1/* $NetBSD: sigcode.S,v 1.1 1999/11/17 14:56:11 kleink Exp $ */ 2 3/*- 4 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 5 * Copyright (C) 1995, 1996 TooLs GmbH. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by TooLs GmbH. 19 * 4. The name of TooLs GmbH may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34#include <machine/asm.h> 35#include <sys/syscall.h> 36#include "assym.inc" 37 38/* 39 * The following code gets copied to the top of the user stack on process 40 * execution. It does signal trampolining on signal delivery. 41 * 42 * On entry r1 points to a struct sigframe at bottom of current stack. 43 * All other registers are unchanged. 44 */ 45 .globl CNAME(sigcode32),CNAME(szsigcode32) 46CNAME(sigcode32): 47 addi 1,1,-32 /* reserved space for callee */ 48 blrl 49 addi 3,1,32+SF_UC /* restore sp, and get &frame->sf_uc */ 50 li 0,SYS_sigreturn 51 sc /* sigreturn(scp) */ 52 li 0,SYS_exit 53 sc /* exit(errno) */ 54endsigcode32: 55 56 .data 57CNAME(szsigcode32): 58 .long endsigcode32 - CNAME(sigcode32) 59