usr/src/ucbhead/setjmp.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T     */
  28 /*        All Rights Reserved   */
  29
  30 /*
  31  * University Copyright- Copyright (c) 1982, 1986, 1988
  32  * The Regents of the University of California
  33  * All Rights Reserved
  34  *
  35  * University Acknowledgment- Portions of this document are derived from
  36  * software developed by the University of California, Berkeley, and its
  37  * contributors.
  38  */
  39
  40 /*
  41  * 4.3BSD setjmp compatibility header
  42  *
  43  * 4.3BSD setjmp/longjmp is equivalent to SVR4 sigsetjmp/siglongjmp -
  44  * 4.3BSD _setjmp/_longjmp is equivalent to SVR4 setjmp/longjmp
  45  */
  46
  47 #ifndef _SETJMP_H
  48 #define _SETJMP_H
  49
  50 #include <sys/types.h>
  51 #include <sys/signal.h>
  52 #include <sys/ucontext.h>
  53
  54 #ifdef __cplusplus
  55 extern "C" {
  56 #endif
  57
  58 /*
  59  * The sizes of the jump-buffer (_JBLEN) and the sigjump-buffer
  60  * (_SIGJBLEN) are defined by the appropriate, processor specific, ABI.
  61  */
  62 #if defined(__amd64)
  63 #define _JBLEN          128     /* must be the same as _SIGJBLEN for libucb */
  64 #define _SIGJBLEN       128     /* ABI value */
  65 #elif defined(__i386)
  66 #define _JBLEN          128     /* must be the same as _SIGJBLEN for libucb */
  67 #define _SIGJBLEN       128     /* ABI value */
  68 #elif defined(__sparcv9)
  69 #define _JBLEN          19      /* ABI value */
  70 #define _SIGJBLEN       19      /* ABI value */
  71 #elif defined(__sparc)
  72 #define _JBLEN          19      /* _SIGJBLEN */
  73 #define _SIGJBLEN       19      /* ABI value */
  74 #else
  75 #error "ISA not supported"
  76 #endif
  77
  78 #if defined(__i386) || defined(__amd64) || \
  79         defined(__sparc) || defined(__sparcv9)
  80
  81 #if !defined(_LP64) && defined(__cplusplus)
  82 typedef int jmp_buf[_JBLEN];
  83 #else
  84 typedef long jmp_buf[_JBLEN];
  85 #endif
  86
  87 #else
  88 #error "ISA not supported"
  89 #endif
  90
  91 #if defined(__i386) || defined(__amd64) || \
  92         defined(__sparc) || defined(__sparcv9)
  93
  94 #if !defined(_LP64) && defined(__cplusplus)
  95 typedef int sigjmp_buf[_SIGJBLEN];
  96 #else
  97 typedef long sigjmp_buf[_SIGJBLEN];
  98 #endif
  99
 100 #else
 101 #error "ISA not supported"
 102 #endif
 103
 104 #define setjmp(env)             _sigsetjmp((env), 1)
 105 #define longjmp(env, val)       _siglongjmp((env), (val))
 106 #define _setjmp(env)            _sigsetjmp((env), 0)
 107 #define _longjmp(env, val)      _siglongjmp((env), (val))
 108
 109 #if defined(__STDC__)
 110
 111 extern int _sigsetjmp(sigjmp_buf, int) __RETURNS_TWICE;
 112 #pragma unknown_control_flow(_sigsetjmp)
 113 extern void _siglongjmp(sigjmp_buf, int) __NORETURN;
 114
 115 extern int      sigsetjmp(sigjmp_buf, int) __RETURNS_TWICE;
 116 #pragma unknown_control_flow(sigsetjmp)
 117 extern void     siglongjmp(sigjmp_buf, int) __NORETURN;
 118
 119 #else
 120
 121 extern int _sigsetjmp() __RETURNS_TWICE;
 122 #pragma unknown_control_flow(_sigsetjmp)
 123 extern void _siglongjmp();
 124
 125 extern int sigsetjmp() __RETURNS_TWICE;
 126 #pragma unknown_control_flow(sigsetjmp)
 127 extern void siglongjmp();
 128
 129 #endif  /* __STDC__ */
 130
 131 #ifdef __cplusplus
 132 }
 133 #endif
 134
 135 #endif /* _SETJMP_H */