2010-04-09 Doug Kwan <dougkwan@google.com>

	* layout.cc (Layout::choose_output_section): Handle script section
	types.
	(Layout::make_output_section_for_script): Add section type parameter.
	Handle script section types.
	* layout.h (Layout::make_output_section_for_script): Add section
	type parameter.
	* output.cc (Output_section::Output_section): Initialize data member
	is_noload_.
	(Output_section::do_reset_address_and_file_offset): Do not set address
	to 0 if section is a NOLOAD section.
	* output.h (Output_section::is_noload): New method.
	(Output_section::set_is_noload): Ditto.
	(Output_section::is_noload_): New data member.
	* script-c.h (Script_section_type): New enum type.
	(struct Parser_output_section_header): Add new file section_type.
	* script-sections.cc (Sections_element::output_section_name): Add
	parameter for returning script section type.
	(Output_section_definition::output_section_name): Ditto.
	(Output_section_definition::section_type)P; New method.
	(Output_section_definiton::script_section_type_name): Ditto.
	(Output_section_definition::script_section_type_): New data member.
	(Output_section_definition::Output_section_definition): Initialize
	data member Output_section_definition::script_section_type_.
	(Output_section_definition::create_sections): Pass script section type
	to Layout::make_output_section_for_script.
	(Output_section_definition::output_section_name): Return script
	section type to caller.
	(Output_section_definition::set_section_address): Do not advance
	dot value and load address if section type is NOLOAD.  Set address
	of NOLOAD sections regardless of section flags.
	(Output_section_definition::print): Print section type if it is
	not SCRIPT_SECTION_TYPE_NONE.
	(Output_section_definition::section_type): New method.
	(Output_section_definition::script_section_type_name): Ditto.
	(Script_sections::output_section_name): Add new parameter
	PSECTION_TYPE for returning script section type.  Pass it to
	section elements.  Handle discard sections.
	(Sort_output_sections::operator()): Handle NOLOAD sections.
	* script-sections.h (Script_sections::Section_type): New enum type.
   	(Script_sections::output_section_name): Add a new parameter for
	returning script section type.
	* script.cc (script_keyword_parsecodes): Add keywords COPY, DSECT,
	INFO and NOLOAD.
	* yyscript.y (union): Add new field SECTION_TYPE.
	(COPY, DSECT, INFO, NOLOAD): New tokens.
	(opt_address_and_section_type): Change type to output_section_header.
	(section_type): New non-terminal
	(section_header): Handle section type.
 	(opt_address_and_section_type): Return section type value.

1 files changed, 14 insertions, 0 deletions

diff --git a/gold/script-c.h b/gold/script-c.h
index a646bda..77b4aa4 100644
--- a/gold/script-c.h
+++ b/gold/script-c.h
@@ -61,6 +61,18 @@ typedef Expression* Expression_ptr;
 typedef void* Expression_ptr;
 #endif
 
+/* Script_section type.  */
+enum Script_section_type
+{
+  /* No section type.  */
+  SCRIPT_SECTION_TYPE_NONE,
+  SCRIPT_SECTION_TYPE_NOLOAD,
+  SCRIPT_SECTION_TYPE_DSECT,
+  SCRIPT_SECTION_TYPE_COPY,
+  SCRIPT_SECTION_TYPE_INFO,
+  SCRIPT_SECTION_TYPE_OVERLAY
+};
+
 /* A constraint for whether to use a particular output section
    definition.  */
 
@@ -83,6 +95,8 @@ struct Parser_output_section_header
 {
   /* The address.  This may be NULL.  */
   Expression_ptr address;
+  /* Section type.  May be NULL string.  */ 
+  enum Script_section_type section_type;
   /* The load address, from the AT specifier.  This may be NULL.  */
   Expression_ptr load_address;
   /* The alignment, from the ALIGN specifier.  This may be NULL.  */