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.
88 lines
3.1 KiB
ArmAsm
88 lines
3.1 KiB
ArmAsm
/* $NetBSD: _setjmp.S,v 1.7 2003/08/07 16:42:10 agc 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: _setjmp.S,v 1.7 2003/08/07 16:42:10 agc Exp $")
|
|
#endif
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
/*
|
|
* C library -- _setjmp, _longjmp
|
|
*
|
|
* _longjmp(a,v)
|
|
* will generate a "return(v)" from
|
|
* the last call to
|
|
* _setjmp(a)
|
|
* by restoring registers from the stack,
|
|
* The previous signal state is NOT restored.
|
|
*/
|
|
|
|
ENTRY(_setjmp)
|
|
movl %sp@(4),%a0 /* save area pointer */
|
|
clrl %a0@+ /* no old onstack */
|
|
clrl %a0@+ /* no old sigmask */
|
|
movl %sp,%a0@+ /* save old SP */
|
|
movl %a6,%a0@+ /* save old FP */
|
|
clrl %a0@+ /* no old AP */
|
|
movl %sp@,%a0@+ /* save old PC */
|
|
clrl %a0@+ /* clear PS */
|
|
moveml #0x3CFC,%a0@ /* save other non-scratch regs */
|
|
clrl %d0 /* return zero */
|
|
rts
|
|
|
|
ENTRY(_longjmp)
|
|
movl %sp@(4),%a0 /* save area pointer */
|
|
addql #8,%a0 /* skip onstack/sigmask */
|
|
tstl %a0@ /* ensure non-zero SP */
|
|
jeq botch /* oops! */
|
|
movl %sp@(8),%d0 /* grab return value */
|
|
jne ok /* non-zero ok */
|
|
moveq #1,%d0 /* else make non-zero */
|
|
ok:
|
|
movl %a0@+,%sp /* restore SP */
|
|
movl %a0@+,%a6 /* restore FP */
|
|
addql #4,%a0 /* skip AP */
|
|
movl %a0@+,%sp@ /* restore PC */
|
|
moveml %a0@(4),#0x3CFC /* restore non-scratch regs */
|
|
rts
|
|
|
|
botch:
|
|
jbsr PIC_PLT(_C_LABEL(longjmperror))
|
|
stop #0
|