dynamic_load.h

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/*
 * Copyright 2008 Search Solution Corporation
 * Copyright 2016 CUBRID Corporation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */


/*
 * dynamic_load.h - Dynamic loader for run-time inclusion of object code
 *
 */

#ifndef _DYNAMIC_LOAD_H_
#define _DYNAMIC_LOAD_H_

#ident "$Id$"

#if defined(SOLARIS)
#include <dlfcn.h>
#include <nlist.h>
#endif /* SOLARIS */
#if defined(sun)
#include <nlist.h>
#endif /* sun */
#if defined(HPUX)
#include <filehdr.h>
#include <dl.h>
#include <nlist.h>
#endif /* UPUX */
#if defined(_AIX)
#include <dlfcn.h>
#include <filehdr.h>
#include <aouthdr.h>
#include <sys/ldr.h>
#include <nlist.h>
#endif /* _AIX */
#if defined(LINUX)
#include <dlfcn.h>
#include <nlist.h>
#endif /* LINUX */

#if defined(SOLARIS) || defined(LINUX) || defined(AIX)
/* the nlist types from a.out.h */
#if !defined(N_UNDF)
#define N_UNDF  0x0     /* undefined */
#endif
#if !defined(N_EXT)
#define N_EXT   01      /* external bit, or'ed in */
#endif
#if !defined(N_TEXT)
#define N_TEXT  0x4     /* text */
#endif
#endif /* SOLARIS || LINUX || AIX */

/* Sun has valloc, HP doesn't.  The VALLOC macro hides this.
   Use free, not free_and_init to free the result of VALLOC. */
#if (defined(sun) || defined(sparc)) && !defined(SOLARIS)
#define VALLOC valloc
#elif defined(HPUX)
#define VALLOC malloc
#endif /* (sun || sparc) && !SOLARIS */

enum dl_estimate_mode
{ DL_RELATIVE, DL_ABSOLUTE };

#ifndef HPUX
struct nlist;
#endif /* HPUX */

extern int dl_Errno;

#if !defined(LINUX) && !defined(AIX)
extern const char *sys_errlist[];
#endif /* !LINUX && !AIX */


#if !defined(SOLARIS) && !defined(HPUX) && !defined(AIX) && !defined(LINUX)
extern int nlist (char *, struct nlist *);
#endif /* !SOLARIS && !HPUX && !AIX && !LINUX */

#if !defined (SOLARIS) && !defined(LINUX) && !defined(AIX)
extern int dl_initiate_module (const char *);
#else /* SOLARIS || LINUX || AIX */
extern int dl_initiate_module (void);
#endif /* SOLARIS || LINUX || AIX */

extern int dl_destroy_module (void);

#if defined (sun) || defined(SOLARIS) || defined(LINUX) || defined(HPUX) || defined(AIX)
extern int dl_resolve_object_symbol (struct nlist *syms);
#endif

#if defined(HPUX) || defined(SOLARIS) || defined(LINUX) || defined(AIX)
#if defined (ENABLE_UNUSED_FUNCTION)
extern int dl_load_object_with_estimate (const char **obj_files, const char **msgp);
#endif /* ENABLE_UNUSED_FUNCTION */
extern int dl_load_object_module (const char **, const char **);
#elif (defined(sun) || defined(sparc)) && !defined(SOLARIS)
extern int dl_load_object_module (const char **, const char **, const char **);
#if defined (ENABLE_UNUSED_FUNCTION)
extern int dl_load_object_with_estimate (size_t * actual_size, const char **obj_files, const char **msgp,
                     const char **libs, const size_t estimated_size, enum dl_estimate_mode mode);
#endif /* ENABLE_UNUSED_FUNCTION */
#endif /* (defined(sun) || defined(sparc)) && !defined(SOLARIS) */

#endif /* _DYNAMIC_LOAD_H_ */