binutils-gdb/gold
H.J. Lu 2891b49104 Gold: Don't fail on R_X86_64_[REX_]GOTPCRELX relocations
This patch updates gold to treat the R_X86_64_GOTPCRELX and
R_X86_64_REX_GOTPCRELX relocations proposed in

https://groups.google.com/forum/#!topic/x86-64-abi/n9AWHogmVY0

the same as R_X86_64_GOTPCREL.  FIXME: Gold should perform the
transformations as suggested.

elfcpp/

	* x86_64.h (R_X86_64_GOTPCRELX): New.
	(R_X86_64_REX_GOTPCRELX): Likewise.

gold/

	* x86_64.cc (Target_x86_64<size>::Scan::get_reference_flags):
	Treat R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX the same
	as R_X86_64_GOTPCREL.
	(Target_x86_64<size>::Scan::local): Likewise.
	(Target_x86_64<size>::Scan::possible_function_pointer_reloc):
	Likewise.
	(Target_x86_64<size>::Scan::global): Likewise.
	(Target_x86_64<size>::Relocate::relocate): Likewise.
	(Target_x86_64<size>::Relocatable_size_for_reloc::get_size_for_reloc):
	Likewise.
2015-10-22 04:56:57 -07:00
..
po Update French Translations for LD and GOLD. 2015-06-08 15:04:17 +01:00
testsuite Feed right input object to x86_64_mov_to_lea1[12] 2015-10-20 10:46:47 -07:00
aarch64-reloc-property.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
aarch64-reloc-property.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
aarch64-reloc.def Support AARCH64_TLSLD_ADD_DTPREL_* relocations. 2015-03-30 14:11:48 -07:00
aarch64.cc gold: fix ABI pagesize for aarch64 2015-10-07 10:57:37 +02:00
aclocal.m4
archive.cc Fix internal error when linking an archive library with no preceding objects. 2015-07-21 12:42:07 -07:00
archive.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
arm-reloc-property.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
arm-reloc-property.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
arm-reloc.def ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
arm.cc 2015-07-23 Ian Coolidge <icoolidge@google.com> 2015-07-23 15:56:33 -07:00
attributes.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
attributes.h Fix an internal error in do_print_to_mapfile on Arm. 2015-03-02 10:10:52 -08:00
binary.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
binary.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ChangeLog Gold: Don't fail on R_X86_64_[REX_]GOTPCRELX relocations 2015-10-22 04:56:57 -07:00
common.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
common.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
compressed_output.cc Make default compression gABI compliant 2015-07-14 10:26:23 -07:00
compressed_output.h Add SHF_COMPRESSED section decompression to gold 2015-07-12 10:50:40 -07:00
config.in Regenerate configure in gold 2015-04-01 06:40:35 -07:00
configure Regenerate configure files 2015-07-27 07:56:32 -07:00
configure.ac Regenerate configure in gold 2015-04-01 06:40:35 -07:00
configure.tgt ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
copy-relocs.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
copy-relocs.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
cref.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
cref.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
debug.h Improve ODR checking in gold. 2015-04-09 11:53:01 -07:00
defstd.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
defstd.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
descriptors.cc Add extra debugging output for files and descriptors. 2015-02-03 20:03:41 -08:00
descriptors.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
dirsearch.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
dirsearch.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
dwarf_reader.cc Improve ODR checking in gold. 2015-04-09 11:53:01 -07:00
dwarf_reader.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
dwp.cc Support compressed debug sections in dynamic object files. 2015-03-21 18:50:11 -07:00
dwp.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
dynobj.cc Fix symbol versioning problems in PR 18703. 2015-08-18 19:24:41 -07:00
dynobj.h Add SHF_COMPRESSED section decompression to gold 2015-07-12 10:50:40 -07:00
ehframe.cc Fix failure in exception_static_test. 2015-03-09 10:12:06 -07:00
ehframe.h Fix failure in exception_static_test. 2015-03-09 10:12:06 -07:00
errors.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
errors.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
expression.cc Fix internal error in gold when script uses section address in assignment. 2015-08-25 18:11:19 -07:00
ffsll.c ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
fileread.cc Add extra debugging output for files and descriptors. 2015-02-03 20:03:41 -08:00
fileread.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
freebsd.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
ftruncate.c ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
gc.cc Use LIFO instead of FIFO to implement gc's transitive closure. 2015-04-17 11:51:36 -04:00
gc.h Change Section_id type to use Relobj* instead of Object*. 2015-05-02 08:43:27 -07:00
gdb-index.cc [gold] Recognize DWARF5/GCC5 DW_LANG_Fortran03 and DW_LANG_Fortran08. 2015-02-17 08:08:24 +01:00
gdb-index.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
gold-threads.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
gold-threads.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
gold.cc PR 17819: Fix --build-id=tree when using --compress-debug-sections. 2015-06-02 09:46:10 -07:00
gold.h [GOLD] Fix handling of __start/__stop symbols 2015-06-11 14:36:05 +09:30
i386.cc Gold: Don't fail on R_386_GOT32X relocation 2015-10-22 04:56:49 -07:00
icf.cc Change Section_id type to use Relobj* instead of Object*. 2015-05-02 08:43:27 -07:00
icf.h Change Section_id type to use Relobj* instead of Object*. 2015-05-02 08:43:27 -07:00
incremental-dump.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
incremental.cc Remove redundant include of "output.h". 2015-02-16 20:15:07 -08:00
incremental.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
int_encoding.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
int_encoding.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
layout.cc Clear SHF_COMPRESSED flag bit from input to output 2015-07-20 10:14:35 -07:00
layout.h Fix bug where SECTIONS clause does not handle compressed debug sections. 2015-06-11 13:21:10 -07:00
main.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
Makefile.am Add diststuff target to Makefile. 2015-06-04 22:58:39 -07:00
Makefile.in Add diststuff target to Makefile. 2015-06-04 22:58:39 -07:00
mapfile.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
mapfile.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
merge.cc Use a std::vector instead of a std::map to hold Input_merge_map. 2015-06-01 22:47:20 -04:00
merge.h Use a std::vector instead of a std::map to hold Input_merge_map. 2015-06-01 22:47:20 -04:00
mips.cc [MIPS] Map 'move' to 'or'. 2015-08-12 17:10:22 +01:00
mremap.c ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
nacl.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
nacl.h Fix Sniff_file to get an aligned view. 2015-06-02 14:13:32 -07:00
NEWS ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
object.cc Fix --no-as-needed when shared library is listed twice on the command line. 2015-08-25 18:39:20 -07:00
object.h Fix --no-as-needed when shared library is listed twice on the command line. 2015-08-25 18:39:20 -07:00
options.cc Change default to discard temporary local symbols in merge sections. 2015-06-04 20:58:08 -07:00
options.h Don't ignore "-m emulation" command line option 2015-10-16 08:05:09 -07:00
output.cc Change Section_id type to use Relobj* instead of Object*. 2015-05-02 08:43:27 -07:00
output.h Extend --compress-debug-sections in gold 2015-07-12 10:56:58 -07:00
parameters.cc Don't ignore "-m emulation" command line option 2015-10-16 08:05:09 -07:00
parameters.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
plugin.cc Change Section_id type to use Relobj* instead of Object*. 2015-05-02 08:43:27 -07:00
plugin.h Add SHF_COMPRESSED section decompression to gold 2015-07-12 10:50:40 -07:00
powerpc.cc [GOLD] ppc64 out-of-line register save/restore functions 2015-09-02 16:07:02 +09:30
pread.c ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
README ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
readsyms.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
readsyms.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
reduced_debug_output.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
reduced_debug_output.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
reloc-types.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
reloc.cc Add SHF_COMPRESSED section decompression to gold 2015-07-12 10:50:40 -07:00
reloc.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
resolve.cc Fix internal error caused by IFUNC patch. 2015-09-07 09:44:11 -07:00
script-c.h PR gold/18048: Fix INCLUDE directive support for gold 2015-03-21 19:54:15 -07:00
script-sections.cc Fix problem where script specified both address and region for a section. 2015-08-26 00:03:04 -07:00
script-sections.h Fix problem where script specified both address and region for a section. 2015-08-26 00:03:04 -07:00
script.cc Fix internal error in gold when script uses section address in assignment. 2015-08-25 18:11:19 -07:00
script.h Fix internal error in gold when script uses section address in assignment. 2015-08-25 18:11:19 -07:00
sparc.cc Fix bug when applying R_SPARC_GOTDATA_OP* relocations to local symbols. 2015-10-06 14:44:10 -07:00
stringpool.cc Fix bug when optimizing string pools of aligned strings. 2015-03-21 21:09:46 -07:00
stringpool.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
symtab.cc Fix internal error caused by IFUNC patch. 2015-09-07 09:44:11 -07:00
symtab.h Fix symbol versioning problems in PR 18703. 2015-08-18 19:24:41 -07:00
system.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
target-reloc.h gold --emit-relocs 2015-08-20 12:02:45 +09:30
target-select.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
target-select.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
target.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
target.h Change Section_id type to use Relobj* instead of Object*. 2015-05-02 08:43:27 -07:00
tilegx.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
timer.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
timer.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
tls.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
TODO
token.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
version.cc Correct printed year in copyright notices for gold. 2015-01-02 08:51:43 +10:30
workqueue-internal.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
workqueue-threads.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
workqueue.cc ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
workqueue.h ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
x86_64.cc Gold: Don't fail on R_X86_64_[REX_]GOTPCRELX relocations 2015-10-22 04:56:57 -07:00
yyscript.y PR gold/18048: Fix INCLUDE directive support for gold 2015-03-21 19:54:15 -07:00

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

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++/manual/source_code_style.html
    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.


Copyright (C) 2012-2015 Free Software Foundation, Inc.

Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.