/* Interface between gdb and its extension languages.
- Copyright (C) 2014 Free Software Foundation, Inc.
+ Copyright (C) 2014-2020 Free Software Foundation, Inc.
This file is part of GDB.
#include "defs.h"
#include <signal.h>
+#include "target.h"
#include "auto-load.h"
#include "breakpoint.h"
#include "event-top.h"
#include "extension.h"
#include "extension-priv.h"
-#include "observer.h"
+#include "observable.h"
#include "cli/cli-script.h"
#include "python/python.h"
#include "guile/guile.h"
{
source_gdb_script,
source_gdb_objfile_script,
+ NULL, /* objfile_script_executor */
auto_load_gdb_scripts_enabled
};
int i;
const struct extension_language_defn *extlang;
+ if (has_extension (file, extension_language_gdb.suffix))
+ return &extension_language_gdb;
+
ALL_EXTENSION_LANGUAGES (i, extlang)
{
if (has_extension (file, extlang->suffix))
return extlang->script_ops->objfile_script_sourcer;
}
+/* Return the objfile script "executor" function for EXTLANG.
+ This is the function that executes a script for a particular objfile.
+ If support for this language isn't compiled in, NULL is returned.
+ The extension language is not required to implement this function. */
+
+objfile_script_executor_func *
+ext_lang_objfile_script_executor
+ (const struct extension_language_defn *extlang)
+{
+ if (extlang->script_ops == NULL)
+ return NULL;
+
+ return extlang->script_ops->objfile_script_executor;
+}
+
/* Return non-zero if auto-loading of EXTLANG scripts is enabled.
Zero is returned if support for this language isn't compiled in. */
We don't know in advance which extension language will provide a
pretty-printer for the type, so all are initialized. */
-struct ext_lang_type_printers *
-start_ext_lang_type_printers (void)
+ext_lang_type_printers::ext_lang_type_printers ()
{
- struct ext_lang_type_printers *printers
- = XCNEW (struct ext_lang_type_printers);
int i;
const struct extension_language_defn *extlang;
ALL_ENABLED_EXTENSION_LANGUAGES (i, extlang)
{
if (extlang->ops->start_type_printers != NULL)
- extlang->ops->start_type_printers (extlang, printers);
+ extlang->ops->start_type_printers (extlang, this);
}
-
- return printers;
}
/* Iteratively try the type pretty-printers specified by PRINTERS
return NULL;
}
-/* Call this after pretty-printing a type to release all memory held
- by PRINTERS. */
-
-void
-free_ext_lang_type_printers (struct ext_lang_type_printers *printers)
+ext_lang_type_printers::~ext_lang_type_printers ()
{
int i;
const struct extension_language_defn *extlang;
ALL_ENABLED_EXTENSION_LANGUAGES (i, extlang)
{
if (extlang->ops->free_type_printers != NULL)
- extlang->ops->free_type_printers (extlang, printers);
+ extlang->ops->free_type_printers (extlang, this);
}
-
- xfree (printers);
}
\f
-/* Try to pretty-print a value of type TYPE located at VALADDR
- + EMBEDDED_OFFSET, which came from the inferior at address ADDRESS
- + EMBEDDED_OFFSET, onto stdio stream STREAM according to OPTIONS.
- VAL is the whole object that came from ADDRESS. VALADDR must point to
- the head of VAL's contents buffer.
+/* Try to pretty-print a value of type TYPE located at VAL's contents
+ buffer + EMBEDDED_OFFSET, which came from the inferior at address
+ ADDRESS + EMBEDDED_OFFSET, onto stdio stream STREAM according to
+ OPTIONS.
+ VAL is the whole object that came from ADDRESS.
Returns non-zero if the value was successfully pretty-printed.
Extension languages are tried in the order specified by
errors that trigger an exception in the extension language. */
int
-apply_ext_lang_val_pretty_printer (struct type *type, const gdb_byte *valaddr,
- int embedded_offset, CORE_ADDR address,
+apply_ext_lang_val_pretty_printer (struct type *type,
+ LONGEST embedded_offset, CORE_ADDR address,
struct ui_file *stream, int recurse,
- const struct value *val,
+ struct value *val,
const struct value_print_options *options,
const struct language_defn *language)
{
if (extlang->ops->apply_val_pretty_printer == NULL)
continue;
- rc = extlang->ops->apply_val_pretty_printer (extlang, type, valaddr,
+ rc = extlang->ops->apply_val_pretty_printer (extlang, type,
embedded_offset, address,
stream, recurse, val,
options, language);
rather than trying filters in other extension languages. */
enum ext_lang_bt_status
-apply_ext_lang_frame_filter (struct frame_info *frame, int flags,
+apply_ext_lang_frame_filter (struct frame_info *frame,
+ frame_filter_flags flags,
enum ext_lang_frame_args args_type,
struct ui_out *out,
int frame_low, int frame_high)
install_gdb_sigint_handler (struct signal_handler *previous)
{
/* Save here to simplify comparison. */
- RETSIGTYPE (*handle_sigint_for_compare) () = handle_sigint;
+ sighandler_t handle_sigint_for_compare = handle_sigint;
previous->handler = signal (SIGINT, handle_sigint);
if (previous->handler != handle_sigint_for_compare)
= XCNEW (struct active_ext_lang_state);
previous->ext_lang = active_ext_lang;
+ previous->sigint_handler.handler_saved = 0;
active_ext_lang = now_active;
- /* If the newly active extension language uses cooperative SIGINT handling
- then ensure GDB's SIGINT handler is installed. */
- if (now_active->language == EXT_LANG_GDB
- || now_active->ops->check_quit_flag != NULL)
- install_gdb_sigint_handler (&previous->sigint_handler);
-
- /* If there's a SIGINT recorded in the cooperative extension languages,
- move it to the new language, or save it in GDB's global flag if the newly
- active extension language doesn't use cooperative SIGINT handling. */
- if (check_quit_flag ())
- set_quit_flag ();
+ if (target_terminal::is_ours ())
+ {
+ /* If the newly active extension language uses cooperative SIGINT
+ handling then ensure GDB's SIGINT handler is installed. */
+ if (now_active->language == EXT_LANG_GDB
+ || now_active->ops->check_quit_flag != NULL)
+ install_gdb_sigint_handler (&previous->sigint_handler);
+
+ /* If there's a SIGINT recorded in the cooperative extension languages,
+ move it to the new language, or save it in GDB's global flag if the
+ newly active extension language doesn't use cooperative SIGINT
+ handling. */
+ if (check_quit_flag ())
+ set_quit_flag ();
+ }
return previous;
}
void
restore_active_ext_lang (struct active_ext_lang_state *previous)
{
- const struct extension_language_defn *current = active_ext_lang;
-
active_ext_lang = previous->ext_lang;
- /* Restore the previous SIGINT handler if one was saved. */
- if (previous->sigint_handler.handler_saved)
- install_sigint_handler (&previous->sigint_handler);
-
- /* If there's a SIGINT recorded in the cooperative extension languages,
- move it to the new language, or save it in GDB's global flag if the newly
- active extension language doesn't use cooperative SIGINT handling. */
- if (check_quit_flag ())
- set_quit_flag ();
-
- xfree (previous);
-}
-
-/* Clear the quit flag.
- The flag is cleared in all extension languages,
- not just the currently active one. */
-
-void
-clear_quit_flag (void)
-{
- int i;
- const struct extension_language_defn *extlang;
-
- ALL_ENABLED_EXTENSION_LANGUAGES (i, extlang)
+ if (target_terminal::is_ours ())
{
- if (extlang->ops->clear_quit_flag != NULL)
- extlang->ops->clear_quit_flag (extlang);
+ /* Restore the previous SIGINT handler if one was saved. */
+ if (previous->sigint_handler.handler_saved)
+ install_sigint_handler (&previous->sigint_handler);
+
+ /* If there's a SIGINT recorded in the cooperative extension languages,
+ move it to the new language, or save it in GDB's global flag if the
+ newly active extension language doesn't use cooperative SIGINT
+ handling. */
+ if (check_quit_flag ())
+ set_quit_flag ();
}
-
- quit_flag = 0;
+ xfree (previous);
}
/* Set the quit flag.
&& active_ext_lang->ops->set_quit_flag != NULL)
active_ext_lang->ops->set_quit_flag (active_ext_lang);
else
- quit_flag = 1;
+ {
+ quit_flag = 1;
+
+ /* Now wake up the event loop, or any interruptible_select. Do
+ this after setting the flag, because signals on Windows
+ actually run on a separate thread, and thus otherwise the
+ main code could be woken up and find quit_flag still
+ clear. */
+ quit_serial_event_set ();
+ }
}
/* Return true if the quit flag has been set, false otherwise.
/* This is written in a particular way to avoid races. */
if (quit_flag)
{
+ /* No longer need to wake up the event loop or any
+ interruptible_select. The caller handles the quit
+ request. */
+ quit_serial_event_clear ();
quit_flag = 0;
result = 1;
}
return result;
}
-\f
+
+/* See extension.h. */
+
+void
+get_matching_xmethod_workers (struct type *type, const char *method_name,
+ std::vector<xmethod_worker_up> *workers)
+{
+ int i;
+ const struct extension_language_defn *extlang;
+
+ ALL_ENABLED_EXTENSION_LANGUAGES (i, extlang)
+ {
+ enum ext_lang_rc rc;
+
+ /* If an extension language does not support xmethods, ignore
+ it. */
+ if (extlang->ops->get_matching_xmethod_workers == NULL)
+ continue;
+
+ rc = extlang->ops->get_matching_xmethod_workers (extlang,
+ type, method_name,
+ workers);
+ if (rc == EXT_LANG_RC_ERROR)
+ error (_("Error while looking for matching xmethod workers "
+ "defined in %s."), extlang->capitalized_name);
+ }
+}
+
+/* See extension.h. */
+
+std::vector<type *>
+xmethod_worker::get_arg_types ()
+{
+ std::vector<type *> type_array;
+
+ ext_lang_rc rc = do_get_arg_types (&type_array);
+ if (rc == EXT_LANG_RC_ERROR)
+ error (_("Error while looking for arg types of a xmethod worker "
+ "defined in %s."), m_extlang->capitalized_name);
+
+ return type_array;
+}
+
+/* See extension.h. */
+
+struct type *
+xmethod_worker::get_result_type (value *object, gdb::array_view<value *> args)
+{
+ type *result_type;
+
+ ext_lang_rc rc = do_get_result_type (object, args, &result_type);
+ if (rc == EXT_LANG_RC_ERROR)
+ {
+ error (_("Error while fetching result type of an xmethod worker "
+ "defined in %s."), m_extlang->capitalized_name);
+ }
+
+ return result_type;
+}
+
/* Called via an observer before gdb prints its prompt.
Iterate over the extension languages giving them a chance to
change the prompt. The first one to change the prompt wins,
}
}
-extern initialize_file_ftype _initialize_extension;
-
void
_initialize_extension (void)
{
- observer_attach_before_prompt (ext_lang_before_prompt);
+ gdb::observers::before_prompt.attach (ext_lang_before_prompt);
}
projects / deliverable / binutils-gdb.git / blobdiff