Properly implement STT_COMMON

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.

[x86] Resolve non-PIC undefweak symbols in executable

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.

Fix powerpc64 -r --save-restore-funcs

* 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.

Automatic date update in version.in

gdbserver/s390: Enable high GPRs, VX, TDB with 31-bit gdbserver.

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.

avoid compiler warnings in remote-m32r-sdi.c

gdb/ChangeLog:

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

Remove gdb.base/branches.c

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

commit ea8122af1432abdeb256b2c669eb3d0cf8cb97bf
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.

[PR gdb/13808] gdb.trace: Pass tdesc selected in gdbserver to IPA.

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.

Convert more variables to a constant form.

* 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.

Initialize variables in i386_linux_handle_segmentation_fault

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.

gdb.trace: Remove unnecessary target check from ftrace.exp.

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.

gdb.trace: Surround $call_insn with \y in entry-values.exp

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'.

Map registers to remote numbers when encoding an ax_reg or ax_reg_mask operation

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

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.

gas: Update tests for big-endian arc targets

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.

Remove unused field from ld_config_type structure.

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

Automatic date update in version.in

Update symbol version for symbol from linker script

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.

Handle MIPS Linux SIGTRAP siginfo.si_code values

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.

[OBV] gdb/rs6000: Fix maybe-uninitialized warning.

Introduced by 657f9cde9d531c9929bef9e02a8064101d568f50.

gdb/ChangeLog:

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

Move tfile-avx.exp to tracefile-pseudo-reg.exp

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.

Move new skip features to proper section (post 7.11).

[GAS][ARM][3/3]Add armv8.2 fp16 scalar instruction support. Based on SE_H instruction shape.

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

powerpc: Support z-point type in gdbserver.

Support z-point, so tracepoints and breakpoints can be inserted at the same
location.

gdb/gdbserver/ChangeLog:

2016-02-24  Wei-cheng Wang  <cole945@gmail.com>

* linux-ppc-low.c (ppc_supports_z_point_type): New function:
(ppc_insert_point, ppc_remove_point): Insert/remove z-packet breakpoints.
(ppc64_emit_ops_vector): Add target ops - ppc_supports_z_point_type,
ppc_insert_point, ppc_remove_point.

Revert "ABS32"

This reverts commit 30bdf5c82e5734ac9f0b18eb7af631806d419270.

[GAS][ARM][2/3]Add SE_H shape to represent fp16 type.

gas/

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

* config/tc-arm.c (NEON_ENC_TAB): Add fp16 instruction shape.
(neon_shape_class): New SC_HALF.
(neon_shape_el): New SE_H.
(neon_shape_el_size): New size for SE_H.
(N_F_ALL): New macro to aggregate N_F16, N_F32, N_64.
(neon_select_shape): Add SE_H support code.
(el_type_of_type_chk): Use N_F_ALL.
(do_vfp_nsyn_cvt): Add SE_H shape support.
(do_neon_cvtz): Likewise.
(do_neon_cvt_1): Likewise.
(do_neon_cvttb_1): Likewise.

[OPCODES][ARM][1/3]Add armv8.2 fp16 instruction dissembler support.

opcodes/

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

* arm-dis.c (coprocessor_opcodes): Add fp16 instruction entries.
(print_insn_coprocessor): Support fp16 instruction.

gas/

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

* testsuite/gas/arm/copro.d: Adjust output.
* testsuite/gas/arm/copro.s: Adjust co-processor num.

[OPCODES][ARM]Fix mask for a few coprocessor opcodes.

opcodes/

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

* arm-dis.c (coprocessor_opcodes): Fix mask for vsel, vmaxnm, vminnm,
vrint(mpna).

gas/

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

* testsuite/gas/arm/mask_1.d: New.
* testsuite/gas/arm/mask_1.s: New.

[OPCODE][ARM]Correct disassembler for cdp/cdp2, mcr/mcr2, mrc/mrc2, ldc/ldc2, stc/stc2

opcodes/

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

* arm-dis.c (print_insn_coprocessor): Check co-processor number for
cpd/cpd2, mcr/mcr2, mrc/mrc2, ldc/ldc2, stc/stc2.

gas/

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

* testsuite/gas/arm/copro.s: Use coprocessor other than 10, 11.
* testsuite/gas/arm/copro.d: Update.

ABS32

Set plt_got.offset to (bfd_vma) -1

Since plt_got.offset may be updated in x86 allocate_dynrelocs, set
plt_got.offset to (bfd_vma) -1 when setting needs_plt to 0.

* elf32-i386.c (elf_i386_allocate_dynrelocs): Set plt_got.offset
to (bfd_vma) -1 when setting needs_plt to 0.
* elf64-x86-64.c (elf_x86_64_allocate_dynrelocs): Likewise.

Fix logic in exec_file_locate_attach

This commit fixes an error in exec_file_locate_attach where
the main executable could be loaded from outside the sysroot
if a nonempty, non-"target:" sysroot was set but the discovered
executable filename did not exist in that sysroot and did exist
on the main filesystem.

gdb/ChangeLog:

* exec.c (exec_file_locate_attach): Do not attempt to
locate main executable locally if not found in sysroot.

gdb/testsuite/ChangeLog:

* gdb.base/attach-pie-noexec.exp: Do not expect an error
message on attach.

[ARM][gas] Add support for Cortex-A32

2016-02-24  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

    * config/tc-arm.c (arm_cpus): Add entry for cortex-a32.
    * doc/c-arm.texi (ARM Options): Document cortex-a32.

[ARM][doc] Document cortex-a17 mcpu option

2016-02-24  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

    * doc/c-arm.texi (ARM Options): Document cortex-a17.

Document the GDB 7.11 release in gdb/ChangeLog

gdb/ChangeLog:

GDB 7.11 released.

Build unavailable-stack frames for tracepoint.

gdb/ChangeLog:

2016-02-24  Wei-cheng Wang  <cole945@gmail.com>

* rs6000-tdep.c (rs6000_frame_cache, rs6000_frame_this_id): Handle
unavailable PC/SP to build unavailable frame.

Automatic date update in version.in

Extend "skip" command to support -file, -gfile, -function, -rfunction.

gdb/ChangeLog:

Extend "skip" command to support -file, -gfile, -function, -rfunction.
* NEWS: Document new features.
* skip.c: #include "fnmatch.h", "gdb_regex.h".
(skiplist_entry) <file>: Renamed from filename.
<function>: Renamed from function_name.
<file_is_glob, function_is_regexp>: New members.
<compiled_function_regexp, compiled_function_regexp_is_valid>:
New members.
(make_skip_entry): New function.
(free_skiplist_entry, free_skiplist_entry_cleanup): New functions.
(make_free_skiplist_entry_cleanup): New function.
(skip_file_command): Update.
(skip_function, skip_function_command): Update.
(compile_skip_regexp): New functions.
(skip_command): Add support for new options.
(skip_info): Update.
(skip_file_p, skip_gfile_p): New functions.
(skip_function_p, skip_rfunction_p): New functions.
(function_name_is_marked_for_skip): Update and simplify.
(_initialize_step_skip): Update.
* symtab.c: #include "fnmatch.h".
(compare_glob_filenames_for_search): New function.
* symtab.h (compare_glob_filenames_for_search): Declare.
* utils.c (count_path_elements): New function.
(strip_leading_path_elements): New function.
* utils.h (count_path_elements): Declare.
(strip_leading_path_elements): Declare.

gdb/doc/ChangeLog:

* gdb.texinfo (Skipping Over Functions and Files): Document new
options to "skip" command.  Update docs of output of "info skip".

gdb/testsuite/ChangeLog:

* gdb.base/skip.c (test_skip): New function.
(end_test_skip_file_and_function): New function.
(test_skip_file_and_function): New function.
* gdb.base/skip1.c (test_skip): New function.
(skip1_test_skip_file_and_function): New function.
* gdb.base/skip.exp: Add tests for new skip options.
* gdb.base/skip-solib.exp: Update expected output.
* gdb.perf/skip-command.cc: New file.
* gdb.perf/skip-command.exp: New file.
* gdb.perf/skip-command.py: New file.

Skip tests for common directive on hpux

hpux has a non-standard common directive.

* testsuite/gas/elf/elf.exp: Skip tests for common directive on
hpux.

arm-tdep.c: Remove unused "to" parameters

gdb/ChangeLog:

* arm-tdep.c (arm_decode_svc_copro): Remove "to" parameter.
(thumb_process_displaced_insn): Likewise.
(arm_process_displaced_insn): Adjust calls.

Replace $(ELF_DEPS) with $(ELF_X86_DEPS)

Define ELF_X86_DEPS with $(ELF_DEPS) plus emulparams/plt_unwind.sh,
extern_protected_data.sh and call_nop.sh.

* Makefile.am (ELF_X86_DEPS): New.
(eelf_i386.c): Replace $(ELF_DEPS) with $(ELF_X86_DEPS).
(eelf_i386_chaos.c): Likewise.
(eelf_i386_fbsd.c): Likewise.
(eelf_i386_ldso.c): Likewise.
(eelf_i386_nacl.c): Likewise.
(eelf_i386_sol2.c): Likewise.
(eelf_iamcu.c): Likewise.
(eelf32_x86_64.c): Likewise.
(eelf32_x86_64_nacl.c): Likewise.
(eelf_l1om.c): Likewise.
(eelf_l1om_fbsd.c): Likewise.
(eelf_k1om.c): Likewise.
(eelf_k1om_fbsd.c): Likewise.
(eelf_x86_64.c): Likewise.
(eelf_x86_64_cloudabi.c): Likewise.
(eelf_x86_64_fbsd.c): Likewise.
(eelf_x86_64_sol2.c): Likewise.
* Makefile.in: Regenerated.

Make linker assigned symbol dynamic only for shared object

Linker assigned symbols should be made dynamic by default only when
creating shared object or relocatable executable.

bfd/

* elflink.c (bfd_elf_record_link_assignment): Check for shared
library, instead of PIC, and don't check PDE when making linker
assigned symbol dynamic.

ld/

* testsuite/ld-frv/fdpic-pie-6.d: Updated.
* testsuite/ld-mips-elf/pie-n32.d: Likewise.
* testsuite/ld-mips-elf/pie-n64.d: Likewise.
* testsuite/ld-mips-elf/pie-o32.d: Likewise.

Increment the ABIVERSION to 5 for MIPS objects with non-executable stacks.

* bfd/elfxx-mips.c (_bfd_mips_post_process_headers): Increment
ABIVERSION for non-executable stack.

Fix the genetation of GOT entries for the Microblaze target.

PR target/19516
* elf32-microblaze.c (microblaze_elf_finish_dynamic_symbol):
Always produce a RELATIVE reloc for a local symbol.

Process record for aarch64-linux syscall

This patch updates the syscalls in sync with syscalls/aarch64-linux.xml.
Some syscalls are still not supported by gdb/linux-record.c yet.  Mark
them UNSUPPORTED_SYSCALL_MAP.

This patch fixes the following test fail,

Process record and replay target doesn't support syscall number 56^M
Process record: failed to record execution log.^M
^M
Program stopped.^M
0x00000020000e9dfc in open () from /lib/aarch64-linux-gnu/libc.so.6^M
(gdb) FAIL: gdb.reverse/fstatat-reverse.exp: continue to breakpoint: marker2

gdb:

2016-02-23  Yao Qi  <yao.qi@linaro.org>

* aarch64-linux-tdep.c (enum aarch64_syscall) <aarch64_sys_mknod>:
Remove.
<aarch64_sys_mkdir, aarch64_sys_unlink, aarch64_sys_symlink>: Remove.
<aarch64_sys_link, aarch64_sys_rename, aarch64_sys_faccess>: Remove.
<aarch64_sys_mknodat, aarch64_sys_mkdirat>: New.
<aarch64_sys_unlinkat, aarch64_sys_symlinkat>: New.
<aarch64_sys_linkat, aarch64_sys_renameat, aarch64_sys_faccessat>: New.
<aarch64_sys_open, aarch64_sys_readlink, aarch64_sys_fstatat>: Remove.
<aarch64_sys_openat, aarch64_sys_readlinkat>: New.
<aarch64_sys_newfstatat>: New.
(UNSUPPORTED_SYSCALL_MAP): New macro.
(aarch64_canonicalize_syscall): Add missing syscalls.

Fix test-case ld-elf/pr19617b

* elf32-cris.c (elf_cris_discard_excess_program_dynamics): Don't
discard unused non-function symbols when --dynamic-list-data.

Always create dynsym section with dynamic sections

We should always create the dynsym section, even if it is empty, with
dynamic sections.

* elflink.c (_bfd_elf_link_renumber_dynsyms): Always create the
dynsym section, even if it is empty, with dynamic sections.

Automatic date update in version.in

gdb.trace: Fix unavailable.exp if last register happens to be PC.

unavailable.exp executes "info registers", expecting to find at least
two instances of "<unavailable>".  However, it uses
"<unavailable>.*<unavailable>" as the pattern, which doesn't match
when the last register happens to be available (eg. PC).  Change it
to ".*<unavailable>.*<unavailable>.*" instead.

Noticed on s390, no regression on x86_64.

gdb/testsuite/ChangeLog:

* gdb.trace/unavailable.exp (gdb_unavailable_registers_test_1): Fix
info registers pattern.

gdb-gdb.py: SyntaxError: Missing parentheses in call to 'print'

After building GDB
--with-python=/usr/bin/python3
and for example stripping ./gdb and running:
./gdb -data-directory data-directory/ -iex "add-auto-load-safe-path $PWD/gdb-gdb.gdb" -iex "add-auto-load-safe-path $PWD/gdb-gdb.
py" ./gdb
I get:
Make breakpoint pending on future shared library load? (y or [n]) [answered N; input not from terminal]
  File "/home/jkratoch/redhat/gdb-test-python3/gdb/gdb-gdb.py", line 91
    print "Warning: Cannot find enum type_flag_value type."
  ^
SyntaxError: Missing parentheses in call to 'print'
(top-gdb) q

gdb/ChangeLog
2016-02-22  Jan Kratochvil  <jan.kratochvil@redhat.com>

* gdb-gdb.py (class TypeFlagsPrinter): Use parentheses for print.

Add more const type qualifiers to GAS sources.

* output-file.c (output_file_create): Make file name argument const.
(output_file_close): Likewise.
* output-file.h (output_file_create): Adjust.
(output_file_close): Likewise.
* depend.c (quote_string_for_make): Make src argument const char *.
(register_dependency): Likewise.
(wrap_output): Likewise.
* as.h (register_dependency): Adjust.
* config/tc-xtensa.c (finish_vinsn): Remove unnecessary calls to
as_where ();
* symbols.c (S_SET_EXTERNAL): Likewise.
* input-scrub.c (as_where): Return the file name.
* as.h (as_where): Adjust prototype.
* app.c (do_scrub_chars): Adjust.
* cond.c (s_elseif): Likewise.
(s_else): Likewise.
(initialize_cframe): Likewise.
* config/obj-coff.c (obj_coff_init_stab_section): Likewise.
* config/obj-elf.c (obj_elf_init_stab_section): Likewise.
* config/obj-som.c (obj_som_init_stab_section): Likewise.
* config/tc-aarch64.c (output_info): Likewise.
* config/tc-ia64.c (md_assemble): Likewise.
(dot_alias): Likewise.
* config/tc-m68k.c (m68k_frob_label): Likewise.
* config/tc-mmix.c (s_bspec): Likewise.
(mmix_handle_mmixal): Likewise.
* config/tc-rx.c (rx_include): Likewise.
* config/tc-tic54x.c (tic54x_set_default_include): Likewise.
(tic54x_adjust_symtab): Likewise.
* config/tc-xtensa.c (directive_push): Likewise.
(xtensa_sanity_check): Likewise.
(xtensa_relax_frag): Likewise.
(md_convert_frag): Likewise.
(tinsn_to_slotbuf): Likewise.
* dwarf2dbg.c (dwarf2_where): Likewise.
* ecoff.c (add_file): Likewise.
(ecoff_generate_asm_lineno): Likewise.
* expr.c (make_expr_symbol): Likewise.
* frags.c (frag_new): Likewise.
(frag_var_init): Likewise.
* listing.c (listing_newline): Likewise.
* messages.c (identify): Likewise.
(as_show_where): Likewise.
(as_warn_internal): Likewise.
(as_bad_internal): Likewise.
* read.c (s_irp): Likewise.
(s_macro): Likewise.
(s_reloc): Likewise.
* stabs.c (stabs_generate_asm_file): Likewise.
(stabs_generate_asm_lineno): Likewise.
(stabs_generate_asm_func): Likewise.
* write.c (fix_new_internal): Likewise.
* as.h (PRINTF_WHERE_LIKE): Make file name argument const.
(as_warn_value_out_of_range): Adjust prototype.
(as_bad_value_out_of_range): Adjust prototype.
* messages.c (identify): Make file name argument const char *.
(as_warn_internal): Likewise.
(as_warn_where): Likewise.
(as_bad_internal): Likewise.
(as_bad_where): Likewise.
(as_internal_value_out_of_range): Likewise.
(as_warn_value_out_of_range): Likewise.
(as_bad_value_out_of_range): Likewise.
* as.h (found_comment_file): Change type to const char *.
* cond.c (file_line::file): Likewise.
* config/obj-coff.c (obj_coff_init_stab_section): Make variable const.
* config/obj-elf.c (obj_elf_init_stab_section): Likewise.
* config/obj-som.c (obj_som_init_stab_section): Likewise.
* config/tc-aarch64.c (output_info): Likewise.
* config/tc-alpha.c (insert_operand): Likewise.
* config/tc-arc.c (insert_operand): Likewise.
* config/tc-d30v.c (check_size): Likewise.
* config/tc-ia64.c (struct alias): Likewise.
* config/tc-m68k.c (struct label_line): Likewise.
* config/tc-mcore.c (md_apply_fix): Likewise.
* config/tc-microblaze.c (md_estimate_size_before_relax): Likewise.
* config/tc-mips.c (mips16_immed): Likewise.
* config/tc-mmix.c (mmix_handle_mmixal): Likewise.
* config/tc-ppc.c (ppc_insert_operand): Likewise.
* config/tc-rx.c (rx_include): Likewise.
* config/tc-s390.c (s390_insert_operand): Likewise.
* config/tc-tic54x.c (tic54x_set_default_include): Likewise.
(tic54x_adjust_symtab): Likewise.
* config/tc-tilegx.c (insert_operand): Likewise.
(apply_special_operator): Likewise.
* config/tc-tilepro.c (insert_operand): Likewise.
* config/tc-xtensa.c (directive_push): Likewise.
* ecoff.c (add_file): Likewise.
(ecoff_generate_asm_lineno): Likewise.
* listing.c (listing_newline): Likewise.
* read.c (s_irp): Likewise.
* write.c (install_reloc): Likewise.
* write.h (struct fix): Likewise.
* input-file.c (file_name): Change type to const char *.
(saved_file::file_name): Likewise.
(input_file_open): Change type of argument to const char *.
* input-file.h (input_file_open): Adjust.
* input-scrub.c (logical_input_file): change type to const char *.
(physical_input_file): Likewise.
        (struct input_save): Adjust.
(input_scrub_push): Adjust.
(input_scrub_begin): Adjust.
(as_where): Adjust.
* input-scrub.c (input_scrub_new_file): Make file name argument const.
(input_scrub_include_file): Likewise.
(new_logical_line_flags): Likewise.
(new_logical_line): Likewise.
* as.h: Adjust.
* frags.h (struct frag): Change type of fr_file to const char *.
* expr.c (expr_symbol_where): Change type of file argument to
const char **.
* expr.h (expr_symbol_where): Likewise.
* config/tc-i370.c (md_apply_fix): adjust.
* config/tc-mmix.c (mmix_md_end): Likewise.
* config/tc-ppc.c (md_apply_fix): Likewise.
* config/tc-s390.c (md_apply_fix): Likewise.
* symbols.c (report_op_error): Likewise.
(resolve_symbol_value): Likewise.
* config/tc-ia64.c (slot::src_file): Change type to const char *.
(rsrc::file): Likewise.
* config/tc-xtensa.c (xtensa_sanity_check): Change type of variable to
const char *.
(xtensa_relax_frag): Likewise.
(md_convert_frag): Likewise.
(tinsn_to_slotbuf): Likewise.
* expr.c (expr_symbol_line): Likewise.
* macro.c (define_macro): Likewise.
* macro.h (macro_struct): Likewise.
* messages.c (as_show_where): Likewise.
* read.c (s_macro): Likewise.
* stabs.c (stabs_generate_asm_file): Likewise.
(generate_asm_file): Likewise.
(stabs_generate_asm_lineno): Likewise.
* write.h (struct reloc_list): Likewise.
* input-scrub.c (as_where): Change return type to const char *.
* as.h (as_wheree): Adjust.

Remove BSF_COMMON from comments

BSF_COMMON isn't defined in BFD.

* syms.c: Remove BSF_COMMON from comments.
* bfd-in2.h: Regenerated.

[AArch64] Remove redundant calculation of plt stub destination for veneer

elfNN_aarch64_size_stubs, the caller of aarch64_type_stub has redirected
the final destination of long branch veneer to plt stub if the call
should go through it.

It's redundant to do the same check and redirect again from scratch
inside aarch64_type_stub.

bfd/
  * elfnn-aarch64. (aarch64_type_of_stub): Remove redundation calcuation
  for destination.  Remove useless function parameters.
  (elfNN_aarch64_size_stubs): Update parameters for aarch64_type_of_stub.

Fix arm process record code format

This patch fixes the various code format issues in arm process record
in arm-tdep.c, such as using tab instead of spaces.

gdb:

2016-02-22  Yao Qi  <yao.qi@linaro.org>

* arm-tdep.c: Fix code format issues.

Automatic date update in version.in

Also update recursive call to d_lookup_symbol_imports.

Remove search_parents parameter from d_lookup_symbol_imports.

gdb/ChangeLog:

* d-namespace.c (d_lookup_symbol_imports): Remove argument
'search_parents'.  All callers updated.

Set BFD compression bits in write_object_file

There is no need to set BFD compression bits for each section.  We
should just set it once in write_object_file.

* write.c (compress_debug): Move BFD compression bits setting
to ...
(write_object_file): Here.

Automatic date update in version.in

Skip pr19539 test for cris*-*-* targets

cris*-*-* targets doesn't support PIE with relocation in pr19539 test.

* testsuite/ld-elf/pr19539.d: Skip cris*-*-* targets.

[i386] Check RegVRex in register_number

Increment register number by 16 if RegVRex is set.

* config/tc-i386.c (register_number): Check RegVRex.
* testsuite/gas/i386/x86-64-avx512f.s: Add a test for vgatherqpd
with %zmm19 and %zmm3.
* testsuite/gas/i386/x86-64-avx512f-intel.d: Updated.
* testsuite/gas/i386/x86-64-avx512f.d: Likewise.

Automatic date update in version.in

Fix snafu - add missing const declaration to 'string' local variable in s_stab_generic.

Prevent a seg-fault in the linker when accessing a specially crafted, corrupt, aout binary.

PR ld/19629
* aoutx.h (aout_link_add_symbols): Check for out of range string
table offsets.

Fix a seg-fault in the linker when it encounters a corrupt binary containing a reloc with no associated symbol.

PR ld/19628
* reloc.c (bfd_generic_get_relocated_section_contents): Stop
processing if we encounter a reloc without an associated symbol.

[ARM] Add FP16 feature extension for ARMv8.2 architecture

include/
  * opcode/arm.h (ARM_EXT2_FP16_INSN): New.

gas/
  * config/tc-arm.c (arm_ext_fp16): New.
  (arm_extensions): New entry for "fp16".

Prevent seg-fault in gas reading a binary input file.

PR 19630
* read.c (read_a_source_file): Check for assemble_one returning
with input_line_pointer set to NULL.

Change the return type of the rebuffer_line function to void.

* listing.c (rebuffer_line): Change return type to void.

Add const to various variables in the gas sources.

* symbols.c (decode_local_label_name): Make type a const char *.
* listing.c (print_source): Make type of p const char *.
(print_line): Make type of string const char *.
(buffer_line): Return const char *.
(title): Make type const char *.
(subtitle): Likewise.
(listing_listing): Make type of p const char *.
* messages.c (as_internal_value_out_of_range): Make type of prefix
const char *.
* stabs.c (s_stab_generic): make type of stab_secname, stabstr_secname
and string const char *.
* read.c (_bfd_rel): Make type of name const char *.
* app.c (out_string): Change type to const char *.
        (struct app_save::out_string): Likewise.

Automatic date update in version.in

Add D support to gdb_default_target_compile.

gdb/testsuite/ChangeLog:

* lib/future.exp: Add D support.
(gdb_find_gdc): New proc.
(gdb_default_target_compile): Add D support.

Determine the iteration count based on wallclock instead of user+system time.

gdb/testsuite/ChangeLog:

2016-02-18  Wei-cheng Wang  <cole945@gmail.com>

* gdb.trace/tspeed.c (myclock): Return wallclock instead of
user+system time.
(trace_speed_test): Determine the iteration count for a time
between 15..30 seconds.

gdb/s390: Fill guess_tracepoint_registers hook.

gdb/ChangeLog:

* s390-linux-tdep.c (s390_guess_tracepoint_registers): New function.
(s390_gdbarch_init): Fill guess_tracepoint_registers hook.

Intel MPX bound violation handling

With Intel Memory Protection Extensions it was introduced the concept of
boundary violation.  A boundary violations is presented to the inferior as
a segmentation fault having SIGCODE 3.  This patch adds a
handler for a boundary violation extending the information displayed
when a bound violation is presented to the inferior.  In the stop mode
case the debugger will also display the kind of violation: "upper" or
"lower", bounds and the address accessed.
On no stop mode the information will still remain unchanged.  Additional
information about bound violations are not meaningful in that case user
does not know the line in which violation occurred as well.

When the segmentation fault handler is stop mode the out puts will be
changed as exemplified below.

The usual output of a segfault is:
Program received signal SIGSEGV, Segmentation fault
0x0000000000400d7c in upper (p=0x603010, a=0x603030, b=0x603050,
c=0x603070, d=0x603090, len=7) at i386-mpx-sigsegv.c:68
68        value = *(p + len);

In case it is a bound violation it will be presented as:
Program received signal SIGSEGV, Segmentation fault
Upper bound violation while accessing address 0x7fffffffc3b3
Bounds: [lower = 0x7fffffffc390, upper = 0x7fffffffc3a3]
0x0000000000400d7c in upper (p=0x603010, a=0x603030, b=0x603050,
c=0x603070, d=0x603090, len=7) at i386-mpx-sigsegv.c:68
68        value = *(p + len);

In mi mode the output of a segfault is:
*stopped,reason="signal-received",signal-name="SIGSEGV",
signal-meaning="Segmentation fault", frame={addr="0x0000000000400d7c",
func="upper",args=[{name="p", value="0x603010"},{name="a",value="0x603030"}
,{name="b",value="0x603050"}, {name="c",value="0x603070"},
{name="d",value="0x603090"},{name="len",value="7"}],
file="i386-mpx-sigsegv.c",fullname="i386-mpx-sigsegv.c",line="68"},
thread-id="1",stopped-threads="all",core="6"

in the case of a bound violation:
*stopped,reason="signal-received",signal-name="SIGSEGV",
signal-meaning="Segmentation fault",
sigcode-meaning="Upper bound violation",
lower-bound="0x603010",upper-bound="0x603023",bound-access="0x60302f",
frame={addr="0x0000000000400d7c",func="upper",args=[{name="p",
value="0x603010"},{name="a",value="0x603030"},{name="b",value="0x603050"},
{name="c",value="0x603070"},{name="d",value="0x603090"},
{name="len",value="7"}],file="i386-mpx-sigsegv.c",
fullname="i386-mpx-sigsegv.c",line="68"},thread-id="1",
stopped-threads="all",core="6"

2016-02-18  Walfred Tedeschi  <walfred.tedeschi@intel.com>

gdb/ChangeLog:

* NEWS: Add entry for bound violation.
* amd64-linux-tdep.c (amd64_linux_init_abi_common):
Add handler for segmentation fault.
* gdbarch.sh (handle_segmentation_fault): New.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
* i386-linux-tdep.c (i386_linux_handle_segmentation_fault): New.
(SIG_CODE_BONDARY_FAULT): New define.
(i386_linux_init_abi): Use i386_mpx_bound_violation_handler.
* i386-linux-tdep.h (i386_linux_handle_segmentation_fault) New.
* i386-tdep.c (i386_mpx_enabled): Add as external.
* i386-tdep.c (i386_mpx_enabled): Add as external.
* infrun.c (handle_segmentation_fault): New function.
(print_signal_received_reason): Use handle_segmentation_fault.

gdb/testsuite/ChangeLog:

* gdb.arch/i386-mpx-sigsegv.c: New file.
* gdb.arch/i386-mpx-sigsegv.exp: New file.
* gdb.arch/i386-mpx-simple_segv.c: New file.
* gdb.arch/i386-mpx-simple_segv.exp: New file.

gdb/doc/ChangeLog:

* gdb.texinfo (Signals): Add bound violation display hints for
a SIGSEGV.

gdb: Add guess_tracepoint_registers hook to gdbarch.

When we're looking at a tracefile trace frame where registers are not
available, and the tracepoint has only one location, we supply
the location's address as the PC register.  However, this only works
if PC is not a pseudo register, and individual architectures may want
to guess more registers.  Add a gdbarch hook that will handle that.

gdb/ChangeLog:

* arch-utils.c (default_guess_tracepoint_registers): New function.
* arch-utils.h (default_guess_tracepoint_registers): New prototype.
* gdbarch.c: Regenerate.
* gdbarch.h: Regenerate.
* gdbarch.sh: Add guess_tracepoint_registers hook.
* tracefile.c (tracefile_fetch_registers): Use the new gdbarch hook.

Enable PR ld/19617 tests only for Linux/GNU/Solaris

Since PR ld/19617 tests require share library support, enable them
only for Linux/GNU/Solaris targets.

* testsuite/ld-elf/pr19617a.d: Enable only for *-*-linux*,
*-*-gnu* and *-*-solaris*.
* testsuite/ld-elf/pr19617b.d: Likewise.
* testsuite/ld-elf/pr19617c.d: Likewise.

Remove setup_kfail server/13796 in disp-step-syscall.exp

This patch series add fork support in target remote,

  [PATCH v2 0/3] Target remote mode fork and exec support
  https://sourceware.org/ml/gdb-patches/2015-12/msg00144.html

so GDB can be informed about the child, and adjust child correctly in
displaced stepping.  The PR server/13796 was fixed by this patch
series actually.  Test results on buildbot show this KFAIL->KPASS
change https://sourceware.org/ml/gdb-testers/2015-q4/msg10128.html

gdb/testsuite:

2016-02-18  Yao Qi  <yao.qi@linaro.org>

* gdb.base/disp-step-syscall.exp (disp_step_cross_syscall):
Don't call setup_kfail.

Set breakpoint condition-evaluation in forking-threads-plus-breakpoint.exp

Proc do_test in forking-threads-plus-breakpoint.exp has an argument
cond_bp_target, but the test doesn't use it to set
"breakpoint condition-evaluation", which is an oversight in the test.

This patch fixes it by setting "breakpoint condition-evaluation" per
$cond_bp_target.

gdb/testsuite:

2016-02-18  Yao Qi  <yao.qi@linaro.org>

* gdb.threads/forking-threads-plus-breakpoint.exp (do_test):
Set "set breakpoint condition-evaluation" per $cond_bp_target.

Always create dynamic sections for -E/--dynamic-list

In embedded environments, including boot loaders, the non-PIC executable
needs to export its symbols to modules loaded in the future.  We should
always create dynamic sections for -E/--dynamic-list.

bfd/

PR ld/19617
* elflink.c (elf_link_add_object_symbols): Always create dynamic
sections for -E/--dynamic-list.

ld/

PR ld/19617
* testsuite/ld-elf/pr19617.s: New file.
* testsuite/ld-elf/pr19617a.d: Likewise.
* testsuite/ld-elf/pr19617b.d: Likewise.
* testsuite/ld-elf/pr19617c.d: Likewise.

Fix computation of CXX_FOR_TARGET so that it can detect an in-tree xg++ executable.

* Makefile.am (CXX_FOR_TARGET): Check for the presence of an
in-tree xg++ executable after checking for the presence of an
in-tree g++ executable.
* Makefile.in: Regenerate.

Avoid setting or recording negative alignments when the target stores multiple octets in a single byte.

gas * read.c (finish_bundle): Avoid recording a negative alignment.
(do_align): Use unsigned values for n, len and max.  Only create
a frag if the alignment requirement is greater than the minimum
byte alignment.  Avoid recording a negative alignment.
(s_align): Use unsigned values where appropriate.
(bss_alloc): Use an unsigned value for the alignment.
(sizeof_sleb128): Add a comment noting that we encode one octet
per byte, regardless of the value of OCTETS_PER_BYTE_POWER.
(emit_leb129_expr): Abort if the emitted encoding was longer than
expected.
* read.h (output_leb128): Update prototype.
(sizeof_leb128): Update prototype.
(bss_alloc): Update prototype.
* write.c (record_alignment): Use an unsigned value for the
alignment.  Do not record alignments less than the minimum
alignment for a byte.
* write.h (record_alignment): Update prototype.

gdb/doc: Add documentation for tfile description section lines.

gdb/doc/ChangeLog:

* gdb.texinfo (Trace File Format): Add documentation for description
section lines.

Automatic date update in version.in

Update IFUNC tests for x32

* testsuite/ld-ifunc/ifunc-1-local-x86.d: Updated.
* testsuite/ld-ifunc/ifunc-1-x86.d: Likewise.
* testsuite/ld-ifunc/ifunc-3a-x86.d: Likewise.

xtensa: fix .init/.fini literals moving

Despite the documentation and the comment in xtensa_move_literals, in
the presence of --text-section-literals and --auto-litpools literals are
moved from the separate literal sections into .init and .fini, because
the check in the xtensa_move_literals is incorrect.

This moving was broken with introduction of auto litpools: some literals
now may be lost. This happens because literal frags emitted from .init
and .fini are not closed when new .literal_position marks new literal
pool. Then frag_align(2, 0, 0) changes type of the last literal frag to
rs_align. rs_align frags are skipped in the xtensa_move_literals. As a
result fixups against such literals are not moved out of .init.literal/
.fini.literal sections producing the following assembler error:

  test.S: Warning: fixes not all moved from .init.literal
  test.S: Internal error!

Fix check for .init.literal/.fini.literal in the xtensa_move_literals
and don't let it move literals from there in the presence of
--text-section-literals or --auto-litpools.

2016-02-17  Max Filippov  <jcmvbkbc@gmail.com>
gas/
* config/tc-xtensa.c (xtensa_move_literals): Fix check for
.init.literal/.fini.literal section name.
* testsuite/gas/xtensa/all.exp: Add init-fini-literals to the
list of xtensa tests.
* testsuite/gas/xtensa/init-fini-literals.d: New file:
init-fini-literals test result patterns.
* testsuite/gas/xtensa/init-fini-literals.s: New file:
init-fini-literals test.

[x86-64] Omit dynamic sections symbols

Define elf_backend_omit_section_dynsym to bfd_true for x86-64, similar
to i386, x86-64 doesn't need dynamic sections symbols.

bfd/

* elf64-x86-64.c (elf_backend_omit_section_dynsym): New.  Defined
to bfd_true.

ld/

* testsuite/ld-ifunc/ifunc-1-local-x86.d: Updated.
* testsuite/ld-ifunc/ifunc-1-x86.d: Likewise.
* testsuite/ld-ifunc/ifunc-2-local-x86-64.d: Likewise.
* testsuite/ld-ifunc/ifunc-2-x86-64.d: Likewise.
* testsuite/ld-ifunc/ifunc-3a-x86.d: Likewise.
* testsuite/ld-ifunc/pr17154-x86-64.d: Likewise.
* testsuite/ld-x86-64/bnd-ifunc-1.d: Likewise.
* testsuite/ld-x86-64/bnd-ifunc-2.d: Likewise.
* testsuite/ld-x86-64/bnd-plt-1.d: Likewise.
* testsuite/ld-x86-64/ilp32-4-nacl.d: Likewise.
* testsuite/ld-x86-64/ilp32-4.d: Likewise.
* testsuite/ld-x86-64/load1c-nacl.d: Likewise.
* testsuite/ld-x86-64/load1c.d: Likewise.
* testsuite/ld-x86-64/load1d-nacl.d: Likewise.
* testsuite/ld-x86-64/load1d.d: Likewise.
* testsuite/ld-x86-64/pr14207.d: Likewise.
* testsuite/ld-x86-64/pr19162.d: Likewise.
* testsuite/ld-x86-64/tlsdesc-nacl.rd: Likewise.
* testsuite/ld-x86-64/tlsdesc.rd: Likewise.
* testsuite/ld-x86-64/tlsgdesc-nacl.rd: Likewise.
* testsuite/ld-x86-64/tlsgdesc.rd: Likewise.
* testsuite/ld-x86-64/tlspic-nacl.rd: Likewise.
* testsuite/ld-x86-64/tlspic.rd: Likewise.

Add missing cleanup in exec_file_locate_attach

exec_file_locate_attach allocates memory for full_exec_path (using
either exec_file_find, source_full_path_of or xstrdup) but this
memory is never freed.  This commit adds the necessary cleanup.

gdb/ChangeLog:

* exec.c (exec_file_locate_attach): Add missing cleanup.

Skip eh-frame-hdr test for arc-elf targets.

ld * testsuite/ld-elf/eh-frame-hdr.d: Skip for ARC ELF targets.

Update list of known MSP430 MCUs.

* config/tc-msp430.c (msp430_mcu_data): Sync with data from TI's
devices.csv file as of March 2016.

gdbserver/s390: Advertise Z0 packet support.

This is necessary for upcoming tracepoint support - otherwise, setting
a tracepoint and a breakpoint on the same address will fail, since gdbserver
won't know about gdb's breakpoint.

Tested on s390x-ibm-linux-gnu and s390-ibm-linux-gnu, RHEL 7.2.

gdb/gdbserver/ChangeLog:

* linux-s390-low.c (s390_supports_z_point_type): New function.
(struct linux_target_ops): Wire s390_supports_z_point_type in.

Automatic date update in version.in

Add a missing break to readelf.c

PR binutils/19647
* readelf.c (get_section_type_name): Add a missing break.

Whitespace cleanup for skip testcase.

gdb/testsuite/ChangeLog:

* gdb.base/skip.c: Add copyright.  Whitespace cleanup.
* gdb.base/skip1.c: Ditto.
* gdb.base/skip.exp: Whitespace cleanup.

PR remote/19496, internal err forking-threads-plus-bkpt

This patch fixes an internal error that occurs in
gdb.threads/forking-threads-plus-breakpoint.exp:

/blah/binutils-gdb/gdb/target.c:2723: internal-error: Can't determine the
current address space of thread Thread 3170.3170

In default_thread_address_space, find_inferior_ptid couldn't find 3170.3170
because it had been overwritten in inferior_appeared, called as follows:

inferior_appeared
  remote_add_inferior
    remote_notice_new_inferior
      remote_update_thread_list

The cause of the problem was the following sequence of events:

* GDB knows only about the main thread

* the first fork event is reported to GDB, saved as pending_event

* qXfer:threads:read gets the threads from the remote.
  remove_new_fork_children id's the fork child from the pending event
  and removes it from the list reported to GDB.  All the rest of the
  threads, including the fork parent, are added to the GDB thread list.

* GDB stops all the threads.  All the stop events are pushed onto the
  stop reply queue behind the pending fork event.  The fork waitstatus
  is saved in the fork parent thread's pending status field
  thread_info.suspend.

* remote_wait_ns calls queued_stop_reply and process_stop_reply to
  remove the fork event from the front of the stop reply queue and save
  event information in the thread_info structure for the fork parent
  thread.  Unfortunately, none of the information saved in this way is
  the fork-specific information.

* A subsequent qXfer:threads:read packet gets the thread list including
  the fork parent and fork child.  remove_new_fork_children checks the
  thread list to see if there is a fork parent, doesn't find one, checks
  the stop reply queue for a pending fork event, doesn't find one, and
  allows the fork child thread to be reported to GDB before the fork
  event has been handled.  remote_update_thread_list calls
  remote_notice_new_thread and overwrites the current (main) thread in
  inferior_appeared.

So the fork event has been reported out of target_wait but it was left
pending on the infrun side (infrun.c:save_waitstatus).  IOW, the fork
event hasn't been processed by handle_inferior_event yet, so it hasn't
made it to tp->pending_follow yet.

The fix is to check thread_info.suspend along with the
thread_info.pending_follow in remote.c:remove_new_fork_children, to
prevent premature reporting of the fork child thread creation.

gdb/ChangeLog:

PR remote/19496
* remote.c (remove_new_fork_children): Check for pending
fork status in thread_info.suspend.

gdb/testsuite/ChangeLog:

PR remote/19496
* gdb.threads/forking-threads-plus-breakpoint.exp (do_test):
Remove kfail for PR remote/19496.

[ARC] Enable .cfi_* pseudo-ops.

gas/
2016-02-16  Claudiu Zissulescu  <claziss@synopsys.com>

* config/tc-arc.c (tc_arc_frame_initial_instructions): New
function.
(tc_arc_regname_to_dw2regnum): Likewise.
* config/tc-arc.h (TARGET_USE_CFIPOP): Define
(tc_cfi_frame_initial_instructions): Likewise.
(tc_regname_to_dw2regnum): Likewise.

gas/testsuite
2016-02-16  Claudiu Zissulescu  <claziss@synopsys.com>

* gas/cfi/cfi-arc-1.d: New file.
* gas/cfi/cfi-arc-1.s: Likewise.
* gas/cfi/cfi.exp: Allow running tests for arc.

binutils/
2016-02-16  Claudiu Zissulescu  <claziss@synopsys.com>

* readelf.c (is_32bit_pcrel_reloc): Add R_ARC_32_PCREL.

testsuite: Make standard_temp_file use invocation-specific directories

Just like standard_output_file, standard_temp_file should use multiple
directories to make the tests parallel-safe.  However,
standard_temp_file is sometimes called in some procedures that are not
test-specific.  For example, gdb_init uses it, but is called once before
all test files are ran.  Therefore, we can't organize it in a
temp/gdb.subdir/testname layout, like standard_output_file.

Because it's just meant for temporary files that don't really need to be
inspected after the test, we can just put them in a directory based on
the runtest pid.  There is always a single exp file being executed by a
particular runtest invocation at any given time, so it should be safe.

gdb/testsuite/ChangeLog:

* lib/gdb.exp (standard_temp_file): Return a path specific to
the runtest invocation.

testsuite: Fix save-trace.exp writing outside standard output directory

In save-trace.exp, we want to test loading of a tracepoint definition
file with a relative path (I am not sure why in fact).  We currently use
"savetrace-relative.tr", which ends up directly in testsuite/.  If we
use [standard_output_file] on that path, it becomes absolute.  I decided
to just replace [pwd] with . (a dot) in the path given by
standard_output_file to make it relative.  However, this trick only
works because [pwd] is a prefix of the standard output directory.  So I
added a check to verify that precondition.

gdb/testsuite/ChangeLog:

* gdb.trace/save-trace.exp: Change relative path to be in the
standard output directory.

Pass -mrelax-relocations=yes to $(TEST_AS)

x86_64_mov_to_lea5.o and x86_64_mov_to_lea6.o must be assembled with
-mrelax-relocations=yes since when assembler is configured with
--disable-x86-relax-relocations, R_X86_64_GOTPCRELX relocation won't
be generated.  This linker optimization requires R_X86_64_GOTPCRELX
relocation.

This patch also removed the duplicated x86_64_overflow_pc32.o target.

* testsuite/Makefile.am (x86_64_mov_to_lea5.o): Pass
-mrelax-relocations=yes to $(TEST_AS).
(x86_64_mov_to_lea6.o): Likewise.
(x86_64_overflow_pc32.o): Remove duplicated target.
* testsuite/Makefile.in: Regenerated.

Fix cleanup in arm_linux_software_single_step

I see the following error in testing aarch64 GDB debugging arm
program.

(gdb) PASS: gdb.reverse/readv-reverse.exp: set breakpoint at marker2
continue
Continuing.
=================================================================
==32273==ERROR: AddressSanitizer: attempting free on address which was not malloc()-ed: 0x000000ce4c00 in thread T0
    #0 0x2ba5615645c7 in __interceptor_free (/usr/lib/x86_64-linux-gnu/libasan.so.1+0x545c7)^M
    #1 0x4be8b5 in VEC_CORE_ADDR_cleanup /home/yao/SourceCode/gnu/gdb/git/gdb/common/gdb_vecs.h:34^M
    #2 0x5e6d95 in do_my_cleanups /home/yao/SourceCode/gnu/gdb/git/gdb/common/cleanups.c:154^M
    #3 0x64c99a in fetch_inferior_event /home/yao/SourceCode/gnu/gdb/git/gdb/infrun.c:3975^M
    #4 0x678437 in inferior_event_handler /home/yao/SourceCode/gnu/gdb/git/gdb/inf-loop.c:44^M
    #5 0x5078f6 in remote_async_serial_handler /home/yao/SourceCode/gnu/gdb/git/gdb/remote.c:13223^M
    #6 0x4cecfd in run_async_handler_and_reschedule /home/yao/SourceCode/gnu/gdb/git/gdb/ser-base.c:137^M
    #7 0x676864 in gdb_wait_for_event /home/yao/SourceCode/gnu/gdb/git/gdb/event-loop.c:834^M
    #8 0x676a27 in gdb_do_one_event /home/yao/SourceCode/gnu/gdb/git/gdb/event-loop.c:323^M
    #9 0x676aed in start_event_loop /home/yao/SourceCode/gnu/gdb/git/gdb/event-loop.c:347^M
    #10 0x6706d2 in captured_command_loop /home/yao/SourceCode/gnu/gdb/git/gdb/main.c:318^M
    #11 0x66db8c in catch_errors /home/yao/SourceCode/gnu/gdb/git/gdb/exceptions.c:240^M
    #12 0x6716dd in captured_main /home/yao/SourceCode/gnu/gdb/git/gdb/main.c:1157^M
    #13 0x66db8c in catch_errors /home/yao/SourceCode/gnu/gdb/git/gdb/exceptions.c:240^M
    #14 0x671b7a in gdb_main /home/yao/SourceCode/gnu/gdb/git/gdb/main.c:1165^M
    #15 0x467684 in main /home/yao/SourceCode/gnu/gdb/git/gdb/gdb.c:32^M
    #16 0x2ba563ed7ec4 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21ec4)^M
    #17 0x4676b2 (/scratch/yao/gdb/build-git/aarch64-linux-gnu/gdb/gdb+0x4676b2)

looks we should discard cleanup if function
arm_linux_software_single_step returns early, or create cleanup when
it is needed.

gdb:

2016-02-16  Yao Qi  <yao.qi@linaro.org>

* arm-linux-tdep.c (arm_linux_software_single_step): Assign
'old_chain' later.

Remove PC from syscall_next_pc

Method syscall_next_pc of struct arm_get_next_pcs_ops has an argument
PC, which is not necessary, because PC can be got from regcache in
'struct arm_get_next_pcs'.  This patch removes the PC argument of
syscall_next_pc.

gdb:

2016-02-16  Yao Qi  <yao.qi@linaro.org>

* arch/arm-get-next-pcs.h (struct arm_get_next_pcs_ops)
<syscall_next_pc>: Remove argument PC.  Callers updated.
* arm-linux-tdep.c (arm_linux_get_next_pcs_syscall_next_pc):
Remove argument PC.  Get pc from regcache_read_pc.
* arm-tdep.c (arm_get_next_pcs_syscall_next_pc): Remove
argument PC.

gdb/gdbserver:

2016-02-16  Yao Qi  <yao.qi@linaro.org>

* linux-arm-low.c (get_next_pcs_syscall_next_pc): Remove argument
PC.  Get pc from regcache_read_pc.