mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-15 01:21:06 +00:00
08f43f9bbf
Add support for STT_GNU_IFUNC symbols and the new R_390_IRELATIVE relocation. Provide optimized version of memcpy, memset, and memcmp for z10 and z196.
65 lines
1.8 KiB
ArmAsm
65 lines
1.8 KiB
ArmAsm
/* Set a block of memory to some byte value. 64 bit S/390 version.
|
|
Copyright (C) 2001, 2003 Free Software Foundation, Inc.
|
|
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
|
|
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 memory area
|
|
%r3 = byte to fill memory with
|
|
%r4 = number of bytes to fill. */
|
|
|
|
.text
|
|
|
|
#ifdef USE_MULTIARCH
|
|
ENTRY(memset_z900)
|
|
#else
|
|
ENTRY(memset)
|
|
#endif
|
|
.machine "z900"
|
|
ltgr %r4,%r4
|
|
je .L_Z900_4
|
|
stc %r3,0(%r2)
|
|
cghi %r4,1
|
|
lgr %r1,%r2
|
|
je .L_Z900_4
|
|
aghi %r4,-2
|
|
srlg %r3,%r4,8
|
|
ltgr %r3,%r3
|
|
jne .L_Z900_14
|
|
.L_Z900_3:
|
|
larl %r3,.L_Z900_18
|
|
ex %r4,0(%r3)
|
|
.L_Z900_4:
|
|
br %r14
|
|
.L_Z900_14:
|
|
mvc 1(256,%r1),0(%r1)
|
|
la %r1,256(%r1)
|
|
brctg %r3,.L_Z900_14
|
|
j .L_Z900_3
|
|
.L_Z900_18:
|
|
mvc 1(1,%r1),0(%r1)
|
|
#ifdef USE_MULTIARCH
|
|
END(memset_z900)
|
|
#else
|
|
END(memset)
|
|
libc_hidden_builtin_def (memset)
|
|
#endif
|