1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/os/aix/vm/loadlib_aix.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,128 @@
1.4 +/*
1.5 + * Copyright 2012, 2013 SAP AG. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +
1.29 +// Loadlib_aix.cpp contains support code for analysing the memory
1.30 +// layout of loaded binaries in ones own process space.
1.31 +//
1.32 +// It is needed, among other things, to provide a dladdr() emulation, because
1.33 +// that one is not provided by AIX
1.34 +
1.35 +#ifndef OS_AIX_VM_LOADLIB_AIX_HPP
1.36 +#define OS_AIX_VM_LOADLIB_AIX_HPP
1.37 +
1.38 +class outputStream;
1.39 +
1.40 +// This class holds information about a single loaded library module.
1.41 +// Note that on AIX, a single library can be spread over multiple
1.42 +// uintptr_t range on a module base, eg.
1.43 +// libC.a(shr3_64.o) or libC.a(shrcore_64.o).
1.44 +class LoadedLibraryModule {
1.45 +
1.46 + friend class LoadedLibraries;
1.47 +
1.48 + char fullpath[512]; // eg /usr/lib/libC.a
1.49 + char shortname[30]; // eg libC.a
1.50 + char membername[30]; // eg shrcore_64.o
1.51 + const unsigned char* text_from;
1.52 + const unsigned char* text_to;
1.53 + const unsigned char* data_from;
1.54 + const unsigned char* data_to;
1.55 +
1.56 + public:
1.57 +
1.58 + const char* get_fullpath() const {
1.59 + return fullpath;
1.60 + }
1.61 + const char* get_shortname() const {
1.62 + return shortname;
1.63 + }
1.64 + const char* get_membername() const {
1.65 + return membername;
1.66 + }
1.67 +
1.68 + // text_from, text_to: returns the range of the text (code)
1.69 + // segment for that module
1.70 + const unsigned char* get_text_from() const {
1.71 + return text_from;
1.72 + }
1.73 + const unsigned char* get_text_to() const {
1.74 + return text_to;
1.75 + }
1.76 +
1.77 + // data_from/data_to: returns the range of the data
1.78 + // segment for that module
1.79 + const unsigned char* get_data_from() const {
1.80 + return data_from;
1.81 + }
1.82 + const unsigned char* get_data_to() const {
1.83 + return data_to;
1.84 + }
1.85 +
1.86 + // returns true if the
1.87 + bool is_in_text(const unsigned char* p) const {
1.88 + return p >= text_from && p < text_to ? true : false;
1.89 + }
1.90 +
1.91 + bool is_in_data(const unsigned char* p) const {
1.92 + return p >= data_from && p < data_to ? true : false;
1.93 + }
1.94 +
1.95 + // output debug info
1.96 + void print(outputStream* os) const;
1.97 +
1.98 +}; // end LoadedLibraryModule
1.99 +
1.100 +// This class is a singleton holding a map of all loaded binaries
1.101 +// in the AIX process space.
1.102 +class LoadedLibraries
1.103 +// : AllStatic (including allocation.hpp just for AllStatic is overkill.)
1.104 +{
1.105 +
1.106 + private:
1.107 +
1.108 + enum {MAX_MODULES = 100};
1.109 + static LoadedLibraryModule tab[MAX_MODULES];
1.110 + static int num_loaded;
1.111 +
1.112 + public:
1.113 +
1.114 + // rebuild the internal table of LoadedLibraryModule objects
1.115 + static void reload();
1.116 +
1.117 + // checks whether the address p points to any of the loaded code segments.
1.118 + // If it does, returns the LoadedLibraryModule entry. If not, returns NULL.
1.119 + static const LoadedLibraryModule* find_for_text_address(const unsigned char* p);
1.120 +
1.121 + // checks whether the address p points to any of the loaded data segments.
1.122 + // If it does, returns the LoadedLibraryModule entry. If not, returns NULL.
1.123 + static const LoadedLibraryModule* find_for_data_address(const unsigned char* p);
1.124 +
1.125 + // output debug info
1.126 + static void print(outputStream* os);
1.127 +
1.128 +}; // end LoadedLibraries
1.129 +
1.130 +
1.131 +#endif // OS_AIX_VM_LOADLIB_AIX_HPP
