Binutils with MCST patches
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Alan Modra 702d167134 powerpc common-page-size
max-page-size only matters for demand paged executables or shared
libraries, and the ideal size is the largest value used by your
operating system.  Values larger than necessary just waste file space
and memory.  common-page-size also affects file and memory size,
trading a possible small increase in file size for a decrease in
memory size when the operating system is using a common-page-size
page.  With a powerpc max-page-size of 64k and common-page-size of 4k
many executables will use no more memory pages when the system page
size is 4k than an executable linked with -z max-page-size=0x1000,
yet will still run on a system using 64k pages.  However, when running
on a system using 64k pages relro protection will not be completely
effective.

Due to the relro problem, powerpc binutils has been using a default
common-page-size of 64k since 2014-12-18 (git commit 04c6a44c7),
leading to complaints about increased file and memory sizes.  People
not using relro do have a valid reason to complain..

So this patch introduces an extra back-end value to use as the default
for common-page-size when generating relro executables, and enables
the support for powerpc.  Non relro executables will now be generated
with a default common-page-size of 4k.

bfd/
	* elf-bfd.h (struct elf_backend_data): Add relropagesize.
	* elfxx-target.h (ELF_RELROPAGESIZE): Provide default and
	sanity test.
	(elfNN_bed): Init relropagesize.
	* bfd.c (bfd_emul_get_commonpagesize): Add boolean param to
	select relropagesize.
	* elf32-ppc.c (ELF_COMMONPAGESIZE): Define as 0x1000.
	(ELF_RELROPAGESIZE): Define as ELF_MAXPAGESIZE.
	(ELF_MINPAGESIZE): Don't define.
	* elf64-ppc.c (ELF_COMMONPAGESIZE): Define as 0x1000.
	(ELF_RELROPAGESIZE): Define as ELF_MAXPAGESIZE.
	* bfd-in2.h: Regenerate.
ld/
	* ldmain.c (main): Move config.maxpagesize and
	config.commonpagesize initialization to..
	* ldemul.c (after_parse_default): ..here.
	* testsuite/ld-powerpc/ppc476-shared.d: Pass -z common-page-size.
	* testsuite/ld-powerpc/ppc476-shared2.d: Likewise.
2018-04-14 17:56:40 +09:30
bfd powerpc common-page-size 2018-04-14 17:56:40 +09:30
binutils Reinstate readelf decoding of i860 and i960 machine names 2018-04-14 10:50:16 +09:30
config config: Sync with GCC 2018-04-05 15:22:13 -07:00
cpu opcodes error messages 2018-03-03 11:34:26 +10:30
elfcpp PowerPC inline PLT call support 2018-04-09 17:25:20 +09:30
etc Update year range in copyright notice of binutils files 2018-01-03 17:49:56 +10:30
gas Stop the assembler from overwriting its output file. 2018-04-12 15:08:59 +01:00
gdb Show line numbers in output for "info var/func/type" 2018-04-13 19:26:05 +02:00
gold Regenerate some files 2018-04-10 00:20:19 +09:30
gprof Use dlsym to check if libdl is needed for plugin 2018-04-05 15:31:53 -07:00
include Remove i860, i960, bout and aout-adobe targets 2018-04-11 21:49:30 +09:30
intl Require ngettext in test of system gettext implementation 2017-11-07 15:56:44 +10:30
ld powerpc common-page-size 2018-04-14 17:56:40 +09:30
libdecnumber Remove leading/trailing white spaces in ChangeLog 2015-07-24 04:16:47 -07:00
libiberty Avoid compilation warning in libiberty/simple-object-xcoff.c 2018-01-27 18:25:06 +02:00
opcodes Enable Intel WAITPKG instructions. 2018-04-11 21:37:12 +02:00
readline Avoid MinGW compilation warning in readline/input.c 2017-05-19 11:05:59 +03:00
sim MAINTAINERS: Update my company e-mail address 2018-01-22 15:39:18 +00:00
texinfo * texinfo/texinfo.tex: Update to version 2009-03-28.05. 2009-04-21 12:36:46 +00:00
zlib Sync ZLIB with FSF GCC sources, bringing in version 1.2.11. 2017-02-20 12:52:22 +00:00
.cvsignore add autom4te.cache to .cvsignore 2007-02-13 15:25:58 +00:00
.gitattributes Add a .gitattributes file for use with git-merge-changelog 2014-07-25 18:07:23 -04:00
.gitignore Add archives and make stamps to the .gitignore file. 2016-09-27 15:10:42 +01:00
COPYING 2005-07-14 Kelley Cook <kcook@gcc.gnu.org> 2005-07-14 01:24:56 +00:00
COPYING.LIB 2005-07-16 Kelley Cook <kcook@gcc.gnu.org> 2005-07-16 02:41:34 +00:00
COPYING.LIBGLOSS Update the address of the FSF in the copyright notice of files which were using the old address. 2017-12-14 12:48:55 +00:00
COPYING.NEWLIB 2013-10-01 Jeff Johnston <jjohnstn@redhat.com> 2013-10-01 18:14:04 +00:00
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
ChangeLog WebAssembly: Disable subdirectory configuration for unsupported LD 2018-02-13 12:56:29 +00:00
MAINTAINERS Update description of ownership of files in include/ 2014-11-04 16:14:14 -08:00
Makefile.def Sync top-level make and configure files with FSF GCC mainline versions. 2017-01-23 11:55:48 +00:00
Makefile.in Sync top-level make and configure files with FSF GCC mainline versions. 2017-01-23 11:55:48 +00:00
Makefile.tpl Sync top-level make and configure files with FSF GCC mainline versions. 2017-01-23 11:55:48 +00:00
README 19990502 sourceware import 1999-05-03 07:29:11 +00:00
README-maintainer-mode Cleanups after the update to Autoconf 2.64, Automake 1.11. 2009-08-22 17:08:11 +00:00
compile Update from upstream Automake 2014-11-16 13:43:48 +01:00
config-ml.in Update top level configure files by synchronizing them with gcc. 2018-01-10 15:29:21 +00:00
config.guess Update top level configure files by synchronizing them with gcc. 2018-01-10 15:29:21 +00:00
config.rpath Remove freebsd1 from libtool.m4 macros and config.rpath. 2011-02-13 21:00:14 +00:00
config.sub Update top level configure files by synchronizing them with gcc. 2018-01-10 15:29:21 +00:00
configure WebAssembly: Disable subdirectory configuration for unsupported LD 2018-02-13 12:56:29 +00:00
configure.ac WebAssembly: Disable subdirectory configuration for unsupported LD 2018-02-13 12:56:29 +00:00
depcomp Update from upstream Automake 2014-11-16 13:43:48 +01:00
djunpack.bat * djunpack.bat: Use ".." quoting in Sed command, for the sake of 2009-03-27 13:37:09 +00:00
install-sh Update from upstream Automake 2014-11-16 13:43:48 +01:00
libtool.m4 Sync top-level btool.m4 with GCC 2016-01-12 08:44:52 -08:00
ltgcc.m4 * libtool.m4: Update to libtool 2.2.6. 2008-09-29 15:28:14 +00:00
ltmain.sh PR target/59788 2014-02-06 11:01:57 +01:00
ltoptions.m4 Sync Libtool from GCC. 2010-01-09 21:11:44 +00:00
ltsugar.m4 * libtool.m4: Update to libtool 2.2.6. 2008-09-29 15:28:14 +00:00
ltversion.m4 Sync Libtool from GCC. 2010-01-09 21:11:44 +00:00
lt~obsolete.m4 Sync Libtool from GCC. 2010-01-09 21:11:44 +00:00
makefile.vms 19990502 sourceware import 1999-05-03 07:29:11 +00:00
missing Update from upstream Automake 2014-11-16 13:43:48 +01:00
mkdep * mkdep: New file. 1999-08-08 17:46:02 +00:00
mkinstalldirs Update from upstream Automake 2014-11-16 13:43:48 +01:00
move-if-change Update `move-if-change' from gnulib 2014-11-16 17:04:02 +01:00
setup.com 2009-09-01 Tristan Gingold <gingold@adacore.com> 2009-09-01 13:38:26 +00:00
src-release.sh Improve junk file removal in source tarball creation script. 2018-01-30 17:48:24 +00:00
symlink-tree 2005-07-14 Kelley Cook <kcook@gcc.gnu.org> 2005-07-14 01:24:56 +00:00
ylwrap Update from upstream Automake 2014-11-16 13:43:48 +01:00

README

		   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.