1/* $OpenBSD: sigcode.S,v 1.4 2016/05/23 20:11:49 deraadt Exp $ */ 2/* $NetBSD: sigcode.S,v 1.6 2003/10/05 19:44:58 matt Exp $ */ 3 4/* 5 * Copyright (C) 1994-1997 Mark Brinicombe 6 * Copyright (C) 1994 Brini 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by Brini. 20 * 4. The name of Brini may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL BRINI BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 28 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 29 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 31 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 32 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35#include <machine/asm.h> 36 37#include "assym.h" 38#include <sys/syscall.h> 39 40/* 41 * Signal trampoline; 42 */ 43 44 .section .rodata 45 .align 0 46 .globl sigcode 47 .type x,_ASM_TYPE_FUNCTION 48sigcode: 49/* 50 * The kernel arranges for the handler to be invoked directly. This 51 * trampoline is used only to return from the signal. 52 * 53 * The stack pointer points to the saved sigcontext. 54 */ 55/* mov r0, sp */ 56 add r0, sp, #SIGF_SC 57 ldr r12, =SYS_sigreturn 58 swi SYS_sigreturn 59 .globl _C_LABEL(sigcoderet) 60_C_LABEL(sigcoderet): 61 62/* Well if that failed we better exit quick ! */ 63 64 swi SYS_exit 65 b . - 8 66 67 .align 0 68 .global _C_LABEL(esigcode) 69_C_LABEL(esigcode): 70 71 .globl sigfill 72sigfill: 73 .word 0xa000f7f0 /* illegal on all cpus? */ 74esigfill: 75 76 .data 77 .globl sigfillsiz 78sigfillsiz: 79 .word esigfill - sigfill 80 81 .text 82