Commit Graph

2127 Commits

Author SHA1 Message Date
Tom Tromey 4057dfde49 Create dwarf2/comp-unit.[ch]
This creates the new files dwarf2/comp-unit.[ch], moving
comp_unit_head and helpers to those files.  A couple of functions are
turned into methods, because it was convenient to do so now.

2020-02-08  Tom Tromey  <tom@tromey.com>

	* Makefile.in (COMMON_SFILES): Add dwarf2/comp-unit.c.
	* dwarf2/read.c (struct comp_unit_head): Move to
	dwarf2/comp-unit.h.
	(enum class rcuh_kind): Move to comp-unit.h.
	(get_cu_length, offset_in_cu_p): Now methods on comp_unit_head.
	(read_comp_unit_head, error_check_comp_unit_head)
	(read_and_check_comp_unit_head): Move to comp-unit.c.
	(read_offset, dwarf_unit_type_name): Likewise.
	(create_debug_type_hash_table, read_cutu_die_from_dwo)
	(cutu_reader::cutu_reader, read_call_site_scope)
	(find_partial_die, follow_die_offset): Update.
	* dwarf2/comp-unit.h: New file, from dwarf2read.c.

Change-Id: Id961b9674c0081ed061083c8152c38b27b27388a
2020-02-08 13:43:24 -07:00
Tom Tromey 8fdd972c30 Move DWARF line_header to new file
This moves the line_header class to a pair of new files, making
dwarf2/read.c somewhat smaller.

2020-02-08  Tom Tromey  <tom@tromey.com>

	* dwarf2/read.h (dwarf_line_debug): Declare.
	* Makefile.in (COMMON_SFILES): Add dwarf2/line-header.c.
	* dwarf2/read.c: Move line_header code to new files.
	(dwarf_line_debug): No longer static.
	* dwarf2/line-header.c: New file.
	* dwarf2/line-header.h: New file.

Change-Id: I8d9d8a2398b4e888e20cc5dd68d041c28b5a06e3
2020-02-08 13:43:24 -07:00
Tom Tromey 82ca895718 Move DWARF code to dwarf2/ subdirectory
This moves all the remaining DWARF code to the new dwarf2
subdirectory.  This is just a simple renaming, with updates to
includes as needed.

gdb/ChangeLog
2020-02-08  Tom Tromey  <tom@tromey.com>

	* dwarf2/expr.c: Rename from dwarf2expr.c.
	* dwarf2/expr.h: Rename from dwarf2expr.h.
	* dwarf2/frame-tailcall.c: Rename from dwarf2-frame-tailcall.c.
	* dwarf2/frame-tailcall.h: Rename from dwarf2-frame-tailcall.h.
	* dwarf2/frame.c: Rename from dwarf2-frame.c.
	* dwarf2/frame.h: Rename from dwarf2-frame.h.
	* dwarf2/index-cache.c: Rename from dwarf-index-cache.c.
	* dwarf2/index-cache.h: Rename from dwarf-index-cache.h.
	* dwarf2/index-common.c: Rename from dwarf-index-common.c.
	* dwarf2/index-common.h: Rename from dwarf-index-common.h.
	* dwarf2/index-write.c: Rename from dwarf-index-write.c.
	* dwarf2/index-write.h: Rename from dwarf-index-write.h.
	* dwarf2/loc.c: Rename from dwarf2loc.c.
	* dwarf2/loc.h: Rename from dwarf2loc.h.
	* dwarf2/read.c: Rename from dwarf2read.c.
	* dwarf2/read.h: Rename from dwarf2read.h.
	* dwarf2/abbrev.c, aarch64-tdep.c, alpha-tdep.c,
	amd64-darwin-tdep.c, arc-tdep.c, arm-tdep.c, bfin-tdep.c,
	compile/compile-c-symbols.c, compile/compile-cplus-symbols.c,
	compile/compile-loc2c.c, cris-tdep.c, csky-tdep.c, findvar.c,
	gdbtypes.c, guile/scm-type.c, h8300-tdep.c, hppa-bsd-tdep.c,
	hppa-linux-tdep.c, i386-darwin-tdep.c, i386-linux-tdep.c,
	i386-tdep.c, iq2000-tdep.c, m32c-tdep.c, m68hc11-tdep.c,
	m68k-tdep.c, microblaze-tdep.c, mips-tdep.c, mn10300-tdep.c,
	msp430-tdep.c, nds32-tdep.c, nios2-tdep.c, or1k-tdep.c,
	riscv-tdep.c, rl78-tdep.c, rs6000-tdep.c, rx-tdep.c, s12z-tdep.c,
	s390-tdep.c, score-tdep.c, sh-tdep.c, sparc-linux-tdep.c,
	sparc-tdep.c, sparc64-linux-tdep.c, sparc64-tdep.c, tic6x-tdep.c,
	tilegx-tdep.c, v850-tdep.c, xstormy16-tdep.c, xtensa-tdep.c:
	Update.
	* Makefile.in (COMMON_SFILES): Update.
	(HFILES_NO_SRCDIR): Update.

Change-Id: Ied9ce1436cd27ac4a4cffef10ec92e396f181928
2020-02-08 13:40:59 -07:00
Tom Tromey 162dce5526 Create dwarf2/attribute.[ch]
This moves the attribute-related code out of dwarf2read.c and into the
new files dwarf2/attribute.[ch].

gdb/ChangeLog
2020-02-08  Tom Tromey  <tom@tromey.com>

	* dwarf2read.c (struct attribute, DW_STRING)
	(DW_STRING_IS_CANONICAL, DW_UNSND, DW_BLOCK, DW_SND, DW_ADDR)
	(DW_SIGNATURE, struct dwarf_block, attr_value_as_address)
	(attr_form_is_block, attr_form_is_section_offset)
	(attr_form_is_constant, attr_form_is_ref): Move.
	* dwarf2/attribute.h: New file.
	* dwarf2/attribute.c: New file, from dwarf2read.c.
	* Makefile.in (COMMON_SFILES): Add dwarf2/attribute.c.

Change-Id: I1ea4c146256a1b9e38b66f1c605d782a14eeded7
2020-02-08 13:40:56 -07:00
Tom Tromey 3054dd5470 Create dwarf2/abbrev.[ch]
This moves the abbrev table code out of dwarf2read.c and into new
files dwarf2/abbrev.[ch].

gdb/ChangeLog
2020-02-08  Tom Tromey  <tom@tromey.com>

	* dwarf2read.c (abbrev_table_up, struct abbrev_info)
	(struct attr_abbrev, ABBREV_HASH_SIZE, struct abbrev_table):
	Move.
	(read_cutu_die_from_dwo, build_type_psymtabs_1): Update.
	(abbrev_table::alloc_abbrev, abbrev_table::add_abbrev)
	(abbrev_table::lookup_abbrev, abbrev_table_read_table): Move to
	abbrev.c.
	* dwarf2/abbrev.h: New file.
	* dwarf2/abbrev.c: New file, from dwarf2read.c.
	* Makefile.in (COMMON_SFILES): Add dwarf2/abbrev.c.

Change-Id: I87911bc5297de4407587ca849fef8e8d19136c30
2020-02-08 13:40:55 -07:00
Tom Tromey 2c86cff96f Create dwarf2/section.[ch]
This moves some section-handling code from dwarf2read.c into new
files, dwarf2/section.[ch].

gdb/ChangeLog
2020-02-08  Tom Tromey  <tom@tromey.com>

	* dwarf2read.h (struct dwarf2_section_info, dwarf2_read_section):
	Move to dwarf2/section.h.
	* dwarf2read.c (get_containing_section, get_section_bfd_owner)
	(get_section_bfd_section, get_section_name)
	(get_section_file_name, get_section_id, get_section_flags)
	(dwarf2_section_empty_p, dwarf2_read_section): Moe to
	dwarf2/section.c.
	* dwarf2/section.h: New file.
	* dwarf2/section.c: New file, from dwarf2read.c.
	* Makefile.in (COMMON_SFILES): Add dwarf2/section.c.

Change-Id: I9f8498094cf99d9521e9481622ce8adbd453daf4
2020-02-08 13:40:54 -07:00
Tom Tromey f4382c45a4 Create dwarf2/leb.[ch]
This moves some scalar-unpacking code into a couple of new files,
dwarf2/leb.h and dwarf2/leb.c.

gdb/ChangeLog
2020-02-08  Tom Tromey  <tom@tromey.com>

	* dwarf2read.h (read_unsigned_leb128): Don't declare.
	* dwarf2read.c (read_1_byte, read_1_signed_byte, read_2_bytes)
	(read_2_signed_bytes, read_3_bytes, read_4_bytes)
	(read_4_signed_bytes, read_8_bytes): Move to dwarf2/leb.h.
	(read_unsigned_leb128, read_signed_leb128): Move to dwarf2/leb.c.
	* dwarf2/leb.h: New file, from dwarf2read.c.
	* dwarf2/leb.c: New file, from dwarf2read.c.
	* dwarf2-frame.c (read_1_byte, read_4_bytes, read_8_bytes):
	Remove.
	* Makefile.in (CONFIG_SRC_SUBDIR): Add dwarf2.
	(COMMON_SFILES): Add dwarf2/leb.c.

Change-Id: Idd19647686c8f959d226a95fdfca4db47c6e96d0
2020-02-08 13:40:54 -07:00
Tom Tromey 919adfe840 Move gdbserver to top level
This patch moves gdbserver to the top level.

This patch is as close to a pure move as possible -- gdbserver still
builds its own variant of gnulib and gdbsupport.  Changing this will
be done in a separate patch.

[v2] Note that, per Simon's review comment, this patch changes the
tree so that gdbserver is not built for or1k or score.  This makes
sense, because there is apparently not actually a gdbserver port here.

[v3] This version of the patch also splits out some configury into a
new file, gdbserver/configure.host, so that the top-level configure
script can simply rely on it in order to decide whether gdbserver
should be built.

[v4] This version adds documentation and removes some unnecessary
top-level dependencies.

[v5] Update docs to mention "make all-gdbserver" and change how
top-level configure decides whether to build gdbserver, switching to a
single, shared script.

Tested by the buildbot.

ChangeLog
2020-02-07  Tom Tromey  <tom@tromey.com>
	    Pedro Alves  <palves@redhat.com>

	* src-release.sh (GDB_SUPPORT_DIRS): Add gdbserver.
	* gdbserver: New directory, moved from gdb/gdbserver.
	* configure.ac (host_tools): Add gdbserver.
	Only build gdbserver on certain systems.
	* Makefile.in, configure: Rebuild.
	* Makefile.def (host_modules, dependencies): Add gdbserver.
	* MAINTAINERS: Add gdbserver.

gdb/ChangeLog
2020-02-07  Tom Tromey  <tom@tromey.com>

	* README: Update gdbserver documentation.
	* gdbserver: Move to top level.
	* configure.tgt (build_gdbserver): Remove.
	* configure.ac: Remove --enable-gdbserver.
	* configure: Rebuild.
	* Makefile.in (distclean): Don't mention gdbserver.

Change-Id: I826b7565b54604711dc7a11edea0499cd51ff39e
2020-02-07 08:42:25 -07:00
Tom Tromey 975f45b7e1 Don't link gdb twice against libiberty
I noticed that gdb includes libiberty twice in its link line.  I don't
think there's a need for this, so this patch removes one of the
references.

gdb/ChangeLog
2020-01-14  Tom Tromey  <tom@tromey.com>

	* Makefile.in (CLIBS): Remove second use of $(LIBIBERTY).

Change-Id: I43bb7100660867081f937c67ea70ff751c62bbfb
2020-01-14 16:25:04 -07:00
Tom Tromey 01027315f5 Move gdbsupport to the top level
This patch moves the gdbsupport directory to the top level.  This is
the next step in the ongoing project to move gdbserver to the top
level.

The bulk of this patch was created by "git mv gdb/gdbsupport gdbsupport".

This patch then adds a build system to gdbsupport and wires it into
the top level.  Then it changes gdb to use the top-level build.

gdbserver, on the other hand, is not yet changed.  It still does its
own build of gdbsupport.

ChangeLog
2020-01-14  Tom Tromey  <tom@tromey.com>

	* src-release.sh (GDB_SUPPORT_DIRS): Add gdbsupport.
	* MAINTAINERS: Add gdbsupport.
	* configure: Rebuild.
	* configure.ac (configdirs): Add gdbsupport.
	* gdbsupport: New directory, move from gdb/gdbsupport.
	* Makefile.def (host_modules, dependencies): Add gnulib.
	* Makefile.in: Rebuild.

gdb/ChangeLog
2020-01-14  Tom Tromey  <tom@tromey.com>

	* nat/x86-linux-dregs.c: Include configh.h.
	* nat/linux-ptrace.c: Include configh.h.
	* nat/linux-btrace.c: Include configh.h.
	* defs.h: Include config.h, bfd.h.
	* configure.ac: Don't source common.host.
	(CONFIG_OBS, CONFIG_SRCS): Remove gdbsupport files.
	* configure: Rebuild.
	* acinclude.m4: Update path.
	* Makefile.in (SUPPORT, LIBSUPPORT, INCSUPPORT): New variables.
	(CONFIG_SRC_SUBDIR): Remove gdbsupport.
	(INTERNAL_CFLAGS_BASE): Add INCSUPPORT.
	(CLIBS): Add LIBSUPPORT.
	(CDEPS): Likewise.
	(COMMON_SFILES): Remove gdbsupport files.
	(HFILES_NO_SRCDIR): Likewise.
	(stamp-version): Update path to create-version.sh.
	(ALLDEPFILES): Remove gdbsupport files.

gdb/gdbserver/ChangeLog
2020-01-14  Tom Tromey  <tom@tromey.com>

	* server.h: Include config.h.
	* gdbreplay.c: Include config.h.
	* configure: Rebuild.
	* configure.ac: Don't source common.host.
	* acinclude.m4: Update path.
	* Makefile.in (INCSUPPORT): New variable.
	(INCLUDE_CFLAGS): Add INCSUPPORT.
	(SFILES): Update paths.
	(version-generated.c): Update path to create-version.sh.
	(gdbsupport/%-ipa.o, gdbsupport/%.o): Update paths.

gdbsupport/ChangeLog
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/

Change-Id: I07632e7798635c1bab389bf885971e584fb4bb78
2020-01-14 16:25:02 -07:00
Pedro Alves 121b3efd49 Add "info connections" command, "info inferiors" connection number/string
This commit extends the CLI a bit for multi-target, in three ways.

#1 - New "info connections" command.

This is a new command that lists the open connections (process_stratum
targets).  For example, if you're debugging two remote connections, a
couple local/native processes, and a core dump, all at the same time,
you might see something like this:

 (gdb) info connections
   Num  What                     Description
   1    remote 192.168.0.1:9999  Remote serial target in gdb-specific protocol
   2    remote 192.168.0.2:9998  Remote serial target in gdb-specific protocol
 * 3    native                   Native process
   4    core                     Local core dump file

#2 - New "info inferiors" "Connection" column

You'll also see a new matching "Connection" column in "info
inferiors", showing you which connection an inferior is bound to:

 (gdb) info inferiors
   Num  Description       Connection                   Executable
   1    process 18526     1 (remote 192.168.0.1:9999)  target:/tmp/a.out
   2    process 18531     2 (remote 192.168.0.2:9998)  target:/tmp/a.out
   3    process 19115     3 (native)                   /tmp/prog1
   4    process 6286      4 (core)                     myprogram
 * 5    process 19122     3 (native)                   /bin/hello

#3 - Makes "add-inferior" show the inferior's target connection

"add-inferior" now shows you the connection you've just bound the
inferior to, which is the current process_stratum target:

 (gdb) add-inferior
 [New inferior 2]
 Added inferior 2 on connection 1 (extended-remote localhost:2346)

gdb/ChangeLog:
2020-01-10  Pedro Alves  <palves@redhat.com>

	* Makefile.in (COMMON_SFILES): Add target-connection.c.
	* inferior.c (uiout_field_connection): New function.
	(print_inferior): Add new "connection-id" column.
	(add_inferior_command): Show connection number/string of added
	inferior.
	* process-stratum-target.h
	(process_stratum_target::connection_string): New virtual method.
	(process_stratum_target::connection_number): New field.
	* remote.c (remote_target::connection_string): New override.
	* target-connection.c: New file.
	* target-connection.h: New file.
	* target.c (decref_target): Remove process_stratum targets from
	the connection list.
	(target_stack::push): Add process_stratum targets to the
	connection list.

gdb/testsuite/ChangeLog:
2020-01-10  Pedro Alves  <palves@redhat.com>

	* gdb.base/kill-detach-inferiors-cmd.exp: Adjust expected output
	of "add-inferior".
	* gdb.base/quit-live.exp: Likewise.
	* gdb.base/remote-exec-file.exp: Likewise.
	* gdb.guile/scm-progspace.exp: Likewise.
	* gdb.linespec/linespec.exp: Likewise.
	* gdb.mi/new-ui-mi-sync.exp: Likewise.
	* gdb.mi/user-selected-context-sync.exp: Likewise.
	* gdb.multi/multi-target.exp (setup): Add "info connection" and
	"info inferiors" tests.
	* gdb.multi/remove-inferiors.exp: Adjust expected output of
	"add-inferior".
	* gdb.multi/watchpoint-multi.exp: Likewise.
	* gdb.python/py-inferior.exp: Likewise.
	* gdb.server/extended-remote-restart.exp: Likewise.
	* gdb.threads/fork-plus-threads.exp: Adjust expected output of
	"info inferiors".
	* gdb.threads/forking-threads-plus-breakpoint.exp: Likewise.
	* gdb.trace/report.exp: Likewise.
2020-01-10 20:06:14 +00:00
Eli Zaretskii 559e7e5056 Improve process exit status macros on MinGW
When a Windows program is terminated by a fatal exception, its exit
code is the value of that exception, as defined by the various
EXCEPTION_* symbols in the Windows API headers.  This commit emulates
WTERMSIG etc. by translating the fatal exception codes to more-or-less
equivalent Posix signals.

gdb/ChangeLog:
2020-01-06  Eli Zaretskii  <eliz@gnu.org>
	    Pedro Alves  <palves@redhat.com>

	* Makefile.in (COMMON_SFILES): Add gdbsupport/gdb_wait.c.
	* windows-tdep.c: New enumeration of WINDOWS_SIG* signals.
	(windows_gdb_signal_to_target): New function, uses the above
	enumeration to convert GDB internal signal codes to equivalent
	Windows codes.
	(windows_init_abi): Call set_gdbarch_gdb_signal_to_target.
	* windows-nat.c: Include "gdb_wait.h".
	(get_windows_debug_event): Extract the fatal exception from the
	exit status and convert to the equivalent Posix signal number.
	* cli/cli-cmds.c (exit_status_set_internal_vars): Account for the
	possibility that WTERMSIG returns GDB_SIGNAL_UNKNOWN.
	* gdbsupport/gdb_wait.c: New file, implements
	windows_status_to_termsig.
	* gdbsupport/gdb_wait.h (WIFEXITED, WIFSIGNALED, WEXITSTATUS)
	(WTERMSIG) [__MINGW32__]: Separate definitions for MinGW.

gdb/gdbserver/ChangeLog:
2020-01-06  Eli Zaretskii  <eliz@gnu.org>
	    Pedro Alves  <palves@redhat.com>

	* win32-low.c (get_child_debug_event): Extract the fatal exception
	from the exit status and convert to the equivalent Posix signal
	number.
	(win32_wait): Allow TARGET_WAITKIND_SIGNALLED status as well.
	* Makefile.in (OBS, SFILES): Add gdb_wait.[co].
2020-01-06 11:51:54 +00:00
Hannes Domani 48189beca8 Fix install-strip for cross-compilation
The variable INSTALL_PROGRAM_ENV sets up STRIPPROG for the cross-compiler.

If this is not done, the host 'strip' is used, and fails:

/bin/sh /c/src/repos/binutils-gdb.git/install-sh -c -s gdb.exe \
  /gdb/gdb64-git/bin/$transformed_name.exe
strip.exe:C:/gdb/gdb64-git/bin/_inst.33599_: file format not recognized

With this change, it's fine:

STRIPPROG='x86_64-w64-mingw32-strip' \
  /bin/sh /c/src/repos/binutils-gdb.git/install-sh -c -s gdb.exe \
  /gdb/gdb64-git/bin/$transformed_name.exe

gdb/ChangeLog:

2020-01-01  Hannes Domani  <ssbssa@yahoo.de>

	* Makefile.in: Use INSTALL_PROGRAM_ENV.

gdb/gdbserver/ChangeLog:

2020-01-01  Hannes Domani  <ssbssa@yahoo.de>

	* Makefile.in: Use INSTALL_PROGRAM_ENV.
2020-01-01 21:51:33 +01:00
Joel Brobecker b811d2c292 Update copyright year range in all GDB files.
gdb/ChangeLog:

        Update copyright year range in all GDB files.
2020-01-01 10:20:53 +04:00
Tom Tromey db3ad2f031 Ravenscar port for RISC-V
This adds Ravenscar support to gdb for RISC-V targets.

This was tested internally using AdaCore's test suite and qemu.

gdb/ChangeLog
2019-12-12  Tom Tromey  <tromey@adacore.com>

	* Makefile.in (ALL_TARGET_OBS): Add riscv-ravenscar-thread.o.
	(HFILES_NO_SRCDIR): Add riscv-ravenscar-thread.h.
	(ALLDEPFILES): Add riscv-ravenscar-thread.c.
	* configure.tgt (riscv-*-*): Add riscv-ravenscar-thread.o.
	* riscv-ravenscar-thread.c: New file.
	* riscv-ravenscar-thread.h: New file.
	* riscv-tdep.c (riscv_gdbarch_init): Call
	register_riscv_ravenscar_ops.

Change-Id: Ic47a3b3cfbbe80c2c82a5f48d2e0481845cac8b0
2019-12-12 11:47:40 -07:00
Simon Marchi 610cfd618e Compare iterators, not values, in filtered_iterator::operator{==,!=}
The == and != operators on filtered_iterator are not doing the
right thing, they compare values pointed by the wrapped iterators
instead of comparing the iterators themselves.

As a result, operator== will return true if the two iterators point to
two equal values at different positions.  operator!= will fail
similarly.

Also, this causes it to deference past-the-end iterators when doing.
For example, in

  for (iter = ...; iter != end_iter; ++iter)

the != comparison dereferences end_iter.  I don't think this should
happen.

I don't think it's a problem today, given that we only use
filtered_iterator to wrap linked lists of threads and inferiors.
Dereferencing past-the-end iterators of these types is not fatal, it
just returns NULL, which is not a value we otherwise find in the lists.
But in other contexts, it could become problematic.

I have added a simple self test that fails without the fix applied.

gdb/ChangeLog:

	* filtered-iterator.h (filtered_iterator) <operator==,
	operator!=>: Compare wrapped iterators, not wrapped pointers.
	* Makefile.in (SUBDIR_UNITTESTS_SRCS): Add
	unittests/filtered_iterator-selftests.c.
	* unittests/filtered_iterator-selftests.c: New file.
2019-12-04 13:27:56 -05:00
Tom Tromey 517d261dfa Fix latent bug in tui_copy_source_line
tui_copy_source_line has a bug, where it can advance past the
terminating \0 in its input string.  This patch fixes the bug and adds
a test case for this function.

gdb/ChangeLog
2019-12-01  Tom Tromey  <tom@tromey.com>

	* tui/tui-winsource.c (tui_copy_source_line): Don't advance past
	\0.
	* unittests/tui-selftests.c: New file.
	* Makefile.in (SUBDIR_UNITTESTS_SRCS): Add tui-selftests.c.

Change-Id: I46cdabe6e57549983149b8f640cda5edd16fa260
2019-12-01 12:29:50 -07:00
Tom Tromey d55c9a6847 Demangle minsyms in parallel
This patch introduces a simple parallel for_each and changes the
minimal symbol reader to use it when computing the demangled name for
a minimal symbol.  This yields a speedup when reading minimal symbols.

2019-11-26  Christian Biesinger  <cbiesinger@google.com>
	    Tom Tromey  <tom@tromey.com>

	* minsyms.c (minimal_symbol_reader::install): Use
	parallel_for_each.
	* gdbsupport/parallel-for.h: New file.
	* Makefile.in (HFILES_NO_SRCDIR): Add gdbsupport/parallel-for.h.

Change-Id: I220341f70e94dd02df5dd424272c50a5afb64978
2019-11-26 14:02:58 -07:00
Christian Biesinger a0b57563b1 Implement a thread pool
This adds a simple thread pool to gdb.  In the end, this seemed
preferable to the approach taken in an earlier version of this series;
namely, starting threads in the parallel-foreach implementation.  This
approach reduces the overhead of starting new threads, and also lets
the user control (in a subsequent patch) exactly how many worker
threads are running.

gdb/ChangeLog
2019-11-26  Christian Biesinger  <cbiesinger@google.com>
	    Tom Tromey  <tom@tromey.com>

	* gdbsupport/thread-pool.h: New file.
	* gdbsupport/thread-pool.c: New file.
	* Makefile.in (COMMON_SFILES): Add thread-pool.c.
	(HFILES_NO_SRCDIR): Add thread-pool.h.

Change-Id: I597bb642780cb9d578ca92373d2a638efb44fe52
2019-11-26 14:02:57 -07:00
Tom Tromey 9411c49ecc Introduce run_on_main_thread
This introduces a way for a callback to be run on the main thread.

gdb/ChangeLog
2019-11-26  Tom Tromey  <tom@tromey.com>

	* run-on-main-thread.c: New file.
	* run-on-main-thread.h: New file.
	* unittests/main-thread-selftests.c: New file.
	* Makefile.in (SUBDIR_UNITTESTS_SRCS): Add
	main-thread-selftests.c.
	(HFILES_NO_SRCDIR): Add run-on-main-thread.h.
	(COMMON_SFILES): Add run-on-main-thread.c.

Change-Id: I16ef82f0564e9f8a524bdc64cb31df79a988ad9f
2019-11-26 14:02:57 -07:00
Tom Tromey 21987b9c06 Add RAII class for blocking gdb signals
This adds configury support and an RAII class that can be used to
temporarily block signals that are used by gdb.  (This class is not
used in this patch, but it split out for easier review.)

The idea of this patch is that these signals should only be delivered
to the main thread.  So, when creating a background thread, they are
temporarily blocked; the blocked state is inherited by the new thread.

The sigprocmask man page says:

    The use of sigprocmask() is unspecified in a multithreaded
    process; see pthread_sigmask(3).

This patch changes gdb to use pthread_sigmask when appropriate, by
introducing a convenience define.

I've updated gdbserver as well, because I had to touch gdbsupport, and
because the threading patches will make it link against the thread
library.

I chose not to touch the NTO code, because I don't know anything about
that platform and because I cannot test it.

Finally, this modifies an existing spot in the Guile layer to use the
new facility.

gdb/ChangeLog
2019-11-26  Tom Tromey  <tom@tromey.com>

	* gdbsupport/signals-state-save-restore.c (original_signal_mask):
	Remove comment.
	(save_original_signals_state, restore_original_signals_state): Use
	gdb_sigmask.
	* linux-nat.c (block_child_signals, restore_child_signals_mask)
	(_initialize_linux_nat): Use gdb_sigmask.
	* guile/guile.c (_initialize_guile): Use block_signals.
	* Makefile.in (HFILES_NO_SRCDIR): Add gdb-sigmask.h.
	* gdbsupport/gdb-sigmask.h: New file.
	* event-top.c (async_sigtstp_handler): Use gdb_sigmask.
	* cp-support.c (gdb_demangle): Use gdb_sigmask.
	* gdbsupport/common.m4 (GDB_AC_COMMON): Check for
	pthread_sigmask.
	* configure, config.in: Rebuild.
	* gdbsupport/block-signals.h: New file.

gdb/gdbserver/ChangeLog
2019-11-26  Tom Tromey  <tom@tromey.com>

	* remote-utils.c (block_unblock_async_io): Use gdb_sigmask.
	* linux-low.c (linux_wait_for_event_filtered, linux_async): Use
	gdb_sigmask.
	* configure, config.in: Rebuild.

Change-Id: If3f37dc57dd859c226e9e4d79458a0514746e8c6
2019-11-26 14:02:57 -07:00
Tom Tromey 5e03027845 Add configure check for std::thread
This adds a configure check for std::thread.  This is needed because
std::thread is not available on some systems, like some versions of
mingw and DJGPP.

This also adds configury to make sure that a threaded gdb links
against the correct threading library (-lpthread or the like), and
passes the right flags (e.g., -pthread) to the compilations.

Note that this also links gdbserver against the thread library.  This
is not strictly necessary at this point in the series, but a later
patch will change gdbsupport to use pthread_sigmask, at which point
this will be needed.

gdb/ChangeLog
2019-11-26  Tom Tromey  <tom@tromey.com>

	* acinclude.m4: Include ax_pthread.m4.
	* Makefile.in (PTHREAD_CFLAGS, PTHREAD_LIBS): New variables.
	(INTERNAL_CFLAGS_BASE): Use PTHREAD_CFLAGS.
	(CLIBS): Use PTHREAD_LIBS.
	(aclocal_m4_deps): Add ax_pthread.m4.
	* config.in, configure: Rebuild.
	* gdbsupport/common.m4 (GDB_AC_COMMON): Check for std::thread.

gdb/gdbserver/ChangeLog
2019-11-26  Tom Tromey  <tom@tromey.com>

	* Makefile.in (PTHREAD_CFLAGS, PTHREAD_LIBS): New variables.
	(INTERNAL_CFLAGS_BASE): Use PTHREAD_CFLAGS.
	(GDBSERVER_LIBS): Use PTHREAD_LIBS.
	* acinclude.m4: Include ax_pthread.m4.
	* config.in, configure: Rebuild.

Change-Id: I00ec55db6077f2615421a93461fc3be57e916aa0
2019-11-26 14:02:57 -07:00
Christian Biesinger f10ffa4146 Rename demangle.c to gdb-demangle.c, and some cleanup
In addition to renaming demangle.c to match the header file naming,
this also makes is_cplus_marker return a bool and removes a duplicate
declaration of "bool demangle" from symtab.h.

gdb/ChangeLog:

2019-11-21  Christian Biesinger  <cbiesinger@google.com>

	* Makefile.in: Update.
	* demangle.c: Rename to...
	* gdb-demangle.c: ..this.
	(is_cplus_marker): Change return type to bool.
	(_initialize_demangler): Rename to...
	(_initialize_gdb_demangle): ...this.
	* gdb-demangle.h (is_cplus_marker): Change return type to bool.
	* symtab.h (demangle): Remove declaration; instead include
	gdb-demangle.h.

Change-Id: I83c3b3f7ee71b2bf6f5b5d0f9eb1d4b5208f2a97
2019-11-21 16:36:00 -06:00
Christian Biesinger cd850b40cc Use gnulib's strerror_r on MinGW
There is no need to keep mingw-strerror around; we can just always use
the code from posix-strerror. The main reason we had that code, it
seems, is to handle winsock error codes, but gnulib's version
handles those.

Unfortunately the code can't be moved into common-utils.c because
libinproctrace.so uses common-utils but not gnulib.

gdb/ChangeLog:

2019-11-15  Christian Biesinger  <cbiesinger@google.com>

	* Makefile.in: Replace {posix,mingw}-strerror.c with safe-strerror.c.
	* configure: Regenerate.
	* configure.ac: Don't source common.host.
	* gdbsupport/common.host: Remove.
	* gdbsupport/mingw-strerror.c: Remove.
	* gdbsupport/posix-strerror.c: Rename to...
	* gdbsupport/safe-strerror.c: ...this.

gdb/gdbserver/ChangeLog:

2019-11-15  Christian Biesinger  <cbiesinger@google.com>

	* Makefile.in: Add safe-strerror.c.
	* configure: Regenerate.
	* configure.ac: Don't source common.host.

Change-Id: I9e6d8a752fc398784201f370cafee65e0ea05474
2019-11-15 13:31:36 -08:00
Andrew Burgess cf57ad6d61 gdb_vecs.h: Avoid self move assign
While working on another patch I ran into an issue with
unordered_remove (in gdb_vecs.h), where removing the last item of the
vector can cause a self move assign.

When compiling the C++ standard library in debug mode (with
-D_GLIBCXX_DEBUG=1) this causes an error to trigger.

I've fixed the issue in this patch and provided a unit test.

The provided unit test includes an assignment operator which checks
for self move assign, this removes the need to compile with
-D_GLIBCXX_DEBUG=1 in order to spot the bug.  If you're keen to see
the error reported from the C++ standard library then remove operator=
from the unit test and recompile GDB with -D_GLIBCXX_DEBUG=1.

gdb/ChangeLog:

	* Makefile.in (SUBDIR_UNITTESTS_SRCS): Add new file to the list.
	* unittests/vec-utils-selftests.c: New file.
	* gdbsupport/gdb_vecs.h (unordered_remove): Avoid self move assign.

Change-Id: I80247b20cd5212038117db7412865f5e6a9257cd
2019-11-10 20:09:59 +00:00
Christian Biesinger 35e65c49df Replace bsearch with a std::lower_bound-based search
This is more type-safe and can be faster due to inlining and
avoiding overhead from calling through a function pointer.

gdb/ChangeLog:

2019-10-29  Christian Biesinger  <cbiesinger@google.com>

	* Makefile.in (HFILES_NO_SRCDIR): Add gdb_binary_search.h.
	* dwarf2-frame.c (bsearch_fde_cmp): Update.
	(dwarf2_frame_find_fde): Replace bsearch with gdb::binary_search.
	* gdbsupport/gdb_binary_search.h: New file.

Change-Id: I07e0a0e333f4062b27fc68d3a3f24881ebc68fd4
2019-10-29 14:06:26 -05:00
Tom Tromey f16f7b7c74 Fix opcodes includes
Now that gdb can unconditionally use a -I pointing at the top of the
source tree, we can remove the ugly "../opcodes/" formulation that was
needed earlier.  This patch adds the -I and cleans up these includes.

gdb/ChangeLog
2019-10-23  Tom Tromey  <tom@tromey.com>

	* arc-tdep.c: Remove ".." from include.
	* frv-tdep.c: Remove ".." from include.
	* lm32-tdep.c: Remove ".." from include.
	* microblaze-tdep.c: Remove ".." from include.
	* or1k-tdep.h: Remove ".." from include.
	* s12z-tdep.c: Remove ".." from include.
	* Makefile.in (OPCODES_CFLAGS): Add comment.
	(TOP_CFLAGS): New variable.
	(INTERNAL_CFLAGS_BASE): Add TOP_CFLAGS.

Change-Id: I21428726d55f9fab0c9da90b56f6664f258cf91a
2019-10-23 15:16:49 -06:00
Tom Tromey 6999161a2a Move readline to the readline/readline subdirectory
readline turns out to be a bit of a stumbling block for the project to
move gdbsupport (and then gdbserver) to the top-level.

The issue is that readline headers are intended to be included with
names like "readline/readline.h".  To support this, gdb effectively
adds a -I option pointing to the top-level source directory -- but,
importantly, this option is not used when the system readline is used.

For gdbsupport, a -I option like this would always be needed, but that
in turn would break the system readline case.  This was PR build/17077,
fixed in commit a8a5dbcab8.

Previously, we had discussed this on the gdb-patches list in terms of
removing readline from the tree

    https://sourceware.org/ml/gdb-patches/2019-09/msg00317.html

However, Eli expressed some concerns, and Joel did as well (off-list).

Given those concerns, and the fact that a patch-free local readline is
relatively new in gdb (it was locally patched for years), I changed my
mind and decided to handle this situation by moving the readline
sources down a level.

That is, upstream readline is now in readline/readline, and the
top-level readline directory just contains the minimal configury
needed to build that.

This fixes the problem because, when gdb unconditionally adds a
-I$(top_srcdir), this will not find readline headers.  A separate -I
will be needed instead, which is exactly what's needed for
--with-system-readline.

gdb/ChangeLog
2019-10-23  Tom Tromey  <tom@tromey.com>

	* Makefile.in (READLINE_DIR): Update.

gdb/doc/ChangeLog
2019-10-23  Tom Tromey  <tom@tromey.com>

	* Makefile.in (READLINE_DIR): Update.

readline/ChangeLog
2019-10-23  Tom Tromey  <tom@tromey.com>

	Move old contents to readline/ subdirectory.
	* aclocal.m4, configure, configure.ac, .gitignore, Makefile.am,
	Makefile.in, README: New files.

Change-Id: Ice156a2ee09ea68722b48f64d97146d7428ea9e4
2019-10-23 15:16:48 -06:00
Christian Biesinger ccb1ba6229 Use libxxhash for hashing, if present
XXHash is faster than htab_hash_string:
------------------------------------------------------------
Benchmark                     Time           CPU Iterations
------------------------------------------------------------
BM_xxh3                      11 ns         11 ns   65887249
BM_xxh32                     19 ns         19 ns   36511877
BM_xxh64                     16 ns         16 ns   42964585
BM_hash_string              182 ns        182 ns    3853125
BM_iterative_hash            77 ns         77 ns    9087638

Unfortunately, XXH3 is still experimental (see
https://github.com/Cyan4973/xxHash#user-content-new-experimental-hash-algorithm)

However, regular XXH64 is still a lot faster than
htab_hash_string per my benchmark above. I used the
following string for the benchmark:
static constexpr char str[] = "_ZZZL13make_gdb_typeP7gdbarchP10tdesc_typeEN16gdb_type_creator19make_gdb_type_flagsEPK22tdesc_type_with_fieldsE19__PRETTY_FUNCTION__";

htab_hash_string is currently 4.35% + 7.98% (rehashing) of gdb
startup when attaching to Chrome's content_shell.

An additional 5.21% is spent in msymbol_hash, which does not use
this hash function. Unfortunately, since it has to lowercase the
string, it can't use this hash function.
BM_msymbol_hash                52 ns         52 ns   13281495

It may be worth investigating if strlen+XXHash is still faster than
htab_hash_string, which would make it easier to use in more places.

Debian ships xxhash as libxxhash{0,-dev}. Fedora ships it as xxhash-devel.

gdb/ChangeLog:

2019-10-22  Christian Biesinger  <cbiesinger@google.com>

	* Makefile.in: Link with libxxhash.
	* config.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Search for libxxhash.
	* utils.c (fast_hash): Use xxhash if present.

Change-Id: Icab218388b9f829522ed3977f04301ae6d4fc4ca
2019-10-22 11:47:24 -05:00
Tom Tromey a0a461e5b4 Fix creation of nm.h when configure is changed
My earlier patch -- commit c5adaa192 ("Fix creation of stamp-h by
gdb's configure script") -- broke the creation of nm.h.  In
particular, configure removes nm.h, so if you touch configure and
rebuild, nothing will re-create the link, breaking the build.

This patch fixes the bug, and also updates configure.ac to use
AC_CONFIG_LINKS, rather than the obsolete AC_LINK_FILES.

Finally, I noticed that gcore is in generated_files in the
Makefile.in.  I think this is incorrect, as generated_files is only
needed for files that can be the target of a #include.  So, this patch
removes it.

gdb/ChangeLog
2019-10-21  Tom Tromey  <tom@tromey.com>

	* configure.ac (nm.h): Conditionally create nm.h link.  Subst
	NM_H.   Use AC_CONFIG_LINKS.
	* configure: Rebuild.
	* Makefile.in (NM_H): New variable.
	(generated_files): Add NM_H.  Remove gcore.
	(nm.h, stamp-nmh): New targets.

Change-Id: I8dd539785d52455e85389425e4bb996c8a127a0e
2019-10-21 07:45:30 -06:00
Tom Tromey c5adaa1921 Fix creation of stamp-h by gdb's configure script
I happened to notice that "make" would always print:

    CONFIG_HEADERS=config.h:config.in \
      CONFIG_COMMANDS="default depdir" \
      CONFIG_FILES= \
      CONFIG_LINKS= \
      /bin/sh config.status
    config.status: creating config.h
    config.status: config.h is unchanged

on every rebuild.  This seems to have changed due to an autoconf
upgrade at some point in the past.  In the autoconf gdb uses now, it
works to use AC_CONFIG_HEADERS and then create the stamp file via the
"commands" argument.

This patch also fixes up Makefile.in to use the new-style
config.status invocation.  It's no longer necessary to pass the output
file names via environment variables.

gdb/ChangeLog
2019-10-17  Tom Tromey  <tromey@adacore.com>

	* configure: Rebuild.
	* configure.ac: Use AC_CONFIG_HEADERS.  Create stamp-h there, not
	in AC_CONFIG_FILES invocation.
	* Makefile.in (Makefile, data-directory/Makefile, stamp-h): Use
	new-style config.status invocation.

gdb/gdbserver/ChangeLog
2019-10-17  Tom Tromey  <tromey@adacore.com>

	* configure: Rebuild.
	* configure.ac: Use AC_CONFIG_HEADERS.  Create stamp-h there, not
	in AC_CONFIG_FILES invocation.
	* Makefile.in (stamp-h, Makefile): Use new-style config.status
	invocation.

Change-Id: Ia0530d1c5b9756812d29ddb8dc1062326155e61e
2019-10-17 13:21:24 -06:00
Christian Biesinger fec4e896d6 Create xml-builtin.h to declare xml_builtins
xml-builtin.c only has character arrays and no dependencies, so this
creates a simple header file for that purpose so that gdbserver
can include that instead of re-declaring xml_builtin.

Despite the name, feature_to_c.sh is already specific to xml_builtins
(it hardcodes the variable name), so making it always output the
include for xml-builtin.h seems fine.

gdb/ChangeLog:

2019-10-16  Christian Biesinger  <cbiesinger@google.com>

	* Makefile.in: Add xml-builtin.h.
	* features/feature_to_c.sh: Add an include for xml-builtin.h
	to ensure that the compiler checks that the types match.
	* xml-builtin.h: New file.
	* xml-support.c (fetch_xml_builtin): Add missing const.
	* xml-support.h: Remove declaration of xml_builtins.

gdb/gdbserver/ChangeLog:

2019-10-16  Christian Biesinger  <cbiesinger@google.com>

	* server.c: Include xml-builtin.h.
	(get_xml_features): Don't declare xml_builtins here.

Change-Id: I806ef0851c43ead90b545a11794e41f5e5178436
2019-10-16 18:19:14 +02:00
Andrew Burgess 0dc327459b gdb: Remove vec.{c,h} and update code to not include vec.h
Removes vec.c and vec.h from the source tree, and remove all the
remaining includes of vec.h.  There should be no user visible changes
after this commit.

I did have a few issues rebuilding GDB after applying this patch due
to cached dependencies, I found that running this command in the build
directory resolved my build issues without requiring a 'make clean':

    rm -fr gdb/gdbserver/gdbsupport/.deps/

gdb/ChangeLog:

	* Makefile.in: Remove references to vec.h and vec.c.
	* aarch64-tdep.c: No longer include vec.h.
	* ada-lang.c: Likewise.
	* ada-lang.h: Likewise.
	* arm-tdep.c: Likewise.
	* ax.h: Likewise.
	* breakpoint.h: Likewise.
	* charset.c: Likewise.
	* cp-support.h: Likewise.
	* dtrace-probe.c: Likewise.
	* dwarf2read.c: Likewise.
	* extension.h: Likewise.
	* gdb_bfd.c: Likewise.
	* gdbsupport/gdb_vecs.h: Likewise.
	* gdbsupport/vec.c: Remove.
	* gdbsupport/vec.h: Remove.
	* gdbthread.h: Likewise.
	* guile/scm-type.c: Likewise.
	* inline-frame.c: Likewise.
	* machoread.c: Likewise.
	* memattr.c: Likewise.
	* memrange.h: Likewise.
	* namespace.h: Likewise.
	* nat/linux-btrace.h: Likewise.
	* osdata.c: Likewise.
	* parser-defs.h: Likewise.
	* progspace.h: Likewise.
	* python/py-type.c: Likewise.
	* record-btrace.c: Likewise.
	* rust-exp.y: Likewise.
	* solib-target.c: Likewise.
	* stap-probe.c: Likewise.
	* target-descriptions.c: Likewise.
	* target-memory.c: Likewise.
	* target.h: Likewise.
	* varobj.c: Likewise.
	* varobj.h: Likewise.
	* xml-support.h: Likewise.

gdb/gdbserver/ChangeLog:

	* Makefile.in: Remove references to vec.c.

Change-Id: I0c91d7170bf1b5e992a387fcd9fe4f2abe343bb5
2019-10-15 21:31:55 +01:00
Weimin Pan 30d1f01849 gdb: CTF support
This patch adds the CTF (Compact Ansi-C Type Format) support in gdb.
Two submissions on which this gdb work depends were posted earlier
in May:

 * On the binutils mailing list - adding libctf which creates, updates,
   reads, and manipulates the CTF data.
 * On the gcc mailing list - expanding gcc to directly emit the CFT data
   with a new command line option -gt.

CTF is a reduced form of debugging information whose main purpose is to
describe the type of C entities such as structures, unions, typedefs and
function arguments at the global scope only. It does not contain debug
information about source lines, location expressions, or local variables.
For more information on CTF, see the documentation in the libdtrace-ctf
source tree, available here:

<https://raw.githubusercontent.com/oracle/libdtrace-ctf/master/doc/ctf-format>.

This patch expands struct elfinfo by adding the .ctf section, which
contains CTF debugging info, and modifies elf_symfile_read() to read it.
If both DWARF and CTF exist in a program, only DWARF will be read. CTF data
will be read only when there is no DWARF. The two-stage symbolic reading
and setting strategy, partial and full, was used.

File ctfread.c contains functions to transform CTF data into gdb's internal
symbol table structures by iterately reading entries from CTF sections
of "data objects", "function info", "variable info", and "data types"
when setting up either partial or full symbol table. If the ELF symbol table
is available, e.g. not stripped, the CTF reader will associate the found
type information with these symbol entries. Due to the proximity between DWARF
and CTF (CTF being a much simplified subset of DWARF), some DWARF implementation
was reused to support CTF.

Test cases ctf-constvars.exp, ctf-cvexpr.exp, ctf-ptype.exp, and ctf-whatis.exp
have been added to verify the correctness of this support.

This patch has missing features and limitations which we will add and
address in the future patches.

gdb/ChangeLog
+2019-10-07  Weimin Pan  <weimin.pan@oracle.com>
+
+       * gdb/ctfread.c: New file.
+       * gdb/ctfread.h: New file.
+       * gdb/elfread.c: Include ctfread.h.
+       (struct elfinfo text_p): New member ctfsect.
+       (elf_locate_sections): Mark CTF section.
+       (elf_symfile_read): Call elfctf_build_psymtabs.
+       * gdb/Makefile.in (LIBCTF): Add.
+       (CLIBS): Use it.
+       (CDEPS): Likewise.
+       (DIST): Add ctfread.c.
+       * Makefile.def (dependencies): Add all-libctf to all-gdb
+       * Makefile.in: Add "all-gdb: maybe-all-libctf"
+
gdb/testsuite/ChangeLog
+2019-10-07  Weimin Pan  <weimin.pan@oracle.com>
+
+       * gdb.base/ctf-whatis.exp: New file.
+       * gdb.base/ctf-whatis.c: New file.
+       * gdb.base/ctf-ptype.exp: New file.
+       * gdb.base/ctf-ptype.c: New file.
+       * gdb.base/ctf-constvars.exp: New file.
+       * gdb.base/ctf-constvars.c: New file.
+       * gdb.base/ctf-cvexpr.exp: New file.
+
2019-10-07 02:26:27 +00:00
Weimin Pan 518fe38cd9 Renaming of ctf (the trace format) files 2019-10-07 01:44:45 +00:00
Tom Tromey 80fd282641 Fix type of startup_with_shell in gdbserver
startup_with_shell was changed to be of "bool" type, but I noticed
that the definition in gdbserver disagreed.  This disagreement caused
some regressions on a big-endian machine.

This patch removes the redundant declaration and definition of
startup_with_shell and ensures that such clashes will be diagnosed.

This moves the declaration to common-inferior.h, and introduces a new
common-inferior.c, as suggested by Pedro.

gdb/ChangeLog
2019-10-02  Tom Tromey  <tromey@adacore.com>

	* Makefile.in (COMMON_SFILES): Add common-inferior.c.
	* gdbsupport/common-inferior.c: New file.
	* infcmd.c (startup_with_shell): Don't define.
	* nat/fork-inferior.h (startup_with_shell): Don't declare.
	* gdbsupport/common-inferior.h (startup_with_shell): Declare.
	* inferior.h (startup_with_shell): Don't declare.

gdb/gdbserver/ChangeLog
2019-10-02  Tom Tromey  <tromey@adacore.com>

	* Makefile.in (SFILES): Add common-inferior.c.
	(OBS): Add common-inferior.o.
	* server.c (startup_with_shell): Don't define.
2019-10-02 13:43:41 -06:00
Tom Tromey 27a900b865 Remove gdb_usleep.c
I noticed that gdb_usleep is unused, so this patch removes it.

gdb/ChangeLog
2019-09-26  Tom Tromey  <tom@tromey.com>

	* Makefile.in (COMMON_SFILES): Remove gdb_usleep.c.
	(HFILES_NO_SRCDIR): Remove gdb_usleep.h.
	* gdb_usleep.h: Remove.
	* gdb_usleep.c: Remove.
	* utils.c: Don't include gdb_usleep.h.
2019-09-26 08:43:15 -06:00
Ulrich Weigand abf516c693 Remove Cell Broadband Engine debugging support
This patch implements removal of Cell/B.E. support, including
- Support for the spu-*-* target
- Support for native stand-alone SPU debugging
- Support for integrated debugging of combined PPU/SPU applications
- Remote debugging (gdbserver) support for all the above.

The patch also removes the TARGET_OBJECT_SPU target object type,
as this is available only on Cell/B.E. targets, including
- Native Linux support
- Core file support (including core file generation)
- Remote target support, including removal of the qXfer:spu:read
  and qXfer:spu:write remote protocal packets and associated
  support in gdbserver.

gdb/ChangeLog
2019-09-20  Ulrich Weigand  <uweigand@de.ibm.com>

	* NEWS: Mention that Cell/B.E. debugging support was removed.
	* MAINTAINERS: Remove spu target.

	* config/djgpp/fnchange.lst: Remove entries for removed files.

	* Makefile.in (ALL_TARGET_OBS): Remove solib-spu.o,
	spu-multiarch.o, and spu-tdep.o.
	(HFILES_NO_SRCDIR): Remove solib-spu.h and spu-tdep.h.
	(ALLDEPFILES): Remove solib-spu.c, spu-linux-nat.c,
	spu-multiarch.c, and spu-tdep.c.
	* spu-linux-nat.c: Remove file.
	* spu-multiarch.c: Remove file.
	* spu-tdep.c: Remove file.
	* spu-tdep.h: Remove file.
	* solib-spu.c: Remove file.
	* solib-spu.h: Remove file.

	* configure.host (powerpc64*-*-linux*): Remove Cell/B.E. support.
	* configure.nat (spu-linux): Remove.
	* configure.tgt (powerpc*-*-linux*): Remove solib-spu.o and
	solib-multiarch.o from gdb_target_obs.
	(spu*-*-*): Remove.

	* arch/ppc-linux-common.h (struct ppc_linux_features): Remove "cell"
	feature flag.
	(ppc_linux_no_features): Update.
	* arch/ppc-linux-common.c (ppc_linux_match_description): Remove
	Cell/B.E. support.
	* arch/ppc-linux-tdesc.h (tdesc_powerpc_cell32l): Remove declaration.
	(tdesc_powerpc_cell64l): Likewise.
	* nat/ppc-linux.h (PPC_FEATURE_CELL): Remove.
	* ppc-linux-nat.c (ppc_linux_nat_target::read_description): Remove
	Cell/B.E. support.
	* ppc-linux-tdep.h: Do not include "solib-spu.h" or "spu-tdep.h".
	Do not include "features/rs6000/powerpc-cell32l.c" or
	"features/rs6000/powerpc-cell64l.c".
	(ppc_linux_spu_section): Remove.
	(ppc_linux_core_read_description): Remove Cell/B.E. support.
	(spe_context_objfile, spe_context_lm_addr, spe_context_offset,
	spe_context_cache_ptid, spe_context_cache_ptid): Remove.
	(ppc_linux_spe_context_lookup): Remove.
	(ppc_linux_spe_context_inferior_created): Remove.
	(ppc_linux_spe_context_solib_loaded): Remove.
	(ppc_linux_spe_context_solib_unloaded): Remove.
	(ppc_linux_spe_context): Remove.
	(struct ppu2spu_cache): Remove.
	(ppu2spu_prev_arch, ppu2spu_this_id, ppu2spu_prev_register): Remove.
	(struct ppu2spu_data): Remove.
	(ppu2spu_unwind_register, ppu2spu_sniffer, ppu2spu_dealloc_cache,
	ppu2spu_unwind): Remove.
	(ppc_linux_init_abi): Remove Cell/B.E. support.
	* rs6000-tdep.h (rs6000_gdbarch_init): Remove Cell/B.E. support.

	* features/Makefile (rs6000/powerpc-cell32l-expedite): Remove.
	(rs6000/powerpc-cell64l-expedite): Likewise
	(WHICH): Remove rs6000/powerpc-cell32l and rs6000/powerpc-cell64l.
	(XMLTOC): Remove rs6000/powerpc-cell32l.xml and
	rs6000/powerpc-cell64l.xml.
	* features/rs6000/powerpc-cell32l.xml: Remove.
	* features/rs6000/powerpc-cell64l.xml: Likewise.
	* features/rs6000/powerpc-cell32l.c: Remove generated file.
	* features/rs6000/powerpc-cell64l.c: Likewise.
	* regformats/rs6000/powerpc-cell32l.dat: Remove generated file.
	* regformats/rs6000/powerpc-cell64l.dat: Likewise.
	* regformats/reg-spu.dat: Remove.

	* target.h (enum target_object): Remove TARGET_OBJECT_SPU.
	* corelow.c (struct spuid_list): Remove.
	(add_to_spuid_list): Remove.
	(core_target::xfer_partial): Remove support for TARGET_OBJECT_SPU.
	* remote.c (PACKET_qXfer_spu_read, PACKET_qXfer_spu_write): Remove.
	(remote_protocol_features): Remove associated entries.
	(_initialize_remote): No longer initialize them.
	(remote_target::xfer_partial): Remove support for TARGET_OBJECT_SPU.
	* linux-nat.c (SPUFS_MAGIC): Remove.
	(linux_proc_xfer_spu): Remove.
	(spu_enumerate_spu_ids): Remove.
	(linux_nat_target::xfer_partial): Remove support for TARGET_OBJECT_SPU.
	* linux-tdep.c (-linux_spu_make_corefile_notes): Remove.
	(linux_make_corefile_notes): No longer call it.

	* regcache.c (cooked_read_test): Remove bfd_arch_spu special case.
	(cooked_write_test): Likewise.

gdb/doc/ChangeLog
2019-09-20  Ulrich Weigand  <uweigand@de.ibm.com>

	* doc/gdb.texinfo (Remote Configuration): Remove documentation for
	qXfer:spu:read and qXfer:spu:write.
	(General Query Packets): Likewise.
	(Cell Broadband Engine SPU architecture): Remove subsection.

gdb/gdbserver/ChangeLog
2019-09-20  Ulrich Weigand  <uweigand@de.ibm.com>

	* configure.srv (ipa_ppc_linux_regobj): Remove powerpc-cell32l-ipa.o
	and powerpc-cell64l-ipa.o.
	(powerpc*-*-linux*): Remove powerpc-cell32l.o and powerpc-cell64l.o
	from srv_regobj.  Remove rs6000/powerpc-cell32l.xml and
	rs6000/powerpc-cell64l.xml from srv_xmlfiles.
	(spu*-*-*): Remove.

	* spu-low.c: Remove file.

	* linux-ppc-low.c (INSTR_SC, NR_spu_run): Remove.
	(parse_spufs_run): Remove.
	(ppc_get_pc): Remove Cell/B.E. support.
	(ppc_set_pc): Likewise.
	(ppc_breakpoint_at): Likewise.
	(ppc_arch_setup): Likewise.
	(ppc_get_ipa_tdesc_idx): Do not handle tdesc_powerpc_cell64l or
	tdesc_powerpc_cell32l.
	(initialize_low_arch): Do not call init_registers_powerpc_cell64l
	or init_registers_powerpc_cell32l.
	* linux-ppc-ipa.c (get_ipa_tdesc): Do not handle PPC_TDESC_CELL.
	(initialize_low_tracepoint): Do not call init_registers_powerpc_cell64l
	or init_registers_powerpc_cell32l.
	* linux-ppc-tdesc-init.h (PPC_TDESC_CELL): Mark as unused.
	(init_registers_powerpc_cell32l): Remove prototype.
	(init_registers_powerpc_cell64l): Likewise.

	* target.h (struct target_ops): Remove qxfer_spu member.
	* server.c (handle_qxfer_spu): Remove.
	(qxfer_packets): Remove entry for "spu".
	(handle_query): No longer support qXfer:spu:read or qXfer:spu:write.
	* linux-low.c (SPUFS_MAGIC): Remove.
	(spu_enumerate_spu_ids): Remove.
	(linux_qxfer_spu): Remove.
	(linux_target_ops): Remove qxfer_spu member.
	* lynx-low.c (lynx_target_ops): Remove qxfer_spu member.
	* nto-low.c (nto_target_ops): Remove qxfer_spu member.
	* win32-low.c (win32_target_ops): Remove qxfer_spu member.

gdb/testsuite/ChangeLog
2019-09-20  Ulrich Weigand  <uweigand@de.ibm.com>

	* gdb.arch/spu-info.exp: Remove file.
	* gdb.arch/spu-info.c: Remove file.
	* gdb.arch/spu-ls.exp: Remove file.
	* gdb.arch/spu-ls.c: Remove file.

	* gdb.asm/asm-source.exp: Remove support for spu*-*-*.
	* gdb.asm/spu.inc: Remove file.

	* gdb.base/dump.exp: Remove support for spu*-*-*.
	* gdb.base/stack-checking.exp: Likewise.
	* gdb.base/overlays.exp: Likewise.
	* gdb.base/ovlymgr.c: Likewise.
	* gdb.base/spu.ld: Remove file.

	* gdb.cp/bs15503.exp: Remove support for spu*-*-*.
	* gdb.cp/cpexprs.exp: Likewise.
	* gdb.cp/exception.exp: Likewise.
	* gdb.cp/gdb2495.exp: Likewise.
	* gdb.cp/mb-templates.exp: Likewise.
	* gdb.cp/pr9167.exp: Likewise.
	* gdb.cp/userdef.exp: Likewise.

	* gdb.xml/tdesc-regs.exp: Remove support for spu*-*-*.

	* gdb.cell: Remove directory.
	* lib/cell.exp: Remove file.
2019-09-20 23:06:57 +02:00
Sergio Durigan Junior 2d41fa1165 Move gdb-dlfcn.[ch] to gdbsupport/
I need to use 'gdb_dlopen' inside 'gdbsupport/', but it's not yet
supported there.  This commit moves 'gdb-dlfcn.[ch]' to 'gdbsupport/',
which makes it available also on gdbserver.

gdb/ChangeLog:
2019-08-23  Sergio Durigan Junior  <sergiodj@redhat.com>

	* configure.ac: Don't check for 'dlfcn.h' (moved to
	gdbsupport/common.m4).
	* Makefile.in (COMMON_SFILES): Move 'gdb-dlfcn.c' to
	'gdbsupport/'.
	(HFILES_NO_SRCDIR): Likewise, for 'gdb-dlfcn.h'.
	* compile/compile-c-support.c: Include
	'gdbsupport/gdb-dlfcn.h'.
	* gdbsupport/common.m4: Check for 'dlfcn.h'.
	* gdb-dlfcn.c: Move to...
	* gdbsupport/gdb-dlfcn.c: ... here.
	* gdb-dlfcn.h: Move to...
	* gdbsupport/gdb-dlfcn.h: ... here.

gdb/gdbserver/ChangeLog:
2019-08-23  Sergio Durigan Junior  <sergiodj@redhat.com>

	* Makefile.in (SFILES): Add 'gdbsupport/gdb-dlfcn.c'.
	(OBS): Add 'gdbsupport/gdb-dlfcn.o'.
	* config.in: Regenerate.
	* configure: Regenerate.
2019-08-23 13:13:18 -04:00
Philippe Waroquiers d2834edcb6 Add a selftest that checks documentation invariants.
Several approaches were discussed (mail or irc) to verify the invariants of
the GDB help documentation : checking with apropos ., modifying add_cmd
to do the check and output a warning, implement maintenance check-doc.

A selftest was finally chosen as:
  * this can be run on demand, including by users if they want
    to check user defined commands.
  * it does not interact with the normal behaviour of apropos, define,
    python, ...
    (such as output warnings when a user defines a command help that
     does not respect the doc).
  * when the selftest runs, it checks the user defined and python
    defined commands currently defined.

gdb/ChangeLog
	* unittests/help-doc-selftests.c: New file.
	* Makefile.in: Add the new file.
2019-08-07 00:05:34 +02:00
Frank Ch. Eigler 404f29021a [PR build/24886] disable glibc mcheck support
This patch drops gdb's configury support for glibc's mcheck function.
It has been observed to cause false abort()s, because it is
thread-unsafe yet interposes every malloc/free operation.  So if any
library transitively used by gdb also uses threads, then these
functions can easily corrupt their own checking data.  These days, gcc
ASAN and valgrind provide high quality checking, and mcheck is
apparently itself being slowly deprecated.

So, let's stop linking to it.  Attached patch drops the
autoconf/Makefile machinery for both gdb and gdbserver.  No
testsuite-visible impact.  IMHO not worth mentioning in NEWS.

See also: https://sourceware.org/bugzilla/show_bug.cgi?id=9939

gdb/ChangeLog

        PR build/24886
        * configure.ac: Drop enable-libmcheck support.
        * configure, config.in: Rebuild.
        * libmcheck.m4: Remove.
        * acinclude.m4: Don't include it.
        * Makefile.in: Don't distribute it.
        * top.c (print_gdb_configuration): Don't mention it.

gdb/gdbserver/ChangeLog

        PR build/24886
        * configure.ac: Drop enable-libmcheck support.
        * configure, config.in: Rebuild.
        * acinclude.m4: Don't include it.
2019-08-06 15:09:53 -04:00
Alan Hayward d105cce5dd Arm: Add read_description read funcs and use in GDB
Switch the Arm target to get target descriptions via arm_read_description
and aarch32_read_description, in the same style as other feature targets.
Add an enum to specify the different types - this will also be of use to
gdbserver in a later patch.

Under the hood return the same existing pre-feature target descriptions.

gdb/ChangeLog:

	* Makefile.in: Add new files.
	* aarch32-tdep.c: New file.
	* aarch32-tdep.h: New file.
	* aarch64-linux-nat.c (aarch64_linux_nat_target::read_description):
	Call aarch32_read_description.
	* arch/aarch32.c: New file.
	* arch/aarch32.h: New file.
	* arch/arm.c (arm_create_target_description)
	(arm_create_mprofile_target_description): New function.
	* arch/arm.h (arm_fp_type, arm_m_profile_type): New enum.
	(arm_create_target_description)
	(arm_create_mprofile_target_description): New declaration.
	* arm-fbsd-tdep.c (arm_fbsd_read_description_auxv): Call
	read_description functions.
	* arm-linux-nat.c (arm_linux_nat_target::read_description):
	Likewise.
	* arm-linux-tdep.c (arm_linux_core_read_description): Likewise.
	* arm-tdep.c (tdesc_arm_list): New variable.
	(arm_register_g_packet_guesses): Call create description functions.
	(arm_read_description) (arm_read_mprofile_description): New
	function.
	* arm-tdep.h (arm_read_description)
	(arm_read_mprofile_description): Add declaration.
	* configure.tgt: Add new files.
2019-07-19 14:59:10 +01:00
Tom Tromey 18ab23af8b Rearrange TUI data window code
An earlier patch caused tui-windata.h to be essentially empty.  And,
other earlier patches implemented TUI data window methods in any spot
that happened to be convenient at the time.

This patch rearranges all the data window code to be somewhat more
organized.  It moves tui_data_window to tui-regs.h, and moves the
implementation of all methods to tui-regs.c.  It then removes
tui-windata.h and tui-windata.c.

It also removes the "structuring" comments from tui-regs.c; these are
not the usual gdb style, and were out of date anyhow.  Finally, it
moves _initialize_tui_regs to the end of the file, per the usual gdb
convention.

gdb/ChangeLog
2019-07-17  Tom Tromey  <tom@tromey.com>

	* tui/tui.c: Update.
	* tui/tui-wingeneral.c (tui_data_window::refresh_window): Move to
	tui-regs.c.
	* tui/tui-windata.h: Remove file.
	* tui/tui-windata.c: Remove file.
	* tui/tui-win.c (tui_data_window::set_new_height)
	(tui_data_window::do_make_visible_with_new_height): Move to
	tui-regs.c.
	* tui/tui-regs.h (struct tui_data_window): Move from tui-data.h.
	* tui/tui-regs.c: Remove "structuring" comments.
	(tui_data_window::first_data_item_displayed)
	(tui_data_window::delete_data_content_windows)
	(tui_data_window::erase_data_content)
	(tui_data_window::display_all_data)
	(tui_data_window::refresh_all)
	(tui_data_window::do_scroll_vertical)
	(tui_data_window::clear_detail, tui_data_window::set_new_height)
	(tui_data_window::do_make_visible_with_new_height)
	(tui_data_window::refresh_window): Move from elsewhere.
	(_initialize_tui_regs): Move to end of file.
	* tui/tui-layout.c: Update.
	* tui/tui-hooks.c: Update.
	* tui/tui-data.h (struct tui_data_window): Move to tui-regs.h.
	* tui/tui-data.c (tui_data_window::clear_detail): Move to
	tui-regs.c.
	* Makefile.in (SUBDIR_TUI_SRCS): Remove tui-windata.c.
2019-07-17 12:19:21 -06:00
Tom Tromey 268a13a5a3 Rename common to gdbsupport
This is the next patch in the ongoing series to move gdbsever to the
top level.

This patch just renames the "common" directory.  The idea is to do
this move in two parts: first rename the directory (this patch), then
move the directory to the top.  This approach makes the patches a bit
more tractable.

I chose the name "gdbsupport" for the directory.  However, as this
patch was largely written by sed, we could pick a new name without too
much difficulty.

Tested by the buildbot.

gdb/ChangeLog
2019-07-09  Tom Tromey  <tom@tromey.com>

	* contrib/ari/gdb_ari.sh: Change common to gdbsupport.
	* configure: Rebuild.
	* configure.ac: Change common to gdbsupport.
	* gdbsupport: Rename from common.
	* acinclude.m4: Change common to gdbsupport.
	* Makefile.in (CONFIG_SRC_SUBDIR, COMMON_SFILES)
	(HFILES_NO_SRCDIR, stamp-version, ALLDEPFILES): Change common to
	gdbsupport.
	* aarch64-tdep.c, ada-lang.c, ada-lang.h, agent.c, alloc.c,
	amd64-darwin-tdep.c, amd64-dicos-tdep.c, amd64-fbsd-nat.c,
	amd64-fbsd-tdep.c, amd64-linux-nat.c, amd64-linux-tdep.c,
	amd64-nbsd-tdep.c, amd64-obsd-tdep.c, amd64-sol2-tdep.c,
	amd64-tdep.c, amd64-windows-tdep.c, arch-utils.c,
	arch/aarch64-insn.c, arch/aarch64.c, arch/aarch64.h, arch/amd64.c,
	arch/amd64.h, arch/arm-get-next-pcs.c, arch/arm-linux.c,
	arch/arm.c, arch/i386.c, arch/i386.h, arch/ppc-linux-common.c,
	arch/riscv.c, arch/riscv.h, arch/tic6x.c, arm-tdep.c, auto-load.c,
	auxv.c, ax-gdb.c, ax-general.c, ax.h, breakpoint.c, breakpoint.h,
	btrace.c, btrace.h, build-id.c, build-id.h, c-lang.h, charset.c,
	charset.h, cli/cli-cmds.c, cli/cli-cmds.h, cli/cli-decode.c,
	cli/cli-dump.c, cli/cli-option.h, cli/cli-script.c,
	coff-pe-read.c, command.h, compile/compile-c-support.c,
	compile/compile-c.h, compile/compile-cplus-symbols.c,
	compile/compile-cplus-types.c, compile/compile-cplus.h,
	compile/compile-loc2c.c, compile/compile.c, completer.c,
	completer.h, contrib/ari/gdb_ari.sh, corefile.c, corelow.c,
	cp-support.c, cp-support.h, cp-valprint.c, csky-tdep.c, ctf.c,
	darwin-nat.c, debug.c, defs.h, disasm-selftests.c, disasm.c,
	disasm.h, dtrace-probe.c, dwarf-index-cache.c,
	dwarf-index-cache.h, dwarf-index-write.c, dwarf2-frame.c,
	dwarf2expr.c, dwarf2loc.c, dwarf2read.c, event-loop.c,
	event-top.c, exceptions.c, exec.c, extension.h, fbsd-nat.c,
	features/aarch64-core.c, features/aarch64-fpu.c,
	features/aarch64-pauth.c, features/aarch64-sve.c,
	features/i386/32bit-avx.c, features/i386/32bit-avx512.c,
	features/i386/32bit-core.c, features/i386/32bit-linux.c,
	features/i386/32bit-mpx.c, features/i386/32bit-pkeys.c,
	features/i386/32bit-segments.c, features/i386/32bit-sse.c,
	features/i386/64bit-avx.c, features/i386/64bit-avx512.c,
	features/i386/64bit-core.c, features/i386/64bit-linux.c,
	features/i386/64bit-mpx.c, features/i386/64bit-pkeys.c,
	features/i386/64bit-segments.c, features/i386/64bit-sse.c,
	features/i386/x32-core.c, features/riscv/32bit-cpu.c,
	features/riscv/32bit-csr.c, features/riscv/32bit-fpu.c,
	features/riscv/64bit-cpu.c, features/riscv/64bit-csr.c,
	features/riscv/64bit-fpu.c, features/tic6x-c6xp.c,
	features/tic6x-core.c, features/tic6x-gp.c, filename-seen-cache.h,
	findcmd.c, findvar.c, fork-child.c, gcore.c, gdb_bfd.c, gdb_bfd.h,
	gdb_proc_service.h, gdb_regex.c, gdb_select.h, gdb_usleep.c,
	gdbarch-selftests.c, gdbthread.h, gdbtypes.h, gnu-nat.c,
	go32-nat.c, guile/guile.c, guile/scm-ports.c,
	guile/scm-safe-call.c, guile/scm-type.c, i386-fbsd-nat.c,
	i386-fbsd-tdep.c, i386-go32-tdep.c, i386-linux-nat.c,
	i386-linux-tdep.c, i386-tdep.c, i387-tdep.c,
	ia64-libunwind-tdep.c, ia64-linux-nat.c, inf-child.c,
	inf-ptrace.c, infcall.c, infcall.h, infcmd.c, inferior-iter.h,
	inferior.c, inferior.h, inflow.c, inflow.h, infrun.c, infrun.h,
	inline-frame.c, language.h, linespec.c, linux-fork.c, linux-nat.c,
	linux-tdep.c, linux-thread-db.c, location.c, machoread.c,
	macrotab.h, main.c, maint.c, maint.h, memattr.c, memrange.h,
	mi/mi-cmd-break.h, mi/mi-cmd-env.c, mi/mi-cmd-stack.c,
	mi/mi-cmd-var.c, mi/mi-interp.c, mi/mi-main.c, mi/mi-parse.h,
	minsyms.c, mips-linux-tdep.c, namespace.h,
	nat/aarch64-linux-hw-point.c, nat/aarch64-linux-hw-point.h,
	nat/aarch64-linux.c, nat/aarch64-sve-linux-ptrace.c,
	nat/amd64-linux-siginfo.c, nat/fork-inferior.c,
	nat/linux-btrace.c, nat/linux-btrace.h, nat/linux-namespaces.c,
	nat/linux-nat.h, nat/linux-osdata.c, nat/linux-personality.c,
	nat/linux-procfs.c, nat/linux-ptrace.c, nat/linux-ptrace.h,
	nat/linux-waitpid.c, nat/mips-linux-watch.c,
	nat/mips-linux-watch.h, nat/ppc-linux.c, nat/x86-dregs.c,
	nat/x86-dregs.h, nat/x86-linux-dregs.c, nat/x86-linux.c,
	nto-procfs.c, nto-tdep.c, objfile-flags.h, objfiles.c, objfiles.h,
	obsd-nat.c, observable.h, osdata.c, p-valprint.c, parse.c,
	parser-defs.h, ppc-linux-nat.c, printcmd.c, probe.c, proc-api.c,
	procfs.c, producer.c, progspace.h, psymtab.h,
	python/py-framefilter.c, python/py-inferior.c, python/py-ref.h,
	python/py-type.c, python/python.c, record-btrace.c, record-full.c,
	record.c, record.h, regcache-dump.c, regcache.c, regcache.h,
	remote-fileio.c, remote-fileio.h, remote-sim.c, remote.c,
	riscv-tdep.c, rs6000-aix-tdep.c, rust-exp.y, s12z-tdep.c,
	selftest-arch.c, ser-base.c, ser-event.c, ser-pipe.c, ser-tcp.c,
	ser-unix.c, skip.c, solib-aix.c, solib-target.c, solib.c,
	source-cache.c, source.c, source.h, sparc-nat.c, spu-linux-nat.c,
	stack.c, stap-probe.c, symfile-add-flags.h, symfile.c, symfile.h,
	symtab.c, symtab.h, target-descriptions.c, target-descriptions.h,
	target-memory.c, target.c, target.h, target/waitstatus.c,
	target/waitstatus.h, thread-iter.h, thread.c, tilegx-tdep.c,
	top.c, top.h, tracefile-tfile.c, tracefile.c, tracepoint.c,
	tracepoint.h, tui/tui-io.c, ui-file.c, ui-out.h,
	unittests/array-view-selftests.c,
	unittests/child-path-selftests.c, unittests/cli-utils-selftests.c,
	unittests/common-utils-selftests.c,
	unittests/copy_bitwise-selftests.c, unittests/environ-selftests.c,
	unittests/format_pieces-selftests.c,
	unittests/function-view-selftests.c,
	unittests/lookup_name_info-selftests.c,
	unittests/memory-map-selftests.c, unittests/memrange-selftests.c,
	unittests/mkdir-recursive-selftests.c,
	unittests/observable-selftests.c,
	unittests/offset-type-selftests.c, unittests/optional-selftests.c,
	unittests/parse-connection-spec-selftests.c,
	unittests/ptid-selftests.c, unittests/rsp-low-selftests.c,
	unittests/scoped_fd-selftests.c,
	unittests/scoped_mmap-selftests.c,
	unittests/scoped_restore-selftests.c,
	unittests/string_view-selftests.c, unittests/style-selftests.c,
	unittests/tracepoint-selftests.c, unittests/unpack-selftests.c,
	unittests/utils-selftests.c, unittests/xml-utils-selftests.c,
	utils.c, utils.h, valarith.c, valops.c, valprint.c, value.c,
	value.h, varobj.c, varobj.h, windows-nat.c, x86-linux-nat.c,
	xml-support.c, xml-support.h, xml-tdesc.h, xstormy16-tdep.c,
	xtensa-linux-nat.c, dwarf2read.h: Change common to gdbsupport.

gdb/gdbserver/ChangeLog
2019-07-09  Tom Tromey  <tom@tromey.com>

	* configure: Rebuild.
	* configure.ac: Change common to gdbsupport.
	* acinclude.m4: Change common to gdbsupport.
	* Makefile.in (SFILES, OBS, GDBREPLAY_OBS, IPA_OBJS)
	(version-generated.c, gdbsupport/%-ipa.o, gdbsupport/%.o): Change
	common to gdbsupport.
	* ax.c, event-loop.c, fork-child.c, gdb_proc_service.h,
	gdbreplay.c, gdbthread.h, hostio-errno.c, hostio.c, i387-fp.c,
	inferiors.c, inferiors.h, linux-aarch64-tdesc-selftest.c,
	linux-amd64-ipa.c, linux-i386-ipa.c, linux-low.c,
	linux-tic6x-low.c, linux-x86-low.c, linux-x86-tdesc-selftest.c,
	linux-x86-tdesc.c, lynx-i386-low.c, lynx-low.c, mem-break.h,
	nto-x86-low.c, regcache.c, regcache.h, remote-utils.c, server.c,
	server.h, spu-low.c, symbol.c, target.h, tdesc.c, tdesc.h,
	thread-db.c, tracepoint.c, win32-i386-low.c, win32-low.c: Change
	common to gdbsupport.
2019-07-09 07:45:38 -06:00
Tom Tromey 73cc72729a Move gnulib to top level
This patch moves the gdb/gnulib subdirectory to the top level.

It adjusts the top-level build system to build gnulib when necessary,
and changes gdb to use this.  However, gdbserver still builds its own
copy of gnulib, just from the new source location.

A small hack was needed to ensure that gnulib is only built when gdb
is enabled.  The Makefile only provides an ordering -- the directory
must be mentioned in configdirs to actually be compiled at all.

Most of the patch is just a "git mv" of gnulib, though a few minor
path adjustments were needed in some files there.

Tested by the buildbot.

ChangeLog
2019-06-14  Tom Tromey  <tom@tromey.com>

	* MAINTAINERS: Add gnulib.
	* gnulib: New directory, move from gdb/gnulib.
	* configure.ac (host_libs): Add gnulib.
	* configure: Rebuild.
	* Makefile.def (host_modules, dependencies): Add gnulib.
	* Makefile.in: Rebuild.

gdb/ChangeLog
2019-06-14  Tom Tromey  <tom@tromey.com>

	* gnulib: Move directory to top-level.
	* configure.ac: Don't configure gnulib.
	* configure: Rebuild.
	* common/common-defs.h: Use new path to gnulib.
	* Makefile.in (GNULIB_BUILDDIR): Now ../gnulib.
	(GNULIB_H): Remove.
	(INCGNU): Look in new gnulib location.
	(HFILES_NO_SRCDIR): Remove gnulib files.
	(SUBDIR, REQUIRED_SUBDIRS): Remove gnulib.
	(generated_files): Remove GNULIB_H.
	($(LIBGNU), all-lib): Remove targets.
	(distclean): Don't mention GNULIB_BUILDDIR.
	($(GNULIB_BUILDDIR)/Makefile): Remove target.

gdb/gdbserver/ChangeLog
2019-06-14  Tom Tromey  <tom@tromey.com>

	* configure.ac: Use new path to gnulib.
	* configure: Rebuild.
	* Makefile.in (INCGNU, $(GNULIB_BUILDDIR)/Makefile): Use new path
	to gnulib.

gnulib/ChangeLog
2019-06-14  Tom Tromey  <tom@tromey.com>

	* update-gnulib.sh: Adjust paths.
	* Makefile.in: Adjust paths.
	* configure.ac: Adjust paths.  Use ACX_LARGEFILE.
	* configure: Rebuild.
2019-06-14 12:40:02 -06:00
Pedro Alves 9d0faba9f5 Introduce generic command options framework
This commit adds a generic command options framework, that makes it
easy enough to add '-'-style options to commands in a uniform way,
instead of each command implementing option parsing in its own way.

Options are defined in arrays of option_def objects (for option
definition), and the same options definitions are used for supporting
TAB completion, and also for generating the relevant help fragment of
the "help" command.  See the gdb::options::build_help function, which
returns a string with the result of replacing %OPTIONS% in a template
string with an auto-generated "help" string fragment for all the
passed-in options.

Since most options in GDB are in the form of "-OPT", with a single
dash, this is the format that the framework supports.

I like to think of gdb's "-OPT" as the equivalent to getopt's long
options format ("--OPT"), and gdb's "/" as the equivalent to getopt's
short options format.  getopt's short options format allows mixing
several one-character options, like "ls -als", kind of similar to
gdb's "x /FMT" and "disassemble /MOD", etc.  While with gdb's "-"
options, the option is expected to have a full name, and to be
abbreviatable.  E.g., "watch -location", "break -function main", etc.

This patch only deals with "-" options.  The above comment serves more
to disclose why I don't think we should support mixing several
unrelated options in a single "-" option invocation, like "thread
apply -qcs" instead of "thread apply -q -c -s".

The following patches will add uses of the infrastructure to several
key commands.  Most notably, "print", "compile print", "backtrace",
"frame apply" and "thread apply".  I tried to add options to several
commands in order to make sure the framework didn't leave that many
open holes open.

Options use the same type as set commands -- enum var_types.  So
boolean options are var_boolean, enum options are var_enum, etc.  The
idea is to share code between settings commands and command options.
The "print" options will be based on the "set print" commands, and
their names will be the same.  Actually, their definitions will be the
same too.  There is a function to create "set/show" commands from an
array for option definitions:

 /* Install set/show commands for options defined in OPTIONS.  DATA is
    a pointer to the structure that holds the data associated with the
    OPTIONS array.  */
 extern void add_setshow_cmds_for_options (command_class cmd_class, void *data,
					   gdb::array_view<const option_def> options,
					   struct cmd_list_element **set_list,
					   struct cmd_list_element **show_list);

That will be used by several following patches.

Other features:

 - You can use the "--" delimiter to explicitly indicate end of
   options.  Several existing commands use this token sequence for
   this effect already, so this just standardizes it.

 - You can shorten option names, as long as unambiguous.  Currently,
   some commands allow this (e.g., break -function), while others do
   not (thread apply all -ascending).  As GDB allows abbreviating
   command names and other things, it feels more GDB-ish to allow
   abbreviating option names too, to me.

 - For boolean options, 0/1 stands for off/on, just like with boolean
   "set" commands.

 - For boolean options, "true" is implied, just like with boolean "set
   commands.

These are the option types supported, with a few examples:

 - boolean options (var_boolean).  The option's argument is optional.

   (gdb) print -pretty on -- *obj
   (gdb) print -pretty off -- *obj
   (gdb) print -p -- *obj
   (gdb) print -p 0 -- *obj

 - flag options (like var_boolean, but no option argument (on/off))

   (gdb) thread apply all -s COMMAND

 - enum options  (var_enum)

   (gdb) bt -entry-values compact
   (gdb) bt -e c

 - uinteger options (var_uinteger)

   (gdb) print -elements 100 -- *obj
   (gdb) print -e 100 -- *obj
   (gdb) print -elements unlimited -- *obj
   (gdb) print -e u -- *obj

 - zuinteger-unlimited options (var_zuinteger_unlimited)

   (gdb) print -max-depth 100 -- obj
   (gdb) print -max-depth -1 -- obj
   (gdb) print -max-depth unlimited -- obj

Other var_types could be supported, of course.  These were just the
types that I needed for the commands that I ported over, in the
following patches.

It was interesting (and unfortunate) to find that we need at least 3
different modes to cover the existing commands:

- Commands that require ending options with "--" if you specify any
  option: "print" and "compile print".

- Commands that do not want to require "--", and want to error out if
  you specify an unknown option (i.e., an unknown argument that starts
  with '-'): "compile code" / "compile file".

- Commands that do not want to require "--", and want to process
  unknown options themselves: "bt", because of "bt -COUNT",
  "thread/frame apply", because "-" is a valid command.

The different behavior is encoded in the process_options_mode enum,
passed to process_options/complete_options.

For testing, this patch adds one representative maintenance command
for each of the process_options_mode values, that are used by the
testsuite to exercise the options framework:

 (gdb) maint test-options require-delimiter
 (gdb) maint test-options unknown-is-error
 (gdb) maint test-options unknown-is-operand

and adds another command to help with TAB-completion testing:

 (gdb) maint show test-options-completion-result

See their description at the top of the maint-test-options.c file.

Docs/NEWS are in a patch later in the series.

gdb/ChangeLog:
2019-06-13  Pedro Alves  <palves@redhat.com>

	* Makefile.in (SUBDIR_CLI_SRCS): Add cli/cli-option.c.
	(COMMON_SFILES): Add maint-test-settings.c.
	* cli/cli-decode.c (boolean_enums): New global, factored out from
	...
	(add_setshow_boolean_cmd): ... here.
	* cli/cli-decode.h (boolean_enums): Declare.
	* cli/cli-option.c: New file.
	* cli/cli-option.h: New file.
	* cli/cli-setshow.c (parse_cli_boolean_value(const char **)): New,
	factored out from ...
	(parse_cli_boolean_value(const char *)): ... this.
	(is_unlimited_literal): Change parameter type to pointer to
	pointer.  Adjust and advance ARG pointer.
	(parse_cli_var_uinteger, parse_cli_var_zuinteger_unlimited)
	(parse_cli_var_enum): New, factored out from ...
	(do_set_command): ... this.  Adjust.
	* cli/cli-setshow.h (parse_cli_boolean_value)
	(parse_cli_var_uinteger, parse_cli_var_zuinteger_unlimited)
	(parse_cli_var_enum): Declare.
	* cli/cli-utils.c: Include "cli/cli-option.h".
	(get_ulongest): New.
	* cli/cli-utils.h (get_ulongest): Declare.
	(check_for_argument): New overloads.
	* maint-test-options.c: New file.

gdb/testsuite/ChangeLog:
2019-06-13  Pedro Alves  <palves@redhat.com>

	* gdb.base/options.c: New file.
	* gdb.base/options.exp: New file.
2019-06-13 00:18:12 +01:00
Pedro Alves dca0f6c0a4 New set/show testing framework (gdb.base/settings.exp)
This commit adds new representative commands for all types of settings
commands supported by gdb (enum var_types), and then uses them to
exercise settings parsing and completion.

  (gdb) maint test-settings s[TAB]
  set   show

  (gdb) maint test-settings set [TAB]
  auto-boolean         integer              uinteger
  boolean              optional-filename    zinteger
  enum                 string               zuinteger
  filename             string-noescape      zuinteger-unlimited

  (gdb) maint test-settings set enum [TAB]
  xxx  yyy  zzz

  etc.

This is basically unit testing, except that it goes fully via GDB.  It
must be done this way in order to exercise TAB completion properly,
which must go via readline.

gdb/ChangeLog:
2019-06-13  Pedro Alves  <palves@redhat.com>

	* Makefile.in (COMMON_SFILES): Add maint-test-settings.c.
	* NEWS: Mention maint test-settings KIND.
	* maint-test-settings.c: New file.

gdb/doc/ChangeLog:
2019-06-13  Pedro Alves  <palves@redhat.com>

	* gdb.texinfo (Maintenance Commands): Document "maint
	test-settings" commands.

gdb/testsuite/ChangeLog:
2019-06-13  Pedro Alves  <palves@redhat.com>

	* gdb.base/settings.c: New file.
	* gdb.base/settings.exp: New file.
2019-06-13 00:12:20 +01:00
Tom Tromey 08f10e02be Move gdb's xmalloc and friends to new file
When "common" becomes a library, linking will cause a symbol clash,
because "xmalloc" and some related symbols are defined in that
library, libiberty, and readline.

To work around this problem, this patch moves the clashing symbols to
a new file, which is then compiled separately for both gdb and
gdbserver.

gdb/ChangeLog
2019-06-11  Tom Tromey  <tom@tromey.com>

	* common/common-utils.c (xmalloc, xrealloc, xcalloc)
	(xmalloc_failed): Move to alloc.c.
	* alloc.c: New file.
	* Makefile.in (COMMON_SFILES): Add alloc.c.

gdb/gdbserver/ChangeLog
2019-06-11  Tom Tromey  <tom@tromey.com>

	* Makefile.in (SFILES): Add alloc.c.
	(OBS): Add alloc.o.
	(IPA_OBJS): Add alloc-ipa.o.
	(alloc-ipa.o): New target.
	(%.o: ../%.c): New pattern rule.
2019-06-11 07:41:00 -06:00
Tom Tromey dac43e327d Move type stack handling to a new class
This introduces a new "type_stack" class, and moves all the parser
type stack handling to this class.  Parsers that wish to use this
facility must now instantiate this class somehow.  I chose this
approach because a minority of the existing parsers require this.

gdb/ChangeLog
2019-04-04  Tom Tromey  <tom@tromey.com>

	* type-stack.h: New file.
	* type-stack.c: New file.
	* parser-defs.h (enum type_pieces, union type_stack_elt): Move to
	type-stack.h.
	(insert_into_type_stack, insert_type, push_type, push_type_int)
	(insert_type_address_space, pop_type, pop_type_int)
	(pop_typelist, pop_type_stack, append_type_stack)
	(push_type_stack, get_type_stack, push_typelist)
	(follow_type_instance_flags, follow_types): Don't declare.
	* parse.c (type_stack): Remove global.
	(parse_exp_in_context): Update.
	(insert_into_type_stack, insert_type, push_type, push_type_int)
	(insert_type_address_space, pop_type, pop_type_int)
	(pop_typelist, pop_type_stack, append_type_stack)
	(push_type_stack, get_type_stack, push_typelist)
	(follow_type_instance_flags, follow_types): Remove (moved to
	type-stack.c).
	* f-exp.y (type_stack): New global.
	Update rules.
	(push_kind_type, f_parse): Update.
	* d-exp.y (type_stack): New global.
	Update rules.
	(d_parse): Update.
	* c-exp.y (struct c_parse_state) <type_stack>: New member.
	Update rules.
	* Makefile.in (COMMON_SFILES): Add type-stack.c.
	(HFILES_NO_SRCDIR): Add type-stack.h.
2019-04-04 19:55:11 -06:00
John Baldwin efac4bfe0b Add a new function child_path.
child_path returns a pointer to the first component in a child path
that comes after a parent path.  This does not depend on trying to
stat() the paths since they may describe remote paths but instead
relies on filename parsing.  The function requires that the child path
describe a filename that contains at least one component below the
parent path and returns a pointer to the first component.

gdb/ChangeLog:

	* Makefile.in (SUBDIR_UNITTESTS_SRCS): Add
	unittests/child-path-selftests.c.
	* common/pathstuff.c (child_path): New function.
	* common/pathstuff.h (child_path): New prototype.
	* unittests/child-path-selftests.c: New file.
2019-02-12 13:56:16 -08:00