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Alan Modra cd5b2babea Copying symbol type in ld script assignments
There is a call to update_definedness between code that evaluates an
assignment expression value and code that transfers symbol
attributes.  When script assignment expressions contain DEFINED, that
can mean the wrong symbol type is copied.  This patch tracks symbols
read during expression evaluation, rather than examining the
expression and re-evaluating conditionals.  Not only does this
simplify the code, it also means ld can now copy symbol types in more
complex expressions.

An unfortunate side effect of copying symbol type for more complex
expressions affects mmix, which uses
 PROVIDE (Main = DEFINED (Main) ? Main : (DEFINED (_start) ? _start : _start.));
in a default script.  So now _start or _start. symbol type may be
copied, losing the function type specially set up for Main.  This can
be avoided by making bfd_copy_link_hash_symbol_type do nothing for
mmix.

bfd/
	* elf64-mmix.c (bfd_elf64_bfd_copy_link_hash_symbol_type): Define.
ld/
	* ldexp.h (struct ldexp_control): Add "assign_src".
	* ldexp.c (fold_trinary): Save and restore assign_src around
	condition evaluation.
	(fold_name <NAME>): Set expld.assign_src.
	(try_copy_symbol_type): Delete.
	(exp_fold_tree_1): Set symbol type using expld.assign_src.
2017-11-28 22:56:59 +10:30
bfd Copying symbol type in ld script assignments 2017-11-28 22:56:59 +10:30
binutils Fix a seg-fault when displaying notes from a prorgam segment. Check for a NULL string section before attempting compute the name of a separate debug info file. 2017-11-27 11:05:39 +00:00
config picflag.m4 high bit set in comment 2017-01-05 00:02:57 +10:30
cpu Update the openrisc previous program counter (ppc) when running code in the cgen based simulator. 2017-03-20 15:33:51 +00:00
elfcpp oops - changelog entry omitted from previous delta 2017-09-21 09:07:11 +01:00
etc update-copyright.py for binutils 2017-01-05 00:03:07 +10:30
gas Compress loads/stores with implicit 0 offset. 2017-11-27 19:20:53 -08:00
gdb Remove REMOTE_OBS 2017-11-27 16:53:27 -07:00
gold Fix symbol values and relocation addends for relocatable links. 2017-11-27 17:32:55 -08:00
gprof Update the Hungarian translation in the gprof directory. 2017-10-05 14:10:27 +01:00
include Re-apply "elf: Properly compute offsets of note descriptor and next note" 2017-11-24 14:52:15 -08:00
intl Require ngettext in test of system gettext implementation 2017-11-07 15:56:44 +10:30
ld Copying symbol type in ld script assignments 2017-11-28 22:56:59 +10:30
libdecnumber Remove leading/trailing white spaces in ChangeLog 2015-07-24 04:16:47 -07:00
libiberty Sync libiberty/ & include/ with GCC 2017-09-15 17:40:33 +01:00
opcodes Update the simplified Chinese translation of the messages in the opcodes library. 2017-11-27 11:14:38 +00:00
readline Avoid MinGW compilation warning in readline/input.c 2017-05-19 11:05:59 +03:00
sim FT32: support for FT32B processor - part 2/2 2017-11-01 18:36:51 -07:00
texinfo
zlib Sync ZLIB with FSF GCC sources, bringing in version 1.2.11. 2017-02-20 12:52:22 +00:00
.cvsignore
.gitattributes
.gitignore Add archives and make stamps to the .gitignore file. 2016-09-27 15:10:42 +01:00
ChangeLog Add -l option to src-release script. 2017-09-15 16:18:20 +01:00
compile Update from upstream Automake 2014-11-16 13:43:48 +01:00
config-ml.in Sync toplevel files with GCC 2015-07-27 07:49:05 -07:00
config.guess Sync top level config files with master versions in the FSF config project. 2017-03-22 14:01:03 +00:00
config.rpath
config.sub * config.sub: Sync with master version in config project. 2017-04-13 02:34:19 -07:00
configure Sync top-level make and configure files with FSF GCC mainline versions. 2017-01-23 11:55:48 +00:00
configure.ac Sync top-level make and configure files with FSF GCC mainline versions. 2017-01-23 11:55:48 +00:00
COPYING
COPYING3
COPYING3.LIB
COPYING.LIB
COPYING.LIBGLOSS
COPYING.NEWLIB
depcomp Update from upstream Automake 2014-11-16 13:43:48 +01:00
djunpack.bat
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
lt~obsolete.m4
ltgcc.m4
ltmain.sh
ltoptions.m4
ltsugar.m4
ltversion.m4
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
makefile.vms
missing Update from upstream Automake 2014-11-16 13:43:48 +01:00
mkdep
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
README
README-maintainer-mode
setup.com 2009-09-01 Tristan Gingold <gingold@adacore.com> 2009-09-01 13:38:26 +00:00
src-release.sh Add -l option to src-release script. 2017-09-15 16:18:20 +01:00
symlink-tree
ylwrap Update from upstream Automake 2014-11-16 13:43:48 +01:00

		   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.