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lizzie 2026-05-24 02:24:10 +00:00
parent b8bf558994
commit fe256f276e
1 changed files with 8 additions and 30 deletions
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38
src/common/cpu_features.cpp
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@ -15,10 +15,11 @@
#include <vector> #include <vector>
#ifdef _WIN32 #ifdef _WIN32
#include <windows.h> #include <windows.h>
#endif #elif defined(__DragonFly__) || defined(__FreeBSD__)
#if defined(__DragonFly__) || defined(__FreeBSD__)
#include <sys/types.h> #include <sys/types.h>
#include <machine/cpufunc.h> #include <machine/cpufunc.h>
#elif defined(__ANDROID__)
#include <sys/system_properties.h>
#endif #endif
#include "common/steady_clock.h" #include "common/steady_clock.h"
@ -31,24 +32,8 @@
#include "common/x64/rdtsc.h" #include "common/x64/rdtsc.h"
#ifdef _MSC_VER #ifdef _MSC_VER
#include <intrin.h> #include <intrin.h>
static inline u64 xgetbv(u32 index) { static inline u64 xgetbv(u32 index) { return _xgetbv(index); }
return _xgetbv(index);
}
#else #else
#endif
#ifdef __ANDROID__
#include <sys/system_properties.h>
#endif
#ifdef ARCHITECTURE_x86_64
#include "common/x64/rdtsc.h"
#endif
namespace Common {
#ifdef ARCHITECTURE_x86_64
namespace {
static inline void __cpuidex(int info[4], u32 function_id, u32 subfunction_id) { static inline void __cpuidex(int info[4], u32 function_id, u32 subfunction_id) {
#if defined(__DragonFly__) || defined(__FreeBSD__) #if defined(__DragonFly__) || defined(__FreeBSD__)
// Despite the name, this is just do_cpuid() with ECX as second input. // Despite the name, this is just do_cpuid() with ECX as second input.
@ -61,11 +46,7 @@ static inline void __cpuidex(int info[4], u32 function_id, u32 subfunction_id) {
: "a"(function_id), "c"(subfunction_id)); : "a"(function_id), "c"(subfunction_id));
#endif #endif
} }
static inline void __cpuid(int info[4], u32 function_id) { return __cpuidex(info, function_id, 0); }
static inline void __cpuid(int info[4], u32 function_id) {
return __cpuidex(info, function_id, 0);
}
#define _XCR_XFEATURE_ENABLED_MASK 0 #define _XCR_XFEATURE_ENABLED_MASK 0
static inline u64 xgetbv(u32 index) { static inline u64 xgetbv(u32 index) {
u32 eax, edx; u32 eax, edx;
@ -73,8 +54,10 @@ static inline u64 xgetbv(u32 index) {
return ((u64)edx << 32) | eax; return ((u64)edx << 32) | eax;
} }
#endif // _MSC_VER #endif // _MSC_VER
} #endif
namespace Common {
#ifdef ARCHITECTURE_x86_64
CPUCaps::Manufacturer CPUCaps::ParseManufacturer(std::string_view brand_string) { CPUCaps::Manufacturer CPUCaps::ParseManufacturer(std::string_view brand_string) {
if (brand_string == "GenuineIntel") { if (brand_string == "GenuineIntel") {
return Manufacturer::Intel; return Manufacturer::Intel;
@ -310,15 +293,12 @@ u64 WallClock::NsToTicks(std::chrono::nanoseconds ns) const {
} }
#elif defined(HAS_NCE) #elif defined(HAS_NCE)
namespace { namespace {
[[nodiscard]] Common::WallClock::FactorType GetFixedPointFactor(u64 num, u64 den) noexcept { [[nodiscard]] Common::WallClock::FactorType GetFixedPointFactor(u64 num, u64 den) noexcept {
return (Common::WallClock::FactorType(num) << 64) / den; return (Common::WallClock::FactorType(num) << 64) / den;
} }
[[nodiscard]] u64 MultiplyHigh(u64 m, Common::WallClock::FactorType factor) noexcept { [[nodiscard]] u64 MultiplyHigh(u64 m, Common::WallClock::FactorType factor) noexcept {
return static_cast<u64>((m * factor) >> 64); return static_cast<u64>((m * factor) >> 64);
} }
[[nodiscard]] s64 GetHostCNTFRQ() noexcept { [[nodiscard]] s64 GetHostCNTFRQ() noexcept {
u64 cntfrq_el0 = 0; u64 cntfrq_el0 = 0;
#ifdef ANDROID #ifdef ANDROID
@ -343,7 +323,6 @@ namespace {
return cntfrq_el0; return cntfrq_el0;
#endif #endif
} }
} // namespace } // namespace
WallClock::WallClock(bool invariant_, u64 rdtsc_frequency_) noexcept { WallClock::WallClock(bool invariant_, u64 rdtsc_frequency_) noexcept {
@ -442,5 +421,4 @@ const WallClock g_wall_clock = [] {
return WallClock(true, 1); return WallClock(true, 1);
#endif #endif
}(); }();
} // namespace Common } // namespace Common