bsd/ppc/setjmp.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /* Copyright (c) 1998 Apple Computer, Inc.  All rights reserved.
  23  *
  24  *      File:   ppc/setjmp.h
  25  *
  26  *      Declaration of setjmp routines and data structures.
  27  */
  28 #ifndef _BSD_PPC_SETJMP_H_
  29 #define _BSD_PPC_SETJMP_H_
  30
  31 #include <sys/cdefs.h>
  32 #include <machine/signal.h>
  33
  34 struct _jmp_buf {
  35         struct sigcontext       sigcontext; /* kernel state preserved by set/longjmp */
  36         unsigned long vmask __attribute__((aligned(8))); /* vector mask register */
  37         unsigned long vreg[32 * 4] __attribute__((aligned(16)));
  38                 /* 32 128-bit vector registers */
  39 };
  40
  41 /*
  42  *      _JBLEN is number of ints required to save the following:
  43  *      r1, r2, r13-r31, lr, cr, ctr, xer, sig  == 26 ints
  44  *      fr14 -  fr31 = 18 doubles = 36 ints
  45  *      vmask, 32 vector registers = 129 ints
  46  *      2 ints to get all the elements aligned
  47  */
  48
  49 #define _JBLEN (26 + 36 + 129 + 1)
  50
  51 #if defined(KERNEL)
  52 typedef struct sigcontext jmp_buf[1];
  53 typedef struct __sigjmp_buf {
  54                 int __storage[_JBLEN + 1] __attribute__((aligned(8)));
  55                 } sigjmp_buf[1];
  56 #else
  57 typedef int jmp_buf[_JBLEN];
  58 typedef int sigjmp_buf[_JBLEN + 1];
  59 #endif
  60
  61 __BEGIN_DECLS
  62 extern int setjmp __P((jmp_buf env));
  63 extern void longjmp __P((jmp_buf env, int val));
  64
  65 #ifndef _ANSI_SOURCE
  66 int sigsetjmp __P((sigjmp_buf env, int val));
  67 void siglongjmp __P((sigjmp_buf env, int val));
  68 #endif /* _ANSI_SOURCE  */
  69
  70 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
  71 int     _setjmp __P((jmp_buf env));
  72 void    _longjmp __P((jmp_buf, int val));
  73 void    longjmperror __P((void));
  74 #endif /* neither ANSI nor POSIX */
  75 __END_DECLS
  76
  77 #endif /* !_BSD_PPC_SETJMP_H_ */