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      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 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     51 
     52 #include <sys/types.h>
     53 #include <sys/signal.h>
     54 #include <sys/ucontext.h>
     55 
     56 #ifdef __cplusplus
     57 extern "C" {
     58 #endif
     59 
     60 /*
     61  * The sizes of the jump-buffer (_JBLEN) and the sigjump-buffer
     62  * (_SIGJBLEN) are defined by the appropriate, processor specific, ABI.
     63  */
     64 #if defined(__amd64)
     65 #define	_JBLEN		128	/* must be the same as _SIGJBLEN for libucb */
     66 #define	_SIGJBLEN	128	/* ABI value */
     67 #elif defined(__i386)
     68 #define	_JBLEN		128	/* must be the same as _SIGJBLEN for libucb */
     69 #define	_SIGJBLEN	128	/* ABI value */
     70 #elif defined(__sparcv9)
     71 #define	_JBLEN		19	/* ABI value */
     72 #define	_SIGJBLEN	19	/* ABI value */
     73 #elif defined(__sparc)
     74 #define	_JBLEN		19	/* _SIGJBLEN */
     75 #define	_SIGJBLEN	19	/* ABI value */
     76 #else
     77 #error "ISA not supported"
     78 #endif
     79 
     80 #if defined(__i386) || defined(__amd64) || \
     81 	defined(__sparc) || defined(__sparcv9)
     82 
     83 #if !defined(_LP64) && defined(__cplusplus)
     84 typedef int jmp_buf[_JBLEN];
     85 #else
     86 typedef long jmp_buf[_JBLEN];
     87 #endif
     88 
     89 #else
     90 #error "ISA not supported"
     91 #endif
     92 
     93 #if defined(__i386) || defined(__amd64) || \
     94 	defined(__sparc) || defined(__sparcv9)
     95 
     96 #if !defined(_LP64) && defined(__cplusplus)
     97 typedef int sigjmp_buf[_SIGJBLEN];
     98 #else
     99 typedef long sigjmp_buf[_SIGJBLEN];
    100 #endif
    101 
    102 #else
    103 #error "ISA not supported"
    104 #endif
    105 
    106 #define	setjmp(env)		_sigsetjmp((env), 1)
    107 #define	longjmp(env, val)	_siglongjmp((env), (val))
    108 #define	_setjmp(env)		_sigsetjmp((env), 0)
    109 #define	_longjmp(env, val)	_siglongjmp((env), (val))
    110 
    111 #if defined(__STDC__)
    112 
    113 extern int _sigsetjmp(sigjmp_buf, int);
    114 #pragma unknown_control_flow(_sigsetjmp)
    115 extern void _siglongjmp(sigjmp_buf, int) __NORETURN;
    116 
    117 extern int	sigsetjmp(sigjmp_buf, int);
    118 #pragma unknown_control_flow(sigsetjmp)
    119 extern void	siglongjmp(sigjmp_buf, int) __NORETURN;
    120 
    121 #else
    122 
    123 extern int _sigsetjmp();
    124 #pragma unknown_control_flow(_sigsetjmp)
    125 extern void _siglongjmp();
    126 
    127 extern int sigsetjmp();
    128 #pragma unknown_control_flow(sigsetjmp)
    129 extern void siglongjmp();
    130 
    131 #endif  /* __STDC__ */
    132 
    133 #ifdef __cplusplus
    134 }
    135 #endif
    136 
    137 #endif /* _SETJMP_H */
    138