1ce0bb6e8Sragge/* 2ce0bb6e8Sragge * Copyright (c) 1983, 1993 3ce0bb6e8Sragge * The Regents of the University of California. All rights reserved. 4ce0bb6e8Sragge * 5ce0bb6e8Sragge * Redistribution and use in source and binary forms, with or without 6ce0bb6e8Sragge * modification, are permitted provided that the following conditions 7ce0bb6e8Sragge * are met: 8ce0bb6e8Sragge * 1. Redistributions of source code must retain the above copyright 9ce0bb6e8Sragge * notice, this list of conditions and the following disclaimer. 10ce0bb6e8Sragge * 2. Redistributions in binary form must reproduce the above copyright 11ce0bb6e8Sragge * notice, this list of conditions and the following disclaimer in the 12ce0bb6e8Sragge * documentation and/or other materials provided with the distribution. 13eb7c1594Sagc * 3. Neither the name of the University nor the names of its contributors 14ce0bb6e8Sragge * may be used to endorse or promote products derived from this software 15ce0bb6e8Sragge * without specific prior written permission. 16ce0bb6e8Sragge * 17ce0bb6e8Sragge * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18ce0bb6e8Sragge * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19ce0bb6e8Sragge * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20ce0bb6e8Sragge * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21ce0bb6e8Sragge * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22ce0bb6e8Sragge * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23ce0bb6e8Sragge * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24ce0bb6e8Sragge * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25ce0bb6e8Sragge * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26ce0bb6e8Sragge * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27ce0bb6e8Sragge * SUCH DAMAGE. 28ce0bb6e8Sragge */ 29ce0bb6e8Sragge 30787e823fSmatt#include "SYS.h" 31787e823fSmatt 32ce0bb6e8Sragge#if defined(SYSLIBC_SCCS) && !defined(lint) 33ce0bb6e8Sragge /* .asciz "@(#)sbrk.s 8.1 (Berkeley) 6/4/93" */ 34*6cb10275SriastradhRCSID("$NetBSD: sbrk.S,v 1.13 2014/03/18 18:20:37 riastradh Exp $") 35ce0bb6e8Sragge#endif /* SYSLIBC_SCCS and not lint */ 36ce0bb6e8Sragge 37d493d86cSkleink .globl _end 38ae4364e1Smatt .globl _C_LABEL(__minbrk) 399bc4e223Smatt .globl _C_LABEL(__curbrk) 409bc4e223Smatt .hidden _C_LABEL(__minbrk) 419bc4e223Smatt .hidden _C_LABEL(__curbrk) 42ce0bb6e8Sragge 4303f996bdSkleink#ifdef WEAK_ALIAS 4403f996bdSkleinkWEAK_ALIAS(sbrk, _sbrk) 4503f996bdSkleink#endif 4603f996bdSkleink 47ce0bb6e8Sragge .data 48ae4364e1Smatt_C_LABEL(__minbrk): 49d493d86cSkleink .long _end 509bc4e223Smatt_C_LABEL(__curbrk): 51d493d86cSkleink .long _end 52ce0bb6e8Sragge .text 53ce0bb6e8Sragge 5403f996bdSkleinkENTRY(_sbrk, 0) 559bc4e223Smatt moval _C_LABEL(__curbrk),%r5 569bc4e223Smatt addl3 (%r5),4(%ap),-(%sp) 57ce0bb6e8Sragge pushl $1 580ce5ca14Smatt movl %ap,%r3 590ce5ca14Smatt movl %sp,%ap 60ce0bb6e8Sragge chmk $ SYS_break 61ce0bb6e8Sragge jcs err 629bc4e223Smatt movl (%r5),%r0 639bc4e223Smatt addl2 4(%r3),(%r5) 64ce0bb6e8Sragge ret 65ce0bb6e8Sraggeerr: 66c3530f0cSmatt jmp CERROR+2 67787e823fSmattEND(_sbrk) 68