12fe8fb19SBen Gras/* 22fe8fb19SBen Gras * Copyright (c) 1983, 1993 32fe8fb19SBen Gras * The Regents of the University of California. All rights reserved. 42fe8fb19SBen Gras * 52fe8fb19SBen Gras * Redistribution and use in source and binary forms, with or without 62fe8fb19SBen Gras * modification, are permitted provided that the following conditions 72fe8fb19SBen Gras * are met: 82fe8fb19SBen Gras * 1. Redistributions of source code must retain the above copyright 92fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer. 102fe8fb19SBen Gras * 2. Redistributions in binary form must reproduce the above copyright 112fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer in the 122fe8fb19SBen Gras * documentation and/or other materials provided with the distribution. 132fe8fb19SBen Gras * 3. Neither the name of the University nor the names of its contributors 142fe8fb19SBen Gras * may be used to endorse or promote products derived from this software 152fe8fb19SBen Gras * without specific prior written permission. 162fe8fb19SBen Gras * 172fe8fb19SBen Gras * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 182fe8fb19SBen Gras * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 192fe8fb19SBen Gras * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 202fe8fb19SBen Gras * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 212fe8fb19SBen Gras * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 222fe8fb19SBen Gras * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 232fe8fb19SBen Gras * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 242fe8fb19SBen Gras * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 252fe8fb19SBen Gras * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 262fe8fb19SBen Gras * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 272fe8fb19SBen Gras * SUCH DAMAGE. 282fe8fb19SBen Gras */ 292fe8fb19SBen Gras 30e415d488SLionel Sambuc#include "SYS.h" 31e415d488SLionel Sambuc 322fe8fb19SBen Gras#if defined(SYSLIBC_SCCS) && !defined(lint) 332fe8fb19SBen Gras /* .asciz "@(#)sbrk.s 8.1 (Berkeley) 6/4/93" */ 34*0a6a1f1dSLionel SambucRCSID("$NetBSD: sbrk.S,v 1.13 2014/03/18 18:20:37 riastradh Exp $") 352fe8fb19SBen Gras#endif /* SYSLIBC_SCCS and not lint */ 362fe8fb19SBen Gras 372fe8fb19SBen Gras .globl _end 382fe8fb19SBen Gras .globl _C_LABEL(__minbrk) 3984d9c625SLionel Sambuc .globl _C_LABEL(__curbrk) 4084d9c625SLionel Sambuc .hidden _C_LABEL(__minbrk) 4184d9c625SLionel Sambuc .hidden _C_LABEL(__curbrk) 422fe8fb19SBen Gras 432fe8fb19SBen Gras#ifdef WEAK_ALIAS 442fe8fb19SBen GrasWEAK_ALIAS(sbrk, _sbrk) 452fe8fb19SBen Gras#endif 462fe8fb19SBen Gras 472fe8fb19SBen Gras .data 482fe8fb19SBen Gras_C_LABEL(__minbrk): 492fe8fb19SBen Gras .long _end 5084d9c625SLionel Sambuc_C_LABEL(__curbrk): 512fe8fb19SBen Gras .long _end 522fe8fb19SBen Gras .text 532fe8fb19SBen Gras 542fe8fb19SBen GrasENTRY(_sbrk, 0) 5584d9c625SLionel Sambuc moval _C_LABEL(__curbrk),%r5 5684d9c625SLionel Sambuc addl3 (%r5),4(%ap),-(%sp) 572fe8fb19SBen Gras pushl $1 582fe8fb19SBen Gras movl %ap,%r3 592fe8fb19SBen Gras movl %sp,%ap 602fe8fb19SBen Gras chmk $ SYS_break 612fe8fb19SBen Gras jcs err 6284d9c625SLionel Sambuc movl (%r5),%r0 6384d9c625SLionel Sambuc addl2 4(%r3),(%r5) 642fe8fb19SBen Gras ret 652fe8fb19SBen Graserr: 662fe8fb19SBen Gras jmp CERROR+2 67e415d488SLionel SambucEND(_sbrk) 68