/* CLI Definitions for GDB, the GNU debugger. Copyright (C) 2002-2015 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 . */ #include "defs.h" #include "interps.h" #include "event-top.h" #include "ui-out.h" #include "cli-out.h" #include "top.h" /* for "execute_command" */ #include "infrun.h" #include "observer.h" /* These are the ui_out and the interpreter for the console interpreter. */ struct ui_out *cli_uiout; static struct interp *cli_interp; /* Longjmp-safe wrapper for "execute_command". */ static struct gdb_exception safe_execute_command (struct ui_out *uiout, char *command, int from_tty); /* 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 signal_received notification. */ static void cli_on_signal_received (enum gdb_signal siggnal) { if (!interp_quiet_p (cli_interp)) print_signal_received_reason (cli_uiout, siggnal); } /* Observer for the end_stepping_range notification. */ static void cli_on_end_stepping_range (void) { if (!interp_quiet_p (cli_interp)) print_end_stepping_range_reason (cli_uiout); } /* Observer for the signalled notification. */ static void cli_on_signal_exited (enum gdb_signal siggnal) { if (!interp_quiet_p (cli_interp)) print_signal_exited_reason (cli_uiout, siggnal); } /* Observer for the exited notification. */ static void cli_on_exited (int exitstatus) { if (!interp_quiet_p (cli_interp)) print_exited_reason (cli_uiout, exitstatus); } /* Observer for the no_history notification. */ static void cli_on_no_history (void) { if (!interp_quiet_p (cli_interp)) print_no_history_reason (cli_uiout); } /* Observer for the sync_execution_done notification. */ static void cli_on_sync_execution_done (void) { if (!interp_quiet_p (cli_interp)) display_gdb_prompt (NULL); } /* Observer for the command_error notification. */ static void cli_on_command_error (void) { if (!interp_quiet_p (cli_interp)) display_gdb_prompt (NULL); } /* These implement the cli out interpreter: */ static void * cli_interpreter_init (struct interp *self, int top_level) { /* If changing this, remember to update tui-interp.c as well. */ 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); return NULL; } static int cli_interpreter_resume (void *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_uiout, gdb_stdout); if (stream != gdb_stdout) { cli_out_set_stream (cli_uiout, stream); stream = NULL; } gdb_setup_readline (); if (stream != NULL) cli_out_set_stream (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 ui_file *old_stream; struct gdb_exception result; /* FIXME: cagney/2003-02-01: Need to const char *propogate safe_execute_command. */ char *str = strcpy (alloca (strlen (command_str) + 1), 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_uiout, gdb_stdout); result = safe_execute_command (cli_uiout, str, 1); cli_out_set_stream (cli_uiout, old_stream); return result; } 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) { return cli_uiout; } /* Standard gdb initialization hook. */ extern initialize_file_ftype _initialize_cli_interp; /* -Wmissing-prototypes */ void _initialize_cli_interp (void) { static const struct interp_procs 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_command_loop /* command_loop_proc */ }; /* Create a default uiout builder for the CLI. */ cli_uiout = cli_out_new (gdb_stdout); cli_interp = interp_new (INTERP_CONSOLE, &procs); interp_add (cli_interp); }