1/* $NetBSD: getcontext.S,v 1.4 2004/08/21 11:30:17 rearnsha Exp $ */ 2 3/*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Klaus Klein. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39#include "SYS.h" 40 41#if defined(SYSLIBC_SCCS) && !defined(lint) 42 RCSID("$NetBSD: getcontext.S,v 1.4 2004/08/21 11:30:17 rearnsha Exp $") 43#endif /* SYSLIBC_SCCS && !lint */ 44 45#ifdef WEAK_ALIAS 46WEAK_ALIAS(getcontext, _getcontext) 47#endif 48 49ENTRY(_getcontext) 50 mov r2, r0 /* Must save argument pointer. */ 51 swi SYS_getcontext 52 bcs PIC_SYM(CERROR, PLT) 53 str lr, [r2, #(36 + 15*4)] /* Adjust PC. */ 54#ifdef SOFTFLOAT 55 /* Ahem. */ 56 /* Judging from the softfloat code we should at least save 57 the exception codes and rounding mode here. */ 58#endif 59 mov r0, #0 60 str r0, [r2, #(36 + 0*4)] /* Return 0. */ 61 RET 62