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-rw-r--r--gold/layout.cc70
1 files changed, 44 insertions, 26 deletions
diff --git a/gold/layout.cc b/gold/layout.cc
index 108111a..c70e11c 100644
--- a/gold/layout.cc
+++ b/gold/layout.cc
@@ -86,8 +86,8 @@ Layout_task_runner::run(Workqueue* workqueue, const Task* task)
// Layout methods.
-Layout::Layout(const General_options& options, Script_options* script_options)
- : options_(options),
+Layout::Layout(int number_of_input_files, Script_options* script_options)
+ : number_of_input_files_(number_of_input_files),
script_options_(script_options),
namepool_(),
sympool_(),
@@ -97,7 +97,6 @@ Layout::Layout(const General_options& options, Script_options* script_options)
segment_list_(),
section_list_(),
unattached_section_list_(),
- sections_are_attached_(false),
special_output_list_(),
section_headers_(NULL),
tls_segment_(NULL),
@@ -117,11 +116,13 @@ Layout::Layout(const General_options& options, Script_options* script_options)
debug_info_(NULL),
group_signatures_(),
output_file_size_(-1),
+ sections_are_attached_(false),
input_requires_executable_stack_(false),
input_with_gnu_stack_note_(false),
input_without_gnu_stack_note_(false),
has_static_tls_(false),
- any_postprocessing_sections_(false)
+ any_postprocessing_sections_(false),
+ resized_signatures_(false)
{
// 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.
@@ -581,6 +582,10 @@ Layout::layout_group(Symbol_table* symtab,
os->set_info_symndx(sym);
else
{
+ // Reserve some space to minimize reallocations.
+ if (this->group_signatures_.empty())
+ this->group_signatures_.reserve(this->number_of_input_files_ * 16);
+
// We will wind up using a symbol whose name is the signature.
// So just put the signature in the symbol name pool to save it.
signature = symtab->canonicalize_name(signature);
@@ -631,7 +636,7 @@ Layout::layout_eh_frame(Sized_relobj<size, big_endian>* object,
this->eh_frame_section_ = os;
this->eh_frame_data_ = new Eh_frame();
- if (this->options_.eh_frame_hdr())
+ if (parameters->options().eh_frame_hdr())
{
Output_section* hdr_os =
this->choose_output_section(NULL,
@@ -751,12 +756,13 @@ Layout::make_output_section(const char* name, elfcpp::Elf_Word type,
{
Output_section* os;
if ((flags & elfcpp::SHF_ALLOC) == 0
- && strcmp(this->options_.compress_debug_sections(), "none") != 0
+ && strcmp(parameters->options().compress_debug_sections(), "none") != 0
&& is_compressible_debug_section(name))
- os = new Output_compressed_section(&this->options_, name, type, flags);
+ os = new Output_compressed_section(&parameters->options(), name, type,
+ flags);
else if ((flags & elfcpp::SHF_ALLOC) == 0
- && this->options_.strip_debug_non_line()
+ && parameters->options().strip_debug_non_line()
&& strcmp(".debug_abbrev", name) == 0)
{
os = this->debug_abbrev_ = new Output_reduced_debug_abbrev_section(
@@ -765,7 +771,7 @@ Layout::make_output_section(const char* name, elfcpp::Elf_Word type,
this->debug_info_->set_abbreviations(this->debug_abbrev_);
}
else if ((flags & elfcpp::SHF_ALLOC) == 0
- && this->options_.strip_debug_non_line()
+ && parameters->options().strip_debug_non_line()
&& strcmp(".debug_info", name) == 0)
{
os = this->debug_info_ = new Output_reduced_debug_info_section(
@@ -877,7 +883,7 @@ Layout::attach_allocated_section_to_segment(Output_section* os)
{
// If -Tbss was specified, we need to separate the data
// and BSS segments.
- if (this->options_.user_set_Tbss())
+ if (parameters->options().user_set_Tbss())
{
if ((os->type() == elfcpp::SHT_NOBITS)
== (*p)->has_any_data_sections())
@@ -1220,7 +1226,8 @@ Layout::finalize(const Input_objects* input_objects, Symbol_table* symtab,
else
load_seg = this->find_first_load_seg();
- if (this->options_.oformat_enum() != General_options::OBJECT_FORMAT_ELF)
+ if (parameters->options().oformat_enum()
+ != General_options::OBJECT_FORMAT_ELF)
load_seg = NULL;
gold_assert(phdr_seg == NULL || load_seg != NULL);
@@ -1241,7 +1248,7 @@ Layout::finalize(const Input_objects* input_objects, Symbol_table* symtab,
// Lay out the file header.
Output_file_header* file_header;
file_header = new Output_file_header(target, symtab, segment_headers,
- this->options_.entry());
+ parameters->options().entry());
if (load_seg != NULL)
load_seg->add_initial_output_data(file_header);
@@ -1454,8 +1461,8 @@ void
Layout::create_executable_stack_info(const Target* target)
{
bool is_stack_executable;
- if (this->options_.is_execstack_set())
- is_stack_executable = this->options_.is_stack_executable();
+ if (parameters->options().is_execstack_set())
+ is_stack_executable = parameters->options().is_stack_executable();
else if (!this->input_with_gnu_stack_note_)
return;
else
@@ -1717,8 +1724,8 @@ Layout::set_segment_offsets(const Target* target, Output_segment* load_seg,
// Find the PT_LOAD segments, and set their addresses and offsets
// and their section's addresses and offsets.
uint64_t addr;
- if (this->options_.user_set_Ttext())
- addr = this->options_.Ttext();
+ if (parameters->options().user_set_Ttext())
+ addr = parameters->options().Ttext();
else if (parameters->options().shared())
addr = 0;
else
@@ -1761,19 +1768,19 @@ Layout::set_segment_offsets(const Target* target, Output_segment* load_seg,
// the physical address.
addr = (*p)->paddr();
}
- else if (this->options_.user_set_Tdata()
+ else if (parameters->options().user_set_Tdata()
&& ((*p)->flags() & elfcpp::PF_W) != 0
- && (!this->options_.user_set_Tbss()
+ && (!parameters->options().user_set_Tbss()
|| (*p)->has_any_data_sections()))
{
- addr = this->options_.Tdata();
+ addr = parameters->options().Tdata();
are_addresses_set = true;
}
- else if (this->options_.user_set_Tbss()
+ else if (parameters->options().user_set_Tbss()
&& ((*p)->flags() & elfcpp::PF_W) != 0
&& !(*p)->has_any_data_sections())
{
- addr = this->options_.Tbss();
+ addr = parameters->options().Tbss();
are_addresses_set = true;
}
@@ -2616,7 +2623,7 @@ Layout::sized_create_version_sections(
void
Layout::create_interp(const Target* target)
{
- const char* interp = this->options_.dynamic_linker();
+ const char* interp = parameters->options().dynamic_linker();
if (interp == NULL)
{
interp = target->dynamic_linker();
@@ -2668,7 +2675,7 @@ Layout::finish_dynamic_section(const Input_objects* input_objects,
if (parameters->options().shared())
{
- const char* soname = this->options_.soname();
+ const char* soname = parameters->options().soname();
if (soname != NULL)
odyn->add_string(elfcpp::DT_SONAME, soname);
}
@@ -2685,7 +2692,7 @@ Layout::finish_dynamic_section(const Input_objects* input_objects,
// FIXME: Support DT_INIT_ARRAY and DT_FINI_ARRAY.
// Add a DT_RPATH entry if needed.
- const General_options::Dir_list& rpath(this->options_.rpath());
+ const General_options::Dir_list& rpath(parameters->options().rpath());
if (!rpath.empty())
{
std::string rpath_val;
@@ -2948,10 +2955,21 @@ Layout::output_section_name(const char* name, size_t* plen)
// CANDIDATE.
bool
-Layout::find_or_add_kept_section(const std::string name,
+Layout::find_or_add_kept_section(const std::string& name,
Kept_section* candidate,
Kept_section** kept_section)
{
+ // It's normal to see a couple of entries here, for the x86 thunk
+ // sections. If we see more than a few, we're linking a C++
+ // program, and we resize to get more space to minimize rehashing.
+ if (this->signatures_.size() > 4
+ && !this->resized_signatures_)
+ {
+ reserve_unordered_map(&this->signatures_,
+ this->number_of_input_files_ * 64);
+ this->resized_signatures_ = true;
+ }
+
std::pair<Signatures::iterator, bool> ins(
this->signatures_.insert(std::make_pair(name, *candidate)));
@@ -3188,7 +3206,7 @@ Layout::write_build_id(Output_file* of) const
void
Layout::write_binary(Output_file* in) const
{
- gold_assert(this->options_.oformat_enum()
+ gold_assert(parameters->options().oformat_enum()
== General_options::OBJECT_FORMAT_BINARY);
// Get the size of the binary file.
generated by cgit v1.1 at 2024-12-12 23:47:25 +0000