mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-15 09:30:06 +00:00
5a82c74822
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
123 lines
4.2 KiB
ArmAsm
123 lines
4.2 KiB
ArmAsm
/* strcspn (str, ss) -- Return the length of the initial segment of STR
|
|
which contains no characters from SS.
|
|
For AMD x86-64.
|
|
Copyright (C) 1994-2019 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>.
|
|
Bug fixes by Alan Modra <Alan@SPRI.Levels.UniSA.Edu.Au>.
|
|
Adopted for x86-64 by Andreas Jaeger <aj@suse.de>.
|
|
|
|
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
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <sysdep.h>
|
|
#include "asm-syntax.h"
|
|
|
|
.text
|
|
ENTRY (strcspn)
|
|
|
|
movq %rdi, %rdx /* Save SRC. */
|
|
|
|
/* First we create a table with flags for all possible characters.
|
|
For the ASCII (7bit/8bit) or ISO-8859-X character sets which are
|
|
supported by the C string functions we have 256 characters.
|
|
Before inserting marks for the stop characters we clear the whole
|
|
table. */
|
|
movq %rdi, %r8 /* Save value. */
|
|
subq $256, %rsp /* Make space for 256 bytes. */
|
|
cfi_adjust_cfa_offset(256)
|
|
movl $32, %ecx /* 32*8 bytes = 256 bytes. */
|
|
movq %rsp, %rdi
|
|
xorl %eax, %eax /* We store 0s. */
|
|
cld
|
|
rep
|
|
stosq
|
|
|
|
movq %rsi, %rax /* Setup skipset. */
|
|
|
|
/* For understanding the following code remember that %rcx == 0 now.
|
|
Although all the following instruction only modify %cl we always
|
|
have a correct zero-extended 64-bit value in %rcx. */
|
|
|
|
.p2align 4
|
|
L(2): movb (%rax), %cl /* get byte from skipset */
|
|
testb %cl, %cl /* is NUL char? */
|
|
jz L(1) /* yes => start compare loop */
|
|
movb %cl, (%rsp,%rcx) /* set corresponding byte in skipset table */
|
|
|
|
movb 1(%rax), %cl /* get byte from skipset */
|
|
testb $0xff, %cl /* is NUL char? */
|
|
jz L(1) /* yes => start compare loop */
|
|
movb %cl, (%rsp,%rcx) /* set corresponding byte in skipset table */
|
|
|
|
movb 2(%rax), %cl /* get byte from skipset */
|
|
testb $0xff, %cl /* is NUL char? */
|
|
jz L(1) /* yes => start compare loop */
|
|
movb %cl, (%rsp,%rcx) /* set corresponding byte in skipset table */
|
|
|
|
movb 3(%rax), %cl /* get byte from skipset */
|
|
addq $4, %rax /* increment skipset pointer */
|
|
movb %cl, (%rsp,%rcx) /* set corresponding byte in skipset table */
|
|
testb $0xff, %cl /* is NUL char? */
|
|
jnz L(2) /* no => process next dword from skipset */
|
|
|
|
L(1): leaq -4(%rdx), %rax /* prepare loop */
|
|
|
|
/* We use a neat trick for the following loop. Normally we would
|
|
have to test for two termination conditions
|
|
1. a character in the skipset was found
|
|
and
|
|
2. the end of the string was found
|
|
But as a sign that the character is in the skipset we store its
|
|
value in the table. But the value of NUL is NUL so the loop
|
|
terminates for NUL in every case. */
|
|
|
|
.p2align 4
|
|
L(3): addq $4, %rax /* adjust pointer for full loop round */
|
|
|
|
movb (%rax), %cl /* get byte from string */
|
|
cmpb %cl, (%rsp,%rcx) /* is it contained in skipset? */
|
|
je L(4) /* yes => return */
|
|
|
|
movb 1(%rax), %cl /* get byte from string */
|
|
cmpb %cl, (%rsp,%rcx) /* is it contained in skipset? */
|
|
je L(5) /* yes => return */
|
|
|
|
movb 2(%rax), %cl /* get byte from string */
|
|
cmpb %cl, (%rsp,%rcx) /* is it contained in skipset? */
|
|
jz L(6) /* yes => return */
|
|
|
|
movb 3(%rax), %cl /* get byte from string */
|
|
cmpb %cl, (%rsp,%rcx) /* is it contained in skipset? */
|
|
jne L(3) /* no => start loop again */
|
|
|
|
incq %rax /* adjust pointer */
|
|
L(6): incq %rax
|
|
L(5): incq %rax
|
|
|
|
L(4): addq $256, %rsp /* remove skipset */
|
|
cfi_adjust_cfa_offset(-256)
|
|
#ifdef USE_AS_STRPBRK
|
|
xorl %edx,%edx
|
|
orb %cl, %cl /* was last character NUL? */
|
|
cmovzq %rdx, %rax /* Yes: return NULL */
|
|
#else
|
|
subq %rdx, %rax /* we have to return the number of valid
|
|
characters, so compute distance to first
|
|
non-valid character */
|
|
#endif
|
|
ret
|
|
END (strcspn)
|
|
libc_hidden_builtin_def (strcspn)
|