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/* $OpenBSD: sigsetjmp.S,v 1.5 2016/05/09 16:33:48 guenther Exp $ */
/* $NetBSD: sigsetjmp.S,v 1.2 1996/10/17 03:08:07 cgd Exp $ */
/*
* Copyright (c) 1994, 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#include "SYS.h"
/*
* C library -- sigsetjmp, siglongjmp
*
* siglongjmp(a,v)
* will generate a "return(v)" from
* the last call to
* sigsetjmp(a, mask)
* by restoring registers from the stack.
* If `mask' is non-zero, the previous signal
* state will be restored.
*/
.set noreorder
LEAF(sigsetjmp, 2)
LDGP(pv)
stq a1, (81 * 8)(a0) /* save the mask */
bne a1, Lsavesig /* if !zero, save signals */
jmp zero, _HIDDEN(_setjmp) /* else don't. */
Lsavesig:
jmp zero, _HIDDEN(setjmp)
END_WEAK(sigsetjmp)
LEAF(siglongjmp, 2)
LDGP(pv)
ldq t0, (81 * 8)(a0) /* get the mask */
bne t0, Lrestoresig /* if !zero, restore signals */
jmp zero, _HIDDEN(_longjmp)
Lrestoresig:
jmp zero, _HIDDEN(longjmp)
END_WEAK(siglongjmp)
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