getcontext.S revision 1.5
1 1.5 chris /* $NetBSD: getcontext.S,v 1.5 2008/03/30 21:22:05 chris Exp $ */ 2 1.2 thorpej 3 1.2 thorpej /*- 4 1.2 thorpej * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 1.2 thorpej * All rights reserved. 6 1.2 thorpej * 7 1.2 thorpej * This code is derived from software contributed to The NetBSD Foundation 8 1.2 thorpej * by Klaus Klein. 9 1.2 thorpej * 10 1.2 thorpej * Redistribution and use in source and binary forms, with or without 11 1.2 thorpej * modification, are permitted provided that the following conditions 12 1.2 thorpej * are met: 13 1.2 thorpej * 1. Redistributions of source code must retain the above copyright 14 1.2 thorpej * notice, this list of conditions and the following disclaimer. 15 1.2 thorpej * 2. Redistributions in binary form must reproduce the above copyright 16 1.2 thorpej * notice, this list of conditions and the following disclaimer in the 17 1.2 thorpej * documentation and/or other materials provided with the distribution. 18 1.2 thorpej * 3. All advertising materials mentioning features or use of this software 19 1.2 thorpej * must display the following acknowledgement: 20 1.2 thorpej * This product includes software developed by the NetBSD 21 1.2 thorpej * Foundation, Inc. and its contributors. 22 1.2 thorpej * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.2 thorpej * contributors may be used to endorse or promote products derived 24 1.2 thorpej * from this software without specific prior written permission. 25 1.2 thorpej * 26 1.2 thorpej * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.2 thorpej * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.2 thorpej * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.2 thorpej * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.2 thorpej * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.2 thorpej * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.2 thorpej * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.2 thorpej * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.2 thorpej * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.2 thorpej * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.2 thorpej * POSSIBILITY OF SUCH DAMAGE. 37 1.2 thorpej */ 38 1.2 thorpej 39 1.2 thorpej #include "SYS.h" 40 1.2 thorpej 41 1.2 thorpej #if defined(SYSLIBC_SCCS) && !defined(lint) 42 1.5 chris RCSID("$NetBSD: getcontext.S,v 1.5 2008/03/30 21:22:05 chris Exp $") 43 1.2 thorpej #endif /* SYSLIBC_SCCS && !lint */ 44 1.2 thorpej 45 1.2 thorpej #ifdef WEAK_ALIAS 46 1.2 thorpej WEAK_ALIAS(getcontext, _getcontext) 47 1.2 thorpej #endif 48 1.2 thorpej 49 1.2 thorpej ENTRY(_getcontext) 50 1.2 thorpej mov r2, r0 /* Must save argument pointer. */ 51 1.5 chris SYSTRAP (getcontext) 52 1.2 thorpej bcs PIC_SYM(CERROR, PLT) 53 1.2 thorpej str lr, [r2, #(36 + 15*4)] /* Adjust PC. */ 54 1.2 thorpej #ifdef SOFTFLOAT 55 1.2 thorpej /* Ahem. */ 56 1.2 thorpej /* Judging from the softfloat code we should at least save 57 1.2 thorpej the exception codes and rounding mode here. */ 58 1.2 thorpej #endif 59 1.2 thorpej mov r0, #0 60 1.2 thorpej str r0, [r2, #(36 + 0*4)] /* Return 0. */ 61 1.4 rearnsha RET 62
Indexes created Wed Sep 24 05:09:52 GMT 2025