glibc/sysdeps/x86_64/multiarch/wcsnlen-sse4_1.S

#ifndef WCSNLEN
# define WCSNLEN	__wcsnlen_sse4_1
# define OVERFLOW_STRLEN	__wcslen_sse4_1
#endif

#define AS_WCSLEN
#define AS_STRNLEN
#define STRLEN	WCSNLEN
#define SECTION(p)	p##.sse4.1

#include "strlen-sse2.S"
x86: Add support to build strcmp/strlen/strchr with explicit ISA level 1. Add default ISA level selection in non-multiarch/rtld implementations. 2. Add ISA level build guards to different implementations. - I.e strcmp-avx2.S which is ISA level 3 will only build if compiled ISA level <= 3. Otherwise there is no reason to include it as we will always use one of the ISA level 4 implementations (strcmp-evex.S). 3. Refactor the ifunc selector and ifunc implementation list to use the ISA level aware wrapper macros that allow functions below the compiled ISA level (with a guranteed replacement) to be skipped. Tested with and without multiarch on x86_64 for ISA levels: {generic, x86-64-v2, x86-64-v3, x86-64-v4} And m32 with and without multiarch. 2022-07-13 23:32:59 +00:00			`#ifndef WCSNLEN`
			`# define WCSNLEN __wcsnlen_sse4_1`
			`# define OVERFLOW_STRLEN __wcslen_sse4_1`
			`#endif`

x86-64: Move wcsnlen.S to multiarch/wcsnlen-sse4_1.S Since wcsnlen.S uses pminud which is the part of SSE4.1, move wcsnlen.S to multiarch/wcsnlen-sse4_1.S. * sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add wcsnlen-sse4_1 and wcsnlen-c. * sysdeps/x86_64/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Test __wcsnlen_sse4_1 and __wcsnlen_sse2. * sysdeps/x86_64/multiarch/ifunc-sse4_1.h: New file. * sysdeps/x86_64/multiarch/wcsnlen-c.c: Likewise. * sysdeps/x86_64/multiarch/wcsnlen-sse4_1.S: Likewise. * sysdeps/x86_64/multiarch/wcsnlen.c: Likewise. * sysdeps/x86_64/wcsnlen.S: Removed. 2017-06-06 13:12:22 +00:00			`#define AS_WCSLEN`
			`#define AS_STRNLEN`
x86: Add support to build strcmp/strlen/strchr with explicit ISA level 1. Add default ISA level selection in non-multiarch/rtld implementations. 2. Add ISA level build guards to different implementations. - I.e strcmp-avx2.S which is ISA level 3 will only build if compiled ISA level <= 3. Otherwise there is no reason to include it as we will always use one of the ISA level 4 implementations (strcmp-evex.S). 3. Refactor the ifunc selector and ifunc implementation list to use the ISA level aware wrapper macros that allow functions below the compiled ISA level (with a guranteed replacement) to be skipped. Tested with and without multiarch on x86_64 for ISA levels: {generic, x86-64-v2, x86-64-v3, x86-64-v4} And m32 with and without multiarch. 2022-07-13 23:32:59 +00:00			`#define STRLEN WCSNLEN`
x86: Put wcs{n}len-sse4.1 in the sse4.1 text section Previously was missing but the two implementations shouldn't get in the sse2 (generic) text section. 2022-06-24 16:42:15 +00:00			`#define SECTION(p) p##.sse4.1`
x86-64: Move wcsnlen.S to multiarch/wcsnlen-sse4_1.S Since wcsnlen.S uses pminud which is the part of SSE4.1, move wcsnlen.S to multiarch/wcsnlen-sse4_1.S. * sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add wcsnlen-sse4_1 and wcsnlen-c. * sysdeps/x86_64/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Test __wcsnlen_sse4_1 and __wcsnlen_sse2. * sysdeps/x86_64/multiarch/ifunc-sse4_1.h: New file. * sysdeps/x86_64/multiarch/wcsnlen-c.c: Likewise. * sysdeps/x86_64/multiarch/wcsnlen-sse4_1.S: Likewise. * sysdeps/x86_64/multiarch/wcsnlen.c: Likewise. * sysdeps/x86_64/wcsnlen.S: Removed. 2017-06-06 13:12:22 +00:00
x86: Move strlen SSE2 implementation to multiarch/strlen-sse2.S This commit doesn't affect libc.so.6, its just housekeeping to prepare for adding explicit ISA level support. Tested build on x86_64 and x86_32 with/without multiarch. 2022-07-12 19:29:01 +00:00			`#include "strlen-sse2.S"`