/* Manages interpreters for GDB, the GNU debugger.
- Copyright 2000, 2002, 2003 Free Software Foundation, Inc.
+ Copyright (C) 2000-2014 Free Software Foundation, Inc.
Written by Jim Ingham <jingham@apple.com> of Apple Computer, Inc.
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 2 of the License, or
+ 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,
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, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* This is just a first cut at separating out the "interpreter"
functions of gdb into self-contained modules. There are a couple
#include "event-top.h"
#include "interps.h"
#include "completer.h"
-#include "gdb_string.h"
-#include "gdb-events.h"
-#include "gdb_assert.h"
#include "top.h" /* For command_loop. */
+#include "continuations.h"
+
+/* True if the current interpreter in is async mode. See interps.h
+ for more details. This starts out disabled, until all the explicit
+ command line arguments (e.g., `gdb -ex "start" -ex "next"') are
+ processed. */
+int interpreter_async = 0;
struct interp
{
- /* This is the name in "-i=" and set interpreter. */
+ /* This is the name in "-i=" and set interpreter. */
const char *name;
/* Interpreters are stored in a linked list, this is the next
object is a bit confused. */
void *data;
- /* Has the init_proc been run? */
+ /* Has the init_proc been run? */
int inited;
- /* This is the ui_out used to collect results for this interpreter.
- It can be a formatter for stdout, as is the case for the console
- & mi outputs, or it might be a result formatter. */
- struct ui_out *interpreter_out;
-
const struct interp_procs *procs;
int quiet_p;
};
-/* Functions local to this file. */
-static void initialize_interps (void);
-static char **interpreter_completer (char *text, char *word);
-
-/* The magic initialization routine for this module. */
+/* The magic initialization routine for this module. */
void _initialize_interpreter (void);
static struct interp *interp_list = NULL;
static struct interp *current_interpreter = NULL;
-
-static int interpreter_initialized = 0;
+static struct interp *top_level_interpreter_ptr = NULL;
/* interp_new - This allocates space for a new interpreter,
fills the fields from the inputs, and returns a pointer to the
- interpreter. */
+ interpreter. */
struct interp *
-interp_new (const char *name, void *data, struct ui_out *uiout,
- const struct interp_procs *procs)
+interp_new (const char *name, const struct interp_procs *procs)
{
struct interp *new_interp;
- new_interp = XMALLOC (struct interp);
+ new_interp = XNEW (struct interp);
new_interp->name = xstrdup (name);
- new_interp->data = data;
- new_interp->interpreter_out = uiout;
+ new_interp->data = NULL;
new_interp->quiet_p = 0;
new_interp->procs = procs;
new_interp->inited = 0;
+ /* Check for required procs. */
+ gdb_assert (procs->command_loop_proc != NULL);
+
return new_interp;
}
void
interp_add (struct interp *interp)
{
- if (!interpreter_initialized)
- initialize_interps ();
-
gdb_assert (interp_lookup (interp->name) == NULL);
interp->next = interp_list;
init proc is successful, return 1, if it fails, set the old
interpreter back in place and return 0. If we can't restore the
old interpreter, then raise an internal error, since we are in
- pretty bad shape at this point. */
+ pretty bad shape at this point.
+
+ The TOP_LEVEL parameter tells if this new interpreter is
+ the top-level one. The top-level is what is requested
+ on the command line, and is responsible for reporting general
+ notification about target state changes. For example, if
+ MI is the top-level interpreter, then it will always report
+ events such as target stops and new thread creation, even if they
+ are caused by CLI commands. */
int
-interp_set (struct interp *interp)
+interp_set (struct interp *interp, int top_level)
{
struct interp *old_interp = current_interpreter;
int first_time = 0;
-
-
char buffer[64];
+ /* If we already have an interpreter, then trying to
+ set top level interpreter is kinda pointless. */
+ gdb_assert (!top_level || !current_interpreter);
+ gdb_assert (!top_level || !top_level_interpreter_ptr);
+
if (current_interpreter != NULL)
{
- do_all_continuations ();
- ui_out_flush (uiout);
+ ui_out_flush (current_uiout);
if (current_interpreter->procs->suspend_proc
&& !current_interpreter->procs->suspend_proc (current_interpreter->
data))
{
- error ("Could not suspend interpreter \"%s\"\n",
+ error (_("Could not suspend interpreter \"%s\"."),
current_interpreter->name);
}
}
}
current_interpreter = interp;
+ if (top_level)
+ top_level_interpreter_ptr = interp;
/* We use interpreter_p for the "set interpreter" variable, so we need
- to make sure we have a malloc'ed copy for the set command to free. */
+ to make sure we have a malloc'ed copy for the set command to free. */
if (interpreter_p != NULL
&& strcmp (current_interpreter->name, interpreter_p) != 0)
{
interpreter_p = xstrdup (current_interpreter->name);
}
- uiout = interp->interpreter_out;
-
- /* Run the init proc. If it fails, try to restore the old interp. */
+ /* Run the init proc. If it fails, try to restore the old interp. */
if (!interp->inited)
{
if (interp->procs->init_proc != NULL)
{
- interp->data = interp->procs->init_proc ();
+ interp->data = interp->procs->init_proc (interp, top_level);
}
interp->inited = 1;
}
- /* Clear out any installed interpreter hooks/event handlers. */
+ /* Do this only after the interpreter is initialized. */
+ current_uiout = interp->procs->ui_out_proc (interp);
+
+ /* Clear out any installed interpreter hooks/event handlers. */
clear_interpreter_hooks ();
if (interp->procs->resume_proc != NULL
&& (!interp->procs->resume_proc (interp->data)))
{
- if (!interp_set (old_interp))
+ if (old_interp == NULL || !interp_set (old_interp, 0))
internal_error (__FILE__, __LINE__,
- "Failed to initialize new interp \"%s\" %s",
+ _("Failed to initialize new interp \"%s\" %s"),
interp->name, "and could not restore old interp!\n");
return 0;
}
- /* Finally, put up the new prompt to show that we are indeed here.
- Also, display_gdb_prompt for the console does some readline magic
- which is needed for the console interpreter, at least... */
-
- if (!first_time)
+ if (!first_time && !interp_quiet_p (interp))
{
- if (!interp_quiet_p (interp))
- {
- sprintf (buffer, "Switching to interpreter \"%.24s\".\n",
- interp->name);
- ui_out_text (uiout, buffer);
- }
- display_gdb_prompt (NULL);
+ xsnprintf (buffer, sizeof (buffer),
+ "Switching to interpreter \"%.24s\".\n", interp->name);
+ ui_out_text (current_uiout, buffer);
}
return 1;
return NULL;
}
-/* Returns the current interpreter. */
+/* Returns the current interpreter. */
struct ui_out *
interp_ui_out (struct interp *interp)
{
if (interp != NULL)
- return interp->interpreter_out;
+ return interp->procs->ui_out_proc (interp);
+
+ return current_interpreter->procs->ui_out_proc (current_interpreter);
+}
+
+int
+current_interp_set_logging (int start_log, struct ui_file *out,
+ struct ui_file *logfile)
+{
+ if (current_interpreter == NULL
+ || current_interpreter->procs->set_logging_proc == NULL)
+ return 0;
- return current_interpreter->interpreter_out;
+ return current_interpreter->procs->set_logging_proc (current_interpreter,
+ start_log, out,
+ logfile);
}
-/* Returns true if the current interp is the passed in name. */
+/* Temporarily overrides the current interpreter. */
+struct interp *
+interp_set_temp (const char *name)
+{
+ struct interp *interp = interp_lookup (name);
+ struct interp *old_interp = current_interpreter;
+
+ if (interp)
+ current_interpreter = interp;
+ return old_interp;
+}
+
+/* Returns the interpreter's cookie. */
+
+void *
+interp_data (struct interp *interp)
+{
+ return interp->data;
+}
+
+/* Returns the interpreter's name. */
+
+const char *
+interp_name (struct interp *interp)
+{
+ return interp->name;
+}
+
+/* Returns true if the current interp is the passed in name. */
int
current_interp_named_p (const char *interp_name)
{
return 0;
}
-/* This is called in display_gdb_prompt. If the proc returns a zero
- value, display_gdb_prompt will return without displaying the
- prompt. */
-int
-current_interp_display_prompt_p (void)
+/* The interpreter that is active while `interp_exec' is active, NULL
+ at all other times. */
+static struct interp *command_interpreter;
+
+/* The interpreter that was active when a command was executed.
+ Normally that'd always be CURRENT_INTERPRETER, except that MI's
+ -interpreter-exec command doesn't actually flip the current
+ interpreter when running its sub-command. The
+ `command_interpreter' global tracks when interp_exec is called
+ (IOW, when -interpreter-exec is called). If that is set, it is
+ INTERP in '-interpreter-exec INTERP "CMD"' or in 'interpreter-exec
+ INTERP "CMD". Otherwise, interp_exec isn't active, and so the
+ interpreter running the command is the current interpreter. */
+
+struct interp *
+command_interp (void)
{
- if (current_interpreter == NULL
- || current_interpreter->procs->prompt_proc_p == NULL)
- return 0;
+ if (command_interpreter != NULL)
+ return command_interpreter;
else
- return current_interpreter->procs->prompt_proc_p (current_interpreter->
- data);
+ return current_interpreter;
}
/* Run the current command interpreter's main loop. */
void
current_interp_command_loop (void)
{
- /* Somewhat messy. For the moment prop up all the old ways of
- selecting the command loop. `command_loop_hook' should be
- deprecated. */
- if (command_loop_hook != NULL)
- command_loop_hook ();
- else if (current_interpreter != NULL
- && current_interpreter->procs->command_loop_proc != NULL)
- current_interpreter->procs->command_loop_proc (current_interpreter->data);
- else
- command_loop ();
+ gdb_assert (current_interpreter != NULL);
+
+ current_interpreter->procs->command_loop_proc (current_interpreter->data);
}
int
return current_interpreter->quiet_p;
}
-int
+static int
interp_set_quiet (struct interp *interp, int quiet)
{
int old_val = interp->quiet_p;
+
interp->quiet_p = quiet;
return old_val;
}
/* interp_exec - This executes COMMAND_STR in the current
- interpreter. */
-int
-interp_exec_p (struct interp *interp)
-{
- return interp->procs->exec_proc != NULL;
-}
+ interpreter. */
-int
+struct gdb_exception
interp_exec (struct interp *interp, const char *command_str)
{
- if (interp->procs->exec_proc != NULL)
- {
- return interp->procs->exec_proc (interp->data, command_str);
- }
- return 0;
+ struct gdb_exception ex;
+ struct interp *save_command_interp;
+
+ gdb_assert (interp->procs->exec_proc != NULL);
+
+ /* See `command_interp' for why we do this. */
+ save_command_interp = command_interpreter;
+ command_interpreter = interp;
+
+ ex = interp->procs->exec_proc (interp->data, command_str);
+
+ command_interpreter = save_command_interp;
+
+ return ex;
}
-/* A convenience routine that nulls out all the
- common command hooks. Use it when removing your interpreter in its
- suspend proc. */
+/* A convenience routine that nulls out all the common command hooks.
+ Use it when removing your interpreter in its suspend proc. */
void
-clear_interpreter_hooks ()
+clear_interpreter_hooks (void)
{
- init_ui_hook = 0;
- print_frame_info_listing_hook = 0;
+ deprecated_init_ui_hook = 0;
+ deprecated_print_frame_info_listing_hook = 0;
/*print_frame_more_info_hook = 0; */
- query_hook = 0;
- warning_hook = 0;
- create_breakpoint_hook = 0;
- delete_breakpoint_hook = 0;
- modify_breakpoint_hook = 0;
- interactive_hook = 0;
- registers_changed_hook = 0;
- readline_begin_hook = 0;
- readline_hook = 0;
- readline_end_hook = 0;
- register_changed_hook = 0;
- memory_changed_hook = 0;
- context_hook = 0;
- target_wait_hook = 0;
- call_command_hook = 0;
- error_hook = 0;
- error_begin_hook = 0;
- command_loop_hook = 0;
- clear_gdb_event_hooks ();
+ deprecated_query_hook = 0;
+ deprecated_warning_hook = 0;
+ deprecated_interactive_hook = 0;
+ deprecated_readline_begin_hook = 0;
+ deprecated_readline_hook = 0;
+ deprecated_readline_end_hook = 0;
+ deprecated_register_changed_hook = 0;
+ deprecated_context_hook = 0;
+ deprecated_target_wait_hook = 0;
+ deprecated_call_command_hook = 0;
+ deprecated_error_begin_hook = 0;
}
-/* This is a lazy init routine, called the first time
- the interpreter module is used. I put it here just in case, but I haven't
- thought of a use for it yet. I will probably bag it soon, since I don't
- think it will be necessary. */
static void
-initialize_interps (void)
-{
- interpreter_initialized = 1;
- /* Don't know if anything needs to be done here... */
-}
-
-void
interpreter_exec_cmd (char *args, int from_tty)
{
struct interp *old_interp, *interp_to_use;
unsigned int nrules;
unsigned int i;
int old_quiet, use_quiet;
+ struct cleanup *cleanup;
- prules = buildargv (args);
- if (prules == NULL)
- {
- error ("unable to parse arguments");
- }
+ if (args == NULL)
+ error_no_arg (_("interpreter-exec command"));
+
+ prules = gdb_buildargv (args);
+ cleanup = make_cleanup_freeargv (prules);
nrules = 0;
- if (prules != NULL)
- {
- for (trule = prules; *trule != NULL; trule++)
- {
- nrules++;
- }
- }
+ for (trule = prules; *trule != NULL; trule++)
+ nrules++;
if (nrules < 2)
- error ("usage: interpreter-exec <interpreter> [ <command> ... ]");
+ error (_("usage: interpreter-exec <interpreter> [ <command> ... ]"));
old_interp = current_interpreter;
interp_to_use = interp_lookup (prules[0]);
if (interp_to_use == NULL)
- error ("Could not find interpreter \"%s\".", prules[0]);
+ error (_("Could not find interpreter \"%s\"."), prules[0]);
- /* Temporarily set interpreters quiet */
+ /* Temporarily set interpreters quiet. */
old_quiet = interp_set_quiet (old_interp, 1);
use_quiet = interp_set_quiet (interp_to_use, 1);
- if (!interp_set (interp_to_use))
- error ("Could not switch to interpreter \"%s\".", prules[0]);
+ if (!interp_set (interp_to_use, 0))
+ error (_("Could not switch to interpreter \"%s\"."), prules[0]);
for (i = 1; i < nrules; i++)
{
- if (!interp_exec (interp_to_use, prules[i]))
+ struct gdb_exception e = interp_exec (interp_to_use, prules[i]);
+
+ if (e.reason < 0)
{
- interp_set (old_interp);
- interp_set_quiet (interp_to_use, old_quiet);
- error ("error in command: \"%s\".", prules[i]);
- break;
+ interp_set (old_interp, 0);
+ interp_set_quiet (interp_to_use, use_quiet);
+ interp_set_quiet (old_interp, old_quiet);
+ error (_("error in command: \"%s\"."), prules[i]);
}
}
- interp_set (old_interp);
+ interp_set (old_interp, 0);
interp_set_quiet (interp_to_use, use_quiet);
interp_set_quiet (old_interp, old_quiet);
+
+ do_cleanups (cleanup);
}
-/* List the possible interpreters which could complete the given text. */
-static char **
-interpreter_completer (char *text, char *word)
+/* List the possible interpreters which could complete the given text. */
+static VEC (char_ptr) *
+interpreter_completer (struct cmd_list_element *ignore,
+ const char *text, const char *word)
{
- int alloced = 0;
int textlen;
- int num_matches;
- char **matches;
+ VEC (char_ptr) *matches = NULL;
struct interp *interp;
- /* We expect only a very limited number of interpreters, so just
- allocate room for all of them. */
- for (interp = interp_list; interp != NULL; interp = interp->next)
- ++alloced;
- matches = (char **) xmalloc (alloced * sizeof (char *));
-
- num_matches = 0;
textlen = strlen (text);
for (interp = interp_list; interp != NULL; interp = interp->next)
{
if (strncmp (interp->name, text, textlen) == 0)
{
- matches[num_matches] =
- (char *) xmalloc (strlen (word) + strlen (interp->name) + 1);
+ char *match;
+
+ match = (char *) xmalloc (strlen (word) + strlen (interp->name) + 1);
if (word == text)
- strcpy (matches[num_matches], interp->name);
+ strcpy (match, interp->name);
else if (word > text)
{
- /* Return some portion of interp->name */
- strcpy (matches[num_matches], interp->name + (word - text));
+ /* Return some portion of interp->name. */
+ strcpy (match, interp->name + (word - text));
}
else
{
- /* Return some of text plus interp->name */
- strncpy (matches[num_matches], word, text - word);
- matches[num_matches][text - word] = '\0';
- strcat (matches[num_matches], interp->name);
+ /* Return some of text plus interp->name. */
+ strncpy (match, word, text - word);
+ match[text - word] = '\0';
+ strcat (match, interp->name);
}
- ++num_matches;
+ VEC_safe_push (char_ptr, matches, match);
}
}
- if (num_matches == 0)
- {
- xfree (matches);
- matches = NULL;
- }
- else if (num_matches < alloced)
- {
- matches = (char **) xrealloc ((char *) matches, ((num_matches + 1)
- * sizeof (char *)));
- matches[num_matches] = NULL;
- }
-
return matches;
}
+struct interp *
+top_level_interpreter (void)
+{
+ return top_level_interpreter_ptr;
+}
+
+void *
+top_level_interpreter_data (void)
+{
+ gdb_assert (top_level_interpreter_ptr);
+ return top_level_interpreter_ptr->data;
+}
+
/* This just adds the "interpreter-exec" command. */
void
_initialize_interpreter (void)
struct cmd_list_element *c;
c = add_cmd ("interpreter-exec", class_support,
- interpreter_exec_cmd,
- "Execute a command in an interpreter. It takes two arguments:\n\
+ interpreter_exec_cmd, _("\
+Execute a command in an interpreter. It takes two arguments:\n\
The first argument is the name of the interpreter to use.\n\
-The second argument is the command to execute.\n", &cmdlist);
+The second argument is the command to execute.\n"), &cmdlist);
set_cmd_completer (c, interpreter_completer);
}
projects / platform / upstream / binutils.git / blobdiff