newlib-cygwin/newlib/libc/machine/i386/strlen.S

36 lines
605 B
ArmAsm

/*
* ====================================================
* Copyright (C) 1998 by Cygnus Solutions. All rights reserved.
*
* Permission to use, copy, modify, and distribute this
* software is freely granted, provided that this notice
* is preserved.
* ====================================================
*/
#include "i386mach.h"
.global SYM (strlen)
SOTYPE_FUNCTION(strlen)
SYM (strlen):
pushl ebp
movl esp,ebp
pushl edi
movl 8(ebp),edx
cld
movl edx,edi
movl $4294967295,ecx
xor eax,eax
repnz
scasb
subl edx,edi
leal -1(edi),eax
leal -4(ebp),esp
popl edi
leave
ret