// layout.h -- lay out output file sections for gold -*- C++ -*-
+// Copyright 2006, 2007 Free Software Foundation, Inc.
+// Written by Ian Lance Taylor <iant@google.com>.
+
+// This file is part of gold.
+
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+// MA 02110-1301, USA.
+
#ifndef GOLD_LAYOUT_H
#define GOLD_LAYOUT_H
#include "workqueue.h"
#include "object.h"
+#include "dynobj.h"
#include "stringpool.h"
namespace gold
layout(Relobj *object, unsigned int shndx, const char* name,
const elfcpp::Shdr<size, big_endian>& shdr, off_t* offset);
+ // Handle a GNU stack note. This is called once per input object
+ // file. SEEN_GNU_STACK is true if the object file has a
+ // .note.GNU-stack section. GNU_STACK_FLAGS is the section flags
+ // from that section if there was one.
+ void
+ layout_gnu_stack(bool seen_gnu_stack, uint64_t gnu_stack_flags);
+
// Add an Output_section_data to the layout. This is used for
// special sections like the GOT section.
void
void
create_initial_dynamic_sections(const Input_objects*, Symbol_table*);
+ // Define __start and __stop symbols for output sections.
+ void
+ define_section_symbols(Symbol_table*, const Target*);
+
// Return the Stringpool used for symbol names.
const Stringpool*
sympool() const
{ return &this->sympool_; }
+ // Return the Stringpool used for dynamic symbol names and dynamic
+ // tags.
+ const Stringpool*
+ dynpool() const
+ { return &this->dynpool_; }
+
// Return whether a section is a .gnu.linkonce section, given the
// section name.
static inline bool
off_t
finalize(const Input_objects*, Symbol_table*);
- // Return the TLS segment.
+ // Return the size of the output file.
+ off_t
+ output_file_size() const
+ { return this->output_file_size_; }
+
+ // Return the TLS segment. This will return NULL if there isn't
+ // one.
Output_segment*
tls_segment() const
{ return this->tls_segment_; }
+ // Return the normal symbol table.
+ Output_section*
+ symtab_section() const
+ {
+ gold_assert(this->symtab_section_ != NULL);
+ return this->symtab_section_;
+ }
+
+ // Return the dynamic symbol table.
+ Output_section*
+ dynsym_section() const
+ {
+ gold_assert(this->dynsym_section_ != NULL);
+ return this->dynsym_section_;
+ }
+
+ // Return the dynamic tags.
+ Output_data_dynamic*
+ dynamic_data() const
+ { return this->dynamic_data_; }
+
// Write out data not associated with an input file or the symbol
// table.
void
- write_data(const Symbol_table*, const Target*, Output_file*) const;
+ write_data(const Symbol_table*, Output_file*) const;
// Return an output section named NAME, or NULL if there is none.
Output_section*
static const Linkonce_mapping linkonce_mapping[];
static const int linkonce_mapping_count;
+ // Handle an exception frame section.
+ template<int size, bool big_endian>
+ void
+ layout_eh_frame(Relobj*, unsigned int, const char*,
+ const elfcpp::Shdr<size, big_endian>&,
+ Output_section*, off_t*);
+
+ // Create a .note section for gold.
+ void
+ create_gold_note();
+
+ // Record whether the stack must be executable.
+ void
+ create_executable_stack_info(const Target*);
+
// Find the first read-only PT_LOAD segment, creating one if
// necessary.
Output_segment*
// Create the output sections for the symbol table.
void
- create_symtab_sections(int size, const Input_objects*, Symbol_table*, off_t*,
- Output_section** ostrtab);
+ create_symtab_sections(const Input_objects*, Symbol_table*, off_t*);
// Create the .shstrtab section.
Output_section*
// Create the section header table.
Output_section_headers*
- create_shdrs(int size, bool big_endian, off_t*);
+ create_shdrs(off_t*);
// Create the dynamic symbol table.
void
- create_dynamic_symtab(const Target*, Output_data_dynamic*, Symbol_table*);
+ create_dynamic_symtab(const Target*, Symbol_table*, Output_section** pdynstr,
+ unsigned int* plocal_dynamic_count,
+ std::vector<Symbol*>* pdynamic_symbols,
+ Versions* versions);
// Finish the .dynamic section and PT_DYNAMIC segment.
void
- finish_dynamic_section(const Input_objects*, const Symbol_table*,
- Output_data_dynamic*);
+ finish_dynamic_section(const Input_objects*, const Symbol_table*);
// Create the .interp section and PT_INTERP segment.
void
create_interp(const Target* target);
+ // Create the version sections.
+ void
+ create_version_sections(const Versions*,
+ const Symbol_table*,
+ unsigned int local_symcount,
+ const std::vector<Symbol*>& dynamic_symbols,
+ const Output_section* dynstr);
+
+ template<int size, bool big_endian>
+ void
+ sized_create_version_sections(const Versions* versions,
+ const Symbol_table*,
+ unsigned int local_symcount,
+ const std::vector<Symbol*>& dynamic_symbols,
+ const Output_section* dynstr
+ ACCEPT_SIZE_ENDIAN);
+
// Return whether to include this section in the link.
template<int size, bool big_endian>
bool
off_t
set_segment_offsets(const Target*, Output_segment*, unsigned int* pshndx);
- // Set the final file offsets and section indices of all the
+ // Set the final file offsets and section indexes of all the
// sections not associated with a segment.
off_t
set_section_offsets(off_t, unsigned int *pshndx);
Output_section* dynsym_section_;
// The SHT_DYNAMIC output section if there is one.
Output_section* dynamic_section_;
+ // The dynamic data which goes into dynamic_section_.
+ Output_data_dynamic* dynamic_data_;
+ // The exception frame section.
+ Output_section* eh_frame_section_;
+ // The size of the output file.
+ off_t output_file_size_;
+ // Whether we have seen an object file marked to require an
+ // executable stack.
+ bool input_requires_executable_stack_;
+ // Whether we have seen at least one object file with an executable
+ // stack marker.
+ bool input_with_gnu_stack_note_;
+ // Whether we have seen at least one object file without an
+ // executable stack marker.
+ bool input_without_gnu_stack_note_;
};
// This task handles writing out data which is not part of a section
{
public:
Write_data_task(const Layout* layout, const Symbol_table* symtab,
- const Target* target, Output_file* of,
- Task_token* final_blocker)
- : layout_(layout), symtab_(symtab), target_(target), of_(of),
- final_blocker_(final_blocker)
+ Output_file* of, Task_token* final_blocker)
+ : layout_(layout), symtab_(symtab), of_(of), final_blocker_(final_blocker)
{ }
// The standard Task methods.
private:
const Layout* layout_;
const Symbol_table* symtab_;
- const Target* target_;
Output_file* of_;
Task_token* final_blocker_;
};
{
public:
Write_symbols_task(const Symbol_table* symtab, const Target* target,
- const Stringpool* sympool, Output_file* of,
- Task_token* final_blocker)
- : symtab_(symtab), target_(target), sympool_(sympool), of_(of),
- final_blocker_(final_blocker)
+ const Stringpool* sympool, const Stringpool* dynpool,
+ Output_file* of, Task_token* final_blocker)
+ : symtab_(symtab), target_(target), sympool_(sympool), dynpool_(dynpool),
+ of_(of), final_blocker_(final_blocker)
{ }
// The standard Task methods.
const Symbol_table* symtab_;
const Target* target_;
const Stringpool* sympool_;
+ const Stringpool* dynpool_;
Output_file* of_;
Task_token* final_blocker_;
};
projects / deliverable / binutils-gdb.git / blobdiff