Fri, 05 Oct 2012 18:57:10 -0700
7177003: C1: LogCompilation support
Summary: add LogCompilation support in C1 - both client and tiered mode.
Reviewed-by: twisti, kvn
zgu@2364 | 1 | /* |
trims@2708 | 2 | * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
zgu@2364 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
zgu@2364 | 4 | * |
zgu@2364 | 5 | * This code is free software; you can redistribute it and/or modify it |
zgu@2364 | 6 | * under the terms of the GNU General Public License version 2 only, as |
zgu@2364 | 7 | * published by the Free Software Foundation. |
zgu@2364 | 8 | * |
zgu@2364 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
zgu@2364 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
zgu@2364 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
zgu@2364 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
zgu@2364 | 13 | * accompanied this code). |
zgu@2364 | 14 | * |
zgu@2364 | 15 | * You should have received a copy of the GNU General Public License version |
zgu@2364 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
zgu@2364 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
zgu@2364 | 18 | * |
zgu@2364 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
zgu@2364 | 20 | * or visit www.oracle.com if you need additional information or have any |
zgu@2364 | 21 | * questions. |
zgu@2364 | 22 | * |
zgu@2364 | 23 | */ |
zgu@2364 | 24 | |
zgu@2364 | 25 | #include "precompiled.hpp" |
zgu@2364 | 26 | |
never@3156 | 27 | #if !defined(_WINDOWS) && !defined(__APPLE__) |
zgu@2364 | 28 | |
zgu@2364 | 29 | #include "memory/allocation.inline.hpp" |
zgu@2364 | 30 | #include "utilities/elfSymbolTable.hpp" |
zgu@2364 | 31 | |
zgu@2364 | 32 | ElfSymbolTable::ElfSymbolTable(FILE* file, Elf_Shdr shdr) { |
zgu@2364 | 33 | assert(file, "null file handle"); |
zgu@2364 | 34 | m_symbols = NULL; |
zgu@2364 | 35 | m_next = NULL; |
zgu@2364 | 36 | m_file = file; |
zgu@3430 | 37 | m_status = NullDecoder::no_error; |
zgu@2364 | 38 | |
zgu@2364 | 39 | // try to load the string table |
zgu@2364 | 40 | long cur_offset = ftell(file); |
zgu@2364 | 41 | if (cur_offset != -1) { |
coleenp@2512 | 42 | // call malloc so we can back up if memory allocation fails. |
zgu@3900 | 43 | m_symbols = (Elf_Sym*)os::malloc(shdr.sh_size, mtInternal); |
zgu@2364 | 44 | if (m_symbols) { |
zgu@2364 | 45 | if (fseek(file, shdr.sh_offset, SEEK_SET) || |
zgu@2364 | 46 | fread((void*)m_symbols, shdr.sh_size, 1, file) != 1 || |
zgu@2364 | 47 | fseek(file, cur_offset, SEEK_SET)) { |
zgu@3430 | 48 | m_status = NullDecoder::file_invalid; |
coleenp@2512 | 49 | os::free(m_symbols); |
zgu@2364 | 50 | m_symbols = NULL; |
zgu@2364 | 51 | } |
zgu@2364 | 52 | } |
zgu@3430 | 53 | if (!NullDecoder::is_error(m_status)) { |
zgu@2364 | 54 | memcpy(&m_shdr, &shdr, sizeof(Elf_Shdr)); |
zgu@2364 | 55 | } |
zgu@2364 | 56 | } else { |
zgu@3430 | 57 | m_status = NullDecoder::file_invalid; |
zgu@2364 | 58 | } |
zgu@2364 | 59 | } |
zgu@2364 | 60 | |
zgu@2364 | 61 | ElfSymbolTable::~ElfSymbolTable() { |
zgu@2364 | 62 | if (m_symbols != NULL) { |
coleenp@2512 | 63 | os::free(m_symbols); |
zgu@2364 | 64 | } |
zgu@2364 | 65 | |
zgu@2364 | 66 | if (m_next != NULL) { |
zgu@2364 | 67 | delete m_next; |
zgu@2364 | 68 | } |
zgu@2364 | 69 | } |
zgu@2364 | 70 | |
zgu@3430 | 71 | bool ElfSymbolTable::lookup(address addr, int* stringtableIndex, int* posIndex, int* offset) { |
zgu@2364 | 72 | assert(stringtableIndex, "null string table index pointer"); |
zgu@2364 | 73 | assert(posIndex, "null string table offset pointer"); |
zgu@2364 | 74 | assert(offset, "null offset pointer"); |
zgu@2364 | 75 | |
zgu@3430 | 76 | if (NullDecoder::is_error(m_status)) { |
zgu@3430 | 77 | return false; |
zgu@2364 | 78 | } |
zgu@2364 | 79 | |
zgu@2364 | 80 | address pc = 0; |
zgu@2364 | 81 | size_t sym_size = sizeof(Elf_Sym); |
zgu@2364 | 82 | assert((m_shdr.sh_size % sym_size) == 0, "check size"); |
zgu@2364 | 83 | int count = m_shdr.sh_size / sym_size; |
zgu@2364 | 84 | if (m_symbols != NULL) { |
zgu@2364 | 85 | for (int index = 0; index < count; index ++) { |
zgu@2364 | 86 | if (STT_FUNC == ELF_ST_TYPE(m_symbols[index].st_info)) { |
zgu@2364 | 87 | address sym_addr = (address)m_symbols[index].st_value; |
zgu@2364 | 88 | if (sym_addr < addr && (addr - sym_addr) < *offset) { |
zgu@2364 | 89 | pc = (address)m_symbols[index].st_value; |
zgu@2364 | 90 | *offset = (int)(addr - pc); |
zgu@2364 | 91 | *posIndex = m_symbols[index].st_name; |
zgu@2364 | 92 | *stringtableIndex = m_shdr.sh_link; |
zgu@2364 | 93 | } |
zgu@2364 | 94 | } |
zgu@2364 | 95 | } |
zgu@2364 | 96 | } else { |
zgu@2364 | 97 | long cur_pos; |
zgu@2364 | 98 | if ((cur_pos = ftell(m_file)) == -1 || |
zgu@2364 | 99 | fseek(m_file, m_shdr.sh_offset, SEEK_SET)) { |
zgu@3430 | 100 | m_status = NullDecoder::file_invalid; |
zgu@3430 | 101 | return false; |
zgu@2364 | 102 | } |
zgu@2364 | 103 | |
zgu@2364 | 104 | Elf_Sym sym; |
zgu@2364 | 105 | for (int index = 0; index < count; index ++) { |
zgu@2364 | 106 | if (fread(&sym, sym_size, 1, m_file) == 1) { |
zgu@2364 | 107 | if (STT_FUNC == ELF_ST_TYPE(sym.st_info)) { |
zgu@2364 | 108 | address sym_addr = (address)sym.st_value; |
zgu@2364 | 109 | if (sym_addr < addr && (addr - sym_addr) < *offset) { |
zgu@2364 | 110 | pc = (address)sym.st_value; |
zgu@2364 | 111 | *offset = (int)(addr - pc); |
zgu@2364 | 112 | *posIndex = sym.st_name; |
zgu@2364 | 113 | *stringtableIndex = m_shdr.sh_link; |
zgu@2364 | 114 | } |
zgu@2364 | 115 | } |
zgu@2364 | 116 | } else { |
zgu@3430 | 117 | m_status = NullDecoder::file_invalid; |
zgu@3430 | 118 | return false; |
zgu@2364 | 119 | } |
zgu@2364 | 120 | } |
zgu@2364 | 121 | fseek(m_file, cur_pos, SEEK_SET); |
zgu@2364 | 122 | } |
zgu@3430 | 123 | return true; |
zgu@2364 | 124 | } |
zgu@2364 | 125 | |
zgu@2364 | 126 | #endif // _WINDOWS |