/*
* 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 Apple Computer, Inc. All rights reserved.
*
* File: sys/ppc/longjmp.s
*
* Implements siglongjmp(), longjmp(), _longjmp()
*
* NOTE: Scatterloading this file will BREAK the functions.
*
* History:
* 30-Aug-1998 Umesh Vaishampayan (umeshv@apple.com)
* Created. Derived from _setjmp.s, setjmp.c and setjmp.s
*/
/* We use mode-independent "g" opcodes such as "stg", and/or
* mode-independent macros such as MI_GET_ADDRESS. These expand
* into word operations when targeting __ppc__, and into doubleword
* operations when targeting __ppc64__.
*/
#include <architecture/ppc/mode_independent_asm.h>
#include "SYS.h"
#include "_setjmp.h"
/*
* longjmp routines
*/
/* void siglongjmp(sigjmp_buf env, int val)MI_ENTRY_POINT(_siglongjmp)
lg r0, JMP_SIGFLAG(r3) beq-- cr1, L__exit
/* void longjmp(jmp_buf env, int val)MI_ENTRY_POINT(_longjmp)
mr r30, r3
/* NB: this code assumes the signal mask is an int. Change the "lwz" below
* if not. The JMP_sig field is already 8 bytes in the jmpbuf.
*/
lwz r3, JMP_sig(r3) mr r4, r31
mr r3, r30
L__exit:
MI_BRANCH_EXTERNAL(__longjmp)