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comparison src/share/vm/utilities/elfSymbolTable.cpp @ 14909:4ca6dc0799b6

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Backout jdk9 merge
author Gilles Duboscq <duboscq@ssw.jku.at>
date Tue, 01 Apr 2014 13:57:07 +0200
parents e7cbc95179c4
children 52b4284cb496
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14908:8db6e76cb658 14909:4ca6dc0799b6
1 /* 1 /*
2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
25 #include "precompiled.hpp" 25 #include "precompiled.hpp"
26 26
27 #if !defined(_WINDOWS) && !defined(__APPLE__) 27 #if !defined(_WINDOWS) && !defined(__APPLE__)
28 28
29 #include "memory/allocation.inline.hpp" 29 #include "memory/allocation.inline.hpp"
30 #include "utilities/elfFuncDescTable.hpp"
31 #include "utilities/elfSymbolTable.hpp" 30 #include "utilities/elfSymbolTable.hpp"
32 31
33 ElfSymbolTable::ElfSymbolTable(FILE* file, Elf_Shdr shdr) { 32 ElfSymbolTable::ElfSymbolTable(FILE* file, Elf_Shdr shdr) {
34 assert(file, "null file handle"); 33 assert(file, "null file handle");
35 m_symbols = NULL; 34 m_symbols = NULL;
67 if (m_next != NULL) { 66 if (m_next != NULL) {
68 delete m_next; 67 delete m_next;
69 } 68 }
70 } 69 }
71 70
72 bool ElfSymbolTable::lookup(address addr, int* stringtableIndex, int* posIndex, int* offset, ElfFuncDescTable* funcDescTable) { 71 bool ElfSymbolTable::lookup(address addr, int* stringtableIndex, int* posIndex, int* offset) {
73 assert(stringtableIndex, "null string table index pointer"); 72 assert(stringtableIndex, "null string table index pointer");
74 assert(posIndex, "null string table offset pointer"); 73 assert(posIndex, "null string table offset pointer");
75 assert(offset, "null offset pointer"); 74 assert(offset, "null offset pointer");
76 75
77 if (NullDecoder::is_error(m_status)) { 76 if (NullDecoder::is_error(m_status)) {
78 return false; 77 return false;
79 } 78 }
80 79
80 address pc = 0;
81 size_t sym_size = sizeof(Elf_Sym); 81 size_t sym_size = sizeof(Elf_Sym);
82 assert((m_shdr.sh_size % sym_size) == 0, "check size"); 82 assert((m_shdr.sh_size % sym_size) == 0, "check size");
83 int count = m_shdr.sh_size / sym_size; 83 int count = m_shdr.sh_size / sym_size;
84 if (m_symbols != NULL) { 84 if (m_symbols != NULL) {
85 for (int index = 0; index < count; index ++) { 85 for (int index = 0; index < count; index ++) {
86 if (STT_FUNC == ELF_ST_TYPE(m_symbols[index].st_info)) { 86 if (STT_FUNC == ELF_ST_TYPE(m_symbols[index].st_info)) {
87 Elf_Word st_size = m_symbols[index].st_size; 87 address sym_addr = (address)m_symbols[index].st_value;
88 address sym_addr; 88 if (sym_addr < addr && (addr - sym_addr) < *offset) {
89 if (funcDescTable != NULL && funcDescTable->get_index() == m_symbols[index].st_shndx) { 89 pc = (address)m_symbols[index].st_value;
90 // We need to go another step trough the function descriptor table (currently PPC64 only) 90 *offset = (int)(addr - pc);
91 sym_addr = funcDescTable->lookup(m_symbols[index].st_value);
92 } else {
93 sym_addr = (address)m_symbols[index].st_value;
94 }
95 if (sym_addr <= addr && (Elf_Word)(addr - sym_addr) < st_size) {
96 *offset = (int)(addr - sym_addr);
97 *posIndex = m_symbols[index].st_name; 91 *posIndex = m_symbols[index].st_name;
98 *stringtableIndex = m_shdr.sh_link; 92 *stringtableIndex = m_shdr.sh_link;
99 return true;
100 } 93 }
101 } 94 }
102 } 95 }
103 } else { 96 } else {
104 long cur_pos; 97 long cur_pos;
110 103
111 Elf_Sym sym; 104 Elf_Sym sym;
112 for (int index = 0; index < count; index ++) { 105 for (int index = 0; index < count; index ++) {
113 if (fread(&sym, sym_size, 1, m_file) == 1) { 106 if (fread(&sym, sym_size, 1, m_file) == 1) {
114 if (STT_FUNC == ELF_ST_TYPE(sym.st_info)) { 107 if (STT_FUNC == ELF_ST_TYPE(sym.st_info)) {
115 Elf_Word st_size = sym.st_size; 108 address sym_addr = (address)sym.st_value;
116 address sym_addr; 109 if (sym_addr < addr && (addr - sym_addr) < *offset) {
117 if (funcDescTable != NULL && funcDescTable->get_index() == sym.st_shndx) { 110 pc = (address)sym.st_value;
118 // We need to go another step trough the function descriptor table (currently PPC64 only) 111 *offset = (int)(addr - pc);
119 sym_addr = funcDescTable->lookup(sym.st_value);
120 } else {
121 sym_addr = (address)sym.st_value;
122 }
123 if (sym_addr <= addr && (Elf_Word)(addr - sym_addr) < st_size) {
124 *offset = (int)(addr - sym_addr);
125 *posIndex = sym.st_name; 112 *posIndex = sym.st_name;
126 *stringtableIndex = m_shdr.sh_link; 113 *stringtableIndex = m_shdr.sh_link;
127 return true;
128 } 114 }
129 } 115 }
130 } else { 116 } else {
131 m_status = NullDecoder::file_invalid; 117 m_status = NullDecoder::file_invalid;
132 return false; 118 return false;
135 fseek(m_file, cur_pos, SEEK_SET); 121 fseek(m_file, cur_pos, SEEK_SET);
136 } 122 }
137 return true; 123 return true;
138 } 124 }
139 125
140 #endif // !_WINDOWS && !__APPLE__ 126 #endif // _WINDOWS