daily update

Update copyright years.  Update language files.

Don't crash if we change the address of the .eh_frame section after we
find its size.

    * config.rpath: Add AIX 6 support.

merge from gcc

2008-03-13  Paolo Bonzini  <bonzini@gnu.org>

* Makefile.def (stageprofile).  Remove -fprofile-generate
from stage_libcflags.
* Makefile.in: Regenerate.

PR gas/5895
   * read.c (s_mexit): Warn if attempting to exit a macro when not
   inside a macro definition.

   * gas/macros/exit.s: New test case.
   * gas/macros/macros.exp: Run the new test, expect it to produce an
   error result.

include/elf/
* internal.h (Elf_Internal_Shdr): Change sh_link and sh_info from
unsigned long to unsigned int.  Change sh_addralign to bfd_vma.
Order struct as for external version.
bfd/
* elf.c (_bfd_elf_make_section_from_shdr): Remove unnecessary cast.
(_bfd_elf_assign_file_position_for_section): Simplify align.
(_bfd_elf_init_reloc_shdr): Ensure shift expression wide enough
for sh_addralign.
(elf_fake_sections, swap_out_syms): Likewise.
* elflink.c (bfd_elf_final_link): Likewise.
binutils/
* readelf.c: Use %u throughout when printing sh_link or sh_info,
%lu when printing sh_addralign.
(process_version_sections): Use identical formats when printing
all offset and sh_link fields.

bfd/
* Makefile.am: Run "make dep-am".
* Makefile.in: Regenerate.
* po/SRC-POTFILES.in: Regenerate.
bfd/doc/
* Makefile.in: Regenerate.
binutils/
* Makefile.am: Run "make dep-am".
* Makefile.in: Regenerate.
* doc/Makefile.in: Regenerate.
* configure: Regenerate.
gas/
* Makefile.am: Run "make dep-am".
* Makefile.in: Regenerate.
* configure: Regenerate.
gprof/
* configure: Regenerate.
ld/
* Makefile.am: Run "make dep-am".
* Makefile.in: Regenerate.
* configure: Regenerate.
opcodes/
* Makefile.am: Run "make dep-am".
* Makefile.in: Regenerate.
* configure: Regenerate.

From Craig Silverstein: Implement --debug=files to track file opens,
and implement --verbose as a synonym.

* config.sub, config.guess: Update from upstream sources.

daily update

From Jie Zhang <jie.zhang@analog.com>
* elf32-bfin.c (struct bfinfdpic_relocs_info): Make got17m4,
gothilo, fd, fdgot17m4, fdgothilo, fdgoff17m4, fdgoffhilo,
gotoff, call and sym not bitfields.
(bfinfdpic_gc_sweep_hook): New function; update the relocation
information for the relocations of the section being removed.
(bfinfdpic_check_relocs): Accumulate the number of relocations
which set got17m4, gothilo, fd, fdgot17m4, fdgothilo, fdgoff17m4,
fdgoffhilo, gotoff, call and sym fields.
(elf_backend_gc_sweep_hook): Redefine for FD-PIC.

include/elf/
PR 5900
* common.h (SHN_BAD): Delete.
(SHN_LORESERVE .. SHN_HIRESERVE): Move to..
* external.h: ..here.
* internal.h (SHN_LORESERVE, SHN_HIRESERVE): Define.
(SHN_LOPROC, SHN_HIPROC, SHN_LOOS, SHN_HIOS): Define.
(SHN_ABS, SHN_COMMON, SHN_XINDEX, SHN_BAD): Define.
bfd/
PR 5900
* elf-bfd.h: Include elf/internal.h after elf/external.h.
* elfcode.h (elf_swap_symbol_in): Map reserved shndx range.
(elf_swap_symbol_out): Adjust SHN_XINDEX test.
(elf_swap_ehdr_out): Mask SHN_LORESERVE and SHN_XINDEX to values
seen in external structs.
(valid_section_index_p): Delete.
(elf_object_p): Don't increment section numbers over reserved range.
Simplify test for valid sh_link, sh_info and e_shstrndx fields.
(elf_write_shdrs_and_ehdr): Mask SHN_LORESERVE and SHN_XINDEX to values
seen in external structs.  Don't increment section numbers over
reserved range.
* elf.c (bfd_elf_sym_name): Remove redundant tests on st_shndx.
(bfd_section_from_shdr): Likewise.
(group_signature): Range check before accessing elf_elfsections.
(_bfd_elf_setup_sections): Likewise.
(bfd_section_from_shdr): Likewise.
(bfd_section_from_shdr): Don't increment section number over
reserved sections.
(assign_file_positions_for_non_load_sections): Likewise.
(assign_file_positions_except_relocs): Likewise.
(_bfd_elf_write_object_contents): Likewise.
(assign_section_numbers): Likewise.  Adjust for changed SHN_*.
(prep_headers): Delete unused variable.
* elflink.c (bfd_elf_link_record_local_dynamic_symbol): Adjust
for changed SHN_* values.
(check_dynsym, elf_link_input_bfd): Likewise.
(bfd_elf_final_link): Likewise.  Don't skip over reserved section
range.
(elf_fixup_link_order): Check that sh_link field is valid.
* elf-hppa.h (elf_hppa_add_symbol_hook): Make "index" unsigned.
* elf32-arm.c (elf32_arm_gc_mark_extra_sections): Range check before
accesssing elf_elfsections.
* elf32-avr.c (elf32_avr_size_stubs): Likewise.
* elf32-hppa.c (elf32_hppa_size_stubs): Likewise.
* elf32-m68hc1x.c (elf32_m68hc11_size_stubs): Likewise.
* elf64-hppa.c (elf64_hppa_check_relocs): Adjust for changed
SHN_* defines.  Test for SHN_BAD return from
_bfd_elf_section_from_bfd_section
binutils/
PR 5900
* readelf.c (SECTION_HEADER_INDEX, SECTION_HEADER_NUM): Delete.
Remove use throughout file.
(SECTION_HEADER): Likewise.
(dump_relocations): Don't adjust st_shndx for reserved range.
(process_file_header): Mask SHN_XINDEX to values seen in external
elf structs.  Simplify valid section index tests.
(get_32bit_elf_symbols, get_64bit_elf_symbols): Mask SHN_XINDEX.
Map reserved st_shndx to internal form.
(process_section_groups): Test that group symbol st_shndx is in
range, not just non-zero.  Delete reserved range check.
(get_symbol_index_type): Mask "type" to 16 bits when printing PRC,
OS or RSV.
gdb/
PR 5900
* elfread.c (elf_symtab_read): Make shndx an unsigned int.
* mipsread.c: Include elf/internal.h.
(read_alphacoff_dynamic_symtab): Map external reserved sym_shndx
to internal range.
ld/testsuite/
PR 5900
* ld-elf/sec64k.exp: Update.

Combine read-only .eh_frame sections with read-write .eh_frame
sections.

* elf-bfd.h (_bfd_elf_section_from_bfd_section): Update prototype.
* elf.c (_bfd_elf_section_from_bfd_section): Return unsigned int,
SHN_BAD on error.
(_bfd_elf_print_private_bfd_data): Test for SHN_BAD result from
_bfd_elf_section_from_bfd_section, not -1.
(swap_out_syms): Likewise.
* elflink.c (elf_link_add_object_symbols): Likewise.
(bfd_elf_get_bfd_needed_list): Likewise.
(bfd_elf_match_symbols_in_sections): Likewise.
(elf_link_add_object_symbols): Don't bother testing for symbols
using normal sections before calling bfd_section_from_elf_index.
(elf_link_input_bfd, bfd_elf_final_link): Likewise.
(bfd_elf_reloc_symbol_deleted_p): Likewise.
* elfcode.h (elf_slurp_symbol_table): Likewise.
* elf32-spu.c (get_sym_h): Likewise.
* elf32-xtensa.c (get_elf_r_symndx_section): Likewise.
* elf64-ppc.c (opd_entry_value, get_sym_h, ppc64_elf_edit_toc): Ditto.
* elf64-sh64.c (sh_elf64_get_relocated_section_contents): Likewise.

* elf/cr16c.h (SHN_CR16C_FCOMMON): Define using SHN_LORESERVE.
(SHN_CR16C_NCOMMON): Likewise.
* elf/hppa.h (SHN_PARISC_ANSI_COMMON): Likewise.
(SHN_PARISC_HUGE_COMMON): Likewise.
* elf/ia64.h (SHN_IA_64_ANSI_COMMON): Likewise.
(SHN_IA_64_VMS_SYMVEC): Define using SHN_LOOS.
* elf/m32r.h (SHN_M32R_SCOMMON): Define using SHN_LORESERVE.
* elf/mips.h (SHN_MIPS_ACOMMON, SHN_MIPS_TEXT): Likewise.
(SHN_MIPS_DATA, SHN_MIPS_SCOMMON, SHN_MIPS_SUNDEFINED): Likewise.
* elf/score.h (SHN_SCORE_TEXT, SHN_SCORE_DATA): Likewise.
(SHN_SCORE_SCOMMON): Likewise.
* elf/sparc.h (SHN_BEFORE, SHN_AFTER): Likewise.
* elf/v850.h (SHN_V850_SCOMMON, SHN_V850_TCOMMON): Likewise.
(SHN_V850_ZCOMMON): Likewise.
* elf/x86-64.h (SHN_X86_64_LCOMMON): Likewise.

daily update

Up version to 1.2, as the 1.2 binary was pushed to users today.

If we a section with no flags followed by a section with the same name
with flags, put them in the same output section.

merge from gcc

* elf32-spu.c (spu_elf_relocate_section): Test identical conditions
to those in process_stubs for overlay symbols.

daily update

daily update

2008-03-09  Paul Brook  <paul@codesourcery.com>

gas/
* config/tc-arm.c (arm_cpu_option_table): Add cortex-a9.
* doc/c-arm.texi: Add cortex-a9.

2008-03-09  Paul Brook  <paul@codesourcery.com>

bfd/
* elf32-arm.c (elf32_arm_merge_eabi_attributes): Handle new
Tag_VFP_arch values.

binutils/
* readelf.c (arm_attr_tag_VFP_arch): Add "VFPv3-D16".

gas/
* config/tc-arm.c (fpu_vfp_ext_d32): New vairable.
(parse_vfp_reg_list, encode_arm_vfp_reg): Use it.
(arm_option_cpu_value): Add vfpv3-d16, vfpv2 and vfpv3.
(aeabi_set_public_attributes): Handle Tag_VFP_arch=VFPV3-D16.
* doc/c-arm.texi: Document new ARM FPU variants.

gas/testsuite/
* gas/arm/vfpv3-d16-bad.d: New test.
* gas/arm/vfpv3-d16-bad.l: New test.

include/opcode/
* arm.h (FPU_VFP_EXT_D32, FPU_VFP_V3D16, FPU_ARCH_VFP_V3D16): Define.

daily update

2008-03-08  Paul Brook  <paul@codesourcery.com>

bfd/
* elf32-arm.c (insert_thumb_branch): Rewrite.
(elf32_thumb_to_arm_stub): Use new insert_thumb_branch.

ld/testsuite/
* ld-arm/arm-elf.exp (armeabitests): Add thumb2-b-interwork.
* ld-arm/thumb2-b-interwork.d: New test.
* ld-arm/thumb2-b-interwork.s: New test.

2008-03-07  Paul Brook  <paul@codesourcery.com>

bfd/
* elf32-arm.c (elf32_arm_howto_table_1): Fix bitmasks for MOVW and
MOVT relocations.
(elf32_arm_final_link_relocate): Fix off by one MOVW/MOVT sign
extension.
(elf32_arm_relocate_section): Handle MOVW and MOVT
relocations.  Improve safety check for other weird relocations.
(elf32_arm_check_relocs): Only set h->needs_plt for branch/call
relocations.

gas/
* config/tc-arm.c (md_apply_fix): Use correct offset range.

ld/testsuite/
* ld-arm/arm-elf.exp (armelftests): Add movw-merge and arm-app-movw.
* ld-arm/arm-app-movw.s: New test.
* ld-arm/arm-app.r: Update expected output.
* ld-arm/movw-merge.d: New test.
* ld-arm/movw-merge.s: New test.

daily update

From Craig Silverstein: sort options into alphabetical order.

Increase maximum bucket size for dynamic hash tables.

From Craig Silverstein: implement --hash-bucket-empty-fraction for real.

Recognize --hash-bucket-empty-fraction.

* config/tc-ppc.c (ppc_setup_opcodes): Tidy.  Add code to test
for strict ordering of powerpc_opcodes, but disable for now.

* ppc-opc.c (powerpc_opcodes): Order and format.

daily update

    * emulparams/m68kelf.sh (GENERATE_PIE_SCRIPT): Define.
        (COMMONPAGESIZE): Define.

2008-03-06  Florian Krohm  <fkrohm@us.ibm.com>

* s390-opc.c (INSTR_RSL_R0RD): Fix operands.
* s390-opc.txt (cmpsc): Duplicate entry removed.
(dxr, sqdr, sqer, cxfbr, cdfbr, cefbr, lzer, lzdr, lzxr,
cegbr, cdgbr, cxgbr, cegr, cdgr, cxgr, cxfr, cdfr, cefr, fixr, fidr,
fier, cu42, cu41): Fix operand format.

2008-03-06  Andreas Krebbel  <krebbel1@de.ibm.com>

* gas/s390/esa-g5.d (cdfbr, cdfr, cefbr, cefr, cxfbr, cxfr,
dxr, fidr, fier, fixr, lzdr, lzer, lzxr, sqdr, sqer, tp): Fix
operand format.
* gas/s390/esa-g5.s: Likewise.
* gas/s390/zarch-z900.d (cdgbr, cdgr, cegbr, cegr, cxgbr,
cxgr): Likewise.
* gas/s390/zarch-z900.s: Likewise.
* gas/s390/zarch-z9-109.d (cu41, cu42): Remove mask operand.
* gas/s390/zarch-z9-109.s: Likewise.

Use absolute address for relocations when not doing a relocatable
link.

Use N_ for option help strings, and call gettext when printing them.

From Craig Silverstein: accept any string for input format, warn if
thread options when not supported.

Don't use the user-specified output format unless the user actually
specified one.

Support --hash-style=gnu.

daily update

2008-03-04  Paul Brook  <paul@codesourcery.com>

gas/
* config/tc-arm.c (arm_ext_barrier, arm_ext_msr): New.
(arm_ext_v7m): Rename...
(arm_ext_m): ... to this.  Include v6-M.
(do_t_add_sub): Allow narrow low-reg non flag setting adds.
(do_t_mrs, do_t_msr, aeabi_set_public_attributes): Use arm_ext_m.
(md_assemble): Allow wide msr instructions.
(insns): Add classifications for v6-m instructions.
(arm_cpu_option_table): Add cortex-m1.
(arm_arch_option_table): Add armv6-m.
(cpu_arch): Add ARM_ARCH_V6M.  Fix numbering of other v6 variants.

gas/testsuite/
* gas/arm/archv6m.d: New test.
* gas/arm/archv6m.s: New test.
* gas/arm/t16-bad.s: Test low register non flag setting add.
* gas/arm/t16-bad.l: Update expected output.

include/opcode/
* arm.h (ARM_EXT_V6M, ARM_EXT_BARRIER, ARM_EXT_THUMB_MSR): Define.
(ARM_AEXT_V6T2, ARM_AEXT_V7_ARM, ARM_AEXT_V7M): Use new flags.
(ARM_AEXT_V6M, ARM_ARCH_V6M): Define.

From Craig Silverstein: rework option handling to make it easier to
add a new option.

daily update

From Craig Silverstein: rename some option functions in preparation
for reworking option handling.

* MAINTAINERS: Update my email address.

Remove partial implementation that was never completed.  This was
replaced by the Stringpool<> class.

bfd/
* xtensa-isa.c (xtensa_isa_num_pipe_stages): Make max_stage static and
only compute its value once.
gas/
* config/tc-xtensa.c (xtensa_num_pipe_stages): New.
(md_begin): Initialize it.
(resources_conflict): Use it.

daily update

2008-03-03  Sterling Augustine  <sterling@tensilica.com>
* config/tc-xtensa.h (RELAX_XTENSA_NONE): New.

gas/

2008-03-03  Denys Vlasenko <vda.linux@googlemail.com>
    H.J. Lu  <hongjiu.lu@intel.com>

PR gas/5543
* read.c (pseudo_set): Don't allow global register symbol.

* symbols.c (S_SET_EXTERNAL): Don't allow register symbol
global.

2008-03-03  H.J. Lu  <hongjiu.lu@intel.com>

PR gas/5543
* write.c (write_object_file): Don't allow symbols which were
equated to register.  Stop if there is an error.

gas/testsuite/

2008-03-03  H.J. Lu  <hongjiu.lu@intel.com>

PR gas/5543
* gas/i386/i386.exp: Run inval-equ-1 and inval-equ-2.

* gas/i386/inval-equ-1.l: New.
* gas/i386/inval-equ-1.s: Likewise.
* gas/i386/inval-equ-2.l: Likewise.
* gas/i386/inval-equ-2.s: Likewise.

* dwarf2.h: (enum dwarf_location_atom): Add new DW_OP,
  DW_OP_PGI_omp_thread_num.

* dwarf.c (decode_location_expression): Handle
  DW_OP_PGI_omp_thread_num.

* elf32-spu.c (struct got_entry): Add "addend" field.
(count_stub, build_stub): Use a new stub if relocation addend
differs from existing stubs for this symbol.
(process_stubs): Deal with addends.
(spu_elf_relocate_section, spu_elf_output_symbol_hook): Likewise.

daily update

2008-03-02  H.J. Lu  <hongjiu.lu@intel.com>

PR ld/5789
* elflink.c (_bfd_elf_symbol_refs_local_p): Always return true
for hidden and local symbols.

* elf32-ppc.c (allocate_dynrelocs): Discard relocs on
undefined symbols with internal or hidden visibility.
(ppc_elf_relocate_section): Likewise.  Use SYMBOL_CALLS_LOCAL
rather than SYMBOL_REFERENCES_LOCAL on branches.  Don't
return immediately on dynamic reloc error.

gas/testsuite/

2008-03-01  H.J. Lu  <hongjiu.lu@intel.com>

* gas/i386/x86-64-branch.s: Add tests for 16-bit near indirect
branches.

* gas/i386/x86-64-inval.s: Remove tests for 16-bit near indirect
branches.

* gas/i386/x86-64-branch.d: Updated.
* gas/i386/x86-64-inval.l: Likewise.

opcodes/

2008-03-01  H.J. Lu  <hongjiu.lu@intel.com>

* i386-opc.tbl: Allow 16-bit near indirect branches for x86-64.
* i386-tbl.h: Regenerated.

daily update

* config/tc-ppc.h (struct _ppc_fix_extra): New.
(ppc_cpu): Declare.
(TC_FIX_TYPE, TC_INIT_FIX_DATA): Define.
* config/tc-ppc.c (ppu_cpu): Make global.
(ppc_insert_operand): Add ppu_cpu parameter.
(md_assemble): Adjust for above change.
(md_apply_fix): Pass tc_fix_data.ppc_cpu to ppc_insert_operand.

* objdump.c (objdump_print_addr): Initialise "sym".

bfd/
* elf64-ppc.c (build_plt_stub): Add relocs on plt call stubs
if emitrelocations.
(get_relocs): New function, split out from..
(ppc_build_one_stub): ..here.  Add relocs on plt_branch stubs if
emitrelocations.  Remove indx temp.
(ppc_size_one_stub): Count new stub relocs.
(ppc64_elf_size_stubs): Count new glink reloc.
(ppc64_elf_build_stubs): Emit glink reloc if emitrelocations.
(ppc64_elf_finish_dynamic_sections): Output glink relocs.
* elf32-ppc.c (ppc_elf_finish_dynamic_sections): Describe non-pic
glink code.
ld/testsuite/
* ld-powerpc/relbrlt.d: Update.  Also check .branch_lt section.

daily update

Remove gcc 3.2 compatibility hacks.

Change accreditation for patch for PR3134

Permit scripts to refer to the addresses of output sections which were
not created.

daily update

Don't warn about redefinitions from a --just-symbols object.

Support -d/--define-common.

Read input scripts which look like input objects with proper
serialization.

* elf32-spu.c (mark_functions_via_relocs): Don't assume that
the "->start" pointer reaches to function origin, so that we
can handle functions split over more than two sections.
(build_call_tree): Likewise.
(pasted_function): Don't attempt to set fun->start back to the
function origin, just go back one section.

Don't check assertions until symbols are finalized.  Create an output
section if the script uses a data statement with no input sections.
Don't create a loadable segment for the headers if there is no room.

Put input sections with no flags in output sections with the same name.

From Craig Silverstein: Have Parameters point to General_options.

daily update

Implement -q/--emit-relocs.

    * ld-cris/libdso-10.d: Update expected output for the Dynamic
        Section to allow an arbitrary number of spaces.

    * elf.c ( _bfd_elf_print_private_bfd_data): Call
        elf_backend_get_target_dtag if defined.
        * elf32-mips.c (elf_backend_get_target_dtag): Define.
        * elf64-mips.c: Likewise.
        * elfn32-mips.c: Likewise.
        * elfxx-mips.c (_bfd_mips_elf_get_target_dtag): New.
        * elfxx-mips.h (_bfd_mips_elf_get_target_dtag): Declare.
        * elf-bfd.h (elf_backend_get_target_dtag): Add prototype.
        * elfxx-target.h (elf_backend_get_target_dtag): Add default.
        (elf_backend_data): Add elf_backend_get_target_dtag.

Fix handling of ENTRY in linker script.

   PR 3134
   * h8300.h (h8_opcodes): Add an encoding for a mov.l instruction
   with a 32-bit displacement but without the top bit of the 4th byte
   set.

   * gas/h8300/pr3134.s: New test.
   * gas/h8300/pr3134.d: Expected disassembly
   * gas/h8300/h8300.exp: Run the new test.

   * gas/h8300/h8300-coff.exp: Fix test for COFF based ports to
   accept h8300-rtemscoff not just h8300-rtems.

oops - omitted from previous delta

    * ar.c (usage): Mention -t command line switch.
        * doc/binutils.texi (ranlib): Document -t command line switch.

daily update

From Craig Silverstein: rework handling of Script_options.

From Craig Silverstein: implement -z max-page-size and -z
common-page-size.

From Craig Silverstein: rename option functions for future option
handling rewrite.

2008-02-26  H.J. Lu  <hongjiu.lu@intel.com>

* gas/i386/jump.d: Updated for COFF.

* config/default.exp (gcc_gas_flag, dlltool_gas_flag): Define to
empty for testing an installed toolchain.

* objdump.c (objdump_print_addr): If displaying file offsets, show
  the offset even if there are no symbols available.
  (dump_section): Display nothing if none of the section is going to
  be dumped.  Display the file offset, if requested, of the location
  from where the dump starts.
  * doc/binutils.texi (objdump): Mention that dumping via the -s
  switch is also affected by the -F option.

* elf32-ppc.c (ppc_elf_check_relocs): Set pointer_equality_needed
for R_PPC_REL32 syms.  Don't set non_got_ref on branch reloc syms,
and assume branch relocs are not dynamic when non-shared.
(readonly_dynrelocs): New function, split out from..
(maybe_set_textrel): ..here, renamed from old readonly_dynrelocs.
(ppc_elf_adjust_dynamic_symbol): For symbols generating plt entries,
clear non_got_ref..
(allocate_dynrelocs): ..and don't set u.def for undefined weak.
Do allow dynamic relocs on undefined symbols.
(ppc_elf_adjust_dynamic_symbol): Use readonly_dynrelocs.
(ppc_elf_relocate_section): Mirror dynamic reloc changes in
check_relocs.
(ppc_elf_finish_dynamic_symbol): Don't give a warning on weak
plt symbols needing pointer_equality_needed.

Re-apply this patch which was accidentally deleted:
         2006-05-16  Carlos O'Donell  <carlos@codesourcery.com>

         * doc/binutils.texi: Use "Binutils Index" for index name.

daily update

daily update

daily update

gas/testsuite/

2008-02-23  H.J. Lu  <hongjiu.lu@intel.com>

* gas/i386/jump.s: Add tests for far branches.
* gas/i386/jump16.s: Likewise.

* gas/i386/jump.d: Updated.
* gas/i386/jump16.d: Likewise.
* gas/i386/x86-64-inval.l: Likewise.

* gas/i386/x86-64-inval.s: Add tests for 16-bit near indirect
branches.

opcodes/

2008-02-23  H.J. Lu  <hongjiu.lu@intel.com>

* i386-opc.tbl: Disallow 16-bit near indirect branches for
x86-64.
* i386-tbl.h: Regenerated.

* elf32-ppc.c (ppc_elf_check_relocs): Revert non_got_ref change.

* elf32-ppc.c (ppc_elf_copy_indirect_symbol): Copy
pointer_equality_needed.
(ppc_elf_check_relocs): Split out non-branch relocs from others
that might emit dynamic relocs.  Set pointer_equality_needed
for their symbols.  Don't set non_got_ref on branch reloc symbols.
(ppc_elf_hash_symbol): New function.
(elf_backend_hash_symbol): Define.
(ppc_elf_finish_dynamic_symbol): Handle pointer_equality_needed.
Error if pointer_equality_needed on weak plt symbol.