| /* | |
| * Copyright (c) 2012, 2018 SAP SE. All rights reserved. | |
| * 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 | |
| * published by the Free Software Foundation. Oracle designates this | |
| * particular file as subject to the "Classpath" exception as provided | |
| * by Oracle in the LICENSE file that accompanied this code. | |
| * | |
| * 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 initially based on hotspot/src/os/aix/vm/{loadlib,porting}_aix.{hpp,cpp} | |
| */ | |
| /* | |
| * Aix' own version of dladdr(). | |
| * This function tries to mimic 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 sense 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); |