1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/jit/mips/Architecture-mips.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,76 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
1.5 + * vim: set ts=8 sts=4 et sw=4 tw=99:
1.6 + * This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#include "jit/mips/Architecture-mips.h"
1.11 +
1.12 +#include <elf.h>
1.13 +
1.14 +#include <fcntl.h>
1.15 +#include <unistd.h>
1.16 +
1.17 +#define HWCAP_MIPS (1 << 31)
1.18 +#define HWCAP_FPU (1 << 0)
1.19 +
1.20 +namespace js {
1.21 +namespace jit {
1.22 +
1.23 +uint32_t GetMIPSFlags()
1.24 +{
1.25 + static bool isSet = false;
1.26 + static uint32_t flags = 0;
1.27 + if (isSet)
1.28 + return flags;
1.29 +#if WTF_OS_LINUX
1.30 + FILE *fp = fopen("/proc/cpuinfo", "r");
1.31 + if (!fp)
1.32 + return false;
1.33 +
1.34 + char buf[1024];
1.35 + memset(buf, 0, sizeof(buf));
1.36 + fread(buf, sizeof(char), sizeof(buf)-1, fp);
1.37 + fclose(fp);
1.38 + if (strstr(buf, "FPU"))
1.39 + flags |= HWCAP_FPU;
1.40 +
1.41 + isSet = true;
1.42 + return flags;
1.43 +#endif
1.44 +
1.45 + return false;
1.46 +}
1.47 +
1.48 +bool hasFPU()
1.49 +{
1.50 + return js::jit::GetMIPSFlags() & HWCAP_FPU;
1.51 +}
1.52 +
1.53 +Registers::Code
1.54 +Registers::FromName(const char *name)
1.55 +{
1.56 + for (size_t i = 0; i < Total; i++) {
1.57 + if (strcmp(GetName(i), name) == 0)
1.58 + return Code(i);
1.59 + }
1.60 +
1.61 + return Invalid;
1.62 +}
1.63 +
1.64 +FloatRegisters::Code
1.65 +FloatRegisters::FromName(const char *name)
1.66 +{
1.67 + for (size_t i = 0; i < Total; i++) {
1.68 + if (strcmp(GetName(i), name) == 0)
1.69 + return Code(i);
1.70 + }
1.71 +
1.72 + return Invalid;
1.73 +}
1.74 +
1.75 +
1.76 +
1.77 +} // namespace ion
1.78 +} // namespace js
1.79 +
