mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-11 07:40:05 +00:00
51 lines
1.4 KiB
ArmAsm
51 lines
1.4 KiB
ArmAsm
/* Copyright (C) 1993, 1995, 1997, 2005 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>
|
|
|
|
#ifndef SYS_brk
|
|
#define SYS_brk 17
|
|
#endif
|
|
|
|
#ifndef C_SYMBOL_NAME
|
|
#define C_SYMBOL_NAME(name) _##name
|
|
#endif
|
|
|
|
.data
|
|
.global C_SYMBOL_NAME(__curbrk)
|
|
C_LABEL(__curbrk)
|
|
.long C_SYMBOL_NAME(_end)
|
|
|
|
.text
|
|
ENTRY (__brk)
|
|
add %o0, 7, %o0
|
|
andn %o0, 7, %o0
|
|
mov SYS_brk, %g1
|
|
mov %o0, %o1 /* Save rounded value. */
|
|
ta %g0
|
|
bcs error
|
|
sethi %hi(C_SYMBOL_NAME(__curbrk)), %g1
|
|
st %o1, [%g1 + %lo(C_SYMBOL_NAME(__curbrk))]
|
|
ret
|
|
error: sethi %hi(C_SYMBOL_NAME(errno)), %g1
|
|
st %o0, [%g1 + %lo(C_SYMBOL_NAME(errno))]
|
|
sub %g0, 1, %o0
|
|
retl
|
|
nop /* Fill the delay slot. */
|
|
|
|
weak_alias (__brk, brk)
|