aarch64: Add support for GNU indirect functions.

Add support for STT_GNU_IFUNC symbols to the AArch64 bfd backend. The tests
are ported from the ld-ifunc tests but are enabled for cross builds so can
be run easily without hardware or a simulator.

bfd/ChangeLog:

2013-06-07  Will Newton  <will.newton@linaro.org>

	* configure: Regenerate.
	* configure.in: Build elf-ifunc.o for AArch64.
	* elf64-aarch64.c: Include objalloc.h.
	(elf64_aarch64_howto_dynrelocs): Add R_AARCH64_IRELATIVE howto.
	(struct elf64_aarch64_link_hash_table): Add members for handling
	R_AARCH64_IRELATIVE relocations.
	(elf_aarch64_local_htab_hash): New function.
	(elf_aarch64_local_htab_eq): New function.
	(elf_aarch64_get_local_sym_hash): New function.
	(elf64_aarch64_link_hash_table_create): Initialize local STT_GNU_IFUNC
	symbol hash.
	(elf64_aarch64_hash_table_free): Free local STT_GNU_IFUNC symbol hash.
	(elf64_aarch64_final_link_relocate): Add sym argument.  Add support
	for handling STT_GNU_IFUNC symbols.
	(elf64_aarch64_gc_sweep_hook): Add support for garbage collecting
	references to STT_GNU_IFUNC symbols.
	(elf64_aarch64_adjust_dynamic_symbol): Add support for handling
	STT_GNU_IFUNC symbols.
	(elf64_aarch64_check_relocs): Add support for handling STT_GNU_IFUNC
	symbols.  Ensure we don't increase plt.refcount from -1 to 0.
	(elf64_aarch64_post_process_headers): Call _bfd_elf_set_osabi.
	(elf64_aarch64_is_function_type): Remove function.
	(elf64_aarch64_allocate_dynrelocs): Call
	_bfd_elf_allocate_ifunc_dyn_relocs for STT_GNU_IFUNC symbols.
	(elf_aarch64_allocate_local_dynrelocs): New function.
	(elf64_aarch64_size_dynamic_sections): Call
	elf_aarch64_allocate_local_dynrelocs.  Initialize next_irelative_index.
	(elf64_aarch64_create_small_pltn_entry): Add info argument.
	Add support for creating .iplt entries for STT_GNU_IFUNC symbols.
	(elf64_aarch64_finish_dynamic_symbol): Add support for handling
	STT_GNU_IFUNC symbols and .iplt.
	(elf_aarch64_finish_local_dynamic_symbol): New function.
	(elf64_aarch64_finish_dynamic_sections): Call
	elf_aarch64_finish_local_dynamic_symbol.
	(elf64_aarch64_add_symbol_hook): New function.

include/elf/ChangeLog:

2013-06-07  Will Newton  <will.newton@linaro.org>

	* aarch64.h: Add R_AARCH64_IRELATIVE reloc.

ld/ChangeLog:

2013-06-07  Will Newton  <will.newton@linaro.org>

	* emulparams/aarch64elf.sh: Add IREL_IN_PLT.

ld/testsuite/ChangeLog:

2013-06-07  Will Newton  <will.newton@linaro.org>

	* ld-ifunc/ifunc.exp: Enable ifunc tests for AArch64.
	* ld-aarch64/aarch64-elf.exp: Add ifunc tests.
	* ld-aarch64/ifunc-1-local.d: New file.
	* ld-aarch64/ifunc-1-local.s: Likewise.
	* ld-aarch64/ifunc-1.d: Likewise.
	* ld-aarch64/ifunc-1.s: Likewise.
	* ld-aarch64/ifunc-10.d: Likewise.
	* ld-aarch64/ifunc-10.s: Likewise.
	* ld-aarch64/ifunc-11.d: Likewise.
	* ld-aarch64/ifunc-11.s: Likewise.
	* ld-aarch64/ifunc-12.d: Likewise.
	* ld-aarch64/ifunc-12.s: Likewise.
	* ld-aarch64/ifunc-13.d: Likewise.
	* ld-aarch64/ifunc-13a.s: Likewise.
	* ld-aarch64/ifunc-13b.s: Likewise.
	* ld-aarch64/ifunc-14a.d: Likewise.
	* ld-aarch64/ifunc-14a.s: Likewise.
	* ld-aarch64/ifunc-14b.d: Likewise.
	* ld-aarch64/ifunc-14b.s: Likewise.
	* ld-aarch64/ifunc-14c.d: Likewise.
	* ld-aarch64/ifunc-14c.s: Likewise.
	* ld-aarch64/ifunc-14d.d: Likewise.
	* ld-aarch64/ifunc-14e.d: Likewise.
	* ld-aarch64/ifunc-14f.d: Likewise.
	* ld-aarch64/ifunc-15.d: Likewise.
	* ld-aarch64/ifunc-15.s: Likewise.
	* ld-aarch64/ifunc-16.d: Likewise.
	* ld-aarch64/ifunc-16.s: Likewise.
	* ld-aarch64/ifunc-17a.d: Likewise.
	* ld-aarch64/ifunc-17a.s: Likewise.
	* ld-aarch64/ifunc-17b.d: Likewise.
	* ld-aarch64/ifunc-17b.s: Likewise.
	* ld-aarch64/ifunc-18a.d: Likewise.
	* ld-aarch64/ifunc-18a.s: Likewise.
	* ld-aarch64/ifunc-18b.d: Likewise.
	* ld-aarch64/ifunc-18b.s: Likewise.
	* ld-aarch64/ifunc-19a.d: Likewise.
	* ld-aarch64/ifunc-19a.s: Likewise.
	* ld-aarch64/ifunc-19b.d: Likewise.
	* ld-aarch64/ifunc-19b.s: Likewise.
	* ld-aarch64/ifunc-2-local.d: Likewise.
	* ld-aarch64/ifunc-2-local.s: Likewise.
	* ld-aarch64/ifunc-2.d: Likewise.
	* ld-aarch64/ifunc-2.s: Likewise.
	* ld-aarch64/ifunc-20.d: Likewise.
	* ld-aarch64/ifunc-20.s: Likewise.
	* ld-aarch64/ifunc-3.s: Likewise.
	* ld-aarch64/ifunc-3a.d: Likewise.
	* ld-aarch64/ifunc-3b.d: Likewise.
	* ld-aarch64/ifunc-4.d: Likewise.
	* ld-aarch64/ifunc-4.s: Likewise.
	* ld-aarch64/ifunc-4a.d: Likewise.
	* ld-aarch64/ifunc-5-local.s: Likewise.
	* ld-aarch64/ifunc-5.s: Likewise.
	* ld-aarch64/ifunc-5a-local.d: Likewise.
	* ld-aarch64/ifunc-5a.d: Likewise.
	* ld-aarch64/ifunc-5b-local.d: Likewise.
	* ld-aarch64/ifunc-5b.d: Likewise.
	* ld-aarch64/ifunc-5r-local.d: Likewise.
	* ld-aarch64/ifunc-6.s: Likewise.
	* ld-aarch64/ifunc-6a.d: Likewise.
	* ld-aarch64/ifunc-6b.d: Likewise.
	* ld-aarch64/ifunc-7.s: Likewise.
	* ld-aarch64/ifunc-7a.d: Likewise.
	* ld-aarch64/ifunc-7b.d: Likewise.
	* ld-aarch64/ifunc-8.d: Likewise.
	* ld-aarch64/ifunc-8a.s: Likewise.
	* ld-aarch64/ifunc-8b.s: Likewise.
	* ld-aarch64/ifunc-9.d: Likewise.
	* ld-aarch64/ifunc-9.s: Likewise.
daily update
gas/
2013-06-08  Catherine Moore  <clm@codesourcery.com>

	* config/tc-mips.c (is_opcode_valid):  Build ASE mask.
	(is_opcode_valid_16): Pass ase value to opcode_is_member.
	(append_insn): Change INSN_xxxx to ASE_xxxx.

include/
2013-06-08  Catherine Moore  <clm@codesourcery.com>

	* opcode/mips.h (mips_opcode): Add ase field.
	(INSN_ASE_MASK): Delete.
	(INSN_DSP): Rename to ASE_DSP.  Provide new value.
	(INSN_DSPR2): Rename to ASE_DSPR2.  Provide new value.
	(INSN_MCU): Rename to ASE_MCU.  Provide new value.
	(INSN_MDMX): Rename to ASE_MDMX.  Provide new value.
	(INSN_MIPS3d): Rename to ASE_MIPS3D.  Provide new value.
	(INSN_MT): Rename to ASE_MT.  Provide new value.
	(INSN_SMARTMIPS): Rename to ASE_SMARTMIPS.  Provide new value.
	(INSN_VIRT): Rename to ASE_VIRT.  Provide new value.
	(INSN_VIRT64): Rename to ASE_VIRT64.  Provide new value.
	(opcode_is_member): Add ase argument.  Check ase.

opcodes/
2013-06-08  Catherine Moore  <clm@codesourcery.com>
	    Richard Sandiford  <rdsandiford@googlemail.com>

	* micromips-opc.c (D32, D33, MC): Update definitions.
 	(micromips_opcodes):  Initialize ase field.
	* mips-dis.c (mips_arch_choice): Add ase field.
	(mips_arch_choices): Initialize ase field.
	(set_default_mips_dis_options): Declare and setup mips_ase.
	* mips-opc.c (M3D, SMT, MX, IVIRT, IVIRT64, D32, D33, D64,
	MT32, MC): Update definitions.
	(mips_builtin_opcodes): Initialize ase field.
daily update
daily update
2013-06-09  Sandra Loosemore  <sandra@codesourcery.com>

	opcodes/
	* nios2-opc.c (nios2_builtin_opcodes): Give "trap" a type-"b"
	argument.

	gas/
	* config/tc-nios2.c (nios2_parse_args):  Allow trap argument to
	omitted.

	gas/testsuite/
	* gas/nios2/trap.s: Add additional test cases for optional
	argument.
	* gas/nios2/trap.d: Likewise.
	PR ld/15598
	* ld.texinfo (Source Code Reference): Fix typos.
	gas/
	* config/tc-mips.c (append_insn): Don't do branch relaxation for
	MIPS-3D instructions either.
	(md_convert_frag): Update the COPx branch mask accordingly.

	* config/tc-mips.c (md_show_usage): Document --[no-]relax-branch
	option.
	* doc/as.texinfo (Overview): Add --relax-branch and
	--no-relax-branch.
	* doc/c-mips.texi (MIPS Opts): Document --relax-branch and
	--no-relax-branch.

	gas/testsuite/
	* gas/mips/relax-bc1any.l: New test.
	* gas/mips/relax-bc1any.s: New test source.
	* gas/mips/mips.exp: Run the new test.
daily update
	* elf32-rl78.c (rl78_elf_finish_dynamic_sections): Onlly run
	checks if the dynamic sections have been created and relaxation
	has not been performed.
bfd/elf64-aarch64.c: Use ELF64_R_SYM instead of ELF32_R_SYM.

Fix incorrect usage of ELF32_R_SYM introduced in ifunc changes.

bfd/ChangeLog:

2013-06-11  Will Newton  <will.newton@linaro.org>

	* elf64-aarch64.c (elf_aarch64_get_local_sym_hash): Use
	ELF64_R_SYM instead of ELF32_R_SYM.
* elf32-rl78.c (rl78_elf_relocate_section): Fix OPsub math.
daily update
	* ldcref.c (output_one_cref): Place common definitions after
	ordinary definitions but before references.
oops - omitted
2013-06-12  Sandra Loosemore  <sandra@codesourcery.com>

	include/opcode/
	* nios2.h (OP_MATCH_ERET): Correct eret encoding.

	gas/testsuite/
	* gas/nios2/tret.d: Correct eret encoding.
2013-06-12  Sandra Loosemore  <sandra@codesourcery.com>

	gas/
	* config/tc-nios2.c (md_apply_fix):  Mask constant
	BFD_RELOC_NIOS2_HIADJ16 value to 16 bits.

	gas/testsuite/
	* gas/nios2/movia.s: Add additional test case with negative
	constant value.
	* gas/nios2/movia.d: Likewise.
daily update
	PR gas/15602
	* config/tc-m68k.h (TC_CHECK_ADJUSTED_BROKEN_DOT_WORD): Define.
	* config/tc-m68k.c (tc_m68k_check_adjusted_broken_word): New
	function.  Generates an error if the adjusted offset is out of a
	16-bit range.
	PR ld/15302
	* elf32-arm.c (allocate_dynrelocs_for_symbol): Transform
	ST_BRANCH_TO_ARM into ST_BRANCH_TO_THUMB if the target only
	supports thumb instructions.

	PR ld/15302
	* ld-arm/branch-lks-sym.ld: New script.
	* ld-arm/thumb-b-lks-sym.s: New test.
	* ld-arm/thumb-b-lks-sym.d: Expected disassembly.
	* ld-arm/thumb-bl-lks-sym.s: New test.
	* ld-arm/thumb-bl-lks-sym.d: Expected disassembly.
	* ld-arm/arm-elf.exp: Run the new tests.