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glibc/sysdeps/x86_64/memset.S

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x86_64: Remove bzero optimization Both symbols are marked as legacy in POSIX.1-2001 and removed on POSIX.1-2008, although the prototypes are defined for _GNU_SOURCE or _DEFAULT_SOURCE. GCC also replaces bcopy with a memmove and bzero with memset on default configuration (to actually get a bzero libc call the code requires to omit string.h inclusion and built with -fno-builtin), so it is highly unlikely programs are actually calling libc bzero symbol. On a recent Linux distro (Ubuntu 22.04), there is no bzero calls by the installed binaries. $ cat count_bstring.sh #!/bin/bash files=`IFS=':';for i in $PATH; do test -d "$i" && find "$i" -maxdepth 1 -executable -type f; done` total=0 for file in $files; do symbols=`objdump -R $file 2>&1` if [ $? -eq 0 ]; then ncalls=`echo $symbols | grep -w $1 | wc -l` ((total=total+ncalls)) if [ $ncalls -gt 0 ]; then echo "$file: $ncalls" fi fi done echo "TOTAL=$total" $ ./count_bstring.sh bzero TOTAL=0 Checked on x86_64-linux-gnu.
2022-05-13 12:33:30 +00:00
/* memset -- set memory area to CH/0
Update. * sysdeps/x86_64/dl-machine.h (elf_machine_runtime_setup): Declare external functions with hidden attribute. (elf_machine_rela): Optimize. * sysdeps/x86_64/memset.S: New file. * sysdeps/x86_64/bzero.S: New file. * sysdeps/x86_64/stpcpy.S: New file. * sysdeps/x86_64/strcat.S: New file. * sysdeps/x86_64/strchr.S: New file. * sysdeps/x86_64/strcpy.S: New file. * sysdeps/x86_64/strcspn.S: New file. * sysdeps/x86_64/strlen.S: New file. * sysdeps/x86_64/strpbrk.S: New file. * sysdeps/x86_64/strspn.S: New file. * sysdeps/x86_64/strcmp.S: New file. * sysdeps/x86_64/strtok_r.S: New file. * sysdeps/x86_64/strtok.S: New file. * sysdeps/x86_64/memcpy.S: New file. * sysdeps/x86_64/mempcpy.S: New file.
2002-08-31 17:45:33 +00:00
Optimized version for x86-64.
Update copyright dates with scripts/update-copyrights
2024-01-01 18:12:26 +00:00
Copyright (C) 2002-2024 Free Software Foundation, Inc.
Update. * sysdeps/x86_64/dl-machine.h (elf_machine_runtime_setup): Declare external functions with hidden attribute. (elf_machine_rela): Optimize. * sysdeps/x86_64/memset.S: New file. * sysdeps/x86_64/bzero.S: New file. * sysdeps/x86_64/stpcpy.S: New file. * sysdeps/x86_64/strcat.S: New file. * sysdeps/x86_64/strchr.S: New file. * sysdeps/x86_64/strcpy.S: New file. * sysdeps/x86_64/strcspn.S: New file. * sysdeps/x86_64/strlen.S: New file. * sysdeps/x86_64/strpbrk.S: New file. * sysdeps/x86_64/strspn.S: New file. * sysdeps/x86_64/strcmp.S: New file. * sysdeps/x86_64/strtok_r.S: New file. * sysdeps/x86_64/strtok.S: New file. * sysdeps/x86_64/memcpy.S: New file. * sysdeps/x86_64/mempcpy.S: New file.
2002-08-31 17:45:33 +00:00
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
Replace FSF snail mail address with URLs.
2012-02-09 23:18:22 +00:00
License along with the GNU C Library; if not, see
Prefer https to http for gnu.org and fsf.org URLs Also, change sources.redhat.com to sourceware.org. This patch was automatically generated by running the following shell script, which uses GNU sed, and which avoids modifying files imported from upstream: sed -ri ' s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g ' \ $(find $(git ls-files) -prune -type f \ ! -name '*.po' \ ! -name 'ChangeLog*' \ ! -path COPYING ! -path COPYING.LIB \ ! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \ ! -path manual/texinfo.tex ! -path scripts/config.guess \ ! -path scripts/config.sub ! -path scripts/install-sh \ ! -path scripts/mkinstalldirs ! -path scripts/move-if-change \ ! -path INSTALL ! -path locale/programs/charmap-kw.h \ ! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \ ! '(' -name configure \ -execdir test -f configure.ac -o -f configure.in ';' ')' \ ! '(' -name preconfigure \ -execdir test -f preconfigure.ac ';' ')' \ -print) and then by running 'make dist-prepare' to regenerate files built from the altered files, and then executing the following to cleanup: chmod a+x sysdeps/unix/sysv/linux/riscv/configure # Omit irrelevant whitespace and comment-only changes, # perhaps from a slightly-different Autoconf version. git checkout -f \ sysdeps/csky/configure \ sysdeps/hppa/configure \ sysdeps/riscv/configure \ sysdeps/unix/sysv/linux/csky/configure # Omit changes that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines git checkout -f \ sysdeps/powerpc/powerpc64/ppc-mcount.S \ sysdeps/unix/sysv/linux/s390/s390-64/syscall.S # Omit change that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
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<https://www.gnu.org/licenses/>. */
Update. * sysdeps/x86_64/dl-machine.h (elf_machine_runtime_setup): Declare external functions with hidden attribute. (elf_machine_rela): Optimize. * sysdeps/x86_64/memset.S: New file. * sysdeps/x86_64/bzero.S: New file. * sysdeps/x86_64/stpcpy.S: New file. * sysdeps/x86_64/strcat.S: New file. * sysdeps/x86_64/strchr.S: New file. * sysdeps/x86_64/strcpy.S: New file. * sysdeps/x86_64/strcspn.S: New file. * sysdeps/x86_64/strlen.S: New file. * sysdeps/x86_64/strpbrk.S: New file. * sysdeps/x86_64/strspn.S: New file. * sysdeps/x86_64/strcmp.S: New file. * sysdeps/x86_64/strtok_r.S: New file. * sysdeps/x86_64/strtok.S: New file. * sysdeps/x86_64/memcpy.S: New file. * sysdeps/x86_64/mempcpy.S: New file.
2002-08-31 17:45:33 +00:00
#include <sysdep.h>
x86: Add support for building {w}memset{_chk} with explicit ISA level 1. Refactor files so that all implementations are in the multiarch directory - Moved the implementation portion of memset sse2 from memset.S to multiarch/memset-sse2.S - The non-multiarch file now only includes one of the implementations in the multiarch directory based on the compiled ISA level (only used for non-multiarch builds. Otherwise we go through the ifunc selector). 2. Add ISA level build guards to different implementations. - I.e memset-avx2-unaligned-erms.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 (memset-evex-unaligned-erms.S). 3. Add new multiarch/rtld-memset.S that just include the non-multiarch memset.S which will in turn select the best implementation based on the compiled ISA level. 4. 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.
2022-06-29 23:07:06 +00:00
#define MEMSET_SYMBOL(p,s) memset
#define MEMSET_CHK_SYMBOL(p,s) p
x86: Optimize memset-vec-unaligned-erms.S No bug. Optimization are 1. change control flow for L(more_2x_vec) to fall through to loop and jump for L(less_4x_vec) and L(less_8x_vec). This uses less code size and saves jumps for length > 4x VEC_SIZE. 2. For EVEX/AVX512 move L(less_vec) closer to entry. 3. Avoid complex address mode for length > 2x VEC_SIZE 4. Slightly better aligning code for the loop from the perspective of code size and uops. 5. Align targets so they make full use of their fetch block and if possible cache line. 6. Try and reduce total number of icache lines that will need to be pulled in for a given length. 7. Include "local" version of stosb target. For AVX2/EVEX/AVX512 jumping to the stosb target in the sse2 code section will almost certainly be to a new page. The new version does increase code size marginally by duplicating the target but should get better iTLB behavior as a result. test-memset, test-wmemset, and test-bzero are all passing. Signed-off-by: Noah Goldstein <goldstein.w.n@gmail.com> Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
2021-09-20 21:20:15 +00:00
x86: Add support for building {w}memset{_chk} with explicit ISA level 1. Refactor files so that all implementations are in the multiarch directory - Moved the implementation portion of memset sse2 from memset.S to multiarch/memset-sse2.S - The non-multiarch file now only includes one of the implementations in the multiarch directory based on the compiled ISA level (only used for non-multiarch builds. Otherwise we go through the ifunc selector). 2. Add ISA level build guards to different implementations. - I.e memset-avx2-unaligned-erms.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 (memset-evex-unaligned-erms.S). 3. Add new multiarch/rtld-memset.S that just include the non-multiarch memset.S which will in turn select the best implementation based on the compiled ISA level. 4. 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.
2022-06-29 23:07:06 +00:00
#define WMEMSET_SYMBOL(p,s) __wmemset
#define WMEMSET_CHK_SYMBOL(p,s) p
X86-64: Remove the previous SSE2/AVX2 memsets Since the new SSE2/AVX2 memsets are faster than the previous ones, we can remove the previous SSE2/AVX2 memsets and replace them with the new ones. This reduces the size of libc.so by about 900 bytes. No change in IFUNC selection if SSE2 and AVX2 memsets weren't used before. If SSE2 or AVX2 memset was used, the new SSE2 or AVX2 memset optimized with Enhanced REP STOSB will be used for processors with ERMS. The new AVX512 memset will be used for processors with AVX512 which prefer vzeroupper. [BZ #19881] * sysdeps/x86_64/multiarch/memset-sse2-unaligned-erms.S: Folded into ... * sysdeps/x86_64/memset.S: This. (__bzero): Removed. (__memset_tail): Likewise. (__memset_chk): Likewise. (memset): Likewise. (MEMSET_CHK_SYMBOL): New. Define only if MEMSET_SYMBOL isn't defined. (MEMSET_SYMBOL): Define only if MEMSET_SYMBOL isn't defined. * sysdeps/x86_64/multiarch/memset-avx2.S: Removed. (__memset_zero_constant_len_parameter): Check SHARED instead of PIC. * sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Remove memset-avx2 and memset-sse2-unaligned-erms. * sysdeps/x86_64/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Remove __memset_chk_sse2, __memset_chk_avx2, __memset_sse2 and __memset_avx2_unaligned. * sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S (__bzero): Enabled. * sysdeps/x86_64/multiarch/memset.S (memset): Replace __memset_sse2 and __memset_avx2 with __memset_sse2_unaligned and __memset_avx2_unaligned. Use __memset_sse2_unaligned_erms or __memset_avx2_unaligned_erms if processor has ERMS. Support __memset_avx512_unaligned_erms and __memset_avx512_unaligned. (memset): Removed. (__memset_chk): Likewise. (MEMSET_SYMBOL): New. (libc_hidden_builtin_def): Replace __memset_sse2 with __memset_sse2_unaligned. * sysdeps/x86_64/multiarch/memset_chk.S (__memset_chk): Replace __memset_chk_sse2 and __memset_chk_avx2 with __memset_chk_sse2_unaligned and __memset_chk_avx2_unaligned_erms. Use __memset_chk_sse2_unaligned_erms or __memset_chk_avx2_unaligned_erms if processor has ERMS. Support __memset_chk_avx512_unaligned_erms and __memset_chk_avx512_unaligned.
2016-06-08 20:55:45 +00:00
x86: Add support for building {w}memset{_chk} with explicit ISA level 1. Refactor files so that all implementations are in the multiarch directory - Moved the implementation portion of memset sse2 from memset.S to multiarch/memset-sse2.S - The non-multiarch file now only includes one of the implementations in the multiarch directory based on the compiled ISA level (only used for non-multiarch builds. Otherwise we go through the ifunc selector). 2. Add ISA level build guards to different implementations. - I.e memset-avx2-unaligned-erms.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 (memset-evex-unaligned-erms.S). 3. Add new multiarch/rtld-memset.S that just include the non-multiarch memset.S which will in turn select the best implementation based on the compiled ISA level. 4. 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.
2022-06-29 23:07:06 +00:00
#define DEFAULT_IMPL_V1 "multiarch/memset-sse2-unaligned-erms.S"
#define DEFAULT_IMPL_V3 "multiarch/memset-avx2-unaligned-erms.S"
#define DEFAULT_IMPL_V4 "multiarch/memset-evex-unaligned-erms.S"
X86-64: Remove the previous SSE2/AVX2 memsets Since the new SSE2/AVX2 memsets are faster than the previous ones, we can remove the previous SSE2/AVX2 memsets and replace them with the new ones. This reduces the size of libc.so by about 900 bytes. No change in IFUNC selection if SSE2 and AVX2 memsets weren't used before. If SSE2 or AVX2 memset was used, the new SSE2 or AVX2 memset optimized with Enhanced REP STOSB will be used for processors with ERMS. The new AVX512 memset will be used for processors with AVX512 which prefer vzeroupper. [BZ #19881] * sysdeps/x86_64/multiarch/memset-sse2-unaligned-erms.S: Folded into ... * sysdeps/x86_64/memset.S: This. (__bzero): Removed. (__memset_tail): Likewise. (__memset_chk): Likewise. (memset): Likewise. (MEMSET_CHK_SYMBOL): New. Define only if MEMSET_SYMBOL isn't defined. (MEMSET_SYMBOL): Define only if MEMSET_SYMBOL isn't defined. * sysdeps/x86_64/multiarch/memset-avx2.S: Removed. (__memset_zero_constant_len_parameter): Check SHARED instead of PIC. * sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Remove memset-avx2 and memset-sse2-unaligned-erms. * sysdeps/x86_64/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Remove __memset_chk_sse2, __memset_chk_avx2, __memset_sse2 and __memset_avx2_unaligned. * sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S (__bzero): Enabled. * sysdeps/x86_64/multiarch/memset.S (memset): Replace __memset_sse2 and __memset_avx2 with __memset_sse2_unaligned and __memset_avx2_unaligned. Use __memset_sse2_unaligned_erms or __memset_avx2_unaligned_erms if processor has ERMS. Support __memset_avx512_unaligned_erms and __memset_avx512_unaligned. (memset): Removed. (__memset_chk): Likewise. (MEMSET_SYMBOL): New. (libc_hidden_builtin_def): Replace __memset_sse2 with __memset_sse2_unaligned. * sysdeps/x86_64/multiarch/memset_chk.S (__memset_chk): Replace __memset_chk_sse2 and __memset_chk_avx2 with __memset_chk_sse2_unaligned and __memset_chk_avx2_unaligned_erms. Use __memset_chk_sse2_unaligned_erms or __memset_chk_avx2_unaligned_erms if processor has ERMS. Support __memset_chk_avx512_unaligned_erms and __memset_chk_avx512_unaligned.
2016-06-08 20:55:45 +00:00
x86: Add support for building {w}memset{_chk} with explicit ISA level 1. Refactor files so that all implementations are in the multiarch directory - Moved the implementation portion of memset sse2 from memset.S to multiarch/memset-sse2.S - The non-multiarch file now only includes one of the implementations in the multiarch directory based on the compiled ISA level (only used for non-multiarch builds. Otherwise we go through the ifunc selector). 2. Add ISA level build guards to different implementations. - I.e memset-avx2-unaligned-erms.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 (memset-evex-unaligned-erms.S). 3. Add new multiarch/rtld-memset.S that just include the non-multiarch memset.S which will in turn select the best implementation based on the compiled ISA level. 4. 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.
2022-06-29 23:07:06 +00:00
#include "isa-default-impl.h"
Update. * sysdeps/x86_64/dl-machine.h (elf_machine_runtime_setup): Declare external functions with hidden attribute. (elf_machine_rela): Optimize. * sysdeps/x86_64/memset.S: New file. * sysdeps/x86_64/bzero.S: New file. * sysdeps/x86_64/stpcpy.S: New file. * sysdeps/x86_64/strcat.S: New file. * sysdeps/x86_64/strchr.S: New file. * sysdeps/x86_64/strcpy.S: New file. * sysdeps/x86_64/strcspn.S: New file. * sysdeps/x86_64/strlen.S: New file. * sysdeps/x86_64/strpbrk.S: New file. * sysdeps/x86_64/strspn.S: New file. * sysdeps/x86_64/strcmp.S: New file. * sysdeps/x86_64/strtok_r.S: New file. * sysdeps/x86_64/strtok.S: New file. * sysdeps/x86_64/memcpy.S: New file. * sysdeps/x86_64/mempcpy.S: New file.
2002-08-31 17:45:33 +00:00
Update. * sysdeps/i386/fpu/ftestexcept.c: Also check SSE status word. * include/signal.h: Use libc_hidden_proto for sigaddset and sigdelset. * signal/sigaddset.c: Add libc_hidden_def. * signal/sigdelset.c: Likewise. 2003-04-29 Jakub Jelinek <jakub@redhat.com> * sysdeps/i386/i486/string-inlines.c (__memcpy_g, __strchr_g): Move to the end of the file. * configure.in: Change __oline__ to $LINENO. (HAVE_BUILTIN_REDIRECTION): New check. * config.h.in (HAVE_BUILTIN_REDIRECTION): Add. * include/libc-symbols.h (libc_hidden_builtin_proto, libc_hidden_builtin_def, libc_hidden_builtin_weak, libc_hidden_builtin_ver): Define. * include/string.h (memchr, memcpy, memmove, memset, strcat, strchr, strcmp, strcpy, strcspn, strlen, strncmp, strncpy, strpbrk, strrchr, strspn, strstr): Add libc_hidden_builtin_proto. * intl/plural.y: Include string.h. * sysdeps/alpha/alphaev6/memchr.S (memchr): Add libc_hidden_builtin_def. * sysdeps/alpha/alphaev6/memcpy.S (memcpy): Likewise. * sysdeps/alpha/alphaev6/memset.S (memset): Likewise. * sysdeps/alpha/alphaev67/strcat.S (strcat): Likewise. * sysdeps/alpha/alphaev67/strchr.S (strchr): Likewise. * sysdeps/alpha/alphaev67/strlen.S (strlen): Likewise. * sysdeps/alpha/alphaev67/strrchr.S (strrchr): Likewise. * sysdeps/alpha/memchr.S (memchr): Likewise. * sysdeps/alpha/memset.S (memset): Likewise. * sysdeps/alpha/strcat.S (strcat): Likewise. * sysdeps/alpha/strchr.S (strchr): Likewise. * sysdeps/alpha/strcmp.S (strcmp): Likewise. * sysdeps/alpha/strcpy.S (strcpy): Likewise. * sysdeps/alpha/strlen.S (strlen): Likewise. * sysdeps/alpha/strncmp.S (strncmp): Likewise. * sysdeps/alpha/strncpy.S (strncpy): Likewise. * sysdeps/alpha/strrchr.S (strrchr): Likewise. * sysdeps/arm/memset.S (memset): Likewise. * sysdeps/arm/strlen.S (strlen): Likewise. * sysdeps/generic/memchr.c (memchr): Likewise. * sysdeps/generic/memcpy.c (memcpy): Likewise. * sysdeps/generic/memmove.c (memmove): Likewise. * sysdeps/generic/memset.c (memset): Likewise. * sysdeps/generic/strcat.c (strcat): Likewise. * sysdeps/generic/strchr.c (strchr): Likewise. * sysdeps/generic/strcmp.c (strcmp): Likewise. * sysdeps/generic/strcpy.c (strcpy): Likewise. * sysdeps/generic/strcspn.c (strcspn): Likewise. * sysdeps/generic/strlen.c (strlen): Likewise. * sysdeps/generic/strncmp.c (strncmp): Likewise. * sysdeps/generic/strncpy.c (strncpy): Likewise. * sysdeps/generic/strpbrk.c (strpbrk): Likewise. * sysdeps/generic/strrchr.c (strrchr): Likewise. * sysdeps/generic/strspn.c (strspn): Likewise. * sysdeps/generic/strstr.c (strstr): Likewise. * sysdeps/i386/i486/strcat.S (strcat): Likewise. * sysdeps/i386/i486/strlen.S (strlen): Likewise. * sysdeps/i386/i586/memcpy.S (memcpy): Likewise. * sysdeps/i386/i586/memset.S (memset): Likewise. * sysdeps/i386/i586/strchr.S (strchr): Likewise. * sysdeps/i386/i586/strcpy.S (strcpy): Likewise. * sysdeps/i386/i586/strlen.S (strlen): Likewise. * sysdeps/i386/i686/memcpy.S (memcpy): Likewise. * sysdeps/i386/i686/memmove.S (memmove): Likewise. * sysdeps/i386/i686/memset.S (memset): Likewise. * sysdeps/i386/i686/strcmp.S (strcmp): Likewise. * sysdeps/i386/memchr.S (memchr): Likewise. * sysdeps/i386/memset.c (memset): Likewise. * sysdeps/i386/strchr.S (strchr): Likewise. * sysdeps/i386/strcspn.S (strcspn): Likewise. * sysdeps/i386/strlen.c (strlen): Likewise. * sysdeps/i386/strpbrk.S (strpbrk): Likewise. * sysdeps/i386/strrchr.S (strrchr): Likewise. * sysdeps/i386/strspn.S (strspn): Likewise. * sysdeps/ia64/memchr.S (memchr): Likewise. * sysdeps/ia64/memcpy.S (memcpy): Likewise. * sysdeps/ia64/memmove.S (memmove): Likewise. * sysdeps/ia64/memset.S (memset): Likewise. * sysdeps/ia64/strcat.S (strcat): Likewise. * sysdeps/ia64/strchr.S (strchr): Likewise. * sysdeps/ia64/strcmp.S (strcmp): Likewise. * sysdeps/ia64/strcpy.S (strcpy): Likewise. * sysdeps/ia64/strlen.S (strlen): Likewise. * sysdeps/ia64/strncmp.S (strncmp): Likewise. * sysdeps/ia64/strncpy.S (strncpy): Likewise. * sysdeps/m68k/memchr.S (memchr): Likewise. * sysdeps/m68k/strchr.S (strchr): Likewise. * sysdeps/mips/mips64/memcpy.S (memcpy): Likewise. * sysdeps/mips/mips64/memset.S (memset): Likewise. * sysdeps/mips/memcpy.S (memcpy): Likewise. * sysdeps/mips/memset.S (memset): Likewise. * sysdeps/powerpc/powerpc32/memset.S (memset): Likewise. * sysdeps/powerpc/powerpc32/strchr.S (strchr): Likewise. * sysdeps/powerpc/powerpc32/strcmp.S (strcmp): Likewise. * sysdeps/powerpc/powerpc32/strcpy.S (strcpy): Likewise. * sysdeps/powerpc/powerpc32/strlen.S (strlen): Likewise. * sysdeps/powerpc/powerpc64/memcpy.S (memcpy): Likewise. * sysdeps/powerpc/powerpc64/memset.S (memset): Likewise. * sysdeps/powerpc/powerpc64/strchr.S (strchr): Likewise. * sysdeps/powerpc/powerpc64/strcmp.S (strcmp): Likewise. * sysdeps/powerpc/powerpc64/strcpy.S (strcpy): Likewise. * sysdeps/powerpc/powerpc64/strlen.S (strlen): Likewise. * sysdeps/powerpc/strcat.c (strcat): Likewise. * sysdeps/sparc/sparc32/memchr.S (memchr): Likewise. * sysdeps/sparc/sparc32/memcpy.S (memcpy): Likewise. * sysdeps/sparc/sparc32/memset.S (memset): Likewise. * sysdeps/sparc/sparc32/strcat.S (strcat): Likewise. * sysdeps/sparc/sparc32/strchr.S (strchr, strrchr): Likewise. * sysdeps/sparc/sparc32/strcmp.S (strcmp): Likewise. * sysdeps/sparc/sparc32/strcpy.S (strcpy): Likewise. * sysdeps/sparc/sparc32/strlen.S (strlen): Likewise. * sysdeps/sparc/sparc64/sparcv9b/memcpy.S (memcpy, memmove): Likewise. * sysdeps/sparc/sparc64/memchr.S (memchr): Likewise. * sysdeps/sparc/sparc64/memcpy.S (memcpy, memmove): Likewise. * sysdeps/sparc/sparc64/memset.S (memset): Likewise. * sysdeps/sparc/sparc64/strcat.S (strcat): Likewise. * sysdeps/sparc/sparc64/strchr.S (strchr, strrchr): Likewise. * sysdeps/sparc/sparc64/strcmp.S (strcmp): Likewise. * sysdeps/sparc/sparc64/strcpy.S (strcpy): Likewise. * sysdeps/sparc/sparc64/strcspn.S (strcspn): Likewise. * sysdeps/sparc/sparc64/strlen.S (strlen): Likewise. * sysdeps/sparc/sparc64/strncmp.S (strncmp): Likewise. * sysdeps/sparc/sparc64/strncpy.S (strncpy): Likewise. * sysdeps/sparc/sparc64/strpbrk.S (strpbrk): Likewise. * sysdeps/sparc/sparc64/strspn.S (strspn): Likewise. * sysdeps/sh/memcpy.S (memcpy): Likewise. * sysdeps/sh/memset.S (memset): Likewise. * sysdeps/sh/strlen.S (strlen): Likewise. * sysdeps/s390/s390-32/memchr.S (memchr): Likewise. * sysdeps/s390/s390-32/memcpy.S (memcpy): Likewise. * sysdeps/s390/s390-32/memset.S (memset): Likewise. * sysdeps/s390/s390-32/strcmp.S (strcmp): Likewise. * sysdeps/s390/s390-32/strcpy.S (strcpy): Likewise. * sysdeps/s390/s390-32/strncpy.S (strncpy): Likewise. * sysdeps/s390/s390-64/memchr.S (memchr): Likewise. * sysdeps/s390/s390-64/memcpy.S (memcpy): Likewise. * sysdeps/s390/s390-64/memset.S (memset): Likewise. * sysdeps/s390/s390-64/strcmp.S (strcmp): Likewise. * sysdeps/s390/s390-64/strcpy.S (strcpy): Likewise. * sysdeps/s390/s390-64/strncpy.S (strncpy): Likewise. * sysdeps/x86_64/memcpy.S (memcpy): Likewise. * sysdeps/x86_64/memset.S (memset): Likewise. * sysdeps/x86_64/strcat.S (strcat): Likewise. * sysdeps/x86_64/strchr.S (strchr): Likewise. * sysdeps/x86_64/strcmp.S (strcmp): Likewise. * sysdeps/x86_64/strcpy.S (strcpy): Likewise. * sysdeps/x86_64/strcspn.S (strcspn): Likewise. * sysdeps/x86_64/strlen.S (strlen): Likewise. * sysdeps/x86_64/strspn.S (strspn): Likewise. * string/string-inlines.c: Move... * sysdeps/generic/string-inlines.c: ...here. (__memcpy_g, __strchr_g): Remove. (__NO_INLINE__): Define before including <string.h>, undefine after. Include bits/string.h and bits/string2.h. * sysdeps/i386/i486/string-inlines.c: New file. * sysdeps/i386/string-inlines.c: New file. * sysdeps/i386/i486/Versions: Remove. All GLIBC_2.1.1 symbols moved... * sysdeps/i386/Versions (libc): ...here. 2003-04-29 Ulrich Drepper <drepper@redhat.com>
2003-04-29 22:49:58 +00:00
libc_hidden_builtin_def (memset)
x86_64: Fix build with --disable-multiarch (BZ 30721) With multiarch disabled, the default memmove implementation provides the fortify routines for memcpy, mempcpy, and memmove. However, it does not provide the internal hidden definitions used when building with fortify enabled. The memset has a similar issue. Checked on x86_64-linux-gnu building with different options: default and --disable-multi-arch plus default, --disable-default-pie, --enable-fortify-source={2,3}, and --enable-fortify-source={2,3} with --disable-default-pie. Tested-by: Andreas K. Huettel <dilfridge@gentoo.org> Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
2023-08-08 12:27:54 +00:00
libc_hidden_builtin_def (__memset_chk)
* sysdeps/unix/sysv/linux/libc_fatal.c: Print backtrace and memory map if requested. * debug/chk_fail.c: Request backtrace and memory map dump. * Versions.def: Add GLIBC_2.4 for libc. * debug/fgets_chk.c: New file. * debug/fgets_u_chk.c: New file. * debug/getcwd_chk.c: New file. * debug/getwd_chk.c: New file. * debug/readlink_chk.c: New file. * debug/read_chk.c: New file. * debug/pread_chk.c: New file. * debug/pread64_chk.c: New file. * debug/recv_chk.c: New file. * debug/recvfrom_chk.c: New file. * debug/Versions: Add all new functions with version GLIBC_2.4. * debug/Makefile (routines): Add fgets_chk, fgets_u_chk, read_chk, pread_chk, pread64_chk, recv_chk, recvfrom_chk, readlink_chk, getwd_chk, and getcwd_chk. Plus appropriate CFLAGS definitions. * debug/tst-chk1.c: Add more tests. * libio/bits/stdio2.h: Add macros for fgets and fgets_unlocked. * include/stdio.h: Declare __fgets_chk and __fgets_unlocked_chk. * posix/unistd.h: Include <bits/unistd.h> for fortification. * posix/bits/unistd.h: New file. * posix/Makefile (headers): Add bits/unistd.h. * socket/sys/socket.h: Include <bits/socket2.h> for fortification. * socket/bits/socket2.h: New file. * socket/Makefile (headers): Add bits/socket2.h. * string/bits/string3.h: Extend memset macro to check for zero 3rd parameter and use __memset_zero_constant_len_parameter in that case. * sysdeps/generic/memset_chk.c: Add __memset_zero_constant_len_parameter alias and linker warning. * debug/Versions: Add __memset_zero_constant_len_parameter to libc with version GLIBC_2.4. * sysdeps/generic/bits/types.h: Don't unnecessarily use __extension__ in __STD_TYPE definition. 2005-02-21 Jakub Jelinek <jakub@redhat.com> * malloc/malloc.c (malloc_printerr): If MALLOC_CHECK_={5,7}, print the error message rather than program name. 2005-02-21 Ulrich Drepper <drepper@redhat.com>
2005-02-21 23:14:10 +00:00
x86-64: Optimize wmemset with SSE2/AVX2/AVX512 The difference between memset and wmemset is byte vs int. Add stubs to SSE2/AVX2/AVX512 memset for wmemset with updated constant and size: SSE2 wmemset: shl $0x2,%rdx movd %esi,%xmm0 mov %rdi,%rax pshufd $0x0,%xmm0,%xmm0 jmp entry_from_wmemset SSE2 memset: movd %esi,%xmm0 mov %rdi,%rax punpcklbw %xmm0,%xmm0 punpcklwd %xmm0,%xmm0 pshufd $0x0,%xmm0,%xmm0 entry_from_wmemset: Since the ERMS versions of wmemset requires "rep stosl" instead of "rep stosb", only the vector store stubs of SSE2/AVX2/AVX512 wmemset are added. The SSE2 wmemset is about 3X faster and the AVX2 wmemset is about 6X faster on Haswell. * include/wchar.h (__wmemset_chk): New. * sysdeps/x86_64/memset.S (VDUP_TO_VEC0_AND_SET_RETURN): Renamed to MEMSET_VDUP_TO_VEC0_AND_SET_RETURN. (WMEMSET_VDUP_TO_VEC0_AND_SET_RETURN): New. (WMEMSET_CHK_SYMBOL): Likewise. (WMEMSET_SYMBOL): Likewise. (__wmemset): Add hidden definition. (wmemset): Add weak hidden definition. * sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add wmemset_chk-nonshared. * sysdeps/x86_64/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Add __wmemset_sse2_unaligned, __wmemset_avx2_unaligned, __wmemset_avx512_unaligned, __wmemset_chk_sse2_unaligned, __wmemset_chk_avx2_unaligned and __wmemset_chk_avx512_unaligned. * sysdeps/x86_64/multiarch/memset-avx2-unaligned-erms.S (VDUP_TO_VEC0_AND_SET_RETURN): Renamed to ... (MEMSET_VDUP_TO_VEC0_AND_SET_RETURN): This. (WMEMSET_VDUP_TO_VEC0_AND_SET_RETURN): New. (WMEMSET_SYMBOL): Likewise. * sysdeps/x86_64/multiarch/memset-avx512-unaligned-erms.S (VDUP_TO_VEC0_AND_SET_RETURN): Renamed to ... (MEMSET_VDUP_TO_VEC0_AND_SET_RETURN): This. (WMEMSET_VDUP_TO_VEC0_AND_SET_RETURN): New. (WMEMSET_SYMBOL): Likewise. * sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S: Updated. (WMEMSET_CHK_SYMBOL): New. (WMEMSET_CHK_SYMBOL (__wmemset_chk, unaligned)): Likewise. (WMEMSET_SYMBOL (__wmemset, unaligned)): Likewise. * sysdeps/x86_64/multiarch/memset.S (WMEMSET_SYMBOL): New. (libc_hidden_builtin_def): Also define __GI_wmemset and __GI___wmemset. (weak_alias): New. * sysdeps/x86_64/multiarch/wmemset.c: New file. * sysdeps/x86_64/multiarch/wmemset.h: Likewise. * sysdeps/x86_64/multiarch/wmemset_chk-nonshared.S: Likewise. * sysdeps/x86_64/multiarch/wmemset_chk.c: Likewise. * sysdeps/x86_64/wmemset.c: Likewise. * sysdeps/x86_64/wmemset_chk.c: Likewise.
2017-06-05 18:09:48 +00:00
#if IS_IN (libc)
libc_hidden_def (__wmemset)
weak_alias (__wmemset, wmemset)
libc_hidden_weak (wmemset)
#endif
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