sbrk.S revision 1.6
1 1.6 joerg /* $NetBSD: sbrk.S,v 1.6 2013/09/12 15:36:15 joerg Exp $ */ 2 1.1 fredette 3 1.1 fredette /* $OpenBSD: sbrk.S,v 1.7 2001/06/04 23:14:04 mickey Exp $ */ 4 1.1 fredette 5 1.1 fredette /* 6 1.1 fredette * Copyright (c) 1999 Michael Shalayeff 7 1.1 fredette * All rights reserved. 8 1.1 fredette * 9 1.1 fredette * Redistribution and use in source and binary forms, with or without 10 1.1 fredette * modification, are permitted provided that the following conditions 11 1.1 fredette * are met: 12 1.1 fredette * 1. Redistributions of source code must retain the above copyright 13 1.1 fredette * notice, this list of conditions and the following disclaimer. 14 1.1 fredette * 2. Redistributions in binary form must reproduce the above copyright 15 1.1 fredette * notice, this list of conditions and the following disclaimer in the 16 1.1 fredette * documentation and/or other materials provided with the distribution. 17 1.1 fredette * 18 1.1 fredette * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 1.1 fredette * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 1.1 fredette * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 1.1 fredette * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT, 22 1.1 fredette * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 23 1.1 fredette * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 24 1.1 fredette * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 1.1 fredette * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 26 1.1 fredette * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 27 1.1 fredette * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 28 1.1 fredette * THE POSSIBILITY OF SUCH DAMAGE. 29 1.1 fredette */ 30 1.1 fredette 31 1.1 fredette #include "SYS.h" 32 1.1 fredette 33 1.1 fredette #if defined(LIBC_SCCS) && !defined(lint) 34 1.6 joerg RCSID("$NetBSD: sbrk.S,v 1.6 2013/09/12 15:36:15 joerg Exp $") 35 1.1 fredette #endif /* LIBC_SCCS and not lint */ 36 1.1 fredette 37 1.5 skrll .global _end 38 1.1 fredette 39 1.1 fredette #ifdef WEAK_ALIAS 40 1.1 fredette WEAK_ALIAS(sbrk, _sbrk) 41 1.1 fredette #endif 42 1.1 fredette 43 1.1 fredette .data 44 1.1 fredette .export curbrk, data 45 1.3 matt curbrk: 46 1.5 skrll .long _end 47 1.1 fredette 48 1.1 fredette ENTRY(_sbrk,0) 49 1.6 joerg #ifdef __PIC__ 50 1.2 fredette addil LT%curbrk, %r19 51 1.2 fredette ldw RT%curbrk(%r1), %r1 52 1.3 matt ldw 0(%r1), %t2 53 1.6 joerg #else /* !__PIC__ */ 54 1.3 matt ldil L%curbrk, %t1 55 1.3 matt ldw R%curbrk(%t1), %t2 56 1.6 joerg #endif /* !__PIC__ */ 57 1.3 matt add %arg0, %t2, %arg0 58 1.3 matt stw %arg0, HPPA_FRAME_ARG(0)(%sp) 59 1.1 fredette 60 1.1 fredette SYSCALL(break) 61 1.1 fredette 62 1.6 joerg #ifdef __PIC__ 63 1.2 fredette addil LT%curbrk, %r19 64 1.2 fredette ldw RT%curbrk(%r1), %r1 65 1.6 joerg #else /* !__PIC__ */ 66 1.3 matt ldil L%curbrk, %t1 67 1.3 matt ldo R%curbrk(%t1), %r1 68 1.6 joerg #endif /* !__PIC__ */ 69 1.3 matt ldw 0(%r1), %ret0 70 1.3 matt ldw HPPA_FRAME_ARG(0)(%sp), %arg0 71 1.3 matt bv %r0(%rp) 72 1.3 matt stw %arg0, 0(%r1) 73 1.1 fredette 74 1.1 fredette EXIT(sbrk) 75 1.1 fredette 76 1.1 fredette .end 77
Indexes created Sat Sep 27 22:09:54 GMT 2025