| /* CLI Definitions for GDB, the GNU debugger. |
| |
| Copyright (C) 2002-2016 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #include "defs.h" |
| #include "cli-interp.h" |
| #include "interps.h" |
| #include "event-top.h" |
| #include "ui-out.h" |
| #include "cli-out.h" |
| #include "top.h" /* for "execute_command" */ |
| #include "event-top.h" |
| #include "infrun.h" |
| #include "observer.h" |
| #include "gdbthread.h" |
| #include "thread-fsm.h" |
| |
| /* The console interpreter. */ |
| struct cli_interp |
| { |
| /* The ui_out for the console interpreter. */ |
| struct ui_out *cli_uiout; |
| }; |
| |
| /* Returns the INTERP's data cast as cli_interp if INTERP is a CLI, |
| and returns NULL otherwise. */ |
| |
| static struct cli_interp * |
| as_cli_interp (struct interp *interp) |
| { |
| if (strcmp (interp_name (interp), INTERP_CONSOLE) == 0) |
| return (struct cli_interp *) interp_data (interp); |
| return NULL; |
| } |
| |
| /* Longjmp-safe wrapper for "execute_command". */ |
| static struct gdb_exception safe_execute_command (struct ui_out *uiout, |
| char *command, |
| int from_tty); |
| |
| /* See cli-interp.h. |
| |
| Breakpoint hits should always be mirrored to a console. Deciding |
| what to mirror to a console wrt to breakpoints and random stops |
| gets messy real fast. E.g., say "s" trips on a breakpoint. We'd |
| clearly want to mirror the event to the console in this case. But |
| what about more complicated cases like "s&; thread n; s&", and one |
| of those steps spawning a new thread, and that thread hitting a |
| breakpoint? It's impossible in general to track whether the thread |
| had any relation to the commands that had been executed. So we |
| just simplify and always mirror breakpoints and random events to |
| all consoles. |
| |
| OTOH, we should print the source line to the console when stepping |
| or other similar commands, iff the step was started by that console |
| (or in MI's case, by a console command), but not if it was started |
| with MI's -exec-step or similar. */ |
| |
| int |
| should_print_stop_to_console (struct interp *console_interp, |
| struct thread_info *tp) |
| { |
| if ((bpstat_what (tp->control.stop_bpstat).main_action |
| == BPSTAT_WHAT_STOP_NOISY) |
| || tp->thread_fsm == NULL |
| || tp->thread_fsm->command_interp == console_interp |
| || !thread_fsm_finished_p (tp->thread_fsm)) |
| return 1; |
| return 0; |
| } |
| |
| /* Observers for several run control events. If the interpreter is |
| quiet (i.e., another interpreter is being run with |
| interpreter-exec), print nothing. */ |
| |
| /* Observer for the normal_stop notification. */ |
| |
| static void |
| cli_on_normal_stop (struct bpstats *bs, int print_frame) |
| { |
| struct switch_thru_all_uis state; |
| |
| if (!print_frame) |
| return; |
| |
| SWITCH_THRU_ALL_UIS (state) |
| { |
| struct interp *interp = top_level_interpreter (); |
| struct cli_interp *cli = as_cli_interp (interp); |
| struct thread_info *thread; |
| |
| if (cli == NULL) |
| continue; |
| |
| thread = inferior_thread (); |
| if (should_print_stop_to_console (interp, thread)) |
| print_stop_event (cli->cli_uiout); |
| } |
| } |
| |
| /* Observer for the signal_received notification. */ |
| |
| static void |
| cli_on_signal_received (enum gdb_signal siggnal) |
| { |
| struct switch_thru_all_uis state; |
| |
| SWITCH_THRU_ALL_UIS (state) |
| { |
| struct cli_interp *cli = as_cli_interp (top_level_interpreter ()); |
| |
| if (cli == NULL) |
| continue; |
| |
| print_signal_received_reason (cli->cli_uiout, siggnal); |
| } |
| } |
| |
| /* Observer for the end_stepping_range notification. */ |
| |
| static void |
| cli_on_end_stepping_range (void) |
| { |
| struct switch_thru_all_uis state; |
| |
| SWITCH_THRU_ALL_UIS (state) |
| { |
| struct cli_interp *cli = as_cli_interp (top_level_interpreter ()); |
| |
| if (cli == NULL) |
| continue; |
| |
| print_end_stepping_range_reason (cli->cli_uiout); |
| } |
| } |
| |
| /* Observer for the signalled notification. */ |
| |
| static void |
| cli_on_signal_exited (enum gdb_signal siggnal) |
| { |
| struct switch_thru_all_uis state; |
| |
| SWITCH_THRU_ALL_UIS (state) |
| { |
| struct cli_interp *cli = as_cli_interp (top_level_interpreter ()); |
| |
| if (cli == NULL) |
| continue; |
| |
| print_signal_exited_reason (cli->cli_uiout, siggnal); |
| } |
| } |
| |
| /* Observer for the exited notification. */ |
| |
| static void |
| cli_on_exited (int exitstatus) |
| { |
| struct switch_thru_all_uis state; |
| |
| SWITCH_THRU_ALL_UIS (state) |
| { |
| struct cli_interp *cli = as_cli_interp (top_level_interpreter ()); |
| |
| if (cli == NULL) |
| continue; |
| |
| print_exited_reason (cli->cli_uiout, exitstatus); |
| } |
| } |
| |
| /* Observer for the no_history notification. */ |
| |
| static void |
| cli_on_no_history (void) |
| { |
| struct switch_thru_all_uis state; |
| |
| SWITCH_THRU_ALL_UIS (state) |
| { |
| struct cli_interp *cli = as_cli_interp (top_level_interpreter ()); |
| |
| if (cli == NULL) |
| continue; |
| |
| print_no_history_reason (cli->cli_uiout); |
| } |
| } |
| |
| /* Observer for the sync_execution_done notification. */ |
| |
| static void |
| cli_on_sync_execution_done (void) |
| { |
| struct cli_interp *cli = as_cli_interp (top_level_interpreter ()); |
| |
| if (cli == NULL) |
| return; |
| |
| display_gdb_prompt (NULL); |
| } |
| |
| /* Observer for the command_error notification. */ |
| |
| static void |
| cli_on_command_error (void) |
| { |
| struct cli_interp *cli = as_cli_interp (top_level_interpreter ()); |
| |
| if (cli == NULL) |
| return; |
| |
| display_gdb_prompt (NULL); |
| } |
| |
| /* pre_command_loop implementation. */ |
| |
| void |
| cli_interpreter_pre_command_loop (struct interp *self) |
| { |
| display_gdb_prompt (0); |
| } |
| |
| /* These implement the cli out interpreter: */ |
| |
| static void * |
| cli_interpreter_init (struct interp *self, int top_level) |
| { |
| return interp_data (self); |
| } |
| |
| static int |
| cli_interpreter_resume (void *data) |
| { |
| struct ui *ui = current_ui; |
| struct cli_interp *cli = (struct cli_interp *) data; |
| struct ui_file *stream; |
| |
| /*sync_execution = 1; */ |
| |
| /* gdb_setup_readline will change gdb_stdout. If the CLI was |
| previously writing to gdb_stdout, then set it to the new |
| gdb_stdout afterwards. */ |
| |
| stream = cli_out_set_stream (cli->cli_uiout, gdb_stdout); |
| if (stream != gdb_stdout) |
| { |
| cli_out_set_stream (cli->cli_uiout, stream); |
| stream = NULL; |
| } |
| |
| gdb_setup_readline (1); |
| |
| ui->input_handler = command_line_handler; |
| |
| if (stream != NULL) |
| cli_out_set_stream (cli->cli_uiout, gdb_stdout); |
| |
| return 1; |
| } |
| |
| static int |
| cli_interpreter_suspend (void *data) |
| { |
| gdb_disable_readline (); |
| return 1; |
| } |
| |
| static struct gdb_exception |
| cli_interpreter_exec (void *data, const char *command_str) |
| { |
| struct cli_interp *cli = (struct cli_interp *) data; |
| struct ui_file *old_stream; |
| struct gdb_exception result; |
| |
| /* FIXME: cagney/2003-02-01: Need to const char *propogate |
| safe_execute_command. */ |
| char *str = (char *) alloca (strlen (command_str) + 1); |
| strcpy (str, command_str); |
| |
| /* gdb_stdout could change between the time cli_uiout was |
| initialized and now. Since we're probably using a different |
| interpreter which has a new ui_file for gdb_stdout, use that one |
| instead of the default. |
| |
| It is important that it gets reset everytime, since the user |
| could set gdb to use a different interpreter. */ |
| old_stream = cli_out_set_stream (cli->cli_uiout, gdb_stdout); |
| result = safe_execute_command (cli->cli_uiout, str, 1); |
| cli_out_set_stream (cli->cli_uiout, old_stream); |
| return result; |
| } |
| |
| int |
| cli_interpreter_supports_command_editing (struct interp *interp) |
| { |
| return 1; |
| } |
| |
| static struct gdb_exception |
| safe_execute_command (struct ui_out *command_uiout, char *command, int from_tty) |
| { |
| struct gdb_exception e = exception_none; |
| struct ui_out *saved_uiout; |
| |
| /* Save and override the global ``struct ui_out'' builder. */ |
| saved_uiout = current_uiout; |
| current_uiout = command_uiout; |
| |
| TRY |
| { |
| execute_command (command, from_tty); |
| } |
| CATCH (exception, RETURN_MASK_ALL) |
| { |
| e = exception; |
| } |
| END_CATCH |
| |
| /* Restore the global builder. */ |
| current_uiout = saved_uiout; |
| |
| /* FIXME: cagney/2005-01-13: This shouldn't be needed. Instead the |
| caller should print the exception. */ |
| exception_print (gdb_stderr, e); |
| return e; |
| } |
| |
| static struct ui_out * |
| cli_ui_out (struct interp *self) |
| { |
| struct cli_interp *cli = (struct cli_interp *) interp_data (self); |
| |
| return cli->cli_uiout; |
| } |
| |
| /* The CLI interpreter's vtable. */ |
| |
| static const struct interp_procs cli_interp_procs = { |
| cli_interpreter_init, /* init_proc */ |
| cli_interpreter_resume, /* resume_proc */ |
| cli_interpreter_suspend, /* suspend_proc */ |
| cli_interpreter_exec, /* exec_proc */ |
| cli_ui_out, /* ui_out_proc */ |
| NULL, /* set_logging_proc */ |
| cli_interpreter_pre_command_loop, /* pre_command_loop_proc */ |
| cli_interpreter_supports_command_editing, /* supports_command_editing_proc */ |
| }; |
| |
| /* Factory for CLI interpreters. */ |
| |
| static struct interp * |
| cli_interp_factory (const char *name) |
| { |
| struct cli_interp *cli = XNEW (struct cli_interp); |
| |
| /* Create a default uiout builder for the CLI. */ |
| cli->cli_uiout = cli_out_new (gdb_stdout); |
| |
| return interp_new (name, &cli_interp_procs, cli); |
| } |
| |
| /* Standard gdb initialization hook. */ |
| extern initialize_file_ftype _initialize_cli_interp; /* -Wmissing-prototypes */ |
| |
| void |
| _initialize_cli_interp (void) |
| { |
| interp_factory_register (INTERP_CONSOLE, cli_interp_factory); |
| |
| /* If changing this, remember to update tui-interp.c as well. */ |
| observer_attach_normal_stop (cli_on_normal_stop); |
| observer_attach_end_stepping_range (cli_on_end_stepping_range); |
| observer_attach_signal_received (cli_on_signal_received); |
| observer_attach_signal_exited (cli_on_signal_exited); |
| observer_attach_exited (cli_on_exited); |
| observer_attach_no_history (cli_on_no_history); |
| observer_attach_sync_execution_done (cli_on_sync_execution_done); |
| observer_attach_command_error (cli_on_command_error); |
| } |