/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

/*

 * Header file to contain porting-relevant code which does not have a

 * home anywhere else.

 * This is intially based on hotspot/src/os/aix/vm/{loadlib,porting}_aix.{hpp,cpp}

 */

/*

 * Aix' own version of dladdr().

 * This function tries to mimick dladdr(3) on Linux

 * (see http://linux.die.net/man/3/dladdr)

 * dladdr(3) is not POSIX but a GNU extension, and is not available on AIX.

 *

 * Differences between AIX dladdr and Linux dladdr:

 *

 * 1) Dl_info.dli_fbase: can never work, is disabled.

 *   A loaded image on AIX is divided in multiple segments, at least two

 *   (text and data) but potentially also far more. This is because the loader may

 *   load each member into an own segment, as for instance happens with the libC.a

 * 2) Dl_info.dli_sname: This only works for code symbols (functions); for data, a

 *   zero-length string is returned ("").

 * 3) Dl_info.dli_saddr: For code, this will return the entry point of the function,

 *   not the function descriptor.

 */

typedef struct {

  const char *dli_fname; /* file path of loaded library */

  void *dli_fbase;       /* doesn't make sence on AIX */

  const char *dli_sname; /* symbol name; "" if not known */

  void *dli_saddr;       /* address of *entry* of function; not function descriptor; */

} Dl_info;

#ifdef __cplusplus

extern "C"

#endif

int dladdr(void *addr, Dl_info *info);