/*
 * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_OSREFERENCE_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.  The rights granted to you under the 
 * License may not be used to create, or enable the creation or 
 * redistribution of, unlawful or unlicensed copies of an Apple operating 
 * system, or to circumvent, violate, or enable the circumvention or 
 * violation of, any terms of an Apple operating system software license 
 * agreement.
 *
 * 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_OSREFERENCE_HEADER_END@
 */
/* Copyright (c) 1992 NeXT Computer, Inc.  All rights reserved.
 *
 *	File:	setjmp.h
 *
 *	Declaration of setjmp routines and data structures.
 */
#ifndef _BSD_I386_SETJMP_H
#define _BSD_I386_SETJMP_H

#include <sys/cdefs.h>
#include <machine/signal.h>


#if defined(__x86_64__)
/*
 * _JBLEN is number of ints required to save the following:
 * rflags, rip, rbp, rsp, rbx, r12, r13, r14, r15... these are 8 bytes each
 * mxcsr, fp control word, sigmask... these are 4 bytes each
 * add 16 ints for future expansion needs...
 */
#define _JBLEN ((9 * 2) + 3 + 16)
typedef int jmp_buf[_JBLEN];
typedef int sigjmp_buf[_JBLEN + 1];

#else

/*
 * _JBLEN is number of ints required to save the following:
 * eax, ebx, ecx, edx, edi, esi, ebp, esp, ss, eflags, eip,
 * cs, de, es, fs, gs == 16 ints
 * onstack, mask = 2 ints
 */

#if defined(KERNEL)
typedef struct sigcontext jmp_buf[1];
#define _JBLEN ((sizeof(struct sigcontext)) / sizeof(int))
typedef int sigjmp_buf[_JBLEN+1];
#else
#define _JBLEN (18)
typedef int jmp_buf[_JBLEN];
typedef int sigjmp_buf[_JBLEN + 1];
#endif

#endif

__BEGIN_DECLS
extern int setjmp(jmp_buf env);
extern void longjmp(jmp_buf env, int val);

#ifndef _ANSI_SOURCE
int	_setjmp(jmp_buf env);
void	_longjmp(jmp_buf, int val);
int sigsetjmp(sigjmp_buf env, int val);
void siglongjmp(sigjmp_buf env, int val);
#endif /* _ANSI_SOURCE  */

#if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE)
void	longjmperror(void);
#endif /* neither ANSI nor POSIX */
__END_DECLS
#endif /* !_BSD_I386_SETJMP_H */
