diff -r 836adbf7a2cd -r 3317bb8137f4 jdk/src/demo/aix/jvmti/hprof/porting_aix.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/jdk/src/demo/aix/jvmti/hprof/porting_aix.h Sun Aug 17 15:54:13 2014 +0100 @@ -0,0 +1,59 @@ +/* + * Copyright 2012, 2013 SAP AG. 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. + * + * 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);