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glibc/sysdeps/x86_64/multiarch
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H.J. Lu 5a103908c0 x86-64: Implement strcpy family IFUNC selectors in C 
Implement strcpy family IFUNC selectors in C.

All internal calls within libc.so can use IFUNC on x86-64 since unlike
x86, x86-64 supports PC-relative addressing to access the GOT entry so
that it can call via PLT without using an extra register.  For libc.a,
we can't use IFUNC for functions which are called before IFUNC has been
initialized.  Use IFUNC internally reduces the icache footprint since
libc.so and other codes in the process use the same implementations.
This patch uses IFUNC for strcpy family functions within libc.

	* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add
	strcpy-sse2 and stpcpy-sse2.
	* sysdeps/x86_64/multiarch/ifunc-unaligned-ssse3.h: New file.
	* sysdeps/x86_64/multiarch/stpcpy-sse2.S: Likewise.
	* sysdeps/x86_64/multiarch/stpcpy.c: Likewise.
	* sysdeps/x86_64/multiarch/stpncpy.c: Likewise.
	* sysdeps/x86_64/multiarch/strcpy-sse2.S: Likewise.
	* sysdeps/x86_64/multiarch/strcpy.c: Likewise.
	* sysdeps/x86_64/multiarch/strncpy.c: Likewise.
	* sysdeps/x86_64/multiarch/stpcpy.S: Removed.
	* sysdeps/x86_64/multiarch/stpncpy.S: Likewise.
	* sysdeps/x86_64/multiarch/strcpy.S: Likewise.
	* sysdeps/x86_64/multiarch/strncpy.S: Likewise.
	* sysdeps/x86_64/multiarch/stpncpy-c.c (weak_alias): New.
	(libc_hidden_def): Always defined as empty.
	* sysdeps/x86_64/multiarch/strncpy-c.c (libc_hidden_builtin_def):
	Always Defined as empty.
2017-06-12 09:06:09 -07:00
..
bcopy.S Use IFUNC memmove/memset in x86-64 bcopy/bzero 2012-10-11 13:58:16 -07:00
ifunc-avx2.h x86-64: Optimize memchr/rawmemchr/wmemchr with SSE2/AVX2 2017-06-09 05:13:31 -07:00
ifunc-impl-list.c x86-64: Correct comments in ifunc-impl-list.c 2017-06-09 05:53:45 -07:00
ifunc-unaligned-ssse3.h x86-64: Implement strcpy family IFUNC selectors in C 2017-06-12 09:06:09 -07:00
ifunc-wmemset.h x86-64: Rename wmemset.h to ifunc-wmemset.h 2017-06-07 14:48:34 -07:00
Makefile x86-64: Implement strcpy family IFUNC selectors in C 2017-06-12 09:06:09 -07:00
memchr-avx2.S x86-64: Optimize memchr/rawmemchr/wmemchr with SSE2/AVX2 2017-06-09 05:13:31 -07:00
memchr-sse2.S x86-64: Optimize memchr/rawmemchr/wmemchr with SSE2/AVX2 2017-06-09 05:13:31 -07:00
memchr.c x86-64: Optimize memchr/rawmemchr/wmemchr with SSE2/AVX2 2017-06-09 05:13:31 -07:00
memcmp-avx2-movbe.S x86-64: Optimize memcmp/wmemcmp with AVX2 and MOVBE 2017-06-05 12:52:55 -07:00
memcmp-sse4.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
memcmp-ssse3.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
memcmp.S x86-64: Optimize memcmp/wmemcmp with AVX2 and MOVBE 2017-06-05 12:52:55 -07:00
memcpy_chk.S x86: Use AVX2 memcpy/memset on Skylake server [BZ #21396] 2017-04-18 14:01:45 -07:00
memcpy-ssse3-back.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
memcpy-ssse3.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
memcpy.S x86: Use AVX2 memcpy/memset on Skylake server [BZ #21396] 2017-04-18 14:01:45 -07:00
memmove_chk.S x86: Use AVX2 memcpy/memset on Skylake server [BZ #21396] 2017-04-18 14:01:45 -07:00
memmove-avx512-no-vzeroupper.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +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-ssse3-back.S
memmove-ssse3.S
memmove-vec-unaligned-erms.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
memmove.S x86: Use AVX2 memcpy/memset on Skylake server [BZ #21396] 2017-04-18 14:01:45 -07:00
mempcpy_chk.S x86: Use AVX2 memcpy/memset on Skylake server [BZ #21396] 2017-04-18 14:01:45 -07:00
mempcpy.S x86: Use AVX2 memcpy/memset on Skylake server [BZ #21396] 2017-04-18 14:01:45 -07:00
memrchr-avx2.S x86-64: Optimize memrchr with AVX2 2017-06-09 05:44:41 -07:00
memrchr-sse2.S x86-64: Optimize memrchr with AVX2 2017-06-09 05:44:41 -07:00
memrchr.c x86-64: Optimize memrchr with AVX2 2017-06-09 05:44:41 -07:00
memset_chk.S x86: Use AVX2 memcpy/memset on Skylake server [BZ #21396] 2017-04-18 14:01:45 -07:00
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. 2017-01-01 00:14:16 +00:00
memset-avx512-unaligned-erms.S x86-64: Optimize wmemset with SSE2/AVX2/AVX512 2017-06-05 11:09:59 -07:00
memset-vec-unaligned-erms.S x86-64: Optimize wmemset with SSE2/AVX2/AVX512 2017-06-05 11:09:59 -07:00
memset.S x86-64: Optimize wmemset with SSE2/AVX2/AVX512 2017-06-05 11:09:59 -07:00
rawmemchr-avx2.S x86-64: Optimize memchr/rawmemchr/wmemchr with SSE2/AVX2 2017-06-09 05:13:31 -07:00
rawmemchr-sse2.S x86-64: Optimize memchr/rawmemchr/wmemchr with SSE2/AVX2 2017-06-09 05:13:31 -07:00
rawmemchr.c x86-64: Optimize memchr/rawmemchr/wmemchr with SSE2/AVX2 2017-06-09 05:13:31 -07:00
sched_cpucount.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
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 x86-64: Implement strcpy family IFUNC selectors in C 2017-06-12 09:06:09 -07:00
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 x86-64: Implement strcpy family IFUNC selectors in C 2017-06-12 09:06:09 -07:00
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 x86-64: Implement strcpy family IFUNC selectors in C 2017-06-12 09:06:09 -07:00
strcasecmp_l-ssse3.S
strcasecmp_l.S Add x86-64 __libc_ifunc_impl_list 2012-10-11 16:41:12 -07:00
strcat-sse2-unaligned.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strcat-ssse3.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strcat.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strchr-avx2.S x86-64: Optimize strchr/strchrnul/wcschr with AVX2 2017-06-09 05:42:29 -07:00
strchr-sse2-no-bsf.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strchr-sse2.S x86-64: Optimize strchr/strchrnul/wcschr with AVX2 2017-06-09 05:42:29 -07:00
strchr.c x86-64: Optimize strchr/strchrnul/wcschr with AVX2 2017-06-09 05:42:29 -07:00
strchrnul-avx2.S x86-64: Optimize strchr/strchrnul/wcschr with AVX2 2017-06-09 05:42:29 -07:00
strchrnul-sse2.S x86-64: Optimize strchr/strchrnul/wcschr with AVX2 2017-06-09 05:42:29 -07:00
strchrnul.c x86-64: Optimize strchr/strchrnul/wcschr with AVX2 2017-06-09 05:42:29 -07:00
strcmp-sse2-unaligned.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strcmp-sse42.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strcmp-ssse3.S Remove NOT_IN_libc 2014-11-24 15:03:45 +05:30
strcmp.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strcpy-sse2-unaligned.S Fix x86 strncat optimized implementation for large sizes 2017-01-03 14:24:53 -02:00
strcpy-sse2.S x86-64: Implement strcpy family IFUNC selectors in C 2017-06-12 09:06:09 -07:00
strcpy-ssse3.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strcpy.c x86-64: Implement strcpy family IFUNC selectors in C 2017-06-12 09:06:09 -07:00
strcspn-c.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strcspn.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strlen-avx2.S x86-64: Optimize strlen/strnlen/wcslen/wcsnlen with AVX2 2017-06-09 05:18:18 -07:00
strlen-sse2.S x86-64: Optimize strlen/strnlen/wcslen/wcsnlen with AVX2 2017-06-09 05:18:18 -07:00
strlen.c x86-64: Optimize strlen/strnlen/wcslen/wcsnlen with AVX2 2017-06-09 05:18:18 -07:00
strncase_l-ssse3.S
strncase_l.S Add x86-64 __libc_ifunc_impl_list 2012-10-11 16:41:12 -07:00
strncat-c.c Improve 64 bit strcat functions with SSE2/SSSE3 2011-07-19 17:11:54 -04:00
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.S Add x86-64 __libc_ifunc_impl_list 2012-10-11 16:41:12 -07:00
strncmp-ssse3.S Don't define x86-64 __strncmp_ssse3 in libc.a 2012-09-27 07:43:03 -07:00
strncmp.S Add x86-64 __libc_ifunc_impl_list 2012-10-11 16:41:12 -07:00
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 x86-64: Implement strcpy family IFUNC selectors in C 2017-06-12 09:06:09 -07:00
strnlen-avx2.S x86-64: Optimize strlen/strnlen/wcslen/wcsnlen with AVX2 2017-06-09 05:18:18 -07:00
strnlen-sse2.S x86-64: Optimize strlen/strnlen/wcslen/wcsnlen with AVX2 2017-06-09 05:18:18 -07:00
strnlen.c x86-64: Optimize strlen/strnlen/wcslen/wcsnlen with AVX2 2017-06-09 05:18:18 -07:00
strpbrk-c.c
strpbrk.S Add x86-64 __libc_ifunc_impl_list 2012-10-11 16:41:12 -07:00
strrchr-avx2.S x86-64: Optimize strrchr/wcsrchr with AVX2 2017-06-09 05:45:52 -07:00
strrchr-sse2.S x86-64: Optimize strrchr/wcsrchr with AVX2 2017-06-09 05:45:52 -07:00
strrchr.c x86-64: Optimize strrchr/wcsrchr with AVX2 2017-06-09 05:45:52 -07:00
strspn-c.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strspn.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strstr-sse2-unaligned.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
strstr.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
test-multiarch.c Suppress internal declarations for most of the testsuite. 2017-05-11 19:27:59 -04:00
varshift.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
varshift.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
wcschr-avx2.S x86-64: Optimize strchr/strchrnul/wcschr with AVX2 2017-06-09 05:42:29 -07:00
wcschr-sse2.S x86-64: Optimize strchr/strchrnul/wcschr with AVX2 2017-06-09 05:42:29 -07:00
wcschr.c x86-64: Optimize strchr/strchrnul/wcschr with AVX2 2017-06-09 05:42:29 -07:00
wcscpy-c.c Remove NOT_IN_libc 2014-11-24 15:03:45 +05:30
wcscpy-ssse3.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
wcscpy.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
wcslen-avx2.S x86-64: Optimize strlen/strnlen/wcslen/wcsnlen with AVX2 2017-06-09 05:18:18 -07:00
wcslen-sse2.S x86-64: Optimize strlen/strnlen/wcslen/wcsnlen with AVX2 2017-06-09 05:18:18 -07:00
wcslen.c x86-64: Optimize strlen/strnlen/wcslen/wcsnlen with AVX2 2017-06-09 05:18:18 -07:00
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 x86-64: Optimize strlen/strnlen/wcslen/wcsnlen with AVX2 2017-06-09 05:18:18 -07:00
wcsrchr-avx2.S x86-64: Optimize strrchr/wcsrchr with AVX2 2017-06-09 05:45:52 -07:00
wcsrchr-sse2.S x86-64: Optimize strrchr/wcsrchr with AVX2 2017-06-09 05:45:52 -07:00
wcsrchr.c x86-64: Optimize strrchr/wcsrchr with AVX2 2017-06-09 05:45:52 -07:00
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 x86-64: Optimize memchr/rawmemchr/wmemchr with SSE2/AVX2 2017-06-09 05:13:31 -07:00
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.S x86-64: Optimize memcmp/wmemcmp with AVX2 and MOVBE 2017-06-05 12:52:55 -07:00
wmemset_chk-nonshared.S x86-64: Optimize wmemset with SSE2/AVX2/AVX512 2017-06-05 11:09:59 -07:00
wmemset_chk.c x86-64: Rename wmemset.h to ifunc-wmemset.h 2017-06-07 14:48:34 -07:00
wmemset.c x86-64: Rename wmemset.h to ifunc-wmemset.h 2017-06-07 14:48:34 -07:00