/*
 * Copyright (c) 1983, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * 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.
 */

/*
 * C library -- setjmp, longjmp
 *
 *      longjmp(a,v)
 * will generate a "return(v)" from
 * the last call to
 *      setjmp(a)
 * by restoring registers from the stack,
 * and a struct sigcontext, see <signal.h>
 */

#include "DEFS.h"
#include "assym.h"

#if defined(LIBC_SCCS) && !defined(lint)
        /* .asciz "@(#)setjmp.s 8.1 (Berkeley) 6/4/93" */
RCSID("$NetBSD: __setjmp14.S,v 1.11 2011/01/25 02:38:15 matt Exp $")
#endif /* LIBC_SCCS and not lint */

ENTRY(__setjmp14, R6)
        movl    4(%ap),%r2              # construct sigcontext
        subl2   $12,%sp                 # space for current struct sigstack
        pushl   %sp                     # get current values
        pushl   $0                      # no new values
        calls   $4,_C_LABEL(__sigaltstack14) # pop args plus signal stack value
        movl    4(%ap),%r2              # construct sigcontext
        movl    (%sp)+,(%r2)            # save onsigstack status of caller
        pushal  28(%r2)
        pushl   $0
        pushl   $0
        calls   $3,_C_LABEL(__sigprocmask14) # get signal mask
        addl3   $8,4(%ap),%r2           # point to sp in signal context
        clrl    %r0                     # assume no stack arguments
        bbc     $13,6(%fp),1f           # handle callg
        addl3   $1,(%ap),%r0            # get argument count +1 if calls
1:      moval   24(%fp)[%r0],(%r2)+     # save sp of caller
        movl    12(%fp),(%r2)+          # save frame pointer of caller
        movl    8(%fp),(%r2)+           # save argument pointer of caller
        movl    16(%fp),(%r2)+          # save pc of caller
        movpsl  (%r2)                   # save current psl
        movw    4(%fp),(%r2)            # save psw of caller
        addl3   $SC_LEN,4(%ap),%r2      # point to past signal context
        movq    %r6,(%r2)+              # save r6/r7
        movq    %r8,(%r2)+              # save r8/r9
        movq    %r10,(%r2)+             # save r10/r11
        clrl    %r0
        ret
END(__setjmp14)