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More section layout code.

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This commit is contained in:
Ian Lance Taylor
2006-09-26 21:00:34 +00:00
parent 41f8ce693c
commit 54dc642545
17 changed files with 1427 additions and 103 deletions
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57
gold/layout.h
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@@ -16,8 +16,11 @@
namespace gold
{
class Input_objects;
class Output_section;
class Output_section_symtab;
class Output_segment;
class Output_data;
// This Task handles mapping the input sections to output sections and
// laying them out in memory.
@@ -28,7 +31,8 @@ class Layout_task : public Task
// OPTIONS is the command line options, INPUT_OBJECTS is the list of
// input objects, THIS_BLOCKER is a token which blocks this task
// from executing until all the input symbols have been read.
Layout_task(const General_options& options, const Object_list* input_objects,
Layout_task(const General_options& options,
const Input_objects* input_objects,
Task_token* this_blocker)
: options_(options), input_objects_(input_objects),
this_blocker_(this_blocker)
@@ -52,7 +56,7 @@ class Layout_task : public Task
Layout_task& operator=(const Layout_task&);
const General_options& options_;
const Object_list* input_objects_;
const Input_objects* input_objects_;
Task_token* this_blocker_;
};
@@ -61,10 +65,11 @@ class Layout_task : public Task
class Layout
{
public:
Layout(const General_options& options)
: options_(options), namepool_(), signatures_(),
section_name_map_(), segment_list_()
{ }
Layout(const General_options& options);
// Initialize the object.
void
init();
// Given an input section named NAME with data in SHDR from the
// object file OBJECT, return the output section where this input
@@ -88,6 +93,22 @@ class Layout
bool
add_comdat(const char*, bool group);
// Finalize the layout after all the input sections have been added.
void
finalize(const Input_objects*);
// The list of segments.
typedef std::vector<Output_segment*> Segment_list;
// The list of sections not attached to a segment.
typedef std::list<Output_section*> Section_list;
// The list of information to write out which is not attached to
// either a section or a segment.
typedef std::list<Output_data*> Data_list;
private:
Layout(const Layout&);
Layout& operator=(const Layout&);
@@ -102,6 +123,19 @@ class Layout
static const Linkonce_mapping linkonce_mapping[];
static const int linkonce_mapping_count;
// Lay out the local symbols from a SHT_SYMTAB section.
template<int size, bool big_endian>
void
add_symtab_locals(Object* object, const elfcpp::Shdr<size, big_endian>&);
// Create the output sections for the symbol table.
void
create_symtab_sections();
// Finalize the symbol table.
void
finalize_symtab();
// Return whether to include this section in the link.
template<int size, bool big_endian>
bool
@@ -153,14 +187,6 @@ class Layout
{ return Layout::segment_precedes(seg1, seg2); }
};
// The list of segments.
typedef std::list<Output_segment*> Segment_list;
// The list of sections not attached to a segment.
typedef std::list<Output_section*> Section_list;
// A reference to the options on the command line.
const General_options& options_;
// The output section names.
@@ -174,6 +200,9 @@ class Layout
// The list of output sections which are not attached to any output
// segment.
Section_list section_list_;
// The list of output data objects which are not attached to any
// output section or output segment.
Data_list data_list_;
};
} // End namespace gold.