77 lines
2.2 KiB
ArmAsm
77 lines
2.2 KiB
ArmAsm
|
/* $NetBSD: sbrk.S,v 1.4 2009/11/03 05:07:25 snj Exp $ */
|
||
|
|
|
||
|
|
/* $OpenBSD: sbrk.S,v 1.7 2001/06/04 23:14:04 mickey Exp $ */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Copyright (c) 1999 Michael Shalayeff
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||
|
|
* IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
|
||
|
|
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||
|
|
* SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
||
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
|
||
|
|
* THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "SYS.h"
|
||
|
|
|
||
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
||
|
|
RCSID("$NetBSD: sbrk.S,v 1.4 2009/11/03 05:07:25 snj Exp $")
|
||
|
|
#endif /* LIBC_SCCS and not lint */
|
||
|
|
|
||
|
|
.import end, data
|
||
|
|
|
||
|
|
#ifdef WEAK_ALIAS
|
||
|
|
WEAK_ALIAS(sbrk, _sbrk)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
.data
|
||
|
|
.export curbrk, data
|
||
|
|
curbrk:
|
||
|
|
.long end
|
||
|
|
|
||
|
|
ENTRY(_sbrk,0)
|
||
|
|
#ifdef PIC
|
||
|
|
addil LT%curbrk, %r19
|
||
|
|
ldw RT%curbrk(%r1), %r1
|
||
|
|
ldw 0(%r1), %t2
|
||
|
|
#else /* !PIC */
|
||
|
|
ldil L%curbrk, %t1
|
||
|
|
ldw R%curbrk(%t1), %t2
|
||
|
|
#endif /* !PIC */
|
||
|
|
add %arg0, %t2, %arg0
|
||
|
|
stw %arg0, HPPA_FRAME_ARG(0)(%sp)
|
||
|
|
|
||
|
|
SYSCALL(break)
|
||
|
|
|
||
|
|
#ifdef PIC
|
||
|
|
addil LT%curbrk, %r19
|
||
|
|
ldw RT%curbrk(%r1), %r1
|
||
|
|
#else /* !PIC */
|
||
|
|
ldil L%curbrk, %t1
|
||
|
|
ldo R%curbrk(%t1), %r1
|
||
|
|
#endif /* !PIC */
|
||
|
|
ldw 0(%r1), %ret0
|
||
|
|
ldw HPPA_FRAME_ARG(0)(%sp), %arg0
|
||
|
|
bv %r0(%rp)
|
||
|
|
stw %arg0, 0(%r1)
|
||
|
|
|
||
|
|
EXIT(sbrk)
|
||
|
|
|
||
|
|
.end
|