minix/lib/libc/arch/m68k/gen/sigsetjmp.S

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/* $NetBSD: sigsetjmp.S,v 1.10 2013/07/16 22:12:20 matt Exp $ */
/*-
* Copyright (c) 1990 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.
*/
#include <machine/asm.h>
#if defined(LIBC_SCCS) && !defined(lint)
#if 0
RCSID("from: @(#)_setjmp.s 5.1 (Berkeley) 5/12/90")
#else
RCSID("$NetBSD: sigsetjmp.S,v 1.10 2013/07/16 22:12:20 matt Exp $")
#endif
#endif /* LIBC_SCCS and not lint */
/*
* C library -- sigsetjmp, siglongjmp
*
* siglongjmp(a,v)
* will generate a "return(v)" from
* the last call to
* sigsetjmp(a,m)
* by restoring registers from the stack,
* The previous signal state is restored if 'm' was non-zero.
*/
/* grab _JBLEN */
#include <m68k/setjmp.h>
ENTRY(__sigsetjmp14)
movl 8(%sp),%d1 /* grab the mask */
movl 4(%sp),%a0 /* grab the area pointer */
movl %d1,(_JBLEN * 4)(%a0) /* save at end of area */
tstl %d1
bne dosig
jra PIC_PLT(_C_LABEL(_setjmp))
dosig:
jra PIC_PLT(_C_LABEL(__setjmp14))
END(__sigsetjmp14)
ENTRY(__siglongjmp14)
movl 4(%sp),%a0 /* save area pointer */
tstl (_JBLEN * 4)(%a0) /* check mask... */
bne didsig
jra PIC_PLT(_C_LABEL(_longjmp))
didsig:
jra PIC_PLT(_C_LABEL(__longjmp14))
END(__siglongjmp14)