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13efa86ece
glibc/sysdeps/x86
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H.J. Lu 13efa86ece Check Prefer_ERMS in memmove/memcpy/mempcpy/memset 
Although the Enhanced REP MOVSB/STOSB (ERMS) implementations of memmove,
memcpy, mempcpy and memset aren't used by the current processors, this
patch adds Prefer_ERMS check in memmove, memcpy, mempcpy and memset so
that they can be used in the future.

	* sysdeps/x86/cpu-features.h (bit_arch_Prefer_ERMS): New.
	(index_arch_Prefer_ERMS): Likewise.
	* sysdeps/x86_64/multiarch/memcpy.S (__new_memcpy): Return
	__memcpy_erms for Prefer_ERMS.
	* sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S
	(__memmove_erms): Enabled for libc.a.
	* ysdeps/x86_64/multiarch/memmove.S (__libc_memmove): Return
	__memmove_erms or Prefer_ERMS.
	* sysdeps/x86_64/multiarch/mempcpy.S (__mempcpy): Return
	__mempcpy_erms for Prefer_ERMS.
	* sysdeps/x86_64/multiarch/memset.S (memset): Return
	__memset_erms for Prefer_ERMS.
2016-06-30 07:58:11 -07:00
..
bits Avoid array-bounds warning for strncat on i586 (bug 20260) 2016-06-29 17:15:40 +02:00
fpu Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
cacheinfo.c Count number of logical processors sharing L2 cache 2016-05-27 15:16:51 -07:00
cpu-features-offsets.sym Remove x86 ifunc-defines.sym and rtld-global-offsets.sym 2016-05-11 05:51:39 -07:00
cpu-features.c Check FMA after COMMON_CPUID_INDEX_80000001 2016-06-07 08:00:40 -07:00
cpu-features.h Check Prefer_ERMS in memmove/memcpy/mempcpy/memset 2016-06-30 07:58:11 -07:00
dl-get-cpu-features.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
elide.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
fpu_control.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
init-arch.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
libc-start.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
linkmap.h Rename bits/linkmap.h to linkmap.h (bug 14912). 2015-09-04 19:44:27 +00:00
Makefile Remove x86 ifunc-defines.sym and rtld-global-offsets.sym 2016-05-11 05:51:39 -07:00
string_private.h Add _STRING_INLINE_unaligned and string_private.h 2016-02-18 14:55:29 -02:00
tininess.h Use sysdeps/x86/tininess.h for i386 and x86_64 2012-10-30 20:38:31 -07:00
tst-get-cpu-features-static.c Add _dl_x86_cpu_features to rtld_global 2015-08-13 03:41:22 -07:00
tst-get-cpu-features.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
Versions Add _dl_x86_cpu_features to rtld_global 2015-08-13 03:41:22 -07:00