truffle: src/share/vm/utilities/elfFile.cpp annotate

annotate src/share/vm/utilities/elfFile.cpp @ 17467:55fb97c4c58d hs25-b65

8029233: Update copyright year to match last edit in jdk8 hotspot repository for 2013 Summary: Copyright year updated for files modified during 2013 Reviewed-by: twisti, iveresov

author	mikael
date	Tue, 24 Dec 2013 11:48:39 -0800
parents	9058789475af
children	abec000618bf

rev	line source
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	1 /*
17467 55fb97c4c58d 8029233: Update copyright year to match last edit in jdk8 hotspot repository for 2013 mikael parents: 8710 diff changeset	2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	4 *
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	7 * published by the Free Software Foundation.
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	8 *
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	13 * accompanied this code).
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	14 *
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	18 *
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	20 * or visit www.oracle.com if you need additional information or have any
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	21 * questions.
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	22 *
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	23 */
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	24
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	25 #include "precompiled.hpp"
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	26
3960 f08d439fab8c 7089790: integrate bsd-port changes never parents: 3302 diff changeset	27 #if !defined(_WINDOWS) && !defined(__APPLE__)
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	28
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	29 #include <string.h>
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	30 #include <stdio.h>
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	31 #include <limits.h>
3302 2a3da7eaf4a6 7036747: 7017009 reappeared, problem with ElfStringTable zgu parents: 2022 diff changeset	32 #include <new>
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	33
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	34 #include "memory/allocation.inline.hpp"
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	35 #include "utilities/decoder.hpp"
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	36 #include "utilities/elfFile.hpp"
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	37 #include "utilities/elfStringTable.hpp"
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	38 #include "utilities/elfSymbolTable.hpp"
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	39
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	40
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	41 ElfFile::ElfFile(const char* filepath) {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	42 assert(filepath, "null file path");
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	43 memset(&m_elfHdr, 0, sizeof(m_elfHdr));
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	44 m_string_tables = NULL;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	45 m_symbol_tables = NULL;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	46 m_next = NULL;
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	47 m_status = NullDecoder::no_error;
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	48
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	49 int len = strlen(filepath) + 1;
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 4803 diff changeset	50 m_filepath = (const char)os::malloc(len sizeof(char), mtInternal);
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	51 if (m_filepath != NULL) {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	52 strcpy((char*)m_filepath, filepath);
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	53 m_file = fopen(filepath, "r");
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	54 if (m_file != NULL) {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	55 load_tables();
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	56 } else {
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	57 m_status = NullDecoder::file_not_found;
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	58 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	59 } else {
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	60 m_status = NullDecoder::out_of_memory;
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	61 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	62 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	63
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	64 ElfFile::~ElfFile() {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	65 if (m_string_tables != NULL) {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	66 delete m_string_tables;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	67 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	68
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	69 if (m_symbol_tables != NULL) {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	70 delete m_symbol_tables;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	71 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	72
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	73 if (m_file != NULL) {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	74 fclose(m_file);
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	75 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	76
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	77 if (m_filepath != NULL) {
3302 2a3da7eaf4a6 7036747: 7017009 reappeared, problem with ElfStringTable zgu parents: 2022 diff changeset	78 os::free((void*)m_filepath);
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	79 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	80
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	81 if (m_next != NULL) {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	82 delete m_next;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	83 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	84 };
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	85
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	86
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	87 //Check elf header to ensure the file is valid.
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	88 bool ElfFile::is_elf_file(Elf_Ehdr& hdr) {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	89 return (ELFMAG0 == hdr.e_ident[EI_MAG0] &&
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	90 ELFMAG1 == hdr.e_ident[EI_MAG1] &&
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	91 ELFMAG2 == hdr.e_ident[EI_MAG2] &&
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	92 ELFMAG3 == hdr.e_ident[EI_MAG3] &&
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	93 ELFCLASSNONE != hdr.e_ident[EI_CLASS] &&
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	94 ELFDATANONE != hdr.e_ident[EI_DATA]);
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	95 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	96
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	97 bool ElfFile::load_tables() {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	98 assert(m_file, "file not open");
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	99 assert(!NullDecoder::is_error(m_status), "already in error");
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	100
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	101 // read elf file header
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	102 if (fread(&m_elfHdr, sizeof(m_elfHdr), 1, m_file) != 1) {
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	103 m_status = NullDecoder::file_invalid;
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	104 return false;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	105 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	106
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	107 if (!is_elf_file(m_elfHdr)) {
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	108 m_status = NullDecoder::file_invalid;
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	109 return false;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	110 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	111
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	112 // walk elf file's section headers, and load string tables
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	113 Elf_Shdr shdr;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	114 if (!fseek(m_file, m_elfHdr.e_shoff, SEEK_SET)) {
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	115 if (NullDecoder::is_error(m_status)) return false;
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	116
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	117 for (int index = 0; index < m_elfHdr.e_shnum; index ++) {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	118 if (fread((void*)&shdr, sizeof(Elf_Shdr), 1, m_file) != 1) {
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	119 m_status = NullDecoder::file_invalid;
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	120 return false;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	121 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	122 // string table
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	123 if (shdr.sh_type == SHT_STRTAB) {
3302 2a3da7eaf4a6 7036747: 7017009 reappeared, problem with ElfStringTable zgu parents: 2022 diff changeset	124 ElfStringTable* table = new (std::nothrow) ElfStringTable(m_file, shdr, index);
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	125 if (table == NULL) {
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	126 m_status = NullDecoder::out_of_memory;
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	127 return false;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	128 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	129 add_string_table(table);
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	130 } else if (shdr.sh_type == SHT_SYMTAB \|\| shdr.sh_type == SHT_DYNSYM) {
3302 2a3da7eaf4a6 7036747: 7017009 reappeared, problem with ElfStringTable zgu parents: 2022 diff changeset	131 ElfSymbolTable* table = new (std::nothrow) ElfSymbolTable(m_file, shdr);
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	132 if (table == NULL) {
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	133 m_status = NullDecoder::out_of_memory;
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	134 return false;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	135 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	136 add_symbol_table(table);
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	137 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	138 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	139 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	140 return true;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	141 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	142
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	143 bool ElfFile::decode(address addr, char* buf, int buflen, int* offset) {
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	144 // something already went wrong, just give up
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	145 if (NullDecoder::is_error(m_status)) {
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	146 return false;
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	147 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	148 ElfSymbolTable* symbol_table = m_symbol_tables;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	149 int string_table_index;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	150 int pos_in_string_table;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	151 int off = INT_MAX;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	152 bool found_symbol = false;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	153 while (symbol_table != NULL) {
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	154 if (symbol_table->lookup(addr, &string_table_index, &pos_in_string_table, &off)) {
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	155 found_symbol = true;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	156 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	157 symbol_table = symbol_table->m_next;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	158 }
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	159 if (!found_symbol) return false;
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	160
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	161 ElfStringTable* string_table = get_string_table(string_table_index);
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	162
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	163 if (string_table == NULL) {
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	164 m_status = NullDecoder::file_invalid;
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	165 return false;
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	166 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	167 if (offset) *offset = off;
4803 d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	168
d7e3846464d0 7071311: Decoder enhancement zgu parents: 3960 diff changeset	169 return string_table->string_at(pos_in_string_table, buf, buflen);
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	170 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	171
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	172
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	173 void ElfFile::add_symbol_table(ElfSymbolTable* table) {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	174 if (m_symbol_tables == NULL) {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	175 m_symbol_tables = table;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	176 } else {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	177 table->m_next = m_symbol_tables;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	178 m_symbol_tables = table;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	179 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	180 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	181
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	182 void ElfFile::add_string_table(ElfStringTable* table) {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	183 if (m_string_tables == NULL) {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	184 m_string_tables = table;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	185 } else {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	186 table->m_next = m_string_tables;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	187 m_string_tables = table;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	188 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	189 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	190
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	191 ElfStringTable* ElfFile::get_string_table(int index) {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	192 ElfStringTable* p = m_string_tables;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	193 while (p != NULL) {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	194 if (p->index() == index) return p;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	195 p = p->m_next;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	196 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	197 return NULL;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	198 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	199
8710 9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	200 #ifdef LINUX
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	201 bool ElfFile::specifies_noexecstack() {
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	202 Elf_Phdr phdr;
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	203 if (!m_file) return true;
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	204
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	205 if (!fseek(m_file, m_elfHdr.e_phoff, SEEK_SET)) {
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	206 for (int index = 0; index < m_elfHdr.e_phnum; index ++) {
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	207 if (fread((void*)&phdr, sizeof(Elf_Phdr), 1, m_file) != 1) {
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	208 m_status = NullDecoder::file_invalid;
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	209 return false;
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	210 }
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	211 if (phdr.p_type == PT_GNU_STACK) {
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	212 if (phdr.p_flags == (PF_R \| PF_W)) {
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	213 return true;
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	214 } else {
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	215 return false;
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	216 }
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	217 }
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	218 }
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	219 }
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	220 return false;
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	221 }
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	222 #endif
9058789475af 7107135: Stack guard pages are no more protected after loading a shared library with executable stack iklam parents: 6842 diff changeset	223
2022 2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project) zgu parents: diff changeset	224 #endif // _WINDOWS

Mercurial > hg > truffle

annotate src/share/vm/utilities/elfFile.cpp @ 17467:55fb97c4c58d hs25-b65