forked from luck/tmp_suning_uos_patched
46 lines
625 B
ArmAsm
46 lines
625 B
ArmAsm
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* memcmp for PowerPC32
|
||
|
|
*
|
||
|
|
* Copyright (C) 1996 Paul Mackerras.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <asm/ppc_asm.h>
|
||
|
|
#include <asm/export.h>
|
||
|
|
|
||
|
|
.text
|
||
|
|
|
||
|
|
_GLOBAL(memcmp)
|
||
|
|
srawi. r7, r5, 2 /* Divide len by 4 */
|
||
|
|
mr r6, r3
|
||
|
|
beq- 3f
|
||
|
|
mtctr r7
|
||
|
|
li r7, 0
|
||
|
|
1: lwzx r3, r6, r7
|
||
|
|
lwzx r0, r4, r7
|
||
|
|
addi r7, r7, 4
|
||
|
|
cmplw cr0, r3, r0
|
||
|
|
bdnzt eq, 1b
|
||
|
|
bne 5f
|
||
|
|
3: andi. r3, r5, 3
|
||
|
|
beqlr
|
||
|
|
cmplwi cr1, r3, 2
|
||
|
|
blt- cr1, 4f
|
||
|
|
lhzx r3, r6, r7
|
||
|
|
lhzx r0, r4, r7
|
||
|
|
addi r7, r7, 2
|
||
|
|
subf. r3, r0, r3
|
||
|
|
beqlr cr1
|
||
|
|
bnelr
|
||
|
|
4: lbzx r3, r6, r7
|
||
|
|
lbzx r0, r4, r7
|
||
|
|
subf. r3, r0, r3
|
||
|
|
blr
|
||
|
|
5: li r3, 1
|
||
|
|
bgtlr
|
||
|
|
li r3, -1
|
||
|
|
blr
|
||
|
|
EXPORT_SYMBOL(memcmp)
|