bsd/ppc/setjmp.h

   1 /*
   2  * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_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 License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /* Copyright (c) 1998 Apple Computer, Inc.  All rights reserved.
  29  *
  30  *      File:   ppc/setjmp.h
  31  *
  32  *      Declaration of setjmp routines and data structures.
  33  */
  34 #ifndef _BSD_PPC_SETJMP_H_
  35 #define _BSD_PPC_SETJMP_H_
  36
  37 #include <sys/cdefs.h>
  38
  39 #define __need_struct_sigcontext
  40 #if defined(KERNEL)
  41 #define __need_struct_sigcontext32
  42 #define __need_struct_sigcontext64
  43 #endif /* KERNEL */
  44 #include <ppc/_structs.h>
  45
  46 struct _jmp_buf {
  47 #if __DARWIN_UNIX03
  48         _STRUCT_SIGCONTEXT      __sigcontext; /* kernel state preserved by set/longjmp */
  49         unsigned int __vmask __attribute__((aligned(8))); /* vector mask register */
  50         unsigned int __vreg[32 * 4] __attribute__((aligned(16)));
  51                 /* 32 128-bit vector registers */
  52 #else /* !__DARWIN_UNIX03 */
  53         _STRUCT_SIGCONTEXT      sigcontext; /* kernel state preserved by set/longjmp */
  54         unsigned int vmask __attribute__((aligned(8))); /* vector mask register */
  55         unsigned int vreg[32 * 4] __attribute__((aligned(16)));
  56                 /* 32 128-bit vector registers */
  57 #endif /* __DARWIN_UNIX03 */
  58 };
  59
  60 /*
  61  *      _JBLEN is number of ints required to save the following:
  62  *      r1, r2, r13-r31, lr, cr, ctr, xer, sig  == 26 register_t sized
  63  *      fr14 -  fr31 = 18 doubles
  64  *      vmask, 32 vector registers = 129 ints
  65  *      2 ints to get all the elements aligned
  66  *
  67  *      register_t is 2 ints for ppc64 threads
  68  */
  69 #define _JBLEN64        (26*2 + 18*2 + 129 + 1)
  70 #define _JBLEN32        (26 + 18*2 + 129 + 1)
  71 #define _JBLEN_MAX      _JBLEN64
  72
  73 /*
  74  * Locally scoped sizes
  75  */
  76 #if defined(__ppc64__)
  77 #define _JBLEN _JBLEN64
  78 #else
  79 #define _JBLEN _JBLEN32
  80 #endif
  81
  82 #if defined(KERNEL)
  83 typedef _STRUCT_SIGCONTEXT32 jmp_buf32[1];
  84 typedef struct __sigjmp_buf32 {
  85                 int __storage[_JBLEN32 + 1] __attribute__((aligned(8)));
  86                 } sigjmp_buf32[1];
  87
  88 typedef struct sigcontext64 jmp_buf64[1];
  89 typedef struct __sigjmp_buf64 {
  90                 int __storage[_JBLEN64 + 1] __attribute__((aligned(8)));
  91                 } sigjmp_buf64[1];
  92
  93 /*
  94  * JMM - have to decide how the kernel will deal with this.
  95  * For now, hard-code the 32-bit types.
  96  */
  97 typedef _STRUCT_SIGCONTEXT32 jmp_buf[1];
  98 typedef struct __sigjmp_buf32 sigjmp_buf[1];
  99
 100 #else
 101 typedef int jmp_buf[_JBLEN];
 102 typedef int sigjmp_buf[_JBLEN + 1];
 103 #endif
 104
 105 __BEGIN_DECLS
 106 int     setjmp(jmp_buf);
 107 void    longjmp(jmp_buf, int);
 108
 109 #ifndef _ANSI_SOURCE
 110 int     _setjmp(jmp_buf);
 111 void    _longjmp(jmp_buf, int);
 112 int     sigsetjmp(sigjmp_buf, int);
 113 void    siglongjmp(sigjmp_buf, int);
 114 #endif /* _ANSI_SOURCE  */
 115
 116 #if !defined(_ANSI_SOURCE) && (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE))
 117 void    longjmperror(void);
 118 #endif /* neither ANSI nor POSIX */
 119 __END_DECLS
 120
 121 #endif /* !_BSD_PPC_SETJMP_H_ */