binutils-gdb/gold
Ian Lance Taylor d12a5ea8c9 * layout.cc (Layout::relaxation_loop_body): Only clear load_seg if
the -Ttext option is not 0 modulo the page size.  If we clear
	load_seg, clear phdr_seg too.
	* testsuite/Makefile.am (check_PROGRAMS): Add flagstest_o_ttext_1.
	(flagstest_o_ttext_1): New target.
	(check_DATA): Add flagstest_o_ttext_2.
	(flagstest_o_ttext_2): New target.
	* testsuite/Makefile.in: Rebuild.
2011-07-25 22:48:42 +00:00
..
po * po/POTFILES.in: Regenerate. 2011-06-14 05:11:15 +00:00
testsuite * layout.cc (Layout::relaxation_loop_body): Only clear load_seg if 2011-07-25 22:48:42 +00:00
aclocal.m4 * Makefile.in: Rebuild with automake 1.11.1. 2010-08-19 23:42:03 +00:00
archive.cc 2011-07-13 Sriraman Tallam <tmsriram@google.com> 2011-07-14 00:55:18 +00:00
archive.h PR gold/12163 2011-06-02 20:13:23 +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 2011-07-05 Doug Kwan <dougkwan@google.com> 2011-07-06 17:58:42 +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.cc (Binary_to_elf::sized_convert): Don't crash if the 2011-05-29 17:17:39 +00:00
binary.h Add support for --format binary for input files. 2008-02-08 07:06:58 +00:00
ChangeLog 2011-07-22 Sriraman Tallam <tmsriram@google.com> 2011-07-22 22:38:42 +00:00
common.cc * common.cc (Symbol_table::do_allocate_commons_list): Call 2011-06-08 04:43:28 +00:00
common.h * gold.cc (queue_middle_gc_tasks): Use a separate blocker for each 2010-02-12 04:33:53 +00:00
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.ac: Check for sys/mman.h and mmap. Check for mremap 2011-04-12 18:06:16 +00:00
configure Correct last commit. 2011-07-02 00:31:35 +00:00
configure.ac Correct last commit. 2011-07-02 00:31:35 +00:00
configure.tgt 2010-02-02 Doug Kwan <dougkwan@google.com> 2010-02-03 05:36:55 +00:00
copy-relocs.cc * copy-relocs.cc (Copy_relocs::copy_reloc): Call make_copy_reloc 2011-06-08 03:50:12 +00:00
copy-relocs.h * copy-relocs.cc (Copy_relocs::copy_reloc): Call make_copy_reloc 2011-06-08 03:50:12 +00:00
cref.cc Fix typos in gold. 2010-12-14 19:03:30 +00:00
cref.h PR 10980 2010-01-05 21:52:51 +00:00
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 Update copyright years. Update language files. 2008-03-13 21:04:21 +00:00
descriptors.cc * descriptors.cc (set_close_on_exec): New function. 2011-04-22 23:20:28 +00:00
descriptors.h 2009-03-23 Ian Lance Taylor <iant@google.com> 2009-03-24 04:50:32 +00:00
dirsearch.cc * dirsearch.cc (Dir_cache::read_files): Ignore ENOTDIR errors. 2011-07-03 04:16:13 +00:00
dirsearch.h * dirsearch.cc (Dirsearch::find): Replace n1 and n2 parameters 2011-05-25 06:15:28 +00:00
dwarf_reader.cc 2011-04-05 Paul Pluzhnikov <ppluzhnikov@google.com> 2011-04-05 19:19:42 +00:00
dwarf_reader.h * dwarf_reader.cc (Sized_dwarf_line_info): Include all lines, 2011-03-10 01:31:33 +00:00
dynobj.cc PR gold/12525 2011-07-02 05:30:00 +00:00
dynobj.h PR gold/12525 2011-07-02 05:30:00 +00:00
ehframe.cc PR gold/12525 2011-07-02 00:03:25 +00:00
ehframe.h PR gold/12571 2011-07-01 22:05:01 +00:00
errors.cc * common.cc (Symbol_table::do_allocate_commons_list): Call 2011-06-08 04:43:28 +00:00
errors.h * common.cc (Symbol_table::do_allocate_commons_list): Call 2011-06-08 04:43:28 +00:00
expression.cc 2010-11-18 Doug Kwan <dougkwan@google.com> 2010-11-18 23:25:08 +00:00
ffsll.c * ffsll.c (ffsll): Correct implementation. 2009-03-30 23:17:11 +00:00
fileread.cc * dirsearch.cc (Dirsearch::find): Replace n1 and n2 parameters 2011-05-25 06:15:28 +00:00
fileread.h * archive.cc (Archive::include_member): Adjust call to 2011-04-12 00:44:48 +00:00
freebsd.h * options.h (class General_options): Add --print-output-format. 2011-07-15 21:43:08 +00:00
ftruncate.c * ffsll.c: New file. 2009-03-28 05:22:30 +00:00
gc.cc 2009-01-20 Sriraman Tallam <tmsriram@google.com> 2009-01-28 02:25:33 +00:00
gc.h * incremental-dump.cc (dump_incremental_inputs): Print dynamic reloc 2011-05-24 21:41:10 +00:00
gold-threads.cc Fix typos in gold. 2010-12-14 19:03:30 +00:00
gold-threads.h 2010-02-22 Doug Kwan <dougkwan@google.com> 2010-02-22 18:26:29 +00:00
gold.cc * options.h (class General_options): Add --print-output-format. 2011-07-15 21:43:08 +00:00
gold.h * common.cc (Symbol_table::do_allocate_commons_list): Call 2011-06-08 04:43:28 +00:00
i386.cc * i386.cc (class Output_data_plt_i386): Add layout_ field. 2011-07-15 15:31:54 +00:00
icf.cc * target.h (Target::can_check_for_function_pointers): Rewrite. 2011-06-28 21:15:42 +00:00
icf.h 2011-02-02 Sriraman Tallam <tmsriram@google.com> 2011-02-02 21:55:29 +00:00
incremental-dump.cc * common.cc (Symbol_table::do_allocate_commons_list): For incremental 2011-06-08 04:05:25 +00:00
incremental.cc PR gold/12372 2011-07-08 22:48:08 +00:00
incremental.h * incremental.cc (Sized_incremental_binary::setup_readers): Pass 2011-07-06 22:07:59 +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::relaxation_loop_body): Only clear load_seg if 2011-07-25 22:48:42 +00:00
layout.h * i386.cc (class Output_data_plt_i386): Add layout_ field. 2011-07-15 15:31:54 +00:00
main.cc * options.h (class General_options): Add --print-output-format. 2011-07-15 21:43:08 +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 * incremental-dump.cc (dump_incremental_inputs): Print dynamic reloc 2011-05-24 21:41:10 +00:00
mapfile.h * incremental-dump.cc (dump_incremental_inputs): Print dynamic reloc 2011-05-24 21:41:10 +00:00
merge.cc PR gold/12571 2011-07-01 22:05:01 +00:00
merge.h Fix typos in gold. 2010-12-14 19:03:30 +00:00
mremap.c * configure.ac: Check for sys/mman.h and mmap. Check for mremap 2011-04-12 18:06:16 +00:00
NEWS * NEWS: New file. 2008-03-25 21:55:29 +00:00
object.cc * object.cc (Sized_relobj_file::include_section_group): Add 2011-07-05 20:38:53 +00:00
object.h PR gold/12629 2011-06-30 00:50:13 +00:00
options.cc PR gold/12979 2011-07-11 16:19:51 +00:00
options.h * options.h (class General_options): Add --print-output-format. 2011-07-15 21:43:08 +00:00
output.cc 2011-07-13 Sriraman Tallam <tmsriram@google.com> 2011-07-14 00:55:18 +00:00
output.h 2011-07-13 Sriraman Tallam <tmsriram@google.com> 2011-07-14 00:55:18 +00:00
parameters.cc * options.h (class General_options): Add --print-output-format. 2011-07-15 21:43:08 +00:00
parameters.h * incremental.cc (Incremental_inputs::report_command_line): Ignore 2011-07-06 21:19:32 +00:00
plugin.cc 2011-07-13 Sriraman Tallam <tmsriram@google.com> 2011-07-14 00:55:18 +00:00
plugin.h 2011-07-13 Sriraman Tallam <tmsriram@google.com> 2011-07-14 00:55:18 +00:00
powerpc.cc PR gold/12934 2011-06-28 23:12:31 +00:00
pread.c * pread.c: Include stdio.h. 2009-10-09 23:10:15 +00:00
README * README: Update compilers known to work and fail. 2010-12-01 16:51:44 +00:00
readsyms.cc 2011-07-13 Sriraman Tallam <tmsriram@google.com> 2011-07-14 00:55:18 +00:00
readsyms.h * archive.cc (Archive::include_member): Adjust call to 2011-04-12 00:44:48 +00:00
reduced_debug_output.cc Fix typos in gold. 2010-12-14 19:03:30 +00:00
reduced_debug_output.h Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +00:00
reloc-types.h * copy-relocs.cc: New file. 2008-04-16 22:54:29 +00:00
reloc.cc * layout.cc: Include "object.h". 2011-06-25 00:40:57 +00:00
reloc.h * incremental-dump.cc (dump_incremental_inputs): Print dynamic reloc 2011-05-24 21:41:10 +00:00
resolve.cc PR gold/12279 2011-07-08 23:49:11 +00:00
script-c.h * README: Remove claim that MEMORY is not supported. 2010-09-08 16:10:33 +00:00
script-sections.cc PR gold/12898 2011-06-29 00:39:54 +00:00
script-sections.h * script-sections.h (class Script_sections): Make 2010-10-12 19:21:41 +00:00
script.cc * script.cc (Token::integer_value): Accept trailing M/m/K/k 2011-06-29 21:57:51 +00:00
script.h * archive.cc (Archive::include_member): Adjust call to 2011-04-12 00:44:48 +00:00
sparc.cc PR gold/12934 2011-06-28 23:12:31 +00:00
stringpool.cc * archive.cc: Formatting fixes: Remove whitespace between 2010-08-25 08:36:54 +00:00
stringpool.h * symtab.cc (Symbol::versioned_name): New function. 2011-06-28 05:39:45 +00:00
symtab.cc 2011-07-22 Sriraman Tallam <tmsriram@google.com> 2011-07-22 22:38:42 +00:00
symtab.h 2011-07-22 Sriraman Tallam <tmsriram@google.com> 2011-07-22 22:38:42 +00:00
target-reloc.h PR gold/12979 2011-07-11 16:19:51 +00:00
target-select.cc * options.h (class General_options): Add --print-output-format. 2011-07-15 21:43:08 +00:00
target-select.h * options.h (class General_options): Add --print-output-format. 2011-07-15 21:43:08 +00:00
target.cc * target.h (class Target): Add osabi_ field. 2011-06-28 22:25:14 +00:00
target.h PR gold/12372 2011-07-08 22:48:08 +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 Update copyright years. Update language files. 2008-03-13 21:04:21 +00:00
TODO * TODO: New file. 2008-04-03 00:33:37 +00:00
token.h * dirsearch.cc (Dirsearch::initialize): Add all blockers before 2010-02-11 07:42:17 +00:00
version.cc * version.cc (version_string): Bump to 1.11. 2011-01-24 22:27:55 +00:00
workqueue-internal.h Update copyright years. Update language files. 2008-03-13 21:04:21 +00:00
workqueue-threads.cc Update copyright years. Update language files. 2008-03-13 21:04:21 +00:00
workqueue.cc 2009-12-29 Rafael Espindola <espindola@google.com> 2009-12-29 23:45:10 +00:00
workqueue.h * gold.cc (queue_middle_tasks): If no input files were opened, 2010-02-23 17:42:26 +00:00
x86_64.cc * i386.cc (class Output_data_plt_i386): Add layout_ field. 2011-07-15 15:31:54 +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.