1*0a6a1f1dSLionel Sambuc/* $NetBSD: getcontext.S,v 1.4 2014/05/23 02:34:19 uebayasi Exp $ */ 22fe8fb19SBen Gras 32fe8fb19SBen Gras/*- 42fe8fb19SBen Gras * Copyright (c) 1999 The NetBSD Foundation, Inc. 52fe8fb19SBen Gras * All rights reserved. 62fe8fb19SBen Gras * 72fe8fb19SBen Gras * This code is derived from software contributed to The NetBSD Foundation 82fe8fb19SBen Gras * by Klaus Klein. 92fe8fb19SBen Gras * 102fe8fb19SBen Gras * Redistribution and use in source and binary forms, with or without 112fe8fb19SBen Gras * modification, are permitted provided that the following conditions 122fe8fb19SBen Gras * are met: 132fe8fb19SBen Gras * 1. Redistributions of source code must retain the above copyright 142fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer. 152fe8fb19SBen Gras * 2. Redistributions in binary form must reproduce the above copyright 162fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer in the 172fe8fb19SBen Gras * documentation and/or other materials provided with the distribution. 182fe8fb19SBen Gras * 192fe8fb19SBen Gras * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 202fe8fb19SBen Gras * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 212fe8fb19SBen Gras * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 222fe8fb19SBen Gras * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 232fe8fb19SBen Gras * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 242fe8fb19SBen Gras * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 252fe8fb19SBen Gras * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 262fe8fb19SBen Gras * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 272fe8fb19SBen Gras * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 282fe8fb19SBen Gras * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 292fe8fb19SBen Gras * POSSIBILITY OF SUCH DAMAGE. 302fe8fb19SBen Gras */ 312fe8fb19SBen Gras 322fe8fb19SBen Gras#include "SYS.h" 332fe8fb19SBen Gras 342fe8fb19SBen Gras#if defined(SYSLIBC_SCCS) && !defined(lint) 35*0a6a1f1dSLionel Sambuc RCSID("$NetBSD: getcontext.S,v 1.4 2014/05/23 02:34:19 uebayasi Exp $") 362fe8fb19SBen Gras#endif /* SYSLIBC_SCCS && !lint */ 372fe8fb19SBen Gras 382fe8fb19SBen Gras#ifdef WEAK_ALIAS 392fe8fb19SBen GrasWEAK_ALIAS(getcontext, _getcontext) 402fe8fb19SBen Gras#endif 412fe8fb19SBen Gras 422fe8fb19SBen Gras_SYSCALL(_getcontext,getcontext) 432fe8fb19SBen Gras movl 4(%esp),%ecx 442fe8fb19SBen Gras movl 0(%esp),%edx 452fe8fb19SBen Gras movl %edx,(36 + 14 * 4)(%ecx) /* Adjust saved %eip ... */ 462fe8fb19SBen Gras leal 4(%esp),%edx 472fe8fb19SBen Gras movl %edx,(36 + 17 * 4)(%ecx) /* ... and %esp. */ 482fe8fb19SBen Gras movl $0,(36 + 11 * 4)(%ecx) /* Arrange for return of 0. */ 492fe8fb19SBen Gras xorl %eax,%eax 502fe8fb19SBen Gras ret 51*0a6a1f1dSLionel SambucEND(_getcontext) 52