mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-25 20:21:07 +00:00
67 lines
1.8 KiB
ArmAsm
67 lines
1.8 KiB
ArmAsm
/* memcmp - compare two memory blocks. 32 bit S/390 version.
|
|
Copyright (C) 2012-2014 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
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
|
|
#include "sysdep.h"
|
|
#include "asm-syntax.h"
|
|
|
|
/* INPUT PARAMETERS
|
|
%r2 = address of first memory area
|
|
%r3 = address of second memory area
|
|
%r4 = number of bytes to compare. */
|
|
|
|
.text
|
|
#ifdef USE_MULTIARCH
|
|
ENTRY(memcmp_g5)
|
|
#else
|
|
ENTRY(memcmp)
|
|
#endif
|
|
.machine "g5"
|
|
basr %r5,0
|
|
.L_G5_16:
|
|
ltr %r4,%r4
|
|
je .L_G5_4
|
|
ahi %r4,-1
|
|
lr %r1,%r4
|
|
srl %r1,8
|
|
ltr %r1,%r1
|
|
jne .L_G5_12
|
|
ex %r4,.L_G5_17-.L_G5_16(%r5)
|
|
.L_G5_4:
|
|
ipm %r2
|
|
sll %r2,2
|
|
sra %r2,30
|
|
br %r14
|
|
.L_G5_12:
|
|
clc 0(256,%r3),0(%r2)
|
|
jne .L_G5_4
|
|
la %r3,256(%r3)
|
|
la %r2,256(%r2)
|
|
brct %r1,.L_G5_12
|
|
ex %r4,.L_G5_17-.L_G5_16(%r5)
|
|
j .L_G5_4
|
|
.L_G5_17:
|
|
clc 0(1,%r3),0(%r2)
|
|
#ifdef USE_MULTIARCH
|
|
END(memcmp_g5)
|
|
#else
|
|
END(memcmp)
|
|
libc_hidden_builtin_def (memcmp)
|
|
weak_alias(memcmp, bcmp)
|
|
#endif
|