diff options
Diffstat (limited to 'sysdeps/x86/cpu-features.h')
| -rw-r--r-- | sysdeps/x86/cpu-features.h | 34 |
1 files changed, 27 insertions, 7 deletions
diff --git a/sysdeps/x86/cpu-features.h b/sysdeps/x86/cpu-features.h index a032a2e168..b7f7898d11 100644 --- a/sysdeps/x86/cpu-features.h +++ b/sysdeps/x86/cpu-features.h @@ -37,10 +37,9 @@ #define bit_arch_Prefer_No_VZEROUPPER (1 << 17) #define bit_arch_Fast_Unaligned_Copy (1 << 18) #define bit_arch_Prefer_ERMS (1 << 19) -#define bit_arch_Use_dl_runtime_resolve_opt (1 << 20) -#define bit_arch_Use_dl_runtime_resolve_slow (1 << 21) -#define bit_arch_Prefer_No_AVX512 (1 << 22) -#define bit_arch_MathVec_Prefer_No_AVX512 (1 << 23) +#define bit_arch_Prefer_No_AVX512 (1 << 20) +#define bit_arch_MathVec_Prefer_No_AVX512 (1 << 21) +#define bit_arch_XSAVEC_Usable (1 << 22) /* CPUID Feature flags. */ @@ -91,8 +90,18 @@ /* The current maximum size of the feature integer bit array. */ #define FEATURE_INDEX_MAX 1 -#ifndef __ASSEMBLER__ +/* Offset for fxsave/xsave area used by _dl_runtime_resolve. Also need + space to preserve RCX, RDX, RSI, RDI, R8, R9 and RAX. It must be + aligned to 16 bytes for fxsave and 64 bytes for xsave. */ +#define STATE_SAVE_OFFSET (8 * 7 + 8) +/* Save SSE, AVX, AVX512, mask and bound registers. */ +#define STATE_SAVE_MASK \ + ((1 << 1) | (1 << 2) | (1 << 3) | (1 << 5) | (1 << 6) | (1 << 7)) + +#ifdef __ASSEMBLER__ +# include <cpu-features-offsets.h> +#else /* __ASSEMBLER__ */ enum { COMMON_CPUID_INDEX_1 = 0, @@ -121,6 +130,18 @@ struct cpu_features } cpuid[COMMON_CPUID_INDEX_MAX]; unsigned int family; unsigned int model; + /* The state size for XSAVEC or XSAVE. The type must be unsigned long + int so that we use + + sub xsave_state_size_offset(%rip) %RSP_LP + + in _dl_runtime_resolve. */ + unsigned long int xsave_state_size; + /* The full state size for XSAVE when XSAVEC is disabled by + + GLIBC_TUNABLES=glibc.tune.hwcaps=-XSAVEC_Usable + */ + unsigned int xsave_state_full_size; unsigned int feature[FEATURE_INDEX_MAX]; /* Data cache size for use in memory and string routines, typically L1 size. */ @@ -237,10 +258,9 @@ extern const struct cpu_features *__get_cpu_features (void) # define index_arch_Prefer_No_VZEROUPPER FEATURE_INDEX_1 # define index_arch_Fast_Unaligned_Copy FEATURE_INDEX_1 # define index_arch_Prefer_ERMS FEATURE_INDEX_1 -# define index_arch_Use_dl_runtime_resolve_opt FEATURE_INDEX_1 -# define index_arch_Use_dl_runtime_resolve_slow FEATURE_INDEX_1 # define index_arch_Prefer_No_AVX512 FEATURE_INDEX_1 # define index_arch_MathVec_Prefer_No_AVX512 FEATURE_INDEX_1 +# define index_arch_XSAVEC_Usable FEATURE_INDEX_1 #endif /* !__ASSEMBLER__ */ |