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glibc/sysdeps/x86_64/multiarch
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H.J. Lu 9620398097 x86: Install <sys/platform/x86.h> [BZ #26124] 
Install <sys/platform/x86.h> so that programmers can do

 #if __has_include(<sys/platform/x86.h>)
 #include <sys/platform/x86.h>
 #endif
 ...

   if (CPU_FEATURE_USABLE (SSE2))
 ...
   if (CPU_FEATURE_USABLE (AVX2))
 ...

<sys/platform/x86.h> exports only:

enum
{
  COMMON_CPUID_INDEX_1 = 0,
  COMMON_CPUID_INDEX_7,
  COMMON_CPUID_INDEX_80000001,
  COMMON_CPUID_INDEX_D_ECX_1,
  COMMON_CPUID_INDEX_80000007,
  COMMON_CPUID_INDEX_80000008,
  COMMON_CPUID_INDEX_7_ECX_1,
  /* Keep the following line at the end.  */
  COMMON_CPUID_INDEX_MAX
};

struct cpuid_features
{
  struct cpuid_registers cpuid;
  struct cpuid_registers usable;
};

struct cpu_features
{
  struct cpu_features_basic basic;
  struct cpuid_features features[COMMON_CPUID_INDEX_MAX];
};

/* Get a pointer to the CPU features structure.  */
extern const struct cpu_features *__x86_get_cpu_features
  (unsigned int max) __attribute__ ((const));

Since all feature checks are done through macros, programs compiled with
a newer <sys/platform/x86.h> are compatible with the older glibc binaries
as long as the layout of struct cpu_features is identical.  The features
array can be expanded with backward binary compatibility for both .o and
.so files.  When COMMON_CPUID_INDEX_MAX is increased to support new
processor features, __x86_get_cpu_features in the older glibc binaries
returns NULL and HAS_CPU_FEATURE/CPU_FEATURE_USABLE return false on the
new processor feature.  No new symbol version is neeeded.

Both CPU_FEATURE_USABLE and HAS_CPU_FEATURE are provided.  HAS_CPU_FEATURE
can be used to identify processor features.

Note: Although GCC has __builtin_cpu_supports, it only supports a subset
of <sys/platform/x86.h> and it is equivalent to CPU_FEATURE_USABLE.  It
doesn't support HAS_CPU_FEATURE.
2020-09-11 17:20:52 -07:00
..
bcopy.S Use IFUNC memmove/memset in x86-64 bcopy/bzero 2012-10-11 13:58:16 -07:00
ifunc-avx2.h x86: Support usable check for all CPU features 2020-07-13 06:05:16 -07:00
ifunc-impl-list.c x86: Support usable check for all CPU features 2020-07-13 06:05:16 -07:00
ifunc-memcmp.h x86: Support usable check for all CPU features 2020-07-13 06:05:16 -07:00
ifunc-memmove.h x86: Support usable check for all CPU features 2020-07-13 06:05:16 -07:00
ifunc-memset.h x86: Support usable check for all CPU features 2020-07-13 06:05:16 -07:00
ifunc-sse4_2.h x86: Support usable check for all CPU features 2020-07-13 06:05:16 -07:00
ifunc-strcasecmp.h x86: Support usable check for all CPU features 2020-07-13 06:05:16 -07:00
ifunc-strcpy.h x86: Support usable check for all CPU features 2020-07-13 06:05:16 -07:00
ifunc-wmemset.h x86: Support usable check for all CPU features 2020-07-13 06:05:16 -07:00
Makefile x86: Install <sys/platform/x86.h> [BZ #26124] 2020-09-11 17:20:52 -07:00
memchr-avx2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memchr-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memchr.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memcmp-avx2-movbe.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memcmp-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memcmp-sse4.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memcmp-ssse3.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memcmp.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memcpy_chk-nonshared.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memcpy_chk.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memcpy-ssse3-back.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memcpy-ssse3.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memcpy.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memmove_chk-nonshared.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memmove_chk.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memmove-avx512-no-vzeroupper.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memmove-avx512-unaligned-erms.S Require binutils 2.24 to build x86-64 glibc [BZ #20139] 2016-07-01 06:03:05 -07:00
memmove-avx-unaligned-erms.S X86-64: Use non-temporal store in memcpy on large data 2016-04-12 08:10:47 -07:00
memmove-sse2-unaligned-erms.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memmove-ssse3-back.S Improve 64bit memcpy/memmove for Atom, Core 2 and Core i7 2010-06-30 08:26:11 -07:00
memmove-ssse3.S Improve 64bit memcpy/memmove for Atom, Core 2 and Core i7 2010-06-30 08:26:11 -07:00
memmove-vec-unaligned-erms.S x86: Add thresholds for "rep movsb/stosb" to tunables 2020-07-06 11:48:42 -07:00
memmove.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
mempcpy_chk-nonshared.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
mempcpy_chk.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
mempcpy.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memrchr-avx2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memrchr-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memrchr.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memset_chk-nonshared.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memset_chk.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memset-avx2-unaligned-erms.S x86-64: Optimize wmemset with SSE2/AVX2/AVX512 2017-06-05 11:09:59 -07:00
memset-avx512-no-vzeroupper.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memset-avx512-unaligned-erms.S x86-64: Optimize wmemset with SSE2/AVX2/AVX512 2017-06-05 11:09:59 -07:00
memset-sse2-unaligned-erms.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
memset-vec-unaligned-erms.S x86: Add thresholds for "rep movsb/stosb" to tunables 2020-07-06 11:48:42 -07:00
memset.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
rawmemchr-avx2.S x86-64: Optimize memchr/rawmemchr/wmemchr with SSE2/AVX2 2017-06-09 05:13:31 -07:00
rawmemchr-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
rawmemchr.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
sched_cpucount.c x86: Support usable check for all CPU features 2020-07-13 06:05:16 -07:00
stpcpy-avx2.S x86-64: Optimize strcat/strncat, strcpy/strncpy and stpcpy/stpncpy with AVX2 2019-01-14 09:43:38 -06:00
stpcpy-sse2-unaligned.S Improved st{r,p}{,n}cpy for SSE2 and SSSE3 on x86-64 2011-06-24 15:14:22 -04:00
stpcpy-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
stpcpy-ssse3.S Improved st{r,p}{,n}cpy for SSE2 and SSSE3 on x86-64 2011-06-24 15:14:22 -04:00
stpcpy.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
stpncpy-avx2.S x86-64: Optimize strcat/strncat, strcpy/strncpy and stpcpy/stpncpy with AVX2 2019-01-14 09:43:38 -06:00
stpncpy-c.c x86-64: Implement strcpy family IFUNC selectors in C 2017-06-12 09:06:09 -07:00
stpncpy-sse2-unaligned.S Improved st{r,p}{,n}cpy for SSE2 and SSSE3 on x86-64 2011-06-24 15:14:22 -04:00
stpncpy-ssse3.S Improved st{r,p}{,n}cpy for SSE2 and SSSE3 on x86-64 2011-06-24 15:14:22 -04:00
stpncpy.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcasecmp_l-avx.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcasecmp_l-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcasecmp_l-sse4_2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcasecmp_l-ssse3.S Fix x86-64 build without multiarch. 2010-08-14 14:56:32 -07:00
strcasecmp_l.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcasecmp.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcat-avx2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcat-sse2-unaligned.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcat-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcat-ssse3.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strchr-avx2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strchr-sse2-no-bsf.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strchr-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strchr.c x86: Support usable check for all CPU features 2020-07-13 06:05:16 -07:00
strchrnul-avx2.S x86-64: Optimize strchr/strchrnul/wcschr with AVX2 2017-06-09 05:42:29 -07:00
strchrnul-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strchrnul.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcmp-avx2.S Fix avx2 strncmp offset compare condition check [BZ #25933] 2020-06-17 07:07:38 -07:00
strcmp-sse2-unaligned.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcmp-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcmp-sse4_2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcmp-sse42.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcmp-ssse3.S Remove NOT_IN_libc 2014-11-24 15:03:45 +05:30
strcmp.c x86: Support usable check for all CPU features 2020-07-13 06:05:16 -07:00
strcpy-avx2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcpy-sse2-unaligned.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcpy-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcpy-ssse3.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcpy.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcspn-c.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcspn-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strcspn.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strlen-avx2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strlen-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strlen.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strncase_l-avx.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strncase_l-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strncase_l-sse4_2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strncase_l-ssse3.S Add optimized strncasecmp versions for x86-64. 2010-08-14 22:04:01 -07:00
strncase_l.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strncase.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strncat-avx2.S x86-64: Optimize strcat/strncat, strcpy/strncpy and stpcpy/stpncpy with AVX2 2019-01-14 09:43:38 -06:00
strncat-c.c x86-64: Use IFUNC strncat inside libc.so 2018-05-16 09:04:35 -07:00
strncat-sse2-unaligned.S Improve 64 bit strcat functions with SSE2/SSSE3 2011-07-19 17:11:54 -04:00
strncat-ssse3.S Improve 64 bit strcat functions with SSE2/SSSE3 2011-07-19 17:11:54 -04:00
strncat.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strncmp-avx2.S x86-64: Optimize strcmp/wcscmp and strncmp/wcsncmp with AVX2 2018-06-01 16:32:43 -05:00
strncmp-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strncmp-sse4_2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strncmp-ssse3.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strncmp.c x86: Support usable check for all CPU features 2020-07-13 06:05:16 -07:00
strncpy-avx2.S x86-64: Optimize strcat/strncat, strcpy/strncpy and stpcpy/stpncpy with AVX2 2019-01-14 09:43:38 -06:00
strncpy-c.c x86-64: Implement strcpy family IFUNC selectors in C 2017-06-12 09:06:09 -07:00
strncpy-sse2-unaligned.S Improved st{r,p}{,n}cpy for SSE2 and SSSE3 on x86-64 2011-06-24 15:14:22 -04:00
strncpy-ssse3.S Improved st{r,p}{,n}cpy for SSE2 and SSSE3 on x86-64 2011-06-24 15:14:22 -04:00
strncpy.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strnlen-avx2.S x86-64: Optimize strlen/strnlen/wcslen/wcsnlen with AVX2 2017-06-09 05:18:18 -07:00
strnlen-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strnlen.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strpbrk-c.c x86-64: Implement strcspn/strpbrk/strspn IFUNC selectors in C 2017-06-15 08:59:05 -07:00
strpbrk-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strpbrk.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strrchr-avx2.S x86_64: Use %xmmN with vpxor to clear a vector register 2020-06-17 05:44:02 -07:00
strrchr-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strrchr.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strspn-c.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strspn-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strspn.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strstr-sse2-unaligned.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
strstr.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
varshift.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
varshift.h Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
wcschr-avx2.S x86-64: Optimize strchr/strchrnul/wcschr with AVX2 2017-06-09 05:42:29 -07:00
wcschr-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
wcschr.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
wcscmp-avx2.S x86-64: Optimize strcmp/wcscmp and strncmp/wcsncmp with AVX2 2018-06-01 16:32:43 -05:00
wcscmp-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
wcscmp.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
wcscpy-c.c wcsmbs: optimize wcscat 2019-02-27 10:00:37 -03:00
wcscpy-ssse3.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
wcscpy.c x86: Support usable check for all CPU features 2020-07-13 06:05:16 -07:00
wcslen-avx2.S x86-64: Optimize strlen/strnlen/wcslen/wcsnlen with AVX2 2017-06-09 05:18:18 -07:00
wcslen-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
wcslen.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
wcsncmp-avx2.S x86-64: Optimize strcmp/wcscmp and strncmp/wcsncmp with AVX2 2018-06-01 16:32:43 -05:00
wcsncmp-sse2.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
wcsncmp.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
wcsnlen-avx2.S x86-64: Optimize strlen/strnlen/wcslen/wcsnlen with AVX2 2017-06-09 05:18:18 -07:00
wcsnlen-c.c x86-64: Move wcsnlen.S to multiarch/wcsnlen-sse4_1.S 2017-06-06 06:12:32 -07:00
wcsnlen-sse4_1.S x86-64: Move wcsnlen.S to multiarch/wcsnlen-sse4_1.S 2017-06-06 06:12:32 -07:00
wcsnlen.c x86: Support usable check for all CPU features 2020-07-13 06:05:16 -07:00
wcsrchr-avx2.S x86-64: Optimize strrchr/wcsrchr with AVX2 2017-06-09 05:45:52 -07:00
wcsrchr-sse2.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
wcsrchr.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
wmemchr-avx2.S x86-64: Optimize memchr/rawmemchr/wmemchr with SSE2/AVX2 2017-06-09 05:13:31 -07:00
wmemchr-sse2.S x86-64: Optimize memchr/rawmemchr/wmemchr with SSE2/AVX2 2017-06-09 05:13:31 -07:00
wmemchr.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
wmemcmp-avx2-movbe.S x86-64: Optimize memcmp/wmemcmp with AVX2 and MOVBE 2017-06-05 12:52:55 -07:00
wmemcmp-c.c Remove NOT_IN_libc 2014-11-24 15:03:45 +05:30
wmemcmp-sse4.S Optimized memcmp and wmemcmp for x86-64 and x86-32 2011-10-15 11:10:08 -04:00
wmemcmp-ssse3.S Optimized memcmp and wmemcmp for x86-64 and x86-32 2011-10-15 11:10:08 -04:00
wmemcmp.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
wmemset_chk-nonshared.S Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
wmemset_chk.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
wmemset.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00