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/*
* Copyright (c) 1980, 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.
*/
#include "DEFS.h"
#if defined(LIBC_SCCS) && !defined(lint)
/* .asciz "@(#)_setjmp.s 8.1 (Berkeley) 6/4/93" */
RCSID("$NetBSD: _setjmp.S,v 1.10 2011/01/25 02:38:15 matt Exp $")
#endif /* LIBC_SCCS and not lint */
/*
* 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,
* The previous signal state is NOT restored.
*
* Even though we don't use sigreturn14, we still store things in a sigcontext
* in order to be consistent.
*/
ENTRY(_setjmp, R6)
movl 4(%ap),%r0
movl 12(%fp),12(%r0) # save frame pointer of caller
movl 16(%fp),20(%r0) # save pc of caller
movl 8(%fp),16(%r0) # save ap of caller
clrl %r1 # clear arg count
bbc $13,6(%fp),1f # was this a callg?
addl3 $1,(%ap),%r1 # get real arg count+1 for calls
1: moval 24(%fp)[%r1],8(%r0) # save sp of caller
movpsl 24(%r0) # save current psl
movw 4(%fp),24(%r0) # save psw of caller
movq %r6,44(%r0) # save r6/r7
movq %r8,52(%r0) # save r8/r9
movq %r10,60(%r0) # save r10/r11
clrl %r0
ret
END(_setjmp)
ENTRY(_longjmp, 0)
movl 8(%ap),%r0 # return(v)
movl 4(%ap),%r1 # fetch buffer
tstl 12(%r1) # is fp null
beql botch
movq 44(%r1),%r6 # restore r6/r7
movq 52(%r1),%r8 # restore r8/r9
movq 60(%r1),%r10 # restore r10/r11
movl 16(%r1),%ap # restore ap
movl 8(%r1),%sp # restore sp
movl 12(%r1),%fp # restore fp
movq 20(%r1),-(%sp) # save pc/psl to new stack
rei # and go back to saved pc/psl
botch:
calls $0,_C_LABEL(longjmperror)
halt
END(_longjmp)
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