/*
* 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/setjmp.s
*
* Implements sigsetjmp(), setjmp(), _setjmp()
*
*/
#include <architecture/arm/asm_help.h>
#include "_setjmp.h"
/*
* setjmp routines
*/
/* int sigsetjmp(sigjmp_buf env, int savemask)ENTRY_POINT(_sigsetjmp)
str r1, [ r0, #JMP_SIGFLAG ] // save sigflag
tst r1, #0 // test if r1 is 0
beq L__exit // if r1 == 0 do _setjmp()
// else *** fall through *** to setjmp()
/* int setjmp(jmp_buf env)ENTRY_POINT(_setjmp)
str lr, [ r0, #JMP_lr ]
str r8, [ r0, #JMP_r8 ]
mov r8, r0
mov r0, #1 // get the previous signal mask
mov r1, #0 //
add r2, r8, #JMP_sig // get address where previous mask needs to be
CALL_EXTERNAL(_sigprocmask) // make a syscall to get mask
mov r0, r8 // restore jmp_buf ptr
ldr r8, [ r0, #JMP_r8 ]
ldr lr, [ r0, #JMP_lr ]
L__exit:
BRANCH_EXTERNAL(__setjmp)