| /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- |
| * vim: set ts=8 sts=4 et sw=4 tw=99: |
| * 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/Architecture-mips.h" |
| |
| #include <elf.h> |
| |
| #include <fcntl.h> |
| #include <unistd.h> |
| |
| #define HWCAP_MIPS (1 << 31) |
| #define HWCAP_FPU (1 << 0) |
| |
| namespace js { |
| namespace jit { |
| |
| uint32_t GetMIPSFlags() |
| { |
| static bool isSet = false; |
| static uint32_t flags = 0; |
| if (isSet) |
| return flags; |
| #if WTF_OS_LINUX |
| FILE *fp = fopen("/proc/cpuinfo", "r"); |
| if (!fp) |
| return false; |
| |
| 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; |
| |
| isSet = true; |
| return flags; |
| #endif |
| |
| return false; |
| } |
| |
| bool hasFPU() |
| { |
| return js::jit::GetMIPSFlags() & HWCAP_FPU; |
| } |
| |
| } // namespace ion |
| } // namespace js |
| |
