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13efa86ece
glibc/sysdeps
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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
..
aarch64 Remove atomic_compare_and_exchange_bool_rel. 2016-06-24 23:04:40 +03:00
alpha Remove atomic_compare_and_exchange_bool_rel. 2016-06-24 23:04:40 +03:00
arm Remove atomic_compare_and_exchange_bool_rel. 2016-06-24 23:04:40 +03:00
generic Move sysdeps/generic/bits/hwcap.h to top-level bits/ 2016-06-22 05:51:12 -07:00
gnu Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
hppa elf: Consolidate machine-agnostic DTV definitions in <dl-dtv.h> 2016-06-20 14:31:40 +02:00
i386 i686/multiarch: Regenerate ulps 2016-06-30 00:31:11 +02:00
ia64 elf: Consolidate machine-agnostic DTV definitions in <dl-dtv.h> 2016-06-20 14:31:40 +02:00
ieee754 Add nextup and nextdown math functions 2016-06-16 21:37:45 +05:30
init_array Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
m68k elf: Consolidate machine-agnostic DTV definitions in <dl-dtv.h> 2016-06-20 14:31:40 +02:00
mach elf: Consolidate machine-agnostic DTV definitions in <dl-dtv.h> 2016-06-20 14:31:40 +02:00
microblaze Remove atomic_compare_and_exchange_bool_rel. 2016-06-24 23:04:40 +03:00
mips MIPS: run tst-mode-switch-{1,2,3}.c using test-skeleton.c 2016-06-27 23:57:40 +02:00
nacl Add nextup and nextdown math functions 2016-06-16 21:37:45 +05:30
nios2 elf: Consolidate machine-agnostic DTV definitions in <dl-dtv.h> 2016-06-20 14:31:40 +02:00
nptl Increase fork signal safety for single-threaded processes [BZ #19703] 2016-05-12 15:26:55 +02:00
posix getaddrinfo: Convert from extend_alloca to struct scratch_buffer 2016-05-12 14:07:56 +02:00
powerpc Remove atomic_compare_and_exchange_bool_rel. 2016-06-24 23:04:40 +03:00
pthread Revert "aio: fix newp->running data race" 2016-05-04 15:52:30 +02:00
s390 elf: Consolidate machine-agnostic DTV definitions in <dl-dtv.h> 2016-06-20 14:31:40 +02:00
sh elf: Consolidate machine-agnostic DTV definitions in <dl-dtv.h> 2016-06-20 14:31:40 +02:00
sparc elf: Consolidate machine-agnostic DTV definitions in <dl-dtv.h> 2016-06-20 14:31:40 +02:00
tile Remove atomic_compare_and_exchange_bool_rel. 2016-06-24 23:04:40 +03:00
unix MIPS, SPARC: more fixes to the vfork aliases in libpthread.so 2016-06-27 09:59:37 +02:00
wordsize-32 Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
wordsize-64 Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
x86 Check Prefer_ERMS in memmove/memcpy/mempcpy/memset 2016-06-30 07:58:11 -07:00
x86_64 Check Prefer_ERMS in memmove/memcpy/mempcpy/memset 2016-06-30 07:58:11 -07:00