Tree [37f059] master binutils-2.20.1 / gold /
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po 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
testsuite 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
ChangeLog 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
Makefile.am 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
Makefile.in 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
NEWS 2010-05-01 Peter A. Bigot Peter A. Bigot [d465c8] Check in from 2.19.1 distribution
README 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
TODO 2010-05-01 Peter A. Bigot Peter A. Bigot [d465c8] Check in from 2.19.1 distribution
aclocal.m4 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
archive.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
archive.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
arm.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
binary.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
binary.h 2010-05-01 Peter A. Bigot Peter A. Bigot [d465c8] Check in from 2.19.1 distribution
common.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
common.h 2010-05-01 Peter A. Bigot Peter A. Bigot [d465c8] Check in from 2.19.1 distribution
compressed_output.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [d465c8] Check in from 2.19.1 distribution
compressed_output.h 2010-05-01 Peter A. Bigot Peter A. Bigot [d465c8] Check in from 2.19.1 distribution
config.in 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
configure 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
configure.ac 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
configure.tgt 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
copy-relocs.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
copy-relocs.h 2010-05-01 Peter A. Bigot Peter A. Bigot [d465c8] Check in from 2.19.1 distribution
cref.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [d465c8] Check in from 2.19.1 distribution
cref.h 2010-05-01 Peter A. Bigot Peter A. Bigot [d465c8] Check in from 2.19.1 distribution
debug.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
defstd.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
defstd.h 2010-05-01 Peter A. Bigot Peter A. Bigot [d465c8] Check in from 2.19.1 distribution
descriptors.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
descriptors.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
dirsearch.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
dirsearch.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
dwarf_reader.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
dwarf_reader.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
dynobj.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
dynobj.h 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
ehframe.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [d465c8] Check in from 2.19.1 distribution
ehframe.h 2010-05-01 Peter A. Bigot Peter A. Bigot [d465c8] Check in from 2.19.1 distribution
errors.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
errors.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
expression.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [d465c8] Check in from 2.19.1 distribution
ffsll.c 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
fileread.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
fileread.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
freebsd.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
ftruncate.c 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
gc.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
gc.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
gold-threads.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
gold-threads.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
gold.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
gold.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
i386.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
icf.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
icf.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
incremental.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
incremental.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
layout.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
layout.h 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
main.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
mapfile.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
mapfile.h 2010-05-01 Peter A. Bigot Peter A. Bigot [d465c8] Check in from 2.19.1 distribution
merge.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
merge.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
mremap.c 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
object.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
object.h 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
options.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
options.h 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
output.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
output.h 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
parameters.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
parameters.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
plugin.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
plugin.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
powerpc.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
pread.c 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
readsyms.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
readsyms.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
reduced_debug_output.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
reduced_debug_output.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
reloc-types.h 2010-05-01 Peter A. Bigot Peter A. Bigot [d465c8] Check in from 2.19.1 distribution
reloc.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
reloc.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
resolve.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
script-c.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
script-sections.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
script-sections.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
script.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
script.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
sparc.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
stringpool.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
stringpool.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
symtab.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
symtab.h 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
target-reloc.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
target-select.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
target-select.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
target.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
target.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
tls.h 2010-05-01 Peter A. Bigot Peter A. Bigot [d465c8] Check in from 2.19.1 distribution
token.h 2010-05-01 Peter A. Bigot Peter A. Bigot [d465c8] Check in from 2.19.1 distribution
version.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
workqueue-internal.h 2010-05-01 Peter A. Bigot Peter A. Bigot [d465c8] Check in from 2.19.1 distribution
workqueue-threads.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [d465c8] Check in from 2.19.1 distribution
workqueue.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
workqueue.h 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution
x86_64.cc 2010-05-01 Peter A. Bigot Peter A. Bigot [37f059] Check in from 2.20.1 distribution
yyscript.y 2010-05-01 Peter A. Bigot Peter A. Bigot [8f6519] Check in from 2.20 distribution

Read Me

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.