b9244ff551
Test: run bionic unit test in aosp_cf_x86_phone emulator Change-Id: Ib0c0de37cd38d24bfce2dfbe35b8fd8edff004af
82 lines
1.3 KiB
ArmAsm
82 lines
1.3 KiB
ArmAsm
/* $OpenBSD: strcmp.S,v 1.3 2005/08/07 11:30:38 espie Exp $ */
|
|
/*
|
|
* Written by J.T. Conklin <jtc@netbsd.org>.
|
|
* Public domain.
|
|
*/
|
|
|
|
#include <private/bionic_asm.h>
|
|
|
|
/*
|
|
* NOTE: I've unrolled the loop eight times: large enough to make a
|
|
* significant difference, and small enough not to totally trash the
|
|
* cache.
|
|
*/
|
|
|
|
ENTRY(strcmp_generic)
|
|
movl 0x04(%esp),%eax
|
|
movl 0x08(%esp),%edx
|
|
jmp L2 /* Jump into the loop! */
|
|
|
|
.align 2,0x90
|
|
L1: incl %eax
|
|
incl %edx
|
|
L2: movb (%eax),%cl
|
|
testb %cl,%cl /* null terminator??? */
|
|
jz L3
|
|
cmpb %cl,(%edx) /* chars match??? */
|
|
jne L3
|
|
incl %eax
|
|
incl %edx
|
|
movb (%eax),%cl
|
|
testb %cl,%cl
|
|
jz L3
|
|
cmpb %cl,(%edx)
|
|
jne L3
|
|
incl %eax
|
|
incl %edx
|
|
movb (%eax),%cl
|
|
testb %cl,%cl
|
|
jz L3
|
|
cmpb %cl,(%edx)
|
|
jne L3
|
|
incl %eax
|
|
incl %edx
|
|
movb (%eax),%cl
|
|
testb %cl,%cl
|
|
jz L3
|
|
cmpb %cl,(%edx)
|
|
jne L3
|
|
incl %eax
|
|
incl %edx
|
|
movb (%eax),%cl
|
|
testb %cl,%cl
|
|
jz L3
|
|
cmpb %cl,(%edx)
|
|
jne L3
|
|
incl %eax
|
|
incl %edx
|
|
movb (%eax),%cl
|
|
testb %cl,%cl
|
|
jz L3
|
|
cmpb %cl,(%edx)
|
|
jne L3
|
|
incl %eax
|
|
incl %edx
|
|
movb (%eax),%cl
|
|
testb %cl,%cl
|
|
jz L3
|
|
cmpb %cl,(%edx)
|
|
jne L3
|
|
incl %eax
|
|
incl %edx
|
|
movb (%eax),%cl
|
|
testb %cl,%cl
|
|
jz L3
|
|
cmpb %cl,(%edx)
|
|
je L1
|
|
.align 2, 0x90
|
|
L3: movzbl (%eax),%eax /* unsigned comparison */
|
|
movzbl (%edx),%edx
|
|
subl %edx,%eax
|
|
ret
|
|
END(strcmp_generic)
|