/*
 * Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
 * Distributed under the terms of the MIT License.
 */
#ifndef POSIX_ERROR_MAPPER_H
#define POSIX_ERROR_MAPPER_H

#include <dlfcn.h>
#include <errno.h>

#include <Errors.h>


#define GET_REAL_FUNCTION(returnValue, function, parameters)            \
        static returnValue (*sReal_##function)parameters                                \
                = (returnValue (*)parameters)dlsym(RTLD_DEFAULT, #function)

#define HIDDEN_FUNCTION(function)       asm volatile(".hidden " #function)

#define WRAPPER_FUNCTION(returnValue, function, parameters, body)       \
returnValue function parameters                                                                         \
{                                                                                                                                       \
        HIDDEN_FUNCTION(function);                                                                              \
        GET_REAL_FUNCTION(returnValue, function, parameters);                   \
        body                                                                                                                    \
}

#endif  // POSIX_ERROR_MAPPER_H