/*      $NetBSD: sigcode.s,v 1.16 2024/01/17 12:33:50 thorpej Exp $     */

/*
 * Copyright (c) 1988 University of Utah.
 * Copyright (c) 1980, 1990, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * the Systems Programming Group of the University of Utah Computer
 * Science Department.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * from: Utah $Hdr: locore.s 1.66 92/12/22$
 *
 *      @(#)locore.s    8.6 (Berkeley) 5/27/94
 */

#include <machine/asm.h>

#include "assym.h"

        .file   "sigcode.s"

/*
 * Signal trampoline; copied to top of user stack.
 *
 * The handler has returned here as if we had called it.  On
 * entry, the stack looks like:
 *
 *              sigcontext structure                    [12]
 *              pointer to sigcontext structure         [8]
 *              signal specific code                    [4]
 *      sp->    signal number                           [0]
 */

        .data
        .align  2
GLOBAL(sigcode)
        leal    12(%sp),%a0     /* get pointer to sigcontext */
        movl    %a0,4(%sp)      /* put it in the argument slot */
                                /* fake return address already there */
        trap    #3              /* special sigreturn trap */
        movl    %d0,4(%sp)      /* exit with errno */
        moveq   #SYS_exit,%d0   /* if sigreturn fails */
        trap    #0

        .align  2
GLOBAL(esigcode)