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mirror of https://sourceware.org/git/binutils-gdb.git synced 2024-12-27 04:52:05 +08:00
binutils-gdb/gold
Alan Modra a47622ac1b Allow both signed and unsigned fields in PowerPC cmpli insn
There are legitimate reasons to allow a signed value in a cmpli insn
field, for example to test for a "stw r1,lock@sdarel(r13)" instruction
in user code, a kernel might use
	subis r3,r3,STW_R1_0R13@ha	# subtract off high part
	cmplwi r3,lock@sdarel		# is low part accessing lock?
Since the lock@sdarel may take a range of -32768 to 32767,
the allowed range of cmpli immediate must be at least [-32768,65535].

bfd/
	* elf32-ppc.c (ppc_elf_relocate_section): Treat field of cmpli
	insn as a bitfield; Use complain_overflow_bitfield.
	* elf64-ppc.c (ppc64_elf_relocate_section): Likewise.
opcodes/
	* ppc-opc.c (UISIGNOPT): Define and use with cmpli.
gas/
	* config/tc-ppc.c (ppc_insert_operand): Handle PPC_OPERAND_SIGNOPT
	on unsigned fields.  Comment on PPC_OPERAND_SIGNOPT signed fields
	in 64-bit mode.
gold/
	* powerpc.cc (relocate): Treat field of cmpli insn as a bitfield.
2014-06-07 14:55:11 +09:30
..
po Update copyright years 2014-03-05 22:16:15 +10:30
testsuite Fix gold plugin_test failures on PowerPC64 ELFv2 2014-06-03 10:47:55 +09:30
aclocal.m4
archive.cc Update copyright years 2014-03-05 22:16:15 +10:30
archive.h Update copyright years 2014-03-05 22:16:15 +10:30
arm-reloc-property.cc Update copyright years 2014-03-05 22:16:15 +10:30
arm-reloc-property.h Update copyright years 2014-03-05 22:16:15 +10:30
arm-reloc.def Update copyright years 2014-03-05 22:16:15 +10:30
arm.cc With -pie and x86, the linker complains if it sees a PC-relative relocation 2014-05-13 10:55:11 -07:00
attributes.cc Update copyright years 2014-03-05 22:16:15 +10:30
attributes.h Update copyright years 2014-03-05 22:16:15 +10:30
binary.cc Update copyright years 2014-03-05 22:16:15 +10:30
binary.h Update copyright years 2014-03-05 22:16:15 +10:30
ChangeLog Allow both signed and unsigned fields in PowerPC cmpli insn 2014-06-07 14:55:11 +09:30
common.cc Update copyright years 2014-03-05 22:16:15 +10:30
common.h Update copyright years 2014-03-05 22:16:15 +10:30
compressed_output.cc Update copyright years 2014-03-05 22:16:15 +10:30
compressed_output.h Update copyright years 2014-03-05 22:16:15 +10:30
config.in Add configure checks for <unordered_set> and <unordered_map>. 2013-12-18 15:53:31 -08:00
configure Make it easy to make --disable-werror the default for both binutils and gdb 2014-06-05 05:47:29 -07:00
configure.ac Modify gold testsuite to disable plugins added by GCC driver. 2014-04-02 15:04:36 -07:00
configure.tgt Update copyright years 2014-03-05 22:16:15 +10:30
copy-relocs.cc Allow target to derive from Copy_relocs class. 2014-04-15 11:56:18 -07:00
copy-relocs.h Allow target to derive from Copy_relocs class. 2014-04-15 11:56:18 -07:00
cref.cc Update copyright years 2014-03-05 22:16:15 +10:30
cref.h Update copyright years 2014-03-05 22:16:15 +10:30
debug.h Update copyright years 2014-03-05 22:16:15 +10:30
defstd.cc Fix handling of __ehdr_start when it cannot be defined. 2014-05-02 16:33:43 -07:00
defstd.h Update copyright years 2014-03-05 22:16:15 +10:30
descriptors.cc Update copyright years 2014-03-05 22:16:15 +10:30
descriptors.h Update copyright years 2014-03-05 22:16:15 +10:30
dirsearch.cc Update copyright years 2014-03-05 22:16:15 +10:30
dirsearch.h Update copyright years 2014-03-05 22:16:15 +10:30
dwarf_reader.cc Strip .debug_gnu_pubnames and .debug_gnu_pubtypes when building .gdb_index. 2014-06-06 16:24:30 -07:00
dwarf_reader.h Strip .debug_gnu_pubnames and .debug_gnu_pubtypes when building .gdb_index. 2014-06-06 16:24:30 -07:00
dwp.cc Update copyright years 2014-03-05 22:16:15 +10:30
dwp.h Update copyright years 2014-03-05 22:16:15 +10:30
dynobj.cc Update copyright years 2014-03-05 22:16:15 +10:30
dynobj.h Update copyright years 2014-03-05 22:16:15 +10:30
ehframe.cc Update copyright years 2014-03-05 22:16:15 +10:30
ehframe.h Update copyright years 2014-03-05 22:16:15 +10:30
errors.cc Update copyright years 2014-03-05 22:16:15 +10:30
errors.h Update copyright years 2014-03-05 22:16:15 +10:30
expression.cc Update copyright years 2014-03-05 22:16:15 +10:30
ffsll.c Update copyright years 2014-03-05 22:16:15 +10:30
fileread.cc Update copyright years 2014-03-05 22:16:15 +10:30
fileread.h Update copyright years 2014-03-05 22:16:15 +10:30
freebsd.h Update copyright years 2014-03-05 22:16:15 +10:30
ftruncate.c Update copyright years 2014-03-05 22:16:15 +10:30
gc.cc Update copyright years 2014-03-05 22:16:15 +10:30
gc.h Update copyright years 2014-03-05 22:16:15 +10:30
gdb-index.cc Don't complain about the source language when we have pubnames/pubtypes info. 2014-05-05 15:23:14 -07:00
gdb-index.h Update copyright years 2014-03-05 22:16:15 +10:30
gold-threads.cc Update copyright years 2014-03-05 22:16:15 +10:30
gold-threads.h Update copyright years 2014-03-05 22:16:15 +10:30
gold.cc Update copyright years 2014-03-05 22:16:15 +10:30
gold.h Update copyright years 2014-03-05 22:16:15 +10:30
i386.cc With -pie and x86, the linker complains if it sees a PC-relative relocation 2014-05-13 10:55:11 -07:00
icf.cc 2014-04-02 Sriraman Tallam <tmsriram@google.com> 2014-04-02 17:07:47 -07:00
icf.h Update copyright years 2014-03-05 22:16:15 +10:30
incremental-dump.cc Update copyright years 2014-03-05 22:16:15 +10:30
incremental.cc Update copyright years 2014-03-05 22:16:15 +10:30
incremental.h Update copyright years 2014-03-05 22:16:15 +10:30
int_encoding.cc Update copyright years 2014-03-05 22:16:15 +10:30
int_encoding.h Update copyright years 2014-03-05 22:16:15 +10:30
layout.cc Strip .debug_gnu_pubnames and .debug_gnu_pubtypes when building .gdb_index. 2014-06-06 16:24:30 -07:00
layout.h Update copyright years 2014-03-05 22:16:15 +10:30
main.cc Update copyright years 2014-03-05 22:16:15 +10:30
Makefile.am Make it easy to make --disable-werror the default for both binutils and gdb 2014-06-05 05:47:29 -07:00
Makefile.in Make it easy to make --disable-werror the default for both binutils and gdb 2014-06-05 05:47:29 -07:00
mapfile.cc Update copyright years 2014-03-05 22:16:15 +10:30
mapfile.h Update copyright years 2014-03-05 22:16:15 +10:30
merge.cc Update copyright years 2014-03-05 22:16:15 +10:30
merge.h Update copyright years 2014-03-05 22:16:15 +10:30
mremap.c Update copyright years 2014-03-05 22:16:15 +10:30
nacl.cc Update copyright years 2014-03-05 22:16:15 +10:30
nacl.h Update copyright years 2014-03-05 22:16:15 +10:30
NEWS Update copyright years 2014-03-05 22:16:15 +10:30
object.cc 2014-05-08 Martin Liška <mliska@suse.cz> 2014-05-08 15:23:53 -07:00
object.h Update copyright years 2014-03-05 22:16:15 +10:30
options.cc Update copyright years 2014-03-05 22:16:15 +10:30
options.h Update copyright years 2014-03-05 22:16:15 +10:30
output.cc Allow target to add custom dynamic table entries. 2014-03-10 13:34:53 -07:00
output.h Allow target to add custom dynamic table entries. 2014-03-10 13:34:53 -07:00
parameters.cc Update copyright years 2014-03-05 22:16:15 +10:30
parameters.h Update copyright years 2014-03-05 22:16:15 +10:30
plugin.cc Update copyright years 2014-03-05 22:16:15 +10:30
plugin.h Update copyright years 2014-03-05 22:16:15 +10:30
powerpc.cc Allow both signed and unsigned fields in PowerPC cmpli insn 2014-06-07 14:55:11 +09:30
pread.c Update copyright years 2014-03-05 22:16:15 +10:30
README Update copyright years 2014-03-05 22:16:15 +10:30
readsyms.cc Update copyright years 2014-03-05 22:16:15 +10:30
readsyms.h Update copyright years 2014-03-05 22:16:15 +10:30
reduced_debug_output.cc Update copyright years 2014-03-05 22:16:15 +10:30
reduced_debug_output.h Update copyright years 2014-03-05 22:16:15 +10:30
reloc-types.h Update copyright years 2014-03-05 22:16:15 +10:30
reloc.cc Update copyright years 2014-03-05 22:16:15 +10:30
reloc.h Update copyright years 2014-03-05 22:16:15 +10:30
resolve.cc Fix handling of __ehdr_start when it cannot be defined. 2014-05-02 16:33:43 -07:00
script-c.h Update copyright years 2014-03-05 22:16:15 +10:30
script-sections.cc Update copyright years 2014-03-05 22:16:15 +10:30
script-sections.h Update copyright years 2014-03-05 22:16:15 +10:30
script.cc Update copyright years 2014-03-05 22:16:15 +10:30
script.h Update copyright years 2014-03-05 22:16:15 +10:30
sparc.cc With -pie and x86, the linker complains if it sees a PC-relative relocation 2014-05-13 10:55:11 -07:00
stringpool.cc Update copyright years 2014-03-05 22:16:15 +10:30
stringpool.h Update copyright years 2014-03-05 22:16:15 +10:30
symtab.cc Fix handling of __ehdr_start when it cannot be defined. 2014-05-02 16:33:43 -07:00
symtab.h With -pie and x86, the linker complains if it sees a PC-relative relocation 2014-05-13 10:55:11 -07:00
system.h Update copyright years 2014-03-05 22:16:15 +10:30
target-reloc.h Fix handling of __ehdr_start when it cannot be defined. 2014-05-02 16:33:43 -07:00
target-select.cc Update copyright years 2014-03-05 22:16:15 +10:30
target-select.h Update copyright years 2014-03-05 22:16:15 +10:30
target.cc Update copyright years 2014-03-05 22:16:15 +10:30
target.h Allow target to decide whether to include a section. 2014-04-15 11:56:18 -07:00
tilegx.cc With -pie and x86, the linker complains if it sees a PC-relative relocation 2014-05-13 10:55:11 -07:00
timer.cc Update copyright years 2014-03-05 22:16:15 +10:30
timer.h Update copyright years 2014-03-05 22:16:15 +10:30
tls.h Update copyright years 2014-03-05 22:16:15 +10:30
TODO
token.h Update copyright years 2014-03-05 22:16:15 +10:30
version.cc Update copyright years 2014-03-05 22:16:15 +10:30
workqueue-internal.h Update copyright years 2014-03-05 22:16:15 +10:30
workqueue-threads.cc Update copyright years 2014-03-05 22:16:15 +10:30
workqueue.cc Update copyright years 2014-03-05 22:16:15 +10:30
workqueue.h Update copyright years 2014-03-05 22:16:15 +10:30
x86_64.cc Properly handle 64-bit GOT relocations 2014-05-27 12:20:18 -07:00
yyscript.y Update copyright years 2014-03-05 22:16:15 +10:30

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) 2012-2014 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.