Toolchain/binutils-gdb
1
0
Fork 0
forked from Imagelibrary/binutils-gdb
Code Pull Requests Activity
93,842 Commits 422 Branches 140 Tags
731f534f918cfaa35c20b5eb6220a8eba4819f04
Commit Graph

1162 Commits

Author SHA1 Message Date
Tom Tromey
a6535de190 Remove free_value_chain 
This patch changes value_release_to_mark and fetch_subexp_value to
return a std::vector of value references, rather than relying on the
"next" field that is contained in a struct value.  This makes it
simpler to reason about the returned values, and also allows for the
removal of free_value_chain.

gdb/ChangeLog
2018-04-06  Tom Tromey  <tom@tromey.com>

	* value.h (fetch_subexp_value, value_release_to_mark): Update.
	(free_value_chain): Remove.
	* value.c (free_value_chain): Remove.
	(value_release_to_mark): Return a std::vector.
	* ppc-linux-nat.c (num_memory_accesses): Change "chain" to a
	std::vector.
	(check_condition): Update.
	* eval.c (fetch_subexp_value): Change "val_chain" to a
	std::vector.
	* breakpoint.c (update_watchpoint): Update.
	(can_use_hardware_watchpoint): Change "vals" to a std::vector.
 2018-04-06 15:44:49 -06:00
Tom Tromey
850645cfe8 Change breakpoints to use value_ref_ptr 
Now that value_ref_ptr exists, it is possible to simplify breakpoint
and bpstat memory management by using a value_ref_ptr rather than
manually handling the reference counts.

gdb/ChangeLog
2018-04-06  Tom Tromey  <tom@tromey.com>

	* value.c (release_value): Update.
	* breakpoint.h (struct watchpoint) <val>: Now a value_ref_ptr.
	(struct bpstats) <val>: Now a value_ref_ptr.
	* breakpoint.c (update_watchpoint, breakpoint_init_inferior)
	(~bpstats, bpstats, bpstat_clear_actions, watchpoint_check)
	(~watchpoint, print_it_watchpoint, watch_command_1)
	(invalidate_bp_value_on_memory_change): Update.
 2018-04-06 15:44:47 -06:00
Tom Tromey
22bc8444e6 Introduce a gdb_ref_ptr specialization for struct value 
struct value is internally reference counted and so, while it also has
some ownership rules unique to it, it makes sense to use a gdb_ref_ptr
when managing it automatically.

This patch removes the existing unique_ptr specialization in favor of
a reference-counted pointer.  It also introduces two other
clarifications:

1. Rename value_free to value_decref, which I think is more in line
   with what the function actually does; and

2. Change release_value to return a gdb_ref_ptr.  This change allows
   us to remove the confusing release_value_or_incref function,
   primarily by making it much simpler to reason about the result of
   release_value.

gdb/ChangeLog
2018-04-06  Tom Tromey  <tom@tromey.com>

	* varobj.c (varobj_clear_saved_item)
	(update_dynamic_varobj_children, install_new_value, ~varobj):
	Update.
	* value.h (value_incref): Move declaration earlier.
	(value_decref): Rename from value_free.
	(struct value_ref_policy): New.
	(value_ref_ptr): New typedef.
	(struct value_deleter): Remove.
	(gdb_value_up): Remove typedef.
	(release_value): Change return type.
	(release_value_or_incref): Remove.
	* value.c (set_value_parent): Update.
	(value_incref): Change return type.
	(value_decref): Rename from value_free.
	(value_free_to_mark, free_all_values, free_value_chain): Update.
	(release_value): Return value_ref_ptr.
	(release_value_or_incref): Remove.
	(record_latest_value, set_internalvar, clear_internalvar):
	Update.
	* stack.c (info_frame_command): Don't call value_free.
	* python/py-value.c (valpy_dealloc, valpy_new)
	(value_to_value_object): Update.
	* printcmd.c (do_examine): Update.
	* opencl-lang.c (lval_func_free_closure): Update.
	* mi/mi-main.c (register_changed_p): Don't call value_free.
	* mep-tdep.c (mep_frame_prev_register): Don't call value_free.
	* m88k-tdep.c (m88k_frame_prev_register): Don't call value_free.
	* m68hc11-tdep.c (m68hc11_frame_prev_register): Don't call
	value_free.
	* guile/scm-value.c (vlscm_free_value_smob)
	(vlscm_scm_from_value): Update.
	* frame.c (frame_register_unwind, frame_unwind_register_signed)
	(frame_unwind_register_unsigned, get_frame_register_bytes)
	(put_frame_register_bytes): Don't call value_free.
	* findvar.c (address_from_register): Don't call value_free.
	* dwarf2read.c (dwarf2_compute_name): Don't call value_free.
	* dwarf2loc.c (entry_data_value_free_closure)
	(value_of_dwarf_reg_entry, free_pieced_value_closure)
	(dwarf2_evaluate_loc_desc_full): Update.
	* breakpoint.c (update_watchpoint, breakpoint_init_inferior)
	(~bpstats, bpstats, bpstat_clear_actions, watchpoint_check)
	(~watchpoint, watch_command_1)
	(invalidate_bp_value_on_memory_change): Update.
	* alpha-tdep.c (alpha_register_to_value): Don't call value_free.
 2018-04-06 15:44:46 -06:00
Tom Tromey
459a2e4ccf Change streq to return bool 
I wanted to use streq with std::unique in another (upcoming) patch in
this seres, so I changed it to return bool.  To my surprise, this lead
to regressions.  The cause turned out to be that streq was used as an
htab callback -- by casting it to the correct function type.  This
sort of cast is invalid, so this patch adds a variant which is
directly suitable for use by htab.  (Note that I did not add an
overload, as I could not get that to work with template deduction in
the other patch.)

ChangeLog
2018-04-05  Tom Tromey  <tom@tromey.com>

	* completer.c (completion_tracker::completion_tracker): Remove
	cast.
	(completion_tracker::discard_completions): Likewise.
	* breakpoint.c (ambiguous_names_p): Remove cast.
	* ada-lang.c (_initialize_ada_language): Remove cast.
	* utils.h (streq): Update.
	(streq_hash): Add new declaration.
	* utils.c (streq): Return bool.
	(streq_hash): New function.
 2018-04-05 07:39:36 -06:00
Simon Marchi
a18ba4e4c9 Use std::vector in uploaded_tp 
This patch changes the VEC(char_ptr) fields in uploaded_tp to use
std::vector<char *>.  At first, I wanted to creep in more changes, like
using std::string, but it was making the patch too big and less focused,
so I decided to keep it to just that.

It also looks like the strings in those vectors are never free'd.  If
so, we can fix that in another patch.

gdb/ChangeLog:

	* tracepoint.h (struct uploaded_tp): Initialize fields.
	<actions, step_actions, cmd_strings>: Change type to
	std::vector<char *>.
	* tracepoint.c (get_uploaded_tp): Allocate with new.
	(free_uploaded_tps): Free with delete.
	(parse_tracepoint_definition): Adjust to std::vector change.
	* breakpoint.c (read_uploaded_action): Likewise.
	(create_tracepoint_from_upload): Likewise.
	* ctf.c (ctf_write_uploaded_tp): Likewise.
	(SET_ARRAY_FIELD): Likewise.
	* tracefile-tfile.c (tfile_write_uploaded_tp): Likewise.
 2018-03-30 17:18:54 -04:00
Simon Marchi
5d9310c4b8 Get rid of VEC(static_tracepoint_marker_p) 
This patch replaces VEC(static_tracepoint_marker_p) with std::vector,
and does some c++ification around that.  I thought a new overload of
hex2str was useful, so I added it as well as corresponding unit tests.
I also added an overload of ui_out::field_string that takes an
std::string directly.

gdb/ChangeLog:

	* tracepoint.h (struct static_tracepoint_marker): Initialize
	fields, define default constructor, move constructor and move
	assignment, disable the rest.
	<str_id, extra>: Make std::string.
	(release_static_tracepoint_marker): Remove.
	(free_current_marker): Remove.
	* tracepoint.c (free_current_marker): Remove.
	(parse_static_tracepoint_marker_definition): Adjust to
	std::string, use new hex2str overload.
	(release_static_tracepoint_marker): Remove.
	(print_one_static_tracepoint_marker): Get marker by reference
	and adjust to std::string.
	(info_static_tracepoint_markers_command): Adjust to std::vector
	changes
	* target.h (static_tracepoint_marker_p): Remove typedef.
	(DEF_VEC_P(static_tracepoint_marker_p)): Remove.
	(struct target_ops) <to_static_tracepoint_marker_at>: Return
	bool.
	<to_static_tracepoint_markers_by_strid>: Return std::vector.
	* target-debug.h
	(target_debug_print_VEC_static_tracepoint_marker_p_p): Remove.
	(target_debug_print_std_vector_static_tracepoint_marker): New.
	(target_debug_print_struct_static_tracepoint_marker_p): Rename
	to...
	(target_debug_print_static_tracepoint_marker_p): ... this.
	* target-delegates.c: Re-generate.
	* breakpoint.h (struct tracepoint) <static_trace_marker_id>:
	Make std::string.
	* breakpoint.c (init_breakpoint_sal): Adjust to std::string.
	(decode_static_tracepoint_spec): Adjust to std::vector.
	(tracepoint_print_one_detail): Adjust to std::string.
	(strace_marker_decode_location): Adjust to std::string.
	(update_static_tracepoint): Adjust to std::string, remove call
	to release_static_tracepoint_marker.
	* linux-nat.c (linux_child_static_tracepoint_markers_by_strid):
	Adjust to std::vector.
	* remote.c (remote_static_tracepoint_marker_at): Return bool.
	(remote_static_tracepoint_markers_by_strid): Adjust to
	std::vector.
	* common/rsp-low.h (hex2str): New overload with explicit count
	of bytes.
	* common/rsp-low.c (hex2str): New overload with explicit count
	of bytes.
	* unittests/rsp-low-selftests.c (test_hex2str): New function.
	(_initialize_rsp_low_selftests): Add test_hex2str test.
	* unittests/tracepoint-selftests.c
	(test_parse_static_tracepoint_marker_definition): Adjust to
	std::string.
 2018-03-22 00:27:19 -04:00
Tom Tromey
76727919ce Convert observers to C++ 
This converts observers from using a special source-generating script
to be plain C++.  This version of the patch takes advantage of C++11
by using std::function and variadic templates; incorporates Pedro's
patches; and renames the header file to "observable.h" (this change
eliminates the need for a clean rebuild).

Note that Pedro's patches used a template lambda in tui-hooks.c, but
this failed to compile on some buildbot instances (presumably due to
differing C++ versions); I replaced this with an ordinary template
function.

Regression tested on the buildbot.

gdb/ChangeLog
2018-03-19  Pedro Alves  <palves@redhat.com>
	    Tom Tromey  <tom@tromey.com>

	* unittests/observable-selftests.c: New file.
	* common/observable.h: New file.
	* observable.h: New file.
	* ada-lang.c, ada-tasks.c, agent.c, aix-thread.c, annotate.c,
	arm-tdep.c, auto-load.c, auxv.c, break-catch-syscall.c,
	breakpoint.c, bsd-uthread.c, cli/cli-interp.c, cli/cli-setshow.c,
	corefile.c, dummy-frame.c, event-loop.c, event-top.c, exec.c,
	extension.c, frame.c, gdbarch.c, guile/scm-breakpoint.c,
	infcall.c, infcmd.c, inferior.c, inflow.c, infrun.c, jit.c,
	linux-tdep.c, linux-thread-db.c, m68klinux-tdep.c,
	mi/mi-cmd-break.c, mi/mi-interp.c, mi/mi-main.c, objfiles.c,
	ppc-linux-nat.c, ppc-linux-tdep.c, printcmd.c, procfs.c,
	python/py-breakpoint.c, python/py-finishbreakpoint.c,
	python/py-inferior.c, python/py-unwind.c, ravenscar-thread.c,
	record-btrace.c, record-full.c, record.c, regcache.c, remote.c,
	riscv-tdep.c, sol-thread.c, solib-aix.c, solib-spu.c, solib.c,
	spu-multiarch.c, spu-tdep.c, stack.c, symfile-mem.c, symfile.c,
	symtab.c, thread.c, top.c, tracepoint.c, tui/tui-hooks.c,
	tui/tui-interp.c, valops.c: Update all users.
	* tui/tui-hooks.c (tui_bp_created_observer)
	(tui_bp_deleted_observer, tui_bp_modified_observer)
	(tui_inferior_exit_observer, tui_before_prompt_observer)
	(tui_normal_stop_observer, tui_register_changed_observer):
	Remove.
	(tui_observers_token): New global.
	(attach_or_detach, tui_attach_detach_observers): New functions.
	(tui_install_hooks, tui_remove_hooks): Use
	tui_attach_detach_observers.
	* record-btrace.c (record_btrace_thread_observer): Remove.
	(record_btrace_thread_observer_token): New global.
	* observer.sh: Remove.
	* observer.c: Rename to observable.c.
	* observable.c (namespace gdb_observers): Define new objects.
	(observer_debug): Move into gdb_observers namespace.
	(struct observer, struct observer_list, xalloc_observer_list_node)
	(xfree_observer_list_node, generic_observer_attach)
	(generic_observer_detach, generic_observer_notify): Remove.
	(_initialize_observer): Update.
	Don't include observer.inc.
	* Makefile.in (generated_files): Remove observer.h, observer.inc.
	(clean mostlyclean): Likewise.
	(observer.h, observer.inc): Remove targets.
	(SUBDIR_UNITTESTS_SRCS): Add observable-selftests.c.
	(COMMON_SFILES): Use observable.c, not observer.c.
	* .gitignore: Remove observer.h.

gdb/doc/ChangeLog
2018-03-19  Tom Tromey  <tom@tromey.com>

	* observer.texi: Remove.

gdb/testsuite/ChangeLog
2018-03-19  Tom Tromey  <tom@tromey.com>

	* gdb.gdb/observer.exp: Remove.
 2018-03-19 09:37:49 -06:00
Simon Marchi
6fb16ce6ea Make program_space::deleted_solibs a vector of std::string 
This allows removing a usage of free_char_ptr_vec.

gdb/ChangeLog:

	* progspace.h (struct program_space) <deleted_solibs>: Change
	type to std::vector<std::string>.
	* progspace.c (clear_program_space_solib_cache): Adjust.
	* breakpoint.c (print_solib_event): Adjust.
	(check_status_catch_solib): Adjust.
	* solib.c (update_solib_list): Adjust.
	* ui-out.h (class ui_out) <field_string>: New overload.
	* ui-out.c (ui_out::field_string): New overload.
 2018-03-02 23:22:09 -05:00
Tom Tromey
281d762b1a Remove cleanups from check_fast_tracepoint_sals 
This changes the gdbarch fast_tracepoint_valid_at method to use a
std::string as its out parameter, and then updates all the uses.  This
allows removing a cleanup from breakpoint.c.

Regression tested by the buildbot.

ChangeLog
2018-02-24  Tom Tromey  <tom@tromey.com>

	* i386-tdep.c (i386_fast_tracepoint_valid_at): "msg" now a
	std::string.
	* gdbarch.sh (fast_tracepoint_valid_at): Change "msg" to a
	std::string*.
	* gdbarch.c: Rebuild.
	* gdbarch.h: Rebuild.
	* breakpoint.c (check_fast_tracepoint_sals): Use std::string.
	* arch-utils.h (default_fast_tracepoint_valid_at): Update.
	* arch-utils.c (default_fast_tracepoint_valid_at): "msg" now a
	std::string*.
 2018-02-24 10:01:11 -07:00
Andrew Burgess
aee1fcdf97 gdb: New API for tracking innermost block 
This commit is preparation for a later change, at this point there
should be no user visible change.

We currently maintain a global innermost_block which tracks the most
inner block encountered when parsing an expression.

This commit wraps the innermost_block into a new class, and switches all
direct accesses to the variable to use the class API.

gdb/ChangeLog:

	* ada-exp.y (write_var_from_sym): Switch to innermost_block API.
	* ada-lang.c (resolve_subexp): Likewise.
	* breakpoint.c (set_breakpoint_condition) Likewise.
	(watch_command_1) Likewise.
	* c-exp.y (variable): Likewise.
	* d-exp.y (PrimaryExpression): Likewise.
	* f-exp.y (variable): Likewise.
	* go-exp.y (variable): Likewise.
	* m2-exp.y (variable): Likewise.
	* objfiles.c (objfile::~objfile): Likewise.
	* p-exp.y (variable): Likewise.
	* parse.c (innermost_block): Change type.
	* parser-defs.h (class innermost_block_tracker): New.
	(innermost_block): Change to innermost_block_tracker.
	* printcmd.c (display_command): Switch to innermost_block API.
	(do_one_display): Likewise.
	* rust-exp.y (do_one_display): Likewise.
	* symfile.c (clear_symtab_users): Likewise.
	* varobj.c (varobj_create): Switch to innermost_block API, replace
	use of innermost_block with block stored on varobj object.
 2018-01-21 15:15:47 +00:00
Joel Brobecker
e2882c8578 Update copyright year range in all GDB files 
gdb/ChangeLog:

        Update copyright year range in all GDB files
 2018-01-02 07:38:06 +04:00
Yao Qi
f17d947477 Clear non-significant bits of address in watchpoint 
Nowadays, GDB can't set watchpoint on tagged address on AArch64,

(gdb) p p2
$1 = (int *) 0xf000fffffffff474
(gdb) watch *((int *) 0xf000fffffffff474)
Hardware watchpoint 2: *((int *) 0xf000fffffffff474)
(gdb) c
Continuing.
main () at
binutils-gdb/gdb/testsuite/gdb.arch/aarch64-tagged-pointer.c:45
45	  void (*func_ptr) (void) = foo;
Unexpected error setting hardware debug registers

This patch is about setting watchpoint on a tagged address.  Unlike
breakpoint, watchpoint record the expression rather than the address, and
when a watchpoint is fired, GDB checks the expression value changed
instead of matching address, so we can mask the watchpoint address by
getting rid of non-significant bits of address.

gdb:

2017-12-08  Yao Qi  <yao.qi@linaro.org>

	* breakpoint.c (update_watchpoint): Call
	address_significant.

gdb/testsuite:

2017-12-08  Yao Qi  <yao.qi@linaro.org>

	* gdb.arch/aarch64-tagged-pointer.c (main): Update.
	* gdb.arch/aarch64-tagged-pointer.exp: Add tests for watchpoint.
 2017-12-08 17:27:03 +00:00
Yao Qi
a0de8c21ba Adjust breakpoint address by clearing non-significant bits 
Tag in tagged address on AArch64 is treated as a non-significant bits of
address, which can be got by gdbarch method significant_addr_bit, and gdb
can clear these bits.

With this patch, when user sets a breakpoint on tagged address on AArch64,
GDB will drop the top byte of address, and put breakpoint at the new place,
as shown below,

(gdb) hbreak *func_ptr
warning: Breakpoint address adjusted from 0xf000000000400690 to 0x00400690.
Hardware assisted breakpoint 2 at 0x400690

(gdb) break *func_ptr
warning: Breakpoint address adjusted from 0xf000000000400690 to 0x00400690.
Breakpoint 3 at 0x400690

When program hits a breakpoint, the stopped pc reported by Linux kernel is
the address *without* tag, so it is better the address recorded in
breakpoint location is the one without tag too, so we can still match
breakpoint location address and stopped pc reported by Linux kernel, by
simple compare.

gdb:

2017-12-08  Yao Qi  <yao.qi@linaro.org>

	* breakpoint.c (adjust_breakpoint_address): Call
	address_significant.

gdb/testsuite:

2017-12-08  Yao Qi  <yao.qi@linaro.org>

	* gdb.arch/aarch64-tagged-pointer.c (main): Update.
	* gdb.arch/aarch64-tagged-pointer.exp: Add test for breakpoint.
 2017-12-08 17:27:03 +00:00
Tom Tromey
8e481c3ba8 C++-ify parse_format_string 
This replaces parse_format_string with a class, removing some
constructors along the way.  While doing this, I found that one
argument to gen_printf is unused, so I removed it.

Also, I am not completely sure, but the use of `release' in
maint_agent_printf_command and parse_cmd_to_aexpr seems like it may
leak expressions.

Regression tested by the buildbot.

ChangeLog
2017-12-08  Tom Tromey  <tom@tromey.com>

	* printcmd.c (ui_printf): Update.  Use std::vector.
	* common/format.h (struct format_piece): Add constructor.
	<string>: Now const.
	(class format_pieces): New class.
	(parse_format_string, free_format_pieces)
	(free_format_pieces_cleanup): Remove.
	* common/format.c (format_pieces::format_pieces): Rename from
	parse_format_string.  Update.
	(free_format_pieces, free_format_pieces_cleanup): Remove.
	* breakpoint.c (parse_cmd_to_aexpr): Update.  Use std::vector.
	* ax-gdb.h (gen_printf): Remove argument.
	* ax-gdb.c (gen_printf): Remove "frags" argument.
	(maint_agent_printf_command): Update.  Use std::vector.

gdbserver/ChangeLog
2017-12-08  Tom Tromey  <tom@tromey.com>

	* ax.c (ax_printf): Update.
 2017-12-08 10:23:43 -07:00
Tom Tromey
99598d713f Fix regression in "commands" 
Pedro pointed out a regression in "commands", where trying to clear a
breakpoint's command list would fail:

    (top-gdb) commands
    Type commands for breakpoint(s) 3, one per line.
    End with a line saying just "end".
    >end
    No breakpoints specified.
    (top-gdb)

I believe the bug was introduced by my patch that changes
counted_command_line to be a shared_ptr.  This causes the problem
because now the counted_command_line in commands_command_1 can be NULL,
whereas previously it never could be.

After some discussion, we agreed to simply remove the error case from
commands_command_1.

2017-12-07  Tom Tromey  <tom@tromey.com>

	PR breakpoints/22511:
	* breakpoint.c (commands_command_1): Don't throw an exception when
	no commands have been read.

2017-12-07  Tom Tromey  <tom@tromey.com>

	* gdb.base/break.exp: Add test for empty "commands".
 2017-12-07 14:52:20 -07:00
Simon Marchi
798a7429f9 Remove some unused variables 
This patch removes some unused variables, found with -Wunused.  I have
not removed everything reported by -Wunused, because some expressions
such as

  struct type *arg_type = check_typedef (value_type);

in bfin-tdep.c could have an unexpected but important side-effect.  I
removed others that I considered more low-risk, such as:

  struct gdbarch *gdbarch = get_objfile_arch (objfile);

I tested building with Python 2/Python 3/no Python, with/without expat,
with/without libipt and with/without babeltrace.

gdb/ChangeLog:

	* ada-lang.c (ada_collect_symbol_completion_matches): Remove
	unused variables.
	(ada_is_redundant_range_encoding): Likewise.
	* ada-varobj.c (ada_varobj_get_value_of_array_variable):
	Likewise.
	* alpha-tdep.c (alpha_software_single_step): Likewise.
	* arm-tdep.c (_initialize_arm_tdep): Likewise.
	* auto-load.c (info_auto_load_cmd): Likewise.
	* break-catch-syscall.c (insert_catch_syscall): Likewise.
	(remove_catch_syscall): Likewise.
	* breakpoint.c (condition_completer): Likewise.
	(clear_command): Likewise.
	(update_breakpoint_locations): Likewise.
	* btrace.c (btrace_disable): Likewise.
	(btrace_teardown): Likewise.
	(btrace_maint_update_pt_packets): Likewise.
	(maint_btrace_clear_cmd): Likewise.
	* cli/cli-decode.c (lookup_cmd_1): Likewise.
	(lookup_cmd_composition): Likewise.
	* cli/cli-dump.c (scan_filename): Likewise.
	(restore_command): Likewise.
	* compile/compile-loc2c.c (compute_stack_depth): Likewise.
	* compile/compile-object-load.c (compile_object_load): Likewise.
	* compile/compile-object-run.c (compile_object_run): Likewise.
	* compile/compile.c (compile_to_object): Likewise.
	* completer.c (filename_completer): Likewise.
	(complete_files_symbols): Likewise.
	(complete_expression): Likewise.
	* corelow.c (core_open): Likewise.
	* ctf.c (ctf_start): Likewise.
	(ctf_write_status): Likewise.
	(ctf_write_uploaded_tsv): Likewise.
	(ctf_write_definition_end): Likewise.
	(ctf_open_dir): Likewise.
	(ctf_xfer_partial): Likewise.
	(ctf_trace_find): Likewise.
	* disasm.c (gdb_pretty_print_disassembler::pretty_print_insn):
	Likewise.
	* dwarf2loc.c (allocate_piece_closure): Likewise.
	(indirect_pieced_value): Likewise.
	(dwarf2_evaluate_loc_desc_full): Likewise.
	* dwarf2read.c (dw2_expand_marked_cus): Likewise.
	(dw2_expand_symtabs_matching): Likewise.
	(dw2_map_symbol_filenames): Likewise.
	(read_and_check_comp_unit_head): Likewise.
	(read_cutu_die_from_dwo): Likewise.
	(lookup_dwo_unit): Likewise.
	(read_comp_units_from_section): Likewise.
	(dwarf2_compute_name): Likewise.
	(handle_DW_AT_stmt_list): Likewise.
	(create_cus_hash_table): Likewise.
	(create_dwp_v2_section): Likewise.
	(dwarf2_rnglists_process): Likewise.
	(dwarf2_ranges_process): Likewise.
	(dwarf2_record_block_ranges): Likewise.
	(is_vtable_name): Likewise.
	(read_formatted_entries): Likewise.
	(skip_form_bytes): Likewise.
	* elfread.c (elf_symtab_read): Likewise.
	* exec.c (exec_file_command): Likewise.
	* f-valprint.c (f_val_print): Likewise.
	(info_common_command_for_block): Likewise.
	* guile/guile.c (initialize_scheme_side): Likewise.
	* guile/scm-breakpoint.c (gdbscm_breakpoint_commands): Likewise.
	* guile/scm-cmd.c (cmdscm_completer): Likewise.
	(gdbscm_register_command_x): Likewise.
	* guile/scm-frame.c (gdbscm_frame_read_var): Likewise.
	* guile/scm-param.c (gdbscm_parameter_value): Likewise.
	* guile/scm-ports.c (file_port_magic): Likewise.
	* guile/scm-pretty-print.c (ppscm_search_pp_list): Likewise.
	(ppscm_pretty_print_one_value): Likewise.
	(ppscm_print_children): Likewise.
	* guile/scm-string.c (gdbscm_string_to_argv): Likewise.
	* guile/scm-symtab.c (gdbscm_sal_symtab): Likewise.
	* guile/scm-type.c (gdbscm_type_next_field_x): Likewise.
	* guile/scm-utils.c (gdbscm_parse_function_args): Likewise.
	* i386-tdep.c (i386_register_reggroup_p): Likewise.
	* infcmd.c (run_command_1): Likewise.
	(until_next_fsm_clean_up): Likewise.
	* linespec.c (linespec_complete): Likewise.
	(find_label_symbols): Likewise.
	* m2-valprint.c (m2_val_print): Likewise.
	* memattr.c (require_user_regions): Likewise.
	(lookup_mem_region): Likewise.
	(disable_mem_command): Likewise.
	(mem_delete): Likewise.
	* mep-tdep.c (mep_register_name): Likewise.
	(mep_analyze_prologue): Likewise.
	* mi/mi-cmd-file.c (mi_cmd_file_list_shared_libraries): Likewise.
	* mi/mi-interp.c (mi_on_sync_execution_done): Likewise.
	* mi/mi-main.c (mi_cmd_trace_frame_collected): Likewise.
	* microblaze-linux-tdep.c (microblaze_linux_init_abi): Likewise.
	* minidebug.c (lzma_open): Likewise.
	* minsyms.c (lookup_minimal_symbol): Likewise.
	* mips-linux-tdep.c (mips64_fill_fpregset): Likewise.
	* mips-tdep.c (mips_stub_frame_sniffer): Likewise.
	(mips_o64_return_value): Likewise.
	(mips_single_step_through_delay): Likewise.
	(_initialize_mips_tdep): Likewise.
	* nios2-tdep.c (nios2_push_dummy_call): Likewise.
	(nios2_software_single_step): Likewise.
	* parse.c (find_minsym_type_and_address): Likewise.
	* psymtab.c (psym_relocate): Likewise.
	* python/py-breakpoint.c (bppy_get_commands): Likewise.
	(gdbpy_breakpoint_modified): Likewise.
	* python/py-infevents.c (create_inferior_call_event_object):
	Likewise.
	* python/py-record-btrace.c (btpy_list_item): Likewise.
	* python/py-type.c (typy_str): Likewise.
	* python/py-value.c (valpy_call): Likewise.
	* python/python.c (do_start_initialization): Likewise.
	* record-btrace.c (record_btrace_insn_history_range): Likewise.
	(record_btrace_call_history_range): Likewise.
	(record_btrace_record_method): Likewise.
	(record_btrace_xfer_partial): Likewise.
	(btrace_get_frame_function): Likewise.
	* record-full.c (record_full_open): Likewise.
	* record.c (get_context_size): Likewise.
	* registry.h (DEFINE_REGISTRY): Likewise.
	* remote-fileio.c (remote_fileio_request): Likewise.
	* remote.c (remote_update_thread_list): Likewise.
	(remote_check_symbols): Likewise.
	(remote_commit_resume): Likewise.
	(remote_interrupt): Likewise.
	(remote_insert_breakpoint): Likewise.
	(compare_sections_command): Likewise.
	* rust-exp.y (super_name): Likewise.
	(lex_string): Likewise.
	(convert_ast_to_type): Likewise.
	(convert_ast_to_expression): Likewise.
	* rust-lang.c (rust_print_struct_def): Likewise.
	(rust_print_type): Likewise.
	(rust_evaluate_subexp): Likewise.
	* rx-tdep.c (rx_register_type): Likewise.
	* ser-event.c (serial_event_clear): Likewise.
	* serial.c (serial_open): Likewise.
	* spu-tdep.c (spu_overlay_new_objfile): Likewise.
	* symfile.c (section_is_overlay): Likewise.
	(overlay_unmapped_address): Likewise.
	(overlay_mapped_address): Likewise.
	(simple_overlay_update_1): Likewise.
	(simple_overlay_update): Likewise.
	* symtab.c (symbol_find_demangled_name): Likewise.
	(search_symbols): Likewise.
	* target-descriptions.c (tdesc_predefined_type): Likewise.
	* target.c (target_commit_resume): Likewise.
	* thread.c (print_selected_thread_frame): Likewise.
	* top.c (new_ui_command): Likewise.
	(gdb_readline_no_editing): Likewise.
	* tracefile-tfile.c (tfile_open): Likewise.
	* tracepoint.c (create_tsv_from_upload): Likewise.
	* utils.c (quit): Likewise.
	(defaulted_query): Likewise.
	* valarith.c (value_concat): Likewise.
	* xml-syscall.c (xml_list_syscalls_by_group): Likewise.
	* xml-tdesc.c (target_fetch_description_xml): Likewise.
	* xtensa-tdep.c (xtensa_pseudo_register_read): Likewise.
	(xtensa_pseudo_register_write): Likewise.

gdb/gdbserver/ChangeLog:

	* regcache.c (registers_to_string): Remove unused variable.
 2017-12-05 16:05:50 -05:00
Pedro Alves
a20714ff39 Make "break foo" find "A::foo", A::B::foo", etc. [C++ and wild matching] 
This patch teaches GDB about setting breakpoints in all scopes
(namespaces and classes) by default.

Here's a contrived example:

  (gdb) b func<tab>
  (anonymous namespace)::A::function()            Bn::(anonymous namespace)::B::function()        function(int, int)
  (anonymous namespace)::B::function()            Bn::(anonymous namespace)::function()           gdb::(anonymous namespace)::A::function()
  (anonymous namespace)::B::function() const      Bn::(anonymous namespace)::function(int, int)   gdb::(anonymous namespace)::function()
  (anonymous namespace)::function()               Bn::B::func()                                   gdb::(anonymous namespace)::function(int, int)
  (anonymous namespace)::function(int, int)       Bn::B::function()                               gdb::A::func()
  A::func()                                       Bn::func()                                      gdb::A::function()
  A::function()                                   Bn::function()                                  gdb::func()
  B::func()                                       Bn::function(int, int)                          gdb::function()
  B::function()                                   Bn::function(long)                              gdb::function(int, int)
  B::function() const                             func()                                          gdb::function(long)
  B::function_const() const                       function()
  (gdb) b function
  Breakpoint 1 at 0x4005ce: function. (26 locations)

  (gdb) b B::function<tab>
  (anonymous namespace)::B::function()        B::function() const                         Bn::B::function()
  (anonymous namespace)::B::function() const  B::function_const() const
  B::function()                               Bn::(anonymous namespace)::B::function()
  (gdb) b B::function
  Breakpoint 1 at 0x40072c: B::function. (6 locations)

To get back the original behavior of interpreting the function name as
a fully-qualified name, you can use the new "-qualified" (or "-q")
option/flag (added by this commit).  For example:

 (gdb) b B::function
 (anonymous namespace)::B::function()        B::function() const                         Bn::B::function()
 (anonymous namespace)::B::function() const  B::function_const() const
 B::function()                               Bn::(anonymous namespace)::B::function()

vs:

 (gdb) b -qualified B::function
 B::function()              B::function() const        B::function_const() const

I've chosen "-qualified" / "-q" because "-f" (for "full" or
"fully-qualified") is already taken for "-function".

Note: the "-qualified" option works with both linespecs and explicit
locations.  I.e., these are equivalent:

 (gdb) b -q func
 (gdb) b -q -f func

and so are these:

 (gdb) b -q filename.cc:func
 (gdb) b -q -s filename.cc -f func
 (gdb) b -s filename.cc -q -f func
 (gdb) b -s filename.cc -f func -q

To better understand why I consider wild matching the better default,
consider what happens when we get to the point when _all_ of GDB is
wrapped under "namespace gdb {}".  I have a patch series that does
that, and when I started debugging that GDB, I immediately became
frustrated.  You'd have to write "b gdb::internal_error", "b
gdb::foo", "b gdb::bar", etc. etc., which gets annoying pretty
quickly.  OTOH, consider how this makes it very easy to set
breakpoints in classes wrapped in anonymous namespaces.  You just
don't think of them, GDB finds the symbols for you automatically.

(At the Cauldron a couple months ago, several people told me that they
run into a similar issue when debugging other C++ projects.  One
example was when debugging LLVM, which puts all its code under the
"llvm" namespace.)

Implementation-wise, what the patch does is:

  - makes C++ symbol name hashing only consider the last component of
    a symbol name. (so that we can look up symbol names by
    last-component name only).

  - adds a C++ symbol name matcher for symbol_name_match_type::WILD,
    which ignores missing leading specifiers / components.

  - adjusts a few preexisting testsuite tests to use "-qualified" when
    they mean it.

  - adds new testsuite tests.

  - adds unit tests.

Grows the gdb.linespec/ tests like this:

  -# of expected passes           7823
  +# of expected passes           8977

gdb/ChangeLog:
2017-11-29  Pedro Alves  <palves@redhat.com>

	* NEWS: Mention that breakpoints on C++ functions are now set on
	on all namespaces/classes by default, and mention "break
	-qualified".
	* ax-gdb.c (agent_command_1): Adjust to pass a
	symbol_name_match_type to new_linespec_location.
	* breakpoint.c (parse_breakpoint_sals): Adjust to
	get_linespec_location's return type change.
	(strace_marker_create_sals_from_location): Adjust to pass a
	symbol_name_match_type to new_linespec_location.
	(strace_marker_decode_location): Adjust to get_linespec_location's
	return type change.
	(strace_command): Adjust to pass a symbol_name_match_type to
	new_linespec_location.
	(LOCATION_HELP_STRING): Add paragraph about wildmatching, and
	mention "-qualified".
	* c-lang.c (cplus_language_defn): Install cp_search_name_hash.
	* completer.c (explicit_location_match_type::MATCH_QUALIFIED): New
	enumerator.
	(complete_address_and_linespec_locations): New parameter
	'match_type'.  Pass it down.
	(explicit_options): Add "-qualified".
	(collect_explicit_location_matches): Pass the requested match type
	to the linespec completers.  Handle MATCH_QUALIFIED.
	(location_completer): Handle "-qualified" combined with linespecs.
	* cp-support.c (cp_search_name_hash): New.
	(cp_symbol_name_matches_1): Implement wild matching for C++.
	(cp_fq_symbol_name_matches): Reimplement.
	(cp_get_symbol_name_matcher): Return different matchers depending
	on the lookup name's match type.
	(selftests::test_cp_symbol_name_matches): Add wild matching tests.
	* cp-support.h (cp_search_name_hash): New declaration.
	* dwarf2read.c
	(selftests::dw2_expand_symtabs_matching::test_symbols): Add
	symbols.
	(test_dw2_expand_symtabs_matching_symbol): Add wild matching
	tests.
	* guile/scm-breakpoint.c (gdbscm_register_breakpoint_x): Adjust to
	pass a symbol_name_match_type to new_linespec_location.
	* linespec.c (linespec_parse_basic): Lookup function symbols using
	the parser's symbol name match type.
	(convert_explicit_location_to_linespec): New
	symbol_name_match_type parameter.  Pass it down to
	find_linespec_symbols.
	(convert_explicit_location_to_sals): Pass the location's name
	match type to convert_explicit_location_to_linespec.
	(parse_linespec): New match_type parameter.  Save it in the
	parser.
	(linespec_parser_new): Default to symbol_name_match_type::WILD.
	(linespec_complete_function): New symbol_name_match_type
	parameter.  Use it.
	(complete_linespec_component): Pass down the parser's recorded
	name match type.
	(linespec_complete_label): New symbol_name_match_type parameter.
	Use it.
	(linespec_complete): New symbol_name_match_type parameter.  Save
	it in the parser and pass it down.  Adjust to
	get_linespec_location's prototype change.
	(find_function_symbols, find_linespec_symbols): New
	symbol_name_match_type parameter.  Pass it down instead of
	assuming symbol_name_match_type::WILD.
	* linespec.h (linespec_complete, linespec_complete_function)
	(linespec_complete_label): New symbol_name_match_type parameter.
	* location.c (event_location::linespec_location): Now a struct
	linespec_location.
	(EL_LINESPEC): Adjust.
	(initialize_explicit_location): Default to
	symbol_name_match_type::WILD.
	(new_linespec_location): New symbol_name_match_type parameter.
	Record it in the location.
	(get_linespec_location): Now returns a struct linespec_location.
	(new_explicit_location): Also copy func_name_match_type.
	(explicit_to_string_internal)
	(string_to_explicit_location): Handle "-qualified".
	(copy_event_location): Adjust to LINESPEC_LOCATION type change.
	Copy symbol_name_match_type fields.
	(event_location_deleter::operator()): Adjust to LINESPEC_LOCATION
	type change.
	(event_location_to_string): Adjust to LINESPEC_LOCATION type
	change.  Handle "-qualfied".
	(string_to_explicit_location): Handle "-qualified".
	(string_to_event_location_basic): New symbol_name_match_type
	parameter.  Pass it down.
	(string_to_event_location): Handle "-qualified".
	* location.h (struct linespec_location): New.
	(explicit_location::func_name_match_type): New field.
	(new_linespec_location): Now returns a const linespec_location *.
	(string_to_event_location_basic): New symbol_name_match_type
	parameter.
	(explicit_completion_info::saw_explicit_location_option): New
	field.
	* mi/mi-cmd-break.c (mi_cmd_break_insert_1): Adjust to pass a
	symbol_name_match_type to new_linespec_location.
	* python/py-breakpoint.c (bppy_init): Likewise.
	* python/python.c (gdbpy_decode_line): Likewise.

gdb/testsuite/ChangeLog:
2017-11-29  Pedro Alves  <palves@redhat.com>

	* gdb.base/langs.exp: Use -qualified.
	* gdb.cp/meth-typedefs.exp: Use -qualified, and add tests without
	it.
	* gdb.cp/namespace.exp: Use -qualified.
	* gdb.linespec/cpcompletion.exp (overload-2, fqn, fqn-2)
	(overload-3, template-overload, template-ret-type, const-overload)
	(const-overload-quoted, anon-ns, ambiguous-prefix): New
	procedures.
	(test_driver): Call them.
	* gdb.cp/save-bp-qualified.cc: New.
	* gdb.cp/save-bp-qualified.exp: New.
	* gdb.linespec/explicit.exp: Test -qualified.
	* lib/completion-support.exp (completion::explicit_opts_list): Add
	"-qualified".
	* lib/gdb.exp (gdb_breakpoint): Handle "qualified".

gdb/doc/ChangeLog:
2017-11-29  Pedro Alves  <palves@redhat.com>

	* gdb.texinfo (Linespec Locations): Document how "function" is
	interpreted in C++ and Ada.  Document "-qualified".
	(Explicit Locations): Document how "-function" is interpreted in
	C++ and Ada.  Document "-qualified".
 2017-11-29 19:43:48 +00:00
Sergio Durigan Junior
935676c92f Convert generic probe interface to C++ (and perform some cleanups) 
This patch converts the generic probe interface (gdb/probe.[ch]) to
C++, and also performs some cleanups that were on my TODO list for a
while.

The main changes were the conversion of 'struct probe' to 'class
probe', and 'struct probe_ops' to 'class static_probe_ops'.  The
former now contains all the "dynamic", generic methods that act on a
probe + the generic data related to it; the latter encapsulates a
bunch of "static" methods that relate to the probe type, but not to a
specific probe itself.

I've had to do a few renamings (e.g., on 'struct bound_probe' the
field is called 'probe *prob' now, instead of 'struct probe *probe')
because GCC was complaining about naming the field using the same name
as the class.  Nothing major, though.  Generally speaking, the logic
behind and the design behind the code are the same.

Even though I'm sending a series of patches, they need to be tested
and committed as a single unit, because of inter-dependencies.  But it
should be easier to review in separate logical units.

I've regtested this patch on BuildBot, no regressions found.

gdb/ChangeLog:
2017-11-22  Sergio Durigan Junior  <sergiodj@redhat.com>

	* break-catch-throw.c (fetch_probe_arguments): Use
	'probe.prob' instead of 'probe.probe'.
	* breakpoint.c (create_longjmp_master_breakpoint): Call
	'can_evaluate_arguments' and 'get_relocated_address' methods
	from probe.
	(create_exception_master_breakpoint): Likewise.
	(add_location_to_breakpoint): Use 'sal->prob' instead of
	'sal->probe'.
	(bkpt_probe_insert_location): Call 'set_semaphore' method from
	probe.
	(bkpt_probe_remove_location): Likewise, for 'clear_semaphore'.
	* elfread.c (elf_get_probes): Use 'static_probe_ops' instead
	of 'probe_ops'.
	(probe_key_free): Call 'delete' on probe.
	(check_exception_resume): Use 'probe.prob' instead of
	'probe.probe'.
	* location.c (string_to_event_location_basic): Call
	'probe_linespec_to_static_ops'.
	* probe.c (class any_static_probe_ops): New class.
	(any_static_probe_ops any_static_probe_ops): New variable.
	(parse_probes_in_pspace): Receive 'static_probe_ops' as
	argument.  Adjust code to reflect change.
	(parse_probes): Use 'static_probe_ops' instead of
	'probe_ops'.  Adjust code to reflect change.
	(find_probes_in_objfile): Call methods to get name and
	provider from probe.
	(find_probe_by_pc): Use 'result.prob' instead of
	'result.probe'.  Call 'get_relocated_address' method from
	probe.
	(collect_probes): Adjust comment and argument list to receive
	'static_probe_ops' instead of 'probe_ops'.  Adjust code to
	reflect change.  Call necessary methods from probe.
	(compare_probes): Call methods to get name and provider from
	probes.
	(gen_ui_out_table_header_info): Receive 'static_probe_ops'
	instead of 'probe_ops'.  Use 'std::vector' instead of VEC,
	adjust code accordingly.
	(print_ui_out_not_applicables): Likewise.
	(info_probes_for_ops): Rename to...
	(info_probes_for_spops): ...this.  Receive 'static_probe_ops'
	as argument instead of 'probe_ops'.  Adjust code.  Call
	necessary methods from probe.
	(info_probes_command): Use 'info_probes_for_spops'.
	(enable_probes_command): Pass correct argument to
	'collect_probes'.  Call methods from probe.
	(disable_probes_command): Likewise.
	(get_probe_address): Move to 'any_static_probe_ops::get_address'.
	(get_probe_argument_count): Move to
	'any_static_probe_ops::get_argument_count'.
	(can_evaluate_probe_arguments): Move to
	'any_static_probe_ops::can_evaluate_arguments'.
	(evaluate_probe_argument): Move to
	'any_static_probe_ops::evaluate_argument'.
	(probe_safe_evaluate_at_pc): Use 'probe.prob' instead of
	'probe.probe'.
	(probe_linespec_to_ops): Rename to...
	(probe_linespec_to_static_ops): ...this.  Adjust code.
	(probe_any_is_linespec): Rename to...
	(any_static_probe_ops::is_linespec): ...this.
	(probe_any_get_probes): Rename to...
	(any_static_probe_ops::get_probes): ...this.
	(any_static_probe_ops::type_name): New method.
	(any_static_probe_ops::gen_info_probes_table_header): New
	method.
	(compute_probe_arg): Use 'pc_probe.prob' instead of
	'pc_probe.probe'.  Call methods from probe.
	(compile_probe_arg): Likewise.
	(std::vector<const probe_ops *> all_probe_ops): Delete.
	(std::vector<const static_probe_ops *> all_static_probe_ops):
	New variable.
	(_initialize_probe): Use 'all_static_probe_ops' instead of
	'all_probe_ops'.
	* probe.h (struct info_probe_column) <field_name>: Delete
	extraneous newline
	(info_probe_column_s): Delete type and VEC.
	(struct probe_ops): Delete.  Replace with...
	(class static_probe_ops): ...this and...
	(clas probe): ...this.
	(struct bound_probe) <bound_probe>: Delete extraneous
	newline.  Adjust constructor to receive 'probe' instead of
	'struct probe'.
	<probe>: Rename to...
	<prob>: ...this.  Delete extraneous newline.
	<objfile>: Delete extraneous newline.
	(register_probe_ops): Delete unused prototype.
	(info_probes_for_ops): Rename to...
	(info_probes_for_spops): ...this.  Adjust comment.
	(get_probe_address): Move to 'probe::get_address'.
	(get_probe_argument_count): Move to
	'probe::get_argument_count'.
	(can_evaluate_probe_arguments): Move to
	'probe::can_evaluate_arguments'.
	(evaluate_probe_argument): Move to 'probe::evaluate_argument'.
	* solib-svr4.c (struct svr4_info): Adjust comment.
	(struct probe_and_action) <probe>: Rename to...
	<prob>: ...this.
	(register_solib_event_probe): Receive 'probe' instead of
	'struct probe' as argument.  Use 'prob' instead of 'probe'
	when applicable.
	(solib_event_probe_action): Call 'get_argument_count' method
	from probe.  Adjust comment.
	(svr4_handle_solib_event): Adjust comment.  Call
	'evaluate_argument' method from probe.
	(svr4_create_probe_breakpoints): Call 'get_relocated_address'
	from probe.
	(svr4_create_solib_event_breakpoints): Use 'probe' instead of
	'struct probe'.  Call 'can_evaluate_arguments' from probe.
	* symfile.h: Forward declare 'class probe' instead of 'struct
	probe'.
	* symtab.h: Likewise.
	(struct symtab_and_line) <probe>: Rename to...
	<prob>: ...this.
	* tracepoint.c (start_tracing): Use 'prob' when applicable.
	Call probe methods.
	(stop_tracing): Likewise.
 2017-11-22 19:13:44 -05:00
Simon Marchi
5c63242595 Make output_thread_groups take an std::vector<int> 
A simple replacement of VEC with std::vector.

gdb/ChangeLog:

	* breakpoint.c (output_thread_groups): Take an std::vector.
	(print_one_breakpoint_location): Adjust.
 2017-11-17 13:03:34 -05:00
Pedro Alves
688fca4fe6 Fix swallowed "Quit" when inserting breakpoints 
If GDB is inserting a breakpoint and you type Ctrl-C at the exact
"right" time, you'll hit a QUIT call in target_read, and the
breakpoint insertion is cancelled.  However, the related TRY/CATCH
code in insert_bp_location does:

 		  CATCH (e, RETURN_MASK_ALL)
 		    {
		      bp_err = e.error;
		      bp_err_message = e.message;
		    }

The problem with that is that a RETURN_QUIT exception has e.error ==
0, which means that further below, in the places that check for error
with:

      if (bp_err != GDB_NO_ERROR)

because GDB_NO_ERROR == 0, GDB continues as if the breakpoint was
inserted succesfully, and resumes the inferior.  Since the breakpoint
wasn't inserted the inferior runs free, out of our control...

Fix this by having insert_bp_location store a copy of the whole
exception instead of just a error/message parts, and then checking
"gdb_exception::reason" instead.

This was exposed by the new gdb.base/bp-cmds-continue-ctrl-c.exp
testcase added later in the series.

gdb/ChangeLog:
2017-11-16  Pedro Alves  <palves@redhat.com>

	* breakpoint.c (insert_bp_location): Replace bp_err and
	bp_err_message locals by a gdb_exception local.
 2017-11-16 18:44:42 +00:00
Tom Tromey
eb4c3f4aaa Constify add_setshow_* 
This constifies the add_setshow_* family of functions, and then fixes
up the fallout.  The bulk of this patch was written by script.

gdb/ChangeLog
2017-11-07  Tom Tromey  <tom@tromey.com>

	* ada-lang.c (catch_ada_exception_command): Constify.
	(catch_assert_command): Constify.
	* break-catch-throw.c (catch_catch_command, catch_throw_command)
	(catch_rethrow_command): Constify.
	(catch_exception_command_1): Constify.
	* breakpoint.h (add_catch_command): Constify.
	* break-catch-syscall.c (catch_syscall_command_1): Constify.
	(catch_syscall_split_args): Constify.
	* break-catch-sig.c (catch_signal_command): Constify.
	(catch_signal_split_args): Constify.
	* cli/cli-decode.h (struct cmd_list_element) <function>: Use
	cmd_const_sfunc_ftype.
	* cli/cli-decode.c (add_setshow_cmd_full): Constify.
	(add_setshow_enum_cmd, add_setshow_auto_boolean_cmd)
	(add_setshow_boolean_cmd, add_setshow_filename_cmd)
	(add_setshow_string_cmd, struct cmd_list_element)
	(add_setshow_optional_filename_cmd, add_setshow_integer_cmd)
	(add_setshow_uinteger_cmd, add_setshow_zinteger_cmd)
	(add_setshow_zuinteger_unlimited_cmd, add_setshow_zuinteger_cmd):
	Constify.
	(set_cmd_sfunc): Constify.
	(empty_sfunc): Constify.
	* command.h (add_setshow_enum_cmd, add_setshow_auto_boolean_cmd)
	(add_setshow_boolean_cmd, add_setshow_filename_cmd)
	(add_setshow_string_cmd, add_setshow_string_noescape_cmd)
	(add_setshow_optional_filename_cmd, add_setshow_integer_cmd)
	(add_setshow_uinteger_cmd, add_setshow_zinteger_cmd)
	(add_setshow_zuinteger_cmd, add_setshow_zuinteger_unlimited_cmd):
	Constify.
	(set_cmd_sfunc): Constify.
	(cmd_sfunc_ftype): Remove.
	* compile/compile.c (set_compile_args): Constify.
	* infrun.c (set_disable_randomization): Constify.
	* infcmd.c (set_args_command, set_cwd_command): Constify.
	* breakpoint.c (set_condition_evaluation_mode): Constify.
	(add_catch_command): Constify.
	(catch_fork_command_1, catch_exec_command_1)
	(catch_load_command_1, catch_unload_command_1): Constify.
	(catch_load_or_unload): Constify.
	* guile/scm-param.c (pascm_set_func): Constify.
	(add_setshow_generic): Constify.
	* python/py-param.c (get_set_value): Constify.
	* top.h (set_verbose): Constify.
	* tui/tui-win.c (tui_set_var_cmd): Constify.
	* mi/mi-main.c (set_mi_async_command): Constify.
	* cli/cli-logging.c (set_logging_overwrite)
	(set_logging_redirect): Constify.
	* value.c (set_max_value_size): Constify.
	* valprint.c (set_input_radix, set_output_radix): Constify.
	* utils.c (set_width_command, set_height_command): Constify.
	* typeprint.c (set_print_type_methods, set_print_type_typedefs): Constify.
	* tracepoint.c (set_disconnected_tracing)
	(set_circular_trace_buffer, set_trace_buffer_size)
	(set_trace_user, set_trace_notes, set_trace_stop_notes): Constify.
	* top.c (set_history_size_command, set_verbose, set_editing)
	(set_gdb_datadir, set_history_filename): Constify.
	* target.c (set_targetdebug, maint_set_target_async_command)
	(maint_set_target_non_stop_command, set_target_permissions)
	(set_write_memory_permission): Constify.
	(open_target): Constify.
	* target-descriptions.c (set_tdesc_filename_cmd): Constify.
	* target-dcache.c (set_stack_cache, set_code_cache): Constify.
	* symtab.c (set_symbol_cache_size_handler): Constify.
	* symfile.c (set_ext_lang_command): Constify.
	* symfile-debug.c (set_debug_symfile): Constify.
	* source.c (set_directories_command): Constify.
	* solib.c (reload_shared_libraries, gdb_sysroot_changed): Constify.
	* serial.c (set_parity): Constify.
	* rs6000-tdep.c (powerpc_set_soft_float, powerpc_set_vector_abi): Constify.
	* remote.c (set_remote_exec_file, set_remotebreak)
	(set_remote_protocol_Z_packet_cmd, set_range_stepping): Constify.
	* record.c (set_record_insn_history_size)
	(set_record_call_history_size): Constify.
	* record-full.c (set_record_full_insn_max_num): Constify.
	* proc-api.c (set_procfs_trace_cmd, set_procfs_file_cmd): Constify.
	* osabi.c (set_osabi): Constify.
	* mips-tdep.c (set_mips64_transfers_32bit_regs)
	(reinit_frame_cache_sfunc, mips_abi_update): Constify.
	* maint.c (maintenance_set_profile_cmd): Constify.
	* linux-thread-db.c (set_libthread_db_search_path): Constify.
	* language.c (set_language_command, set_range_command)
	(set_case_command): Constify.
	* infrun.c (set_non_stop, set_observer_mode)
	(set_stop_on_solib_events, set_schedlock_func)
	(set_exec_direction_func): Constify.
	* infcmd.c (set_inferior_tty_command): Constify.
	* disasm.c (set_disassembler_options_sfunc): Constify.
	* demangle.c (set_demangling_command): Constify.
	* dcache.c (set_dcache_size, set_dcache_line_size): Constify.
	* cris-tdep.c (set_cris_version, set_cris_mode)
	(set_cris_dwarf2_cfi): Constify.
	* corefile.c (set_gnutarget_command): Constify.
	* charset.c (set_host_charset_sfunc, set_target_charset_sfunc)
	(set_target_wide_charset_sfunc): Constify.
	* breakpoint.c (update_dprintf_commands): Constify.
	* auto-load.c (set_auto_load_dir, set_auto_load_safe_path): Constify.
	* arm-tdep.c (set_fp_model_sfunc, arm_set_abi)
	(set_disassembly_style_sfunc): Constify.
	* arch-utils.c (set_endian, set_architecture): Constify.
	* alpha-tdep.c (reinit_frame_cache_sfunc): Constify.
	* agent.c (set_can_use_agent): Constify.
 2017-11-07 13:59:09 -07:00
Tom Tromey
5fed81ff35 Remove cmd_cfunc_ftype 
This removes cmd_cfunc_ftype and the non-const overload of add_cmd;
then fixes up the fallout.

For the most part this patch is straightforward.  There are a few
files (go32-nat.c, windows-nat.c, and gnu-nat.c) that I could not
compile; so I made a best effort there.

gdb/ChangeLog
2017-11-07  Tom Tromey  <tom@tromey.com>

	* go32-nat.c (go32_sysinfo, go32_sldt, go32_sgdt, go32_sidt)
	(go32_pde, go32_pte, go32_pte_for_address): Constify.
	* gnu-nat.c (_parse_bool_arg, show_thread_default_pause_cmd)
	(set_thread_default_pause_cmd, set_thread_default_run_cmd)
	(show_thread_default_run_cmd, set_thread_default_detach_sc_cmd)
	(parse_int_arg, show_thread_default_detach_sc_cmd)
	(set_signals_cmd, show_signals_cmd, set_sig_thread_cmd)
	(show_sig_thread_cmd, set_stopped_cmd, show_stopped_cmd)
	(set_exceptions_cmd, show_exceptions_cmd, set_task_pause_cmd)
	(show_task_pause_cmd, set_task_detach_sc_cmd)
	(show_task_detach_sc_cmd, set_task_exc_port_cmd)
	(set_noninvasive_cmd, set_thread_pause_cmd)
	(show_thread_pause_cmd, set_thread_run_cmd, show_thread_run_cmd)
	(set_thread_detach_sc_cmd, show_thread_detach_sc_cmd)
	(set_thread_exc_port_cmd, thread_takeover_sc_cmd): Constify.
	* windows-nat.c (display_selectors): Constify.
	* cli/cli-decode.h (struct cmd_list_element) <function>: Remove
	non-const "cfunc".
	* cli/cli-decode.c (set_cmd_cfunc): Remove non-const overload.
	(cmd_cfunc_eq): Likewise.
	(struct cmd_list_element): Likewise.
	(do_cfunc): Remove.
	(cli_user_command_p): Update.
	* command.h (add_cmd): Remove non-const overload.
	(cmd_cfunc_ftype): Remove typedef.
	(cmd_cfunc_eq): Remove non-const overload.
	* value.c (show_values): Constify.
	* thread.c (thread_apply_all_command): Constify.
	* symfile.c (load_command): Constify.
	* source.c (directory_command): Constify.
	* maint.c (maintenance_internal_error)
	(maintenance_demangler_warning, maintenance_space_display)
	(maintenance_print_architecture, maintenance_translate_address)
	(maintenance_info_selftests, maintenance_internal_warning):
	Constify.
	* breakpoint.c (disable_trace_command, enable_trace_command):
	Constify.
	* auto-load.c (info_auto_load_local_gdbinit, add_auto_load_dir):
	Constify.
	(add_auto_load_safe_path): Constify.
	* guile/scm-auto-load.c (info_auto_load_guile_scripts): Constify.
	* top.h (show_commands): Constify.
	* linux-thread-db.c (info_auto_load_libthread_db): Constify.
	* sparc64-tdep.c (adi_examine_command): Constify.
	(adi_assign_command): Constify.
 2017-11-07 13:59:09 -07:00
Tom Tromey
1d12d88f18 Constify add_info 
This patch constifies add_info and updates all the info commands.  The
bulk of this patch was written using a script; and then I did a manual
pass to fix up the remaining compilation errors.

I could not compile every changed file; in particular nto-procfs.c,
gnu-nat.c, and darwin-nat-info.c; but I at least tried to check the
correctness by inspection.

gdb/ChangeLog
2017-11-07  Tom Tromey  <tom@tromey.com>

	* frame.h (info_locals_command, info_args_command): Constify.
	* auto-load.h (auto_load_info_scripts): Constify.
	* inferior.h (registers_info): Constify.
	* copying.c: Rebuild.
	* copying.awk: Constify generated commands.
	* auto-load.c (auto_load_info_scripts)
	(info_auto_load_gdb_scripts): Constify.
	* cli/cli-decode.c (struct cmd_list_element): Take a
	cmd_const_cfunc_ftype.
	* command.h (add_info): Take a cmd_const_cfunc_ftype.
	* tui/tui-win.c (tui_all_windows_info): Constify.
	* python/py-auto-load.c (info_auto_load_python_scripts):
	Constify.
	* cli/cli-cmds.c (show_command): Remove non-const overload.
	* tracepoint.c (info_tvariables_command, info_scope_command):
	Constify.
	(info_static_tracepoint_markers_command): Constify.
	* thread.c (info_threads_command): Constify.
	(print_thread_info_1): Constify.
	* target.c (info_target_command): Constify.
	* symtab.c (info_sources_command, info_functions_command)
	(info_types_command): Constify.
	(info_variables_command): Remove non-const overload.
	* symfile.c (info_ext_lang_command): Constify.
	* stack.c (info_frame_command, info_locals_command)
	(info_args_command): Constify.
	(backtrace_command): Remove non-const overload.
	* source.c (info_source_command, info_line_command): Constify.
	* solib.c (info_sharedlibrary_command): Constify.
	* skip.c (info_skip_command): Constify.
	* ser-go32.c (info_serial_command): Constify.
	* reverse.c (info_bookmarks_command): Constify.
	* printcmd.c (info_symbol_command, info_address_command)
	(info_display_command): Constify.
	* osdata.c (info_osdata_command): Constify.
	* objc-lang.c (info_selectors_command, info_classes_command):
	Constify.
	* nto-procfs.c (procfs_pidlist, procfs_meminfo): Constify.
	* memattr.c (info_mem_command): Constify.
	* macrocmd.c (info_macro_command, info_macros_command): Constify.
	* linux-fork.c (info_checkpoints_command): Constify.
	* infrun.c (info_signals_command): Constify.
	* inflow.c (info_terminal_command): Constify.
	* inferior.c (info_inferiors_command): Constify.
	(print_inferior): Constify.
	* infcmd.c (info_program_command, info_all_registers_command)
	(info_registers_command, info_vector_command)
	(info_float_command): Constify.
	(registers_info): Constify.
	* gnu-nat.c (info_send_rights_cmd, info_recv_rights_cmd)
	(info_port_sets_cmd, info_dead_names_cmd, info_port_rights_cmd):
	Constify.
	* f-valprint.c (info_common_command): Constify.
	* dcache.c (info_dcache_command): Constify.
	(dcache_info_1): Constify.
	* darwin-nat-info.c (info_mach_tasks_command)
	(info_mach_task_command, info_mach_ports_command)
	(info_mach_port_command, info_mach_threads_command)
	(info_mach_thread_command, info_mach_regions_command)
	(info_mach_regions_recurse_command, info_mach_region_command)
	(info_mach_exceptions_command): Constify.
	(get_task_from_args): Constify.
	* cp-support.c (info_vtbl_command): Constify.
	* breakpoint.c (info_watchpoints_command)
	(info_tracepoints_command): Constify.
	(info_breakpoints_command): Remove non-const overload.
	* avr-tdep.c (avr_io_reg_read_command): Constify.
	* auxv.c (info_auxv_command): Constify.
	* ada-tasks.c (info_tasks_command): Constify.
	(info_task): Constify.
	* ada-lang.c (info_exceptions_command): Constify.
 2017-11-07 13:59:09 -07:00
Tom Tromey
0b39b52e6e Constify add_com 
This changes add_com to take a cmd_const_cfunc_ftype, and then fixes
up all the command implementations.

In most cases this is trivial.

In a couple of places I had to again introduce a temporary non-const
overload.  These overloads will be removed when add_info is
constified.

gdb/ChangeLog
2017-11-07  Tom Tromey  <tom@tromey.com>

	* solib.h (no_shared_libraries): Constify.
	* frame.h (return_command): Constify.
	* cli/cli-cmds.h (quit_command): Constify.
	* top.h (quit_command, execute_command): Constify.
	* target.h (flash_erase_command): Constify.
	* inferior.h (set_inferior_args, attach_command): Constify.
	* tracepoint.h (start_tracing, stop_tracing): Constify.
	* breakpoint.h (break_command, tbreak_command)
	(hbreak_command_wrapper, thbreak_command_wrapper)
	(rbreak_command_wrapper, watch_command_wrapper)
	(awatch_command_wrapper, rwatch_command_wrapper)
	(get_tracepoint_by_number): Constify.
	* symtab.c (info_variables_command, rbreak_command)
	(symtab_symbol_info): Constify.
	(info_variables_command): Add non-const overload.
	* top.c (dont_repeat_command): Constify.
	* breakpoint.c (ignore_command, commands_command)
	(condition_command, tbreak_command, hbreak_command)
	(thbreak_command, clear_command, break_command)
	(info_breakpoints_command, watch_command, rwatch_command)
	(awatch_command, trace_command, ftrace_command, strace_command)
	(trace_pass_command, break_range_command, dprintf_command)
	(agent_printf_command, get_tracepoint_by_number)
	(watch_maybe_just_location, trace_pass_command): Constify.
	(info_breakpoints_command): Add non-const overload.
	* tracefile.c (tsave_command): Constify.
	* infcmd.c (attach_command, disconnect_command, signal_command)
	(queue_signal_command, stepi_command, nexti_command)
	(finish_command, next_command, step_command, until_command)
	(advance_command, jump_command, continue_command, run_command)
	(start_command, starti_command, interrupt_command)
	(run_command_1, set_inferior_args, step_1): Constify.
	* inferior.c (add_inferior_command, remove_inferior_command)
	(clone_inferior_command): Constify.
	* linux-fork.c (checkpoint_command, restart_command): Constify.
	* windows-nat.c (signal_event_command): Constify.
	* guile/guile.c (guile_repl_command, guile_command): Constify.
	* printcmd.c (x_command, display_command, printf_command)
	(output_command, set_command, call_command, print_command)
	(eval_command): Constify.
	(non_const_set_command): Remove.
	(_initialize_printcmd): Update.
	* source.c (forward_search_command, reverse_search_command):
	Constify.
	* jit.c (jit_reader_load_command, jit_reader_unload_command):
	Constify.
	* infrun.c (handle_command): Constify.
	* memattr.c (mem_command): Constify.
	* stack.c (return_command, up_command, up_silently_command)
	(down_command, down_silently_command, frame_command)
	(backtrace_command, func_command, backtrace_command_1): Constify.
	(backtrace_command): Add non-const overload.
	* remote-sim.c (simulator_command): Constify.
	* exec.c (set_section_command): Constify.
	* tracepoint.c (tdump_command, trace_variable_command)
	(tstatus_command, tstop_command, tstart_command)
	(end_actions_pseudocommand, while_stepping_pseudocommand)
	(collect_pseudocommand, teval_pseudocommand, actions_command)
	(start_tracing, stop_tracing): Constify.
	* value.c (init_if_undefined_command): Constify.
	* tui/tui-stack.c (tui_update_command): Constify.
	* tui/tui-win.c (tui_refresh_all_command)
	(tui_set_tab_width_command, tui_set_win_height_command)
	(tui_set_focus_command, tui_scroll_forward_command)
	(tui_scroll_backward_command, tui_scroll_left_command)
	(tui_scroll_right_command, parse_scrolling_args, tui_set_focus)
	(tui_set_win_height): Constify.
	* tui/tui-layout.c (tui_layout_command): Constify.
	* procfs.c (proc_trace_syscalls, proc_trace_sysentry_cmd)
	(proc_trace_sysexit_cmd, proc_untrace_sysentry_cmd)
	(proc_untrace_sysexit_cmd): Constify.
	* remote.c (threadlist_test_cmd, threadinfo_test_cmd)
	(threadset_test_cmd, threadlist_update_test_cmd)
	(threadalive_test): Constify.
	* objc-lang.c (print_object_command): Constify.
	* command.h (add_com): Constify.
	* cli/cli-dump.c (restore_command): Constify.
	* cli/cli-cmds.c (pwd_command, echo_command, quit_command)
	(help_command, complete_command, shell_command, edit_command)
	(list_command, disassemble_command, make_command)
	(apropos_command, alias_command): Constify.
	* cli/cli-script.c (document_command, define_command)
	(while_command, if_command, validate_comname): Constify.
	* cli/cli-decode.c (struct cmd_list_element): Change type of
	"fun".
	* target.c (do_monitor_command, flash_erase_command): Constify.
	* regcache.c (reg_flush_command): Constify.
	* reverse.c (reverse_step, reverse_next, reverse_stepi)
	(reverse_nexti, reverse_continue, reverse_finish)
	(save_bookmark_command, goto_bookmark_command)
	(exec_reverse_once): Constify.
	* python/python.c (python_interactive_command, python_command):
	Constify.
	* typeprint.c (ptype_command, whatis_command, whatis_exp):
	Constify.
	* solib.c (sharedlibrary_command, no_shared_libraries): Constify.
	* gcore.c (gcore_command): Constify.
 2017-11-07 13:59:09 -07:00
Tom Tromey
ee7ddd7132 Constify add_abbrev_prefix_cmd 
This changes add_abbrev_prefix_cmd to take a const-taking callback
function and then fixes the one caller.

gdb/ChangeLog
2017-11-07  Tom Tromey  <tom@tromey.com>

	* breakpoint.c (stop_command): Constify.
	* cli/cli-decode.c (struct cmd_list_element): Constify.
	* command.h (add_abbrev_prefix_cmd): Constify.
 2017-11-07 13:59:08 -07:00
Pedro Alves
95e95a6de2 Make breakpoint/location number parsing error output consistent 
... and also make GDB catch a few more cases of invalid input.

This fixes the inconsistency in GDB's output (e.g., "bad" vs "Bad")
exposed by the new tests added in the previous commit.

Also, makes the "0-0" and "inverted range" cases be loud errors.

Also makes GDB reject negative breakpoint number in ranges.  We
already rejected negative number literals, but you could still subvert
that via convenience variables, like:

  (gdb) set $bp -1
  (gdb) disable $bp.1-2

The change to get_number_trailer fixes a bug exposed by the new tests.
The function did not handle parsing "-$num".  [This wasn't visible in
the gdb.multi/tids.exp (which has similar tests) because the TID range
parsing is implemented differently.]

gdb/ChangeLog:
2017-11-07  Pedro Alves  <palves@redhat.com>

	* breakpoint.c (extract_bp_kind): New enum.
	(extract_bp_num, extract_bp_or_bp_range): New functions, partially
	factored out from ...
	(extract_bp_number_and_location): ... here.
	* cli/cli-utils.c (get_number_trailer): Handle '-$variable'.

gdb/testsuite/ChangeLog:
2017-11-07  Pedro Alves  <palves@redhat.com>

	* gdb.base/ena-dis-br.exp (test_ena_dis_br): Adjust test.
	* gdb.cp/ena-dis-br-range.exp: Adjust tests.
	(disable_invalid, disable_inverted, disable_negative): New
	procedures.
	("bad numbers"): New set of tests.
 2017-11-07 11:07:19 +00:00
Pedro Alves
cc638e867c Breakpoint location parsing: always error instead of warning 
It's odd that when parsing a breakpoint or location number, we error out
in most cases, but warn in others.

  (gdb) disable 1-
  bad breakpoint number at or near: '1-'
  (gdb) disable -1
  bad breakpoint number at or near: '-1'
  (gdb) disable .foo
  bad breakpoint number at or near: '.foo'
  (gdb) disable foo.1
  Bad breakpoint number 'foo.1'
  (gdb) disable 1.foo
  warning: bad breakpoint number at or near '1.foo'

This changes GDB to always error out.  It required touching one testcase
that expected the warning.

gdb/ChangeLog:
2017-11-07  Pedro Alves  <palves@redhat.com>

	* breakpoint.c (extract_bp_number_and_location): Change return
	type to void.  Throw error instead of warning.
	(enable_disable_command): Adjust.

gdb/testsuite/ChangeLog:
2017-11-07  Pedro Alves  <palves@redhat.com>

	* gdb.base/ena-dis-br.exp: Don't expect "warning:".
 2017-11-07 11:06:00 +00:00
Xavier Roirand
d0fe47010f Allow enabling/disabling breakpoint location ranges 
When a breakpoint has multiple locations, like e.g.:

 Num  Type       Disp Enb  Address    What
 1    breakpoint keep y    <MULTIPLE>
 1.1                  y    0x080486a2 in void foo<int>()...
 1.2                  y    0x080486ca in void foo<double>()...
 [....]
 1.5                  y    0x080487fa in void foo<long>()...

it's possible to enable/disable the individual locations using the
'<breakpoint_number>.<location_number>' syntax, like e.g.:

 (gdb) disable 1.2 1.3 1.4 1.5

That's inconvenient when you have a long list of locations to disable,
however.

This patch adds shorthand for the above, by making it possible to
specify a range of locations with the following syntax (similar to
thread id ranges):

 <breakpoint_number>.<first_location_number>-<last_location_number>

For example, the command above can now be simplified to:

 (gdb) disable 1.2-5

gdb/ChangeLog:
2017-11-07  Xavier Roirand  <roirand@adacore.com>
	    Pedro Alves  <palves@redhat.com>

	* breakpoint.c (map_breakpoint_number_range): New, factored out
	from ...
	(map_breakpoint_numbers): ... here.
	(find_location_by_number): Change parameters from string to
	breakpoint number and location.
	(extract_bp_number_and_location): New function.
	(enable_disable_bp_num_loc)
	(enable_disable_breakpoint_location_range)
	(enable_disable_command): New functions, factored out ...
	(enable_command, disable_command): ... these functions, and
	adjusted to support ranges.
	* NEWS: Document enable/disable breakpoint location range feature.

gdb/doc/ChangeLog:
2017-11-07  Xavier Roirand  <roirand@adacore.com>
	    Pedro Alves  <palves@redhat.com>

	* gdb.texinfo (Set Breaks): Document support for breakpoint
	location ranges in the enable/disable commands.

gdb/testsuite/ChangeLog:
2017-11-07  Xavier Roirand  <roirand@adacore.com>
	    Pedro Alves  <palves@redhat.com>

	* gdb.base/ena-dis-br.exp: Add reference to
	gdb.cp/ena-dis-br-range.exp.
	* gdb.cp/ena-dis-br-range.exp: New file.
	* gdb.cp/ena-dis-br-range.cc: New file.
 2017-11-07 11:00:31 +00:00
Tom Tromey
454dafbdf2 Introduce gdb_breakpoint_up 
This introduces gdb_breakpoint_up, a unique_ptr typedef that owns a
breakpoint.  It then changes set_momentary_breakpoint to return a
gdb_breakpoint_up and fixes up the fallout.  This then allows the
removal of make_cleanup_delete_breakpoint.

Once breakpoints are fully C++-ified, this typedef can be removed in
favor of a plain std::unique_ptr.

gdb/ChangeLog
2017-11-04  Tom Tromey  <tom@tromey.com>

	* breakpoint.c (set_momentary_breakpoint): Return
	breakpoint_up.
	(until_break_command): Update.
	(new_until_break_fsm): Change argument types to
	breakpoint_up.
	(set_momentary_breakpoint_at_pc): Return breakpoint_up.
	(do_delete_breakpoint_cleanup, make_cleanup_delete_breakpoint):
	Remove.
	* infcmd.c (finish_forward): Update.
	* breakpoint.h (set_momentary_breakpoint)
	(set_momentary_breakpoint_at_pc): Return breakpoint_up.
	(make_cleanup_delete_breakpoint): Remove.
	(struct breakpoint_deleter): New.
	(breakpoint_up): New typedef.
	* infrun.c (insert_step_resume_breakpoint_at_sal_1): Update.
	(insert_exception_resume_breakpoint): Update.
	(insert_exception_resume_from_probe): Update.
	(insert_longjmp_resume_breakpoint): Update.
	* arm-linux-tdep.c (arm_linux_copy_svc): Update.
	* elfread.c (elf_gnu_ifunc_resolver_stop): Update.
	* infcall.c (call_function_by_hand_dummy): Update
 2017-11-04 10:27:20 -06:00
Tom Tromey
c80049d3b6 Replace start_rbreak_breakpoints and end_rbreak_breakpoints 
This replaces start_rbreak_breakpoints and end_rbreak_breakpoints with
a new scoped class.  This allows the removal of a cleanup.

This also fixes an earlier memory leak regression, by changing
"string" to be a std::string.

gdb/ChangeLog
2017-11-04  Tom Tromey  <tom@tromey.com>

	* breakpoint.c
	(scoped_rbreak_breakpoints::scoped_rbreak_breakpoints): Rename
	from start_rbreak_breakpoints.
	(scoped_rbreak_breakpoints): Rename from end_rbreak_breakpoints.
	* breakpoint.h (class scoped_rbreak_breakpoints): New.
	(start_rbreak_breakpoints, end_rbreak_breakpoints): Remove.
	* symtab.c (do_end_rbreak_breakpoints): Remove.
	(rbreak_command): Use scoped_rbreak_breakpoints, std::string.
 2017-11-04 10:27:17 -06:00
Yao Qi
8b86c95921 const-fy regcache::m_aspace 
regcache::m_aspace is a const, never changed during the lifetime of
regcache object.  The address_space object is a const object too.

gdb:

2017-11-02  Yao Qi  <yao.qi@linaro.org>

	* breakpoint.c (insert_single_step_breakpoints): Update.
	* frame.c (struct frame_info) <aspace>: Add const.
	(frame_save_as_regcache): Add const.
	(get_frame_address_space): Return const address_space *.
	* frame.h (get_frame_address_space): Update declaration.
	* infrun.c (struct step_over_info) <aspace>: Add const.
	(set_step_over_info): Make aspace const.
	(displaced_step_prepare_throw): Change variable const.
	(resume): Likewise.
	(proceed): Likewise.
	(adjust_pc_after_break): Likewise.
	(save_waitstatus): Likewise.
	(handle_signal_stop): Likewise.
	(keep_going_pass_signal): Likewise.
	* jit.c (jit_frame_sniffer): Add const.
	* mips-tdep.c (mips_single_step_through_delay): Likewise.
	* ppc-linux-tdep.c (ppu2spu_sniffer): Likewise.
	* record-full.c (record_full_wait_1): Likewise.
	* regcache.c (regcache::regcache): Change parameter to const.
	* regcache.h (regcache::regcache): Likewise.
	(regcache::aspace): Return const address_space *.
	(regcache) <m_aspace>: Add const.
 2017-11-02 15:15:42 +00:00
Simon Marchi
45461e0dca Get rid of VEC(probe_p) 
Replace the remaining usages of VEC(probe_p) with std::vector.

Regtested on the buildbot.

gdb/ChangeLog:

	* probe.h: Don't include gdb_vecs.h.
	(DEF_VEC_P (probe_p)): Remove.
	(find_probes_in_objfile): Return an std::vector.
	* probe.c (find_probes_in_objfile): Likewise.
	* breakpoint.c (breakpoint_objfile_data)
	<longjmp_probes>: Change type to std::vector.
	<exception_probes>: Likewise.
	(free_breakpoint_probes): Don't manually free vectors.
	(create_longjmp_master_breakpoint): Adjust.
	(create_exception_master_breakpoint): Adjust.
	* solib-svr4.c (svr4_create_probe_breakpoints): Change
	parameter type, adjust.
	(svr4_create_solib_event_breakpoints): Adjust.
 2017-10-27 22:12:01 -04:00
Simon Marchi
43dce43945 Allocate breakpoint_objfile_data with new 
Allocate with new and free with delete.  This allows using an
std::vector in the following patch.

I renamed free_breakpoint_probes to free_breakpoint_objfile_data,
because it now doesn't only free the probes vector, but also the
breakpoint_objfile_data structure itself.

gdb/ChangeLog:

	* breakpoint.c (breakpoint_objfile_data): Initialize fields.
	(get_breakpoint_objfile_data): Allocate breakpoint_objfile_data
	with new.
	(free_breakpoint_probes): Rename to ...
	(free_breakpoint_objfile_data): ... this, and call delete on
	bp_objfile_data..
 2017-10-27 22:01:21 -04:00
Keith Seitz
4a27f119f5 Use SaL symbol name when reporting breakpoint locations 
Currently, "info break" can show some (perhaps) unexpected results when
setting a breakpoint on an inlined function:

(gdb) list
1	#include <stdio.h>
2
3	static inline void foo()
4	{
5	        printf("Hello world\n");
6	}
7
8	int main()
9	{
10	        foo();
11	        return 0;
12	}
13
(gdb) b foo
Breakpoint 1 at 0x400434: file foo.c, line 5.
(gdb) i b
Num     Type           Disp Enb Address            What
1       breakpoint     keep y   0x0000000000400434 in main at foo.c:5

GDB reported that we understood what "foo" was, but we then report that the
breakpoint is actually set in main. While that is literally true, we can
do a little better.

This is accomplished by copying the symbol for which the breakpoint was set
into the bp_location.  From there, print_breakpoint_location can use this
information to print out symbol information (if available) instead of calling
find_pc_sect_function.

With the patch installed,

(gdb) i b
Num     Type           Disp Enb Address            What
1       breakpoint     keep y   0x0000000000400434 in foo at foo.c:5

gdb/ChangeLog:

	* breakpoint.c (print_breakpoint_location): Use the symbol saved
	in the bp_location, falling back to find_pc_sect_function when
	needed.
	(add_location_to_breakpoint): Save sal->symbol.
	* breakpoint.h (struct bp_location) <symbol>: New field.
	* symtab.c (find_function_start_sal): Save the symbol into the SaL.
	* symtab.h (struct symtab_and_line) <symbol>: New field.

gdb/testsuite/ChangeLog:

	* gdb.opt/inline-break.exp (break_info_1): New procedure.
	Test "info break" for every inlined function breakpoint.
 2017-10-27 10:57:23 -07:00
Yao Qi
bd5225139c const-fy breakpoint_ops->breakpoint_hit parameter aspace 
gdb:

2017-10-26  Yao Qi  <yao.qi@linaro.org>

	* break-catch-sig.c (signal_catchpoint_breakpoint_hit): Make
	aspace const.
	* break-catch-syscall.c (breakpoint_hit_catch_syscall):
	Likewise.
	* breakpoint.c (bpstat_check_location): Remove cast.
	(breakpoint_hit_catch_fork): Make aspce const.
	(breakpoint_hit_catch_solib): Likewise.
	(breakpoint_hit_catch_exec): Likewise.
	(breakpoint_hit_ranged_breakpoint): Likewise.
	(breakpoint_hit_watchpoint): Likewise.
	(base_breakpoint_breakpoint_hit): Likewise.
	(bkpt_breakpoint_hit): Likewise.
	(dprintf_breakpoint_hit): Likewise.
	(tracepoint_breakpoint_hit): Likewise.
	* breakpoint.h (breakpoint_ops) <breakpoint_hit>: Likewise.
 2017-10-26 09:46:16 +01:00
Yao Qi
accd0bcdfe const-fy function parameter struct address_space *aspace 
This patch changes the parameter "struct address_space *aspace" to "const
address_space *aspace" in many functions.

gdb:

2017-10-26  Yao Qi  <yao.qi@linaro.org>

	* breakpoint.c (breakpoint_location_address_match): Change
	"struct address_space *" to "const address_space".
	(breakpoint_location_address_range_overlap): Likewise.
	(breakpoint_here_p): Likewise.
	(breakpoint_in_range_p): Likewise.
	(moribund_breakpoint_here_p): Likewise.
	(bp_location_inserted_here_p): Likewise.
	(software_breakpoint_inserted_here_p): Likewise.
	(hardware_breakpoint_inserted_here_p): Likewise.
	(hardware_watchpoint_inserted_in_range): Likewise.
	(bpstat_check_location): Likewise.
	(bpstat_stop_status): Likewise.
	(breakpoint_address_match): Likewise.
	(breakpoint_address_match_range): Likewise.
	(breakpoint_location_address_match): Likewise.
	(breakpoint_location_address_range_overlap): Likewise.
	(insert_single_step_breakpoint): Likewise.
	(breakpoint_has_location_inserted_here): Likewise.
	(single_step_breakpoint_inserted_here_p): Likewise.
	(pc_at_non_inline_function): Likewise.
	* breakpoint.h (bpstat_stop_status): Update declaration.
	(breakpoint_here_p): Likewise.
	(breakpoint_in_range_p): Likewise.
	(moribund_breakpoint_here_p): Likewise.
	(breakpoint_inserted_here_p): Likewise.
	(software_breakpoint_inserted_here_p): Likewise.
	(hardware_breakpoint_inserted_here_p): Likewise.
	(breakpoint_has_location_inserted_here): Likewise.
	(single_step_breakpoint_inserted_here_p): Likewise.
	(hardware_watchpoint_inserted_in_range): Likewise.
	(breakpoint_address_match): Likewise.
	(insert_single_step_breakpoint): Likewise.
	(pc_at_non_inline_function): Likewise.
	* gdbthread.h (thread_has_single_step_breakpoint_here): Likewise.
	* record.c (record_check_stopped_by_breakpoint): Likewise.
	* record.h (record_check_stopped_by_breakpoint): Likewise.
	* thread.c (thread_has_single_step_breakpoint_here): Likewise.
 2017-10-26 09:46:16 +01:00
Ulrich Weigand
edd079d9f6 Target FP: Use target format throughout expression parsing 
When parsing floating-point literals, the language parsers currently
use parse_float or some equivalent routine to parse the input string
into a DOUBLEST, which is then stored within a OP_DOUBLE expression
node.  When evaluating the expression, the OP_DOUBLE is finally
converted into a value in target format.

On the other hand, *decimal* floating-point literals are parsed
directly into target format and stored that way in a OP_DECFLOAT
expression node.  In order to eliminate the DOUBLEST, this patch
therefore unifies the handling of binary and decimal floating-
point literals and stores them both in target format within a
new OP_FLOAT expression node, replacing both OP_DOUBLE and
OP_DECFLOAT.

In order to store literals in target format, the parse_float
routine needs to know the type of the literal.  All parsers
therefore need to be changed to determine the appropriate type
(e.g. by detecting suffixes) *before* calling parse_float,
instead of after it as today.  However, this change is mostly
straightforward -- again, this is already done for decimal FP
today.

The core of the literal parsing is moved into a new routine
floatformat_from_string, mirroring floatformat_to_string.
The parse_float routine now calls either floatformat_from_string
or decimal_from_sting, allowing it to handle any type of FP
literal.

All language parsers need to be updated.  Some notes on
specific changes to the various languages:

- C: Decimal FP is now handled in parse_float, and no longer
  needs to be handled specially.

- D: Straightforward.

- Fortran: Still used a hard-coded "atof", also replaced by
  parse_float now.  Continues to always use builtin_real_s8
  as the type of literal, even though this is probably wrong.

- Go: This used to handle "f" and "l" suffixes, even though
  the Go language actually doesn't support those.  I kept this
  support for now -- maybe revisit later.  Note the the GDB
  test suite for some reason actually *verifies* that GDB supports
  those unsupported suffixes ...

- Pascal: Likewise -- this handles suffixes that are not
  supported in the language standard.

- Modula-2: Like Fortran, used to use "atof".

- Rust: Mostly straightforward, except for a unit-testing hitch.
  The code use to set a special "unit_testing" flag which would
  cause "rust_type" to always return NULL.  This makes it not
  possible to encode a literal into target format (which type?).
  The reason for this flag appears to have been that during
  unit testing, there is no "rust_parser" context set up, which
  means no "gdbarch" is available to use its types.  To fix this,
  I removed the unit_testing flag, and instead simply just set up
  a dummy rust_parser context during unit testing.

- Ada: This used to check sizeof (DOUBLEST) to determine which
  type to use for floating-point literal.  This seems questionable
  to begin with (since DOUBLEST is quite unrelated to target formats),
  and in any case we need to get rid of DOUBLEST.  I'm now simply
  always using the largest type (builtin_long_double).

gdb/ChangeLog:
2017-10-25  Ulrich Weigand  <uweigand@de.ibm.com>

	* doublest.c (floatformat_from_string): New function.
	* doublest.h (floatformat_from_string): Add prototype.

	* std-operator.def (OP_DOUBLE, OP_DECFLOAT): Remove, replace by ...
	(OP_FLOAT): ... this.
	* expression.h: Do not include "doublest.h".
	(union exp_element): Replace doubleconst and decfloatconst by
	new element floatconst.
	* ada-lang.c (resolve_subexp): Handle OP_FLOAT instead of OP_DOUBLE.
	(ada_evaluate_subexp): Likewise.
	* eval.c (evaluate_subexp_standard): Handle OP_FLOAT instead of
	OP_DOUBLE and OP_DECFLOAT.
	* expprint.c (print_subexp_standard): Likewise.
	(dump_subexp_body_standard): Likewise.
	* breakpoint.c (watchpoint_exp_is_const): Likewise.

	* parse.c: Include "dfp.h".
	(write_exp_elt_dblcst, write_exp_elt_decfloatcst): Remove.
	(write_exp_elt_floatcst): New function.
	(operator_length_standard): Handle OP_FLOAT instead of OP_DOUBLE
	and OP_DECFLOAT.
	(operator_check_standard): Likewise.
	(parse_float): Do not accept suffix.  Take type as input.  Return bool.
	Return target format buffer instead of host DOUBLEST.
	Use floatformat_from_string and decimal_from_string to parse
	either binary or decimal floating-point types.
	(parse_c_float): Remove.
	* parser-defs.h: Do not include "doublest.h".
	(write_exp_elt_dblcst, write_exp_elt_decfloatcst): Remove.
	(write_exp_elt_floatcst): Add prototype.
	(parse_float): Update prototype.
	(parse_c_float): Remove.

	* c-exp.y: Do not include "dfp.h".
	(typed_val_float): Use byte buffer instead of DOUBLEST.
	(typed_val_decfloat): Remove.
	(DECFLOAT): Remove.
	(FLOAT): Use OP_FLOAT and write_exp_elt_floatcst.
	(parse_number): Update to new parse_float interface.
	Parse suffixes and determine type before calling parse_float.
	Handle decimal and binary FP types the same way.

	* d-exp.y (typed_val_float): Use byte buffer instead of DOUBLEST.
	(FLOAT_LITERAL): Use OP_FLOAT and write_exp_elt_floatcst.
	(parse_number): Update to new parse_float interface.
	Parse suffixes and determine type before calling parse_float.

	* f-exp.y: Replace dval by typed_val_float.
	(FLOAT): Use OP_FLOAT and write_exp_elt_floatcst.
	(parse_number): Use parse_float instead of atof.

	* go-exp.y (typed_val_float): Use byte buffer instead of DOUBLEST.
	(parse_go_float): Remove.
	(FLOAT): Use OP_FLOAT and write_exp_elt_floatcst.
	(parse_number): Call parse_float instead of parse_go_float.
	Parse suffixes and determine type before calling parse_float.

	* p-exp.y (typed_val_float): Use byte buffer instead of DOUBLEST.
	(FLOAT): Use OP_FLOAT and write_exp_elt_floatcst.
	(parse_number): Update to new parse_float interface.
	Parse suffixes and determine type before calling parse_float.

	* m2-exp.y: Replace dval by byte buffer val.
	(FLOAT): Use OP_FLOAT and write_exp_elt_floatcst.
	(parse_number): Call parse_float instead of atof.

	* rust-exp.y (typed_val_float): Use byte buffer instead of DOUBLEST.
	(lex_number): Call parse_float instead of strtod.
	(ast_dliteral): Use OP_FLOAT instead of OP_DOUBLE.
	(convert_ast_to_expression): Handle OP_FLOAT instead of OP_DOUBLE.
	Use write_exp_elt_floatcst.
	(unit_testing): Remove static variable.
	(rust_type): Do not check unit_testing.
	(rust_lex_tests): Do not set uint_testing.  Set up dummy rust_parser.

	* ada-exp.y (type_float, type_double): Remove.
	(typed_val_float): Use byte buffer instead of DOUBLEST.
	(FLOAT): Use OP_FLOAT and write_exp_elt_floatcst.
	* ada-lex.l (processReal): Use parse_float instead of sscanf.
 2017-10-25 15:32:23 +02:00
Tom Tromey
981a3fb359 Constify add_prefix_cmd 
This changes add_prefix_cmd to accept a const-taking function as an
argument; then fixes up all the callers.

In a couple of spots I had to add a non-const overload of a function,
because the function is passed to two different command-adding
"constructors".  These overloads are temporary; once constification is
complete they can be removed.

This patch also fixes a typo I happened to notice while constifying.

Note that this touches a couple of files (gnu-nat.c and go32-nat.c)
that I can't build.  So, while I made a best-effort there, I am not
certain they will still compile.

Tested by rebuilding.

gdb/ChangeLog
2017-10-11  Tom Tromey  <tom@tromey.com>

	* gdbthread.h (thread_command): Constify.
	* inferior.h (detach_command): Constify.
	* top.h (set_history, show_history): Constify.
	* arm-tdep.c (set_arm_command, show_arm_command): Constify.
	* serial.c (serial_set_cmd, serial_show_cmd): Constify.
	* bsd-kvm.c (bsd_kvm_cmd): Constify.
	* printcmd.c (set_command): Constify.
	(non_const_set_command): New function.
	* dcache.c (set_dcache_command, show_dcache_command): Constify.
	* breakpoint.c (enable_command, disable_command, delete_command)
	(catch_command, tcatch_command, set_breakpoint_cmd)
	(show_breakpoint_cmd): Constify.
	* macrocmd.c (macro_command): Constify.
	* infcmd.c (unset_command, kill_command, detach_command)
	(info_proc_cmd): Constify.
	* i386-tdep.c (set_mpx_cmd, show_mpx_cmd): Constify.
	* auto-load.c (show_auto_load_cmd, set_auto_load_cmd)
	(info_auto_load_cmd): Constify.
	* target-descriptions.c (set_tdesc_cmd, show_tdesc_cmd)
	(unset_tdesc_cmd): Constify.
	* ada-lang.c (set_ada_command, show_ada_command)
	(maint_set_ada_cmd, maint_show_ada_cmd): Constify.
	* guile/guile.c (set_guile_command, show_guile_command)
	(info_guile_command): Constify.
	* tui/tui-win.c (tui_command, set_tui_cmd, show_tui_cmd):
	Constify.
	* skip.c (skip_command): Constify.
	* compile/compile.c (_initialize_compile): Constify.
	* dwarf2read.c (set_dwarf_cmd, show_dwarf_cmd): Constify.
	* btrace.c (maint_btrace_cmd, maint_btrace_set_cmd)
	(maint_btrace_show_cmd, maint_btrace_pt_set_cmd)
	(maint_btrace_pt_show_cmd): Constify.
	* remote.c (set_remote_cmd, show_remote_cmd, remote_command):
	Constify.
	* python/python.c (user_show_python, user_set_python): Constify.
	* mips-tdep.c (set_mips_command, show_mips_command)
	(set_mipsfpu_command): Constify.
	* record-btrace.c (cmd_record_btrace_start)
	(cmd_set_record_btrace, cmd_show_record_btrace)
	(cmd_set_record_btrace_bts, cmd_show_record_btrace_bts)
	(cmd_set_record_btrace_pt, cmd_show_record_btrace_pt): Constify.
	* rs6000-tdep.c (set_powerpc_command, show_powerpc_command):
	Constify.
	* symfile.c (overlay_command): Constify.
	* spu-tdep.c (set_spu_command, show_spu_command): Constify.
	* cli/cli-logging.c (set_logging_command, show_logging_command):
	Constify.
	* cli/cli-dump.c (dump_command, append_command)
	(srec_dump_command, ihex_dump_command, verilog_dump_command)
	(tekhex_dump_command, binary_dump_command)
	(binary_append_command): Constify.
	* cli/cli-decode.c (struct cmd_list_element): Change type of
	"fun".
	* cli/cli-cmds.c (info_command, show_command, set_debug)
	(show_debug): Constify.
	(show_command): Add non-const overload.
	* top.c (set_history, show_history): Constify.
	* sh-tdep.c (set_sh_command, show_sh_command): Constify.
	* command.h (add_prefix_cmd): Accept a cmd_const_cfunc_ftype.
	* target.c (target_command): Constify.
	* sparc64-tdep.c (info_adi_command): Constify.
	* record-full.c (cmd_record_full_start): Constify.
	(set_record_full_command): Constify.  Fix typo.
	(show_record_full_command): Constify.
	* thread.c (thread_command, thread_apply_command): Constify.
	* memattr.c (dummy_cmd): Constify.
	* value.c (function_command): Constify.
	* frame.c (set_backtrace_cmd, show_backtrace_cmd): Constify.
	* probe.c (info_probes_command): Constify.
	* ser-tcp.c (set_tcp_cmd, show_tcp_cmd): Constify.
	* gnu-nat.c (set_task_cmd, show_task_cmd, set_thread_cmd)
	(show_thread_cmd, set_thread_default_cmd)
	(show_thread_default_cmd): Constify.
	(check_empty): Constify.
	* tracepoint.c (tfind_command): Constify.
	* cp-support.c (maint_cplus_command): Constify.
	* windows-tdep.c (info_w32_command): Constify.
	* record.c (cmd_record_start, set_record_command)
	(show_record_command, info_record_command, cmd_record_goto):
	Constify.
	* ravenscar-thread.c (set_ravenscar_command)
	(show_ravenscar_command): Constify.
	* utils.c (set_internal_problem_cmd, show_internal_problem_cmd):
	Constify.
	(add_internal_problem_command): Remove casts.
	* arc-tdep.c (maintenance_print_arc_command): Constify.
	* valprint.c (set_print, show_print, set_print_raw)
	(show_print_raw): Constify.
	* maint.c (maintenance_command, maintenance_info_command)
	(maintenance_print_command, maintenance_set_cmd)
	(maintenance_show_cmd, set_per_command_cmd)
	(show_per_command_cmd, maintenance_check_command): Constify.
	* language.c (set_check, show_check): Constify.
	* typeprint.c (show_print_type, set_print_type): Constify.
	* go32-nat.c (go32_info_dos_command): Constify.
 2017-10-11 16:21:02 -06:00
Tom Tromey
fdf44873ec Remove prepare_re_set_context 
prepare_re_set_context returns a null cleanup and doesn't seem
generally useful.  This patch removes it plus a few more cleanups; and
changes breakpoint_re_set to use scoped_restore rather than its own
manual mechanism.

2017-10-11  Tom Tromey  <tom@tromey.com>

	* breakpoint.c (prepare_re_set_context): Remove.
	(breakpoint_re_set_one): Update.  Don't use cleanups.
	(breakpoint_re_set): Use scoped_restore, std::string, and
	scoped_restore_current_language.
 2017-10-11 15:46:31 -06:00
Tom Tromey
81b1e71c4a Remove some cleanups from breakpoint.c 
This removes some cleanups from breakpoint.c, replacing them with C++
data structures.

2017-10-11  Tom Tromey  <tom@tromey.com>

	* breakpoint.c (commands_command_1): Use std::string.
	(cleanup_executing_breakpoints): Remove.
	(bpstat_do_actions_1): Use scoped_restore.
	(bpstat_check_watchpoint): Use std::string.
	(decode_static_tracepoint_spec): Likewise.
	(break_range_command): Likewise.
	(watch_command_1): Likewise.
	(compare_breakpoints): Change argument types.
	(clear_command): Use std::vector.
	(cleanup_executing_breakpoints): Remove.
	(update_global_location_list): Use unique_xmalloc_ptr.
	(strace_command): Remove unused declaration.
 2017-10-11 15:46:31 -06:00
Pedro Alves
458ca1d02e Garbage collect reattach_breakpoints 
Not used anywhere.

gdb/ChangeLog:
2017-10-11  Pedro Alves  <palves@redhat.com>

	* breakpoint.c (reattach_breakpoints): Delete.
	* breakpoint.h (reattach_breakpoints): Delete.
 2017-10-11 14:45:17 +01:00
Pedro Alves
65630365f7 Eliminate catch_exceptions/catch_exceptions_with_msg 
This patch gets rid of catch_exceptions / catch_exceptions_with_msg.
The latter is done mostly by getting rid of the three remaining
vestigial libgdb wrapper functions, which are really pointless
nowadays.  This results in a good number of simplifications.

(I checked that Insight doesn't use those functions.)

The gdb.mi/mi-pthreads.exp change is necessary because this actually
fixes a bug, IMO -- the patch stops MI's -thread-select causing output
on the CLI stream.

I.e., before:
 -thread-select 123456789
 &"Thread ID 123456789 not known.\n"
 ^error,msg="Thread ID 123456789 not known."
 (gdb)

After:
 -thread-select 123456789
 ^error,msg="Thread ID 123456789 not known."
 (gdb)

gdb/ChangeLog
2017-10-10  Pedro Alves <palves@redhat.com>
	    Tom Tromey  <tom@tromey.com>

	* breakpoint.c (struct captured_breakpoint_query_args)
	(do_captured_breakpoint_query, gdb_breakpoint_query): Delete.
	(print_breakpoint): New.
	* breakpoint.h (print_breakpoint): Declare.
	* common/common-exceptions.h (enum return_reason): Remove
	references to catch_exceptions.
	* exceptions.c (catch_exceptions, catch_exceptions_with_msg):
	Delete.
	* exceptions.h (catch_exceptions_ftype, catch_exceptions)
	(catch_exception_ftype, catch_exceptions_with_msg): Delete.
	* gdb.h: Delete.
	* gdbthread.h (thread_select): Declare.
	* mi/mi-cmd-break.c: Don't include gdb.h.
	(breakpoint_notify): Use print_breakpoint.
	* mi/mi-cmd-catch.c: Don't include gdb.h.
	* mi/mi-interp.c: Don't include gdb.h.
	(mi_print_breakpoint_for_event): New.
	(mi_breakpoint_created, mi_breakpoint_modified): Use
	mi_print_breakpoint_for_event.
	* mi/mi-main.c: Don't include gdb.h.
	(mi_cmd_thread_select): Parse the global thread ID here.  Use
	thread_select instead of gdb_thread_select.
	(mi_cmd_thread_list_ids): Output "thread-ids" tuple here instead
	of using gdb_list_thread_ids.
	* remote-fileio.c (do_remote_fileio_request): Change type.  Reply
	FILEIO_ENOSYS here.
	(remote_fileio_request): Use TRY/CATCH instead of
	catch_exceptions.
	* symfile-mem.c (struct symbol_file_add_from_memory_args)
	(symbol_file_add_from_memory_wrapper): Delete.
	(add_vsyscall_page): Use TRY/CATCH instead of catch_exceptions.
	* thread.c: Don't include gdb.h.
	(do_captured_list_thread_ids, gdb_list_thread_ids): Delete.
	(thread_alive): Use thread_select.
	(do_captured_thread_select): Delete, parts salvaged as ...
	(thread_select): ... this new function.
	(gdb_thread_select): Delete.

gdb/testsuite/ChangeLog
2017-10-10  Pedro Alves <palves@redhat.com>

	* gdb.mi/mi-pthreads.exp (check_mi_thread_command_set): Don't
	expect CLI output.
 2017-10-10 17:01:25 +01:00
Pedro Alves
bf46927112 Eliminate catch_errors 
If you want to use catch_errors with a function with parameters, then
currently you have to manually write a "capture" struct wrapping the
arguments and marshall/unmarshall that.

https://sourceware.org/ml/gdb-patches/2017-09/msg00834.html proposed
adjusting catch_errors to use gdb::function_view, which would allow
passing lambdas with automatic captures.  However, it seems like using
TRY/CATCH directly instead ends up producing clearer and easier to
debug code.  This is what this commit does.

Note that removing catch_errors exposes further cleanup opportunities
around no longer having to follow catch_errors callback type, and also
removes a few cleanups.

I didn't do anything to save/restore current_uiout because I think
that should be the responsibility of the code that changes
current_uiout in the first place.

(Another approach could be to make catch_errors a variadic template
like:

  template<typename Function, typename... Args>
  int catch_errors (const char *errstring, return_mask mask,
		    Function &&func, Args... args);

and then with:

  extern void function_with_args (int, int);
  extern void function_with_no_args ();

calls to the above functions would be wrapped like this:

  catch_errors ("some error happened", RETURN_MASK_ERROR,
                function_with_args, arg1, arg2);

  catch_errors ("some error happened", RETURN_MASK_ERROR,
                function_with_no_args);

but I'm thinking that that doesn't improve much if at all either.)

gdb/ChangeLog
2017-10-10  Pedro Alves  <palves@redhat.com>
	    Tom Tromey  <tom@tromey.com>

	* breakpoint.c (breakpoint_cond_eval): Change return type to bool
	and reverse logic.
	(WP_DELETED, WP_VALUE_CHANGED, WP_VALUE_NOT_CHANGED, WP_IGNORE):
	No longer macros.  Instead ...
	(enum wp_check_result): They're now values of this new
	enumeration.
	(watchpoint_check): Change return type to wp_check_result and
	parameter type to bpstat.
	(bpstat_check_watchpoint): Use TRY/CATCH instead of catch_errors.
	(bpstat_check_breakpoint_conditions): Use TRY/CATCH instead of
	catch_errors.  Reverse logic of watchpoint_check call.
	(breakpoint_re_set_one): Now returns void and takes a breakpoint
	pointer as parameter.
	(breakpoint_re_set): Use TRY/CATCH instead of catch_errors.
	* common/common-exceptions.c (throw_exception_sjlj): Update
	comments to avoid mentioning catch_errors.
	* exceptions.c (catch_errors): Delete.
	* exceptions.h: Update comments to avoid mentioning catch_errors.
	(catch_errors_ftype, catch_errors): Delete.
	* infrun.c (normal_stop): Use TRY/CATCH instead of catch_errors.
	(hook_stop_stub): Delete.
	(restore_selected_frame): Change return type to void, and
	parameter type to const frame_id &.
	(restore_infcall_control_state): Use TRY/CATCH instead of
	catch_errors.
	* main.c (captured_command_loop): Return void and remove
	parameter.  Remove references to catch_errors.
	(captured_main): Use TRY/CATCH instead of catch_errors.
	* objc-lang.c (objc_submethod_helper_data)
	(find_objc_msgcall_submethod_helper): Delete.
	(find_objc_msgcall_submethod): Use TRY/CATCH instead of
	catch_errors.
	* record-full.c (record_full_message): Return void.
	(record_full_message_args, record_full_message_wrapper): Delete.
	(record_full_message_wrapper_safe): Return bool and use TRY/CATCH
	instead of catch_errors.
	* solib-aix.c (solib_aix_open_symbol_file_object): Change
	parameter type to int.
	* solib-darwin.c (open_symbol_file_object): Ditto.
	* solib-dsbt.c (open_symbol_file_object): Ditto.
	* solib-frv.c (open_symbol_file_object): Ditto.
	* solib-svr4.c (open_symbol_file_object): Ditto.
	* solib-target.c (solib_target_open_symbol_file_object): Ditto.
	* solib.c (update_solib_list): Use TRY/CATCH instead of
	catch_errors.
	* solist.h (struct target_so_ops) <open_symbol_file_object>:
	Change type.
	* symmisc.c (struct print_symbol_args): Remove.
	(dump_symtab_1): Use TRY/CATCH instead of catch_errors.
	(print_symbol): Change type.
	* windows-nat.c (handle_load_dll, handle_unload_dll): Return void
	and remove parameters.
	(catch_errors): New.
	(get_windows_debug_event): Adjust.

gdb/testsuite/ChangeLog:
2017-10-10  Pedro Alves  <palves@redhat.com>

	* lib/selftest-support.exp (selftest_setup): Update for
	captured_command_loop's prototype change.
 2017-10-10 16:45:50 +01:00
Tom Tromey
4495129abd Constify some commands in breakpoint.c 
This also makes delete_command static; but now I wonder if it is used
in Insight and should not be touched.

gdb/ChangeLog
2017-09-27  Tom Tromey  <tom@tromey.com>

	* breakpoint.h (delete_command): Don't declare.
	* breakpoint.c (delete_command, enable_once_command)
	(enable_count_command, enable_delete_command, breakpoint_1)
	(maintenance_info_breakpoints, stopin_command, stopat_command)
	(delete_command, delete_trace_command, save_breakpoints)
	(save_breakpoints_command, save_tracepoints_command): Constify.
 2017-09-27 08:45:05 -06:00
Tom Tromey
f2fc30156c Constify some linespec functions 
This changes a few linespec functions to work on "const char *" and
then fixes up all the callers.  This allows further constification
elsewhere.

gdb/ChangeLog
2017-09-27  Tom Tromey  <tom@tromey.com>

	* tracepoint.c (info_scope_command): Constify.
	* python/python.c (gdbpy_decode_line): Constify.
	* python/py-breakpoint.c (bppy_init): Constify.
	* mi/mi-cmd-break.c (mi_cmd_break_insert_1): Constify.
	* location.h: (new_linespec_location)
	(string_to_event_location_basic, string_to_event_location):
	Constify.
	* location.c (new_linespec_location)
	(string_to_event_location_basic, string_to_event_location):
	Constify.
	* linespec.h (decode_line_with_current_source)
	(decode_line_with_last_displayed, linespec_lex_to_end): Constify.
	* linespec.c (linespec_lex_to_end)
	(decode_line_with_current_source)
	(decode_line_with_last_displayed): Constify.
	* guile/scm-breakpoint.c (gdbscm_register_breakpoint_x):
	Constify.
	* cli/cli-cmds.c (edit_command, list_command): Constify.
	* breakpoint.h (until_break_command, watch_command_wrapper)
	(awatch_command_wrapper, rwatch_command_wrapper)
	(init_ada_exception_breakpoint): Constify.
	* breakpoint.c (break_command_1, dprintf_command)
	(break_range_command, watch_command_wrapper)
	(rwatch_command_wrapper, awatch_command_wrapper)
	(until_break_command, init_ada_exception_breakpoint)
	(strace_marker_create_sals_from_location, trace_command)
	(ftrace_command, strace_command, struct tracepoint): Constify.
	* ax-gdb.c (agent_command_1): Constify.
	* ada-lang.c (ada_exception_sal): Constify.
 2017-09-27 08:44:45 -06:00
Tom Tromey
0450cc4ce8 Add add_cmd function overloads 
This adds two add_cmd overloads: one whose callback takes a const char *,
and one that doesn't accept a function at all.  The no-function overload
was introduced to avoid ambiguity when NULL was passed as the function.

Long term the goal is for all commands to take const arguments, and
for the non-const variants to be removed entirely.

gdb/ChangeLog
2017-09-27  Tom Tromey  <tom@tromey.com>

	* cli/cli-decode.c (add_cmd, set_cmd_cfunc): New function
	overloads.
	(do_add_cmd): Rename from add_cmd.  Don't call set_cmd_cfunc.
	(do_const_cfunc): New function.
	(cmd_cfunc_eq): New overload.
	(cli_user_command_p): Check do_const_cfunc.
	* cli/cli-decode.h (struct cmd_list_element) <function>: New field
	const_cfunc.
	* command.h (add_cmd): Add const overload and no-function
	overload.
	(set_cmd_cfunc): Add const overload.
	(cmd_const_cfunc_ftype): Declare.
	(cmd_cfunc_eq): Add const overload.
	* breakpoint.c, cli-cmds.c, cli-dump.c, guile/scm-cmd.c,
	python/py-cmd.c, target.c, tracepoint.c: Use no-function add_cmd
	overload.
 2017-09-27 08:44:14 -06:00
Tom Tromey
d1b0a7bfd3 Change counted_command_line to a shared_ptr 
This changes counted_command_line to be a typedef for std::shared_ptr
and removes the associated cleanups.  In the long run I believe that
cmd_list_element should also be changed to use a shared_ptr.

gdb/ChangeLog
2017-09-20  Tom Tromey  <tom@tromey.com>

	* breakpoint.c (struct counted_command_line): Remove.
	(breakpoint_commands): Update.
	(alloc_counted_command_line, incref_counted_command_line)
	(decref_counted_command_line, do_cleanup_counted_command_line)
	(make_cleanup_decref_counted_command_line): Remove.
	(breakpoint_set_commands, commands_command_1, ~bpstats, bpstats)
	(bpstat_clear_actions, bpstat_do_actions_1, watchpoint_check)
	(bpstat_stop_status, print_one_breakpoint_location, ~breakpoint)
	(save_breakpoints): Update.
	* breakpoint.h (counted_command_line): Now a typedef to
	shared_ptr.
	(struct breakpoint) <commands>: Now a counted_command_line.
	(struct bpstats) <command>: Likewise.
 2017-09-20 22:05:16 -06:00
Tom Tromey
48649e1bfe Use function_view in a couple of places in breakpoint.c 
This changes iterate_over_related_breakpoints and
map_breakpoint_numbers to take a function_view.  Then, it simplifies
the callers by using lambdas.  This then allows the removal of some
bookkeeping types.

gdb/ChangeLog
2017-09-20  Tom Tromey  <tom@tromey.com>

	* breakpoint.c (struct commands_info, do_map_commands_command):
	Remove.
	(commands_command_1): Update.
	(iterate_over_related_breakpoints): Take a function_view.
	(do_delete_breakpoint, do_map_delete_breakpoint): Remove.
	(delete_command): Update.
	(map_breakpoint_numbers): Take a function_view.
	(do_disable_breakpoint, do_map_delete_breakpoint): Remove.
	(disable_command): Update.
	(do_enable_breakpoint, do_map_enable_breakpoint): Remove.
	(enable_command): Update.
	(struct disp_data, do_enable_breakpoint_disp)
	(do_map_enable_once_breakpoint, do_map_enable_count_breakpoint)
	(do_map_enable_delete_breakpoint): Remove.
	(enable_once_command, enable_count_command, enable_delete_command)
	(delete_trace_variable_command): Update.
 2017-09-20 22:05:15 -06:00
Tom Tromey
04afa70c8e Allocate bpstats with new 
This changes struct bpstats to be allocated with new and freed with
delete, adding constructors and a destructor in the process.  This
allows the removal of one cleanup and clears the way for more to
follow.

gdb/ChangeLog
2017-09-20  Tom Tromey  <tom@tromey.com>

	* breakpoint.c (~bpstats): Rename from bpstat_free.  Update.
	(bpstat_clear): Use delete.
	(bpstats): New constructors.
	(bpstat_copy, bpstat_stop_status): Use new.
	(dprintf_after_condition_true): Update.
	* breakpoint.h (bpstats::bpstats): Add constructors.
	(bpstats::~bpstats): Add destructor.
 2017-09-20 22:05:14 -06:00
Tom Tromey
223ffa714c Remove make_cleanup_restore_target_terminal 
This removes make_cleanup_restore_target_terminal and generally
C++-ifies target terminal handling.  It changes all target_terminal_*
functions to be static members of a new target_terminal class and
changes the cleanup to be a scoped_* class.
make_cleanup_override_quit_handler is also removed in favor of simply
using scoped_restore.

Note that there are some files in this patch that I could not compile.
Considering that some of the rewrites were automated, and that none of
these files involed cleanups, I feel that this is relatively safe.

Regression tested by the buildbot.

gdb/ChangeLog
2017-09-20  Tom Tromey  <tom@tromey.com>

	* windows-nat.c (get_windows_debug_event, windows_wait)
	(do_initial_windows_stuff, windows_attach): Update.
	* utils.c (vwarning, internal_vproblem): Update.
	(ui_unregister_input_event_handler_cleanup)
	(prepare_to_handle_input): Remove.
	(class scoped_input_handler): New.
	(defaulted_query, prompt_for_continue): Update.
	* tui/tui-hooks.c (tui_refresh_frame_and_register_information):
	Update.
	* top.c (undo_terminal_modifications_before_exit): Update.
	* target/target.h (target_terminal_init, target_terminal_inferior)
	(target_terminal_ours): Don't declare.
	(class target_terminal): New.
	* target.h (target_terminal_is_inferior, target_terminal_is_ours)
	(target_terminal_ours_for_output)
	(make_cleanup_restore_target_terminal): Don't declare.
	(target_terminal_info): Remove.
	* target.c (enum terminal_state, terminal_state): Remove.
	(target_terminal::terminal_state): Define.
	(target_terminal::init): Rename from target_terminal_init.
	(target_terminal::inferior): Rename from
	target_terminal_inferior.
	(target_terminal::ours): Rename from target_terminal_ours.
	(target_terminal::ours_for_output): Rename from
	target_terminal_ours_for_output.
	(target_terminal::info): New method.
	(cleanup_restore_target_terminal)
	(make_cleanup_restore_target_terminal): Remove.
	* solib.c (handle_solib_event): Update.
	* remote.c (remote_serial_quit_handler): Update.
	(remote_terminal_inferior, remote_wait_as): Update.
	* record-full.c (record_full_wait_1): Update.
	* nto-procfs.c (procfs_create_inferior): Update.
	* nat/fork-inferior.c (startup_inferior): Update.
	* mi/mi-interp.c (mi_new_thread, mi_thread_exit)
	(mi_record_changed, mi_inferior_added, mi_inferior_appeared)
	(mi_inferior_exit, mi_inferior_removed, mi_traceframe_changed)
	(mi_tsv_created, mi_tsv_deleted, mi_tsv_modified)
	(mi_breakpoint_created, mi_breakpoint_deleted)
	(mi_breakpoint_modified, mi_on_resume, mi_solib_loaded)
	(mi_solib_unloaded, mi_command_param_changed, mi_memory_changed)
	(mi_user_selected_context_changed, report_initial_inferior):
	Update.
	* linux-nat.c (linux_nat_attach, linux_nat_terminal_ours)
	(linux_nat_terminal_inferior): Update.
	* infrun.c (follow_fork_inferior)
	(handle_vfork_child_exec_or_exit, do_target_resume)
	(check_curr_ui_sync_execution_done, handle_inferior_event_1)
	(handle_signal_stop, maybe_remove_breakpoints, normal_stop):
	Update.
	* inflow.c (child_terminal_init, info_terminal_command): Update.
	* infcmd.c (post_create_inferior, continue_1, prepare_one_step)
	(attach_command): Update.
	* infcall.c (call_thread_fsm_should_stop): Update.
	* gnu-nat.c (gnu_attach): Update.
	* extension.c (struct active_ext_lang_state)
	(restore_active_ext_lang): Update.
	* exceptions.c (print_flush): Update.
	* event-top.c (async_enable_stdin, default_quit_handler): Update.
	(struct quit_handler_cleanup_data, restore_quit_handler)
	(restore_quit_handler_dtor, make_cleanup_override_quit_handler):
	Remove.
	* cp-support.c (gdb_demangle): Update.
	* breakpoint.c (update_inserted_breakpoint_locations)
	(insert_breakpoint_locations, handle_jit_event)
	(disable_breakpoints_in_unloaded_shlib): Update.
	* annotate.c (annotate_breakpoints_invalid)
	(annotate_frames_invalid): Update.

gdb/gdbserver/ChangeLog
2017-09-20  Tom Tromey  <tom@tromey.com>

	* target.c (target_terminal::terminal_state): Define.
	(target_terminal::init): Rename from target_terminal_init.
	(target_terminal::inferior): Rename from
	target_terminal_inferior.
	(target_terminal::ours): Rename from target_terminal_ours.
	(target_terminal::ours_for_output, target_terminal::info): New.
 2017-09-20 16:09:50 -06:00