1/* $NetBSD: netbsd32_sigcode.S,v 1.9 2018/07/14 14:29:40 maxv 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 .code32 40ENTRY(netbsd32_sigcode) 41 /* 42 * Handler has returned here as if we called it. The sigcontext 43 * is on the stack after the 3 args "we" pushed. 44 */ 45 leal 12(%esp),%eax /* get pointer to sigcontext */ 46 movl %eax,4(%esp) /* put it in the argument slot */ 47 /* fake return address already there */ 48 movl $SYS_compat_16___sigreturn14,%eax 49 int $0x80 /* enter kernel with args on stack */ 50 movl $SYS_exit,%eax 51 int $0x80 /* exit if sigreturn fails */ 52 .globl _C_LABEL(netbsd32_esigcode) 53_C_LABEL(netbsd32_esigcode): 54END(netbsd32_sigcode) 55 56/* 57 * There is no NetBSD-1.6 compatibility for native code. 58 * COMPAT_16 is useful for i386 emulation (COMPAT_NETBSD32) only. 59 */ 60 .globl _C_LABEL(sigcode), _C_LABEL(esigcode) 61 .set _C_LABEL(sigcode),0 62 .set _C_LABEL(esigcode),0 63