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-rw-r--r--media/libjpeg/simd/jquant-mmx.asm273
1 files changed, 0 insertions, 273 deletions
diff --git a/media/libjpeg/simd/jquant-mmx.asm b/media/libjpeg/simd/jquant-mmx.asm
deleted file mode 100644
index aed6071bfc..0000000000
--- a/media/libjpeg/simd/jquant-mmx.asm
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@@ -1,273 +0,0 @@
-;
-; jquant.asm - sample data conversion and quantization (MMX)
-;
-; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
-;
-; Based on the x86 SIMD extension for IJG JPEG library
-; Copyright (C) 1999-2006, MIYASAKA Masaru.
-; For conditions of distribution and use, see copyright notice in jsimdext.inc
-;
-; This file should be assembled with NASM (Netwide Assembler),
-; can *not* be assembled with Microsoft's MASM or any compatible
-; assembler (including Borland's Turbo Assembler).
-; NASM is available from http://nasm.sourceforge.net/ or
-; http://sourceforge.net/project/showfiles.php?group_id=6208
-;
-; [TAB8]
-
-%include "jsimdext.inc"
-%include "jdct.inc"
-
-; --------------------------------------------------------------------------
- SECTION SEG_TEXT
- BITS 32
-;
-; Load data into workspace, applying unsigned->signed conversion
-;
-; GLOBAL(void)
-; jsimd_convsamp_mmx (JSAMPARRAY sample_data, JDIMENSION start_col,
-; DCTELEM *workspace);
-;
-
-%define sample_data ebp+8 ; JSAMPARRAY sample_data
-%define start_col ebp+12 ; JDIMENSION start_col
-%define workspace ebp+16 ; DCTELEM *workspace
-
- align 16
- global EXTN(jsimd_convsamp_mmx)
-
-EXTN(jsimd_convsamp_mmx):
- push ebp
- mov ebp,esp
- push ebx
-; push ecx ; need not be preserved
-; push edx ; need not be preserved
- push esi
- push edi
-
- pxor mm6,mm6 ; mm6=(all 0's)
- pcmpeqw mm7,mm7
- psllw mm7,7 ; mm7={0xFF80 0xFF80 0xFF80 0xFF80}
-
- mov esi, JSAMPARRAY [sample_data] ; (JSAMPROW *)
- mov eax, JDIMENSION [start_col]
- mov edi, POINTER [workspace] ; (DCTELEM *)
- mov ecx, DCTSIZE/4
- alignx 16,7
-.convloop:
- mov ebx, JSAMPROW [esi+0*SIZEOF_JSAMPROW] ; (JSAMPLE *)
- mov edx, JSAMPROW [esi+1*SIZEOF_JSAMPROW] ; (JSAMPLE *)
-
- movq mm0, MMWORD [ebx+eax*SIZEOF_JSAMPLE] ; mm0=(01234567)
- movq mm1, MMWORD [edx+eax*SIZEOF_JSAMPLE] ; mm1=(89ABCDEF)
-
- mov ebx, JSAMPROW [esi+2*SIZEOF_JSAMPROW] ; (JSAMPLE *)
- mov edx, JSAMPROW [esi+3*SIZEOF_JSAMPROW] ; (JSAMPLE *)
-
- movq mm2, MMWORD [ebx+eax*SIZEOF_JSAMPLE] ; mm2=(GHIJKLMN)
- movq mm3, MMWORD [edx+eax*SIZEOF_JSAMPLE] ; mm3=(OPQRSTUV)
-
- movq mm4,mm0
- punpcklbw mm0,mm6 ; mm0=(0123)
- punpckhbw mm4,mm6 ; mm4=(4567)
- movq mm5,mm1
- punpcklbw mm1,mm6 ; mm1=(89AB)
- punpckhbw mm5,mm6 ; mm5=(CDEF)
-
- paddw mm0,mm7
- paddw mm4,mm7
- paddw mm1,mm7
- paddw mm5,mm7
-
- movq MMWORD [MMBLOCK(0,0,edi,SIZEOF_DCTELEM)], mm0
- movq MMWORD [MMBLOCK(0,1,edi,SIZEOF_DCTELEM)], mm4
- movq MMWORD [MMBLOCK(1,0,edi,SIZEOF_DCTELEM)], mm1
- movq MMWORD [MMBLOCK(1,1,edi,SIZEOF_DCTELEM)], mm5
-
- movq mm0,mm2
- punpcklbw mm2,mm6 ; mm2=(GHIJ)
- punpckhbw mm0,mm6 ; mm0=(KLMN)
- movq mm4,mm3
- punpcklbw mm3,mm6 ; mm3=(OPQR)
- punpckhbw mm4,mm6 ; mm4=(STUV)
-
- paddw mm2,mm7
- paddw mm0,mm7
- paddw mm3,mm7
- paddw mm4,mm7
-
- movq MMWORD [MMBLOCK(2,0,edi,SIZEOF_DCTELEM)], mm2
- movq MMWORD [MMBLOCK(2,1,edi,SIZEOF_DCTELEM)], mm0
- movq MMWORD [MMBLOCK(3,0,edi,SIZEOF_DCTELEM)], mm3
- movq MMWORD [MMBLOCK(3,1,edi,SIZEOF_DCTELEM)], mm4
-
- add esi, byte 4*SIZEOF_JSAMPROW
- add edi, byte 4*DCTSIZE*SIZEOF_DCTELEM
- dec ecx
- jnz short .convloop
-
- emms ; empty MMX state
-
- pop edi
- pop esi
-; pop edx ; need not be preserved
-; pop ecx ; need not be preserved
- pop ebx
- pop ebp
- ret
-
-; --------------------------------------------------------------------------
-;
-; Quantize/descale the coefficients, and store into coef_block
-;
-; This implementation is based on an algorithm described in
-; "How to optimize for the Pentium family of microprocessors"
-; (http://www.agner.org/assem/).
-;
-; GLOBAL(void)
-; jsimd_quantize_mmx (JCOEFPTR coef_block, DCTELEM *divisors,
-; DCTELEM *workspace);
-;
-
-%define RECIPROCAL(m,n,b) MMBLOCK(DCTSIZE*0+(m),(n),(b),SIZEOF_DCTELEM)
-%define CORRECTION(m,n,b) MMBLOCK(DCTSIZE*1+(m),(n),(b),SIZEOF_DCTELEM)
-%define SCALE(m,n,b) MMBLOCK(DCTSIZE*2+(m),(n),(b),SIZEOF_DCTELEM)
-%define SHIFT(m,n,b) MMBLOCK(DCTSIZE*3+(m),(n),(b),SIZEOF_DCTELEM)
-
-%define coef_block ebp+8 ; JCOEFPTR coef_block
-%define divisors ebp+12 ; DCTELEM *divisors
-%define workspace ebp+16 ; DCTELEM *workspace
-
- align 16
- global EXTN(jsimd_quantize_mmx)
-
-EXTN(jsimd_quantize_mmx):
- push ebp
- mov ebp,esp
-; push ebx ; unused
-; push ecx ; unused
-; push edx ; need not be preserved
- push esi
- push edi
-
- mov esi, POINTER [workspace]
- mov edx, POINTER [divisors]
- mov edi, JCOEFPTR [coef_block]
- mov ah, 2
- alignx 16,7
-.quantloop1:
- mov al, DCTSIZE2/8/2
- alignx 16,7
-.quantloop2:
- movq mm2, MMWORD [MMBLOCK(0,0,esi,SIZEOF_DCTELEM)]
- movq mm3, MMWORD [MMBLOCK(0,1,esi,SIZEOF_DCTELEM)]
-
- movq mm0,mm2
- movq mm1,mm3
-
- psraw mm2,(WORD_BIT-1) ; -1 if value < 0, 0 otherwise
- psraw mm3,(WORD_BIT-1)
-
- pxor mm0,mm2 ; val = -val
- pxor mm1,mm3
- psubw mm0,mm2
- psubw mm1,mm3
-
- ;
- ; MMX is an annoyingly crappy instruction set. It has two
- ; misfeatures that are causing problems here:
- ;
- ; - All multiplications are signed.
- ;
- ; - The second operand for the shifts is not treated as packed.
- ;
- ;
- ; We work around the first problem by implementing this algorithm:
- ;
- ; unsigned long unsigned_multiply(unsigned short x, unsigned short y)
- ; {
- ; enum { SHORT_BIT = 16 };
- ; signed short sx = (signed short) x;
- ; signed short sy = (signed short) y;
- ; signed long sz;
- ;
- ; sz = (long) sx * (long) sy; /* signed multiply */
- ;
- ; if (sx < 0) sz += (long) sy << SHORT_BIT;
- ; if (sy < 0) sz += (long) sx << SHORT_BIT;
- ;
- ; return (unsigned long) sz;
- ; }
- ;
- ; (note that a negative sx adds _sy_ and vice versa)
- ;
- ; For the second problem, we replace the shift by a multiplication.
- ; Unfortunately that means we have to deal with the signed issue again.
- ;
-
- paddw mm0, MMWORD [CORRECTION(0,0,edx)] ; correction + roundfactor
- paddw mm1, MMWORD [CORRECTION(0,1,edx)]
-
- movq mm4,mm0 ; store current value for later
- movq mm5,mm1
- pmulhw mm0, MMWORD [RECIPROCAL(0,0,edx)] ; reciprocal
- pmulhw mm1, MMWORD [RECIPROCAL(0,1,edx)]
- paddw mm0,mm4 ; reciprocal is always negative (MSB=1),
- paddw mm1,mm5 ; so we always need to add the initial value
- ; (input value is never negative as we
- ; inverted it at the start of this routine)
-
- ; here it gets a bit tricky as both scale
- ; and mm0/mm1 can be negative
- movq mm6, MMWORD [SCALE(0,0,edx)] ; scale
- movq mm7, MMWORD [SCALE(0,1,edx)]
- movq mm4,mm0
- movq mm5,mm1
- pmulhw mm0,mm6
- pmulhw mm1,mm7
-
- psraw mm6,(WORD_BIT-1) ; determine if scale is negative
- psraw mm7,(WORD_BIT-1)
-
- pand mm6,mm4 ; and add input if it is
- pand mm7,mm5
- paddw mm0,mm6
- paddw mm1,mm7
-
- psraw mm4,(WORD_BIT-1) ; then check if negative input
- psraw mm5,(WORD_BIT-1)
-
- pand mm4, MMWORD [SCALE(0,0,edx)] ; and add scale if it is
- pand mm5, MMWORD [SCALE(0,1,edx)]
- paddw mm0,mm4
- paddw mm1,mm5
-
- pxor mm0,mm2 ; val = -val
- pxor mm1,mm3
- psubw mm0,mm2
- psubw mm1,mm3
-
- movq MMWORD [MMBLOCK(0,0,edi,SIZEOF_DCTELEM)], mm0
- movq MMWORD [MMBLOCK(0,1,edi,SIZEOF_DCTELEM)], mm1
-
- add esi, byte 8*SIZEOF_DCTELEM
- add edx, byte 8*SIZEOF_DCTELEM
- add edi, byte 8*SIZEOF_JCOEF
- dec al
- jnz near .quantloop2
- dec ah
- jnz near .quantloop1 ; to avoid branch misprediction
-
- emms ; empty MMX state
-
- pop edi
- pop esi
-; pop edx ; need not be preserved
-; pop ecx ; unused
-; pop ebx ; unused
- pop ebp
- ret
-
-; For some reason, the OS X linker does not honor the request to align the
-; segment unless we do this.
- align 16
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