b6cbf7203b
This patch imports the unmodified current version of NetBSD libc. The NetBSD includes are in /nbsd_include, while the libc code itself is split between lib/nbsd_libc and common/lib/libc.
73 lines
2.5 KiB
ArmAsm
73 lines
2.5 KiB
ArmAsm
/* $NetBSD: _setjmp.S,v 1.8 2008/04/28 20:22:57 martin Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1999 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Paul Kranenburg.
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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>
|
|
#include <machine/trap.h>
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
RCSID("$NetBSD: _setjmp.S,v 1.8 2008/04/28 20:22:57 martin Exp $")
|
|
#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)
|
|
st %sp, [%o0+0] /* store caller's stack pointer */
|
|
st %o7, [%o0+4] /* and the return pc */
|
|
retl
|
|
clr %o0 ! return 0
|
|
|
|
ENTRY(_longjmp)
|
|
sub %sp, 64, %sp ! set up a local stack frame
|
|
tst %o1 ! compute v ? v : 1
|
|
be,a 0f
|
|
mov 1, %o1
|
|
0:
|
|
t ST_FLUSHWIN ! flush register windows out to the stack
|
|
|
|
/*
|
|
* We restore the saved stack pointer to %fp, then issue
|
|
* a `restore' instruction which will reload the register
|
|
* window from the stack.
|
|
*/
|
|
ld [%o0+4], %o7 /* restore return pc */
|
|
ld [%o0+0], %fp /* and stack pointer */
|
|
|
|
retl ! success, return %o1
|
|
restore %o1, 0, %o0
|