xref: /illumos-gate/usr/src/head/iso/setjmp_iso.h (revision 6a3e8e86)
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 /*	Copyright (c) 1988 AT&T	*/
23 /*	  All Rights Reserved  	*/
24 
25 
26 /*
27  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
28  * Use is subject to license terms.
29  */
30 
31 /*
32  * An application should not include this header directly.  Instead it
33  * should be included only through the inclusion of other Sun headers.
34  *
35  * The contents of this header is limited to identifiers specified in the
36  * C Standard.  Any new identifiers specified in future amendments to the
37  * C Standard must be placed in this header.  If these new identifiers
38  * are required to also be in the C++ Standard "std" namespace, then for
39  * anything other than macro definitions, corresponding "using" directives
40  * must also be added to <setjmp.h>.
41  */
42 
43 #ifndef _ISO_SETJMP_ISO_H
44 #define	_ISO_SETJMP_ISO_H
45 
46 #include <sys/feature_tests.h>
47 
48 #ifdef	__cplusplus
49 extern "C" {
50 #endif
51 
52 #ifndef _JBLEN
53 
54 /*
55  * The sizes of the jump-buffer (_JBLEN) and the sigjump-buffer
56  * (_SIGJBLEN) are defined by the appropriate, processor specific,
57  * ABI.
58  */
59 #if defined(__amd64)
60 #define	_JBLEN		8	/* ABI value */
61 #define	_SIGJBLEN	128	/* ABI value */
62 #elif defined(__i386)
63 #define	_JBLEN		10	/* ABI value */
64 #define	_SIGJBLEN	128	/* ABI value */
65 #elif defined(__sparcv9)
66 #define	_JBLEN		12	/* ABI value */
67 #define	_SIGJBLEN	19	/* ABI value */
68 #elif defined(__sparc)
69 #define	_JBLEN		12	/* ABI value */
70 #define	_SIGJBLEN	19	/* ABI value */
71 #else
72 #error "ISA not supported"
73 #endif
74 
75 #if __cplusplus >= 199711L
76 namespace std {
77 #endif
78 
79 #if defined(__i386) || defined(__amd64) || \
80 	defined(__sparc) || defined(__sparcv9)
81 #if defined(_LP64) || defined(_I32LPx)
82 typedef long	jmp_buf[_JBLEN];
83 #else
84 typedef int	jmp_buf[_JBLEN];
85 #endif
86 #else
87 #error "ISA not supported"
88 #endif
89 
90 #if defined(__STDC__)
91 
92 extern int setjmp(jmp_buf) __RETURNS_TWICE;
93 #pragma unknown_control_flow(setjmp)
94 extern int _setjmp(jmp_buf) __RETURNS_TWICE;
95 #pragma unknown_control_flow(_setjmp)
96 extern void longjmp(jmp_buf, int) __NORETURN;
97 extern void _longjmp(jmp_buf, int) __NORETURN;
98 
99 #else
100 
101 extern int setjmp() __RETURNS_TWICE;
102 #pragma unknown_control_flow(setjmp)
103 extern int _setjmp() __RETURNS_TWICE;
104 #pragma unknown_control_flow(_setjmp)
105 extern void longjmp();
106 extern void _longjmp();
107 
108 #endif  /* __STDC__ */
109 
110 #if __cplusplus >= 199711L
111 }
112 #endif /* end of namespace std */
113 
114 #if __cplusplus >= 199711L
115 using std::setjmp;
116 #endif
117 
118 #if defined(_STRICT_STDC) || __cplusplus >= 199711L
119 #define	setjmp(env)	setjmp(env)
120 #endif
121 
122 #endif  /* _JBLEN */
123 
124 #ifdef	__cplusplus
125 }
126 #endif
127 
128 #endif	/* _ISO_SETJMP_ISO_H */
129