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* incremental.cc (Incremental_inputs_header_data): Renamed from

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Incremental_input_header_data.
	(Incremental_inputs_header_data::data_size): New field.
	(Incremental_inputs_header_data::put_input_file_count): Renamed
	from input_file_count.
	(Incremental_inputs_header_data::put_command_line_offset): Renamed
	from command_line_offset.
	(Incremental_inputs_header_data::put_reserved): Renamed from
	put_reserved.
	(Incremental_inputs_entry_data): Renamed from
	Incremental_input_entry_data.
	(Incremental_inputs_entry_data::data_size): New field.
	(Incremental_inputs::report_command_line): New method.
	(Incremental_inputs::finalize): New method.
	(Incremental_inputs::create_incremental_inputs_data): New method.
	(Incremental_inputs::sized_create_incremental_inputs_data): New method.
	* incremental.h: New file.
	* layout.cc (Layout::Layout): Handle new incremental_inputs_.
       (Layout::finalize): Create incremental inputs section in
	incremental builds.
       (Layout::create_incremental_info_sections): New method.
	* layout.h (Layout::incremental_inputs): New method.
       (Layout::create_incremental_info_sections): New method.
       (Layout::incremental_inputs_): New field.
	* main.cc (main): Notify Incremental_input of the command line.
This commit is contained in:
Ian Lance Taylor
2009-04-24 15:44:02 +00:00
parent f50230ae44
commit 3ce2c28e3f
6 changed files with 284 additions and 15 deletions
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47
gold/layout.cc
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@@ -46,8 +46,9 @@
#include "reduced_debug_output.h"
#include "reloc.h"
#include "descriptors.h"
#include "layout.h"
#include "plugin.h"
#include "incremental.h"
#include "layout.h"
namespace gold
{
@@ -122,7 +123,8 @@ Layout::Layout(int number_of_input_files, Script_options* script_options)
input_without_gnu_stack_note_(false),
has_static_tls_(false),
any_postprocessing_sections_(false),
resized_signatures_(false)
resized_signatures_(false),
incremental_inputs_(NULL)
{
// Make space for more than enough segments for a typical file.
// This is just for efficiency--it's OK if we wind up needing more.
@@ -131,6 +133,10 @@ Layout::Layout(int number_of_input_files, Script_options* script_options)
// We expect two unattached Output_data objects: the file header and
// the segment headers.
this->special_output_list_.reserve(2);
// Initialize structure needed for an incremental build.
if (parameters->options().incremental())
this->incremental_inputs_ = new Incremental_inputs;
}
// Hash a key we use to look up an output section mapping.
@@ -1215,6 +1221,12 @@ Layout::finalize(const Input_objects* input_objects, Symbol_table* symtab,
this->create_version_sections(&versions, symtab, local_dynamic_count,
dynamic_symbols, dynstr);
}
if (this->incremental_inputs_)
{
this->incremental_inputs_->finalize();
this->create_incremental_info_sections();
}
// If there is a SECTIONS clause, put all the input sections into
// the required order.
@@ -1593,6 +1605,37 @@ Layout::create_build_id()
}
}
// Create .gnu_incremental_inputs and .gnu_incremental_strtab sections needed
// for the next run of incremental linking to check what has changed.
void
Layout::create_incremental_info_sections()
{
gold_assert(this->incremental_inputs_ != NULL);
// Add the .gnu_incremental_inputs section.
const char *incremental_inputs_name =
this->namepool_.add(".gnu_incremental_inputs", false, NULL);
Output_section* inputs_os =
this->make_output_section(incremental_inputs_name,
elfcpp::SHT_GNU_INCREMENTAL_INPUTS, 0);
Output_section_data* posd =
this->incremental_inputs_->create_incremental_inputs_section_data();
inputs_os->add_output_section_data(posd);
// Add the .gnu_incremental_strtab section.
const char *incremental_strtab_name =
this->namepool_.add(".gnu_incremental_strtab", false, NULL);
Output_section* strtab_os = this->make_output_section(incremental_strtab_name,
elfcpp::SHT_STRTAB,
0);
Output_data_strtab* strtab_data =
new Output_data_strtab(this->incremental_inputs_->get_stringpool());
strtab_os->add_output_section_data(strtab_data);
inputs_os->set_link_section(strtab_data);
}
// Return whether SEG1 should be before SEG2 in the output file. This
// is based entirely on the segment type and flags. When this is
// called the segment addresses has normally not yet been set.