old-cross-binutils/gold
Ian Lance Taylor 534b4e5f33 PR gold/12893
* resolve.cc (Symbol_table::resolve): Don't give an error if a
	symbol is redefined with the exact same object and value.
2011-06-17 13:31:33 +00:00
..
po * po/POTFILES.in: Regenerate. 2011-06-14 05:11:15 +00:00
testsuite PR gold/12804 2011-06-09 00:51:39 +00:00
aclocal.m4 * Makefile.in: Rebuild with automake 1.11.1. 2010-08-19 23:42:03 +00:00
archive.cc PR gold/12163 2011-06-02 20:13:23 +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 2011-05-31 Doug Kwan <dougkwan@google.com> 2011-06-01 19:59:42 +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 PR gold/12893 2011-06-17 13:31:33 +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 * configure.ac: Check for sys/mman.h and mmap. Check for mremap 2011-04-12 18:06:16 +00:00
configure.ac * configure.ac: Check for sys/mman.h and mmap. Check for mremap 2011-04-12 18:06:16 +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 (Dirsearch::find): Replace n1 and n2 parameters 2011-05-25 06:15:28 +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 * archive.cc (Archive::include_member): Adjust call to 2011-04-12 00:44:48 +00:00
dynobj.h Fix spelling mistakes. 2011-06-02 13:43:24 +00:00
ehframe.cc * incremental-dump.cc (dump_incremental_inputs): Print dynamic reloc 2011-05-24 21:41:10 +00:00
ehframe.h * incremental-dump.cc (dump_incremental_inputs): Print dynamic reloc 2011-05-24 21:41:10 +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 Revert -Wshadow changes, all changes from: 2009-12-14 19:53:05 +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 PR gold/12804 2011-06-09 18:18:44 +00:00
gold.h * common.cc (Symbol_table::do_allocate_commons_list): Call 2011-06-08 04:43:28 +00:00
i386.cc * incremental-dump.cc (dump_incremental_inputs): Print dynamic reloc 2011-05-24 21:41:10 +00:00
icf.cc 2011-02-02 Sriraman Tallam <tmsriram@google.com> 2011-02-02 21:55:29 +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 * common.cc (Symbol_table::do_allocate_commons_list): For incremental 2011-06-08 04:05:25 +00:00
incremental.h * copy-relocs.cc (Copy_relocs::copy_reloc): Call make_copy_reloc 2011-06-08 03:50:12 +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 PR gold/12880 2011-06-17 13:00:01 +00:00
layout.h PR gold/12880 2011-06-17 13:00:01 +00:00
main.cc * common.cc (Symbol_table::do_allocate_commons_list): Call 2011-06-08 04:43:28 +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 * 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 * 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::do_layout): Keep warning sections 2011-06-17 11:20:42 +00:00
object.h * dynobj.h (Dynobj::do_dynobj): New function. 2011-05-24 21:57:28 +00:00
options.cc * archive.cc (Archive::include_member): Adjust call to 2011-04-12 00:44:48 +00:00
options.h * gold.cc (queue_initial_tasks): Pass incremental base filename 2011-05-24 23:31:07 +00:00
output.cc * common.cc (Symbol_table::do_allocate_commons_list): Call 2011-06-08 04:43:28 +00:00
output.h * common.cc (Symbol_table::do_allocate_commons_list): For incremental 2011-06-08 04:05:25 +00:00
parameters.cc * archive.cc (Library_base::should_include_member): Pull in object 2011-05-25 00:17:47 +00:00
parameters.h * archive.cc (Library_base::should_include_member): Pull in object 2011-05-25 00:17:47 +00:00
plugin.cc * archive.cc (Library_base::should_include_member): Pull in object 2011-05-25 00:17:47 +00:00
plugin.h * archive.cc (Archive::include_member): Adjust call to 2011-04-12 00:44:48 +00:00
powerpc.cc * incremental-dump.cc (dump_incremental_inputs): Print dynamic reloc 2011-05-24 21:41:10 +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 * archive.cc (Archive::include_member): Adjust call to 2011-04-12 00:44:48 +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 * reloc.cc (Sized_relobj_file::do_read_relocs): Ignore empty reloc 2011-05-31 04:26:49 +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/12893 2011-06-17 13:31:33 +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/12880 2011-06-17 13:00:01 +00:00
script-sections.h * script-sections.h (class Script_sections): Make 2010-10-12 19:21:41 +00:00
script.cc * archive.cc (Archive::include_member): Adjust call to 2011-04-12 00:44:48 +00:00
script.h * archive.cc (Archive::include_member): Adjust call to 2011-04-12 00:44:48 +00:00
sparc.cc * incremental-dump.cc (dump_incremental_inputs): Print dynamic reloc 2011-05-24 21:41:10 +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 * symtab.cc (Warnings::issue_warning): Don't warn if relocation 2011-06-16 17:55:48 +00:00
symtab.h * common.cc (Symbol_table::do_allocate_commons_list): For incremental 2011-06-08 04:05:25 +00:00
target-reloc.h * incremental-dump.cc (dump_incremental_inputs): Print dynamic reloc 2011-05-24 21:41:10 +00:00
target-select.cc * gold-threads.h (class Once): Define. 2010-02-12 03:23:26 +00:00
target-select.h * gold-threads.h (class Once): Define. 2010-02-12 03:23:26 +00:00
target.cc * incremental-dump.cc (dump_incremental_inputs): Print dynamic reloc 2011-05-24 21:41:10 +00:00
target.h * copy-relocs.cc (Copy_relocs::copy_reloc): Call make_copy_reloc 2011-06-08 03:50:12 +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 * x86_64.cc (check_non_pic): Add gsym parameter. Change all 2011-06-17 11:15:34 +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.