i386: Move lapic function declarations from smp.h to apic/lapic.h
[dragonfly.git] / include / dlfcn.h
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fcf53d9b 1/*-
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2 * Copyright (c) 1994
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
fcf53d9b 13 * 3. Neither the name of the University nor the names of its contributors
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14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
fcf53d9b 29 * $FreeBSD: src/include/dlfcn.h,v 1.24 2010/03/24 15:59:51 gahr Exp $
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30 */
31
32#ifndef _DLFCN_H_
33#define _DLFCN_H_
34
35#include <sys/cdefs.h>
e2565a42 36#include <machine/stdint.h> /* size_t */
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37
38/*
39 * Modes and flags for dlopen().
40 */
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41#define RTLD_LAZY 1 /* Bind function calls lazily. */
42#define RTLD_NOW 2 /* Bind function calls immediately. */
43#define RTLD_MODEMASK 0x3
44#define RTLD_GLOBAL 0x100 /* Make symbols globally available. */
45#define RTLD_LOCAL 0 /* Opposite of RTLD_GLOBAL, and the default. */
46#define RTLD_TRACE 0x200 /* Trace loaded objects and exit. */
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47#define RTLD_NODELETE 0x01000 /* Do not remove members. */
48#define RTLD_NOLOAD 0x02000 /* Do not load if not already loaded. */
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49
50/*
51 * Request arguments for dlinfo().
52 */
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53#define RTLD_DI_LINKMAP 2 /* Obtain link map. */
54#define RTLD_DI_SERINFO 4 /* Obtain search path info. */
55#define RTLD_DI_SERINFOSIZE 5 /* ... query for required space. */
56#define RTLD_DI_ORIGIN 6 /* Obtain object origin */
fcf53d9b 57#define RTLD_DI_MAX RTLD_DI_ORIGIN
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58
59/*
60 * Special handle arguments for dlsym()/dlinfo().
61 */
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62#define RTLD_NEXT ((void *) -1) /* Search subsequent objects. */
63#define RTLD_DEFAULT ((void *) -2) /* Use default search algorithm. */
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64#define RTLD_SELF ((void *) -3) /* Search the caller itself. */
65
ed5d5720 66#if __BSD_VISIBLE
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67/*
68 * Structure filled in by dladdr().
69 */
70typedef struct dl_info {
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71 const char *dli_fname; /* Pathname of shared object. */
72 void *dli_fbase; /* Base address of shared object. */
73 const char *dli_sname; /* Name of nearest symbol. */
74 void *dli_saddr; /* Address of nearest symbol. */
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75} Dl_info;
76
77/*
78 * Avoid sys/types.h namespace pollution.
79 */
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80
81/*
82 * Structures, returned by the RTLD_DI_SERINFO dlinfo() request.
83 */
84typedef struct dl_serpath {
85 char * dls_name; /* single search path entry */
86 unsigned int dls_flags; /* path information */
87} Dl_serpath;
88
89typedef struct dl_serinfo {
e2565a42 90 __size_t dls_size; /* total buffer size */
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91 unsigned int dls_cnt; /* number of path entries */
92 Dl_serpath dls_serpath[1]; /* there may be more than one */
93} Dl_serinfo;
94
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95/*
96 * The actual type declared by this typedef is immaterial, provided that
97 * it is a function pointer. Its purpose is to provide a return type for
98 * dlfunc() which can be cast to a function pointer type without depending
99 * on behavior undefined by the C standard, which might trigger a compiler
100 * diagnostic. We intentionally declare a unique type signature to force
101 * a diagnostic should the application not cast the return value of dlfunc()
102 * appropriately.
103 */
104struct __dlfunc_arg {
105 int __dlfunc_dummy;
106};
107
108typedef void (*dlfunc_t)(struct __dlfunc_arg);
109
110#endif /* __BSD_VISIBLE */
111
984263bc 112__BEGIN_DECLS
139b8f34 113/* XSI functions first. */
5baeefc7 114int dlclose(void *);
fcf53d9b 115char *dlerror(void);
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116void *dlopen(const char *, int);
117void *dlsym(void * __restrict, const char * __restrict);
118
119#if __BSD_VISIBLE
120int dladdr(const void * __restrict, Dl_info * __restrict);
121dlfunc_t dlfunc(void * __restrict, const char * __restrict);
122int dlinfo(void * __restrict, int, void * __restrict);
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123void *dlvsym(void * __restrict, const char * __restrict,
124 const char * __restrict);
ed5d5720 125#endif /* __BSD_VISIBLE */
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126__END_DECLS
127
128#endif /* !_DLFCN_H_ */