdef __powerpc64__
+
+#ifdef __LITTLE_ENDIAN__
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#else
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN    1
+#endif
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+#define PR_ALIGN_OF_WORD    8
+
+#define PR_BYTES_PER_WORD_LOG2   3
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#elif defined(__powerpc__)
+
+#ifdef __LITTLE_ENDIAN__
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#else
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN    1
+#endif
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#elif defined(__alpha)
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+#define PR_ALIGN_OF_WORD    8
+
+#define PR_BYTES_PER_WORD_LOG2  3
+#define PR_BYTES_PER_DWORD_LOG2 3
+
+#elif defined(__ia64__)
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+#define PR_ALIGN_OF_WORD    8
+
+#define PR_BYTES_PER_WORD_LOG2  3
+#define PR_BYTES_PER_DWORD_LOG2 3
+
+#elif defined(__x86_64__)
+
+#ifdef __ILP32__
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#else
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+#define PR_ALIGN_OF_WORD    8
+
+#define PR_BYTES_PER_WORD_LOG2  3
+#define PR_BYTES_PER_DWORD_LOG2 3
+
+#endif
+
+#elif defined(__mc68000__)
+
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 1
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     2
+#define PR_ALIGN_OF_LONG    2
+#define PR_ALIGN_OF_INT64   2
+#define PR_ALIGN_OF_FLOAT   2
+#define PR_ALIGN_OF_DOUBLE  2
+#define PR_ALIGN_OF_POINTER 2
+#define PR_ALIGN_OF_WORD    2
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#elif defined(__sparc__) && defined (__arch64__)
+
+#undef	IS_LITTLE_ENDIAN
+#define	IS_BIG_ENDIAN 1
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+#define PR_ALIGN_OF_WORD    8
+
+#define PR_BYTES_PER_WORD_LOG2   3
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#elif defined(__sparc__)
+
+#undef	IS_LITTLE_ENDIAN
+#define	IS_BIG_ENDIAN 1
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#elif defined(__i386__)
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#elif defined(__mips__)
+
+#ifdef __MIPSEB__
+#define IS_BIG_ENDIAN 1
+#undef  IS_LITTLE_ENDIAN
+#elif defined(__MIPSEL__)
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#else
+#error "Unknown MIPS endianness."
+#endif
+
+#if _MIPS_SIM == _ABI64
+
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+#define PR_ALIGN_OF_WORD    8
+
+#define PR_BYTES_PER_WORD_LOG2   3
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#else /* _ABI64 */
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#endif /* _ABI64 */
+
+#elif defined(__arm__)
+
+#ifdef __ARMEB__
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 1
+#elif defined(__ARMEL__)
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#else
+#error "Unknown ARM endianness."
+#endif
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#elif defined(__aarch64__)
+
+#ifdef __AARCH64EB__
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 1
+#elif defined(__AARCH64EL__)
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#else
+#error "Unknown Aarch64 endianness."
+#endif
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+#define PR_ALIGN_OF_WORD    8
+
+#define PR_BYTES_PER_WORD_LOG2  3
+#define PR_BYTES_PER_DWORD_LOG2 3
+
+#elif defined(__hppa__)
+
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN    1
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#elif defined(__s390x__)
+
+#define IS_BIG_ENDIAN 1
+#undef  IS_LITTLE_ENDIAN
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+#define PR_ALIGN_OF_WORD    8
+
+#define PR_BYTES_PER_WORD_LOG2   3
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#elif defined(__s390__)
+
+#define IS_BIG_ENDIAN 1
+#undef  IS_LITTLE_ENDIAN
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#elif defined(__sh__)
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#elif defined(__avr32__)
+
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 1
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#elif defined(__m32r__)
+
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 1
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#elif defined(__or1k__)
+
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 1
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#else
+
+#error "Unknown CPU architecture"
+
+#endif
+
+#ifndef HAVE_LONG_LONG
+#define	HAVE_LONG_LONG
+#endif
+#if PR_ALIGN_OF_DOUBLE == 8
+#define HAVE_ALIGNED_DOUBLES
+#endif
+#if PR_ALIGN_OF_INT64 == 8
+#define HAVE_ALIGNED_LONGLONGS
+#endif
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE		PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT 	PR_BYTES_PER_SHORT
+#define BYTES_PER_INT 		PR_BYTES_PER_INT
+#define BYTES_PER_INT64		PR_BYTES_PER_INT64
+#define BYTES_PER_LONG		PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT		PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE	PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD		PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD		PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE		PR_BITS_PER_BYTE
+#define BITS_PER_SHORT		PR_BITS_PER_SHORT
+#define BITS_PER_INT		PR_BITS_PER_INT
+#define BITS_PER_INT64		PR_BITS_PER_INT64
+#define BITS_PER_LONG		PR_BITS_PER_LONG
+#define BITS_PER_FLOAT		PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE		PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD		PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2	PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2	PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2	PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2	PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2	PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2	PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2 	PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2	PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT		PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT		PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG		PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64		PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT		PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE		PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER	PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD		PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2	PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2	PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2	PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_linux.h b/nsprpub/pr/include/md/_linux.h
new file mode 100644
index 0000000000..b4b298b71c
--- /dev/null
+++ b/nsprpub/pr/include/md/_linux.h
@@ -0,0 +1,694 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * This file is used by not only Linux but also other glibc systems
+ * such as GNU/Hurd and GNU/k*BSD.
+ */
+
+#ifndef nspr_linux_defs_h___
+#define nspr_linux_defs_h___
+
+#include "prthread.h"
+
+/*
+ * Internal configuration macros
+ */
+
+#define PR_LINKER_ARCH	"linux"
+#define _PR_SI_SYSNAME  "LINUX"
+#ifdef __powerpc64__
+#define _PR_SI_ARCHITECTURE "ppc64"
+#elif defined(__powerpc__)
+#define _PR_SI_ARCHITECTURE "ppc"
+#elif defined(__alpha)
+#define _PR_SI_ARCHITECTURE "alpha"
+#elif defined(__ia64__)
+#define _PR_SI_ARCHITECTURE "ia64"
+#elif defined(__x86_64__)
+#define _PR_SI_ARCHITECTURE "x86-64"
+#elif defined(__mc68000__)
+#define _PR_SI_ARCHITECTURE "m68k"
+#elif defined(__sparc__) && defined(__arch64__)
+#define _PR_SI_ARCHITECTURE "sparc64"
+#elif defined(__sparc__)
+#define _PR_SI_ARCHITECTURE "sparc"
+#elif defined(__i386__)
+#define _PR_SI_ARCHITECTURE "x86"
+#elif defined(__mips__)
+#define _PR_SI_ARCHITECTURE "mips"
+#elif defined(__arm__)
+#define _PR_SI_ARCHITECTURE "arm"
+#elif defined(__aarch64__)
+#define _PR_SI_ARCHITECTURE "aarch64"
+#elif defined(__hppa__)
+#define _PR_SI_ARCHITECTURE "hppa"
+#elif defined(__s390x__)
+#define _PR_SI_ARCHITECTURE "s390x"
+#elif defined(__s390__)
+#define _PR_SI_ARCHITECTURE "s390"
+#elif defined(__sh__)
+#define _PR_SI_ARCHITECTURE "sh"
+#elif defined(__avr32__)
+#define _PR_SI_ARCHITECTURE "avr32"
+#elif defined(__m32r__)
+#define _PR_SI_ARCHITECTURE "m32r"
+#elif defined(__or1k__)
+#define _PR_SI_ARCHITECTURE "or1k"
+#else
+#error "Unknown CPU architecture"
+#endif
+#define PR_DLL_SUFFIX		".so"
+
+#define _PR_VMBASE              0x30000000
+#define _PR_STACK_VMBASE	0x50000000
+#define _MD_DEFAULT_STACK_SIZE	65536L
+#define _MD_MMAP_FLAGS          MAP_PRIVATE
+
+#if defined(__aarch64__) || defined(__mips__)
+#define _MD_MINIMUM_STACK_SIZE  0x20000
+#endif
+
+#undef	HAVE_STACK_GROWING_UP
+
+/*
+ * Elf linux supports dl* functions
+ */
+#define HAVE_DLL
+#define USE_DLFCN
+#if defined(ANDROID)
+#define NO_DLOPEN_NULL
+#endif
+
+#if defined(__FreeBSD_kernel__) || defined(__GNU__)
+#define _PR_HAVE_SOCKADDR_LEN
+#endif
+
+#if defined(__i386__)
+#define _PR_HAVE_ATOMIC_OPS
+#define _MD_INIT_ATOMIC()
+extern PRInt32 _PR_x86_AtomicIncrement(PRInt32 *val);
+#define _MD_ATOMIC_INCREMENT          _PR_x86_AtomicIncrement
+extern PRInt32 _PR_x86_AtomicDecrement(PRInt32 *val);
+#define _MD_ATOMIC_DECREMENT          _PR_x86_AtomicDecrement
+extern PRInt32 _PR_x86_AtomicAdd(PRInt32 *ptr, PRInt32 val);
+#define _MD_ATOMIC_ADD                _PR_x86_AtomicAdd
+extern PRInt32 _PR_x86_AtomicSet(PRInt32 *val, PRInt32 newval);
+#define _MD_ATOMIC_SET                _PR_x86_AtomicSet
+#endif
+
+#if defined(__ia64__)
+#define _PR_HAVE_ATOMIC_OPS
+#define _MD_INIT_ATOMIC()
+extern PRInt32 _PR_ia64_AtomicIncrement(PRInt32 *val);
+#define _MD_ATOMIC_INCREMENT          _PR_ia64_AtomicIncrement
+extern PRInt32 _PR_ia64_AtomicDecrement(PRInt32 *val);
+#define _MD_ATOMIC_DECREMENT          _PR_ia64_AtomicDecrement
+extern PRInt32 _PR_ia64_AtomicAdd(PRInt32 *ptr, PRInt32 val);
+#define _MD_ATOMIC_ADD                _PR_ia64_AtomicAdd
+extern PRInt32 _PR_ia64_AtomicSet(PRInt32 *val, PRInt32 newval);
+#define _MD_ATOMIC_SET                _PR_ia64_AtomicSet
+#endif
+
+#if defined(__x86_64__)
+#define _PR_HAVE_ATOMIC_OPS
+#define _MD_INIT_ATOMIC()
+extern PRInt32 _PR_x86_64_AtomicIncrement(PRInt32 *val);
+#define _MD_ATOMIC_INCREMENT          _PR_x86_64_AtomicIncrement
+extern PRInt32 _PR_x86_64_AtomicDecrement(PRInt32 *val);
+#define _MD_ATOMIC_DECREMENT          _PR_x86_64_AtomicDecrement
+extern PRInt32 _PR_x86_64_AtomicAdd(PRInt32 *ptr, PRInt32 val);
+#define _MD_ATOMIC_ADD                _PR_x86_64_AtomicAdd
+extern PRInt32 _PR_x86_64_AtomicSet(PRInt32 *val, PRInt32 newval);
+#define _MD_ATOMIC_SET                _PR_x86_64_AtomicSet
+#endif
+
+#if defined(__or1k__)
+#if defined(__GNUC__)
+/* Use GCC built-in functions */
+#define _PR_HAVE_ATOMIC_OPS
+#define _MD_INIT_ATOMIC()
+#define _MD_ATOMIC_INCREMENT(ptr) __sync_add_and_fetch(ptr, 1)
+#define _MD_ATOMIC_DECREMENT(ptr) __sync_sub_and_fetch(ptr, 1)
+#define _MD_ATOMIC_ADD(ptr, i) __sync_add_and_fetch(ptr, i)
+#define _MD_ATOMIC_SET(ptr, nv) __sync_lock_test_and_set(ptr, nv)
+#endif
+#endif
+
+#if defined(__powerpc__) && !defined(__powerpc64__)
+#define _PR_HAVE_ATOMIC_OPS
+#define _MD_INIT_ATOMIC()
+extern PRInt32 _PR_ppc_AtomicIncrement(PRInt32 *val);
+#define _MD_ATOMIC_INCREMENT          _PR_ppc_AtomicIncrement
+extern PRInt32 _PR_ppc_AtomicDecrement(PRInt32 *val);
+#define _MD_ATOMIC_DECREMENT          _PR_ppc_AtomicDecrement
+extern PRInt32 _PR_ppc_AtomicAdd(PRInt32 *ptr, PRInt32 val);
+#define _MD_ATOMIC_ADD                _PR_ppc_AtomicAdd
+extern PRInt32 _PR_ppc_AtomicSet(PRInt32 *val, PRInt32 newval);
+#define _MD_ATOMIC_SET                _PR_ppc_AtomicSet
+#endif
+
+#if defined(__powerpc64__)
+#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)
+/* Use GCC built-in functions */
+#define _PR_HAVE_ATOMIC_OPS
+#define _MD_INIT_ATOMIC()
+#define _MD_ATOMIC_INCREMENT(ptr) __sync_add_and_fetch(ptr, 1)
+#define _MD_ATOMIC_DECREMENT(ptr) __sync_sub_and_fetch(ptr, 1)
+#define _MD_ATOMIC_ADD(ptr, i) __sync_add_and_fetch(ptr, i)
+#define _MD_ATOMIC_SET(ptr, nv) __sync_lock_test_and_set(ptr, nv)
+#endif
+#endif
+
+#if defined(__mips__) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)
+/* Use GCC built-in functions */
+#define _PR_HAVE_ATOMIC_OPS
+#define _MD_INIT_ATOMIC()
+#define _MD_ATOMIC_INCREMENT(ptr) __sync_add_and_fetch(ptr, 1)
+#define _MD_ATOMIC_DECREMENT(ptr) __sync_sub_and_fetch(ptr, 1)
+#define _MD_ATOMIC_ADD(ptr, i) __sync_add_and_fetch(ptr, i)
+#define _MD_ATOMIC_SET(ptr, nv) __sync_lock_test_and_set(ptr, nv)
+#endif
+
+#if defined(__alpha)
+#define _PR_HAVE_ATOMIC_OPS
+#define _MD_INIT_ATOMIC()
+#define _MD_ATOMIC_ADD(ptr, i) ({               \
+    PRInt32 __atomic_tmp, __atomic_ret;   \
+    __asm__ __volatile__(                       \
+    "1: ldl_l   %[ret], %[val]          \n"     \
+    "   addl    %[ret], %[inc], %[tmp]  \n"     \
+    "   addl    %[ret], %[inc], %[ret]  \n"     \
+    "   stl_c   %[tmp], %[val]          \n"     \
+    "   beq     %[tmp], 2f              \n"     \
+    ".subsection 2                      \n"     \
+    "2: br      1b                      \n"     \
+    ".previous"                                 \
+    : [ret] "=&r" (__atomic_ret),               \
+      [tmp] "=&r" (__atomic_tmp),               \
+      [val] "=m" (*ptr)                         \
+    : [inc] "Ir" (i), "m" (*ptr));              \
+    __atomic_ret;                               \
+})
+#define _MD_ATOMIC_INCREMENT(ptr) _MD_ATOMIC_ADD(ptr, 1)
+#define _MD_ATOMIC_DECREMENT(ptr) ({            \
+    PRInt32 __atomic_tmp, __atomic_ret;   \
+    __asm__ __volatile__(                       \
+    "1: ldl_l   %[ret], %[val]          \n"     \
+    "   subl    %[ret], 1, %[tmp]       \n"     \
+    "   subl    %[ret], 1, %[ret]       \n"     \
+    "   stl_c   %[tmp], %[val]          \n"     \
+    "   beq     %[tmp], 2f              \n"     \
+    ".subsection 2                      \n"     \
+    "2: br      1b                      \n"     \
+    ".previous"                                 \
+    : [ret] "=&r" (__atomic_ret),               \
+      [tmp] "=&r" (__atomic_tmp),               \
+      [val] "=m" (*ptr)                         \
+    : "m" (*ptr));                              \
+    __atomic_ret;                               \
+})
+#define _MD_ATOMIC_SET(ptr, n) ({               \
+    PRInt32 __atomic_tmp, __atomic_ret;   \
+    __asm__ __volatile__(                       \
+    "1: ldl_l   %[ret], %[val]          \n"     \
+    "   mov     %[newval], %[tmp]       \n"     \
+    "   stl_c   %[tmp], %[val]          \n"     \
+    "   beq     %[tmp], 2f              \n"     \
+    ".subsection 2                      \n"     \
+    "2: br      1b                      \n"     \
+    ".previous"                                 \
+    : [ret] "=&r" (__atomic_ret),               \
+      [tmp] "=&r"(__atomic_tmp),                \
+      [val] "=m" (*ptr)                         \
+    : [newval] "Ir" (n), "m" (*ptr));           \
+    __atomic_ret;                               \
+})
+#endif
+
+#if defined(__arm__) || defined(__aarch64__)
+#if defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)
+/* Use GCC built-in functions */
+#define _PR_HAVE_ATOMIC_OPS
+#define _MD_INIT_ATOMIC()
+
+#define _MD_ATOMIC_INCREMENT(ptr) __sync_add_and_fetch(ptr, 1)
+#define _MD_ATOMIC_DECREMENT(ptr) __sync_sub_and_fetch(ptr, 1)
+#define _MD_ATOMIC_SET(ptr, nv) __sync_lock_test_and_set(ptr, nv)
+#define _MD_ATOMIC_ADD(ptr, i) __sync_add_and_fetch(ptr, i)
+
+#elif defined(_PR_ARM_KUSER)
+#define _PR_HAVE_ATOMIC_OPS
+#define _MD_INIT_ATOMIC()
+
+/*
+ * The kernel provides this helper function at a fixed address with a fixed
+ * ABI signature, directly callable from user space.
+ *
+ * Definition:
+ * Atomically store newval in *ptr if *ptr is equal to oldval.
+ * Return zero if *ptr was changed or non-zero if no exchange happened.
+ */
+typedef int (__kernel_cmpxchg_t)(int oldval, int newval, volatile int *ptr);
+#define __kernel_cmpxchg (*(__kernel_cmpxchg_t *)0xffff0fc0)
+
+#define _MD_ATOMIC_INCREMENT(ptr) _MD_ATOMIC_ADD(ptr, 1)
+#define _MD_ATOMIC_DECREMENT(ptr) _MD_ATOMIC_ADD(ptr, -1)
+
+static inline PRInt32 _MD_ATOMIC_ADD(PRInt32 *ptr, PRInt32 n)
+{
+    PRInt32 ov, nv;
+    volatile PRInt32 *vp = ptr;
+
+    do {
+        ov = *vp;
+        nv = ov + n;
+    } while (__kernel_cmpxchg(ov, nv, vp));
+
+    return nv;
+}
+
+static inline PRInt32 _MD_ATOMIC_SET(PRInt32 *ptr, PRInt32 nv)
+{
+    PRInt32 ov;
+    volatile PRInt32 *vp = ptr;
+
+    do {
+        ov = *vp;
+    } while (__kernel_cmpxchg(ov, nv, vp));
+
+    return ov;
+}
+#endif
+#endif /* __arm__ */
+
+#define USE_SETJMP
+#if (defined(__GLIBC__) && __GLIBC__ >= 2) || defined(ANDROID)
+#define _PR_POLL_AVAILABLE
+#endif
+#undef _PR_USE_POLL
+#define _PR_STAT_HAS_ONLY_ST_ATIME
+#if defined(__alpha) || defined(__ia64__)
+#define _PR_HAVE_LARGE_OFF_T
+#elif (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) \
+    || defined(ANDROID)
+#define _PR_HAVE_OFF64_T
+#else
+#define _PR_NO_LARGE_FILES
+#endif
+#if (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) \
+    || defined(ANDROID)
+#define _PR_INET6
+#define _PR_HAVE_INET_NTOP
+#define _PR_HAVE_GETHOSTBYNAME2
+#define _PR_HAVE_GETADDRINFO
+#define _PR_INET6_PROBE
+#endif
+#ifndef ANDROID
+#define _PR_HAVE_SYSV_SEMAPHORES
+#define PR_HAVE_SYSV_NAMED_SHARED_MEMORY
+#endif
+/* Android has gethostbyname_r but not gethostbyaddr_r or gethostbyname2_r. */
+#if (__GLIBC__ >= 2) && defined(_PR_PTHREADS)
+#define _PR_HAVE_GETHOST_R
+#define _PR_HAVE_GETHOST_R_INT
+#endif
+
+#ifdef _PR_PTHREADS
+
+extern void _MD_CleanupBeforeExit(void);
+#define _MD_CLEANUP_BEFORE_EXIT _MD_CleanupBeforeExit
+
+#else  /* ! _PR_PTHREADS */
+
+#include <setjmp.h>
+
+#define PR_CONTEXT_TYPE	sigjmp_buf
+
+#define CONTEXT(_th) ((_th)->md.context)
+
+#ifdef __powerpc__
+/*
+ * PowerPC based MkLinux
+ *
+ * On the PowerPC, the new style jmp_buf isn't used until glibc
+ * 2.1.
+ */
+#if (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1)
+#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_GPR1]
+#else
+#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__misc[0]
+#endif /* glibc 2.1 or later */
+#define _MD_SET_FP(_t, val)
+#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
+#define _MD_GET_FP_PTR(_t) ((void *) 0)
+/* aix = 64, macos = 70 */
+#define PR_NUM_GCREGS  64
+
+#elif defined(__alpha)
+/* Alpha based Linux */
+
+#if defined(__GLIBC__) && __GLIBC__ >= 2
+#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_SP]
+#define _MD_SET_FP(_t, val)
+#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
+#define _MD_GET_FP_PTR(_t) ((void *) 0)
+#define _MD_SP_TYPE long int
+#else
+#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp
+#define _MD_SET_FP(_t, val)
+#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
+#define _MD_GET_FP_PTR(_t) ((void *) 0)
+#define _MD_SP_TYPE __ptr_t
+#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
+
+/* XXX not sure if this is correct, or maybe it should be 17? */
+#define PR_NUM_GCREGS 9
+
+#elif defined(__ia64__)
+
+#define _MD_GET_SP(_t)      ((long *)((_t)->md.context[0].__jmpbuf)[0])
+#define _MD_SET_FP(_t, val)
+#define _MD_GET_SP_PTR(_t)  &(_MD_GET_SP(_t))
+#define _MD_GET_FP_PTR(_t)  ((void *) 0)
+#define _MD_SP_TYPE         long int
+
+#define PR_NUM_GCREGS       _JBLEN
+
+#elif defined(__mc68000__)
+/* m68k based Linux */
+
+/*
+ * On the m68k, glibc still uses the old style sigjmp_buf, even
+ * in glibc 2.0.7.
+ */
+#if defined(__GLIBC__) && __GLIBC__ >= 2
+#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp
+#define _MD_SET_FP(_t, val)
+#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
+#define _MD_GET_FP_PTR(_t) ((void *) 0)
+#define _MD_SP_TYPE int
+#else
+#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp
+#define _MD_SET_FP(_t, val)
+#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
+#define _MD_GET_FP_PTR(_t) ((void *) 0)
+#define _MD_SP_TYPE __ptr_t
+#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
+
+/* XXX not sure if this is correct, or maybe it should be 17? */
+#define PR_NUM_GCREGS 9
+
+#elif defined(__sparc__)
+/* Sparc */
+#if defined(__GLIBC__) && __GLIBC__ >= 2
+/*
+ * You need glibc2-2.0.7-25 or later. The libraries that came with
+ * Red Hat 5.1 are not new enough, but they are in 5.2.
+ */
+#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_SP]
+#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[JB_FP] = val)
+#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
+#define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[JB_FP])
+#define _MD_SP_TYPE int
+#else
+#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__fp
+#define _MD_SET_FP(_t, val)
+#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
+#define _MD_GET_FP_PTR(_t) ((void *) 0)
+#define _MD_SP_TYPE __ptr_t
+#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
+
+#elif defined(__i386__)
+/* Intel based Linux */
+#if defined(__GLIBC__) && __GLIBC__ >= 2
+#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_SP]
+#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[JB_BP] = val)
+#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
+#define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[JB_BP])
+#define _MD_SP_TYPE int
+#else
+#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp
+#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[0].__bp = val)
+#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
+#define _MD_GET_FP_PTR(_t) &((_t)->md.context[0].__jmpbuf[0].__bp)
+#define _MD_SP_TYPE __ptr_t
+#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
+#define PR_NUM_GCREGS   6
+
+#elif defined(__mips__)
+/* Linux/MIPS */
+#if defined(__GLIBC__) && __GLIBC__ >= 2
+#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp
+#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[0].__fp = (val))
+#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
+#define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[0].__fp)
+#define _MD_SP_TYPE __ptr_t
+#else
+#error "Linux/MIPS pre-glibc2 not supported yet"
+#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
+
+#elif defined(__arm__)
+/* ARM/Linux */
+#if defined(__GLIBC__) && __GLIBC__ >= 2
+#ifdef __ARM_EABI__
+/* EABI */
+#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[8]
+#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[7] = (val))
+#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
+#define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[7])
+#define _MD_SP_TYPE __ptr_t
+#else /* __ARM_EABI__ */
+/* old ABI */
+#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[20]
+#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[19] = (val))
+#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
+#define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[19])
+#define _MD_SP_TYPE __ptr_t
+#endif /* __ARM_EABI__ */
+#else
+#error "ARM/Linux pre-glibc2 not supported yet"
+#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
+
+#elif defined(__sh__)
+/* SH/Linux */
+#if defined(__GLIBC__) && __GLIBC__ >= 2
+#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[7]
+#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[6] = (val))
+#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
+#define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[6])
+#define _MD_SP_TYPE __ptr_t
+#else
+#error "SH/Linux pre-glibc2 not supported yet"
+#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
+
+#elif defined(__m32r__)
+/* Linux/M32R */
+#if defined(__GLIBC__) && __GLIBC__ >= 2
+#define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__regs[JB_SP]
+#define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[0].__regs[JB_FP] = (val))
+#define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t))
+#define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[0].__regs[JB_FP])
+#define _MD_SP_TYPE __ptr_t
+#else
+#error "Linux/M32R pre-glibc2 not supported yet"
+#endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */
+
+#else
+
+#error "Unknown CPU architecture"
+
+#endif /*__powerpc__*/
+
+/*
+** Initialize a thread context to run "_main()" when started
+*/
+#ifdef __powerpc__
+
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)  \
+{  \
+    *status = PR_TRUE;  \
+    if (sigsetjmp(CONTEXT(_thread), 1)) {  \
+        _main();  \
+    }  \
+    _MD_GET_SP(_thread) = (unsigned char*) ((_sp) - 128); \
+    _thread->md.sp = _MD_GET_SP_PTR(_thread); \
+    _thread->md.fp = _MD_GET_FP_PTR(_thread); \
+    _MD_SET_FP(_thread, 0); \
+}
+
+#elif defined(__mips__)
+
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)  \
+{  \
+    *status = PR_TRUE;  \
+    (void) sigsetjmp(CONTEXT(_thread), 1);  \
+    _thread->md.context[0].__jmpbuf[0].__pc = (__ptr_t) _main;  \
+    _MD_GET_SP(_thread) = (_MD_SP_TYPE) ((_sp) - 64); \
+    _thread->md.sp = _MD_GET_SP_PTR(_thread); \
+    _thread->md.fp = _MD_GET_FP_PTR(_thread); \
+    _MD_SET_FP(_thread, 0); \
+}
+
+#else
+
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)  \
+{  \
+    *status = PR_TRUE;  \
+    if (sigsetjmp(CONTEXT(_thread), 1)) {  \
+        _main();  \
+    }  \
+    _MD_GET_SP(_thread) = (_MD_SP_TYPE) ((_sp) - 64); \
+    _thread->md.sp = _MD_GET_SP_PTR(_thread); \
+    _thread->md.fp = _MD_GET_FP_PTR(_thread); \
+    _MD_SET_FP(_thread, 0); \
+}
+
+#endif /*__powerpc__*/
+
+#define _MD_SWITCH_CONTEXT(_thread)  \
+    if (!sigsetjmp(CONTEXT(_thread), 1)) {  \
+	(_thread)->md.errcode = errno;  \
+	_PR_Schedule();  \
+    }
+
+/*
+** Restore a thread context, saved by _MD_SWITCH_CONTEXT
+*/
+#define _MD_RESTORE_CONTEXT(_thread) \
+{   \
+    errno = (_thread)->md.errcode;  \
+    _MD_SET_CURRENT_THREAD(_thread);  \
+    siglongjmp(CONTEXT(_thread), 1);  \
+}
+
+/* Machine-dependent (MD) data structures */
+
+struct _MDThread {
+    PR_CONTEXT_TYPE context;
+    void *sp;
+    void *fp;
+    int id;
+    int errcode;
+};
+
+struct _MDThreadStack {
+    PRInt8 notused;
+};
+
+struct _MDLock {
+    PRInt8 notused;
+};
+
+struct _MDSemaphore {
+    PRInt8 notused;
+};
+
+struct _MDCVar {
+    PRInt8 notused;
+};
+
+struct _MDSegment {
+    PRInt8 notused;
+};
+
+/*
+ * md-specific cpu structure field
+ */
+#include <sys/time.h>  /* for FD_SETSIZE */
+#define _PR_MD_MAX_OSFD FD_SETSIZE
+
+struct _MDCPU_Unix {
+    PRCList ioQ;
+    PRUint32 ioq_timeout;
+    PRInt32 ioq_max_osfd;
+    PRInt32 ioq_osfd_cnt;
+#ifndef _PR_USE_POLL
+    fd_set fd_read_set, fd_write_set, fd_exception_set;
+    PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
+            fd_exception_cnt[_PR_MD_MAX_OSFD];
+#else
+    struct pollfd *ioq_pollfds;
+    int ioq_pollfds_size;
+#endif	/* _PR_USE_POLL */
+};
+
+#define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
+#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
+#define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
+#define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
+#define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
+#define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
+#define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
+#define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
+#define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
+#define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
+#define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
+#define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
+#define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)
+
+#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32
+
+struct _MDCPU {
+    struct _MDCPU_Unix md_unix;
+};
+
+#define _MD_INIT_LOCKS()
+#define _MD_NEW_LOCK(lock) PR_SUCCESS
+#define _MD_FREE_LOCK(lock)
+#define _MD_LOCK(lock)
+#define _MD_UNLOCK(lock)
+#define _MD_INIT_IO()
+#define _MD_IOQ_LOCK()
+#define _MD_IOQ_UNLOCK()
+
+extern PRStatus _MD_InitializeThread(PRThread *thread);
+
+#define _MD_INIT_RUNNING_CPU(cpu)       _MD_unix_init_running_cpu(cpu)
+#define _MD_INIT_THREAD                 _MD_InitializeThread
+#define _MD_EXIT_THREAD(thread)
+#define _MD_SUSPEND_THREAD(thread)      _MD_suspend_thread
+#define _MD_RESUME_THREAD(thread)       _MD_resume_thread
+#define _MD_CLEAN_THREAD(_thread)
+
+extern PRStatus _MD_CREATE_THREAD(
+    PRThread *thread,
+    void (*start) (void *),
+    PRThreadPriority priority,
+    PRThreadScope scope,
+    PRThreadState state,
+    PRUint32 stackSize);
+extern void _MD_SET_PRIORITY(struct _MDThread *thread, PRUintn newPri);
+extern PRStatus _MD_WAIT(PRThread *, PRIntervalTime timeout);
+extern PRStatus _MD_WAKEUP_WAITER(PRThread *);
+extern void _MD_YIELD(void);
+
+#endif /* ! _PR_PTHREADS */
+
+extern void _MD_EarlyInit(void);
+
+#define _MD_EARLY_INIT                  _MD_EarlyInit
+#define _MD_FINAL_INIT                  _PR_UnixInit
+#define _PR_HAVE_CLOCK_MONOTONIC
+
+/*
+ * We wrapped the select() call.  _MD_SELECT refers to the built-in,
+ * unwrapped version.
+ */
+#define _MD_SELECT __select
+
+#ifdef _PR_POLL_AVAILABLE
+#include <sys/poll.h>
+extern int __syscall_poll(struct pollfd *ufds, unsigned long int nfds,
+	int timeout);
+#define _MD_POLL __syscall_poll
+#endif
+
+/* For writev() */
+#include <sys/uio.h>
+
+extern void _MD_linux_map_sendfile_error(int err);
+
+#endif /* nspr_linux_defs_h___ */
diff --git a/nsprpub/pr/include/md/_netbsd.cfg b/nsprpub/pr/include/md/_netbsd.cfg
new file mode 100644
index 0000000000..1326556e0a
--- /dev/null
+++ b/nsprpub/pr/include/md/_netbsd.cfg
@@ -0,0 +1,351 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_UNIX
+#define XP_UNIX
+#endif
+
+#ifndef NETBSD
+#define NETBSD
+#endif
+
+#define PR_AF_INET6 24  /* same as AF_INET6 */
+
+#ifndef HAVE_LONG_LONG
+#define HAVE_LONG_LONG
+#endif
+
+#if defined(__i386__) || defined(__arm32__) || defined(__ARMEL__) || \
+	defined(__MIPSEL__)
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#undef	HAVE_ALIGNED_DOUBLES
+#undef	HAVE_ALIGNED_LONGLONGS
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+
+#elif defined(__sparc_v9__)
+
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 1
+#define HAVE_ALIGNED_DOUBLES
+#define HAVE_ALIGNED_LONGLONGS
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+#define PR_BYTES_PER_WORD_LOG2   3
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8 
+#define PR_ALIGN_OF_FLOAT   4 
+#define PR_ALIGN_OF_DOUBLE  8 
+#define PR_ALIGN_OF_POINTER 8 
+
+#elif defined(__sparc__) || defined(__MIPSEB__) || defined(__ARMEB__)
+
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 1
+#define HAVE_ALIGNED_DOUBLES
+#define HAVE_ALIGNED_LONGLONGS
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 4
+
+#elif defined(__alpha__)
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#define	HAVE_ALIGNED_DOUBLES
+#define	HAVE_ALIGNED_LONGLONGS
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+
+#define PR_BYTES_PER_WORD_LOG2  3
+#define PR_BYTES_PER_DWORD_LOG2 3
+
+#elif defined(__amd64__)
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#define HAVE_ALIGNED_DOUBLES
+#define HAVE_ALIGNED_LONGLONGS
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+#define PR_ALIGN_OF_WORD    8
+
+#define PR_BYTES_PER_WORD_LOG2  3
+#define PR_BYTES_PER_DWORD_LOG2 3
+
+#elif defined(__powerpc__) || defined(__m68k__)
+
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN    1
+#undef	HAVE_ALIGNED_DOUBLES
+#undef	HAVE_ALIGNED_LONGLONGS
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#else
+
+#error Must define constants for type sizes here.
+
+#endif
+
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE		PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT 	PR_BYTES_PER_SHORT
+#define BYTES_PER_INT 		PR_BYTES_PER_INT
+#define BYTES_PER_INT64		PR_BYTES_PER_INT64
+#define BYTES_PER_LONG		PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT		PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE	PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD		PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD		PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE		PR_BITS_PER_BYTE
+#define BITS_PER_SHORT		PR_BITS_PER_SHORT
+#define BITS_PER_INT		PR_BITS_PER_INT
+#define BITS_PER_INT64		PR_BITS_PER_INT64
+#define BITS_PER_LONG		PR_BITS_PER_LONG
+#define BITS_PER_FLOAT		PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE		PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD		PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2	PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2	PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2	PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2	PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2	PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2	PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2 	PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2	PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT		PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT		PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG		PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64		PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT		PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE		PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER	PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD		PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2	PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2	PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2	PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_netbsd.h b/nsprpub/pr/include/md/_netbsd.h
new file mode 100644
index 0000000000..945d94ff4b
--- /dev/null
+++ b/nsprpub/pr/include/md/_netbsd.h
@@ -0,0 +1,230 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_netbsd_defs_h___
+#define nspr_netbsd_defs_h___
+
+#include <sys/syscall.h>
+#include <sys/param.h>  /* for __NetBSD_Version__ */
+
+#define PR_LINKER_ARCH	"netbsd"
+#define _PR_SI_SYSNAME  "NetBSD"
+#if defined(__i386__)
+#define _PR_SI_ARCHITECTURE "x86"
+#elif defined(__alpha__)
+#define _PR_SI_ARCHITECTURE "alpha"
+#elif defined(__amd64__)
+#define _PR_SI_ARCHITECTURE "amd64"
+#elif defined(__m68k__)
+#define _PR_SI_ARCHITECTURE "m68k"
+#elif defined(__powerpc__)
+#define _PR_SI_ARCHITECTURE "powerpc"
+#elif defined(__sparc_v9__)
+#define _PR_SI_ARCHITECTURE "sparc64"
+#elif defined(__sparc__)
+#define _PR_SI_ARCHITECTURE "sparc"
+#elif defined(__mips__)
+#define _PR_SI_ARCHITECTURE "mips"
+#elif defined(__arm32__) || defined(__arm__) || defined(__armel__) \
+    || defined(__armeb__)
+#define _PR_SI_ARCHITECTURE "arm"
+#endif
+
+#if defined(__ELF__)
+#define PR_DLL_SUFFIX		".so"
+#else
+#define PR_DLL_SUFFIX		".so.1.0"
+#endif
+
+#define _PR_VMBASE              0x30000000
+#define _PR_STACK_VMBASE	0x50000000
+#define _MD_DEFAULT_STACK_SIZE	65536L
+#define _MD_MMAP_FLAGS          MAP_PRIVATE
+
+#undef  HAVE_STACK_GROWING_UP
+#define HAVE_DLL
+#define USE_DLFCN
+#define _PR_HAVE_SOCKADDR_LEN
+#define _PR_NO_LARGE_FILES
+#define _PR_STAT_HAS_ST_ATIMESPEC
+#define _PR_POLL_AVAILABLE
+#define _PR_USE_POLL
+#define _PR_HAVE_SYSV_SEMAPHORES
+#define PR_HAVE_SYSV_NAMED_SHARED_MEMORY
+
+#if __NetBSD_Version__ >= 105000000
+#define _PR_INET6
+#define _PR_HAVE_INET_NTOP
+#define _PR_HAVE_GETHOSTBYNAME2
+#define _PR_HAVE_GETADDRINFO
+#define _PR_INET6_PROBE
+#endif
+
+#define USE_SETJMP
+
+#ifndef _PR_PTHREADS
+#include <setjmp.h>
+
+#define PR_CONTEXT_TYPE	sigjmp_buf
+
+#define CONTEXT(_th) ((_th)->md.context)
+
+#if defined(__i386__) || defined(__sparc__) || defined(__m68k__) || defined(__powerpc__)
+#define JB_SP_INDEX 2
+#elif defined(__mips__)
+#define JB_SP_INDEX 4
+#elif defined(__alpha__)
+#define JB_SP_INDEX 34
+#elif defined(__arm32__)
+/*
+ * On the arm32, the jmpbuf regs underwent a name change after NetBSD 1.3.
+ */
+#ifdef JMPBUF_REG_R13
+#define JB_SP_INDEX JMPBUF_REG_R13
+#else
+#define JB_SP_INDEX _JB_REG_R13
+#endif
+#else
+#error "Need to define SP index in jmp_buf here"
+#endif
+#define _MD_GET_SP(_th)    (_th)->md.context[JB_SP_INDEX]
+
+#define PR_NUM_GCREGS	_JBLEN
+
+/*
+** Initialize a thread context to run "_main()" when started
+*/
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)  \
+{  \
+    *status = PR_TRUE;  \
+    if (sigsetjmp(CONTEXT(_thread), 1)) {  \
+        _main();  \
+    }  \
+    _MD_GET_SP(_thread) = (unsigned char*) ((_sp) - 64); \
+}
+
+#define _MD_SWITCH_CONTEXT(_thread)  \
+    if (!sigsetjmp(CONTEXT(_thread), 1)) {  \
+        (_thread)->md.errcode = errno;  \
+        _PR_Schedule();  \
+    }
+
+/*
+** Restore a thread context, saved by _MD_SWITCH_CONTEXT
+*/
+#define _MD_RESTORE_CONTEXT(_thread) \
+{   \
+    errno = (_thread)->md.errcode;  \
+    _MD_SET_CURRENT_THREAD(_thread);  \
+    siglongjmp(CONTEXT(_thread), 1);  \
+}
+
+/* Machine-dependent (MD) data structures */
+
+struct _MDThread {
+    PR_CONTEXT_TYPE context;
+    int id;
+    int errcode;
+};
+
+struct _MDThreadStack {
+    PRInt8 notused;
+};
+
+struct _MDLock {
+    PRInt8 notused;
+};
+
+struct _MDSemaphore {
+    PRInt8 notused;
+};
+
+struct _MDCVar {
+    PRInt8 notused;
+};
+
+struct _MDSegment {
+    PRInt8 notused;
+};
+
+/*
+ * md-specific cpu structure field
+ */
+#define _PR_MD_MAX_OSFD FD_SETSIZE
+
+struct _MDCPU_Unix {
+    PRCList ioQ;
+    PRUint32 ioq_timeout;
+    PRInt32 ioq_max_osfd;
+    PRInt32 ioq_osfd_cnt;
+#ifndef _PR_USE_POLL
+    fd_set fd_read_set, fd_write_set, fd_exception_set;
+    PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
+				fd_exception_cnt[_PR_MD_MAX_OSFD];
+#else
+	struct pollfd *ioq_pollfds;
+	int ioq_pollfds_size;
+#endif	/* _PR_USE_POLL */
+};
+
+#define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
+#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
+#define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
+#define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
+#define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
+#define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
+#define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
+#define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
+#define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
+#define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
+#define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
+#define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
+#define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)
+
+#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32
+
+struct _MDCPU {
+    struct _MDCPU_Unix md_unix;
+};
+
+#define _MD_INIT_LOCKS()
+#define _MD_NEW_LOCK(lock) PR_SUCCESS
+#define _MD_FREE_LOCK(lock)
+#define _MD_LOCK(lock)
+#define _MD_UNLOCK(lock)
+#define _MD_INIT_IO()
+#define _MD_IOQ_LOCK()
+#define _MD_IOQ_UNLOCK()
+
+#define _MD_INIT_RUNNING_CPU(cpu)       _MD_unix_init_running_cpu(cpu)
+#define _MD_INIT_THREAD                 _MD_InitializeThread
+#define _MD_EXIT_THREAD(thread)
+#define _MD_SUSPEND_THREAD(thread)      _MD_suspend_thread
+#define _MD_RESUME_THREAD(thread)       _MD_resume_thread
+#define _MD_CLEAN_THREAD(_thread)
+
+#endif /* ! _PR_PTHREADS */
+
+extern void _MD_EarlyInit(void);
+
+#define _MD_EARLY_INIT                  _MD_EarlyInit
+#define _MD_FINAL_INIT			_PR_UnixInit
+#define _PR_HAVE_CLOCK_MONOTONIC
+
+/*
+ * We wrapped the select() call.  _MD_SELECT refers to the built-in,
+ * unwrapped version.
+ */
+#define _MD_SELECT(nfds,r,w,e,tv) syscall(SYS_select,nfds,r,w,e,tv)
+#if defined(_PR_POLL_AVAILABLE)
+#include <poll.h>
+#define _MD_POLL(fds,nfds,timeout) syscall(SYS_poll,fds,nfds,timeout)
+#endif
+
+#if NetBSD1_3 == 1L
+typedef unsigned int nfds_t;
+#endif
+
+#endif /* nspr_netbsd_defs_h___ */
diff --git a/nsprpub/pr/include/md/_nspr_pthread.h b/nsprpub/pr/include/md/_nspr_pthread.h
new file mode 100644
index 0000000000..7af442cc85
--- /dev/null
+++ b/nsprpub/pr/include/md/_nspr_pthread.h
@@ -0,0 +1,251 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_pthread_defs_h___
+#define nspr_pthread_defs_h___
+
+#include <pthread.h>
+#include "prthread.h"
+
+#if defined(PTHREADS_USER)
+/*
+** Thread Local Storage 
+*/
+extern pthread_key_t current_thread_key;
+extern pthread_key_t current_cpu_key;
+extern pthread_key_t last_thread_key;
+extern pthread_key_t intsoff_key;
+
+#define _MD_CURRENT_THREAD() 			\
+			((struct PRThread *) pthread_getspecific(current_thread_key))
+#define _MD_CURRENT_CPU() 				\
+			((struct _PRCPU *) pthread_getspecific(current_cpu_key))
+#define _MD_LAST_THREAD()				\
+			((struct PRThread *) pthread_getspecific(last_thread_key))
+	
+#define _MD_SET_CURRENT_THREAD(newval) 			\
+	pthread_setspecific(current_thread_key, (void *)newval)
+
+#define _MD_SET_CURRENT_CPU(newval) 			\
+	pthread_setspecific(current_cpu_key, (void *)newval)
+
+#define _MD_SET_LAST_THREAD(newval)	 			\
+	pthread_setspecific(last_thread_key, (void *)newval)
+
+#define _MD_SET_INTSOFF(_val)
+#define _MD_GET_INTSOFF()	1
+	
+/*
+** Initialize the thread context preparing it to execute _main.
+*/
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)			\
+    PR_BEGIN_MACRO				      							\
+        *status = PR_TRUE;              						\
+		if (SAVE_CONTEXT(_thread)) {							\
+	    	(*_main)();											\
+		}														\
+		_MD_SET_THR_SP(_thread, _sp);							\
+		_thread->no_sched = 0; 									\
+    PR_END_MACRO
+
+#define _MD_SWITCH_CONTEXT(_thread)  								\
+    PR_BEGIN_MACRO 													\
+	PR_ASSERT(_thread->no_sched);									\
+	if (!SAVE_CONTEXT(_thread)) {									\
+		(_thread)->md.errcode = errno;  							\
+		_MD_SET_LAST_THREAD(_thread);								\
+		_PR_Schedule();		     									\
+    } else {														\
+		 (_MD_LAST_THREAD())->no_sched = 0;							\
+	}																\
+    PR_END_MACRO
+
+/*
+** Restore a thread context, saved by _MD_SWITCH_CONTEXT
+*/
+#define _MD_RESTORE_CONTEXT(_thread)								\
+    PR_BEGIN_MACRO 													\
+    errno = (_thread)->md.errcode; 									\
+    _MD_SET_CURRENT_THREAD(_thread); 								\
+	_thread->no_sched = 1;											\
+    GOTO_CONTEXT(_thread); 											\
+    PR_END_MACRO
+
+
+/* Machine-dependent (MD) data structures */
+
+struct _MDThread {
+    jmp_buf 		jb;
+    int				id;
+    int				errcode;
+	pthread_t		pthread;
+	pthread_mutex_t	pthread_mutex;
+	pthread_cond_t	pthread_cond;
+	int				wait;
+};
+
+struct _MDThreadStack {
+    PRInt8 notused;
+};
+
+struct _MDLock {
+	pthread_mutex_t mutex;
+};
+
+struct _MDSemaphore {
+    PRInt8 notused;
+};
+
+struct _MDCVar {
+	pthread_mutex_t mutex;
+};
+
+struct _MDSegment {
+    PRInt8 notused;
+};
+
+/*
+ * md-specific cpu structure field
+ */
+#define _PR_MD_MAX_OSFD FD_SETSIZE
+
+struct _MDCPU_Unix {
+    PRCList ioQ;
+    PRUint32 ioq_timeout;
+    PRInt32 ioq_max_osfd;
+    PRInt32 ioq_osfd_cnt;
+#ifndef _PR_USE_POLL
+    fd_set fd_read_set, fd_write_set, fd_exception_set;
+    PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
+				fd_exception_cnt[_PR_MD_MAX_OSFD];
+#else
+	struct pollfd *ioq_pollfds;
+	int ioq_pollfds_size;
+#endif	/* _PR_USE_POLL */
+};
+
+#define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
+#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
+#define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
+#define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
+#define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
+#define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
+#define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
+#define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
+#define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
+#define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
+#define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
+#define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
+#define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)
+
+#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32
+
+struct _MDCPU {
+    jmp_buf 			jb;
+	pthread_t 			pthread;
+	struct _MDCPU_Unix 	md_unix;
+};
+
+/*
+#define _MD_NEW_LOCK(lock) PR_SUCCESS
+#define _MD_FREE_LOCK(lock)
+#define _MD_LOCK(lock)
+#define _MD_UNLOCK(lock)
+*/
+
+extern pthread_mutex_t _pr_heapLock;
+
+#define _PR_LOCK(lock) pthread_mutex_lock(lock)
+
+#define _PR_UNLOCK(lock) pthread_mutex_unlock(lock)
+
+
+#define _PR_LOCK_HEAP()	{									\
+				if (_pr_primordialCPU) {					\
+					_PR_LOCK(_pr_heapLock);					\
+				}
+
+#define _PR_UNLOCK_HEAP() 	if (_pr_primordialCPU)	{		\
+					_PR_UNLOCK(_pr_heapLock);				\
+				}											\
+			  }
+
+NSPR_API(PRStatus) _MD_NEW_LOCK(struct _MDLock *md);
+NSPR_API(void) _MD_FREE_LOCK(struct _MDLock *lockp);
+
+#define _MD_LOCK(_lockp) _PR_LOCK(&(_lockp)->mutex)
+#define _MD_UNLOCK(_lockp) _PR_UNLOCK(&(_lockp)->mutex)
+
+#define _MD_INIT_IO()
+#define _MD_IOQ_LOCK()
+#define _MD_IOQ_UNLOCK()
+#define _MD_CHECK_FOR_EXIT()
+
+NSPR_API(PRStatus) _MD_InitThread(struct PRThread *thread);
+#define _MD_INIT_THREAD _MD_InitThread
+#define _MD_INIT_ATTACHED_THREAD _MD_InitThread
+
+NSPR_API(void) _MD_ExitThread(struct PRThread *thread);
+#define _MD_EXIT_THREAD _MD_ExitThread
+
+NSPR_API(void) _MD_SuspendThread(struct PRThread *thread);
+#define _MD_SUSPEND_THREAD _MD_SuspendThread
+
+NSPR_API(void) _MD_ResumeThread(struct PRThread *thread);
+#define _MD_RESUME_THREAD _MD_ResumeThread
+
+NSPR_API(void) _MD_SuspendCPU(struct _PRCPU *thread);
+#define _MD_SUSPEND_CPU _MD_SuspendCPU
+
+NSPR_API(void) _MD_ResumeCPU(struct _PRCPU *thread);
+#define _MD_RESUME_CPU _MD_ResumeCPU
+
+#define _MD_BEGIN_SUSPEND_ALL()
+#define _MD_END_SUSPEND_ALL()
+#define _MD_BEGIN_RESUME_ALL()
+#define _MD_END_RESUME_ALL()
+
+NSPR_API(void) _MD_EarlyInit(void);
+#define _MD_EARLY_INIT _MD_EarlyInit
+
+#define _MD_FINAL_INIT _PR_UnixInit
+
+NSPR_API(void) _MD_InitLocks(void);
+#define _MD_INIT_LOCKS _MD_InitLocks
+
+NSPR_API(void) _MD_CleanThread(struct PRThread *thread);
+#define _MD_CLEAN_THREAD _MD_CleanThread
+
+NSPR_API(PRStatus) _MD_CreateThread(
+                        struct PRThread *thread,
+                        void (*start) (void *),
+                        PRThreadPriority priority,
+                        PRThreadScope scope,
+                        PRThreadState state,
+                        PRUint32 stackSize);
+#define _MD_CREATE_THREAD _MD_CreateThread
+
+extern void _MD_CleanupBeforeExit(void);
+#define _MD_CLEANUP_BEFORE_EXIT _MD_CleanupBeforeExit
+
+NSPR_API(void) _MD_InitRunningCPU(struct _PRCPU *cpu);
+#define    _MD_INIT_RUNNING_CPU _MD_InitRunningCPU
+
+/* The _PR_MD_WAIT_LOCK and _PR_MD_WAKEUP_WAITER functions put to sleep and
+ * awaken a thread which is waiting on a lock or cvar.
+ */
+NSPR_API(PRStatus) _MD_wait(struct PRThread *, PRIntervalTime timeout);
+#define _MD_WAIT _MD_wait
+
+NSPR_API(PRStatus) _MD_WakeupWaiter(struct PRThread *);
+#define _MD_WAKEUP_WAITER _MD_WakeupWaiter
+
+NSPR_API(void) _MD_SetPriority(struct _MDThread *thread,
+	PRThreadPriority newPri);
+#define _MD_SET_PRIORITY _MD_SetPriority
+
+#endif /* PTHREADS_USER */
+
+#endif /* nspr_pthread_defs_h___ */
diff --git a/nsprpub/pr/include/md/_nto.cfg b/nsprpub/pr/include/md/_nto.cfg
new file mode 100644
index 0000000000..b76a56057e
--- /dev/null
+++ b/nsprpub/pr/include/md/_nto.cfg
@@ -0,0 +1,120 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_UNIX
+#define XP_UNIX
+#endif
+
+#ifndef NTO
+#define NTO
+#endif
+
+#define PR_AF_INET6 24  /* same as AF_INET6 */
+
+#ifdef __i386__
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+
+#define PR_BYTES_PER_BYTE   1L
+#define PR_BYTES_PER_SHORT  2L
+#define PR_BYTES_PER_INT    4L
+#define PR_BYTES_PER_INT64  8L
+#define PR_BYTES_PER_LONG   4L
+#define PR_BYTES_PER_FLOAT  4L
+#define PR_BYTES_PER_DOUBLE 8L
+#define PR_BYTES_PER_WORD   4L
+#define PR_BYTES_PER_DWORD  8L
+
+#define PR_BITS_PER_BYTE    8L
+#define PR_BITS_PER_SHORT   16L
+#define PR_BITS_PER_INT     32L
+#define PR_BITS_PER_INT64   64L
+#define PR_BITS_PER_LONG    32L
+#define PR_BITS_PER_FLOAT   32L
+#define PR_BITS_PER_DOUBLE  64L
+#define PR_BITS_PER_WORD    32L
+
+#define PR_BITS_PER_BYTE_LOG2   3L
+#define PR_BITS_PER_SHORT_LOG2  4L
+#define PR_BITS_PER_INT_LOG2    5L
+#define PR_BITS_PER_INT64_LOG2  6L
+#define PR_BITS_PER_LONG_LOG2   5L
+#define PR_BITS_PER_FLOAT_LOG2  5L
+#define PR_BITS_PER_DOUBLE_LOG2 6L
+#define PR_BITS_PER_WORD_LOG2   5L
+
+#define PR_ALIGN_OF_SHORT   2L
+#define PR_ALIGN_OF_INT     4L
+#define PR_ALIGN_OF_LONG    4L
+#define PR_ALIGN_OF_INT64   4L
+#define PR_ALIGN_OF_FLOAT   4L
+#define PR_ALIGN_OF_DOUBLE  4L
+#define PR_ALIGN_OF_POINTER 4L
+#define PR_ALIGN_OF_WORD    4L
+
+#define PR_BYTES_PER_WORD_LOG2   2L
+#define PR_BYTES_PER_DWORD_LOG2  3L
+#define PR_WORDS_PER_DWORD_LOG2  1L
+
+#else
+
+#error Undefined CPU Architecture
+
+#endif
+
+#ifndef HAVE_LONG_LONG
+#define HAVE_LONG_LONG
+#endif
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE		PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT 	PR_BYTES_PER_SHORT
+#define BYTES_PER_INT 		PR_BYTES_PER_INT
+#define BYTES_PER_INT64		PR_BYTES_PER_INT64
+#define BYTES_PER_LONG		PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT		PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE	PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD		PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD		PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE		PR_BITS_PER_BYTE
+#define BITS_PER_SHORT		PR_BITS_PER_SHORT
+#define BITS_PER_INT		PR_BITS_PER_INT
+#define BITS_PER_INT64		PR_BITS_PER_INT64
+#define BITS_PER_LONG		PR_BITS_PER_LONG
+#define BITS_PER_FLOAT		PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE		PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD		PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2	PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2	PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2	PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2	PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2	PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2	PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2 	PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2	PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT		PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT		PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG		PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64		PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT		PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE		PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER	PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD		PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2	PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2	PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2	PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_nto.h b/nsprpub/pr/include/md/_nto.h
new file mode 100644
index 0000000000..95309756bd
--- /dev/null
+++ b/nsprpub/pr/include/md/_nto.h
@@ -0,0 +1,188 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_nto_defs_h___
+#define nspr_nto_defs_h___
+
+/*
+** Internal configuration macros
+*/
+#define PR_LINKER_ARCH		"nto"
+#define _PR_SI_SYSNAME		"NTO"
+#define _PR_SI_ARCHITECTURE	"x86"
+#define PR_DLL_SUFFIX		".so"
+
+#define _PR_VMBASE		0x30000000
+#define _PR_STACK_VMBASE	0x50000000
+#define _MD_DEFAULT_STACK_SIZE	65536L
+#define _MD_MINIMUM_STACK_SIZE	131072L
+#define _MD_MMAP_FLAGS		MAP_PRIVATE
+
+#ifndef	HAVE_WEAK_IO_SYMBOLS
+#define	HAVE_WEAK_IO_SYMBOLS
+#endif
+
+#undef  _PR_POLL_AVAILABLE
+#undef  _PR_USE_POLL
+#define _PR_HAVE_SOCKADDR_LEN
+#undef  HAVE_BSD_FLOCK
+#define HAVE_FCNTL_FILE_LOCKING
+#define _PR_NO_LARGE_FILES
+#define _PR_STAT_HAS_ONLY_ST_ATIME
+#define PR_HAVE_POSIX_NAMED_SHARED_MEMORY
+#define _PR_HAVE_POSIX_SEMAPHORES
+
+#undef FD_SETSIZE
+#define FD_SETSIZE	4096
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/select.h>
+
+#undef  HAVE_STACK_GROWING_UP
+#define	HAVE_DLL
+#define	USE_DLFCN
+#define NEED_STRFTIME_LOCK
+#define NEED_TIME_R
+#define _PR_NEED_STRCASECMP
+
+#ifndef HAVE_STRERROR
+#define HAVE_STRERROR
+#endif
+
+#define USE_SETJMP
+
+#include <setjmp.h>
+
+#define _SETJMP			setjmp
+#define _LONGJMP		longjmp
+#define _PR_CONTEXT_TYPE	jmp_buf
+#define _PR_NUM_GCREGS		_JBLEN
+#define _MD_GET_SP(_t)		(_t)->md.context[7]
+
+#define CONTEXT(_th)		((_th)->md.context)
+
+
+/*
+** Initialize the thread context preparing it to execute _main.
+*/
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)	\
+{							\
+    *status = PR_TRUE;					\
+    if(_SETJMP(CONTEXT(_thread))) (*_main)();		\
+    _MD_GET_SP(_thread) = (int) ((_sp) - 128);		\
+}
+
+#define _MD_SWITCH_CONTEXT(_thread)	\
+    if (!_SETJMP(CONTEXT(_thread))) {	\
+	(_thread)->md.errcode = errno;	\
+	_PR_Schedule();			\
+    }
+
+/*
+** Restore a thread context, saved by _MD_SWITCH_CONTEXT
+*/
+#define _MD_RESTORE_CONTEXT(_thread)	\
+{					\
+    errno = (_thread)->md.errcode;	\
+    _MD_SET_CURRENT_THREAD(_thread);	\
+    _LONGJMP(CONTEXT(_thread), 1);	\
+}
+
+/*
+** Machine-dependent (MD) data structures.
+*/
+struct _MDThread {
+    _PR_CONTEXT_TYPE context;
+    int id;
+    int errcode;
+};
+
+struct _MDThreadStack {
+    PRInt8 notused;
+};
+
+struct _MDLock {
+    PRInt8 notused;
+};
+
+struct _MDSemaphore {
+    PRInt8 notused;
+};
+
+struct _MDCVar {
+    PRInt8 notused;
+};
+
+struct _MDSegment {
+    PRInt8 notused;
+};
+
+/*
+** md-specific cpu structure field
+*/
+#define _PR_MD_MAX_OSFD		FD_SETSIZE
+
+struct _MDCPU_Unix {
+    PRCList ioQ;
+    PRUint32 ioq_timeout;
+    PRInt32 ioq_max_osfd;
+    PRInt32 ioq_osfd_cnt;
+#ifndef _PR_USE_POLL
+    fd_set fd_read_set, fd_write_set, fd_exception_set;
+    PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD], fd_write_cnt[_PR_MD_MAX_OSFD], fd_exception_cnt[_PR_MD_MAX_OSFD];
+#else
+    struct pollfd *ioq_pollfds;
+    int ioq_pollfds_size;
+#endif
+};
+
+#define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
+#define _PR_ADD_TO_IOQ(_pq, _cpu)	PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
+#define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
+#define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
+#define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
+#define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
+#define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
+#define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
+#define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
+#define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
+#define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
+#define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
+#define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)
+
+#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32
+
+struct _MDCPU {
+	struct _MDCPU_Unix md_unix;
+};
+
+#define _MD_INIT_LOCKS()
+#define _MD_NEW_LOCK(lock)		PR_SUCCESS
+#define _MD_FREE_LOCK(lock)
+#define _MD_LOCK(lock)
+#define _MD_UNLOCK(lock)
+#define _MD_INIT_IO()
+#define _MD_IOQ_LOCK()
+#define _MD_IOQ_UNLOCK()
+
+#define _MD_INTERVAL_USE_GTOD
+#define _MD_EARLY_INIT			_MD_EarlyInit
+#define _MD_FINAL_INIT			_PR_UnixInit
+#define _MD_INIT_RUNNING_CPU(cpu)	_MD_unix_init_running_cpu(cpu)
+#define _MD_INIT_THREAD			_MD_InitializeThread
+#define _MD_EXIT_THREAD(thread)
+#define	_MD_SUSPEND_THREAD(thread)
+#define	_MD_RESUME_THREAD(thread)
+#define _MD_CLEAN_THREAD(_thread)
+
+/*
+** We wrapped the select() call.  _MD_SELECT refers to the built-in,
+** unwrapped version.
+*/
+#define _MD_SELECT		select
+
+#define SA_RESTART 0
+
+#endif /* nspr_nto_defs_h___ */
diff --git a/nsprpub/pr/include/md/_openbsd.cfg b/nsprpub/pr/include/md/_openbsd.cfg
new file mode 100644
index 0000000000..b68d6e9cd6
--- /dev/null
+++ b/nsprpub/pr/include/md/_openbsd.cfg
@@ -0,0 +1,353 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_UNIX
+#define XP_UNIX
+#endif
+
+#ifndef OPENBSD
+#define OPENBSD
+#endif
+
+#define PR_AF_INET6 24  /* same as AF_INET6 */
+
+#ifndef HAVE_LONG_LONG
+#define HAVE_LONG_LONG
+#endif
+
+#if defined(__i386__) || defined(__arm__)
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#undef	HAVE_ALIGNED_DOUBLES
+#undef	HAVE_ALIGNED_LONGLONGS
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+
+#elif defined(__amd64__)
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+#define PR_ALIGN_OF_WORD    8
+
+#define PR_BYTES_PER_WORD_LOG2  3
+#define PR_BYTES_PER_DWORD_LOG2 3
+
+#define HAVE_ALIGNED_DOUBLES
+#define HAVE_ALIGNED_LONGLONGS
+
+#elif defined(__sparc_v9__)
+
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 1
+#define HAVE_ALIGNED_DOUBLES
+#define HAVE_ALIGNED_LONGLONGS
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+
+#define PR_BYTES_PER_WORD_LOG2  3
+#define PR_BYTES_PER_DWORD_LOG2 3
+
+#elif defined(__sparc__)
+
+#undef IS_LITTLE_ENDIAN
+#define  IS_BIG_ENDIAN 1
+#define  HAVE_ALIGNED_DOUBLES
+#define  HAVE_ALIGNED_LONGLONGS
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 4
+
+#elif defined(__alpha__)
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#define	HAVE_ALIGNED_DOUBLES
+#define	HAVE_ALIGNED_LONGLONGS
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+
+#define PR_BYTES_PER_WORD_LOG2  3
+#define PR_BYTES_PER_DWORD_LOG2 3
+
+#elif defined(__powerpc__) || defined(__m68k__)
+
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN    1
+#undef	HAVE_ALIGNED_DOUBLES
+#undef	HAVE_ALIGNED_LONGLONGS
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#else
+
+#error Must define constants for type sizes here.
+
+#endif
+
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE		PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT 	PR_BYTES_PER_SHORT
+#define BYTES_PER_INT 		PR_BYTES_PER_INT
+#define BYTES_PER_INT64		PR_BYTES_PER_INT64
+#define BYTES_PER_LONG		PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT		PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE	PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD		PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD		PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE		PR_BITS_PER_BYTE
+#define BITS_PER_SHORT		PR_BITS_PER_SHORT
+#define BITS_PER_INT		PR_BITS_PER_INT
+#define BITS_PER_INT64		PR_BITS_PER_INT64
+#define BITS_PER_LONG		PR_BITS_PER_LONG
+#define BITS_PER_FLOAT		PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE		PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD		PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2	PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2	PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2	PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2	PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2	PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2	PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2 	PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2	PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT		PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT		PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG		PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64		PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT		PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE		PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER	PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD		PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2	PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2	PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2	PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_openbsd.h b/nsprpub/pr/include/md/_openbsd.h
new file mode 100644
index 0000000000..666c177e34
--- /dev/null
+++ b/nsprpub/pr/include/md/_openbsd.h
@@ -0,0 +1,209 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_openbsd_defs_h___
+#define nspr_openbsd_defs_h___
+
+#include <sys/syscall.h>
+
+#define PR_LINKER_ARCH	"openbsd"
+#define _PR_SI_SYSNAME  "OPENBSD"
+#if defined(__i386__)
+#define _PR_SI_ARCHITECTURE "x86"
+#elif defined(__alpha__)
+#define _PR_SI_ARCHITECTURE "alpha"
+#elif defined(__amd64__)
+#define _PR_SI_ARCHITECTURE "amd64"
+#elif defined(__m68k__)
+#define _PR_SI_ARCHITECTURE "m68k"
+#elif defined(__powerpc__)
+#define _PR_SI_ARCHITECTURE "powerpc"
+#elif defined(__sparc__)
+#define _PR_SI_ARCHITECTURE "sparc"
+#elif defined(__arm__)
+#define _PR_SI_ARCHITECTURE "arm"
+#endif
+
+#define PR_DLL_SUFFIX		".so"
+
+#define _PR_VMBASE              0x30000000
+#define _PR_STACK_VMBASE	0x50000000
+#define _MD_DEFAULT_STACK_SIZE	65536L
+#define _MD_MMAP_FLAGS          MAP_PRIVATE
+
+#undef  HAVE_STACK_GROWING_UP
+#define HAVE_DLL
+#define USE_DLFCN
+#define _PR_HAVE_SOCKADDR_LEN
+#define _PR_HAVE_LARGE_OFF_T
+#define _PR_STAT_HAS_ST_ATIMESPEC
+#define _PR_POLL_AVAILABLE
+#define _PR_USE_POLL
+#define _PR_HAVE_SYSV_SEMAPHORES
+#define PR_HAVE_SYSV_NAMED_SHARED_MEMORY
+
+#define _PR_INET6
+#define _PR_HAVE_INET_NTOP
+#define _PR_HAVE_GETHOSTBYNAME2
+#define _PR_HAVE_GETADDRINFO
+#define _PR_INET6_PROBE
+
+#define USE_SETJMP
+
+#ifndef _PR_PTHREADS
+#include <setjmp.h>
+
+#define PR_CONTEXT_TYPE	sigjmp_buf
+
+#define CONTEXT(_th) ((_th)->md.context)
+
+#if defined(__i386__) || defined(__sparc__) || defined(__m68k__)
+#define JB_SP_INDEX 2
+#elif defined(__powerpc__)
+#define JB_SP_INDEX 1
+#elif defined(__alpha__)
+#define JB_SP_INDEX 34
+#elif defined(__amd64__)
+#define JB_SP_INDEX 6
+#elif defined(__arm__)
+#define JB_SP_INDEX 23
+#else
+#error "Need to define SP index in jmp_buf here"
+#endif
+#define _MD_GET_SP(_th)    (_th)->md.context[JB_SP_INDEX]
+
+#define PR_NUM_GCREGS	_JBLEN
+
+/*
+** Initialize a thread context to run "_main()" when started
+*/
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)  \
+{  \
+    *status = PR_TRUE;  \
+    if (sigsetjmp(CONTEXT(_thread), 1)) {  \
+        _main();  \
+    }  \
+    _MD_GET_SP(_thread) = (unsigned char*) ((_sp) - 64); \
+}
+
+#define _MD_SWITCH_CONTEXT(_thread)  \
+    if (!sigsetjmp(CONTEXT(_thread), 1)) {  \
+        (_thread)->md.errcode = errno;  \
+        _PR_Schedule();  \
+    }
+
+/*
+** Restore a thread context, saved by _MD_SWITCH_CONTEXT
+*/
+#define _MD_RESTORE_CONTEXT(_thread) \
+{   \
+    errno = (_thread)->md.errcode;  \
+    _MD_SET_CURRENT_THREAD(_thread);  \
+    siglongjmp(CONTEXT(_thread), 1);  \
+}
+
+/* Machine-dependent (MD) data structures */
+
+struct _MDThread {
+    PR_CONTEXT_TYPE context;
+    int id;
+    int errcode;
+};
+
+struct _MDThreadStack {
+    PRInt8 notused;
+};
+
+struct _MDLock {
+    PRInt8 notused;
+};
+
+struct _MDSemaphore {
+    PRInt8 notused;
+};
+
+struct _MDCVar {
+    PRInt8 notused;
+};
+
+struct _MDSegment {
+    PRInt8 notused;
+};
+
+/*
+ * md-specific cpu structure field
+ */
+#define _PR_MD_MAX_OSFD FD_SETSIZE
+
+struct _MDCPU_Unix {
+    PRCList ioQ;
+    PRUint32 ioq_timeout;
+    PRInt32 ioq_max_osfd;
+    PRInt32 ioq_osfd_cnt;
+#ifndef _PR_USE_POLL
+    fd_set fd_read_set, fd_write_set, fd_exception_set;
+    PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
+				fd_exception_cnt[_PR_MD_MAX_OSFD];
+#else
+	struct pollfd *ioq_pollfds;
+	int ioq_pollfds_size;
+#endif	/* _PR_USE_POLL */
+};
+
+#define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
+#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
+#define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
+#define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
+#define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
+#define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
+#define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
+#define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
+#define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
+#define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
+#define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
+#define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
+#define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)
+
+#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32
+
+struct _MDCPU {
+    struct _MDCPU_Unix md_unix;
+};
+
+#define _MD_INIT_LOCKS()
+#define _MD_NEW_LOCK(lock) PR_SUCCESS
+#define _MD_FREE_LOCK(lock)
+#define _MD_LOCK(lock)
+#define _MD_UNLOCK(lock)
+#define _MD_INIT_IO()
+#define _MD_IOQ_LOCK()
+#define _MD_IOQ_UNLOCK()
+
+#define _MD_INIT_RUNNING_CPU(cpu)       _MD_unix_init_running_cpu(cpu)
+#define _MD_INIT_THREAD                 _MD_InitializeThread
+#define _MD_EXIT_THREAD(thread)
+#define _MD_SUSPEND_THREAD(thread)      _MD_suspend_thread
+#define _MD_RESUME_THREAD(thread)       _MD_resume_thread
+#define _MD_CLEAN_THREAD(_thread)
+
+#endif /* ! _PR_PTHREADS */
+
+#define _MD_EARLY_INIT                  _MD_EarlyInit
+#define _MD_FINAL_INIT			_PR_UnixInit
+#define _PR_HAVE_CLOCK_MONOTONIC
+
+/*
+ * We wrapped the select() call.  _MD_SELECT refers to the built-in,
+ * unwrapped version.
+ */
+#define _MD_SELECT(nfds,r,w,e,tv) syscall(SYS_select,nfds,r,w,e,tv)
+#include <poll.h>
+#define _MD_POLL(fds,nfds,timeout) syscall(SYS_poll,fds,nfds,timeout)
+
+#if OpenBSD1_3 == 1L
+typedef unsigned int nfds_t;
+#endif
+
+#endif /* nspr_openbsd_defs_h___ */
diff --git a/nsprpub/pr/include/md/_os2.cfg b/nsprpub/pr/include/md/_os2.cfg
new file mode 100644
index 0000000000..67c2dedf54
--- /dev/null
+++ b/nsprpub/pr/include/md/_os2.cfg
@@ -0,0 +1,121 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_PC
+#define XP_PC
+#endif
+
+#ifndef XP_OS2
+#define XP_OS2
+#endif
+
+#ifndef OS2
+#define OS2
+#endif
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#ifdef NO_LONG_LONG
+#undef HAVE_LONG_LONG
+#else
+#ifndef HAVE_LONG_LONG
+#define HAVE_LONG_LONG 1
+#endif
+#endif
+
+#define PR_AF_INET6 24  /* same as AF_INET6 */
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD       4
+#define PR_BYTES_PER_DWORD	8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_WORD	32
+#define PR_BITS_PER_DWORD	64
+#define PR_BITS_PER_DOUBLE  64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_WORD_LOG2	5
+#define PR_BITS_PER_DWORD_LOG2	6
+#define PR_BITS_PER_DOUBLE_LOG2 6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_WORD	4
+#define PR_ALIGN_OF_DWORD	8
+#define PR_ALIGN_OF_POINTER 4
+
+#define PR_BYTES_PER_WORD_LOG2	2
+#define PR_BYTES_PER_DWORD_LOG2	2
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE      PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT     PR_BYTES_PER_SHORT
+#define BYTES_PER_INT       PR_BYTES_PER_INT
+#define BYTES_PER_INT64     PR_BYTES_PER_INT64
+#define BYTES_PER_LONG      PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT     PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE    PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD      PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD     PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE       PR_BITS_PER_BYTE
+#define BITS_PER_SHORT      PR_BITS_PER_SHORT
+#define BITS_PER_INT        PR_BITS_PER_INT
+#define BITS_PER_INT64      PR_BITS_PER_INT64
+#define BITS_PER_LONG       PR_BITS_PER_LONG
+#define BITS_PER_FLOAT      PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE     PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD       PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2  PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2 PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2   PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2 PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2  PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2 PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2    PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2  PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT      PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT        PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG       PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64      PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT      PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE     PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER    PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD       PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2		PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2    PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2    PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_os2.h b/nsprpub/pr/include/md/_os2.h
new file mode 100644
index 0000000000..330b291228
--- /dev/null
+++ b/nsprpub/pr/include/md/_os2.h
@@ -0,0 +1,504 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_os2_defs_h___
+#define nspr_os2_defs_h___
+
+#ifndef NO_LONG_LONG
+#define INCL_LONGLONG
+#endif
+#define INCL_DOS
+#define INCL_DOSPROCESS
+#define INCL_DOSERRORS
+#define INCL_WIN
+#define INCL_WPS
+#include <os2.h>
+#include <sys/select.h>
+
+#include "prio.h"
+
+#include <errno.h>
+
+/*
+ * Internal configuration macros
+ */
+
+#define PR_LINKER_ARCH      "os2"
+#define _PR_SI_SYSNAME        "OS2"
+#define _PR_SI_ARCHITECTURE   "x86"    /* XXXMB hardcode for now */
+
+#define HAVE_DLL
+#define _PR_GLOBAL_THREADS_ONLY
+#undef  HAVE_THREAD_AFFINITY
+#define _PR_HAVE_THREADSAFE_GETHOST
+#define _PR_HAVE_ATOMIC_OPS
+#define HAVE_NETINET_TCP_H
+
+#define HANDLE unsigned long
+#define HINSTANCE HMODULE
+
+/* --- Common User-Thread/Native-Thread Definitions --------------------- */
+
+/* --- Globals --- */
+extern struct PRLock                      *_pr_schedLock;
+
+/* --- Typedefs --- */
+typedef void (*FiberFunc)(void *);
+
+#define PR_NUM_GCREGS           8
+typedef PRInt32	                PR_CONTEXT_TYPE[PR_NUM_GCREGS];
+#define GC_VMBASE               0x40000000
+#define GC_VMLIMIT              0x00FFFFFF
+typedef int (*FARPROC)();
+
+#define _MD_MAGIC_THREAD	0x22222222
+#define _MD_MAGIC_THREADSTACK	0x33333333
+#define _MD_MAGIC_SEGMENT	0x44444444
+#define _MD_MAGIC_DIR		0x55555555
+#define _MD_MAGIC_CV        0x66666666
+
+struct _MDSemaphore {
+   HEV sem;
+};
+
+struct _MDCPU {
+    int              unused;
+}; 
+
+struct _MDThread {
+    HEV              blocked_sema;      /* Threads block on this when waiting
+                                         * for IO or CondVar.
+                                         */
+    PRBool           inCVWaitQueue;     /* PR_TRUE if the thread is in the
+                                         * wait queue of some cond var.
+                                         * PR_FALSE otherwise.  */
+    TID              handle;            /* OS/2 thread handle */
+    void            *sp;                /* only valid when suspended */
+    PRUint32         magic;             /* for debugging */
+    PR_CONTEXT_TYPE  gcContext;         /* Thread context for GC */
+    struct PRThread *prev, *next;       /* used by the cvar wait queue to
+                                         * chain the PRThread structures
+                                         * together */
+};
+
+struct _MDThreadStack {
+    PRUint32           magic;          /* for debugging */
+};
+
+struct _MDSegment {
+    PRUint32           magic;          /* for debugging */
+};
+
+#undef PROFILE_LOCKS
+
+struct _MDDir {
+    HDIR           d_hdl;
+    union {
+        FILEFINDBUF3  small;
+        FILEFINDBUF3L large;
+    } d_entry;
+    PRBool           firstEntry;     /* Is this the entry returned
+                                      * by FindFirstFile()? */
+    PRUint32         magic;          /* for debugging */
+};
+
+struct _MDCVar {
+    PRUint32 magic;
+    struct PRThread *waitHead, *waitTail;  /* the wait queue: a doubly-
+                                            * linked list of threads
+                                            * waiting on this condition
+                                            * variable */
+    PRIntn nwait;                          /* number of threads in the
+                                            * wait queue */
+};
+
+#define _MD_CV_NOTIFIED_LENGTH 6
+typedef struct _MDNotified _MDNotified;
+struct _MDNotified {
+    PRIntn length;                     /* # of used entries in this
+                                        * structure */
+    struct {
+        struct _MDCVar *cv;            /* the condition variable notified */
+        PRIntn times;                  /* and the number of times notified */
+        struct PRThread *notifyHead;   /* list of threads to wake up */
+    } cv[_MD_CV_NOTIFIED_LENGTH];
+    _MDNotified *link;                 /* link to another of these, or NULL */
+};
+
+struct _MDLock {
+    HMTX mutex;                        /* this is recursive on OS/2 */
+
+    /*
+     * When notifying cvars, there is no point in actually
+     * waking up the threads waiting on the cvars until we've
+     * released the lock.  So, we temporarily record the cvars.
+     * When doing an unlock, we'll then wake up the waiting threads.
+     */
+    struct _MDNotified notified;     /* array of conditions notified */
+#ifdef PROFILE_LOCKS
+    PRInt32 hitcount;
+    PRInt32 misscount;
+#endif
+};
+
+struct _MDFileDesc {
+    PRInt32 osfd;    /* The osfd can come from one of three spaces:
+                      * - For stdin, stdout, and stderr, we are using
+                      *   the libc file handle (0, 1, 2), which is an int.
+                      * - For files and pipes, we are using OS/2 handles,
+                      *   which is a void*.
+                      * - For sockets, we are using int
+                      */
+};
+
+struct _MDProcess {
+   PID pid;
+};
+
+/* --- Misc stuff --- */
+#define _MD_GET_SP(thread)            (thread)->md.gcContext[6]
+
+/* --- IO stuff --- */
+
+#define _MD_OPEN                      (_PR_MD_OPEN)
+#define _MD_OPEN_FILE                 (_PR_MD_OPEN)
+#define _MD_READ                      (_PR_MD_READ)
+#define _MD_WRITE                     (_PR_MD_WRITE)
+#define _MD_WRITEV                    (_PR_MD_WRITEV)
+#define _MD_LSEEK                     (_PR_MD_LSEEK)
+#define _MD_LSEEK64                   (_PR_MD_LSEEK64)
+extern PRInt32 _MD_CloseFile(PRInt32 osfd);
+#define _MD_CLOSE_FILE                _MD_CloseFile
+#define _MD_GETFILEINFO               (_PR_MD_GETFILEINFO)
+#define _MD_GETFILEINFO64             (_PR_MD_GETFILEINFO64)
+#define _MD_GETOPENFILEINFO           (_PR_MD_GETOPENFILEINFO)
+#define _MD_GETOPENFILEINFO64         (_PR_MD_GETOPENFILEINFO64)
+#define _MD_STAT                      (_PR_MD_STAT)
+#define _MD_RENAME                    (_PR_MD_RENAME)
+#define _MD_ACCESS                    (_PR_MD_ACCESS)
+#define _MD_DELETE                    (_PR_MD_DELETE)
+#define _MD_MKDIR                     (_PR_MD_MKDIR)
+#define _MD_MAKE_DIR                  (_PR_MD_MKDIR)
+#define _MD_RMDIR                     (_PR_MD_RMDIR)
+#define _MD_LOCKFILE                  (_PR_MD_LOCKFILE)
+#define _MD_TLOCKFILE                 (_PR_MD_TLOCKFILE)
+#define _MD_UNLOCKFILE                (_PR_MD_UNLOCKFILE)
+
+/* --- Socket IO stuff --- */
+
+/* The ones that don't map directly may need to be re-visited... */
+#define _MD_EACCES                EACCES
+#define _MD_EADDRINUSE            EADDRINUSE
+#define _MD_EADDRNOTAVAIL         EADDRNOTAVAIL
+#define _MD_EAFNOSUPPORT          EAFNOSUPPORT
+#define _MD_EAGAIN                EWOULDBLOCK
+#define _MD_EALREADY              EALREADY
+#define _MD_EBADF                 EBADF
+#define _MD_ECONNREFUSED          ECONNREFUSED
+#define _MD_ECONNRESET            ECONNRESET
+#define _MD_EFAULT                SOCEFAULT
+#define _MD_EINPROGRESS           EINPROGRESS
+#define _MD_EINTR                 EINTR
+#define _MD_EINVAL                EINVAL
+#define _MD_EISCONN               EISCONN
+#define _MD_ENETUNREACH           ENETUNREACH
+#define _MD_ENOENT                ENOENT
+#define _MD_ENOTCONN              ENOTCONN
+#define _MD_ENOTSOCK              ENOTSOCK
+#define _MD_EOPNOTSUPP            EOPNOTSUPP
+#define _MD_EWOULDBLOCK           EWOULDBLOCK
+#define _MD_GET_SOCKET_ERROR()    sock_errno()
+#ifndef INADDR_LOOPBACK /* For some reason this is not defined in OS2 tcpip */
+/*  #define INADDR_LOOPBACK         INADDR_ANY */
+#endif  
+
+#define _MD_INIT_FILEDESC(fd)
+extern void _MD_MakeNonblock(PRFileDesc *f);
+#define _MD_MAKE_NONBLOCK             _MD_MakeNonblock
+#define _MD_INIT_FD_INHERITABLE       (_PR_MD_INIT_FD_INHERITABLE)
+#define _MD_QUERY_FD_INHERITABLE      (_PR_MD_QUERY_FD_INHERITABLE)
+#define _MD_SHUTDOWN                  (_PR_MD_SHUTDOWN)
+#define _MD_LISTEN                    _PR_MD_LISTEN
+extern PRInt32 _MD_CloseSocket(PRInt32 osfd);
+#define _MD_CLOSE_SOCKET              _MD_CloseSocket
+#define _MD_SENDTO                    (_PR_MD_SENDTO)
+#define _MD_RECVFROM                  (_PR_MD_RECVFROM)
+#define _MD_SOCKETPAIR                (_PR_MD_SOCKETPAIR)
+#define _MD_GETSOCKNAME               (_PR_MD_GETSOCKNAME)
+#define _MD_GETPEERNAME               (_PR_MD_GETPEERNAME)
+#define _MD_GETSOCKOPT                (_PR_MD_GETSOCKOPT)
+#define _MD_SETSOCKOPT                (_PR_MD_SETSOCKOPT)
+
+#define _MD_FSYNC                     _PR_MD_FSYNC
+#define _MD_SET_FD_INHERITABLE        (_PR_MD_SET_FD_INHERITABLE)
+
+#ifdef _PR_HAVE_ATOMIC_OPS
+#define _MD_INIT_ATOMIC()
+#define _MD_ATOMIC_INCREMENT          _PR_MD_ATOMIC_INCREMENT
+#define _MD_ATOMIC_ADD                _PR_MD_ATOMIC_ADD
+#define _MD_ATOMIC_DECREMENT          _PR_MD_ATOMIC_DECREMENT
+#define _MD_ATOMIC_SET                _PR_MD_ATOMIC_SET
+#endif
+
+#define _MD_INIT_IO                   (_PR_MD_INIT_IO)
+#define _MD_PR_POLL                   (_PR_MD_PR_POLL)
+
+#define _MD_SOCKET                    (_PR_MD_SOCKET)
+extern PRInt32 _MD_SocketAvailable(PRFileDesc *fd);
+#define _MD_SOCKETAVAILABLE           _MD_SocketAvailable
+#define _MD_PIPEAVAILABLE             _MD_SocketAvailable
+#define _MD_CONNECT                   (_PR_MD_CONNECT)
+extern PRInt32 _MD_Accept(PRFileDesc *fd, PRNetAddr *raddr, PRUint32 *rlen,
+        PRIntervalTime timeout);
+#define _MD_ACCEPT                    _MD_Accept
+#define _MD_BIND                      (_PR_MD_BIND)
+#define _MD_RECV                      (_PR_MD_RECV)
+#define _MD_SEND                      (_PR_MD_SEND)
+
+/* --- Scheduler stuff --- */
+/* #define _MD_PAUSE_CPU                 _PR_MD_PAUSE_CPU */
+#define _MD_PAUSE_CPU
+
+/* --- DIR stuff --- */
+#define PR_DIRECTORY_SEPARATOR        '\\'
+#define PR_DIRECTORY_SEPARATOR_STR    "\\"
+#define PR_PATH_SEPARATOR		';'
+#define PR_PATH_SEPARATOR_STR		";"
+#define _MD_ERRNO()                   errno
+#define _MD_OPEN_DIR                  (_PR_MD_OPEN_DIR)
+#define _MD_CLOSE_DIR                 (_PR_MD_CLOSE_DIR)
+#define _MD_READ_DIR                  (_PR_MD_READ_DIR)
+
+/* --- Segment stuff --- */
+#define _MD_INIT_SEGS()
+#define _MD_ALLOC_SEGMENT(seg, size, vaddr)   0
+#define _MD_FREE_SEGMENT(seg)
+
+/* --- Environment Stuff --- */
+#define _MD_GET_ENV                 (_PR_MD_GET_ENV)
+#define _MD_PUT_ENV                 (_PR_MD_PUT_ENV)
+
+/* --- Threading Stuff --- */
+#define _MD_DEFAULT_STACK_SIZE      65536L
+#define _MD_INIT_THREAD             (_PR_MD_INIT_THREAD)
+#define _MD_INIT_ATTACHED_THREAD    (_PR_MD_INIT_THREAD)
+#define _MD_CREATE_THREAD           (_PR_MD_CREATE_THREAD)
+#define _MD_YIELD                   (_PR_MD_YIELD)
+#define _MD_SET_PRIORITY            (_PR_MD_SET_PRIORITY)
+#define _MD_CLEAN_THREAD            (_PR_MD_CLEAN_THREAD)
+#define _MD_SETTHREADAFFINITYMASK   (_PR_MD_SETTHREADAFFINITYMASK)
+#define _MD_GETTHREADAFFINITYMASK   (_PR_MD_GETTHREADAFFINITYMASK)
+#define _MD_EXIT_THREAD             (_PR_MD_EXIT_THREAD)
+#define _MD_SUSPEND_THREAD          (_PR_MD_SUSPEND_THREAD)
+#define _MD_RESUME_THREAD           (_PR_MD_RESUME_THREAD)
+#define _MD_SUSPEND_CPU             (_PR_MD_SUSPEND_CPU)
+#define _MD_RESUME_CPU              (_PR_MD_RESUME_CPU)
+#define _MD_WAKEUP_CPUS             (_PR_MD_WAKEUP_CPUS)
+#define _MD_BEGIN_SUSPEND_ALL()
+#define _MD_BEGIN_RESUME_ALL()
+#define _MD_END_SUSPEND_ALL()
+#define _MD_END_RESUME_ALL()
+
+/* --- Lock stuff --- */
+#define _PR_LOCK                      _MD_LOCK
+#define _PR_UNLOCK					  _MD_UNLOCK
+
+#define _MD_NEW_LOCK                  (_PR_MD_NEW_LOCK)
+#define _MD_FREE_LOCK(lock)           (DosCloseMutexSem((lock)->mutex))
+#define _MD_LOCK(lock)                (DosRequestMutexSem((lock)->mutex, SEM_INDEFINITE_WAIT))
+#define _MD_TEST_AND_LOCK(lock)       (DosRequestMutexSem((lock)->mutex, SEM_INDEFINITE_WAIT),0)
+#define _MD_UNLOCK                    (_PR_MD_UNLOCK)
+
+/* --- lock and cv waiting --- */
+#define _MD_WAIT                      (_PR_MD_WAIT)
+#define _MD_WAKEUP_WAITER             (_PR_MD_WAKEUP_WAITER)
+
+/* --- CVar ------------------- */
+#define _MD_WAIT_CV					  (_PR_MD_WAIT_CV)
+#define _MD_NEW_CV					  (_PR_MD_NEW_CV)
+#define _MD_FREE_CV					  (_PR_MD_FREE_CV)
+#define _MD_NOTIFY_CV				  (_PR_MD_NOTIFY_CV	)
+#define _MD_NOTIFYALL_CV			  (_PR_MD_NOTIFYALL_CV)
+
+   /* XXXMB- the IOQ stuff is certainly not working correctly yet. */
+/* extern  struct _MDLock              _pr_ioq_lock; */
+#define _MD_IOQ_LOCK()                
+#define _MD_IOQ_UNLOCK()              
+
+
+/* --- Initialization stuff --- */
+#define _MD_START_INTERRUPTS()
+#define _MD_STOP_INTERRUPTS()
+#define _MD_DISABLE_CLOCK_INTERRUPTS()
+#define _MD_ENABLE_CLOCK_INTERRUPTS()
+#define _MD_BLOCK_CLOCK_INTERRUPTS()
+#define _MD_UNBLOCK_CLOCK_INTERRUPTS()
+#define _MD_EARLY_INIT                (_PR_MD_EARLY_INIT)
+#define _MD_FINAL_INIT()
+#define _MD_EARLY_CLEANUP()
+#define _MD_INIT_CPUS()
+#define _MD_INIT_RUNNING_CPU(cpu)
+
+struct PRProcess;
+struct PRProcessAttr;
+
+#define _MD_CREATE_PROCESS _PR_CreateOS2Process
+extern struct PRProcess * _PR_CreateOS2Process(
+    const char *path,
+    char *const *argv,
+    char *const *envp,
+    const struct PRProcessAttr *attr
+);
+
+#define _MD_DETACH_PROCESS _PR_DetachOS2Process
+extern PRStatus _PR_DetachOS2Process(struct PRProcess *process);
+
+/* --- Wait for a child process to terminate --- */
+#define _MD_WAIT_PROCESS _PR_WaitOS2Process
+extern PRStatus _PR_WaitOS2Process(struct PRProcess *process, 
+    PRInt32 *exitCode);
+
+#define _MD_KILL_PROCESS _PR_KillOS2Process
+extern PRStatus _PR_KillOS2Process(struct PRProcess *process);
+
+#define _MD_CLEANUP_BEFORE_EXIT()
+#define _MD_EXIT                          (_PR_MD_EXIT)
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \
+    PR_BEGIN_MACRO \
+    *status = PR_TRUE; \
+    PR_END_MACRO
+#define _MD_SWITCH_CONTEXT
+#define _MD_RESTORE_CONTEXT
+
+/* --- Intervals --- */
+#define _MD_INTERVAL_INIT                 (_PR_MD_INTERVAL_INIT)
+#define _MD_GET_INTERVAL                  (_PR_MD_GET_INTERVAL)
+#define _MD_INTERVAL_PER_SEC              (_PR_MD_INTERVAL_PER_SEC)
+#define _MD_INTERVAL_PER_MILLISEC()       (_PR_MD_INTERVAL_PER_SEC() / 1000)
+#define _MD_INTERVAL_PER_MICROSEC()       (_PR_MD_INTERVAL_PER_SEC() / 1000000)
+
+/* --- Native-Thread Specific Definitions ------------------------------- */
+
+typedef struct __NSPR_TLS
+{
+    struct PRThread  *_pr_thread_last_run;
+    struct PRThread  *_pr_currentThread;
+    struct _PRCPU    *_pr_currentCPU;
+} _NSPR_TLS;
+
+extern _NSPR_TLS*  pThreadLocalStorage;
+NSPR_API(void) _PR_MD_ENSURE_TLS(void);
+
+#define _MD_GET_ATTACHED_THREAD() pThreadLocalStorage->_pr_currentThread
+extern struct PRThread * _MD_CURRENT_THREAD(void);
+#define _MD_SET_CURRENT_THREAD(_thread) _PR_MD_ENSURE_TLS(); pThreadLocalStorage->_pr_currentThread = (_thread)
+
+#define _MD_LAST_THREAD() pThreadLocalStorage->_pr_thread_last_run
+#define _MD_SET_LAST_THREAD(_thread) _PR_MD_ENSURE_TLS(); pThreadLocalStorage->_pr_thread_last_run = (_thread)
+
+#define _MD_CURRENT_CPU() pThreadLocalStorage->_pr_currentCPU
+#define _MD_SET_CURRENT_CPU(_cpu) _PR_MD_ENSURE_TLS(); pThreadLocalStorage->_pr_currentCPU = (_cpu)
+
+/* lth. #define _MD_SET_INTSOFF(_val) (_pr_ints_off = (_val)) */
+/* lth. #define _MD_GET_INTSOFF() _pr_ints_off */
+/* lth. #define _MD_INCREMENT_INTSOFF() (_pr_ints_off++) */
+/* lth. #define _MD_DECREMENT_INTSOFF() (_pr_ints_off--) */
+
+/* --- Scheduler stuff --- */
+#define LOCK_SCHEDULER()                 0
+#define UNLOCK_SCHEDULER()               0
+#define _PR_LockSched()                	 0
+#define _PR_UnlockSched()                0
+
+/* --- Initialization stuff --- */
+#define _MD_INIT_LOCKS()
+
+/* --- Stack stuff --- */
+#define _MD_INIT_STACK(stack, redzone)
+#define _MD_CLEAR_STACK(stack)
+
+/* --- Memory-mapped files stuff --- */
+/* ReadOnly and WriteCopy modes are simulated on OS/2;
+ * ReadWrite mode is not supported.
+ */
+struct _MDFileMap {
+    PROffset64  maxExtent;
+};
+
+extern PRStatus _MD_CreateFileMap(struct PRFileMap *fmap, PRInt64 size);
+#define _MD_CREATE_FILE_MAP _MD_CreateFileMap
+
+extern PRInt32 _MD_GetMemMapAlignment(void);
+#define _MD_GET_MEM_MAP_ALIGNMENT _MD_GetMemMapAlignment
+
+extern void * _MD_MemMap(struct PRFileMap *fmap, PRInt64 offset,
+        PRUint32 len);
+#define _MD_MEM_MAP _MD_MemMap
+
+extern PRStatus _MD_MemUnmap(void *addr, PRUint32 size);
+#define _MD_MEM_UNMAP _MD_MemUnmap
+
+extern PRStatus _MD_CloseFileMap(struct PRFileMap *fmap);
+#define _MD_CLOSE_FILE_MAP _MD_CloseFileMap
+
+/* Some stuff for setting up thread contexts */
+typedef ULONG DWORD, *PDWORD;
+
+/* The following definitions and two structures are new in OS/2 Warp 4.0.
+ */
+#ifndef CONTEXT_CONTROL
+#define CONTEXT_CONTROL        0x00000001
+#define CONTEXT_INTEGER        0x00000002
+#define CONTEXT_SEGMENTS       0x00000004
+#define CONTEXT_FLOATING_POINT 0x00000008
+#define CONTEXT_FULL           0x0000000F
+
+#pragma pack(2)
+typedef struct _FPREG {
+    ULONG      losig;    /*  Low 32-bits of the significand. */
+    ULONG      hisig;    /*  High 32-bits of the significand. */
+    USHORT     signexp;  /*  Sign and exponent. */
+} FPREG;
+typedef struct _CONTEXTRECORD {
+    ULONG     ContextFlags;
+    ULONG     ctx_env[7];
+    FPREG     ctx_stack[8];
+    ULONG     ctx_SegGs;     /*  GS register. */
+    ULONG     ctx_SegFs;     /*  FS register. */
+    ULONG     ctx_SegEs;     /*  ES register. */
+    ULONG     ctx_SegDs;     /*  DS register. */
+    ULONG     ctx_RegEdi;    /*  EDI register. */
+    ULONG     ctx_RegEsi;    /*  ESI register. */
+    ULONG     ctx_RegEax;    /*  EAX register. */
+    ULONG     ctx_RegEbx;    /*  EBX register. */
+    ULONG     ctx_RegEcx;    /*  ECX register. */
+    ULONG     ctx_RegEdx;    /*  EDX register. */
+    ULONG     ctx_RegEbp;    /*  EBP register. */
+    ULONG     ctx_RegEip;    /*  EIP register. */
+    ULONG     ctx_SegCs;     /*  CS register. */
+    ULONG     ctx_EFlags;    /*  EFLAGS register. */
+    ULONG     ctx_RegEsp;    /*  ESP register. */
+    ULONG     ctx_SegSs;     /*  SS register. */
+} CONTEXTRECORD, *PCONTEXTRECORD;
+#pragma pack()
+#endif
+
+extern APIRET (* APIENTRY QueryThreadContext)(TID, ULONG, PCONTEXTRECORD);
+
+/*
+#define _pr_tid            (((PTIB2)_getTIBvalue(offsetof(TIB, tib_ptib2)))->tib2_ultid)
+#define _pr_current_Thread (_system_tls[_pr_tid-1].__pr_current_thread)
+*/
+
+/* Some simple mappings of Windows API's to OS/2 API's to make our lives a
+ * little bit easier.  Only add one here if it is a DIRECT mapping.  We are
+ * not emulating anything.  Just mapping.
+ */
+#define FreeLibrary(x) DosFreeModule((HMODULE)x)
+#define OutputDebugStringA(x)
+                               
+extern int _MD_os2_get_nonblocking_connect_error(int osfd);
+
+#endif /* nspr_os2_defs_h___ */
diff --git a/nsprpub/pr/include/md/_os2_errors.h b/nsprpub/pr/include/md/_os2_errors.h
new file mode 100644
index 0000000000..fa96554f89
--- /dev/null
+++ b/nsprpub/pr/include/md/_os2_errors.h
@@ -0,0 +1,128 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_os2_errors_h___
+#define nspr_os2_errors_h___
+
+#include "md/_os2.h"
+#ifndef assert
+  #include <assert.h>
+#endif  
+
+NSPR_API(void) _MD_os2_map_default_error(PRInt32 err);
+#define	_PR_MD_MAP_DEFAULT_ERROR	_MD_os2_map_default_error
+
+NSPR_API(void) _MD_os2_map_opendir_error(PRInt32 err);
+#define	_PR_MD_MAP_OPENDIR_ERROR	_MD_os2_map_opendir_error
+
+NSPR_API(void) _MD_os2_map_closedir_error(PRInt32 err);
+#define	_PR_MD_MAP_CLOSEDIR_ERROR	_MD_os2_map_closedir_error
+
+NSPR_API(void) _MD_os2_readdir_error(PRInt32 err);
+#define	_PR_MD_MAP_READDIR_ERROR	_MD_os2_readdir_error
+
+NSPR_API(void) _MD_os2_map_delete_error(PRInt32 err);
+#define	_PR_MD_MAP_DELETE_ERROR	_MD_os2_map_delete_error
+
+NSPR_API(void) _MD_os2_map_stat_error(PRInt32 err);
+#define	_PR_MD_MAP_STAT_ERROR	_MD_os2_map_stat_error
+
+NSPR_API(void) _MD_os2_map_fstat_error(PRInt32 err);
+#define	_PR_MD_MAP_FSTAT_ERROR	_MD_os2_map_fstat_error
+
+NSPR_API(void) _MD_os2_map_rename_error(PRInt32 err);
+#define	_PR_MD_MAP_RENAME_ERROR	_MD_os2_map_rename_error
+
+NSPR_API(void) _MD_os2_map_access_error(PRInt32 err);
+#define	_PR_MD_MAP_ACCESS_ERROR	_MD_os2_map_access_error
+
+NSPR_API(void) _MD_os2_map_mkdir_error(PRInt32 err);
+#define	_PR_MD_MAP_MKDIR_ERROR	_MD_os2_map_mkdir_error
+
+NSPR_API(void) _MD_os2_map_rmdir_error(PRInt32 err);
+#define	_PR_MD_MAP_RMDIR_ERROR	_MD_os2_map_rmdir_error
+
+NSPR_API(void) _MD_os2_map_read_error(PRInt32 err);
+#define	_PR_MD_MAP_READ_ERROR	_MD_os2_map_read_error
+
+NSPR_API(void) _MD_os2_map_transmitfile_error(PRInt32 err);
+#define	_PR_MD_MAP_TRANSMITFILE_ERROR	_MD_os2_map_transmitfile_error
+
+NSPR_API(void) _MD_os2_map_write_error(PRInt32 err);
+#define	_PR_MD_MAP_WRITE_ERROR	_MD_os2_map_write_error
+
+NSPR_API(void) _MD_os2_map_lseek_error(PRInt32 err);
+#define	_PR_MD_MAP_LSEEK_ERROR	_MD_os2_map_lseek_error
+
+NSPR_API(void) _MD_os2_map_fsync_error(PRInt32 err);
+#define	_PR_MD_MAP_FSYNC_ERROR	_MD_os2_map_fsync_error
+
+NSPR_API(void) _MD_os2_map_close_error(PRInt32 err);
+#define	_PR_MD_MAP_CLOSE_ERROR	_MD_os2_map_close_error
+
+NSPR_API(void) _MD_os2_map_socket_error(PRInt32 err);
+#define	_PR_MD_MAP_SOCKET_ERROR	_MD_os2_map_socket_error
+
+NSPR_API(void) _MD_os2_map_recv_error(PRInt32 err);
+#define	_PR_MD_MAP_RECV_ERROR	_MD_os2_map_recv_error
+
+NSPR_API(void) _MD_os2_map_recvfrom_error(PRInt32 err);
+#define	_PR_MD_MAP_RECVFROM_ERROR	_MD_os2_map_recvfrom_error
+
+NSPR_API(void) _MD_os2_map_send_error(PRInt32 err);
+#define	_PR_MD_MAP_SEND_ERROR	_MD_os2_map_send_error
+
+NSPR_API(void) _MD_os2_map_sendto_error(PRInt32 err);
+#define	_PR_MD_MAP_SENDTO_ERROR	_MD_os2_map_sendto_error
+
+NSPR_API(void) _MD_os2_map_writev_error(int err);
+#define	_PR_MD_MAP_WRITEV_ERROR	_MD_os2_map_writev_error
+
+NSPR_API(void) _MD_os2_map_accept_error(PRInt32 err);
+#define	_PR_MD_MAP_ACCEPT_ERROR	_MD_os2_map_accept_error
+
+NSPR_API(void) _MD_os2_map_acceptex_error(PRInt32 err);
+#define	_PR_MD_MAP_ACCEPTEX_ERROR	_MD_os2_map_acceptex_error
+
+NSPR_API(void) _MD_os2_map_connect_error(PRInt32 err);
+#define	_PR_MD_MAP_CONNECT_ERROR	_MD_os2_map_connect_error
+
+NSPR_API(void) _MD_os2_map_bind_error(PRInt32 err);
+#define	_PR_MD_MAP_BIND_ERROR	_MD_os2_map_bind_error
+
+NSPR_API(void) _MD_os2_map_listen_error(PRInt32 err);
+#define	_PR_MD_MAP_LISTEN_ERROR	_MD_os2_map_listen_error
+
+NSPR_API(void) _MD_os2_map_shutdown_error(PRInt32 err);
+#define	_PR_MD_MAP_SHUTDOWN_ERROR	_MD_os2_map_shutdown_error
+
+NSPR_API(void) _MD_os2_map_socketpair_error(int err);
+#define	_PR_MD_MAP_SOCKETPAIR_ERROR	_MD_os2_map_socketpair_error
+
+NSPR_API(void) _MD_os2_map_getsockname_error(PRInt32 err);
+#define	_PR_MD_MAP_GETSOCKNAME_ERROR	_MD_os2_map_getsockname_error
+
+NSPR_API(void) _MD_os2_map_getpeername_error(PRInt32 err);
+#define	_PR_MD_MAP_GETPEERNAME_ERROR	_MD_os2_map_getpeername_error
+
+NSPR_API(void) _MD_os2_map_getsockopt_error(PRInt32 err);
+#define	_PR_MD_MAP_GETSOCKOPT_ERROR	_MD_os2_map_getsockopt_error
+
+NSPR_API(void) _MD_os2_map_setsockopt_error(PRInt32 err);
+#define	_PR_MD_MAP_SETSOCKOPT_ERROR	_MD_os2_map_setsockopt_error
+
+NSPR_API(void) _MD_os2_map_open_error(PRInt32 err);
+#define	_PR_MD_MAP_OPEN_ERROR	_MD_os2_map_open_error
+
+NSPR_API(void) _MD_os2_map_gethostname_error(PRInt32 err);
+#define	_PR_MD_MAP_GETHOSTNAME_ERROR	_MD_os2_map_gethostname_error
+
+NSPR_API(void) _MD_os2_map_select_error(PRInt32 err);
+#define	_PR_MD_MAP_SELECT_ERROR	_MD_os2_map_select_error
+
+NSPR_API(void) _MD_os2_map_lockf_error(int err);
+#define _PR_MD_MAP_LOCKF_ERROR  _MD_os2_map_lockf_error
+
+#endif /* nspr_os2_errors_h___ */
diff --git a/nsprpub/pr/include/md/_osf1.cfg b/nsprpub/pr/include/md/_osf1.cfg
new file mode 100644
index 0000000000..7999402cbc
--- /dev/null
+++ b/nsprpub/pr/include/md/_osf1.cfg
@@ -0,0 +1,116 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_UNIX
+#define XP_UNIX
+#endif
+
+#ifndef OSF1
+#define OSF1
+#endif
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#ifndef HAVE_LONG_LONG
+#define	HAVE_LONG_LONG
+#endif
+#define HAVE_ALIGNED_DOUBLES
+#define HAVE_ALIGNED_LONGLONGS
+#ifndef IS_64
+#define IS_64
+#endif
+
+#define PR_AF_INET6 26  /* same as AF_INET6 */
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_BYTES_PER_WORD_LOG2  3
+#define PR_BYTES_PER_DWORD_LOG2 3
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+
+#define _PR_POLL_BACKCOMPAT
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE		PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT 	PR_BYTES_PER_SHORT
+#define BYTES_PER_INT 		PR_BYTES_PER_INT
+#define BYTES_PER_INT64		PR_BYTES_PER_INT64
+#define BYTES_PER_LONG		PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT		PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE	PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD		PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD		PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE		PR_BITS_PER_BYTE
+#define BITS_PER_SHORT		PR_BITS_PER_SHORT
+#define BITS_PER_INT		PR_BITS_PER_INT
+#define BITS_PER_INT64		PR_BITS_PER_INT64
+#define BITS_PER_LONG		PR_BITS_PER_LONG
+#define BITS_PER_FLOAT		PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE		PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD		PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2	PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2	PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2	PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2	PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2	PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2	PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2 	PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2	PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT		PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT		PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG		PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64		PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT		PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE		PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER	PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD		PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2	PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2	PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2	PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_osf1.h b/nsprpub/pr/include/md/_osf1.h
new file mode 100644
index 0000000000..57445f7732
--- /dev/null
+++ b/nsprpub/pr/include/md/_osf1.h
@@ -0,0 +1,222 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_osf1_defs_h___
+#define nspr_osf1_defs_h___
+
+/*
+ * Internal configuration macros
+ */
+
+#define PR_LINKER_ARCH	"osf"
+#define _PR_SI_SYSNAME	"OSF"
+#define _PR_SI_ARCHITECTURE "alpha"
+#define PR_DLL_SUFFIX		".so"
+
+#define _PR_VMBASE              0x30000000
+#define _PR_STACK_VMBASE        0x50000000
+#define _MD_DEFAULT_STACK_SIZE  131072L
+#define _MD_MMAP_FLAGS          MAP_PRIVATE
+
+#undef  HAVE_STACK_GROWING_UP
+#undef 	HAVE_WEAK_IO_SYMBOLS
+#undef 	HAVE_WEAK_MALLOC_SYMBOLS
+#define HAVE_DLL
+#define HAVE_BSD_FLOCK
+
+#define NEED_TIME_R
+#define USE_DLFCN
+
+#define _PR_POLL_AVAILABLE
+#define _PR_USE_POLL
+#define _PR_STAT_HAS_ONLY_ST_ATIME
+#define _PR_HAVE_LARGE_OFF_T
+#define _PR_HAVE_GETIPNODEBYNAME
+#define _PR_HAVE_GETIPNODEBYADDR
+#define _PR_HAVE_GETADDRINFO
+#define _PR_INET6_PROBE
+#ifdef _PR_INET6
+#define _PR_HAVE_INET_NTOP
+#else
+#define AF_INET6 26
+#ifndef AI_CANONNAME
+#define AI_CANONNAME 0x00000002
+struct addrinfo {
+    int              ai_flags;
+    int              ai_family;
+    int              ai_socktype;
+    int              ai_protocol;
+    size_t           ai_addrlen;
+    char            *ai_canonname;
+    struct sockaddr *ai_addr;
+    struct addrinfo *ai_next;
+};
+#endif
+#define AI_V4MAPPED 0x00000010
+#define AI_ALL      0x00000008
+#define AI_ADDRCONFIG 0x00000020
+#endif
+#define _PR_HAVE_POSIX_SEMAPHORES
+#define PR_HAVE_POSIX_NAMED_SHARED_MEMORY
+
+#define USE_SETJMP
+
+#include <setjmp.h>
+
+/*
+ * A jmp_buf is actually a struct sigcontext.  The sc_sp field of
+ * struct sigcontext is the stack pointer.
+ */
+#define _MD_GET_SP(_t) (((struct sigcontext *) (_t)->md.context)->sc_sp)
+#define PR_NUM_GCREGS _JBLEN
+#define CONTEXT(_th) ((_th)->md.context)
+
+/*
+** Initialize a thread context to run "_main()" when started
+*/
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)	      \
+{									  \
+        *status = PR_TRUE;              \
+    if (setjmp(CONTEXT(_thread))) {				\
+	(*_main)();						\
+    }								\
+    _MD_GET_SP(_thread) = (long) ((_sp) - 64);			\
+    _MD_GET_SP(_thread) &= ~15;					\
+}
+
+#define _MD_SWITCH_CONTEXT(_thread)  \
+    if (!setjmp(CONTEXT(_thread))) { \
+	(_thread)->md.errcode = errno;  \
+	_PR_Schedule();		     \
+    }
+
+/*
+** Restore a thread context, saved by _MD_SWITCH_CONTEXT
+*/
+#define _MD_RESTORE_CONTEXT(_thread) \
+{				     \
+    errno = (_thread)->md.errcode;     \
+    _MD_SET_CURRENT_THREAD(_thread);	\
+    longjmp(CONTEXT(_thread), 1);    \
+}
+
+/* Machine-dependent (MD) data structures */
+
+struct _MDThread {
+    jmp_buf context;
+    int id;
+    int errcode;
+};
+
+struct _MDThreadStack {
+    PRInt8 notused;
+};
+
+struct _MDLock {
+    PRInt8 notused;
+};
+
+struct _MDSemaphore {
+    PRInt8 notused;
+};
+
+struct _MDCVar {
+    PRInt8 notused;
+};
+
+struct _MDSegment {
+    PRInt8 notused;
+};
+
+/*
+ * md-specific cpu structure field
+ */
+#define _PR_MD_MAX_OSFD FD_SETSIZE
+
+struct _MDCPU_Unix {
+    PRCList ioQ;
+    PRUint32 ioq_timeout;
+    PRInt32 ioq_max_osfd;
+    PRInt32 ioq_osfd_cnt;
+#ifndef _PR_USE_POLL
+    fd_set fd_read_set, fd_write_set, fd_exception_set;
+    PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
+				fd_exception_cnt[_PR_MD_MAX_OSFD];
+#else
+	struct pollfd *ioq_pollfds;
+	int ioq_pollfds_size;
+#endif	/* _PR_USE_POLL */
+};
+
+#define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
+#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
+#define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
+#define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
+#define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
+#define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
+#define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
+#define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
+#define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
+#define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
+#define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
+#define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
+#define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)
+
+#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32
+
+struct _MDCPU {
+	struct _MDCPU_Unix md_unix;
+};
+
+#ifndef _PR_PTHREADS
+#define _MD_INIT_LOCKS()
+#endif
+#define _MD_NEW_LOCK(lock) PR_SUCCESS
+#define _MD_FREE_LOCK(lock)
+#define _MD_LOCK(lock)
+#define _MD_UNLOCK(lock)
+#define _MD_INIT_IO()
+#define _MD_IOQ_LOCK()
+#define _MD_IOQ_UNLOCK()
+
+/*
+ * The following are copied from _sunos.h, _aix.h.  This means
+ * some of them should probably be moved into _unixos.h.  But
+ * _irix.h seems to be quite different in regard to these macros.
+ */
+#define _MD_INTERVAL_USE_GTOD
+
+#define _MD_EARLY_INIT		_MD_EarlyInit
+#define _MD_FINAL_INIT		_PR_UnixInit
+#define _MD_INIT_RUNNING_CPU(cpu) _MD_unix_init_running_cpu(cpu)
+#define _MD_INIT_THREAD         _MD_InitializeThread
+#define _MD_EXIT_THREAD(thread)
+#define	_MD_SUSPEND_THREAD(thread)
+#define	_MD_RESUME_THREAD(thread)
+#define _MD_CLEAN_THREAD(_thread)
+
+/* The following defines unwrapped versions of select() and poll(). */
+#include <sys/time.h>
+extern int __select (int, fd_set *, fd_set *, fd_set *, struct timeval *);
+#define _MD_SELECT              __select
+
+#include <sys/poll.h>
+#define _MD_POLL __poll
+extern int __poll(struct pollfd filedes[], unsigned int nfds, int timeout);
+
+/*
+ * Atomic operations
+ */
+#ifdef OSF1_HAVE_MACHINE_BUILTINS_H
+#include <machine/builtins.h>
+#define _PR_HAVE_ATOMIC_OPS
+#define _MD_INIT_ATOMIC()
+#define _MD_ATOMIC_INCREMENT(val) (__ATOMIC_INCREMENT_LONG(val) + 1)
+#define _MD_ATOMIC_ADD(ptr, val)  (__ATOMIC_ADD_LONG(ptr, val) + val)
+#define _MD_ATOMIC_DECREMENT(val) (__ATOMIC_DECREMENT_LONG(val) - 1)
+#define _MD_ATOMIC_SET(val, newval) __ATOMIC_EXCH_LONG(val, newval)
+#endif /* OSF1_HAVE_MACHINE_BUILTINS_H */
+
+#endif /* nspr_osf1_defs_h___ */
diff --git a/nsprpub/pr/include/md/_pcos.h b/nsprpub/pr/include/md/_pcos.h
new file mode 100644
index 0000000000..3b4f2054fa
--- /dev/null
+++ b/nsprpub/pr/include/md/_pcos.h
@@ -0,0 +1,51 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef prpcos_h___
+#define prpcos_h___
+
+#define PR_DLL_SUFFIX		".dll"
+
+#include <stdlib.h>
+
+#define DIRECTORY_SEPARATOR         '\\'
+#define DIRECTORY_SEPARATOR_STR     "\\"
+#define PATH_SEPARATOR              ';'
+
+/*
+** Routines for processing command line arguments
+*/
+PR_BEGIN_EXTERN_C
+#ifndef XP_OS2
+extern char *optarg;
+extern int optind;
+extern int getopt(int argc, char **argv, char *spec);
+#endif
+PR_END_EXTERN_C
+
+
+/*
+** Definitions of directory structures amd functions
+** These definitions are from:
+**      <dirent.h>
+*/
+#ifdef XP_OS2
+#include <sys/types.h>
+#endif
+#include <sys/stat.h>
+#include <io.h>
+#include <fcntl.h>          /* O_BINARY */
+
+#ifdef OS2
+extern PRStatus _MD_OS2GetHostName(char *name, PRUint32 namelen);
+#define _MD_GETHOSTNAME _MD_OS2GetHostName
+#else
+extern PRStatus _MD_WindowsGetHostName(char *name, PRUint32 namelen);
+#define _MD_GETHOSTNAME _MD_WindowsGetHostName
+extern PRStatus _MD_WindowsGetSysInfo(PRSysInfo cmd, char *name, PRUint32 namelen);
+#define _MD_GETSYSINFO _MD_WindowsGetSysInfo
+#endif
+
+#endif /* prpcos_h___ */
diff --git a/nsprpub/pr/include/md/_pth.h b/nsprpub/pr/include/md/_pth.h
new file mode 100644
index 0000000000..eeeef04387
--- /dev/null
+++ b/nsprpub/pr/include/md/_pth.h
@@ -0,0 +1,270 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_pth_defs_h_
+#define nspr_pth_defs_h_
+
+/*
+** Appropriate definitions of entry points not used in a pthreads world
+*/
+#define _PR_MD_BLOCK_CLOCK_INTERRUPTS()
+#define _PR_MD_UNBLOCK_CLOCK_INTERRUPTS()
+#define _PR_MD_DISABLE_CLOCK_INTERRUPTS()
+#define _PR_MD_ENABLE_CLOCK_INTERRUPTS()
+
+/* In good standards fashion, the DCE threads (based on posix-4) are not
+ * quite the same as newer posix implementations.  These are mostly name
+ * changes and small differences, so macros usually do the trick
+ */
+#ifdef _PR_DCETHREADS
+#define _PT_PTHREAD_MUTEXATTR_INIT        pthread_mutexattr_create
+#define _PT_PTHREAD_MUTEXATTR_DESTROY     pthread_mutexattr_delete
+#define _PT_PTHREAD_MUTEX_INIT(m, a)      pthread_mutex_init(&(m), a)
+#define _PT_PTHREAD_MUTEX_IS_LOCKED(m)    (0 == pthread_mutex_trylock(&(m)))
+#define _PT_PTHREAD_CONDATTR_INIT         pthread_condattr_create
+#define _PT_PTHREAD_COND_INIT(m, a)       pthread_cond_init(&(m), a)
+#define _PT_PTHREAD_CONDATTR_DESTROY      pthread_condattr_delete
+
+/* Notes about differences between DCE threads and pthreads 10:
+ *   1. pthread_mutex_trylock returns 1 when it locks the mutex
+ *      0 when it does not.  The latest pthreads has a set of errno-like
+ *      return values.
+ *   2. return values from pthread_cond_timedwait are different.
+ *
+ *
+ *
+ */
+#elif defined(BSDI)
+/*
+ * Mutex and condition attributes are not supported.  The attr
+ * argument to pthread_mutex_init() and pthread_cond_init() must
+ * be passed as NULL.
+ *
+ * The memset calls in _PT_PTHREAD_MUTEX_INIT and _PT_PTHREAD_COND_INIT
+ * are to work around BSDI's using a single bit to indicate a mutex
+ * or condition variable is initialized.  This entire BSDI section
+ * will go away when BSDI releases updated threads libraries for
+ * BSD/OS 3.1 and 4.0.
+ */
+#define _PT_PTHREAD_MUTEXATTR_INIT(x)     0
+#define _PT_PTHREAD_MUTEXATTR_DESTROY(x)  /* */
+#define _PT_PTHREAD_MUTEX_INIT(m, a)      (memset(&(m), 0, sizeof(m)), \
+                                      pthread_mutex_init(&(m), NULL))
+#define _PT_PTHREAD_MUTEX_IS_LOCKED(m)    (EBUSY == pthread_mutex_trylock(&(m)))
+#define _PT_PTHREAD_CONDATTR_INIT(x)      0
+#define _PT_PTHREAD_CONDATTR_DESTROY(x)   /* */
+#define _PT_PTHREAD_COND_INIT(m, a)       (memset(&(m), 0, sizeof(m)), \
+                                      pthread_cond_init(&(m), NULL))
+#else
+#define _PT_PTHREAD_MUTEXATTR_INIT        pthread_mutexattr_init
+#define _PT_PTHREAD_MUTEXATTR_DESTROY     pthread_mutexattr_destroy
+#define _PT_PTHREAD_MUTEX_INIT(m, a)      pthread_mutex_init(&(m), &(a))
+#if defined(FREEBSD)
+#define _PT_PTHREAD_MUTEX_IS_LOCKED(m)    pt_pthread_mutex_is_locked(&(m))
+#else
+#define _PT_PTHREAD_MUTEX_IS_LOCKED(m)    (EBUSY == pthread_mutex_trylock(&(m)))
+#endif
+#if defined(ANDROID)
+/* Conditional attribute init and destroy aren't implemented in bionic. */
+#define _PT_PTHREAD_CONDATTR_INIT(x)      0
+#define _PT_PTHREAD_CONDATTR_DESTROY(x)   /* */
+#else
+#define _PT_PTHREAD_CONDATTR_INIT         pthread_condattr_init
+#define _PT_PTHREAD_CONDATTR_DESTROY      pthread_condattr_destroy
+#endif
+#define _PT_PTHREAD_COND_INIT(m, a)       pthread_cond_init(&(m), &(a))
+#endif
+
+/* The pthreads standard does not specify an invalid value for the
+ * pthread_t handle.  (0 is usually an invalid pthread identifier
+ * but there are exceptions, for example, DG/UX.)  These macros
+ * define a way to set the handle to or compare the handle with an
+ * invalid identifier.  These macros are not portable and may be
+ * more of a problem as we adapt to more pthreads implementations.
+ * They are only used in the PRMonitor functions.  Do not use them
+ * in new code.
+ *
+ * Unfortunately some of our clients depend on certain properties
+ * of our PRMonitor implementation, preventing us from replacing
+ * it by a portable implementation.
+ * - High-performance servers like the fact that PR_EnterMonitor
+ *   only calls PR_Lock and PR_ExitMonitor only calls PR_Unlock.
+ *   (A portable implementation would use a PRLock and a PRCondVar
+ *   to implement the recursive lock in a monitor and call both
+ *   PR_Lock and PR_Unlock in PR_EnterMonitor and PR_ExitMonitor.)
+ *   Unfortunately this forces us to read the monitor owner field
+ *   without holding a lock.
+ * - One way to make it safe to read the monitor owner field
+ *   without holding a lock is to make that field a PRThread*
+ *   (one should be able to read a pointer with a single machine
+ *   instruction).  However, PR_GetCurrentThread calls calloc if
+ *   it is called by a thread that was not created by NSPR.  The
+ *   malloc tracing tools in the Mozilla client use PRMonitor for
+ *   locking in their malloc, calloc, and free functions.  If
+ *   PR_EnterMonitor calls any of these functions, infinite
+ *   recursion ensues.
+ */
+#if defined(_PR_DCETHREADS)
+#define _PT_PTHREAD_INVALIDATE_THR_HANDLE(t) \
+	memset(&(t), 0, sizeof(pthread_t))
+#define _PT_PTHREAD_THR_HANDLE_IS_INVALID(t) \
+	(!memcmp(&(t), &pt_zero_tid, sizeof(pthread_t)))
+#define _PT_PTHREAD_COPY_THR_HANDLE(st, dt)   (dt) = (st)
+#elif defined(IRIX) || defined(OSF1) || defined(AIX) || defined(SOLARIS) \
+	|| defined(LINUX) || defined(__GNU__) || defined(__GLIBC__) \
+	|| defined(HPUX) || defined(FREEBSD) \
+	|| defined(NETBSD) || defined(OPENBSD) || defined(BSDI) \
+	|| defined(NTO) || defined(DARWIN) \
+	|| defined(UNIXWARE) || defined(RISCOS)	|| defined(SYMBIAN)
+#define _PT_PTHREAD_INVALIDATE_THR_HANDLE(t)  (t) = 0
+#define _PT_PTHREAD_THR_HANDLE_IS_INVALID(t)  (t) == 0
+#define _PT_PTHREAD_COPY_THR_HANDLE(st, dt)   (dt) = (st)
+#else 
+#error "pthreads is not supported for this architecture"
+#endif
+
+#if defined(_PR_DCETHREADS)
+#define _PT_PTHREAD_ATTR_INIT            pthread_attr_create
+#define _PT_PTHREAD_ATTR_DESTROY         pthread_attr_delete
+#define _PT_PTHREAD_CREATE(t, a, f, r)   pthread_create(t, a, f, r) 
+#define _PT_PTHREAD_KEY_CREATE           pthread_keycreate
+#define _PT_PTHREAD_ATTR_SETSCHEDPOLICY  pthread_attr_setsched
+#define _PT_PTHREAD_ATTR_GETSTACKSIZE(a, s) \
+                                     (*(s) = pthread_attr_getstacksize(*(a)), 0)
+#define _PT_PTHREAD_GETSPECIFIC(k, r) \
+		pthread_getspecific((k), (pthread_addr_t *) &(r))
+#elif defined(_PR_PTHREADS)
+#define _PT_PTHREAD_ATTR_INIT            pthread_attr_init
+#define _PT_PTHREAD_ATTR_DESTROY         pthread_attr_destroy
+#define _PT_PTHREAD_CREATE(t, a, f, r)   pthread_create(t, &a, f, r) 
+#define _PT_PTHREAD_KEY_CREATE           pthread_key_create
+#define _PT_PTHREAD_ATTR_SETSCHEDPOLICY  pthread_attr_setschedpolicy
+#define _PT_PTHREAD_ATTR_GETSTACKSIZE(a, s) pthread_attr_getstacksize(a, s)
+#define _PT_PTHREAD_GETSPECIFIC(k, r)    (r) = pthread_getspecific(k)
+#else
+#error "Cannot determine pthread strategy"
+#endif
+
+#if defined(_PR_DCETHREADS)
+#define _PT_PTHREAD_EXPLICIT_SCHED      _PT_PTHREAD_DEFAULT_SCHED
+#endif
+
+/*
+ * pthread_mutex_trylock returns different values in DCE threads and
+ * pthreads.
+ */
+#if defined(_PR_DCETHREADS)
+#define PT_TRYLOCK_SUCCESS 1
+#define PT_TRYLOCK_BUSY    0
+#else
+#define PT_TRYLOCK_SUCCESS 0
+#define PT_TRYLOCK_BUSY    EBUSY
+#endif
+
+/*
+ * These platforms don't have sigtimedwait()
+ */
+#if (defined(AIX) && !defined(AIX4_3_PLUS)) \
+	|| defined(LINUX) || defined(__GNU__)|| defined(__GLIBC__) \
+	|| defined(FREEBSD) || defined(NETBSD) || defined(OPENBSD) \
+	|| defined(BSDI) || defined(UNIXWARE) \
+	|| defined(DARWIN) || defined(SYMBIAN)
+#define PT_NO_SIGTIMEDWAIT
+#endif
+
+#if defined(OSF1)
+#define PT_PRIO_MIN            PRI_OTHER_MIN
+#define PT_PRIO_MAX            PRI_OTHER_MAX
+#elif defined(IRIX)
+#include <sys/sched.h>
+#define PT_PRIO_MIN            PX_PRIO_MIN
+#define PT_PRIO_MAX            PX_PRIO_MAX
+#elif defined(AIX)
+#include <sys/priv.h>
+#include <sys/sched.h>
+#ifndef PTHREAD_CREATE_JOINABLE
+#define PTHREAD_CREATE_JOINABLE     PTHREAD_CREATE_UNDETACHED
+#endif
+#define PT_PRIO_MIN            DEFAULT_PRIO
+#define PT_PRIO_MAX            DEFAULT_PRIO
+#elif defined(HPUX)
+
+#if defined(_PR_DCETHREADS)
+#define PT_PRIO_MIN            PRI_OTHER_MIN
+#define PT_PRIO_MAX            PRI_OTHER_MAX
+#else /* defined(_PR_DCETHREADS) */
+#include <sys/sched.h>
+#define PT_PRIO_MIN            sched_get_priority_min(SCHED_OTHER)
+#define PT_PRIO_MAX            sched_get_priority_max(SCHED_OTHER)
+#endif /* defined(_PR_DCETHREADS) */
+
+#elif defined(LINUX) || defined(__GNU__) || defined(__GLIBC__) \
+	|| defined(FREEBSD) || defined(SYMBIAN)
+#define PT_PRIO_MIN            sched_get_priority_min(SCHED_OTHER)
+#define PT_PRIO_MAX            sched_get_priority_max(SCHED_OTHER)
+#elif defined(NTO)
+/*
+ * Neutrino has functions that return the priority range but
+ * they return invalid numbers, so I just hard coded these here
+ * for now.  Jerry.Kirk@Nexarecorp.com
+ */
+#define PT_PRIO_MIN            0
+#define PT_PRIO_MAX            30
+#elif defined(SOLARIS)
+/*
+ * Solaris doesn't seem to have macros for the min/max priorities.
+ * The range of 0-127 is mentioned in the pthread_setschedparam(3T)
+ * man pages, and pthread_setschedparam indeed allows 0-127.  However,
+ * pthread_attr_setschedparam does not allow 0; it allows 1-127.
+ */
+#define PT_PRIO_MIN            1
+#define PT_PRIO_MAX            127
+#elif defined(OPENBSD)
+#define PT_PRIO_MIN            0
+#define PT_PRIO_MAX            31
+#elif defined(NETBSD) \
+	|| defined(BSDI) || defined(DARWIN) || defined(UNIXWARE) \
+	|| defined(RISCOS) /* XXX */
+#define PT_PRIO_MIN            0
+#define PT_PRIO_MAX            126
+#else
+#error "pthreads is not supported for this architecture"
+#endif
+
+/*
+ * The _PT_PTHREAD_YIELD function is called from a signal handler.
+ * Needed for garbage collection -- Look at PR_Suspend/PR_Resume
+ * implementation.
+ */
+#if defined(_PR_DCETHREADS)
+#define _PT_PTHREAD_YIELD()            	pthread_yield()
+#elif defined(OSF1)
+/*
+ * sched_yield can't be called from a signal handler.  Must use
+ * the _np version.
+ */
+#define _PT_PTHREAD_YIELD()            	pthread_yield_np()
+#elif defined(AIX)
+extern int (*_PT_aix_yield_fcn)();
+#define _PT_PTHREAD_YIELD()			(*_PT_aix_yield_fcn)()
+#elif defined(IRIX)
+#include <time.h>
+#define _PT_PTHREAD_YIELD() \
+    PR_BEGIN_MACRO               				\
+		struct timespec onemillisec = {0};		\
+		onemillisec.tv_nsec = 1000000L;			\
+        nanosleep(&onemillisec,NULL);			\
+    PR_END_MACRO
+#elif defined(HPUX) || defined(SOLARIS) \
+	|| defined(LINUX) || defined(__GNU__) || defined(__GLIBC__) \
+	|| defined(FREEBSD) || defined(NETBSD) || defined(OPENBSD) \
+	|| defined(BSDI) || defined(NTO) || defined(DARWIN) \
+	|| defined(UNIXWARE) || defined(RISCOS) || defined(SYMBIAN)
+#define _PT_PTHREAD_YIELD()            	sched_yield()
+#else
+#error "Need to define _PT_PTHREAD_YIELD for this platform"
+#endif
+
+#endif /* nspr_pth_defs_h_ */
diff --git a/nsprpub/pr/include/md/_qnx.cfg b/nsprpub/pr/include/md/_qnx.cfg
new file mode 100644
index 0000000000..a459b8cb7c
--- /dev/null
+++ b/nsprpub/pr/include/md/_qnx.cfg
@@ -0,0 +1,64 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_UNIX
+#define XP_UNIX
+#endif
+
+#ifndef QNX
+#define QNX
+#endif
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#undef  HAVE_LONG_LONG
+#undef	HAVE_ALIGNED_DOUBLES
+#undef	HAVE_ALIGNED_LONGLONGS
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   1
+#define PR_ALIGN_OF_INT     1
+#define PR_ALIGN_OF_LONG    1
+#define PR_ALIGN_OF_INT64   1
+#define PR_ALIGN_OF_FLOAT   1
+#define PR_ALIGN_OF_DOUBLE  1
+#define PR_ALIGN_OF_POINTER 1
+#define PR_ALIGN_OF_WORD    1
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+#define PR_WORDS_PER_DWORD_LOG2  1
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_qnx.h b/nsprpub/pr/include/md/_qnx.h
new file mode 100644
index 0000000000..d3bba6d069
--- /dev/null
+++ b/nsprpub/pr/include/md/_qnx.h
@@ -0,0 +1,182 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_qnx_defs_h___
+#define nspr_qnx_defs_h___
+
+/*
+** Internal configuration macros
+*/
+#define PR_LINKER_ARCH		"qnx"
+#define _PR_SI_SYSNAME		"QNX"
+#define _PR_SI_ARCHITECTURE	"x86"
+#define PR_DLL_SUFFIX		".so"
+
+#define _PR_VMBASE		0x30000000
+#define _PR_STACK_VMBASE	0x50000000
+#define _MD_DEFAULT_STACK_SIZE	65536L
+#define _MD_MMAP_FLAGS		MAP_PRIVATE
+
+#ifndef	HAVE_WEAK_IO_SYMBOLS
+#define	HAVE_WEAK_IO_SYMBOLS
+#endif
+
+#undef _PR_POLL_AVAILABLE
+#undef _PR_USE_POLL
+#define _PR_HAVE_SOCKADDR_LEN
+#define HAVE_BSD_FLOCK
+#define _PR_NO_LARGE_FILES
+#define _PR_STAT_HAS_ONLY_ST_ATIME
+
+#include <sys/select.h>
+
+#undef  HAVE_STACK_GROWING_UP
+#undef	HAVE_DLL
+#undef	USE_DLFCN
+#define NEED_STRFTIME_LOCK
+#define NEED_TIME_R
+#define _PR_NEED_STRCASECMP
+
+#ifndef HAVE_STRERROR
+#define HAVE_STRERROR
+#endif
+
+#define USE_SETJMP
+
+#include <setjmp.h>
+
+#define _SETJMP			setjmp
+#define _LONGJMP		longjmp
+#define _PR_CONTEXT_TYPE	jmp_buf
+#define _PR_NUM_GCREGS		_JBLEN
+#define _MD_GET_SP(_t)		(_t)->md.context[7]
+
+#define CONTEXT(_th)		((_th)->md.context)
+
+/*
+** Initialize the thread context preparing it to execute _main.
+*/
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)	\
+{							\
+    *status = PR_TRUE;					\
+    if(_SETJMP(CONTEXT(_thread))) (*_main)();		\
+    _MD_GET_SP(_thread) = (int) ((_sp) - 128);		\
+}
+
+#define _MD_SWITCH_CONTEXT(_thread)	\
+    if (!_SETJMP(CONTEXT(_thread))) {	\
+	(_thread)->md.errcode = errno;	\
+	_PR_Schedule();			\
+    }
+
+/*
+** Restore a thread context, saved by _MD_SWITCH_CONTEXT
+*/
+#define _MD_RESTORE_CONTEXT(_thread)	\
+{					\
+    errno = (_thread)->md.errcode;	\
+    _MD_SET_CURRENT_THREAD(_thread);	\
+    _LONGJMP(CONTEXT(_thread), 1);	\
+}
+
+/*
+** Machine-dependent (MD) data structures.
+*/
+struct _MDThread {
+    _PR_CONTEXT_TYPE context;
+    int id;
+    int errcode;
+};
+
+struct _MDThreadStack {
+    PRInt8 notused;
+};
+
+struct _MDLock {
+    PRInt8 notused;
+};
+
+struct _MDSemaphore {
+    PRInt8 notused;
+};
+
+struct _MDCVar {
+    PRInt8 notused;
+};
+
+struct _MDSegment {
+    PRInt8 notused;
+};
+
+/*
+** md-specific cpu structure field
+*/
+#define _PR_MD_MAX_OSFD		FD_SETSIZE
+
+struct _MDCPU_Unix {
+    PRCList ioQ;
+    PRUint32 ioq_timeout;
+    PRInt32 ioq_max_osfd;
+    PRInt32 ioq_osfd_cnt;
+#ifndef _PR_USE_POLL
+    fd_set fd_read_set, fd_write_set, fd_exception_set;
+    PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD], fd_write_cnt[_PR_MD_MAX_OSFD], fd_exception_cnt[_PR_MD_MAX_OSFD];
+#else
+    struct pollfd *ioq_pollfds;
+    int ioq_pollfds_size;
+#endif
+};
+
+#define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
+#define _PR_ADD_TO_IOQ(_pq, _cpu)	PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
+#define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
+#define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
+#define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
+#define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
+#define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
+#define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
+#define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
+#define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
+#define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
+#define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
+#define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)
+
+#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32
+
+struct _MDCPU {
+	struct _MDCPU_Unix md_unix;
+};
+
+#define _MD_INIT_LOCKS()
+#define _MD_NEW_LOCK(lock)		PR_SUCCESS
+#define _MD_FREE_LOCK(lock)
+#define _MD_LOCK(lock)
+#define _MD_UNLOCK(lock)
+#define _MD_INIT_IO()
+#define _MD_IOQ_LOCK()
+#define _MD_IOQ_UNLOCK()
+
+#define _MD_INTERVAL_USE_GTOD
+#define _MD_EARLY_INIT			_MD_EarlyInit
+#define _MD_FINAL_INIT			_PR_UnixInit
+#define _MD_INIT_RUNNING_CPU(cpu)	_MD_unix_init_running_cpu(cpu)
+#define _MD_INIT_THREAD			_MD_InitializeThread
+#define _MD_EXIT_THREAD(thread)
+#define	_MD_SUSPEND_THREAD(thread)
+#define	_MD_RESUME_THREAD(thread)
+#define _MD_CLEAN_THREAD(_thread)
+
+/*
+** We wrapped the select() call.  _MD_SELECT refers to the built-in,
+** unwrapped version.
+*/
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/select.h>
+#define _MD_SELECT		select
+
+#define SA_RESTART 0
+
+#endif /* nspr_qnx_defs_h___ */
diff --git a/nsprpub/pr/include/md/_riscos.cfg b/nsprpub/pr/include/md/_riscos.cfg
new file mode 100644
index 0000000000..c7adf2e135
--- /dev/null
+++ b/nsprpub/pr/include/md/_riscos.cfg
@@ -0,0 +1,111 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_UNIX
+#define XP_UNIX
+#endif
+
+#ifndef RISCOS
+#define RISCOS
+#endif
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#ifndef HAVE_LONG_LONG
+#define HAVE_LONG_LONG
+#endif
+#undef  HAVE_ALIGNED_DOUBLES
+#undef  HAVE_ALIGNED_LONGLONGS
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+#define PR_WORDS_PER_DWORD_LOG2  1
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE		PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT 	PR_BYTES_PER_SHORT
+#define BYTES_PER_INT 		PR_BYTES_PER_INT
+#define BYTES_PER_INT64		PR_BYTES_PER_INT64
+#define BYTES_PER_LONG		PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT		PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE	PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD		PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD		PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE		PR_BITS_PER_BYTE
+#define BITS_PER_SHORT		PR_BITS_PER_SHORT
+#define BITS_PER_INT		PR_BITS_PER_INT
+#define BITS_PER_INT64		PR_BITS_PER_INT64
+#define BITS_PER_LONG		PR_BITS_PER_LONG
+#define BITS_PER_FLOAT		PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE		PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD		PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2	PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2	PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2	PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2	PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2	PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2	PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2 	PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2	PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT		PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT		PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG		PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64		PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT		PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE		PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER	PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD		PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2	PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2	PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2	PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_riscos.h b/nsprpub/pr/include/md/_riscos.h
new file mode 100644
index 0000000000..f62d668d1c
--- /dev/null
+++ b/nsprpub/pr/include/md/_riscos.h
@@ -0,0 +1,176 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_riscos_defs_h___
+#define nspr_riscos_defs_h___
+
+/*
+** Internal configuration macros
+*/
+#define PR_LINKER_ARCH		"riscos"
+#define _PR_SI_SYSNAME		"RISCOS"
+#define _PR_SI_ARCHITECTURE	"arm"
+#define PR_DLL_SUFFIX		".so"
+
+#define _PR_POLL_AVAILABLE
+#define _PR_USE_POLL
+#define _PR_HAVE_SOCKADDR_LEN
+#undef HAVE_BSD_FLOCK
+#define _PR_NO_LARGE_FILES
+#define _PR_STAT_HAS_ONLY_ST_ATIME
+#define _PR_HAVE_POSIX_SEMAPHORES
+
+#include <sys/select.h>
+#include <sys/poll.h>
+#include <kernel.h>
+
+
+#undef  HAVE_STACK_GROWING_UP
+#define HAVE_DLL
+#define USE_DLFCN
+#define NEED_STRFTIME_LOCK
+#define NEED_TIME_R
+#define PT_NO_SIGTIMEDWAIT
+
+#ifndef HAVE_STRERROR
+#define HAVE_STRERROR
+#endif
+
+#define USE_SETJMP
+
+#include <setjmp.h>
+
+#define _SETJMP			setjmp
+#define _LONGJMP		longjmp
+#define _PR_CONTEXT_TYPE	jmp_buf
+#define _PR_NUM_GCREGS		_JBLEN
+#define _MD_GET_SP(_t)		(_t)->md.context[7]
+
+#define CONTEXT(_th)		((_th)->md.context)
+
+
+/*
+** Initialize the thread context preparing it to execute _main.
+*/
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)	\
+{							\
+    *status = PR_TRUE;					\
+    if(_SETJMP(CONTEXT(_thread))) (*_main)();		\
+    _MD_GET_SP(_thread) = (int) ((_sp) - 128);		\
+}
+
+#define _MD_SWITCH_CONTEXT(_thread)	\
+    if (!_SETJMP(CONTEXT(_thread))) {	\
+	(_thread)->md.errcode = errno;	\
+	_PR_Schedule();			\
+    }
+
+/*
+** Restore a thread context, saved by _MD_SWITCH_CONTEXT
+*/
+#define _MD_RESTORE_CONTEXT(_thread)	\
+{					\
+    errno = (_thread)->md.errcode;	\
+    _MD_SET_CURRENT_THREAD(_thread);	\
+    _LONGJMP(CONTEXT(_thread), 1);	\
+}
+
+/*
+** Machine-dependent (MD) data structures.
+*/
+struct _MDThread {
+    _PR_CONTEXT_TYPE context;
+    int id;
+    int errcode;
+};
+
+struct _MDThreadStack {
+    PRInt8 notused;
+};
+
+struct _MDLock {
+    PRInt8 notused;
+};
+
+struct _MDSemaphore {
+    PRInt8 notused;
+};
+
+struct _MDCVar {
+    PRInt8 notused;
+};
+
+struct _MDSegment {
+    PRInt8 notused;
+};
+
+/*
+** md-specific cpu structure field
+*/
+#define _PR_MD_MAX_OSFD		FD_SETSIZE
+
+struct _MDCPU_Unix {
+    PRCList ioQ;
+    PRUint32 ioq_timeout;
+    PRInt32 ioq_max_osfd;
+    PRInt32 ioq_osfd_cnt;
+#ifndef _PR_USE_POLL
+    fd_set fd_read_set, fd_write_set, fd_exception_set;
+    PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD], fd_write_cnt[_PR_MD_MAX_OSFD], fd_exception_cnt[_PR_MD_MAX_OSFD];
+#else
+    struct pollfd *ioq_pollfds;
+    int ioq_pollfds_size;
+#endif
+};
+
+#define _PR_IOQ(_cpu)	/*	*/	((_cpu)->md.md_unix.ioQ)
+#define _PR_ADD_TO_IOQ(_pq, _cpu)	PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
+#define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
+#define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
+#define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
+#define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
+#define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
+#define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
+#define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
+#define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
+#define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
+#define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
+#define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)
+
+#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32
+
+struct _MDCPU {
+	struct _MDCPU_Unix md_unix;
+};
+
+#define _MD_INIT_LOCKS()
+#define _MD_NEW_LOCK(lock)		PR_SUCCESS
+#define _MD_FREE_LOCK(lock)
+#define _MD_LOCK(lock)
+#define _MD_UNLOCK(lock)
+#define _MD_INIT_IO()
+#define _MD_IOQ_LOCK()
+#define _MD_IOQ_UNLOCK()
+
+#define _MD_INTERVAL_USE_GTOD
+#define _MD_EARLY_INIT			_MD_EarlyInit
+#define _MD_FINAL_INIT			_PR_UnixInit
+#define _MD_INIT_RUNNING_CPU(cpu)	_MD_unix_init_running_cpu(cpu)
+#define _MD_INIT_THREAD			_MD_InitializeThread
+#define _MD_EXIT_THREAD(thread)
+#define	_MD_SUSPEND_THREAD(thread)
+#define	_MD_RESUME_THREAD(thread)
+#define _MD_CLEAN_THREAD(_thread)
+
+/*
+** We wrapped the select() call.  _MD_SELECT refers to the built-in,
+** unwrapped version.
+*/
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/select.h>
+#define _MD_SELECT		select
+
+#endif /* nspr_riscos_defs_h___ */
diff --git a/nsprpub/pr/include/md/_scoos.cfg b/nsprpub/pr/include/md/_scoos.cfg
new file mode 100644
index 0000000000..70cc6b7109
--- /dev/null
+++ b/nsprpub/pr/include/md/_scoos.cfg
@@ -0,0 +1,108 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_UNIX
+#define XP_UNIX
+#endif
+
+#ifndef SCO
+#define SCO
+#endif
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#undef	HAVE_LONG_LONG
+#undef	HAVE_ALIGNED_DOUBLES
+#undef	HAVE_ALIGNED_LONGLONGS
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+
+#define _PR_POLL_BACKCOMPAT
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE		PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT 	PR_BYTES_PER_SHORT
+#define BYTES_PER_INT 		PR_BYTES_PER_INT
+#define BYTES_PER_INT64		PR_BYTES_PER_INT64
+#define BYTES_PER_LONG		PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT		PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE	PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD		PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD		PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE		PR_BITS_PER_BYTE
+#define BITS_PER_SHORT		PR_BITS_PER_SHORT
+#define BITS_PER_INT		PR_BITS_PER_INT
+#define BITS_PER_INT64		PR_BITS_PER_INT64
+#define BITS_PER_LONG		PR_BITS_PER_LONG
+#define BITS_PER_FLOAT		PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE		PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD		PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2	PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2	PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2	PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2	PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2	PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2	PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2 	PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2	PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT		PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT		PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG		PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64		PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT		PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE		PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER	PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD		PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2	PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2	PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2	PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_scoos.h b/nsprpub/pr/include/md/_scoos.h
new file mode 100644
index 0000000000..c444dcd9ba
--- /dev/null
+++ b/nsprpub/pr/include/md/_scoos.h
@@ -0,0 +1,171 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_scoos5_defs_h___
+#define nspr_scoos5_defs_h___
+
+/*
+ * Internal configuration macros
+ */
+
+#define PR_LINKER_ARCH	"scoos5"
+#define PR_DLL_SUFFIX		".so"
+
+#define _PR_SI_SYSNAME      "SCO"
+#define _PR_SI_ARCHITECTURE "x86"
+#define _PR_STACK_VMBASE    0x50000000
+
+#define _MD_DEFAULT_STACK_SIZE	65536L
+#define _MD_MMAP_FLAGS          MAP_PRIVATE
+
+#undef  HAVE_STACK_GROWING_UP
+#define	HAVE_DLL
+#define	USE_DLFCN
+
+#if !defined (HAVE_STRERROR)
+#define HAVE_STRERROR
+#endif
+
+#ifndef	HAVE_WEAK_IO_SYMBOLS
+#define	HAVE_WEAK_IO_SYMBOLS
+#endif
+
+#define _PR_POLL_AVAILABLE
+#define _PR_USE_POLL
+#define _PR_NO_LARGE_FILES
+#define _PR_STAT_HAS_ONLY_ST_ATIME
+
+#define NEED_STRFTIME_LOCK
+#define NEED_TIME_R
+#define _PR_RECV_BROKEN /* recv doesn't work on Unix Domain Sockets */
+
+#define USE_SETJMP
+
+#ifdef _PR_LOCAL_THREADS_ONLY
+#include <setjmp.h>
+
+#define _MD_GET_SP(_t)  (_t)->md.jb[4]
+#define PR_NUM_GCREGS	_SIGJBLEN
+#define PR_CONTEXT_TYPE	sigjmp_buf
+
+#define CONTEXT(_th) ((_th)->md.jb)
+
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)				\
+{								  									\
+	*status = PR_TRUE;												\
+    if (sigsetjmp(CONTEXT(_thread),1)) {				  			\
+		(*_main)(); 												\
+    }								  								\
+    _MD_GET_SP(_thread) = (int) ((_sp) - 64);	\
+}
+
+#define _MD_SWITCH_CONTEXT(_thread)  								\
+    if (!sigsetjmp(CONTEXT(_thread), 1)) { 							\
+		(_thread)->md.errcode = errno;  							\
+		_PR_Schedule();		     									\
+    }
+
+/*
+** Restore a thread context, saved by _MD_SWITCH_CONTEXT
+*/
+#define _MD_RESTORE_CONTEXT(_thread)								\
+{				     												\
+    errno = (_thread)->osErrorCode;	     							\
+	_MD_SET_CURRENT_THREAD(_thread);								\
+    siglongjmp(CONTEXT(_thread), 1);    							\
+}
+
+#endif /* _PR_LOCAL_THREADS_ONLY */
+
+struct _MDThread {
+    jmp_buf jb;
+    int id;
+    int errcode;
+};
+
+struct _MDThreadStack {
+    PRInt8 notused;
+};
+
+struct _MDLock {
+    PRInt8 notused;
+};
+
+struct _MDSemaphore {
+    PRInt8 notused;
+};
+
+struct _MDCVar {
+    PRInt8 notused;
+};
+
+struct _MDSegment {
+    PRInt8 notused;
+};
+
+/*
+ * md-specific cpu structure field
+ */
+#define _PR_MD_MAX_OSFD FD_SETSIZE
+
+struct _MDCPU_Unix {
+    PRCList ioQ;
+    PRUint32 ioq_timeout;
+    PRInt32 ioq_max_osfd;
+    PRInt32 ioq_osfd_cnt;
+#ifndef _PR_USE_POLL
+    fd_set fd_read_set, fd_write_set, fd_exception_set;
+    PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
+				fd_exception_cnt[_PR_MD_MAX_OSFD];
+#else
+	struct pollfd *ioq_pollfds;
+	int ioq_pollfds_size;
+#endif	/* _PR_USE_POLL */
+};
+
+#define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
+#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
+#define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
+#define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
+#define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
+#define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
+#define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
+#define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
+#define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
+#define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
+#define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
+#define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
+#define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)
+
+#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32
+
+struct _MDCPU {
+    struct _MDCPU_Unix md_unix;
+};
+
+#define _MD_INIT_LOCKS()
+#define _MD_NEW_LOCK(lock) PR_SUCCESS
+#define _MD_FREE_LOCK(lock)
+#define _MD_LOCK(lock)
+#define _MD_UNLOCK(lock)
+#define _MD_INIT_IO()
+#define _MD_IOQ_LOCK()
+#define _MD_IOQ_UNLOCK()
+
+#define _MD_EARLY_INIT          	_MD_EarlyInit
+#define _MD_FINAL_INIT				_PR_UnixInit
+#define _MD_INIT_RUNNING_CPU(cpu) 	_MD_unix_init_running_cpu(cpu)
+#define _MD_INIT_THREAD         	_MD_InitializeThread
+#define _MD_EXIT_THREAD(thread)
+#define	_MD_SUSPEND_THREAD(thread)
+#define	_MD_RESUME_THREAD(thread)
+#define _MD_CLEAN_THREAD(_thread)
+
+#define _MD_INTERVAL_USE_GTOD
+
+#define _MD_SELECT		_select
+#define _MD_POLL		_poll
+
+#endif /* nspr_scoos5_defs_h___ */
diff --git a/nsprpub/pr/include/md/_solaris.cfg b/nsprpub/pr/include/md/_solaris.cfg
new file mode 100644
index 0000000000..674563747a
--- /dev/null
+++ b/nsprpub/pr/include/md/_solaris.cfg
@@ -0,0 +1,171 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_UNIX
+#define XP_UNIX
+#endif
+
+#ifndef SOLARIS
+#define SOLARIS
+#endif
+
+#define PR_AF_INET6 26  /* same as AF_INET6 */
+
+#if defined(sparc) || defined(__sparc)
+#undef  IS_LITTLE_ENDIAN
+#define IS_BIG_ENDIAN 1
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_DOUBLE  8
+#if defined(__sparcv9)
+#define IS_64
+#endif
+#elif defined(__x86_64)
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_DOUBLE  8
+#define IS_64
+#elif defined(i386) || defined(__i386)
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_DOUBLE  4
+#else
+#error unknown processor
+#endif
+
+#ifdef IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   8
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+#define PR_BYTES_PER_WORD_LOG2   3
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    64
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   6
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_POINTER 8
+
+#else /* IS_64 */
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_POINTER 4
+
+#endif /* IS_64 */
+
+#ifndef HAVE_LONG_LONG
+#define	HAVE_LONG_LONG
+#endif
+#define	HAVE_ALIGNED_DOUBLES
+#define	HAVE_ALIGNED_LONGLONGS
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE		PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT 	PR_BYTES_PER_SHORT
+#define BYTES_PER_INT 		PR_BYTES_PER_INT
+#define BYTES_PER_INT64		PR_BYTES_PER_INT64
+#define BYTES_PER_LONG		PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT		PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE	PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD		PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD		PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE		PR_BITS_PER_BYTE
+#define BITS_PER_SHORT		PR_BITS_PER_SHORT
+#define BITS_PER_INT		PR_BITS_PER_INT
+#define BITS_PER_INT64		PR_BITS_PER_INT64
+#define BITS_PER_LONG		PR_BITS_PER_LONG
+#define BITS_PER_FLOAT		PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE		PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD		PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2	PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2	PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2	PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2	PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2	PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2	PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2 	PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2	PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT		PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT		PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG		PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64		PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT		PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE		PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER	PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD		PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2	PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2	PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2	PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* ifndef nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_solaris.h b/nsprpub/pr/include/md/_solaris.h
new file mode 100644
index 0000000000..495ce4cc77
--- /dev/null
+++ b/nsprpub/pr/include/md/_solaris.h
@@ -0,0 +1,493 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_solaris_defs_h___
+#define nspr_solaris_defs_h___
+
+/*
+ * Internal configuration macros
+ */
+
+#define PR_LINKER_ARCH	"solaris"
+#define _PR_SI_SYSNAME	"SOLARIS"
+#ifdef sparc
+#define _PR_SI_ARCHITECTURE	"sparc"
+#elif defined(__x86_64)
+#define _PR_SI_ARCHITECTURE	"x86-64"
+#elif defined(i386)
+#define _PR_SI_ARCHITECTURE	"x86"
+#else
+#error unknown processor
+#endif
+#define PR_DLL_SUFFIX		".so"
+
+#define _PR_VMBASE		0x30000000
+#define _PR_STACK_VMBASE	0x50000000
+#define _MD_DEFAULT_STACK_SIZE	(2*65536L)
+#define _MD_MMAP_FLAGS          MAP_SHARED
+
+#undef  HAVE_STACK_GROWING_UP
+
+#ifndef HAVE_WEAK_IO_SYMBOLS
+#define	HAVE_WEAK_IO_SYMBOLS
+#endif
+
+#undef	HAVE_WEAK_MALLOC_SYMBOLS
+#define	HAVE_DLL
+#define	USE_DLFCN
+#define NEED_STRFTIME_LOCK
+
+/*
+ * Intel x86 has atomic instructions.
+ *
+ * Sparc v8 does not have instructions to efficiently implement
+ * atomic increment/decrement operations.  We use the default
+ * atomic routine implementation in pratom.c.
+ *
+ * 64-bit Solaris requires sparc v9, which has atomic instructions.
+ */
+#if defined(i386) || defined(IS_64)
+#define _PR_HAVE_ATOMIC_OPS
+#endif
+
+#define _PR_POLL_AVAILABLE
+#define _PR_USE_POLL
+#define _PR_STAT_HAS_ST_ATIM
+#ifdef SOLARIS2_5
+#define _PR_HAVE_SYSV_SEMAPHORES
+#define PR_HAVE_SYSV_NAMED_SHARED_MEMORY
+#else
+#define _PR_HAVE_POSIX_SEMAPHORES
+#define PR_HAVE_POSIX_NAMED_SHARED_MEMORY
+#endif
+#define _PR_HAVE_GETIPNODEBYNAME
+#define _PR_HAVE_GETIPNODEBYADDR
+#define _PR_HAVE_GETADDRINFO
+#define _PR_INET6_PROBE
+#define _PR_ACCEPT_INHERIT_NONBLOCK
+#ifdef _PR_INET6
+#define _PR_HAVE_INET_NTOP
+#else
+#define AF_INET6 26
+struct addrinfo {
+    int ai_flags;
+    int ai_family;
+    int ai_socktype;
+    int ai_protocol;
+    size_t ai_addrlen;
+    char *ai_canonname;
+    struct sockaddr *ai_addr;
+    struct addrinfo *ai_next;
+};
+#define AI_CANONNAME 0x0010
+#define AI_V4MAPPED 0x0001 
+#define AI_ALL      0x0002
+#define AI_ADDRCONFIG   0x0004
+#define _PR_HAVE_MD_SOCKADDR_IN6
+/* isomorphic to struct in6_addr on Solaris 8 */
+struct _md_in6_addr {
+    union {
+        PRUint8  _S6_u8[16];
+        PRUint32 _S6_u32[4];
+        PRUint32 __S6_align;
+    } _S6_un;
+};
+/* isomorphic to struct sockaddr_in6 on Solaris 8 */
+struct _md_sockaddr_in6 {
+    PRUint16 sin6_family;
+    PRUint16 sin6_port;
+    PRUint32 sin6_flowinfo;
+    struct _md_in6_addr sin6_addr;
+    PRUint32 sin6_scope_id;
+    PRUint32 __sin6_src_id;
+};
+#endif
+#if defined(_PR_PTHREADS)
+#define _PR_HAVE_GETHOST_R
+#define _PR_HAVE_GETHOST_R_POINTER
+#endif
+
+#include "prinrval.h"
+#define _MD_INTERVAL_INIT()
+NSPR_API(PRIntervalTime) _MD_Solaris_GetInterval(void);
+#define _MD_GET_INTERVAL                  _MD_Solaris_GetInterval
+NSPR_API(PRIntervalTime) _MD_Solaris_TicksPerSecond(void);
+#define _MD_INTERVAL_PER_SEC              _MD_Solaris_TicksPerSecond
+
+#if defined(_PR_HAVE_ATOMIC_OPS)
+/*
+** Atomic Operations
+*/
+#define _MD_INIT_ATOMIC()
+
+NSPR_API(PRInt32) _MD_AtomicIncrement(PRInt32 *val);
+#define _MD_ATOMIC_INCREMENT _MD_AtomicIncrement
+
+NSPR_API(PRInt32) _MD_AtomicAdd(PRInt32 *ptr, PRInt32 val);
+#define _MD_ATOMIC_ADD _MD_AtomicAdd
+
+NSPR_API(PRInt32) _MD_AtomicDecrement(PRInt32 *val);
+#define _MD_ATOMIC_DECREMENT _MD_AtomicDecrement
+
+NSPR_API(PRInt32) _MD_AtomicSet(PRInt32 *val, PRInt32 newval);
+#define _MD_ATOMIC_SET _MD_AtomicSet
+#endif /* _PR_HAVE_ATOMIC_OPS */
+
+#if defined(_PR_PTHREADS)
+
+NSPR_API(void)		_MD_EarlyInit(void);
+
+#define _MD_EARLY_INIT		_MD_EarlyInit
+#define _MD_FINAL_INIT		_PR_UnixInit
+
+#else /* _PR_PTHREADS */
+
+/*
+ * _PR_LOCAL_THREADS_ONLY implementation on Solaris
+ */
+
+#include "prthread.h"
+
+#include <errno.h>
+#include <ucontext.h>
+#include <sys/stack.h>
+#include <synch.h>
+
+/*
+** Initialization Related definitions
+*/
+
+NSPR_API(void)				_MD_EarlyInit(void);
+NSPR_API(void)				_MD_SolarisInit();
+#define _MD_EARLY_INIT		_MD_EarlyInit
+#define _MD_FINAL_INIT		_MD_SolarisInit
+#define	_MD_INIT_THREAD		_MD_InitializeThread
+
+#ifdef USE_SETJMP
+
+#include <setjmp.h>
+
+#define _PR_CONTEXT_TYPE	jmp_buf
+
+#ifdef sparc
+#define _MD_GET_SP(_t)		(_t)->md.context[2]
+#else
+#define _MD_GET_SP(_t)		(_t)->md.context[4]
+#endif
+
+#define PR_NUM_GCREGS		_JBLEN
+#define CONTEXT(_thread)	(_thread)->md.context
+
+#else  /* ! USE_SETJMP */
+
+#ifdef sparc
+#define	_PR_CONTEXT_TYPE	ucontext_t
+#define _MD_GET_SP(_t)		(_t)->md.context.uc_mcontext.gregs[REG_SP]
+/*
+** Sparc's use register windows. the _MD_GetRegisters for the sparc's
+** doesn't actually store anything into the argument buffer; instead the
+** register windows are homed to the stack. I assume that the stack
+** always has room for the registers to spill to...
+*/
+#define PR_NUM_GCREGS		0
+#else
+#define _PR_CONTEXT_TYPE	unsigned int edi; sigset_t oldMask, blockMask; ucontext_t
+#define _MD_GET_SP(_t)		(_t)->md.context.uc_mcontext.gregs[USP]
+#define PR_NUM_GCREGS		_JBLEN
+#endif
+
+#define CONTEXT(_thread)	(&(_thread)->md.context)
+
+#endif /* ! USE_SETJMP */
+
+#include <time.h>
+/* 
+ * Because clock_gettime() on Solaris/x86 always generates a
+ * segmentation fault, we use an emulated version _pr_solx86_clock_gettime(),
+ * which is implemented using gettimeofday().
+ */
+#ifdef i386
+#define GETTIME(tt) _pr_solx86_clock_gettime(CLOCK_REALTIME, (tt))
+#else
+#define GETTIME(tt) clock_gettime(CLOCK_REALTIME, (tt))
+#endif  /* i386 */
+
+#define _MD_SAVE_ERRNO(_thread)			(_thread)->md.errcode = errno;
+#define _MD_RESTORE_ERRNO(_thread)		errno = (_thread)->md.errcode;
+
+#ifdef sparc
+
+#ifdef USE_SETJMP
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)	      \
+    PR_BEGIN_MACRO				      \
+	int *context = (_thread)->md.context;	      \
+    *status = PR_TRUE;              \
+	(void) setjmp(context);			      \
+	(_thread)->md.context[1] = (int) ((_sp) - 64); \
+	(_thread)->md.context[2] = (int) _main;	      \
+	(_thread)->md.context[3] = (int) _main + 4; \
+    _thread->no_sched = 0; \
+    PR_END_MACRO
+
+#define _MD_SWITCH_CONTEXT(_thread)    \
+    if (!setjmp(CONTEXT(_thread))) { \
+	_MD_SAVE_ERRNO(_thread)    \
+	_MD_SET_LAST_THREAD(_thread);	 \
+    _MD_SET_CURRENT_THREAD(_thread);	 \
+	_PR_Schedule();		     \
+    }
+
+#define _MD_RESTORE_CONTEXT(_newThread)	    \
+{				     \
+	_MD_RESTORE_ERRNO(_newThread)	    \
+	_MD_SET_CURRENT_THREAD(_newThread); \
+    longjmp(CONTEXT(_newThread), 1);    \
+}
+
+#else
+/*
+** Initialize the thread context preparing it to execute _main.
+*/
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)					\
+    PR_BEGIN_MACRO				      									\
+    ucontext_t *uc = CONTEXT(_thread);									\
+    *status = PR_TRUE;													\
+    getcontext(uc);														\
+    uc->uc_stack.ss_sp = (char *) ((unsigned long)(_sp - WINDOWSIZE - SA(MINFRAME)) & 0xfffffff8);	\
+    uc->uc_stack.ss_size = _thread->stack->stackSize; 					\
+    uc->uc_stack.ss_flags = 0; 				/* ? */		        		\
+    uc->uc_mcontext.gregs[REG_SP] = (unsigned int) uc->uc_stack.ss_sp;	\
+    uc->uc_mcontext.gregs[REG_PC] = (unsigned int) _main;				\
+    uc->uc_mcontext.gregs[REG_nPC] = (unsigned int) ((char*)_main)+4;	\
+    uc->uc_flags = UC_ALL;												\
+    _thread->no_sched = 0;												\
+    PR_END_MACRO
+
+/*
+** Switch away from the current thread context by saving its state and
+** calling the thread scheduler. Reload cpu when we come back from the
+** context switch because it might have changed.
+*/
+#define _MD_SWITCH_CONTEXT(_thread)    				\
+    PR_BEGIN_MACRO                     				\
+		if (!getcontext(CONTEXT(_thread))) { 		\
+			_MD_SAVE_ERRNO(_thread);    			\
+			_MD_SET_LAST_THREAD(_thread);	 		\
+			_PR_Schedule();			 				\
+		}					 						\
+    PR_END_MACRO
+
+/*
+** Restore a thread context that was saved by _MD_SWITCH_CONTEXT or
+** initialized by _MD_INIT_CONTEXT.
+*/
+#define _MD_RESTORE_CONTEXT(_newThread)	    				\
+    PR_BEGIN_MACRO			    							\
+    	ucontext_t *uc = CONTEXT(_newThread); 				\
+    	uc->uc_mcontext.gregs[11] = 1;     					\
+		_MD_RESTORE_ERRNO(_newThread);	    				\
+		_MD_SET_CURRENT_THREAD(_newThread); 				\
+    	setcontext(uc);		       							\
+    PR_END_MACRO
+#endif
+
+#else  /* x86 solaris */
+
+#ifdef USE_SETJMP
+
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \
+    PR_BEGIN_MACRO \
+    *status = PR_TRUE; \
+    if (setjmp(CONTEXT(_thread))) _main(); \
+    _MD_GET_SP(_thread) = (int) ((_sp) - 64); \
+    PR_END_MACRO
+
+#define _MD_SWITCH_CONTEXT(_thread) \
+    if (!setjmp(CONTEXT(_thread))) { \
+        _MD_SAVE_ERRNO(_thread) \
+        _PR_Schedule();	\
+    }
+
+#define _MD_RESTORE_CONTEXT(_newThread) \
+{ \
+    _MD_RESTORE_ERRNO(_newThread) \
+    _MD_SET_CURRENT_THREAD(_newThread); \
+    longjmp(CONTEXT(_newThread), 1); \
+}
+
+#else /* USE_SETJMP */
+
+#define WINDOWSIZE		0
+ 
+int getedi(void);
+void setedi(int);
+ 
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status)	      \
+	PR_BEGIN_MACRO					\
+	ucontext_t *uc = CONTEXT(_thread);		\
+        *status = PR_TRUE;              \
+	getcontext(uc);					\
+	/* Force sp to be double aligned! */		\
+    	uc->uc_mcontext.gregs[USP] = (int) ((unsigned long)(_sp - WINDOWSIZE - SA(MINFRAME)) & 0xfffffff8);	\
+	uc->uc_mcontext.gregs[PC] = (int) _main;	\
+	(_thread)->no_sched = 0; \
+	PR_END_MACRO
+
+/* getcontext() may return 1, contrary to what the man page says */
+#define _MD_SWITCH_CONTEXT(_thread)			\
+	PR_BEGIN_MACRO					\
+	ucontext_t *uc = CONTEXT(_thread);		\
+	PR_ASSERT(_thread->no_sched);			\
+	sigfillset(&((_thread)->md.blockMask));		\
+	sigprocmask(SIG_BLOCK, &((_thread)->md.blockMask),	\
+		&((_thread)->md.oldMask));		\
+	(_thread)->md.edi = getedi();			\
+	if (! getcontext(uc)) {				\
+		sigprocmask(SIG_SETMASK, &((_thread)->md.oldMask), NULL); \
+		uc->uc_mcontext.gregs[EDI] = (_thread)->md.edi;	\
+		_MD_SAVE_ERRNO(_thread)    		\
+	        _MD_SET_LAST_THREAD(_thread);	        \
+		_PR_Schedule();				\
+	} else {					\
+		sigprocmask(SIG_SETMASK, &((_thread)->md.oldMask), NULL); \
+		setedi((_thread)->md.edi);		\
+		PR_ASSERT(_MD_LAST_THREAD() !=_MD_CURRENT_THREAD()); \
+		_MD_LAST_THREAD()->no_sched = 0;	\
+	}						\
+	PR_END_MACRO
+
+/*
+** Restore a thread context, saved by _PR_SWITCH_CONTEXT
+*/
+#define _MD_RESTORE_CONTEXT(_newthread)			\
+	PR_BEGIN_MACRO					\
+	ucontext_t *uc = CONTEXT(_newthread);		\
+	uc->uc_mcontext.gregs[EAX] = 1;			\
+	_MD_RESTORE_ERRNO(_newthread)  			\
+	_MD_SET_CURRENT_THREAD(_newthread);		\
+	(_newthread)->no_sched = 1;			\
+	setcontext(uc);					\
+	PR_END_MACRO
+#endif /* USE_SETJMP */
+
+#endif /* sparc */
+
+struct _MDLock {
+	PRInt8 notused;
+};
+
+struct _MDCVar {
+	PRInt8 notused;
+};
+
+struct _MDSemaphore {
+	PRInt8 notused;
+};
+
+struct _MDThread {
+    _PR_CONTEXT_TYPE context;
+    int errcode;
+    int id;
+};
+
+struct _MDThreadStack {
+    PRInt8 notused;
+};
+
+struct _MDSegment {
+    PRInt8 notused;
+};
+
+/*
+ * md-specific cpu structure field
+ */
+#define _PR_MD_MAX_OSFD FD_SETSIZE
+
+struct _MDCPU_Unix {
+    PRCList ioQ;
+    PRUint32 ioq_timeout;
+    PRInt32 ioq_max_osfd;
+    PRInt32 ioq_osfd_cnt;
+#ifndef _PR_USE_POLL
+    fd_set fd_read_set, fd_write_set, fd_exception_set;
+    PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
+				fd_exception_cnt[_PR_MD_MAX_OSFD];
+#else
+	struct pollfd *ioq_pollfds;
+	int ioq_pollfds_size;
+#endif	/* _PR_USE_POLL */
+};
+
+#define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
+#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
+#define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
+#define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
+#define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
+#define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
+#define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
+#define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
+#define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
+#define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
+#define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
+#define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
+#define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)
+
+#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32
+
+struct _MDCPU {
+	struct _MDCPU_Unix md_unix;
+};
+
+#define _MD_INIT_LOCKS()
+#define _MD_NEW_LOCK(lock)				PR_SUCCESS
+#define _MD_FREE_LOCK(lock)
+#define _MD_LOCK(lock)
+#define _MD_UNLOCK(lock)
+#define _MD_INIT_IO()
+#define _MD_IOQ_LOCK()
+#define _MD_IOQ_UNLOCK()
+
+#define _MD_INIT_RUNNING_CPU(cpu)		_MD_unix_init_running_cpu(cpu)
+#define _MD_INIT_THREAD					_MD_InitializeThread
+#define _MD_EXIT_THREAD(thread)
+#define _MD_SUSPEND_THREAD(thread)
+#define _MD_RESUME_THREAD(thread)
+#define _MD_CLEAN_THREAD(_thread)
+
+extern PRStatus _MD_WAIT(struct PRThread *, PRIntervalTime timeout);
+extern PRStatus _MD_WAKEUP_WAITER(struct PRThread *);
+extern void     _MD_YIELD(void);
+extern PRStatus _MD_InitializeThread(PRThread *thread);
+extern void     _MD_SET_PRIORITY(struct _MDThread *thread,
+	PRThreadPriority newPri);
+extern PRStatus _MD_CREATE_THREAD(PRThread *thread, void (*start) (void *),
+	PRThreadPriority priority, PRThreadScope scope, PRThreadState state,
+        PRUint32 stackSize);
+
+/* The following defines the unwrapped versions of select() and poll(). */
+extern int _select(int nfds, fd_set *readfds, fd_set *writefds,
+	fd_set *exceptfds, struct timeval *timeout);
+#define _MD_SELECT	_select
+
+#include <stropts.h>
+#include <poll.h>
+#define _MD_POLL _poll
+extern int _poll(struct pollfd *fds, unsigned long nfds, int timeout);
+
+PR_BEGIN_EXTERN_C
+
+/*
+** Missing function prototypes
+*/
+extern int gethostname (char *name, int namelen);
+
+PR_END_EXTERN_C
+
+#endif /* _PR_PTHREADS */
+
+extern void _MD_solaris_map_sendfile_error(int err);
+
+#endif /* nspr_solaris_defs_h___ */
+
diff --git a/nsprpub/pr/include/md/_symbian.cfg b/nsprpub/pr/include/md/_symbian.cfg
new file mode 100644
index 0000000000..4d497973ea
--- /dev/null
+++ b/nsprpub/pr/include/md/_symbian.cfg
@@ -0,0 +1,170 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_UNIX
+#define XP_UNIX
+#endif
+
+#ifndef SYMBIAN
+#define SYMBIAN
+#endif
+
+#define PR_AF_INET6 0x0806  /* same as AF_INET6 */
+
+#ifdef __arm__
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_DOUBLE  8
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#elif defined(__WINS__)
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_POINTER 4
+#define PR_ALIGN_OF_WORD    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_DOUBLE  4
+
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#else
+
+#error "Unknown CPU architecture"
+
+#endif
+
+#ifndef HAVE_LONG_LONG
+#define	HAVE_LONG_LONG
+#endif
+#if PR_ALIGN_OF_DOUBLE == 8
+#define HAVE_ALIGNED_DOUBLES
+#endif
+#if PR_ALIGN_OF_INT64 == 8
+#define HAVE_ALIGNED_LONGLONGS
+#endif
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE		PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT 	PR_BYTES_PER_SHORT
+#define BYTES_PER_INT 		PR_BYTES_PER_INT
+#define BYTES_PER_INT64		PR_BYTES_PER_INT64
+#define BYTES_PER_LONG		PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT		PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE	PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD		PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD		PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE		PR_BITS_PER_BYTE
+#define BITS_PER_SHORT		PR_BITS_PER_SHORT
+#define BITS_PER_INT		PR_BITS_PER_INT
+#define BITS_PER_INT64		PR_BITS_PER_INT64
+#define BITS_PER_LONG		PR_BITS_PER_LONG
+#define BITS_PER_FLOAT		PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE		PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD		PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2	PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2	PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2	PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2	PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2	PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2	PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2 	PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2	PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT		PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT		PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG		PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64		PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT		PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE		PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER	PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD		PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2	PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2	PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2	PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_symbian.h b/nsprpub/pr/include/md/_symbian.h
new file mode 100644
index 0000000000..f88bd38592
--- /dev/null
+++ b/nsprpub/pr/include/md/_symbian.h
@@ -0,0 +1,50 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_symbian_defs_h___
+#define nspr_symbian_defs_h___
+
+#include "prthread.h"
+
+/*
+ * Internal configuration macros
+ */
+
+#define _PR_SI_SYSNAME  "SYMBIAN"
+#if defined(__WINS__)
+#define _PR_SI_ARCHITECTURE "i386"
+#elif defined(__arm__)
+#define _PR_SI_ARCHITECTURE "arm"
+#else
+#error "Unknown CPU architecture"
+#endif
+#define PR_DLL_SUFFIX		".dll"
+
+#undef	HAVE_STACK_GROWING_UP
+
+#ifdef DYNAMIC_LIBRARY
+#define HAVE_DLL
+#define USE_DLFCN
+#endif
+
+#define _PR_STAT_HAS_ONLY_ST_ATIME
+#define _PR_NO_LARGE_FILES
+#define _PR_HAVE_SYSV_SEMAPHORES
+#define PR_HAVE_SYSV_NAMED_SHARED_MEMORY
+
+#ifndef _PR_PTHREADS
+#error "Classic NSPR is not implemented"
+#endif
+
+extern void _MD_EarlyInit(void);
+
+#define _MD_EARLY_INIT                  _MD_EarlyInit
+#define _MD_FINAL_INIT                  _PR_UnixInit
+#define _MD_INTERVAL_USE_GTOD
+
+/* For writev() */
+#include <sys/uio.h>
+
+#endif /* nspr_symbian_defs_h___ */
diff --git a/nsprpub/pr/include/md/_unix_errors.h b/nsprpub/pr/include/md/_unix_errors.h
new file mode 100644
index 0000000000..96d72db0b3
--- /dev/null
+++ b/nsprpub/pr/include/md/_unix_errors.h
@@ -0,0 +1,139 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef prunixerrors_h___
+#define prunixerrors_h___
+
+#include <unistd.h>
+#include <stddef.h>
+
+PR_BEGIN_EXTERN_C
+
+extern void _MD_unix_map_default_error(int err);
+#define	_PR_MD_MAP_DEFAULT_ERROR	_MD_unix_map_default_error
+
+extern void _MD_unix_map_opendir_error(int err);
+#define	_PR_MD_MAP_OPENDIR_ERROR	_MD_unix_map_opendir_error
+
+extern void _MD_unix_map_closedir_error(int err);
+#define	_PR_MD_MAP_CLOSEDIR_ERROR	_MD_unix_map_closedir_error
+
+extern void _MD_unix_readdir_error(int err);
+#define	_PR_MD_MAP_READDIR_ERROR	_MD_unix_readdir_error
+
+extern void _MD_unix_map_unlink_error(int err);
+#define	_PR_MD_MAP_UNLINK_ERROR	_MD_unix_map_unlink_error
+
+extern void _MD_unix_map_stat_error(int err);
+#define	_PR_MD_MAP_STAT_ERROR	_MD_unix_map_stat_error
+
+extern void _MD_unix_map_fstat_error(int err);
+#define	_PR_MD_MAP_FSTAT_ERROR	_MD_unix_map_fstat_error
+
+extern void _MD_unix_map_rename_error(int err);
+#define	_PR_MD_MAP_RENAME_ERROR	_MD_unix_map_rename_error
+
+extern void _MD_unix_map_access_error(int err);
+#define	_PR_MD_MAP_ACCESS_ERROR	_MD_unix_map_access_error
+
+extern void _MD_unix_map_mkdir_error(int err);
+#define	_PR_MD_MAP_MKDIR_ERROR	_MD_unix_map_mkdir_error
+
+extern void _MD_unix_map_rmdir_error(int err);
+#define	_PR_MD_MAP_RMDIR_ERROR	_MD_unix_map_rmdir_error
+
+extern void _MD_unix_map_read_error(int err);
+#define	_PR_MD_MAP_READ_ERROR	_MD_unix_map_read_error
+
+extern void _MD_unix_map_write_error(int err);
+#define	_PR_MD_MAP_WRITE_ERROR	_MD_unix_map_write_error
+
+extern void _MD_unix_map_lseek_error(int err);
+#define	_PR_MD_MAP_LSEEK_ERROR	_MD_unix_map_lseek_error
+
+extern void _MD_unix_map_fsync_error(int err);
+#define	_PR_MD_MAP_FSYNC_ERROR	_MD_unix_map_fsync_error
+
+extern void _MD_unix_map_close_error(int err);
+#define	_PR_MD_MAP_CLOSE_ERROR	_MD_unix_map_close_error
+
+extern void _MD_unix_map_socket_error(int err);
+#define	_PR_MD_MAP_SOCKET_ERROR	_MD_unix_map_socket_error
+
+extern void _MD_unix_map_socketavailable_error(int err);
+#define	_PR_MD_MAP_SOCKETAVAILABLE_ERROR	_MD_unix_map_socketavailable_error
+
+extern void _MD_unix_map_recv_error(int err);
+#define	_PR_MD_MAP_RECV_ERROR	_MD_unix_map_recv_error
+
+extern void _MD_unix_map_recvfrom_error(int err);
+#define	_PR_MD_MAP_RECVFROM_ERROR	_MD_unix_map_recvfrom_error
+
+extern void _MD_unix_map_send_error(int err);
+#define	_PR_MD_MAP_SEND_ERROR	_MD_unix_map_send_error
+
+extern void _MD_unix_map_sendto_error(int err);
+#define	_PR_MD_MAP_SENDTO_ERROR	_MD_unix_map_sendto_error
+
+extern void _MD_unix_map_writev_error(int err);
+#define	_PR_MD_MAP_WRITEV_ERROR	_MD_unix_map_writev_error
+
+extern void _MD_unix_map_accept_error(int err);
+#define	_PR_MD_MAP_ACCEPT_ERROR	_MD_unix_map_accept_error
+
+extern void _MD_unix_map_connect_error(int err);
+#define	_PR_MD_MAP_CONNECT_ERROR	_MD_unix_map_connect_error
+
+extern void _MD_unix_map_bind_error(int err);
+#define	_PR_MD_MAP_BIND_ERROR	_MD_unix_map_bind_error
+
+extern void _MD_unix_map_listen_error(int err);
+#define	_PR_MD_MAP_LISTEN_ERROR	_MD_unix_map_listen_error
+
+extern void _MD_unix_map_shutdown_error(int err);
+#define	_PR_MD_MAP_SHUTDOWN_ERROR	_MD_unix_map_shutdown_error
+
+extern void _MD_unix_map_socketpair_error(int err);
+#define	_PR_MD_MAP_SOCKETPAIR_ERROR	_MD_unix_map_socketpair_error
+
+extern void _MD_unix_map_getsockname_error(int err);
+#define	_PR_MD_MAP_GETSOCKNAME_ERROR	_MD_unix_map_getsockname_error
+
+extern void _MD_unix_map_getpeername_error(int err);
+#define	_PR_MD_MAP_GETPEERNAME_ERROR	_MD_unix_map_getpeername_error
+
+extern void _MD_unix_map_getsockopt_error(int err);
+#define	_PR_MD_MAP_GETSOCKOPT_ERROR	_MD_unix_map_getsockopt_error
+
+extern void _MD_unix_map_setsockopt_error(int err);
+#define	_PR_MD_MAP_SETSOCKOPT_ERROR	_MD_unix_map_setsockopt_error
+
+extern void _MD_unix_map_open_error(int err);
+#define	_PR_MD_MAP_OPEN_ERROR	_MD_unix_map_open_error
+
+extern void _MD_unix_map_mmap_error(int err);
+#define	_PR_MD_MAP_MMAP_ERROR	_MD_unix_map_mmap_error
+
+extern void _MD_unix_map_gethostname_error(int err);
+#define	_PR_MD_MAP_GETHOSTNAME_ERROR	_MD_unix_map_gethostname_error
+
+extern void _MD_unix_map_select_error(int err);
+#define	_PR_MD_MAP_SELECT_ERROR	_MD_unix_map_select_error
+
+extern void _MD_unix_map_poll_error(int err);
+#define _PR_MD_MAP_POLL_ERROR _MD_unix_map_poll_error
+
+extern void _MD_unix_map_poll_revents_error(int err);
+#define _PR_MD_MAP_POLL_REVENTS_ERROR _MD_unix_map_poll_revents_error
+
+extern void _MD_unix_map_flock_error(int err);
+#define	_PR_MD_MAP_FLOCK_ERROR	_MD_unix_map_flock_error
+
+extern void _MD_unix_map_lockf_error(int err);
+#define	_PR_MD_MAP_LOCKF_ERROR	_MD_unix_map_lockf_error
+
+PR_END_EXTERN_C
+
+#endif /* prunixerrors_h___ */
diff --git a/nsprpub/pr/include/md/_unixos.h b/nsprpub/pr/include/md/_unixos.h
new file mode 100644
index 0000000000..ea46b3a47f
--- /dev/null
+++ b/nsprpub/pr/include/md/_unixos.h
@@ -0,0 +1,624 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef prunixos_h___
+#define prunixos_h___
+
+/*
+ * If FD_SETSIZE is not defined on the command line, set the default value
+ * before include select.h
+ */
+/*
+ * Linux: FD_SETSIZE is defined in /usr/include/sys/select.h and should
+ * not be redefined.
+ */
+#if !defined(LINUX) && !defined(__GNU__) && !defined(__GLIBC__) \
+    && !defined(DARWIN)
+#ifndef FD_SETSIZE
+#define FD_SETSIZE  4096
+#endif
+#endif
+
+#include <unistd.h>
+#include <stddef.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <errno.h>
+
+#include "prio.h"
+#include "prmem.h"
+#include "prclist.h"
+
+/*
+ * For select(), fd_set, and struct timeval.
+ *
+ * In The Single UNIX(R) Specification, Version 2,
+ * the header file for select() is <sys/time.h>.
+ * In Version 3, the header file for select() is
+ * changed to <sys/select.h>.
+ *
+ * fd_set is defined in <sys/types.h>.  Usually
+ * <sys/time.h> includes <sys/types.h>, but on some
+ * older systems <sys/time.h> does not include
+ * <sys/types.h>, so we include it explicitly.
+ */
+#include <sys/time.h>
+#include <sys/types.h>
+#if defined(AIX) || defined(SYMBIAN)
+#include <sys/select.h>
+#endif
+
+#ifndef SYMBIAN
+#define HAVE_NETINET_TCP_H
+#endif
+
+#define _PR_HAVE_O_APPEND
+
+#define PR_DIRECTORY_SEPARATOR		'/'
+#define PR_DIRECTORY_SEPARATOR_STR	"/"
+#define PR_PATH_SEPARATOR		':'
+#define PR_PATH_SEPARATOR_STR		":"
+typedef int (*FARPROC)();
+
+/*
+ * intervals at which GLOBAL threads wakeup to check for pending interrupt
+ */
+#define _PR_INTERRUPT_CHECK_INTERVAL_SECS 5
+extern PRIntervalTime intr_timeout_ticks;
+
+/*
+ * The bit flags for the in_flags and out_flags fields
+ * of _PR_UnixPollDesc
+ */
+#ifdef _PR_USE_POLL
+#define _PR_UNIX_POLL_READ    POLLIN
+#define _PR_UNIX_POLL_WRITE   POLLOUT
+#define _PR_UNIX_POLL_EXCEPT  POLLPRI
+#define _PR_UNIX_POLL_ERR     POLLERR
+#define _PR_UNIX_POLL_NVAL    POLLNVAL
+#define _PR_UNIX_POLL_HUP     POLLHUP
+#else /* _PR_USE_POLL */
+#define _PR_UNIX_POLL_READ    0x1
+#define _PR_UNIX_POLL_WRITE   0x2
+#define _PR_UNIX_POLL_EXCEPT  0x4
+#define _PR_UNIX_POLL_ERR     0x8
+#define _PR_UNIX_POLL_NVAL    0x10
+#define _PR_UNIX_POLL_HUP     0x20
+#endif /* _PR_USE_POLL */
+
+typedef struct _PRUnixPollDesc {
+	PRInt32 osfd;
+	PRInt16 in_flags;
+	PRInt16 out_flags;
+} _PRUnixPollDesc;
+
+typedef struct PRPollQueue {
+    PRCList links;        /* for linking PRPollQueue's together */
+    _PRUnixPollDesc *pds;        /* array of poll descriptors */
+    PRUintn npds;            /* length of the array */
+    PRPackedBool on_ioq;    /* is this on the async i/o work q? */
+    PRIntervalTime timeout;        /* timeout, in ticks */
+    struct PRThread *thr;
+} PRPollQueue;
+
+#define _PR_POLLQUEUE_PTR(_qp) \
+    ((PRPollQueue*) ((char*) (_qp) - offsetof(PRPollQueue,links)))
+
+
+extern PRInt32 _PR_WaitForMultipleFDs(
+    _PRUnixPollDesc *unixpds,
+    PRInt32 pdcnt,
+    PRIntervalTime timeout);
+extern void _PR_Unblock_IO_Wait(struct PRThread *thr);
+
+#if defined(_PR_LOCAL_THREADS_ONLY) || defined(_PR_GLOBAL_THREADS_ONLY)
+#define _MD_CHECK_FOR_EXIT()
+#endif
+
+extern fd_set _pr_md_read_set, _pr_md_write_set, _pr_md_exception_set;
+extern PRInt16 _pr_md_read_cnt[], _pr_md_write_cnt[], _pr_md_exception_cnt[];
+extern PRInt32 _pr_md_ioq_max_osfd;
+extern PRUint32 _pr_md_ioq_timeout;
+
+struct _MDFileDesc {
+    int osfd;
+#if defined(LINUX) && defined(_PR_PTHREADS)
+    int tcp_nodelay;  /* used by pt_LinuxSendFile */
+#endif
+};
+
+struct _MDDir {
+	DIR *d;
+};
+
+struct _PRCPU;
+extern void _MD_unix_init_running_cpu(struct _PRCPU *cpu);
+
+/*
+** Make a redzone at both ends of the stack segment. Disallow access
+** to those pages of memory. It's ok if the mprotect call's don't
+** work - it just means that we don't really have a functional
+** redzone.
+*/
+#include <sys/mman.h>
+#ifndef PROT_NONE
+#define PROT_NONE 0x0
+#endif
+
+#if defined(DEBUG) && !defined(DARWIN)
+#if !defined(SOLARIS)	
+#include <string.h>  /* for memset() */
+#define _MD_INIT_STACK(ts,REDZONE)					\
+    PR_BEGIN_MACRO                 					\
+	(void) mprotect((void*)ts->seg->vaddr, REDZONE, PROT_NONE);	\
+	(void) mprotect((void*) ((char*)ts->seg->vaddr + REDZONE + ts->stackSize),\
+			REDZONE, PROT_NONE);				\
+    /*									\
+    ** Fill stack memory with something that turns into an illegal	\
+    ** pointer value. This will sometimes find runtime references to	\
+    ** uninitialized pointers. We don't do this for solaris because we	\
+    ** can use purify instead.						\
+    */									\
+    if (_pr_debugStacks) {						\
+	memset(ts->allocBase + REDZONE, 0xf7, ts->stackSize);		\
+    }									\
+    PR_END_MACRO
+#else	/* !SOLARIS	*/
+#define _MD_INIT_STACK(ts,REDZONE)					\
+    PR_BEGIN_MACRO                 					\
+	(void) mprotect((void*)ts->seg->vaddr, REDZONE, PROT_NONE);	\
+	(void) mprotect((void*) ((char*)ts->seg->vaddr + REDZONE + ts->stackSize),\
+			REDZONE, PROT_NONE);				\
+    PR_END_MACRO
+#endif	/* !SOLARIS	*/
+
+/*
+ * _MD_CLEAR_STACK
+ *	Allow access to the redzone pages; the access was turned off in
+ *	_MD_INIT_STACK.
+ */
+#define _MD_CLEAR_STACK(ts)						\
+    PR_BEGIN_MACRO                 					\
+	(void) mprotect((void*)ts->seg->vaddr, REDZONE, PROT_READ|PROT_WRITE);\
+	(void) mprotect((void*) ((char*)ts->seg->vaddr + REDZONE + ts->stackSize),\
+			REDZONE, PROT_READ|PROT_WRITE);			\
+    PR_END_MACRO
+
+#else	/* DEBUG */
+
+#define _MD_INIT_STACK(ts,REDZONE)
+#define _MD_CLEAR_STACK(ts)
+
+#endif	/* DEBUG */
+
+#if !defined(SOLARIS) 
+
+#define PR_SET_INTSOFF(newval)
+
+#endif
+
+/************************************************************************/
+
+extern void _PR_UnixInit(void);
+
+extern void _PR_UnixCleanup(void);
+#define _MD_EARLY_CLEANUP _PR_UnixCleanup
+
+/************************************************************************/
+
+struct _MDProcess {
+    pid_t pid;
+};
+
+struct PRProcess;
+struct PRProcessAttr;
+
+/* Create a new process (fork() + exec()) */
+#define _MD_CREATE_PROCESS _MD_CreateUnixProcess
+extern struct PRProcess * _MD_CreateUnixProcess(
+    const char *path,
+    char *const *argv,
+    char *const *envp,
+    const struct PRProcessAttr *attr
+);
+
+#define _MD_DETACH_PROCESS _MD_DetachUnixProcess
+extern PRStatus _MD_DetachUnixProcess(struct PRProcess *process);
+
+/* Wait for a child process to terminate */
+#define _MD_WAIT_PROCESS _MD_WaitUnixProcess
+extern PRStatus _MD_WaitUnixProcess(struct PRProcess *process,
+    PRInt32 *exitCode);
+
+#define _MD_KILL_PROCESS _MD_KillUnixProcess
+extern PRStatus _MD_KillUnixProcess(struct PRProcess *process);
+
+/************************************************************************/
+
+extern void _MD_EnableClockInterrupts(void);
+extern void _MD_DisableClockInterrupts(void);
+
+#define _MD_START_INTERRUPTS			_MD_StartInterrupts
+#define _MD_STOP_INTERRUPTS				_MD_StopInterrupts
+#define _MD_DISABLE_CLOCK_INTERRUPTS	_MD_DisableClockInterrupts
+#define _MD_ENABLE_CLOCK_INTERRUPTS		_MD_EnableClockInterrupts
+#define _MD_BLOCK_CLOCK_INTERRUPTS		_MD_BlockClockInterrupts
+#define _MD_UNBLOCK_CLOCK_INTERRUPTS	_MD_UnblockClockInterrupts
+
+/************************************************************************/
+
+extern void		_MD_InitCPUS(void);
+#define _MD_INIT_CPUS           _MD_InitCPUS
+
+extern void		_MD_Wakeup_CPUs(void);
+#define _MD_WAKEUP_CPUS _MD_Wakeup_CPUs
+
+#define _MD_PAUSE_CPU			_MD_PauseCPU
+
+#if defined(_PR_LOCAL_THREADS_ONLY) || defined(_PR_GLOBAL_THREADS_ONLY)
+#define _MD_CLEANUP_BEFORE_EXIT()
+#endif
+
+#ifndef IRIX
+#define _MD_EXIT(status)		_exit(status)
+#endif
+
+/************************************************************************/
+
+#define _MD_GET_ENV				getenv
+#define _MD_PUT_ENV				putenv
+
+/************************************************************************/
+
+#define _MD_INIT_FILEDESC(fd)
+
+extern void		_MD_MakeNonblock(PRFileDesc *fd);
+#define _MD_MAKE_NONBLOCK			_MD_MakeNonblock		
+
+/************************************************************************/
+
+#if !defined(_PR_PTHREADS)
+
+extern void		_MD_InitSegs(void);
+extern PRStatus	_MD_AllocSegment(PRSegment *seg, PRUint32 size,
+				void *vaddr);
+extern void		_MD_FreeSegment(PRSegment *seg);
+
+#define _MD_INIT_SEGS			_MD_InitSegs
+#define _MD_ALLOC_SEGMENT		_MD_AllocSegment
+#define _MD_FREE_SEGMENT		_MD_FreeSegment
+
+#endif /* !defined(_PR_PTHREADS) */
+
+/************************************************************************/
+
+#ifdef _MD_INTERVAL_USE_GTOD
+extern PRIntervalTime   _PR_UNIX_GetInterval(void);
+extern PRIntervalTime   _PR_UNIX_TicksPerSecond(void);
+#define _MD_INTERVAL_INIT()
+#define _MD_GET_INTERVAL		_PR_UNIX_GetInterval
+#define _MD_INTERVAL_PER_SEC		_PR_UNIX_TicksPerSecond
+#endif
+
+#ifdef _PR_HAVE_CLOCK_MONOTONIC
+extern PRIntervalTime   _PR_UNIX_GetInterval2(void);
+extern PRIntervalTime   _PR_UNIX_TicksPerSecond2(void);
+#define _MD_INTERVAL_INIT()
+#define _MD_GET_INTERVAL		_PR_UNIX_GetInterval2
+#define _MD_INTERVAL_PER_SEC		_PR_UNIX_TicksPerSecond2
+#endif
+
+#define _MD_INTERVAL_PER_MILLISEC()	(_PR_MD_INTERVAL_PER_SEC() / 1000)
+#define _MD_INTERVAL_PER_MICROSEC()	(_PR_MD_INTERVAL_PER_SEC() / 1000000)
+
+/************************************************************************/
+
+#define _MD_ERRNO()             	(errno)
+#define _MD_GET_SOCKET_ERROR()		(errno)
+
+/************************************************************************/
+
+extern PRInt32 _MD_AvailableSocket(PRInt32 osfd);
+
+extern void _MD_StartInterrupts(void);
+extern void _MD_StopInterrupts(void);
+extern void _MD_DisableClockInterrupts(void);
+extern void _MD_BlockClockInterrupts(void);
+extern void _MD_UnblockClockInterrupts(void);
+extern void _MD_PauseCPU(PRIntervalTime timeout);
+
+extern PRStatus _MD_open_dir(struct _MDDir *, const char *);
+extern PRInt32  _MD_close_dir(struct _MDDir *);
+extern char *   _MD_read_dir(struct _MDDir *, PRIntn);
+extern PRInt32  _MD_open(const char *name, PRIntn osflags, PRIntn mode);
+extern PRInt32	_MD_delete(const char *name);
+extern PRInt32	_MD_getfileinfo(const char *fn, PRFileInfo *info);
+extern PRInt32  _MD_getfileinfo64(const char *fn, PRFileInfo64 *info);
+extern PRInt32  _MD_getopenfileinfo(const PRFileDesc *fd, PRFileInfo *info);
+extern PRInt32  _MD_getopenfileinfo64(const PRFileDesc *fd, PRFileInfo64 *info);
+extern PRInt32	_MD_rename(const char *from, const char *to);
+extern PRInt32	_MD_access(const char *name, PRAccessHow how);
+extern PRInt32	_MD_mkdir(const char *name, PRIntn mode);
+extern PRInt32	_MD_rmdir(const char *name);
+extern PRInt32	_MD_accept_read(PRInt32 sock, PRInt32 *newSock,
+				PRNetAddr **raddr, void *buf, PRInt32 amount);
+extern PRInt32 	_PR_UnixSendFile(PRFileDesc *sd, PRSendFileData *sfd,
+			PRTransmitFileFlags flags, PRIntervalTime timeout);
+
+extern PRStatus _MD_LockFile(PRInt32 osfd);
+extern PRStatus _MD_TLockFile(PRInt32 osfd);
+extern PRStatus _MD_UnlockFile(PRInt32 osfd);
+
+#define _MD_OPEN_DIR(dir, name)		    _MD_open_dir(dir, name)
+#define _MD_CLOSE_DIR(dir)		        _MD_close_dir(dir)
+#define _MD_READ_DIR(dir, flags)	    _MD_read_dir(dir, flags)
+#define _MD_OPEN(name, osflags, mode)	_MD_open(name, osflags, mode)
+#define _MD_OPEN_FILE(name, osflags, mode)	_MD_open(name, osflags, mode)
+extern PRInt32 _MD_read(PRFileDesc *fd, void *buf, PRInt32 amount);
+#define _MD_READ(fd,buf,amount)		    _MD_read(fd,buf,amount)
+extern PRInt32 _MD_write(PRFileDesc *fd, const void *buf, PRInt32 amount);
+#define _MD_WRITE(fd,buf,amount)	    _MD_write(fd,buf,amount)
+#define _MD_DELETE(name)		        _MD_delete(name)
+#define _MD_GETFILEINFO(fn, info)	    _MD_getfileinfo(fn, info)
+#define _MD_GETFILEINFO64(fn, info)	    _MD_getfileinfo64(fn, info)
+#define _MD_GETOPENFILEINFO(fd, info)	_MD_getopenfileinfo(fd, info)
+#define _MD_GETOPENFILEINFO64(fd, info)	_MD_getopenfileinfo64(fd, info)
+#define _MD_RENAME(from, to)		    _MD_rename(from, to)
+#define _MD_ACCESS(name, how)		    _MD_access(name, how)
+#define _MD_MKDIR(name, mode)		    _MD_mkdir(name, mode)
+#define _MD_MAKE_DIR(name, mode)		_MD_mkdir(name, mode)
+#define _MD_RMDIR(name)			        _MD_rmdir(name)
+#define _MD_ACCEPT_READ(sock, newSock, raddr, buf, amount)	_MD_accept_read(sock, newSock, raddr, buf, amount)
+
+#define _MD_LOCKFILE _MD_LockFile
+#define _MD_TLOCKFILE _MD_TLockFile
+#define _MD_UNLOCKFILE _MD_UnlockFile
+
+
+extern PRInt32		_MD_socket(int af, int type, int flags);
+#define _MD_SOCKET	_MD_socket
+extern PRInt32		_MD_connect(PRFileDesc *fd, const PRNetAddr *addr,
+								PRUint32 addrlen, PRIntervalTime timeout);
+#define _MD_CONNECT	_MD_connect
+extern PRInt32		_MD_accept(PRFileDesc *fd, PRNetAddr *addr, PRUint32 *addrlen,
+													PRIntervalTime timeout);
+#define _MD_ACCEPT	_MD_accept
+extern PRInt32		_MD_bind(PRFileDesc *fd, const PRNetAddr *addr, PRUint32 addrlen);
+#define _MD_BIND	_MD_bind
+extern PRInt32		_MD_listen(PRFileDesc *fd, PRIntn backlog);
+#define _MD_LISTEN	_MD_listen
+extern PRInt32		_MD_shutdown(PRFileDesc *fd, PRIntn how);
+#define _MD_SHUTDOWN	_MD_shutdown
+
+extern PRInt32		_MD_recv(PRFileDesc *fd, void *buf, PRInt32 amount, 
+                               PRIntn flags, PRIntervalTime timeout);
+#define _MD_RECV	_MD_recv
+extern PRInt32		_MD_send(PRFileDesc *fd, const void *buf, PRInt32 amount,
+									PRIntn flags, PRIntervalTime timeout);
+#define _MD_SEND	_MD_send
+extern PRInt32		_MD_recvfrom(PRFileDesc *fd, void *buf, PRInt32 amount,
+						PRIntn flags, PRNetAddr *addr, PRUint32 *addrlen,
+											PRIntervalTime timeout);
+#define _MD_RECVFROM	_MD_recvfrom
+extern PRInt32 _MD_sendto(PRFileDesc *fd, const void *buf, PRInt32 amount,
+							PRIntn flags, const PRNetAddr *addr, PRUint32 addrlen,
+												PRIntervalTime timeout);
+#define _MD_SENDTO	_MD_sendto
+extern PRInt32		_MD_writev(PRFileDesc *fd, const struct PRIOVec *iov,
+								PRInt32 iov_size, PRIntervalTime timeout);
+#define _MD_WRITEV	_MD_writev
+
+extern PRInt32		_MD_socketavailable(PRFileDesc *fd);
+#define	_MD_SOCKETAVAILABLE		_MD_socketavailable
+extern PRInt64		_MD_socketavailable64(PRFileDesc *fd);
+#define	_MD_SOCKETAVAILABLE64		_MD_socketavailable64
+
+#define	_MD_PIPEAVAILABLE		_MD_socketavailable
+
+extern PRInt32 _MD_pr_poll(PRPollDesc *pds, PRIntn npds,
+												PRIntervalTime timeout);
+#define _MD_PR_POLL		_MD_pr_poll
+
+extern PRInt32		_MD_close(PRInt32 osfd);
+#define _MD_CLOSE_FILE	_MD_close
+extern PRInt32		_MD_lseek(PRFileDesc*, PRInt32, PRSeekWhence);
+#define _MD_LSEEK	_MD_lseek
+extern PRInt64		_MD_lseek64(PRFileDesc*, PRInt64, PRSeekWhence);
+#define _MD_LSEEK64	_MD_lseek64
+extern PRInt32		_MD_fsync(PRFileDesc *fd);
+#define _MD_FSYNC	_MD_fsync
+
+extern PRInt32 _MD_socketpair(int af, int type, int flags, PRInt32 *osfd);
+#define _MD_SOCKETPAIR		_MD_socketpair
+
+#define _MD_CLOSE_SOCKET	_MD_close
+
+#ifndef NO_NSPR_10_SUPPORT
+#define _MD_STAT	stat
+#endif
+
+extern PRStatus _MD_getpeername(PRFileDesc *fd, PRNetAddr *addr,
+											PRUint32 *addrlen);
+#define _MD_GETPEERNAME _MD_getpeername
+extern PRStatus _MD_getsockname(PRFileDesc *fd, PRNetAddr *addr,
+											PRUint32 *addrlen);
+#define _MD_GETSOCKNAME _MD_getsockname
+
+extern PRStatus _MD_getsockopt(PRFileDesc *fd, PRInt32 level,
+						PRInt32 optname, char* optval, PRInt32* optlen);
+#define _MD_GETSOCKOPT		_MD_getsockopt
+extern PRStatus _MD_setsockopt(PRFileDesc *fd, PRInt32 level,
+					PRInt32 optname, const char* optval, PRInt32 optlen);
+#define _MD_SETSOCKOPT		_MD_setsockopt
+
+extern PRStatus _MD_set_fd_inheritable(PRFileDesc *fd, PRBool inheritable);
+#define _MD_SET_FD_INHERITABLE _MD_set_fd_inheritable
+
+extern void _MD_init_fd_inheritable(PRFileDesc *fd, PRBool imported);
+#define _MD_INIT_FD_INHERITABLE _MD_init_fd_inheritable
+
+extern void _MD_query_fd_inheritable(PRFileDesc *fd);
+#define _MD_QUERY_FD_INHERITABLE _MD_query_fd_inheritable
+
+extern PRStatus _MD_gethostname(char *name, PRUint32 namelen);
+#define _MD_GETHOSTNAME		_MD_gethostname
+
+extern PRStatus _MD_getsysinfo(PRSysInfo cmd, char *name, PRUint32 namelen);
+#define _MD_GETSYSINFO		_MD_getsysinfo
+
+extern int _MD_unix_get_nonblocking_connect_error(int osfd);
+
+/* Memory-mapped files */
+
+struct _MDFileMap {
+    PRIntn prot;
+    PRIntn flags;
+    PRBool isAnonFM; /* when true, PR_CloseFileMap() must close the related fd */
+};
+
+extern PRStatus _MD_CreateFileMap(struct PRFileMap *fmap, PRInt64 size);
+#define _MD_CREATE_FILE_MAP _MD_CreateFileMap
+
+#define _MD_GET_MEM_MAP_ALIGNMENT() PR_GetPageSize()
+
+extern void * _MD_MemMap(struct PRFileMap *fmap, PRInt64 offset,
+        PRUint32 len);
+#define _MD_MEM_MAP _MD_MemMap
+
+extern PRStatus _MD_MemUnmap(void *addr, PRUint32 size);
+#define _MD_MEM_UNMAP _MD_MemUnmap
+
+extern PRStatus _MD_CloseFileMap(struct PRFileMap *fmap);
+#define _MD_CLOSE_FILE_MAP _MD_CloseFileMap
+
+extern PRStatus _MD_SyncMemMap(
+    PRFileDesc *fd,
+    void *addr,
+    PRUint32 len);
+#define _MD_SYNC_MEM_MAP _MD_SyncMemMap
+
+/*
+ * The standard (XPG4) gettimeofday() (from BSD) takes two arguments.
+ * On some SVR4 derivatives, gettimeofday() takes only one argument.
+ * The GETTIMEOFDAY macro is intended to hide this difference.
+ */
+#ifdef HAVE_SVID_GETTOD
+#define GETTIMEOFDAY(tp) gettimeofday(tp)
+#else
+#define GETTIMEOFDAY(tp) gettimeofday((tp), NULL)
+#endif
+
+#if defined(_PR_PTHREADS) && !defined(_PR_POLL_AVAILABLE)
+#define _PR_NEED_FAKE_POLL
+#endif
+
+#if defined(_PR_NEED_FAKE_POLL)
+
+/*
+ * Some platforms don't have poll(), but our pthreads code calls poll().
+ * As a temporary measure, I implemented a fake poll() using select().
+ * Here are the struct and macro definitions copied from sys/poll.h
+ * on Solaris 2.5.
+ */
+
+struct pollfd {
+    int fd;
+    short events;
+    short revents;
+};
+
+/* poll events */
+
+#define	POLLIN		0x0001		/* fd is readable */
+#define	POLLPRI		0x0002		/* high priority info at fd */
+#define	POLLOUT		0x0004		/* fd is writeable (won't block) */
+#define	POLLRDNORM	0x0040		/* normal data is readable */
+#define	POLLWRNORM	POLLOUT
+#define	POLLRDBAND	0x0080		/* out-of-band data is readable */
+#define	POLLWRBAND	0x0100		/* out-of-band data is writeable */
+
+#define	POLLNORM	POLLRDNORM
+
+#define	POLLERR		0x0008		/* fd has error condition */
+#define	POLLHUP		0x0010		/* fd has been hung up on */
+#define	POLLNVAL	0x0020		/* invalid pollfd entry */
+
+extern int poll(struct pollfd *, unsigned long, int);
+
+#endif /* _PR_NEED_FAKE_POLL */
+
+/*
+** A vector of the UNIX I/O calls we use. These are here to smooth over
+** the rough edges needed for large files. All of NSPR's implmentaions
+** go through this vector using syntax of the form
+**      result = _md_iovector.xxx64(args);
+*/
+
+#if defined(SOLARIS2_5)
+/*
+** Special case: Solaris 2.5.1
+** Solaris starts to have 64-bit file I/O in 2.6.  We build on Solaris
+** 2.5.1 so that we can use the same binaries on both Solaris 2.5.1 and
+** 2.6.  At run time, we detect whether 64-bit file I/O is available by
+** looking up the 64-bit file function symbols in libc.  At build time,
+** we need to define the 64-bit file I/O datatypes that are compatible
+** with their definitions on Solaris 2.6.
+*/
+typedef PRInt64 off64_t;
+typedef PRUint64 ino64_t;
+typedef PRInt64 blkcnt64_t;
+struct stat64 {
+    dev_t st_dev;
+    long st_pad1[3];
+    ino64_t st_ino;
+    mode_t st_mode;
+    nlink_t st_nlink;
+    uid_t st_uid;
+    gid_t st_gid;
+    dev_t st_rdev;
+    long t_pad2[2];
+    off64_t st_size;
+    timestruc_t st_atim;
+    timestruc_t st_mtim;
+    timestruc_t st_ctim;
+    long st_blksize;
+    blkcnt64_t st_blocks;
+    char st_fstype[_ST_FSTYPSZ];
+    long st_pad4[8];
+};
+typedef struct stat64 _MDStat64;
+typedef off64_t _MDOff64_t;
+
+#elif defined(_PR_HAVE_OFF64_T)
+typedef struct stat64 _MDStat64;
+typedef off64_t _MDOff64_t;
+#elif defined(_PR_HAVE_LARGE_OFF_T)
+typedef struct stat _MDStat64;
+typedef off_t _MDOff64_t;
+#elif defined(_PR_NO_LARGE_FILES)
+typedef struct stat _MDStat64;
+typedef PRInt64 _MDOff64_t;
+#else
+#error "I don't know yet"
+#endif
+
+typedef PRIntn (*_MD_Fstat64)(PRIntn osfd, _MDStat64 *buf);
+typedef PRIntn (*_MD_Open64)(const char *path, int oflag, ...);
+typedef PRIntn (*_MD_Stat64)(const char *path, _MDStat64 *buf);
+typedef _MDOff64_t (*_MD_Lseek64)(PRIntn osfd, _MDOff64_t, PRIntn whence);
+typedef void* (*_MD_Mmap64)(
+    void *addr, PRSize len, PRIntn prot, PRIntn flags,
+    PRIntn fildes, _MDOff64_t offset);
+struct _MD_IOVector
+{
+    _MD_Open64 _open64;
+    _MD_Mmap64 _mmap64;
+    _MD_Stat64 _stat64;
+    _MD_Fstat64 _fstat64;
+    _MD_Lseek64 _lseek64;
+};
+extern struct _MD_IOVector _md_iovector;
+
+#endif /* prunixos_h___ */
diff --git a/nsprpub/pr/include/md/_unixware.cfg b/nsprpub/pr/include/md/_unixware.cfg
new file mode 100644
index 0000000000..0fa8dfc9b5
--- /dev/null
+++ b/nsprpub/pr/include/md/_unixware.cfg
@@ -0,0 +1,108 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_UNIX
+#define XP_UNIX
+#endif
+
+#ifndef UNIXWARE
+#define UNIXWARE
+#endif
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#undef	HAVE_LONG_LONG
+#undef	HAVE_ALIGNED_DOUBLES
+#undef	HAVE_ALIGNED_LONGLONGS
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+
+#define _PR_POLL_BACKCOMPAT
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE		PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT 	PR_BYTES_PER_SHORT
+#define BYTES_PER_INT 		PR_BYTES_PER_INT
+#define BYTES_PER_INT64		PR_BYTES_PER_INT64
+#define BYTES_PER_LONG		PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT		PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE	PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD		PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD		PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE		PR_BITS_PER_BYTE
+#define BITS_PER_SHORT		PR_BITS_PER_SHORT
+#define BITS_PER_INT		PR_BITS_PER_INT
+#define BITS_PER_INT64		PR_BITS_PER_INT64
+#define BITS_PER_LONG		PR_BITS_PER_LONG
+#define BITS_PER_FLOAT		PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE		PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD		PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2	PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2	PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2	PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2	PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2	PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2	PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2 	PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2	PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT		PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT		PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG		PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64		PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT		PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE		PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER	PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD		PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2	PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2	PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2	PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_unixware.h b/nsprpub/pr/include/md/_unixware.h
new file mode 100644
index 0000000000..ef76f5a1b0
--- /dev/null
+++ b/nsprpub/pr/include/md/_unixware.h
@@ -0,0 +1,186 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_unixware_defs_h___
+#define nspr_unixware_defs_h___
+
+/*
+ * Internal configuration macros
+ */
+
+#define PR_LINKER_ARCH	"unixware"
+#define _PR_SI_SYSNAME		"UnixWare"
+#define _PR_SI_ARCHITECTURE	"x86"
+#define PR_DLL_SUFFIX		".so"
+
+#define _PR_VMBASE	 	0x30000000
+#define _PR_STACK_VMBASE	0x50000000
+#define _MD_DEFAULT_STACK_SIZE	65536L
+#define _MD_MMAP_FLAGS          MAP_PRIVATE
+
+#ifndef	HAVE_WEAK_IO_SYMBOLS
+#define	HAVE_WEAK_IO_SYMBOLS
+#endif
+#define _PR_POLL_AVAILABLE
+#define _PR_USE_POLL
+#define _PR_STAT_HAS_ST_ATIM_UNION
+
+#undef  HAVE_STACK_GROWING_UP
+#define HAVE_NETCONFIG
+#define	HAVE_DLL
+#define	USE_DLFCN
+#define HAVE_STRERROR
+#define NEED_STRFTIME_LOCK
+#define NEED_TIME_R
+#define _PR_NEED_STRCASECMP
+
+#define USE_SETJMP
+
+#include <setjmp.h>
+
+#define _SETJMP setjmp
+#define _LONGJMP longjmp
+#define _PR_CONTEXT_TYPE         jmp_buf
+#define _MD_GET_SP(_t)           (_t)->md.context[4]
+#define _PR_NUM_GCREGS	_JBLEN
+
+#define CONTEXT(_th) ((_th)->md.context)
+
+/*
+** Initialize the thread context preparing it to execute _main.
+*/
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \
+{								  \
+    *status = PR_TRUE; \
+    if(_SETJMP(CONTEXT(_thread))) (*_main)(); \
+    _MD_GET_SP(_thread) = (int) ((_sp) - 128); \
+}
+
+#define _MD_SWITCH_CONTEXT(_thread)  \
+    if (!_SETJMP(CONTEXT(_thread))) { \
+	(_thread)->md.errcode = errno;  \
+	_PR_Schedule();		     \
+    }
+
+/*
+** Restore a thread context, saved by _MD_SWITCH_CONTEXT
+*/
+#define _MD_RESTORE_CONTEXT(_thread) \
+{				     \
+    errno = (_thread)->md.errcode;	     \
+    _MD_SET_CURRENT_THREAD(_thread); \
+    _LONGJMP(CONTEXT(_thread), 1);    \
+}
+
+/* Machine-dependent (MD) data structures.
+ * Don't use SVR4 native threads (yet). 
+ */
+
+struct _MDThread {
+    _PR_CONTEXT_TYPE context;
+    int id;
+    int errcode;
+};
+
+struct _MDThreadStack {
+    PRInt8 notused;
+};
+
+struct _MDLock {
+    PRInt8 notused;
+};
+
+struct _MDSemaphore {
+    PRInt8 notused;
+};
+
+struct _MDCVar {
+    PRInt8 notused;
+};
+
+struct _MDSegment {
+    PRInt8 notused;
+};
+
+/*
+ * md-specific cpu structure field
+ */
+#define _PR_MD_MAX_OSFD FD_SETSIZE
+
+struct _MDCPU_Unix {
+    PRCList ioQ;
+    PRUint32 ioq_timeout;
+    PRInt32 ioq_max_osfd;
+    PRInt32 ioq_osfd_cnt;
+#ifndef _PR_USE_POLL
+    fd_set fd_read_set, fd_write_set, fd_exception_set;
+    PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD],
+				fd_exception_cnt[_PR_MD_MAX_OSFD];
+#else
+	struct pollfd *ioq_pollfds;
+	int ioq_pollfds_size;
+#endif	/* _PR_USE_POLL */
+};
+
+#define _PR_IOQ(_cpu)			((_cpu)->md.md_unix.ioQ)
+#define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu))
+#define _PR_FD_READ_SET(_cpu)		((_cpu)->md.md_unix.fd_read_set)
+#define _PR_FD_READ_CNT(_cpu)		((_cpu)->md.md_unix.fd_read_cnt)
+#define _PR_FD_WRITE_SET(_cpu)		((_cpu)->md.md_unix.fd_write_set)
+#define _PR_FD_WRITE_CNT(_cpu)		((_cpu)->md.md_unix.fd_write_cnt)
+#define _PR_FD_EXCEPTION_SET(_cpu)	((_cpu)->md.md_unix.fd_exception_set)
+#define _PR_FD_EXCEPTION_CNT(_cpu)	((_cpu)->md.md_unix.fd_exception_cnt)
+#define _PR_IOQ_TIMEOUT(_cpu)		((_cpu)->md.md_unix.ioq_timeout)
+#define _PR_IOQ_MAX_OSFD(_cpu)		((_cpu)->md.md_unix.ioq_max_osfd)
+#define _PR_IOQ_OSFD_CNT(_cpu)		((_cpu)->md.md_unix.ioq_osfd_cnt)
+#define _PR_IOQ_POLLFDS(_cpu)		((_cpu)->md.md_unix.ioq_pollfds)
+#define _PR_IOQ_POLLFDS_SIZE(_cpu)	((_cpu)->md.md_unix.ioq_pollfds_size)
+
+#define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu)	32
+
+struct _MDCPU {
+	struct _MDCPU_Unix md_unix;
+};
+
+#define _MD_INIT_LOCKS()
+#define _MD_NEW_LOCK(lock) PR_SUCCESS
+#define _MD_FREE_LOCK(lock)
+#define _MD_LOCK(lock)
+#define _MD_UNLOCK(lock)
+#define _MD_INIT_IO()
+#define _MD_IOQ_LOCK()
+#define _MD_IOQ_UNLOCK()
+
+/*
+ * The following are copied from _sunos.h, _aix.h.  This means
+ * some of them should probably be moved into _unixos.h.  But
+ * _irix.h seems to be quite different in regard to these macros.
+ */
+#define _MD_INTERVAL_USE_GTOD
+
+#define _MD_EARLY_INIT		_MD_EarlyInit
+#define _MD_FINAL_INIT		_PR_UnixInit
+#define _MD_INIT_RUNNING_CPU(cpu) _MD_unix_init_running_cpu(cpu)
+#define _MD_INIT_THREAD         _MD_InitializeThread
+#define _MD_EXIT_THREAD(thread)
+#define	_MD_SUSPEND_THREAD(thread)
+#define	_MD_RESUME_THREAD(thread)
+#define _MD_CLEAN_THREAD(_thread)
+
+/*
+ * We wrapped the select() call.  _MD_SELECT refers to the built-in,
+ * unwrapped version.
+ */
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/select.h>
+extern int _select(int nfds, fd_set *readfds, fd_set *writefds,
+	fd_set *execptfds, struct timeval *timeout);
+#define _MD_SELECT _select
+
+#define _MD_POLL _poll
+extern int _poll(struct pollfd *fds, unsigned long nfds, int timeout);
+
+#endif /* nspr_unixware_defs_h___ */
diff --git a/nsprpub/pr/include/md/_unixware7.cfg b/nsprpub/pr/include/md/_unixware7.cfg
new file mode 100644
index 0000000000..33ce83bda1
--- /dev/null
+++ b/nsprpub/pr/include/md/_unixware7.cfg
@@ -0,0 +1,112 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_UNIX
+#define XP_UNIX
+#endif
+
+#ifndef UNIXWARE
+#define UNIXWARE
+#endif
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#ifndef HAVE_LONG_LONG
+#define HAVE_LONG_LONG
+#endif
+#undef	HAVE_ALIGNED_DOUBLES
+#undef	HAVE_ALIGNED_LONGLONGS
+
+#define PR_AF_INET6 27  /* same as AF_INET6 */
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_DOUBLE 8
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+#define PR_BYTES_PER_WORD_LOG2   2
+#define PR_BYTES_PER_DWORD_LOG2  3
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_DOUBLE  64
+#define PR_BITS_PER_WORD    32
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_DOUBLE_LOG2 6
+#define PR_BITS_PER_WORD_LOG2   5
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   4
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+
+#define _PR_POLL_BACKCOMPAT
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE		PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT 	PR_BYTES_PER_SHORT
+#define BYTES_PER_INT 		PR_BYTES_PER_INT
+#define BYTES_PER_INT64		PR_BYTES_PER_INT64
+#define BYTES_PER_LONG		PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT		PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE	PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD		PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD		PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE		PR_BITS_PER_BYTE
+#define BITS_PER_SHORT		PR_BITS_PER_SHORT
+#define BITS_PER_INT		PR_BITS_PER_INT
+#define BITS_PER_INT64		PR_BITS_PER_INT64
+#define BITS_PER_LONG		PR_BITS_PER_LONG
+#define BITS_PER_FLOAT		PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE		PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD		PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2	PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2	PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2	PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2	PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2	PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2	PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2 	PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2	PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT		PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT		PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG		PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64		PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT		PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE		PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER	PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD		PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2	PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2	PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2	PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_win32_errors.h b/nsprpub/pr/include/md/_win32_errors.h
new file mode 100644
index 0000000000..1c9623723f
--- /dev/null
+++ b/nsprpub/pr/include/md/_win32_errors.h
@@ -0,0 +1,122 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_win32_errors_h___
+#define nspr_win32_errors_h___
+
+#include <windows.h>
+#include <winsock.h>
+#include <errno.h>
+
+
+extern void _MD_win32_map_default_error(PRInt32 err);
+#define _PR_MD_MAP_DEFAULT_ERROR	_MD_win32_map_default_error
+
+extern void _MD_win32_map_opendir_error(PRInt32 err);
+#define	_PR_MD_MAP_OPENDIR_ERROR	_MD_win32_map_opendir_error
+
+extern void _MD_win32_map_closedir_error(PRInt32 err);
+#define	_PR_MD_MAP_CLOSEDIR_ERROR	_MD_win32_map_closedir_error
+
+extern void _MD_unix_readdir_error(PRInt32 err);
+#define	_PR_MD_MAP_READDIR_ERROR	_MD_unix_readdir_error
+
+extern void _MD_win32_map_delete_error(PRInt32 err);
+#define	_PR_MD_MAP_DELETE_ERROR	_MD_win32_map_delete_error
+
+extern void _MD_win32_map_stat_error(PRInt32 err);
+#define	_PR_MD_MAP_STAT_ERROR	_MD_win32_map_stat_error
+
+extern void _MD_win32_map_fstat_error(PRInt32 err);
+#define	_PR_MD_MAP_FSTAT_ERROR	_MD_win32_map_fstat_error
+
+extern void _MD_win32_map_rename_error(PRInt32 err);
+#define	_PR_MD_MAP_RENAME_ERROR	_MD_win32_map_rename_error
+
+extern void _MD_win32_map_access_error(PRInt32 err);
+#define	_PR_MD_MAP_ACCESS_ERROR	_MD_win32_map_access_error
+
+extern void _MD_win32_map_mkdir_error(PRInt32 err);
+#define	_PR_MD_MAP_MKDIR_ERROR	_MD_win32_map_mkdir_error
+
+extern void _MD_win32_map_rmdir_error(PRInt32 err);
+#define	_PR_MD_MAP_RMDIR_ERROR	_MD_win32_map_rmdir_error
+
+extern void _MD_win32_map_read_error(PRInt32 err);
+#define	_PR_MD_MAP_READ_ERROR	_MD_win32_map_read_error
+
+extern void _MD_win32_map_transmitfile_error(PRInt32 err);
+#define	_PR_MD_MAP_TRANSMITFILE_ERROR	_MD_win32_map_transmitfile_error
+
+extern void _MD_win32_map_write_error(PRInt32 err);
+#define	_PR_MD_MAP_WRITE_ERROR	_MD_win32_map_write_error
+
+extern void _MD_win32_map_lseek_error(PRInt32 err);
+#define	_PR_MD_MAP_LSEEK_ERROR	_MD_win32_map_lseek_error
+
+extern void _MD_win32_map_fsync_error(PRInt32 err);
+#define	_PR_MD_MAP_FSYNC_ERROR	_MD_win32_map_fsync_error
+
+extern void _MD_win32_map_close_error(PRInt32 err);
+#define	_PR_MD_MAP_CLOSE_ERROR	_MD_win32_map_close_error
+
+extern void _MD_win32_map_socket_error(PRInt32 err);
+#define	_PR_MD_MAP_SOCKET_ERROR	_MD_win32_map_socket_error
+
+extern void _MD_win32_map_recv_error(PRInt32 err);
+#define	_PR_MD_MAP_RECV_ERROR	_MD_win32_map_recv_error
+
+extern void _MD_win32_map_recvfrom_error(PRInt32 err);
+#define	_PR_MD_MAP_RECVFROM_ERROR	_MD_win32_map_recvfrom_error
+
+extern void _MD_win32_map_send_error(PRInt32 err);
+#define	_PR_MD_MAP_SEND_ERROR	_MD_win32_map_send_error
+
+extern void _MD_win32_map_sendto_error(PRInt32 err);
+#define	_PR_MD_MAP_SENDTO_ERROR	_MD_win32_map_sendto_error
+
+extern void _MD_win32_map_accept_error(PRInt32 err);
+#define	_PR_MD_MAP_ACCEPT_ERROR	_MD_win32_map_accept_error
+
+extern void _MD_win32_map_acceptex_error(PRInt32 err);
+#define	_PR_MD_MAP_ACCEPTEX_ERROR	_MD_win32_map_acceptex_error
+
+extern PRInt32 _MD_win32_map_connect_error(PRInt32 err);
+#define	_PR_MD_MAP_CONNECT_ERROR	_MD_win32_map_connect_error
+
+extern void _MD_win32_map_bind_error(PRInt32 err);
+#define	_PR_MD_MAP_BIND_ERROR	_MD_win32_map_bind_error
+
+extern void _MD_win32_map_listen_error(PRInt32 err);
+#define	_PR_MD_MAP_LISTEN_ERROR	_MD_win32_map_listen_error
+
+extern void _MD_win32_map_shutdown_error(PRInt32 err);
+#define	_PR_MD_MAP_SHUTDOWN_ERROR	_MD_win32_map_shutdown_error
+
+extern void _MD_win32_map_getsockname_error(PRInt32 err);
+#define	_PR_MD_MAP_GETSOCKNAME_ERROR	_MD_win32_map_getsockname_error
+
+extern void _MD_win32_map_getpeername_error(PRInt32 err);
+#define	_PR_MD_MAP_GETPEERNAME_ERROR	_MD_win32_map_getpeername_error
+
+extern void _MD_win32_map_getsockopt_error(PRInt32 err);
+#define	_PR_MD_MAP_GETSOCKOPT_ERROR	_MD_win32_map_getsockopt_error
+
+extern void _MD_win32_map_setsockopt_error(PRInt32 err);
+#define	_PR_MD_MAP_SETSOCKOPT_ERROR	_MD_win32_map_setsockopt_error
+
+extern void _MD_win32_map_open_error(PRInt32 err);
+#define	_PR_MD_MAP_OPEN_ERROR	_MD_win32_map_open_error
+
+extern void _MD_win32_map_gethostname_error(PRInt32 err);
+#define	_PR_MD_MAP_GETHOSTNAME_ERROR	_MD_win32_map_gethostname_error
+
+extern void _MD_win32_map_select_error(PRInt32 err);
+#define	_PR_MD_MAP_SELECT_ERROR	_MD_win32_map_select_error
+
+extern void _MD_win32_map_lockf_error(int err);
+#define _PR_MD_MAP_LOCKF_ERROR  _MD_win32_map_lockf_error
+
+#endif /* nspr_win32_errors_h___ */
diff --git a/nsprpub/pr/include/md/_win95.cfg b/nsprpub/pr/include/md/_win95.cfg
new file mode 100644
index 0000000000..1e693cc68c
--- /dev/null
+++ b/nsprpub/pr/include/md/_win95.cfg
@@ -0,0 +1,272 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_PC
+#define XP_PC
+#endif
+
+#ifndef WIN32
+#define WIN32
+#endif
+
+#ifndef WIN95
+#define WIN95
+#endif
+
+#define PR_AF_INET6 23  /* same as AF_INET6 */
+
+#if defined(_M_IX86) || defined(_X86_)
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_WORD	4
+#define PR_BYTES_PER_DWORD	8
+#define PR_BYTES_PER_DOUBLE 8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_WORD	32
+#define PR_BITS_PER_DWORD	64
+#define PR_BITS_PER_DOUBLE  64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_WORD_LOG2	5
+#define PR_BITS_PER_DWORD_LOG2	6
+#define PR_BITS_PER_DOUBLE_LOG2 6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_WORD	4
+#define PR_ALIGN_OF_DWORD	8
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+
+#define PR_BYTES_PER_WORD_LOG2	2
+#define PR_BYTES_PER_DWORD_LOG2	3
+
+#elif defined(_M_X64) || defined(_M_AMD64) || defined(_AMD64_)
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_WORD	8
+#define PR_BYTES_PER_DWORD	8
+#define PR_BYTES_PER_DOUBLE 8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_WORD	64
+#define PR_BITS_PER_DWORD	64
+#define PR_BITS_PER_DOUBLE  64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_WORD_LOG2	6
+#define PR_BITS_PER_DWORD_LOG2	6
+#define PR_BITS_PER_DOUBLE_LOG2 6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_WORD	8
+#define PR_ALIGN_OF_DWORD	8
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+
+#define PR_BYTES_PER_WORD_LOG2	3
+#define PR_BYTES_PER_DWORD_LOG2	3
+
+#elif defined(_M_IA64) || defined(_IA64_)
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_WORD	8
+#define PR_BYTES_PER_DWORD	8
+#define PR_BYTES_PER_DOUBLE 8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_WORD	64
+#define PR_BITS_PER_DWORD	64
+#define PR_BITS_PER_DOUBLE  64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_WORD_LOG2	6
+#define PR_BITS_PER_DWORD_LOG2	6
+#define PR_BITS_PER_DOUBLE_LOG2 6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_WORD	8
+#define PR_ALIGN_OF_DWORD	8
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+
+#define PR_BYTES_PER_WORD_LOG2	3
+#define PR_BYTES_PER_DWORD_LOG2	3
+
+#elif defined(_M_ARM) || defined(_ARM_)
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_WORD   4
+#define PR_BYTES_PER_DWORD  8
+#define PR_BYTES_PER_DOUBLE 8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_WORD    32
+#define PR_BITS_PER_DWORD   64
+#define PR_BITS_PER_DOUBLE  64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_WORD_LOG2   5
+#define PR_BITS_PER_DWORD_LOG2  6
+#define PR_BITS_PER_DOUBLE_LOG2 6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_WORD    4
+#define PR_ALIGN_OF_DWORD   8
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 4
+
+#define PR_BYTES_PER_WORD_LOG2  2
+#define PR_BYTES_PER_DWORD_LOG2 3
+
+#else /* defined(_M_IX86) || defined(_X86_) */
+
+#error unknown processor architecture
+
+#endif /* defined(_M_IX86) || defined(_X86_) */
+
+#ifndef HAVE_LONG_LONG
+#define HAVE_LONG_LONG
+#endif
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE      PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT     PR_BYTES_PER_SHORT
+#define BYTES_PER_INT       PR_BYTES_PER_INT
+#define BYTES_PER_INT64     PR_BYTES_PER_INT64
+#define BYTES_PER_LONG      PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT     PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE    PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD      PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD     PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE       PR_BITS_PER_BYTE
+#define BITS_PER_SHORT      PR_BITS_PER_SHORT
+#define BITS_PER_INT        PR_BITS_PER_INT
+#define BITS_PER_INT64      PR_BITS_PER_INT64
+#define BITS_PER_LONG       PR_BITS_PER_LONG
+#define BITS_PER_FLOAT      PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE     PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD       PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2  PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2 PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2   PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2 PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2  PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2 PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2    PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2  PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT      PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT        PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG       PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64      PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT      PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE     PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER    PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD       PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2		PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2    PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2    PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_win95.h b/nsprpub/pr/include/md/_win95.h
new file mode 100644
index 0000000000..d65e264376
--- /dev/null
+++ b/nsprpub/pr/include/md/_win95.h
@@ -0,0 +1,544 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_win95_defs_h___
+#define nspr_win95_defs_h___
+
+#include "prio.h"
+
+#include <windows.h>
+#include <winsock.h>
+#include <errno.h>
+
+/*
+ * Internal configuration macros
+ */
+
+#define PR_LINKER_ARCH      "win32"
+#define _PR_SI_SYSNAME        "WIN95"
+#if defined(_M_IX86) || defined(_X86_)
+#define _PR_SI_ARCHITECTURE   "x86"
+#elif defined(_M_X64) || defined(_M_AMD64) || defined(_AMD64_)
+#define _PR_SI_ARCHITECTURE   "x86-64"
+#elif defined(_M_IA64) || defined(_IA64_)
+#define _PR_SI_ARCHITECTURE   "ia64"
+#elif defined(_M_ARM) || defined(_ARM_)
+#define _PR_SI_ARCHITECTURE   "arm"
+#else
+#error unknown processor architecture
+#endif
+
+#define HAVE_DLL
+#undef  HAVE_THREAD_AFFINITY
+#define _PR_HAVE_GETADDRINFO
+#define _PR_INET6_PROBE
+#ifndef _PR_INET6
+#define AF_INET6 23
+/* newer ws2tcpip.h provides these */
+#ifndef AI_CANONNAME
+#define AI_CANONNAME 0x2
+#define AI_NUMERICHOST 0x4
+#define NI_NUMERICHOST 0x02
+struct addrinfo {
+    int ai_flags;
+    int ai_family;
+    int ai_socktype;
+    int ai_protocol;
+    size_t ai_addrlen;
+    char *ai_canonname;
+    struct sockaddr *ai_addr;
+    struct addrinfo *ai_next;
+};
+#endif
+#define _PR_HAVE_MD_SOCKADDR_IN6
+/* isomorphic to struct in6_addr on Windows */
+struct _md_in6_addr {
+    union {
+        PRUint8  _S6_u8[16];
+        PRUint16 _S6_u16[8];
+    } _S6_un;
+};
+/* isomorphic to struct sockaddr_in6 on Windows */
+struct _md_sockaddr_in6 {
+    PRInt16 sin6_family;
+    PRUint16 sin6_port;
+    PRUint32 sin6_flowinfo;
+    struct _md_in6_addr sin6_addr;
+    PRUint32 sin6_scope_id;
+};
+#endif
+#define _PR_HAVE_THREADSAFE_GETHOST
+#define _PR_HAVE_ATOMIC_OPS
+#define PR_HAVE_WIN32_NAMED_SHARED_MEMORY
+
+/* --- Common User-Thread/Native-Thread Definitions --------------------- */
+
+/* --- Globals --- */
+extern struct PRLock                      *_pr_schedLock;
+
+/* --- Typedefs --- */
+typedef void (*FiberFunc)(void *);
+
+#define PR_NUM_GCREGS           8
+typedef PRInt32	                PR_CONTEXT_TYPE[PR_NUM_GCREGS];
+#define GC_VMBASE               0x40000000
+#define GC_VMLIMIT              0x00FFFFFF
+
+#define _MD_MAGIC_THREAD	0x22222222
+#define _MD_MAGIC_THREADSTACK	0x33333333
+#define _MD_MAGIC_SEGMENT	0x44444444
+#define _MD_MAGIC_DIR		0x55555555
+#define _MD_MAGIC_CV        0x66666666
+
+struct _MDCPU {
+    int              unused;
+};
+
+struct _MDThread {
+    HANDLE           blocked_sema;      /* Threads block on this when waiting
+                                         * for IO or CondVar.
+                                         */
+    PRBool           inCVWaitQueue;     /* PR_TRUE if the thread is in the
+                                         * wait queue of some cond var.
+                                         * PR_FALSE otherwise.  */
+    HANDLE           handle;            /* Win32 thread handle */
+    PRUint32         id;
+    void            *sp;                /* only valid when suspended */
+    PRUint32         magic;             /* for debugging */
+    PR_CONTEXT_TYPE  gcContext;         /* Thread context for GC */
+    struct PRThread *prev, *next;       /* used by the cvar wait queue to
+                                         * chain the PRThread structures
+                                         * together */
+    void (*start)(void *);              /* used by _PR_MD_CREATE_THREAD to
+                                         * pass its 'start' argument to
+                                         * pr_root. */
+};
+
+struct _MDThreadStack {
+    PRUint32           magic;          /* for debugging */
+};
+
+struct _MDSegment {
+    PRUint32           magic;          /* for debugging */
+};
+
+#undef PROFILE_LOCKS
+
+struct _MDDir {
+    HANDLE           d_hdl;
+    WIN32_FIND_DATAA d_entry;
+    PRBool           firstEntry;     /* Is this the entry returned
+                                      * by FindFirstFile()? */
+    PRUint32         magic;          /* for debugging */
+};
+
+#ifdef MOZ_UNICODE
+struct _MDDirUTF16 {
+    HANDLE           d_hdl;
+    WIN32_FIND_DATAW d_entry;
+    PRBool           firstEntry;     /* Is this the entry returned
+                                      * by FindFirstFileW()? */
+    PRUint32         magic;          /* for debugging */
+};
+#endif /* MOZ_UNICODE */
+
+struct _MDCVar {
+    PRUint32 magic;
+    struct PRThread *waitHead, *waitTail;  /* the wait queue: a doubly-
+                                            * linked list of threads
+                                            * waiting on this condition
+                                            * variable */
+    PRIntn nwait;                          /* number of threads in the
+                                            * wait queue */
+};
+
+#define _MD_CV_NOTIFIED_LENGTH 6
+typedef struct _MDNotified _MDNotified;
+struct _MDNotified {
+    PRIntn length;                     /* # of used entries in this
+                                        * structure */
+    struct {
+        struct _MDCVar *cv;            /* the condition variable notified */
+        PRIntn times;                  /* and the number of times notified */
+        struct PRThread *notifyHead;   /* list of threads to wake up */
+    } cv[_MD_CV_NOTIFIED_LENGTH];
+    _MDNotified *link;                 /* link to another of these, or NULL */
+};
+
+struct _MDLock {
+    CRITICAL_SECTION mutex;          /* this is recursive on NT */
+
+    /*
+     * When notifying cvars, there is no point in actually
+     * waking up the threads waiting on the cvars until we've
+     * released the lock.  So, we temporarily record the cvars.
+     * When doing an unlock, we'll then wake up the waiting threads.
+     */
+    struct _MDNotified notified;     /* array of conditions notified */
+#ifdef PROFILE_LOCKS
+    PRInt32 hitcount;
+    PRInt32 misscount;
+#endif
+};
+
+struct _MDSemaphore {
+    HANDLE           sem;
+};
+
+struct _MDFileDesc {
+    PROsfd osfd;     /* The osfd can come from one of three spaces:
+                      * - For stdin, stdout, and stderr, we are using
+                      *   the libc file handle (0, 1, 2), which is an int.
+                      * - For files and pipes, we are using Win32 HANDLE,
+                      *   which is a void*.
+                      * - For sockets, we are using Winsock SOCKET, which
+                      *   is a u_int.
+                      */
+};
+
+struct _MDProcess {
+    HANDLE handle;
+    DWORD id;
+};
+
+/* --- Misc stuff --- */
+#define _MD_GET_SP(thread)            (thread)->md.gcContext[6]
+
+/* --- NT security stuff --- */
+
+extern void _PR_NT_InitSids(void);
+extern void _PR_NT_FreeSids(void);
+extern PRStatus _PR_NT_MakeSecurityDescriptorACL(
+    PRIntn mode,
+    DWORD accessTable[],
+    PSECURITY_DESCRIPTOR *resultSD,
+    PACL *resultACL
+);
+extern void _PR_NT_FreeSecurityDescriptorACL(
+    PSECURITY_DESCRIPTOR pSD, PACL pACL);
+
+/* --- IO stuff --- */
+
+#define _MD_OPEN                      _PR_MD_OPEN
+#define _MD_OPEN_FILE                 _PR_MD_OPEN_FILE
+#define _MD_READ                      _PR_MD_READ
+#define _MD_WRITE                     _PR_MD_WRITE
+#define _MD_WRITEV                    _PR_MD_WRITEV
+#define _MD_LSEEK                     _PR_MD_LSEEK
+#define _MD_LSEEK64                   _PR_MD_LSEEK64
+extern PRInt32 _MD_CloseFile(PROsfd osfd);
+#define _MD_CLOSE_FILE                _MD_CloseFile
+#define _MD_GETFILEINFO               _PR_MD_GETFILEINFO
+#define _MD_GETFILEINFO64             _PR_MD_GETFILEINFO64
+#define _MD_GETOPENFILEINFO           _PR_MD_GETOPENFILEINFO
+#define _MD_GETOPENFILEINFO64         _PR_MD_GETOPENFILEINFO64
+#define _MD_STAT                      _PR_MD_STAT
+#define _MD_RENAME                    _PR_MD_RENAME     
+#define _MD_ACCESS                    _PR_MD_ACCESS     
+#define _MD_DELETE                    _PR_MD_DELETE     
+#define _MD_MKDIR                     _PR_MD_MKDIR      
+#define _MD_MAKE_DIR                  _PR_MD_MAKE_DIR
+#define _MD_RMDIR                     _PR_MD_RMDIR      
+#define _MD_LOCKFILE                  _PR_MD_LOCKFILE
+#define _MD_TLOCKFILE                 _PR_MD_TLOCKFILE
+#define _MD_UNLOCKFILE                _PR_MD_UNLOCKFILE
+
+/* --- UTF16 IO stuff --- */
+#ifdef MOZ_UNICODE
+#define _MD_OPEN_FILE_UTF16           _PR_MD_OPEN_FILE_UTF16
+#define _MD_OPEN_DIR_UTF16            _PR_MD_OPEN_DIR_UTF16
+#define _MD_READ_DIR_UTF16            _PR_MD_READ_DIR_UTF16
+#define _MD_CLOSE_DIR_UTF16           _PR_MD_CLOSE_DIR_UTF16
+#define _MD_GETFILEINFO64_UTF16       _PR_MD_GETFILEINFO64_UTF16
+#endif /* MOZ_UNICODE */
+
+/* --- Socket IO stuff --- */
+extern void _PR_MD_InitSockets(void);
+extern void _PR_MD_CleanupSockets(void);
+#define _MD_EACCES                WSAEACCES
+#define _MD_EADDRINUSE            WSAEADDRINUSE
+#define _MD_EADDRNOTAVAIL         WSAEADDRNOTAVAIL
+#define _MD_EAFNOSUPPORT          WSAEAFNOSUPPORT
+#define _MD_EAGAIN                WSAEWOULDBLOCK
+#define _MD_EALREADY              WSAEALREADY
+#define _MD_EBADF                 WSAEBADF
+#define _MD_ECONNREFUSED          WSAECONNREFUSED
+#define _MD_ECONNRESET            WSAECONNRESET
+#define _MD_EFAULT                WSAEFAULT
+#define _MD_EINPROGRESS           WSAEINPROGRESS
+#define _MD_EINTR                 WSAEINTR
+#define _MD_EINVAL                EINVAL
+#define _MD_EISCONN               WSAEISCONN
+#define _MD_ENETUNREACH           WSAENETUNREACH
+#define _MD_ENOENT                ENOENT
+#define _MD_ENOTCONN              WSAENOTCONN
+#define _MD_ENOTSOCK              WSAENOTSOCK
+#define _MD_EOPNOTSUPP            WSAEOPNOTSUPP
+#define _MD_EWOULDBLOCK           WSAEWOULDBLOCK
+#define _MD_GET_SOCKET_ERROR()    WSAGetLastError()
+#define _MD_SET_SOCKET_ERROR(_err) WSASetLastError(_err)
+
+#define _MD_INIT_FILEDESC(fd)
+extern void _MD_MakeNonblock(PRFileDesc *f);
+#define _MD_MAKE_NONBLOCK             _MD_MakeNonblock
+#define _MD_INIT_FD_INHERITABLE       _PR_MD_INIT_FD_INHERITABLE
+#define _MD_QUERY_FD_INHERITABLE      _PR_MD_QUERY_FD_INHERITABLE
+#define _MD_SHUTDOWN                  _PR_MD_SHUTDOWN
+#define _MD_LISTEN                    _PR_MD_LISTEN
+extern PRInt32 _MD_CloseSocket(PROsfd osfd);
+#define _MD_CLOSE_SOCKET              _MD_CloseSocket
+#define _MD_SENDTO                    _PR_MD_SENDTO
+#define _MD_RECVFROM                  _PR_MD_RECVFROM
+#define _MD_SOCKETPAIR(s, type, proto, sv) -1
+#define _MD_GETSOCKNAME               _PR_MD_GETSOCKNAME
+#define _MD_GETPEERNAME               _PR_MD_GETPEERNAME
+#define _MD_GETSOCKOPT                _PR_MD_GETSOCKOPT
+#define _MD_SETSOCKOPT                _PR_MD_SETSOCKOPT
+#define _MD_SET_FD_INHERITABLE        _PR_MD_SET_FD_INHERITABLE
+#define _MD_SELECT                    select
+#define _MD_FSYNC                     _PR_MD_FSYNC
+#define READ_FD                       1
+#define WRITE_FD                      2
+
+#define _MD_INIT_ATOMIC()
+#if defined(_M_IX86) || defined(_X86_)
+#define _MD_ATOMIC_INCREMENT          _PR_MD_ATOMIC_INCREMENT
+#define _MD_ATOMIC_ADD          	  _PR_MD_ATOMIC_ADD
+#define _MD_ATOMIC_DECREMENT          _PR_MD_ATOMIC_DECREMENT
+#else /* non-x86 processors */
+#define _MD_ATOMIC_INCREMENT(x)       InterlockedIncrement((PLONG)x)
+#define _MD_ATOMIC_ADD(ptr,val)    (InterlockedExchangeAdd((PLONG)ptr, (LONG)val) + val)
+#define _MD_ATOMIC_DECREMENT(x)       InterlockedDecrement((PLONG)x)
+#endif /* x86 */
+#define _MD_ATOMIC_SET(x,y)           InterlockedExchange((PLONG)x, (LONG)y)
+
+#define _MD_INIT_IO                   _PR_MD_INIT_IO
+
+
+/* win95 doesn't have async IO */
+#define _MD_SOCKET                    _PR_MD_SOCKET
+extern PRInt32 _MD_SocketAvailable(PRFileDesc *fd);
+#define _MD_SOCKETAVAILABLE           _MD_SocketAvailable
+#define _MD_PIPEAVAILABLE             _PR_MD_PIPEAVAILABLE
+#define _MD_CONNECT                   _PR_MD_CONNECT
+extern PROsfd _MD_Accept(PRFileDesc *fd, PRNetAddr *raddr, PRUint32 *rlen,
+        PRIntervalTime timeout);
+#define _MD_ACCEPT                    _MD_Accept
+#define _MD_BIND                      _PR_MD_BIND
+#define _MD_RECV                      _PR_MD_RECV
+#define _MD_SEND                      _PR_MD_SEND
+#define _MD_PR_POLL                   _PR_MD_PR_POLL
+
+/* --- Scheduler stuff --- */
+// #define _MD_PAUSE_CPU                 _PR_MD_PAUSE_CPU
+#define _MD_PAUSE_CPU
+
+/* --- DIR stuff --- */
+#define PR_DIRECTORY_SEPARATOR        '\\'
+#define PR_DIRECTORY_SEPARATOR_STR    "\\"
+#define PR_PATH_SEPARATOR		';'
+#define PR_PATH_SEPARATOR_STR		";"
+#define _MD_ERRNO()                   GetLastError()
+#define _MD_OPEN_DIR                  _PR_MD_OPEN_DIR
+#define _MD_CLOSE_DIR                 _PR_MD_CLOSE_DIR
+#define _MD_READ_DIR                  _PR_MD_READ_DIR
+
+/* --- Segment stuff --- */
+#define _MD_INIT_SEGS()
+#define _MD_ALLOC_SEGMENT(seg, size, vaddr)   0
+#define _MD_FREE_SEGMENT(seg)
+
+/* --- Environment Stuff --- */
+#define _MD_GET_ENV                 _PR_MD_GET_ENV
+#define _MD_PUT_ENV                 _PR_MD_PUT_ENV
+
+/* --- Threading Stuff --- */
+#define _MD_DEFAULT_STACK_SIZE            0
+#define _MD_INIT_THREAD             _PR_MD_INIT_THREAD
+#define _MD_INIT_ATTACHED_THREAD    _PR_MD_INIT_THREAD
+#define _MD_CREATE_THREAD           _PR_MD_CREATE_THREAD
+#define _MD_YIELD                   _PR_MD_YIELD
+#define _MD_SET_PRIORITY            _PR_MD_SET_PRIORITY
+#define _MD_SET_CURRENT_THREAD_NAME _PR_MD_SET_CURRENT_THREAD_NAME
+#define _MD_CLEAN_THREAD            _PR_MD_CLEAN_THREAD
+#define _MD_SETTHREADAFFINITYMASK   _PR_MD_SETTHREADAFFINITYMASK
+#define _MD_GETTHREADAFFINITYMASK   _PR_MD_GETTHREADAFFINITYMASK
+#define _MD_EXIT_THREAD             _PR_MD_EXIT_THREAD
+#define _MD_EXIT                    _PR_MD_EXIT
+#define _MD_SUSPEND_THREAD          _PR_MD_SUSPEND_THREAD
+#define _MD_RESUME_THREAD           _PR_MD_RESUME_THREAD
+#define _MD_SUSPEND_CPU             _PR_MD_SUSPEND_CPU
+#define _MD_RESUME_CPU              _PR_MD_RESUME_CPU
+#define _MD_BEGIN_SUSPEND_ALL()
+#define _MD_BEGIN_RESUME_ALL()
+#define _MD_END_SUSPEND_ALL()
+#define _MD_END_RESUME_ALL()
+
+/* --- Lock stuff --- */
+#define _PR_LOCK                      _MD_LOCK
+#define _PR_UNLOCK                    _MD_UNLOCK
+
+#define _MD_NEW_LOCK                  _PR_MD_NEW_LOCK
+#define _MD_FREE_LOCK(lock)           DeleteCriticalSection(&((lock)->mutex))
+#define _MD_LOCK(lock)                EnterCriticalSection(&((lock)->mutex))
+#define _MD_TEST_AND_LOCK(lock)       (EnterCriticalSection(&((lock)->mutex)),0)
+#define _MD_UNLOCK                    _PR_MD_UNLOCK
+
+/* --- lock and cv waiting --- */
+#define _MD_WAIT                      _PR_MD_WAIT
+#define _MD_WAKEUP_WAITER             _PR_MD_WAKEUP_WAITER
+
+/* --- CVar ------------------- */
+#define _MD_WAIT_CV					  _PR_MD_WAIT_CV
+#define _MD_NEW_CV					  _PR_MD_NEW_CV
+#define _MD_FREE_CV					  _PR_MD_FREE_CV
+#define _MD_NOTIFY_CV				  _PR_MD_NOTIFY_CV	
+#define _MD_NOTIFYALL_CV			  _PR_MD_NOTIFYALL_CV
+
+   /* XXXMB- the IOQ stuff is certainly not working correctly yet. */
+// extern  struct _MDLock              _pr_ioq_lock;
+#define _MD_IOQ_LOCK()                
+#define _MD_IOQ_UNLOCK()              
+
+
+/* --- Initialization stuff --- */
+#define _MD_START_INTERRUPTS()
+#define _MD_STOP_INTERRUPTS()
+#define _MD_DISABLE_CLOCK_INTERRUPTS()
+#define _MD_ENABLE_CLOCK_INTERRUPTS()
+#define _MD_BLOCK_CLOCK_INTERRUPTS()
+#define _MD_UNBLOCK_CLOCK_INTERRUPTS()
+#define _MD_EARLY_INIT                _PR_MD_EARLY_INIT
+#define _MD_FINAL_INIT()
+#define _MD_EARLY_CLEANUP()
+#define _MD_INIT_CPUS()
+#define _MD_INIT_RUNNING_CPU(cpu)
+
+struct PRProcess;
+struct PRProcessAttr;
+
+#define _MD_CREATE_PROCESS _PR_CreateWindowsProcess
+extern struct PRProcess * _PR_CreateWindowsProcess(
+    const char *path,
+    char *const *argv,
+    char *const *envp,
+    const struct PRProcessAttr *attr
+);
+
+#define _MD_DETACH_PROCESS _PR_DetachWindowsProcess
+extern PRStatus _PR_DetachWindowsProcess(struct PRProcess *process);
+
+/* --- Wait for a child process to terminate --- */
+#define _MD_WAIT_PROCESS _PR_WaitWindowsProcess
+extern PRStatus _PR_WaitWindowsProcess(struct PRProcess *process, 
+    PRInt32 *exitCode);
+
+#define _MD_KILL_PROCESS _PR_KillWindowsProcess
+extern PRStatus _PR_KillWindowsProcess(struct PRProcess *process);
+
+#define _MD_CLEANUP_BEFORE_EXIT           _PR_MD_CLEANUP_BEFORE_EXIT
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \
+    PR_BEGIN_MACRO \
+    *status = PR_TRUE; \
+    PR_END_MACRO
+#define _MD_SWITCH_CONTEXT
+#define _MD_RESTORE_CONTEXT
+
+/* --- Intervals --- */
+#define _MD_INTERVAL_INIT                 _PR_MD_INTERVAL_INIT
+#define _MD_GET_INTERVAL                  _PR_MD_GET_INTERVAL
+#define _MD_INTERVAL_PER_SEC              _PR_MD_INTERVAL_PER_SEC
+#define _MD_INTERVAL_PER_MILLISEC()       (_PR_MD_INTERVAL_PER_SEC() / 1000)
+#define _MD_INTERVAL_PER_MICROSEC()       (_PR_MD_INTERVAL_PER_SEC() / 1000000)
+
+/* --- Time --- */
+extern void _PR_FileTimeToPRTime(const FILETIME *filetime, PRTime *prtm);
+
+#ifdef WINCE
+extern void _MD_InitTime(void);
+extern void _MD_CleanupTime(void);
+#endif
+
+/* --- Native-Thread Specific Definitions ------------------------------- */
+
+extern struct PRThread * _MD_CURRENT_THREAD(void);
+
+#ifdef _PR_USE_STATIC_TLS
+extern __declspec(thread) struct PRThread *_pr_currentThread;
+#define _MD_GET_ATTACHED_THREAD() _pr_currentThread
+#define _MD_SET_CURRENT_THREAD(_thread) (_pr_currentThread = (_thread))
+
+extern __declspec(thread) struct PRThread *_pr_thread_last_run;
+#define _MD_LAST_THREAD() _pr_thread_last_run
+#define _MD_SET_LAST_THREAD(_thread) (_pr_thread_last_run = 0)
+
+extern __declspec(thread) struct _PRCPU *_pr_currentCPU;
+#define _MD_CURRENT_CPU() _pr_currentCPU
+#define _MD_SET_CURRENT_CPU(_cpu) (_pr_currentCPU = 0)
+#else /* _PR_USE_STATIC_TLS */
+extern DWORD _pr_currentThreadIndex;
+#define _MD_GET_ATTACHED_THREAD() ((PRThread *) TlsGetValue(_pr_currentThreadIndex))
+#define _MD_SET_CURRENT_THREAD(_thread) TlsSetValue(_pr_currentThreadIndex, (_thread))
+
+extern DWORD _pr_lastThreadIndex;
+#define _MD_LAST_THREAD() ((PRThread *) TlsGetValue(_pr_lastThreadIndex))
+#define _MD_SET_LAST_THREAD(_thread) TlsSetValue(_pr_lastThreadIndex, 0)
+
+extern DWORD _pr_currentCPUIndex;
+#define _MD_CURRENT_CPU() ((struct _PRCPU *) TlsGetValue(_pr_currentCPUIndex))
+#define _MD_SET_CURRENT_CPU(_cpu) TlsSetValue(_pr_currentCPUIndex, 0)
+#endif /* _PR_USE_STATIC_TLS */
+
+/* --- Scheduler stuff --- */
+#define LOCK_SCHEDULER()                 0
+#define UNLOCK_SCHEDULER()               0
+#define _PR_LockSched()                	 0
+#define _PR_UnlockSched()                0
+
+/* --- Initialization stuff --- */
+#define _MD_INIT_LOCKS                   _PR_MD_INIT_LOCKS
+
+/* --- Stack stuff --- */
+#define _MD_INIT_STACK(stack, redzone)
+#define _MD_CLEAR_STACK(stack)
+
+/* --- Memory-mapped files stuff --- */
+
+struct _MDFileMap {
+    HANDLE hFileMap;
+    DWORD dwAccess;
+};
+
+extern PRStatus _MD_CreateFileMap(struct PRFileMap *fmap, PRInt64 size);
+#define _MD_CREATE_FILE_MAP _MD_CreateFileMap
+
+extern PRInt32 _MD_GetMemMapAlignment(void);
+#define _MD_GET_MEM_MAP_ALIGNMENT _MD_GetMemMapAlignment
+
+extern void * _MD_MemMap(struct PRFileMap *fmap, PRInt64 offset,
+        PRUint32 len);
+#define _MD_MEM_MAP _MD_MemMap
+
+extern PRStatus _MD_MemUnmap(void *addr, PRUint32 size);
+#define _MD_MEM_UNMAP _MD_MemUnmap
+
+extern PRStatus _MD_CloseFileMap(struct PRFileMap *fmap);
+#define _MD_CLOSE_FILE_MAP _MD_CloseFileMap
+
+extern PRStatus _MD_SyncMemMap(
+    PRFileDesc *fd,
+    void *addr,
+    PRUint32 len);
+#define _MD_SYNC_MEM_MAP _MD_SyncMemMap
+
+/* --- Named semaphores stuff --- */
+#define _PR_HAVE_NAMED_SEMAPHORES
+#define _MD_OPEN_SEMAPHORE            _PR_MD_OPEN_SEMAPHORE
+#define _MD_WAIT_SEMAPHORE            _PR_MD_WAIT_SEMAPHORE
+#define _MD_POST_SEMAPHORE            _PR_MD_POST_SEMAPHORE
+#define _MD_CLOSE_SEMAPHORE           _PR_MD_CLOSE_SEMAPHORE
+#define _MD_DELETE_SEMAPHORE(name)    PR_SUCCESS  /* no op */
+
+#endif /* nspr_win32_defs_h___ */
diff --git a/nsprpub/pr/include/md/_winnt.cfg b/nsprpub/pr/include/md/_winnt.cfg
new file mode 100644
index 0000000000..e2a277fdcd
--- /dev/null
+++ b/nsprpub/pr/include/md/_winnt.cfg
@@ -0,0 +1,224 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#ifndef nspr_cpucfg___
+#define nspr_cpucfg___
+
+#ifndef XP_PC
+#define XP_PC
+#endif
+
+#ifndef WIN32
+#define WIN32
+#endif
+
+#ifndef WINNT
+#define WINNT
+#endif
+
+#define PR_AF_INET6 23  /* same as AF_INET6 */
+
+#if defined(_M_IX86) || defined(_X86_)
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_WORD	4
+#define PR_BYTES_PER_DWORD	8
+#define PR_BYTES_PER_DOUBLE 8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_WORD	32
+#define PR_BITS_PER_DWORD	64
+#define PR_BITS_PER_DOUBLE  64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_WORD_LOG2	5
+#define PR_BITS_PER_DWORD_LOG2	6
+#define PR_BITS_PER_DOUBLE_LOG2 6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_WORD	4
+#define PR_ALIGN_OF_DWORD	8
+#define PR_ALIGN_OF_DOUBLE  4
+#define PR_ALIGN_OF_POINTER 4
+
+#define PR_BYTES_PER_WORD_LOG2	2
+#define PR_BYTES_PER_DWORD_LOG2	2
+
+#elif defined(_M_X64) || defined(_M_AMD64) || defined(_AMD64_)
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+#define PR_BYTES_PER_DOUBLE 8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_WORD    64
+#define PR_BITS_PER_DWORD   64
+#define PR_BITS_PER_DOUBLE  64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_WORD_LOG2	6
+#define PR_BITS_PER_DWORD_LOG2	6
+#define PR_BITS_PER_DOUBLE_LOG2 6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_WORD    8
+#define PR_ALIGN_OF_DWORD   8
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+
+#define PR_BYTES_PER_WORD_LOG2	3
+#define PR_BYTES_PER_DWORD_LOG2	3
+
+#elif defined(_M_IA64) || defined(_IA64_)
+
+#define IS_LITTLE_ENDIAN 1
+#undef  IS_BIG_ENDIAN
+#define IS_64
+
+#define PR_BYTES_PER_BYTE   1
+#define PR_BYTES_PER_SHORT  2
+#define PR_BYTES_PER_INT    4
+#define PR_BYTES_PER_INT64  8
+#define PR_BYTES_PER_LONG   4
+#define PR_BYTES_PER_FLOAT  4
+#define PR_BYTES_PER_WORD   8
+#define PR_BYTES_PER_DWORD  8
+#define PR_BYTES_PER_DOUBLE 8
+
+#define PR_BITS_PER_BYTE    8
+#define PR_BITS_PER_SHORT   16
+#define PR_BITS_PER_INT     32
+#define PR_BITS_PER_INT64   64
+#define PR_BITS_PER_LONG    32
+#define PR_BITS_PER_FLOAT   32
+#define PR_BITS_PER_WORD    64
+#define PR_BITS_PER_DWORD   64
+#define PR_BITS_PER_DOUBLE  64
+
+#define PR_BITS_PER_BYTE_LOG2   3
+#define PR_BITS_PER_SHORT_LOG2  4
+#define PR_BITS_PER_INT_LOG2    5
+#define PR_BITS_PER_INT64_LOG2  6
+#define PR_BITS_PER_LONG_LOG2   5
+#define PR_BITS_PER_FLOAT_LOG2  5
+#define PR_BITS_PER_WORD_LOG2	6
+#define PR_BITS_PER_DWORD_LOG2	6
+#define PR_BITS_PER_DOUBLE_LOG2 6
+
+#define PR_ALIGN_OF_SHORT   2
+#define PR_ALIGN_OF_INT     4
+#define PR_ALIGN_OF_LONG    4
+#define PR_ALIGN_OF_INT64   8
+#define PR_ALIGN_OF_FLOAT   4
+#define PR_ALIGN_OF_WORD    8
+#define PR_ALIGN_OF_DWORD   8
+#define PR_ALIGN_OF_DOUBLE  8
+#define PR_ALIGN_OF_POINTER 8
+
+#define PR_BYTES_PER_WORD_LOG2	3
+#define PR_BYTES_PER_DWORD_LOG2	3
+
+#else /* defined(_M_IX86) || defined(_X86_) */
+
+#error unknown processor architecture
+
+#endif /* defined(_M_IX86) || defined(_X86_) */
+
+#ifndef HAVE_LONG_LONG
+#define HAVE_LONG_LONG
+#endif
+
+#ifndef NO_NSPR_10_SUPPORT
+
+#define BYTES_PER_BYTE      PR_BYTES_PER_BYTE
+#define BYTES_PER_SHORT     PR_BYTES_PER_SHORT
+#define BYTES_PER_INT       PR_BYTES_PER_INT
+#define BYTES_PER_INT64     PR_BYTES_PER_INT64
+#define BYTES_PER_LONG      PR_BYTES_PER_LONG
+#define BYTES_PER_FLOAT     PR_BYTES_PER_FLOAT
+#define BYTES_PER_DOUBLE    PR_BYTES_PER_DOUBLE
+#define BYTES_PER_WORD      PR_BYTES_PER_WORD
+#define BYTES_PER_DWORD     PR_BYTES_PER_DWORD
+
+#define BITS_PER_BYTE       PR_BITS_PER_BYTE
+#define BITS_PER_SHORT      PR_BITS_PER_SHORT
+#define BITS_PER_INT        PR_BITS_PER_INT
+#define BITS_PER_INT64      PR_BITS_PER_INT64
+#define BITS_PER_LONG       PR_BITS_PER_LONG
+#define BITS_PER_FLOAT      PR_BITS_PER_FLOAT
+#define BITS_PER_DOUBLE     PR_BITS_PER_DOUBLE
+#define BITS_PER_WORD       PR_BITS_PER_WORD
+
+#define BITS_PER_BYTE_LOG2  PR_BITS_PER_BYTE_LOG2
+#define BITS_PER_SHORT_LOG2 PR_BITS_PER_SHORT_LOG2
+#define BITS_PER_INT_LOG2   PR_BITS_PER_INT_LOG2
+#define BITS_PER_INT64_LOG2 PR_BITS_PER_INT64_LOG2
+#define BITS_PER_LONG_LOG2  PR_BITS_PER_LONG_LOG2
+#define BITS_PER_FLOAT_LOG2 PR_BITS_PER_FLOAT_LOG2
+#define BITS_PER_DOUBLE_LOG2    PR_BITS_PER_DOUBLE_LOG2
+#define BITS_PER_WORD_LOG2  PR_BITS_PER_WORD_LOG2
+
+#define ALIGN_OF_SHORT      PR_ALIGN_OF_SHORT
+#define ALIGN_OF_INT        PR_ALIGN_OF_INT
+#define ALIGN_OF_LONG       PR_ALIGN_OF_LONG
+#define ALIGN_OF_INT64      PR_ALIGN_OF_INT64
+#define ALIGN_OF_FLOAT      PR_ALIGN_OF_FLOAT
+#define ALIGN_OF_DOUBLE     PR_ALIGN_OF_DOUBLE
+#define ALIGN_OF_POINTER    PR_ALIGN_OF_POINTER
+#define ALIGN_OF_WORD       PR_ALIGN_OF_WORD
+
+#define BYTES_PER_WORD_LOG2		PR_BYTES_PER_WORD_LOG2
+#define BYTES_PER_DWORD_LOG2    PR_BYTES_PER_DWORD_LOG2
+#define WORDS_PER_DWORD_LOG2    PR_WORDS_PER_DWORD_LOG2
+
+#endif /* NO_NSPR_10_SUPPORT */
+
+#endif /* nspr_cpucfg___ */
diff --git a/nsprpub/pr/include/md/_winnt.h b/nsprpub/pr/include/md/_winnt.h
new file mode 100644
index 0000000000..7e5477fdbe
--- /dev/null
+++ b/nsprpub/pr/include/md/_winnt.h
@@ -0,0 +1,599 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nspr_win32_defs_h___
+#define nspr_win32_defs_h___
+
+/* Need to force service-pack 3 extensions to be defined by
+** setting _WIN32_WINNT to NT 4.0 for winsock.h, winbase.h, winnt.h.
+*/ 
+#ifndef  _WIN32_WINNT
+    #define _WIN32_WINNT 0x0400
+#elif   (_WIN32_WINNT < 0x0400)
+    #undef  _WIN32_WINNT
+    #define _WIN32_WINNT 0x0400
+#endif /* _WIN32_WINNT */
+
+#include <windows.h>
+#include <winsock.h>
+#ifdef __MINGW32__
+#include <mswsock.h>
+#endif
+#include <errno.h>
+
+#include "prio.h"
+#include "prclist.h"
+
+/*
+ * Internal configuration macros
+ */
+
+#define PR_LINKER_ARCH      "win32"
+#define _PR_SI_SYSNAME        "WINNT"
+#if defined(_M_IX86) || defined(_X86_)
+#define _PR_SI_ARCHITECTURE   "x86"
+#elif defined(_M_X64) || defined(_M_AMD64) || defined(_AMD64_)
+#define _PR_SI_ARCHITECTURE   "x86-64"
+#elif defined(_M_IA64) || defined(_IA64_)
+#define _PR_SI_ARCHITECTURE   "ia64"
+#else
+#error unknown processor architecture
+#endif
+
+#define HAVE_DLL
+#define HAVE_CUSTOM_USER_THREADS
+#define HAVE_THREAD_AFFINITY
+#define _PR_HAVE_GETADDRINFO
+#define _PR_INET6_PROBE
+#ifndef _PR_INET6
+#define AF_INET6 23
+/* newer ws2tcpip.h provides these */
+#ifndef AI_CANONNAME
+#define AI_CANONNAME 0x2
+#define AI_NUMERICHOST 0x4
+#define NI_NUMERICHOST 0x02
+struct addrinfo {
+    int ai_flags;
+    int ai_family;
+    int ai_socktype;
+    int ai_protocol;
+    size_t ai_addrlen;
+    char *ai_canonname;
+    struct sockaddr *ai_addr;
+    struct addrinfo *ai_next;
+};
+#endif
+#define _PR_HAVE_MD_SOCKADDR_IN6
+/* isomorphic to struct in6_addr on Windows */
+struct _md_in6_addr {
+    union {
+        PRUint8  _S6_u8[16];
+        PRUint16 _S6_u16[8];
+    } _S6_un;
+};
+/* isomorphic to struct sockaddr_in6 on Windows */
+struct _md_sockaddr_in6 {
+    PRInt16 sin6_family;
+    PRUint16 sin6_port;
+    PRUint32 sin6_flowinfo;
+    struct _md_in6_addr sin6_addr;
+    PRUint32 sin6_scope_id;
+};
+#endif
+#define _PR_HAVE_THREADSAFE_GETHOST
+#define _PR_HAVE_ATOMIC_OPS
+#if defined(_M_IX86) || defined(_X86_)
+#define _PR_HAVE_ATOMIC_CAS
+#endif
+#define PR_HAVE_WIN32_NAMED_SHARED_MEMORY
+#define _PR_HAVE_PEEK_BUFFER
+#define _PR_PEEK_BUFFER_MAX (32 * 1024)
+#define _PR_FD_NEED_EMULATE_MSG_PEEK(fd) \
+    (!(fd)->secret->nonblocking && (fd)->secret->inheritable != _PR_TRI_TRUE)
+#define _PR_NEED_SECRET_AF
+
+/* --- Common User-Thread/Native-Thread Definitions --------------------- */
+
+/* --- Globals --- */
+extern struct PRLock                      *_pr_schedLock;
+
+/* --- Typedefs --- */
+typedef void (*FiberFunc)(void *);
+
+#define PR_NUM_GCREGS           8
+typedef PRInt32	                PR_CONTEXT_TYPE[PR_NUM_GCREGS];
+#define GC_VMBASE               0x40000000
+#define GC_VMLIMIT              0x00FFFFFF
+
+#define _MD_MAGIC_THREAD	0x22222222
+#define _MD_MAGIC_THREADSTACK	0x33333333
+#define _MD_MAGIC_SEGMENT	0x44444444
+#define _MD_MAGIC_DIR		0x55555555
+
+struct _MDCPU {
+    int              unused;
+};
+
+enum _MDIOModel {
+    _MD_BlockingIO = 0x38,
+    _MD_MultiWaitIO = 0x49
+};
+
+typedef struct _MDOverlapped {
+    OVERLAPPED overlapped;              /* Used for async I/O */
+
+    enum _MDIOModel ioModel;            /* The I/O model to implement
+                                         * using overlapped I/O.
+                                         */
+    union {
+        struct _MDThread *mdThread;     /* For blocking I/O, this structure
+                                         * is embedded in the _MDThread
+                                         * structure.
+                                         */
+        struct {
+            PRCList links;              /* for group->io_ready list */
+            struct PRRecvWait *desc;    /* For multiwait I/O, this structure
+                                         * is associated with a PRRecvWait
+                                         * structure.
+                                         */
+            struct PRWaitGroup *group;
+            struct TimerEvent *timer;
+            DWORD error;
+        } mw;
+    } data;
+} _MDOverlapped;
+
+struct _MDThread {
+        /* The overlapped structure must be first! */
+    struct _MDOverlapped overlapped;    /* Used for async IO for this thread */
+    void            *acceptex_buf;      /* Used for AcceptEx() */
+    TRANSMIT_FILE_BUFFERS *xmit_bufs;   /* Used for TransmitFile() */
+    HANDLE           blocked_sema;      /* Threads block on this when waiting
+                                         * for IO or CondVar.
+                                         */
+    PRInt32          blocked_io_status; /* Status of the completed IO */
+    PRInt32          blocked_io_bytes;  /* Bytes transferred for completed IO */
+    PRInt32          blocked_io_error;  /* Save error if status is FALSE */
+    HANDLE           handle;
+    PRUint32         id;
+    void            *sp;                /* only valid when suspended */
+    PRUint32         magic;             /* for debugging */
+    PR_CONTEXT_TYPE  gcContext;         /* Thread context for GC */
+	struct _PRCPU    *thr_bound_cpu;		/* thread bound to cpu */
+	PRBool   		 interrupt_disabled;/* thread cannot be interrupted */
+	HANDLE 			 thr_event;			/* For native-threads-only support,
+											thread blocks on this event		*/
+
+    /* The following are used only if this is a fiber */
+    void            *fiber_id;          /* flag whether or not this is a fiber*/
+    FiberFunc        fiber_fn;          /* main fiber routine */
+    void            *fiber_arg;         /* arg to main fiber routine */
+    PRUint32         fiber_stacksize;   /* stacksize for fiber */
+    PRInt32          fiber_last_error;  /* last error for the fiber */
+    void (*start)(void *);              /* used by _PR_MD_CREATE_THREAD to
+                                         * pass its 'start' argument to
+                                         * pr_root. */
+};
+
+struct _MDThreadStack {
+    PRUint32           magic;          /* for debugging */
+};
+
+struct _MDSegment {
+    PRUint32           magic;          /* for debugging */
+};
+
+#undef PROFILE_LOCKS
+
+struct _MDLock {
+    CRITICAL_SECTION mutex;          /* this is recursive on NT */
+#ifdef PROFILE_LOCKS
+    PRInt32 hitcount;
+    PRInt32 misscount;
+#endif
+};
+
+struct _MDDir {
+    HANDLE           d_hdl;
+    WIN32_FIND_DATA  d_entry;
+    PRBool           firstEntry;     /* Is this the entry returned
+                                      * by FindFirstFile()? */
+    PRUint32         magic;          /* for debugging */
+};
+
+struct _MDCVar {
+    PRUint32         unused;
+};
+
+struct _MDSemaphore {
+    HANDLE           sem;
+};
+
+struct _MDFileDesc {
+    PROsfd osfd;     /* The osfd can come from one of three spaces:
+                      * - For stdin, stdout, and stderr, we are using
+                      *   the libc file handle (0, 1, 2), which is an int.
+                      * - For files and pipes, we are using Win32 HANDLE,
+                      *   which is a void*.
+                      * - For sockets, we are using Winsock SOCKET, which
+                      *   is a u_int.
+                      */
+    PRBool io_model_committed;  /* The io model (blocking or nonblocking)
+                                 * for this osfd has been committed and
+                                 * cannot be changed.  The osfd has been
+                                 * either associated with the io
+                                 * completion port or made nonblocking. */
+    PRBool sync_file_io;        /* Use synchronous file I/O on the osfd
+                                 * (a file handle) */
+    PRBool accepted_socket;     /* Is this an accepted socket (on the
+                                 * server side)? */
+    PRNetAddr peer_addr;        /* If this is an accepted socket, cache
+                                 * the peer's address returned by
+                                 * AcceptEx().  This is to work around
+                                 * the bug that getpeername() on an
+                                 * socket accepted by AcceptEx() returns
+                                 * an all-zero net address. */
+};
+
+struct _MDProcess {
+    HANDLE handle;
+    DWORD id;
+};
+
+
+/* --- Misc stuff --- */
+#define _MD_GET_SP(thread)            (thread)->md.gcContext[6]
+
+/* --- NT security stuff --- */
+
+extern void _PR_NT_InitSids(void);
+extern void _PR_NT_FreeSids(void);
+extern PRStatus _PR_NT_MakeSecurityDescriptorACL(
+    PRIntn mode,
+    DWORD accessTable[],
+    PSECURITY_DESCRIPTOR *resultSD,
+    PACL *resultACL
+);
+extern void _PR_NT_FreeSecurityDescriptorACL(
+    PSECURITY_DESCRIPTOR pSD, PACL pACL);
+
+/* --- IO stuff --- */
+
+extern PRInt32 _md_Associate(HANDLE);
+extern PRInt32 _PR_MD_CLOSE(PROsfd osfd, PRBool socket);
+
+#define _MD_OPEN                      _PR_MD_OPEN
+#define _MD_OPEN_FILE                 _PR_MD_OPEN_FILE
+#define _MD_READ                      _PR_MD_READ
+#define _MD_WRITE                     _PR_MD_WRITE
+#define _MD_WRITEV                    _PR_MD_WRITEV
+#define _MD_LSEEK                     _PR_MD_LSEEK
+#define _MD_LSEEK64                   _PR_MD_LSEEK64
+#define _MD_CLOSE_FILE(f)             _PR_MD_CLOSE(f, PR_FALSE)
+#define _MD_GETFILEINFO               _PR_MD_GETFILEINFO
+#define _MD_GETFILEINFO64             _PR_MD_GETFILEINFO64
+#define _MD_GETOPENFILEINFO           _PR_MD_GETOPENFILEINFO
+#define _MD_GETOPENFILEINFO64         _PR_MD_GETOPENFILEINFO64
+#define _MD_STAT                      _PR_MD_STAT
+#define _MD_RENAME                    _PR_MD_RENAME     
+#define _MD_ACCESS                    _PR_MD_ACCESS     
+#define _MD_DELETE                    _PR_MD_DELETE     
+#define _MD_MKDIR                     _PR_MD_MKDIR      
+#define _MD_MAKE_DIR                  _PR_MD_MAKE_DIR
+#define _MD_RMDIR                     _PR_MD_RMDIR      
+#define _MD_LOCKFILE                  _PR_MD_LOCKFILE
+#define _MD_TLOCKFILE                 _PR_MD_TLOCKFILE
+#define _MD_UNLOCKFILE                _PR_MD_UNLOCKFILE
+
+/* --- Socket IO stuff --- */
+#define _MD_GET_SOCKET_ERROR()    WSAGetLastError()
+#define _MD_SET_SOCKET_ERROR(_err) WSASetLastError(_err)
+
+#define _MD_INIT_FILEDESC(fd)
+#define _MD_MAKE_NONBLOCK             _PR_MD_MAKE_NONBLOCK
+#define _MD_INIT_FD_INHERITABLE       _PR_MD_INIT_FD_INHERITABLE
+#define _MD_QUERY_FD_INHERITABLE      _PR_MD_QUERY_FD_INHERITABLE
+#define _MD_SHUTDOWN                  _PR_MD_SHUTDOWN
+#define _MD_LISTEN                    _PR_MD_LISTEN
+#define _MD_CLOSE_SOCKET(s)           _PR_MD_CLOSE(s, PR_TRUE)
+#define _MD_SENDTO                    _PR_MD_SENDTO
+#define _MD_RECVFROM                  _PR_MD_RECVFROM
+#define _MD_SOCKETPAIR(s, type, proto, sv) -1
+#define _MD_GETSOCKNAME               _PR_MD_GETSOCKNAME
+#define _MD_GETPEERNAME               _PR_MD_GETPEERNAME
+#define _MD_GETSOCKOPT                _PR_MD_GETSOCKOPT
+#define _MD_SETSOCKOPT                _PR_MD_SETSOCKOPT
+#define _MD_SELECT                    select
+extern int _PR_NTFiberSafeSelect(int, fd_set *, fd_set *, fd_set *,
+    const struct timeval *);
+#define _MD_FSYNC                     _PR_MD_FSYNC
+#define _MD_SOCKETAVAILABLE           _PR_MD_SOCKETAVAILABLE
+#define _MD_PIPEAVAILABLE             _PR_MD_PIPEAVAILABLE
+#define _MD_SET_FD_INHERITABLE        _PR_MD_SET_FD_INHERITABLE
+
+#define _MD_INIT_ATOMIC()
+#if defined(_M_IX86) || defined(_X86_)
+#define _MD_ATOMIC_INCREMENT          _PR_MD_ATOMIC_INCREMENT
+#define _MD_ATOMIC_ADD          	  _PR_MD_ATOMIC_ADD
+#define _MD_ATOMIC_DECREMENT          _PR_MD_ATOMIC_DECREMENT
+#else /* non-x86 processors */
+#define _MD_ATOMIC_INCREMENT(x)       InterlockedIncrement((PLONG)x)
+#define _MD_ATOMIC_ADD(ptr,val)    (InterlockedExchangeAdd((PLONG)ptr, (LONG)val) + val)
+#define _MD_ATOMIC_DECREMENT(x)       InterlockedDecrement((PLONG)x)
+#endif /* x86 */
+#define _MD_ATOMIC_SET(x,y)           InterlockedExchange((PLONG)x, (LONG)y)
+
+#define _MD_INIT_IO                   _PR_MD_INIT_IO
+#define _MD_SOCKET                    _PR_MD_SOCKET
+#define _MD_CONNECT                   _PR_MD_CONNECT
+
+#define _MD_ACCEPT(s, a, l, to)       \
+        _MD_FAST_ACCEPT(s, a, l, to, PR_FALSE, NULL, NULL)
+#define _MD_FAST_ACCEPT(s, a, l, to, fast, cb, cba) \
+        _PR_MD_FAST_ACCEPT(s, a, l, to, fast, cb, cba)
+#define _MD_ACCEPT_READ(s, ns, ra, buf, l, t) \
+        _MD_FAST_ACCEPT_READ(s, ns, ra, buf, l, t, PR_FALSE, NULL, NULL)
+#define _MD_FAST_ACCEPT_READ(s, ns, ra, buf, l, t, fast, cb, cba) \
+        _PR_MD_FAST_ACCEPT_READ(s, ns, ra, buf, l, t, fast, cb, cba)
+#define _MD_UPDATE_ACCEPT_CONTEXT     _PR_MD_UPDATE_ACCEPT_CONTEXT
+
+#define _MD_BIND                      _PR_MD_BIND
+#define _MD_RECV                      _PR_MD_RECV
+#define _MD_SEND                      _PR_MD_SEND
+#define _MD_SENDFILE              	  _PR_MD_SENDFILE
+#define _MD_PR_POLL                   _PR_MD_PR_POLL
+
+/* --- Scheduler stuff --- */
+#define _MD_PAUSE_CPU                   _PR_MD_PAUSE_CPU
+
+/* --- DIR stuff --- */
+#define PR_DIRECTORY_SEPARATOR        '\\'
+#define PR_DIRECTORY_SEPARATOR_STR    "\\"
+#define PR_PATH_SEPARATOR		';'
+#define PR_PATH_SEPARATOR_STR		";"
+#define _MD_ERRNO()                   GetLastError()
+#define _MD_OPEN_DIR                  _PR_MD_OPEN_DIR
+#define _MD_CLOSE_DIR                 _PR_MD_CLOSE_DIR
+#define _MD_READ_DIR                  _PR_MD_READ_DIR
+
+/* --- Segment stuff --- */
+#define _MD_INIT_SEGS()
+#define _MD_ALLOC_SEGMENT(seg, size, vaddr)   0
+#define _MD_FREE_SEGMENT(seg)
+
+/* --- Environment Stuff --- */
+#define _MD_GET_ENV                 _PR_MD_GET_ENV
+#define _MD_PUT_ENV                 _PR_MD_PUT_ENV
+
+/* --- Threading Stuff --- */
+#define _MD_DEFAULT_STACK_SIZE            0
+#define _MD_INIT_THREAD             _PR_MD_INIT_THREAD
+#define _MD_INIT_ATTACHED_THREAD    _PR_MD_INIT_THREAD
+#define _MD_CREATE_THREAD           _PR_MD_CREATE_THREAD
+#define _MD_JOIN_THREAD             _PR_MD_JOIN_THREAD
+#define _MD_END_THREAD              _PR_MD_END_THREAD
+#define _MD_YIELD                   _PR_MD_YIELD
+#define _MD_SET_PRIORITY            _PR_MD_SET_PRIORITY
+#define _MD_SET_CURRENT_THREAD_NAME _PR_MD_SET_CURRENT_THREAD_NAME
+#define _MD_CLEAN_THREAD            _PR_MD_CLEAN_THREAD
+#define _MD_SETTHREADAFFINITYMASK   _PR_MD_SETTHREADAFFINITYMASK
+#define _MD_GETTHREADAFFINITYMASK   _PR_MD_GETTHREADAFFINITYMASK
+#define _MD_EXIT_THREAD             _PR_MD_EXIT_THREAD
+#define _MD_SUSPEND_THREAD          _PR_MD_SUSPEND_THREAD
+#define _MD_RESUME_THREAD           _PR_MD_RESUME_THREAD
+#define _MD_SUSPEND_CPU             _PR_MD_SUSPEND_CPU
+#define _MD_RESUME_CPU              _PR_MD_RESUME_CPU
+#define _MD_BEGIN_SUSPEND_ALL()
+#define _MD_BEGIN_RESUME_ALL()
+#define _MD_END_SUSPEND_ALL()
+#define _MD_END_RESUME_ALL()
+
+extern void _PR_Unblock_IO_Wait(PRThread *thr);
+
+/* --- Lock stuff --- */
+#define _MD_NEW_LOCK(lock)            (InitializeCriticalSection(&((lock)->mutex)),PR_SUCCESS)
+#define _MD_FREE_LOCK(lock)           DeleteCriticalSection(&((lock)->mutex))
+#ifndef PROFILE_LOCKS
+#define _MD_LOCK(lock)                EnterCriticalSection(&((lock)->mutex))
+#define _MD_TEST_AND_LOCK(lock)       (TryEnterCriticalSection(&((lock)->mutex))== FALSE)
+#define _MD_UNLOCK(lock)              LeaveCriticalSection(&((lock)->mutex))
+#else
+#define _MD_LOCK(lock)                 \
+    PR_BEGIN_MACRO \
+    BOOL rv = TryEnterCriticalSection(&((lock)->mutex)); \
+    if (rv == TRUE) { \
+        InterlockedIncrement(&((lock)->hitcount)); \
+    } else { \
+        InterlockedIncrement(&((lock)->misscount)); \
+        EnterCriticalSection(&((lock)->mutex)); \
+    } \
+    PR_END_MACRO
+#define _MD_TEST_AND_LOCK(lock)       0  /* XXXMB */
+#define _MD_UNLOCK(lock)              LeaveCriticalSection(&((lock)->mutex))
+#endif
+#define _PR_LOCK                      _MD_LOCK
+#define _PR_UNLOCK					  _MD_UNLOCK
+
+/* --- lock and cv waiting --- */
+#define _MD_WAIT                      _PR_MD_WAIT
+#define _MD_WAKEUP_WAITER             _PR_MD_WAKEUP_WAITER
+
+   /* XXXMB- the IOQ stuff is certainly not working correctly yet. */
+extern  struct _MDLock              _pr_ioq_lock;
+#define _MD_IOQ_LOCK()                _MD_LOCK(&_pr_ioq_lock)
+#define _MD_IOQ_UNLOCK()              _MD_UNLOCK(&_pr_ioq_lock)
+
+
+/* --- Initialization stuff --- */
+#define _MD_START_INTERRUPTS()
+#define _MD_STOP_INTERRUPTS()
+#define _MD_DISABLE_CLOCK_INTERRUPTS()
+#define _MD_ENABLE_CLOCK_INTERRUPTS()
+#define _MD_BLOCK_CLOCK_INTERRUPTS()
+#define _MD_UNBLOCK_CLOCK_INTERRUPTS()
+#define _MD_EARLY_INIT                _PR_MD_EARLY_INIT
+#define _MD_FINAL_INIT()
+#define _MD_EARLY_CLEANUP()
+#define _MD_INIT_CPUS()
+#define _MD_INIT_RUNNING_CPU(cpu)
+
+struct PRProcess;
+struct PRProcessAttr;
+
+/* --- Create a new process --- */
+#define _MD_CREATE_PROCESS _PR_CreateWindowsProcess
+extern struct PRProcess * _PR_CreateWindowsProcess(
+    const char *path,
+    char *const *argv,
+    char *const *envp,
+    const struct PRProcessAttr *attr
+);
+
+#define _MD_DETACH_PROCESS _PR_DetachWindowsProcess
+extern PRStatus _PR_DetachWindowsProcess(struct PRProcess *process);
+
+/* --- Wait for a child process to terminate --- */
+#define _MD_WAIT_PROCESS _PR_WaitWindowsProcess
+extern PRStatus _PR_WaitWindowsProcess(struct PRProcess *process, 
+    PRInt32 *exitCode);
+
+#define _MD_KILL_PROCESS _PR_KillWindowsProcess
+extern PRStatus _PR_KillWindowsProcess(struct PRProcess *process);
+
+/* --- User Threading stuff --- */
+#define HAVE_FIBERS
+#define _MD_CREATE_USER_THREAD            _PR_MD_CREATE_USER_THREAD
+#define _MD_CREATE_PRIMORDIAL_USER_THREAD _PR_MD_CREATE_PRIMORDIAL_USER_THREAD
+#define _MD_CLEANUP_BEFORE_EXIT           _PR_MD_CLEANUP_BEFORE_EXIT
+#define _MD_EXIT                          _PR_MD_EXIT
+#define _MD_INIT_CONTEXT                  _PR_MD_INIT_CONTEXT
+#define _MD_SWITCH_CONTEXT                _PR_MD_SWITCH_CONTEXT
+#define _MD_RESTORE_CONTEXT               _PR_MD_RESTORE_CONTEXT
+
+/* --- Intervals --- */
+#define _MD_INTERVAL_INIT                 _PR_MD_INTERVAL_INIT
+#define _MD_GET_INTERVAL                  _PR_MD_GET_INTERVAL
+#define _MD_INTERVAL_PER_SEC              _PR_MD_INTERVAL_PER_SEC
+#define _MD_INTERVAL_PER_MILLISEC()       (_PR_MD_INTERVAL_PER_SEC() / 1000)
+#define _MD_INTERVAL_PER_MICROSEC()       (_PR_MD_INTERVAL_PER_SEC() / 1000000)
+
+/* --- Time --- */
+extern void _PR_FileTimeToPRTime(const FILETIME *filetime, PRTime *prtm);
+
+/* --- Native-Thread Specific Definitions ------------------------------- */
+
+extern BOOL _pr_use_static_tls;
+
+extern __declspec(thread) struct PRThread *_pr_current_fiber;
+extern DWORD _pr_currentFiberIndex;
+
+#define _MD_GET_ATTACHED_THREAD() \
+    (_pr_use_static_tls ? _pr_current_fiber \
+    : (PRThread *) TlsGetValue(_pr_currentFiberIndex))
+
+extern struct PRThread * _MD_CURRENT_THREAD(void);
+
+#define _MD_SET_CURRENT_THREAD(_thread) \
+    PR_BEGIN_MACRO \
+        if (_pr_use_static_tls) { \
+            _pr_current_fiber = (_thread); \
+        } else { \
+            TlsSetValue(_pr_currentFiberIndex, (_thread)); \
+        } \
+    PR_END_MACRO
+
+extern __declspec(thread) struct PRThread *_pr_fiber_last_run;
+extern DWORD _pr_lastFiberIndex;
+
+#define _MD_LAST_THREAD() \
+    (_pr_use_static_tls ? _pr_fiber_last_run \
+    : (PRThread *) TlsGetValue(_pr_lastFiberIndex))
+
+#define _MD_SET_LAST_THREAD(_thread) \
+    PR_BEGIN_MACRO \
+        if (_pr_use_static_tls) { \
+            _pr_fiber_last_run = (_thread); \
+        } else { \
+            TlsSetValue(_pr_lastFiberIndex, (_thread)); \
+        } \
+    PR_END_MACRO
+
+extern __declspec(thread) struct _PRCPU *_pr_current_cpu;
+extern DWORD _pr_currentCPUIndex;
+
+#define _MD_CURRENT_CPU() \
+    (_pr_use_static_tls ? _pr_current_cpu \
+    : (struct _PRCPU *) TlsGetValue(_pr_currentCPUIndex))
+
+#define _MD_SET_CURRENT_CPU(_cpu) \
+    PR_BEGIN_MACRO \
+        if (_pr_use_static_tls) { \
+            _pr_current_cpu = (_cpu); \
+        } else { \
+            TlsSetValue(_pr_currentCPUIndex, (_cpu)); \
+        } \
+    PR_END_MACRO
+
+extern __declspec(thread) PRUintn _pr_ints_off;
+extern DWORD _pr_intsOffIndex;
+
+#define _MD_GET_INTSOFF() \
+    (_pr_use_static_tls ? _pr_ints_off \
+    : (PRUintn) TlsGetValue(_pr_intsOffIndex))
+
+#define _MD_SET_INTSOFF(_val) \
+    PR_BEGIN_MACRO \
+        if (_pr_use_static_tls) { \
+            _pr_ints_off = (_val); \
+        } else { \
+            TlsSetValue(_pr_intsOffIndex, (LPVOID) (_val)); \
+        } \
+    PR_END_MACRO
+
+/* --- Initialization stuff --- */
+#define _MD_INIT_LOCKS()
+
+/* --- Stack stuff --- */
+#define _MD_INIT_STACK(stack, redzone)
+#define _MD_CLEAR_STACK(stack)
+
+/* --- Memory-mapped files stuff --- */
+
+struct _MDFileMap {
+    HANDLE hFileMap;
+    DWORD dwAccess;
+};
+
+extern PRStatus _MD_CreateFileMap(struct PRFileMap *fmap, PRInt64 size);
+#define _MD_CREATE_FILE_MAP _MD_CreateFileMap
+
+extern PRInt32 _MD_GetMemMapAlignment(void);
+#define _MD_GET_MEM_MAP_ALIGNMENT _MD_GetMemMapAlignment
+
+extern void * _MD_MemMap(struct PRFileMap *fmap, PRInt64 offset,
+        PRUint32 len);
+#define _MD_MEM_MAP _MD_MemMap
+
+extern PRStatus _MD_MemUnmap(void *addr, PRUint32 size);
+#define _MD_MEM_UNMAP _MD_MemUnmap
+
+extern PRStatus _MD_CloseFileMap(struct PRFileMap *fmap);
+#define _MD_CLOSE_FILE_MAP _MD_CloseFileMap
+
+extern PRStatus _MD_SyncMemMap(
+    PRFileDesc *fd,
+    void *addr,
+    PRUint32 len);
+#define _MD_SYNC_MEM_MAP _MD_SyncMemMap
+
+/* --- Named semaphores stuff --- */
+#define _PR_HAVE_NAMED_SEMAPHORES
+#define _MD_OPEN_SEMAPHORE            _PR_MD_OPEN_SEMAPHORE
+#define _MD_WAIT_SEMAPHORE            _PR_MD_WAIT_SEMAPHORE
+#define _MD_POST_SEMAPHORE            _PR_MD_POST_SEMAPHORE
+#define _MD_CLOSE_SEMAPHORE           _PR_MD_CLOSE_SEMAPHORE
+#define _MD_DELETE_SEMAPHORE(name)    PR_SUCCESS  /* no op */
+
+#endif /* nspr_win32_defs_h___ */
diff --git a/nsprpub/pr/include/md/prosdep.h b/nsprpub/pr/include/md/prosdep.h
new file mode 100644
index 0000000000..94d89450a4
--- /dev/null
+++ b/nsprpub/pr/include/md/prosdep.h
@@ -0,0 +1,113 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef prosdep_h___
+#define prosdep_h___
+
+/*
+** Get OS specific header information
+*/
+#include "prtypes.h"
+
+PR_BEGIN_EXTERN_C
+
+#ifdef XP_PC
+
+#include "md/_pcos.h"
+#ifdef WINNT
+#include "md/_winnt.h"
+#include "md/_win32_errors.h"
+#elif defined(WIN95) || defined(WINCE)
+#include "md/_win95.h"
+#include "md/_win32_errors.h"
+#elif defined(OS2)
+#include "md/_os2.h"
+#include "md/_os2_errors.h"
+#else
+#error unknown Windows platform
+#endif
+
+#elif defined(XP_UNIX)
+
+#if defined(AIX)
+#include "md/_aix.h"
+
+#elif defined(FREEBSD)
+#include "md/_freebsd.h"
+
+#elif defined(NETBSD)
+#include "md/_netbsd.h"
+
+#elif defined(OPENBSD)
+#include "md/_openbsd.h"
+
+#elif defined(BSDI)
+#include "md/_bsdi.h"
+
+#elif defined(HPUX)
+#include "md/_hpux.h"
+
+#elif defined(IRIX)
+#include "md/_irix.h"
+
+#elif defined(LINUX) || defined(__GNU__) || defined(__GLIBC__)
+#include "md/_linux.h"
+
+#elif defined(OSF1)
+#include "md/_osf1.h"
+
+#elif defined(DARWIN)
+#include "md/_darwin.h"
+
+#elif defined(SOLARIS)
+#include "md/_solaris.h"
+
+#elif defined(SCO)
+#include "md/_scoos.h"
+
+#elif defined(UNIXWARE)
+#include "md/_unixware.h"
+
+#elif defined(DGUX)
+#include "md/_dgux.h"
+
+#elif defined(QNX)
+#include "md/_qnx.h"
+
+#elif defined(NTO)
+#include "md/_nto.h"
+
+#elif defined(RISCOS)
+#include "md/_riscos.h"
+
+#elif defined(SYMBIAN)
+#include "md/_symbian.h"
+
+#else
+#error unknown Unix flavor
+
+#endif
+
+#include "md/_unixos.h"
+#include "md/_unix_errors.h"
+
+#elif defined(XP_BEOS)
+
+#include "md/_beos.h"
+#include "md/_unix_errors.h"
+
+#else
+
+#error "The platform is not BeOS, Unix, Windows, or Mac"
+
+#endif
+
+#ifdef _PR_PTHREADS
+#include "md/_pth.h"
+#endif
+
+PR_END_EXTERN_C
+
+#endif /* prosdep_h___ */