mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 04:50:07 +00:00
52 lines
1.3 KiB
ArmAsm
52 lines
1.3 KiB
ArmAsm
/* Highly optimized version for ix86, x>=6.
|
|
Copyright (C) 1999-2023 Free Software Foundation, Inc.
|
|
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
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <sysdep.h>
|
|
#include "asm-syntax.h"
|
|
|
|
#define PARMS 4 /* no space for saved regs */
|
|
#define STR1 PARMS
|
|
#define STR2 STR1+4
|
|
|
|
.text
|
|
ENTRY (strcmp)
|
|
|
|
movl STR1(%esp), %ecx
|
|
movl STR2(%esp), %edx
|
|
|
|
L(oop): movb (%ecx), %al
|
|
cmpb (%edx), %al
|
|
jne L(neq)
|
|
incl %ecx
|
|
incl %edx
|
|
testb %al, %al
|
|
jnz L(oop)
|
|
|
|
xorl %eax, %eax
|
|
/* when strings are equal, pointers rest one beyond
|
|
the end of the NUL terminators. */
|
|
ret
|
|
|
|
L(neq): movl $1, %eax
|
|
movl $-1, %ecx
|
|
cmovbl %ecx, %eax
|
|
|
|
ret
|
|
END (strcmp)
|
|
libc_hidden_builtin_def (strcmp)
|