1/* $NetBSD: __sigtramp3.S,v 1.2 2011/01/25 02:38:15 matt Exp $ */ 2 3/* 4 * Copyright (c) 2003 Matt Thomas <matt@3am-software.com> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30/* 31 * Signal trampoline; registers when called: 32 * pc, psl - obvious 33 * sp, ap - points to argument list 34 * 4(ap) -- signo 35 * 8(ap) -- pointer to siginfo 36 * 12(ap) -- pointer to ucontext 37 * fp - address of signal handler 38 */ 39 40#include "SYS.h" 41 42#ifdef SYSLIBC_SCCS 43RCSID("$NetBSD: __sigtramp3.S,v 1.2 2011/01/25 02:38:15 matt Exp $") 44#endif 45 46 .text 47 _ALIGN_TEXT 48 49 .globl _C_LABEL(__sigtramp_siginfo_3) 50_C_LABEL(__sigtramp_siginfo_3): 51 nop; nop 52 callg (%ap),(%fp) # use global arg list 53 addl2 $8,%ap # arg is pointer to ucontext 54 SYSTRAP(setcontext) # exit from here 55 halt # illegal insn 56