// layout.h -- lay out output file sections for gold -*- C++ -*-
-// Copyright (C) 2006-2015 Free Software Foundation, Inc.
+// Copyright (C) 2006-2018 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
extern bool
is_compressed_debug_section(const char* secname);
+// Return the name of the corresponding uncompressed debug section.
+extern std::string
+corresponding_uncompressed_section_name(std::string secname);
+
// Maintain a list of free space within a section, segment, or file.
// Used for incremental update links.
// The PLT.
ORDER_PLT,
+ // The hot text sections, prefixed by .text.hot.
+ ORDER_TEXT_HOT,
+
// The regular text sections.
ORDER_TEXT,
+ // The startup text sections, prefixed by .text.startup.
+ ORDER_TEXT_STARTUP,
+
+ // The startup text sections, prefixed by .text.startup.
+ ORDER_TEXT_EXIT,
+
+ // The unlikely text sections, prefixed by .text.unlikely.
+ ORDER_TEXT_UNLIKELY,
+
// The .fini section.
ORDER_FINI,
Output_section*
layout(Sized_relobj_file<size, big_endian> *object, unsigned int shndx,
const char* name, const elfcpp::Shdr<size, big_endian>& shdr,
- unsigned int reloc_shndx, unsigned int reloc_type, off_t* offset);
+ unsigned int sh_type, unsigned int reloc_shndx,
+ unsigned int reloc_type, off_t* offset);
std::map<Section_id, unsigned int>*
get_section_order_map()
// and ALIGN are the extra flags and alignment of the segment.
struct Unique_segment_info
{
- // Identifier for the segment. ELF segments dont have names. This
+ // Identifier for the segment. ELF segments don't have names. This
// is used as the name of the output section mapped to the segment.
const char* name;
// Additional segment flags.
unsigned int reloc_shndx, unsigned int reloc_type,
off_t* offset);
+ // After processing all input files, we call this to make sure that
+ // the optimized .eh_frame sections have been added to the output
+ // section.
+ void
+ finalize_eh_frame_section();
+
// Add .eh_frame information for a PLT. The FDE must start with a
// 4-byte PC-relative reference to the start of the PLT, followed by
// a 4-byte size of PLT.
size_t cie_length, const unsigned char* fde_data,
size_t fde_length);
+ // Remove .eh_frame information for a PLT. FDEs using the CIE must
+ // be removed in reverse order to the order they were added.
+ void
+ remove_eh_frame_for_plt(Output_data* plt, const unsigned char* cie_data,
+ size_t cie_length, const unsigned char* fde_data,
+ size_t fde_length);
+
// Scan a .debug_info or .debug_types section, and add summary
// information to the .gdb_index section.
template<int size, bool big_endian>
|| 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);
+ || strncmp(name, ".stab", sizeof(".stab") - 1) == 0
+ || strncmp(name, ".pdr", sizeof(".pdr") - 1) == 0);
}
// Return true if RELOBJ is an input file whose base name matches
const Output_data_reloc_generic* dyn_rel,
bool add_debug, bool dynrel_includes_plt);
- // If a treehash is necessary to compute the build ID, then queue
- // the necessary tasks and return a blocker that will unblock when
- // they finish. Otherwise return BUILD_ID_BLOCKER.
- Task_token*
- queue_build_id_tasks(Workqueue* workqueue, Task_token* build_id_blocker,
- Output_file* of);
+ // Add a target-specific dynamic tag with constant value.
+ void
+ add_target_specific_dynamic_tag(elfcpp::DT tag, unsigned int val);
// Compute and write out the build ID if needed.
void
- write_build_id(Output_file*) const;
+ write_build_id(Output_file*, unsigned char*, size_t) const;
// Rewrite output file in binary format.
void
};
static const Section_name_mapping section_name_mapping[];
static const int section_name_mapping_count;
+ static const Section_name_mapping text_section_name_mapping[];
+ static const int text_section_name_mapping_count;
+
+ // Find section name NAME in map and return the mapped name if found
+ // with the length set in PLEN.
+ static const char* match_section_name(const Section_name_mapping* map,
+ const int count, const char* name,
+ size_t* plen);
// During a relocatable link, a list of group sections and
// signatures.
void
create_gold_note();
- // Record whether the stack must be executable.
+ // Record whether the stack must be executable, and a user-supplied size.
void
- create_executable_stack_info();
+ create_stack_segment();
// Create a build ID note if needed.
void
// Create the output sections for the symbol table.
void
create_symtab_sections(const Input_objects*, Symbol_table*,
- unsigned int, off_t*);
+ unsigned int, off_t*, unsigned int);
// Create the .shstrtab section.
Output_section*
create_dynamic_symtab(const Input_objects*, Symbol_table*,
Output_section** pdynstr,
unsigned int* plocal_dynamic_count,
+ unsigned int* pforced_local_dynamic_count,
std::vector<Symbol*>* pdynamic_symbols,
Versions* versions);
choose_output_section(const Relobj* relobj, const char* name,
elfcpp::Elf_Word type, elfcpp::Elf_Xword flags,
bool is_input_section, Output_section_order order,
- bool is_relro);
+ bool is_relro, bool is_reloc, bool match_input_spec);
// Create a new Output_section.
Output_section*
Gdb_index* gdb_index_data_;
// The space for the build ID checksum if there is one.
Output_section_data* build_id_note_;
- // Temporary storage for tree hash of build ID.
- unsigned char* array_of_hashes_;
- // Size of array_of_hashes_ (in bytes).
- size_t size_of_array_of_hashes_;
- // Input view for computing tree hash of build ID. Freed in write_build_id().
- const unsigned char* input_view_;
// The output section containing dwarf abbreviations
Output_reduced_debug_abbrev_section* debug_abbrev_;
// The output section containing the dwarf debug info tree
Task_token* final_blocker_;
};
+// This task function handles computation of the build id.
+// When using --build-id=tree, it schedules the tasks that
+// compute the hashes for each chunk of the file. This task
+// cannot run until we have finalized the size of the output
+// file, after the completion of Write_after_input_sections_task.
+
+class Build_id_task_runner : public Task_function_runner
+{
+ public:
+ Build_id_task_runner(const General_options* options, const Layout* layout,
+ Output_file* of)
+ : options_(options), layout_(layout), of_(of)
+ { }
+
+ // Run the operation.
+ void
+ run(Workqueue*, const Task*);
+
+ private:
+ const General_options* options_;
+ const Layout* layout_;
+ Output_file* of_;
+};
+
// This task function handles closing the file.
class Close_task_runner : public Task_function_runner
{
public:
Close_task_runner(const General_options* options, const Layout* layout,
- Output_file* of)
- : options_(options), layout_(layout), of_(of)
+ Output_file* of, unsigned char* array_of_hashes,
+ size_t size_of_hashes)
+ : options_(options), layout_(layout), of_(of),
+ array_of_hashes_(array_of_hashes), size_of_hashes_(size_of_hashes)
{ }
// Run the operation.
const General_options* options_;
const Layout* layout_;
Output_file* of_;
+ unsigned char* const array_of_hashes_;
+ const size_t size_of_hashes_;
};
// A small helper function to align an address.
projects / deliverable / binutils-gdb.git / blobdiff