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This patch essentially causes GDB to treat inlined frames like "normal"
frames from the user's perspective. This means, for example, that when a
user sets a breakpoint in an inlined function, GDB will now actually stop
"in" that function.
Using the test case from breakpoints/17534,
3 static inline void NVIC_EnableIRQ(int IRQn)
4 {
5 volatile int y;
6 y = IRQn;
7 }
8
9 __attribute__( ( always_inline ) ) static inline void __WFI(void)
10 {
11 __asm volatile ("nop");
12 }
13
14 int main(void) {
15
16 x= 42;
17
18 if (x)
19 NVIC_EnableIRQ(16);
20 else
21 NVIC_EnableIRQ(18);
(gdb) b NVIC_EnableIRQ
Breakpoint 1 at 0x4003e4: NVIC_EnableIRQ. (2 locations)
(gdb) r
Starting program: 17534
Breakpoint 1, main () at 17534.c:19
19 NVIC_EnableIRQ(16);
Because skip_inline_frames currently skips every inlined frame, GDB "stops"
in the caller. This patch adds a new parameter to skip_inline_frames
that allows us to pass in a bpstat stop chain. The breakpoint locations
on the stop chain can be used to determine if we've stopped inside an inline
function (due to a user breakpoint). If we have, we do not elide the frame.
With this patch, GDB now reports that the inferior has stopped inside the
inlined function:
(gdb) r
Starting program: 17534
Breakpoint 1, NVIC_EnableIRQ (IRQn=16) at 17534.c:6
6 y = IRQn;
Many thanks to Jan and Pedro for guidance on this.
gdb/ChangeLog:
* breakpoint.c (build_bpstat_chain): New function, moved from
bpstat_stop_status.
(bpstat_stop_status): Add optional parameter, `stop_chain'.
If no stop chain is passed, call build_bpstat_chain to build it.
* breakpoint.h (build_bpstat_chain): Declare.
(bpstat_stop_status): Move documentation here from breakpoint.c.
* infrun.c (handle_signal_stop): Before eliding inlined frames,
build the stop chain and pass it to skip_inline_frames.
Pass this stop chain to bpstat_stop_status.
* inline-frame.c: Include breakpoint.h.
(stopped_by_user_bp_inline_frame): New function.
(skip_inline_frames): Add parameter `stop_chain'.
Move documention to inline-frame.h.
If non-NULL, use stopped_by_user_bp_inline_frame to determine
whether the frame should be elided.
* inline-frame.h (skip_inline_frames): Add parameter `stop_chain'.
Add moved documentation and update for new parameter.
gdb/testsuite/ChangeLog:
* gdb.ada/bp_inlined_func.exp: Update inlined frame locations
in expected breakpoint stop locations.
* gdb.dwarf2/implptr.exp (implptr_test_baz): Use up/down to
move to proper scope to test variable values.
* gdb.opt/inline-break.c (inline_func1, not_inline_func1)
(inline_func2, not_inline_func2, inline_func3, not_inline_func3):
New functions.
(main): Call not_inline_func3.
* gdb.opt/inline-break.exp: Start inferior and set breakpoints at
inline_func1, inline_func2, and inline_func3. Test that when each
breakpoint is hit, GDB properly reports both the stop location
and the backtrace. Repeat tests for temporary breakpoints.
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This changes some functions in cli-script.c to use function_view
rather than a function pointer and closure argument. This simplifies
the code a bit and is useful in a subsequent patch.
ChangeLog
2018-05-04 Tom Tromey <tom@tromey.com>
* tracepoint.c (actions_command): Update.
* mi/mi-cmd-break.c (mi_command_line_array)
(mi_command_line_array_cnt, mi_command_line_array_ptr)
(mi_read_next_line): Remove.
(mi_cmd_break_commands): Update.
* cli/cli-script.h (read_command_lines, read_command_lines_1): Use
function_view.
* cli/cli-script.c (get_command_line): Update.
(process_next_line): Use function_view. Constify.
(recurse_read_control_structure, read_command_lines)
(read_command_lines_1): Change argument types to function_view.
(do_define_command, document_command): Update.
* breakpoint.h (check_tracepoint_command): Don't declare.
* breakpoint.c (check_tracepoint_command): Remove.
(commands_command_1, create_tracepoint_from_upload): Update.
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Currently command lines are reference counted using shared_ptr only
when attached to breakpoints. This patch changes gdb to use
shared_ptr in commands as well. This allows for the removal of
copy_command_lines.
Note that the change to execute_user_command explicitly makes a new
reference to the command line. This will be used in a later patch.
This simplifies struct command_line based on the observation that a
given command can have at most two child bodies: an "if" can have both
"then" and "else" parts. Perhaps the names I've chosen for the
replacements here are not very good -- your input requested.
ChangeLog
2018-05-04 Tom Tromey <tom@tromey.com>
* tracepoint.c (all_tracepoint_actions): Rename from
all_tracepoint_actions_and_cleanup. Change return type.
(actions_command, encode_actions_1, encode_actions)
(trace_dump_actions, tdump_command): Update.
* remote.c (remote_download_command_source): Update.
* python/python.c (gdbpy_eval_from_control_command)
(python_command, python_interactive_command): Update.
* mi/mi-cmd-break.c (mi_cmd_break_commands): Update.
* guile/guile.c (guile_command)
(gdbscm_eval_from_control_command, guile_command): Update.
* compile/compile.c (compile_code_command)
(compile_print_command, compile_to_object): Update.
* cli/cli-script.h (struct command_lines_deleter): New.
(counted_command_line): New typedef.
(struct command_line): Add constructor, destructor.
<body_list>: Remove.
<body_list_0, body_list_1>: New members.
(command_line_up): Remove typedef.
(read_command_lines, read_command_lines_1, get_command_line):
Update.
(copy_command_lines): Don't declare.
* cli/cli-script.c (build_command_line): Use "new".
(get_command_line): Return counted_command_line.
(print_command_lines, execute_user_command)
(execute_control_command_1, while_command, if_command): Update.
(realloc_body_list): Remove.
(process_next_line, recurse_read_control_structure): Update.
(read_command_lines, read_command_lines_1): Return counted_command_line.
(free_command_lines): Use "delete".
(copy_command_lines): Remove.
(define_command, document_command, show_user_1): Update.
* cli/cli-decode.h (struct cmd_list_element) <user_commands>: Now
a counted_command_line.
* breakpoint.h (counted_command_line): Remove typedef.
(breakpoint_set_commands): Update.
* breakpoint.c (check_no_tracepoint_commands)
(validate_commands_for_breakpoint): Update.
(breakpoint_set_commands): Change commands to be a
counted_command_line.
(commands_command_1, update_dprintf_command_list)
(create_tracepoint_from_upload): Update.
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This fixes setting breakpoints on ifunc functions by name after the
ifunc has already been resolved.
In that case, if you have debug info for the ifunc resolver, without
the fix, then gdb puts a breakpoint past the prologue of the resolver,
instead of setting a breakpoint at the ifunc target:
break gnu_ifunc
Breakpoint 4 at 0x7ffff7bd36f2: file src/gdb/testsuite/gdb.base/gnu-ifunc-lib.c, line 34.
(gdb) continue
Continuing.
[Inferior 1 (process 13300) exited normally]
(gdb)
above we should have stopped at "final", but didn't because we never
resolved the ifunc to the final location.
If you don't have debug info for the resolver, GDB manages to resolve
the ifunc target, but, it should be setting a breakpoint after the
prologue of the final function, and instead what you get is that GDB
sets a breakpoint on the first address of the target function. With
the gnu-ifunc.exp tests added by a later patch, we get, without the
fix:
(gdb) break gnu_ifunc
Breakpoint 4 at 0x400753
(gdb) continue
Continuing.
Breakpoint 4, final (arg=1) at src/gdb/testsuite/gdb.base/gnu-ifunc-final.c:20
20 {
vs, fixed:
(gdb) break gnu_ifunc
Breakpoint 4 at 0x40075a: file src/gdb/testsuite/gdb.base/gnu-ifunc-final.c, line 21.
(gdb) continue
Continuing.
Breakpoint 4, final (arg=2) at src/gdb/testsuite/gdb.base/gnu-ifunc-final.c:21
21 return arg + 1;
(gdb)
Fix the problems above by moving the ifunc target resolving to
linespec.c, before we skip a function's prologue. We need to save
something in the sal, so that set_breakpoint_location_function knows
that it needs to create a bp_gnu_ifunc_resolver bp_location. Might as
well just save a pointer to the minsym.
gdb/ChangeLog:
2018-04-26 Pedro Alves <palves@redhat.com>
* breakpoint.c (set_breakpoint_location_function): Don't resolve
ifunc targets here. Instead, if we have an ifunc minsym, use its
address/name.
(add_location_to_breakpoint): Store the minsym and the objfile in
the breakpoint location.
* breakpoint.h (bp_location) <msymbol, objfile>: New fields.
* linespec.c (minsym_found): Resolve GNU ifunc targets here.
Record the minsym in the sal.
* symtab.h (symtab_and_line) <msymbol>: New field.
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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.
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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.
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gdb/ChangeLog:
Update copyright year range in all GDB files
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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.
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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.
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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
|
|
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.
|
|
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.
|
|
There is no regular_breakpoint_inserted_here_p definition at all, so
this patch removes the declaration.
gdb:
2017-10-26 Yao Qi <yao.qi@linaro.org>
* breakpoint.h (regular_breakpoint_inserted_here_p): Remove.
|
|
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.
|
|
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.
|
|
Not used anywhere.
gdb/ChangeLog:
2017-10-11 Pedro Alves <palves@redhat.com>
* breakpoint.c (reattach_breakpoints): Delete.
* breakpoint.h (reattach_breakpoints): Delete.
|
|
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.
|
|
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.
|
|
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.
|
|
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.
|
|
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.
|
|
I think it would make more sense if the types and function declarations
related to command lines were in cli-script.h rather than defs.h, since
the related function definitions are in cli-script.c.
I had to add a few includes here and there. I also had to rename the
"lines" parameter of command_lines_deleter::operator(), because ncurses
has a "#define lines ..." that was interfering when cli-script.h is
included by some TUI source files that also include ncurses header files.
gdb/ChangeLog:
* cli/cli-script.h (enum misc_command_type): Move from defs.h.
(enum command_control_type): Likewise.
(struct command_line): Likewise.
(free_command_lines): Likewise.
(struct command_lines_deleter): Likewise.
(command_line_up): Likewise.
(read_command_lines): Likewise.
(read_command_lines_1): Likewise.
* defs.h (enum misc_command_type): Move to cli/cli-script.h.
(enum command_control_type): Likewise.
(struct command_line): Likewise.
(free_command_lines): Likewise.
(struct command_lines_deleter): Likewise.
(command_line_up): Likewise.
(read_command_lines): Likewise.
(read_command_lines_1): Likewise.
* breakpoint.h: Include cli/cli-script.h.
* extension-priv.h: Likewise.
* gdbcmd.h: Likewise.
|
|
This replaces "struct symtabs_and_lines" with
std::vector<symtab_and_line> in most cases. This removes a number of
cleanups.
In some cases, the sals objects do not own the sals they point at.
Instead they point at some sal that lives on the stack. Typically
something like this:
struct symtab_and_line sal;
struct symtabs_and_lines sals;
// fill in sal
sals.nelts = 1;
sals.sals = &sal;
// use sals
Instead of switching those cases to std::vector too, such usages are
replaced by gdb::array_view<symtab_and_line> instead. This avoids
introducing heap allocations.
gdb/ChangeLog:
2017-09-04 Pedro Alves <palves@redhat.com>
* ax-gdb.c (agent_command_1): Use range-for.
* break-catch-throw.c (re_set_exception_catchpoint): Update.
* breakpoint.c: Include "common/array-view.h".
(init_breakpoint_sal, create_breakpoint_sal): Change sals
parameter from struct symtabs_and_lines to
array_view<symtab_and_line>. Adjust. Use range-for. Update.
(breakpoint_sals_to_pc): Change sals parameter from struct
symtabs_and_lines to std::vector reference.
(check_fast_tracepoint_sals): Change sals parameter from struct
symtabs_and_lines to std::array_view. Use range-for.
(decode_static_tracepoint_spec): Return a std::vector instead of
symtabs_and_lines. Update.
(create_breakpoint): Update.
(break_range_command, until_break_command, clear_command): Update.
(base_breakpoint_decode_location, bkpt_decode_location)
(bkpt_probe_create_sals_from_location)
(bkpt_probe_decode_location, tracepoint_decode_location)
(tracepoint_probe_decode_location)
(strace_marker_create_sals_from_location): Return a std::vector
instead of symtabs_and_lines.
(strace_marker_create_breakpoints_sal): Update.
(strace_marker_decode_location): Return a std::vector instead of
symtabs_and_lines. Update.
(update_breakpoint_locations): Change struct symtabs_and_lines
parameters to gdb::array_view. Adjust.
(location_to_sals): Return a std::vector instead of
symtabs_and_lines. Update.
(breakpoint_re_set_default): Use std::vector instead of struct
symtabs_and_lines.
(decode_location_default): Return a std::vector instead of
symtabs_and_lines. Update.
* breakpoint.h: Include "common/array-view.h".
(struct breakpoint_ops) <decode_location>: Now returns a
std::vector instead of returning a symtabs_and_lines via output
parameter.
(update_breakpoint_locations): Change sals parameters to use
gdb::array_view.
* cli/cli-cmds.c (edit_command, list_command): Update to use
std::vector and gdb::array_view.
(ambiguous_line_spec): Adjust to use gdb::array_view and
range-for.
(compare_symtabs): Rename to ...
(cmp_symtabs): ... this. Change parameters to symtab_and_line
const reference and adjust.
(filter_sals): Rewrite using std::vector and standard algorithms.
* elfread.c (elf_gnu_ifunc_resolver_return_stop): Simplify.
(jump_command): Update to use std::vector.
* linespec.c (struct linespec_state) <canonical_names>: Update
comment.
(add_sal_to_sals_basic): Delete.
(add_sal_to_sals, filter_results, convert_results_to_lsals)
(decode_line_2, create_sals_line_offset)
(convert_address_location_to_sals, convert_linespec_to_sals)
(convert_explicit_location_to_sals, parse_linespec)
(event_location_to_sals, decode_line_full, decode_line_1)
(decode_line_with_current_source)
(decode_line_with_last_displayed, decode_objc)
(decode_digits_list_mode, decode_digits_ordinary, minsym_found)
(linespec_result::~linespec_result): Adjust to use std::vector
instead of symtabs_and_lines.
* linespec.h (linespec_sals::sals): Now a std::vector.
(struct linespec_result): Use std::vector, bool, and in-class
initialization.
(decode_line_1, decode_line_with_current_source)
(decode_line_with_last_displayed): Return std::vector.
* macrocmd.c (info_macros_command): Use std::vector.
* mi/mi-main.c (mi_cmd_trace_find): Use std::vector.
* probe.c (parse_probes_in_pspace, parse_probes): Adjust to use
std::vector.
* probe.h (parse_probes): Return a std::vector.
* python/python.c (gdbpy_decode_line): Use std::vector and
gdb::array_view.
* source.c (select_source_symtab, line_info): Use std::vector.
* stack.c (func_command): Use std::vector.
* symtab.h (struct symtabs_and_lines): Delete.
* tracepoint.c (tfind_line_command, scope_info): Use std::vector.
|
|
This changes install_breakpoint to take a std::unique_ptr rvalue-ref
argument. This makes it clear that install_breakpoint takes ownership
of the pointer, and prevents bugs like the one fixed by the previous
patch.
ChangeLog
2017-08-22 Tom Tromey <tom@tromey.com>
* breakpoint.h (install_breakpoint): Update.
* breakpoint.c (add_solib_catchpoint): Update.
(install_breakpoint): Change argument to a std::unique_ptr.
(create_fork_vfork_event_catchpoint): Use std::unique_ptr.
(create_breakpoint_sal, create_breakpoint): Update.
(watch_command_1, catch_exec_command_1)
(strace_marker_create_breakpoints_sal): Use std::unique_ptr.
(add_to_breakpoint_chain): Change argument to a std::unique_ptr.
Return the breakpoint.
(set_raw_breakpoint_without_location, set_raw_breakpoint)
(new_single_step_breakpoint): Update.
* break-catch-throw.c (handle_gnu_v3_exceptions): Use
std::unique_ptr.
* break-catch-syscall.c (create_syscall_event_catchpoint): Use
std::unique_ptr.
* break-catch-sig.c (create_signal_catchpoint): Use
std::unique_ptr.
* ada-lang.c (create_ada_exception_catchpoint): Use
std::unique_ptr.
|
|
The problem is that b->extra_string is free'ed twice: Once in the
breakpoint's dtor, and another time via make_cleanup (xfree).
This patch gets rid of the cleanups, fixing the problem.
Tested on x86_64 GNU/Linux.
gdb/ChangeLog:
2017-06-06 Pedro Alves <palves@redhat.com>
PR breakpoints/21553
* breakpoint.c (create_breakpoints_sal_default)
(init_breakpoint_sal, create_breakpoint_sal): Use
gdb::unique_xmalloc_ptr for string parameters.
(create_breakpoint): Constify 'extra_string' and 'cond_string'
parameters. Replace cleanups with gdb::unique_xmalloc_ptr.
(base_breakpoint_create_breakpoints_sal)
(bkpt_create_breakpoints_sal, tracepoint_create_breakpoints_sal)
(strace_marker_create_breakpoints_sal)
(create_breakpoints_sal_default): Use gdb::unique_xmalloc_ptr for
string parameters.
* breakpoint.h (breakpoint_ops::create_breakpoints_sal): Use
gdb::unique_xmalloc_ptr for string parameters.
(create_breakpoint): Constify 'extra_string' and 'cond_string'
parameters.
|
|
Breakpoints are currently in a limbo state between C and C++. There is
a pseudo class hierarchy implemented using struct fields. Taking
watchpoint as an example:
struct watchpoint
{
/* The base class. */
struct breakpoint base;
...
}
and it is instantianted with "new watchpoint ()". When destroyed, a
destructor is first invoked through the breakpoint_ops, and then the
memory is freed by calling delete through a pointer to breakpoint.
Address sanitizer complains about this, for example, because we new and
delete the same memory using different types.
This patch takes the logical step of making breakpoint subclasses extend
the breakpoint class for real, and converts their destructors to actual
C++ destructors.
Regtested on the buildbot.
gdb/ChangeLog:
* breakpoint.h (struct breakpoint_ops) <dtor>: Remove.
(struct breakpoint) <~breakpoint>: New.
(struct watchpoint): Inherit from breakpoint.
<~watchpoint>: New.
<base>: Remove.
(struct tracepoint): Inherit from breakpoint.
<base>: Remove.
* breakpoint.c (longjmp_breakpoint_ops): Remove.
(struct longjmp_breakpoint): Inherit from breakpoint.
<~longjmp_breakpoint>: New.
<base>: Remove.
(new_breakpoint_from_type): Remove casts.
(watchpoint_in_thread_scope): Remove reference to base field.
(watchpoint_del_at_next_stop): Likewise.
(update_watchpoint): Likewise.
(watchpoint_check): Likewise.
(bpstat_check_watchpoint): Likewise.
(set_longjmp_breakpoint): Likewise.
(struct fork_catchpoint): Inherit from breakpoint.
<base>: Remove.
(struct solib_catchpoint): Inherit from breakpoint.
<~solib_catchpoint>: New.
<base>: Remove.
(dtor_catch_solib): Change to ...
(solib_catchpoint::~solib_catchpoint): ... this.
(breakpoint_hit_catch_solib): Remove reference to base field.
(add_solib_catchpoint): Likewise.
(create_fork_vfork_event_catchpoint): Likewise.
(struct exec_catchpoint): Inherit from breakpoint.
<~exec_catchpoint>: New.
<base>: Remove.
(dtor_catch_exec): Change to ...
(exec_catchpoint::~exec_catchpoint): ... this.
(dtor_watchpoint): Change to ...
(watchpoint::~watchpoint): ... this.
(watch_command_1): Remove reference to base field.
(catch_exec_command_1): Likewise.
(base_breakpoint_dtor): Change to ...
(breakpoint::~breakpoint): ... this.
(base_breakpoint_ops): Remove dtor field value.
(longjmp_bkpt_dtor): Change to ...
(longjmp_breakpoint::~longjmp_breakpoint): ... this.
(strace_marker_create_breakpoints_sal): Remove reference to base
field.
(delete_breakpoint): Don't manually call breakpoint destructor.
(create_tracepoint_from_upload): Remove reference to base field.
(trace_pass_set_count): Likewise.
(initialize_breakpoint_ops): Don't initialize
momentary_breakpoint_ops, don't set dtors.
* ada-lang.c (struct ada_catchpoint): Inherit from breakpoint.
<~ada_catchpoint>: New.
<base>: Remove.
(create_excep_cond_exprs): Remove reference to base field.
(dtor_exception): Change to ...
(ada_catchpoint::~ada_catchpoint): ... this.
(dtor_catch_exception): Remove.
(dtor_catch_exception_unhandled): Remove.
(dtor_catch_assert): Remove.
(create_ada_exception_catchpoint): Remove reference to base
field.
(initialize_ada_catchpoint_ops): Don't set dtors.
* break-catch-sig.c (struct signal_catchpoint): Inherit from
breakpoint.
<~signal_catchpoint>: New.
<base>: Remove.
(signal_catchpoint_dtor): Change to ...
(signal_catchpoint::~signal_catchpoint): ... this.
(create_signal_catchpoint): Remove reference to base field.
(initialize_signal_catchpoint_ops): Don't set dtor.
* break-catch-syscall.c (struct syscall_catchpoint): Inherit
from breakpoint.
<~syscall_catchpoint>: New.
<base>: Remove.
(dtor_catch_syscall): Change to ...
(syscall_catchpoint::~syscall_catchpoint): ... this.
(create_syscall_event_catchpoint): Remove reference to base
field.
(initialize_syscall_catchpoint_ops): Don't set dtor.
* break-catch-throw.c (struct exception_catchpoint): Inherit
from breakpoint.
<~exception_catchpoint>: New.
<base>: Remove.
(dtor_exception_catchpoint): Change to ...
(exception_catchpoint::~exception_catchpoint): ... this.
(handle_gnu_v3_exceptions): Remove reference to base field.
(initialize_throw_catchpoint_ops): Don't set dtor.
* ctf.c (ctf_get_traceframe_address): Remove reference to base
field.
* remote.c (remote_get_tracepoint_status): Likewise.
* tracefile-tfile.c (tfile_get_traceframe_address): Likewise.
* tracefile.c (tracefile_fetch_registers): Likewise.
* tracepoint.c (actions_command): Likewise.
(validate_actionline): Likewise.
(tfind_1): Likewise.
(get_traceframe_location): Likewise.
(find_matching_tracepoint_location): Likewise.
(parse_tracepoint_status): Likewise.
* mi/mi-cmd-break.c (mi_cmd_break_passcount): Likewise.
|
|
Eh, struct breakpoint was made non-POD just today, with commit
d28cd78ad820e3 ("Change breakpoint event locations to
event_location_up"). :-)
src/gdb/breakpoint.c: In function ‘void init_raw_breakpoint_without_location(breakpoint*, gdbarch*, bptype, const breakpoint_ops*)’:
src/gdb/breakpoint.c:7447:28: error: use of deleted function ‘void* memset(T*, int, size_t) [with T = breakpoint; <template-parameter-1-2> = void; size_t = long unsigned int]’
memset (b, 0, sizeof (*b));
^
In file included from src/gdb/common/common-defs.h:85:0,
from src/gdb/defs.h:28,
from src/gdb/breakpoint.c:20:
src/gdb/common/poison.h:56:7: note: declared here
void *memset (T *s, int c, size_t n) = delete;
^
gdb/ChangeLog:
2017-04-25 Pedro Alves <palves@redhat.com>
* breakpoint.h (struct breakpoint): In-class initialize all
fields. Make boolean fields "bool".
* breakpoint.c (init_raw_breakpoint_without_location): Remove
memset call and initializations no longer necessary.
|
|
struct bp_location is not a POD, so we shouldn't be using memset to
initialize it.
Caught like this:
src/gdb/breakpoint.c: In function ‘bp_location** get_first_locp_gte_addr(CORE_ADDR)’:
src/gdb/breakpoint.c:950:53: error: use of deleted function ‘void* memset(T*, int, size_t) [with T = bp_location; <template-parameter-1-2> = void; size_t = long unsigned int]’
memset (&dummy_loc, 0, sizeof (struct bp_location));
^
In file included from src/gdb/defs.h:28:0,
from src/gdb/breakpoint.c:20:
src/gdb/common/common-defs.h:126:7: note: declared here
void *memset (T *s, int c, size_t n) = delete;
^
gdb/ChangeLog:
2017-04-25 Pedro Alves <palves@redhat.com>
* ada-lang.c (ada_catchpoint_location): Now a "class". Remove
"base" field and inherit from "bp_location" instead. Add
non-default ctor.
(allocate_location_exception): Use new non-default ctor.
* breakpoint.c (get_first_locp_gte_addr): Remove memset call.
(init_bp_location): Convert to ...
(bp_location::bp_location): ... this new ctor, and remove memset
call.
(base_breakpoint_allocate_location): Use the new non-default ctor.
* breakpoint.h (bp_location): Now a class. Declare default and
non-default ctors. In-class initialize all members.
(init_bp_location): Remove declaration.
|
|
I'm going to need to touch all these fields to add in-class
initialization anyway, might as well take the opportunity to finally
fix this...
gdb/ChangeLog:
2017-04-13 Pedro Alves <palves@redhat.com>
* breakpoint.h (struct breakpoint): Reindent.
|
|
This is a follow-up to an earlier patch. It changes breakpoint's
location and location_range_end members to be of type
event_location_up, then fixes up the users.
gdb/ChangeLog
2017-04-12 Tom Tromey <tom@tromey.com>
* remote.c (remote_download_tracepoint): Update.
* python/py-breakpoint.c (bppy_get_location): Update.
* guile/scm-breakpoint.c (bpscm_print_breakpoint_smob)
(gdbscm_breakpoint_location): Update.
* elfread.c (elf_gnu_ifunc_resolver_return_stop): Update.
* breakpoint.h (struct breakpoint) <location, location_range_end>:
Change type to event_location_up.
* breakpoint.c (create_overlay_event_breakpoint)
(create_longjmp_master_breakpoint)
(create_std_terminate_master_breakpoint)
(create_exception_master_breakpoint)
(breakpoint_event_location_empty_p, print_breakpoint_location)
(print_one_breakpoint_location, create_thread_event_breakpoint)
(init_breakpoint_sal, create_breakpoint)
(print_recreate_ranged_breakpoint, break_range_command)
(init_ada_exception_breakpoint, say_where): Update.
(base_breakpoint_dtor): Don't call delete_event_location.
(bkpt_print_recreate, tracepoint_print_recreate)
(dprintf_print_recreate, update_static_tracepoint)
(breakpoint_re_set_default): Update.
|
|
This introduces command_line_up, a unique_ptr for command_line
objects, and changes many places to use it. This removes a number of
cleanups.
Command lines are funny in that sometimes they are reference counted.
Once there is more C++-ification of some of the users, perhaps all of
these can be changed to use shared_ptr instead.
gdb/ChangeLog
2017-04-12 Tom Tromey <tom@tromey.com>
* tracepoint.c (actions_command): Update.
* python/python.c (python_command, python_interactive_command):
Update.
* mi/mi-cmd-break.c (mi_cmd_break_commands): Update.
* guile/guile.c (guile_command): Update.
* defs.h (read_command_lines, read_command_lines_1): Return
command_line_up.
(command_lines_deleter): New struct.
(command_line_up): New typedef.
* compile/compile.c (compile_code_command)
(compile_print_command): Update.
* cli/cli-script.h (get_command_line, copy_command_lines): Return
command_line_up.
(make_cleanup_free_command_lines): Remove.
* cli/cli-script.c (get_command_line, read_command_lines_1)
(copy_command_lines): Return command_line_up.
(while_command, if_command, read_command_lines, define_command)
(document_command): Update.
(do_free_command_lines_cleanup, make_cleanup_free_command_lines):
Remove.
* breakpoint.h (breakpoint_set_commands): Change type of
"commands".
* breakpoint.c (breakpoint_set_commands): Change type of
"commands". Update.
(do_map_commands_command, update_dprintf_command_list)
(create_tracepoint_from_upload): Update.
|
|
This is the remainder boring constification that all looks more of less
borderline obvious IMO.
gdb/ChangeLog:
2017-04-05 Pedro Alves <palves@redhat.com>
* ada-exp.y (yyerror): Constify.
* ada-lang.c (bound_name, get_selections)
(ada_variant_discrim_type)
(ada_variant_discrim_name, ada_value_struct_elt)
(ada_lookup_struct_elt_type, is_unchecked_variant)
(ada_which_variant_applies, standard_exc, ada_get_next_arg)
(catch_ada_exception_command_split)
(catch_ada_assert_command_split, catch_assert_command)
(ada_op_name): Constify.
* ada-lang.h (ada_yyerror, get_selections)
(ada_variant_discrim_name, ada_value_struct_elt): Constify.
* arc-tdep.c (arc_print_frame_cache): Constify.
* arm-tdep.c (arm_skip_stub): Constify.
* ax-gdb.c (gen_binop, gen_struct_ref_recursive, gen_struct_ref)
(gen_aggregate_elt_ref): Constify.
* bcache.c (print_bcache_statistics): Constify.
* bcache.h (print_bcache_statistics): Constify.
* break-catch-throw.c (catch_exception_command_1):
* breakpoint.c (struct ep_type_description::description):
Constify.
(add_solib_catchpoint): Constify.
(catch_fork_command_1): Add cast.
(add_catch_command): Constify.
* breakpoint.h (add_catch_command, add_solib_catchpoint):
Constify.
* bsd-uthread.c (bsd_uthread_state): Constify.
* buildsym.c (patch_subfile_names): Constify.
* buildsym.h (next_symbol_text_func, patch_subfile_names):
Constify.
* c-exp.y (yyerror): Constify.
(token::oper): Constify.
* c-lang.h (c_yyerror, cp_print_class_member): Constify.
* c-varobj.c (cplus_describe_child): Constify.
* charset.c (find_charset_names): Add cast.
(find_charset_names): Constify array and add const_cast.
* cli/cli-cmds.c (complete_command, cd_command): Constify.
(edit_command): Constify.
* cli/cli-decode.c (lookup_cmd): Constify.
* cli/cli-dump.c (dump_memory_command, dump_value_command):
Constify.
(struct dump_context): Constify.
(add_dump_command, restore_command): Constify.
* cli/cli-script.c (get_command_line): Constify.
* cli/cli-script.h (get_command_line): Constify.
* cli/cli-utils.c (check_for_argument): Constify.
* cli/cli-utils.h (check_for_argument): Constify.
* coff-pe-read.c (struct read_pe_section_data): Constify.
* command.h (lookup_cmd): Constify.
* common/print-utils.c (decimal2str): Constify.
* completer.c (gdb_print_filename): Constify.
* corefile.c (set_gnutarget): Constify.
* cp-name-parser.y (yyerror): Constify.
* cp-valprint.c (cp_print_class_member): Constify.
* cris-tdep.c (cris_register_name, crisv32_register_name):
Constify.
* d-exp.y (yyerror): Constify.
(struct token::oper): Constify.
* d-lang.h (d_yyerror): Constify.
* dbxread.c (struct header_file_location::name): Constify.
(add_old_header_file, add_new_header_file, last_function_name)
(dbx_next_symbol_text, add_bincl_to_list)
(find_corresponding_bincl_psymtab, set_namestring)
(find_stab_function_addr, read_dbx_symtab, start_psymtab)
(dbx_end_psymtab, read_ofile_symtab, process_one_symbol):
* defs.h (command_line_input, print_address_symbolic)
(deprecated_readline_begin_hook): Constify.
* dwarf2read.c (anonymous_struct_prefix, dwarf_bool_name):
Constify.
* event-top.c (handle_line_of_input): Constify and add cast.
* exceptions.c (catch_errors): Constify.
* exceptions.h (catch_errors): Constify.
* expprint.c (print_subexp_standard, op_string, op_name)
(op_name_standard, dump_raw_expression, dump_raw_expression):
* expression.h (op_name, op_string, dump_raw_expression):
Constify.
* f-exp.y (yyerror): Constify.
(struct token::oper): Constify.
(struct f77_boolean_val::name): Constify.
* f-lang.c (f_word_break_characters): Constify.
* f-lang.h (f_yyerror): Constify.
* fork-child.c (fork_inferior): Add cast.
* frv-tdep.c (struct gdbarch_tdep::register_names): Constify.
(new_variant): Constify.
* gdbarch.sh (pstring_ptr, pstring_list): Constify.
* gdbarch.c: Regenerate.
* gdbcore.h (set_gnutarget): Constify.
* go-exp.y (yyerror): Constify.
(token::oper): Constify.
* go-lang.h (go_yyerror): Constify.
* go32-nat.c (go32_sysinfo): Constify.
* guile/scm-breakpoint.c (gdbscm_breakpoint_expression): Constify.
* guile/scm-cmd.c (cmdscm_function): Constify.
* guile/scm-param.c (pascm_param_value): Constify.
* h8300-tdep.c (h8300_register_name, h8300s_register_name)
(h8300sx_register_name): Constify.
* hppa-tdep.c (hppa32_register_name, hppa64_register_name):
Constify.
* ia64-tdep.c (ia64_register_names): Constify.
* infcmd.c (construct_inferior_arguments): Constify.
(path_command, attach_post_wait): Constify.
* language.c (show_range_command, show_case_command)
(unk_lang_error): Constify.
* language.h (language_defn::la_error)
(language_defn::la_name_of_this): Constify.
* linespec.c (decode_line_2): Constify.
* linux-thread-db.c (thread_db_err_str): Constify.
* lm32-tdep.c (lm32_register_name): Constify.
* m2-exp.y (yyerror): Constify.
* m2-lang.h (m2_yyerror): Constify.
* m32r-tdep.c (m32r_register_names): Constify and make static.
* m68hc11-tdep.c (m68hc11_register_names): Constify.
* m88k-tdep.c (m88k_register_name): Constify.
* macroexp.c (appendmem): Constify.
* mdebugread.c (fdr_name, add_data_symbol, parse_type)
(upgrade_type, parse_external, parse_partial_symbols)
(mdebug_next_symbol_text, cross_ref, mylookup_symbol, new_psymtab)
(new_symbol): Constify.
* memattr.c (mem_info_command): Constify.
* mep-tdep.c (register_name_from_keyword): Constify.
* mi/mi-cmd-env.c (mi_cmd_env_path, _initialize_mi_cmd_env):
Constify.
* mi/mi-cmd-stack.c (list_args_or_locals): Constify.
* mi/mi-cmd-var.c (mi_cmd_var_show_attributes): Constify.
* mi/mi-main.c (captured_mi_execute_command): Constify and add
cast.
(mi_execute_async_cli_command): Constify.
* mips-tdep.c (mips_register_name): Constify.
* mn10300-tdep.c (register_name, mn10300_generic_register_name)
(am33_register_name, am33_2_register_name)
* moxie-tdep.c (moxie_register_names): Constify.
* nat/linux-osdata.c (osdata_type): Constify fields.
* nto-tdep.c (nto_parse_redirection): Constify.
* objc-lang.c (lookup_struct_typedef, lookup_objc_class)
(lookup_child_selector): Constify.
(objc_methcall::name): Constify.
* objc-lang.h (lookup_objc_class, lookup_child_selector)
(lookup_struct_typedef): Constify.
* objfiles.c (pc_in_section): Constify.
* objfiles.h (pc_in_section): Constify.
* p-exp.y (struct token::oper): Constify.
(yyerror): Constify.
* p-lang.h (pascal_yyerror): Constify.
* parser-defs.h (op_name_standard): Constify.
(op_print::string): Constify.
(exp_descriptor::op_name): Constify.
* printcmd.c (print_address_symbolic): Constify.
* psymtab.c (print_partial_symbols): Constify.
* python/py-breakpoint.c (stop_func): Constify.
(bppy_get_expression): Constify.
* python/py-cmd.c (cmdpy_completer::name): Constify.
(cmdpy_function): Constify.
* python/py-event.c (evpy_add_attribute)
(gdbpy_initialize_event_generic): Constify.
* python/py-event.h (evpy_add_attribute)
(gdbpy_initialize_event_generic): Constify.
* python/py-evts.c (add_new_registry): Constify.
* python/py-finishbreakpoint.c (outofscope_func): Constify.
* python/py-framefilter.c (get_py_iter_from_func): Constify.
* python/py-inferior.c (get_buffer): Add cast.
* python/py-param.c (parm_constant::name): Constify.
* python/py-unwind.c (fprint_frame_id): Constify.
* python/python.c (gdbpy_parameter_value): Constify.
* remote-fileio.c (remote_fio_func_map): Make 'name' const.
* remote.c (memory_packet_config::name): Constify.
(show_packet_config_cmd, remote_write_bytes)
(remote_buffer_add_string):
* reverse.c (exec_reverse_once): Constify.
* rs6000-tdep.c (variant::name, variant::description): Constify.
* rust-exp.y (rustyyerror): Constify.
* rust-lang.c (rust_op_name): Constify.
* rust-lang.h (rustyyerror): Constify.
* serial.h (serial_ops::name): Constify.
* sh-tdep.c (sh_sh_register_name, sh_sh3_register_name)
(sh_sh3e_register_name, sh_sh2e_register_name)
(sh_sh2a_register_name, sh_sh2a_nofpu_register_name)
(sh_sh_dsp_register_name, sh_sh3_dsp_register_name)
(sh_sh4_register_name, sh_sh4_nofpu_register_name)
(sh_sh4al_dsp_register_name): Constify.
* sh64-tdep.c (sh64_register_name): Constify.
* solib-darwin.c (lookup_symbol_from_bfd): Constify.
* spu-tdep.c (spu_register_name, info_spu_dma_cmdlist): Constify.
* stabsread.c (patch_block_stabs, read_type_number)
(ref_map::stabs, ref_add, process_reference)
(symbol_reference_defined, define_symbol, define_symbol)
(error_type, read_type, read_member_functions, read_cpp_abbrev)
(read_one_struct_field, read_struct_fields, read_baseclasses)
(read_tilde_fields, read_struct_type, read_array_type)
(read_enum_type, read_sun_builtin_type, read_sun_floating_type)
(read_huge_number, read_range_type, read_args, common_block_start)
(find_name_end): Constify.
* stabsread.h (common_block_start, define_symbol)
(process_one_symbol, symbol_reference_defined, ref_add):
* symfile.c (get_section_index, add_symbol_file_command):
* symfile.h (get_section_index): Constify.
* target-descriptions.c (tdesc_type::name): Constify.
(tdesc_free_type): Add cast.
* target.c (find_default_run_target):
(add_deprecated_target_alias, find_default_run_target)
(target_announce_detach): Constify.
(do_option): Constify.
* target.h (add_deprecated_target_alias): Constify.
* thread.c (print_thread_info_1): Constify.
* top.c (deprecated_readline_begin_hook, command_line_input):
Constify.
(init_main): Add casts.
* top.h (handle_line_of_input): Constify.
* tracefile-tfile.c (tfile_write_uploaded_tsv): Constify.
* tracepoint.c (tvariables_info_1, trace_status_mi): Constify.
(tfind_command): Rename to ...
(tfind_command_1): ... this and constify.
(tfind_command): New function.
(tfind_end_command, tfind_start_command): Adjust.
(encode_source_string): Constify.
* tracepoint.h (encode_source_string): Constify.
* tui/tui-data.c (tui_partial_win_by_name): Constify.
* tui/tui-data.h (tui_partial_win_by_name): Constify.
* tui/tui-source.c (tui_set_source_content_nil): Constify.
* tui/tui-source.h (tui_set_source_content_nil): Constify.
* tui/tui-win.c (parse_scrolling_args): Constify.
* tui/tui-windata.c (tui_erase_data_content): Constify.
* tui/tui-windata.h (tui_erase_data_content): Constify.
* tui/tui-winsource.c (tui_erase_source_content): Constify.
* tui/tui.c (tui_enable): Add cast.
* utils.c (defaulted_query): Constify.
(init_page_info): Add cast.
(puts_debug, subset_compare): Constify.
* utils.h (subset_compare): Constify.
* varobj.c (varobj_format_string): Constify.
* varobj.h (varobj_format_string): Constify.
* vax-tdep.c (vax_register_name): Constify.
* windows-nat.c (windows_detach): Constify.
* xcoffread.c (process_linenos, xcoff_next_symbol_text): Constify.
* xml-support.c (gdb_xml_end_element): Constify.
* xml-tdesc.c (tdesc_start_reg): Constify.
* xstormy16-tdep.c (xstormy16_register_name): Constify.
* xtensa-tdep.c (xtensa_find_register_by_name): Constify.
* xtensa-tdep.h (xtensa_register_t::name): Constify.
gdb/gdbserver/ChangeLog:
2017-04-05 Pedro Alves <palves@redhat.com>
* gdbreplay.c (sync_error): Constify.
* linux-x86-low.c (push_opcode): Constify.
|
|
The main motivation here is avoiding having to write a couple casts
like these:
if (!arg)
- arg = "";
+ arg = (char *) "";
in catch_exception_command_1 and catch_exec_command_1.
That requires making ep_parse_optional_if_clause and
check_for_argument take pointers to const strings. I then tried
propagating the resulting constification all the way, but that was
spiraling out of control, so instead I settled for keeping const and
non-const overloads.
gdb/ChangeLog:
2017-04-05 Pedro Alves <palves@redhat.com>
* break-catch-throw.c (handle_gnu_v3_exceptions): Constify
'cond_string' parameter.
(extract_exception_regexp): Constify 'string' parameter.
(catch_exception_command_1): Constify.
* breakpoint.c (init_catchpoint)
(create_fork_vfork_event_catchpoint): Constify 'cond_string'
parameter.
(ep_parse_optional_if_clause, catch_fork_command_1)
(catch_exec_command_1): Constify.
* breakpoint.h (init_catchpoint): Constify 'cond_string'
parameter.
(ep_parse_optional_if_clause): Constify.
* cli/cli-utils.c (remove_trailing_whitespace)
(check_for_argument): Constify.
* cli/cli-utils.h (remove_trailing_whitespace): Constify and add
non-const overload.
(check_for_argument): Likewise.
|
|
This applies the second part of GDB's End of Year Procedure, which
updates the copyright year range in all of GDB's files.
gdb/ChangeLog:
Update copyright year range in all GDB files.
|
|
After the previous patch, we end up with these two types with quite
similar, and potentially confusing names:
typedef gdb::unique_ptr<agent_expr> agent_expr_up;
/* Pointer to an agent_expr structure. */
typedef struct agent_expr *agent_expr_p;
The latter is only necessary to put agent_expr pointers in VECs. So
just eliminate it and use std::vector instead.
gdb/ChangeLog:
2016-11-08 Pedro Alves <palves@redhat.com>
* ax.h (agent_expr_p): Delete.
(DEF_VEC_P (agent_expr_p)): Delete.
* breakpoint.c (build_target_condition_list)
(build_target_command_list): Adjust to use of std::vector.
(bp_location_dtor): Remove now unnecessary VEC_free calls.
* breakpoint.h: Include <vector>.
(struct bp_target_info) <conditions, tcommands>: Now
std::vector's.
* remote.c (remote_add_target_side_condition): bp_tgt->conditions
is now a std::vector; adjust.
(remote_add_target_side_commands, remote_insert_breakpoint):
bp_tgt->tcommands is now a std::vector; adjust.
|
|
This patch makes the gen_* functions return a unique_ptr instead of
raw pointer:
typedef gdb::unique_ptr<agent_expr> agent_expr_up;
and then adjusts the codebase throughout to stop using
make_cleanup_free_agent_expr.
The cond_bytecode and cmd_bytecode fields of struct bp_location are
owning pointers, so they're changed to be unique_ptr's instead of raw
pointers.
gdb/ChangeLog:
2016-11-08 Pedro Alves <palves@redhat.com>
* ax-gdb.c (is_nontrivial_conversion): Use agent_expr_up.
(gen_trace_for_var, gen_trace_for_expr, gen_eval_for_expr)
(gen_trace_for_return_address, gen_printf): Use and return an
agent_expr_up. Don't use make_cleanup_free_agent_expr.
(agent_eval_command_one, maint_agent_printf_command): Use
agent_expr_up. Don't use make_cleanup_free_agent_expr.
* ax-gdb.h (gen_trace_for_expr, gen_trace_for_var)
(gen_trace_for_return_address, gen_eval_for_expr, gen_printf): Use
agent_expr_up.
* ax-general.c (new_agent_expr): Rename to ...
(agent_expr::agent_expr): ... this, and now a constructor.
(free_agent_expr): Rename to ...
(agent_expr::~agent_exp): ... this, and now a destructor.
(do_free_agent_expr_cleanup, make_cleanup_free_agent_expr):
Delete.
* ax.h (struct agent_expr): Add ctor/dtor.
(agent_expr_up): New typedef.
(new_agent_expr, free_agent_expr, make_cleanup_free_agent_expr):
Delete declarations.
* breakpoint.c (parse_cond_to_aexpr): Use and return an
agent_expr_up. Don't use make_cleanup_free_agent_expr.
(build_target_condition_list): Adjust to use agent_expr_up.
(parse_cmd_to_aexpr): Use and return an agent_expr_up. Don't use
make_cleanup_free_agent_expr.
(build_target_command_list): Adjust to use agent_expr_up.
(force_breakpoint_reinsertion): Adjust to use agent_expr_up.
(bp_location_dtor): Remove unnecessary free_agent_expr and xfree
calls.
* breakpoint.h (struct bp_target_info) <cond_bytecode,
cmd_bytecode>: Now agent_expr_up's.
* remote.c (remote_download_tracepoint): Adjust to use
agent_expr_up and remove use of make_cleanup_free_agent_expr.
* tracepoint.c (validate_actionline, collect_symbol): Adjust to
use agent_expr_up and remove uses of make_cleanup_free_agent_expr.
(collection_list::~collection_list): Call delete instead of
free_agent_expr.
(encode_actions_1): Adjust to use agent_expr_up and remove uses of
make_cleanup_free_agent_expr.
(add_aexpr): Change parameter type to agent_expr_up; Return a raw
agent_expr pointer.
|
|
This patch makes parse_expression and friends return a unique_ptr
instead of raw pointer [1]:
typedef gdb::unique_malloc_ptr<expression> expression_up;
and then adjusts the codebase throughout to stop using cleanups to
manage lifetime of expression pointers.
Whenever I found a structure owning an expression pointer, I made it
store a unique_ptr instead of a raw pointer, which then requires using
new/delete of the holding structure, instead of XNEW/xfree.
[1] - I'd like to set the rule that types named with an "_up" suffix
are unique_ptr typedefs.
Note I used gdb::unique_xmalloc_ptr instead of gdb::unique_ptr, simply
because we still use xmalloc instead of new to allocate expression
objects. Once that's changed, all we need to do is change the
expression_up typedef and the smart pointer will then call delete
instead of xfree.
gdb/ChangeLog:
2016-11-08 Pedro Alves <palves@redhat.com>
* ada-lang.c (ada_read_renaming_var_value): Use expression_up.
(struct ada_catchpoint_location) <excep_cond_expr>: Now an
expression_up.
(ada_catchpoint_location_dtor): Reset excep_cond_expr instead of
using xfree.
(create_excep_cond_exprs): Use expression_up and gdb::move.
(allocate_location_exception): Use new instead of XNEW.
(should_stop_exception): Likewise. Adjust to use expression_up.
(create_ada_exception_catchpoint): Use new instead of XNEW.
* ax-gdb.c (agent_eval_command_one): Use expression_up instead of
cleanups.
(maint_agent_printf_command): Use expression_up.
* break-catch-sig.c (create_signal_catchpoint): Use new instead of
XNEW.
* break-catch-syscall.c (create_syscall_event_catchpoint):
Likewise.
* break-catch-throw.c (handle_gnu_v3_exceptions): Use new instead
of XCNEW. Use gdb::unique_ptr instead of cleanups.
* breakpoint.c (set_breakpoint_condition, update_watchpoint)
(parse_cmd_to_aexpr, watchpoint_check)
(bpstat_check_breakpoint_conditions, watchpoint_locations_match):
Adjust to use expression_up.
(init_bp_location): Adjust.
(free_bp_location): Use delete instead of xfree.
(set_raw_breakpoint_without_location, set_raw_breakpoint)
(add_solib_catchpoint, create_fork_vfork_event_catchpoint)
(new_single_step_breakpoint, create_breakpoint_sal): Use new
instead of XNEW.
(find_condition_and_thread): Adjust to use expression_up.
(create_breakpoint): Use new instead of XNEW.
(dtor_watchpoint): Don't xfree expression pointers, they're
unique_ptr's now.
(insert_watchpoint, remove_watchpoint): Adjust.
(watch_command_1): Use expression_up. Use new instead of XCNEW.
(catch_exec_command_1): Use new instead of XNEW.
(bp_location_dtor): Don't xfree expression pointers, they're
unique_ptr's now.
(base_breakpoint_allocate_location)
(strace_marker_create_breakpoints_sal): Use new instead of XNEW.
(delete_breakpoint): Use delete instead of xfree.
* breakpoint.h (struct bp_location) <cond>: Now an
unique_ptr<expression> instead of a raw pointer.
(struct watchpoint) <exp, cond_exp>: Likewise.
* cli/cli-script.c (execute_control_command): Use expression_up
instead of cleanups.
* dtrace-probe.c (dtrace_process_dof_probe): Use expression_up.
* eval.c (parse_and_eval_address, parse_and_eval_long)
(parse_and_eval, parse_to_comma_and_eval, parse_and_eval_type):
Use expression_up instead of cleanups.
* expression.h (expression_up): New typedef.
(parse_expression, parse_expression_with_language, parse_exp_1):
Change return type to expression_up.
* mi/mi-main.c (mi_cmd_data_evaluate_expression)
(print_variable_or_computed): Use expression_up.
* objc-lang.c (print_object_command): Use expression_up instead of
cleanups.
* parse.c (parse_exp_1, parse_exp_in_context)
(parse_exp_in_context_1, parse_expression)
(parse_expression_with_language): Return an expression_up instead
of a raw pointer.
(parse_expression_for_completion): Use expression_up.
* printcmd.c (struct display) <exp>: Now an expression_up instead
of a raw pointer.
(print_command_1, output_command_const, set_command, x_command):
Use expression_up instead of cleanups.
(display_command): Likewise. Use new instead of XNEW.
(free_display): Use delete instead of xfree.
(do_one_display): Adjust to use expression_up.
* remote.c (remote_download_tracepoint): Likewise.
* stack.c (return_command): Likewise.
* tracepoint.c (validate_actionline, encode_actions_1): Use
expression_up instead of cleanups.
* typeprint.c (whatis_exp, maintenance_print_type): Likewise.
* value.c (init_if_undefined_command): Likewise.
* varobj.c (struct varobj_root) <exp>: Now an expression_up
instead of a raw pointer.
(varobj_create): Adjust.
(varobj_set_value): Use an expression_up instead of cleanups.
(new_root_variable): Use new instead of XNEW.
(free_variable): Use delete instead of xfree.
(value_of_root_1): Use std::swap.
|
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This is constification needed for next patch. Adjust
commands_command_1 to use std::string too because the "arg" parameter
is currently overwritten and then passed to make_cleanup. The
constification alone would trigger a compile error in the make_cleanup
call otherwise (passing const char * to void * parameter). Using
std::string gets rid of the cleanup in the first place, resulting in
simpler code.
gdb/ChangeLog:
2016-11-08 Pedro Alves <palves@redhat.com>
* breakpoint.c (struct commands_info) <arg>: Constify.
(commands_command_1): Constify 'arg' parameter. Use std::string
and string_printf.
(commands_from_control_command): Constify 'arg' parameter.
(map_breakpoint_numbers): Constify 'args' parameter.
* breakpoint.h (commands_from_control_command): Constify 'arg'
parameter.
|
|
This patch changes gdbarch method software_single_step to return a
vector of addresses on which GDB should insert breakpoints, and don't
insert breakpoints. Instead, the caller of
gdbarch_software_single_step inserts breakpoints if the returned
vector is not NULL.
gdb:
2016-11-08 Yao Qi <yao.qi@linaro.org>
* aarch64-tdep.c (aarch64_software_single_step): Return
VEC (CORE_ADDR) *. Return NULL instead of 0. Don't call
insert_single_step_breakpoint.
* alpha-tdep.c (alpha_deal_with_atomic_sequence): Likewise.
(alpha_software_single_step): Likewise.
* alpha-tdep.h (alpha_software_single_step): Update declaration.
* arm-linux-tdep.c (arm_linux_software_single_step): Return
VEC (CORE_ADDR) *. Return NULL instead of 0.
* arm-tdep.c (arm_software_single_step): Return NULL instead of 0.
* arm-tdep.h (arm_software_single_step): Update declaration.
* breakpoint.c (insert_single_step_breakpoints): New function.
* breakpoint.h (insert_single_step_breakpoints): Declare.
* cris-tdep.c (cris_software_single_step): Return
VEC (CORE_ADDR) *. Don't call insert_single_step_breakpoint.
* gdbarch.sh (software_single_step): Change it to return
VEC (CORE_ADDR) *.
* gdbarch.c, gdbarch.h: Regenerated.
* infrun.c (maybe_software_singlestep): Adjust.
* mips-tdep.c (mips_deal_with_atomic_sequence): Return
VEC (CORE_ADDR) *. Don't call insert_single_step_breakpoint.
(micromips_deal_with_atomic_sequence): Likewise.
(deal_with_atomic_sequence): Likewise.
(mips_software_single_step): Likewise.
* mips-tdep.h (mips_software_single_step): Update declaration.
* moxie-tdep.c (moxie_software_single_step): Likewise.
* nios2-tdep.c (nios2_software_single_step): Likewise.
* ppc-tdep.h (ppc_deal_with_atomic_sequence): Update
declaration.
* record-full.c (record_full_resume): Adjust.
(record_full_wait_1): Likewise.
* rs6000-aix-tdep.c (rs6000_software_single_step): Return
VEC (CORE_ADDR) *. Don't call insert_single_step_breakpoint.
* rs6000-tdep.c (ppc_deal_with_atomic_sequence): Return
VEC (CORE_ADDR) *. Don't call insert_single_step_breakpoint.
* s390-linux-tdep.c (s390_software_single_step): Likewise.
* sparc-tdep.c (sparc_software_single_step): Likewise.
* spu-tdep.c (spu_software_single_step): Likewise.
* tic6x-tdep.c (tic6x_software_single_step): Likewise.
|
|
This patch renames placed_size to kind.
gdb:
2016-11-03 Yao Qi <yao.qi@linaro.org>
* breakpoint.h (struct bp_target_info) <placed_size>: Remove.
<kind>: New field.
Update all users.
|
|
This converts tid_range_parser and get_number_or_range to be classes.
The various tid_range_parser_* and get_number_or_range_* functions
become methods on the respective classes. Then it updates the users
to follow.
The rationale for the change is that this provides better
encapsulation. For example, this forced me to think of a better
interface between tid_range_parser and get_number_or_range, since the
former peeked into the latter's internals a bit too much. That ended
up resulting mostly in these two not-just-straight-1-1 changes:
void
-tid_range_parser_skip (struct tid_range_parser *parser)
+tid_range_parser::skip_range ()
{
...
- tid_range_parser_init (parser, parser->range_parser.end_ptr,
- parser->default_inferior);
+ m_range_parser.skip_range ();
+ init (m_range_parser.string (), m_default_inferior);
}
and:
/* If we successfully parsed a thread number or finished parsing a
thread range, switch back to assuming the next TID is
inferior-qualified. */
- if (parser->range_parser.end_ptr == NULL
- || parser->range_parser.string == parser->range_parser.end_ptr)
+ if (!m_range_parser.in_range ())
{
For the same reason (encapsulation), this moves the enum
tid_range_state definition to within the tid_parser class's scope,
since that is private implementation detail.
While at it, switch to use "bool" for booleans.
gdb/ChangeLog:
2016-10-13 Pedro Alves <palves@redhat.com>
Tom Tromey <tom@tromey.com>
* tid-parse.h (tid_range_parser): New class.
(enum tid_range_state): Move into tid_range_parser's scope.
Remove TID_RANGE_ prefix from all values.
(tid_range_parser_get_tid, tid_range_parser_get_tid_range)
(tid_range_parser_star_range, tid_range_parser_finished)
(tid_range_parser_skip, tid_range_parser_qualified): Don't
declare.
(tid_is_in_list): Update comment.
* tid-parse.c (tid_range_parser::tid_range_parser): New.
(init, finished, get_string, skip, tid_is_qualified)
(get_tid_or_range, get_tid_range, get_tid, star_range): Rename;
turn into methods.
(tid_is_in_list): Adjust.
* cli/cli-utils.h (number_or_range_parser): New class.
(init_number_or_range, get_number_or_range)
(number_range_setup_range): Don't declare.
* cli/cli-utils.c
(number_or_range_parser::number_or_range_parser): New.
(init_number_or_range, get_number_or_range)
(number_range_setup_range): Rename; turn into methods.
(number_is_in_list): Adjust.
* breakpoint.c (map_breakpoint_numbers): Adjust. Use bool.
(trace_pass_command, get_tracepoint_by_number): Adjust.
* breakpoint.h (get_tracepoint_by_number): Adjust.
* inferior.c (detach_inferior_command, kill_inferior_command)
(remove_inferior_command): Adjust.
* linespec.c (decode_line_2): Adjust.
* memattr.c (mem_enable_command, mem_disable_command)
(mem_delete_command): Adjust.
* printcmd.c (map_display_numbers): Adjust.
* reverse.c (delete_bookmark_command, bookmarks_info): Adjust.
* thread.c (thread_apply_command): Adjust.
|
|
So the target knows whether we're detaching breakpoints.
Nothing uses the parameter in this patch yet.
gdb/ChangeLog:
2016-08-10 Pedro Alves <palves@redhat.com>
PR gdb/19187
* break-catch-sig.c (signal_catchpoint_remove_location): Adjust
interface.
* break-catch-syscall.c (remove_catch_syscall):
* breakpoint.c (enum remove_bp_reason): Moved to breakpoint.h.
(remove_breakpoint_1): Pass 'reason' down.
(remove_catch_fork, remove_catch_vfork, remove_catch_solib)
(remove_catch_exec, remove_watchpoint, remove_masked_watchpoint)
(base_breakpoint_remove_location, bkpt_remove_location)
(bkpt_probe_remove_location, bkpt_probe_remove_location): Adjust
interface.
* breakpoint.h (enum remove_bp_reason): Moved here from
breakpoint.c.
(struct breakpoint_ops) <remove_location>: Add 'reason' parameter.
* corelow.c (core_remove_breakpoint): New function.
(init_core_ops): Install it as to_remove_breakpoint method.
* exec.c (exec_remove_breakpoint): New function.
(init_exec_ops): Install it as to_remove_breakpoint method.
* mem-break.c (memory_remove_breakpoint): Adjust interface.
* record-btrace.c (record_btrace_remove_breakpoint): Adjust
interface.
* record-full.c (record_full_remove_breakpoint)
(record_full_core_remove_breakpoint): Adjust interface.
* remote.c (remote_remove_breakpoint): Adjust interface.
* target-debug.h (target_debug_print_enum_remove_bp_reason): New
macro.
* target-delegates.c: Regenerate.
* target.c (target_remove_breakpoint): Add 'reason' parameter.
* target.h (struct target_ops) <to_remove_breakpoint>: Add
'reason' parameter.
(target_remove_breakpoint, memory_remove_breakpoint): Add 'reason'
parameter.
|
|
This patch adds a "pending" attribute to gdb.Breakpoint.
Built and regtested on x86-64 Fedora 23.
2016-07-13 Tom Tromey <tom@tromey.com>
PR python/17698:
* NEWS: Update.
* python/py-breakpoint.c (bppy_get_pending): New function.
(breakpoint_object_getset): Add entry for "pending".
* breakpoint.h (pending_breakpoint_p): Declare.
* breakpoint.c (pending_breakpoint_p): New function.
2016-07-13 Tom Tromey <tom@tromey.com>
PR python/17698:
* python.texi (Breakpoints In Python): Document
Breakpoint.pending.
2016-07-13 Tom Tromey <tom@tromey.com>
PR python/17698:
* gdb.python/py-breakpoint.exp (test_bkpt_basic): Add "pending"
test.
(test_watchpoints): Likewise.
(test_bkpt_pending): New proc.
|
|
Currently, we always re-set all locations of all breakpoints. This
commit makes us re-set only locations of the current program space.
If we loaded symbols to a program space (e.g., "file" command or some
shared library was loaded), GDB must run through all breakpoints and
determine if any new locations need to be added to the breakpoint.
However, there's no reason to recreate locations for _other_ program
spaces, as those haven't changed.
Similarly, when we create a new inferior, through e.g., a fork, GDB
must run through all breakpoints and determine if any new locations
need to be added to the breakpoint. There's no reason to destroy the
locations of the parent inferior and other inferiors. We know those
won't change.
In addition to being inneficient, resetting breakpoints of inferiors
that are currently running is problematic, because:
- some targets can't read memory while the inferior is running.
- the inferior might exit while we're re-setting its breakpoints,
which may confuse prologue skipping.
I went through all the places where we call breakpoint_re_set, and it
seems to me that all can be changed to only re-set locations of the
current program space.
The patch that reversed threads order in "info threads" etc. happened
to make gdb.threads/fork-plus-thread.exp expose this problem when
testing on x86/-m32. The problem was latent and masked out by chance
by the code-cache:
https://sourceware.org/ml/gdb-patches/2016-01/msg00213.html
Tested on x86-64 F20, native (-m64/-m32) and extended-remote
gdbserver.
Fixes the regression discussed in the url above with --target_board=unix/-m32:
-FAIL: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: inferior 1 exited
+PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: inferior 1 exited
-FAIL: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: no threads left (timeout)
-FAIL: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: only inferior 1 left (the program exited)
+PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: no threads left
+PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: only inferior 1 left
gdb/ChangeLog:
2016-01-19 Pedro Alves <palves@redhat.com>
* ax-gdb.c (agent_command_1): Adjust call to decode_line_full.
* break-catch-throw.c (re_set_exception_catchpoint): Pass the
current program space down to linespec decoding and breakpoint
location updating.
* breakpoint.c (parse_breakpoint_sals): Adjust calls to
decode_line_full.
(until_break_command): Adjust calls to decode_line_1.
(base_breakpoint_decode_location, bkpt_decode_location): Add
'search_pspace' parameter. Pass it along.
(bkpt_probe_create_sals_from_location): Adjust calls to
parse_probes.
(tracepoint_decode_location, tracepoint_probe_decode_location)
(strace_marker_decode_location): Add 'search_pspace' parameter.
Pass it along.
(all_locations_are_pending): Rewrite to take a breakpoint and
program space as arguments instead.
(hoist_existing_locations): New function.
(update_breakpoint_locations): Add 'filter_pspace' parameter. Use
hoist_existing_locations instead of always removing all locations,
and adjust to all_locations_are_pending change.
(location_to_sals): Add 'search_pspace' parameter. Pass it along.
Don't disable the breakpoint if there are other locations in
another program space.
(breakpoint_re_set_default): Adjust to pass down the current
program space as filter program space.
(decode_location_default): Add 'search_pspace' parameter and pass
it along.
(prepare_re_set_context): Don't switch program space here.
(breakpoint_re_set): Use save_current_space_and_thread instead of
save_current_program_space.
* breakpoint.h (struct breakpoint_ops) <decode_location>: Add
'search_pspace' parameter.
(update_breakpoint_locations): Add 'filter_pspace' parameter.
* cli/cli-cmds.c (edit_command, list_command): Adjust calls to
decode_line_1.
* elfread.c (elf_gnu_ifunc_resolver_return_stop): Pass the current
program space as filter program space.
* linespec.c (struct linespec_state) <search_pspace>: New field.
(create_sals_line_offset, convert_explicit_location_to_sals)
(parse_linespec): Pass the search program space down.
(linespec_state_constructor): Add 'search_pspace' parameter.
Store it.
(linespec_parser_new): Add 'search_pspace' parameter and pass it
along.
(linespec_lex_to_end): Adjust.
(decode_line_full, decode_line_1): Add 'search_pspace' parameter
and pass it along.
(decode_line_with_last_displayed): Adjust.
(collect_symtabs_from_filename, symtabs_from_filename): New
'search_pspace' parameter. Use it.
(find_function_symbols): Pass the search program space down.
* linespec.h (decode_line_1, decode_line_full): Add
'search_pspace' parameter.
* probe.c (parse_probes_in_pspace): New function, factored out
from ...
(parse_probes): ... this. Add 'search_pspace' parameter and use
it.
* probe.h (parse_probes): Add pspace' parameter.
* python/python.c (gdbpy_decode_line): Adjust.
* tracepoint.c (scope_info): Adjust.
|
|
This commit changes GDB like this:
- Program received signal SIGINT, Interrupt.
+ Thread 1 "main" received signal SIGINT, Interrupt.
- Breakpoint 1 at 0x40087a: file threads.c, line 87.
+ Thread 3 "bar" hit Breakpoint 1 at 0x40087a: file threads.c, line 87.
... once the program goes multi-threaded. Until GDB sees a second
thread spawn, the output is still the same as before, per the
discussion back in 2012:
https://www.sourceware.org/ml/gdb/2012-11/msg00010.html
This helps non-stop mode, where you can't easily tell which thread hit
a breakpoint or received a signal:
(gdb) info threads
Id Target Id Frame
* 1 Thread 0x7ffff7fc1740 (LWP 19362) "main" (running)
2 Thread 0x7ffff7fc0700 (LWP 19366) "foo" (running)
3 Thread 0x7ffff77bf700 (LWP 19367) "bar" (running)
(gdb)
Program received signal SIGUSR1, User defined signal 1.
0x0000003616a09237 in pthread_join (threadid=140737353877248, thread_return=0x7fffffffd5b8) at pthread_join.c:92
92 lll_wait_tid (pd->tid);
(gdb) b threads.c:87
Breakpoint 1 at 0x40087a: file threads.c, line 87.
(gdb)
Breakpoint 1, thread_function1 (arg=0x1) at threads.c:87
87 usleep (1); /* Loop increment. */
The best the user can do is run "info threads" and try to figure
things out.
It actually also affects all-stop mode, in case of "handle SIG print
nostop":
...
Program received signal SIGUSR1, User defined signal 1.
Program received signal SIGUSR1, User defined signal 1.
Program received signal SIGUSR1, User defined signal 1.
Program received signal SIGUSR1, User defined signal 1.
...
The above doesn't give any clue that these were different threads
getting the SIGUSR1 signal.
I initially thought of lowercasing "breakpoint" in
"Thread 3 hit Breakpoint 1"
but then after trying it I realized that leaving "Breakpoint"
uppercase helps the eye quickly find the relevant information. It's
also easier to implement not showing anything about threads until the
program goes multi-threaded this way.
Here's a larger example session in non-stop mode:
(gdb) c -a&
Continuing.
(gdb) interrupt -a
(gdb)
Thread 1 "main" stopped.
0x0000003616a09237 in pthread_join (threadid=140737353877248, thread_return=0x7fffffffd5b8) at pthread_join.c:92
92 lll_wait_tid (pd->tid);
Thread 2 "foo" stopped.
0x0000003615ebc6ed in nanosleep () at ../sysdeps/unix/syscall-template.S:81
81 T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
Thread 3 "bar" stopped.
0x0000003615ebc6ed in nanosleep () at ../sysdeps/unix/syscall-template.S:81
81 T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
b threads.c:87
Breakpoint 4 at 0x40087a: file threads.c, line 87.
(gdb) b threads.c:67
Breakpoint 5 at 0x400811: file threads.c, line 67.
(gdb) c -a&
Continuing.
(gdb)
Thread 3 "bar" hit Breakpoint 4, thread_function1 (arg=0x1) at threads.c:87
87 usleep (1); /* Loop increment. */
Thread 2 "foo" hit Breakpoint 5, thread_function0 (arg=0x0) at threads.c:68
68 (*myp) ++;
info threads
Id Target Id Frame
* 1 Thread 0x7ffff7fc1740 (LWP 31957) "main" (running)
2 Thread 0x7ffff7fc0700 (LWP 31961) "foo" thread_function0 (arg=0x0) at threads.c:68
3 Thread 0x7ffff77bf700 (LWP 31962) "bar" thread_function1 (arg=0x1) at threads.c:87
(gdb) shell kill -SIGINT 31957
(gdb)
Thread 1 "main" received signal SIGINT, Interrupt.
0x0000003616a09237 in pthread_join (threadid=140737353877248, thread_return=0x7fffffffd5b8) at pthread_join.c:92
92 lll_wait_tid (pd->tid);
info threads
Id Target Id Frame
* 1 Thread 0x7ffff7fc1740 (LWP 31957) "main" 0x0000003616a09237 in pthread_join (threadid=140737353877248, thread_return=0x7fffffffd5b8) at pthread_join.c:92
2 Thread 0x7ffff7fc0700 (LWP 31961) "foo" thread_function0 (arg=0x0) at threads.c:68
3 Thread 0x7ffff77bf700 (LWP 31962) "bar" thread_function1 (arg=0x1) at threads.c:87
(gdb) t 2
[Switching to thread 2, Thread 0x7ffff7fc0700 (LWP 31961)]
#0 thread_function0 (arg=0x0) at threads.c:68
68 (*myp) ++;
(gdb) catch syscall
Catchpoint 6 (any syscall)
(gdb) c&
Continuing.
(gdb)
Thread 2 "foo" hit Catchpoint 6 (call to syscall nanosleep), 0x0000003615ebc6ed in nanosleep () at ../sysdeps/unix/syscall-template.S:81
81 T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
I'll work on documentation next if this looks agreeable.
This patch applies on top of the star wildcards thread IDs series:
https://sourceware.org/ml/gdb-patches/2016-01/msg00291.html
For convenience, I've pushed this to the
users/palves/show-which-thread-caused-stop branch.
gdb/doc/ChangeLog:
2016-01-18 Pedro Alves <palves@redhat.com>
* gdb.texinfo (Threads): Mention that GDB displays the ID and name
of the thread that hit a breakpoint or received a signal.
gdb/ChangeLog:
2016-01-18 Pedro Alves <palves@redhat.com>
* NEWS: Mention that GDB now displays the ID and name of the
thread that hit a breakpoint or received a signal.
* break-catch-sig.c (signal_catchpoint_print_it): Use
maybe_print_thread_hit_breakpoint.
* break-catch-syscall.c (print_it_catch_syscall): Likewise.
* break-catch-throw.c (print_it_exception_catchpoint): Likewise.
* breakpoint.c (maybe_print_thread_hit_breakpoint): New function.
(print_it_catch_fork, print_it_catch_vfork, print_it_catch_solib)
(print_it_catch_exec, print_it_ranged_breakpoint)
(print_it_watchpoint, print_it_masked_watchpoint, bkpt_print_it):
Use maybe_print_thread_hit_breakpoint.
* breakpoint.h (maybe_print_thread_hit_breakpoint): Declare.
* gdbthread.h (show_thread_that_caused_stop): Declare.
* infrun.c (print_signal_received_reason): Print which thread
received signal.
* thread.c (show_thread_that_caused_stop): New function.
gdb/testsuite/ChangeLog:
2016-01-18 Pedro Alves <palves@redhat.com>
* gdb.base/async-shell.exp: Adjust expected output.
* gdb.base/dprintf-non-stop.exp: Adjust expected output.
* gdb.base/siginfo-thread.exp: Adjust expected output.
* gdb.base/watchpoint-hw-hit-once.exp: Adjust expected output.
* gdb.java/jnpe.exp: Adjust expected output.
* gdb.threads/clone-new-thread-event.exp: Adjust expected output.
* gdb.threads/continue-pending-status.exp: Adjust expected output.
* gdb.threads/leader-exit.exp: Adjust expected output.
* gdb.threads/manythreads.exp: Adjust expected output.
* gdb.threads/pthreads.exp: Adjust expected output.
* gdb.threads/schedlock.exp: Adjust expected output.
* gdb.threads/siginfo-threads.exp: Adjust expected output.
* gdb.threads/signal-command-multiple-signals-pending.exp: Adjust
expected output.
* gdb.threads/signal-delivered-right-thread.exp: Adjust expected
output.
* gdb.threads/sigthread.exp: Adjust expected output.
* gdb.threads/watchpoint-fork.exp: Adjust expected output.
|
|
gdb/ChangeLog:
Update year range in copyright notice of all files.
|
|
Before, on systems that did not support PTRACE_EVENT_CLONE, both GDB and
GDBServer coordinated with libthread_db.so to insert breakpoints at magic
locations in libpthread.so, in order to break at thread creation and
thread death.
Support for thread events was removed from GDBServer as patch:
https://sourceware.org/ml/gdb-patches/2015-11/msg00466.html
This patch removes support for thread events in GDB.
No regressions found on Ubuntu 14.04 x86_64.
gdb/ChangeLog:
* breakpoint.c (remove_thread_event_breakpoints): Remove.
* breakpoint.h (remove_thread_event_breakpoints): Remove
declaration.
* linux-nat.c (in_pid_list_p): Remove.
(lin_lwp_attach_lwp): Remove.
* linux-nat.h (lin_lwp_attach_lwp): Remove declaration.
* linux-thread-db.c (thread_db_use_events): Remove.
(struct thread_db_info) <td_create_bp_addr>: Remove.
<td_death_bp_addr>: Likewise.
<td_ta_event_addr_p>: Likewise.
<td_ta_set_event_p>: Likewise.
<td_ta_clear_event_p>: Likewise.
<td_ta_event_getmsg_p>: Likewise.
<td_thr_event_enable_p>: Likewise.
(attach_thread): Likewise.
(detach_thread): Likewise.
(have_threads_callback): Likewise.
(have_threads): Likewise.
(enable_thread_event): Likewise.
(enable_thread_event_reporting): Likewise.
(try_thread_db_load_1): Remove td_ta_event_addr, td_ta_set_event,
td_ta_clear_event, td_ta_event_getmsg, td_thr_event_enable
initializations.
(try_thread_db_load_1): Remove enable_thread_event_reporting call.
(disable_thread_event_reporting): Remove.
(record_thread): Adapt to thread_db_use_event removal.
(detach_thread): Remove.
(thread_db_detach): Adapt to thread_db_use_event removal.
(check_event): Remove.
(thread_db_wait): Adapt to thread events support removal.
(thread_db_mourn_inferior): Likewise.
(find_new_threads_callback): Likewise.
(find_new_threads_once): Likewise.
(thread_db_update_thread_list): Likewise.
|
|
Assuming displaced stepping is enabled, and a breakpoint is set in the
memory region of the scratch pad, things break. One of two cases can
happen:
#1 - The breakpoint wasn't inserted yet (all threads were stopped), so
after setting up the displaced stepping scratch pad with the
adjusted copy of the instruction we're trying to single-step, we
insert the breakpoint, which corrupts the scratch pad, and the
inferior executes the wrong instruction. (Example below.)
This is clearly unacceptable.
#2 - The breakpoint was already inserted, so setting up the displaced
stepping scratch pad overwrites the breakpoint. This is OK in
the sense that we already assume that no thread is going to
executes the code in the scratch pad range (after initial
startup) anyway.
This commit addresses both cases by simply punting on displaced
stepping if we have a breakpoint in the scratch pad range.
The #1 case above explains a few regressions exposed by the AS/NS
series on x86:
Running ./gdb.dwarf2/callframecfa.exp ...
FAIL: gdb.dwarf2/callframecfa.exp: set display for call-frame-cfa
FAIL: gdb.dwarf2/callframecfa.exp: step 1 for call-frame-cfa
FAIL: gdb.dwarf2/callframecfa.exp: step 2 for call-frame-cfa
FAIL: gdb.dwarf2/callframecfa.exp: step 3 for call-frame-cfa
FAIL: gdb.dwarf2/callframecfa.exp: step 4 for call-frame-cfa
Running ./gdb.dwarf2/typeddwarf.exp ...
FAIL: gdb.dwarf2/typeddwarf.exp: continue to breakpoint: continue to typeddwarf.c:53
FAIL: gdb.dwarf2/typeddwarf.exp: check value of x at typeddwarf.c:53
FAIL: gdb.dwarf2/typeddwarf.exp: check value of y at typeddwarf.c:53
FAIL: gdb.dwarf2/typeddwarf.exp: check value of z at typeddwarf.c:53
FAIL: gdb.dwarf2/typeddwarf.exp: continue to breakpoint: continue to typeddwarf.c:73
FAIL: gdb.dwarf2/typeddwarf.exp: check value of w at typeddwarf.c:73
FAIL: gdb.dwarf2/typeddwarf.exp: check value of x at typeddwarf.c:73
FAIL: gdb.dwarf2/typeddwarf.exp: check value of y at typeddwarf.c:73
FAIL: gdb.dwarf2/typeddwarf.exp: check value of z at typeddwarf.c:73
Enabling "maint set target-non-stop on" implies displaced stepping
enabled as well, and it's the latter that's to blame here. We can see
the same failures with "maint set target-non-stop off + set displaced
on".
Diffing (good/bad) gdb.log for callframecfa.exp shows:
@@ -99,29 +99,29 @@ Breakpoint 2 at 0x80481b0: file q.c, lin
continue
Continuing.
-Breakpoint 2, func (arg=77) at q.c:2
+Breakpoint 2, func (arg=52301) at q.c:2
2 in q.c
(gdb) PASS: gdb.dwarf2/callframecfa.exp: continue to breakpoint: continue to breakpoint for call-frame-cfa
display arg
-1: arg = 77
-(gdb) PASS: gdb.dwarf2/callframecfa.exp: set display for call-frame-cfa
+1: arg = 52301
+(gdb) FAIL: gdb.dwarf2/callframecfa.exp: set display for call-frame-cfa
The problem is here, when setting up the func call:
Breakpoint 1, main (argc=-13345, argv=0x0) at q.c:7
7 in q.c
(gdb) disassemble
Dump of assembler code for function main:
0x080481bb <+0>: push %ebp
0x080481bc <+1>: mov %esp,%ebp
0x080481be <+3>: sub $0x4,%esp
=> 0x080481c1 <+6>: movl $0x4d,(%esp)
0x080481c8 <+13>: call 0x80481b0 <func>
0x080481cd <+18>: leave
0x080481ce <+19>: ret
End of assembler dump.
(gdb) disassemble /r
Dump of assembler code for function main:
0x080481bb <+0>: 55 push %ebp
0x080481bc <+1>: 89 e5 mov %esp,%ebp
0x080481be <+3>: 83 ec 04 sub $0x4,%esp
=> 0x080481c1 <+6>: c7 04 24 4d 00 00 00 movl $0x4d,(%esp)
0x080481c8 <+13>: e8 e3 ff ff ff call 0x80481b0 <func>
0x080481cd <+18>: c9 leave
0x080481ce <+19>: c3 ret
End of assembler dump.
Note the breakpoint at main is set at 0x080481c1. Right at the
instruction that sets up func's argument. Executing that instruction
should write 0x4d to the address pointed at by $esp. However, if we
stepi, the program manages to write 52301/0xcc4d there instead (0xcc
is int3, the x86 breakpoint instruction), because the breakpoint
address is 4 bytes inside the scratch pad location, which is
0x080481bd:
(gdb) p 0x080481c1 - 0x080481bd
$1 = 4
IOW, instead of executing:
"c7 04 24 4d 00 00 00" [ movl $0x4d,(%esp) ]
the inferior executes:
"c7 04 24 4d cc 00 00" [ movl $0xcc4d,(%esp) ]
gdb/ChangeLog:
2015-10-30 Pedro Alves <palves@redhat.com>
* breakpoint.c (breakpoint_in_range_p)
(breakpoint_location_address_range_overlap): New functions.
* breakpoint.h (breakpoint_in_range_p): New declaration.
* infrun.c (displaced_step_prepare_throw): If there's a breakpoint
in the scratch pad range, don't displaced step.
|
|
This adds an object oriented replacement for the "struct continuation"
mechanism, and converts the stepping commands (step, next, stepi,
nexti) and the "finish" commands to use it.
It adds a new thread "class" (struct thread_fsm) that contains the
necessary info and callbacks to manage the state machine of a thread's
execution command.
This allows getting rid of some hacks. E.g., in fetch_inferior_event
and normal_stop we no longer need to know whether a thread is doing a
multi-step (e.g., step N). This effectively makes the
intermediate_continuations unused -- they'll be garbage collected in a
separate patch. (They were never a proper abstraction, IMO. See how
fetch_inferior_event needs to check step_multi before knowing whether
to call INF_EXEC_CONTINUE or INF_EXEC_COMPLETE.)
The target async vs !async uiout hacks in mi_on_normal_stop go away
too.
print_stop_event is no longer called from normal_stop. Instead it is
now called from within each interpreter's normal_stop observer. This
clears the path to make each interpreter print a stop event the way it
sees fit. Currently we have some hacks in common code to
differenciate CLI vs TUI vs MI around this area.
The "finish" command's FSM class stores the return value plus that
value's position in the value history, so that those can be printed to
both MI and CLI's streams. This fixes the CLI "finish" command when
run from MI -- it now also includes the function's return value in the
CLI stream:
(gdb)
~"callee3 (strarg=0x400730 \"A string argument.\") at src/gdb/testsuite/gdb.mi/basics.c:35\n"
~"35\t}\n"
+~"Value returned is $1 = 0\n"
*stopped,reason="function-finished",frame=...,gdb-result-var="$1",return-value="0",thread-id="1",stopped-threads="all",core="0"
-FAIL: gdb.mi/mi-cli.exp: CLI finish: check CLI output
+PASS: gdb.mi/mi-cli.exp: CLI finish: check CLI output
gdb/ChangeLog:
2015-09-09 Pedro Alves <palves@redhat.com>
* Makefile.in (COMMON_OBS): Add thread-fsm.o.
* breakpoint.c (handle_jit_event): Print debug output.
(bpstat_what): Split event callback handling to ...
(bpstat_run_callbacks): ... this new function.
(momentary_bkpt_print_it): No longer handle bp_finish here.
* breakpoint.h (bpstat_run_callbacks): Declare.
* gdbthread.h (struct thread_info) <step_multi>: Delete field.
<thread_fsm>: New field.
(thread_cancel_execution_command): Declare.
* infcmd.c: Include thread-fsm.h.
(struct step_command_fsm): New.
(step_command_fsm_ops): New global.
(new_step_command_fsm, step_command_fsm_prepare): New functions.
(step_1): Adjust to use step_command_fsm_prepare and
prepare_one_step.
(struct step_1_continuation_args): Delete.
(step_1_continuation): Delete.
(step_command_fsm_should_stop): New function.
(step_once): Delete.
(step_command_fsm_clean_up, step_command_fsm_async_reply_reason)
(prepare_one_step): New function, based on step_once.
(until_next_command): Remove step_multi reference.
(struct return_value_info): New.
(print_return_value): Rename to ...
(print_return_value_1): ... this. New struct return_value_info
parameter. Adjust.
(print_return_value): Reimplement as wrapper around
print_return_value_1.
(struct finish_command_fsm): New.
(finish_command_continuation): Delete.
(finish_command_fsm_ops): New global.
(new_finish_command_fsm, finish_command_fsm_should_stop): New
functions.
(finish_command_fsm_clean_up, finish_command_fsm_return_value):
New.
(finish_command_continuation_free_arg): Delete.
(finish_command_fsm_async_reply_reason): New.
(finish_backward, finish_forward): Change symbol parameter to a
finish_command_fsm. Adjust.
(finish_command): Create a finish_command_fsm. Adjust.
* infrun.c: Include "thread-fsm.h".
(clear_proceed_status_thread): Delete the thread's FSM.
(infrun_thread_stop_requested_callback): Cancel the thread's
execution command.
(clean_up_just_stopped_threads_fsms): New function.
(fetch_inferior_event): Handle the event_thread's should_stop
method saying the command isn't done yet.
(process_event_stop_test): Run breakpoint callbacks here.
(print_stop_event): Rename to ...
(print_stop_location): ... this.
(restore_current_uiout_cleanup): New function.
(print_stop_event): Reimplement.
(normal_stop): No longer notify the end_stepping_range observers
here handle "step N" nor "finish" here. No longer call
print_stop_event here.
* infrun.h (struct return_value_info): Forward declare.
(print_return_value): Declare.
(print_stop_event): Change prototype.
* thread-fsm.c: New file.
* thread-fsm.h: New file.
* thread.c: Include "thread-fsm.h".
(thread_cancel_execution_command): New function.
(clear_thread_inferior_resources): Call it.
* cli/cli-interp.c (cli_on_normal_stop): New function.
(cli_interpreter_init): Install cli_on_normal_stop as normal_stop
observer.
* mi/mi-interp.c: Include "thread-fsm.h".
(restore_current_uiout_cleanup): Delete.
(mi_on_normal_stop): If the thread has an FSM associated, and it
finished, ask it for the async-reply-reason to print. Always call
print_stop_event here, regardless of the top-level interpreter.
Check bpstat_what to tell whether an asynchronous breakpoint hit
triggered.
* tui/tui-interp.c (tui_on_normal_stop): New function.
(tui_init): Install tui_on_normal_stop as normal_stop observer.
gdb/testsuite/ChangeLog:
2015-09-09 Pedro Alves <palves@redhat.com>
* gdb.mi/mi-cli.exp: Add CLI finish tests.
|
|
This patch converts the code base to use the new struct event_location
API being introduced. This patch preserves the current functionality and
adds no new features.
The "big picture" API usage introduced by this patch may be illustrated
with a simple exmaple. Where previously developers would write:
void
my_command (char *arg, int from_tty)
{
create_breakpoint (..., arg, ...);
...
}
one now uses:
void
my_command (char *arg, int from_tty)
{
struct event_locaiton *location;
struct cleanup *back_to;
location = string_to_event_locaiton (&arg, ...);
back_to = make_cleanup_delete_event_location (location);
create_breakpoint (..., location, ...);
do_cleanups (back_to);
}
Linespec-decoding functions (now called location-decoding) such as
decode_line_full no longer skip argument pointers over processed input.
That functionality has been moved into string_to_event_location as
demonstrated above.
gdb/ChangeLog
* ax-gdb.c: Include location.h.
(agent_command_1) Use linespec location instead of address
string.
* break-catch-throw.c: Include location.h.
(re_set_exception_catchpoint): Use linespec locations instead
of address strings.
* breakpoint.c: Include location.h.
(create_overlay_event_breakpoint, create_longjmp_master_breakpoint)
(create_std_terminate_master_breakpoint)
(create_exception_master_breakpoint, update_breakpoints_after_exec):
Use linespec location instead of address string.
(print_breakpoint_location): Use locations and
event_location_to_string.
Print extra_string for pending locations for non-MI streams.
(print_one_breakpoint_location): Use locations and
event_location_to_string.
(init_raw_breakpoint_without_location): Initialize b->location.
(create_thread_event_breakpoint): Use linespec location instead of
address string.
(init_breakpoint_sal): Likewise.
Only save extra_string if it is non-NULL and not the empty string.
Use event_location_to_string instead of `addr_string'.
Constify `p' and `endp'.
Use skip_spaces_const/skip_space_const instead of non-const versions.
Copy the location into the breakpoint.
If LOCATION is NULL, save the breakpoint address as a linespec location
instead of an address string.
(create_breakpoint_sal): Change `addr_string' parameter to a struct
event_location. All uses updated.
(create_breakpoints_sal): Likewise for local variable `addr_string'.
(parse_breakpoint_sals): Use locations instead of address strings.
Remove check for empty linespec with conditional.
Refactor.
(decode_static_tracepoint_spec): Make argument const and update
function.
(create_breakpoint): Change `arg' to a struct event_location and
rename.
Remove `copy_arg' and `addr_start'.
If EXTRA_STRING is empty, set it to NULL.
Don't populate `canonical' for pending breakpoints.
Pass `extra_string' to find_condition_and_thread.
Clear `extra_string' if `rest' was NULL.
Do not error with "garbage after location" if setting a dprintf
breakpoint.
Copy the location into the breakpoint instead of an address string.
(break_command_1): Use string_to_event_location and pass this to
create_breakpoint instead of an address string.
Check against `arg_cp' for a probe linespec.
(dprintf_command): Use string_to_event_location and pass this to
create_breakpoint instead of an address string.
Throw an exception if no format string was specified.
(print_recreate_ranged_breakpoint): Use event_location_to_string
instead of address strings.
(break_range_command, until_break_command)
(init_ada_exception_breakpoint): Use locations instead
of address strings.
(say_where): Print out extra_string for pending locations.
(base_breakpoint_dtor): Delete `location' and `location_range_end' of
the breakpoint.
(base_breakpoint_create_sals_from_location): Use struct event_location
instead of address string.
Remove `addr_start' and `copy_arg' parameters.
(base_breakpoint_decode_location): Use struct event_location instead of
address string.
(bkpt_re_set): Use locations instead of address strings.
Use event_location_empty_p to check for unset location.
(bkpt_print_recreate): Use event_location_to_string instead of
an address string.
Print out extra_string for pending locations.
(bkpt_create_sals_from_location, bkpt_decode_location)
(bkpt_probe_create_sals_from_location): Use struct event_location
instead of address string.
(bkpt_probe_decode_location): Use struct event_location instead of
address string.
(tracepoint_print_recreate): Use event_location_to_string to
recreate the tracepoint.
(tracepoint_create_sals_from_location, tracepoint_decode_location)
(tracepoint_probe_create_sals_from_location)
(tracepoint_probe_decode_location): Use struct event_location
instead of address string.
(dprintf_print_recreate): Use event_location_to_string to recreate
the dprintf.
(dprintf_re_set): Remove check for valid/missing format string.
(strace_marker_create_sals_from_location)
(strace_marker_create_breakpoints_sal, strace_marker_decode_location)
(update_static_tracepoint): Use struct event_location instead of
address string.
(location_to_sals): Likewise.
Pass `extra_string' to find_condition_and_thread.
For newly resolved pending breakpoint locations, clear the location's
string representation.
Assert that the breakpoint's condition string is NULL when
condition_not_parsed.
(breakpoint_re_set_default, create_sals_from_location_default)
(decode_location_default, trace_command, ftrace_command)
(strace_command, create_tracepoint_from_upload): Use locations
instead of address strings.
* breakpoint.h (struct breakpoint_ops) <create_sals_from_location>:
Use struct event_location instead of address string.
Update all uses.
<decode_location>: Likewise.
(struct breakpoint) <addr_string>: Change to struct event_location
and rename `location'.
<addr_string_range_end>: Change to struct event_location and rename
`location_range_end'.
(create_breakpoint): Use struct event_location instead of address
string.
* cli/cli-cmds.c: Include location.h.
(edit_command, list_command): Use locations instead of address strings.
* elfread.c: Include location.h.
(elf_gnu_ifunc_resolver_return_stop): Use event_location_to_string.
* guile/scm-breakpoint.c: Include location.h.
(bpscm_print_breakpoint_smob): Use event_location_to_string.
(gdbscm_register_breakpoint): Use locations instead of address
strings.
* linespec.c: Include location.h.
(struct ls_parser) <stream>: Change to const char *.
(PARSER_STREAM): Update.
(lionespec_lexer_lex_keyword): According to find_condition_and_thread,
keywords must be followed by whitespace.
(canonicalize_linespec): Save a linespec location into `canonical'.
Save a canonical linespec into `canonical'.
(parse_linespec): Change `argptr' to const char * and rename `arg'.
All uses updated.
Update function description.
(linespec_parser_new): Initialize `parser'.
Update initialization of parsing stream.
(event_location_to_sals): New function.
(decode_line_full): Change `argptr' to a struct event_location and
rename it `location'.
Use locations instead of address strings.
Call event_location_to_sals instead of parse_linespec.
(decode_line_1): Likewise.
(decode_line_with_current_source, decode_line_with_last_displayed)
Use locations instead of address strings.
(decode_objc): Likewise.
Change `argptr' to const char * and rename `arg'.
(destroy_linespec_result): Delete the linespec result's location
instead of freeing the address string.
* linespec.h (struct linespec_result) <addr_string>: Change to
struct event_location and rename to ...
<location>: ... this.
(decode_line_1, decode_line_full): Change `argptr' to struct
event_location. All callers updated.
* mi/mi-cmd-break.c: Include language.h, location.h, and linespec.h.
(mi_cmd_break_insert_1): Use locations instead of address strings.
Throw an error if there was "garbage" at the end of the specified
linespec.
* probe.c: Include location.h.
(parse_probes): Change `argptr' to struct event_location.
Use event locations instead of address strings.
* probe.h (parse_probes): Change `argptr' to struct event_location.
* python/py-breakpoint.c: Include location.h.
(bppy_get_location): Constify local variable `str'.
Use event_location_to_string.
(bppy_init): Use locations instead of address strings.
* python/py-finishbreakpoint.c: Include location.h.
(bpfinishpy_init): Remove local variable `addr_str'.
Use locations instead of address strings.
* python/python.c: Include location.h.
(gdbpy_decode_line): Use locations instead of address strings.
* remote.c: Include location.h.
(remote_download_tracepoint): Use locations instead of address
strings.
* spu-tdep.c: Include location.h.
(spu_catch_start): Remove local variable `buf'.
Use locations instead of address strings.
* tracepoint.c: Include location.h.
(scope_info): Use locations instead of address strings.
(encode_source_string): Constify parameter `src'.
* tracepoint.h (encode_source_string): Likewise.
gdb/testsuite/ChangeLog
* gdb.base/dprintf-pending.exp: Update dprintf "without format"
test.
Add tests for missing ",FMT" and ",".
|
