/* $NetBSD: getcontext.S,v 1.3 2003/03/24 14:29:35 scw Exp $ */ /* * Copyright 2003 Wasabi Systems, Inc. * All rights reserved. * * Written by Steve C. Woodford for Wasabi Systems, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed for the NetBSD Project by * Wasabi Systems, Inc. * 4. The name of Wasabi Systems, Inc. may not be used to endorse * or promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include "SYS.h" #if defined(SYSLIBC_SCCS) && !defined(lint) RCSID("$NetBSD: getcontext.S,v 1.3 2003/03/24 14:29:35 scw Exp $") #endif /* SYSLIBC_SCCS && !lint */ #ifdef WEAK_ALIAS WEAK_ALIAS(getcontext, _getcontext) #endif ENTRY(_getcontext) or r2, r63, r3 /* Preserve ucp in r3 across syscall */ or r18, r63, r4 /* Preserve return address similarly */ SYSTRAP(getcontext) pta/u 1f, tr0 bne/u r0, r63, tr0 ptabs/l r4, tr0 st.q r3, 72, r63 /* Arrange for return value of 0 */ st.q r3, 40, r4 /* Adjust saved program counter */ blink tr0, r63 1: PIC_PROLOGUE PIC_PTAL(_C_LABEL(__cerror), r0, tr0) blink tr0, r63