69 lines
2.0 KiB
ArmAsm
69 lines
2.0 KiB
ArmAsm
|
/*-
|
||
|
|
* Copyright (c) 2003 Tim J. Robbins.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
|
|
* SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <machine/asm.h>
|
||
|
|
__FBSDID("$FreeBSD$");
|
||
|
|
|
||
|
|
/*
|
||
|
|
* size_t
|
||
|
|
* wcslen(const wchar_t *s) --
|
||
|
|
* Find the length of a wide character string.
|
||
|
|
*/
|
||
|
|
ENTRY(wcslen)
|
||
|
|
movl 4(%esp),%ecx /* String */
|
||
|
|
pushl %ebx
|
||
|
|
xorl %ebx,%ebx
|
||
|
|
xorl %eax,%eax
|
||
|
|
.p2align 4,0x90
|
||
|
|
L1: cmpl %ebx,(%ecx)
|
||
|
|
jz found0
|
||
|
|
cmpl %ebx,4(%ecx)
|
||
|
|
jz found1
|
||
|
|
cmpl %ebx,8(%ecx)
|
||
|
|
jz found2
|
||
|
|
cmpl %ebx,12(%ecx)
|
||
|
|
jz found3
|
||
|
|
cmpl %ebx,16(%ecx)
|
||
|
|
jz found4
|
||
|
|
cmpl %ebx,20(%ecx)
|
||
|
|
jz found5
|
||
|
|
cmpl %ebx,24(%ecx)
|
||
|
|
jz found6
|
||
|
|
cmpl %ebx,28(%ecx)
|
||
|
|
jz found7
|
||
|
|
leal 32(%ecx),%ecx
|
||
|
|
addl $8,%eax
|
||
|
|
jmp L1
|
||
|
|
found7: incl %eax
|
||
|
|
found6: incl %eax
|
||
|
|
found5: incl %eax
|
||
|
|
found4: incl %eax
|
||
|
|
found3: incl %eax
|
||
|
|
found2: incl %eax
|
||
|
|
found1: incl %eax
|
||
|
|
found0: popl %ebx
|
||
|
|
ret
|