/*
* Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
/*
* Copyright (c) 1998-2008 Apple Inc. All rights reserved.
*
* File: sys/arm/longjmp.s
*
* Implements siglongjmp(), longjmp(), _longjmp()
*
*/
#include <architecture/arm/asm_help.h>
#include "_setjmp.h"
/*
* longjmp routines
*/
/* void siglongjmp(sigjmp_buf env, int val)ENTRY_POINT(_siglongjmp)
ldr r2, [ r0, #JMP_SIGFLAG ] // load sigflag
tst r2, #0 // test if zero
beq L__exit // if zero do _longjmp()
// else *** fall through *** to longjmp()
/* void longjmp(jmp_buf env, int val)ENTRY_POINT(_longjmp)
mov r6, r0 // preserve args across _sigsetmask
mov r8, r1
ldr r0, [ r0, #JMP_sig ] // restore the signal mask
CALL_EXTERNAL(_sigsetmask) // make a (deprecated!) syscall to set the mask
mov r1, r8
mov r0, r6
L__exit:
BRANCH_EXTERNAL(__longjmp)