binutils-gdb/gold
Ian Lance Taylor 0f3b89d87a * plugin.cc (class Plugin_rescan): Define new class.
(Plugin_manager::claim_file): Set any_claimed_.
	(Plugin_manager::save_archive): New function.
	(Plugin_manager::save_input_group): New function.
	(Plugin_manager::all_symbols_read): Create Plugin_rescan task if
	necessary.
	(Plugin_manager::new_undefined_symbol): New function.
	(Plugin_manager::rescan): New function.
	(Plugin_manager::rescannable_defines): New function.
	(Plugin_manager::add_input_file): Set any_added_.
	* plugin.h (class Plugin_manager): define new fields rescannable_,
	undefined_symbols_, any_claimed_, and any_added_.  Declare
	Plugin_rescan as friend.  Declare new functions.
	(Plugin_manager::Rescannable): Define type.
	(Plugin_manager::Rescannable_list): Define type.
	(Plugin_manager::Undefined_symbol_list): Define type.
	(Plugin_manager::Plugin_manager): Initialize new fields.
	* archive.cc (Archive::defines_symbol): New function.
	(Add_archive_symbols::run): Pass archive to plugins if any.
	* archive.h (class Archive): Declare defines_symbol.
	* readsyms.cc (Input_group::~Input_group): New function.
	(Finish_group::run): Pass input_group to plugins if any.
	* readsyms.h (class Input_group): Declare destructor.
	* symtab.cc (add_from_object): Pass undefined symbol to plugins if
	any.
2011-01-24 21:48:40 +00:00
..
po Updated Spanish translations. 2010-05-05 15:28:26 +00:00
testsuite gold: fix testsuite dependencies. 2010-12-16 18:28:44 +00:00
aclocal.m4 * Makefile.in: Rebuild with automake 1.11.1. 2010-08-19 23:42:03 +00:00
archive.cc * plugin.cc (class Plugin_rescan): Define new class. 2011-01-24 21:48:40 +00:00
archive.h * plugin.cc (class Plugin_rescan): Define new class. 2011-01-24 21:48:40 +00:00
arm-reloc-property.cc Fix typos in gold. 2010-12-14 19:03:30 +00:00
arm-reloc-property.h Fix typos in gold. 2010-12-14 19:03:30 +00:00
arm-reloc.def Fix typos in gold. 2010-12-14 19:03:30 +00:00
arm.cc Fix typos in gold. 2010-12-14 19:03:30 +00:00
attributes.cc * archive.cc: Formatting fixes: Remove whitespace between 2010-08-25 08:36:54 +00:00
attributes.h Fix typos in gold. 2010-12-14 19:03:30 +00:00
binary.cc
binary.h
ChangeLog * plugin.cc (class Plugin_rescan): Define new class. 2011-01-24 21:48:40 +00:00
common.cc * archive.cc: Formatting fixes: Remove whitespace between 2010-08-25 08:36:54 +00:00
common.h
compressed_output.cc * compressed_output.cc (zlib_decompress): Fix signature in 2010-07-13 11:59:02 +00:00
compressed_output.h * compressed_output.cc (zlib_decompress): New function. 2010-07-12 17:59:58 +00:00
config.in
configure * configure.ac: For --enable-gold, handle value `default' instead of 2010-11-23 13:39:57 +00:00
configure.ac * configure.ac: For --enable-gold, handle value `default' instead of 2010-11-23 13:39:57 +00:00
configure.tgt
copy-relocs.cc PR gold/10708 2010-11-05 21:14:33 +00:00
copy-relocs.h
cref.cc Fix typos in gold. 2010-12-14 19:03:30 +00:00
cref.h
debug.h * debug.h (DEBUG_INCREMENTAL): New flag. 2010-10-14 22:10:22 +00:00
defstd.cc PR 10893 2010-08-19 22:50:16 +00:00
defstd.h
descriptors.cc * descriptors.cc (Descriptors::open): Report correct name in error 2010-07-14 10:38:59 +00:00
descriptors.h
dirsearch.cc
dirsearch.h * archive.cc: Formatting fixes: Remove whitespace between 2010-08-25 08:36:54 +00:00
dwarf_reader.cc * dwarf_reader.cc (Sized_dwarf_line_info::read_lines): Only keep 2010-12-20 18:37:36 +00:00
dwarf_reader.h * dwarf_reader.cc (Sized_dwarf_line_info::read_lines): Only keep 2010-12-20 18:37:36 +00:00
dynobj.cc * archive.cc: Formatting fixes: Remove whitespace between 2010-08-25 08:36:54 +00:00
dynobj.h PR 11855 2010-08-02 13:34:33 +00:00
ehframe.cc Fix typos in gold. 2010-12-14 19:03:30 +00:00
ehframe.h * archive.cc: Formatting fixes: Remove whitespace between 2010-08-25 08:36:54 +00:00
errors.cc
errors.h
expression.cc 2010-11-18 Doug Kwan <dougkwan@google.com> 2010-11-18 23:25:08 +00:00
ffsll.c
fileread.cc gold: fix race in FileRead::~View. 2010-12-14 21:33:26 +00:00
fileread.h Fix typos in gold. 2010-12-14 19:03:30 +00:00
freebsd.h
ftruncate.c
gc.cc
gc.h * archive.cc: Formatting fixes: Remove whitespace between 2010-08-25 08:36:54 +00:00
gold-threads.cc Fix typos in gold. 2010-12-14 19:03:30 +00:00
gold-threads.h
gold.cc PR gold/10708 2010-11-05 21:14:33 +00:00
gold.h Fix typos in gold. 2010-12-14 19:03:30 +00:00
i386.cc Fix typos in gold. 2010-12-14 19:03:30 +00:00
icf.cc Fix typos in gold. 2010-12-14 19:03:30 +00:00
icf.h * archive.cc: Formatting fixes: Remove whitespace between 2010-08-25 08:36:54 +00:00
incremental-dump.cc * archive.cc: Formatting fixes: Remove whitespace between 2010-08-25 08:36:54 +00:00
incremental.cc * debug.h (DEBUG_INCREMENTAL): New flag. 2010-10-14 22:10:22 +00:00
incremental.h Fix typos in gold. 2010-12-14 19:03:30 +00:00
int_encoding.cc Fix typos in gold. 2010-12-14 19:03:30 +00:00
int_encoding.h * arm.cc (Target_arm<big_endian>::gc_process_relocs): Add template 2010-07-29 18:57:28 +00:00
layout.cc * layout.cc (Layout::layout_eh_frame): Mark a writable .eh_frame 2011-01-10 21:57:31 +00:00
layout.h Fix typos in gold. 2010-12-14 19:03:30 +00:00
main.cc Fix typos in gold. 2010-12-14 19:03:30 +00:00
Makefile.am Properly install gold/ld as default cross linker. 2010-04-27 16:05:54 +00:00
Makefile.in * Makefile.in: Rebuild with automake 1.11.1. 2010-08-19 23:42:03 +00:00
mapfile.cc PR gold/10708 2010-11-05 21:14:33 +00:00
mapfile.h
merge.cc * archive.cc: Formatting fixes: Remove whitespace between 2010-08-25 08:36:54 +00:00
merge.h Fix typos in gold. 2010-12-14 19:03:30 +00:00
mremap.c
NEWS
object.cc Fix typos in gold. 2010-12-14 19:03:30 +00:00
object.h Fix typos in gold. 2010-12-14 19:03:30 +00:00
options.cc Fix typos in gold. 2010-12-14 19:03:30 +00:00
options.h * layout.cc (Layout::layout_gnu_stack): Add warnings for executable 2010-12-09 23:19:50 +00:00
output.cc * output.h (Output_segment::set_section_addresses): Pass increase_relro 2010-11-16 19:18:31 +00:00
output.h * output.h (Output_data_reloc::add_output_section): Pass OD instead 2010-12-23 19:56:14 +00:00
parameters.cc * debug.h (DEBUG_INCREMENTAL): New flag. 2010-10-14 22:10:22 +00:00
parameters.h * debug.h (DEBUG_INCREMENTAL): New flag. 2010-10-14 22:10:22 +00:00
plugin.cc * plugin.cc (class Plugin_rescan): Define new class. 2011-01-24 21:48:40 +00:00
plugin.h * plugin.cc (class Plugin_rescan): Define new class. 2011-01-24 21:48:40 +00:00
powerpc.cc gold/ 2010-11-11 10:43:30 +00:00
pread.c
README * README: Update compilers known to work and fail. 2010-12-01 16:51:44 +00:00
readsyms.cc * plugin.cc (class Plugin_rescan): Define new class. 2011-01-24 21:48:40 +00:00
readsyms.h * plugin.cc (class Plugin_rescan): Define new class. 2011-01-24 21:48:40 +00:00
reduced_debug_output.cc Fix typos in gold. 2010-12-14 19:03:30 +00:00
reduced_debug_output.h
reloc-types.h
reloc.cc Fix typos in gold. 2010-12-14 19:03:30 +00:00
reloc.h * dwarf_reader.h (class Sized_dwarf_line_info): Add 2010-12-01 19:49:22 +00:00
resolve.cc * resolve.cc (symbol_to_bits): Report the value of the unsupported 2010-10-11 20:04:04 +00:00
script-c.h * README: Remove claim that MEMORY is not supported. 2010-09-08 16:10:33 +00:00
script-sections.cc * script-sections.cc (Sort_output_sections::operator()): Sort TLS 2011-01-04 21:46:06 +00:00
script-sections.h * script-sections.h (class Script_sections): Make 2010-10-12 19:21:41 +00:00
script.cc PR ld/12001 2010-11-03 17:18:23 +00:00
script.h PR ld/12001 2010-11-03 17:18:23 +00:00
sparc.cc Fix typos in gold. 2010-12-14 19:03:30 +00:00
stringpool.cc * archive.cc: Formatting fixes: Remove whitespace between 2010-08-25 08:36:54 +00:00
stringpool.h * merge.cc (Output_merge_string::do_add_input_section): Count strings 2010-08-03 20:38:09 +00:00
symtab.cc * plugin.cc (class Plugin_rescan): Define new class. 2011-01-24 21:48:40 +00:00
symtab.h Fix typos in gold. 2010-12-14 19:03:30 +00:00
target-reloc.h Fix typos in gold. 2010-12-14 19:03:30 +00:00
target-select.cc
target-select.h
target.cc Fix typos in gold. 2010-12-14 19:03:30 +00:00
target.h Fix typos in gold. 2010-12-14 19:03:30 +00:00
timer.cc Fix typos in gold. 2010-12-14 19:03:30 +00:00
timer.h Fix typos in gold. 2010-12-14 19:03:30 +00:00
tls.h
TODO
token.h
version.cc Update copyright in comments to 2011. 2011-01-01 21:42:17 +00:00
workqueue-internal.h
workqueue-threads.cc
workqueue.cc
workqueue.h
x86_64.cc PR gold/12324 2010-12-15 15:35:27 +00:00
yyscript.y * README: Remove claim that MEMORY is not supported. 2010-09-08 16:10:33 +00:00

gold is an ELF linker.  It is intended to have complete support for
ELF and to run as fast as possible on modern systems.  For normal use
it is a drop-in replacement for the older GNU linker.

gold is part of the GNU binutils.  See ../binutils/README for more
general notes, including where to send bug reports.

gold was originally developed at Google, and was contributed to the
Free Software Foundation in March 2008.  At Google it was designed by
Ian Lance Taylor, with major contributions by Cary Coutant, Craig
Silverstein, and Andrew Chatham.

The existing GNU linker manual is intended to be accurate
documentation for features which gold supports.  gold supports most of
the features of the GNU linker for ELF targets.  Notable
omissions--features of the GNU linker not currently supported in
gold--are:
  * MRI compatible linker scripts
  * cross-reference reports (--cref)
  * various other minor options


Notes on the code
=================

These are some notes which may be helpful to people working on the
source code of gold itself.

gold is written in C++.  It is a GNU program, and therefore follows
the GNU formatting standards as modified for C++.  Source documents in
order of decreasing precedence:
    http://www.gnu.org/prep/standards/
    http://gcc.gnu.org/onlinedocs/libstdc++/17_intro/C++STYLE
    http://www.zembu.com/eng/procs/c++style.html

The linker is intended to have complete support for cross-compilation,
while still supporting the normal case of native linking as fast as
possible.  In order to do this, many classes are actually templates
whose parameter is the ELF file class (e.g., 32 bits or 64 bits).  The
C++ code is the same, but we don't pay the execution time cost of
always using 64-bit integers if the target is 32 bits.  Many of these
class templates also have an endianness parameter: true for
big-endian, false for little-endian.

The linker is multi-threaded.  The Task class represents a single unit
of work.  Task objects are stored on a single Workqueue object.  Tasks
communicate via Task_token objects.  Task_token objects are only
manipulated while holding the master Workqueue lock.  Relatively few
mutexes are used.


Build requirements
==================

The gold source code uses templates heavily.  Building it requires a
recent version of g++.  g++ 4.0.3 and 4.1.3 are known to work.  g++
3.2, 3.4.3, and 4.1.2 are known to fail.

The linker script parser uses features which are only in newer
versions of bison.  bison 2.3 is known to work.  bison 1.26 is known
to fail.  If you are building gold from an official binutils release,
the bison output should already be included.