patch / RFD: speed up linker map file generation

[Nick Clifton]

Hi Joern,


> 2004-05-19  J"orn Rennecke <joern.rennecke@superh.com>
> 
> 	* NEWS: Mention new linker map file generation and the
> 	--reduce-memory-overheads option.
> 	* ld.texinfo: Document --reduce-memory-overheads option.
> 	* ld.h (map_symbol_def): New struct.
> 	(struct user_section_struct, section_userdata_type): Rename to:
> 	(struct lean_user_section_struct, lean_section_userdata_type).
> 	(struct fat_user_section_struct, fat_section_userdata_type): New.
> 	(SECTION_USERDATA_SIZE): Define.
> 	(args_type): New member reduce_memory_overheads.
> 	* ldlang.c (map_obstack): New static variable.
> 	(init_map_userdata, print_all_symbols, sort_def_symbol): New functions.
> 	(lang_map): Unless command_line.reduce_memory_overheads is set,
> 	initialize lists of defined symbols for each section.
> 	(print_input_section): Unless command_line.reduce_memory_overheads
> 	is set, use print_all_symbols.
> 	(init_os): Use lean_section_userdata_type / SECTION_USERDATA_SIZE.
> 	* ldmain.c (main): Initialize command_line.reduce_memory_overheads.
> 	* lexsup.c (enum option_values): Add OPTION_REDUCE_MEMORY_OVERHEADS.
> 	(ld_options): Add entry for --reduce-memory-overheads.
> 	(parse_args): Handle OPTION_REDUCE_MEMORY_OVERHEADS.

Approved - please apply - and thanks very much for developing this patch.

Cheers
    Nick