Alan Modra e1c6cf618c PR25384, PowerPC64 ELFv1 copy relocs against function symbols
Function symbols of course don't normally want .dynbss copies but
with some old versions of gcc they are needed to copy the function
descriptor.  This patch restricts the cases where they are useful to
compilers using dot-symbols, and enables the warning regardless of
whether a PLT entry is emitted in the executable.  PLTs in shared
libraries are affected by a .dynbss copy in the executable.

bfd/
	PR 25384
	* elf64-ppc.c (ELIMINATE_COPY_RELOCS): Update comment.
	(ppc64_elf_adjust_dynamic_symbol): Don't allow .dynbss copies
	of function symbols unless dot symbols are present.  Do warn
	whenever one is created, regardles of whether a PLT entry is
	also emitted for the function symbol.
ld/
	* testsuite/ld-powerpc/ambiguousv1b.d: Adjust expected output.
	* testsuite/ld-powerpc/funref.s: Align func_tab.
	* testsuite/ld-powerpc/funref2.s: Likewise.
	* testsuite/ld-powerpc/funv1.s: Add dot symbols.
2020-01-15 12:29:21 +10:30
2018-10-31 17:16:41 +00:00
2019-12-26 06:54:58 +01:00
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		   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.
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