bsd/i386/setjmp.h

   1 /*
   2  * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License.  The rights granted to you under the
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /* Copyright (c) 1992 NeXT Computer, Inc.  All rights reserved.
  31  *
  32  *      File:   setjmp.h
  33  *
  34  *      Declaration of setjmp routines and data structures.
  35  */
  36 #ifndef _BSD_I386_SETJMP_H
  37 #define _BSD_I386_SETJMP_H
  38
  39 #include <sys/cdefs.h>
  40 #include <machine/signal.h>
  41
  42 /*
  43  * _JBLEN is number of ints required to save the following:
  44  * eax, ebx, ecx, edx, edi, esi, ebp, esp, ss, eflags, eip,
  45  * cs, de, es, fs, gs == 16 ints
  46  * onstack, mask = 2 ints
  47  */
  48
  49 #if defined(KERNEL)
  50 typedef struct sigcontext jmp_buf[1];
  51 #define _JBLEN ((sizeof(struct sigcontext)) / sizeof(int))
  52 typedef int sigjmp_buf[_JBLEN+1];
  53 #else
  54 #define _JBLEN (18)
  55 typedef int jmp_buf[_JBLEN];
  56 typedef int sigjmp_buf[_JBLEN + 1];
  57 #endif
  58
  59
  60 __BEGIN_DECLS
  61 extern int setjmp(jmp_buf env);
  62 extern void longjmp(jmp_buf env, int val);
  63
  64 #ifndef _ANSI_SOURCE
  65 int     _setjmp(jmp_buf env);
  66 void    _longjmp(jmp_buf, int val);
  67 int sigsetjmp(sigjmp_buf env, int val);
  68 void siglongjmp(sigjmp_buf env, int val);
  69 #endif /* _ANSI_SOURCE  */
  70
  71 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE)
  72 void    longjmperror(void);
  73 #endif /* neither ANSI nor POSIX */
  74 __END_DECLS
  75 #endif /* !_BSD_I386_SETJMP_H */