sbrk.S revision 1.3
11.1Sragge/* 21.1Sragge * Copyright (c) 1983, 1993 31.1Sragge * The Regents of the University of California. All rights reserved. 41.1Sragge * 51.1Sragge * Redistribution and use in source and binary forms, with or without 61.1Sragge * modification, are permitted provided that the following conditions 71.1Sragge * are met: 81.1Sragge * 1. Redistributions of source code must retain the above copyright 91.1Sragge * notice, this list of conditions and the following disclaimer. 101.1Sragge * 2. Redistributions in binary form must reproduce the above copyright 111.1Sragge * notice, this list of conditions and the following disclaimer in the 121.1Sragge * documentation and/or other materials provided with the distribution. 131.1Sragge * 3. All advertising materials mentioning features or use of this software 141.1Sragge * must display the following acknowledgement: 151.1Sragge * This product includes software developed by the University of 161.1Sragge * California, Berkeley and its contributors. 171.1Sragge * 4. Neither the name of the University nor the names of its contributors 181.1Sragge * may be used to endorse or promote products derived from this software 191.1Sragge * without specific prior written permission. 201.1Sragge * 211.1Sragge * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221.1Sragge * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231.1Sragge * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241.1Sragge * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251.1Sragge * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261.1Sragge * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271.1Sragge * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281.1Sragge * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291.1Sragge * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301.1Sragge * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311.1Sragge * SUCH DAMAGE. 321.1Sragge */ 331.1Sragge 341.1Sragge#if defined(SYSLIBC_SCCS) && !defined(lint) 351.1Sragge /* .asciz "@(#)sbrk.s 8.1 (Berkeley) 6/4/93" */ 361.3Skleink .asciz "$NetBSD: sbrk.S,v 1.3 1999/01/14 22:48:22 kleink Exp $" 371.1Sragge#endif /* SYSLIBC_SCCS and not lint */ 381.1Sragge 391.1Sragge#include "SYS.h" 401.1Sragge 411.1Sragge 421.1Sragge .globl _end 431.3Skleink .globl ___minbrk 441.1Sragge .globl curbrk 451.1Sragge 461.1Sragge .data 471.3Skleink___minbrk: 481.3Skleink .long _end 491.1Sraggecurbrk: .long _end 501.1Sragge .text 511.1Sragge 521.2SraggeENTRY(sbrk, 0) 531.1Sragge addl3 curbrk,4(ap),-(sp) 541.1Sragge pushl $1 551.1Sragge movl ap,r3 561.1Sragge movl sp,ap 571.1Sragge chmk $ SYS_break 581.1Sragge jcs err 591.1Sragge movl curbrk,r0 601.1Sragge addl2 4(r3),curbrk 611.1Sragge ret 621.1Sraggeerr: 631.1Sragge jmp cerror 64