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binutils-gdb/gdbsupport/ChangeLog
Simon Marchi 3ec3145c5d gdb: introduce scoped debug prints 
I spent a lot of time reading infrun debug logs recently, and I think
they could be made much more readable by being indented, to clearly see
what operation is done as part of what other operation.  In the current
format, there are no visual cues to tell where things start and end,
it's just a big flat list.  It's also difficult to understand what
caused a given operation (e.g. a call to resume_1) to be done.

To help with this, I propose to add the new scoped_debug_start_end
structure, along with a bunch of macros to make it convenient to use.

The idea of scoped_debug_start_end is simply to print a start and end
message at construction and destruction.  It also increments/decrements
a depth counter in order to make debug statements printed during this
range use some indentation.  Some care is taken to handle the fact that
debug can be turned on or off in the middle of such a range.  For
example, a "set debug foo 1" command in a breakpoint command, or a
superior GDB manually changing the debug_foo variable.

Two macros are added in gdbsupport/common-debug.h, which are helpers to
define module-specific macros:

  - scoped_debug_start_end: takes a message that is printed both at
    construction / destruction, with "start: " and "end: " prefixes.
  - scoped_debug_enter_exit: prints hard-coded "enter" and "exit"
    messages, to denote the entry and exit of a function.

I added some examples in the infrun module to give an idea of how it can
be used and what the result looks like.  The macros are in capital
letters (INFRUN_SCOPED_DEBUG_START_END and
INFRUN_SCOPED_DEBUG_ENTER_EXIT) to mimic the existing SCOPE_EXIT, but
that can be changed if you prefer something else.

Here's an excerpt of the debug
statements printed when doing "continue", where a displaced step is
started:

    [infrun] proceed: enter
      [infrun] proceed: addr=0xffffffffffffffff, signal=GDB_SIGNAL_DEFAULT
      [infrun] global_thread_step_over_chain_enqueue: enqueueing thread Thread 0x7ffff75a5640 (LWP 2289301) in global step over chain
      [infrun] start_step_over: enter
        [infrun] start_step_over: stealing global queue of threads to step, length = 1
        [infrun] start_step_over: resuming [Thread 0x7ffff75a5640 (LWP 2289301)] for step-over
        [infrun] resume_1: step=1, signal=GDB_SIGNAL_0, trap_expected=1, current thread [Thread 0x7ffff75a5640 (LWP 2289301)] at 0x5555555551bd
        [displaced] displaced_step_prepare_throw: displaced-stepping Thread 0x7ffff75a5640 (LWP 2289301) now
        [displaced] prepare: selected buffer at 0x5555555550c2
        [displaced] prepare: saved 0x5555555550c2: 1e fa 31 ed 49 89 d1 5e 48 89 e2 48 83 e4 f0 50
        [displaced] amd64_displaced_step_copy_insn: copy 0x5555555551bd->0x5555555550c2: c7 45 fc 00 00 00 00 eb 13 8b 05 d4 2e 00 00 83
        [displaced] displaced_step_prepare_throw: prepared successfully thread=Thread 0x7ffff75a5640 (LWP 2289301), original_pc=0x5555555551bd, displaced_pc=0x5555555550c2
        [displaced] resume_1: run 0x5555555550c2: c7 45 fc 00
        [infrun] infrun_async: enable=1
        [infrun] prepare_to_wait: prepare_to_wait
        [infrun] start_step_over: [Thread 0x7ffff75a5640 (LWP 2289301)] was resumed.
        [infrun] operator(): step-over queue now empty
      [infrun] start_step_over: exit
      [infrun] proceed: start: resuming threads, all-stop-on-top-of-non-stop
        [infrun] proceed: resuming Thread 0x7ffff7da7740 (LWP 2289296)
        [infrun] resume_1: step=0, signal=GDB_SIGNAL_0, trap_expected=0, current thread [Thread 0x7ffff7da7740 (LWP 2289296)] at 0x7ffff7f7d9b7
        [infrun] prepare_to_wait: prepare_to_wait
        [infrun] proceed: resuming Thread 0x7ffff7da6640 (LWP 2289300)
        [infrun] resume_1: thread Thread 0x7ffff7da6640 (LWP 2289300) has pending wait status status->kind = stopped, signal = GDB_SIGNAL_TRAP (currently_stepping=0).
        [infrun] prepare_to_wait: prepare_to_wait
        [infrun] proceed: [Thread 0x7ffff75a5640 (LWP 2289301)] resumed
        [infrun] proceed: resuming Thread 0x7ffff6da4640 (LWP 2289302)
        [infrun] resume_1: thread Thread 0x7ffff6da4640 (LWP 2289302) has pending wait status status->kind = stopped, signal = GDB_SIGNAL_TRAP (currently_stepping=0).
        [infrun] prepare_to_wait: prepare_to_wait
      [infrun] proceed: end: resuming threads, all-stop-on-top-of-non-stop
    [infrun] proceed: exit

We can easily see where the call to `proceed` starts and end.  We can
also see why there are a bunch of resume_1 calls, it's because we are
resuming threads, emulating all-stop on top of a non-stop target.

We also see that debug statements nest well with other modules that have
been migrated to use the "new" debug statement helpers (because they all
use debug_prefixed_vprintf in the end.  I think this is desirable, for
example we could see the debug statements about reading the DWARF info
of a library nested under the debug statements about loading that
library.

Of course, modules that haven't been migrated to use the "new" helpers
will still print without indentations.  This will be one good reason to
migrate them.

I think the runtime cost (when debug statements are disabled) of this is
reasonable, given the improvement in readability.  There is the cost of
the conditionals (like standard debug statements), one more condition
(if (m_must_decrement_print_depth)) and the cost of constructing a stack
object, which means copying a fews pointers.

Adding the print in fetch_inferior_event breaks some tests that use "set
debug infrun", because it prints a debug statement after the prompt.  I
adapted these tests to cope with it, by using the "-prompt" switch of
gdb_test_multiple to as if this debug statement is part of the expected
prompt.  It's unfortunate that we have to do this, but I think the debug
print is useful, and I don't want a few tests to get in the way of
adding good debug output.

gdbsupport/ChangeLog:

	* common-debug.h (debug_print_depth): New.
	(struct scoped_debug_start_end): New.
	(scoped_debug_start_end): New.
	(scoped_debug_enter_exit): New.
	* common-debug.cc (debug_prefixed_vprintf): Print indentation.

gdb/ChangeLog:

	* debug.c (debug_print_depth): New.
	* infrun.h (INFRUN_SCOPED_DEBUG_START_END): New.
	(INFRUN_SCOPED_DEBUG_ENTER_EXIT): New.
	* infrun.c (start_step_over): Use
	INFRUN_SCOPED_DEBUG_ENTER_EXIT.
	(proceed): Use INFRUN_SCOPED_DEBUG_ENTER_EXIT and
	INFRUN_SCOPED_DEBUG_START_END.
	(fetch_inferior_event): Use INFRUN_SCOPED_DEBUG_ENTER_EXIT.

gdbserver/ChangeLog:

	* debug.cc (debug_print_depth): New.

gdb/testsuite/ChangeLog:

        * gdb.base/ui-redirect.exp: Expect infrun debug print after
	prompt.
        * gdb.threads/ia64-sigill.exp: Likewise.
        * gdb.threads/watchthreads-reorder.exp: Likewise.

Change-Id: I7c3805e6487807aa63a1bae318876a0c69dce949
2021-01-04 12:00:54 -05:00

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2021-01-04 Simon Marchi <simon.marchi@efficios.com>
* common-debug.h (debug_print_depth): New.
(struct scoped_debug_start_end): New.
(scoped_debug_start_end): New.
(scoped_debug_enter_exit): New.
* common-debug.cc (debug_prefixed_vprintf): Print indentation.
2020-12-11 Andrew Burgess <andrew.burgess@embecosm.com>
* gdbsupport/common-utils.cc: Change 'ctype.h' include to
'safe-ctype.h'.
(extract_string_maybe_quoted): Use safe-ctype function versions.
(is_digit_in_base): Likewise.
(digit_to_int): Likewise.
(strtoulst): Likewise.
(skip_spaces): Likewise.
(skip_to_space): Likewise.
2020-12-11 Simon Marchi <simon.marchi@polymtl.ca>
* common-debug.h (debug_prefixed_printf_cond): New.
* event-loop.h (event_loop_debug_printf): Use
debug_prefixed_printf_cond.
2020-12-08 Alexander Fedotov <alfedotov@gmail.com>
* pathstuff.cc (get_standard_cache_dir): Use LOCALAPPDATA environment
variable when running on Windows.
2020-12-01 Andrew Burgess <andrew.burgess@embecosm.com>
* tdesc.cc (print_xml_feature::visit): Print enum fields using
'evalue' syntax.
2020-12-01 Chungyi Chi <demonic@csie.io>
* tdesc.cc (print_xml_feature::visit): Print enum size attribute.
2020-11-20 Tom Tromey <tromey@adacore.com>
* thread-pool.cc (thread_pool::set_thread_count): Ignore system
errors.
2020-11-10 Tom Tromey <tromey@adacore.com>
PR build/26848:
* pathstuff.h: Move include block here...
* pathstuff.cc: ... from here.
2020-11-02 Tom Tromey <tom@tromey.com>
* pathstuff.h (get_standard_config_dir): Declare.
* pathstuff.cc (get_standard_config_dir): New function.
2020-11-02 Simon Marchi <simon.marchi@efficios.com>
* common-exceptions.h: Fix indentation.
* event-loop.cc: Fix indentation.
* fileio.cc: Fix indentation.
* filestuff.cc: Fix indentation.
* gdb-dlfcn.cc: Fix indentation.
* gdb_string_view.h: Fix indentation.
* job-control.cc: Fix indentation.
* signals.cc: Fix indentation.
2020-10-31 Simon Marchi <simon.marchi@polymtl.ca>
* common-debug.cc (debug_prefixed_printf): New.
* common-debug.h (debug_prefixed_printf): New declaration.
* event-loop.cc (event_loop_debug_printf_1): Remove.
* event-loop.h (event_loop_debug_printf_1): Remove.
(event_loop_debug_printf): Use debug_prefixed_printf.
(event_loop_ui_debug_printf): Use debug_prefixed_printf.
2020-10-31 Simon Marchi <simon.marchi@polymtl.ca>
* common.m4: Replace AC_TRY_COMPILE with AC_COMPILE_IFELSE +
AC_LANG_PROGRAM.
* configure: Re-generate.
2020-10-31 Simon Marchi <simon.marchi@polymtl.ca>
* common.m4: Replace AC_FUNC_VFORK with AC_FUNC_FORK.
2020-10-31 Simon Marchi <simon.marchi@polymtl.ca>
* configure: Re-generate.
* warning.m4: Replace AC_TRY_COMPILE with AC_COMPILE_IFELSE +
AC_LANG_PROGRAM.
2020-10-31 Simon Marchi <simon.marchi@polymtl.ca>
* configure: Re-generate.
* ptrace.m4: Replace AC_TRY_COMPILE with AC_COMPILE_IFELSE +
AC_LANG_PROGRAM.
2020-10-31 Simon Marchi <simon.marchi@polymtl.ca>
* configure: Re-generate.
* ptrace.m4: Re-indent.
2020-10-31 Simon Marchi <simon.marchi@polymtl.ca>
* aclocal.m4: Re-generate.
* configure: Re-generate.
* configure.ac: Remove AM_PROG_CC_STDC.
2020-10-31 Simon Marchi <simon.marchi@polymtl.ca>
* configure.ac: Use AC_CANONICAL_{BUILD,HOST,TARGET} instead of
AC_CANONICAL_SYSTEM.
* configure: Re-generate.
2020-10-26 Pedro Alves <pedro@palves.net>
* eintr.h (handle_eintr): Replace Ret template parameter with
ErrorValType. Use it as type of the failure value. Deduce the
function's return type using decltype. Use lowercase for function
parameter names.
2020-10-25 Simon Marchi <simon.marchi@polymtl.ca>
* Makefile.in: Re-generate.
* acinclude.m4: Update ptrace.m4 path.
* ptrace.m4: Move here.
2020-10-08 Andrew Burgess <andrew.burgess@embecosm.com>
* tdesc.h (allocate_target_description): Update return type.
2020-10-07 Tom Tromey <tromey@adacore.com>
* Makefile.in: Rebuild.
* Makefile.am (libgdbsupport_a_SOURCES): Add search.cc.
* search.h: New file.
* search.cc: New file.
2020-10-02 Simon Marchi <simon.marchi@polymtl.ca>
* event-loop.h (debug_event_loop): New variable declaration.
(event_loop_debug_printf_1): New function declaration.
(event_loop_debug_printf): New macro.
* event-loop.cc (debug_event_loop): New variable.
(handle_file_event): Add debug print.
(event_loop_debug_printf_1): New function.
2020-10-02 Simon Marchi <simon.marchi@polymtl.ca>
* common-debug.cc (debug_prefixed_vprintf): Move here.
* common-debug.h (debug_prefixed_vprintf): Move here.
2020-10-02 Simon Marchi <simon.marchi@polymtl.ca>
* event-loop.h (add_file_handler): Add "name" parameter.
* event-loop.cc (struct file_handler) <name>: New field.
(create_file_handler): Add "name" parameter, assign it to file
handler.
(add_file_handler): Add "name" parameter.
2020-10-01 Kamil Rytarowski <n54@gmx.com>
* agent.cc (gdb_connect_sync_socket): Preinitialize addr with zeros.
2020-09-29 Pedro Alves <pedro@palves.net>
* valid-expr.h (CHECK_VALID_EXPR_INT): Make archetype a template
class instead of an alias template and adjust static_assert.
2020-09-24 Simon Marchi <simon.marchi@efficios.com>
* event-loop.c (struct file_handler): Remove typedef, re-format.
2020-09-16 John Baldwin <jhb@FreeBSD.org>
* common.m4 (GDB_AC_COMMON): Refactor checks for kinfo_getfile().
* configure, config.in: Regenerate.
2020-09-14 Pedro Alves <pedro@palves.net>
* enum-flags.h: Include "traits.h".
(DEF_ENUM_FLAGS_TYPE): Declare a function instead of defining a
structure.
(enum_underlying_type): Update comment.
(namespace enum_flags_detail): New. Move struct zero_type here.
(EnumIsUnsigned, EnumIsSigned): New.
(class enum_flags): Make most methods constexpr.
(operator&=, operator|=, operator^=): Take an enum_flags instead
of an enum_type. Make rvalue ref versions deleted.
(operator enum_type()): Delete.
(operator&, operator|, operator^, operator~): Delete, moved out of
class.
(raw()): New method.
(is_enum_flags_enum_type_t): Declare.
(ENUM_FLAGS_GEN_BINOP, ENUM_FLAGS_GEN_COMPOUND_ASSIGN)
(ENUM_FLAGS_GEN_COMP): New. Use them to reimplement global
operators.
(operator~): Now constexpr and reimplemented.
(operator<<, operator>>): New deleted functions.
* valid-expr.h (CHECK_VALID_EXPR_5, CHECK_VALID_EXPR_6): New.
2020-09-14 Pedro Alves <pedro@palves.net>
* traits.h (struct nonesuch, struct detector, detected_or)
(detected_or_t, is_detected, detected_t, detected_or)
(detected_or_t, is_detected_exact, is_detected_convertible): New.
* valid-expr.h (CHECK_VALID_EXPR_INT): Use gdb::is_detected_exact.
2020-09-10 Kamil Rytarowski <n54@gmx.com>
* eintr.h: New file.
2020-08-13 Simon Marchi <simon.marchi@polymtl.ca>
* selftest.h (run_tests): Change parameter to array_view.
* selftest.c (run_tests): Change parameter to array_view and use
it.
2020-07-30 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
* Makefile.am (AM_CPPFLAGS): Add LARGEFILE_CPPFLAGS.
* common.m4 (GDB_AC_COMMON): Use BFD_SYS_PROCFS_H to check for
<sys/procfs.h>.
* Makefile.in: Regenerate.
* configure, config.in: Regenerate.
2020-07-28 Tom de Vries <tdevries@suse.de>
PR build/26281
* gdb_optional.h (class optional): Add volatile member to union
contaning m_dummy and m_item.
2020-07-17 Andrew Burgess <andrew.burgess@embecosm.com>
* tdesc.h (struct target_desc_deleter): Moved here
from gdb/target-descriptions.h, extend comment.
(target_desc_up): Likewise.
2020-06-30 Tom Tromey <tromey@adacore.com>
PR build/26183:
* gdb_string_view.h (basic_string_view::to_string): Remove.
(gdb::to_string): New function.
2020-06-27 Simon Marchi <simon.marchi@efficios.com>
* tdesc.h (class print_xml_feature) <add_line>: Add
ATTRIBUTE_PRINTF.
2020-06-23 Andrew Burgess <andrew.burgess@embecosm.com>
* tdesc.cc (print_xml_feature::visit_pre): Use add_line to add
output content, and call indent as needed in all overloaded
variants.
(print_xml_feature::visit_post): Likewise.
(print_xml_feature::visit): Likewise.
(print_xml_feature::add_line): Two new overloaded functions.
* tdesc.h (print_xml_feature::indent): New member function.
(print_xml_feature::add_line): Two new overloaded member
functions.
(print_xml_feature::m_depth): New member variable.
2020-06-23 Andrew Burgess <andrew.burgess@embecosm.com>
* tdesc.cc (print_xml_feature::visit_pre): Print compatible
information.
* tdesc.h (struct tdesc_compatible_info): Declare new struct.
(tdesc_compatible_info_up): New typedef.
(tdesc_compatible_info_list): Declare new function.
(tdesc_compatible_info_arch_name): Declare new function.
2020-05-25 Michael Weghorn <m.weghorn@posteo.de>
* common-utils.cc, common-utils.h (stringify_argv): Drop
now unused function stringify_argv
2020-05-25 Michael Weghorn <m.weghorn@posteo.de>
* common-inferior.cc, common-inferior.h (construct_inferior_arguments):
Adapt to take a gdb::array_view<char * const> parameter.
Adapt call site.
2020-05-25 Michael Weghorn <m.weghorn@posteo.de>
* common-inferior.cc, common-inferior.h (construct_inferior_arguments):
Adapt to handle zero args and return a std::string.
Adapt call site.
2020-05-25 Michael Weghorn <m.weghorn@posteo.de>
* common-inferior.h, common-inferior.cc: (construct_inferior_arguments):
Move function here from gdb/infcmd.c, gdb/inferior.h
2020-05-14 Kevin Buettner <kevinb@redhat.com>
* btrace-common.h (btrace_cpu_vendor): Add CV_AMD.
2020-05-14 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
* common-regcache.h (regcache_read_pc_protected): New function
declaration.
2020-04-28 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
* gdb-sigmask.h: Fix typo (pthead_sigmask -> pthread_sigmask).
2020-04-27 Simon Marchi <simon.marchi@polymtl.ca>
* common-defs.h: Include cstdlib.h.
2020-04-20 Tom Tromey <tromey@adacore.com>
* scoped_mmap.h (scoped_mmap): Mark move constructor as noexcept.
Use initialization style. Don't call destroy.
* scoped_fd.h (class scoped_fd): Mark move constructor as
noexcept.
* gdb_ref_ptr.h (class ref_ptr): Mark move constructor as
noexcept.
2020-04-13 Tom Tromey <tom@tromey.com>
* event-loop.c: Move comment. Remove obsolete comment.
2020-04-13 Tom Tromey <tom@tromey.com>
* event-loop.h: Move from ../gdb/.
* event-loop.cc: Move from ../gdb/.
2020-04-13 Tom Tromey <tom@tromey.com>
* errors.h (flush_streams): Declare.
2020-04-13 Tom Tromey <tom@tromey.com>
* gdb_select.h: Move from ../gdb/.
2020-04-13 Tom Tromey <tom@tromey.com>
* config.in, configure: Rebuild.
* common.m4 (GDB_AC_COMMON): Check for poll.h, sys/poll.h,
sys/select.h, and poll.
2020-03-31 Tom Tromey <tromey@adacore.com>
* btrace-common.cc (btrace_data_append): Conditionally call
memcpy.
2020-03-27 Andrew Burgess <andrew.burgess@embecosm.com>
* create-version.sh: Resolve issues highlighted by shellcheck.
2020-03-20 Simon Marchi <simon.marchi@efficios.com>
* config.in: Re-generate.
* configure: Re-generate.
2020-03-17 Kamil Rytarowski <n54@gmx.com>
* common-defs.h: Include alloca.h if HAVE_ALLOCA_H is defined.
2020-03-12 Tom Tromey <tom@tromey.com>
* common-types.h: Remove GDBSERVER code.
(gdb_byte, CORE_ADDR, LONGEST, ULONGEST): Redefine.
* common-defs.h: Remove GDBSERVER code.
2020-03-12 Simon Marchi <simon.marchi@efficios.com>
* selftest.m4: Moved from gdb/.
* acinclude.m4: Update path to selftest.m4.
2020-03-12 Simon Marchi <simon.marchi@efficios.com>
* configure.ac: Don't source bfd/development.sh.
* common.m4: Source bfd/development.sh.
* configure: Re-generate.
2020-03-12 Simon Marchi <simon.marchi@efficios.com>
* configure: Re-generate.
2020-03-11 Simon Marchi <simon.marchi@efficios.com>
* configure: Re-generate.
* warning.m4: Enable -Wmissing-prototypes.
2020-03-08 Tom Tromey <tom@tromey.com>
* gdb_binary_search.h: Fix two typos.
2020-03-06 Andrew Burgess <andrew.burgess@embecosm.com>
* .dir-locals.el: New file.
2020-03-05 Vyacheslav Petrishchev <vyachemail@gmail.com>
* configure.ac: Added call development.sh.
* configure: Regenerate.
2020-03-05 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
* .gitattributes: New file.
2020-03-03 Simon Marchi <simon.marchi@efficios.com>
* Makefile.in: Re-generate.
2020-02-28 Sergio Durigan Junior <sergiodj@redhat.com>
* gdb-dlfcn.h (gdb_dlopen): Update comment.
2020-02-19 Andrew Burgess <andrew.burgess@embecosm.com>
* configure: Regenerate.
2020-02-14 Tom Tromey <tom@tromey.com>
* common-defs.h: Change path to gnulib/config.h.
2020-02-13 Simon Marchi <simon.marchi@efficios.com>
* Makefile.am: Rename source files from .c to .cc.
(CC, CFLAGS): Don't override.
(AM_CFLAGS): Rename to ...
(AM_CXXFLAGS): ... this.
* Makefile.in: Re-generate.
* %.c: Rename to %.cc.
2020-02-11 Simon Marchi <simon.marchi@efficios.com>
* configure: Re-generate.
2020-02-11 Simon Marchi <simon.marchi@efficios.com>
* warning.m4: Add -Wstrict-null-sentinel.
* configure: Re-generate.
2020-02-11 Simon Marchi <simon.marchi@efficios.com>
* warning.m4: Move here, from gdb/warning.m4.
* acinclude.m4: Update warning.m4 path.
* Makefile.in: Re-generate.
2020-02-11 Simon Marchi <simon.marchi@efficios.com>
* acinclude.m4: Include ../gdb/warning.m4.
* configure.ac: Use AM_GDB_WARNINGS.
* Makefile.am: Set AM_CFLAGS to WARN_CFLAGS and WERROR_CFLAGS.
* Makefile.in: Re-generate.
* configure: Re-generate.
2020-02-10 Tom de Vries <tdevries@suse.de>
* environ.c (gdb_environ::set): Cast concat NULL sentinel to char *.
2020-01-24 Christian Biesinger <cbiesinger@google.com>
* thread-pool.c (set_thread_name): Add an overload for the NetBSD
version of pthread_setname_np.
2020-01-17 Pedro Alves <palves@redhat.com>
* Makefile.am: Append CXX_DIALECT to CXX.
* Makefile.in: Regenerate.
2020-01-17 Pedro Alves <palves@redhat.com>
* configure.ac: Generate config.h instead of support-config.h.
* common-defs.h: Include <gdbsupport/config.h> instead of
<gdbsupport/support-config.h>.
* Makefile.in: Regenerate.
* configure: Regenerate.
2020-01-14 Tom Tromey <tom@tromey.com>
* Makefile.in: Rebuild.
* Makefile.am (check-defines): New target.
* check-defines.el: New file.
2020-01-14 Tom Tromey <tom@tromey.com>
* configure, Makefile.in, aclocal.m4, common.m4, config.in:
Rebuild.
* common.m4 (GDB_AC_COMMON): Move many checks from
gdb/configure.ac.
* acinclude.m4: Include bfd.m4, ptrace.m4.
2020-01-14 Tom Tromey <tom@tromey.com>
* common-defs.h: Add GDBSERVER case. Update includes.
* acinclude.m4, aclocal.m4, config.in, configure, configure.ac,
Makefile.am, Makefile.in, README: New files.
* Moved from ../gdb/gdbsupport/
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