gdb/17394: cannot put breakpoint only in selected ASM file.

This patch fixes a problem when trying to insert a breakpoint on
a specific symbol defined in a specific file, eg:

    break foo.c:func

This currently works for files in C/C++/Ada, etc, but doesn't always
work for Asm files. Analysis of the problem showed that this related
to a limitation in gas, which does not generate debug info for functions/
symbols.  Thus, we have a symtab for the file ("info sources" shows
the file), but it contains no symbols.

When find_linespec_symbols is called in linespec_parse_basic, it calls
find_function_symbols, which uses add_matching_symbols_to_info to
collect all matching symbols.

That function does [pardon any mangled formatting]:

  for (ix = 0; VEC_iterate (symtab_ptr, info->file_symtabs, ix, elt); ++ix)
    {
      if (elt == NULL)
        {
          iterate_over_all_matching_symtabs (info->state, name, VAR_DOMAIN,
                                             collect_symbols, info,
                                             pspace, 1);
          search_minsyms_for_name (info, name, pspace);
        }
      else if (pspace == NULL || pspace == SYMTAB_PSPACE (elt))
        {
          /* Program spaces that are executing startup should have
             been filtered out earlier.  */
          gdb_assert (!SYMTAB_PSPACE (elt)->executing_startup);
          set_current_program_space (SYMTAB_PSPACE (elt));
          iterate_over_file_blocks (elt, name, VAR_DOMAIN,
                                    collect_symbols, info);
        }
    }

This iterates over the symtabs. In the failing use case, ELT is
non-NULL (points to the symtab for the .s file), so it calls
iterate_over_file_blocks. Herein is where the problem exists: it is
assumed that if NAME exists, it must exist in the given symtab -- a
reasonable assumption for "normal" (non-asm) cases. It never searches
minimal symbols (or in the global default symtab).

This patch fixes the problem by doing so. It is important to note that
iterating over minsyms is fairly expensive, so this patch only adds
that extra search if the language is language_asm and
iterate_over_file_blocks returns no symbols.

gdb/ChangeLog:
2014-12-20  Keith Seitz  <keiths@redhat.com>
            Mihail-Marian Nistor  <mihail.nistor@freescale.com>

        PR gdb/17394
        * linespec.c (struct collect_minsyms): Add new member `symtab'.
        (add_minsym): Handle cases where info.symtab is non-NULL.
        (search_minsyms_for_name): Add new parameter `symtab'.
        Handle limiting searches to a specific symtab.
        (add_matching_symtabs_to_info): Search through minimal symbols
        for language_asm files for which no new symbols are found.

gdb/testsuite/ChangeLog:
2014-12-20  Mihail-Marian Nistor  <mihail.nistor@freescale.com>

        PR gdb/17394
        * gdb.linespec/break-asm-file.c: New file.
        * gdb.linespec/break-asm-file.exp: New file.
        * gdb.linespec/break-asm-file0.s: New file.
        * gdb.linespec/break-asm-file1.s: New file.
Automatic date update in version.in
Automatic date update in version.in
Merge remote-tracking branch 'origin/master' into hjl/linux/master
cp-namespace.c: Whitespace cleanup.

gdb/ChangeLog:

	* cp-namespace.c: Whitespace cleanup.
cp-namespace.c (cp_lookup_symbol_in_namespace): Simplify.

gdb/ChangeLog:

	* cp-namespace.c (cp_lookup_symbol_in_namespace): Simplify.
cp-namespace.c (cp_lookup_nested_symbol_1): New function.

gdb/ChangeLog:

	* cp-namespace.c (cp_lookup_nested_symbol_1): New function.
	(cp_basic_lookup_symbol): Renamed from lookup_symbol_file.  Delete
	arg "search".  All callers updated.
	(cp_lookup_bare_symbol): New function.
	(cp_search_static_and_baseclasses): New function.
	(cp_lookup_symbol_in_namespace): Rewrite, move more logic here.
	(find_symbol_in_baseclass): Simplify, call cp_lookup_nested_symbol_1.
	(cp_lookup_nested_symbol): Ditto.
cp-namespace.c (cp_lookup_symbol_via_imports): New arg "search_scope_first".

gdb/ChangeLog:

	* cp-namespace.c (cp_lookup_symbol_via_imports): New arg
	"search_scope_first".  All callers updated.
cp-namespace.c (cp_lookup_symbol_via_all_imports): New function.

gdb/ChangeLog:

	* cp-namespace.c (cp_lookup_symbol_via_all_imports): New function.
	(cp_lookup_symbol_namespace): Call it.
	(cp_lookup_symbol_nonlocal): Ditto.
gold/
	* powerpc.cc (Target_powerpc::relocate): Fix overflow check.
More fixes for memory access violations exposed by fuzzed binaries.

	PR binutils/17512
	* archive.c (do_slurp_bsd_armap): Return if the parsed_size is
	zero.
	(bfd_slurp_armap): Zero terminate the name.
	(bfd_generic_stat_arch_elt): If there is no header, fail.
	* elf32-arc.c (arc_info_to_howto_rel): Replace BFD_ASSERT with
	error message.
	* elf32-avr.c (avr_info_to_howto_rela): Likewise.
	* elf32-cr16c.c (elf_cr16c_info_to_howto_rel): Likewise.
	* elf32-cris.c (cris_info_to_howto_rela): Likewise.
	* elf32-d10v.c (d10v_info_to_howto_rel): Likewise.
	* elf32-d30v.c (d30v_info_to_howto_rel): Likewise.
	* elf32-dlx.c (dlx_rtype_to_howto): Likewise.
	* elf32-epiphany.c (epiphany_info_to_howto_rela): Likewise.
	* elf32-fr30.c (fr30_info_to_howto_rela): Likewise.
	* elf32-frv.c (frv_info_to_howto_rela): Likewise.
	* elf32-i960.c (elf32_i960_info_to_howto_rel): Likewise.
	* elf32-ip2k.c (ip2k_info_to_howto_rela): Likewise.
	* elf32-iq2000.c (iq2000_info_to_howto_rela): Likewise.
	* elf32-lm32.c (lm32_info_to_howto_rela): Likewise.
	* elf32-m32c.c (m32c_info_to_howto_rela): Likewise.
	* elf32-m32r.c (m32r_info_to_howto_rel): Likewise.
	* elf32-m68hc11.c (m68hc11_info_to_howto_rel): Likewise.
	* elf32-m68hc12.c (m68hc11_info_to_howto_rel): Likewise.
	* elf32-mep.c (mep_info_to_howto_rela): Likewise.
	* elf32-metag.c (metag_info_to_howto_rela): Likewise.
	* elf32-moxie.c (moxie_info_to_howto_rela): Likewise.
	* elf32-msp430.c (msp430_info_to_howto_rela): Likewise.
	* elf32-mt.c (mt_info_to_howto_rela): Likewise.
	* elf32-nds32.c (nds32_info_to_howto_rel): Likewise.
	* elf32-or1k.c (or1k_info_to_howto_rela): Likewise.
	* elf32-rl78.c (rl78_info_to_howto_rela): Likewise.
	* elf32-rx.c (rx_info_to_howto_rela): Likewise.
	* elf32-v850.c (v850_elf_info_to_howto_rel): Likewise.
	* elf32-visium.c (visium_info_to_howto_rela): Likewise.
	* elf32-xgate.c (xgate_info_to_howto_rel): Likewise.
	* elf32-xtensa.c (elf_xtensa_info_to_howto_rela): Likewise.
	* elf64-mmix.c (mmix_info_to_howto_rela): Likewise.
	* elf64-x86-64.c (elf_x86_64_reloc_type_lookup): Likewise.
	* elfnn-aarch64.c (elfNN_aarch64_bfd_reloc_from_type): Likewise.
	* elf64-sparc.c (elf64_sparc_slurp_one_reloc_table): Add range
	checking of reloc symbol index.
	* mach-o.c (bfd_mach_o_canonicalize_one_reloc): If no symbols have
	been provided then set the reloc's symbol to undefined.
	* reloc.c (bfd_generic_get_relocated_section_contents): Add range
	checking of the reloc to be applied.
	* versados.c (process_otr): Add more range checks.
	(versados_canonicalize_reloc): If the section is unknown, set the
	symbol to undefined.
	* vms-alpha.c (_bfd_vms_slurp_eisd): Add range checks.
	(alpha_vms_object_p): Likewise.
More fixes for invalid memory accesses exposed by fuzzed binaries.

	PR binutils/17531
	* dwarf.c (decode_location_expression): Check for an out of range
	value for a DW_OP_GNU_entry_value expression.
	(display_debug_lines_raw): Check for a partial
	.debug_line. section being encountered without a prior, full
	.debug.line section.
	(display_debug_lines_decoded): Likewise.  Also check for
	li_line_range being zero.
	(display_debug_pubnames_worker): Check for an invalid pn_length
	field.
	(read_cie): Add range checks.
	* elfcomm.c (setup_archive): Check for a negative longnames_size.
Cast size to long to warn

	* dwarf.c (read_cie): Cast size to long to warn.
Automatic date update in version.in
Merge remote-tracking branch 'origin/master' into hjl/linux/master
Update binutils-pr14675.patch
Updated translations for the gas and gprof tools.

	* po/es.po: Updated Esperanto translation.
	* po/fr.po: Updated French translation.
	* po/uk.po: Updated Ukrainian translation.
Move support code for linker script DEFINED to ldexp.c

This moves support code for DEFINED to ldexp.c where it is used,
losing the lang_ prefix on identifiers.  Two new functions are needed
to initialize and clean up to hash table, but other than that there
are no functional changes here.

	* ldexp.c (struct definedness_hash_entry, definedness_table)
	(definedness_newfunc, symbol_defined, update_definedness): Move
	and rename from..
	* ldlang.h (struct lang_definedness_hash_entry): ..here,..
	* ldlang.c (lang_definedness_table, lang_definedness_newfunc)
	(lang_symbol_defined, lang_update_definedness): ..and here.
	* ldexp.c (ldexp_init, ldexp_finish): New functions, extracted from..
	* ldlang.c (lang_init, lang_finish): ..here.
	* ldexp.h (ldexp_init, ldexp_finish): Declare.
	* ldlang.h (lang_symbol_defined, lang_update_definedness): Delete.
	* ldmain.c (main): Call ldexp_init and ldexp_finish.
Correct logic for "defined by object"

The old code missed testing bfd_link_hash_undefweak, and wrongly
excluded bfd_link_hash_common symbols.  It is also clearer to invert
the set of enum bfd_link_hash_type values tested.
bfd_link_hash_indirect and bfd_link_hash_warning will never appear
here.

	* ldexp.c (update_definedness): Correct logic setting by_object.
Don't PROVIDE over top of common symbols

This:
  int end[100000];
  int main(void) { end[99999] = 0; return 0; }
should not segfault.

ld/
	* ldexp.c (exp_fold_tree_1 <etree_provide>): Leave bfd_link_hash_common
	symbols alone.
ld/testsuite/
	* ld-elf/endsym.s, *ld-elf/endsym.d: New test.