binutils-gdb/gold
Ian Lance Taylor fa17a3f432 * dirsearch.cc (Dirsearch::initialize): Add all blockers before
queueing any tasks.
	* gold.cc (queue_middle_gc_tasks): Likewise.  Fix final blocker.
	(queue_middle_tasks): Add all blockers before queueing any tasks.
	(queue_final_tasks): Likewise.
	* token.h (Task_token::add_blockers): New function.
	* object.h (Input_objects::number_of_relobjs): New function.
2010-02-11 07:42:17 +00:00
..
po
testsuite * i386.cc (Relocate::relocate_tls): A local symbol is final if not 2010-02-10 23:00:29 +00:00
aclocal.m4
archive.cc * archive.cc (Archive::add_symbols): Only look up a symbol without 2009-12-15 22:05:22 +00:00
archive.h
arm-reloc-property.cc 2010-02-04 Doug Kwan <dougkwan@google.com> 2010-02-05 00:30:35 +00:00
arm-reloc-property.h 2010-02-03 Doug Kwan <dougkwan@google.com> 2010-02-04 03:32:18 +00:00
arm-reloc.def 2010-02-03 Doug Kwan <dougkwan@google.com> 2010-02-04 03:32:18 +00:00
arm.cc * output.h (Output_data_dynamic::add_section_size): New method 2010-02-09 20:29:44 +00:00
attributes.cc 2009-12-28 Chris Demetriou <cgd@google.com> 2009-12-29 06:09:03 +00:00
attributes.h Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +00:00
binary.cc
binary.h
ChangeLog * dirsearch.cc (Dirsearch::initialize): Add all blockers before 2010-02-11 07:42:17 +00:00
common.cc PR 10979 2009-12-31 05:07:22 +00:00
common.h
compressed_output.cc Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +00:00
compressed_output.h Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +00:00
config.in 2009-12-17 Rafael Avila de Espindola <espindola@google.com> 2009-12-17 16:02:03 +00:00
configure * configure.ac: Rewrite targetobjs duplicate removal code to use 2010-02-06 20:14:01 +00:00
configure.ac * configure.ac: Rewrite targetobjs duplicate removal code to use 2010-02-06 20:14:01 +00:00
configure.tgt 2010-02-02 Doug Kwan <dougkwan@google.com> 2010-02-03 05:36:55 +00:00
copy-relocs.cc Update copyright notice. 2010-02-11 07:29:31 +00:00
copy-relocs.h
cref.cc PR 10980 2010-01-05 21:52:51 +00:00
cref.h PR 10980 2010-01-05 21:52:51 +00:00
debug.h
defstd.cc
defstd.h
descriptors.cc
descriptors.h
dirsearch.cc * dirsearch.cc (Dirsearch::initialize): Add all blockers before 2010-02-11 07:42:17 +00:00
dirsearch.h
dwarf_reader.cc Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +00:00
dwarf_reader.h 2009-12-08 Doug Kwan <dougkwan@google.com> 2009-12-09 03:02:28 +00:00
dynobj.cc * script.cc (class Lazy_demangler): Recreate--revert part of patch 2010-01-12 06:41:36 +00:00
dynobj.h PR 10980 2010-01-05 21:52:51 +00:00
ehframe.cc Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +00:00
ehframe.h Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +00:00
errors.cc PR 10980 2010-01-07 18:31:30 +00:00
errors.h
expression.cc Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +00:00
ffsll.c
fileread.cc Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +00:00
fileread.h Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +00:00
freebsd.h Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +00:00
ftruncate.c
gc.cc
gc.h 2010-01-20 Doug Kwan <dougkwan@google.com> 2010-01-20 17:29:52 +00:00
gold-threads.cc
gold-threads.h
gold.cc * dirsearch.cc (Dirsearch::initialize): Add all blockers before 2010-02-11 07:42:17 +00:00
gold.h * gc.h (Garbage_collection::Cident_section_map): New typedef. 2010-01-07 07:14:30 +00:00
i386.cc * i386.cc (Relocate::relocate_tls): A local symbol is final if not 2010-02-10 23:00:29 +00:00
icf.cc * gc.h (gc_process_relocs): Call is_section_foldable_candidate to 2010-01-04 19:08:39 +00:00
icf.h 2010-01-20 Doug Kwan <dougkwan@google.com> 2010-01-20 17:29:52 +00:00
incremental-dump.cc 2009-12-07 Rafael Avila de Espindola <espindola@google.com> 2009-12-07 21:36:52 +00:00
incremental.cc 2009-12-04 Rafael Avila de Espindola <espindola@google.com> 2009-12-04 18:18:18 +00:00
incremental.h Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +00:00
int_encoding.cc 2009-12-08 Doug Kwan <dougkwan@google.com> 2009-12-09 03:02:28 +00:00
int_encoding.h 2009-12-08 Doug Kwan <dougkwan@google.com> 2009-12-09 03:02:28 +00:00
layout.cc * output.h (Output_data_dynamic::add_section_size): New method 2010-02-09 20:29:44 +00:00
layout.h * output.h (Output_data_dynamic::add_section_size): New method 2010-02-09 20:29:44 +00:00
main.cc PR 10980 2010-01-05 21:52:51 +00:00
Makefile.am 2010-02-02 Doug Kwan <dougkwan@google.com> 2010-02-03 05:36:55 +00:00
Makefile.in 2010-02-02 Doug Kwan <dougkwan@google.com> 2010-02-03 05:36:55 +00:00
mapfile.cc Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +00:00
mapfile.h PR 10980 2010-01-05 21:52:51 +00:00
merge.cc Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +00:00
merge.h Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +00:00
mremap.c
NEWS
object.cc Fix comment. 2010-02-11 07:40:11 +00:00
object.h * dirsearch.cc (Dirsearch::initialize): Add all blockers before 2010-02-11 07:42:17 +00:00
options.cc 2010-01-22 Viktor Kutuzov <vkutuzov@accesssoftek.com> 2010-01-22 19:43:00 +00:00
options.h 2010-01-22 Viktor Kutuzov <vkutuzov@accesssoftek.com> 2010-01-22 19:43:00 +00:00
output.cc * output.h (Output_data_dynamic::add_section_size): New method 2010-02-09 20:29:44 +00:00
output.h * output.h (Output_data_dynamic::add_section_size): New method 2010-02-09 20:29:44 +00:00
parameters.cc 2010-02-02 Doug Kwan <dougkwan@google.com> 2010-02-03 05:36:55 +00:00
parameters.h
plugin.cc PR 10980 2010-01-05 21:52:51 +00:00
plugin.h PR 10980 2010-01-05 21:52:51 +00:00
powerpc.cc * output.h (Output_data_dynamic::add_section_size): New method 2010-02-09 20:29:44 +00:00
pread.c
README
readsyms.cc
readsyms.h * readsyms.cc (Read_symbols::incompatible_warning): New function. 2009-03-14 05:56:46 +00:00
reduced_debug_output.cc Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +00:00
reduced_debug_output.h Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +00:00
reloc-types.h
reloc.cc Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +00:00
reloc.h Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +00:00
resolve.cc 2010-02-04 Doug Kwan <dougkwan@google.com> 2010-02-05 00:30:35 +00:00
script-c.h
script-sections.cc 2010-01-22 Doug Kwan <dougkwan@google.com> 2010-01-23 01:07:59 +00:00
script-sections.h
script.cc * script.cc (Version_script_info::build_expression_list_lookup): 2010-01-12 06:52:58 +00:00
script.h * script.cc (class Lazy_demangler): Recreate--revert part of patch 2010-01-12 06:41:36 +00:00
sparc.cc * output.h (Output_data_dynamic::add_section_size): New method 2010-02-09 20:29:44 +00:00
stringpool.cc
stringpool.h
symtab.cc * script.cc (class Lazy_demangler): Recreate--revert part of patch 2010-01-12 06:41:36 +00:00
symtab.h PR 11108 2010-01-09 00:13:48 +00:00
target-reloc.h * target-reloc.h (visibility_error): New inline function. 2010-01-12 19:12:40 +00:00
target-select.cc Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +00:00
target-select.h Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +00:00
target.cc
target.h 2010-02-02 Doug Kwan <dougkwan@google.com> 2010-02-03 05:36:55 +00:00
timer.cc 2009-12-17 Rafael Avila de Espindola <espindola@google.com> 2009-12-17 16:02:03 +00:00
timer.h 2009-12-17 Rafael Avila de Espindola <espindola@google.com> 2009-12-17 16:02:03 +00:00
tls.h
TODO
token.h * dirsearch.cc (Dirsearch::initialize): Add all blockers before 2010-02-11 07:42:17 +00:00
version.cc Change to "Copyright 2010" 2010-01-08 19:48:09 +00:00
workqueue-internal.h
workqueue-threads.cc
workqueue.cc 2009-12-29 Rafael Espindola <espindola@google.com> 2009-12-29 23:45:10 +00:00
workqueue.h Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +00:00
x86_64.cc * i386.cc (Relocate::relocate_tls): A local symbol is final if not 2010-02-10 23:00:29 +00:00
yyscript.y

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:
  * MEMORY regions in linker scripts
  * 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 is known to work.  g++ 3.2 and g++
3.4.3 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.