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Per arch build and inlining of cpuid_x86.

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This commit is contained in:
Guillaume Chatelet
2019-01-15 10:52:56 +01:00
parent b6e7c32c90
commit e8e5610fc4
7 changed files with 98 additions and 117 deletions
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46
src/hwcaps.c
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@ -40,23 +40,13 @@
#define HWCAPS_REGULAR_LINUX
#endif
#if defined(HWCAPS_ANDROID_MIPS_OR_ARM) || defined(HWCAPS_REGULAR_LINUX)
#define HWCAPS_SUPPORTED
#endif
////////////////////////////////////////////////////////////////////////////////
// Implementation of GetElfHwcapFromGetauxval
////////////////////////////////////////////////////////////////////////////////
// On Linux we simply use getauxval.
#if defined(HWCAPS_REGULAR_LINUX)
#include <dlfcn.h>
#include <sys/auxv.h>
static unsigned long GetElfHwcapFromGetauxval(uint32_t hwcap_type) {
return getauxval(hwcap_type);
}
#endif // defined(HWCAPS_REGULAR_LINUX)
#if defined(CPU_FEATURES_MOCK_GET_ELF_HWCAP_FROM_GETAUXVAL)
// Implementation will be provided by test/hwcaps_for_testing.cc.
#elif defined(HWCAPS_ANDROID_MIPS_OR_ARM)
// On Android we probe the system's C library for a 'getauxval' function and
// call it if it exits, or return 0 for failure. This function is available
// since API level 20.
@ -71,7 +61,7 @@ static unsigned long GetElfHwcapFromGetauxval(uint32_t hwcap_type) {
// implementation does not parse /proc/self/auxv. Instead it depends on values
// that are passed by the kernel at process-init time to the C runtime
// initialization layer.
#if defined(HWCAPS_ANDROID_MIPS_OR_ARM)
#include <dlfcn.h>
#define AT_HWCAP 16
#define AT_HWCAP2 26
@ -101,12 +91,19 @@ static uint32_t GetElfHwcapFromGetauxval(uint32_t hwcap_type) {
dlclose(libc_handle);
return ret;
}
#endif // defined(HWCAPS_ANDROID_MIPS_OR_ARM)
#elif defined(CPU_FEATURES_OS_LINUX_OR_ANDROID)
// On Regular Linux we simply use getauxval.
#include <dlfcn.h>
#include <sys/auxv.h>
static unsigned long GetElfHwcapFromGetauxval(uint32_t hwcap_type) {
return getauxval(hwcap_type);
}
#else
#error "This platform does not provide hardware capabilities."
#endif
#if defined(HWCAPS_SUPPORTED)
////////////////////////////////////////////////////////////////////////////////
// Implementation of GetHardwareCapabilities for Android and Linux
////////////////////////////////////////////////////////////////////////////////
// Implementation of GetHardwareCapabilities for OS that provide
// GetElfHwcapFromGetauxval().
// Fallback when getauxval is not available, retrieves hwcaps from
// "/proc/self/auxv".
@ -174,14 +171,3 @@ PlatformType CpuFeatures_GetPlatformType(void) {
sizeof(type.base_platform));
return type;
}
#else // (defined(HWCAPS_SUPPORTED)
////////////////////////////////////////////////////////////////////////////////
// Implementation of GetHardwareCapabilities for unsupported platforms.
////////////////////////////////////////////////////////////////////////////////
const HardwareCapabilities kEmptyHardwareCapabilities;
HardwareCapabilities CpuFeatures_GetHardwareCapabilities(void) {
return kEmptyHardwareCapabilities;
}
#endif