1057 lines
29 KiB
C
1057 lines
29 KiB
C
/* Multiple source language support for GDB.
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Copyright (C) 1991-1996, 1998-2005, 2007-2012 Free Software
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Foundation, Inc.
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Contributed by the Department of Computer Science at the State University
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of New York at Buffalo.
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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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/* This file contains functions that return things that are specific
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to languages. Each function should examine current_language if necessary,
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and return the appropriate result. */
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/* FIXME: Most of these would be better organized as macros which
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return data out of a "language-specific" struct pointer that is set
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whenever the working language changes. That would be a lot faster. */
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#include "defs.h"
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#include <ctype.h>
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#include "gdb_string.h"
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#include "symtab.h"
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#include "gdbtypes.h"
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#include "value.h"
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#include "gdbcmd.h"
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#include "expression.h"
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#include "language.h"
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#include "target.h"
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#include "parser-defs.h"
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#include "jv-lang.h"
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#include "demangle.h"
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#include "symfile.h"
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extern void _initialize_language (void);
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static void unk_lang_error (char *);
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static int unk_lang_parser (void);
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static void show_check (char *, int);
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static void set_check (char *, int);
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static void set_range_case (void);
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static void unk_lang_emit_char (int c, struct type *type,
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struct ui_file *stream, int quoter);
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static void unk_lang_printchar (int c, struct type *type,
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struct ui_file *stream);
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static void unk_lang_print_type (struct type *, const char *, struct ui_file *,
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int, int);
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static void unk_lang_value_print (struct value *, struct ui_file *,
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const struct value_print_options *);
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static CORE_ADDR unk_lang_trampoline (struct frame_info *, CORE_ADDR pc);
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/* Forward declaration */
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extern const struct language_defn unknown_language_defn;
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/* The current (default at startup) state of type and range checking.
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(If the modes are set to "auto", though, these are changed based
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on the default language at startup, and then again based on the
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language of the first source file. */
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enum range_mode range_mode = range_mode_auto;
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enum range_check range_check = range_check_off;
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enum case_mode case_mode = case_mode_auto;
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enum case_sensitivity case_sensitivity = case_sensitive_on;
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/* The current language and language_mode (see language.h). */
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const struct language_defn *current_language = &unknown_language_defn;
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enum language_mode language_mode = language_mode_auto;
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/* The language that the user expects to be typing in (the language
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of main(), or the last language we notified them about, or C). */
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const struct language_defn *expected_language;
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/* The list of supported languages. The list itself is malloc'd. */
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static const struct language_defn **languages;
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static unsigned languages_size;
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static unsigned languages_allocsize;
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#define DEFAULT_ALLOCSIZE 4
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/* The current values of the "set language/type/range" enum
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commands. */
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static const char *language;
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static const char *type;
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static const char *range;
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static const char *case_sensitive;
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/* Warning issued when current_language and the language of the current
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frame do not match. */
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char lang_frame_mismatch_warn[] =
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"Warning: the current language does not match this frame.";
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/* This page contains the functions corresponding to GDB commands
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and their helpers. */
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/* Show command. Display a warning if the language set
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does not match the frame. */
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static void
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show_language_command (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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{
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enum language flang; /* The language of the current frame. */
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if (language_mode == language_mode_auto)
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fprintf_filtered (gdb_stdout,
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_("The current source language is "
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"\"auto; currently %s\".\n"),
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current_language->la_name);
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else
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fprintf_filtered (gdb_stdout,
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_("The current source language is \"%s\".\n"),
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current_language->la_name);
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flang = get_frame_language ();
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if (flang != language_unknown &&
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language_mode == language_mode_manual &&
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current_language->la_language != flang)
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printf_filtered ("%s\n", lang_frame_mismatch_warn);
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}
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/* Set command. Change the current working language. */
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static void
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set_language_command (char *ignore, int from_tty, struct cmd_list_element *c)
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{
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int i;
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enum language flang;
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/* Search the list of languages for a match. */
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for (i = 0; i < languages_size; i++)
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{
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if (strcmp (languages[i]->la_name, language) == 0)
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{
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/* Found it! Go into manual mode, and use this language. */
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if (languages[i]->la_language == language_auto)
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{
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/* Enter auto mode. Set to the current frame's language, if
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known, or fallback to the initial language. */
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language_mode = language_mode_auto;
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flang = get_frame_language ();
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if (flang != language_unknown)
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set_language (flang);
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else
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set_initial_language ();
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expected_language = current_language;
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return;
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}
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else
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{
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/* Enter manual mode. Set the specified language. */
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language_mode = language_mode_manual;
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current_language = languages[i];
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set_range_case ();
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expected_language = current_language;
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return;
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}
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}
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}
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internal_error (__FILE__, __LINE__,
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"Couldn't find language `%s' in known languages list.",
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language);
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}
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/* Show command. Display a warning if the range setting does
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not match the current language. */
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static void
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show_range_command (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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{
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if (range_mode == range_mode_auto)
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{
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char *tmp;
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switch (range_check)
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{
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case range_check_on:
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tmp = "on";
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break;
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case range_check_off:
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tmp = "off";
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break;
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case range_check_warn:
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tmp = "warn";
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break;
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default:
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internal_error (__FILE__, __LINE__,
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"Unrecognized range check setting.");
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}
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fprintf_filtered (gdb_stdout,
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_("Range checking is \"auto; currently %s\".\n"),
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tmp);
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}
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else
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fprintf_filtered (gdb_stdout, _("Range checking is \"%s\".\n"),
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value);
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if (range_check != current_language->la_range_check)
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warning (_("the current range check setting "
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"does not match the language.\n"));
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}
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/* Set command. Change the setting for range checking. */
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static void
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set_range_command (char *ignore, int from_tty, struct cmd_list_element *c)
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{
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if (strcmp (range, "on") == 0)
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{
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range_check = range_check_on;
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range_mode = range_mode_manual;
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}
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else if (strcmp (range, "warn") == 0)
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{
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range_check = range_check_warn;
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range_mode = range_mode_manual;
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}
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else if (strcmp (range, "off") == 0)
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{
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range_check = range_check_off;
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range_mode = range_mode_manual;
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}
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else if (strcmp (range, "auto") == 0)
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{
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range_mode = range_mode_auto;
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set_range_case ();
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return;
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}
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else
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{
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internal_error (__FILE__, __LINE__,
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_("Unrecognized range check setting: \"%s\""), range);
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}
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if (range_check != current_language->la_range_check)
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warning (_("the current range check setting "
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"does not match the language.\n"));
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}
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/* Show command. Display a warning if the case sensitivity setting does
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not match the current language. */
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static void
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show_case_command (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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{
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if (case_mode == case_mode_auto)
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{
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char *tmp = NULL;
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switch (case_sensitivity)
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{
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case case_sensitive_on:
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tmp = "on";
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break;
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case case_sensitive_off:
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tmp = "off";
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break;
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default:
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internal_error (__FILE__, __LINE__,
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"Unrecognized case-sensitive setting.");
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}
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fprintf_filtered (gdb_stdout,
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_("Case sensitivity in "
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"name search is \"auto; currently %s\".\n"),
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tmp);
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}
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else
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fprintf_filtered (gdb_stdout,
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_("Case sensitivity in name search is \"%s\".\n"),
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value);
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if (case_sensitivity != current_language->la_case_sensitivity)
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warning (_("the current case sensitivity setting does not match "
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"the language.\n"));
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}
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/* Set command. Change the setting for case sensitivity. */
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static void
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set_case_command (char *ignore, int from_tty, struct cmd_list_element *c)
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{
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if (strcmp (case_sensitive, "on") == 0)
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{
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case_sensitivity = case_sensitive_on;
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case_mode = case_mode_manual;
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}
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else if (strcmp (case_sensitive, "off") == 0)
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{
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case_sensitivity = case_sensitive_off;
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case_mode = case_mode_manual;
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}
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else if (strcmp (case_sensitive, "auto") == 0)
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{
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case_mode = case_mode_auto;
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set_range_case ();
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return;
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}
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else
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{
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internal_error (__FILE__, __LINE__,
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"Unrecognized case-sensitive setting: \"%s\"",
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case_sensitive);
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}
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if (case_sensitivity != current_language->la_case_sensitivity)
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warning (_("the current case sensitivity setting does not match "
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"the language.\n"));
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}
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/* Set the status of range and type checking and case sensitivity based on
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the current modes and the current language.
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If SHOW is non-zero, then print out the current language,
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type and range checking status. */
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static void
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set_range_case (void)
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{
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if (range_mode == range_mode_auto)
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range_check = current_language->la_range_check;
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if (case_mode == case_mode_auto)
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case_sensitivity = current_language->la_case_sensitivity;
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}
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/* Set current language to (enum language) LANG. Returns previous
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language. */
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enum language
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set_language (enum language lang)
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{
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int i;
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enum language prev_language;
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prev_language = current_language->la_language;
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for (i = 0; i < languages_size; i++)
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{
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if (languages[i]->la_language == lang)
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{
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current_language = languages[i];
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set_range_case ();
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break;
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}
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}
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return prev_language;
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}
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/* Print out the current language settings: language, range and
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type checking. If QUIETLY, print only what has changed. */
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void
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language_info (int quietly)
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{
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if (quietly && expected_language == current_language)
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return;
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expected_language = current_language;
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printf_unfiltered (_("Current language: %s\n"), language);
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show_language_command (NULL, 1, NULL, NULL);
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if (!quietly)
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{
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printf_unfiltered (_("Range checking: %s\n"), range);
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show_range_command (NULL, 1, NULL, NULL);
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printf_unfiltered (_("Case sensitivity: %s\n"), case_sensitive);
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show_case_command (NULL, 1, NULL, NULL);
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}
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}
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/* Returns non-zero if the value is a pointer type. */
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int
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pointer_type (struct type *type)
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{
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return TYPE_CODE (type) == TYPE_CODE_PTR ||
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TYPE_CODE (type) == TYPE_CODE_REF;
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}
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/* This page contains functions that return info about
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(struct value) values used in GDB. */
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/* Returns non-zero if the value VAL represents a true value. */
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int
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value_true (struct value *val)
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{
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/* It is possible that we should have some sort of error if a non-boolean
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value is used in this context. Possibly dependent on some kind of
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"boolean-checking" option like range checking. But it should probably
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not depend on the language except insofar as is necessary to identify
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a "boolean" value (i.e. in C using a float, pointer, etc., as a boolean
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should be an error, probably). */
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return !value_logical_not (val);
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}
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/* This page contains functions for the printing out of
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error messages that occur during type- and range-
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checking. */
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||
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/* This is called when a language fails a range-check. The
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first argument should be a printf()-style format string, and the
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rest of the arguments should be its arguments. If range_check is
|
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range_check_on, an error is printed; if range_check_warn, a warning;
|
||
otherwise just the message. */
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void
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range_error (const char *string,...)
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{
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va_list args;
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||
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va_start (args, string);
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switch (range_check)
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{
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case range_check_warn:
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vwarning (string, args);
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break;
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case range_check_on:
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verror (string, args);
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||
break;
|
||
case range_check_off:
|
||
/* FIXME: cagney/2002-01-30: Should this function print anything
|
||
when range error is off? */
|
||
vfprintf_filtered (gdb_stderr, string, args);
|
||
fprintf_filtered (gdb_stderr, "\n");
|
||
break;
|
||
default:
|
||
internal_error (__FILE__, __LINE__, _("bad switch"));
|
||
}
|
||
va_end (args);
|
||
}
|
||
|
||
|
||
/* This page contains miscellaneous functions. */
|
||
|
||
/* Return the language enum for a given language string. */
|
||
|
||
enum language
|
||
language_enum (char *str)
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < languages_size; i++)
|
||
if (strcmp (languages[i]->la_name, str) == 0)
|
||
return languages[i]->la_language;
|
||
|
||
return language_unknown;
|
||
}
|
||
|
||
/* Return the language struct for a given language enum. */
|
||
|
||
const struct language_defn *
|
||
language_def (enum language lang)
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < languages_size; i++)
|
||
{
|
||
if (languages[i]->la_language == lang)
|
||
{
|
||
return languages[i];
|
||
}
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
/* Return the language as a string. */
|
||
char *
|
||
language_str (enum language lang)
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < languages_size; i++)
|
||
{
|
||
if (languages[i]->la_language == lang)
|
||
{
|
||
return languages[i]->la_name;
|
||
}
|
||
}
|
||
return "Unknown";
|
||
}
|
||
|
||
static void
|
||
set_check (char *ignore, int from_tty)
|
||
{
|
||
printf_unfiltered (
|
||
"\"set check\" must be followed by the name of a check subcommand.\n");
|
||
help_list (setchecklist, "set check ", -1, gdb_stdout);
|
||
}
|
||
|
||
static void
|
||
show_check (char *ignore, int from_tty)
|
||
{
|
||
cmd_show_list (showchecklist, from_tty, "");
|
||
}
|
||
|
||
/* Add a language to the set of known languages. */
|
||
|
||
void
|
||
add_language (const struct language_defn *lang)
|
||
{
|
||
/* For the "set language" command. */
|
||
static char **language_names = NULL;
|
||
/* For the "help set language" command. */
|
||
char *language_set_doc = NULL;
|
||
|
||
int i;
|
||
struct ui_file *tmp_stream;
|
||
|
||
if (lang->la_magic != LANG_MAGIC)
|
||
{
|
||
fprintf_unfiltered (gdb_stderr,
|
||
"Magic number of %s language struct wrong\n",
|
||
lang->la_name);
|
||
internal_error (__FILE__, __LINE__,
|
||
_("failed internal consistency check"));
|
||
}
|
||
|
||
if (!languages)
|
||
{
|
||
languages_allocsize = DEFAULT_ALLOCSIZE;
|
||
languages = (const struct language_defn **) xmalloc
|
||
(languages_allocsize * sizeof (*languages));
|
||
}
|
||
if (languages_size >= languages_allocsize)
|
||
{
|
||
languages_allocsize *= 2;
|
||
languages = (const struct language_defn **) xrealloc ((char *) languages,
|
||
languages_allocsize * sizeof (*languages));
|
||
}
|
||
languages[languages_size++] = lang;
|
||
|
||
/* Build the language names array, to be used as enumeration in the
|
||
set language" enum command. */
|
||
language_names = xrealloc (language_names,
|
||
(languages_size + 1) * sizeof (const char *));
|
||
for (i = 0; i < languages_size; ++i)
|
||
language_names[i] = languages[i]->la_name;
|
||
language_names[i] = NULL;
|
||
|
||
/* Build the "help set language" docs. */
|
||
tmp_stream = mem_fileopen ();
|
||
|
||
fprintf_unfiltered (tmp_stream,
|
||
_("Set the current source language.\n"
|
||
"The currently understood settings are:\n\nlocal or "
|
||
"auto Automatic setting based on source file\n"));
|
||
|
||
for (i = 0; i < languages_size; ++i)
|
||
{
|
||
/* Already dealt with these above. */
|
||
if (languages[i]->la_language == language_unknown
|
||
|| languages[i]->la_language == language_auto)
|
||
continue;
|
||
|
||
/* FIXME: i18n: for now assume that the human-readable name
|
||
is just a capitalization of the internal name. */
|
||
fprintf_unfiltered (tmp_stream, "%-16s Use the %c%s language\n",
|
||
languages[i]->la_name,
|
||
/* Capitalize first letter of language
|
||
name. */
|
||
toupper (languages[i]->la_name[0]),
|
||
languages[i]->la_name + 1);
|
||
}
|
||
|
||
language_set_doc = ui_file_xstrdup (tmp_stream, NULL);
|
||
ui_file_delete (tmp_stream);
|
||
|
||
add_setshow_enum_cmd ("language", class_support,
|
||
(const char **) language_names,
|
||
&language,
|
||
language_set_doc,
|
||
_("Show the current source language."),
|
||
NULL, set_language_command,
|
||
show_language_command,
|
||
&setlist, &showlist);
|
||
|
||
xfree (language_set_doc);
|
||
}
|
||
|
||
/* Iterate through all registered languages looking for and calling
|
||
any non-NULL struct language_defn.skip_trampoline() functions.
|
||
Return the result from the first that returns non-zero, or 0 if all
|
||
`fail'. */
|
||
CORE_ADDR
|
||
skip_language_trampoline (struct frame_info *frame, CORE_ADDR pc)
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < languages_size; i++)
|
||
{
|
||
if (languages[i]->skip_trampoline)
|
||
{
|
||
CORE_ADDR real_pc = (languages[i]->skip_trampoline) (frame, pc);
|
||
|
||
if (real_pc)
|
||
return real_pc;
|
||
}
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Return demangled language symbol, or NULL.
|
||
FIXME: Options are only useful for certain languages and ignored
|
||
by others, so it would be better to remove them here and have a
|
||
more flexible demangler for the languages that need it.
|
||
FIXME: Sometimes the demangler is invoked when we don't know the
|
||
language, so we can't use this everywhere. */
|
||
char *
|
||
language_demangle (const struct language_defn *current_language,
|
||
const char *mangled, int options)
|
||
{
|
||
if (current_language != NULL && current_language->la_demangle)
|
||
return current_language->la_demangle (mangled, options);
|
||
return NULL;
|
||
}
|
||
|
||
/* Return class name from physname or NULL. */
|
||
char *
|
||
language_class_name_from_physname (const struct language_defn *lang,
|
||
const char *physname)
|
||
{
|
||
if (lang != NULL && lang->la_class_name_from_physname)
|
||
return lang->la_class_name_from_physname (physname);
|
||
return NULL;
|
||
}
|
||
|
||
/* Return non-zero if TYPE should be passed (and returned) by
|
||
reference at the language level. */
|
||
int
|
||
language_pass_by_reference (struct type *type)
|
||
{
|
||
return current_language->la_pass_by_reference (type);
|
||
}
|
||
|
||
/* Return zero; by default, types are passed by value at the language
|
||
level. The target ABI may pass or return some structs by reference
|
||
independent of this. */
|
||
int
|
||
default_pass_by_reference (struct type *type)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
/* Return the default string containing the list of characters
|
||
delimiting words. This is a reasonable default value that
|
||
most languages should be able to use. */
|
||
|
||
char *
|
||
default_word_break_characters (void)
|
||
{
|
||
return " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-";
|
||
}
|
||
|
||
/* Print the index of array elements using the C99 syntax. */
|
||
|
||
void
|
||
default_print_array_index (struct value *index_value, struct ui_file *stream,
|
||
const struct value_print_options *options)
|
||
{
|
||
fprintf_filtered (stream, "[");
|
||
LA_VALUE_PRINT (index_value, stream, options);
|
||
fprintf_filtered (stream, "] = ");
|
||
}
|
||
|
||
void
|
||
default_get_string (struct value *value, gdb_byte **buffer, int *length,
|
||
struct type **char_type, const char **charset)
|
||
{
|
||
error (_("Getting a string is unsupported in this language."));
|
||
}
|
||
|
||
/* Define the language that is no language. */
|
||
|
||
static int
|
||
unk_lang_parser (void)
|
||
{
|
||
return 1;
|
||
}
|
||
|
||
static void
|
||
unk_lang_error (char *msg)
|
||
{
|
||
error (_("Attempted to parse an expression with unknown language"));
|
||
}
|
||
|
||
static void
|
||
unk_lang_emit_char (int c, struct type *type, struct ui_file *stream,
|
||
int quoter)
|
||
{
|
||
error (_("internal error - unimplemented "
|
||
"function unk_lang_emit_char called."));
|
||
}
|
||
|
||
static void
|
||
unk_lang_printchar (int c, struct type *type, struct ui_file *stream)
|
||
{
|
||
error (_("internal error - unimplemented "
|
||
"function unk_lang_printchar called."));
|
||
}
|
||
|
||
static void
|
||
unk_lang_printstr (struct ui_file *stream, struct type *type,
|
||
const gdb_byte *string, unsigned int length,
|
||
const char *encoding, int force_ellipses,
|
||
const struct value_print_options *options)
|
||
{
|
||
error (_("internal error - unimplemented "
|
||
"function unk_lang_printstr called."));
|
||
}
|
||
|
||
static void
|
||
unk_lang_print_type (struct type *type, const char *varstring,
|
||
struct ui_file *stream, int show, int level)
|
||
{
|
||
error (_("internal error - unimplemented "
|
||
"function unk_lang_print_type called."));
|
||
}
|
||
|
||
static void
|
||
unk_lang_val_print (struct type *type, const gdb_byte *valaddr,
|
||
int embedded_offset, CORE_ADDR address,
|
||
struct ui_file *stream, int recurse,
|
||
const struct value *val,
|
||
const struct value_print_options *options)
|
||
{
|
||
error (_("internal error - unimplemented "
|
||
"function unk_lang_val_print called."));
|
||
}
|
||
|
||
static void
|
||
unk_lang_value_print (struct value *val, struct ui_file *stream,
|
||
const struct value_print_options *options)
|
||
{
|
||
error (_("internal error - unimplemented "
|
||
"function unk_lang_value_print called."));
|
||
}
|
||
|
||
static CORE_ADDR unk_lang_trampoline (struct frame_info *frame, CORE_ADDR pc)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
/* Unknown languages just use the cplus demangler. */
|
||
static char *unk_lang_demangle (const char *mangled, int options)
|
||
{
|
||
return cplus_demangle (mangled, options);
|
||
}
|
||
|
||
static char *unk_lang_class_name (const char *mangled)
|
||
{
|
||
return NULL;
|
||
}
|
||
|
||
static const struct op_print unk_op_print_tab[] =
|
||
{
|
||
{NULL, OP_NULL, PREC_NULL, 0}
|
||
};
|
||
|
||
static void
|
||
unknown_language_arch_info (struct gdbarch *gdbarch,
|
||
struct language_arch_info *lai)
|
||
{
|
||
lai->string_char_type = builtin_type (gdbarch)->builtin_char;
|
||
lai->bool_type_default = builtin_type (gdbarch)->builtin_int;
|
||
lai->primitive_type_vector = GDBARCH_OBSTACK_CALLOC (gdbarch, 1,
|
||
struct type *);
|
||
}
|
||
|
||
const struct language_defn unknown_language_defn =
|
||
{
|
||
"unknown",
|
||
language_unknown,
|
||
range_check_off,
|
||
case_sensitive_on,
|
||
array_row_major,
|
||
macro_expansion_no,
|
||
&exp_descriptor_standard,
|
||
unk_lang_parser,
|
||
unk_lang_error,
|
||
null_post_parser,
|
||
unk_lang_printchar, /* Print character constant */
|
||
unk_lang_printstr,
|
||
unk_lang_emit_char,
|
||
unk_lang_print_type, /* Print a type using appropriate syntax */
|
||
default_print_typedef, /* Print a typedef using appropriate syntax */
|
||
unk_lang_val_print, /* Print a value using appropriate syntax */
|
||
unk_lang_value_print, /* Print a top-level value */
|
||
default_read_var_value, /* la_read_var_value */
|
||
unk_lang_trampoline, /* Language specific skip_trampoline */
|
||
"this", /* name_of_this */
|
||
basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
|
||
basic_lookup_transparent_type,/* lookup_transparent_type */
|
||
unk_lang_demangle, /* Language specific symbol demangler */
|
||
unk_lang_class_name, /* Language specific
|
||
class_name_from_physname */
|
||
unk_op_print_tab, /* expression operators for printing */
|
||
1, /* c-style arrays */
|
||
0, /* String lower bound */
|
||
default_word_break_characters,
|
||
default_make_symbol_completion_list,
|
||
unknown_language_arch_info, /* la_language_arch_info. */
|
||
default_print_array_index,
|
||
default_pass_by_reference,
|
||
default_get_string,
|
||
NULL, /* la_get_symbol_name_cmp */
|
||
iterate_over_symbols,
|
||
LANG_MAGIC
|
||
};
|
||
|
||
/* These two structs define fake entries for the "local" and "auto"
|
||
options. */
|
||
const struct language_defn auto_language_defn =
|
||
{
|
||
"auto",
|
||
language_auto,
|
||
range_check_off,
|
||
case_sensitive_on,
|
||
array_row_major,
|
||
macro_expansion_no,
|
||
&exp_descriptor_standard,
|
||
unk_lang_parser,
|
||
unk_lang_error,
|
||
null_post_parser,
|
||
unk_lang_printchar, /* Print character constant */
|
||
unk_lang_printstr,
|
||
unk_lang_emit_char,
|
||
unk_lang_print_type, /* Print a type using appropriate syntax */
|
||
default_print_typedef, /* Print a typedef using appropriate syntax */
|
||
unk_lang_val_print, /* Print a value using appropriate syntax */
|
||
unk_lang_value_print, /* Print a top-level value */
|
||
default_read_var_value, /* la_read_var_value */
|
||
unk_lang_trampoline, /* Language specific skip_trampoline */
|
||
"this", /* name_of_this */
|
||
basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
|
||
basic_lookup_transparent_type,/* lookup_transparent_type */
|
||
unk_lang_demangle, /* Language specific symbol demangler */
|
||
unk_lang_class_name, /* Language specific
|
||
class_name_from_physname */
|
||
unk_op_print_tab, /* expression operators for printing */
|
||
1, /* c-style arrays */
|
||
0, /* String lower bound */
|
||
default_word_break_characters,
|
||
default_make_symbol_completion_list,
|
||
unknown_language_arch_info, /* la_language_arch_info. */
|
||
default_print_array_index,
|
||
default_pass_by_reference,
|
||
default_get_string,
|
||
NULL, /* la_get_symbol_name_cmp */
|
||
iterate_over_symbols,
|
||
LANG_MAGIC
|
||
};
|
||
|
||
const struct language_defn local_language_defn =
|
||
{
|
||
"local",
|
||
language_auto,
|
||
range_check_off,
|
||
case_sensitive_on,
|
||
array_row_major,
|
||
macro_expansion_no,
|
||
&exp_descriptor_standard,
|
||
unk_lang_parser,
|
||
unk_lang_error,
|
||
null_post_parser,
|
||
unk_lang_printchar, /* Print character constant */
|
||
unk_lang_printstr,
|
||
unk_lang_emit_char,
|
||
unk_lang_print_type, /* Print a type using appropriate syntax */
|
||
default_print_typedef, /* Print a typedef using appropriate syntax */
|
||
unk_lang_val_print, /* Print a value using appropriate syntax */
|
||
unk_lang_value_print, /* Print a top-level value */
|
||
default_read_var_value, /* la_read_var_value */
|
||
unk_lang_trampoline, /* Language specific skip_trampoline */
|
||
"this", /* name_of_this */
|
||
basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
|
||
basic_lookup_transparent_type,/* lookup_transparent_type */
|
||
unk_lang_demangle, /* Language specific symbol demangler */
|
||
unk_lang_class_name, /* Language specific
|
||
class_name_from_physname */
|
||
unk_op_print_tab, /* expression operators for printing */
|
||
1, /* c-style arrays */
|
||
0, /* String lower bound */
|
||
default_word_break_characters,
|
||
default_make_symbol_completion_list,
|
||
unknown_language_arch_info, /* la_language_arch_info. */
|
||
default_print_array_index,
|
||
default_pass_by_reference,
|
||
default_get_string,
|
||
NULL, /* la_get_symbol_name_cmp */
|
||
iterate_over_symbols,
|
||
LANG_MAGIC
|
||
};
|
||
|
||
/* Per-architecture language information. */
|
||
|
||
static struct gdbarch_data *language_gdbarch_data;
|
||
|
||
struct language_gdbarch
|
||
{
|
||
/* A vector of per-language per-architecture info. Indexed by "enum
|
||
language". */
|
||
struct language_arch_info arch_info[nr_languages];
|
||
};
|
||
|
||
static void *
|
||
language_gdbarch_post_init (struct gdbarch *gdbarch)
|
||
{
|
||
struct language_gdbarch *l;
|
||
int i;
|
||
|
||
l = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct language_gdbarch);
|
||
for (i = 0; i < languages_size; i++)
|
||
{
|
||
if (languages[i] != NULL
|
||
&& languages[i]->la_language_arch_info != NULL)
|
||
languages[i]->la_language_arch_info
|
||
(gdbarch, l->arch_info + languages[i]->la_language);
|
||
}
|
||
return l;
|
||
}
|
||
|
||
struct type *
|
||
language_string_char_type (const struct language_defn *la,
|
||
struct gdbarch *gdbarch)
|
||
{
|
||
struct language_gdbarch *ld = gdbarch_data (gdbarch,
|
||
language_gdbarch_data);
|
||
|
||
return ld->arch_info[la->la_language].string_char_type;
|
||
}
|
||
|
||
struct type *
|
||
language_bool_type (const struct language_defn *la,
|
||
struct gdbarch *gdbarch)
|
||
{
|
||
struct language_gdbarch *ld = gdbarch_data (gdbarch,
|
||
language_gdbarch_data);
|
||
|
||
if (ld->arch_info[la->la_language].bool_type_symbol)
|
||
{
|
||
struct symbol *sym;
|
||
|
||
sym = lookup_symbol (ld->arch_info[la->la_language].bool_type_symbol,
|
||
NULL, VAR_DOMAIN, NULL);
|
||
if (sym)
|
||
{
|
||
struct type *type = SYMBOL_TYPE (sym);
|
||
|
||
if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
|
||
return type;
|
||
}
|
||
}
|
||
|
||
return ld->arch_info[la->la_language].bool_type_default;
|
||
}
|
||
|
||
struct type *
|
||
language_lookup_primitive_type_by_name (const struct language_defn *la,
|
||
struct gdbarch *gdbarch,
|
||
const char *name)
|
||
{
|
||
struct language_gdbarch *ld = gdbarch_data (gdbarch,
|
||
language_gdbarch_data);
|
||
struct type *const *p;
|
||
|
||
for (p = ld->arch_info[la->la_language].primitive_type_vector;
|
||
(*p) != NULL;
|
||
p++)
|
||
{
|
||
if (strcmp (TYPE_NAME (*p), name) == 0)
|
||
return (*p);
|
||
}
|
||
return (NULL);
|
||
}
|
||
|
||
/* Initialize the language routines. */
|
||
|
||
void
|
||
_initialize_language (void)
|
||
{
|
||
static const char *const type_or_range_names[]
|
||
= { "on", "off", "warn", "auto", NULL };
|
||
|
||
static const char *const case_sensitive_names[]
|
||
= { "on", "off", "auto", NULL };
|
||
|
||
language_gdbarch_data
|
||
= gdbarch_data_register_post_init (language_gdbarch_post_init);
|
||
|
||
/* GDB commands for language specific stuff. */
|
||
|
||
add_prefix_cmd ("check", no_class, set_check,
|
||
_("Set the status of the type/range checker."),
|
||
&setchecklist, "set check ", 0, &setlist);
|
||
add_alias_cmd ("c", "check", no_class, 1, &setlist);
|
||
add_alias_cmd ("ch", "check", no_class, 1, &setlist);
|
||
|
||
add_prefix_cmd ("check", no_class, show_check,
|
||
_("Show the status of the type/range checker."),
|
||
&showchecklist, "show check ", 0, &showlist);
|
||
add_alias_cmd ("c", "check", no_class, 1, &showlist);
|
||
add_alias_cmd ("ch", "check", no_class, 1, &showlist);
|
||
|
||
add_setshow_enum_cmd ("range", class_support, type_or_range_names,
|
||
&range,
|
||
_("Set range checking. (on/warn/off/auto)"),
|
||
_("Show range checking. (on/warn/off/auto)"),
|
||
NULL, set_range_command,
|
||
show_range_command,
|
||
&setchecklist, &showchecklist);
|
||
|
||
add_setshow_enum_cmd ("case-sensitive", class_support, case_sensitive_names,
|
||
&case_sensitive, _("\
|
||
Set case sensitivity in name search. (on/off/auto)"), _("\
|
||
Show case sensitivity in name search. (on/off/auto)"), _("\
|
||
For Fortran the default is off; for other languages the default is on."),
|
||
set_case_command,
|
||
show_case_command,
|
||
&setlist, &showlist);
|
||
|
||
add_language (&auto_language_defn);
|
||
add_language (&local_language_defn);
|
||
add_language (&unknown_language_defn);
|
||
|
||
language = xstrdup ("auto");
|
||
type = xstrdup ("auto");
|
||
range = xstrdup ("auto");
|
||
case_sensitive = xstrdup ("auto");
|
||
|
||
/* Have the above take effect. */
|
||
set_language (language_auto);
|
||
}
|