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/* -*- 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/. */
#include "jit/mips-shared/Architecture-mips-shared.h"
#include <fcntl.h>
#include <unistd.h>
#include "jit/RegisterSets.h"
#define HWCAP_MIPS (1 << 28)
#define HWCAP_LOONGSON (1 << 27)
#define HWCAP_FPU (1 << 0)
namespace js {
namespace jit {
static uint32_t
get_mips_flags()
{
uint32_t flags = HWCAP_MIPS;
#if defined(JS_SIMULATOR_MIPS32) || defined(JS_SIMULATOR_MIPS64)
flags |= HWCAP_FPU;
#else
# ifdef __linux__
FILE* fp = fopen("/proc/cpuinfo", "r");
if (!fp)
return flags;
char buf[1024];
memset(buf, 0, sizeof(buf));
fread(buf, sizeof(char), sizeof(buf) - 1, fp);
fclose(fp);
if (strstr(buf, "FPU"))
flags |= HWCAP_FPU;
if (strstr(buf, "Loongson"))
flags |= HWCAP_LOONGSON;
# endif
#endif // JS_SIMULATOR_MIPS32 || JS_SIMULATOR_MIPS64
return flags;
}
static bool check_fpu()
{
return mips_private::Flags & HWCAP_FPU;
}
static bool check_loongson()
{
return mips_private::Flags & HWCAP_LOONGSON;
}
namespace mips_private {
// Cache a local copy so we only have to read /proc/cpuinfo once.
uint32_t Flags = get_mips_flags();
bool hasFPU = check_fpu();;
bool isLoongson = check_loongson();
}
Registers::Code
Registers::FromName(const char* name)
{
for (size_t i = 0; i < Total; i++) {
if (strcmp(GetName(i), name) == 0)
return Code(i);
}
return Invalid;
}
} // namespace ion
} // namespace js
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