#ifndef GOLD_LAYOUT_H
#define GOLD_LAYOUT_H
+#include <cstring>
#include <list>
#include <string>
#include <utility>
class Output_segment;
class Output_data;
class Output_data_dynamic;
+class Output_symtab_xindex;
class Eh_frame;
class Target;
dynpool() const
{ return &this->dynpool_; }
+ // Return the symtab_xindex section used to hold large section
+ // indexes for the normal symbol table.
+ Output_symtab_xindex*
+ symtab_xindex() const
+ { return this->symtab_xindex_; }
+
+ // Return the dynsym_xindex section used to hold large section
+ // indexes for the dynamic symbol table.
+ Output_symtab_xindex*
+ dynsym_xindex() const
+ { return this->dynsym_xindex_; }
+
// Return whether a section is a .gnu.linkonce section, given the
// section name.
static inline bool
is_linkonce(const char* name)
{ return strncmp(name, ".gnu.linkonce", sizeof(".gnu.linkonce") - 1) == 0; }
+ // Return true if a section is a debugging section.
+ static inline bool
+ is_debug_info_section(const char* name)
+ {
+ // Debugging sections can only be recognized by name.
+ return (strncmp(name, ".debug", sizeof(".debug") - 1) == 0
+ || strncmp(name, ".gnu.linkonce.wi.",
+ sizeof(".gnu.linkonce.wi.") - 1) == 0
+ || strncmp(name, ".line", sizeof(".line") - 1) == 0
+ || strncmp(name, ".stab", sizeof(".stab") - 1) == 0);
+ }
+
// Record the signature of a comdat section, and return whether to
// include it in the link. The GROUP parameter is true for a
// section group signature, false for a signature derived from a
// .gnu.linkonce section.
bool
- add_comdat(const char*, bool group);
+ add_comdat(Relobj*, unsigned int, const std::string&, bool group);
+
+ // Find the given comdat signature, and return the object and section
+ // index of the kept group.
+ Relobj*
+ find_kept_object(const std::string&, unsigned int*) const;
// Finalize the layout after all the input sections have been added.
off_t
static elfcpp::Elf_Word
section_flags_to_segment(elfcpp::Elf_Xword flags);
+ // Attach sections to segments.
+ void
+ attach_sections_to_segments();
+
private:
Layout(const Layout&);
Layout& operator=(const Layout&);
// Create the output sections for the symbol table.
void
- create_symtab_sections(const Input_objects*, Symbol_table*, off_t*);
+ create_symtab_sections(const Input_objects*, Symbol_table*,
+ unsigned int, off_t*);
// Create the .shstrtab section.
Output_section*
// Create the section header table.
void
- create_shdrs(off_t*);
+ create_shdrs(const Output_section* shstrtab_section, off_t*);
// Create the dynamic symbol table.
void
static const char*
linkonce_output_name(const char* name, size_t* plen);
+ // Return the number of allocated output sections.
+ size_t
+ allocated_output_section_count() const;
+
// Return the output section for NAME, TYPE and FLAGS.
Output_section*
get_output_section(const char* name, Stringpool::Key name_key,
Output_section*
choose_output_section(const Relobj* relobj, const char* name,
elfcpp::Elf_Word type, elfcpp::Elf_Xword flags,
- bool adjust_name);
+ bool is_input_section);
// Create a new Output_section.
Output_section*
// Attach a section to a segment.
void
- attach_to_segment(Output_section*, elfcpp::Elf_Xword flags);
+ attach_section_to_segment(Output_section*);
- // Allocate a previously unallocated output section.
+ // Attach an allocated section to a segment.
void
- allocate_output_section(Output_section*, elfcpp::Elf_Xword flags);
-
- // Turn a read-only output section into a read-write output section.
- void
- write_enable_output_section(Output_section*, elfcpp::Elf_Xword flags);
+ attach_allocated_section_to_segment(Output_section*);
// Set the final file offsets of all the segments.
off_t
segment_precedes(const Output_segment* seg1, const Output_segment* seg2);
// A mapping used for group signatures.
- typedef Unordered_map<std::string, bool> Signatures;
+ struct Kept_section
+ {
+ Kept_section()
+ : object_(NULL), shndx_(0), group_(false)
+ { }
+ Kept_section(Relobj* object, unsigned int shndx, bool group)
+ : object_(object), shndx_(shndx), group_(group)
+ { }
+ Relobj* object_;
+ unsigned int shndx_;
+ bool group_;
+ };
+ typedef Unordered_map<std::string, Kept_section> Signatures;
// Mapping from input section name/type/flags to output section. We
// use canonicalized strings here.
// The list of output sections which are not attached to any output
// segment.
Section_list unattached_section_list_;
+ // Whether we have attached the sections to the segments.
+ bool sections_are_attached_;
// The list of unattached Output_data objects which require special
// handling because they are not Output_sections.
Data_list special_output_list_;
Output_segment* tls_segment_;
// The SHT_SYMTAB output section.
Output_section* symtab_section_;
+ // The SHT_SYMTAB_SHNDX for the regular symbol table if there is one.
+ Output_symtab_xindex* symtab_xindex_;
// The SHT_DYNSYM output section if there is one.
Output_section* dynsym_section_;
+ // The SHT_SYMTAB_SHNDX for the dynamic symbol table if there is one.
+ Output_symtab_xindex* dynsym_xindex_;
// The SHT_DYNAMIC output section if there is one.
Output_section* dynamic_section_;
// The dynamic data which goes into dynamic_section_.
Output_section* eh_frame_section_;
// The exception frame data for eh_frame_section_.
Eh_frame* eh_frame_data_;
+ // Whether we have added eh_frame_data_ to the .eh_frame section.
+ bool added_eh_frame_data_;
// The exception frame header output section if there is one.
Output_section* eh_frame_hdr_section_;
// The space for the build ID checksum if there is one.
class Write_symbols_task : public Task
{
public:
- Write_symbols_task(const Symbol_table* symtab,
+ Write_symbols_task(const Layout* layout, const Symbol_table* symtab,
const Input_objects* input_objects,
const Stringpool* sympool, const Stringpool* dynpool,
Output_file* of, Task_token* final_blocker)
- : symtab_(symtab), input_objects_(input_objects), sympool_(sympool),
- dynpool_(dynpool), of_(of), final_blocker_(final_blocker)
+ : layout_(layout), symtab_(symtab), input_objects_(input_objects),
+ sympool_(sympool), dynpool_(dynpool), of_(of),
+ final_blocker_(final_blocker)
{ }
// The standard Task methods.
{ return "Write_symbols_task"; }
private:
+ const Layout* layout_;
const Symbol_table* symtab_;
const Input_objects* input_objects_;
const Stringpool* sympool_;
projects / deliverable / binutils-gdb.git / blobdiff