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Alan Modra 8c5b4e5228 PowerPC64 dot-symbol compatibility bugfixes
Lots of fixes for the compatibility code that handles linking of
-mcall-aixdesc code (or that generated by 12 year old gcc) with
current ELFv1 ABI code.

1) A reference to a dot-symbol in an object file wasn't satisfied by a
   function descriptor in later object files.
2) The as-needed code had bit-rotted;  Shared libs now need a strong
   reference to be counted as needed.
3) --gc-sections involving dot-symbols was broken, needing
   func_desc_adjust to be run early and lots of other fixes.

bfd/
	* elf64-ppc.c (struct ppc_link_hash_entry): Delete "was_undefined".
	(struct ppc_link_hash_table): Delete "twiddled_syms".  Add
	"need_func_desc_adj".
	(lookup_fdh): Link direct fdh sym via oh field and set flags.
	(make_fdh): Make strong and weak undefined function descriptor
	symbols.
	(ppc64_elf_merge_symbol): New function.
	(elf_backend_merge_symbol): Define.
	(ppc64_elf_archive_symbol_lookup): Don't test undefweak for fake
	function descriptors.
	(add_symbol_adjust): Don't twiddle symbols to undefweak.
	Propagate more ref flags to function descriptor symbol.  Make
	some function descriptor symbols dynamic.
	(ppc64_elf_before_check_relocs): Only run add_symbol_adjust for
	ELFv1.  Set need_func_desc_adj.  Don't fix undefs list.
	(ppc64_elf_check_relocs): Set non_ir_ref for descriptors.
	Don't call lookup_fdh here.
	(ppc64_elf_gc_sections): New function.
	(bfd_elf64_bfd_gc_sections): Define.
	(ppc64_elf_gc_mark_hook): Mark descriptor.
	(func_desc_adjust): Don't make fake function descriptor syms strong
	here.  Exit earlier on non-dotsyms.  Take note of elf.dynamic
	flag when deciding whether a dynamic function descriptor might
	be needed.  Transfer elf.dynamic and set elf.needs_plt.  Move
	plt regardless of visibility.  Make descriptor dynamic if
	entry sym is dynamic, not for other cases.
	(ppc64_elf_func_desc_adjust): Don't run func_desc_adjust if
	already done.
	(ppc64_elf_edit_opd): Use oh field rather than lookup_fdh.
	(ppc64_elf_size_stubs): Likewise.
	(ppc_build_one_stub): Don't clear was_undefined.  Only set sym
	undefweak if stub symbol is defined.
	(undo_symbol_twiddle, ppc64_elf_restore_symbols): Delete.
	* elf64-ppc.h (ppc64_elf_restore_symbols): Don't declare.
ld/
	* emultempl/ppc64elf.em (gld${EMULATION_NAME}_finish): Don't call
	ppc64_elf_restore_symbols.
	* testsuite/ld-powerpc/dotsym1.d: New.
	* testsuite/ld-powerpc/dotsym2.d: New.
	* testsuite/ld-powerpc/dotsym3.d: New.
	* testsuite/ld-powerpc/dotsym4.d: New.
	* testsuite/ld-powerpc/dotsymref.s: New.
	* testsuite/ld-powerpc/nodotsym.s: New.
	* testsuite/ld-powerpc/powerpc.exp: Run new tests.
2016-12-03 21:00:01 +10:30
bfd PowerPC64 dot-symbol compatibility bugfixes 2016-12-03 21:00:01 +10:30
binutils Fix calculation of synthetic symbol sizes (ppc64) 2016-12-01 08:42:11 -06:00
config Sync top level files with gcc. 2016-02-10 10:54:29 +00:00
cpu Add fall through comment to source in cpu/ 2016-10-06 22:48:37 +10:30
elfcpp Add support for MIPS .rld_map section. 2016-06-20 12:16:26 -07:00
etc Fix compile time warning messages building with gcc v6.1.1 2016-06-13 10:49:26 +01:00
gas [ARC] Sync cpu names with the ones accepted by GCC. 2016-12-02 16:30:00 +01:00
gdb Introduce enum_flag type for ui_out flags 2016-12-02 17:12:37 -05:00
gold Fix problem where orphan section is treated as a KEEP section. 2016-12-01 19:54:05 -08:00
gprof Fix spelling in comments in C source files (gprof) 2016-11-27 15:04:01 +10:30
include [ARC] Add checking for LP_COUNT reg usage, improve error reporting. 2016-11-29 11:29:18 +01:00
intl Regen intl/configure 2015-08-31 12:53:36 +09:30
ld PowerPC64 dot-symbol compatibility bugfixes 2016-12-03 21:00:01 +10:30
libdecnumber Remove leading/trailing white spaces in ChangeLog 2015-07-24 04:16:47 -07:00
libiberty libiberty: Add Rust symbol demangling. 2016-11-18 11:06:18 +01:00
opcodes Fix abort in x86 disassembler. 2016-12-01 10:26:32 +00:00
readline Improve MinGW support in Readline 2016-09-17 11:50:37 +03:00
sim Fix typo in ChangeLog entry. 2016-12-01 09:07:55 -08:00
texinfo
zlib Regenerate configure 2016-05-09 17:24:30 +09:30
.cvsignore
.gitattributes
.gitignore Add archives and make stamps to the .gitignore file. 2016-09-27 15:10:42 +01:00
ChangeLog Add support for Fushia OS. 2016-12-02 10:44:29 +00:00
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 config.sub,config.guess with upstream. 2016-11-07 13:08:55 -08:00
config.rpath
config.sub Sync config.sub,config.guess with upstream. 2016-11-07 13:08:55 -08:00
configure Add support for Fushia OS. 2016-12-02 10:44:29 +00:00
configure.ac Add support for Fushia OS. 2016-12-02 10:44:29 +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 Sync Libtool from GCC. 2010-01-09 21:11:44 +00:00
ltgcc.m4
ltmain.sh
ltoptions.m4
ltsugar.m4
ltversion.m4
MAINTAINERS
Makefile.def Sync top-level Makefile.def with GCC 2016-01-12 08:34:40 -08:00
Makefile.in Add dependencies to configure rule 2016-05-28 22:36:04 +09:30
Makefile.tpl Add dependencies to configure rule 2016-05-28 22:36:04 +09:30
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
src-release.sh fix gdb version parsing in src-release.sh 2016-01-17 10:01:55 +04:00
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,
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then do:
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If you have more than one compiler on your system, it is often best to
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	CC=gcc ./configure
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	setenv CC gcc
	./configure
	make

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