NetBSD/lib/libc/arch/pc532/sys/sbrk.S

44 lines
1.1 KiB
ArmAsm

/*
* Copyright (c) 1992 Helsinki University of Technology
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* HELSINKI UNIVERSITY OF TECHNOLOGY ALLOWS FREE USE OF THIS SOFTWARE IN
* ITS "AS IS" CONDITION. HELSINKI UNIVERSITY OF TECHNOLOGY DISCLAIMS ANY
* LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE
* USE OF THIS SOFTWARE.
*/
/*
* HISTORY
* 29-Apr-92 Johannes Helander (jvh) at Helsinki University of Technology
* Created.
*
* $Id: sbrk.S,v 1.1 1993/10/07 00:21:01 cgd Exp $
*/
#include <sys/syscall.h>
#include "SYS.h"
.globl _end
.globl _curbrk
.globl _minbrk
.data
_curbrk: .long _end
_minbrk: .long _end
.text
ENTRY(sbrk)
addd _curbrk(pc), S_ARG0
movd SYS_break,r0
SVC
bcs cerror
movd _curbrk(pc), r0
movd S_ARG0,_curbrk(pc) /* XXX check this b*/
ret 0