bfd/
2016-02-29  Cupertino Miranda  <cmiranda@synopsys.com>

	* elf32-arc.c (elf_arc_relocate_section): Added rules to fix the
	relocation addend when sections get merged.

gas/
2016-02-29  Cupertino Miranda  <cmiranda@synopsys.com>
	    Claudiu Zissulescu  <Claudiu.Zissulescu@synopsys.com>

        * config/tc-arc.c (arc_extra_reloc): Change size to 0.
        (tc_arc_fix_adjustable): Changed default return value to 1.
        * testsuite/gas/arc/j.d: Updated expected symbol
        * testsuite/gas/arc/jl.d: Likewise
        * testsuite/gas/arc/relax-avoid1.d: Likewise
        * testsuite/gas/arc/st.d: Likewise

ld/
2016-02-29 Cupertino Miranda  <cmiranda@synopsys.com>

	* testsuite/ld-elf/merge.d: Removed xfail for ARC.
	* testsuite/ld-elf/merge2.d: Likewise.
	* testsuite/ld-elf/merge3.d: Likewise.

bfd/
2016-02-29  Cupertino Miranda <Cupertino.Miranda@synopsys.com>

	* elf32-arc.c (arc_elf_final_write_processing): Add condition to
	the flag change.
        (elf_arc_relocate_section): Fixes and conditions to support PIE.
	Assert for code sections dynamic relocs.

gas/
2016-02-29  Claudiu Zissulescu  <Claudiu.Zissulescu@synopsys.com>

	* config/tc-arc.c: Enable code density instructions for ARC EM.

ld/
2016-02-29  Cupertino Miranda  <Cupertino.Miranda@synopsys.com>

	* scripttempl/arclinux.sc: Force .tdata and .tbss to always be
	generated.

Given two or more modules that import each other's scope, the current symbol
lookup routines would go round in circles looking through each import from
each module, possibly checking the same module twice or more until all possible
paths are marked as "searched".

Given enough modules, this causes an exponential slowdown in time taken to find
symbols that do exist, and infinite recursion when they don't.

gdb/ChangeLog:
	* d-namespace.c (d_lookup_symbol_imports): Avoid recursive lookups from
	cyclic imports.

gdb/testsuite/ChangeLog:
	* gdb.dlang/circular.c: New file.
	* gdb.dlang/circular.exp: New file.

This is an obvious patch to fix the following build error seen with
--enable-build-with-cxx:

../../src/gdb/rs6000-tdep.c: In function ‘rs6000_frame_cache* rs6000_frame_cache(frame_info*, void**)’:
../../src/gdb/rs6000-tdep.c:3242:15: error: invalid conversion from ‘void*’ to ‘rs6000_frame_cache*’ [-fpermissive]
       return (*this_cache);
              ~^~~~~~~~~~~~

gdb/ChangeLog

	* rs6000-tdep.c (rs6000_frame_cache): Explicitly cast return result
	to avoid invalid conversion from void *.

	ld/configure.tgt: Also add stanza for x86_64-*-elf.

For these three relocations, 17 bit signed value should be used, instead of
16 bit. The bitsize field is changed from 16 to 17, this field in aarch64
backend is used for overflow check only.

bfd/

2016-02-26  Renlin Li  <renlin.li@arm.com>

    * elfnn-aarch64.c (elfNN_aarch64_howto_table): Fix signed overflow
    check for MOVW_SABS_G0, MOVW_SABS_G1, MOVW_SABS_G2.

ld/

2016-02-26  Renlin Li  <renlin.li@arm.com>

    * testsuite/ld-aarch64/aarch64-elf.exp: Run new testcases.
    * testsuite/ld-aarch64/emit-relocs-270.d: Update to use new boundary.
    * testsuite/ld-aarch64/emit-relocs-271.d: Likewise.
    * testsuite/ld-aarch64/emit-relocs-272.d: Likewise.
    * testsuite/ld-aarch64/emit-relocs-270-overflow.d: New.
    * testsuite/ld-aarch64/emit-relocs-270-overflow.s: New.
    * testsuite/ld-aarch64/emit-relocs-271-overflow.d: New.
    * testsuite/ld-aarch64/emit-relocs-271-overflow.s: New.
    * testsuite/ld-aarch64/emit-relocs-272-overflow.d: New.
    * testsuite/ld-aarch64/emit-relocs-272-overflow.s: New.

R_386_GOT32X, R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX relocations
retrieve the symbol address via its GOT slot.  If the symbol address is
known at the link-time, we can use it directly by changing instruction
encoding.  Indirect branch can only be converted to PC relative direct
branch.  MOV can be changed to LEA or encoded differently with signed
address.  The subset of binary operations can be encoded only with
signed address.

If undefined weak symbol is resolved to zero link-time, we can use it
as address.  Zero addresss can't used with PC relative direct branch
when PIC is true since the current PC is unknown.  In 64-bit, 32-bit
relocation for PC relatiave direct branch to zero may also overflow.

If this optimization causes relocation overflow, --no-relax can be used
to work around it.

bfd/

	PR ld/19609
	* elf32-i386.c (elf_i386_convert_load): Convert to R_386_32 for
	load with locally bound symbols if PIC is false or there is no
	base register.  Optimize branch to 0 if PIC is false.
	(elf_i386_relocate_section): Don't generate dynamic relocations
	against undefined weak symbols if PIC is false.
	* elf64-x86-64.c (elf_x86_64_convert_load): Disable optimization
	if we can't estimate relocation overflow with --no-relax.
	Convert to R_X86_64_32S/R_X86_64_32 for load with locally bound
	symbols if PIC is false.  Optimize branch to 0 if PIC is false.
	(elf_x86_64_relocate_section): Don't generate dynamic relocations
	against undefined weak symbols if PIC is false.

ld/

	PR ld/19609
	* testsuite/ld-i386/got1.dd: Updated.
	* testsuite/ld-i386/lea1c.d: Likewise.
	* testsuite/ld-i386/load1-nacl.d: Likewise.
	* testsuite/ld-i386/load1.d: Likewise.
	* testsuite/ld-i386/load4b.d: Likewise.
	* testsuite/ld-i386/load5b.d: Likewise.
	* testsuite/ld-i386/mov1b.d: Likewise.
	* testsuite/ld-x86-64/mov1b.d: Likewise.
	* testsuite/ld-x86-64/mov1d.d: Likewise.
	* testsuite/ld-ifunc/ifunc-21-i386.d: Likewise.
	* testsuite/ld-ifunc/ifunc-21-x86-64.d: Likewise.
	* testsuite/ld-ifunc/ifunc-22-i386.d: Likewise.
	* testsuite/ld-ifunc/ifunc-22-x86-64.d: Likewise.
	* testsuite/ld-x86-64/gotpcrel1.dd: Likewise.
	* testsuite/ld-x86-64/lea1a.d: Likewise.
	* testsuite/ld-x86-64/lea1b.d: Likewise.
	* testsuite/ld-x86-64/lea1c.d: Likewise.
	* testsuite/ld-x86-64/lea1d.d: Likewise.
	* testsuite/ld-x86-64/lea1e.d: Likewise.
	* testsuite/ld-x86-64/lea1f.d: Likewise.
	* testsuite/ld-x86-64/mov1b.d: Likewise.
	* testsuite/ld-x86-64/mov1d.d: Likewise.
	* testsuite/ld-x86-64/pr13082-3b.d: Likewise.
	* testsuite/ld-x86-64/pr13082-4b.d: Likewise.
	* testsuite/ld-x86-64/lea1.s: Add tests for 32-bit registers.
	* testsuite/ld-i386/pr19609-1.s: New file.
	* testsuite/ld-i386/pr19609-1a.d: Likewise.
	* testsuite/ld-i386/pr19609-1b.d: Likewise.
	* testsuite/ld-i386/pr19609-1c.d: Likewise.
	* testsuite/ld-i386/pr19609-1d.d: Likewise.
	* testsuite/ld-i386/pr19609-1e.d: Likewise.
	* testsuite/ld-i386/pr19609-1f.d: Likewise.
	* testsuite/ld-i386/pr19609-1g.d: Likewise.
	* testsuite/ld-i386/pr19609-1h.d: Likewise.
	* testsuite/ld-i386/pr19609-1i.d: Likewise.
	* testsuite/ld-i386/pr19609-2.s: Likewise.
	* testsuite/ld-i386/pr19609-2a.d: Likewise.
	* testsuite/ld-i386/pr19609-2b.d: Likewise.
	* testsuite/ld-i386/pr19609-2c.d: Likewise.
	* testsuite/ld-i386/undefweak.s: Likewise.
	* testsuite/ld-i386/undefweaka.d: Likewise.
	* testsuite/ld-i386/undefweakb.d: Likewise.
	* testsuite/ld-x86-64/pr13082-3c.d: Likewise.
	* testsuite/ld-x86-64/pr13082-3d.d: Likewise.
	* testsuite/ld-x86-64/pr19609-1.s: Likewise.
	* testsuite/ld-x86-64/pr19609-1a.d: Likewise.
	* testsuite/ld-x86-64/pr19609-1b.d: Likewise.
	* testsuite/ld-x86-64/pr19609-1c.d: Likewise.
	* testsuite/ld-x86-64/pr19609-1d.d: Likewise.
	* testsuite/ld-x86-64/pr19609-1e.d: Likewise.
	* testsuite/ld-x86-64/pr19609-1f.d: Likewise.
	* testsuite/ld-x86-64/pr19609-1g.d: Likewise.
	* testsuite/ld-x86-64/pr19609-1h.d: Likewise.
	* testsuite/ld-x86-64/pr19609-1i.d: Likewise.
	* testsuite/ld-x86-64/pr19609-1j.d: Likewise.
	* testsuite/ld-x86-64/pr19609-1k.d: Likewise.
	* testsuite/ld-x86-64/pr19609-1l.d: Likewise.
	* testsuite/ld-x86-64/pr19609-1m.d: Likewise.
	* testsuite/ld-x86-64/pr19609-2.s: Likewise.
	* testsuite/ld-x86-64/pr19609-2a.d: Likewise.
	* testsuite/ld-x86-64/pr19609-2b.d: Likewise.
	* testsuite/ld-x86-64/pr19609-2c.d: Likewise.
	* testsuite/ld-x86-64/pr19609-2d.d: Likewise.
	* testsuite/ld-x86-64/pr19609-3.s: Likewise.
	* testsuite/ld-x86-64/pr19609-3a.d: Likewise.
	* testsuite/ld-x86-64/pr19609-3b.d: Likewise.
	* testsuite/ld-x86-64/pr19609-4.s: Likewise.
	* testsuite/ld-x86-64/pr19609-4a.d: Likewise.
	* testsuite/ld-x86-64/pr19609-4b.d: Likewise.
	* testsuite/ld-x86-64/pr19609-4c.d: Likewise.
	* testsuite/ld-x86-64/pr19609-4d.d: Likewise.
	* testsuite/ld-x86-64/pr19609-4e.d: Likewise.
	* testsuite/ld-x86-64/pr19609-5.s: Likewise.
	* testsuite/ld-x86-64/pr19609-5a.d: Likewise.
	* testsuite/ld-x86-64/pr19609-5b.d: Likewise.
	* testsuite/ld-x86-64/pr19609-5c.d: Likewise.
	* testsuite/ld-x86-64/pr19609-5d.d: Likewise.
	* testsuite/ld-x86-64/pr19609-5e.d: Likewise.
	* testsuite/ld-x86-64/pr19609-6.s: Likewise.
	* testsuite/ld-x86-64/pr19609-6a.d: Likewise.
	* testsuite/ld-x86-64/pr19609-6b.d: Likewise.
	* testsuite/ld-x86-64/pr19609-6c.d: Likewise.
	* testsuite/ld-x86-64/pr19609-6d.d: Likewise.
	* testsuite/ld-x86-64/pr19609-7.s: Likewise.
	* testsuite/ld-x86-64/pr19609-7a.d: Likewise.
	* testsuite/ld-x86-64/pr19609-7b.d: Likewise.
	* testsuite/ld-x86-64/pr19609-7c.d: Likewise.
	* testsuite/ld-x86-64/pr19609-7d.d: Likewise.
	* testsuite/ld-i386/i386.exp: Run undefweak tests and tests for
	PR ld/19609.
	* testsuite/ld-x86-64/x86-64.exp: Run pr13082-3c, pr13082-3d
	and tests for PR ld/19609.

2016-02-26  Egor Kochetov  <egor.kochetov@intel.com>
	    Cary Coutant  <ccoutant@gmail.com>

gold/
	PR gold/19735
	* ehframe.h (Cie::fde_encoding): New method.
	* ehframe.cc (Eh_frame::read_fde): Discard FDEs for zero-length
	address ranges.

This patch fixes various bugs in arm_record_exreg_ld_st_insn, and use
gdb.reverse/insn-reverse.c to test more arm instructions.

 - Set flag SINGLE_REG correctly.  In the arch reference manual,
   SING_REG is true when the bit 8 of instruction is zero.
 - Record the right D registers for instructions changing S registers.
 - Fix the order of length and address in record_buf_mem array.
 - Shift the offset by 2 instead of by 24.

This patch also fixes one internal error,

(gdb) PASS: gdb.reverse/finish-precsave.exp: BP at end of main
continue^M
Continuing.^M
../../binutils-gdb/gdb/utils.c:1072: internal-error: virtual memory exhausted.^M
A problem internal to GDB has been detected,FAIL: gdb.reverse/finish-precsave.exp: run to end of main (GDB internal error)

gdb:

2016-02-26  Yao Qi  <yao.qi@linaro.org>

	* arm-tdep.c (arm_record_exreg_ld_st_insn): Set 'single_reg'
	per bit 8.  Check bit 20 instead of bit 4 for VMOV
	instruction.  Record D registers for instructions changing
	S registers.  Change of the order of length and address
	in record_buf_mem array.

gdb/testsuite:

2016-02-26  Yao Qi  <yao.qi@linaro.org>

	* gdb.reverse/insn-reverse.c [__arm__] (ext_reg_load): New.
	[__arm__] (ext_reg_mov, ext_reg_push_pop): New.
	(testcases): Update.

When GDB decodes these thumb special data instructions, such as 'mov sp, r7'
the Rd is got incorrectly.  According to the arch reference manual, the Rd
is DN:Rdn, in which DN is bit 7 and Rdn is bits 0 to 2.  This patch fixes it.

gdb:

2016-02-26  Yao Qi  <yao.qi@linaro.org>

	* arm-tdep.c (thumb_record_ld_st_reg_offset): Fix the register
	number of Rd.

gdb/testsuite:

2016-02-26  Yao Qi  <yao.qi@linaro.org>

	* gdb.reverse/aarch64.c: Rename to ...
	* gdb.reverse/insn-reverse.c: ... it.
	* gdb.reverse/aarch64.exp: Rename to ...
	* gdb.reverse/insn-reverse.exp: ... it.

I said we can generialize gdb.reverse/aarch64.exp for other
architectures https://sourceware.org/ml/gdb-patches/2015-05/msg00482.html
and here is the patch to change aarch64.exp so that it can be used to
test for other architectures as well.

gdb/testsuite:

2016-02-26  Yao Qi  <yao.qi@linaro.org>

	* gdb.reverse/aarch64.c: [__aarch64__] Include arm_neon.h.
	(testcase_ftype): New.
	(testcases): New array.
	(n_testcases): New.
	(main): Call each element in testcases.
	* gdb.reverse/aarch64.exp: Remove is_aarch64_target check.
	(read_testcase): New.
	Do the tests in a loop.

The BFD configure option, --enable-elf-stt-common, can't be to used to
verify STT_COMMON implementation with the normal binutils build.  Instead,
this patch removes it from BFD.  It adds --elf-stt-common=[no|yes] to ELF
assembler/objcopy and adds -z common/-z nocommon to ld.

A configure option, --enable-elf-stt-common, is added to gas to specify
whether ELF assembler should generate common symbols with the STT_COMMON
type by default.

Since BSF_KEEP_G is never used, it is renamed to BSF_ELF_COMMON for ELF
common symbols.

bfd/

	PR ld/19645
	* bfd.c (bfd): Change flags to 20 bits.
	(BFD_CONVERT_ELF_COMMON): New.
	(BFD_USE_ELF_STT_COMMON): Likewise.
	(BFD_FLAGS_SAVED): Add BFD_CONVERT_ELF_COMMON and
	BFD_USE_ELF_STT_COMMON.
	(BFD_FLAGS_FOR_BFD_USE_MASK): Likewise.
	* configure.ac: Remove --enable-elf-stt-common.
	* elf.c (swap_out_syms): Choose STT_COMMON or STT_OBJECT for
	common symbol depending on BFD_CONVERT_ELF_COMMON and
	BFD_USE_ELF_STT_COMMON.
	* elfcode.h (elf_slurp_symbol_table): Set BSF_ELF_COMMON for
	STT_COMMON.
	* elflink.c (bfd_elf_link_mark_dynamic_symbol): Also check
	STT_COMMON.
	(elf_link_convert_common_type): New function.
	(elf_link_output_extsym): Choose STT_COMMON or STT_OBJECT for
	common symbol depending on BFD_CONVERT_ELF_COMMON and
	BFD_USE_ELF_STT_COMMON.  Set sym.st_info after sym.st_shndx.
	* elfxx-target.h (TARGET_BIG_SYM): Add BFD_CONVERT_ELF_COMMON
	and BFD_USE_ELF_STT_COMMON to object_flags.
	(TARGET_LITTLE_SYM): Likewise.
	* syms.c (BSF_KEEP_G): Renamed to ...
	(BSF_ELF_COMMON): This.
	* bfd-in2.h: Regenerated.
	* config.in: Likewise.
	* configure: Likewise.

binutils/

	PR ld/19645
	* NEWS: Mention --elf-stt-common= for objcopy.
	* doc/binutils.texi: Document --elf-stt-common= for objcopy.
	* objcopy.c (do_elf_stt_common): New.
	(command_line_switch): Add OPTION_ELF_STT_COMMON.
	(copy_options): Add --elf-stt-common=.
	(copy_usage): Add --elf-stt-common=.
	(copy_object): Also check do_elf_stt_common for ELF targets.
	(copy_file): Handle do_elf_stt_common.
	(copy_main): Handle OPTION_ELF_STT_COMMON.
	* readelf.c (apply_relocations): Support STT_COMMON.
	* testsuite/binutils-all/common-1.s: New file.
	* testsuite/binutils-all/common-1a.d: Likewise.
	* testsuite/binutils-all/common-1b.d: Likewise.
	* testsuite/binutils-all/common-1c.d: Likewise.
	* testsuite/binutils-all/common-1d.d: Likewise.
	* testsuite/binutils-all/common-1e.d: Likewise.
	* testsuite/binutils-all/common-1f.d: Likewise.
	* testsuite/binutils-all/common-2.s: Likewise.
	* testsuite/binutils-all/common-2a.d: Likewise.
	* testsuite/binutils-all/common-2b.d: Likewise.
	* testsuite/binutils-all/common-2c.d: Likewise.
	* testsuite/binutils-all/common-2d.d: Likewise.
	* testsuite/binutils-all/common-2e.d: Likewise.
	* testsuite/binutils-all/common-2f.d: Likewise.
	* testsuite/binutils-all/objcopy.exp
	(objcopy_test_elf_common_symbols): New proc.
	Run objcopy_test_elf_common_symbols for ELF targets

gas/

	PR ld/19645
	* NEWS: Mention --enable-elf-stt-common and --elf-stt-common=
	for ELF assemblers.
	* as.c (flag_use_elf_stt_common): New.
	(show_usage): Add --elf-stt-common=.
	(option_values): Add OPTION_ELF_STT_COMMON.
	(std_longopts): Add --elf-stt-common=.
	(parse_args): Handle --elf-stt-common=.
	* as.h (flag_use_elf_stt_common): New.
	* config.in: Regenerated.
	* configure: Likewise.
	* configure.ac: Add --enable-elf-stt-common and define
	DEFAULT_GENERATE_ELF_STT_COMMON.
	* gas/write.c (write_object_file): Set BFD_CONVERT_ELF_COMMON
	and BFD_USE_ELF_STT_COMMON if flag_use_elf_stt_common is set.
	* doc/as.texinfo: Document --elf-stt-common=.
	* testsuite/gas/elf/common3.s: New file.
	* testsuite/gas/elf/common3a.d: Likewise.
	* testsuite/gas/elf/common3b.d: Likewise.
	* testsuite/gas/elf/common4.s: Likewise.
	* testsuite/gas/elf/common4a.d: Likewise.
	* testsuite/gas/elf/common4b.d: Likewise.
	* testsuite/gas/i386/dw2-compress-3b.d: Likewise.
	* testsuite/gas/i386/dw2-compressed-3b.d: Likewise.
	* testsuite/gas/elf/elf.exp: Run common3a, common3b, common4a
	and common4b.
	* testsuite/gas/i386/dw2-compress-3.d: Renamed to ...
	* testsuite/gas/i386/dw2-compress-3a.d: This.  Pass
	--elf-stt-common=no to as.
	* testsuite/gas/i386/dw2-compressed-3.d: Renamed to ...
	* testsuite/gas/i386/dw2-compressed-3a.d: This.  Pass
	--elf-stt-common=no to as.
	* testsuite/gas/i386/i386.exp: Run dw2-compress-3a,
	dw2-compress-3b, dw2-compressed-3a and dw2-compressed-3b instead
	of dw2-compress-3 and dw2-compressed-3.

include/

	PR ld/19645
	* bfdlink.h (bfd_link_elf_stt_common): New enum.
	(bfd_link_info): Add elf_stt_common.

ld/

	PR ld/19645
	* NEWS: Mention -z common/-z nocommon for ELF targets.
	* emultempl/elf32.em (gld${EMULATION_NAME}_handle_option): Handle
	-z common and -z nocommon.
	* ld.texinfo: Document -z common/-z nocommon.
	* lexsup.c (elf_shlib_list_options): Add -z common/-z nocommon.
	* testsuite/ld-elf/tls_common.exp: Test --elf-stt-common=no and
	--elf-stt-common=yes with assembler.
	* testsuite/ld-elfcomm/common-1.s: New file.
	* testsuite/ld-elfcomm/common-1a.d: Likewise.
	* testsuite/ld-elfcomm/common-1b.d: Likewise.
	* testsuite/ld-elfcomm/common-1c.d: Likewise.
	* testsuite/ld-elfcomm/common-1d.d: Likewise.
	* testsuite/ld-elfcomm/common-1e.d: Likewise.
	* testsuite/ld-elfcomm/common-1f.d: Likewise.
	* testsuite/ld-elfcomm/common-2.s: Likewise.
	* testsuite/ld-elfcomm/common-2a.d: Likewise.
	* testsuite/ld-elfcomm/common-2b.d: Likewise.
	* testsuite/ld-elfcomm/common-2c.d: Likewise.
	* testsuite/ld-elfcomm/common-2d.d: Likewise.
	* testsuite/ld-elfcomm/common-2e.d: Likewise.
	* testsuite/ld-elfcomm/common-2f.d: Likewise.
	* testsuite/ld-elfcomm/common-3a.rd: Likewise.
	* testsuite/ld-elfcomm/common-3b.rd: Likewise.
	* testsuite/ld-i386/pr19645.d: Likewise.
	* testsuite/ld-i386/pr19645.s: Likewise.
	* testsuite/ld-x86-64/largecomm-1.s: Likewise.
	* testsuite/ld-x86-64/largecomm-1a.d: Likewise.
	* testsuite/ld-x86-64/largecomm-1b.d: Likewise.
	* testsuite/ld-x86-64/largecomm-1c.d: Likewise.
	* testsuite/ld-x86-64/largecomm-1d.d: Likewise.
	* testsuite/ld-x86-64/largecomm-1e.d: Likewise.
	* testsuite/ld-x86-64/largecomm-1f.d: Likewise.
	* testsuite/ld-x86-64/pr19645.d: Likewise.
	* testsuite/ld-x86-64/pr19645.s: Likewise.
	* testsuite/ld-elfcomm/elfcomm.exp: Test --elf-stt-common=yes
	with assembler.
	(assembler_generates_commons): Removed.
	Run -z common/-z nocommon tests.  Run *.d tests.
	* testsuite/ld-i386/i386.exp: Run pr19645.
	* testsuite/ld-x86-64/x86-64.exp: Likewise.
	* testsuite/ld-x86-64/dwarfreloc.exp: Test --elf-stt-common with
	assembler.  Test STT_COMMON with readelf.

For i386 and x86-64, non-PIC references to undefined weak symbols are
resolved without dynamic relocation when creating executable.  Resolved
undefined weak symbols are removed from the dynamic symbol table in
executable.  One exception is on i386, we need resolved undefined weak
symbols in the dynamic symbol table in PIE if input relocatable files
contain branchs without PLT so that we can branch to 0 with dynamic
relocation in text section.

This makes behaviors of dynamic executable and position independent
executable predictable with mixed PIC and non-PIC references to undefined
weak symbols.  If all references to undefined weak symbols are PIC,
dynamic relocations against undefined weak symbols will be generated
in executable unless -z nodynamic-undefined-weak is passed to linker.

bfd/

	PR ld/19636
	PR ld/19704
	PR ld/19719
	* elf32-i386.c (UNDEFINED_WEAK_RESOLVED_TO_ZERO): New.
	(elf_i386_link_hash_entry): Add has_got_reloc and
	has_non_got_reloc.
	(elf_i386_link_hash_table): Add interp.
	(elf_i386_link_hash_newfunc): Initialize has_got_reloc and
	has_non_got_reloc.
	(elf_i386_copy_indirect_symbol): Copy has_got_reloc and
	has_non_got_reloc.
	(elf_i386_check_relocs): Set has_got_reloc and has_non_got_reloc.
	(elf_i386_fixup_symbol): New function.
	(elf_i386_pie_finish_undefweak_symbol): Likewise.
	(elf_i386_allocate_dynrelocs): Don't allocate space for dynamic
	relocations and discard relocations against resolved undefined
	weak symbols in executable.  Don't make resolved undefined weak
	symbols in executable dynamic.  Keep dynamic non-GOT/non-PLT
	relocation against undefined weak symbols in PIE.
	(elf_i386_size_dynamic_sections): Set interp to .interp section.
	(elf_i386_relocate_section): Don't generate dynamic relocations
	against resolved undefined weak symbols in PIE, except for
	R_386_PC32.
	(elf_i386_finish_dynamic_symbol): Keep PLT/GOT entries without
	dynamic PLT/GOT relocations for resolved undefined weak symbols.
	Don't generate dynamic relocation against resolved undefined weak
	symbol in executable.
	(elf_i386_finish_dynamic_sections): Call
	elf_i386_pie_finish_undefweak_symbol on all symbols in PIE.
	(elf_backend_fixup_symbol): New.
	* elf64-x86-64.c (UNDEFINED_WEAK_RESOLVED_TO_ZERO): New.
	(elf_x86_64_link_hash_entry): Add has_got_reloc and
	has_non_got_reloc.
	(elf_x86_64_link_hash_table): Add interp.
	(elf_x86_64_link_hash_newfunc): Initialize has_got_reloc and
	has_non_got_reloc.
	(elf_x86_64_copy_indirect_symbol): Copy has_got_reloc and
	has_non_got_reloc.
	(elf_x86_64_check_relocs): Set has_got_reloc and
	has_non_got_reloc.
	(elf_x86_64_fixup_symbol): New function.
	(elf_x86_64_pie_finish_undefweak_symbol): Likewise.
	(elf_x86_64_allocate_dynrelocs): Don't allocate space for dynamic
	relocations and discard relocations against resolved undefined
	weak symbols in executable.  Don't make resolved undefined weak
	symbols in executable dynamic.
	(elf_x86_64_size_dynamic_sections): Set interp to .interp section.
	(elf_x86_64_relocate_section): Check relocation overflow for
	dynamic relocations against unresolved weak undefined symbols.
	Don't generate dynamic relocations against resolved weak
	undefined symbols in PIE.
	(elf_x86_64_finish_dynamic_symbol): Keep PLT/GOT entries without
	dynamic PLT/GOT relocations for resolved undefined weak symbols.
	Don't generate dynamic relocation against resolved undefined weak
	symbol in executable.
	(elf_x86_64_finish_dynamic_sections): Call
	elf_x86_64_pie_finish_undefweak_symbol on all symbols in PIE.
	(elf_backend_fixup_symbol): New.

include/

	PR ld/19636
	PR ld/19704
	PR ld/19719
	* bfdlink.h (bfd_link_info): Add dynamic_undefined_weak.

ld/

	PR ld/19636
	PR ld/19704
	PR ld/19719
	* Makefile.am (ELF_X86_DEPS): Add dynamic_undefined_weak.sh.
	* Makefile.in: Regenerated.
	* NEWS: Mention -z nodynamic-undefined-weak.
	* ld.texinfo: Document -z nodynamic-undefined-weak.
	* ldmain.c (main): Initialize dynamic_undefined_weak to -1.
	* emulparams/dynamic_undefined_weak.sh: New file.
	* emulparams/elf32_x86_64.sh: Source dynamic_undefined_weak.sh.
	* emulparams/elf_i386.sh: Likewise.
	* emulparams/elf_i386_be.sh: Likewise.
	* emulparams/elf_i386_chaos.sh: Likewise.
	* emulparams/elf_i386_ldso.sh: Likewise.
	* emulparams/elf_i386_vxworks.sh: Likewise.
	* emulparams/elf_iamcu.sh: Likewise.
	* emulparams/elf_k1om.sh: Likewise.
	* emulparams/elf_l1om.sh: Likewise.
	* emulparams/elf_x86_64.sh: Likewise.
	* emulparams/extern_protected_data.sh (PARSE_AND_LIST_OPTIONS):
	Append.
	(PARSE_AND_LIST_ARGS_CASE_Z): Likewise.
	* testsuite/ld-elf/pr19719a.c: New file.
	* testsuite/ld-elf/pr19719b.c: Likewise.
	* testsuite/ld-elf/pr19719c.c: Likewise.
	* testsuite/ld-elf/pr19719d.c: Likewise.
	* testsuite/ld-i386/pr19636-1.s: Likewise.
	* testsuite/ld-i386/pr19636-1a.d: Likewise.
	* testsuite/ld-i386/pr19636-1b.d: Likewise.
	* testsuite/ld-i386/pr19636-1c.d: Likewise.
	* testsuite/ld-i386/pr19636-1d-nacl.d: Likewise.
	* testsuite/ld-i386/pr19636-1d.d: Likewise.
	* testsuite/ld-i386/pr19636-1e.d: Likewise.
	* testsuite/ld-i386/pr19636-1f.d: Likewise.
	* testsuite/ld-i386/pr19636-1g.d: Likewise.
	* testsuite/ld-i386/pr19636-1h.d: Likewise.
	* testsuite/ld-i386/pr19636-1i.d: Likewise.
	* testsuite/ld-i386/pr19636-2.s: Likewise.
	* testsuite/ld-i386/pr19636-2a.d: Likewise.
	* testsuite/ld-i386/pr19636-2b.d: Likewise.
	* testsuite/ld-i386/pr19636-2c-nacl.d: Likewise.
	* testsuite/ld-i386/pr19636-2c.d: Likewise.
	* testsuite/ld-i386/pr19636-2d-nacl.d: Likewise.
	* testsuite/ld-i386/pr19636-2d.d: Likewise.
	* testsuite/ld-i386/pr19636-2e-nacl.d: Likewise.
	* testsuite/ld-i386/pr19636-2e.d: Likewise.
	* testsuite/ld-i386/pr19636-3.s: Likewise.
	* testsuite/ld-i386/pr19636-3a.d: Likewise.
	* testsuite/ld-i386/pr19636-3b.d: Likewise.
	* testsuite/ld-i386/pr19636-3c.d: Likewise.
	* testsuite/ld-i386/pr19636-3d.d: Likewise.
	* testsuite/ld-i386/pr19636-3e.d: Likewise.
	* testsuite/ld-i386/pr19636-3f.d: Likewise.
	* testsuite/ld-i386/pr19636-3g.d: Likewise.
	* testsuite/ld-i386/pr19636-4.s: Likewise.
	* testsuite/ld-i386/pr19636-4a.d: Likewise.
	* testsuite/ld-i386/pr19636-4b.d: Likewise.
	* testsuite/ld-i386/pr19636-4c.d: Likewise.
	* testsuite/ld-i386/pr19636-4d.d: Likewise.
	* testsuite/ld-i386/pr19704.out: Likewise.
	* testsuite/ld-i386/pr19704a.c: Likewise.
	* testsuite/ld-i386/pr19704b.c: Likewise.
	* testsuite/ld-x86-64/pr19636-1.s: Likewise.
	* testsuite/ld-x86-64/pr19636-1a.d: Likewise.
	* testsuite/ld-x86-64/pr19636-1b.d: Likewise.
	* testsuite/ld-x86-64/pr19636-1c.d: Likewise.
	* testsuite/ld-x86-64/pr19636-1d.d: Likewise.
	* testsuite/ld-x86-64/pr19636-1e.d: Likewise.
	* testsuite/ld-x86-64/pr19636-1f.d: Likewise.
	* testsuite/ld-x86-64/pr19636-1g.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2.s: Likewise.
	* testsuite/ld-x86-64/pr19636-2a.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2b.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2c.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2d-nacl.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2d.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2e.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2f.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2g.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2h.d: Likewise.
	* testsuite/ld-x86-64/pr19636-2i.d: Likewise.
	* testsuite/ld-x86-64/pr19636-3.s: Likewise.
	* testsuite/ld-x86-64/pr19636-3a.d: Likewise.
	* testsuite/ld-x86-64/pr19636-3b.d: Likewise.
	* testsuite/ld-x86-64/pr19636-3c.d: Likewise.
	* testsuite/ld-x86-64/pr19636-3d.d: Likewise.
	* testsuite/ld-x86-64/pr19704.out: Likewise.
	* testsuite/ld-x86-64/pr19704a.c: Likewise.
	* testsuite/ld-x86-64/pr19704b.c: Likewise.
	* testsuite/ld-elf/shared.exp (mix_pic_and_non_pic): New.
	Run mix_pic_and_non_pic.
	* testsuite/ld-i386/i386.exp (undefined_weak): New.
	Run undefined_weak and PR ld/19636 tests.
	* testsuite/ld-x86-64/x86-64.exp: Likewise.
	* testsuite/ld-x86-64/pr13082-3b.d: Updated.
	* testsuite/ld-x86-64/pr13082-4b.d: Likewise.

	* elf64-ppc.c (create_linkage_sections): Create sfpr when
	save_restore_funcs, rest of sections when not relocatable.
	(ppc64_elf_init_stub_bfd): Always call create_linkage_sections.
	(sfpr_define): Define all symbols on emitted code.
	(ppc64_elf_func_desc_adjust): Adjust for sfpr now being created
	when relocatable.  Move sfpr_define loop earlier.

Currently, 31-bit gdbserver doesn't support collecting/supplying high
GPRs, VX registers, and TDB data.  This is not much of a problem now,
since machines that have them usually have a 64-bit gdbserver that can
be used to debug 31-bit targets just fine.  However, with fast
tracepoints, it's not possible to use a 64-bit gdbserver with a 31-bit
IPA (and thus a 31-bit target), so 31-bit gdbserver has to be used
for 31-bit targets.  Thus, this patch is needed to allow collecting
high GPRs and VX registers on 31-bit targets via fast tracepoints.

gdb/gdbserver/ChangeLog:

	* linux-s390-low.c (s390_num_regs_3264): Define on 31-bit too.
	(s390_regmap_3264) [!__s390x__]: New global.
	(s390_collect_ptrace_register): Skip map entries containing -1.
	(s390_supply_ptrace_register): Ditto.
	(s390_fill_gprs_high): New function.
	(s390_store_gprs_high): New function.
	(s390_regsets): Add NT_S390_HIGH_GPRS.
	(s390_get_hwcap): Enable on 31-bit.
	(have_hwcap_s390_high_gprs): Enable on 31-bit.
	(s390_arch_setup): Enable detection of high GPRs, TDB, VX on 31-bit.
	Detect NT_S390_HIGH_GPRS.
	(s390_usrregs_info_3264): Enable on 31-bit.
	(s390_regs_info): Enable regs_info_3264 on 31-bit.
	(initialize_low_arch): Initialize s390_regsets_info_3264 on 31-bit.

gdb/ChangeLog:

	* remote-m32r-sdi.c (recv_char_data): Initialize val to avoid
	compiler warning.
	(recv_long_data): Ditto.

This patch removes gdb.base/branches.c which was added by the following
commit, but it is not used at all.

commit ea8122af
Author: John Metzler <jmetzler@cygnus>
Date:   Thu Apr 16 17:56:11 1998 +0000

    Thu Apr 16 10:52:34 1998  John Metzler  <jmetzler@cygnus.com>

        * gdb.base/branches.c: Code with lots of loops and
        subroutines. Used to test gdbs ability to single step through PC
        changes, especially to test mips-tdep.c:mips_next_pc

gdb/testsuite:

2016-02-25  Yao Qi  <yao.qi@linaro.org>

	* gdb.base/branches.c: Remove.

If gdbserver and IPA are using different tdesc, they will disagree
about 'R' trace packet size.  This results in mangled traces.

To make sure they pick the same tdesc, gdbserver pokes the tdesc
(specified as an index in a target-specific list) into a global
variable in IPA.  In theory, IPA could find out the tdesc on its
own, but that may be complex (in particular, I don't know how to
tell whether we have LAST_BREAK on s390 without messing with ptrace),
and we'd have to duplicate the logic.

Tested on i386 and x86_64.  On i386, it fixes two FAILs in ftrace.exp.
On x86_64, these failures have been KFAILed - one of them works now,
but the other now fails due to an unrelated reason (ugh).

gdb/gdbserver/ChangeLog:

	PR gdb/13808
	* Makefile.in: Add i386-*-linux-ipa.o and amd64-*-linux-ipa.o.
	* configure.srv: Ditto.
	* linux-aarch64-ipa.c (get_ipa_tdesc): New function.
	(initialize_low_tracepoint): Remove ipa_tdesc assignment.
	* linux-amd64-ipa.c: Add "linux-x86-tdesc.h" include.
	(init_registers_amd64_linux): Remove prototype.
	(tdesc_amd64_linux): Remove declaration.
	(get_ipa_tdesc): New function.
	(initialize_low_tracepoint): Remove ipa_tdesc assignment,
	initialize remaining tdescs.
	* linux-i386-ipa.c: Add "linux-x86-tdesc.h" include.
	(init_registers_i386_linux): Remove prototype.
	(tdesc_i386_linux): Remove declaration.
	(get_ipa_tdesc): New function.
	(initialize_low_tracepoint): Remove ipa_tdesc assignment,
	initialize remaining tdescs.
	* linux-low.c (linux_get_ipa_tdesc_idx): New function.
	(linux_target_ops): wire in linux_get_ipa_tdesc_idx.
	* linux-low.h (struct linux_target_ops): Add get_ipa_tdesc_idx.
	* linux-x86-low.c: Move tdesc declarations to linux-x86-tdesc.h.
	(x86_get_ipa_tdesc_idx): New function.
	(the_low_target): Wire in x86_get_ipa_tdesc_idx.
	* linux-x86-tdesc.h: New file.
	* target.h (struct target_ops): Add get_ipa_tdesc_idx.
	(target_get_ipa_tdesc_idx): New macro.
	* tracepoint.c (ipa_tdesc_idx): New macro.
	(struct ipa_sym_addresses): Add addr_ipa_tdesc_idx.
	(symbol_list): Add ipa_tdesc_idx.
	(cmd_qtstart): Write ipa_tdesc_idx in the target.
	(ipa_tdesc): Remove.
	(ipa_tdesc_idx): New variable.
	(get_context_regcache): Use get_ipa_tdesc.
	(gdb_collect): Ditto.
	(gdb_probe): Ditto.
	* tracepoint.h (get_ipa_tdesc): New prototype.
	(ipa_tdesc): Remove.

gdb/testsuite/ChangeLog:

	PR gdb/13808
	* gdb.trace/ftrace.exp (test_fast_tracepoints): Remove kfail.

	* as.c (select_emulation_mode): Add const qualifiers.
	* as.h: Likewise.
	* config/bfin-defs.h: Likewise.
	* config/bfin-parse.y: Likewise.
	* config/rx-parse.y: Likewise.
	* config/tc-aarch64.c (struct aarch64_option_table): Likewise.
	(struct aarch64_cpu_option_table): Likewise.
	(struct aarch64_arch_option_table): Likewise.
	(struct aarch64_option_cpu_value_table): Likewise.
	(struct aarch64_long_option_table): Likewise.
	(struct aarch64_option_abi_value_table): Likewise.
	* config/tc-arm.c (struct reloc_entry): Likewise.
	(tc_gen_reloc): Likewise.
	(struct arm_option_table): Likewise.
	(struct arm_legacy_option_table): Likewise.
	(struct arm_cpu_option_table): Likewise.
	(struct arm_arch_option_table): Likewise.
	(struct arm_option_extension_value_table): Likewise.
	(struct arm_option_fpu_value_table): Likewise.
	(struct arm_option_value_table): Likewise.
	(struct arm_long_option_table): Likewise.
	* config/tc-avr.c (struct avr_opcodes_s): Likewise.
	(struct mcu_type_s): Likewise.
	(struct exp_mod_s): Likewise.
	(avr_operand): Likewise.
	(avr_operands): Likewise.
	* config/tc-d10v.c (md_begin): Likewise.
	* config/tc-dlx.c: Likewise.
	* config/tc-fr30.c (fr30_is_colon_insn): Likewise.
	* config/tc-ft32.c (parse_condition): Likewise.
	* config/tc-h8300.c (do_a_fix_imm): Likewise.
	* config/tc-hppa.c (pa_ip): Likewise.
	(hppa_regname_to_dw2regnum): Likewise.
	* config/tc-i370.c (i370_elf_suffix): Likewise.
	* config/tc-i960.c (struct tabentry): Likewise.
	* config/tc-m32r.c: Likewise.
	* config/tc-m68k.c: Likewise.
	* config/tc-m68k.h: Likewise.
	* config/tc-mcore.c (parse_psrmod): Likewise.
	* config/tc-metag.c (struct metag_core_option): Likewise.
	(struct metag_long_option): Likewise.
	* config/tc-microblaze.c: Likewise.
	* config/tc-mips.c (macro): Likewise.
	* config/tc-mn10200.c: Likewise.
	* config/tc-mn10300.c: Likewise.
	* config/tc-msp430.c (struct rcodes_s): Likewise.
	(struct hcodes_s): Likewise.
	(md_parse_option): Likewise.
	* config/tc-ns32k.c (struct ns32k_option): Likewise.
	(optlist): Likewise.
	* config/tc-ppc.c (ppc_elf_suffix): Likewise.
	(tc_ppc_regname_to_dw2regnum): Likewise.
	* config/tc-ppc.h: Likewise.
	* config/tc-rl78.c: Likewise.
	* config/tc-rx.c (struct cpu_type): Likewise.
	* config/tc-sh.c (sh_regname_to_dw2regnum): Likewise.
	* config/tc-sparc.c (struct priv_reg_entry): Likewise.
	(sparc_ip): Likewise.
	* config/tc-spu.c (insn_fmt_string): Likewise.
	* config/tc-tic54x.c (tic54x_set_default_include): Likewise.
	* config/tc-v850.c: Likewise.
	* config/tc-visium.c (struct visium_arch_option_table): Likewise.
	(struct visium_long_option_table): Likewise.
	* config/tc-xgate.c: Likewise.
	* config/tc-z8k.c: Likewise.
	* read.c (add_include_dir): Likewise.
	* read.h: Likewise.

We see this error when building with gcc 4.3.

../../gdb/i386-linux-tdep.c: In function ‘i386_linux_handle_segmentation_fault’:
../../gdb/i386-linux-tdep.c:399: error: ‘access’ may be used uninitialized in this function
../../gdb/i386-linux-tdep.c:399: error: ‘upper_bound’ may be used uninitialized in this function
../../gdb/i386-linux-tdep.c:399: error: ‘lower_bound’ may be used uninitialized in this function

It's a false positive, since the variables will always get initialized
in the TRY clause, and the CATCH returns.

gdb/ChangeLog:

	* i386-linux-tdep.c (i386_linux_handle_segmentation_fault):
	Initialize variables.

The check used hardcoded targets and wasn't doing anything useful anyway,
since unsupported architectures blow up on link due to missing the IPA
library before they ever get to that check.

gdb/testsuite/ChangeLog:

	* gdb.trace/ftrace.exp: Remove unnecessary target check.

The PPC64 tracepoint patch added \y at the end of the call_insn pattern -
without that, it embarassed itself and matched the 'bl' in "Dump of
assem*bl*er code for function" as the powerpc call opcode.  Since that
sounds like a generally good idea, I've added \y before and after
call_insn for every target.  As a result, I had to change x86_64's mnemonic
to 'callq'.

gdb/testsuite/ChangeLog:

	* gdb.trace/entry-values.exp: Surround $call_insn with '\y',
	change x86_64 call_insn to 'callq'.

When encoding the agent expression operation ax_reg or ax_reg_mask, the
register number used is internal to GDB. However GDBServer expects a tdesc
based number.

This usually does not cause a problem since at the moment, for raw
registers GDBServer R trace action ignores the register mask and just
collects all registers.

It can be a problem, however with pseudo registers on some platforms if the
tdesc number doesn't match the GDB internal register number.

This is the case with ARM, the upcoming ARM tracepoint support, fails
these test cases without this patch:

gdb.trace/collection.exp: collect register locals collectively:*

GDBSever would exit with: unhandled register size
Since the register number is not mapped.

This patch fixes these issues by calling gdbarch_remote_register_number
before encoding the register number in the ax_reg or ax_reg_mask operation.

Tested on x86 native-gdbserver no regressions observed.

gdb/ChangeLog:

	* ax-general.c (ax_reg): Call gdbarch_remote_register_number.
	(ax_reg_mask): Likewise.

Add elf_x86_64_need_pic and replace x86_64_elf_howto_table[r_type].name
with howto->name.

	* elf64-x86-64.c (elf_x86_64_need_pic): New function.
	(elf_x86_64_relocate_section): Use it.  Replace
	x86_64_elf_howto_table[r_type] with howto.

Some gas tests are excluded for arc targets using the pattern arc-*-*,
however this only covers little endian arc targets.  This commit extends
the patter to cover big endian arc targets, the pattern is now arc*-*-*.

gas/ChangeLog:

	* testsuite/gas/all/gas.exp: Change target pattern to cover
	arceb-*.
	* testsuite/gas/all/redef3.d: Likewise.
	* testsuite/gas/elf/elf.exp: Likewise.

	* ld.h (struct ld_config_type): Remove specified_data_size field.

We need to update symbol version for symbols from linker script.

bfd/

	PR ld/19698
	* elflink.c (bfd_elf_record_link_assignment): Set versioned if
	symbol version is unknown.

ld/

	PR ld/19698
	* testsuite/ld-elf/pr19698.d: New file.
	* testsuite/ld-elf/pr19698.s: Likewise.
	* testsuite/ld-elf/pr19698.t: Likewise.

This unbreaks pending/delayed breakpoints handling, as well as
hardware watchpoints, on MIPS.

Ref: https://sourceware.org/ml/gdb-patches/2016-02/msg00681.html

The MIPS kernel reports SI_KERNEL for all kernel generated traps,
instead of TRAP_BRKPT / TRAP_HWBKPT, but GDB isn't aware of this.

Basically, this commit:

- Folds watchpoints logic into check_stopped_by_breakpoint, and
  renames it to save_stop_reason.

- Adds GDB_ARCH_IS_TRAP_HWBKPT.

- Makes MIPS set both GDB_ARCH_IS_TRAP_BRPT and
  GDB_ARCH_IS_TRAP_HWBKPT to SI_KERNEL.  In save_stop_reason, we
  handle the case of the same si_code returning true for both
  TRAP_BRPT and TRAP_HWBKPT by looking at what the debug registers
  say.

Tested on x86-64 Fedora 20, native and gdbserver.

gdb/ChangeLog:
2016-02-24  Pedro Alves  <palves@redhat.com>

	* linux-nat.c (save_sigtrap) Delete.
	(stop_wait_callback): Call save_stop_reason instead of
	save_sigtrap.
	(check_stopped_by_breakpoint): Rename to ...
	(save_stop_reason): ... this.  Bits of save_sigtrap folded here.
	Use GDB_ARCH_IS_TRAP_HWBKPT and handle ambiguous
	GDB_ARCH_IS_TRAP_BRKPT / GDB_ARCH_IS_TRAP_HWBKPT.  Factor out
	common code between the USE_SIGTRAP_SIGINFO and
	!USE_SIGTRAP_SIGINFO blocks.
	(linux_nat_filter_event): Call save_stop_reason instead of
	save_sigtrap.
	* nat/linux-ptrace.h: Check for both SI_KERNEL and TRAP_BRKPT
	si_code for MIPS.
	* nat/linux-ptrace.h: Fix "TRAP_HWBPT" typo in x86 table.  Add
	comments on MIPS behavior.
	(GDB_ARCH_IS_TRAP_HWBKPT): Define for all archs.

gdb/gdbserver/ChangeLog:
2016-02-24  Pedro Alves  <palves@redhat.com>

	* linux-low.c (check_stopped_by_breakpoint): Rename to ...
	(save_stop_reason): ... this.  Use GDB_ARCH_IS_TRAP_HWBKPT and
	handle ambiguous GDB_ARCH_IS_TRAP_BRKPT / GDB_ARCH_IS_TRAP_HWBKPT.
	Factor out common code between the USE_SIGTRAP_SIGINFO and
	!USE_SIGTRAP_SIGINFO blocks.
	(linux_low_filter_event): Call save_stop_reason instead of
	check_stopped_by_breakpoint and check_stopped_by_watchpoint.
	Update comments.
	(linux_wait_1): Update comments.

Introduced by 657f9cde.

gdb/ChangeLog:

	* rs6000-tdep.c (rs6000_frame_cache): Initialize frame and pc to 0
	to avoid spurious warnings.

As it is planned to add more architectures to this test, rename to a more
generic name.

gdb/testsuite/ChangeLog:

	* gdb.trace/tfile-avx.c: Move to...
	* gdb.trace/tracefile-pseudo-reg.c: Here.
	* gdb.trace/tfile-avx.exp: Move to...
	* gdb.trace/tracefile-pseudo-reg.exp: Here.

gas/

2016-02-24  Renlin Li  <renlin.li@arm.com>

	* config/tc-arm.c (BAD_FP16): New error message macro.
	(do_scalar_fp16_v82_encode): Change the coproc field to 9 for armv8.2
	fp16 scalar instructions.
	(neon_check_type): Allow different size from key.
	(do_vfp_nsyn_add_sub): Add support SE_H shape support.
	(try_vfp_nsyn): Likewise.
	(do_vfp_nsyn_mla_mls): Likewise.
	(do_vfp_nsyn_fma_fms): Likewise.
	(do_vfp_nsyn_ldm_stm): Likewise
	(do_vfp_nsyn_sqrt): Likewise
	(do_vfp_nsyn_div): Likewise
	(do_vfp_nsyn_nmul): Likewise.
	(do_vfp_nsyn_cmp): Likewise.
	(do_neon_shll): Likewise.
	(do_vfp_nsyn_cvt_fpv8): Likewise.
	(do_neon_cvttb_2): Likewise.
	(do_neon_mov): Likewise.
	(do_neon_rshift_round_imm): Likewise.
	(do_neon_ldr_str): Likewise.
	(do_vfp_nsyn_fpv8): Likewise.
	(do_vmaxnm): Likewise.
	(do_vrint_1): Likewise.
	(insns): New entry for vins, vmovx.
	(md_apply_fix): Left shift 1 bit for fp16 vldr/vstr.
	* testsuite/gas/arm/armv8-2-fp16-scalar-thumb.d: New.
	* testsuite/gas/arm/armv8-2-fp16-scalar.d: New.
	* testsuite/gas/arm/armv8-2-fp16-scalar.s: New.
	* testsuite/gas/arm/armv8-2-fp16-scalar-bad.s: New
	* testsuite/gas/arm/armv8-2-fp16-scalar-bad.d: New
	* testsuite/gas/arm/armv8-2-fp16-scalar-bad.l: New