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Clean up x86 multiarch HAS_FOO macros.

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Roland McGrath 2009-10-06 19:59:03 -07:00
parent 930799d555
commit 9d6982d5d2
3 changed files with 21 additions and 25 deletions
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9
ChangeLog
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@ -1,3 +1,12 @@
2009-10-06 Roland McGrath <roland@redhat.com>
* sysdeps/x86_64/multiarch/init-arch.h
[NOT_IN_libc] (__get_cpu_features): Define it as a macro.
(HAS_CPU_FEATURE): New macro.
(HAS_SSE2, HAS_POPCOUNT, HAS_SSE4_2, HAS_FMA): Use it.
* sysdeps/x86_64/multiarch/init-arch.c
(__get_cpu_features): #undef it before definition.
2009-10-05 Andreas Schwab <schwab@redhat.com>
* locale/C-time.c: Revert week-1stday back to 19971130 and set

1
sysdeps/x86_64/multiarch/init-arch.c
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@ -77,6 +77,7 @@ __init_cpu_features (void)
__cpu_features.kind = arch_kind_other;
}
#undef __get_cpu_features
const struct cpu_features *
__get_cpu_features (void)

36
sysdeps/x86_64/multiarch/init-arch.h
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@ -58,30 +58,16 @@ extern void __init_cpu_features (void) attribute_hidden;
extern const struct cpu_features *__get_cpu_features (void)
__attribute__ ((const));
#ifndef NOT_IN_libc
# define __get_cpu_features() (&__cpu_features)
#endif
#define HAS_CPU_FEATURE(idx, reg, bit) \
((__get_cpu_features ()->cpuid[idx].reg & (1 << (bit))) != 0)
/* Following are the feature tests used throughout libc. */
#ifndef NOT_IN_libc
# define HAS_SSE2 \
((__cpu_features.cpuid[COMMON_CPUID_INDEX_1].edx & (1 << 26)) != 0)
# define HAS_POPCOUNT \
((__cpu_features.cpuid[COMMON_CPUID_INDEX_1].ecx & (1 << 23)) != 0)
# define HAS_SSE4_2 \
((__cpu_features.cpuid[COMMON_CPUID_INDEX_1].ecx & (1 << 20)) != 0)
# define HAS_FMA \
((__cpu_features.cpuid[COMMON_CPUID_INDEX_1].ecx & (1 << 12)) != 0)
#else
# define HAS_SSE2 \
((__get_cpu_features ()->cpuid[COMMON_CPUID_INDEX_1].edx & (1 << 26)) != 0)
# define HAS_POPCOUNT \
((__get_cpu_features ()->cpuid[COMMON_CPUID_INDEX_1].ecx & (1 << 23)) != 0)
# define HAS_SSE4_2 \
((__get_cpu_features ()->cpuid[COMMON_CPUID_INDEX_1].ecx & (1 << 20)) != 0)
# define HAS_FMA \
((__get_cpu_features ()->cpuid[COMMON_CPUID_INDEX_1].ecx & (1 << 12)) != 0)
#endif
#define HAS_SSE2 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, edx, 26)
#define HAS_POPCOUNT HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, 23)
#define HAS_SSE4_2 HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, 20)
#define HAS_FMA HAS_CPU_FEATURE (COMMON_CPUID_INDEX_1, ecx, 12)