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
..
aarch64	Optimize generic spinlock code and use C11 like atomic macros.	2017-06-06 09:41:56 +02:00
alpha	Optimize generic spinlock code and use C11 like atomic macros.	2017-06-06 09:41:56 +02:00
arm	Replace all internal uses of __bzero with memset. This removes the need	2017-06-12 14:56:53 +01:00
generic	ld.so: Consolidate 2 strtouls into _dl_strtoul [BZ #21528]	2017-06-08 12:52:42 -07:00
gnu	Regenerate sysdeps/gnu/errlist.c.	2017-06-04 15:27:14 -04:00
hppa	Optimize generic spinlock code and use C11 like atomic macros.	2017-06-06 09:41:56 +02:00
i386	Optimize generic spinlock code and use C11 like atomic macros.	2017-06-06 09:41:56 +02:00
ia64	Optimize generic spinlock code and use C11 like atomic macros.	2017-06-06 09:41:56 +02:00
ieee754	float128: Add strfromf128	2017-06-07 17:08:21 -03:00
init_array	Update copyright dates with scripts/update-copyrights.	2017-01-01 00:14:16 +00:00
m68k	Optimize generic spinlock code and use C11 like atomic macros.	2017-06-06 09:41:56 +02:00
mach	Fix struct sigaltstack namespace (bug 21517).	2017-06-05 10:17:46 +00:00
microblaze	Optimize generic spinlock code and use C11 like atomic macros.	2017-06-06 09:41:56 +02:00
mips	Optimize generic spinlock code and use C11 like atomic macros.	2017-06-06 09:41:56 +02:00
nios2	Optimize generic spinlock code and use C11 like atomic macros.	2017-06-06 09:41:56 +02:00
nptl	fork: Remove bogus parent PID assertions [BZ #21386]	2017-05-12 16:04:16 +02:00
posix	getaddrinfo: Eliminate another strdup call	2017-06-03 08:37:31 +02:00
powerpc	Optimize generic spinlock code and use C11 like atomic macros.	2017-06-06 09:41:56 +02:00
pthread	Remove __need macros from signal.h.	2017-05-20 19:04:43 -04:00
s390	S390: Use generic spinlock code.	2017-06-06 09:41:56 +02:00
sh	Move shared pthread definitions to common headers	2017-05-09 17:49:17 -03:00
sparc	Make LD_HWCAP_MASK usable for static binaries	2017-06-07 11:11:40 +05:30
tile	Optimize generic spinlock code and use C11 like atomic macros.	2017-06-06 09:41:56 +02:00
unix	powerpc: add sysconf support for cache geometries	2017-06-09 14:36:22 -03:00
wordsize-32	Build divdi3 only for architecture that required it	2017-04-06 15:14:34 -03:00
wordsize-64	Add missing header files throughout the testsuite.	2017-02-16 17:33:18 -05:00
x86	Make LD_HWCAP_MASK usable for static binaries	2017-06-07 11:11:40 +05:30
x86_64	x86-64: Implement strcpy family IFUNC selectors in C	2017-06-12 09:06:09 -07:00