bsd/ppc/setjmp.h

   1 /*
   2  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /* Copyright (c) 1998 Apple Computer, Inc.  All rights reserved.
  26  *
  27  *      File:   ppc/setjmp.h
  28  *
  29  *      Declaration of setjmp routines and data structures.
  30  */
  31 #ifndef _BSD_PPC_SETJMP_H_
  32 #define _BSD_PPC_SETJMP_H_
  33
  34 #include <sys/cdefs.h>
  35 #include <machine/signal.h>
  36
  37 struct _jmp_buf {
  38         struct sigcontext       sigcontext; /* kernel state preserved by set/longjmp */
  39         unsigned long vmask __attribute__((aligned(8))); /* vector mask register */
  40         unsigned long vreg[32 * 4] __attribute__((aligned(16)));
  41                 /* 32 128-bit vector registers */
  42 };
  43
  44 /*
  45  *      _JBLEN is number of ints required to save the following:
  46  *      r1, r2, r13-r31, lr, cr, ctr, xer, sig  == 26 ints
  47  *      fr14 -  fr31 = 18 doubles = 36 ints
  48  *      vmask, 32 vector registers = 129 ints
  49  *      2 ints to get all the elements aligned
  50  */
  51
  52 #define _JBLEN (26 + 36 + 129 + 1)
  53
  54 #if defined(KERNEL)
  55 typedef struct sigcontext jmp_buf[1];
  56 typedef struct __sigjmp_buf {
  57                 int __storage[_JBLEN + 1] __attribute__((aligned(8)));
  58                 } sigjmp_buf[1];
  59 #else
  60 typedef int jmp_buf[_JBLEN];
  61 typedef int sigjmp_buf[_JBLEN + 1];
  62 #endif
  63
  64 __BEGIN_DECLS
  65 extern int setjmp __P((jmp_buf env));
  66 extern void longjmp __P((jmp_buf env, int val));
  67
  68 #ifndef _ANSI_SOURCE
  69 int sigsetjmp __P((sigjmp_buf env, int val));
  70 void siglongjmp __P((sigjmp_buf env, int val));
  71 #endif /* _ANSI_SOURCE  */
  72
  73 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
  74 int     _setjmp __P((jmp_buf env));
  75 void    _longjmp __P((jmp_buf, int val));
  76 void    longjmperror __P((void));
  77 #endif /* neither ANSI nor POSIX */
  78 __END_DECLS
  79
  80 #endif /* !_BSD_PPC_SETJMP_H_ */