11.1Smatt/* $NetBSD: getcontext.S,v 1.1 2014/08/10 05:47:37 matt Exp $ */ 21.1Smatt 31.1Smatt/*- 41.1Smatt * Copyright (c) 2014 The NetBSD Foundation, Inc. 51.1Smatt * All rights reserved. 61.1Smatt * 71.1Smatt * This code is derived from software contributed to The NetBSD Foundation 81.1Smatt * by Matt Thomas of 3am Software Foundry. 91.1Smatt * 101.1Smatt * Redistribution and use in source and binary forms, with or without 111.1Smatt * modification, are permitted provided that the following conditions 121.1Smatt * are met: 131.1Smatt * 1. Redistributions of source code must retain the above copyright 141.1Smatt * notice, this list of conditions and the following disclaimer. 151.1Smatt * 2. Redistributions in binary form must reproduce the above copyright 161.1Smatt * notice, this list of conditions and the following disclaimer in the 171.1Smatt * documentation and/or other materials provided with the distribution. 181.1Smatt * 191.1Smatt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 201.1Smatt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 211.1Smatt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 221.1Smatt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 231.1Smatt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 241.1Smatt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 251.1Smatt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 261.1Smatt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 271.1Smatt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 281.1Smatt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 291.1Smatt * POSSIBILITY OF SUCH DAMAGE. 301.1Smatt */ 311.1Smatt 321.1Smatt#include "SYS.h" 331.1Smatt#include "assym.h" 341.1Smatt 351.1Smatt#if defined(SYSLIBC_SCCS) && !defined(lint) 361.1Smatt RCSID("$NetBSD: getcontext.S,v 1.1 2014/08/10 05:47:37 matt Exp $") 371.1Smatt#endif /* SYSLIBC_SCCS && !lint */ 381.1Smatt 391.1SmattWEAK_ALIAS(getcontext, _getcontext) 401.1Smatt 411.1SmattENTRY(_getcontext) 421.1Smatt mov x9, x0 /* Must save argument pointer. */ 431.1Smatt SYSTRAP (getcontext) 441.1Smatt _INVOKE_CERROR() 451.1Smatt str x30, [x9, #_UC_REGS_PC] /* Adjust PC. */ 461.1Smatt#ifdef SOFTFLOAT 471.1Smatt /* Ahem. */ 481.1Smatt /* Judging from the softfloat code we should at least save 491.1Smatt the exception codes and rounding mode here. */ 501.1Smatt#endif 511.1Smatt mov x0, xzr 521.1Smatt str x0, [x9, #_UC_REGS_X0] /* Return 0. */ 531.1Smatt ret 541.1SmattEND(_getcontext) 55