getcontext.S revision 1.2
1 1.2 martin /* $NetBSD: getcontext.S,v 1.2 2008/04/28 20:22:57 martin Exp $ */ 2 1.1 kleink 3 1.1 kleink /*- 4 1.1 kleink * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 1.1 kleink * All rights reserved. 6 1.1 kleink * 7 1.1 kleink * This code is derived from software contributed to The NetBSD Foundation 8 1.1 kleink * by Klaus Klein. 9 1.1 kleink * 10 1.1 kleink * Redistribution and use in source and binary forms, with or without 11 1.1 kleink * modification, are permitted provided that the following conditions 12 1.1 kleink * are met: 13 1.1 kleink * 1. Redistributions of source code must retain the above copyright 14 1.1 kleink * notice, this list of conditions and the following disclaimer. 15 1.1 kleink * 2. Redistributions in binary form must reproduce the above copyright 16 1.1 kleink * notice, this list of conditions and the following disclaimer in the 17 1.1 kleink * documentation and/or other materials provided with the distribution. 18 1.1 kleink * 19 1.1 kleink * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.1 kleink * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.1 kleink * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.1 kleink * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.1 kleink * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.1 kleink * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.1 kleink * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.1 kleink * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.1 kleink * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.1 kleink * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.1 kleink * POSSIBILITY OF SUCH DAMAGE. 30 1.1 kleink */ 31 1.1 kleink 32 1.1 kleink #include "SYS.h" 33 1.1 kleink 34 1.1 kleink #if defined(SYSLIBC_SCCS) && !defined(lint) 35 1.2 martin RCSID("$NetBSD: getcontext.S,v 1.2 2008/04/28 20:22:57 martin Exp $") 36 1.1 kleink #endif /* SYSLIBC_SCCS && !lint */ 37 1.1 kleink 38 1.1 kleink #ifdef WEAK_ALIAS 39 1.1 kleink WEAK_ALIAS(getcontext, _getcontext) 40 1.1 kleink #endif 41 1.1 kleink 42 1.1 kleink ENTRY(_getcontext) 43 1.1 kleink mov %o0, %o2 ! must save pointer 44 1.1 kleink mov SYS_getcontext, %g1 45 1.1 kleink t ST_SYSCALL 46 1.1 kleink bcc,a 1f 47 1.1 kleink clr [%o2 + 40 + 11 * 4] ! gr[_REG_O0] = 0 48 1.1 kleink ERROR() 49 1.1 kleink 1: 50 1.1 kleink add %o7, 8, %o1 51 1.1 kleink st %o1, [%o2 + 40 + 1 * 4] ! gr[_REG_PC] = retaddr 52 1.1 kleink add %o7, 12, %o1 53 1.1 kleink retl 54 1.1 kleink st %o1, [%o2 + 40 + 2 * 4] ! gr[_REG_nPC] = retaddr + 4 55
Indexes created Mon Sep 22 05:09:51 GMT 2025