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Sriraman Tallam 3883a0743b Patch adds support to allow plugins to map selected subset of sections to unique
segments.


2012-08-24  Sriraman Tallam  <tmsriram@google.com>

	* gold.cc (queue_middle_tasks): Call layout again when unique
	segments for sections is desired.
	* layout.cc (Layout::Layout): Initialize new members.
	(Layout::get_output_section_flags): New function.
	(Layout::choose_output_section): Call get_output_section_flags.
	(Layout::layout): Make output section for mapping to a unique segment.
	(Layout::insert_section_segment_map): New function.
	(Layout::attach_allocated_section_to_segment): Make unique segment for
	output sections marked so.
	(Layout::segment_precedes): Check for unique segments when sorting.
	* layout.h (Layout::Unique_segment_info): New struct.
	(Layout::Section_segment_map): New typedef.
	(Layout::insert_section_segment_map): New function.
	(Layout::get_output_section_flags): New function.
	(Layout::is_unique_segment_for_sections_specified): New function.
	(Layout::set_unique_segment_for_sections_specified): New function.
	(Layout::unique_segment_for_sections_specified_): New member.
	(Layout::section_segment_map_): New member.
	* object.cc (Sized_relobj_file<size, big_endian>::do_layout):
	Rename is_gc_pass_one to is_pass_one.
	Rename is_gc_pass_two to is_pass_two.
	Rename is_gc_or_icf to is_two_pass.
	Check for which pass based on whether symbols data is present.
	Make it two pass when unique segments for sections is desired.
	* output.cc (Output_section::Output_section): Initialize new
	members.
	* output.h (Output_section::is_unique_segment): New function.
	(Output_section::set_is_unique_segment): New function.
	(Output_section::is_unique_segment_): New member.
	(Output_section::extra_segment_flags): New function.
	(Output_section::set_extra_segment_flags): New function.
	(Output_section::extra_segment_flags_): New member.
	(Output_section::segment_alignment): New function.
	(Output_section::set_segment_alignment): New function.
	(Output_section::segment_alignment_): New member.
	(Output_segment::Output_segment): Initialize is_unique_segment_.
	(Output_segment::is_unique_segment): New function.
	(Output_segment::set_is_unique_segment): New function.
	(Output_segment::is_unique_segment_): New member.
	* plugin.cc (allow_unique_segment_for_sections): New function.
	(unique_segment_for_sections): New function.
	(Plugin::load): Add new functions to transfer vector.
	* Makefile.am (plugin_final_layout.readelf.stdout): Add readelf output.
	* Makefile.in: Regenerate.
	* testsuite/plugin_final_layout.sh: Check if unique segment
	functionality works.
	* testsuite/plugin_section_order.c (onload): Check if new interfaces
	are available.
	(allow_unique_segment_for_sections): New global.
	(unique_segment_for_sections): New global.
	(claim_file_hook): Call allow_unique_segment_for_sections.
	(all_symbols_read_hook): Call unique_segment_for_sections.


2012-08-24  Sriraman Tallam  <tmsriram@google.com>

	* plugin-api.h (ld_plugin_allow_unique_segment_for_sections):
	New interface.
	(ld_plugin_unique_segment_for_sections): New interface.
	(LDPT_ALLOW_UNIQUE_SEGMENT_FOR_SECTIONS): New enum val.
	(LDPT_UNIQUE_SEGMENT_FOR_SECTIONS): New enum val.
	(tv_allow_unique_segment_for_sections): New member.
	(tv_unique_segment_for_sections): New member.
2012-08-24 18:35:35 +00:00
config Resync config/ from GCC. 2012-05-29 15:58:15 +00:00
etc PR other/46202: implement install-strip. 2010-11-20 19:37:57 +00:00
include Patch adds support to allow plugins to map selected subset of sections to unique 2012-08-24 18:35:35 +00:00
libgloss * arm/redboot-crt0.S (__change_mode): Replace mov with movs. 2012-05-02 08:09:45 +00:00
newlib * libc/stdio/flags.c (__sflags): Guard against using O_BINARY on systems which 2012-08-23 04:19:59 +00:00
texinfo
winsup * pinfo.cc (_pinfo::exists): Don't consider a process with no state to exist. 2012-08-23 14:45:52 +00:00
ChangeLog * configure.ac (CFLAGS_FOR_TARGET, CXXFLAGS_FOR_TARGET): Make sure 2012-06-28 11:50:52 +00:00
compile
config-ml.in * config-ml.in: Don't handle arc-*-elf*. 2011-03-22 20:01:13 +00:00
config.guess Sync from upstream: 2011-06-06 10:36:06 +00:00
config.rpath Remove freebsd1 from libtool.m4 macros and config.rpath. 2011-02-13 21:00:08 +00:00
config.sub Update config.sub to 2012-04-18 version. 2012-04-25 15:53:25 +00:00
configure * configure.ac (CFLAGS_FOR_TARGET, CXXFLAGS_FOR_TARGET): Make sure 2012-06-28 11:50:52 +00:00
configure.ac * configure.ac (CFLAGS_FOR_TARGET, CXXFLAGS_FOR_TARGET): Make sure 2012-06-28 11:50:52 +00:00
COPYING
COPYING3
COPYING3.LIB
COPYING.LIB
COPYING.LIBGLOSS 2012-03-09 Jeff Johnston <jjohnstn@redhat.com> 2012-03-09 20:31:34 +00:00
COPYING.NEWLIB 2012-03-09 Jeff Johnston <jjohnstn@redhat.com> 2012-03-09 20:31:34 +00:00
depcomp
djunpack.bat
install-sh
libtool.m4 Remove freebsd1 from libtool.m4 macros and config.rpath. 2011-02-13 21:00:08 +00:00
lt~obsolete.m4 Sync Libtool from GCC. 2010-01-09 21:11:32 +00:00
ltgcc.m4
ltmain.sh Backport from Libtool: Fix relink mode to use absolute path if hardcode_minus_L. 2011-01-13 18:52:53 +00:00
ltoptions.m4 Sync Libtool from GCC. 2010-01-09 21:11:32 +00:00
ltsugar.m4
ltversion.m4 Sync Libtool from GCC. 2010-01-09 21:11:32 +00:00
MAINTAINERS MAINTAINERS: clarify policy with config/ (and other top level files) 2012-05-12 03:10:17 +00:00
Makefile.def 2011-11-09 Roland McGrath <mcgrathr@google.com> 2011-11-09 18:57:30 +00:00
Makefile.in 2011-11-09 Roland McGrath <mcgrathr@google.com> 2011-11-09 18:57:30 +00:00
Makefile.tpl 2011-11-09 Roland McGrath <mcgrathr@google.com> 2011-11-09 18:57:30 +00:00
makefile.vms
missing
mkdep
mkinstalldirs
move-if-change Import move-if-change script from gnulib. 2011-02-12 15:47:02 +00:00
README
README-maintainer-mode Cleanups after the update to Autoconf 2.64, Automake 1.11. 2009-08-22 17:08:06 +00:00
setup.com 2009-09-01 Tristan Gingold <gingold@adacore.com> 2009-09-01 13:38:26 +00:00
src-release Include the <root>/cpu/ dir in GDB releases 2011-08-19 15:48:36 +00:00
symlink-tree
ylwrap

		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
the name as an argument, for instance ``./configure sun4''.  You can
use the script ``config.sub'' to test whether a name is recognized; if
it is, config.sub translates it to a triplet specifying CPU, vendor,
and OS.)

If you have more than one compiler on your system, it is often best to
explicitly set CC in the environment before running configure, and to
also set CC when running make.  For example (assuming sh/bash/ksh):

	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

Much of the code and documentation enclosed is copyright by
the Free Software Foundation, Inc.  See the file COPYING or
COPYING.LIB in the various directories, for a description of the
GNU General Public License terms under which you can copy the files.

REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.