2006-08-05 01:10:59 +02:00
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// object.h -- support for an object file for linking in gold -*- C++ -*-
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2012-04-26 02:07:21 +02:00
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// Copyright 2006, 2007, 2008, 2009, 2010, 2011, 2012
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// Free Software Foundation, Inc.
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2007-09-22 23:02:10 +02:00
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// Written by Ian Lance Taylor <iant@google.com>.
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// This file is part of gold.
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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// MA 02110-1301, USA.
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2006-08-05 01:10:59 +02:00
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#ifndef GOLD_OBJECT_H
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#define GOLD_OBJECT_H
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2006-10-20 22:40:49 +02:00
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#include <string>
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2006-09-22 00:13:18 +02:00
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#include <vector>
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2006-08-19 00:29:20 +02:00
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2006-08-05 01:10:59 +02:00
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#include "elfcpp.h"
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2006-11-07 19:51:39 +01:00
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#include "elfcpp_file.h"
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2006-08-05 01:10:59 +02:00
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#include "fileread.h"
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2006-08-19 00:29:20 +02:00
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#include "target.h"
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2010-03-22 15:18:24 +01:00
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#include "archive.h"
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2006-08-05 01:10:59 +02:00
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namespace gold
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{
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2006-10-20 22:40:49 +02:00
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class General_options;
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2007-12-14 20:00:21 +01:00
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class Task;
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2008-07-23 00:08:43 +02:00
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class Cref;
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2006-09-22 00:13:18 +02:00
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class Layout;
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2010-08-20 00:50:16 +02:00
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class Output_data;
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2006-09-29 21:58:17 +02:00
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class Output_section;
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class Output_file;
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2008-04-19 20:30:58 +02:00
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class Output_symtab_xindex;
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2008-09-20 00:54:57 +02:00
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class Pluginobj;
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2006-11-06 23:46:08 +01:00
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class Dynobj;
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2007-11-27 07:13:33 +01:00
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class Object_merge_map;
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2008-02-06 09:13:50 +01:00
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class Relocatable_relocs;
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2012-04-26 02:07:21 +02:00
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struct Symbols_data;
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2006-09-22 00:13:18 +02:00
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2007-05-16 19:42:48 +02:00
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template<typename Stringpool_char>
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class Stringpool_template;
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2006-08-05 01:10:59 +02:00
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// Data to pass from read_symbols() to add_symbols().
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struct Read_symbols_data
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{
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2010-04-08 00:58:23 +02:00
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Read_symbols_data()
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: section_headers(NULL), section_names(NULL), symbols(NULL),
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symbol_names(NULL), versym(NULL), verdef(NULL), verneed(NULL)
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{ }
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~Read_symbols_data();
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2006-10-06 22:40:16 +02:00
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// Section headers.
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File_view* section_headers;
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// Section names.
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File_view* section_names;
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// Size of section name data in bytes.
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2007-12-18 01:48:04 +01:00
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section_size_type section_names_size;
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2006-08-05 01:10:59 +02:00
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// Symbol data.
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File_view* symbols;
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// Size of symbol data in bytes.
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2007-12-18 01:48:04 +01:00
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section_size_type symbols_size;
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2007-11-09 08:00:15 +01:00
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// Offset of external symbols within symbol data. This structure
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// sometimes contains only external symbols, in which case this will
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// be zero. Sometimes it contains all symbols.
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2007-12-18 01:48:04 +01:00
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section_offset_type external_symbols_offset;
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2006-08-05 01:10:59 +02:00
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// Symbol names.
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File_view* symbol_names;
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// Size of symbol name data in bytes.
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2007-12-18 01:48:04 +01:00
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section_size_type symbol_names_size;
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2006-11-14 20:21:05 +01:00
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// Version information. This is only used on dynamic objects.
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// Version symbol data (from SHT_GNU_versym section).
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File_view* versym;
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2007-12-18 01:48:04 +01:00
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section_size_type versym_size;
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2006-11-14 20:21:05 +01:00
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// Version definition data (from SHT_GNU_verdef section).
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File_view* verdef;
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2007-12-18 01:48:04 +01:00
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section_size_type verdef_size;
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2006-11-14 20:21:05 +01:00
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unsigned int verdef_info;
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// Needed version data (from SHT_GNU_verneed section).
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File_view* verneed;
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2007-12-18 01:48:04 +01:00
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section_size_type verneed_size;
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2006-11-14 20:21:05 +01:00
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unsigned int verneed_info;
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2006-08-05 01:10:59 +02:00
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};
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2007-11-02 04:28:52 +01:00
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// Information used to print error messages.
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struct Symbol_location_info
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{
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std::string source_file;
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std::string enclosing_symbol_name;
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int line_number;
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};
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2006-10-20 22:40:49 +02:00
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// Data about a single relocation section. This is read in
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// read_relocs and processed in scan_relocs.
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struct Section_relocs
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{
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2010-04-08 00:58:23 +02:00
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Section_relocs()
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: contents(NULL)
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{ }
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~Section_relocs()
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{ delete this->contents; }
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2006-10-20 22:40:49 +02:00
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// Index of reloc section.
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unsigned int reloc_shndx;
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// Index of section that relocs apply to.
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unsigned int data_shndx;
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// Contents of reloc section.
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File_view* contents;
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// Reloc section type.
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unsigned int sh_type;
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// Number of reloc entries.
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size_t reloc_count;
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2007-11-09 08:00:15 +01:00
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// Output section.
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Output_section* output_section;
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// Whether this section has special handling for offsets.
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bool needs_special_offset_handling;
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2008-02-27 23:38:18 +01:00
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// Whether the data section is allocated (has the SHF_ALLOC flag set).
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bool is_data_section_allocated;
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2006-10-20 22:40:49 +02:00
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};
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// Relocations in an object file. This is read in read_relocs and
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// processed in scan_relocs.
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struct Read_relocs_data
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{
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2010-04-08 00:58:23 +02:00
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Read_relocs_data()
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: local_symbols(NULL)
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{ }
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~Read_relocs_data()
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{ delete this->local_symbols; }
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2006-10-20 22:40:49 +02:00
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typedef std::vector<Section_relocs> Relocs_list;
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// The relocations.
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Relocs_list relocs;
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// The local symbols.
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File_view* local_symbols;
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};
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2008-04-19 20:30:58 +02:00
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// The Xindex class manages section indexes for objects with more than
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// 0xff00 sections.
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class Xindex
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{
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public:
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Xindex(int large_shndx_offset)
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: large_shndx_offset_(large_shndx_offset), symtab_xindex_()
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{ }
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// Initialize the symtab_xindex_ array, given the object and the
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// section index of the symbol table to use.
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template<int size, bool big_endian>
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void
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initialize_symtab_xindex(Object*, unsigned int symtab_shndx);
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// Read in the symtab_xindex_ array, given its section index.
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// PSHDRS may optionally point to the section headers.
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template<int size, bool big_endian>
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void
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read_symtab_xindex(Object*, unsigned int xindex_shndx,
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const unsigned char* pshdrs);
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// Symbol SYMNDX in OBJECT has a section of SHN_XINDEX; return the
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// real section index.
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unsigned int
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sym_xindex_to_shndx(Object* object, unsigned int symndx);
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private:
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// The type of the array giving the real section index for symbols
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// whose st_shndx field holds SHN_XINDEX.
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typedef std::vector<unsigned int> Symtab_xindex;
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// Adjust a section index if necessary. This should only be called
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// for ordinary section indexes.
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unsigned int
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adjust_shndx(unsigned int shndx)
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{
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if (shndx >= elfcpp::SHN_LORESERVE)
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shndx += this->large_shndx_offset_;
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return shndx;
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}
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// Adjust to apply to large section indexes.
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int large_shndx_offset_;
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// The data from the SHT_SYMTAB_SHNDX section.
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Symtab_xindex symtab_xindex_;
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};
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2011-04-12 02:44:48 +02:00
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// A GOT offset list. A symbol may have more than one GOT offset
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// (e.g., when mixing modules compiled with two different TLS models),
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// but will usually have at most one. GOT_TYPE identifies the type of
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// GOT entry; its values are specific to each target.
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class Got_offset_list
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{
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public:
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Got_offset_list()
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: got_type_(-1U), got_offset_(0), got_next_(NULL)
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{ }
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Got_offset_list(unsigned int got_type, unsigned int got_offset)
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: got_type_(got_type), got_offset_(got_offset), got_next_(NULL)
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{ }
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~Got_offset_list()
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{
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if (this->got_next_ != NULL)
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{
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delete this->got_next_;
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this->got_next_ = NULL;
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}
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}
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// Initialize the fields to their default values.
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void
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init()
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{
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this->got_type_ = -1U;
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this->got_offset_ = 0;
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this->got_next_ = NULL;
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}
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// Set the offset for the GOT entry of type GOT_TYPE.
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void
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set_offset(unsigned int got_type, unsigned int got_offset)
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{
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if (this->got_type_ == -1U)
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{
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this->got_type_ = got_type;
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this->got_offset_ = got_offset;
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}
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else
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{
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for (Got_offset_list* g = this; g != NULL; g = g->got_next_)
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{
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if (g->got_type_ == got_type)
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{
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g->got_offset_ = got_offset;
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return;
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}
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}
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Got_offset_list* g = new Got_offset_list(got_type, got_offset);
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g->got_next_ = this->got_next_;
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this->got_next_ = g;
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}
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}
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// Return the offset for a GOT entry of type GOT_TYPE.
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unsigned int
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get_offset(unsigned int got_type) const
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{
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for (const Got_offset_list* g = this; g != NULL; g = g->got_next_)
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{
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if (g->got_type_ == got_type)
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return g->got_offset_;
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}
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return -1U;
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}
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// Return a pointer to the list, or NULL if the list is empty.
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const Got_offset_list*
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get_list() const
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{
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if (this->got_type_ == -1U)
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return NULL;
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return this;
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}
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// Abstract visitor class for iterating over GOT offsets.
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class Visitor
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{
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public:
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Visitor()
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{ }
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virtual
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~Visitor()
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{ }
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virtual void
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visit(unsigned int, unsigned int) = 0;
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};
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// Loop over all GOT offset entries, calling a visitor class V for each.
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void
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for_all_got_offsets(Visitor* v) const
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{
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if (this->got_type_ == -1U)
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return;
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for (const Got_offset_list* g = this; g != NULL; g = g->got_next_)
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v->visit(g->got_type_, g->got_offset_);
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}
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private:
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unsigned int got_type_;
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unsigned int got_offset_;
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Got_offset_list* got_next_;
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};
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2006-11-06 23:46:08 +01:00
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// Object is an abstract base class which represents either a 32-bit
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// or a 64-bit input object. This can be a regular object file
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// (ET_REL) or a shared object (ET_DYN).
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2006-08-05 01:10:59 +02:00
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class Object
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{
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public:
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2010-01-05 22:52:51 +01:00
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typedef std::vector<Symbol*> Symbols;
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2006-08-05 01:10:59 +02:00
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// NAME is the name of the object as we would report it to the user
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// (e.g., libfoo.a(bar.o) if this is in an archive. INPUT_FILE is
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// used to read the file. OFFSET is the offset within the input
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// file--0 for a .o or .so file, something else for a .a file.
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2009-12-14 20:53:05 +01:00
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Object(const std::string& name, Input_file* input_file, bool is_dynamic,
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off_t offset = 0)
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: name_(name), input_file_(input_file), offset_(offset), shnum_(-1U),
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is_dynamic_(is_dynamic), is_needed_(false), uses_split_stack_(false),
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2011-04-12 02:44:48 +02:00
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has_no_split_stack_(false), no_export_(false),
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2011-05-24 23:57:28 +02:00
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is_in_system_directory_(false), as_needed_(false), xindex_(NULL)
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2011-04-12 02:44:48 +02:00
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{
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if (input_file != NULL)
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{
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input_file->file().add_object();
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this->is_in_system_directory_ = input_file->is_in_system_directory();
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2011-05-24 23:57:28 +02:00
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this->as_needed_ = input_file->options().as_needed();
|
2011-04-12 02:44:48 +02:00
|
|
|
}
|
|
|
|
}
|
2006-08-05 01:10:59 +02:00
|
|
|
|
|
|
|
virtual ~Object()
|
2011-04-12 02:44:48 +02:00
|
|
|
{
|
|
|
|
if (this->input_file_ != NULL)
|
|
|
|
this->input_file_->file().remove_object();
|
|
|
|
}
|
2006-08-05 01:10:59 +02:00
|
|
|
|
2012-08-11 06:41:28 +02:00
|
|
|
// Return the name of the object as we would report it to the user.
|
2006-08-05 01:10:59 +02:00
|
|
|
const std::string&
|
|
|
|
name() const
|
|
|
|
{ return this->name_; }
|
|
|
|
|
2007-10-10 08:33:56 +02:00
|
|
|
// Get the offset into the file.
|
|
|
|
off_t
|
|
|
|
offset() const
|
|
|
|
{ return this->offset_; }
|
|
|
|
|
2006-08-19 00:29:20 +02:00
|
|
|
// Return whether this is a dynamic object.
|
|
|
|
bool
|
|
|
|
is_dynamic() const
|
|
|
|
{ return this->is_dynamic_; }
|
|
|
|
|
2009-11-05 07:24:39 +01:00
|
|
|
// Return whether this object is needed--true if it is a dynamic
|
|
|
|
// object which defines some symbol referenced by a regular object.
|
|
|
|
// We keep the flag here rather than in Dynobj for convenience when
|
|
|
|
// setting it.
|
|
|
|
bool
|
|
|
|
is_needed() const
|
|
|
|
{ return this->is_needed_; }
|
|
|
|
|
|
|
|
// Record that this object is needed.
|
|
|
|
void
|
|
|
|
set_is_needed()
|
|
|
|
{ this->is_needed_ = true; }
|
|
|
|
|
2009-10-07 00:58:27 +02:00
|
|
|
// Return whether this object was compiled with -fsplit-stack.
|
|
|
|
bool
|
|
|
|
uses_split_stack() const
|
|
|
|
{ return this->uses_split_stack_; }
|
|
|
|
|
|
|
|
// Return whether this object contains any functions compiled with
|
|
|
|
// the no_split_stack attribute.
|
|
|
|
bool
|
|
|
|
has_no_split_stack() const
|
|
|
|
{ return this->has_no_split_stack_; }
|
|
|
|
|
2011-05-24 23:57:28 +02:00
|
|
|
// Returns NULL for Objects that are not dynamic objects. This method
|
|
|
|
// is overridden in the Dynobj class.
|
|
|
|
Dynobj*
|
|
|
|
dynobj()
|
|
|
|
{ return this->do_dynobj(); }
|
|
|
|
|
2008-09-20 00:54:57 +02:00
|
|
|
// Returns NULL for Objects that are not plugin objects. This method
|
|
|
|
// is overridden in the Pluginobj class.
|
|
|
|
Pluginobj*
|
|
|
|
pluginobj()
|
|
|
|
{ return this->do_pluginobj(); }
|
|
|
|
|
* readsyms.cc (Read_symbols::incompatible_warning): New function.
(Read_symbols::requeue): New function.
(Read_symbols::do_read_symbols): If make_elf_object fails because
the target type is not configured, and the file was searched for,
issue a warning and retry with the next directory.
(Add_symbols::run): If the file has an incompatible format, and
it was searched for, requeue the Read_symbols task. On error,
release the object.
* readsyms.h (class Read_symbols): Add dirindex_ field. Add
dirindex parameter to constructor. Change all callers. Declare
incompatible_warning and requeue.
(class Add_symbols): Add dirpath_, dirindex_, mapfile_,
input_argument_ and input_group_ fields. Add them to
constructor. Change all callers.
(class Read_script): Add dirindex_ field. Add it to constructor.
Change all callers.
* archive.cc (Archive::setup): Remove input_objects parameter.
Change all callers.
(Archive::get_file_and_offset): Likewise.
(Archive::read_all_symbols): Likewise.
(Archive::read_symbols): Likewise.
(Archive::get_elf_object_for_member): Remove input_objects
parameter. Add punconfigured parameter. Change all callers.
(Archive::add_symbols): Change return type to bool. Check return
value of include_member.
(Archive::include_all_members): Likewise.
(Archive::include_member): Change return type to bool. Return
false if first included object has incompatible target. Set
included_member_ field.
(Add_archive_symbols::run): If add_symbols returns false, requeue
Read_symbols task.
* archive.h (class Archive): Add included_member_ field.
Initialize it in constructor. Add input_file and searched_for
methods. Update declarations.
(class Add_archive_symbols): Add dirpath_, dirindex_, and
input_argument_ fields. Add them to constructor. Change all
callers.
* script.cc: Include "target-select.h".
(class Parser_closure): Add skip_on_incompatible_target_ and
found_incompatible_target_ fields. Add
skip_on_incompatible_target parameter to constructor. Change all
callers. Add methods skip_on_incompatible_target,
clear_skip_on_incompatible_target, found_incompatible_target, and
set_found_incompatible_target.
(read_input_script): Add dirindex parameter. Change all callers.
If parser finds an incompatible target, requeue Read_symbols
task.
(script_set_symbol): Clear skip_on_incompatible_target in
closure.
(script_add_assertion, script_parse_option): Likewise.
(script_start_sections, script_add_phdr): Likewise.
(script_check_output_format): New function.
* script.h (read_input_script): Update declaration.
* script-c.h (script_check_output_format): Declare.
* yyscript.y (file_cmd): Handle OUTPUT_FORMAT.
(ignore_cmd): Remove OUTPUT_FORMAT.
* fileread.cc (Input_file::Input_file): Add explicit this.
(Input_file::will_search_for): New function.
(Input_file::open): Add pindex parameter. Change all callers.
* fileread.h (class Input_file): Add input_file_argument method.
Declare will_search_for. Update declarations.
* object.cc (make_elf_object): Add punconfigured parameter.
Change all callers.
* object.h (class Object): Make input_file public. Add
searched_for method.
(make_elf_object): Update declaration.
* dirsearch.cc (Dirsearch::find): Add pindex parameter. Use it to
restart search.
* dirsearch.h (class Dirsearch): Update declaration.
* options.h (class General_options): Add --warn-search-mismatch.
* parameters.cc (Parameters::is_compatible_target): New function.
* parameters.h (class Parameters): Declare is_compatible_target.
* workqueue.cc (Workqueue::add_blocker): New function.
* workqueue.h (class Workqueue): Declare add_blocker.
2009-03-14 06:56:46 +01:00
|
|
|
// Get the file. We pass on const-ness.
|
|
|
|
Input_file*
|
|
|
|
input_file()
|
2011-04-12 02:44:48 +02:00
|
|
|
{
|
|
|
|
gold_assert(this->input_file_ != NULL);
|
|
|
|
return this->input_file_;
|
|
|
|
}
|
* readsyms.cc (Read_symbols::incompatible_warning): New function.
(Read_symbols::requeue): New function.
(Read_symbols::do_read_symbols): If make_elf_object fails because
the target type is not configured, and the file was searched for,
issue a warning and retry with the next directory.
(Add_symbols::run): If the file has an incompatible format, and
it was searched for, requeue the Read_symbols task. On error,
release the object.
* readsyms.h (class Read_symbols): Add dirindex_ field. Add
dirindex parameter to constructor. Change all callers. Declare
incompatible_warning and requeue.
(class Add_symbols): Add dirpath_, dirindex_, mapfile_,
input_argument_ and input_group_ fields. Add them to
constructor. Change all callers.
(class Read_script): Add dirindex_ field. Add it to constructor.
Change all callers.
* archive.cc (Archive::setup): Remove input_objects parameter.
Change all callers.
(Archive::get_file_and_offset): Likewise.
(Archive::read_all_symbols): Likewise.
(Archive::read_symbols): Likewise.
(Archive::get_elf_object_for_member): Remove input_objects
parameter. Add punconfigured parameter. Change all callers.
(Archive::add_symbols): Change return type to bool. Check return
value of include_member.
(Archive::include_all_members): Likewise.
(Archive::include_member): Change return type to bool. Return
false if first included object has incompatible target. Set
included_member_ field.
(Add_archive_symbols::run): If add_symbols returns false, requeue
Read_symbols task.
* archive.h (class Archive): Add included_member_ field.
Initialize it in constructor. Add input_file and searched_for
methods. Update declarations.
(class Add_archive_symbols): Add dirpath_, dirindex_, and
input_argument_ fields. Add them to constructor. Change all
callers.
* script.cc: Include "target-select.h".
(class Parser_closure): Add skip_on_incompatible_target_ and
found_incompatible_target_ fields. Add
skip_on_incompatible_target parameter to constructor. Change all
callers. Add methods skip_on_incompatible_target,
clear_skip_on_incompatible_target, found_incompatible_target, and
set_found_incompatible_target.
(read_input_script): Add dirindex parameter. Change all callers.
If parser finds an incompatible target, requeue Read_symbols
task.
(script_set_symbol): Clear skip_on_incompatible_target in
closure.
(script_add_assertion, script_parse_option): Likewise.
(script_start_sections, script_add_phdr): Likewise.
(script_check_output_format): New function.
* script.h (read_input_script): Update declaration.
* script-c.h (script_check_output_format): Declare.
* yyscript.y (file_cmd): Handle OUTPUT_FORMAT.
(ignore_cmd): Remove OUTPUT_FORMAT.
* fileread.cc (Input_file::Input_file): Add explicit this.
(Input_file::will_search_for): New function.
(Input_file::open): Add pindex parameter. Change all callers.
* fileread.h (class Input_file): Add input_file_argument method.
Declare will_search_for. Update declarations.
* object.cc (make_elf_object): Add punconfigured parameter.
Change all callers.
* object.h (class Object): Make input_file public. Add
searched_for method.
(make_elf_object): Update declaration.
* dirsearch.cc (Dirsearch::find): Add pindex parameter. Use it to
restart search.
* dirsearch.h (class Dirsearch): Update declaration.
* options.h (class General_options): Add --warn-search-mismatch.
* parameters.cc (Parameters::is_compatible_target): New function.
* parameters.h (class Parameters): Declare is_compatible_target.
* workqueue.cc (Workqueue::add_blocker): New function.
* workqueue.h (class Workqueue): Declare add_blocker.
2009-03-14 06:56:46 +01:00
|
|
|
|
|
|
|
const Input_file*
|
|
|
|
input_file() const
|
2011-04-12 02:44:48 +02:00
|
|
|
{
|
|
|
|
gold_assert(this->input_file_ != NULL);
|
|
|
|
return this->input_file_;
|
|
|
|
}
|
* readsyms.cc (Read_symbols::incompatible_warning): New function.
(Read_symbols::requeue): New function.
(Read_symbols::do_read_symbols): If make_elf_object fails because
the target type is not configured, and the file was searched for,
issue a warning and retry with the next directory.
(Add_symbols::run): If the file has an incompatible format, and
it was searched for, requeue the Read_symbols task. On error,
release the object.
* readsyms.h (class Read_symbols): Add dirindex_ field. Add
dirindex parameter to constructor. Change all callers. Declare
incompatible_warning and requeue.
(class Add_symbols): Add dirpath_, dirindex_, mapfile_,
input_argument_ and input_group_ fields. Add them to
constructor. Change all callers.
(class Read_script): Add dirindex_ field. Add it to constructor.
Change all callers.
* archive.cc (Archive::setup): Remove input_objects parameter.
Change all callers.
(Archive::get_file_and_offset): Likewise.
(Archive::read_all_symbols): Likewise.
(Archive::read_symbols): Likewise.
(Archive::get_elf_object_for_member): Remove input_objects
parameter. Add punconfigured parameter. Change all callers.
(Archive::add_symbols): Change return type to bool. Check return
value of include_member.
(Archive::include_all_members): Likewise.
(Archive::include_member): Change return type to bool. Return
false if first included object has incompatible target. Set
included_member_ field.
(Add_archive_symbols::run): If add_symbols returns false, requeue
Read_symbols task.
* archive.h (class Archive): Add included_member_ field.
Initialize it in constructor. Add input_file and searched_for
methods. Update declarations.
(class Add_archive_symbols): Add dirpath_, dirindex_, and
input_argument_ fields. Add them to constructor. Change all
callers.
* script.cc: Include "target-select.h".
(class Parser_closure): Add skip_on_incompatible_target_ and
found_incompatible_target_ fields. Add
skip_on_incompatible_target parameter to constructor. Change all
callers. Add methods skip_on_incompatible_target,
clear_skip_on_incompatible_target, found_incompatible_target, and
set_found_incompatible_target.
(read_input_script): Add dirindex parameter. Change all callers.
If parser finds an incompatible target, requeue Read_symbols
task.
(script_set_symbol): Clear skip_on_incompatible_target in
closure.
(script_add_assertion, script_parse_option): Likewise.
(script_start_sections, script_add_phdr): Likewise.
(script_check_output_format): New function.
* script.h (read_input_script): Update declaration.
* script-c.h (script_check_output_format): Declare.
* yyscript.y (file_cmd): Handle OUTPUT_FORMAT.
(ignore_cmd): Remove OUTPUT_FORMAT.
* fileread.cc (Input_file::Input_file): Add explicit this.
(Input_file::will_search_for): New function.
(Input_file::open): Add pindex parameter. Change all callers.
* fileread.h (class Input_file): Add input_file_argument method.
Declare will_search_for. Update declarations.
* object.cc (make_elf_object): Add punconfigured parameter.
Change all callers.
* object.h (class Object): Make input_file public. Add
searched_for method.
(make_elf_object): Update declaration.
* dirsearch.cc (Dirsearch::find): Add pindex parameter. Use it to
restart search.
* dirsearch.h (class Dirsearch): Update declaration.
* options.h (class General_options): Add --warn-search-mismatch.
* parameters.cc (Parameters::is_compatible_target): New function.
* parameters.h (class Parameters): Declare is_compatible_target.
* workqueue.cc (Workqueue::add_blocker): New function.
* workqueue.h (class Workqueue): Declare add_blocker.
2009-03-14 06:56:46 +01:00
|
|
|
|
2006-09-22 00:13:18 +02:00
|
|
|
// Lock the underlying file.
|
|
|
|
void
|
2007-12-14 20:00:21 +01:00
|
|
|
lock(const Task* t)
|
2011-04-12 02:44:48 +02:00
|
|
|
{
|
|
|
|
if (this->input_file_ != NULL)
|
|
|
|
this->input_file_->file().lock(t);
|
|
|
|
}
|
2006-09-22 00:13:18 +02:00
|
|
|
|
|
|
|
// Unlock the underlying file.
|
|
|
|
void
|
2007-12-14 20:00:21 +01:00
|
|
|
unlock(const Task* t)
|
2011-04-12 02:44:48 +02:00
|
|
|
{
|
|
|
|
if (this->input_file_ != NULL)
|
|
|
|
this->input_file()->file().unlock(t);
|
|
|
|
}
|
2006-09-22 00:13:18 +02:00
|
|
|
|
|
|
|
// Return whether the underlying file is locked.
|
|
|
|
bool
|
|
|
|
is_locked() const
|
2011-04-12 02:44:48 +02:00
|
|
|
{ return this->input_file_ != NULL && this->input_file_->file().is_locked(); }
|
2006-09-22 00:13:18 +02:00
|
|
|
|
2007-12-14 20:00:21 +01:00
|
|
|
// Return the token, so that the task can be queued.
|
|
|
|
Task_token*
|
|
|
|
token()
|
2011-04-12 02:44:48 +02:00
|
|
|
{
|
|
|
|
if (this->input_file_ == NULL)
|
|
|
|
return NULL;
|
|
|
|
return this->input_file()->file().token();
|
|
|
|
}
|
2007-12-14 20:00:21 +01:00
|
|
|
|
|
|
|
// Release the underlying file.
|
|
|
|
void
|
|
|
|
release()
|
2011-04-12 02:44:48 +02:00
|
|
|
{
|
|
|
|
if (this->input_file_ != NULL)
|
|
|
|
this->input_file()->file().release();
|
|
|
|
}
|
2007-12-14 20:00:21 +01:00
|
|
|
|
2008-02-07 02:51:25 +01:00
|
|
|
// Return whether we should just read symbols from this file.
|
|
|
|
bool
|
|
|
|
just_symbols() const
|
|
|
|
{ return this->input_file()->just_symbols(); }
|
|
|
|
|
2011-04-12 02:44:48 +02:00
|
|
|
// Return whether this is an incremental object.
|
|
|
|
bool
|
|
|
|
is_incremental() const
|
|
|
|
{ return this->do_is_incremental(); }
|
|
|
|
|
|
|
|
// Return the last modified time of the file.
|
|
|
|
Timespec
|
|
|
|
get_mtime()
|
|
|
|
{ return this->do_get_mtime(); }
|
|
|
|
|
2006-12-01 00:52:50 +01:00
|
|
|
// Get the number of sections.
|
|
|
|
unsigned int
|
|
|
|
shnum() const
|
|
|
|
{ return this->shnum_; }
|
2006-09-22 00:13:18 +02:00
|
|
|
|
2006-11-06 23:46:08 +01:00
|
|
|
// Return a view of the contents of a section. Set *PLEN to the
|
2007-09-25 19:50:26 +02:00
|
|
|
// size. CACHE is a hint as in File_read::get_view.
|
2006-11-06 23:46:08 +01:00
|
|
|
const unsigned char*
|
2007-12-18 01:48:04 +01:00
|
|
|
section_contents(unsigned int shndx, section_size_type* plen, bool cache);
|
2006-11-06 23:46:08 +01:00
|
|
|
|
2008-04-19 20:30:58 +02:00
|
|
|
// Adjust a symbol's section index as needed. SYMNDX is the index
|
|
|
|
// of the symbol and SHNDX is the symbol's section from
|
|
|
|
// get_st_shndx. This returns the section index. It sets
|
|
|
|
// *IS_ORDINARY to indicate whether this is a normal section index,
|
|
|
|
// rather than a special code between SHN_LORESERVE and
|
|
|
|
// SHN_HIRESERVE.
|
|
|
|
unsigned int
|
|
|
|
adjust_sym_shndx(unsigned int symndx, unsigned int shndx, bool* is_ordinary)
|
|
|
|
{
|
|
|
|
if (shndx < elfcpp::SHN_LORESERVE)
|
|
|
|
*is_ordinary = true;
|
|
|
|
else if (shndx == elfcpp::SHN_XINDEX)
|
|
|
|
{
|
|
|
|
if (this->xindex_ == NULL)
|
|
|
|
this->xindex_ = this->do_initialize_xindex();
|
|
|
|
shndx = this->xindex_->sym_xindex_to_shndx(this, symndx);
|
|
|
|
*is_ordinary = true;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
*is_ordinary = false;
|
|
|
|
return shndx;
|
|
|
|
}
|
|
|
|
|
2008-02-04 06:43:05 +01:00
|
|
|
// Return the size of a section given a section index.
|
|
|
|
uint64_t
|
|
|
|
section_size(unsigned int shndx)
|
|
|
|
{ return this->do_section_size(shndx); }
|
|
|
|
|
|
|
|
// Return the name of a section given a section index.
|
2006-11-06 23:46:08 +01:00
|
|
|
std::string
|
2006-11-29 18:56:40 +01:00
|
|
|
section_name(unsigned int shndx)
|
|
|
|
{ return this->do_section_name(shndx); }
|
|
|
|
|
|
|
|
// Return the section flags given a section index.
|
|
|
|
uint64_t
|
|
|
|
section_flags(unsigned int shndx)
|
|
|
|
{ return this->do_section_flags(shndx); }
|
2006-11-06 23:46:08 +01:00
|
|
|
|
2009-08-05 22:51:56 +02:00
|
|
|
// Return the section entsize given a section index.
|
|
|
|
uint64_t
|
|
|
|
section_entsize(unsigned int shndx)
|
|
|
|
{ return this->do_section_entsize(shndx); }
|
|
|
|
|
2008-02-07 02:51:25 +01:00
|
|
|
// Return the section address given a section index.
|
|
|
|
uint64_t
|
|
|
|
section_address(unsigned int shndx)
|
|
|
|
{ return this->do_section_address(shndx); }
|
|
|
|
|
2007-11-09 08:00:15 +01:00
|
|
|
// Return the section type given a section index.
|
|
|
|
unsigned int
|
|
|
|
section_type(unsigned int shndx)
|
|
|
|
{ return this->do_section_type(shndx); }
|
|
|
|
|
2007-11-02 04:28:52 +01:00
|
|
|
// Return the section link field given a section index.
|
|
|
|
unsigned int
|
|
|
|
section_link(unsigned int shndx)
|
|
|
|
{ return this->do_section_link(shndx); }
|
|
|
|
|
2007-11-10 00:16:54 +01:00
|
|
|
// Return the section info field given a section index.
|
|
|
|
unsigned int
|
|
|
|
section_info(unsigned int shndx)
|
|
|
|
{ return this->do_section_info(shndx); }
|
|
|
|
|
2008-02-04 06:43:05 +01:00
|
|
|
// Return the required section alignment given a section index.
|
|
|
|
uint64_t
|
|
|
|
section_addralign(unsigned int shndx)
|
|
|
|
{ return this->do_section_addralign(shndx); }
|
|
|
|
|
2010-08-13 00:01:11 +02:00
|
|
|
// Return the output section given a section index.
|
|
|
|
Output_section*
|
|
|
|
output_section(unsigned int shndx) const
|
|
|
|
{ return this->do_output_section(shndx); }
|
|
|
|
|
|
|
|
// Given a section index, return the offset in the Output_section.
|
|
|
|
// The return value will be -1U if the section is specially mapped,
|
|
|
|
// such as a merge section.
|
|
|
|
uint64_t
|
|
|
|
output_section_offset(unsigned int shndx) const
|
|
|
|
{ return this->do_output_section_offset(shndx); }
|
|
|
|
|
2006-12-01 00:52:50 +01:00
|
|
|
// Read the symbol information.
|
|
|
|
void
|
|
|
|
read_symbols(Read_symbols_data* sd)
|
|
|
|
{ return this->do_read_symbols(sd); }
|
|
|
|
|
|
|
|
// Pass sections which should be included in the link to the Layout
|
|
|
|
// object, and record where the sections go in the output file.
|
|
|
|
void
|
2009-12-14 20:53:05 +01:00
|
|
|
layout(Symbol_table* symtab, Layout* layout, Read_symbols_data* sd)
|
|
|
|
{ this->do_layout(symtab, layout, sd); }
|
2006-12-01 00:52:50 +01:00
|
|
|
|
|
|
|
// Add symbol information to the global symbol table.
|
|
|
|
void
|
2009-12-14 20:53:05 +01:00
|
|
|
add_symbols(Symbol_table* symtab, Read_symbols_data* sd, Layout *layout)
|
|
|
|
{ this->do_add_symbols(symtab, sd, layout); }
|
2006-12-01 00:52:50 +01:00
|
|
|
|
2010-03-22 15:18:24 +01:00
|
|
|
// Add symbol information to the global symbol table.
|
|
|
|
Archive::Should_include
|
2010-08-02 15:34:33 +02:00
|
|
|
should_include_member(Symbol_table* symtab, Layout* layout,
|
|
|
|
Read_symbols_data* sd, std::string* why)
|
|
|
|
{ return this->do_should_include_member(symtab, layout, sd, why); }
|
2010-03-22 15:18:24 +01:00
|
|
|
|
2011-03-30 03:31:57 +02:00
|
|
|
// Iterate over global symbols, calling a visitor class V for each.
|
|
|
|
void
|
|
|
|
for_all_global_symbols(Read_symbols_data* sd,
|
|
|
|
Library_base::Symbol_visitor_base* v)
|
|
|
|
{ return this->do_for_all_global_symbols(sd, v); }
|
|
|
|
|
2011-04-12 02:44:48 +02:00
|
|
|
// Iterate over local symbols, calling a visitor class V for each GOT offset
|
|
|
|
// associated with a local symbol.
|
|
|
|
void
|
|
|
|
for_all_local_got_entries(Got_offset_list::Visitor* v) const
|
|
|
|
{ this->do_for_all_local_got_entries(v); }
|
|
|
|
|
2006-11-07 19:51:39 +01:00
|
|
|
// Functions and types for the elfcpp::Elf_file interface. This
|
|
|
|
// permit us to use Object as the File template parameter for
|
|
|
|
// elfcpp::Elf_file.
|
|
|
|
|
|
|
|
// The View class is returned by view. It must support a single
|
|
|
|
// method, data(). This is trivial, because get_view does what we
|
|
|
|
// need.
|
|
|
|
class View
|
|
|
|
{
|
|
|
|
public:
|
|
|
|
View(const unsigned char* p)
|
|
|
|
: p_(p)
|
|
|
|
{ }
|
|
|
|
|
|
|
|
const unsigned char*
|
|
|
|
data() const
|
|
|
|
{ return this->p_; }
|
|
|
|
|
|
|
|
private:
|
|
|
|
const unsigned char* p_;
|
|
|
|
};
|
|
|
|
|
|
|
|
// Return a View.
|
|
|
|
View
|
2007-12-18 01:48:04 +01:00
|
|
|
view(off_t file_offset, section_size_type data_size)
|
2008-04-02 22:58:21 +02:00
|
|
|
{ return View(this->get_view(file_offset, data_size, true, true)); }
|
2006-11-07 19:51:39 +01:00
|
|
|
|
|
|
|
// Report an error.
|
|
|
|
void
|
2007-10-14 08:49:14 +02:00
|
|
|
error(const char* format, ...) const ATTRIBUTE_PRINTF_2;
|
2006-11-07 19:51:39 +01:00
|
|
|
|
|
|
|
// A location in the file.
|
|
|
|
struct Location
|
|
|
|
{
|
|
|
|
off_t file_offset;
|
|
|
|
off_t data_size;
|
|
|
|
|
2007-12-18 01:48:04 +01:00
|
|
|
Location(off_t fo, section_size_type ds)
|
2006-11-07 19:51:39 +01:00
|
|
|
: file_offset(fo), data_size(ds)
|
|
|
|
{ }
|
|
|
|
};
|
|
|
|
|
|
|
|
// Get a View given a Location.
|
|
|
|
View view(Location loc)
|
2008-04-02 22:58:21 +02:00
|
|
|
{ return View(this->get_view(loc.file_offset, loc.data_size, true, true)); }
|
2006-11-07 19:51:39 +01:00
|
|
|
|
2008-01-03 00:48:49 +01:00
|
|
|
// Get a view into the underlying file.
|
|
|
|
const unsigned char*
|
2008-04-02 22:58:21 +02:00
|
|
|
get_view(off_t start, section_size_type size, bool aligned, bool cache)
|
2008-01-03 00:48:49 +01:00
|
|
|
{
|
2008-04-02 22:58:21 +02:00
|
|
|
return this->input_file()->file().get_view(this->offset_, start, size,
|
|
|
|
aligned, cache);
|
2008-01-03 00:48:49 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
// Get a lasting view into the underlying file.
|
|
|
|
File_view*
|
2008-04-02 22:58:21 +02:00
|
|
|
get_lasting_view(off_t start, section_size_type size, bool aligned,
|
|
|
|
bool cache)
|
2008-01-03 00:48:49 +01:00
|
|
|
{
|
2008-04-02 22:58:21 +02:00
|
|
|
return this->input_file()->file().get_lasting_view(this->offset_, start,
|
|
|
|
size, aligned, cache);
|
2008-01-03 00:48:49 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
// Read data from the underlying file.
|
|
|
|
void
|
2008-07-25 06:25:49 +02:00
|
|
|
read(off_t start, section_size_type size, void* p)
|
2008-01-03 00:48:49 +01:00
|
|
|
{ this->input_file()->file().read(start + this->offset_, size, p); }
|
|
|
|
|
|
|
|
// Read multiple data from the underlying file.
|
|
|
|
void
|
|
|
|
read_multiple(const File_read::Read_multiple& rm)
|
|
|
|
{ this->input_file()->file().read_multiple(this->offset_, rm); }
|
|
|
|
|
|
|
|
// Stop caching views in the underlying file.
|
|
|
|
void
|
|
|
|
clear_view_cache_marks()
|
2011-04-12 02:44:48 +02:00
|
|
|
{
|
|
|
|
if (this->input_file_ != NULL)
|
|
|
|
this->input_file_->file().clear_view_cache_marks();
|
|
|
|
}
|
2008-01-03 00:48:49 +01:00
|
|
|
|
2008-07-23 00:08:43 +02:00
|
|
|
// Get the number of global symbols defined by this object, and the
|
|
|
|
// number of the symbols whose final definition came from this
|
|
|
|
// object.
|
|
|
|
void
|
|
|
|
get_global_symbol_counts(const Symbol_table* symtab, size_t* defined,
|
|
|
|
size_t* used) const
|
|
|
|
{ this->do_get_global_symbol_counts(symtab, defined, used); }
|
|
|
|
|
2010-01-05 22:52:51 +01:00
|
|
|
// Get the symbols defined in this object.
|
|
|
|
const Symbols*
|
|
|
|
get_global_symbols() const
|
|
|
|
{ return this->do_get_global_symbols(); }
|
|
|
|
|
2011-04-12 02:44:48 +02:00
|
|
|
// Set flag that this object was found in a system directory.
|
|
|
|
void
|
|
|
|
set_is_in_system_directory()
|
|
|
|
{ this->is_in_system_directory_ = true; }
|
|
|
|
|
2009-02-28 05:39:57 +01:00
|
|
|
// Return whether this object was found in a system directory.
|
|
|
|
bool
|
|
|
|
is_in_system_directory() const
|
2011-04-12 02:44:48 +02:00
|
|
|
{ return this->is_in_system_directory_; }
|
2009-02-28 05:39:57 +01:00
|
|
|
|
2011-05-24 23:57:28 +02:00
|
|
|
// Set flag that this object was linked with --as-needed.
|
|
|
|
void
|
|
|
|
set_as_needed()
|
|
|
|
{ this->as_needed_ = true; }
|
|
|
|
|
|
|
|
// Return whether this object was linked with --as-needed.
|
|
|
|
bool
|
|
|
|
as_needed() const
|
|
|
|
{ return this->as_needed_; }
|
|
|
|
|
* readsyms.cc (Read_symbols::incompatible_warning): New function.
(Read_symbols::requeue): New function.
(Read_symbols::do_read_symbols): If make_elf_object fails because
the target type is not configured, and the file was searched for,
issue a warning and retry with the next directory.
(Add_symbols::run): If the file has an incompatible format, and
it was searched for, requeue the Read_symbols task. On error,
release the object.
* readsyms.h (class Read_symbols): Add dirindex_ field. Add
dirindex parameter to constructor. Change all callers. Declare
incompatible_warning and requeue.
(class Add_symbols): Add dirpath_, dirindex_, mapfile_,
input_argument_ and input_group_ fields. Add them to
constructor. Change all callers.
(class Read_script): Add dirindex_ field. Add it to constructor.
Change all callers.
* archive.cc (Archive::setup): Remove input_objects parameter.
Change all callers.
(Archive::get_file_and_offset): Likewise.
(Archive::read_all_symbols): Likewise.
(Archive::read_symbols): Likewise.
(Archive::get_elf_object_for_member): Remove input_objects
parameter. Add punconfigured parameter. Change all callers.
(Archive::add_symbols): Change return type to bool. Check return
value of include_member.
(Archive::include_all_members): Likewise.
(Archive::include_member): Change return type to bool. Return
false if first included object has incompatible target. Set
included_member_ field.
(Add_archive_symbols::run): If add_symbols returns false, requeue
Read_symbols task.
* archive.h (class Archive): Add included_member_ field.
Initialize it in constructor. Add input_file and searched_for
methods. Update declarations.
(class Add_archive_symbols): Add dirpath_, dirindex_, and
input_argument_ fields. Add them to constructor. Change all
callers.
* script.cc: Include "target-select.h".
(class Parser_closure): Add skip_on_incompatible_target_ and
found_incompatible_target_ fields. Add
skip_on_incompatible_target parameter to constructor. Change all
callers. Add methods skip_on_incompatible_target,
clear_skip_on_incompatible_target, found_incompatible_target, and
set_found_incompatible_target.
(read_input_script): Add dirindex parameter. Change all callers.
If parser finds an incompatible target, requeue Read_symbols
task.
(script_set_symbol): Clear skip_on_incompatible_target in
closure.
(script_add_assertion, script_parse_option): Likewise.
(script_start_sections, script_add_phdr): Likewise.
(script_check_output_format): New function.
* script.h (read_input_script): Update declaration.
* script-c.h (script_check_output_format): Declare.
* yyscript.y (file_cmd): Handle OUTPUT_FORMAT.
(ignore_cmd): Remove OUTPUT_FORMAT.
* fileread.cc (Input_file::Input_file): Add explicit this.
(Input_file::will_search_for): New function.
(Input_file::open): Add pindex parameter. Change all callers.
* fileread.h (class Input_file): Add input_file_argument method.
Declare will_search_for. Update declarations.
* object.cc (make_elf_object): Add punconfigured parameter.
Change all callers.
* object.h (class Object): Make input_file public. Add
searched_for method.
(make_elf_object): Update declaration.
* dirsearch.cc (Dirsearch::find): Add pindex parameter. Use it to
restart search.
* dirsearch.h (class Dirsearch): Update declaration.
* options.h (class General_options): Add --warn-search-mismatch.
* parameters.cc (Parameters::is_compatible_target): New function.
* parameters.h (class Parameters): Declare is_compatible_target.
* workqueue.cc (Workqueue::add_blocker): New function.
* workqueue.h (class Workqueue): Declare add_blocker.
2009-03-14 06:56:46 +01:00
|
|
|
// Return whether we found this object by searching a directory.
|
|
|
|
bool
|
|
|
|
searched_for() const
|
|
|
|
{ return this->input_file()->will_search_for(); }
|
|
|
|
|
2009-05-20 00:14:17 +02:00
|
|
|
bool
|
|
|
|
no_export() const
|
|
|
|
{ return this->no_export_; }
|
|
|
|
|
|
|
|
void
|
|
|
|
set_no_export(bool value)
|
|
|
|
{ this->no_export_ = value; }
|
|
|
|
|
2010-07-12 19:59:58 +02:00
|
|
|
// Return TRUE if the section is a compressed debug section, and set
|
|
|
|
// *UNCOMPRESSED_SIZE to the size of the uncompressed data.
|
|
|
|
bool
|
|
|
|
section_is_compressed(unsigned int shndx,
|
|
|
|
section_size_type* uncompressed_size) const
|
|
|
|
{ return this->do_section_is_compressed(shndx, uncompressed_size); }
|
|
|
|
|
2012-03-21 20:02:22 +01:00
|
|
|
// Return a view of the decompressed contents of a section. Set *PLEN
|
2012-02-29 22:22:29 +01:00
|
|
|
// to the size. Set *IS_NEW to true if the contents need to be freed
|
|
|
|
// by the caller.
|
|
|
|
const unsigned char*
|
|
|
|
decompressed_section_contents(unsigned int shndx, section_size_type* plen,
|
|
|
|
bool* is_cached)
|
|
|
|
{ return this->do_decompressed_section_contents(shndx, plen, is_cached); }
|
|
|
|
|
|
|
|
// Discard any buffers of decompressed sections. This is done
|
|
|
|
// at the end of the Add_symbols task.
|
|
|
|
void
|
|
|
|
discard_decompressed_sections()
|
|
|
|
{ this->do_discard_decompressed_sections(); }
|
|
|
|
|
2010-08-13 00:01:11 +02:00
|
|
|
// Return the index of the first incremental relocation for symbol SYMNDX.
|
|
|
|
unsigned int
|
|
|
|
get_incremental_reloc_base(unsigned int symndx) const
|
|
|
|
{ return this->do_get_incremental_reloc_base(symndx); }
|
|
|
|
|
|
|
|
// Return the number of incremental relocations for symbol SYMNDX.
|
|
|
|
unsigned int
|
|
|
|
get_incremental_reloc_count(unsigned int symndx) const
|
|
|
|
{ return this->do_get_incremental_reloc_count(symndx); }
|
|
|
|
|
2006-11-06 23:46:08 +01:00
|
|
|
protected:
|
2011-05-24 23:57:28 +02:00
|
|
|
// Returns NULL for Objects that are not dynamic objects. This method
|
|
|
|
// is overridden in the Dynobj class.
|
|
|
|
virtual Dynobj*
|
|
|
|
do_dynobj()
|
|
|
|
{ return NULL; }
|
|
|
|
|
2008-09-20 00:54:57 +02:00
|
|
|
// Returns NULL for Objects that are not plugin objects. This method
|
|
|
|
// is overridden in the Pluginobj class.
|
|
|
|
virtual Pluginobj*
|
|
|
|
do_pluginobj()
|
|
|
|
{ return NULL; }
|
|
|
|
|
2011-04-12 02:44:48 +02:00
|
|
|
// Return TRUE if this is an incremental (unchanged) input file.
|
|
|
|
// We return FALSE by default; the incremental object classes
|
|
|
|
// override this method.
|
|
|
|
virtual bool
|
|
|
|
do_is_incremental() const
|
|
|
|
{ return false; }
|
|
|
|
|
|
|
|
// Return the last modified time of the file. This method may be
|
|
|
|
// overridden for subclasses that don't use an actual file (e.g.,
|
|
|
|
// Incremental objects).
|
|
|
|
virtual Timespec
|
|
|
|
do_get_mtime()
|
|
|
|
{ return this->input_file()->file().get_mtime(); }
|
|
|
|
|
2006-11-06 23:46:08 +01:00
|
|
|
// Read the symbols--implemented by child class.
|
|
|
|
virtual void
|
|
|
|
do_read_symbols(Read_symbols_data*) = 0;
|
|
|
|
|
|
|
|
// Lay out sections--implemented by child class.
|
|
|
|
virtual void
|
2007-09-21 09:20:01 +02:00
|
|
|
do_layout(Symbol_table*, Layout*, Read_symbols_data*) = 0;
|
2006-11-06 23:46:08 +01:00
|
|
|
|
|
|
|
// Add symbol information to the global symbol table--implemented by
|
|
|
|
// child class.
|
|
|
|
virtual void
|
2009-02-13 20:04:45 +01:00
|
|
|
do_add_symbols(Symbol_table*, Read_symbols_data*, Layout*) = 0;
|
2006-11-06 23:46:08 +01:00
|
|
|
|
2010-03-22 15:18:24 +01:00
|
|
|
virtual Archive::Should_include
|
2010-08-02 15:34:33 +02:00
|
|
|
do_should_include_member(Symbol_table* symtab, Layout*, Read_symbols_data*,
|
2010-03-22 15:18:24 +01:00
|
|
|
std::string* why) = 0;
|
|
|
|
|
2011-03-30 03:31:57 +02:00
|
|
|
// Iterate over global symbols, calling a visitor class V for each.
|
|
|
|
virtual void
|
|
|
|
do_for_all_global_symbols(Read_symbols_data* sd,
|
|
|
|
Library_base::Symbol_visitor_base* v) = 0;
|
|
|
|
|
2011-04-12 02:44:48 +02:00
|
|
|
// Iterate over local symbols, calling a visitor class V for each GOT offset
|
|
|
|
// associated with a local symbol.
|
|
|
|
virtual void
|
|
|
|
do_for_all_local_got_entries(Got_offset_list::Visitor* v) const = 0;
|
|
|
|
|
2006-11-07 19:51:39 +01:00
|
|
|
// Return the location of the contents of a section. Implemented by
|
|
|
|
// child class.
|
2012-03-21 20:02:22 +01:00
|
|
|
virtual const unsigned char*
|
|
|
|
do_section_contents(unsigned int shndx, section_size_type* plen,
|
|
|
|
bool cache) = 0;
|
2006-11-06 23:46:08 +01:00
|
|
|
|
2008-02-04 06:43:05 +01:00
|
|
|
// Get the size of a section--implemented by child class.
|
|
|
|
virtual uint64_t
|
|
|
|
do_section_size(unsigned int shndx) = 0;
|
|
|
|
|
2006-11-06 23:46:08 +01:00
|
|
|
// Get the name of a section--implemented by child class.
|
|
|
|
virtual std::string
|
2006-11-29 18:56:40 +01:00
|
|
|
do_section_name(unsigned int shndx) = 0;
|
|
|
|
|
|
|
|
// Get section flags--implemented by child class.
|
|
|
|
virtual uint64_t
|
|
|
|
do_section_flags(unsigned int shndx) = 0;
|
2006-11-06 23:46:08 +01:00
|
|
|
|
2009-08-05 22:51:56 +02:00
|
|
|
// Get section entsize--implemented by child class.
|
|
|
|
virtual uint64_t
|
|
|
|
do_section_entsize(unsigned int shndx) = 0;
|
|
|
|
|
2008-02-07 02:51:25 +01:00
|
|
|
// Get section address--implemented by child class.
|
|
|
|
virtual uint64_t
|
|
|
|
do_section_address(unsigned int shndx) = 0;
|
|
|
|
|
2007-11-09 08:00:15 +01:00
|
|
|
// Get section type--implemented by child class.
|
|
|
|
virtual unsigned int
|
|
|
|
do_section_type(unsigned int shndx) = 0;
|
|
|
|
|
2007-11-02 04:28:52 +01:00
|
|
|
// Get section link field--implemented by child class.
|
|
|
|
virtual unsigned int
|
|
|
|
do_section_link(unsigned int shndx) = 0;
|
|
|
|
|
2007-11-10 00:16:54 +01:00
|
|
|
// Get section info field--implemented by child class.
|
|
|
|
virtual unsigned int
|
|
|
|
do_section_info(unsigned int shndx) = 0;
|
|
|
|
|
2008-02-04 06:43:05 +01:00
|
|
|
// Get section alignment--implemented by child class.
|
|
|
|
virtual uint64_t
|
|
|
|
do_section_addralign(unsigned int shndx) = 0;
|
|
|
|
|
2010-08-13 00:01:11 +02:00
|
|
|
// Return the output section given a section index--implemented
|
|
|
|
// by child class.
|
|
|
|
virtual Output_section*
|
|
|
|
do_output_section(unsigned int) const
|
|
|
|
{ gold_unreachable(); }
|
|
|
|
|
|
|
|
// Get the offset of a section--implemented by child class.
|
|
|
|
virtual uint64_t
|
|
|
|
do_output_section_offset(unsigned int) const
|
|
|
|
{ gold_unreachable(); }
|
|
|
|
|
2008-04-19 20:30:58 +02:00
|
|
|
// Return the Xindex structure to use.
|
|
|
|
virtual Xindex*
|
|
|
|
do_initialize_xindex() = 0;
|
|
|
|
|
2008-07-23 00:08:43 +02:00
|
|
|
// Implement get_global_symbol_counts--implemented by child class.
|
|
|
|
virtual void
|
|
|
|
do_get_global_symbol_counts(const Symbol_table*, size_t*, size_t*) const = 0;
|
|
|
|
|
2010-01-05 22:52:51 +01:00
|
|
|
virtual const Symbols*
|
|
|
|
do_get_global_symbols() const = 0;
|
|
|
|
|
2006-11-14 20:21:05 +01:00
|
|
|
// Set the number of sections.
|
|
|
|
void
|
2009-12-14 20:53:05 +01:00
|
|
|
set_shnum(int shnum)
|
|
|
|
{ this->shnum_ = shnum; }
|
2006-11-14 20:21:05 +01:00
|
|
|
|
2011-05-24 23:41:10 +02:00
|
|
|
// Functions used by both Sized_relobj_file and Sized_dynobj.
|
2006-11-14 20:21:05 +01:00
|
|
|
|
|
|
|
// Read the section data into a Read_symbols_data object.
|
|
|
|
template<int size, bool big_endian>
|
|
|
|
void
|
|
|
|
read_section_data(elfcpp::Elf_file<size, big_endian, Object>*,
|
|
|
|
Read_symbols_data*);
|
|
|
|
|
2013-03-11 00:08:18 +01:00
|
|
|
// Find the section header with the given NAME. If HDR is non-NULL
|
|
|
|
// then it is a section header returned from a previous call to this
|
|
|
|
// function and the next section header with the same name will be
|
|
|
|
// returned.
|
|
|
|
template<int size, bool big_endian>
|
|
|
|
const unsigned char*
|
|
|
|
find_shdr(const unsigned char* pshdrs, const char* name,
|
|
|
|
const char* names, section_size_type names_size,
|
|
|
|
const unsigned char* hdr) const;
|
|
|
|
|
2008-04-19 20:30:58 +02:00
|
|
|
// Let the child class initialize the xindex object directly.
|
|
|
|
void
|
|
|
|
set_xindex(Xindex* xindex)
|
|
|
|
{
|
|
|
|
gold_assert(this->xindex_ == NULL);
|
|
|
|
this->xindex_ = xindex;
|
|
|
|
}
|
|
|
|
|
2006-11-14 20:21:05 +01:00
|
|
|
// If NAME is the name of a special .gnu.warning section, arrange
|
|
|
|
// for the warning to be issued. SHNDX is the section index.
|
|
|
|
// Return whether it is a warning section.
|
|
|
|
bool
|
|
|
|
handle_gnu_warning_section(const char* name, unsigned int shndx,
|
|
|
|
Symbol_table*);
|
2006-11-06 23:46:08 +01:00
|
|
|
|
2009-10-07 00:58:27 +02:00
|
|
|
// If NAME is the name of the special section which indicates that
|
2010-12-14 20:03:30 +01:00
|
|
|
// this object was compiled with -fsplit-stack, mark it accordingly,
|
2009-10-07 00:58:27 +02:00
|
|
|
// and return true. Otherwise return false.
|
|
|
|
bool
|
|
|
|
handle_split_stack_section(const char* name);
|
|
|
|
|
2010-07-12 19:59:58 +02:00
|
|
|
// Return TRUE if the section is a compressed debug section, and set
|
|
|
|
// *UNCOMPRESSED_SIZE to the size of the uncompressed data.
|
|
|
|
virtual bool
|
|
|
|
do_section_is_compressed(unsigned int, section_size_type*) const
|
|
|
|
{ return false; }
|
|
|
|
|
2012-02-29 22:22:29 +01:00
|
|
|
// Return a view of the decompressed contents of a section. Set *PLEN
|
|
|
|
// to the size. This default implementation simply returns the
|
|
|
|
// raw section contents and sets *IS_NEW to false to indicate
|
|
|
|
// that the contents do not need to be freed by the caller.
|
|
|
|
// This function must be overridden for any types of object files
|
|
|
|
// that might contain compressed sections.
|
|
|
|
virtual const unsigned char*
|
|
|
|
do_decompressed_section_contents(unsigned int shndx,
|
|
|
|
section_size_type* plen,
|
|
|
|
bool* is_new)
|
|
|
|
{
|
|
|
|
*is_new = false;
|
2012-03-21 20:02:22 +01:00
|
|
|
return this->do_section_contents(shndx, plen, false);
|
2012-02-29 22:22:29 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
// Discard any buffers of decompressed sections. This is done
|
|
|
|
// at the end of the Add_symbols task.
|
|
|
|
virtual void
|
|
|
|
do_discard_decompressed_sections()
|
|
|
|
{ }
|
|
|
|
|
2010-08-13 00:01:11 +02:00
|
|
|
// Return the index of the first incremental relocation for symbol SYMNDX--
|
|
|
|
// implemented by child class.
|
|
|
|
virtual unsigned int
|
|
|
|
do_get_incremental_reloc_base(unsigned int) const
|
|
|
|
{ gold_unreachable(); }
|
|
|
|
|
|
|
|
// Return the number of incremental relocations for symbol SYMNDX--
|
|
|
|
// implemented by child class.
|
|
|
|
virtual unsigned int
|
|
|
|
do_get_incremental_reloc_count(unsigned int) const
|
|
|
|
{ gold_unreachable(); }
|
|
|
|
|
2006-11-06 23:46:08 +01:00
|
|
|
private:
|
|
|
|
// This class may not be copied.
|
|
|
|
Object(const Object&);
|
|
|
|
Object& operator=(const Object&);
|
|
|
|
|
|
|
|
// Name of object as printed to user.
|
|
|
|
std::string name_;
|
|
|
|
// For reading the file.
|
|
|
|
Input_file* input_file_;
|
|
|
|
// Offset within the file--0 for an object file, non-0 for an
|
|
|
|
// archive.
|
|
|
|
off_t offset_;
|
2006-11-14 20:21:05 +01:00
|
|
|
// Number of input sections.
|
|
|
|
unsigned int shnum_;
|
2006-11-06 23:46:08 +01:00
|
|
|
// Whether this is a dynamic object.
|
2009-11-05 07:24:39 +01:00
|
|
|
bool is_dynamic_ : 1;
|
|
|
|
// Whether this object is needed. This is only set for dynamic
|
|
|
|
// objects, and means that the object defined a symbol which was
|
|
|
|
// used by a reference from a regular object.
|
|
|
|
bool is_needed_ : 1;
|
2009-10-07 00:58:27 +02:00
|
|
|
// Whether this object was compiled with -fsplit-stack.
|
2009-11-05 07:24:39 +01:00
|
|
|
bool uses_split_stack_ : 1;
|
2009-10-07 00:58:27 +02:00
|
|
|
// Whether this object contains any functions compiled with the
|
|
|
|
// no_split_stack attribute.
|
2009-11-05 07:24:39 +01:00
|
|
|
bool has_no_split_stack_ : 1;
|
2009-05-20 00:14:17 +02:00
|
|
|
// True if exclude this object from automatic symbol export.
|
|
|
|
// This is used only for archive objects.
|
2009-11-05 07:24:39 +01:00
|
|
|
bool no_export_ : 1;
|
2011-04-12 02:44:48 +02:00
|
|
|
// True if the object was found in a system directory.
|
|
|
|
bool is_in_system_directory_ : 1;
|
2011-05-24 23:57:28 +02:00
|
|
|
// True if the object was linked with --as-needed.
|
|
|
|
bool as_needed_ : 1;
|
2009-11-05 07:24:39 +01:00
|
|
|
// Many sections for objects with more than SHN_LORESERVE sections.
|
|
|
|
Xindex* xindex_;
|
2006-11-06 23:46:08 +01:00
|
|
|
};
|
|
|
|
|
|
|
|
// A regular object (ET_REL). This is an abstract base class itself.
|
2011-05-24 23:41:10 +02:00
|
|
|
// The implementation is the template class Sized_relobj_file.
|
2006-11-06 23:46:08 +01:00
|
|
|
|
|
|
|
class Relobj : public Object
|
|
|
|
{
|
|
|
|
public:
|
2009-12-14 20:53:05 +01:00
|
|
|
Relobj(const std::string& name, Input_file* input_file, off_t offset = 0)
|
|
|
|
: Object(name, input_file, false, offset),
|
2008-07-11 01:01:20 +02:00
|
|
|
output_sections_(),
|
2008-02-06 09:13:50 +01:00
|
|
|
map_to_relocatable_relocs_(NULL),
|
2007-11-27 07:13:33 +01:00
|
|
|
object_merge_map_(NULL),
|
2009-08-05 22:51:56 +02:00
|
|
|
relocs_must_follow_section_writes_(false),
|
2010-08-13 00:01:11 +02:00
|
|
|
sd_(NULL),
|
|
|
|
reloc_counts_(NULL),
|
2011-05-24 23:41:10 +02:00
|
|
|
reloc_bases_(NULL),
|
|
|
|
first_dyn_reloc_(0),
|
|
|
|
dyn_reloc_count_(0)
|
2006-11-06 23:46:08 +01:00
|
|
|
{ }
|
|
|
|
|
2009-01-28 03:25:33 +01:00
|
|
|
// During garbage collection, the Read_symbols_data pass for
|
|
|
|
// each object is stored as layout needs to be done after
|
|
|
|
// reloc processing.
|
|
|
|
Symbols_data*
|
|
|
|
get_symbols_data()
|
|
|
|
{ return this->sd_; }
|
|
|
|
|
|
|
|
// Decides which section names have to be included in the worklist
|
|
|
|
// as roots.
|
|
|
|
bool
|
2010-08-25 10:36:54 +02:00
|
|
|
is_section_name_included(const char* name);
|
2009-01-28 03:25:33 +01:00
|
|
|
|
|
|
|
void
|
|
|
|
copy_symbols_data(Symbols_data* gc_sd, Read_symbols_data* sd,
|
|
|
|
unsigned int section_header_size);
|
|
|
|
|
|
|
|
void
|
|
|
|
set_symbols_data(Symbols_data* sd)
|
|
|
|
{ this->sd_ = sd; }
|
|
|
|
|
|
|
|
// During garbage collection, the Read_relocs pass for all objects
|
|
|
|
// is done before scanning the relocs. In that case, this->rd_ is
|
|
|
|
// used to store the information from Read_relocs for each object.
|
|
|
|
// This data is also used to compute the list of relevant sections.
|
|
|
|
Read_relocs_data*
|
|
|
|
get_relocs_data()
|
|
|
|
{ return this->rd_; }
|
|
|
|
|
|
|
|
void
|
|
|
|
set_relocs_data(Read_relocs_data* rd)
|
|
|
|
{ this->rd_ = rd; }
|
|
|
|
|
|
|
|
virtual bool
|
|
|
|
is_output_section_offset_invalid(unsigned int shndx) const = 0;
|
|
|
|
|
2006-10-20 22:40:49 +02:00
|
|
|
// Read the relocs.
|
2006-09-22 00:13:18 +02:00
|
|
|
void
|
2006-10-20 22:40:49 +02:00
|
|
|
read_relocs(Read_relocs_data* rd)
|
|
|
|
{ return this->do_read_relocs(rd); }
|
|
|
|
|
2009-01-28 03:25:33 +01:00
|
|
|
// Process the relocs, during garbage collection only.
|
|
|
|
void
|
2009-12-14 20:53:05 +01:00
|
|
|
gc_process_relocs(Symbol_table* symtab, Layout* layout, Read_relocs_data* rd)
|
|
|
|
{ return this->do_gc_process_relocs(symtab, layout, rd); }
|
2009-01-28 03:25:33 +01:00
|
|
|
|
2006-10-20 22:40:49 +02:00
|
|
|
// Scan the relocs and adjust the symbol table.
|
|
|
|
void
|
2009-12-14 20:53:05 +01:00
|
|
|
scan_relocs(Symbol_table* symtab, Layout* layout, Read_relocs_data* rd)
|
|
|
|
{ return this->do_scan_relocs(symtab, layout, rd); }
|
2006-09-22 00:13:18 +02:00
|
|
|
|
2011-12-19 22:07:16 +01:00
|
|
|
// Return the value of the local symbol whose index is SYMNDX, plus
|
|
|
|
// ADDEND. ADDEND is passed in so that we can correctly handle the
|
|
|
|
// section symbol for a merge section.
|
|
|
|
uint64_t
|
|
|
|
local_symbol_value(unsigned int symndx, uint64_t addend) const
|
|
|
|
{ return this->do_local_symbol_value(symndx, addend); }
|
|
|
|
|
|
|
|
// Return the PLT offset for a local symbol. It is an error to call
|
|
|
|
// this if it doesn't have one.
|
|
|
|
unsigned int
|
|
|
|
local_plt_offset(unsigned int symndx) const
|
|
|
|
{ return this->do_local_plt_offset(symndx); }
|
|
|
|
|
|
|
|
// Return whether the local symbol SYMNDX has a GOT offset of type
|
|
|
|
// GOT_TYPE.
|
|
|
|
bool
|
|
|
|
local_has_got_offset(unsigned int symndx, unsigned int got_type) const
|
|
|
|
{ return this->do_local_has_got_offset(symndx, got_type); }
|
|
|
|
|
|
|
|
// Return the GOT offset of type GOT_TYPE of the local symbol
|
|
|
|
// SYMNDX. It is an error to call this if the symbol does not have
|
|
|
|
// a GOT offset of the specified type.
|
|
|
|
unsigned int
|
|
|
|
local_got_offset(unsigned int symndx, unsigned int got_type) const
|
|
|
|
{ return this->do_local_got_offset(symndx, got_type); }
|
|
|
|
|
|
|
|
// Set the GOT offset with type GOT_TYPE of the local symbol SYMNDX
|
|
|
|
// to GOT_OFFSET.
|
|
|
|
void
|
|
|
|
set_local_got_offset(unsigned int symndx, unsigned int got_type,
|
|
|
|
unsigned int got_offset)
|
|
|
|
{ this->do_set_local_got_offset(symndx, got_type, got_offset); }
|
|
|
|
|
2012-09-12 20:29:18 +02:00
|
|
|
// Return whether the local symbol SYMNDX is a TLS symbol.
|
|
|
|
bool
|
|
|
|
local_is_tls(unsigned int symndx) const
|
|
|
|
{ return this->do_local_is_tls(symndx); }
|
|
|
|
|
2007-12-14 06:24:17 +01:00
|
|
|
// The number of local symbols in the input symbol table.
|
|
|
|
virtual unsigned int
|
|
|
|
local_symbol_count() const
|
|
|
|
{ return this->do_local_symbol_count(); }
|
|
|
|
|
2011-04-25 22:28:48 +02:00
|
|
|
// The number of local symbols in the output symbol table.
|
|
|
|
virtual unsigned int
|
|
|
|
output_local_symbol_count() const
|
|
|
|
{ return this->do_output_local_symbol_count(); }
|
|
|
|
|
|
|
|
// The file offset for local symbols in the output symbol table.
|
|
|
|
virtual off_t
|
|
|
|
local_symbol_offset() const
|
|
|
|
{ return this->do_local_symbol_offset(); }
|
|
|
|
|
2007-12-06 06:55:50 +01:00
|
|
|
// Initial local symbol processing: count the number of local symbols
|
|
|
|
// in the output symbol table and dynamic symbol table; add local symbol
|
|
|
|
// names to *POOL and *DYNPOOL.
|
|
|
|
void
|
|
|
|
count_local_symbols(Stringpool_template<char>* pool,
|
|
|
|
Stringpool_template<char>* dynpool)
|
|
|
|
{ return this->do_count_local_symbols(pool, dynpool); }
|
|
|
|
|
|
|
|
// Set the values of the local symbols, set the output symbol table
|
|
|
|
// indexes for the local variables, and set the offset where local
|
|
|
|
// symbol information will be stored. Returns the new local symbol index.
|
|
|
|
unsigned int
|
2009-08-05 22:51:56 +02:00
|
|
|
finalize_local_symbols(unsigned int index, off_t off, Symbol_table* symtab)
|
|
|
|
{ return this->do_finalize_local_symbols(index, off, symtab); }
|
2007-12-06 06:55:50 +01:00
|
|
|
|
|
|
|
// Set the output dynamic symbol table indexes for the local variables.
|
2006-11-16 01:38:25 +01:00
|
|
|
unsigned int
|
2007-12-06 06:55:50 +01:00
|
|
|
set_local_dynsym_indexes(unsigned int index)
|
|
|
|
{ return this->do_set_local_dynsym_indexes(index); }
|
|
|
|
|
|
|
|
// Set the offset where local dynamic symbol information will be stored.
|
|
|
|
unsigned int
|
|
|
|
set_local_dynsym_offset(off_t off)
|
|
|
|
{ return this->do_set_local_dynsym_offset(off); }
|
2006-09-28 00:53:42 +02:00
|
|
|
|
2011-05-24 23:41:10 +02:00
|
|
|
// Record a dynamic relocation against an input section from this object.
|
|
|
|
void
|
|
|
|
add_dyn_reloc(unsigned int index)
|
|
|
|
{
|
|
|
|
if (this->dyn_reloc_count_ == 0)
|
|
|
|
this->first_dyn_reloc_ = index;
|
|
|
|
++this->dyn_reloc_count_;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Return the index of the first dynamic relocation.
|
|
|
|
unsigned int
|
|
|
|
first_dyn_reloc() const
|
|
|
|
{ return this->first_dyn_reloc_; }
|
|
|
|
|
|
|
|
// Return the count of dynamic relocations.
|
|
|
|
unsigned int
|
|
|
|
dyn_reloc_count() const
|
|
|
|
{ return this->dyn_reloc_count_; }
|
|
|
|
|
2006-09-29 21:58:17 +02:00
|
|
|
// Relocate the input sections and write out the local symbols.
|
|
|
|
void
|
2009-12-14 20:53:05 +01:00
|
|
|
relocate(const Symbol_table* symtab, const Layout* layout, Output_file* of)
|
|
|
|
{ return this->do_relocate(symtab, layout, of); }
|
2006-09-29 21:58:17 +02:00
|
|
|
|
2006-10-10 20:54:06 +02:00
|
|
|
// Return whether an input section is being included in the link.
|
|
|
|
bool
|
2006-12-01 00:52:50 +01:00
|
|
|
is_section_included(unsigned int shndx) const
|
2006-10-10 20:54:06 +02:00
|
|
|
{
|
2008-07-11 01:01:20 +02:00
|
|
|
gold_assert(shndx < this->output_sections_.size());
|
|
|
|
return this->output_sections_[shndx] != NULL;
|
2006-10-10 20:54:06 +02:00
|
|
|
}
|
|
|
|
|
2010-01-26 22:29:10 +01:00
|
|
|
// The the output section of the input section with index SHNDX.
|
|
|
|
// This is only used currently to remove a section from the link in
|
|
|
|
// relaxation.
|
|
|
|
void
|
|
|
|
set_output_section(unsigned int shndx, Output_section* os)
|
|
|
|
{
|
|
|
|
gold_assert(shndx < this->output_sections_.size());
|
|
|
|
this->output_sections_[shndx] = os;
|
|
|
|
}
|
|
|
|
|
2006-11-03 19:26:11 +01:00
|
|
|
// Set the offset of an input section within its output section.
|
2008-12-23 03:02:20 +01:00
|
|
|
void
|
2008-07-11 01:01:20 +02:00
|
|
|
set_section_offset(unsigned int shndx, uint64_t off)
|
|
|
|
{ this->do_set_section_offset(shndx, off); }
|
2008-05-01 03:23:21 +02:00
|
|
|
|
2007-11-09 08:00:15 +01:00
|
|
|
// Return true if we need to wait for output sections to be written
|
|
|
|
// before we can apply relocations. This is true if the object has
|
|
|
|
// any relocations for sections which require special handling, such
|
|
|
|
// as the exception frame section.
|
|
|
|
bool
|
2007-12-14 20:00:21 +01:00
|
|
|
relocs_must_follow_section_writes() const
|
2007-11-09 08:00:15 +01:00
|
|
|
{ return this->relocs_must_follow_section_writes_; }
|
|
|
|
|
2007-11-27 07:13:33 +01:00
|
|
|
// Return the object merge map.
|
|
|
|
Object_merge_map*
|
|
|
|
merge_map() const
|
|
|
|
{ return this->object_merge_map_; }
|
|
|
|
|
|
|
|
// Set the object merge map.
|
|
|
|
void
|
|
|
|
set_merge_map(Object_merge_map* object_merge_map)
|
|
|
|
{
|
|
|
|
gold_assert(this->object_merge_map_ == NULL);
|
|
|
|
this->object_merge_map_ = object_merge_map;
|
|
|
|
}
|
|
|
|
|
2008-02-06 09:13:50 +01:00
|
|
|
// Record the relocatable reloc info for an input reloc section.
|
|
|
|
void
|
|
|
|
set_relocatable_relocs(unsigned int reloc_shndx, Relocatable_relocs* rr)
|
|
|
|
{
|
|
|
|
gold_assert(reloc_shndx < this->shnum());
|
|
|
|
(*this->map_to_relocatable_relocs_)[reloc_shndx] = rr;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Get the relocatable reloc info for an input reloc section.
|
|
|
|
Relocatable_relocs*
|
|
|
|
relocatable_relocs(unsigned int reloc_shndx)
|
|
|
|
{
|
|
|
|
gold_assert(reloc_shndx < this->shnum());
|
|
|
|
return (*this->map_to_relocatable_relocs_)[reloc_shndx];
|
|
|
|
}
|
|
|
|
|
2008-12-23 03:02:20 +01:00
|
|
|
// Layout sections whose layout was deferred while waiting for
|
|
|
|
// input files from a plugin.
|
|
|
|
void
|
2009-12-14 20:53:05 +01:00
|
|
|
layout_deferred_sections(Layout* layout)
|
|
|
|
{ this->do_layout_deferred_sections(layout); }
|
2008-12-23 03:02:20 +01:00
|
|
|
|
2010-08-13 00:01:11 +02:00
|
|
|
// Return the index of the first incremental relocation for symbol SYMNDX.
|
|
|
|
virtual unsigned int
|
|
|
|
do_get_incremental_reloc_base(unsigned int symndx) const
|
|
|
|
{ return this->reloc_bases_[symndx]; }
|
|
|
|
|
|
|
|
// Return the number of incremental relocations for symbol SYMNDX.
|
|
|
|
virtual unsigned int
|
|
|
|
do_get_incremental_reloc_count(unsigned int symndx) const
|
|
|
|
{ return this->reloc_counts_[symndx]; }
|
|
|
|
|
2012-10-23 23:34:58 +02:00
|
|
|
// Return the word size of the object file.
|
|
|
|
int
|
|
|
|
elfsize() const
|
|
|
|
{ return this->do_elfsize(); }
|
|
|
|
|
|
|
|
// Return TRUE if this is a big-endian object file.
|
|
|
|
bool
|
|
|
|
is_big_endian() const
|
|
|
|
{ return this->do_is_big_endian(); }
|
|
|
|
|
2006-10-10 20:54:06 +02:00
|
|
|
protected:
|
2008-07-11 01:01:20 +02:00
|
|
|
// The output section to be used for each input section, indexed by
|
|
|
|
// the input section number. The output section is NULL if the
|
|
|
|
// input section is to be discarded.
|
|
|
|
typedef std::vector<Output_section*> Output_sections;
|
2008-05-01 03:23:21 +02:00
|
|
|
|
2006-10-20 22:40:49 +02:00
|
|
|
// Read the relocs--implemented by child class.
|
|
|
|
virtual void
|
|
|
|
do_read_relocs(Read_relocs_data*) = 0;
|
|
|
|
|
2009-01-28 03:25:33 +01:00
|
|
|
// Process the relocs--implemented by child class.
|
|
|
|
virtual void
|
* object.h (class Relobj): Drop options parameter from
gc_process_relocs, scan_relocs, relocate, do_gc_process_relocs,
do_scan_relocs, do_relocate. Change all callers.
(class Sized_relobj): Drop options parameters from
do_gc_process_relocs, do_scan_relocs, do_relocate,
do_relocate_sections, relocate_sections, emit_relocs_scan,
emit_relocs_scan_reltype. Change all callers.
(struct Relocate_info): Remove options field and all references to
it.
* reloc.h (class Read_relocs): Remove options constructor
parameter and options_ field. Change all callers.
(class Gc_process_relocs, class Scan_relocs): Likewise.
(class Relocate_task): Likewise.
* target-reloc.h (scan_relocs): Remove options parameter. Change
all callers.
(scan_relocatable_relocs): Likewise.
* target.h (class Sized_target): Remove options parameter from
gc_process_relocs, scan_relocs, scan_relocatable_relocs. Change
all callers.
* gc.h (gc_process_relocs): Remove options parameter. Change all
callers.
* arm.cc: Update functions to remove options parameters.
* i386.cc: Likewise.
* powerpc.cc: Likewise.
* sparc.cc: Likewise.
* x86_64.cc: Likewise.
* testsuite/testfile.cc: Likewise.
2009-10-29 06:16:23 +01:00
|
|
|
do_gc_process_relocs(Symbol_table*, Layout*, Read_relocs_data*) = 0;
|
2009-01-28 03:25:33 +01:00
|
|
|
|
2006-10-20 22:40:49 +02:00
|
|
|
// Scan the relocs--implemented by child class.
|
|
|
|
virtual void
|
* object.h (class Relobj): Drop options parameter from
gc_process_relocs, scan_relocs, relocate, do_gc_process_relocs,
do_scan_relocs, do_relocate. Change all callers.
(class Sized_relobj): Drop options parameters from
do_gc_process_relocs, do_scan_relocs, do_relocate,
do_relocate_sections, relocate_sections, emit_relocs_scan,
emit_relocs_scan_reltype. Change all callers.
(struct Relocate_info): Remove options field and all references to
it.
* reloc.h (class Read_relocs): Remove options constructor
parameter and options_ field. Change all callers.
(class Gc_process_relocs, class Scan_relocs): Likewise.
(class Relocate_task): Likewise.
* target-reloc.h (scan_relocs): Remove options parameter. Change
all callers.
(scan_relocatable_relocs): Likewise.
* target.h (class Sized_target): Remove options parameter from
gc_process_relocs, scan_relocs, scan_relocatable_relocs. Change
all callers.
* gc.h (gc_process_relocs): Remove options parameter. Change all
callers.
* arm.cc: Update functions to remove options parameters.
* i386.cc: Likewise.
* powerpc.cc: Likewise.
* sparc.cc: Likewise.
* x86_64.cc: Likewise.
* testsuite/testfile.cc: Likewise.
2009-10-29 06:16:23 +01:00
|
|
|
do_scan_relocs(Symbol_table*, Layout*, Read_relocs_data*) = 0;
|
2006-10-20 22:40:49 +02:00
|
|
|
|
2011-12-19 22:07:16 +01:00
|
|
|
// Return the value of a local symbol.
|
|
|
|
virtual uint64_t
|
|
|
|
do_local_symbol_value(unsigned int symndx, uint64_t addend) const = 0;
|
|
|
|
|
|
|
|
// Return the PLT offset of a local symbol.
|
|
|
|
virtual unsigned int
|
|
|
|
do_local_plt_offset(unsigned int symndx) const = 0;
|
|
|
|
|
|
|
|
// Return whether a local symbol has a GOT offset of a given type.
|
|
|
|
virtual bool
|
|
|
|
do_local_has_got_offset(unsigned int symndx,
|
|
|
|
unsigned int got_type) const = 0;
|
|
|
|
|
|
|
|
// Return the GOT offset of a given type of a local symbol.
|
|
|
|
virtual unsigned int
|
|
|
|
do_local_got_offset(unsigned int symndx, unsigned int got_type) const = 0;
|
|
|
|
|
|
|
|
// Set the GOT offset with a given type for a local symbol.
|
|
|
|
virtual void
|
|
|
|
do_set_local_got_offset(unsigned int symndx, unsigned int got_type,
|
|
|
|
unsigned int got_offset) = 0;
|
|
|
|
|
2012-09-12 20:29:18 +02:00
|
|
|
// Return whether local symbol SYMNDX is a TLS symbol.
|
|
|
|
virtual bool
|
|
|
|
do_local_is_tls(unsigned int symndx) const = 0;
|
|
|
|
|
2007-12-14 06:24:17 +01:00
|
|
|
// Return the number of local symbols--implemented by child class.
|
|
|
|
virtual unsigned int
|
|
|
|
do_local_symbol_count() const = 0;
|
|
|
|
|
2011-04-25 22:28:48 +02:00
|
|
|
// Return the number of output local symbols--implemented by child class.
|
|
|
|
virtual unsigned int
|
|
|
|
do_output_local_symbol_count() const = 0;
|
|
|
|
|
|
|
|
// Return the file offset for local symbols--implemented by child class.
|
|
|
|
virtual off_t
|
|
|
|
do_local_symbol_offset() const = 0;
|
|
|
|
|
2007-12-06 06:55:50 +01:00
|
|
|
// Count local symbols--implemented by child class.
|
|
|
|
virtual void
|
|
|
|
do_count_local_symbols(Stringpool_template<char>*,
|
2008-02-06 09:13:50 +01:00
|
|
|
Stringpool_template<char>*) = 0;
|
2006-09-28 00:53:42 +02:00
|
|
|
|
2008-02-06 09:13:50 +01:00
|
|
|
// Finalize the local symbols. Set the output symbol table indexes
|
|
|
|
// for the local variables, and set the offset where local symbol
|
|
|
|
// information will be stored.
|
2007-12-06 06:55:50 +01:00
|
|
|
virtual unsigned int
|
2009-08-05 22:51:56 +02:00
|
|
|
do_finalize_local_symbols(unsigned int, off_t, Symbol_table*) = 0;
|
2007-12-06 06:55:50 +01:00
|
|
|
|
|
|
|
// Set the output dynamic symbol table indexes for the local variables.
|
|
|
|
virtual unsigned int
|
|
|
|
do_set_local_dynsym_indexes(unsigned int) = 0;
|
|
|
|
|
|
|
|
// Set the offset where local dynamic symbol information will be stored.
|
|
|
|
virtual unsigned int
|
|
|
|
do_set_local_dynsym_offset(off_t) = 0;
|
|
|
|
|
2006-09-29 21:58:17 +02:00
|
|
|
// Relocate the input sections and write out the local
|
|
|
|
// symbols--implemented by child class.
|
|
|
|
virtual void
|
* object.h (class Relobj): Drop options parameter from
gc_process_relocs, scan_relocs, relocate, do_gc_process_relocs,
do_scan_relocs, do_relocate. Change all callers.
(class Sized_relobj): Drop options parameters from
do_gc_process_relocs, do_scan_relocs, do_relocate,
do_relocate_sections, relocate_sections, emit_relocs_scan,
emit_relocs_scan_reltype. Change all callers.
(struct Relocate_info): Remove options field and all references to
it.
* reloc.h (class Read_relocs): Remove options constructor
parameter and options_ field. Change all callers.
(class Gc_process_relocs, class Scan_relocs): Likewise.
(class Relocate_task): Likewise.
* target-reloc.h (scan_relocs): Remove options parameter. Change
all callers.
(scan_relocatable_relocs): Likewise.
* target.h (class Sized_target): Remove options parameter from
gc_process_relocs, scan_relocs, scan_relocatable_relocs. Change
all callers.
* gc.h (gc_process_relocs): Remove options parameter. Change all
callers.
* arm.cc: Update functions to remove options parameters.
* i386.cc: Likewise.
* powerpc.cc: Likewise.
* sparc.cc: Likewise.
* x86_64.cc: Likewise.
* testsuite/testfile.cc: Likewise.
2009-10-29 06:16:23 +01:00
|
|
|
do_relocate(const Symbol_table* symtab, const Layout*, Output_file* of) = 0;
|
2006-10-20 22:40:49 +02:00
|
|
|
|
2008-07-11 01:01:20 +02:00
|
|
|
// Set the offset of a section--implemented by child class.
|
|
|
|
virtual void
|
|
|
|
do_set_section_offset(unsigned int shndx, uint64_t off) = 0;
|
2008-05-01 03:23:21 +02:00
|
|
|
|
2008-12-23 03:02:20 +01:00
|
|
|
// Layout sections whose layout was deferred while waiting for
|
|
|
|
// input files from a plugin--implemented by child class.
|
|
|
|
virtual void
|
|
|
|
do_layout_deferred_sections(Layout*) = 0;
|
|
|
|
|
2010-08-13 00:01:11 +02:00
|
|
|
// Given a section index, return the corresponding Output_section.
|
|
|
|
// The return value will be NULL if the section is not included in
|
|
|
|
// the link.
|
|
|
|
Output_section*
|
|
|
|
do_output_section(unsigned int shndx) const
|
|
|
|
{
|
|
|
|
gold_assert(shndx < this->output_sections_.size());
|
|
|
|
return this->output_sections_[shndx];
|
|
|
|
}
|
|
|
|
|
2008-07-11 01:01:20 +02:00
|
|
|
// Return the vector mapping input sections to output sections.
|
|
|
|
Output_sections&
|
|
|
|
output_sections()
|
|
|
|
{ return this->output_sections_; }
|
2008-05-01 03:23:21 +02:00
|
|
|
|
2008-07-11 01:01:20 +02:00
|
|
|
const Output_sections&
|
|
|
|
output_sections() const
|
|
|
|
{ return this->output_sections_; }
|
2008-05-01 03:23:21 +02:00
|
|
|
|
2008-02-06 09:13:50 +01:00
|
|
|
// Set the size of the relocatable relocs array.
|
|
|
|
void
|
|
|
|
size_relocatable_relocs()
|
|
|
|
{
|
|
|
|
this->map_to_relocatable_relocs_ =
|
|
|
|
new std::vector<Relocatable_relocs*>(this->shnum());
|
|
|
|
}
|
|
|
|
|
2007-11-09 08:00:15 +01:00
|
|
|
// Record that we must wait for the output sections to be written
|
|
|
|
// before applying relocations.
|
|
|
|
void
|
|
|
|
set_relocs_must_follow_section_writes()
|
|
|
|
{ this->relocs_must_follow_section_writes_ = true; }
|
|
|
|
|
2010-08-13 00:01:11 +02:00
|
|
|
// Allocate the array for counting incremental relocations.
|
|
|
|
void
|
|
|
|
allocate_incremental_reloc_counts()
|
|
|
|
{
|
|
|
|
unsigned int nsyms = this->do_get_global_symbols()->size();
|
|
|
|
this->reloc_counts_ = new unsigned int[nsyms];
|
|
|
|
gold_assert(this->reloc_counts_ != NULL);
|
|
|
|
memset(this->reloc_counts_, 0, nsyms * sizeof(unsigned int));
|
|
|
|
}
|
|
|
|
|
|
|
|
// Record a relocation in this object referencing global symbol SYMNDX.
|
|
|
|
// Used for tracking incremental link information.
|
|
|
|
void
|
|
|
|
count_incremental_reloc(unsigned int symndx)
|
|
|
|
{
|
|
|
|
unsigned int nsyms = this->do_get_global_symbols()->size();
|
|
|
|
gold_assert(symndx < nsyms);
|
|
|
|
gold_assert(this->reloc_counts_ != NULL);
|
|
|
|
++this->reloc_counts_[symndx];
|
|
|
|
}
|
|
|
|
|
|
|
|
// Finalize the incremental relocation information.
|
|
|
|
void
|
2011-04-12 02:44:48 +02:00
|
|
|
finalize_incremental_relocs(Layout* layout, bool clear_counts);
|
2010-08-13 00:01:11 +02:00
|
|
|
|
|
|
|
// Return the index of the next relocation to be written for global symbol
|
|
|
|
// SYMNDX. Only valid after finalize_incremental_relocs() has been called.
|
|
|
|
unsigned int
|
|
|
|
next_incremental_reloc_index(unsigned int symndx)
|
|
|
|
{
|
|
|
|
unsigned int nsyms = this->do_get_global_symbols()->size();
|
|
|
|
|
|
|
|
gold_assert(this->reloc_counts_ != NULL);
|
|
|
|
gold_assert(this->reloc_bases_ != NULL);
|
|
|
|
gold_assert(symndx < nsyms);
|
|
|
|
|
|
|
|
unsigned int counter = this->reloc_counts_[symndx]++;
|
|
|
|
return this->reloc_bases_[symndx] + counter;
|
|
|
|
}
|
|
|
|
|
2012-10-23 23:34:58 +02:00
|
|
|
// Return the word size of the object file--
|
|
|
|
// implemented by child class.
|
|
|
|
virtual int
|
|
|
|
do_elfsize() const = 0;
|
|
|
|
|
|
|
|
// Return TRUE if this is a big-endian object file--
|
|
|
|
// implemented by child class.
|
|
|
|
virtual bool
|
|
|
|
do_is_big_endian() const = 0;
|
|
|
|
|
2006-08-05 01:10:59 +02:00
|
|
|
private:
|
2006-09-22 00:13:18 +02:00
|
|
|
// Mapping from input sections to output section.
|
2008-07-11 01:01:20 +02:00
|
|
|
Output_sections output_sections_;
|
2008-02-06 09:13:50 +01:00
|
|
|
// Mapping from input section index to the information recorded for
|
|
|
|
// the relocations. This is only used for a relocatable link.
|
|
|
|
std::vector<Relocatable_relocs*>* map_to_relocatable_relocs_;
|
2007-11-27 07:13:33 +01:00
|
|
|
// Mappings for merge sections. This is managed by the code in the
|
|
|
|
// Merge_map class.
|
|
|
|
Object_merge_map* object_merge_map_;
|
2007-11-09 08:00:15 +01:00
|
|
|
// Whether we need to wait for output sections to be written before
|
|
|
|
// we can apply relocations.
|
|
|
|
bool relocs_must_follow_section_writes_;
|
2009-01-28 03:25:33 +01:00
|
|
|
// Used to store the relocs data computed by the Read_relocs pass.
|
|
|
|
// Used during garbage collection of unused sections.
|
|
|
|
Read_relocs_data* rd_;
|
|
|
|
// Used to store the symbols data computed by the Read_symbols pass.
|
|
|
|
// Again used during garbage collection when laying out referenced
|
|
|
|
// sections.
|
2010-08-25 10:36:54 +02:00
|
|
|
gold::Symbols_data* sd_;
|
2010-08-13 00:01:11 +02:00
|
|
|
// Per-symbol counts of relocations, for incremental links.
|
|
|
|
unsigned int* reloc_counts_;
|
|
|
|
// Per-symbol base indexes of relocations, for incremental links.
|
|
|
|
unsigned int* reloc_bases_;
|
2011-05-24 23:41:10 +02:00
|
|
|
// Index of the first dynamic relocation for this object.
|
|
|
|
unsigned int first_dyn_reloc_;
|
|
|
|
// Count of dynamic relocations for this object.
|
|
|
|
unsigned int dyn_reloc_count_;
|
2006-08-05 01:10:59 +02:00
|
|
|
};
|
|
|
|
|
2007-12-21 22:19:45 +01:00
|
|
|
// This class is used to handle relocations against a section symbol
|
|
|
|
// in an SHF_MERGE section. For such a symbol, we need to know the
|
|
|
|
// addend of the relocation before we can determine the final value.
|
|
|
|
// The addend gives us the location in the input section, and we can
|
|
|
|
// determine how it is mapped to the output section. For a
|
|
|
|
// non-section symbol, we apply the addend to the final value of the
|
|
|
|
// symbol; that is done in finalize_local_symbols, and does not use
|
|
|
|
// this class.
|
|
|
|
|
|
|
|
template<int size>
|
|
|
|
class Merged_symbol_value
|
|
|
|
{
|
|
|
|
public:
|
|
|
|
typedef typename elfcpp::Elf_types<size>::Elf_Addr Value;
|
|
|
|
|
|
|
|
// We use a hash table to map offsets in the input section to output
|
|
|
|
// addresses.
|
|
|
|
typedef Unordered_map<section_offset_type, Value> Output_addresses;
|
|
|
|
|
|
|
|
Merged_symbol_value(Value input_value, Value output_start_address)
|
|
|
|
: input_value_(input_value), output_start_address_(output_start_address),
|
|
|
|
output_addresses_()
|
|
|
|
{ }
|
|
|
|
|
|
|
|
// Initialize the hash table.
|
|
|
|
void
|
|
|
|
initialize_input_to_output_map(const Relobj*, unsigned int input_shndx);
|
|
|
|
|
|
|
|
// Release the hash table to save space.
|
|
|
|
void
|
|
|
|
free_input_to_output_map()
|
|
|
|
{ this->output_addresses_.clear(); }
|
|
|
|
|
|
|
|
// Get the output value corresponding to an addend. The object and
|
|
|
|
// input section index are passed in because the caller will have
|
|
|
|
// them; otherwise we could store them here.
|
|
|
|
Value
|
|
|
|
value(const Relobj* object, unsigned int input_shndx, Value addend) const
|
|
|
|
{
|
2008-07-24 03:24:50 +02:00
|
|
|
// This is a relocation against a section symbol. ADDEND is the
|
|
|
|
// offset in the section. The result should be the start of some
|
|
|
|
// merge area. If the object file wants something else, it should
|
|
|
|
// use a regular symbol rather than a section symbol.
|
|
|
|
// Unfortunately, PR 6658 shows a case in which the object file
|
|
|
|
// refers to the section symbol, but uses a negative ADDEND to
|
|
|
|
// compensate for a PC relative reloc. We can't handle the
|
|
|
|
// general case. However, we can handle the special case of a
|
|
|
|
// negative addend, by assuming that it refers to the start of the
|
|
|
|
// section. Of course, that means that we have to guess when
|
|
|
|
// ADDEND is negative. It is normal to see a 32-bit value here
|
|
|
|
// even when the template parameter size is 64, as 64-bit object
|
|
|
|
// file formats have 32-bit relocations. We know this is a merge
|
|
|
|
// section, so we know it has to fit into memory. So we assume
|
|
|
|
// that we won't see a value larger than a large 32-bit unsigned
|
|
|
|
// value. This will break objects with very very large merge
|
|
|
|
// sections; they probably break in other ways anyhow.
|
|
|
|
Value input_offset = this->input_value_;
|
|
|
|
if (addend < 0xffffff00)
|
|
|
|
{
|
|
|
|
input_offset += addend;
|
|
|
|
addend = 0;
|
|
|
|
}
|
2007-12-21 22:19:45 +01:00
|
|
|
typename Output_addresses::const_iterator p =
|
|
|
|
this->output_addresses_.find(input_offset);
|
|
|
|
if (p != this->output_addresses_.end())
|
2008-07-24 03:24:50 +02:00
|
|
|
return p->second + addend;
|
2007-12-21 22:19:45 +01:00
|
|
|
|
2008-07-24 03:24:50 +02:00
|
|
|
return (this->value_from_output_section(object, input_shndx, input_offset)
|
|
|
|
+ addend);
|
2007-12-21 22:19:45 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
private:
|
|
|
|
// Get the output value for an input offset if we couldn't find it
|
|
|
|
// in the hash table.
|
|
|
|
Value
|
|
|
|
value_from_output_section(const Relobj*, unsigned int input_shndx,
|
|
|
|
Value input_offset) const;
|
|
|
|
|
|
|
|
// The value of the section symbol in the input file. This is
|
|
|
|
// normally zero, but could in principle be something else.
|
|
|
|
Value input_value_;
|
|
|
|
// The start address of this merged section in the output file.
|
|
|
|
Value output_start_address_;
|
|
|
|
// A hash table which maps offsets in the input section to output
|
|
|
|
// addresses. This only maps specific offsets, not all offsets.
|
|
|
|
Output_addresses output_addresses_;
|
|
|
|
};
|
|
|
|
|
2007-05-16 19:42:48 +02:00
|
|
|
// This POD class is holds the value of a symbol. This is used for
|
|
|
|
// local symbols, and for all symbols during relocation processing.
|
2007-11-09 08:00:15 +01:00
|
|
|
// For special sections, such as SHF_MERGE sections, this calls a
|
|
|
|
// function to get the final symbol value.
|
2007-05-16 19:42:48 +02:00
|
|
|
|
|
|
|
template<int size>
|
|
|
|
class Symbol_value
|
|
|
|
{
|
|
|
|
public:
|
|
|
|
typedef typename elfcpp::Elf_types<size>::Elf_Addr Value;
|
|
|
|
|
|
|
|
Symbol_value()
|
2007-12-06 06:55:50 +01:00
|
|
|
: output_symtab_index_(0), output_dynsym_index_(-1U), input_shndx_(0),
|
2008-04-19 20:30:58 +02:00
|
|
|
is_ordinary_shndx_(false), is_section_symbol_(false),
|
2010-08-20 00:50:16 +02:00
|
|
|
is_tls_symbol_(false), is_ifunc_symbol_(false), has_output_value_(true)
|
2007-12-21 22:19:45 +01:00
|
|
|
{ this->u_.value = 0; }
|
2007-05-16 19:42:48 +02:00
|
|
|
|
2010-09-09 01:54:51 +02:00
|
|
|
~Symbol_value()
|
|
|
|
{
|
|
|
|
if (!this->has_output_value_)
|
|
|
|
delete this->u_.merged_symbol_value;
|
|
|
|
}
|
|
|
|
|
2007-05-16 19:42:48 +02:00
|
|
|
// Get the value of this symbol. OBJECT is the object in which this
|
|
|
|
// symbol is defined, and ADDEND is an addend to add to the value.
|
|
|
|
template<bool big_endian>
|
|
|
|
Value
|
2011-05-24 23:41:10 +02:00
|
|
|
value(const Sized_relobj_file<size, big_endian>* object, Value addend) const
|
2007-05-16 19:42:48 +02:00
|
|
|
{
|
2007-12-21 22:19:45 +01:00
|
|
|
if (this->has_output_value_)
|
|
|
|
return this->u_.value + addend;
|
|
|
|
else
|
2008-04-19 20:30:58 +02:00
|
|
|
{
|
|
|
|
gold_assert(this->is_ordinary_shndx_);
|
|
|
|
return this->u_.merged_symbol_value->value(object, this->input_shndx_,
|
|
|
|
addend);
|
|
|
|
}
|
2007-05-16 19:42:48 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
// Set the value of this symbol in the output symbol table.
|
|
|
|
void
|
2009-12-14 20:53:05 +01:00
|
|
|
set_output_value(Value value)
|
|
|
|
{ this->u_.value = value; }
|
2007-12-21 22:19:45 +01:00
|
|
|
|
|
|
|
// For a section symbol in a merged section, we need more
|
|
|
|
// information.
|
|
|
|
void
|
|
|
|
set_merged_symbol_value(Merged_symbol_value<size>* msv)
|
2007-05-16 19:42:48 +02:00
|
|
|
{
|
2007-12-21 22:19:45 +01:00
|
|
|
gold_assert(this->is_section_symbol_);
|
|
|
|
this->has_output_value_ = false;
|
|
|
|
this->u_.merged_symbol_value = msv;
|
2007-05-16 19:42:48 +02:00
|
|
|
}
|
|
|
|
|
2007-12-21 22:19:45 +01:00
|
|
|
// Initialize the input to output map for a section symbol in a
|
|
|
|
// merged section. We also initialize the value of a non-section
|
|
|
|
// symbol in a merged section.
|
2007-05-16 19:42:48 +02:00
|
|
|
void
|
2007-12-21 22:19:45 +01:00
|
|
|
initialize_input_to_output_map(const Relobj* object)
|
2007-05-16 19:42:48 +02:00
|
|
|
{
|
2007-12-21 22:19:45 +01:00
|
|
|
if (!this->has_output_value_)
|
|
|
|
{
|
2008-04-19 20:30:58 +02:00
|
|
|
gold_assert(this->is_section_symbol_ && this->is_ordinary_shndx_);
|
2007-12-21 22:19:45 +01:00
|
|
|
Merged_symbol_value<size>* msv = this->u_.merged_symbol_value;
|
|
|
|
msv->initialize_input_to_output_map(object, this->input_shndx_);
|
|
|
|
}
|
2007-05-16 19:42:48 +02:00
|
|
|
}
|
|
|
|
|
2007-12-21 22:19:45 +01:00
|
|
|
// Free the input to output map for a section symbol in a merged
|
|
|
|
// section.
|
|
|
|
void
|
|
|
|
free_input_to_output_map()
|
2007-12-06 06:55:50 +01:00
|
|
|
{
|
2007-12-21 22:19:45 +01:00
|
|
|
if (!this->has_output_value_)
|
|
|
|
this->u_.merged_symbol_value->free_input_to_output_map();
|
2007-12-06 06:55:50 +01:00
|
|
|
}
|
|
|
|
|
2007-12-21 22:19:45 +01:00
|
|
|
// Set the value of the symbol from the input file. This is only
|
|
|
|
// called by count_local_symbols, to communicate the value to
|
|
|
|
// finalize_local_symbols.
|
|
|
|
void
|
2009-12-14 20:53:05 +01:00
|
|
|
set_input_value(Value value)
|
|
|
|
{ this->u_.value = value; }
|
2007-12-21 22:19:45 +01:00
|
|
|
|
|
|
|
// Return the input value. This is only called by
|
2008-05-01 03:23:21 +02:00
|
|
|
// finalize_local_symbols and (in special cases) relocate_section.
|
2007-12-21 22:19:45 +01:00
|
|
|
Value
|
|
|
|
input_value() const
|
|
|
|
{ return this->u_.value; }
|
|
|
|
|
2010-03-03 20:31:54 +01:00
|
|
|
// Return whether we have set the index in the output symbol table
|
|
|
|
// yet.
|
|
|
|
bool
|
|
|
|
is_output_symtab_index_set() const
|
|
|
|
{
|
|
|
|
return (this->output_symtab_index_ != 0
|
|
|
|
&& this->output_symtab_index_ != -2U);
|
|
|
|
}
|
|
|
|
|
|
|
|
// Return whether this symbol may be discarded from the normal
|
|
|
|
// symbol table.
|
|
|
|
bool
|
|
|
|
may_be_discarded_from_output_symtab() const
|
|
|
|
{
|
|
|
|
gold_assert(!this->is_output_symtab_index_set());
|
|
|
|
return this->output_symtab_index_ != -2U;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Return whether this symbol has an entry in the output symbol
|
2007-05-16 19:42:48 +02:00
|
|
|
// table.
|
|
|
|
bool
|
2010-03-03 20:31:54 +01:00
|
|
|
has_output_symtab_entry() const
|
|
|
|
{
|
|
|
|
gold_assert(this->is_output_symtab_index_set());
|
|
|
|
return this->output_symtab_index_ != -1U;
|
|
|
|
}
|
2007-05-16 19:42:48 +02:00
|
|
|
|
|
|
|
// Return the index in the output symbol table.
|
|
|
|
unsigned int
|
|
|
|
output_symtab_index() const
|
|
|
|
{
|
2010-03-03 20:31:54 +01:00
|
|
|
gold_assert(this->is_output_symtab_index_set()
|
|
|
|
&& this->output_symtab_index_ != -1U);
|
2007-05-16 19:42:48 +02:00
|
|
|
return this->output_symtab_index_;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Set the index in the output symbol table.
|
|
|
|
void
|
|
|
|
set_output_symtab_index(unsigned int i)
|
|
|
|
{
|
2010-03-03 20:31:54 +01:00
|
|
|
gold_assert(!this->is_output_symtab_index_set());
|
|
|
|
gold_assert(i != 0 && i != -1U && i != -2U);
|
2007-05-16 19:42:48 +02:00
|
|
|
this->output_symtab_index_ = i;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Record that this symbol should not go into the output symbol
|
|
|
|
// table.
|
|
|
|
void
|
|
|
|
set_no_output_symtab_entry()
|
|
|
|
{
|
|
|
|
gold_assert(this->output_symtab_index_ == 0);
|
|
|
|
this->output_symtab_index_ = -1U;
|
|
|
|
}
|
|
|
|
|
2010-03-03 20:31:54 +01:00
|
|
|
// Record that this symbol must go into the output symbol table,
|
|
|
|
// because it there is a relocation that uses it.
|
|
|
|
void
|
|
|
|
set_must_have_output_symtab_entry()
|
|
|
|
{
|
|
|
|
gold_assert(!this->is_output_symtab_index_set());
|
|
|
|
this->output_symtab_index_ = -2U;
|
|
|
|
}
|
|
|
|
|
2007-12-06 06:55:50 +01:00
|
|
|
// Set the index in the output dynamic symbol table.
|
|
|
|
void
|
|
|
|
set_needs_output_dynsym_entry()
|
|
|
|
{
|
2008-02-12 01:28:48 +01:00
|
|
|
gold_assert(!this->is_section_symbol());
|
2007-12-06 06:55:50 +01:00
|
|
|
this->output_dynsym_index_ = 0;
|
|
|
|
}
|
|
|
|
|
2010-03-03 20:31:54 +01:00
|
|
|
// Return whether this symbol should go into the dynamic symbol
|
2007-12-06 06:55:50 +01:00
|
|
|
// table.
|
|
|
|
bool
|
|
|
|
needs_output_dynsym_entry() const
|
|
|
|
{
|
|
|
|
return this->output_dynsym_index_ != -1U;
|
|
|
|
}
|
|
|
|
|
2010-03-03 20:31:54 +01:00
|
|
|
// Return whether this symbol has an entry in the dynamic symbol
|
|
|
|
// table.
|
|
|
|
bool
|
|
|
|
has_output_dynsym_entry() const
|
|
|
|
{
|
|
|
|
gold_assert(this->output_dynsym_index_ != 0);
|
|
|
|
return this->output_dynsym_index_ != -1U;
|
|
|
|
}
|
|
|
|
|
2007-12-06 06:55:50 +01:00
|
|
|
// Record that this symbol should go into the dynamic symbol table.
|
|
|
|
void
|
|
|
|
set_output_dynsym_index(unsigned int i)
|
|
|
|
{
|
|
|
|
gold_assert(this->output_dynsym_index_ == 0);
|
2010-03-03 20:31:54 +01:00
|
|
|
gold_assert(i != 0 && i != -1U);
|
2007-12-06 06:55:50 +01:00
|
|
|
this->output_dynsym_index_ = i;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Return the index in the output dynamic symbol table.
|
|
|
|
unsigned int
|
|
|
|
output_dynsym_index() const
|
|
|
|
{
|
2008-02-12 01:28:48 +01:00
|
|
|
gold_assert(this->output_dynsym_index_ != 0
|
|
|
|
&& this->output_dynsym_index_ != -1U);
|
2007-12-06 06:55:50 +01:00
|
|
|
return this->output_dynsym_index_;
|
|
|
|
}
|
|
|
|
|
2007-05-16 19:42:48 +02:00
|
|
|
// Set the index of the input section in the input file.
|
|
|
|
void
|
2008-04-19 20:30:58 +02:00
|
|
|
set_input_shndx(unsigned int i, bool is_ordinary)
|
2007-11-09 08:00:15 +01:00
|
|
|
{
|
|
|
|
this->input_shndx_ = i;
|
2007-12-07 01:54:28 +01:00
|
|
|
// input_shndx_ field is a bitfield, so make sure that the value
|
|
|
|
// fits.
|
2007-11-09 08:00:15 +01:00
|
|
|
gold_assert(this->input_shndx_ == i);
|
2008-04-19 20:30:58 +02:00
|
|
|
this->is_ordinary_shndx_ = is_ordinary;
|
2007-11-09 08:00:15 +01:00
|
|
|
}
|
2007-05-16 19:42:48 +02:00
|
|
|
|
2007-12-06 06:55:50 +01:00
|
|
|
// Return the index of the input section in the input file.
|
|
|
|
unsigned int
|
2008-04-19 20:30:58 +02:00
|
|
|
input_shndx(bool* is_ordinary) const
|
|
|
|
{
|
|
|
|
*is_ordinary = this->is_ordinary_shndx_;
|
|
|
|
return this->input_shndx_;
|
|
|
|
}
|
2007-12-06 06:55:50 +01:00
|
|
|
|
2007-12-21 22:19:45 +01:00
|
|
|
// Whether this is a section symbol.
|
|
|
|
bool
|
|
|
|
is_section_symbol() const
|
|
|
|
{ return this->is_section_symbol_; }
|
|
|
|
|
2007-10-06 07:40:44 +02:00
|
|
|
// Record that this is a section symbol.
|
|
|
|
void
|
|
|
|
set_is_section_symbol()
|
2008-02-12 01:28:48 +01:00
|
|
|
{
|
|
|
|
gold_assert(!this->needs_output_dynsym_entry());
|
|
|
|
this->is_section_symbol_ = true;
|
|
|
|
}
|
2007-10-06 07:40:44 +02:00
|
|
|
|
2007-12-06 06:55:50 +01:00
|
|
|
// Record that this is a TLS symbol.
|
|
|
|
void
|
|
|
|
set_is_tls_symbol()
|
|
|
|
{ this->is_tls_symbol_ = true; }
|
|
|
|
|
2010-08-20 00:50:16 +02:00
|
|
|
// Return true if this is a TLS symbol.
|
2007-12-06 06:55:50 +01:00
|
|
|
bool
|
|
|
|
is_tls_symbol() const
|
|
|
|
{ return this->is_tls_symbol_; }
|
|
|
|
|
2010-08-20 00:50:16 +02:00
|
|
|
// Record that this is an IFUNC symbol.
|
|
|
|
void
|
|
|
|
set_is_ifunc_symbol()
|
|
|
|
{ this->is_ifunc_symbol_ = true; }
|
|
|
|
|
|
|
|
// Return true if this is an IFUNC symbol.
|
|
|
|
bool
|
|
|
|
is_ifunc_symbol() const
|
|
|
|
{ return this->is_ifunc_symbol_; }
|
|
|
|
|
2010-09-09 01:54:51 +02:00
|
|
|
// Return true if this has output value.
|
|
|
|
bool
|
|
|
|
has_output_value() const
|
|
|
|
{ return this->has_output_value_; }
|
|
|
|
|
2007-05-16 19:42:48 +02:00
|
|
|
private:
|
|
|
|
// The index of this local symbol in the output symbol table. This
|
2010-03-03 20:31:54 +01:00
|
|
|
// will be 0 if no value has been assigned yet, and the symbol may
|
|
|
|
// be omitted. This will be -1U if the symbol should not go into
|
|
|
|
// the symbol table. This will be -2U if the symbol must go into
|
|
|
|
// the symbol table, but no index has been assigned yet.
|
2007-05-16 19:42:48 +02:00
|
|
|
unsigned int output_symtab_index_;
|
2007-12-06 06:55:50 +01:00
|
|
|
// The index of this local symbol in the dynamic symbol table. This
|
2010-03-03 20:31:54 +01:00
|
|
|
// will be -1U if the symbol should not go into the symbol table.
|
2007-12-06 06:55:50 +01:00
|
|
|
unsigned int output_dynsym_index_;
|
2007-05-16 19:42:48 +02:00
|
|
|
// The section index in the input file in which this symbol is
|
|
|
|
// defined.
|
2010-08-20 00:50:16 +02:00
|
|
|
unsigned int input_shndx_ : 27;
|
2008-04-19 20:30:58 +02:00
|
|
|
// Whether the section index is an ordinary index, not a special
|
|
|
|
// value.
|
|
|
|
bool is_ordinary_shndx_ : 1;
|
2007-10-06 07:40:44 +02:00
|
|
|
// Whether this is a STT_SECTION symbol.
|
|
|
|
bool is_section_symbol_ : 1;
|
2007-12-06 06:55:50 +01:00
|
|
|
// Whether this is a STT_TLS symbol.
|
|
|
|
bool is_tls_symbol_ : 1;
|
2010-08-20 00:50:16 +02:00
|
|
|
// Whether this is a STT_GNU_IFUNC symbol.
|
|
|
|
bool is_ifunc_symbol_ : 1;
|
2007-12-21 22:19:45 +01:00
|
|
|
// Whether this symbol has a value for the output file. This is
|
|
|
|
// normally set to true during Layout::finalize, by
|
|
|
|
// finalize_local_symbols. It will be false for a section symbol in
|
|
|
|
// a merge section, as for such symbols we can not determine the
|
|
|
|
// value to use in a relocation until we see the addend.
|
|
|
|
bool has_output_value_ : 1;
|
|
|
|
union
|
|
|
|
{
|
|
|
|
// This is used if has_output_value_ is true. Between
|
|
|
|
// count_local_symbols and finalize_local_symbols, this is the
|
|
|
|
// value in the input file. After finalize_local_symbols, it is
|
|
|
|
// the value in the output file.
|
|
|
|
Value value;
|
|
|
|
// This is used if has_output_value_ is false. It points to the
|
|
|
|
// information we need to get the value for a merge section.
|
|
|
|
Merged_symbol_value<size>* merged_symbol_value;
|
|
|
|
} u_;
|
2007-05-16 19:42:48 +02:00
|
|
|
};
|
|
|
|
|
2009-10-07 00:58:27 +02:00
|
|
|
// This type is used to modify relocations for -fsplit-stack. It is
|
|
|
|
// indexed by relocation index, and means that the relocation at that
|
|
|
|
// index should use the symbol from the vector, rather than the one
|
|
|
|
// indicated by the relocation.
|
|
|
|
|
|
|
|
class Reloc_symbol_changes
|
|
|
|
{
|
|
|
|
public:
|
|
|
|
Reloc_symbol_changes(size_t count)
|
|
|
|
: vec_(count, NULL)
|
|
|
|
{ }
|
|
|
|
|
|
|
|
void
|
|
|
|
set(size_t i, Symbol* sym)
|
|
|
|
{ this->vec_[i] = sym; }
|
|
|
|
|
|
|
|
const Symbol*
|
|
|
|
operator[](size_t i) const
|
|
|
|
{ return this->vec_[i]; }
|
|
|
|
|
|
|
|
private:
|
|
|
|
std::vector<Symbol*> vec_;
|
|
|
|
};
|
|
|
|
|
2012-02-29 22:22:29 +01:00
|
|
|
// Type for mapping section index to uncompressed size and contents.
|
2010-07-12 19:59:58 +02:00
|
|
|
|
2012-02-29 22:22:29 +01:00
|
|
|
struct Compressed_section_info
|
|
|
|
{
|
|
|
|
section_size_type size;
|
|
|
|
const unsigned char* contents;
|
|
|
|
};
|
|
|
|
typedef std::map<unsigned int, Compressed_section_info> Compressed_section_map;
|
2010-07-12 19:59:58 +02:00
|
|
|
|
2011-04-12 02:44:48 +02:00
|
|
|
// Abstract base class for a regular object file, either a real object file
|
|
|
|
// or an incremental (unchanged) object. This is size and endian specific.
|
|
|
|
|
|
|
|
template<int size, bool big_endian>
|
2011-05-24 23:41:10 +02:00
|
|
|
class Sized_relobj : public Relobj
|
2011-04-12 02:44:48 +02:00
|
|
|
{
|
|
|
|
public:
|
2011-05-24 23:41:10 +02:00
|
|
|
typedef typename elfcpp::Elf_types<size>::Elf_Addr Address;
|
2011-04-12 02:44:48 +02:00
|
|
|
typedef Relobj::Symbols Symbols;
|
|
|
|
|
2011-05-24 23:41:10 +02:00
|
|
|
static const Address invalid_address = static_cast<Address>(0) - 1;
|
|
|
|
|
|
|
|
Sized_relobj(const std::string& name, Input_file* input_file)
|
|
|
|
: Relobj(name, input_file), local_got_offsets_(), section_offsets_()
|
2011-04-12 02:44:48 +02:00
|
|
|
{ }
|
|
|
|
|
2011-05-24 23:41:10 +02:00
|
|
|
Sized_relobj(const std::string& name, Input_file* input_file,
|
2011-04-12 02:44:48 +02:00
|
|
|
off_t offset)
|
2011-05-24 23:41:10 +02:00
|
|
|
: Relobj(name, input_file, offset), local_got_offsets_(), section_offsets_()
|
2011-04-12 02:44:48 +02:00
|
|
|
{ }
|
|
|
|
|
2011-05-24 23:41:10 +02:00
|
|
|
~Sized_relobj()
|
2011-04-12 02:44:48 +02:00
|
|
|
{ }
|
|
|
|
|
2011-05-24 23:41:10 +02:00
|
|
|
// If this is a regular object, return a pointer to the Sized_relobj_file
|
|
|
|
// object. Otherwise, return NULL.
|
|
|
|
virtual Sized_relobj_file<size, big_endian>*
|
|
|
|
sized_relobj()
|
|
|
|
{ return NULL; }
|
|
|
|
|
|
|
|
const virtual Sized_relobj_file<size, big_endian>*
|
|
|
|
sized_relobj() const
|
|
|
|
{ return NULL; }
|
|
|
|
|
|
|
|
// Checks if the offset of input section SHNDX within its output
|
|
|
|
// section is invalid.
|
|
|
|
bool
|
|
|
|
is_output_section_offset_invalid(unsigned int shndx) const
|
|
|
|
{ return this->get_output_section_offset(shndx) == invalid_address; }
|
|
|
|
|
|
|
|
// Get the offset of input section SHNDX within its output section.
|
|
|
|
// This is -1 if the input section requires a special mapping, such
|
|
|
|
// as a merge section. The output section can be found in the
|
|
|
|
// output_sections_ field of the parent class Relobj.
|
|
|
|
Address
|
|
|
|
get_output_section_offset(unsigned int shndx) const
|
|
|
|
{
|
|
|
|
gold_assert(shndx < this->section_offsets_.size());
|
|
|
|
return this->section_offsets_[shndx];
|
|
|
|
}
|
|
|
|
|
|
|
|
// Iterate over local symbols, calling a visitor class V for each GOT offset
|
|
|
|
// associated with a local symbol.
|
|
|
|
void
|
|
|
|
do_for_all_local_got_entries(Got_offset_list::Visitor* v) const;
|
|
|
|
|
2011-04-12 02:44:48 +02:00
|
|
|
protected:
|
|
|
|
typedef Relobj::Output_sections Output_sections;
|
|
|
|
|
2011-05-24 23:41:10 +02:00
|
|
|
// Clear the local symbol information.
|
|
|
|
void
|
|
|
|
clear_got_offsets()
|
|
|
|
{ this->local_got_offsets_.clear(); }
|
|
|
|
|
|
|
|
// Return the vector of section offsets.
|
|
|
|
std::vector<Address>&
|
|
|
|
section_offsets()
|
|
|
|
{ return this->section_offsets_; }
|
|
|
|
|
|
|
|
// Get the offset of a section.
|
|
|
|
uint64_t
|
|
|
|
do_output_section_offset(unsigned int shndx) const
|
|
|
|
{
|
|
|
|
Address off = this->get_output_section_offset(shndx);
|
|
|
|
if (off == invalid_address)
|
|
|
|
return -1ULL;
|
|
|
|
return off;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Set the offset of a section.
|
|
|
|
void
|
|
|
|
do_set_section_offset(unsigned int shndx, uint64_t off)
|
|
|
|
{
|
|
|
|
gold_assert(shndx < this->section_offsets_.size());
|
|
|
|
this->section_offsets_[shndx] =
|
|
|
|
(off == static_cast<uint64_t>(-1)
|
|
|
|
? invalid_address
|
|
|
|
: convert_types<Address, uint64_t>(off));
|
|
|
|
}
|
|
|
|
|
2011-12-19 22:07:16 +01:00
|
|
|
// Return whether the local symbol SYMNDX has a GOT offset of type
|
|
|
|
// GOT_TYPE.
|
|
|
|
bool
|
|
|
|
do_local_has_got_offset(unsigned int symndx, unsigned int got_type) const
|
|
|
|
{
|
|
|
|
Local_got_offsets::const_iterator p =
|
|
|
|
this->local_got_offsets_.find(symndx);
|
|
|
|
return (p != this->local_got_offsets_.end()
|
|
|
|
&& p->second->get_offset(got_type) != -1U);
|
|
|
|
}
|
|
|
|
|
|
|
|
// Return the GOT offset of type GOT_TYPE of the local symbol
|
|
|
|
// SYMNDX.
|
|
|
|
unsigned int
|
|
|
|
do_local_got_offset(unsigned int symndx, unsigned int got_type) const
|
|
|
|
{
|
|
|
|
Local_got_offsets::const_iterator p =
|
|
|
|
this->local_got_offsets_.find(symndx);
|
|
|
|
gold_assert(p != this->local_got_offsets_.end());
|
|
|
|
unsigned int off = p->second->get_offset(got_type);
|
|
|
|
gold_assert(off != -1U);
|
|
|
|
return off;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Set the GOT offset with type GOT_TYPE of the local symbol SYMNDX
|
|
|
|
// to GOT_OFFSET.
|
|
|
|
void
|
|
|
|
do_set_local_got_offset(unsigned int symndx, unsigned int got_type,
|
|
|
|
unsigned int got_offset)
|
|
|
|
{
|
|
|
|
Local_got_offsets::const_iterator p =
|
|
|
|
this->local_got_offsets_.find(symndx);
|
|
|
|
if (p != this->local_got_offsets_.end())
|
|
|
|
p->second->set_offset(got_type, got_offset);
|
|
|
|
else
|
|
|
|
{
|
|
|
|
Got_offset_list* g = new Got_offset_list(got_type, got_offset);
|
|
|
|
std::pair<Local_got_offsets::iterator, bool> ins =
|
|
|
|
this->local_got_offsets_.insert(std::make_pair(symndx, g));
|
|
|
|
gold_assert(ins.second);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-10-23 23:34:58 +02:00
|
|
|
// Return the word size of the object file.
|
|
|
|
virtual int
|
|
|
|
do_elfsize() const
|
|
|
|
{ return size; }
|
|
|
|
|
|
|
|
// Return TRUE if this is a big-endian object file.
|
|
|
|
virtual bool
|
|
|
|
do_is_big_endian() const
|
|
|
|
{ return big_endian; }
|
|
|
|
|
2011-04-12 02:44:48 +02:00
|
|
|
private:
|
2011-05-24 23:41:10 +02:00
|
|
|
// The GOT offsets of local symbols. This map also stores GOT offsets
|
|
|
|
// for tp-relative offsets for TLS symbols.
|
|
|
|
typedef Unordered_map<unsigned int, Got_offset_list*> Local_got_offsets;
|
|
|
|
|
|
|
|
// GOT offsets for local non-TLS symbols, and tp-relative offsets
|
|
|
|
// for TLS symbols, indexed by symbol number.
|
|
|
|
Local_got_offsets local_got_offsets_;
|
|
|
|
// For each input section, the offset of the input section in its
|
|
|
|
// output section. This is INVALID_ADDRESS if the input section requires a
|
|
|
|
// special mapping.
|
|
|
|
std::vector<Address> section_offsets_;
|
2011-04-12 02:44:48 +02:00
|
|
|
};
|
|
|
|
|
2006-08-19 00:29:20 +02:00
|
|
|
// A regular object file. This is size and endian specific.
|
2006-08-05 01:10:59 +02:00
|
|
|
|
|
|
|
template<int size, bool big_endian>
|
2011-05-24 23:41:10 +02:00
|
|
|
class Sized_relobj_file : public Sized_relobj<size, big_endian>
|
2006-08-05 01:10:59 +02:00
|
|
|
{
|
|
|
|
public:
|
2006-11-16 01:38:25 +01:00
|
|
|
typedef typename elfcpp::Elf_types<size>::Elf_Addr Address;
|
2011-05-24 23:41:10 +02:00
|
|
|
typedef typename Sized_relobj<size, big_endian>::Symbols Symbols;
|
2007-05-16 19:42:48 +02:00
|
|
|
typedef std::vector<Symbol_value<size> > Local_values;
|
2006-11-16 01:38:25 +01:00
|
|
|
|
2008-09-29 23:10:26 +02:00
|
|
|
static const Address invalid_address = static_cast<Address>(0) - 1;
|
|
|
|
|
2010-09-09 01:54:51 +02:00
|
|
|
enum Compute_final_local_value_status
|
|
|
|
{
|
|
|
|
// No error.
|
|
|
|
CFLV_OK,
|
|
|
|
// An error occurred.
|
|
|
|
CFLV_ERROR,
|
|
|
|
// The local symbol has no output section.
|
|
|
|
CFLV_DISCARDED
|
|
|
|
};
|
|
|
|
|
2011-05-24 23:41:10 +02:00
|
|
|
Sized_relobj_file(const std::string& name,
|
|
|
|
Input_file* input_file,
|
|
|
|
off_t offset,
|
|
|
|
const typename elfcpp::Ehdr<size, big_endian>&);
|
2006-08-05 01:10:59 +02:00
|
|
|
|
2011-05-24 23:41:10 +02:00
|
|
|
~Sized_relobj_file();
|
2009-01-28 03:25:33 +01:00
|
|
|
|
2009-08-19 01:49:29 +02:00
|
|
|
// Set up the object file based on TARGET.
|
2006-08-05 01:10:59 +02:00
|
|
|
void
|
2009-10-09 Doug Kwan <dougkwan@google.com>
* layout.cc (Layout::make_output_section): Call target hook to make
ordinary output section.
(Layout::finalize): Adjust parameter list of call the
Target::may_relax().
* layout.h (class Layout::section_list): New method.
* merge.h (Output_merge_base::entsize): Change visibility to public.
(Output_merge_base::is_string, Output_merge_base::do_is_string):
New methods.
(Output_merge_string::do_is_string): New method.
* object.cc (Sized_relobj::do_setup): renamed from
Sized_relobj::set_up.
* object.h (Sized_relobj::adjust_shndx,
Sized_relobj::initializ_input_to_output_maps,
Sized_relobj::free_input_to_output_maps): Change visibilities to
protected.
(Sized_relobj::setup): Virtualize.
(Sized_relobj::do_setup): New method declaration.
(Sized_relobj::invalidate_section_offset,
Sized_relobj::do_invalidate_section_offset): New method decfinitions.
(Sized_relobj::elf_file, Sized_relobj::local_values): New methods.
* options.cc (parse_int): New function.
* options.h (parse_int): New declaration.
(DEFINE_int): New macro.
(stub_group_size): New option.
* output.cc (Output_section::Output_section): Initialize memebers
merge_section_map_, merge_section_by_properties_map_,
relaxed_input_section_map_, is_relaxed_input_section_map_valid_.
(Output_section::add_input_section): Handled deferred code-fill
generation and remove an old comment.
(Output_section::add_relaxed_input_section): New method definition.
(Output_section::add_merge_input_section): Use merge section by
properties map to speed to search. Update merge section maps
as appropriate.
(Output_section::build_relaxation_map): New method definition.
(Output_section::convert_input_sections_in_list_to_relaxed_sections):
Same.
(Output_section::relax_input_section): Renamed to
Output_section::convert_input_sections_to_relaxed_sections and change
interface to take a vector of pointers to relaxed sections.
(Output_section::find_merge_section,
Output_section::find_relaxed_input_section): New method definitions.
(Output_section::is_input_address_mapped,
Output_section::output_offset, Output_section::output_address):
Use output section data maps to speed up searching.
(Output_section::find_starting_output_address): Add comments.
(Output_section::do_write,
Output_section::write_to_postprocessing_buffer): Do code-fill
generation as appropriate.
(Output_section::get_input_sections): Invalidate relaxed input section
map.
(Output_section::restore_states): Adjust type of checkpoint .
Invalidate relaxed input section map.
* output.h (Output_merge_base): New class declaration.
(Input_section_specifier): New class defintion.
(class Output_relaxed_input_section) Change base class to
Output_section_data_build.
(Output_relaxed_input_section::Output_relaxed_input_section): Adjust
base class initializer.
(Output_section::add_relaxed_input_section): New method declaration.
(Output_section::Input_section): Change visibility to protected.
(Output_section::Input_section::relobj,
Output_section::Input_section::shndx): Handle relaxed input sections.
Output_section::input_sections) Change visibility to protected. Also
define overload to return a non-const pointer.
(Output_section::Merge_section_properties): New class defintion.
(Output_section::Merge_section_by_properties_map,
Output_section::Output_section_data_by_input_section_map,
Output_section::Relaxation_map): New types.
(Output_section::relax_input_section): Rename method to
Output_section::convert_input_sections_to_relaxed_sections and change
interface to take a vector of relaxed section pointers.
(Output_section::find_merge_section,
Output_section::find_relaxed_input_section,
Output_section::build_relaxation_map,
Output_section::convert_input_sections_in_list_to_relaxed_sections):
New method declarations.
(Output_section::merge_section_map_
Output_section::merge_section_by_properties_map_,
Output_section::relaxed_input_section_map_,
Output_section::is_relaxed_input_section_map_valid_,
Output_section::generate_code_fills_at_write_): New data members.
* script-sections.cc
(Output_section_element_input::set_section_addresses): Call
current_data_size and addralign methods of relaxed input sections.
(Orphan_output_section::set_section_addresses): Call current_data_size
and addralign methods of relaxed input sections.
* symtab.cc (Symbol_table::compute_final_value): Extract template
from the body of Symbol_table::sized_finalize_symbol.
(Symbol_table::sized_finalized_symbol): Call
Symbol_table::compute_final_value.
* symtab.h (Symbol_table::Compute_final_value_status): New enum type.
(Symbol_table::compute_final_value): New templated method declaration.
* target.cc (Target::do_make_output_section): New method defintion.
* target.h (Target::make_output_section): New method declaration.
(Target::relax): Add more parameters for input objects, symbol table
and layout. Adjust call to do_relax.
(Target::do_make_output_section): New method declaration.
(Target::do_relax): Add parameters for input objects, symbol table
and layout.
2009-10-10 01:18:19 +02:00
|
|
|
setup()
|
|
|
|
{ this->do_setup(); }
|
2006-08-05 01:10:59 +02:00
|
|
|
|
2011-05-24 23:41:10 +02:00
|
|
|
// Return a pointer to the Sized_relobj_file object.
|
|
|
|
Sized_relobj_file<size, big_endian>*
|
|
|
|
sized_relobj()
|
|
|
|
{ return this; }
|
|
|
|
|
|
|
|
const Sized_relobj_file<size, big_endian>*
|
|
|
|
sized_relobj() const
|
|
|
|
{ return this; }
|
|
|
|
|
2011-08-01 20:25:22 +02:00
|
|
|
// Return the ELF file type.
|
|
|
|
int
|
|
|
|
e_type() const
|
|
|
|
{ return this->e_type_; }
|
|
|
|
|
2008-05-21 23:37:44 +02:00
|
|
|
// Return the number of symbols. This is only valid after
|
|
|
|
// Object::add_symbols has been called.
|
|
|
|
unsigned int
|
|
|
|
symbol_count() const
|
|
|
|
{ return this->local_symbol_count_ + this->symbols_.size(); }
|
|
|
|
|
2007-11-09 08:00:15 +01:00
|
|
|
// If SYM is the index of a global symbol in the object file's
|
|
|
|
// symbol table, return the Symbol object. Otherwise, return NULL.
|
|
|
|
Symbol*
|
|
|
|
global_symbol(unsigned int sym) const
|
|
|
|
{
|
|
|
|
if (sym >= this->local_symbol_count_)
|
|
|
|
{
|
|
|
|
gold_assert(sym - this->local_symbol_count_ < this->symbols_.size());
|
|
|
|
return this->symbols_[sym - this->local_symbol_count_];
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Return the section index of symbol SYM. Set *VALUE to its value
|
2008-04-19 20:30:58 +02:00
|
|
|
// in the object file. Set *IS_ORDINARY if this is an ordinary
|
|
|
|
// section index, not a special code between SHN_LORESERVE and
|
|
|
|
// SHN_HIRESERVE. Note that for a symbol which is not defined in
|
|
|
|
// this object file, this will set *VALUE to 0 and return SHN_UNDEF;
|
|
|
|
// it will not return the final value of the symbol in the link.
|
2007-11-09 08:00:15 +01:00
|
|
|
unsigned int
|
2008-04-19 20:30:58 +02:00
|
|
|
symbol_section_and_value(unsigned int sym, Address* value, bool* is_ordinary);
|
2007-11-09 08:00:15 +01:00
|
|
|
|
|
|
|
// Return a pointer to the Symbol_value structure which holds the
|
|
|
|
// value of a local symbol.
|
|
|
|
const Symbol_value<size>*
|
|
|
|
local_symbol(unsigned int sym) const
|
|
|
|
{
|
|
|
|
gold_assert(sym < this->local_values_.size());
|
|
|
|
return &this->local_values_[sym];
|
|
|
|
}
|
|
|
|
|
2006-11-16 01:38:25 +01:00
|
|
|
// Return the index of local symbol SYM in the ordinary symbol
|
|
|
|
// table. A value of -1U means that the symbol is not being output.
|
|
|
|
unsigned int
|
|
|
|
symtab_index(unsigned int sym) const
|
|
|
|
{
|
2007-05-16 19:42:48 +02:00
|
|
|
gold_assert(sym < this->local_values_.size());
|
|
|
|
return this->local_values_[sym].output_symtab_index();
|
2006-11-16 01:38:25 +01:00
|
|
|
}
|
|
|
|
|
2007-12-06 06:55:50 +01:00
|
|
|
// Return the index of local symbol SYM in the dynamic symbol
|
|
|
|
// table. A value of -1U means that the symbol is not being output.
|
|
|
|
unsigned int
|
|
|
|
dynsym_index(unsigned int sym) const
|
|
|
|
{
|
|
|
|
gold_assert(sym < this->local_values_.size());
|
|
|
|
return this->local_values_[sym].output_dynsym_index();
|
|
|
|
}
|
|
|
|
|
2008-02-06 09:13:50 +01:00
|
|
|
// Return the input section index of local symbol SYM.
|
|
|
|
unsigned int
|
2008-04-19 20:30:58 +02:00
|
|
|
local_symbol_input_shndx(unsigned int sym, bool* is_ordinary) const
|
2008-02-06 09:13:50 +01:00
|
|
|
{
|
|
|
|
gold_assert(sym < this->local_values_.size());
|
2008-04-19 20:30:58 +02:00
|
|
|
return this->local_values_[sym].input_shndx(is_ordinary);
|
2008-02-06 09:13:50 +01:00
|
|
|
}
|
|
|
|
|
2010-03-03 20:31:54 +01:00
|
|
|
// Record that local symbol SYM must be in the output symbol table.
|
|
|
|
void
|
|
|
|
set_must_have_output_symtab_entry(unsigned int sym)
|
|
|
|
{
|
|
|
|
gold_assert(sym < this->local_values_.size());
|
|
|
|
this->local_values_[sym].set_must_have_output_symtab_entry();
|
|
|
|
}
|
|
|
|
|
2008-03-17 00:51:19 +01:00
|
|
|
// Record that local symbol SYM needs a dynamic symbol entry.
|
2007-12-06 06:55:50 +01:00
|
|
|
void
|
|
|
|
set_needs_output_dynsym_entry(unsigned int sym)
|
|
|
|
{
|
|
|
|
gold_assert(sym < this->local_values_.size());
|
|
|
|
this->local_values_[sym].set_needs_output_dynsym_entry();
|
|
|
|
}
|
|
|
|
|
2010-08-20 00:50:16 +02:00
|
|
|
// Return whether the local symbol SYMNDX has a PLT offset.
|
|
|
|
bool
|
|
|
|
local_has_plt_offset(unsigned int symndx) const;
|
|
|
|
|
|
|
|
// Set the PLT offset of the local symbol SYMNDX.
|
|
|
|
void
|
|
|
|
set_local_plt_offset(unsigned int symndx, unsigned int plt_offset);
|
|
|
|
|
2012-09-25 02:59:25 +02:00
|
|
|
// Adjust this local symbol value. Return false if the symbol
|
|
|
|
// should be discarded from the output file.
|
|
|
|
bool
|
|
|
|
adjust_local_symbol(Symbol_value<size>* lv) const
|
|
|
|
{ return this->do_adjust_local_symbol(lv); }
|
|
|
|
|
2007-11-02 04:28:52 +01:00
|
|
|
// Return the name of the symbol that spans the given offset in the
|
|
|
|
// specified section in this object. This is used only for error
|
|
|
|
// messages and is not particularly efficient.
|
|
|
|
bool
|
|
|
|
get_symbol_location_info(unsigned int shndx, off_t offset,
|
|
|
|
Symbol_location_info* info);
|
|
|
|
|
2008-05-01 03:23:21 +02:00
|
|
|
// Look for a kept section corresponding to the given discarded section,
|
|
|
|
// and return its output address. This is used only for relocations in
|
|
|
|
// debugging sections.
|
|
|
|
Address
|
|
|
|
map_to_kept_section(unsigned int shndx, bool* found) const;
|
|
|
|
|
2010-09-09 01:54:51 +02:00
|
|
|
// Compute final local symbol value. R_SYM is the local symbol index.
|
|
|
|
// LV_IN points to a local symbol value containing the input value.
|
|
|
|
// LV_OUT points to a local symbol value storing the final output value,
|
|
|
|
// which must not be a merged symbol value since before calling this
|
|
|
|
// method to avoid memory leak. SYMTAB points to a symbol table.
|
|
|
|
//
|
|
|
|
// The method returns a status code at return. If the return status is
|
|
|
|
// CFLV_OK, *LV_OUT contains the final value. If the return status is
|
|
|
|
// CFLV_ERROR, *LV_OUT is 0. If the return status is CFLV_DISCARDED,
|
|
|
|
// *LV_OUT is not modified.
|
|
|
|
Compute_final_local_value_status
|
|
|
|
compute_final_local_value(unsigned int r_sym,
|
|
|
|
const Symbol_value<size>* lv_in,
|
|
|
|
Symbol_value<size>* lv_out,
|
|
|
|
const Symbol_table* symtab);
|
|
|
|
|
2007-12-14 06:24:17 +01:00
|
|
|
protected:
|
2011-05-24 23:41:10 +02:00
|
|
|
typedef typename Sized_relobj<size, big_endian>::Output_sections
|
2011-04-12 02:44:48 +02:00
|
|
|
Output_sections;
|
|
|
|
|
2009-10-09 Doug Kwan <dougkwan@google.com>
* layout.cc (Layout::make_output_section): Call target hook to make
ordinary output section.
(Layout::finalize): Adjust parameter list of call the
Target::may_relax().
* layout.h (class Layout::section_list): New method.
* merge.h (Output_merge_base::entsize): Change visibility to public.
(Output_merge_base::is_string, Output_merge_base::do_is_string):
New methods.
(Output_merge_string::do_is_string): New method.
* object.cc (Sized_relobj::do_setup): renamed from
Sized_relobj::set_up.
* object.h (Sized_relobj::adjust_shndx,
Sized_relobj::initializ_input_to_output_maps,
Sized_relobj::free_input_to_output_maps): Change visibilities to
protected.
(Sized_relobj::setup): Virtualize.
(Sized_relobj::do_setup): New method declaration.
(Sized_relobj::invalidate_section_offset,
Sized_relobj::do_invalidate_section_offset): New method decfinitions.
(Sized_relobj::elf_file, Sized_relobj::local_values): New methods.
* options.cc (parse_int): New function.
* options.h (parse_int): New declaration.
(DEFINE_int): New macro.
(stub_group_size): New option.
* output.cc (Output_section::Output_section): Initialize memebers
merge_section_map_, merge_section_by_properties_map_,
relaxed_input_section_map_, is_relaxed_input_section_map_valid_.
(Output_section::add_input_section): Handled deferred code-fill
generation and remove an old comment.
(Output_section::add_relaxed_input_section): New method definition.
(Output_section::add_merge_input_section): Use merge section by
properties map to speed to search. Update merge section maps
as appropriate.
(Output_section::build_relaxation_map): New method definition.
(Output_section::convert_input_sections_in_list_to_relaxed_sections):
Same.
(Output_section::relax_input_section): Renamed to
Output_section::convert_input_sections_to_relaxed_sections and change
interface to take a vector of pointers to relaxed sections.
(Output_section::find_merge_section,
Output_section::find_relaxed_input_section): New method definitions.
(Output_section::is_input_address_mapped,
Output_section::output_offset, Output_section::output_address):
Use output section data maps to speed up searching.
(Output_section::find_starting_output_address): Add comments.
(Output_section::do_write,
Output_section::write_to_postprocessing_buffer): Do code-fill
generation as appropriate.
(Output_section::get_input_sections): Invalidate relaxed input section
map.
(Output_section::restore_states): Adjust type of checkpoint .
Invalidate relaxed input section map.
* output.h (Output_merge_base): New class declaration.
(Input_section_specifier): New class defintion.
(class Output_relaxed_input_section) Change base class to
Output_section_data_build.
(Output_relaxed_input_section::Output_relaxed_input_section): Adjust
base class initializer.
(Output_section::add_relaxed_input_section): New method declaration.
(Output_section::Input_section): Change visibility to protected.
(Output_section::Input_section::relobj,
Output_section::Input_section::shndx): Handle relaxed input sections.
Output_section::input_sections) Change visibility to protected. Also
define overload to return a non-const pointer.
(Output_section::Merge_section_properties): New class defintion.
(Output_section::Merge_section_by_properties_map,
Output_section::Output_section_data_by_input_section_map,
Output_section::Relaxation_map): New types.
(Output_section::relax_input_section): Rename method to
Output_section::convert_input_sections_to_relaxed_sections and change
interface to take a vector of relaxed section pointers.
(Output_section::find_merge_section,
Output_section::find_relaxed_input_section,
Output_section::build_relaxation_map,
Output_section::convert_input_sections_in_list_to_relaxed_sections):
New method declarations.
(Output_section::merge_section_map_
Output_section::merge_section_by_properties_map_,
Output_section::relaxed_input_section_map_,
Output_section::is_relaxed_input_section_map_valid_,
Output_section::generate_code_fills_at_write_): New data members.
* script-sections.cc
(Output_section_element_input::set_section_addresses): Call
current_data_size and addralign methods of relaxed input sections.
(Orphan_output_section::set_section_addresses): Call current_data_size
and addralign methods of relaxed input sections.
* symtab.cc (Symbol_table::compute_final_value): Extract template
from the body of Symbol_table::sized_finalize_symbol.
(Symbol_table::sized_finalized_symbol): Call
Symbol_table::compute_final_value.
* symtab.h (Symbol_table::Compute_final_value_status): New enum type.
(Symbol_table::compute_final_value): New templated method declaration.
* target.cc (Target::do_make_output_section): New method defintion.
* target.h (Target::make_output_section): New method declaration.
(Target::relax): Add more parameters for input objects, symbol table
and layout. Adjust call to do_relax.
(Target::do_make_output_section): New method declaration.
(Target::do_relax): Add parameters for input objects, symbol table
and layout.
2009-10-10 01:18:19 +02:00
|
|
|
// Set up.
|
|
|
|
virtual void
|
|
|
|
do_setup();
|
|
|
|
|
2006-09-22 00:13:18 +02:00
|
|
|
// Read the symbols.
|
2006-08-05 01:10:59 +02:00
|
|
|
void
|
2006-10-06 22:40:16 +02:00
|
|
|
do_read_symbols(Read_symbols_data*);
|
2006-08-19 00:29:20 +02:00
|
|
|
|
2011-12-19 22:07:16 +01:00
|
|
|
// Return the value of a local symbol.
|
|
|
|
uint64_t
|
|
|
|
do_local_symbol_value(unsigned int symndx, uint64_t addend) const
|
|
|
|
{
|
|
|
|
const Symbol_value<size>* symval = this->local_symbol(symndx);
|
|
|
|
return symval->value(this, addend);
|
|
|
|
}
|
|
|
|
|
|
|
|
// Return the PLT offset for a local symbol. It is an error to call
|
|
|
|
// this if it doesn't have one.
|
|
|
|
unsigned int
|
|
|
|
do_local_plt_offset(unsigned int symndx) const;
|
|
|
|
|
2012-09-12 20:29:18 +02:00
|
|
|
// Return whether local symbol SYMNDX is a TLS symbol.
|
|
|
|
bool
|
|
|
|
do_local_is_tls(unsigned int symndx) const
|
|
|
|
{ return this->local_symbol(symndx)->is_tls_symbol(); }
|
|
|
|
|
2007-12-14 06:24:17 +01:00
|
|
|
// Return the number of local symbols.
|
|
|
|
unsigned int
|
|
|
|
do_local_symbol_count() const
|
|
|
|
{ return this->local_symbol_count_; }
|
|
|
|
|
2011-04-25 22:28:48 +02:00
|
|
|
// Return the number of local symbols in the output symbol table.
|
|
|
|
unsigned int
|
|
|
|
do_output_local_symbol_count() const
|
|
|
|
{ return this->output_local_symbol_count_; }
|
|
|
|
|
|
|
|
// Return the number of local symbols in the output symbol table.
|
|
|
|
off_t
|
|
|
|
do_local_symbol_offset() const
|
|
|
|
{ return this->local_symbol_offset_; }
|
|
|
|
|
2006-11-14 20:21:05 +01:00
|
|
|
// Lay out the input sections.
|
|
|
|
void
|
2007-09-21 09:20:01 +02:00
|
|
|
do_layout(Symbol_table*, Layout*, Read_symbols_data*);
|
2006-11-14 20:21:05 +01:00
|
|
|
|
2008-12-23 03:02:20 +01:00
|
|
|
// Layout sections whose layout was deferred while waiting for
|
|
|
|
// input files from a plugin.
|
|
|
|
void
|
|
|
|
do_layout_deferred_sections(Layout*);
|
|
|
|
|
2006-10-06 22:40:16 +02:00
|
|
|
// Add the symbols to the symbol table.
|
|
|
|
void
|
2009-02-13 20:04:45 +01:00
|
|
|
do_add_symbols(Symbol_table*, Read_symbols_data*, Layout*);
|
2010-03-22 15:18:24 +01:00
|
|
|
|
|
|
|
Archive::Should_include
|
2010-08-02 15:34:33 +02:00
|
|
|
do_should_include_member(Symbol_table* symtab, Layout*, Read_symbols_data*,
|
2010-03-22 15:18:24 +01:00
|
|
|
std::string* why);
|
2006-09-22 00:13:18 +02:00
|
|
|
|
2011-03-30 03:31:57 +02:00
|
|
|
// Iterate over global symbols, calling a visitor class V for each.
|
|
|
|
void
|
|
|
|
do_for_all_global_symbols(Read_symbols_data* sd,
|
|
|
|
Library_base::Symbol_visitor_base* v);
|
|
|
|
|
2006-10-20 22:40:49 +02:00
|
|
|
// Read the relocs.
|
|
|
|
void
|
|
|
|
do_read_relocs(Read_relocs_data*);
|
|
|
|
|
2009-01-28 03:25:33 +01:00
|
|
|
// Process the relocs to find list of referenced sections. Used only
|
|
|
|
// during garbage collection.
|
|
|
|
void
|
* object.h (class Relobj): Drop options parameter from
gc_process_relocs, scan_relocs, relocate, do_gc_process_relocs,
do_scan_relocs, do_relocate. Change all callers.
(class Sized_relobj): Drop options parameters from
do_gc_process_relocs, do_scan_relocs, do_relocate,
do_relocate_sections, relocate_sections, emit_relocs_scan,
emit_relocs_scan_reltype. Change all callers.
(struct Relocate_info): Remove options field and all references to
it.
* reloc.h (class Read_relocs): Remove options constructor
parameter and options_ field. Change all callers.
(class Gc_process_relocs, class Scan_relocs): Likewise.
(class Relocate_task): Likewise.
* target-reloc.h (scan_relocs): Remove options parameter. Change
all callers.
(scan_relocatable_relocs): Likewise.
* target.h (class Sized_target): Remove options parameter from
gc_process_relocs, scan_relocs, scan_relocatable_relocs. Change
all callers.
* gc.h (gc_process_relocs): Remove options parameter. Change all
callers.
* arm.cc: Update functions to remove options parameters.
* i386.cc: Likewise.
* powerpc.cc: Likewise.
* sparc.cc: Likewise.
* x86_64.cc: Likewise.
* testsuite/testfile.cc: Likewise.
2009-10-29 06:16:23 +01:00
|
|
|
do_gc_process_relocs(Symbol_table*, Layout*, Read_relocs_data*);
|
2009-01-28 03:25:33 +01:00
|
|
|
|
2006-10-20 22:40:49 +02:00
|
|
|
// Scan the relocs and adjust the symbol table.
|
|
|
|
void
|
* object.h (class Relobj): Drop options parameter from
gc_process_relocs, scan_relocs, relocate, do_gc_process_relocs,
do_scan_relocs, do_relocate. Change all callers.
(class Sized_relobj): Drop options parameters from
do_gc_process_relocs, do_scan_relocs, do_relocate,
do_relocate_sections, relocate_sections, emit_relocs_scan,
emit_relocs_scan_reltype. Change all callers.
(struct Relocate_info): Remove options field and all references to
it.
* reloc.h (class Read_relocs): Remove options constructor
parameter and options_ field. Change all callers.
(class Gc_process_relocs, class Scan_relocs): Likewise.
(class Relocate_task): Likewise.
* target-reloc.h (scan_relocs): Remove options parameter. Change
all callers.
(scan_relocatable_relocs): Likewise.
* target.h (class Sized_target): Remove options parameter from
gc_process_relocs, scan_relocs, scan_relocatable_relocs. Change
all callers.
* gc.h (gc_process_relocs): Remove options parameter. Change all
callers.
* arm.cc: Update functions to remove options parameters.
* i386.cc: Likewise.
* powerpc.cc: Likewise.
* sparc.cc: Likewise.
* x86_64.cc: Likewise.
* testsuite/testfile.cc: Likewise.
2009-10-29 06:16:23 +01:00
|
|
|
do_scan_relocs(Symbol_table*, Layout*, Read_relocs_data*);
|
2006-10-20 22:40:49 +02:00
|
|
|
|
2007-12-06 06:55:50 +01:00
|
|
|
// Count the local symbols.
|
|
|
|
void
|
|
|
|
do_count_local_symbols(Stringpool_template<char>*,
|
|
|
|
Stringpool_template<char>*);
|
|
|
|
|
2006-09-28 00:53:42 +02:00
|
|
|
// Finalize the local symbols.
|
2006-11-16 01:38:25 +01:00
|
|
|
unsigned int
|
2009-08-05 22:51:56 +02:00
|
|
|
do_finalize_local_symbols(unsigned int, off_t, Symbol_table*);
|
2007-12-06 06:55:50 +01:00
|
|
|
|
|
|
|
// Set the offset where local dynamic symbol information will be stored.
|
|
|
|
unsigned int
|
|
|
|
do_set_local_dynsym_indexes(unsigned int);
|
|
|
|
|
|
|
|
// Set the offset where local dynamic symbol information will be stored.
|
|
|
|
unsigned int
|
|
|
|
do_set_local_dynsym_offset(off_t);
|
2006-09-28 00:53:42 +02:00
|
|
|
|
2006-09-29 21:58:17 +02:00
|
|
|
// Relocate the input sections and write out the local symbols.
|
|
|
|
void
|
* object.h (class Relobj): Drop options parameter from
gc_process_relocs, scan_relocs, relocate, do_gc_process_relocs,
do_scan_relocs, do_relocate. Change all callers.
(class Sized_relobj): Drop options parameters from
do_gc_process_relocs, do_scan_relocs, do_relocate,
do_relocate_sections, relocate_sections, emit_relocs_scan,
emit_relocs_scan_reltype. Change all callers.
(struct Relocate_info): Remove options field and all references to
it.
* reloc.h (class Read_relocs): Remove options constructor
parameter and options_ field. Change all callers.
(class Gc_process_relocs, class Scan_relocs): Likewise.
(class Relocate_task): Likewise.
* target-reloc.h (scan_relocs): Remove options parameter. Change
all callers.
(scan_relocatable_relocs): Likewise.
* target.h (class Sized_target): Remove options parameter from
gc_process_relocs, scan_relocs, scan_relocatable_relocs. Change
all callers.
* gc.h (gc_process_relocs): Remove options parameter. Change all
callers.
* arm.cc: Update functions to remove options parameters.
* i386.cc: Likewise.
* powerpc.cc: Likewise.
* sparc.cc: Likewise.
* x86_64.cc: Likewise.
* testsuite/testfile.cc: Likewise.
2009-10-29 06:16:23 +01:00
|
|
|
do_relocate(const Symbol_table* symtab, const Layout*, Output_file* of);
|
2006-10-20 22:40:49 +02:00
|
|
|
|
2008-02-04 06:43:05 +01:00
|
|
|
// Get the size of a section.
|
|
|
|
uint64_t
|
|
|
|
do_section_size(unsigned int shndx)
|
|
|
|
{ return this->elf_file_.section_size(shndx); }
|
|
|
|
|
2006-10-20 22:40:49 +02:00
|
|
|
// Get the name of a section.
|
|
|
|
std::string
|
2006-11-07 19:51:39 +01:00
|
|
|
do_section_name(unsigned int shndx)
|
|
|
|
{ return this->elf_file_.section_name(shndx); }
|
2006-09-29 21:58:17 +02:00
|
|
|
|
2006-11-07 19:51:39 +01:00
|
|
|
// Return the location of the contents of a section.
|
2012-03-21 20:02:22 +01:00
|
|
|
const unsigned char*
|
|
|
|
do_section_contents(unsigned int shndx, section_size_type* plen,
|
|
|
|
bool cache)
|
|
|
|
{
|
|
|
|
Object::Location loc(this->elf_file_.section_contents(shndx));
|
|
|
|
*plen = convert_to_section_size_type(loc.data_size);
|
|
|
|
if (*plen == 0)
|
|
|
|
{
|
|
|
|
static const unsigned char empty[1] = { '\0' };
|
|
|
|
return empty;
|
|
|
|
}
|
|
|
|
return this->get_view(loc.file_offset, *plen, true, cache);
|
|
|
|
}
|
2006-11-06 23:46:08 +01:00
|
|
|
|
2006-11-29 18:56:40 +01:00
|
|
|
// Return section flags.
|
|
|
|
uint64_t
|
2009-08-05 22:51:56 +02:00
|
|
|
do_section_flags(unsigned int shndx);
|
|
|
|
|
|
|
|
// Return section entsize.
|
|
|
|
uint64_t
|
|
|
|
do_section_entsize(unsigned int shndx);
|
2006-11-29 18:56:40 +01:00
|
|
|
|
2008-02-07 02:51:25 +01:00
|
|
|
// Return section address.
|
|
|
|
uint64_t
|
|
|
|
do_section_address(unsigned int shndx)
|
|
|
|
{ return this->elf_file_.section_addr(shndx); }
|
|
|
|
|
2007-11-09 08:00:15 +01:00
|
|
|
// Return section type.
|
|
|
|
unsigned int
|
|
|
|
do_section_type(unsigned int shndx)
|
|
|
|
{ return this->elf_file_.section_type(shndx); }
|
|
|
|
|
2007-11-02 04:28:52 +01:00
|
|
|
// Return the section link field.
|
|
|
|
unsigned int
|
|
|
|
do_section_link(unsigned int shndx)
|
|
|
|
{ return this->elf_file_.section_link(shndx); }
|
|
|
|
|
2007-11-10 00:16:54 +01:00
|
|
|
// Return the section info field.
|
|
|
|
unsigned int
|
|
|
|
do_section_info(unsigned int shndx)
|
|
|
|
{ return this->elf_file_.section_info(shndx); }
|
|
|
|
|
2008-02-04 06:43:05 +01:00
|
|
|
// Return the section alignment.
|
|
|
|
uint64_t
|
|
|
|
do_section_addralign(unsigned int shndx)
|
|
|
|
{ return this->elf_file_.section_addralign(shndx); }
|
|
|
|
|
2008-04-19 20:30:58 +02:00
|
|
|
// Return the Xindex structure to use.
|
|
|
|
Xindex*
|
|
|
|
do_initialize_xindex();
|
|
|
|
|
2008-07-23 00:08:43 +02:00
|
|
|
// Get symbol counts.
|
|
|
|
void
|
|
|
|
do_get_global_symbol_counts(const Symbol_table*, size_t*, size_t*) const;
|
|
|
|
|
2010-01-05 22:52:51 +01:00
|
|
|
// Get the global symbols.
|
|
|
|
const Symbols*
|
|
|
|
do_get_global_symbols() const
|
|
|
|
{ return &this->symbols_; }
|
|
|
|
|
2009-10-09 Doug Kwan <dougkwan@google.com>
* layout.cc (Layout::make_output_section): Call target hook to make
ordinary output section.
(Layout::finalize): Adjust parameter list of call the
Target::may_relax().
* layout.h (class Layout::section_list): New method.
* merge.h (Output_merge_base::entsize): Change visibility to public.
(Output_merge_base::is_string, Output_merge_base::do_is_string):
New methods.
(Output_merge_string::do_is_string): New method.
* object.cc (Sized_relobj::do_setup): renamed from
Sized_relobj::set_up.
* object.h (Sized_relobj::adjust_shndx,
Sized_relobj::initializ_input_to_output_maps,
Sized_relobj::free_input_to_output_maps): Change visibilities to
protected.
(Sized_relobj::setup): Virtualize.
(Sized_relobj::do_setup): New method declaration.
(Sized_relobj::invalidate_section_offset,
Sized_relobj::do_invalidate_section_offset): New method decfinitions.
(Sized_relobj::elf_file, Sized_relobj::local_values): New methods.
* options.cc (parse_int): New function.
* options.h (parse_int): New declaration.
(DEFINE_int): New macro.
(stub_group_size): New option.
* output.cc (Output_section::Output_section): Initialize memebers
merge_section_map_, merge_section_by_properties_map_,
relaxed_input_section_map_, is_relaxed_input_section_map_valid_.
(Output_section::add_input_section): Handled deferred code-fill
generation and remove an old comment.
(Output_section::add_relaxed_input_section): New method definition.
(Output_section::add_merge_input_section): Use merge section by
properties map to speed to search. Update merge section maps
as appropriate.
(Output_section::build_relaxation_map): New method definition.
(Output_section::convert_input_sections_in_list_to_relaxed_sections):
Same.
(Output_section::relax_input_section): Renamed to
Output_section::convert_input_sections_to_relaxed_sections and change
interface to take a vector of pointers to relaxed sections.
(Output_section::find_merge_section,
Output_section::find_relaxed_input_section): New method definitions.
(Output_section::is_input_address_mapped,
Output_section::output_offset, Output_section::output_address):
Use output section data maps to speed up searching.
(Output_section::find_starting_output_address): Add comments.
(Output_section::do_write,
Output_section::write_to_postprocessing_buffer): Do code-fill
generation as appropriate.
(Output_section::get_input_sections): Invalidate relaxed input section
map.
(Output_section::restore_states): Adjust type of checkpoint .
Invalidate relaxed input section map.
* output.h (Output_merge_base): New class declaration.
(Input_section_specifier): New class defintion.
(class Output_relaxed_input_section) Change base class to
Output_section_data_build.
(Output_relaxed_input_section::Output_relaxed_input_section): Adjust
base class initializer.
(Output_section::add_relaxed_input_section): New method declaration.
(Output_section::Input_section): Change visibility to protected.
(Output_section::Input_section::relobj,
Output_section::Input_section::shndx): Handle relaxed input sections.
Output_section::input_sections) Change visibility to protected. Also
define overload to return a non-const pointer.
(Output_section::Merge_section_properties): New class defintion.
(Output_section::Merge_section_by_properties_map,
Output_section::Output_section_data_by_input_section_map,
Output_section::Relaxation_map): New types.
(Output_section::relax_input_section): Rename method to
Output_section::convert_input_sections_to_relaxed_sections and change
interface to take a vector of relaxed section pointers.
(Output_section::find_merge_section,
Output_section::find_relaxed_input_section,
Output_section::build_relaxation_map,
Output_section::convert_input_sections_in_list_to_relaxed_sections):
New method declarations.
(Output_section::merge_section_map_
Output_section::merge_section_by_properties_map_,
Output_section::relaxed_input_section_map_,
Output_section::is_relaxed_input_section_map_valid_,
Output_section::generate_code_fills_at_write_): New data members.
* script-sections.cc
(Output_section_element_input::set_section_addresses): Call
current_data_size and addralign methods of relaxed input sections.
(Orphan_output_section::set_section_addresses): Call current_data_size
and addralign methods of relaxed input sections.
* symtab.cc (Symbol_table::compute_final_value): Extract template
from the body of Symbol_table::sized_finalize_symbol.
(Symbol_table::sized_finalized_symbol): Call
Symbol_table::compute_final_value.
* symtab.h (Symbol_table::Compute_final_value_status): New enum type.
(Symbol_table::compute_final_value): New templated method declaration.
* target.cc (Target::do_make_output_section): New method defintion.
* target.h (Target::make_output_section): New method declaration.
(Target::relax): Add more parameters for input objects, symbol table
and layout. Adjust call to do_relax.
(Target::do_make_output_section): New method declaration.
(Target::do_relax): Add parameters for input objects, symbol table
and layout.
2009-10-10 01:18:19 +02:00
|
|
|
// Adjust a section index if necessary.
|
|
|
|
unsigned int
|
|
|
|
adjust_shndx(unsigned int shndx)
|
|
|
|
{
|
|
|
|
if (shndx >= elfcpp::SHN_LORESERVE)
|
|
|
|
shndx += this->elf_file_.large_shndx_offset();
|
|
|
|
return shndx;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Initialize input to output maps for section symbols in merged
|
|
|
|
// sections.
|
|
|
|
void
|
|
|
|
initialize_input_to_output_maps();
|
|
|
|
|
|
|
|
// Free the input to output maps for section symbols in merged
|
|
|
|
// sections.
|
|
|
|
void
|
|
|
|
free_input_to_output_maps();
|
|
|
|
|
|
|
|
// Return symbol table section index.
|
|
|
|
unsigned int
|
|
|
|
symtab_shndx() const
|
|
|
|
{ return this->symtab_shndx_; }
|
|
|
|
|
|
|
|
// Allow a child class to access the ELF file.
|
|
|
|
elfcpp::Elf_file<size, big_endian, Object>*
|
|
|
|
elf_file()
|
|
|
|
{ return &this->elf_file_; }
|
|
|
|
|
|
|
|
// Allow a child class to access the local values.
|
|
|
|
Local_values*
|
|
|
|
local_values()
|
|
|
|
{ return &this->local_values_; }
|
|
|
|
|
2009-10-25 17:57:32 +01:00
|
|
|
// Views and sizes when relocating.
|
|
|
|
struct View_size
|
|
|
|
{
|
|
|
|
unsigned char* view;
|
|
|
|
typename elfcpp::Elf_types<size>::Elf_Addr address;
|
|
|
|
off_t offset;
|
|
|
|
section_size_type view_size;
|
|
|
|
bool is_input_output_view;
|
|
|
|
bool is_postprocessing_view;
|
2011-06-25 02:40:57 +02:00
|
|
|
bool is_ctors_reverse_view;
|
2009-10-25 17:57:32 +01:00
|
|
|
};
|
|
|
|
|
|
|
|
typedef std::vector<View_size> Views;
|
|
|
|
|
2012-08-11 06:41:28 +02:00
|
|
|
// Stash away info for a number of special sections.
|
|
|
|
// Return true if any of the sections found require local symbols to be read.
|
|
|
|
virtual bool
|
|
|
|
do_find_special_sections(Read_symbols_data* sd);
|
|
|
|
|
2009-10-25 17:57:32 +01:00
|
|
|
// This may be overriden by a child class.
|
|
|
|
virtual void
|
* object.h (class Relobj): Drop options parameter from
gc_process_relocs, scan_relocs, relocate, do_gc_process_relocs,
do_scan_relocs, do_relocate. Change all callers.
(class Sized_relobj): Drop options parameters from
do_gc_process_relocs, do_scan_relocs, do_relocate,
do_relocate_sections, relocate_sections, emit_relocs_scan,
emit_relocs_scan_reltype. Change all callers.
(struct Relocate_info): Remove options field and all references to
it.
* reloc.h (class Read_relocs): Remove options constructor
parameter and options_ field. Change all callers.
(class Gc_process_relocs, class Scan_relocs): Likewise.
(class Relocate_task): Likewise.
* target-reloc.h (scan_relocs): Remove options parameter. Change
all callers.
(scan_relocatable_relocs): Likewise.
* target.h (class Sized_target): Remove options parameter from
gc_process_relocs, scan_relocs, scan_relocatable_relocs. Change
all callers.
* gc.h (gc_process_relocs): Remove options parameter. Change all
callers.
* arm.cc: Update functions to remove options parameters.
* i386.cc: Likewise.
* powerpc.cc: Likewise.
* sparc.cc: Likewise.
* x86_64.cc: Likewise.
* testsuite/testfile.cc: Likewise.
2009-10-29 06:16:23 +01:00
|
|
|
do_relocate_sections(const Symbol_table* symtab, const Layout* layout,
|
2010-08-13 00:01:11 +02:00
|
|
|
const unsigned char* pshdrs, Output_file* of,
|
|
|
|
Views* pviews);
|
2009-10-25 17:57:32 +01:00
|
|
|
|
2012-09-25 02:59:25 +02:00
|
|
|
// Adjust this local symbol value. Return false if the symbol
|
|
|
|
// should be discarded from the output file.
|
|
|
|
virtual bool
|
|
|
|
do_adjust_local_symbol(Symbol_value<size>*) const
|
|
|
|
{ return true; }
|
|
|
|
|
2010-01-29 19:23:18 +01:00
|
|
|
// Allow a child to set output local symbol count.
|
|
|
|
void
|
|
|
|
set_output_local_symbol_count(unsigned int value)
|
|
|
|
{ this->output_local_symbol_count_ = value; }
|
2010-07-12 19:59:58 +02:00
|
|
|
|
|
|
|
// Return TRUE if the section is a compressed debug section, and set
|
|
|
|
// *UNCOMPRESSED_SIZE to the size of the uncompressed data.
|
|
|
|
bool
|
|
|
|
do_section_is_compressed(unsigned int shndx,
|
|
|
|
section_size_type* uncompressed_size) const
|
|
|
|
{
|
|
|
|
if (this->compressed_sections_ == NULL)
|
|
|
|
return false;
|
|
|
|
Compressed_section_map::const_iterator p =
|
|
|
|
this->compressed_sections_->find(shndx);
|
|
|
|
if (p != this->compressed_sections_->end())
|
|
|
|
{
|
|
|
|
if (uncompressed_size != NULL)
|
2012-02-29 22:22:29 +01:00
|
|
|
*uncompressed_size = p->second.size;
|
2010-07-12 19:59:58 +02:00
|
|
|
return true;
|
|
|
|
}
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2012-02-29 22:22:29 +01:00
|
|
|
// Return a view of the uncompressed contents of a section. Set *PLEN
|
|
|
|
// to the size. Set *IS_NEW to true if the contents need to be deleted
|
|
|
|
// by the caller.
|
|
|
|
const unsigned char*
|
|
|
|
do_decompressed_section_contents(unsigned int shndx,
|
|
|
|
section_size_type* plen,
|
|
|
|
bool* is_new);
|
|
|
|
|
2012-03-21 20:02:22 +01:00
|
|
|
// Discard any buffers of decompressed sections. This is done
|
2012-02-29 22:22:29 +01:00
|
|
|
// at the end of the Add_symbols task.
|
|
|
|
void
|
|
|
|
do_discard_decompressed_sections();
|
|
|
|
|
2006-08-05 01:10:59 +02:00
|
|
|
private:
|
2006-09-22 00:13:18 +02:00
|
|
|
// For convenience.
|
2011-05-24 23:41:10 +02:00
|
|
|
typedef Sized_relobj_file<size, big_endian> This;
|
2006-09-22 00:13:18 +02:00
|
|
|
static const int ehdr_size = elfcpp::Elf_sizes<size>::ehdr_size;
|
|
|
|
static const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size;
|
|
|
|
static const int sym_size = elfcpp::Elf_sizes<size>::sym_size;
|
2006-09-28 00:53:42 +02:00
|
|
|
typedef elfcpp::Shdr<size, big_endian> Shdr;
|
|
|
|
|
2008-07-11 01:01:20 +02:00
|
|
|
// To keep track of discarded comdat sections, we need to map a member
|
|
|
|
// section index to the object and section index of the corresponding
|
|
|
|
// kept section.
|
|
|
|
struct Kept_comdat_section
|
|
|
|
{
|
2009-07-17 03:07:33 +02:00
|
|
|
Kept_comdat_section(Relobj* a_object, unsigned int a_shndx)
|
|
|
|
: object(a_object), shndx(a_shndx)
|
2008-07-11 01:01:20 +02:00
|
|
|
{ }
|
2009-07-17 03:07:33 +02:00
|
|
|
Relobj* object;
|
|
|
|
unsigned int shndx;
|
2008-07-11 01:01:20 +02:00
|
|
|
};
|
2009-07-17 03:07:33 +02:00
|
|
|
typedef std::map<unsigned int, Kept_comdat_section>
|
2008-07-11 01:01:20 +02:00
|
|
|
Kept_comdat_section_table;
|
|
|
|
|
2006-11-14 20:21:05 +01:00
|
|
|
// Find the SHT_SYMTAB section, given the section headers.
|
|
|
|
void
|
|
|
|
find_symtab(const unsigned char* pshdrs);
|
|
|
|
|
2007-11-09 08:00:15 +01:00
|
|
|
// Return whether SHDR has the right flags for a GNU style exception
|
|
|
|
// frame section.
|
|
|
|
bool
|
|
|
|
check_eh_frame_flags(const elfcpp::Shdr<size, big_endian>* shdr) const;
|
|
|
|
|
|
|
|
// Return whether there is a section named .eh_frame which might be
|
|
|
|
// a GNU style exception frame section.
|
|
|
|
bool
|
|
|
|
find_eh_frame(const unsigned char* pshdrs, const char* names,
|
2007-12-18 01:48:04 +01:00
|
|
|
section_size_type names_size) const;
|
2007-11-09 08:00:15 +01:00
|
|
|
|
2006-09-22 00:13:18 +02:00
|
|
|
// Whether to include a section group in the link.
|
|
|
|
bool
|
2008-02-06 09:13:50 +01:00
|
|
|
include_section_group(Symbol_table*, Layout*, unsigned int, const char*,
|
2010-08-25 10:36:54 +02:00
|
|
|
const unsigned char*, const char*, section_size_type,
|
2006-09-22 00:13:18 +02:00
|
|
|
std::vector<bool>*);
|
|
|
|
|
|
|
|
// Whether to include a linkonce section in the link.
|
|
|
|
bool
|
2008-05-01 03:23:21 +02:00
|
|
|
include_linkonce_section(Layout*, unsigned int, const char*,
|
2006-09-22 00:13:18 +02:00
|
|
|
const elfcpp::Shdr<size, big_endian>&);
|
|
|
|
|
2008-12-23 03:02:20 +01:00
|
|
|
// Layout an input section.
|
|
|
|
void
|
|
|
|
layout_section(Layout* layout, unsigned int shndx, const char* name,
|
2011-06-30 02:50:13 +02:00
|
|
|
const typename This::Shdr& shdr, unsigned int reloc_shndx,
|
2008-12-23 03:02:20 +01:00
|
|
|
unsigned int reloc_type);
|
|
|
|
|
2011-06-30 02:50:13 +02:00
|
|
|
// Layout an input .eh_frame section.
|
|
|
|
void
|
|
|
|
layout_eh_frame_section(Layout* layout, const unsigned char* symbols_data,
|
|
|
|
section_size_type symbols_size,
|
|
|
|
const unsigned char* symbol_names_data,
|
|
|
|
section_size_type symbol_names_size,
|
|
|
|
unsigned int shndx, const typename This::Shdr&,
|
|
|
|
unsigned int reloc_shndx, unsigned int reloc_type);
|
|
|
|
|
2006-09-29 21:58:17 +02:00
|
|
|
// Write section data to the output file. Record the views and
|
|
|
|
// sizes in VIEWS for use when relocating.
|
|
|
|
void
|
2011-06-25 02:40:57 +02:00
|
|
|
write_sections(const Layout*, const unsigned char* pshdrs, Output_file*,
|
|
|
|
Views*);
|
2006-09-29 21:58:17 +02:00
|
|
|
|
|
|
|
// Relocate the sections in the output file.
|
|
|
|
void
|
2009-12-14 20:53:05 +01:00
|
|
|
relocate_sections(const Symbol_table* symtab, const Layout* layout,
|
2010-08-13 00:01:11 +02:00
|
|
|
const unsigned char* pshdrs, Output_file* of,
|
|
|
|
Views* pviews)
|
|
|
|
{ this->do_relocate_sections(symtab, layout, pshdrs, of, pviews); }
|
2006-09-29 21:58:17 +02:00
|
|
|
|
2011-06-25 02:40:57 +02:00
|
|
|
// Reverse the words in a section. Used for .ctors sections mapped
|
|
|
|
// to .init_array sections.
|
|
|
|
void
|
|
|
|
reverse_words(unsigned char*, section_size_type);
|
|
|
|
|
2008-02-27 23:38:18 +01:00
|
|
|
// Scan the input relocations for --emit-relocs.
|
|
|
|
void
|
* object.h (class Relobj): Drop options parameter from
gc_process_relocs, scan_relocs, relocate, do_gc_process_relocs,
do_scan_relocs, do_relocate. Change all callers.
(class Sized_relobj): Drop options parameters from
do_gc_process_relocs, do_scan_relocs, do_relocate,
do_relocate_sections, relocate_sections, emit_relocs_scan,
emit_relocs_scan_reltype. Change all callers.
(struct Relocate_info): Remove options field and all references to
it.
* reloc.h (class Read_relocs): Remove options constructor
parameter and options_ field. Change all callers.
(class Gc_process_relocs, class Scan_relocs): Likewise.
(class Relocate_task): Likewise.
* target-reloc.h (scan_relocs): Remove options parameter. Change
all callers.
(scan_relocatable_relocs): Likewise.
* target.h (class Sized_target): Remove options parameter from
gc_process_relocs, scan_relocs, scan_relocatable_relocs. Change
all callers.
* gc.h (gc_process_relocs): Remove options parameter. Change all
callers.
* arm.cc: Update functions to remove options parameters.
* i386.cc: Likewise.
* powerpc.cc: Likewise.
* sparc.cc: Likewise.
* x86_64.cc: Likewise.
* testsuite/testfile.cc: Likewise.
2009-10-29 06:16:23 +01:00
|
|
|
emit_relocs_scan(Symbol_table*, Layout*, const unsigned char* plocal_syms,
|
2008-02-27 23:38:18 +01:00
|
|
|
const Read_relocs_data::Relocs_list::iterator&);
|
|
|
|
|
|
|
|
// Scan the input relocations for --emit-relocs, templatized on the
|
|
|
|
// type of the relocation section.
|
|
|
|
template<int sh_type>
|
|
|
|
void
|
* object.h (class Relobj): Drop options parameter from
gc_process_relocs, scan_relocs, relocate, do_gc_process_relocs,
do_scan_relocs, do_relocate. Change all callers.
(class Sized_relobj): Drop options parameters from
do_gc_process_relocs, do_scan_relocs, do_relocate,
do_relocate_sections, relocate_sections, emit_relocs_scan,
emit_relocs_scan_reltype. Change all callers.
(struct Relocate_info): Remove options field and all references to
it.
* reloc.h (class Read_relocs): Remove options constructor
parameter and options_ field. Change all callers.
(class Gc_process_relocs, class Scan_relocs): Likewise.
(class Relocate_task): Likewise.
* target-reloc.h (scan_relocs): Remove options parameter. Change
all callers.
(scan_relocatable_relocs): Likewise.
* target.h (class Sized_target): Remove options parameter from
gc_process_relocs, scan_relocs, scan_relocatable_relocs. Change
all callers.
* gc.h (gc_process_relocs): Remove options parameter. Change all
callers.
* arm.cc: Update functions to remove options parameters.
* i386.cc: Likewise.
* powerpc.cc: Likewise.
* sparc.cc: Likewise.
* x86_64.cc: Likewise.
* testsuite/testfile.cc: Likewise.
2009-10-29 06:16:23 +01:00
|
|
|
emit_relocs_scan_reltype(Symbol_table*, Layout*,
|
2008-02-27 23:38:18 +01:00
|
|
|
const unsigned char* plocal_syms,
|
|
|
|
const Read_relocs_data::Relocs_list::iterator&,
|
|
|
|
Relocatable_relocs*);
|
|
|
|
|
2010-08-13 00:01:11 +02:00
|
|
|
// Scan the input relocations for --incremental.
|
|
|
|
void
|
|
|
|
incremental_relocs_scan(const Read_relocs_data::Relocs_list::iterator&);
|
|
|
|
|
|
|
|
// Scan the input relocations for --incremental, templatized on the
|
|
|
|
// type of the relocation section.
|
|
|
|
template<int sh_type>
|
|
|
|
void
|
|
|
|
incremental_relocs_scan_reltype(
|
|
|
|
const Read_relocs_data::Relocs_list::iterator&);
|
|
|
|
|
|
|
|
void
|
|
|
|
incremental_relocs_write(const Relocate_info<size, big_endian>*,
|
|
|
|
unsigned int sh_type,
|
|
|
|
const unsigned char* prelocs,
|
|
|
|
size_t reloc_count,
|
|
|
|
Output_section*,
|
|
|
|
Address output_offset,
|
|
|
|
Output_file*);
|
|
|
|
|
|
|
|
template<int sh_type>
|
|
|
|
void
|
|
|
|
incremental_relocs_write_reltype(const Relocate_info<size, big_endian>*,
|
|
|
|
const unsigned char* prelocs,
|
|
|
|
size_t reloc_count,
|
|
|
|
Output_section*,
|
|
|
|
Address output_offset,
|
|
|
|
Output_file*);
|
|
|
|
|
2009-10-07 00:58:27 +02:00
|
|
|
// A type shared by split_stack_adjust_reltype and find_functions.
|
|
|
|
typedef std::map<section_offset_type, section_size_type> Function_offsets;
|
|
|
|
|
|
|
|
// Check for -fsplit-stack routines calling non-split-stack routines.
|
|
|
|
void
|
|
|
|
split_stack_adjust(const Symbol_table*, const unsigned char* pshdrs,
|
|
|
|
unsigned int sh_type, unsigned int shndx,
|
|
|
|
const unsigned char* prelocs, size_t reloc_count,
|
|
|
|
unsigned char* view, section_size_type view_size,
|
|
|
|
Reloc_symbol_changes** reloc_map);
|
|
|
|
|
|
|
|
template<int sh_type>
|
|
|
|
void
|
|
|
|
split_stack_adjust_reltype(const Symbol_table*, const unsigned char* pshdrs,
|
|
|
|
unsigned int shndx, const unsigned char* prelocs,
|
|
|
|
size_t reloc_count, unsigned char* view,
|
|
|
|
section_size_type view_size,
|
|
|
|
Reloc_symbol_changes** reloc_map);
|
|
|
|
|
|
|
|
// Find all functions in a section.
|
|
|
|
void
|
|
|
|
find_functions(const unsigned char* pshdrs, unsigned int shndx,
|
|
|
|
Function_offsets*);
|
|
|
|
|
2006-09-29 21:58:17 +02:00
|
|
|
// Write out the local symbols.
|
|
|
|
void
|
2007-05-16 19:42:48 +02:00
|
|
|
write_local_symbols(Output_file*,
|
2007-12-06 06:55:50 +01:00
|
|
|
const Stringpool_template<char>*,
|
2008-04-19 20:30:58 +02:00
|
|
|
const Stringpool_template<char>*,
|
|
|
|
Output_symtab_xindex*,
|
2011-04-12 02:44:48 +02:00
|
|
|
Output_symtab_xindex*,
|
|
|
|
off_t);
|
2006-09-29 21:58:17 +02:00
|
|
|
|
2008-07-11 01:01:20 +02:00
|
|
|
// Record a mapping from discarded section SHNDX to the corresponding
|
|
|
|
// kept section.
|
|
|
|
void
|
2009-07-17 03:07:33 +02:00
|
|
|
set_kept_comdat_section(unsigned int shndx, Relobj* kept_object,
|
|
|
|
unsigned int kept_shndx)
|
2008-07-11 01:01:20 +02:00
|
|
|
{
|
2009-07-17 03:07:33 +02:00
|
|
|
Kept_comdat_section kept(kept_object, kept_shndx);
|
|
|
|
this->kept_comdat_sections_.insert(std::make_pair(shndx, kept));
|
2008-07-11 01:01:20 +02:00
|
|
|
}
|
|
|
|
|
2009-07-17 03:07:33 +02:00
|
|
|
// Find the kept section corresponding to the discarded section
|
|
|
|
// SHNDX. Return true if found.
|
|
|
|
bool
|
|
|
|
get_kept_comdat_section(unsigned int shndx, Relobj** kept_object,
|
|
|
|
unsigned int* kept_shndx) const
|
2008-07-11 01:01:20 +02:00
|
|
|
{
|
|
|
|
typename Kept_comdat_section_table::const_iterator p =
|
|
|
|
this->kept_comdat_sections_.find(shndx);
|
|
|
|
if (p == this->kept_comdat_sections_.end())
|
2009-07-17 03:07:33 +02:00
|
|
|
return false;
|
|
|
|
*kept_object = p->second.object;
|
|
|
|
*kept_shndx = p->second.shndx;
|
|
|
|
return true;
|
2008-07-11 01:01:20 +02:00
|
|
|
}
|
|
|
|
|
2010-09-09 01:54:51 +02:00
|
|
|
// Compute final local symbol value. R_SYM is the local symbol index.
|
|
|
|
// LV_IN points to a local symbol value containing the input value.
|
|
|
|
// LV_OUT points to a local symbol value storing the final output value,
|
|
|
|
// which must not be a merged symbol value since before calling this
|
|
|
|
// method to avoid memory leak. RELOCATABLE indicates whether we are
|
|
|
|
// linking a relocatable output. OUT_SECTIONS is an array of output
|
|
|
|
// sections. OUT_OFFSETS is an array of offsets of the sections. SYMTAB
|
|
|
|
// points to a symbol table.
|
|
|
|
//
|
|
|
|
// The method returns a status code at return. If the return status is
|
|
|
|
// CFLV_OK, *LV_OUT contains the final value. If the return status is
|
|
|
|
// CFLV_ERROR, *LV_OUT is 0. If the return status is CFLV_DISCARDED,
|
|
|
|
// *LV_OUT is not modified.
|
|
|
|
inline Compute_final_local_value_status
|
|
|
|
compute_final_local_value_internal(unsigned int r_sym,
|
|
|
|
const Symbol_value<size>* lv_in,
|
|
|
|
Symbol_value<size>* lv_out,
|
|
|
|
bool relocatable,
|
|
|
|
const Output_sections& out_sections,
|
|
|
|
const std::vector<Address>& out_offsets,
|
|
|
|
const Symbol_table* symtab);
|
|
|
|
|
2010-08-20 00:50:16 +02:00
|
|
|
// The PLT offsets of local symbols.
|
|
|
|
typedef Unordered_map<unsigned int, unsigned int> Local_plt_offsets;
|
2007-11-14 23:31:02 +01:00
|
|
|
|
2008-12-23 03:02:20 +01:00
|
|
|
// Saved information for sections whose layout was deferred.
|
|
|
|
struct Deferred_layout
|
|
|
|
{
|
|
|
|
static const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size;
|
|
|
|
Deferred_layout(unsigned int shndx, const char* name,
|
|
|
|
const unsigned char* pshdr,
|
|
|
|
unsigned int reloc_shndx, unsigned int reloc_type)
|
|
|
|
: shndx_(shndx), name_(name), reloc_shndx_(reloc_shndx),
|
|
|
|
reloc_type_(reloc_type)
|
|
|
|
{
|
|
|
|
memcpy(this->shdr_data_, pshdr, shdr_size);
|
|
|
|
}
|
|
|
|
unsigned int shndx_;
|
|
|
|
std::string name_;
|
|
|
|
unsigned int reloc_shndx_;
|
|
|
|
unsigned int reloc_type_;
|
|
|
|
unsigned char shdr_data_[shdr_size];
|
|
|
|
};
|
|
|
|
|
2006-11-07 19:51:39 +01:00
|
|
|
// General access to the ELF file.
|
|
|
|
elfcpp::Elf_file<size, big_endian, Object> elf_file_;
|
2011-08-01 20:25:22 +02:00
|
|
|
// Type of ELF file (ET_REL or ET_EXEC). ET_EXEC files are allowed
|
|
|
|
// as input files only for the --just-symbols option.
|
|
|
|
int e_type_;
|
2006-08-05 01:10:59 +02:00
|
|
|
// Index of SHT_SYMTAB section.
|
2006-11-07 19:51:39 +01:00
|
|
|
unsigned int symtab_shndx_;
|
2006-09-29 21:58:17 +02:00
|
|
|
// The number of local symbols.
|
|
|
|
unsigned int local_symbol_count_;
|
|
|
|
// The number of local symbols which go into the output file.
|
|
|
|
unsigned int output_local_symbol_count_;
|
2007-12-06 06:55:50 +01:00
|
|
|
// The number of local symbols which go into the output file's dynamic
|
|
|
|
// symbol table.
|
|
|
|
unsigned int output_local_dynsym_count_;
|
2006-08-19 00:29:20 +02:00
|
|
|
// The entries in the symbol table for the external symbols.
|
2007-11-09 08:00:15 +01:00
|
|
|
Symbols symbols_;
|
2008-07-23 00:08:43 +02:00
|
|
|
// Number of symbols defined in object file itself.
|
|
|
|
size_t defined_count_;
|
2011-04-12 02:44:48 +02:00
|
|
|
// File offset for local symbols (relative to start of symbol table).
|
2006-09-28 00:53:42 +02:00
|
|
|
off_t local_symbol_offset_;
|
2011-04-12 02:44:48 +02:00
|
|
|
// File offset for local dynamic symbols (absolute).
|
2007-12-06 06:55:50 +01:00
|
|
|
off_t local_dynsym_offset_;
|
2006-09-29 21:58:17 +02:00
|
|
|
// Values of local symbols.
|
2006-11-16 01:38:25 +01:00
|
|
|
Local_values local_values_;
|
2010-08-20 00:50:16 +02:00
|
|
|
// PLT offsets for local symbols.
|
|
|
|
Local_plt_offsets local_plt_offsets_;
|
2008-07-11 01:01:20 +02:00
|
|
|
// Table mapping discarded comdat sections to corresponding kept sections.
|
|
|
|
Kept_comdat_section_table kept_comdat_sections_;
|
2007-11-09 08:00:15 +01:00
|
|
|
// Whether this object has a GNU style .eh_frame section.
|
|
|
|
bool has_eh_frame_;
|
2009-06-05 20:16:31 +02:00
|
|
|
// If this object has a GNU style .eh_frame section that is discarded in
|
|
|
|
// output, record the index here. Otherwise it is -1U.
|
|
|
|
unsigned int discarded_eh_frame_shndx_;
|
2008-12-23 03:02:20 +01:00
|
|
|
// The list of sections whose layout was deferred.
|
|
|
|
std::vector<Deferred_layout> deferred_layout_;
|
2010-06-10 19:20:27 +02:00
|
|
|
// The list of relocation sections whose layout was deferred.
|
|
|
|
std::vector<Deferred_layout> deferred_layout_relocs_;
|
2012-02-29 22:22:29 +01:00
|
|
|
// For compressed debug sections, map section index to uncompressed size
|
|
|
|
// and contents.
|
2010-07-12 19:59:58 +02:00
|
|
|
Compressed_section_map* compressed_sections_;
|
2006-08-05 01:10:59 +02:00
|
|
|
};
|
|
|
|
|
2006-09-26 23:00:34 +02:00
|
|
|
// A class to manage the list of all objects.
|
2006-09-22 00:13:18 +02:00
|
|
|
|
2006-09-26 23:00:34 +02:00
|
|
|
class Input_objects
|
|
|
|
{
|
|
|
|
public:
|
|
|
|
Input_objects()
|
2009-02-28 05:39:57 +01:00
|
|
|
: relobj_list_(), dynobj_list_(), sonames_(), cref_(NULL)
|
2006-09-26 23:00:34 +02:00
|
|
|
{ }
|
|
|
|
|
2006-11-06 23:46:08 +01:00
|
|
|
// The type of the list of input relocateable objects.
|
|
|
|
typedef std::vector<Relobj*> Relobj_list;
|
|
|
|
typedef Relobj_list::const_iterator Relobj_iterator;
|
|
|
|
|
|
|
|
// The type of the list of input dynamic objects.
|
|
|
|
typedef std::vector<Dynobj*> Dynobj_list;
|
|
|
|
typedef Dynobj_list::const_iterator Dynobj_iterator;
|
2006-09-26 23:00:34 +02:00
|
|
|
|
2006-12-06 07:28:56 +01:00
|
|
|
// Add an object to the list. Return true if all is well, or false
|
|
|
|
// if this object should be ignored.
|
|
|
|
bool
|
2006-09-26 23:00:34 +02:00
|
|
|
add_object(Object*);
|
|
|
|
|
2008-07-23 00:08:43 +02:00
|
|
|
// Start processing an archive.
|
|
|
|
void
|
|
|
|
archive_start(Archive*);
|
|
|
|
|
|
|
|
// Stop processing an archive.
|
|
|
|
void
|
|
|
|
archive_stop(Archive*);
|
|
|
|
|
2007-11-14 08:34:53 +01:00
|
|
|
// For each dynamic object, check whether we've seen all of its
|
|
|
|
// explicit dependencies.
|
|
|
|
void
|
|
|
|
check_dynamic_dependencies() const;
|
|
|
|
|
2007-11-14 17:53:25 +01:00
|
|
|
// Return whether an object was found in the system library
|
|
|
|
// directory.
|
|
|
|
bool
|
|
|
|
found_in_system_library_directory(const Object*) const;
|
|
|
|
|
2008-07-23 00:08:43 +02:00
|
|
|
// Print symbol counts.
|
|
|
|
void
|
|
|
|
print_symbol_counts(const Symbol_table*) const;
|
|
|
|
|
2010-01-05 22:52:51 +01:00
|
|
|
// Print a cross reference table.
|
|
|
|
void
|
|
|
|
print_cref(const Symbol_table*, FILE*) const;
|
|
|
|
|
2006-11-06 23:46:08 +01:00
|
|
|
// Iterate over all regular objects.
|
|
|
|
|
|
|
|
Relobj_iterator
|
|
|
|
relobj_begin() const
|
|
|
|
{ return this->relobj_list_.begin(); }
|
|
|
|
|
|
|
|
Relobj_iterator
|
|
|
|
relobj_end() const
|
|
|
|
{ return this->relobj_list_.end(); }
|
|
|
|
|
|
|
|
// Iterate over all dynamic objects.
|
|
|
|
|
|
|
|
Dynobj_iterator
|
|
|
|
dynobj_begin() const
|
|
|
|
{ return this->dynobj_list_.begin(); }
|
2006-09-26 23:00:34 +02:00
|
|
|
|
2006-11-06 23:46:08 +01:00
|
|
|
Dynobj_iterator
|
|
|
|
dynobj_end() const
|
|
|
|
{ return this->dynobj_list_.end(); }
|
2006-09-26 23:00:34 +02:00
|
|
|
|
|
|
|
// Return whether we have seen any dynamic objects.
|
|
|
|
bool
|
|
|
|
any_dynamic() const
|
2006-11-06 23:46:08 +01:00
|
|
|
{ return !this->dynobj_list_.empty(); }
|
2006-09-26 23:00:34 +02:00
|
|
|
|
2010-02-11 08:42:17 +01:00
|
|
|
// Return the number of non dynamic objects.
|
|
|
|
int
|
|
|
|
number_of_relobjs() const
|
|
|
|
{ return this->relobj_list_.size(); }
|
|
|
|
|
2007-10-17 08:24:50 +02:00
|
|
|
// Return the number of input objects.
|
|
|
|
int
|
|
|
|
number_of_input_objects() const
|
|
|
|
{ return this->relobj_list_.size() + this->dynobj_list_.size(); }
|
|
|
|
|
2006-09-26 23:00:34 +02:00
|
|
|
private:
|
|
|
|
Input_objects(const Input_objects&);
|
|
|
|
Input_objects& operator=(const Input_objects&);
|
|
|
|
|
2006-12-06 07:28:56 +01:00
|
|
|
// The list of ordinary objects included in the link.
|
2006-11-06 23:46:08 +01:00
|
|
|
Relobj_list relobj_list_;
|
2006-12-06 07:28:56 +01:00
|
|
|
// The list of dynamic objects included in the link.
|
2006-11-06 23:46:08 +01:00
|
|
|
Dynobj_list dynobj_list_;
|
2006-12-06 07:28:56 +01:00
|
|
|
// SONAMEs that we have seen.
|
|
|
|
Unordered_set<std::string> sonames_;
|
2008-07-23 00:08:43 +02:00
|
|
|
// Manage cross-references if requested.
|
|
|
|
Cref* cref_;
|
2006-09-26 23:00:34 +02:00
|
|
|
};
|
2006-09-22 00:13:18 +02:00
|
|
|
|
2006-10-20 22:40:49 +02:00
|
|
|
// Some of the information we pass to the relocation routines. We
|
|
|
|
// group this together to avoid passing a dozen different arguments.
|
|
|
|
|
|
|
|
template<int size, bool big_endian>
|
|
|
|
struct Relocate_info
|
|
|
|
{
|
|
|
|
// Symbol table.
|
|
|
|
const Symbol_table* symtab;
|
|
|
|
// Layout.
|
|
|
|
const Layout* layout;
|
|
|
|
// Object being relocated.
|
2011-05-24 23:41:10 +02:00
|
|
|
Sized_relobj_file<size, big_endian>* object;
|
2006-10-20 22:40:49 +02:00
|
|
|
// Section index of relocation section.
|
|
|
|
unsigned int reloc_shndx;
|
2009-10-15 02:33:18 +02:00
|
|
|
// Section header of relocation section.
|
|
|
|
const unsigned char* reloc_shdr;
|
2006-10-20 22:40:49 +02:00
|
|
|
// Section index of section being relocated.
|
|
|
|
unsigned int data_shndx;
|
2009-10-15 02:33:18 +02:00
|
|
|
// Section header of data section.
|
|
|
|
const unsigned char* data_shdr;
|
2006-10-20 22:40:49 +02:00
|
|
|
|
|
|
|
// Return a string showing the location of a relocation. This is
|
|
|
|
// only used for error messages.
|
|
|
|
std::string
|
|
|
|
location(size_t relnum, off_t reloffset) const;
|
|
|
|
};
|
|
|
|
|
2010-01-20 18:29:52 +01:00
|
|
|
// This is used to represent a section in an object and is used as the
|
|
|
|
// key type for various section maps.
|
|
|
|
typedef std::pair<Object*, unsigned int> Section_id;
|
|
|
|
|
|
|
|
// This is similar to Section_id but is used when the section
|
|
|
|
// pointers are const.
|
|
|
|
typedef std::pair<const Object*, unsigned int> Const_section_id;
|
|
|
|
|
|
|
|
// The hash value is based on the address of an object in memory during
|
|
|
|
// linking. It is okay to use this for looking up sections but never use
|
|
|
|
// this in an unordered container that we want to traverse in a repeatable
|
|
|
|
// manner.
|
|
|
|
|
|
|
|
struct Section_id_hash
|
|
|
|
{
|
|
|
|
size_t operator()(const Section_id& loc) const
|
|
|
|
{ return reinterpret_cast<uintptr_t>(loc.first) ^ loc.second; }
|
|
|
|
};
|
|
|
|
|
|
|
|
struct Const_section_id_hash
|
|
|
|
{
|
|
|
|
size_t operator()(const Const_section_id& loc) const
|
|
|
|
{ return reinterpret_cast<uintptr_t>(loc.first) ^ loc.second; }
|
|
|
|
};
|
|
|
|
|
2009-03-24 19:42:10 +01:00
|
|
|
// Return whether INPUT_FILE contains an ELF object start at file
|
|
|
|
// offset OFFSET. This sets *START to point to a view of the start of
|
|
|
|
// the file. It sets *READ_SIZE to the number of bytes in the view.
|
|
|
|
|
|
|
|
extern bool
|
|
|
|
is_elf_object(Input_file* input_file, off_t offset,
|
2010-08-25 10:36:54 +02:00
|
|
|
const unsigned char** start, int* read_size);
|
2009-03-24 19:42:10 +01:00
|
|
|
|
2006-08-05 01:10:59 +02:00
|
|
|
// Return an Object appropriate for the input file. P is BYTES long,
|
* readsyms.cc (Read_symbols::incompatible_warning): New function.
(Read_symbols::requeue): New function.
(Read_symbols::do_read_symbols): If make_elf_object fails because
the target type is not configured, and the file was searched for,
issue a warning and retry with the next directory.
(Add_symbols::run): If the file has an incompatible format, and
it was searched for, requeue the Read_symbols task. On error,
release the object.
* readsyms.h (class Read_symbols): Add dirindex_ field. Add
dirindex parameter to constructor. Change all callers. Declare
incompatible_warning and requeue.
(class Add_symbols): Add dirpath_, dirindex_, mapfile_,
input_argument_ and input_group_ fields. Add them to
constructor. Change all callers.
(class Read_script): Add dirindex_ field. Add it to constructor.
Change all callers.
* archive.cc (Archive::setup): Remove input_objects parameter.
Change all callers.
(Archive::get_file_and_offset): Likewise.
(Archive::read_all_symbols): Likewise.
(Archive::read_symbols): Likewise.
(Archive::get_elf_object_for_member): Remove input_objects
parameter. Add punconfigured parameter. Change all callers.
(Archive::add_symbols): Change return type to bool. Check return
value of include_member.
(Archive::include_all_members): Likewise.
(Archive::include_member): Change return type to bool. Return
false if first included object has incompatible target. Set
included_member_ field.
(Add_archive_symbols::run): If add_symbols returns false, requeue
Read_symbols task.
* archive.h (class Archive): Add included_member_ field.
Initialize it in constructor. Add input_file and searched_for
methods. Update declarations.
(class Add_archive_symbols): Add dirpath_, dirindex_, and
input_argument_ fields. Add them to constructor. Change all
callers.
* script.cc: Include "target-select.h".
(class Parser_closure): Add skip_on_incompatible_target_ and
found_incompatible_target_ fields. Add
skip_on_incompatible_target parameter to constructor. Change all
callers. Add methods skip_on_incompatible_target,
clear_skip_on_incompatible_target, found_incompatible_target, and
set_found_incompatible_target.
(read_input_script): Add dirindex parameter. Change all callers.
If parser finds an incompatible target, requeue Read_symbols
task.
(script_set_symbol): Clear skip_on_incompatible_target in
closure.
(script_add_assertion, script_parse_option): Likewise.
(script_start_sections, script_add_phdr): Likewise.
(script_check_output_format): New function.
* script.h (read_input_script): Update declaration.
* script-c.h (script_check_output_format): Declare.
* yyscript.y (file_cmd): Handle OUTPUT_FORMAT.
(ignore_cmd): Remove OUTPUT_FORMAT.
* fileread.cc (Input_file::Input_file): Add explicit this.
(Input_file::will_search_for): New function.
(Input_file::open): Add pindex parameter. Change all callers.
* fileread.h (class Input_file): Add input_file_argument method.
Declare will_search_for. Update declarations.
* object.cc (make_elf_object): Add punconfigured parameter.
Change all callers.
* object.h (class Object): Make input_file public. Add
searched_for method.
(make_elf_object): Update declaration.
* dirsearch.cc (Dirsearch::find): Add pindex parameter. Use it to
restart search.
* dirsearch.h (class Dirsearch): Update declaration.
* options.h (class General_options): Add --warn-search-mismatch.
* parameters.cc (Parameters::is_compatible_target): New function.
* parameters.h (class Parameters): Declare is_compatible_target.
* workqueue.cc (Workqueue::add_blocker): New function.
* workqueue.h (class Workqueue): Declare add_blocker.
2009-03-14 06:56:46 +01:00
|
|
|
// and holds the ELF header. If PUNCONFIGURED is not NULL, then if
|
|
|
|
// this sees an object the linker is not configured to support, it
|
|
|
|
// sets *PUNCONFIGURED to true and returns NULL without giving an
|
|
|
|
// error message.
|
2006-08-05 01:10:59 +02:00
|
|
|
|
2006-09-29 21:58:17 +02:00
|
|
|
extern Object*
|
|
|
|
make_elf_object(const std::string& name, Input_file*,
|
|
|
|
off_t offset, const unsigned char* p,
|
* readsyms.cc (Read_symbols::incompatible_warning): New function.
(Read_symbols::requeue): New function.
(Read_symbols::do_read_symbols): If make_elf_object fails because
the target type is not configured, and the file was searched for,
issue a warning and retry with the next directory.
(Add_symbols::run): If the file has an incompatible format, and
it was searched for, requeue the Read_symbols task. On error,
release the object.
* readsyms.h (class Read_symbols): Add dirindex_ field. Add
dirindex parameter to constructor. Change all callers. Declare
incompatible_warning and requeue.
(class Add_symbols): Add dirpath_, dirindex_, mapfile_,
input_argument_ and input_group_ fields. Add them to
constructor. Change all callers.
(class Read_script): Add dirindex_ field. Add it to constructor.
Change all callers.
* archive.cc (Archive::setup): Remove input_objects parameter.
Change all callers.
(Archive::get_file_and_offset): Likewise.
(Archive::read_all_symbols): Likewise.
(Archive::read_symbols): Likewise.
(Archive::get_elf_object_for_member): Remove input_objects
parameter. Add punconfigured parameter. Change all callers.
(Archive::add_symbols): Change return type to bool. Check return
value of include_member.
(Archive::include_all_members): Likewise.
(Archive::include_member): Change return type to bool. Return
false if first included object has incompatible target. Set
included_member_ field.
(Add_archive_symbols::run): If add_symbols returns false, requeue
Read_symbols task.
* archive.h (class Archive): Add included_member_ field.
Initialize it in constructor. Add input_file and searched_for
methods. Update declarations.
(class Add_archive_symbols): Add dirpath_, dirindex_, and
input_argument_ fields. Add them to constructor. Change all
callers.
* script.cc: Include "target-select.h".
(class Parser_closure): Add skip_on_incompatible_target_ and
found_incompatible_target_ fields. Add
skip_on_incompatible_target parameter to constructor. Change all
callers. Add methods skip_on_incompatible_target,
clear_skip_on_incompatible_target, found_incompatible_target, and
set_found_incompatible_target.
(read_input_script): Add dirindex parameter. Change all callers.
If parser finds an incompatible target, requeue Read_symbols
task.
(script_set_symbol): Clear skip_on_incompatible_target in
closure.
(script_add_assertion, script_parse_option): Likewise.
(script_start_sections, script_add_phdr): Likewise.
(script_check_output_format): New function.
* script.h (read_input_script): Update declaration.
* script-c.h (script_check_output_format): Declare.
* yyscript.y (file_cmd): Handle OUTPUT_FORMAT.
(ignore_cmd): Remove OUTPUT_FORMAT.
* fileread.cc (Input_file::Input_file): Add explicit this.
(Input_file::will_search_for): New function.
(Input_file::open): Add pindex parameter. Change all callers.
* fileread.h (class Input_file): Add input_file_argument method.
Declare will_search_for. Update declarations.
* object.cc (make_elf_object): Add punconfigured parameter.
Change all callers.
* object.h (class Object): Make input_file public. Add
searched_for method.
(make_elf_object): Update declaration.
* dirsearch.cc (Dirsearch::find): Add pindex parameter. Use it to
restart search.
* dirsearch.h (class Dirsearch): Update declaration.
* options.h (class General_options): Add --warn-search-mismatch.
* parameters.cc (Parameters::is_compatible_target): New function.
* parameters.h (class Parameters): Declare is_compatible_target.
* workqueue.cc (Workqueue::add_blocker): New function.
* workqueue.h (class Workqueue): Declare add_blocker.
2009-03-14 06:56:46 +01:00
|
|
|
section_offset_type bytes, bool* punconfigured);
|
2006-08-05 01:10:59 +02:00
|
|
|
|
|
|
|
} // end namespace gold
|
|
|
|
|
|
|
|
#endif // !defined(GOLD_OBJECT_H)
|