1/* $NetBSD: netbsd32_sigcode.S,v 1.7 2008/04/28 20:23:12 martin Exp $ */ 2 3/*- 4 * Copyright (c) 1998, 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#include "assym.h" 33#include <machine/asm.h> 34#include <sys/syscall.h> 35 36/* 37 * Signal trampoline for 1.6 compatibility; copied to top of user stack. 38 */ 39 40NENTRY(netbsd32_sigcode) 41 42 .code32 43 /* 44 * Handler has returned here as if we called it. The sigcontext 45 * is on the stack after the 3 args "we" pushed. 46 */ 47 leal 12(%esp),%eax # get pointer to sigcontext 48 movl %eax,4(%esp) # put it in the argument slot 49 # fake return address already there 50 movl $SYS_compat_16___sigreturn14,%eax 51 int $0x80 # enter kernel with args on stack 52 movl $SYS_exit,%eax 53 int $0x80 # exit if sigreturn fails 54 .globl _C_LABEL(netbsd32_esigcode) 55_C_LABEL(netbsd32_esigcode): 56 57/* 58 * There is no NetBSD-1.6 compatibility for native code. 59 * COMPAT_16 is useful for i386 emulation (COMPAT_NETBSD32) only. 60 */ 61 .globl _C_LABEL(sigcode), _C_LABEL(esigcode) 62 .set _C_LABEL(sigcode),0 63 .set _C_LABEL(esigcode),0 64