1/* $OpenBSD: brk.S,v 1.18 2016/05/30 05:18:52 guenther Exp $ */ 2 3/* 4 * Copyright (c) 1999 Michael Shalayeff 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 25 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 26 * THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#include "SYS.h" 30 31 .import __curbrk, data 32 .import _end, data 33 34 .data 35 .export __minbrk, data 36__minbrk 37 .long _end 38 39 .weak brk 40 41LEAF_ENTRY(brk) 42#ifdef __PIC__ 43 addil LT%__minbrk, r19 44 ldw RT%__minbrk(r1), t1 45 ldw 0(t1), t2 46#else 47 ldil L%__minbrk, t1 48 ldw R%__minbrk(t1), t2 49#endif 50 sub,<< t2, arg0, r0 51 copy t2, arg0 52 stw arg0, HPPA_FRAME_ARG(0)(sp) 53 54 SYSCALL(break) 55 56 ldw HPPA_FRAME_ARG(0)(sp), arg0 57#ifdef __PIC__ 58 addil LT%__curbrk, r19 59 ldw RT%__curbrk(r1), t1 60 bv r0(rp) 61 stw arg0, 0(t1) 62#else 63 ldil L%__curbrk, t1 64 bv r0(rp) 65 stw arg0, R%__curbrk(t1) 66#endif 67EXIT(brk) 68 69 .end 70 71