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2019-10-26[gdb] Fix more typos in comments (2)Tom de Vries1-1/+1
Fix typos in comments. NFC. Tested on x86_64-linux. gdb/ChangeLog: 2019-10-26 Tom de Vries <tdevries@suse.de> * aarch64-linux-tdep.c: Fix typos in comments. * aarch64-tdep.c: Same. * ada-lang.c: Same. * amd64-nat.c: Same. * arc-tdep.c: Same. * arch/aarch64-insn.c: Same. * block.c: Same. * breakpoint.h: Same. * btrace.h: Same. * c-varobj.c: Same. * cli/cli-decode.c: Same. * cli/cli-script.c: Same. * cli/cli-utils.h: Same. * coff-pe-read.c: Same. * coffread.c: Same. * compile/compile-cplus-symbols.c: Same. * compile/compile-object-run.c: Same. * completer.c: Same. * corelow.c: Same. * cp-support.c: Same. * demangle.c: Same. * dwarf-index-write.c: Same. * dwarf2-frame.c: Same. * dwarf2-frame.h: Same. * eval.c: Same. * frame-base.h: Same. * frame.h: Same. * gdbcmd.h: Same. * gdbtypes.h: Same. * gnu-nat.c: Same. * guile/scm-objfile.c: Same. * i386-tdep.c: Same. * i386-tdep.h: Same. * infcall.c: Same. * infcall.h: Same. * linux-nat.c: Same. * m68k-tdep.c: Same. * macroexp.c: Same. * memattr.c: Same. * mi/mi-cmd-disas.c: Same. * mi/mi-getopt.h: Same. * mi/mi-main.c: Same. * minsyms.c: Same. * nat/aarch64-sve-linux-sigcontext.h: Same. * objfiles.h: Same. * ppc-linux-nat.c: Same. * ppc-linux-tdep.c: Same. * ppc-tdep.h: Same. * progspace.h: Same. * prologue-value.h: Same. * python/py-evtregistry.c: Same. * python/py-instruction.h: Same. * record-btrace.c: Same. * record-full.c: Same. * remote.c: Same. * rs6000-tdep.c: Same. * ser-tcp.c: Same. * sol-thread.c: Same. * sparc-sol2-tdep.c: Same. * sparc64-tdep.c: Same. * stabsread.c: Same. * symfile.c: Same. * symtab.h: Same. * target.c: Same. * tracepoint.c: Same. * tui/tui-data.h: Same. * tui/tui-io.c: Same. * tui/tui-win.c: Same. * tui/tui.c: Same. * unittests/rsp-low-selftests.c: Same. * user-regs.h: Same. * utils.c: Same. * utils.h: Same. * valarith.c: Same. * valops.c: Same. * valprint.c: Same. * valprint.h: Same. * value.c: Same. * value.h: Same. * varobj.c: Same. * x86-nat.h: Same. * xtensa-tdep.c: Same. gdb/gdbserver/ChangeLog: 2019-10-26 Tom de Vries <tdevries@suse.de> * linux-aarch64-low.c: Fix typos in comments. * linux-arm-low.c: Same. * linux-low.c: Same. * linux-ppc-low.c: Same. * proc-service.c: Same. * regcache.h: Same. * server.c: Same. * tracepoint.c: Same. * win32-low.c: Same. gdb/stubs/ChangeLog: 2019-10-26 Tom de Vries <tdevries@suse.de> * ia64vms-stub.c: Fix typos in comments. * m32r-stub.c: Same. * m68k-stub.c: Same. * sh-stub.c: Same. gdb/testsuite/ChangeLog: 2019-10-26 Tom de Vries <tdevries@suse.de> * gdb.base/bigcore.c: Fix typos in comments. * gdb.base/ctf-ptype.c: Same. * gdb.base/long_long.c: Same. * gdb.dwarf2/dw2-op-out-param.S: Same. * gdb.python/py-evthreads.c: Same. * gdb.reverse/i387-stack-reverse.c: Same. * gdb.trace/tfile.c: Same. * lib/compiler.c: Same. * lib/compiler.cc: Same. Change-Id: I8573d84a577894270179ae30f46c48d806fc1beb
2019-09-18Change boolean options to bool instead of intChristian Biesinger1-4/+4
This is for add_setshow_boolean_cmd as well as the gdb::option interface. gdb/ChangeLog: 2019-09-17 Christian Biesinger <cbiesinger@google.com> * ada-lang.c (ada_ignore_descriptive_types_p): Change to bool. (print_signatures): Likewise. (trust_pad_over_xvs): Likewise. * arch/aarch64-insn.c (aarch64_debug): Likewise. * arch/aarch64-insn.h (aarch64_debug): Likewise. * arm-linux-nat.c (arm_apcs_32): Likewise. * arm-linux-tdep.c (arm_apcs_32): Likewise. * arm-nbsd-nat.c (arm_apcs_32): Likewise. * arm-tdep.c (arm_debug): Likewise. (arm_apcs_32): Likewise. * auto-load.c (debug_auto_load): Likewise. (auto_load_gdb_scripts): Likewise. (global_auto_load): Likewise. (auto_load_local_gdbinit): Likewise. (auto_load_local_gdbinit_loaded): Likewise. * auto-load.h (global_auto_load): Likewise. (auto_load_local_gdbinit): Likewise. (auto_load_local_gdbinit_loaded): Likewise. * breakpoint.c (disconnected_dprintf): Likewise. (breakpoint_proceeded): Likewise. (automatic_hardware_breakpoints): Likewise. (always_inserted_mode): Likewise. (target_exact_watchpoints): Likewise. (_initialize_breakpoint): Update. * breakpoint.h (target_exact_watchpoints): Change to bool. * btrace.c (maint_btrace_pt_skip_pad): Likewise. * cli/cli-cmds.c (trace_commands): Likewise. * cli/cli-cmds.h (trace_commands): Likewise. * cli/cli-decode.c (add_setshow_boolean_cmd): Change int* argument to bool*. * cli/cli-logging.c (logging_overwrite): Change to bool. (logging_redirect): Likewise. (debug_redirect): Likewise. * cli/cli-option.h (option_def) <boolean>: Change return type to bool*. (struct boolean_option_def) <get_var_address_cb_>: Change return type to bool. <boolean_option_def>: Update. (struct flag_option_def): Change default type of Context to bool from int. <flag_option_def>: Change return type of var_address_cb_ to bool*. * cli/cli-setshow.c (do_set_command): Cast to bool* instead of int*. (get_setshow_command_value_string): Likewise. * cli/cli-style.c (cli_styling): Change to bool. (source_styling): Likewise. * cli/cli-style.h (source_styling): Likewise. (cli_styling): Likewise. * cli/cli-utils.h (struct qcs_flags) <quiet, cont, silent>: Change to bool. * command.h (var_types): Update comment. (add_setshow_boolean_cmd): Change int* var argument to bool*. * compile/compile-cplus-types.c (debug_compile_cplus_types): Change to bool. (debug_compile_cplus_scopes): Likewise. * compile/compile-internal.h (compile_debug): Likewise. * compile/compile.c (compile_debug): Likewise. (struct compile_options) <raw>: Likewise. * cp-support.c (catch_demangler_crashes): Likewise. * cris-tdep.c (usr_cmd_cris_version_valid): Likewise. (usr_cmd_cris_dwarf2_cfi): Likewise. * csky-tdep.c (csky_debug): Likewise. * darwin-nat.c (enable_mach_exceptions): Likewise. * dcache.c (dcache_enabled_p): Likewise. * defs.h (info_verbose): Likewise. * demangle.c (demangle): Likewise. (asm_demangle): Likewise. * dwarf-index-cache.c (debug_index_cache): Likewise. * dwarf2-frame.c (dwarf2_frame_unwinders_enabled_p): Likewise. * dwarf2-frame.h (dwarf2_frame_unwinders_enabled_p): Likewise. * dwarf2read.c (check_physname): Likewise. (use_deprecated_index_sections): Likewise. (dwarf_always_disassemble): Likewise. * eval.c (overload_resolution): Likewise. * event-top.c (set_editing_cmd_var): Likewise. (exec_done_display_p): Likewise. * event-top.h (set_editing_cmd_var): Likewise. (exec_done_display_p): Likewise. * exec.c (write_files): Likewise. * fbsd-nat.c (debug_fbsd_lwp): Likewise (debug_fbsd_nat): Likewise. * frame.h (struct frame_print_options) <print_raw_frame_arguments>: Likewise. (struct set_backtrace_options) <backtrace_past_main>: Likewise. <backtrace_past_entry> Likewise. * gdb-demangle.h (demangle): Likewise. (asm_demangle): Likewise. * gdb_bfd.c (bfd_sharing): Likewise. * gdbcore.h (write_files): Likewise. * gdbsupport/common-debug.c (show_debug_regs): Likewise. * gdbsupport/common-debug.h (show_debug_regs): Likewise. * gdbthread.h (print_thread_events): Likewise. * gdbtypes.c (opaque_type_resolution): Likewise. (strict_type_checking): Likewise. * gnu-nat.c (gnu_debug_flag): Likewise. * guile/scm-auto-load.c (auto_load_guile_scripts): Likewise. * guile/scm-param.c (pascm_variable): Add boolval. (add_setshow_generic): Update. (pascm_param_value): Update. (pascm_set_param_value_x): Update. * hppa-tdep.c (hppa_debug): Change to bool.. * infcall.c (may_call_functions_p): Likewise. (coerce_float_to_double_p): Likewise. (unwind_on_signal_p): Likewise. (unwind_on_terminating_exception_p): Likewise. * infcmd.c (startup_with_shell): Likewise. * inferior.c (print_inferior_events): Likewise. * inferior.h (startup_with_shell): Likewise. (print_inferior_events): Likewise. * infrun.c (step_stop_if_no_debug): Likewise. (detach_fork): Likewise. (debug_displaced): Likewise. (disable_randomization): Likewise. (non_stop): Likewise. (non_stop_1): Likewise. (observer_mode): Likewise. (observer_mode_1): Likewise. (set_observer_mode): Update. (sched_multi): Change to bool. * infrun.h (debug_displaced): Likewise. (sched_multi): Likewise. (step_stop_if_no_debug): Likewise. (non_stop): Likewise. (disable_randomization): Likewise. * linux-tdep.c (use_coredump_filter): Likewise. (dump_excluded_mappings): Likewise. * linux-thread-db.c (auto_load_thread_db): Likewise. (check_thread_db_on_load): Likewise. * main.c (captured_main_1): Update. * maint-test-options.c (struct test_options_opts) <flag_opt, xx1_opt, xx2_opt, boolean_opt>: Change to bool. * maint-test-settings.c (maintenance_test_settings_boolean): Likewise. * maint.c (maintenance_profile_p): Likewise. (per_command_time): Likewise. (per_command_space): Likewise. (per_command_symtab): Likewise. * memattr.c (inaccessible_by_default): Likewise. * mi/mi-main.c (mi_async): Likewise. (mi_async_1): Likewise. * mips-tdep.c (mips64_transfers_32bit_regs_p): Likewise. * nat/fork-inferior.h (startup_with_shell): Likewise. * nat/linux-namespaces.c (debug_linux_namespaces): Likewise. * nat/linux-namespaces.h (debug_linux_namespaces): Likewise. * nios2-tdep.c (nios2_debug): Likewise. * or1k-tdep.c (or1k_debug): Likewise. * parse.c (parser_debug): Likewise. * parser-defs.h (parser_debug): Likewise. * printcmd.c (print_symbol_filename): Likewise. * proc-api.c (procfs_trace): Likewise. * python/py-auto-load.c (auto_load_python_scripts): Likewise. * python/py-param.c (union parmpy_variable): Add "bool boolval" field. (set_parameter_value): Update. (add_setshow_generic): Update. * python/py-value.c (copy_py_bool_obj): Change argument from int* to bool*. * python/python.c (gdbpy_parameter_value): Cast to bool* instead of int*. * ravenscar-thread.c (ravenscar_task_support): Change to bool. * record-btrace.c (record_btrace_target::store_registers): Update. * record-full.c (record_full_memory_query): Change to bool. (record_full_stop_at_limit): Likewise. * record-full.h (record_full_memory_query): Likewise. * remote-notif.c (notif_debug): Likewise. * remote-notif.h (notif_debug): Likewise. * remote.c (use_range_stepping): Likewise. (interrupt_on_connect): Likewise. (remote_break): Likewise. * ser-tcp.c (tcp_auto_retry): Likewise. * ser-unix.c (serial_hwflow): Likewise. * skip.c (debug_skip): Likewise. * solib-aix.c (solib_aix_debug): Likewise. * spu-tdep.c (spu_stop_on_load_p): Likewise. (spu_auto_flush_cache_p): Likewise. * stack.c (struct backtrace_cmd_options) <full, no_filters, hide>: Likewise. (struct info_print_options) <quiet>: Likewise. * symfile-debug.c (debug_symfile): Likewise. * symfile.c (auto_solib_add): Likewise. (separate_debug_file_debug): Likewise. * symfile.h (auto_solib_add): Likewise. (separate_debug_file_debug): Likewise. * symtab.c (basenames_may_differ): Likewise. (struct filename_partial_match_opts) <dirname, basename>: Likewise. (struct info_print_options) <quiet, exclude_minsyms>: Likewise. (struct info_types_options) <quiet>: Likewise. * symtab.h (demangle): Likewise. (basenames_may_differ): Likewise. * target-dcache.c (stack_cache_enabled_1): Likewise. (code_cache_enabled_1): Likewise. * target.c (trust_readonly): Likewise. (may_write_registers): Likewise. (may_write_memory): Likewise. (may_insert_breakpoints): Likewise. (may_insert_tracepoints): Likewise. (may_insert_fast_tracepoints): Likewise. (may_stop): Likewise. (auto_connect_native_target): Likewise. (target_stop_and_wait): Update. (target_async_permitted): Change to bool. (target_async_permitted_1): Likewise. (may_write_registers_1): Likewise. (may_write_memory_1): Likewise. (may_insert_breakpoints_1): Likewise. (may_insert_tracepoints_1): Likewise. (may_insert_fast_tracepoints_1): Likewise. (may_stop_1): Likewise. * target.h (target_async_permitted): Likewise. (may_write_registers): Likewise. (may_write_memory): Likewise. (may_insert_breakpoints): Likewise. (may_insert_tracepoints): Likewise. (may_insert_fast_tracepoints): Likewise. (may_stop): Likewise. * thread.c (struct info_threads_opts) <show_global_ids>: Likewise. (make_thread_apply_all_options_def_group): Change argument from int* to bool*. (thread_apply_all_command): Update. (print_thread_events): Change to bool. * top.c (confirm): Likewise. (command_editing_p): Likewise. (history_expansion_p): Likewise. (write_history_p): Likewise. (info_verbose): Likewise. * top.h (confirm): Likewise. (history_expansion_p): Likewise. * tracepoint.c (disconnected_tracing): Likewise. (circular_trace_buffer): Likewise. * typeprint.c (print_methods): Likewise. (print_typedefs): Likewise. * utils.c (debug_timestamp): Likewise. (sevenbit_strings): Likewise. (pagination_enabled): Likewise. * utils.h (sevenbit_strings): Likewise. (pagination_enabled): Likewise. * valops.c (overload_resolution): Likewise. * valprint.h (struct value_print_options) <prettyformat_arrays, prettyformat_structs, vtblprint, unionprint, addressprint, objectprint, stop_print_at_null, print_array_indexes, deref_ref, static_field_print, pascal_static_field_print, raw, summary, symbol_print, finish_print>: Likewise. * windows-nat.c (new_console): Likewise. (cygwin_exceptions): Likewise. (new_group): Likewise. (debug_exec): Likewise. (debug_events): Likewise. (debug_memory): Likewise. (debug_exceptions): Likewise. (useshell): Likewise. * windows-tdep.c (maint_display_all_tib): Likewise. * xml-support.c (debug_xml): Likewise.
2019-08-07Make struct frame_arg self-managingTom Tromey1-4/+4
This changes struct frame_arg to be self-managing and then fixes the various users. Tested by the buildbot. gdb/ChangeLog 2019-08-07 Tom Tromey <tromey@adacore.com> * stack.c (print_frame_arg, read_frame_local, read_frame_arg) (print_frame_args): Update. * python/py-framefilter.c (py_print_single_arg, enumerate_args): Update. * mi/mi-cmd-stack.c (list_arg_or_local): Update. * frame.h (struct frame_arg): Add initializers. <error>: Now a unique_xmalloc_ptr.
2019-08-07AArch64 pauth: Indicate unmasked addresses in backtraceAlan Hayward1-0/+9
Armv8.3-a Pointer Authentication causes the function return address to be obfuscated on entry to some functions. GDB must unmask the link register in order to produce a backtrace. The following patch adds markers of [PAC] to the bracktrace, to indicate which addresses needed unmasking. This includes the backtrace when using MI. For example, consider the following backtrace: (gdb) bt 0 0x0000000000400490 in puts@plt () 1 0x00000000004005dc in foo ("hello") at cbreak-lib.c:6 2 0x0000000000400604 [PAC] in bar () at cbreak-lib.c:12 3 0x0000000000400620 [PAC] in main2 () at cbreak.c:17 4 0x00000000004005b4 in main () at cbreak-3.c:10 The functions in cbreak-lib use pointer auth, which masks the return address to the previous function, causing the addresses of bar (in the library) and main2 (in the main binary) to require unmasking in order to unwind the backtrace. An extra bool is added alongside the prev_pc in the frame structure. At the point at which the link register is unmasked, the AArch64 port calls into frame to sets the bool. This is the most efficient way of doing it. The marker is also added to the python frame printer, which is always printed if set. The marker is not explicitly exposed to the python code. I expect this will potentially cause issues with some tests in the testsuite when Armv8.3 pointer authentication is used. This should be fixed up in the the future once real hardware is available for full testsuite testing. gdb/ChangeLog: * NEWS: Expand the Pointer Authentication entry. * aarch64-tdep.c (aarch64_frame_unmask_address): Rename from this. (aarch64_frame_unmask_lr): ... to this. (aarch64_prologue_prev_register, aarch64_dwarf2_prev_register): Call aarch64_frame_unmask_lr. * frame.c (struct frame_info): Add "masked" variable. (frame_set_previous_pc_masked) (frame_get_pc_masked): New functions. (fprint_frame): Check for masked pc. * frame.h (frame_set_previous_pc_masked) (frame_get_pc_masked): New declarations. * python/py-framefilter.c (py_print_frame): Check for masked pc. * stack.c (print_frame): Check for masked pc. gdb/doc/ChangeLog: * gdb.texinfo (AArch64 Pointer Authentication): New subsection.
2019-07-29Implement 'set print frame-info|frame-arguments presence'.Philippe Waroquiers1-9/+28
New settings allow to better control what frame information is printed. 'set print frame-info' allows to override the default frame information printed when a GDB command prints a frame. The backtrace command has a new option -frame-info to override this global setting. It is now possible to have very short frame information by using the new 'set print frame-arguments presence' and 'set print frame-info short-location'. Combined with 'set print address off', a backtrace will only show the essential information to see the function call chain, e.g.: (gdb) set print address off (gdb) set print frame-arguments presence (gdb) set print frame-info short-location (gdb) bt #0 break_me () #1 call_me (...) #2 main () (gdb) This is handy in particular for big backtraces with functions having many arguments. Python frame filter printing logic has been updated to respect the new setting in non MI mode. Also, the default frame information printed was inconsistent when backtrace was printing the frame information itself, or when the python frame filtering code was printing the frame information. This patch changes the default of python frame filtering to have a consistent behaviour regarding printed frame-information, whatever the presence/activity/matches of python filters. 2019-07-29 Philippe Waroquiers <philippe.waroquiers@skynet.be> * frame.h (enum print_what): New value 'SHORT_LOCATION', update comments. (print_frame_info_auto, print_frame_info_source_line, print_frame_info_location, print_frame_info_source_and_location, print_frame_info_location_and_address, print_frame_info_short_location): New declarations. (struct frame_print_options): New member print_frame_info. * extension.h (enum ext_lang_frame_args): New value CLI_PRESENCE. * stack.h (get_user_print_what_frame_info): New declaration. (frame_show_address): New declaration. * stack.c (print_frame_arguments_choices): New value 'presence'. (print_frame_info_auto, print_frame_info_source_line, print_frame_info_location, print_frame_info_source_and_location, print_frame_info_location_and_address, print_frame_info_short_location, print_frame_info_choices, print_frame_info_print_what): New definitions. (print_frame_args): Only print dots for args if print frame-arguments is 'presence'. (frame_print_option_defs): New element for "frame-info". (get_user_print_what_frame_info): New function. (frame_show_address): Make non static. Move comment to stack.h. (print_frame_info_to_print_what): New function. (print_frame_info): Update comment. Use fp_opts.print_frame_info to decide what to print. (backtrace_command_1): Handle the new print_frame_arguments_presence value. (_initialize_stack): Call add_setshow_enum_cmd for frame-info. * python/py-framefilter.c (py_print_args): Handle CLI_PRESENCE. (py_print_frame): In non-mi mode, use LOCATION as default for print_what, similarly to frame information printed directly by backtrace command. Handle frame-info user option in non MI mode.
2019-06-13Make "backtrace" support -OPT optionsPedro Alves1-3/+52
This adds support for comand options to the "backtrace" command. We'll get: (gdb) bt - -entry-values -hide -past-main -frame-arguments -no-filters -raw-frame-arguments -full -past-entry ~~~~ (gdb) help backtrace Print backtrace of all stack frames, or innermost COUNT frames. Usage: backtrace [OPTION]... [QUALIFIER]... [COUNT | -COUNT] Options: -entry-values no|only|preferred|if-needed|both|compact|default Set printing of function arguments at function entry GDB can sometimes determine the values of function arguments at entry, in addition to their current values. This option tells GDB whether to print the current value, the value at entry (marked as val@entry), or both. Note that one or both of these values may be <optimized out>. -frame-arguments all|scalars|none Set printing of non-scalar frame arguments -raw-frame-arguments [on|off] Set whether to print frame arguments in raw form. If set, frame arguments are printed in raw form, bypassing any pretty-printers for that value. -past-main [on|off] Set whether backtraces should continue past "main". Normally the caller of "main" is not of interest, so GDB will terminate the backtrace at "main". Set this if you need to see the rest of the stack trace. -past-entry [on|off] Set whether backtraces should continue past the entry point of a program. Normally there are no callers beyond the entry point of a program, so GDB will terminate the backtrace there. Set this if you need to see the rest of the stack trace. -full Print values of local variables. -no-filters Prohibit frame filters from executing on a backtrace. -hide Causes Python frame filter elided frames to not be printed. For backward compatibility, the following qualifiers are supported: full - same as -full option. no-filters - same as -no-filters option. hide - same as -hide. With a negative COUNT, print outermost -COUNT frames. ~~~~ Implementation wise, this: - Moves relevant options/settings globals to structures. - Tweaks a number of functions to pass down references to such structures. - Adds option_def structures describing the options/settings. - Makes backtrace_command parse the options, with gdb::option::process_options. - Tweaks "backtrace"'s help to describe the new options. - Adds testcases. Note that backtrace is a PROCESS_OPTIONS_UNKNOWN_IS_OPERAND command, because of the "-COUNT" argument. The COUNT/-COUNT argument is currently parsed as an expression. I considered whether it would be prudent here to require "--", but concluded that the risk of causing a significant breakage here is much lower compared to "print", since printing the expression is not the whole point of the "backtrace" command. Seems OK to me to require typing "backtrace -past-main -- -p" if the user truly wants to refer to the negative of a backtrace count stored in an inferior variable called "p". gdb/ChangeLog: 2019-06-13 Pedro Alves <palves@redhat.com> * frame.c: Include "cli/cli-option.h. (user_set_backtrace_options): New. (backtrace_past_main, backtrace_past_entry, backtrace_limit): Delete. (get_prev_frame): Adjust. (boolean_option_def, uinteger_option_def) (set_backtrace_option_defs): New. (_initialize_frame): Adjust and use gdb::option::add_setshow_cmds_for_options to install "set backtrace past-main" and "set backtrace past-entry". * frame.h: Include "cli/cli-option.h". (struct frame_print_options): Forward declare. (print_frame_arguments_all, print_frame_arguments_scalars) (print_frame_arguments_none): Declare. (print_entry_values): Delete declaration. (struct frame_print_options, user_frame_print_options): New. (struct set_backtrace_options): New. (set_backtrace_option_defs, user_set_backtrace_options): Declare. * mi/mi-cmd-stack.c (mi_cmd_stack_list_frames) (mi_cmd_stack_list_locals, mi_cmd_stack_list_args) (mi_cmd_stack_list_variables): Pass down USER_FRAME_PRINT_OPTIONS. (list_args_or_locals): Add frame_print_options parameter. (mi_cmd_stack_info_frame): Pass down USER_FRAME_PRINT_OPTIONS. * python/py-framefilter.c (enumerate_args): Pass down USER_FRAME_PRINT_OPTIONS. * stack.c: Include "cli/cli-option.h". (print_frame_arguments_all, print_frame_arguments_scalars) (print_frame_arguments_none): Declare. (print_raw_frame_arguments, print_entry_values): Delete. (user_frame_print_options): New. (boolean_option_def, enum_option_def, frame_print_option_defs): New. (struct backtrace_cmd_options): New. (bt_flag_option_def): New. (backtrace_command_option_defs): New. (print_stack_frame): Pass down USER_FRAME_PRINT_OPTIONS. (print_frame_arg, read_frame_arg, print_frame_args) (print_frame_info, print_frame): Add frame_print_options parameter and use it. (info_frame_command_core): Pass down USER_FRAME_PRINT_OPTIONS. (backtrace_command_1): Add frame_print_options and backtrace_cmd_options parameters and use them. (make_backtrace_options_def_group): New. (backtrace_command): Process command options with gdb::option::process_options. (backtrace_command_completer): New. (_initialize_stack): Extend "backtrace"'s help to mention supported options. Install completer for "backtrace". Install some settings commands with add_setshow_cmds_for_options. gdb/testsuite/ChangeLog: 2019-06-13 Pedro Alves <palves@redhat.com> * gdb.base/options.exp (test-backtrace): New. (top level): Call it.
2019-01-01Update copyright year range in all GDB files.Joel Brobecker1-1/+1
This commit applies all changes made after running the gdb/copyright.py script. Note that one file was flagged by the script, due to an invalid copyright header (gdb/unittests/basic_string_view/element_access/char/empty.cc). As the file was copied from GCC's libstdc++-v3 testsuite, this commit leaves this file untouched for the time being; a patch to fix the header was sent to gcc-patches first. gdb/ChangeLog: Update copyright year range in all GDB files.
2018-07-20Rename some frame unwind function parametersSimon Marchi1-8/+8
I am currently working with these functions, and though this renaming could help to reason about the code. Some functions take a frame and will return the value associated to that frame, others will return the value associated to the previous frame. Those usually conveniently contain "unwind" in their name, but naming the variable next_frame instead of frame helps remembering which frame we are dealing with. I also included a little typo fix at the top of frame.h. gdb/ChangeLog: * frame.c (frame_register_unwind): Change parameter name. (frame_unwind_register): Likewise. (frame_unwind_register_value): Likewise. (frame_unwind_register_signed): Likewise. (frame_unwind_register_unsigned): Likewise. * frame.h (frame_register_unwind): Likewise. (frame_unwind_register): Likewise. (frame_unwind_register_value): Likewise. (frame_unwind_register_signed): Likewise. (frame_unwind_register_unsigned): Likewise. (frame_unwind_arch): Likewise.
2018-05-24gdb: Restore selected frame in print_frame_local_varsAndrew Burgess1-0/+19
PR gdb/23203 reports 'bt full' causing the currently selected frame to change, this issue is fixed in this commit. Add a new class scoped_restore_selected_frame that saves and restores the selected frame. Make use of this in print_frame_local_vars to restore the selected frame on exit. gdb/ChangeLog: PR gdb/23203 * frame.c (scoped_restore_selected_frame::scoped_restore_selected_frame): Define. (scoped_restore_selected_frame::~scoped_restore_selected_frame): Define. * frame.h (class scoped_restore_selected_frame): New class. * stack.c (print_frame_local_vars): Remove catching and rethrowing of any exception, use scoped_restore_selected_frame to restore the frame instead. gdb/testsuite/ChangeLog: PR gdb/23203 * gdb.base/bt-selected-frame.c: New file. * gdb.base/bt-selected-frame.exp: New file. * lib/gdb.exp (get_current_frame_number): New function.
2018-02-21Class readonly_detached_regcacheYao Qi1-1/+2
This patch adds a new class (type) for readonly regcache, which is created via regcache::save. readonly_detached_regcache inherits readable_regcache. gdb: 2018-02-21 Yao Qi <yao.qi@linaro.org> * dummy-frame.c (dummy_frame_cache) <prev_regcache>: Use readonly_detached_regcache. (dummy_frame_prev_register): Use regcache->cooked_read. * frame.c (frame_save_as_regcache): Change return type. (frame_pop): Update. * frame.h (frame_save_as_regcache): Update declaration. * inferior.h (get_infcall_suspend_state_regcache): Update declaration. * infrun.c (infcall_suspend_state) <registers>: use readonly_detached_regcache. (save_infcall_suspend_state): Don't use regcache_dup. (get_infcall_suspend_state_regcache): Change return type. * linux-fork.c (struct fork_info) <savedregs>: Change to readonly_detached_regcache. <pc>: New field. (fork_save_infrun_state): Don't use regcache_dup. (info_checkpoints_command): Adjust. * mi/mi-main.c (register_changed_p): Update declaration. (mi_cmd_data_list_changed_registers): Use readonly_detached_regcache. (register_changed_p): Change parameter type to readonly_detached_regcache. * ppc-linux-tdep.c (ppu2spu_cache) <regcache>: Use readonly_detached_regcache. (ppu2spu_sniffer): Construct a new readonly_detached_regcache. * regcache.c (readonly_detached_regcache::readonly_detached_regcache): New. (regcache::save): Move it to reg_buffer. (regcache::restore): Change parameter type. (regcache_dup): Remove. * regcache.h (reg_buffer) <save>: New method. (readonly_detached_regcache): New class. * spu-tdep.c (spu2ppu_cache) <regcache>: Use readonly_detached_regcache. (spu2ppu_sniffer): Construct a new readonly_detached_regcache.
2018-01-02Update copyright year range in all GDB filesJoel Brobecker1-1/+1
gdb/ChangeLog: Update copyright year range in all GDB files
2017-11-07Constify add_infoTom Tromey1-2/+2
This patch constifies add_info and updates all the info commands. The bulk of this patch was written using a script; and then I did a manual pass to fix up the remaining compilation errors. I could not compile every changed file; in particular nto-procfs.c, gnu-nat.c, and darwin-nat-info.c; but I at least tried to check the correctness by inspection. gdb/ChangeLog 2017-11-07 Tom Tromey <tom@tromey.com> * frame.h (info_locals_command, info_args_command): Constify. * auto-load.h (auto_load_info_scripts): Constify. * inferior.h (registers_info): Constify. * copying.c: Rebuild. * copying.awk: Constify generated commands. * auto-load.c (auto_load_info_scripts) (info_auto_load_gdb_scripts): Constify. * cli/cli-decode.c (struct cmd_list_element): Take a cmd_const_cfunc_ftype. * command.h (add_info): Take a cmd_const_cfunc_ftype. * tui/tui-win.c (tui_all_windows_info): Constify. * python/py-auto-load.c (info_auto_load_python_scripts): Constify. * cli/cli-cmds.c (show_command): Remove non-const overload. * tracepoint.c (info_tvariables_command, info_scope_command): Constify. (info_static_tracepoint_markers_command): Constify. * thread.c (info_threads_command): Constify. (print_thread_info_1): Constify. * target.c (info_target_command): Constify. * symtab.c (info_sources_command, info_functions_command) (info_types_command): Constify. (info_variables_command): Remove non-const overload. * symfile.c (info_ext_lang_command): Constify. * stack.c (info_frame_command, info_locals_command) (info_args_command): Constify. (backtrace_command): Remove non-const overload. * source.c (info_source_command, info_line_command): Constify. * solib.c (info_sharedlibrary_command): Constify. * skip.c (info_skip_command): Constify. * ser-go32.c (info_serial_command): Constify. * reverse.c (info_bookmarks_command): Constify. * printcmd.c (info_symbol_command, info_address_command) (info_display_command): Constify. * osdata.c (info_osdata_command): Constify. * objc-lang.c (info_selectors_command, info_classes_command): Constify. * nto-procfs.c (procfs_pidlist, procfs_meminfo): Constify. * memattr.c (info_mem_command): Constify. * macrocmd.c (info_macro_command, info_macros_command): Constify. * linux-fork.c (info_checkpoints_command): Constify. * infrun.c (info_signals_command): Constify. * inflow.c (info_terminal_command): Constify. * inferior.c (info_inferiors_command): Constify. (print_inferior): Constify. * infcmd.c (info_program_command, info_all_registers_command) (info_registers_command, info_vector_command) (info_float_command): Constify. (registers_info): Constify. * gnu-nat.c (info_send_rights_cmd, info_recv_rights_cmd) (info_port_sets_cmd, info_dead_names_cmd, info_port_rights_cmd): Constify. * f-valprint.c (info_common_command): Constify. * dcache.c (info_dcache_command): Constify. (dcache_info_1): Constify. * darwin-nat-info.c (info_mach_tasks_command) (info_mach_task_command, info_mach_ports_command) (info_mach_port_command, info_mach_threads_command) (info_mach_thread_command, info_mach_regions_command) (info_mach_regions_recurse_command, info_mach_region_command) (info_mach_exceptions_command): Constify. (get_task_from_args): Constify. * cp-support.c (info_vtbl_command): Constify. * breakpoint.c (info_watchpoints_command) (info_tracepoints_command): Constify. (info_breakpoints_command): Remove non-const overload. * avr-tdep.c (avr_io_reg_read_command): Constify. * auxv.c (info_auxv_command): Constify. * ada-tasks.c (info_tasks_command): Constify. (info_task): Constify. * ada-lang.c (info_exceptions_command): Constify.
2017-11-07Constify add_comTom Tromey1-1/+1
This changes add_com to take a cmd_const_cfunc_ftype, and then fixes up all the command implementations. In most cases this is trivial. In a couple of places I had to again introduce a temporary non-const overload. These overloads will be removed when add_info is constified. gdb/ChangeLog 2017-11-07 Tom Tromey <tom@tromey.com> * solib.h (no_shared_libraries): Constify. * frame.h (return_command): Constify. * cli/cli-cmds.h (quit_command): Constify. * top.h (quit_command, execute_command): Constify. * target.h (flash_erase_command): Constify. * inferior.h (set_inferior_args, attach_command): Constify. * tracepoint.h (start_tracing, stop_tracing): Constify. * breakpoint.h (break_command, tbreak_command) (hbreak_command_wrapper, thbreak_command_wrapper) (rbreak_command_wrapper, watch_command_wrapper) (awatch_command_wrapper, rwatch_command_wrapper) (get_tracepoint_by_number): Constify. * symtab.c (info_variables_command, rbreak_command) (symtab_symbol_info): Constify. (info_variables_command): Add non-const overload. * top.c (dont_repeat_command): Constify. * breakpoint.c (ignore_command, commands_command) (condition_command, tbreak_command, hbreak_command) (thbreak_command, clear_command, break_command) (info_breakpoints_command, watch_command, rwatch_command) (awatch_command, trace_command, ftrace_command, strace_command) (trace_pass_command, break_range_command, dprintf_command) (agent_printf_command, get_tracepoint_by_number) (watch_maybe_just_location, trace_pass_command): Constify. (info_breakpoints_command): Add non-const overload. * tracefile.c (tsave_command): Constify. * infcmd.c (attach_command, disconnect_command, signal_command) (queue_signal_command, stepi_command, nexti_command) (finish_command, next_command, step_command, until_command) (advance_command, jump_command, continue_command, run_command) (start_command, starti_command, interrupt_command) (run_command_1, set_inferior_args, step_1): Constify. * inferior.c (add_inferior_command, remove_inferior_command) (clone_inferior_command): Constify. * linux-fork.c (checkpoint_command, restart_command): Constify. * windows-nat.c (signal_event_command): Constify. * guile/guile.c (guile_repl_command, guile_command): Constify. * printcmd.c (x_command, display_command, printf_command) (output_command, set_command, call_command, print_command) (eval_command): Constify. (non_const_set_command): Remove. (_initialize_printcmd): Update. * source.c (forward_search_command, reverse_search_command): Constify. * jit.c (jit_reader_load_command, jit_reader_unload_command): Constify. * infrun.c (handle_command): Constify. * memattr.c (mem_command): Constify. * stack.c (return_command, up_command, up_silently_command) (down_command, down_silently_command, frame_command) (backtrace_command, func_command, backtrace_command_1): Constify. (backtrace_command): Add non-const overload. * remote-sim.c (simulator_command): Constify. * exec.c (set_section_command): Constify. * tracepoint.c (tdump_command, trace_variable_command) (tstatus_command, tstop_command, tstart_command) (end_actions_pseudocommand, while_stepping_pseudocommand) (collect_pseudocommand, teval_pseudocommand, actions_command) (start_tracing, stop_tracing): Constify. * value.c (init_if_undefined_command): Constify. * tui/tui-stack.c (tui_update_command): Constify. * tui/tui-win.c (tui_refresh_all_command) (tui_set_tab_width_command, tui_set_win_height_command) (tui_set_focus_command, tui_scroll_forward_command) (tui_scroll_backward_command, tui_scroll_left_command) (tui_scroll_right_command, parse_scrolling_args, tui_set_focus) (tui_set_win_height): Constify. * tui/tui-layout.c (tui_layout_command): Constify. * procfs.c (proc_trace_syscalls, proc_trace_sysentry_cmd) (proc_trace_sysexit_cmd, proc_untrace_sysentry_cmd) (proc_untrace_sysexit_cmd): Constify. * remote.c (threadlist_test_cmd, threadinfo_test_cmd) (threadset_test_cmd, threadlist_update_test_cmd) (threadalive_test): Constify. * objc-lang.c (print_object_command): Constify. * command.h (add_com): Constify. * cli/cli-dump.c (restore_command): Constify. * cli/cli-cmds.c (pwd_command, echo_command, quit_command) (help_command, complete_command, shell_command, edit_command) (list_command, disassemble_command, make_command) (apropos_command, alias_command): Constify. * cli/cli-script.c (document_command, define_command) (while_command, if_command, validate_comname): Constify. * cli/cli-decode.c (struct cmd_list_element): Change type of "fun". * target.c (do_monitor_command, flash_erase_command): Constify. * regcache.c (reg_flush_command): Constify. * reverse.c (reverse_step, reverse_next, reverse_stepi) (reverse_nexti, reverse_continue, reverse_finish) (save_bookmark_command, goto_bookmark_command) (exec_reverse_once): Constify. * python/python.c (python_interactive_command, python_command): Constify. * typeprint.c (ptype_command, whatis_command, whatis_exp): Constify. * solib.c (sharedlibrary_command, no_shared_libraries): Constify. * gcore.c (gcore_command): Constify.
2017-11-02const-fy regcache::m_aspaceYao Qi1-1/+3
regcache::m_aspace is a const, never changed during the lifetime of regcache object. The address_space object is a const object too. gdb: 2017-11-02 Yao Qi <yao.qi@linaro.org> * breakpoint.c (insert_single_step_breakpoints): Update. * frame.c (struct frame_info) <aspace>: Add const. (frame_save_as_regcache): Add const. (get_frame_address_space): Return const address_space *. * frame.h (get_frame_address_space): Update declaration. * infrun.c (struct step_over_info) <aspace>: Add const. (set_step_over_info): Make aspace const. (displaced_step_prepare_throw): Change variable const. (resume): Likewise. (proceed): Likewise. (adjust_pc_after_break): Likewise. (save_waitstatus): Likewise. (handle_signal_stop): Likewise. (keep_going_pass_signal): Likewise. * jit.c (jit_frame_sniffer): Add const. * mips-tdep.c (mips_single_step_through_delay): Likewise. * ppc-linux-tdep.c (ppu2spu_sniffer): Likewise. * record-full.c (record_full_wait_1): Likewise. * regcache.c (regcache::regcache): Change parameter to const. * regcache.h (regcache::regcache): Likewise. (regcache::aspace): Return const address_space *. (regcache) <m_aspace>: Add const.
2017-10-08Remove cleanup from frame_prepare_for_snifferTom Tromey1-4/+9
Currently frame_prepare_for_sniffer returns a cleanup. This patch changes it to return void, and exposes frame_cleanup_after_sniffer to the caller. Normally I would write an RAII class for this sort of thing; but because there was just a single caller of frame_prepare_for_sniffer, and because this caller is already using try/catch, I thought it seemed ok to require explicit calls in this instance. Regression tested by the buildbot. gdb/ChangeLog 2017-10-08 Tom Tromey <tom@tromey.com> * frame-unwind.c (frame_unwind_try_unwinder): Update. * frame.h (frame_cleanup_after_sniffer): Declare. (frame_prepare_for_sniffer): Return void. * frame.c (frame_cleanup_after_sniffer): No longer static. Change type of argument. (frame_prepare_for_sniffer): Return void.
2017-10-04Redesign mock environment for gdbarch selftestsPedro Alves1-8/+0
A following patch will remove this hack from within regcache's implementation: struct regcache * get_thread_arch_regcache (ptid_t ptid, struct gdbarch *gdbarch) { struct address_space *aspace; /* For the benefit of "maint print registers" & co when debugging an executable, allow dumping the regcache even when there is no thread selected (target_thread_address_space internal-errors if no address space is found). Note that normal user commands will fail higher up on the call stack due to no target_has_registers. */ aspace = (ptid_equal (null_ptid, ptid) ? NULL : target_thread_address_space (ptid)); i.e., it'll no longer be possible to try to build a regcache for null_ptid. That change alone would regress the gdbarch self tests though, causing this: (gdb) maintenance selftest [...] Running selftest register_to_value. src/gdb/inferior.c:309: internal-error: inferior* find_inferior_pid(int): Assertion `pid != 0' failed. A problem internal to GDB has been detected, further debugging may prove unreliable. Quit this debugging session? (y or n) FAIL: gdb.gdb/unittest.exp: maintenance selftest (GDB internal error) The problem is that the way the mocking environment for those unit tests is written is a bit fragile: it creates a special purpose regcache (and sentinel's frame), using whatever is the current inferior_ptid (usually null_ptid), and assumes get_current_regcache will find that in the regcache::current_regcache list. This commit changes the way the mock environment is created. It eliminates the special regcache and frame and instead creates a fuller mock environment, with a custom mock target_ops, and then a mock inferior and thread "running" on that target. If there's already a running target when you type "maint selftest", then we error out, instead of pushing a new target on top of the existing one (and thus killing the debug session). This results in: (gdb) maint selftest (...) Self test failed: arch i386: target already pushed Self test failed: arch i386:x86-64: target already pushed Self test failed: arch i386:x64-32: target already pushed Self test failed: arch i8086: target already pushed Self test failed: arch i386:intel: target already pushed Self test failed: arch i386:x86-64:intel: target already pushed Self test failed: arch i386:x64-32:intel: target already pushed Self test failed: arch i386:nacl: target already pushed Self test failed: arch i386:x86-64:nacl: target already pushed Self test failed: arch i386:x64-32:nacl: target already pushed Self test failed: self-test failed at /home/pedro/gdb/mygit/src/gdb/selftest-arch.c:86 (...) Ran 19 unit tests, 1 failed I think that's OK, because self tests are really meant to be run from a clean state right after GDB is started. I'm adding that erroring out just as safe measure just in case someone types "maint selftest" on the command line while already debugging something (as I've done it). (In my multi-target branch, where this patch originated from, we don't actually need to error out, because there each inferior has its own target stack). Also, note that the current code was doing: current_inferior()->gdbarch = gdbarch; without taking care to restore the previous gdbarch. This means that GDB's state was being left inconsistent after running the self tests, further supporting the point that there's probably not much expectation that mixing "maint selftests" and regular debugging in the same GDB invocation really works. This patch fixes that, regardless. gdb/ChangeLog: 2017-10-04 Pedro Alves <palves@redhat.com> * frame.c (create_test_frame): Delete. * frame.h (create_test_frame): Delete. * gdbarch-selftests.c: Include gdbthread.h and target.h. (class regcache_test): Delete. (test_target_has_registers, test_target_has_stack) (test_target_has_memory, test_target_prepare_to_store) (test_target_store_registers): New functions. (test_target_ops): New class. (register_to_value_test): Error out if there's already a process_stratum (or higher) target pushed. Create a fuller mock environment, with mock target_ops, inferior, address space, thread and inferior_ptid. * progspace.c (struct address_space): Move to ... * progspace.h (struct address_space): ... here. * regcache.h (regcache::~regcache, regcache::raw_write) [GDB_SELF_TEST]: No longer virtual.
2017-09-25Remove make_cleanup_regcache_xfreeTom Tromey1-1/+2
This removes make_cleanup_regcache_xfree in favor of using std::unique_ptr as the return type of frame_save_as_regcache. gdb/ChangeLog 2017-09-25 Tom Tromey <tom@tromey.com> * spu-tdep.c (spu2ppu_sniffer): Update. * regcache.h (make_cleanup_regcache_xfree): Don't declare. * regcache.c (do_regcache_xfree, make_cleanup_regcache_xfree): Remove. * ppc-linux-tdep.c (ppu2spu_sniffer): Update. * mi/mi-main.c (mi_cmd_data_list_changed_registers): Update. * frame.h (frame_save_as_regcache): Return std::unique_ptr. * frame.c (frame_save_as_regcache): Return std::unique_ptr. (frame_pop): Update.
2017-09-04Kill init_salPedro Alves1-2/+1
Instead, make symtab_and_line initialize its members itself. Many symtab_and_line declarations are moved to where the object is initialized at the same time both for clarity and to avoid double initialization. A few functions, like e.g., find_frame_sal are adjusted to return the sal using normal function return instead of an output parameter likewise to avoid having to default-construct a sal and then immediately have the object overwritten. gdb/ChangeLog: 2017-09-04 Pedro Alves <palves@redhat.com> * ada-lang.c (is_known_support_routine): Move sal declaration to where it is initialized. * breakpoint.c (create_internal_breakpoint, init_catchpoint) (parse_breakpoint_sals, decode_static_tracepoint_spec) (clear_command, update_static_tracepoint): Remove init_sal references. Move declarations closer to initializations. * cli/cli-cmds.c (list_command): Move sal declarations closer to initializations. * elfread.c (elf_gnu_ifunc_resolver_stop): Remove init_sal references. Move sal declarations closer to initializations. * frame.c (find_frame_sal): Return a symtab_and_line via function return instead of output parameter. Remove init_sal references. * frame.h (find_frame_sal): Return a symtab_and_line via function return instead of output parameter. * guile/scm-frame.c (gdbscm_frame_sal): Adjust. * guile/scm-symtab.c (stscm_make_sal_smob): Use in-place new instead of memset. (gdbscm_find_pc_line): Remove init_sal reference. * infcall.c (call_function_by_hand_dummy): Remove init_sal references. Move declarations closer to initializations. * infcmd.c (set_step_frame): Update. Move declarations closer to initializations. (finish_backward): Remove init_sal references. Move declarations closer to initializations. * infrun.c (process_event_stop_test, handle_step_into_function) (insert_hp_step_resume_breakpoint_at_frame) (insert_step_resume_breakpoint_at_caller): Likewise. * linespec.c (create_sals_line_offset, decode_digits_ordinary) (symbol_to_sal): Likewise. * probe.c (parse_probes_in_pspace): Remove init_sal reference. * python/py-frame.c (frapy_find_sal): Move sal declaration closer to its initialization. * reverse.c (save_bookmark_command): Use new/delete. Remove init_sal references. Move declarations closer to initializations. * source.c (get_current_source_symtab_and_line): Remove brace initialization. (set_current_source_symtab_and_line): Now takes the sal by const reference. Remove brace initialization. (line_info): Remove init_sal reference. * source.h (set_current_source_symtab_and_line): Now takes a symtab_and_line via const reference. * stack.c (set_current_sal_from_frame): Adjust. (print_frame_info): Adjust. (get_last_displayed_sal): Return the sal via function return instead of via output parameter. Simplify. (frame_info): Adjust. * stack.h (get_last_displayed_sal): Return the sal via function return instead of via output parameter. * symtab.c (init_sal): Delete. (find_pc_sect_line): Remove init_sal references. Move declarations closer to initializations. (find_function_start_sal): Remove init_sal references. Move declarations closer to initializations. * symtab.h (struct symtab_and_line): In-class initialize all fields. * tracepoint.c (set_traceframe_context) (print_one_static_tracepoint_marker): Remove init_sal references. Move declarations closer to initializations. * tui/tui-disasm.c (tui_show_disassem_and_update_source): Adjust. * tui/tui-stack.c (tui_show_frame_info): Adjust. Move declarations closer to initializations. * tui/tui-winsource.c (tui_update_source_window_as_is): Remove init_sal references. Adjust.
2017-08-22Rename some command functionsSimon Marchi1-2/+2
This patch renames a few functions implementing CLI commands to follow the style <command-name>_command, so that they are easier to search for. gdb/ChangeLog: * breakpoint.c (breakpoints_info): Rename to ... (info_breakpoints_command): ... this. (watchpoints_info): Rename to ... (info_watchpoints_command): ... this. (tracepoints_info): Rename to ... (info_tracepoints_command): ... this. (_initialize_breakpoint): Adjust. * dcache.c (dcache_info): Rename to ... (info_display_command): ... this. (_initialize_dcache): Adjust. * frame.h (args_info): Rename to ... (info_args_command): ... this. (locals_info): Rename to ... (info_locals_command): ... this. * infcmd.c (nofp_registers_info): Rename to ... (info_registers_command): ... this. (float_info): Rename to ... (info_float_command): ... this. (program_info): Rename to ... (info_program_command): ... this. (all_registers_info): Rename to ... (info_all_registers_command): ... this. (vector_info): Rename to ... (info_vector_command): ... this. (float_info): Rename to ... (info_float_command): ... this. (_initialize_infcmd): Adjust. * inferior.h (term_info): Rename to ... (info_terminal_command): ... this. * inflow.c (term_info): Rename to ... (info_terminal_command): ... this. (_initialize_inflow): Adjust. * infrun.c (signals_info): Rename to ... (info_signals_command): ... this. (_initialize_infrun): Adjust. * objc-lang.c (classes_info): Rename to ... (info_classes_command): ... this. (selectors_info): Rename to ... (info_selectors_command): ... this. (_initialize_objc_language): Adjust. * printcmd.c (sym_info): Rename to ... (info_symbol_command): ... this. (address_info): Rename to ... (info_address_command): ... this. (display_info): Rename to ... (info_display_command): ... this. (_initialize_printcmd): Adjust. * reverse.c (bookmarks_info): Rename to ... (info_breakpoints_command): ... this. (_initialize_reverse): Adjust. * ser-go32.c (dos_info): Rename to ... (info_serial_command): ... this. (_initialize_ser_dos): Adjust. * skip.c (skip_info): Rename to ... (info_skip_command): ... this. (_initialize_step_skip): Adjust. * source.c (line_info): Rename to ... (info_line_command): ... this. (source_info): Rename to ... (info_source_command) * stack.c (frame_info): Rename to ... (info_frame_command): ... this. (locals_info): Rename to ... (info_locals_command): ... this. (args_info): Rename to ... (info_args_command): ... this. (_initialize_stack): Adjust. * symtab.c (sources_info): Rename to ... (info_sources_command): ... this. (variables_info): Rename to ... (info_variables_command): ... this. (functions_info): Rename to ... (info_functions_command): ... this. (types_info): Rename to ... (info_types_command): ... this. (_initialize_symtab): Adjust. * target.c (target_info): Rename to ... (info_target_command): ... this. (initialize_targets): Adjust. * tracepoint.c (tvariables_info): Rename to ... (info_tvariables_command): ... this. (scope_info): Rename to ... (info_scope_command): ... this. (trace_dump_actions): Adjust. (_initialize_tracepoint): Adjust.
2017-05-24Add unit test to gdbarch methods register_to_value and value_to_registerYao Qi1-0/+8
This patch adds one unit test for gdbarch methods register_to_value and value_to_register. The test pass different combinations of {regnu, type} to gdbarch_register_to_value and gdbarch_value_to_register. In order to do the test, add a new function create_new_frame to create a fake frame. It can be improved after we converted frame_info to class. In order to isolate regcache (from target_ops operations on writing registers, like target_store_registers), the sub-class of regcache in the test override raw_write. Also, in order to get the right regcache from get_thread_arch_aspace_regcache, the sub-class of regcache inserts itself to current_regcache. Suppose I incorrectly modified the size of buffer as below, @@ -1228,7 +1228,7 @@ ia64_register_to_value (struct frame_info *frame, int regnum, int *optimizedp, int *unavailablep) { struct gdbarch *gdbarch = get_frame_arch (frame); - gdb_byte in[MAX_REGISTER_SIZE]; + gdb_byte in[1]; /* Convert to TYPE. */ if (!get_frame_register_bytes (frame, regnum, 0, build GDB with "-fsanitize=address" and run unittest.exp, asan can detect such error ==2302==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7fff98193870 at pc 0xbd55ea bp 0x7fff981935a0 sp 0x7fff98193598 WRITE of size 16 at 0x7fff98193870 thread T0 #0 0xbd55e9 in frame_register_unwind(frame_info*, int, int*, int*, lval_type*, unsigned long*, int*, unsigned char*) /home/yao/SourceCode/gnu/gdb/git/gdb/frame.c:1119 #1 0xbd58c8 in frame_register(frame_info*, int, int*, int*, lval_type*, unsigned long*, int*, unsigned char*) /home/yao/SourceCode/gnu/gdb/git/gdb/frame.c:1147 #2 0xbd6e25 in get_frame_register_bytes(frame_info*, int, unsigned long, int, unsigned char*, int*, int*) /home/yao/SourceCode/gnu/gdb/git/gdb/frame.c:1427 #3 0x70080a in ia64_register_to_value /home/yao/SourceCode/gnu/gdb/git/gdb/ia64-tdep.c:1236 #4 0xbf570e in gdbarch_register_to_value(gdbarch*, frame_info*, int, type*, unsigned char*, int*, int*) /home/yao/SourceCode/gnu/gdb/git/gdb/gdbarch.c:2619 #5 0xc05975 in register_to_value_test /home/yao/SourceCode/gnu/gdb/git/gdb/gdbarch-selftests.c:131 Or, even if GDB is not built with asan, GDB just crashes. *** stack smashing detected ***: ./gdb terminated Aborted (core dumped) gdb: 2017-05-24 Yao Qi <yao.qi@linaro.org> * Makefile.in (SFILES): Add gdbarch-selftests.c. (COMMON_OBS): Add gdbarch-selftests.o. * frame.c [GDB_SELF_TESTS] (create_new_frame): New function. * frame.h [GDB_SELF_TESTS] (create_new_frame): Declare. * gdbarch-selftests.c: New file. * regcache.h (regcache) <~regcache>: Mark it virtual if GDB_SELF_TEST. <raw_write>: Likewise.
2017-01-01update copyright year range in GDB filesJoel Brobecker1-1/+1
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.
2016-11-16Change meaning of VALUE_FRAME_ID; rename to VALUE_NEXT_FRAME_IDKevin Buettner1-0/+4
The VALUE_FRAME_ID macro provides access to a member in struct value that's used to hold the frame id that's used when determining a register's value or when assigning to a register. The underlying member has a long and obscure name. I won't refer to it here, but will simply refer to VALUE_FRAME_ID as if it's the struct value member instead of being a convenient macro. At the moment, without this patch in place, VALUE_FRAME_ID is set in value_of_register_lazy() and several other locations to hold the frame id of the frame passed to those functions. VALUE_FRAME_ID is used in the lval_register case of value_fetch_lazy(). To fetch the register's value, it calls get_frame_register_value() which, in turn, calls frame_unwind_register_value() with frame->next. A python based unwinder may wish to determine the value of a register or evaluate an expression containing a register. When it does this, value_fetch_lazy() will be called under some circumstances. It will attempt to determine the frame id associated with the frame passed to it. In so doing, it will end up back in the frame sniffer of the very same python unwinder that's attempting to learn the value of a register as part of the sniffing operation. This recursion is not desirable. As noted above, when value_fetch_lazy() wants to fetch a register's value, it does so (indirectly) by unwinding from frame->next. With this in mind, a solution suggests itself: Change VALUE_FRAME_ID to hold the frame id associated with the next frame. Then, when it comes time to obtain the value associated with the register, we can simply unwind from the frame corresponding to the frame id stored in VALUE_FRAME_ID. This neatly avoids the python unwinder recursion problem by changing when the "next" operation occurs. Instead of the "next" operation occuring when the register value is fetched, it occurs earlier on when assigning a frame id to VALUE_FRAME_ID. (Thanks to Pedro for this suggestion.) This patch implements this idea. It builds on the patch "Distinguish sentinel frame from null frame". Without that work in place, it's necessary to check for null_id at several places and then obtain the sentinel frame. It also renames most occurences of VALUE_FRAME_ID to VALUE_NEXT_FRAME_ID to reflect the new meaning of this field. There are several uses of VALUE_FRAME_ID which were not changed. In each case, the original meaning of VALUE_FRAME_ID is required to get correct results. In all but one of these uses, either put_frame_register_bytes() or get_frame_register_bytes() is being called with the frame value obtained from VALUE_FRAME_ID. Both of these functions perform some unwinding by performing a "->next" operation on the frame passed to it. If we were to use the new VALUE_NEXT_FRAME_ID macro, this would effectively do two "->next" operations, which is not what we want. The VALUE_FRAME_ID macro has been redefined in terms of VALUE_NEXT_FRAME_ID. It simply fetches the previous frame's id, providing this id as the value of the macro. gdb/ChangeLog: * value.h (VALUE_FRAME_ID): Rename to VALUE_NEXT_FRAME_ID. Update comment. Create new VALUE_FRAME_ID which is defined in terms of VALUE_NEXT_FRAME_ID. (deprecated_value_frame_id_hack): Rename to deprecated_value_next_frame_id_hack. * dwarf2loc.c, findvar.c, frame-unwind.c, sentinel-frame.c, valarith.c, valops.c, value.c: Adjust nearly all occurences of VALUE_FRAME_ID to VALUE_NEXT_FRAME_ID. Add comments for those which did not change. * value.c (struct value): Rename frame_id field to next_frame_id. Update comment. (deprecated_value_frame_id_hack): Rename to deprecated_value_next_frame_id_hack. (value_fetch_lazy): Call frame_unwind_register_value() instead of get_frame_register_value(). * frame.c (get_prev_frame_id_by_id): New function. * frame.h (get_prev_frame_id_by_id): Declare. * dwarf2loc.c (dwarf2_evaluate_loc_desc_full): Make VALUE_NEXT_FRAME_ID refer to the next frame. * findvar.c (value_of_register_lazy): Likewise. (default_value_from_register): Likewise. (value_from_register): Likewise. * frame_unwind.c (frame_unwind_got_optimized): Likewise. * sentinel-frame.c (sentinel_frame_prev_register): Likewise. * value.h (VALUE_FRAME_ID): Update comment describing this macro.
2016-11-16Distinguish sentinel frame from null frame.Kevin Buettner1-1/+11
This patch replaces the `current_frame' static global in frame.c with `sentinel_frame'. It also makes the sentinel frame id unique and different from the null frame. By itself, there is not much point to this patch, but it makes the code cleaner for the VALUE_FRAME_ID changes in another patch. Since we now allow "navigation" to the sentinel frame, it removes the necessity of adding special cases to other parts of GDB. Note that a new function, get_next_frame_sentinel_okay, is introduced in this patch. It will be used by the VALUE_FRAME_ID changes that I've made. Thanks to Pedro Alves for this suggestion. gdb/ChangeLog: * frame.h (enum frame_id_stack_status): Add FID_STACK_SENTINEL. (struct frame_id): Increase number of bits required for storing stack status to 3 from 2. (sentinel_frame_id): New declaration. (get_next_frame_sentinel_okay): Declare. (frame_find_by_id_sentinel_okay): Declare. * frame.c (current_frame): Rename this static global to... (sentinel_frame): ...this static global, which has also been moved an earlier location in the file. (fprint_frame_id): Add case for sentinel frame id. (get_frame_id): Return early for sentinel frame. (sentinel_frame_id): Define. (frame_find_by_id): Add case for sentinel_frame_id. (create_sentinel_frame): Use sentinel_frame_id for this_id.value instead of null_frame_id. (get_current_frame): Add local declaration for `current_frame'. Remove local declaration for `sentinel_frame.' (get_next_frame_sentinel_okay): New function. (reinit_frame_cache): Use `sentinel_frame' in place of `current_frame'.
2016-10-06frame.h: Forward-declare struct ui_outSimon Marchi1-0/+1
Fixes this failure when building in C mode. I think it's relevant for master as well, since it's a good practice to include (or forward-declare) what you use. In file included from ../../binutils-gdb/gdb/gdbarch.h:38:0, from ../../binutils-gdb/gdb/defs.h:653, from ../../binutils-gdb/gdb/dictionary.c:23: ../../binutils-gdb/gdb/frame.h:710:48: warning: ‘struct ui_out’ declared inside parameter list will not be visible outside of this definition or declaration extern void print_stack_frame_to_uiout (struct ui_out *uiout, gdb/ChangeLog: * frame.h: Forward-declare struct ui_out.
2016-10-03Emit inferior, thread and frame selection events to all UIsAntoine Tremblay1-0/+8
With this patch, when an inferior, thread or frame is explicitly selected by the user, notifications will appear on all CLI and MI UIs. When a GDB console is integrated in a front-end, this allows the front-end to follow a selection made by the user ont he CLI, and it informs the user about selection changes made behind the scenes by the front-end. This patch addresses PR gdb/20487. In order to communicate frame changes to the front-end, this patch adds a new field to the =thread-selected event for the selected frame. The idea is that since inferior/thread/frame can be seen as a composition, it makes sense to send them together in the same event. The vision would be to eventually send the inferior information as well, if we find that it's needed, although the "=thread-selected" event would be ill-named for that job. Front-ends need to handle this new field if they want to follow the frame selection changes that originate from the console. The format of the frame attribute is the same as what is found in the *stopped events. Here's a detailed example for each command and the events they generate: thread ------ 1. CLI command: thread 1.3 MI event: =thread-selected,id="3",frame={...} 2. MI command: -thread-select 3 CLI event: [Switching to thread 1.3 ...] 3. MI command (CLI-in-MI): thread 1.3 MI event/reply: &"thread 1.3\n" ~"#0 child_sub_function () ... =thread-selected,id="3",frame={level="0",...} ^done frame ----- 1. CLI command: frame 1 MI event: =thread-selected,id="3",frame={level="1",...} 2. MI command: -stack-select-frame 1 CLI event: #1 0x00000000004007f0 in child_function... 3. MI command (CLI-in-MI): frame 1 MI event/reply: &"frame 1\n" ~"#1 0x00000000004007f9 in ..." =thread-selected,id="3",frame={level="1"...} ^done inferior -------- Inferior selection events only go from the console to MI, since there's no way to select the inferior in pure MI. 1. CLI command: inferior 2 MI event: =thread-selected,id="3" Note that if the user selects an inferior that is not started or exited, the MI doesn't receive a notification. Since there is no threads to select, the =thread-selected event does not apply... 2. MI command (CLI-in-MI): inferior 2 MI event/reply: &"inferior 2\n" ~"[Switching to inferior 2 ...]" =thread-selected,id="4",frame={level="0"...} ^done Internal implementation detail: this patch makes it possible to suppress notifications caused by a CLI command, like what is done in mi-interp.c. This means that it's now possible to use the add_com_suppress_notification function to register a command with some event suppressed. It is used to implement the select-frame command in this patch. The function command_notifies_uscc_observer was added to extract the rather complicated logical expression from the if statement. It is also now clearer what that logic does: if the command used by the user already notifies the user_selected_context_changed observer, there is not need to notify it again. It therefore protects again emitting the event twice. No regressions, tested on ubuntu 14.04 x86 with target boards unix and native-extended-gdbserver. gdb/ChangeLog: YYYY-MM-DD Antoine Tremblay <antoine.tremblay@ericsson.com> YYYY-MM-DD Simon Marchi <simon.marchi@ericsson.com> PR gdb/20487 * NEWS: Mention new frame field of =thread-selected event. * cli/cli-decode.c (add_cmd): Initialize c->suppress_notification. (add_com_suppress_notification): New function definition. (cmd_func): Set and restore the suppress_notification flag. * cli/cli-deicode.h (struct cmd_list_element) <suppress_notification>: New field. * cli/cli-interp.c (cli_suppress_notification): New global variable. (cli_on_user_selected_context_changed): New function. (_initialize_cli_interp): Attach to user_selected_context_changed observer. * command.h (struct cli_suppress_notification): New structure. (cli_suppress_notification): New global variable declaration. (add_com_suppress_notification): New function declaration. * defs.h (enum user_selected_what_flag): New enum. (user_selected_what): New enum flag type. * frame.h (print_stack_frame_to_uiout): New function declaration. * gdbthread.h (print_selected_thread_frame): New function declaration. * inferior.c (print_selected_inferior): New function definition. (inferior_command): Remove printing of inferior/thread/frame switch notifications, notify user_selected_context_changed observer. * inferior.h (print_selected_inferior): New function declaration. * mi/mi-cmds.c (struct mi_cmd): Add user_selected_context suppression to stack-select-frame and thread-select commands. * mi/mi-interp.c (struct mi_suppress_notification) <user_selected_context>: Initialize. (mi_user_selected_context_changed): New function definition. (_initialize_mi_interp): Attach to user_selected_context_changed. * mi/mi-main.c (mi_cmd_thread_select): Print thread selection reply. (mi_execute_command): Handle notification suppression. Notify user_selected_context_changed observer on thread change instead of printing event directly. Don't send it if command already sends the notification. (command_notifies_uscc_observer): New function. (mi_cmd_execute): Don't handle notification suppression. * mi/mi-main.h (struct mi_suppress_notification) <user_selected_context>: New field. * stack.c (print_stack_frame_to_uiout): New function definition. (select_frame_command): Notify user_selected_context_changed observer. (frame_command): Call print_selected_thread_frame if there's no frame change or notify user_selected_context_changed observer if there is. (up_command): Notify user_selected_context_changed observer. (down_command): Likewise. (_initialize_stack): Suppress user_selected_context notification for command select-frame. * thread.c (thread_command): Notify user_selected_context_changed if the thread has changed, print thread info directly if it hasn't. (do_captured_thread_select): Do not print thread switch event. (print_selected_thread_frame): New function definition. * tui/tui-interp.c (tui_on_user_selected_context_changed): New function definition. (_initialize_tui_interp): Attach to user_selected_context_changed observer. gdb/doc/ChangeLog: PR gdb/20487 * gdb.texinfo (Context management): Update mention of frame change notifications. (gdb/mi Async Records): Document frame field in =thread-select event. * observer.texi (GDB Observers): New user_selected_context_changed observer. gdb/testsuite/ChangeLog: PR gdb/20487 * gdb.mi/mi-pthreads.exp (check_mi_thread_command_set): Adapt =thread-select-event check.
2016-05-23Skip unwritable frames in command "finish"Yao Qi1-0/+5
Nowadays, GDB can't insert breakpoint on the return address of the exception handler on ARM M-profile, because the address is a magic one 0xfffffff9, (gdb) bt #0 CT32B1_IRQHandler () at ../src/timer.c:67 #1 <signal handler called> #2 main () at ../src/timer.c:127 (gdb) info frame Stack level 0, frame at 0x200ffa8: pc = 0x4ec in CT32B1_IRQHandler (../src/timer.c:67); saved pc = 0xfffffff9 called by frame at 0x200ffc8 source language c. Arglist at 0x200ffa0, args: Locals at 0x200ffa0, Previous frame's sp is 0x200ffa8 Saved registers: r7 at 0x200ffa0, lr at 0x200ffa4 (gdb) x/x 0xfffffff9 0xfffffff9: Cannot access memory at address 0xfffffff9 (gdb) finish Run till exit from #0 CT32B1_IRQHandler () at ../src/timer.c:67 Ed:15: Target error from Set break/watch: Et:96: Pseudo-address (0xFFFFFFxx) for EXC_RETURN is invalid (GDB error?) Warning: Cannot insert hardware breakpoint 0. Could not insert hardware breakpoints: You may have requested too many hardware breakpoints/watchpoints. Command aborted. even some debug probe can't set hardware breakpoint on the magic address too, (gdb) hbreak *0xfffffff9 Hardware assisted breakpoint 2 at 0xfffffff9 (gdb) c Continuing. Ed:15: Target error from Set break/watch: Et:96: Pseudo-address (0xFFFFFFxx) for EXC_RETURN is invalid (GDB error?) Warning: Cannot insert hardware breakpoint 2. Could not insert hardware breakpoints: You may have requested too many hardware breakpoints/watchpoints. Command aborted. The problem described above is quite similar to PR 8841, in which GDB can't set breakpoint on signal trampoline, which is mapped to a read-only page by kernel. The rationale of this patch is to skip "unwritable" frames when looking for caller frames in command "finish", and a new gdbarch method code_of_frame_writable is added. This patch fixes the problem on ARM cortex-m target, but it can be used to fix PR 8841 too. gdb: 2016-05-10 Yao Qi <yao.qi@arm.com> * arch-utils.c (default_code_of_frame_writable): New function. * arch-utils.h (default_code_of_frame_writable): Declare. * arm-tdep.c (arm_code_of_frame_writable): New function. (arm_gdbarch_init): Install gdbarch method code_of_frame_writable if the target is M-profile. * frame.c (skip_unwritable_frames): New function. * frame.h (skip_unwritable_frames): Declare. * gdbarch.sh (code_of_frame_writable): New. * gdbarch.c, gdbarch.h: Re-generated. * infcmd.c (finish_command): Call skip_unwritable_frames.
2016-02-12btrace, frame: fix crash in get_frame_typeMarkus Metzger1-1/+2
In skip_artificial_frames we repeatedly call get_prev_frame_always until we get a non-inline and non-tailcall frame assuming that there must be such a frame eventually. For record targets, however, we may have a frame chain that consists only of artificial frames. This leads to a crash in get_frame_type when dereferencing a NULL frame pointer. Change skip_artificial_frames and skip_tailcall_frames to return NULL in such a case and modify each caller to cope with a NULL return. In frame_unwind_caller_pc and frame_unwind_caller_arch, we simply assert that the returned value is not NULL. Their caller was supposed to check frame_unwind_caller_id before calling those functions. In other cases, we thrown an error. In infcmd further move the skip_tailcall_frames call to the forward-stepping case since we don't need a frame for reverse execution and we don't want to fail because of that. Reverse-finish does make sense for a tailcall frame. gdb/ * frame.h (skip_tailcall_frames): Update comment. * frame.c (skip_artificial_frames, skip_tailcall_frames): Return NULL if only artificial frames are found. Update comment. (frame_unwind_caller_id): Handle NULL return. (frame_unwind_caller_pc, frame_unwind_caller_arch): Assert that skip_artificial_frames does not return NULL. (frame_pop): Add an error if only tailcall frames are found. * infcmd.c (finish_command): Move skip_tailcall_frames call into forward- execution case. Add an error if only tailcall frames are found. testsuite/ * gdb.btrace/tailcall-only.exp: New. * gdb.btrace/tailcall-only.c: New. * gdb.btrace/x86_64-tailcall-only.S: New. * gdb.btrace/i686-tailcall-only.S: New.
2016-02-12frame: add skip_tailcall_framesMarkus Metzger1-0/+4
Add a new function skip_tailcall_frames to skip TAILCALL_FRAME frames. gdb/ * frame.h (skip_tailcall_frames): New. * frame.c (skip_tailcall_frames): New. (frame_pop): Call skip_tailcall_frames. * infcmd.c (finish_command): Call skip_tailcall_frames.
2016-01-01GDB copyright headers update after running GDB's copyright.py script.Joel Brobecker1-1/+1
gdb/ChangeLog: Update year range in copyright notice of all files.
2015-08-07gdb: Move get_frame_language from stack.c to frame.c.Andrew Burgess1-0/+7
The get_frame_language feels like it would be more at home in frame.c rather than in stack.c, while the declaration, that is currently in language.h can be moved into frame.h to match. A couple of new includes are added, but otherwise no substantial change here. gdb/ChangeLog: * stack.c (get_frame_language): Moved ... * frame.c (get_frame_language): ... to here. * language.h (get_frame_language): Declaration moved to frame.h. * frame.h: Add language.h include, for language enum. (get_frame_language): Declaration moved from language.h. * language.c: Add frame.h include. * top.c: Add frame.h include. * symtab.h (struct obj_section): Declare. (struct cmd_list_element): Declare.
2015-06-30Replace TUI's select_frame hook (PR tui/13378)Patrick Palka1-2/+0
The select_frame hook is used by TUI to update TUI's frame and register information following changes to the selected frame. The problem with this hook is that it gets called after every single frame change, even if the frame change is only temporary or internal. This is the primary cause of flickering and slowdown when running the inferior under TUI with conditional breakpoints set. Internal GDB events are the source of many calls to select_frame and these internal events are triggered frequently, especially when a few conditional breakpoints are set. This patch removes the select_frame hook altogether and instead makes the frame and register information get updated in two key places (using observers): after an inferior stops, and right before displaying a prompt. The latter hook covers the case when frame information must be updated following a call to "up", "down" or "frame", and the former covers the case when frame and register information must be updated after a call to "continue", "step", etc. or after the inferior stops in async execution mode. Together these hooks should cover all the cases when frame information ought to be refreshed (and when the relevant windows ought to be subsequently updated). The print_frame_info_listing hook is also effectively obsolete now, but it still must be set while the TUI is active because its caller print_frame_info will otherwise assume that the CLI is active, and will print the frame informaion accordingly. So this patch also sets the print_frame_info_listing hook to a dummy callback, in lieu of outright removing it yet. Effectively, with this patch, frame/PC changes that do not immediately precede an inferior-stop event or a prompt display event no longer cause TUI's frame and register information to be updated. And as a result of this change and of the previous change to tui_show_frame_info, the TUI is much more disciplined about updating the screen, and so the flicker as described in the PR is totally gone. gdb/ChangeLog: PR tui/13378 * frame.c (select_frame): Remove reference to deprecated_selected_frame_level_changed_hook. * frame.h (deprecated_selected_frame_level_changed_hook): Remove declaration. * stack.c (deprecated_selected_frame_level_changed_hook): Likewise. * tui/tui-hooks.c (tui_selected_frame_level_changed_hook): Rename to ... (tui_refresh_frame_and_register_information): ... this. Bail out if there is no stack. Don't update register information unless registers_too_p is true. (tui_print_frame_info_listing_hook): Rename to ... (tui_dummy_print_frame_info_listing_hook): ... this. (tui_before_prompt): New function. (tui_normal_stop): New function. (tui_before_prompt_observer): New observer. (tui_normal_stop_observer): New observer. (tui_install_hooks): Set deprecated_print_frame_info_listing_hook to tui_dummy_print_frame_info_listing_hook. Register tui_before_prompt_observer to call tui_before_prompt and tui_normal_stop_observer to call tui_normal_stop. Remove reference to deprecated_selected_frame_level_changed_hook. (tui_remove_hooks): Detach and unset tui_before_prompt_observer and tui_normal_stop_observer. Remove reference to deprecated_selected_frame_level_changed_hook.
2015-01-01Update year range in copyright notice of all files owned by the GDB project.Joel Brobecker1-1/+1
gdb/ChangeLog: Update year range in copyright notice of all files.
2014-06-18constify struct block in some placesTom Tromey1-3/+3
This makes some spots in gdb, particularly general_symbol_info, use a "const struct block", then fixes the fallout. The justification is that, ordinarily, blocks ought to be readonly. Note though that we can't add "const" in the blockvector due to block relocation. This can be done once blocks are made independent of the program space. 2014-06-18 Tom Tromey <tromey@redhat.com> * varobj.c (varobj_create): Update. * valops.c (value_of_this): Update. * tracepoint.c (add_local_symbols, scope_info): Update. * symtab.h (struct general_symbol_info) <block>: Now const. * symtab.c (skip_prologue_sal) (default_make_symbol_completion_list_break_on) (skip_prologue_using_sal): Update. * stack.h (iterate_over_block_locals) (iterate_over_block_local_vars): Update. * stack.c (print_frame_args): Update. (iterate_over_block_locals, iterate_over_block_local_vars): Make parameter const. (get_selected_block): Make return type const. * python/py-frame.c (frapy_block): Update. * python/py-block.c (gdbpy_block_for_pc): Update. * p-exp.y (%union) <bval>: Now const. * mi/mi-cmd-stack.c (list_args_or_locals): Update. * mdebugread.c (mylookup_symbol, parse_procedure): Update. * m2-exp.y (%union) <bval>: Now const. * linespec.c (get_current_search_block): Make return type const. (create_sals_line_offset, find_label_symbols): Update. * inline-frame.c (inline_frame_sniffer, skip_inline_frames): Update. (block_starting_point_at): Make "block" const. * infrun.c (insert_exception_resume_breakpoint): Make "b" const. (check_exception_resume): Update. * guile/scm-frame.c (gdbscm_frame_block): Update. * guile/scm-block.c (gdbscm_lookup_block): Update. * frame.h (get_frame_block): Update. (get_selected_block): Make return type const. * frame.c (frame_id_inner): Update. * f-valprint.c (info_common_command_for_block) (info_common_command): Update. * dwarf2loc.c (dwarf2_find_location_expression) (dwarf_expr_frame_base, dwarf2_compile_expr_to_ax) (locexpr_describe_location_piece): Update. * c-exp.y (%union) <bval>: Now const. * breakpoint.c (resolve_sal_pc): Update. * blockframe.c (get_frame_block):Make return type const. (get_pc_function_start, get_frame_function, find_pc_sect_function) (block_innermost_frame): Update. * block.h (blockvector_for_pc, blockvector_for_pc_sect) (block_for_pc, block_for_pc_sect): Update. * block.c (blockvector_for_pc_sect, blockvector_for_pc): Make 'pblock' const. (block_for_pc_sect, block_for_pc): Make return type const. * ax-gdb.c (gen_expr): Update. * alpha-mdebug-tdep.c (find_proc_desc): Update. * ada-lang.c (ada_read_renaming_var_value): Make 'block' const. (ada_make_symbol_completion_list, ada_add_exceptions_from_frame) (ada_read_var_value): Update. * ada-exp.y (struct name_info) <block>: Now const. (%union): Likewise. (block_lookup): Constify.
2014-05-30Add a TRY_CATCH to get_prev_frame_always to better manage errors during unwind.Andrew Burgess1-1/+14
https://sourceware.org/ml/gdb-patches/2014-05/msg00737.html Currently a MEMORY_ERROR raised during unwinding a frame will cause the unwind to stop with an error message, for example: (gdb) bt #0 breakpt () at amd64-invalid-stack-middle.c:27 #1 0x00000000004008f0 in func5 () at amd64-invalid-stack-middle.c:32 #2 0x0000000000400900 in func4 () at amd64-invalid-stack-middle.c:38 #3 0x0000000000400910 in func3 () at amd64-invalid-stack-middle.c:44 #4 0x0000000000400928 in func2 () at amd64-invalid-stack-middle.c:50 Cannot access memory at address 0x2aaaaaab0000 However, frame #4 is marked as being the end of the stack unwind, so a subsequent request for the backtrace looses the error message, such as: (gdb) bt #0 breakpt () at amd64-invalid-stack-middle.c:27 #1 0x00000000004008f0 in func5 () at amd64-invalid-stack-middle.c:32 #2 0x0000000000400900 in func4 () at amd64-invalid-stack-middle.c:38 #3 0x0000000000400910 in func3 () at amd64-invalid-stack-middle.c:44 #4 0x0000000000400928 in func2 () at amd64-invalid-stack-middle.c:50 When fetching the backtrace, or requesting the stack depth using the MI interface the situation is even worse, the first time a request is made we encounter the memory error and so the MI returns an error instead of the correct result, for example: (gdb) -stack-info-depth ^error,msg="Cannot access memory at address 0x2aaaaaab0000" Or, (gdb) -stack-list-frames ^error,msg="Cannot access memory at address 0x2aaaaaab0000" However, once one of these commands has been used gdb has, internally, walked the stack and figured that out that frame #4 is the bottom of the stack, so the second time an MI command is tried you'll get the "expected" result: (gdb) -stack-info-depth ^done,depth="5" Or, (gdb) -stack-list-frames ^done,stack=[frame={level="0", .. snip lots .. }] After this patch the MEMORY_ERROR encountered during the frame unwind is attached to frame #4 as the stop reason, and is displayed in the CLI each time the backtrace is requested. In the MI, catching the error means that the "expected" result is returned the first time the MI command is issued. So, from the CLI the results of the backtrace will be: (gdb) bt #0 breakpt () at amd64-invalid-stack-middle.c:27 #1 0x00000000004008f0 in func5 () at amd64-invalid-stack-middle.c:32 #2 0x0000000000400900 in func4 () at amd64-invalid-stack-middle.c:38 #3 0x0000000000400910 in func3 () at amd64-invalid-stack-middle.c:44 #4 0x0000000000400928 in func2 () at amd64-invalid-stack-middle.c:50 Backtrace stopped: Cannot access memory at address 0x2aaaaaab0000 Each and every time that the backtrace is requested, while the MI output will similarly be consistently: (gdb) -stack-info-depth ^done,depth="5" Or, (gdb) -stack-list-frames ^done,stack=[frame={level="0", .. snip lots .. }] gdb/ChangeLog: * frame.c (struct frame_info): Add stop_string field. (get_prev_frame_always_1): Renamed from get_prev_frame_always. (get_prev_frame_always): Old content moved into get_prev_frame_always_1. Call get_prev_frame_always_1 inside TRY_CATCH, handle MEMORY_ERROR exceptions. (frame_stop_reason_string): New function definition. * frame.h (unwind_stop_reason_to_string): Extend comment to mention frame_stop_reason_string. (frame_stop_reason_string): New function declaration. * stack.c (frame_info): Switch to frame_stop_reason_string. (backtrace_command_1): Switch to frame_stop_reason_string. * unwind_stop_reason.def: Add UNWIND_MEMORY_ERROR. (LAST_ENTRY): Changed to UNWIND_MEMORY_ERROR. * guile/lib/gdb.scm: Add FRAME_UNWIND_MEMORY_ERROR to export list. gdb/doc/ChangeLog: * guile.texi (Frames In Guile): Mention FRAME_UNWIND_MEMORY_ERROR. * python.texi (Frames In Python): Mention gdb.FRAME_UNWIND_MEMORY_ERROR. gdb/testsuite/ChangeLog: * gdb.arch/amd64-invalid-stack-middle.exp: Update expected results. * gdb.arch/amd64-invalid-stack-top.exp: Likewise.
2014-05-30Rename frame_stop_reason_string to unwind_stop_reason_to_string.Andrew Burgess1-1/+1
https://sourceware.org/ml/gdb-patches/2014-05/msg00721.html This function is confusingly named, the "frame_" in the name implies it somehow is frame dependent, when in reality the function just converts an 'enum unwind_stop_reason' value to a string. gdb/ChangeLog: * frame.c (frame_stop_reason_string): Rename to ... (unwind_stop_reason_to_string): this. * frame.h (frame_stop_reason_string): Rename to ... (unwind_stop_reason_to_string): this. * stack.c (frame_info): Update call to frame_stop_reason_string. (backtrace_command_1): Likewise. * guile/scm-frame.c (gdbscm_unwind_stop_reason_string): Likewise. * python/py-frame.c (gdbpy_frame_stop_reason_string): Likewise.
2014-05-21PR gdb/13860: make -interpreter-exec console "list" behave more like "list".Pedro Alves1-3/+2
I noticed that "list" behaves differently in CLI vs MI. Particularly: $ ./gdb -nx -q ./testsuite/gdb.mi/mi-cli Reading symbols from /home/pedro/gdb/mygit/build/gdb/testsuite/gdb.mi/mi-cli...done. (gdb) start Temporary breakpoint 1 at 0x40054d: file ../../../src/gdb/testsuite/gdb.mi/basics.c, line 62. Starting program: /home/pedro/gdb/mygit/build/gdb/testsuite/gdb.mi/mi-cli Temporary breakpoint 1, main () at ../../../src/gdb/testsuite/gdb.mi/basics.c:62 62 callee1 (2, "A string argument.", 3.5); (gdb) list 57 { 58 } 59 60 main () 61 { 62 callee1 (2, "A string argument.", 3.5); 63 callee1 (2, "A string argument.", 3.5); 64 65 do_nothing (); /* Hello, World! */ 66 (gdb) Note the list started at line 57. IOW, the program stopped at line 62, and GDB centered the list on that. compare with: $ ./gdb -nx -q ./testsuite/gdb.mi/mi-cli -i=mi =thread-group-added,id="i1" ~"Reading symbols from /home/pedro/gdb/mygit/build/gdb/testsuite/gdb.mi/mi-cli..." ~"done.\n" (gdb) start &"start\n" ... ~"\nTemporary breakpoint " ~"1, main () at ../../../src/gdb/testsuite/gdb.mi/basics.c:62\n" ~"62\t callee1 (2, \"A string argument.\", 3.5);\n" *stopped,reason="breakpoint-hit",disp="del",bkptno="1",frame={addr="0x000000000040054d",func="main",args=[],file="../../../src/gdb/testsuite/gdb.mi/basics.c",fullname="/home/pedro/gdb/mygit/src/gdb/testsuite/gdb.mi/basics.c",line="62"},thread-id="1",stopped-threads="all",core="0" =breakpoint-deleted,id="1" (gdb) -interpreter-exec console list ~"62\t callee1 (2, \"A string argument.\", 3.5);\n" ~"63\t callee1 (2, \"A string argument.\", 3.5);\n" ~"64\t\n" ~"65\t do_nothing (); /* Hello, World! */\n" ~"66\t\n" ~"67\t callme (1);\n" ~"68\t callme (2);\n" ~"69\t\n" ~"70\t return 0;\n" ~"71\t}\n" ^done (gdb) Here the list starts at line 62, where the program was stopped. This happens because print_stack_frame, called from both normal_stop and mi_on_normal_stop, is the function responsible for setting the current sal from the selected frame, overrides the PRINT_WHAT argument, and only after that does it decide whether to center the current sal line or not, based on the overridden value, and it will always decide false. (The print_stack_frame call in mi_on_normal_stop is a little different from the call in normal_stop, in that it is an unconditional SRC_AND_LOC call. A future patch will make those uniform.) A previous version of this patch made MI uniform with CLI here, by making print_stack_frame also center when MI is active. That changed the output of a "list" command in mi-cli.exp, to expect line 57 instead of 62, as per the example above. However, looking deeper, that list in question is the first "list" after the program stops, and right after the stop, before the "list", the test did "set listsize 1". Let's try the same thing with the CLI: (gdb) start 62 callee1 (2, "A string argument.", 3.5); (gdb) set listsize 1 (gdb) list 57 { Huh, that's unexpected. Why the 57? It's because print_stack_frame, called in reaction to the breakpoint stop, expecting the next "list" to show 10 lines (the listsize at the time) around line 62, sets the lines listed range to 57-67 (62 +/- 5). If the user changes the listsize before "list", why would we still show that range? Looks bogus to me. So the fix for this whole issue should be delay trying to center the listing to until actually listing, so that the correct listsize can be taken into account. This makes MI and CLI uniform too, as it deletes the center code from print_stack_frame. A series of tests are added to list.exp to cover this. mi-cli.exp was after all correct all along, but it now gains an additional test that lists lines with listsize 10, to ensure the centering is consistent with CLI's. One related Python test changed related output -- it's a test that prints the line number after stopping for a breakpoint, similar to the new list.exp tests. Previously we'd print the stop line minus 5 (due to the premature centering), now we print the stop line. I think that's a good change. Tested on x86_64 Fedora 20. gdb/ 2014-05-21 Pedro Alves <palves@redhat.com> * cli/cli-cmds.c (list_command): Handle the first "list" after the current source line having changed. * frame.h (set_current_sal_from_frame): Remove 'center' parameter. * infrun.c (normal_stop): Adjust call to set_current_sal_from_frame. * source.c (clear_lines_listed_range): New function. (set_current_source_symtab_and_line, identify_source_line): Clear the lines listed range. (line_info): Handle the first "info line" after the current source line having changed. * stack.c (print_stack_frame): Remove center handling. (set_current_sal_from_frame): Remove 'center' parameter. Don't center sal.line. gdb/testsuite/ 2014-05-21 Pedro Alves <palves@redhat.com> * gdb.base/list.exp (build_pattern, test_list): New procedures. Use them to test variations of "list" after reaching a breakpoint. * gdb.mi/mi-cli.exp (line_main_callme_2): New global. Test "list" with listsize 10 after reaching a breakpoint. * gdb.python/python.exp (decode_line current location line number): Adjust expected line number.
2014-04-18Fix PR backtrace/15558Pedro Alves1-0/+7
This PR is about an assertion failure in GDB that can be triggered by setting "backtrace limit" to a value that causes GDB to stop unwinding after an inline frame. In this case, an assertion in inline_frame_this_id will trigger: /* We need a valid frame ID, so we need to be based on a valid frame. (...). */ gdb_assert (frame_id_p (*this_id)); Looking at the function: static void inline_frame_this_id (struct frame_info *this_frame, void **this_cache, struct frame_id *this_id) { struct symbol *func; /* In order to have a stable frame ID for a given inline function, we must get the stack / special addresses from the underlying real frame's this_id method. So we must call get_prev_frame. Because we are inlined into some function, there must be previous frames, so this is safe - as long as we're careful not to create any cycles. */ *this_id = get_frame_id (get_prev_frame (this_frame)); we see we're computing the frame id for the inline frame. If this is an inline frame, which is a virtual frame constructed based on debug info, on top of a real stack frame, we should _always_ be able to find where the frame was inlined into, as that ultimately just means peeling off the virtual frames on top of the real stack frame. If there ultimately was no prev (real) stack frame, then we wouldn't have been able to construct the inline frame either, by design. That's what the assertion catches. So we have an inline frame, we should _always_ be able to compute its ID, even if that means bypassing the user backtrace limits to get at the real stack frame's info. The problem is that inline_frame_id calls get_prev_frame, and that takes user backtrace limits into account. Code that wants to bypass the limits calls get_prev_frame_1 instead. Note how get_prev_frame_1 already skips all checks for inline frames: /* If we are unwinding from an inline frame, all of the below tests were already performed when we unwound from the next non-inline frame. We must skip them, since we can not get THIS_FRAME's ID until we have unwound all the way down to the previous non-inline frame. */ if (get_frame_type (this_frame) == INLINE_FRAME) return get_prev_frame_if_no_cycle (this_frame); And note how the related frame_unwind_caller_id function also uses get_prev_frame_1: struct frame_id frame_unwind_caller_id (struct frame_info *next_frame) { struct frame_info *this_frame; /* Use get_prev_frame_1, and not get_prev_frame. The latter will truncate the frame chain, leading to this function unintentionally returning a null_frame_id (e.g., when a caller requests the frame ID of "main()"s caller. */ next_frame = skip_artificial_frames (next_frame); this_frame = get_prev_frame_1 (next_frame); if (this_frame) return get_frame_id (skip_artificial_frames (this_frame)); else return null_frame_id; } get_prev_frame_1 is currently static in frame.c. As a _1 suffix is not a good name for an extern function, I've renamed it. Tested on x86-64 Fedora 17. gdb/ 2014-04-18 Pedro alves <palves@redhat.com> Tom Tromey <tromey@redhat.com> PR backtrace/15558 * frame.c (get_prev_frame_1): Rename to ... (get_prev_frame_always): ... this, and make extern. Adjust. (skip_artificial_frames): Use get_prev_frame_always. (frame_unwind_caller_id, frame_pop, get_prev_frame) (get_frame_unwind_stop_reason): Adjust to rename. * frame.h (get_prev_frame_always): Declare. * inline-frame.c: Include frame.h. (inline_frame_this_id): Use get_prev_frame_always. gdb/testsuite/ 2014-04-18 Tom Tromey <palves@redhat.com> Pedro alves <tromey@redhat.com> PR backtrace/15558 * gdb.opt/inline-bt.exp: Test backtracing from an inline function with a backtrace limit. * gdb.python/py-frame-inline.exp: Test running to an inline function with a backtrace limit, and printing the newest frame. * gdb.python/py-frame-inline.c (main): Call f.
2014-01-16frame: add frame_id_build_unavailable_stack_specialMarkus Metzger1-0/+8
Add a function to build a frame_id for a frame with unavailable stack and with a special identifier address. 2014-01-16 Markus Metzger <markus.t.metzger@intel.com> * frame.h (frame_id_build_unavailable_stack_special): New. * frame.c (frame_id_build_unavailable_stack_special): New.
2014-01-01Update Copyright year range in all files maintained by GDB.Joel Brobecker1-1/+1
2013-12-17"tfind" across unavailable-stack frames.Pedro Alves1-3/+27
Like when stepping, the current stack frame location is expected to be printed as result of tfind command, if that results in moving to a different function. In tfind_1 we see: if (from_tty && (has_stack_frames () || traceframe_number >= 0)) { enum print_what print_what; /* NOTE: in imitation of the step command, try to determine whether we have made a transition from one function to another. If so, we'll print the "stack frame" (ie. the new function and it's arguments) -- otherwise we'll just show the new source line. */ if (frame_id_eq (old_frame_id, get_frame_id (get_current_frame ()))) print_what = SRC_LINE; else print_what = SRC_AND_LOC; print_stack_frame (get_selected_frame (NULL), 1, print_what, 1); do_displays (); } However, when we haven't collected any registers in the tracepoint (collect $regs), that doesn't actually work: (gdb) tstart (gdb) info tracepoints Num Type Disp Enb Address What 1 tracepoint keep y 0x080483b7 in func0 at ../.././../git/gdb/testsuite/gdb.trace/circ.c:28 collect testload installed on target 2 tracepoint keep y 0x080483bc in func1 at ../.././../git/gdb/testsuite/gdb.trace/circ.c:32 collect testload installed on target (gdb) c Continuing. Breakpoint 3, end () at ../.././../git/gdb/testsuite/gdb.trace/circ.c:72 72 } (gdb) tstop (gdb) tfind start Found trace frame 0, tracepoint 1 #0 func0 () at ../.././../git/gdb/testsuite/gdb.trace/circ.c:28 28 } (gdb) tfind Found trace frame 1, tracepoint 2 32 } (gdb) When we don't have info about the stack available (UNWIND_UNAVAILABLE), frames end up with outer_frame_id as frame ID. And in the scenario above, the issue is that both frames before and after the second tfind (the frames for func0 an func1) have the same id (outer_frame_id), so the frame_id_eq check returns false, even though the frames were of different functions. GDB knows that, because the PC is inferred from the tracepoint's address, even if no registers were collected. To fix this, this patch adds support for frame ids with a valid code address, but <unavailable> stack address, and then makes the unwinders use that instead of the catch-all outer_frame_id for such frames. The frame_id_eq check in tfind_1 then automatically does the right thing as expected. I tested with --directory=gdb.trace/ , before/after the patch, and compared the resulting gdb.logs, then adjusted the tests to expect the extra output that came out. Turns out that was only circ.exp, the original test that actually brought this issue to light. Tested on x86_64 Fedora 17, native and gdbserver. gdb/ 2013-12-17 Pedro Alves <palves@redhat.com> * frame.h (enum frame_id_stack_status): New enum. (struct frame_id) <stack_addr>: Adjust comment. <stack_addr_p>: Delete field, replaced with ... <stack_status>: ... this new field. (frame_id_build_unavailable_stack): Declare. * frame.c (frame_addr_hash, fprint_field, outer_frame_id) (frame_id_build_special): Adjust. (frame_id_build_unavailable_stack): New function. (frame_id_build, frame_id_build_wild): Adjust. (frame_id_p, frame_id_eq, frame_id_inner): Adjust to take into account frames with unavailable stack. * amd64-tdep.c (amd64_frame_this_id) (amd64_sigtramp_frame_this_id, amd64_epilogue_frame_this_id): Use frame_id_build_unavailable_stack. * dwarf2-frame.c (dwarf2_frame_this_id): Likewise. * i386-tdep.c (i386_frame_this_id, i386_epilogue_frame_this_id) (i386_sigtramp_frame_this_id): Likewise. gdb/testsuite/ 2013-12-17 Pedro Alves <palves@redhat.com> * gdb.trace/circ.exp: Expect frame info to be printed when switching between frames with unavailable stack, but different functions.
2013-12-06Fix "info frame" in the outermost frame.Pedro Alves1-8/+0
Doing "info frame" in the outermost frame, when that was indicated by the next frame saying the unwound PC is undefined/not saved, results in error and incomplete output: (gdb) bt #0 thread_function0 (arg=0x0) at threads.c:63 #1 0x00000034cf407d14 in start_thread (arg=0x7ffff7fcb700) at pthread_create.c:309 #2 0x000000323d4f168d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115 (gdb) frame 2 #2 0x000000323d4f168d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115 115 call *%rax (gdb) info frame Stack level 2, frame at 0x0: rip = 0x323d4f168d in clone (../sysdeps/unix/sysv/linux/x86_64/clone.S:115); saved rip Register 16 was not saved (gdb) Not saved register values are treated as optimized out values internally throughout. stack.c:frame_info is handing unvailable values, but not optimized out ones. The patch deletes the frame_unwind_caller_pc_if_available wrapper function and instead lets errors propagate to frame_info (it's only user). As frame_unwind_pc now needs to be able to handle and cache two different error scenarios, the prev_pc.p variable is replaced with an enumeration. (FWIW, I looked into making gdbarch_unwind_pc or a variant return struct value's instead, but it results in lots of boxing and unboxing for no real gain -- e.g., the mips and arm implementations need to do computation on the unboxed PC value. Might as well throw an error on first attempt to get at invalid contents.) After the patch, we get: (gdb) info frame Stack level 2, frame at 0x0: rip = 0x323d4f168d in clone (../sysdeps/unix/sysv/linux/x86_64/clone.S:115); saved rip = <not saved> Outermost frame: outermost caller of frame at 0x7ffff7fcafc0 source language asm. Arglist at 0x7ffff7fcafb8, args: Locals at 0x7ffff7fcafb8, Previous frame's sp is 0x7ffff7fcafc8 (gdb) A new test is added. It's based off dw2-reg-undefined.exp, and tweaked to mark the return address (rip) of "stop_frame" as undefined. Tested on x86_64 Fedora 17. gdb/ 2013-12-06 Pedro Alves <palves@redhat.com> * frame.c (enum cached_copy_status): New enum. (struct frame_info) <prev_pc.p>: Change type to enum cached_copy_status. (fprint_frame): Handle not saved and unavailable prev_pc values. (frame_unwind_pc_if_available): Delete and merge contents into ... (frame_unwind_pc): ... here. Handle OPTIMIZED_OUT_ERROR. Adjust to use enum cached_copy_status. (frame_unwind_caller_pc_if_available): Delete. (create_new_frame): Adjust. * frame.h (frame_unwind_caller_pc_if_available): Delete declaration. * stack.c (frame_info): Use frame_unwind_caller_pc instead of frame_unwind_caller_pc_if_available, and handle NOT_AVAILABLE_ERROR and OPTIMIZED_OUT_ERROR errors. * valprint.c (val_print_optimized_out): Use val_print_not_saved. (val_print_not_saved): New function. * valprint.h (val_print_not_saved): Declare. gdb/testsuite/ 2013-12-06 Pedro Alves <palves@redhat.com> * gdb.dwarf2/dw2-undefined-ret-addr.S: New file. * gdb.dwarf2/dw2-undefined-ret-addr.c: New file. * gdb.dwarf2/dw2-undefined-ret-addr.exp: New file.
2013-09-17PR gdb/15911: "info threads" changes the default source and line (for ↵Pedro Alves1-2/+4
"break", "list") "info threads" changes the default source for "break" and "list", to whatever the location of the first/bottom thread in the thread list is... (gdb) b start (gdb) c ... (gdb) list *lists "start"* (gdb) b 23 Breakpoint 3 at 0x400614: file test.c, line 23. (gdb) info threads Id Target Id Frame * 2 Thread 0x7ffff7fcb700 (LWP 1760) "test" start (arg=0x0) at test.c:23 1 Thread 0x7ffff7fcc740 (LWP 1748) "test" 0x000000323dc08e60 in pthread_join (threadid=140737353922304, thread_return=0x0) at pthread_join.c:93 (gdb) b 23 Breakpoint 4 at 0x323dc08d90: file pthread_join.c, line 23. ^^^^^^^^^^^^^^^ (gdb) list 93 lll_wait_tid (pd->tid); 94 95 96 /* Restore cancellation mode. */ 97 CANCEL_RESET (oldtype); 98 99 /* Remove the handler. */ 100 pthread_cleanup_pop (0); 101 102 The issue is that print_stack_frame always sets the current sal to the frame's sal. print_frame_info (which print_stack_frame calls to do most of the work) also sets the last displayed sal, but only if print_what isn't LOCATION. Now the call in question, from within thread.c:print_thread_info, does pass in LOCATION as print_what, but print_stack_frame doesn't have the same check print_frame_info has. We could consider adding it, but setting these globals depending on print_what isn't very clean, IMO. What we have is two logically distinct operations mixed in the same function(s): #1 - print frame, in the format specified by {print_what, print_level and print_args}. #2 - We're displaying a frame to the user, and I want the default sal to point here, because the program stopped here, or the user did some context-changing command (up, down, etc.). So I added a new parameter to print_stack_frame & friends for point #2, and went through all calls in the tree adjusting as necessary. Tested on x86_64 Fedora 17. gdb/ 2013-09-17 Pedro Alves <palves@redhat.com> PR gdb/15911 * ada-tasks.c (task_command_1): Adjust call to print_stack_frame. * bsd-kvm.c (bsd_kvm_open, bsd_kvm_proc_cmd, bsd_kvm_pcb_cmd): * corelow.c (core_open): * frame.h (print_stack_frame, print_frame_info): New 'set_current_sal' parameter. * infcmd.c (finish_command, kill_command): Adjust call to print_stack_frame. * inferior.c (inferior_command): Likewise. * infrun.c (normal_stop): Likewise. * linux-fork.c (linux_fork_context): Likewise. * record-full.c (record_full_goto_entry, record_full_restore): Likewise. * remote-mips.c (common_open): Likewise. * stack.c (print_stack_frame): New 'set_current_sal' parameter. Use it. (print_frame_info): New 'set_current_sal' parameter. Set the last displayed sal depending on the new paremeter instead of looking at print_what. (backtrace_command_1, select_and_print_frame, frame_command) (current_frame_command, up_command, down_command): Adjust call to print_stack_frame. * thread.c (print_thread_info, restore_selected_frame) (do_captured_thread_select): Adjust call to print_stack_frame. * tracepoint.c (tfind_1): Likewise. * mi/mi-cmd-stack.c (mi_cmd_stack_list_frames) (mi_cmd_stack_info_frame): Likewise. * mi/mi-interp.c (mi_on_normal_stop): Likewise. * mi/mi-main.c (mi_cmd_exec_return, mi_cmd_trace_find): Likewise. gdb/testsuite/ * gdb.threads/info-threads-cur-sal-2.c: New file. * gdb.threads/info-threads-cur-sal.c: New file. * gdb.threads/info-threads-cur-sal.exp: New file.
2013-08-30frame.h: Delete stale declaration.Pedro Alves1-3/+0
This is declaring a function that no longer exists. It was deleted back in 2003-01-13: ... show_and_print_stack_frame, print_only_stack_frame_stub, print_only_stack_frame): Delete functions. gdb/ 2013-08-30 Pedro Alves <palves@redhat.com> * frame.h (show_and_print_stack_frame): Delete declaration.
2013-08-08gdb/Yao Qi1-0/+2
* frame.h (read_frame_local): Declare. * mi/mi-cmd-stack.c (list_args_or_locals): Call read_frame_local. * stack.c (read_frame_local): New. gdb/testsuite/ * gdb.trace/mi-trace-unavailable.exp: Don't set "print entry-values" to "no". (test_trace_unavailable): Set various values to "print entry-values" to test that the output of '-stack-list-locals' is not affected, and then set set "print entry-values" to "no".
2013-02-01Garbage collect deprecated_pc_in_call_dummyPedro Alves1-2/+0
I noticed there are no users of deprecated_pc_in_call_dummy left in the tree. The last user was ARM. Usage removed here: http://sourceware.org/ml/gdb-patches/2010-03/msg00820.html This deletes the function. 2013-02-01 Pedro Alves <palves@redhat.com> * dummy-frame.c (deprecated_pc_in_call_dummy): Delete function. * frame.h (deprecated_pc_in_call_dummy): Delete declaration.
2013-01-01Update years in copyright notice for the GDB files.Joel Brobecker1-2/+1
Two modifications: 1. The addition of 2013 to the copyright year range for every file; 2. The use of a single year range, instead of potentially multiple year ranges, as approved by the FSF.
2012-11-12rename frame_register_read into deprecated_frame_register_read.Joel Brobecker1-1/+1
gdb/ChangeLog: * frame.h (deprecated_frame_register_read): Renames frame_register_read. * frame.c (deprecated_frame_register_read): Renames frame_register_read. Update all callers. * i386-tdep.c: Update all callers of frame_register_read. * infcmd.c: Likewise. * jit.c: Likewise. * mips-tdep.c: Likewise. * mt-tdep.c: Likewise. * sh64-tdep.c: Likewise.
2012-11-12Document replacement for frame_register_read (deprecated).Joel Brobecker1-12/+0
gdb/ChangeLog: * frame.h (frame_register_read): Remove FIXME comment. * frame.c (frame_register_read): Add suggestion explaining which function to use in place of this one.
2012-09-17gdb/Jan Kratochvil1-6/+9
Code cleanup - rename 'inline' depth to 'artificial' depth. * breakpoint.c (set_momentary_breakpoint): Rename at a caller to frame_id_artificial_p, extend the comment. * dwarf2-frame-tailcall.c (tailcall_frame_this_id): Rename at a user. * frame.c (fprint_frame_id): Rename at a user, change debug output text to "artificial=". (skip_inlined_frames): Rename to ... (skip_artificial_frames): ... here. Extend the comment. (get_stack_frame_id, frame_unwind_caller_id): Rename at a caller. (frame_id_inlined_p): Rename to ... (frame_id_artificial_p): ... here. Rename at a user. (frame_id_eq, frame_id_inner, frame_unwind_caller_pc) (frame_unwind_caller_pc_if_available, frame_unwind_caller_arch): Rename at a user. * frame.h (struct frame_id): Rename inline_depth to artificial_depth. Extend the comment. (frame_id_inlined_p): Rename to ... (frame_id_artificial_p): ... here. * inline-frame.c (inline_frame_this_id): Rename at a user.
2012-08-02gdb/Yao Qi1-1/+1
* dwarf2loc.c (entry_values_debug): Add 'unsigned'. (_initialize_dwarf2loc): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * dwarf2loc.h: Update the declaration of 'entry_values_debug'. * dwarf2read.c (dwarf2_die_debug): Add 'unsigned'. (_initialize_dwarf2_read): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * darwin-nat.c (dwarwin_debug_flag): Add 'unsigned'. (_initialize_darwin_inferior): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * frame.c (frame_debug): Add 'unsigned'. (_intialize_frame): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * frame.h: Update the declaration of 'frame_debug'. * gdbtypes.c (overload_debug): Add 'unsigned'. (_initialize_gdbtypes): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * inferior.h: Update declaration of 'debug_infrun'. * infrun.c (debug_infrun): Add 'unsigned'. (_initialize_infrun): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * jit.c (jit_debug): Add 'unsigned'. (_initialize_jit): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * linux-nat.c (debug_linux_nat): Add 'unsigned'. (_initialize_linux_nat): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * linux-thread-db.c (libthread_db_debug): Add 'unsigned'. (_initialize_thread_db): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * machoread.c (mach_o_debug_level): Add 'unsigned'. (_initialize_machoread): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * mi/mi-cmd-var.c: Update the declaration of 'varobjdebug'. * microblaze-tdep.c (microblaze_debug_flag): Add 'unsigned'. (_initialize_microblaze_tdep): Call add_setshow_zuinteger_cmd intead of add_setshow_zinteger_cmd. * mips-tdep.c (mips_debug): Add 'unsigned'. (_initialize_mips_tdep): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * monitor.c (monitor_debug): Add 'unsigned'. (_initialize_remote_monitors): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * observer.c (observer_debug): Add 'unsigned'. (_initialize_observer): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * parse.c (expressiondebug): Add 'unsigned'. (_initialize_parse): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * record.c (record_debug): Add 'unsigned'. (_initialize_record): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * record.h: Update the declaration of 'record_debug'. * stap-probe.c (stap_expression_debug): Add 'unsigned'. (_initialize_stap_probe): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * serial.c (global_serial_debug_p): Add 'unsigned'. (_initialize_serial): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * solib-dsbt.c (solib_dsbt_debug): Add 'unsigned'. (_initialize_dsbt_solib): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * solib-frv.c (solib_frv_debug): Add 'unsigned'. (_initialize_frv_solib): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * target.c (targetdebug): Add 'unsigned'. (initialize_targets): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * valops.c (overload_debug): Add 'unsigned'. * varobj.c (varobjdebug): Add 'unsigned'. (_initialize_varobj): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * xtensa-tdep.c (xtensa_debug_level): Add 'unsigned'. (_initialize_xtensa_tdep): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * arch-utils.h: Remove the declaration of 'gdbarch_debug'. * gdbarch.sh (gdbarch_debug): Add 'unsigned'. (extern void _initialize_gdbarch): Call add_setshow_zuinteger_cmd instead of add_setshow_zinteger_cmd. * gdbarch.c, gdbarch.h: Re-generated.