minix/lib/nbsd_libc/arch/sparc64/gen/_setjmp.S

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/* $NetBSD: _setjmp.S,v 1.6 2004/12/07 08:20:07 martin Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* 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.
*
* from: Header: _setjmp.s,v 1.1 91/07/06 16:45:53 torek Exp
*/
#include <machine/asm.h>
#if defined(LIBC_SCCS) && !defined(lint)
#if 0
.asciz "@(#)_setjmp.s 8.1 (Berkeley) 6/4/93"
#else
RCSID("$NetBSD: _setjmp.S,v 1.6 2004/12/07 08:20:07 martin Exp $")
#endif
#endif /* LIBC_SCCS and not lint */
/*
* C library -- _setjmp, _longjmp
*
* _longjmp(a,v)
* will generate a "return(v?v:1)" from
* the last call to
* _setjmp(a)
* The previous signal state is NOT restored.
*/
ENTRY(_setjmp)
stx %sp, [%o0+0] /* store caller's stack pointer */
stx %o7, [%o0+8] /* and return pc */
retl
clr %o0 ! return 0
ENTRY(_longjmp)
save %sp, -CC64FSZ, %sp
flushw
/*
* We restore the saved stack pointer to %fp, then issue
* a `restore' instruction which will reload the register
* window from the stack.
*/
ldx [%i0+8], %i7
ldx [%i0+0], %fp
mov 1, %i0
movrnz %i1, %i1, %i0 ! compute v ? v : 1
ret
restore