gdb/doc:

* gdb.texinfo (In-Process Agent): Add 'In-Process Agent
Protocol'.
(In-Process Agent Protocol, IPA Protocol Objects)
(IPA Protocol Commands): New nodes.
(Tracepoint Packets): Add anchors.

*** empty log message ***

daily update

* dwarf2read.c (dwarf2_cu): Add comment.

PR 13697
* scripttempl/avr.sc (.data): Keep it.

* avr.h: (AVR_ISA_XCH): New define.
(AVR_ISA_XMEGA): Use it.
(XCH, LAS, LAT, LAC): New XMEGA opcodes.

binutils/testsuite/
* binutils-all/i386/i386.exp: Don't skip for x86_64-*-linux*.

gdb/testsuite/
* gdb.trace/strace.exp: Shorten some too-long lines.

Move gas/all/rept.[ds] to gas/i386

* gas/all/gas.exp: Don't run rept.

* gas/all/rept.d: Moved to ...
* gas/i386/rept.d: Here.
* gas/all/rept.s: Moved to ...
* gas/i386/rept.s: Here.

* gas/i386/i386.exp: Run rept.

Add a testcase for PR gas/14201

PR gas/14201
* gas/all/gas.exp: Run rept.

* gas/all/rept.d: New file.
* gas/all/rept.s: Likewise.

PR gas/14201
* sb.h (sb_max_power_two): Delete.
(struct sb): Delete "item" and "pot".  Make "len" a size_t.  Add "max".
(sb_element): Delete.
(sb_add_char, sb_add_buffer, sb_skip_comma, sb_skip_write): Update
prototypes.
* sb.c (string_count, free_list): Delete.
(sb_build, sb_kill, sb_check): Rewrite.
(scrub_from_sb, sb_add_char, sb_add_string, sb_add_buffer,
sb_skip_white, sb_skip_comma): Replace assorted int params,
vars and return types with size_t.
* input-scrub.c: Likewise.
* macro.c: Likewise.
* macro.h: Likewise.
* as.c: Likewise.
* as.h: Likewise.
* input-file.h: Likewise.
* input-file.c: Likewise.
* read.c: Likewise.
* app.c: ..or ptrdiff_t.
* input-file.c (input_file_get): Use ferror.
(input_file_give_next_buffer): Use input_file_get.

gold/
* layout.cc (gdb_sections): Remove ".debug_" prefixes,
add .debug_macro.
(lines_only_debug_sections): Likewise.
(gdb_fast_lookup_sections): New static array.
(is_gdb_debug_section): Rename formal parameter.
(is_lines_only_debug_section): Likewise.
(is_gdb_fast_lookup_section): New function.
(Layout::include_section): Check for ".zdebug_" prefix; pass
section name suffix to is_gdb_debug_section, et al.; check for
fast-lookup sections when building .gdb_index.
* options.h (--strip-debug-gdb): Update GDB version number.

*** empty log message ***

daily update

gold/
* configure.ac: Add check for fallocate.
* configure: Regenerate.
* config.in: Regenerate.

* options.h (class General_options): Add --mmap-output-file and
--posix-fallocate options.
* output.cc: (posix_fallocate): Remove; replace with...
(gold_fallocate): New function.
(Output_file::map_no_anonymous): Call gold_fallocate.
(Output_file::map): Check --mmap-output-file option.

Move config.h to start of includes.

* mips-tdep.c (mips_pseudo_register_type): Remove tdep local
variable.
(mips_eabi_push_dummy_call): Likewise.
(mips_n32n64_push_dummy_call): Likewise.
(mips_o32_push_dummy_call): Likewise.
(mips_o64_push_dummy_call): Likewise.

* mips-tdep.c (mips_convert_register_p): Correct coding style.

* mips-tdep.c (mips_pseudo_register_type): Use
mips_float_register_p.

2012-06-06  Pedro Alves  <palves@redhat.com>

* infrun.c (handle_inferior_event): Remove calls to
reinit_frame_cache that follow a context_switch call.

2012-06-06  Pedro Alves  <palves@redhat.com>

* infrun.c (handle_inferior_event) <deferred_step_ptid>: Use
context_switch and remove stale comment.

gdb/
2012-06-06  Pedro Alves  <palves@redhat.com>

* infrun.c (struct execution_control_state): Remove
`new_thread_event' field.
(handle_inferior_event): Simplify new threads handling; don't
resume the inferior if we find a new thread.

gdb/testsuite/
2012-06-06  Pedro Alves  <palves@redhat.com>

* gdb.threads/clone-new-thread-event.c: New file.
* gdb.threads/clone-new-thread-event.exp: New file.

gdb/
* NEWS: Document the deprecation of SH's 'regs' command.
* inferior.h (all_registers_info): Add function declaration.
* sh-tdep.c (sh_show_regs): Remove variable.
(sh_generic_show_regs, sh3_show_regs, sh2e_show_regs, sh2a_show_regs)
(sh2a_nofpu_show_regs, sh3e_show_regs, sh3_dsp_show_regs)
(sh4_show_regs, sh4_nofpu_show_regs, sh_dsp_show_regs)
(sh_show_regs_command): Remove functions.
(sh_gdbarch_init): Don't set sh_show_regs.
(_initialize_sh_tdep): Make the 'regs' command an deprecated alias to
'info all-registers'.
* sh64-tdep.c (sh64_show_media_regs, sh64_show_compact_regs)
(sh64_show_regs): Remove functions.
* sh64-tdep.h (sh64_show_regs): Remove function declaration.

gdb/doc/
* gdb.texinfo: Document the deprecation of SH's 'regs' command.

gdb/
* configure.ac: Move development=true below AC_INIT.
* configure: Regenerate.

Add #include "config.h".

bfd/
* elflink.c (elf_link_input_bfd): Provide a file symbol for
each input file with local syms, if the input lacks such.
(bfd_elf_final_link): Add a file symbol to mark end of locals
for which we can associate with input files.
(struct elf_final_link_info): Add filesym_count field.
(struct elf_outext_info): Add need_second_pass and second_pass.
(elf_link_output_extsym): Detect symbols defined in the output
file, emit them on second pass over locals.
ld/testsuite/
Update to suit added STT_FILE symbols.

gdb/testsuite/

* gdb.base/dprintf.c (main): Add extra parameter when calling
printf and fprintf.
(bar): New function.  It is a dead function, but to ensure
'malloc' is linked explicitly.

gdb/testsuite/

* gdb.base/info-proc.exp: Return if target doesn't support
'info proc'.

gdb/gdbserver/
* ax.c (gdb_eval_agent_expr): Print `top' in hex.

gdb/doc/
* gdb.texinfo: Update copyright year.

2012-06-05  Jing Yu  <jingyu@google.com>

* gold.h (textdomain): Add do {} to empty while(0).
(bindtextdomain): Likewise.

* ld-mmix/bpo-9.d: Update.
* ld-mmix/bpo-10.d: Update.
* ld-mmix/bpo-11.d: Update.
* ld-mmix/sec-7m.d: Update.

* mi/mi-interp.c (mi_interpreter_init): Set raw_stdout from
gdb_stdout.

*** empty log message ***

daily update

gdb/
* corefile.c (read_memory, read_stack, write_memory): Accept LEN
argument as ssize_t.
* gdbcore.h (read_memory, read_stack, write_memory): Likewise.
* remote.c (remote_write_bytes_aux, remote_write_bytes): Likewise.
* target.c (target_read_stack, target_write_memory)
(target_write_raw_memory): Likewise.
* target.h (target_read_stack, target_write_memory)
(target_write_raw_memory): Likewise.

gdb/
* symfile-mem.c: Change gdb_static_assert to ssize_t.
(target_read_memory_bfd): Cast gdb_assert LEN to ssize_t.
* target.c (target_read_memory): Change LEN to ssize_t.
* target.h (target_read_memory): Change LEN to ssize_t.

2012-06-05  Pedro Alves  <palves@redhat.com>

PR backtrace/13866

* breakpoint.c (until_break_command): Only fetch the selected
frame after decode_line_1.

gdb/testsuite/
* gdb.base/freebpcmd.exp (set lines): Check valid range of I.
(run program with breakpoint commands): XFAIl if it is not.

2012-06-05  Joakim Tjernlund  <Joakim.Tjernlund@transmode.se>

* solib-svr4.c (enable_break): Don't fallback to setting the solib
event breakpoint at _start, __start or main if a program
interpreter is not found.

Windows-specific iterate_over_objfiles_in_search_order

This patch sets the windows target to use their own version of
the iterate_over_objfiles_in_search_order gdbarch method, in
order to make global symbol searches sensitive to the current
objfile.

gdb/ChangeLog:

        * windows-tdep.h (windows_iterate_over_objfiles_in_search_order):
        Add declaration.
        * windows-tdep.c: #include "objfiles.h".
        (windows_iterate_over_objfiles_in_search_order): New function.
        * amd64-windows-tdep.c (amd64_windows_init_abi): Set
        iterate_over_objfiles_in_search_order gdbarch method to
        windows_iterate_over_objfiles_in_search_order.
        * i386-cygwin-tdep.c (i386_cygwin_init_abi): Likewise.

New "iterate_over_objfiles_in_search_order" gdbarch method.

This patch introduces the "iterate_over_objfiles_in_search_order"
gdbarch method, as well as its default implementation, and converts
the areas where it will matter to using this gdbarch method.

The default method implementation is the only one installed, and
the changes should have no functional impact in terms of behavior.
This only paves the way for the architectures that will need their
own version.

gdb/ChangeLog:

        * gdbarch.sh: Add generation of
        "iterate_over_objfiles_in_search_order_cb_ftype" typedef in
        gdbarch.h.  Add include of "objfiles.h" in gdbarch.c.
        (iterate_over_objfiles_in_search_order): New gdbarch method.
        * gdbarch.h, gdbarch.c: Regenerate.
        * objfiles.h (default_iterate_over_objfiles_in_search_order):
        Add declaration.
        * objfiles.c (default_iterate_over_objfiles_in_search_order):
        New function.
        * symtab.c (lookup_symbol_aux_objfile): New function, extracted
        out of lookup_symbol_aux_symtabs.
        (lookup_symbol_aux_symtabs): Replace extracted-out code by
        call to lookup_symbol_aux_objfile.
        (struct global_sym_lookup_data): New type.
        (lookup_symbol_global_iterator_cb): New function.
        (lookup_symbol_global): Search for symbol using
        gdbarch_iterate_over_objfiles_in_search_order and
        lookup_symbol_global_iterator_cb.
        * findvar.c (struct minsym_lookup_data): New type.
        (minsym_lookup_iterator_cb): New function.
        (default_read_var_value) [case LOC_UNRESOLVED]: Resolve the
        symbol's address via gdbarch_iterate_over_objfiles_in_search_order
        and minsym_lookup_iterator_cb.

Revert "Search global symbols from the expression's block objfile first."

The search order used in this patch breaks global symbol lookups
for certain symbols when copy-relocation is used.  A slightly different
search order will be implemented later.

gdb/ChangeLog:

        Revert the following patch:
        * findvar.c (default_read_var_value): For LOC_UNRESOLVED symbols,
        try locating the symbol in the symbol's own objfile first, before
        extending the search to all objfiles.
        * symtab.c (lookup_symbol_aux_objfile): New function, extracted
        out of lookup_symbol_aux_symtabs.
        (lookup_symbol_aux_symtabs): Add new parameter "exclude_objfile".
        Replace extracted-out code by call to lookup_symbol_aux_objfile.
        Do not search EXCLUDE_OBJFILE.
        (lookup_static_symbol_aux): Update call to lookup_symbol_aux_symtabs.
        (lookup_symbol_global): Search for matches in the block's objfile
        first, before searching all other objfiles.

Make ctxobj.exp and print-file-var.exp work on all platforms.

This patch adjusts the testing strategy used in a couple of testcases
where we are trying to print the value of a global variable defined
at multiple locations.  The problem is that the actual value depends
on the platform.  So instead of hard-coding the expected value in
the testcase script, we use local variables (in the inferior) holding
the correct value, and we compare the global variable's value with
the local variable's value.

gdb/testsuite/ChangeLog:

        * gdb.base/ctxobj-f.c (GET_VERSION): Introduce local variable
        and add comment.
        * gdb.base/ctxobj-m.c (main): Rewrite, and add comment.
        * gdb.base/ctxobj.exp: Insert breakpoint in ctxobj-f.c using
        "STOP" marker.  Adjust testing strategy to make it work on
        all targets.

        * gdb.base/print-file-var-main.c (main): Rewrite using local
        variables and adjust get_version_2's return value check.
        Add small comment.
        * gdb.base/print-file-var.exp: Insert breakpoint using "STOP"
        marker.  Adjust testing strategy to make it work on all targets.

stop parsing breakpoint command if invalid keyword found

With an Ada program, trying to break on a specific Ada task, but
with the wrong capitalization of the `task' keyword, we currently
get only pieces of the "garbage" that caused the error:

    (gdb) b *rendez_vous'address TASK 2
    Garbage 2 at end of command

Pushing this a little further:

    (gdb) b *rendez_vous'address TASK Task TaSK 2
    Garbage 2 at end of command

Another interesting failure mode:

    (gdb) b *rendez_vous'address TASK if
    Argument required (expression to compute).

The parser skipped `TASK', then found the `if' keyword, and thus
started looking for a condition.

This patch fixes the problem by aborting the parsing as soon as
an invalid keyword is found.  This makes it consistent with the
case where the REST parameter is passed as NULL (where an error
is raised immediately after seeing the first invalid keyword).

It also introduces a new testcase that reproduces all above scenarios.

gdb/ChangeLog:

        * breakpoint.c (find_condition_and_thread): Stop parsing
        as soon as the first invalid keyword is found.

gdb/testsuite/ChangeLog:

        * gdb.ada/bad-task-bp-keyword: New testcase.

copyright.py: Add gdb/CONTRIBUTE to EXCLUDE_LIST.

Normally, all files should have a copyright header, but gdb/CONTRIBUTE
currently doesn't, and it adding one at the top of the file would
probably be more pollution than information.  So don't require
a copyright header for now.

gdb/ChangeLog:

        * copyright.py (EXCLUDE_LIST): Add 'gdb/CONTRIBUTE' to list.

Add copyright header to config/djgpp/djcheck.sh.

gdb/ChangeLog:

        * config/djgpp/djcheck.sh: Add copyright header.

stubs/ia64vms-stub.c: Fix copyright header.

There is an extra coma after the copyright year which tricks
gnulib's update-copyright script.

gdb/stubs/ChangeLog:

        * ia64vms-stub.c: Adjust copyright header to follow convention
        expected by gnulib's update-copyright script.

copyright.py: Update path to gnulib import.

The location where we store the gnulib import has changed.
This patch updates accordingly the path to gnulib's update-copyright
script.

gdb/ChangeLog:

        * copyright.py (update_files, main): Fix path to update-copyright
        script.

copyright.py: Tell user to update gdb.texinfo and refcard.tex by hand.

gdb/ChangeLog:

        * copyright.py (MULTIPLE_COPYRIGHT_HEADERS): New constant.
        (main): Add MULTIPLE_COPYRIGHT_HEADERS to the list of files
        for which a reminder to update by hand is printed.

* buildsym.c (make_blockvector): Add comment.

*** empty log message ***

daily update

* dynobj.cc (Sized_dynobj::do_get_global_symbol_counts): Call
has_dynsym_index.

2012-06-04  Pedro Alves  <palves@redhat.com>

* arch-utils.c (default_gdb_signal_from_target): Delete.
* arch-utils.h (default_gdb_signal_from_target): Delete.
* corelow.c (core_open) <signal mapping>: Extended comment.  Check
gdbarch_gdb_signal_from_target_p.
* gdbarch.sh (gdb_signal_from_target): Make it an M method (with
predicate).
* gdbarch.h: Regenerate.
* gdbarch.c: Regenerate.

2012-06-04  Pedro Alves  <palves@redhat.com>

* gdbarch.sh (gdb_signal_from_target): Mention that the
implementation of the method must be host independent.
* gdbarch.h: Regenerate.

bfd/
* bfd-in.h (bfd_elf_bfd_from_remote_memory): Make LEN argument
of target_read_memory as bfd_size_type.
* bfd-in2.h: Regenerate.
* elf-bfd.h (elf_backend_bfd_from_remote_memory): Make LEN
argument of target_read_memory as bfd_size_type.
(_bfd_elf32_bfd_from_remote_memory): Likewise.
(_bfd_elf64_bfd_from_remote_memory): Likewise.
* elf.c (bfd_elf_bfd_from_remote_memory): Likewise.
* elfcode.h (NAME(_bfd_elf,bfd_from_remote_memory)): Likewise.

gdb/
* symfile-mem.c: 3 new gdb_static_assert for target_read_memory_bfd
parameters.
(target_read_memory_bfd): New function.
(symbol_file_add_from_memory): Use it.

* symtab.c (lookup_global_symbol_from_objfile): Only scan blockvector
of primary symtab.
(basic_lookup_transparent_type): Ditto.

* objfiles.h (ALL_OBJFILE_PRIMARY_SYMTABS): New macro.
(ALL_PRIMARY_SYMTABS): Use it.
(ALL_PSPACE_PRIMARY_SYMTABS): Ditto.
* dwarf2read.c (dw2_find_symbol_file): Ditto.
* linespec.c (iterate_over_all_matching_symtabs): Ditto.
* symtab.c (lookup_symbol_aux_objfile): Ditto.
(basic_lookup_transparent_type): Ditto.

daily update

*** empty log message ***

gdb/testsuite/
* gdb.base/code_elim.exp
(add-symbol-file ${testfile1} 0x100000)
(add-symbol-file ${testfile2} 0x200000): Wrap them to 'order1' and
'order2'.
(order1: add-symbol-file ${testfile1} 0x100000)
(order1: add-symbol-file ${testfile2} 0x200000)
(order2: add-symbol-file ${testfile2} 0x200000)
(order2: add-symbol-file ${testfile1} 0x100000): Add -s .data and -s
.bss as appropriate.

gdb/testsuite/
* gdb.base/code_elim.exp (add-symbol-file ${testfile1} 0x100000):
Simplify it to ...
(symbol-file ${testfile1}): ... here.
(test eliminated var my_global_symbol)
(test eliminated var my_static_symbol)
(test eliminated var my_global_func, get address of main): Wrap them to
'single psymtabs' and 'single symtabs'
(get address of my_global_symbol, get address of my_static_symbol)
(get address of my_global_func, get address of main): Wrap them to
'order1' and 'order2'.

PR binutils/13897
* elf.c (elf_find_function): Cache last function sym info.
(_bfd_elf_maybe_function_sym): Return function size, pass in
section of interest.
* elf-bfd.h (struct elf_backend_data <maybe_function_sym>): Likewise.
(_bfd_elf_maybe_function_sym): Likewise.
* elf64-ppc.c (ppc64_elf_maybe_function_sym): Likewise.
(opd_entry_value): Add in_code_sec param.  Revert caching code.
Return -1 if in_code_sec and function found in wrong section.
Update all calls.

*** empty log message ***

daily update

gprof/
* Makefile.am (TEXINFO_TEX): Remove $(top_srcdir) prefix.
* Makefile.in: Regenerate.

ld/
* Makefile.am (TEXINFO_TEX): Remove $(top_srcdir) prefix.
* Makefile.in: Regenerate.

2012-06-02  Sergio Durigan Junior  <sergiodj@redhat.com>

* symtab.c (symbol_demangled_name): New variable `dem_name'.  Use
it to optimize resolution of demangled name.

*** empty log message ***

daily update

gdb/
* configure.ac (development): Define new variable.
Call AC_CHECK_LIB for mcheck if $development.
(ERROR_ON_WARNING): Enable it by default only if $development.
* config.in: Regenerate.
* configure: Regenerate.

gdb/gdbserver/
Fix gcc -flto compilation warning.
* server.c (main): Make variable multi_mode and attach volatile.

bfd/
* bfd-in.h (bfd_elf_bfd_from_remote_memory): Make LEN argument
of target_read_memory as size_t.
* bfd-in2.h: Regenerate.
* elf-bfd.h (elf_backend_bfd_from_remote_memory): Make LEN
argument of target_read_memory as size_t.
(_bfd_elf32_bfd_from_remote_memory): Likewise.
(_bfd_elf64_bfd_from_remote_memory): Likewise.
* elf.c (bfd_elf_bfd_from_remote_memory): Likewise.
* elfcode.h (NAME(_bfd_elf,bfd_from_remote_memory)): Likewise.

gdb/
* target.c (target_read_memory): Make LEN argument as size_t.
* target.h (target_read_memory): Likewise.

gdb/
* tilegx-linux-tdep.c (tilegx_l): Use ULL for 64-bit values.

PR binutils/13897
* elf64-ppc.c (opd_entry_value): Rewrite cache code.

Revert the last change

* addr2line.c (translate_addresses): Truncate input addresses to
arch_size bits.  Avoid undefined shift.  Print '?' for zero line.

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daily update

gas/
    * tc-xgate.c (md_begin): Refactored code.

* ppc-linux-nat.c (have_ptrace_booke_interface): Disable ptrace
BookE interface for PowerPC server processors if not available
in the Linux Kernel.

* linespec.c (decode_objc): Add cleanup to free
INFO.FILE_SYMTABS.
(find_linespec_symbols): Add cleanup to free CLASSES.
* symfile.c (find_separate_debug_file_by_debuglink): Add
cleanup to free DEBUGLINK.
* ui-out.c (clear_header_list): No need to check if
HEADER_NEXT.COLHDR is NULL.
Free HEADER_NEXT.COL_NAME.

Move linker test entry to ld/testsuite/ChangeLog

Add missing "foo" after ".global"

2012-05-31  H.J. Lu  <hongjiu.lu@intel.com>

* ld-ifunc/ifunc-13a-x86-64.s: Add missing "foo" after ".global".
* ld-ifunc/ifunc-15-x86-64.s: Likewise.

Fix ChangeLog entry

* gdb/ada-lang.c (standard_lookup): Prevent uninitialized variable
warning.

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* linux-low.c (get_r_debug): Disable code using DT_MIPS_RLD_MAP
if the platform doesn't know about it.

2012-05-30  Jeff Kenton  <jkenton@tilera.com>

* Makefile.in (SFILES): Add linux-tile-low.c.
(linux-tile-low.o, reg-tilegx.o, reg-tilegx.c): New rules.
* configure.srv: Handle tilegx-*-linux*.
* linux-tile-low.c: New file.

2012-05-30  Jeff Kenton  <jkenton@tilera.com>

* configure.host (gdb_host_cpu): Handle tilegx*.
(gdb_host): Handle tilegx-*-linux*.
* tilegx-linux-nat.c: New file.
* config/tilegx/linux.mh: New file.

2012-05-30  Jeff Kenton  <jkenton@tilera.com>

* Makefile.in (ALL_TARGET_OBJS): Add tilegx-tdep.o and
tilegx-linux-tdep.o.
(ALLDEPFILES): Add tilegx-linux-nat.c, tilegx-tdep.c and
tilegx-linux-tdep.c.
* configure.tgt: Handle tilegx-*-linux*.
* tilegx-tdep.h: New file.
* tilegx-tdep.c: New file.
* tilegx-linux-tdep.c: New file.
* regformats/reg-tilegx.dat: New file.

* readelf.c (process_section_headers): Correct bug in previous
delta - display full section type in wide mode.

* ld-tic6x/shlib-1b.rd: Revert previous delta.
* ld-tic6x/shlib-1rb.rd: Likewise.
* ld-tic6x/shlib-1.rd: Likewise.
* ld-tic6x/shlib-1r.rd: Likewise.
* ld-tic6x/shlib-app-1b.rd: Likewise.
* ld-tic6x/shlib-app-1rb.rd: Likewise.
* ld-tic6x/shlib-app-1.rd: Likewise.
* ld-tic6x/shlib-app-1r.rd: Likewise.
* ld-tic6x/shlib-noindex.rd: Likewise.
* ld-tic6x/static-app-1b.rd: Likewise.
* ld-tic6x/static-app-1rb.rd: Likewise.
* ld-tic6x/static-app-1.rd: Likewise.
* ld-tic6x/static-app-1r.rd: Likewise.

* ppc-linux-nat.c (ppc_linux_can_use_hw_breakpoint): fix
accounting of hw watchpoints on ppc.

* ldlang.h (lang_output_section_statement_type): Rename
"section_relative_symbol" field to "update_dot".
* ldlang.c: Update all uses.
(strip_excluded_output_sections): Don't test update_dot_tree here..
(lang_leave_overlay): ..set update_dot here.

* source.c (openp): Expand tilde in path entries.

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daily update

* buildsym.c (block_compar): Fix comment.
(end_symtab): Fix and clarify some comments.

* stabsread.h (cleanup_undefined_stabs_types): Renamed from
cleanup_undefined_types.
* stabsread.c (cleanup_undefined_stabs_types): Ditto.
All callers updated.

gas/
* read.c [HANDLE_BUNDLE] (bundle_lock_depth): New variable.
(read_a_source_file) [HANDLE_BUNDLE]: Reset it.
[HANDLE_BUNDLE] (s_bundle_lock, s_bundle_unlock): Allow nested
pairs.

gas/testsuite/
* gas/i386/bundle-bad.s: Remove nested .bundle_lock case.
* gas/i386/bundle-bad.l: Remove expected error line.
* gas/i386/bundle-lock.s: Add nested .bundle_lock case.
* gas/i386/bundle-lock.d: Update expectations.