_setjmp.s revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ident "%Z%%M% %I% %E% SMI"
#if defined(lint)
typedef long *jmp_buf_ptr;
#else /* lint */
#include <sys/asm_linkage.h>
#endif /* lint */
/*
* _setjmp(buf_ptr)
* buf_ptr points to a five word array (jmp_buf). In the first is our
* return address, the second, is the callers SP.
* The rest is cleared by _setjmp
*
* +----------------+
* %i0-> | pc |
* +----------------+
* | sp |
* +----------------+
* | sigmask |
* +----------------+
* | stagstack |
* | structure |
* +----------------+
*/
#if defined(lint)
/* ARGSUSED */
int
{ return (0); }
#else /* lint */
SPVAL = 4
SIGMASK = 8
SIGSTACK = 12
SS_ONSTACK = 4
clr [%o0 + SIGMASK] ! clear the remainder of the jmp_buf
clr [%o0 + SIGSTACK + SS_SP]
clr [%o0 + SIGSTACK + SS_ONSTACK]
retl
clr %o0
SET_SIZE(_setjmp)
#endif /* lint */
/*
* _longjmp(buf_ptr, val)
* buf_ptr points to an array which has been initialized by _setjmp.
* val is the value we wish to return to _setjmp's caller
*
*/
#if defined(lint)
/* ARGSUSED */
void
{
return;
}
#else /* lint */
!
!
1:
bnz 1b
2:
bnz 2b
#endif /* lint */