src/java.base/aix/native/include/dl_info.h - master - githubmirror/panama-vector

src/java.base/aix/native/include/dl_info.h

49 строк2 KB

Matthias Baesken

8379802: [AIX] unify DL_info struct and put it into a single header

14 мар 2026, 17:06

14 мар 2026, 17:061606564

/*
 * Copyright (c) 1996, 2026, Oracle and/or its affiliates. All rights reserved.
 * Copyright (c) 2026 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.
 */

#ifndef AIX_INCLUDE_DL_INFO_H
#define AIX_INCLUDE_DL_INFO_H

/* struct for dladdr
 * Differences between AIX dladdr and Linux dladdr:
 *
 * 1) Dl_info.dli_fbase: can never work, is not included in our struct
 *   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 */
  const char *dli_sname; /* symbol name; "" if not known */
  void *dli_saddr;       /* address of *entry* of function; not function descriptor; */
} Dl_info;

#endif