getcontext.S revision 1.1.2.1
1 1.1.2.1 martin /* $NetBSD: getcontext.S,v 1.1.2.1 2001/11/17 12:25:31 martin Exp $ */ 2 1.1.2.1 martin 3 1.1.2.1 martin /*- 4 1.1.2.1 martin * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 1.1.2.1 martin * All rights reserved. 6 1.1.2.1 martin * 7 1.1.2.1 martin * This code is derived from software contributed to The NetBSD Foundation 8 1.1.2.1 martin * by Klaus Klein. 9 1.1.2.1 martin * 10 1.1.2.1 martin * Redistribution and use in source and binary forms, with or without 11 1.1.2.1 martin * modification, are permitted provided that the following conditions 12 1.1.2.1 martin * are met: 13 1.1.2.1 martin * 1. Redistributions of source code must retain the above copyright 14 1.1.2.1 martin * notice, this list of conditions and the following disclaimer. 15 1.1.2.1 martin * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.2.1 martin * notice, this list of conditions and the following disclaimer in the 17 1.1.2.1 martin * documentation and/or other materials provided with the distribution. 18 1.1.2.1 martin * 3. All advertising materials mentioning features or use of this software 19 1.1.2.1 martin * must display the following acknowledgement: 20 1.1.2.1 martin * This product includes software developed by the NetBSD 21 1.1.2.1 martin * Foundation, Inc. and its contributors. 22 1.1.2.1 martin * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.1.2.1 martin * contributors may be used to endorse or promote products derived 24 1.1.2.1 martin * from this software without specific prior written permission. 25 1.1.2.1 martin * 26 1.1.2.1 martin * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.1.2.1 martin * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.1.2.1 martin * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.1.2.1 martin * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.1.2.1 martin * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.1.2.1 martin * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.1.2.1 martin * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.1.2.1 martin * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.1.2.1 martin * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.1.2.1 martin * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.1.2.1 martin * POSSIBILITY OF SUCH DAMAGE. 37 1.1.2.1 martin */ 38 1.1.2.1 martin 39 1.1.2.1 martin #include "SYS.h" 40 1.1.2.1 martin 41 1.1.2.1 martin #if defined(SYSLIBC_SCCS) && !defined(lint) 42 1.1.2.1 martin RCSID("$NetBSD: getcontext.S,v 1.1.2.1 2001/11/17 12:25:31 martin Exp $") 43 1.1.2.1 martin #endif /* SYSLIBC_SCCS && !lint */ 44 1.1.2.1 martin 45 1.1.2.1 martin #ifdef WEAK_ALIAS 46 1.1.2.1 martin WEAK_ALIAS(getcontext, _getcontext) 47 1.1.2.1 martin #endif 48 1.1.2.1 martin 49 1.1.2.1 martin ENTRY(_getcontext) 50 1.1.2.1 martin mov %o0, %o2 /* must save pointer */ 51 1.1.2.1 martin mov SYS_getcontext, %g1 52 1.1.2.1 martin t ST_SYSCALL 53 1.1.2.1 martin bcc,a 1f 54 1.1.2.1 martin stx %g0, [%o2 + 64 + 11 * 8] /* gr[_REG_O0] = 0 */ 55 1.1.2.1 martin ERROR() 56 1.1.2.1 martin 1: 57 1.1.2.1 martin add %o7, 8, %o1 58 1.1.2.1 martin stx %o1, [%o2 + 64 + 1 * 8] /* gr[_REG_PC] = retaddr */ 59 1.1.2.1 martin add %o7, 12, %o1 60 1.1.2.1 martin retl 61 1.1.2.1 martin stx %o1, [%o2 + 64 + 2 * 8] /* gr[_REG_nPC] = retaddr + 4 */ 62
Indexes created Wed Oct 01 07:09:59 GMT 2025