1*ffa34db7Smaxv/* $NetBSD: freebsd_sigcode.S,v 1.1 2017/08/01 14:43:54 maxv Exp $ */ 2*ffa34db7Smaxv 3*ffa34db7Smaxv/*- 4*ffa34db7Smaxv * Copyright (c) 1998 The NetBSD Foundation, Inc. 5*ffa34db7Smaxv * All rights reserved. 6*ffa34db7Smaxv * 7*ffa34db7Smaxv * This code is derived from software contributed to The NetBSD Foundation 8*ffa34db7Smaxv * by Charles M. Hannum. 9*ffa34db7Smaxv * 10*ffa34db7Smaxv * Redistribution and use in source and binary forms, with or without 11*ffa34db7Smaxv * modification, are permitted provided that the following conditions 12*ffa34db7Smaxv * are met: 13*ffa34db7Smaxv * 1. Redistributions of source code must retain the above copyright 14*ffa34db7Smaxv * notice, this list of conditions and the following disclaimer. 15*ffa34db7Smaxv * 2. Redistributions in binary form must reproduce the above copyright 16*ffa34db7Smaxv * notice, this list of conditions and the following disclaimer in the 17*ffa34db7Smaxv * documentation and/or other materials provided with the distribution. 18*ffa34db7Smaxv * 19*ffa34db7Smaxv * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20*ffa34db7Smaxv * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21*ffa34db7Smaxv * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22*ffa34db7Smaxv * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23*ffa34db7Smaxv * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24*ffa34db7Smaxv * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25*ffa34db7Smaxv * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26*ffa34db7Smaxv * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27*ffa34db7Smaxv * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28*ffa34db7Smaxv * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29*ffa34db7Smaxv * POSSIBILITY OF SUCH DAMAGE. 30*ffa34db7Smaxv */ 31*ffa34db7Smaxv 32*ffa34db7Smaxv/*- 33*ffa34db7Smaxv * Copyright (c) 1990 The Regents of the University of California. 34*ffa34db7Smaxv * All rights reserved. 35*ffa34db7Smaxv * 36*ffa34db7Smaxv * This code is derived from software contributed to Berkeley by 37*ffa34db7Smaxv * William Jolitz. 38*ffa34db7Smaxv * 39*ffa34db7Smaxv * Redistribution and use in source and binary forms, with or without 40*ffa34db7Smaxv * modification, are permitted provided that the following conditions 41*ffa34db7Smaxv * are met: 42*ffa34db7Smaxv * 1. Redistributions of source code must retain the above copyright 43*ffa34db7Smaxv * notice, this list of conditions and the following disclaimer. 44*ffa34db7Smaxv * 2. Redistributions in binary form must reproduce the above copyright 45*ffa34db7Smaxv * notice, this list of conditions and the following disclaimer in the 46*ffa34db7Smaxv * documentation and/or other materials provided with the distribution. 47*ffa34db7Smaxv * 3. Neither the name of the University nor the names of its contributors 48*ffa34db7Smaxv * may be used to endorse or promote products derived from this software 49*ffa34db7Smaxv * without specific prior written permission. 50*ffa34db7Smaxv * 51*ffa34db7Smaxv * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52*ffa34db7Smaxv * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53*ffa34db7Smaxv * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54*ffa34db7Smaxv * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55*ffa34db7Smaxv * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56*ffa34db7Smaxv * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57*ffa34db7Smaxv * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58*ffa34db7Smaxv * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59*ffa34db7Smaxv * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60*ffa34db7Smaxv * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61*ffa34db7Smaxv * SUCH DAMAGE. 62*ffa34db7Smaxv * 63*ffa34db7Smaxv * @(#)locore.s 7.3 (Berkeley) 5/13/91 64*ffa34db7Smaxv */ 65*ffa34db7Smaxv 66*ffa34db7Smaxv#include <machine/asm.h> 67*ffa34db7Smaxv__KERNEL_RCSID(0, "$NetBSD: freebsd_sigcode.S,v 1.1 2017/08/01 14:43:54 maxv Exp $"); 68*ffa34db7Smaxv 69*ffa34db7Smaxv#include "assym.h" 70*ffa34db7Smaxv 71*ffa34db7Smaxv#include <sys/errno.h> 72*ffa34db7Smaxv#include <sys/syscall.h> 73*ffa34db7Smaxv 74*ffa34db7Smaxv#include <compat/freebsd/freebsd_syscall.h> 75*ffa34db7Smaxv 76*ffa34db7Smaxv/* 77*ffa34db7Smaxv * Signal trampoline; copied to top of user stack. 78*ffa34db7Smaxv */ 79*ffa34db7Smaxv/* LINTSTUB: Var: char freebsd_sigcode[1], freebsd_esigcode[1]; */ 80*ffa34db7SmaxvNENTRY(freebsd_sigcode) 81*ffa34db7Smaxv call *FREEBSD_SIGF_HANDLER(%esp) 82*ffa34db7Smaxv leal FREEBSD_SIGF_SC(%esp),%eax # scp (the call may have clobbered 83*ffa34db7Smaxv # the copy at SIGF_SCP(%esp)) 84*ffa34db7Smaxv pushl %eax 85*ffa34db7Smaxv pushl %eax # junk to fake return address 86*ffa34db7Smaxv movl $FREEBSD_SYS_sigreturn,%eax 87*ffa34db7Smaxv int $0x80 # enter kernel with args on stack 88*ffa34db7Smaxv movl $FREEBSD_SYS_exit,%eax 89*ffa34db7Smaxv int $0x80 # exit if sigreturn fails 90*ffa34db7Smaxv .globl _C_LABEL(freebsd_esigcode) 91*ffa34db7Smaxv_C_LABEL(freebsd_esigcode): 92