target_pass_signals/target_program_signals: Use gdb::array_view

This replaces the pointer and length parameters of target_pass_signals
and target_program_signals with a gdb::array_view parameter, and fixes
the fallout.

In infrun.c, the signal_stop, signal_print, signal_program,
signal_catch, signal_pass globals are currently pointers to
heap-allocated memory.  I see no point in that, so I converted them to
arrays.  This allows simplifying the calls to
target_pass_signals/target_program_signals, since we can pass the
array directly, which can implicitly convert to gdb::array_view.

gdb/ChangeLog:
2019-01-24  Pedro Alves  <palves@redhat.com>

* infrun.c (signal_stop, signal_print, signal_program)
(signal_catch, signal_pass): Now arrays instead of pointers.
(update_signals_program_target, do_target_resume)
(signal_catch_update, handle_command, _initialize_infrun): Adjust.
* linux-nat.c (linux_nat_target::pass_signals)
(linux_nat_target::create_inferior, linux_nat_target::attach):
Adjust.
* linux-nat.h (linux_nat_target::pass_signals): Adjust.
* nto-procfs.c (nto_procfs_target::pass_signals): Adjust.
* procfs.c (procfs_target::pass_signals): Adjust.
* record-full.c (record_full_target::resume): Adjust.
* remote.c (remote_target::pass_signals)
(remote_target::program_signals): Adjust.
* target-debug.h (target_debug_print_signals): Now takes a
gdb::array_view as parameter.  Adjust.
* target.h (target_ops) <pass_signals, program_signals>: Replace
pointer and length parameters with gdb::array_view.
(target_pass_signals, target_program_signals): Likewise.
* target-delegates.c: Regenerate.

Fix clang/libc++ build

This fixes the following build error with clang/libc++, reported at
<https://sourceware.org/ml/gdb-patches/2019-01/msg00537.html>:

  (...)
  In file included from breakpoint.c:34:
  In file included from ./inferior.h:54:
  ./common/forward-scope-exit.h:98:7: error: no matching constructor for
  initialization of 'decltype(std::bind(&delete_longjmp_breakpoint,
  std::declval<int>()))' (aka '__bind<void (*)(int), int>')
      : m_bind_function (std::bind (function, args...))
^                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  ./common/gdb_optional.h:155:19: note: in instantiation of member
  function 'detail::forward_scope_exit<void (int),
  &delete_longjmp_breakpoint, void (int)>::forward_scope_exit' requested
  here
      new (&m_item) T (std::forward<Args>(args)...);
    ^
  breakpoint.c:11127:18: note: in instantiation of function template
  specialization 'gdb::optional<detail::forward_scope_exit<void (int),
  &delete_longjmp_breakpoint, void (int)> >::emplace<int &>' requested
  here
lj_deleter.emplace (thread);
   ^
  /Applications/Xcode-10.1.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/functional:2220:7:
  note: candidate constructor (the implicit copy constructor) not
  viable: no known conversion from '__bind<[...], int &>' to 'const
  __bind<[...], int>' for 1st argument
  class __bind
^
  (...)

I don't really know why I ended up with a copy here.  We can just pass
the arguments directly to the being-constructed bind.

gdb/ChangeLog:
2019-01-24  Pedro Alves  <palves@redhat.com>

* common/forward-scope-exit.h
(forward_scope_exit::forward_scope_exit): Pass arguments to
m_bind_function directly, instead of creating a std::bind and
copying that.

AArch64 AAPCS: Ignore static members

Static members in C++ structs are global data and therefore not part of the
list of struct members considered for passing in registers.

Note the corresponding code in GCC (from which the GDB AAPCS code is based)
does not have any static member checks due to the static members not being
part of the struct type at that point.

Extend gdb.base/infcall-nested-structs.exp to test structs with static
members when compiled for C++.  XFAIL more cases for x86_64 (see gdb/24104).
For completeness, ensure some test cases have both empty structures and
static members.

Also fixes gdb.dwarf2/dw2-cp-infcall-ref-static.exp.

gdb/ChangeLog:

* aarch64-tdep.c (aapcs_is_vfp_call_or_return_candidate_1): Check
for static members.
(pass_in_v_vfp_candidate): Likewise.

gdb/testsuite/ChangeLog:

* gdb.base/infcall-nested-structs.c (struct struct_static_02_01):
New structure.
(struct struct_static_02_02): Likewise.
(struct struct_static_02_03): Likewise.
(struct struct_static_02_04): Likewise.
(struct struct_static_04_01): Likewise.
(struct struct_static_04_02): Likewise.
(struct struct_static_04_03): Likewise.
(struct struct_static_04_04): Likewise.
(struct struct_static_06_01): Likewise.
(struct struct_static_06_02): Likewise.
(struct struct_static_06_03): Likewise.
(struct struct_static_06_04): Likewise.
(cmp_struct_static_02_01): Likewise.
(cmp_struct_static_02_02): Likewise.
(cmp_struct_static_02_03): Likewise.
(cmp_struct_static_02_04): Likewise.
(cmp_struct_static_04_01): Likewise.
(cmp_struct_static_04_02): Likewise.
(cmp_struct_static_04_03): Likewise.
(cmp_struct_static_04_04): Likewise.
(cmp_struct_static_06_01): Likewise.
(cmp_struct_static_06_02): Likewise.
(cmp_struct_static_06_03): Likewise.
(cmp_struct_static_06_04): Likewise.
(call_all): Test new structs.
* gdb.base/infcall-nested-structs.exp: Likewise.

Automatic date update in version.in

Use scope_exit in regcache.c

This removes the regcache_invalidator class in favor of a scope_exit.
This seems like an improvement (albeit a minor one) because
regcache_invalidator is only used in a single spot.

gdb/ChangeLog:
2019-01-23  Tom Tromey  <tom@tromey.com>
    Pedro Alves  <palves@redhat.com>

* regcache.c (class regcache_invalidator): Remove.
(regcache::raw_write): Use make_scope_exit.

Update cleanup comment in ui-out.h

ui-out.h refers to some cleanup functions that no longer exist.  This
updates the reference.

gdb/ChangeLog:
2019-01-23  Tom Tromey  <tom@tromey.com>

* ui-out.h (class ui_out_emit_type): Update comment.

Update an obsolete cleanup comment

This updates a comment in fetch_inferior_event.  The comment refers to
a cleanup that is now a scoped_restore_current_thread.

gdb/ChangeLog:
2019-01-23  Tom Tromey  <tom@tromey.com>

* infrun.c (fetch_inferior_event): Update comment.

Remove remaining cleanup from fetch_inferior_event

This removes the remaining cleanup from fetch_inferior_event,
replacing it with a SCOPE_EXIT.  This required introducing a new scope
and reindenting.

gdb/ChangeLog:
2019-01-23  Tom Tromey  <tom@tromey.com>
    Pedro Alves  <palves@redhat.com>

* infrun.c (reinstall_readline_callback_handler_cleanup): Remove
parameter.
(fetch_inferior_event): Use SCOPE_EXIT.

Remove cleanup from stop_all_threads

This removes the cleanup from stop_all_threads, replacing it with a
scope_exit.

gdb/ChangeLog:
2019-01-23  Tom Tromey  <tom@tromey.com>
    Pedro Alves  <palves@redhat.com>

* infrun.c (disable_thread_events): Delete.
(stop_all_threads): Use SCOPE_EXIT.

Remove clear_symtab_users_cleanup

This removes clear_symtab_users_cleanup, replacing it with uses of
forward_scope_exit.

gdb/ChangeLog:
2019-01-23  Tom Tromey  <tom@tromey.com>
    Pedro Alves  <palves@redhat.com>

* symfile.c: Include forward-scope-exit.h.
(clear_symtab_users_cleanup): Replace forward declaration with
a FORWARD_SCOPE_EXIT.
(syms_from_objfile_1): Use the forward_scope_exit and
gdb::optional instead of cleanup_function.
(reread_symbols): Use the forward_scope_exit instead of
cleanup_function.
(clear_symtab_users_cleanup): Remove function.

Remove cleanup from linux-nat.c

This removes a cleanup from linux-nat.c, replacing it with a
scope_exit.

gdb/ChangeLog:
2019-01-23  Tom Tromey  <tom@tromey.com>
    Pedro Alves  <palves@redhat.com>

* linux-nat.c: Include scope-exit.h.
(cleanup_target_stop): Remove.
(linux_nat_target::static_tracepoint_markers_by_strid): Use
SCOPE_EXIT.

Remove cleanup_delete_std_terminate_breakpoint

This removes cleanup_delete_std_terminate_breakpoint, replacing it
with a use of SCOPE_EXIT.

gdb/ChangeLog:
2019-01-23  Tom Tromey  <tom@tromey.com>
    Pedro Alves  <palves@redhat.com>

* infcall.c (cleanup_delete_std_terminate_breakpoint): Remove.
(call_function_by_hand_dummy): Use SCOPE_EXIT.

Remove make_bpstat_clear_actions_cleanup

This removes make_bpstat_clear_actions_cleanup, replacing it with uses
of scope_exit.

gdb/ChangeLog:
2019-01-23  Tom Tromey  <tom@tromey.com>
    Andrew Burgess  <andrew.burgess@embecosm.com>
    Pedro Alves  <palves@redhat.com>

* infrun.c (fetch_inferior_event): Use scope_exit.
* utils.h (make_bpstat_clear_actions_cleanup): Don't declare.
* top.c (execute_command): Use scope_exit.
* breakpoint.c (bpstat_do_actions): Use scope_exit.
* utils.c (do_bpstat_clear_actions_cleanup)
(make_bpstat_clear_actions_cleanup): Remove.

Remove delete_just_stopped_threads_infrun_breakpoints_cleanup

v3: sorted earlier in the series, and replaces the cleanup in
fetch_inferior_event here too instead of in some other patch.

This removes delete_just_stopped_threads_infrun_breakpoints_cleanup,
replacing it with uses of scope_exit.

gdb/ChangeLog:
2019-01-23  Tom Tromey  <tom@tromey.com>
    Pedro Alves  <palves@redhat.com>

* infrun.c: Include "common/scope-exit.h"
(delete_just_stopped_threads_infrun_breakpoints_cleanup): Remove.
(wait_for_inferior): Use SCOPE_EXIT.
(fetch_inferior_event): Use scope_exit.

Remove remaining cleanup from gdb/breakpoint.c

In v3: remove the "have BKPT_CHAIN already discarded" comment too.

The remaining null cleanup in breakpoint.c does not seem to protect
anything, so remove it.

gdb/ChangeLog:
2019-01-23  Tom Tromey  <tom@tromey.com>
    Pedro Alves  <palves@redhat.com>

* breakpoint.c (create_breakpoint): Remove cleanup.

Replace delete_longjmp_breakpoint_cleanup with a forward_scope_exit type

This removes delete_longjmp_breakpoint_cleanup in favor of forward_scope_exit.

gdb/ChangeLog:
2019-01-23  Tom Tromey  <tom@tromey.com>
    Andrew Burgess  <andrew.burgess@embecosm.com>
    Pedro Alves  <palves@redhat.com>

* breakpoint.c (until_break_command): Use
delete_longjmp_breakpoint_cleanup class.
* infcmd.c (delete_longjmp_breakpoint_cleanup): Remove function.
(until_next_command): Use delete_longjmp_breakpoint_cleanup class.
* inferior.h: Include forward-scope-exit.h.
(delete_longjmp_breakpoint_cleanup): Replace function declaration
with FORWARD_SCOPE_EXIT type.

Use SCOPE_EXIT in gdbarch-selftest.c

Replace the custom local class with a SCOPE_EXIT.

gdb/ChangeLog:
2019-01-23  Pedro Alves  <palves@redhat.com>

* gdbarch-selftests.c (struct on_exit): Use SCOPE_EXIT.

Use forward_scope_exit for scoped_finish_thread_state

This reimplements the manually-written scoped_finish_thread_state
class as a forward_scope_exit instantiation.  forward_scope_exit has
the same interface as scoped_finish_thread_state, so nothing else has
to change.

A forward_scope_exit is preferred over make_scope_exit here because
infrun.c:normal_stop needs to wrap scoped_finish_thread_state in a
gdb::optional.  Since we need the type there, might as well use it
everywhere.

gdb/ChangeLog:
2019-01-23  Pedro Alves  <palves@redhat.com>
    Andrew Burgess  <andrew.burgess@embecosm.com>

* gdbthread.h: Include "common/forward-scope-exit.h".
(scoped_finish_thread_state): Redefine custom class in terms of
forward_scope_exit.

Introduce forward_scope_exit

This adds a template that can be used to automatically instantiate
scope_exit-like types that wrap some cleanup function.  The
instantiated type has a ctor that has the same interface as the
wrapped function.  While the "magic" is just straight C++11, the
intended use is via the FORWARD_SCOPE_EXIT macro, which is a minimal
macro that avoids spelling out the wrapped function name more than
once:

 void some_function (int foo, object *bar);
 using some_function_fce = FORWARD_SCOPE_EXIT (some_function);
 some_function_fce cleanup (some_int, some_obj_ptr);

The above runs:
  some_function (some_int, some_obj_ptr);
at scope exit.

This is mainly useful as opposed to a simpler SCOPE_EXIT when you need
to:
  - cancel the scope_exit, in which case you need the object's name
  - wrap the scope_exit in a gdb::optional, in which case you need the
    scope_exit's type in advance.

More details in the code comments.

gdb/ChangeLog:
2019-01-23  Pedro Alves  <palves@redhat.com>
    Andrew Burgess  <andrew.burgess@embecosm.com>

* common/forward-scope-exit.h: New file.

Introduce scope_exit

This add a new template class scope_exit.  scope_exit is a
general-purpose scope guard that calls its exit function at the end of
the current scope.  A scope_exit may be canceled by calling the
"release" method.  The API is modeled on P0052R5 - Generic Scope Guard
and RAII Wrapper for the Standard Library, which is itself based on
Andrej Alexandrescu's ScopeGuard/SCOPE_EXIT.

The main advantage of scope_exit is avoiding writing single-use RAII
classes and its boilerplate.  Following patches will remove a few of
such classes.

There are two forms available:

 - The "make_scope_exit" form allows canceling the scope guard.  Use
   it like this:

     auto cleanup = make_scope_exit ( <function, function object, lambda> );
     ...
     cleanup.release (); // cancel

 - If you don't need to cancel the guard, you can use the SCOPE_EXIT
   macro, like this:

     SCOPE_EXIT { /* any code you like here. */ }

Note: scope_exit instances do not allocate anything on the heap.

gdb/ChangeLog:
2019-01-23  Pedro Alves  <palves@redhat.com>
    Andrew Burgess  <andrew.burgess@embecosm.com>
    Tom Tromey  <tom@tromey.com>

* common/scope-exit.h: New file.

Rename ESC -> ESC_PARENS

A following patch will include common/preprocessor.h in some .c file
that also includes readline.h, and that revealed a conflict -- ESC is
defined by readline.h as well (actually readline's chardefs.h) with a
completely unrelated meaning:

 #define ESC CTRL('[')

Rename our version to avoid the conflict.

gdb/ChangeLog:
2019-01-23  Pedro Alves  <palves@redhat.com>

* common/preprocessor.h (ESC): Rename to ...
(ESC_PARENS): ... this.
* common/valid-expr.h (CHECK_VALID_EXPR_1, CHECK_VALID_EXPR_2)
(CHECK_VALID_EXPR_3, CHECK_VALID_EXPR_4): Adjust.

Remove a warning from symtab.c

When building symtab.c, I get:

../../binutils-gdb/gdb/language.h: In function ‘void print_symbol_info(search_domain, symbol*, int, const char*)’:
../../binutils-gdb/gdb/language.h:738:20: warning: ‘*((void*)& l +4)’ may be used uninitialized in this function [-Wmaybe-uninitialized]
       set_language (m_lang);
       ~~~~~~~~~~~~~^~~~~~~~
../../binutils-gdb/gdb/symtab.c:4613:41: note: ‘*((void*)& l +4)’ was declared here
   scoped_switch_to_sym_language_if_auto l (sym);
                                         ^

This is another instance of the std::optional problem, see
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80635.

However, it seemed straightforward and inexpensive to me to silence
this one, which is what this patch does.

gdb/ChangeLog
2019-01-23  Tom Tromey  <tom@tromey.com>

* language.h (class scoped_switch_to_sym_language_if_auto):
Initialize m_lang in both cases.

AArch64: Ensure lwp info is created zeroed

The code to not set empty hardware BPs/WPs on new threads will only work
if the newly allocated struct is empty.

Ensure the structure is created zeroed.

This patch removes the remaining racy behaviour on gdb.threads tests
when run on AArch64 Ubuntu.

gdb/ChangeLog:

* nat/aarch64-linux.c (aarch64_linux_new_thread): Replace XNEW
with XCNEW.

Updated translations for some of the binutils subdirectory.

ld: Add LTO warning to --wrap documentation

ld/

* ld.texi (--wrap): Add warning that LTO may make this feature
ineffective.

corelow.c does not need sys/file.h

I did not see any reason that corelow.c should include <sys/file.h>.
The provided explanatory comment seems to be wrong.  This patch
removes the include.

2019-01-22  Tom Tromey  <tom@tromey.com>

* corelow.c: Do not include sys/file.h.

Include coff/sym.h from coff/ecoff.h

coff/ecoff.h refers to some names defined in coff/sym.h.  Include the
latter from the former, so that users of the header don't need to know
this detail.

2019-01-22  Tom Tromey  <tom@tromey.com>

* coff/ecoff.h: Include coff/sym.h.

Include gdb_curses.h in tui-wingeneral.h

tui-wingeneral.h uses WINDOW, which is defined by curses.  So, include
gdb_curses.h from tui-wingeneral.h.

2019-01-22  Tom Tromey  <tom@tromey.com>

* tui/tui-wingeneral.h: Include gdb_curses.h.

Rename "lines" parameter in source-cache.h

A compile in the TUI somehow had "lines" defined as a macro.  This
caused a compile error when including source-cache.h after whatever
header did that.  I tracked this down to a #define in
/usr/include/term.h, so I just changed source-cache.h to avoid the
clash.

gdb/ChangeLog
2019-01-22  Tom Tromey  <tom@tromey.com>

* source-cache.h (class source_cache) <get_source_lines,
get_plain_source_lines, extract_lines>: Rename "lines" parameter.

Declare remote_target in remote-fileio.h

remote-fileio.h refers to remote_target, so forward-declare it.

gdb/ChangeLog
2019-01-22  Tom Tromey  <tom@tromey.com>

* remote-fileio.h (struct remote_target): Declare.

Do not include py-ref.h in most files

py-ref.h can really only be included from a specific spot in
python-internal.h.  The other includes are not useful, and cause
compilation errors if the includes are ever sorted.  So, remove these
includes.

Arguably, py-ref.h should simply not be a separate header.

gdb/ChangeLog
2019-01-22  Tom Tromey  <tom@tromey.com>

* python/py-arch.c: Do not include py-ref.h.
* python/py-bpevent.c: Do not include py-ref.h.
* python/py-cmd.c: Do not include py-ref.h.
* python/py-continueevent.c: Do not include py-ref.h.
* python/py-event.h: Do not include py-ref.h.
* python/py-evtregistry.c: Do not include py-ref.h.
* python/py-finishbreakpoint.c: Do not include py-ref.h.
* python/py-frame.c: Do not include py-ref.h.
* python/py-framefilter.c: Do not include py-ref.h.
* python/py-function.c: Do not include py-ref.h.
* python/py-infevents.c: Do not include py-ref.h.
* python/py-linetable.c: Do not include py-ref.h.
* python/py-objfile.c: Do not include py-ref.h.
* python/py-param.c: Do not include py-ref.h.
* python/py-prettyprint.c: Do not include py-ref.h.
* python/py-progspace.c: Do not include py-ref.h.
* python/py-symbol.c: Do not include py-ref.h.
* python/py-symtab.c: Do not include py-ref.h.
* python/py-type.c: Do not include py-ref.h.
* python/py-unwind.c: Do not include py-ref.h.
* python/py-utils.c: Do not include py-ref.h.
* python/py-value.c: Do not include py-ref.h.
* python/py-varobj.c: Do not include py-ref.h.
* python/py-xmethods.c: Do not include py-ref.h.
* python/python.c: Do not include py-ref.h.
* varobj.c: Do not include py-ref.h.

Use "struct bcache" in objfiles.h

If objfiles.h is included after bcache.h, then the "bcache" function
will cause a compiler error because "bcache" will be seen as a
function, not a type.  Fix this error by using the "struct" keyword.

gdb/ChangeLog
2019-01-22  Tom Tromey  <tom@tromey.com>

* objfiles.h (struct objfile_per_bfd_storage): Use "struct"
keyword for bcache.

Remove a comment in compile/compile-cplus-types.c

The include sorter can't handle multi-line comments on the same line
as a #include.  This patch removes the only such comment.

In general I think these sorts of comments do not provide much value:
more often than not, I find that the comment is obsolete in one way or
another, and so the include sorter removes them in most cases.

gdb/ChangeLog
2019-01-22  Tom Tromey  <tom@tromey.com>

* compile/compile-cplus-types.c: Remove a comment by #include.

Include compile-internal.h in gcc-c-plugin.h

gcc-c-plugin.h refers to some types defined in compile-internal.h.
This patch changes the former to include the latter.

gdb/ChangeLog
2019-01-22  Tom Tromey  <tom@tromey.com>

* compile/gcc-c-plugin.h: Include compile-internal.h.

Automatic date update in version.in

Remove the EXTERN define from stabsread.h

This removes the EXTERN define from stabsread.h.  This is the only
spot that still uses this approach, and it interfered with sorting the
includes in stabsread.c.

Tested by rebuilding.

gdb/ChangeLog
2019-01-22  Tom Tromey  <tom@tromey.com>

* stabsread.c (EXTERN): Do not define.
(symnum, next_symbol_text_func, processing_gcc_compilation)
(within_function, global_sym_chain, global_stabs)
(previous_stab_code, this_object_header_files)
(n_this_object_header_files)
(n_allocated_this_object_header_files): Define.
* stabsread.h (EXTERN): Never define.  Use "extern".

Automatic date update in version.in

Fix leak in event-top.c history expansion

E.g. in gdb.base/default.exp, valgrind detects leaks such as
==17663== 1,438 bytes in 101 blocks are definitely lost in loss record 2,804 of 2,884
==17663==    at 0x4C2BE6D: malloc (vg_replace_malloc.c:309)
==17663==    by 0x418A17: xmalloc (common-utils.c:44)
==17663==    by 0x4E6F19C: history_expand (histexpand.c:1061)
==17663==    by 0x4B4490: handle_line_of_input(buffer*, char const*, int, char const*) (event-top.c:685)
==17663==    by 0x4B4562: command_line_handler(std::unique_ptr<char, gdb::xfree_deleter<char> >&&) (event-top.c:753)
...

Fix the leak by using an unique_xmalloc_ptr for history_value.

gdb/ChangeLog
2019-01-22  Philippe Waroquiers  <philippe.waroquiers@skynet.be>

* event-top.c (handle_line_of_input): use unique_xmalloc_ptr for
history_value.

Remove duplicate or commented-out #includes

I wrote a little script to detect duplicate or commented-out #includes
and ran it on gdb.  This patch is the result.  Tested by rebuilding.

gdb/ChangeLog
2019-01-21  Tom Tromey  <tom@tromey.com>

* ui-out.c: Fix includes.
* tui/tui-source.c: Fix includes.
* target.c: Fix includes.
* remote.c: Fix includes.
* regcache.c: Fix includes.
* python/py-block.c: Fix includes.
* printcmd.c: Fix includes.
* or1k-tdep.c: Fix includes.
* mi/mi-main.c: Fix includes.
* m32r-tdep.c: Fix includes.
* csky-tdep.c: Fix includes.
* compile/compile-cplus-types.c: Fix includes.
* cli/cli-interp.c: Fix includes.

gdb/gdbserver/ChangeLog
2019-01-21  Tom Tromey  <tom@tromey.com>

* tracepoint.c: Fix includes.
* remote-utils.c: Fix includes.
* linux-x86-low.c: Fix includes.

gdb/stubs/ChangeLog
2019-01-21  Tom Tromey  <tom@tromey.com>

* ia64vms-stub.c: Fix includes.

Fix leak in splay-tree

Philippe Waroquiers noticed a memory leak in gdb, which he tracked
down to a bug in splay-tree.  splay_tree_remove does not call the
`delete_key' function when it removes the old node; but it should.

I looked at every splay tree in GCC and there is only one that passes
a non-NULL delete function -- the one in lto.c.  That file does not
call splay_tree_remove.  So, I think this is safe to check in.

I re-ran the LTO tests to double check.

libiberty/
* splay-tree.c (splay_tree_remove): Delete the key if necessary.

AArch64 AAPCS: Empty structs have non zero size in C++

When gdb.base/infcall-nested-structs.c is complied as C++, the compiler
will not pass structs containing empty structs via float arguments.
This is because structs in C++ have a minimum size of 1, causing padding
in the struct once compiled.  The AAPCS does not allow structs with
padding to be passed in float arguments.

Add padding checks to AArch64 and add C++ compile variant to the test.

Some of the tests fail on X86_64. This has been raised as bug gdb/24104.

gdb/ChangeLog:

* aarch64-tdep.c (aapcs_is_vfp_call_or_return_candidate_1): Check
for padding.

gdb/testsuite/ChangeLog:

* gdb.base/infcall-nested-structs.exp: Test C++ in addition to C.

Updated Brazilian Portuguese translation for the ld/ subdirectory.

Updated translations for various binutils subdirectories.

Fix spelling mistakes in BFD library.

PR 24108
bfd * elf32-nds32.c (nds32_relocate_section): Add space between words
in error message.
* elfnn-riscv.c (riscv_version_mismatch): Fix spelling mistake in
error message.
(riscv_i_or_e_p): Likewise.
(riscv_merge_arch_attr_info): Likewise.

ld * testsuite/ld-riscv-elf/attr-merge-arch-failed-01.d: Update
expected error message.

Testsuite: Ensure stack protection is off for GCC

Using -fstack-protector-strong will cause GDB to break on the wrong line
when placing a breakpoint on a function.  This is due to inadequate dwarf
line numbering, and is being tracked by the GCC bug
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88432

GCC (and Clang) provided by Debian/Ubuntu default to stack protector
being enabled.

Ensure that when running the GDB testsuite, stack protector is always
turned off for GCC 4.1.0 (when stack protector was added) and above.

Ensure that this does not cause infinite recursion due to
test_compiler_info having to compile a file itself.

Add a test to explicitly test breakpoints with various levels of stack
protection on both GCC and Clang, with xfail for the known errors.

Restore change in ovldbreak.exp which worked around the issue.

gdb/testsuite/ChangeLog:

2019-01-18  Alan Hayward  <alan.hayward@arm.com>

* gdb.base/stack-protector.c: New test.
* gdb.base/stack-protector.exp: New file.
* gdb.cp/ovldbreak.exp: Only allow a single break line.
* lib/gdb.exp (get_compiler_info): Use getting_compiler_info
option.
(gdb_compile): Remove stack protector for GCC and prevent
recursion.

Automatic date update in version.in

[MIPS] fix typo in mips_arch_choices.

opcodes/
* mips-dis.c (mips_arch_choices): Fix typo in
gs464, gs464e and gs264e descriptors.

Automatic date update in version.in

Change version to 2.32.51 and regenerate configure and pot files.

Add markers for 2.32 branch to NEWS and ChangeLog files.

Automatic date update in version.in

Automatic date update in version.in

Make minimal symbol range adapter a method on objfile

This removes class objfile_msymbols in favor of a method on the
objfile.

2019-01-16  Tom Tromey  <tom@tromey.com>

* objfiles.h (struct minimal_symbol_iterator): Rename.  Move
earlier.
(struct objfile) <msymbols_range>: Move from top level.
<msymbols>: New method.
(class objfile_msymbols): Remove.
* symtab.c (default_collect_symbol_completion_matches_break_on):
Update.
* symmisc.c (dump_msymbols): Update.
* stabsread.c (scan_file_globals): Update.
* objc-lang.c (info_selectors_command, info_classes_command)
(find_methods): Update.
* minsyms.c (find_solib_trampoline_target): Update.
* hppa-tdep.c (hppa_lookup_stub_minimal_symbol): Update.
* coffread.c (coff_symfile_read): Update.
* ada-lang.c (ada_lookup_simple_minsym)
(ada_collect_symbol_completion_matches): Update.

Simplify minsym iteration

This simplifies the minimal symbol iterator, by using
minimal_symbol_count and just doing a somewhat ordinary array-like
iteration.  array_view is nearly usable, except that it is more
convenient for this iterator to return pointers rather than
references.

gdb/ChangeLog
2019-01-16  Tom Tromey  <tom@tromey.com>

* objfiles.h (class objfile_msymbols) <iterator>: Change argument
type.  Remove no-argument constructor.
<iterator::operator++>: Simplify.
<begin>: Update.
<end>: Use minimal_symbol_count.

Make psymtab range adapter a method on objfile

This removes the objfile_psymtabs class in favor of a method on
objfile and on psymtab_storage.

2019-01-16  Tom Tromey  <tom@tromey.com>

* objfiles.h (struct objfile) <psymtabs>: New method.
(class objfile_psymtabs): Remove.
* psymtab.h (class psymtab_storage) <partial_symtab_range>: New
typedef.
<range>: New method.
(require_partial_symbols): Change return type.
* psymtab.c (require_partial_symbols)
(psym_expand_symtabs_matching): Update.
* mdebugread.c (parse_partial_symbols): Update.
* dbxread.c (dbx_end_psymtab): Update.

Add compunits range adapter to objfile

This removes the objfile_compunits range adapter in favor of using a
method on objfile.

2019-01-15  Tom Tromey  <tom@tromey.com>

* symtab.c (lookup_objfile_from_block)
(lookup_symbol_in_objfile_symtabs)
(basic_lookup_transparent_type_1, find_pc_sect_compunit_symtab)
(find_line_symtab, info_sources_command)
(default_collect_symbol_completion_matches_break_on)
(make_source_files_completion_list): Update.
* symmisc.c (print_objfile_statistics, dump_objfile)
(maintenance_print_symbols, maintenance_info_symtabs)
(maintenance_check_symtabs, maintenance_info_line_tables):
Update.
* source.c (select_source_symtab)
(forget_cached_source_info_for_objfile): Update.
* objfiles.h (class objfile_compunits): Remove.
(struct objfile) <compunits_range>: New typedef.
(compunits): New method.
* objfiles.c (objfile_relocate1): Update.
* mi/mi-cmd-file.c (mi_cmd_file_list_exec_source_files): Update.
* maint.c (count_symtabs_and_blocks): Update.
* linespec.c (iterate_over_all_matching_symtabs): Update.
* cp-support.c (add_symbol_overload_list_qualified): Update.
* coffread.c (coff_symtab_read): Update.
* ada-lang.c (add_nonlocal_symbols)
(ada_collect_symbol_completion_matches)
(ada_add_global_exceptions): Update.

Change all_objfiles_safe adapter to be a method on program_space

This changes the all_objfiles_safe range adapter to be a method on the
program space, and fixes up all the users.

gdb/ChangeLog
2019-01-15  Tom Tromey  <tom@tromey.com>

* progspace.h (program_space) <objfiles_safe_range>: New
typedef.
<objfiles_safe>: New method.
* objfiles.h (class all_objfiles_safe): Remove.
* objfiles.c (free_all_objfiles, objfile_purge_solibs): Update.
* jit.c (jit_inferior_exit_hook): Update.

Change all_objfiles adapter to be a method on program_space

This changes the all_objfiles range adapter to be a method on the
program space, and fixes up all the users.

gdb/ChangeLog
2019-01-17  Tom Tromey  <tom@tromey.com>

* progspace.h (program_space) <objfiles_range>: New typedef.
<objfiles>: New method.
<objfiles_head>: Rename from objfiles.
(object_files): Update.
* guile/scm-progspace.c (gdbscm_progspace_objfiles): Update.
* guile/scm-pretty-print.c
(ppscm_find_pretty_printer_from_objfiles): Update.
* guile/scm-objfile.c (gdbscm_objfiles): Update.
* python/py-xmethods.c (gdbpy_get_matching_xmethod_workers):
Update.
* python/py-progspace.c (pspy_get_objfiles): Update.
* python/py-prettyprint.c (find_pretty_printer_from_objfiles):
Update.
* python/py-objfile.c (objfpy_lookup_objfile_by_name)
(objfpy_lookup_objfile_by_build_id): Update.
* mi/mi-cmd-file.c (mi_cmd_file_list_exec_source_files): Update.
* windows-tdep.c (windows_iterate_over_objfiles_in_search_order):
Update.
* symtab.c (iterate_over_symtabs, matching_obj_sections)
(expand_symtab_containing_pc, lookup_objfile_from_block)
(lookup_static_symbol, basic_lookup_transparent_type)
(find_pc_sect_compunit_symtab, find_symbol_at_address)
(find_line_symtab, info_sources_command)
(default_collect_symbol_completion_matches_break_on)
(make_source_files_completion_list, find_main_name): Update.
* symmisc.c (print_symbol_bcache_statistics)
(print_objfile_statistics, maintenance_print_symbols)
(maintenance_print_msymbols, maintenance_print_objfiles)
(maintenance_info_symtabs, maintenance_check_symtabs)
(maintenance_expand_symtabs, maintenance_info_line_tables):
Update.
* symfile.c (remove_symbol_file_command, overlay_invalidate_all)
(find_pc_overlay, find_pc_mapped_section, list_overlays_command)
(map_overlay_command, unmap_overlay_command)
(simple_overlay_update, expand_symtabs_matching)
(map_symbol_filenames): Update.
* symfile-debug.c (set_debug_symfile): Update.
* spu-tdep.c (spu_overlay_update, spu_objfile_from_frame):
Update.
* source.c (select_source_symtab, forget_cached_source_info):
Update.
* solib.c (solib_read_symbols): Update.
* solib-spu.c (append_ocl_sos): Update.
* psymtab.c (maintenance_print_psymbols)
(maintenance_info_psymtabs, maintenance_check_psymtabs): Update.
* probe.c (parse_probes_in_pspace, find_probe_by_pc): Update.
* printcmd.c (info_symbol_command): Update.
* ppc-linux-tdep.c (ppc_linux_spe_context_inferior_created):
Update.
* objfiles.h (class all_objfiles): Remove.
* objfiles.c (have_partial_symbols, have_full_symbols)
(have_minimal_symbols, qsort_cmp, update_section_map)
(shared_objfile_contains_address_p)
(default_iterate_over_objfiles_in_search_order): Update.
* objc-lang.c (info_selectors_command, info_classes_command)
(find_methods): Update.
* minsyms.c (find_solib_trampoline_target): Update.
* maint.c (maintenance_info_sections)
(maintenance_translate_address, count_symtabs_and_blocks):
Update.
* main.c (captured_main_1): Update.
* linux-thread-db.c (try_thread_db_load_from_pdir)
(has_libpthread): Update.
* linespec.c (iterate_over_all_matching_symtabs)
(search_minsyms_for_name): Update.
* jit.c (jit_find_objf_with_entry_addr): Update.
* hppa-tdep.c (find_unwind_entry)
(hppa_lookup_stub_minimal_symbol): Update.
* gcore.c (gcore_create_callback, objfile_find_memory_regions):
Update.
* elfread.c (elf_gnu_ifunc_resolve_by_cache)
(elf_gnu_ifunc_resolve_by_got): Update.
* dwarf2-frame.c (dwarf2_frame_find_fde): Update.
* dwarf-index-write.c (save_gdb_index_command): Update.
* cp-support.c (add_symbol_overload_list_qualified): Update.
* breakpoint.c (create_overlay_event_breakpoint)
(create_longjmp_master_breakpoint)
(create_std_terminate_master_breakpoint)
(create_exception_master_breakpoint): Update.
* blockframe.c (find_pc_partial_function): Update.
* ada-lang.c (ada_lookup_simple_minsym, add_nonlocal_symbols)
(ada_collect_symbol_completion_matches)
(ada_add_global_exceptions): Update.

Remove cleanups from solib-target.c

This removes the remaining cleanups from solib-target.c, plus a VEC,
by using std::vector and std::unique_ptr.

Tested by the buildbot.

gdb/ChangeLog
2019-01-17  Tom Tromey  <tom@tromey.com>

* solib-target.c (lm_info_target_p): Remove typedef.  Don't
declare VEC.
(solib_target_parse_libraries): Change return type.
(library_list_start_segment, library_list_start_section)
(library_list_end_library, library_list_start_library); Update.
(solib_target_free_library_list): Remove.
(solib_target_parse_libraries): Remove cleanup.  Change return
type.
(solib_target_current_sos): Update.

Replace "the the" with "the"

This replaces "the the" with "the" in various comments.

Tested by rebuilding.  This didn't test the solib-dsbt.c change, but
it looks harmless.

gdb/ChangeLog
2019-01-17  Tom Tromey  <tromey@bapiya>

* valprint.c: Replace "the the" with "the".
* symtab.c: Replace "the the" with "the".
* solib.c: Replace "the the" with "the".
* solib-dsbt.c: Replace "the the" with "the".
* linespec.c: Replace "the the" with "the".
* dwarf2loc.h: Replace "the the" with "the".
* amd64-windows-tdep.c: Replace "the the" with "the".
* aarch64-tdep.c: Replace "the the" with "the".

Arm: Clean up PE GAS testsuite correct THUMB tests.

The PE targets don't support mapping symbols and so the disassembler is unable
to correctly output thumb instructions when the input was thumb.

So for testcases that only have thumb output, I have copied them and skipped the
ones for which auto-detection is supposed to work on PE, and added a new one
that will force thumb output.  This so that the tests still check the mapping
symbols.

For the tests that switch between thumb and arm in one file I just skip them
entirely on PE targets.

This cleans up the PE GAS testsuite.

gas/

* testsuite/gas/arm/archv6t2-1-pe.d: New test.
* testsuite/gas/arm/archv6t2-1.d: Skip pe.
* testsuite/gas/arm/csdb.d: Skip pe.
* testsuite/gas/arm/sb-thumb1-pe.d: New test.
* testsuite/gas/arm/sb-thumb1.d: Skip pe.
* testsuite/gas/arm/sb-thumb2-pe.d: New test.
* testsuite/gas/arm/sb-thumb2.d: Skip pe.
* testsuite/gas/arm/udf.d: Skip pe.

Update objdump's --disassemble=<symbol> feature so that if <symbol> is a function, the entire function will be disassembled, regardless of the presence of interveening symbols.

* objdump.c (disassemble_section): When disassembling from a
symbol only stop at the next symbol if the original symbol was not
a function symbol.  Otherwise continue disassembling until a new
function is reached.
* testsuite/binutils-all/objdump.exp: Add tests of extended
functionality.
* testsuite/binutils-all/disasm.s: New test source file.

Automatic date update in version.in

Actually remove definitions of DEFINE_NON_INLINE_P and DEFINE_INLINE_P

I applied the patch "Do not expand macros to 'defined'" by hand because
I couldn't apply it with git-am, and of course forgot to remove the
macro definitions.  This patch fixes it, and also makes the ChangeLog
entry a bit cleaner.

Don't emit vendor attribute section if there is no attribute to emit.

2019-01-16  Kito Cheng  <kito@andestech.com>
bfd/
* elf-attrs.c (vendor_obj_attr_size): Return 0 if size is 0 even
for OBJ_ATTR_PROC.
gas/
* testsuite/gas/riscv/attribute-empty.d: New.

RISC-V: Merge ELF attribute for ld.

2019-01-16  Kito Cheng  <kito@andestech.com>
    Nelson Chu  <nelson@andestech.com>

bfd/
* elfnn-riscv.c (in_subsets): New.
(out_subsets): Likewise.
(merged_subsets): Likewise.
(riscv_std_ext_p): Likewise.
(riscv_non_std_ext_p): Likewise.
(riscv_std_sv_ext_p): Likewise.
(riscv_non_std_sv_ext_p): Likewise.
(riscv_version_mismatch): Likewise.
(riscv_i_or_e_p): Likewise.
(riscv_merge_std_ext): Likewise.
(riscv_merge_non_std_and_sv_ext): Likewise.
(riscv_merge_arch_attr_info): Likewise.
(riscv_merge_attributes): Likewise.
(_bfd_riscv_elf_merge_private_bfd_data): Merge attribute.
ld/
* testsuite/ld-elf/orphan-region.d: XFAIL for RISC-V, because add new
section.
* testsuite/ld-riscv-elf/ld-riscv-elf.exp: Add new tests.
* testsuite/ld-riscv-elf/attr-merge-arch-01.d: New test.
* testsuite/ld-riscv-elf/attr-merge-arch-01a.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-arch-01b.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-arch-02.d: Likewise.
* testsuite/ld-riscv-elf/attr-merge-arch-02a.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-arch-02b.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-arch-03.d: Likewise.
* testsuite/ld-riscv-elf/attr-merge-arch-03a.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-arch-03b.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-arch-failed-01.d: Likewise.
* testsuite/ld-riscv-elf/attr-merge-arch-failed-01a.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-arch-failed-01b.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-priv-spec-a.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-priv-spec-b.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-priv-spec.d: Likewise.
* testsuite/ld-riscv-elf/attr-merge-stack-align-a.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-stack-align-b.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-stack-align-failed-a.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-stack-align-failed-b.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-stack-align-failed.d: Likewise.
* testsuite/ld-riscv-elf/attr-merge-stack-align.d: Likewise.
* testsuite/ld-riscv-elf/attr-merge-strict-align-01.d: Likewise.
* testsuite/ld-riscv-elf/attr-merge-strict-align-01a.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-strict-align-01b.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-strict-align-02.d: Likewise.
* testsuite/ld-riscv-elf/attr-merge-strict-align-02a.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-strict-align-02b.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-strict-align-03.d: Likewise.
* testsuite/ld-riscv-elf/attr-merge-strict-align-03a.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-strict-align-03b.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-strict-align-04.d: Likewise.
* testsuite/ld-riscv-elf/attr-merge-strict-align-04a.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-strict-align-04b.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-strict-align-05.d: Likewise.
* testsuite/ld-riscv-elf/attr-merge-strict-align-05a.s: Likewise.
* testsuite/ld-riscv-elf/attr-merge-strict-align-05b.s: Likewise.

RISC-V: Support ELF attribute for gas and readelf.

2019-01-16  Kito Cheng  <kito@andestech.com>
    Nelson Chu  <nelson@andestech.com>

bfd/
* elfnn-riscv.c (riscv_elf_obj_attrs_arg_type): New.
(elf_backend_obj_attrs_vendor): Define.
(elf_backend_obj_attrs_section_type): Likewise.
(elf_backend_obj_attrs_section): Likewise.
(elf_backend_obj_attrs_arg_type): Define as
riscv_elf_obj_attrs_arg_type.
* elfxx-riscv.c (riscv_estimate_digit): New.
(riscv_estimate_arch_strlen1): Likewise.
(riscv_estimate_arch_strlen): Likewise.
(riscv_arch_str1): Likewise.
(riscv_arch_str): Likewise.
* elfxx-riscv.h (riscv_arch_str): Declare.
binutils/
* readelf.c (get_riscv_section_type_name): New function.
(get_section_type_name): Add handler for RISC-V.
(riscv_attr_tag_t): Declare.
(riscv_attr_tag): New.
(display_riscv_attribute): New function.
(process_attributes): Add handler for RISC-V.
* testsuite/binutils-all/strip-3.d: Remove .riscv.attribute
section.
gas/
* config/tc-riscv.c (DEFAULT_RISCV_ATTR): Define to 0 if not defined.
(riscv_set_options): Add `arch_attr` field.
(riscv_opts): Set default value for arch_attr.
(riscv_write_out_arch_attr): New.
(riscv_set_public_attributes): Likewise.
(riscv_md_end): Likewise.
(riscv_convert_symbolic_attribute): Likewise.
(s_riscv_attribute): Likewise.
(explicit_arch_attr): Likewise.
(riscv_pseudo_table): Add .attribute to the table.
(options): Add OPTION_ARCH_ATTR and OPTION_NO_ARCH_ATTR
enumeration constants.
(md_longopts): Add `march-attr' and `mno-arch-attr' options.
(md_parse_option): Handle the new options.
(md_show_usage): Document the `march-attr' option.
* config/tc-riscv.h (md_end): Define as riscv_md_end
(riscv_md_end): Declare.
(CONVERT_SYMBOLIC_ATTRIBUTE): Define as
riscv_convert_symbolic_attribute.
(riscv_convert_symbolic_attribute): Declare.
(start_assemble): Declare.
* testsuite/gas/elf/elf.exp: Adjust test case for section2.e.
* testsuite/gas/elf/section2.e-riscv: New.
* testsuite/gas/riscv/attribute-01.d: New test
* testsuite/gas/riscv/attribute-02.d: Likewise.
* testsuite/gas/riscv/attribute-03.d: Likewise.
* testsuite/gas/riscv/attribute-04.d: Likewise.
* testsuite/gas/riscv/attribute-04.s: Likewise.
* testsuite/gas/riscv/attribute-05.d: Likewise.
* testsuite/gas/riscv/attribute-05.s: Likewise.
* testsuite/gas/riscv/attribute-06.d: Likewise.
* testsuite/gas/riscv/attribute-06.s: Likewise.
* testsuite/gas/riscv/attribute-07.d: Likewise.
* testsuite/gas/riscv/attribute-07.s: Likewise.
* testsuite/gas/riscv/attribute-08.d: Likewise.
* testsuite/gas/riscv/attribute-08.s: Likewise.
* testsuite/gas/riscv/attribute-unknown.d: Likewise.
* testsuite/gas/riscv/attribute-unknown.s: Likewise.
* testsuite/gas/riscv/empty.l: Likewise.
* doc/c-riscv.texi (.attribute): Add documentation.
* configure.ac (--enable-default-riscv-attribute): New options.
* configure: Re-generate.
* config.in: Re-generate.
include/
* elf/riscv.h (SHT_RISCV_ATTRIBUTES): Define.
(Tag_RISCV_arch): Likewise.
(Tag_RISCV_priv_spec): Likewise.
(Tag_RISCV_priv_spec_minor): Likewise.
(Tag_RISCV_priv_spec_revision): Likewise.
(Tag_RISCV_unaligned_access): Likewise.
(Tag_RISCV_stack_align): Likewise.

Do not expand macros to 'defined'

Expanding a macro which contains 'defined' PP keyword is UB.  It causes
a compilation failure when -Wexpansion-to-defined is used.

sim/common/Changelog:
2019-01-16  Pavel I. Kryukov  <kryukov@frtk.ru>

* sim-arange.c: eliminate DEFINE_NON_INLINE_P

Introduce dwarf2_cu::get_builder

This patch is an attempt to deal with a variety of bugs reported where
GDB segfaults attempting to access a dwarf2_cu's builder.  In certain
circumstances, this builder can be NULL.  This is especially common
when inheriting DIEs via inlined subroutines in other CUs.  The test
case demonstrates one such situation reported by users.  See gdb/23773,
rhbz1638798, and dups for other concrete examples.

The approach taken here is to save the ancestor CU into the dwarf2_cu of
all CUs with DIEs that are "imported."  This can happen whenever
follow_die_offset and friends are called.  This essentially introduces a
chain of CUs that caused the importation of a DIE from a CU.  Whenever
a builder is requested of a CU that has none, the ancestors are searched
for the first one with a builder.

A design side effect of this is that the builder can now only be
accessed by getter and setter methods because the builder itself
is private.

The bulk of the patch is relatively mindless text conversion from
"cu->builder" to "cu->get_builder ()".  I've included one test which
was derived from one (of the many) bugs reported on the issue in both
sourceware and Fedora bugzillas.

gdb/ChangeLog:

PR gdb/23773
* dwarf2read.c (dwarf2_cu) <ancestor>: New field.
<builder>: Rename to ..
<m_builder>: ... this and make private.
(dwarf2_cu::get_builder): New method.  Change all users of
`builder' to use this method.
(dwarf2_start_symtab): Move to ...
(dwarf2_cu::start_symtab): ... here.  Update all callers
(setup_type_unit_groups): Move to ...
(dwarf2_cu::setup_type_unit_groups): ... here.  Update all
callers.
(dwarf2_cu::reset_builder): New method.
(process_full_compunit, process_full_type_unit): Use
dwarf2_cu::reset_builder.
(follow_die_offset): Record the ancestor CU if it is different
from the followed DIE's CU.
(follow_die_sig_1): Likewise.

gdb/testsuite/ChangeLog:

PR gdb/23773
* gdb.dwarf2/inlined_subroutine-inheritance.exp: New file.

doc: Add table of MI versions

This patch adds a table summarizing the history or MI versions:

- The version number
- Which GDB version introduced it
- Breaking changes compared to the previous version

The goal of the table is to help writers of front ends know which
version of MI they can use with a given GDB version.  It will also help
them update their code to work against a newer MI version.

Right now, we just have 1 and 2, but we expect to add an entry for 3
soon.  I did a bit of archelogy and reverse engineering of the code to
come up with the breaking changes for MI 2.

I did some changes to the text around it, some things that I thought
needed to be clarified, seemed a bit dated or seemed just wrong
(especially "Apart from mi0, new versions of @value{GDBN} will not
support old versions of MI").

gdb/doc/ChangeLog:

* gdb.texinfo (GDB/MI Development and Front Ends): Add table of
MI versions.  Update text around it.

S12Z: gas: Fix bug when a symbol name was the single letter 'c'.

The assembler incorrectly recognised "c" as a register name, and
refused to allow it where it expected a symbol/label.

gas/
* config/tc-s12z.c (lex_reg_name): Compare the length of the strings
before the contents.
* testsuite/gas/s12z/labels.d: New file.
* testsuite/gas/s12z/labels.s: New file.
* testsuite/gas/s12z/s12z.exp: Add them.

S12Z: gas: Permit "extend" instructions which don't actually extend.

Other assemblers permit "extending" a register into a register of a
smaller size or the same size.  It doesn't make much sense to do this
but would appear to be a valid instruction.  So change the error to a
warning.

gas/
* config/tc-s12z.c (tfr): Change as_bad to as_warn.
Also fix message typo and semantics.

S12Z: Emit RELOC_S12Z_OPR instead of RELOC_EXT24 where appropriate.

When assembling instructions which involve OPR references, emit
RELOC_S12Z_OPR instead of RELOC_EXT24.

bfd/
* bfd-in2.h [BFD_RELOC_S12Z_OPR]: New reloc.
* libbfd.h: regen.
* elf32-s12z.c (eld_s12z_howto_table): R_S12Z_OPR takes non zero
source field.  (md_apply_fix): Apply final fix
to BFD_RELOC_S12Z_OPR.
* reloc.c[BFD_RELOC_S12Z_OPR]: New reloc.

gas/
* config/tc-s12z.c (emit_opr): Emit BFD_RELOC_S12Z_OPR instead of
BFD_RELOC_24.
* testsuite/gas/s12z/opr-indirect-expr.d: Expect R_S12Z_OPR instead
of R_S12Z_EXT24.

Automatic date update in version.in

sim: Fix definition of SIM_ARANGE_INLINE

If HAVE_INLINE is false, SIM_ARANGE_INLINE is currently defined as

    #define SIM_ARANGE_INLINE EXTERN

However, EXTERN is not defined anywhere, leading to errors such as:

    In file included from
    /mipt-mips/simulator/../../sim/common/sim-basics.h:147:0,
                     from /mipt-mips/simulator/export/gdb/sim-main.h:13,
                     from /mipt-mips/simulator/export/gdb/gdb_interface.cpp:7:
    /mipt-mips/simulator/../../sim/common/sim-arange.h:71:27: error: ‘EXTERN’
    does not name a type; did you mean ‘EUSERS’?
     #define SIM_ARANGE_INLINE EXTERN
                               ^
    /mipt-mips/simulator/../../sim/common/sim-arange.h:76:1: note: in expansion
    of macro ‘SIM_ARANGE_INLINE’
     SIM_ARANGE_INLINE int
     ^~~~~~~~~~~~~~~~~

I (Simon) have reproduced the problem by simply removing the HAVE_INLINE
definition.  This was originally reported by Pavel I. Kryukov
<kryukov@frtk.ru>.

sim/common/ChangeLog:

* sim-arange.h (SIM_ARANGE_INLINE): Change EXTERN to extern.

Remove cleanup from remote.c

This removes the remaining cleanup from remote.c, by changing
remote_state::buf to be a gdb::char_vector, and then fixing up all the
fallout.  The resulting patch is somewhat ugly, but on the other hand,
it eliminates some possibilities for mistakes.

Regression tested using the
Fedora-x86_64-native-extended-gdbserver-m64 builder on the buildbot.

gdb/ChangeLog
2019-01-15  Tom Tromey  <tom@tromey.com>

* remote.c (class remote_state) <buf>: Now a char_vector.
<buf_size>: Remove.
(remote_target::getpkt): Change type of buf.  Remove sizeof_buf
parameter.
(remote_target::getpkt_or_notif_sane_1)
(remote_target::getpkt_sane)
(remote_target::getpkt_or_notif_sane): Likewise.
(class remote_target) <putpkt>: New overload.
(remote_target::read_frame): Change type of "buf_p".  Remove
sizeof_p parameter.
(packet_ok): New overload.
(packet_check_result): New overload.
Update all uses.

Constify some remote-notif functions

This constifies the "buf" arguments to various remote-notif functions
and updates the users.

gdb/ChangeLog
2019-01-14  Tom Tromey  <tom@tromey.com>

* remote-notif.c (handle_notification, remote_notif_ack)
(remote_notif_parse): Make "buf" const.
* remote-notif.h (struct notif_client) <parse, ack>: Make "buf"
const.
(remote_notif_parse, remote_notif_ack, handle_notification):
Likewise.
* remote.c (remote_notif_stop_parse): Make "buf" const.
(remote_target::remote_parse_stop_reply): Make "buf" const.
(remote_notif_stop_ack): Make "buf" const.

Constify remote_console_output

This constifies the parameter to remote_console_output.

gdb/ChangeLog
2019-01-14  Tom Tromey  <tom@tromey.com>

* remote.c (remote_console_output): Make parameter const.

Constify target_pass_signals and target_program_signals

This constifies the final parameter to target_pass_signals and
target_program_signals and updates the rest of gdb.

Note that I have no way to test the nto-procfs.c change.

gdb/ChangeLog
2019-01-14  Tom Tromey  <tom@tromey.com>

* target-debug.h (target_debug_print_signals): Constify.
* nto-procfs.c (nto_procfs_target::pass_signals): Update.
* procfs.c (procfs_target::pass_signals): Update.
* linux-nat.c (linux_nat_target::pass_signals): Update.
* linux-nat.h (class linux_nat_target) <pass_signals>: Update.
* target-delegates.c: Rebuild.
* remote.c (remote_target::program_signals): Update.
(remote_target::pass_signals): Update.
* target.c (target_pass_signals): Constify argument.
(target_program_signals): Likewise.
* target.h (struct target_ops) <pass_signals, program_signals>:
Constify argument.
(target_pass_signals, target_program_signals): Constify argument.

Automatic date update in version.in

Fix placement of output in TUI mode

The fix for PR tui/28819 regressed gdb command output a bit.  In
"nonl" mode, pressing the Enter key will result in a newline not being
echoed properly, so that gdb output for the command will begin on the
same line as the input.

This patch changes gdb_wgetch to echo the newline.  I have only tested
this interactively, as the TUI doesn't have automated tests in
general.

gdb/ChangeLog
2019-01-14  Tom Tromey  <tom@tromey.com>

PR tui/28819:
* tui/tui-io.c (gdb_wgetch): Print \r when needed.

Include <string.h> to dis-asm.h to get strchr declaration

Include <string.h> to dis-asm.h to get strchr declaration

include/Changelog:
2019-01-11  Pavel I. Kryukov  <kryukov@frtk.ru>

        * dis-asm.h: include <string.h>

[PowerPC] Aliases for vector registers

This patch defines pseudo-registers "v0" through "v31" as aliases that
map to the corresponding raw "vr0" through "vr31" vector registers for
Power.

The motivation behind this is that although GDB defines these
registers as "vrX", the disassembler prints them as "vX", e.g. as the
operands in instructions such as "vaddubm v2,v1,v1".  This can be
confusing to users trying to print out the values of the operands
while inspecting the disassembled code.

The new aliases are made not to belong to any register group, to avoid
duplicated values in "info register vector" and "info register all".
The arch-specific rs6000_pseudo_register_reggroup_p function had
previously been removed since the other pseudo-registers could have
their groups inferred by their type.  It restored with this patch to
handle the aliases.  Membership for the other pseudo-registers is
still determined using the default function.

A new tests checks that GDB prints the expected values of vector
registers after they are filled by the inferior, by using both the raw
names and the aliases.  Two other existing tests are modified to also
test the aliases.

gdb/ChangeLog:
2019-01-14  Pedro Franco de Carvalho  <pedromfc@linux.ibm.com>

* ppc-tdep.h (struct gdbarch_tdep) <ppc_v0_alias_regnum>: New
field.
* rs6000-tdep.c: Include reggroups.h.
(IS_V_ALIAS_PSEUDOREG): Define.
(rs6000_register_name): Return names for the "vX" aliases.
(rs6000_pseudo_register_type): Return type for the "vX" aliases.
(rs6000_pseudo_register_reggroup_p): Restore.  Handle "vX"
aliases.  Call default_register_reggroup_p for all other
pseudo-registers.
(v_alias_pseudo_register_read, v_alias_pseudo_register_write):
New functions.
(rs6000_pseudo_register_read, rs6000_pseudo_register_write):
Handle "vX" aliases.
(v_alias_pseudo_register_collect): New function.
(rs6000_ax_pseudo_register_collect): Handle "vX" aliases.
(rs6000_gdbarch_init): Initialize "vX" aliases as
pseudo-registers.  Restore registration of
rs6000_pseudo_register_reggroup_p with
set_tdesc_pseudo_register_reggroup_p.

gdb/testsuite/ChangeLog:
2019-01-14  Pedro Franco de Carvalho  <pedromfc@linux.ibm.com>

* gdb.arch/vsx-regs.exp: Add tests that use the vector register
aliases.
* gdb.arch/altivec-regs.exp: Likewise.  Fix indentation of two
tests.
* gdb.arch/powerpc-vector-regs.c: New file.
* gdb.arch/powerpc-vector-regs.exp: New file.

gdb/doc/ChangeLog:
2019-01-14  Pedro Franco de Carvalho  <pedromfc@linux.ibm.com>

* gdb.texinfo (PowerPC Features): Document the alias
pseudo-registers for the org.gnu.gdb.power.altivec feature.

[PowerPC] Fix "info vector" test in gdb.arch/altivec-regs.exp

This patch fixes one of the tests in gdb.arch/altivec-regs.exp that
was passing an incorrect list to gdb_expect_list, which always
matched.

gdb/testsuite/ChangeLog:
2019-01-14  Pedro Franco de Carvalho  <pedromfc@linux.ibm.com>

* gdb.arch/altivec-regs.exp: Fix the list passed to
gdb_expect_list when testing "info vector".

Correct PR number in prevvious delta

Add support to GNU ld to separate got related plt entries from normal ones in order to be able to switch the non-plt got entries to read-only after startup, conforming to revised Linux for zSeries ABI.

PR 20133
* emulparams/elf64_s390.sh (SEPARATE_GOTPLT): Define.
* emulparams/elf_s390.sh (SEPARATE_GOTPLT): Define.
* testsuite/ld-s390/gotreloc_31-1.dd: Update expected output.
* testsuite/ld-s390/tlsbin.dd: Likewise.
* testsuite/ld-s390/tlsbin.rd: Likewise.
* testsuite/ld-s390/tlsbin.sd: Likewise.
* testsuite/ld-s390/tlsbin_64.dd: Likewise.
* testsuite/ld-s390/tlsbin_64.rd: Likewise.
* testsuite/ld-s390/tlsbin_64.sd: Likewise.
* testsuite/ld-s390/tlspic.dd: Likewise.
* testsuite/ld-s390/tlspic.rd: Likewise.
* testsuite/ld-s390/tlspic.sd: Likewise.
* testsuite/ld-s390/tlspic_64.dd: Likewise.
* testsuite/ld-s390/tlspic_64.rd: Likewise.
* testsuite/ld-s390/tlspic_64.sd: Likewise.
* testsuite/ld-s390/s390.exp: Skip s390 tests for tpf targets.

Sync config.guess, config.sub from GCC

Merge from GCC:
PR target/88535
* config.guess: Import upstream version 2019-01-03.
* config.sub: Import upstream version 2019-01-01.

Implement the assembly instructions yield, wfe, wfi and sev for ARMv6T2 in both ARM mode and Thumb mode.

* config/tc-arm.c (arm_ext_v6k_v6t2): Define.
(insns) [ARM_VARIANT]: Modified.
(insns) [THUMB_VARIANT]: To implement few ARMv6K instructions
in ARMv6T2 as well.
* testsuite/gas/arm/archv6t2-1.d: New test.
* testsuite/gas/arm/archv6t2-1.s: Likewise.
* testsuite/gas/arm/archv6t2-2.d: Likewise.

ld: Clarify --wrap documentation

ld/

* ld.texi (--wrap): Add example to emphasise that only undefined
references are replaced by the linker.

Automatic date update in version.in

gdb: xtensa: fix register counters for xtensa-linux

Commit 37d9e0623102 ("gdb: xtensa: handle privileged registers") changed
how the tdep->num_regs and tdep->num_pseudo_regs are calculated, but
didn't update these numbers in the gdbarch for the xtensa-linux target.
As a result xtensa-linux-gdb behaves as xtensa-elf-gdb and cannot
communicate with the linux gdbserver.
Fix tdep->num_pseudo_regs calculation and call set_gdbarch_num_regs and
set_gdbarch_num_pseudo_regs in xtensa_linux_init_abi.

gdb/
2019-01-13  Max Filippov  <jcmvbkbc@gmail.com>

* xtensa-linux-tdep.c (xtensa_linux_init_abi): Update
tdep->num_pseudo_regs. Add calls to set_gdbarch_num_regs and
set_gdbarch_num_pseudo_regs.

Automatic date update in version.in

Implement help/show values for 'set|show style'.

Currently, the behaviour is:
  (gdb) show style
  (gdb) set style
  (gdb) show style address
  (gdb) set style address
  (gdb)

With this patch, the behaviour is:
  (gdb) show style
  style address background:  The "address" background color is: none
  style address foreground:  The "address" foreground color is: blue
  style address intensity:  The "address" display intensity is: normal
  enabled:  CLI output styling is enabled.
  style filename background:  The "filename" background color is: none
  style filename foreground:  The "filename" foreground color is: green
  style filename intensity:  The "filename" display intensity is: normal
  style function background:  The "function" background color is: none
  style function foreground:  The "function" foreground color is: yellow
  style function intensity:  The "function" display intensity is: normal
  style variable background:  The "variable" background color is: none
  style variable foreground:  The "variable" foreground color is: cyan
  style variable intensity:  The "variable" display intensity is: normal
  (gdb) set style
  "set style" must be followed by an appropriate subcommand.
  List of set style subcommands:

  set style address -- Address display styling
  set style enabled -- Set whether CLI styling is enabled
  set style filename -- Filename display styling
  set style function -- Function name display styling
  set style variable -- Variable name display styling

  Type "help set style" followed by set style subcommand name for full documentation.
  Type "apropos word" to search for commands related to "word".
  Command name abbreviations are allowed if unambiguous.
  (gdb) show style address
  background:  The "filename" background color is: none
  foreground:  The "filename" foreground color is: green
  intensity:  The "filename" display intensity is: normal
  (gdb) set style address
  List of set style address subcommands:

  set style address background -- Set the background color for this property
  set style address foreground -- Set the foreground color for this property
  set style address intensity -- Set the display intensity color for this property

  Type "help set style address" followed by set style address subcommand name for full documentation.
  Type "apropos word" to search for commands related to "word".
  Command name abbreviations are allowed if unambiguous.
  (gdb)

gdb/ChangeLog
* cli/cli-style.h (class cli_style_option): <add_setshow_commands>
Remove arg prefixname, add do_set and do_show.
Add member functions set_list and show_list.
* cli/cli-style.c (class cli_style_option): Update accordingly.
(style_set_list): Move to file scope.
(style_show_list): Likewise.
(set_style): Call help_list.
(show_style): Call cmd_show_list.
(_initialize_cli_style): New macro STYLE_ADD_SETSHOW_COMMANDS.
Update to use the new macro.

Add RXv3 instructions.

        * rx-decode.opc (DSIZE): New. double size.
        (_ld): New. dmov size attribute.
        (PSCALE): Add double size.
        (DCR, DDR, DDRH, DDRL, DCND): New. Double FPU registers.
        (SCR, SDR, SDRH, SDRL): Likewise.
        (S2DR, S2CR): Likewise.
        (SDD): New. double displacement.
        (DL): New. Set dmov size attribute.
        (rx_decode_opcode): Add RXv3 instructions.
        * rx-decode.c: Regenerate.
        * rx-dis.c (size_names): Add double entry.
        (opsize_names): Likewise.
        (double_register_names): New. Double FPU registers.
        (double_register_high_names): Likewise.
        (double_register_low_names): Likewise.
        (double_register_control_names): Likewise.
        (double_condition_names): dcmp condition.
        (print_insn_rx): Add  bfmov / bfmovz output.
        Add double FPU output.

expand a bit the in-GDB help for the "catch exception" help text

One of our users remarked that the help doesn't mention the fact that
the "catch exception" supports the special argument "unhandled" to catch
exceptions which do not have a handler. This patch changes the output
of...

 | (gdb) help catch exception
 | Catch Ada exceptions, when raised.
 | With an argument, catch only exceptions with the given name.

... to ...

 | (gdb) help catch exception
 | Catch Ada exceptions, when raised.
 | Usage: catch exception [ ARG ]
 |
 | Without any argument, stop when any Ada exception is raised.
 | If ARG is "unhandled" (without the quotes), only stop when the exception
 | being raised does not have a handler (and will therefore lead to the task's
 | termination).
 | Otherwise, the catchpoint only stops when the name of the exception being
 | raised is the same as ARG.

gdb/ChangeLog:

        * ada-lang.c (_initialize_ada_language): Expand the help text
        for the "catch exception" command.

Tested on x86_64-linux, no regression.

gdb/testsuite: Don't allow paths to appear in test name

Having paths in the test names makes it harder to compare results
between two runs in different directories.  Give the test a name so
that the path doesn't appear.

gdb/ChangeLog:

* gdb.base/style.exp: Don't include path in testname.

Fix 'obj' may be used uninitialized warning in symtab.c:matching_obj_sections.

Fix warning:

gdb/symtab.c: In function ‘int matching_obj_sections(obj_section*, obj_section*)’:
gdb/symtab.c:1024:12: warning: ‘obj’ may be used uninitialized in this function [-Wmaybe-uninitialized]
   if (obj->separate_debug_objfile_backlink != NULL

2019-01-12  Philippe Waroquiers  <philippe.waroquiers@skynet.be>

* symtab.c (matching_obj_sections): Initialize obj,
declare it closer to its usage.

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More fallout from PR 23963 change

PR 23963
* testsuite/gas/m68hc11/lbranch-dwarf2.d: Adjust for PR23963 change.
* testsuite/gas/m68hc11/opers12-dwarf2.d: Likewise.

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