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Cary Coutant 1d1c001cb4 Add plugin functionality for link-time optimization (LTO).
include/:
	* plugin-api.h: New file.

gold/:
	* configure.ac (plugins): Add --enable-plugins option.
	* configure: Regenerate.
	* config.in: Regenerate.
	* Makefile.am (LIBDL): New variable.
	(CCFILES): Add plugin.cc.
	(HFILES): Add plugin.h.
	(ldadd_var): Add LIBDL.
	* Makefile.in: Regenerate.

	* archive.cc: Include "plugin.h".
	(Archive::setup): Don't preread archive symbols when using a plugin.
	(Archive::get_file_and_offset): Add memsize parameter.  Change callers.
	(Archive::get_elf_object_for_member): Call plugin hooks for claiming
	files.
	(Archive::include_member): Add symbols from plugin objects.
	* archive.h (Archive::get_file_and_offset): Add memsize parameter.
	* descriptors.cc (Descriptors::open): Check for file descriptors
	abandoned by plugins.
	(Descriptors::claim_for_plugin): New function.
	* descriptors.h (Descriptors::claim_for_plugin): New function.
	(Open_descriptor::is_claimed): New field.
	(claim_descriptor_for_plugin): New function.
	* fileread.cc (File_read::claim_for_plugin): New function.
	* fileread.h (File_read::claim_for_plugin): New function.
	(File_read::descriptor): New function.
	* gold.cc: Include "plugin.h".
	(queue_initial_tasks): Add task to call plugin hooks for generating
	new object files.
	* main.cc: Include "plugin.h".
	(main): Load plugin libraries.
	* object.h (Pluginobj): Declare.
	(Object::pluginobj): New function.
	(Object::do_pluginobj): New function.
	(Object::set_target): New function.
	* options.cc: Include "plugin.h".
	(General_options::parse_plugin): New function.
	(General_options::General_options): Initialize plugins_ field.
	(General_options::add_plugin): New function.
	* options.h (Plugin_manager): Declare.
	(General_options): Add --plugin option.
	(General_options::has_plugins): New function.
	(General_options::plugins): New function.
	(General_options::add_plugin): New function.
	(General_options::plugins_): New field.
	* plugin.cc: New file.
	* plugin.h: New file.
	* readsyms.cc: Include "plugin.h".
	(Read_symbols::do_read_symbols): Check for archive before checking
	for ELF file.  Call plugin hooks to claim files.
	* resolve.cc (Symbol_table::resolve): Record when symbol is referenced
	from a real object file; force override when processing replacement
	files.
	* symtab.cc (Symbol::init_fields): Initialize in_real_elf_ field.
	(Symbol::init_base_object): Likewise.
	(Symbol::init_base_output_data): Likewise.
	(Symbol::init_base_output_segment): Likewise.
	(Symbol::init_base_constant): Likewise.
	(Symbol::init_base_undefined): Likewise.
	(Symbol::output_section): Assert that object is not a plugin.
	(Symbol_table::add_from_pluginobj): New function.
	(Symbol_table::sized_finalize_symbol): Treat symbols from plugins as
	undefined.
	(Symbol_table::sized_write_globals): Likewise.
	(Symbol_table::add_from_pluginobj): Instantiate template.
	* symtab.h (Sized_pluginobj): Declare.
	(Symbol::in_real_elf): New function.
	(Symbol::set_in_real_elf): New function.
	(Symbol::in_real_elf_): New field.
	(Symbol_table::add_from_pluginobj): New function.

	* testsuite/Makefile.am (AM_CFLAGS): New variable.
	(LIBDL): New variable.
	(LDADD): Add LIBDL.
	(check_PROGRAMS): Add plugin_test_1 and plugin_test_2.
	(check_SCRIPTS): Add plugin_test_1.sh and plugin_test_2.sh.
	(check_DATA): Add plugin_test_1.err and plugin_test_2.err.
	(MOSTLYCLEANFILES): Likewise.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/plugin_test.c: New file.
	* testsuite/plugin_test_1.sh: New file.
	* testsuite/plugin_test_2.sh: New file.
2008-09-19 22:54:57 +00:00
config Merge from gcc. 2008-08-25 17:07:33 +00:00
etc * standards.texi: Import 22 July 2007 version. 2007-08-13 09:45:22 +00:00
include Add plugin functionality for link-time optimization (LTO). 2008-09-19 22:54:57 +00:00
libgloss 2008-09-10 Ken Werner <ken.werner@de.ibm.com> 2008-09-11 00:30:32 +00:00
newlib 2008-09-19 Eric Blake <ebb9@byu.net> 2008-09-19 16:11:35 +00:00
texinfo
winsup Fix MinGW-Bug [2119504]. 2008-09-19 22:41:01 +00:00
ChangeLog 2008-08-31 Aaron W. LaFramboise <aaronavay62@aaronwl.com> 2008-09-04 02:18:16 +00:00
compile
config-ml.in 2007-11-28 Ralf Wildenhues <Ralf.Wildenhues@gmx.de> 2007-11-29 15:36:39 +00:00
config.guess * config.sub, config.guess: Update from upstream sources. 2008-04-14 09:28:35 +00:00
config.rpath * config.rpath: Add AIX 6 support. 2008-03-13 19:27:44 +00:00
config.sub * config.sub, config.guess: Update from upstream sources. 2008-04-14 09:28:35 +00:00
configure 2008-08-31 Aaron W. LaFramboise <aaronavay62@aaronwl.com> 2008-09-04 02:18:16 +00:00
configure.ac 2008-08-31 Aaron W. LaFramboise <aaronavay62@aaronwl.com> 2008-09-04 02:18:16 +00:00
COPYING
COPYING3 * COPYING3: New file. Contains version 3 of the GNU General Public License. 2007-07-17 13:50:23 +00:00
COPYING3.LIB * COPYING3: New file. Contains version 3 of the GNU General Public License. 2007-07-17 13:50:23 +00:00
COPYING.LIB
COPYING.LIBGLOSS 2007-12-19 Jeff Johnston <jjohnstn@redhat.com> 2007-12-19 20:47:45 +00:00
COPYING.NEWLIB 2007-12-19 Jeff Johnston <jjohnstn@redhat.com> 2007-12-19 19:12:23 +00:00
depcomp
djunpack.bat
install-sh
libtool.m4 2008-03-16 Ralf Wildenhues <Ralf.Wildenhues@gmx.de> 2008-03-16 06:49:28 +00:00
lt~obsolete.m4 2007-07-05 H.J. Lu <hongjiu.lu@intel.com> 2007-07-05 17:57:04 +00:00
ltgcc.m4 2007-05-31 Paolo Bonzini <bonzini@gnu.org> 2007-05-31 06:40:36 +00:00
ltmain.sh 2007-05-25 Andreas Tobler <a.tobler@schweiz.org> 2007-05-25 19:56:24 +00:00
ltoptions.m4 * ltmain.sh: Update from GCC. 2007-05-24 17:33:42 +00:00
ltsugar.m4 2008-03-16 Ralf Wildenhues <Ralf.Wildenhues@gmx.de> 2008-03-16 06:49:28 +00:00
ltversion.m4 * ltmain.sh: Update from GCC. 2007-05-24 17:33:42 +00:00
MAINTAINERS * MAINTAINERS: Replace reference to configure.in with reference to configure.ac. 2008-04-18 08:55:06 +00:00
Makefile.def 2008-07-30 Paolo Bonzini <bonzini@gnu.org> 2008-07-30 15:03:57 +00:00
Makefile.in 2008-08-31 Aaron W. LaFramboise <aaronavay62@aaronwl.com> 2008-09-04 02:18:16 +00:00
Makefile.tpl 2008-08-31 Aaron W. LaFramboise <aaronavay62@aaronwl.com> 2008-09-04 02:18:16 +00:00
makefile.vms
missing
mkdep
mkinstalldirs
move-if-change
README
README-maintainer-mode
setup.com
src-release * src-release (BINUTILS_SUPPORT_DIRS): Remove mkdep and depcomp. 2008-06-18 23:20:43 +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

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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
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on where and how to report problems.