* mips.h (ELF_ST_SET_MIPS_PIC): Clear any STO_MIPS16 setting.
	* fhandler_disk_file.cc (fhandler_disk_file::pread): Skip to non-atomic
	code if mandatory locking is used on this descriptor.  Explain why.
	(fhandler_disk_file::pwrite): Ditto.
	* posix.sgml (std-notes): Extend description of file locking.
	* posix.sgml (std-notes): Fix typo.
	* libc/include/cdefs.h (__has_extension): New define.
	(__has_feature): Likewise.
	(__has_include): Likewise.
	(__has_builtin): Likewise.
	* libc/include/stdatomic.h: New.
	* include/cygwin/version.h (CYGWIN_VERSION_DLL_MINOR): Bump to 21.
Fix typos
* DevNotes: Add entry cgf-000023.
* sigproc.cc (exit_thread): Remove now-unneeded sleep code.
* exceptions.cc (exception::handle): Add comment explaining si_addr behavior.
* exceptions.cc (_cygtls::handle_SIGCONT): Reinstate previous behavior but make
sure that yield() isn't called when signal stack is locked.
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.
	* winver.rc (LegalCopyright): Belatedly bump to 2013.
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.
* cygwait.cc (cygwait): Remove lock around sig retrieval since this code is
essentially guarded by thread-specific signal_arrived.
* exceptions.cc (_cygtls::handle_SIGCONT): Simplify.  Eliminate lock/unlock
since code is guarded by signal_arrived.
revert accidentally checked in files
* miscfuncs.cc (yield): Revert (after researching) to calling SleepEx with 0.
We don't want to actually sleep when calling this function.
* exceptions.cc (try_to_debug): Don't use yield() when waiting for another
process.
(sigpacket::setup_handler): Fix long-standing problem where loop could exit
with lock held.
clarify entry
Merge branch 'Cygwin' into develop
	* libc/stdlib/gdtoa-gethex.c (__hexdig): Constify.
	(hexdig_init): Remove.
	(__hexdig_fun): New function.
	hexdig_init, added __hexdig_fun
	(gethex): Call __get_hexdig macro rather than hexdig.
	* libc/stdlib/gdtoa-hexnan.c (hexnan): Constify fpi argument.
	Call __get_hexdig macro rather than hexdig.
	* libc/stdlib/ldtoa.c: Throughout constify functions arguments where
	required by constifying the following arrays.
	(ezero): Constify.
	(eone): Constify.
	(ermsg): Constify.
	(etens): Constify.
	(emtens): Constify.
	(nan113): Constify.
	(nan64): Constify.
	(nan53): Constify.
	(nan24): Constify.
	* libc/stdlib/mprec.h (__get_hexdig): Define.
	(gethex): Constify args in declaration where appropriate.
	(hexnan): Ditto.
	(hexdig_init): Remove declaration.
	(__hexdig_fun): Declare.
	* libc/stdlib/strtod.c (fpi): Constify.
	(fpinan): Constify.
	* sec_auth.cc (get_user_groups): Don't handle ERROR_ACCESS_DENIED as
	error.  Explain why.