1/* $NetBSD: sigcode.S,v 1.3 2002/06/23 19:16:43 thorpej Exp $ */ 2 3/* 4 * Copyright (C) 1994-1997 Mark Brinicombe 5 * Copyright (C) 1994 Brini 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 Brini. 19 * 4. The name of Brini 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 BRINI ``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 BRINI 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 36RCSID("$NetBSD: sigcode.S,v 1.3 2002/06/23 19:16:43 thorpej Exp $") 37 38#include "assym.h" 39#include <sys/syscall.h> 40 41/* 42 * Signal trampoline; copied to top of user stack. 43 */ 44 45ENTRY_NP(sigcode) 46/* 47 * The kernel arranges for the handler to be invoked directly. This 48 * trampoline is used only to return from the signal. 49 * 50 * The stack pointer points to the saved sigcontext. 51 */ 52 mov r0, sp 53 swi SYS___sigreturn14 54 55/* Well if that failed we better exit quick ! */ 56 57 swi SYS_exit 58 b . - 8 59 60 .align 0 61 .global _C_LABEL(esigcode) 62_C_LABEL(esigcode): 63