diff options
Diffstat (limited to 'deps/v8/src/base/cpu.cc')
| -rw-r--r-- | deps/v8/src/base/cpu.cc | 90 |
1 files changed, 89 insertions, 1 deletions
diff --git a/deps/v8/src/base/cpu.cc b/deps/v8/src/base/cpu.cc index daf3302365..84cd231f61 100644 --- a/deps/v8/src/base/cpu.cc +++ b/deps/v8/src/base/cpu.cc @@ -16,6 +16,15 @@ #if V8_OS_QNX #include <sys/syspage.h> // cpuinfo #endif +#if V8_OS_LINUX && V8_HOST_ARCH_PPC +#include <elf.h> +#endif +#if V8_OS_AIX +#include <sys/systemcfg.h> // _system_configuration +#ifndef POWER_8 +#define POWER_8 0x10000 +#endif +#endif #if V8_OS_POSIX #include <unistd.h> // sysconf() #endif @@ -312,6 +321,8 @@ CPU::CPU() has_ssse3_(false), has_sse41_(false), has_sse42_(false), + is_atom_(false), + has_osxsave_(false), has_avx_(false), has_fma3_(false), has_idiva_(false), @@ -360,8 +371,23 @@ CPU::CPU() has_ssse3_ = (cpu_info[2] & 0x00000200) != 0; has_sse41_ = (cpu_info[2] & 0x00080000) != 0; has_sse42_ = (cpu_info[2] & 0x00100000) != 0; + has_osxsave_ = (cpu_info[2] & 0x08000000) != 0; has_avx_ = (cpu_info[2] & 0x10000000) != 0; - if (has_avx_) has_fma3_ = (cpu_info[2] & 0x00001000) != 0; + has_fma3_ = (cpu_info[2] & 0x00001000) != 0; + + if (family_ == 0x6) { + switch (model_) { + case 0x1c: // SLT + case 0x26: + case 0x36: + case 0x27: + case 0x35: + case 0x37: // SLM + case 0x4a: + case 0x4d: + is_atom_ = true; + } + } } #if V8_HOST_ARCH_IA32 @@ -589,7 +615,69 @@ CPU::CPU() delete[] part; } +#elif V8_HOST_ARCH_PPC + +#ifndef USE_SIMULATOR +#if V8_OS_LINUX + // Read processor info from /proc/self/auxv. + char* auxv_cpu_type = NULL; + FILE* fp = fopen("/proc/self/auxv", "r"); + if (fp != NULL) { +#if V8_TARGET_ARCH_PPC64 + Elf64_auxv_t entry; +#else + Elf32_auxv_t entry; #endif + for (;;) { + size_t n = fread(&entry, sizeof(entry), 1, fp); + if (n == 0 || entry.a_type == AT_NULL) { + break; + } + if (entry.a_type == AT_PLATFORM) { + auxv_cpu_type = reinterpret_cast<char*>(entry.a_un.a_val); + break; + } + } + fclose(fp); + } + + part_ = -1; + if (auxv_cpu_type) { + if (strcmp(auxv_cpu_type, "power8") == 0) { + part_ = PPC_POWER8; + } else if (strcmp(auxv_cpu_type, "power7") == 0) { + part_ = PPC_POWER7; + } else if (strcmp(auxv_cpu_type, "power6") == 0) { + part_ = PPC_POWER6; + } else if (strcmp(auxv_cpu_type, "power5") == 0) { + part_ = PPC_POWER5; + } else if (strcmp(auxv_cpu_type, "ppc970") == 0) { + part_ = PPC_G5; + } else if (strcmp(auxv_cpu_type, "ppc7450") == 0) { + part_ = PPC_G4; + } else if (strcmp(auxv_cpu_type, "pa6t") == 0) { + part_ = PPC_PA6T; + } + } + +#elif V8_OS_AIX + switch (_system_configuration.implementation) { + case POWER_8: + part_ = PPC_POWER8; + break; + case POWER_7: + part_ = PPC_POWER7; + break; + case POWER_6: + part_ = PPC_POWER6; + break; + case POWER_5: + part_ = PPC_POWER5; + break; + } +#endif // V8_OS_AIX +#endif // !USE_SIMULATOR +#endif // V8_HOST_ARCH_PPC } } } // namespace v8::base |