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authorSriraman Tallam <tmsriram@google.com>2009-01-28 02:25:33 +0000
committerSriraman Tallam <tmsriram@google.com>2009-01-28 02:25:33 +0000
commit6d03d481a0827abf92804f8ffaf9ab00593943be (patch)
tree617f1054036bd3cca35f897b225b37b4ce1a3b0c /gold/gold.h
parent7df3ce47694f5c804a9468d4c098825b5901216e (diff)
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2009-01-20 Sriraman Tallam <tmsriram@google.com>
* Makefile.am (CCFILES): Add gc.cc. (HFILES): Add gc.h. * Makefile.in: Regenerate. * gold.cc (Gc_runner): New class. (queue_initial_tasks): Call garbage collection related tasks when corresponding options are invoked. (queue_middle_gc_tasks): New function. (queue_middle_tasks): Reorder tasks to allow relocs to be read and processed early before laying out sections during garbage collection. * gold.h (queue_middle_gc_tasks): New function. (is_prefix_of): Move from "layout.cc". * i386.cc (Target_i386::gc_process_relocs): New function. * layout.cc (is_prefix_of): Remove. Move to "gold.h" * main.cc (main): Create object of class "Garbage_collection". * object.cc (Relobj::copy_symbols_data): New function. (Relobj::is_section_name_included): New function. (Sized_relobj::do_layout): Allow this function to be called twice during garbage collection and defer layout of section during the first call. * object.h (Relobj::get_symbols_data): New function. (Relobj::is_section_name_included): New function. (Relobj::copy_symbols_data): New function. (Relobj::set_symbols_data): New function. (Relobj::get_relocs_data): New function. (Relobj::set_relocs_data): New function. (Relobj::is_output_section_offset_invalid): New pure virtual function. (Relobj::gc_process_relocs): New function. (Relobj::do_gc_process_relocs): New pure virtual function. (Relobj::sd_): New data member. (Sized_relobj::is_output_section_offset_invalid): New function. (Sized_relobj::do_gc_process_relocs): New function. * options.h (General_options::gc_sections): Modify to not be a no-op. (General_options::print_gc_sections): New option. * plugin.cc (Plugin_finish::run): Remove function call to Plugin_manager::layout_deferred_objects. Move it to "gold.cc". * powerpc.cc (Target_powerpc::gc_process_relocs): New function. * reloc.cc (Read_relocs::run): Add task to process relocs and determine unreferenced sections when doing garbage collection. (Gc_process_relocs): New class. (Sized_relobj::do_gc_process_relocs): New function. (Sized_relobj::do_scan_relocs): Don't try to scan the relocs for sections that are garbage collected. * reloc.h (Gc_process_relocs): New class. * sparc.cc (Target_sparc::gc_process_relocs): New function. * symtab.cc (Symbol::should_add_dynsym_entry): Do not add entries for symbols whose corresponding sections are garbage collected. (Symbol_table::Symbol_table): Add new parameter for the garbage collection object. (Symbol_table::gc_mark_undef_symbols): New function. (Symbol_table::gc_mark_symbol_for_shlib): New function. (Symbol_table::gc_mark_dyn_syms): New function. (Symbol_table::resolve): Do not treat symbols seen in dynamic objects as garbage. (Symbol_table::add_from_object): Likewise. (Symbol_table::add_from_relobj): When building shared objects, do not treat externally visible symbols as garbage. (Symbol_table::sized_finalize_symbol): Do not check dynamic symbol table information for static and relocatable links. * symtab.h (Symbol_table::set_gc): New function. (Symbol_table::gc): New function. (Symbol_table::gc_mark_undef_symbols): New function. (Symbol_table::gc_mark_symbol_for_shlib): New function. (Symbol_table::gc_mark_dyn_syms): New function. (Symbol_table::gc_): New data member. * target.h (Sized_target::gc_process_relocs): New pure virtual function. * x86_64.cc (Target_x86_64::gc_process_relocs): New function. * testsuite/testfile.cc (Target_test::gc_process_relocs): New function.
Diffstat (limited to 'gold/gold.h')
-rw-r--r--gold/gold.h20
1 files changed, 19 insertions, 1 deletions
diff --git a/gold/gold.h b/gold/gold.h
index 63df994..7e38668 100644
--- a/gold/gold.h
+++ b/gold/gold.h
@@ -1,6 +1,6 @@
// gold.h -- general definitions for gold -*- C++ -*-
-// Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
+// Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
@@ -259,6 +259,18 @@ queue_initial_tasks(const General_options&,
Layout*,
Mapfile*);
+// Queue up the set of tasks to be done before
+// the middle set of tasks. Only used when garbage
+// collection is to be done.
+extern void
+queue_middle_gc_tasks(const General_options&,
+ const Task*,
+ const Input_objects*,
+ Symbol_table*,
+ Layout*,
+ Workqueue*,
+ Mapfile*);
+
// Queue up the middle set of tasks.
extern void
queue_middle_tasks(const General_options&,
@@ -278,6 +290,12 @@ queue_final_tasks(const General_options&,
Workqueue*,
Output_file* of);
+inline bool
+is_prefix_of(const char* prefix, const char* str)
+{
+ return strncmp(prefix, str, strlen(prefix)) == 0;
+}
+
} // End namespace gold.
#endif // !defined(GOLD_GOLD_H)