glibc/sysdeps/unix/bsd/vax/brk.S
1997-06-26 22:16:52 +00:00

48 lines
1.2 KiB
ArmAsm

/* Copyright (C) 1991, 1995, 1997 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <sysdep.h>
#ifndef SYS_brk
#define SYS_brk 17
#endif
#ifndef HAVE_GNU_LD
#define __end _end
#endif
.data
.globl ___curbrk
___curbrk:
.long __end
.text
ENTRY (__brk)
cmpl 4(ap), __end
bgeq 0f
movl __env, 4(ap)
0: chmk $SYS_brk
bcs 1f
movl 4(ap), ___curbrk
clrl r0
ret
1:
jmp syscall_error
weak_alias (__brk, brk)