michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  * vim: set ts=8 sts=4 et sw=4 tw=99:
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "jit/mips/Architecture-mips.h"
michael@0: 
michael@0: #include <elf.h>
michael@0: 
michael@0: #include <fcntl.h>
michael@0: #include <unistd.h>
michael@0: 
michael@0: #define HWCAP_MIPS (1 << 31)
michael@0: #define HWCAP_FPU (1 << 0)
michael@0: 
michael@0: namespace js {
michael@0: namespace jit {
michael@0: 
michael@0: uint32_t GetMIPSFlags()
michael@0: {
michael@0:     static bool isSet = false;
michael@0:     static uint32_t flags = 0;
michael@0:     if (isSet)
michael@0:         return flags;
michael@0: #if WTF_OS_LINUX
michael@0:     FILE *fp = fopen("/proc/cpuinfo", "r");
michael@0:     if (!fp)
michael@0:         return false;
michael@0: 
michael@0:     char buf[1024];
michael@0:     memset(buf, 0, sizeof(buf));
michael@0:     fread(buf, sizeof(char), sizeof(buf)-1, fp);
michael@0:     fclose(fp);
michael@0:     if (strstr(buf, "FPU"))
michael@0:         flags |= HWCAP_FPU;
michael@0: 
michael@0:     isSet = true;
michael@0:     return flags;
michael@0: #endif
michael@0: 
michael@0:     return false;
michael@0: }
michael@0: 
michael@0: bool hasFPU()
michael@0: {
michael@0:     return js::jit::GetMIPSFlags() & HWCAP_FPU;
michael@0: }
michael@0: 
michael@0: Registers::Code
michael@0: Registers::FromName(const char *name)
michael@0: {
michael@0:     for (size_t i = 0; i < Total; i++) {
michael@0:         if (strcmp(GetName(i), name) == 0)
michael@0:             return Code(i);
michael@0:     }
michael@0: 
michael@0:     return Invalid;
michael@0: }
michael@0: 
michael@0: FloatRegisters::Code
michael@0: FloatRegisters::FromName(const char *name)
michael@0: {
michael@0:     for (size_t i = 0; i < Total; i++) {
michael@0:         if (strcmp(GetName(i), name) == 0)
michael@0:             return Code(i);
michael@0:     }
michael@0: 
michael@0:     return Invalid;
michael@0: }
michael@0: 
michael@0: 
michael@0: 
michael@0: } // namespace ion
michael@0: } // namespace js
michael@0: