dlfcn.h

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/*
 * dlfcn-win32
 * Copyright (c) 2007 Ramiro Polla
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
 
/*
 * From https://github.com/dlfcn-win32/dlfcn-win32
 * Filtered with dos2unix and clang-format.
 */
 
#ifndef DLFCN_H
#define DLFCN_H
 
#ifdef __cplusplus
extern "C" {
#endif
 
#if defined(DLFCN_WIN32_SHARED)
#if defined(DLFCN_WIN32_EXPORTS)
#define DLFCN_EXPORT __declspec(dllexport)
#else
#define DLFCN_EXPORT __declspec(dllimport)
#endif
#else
#define DLFCN_EXPORT
#endif
 
/* Relocations are performed when the object is loaded. */
#define RTLD_NOW 0
 
/* Relocations are performed at an implementation-defined time.
 * Windows API does not support lazy symbol resolving (when first reference
 * to a given symbol occurs). So RTLD_LAZY implementation is same as RTLD_NOW.
 */
#define RTLD_LAZY RTLD_NOW
 
/* All symbols are available for relocation processing of other modules. */
#define RTLD_GLOBAL (1 << 1)
 
/* All symbols are not made available for relocation processing by other modules. */
#define RTLD_LOCAL (1 << 2)
 
/* These two were added in The Open Group Base Specifications Issue 6.
 * Note: All other RTLD_* flags in any dlfcn.h are not standard compliant.
 */
 
/* The symbol lookup happens in the normal global scope. */
#define RTLD_DEFAULT ((void*) 0)
 
/* Specifies the next object after this one that defines name. */
#define RTLD_NEXT ((void*) -1)
 
/* Structure filled in by dladdr() */
typedef struct dl_info {
    const char* dli_fname; /* Filename of defining object (thread unsafe and reused on every call to
                              dladdr) */
    void* dli_fbase;       /* Load address of that object */
    const char* dli_sname; /* Name of nearest lower symbol */
    void* dli_saddr;       /* Exact value of nearest symbol */
} Dl_info;
 
/* Open a symbol table handle. */
DLFCN_EXPORT void* dlopen(const char* file, int mode);
 
/* Close a symbol table handle. */
DLFCN_EXPORT int dlclose(void* handle);
 
/* Get the address of a symbol from a symbol table handle. */
DLFCN_EXPORT void* dlsym(void* handle, const char* name);
 
/* Get diagnostic information. */
DLFCN_EXPORT char* dlerror(void);
 
/* Translate address to symbolic information (no POSIX standard) */
DLFCN_EXPORT int dladdr(const void* addr, Dl_info* info);
 
#ifdef __cplusplus
}
#endif
 
#endif /* DLFCN_H */