1/* $NetBSD: sigcode.s,v 1.10 2000/11/26 11:47:25 jdolecek Exp $ */ 2 3/* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1980, 1990, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * from: Utah $Hdr: locore.s 1.66 92/12/22$ 41 * 42 * @(#)locore.s 8.6 (Berkeley) 5/27/94 43 */ 44 45/* 46 * NOTICE: This is not a standalone file. To use it, #include it in 47 * your port's locore.s, like so: 48 * 49 * #include <m68k/m68k/sigcode.s> 50 */ 51 52/* 53 * Signal "trampoline" code (18 bytes). Invoked from RTE setup by sendsig(). 54 * 55 * Stack looks like: 56 * 57 * sp+0 -> signal number 58 * sp+4 signal specific code 59 * sp+8 pointer to signal context frame (scp) 60 * sp+12 address of handler 61 * sp+16 saved hardware state 62 * . 63 * . 64 * . 65 * scp+0 -> beginning of signal context frame 66 */ 67 68 .data 69 .align 2 70GLOBAL(sigcode) 71 movl %sp@(12),%a0 | signal handler addr (4 bytes) 72 jsr %a0@ | call signal handler (2 bytes) 73 addql #4,%sp | pop signal number (2 bytes) 74 trap #3 | special sigreturn trap (2 bytes) 75 movl %d0,%sp@(4) | save errno (4 bytes) 76 moveq #SYS_exit,%d0 | syscall == exit (2 bytes) 77 trap #0 | exit(errno) (2 bytes) 78 .align 2 79GLOBAL(esigcode) 80