230 lines
6.1 KiB
C
230 lines
6.1 KiB
C
/* CLI Definitions for GDB, the GNU debugger.
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Copyright (C) 2002-2015 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "interps.h"
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#include "event-top.h"
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#include "ui-out.h"
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#include "cli-out.h"
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#include "top.h" /* for "execute_command" */
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#include "infrun.h"
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#include "observer.h"
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/* These are the ui_out and the interpreter for the console
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interpreter. */
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struct ui_out *cli_uiout;
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static struct interp *cli_interp;
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/* Longjmp-safe wrapper for "execute_command". */
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static struct gdb_exception safe_execute_command (struct ui_out *uiout,
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char *command,
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int from_tty);
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/* Observers for several run control events. If the interpreter is
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quiet (i.e., another interpreter is being run with
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interpreter-exec), print nothing. */
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/* Observer for the signal_received notification. */
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static void
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cli_on_signal_received (enum gdb_signal siggnal)
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{
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if (!interp_quiet_p (cli_interp))
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print_signal_received_reason (cli_uiout, siggnal);
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}
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/* Observer for the end_stepping_range notification. */
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static void
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cli_on_end_stepping_range (void)
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{
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if (!interp_quiet_p (cli_interp))
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print_end_stepping_range_reason (cli_uiout);
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}
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/* Observer for the signalled notification. */
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static void
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cli_on_signal_exited (enum gdb_signal siggnal)
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{
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if (!interp_quiet_p (cli_interp))
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print_signal_exited_reason (cli_uiout, siggnal);
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}
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/* Observer for the exited notification. */
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static void
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cli_on_exited (int exitstatus)
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{
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if (!interp_quiet_p (cli_interp))
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print_exited_reason (cli_uiout, exitstatus);
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}
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/* Observer for the no_history notification. */
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static void
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cli_on_no_history (void)
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{
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if (!interp_quiet_p (cli_interp))
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print_no_history_reason (cli_uiout);
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}
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/* Observer for the sync_execution_done notification. */
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static void
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cli_on_sync_execution_done (void)
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{
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if (!interp_quiet_p (cli_interp))
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display_gdb_prompt (NULL);
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}
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/* Observer for the command_error notification. */
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static void
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cli_on_command_error (void)
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{
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if (!interp_quiet_p (cli_interp))
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display_gdb_prompt (NULL);
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}
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/* These implement the cli out interpreter: */
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static void *
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cli_interpreter_init (struct interp *self, int top_level)
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{
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/* If changing this, remember to update tui-interp.c as well. */
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observer_attach_end_stepping_range (cli_on_end_stepping_range);
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observer_attach_signal_received (cli_on_signal_received);
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observer_attach_signal_exited (cli_on_signal_exited);
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observer_attach_exited (cli_on_exited);
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observer_attach_no_history (cli_on_no_history);
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observer_attach_sync_execution_done (cli_on_sync_execution_done);
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observer_attach_command_error (cli_on_command_error);
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return NULL;
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}
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static int
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cli_interpreter_resume (void *data)
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{
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struct ui_file *stream;
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/*sync_execution = 1; */
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/* gdb_setup_readline will change gdb_stdout. If the CLI was
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previously writing to gdb_stdout, then set it to the new
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gdb_stdout afterwards. */
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stream = cli_out_set_stream (cli_uiout, gdb_stdout);
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if (stream != gdb_stdout)
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{
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cli_out_set_stream (cli_uiout, stream);
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stream = NULL;
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}
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gdb_setup_readline ();
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if (stream != NULL)
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cli_out_set_stream (cli_uiout, gdb_stdout);
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return 1;
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}
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static int
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cli_interpreter_suspend (void *data)
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{
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gdb_disable_readline ();
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return 1;
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}
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static struct gdb_exception
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cli_interpreter_exec (void *data, const char *command_str)
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{
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struct ui_file *old_stream;
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struct gdb_exception result;
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/* FIXME: cagney/2003-02-01: Need to const char *propogate
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safe_execute_command. */
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char *str = strcpy (alloca (strlen (command_str) + 1), command_str);
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/* gdb_stdout could change between the time cli_uiout was
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initialized and now. Since we're probably using a different
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interpreter which has a new ui_file for gdb_stdout, use that one
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instead of the default.
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It is important that it gets reset everytime, since the user
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could set gdb to use a different interpreter. */
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old_stream = cli_out_set_stream (cli_uiout, gdb_stdout);
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result = safe_execute_command (cli_uiout, str, 1);
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cli_out_set_stream (cli_uiout, old_stream);
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return result;
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}
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static struct gdb_exception
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safe_execute_command (struct ui_out *command_uiout, char *command, int from_tty)
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{
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volatile struct gdb_exception e;
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struct ui_out *saved_uiout;
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/* Save and override the global ``struct ui_out'' builder. */
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saved_uiout = current_uiout;
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current_uiout = command_uiout;
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TRY_CATCH (e, RETURN_MASK_ALL)
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{
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execute_command (command, from_tty);
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}
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/* Restore the global builder. */
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current_uiout = saved_uiout;
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/* FIXME: cagney/2005-01-13: This shouldn't be needed. Instead the
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caller should print the exception. */
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exception_print (gdb_stderr, e);
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return e;
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}
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static struct ui_out *
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cli_ui_out (struct interp *self)
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{
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return cli_uiout;
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}
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/* Standard gdb initialization hook. */
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extern initialize_file_ftype _initialize_cli_interp; /* -Wmissing-prototypes */
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void
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_initialize_cli_interp (void)
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{
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static const struct interp_procs procs = {
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cli_interpreter_init, /* init_proc */
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cli_interpreter_resume, /* resume_proc */
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cli_interpreter_suspend, /* suspend_proc */
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cli_interpreter_exec, /* exec_proc */
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cli_ui_out, /* ui_out_proc */
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NULL, /* set_logging_proc */
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cli_command_loop /* command_loop_proc */
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};
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/* Create a default uiout builder for the CLI. */
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cli_uiout = cli_out_new (gdb_stdout);
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cli_interp = interp_new (INTERP_CONSOLE, &procs);
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interp_add (cli_interp);
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}
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