diff options
Diffstat (limited to 'deps/v8/src/base/cpu.cc')
| -rw-r--r-- | deps/v8/src/base/cpu.cc | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/deps/v8/src/base/cpu.cc b/deps/v8/src/base/cpu.cc index bae1afe7d1..c0e9e707aa 100644 --- a/deps/v8/src/base/cpu.cc +++ b/deps/v8/src/base/cpu.cc @@ -4,6 +4,10 @@ #include "src/base/cpu.h" +#if defined(STARBOARD) +#include "starboard/cpu_features.h" +#endif + #if V8_LIBC_MSVCRT #include <intrin.h> // __cpuid() #endif @@ -347,6 +351,54 @@ static bool HasListItem(const char* list, const char* item) { #endif // V8_HOST_ARCH_ARM || V8_HOST_ARCH_ARM64 || // V8_HOST_ARCH_MIPS || V8_HOST_ARCH_MIPS64 +#if defined(STARBOARD) + +bool CPU::StarboardDetectCPU() { +#if (SB_API_VERSION >= 11) + SbCPUFeatures features; + if (!SbCPUFeaturesGet(&features)) { + return false; + } + architecture_ = features.arm.architecture_generation; + switch (features.architecture) { + case kSbCPUFeaturesArchitectureArm: + case kSbCPUFeaturesArchitectureArm64: + has_neon_ = features.arm.has_neon; + has_thumb2_ = features.arm.has_thumb2; + has_vfp_ = features.arm.has_vfp; + has_vfp3_ = features.arm.has_vfp3; + has_vfp3_d32_ = features.arm.has_vfp3_d32; + has_idiva_ = features.arm.has_idiva; + break; + case kSbCPUFeaturesArchitectureX86: + case kSbCPUFeaturesArchitectureX86_64: + // Following flags are mandatory for V8 + has_cmov_ = features.x86.has_cmov; + has_sse2_ = features.x86.has_sse2; + // These flags are optional + has_sse3_ = features.x86.has_sse3; + has_ssse3_ = features.x86.has_ssse3; + has_sse41_ = features.x86.has_sse41; + has_sahf_ = features.x86.has_sahf; + has_avx_ = features.x86.has_avx; + has_fma3_ = features.x86.has_fma3; + has_bmi1_ = features.x86.has_bmi1; + has_bmi2_ = features.x86.has_bmi2; + has_lzcnt_ = features.x86.has_lzcnt; + has_popcnt_ = features.x86.has_popcnt; + break; + default: + return false; + } + + return true; +#else // SB_API_VERSION >= 11 + return false; +#endif +} + +#endif + CPU::CPU() : stepping_(0), model_(0), @@ -389,6 +441,13 @@ CPU::CPU() has_non_stop_time_stamp_counter_(false), has_msa_(false) { memcpy(vendor_, "Unknown", 8); + +#if defined(STARBOARD) + if (StarboardDetectCPU()) { + return; + } +#endif + #if V8_HOST_ARCH_IA32 || V8_HOST_ARCH_X64 int cpu_info[4]; |