diff options
Diffstat (limited to 'sysdeps/x86_64/multiarch/init-arch.h')
| -rw-r--r-- | sysdeps/x86_64/multiarch/init-arch.h | 177 |
1 files changed, 5 insertions, 172 deletions
diff --git a/sysdeps/x86_64/multiarch/init-arch.h b/sysdeps/x86_64/multiarch/init-arch.h index e6b5ba5530..2b9988ebc3 100644 --- a/sysdeps/x86_64/multiarch/init-arch.h +++ b/sysdeps/x86_64/multiarch/init-arch.h @@ -15,175 +15,8 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ -#define bit_Fast_Rep_String (1 << 0) -#define bit_Fast_Copy_Backward (1 << 1) -#define bit_Slow_BSF (1 << 2) -#define bit_Fast_Unaligned_Load (1 << 4) -#define bit_Prefer_PMINUB_for_stringop (1 << 5) -#define bit_AVX_Usable (1 << 6) -#define bit_FMA_Usable (1 << 7) -#define bit_FMA4_Usable (1 << 8) -#define bit_Slow_SSE4_2 (1 << 9) -#define bit_AVX2_Usable (1 << 10) -#define bit_AVX_Fast_Unaligned_Load (1 << 11) - -/* CPUID Feature flags. */ - -/* COMMON_CPUID_INDEX_1. */ -#define bit_SSE2 (1 << 26) -#define bit_SSSE3 (1 << 9) -#define bit_SSE4_1 (1 << 19) -#define bit_SSE4_2 (1 << 20) -#define bit_OSXSAVE (1 << 27) -#define bit_AVX (1 << 28) -#define bit_POPCOUNT (1 << 23) -#define bit_FMA (1 << 12) -#define bit_FMA4 (1 << 16) - -/* COMMON_CPUID_INDEX_7. */ -#define bit_RTM (1 << 11) -#define bit_AVX2 (1 << 5) - -/* XCR0 Feature flags. */ -#define bit_XMM_state (1 << 1) -#define bit_YMM_state (2 << 1) - -/* The integer bit array index for the first set of internal feature bits. */ -# define FEATURE_INDEX_1 0 - -/* The current maximum size of the feature integer bit array. */ -# define FEATURE_INDEX_MAX 1 - -#ifdef __ASSEMBLER__ - -# include <ifunc-defines.h> - -# define index_SSE2 COMMON_CPUID_INDEX_1*CPUID_SIZE+CPUID_EDX_OFFSET -# define index_SSSE3 COMMON_CPUID_INDEX_1*CPUID_SIZE+CPUID_ECX_OFFSET -# define index_SSE4_1 COMMON_CPUID_INDEX_1*CPUID_SIZE+CPUID_ECX_OFFSET -# define index_SSE4_2 COMMON_CPUID_INDEX_1*CPUID_SIZE+CPUID_ECX_OFFSET -# define index_AVX COMMON_CPUID_INDEX_1*CPUID_SIZE+CPUID_ECX_OFFSET -# define index_AVX2 COMMON_CPUID_INDEX_7*CPUID_SIZE+CPUID_EBX_OFFSET - -# define index_Fast_Rep_String FEATURE_INDEX_1*FEATURE_SIZE -# define index_Fast_Copy_Backward FEATURE_INDEX_1*FEATURE_SIZE -# define index_Slow_BSF FEATURE_INDEX_1*FEATURE_SIZE -# define index_Fast_Unaligned_Load FEATURE_INDEX_1*FEATURE_SIZE -# define index_Prefer_PMINUB_for_stringop FEATURE_INDEX_1*FEATURE_SIZE -# define index_AVX_Usable FEATURE_INDEX_1*FEATURE_SIZE -# define index_FMA_Usable FEATURE_INDEX_1*FEATURE_SIZE -# define index_FMA4_Usable FEATURE_INDEX_1*FEATURE_SIZE -# define index_Slow_SSE4_2 FEATURE_INDEX_1*FEATURE_SIZE -# define index_AVX2_Usable FEATURE_INDEX_1*FEATURE_SIZE -# define index_AVX_Fast_Unaligned_Load FEATURE_INDEX_1*FEATURE_SIZE - -#else /* __ASSEMBLER__ */ - -# include <sys/param.h> - -enum - { - COMMON_CPUID_INDEX_1 = 0, - COMMON_CPUID_INDEX_7, - COMMON_CPUID_INDEX_80000001, /* for AMD */ - /* Keep the following line at the end. */ - COMMON_CPUID_INDEX_MAX - }; - -extern struct cpu_features -{ - enum cpu_features_kind - { - arch_kind_unknown = 0, - arch_kind_intel, - arch_kind_amd, - arch_kind_other - } kind; - int max_cpuid; - struct cpuid_registers - { - unsigned int eax; - unsigned int ebx; - unsigned int ecx; - unsigned int edx; - } cpuid[COMMON_CPUID_INDEX_MAX]; - unsigned int family; - unsigned int model; - unsigned int feature[FEATURE_INDEX_MAX]; -} __cpu_features attribute_hidden; - - -extern void __init_cpu_features (void) attribute_hidden; -# define INIT_ARCH() \ - do \ - if (__cpu_features.kind == arch_kind_unknown) \ - __init_cpu_features (); \ - while (0) - -/* Used from outside libc.so to get access to the CPU features structure. */ -extern const struct cpu_features *__get_cpu_features (void) - __attribute__ ((const)); - -# if IS_IN (libc) -# define __get_cpu_features() (&__cpu_features) -# endif - -# define HAS_CPU_FEATURE(idx, reg, bit) \ - ((__get_cpu_features ()->cpuid[idx].reg & (bit)) != 0) - -/* Following are the feature tests used throughout libc. */ - -/* CPUID_* evaluates to true if the feature flag is enabled. - We always use &__cpu_features because the HAS_CPUID_* macros - are called only within __init_cpu_features, where we can't - call __get_cpu_features without infinite recursion. */ -# define HAS_CPUID_FLAG(idx, reg, bit) \ - (((&__cpu_features)->cpuid[idx].reg & (bit)) != 0) - -# define CPUID_OSXSAVE \ - HAS_CPUID_FLAG (COMMON_CPUID_INDEX_1, ecx, bit_OSXSAVE) -# define CPUID_AVX \ - HAS_CPUID_FLAG (COMMON_CPUID_INDEX_1, ecx, bit_AVX) -# define CPUID_FMA \ - HAS_CPUID_FLAG (COMMON_CPUID_INDEX_1, ecx, bit_FMA) -# define CPUID_FMA4 \ - HAS_CPUID_FLAG (COMMON_CPUID_INDEX_80000001, ecx, bit_FMA4) -# define CPUID_RTM \ - HAS_CPUID_FLAG (COMMON_CPUID_INDEX_7, ebx, bit_RTM) -# define CPUID_AVX2 \ - HAS_CPUID_FLAG (COMMON_CPUID_INDEX_7, ebx, bit_AVX2) - -/* HAS_* evaluates to true if we may use the feature at runtime. */ -# define HAS_SSE2 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, edx, bit_SSE2) -# define HAS_POPCOUNT HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_POPCOUNT) -# define HAS_SSSE3 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_SSSE3) -# define HAS_SSE4_1 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_SSE4_1) -# define HAS_SSE4_2 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, bit_SSE4_2) -# define HAS_RTM HAS_CPU_FEATURE (COMMON_CPUID_INDEX_7, ebx, bit_RTM) - -# define index_Fast_Rep_String FEATURE_INDEX_1 -# define index_Fast_Copy_Backward FEATURE_INDEX_1 -# define index_Slow_BSF FEATURE_INDEX_1 -# define index_Fast_Unaligned_Load FEATURE_INDEX_1 -# define index_Prefer_PMINUB_for_stringop FEATURE_INDEX_1 -# define index_AVX_Usable FEATURE_INDEX_1 -# define index_FMA_Usable FEATURE_INDEX_1 -# define index_FMA4_Usable FEATURE_INDEX_1 -# define index_Slow_SSE4_2 FEATURE_INDEX_1 -# define index_AVX2_Usable FEATURE_INDEX_1 -# define index_AVX_Fast_Unaligned_Load FEATURE_INDEX_1 - -# define HAS_ARCH_FEATURE(name) \ - ((__get_cpu_features ()->feature[index_##name] & (bit_##name)) != 0) - -# define HAS_FAST_REP_STRING HAS_ARCH_FEATURE (Fast_Rep_String) -# define HAS_FAST_COPY_BACKWARD HAS_ARCH_FEATURE (Fast_Copy_Backward) -# define HAS_SLOW_BSF HAS_ARCH_FEATURE (Slow_BSF) -# define HAS_FAST_UNALIGNED_LOAD HAS_ARCH_FEATURE (Fast_Unaligned_Load) -# define HAS_AVX HAS_ARCH_FEATURE (AVX_Usable) -# define HAS_AVX2 HAS_ARCH_FEATURE (AVX2_Usable) -# define HAS_FMA HAS_ARCH_FEATURE (FMA_Usable) -# define HAS_FMA4 HAS_ARCH_FEATURE (FMA4_Usable) -# define HAS_AVX_FAST_UNALIGNED_LOAD HAS_ARCH_FEATURE (AVX_Fast_Unaligned_Load) - -#endif /* __ASSEMBLER__ */ +#ifdef __ASSEMBLER__ +# include <cpu-features.h> +#else +# include <ldsodefs.h> +#endif |