mirror of
https://sourceware.org/git/binutils-gdb.git
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f86f5ca3f5
* p-lang.c: Eliminate "register". * c-lang.c: Ditto. * expprint.c: Ditto. * f-lang.c: Ditto. * jv-lang.c: Ditto. * language.c: Ditto. * m2-lang.c: Ditto. * parse.c: Ditto. * scm-lang.c: Ditto. * objc-lang.c: Ditto.
1428 lines
38 KiB
C
1428 lines
38 KiB
C
/* Multiple source language support for GDB.
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Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000,
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2001, 2002, 2003 Free Software 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 2 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, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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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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extern void _initialize_language (void);
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static void show_language_command (char *, int);
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static void set_language_command (char *, int);
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static void show_type_command (char *, int);
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static void set_type_command (char *, int);
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static void show_range_command (char *, int);
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static void set_range_command (char *, int);
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static void show_case_command (char *, int);
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static void set_case_command (char *, int);
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static void set_case_str (void);
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static void set_range_str (void);
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static void set_type_str (void);
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static void set_lang_str (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_type_range_case (void);
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static void unk_lang_emit_char (int c, struct ui_file *stream, int quoter);
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static void unk_lang_printchar (int c, struct ui_file *stream);
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static void unk_lang_printstr (struct ui_file * stream, char *string,
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unsigned int length, int width,
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int force_ellipses);
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static struct type *unk_lang_create_fundamental_type (struct objfile *, int);
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static void unk_lang_print_type (struct type *, char *, struct ui_file *,
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int, int);
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static int unk_lang_val_print (struct type *, char *, int, CORE_ADDR,
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struct ui_file *, int, int, int,
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enum val_prettyprint);
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static int unk_lang_value_print (struct value *, struct ui_file *, int, enum val_prettyprint);
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static CORE_ADDR unk_lang_trampoline (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 type_mode type_mode = type_mode_auto;
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enum type_check type_check = type_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 "set language/type/range" commands all put stuff in these
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buffers. This is to make them work as set/show commands. The
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user's string is copied here, then the set_* commands look at
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them and update them to something that looks nice when it is
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printed out. */
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static char *language;
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static char *type;
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static char *range;
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static 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 (char *ignore, int from_tty)
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{
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enum language flang; /* The language of the current frame */
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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)
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{
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int i;
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enum language flang;
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char *err_lang;
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if (!language || !language[0])
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{
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printf_unfiltered ("The currently understood settings are:\n\n");
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printf_unfiltered ("local or auto Automatic setting based on source file\n");
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for (i = 0; i < languages_size; ++i)
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{
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/* Already dealt with these above. */
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if (languages[i]->la_language == language_unknown
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|| languages[i]->la_language == language_auto)
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continue;
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/* FIXME for now assume that the human-readable name is just
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a capitalization of the internal name. */
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printf_unfiltered ("%-16s Use the %c%s language\n",
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languages[i]->la_name,
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/* Capitalize first letter of language
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name. */
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toupper (languages[i]->la_name[0]),
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languages[i]->la_name + 1);
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}
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/* Restore the silly string. */
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set_language (current_language->la_language);
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return;
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}
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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 (STREQ (languages[i]->la_name, language))
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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 known. */
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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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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_type_range_case ();
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set_lang_str ();
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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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/* Reset the language (esp. the global string "language") to the
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correct values. */
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err_lang = savestring (language, strlen (language));
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make_cleanup (xfree, err_lang); /* Free it after error */
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set_language (current_language->la_language);
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error ("Unknown language `%s'.", err_lang);
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}
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/* Show command. Display a warning if the type setting does
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not match the current language. */
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static void
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show_type_command (char *ignore, int from_tty)
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{
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if (type_check != current_language->la_type_check)
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printf_unfiltered (
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"Warning: the current type check setting does not match the language.\n");
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}
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/* Set command. Change the setting for type checking. */
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static void
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set_type_command (char *ignore, int from_tty)
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{
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if (STREQ (type, "on"))
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{
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type_check = type_check_on;
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type_mode = type_mode_manual;
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}
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else if (STREQ (type, "warn"))
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{
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type_check = type_check_warn;
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type_mode = type_mode_manual;
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}
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else if (STREQ (type, "off"))
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{
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type_check = type_check_off;
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type_mode = type_mode_manual;
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}
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else if (STREQ (type, "auto"))
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{
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type_mode = type_mode_auto;
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set_type_range_case ();
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/* Avoid hitting the set_type_str call below. We
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did it in set_type_range_case. */
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return;
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}
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else
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{
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warning ("Unrecognized type check setting: \"%s\"", type);
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}
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set_type_str ();
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show_type_command ((char *) NULL, from_tty);
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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 (char *ignore, int from_tty)
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{
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if (range_check != current_language->la_range_check)
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printf_unfiltered (
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"Warning: the current range check setting 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)
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{
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if (STREQ (range, "on"))
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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 (STREQ (range, "warn"))
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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 (STREQ (range, "off"))
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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 (STREQ (range, "auto"))
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{
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range_mode = range_mode_auto;
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set_type_range_case ();
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/* Avoid hitting the set_range_str call below. We
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did it in set_type_range_case. */
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return;
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}
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else
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{
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warning ("Unrecognized range check setting: \"%s\"", range);
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}
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set_range_str ();
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show_range_command ((char *) 0, from_tty);
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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 (char *ignore, int from_tty)
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{
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if (case_sensitivity != current_language->la_case_sensitivity)
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printf_unfiltered(
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"Warning: the current case sensitivity setting does not match 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)
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{
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if (STREQ (case_sensitive, "on"))
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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 (STREQ (case_sensitive, "off"))
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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 (STREQ (case_sensitive, "auto"))
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{
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case_mode = case_mode_auto;
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set_type_range_case ();
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/* Avoid hitting the set_case_str call below. We
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did it in set_type_range_case. */
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return;
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}
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else
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{
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warning ("Unrecognized case-sensitive setting: \"%s\"", case_sensitive);
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}
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set_case_str();
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show_case_command ((char *) NULL, from_tty);
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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_type_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 (type_mode == type_mode_auto)
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type_check = current_language->la_type_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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set_type_str ();
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set_range_str ();
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set_case_str ();
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}
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/* Set current language to (enum language) LANG. Returns previous 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_type_range_case ();
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set_lang_str ();
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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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/* This page contains functions that update the global vars
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language, type and range. */
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static void
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set_lang_str (void)
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{
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char *prefix = "";
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if (language)
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xfree (language);
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if (language_mode == language_mode_auto)
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prefix = "auto; currently ";
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language = concat (prefix, current_language->la_name, NULL);
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}
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static void
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set_type_str (void)
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{
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char *tmp = NULL, *prefix = "";
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if (type)
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xfree (type);
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if (type_mode == type_mode_auto)
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prefix = "auto; currently ";
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switch (type_check)
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{
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case type_check_on:
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tmp = "on";
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break;
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case type_check_off:
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tmp = "off";
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break;
|
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case type_check_warn:
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tmp = "warn";
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break;
|
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default:
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error ("Unrecognized type check setting.");
|
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}
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|
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type = concat (prefix, tmp, NULL);
|
||
}
|
||
|
||
static void
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||
set_range_str (void)
|
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{
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char *tmp, *pref = "";
|
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|
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if (range_mode == range_mode_auto)
|
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pref = "auto; currently ";
|
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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;
|
||
case range_check_off:
|
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tmp = "off";
|
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break;
|
||
case range_check_warn:
|
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tmp = "warn";
|
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break;
|
||
default:
|
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error ("Unrecognized range check setting.");
|
||
}
|
||
|
||
if (range)
|
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xfree (range);
|
||
range = concat (pref, tmp, NULL);
|
||
}
|
||
|
||
static void
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||
set_case_str (void)
|
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{
|
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char *tmp = NULL, *prefix = "";
|
||
|
||
if (case_mode==case_mode_auto)
|
||
prefix = "auto; currently ";
|
||
|
||
switch (case_sensitivity)
|
||
{
|
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case case_sensitive_on:
|
||
tmp = "on";
|
||
break;
|
||
case case_sensitive_off:
|
||
tmp = "off";
|
||
break;
|
||
default:
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error ("Unrecognized case-sensitive setting.");
|
||
}
|
||
|
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xfree (case_sensitive);
|
||
case_sensitive = concat (prefix, tmp, NULL);
|
||
}
|
||
|
||
/* Print out the current language settings: language, range and
|
||
type checking. If QUIETLY, print only what has changed. */
|
||
|
||
void
|
||
language_info (int quietly)
|
||
{
|
||
if (quietly && expected_language == current_language)
|
||
return;
|
||
|
||
expected_language = current_language;
|
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printf_unfiltered ("Current language: %s\n", language);
|
||
show_language_command ((char *) 0, 1);
|
||
|
||
if (!quietly)
|
||
{
|
||
printf_unfiltered ("Type checking: %s\n", type);
|
||
show_type_command ((char *) 0, 1);
|
||
printf_unfiltered ("Range checking: %s\n", range);
|
||
show_range_command ((char *) 0, 1);
|
||
printf_unfiltered ("Case sensitivity: %s\n", case_sensitive);
|
||
show_case_command ((char *) 0, 1);
|
||
}
|
||
}
|
||
|
||
/* Return the result of a binary operation. */
|
||
|
||
#if 0 /* Currently unused */
|
||
|
||
struct type *
|
||
binop_result_type (struct value *v1, struct value *v2)
|
||
{
|
||
int size, uns;
|
||
struct type *t1 = check_typedef (VALUE_TYPE (v1));
|
||
struct type *t2 = check_typedef (VALUE_TYPE (v2));
|
||
|
||
int l1 = TYPE_LENGTH (t1);
|
||
int l2 = TYPE_LENGTH (t2);
|
||
|
||
switch (current_language->la_language)
|
||
{
|
||
case language_c:
|
||
case language_cplus:
|
||
case language_objc:
|
||
if (TYPE_CODE (t1) == TYPE_CODE_FLT)
|
||
return TYPE_CODE (t2) == TYPE_CODE_FLT && l2 > l1 ?
|
||
VALUE_TYPE (v2) : VALUE_TYPE (v1);
|
||
else if (TYPE_CODE (t2) == TYPE_CODE_FLT)
|
||
return TYPE_CODE (t1) == TYPE_CODE_FLT && l1 > l2 ?
|
||
VALUE_TYPE (v1) : VALUE_TYPE (v2);
|
||
else if (TYPE_UNSIGNED (t1) && l1 > l2)
|
||
return VALUE_TYPE (v1);
|
||
else if (TYPE_UNSIGNED (t2) && l2 > l1)
|
||
return VALUE_TYPE (v2);
|
||
else /* Both are signed. Result is the longer type */
|
||
return l1 > l2 ? VALUE_TYPE (v1) : VALUE_TYPE (v2);
|
||
break;
|
||
case language_m2:
|
||
/* If we are doing type-checking, l1 should equal l2, so this is
|
||
not needed. */
|
||
return l1 > l2 ? VALUE_TYPE (v1) : VALUE_TYPE (v2);
|
||
break;
|
||
}
|
||
internal_error (__FILE__, __LINE__, "failed internal consistency check");
|
||
return (struct type *) 0; /* For lint */
|
||
}
|
||
|
||
#endif /* 0 */
|
||
|
||
|
||
/* This page contains functions that return format strings for
|
||
printf for printing out numbers in different formats */
|
||
|
||
/* Returns the appropriate printf format for hexadecimal
|
||
numbers. */
|
||
char *
|
||
local_hex_format_custom (char *pre)
|
||
{
|
||
static char form[50];
|
||
|
||
strcpy (form, local_hex_format_prefix ());
|
||
strcat (form, "%");
|
||
strcat (form, pre);
|
||
strcat (form, local_hex_format_specifier ());
|
||
strcat (form, local_hex_format_suffix ());
|
||
return form;
|
||
}
|
||
|
||
/* Converts a LONGEST to custom hexadecimal and stores it in a static
|
||
string. Returns a pointer to this string. */
|
||
char *
|
||
local_hex_string (LONGEST num)
|
||
{
|
||
return local_hex_string_custom (num, "l");
|
||
}
|
||
|
||
/* Converts a LONGEST number to custom hexadecimal and stores it in a static
|
||
string. Returns a pointer to this string. Note that the width parameter
|
||
should end with "l", e.g. "08l" as with calls to local_hex_string_custom */
|
||
|
||
char *
|
||
local_hex_string_custom (LONGEST num, char *width)
|
||
{
|
||
#define RESULT_BUF_LEN 50
|
||
static char res2[RESULT_BUF_LEN];
|
||
char format[RESULT_BUF_LEN];
|
||
int field_width;
|
||
int num_len;
|
||
int num_pad_chars;
|
||
char *pad_char; /* string with one character */
|
||
int pad_on_left;
|
||
char *parse_ptr;
|
||
char temp_nbr_buf[RESULT_BUF_LEN];
|
||
|
||
/* Use phex_nz to print the number into a string, then
|
||
build the result string from local_hex_format_prefix, padding and
|
||
the hex representation as indicated by "width". */
|
||
strcpy (temp_nbr_buf, phex_nz (num, sizeof (num)));
|
||
/* parse width */
|
||
parse_ptr = width;
|
||
pad_on_left = 1;
|
||
pad_char = " ";
|
||
if (*parse_ptr == '-')
|
||
{
|
||
parse_ptr++;
|
||
pad_on_left = 0;
|
||
}
|
||
if (*parse_ptr == '0')
|
||
{
|
||
parse_ptr++;
|
||
if (pad_on_left)
|
||
pad_char = "0"; /* If padding is on the right, it is blank */
|
||
}
|
||
field_width = atoi (parse_ptr);
|
||
num_len = strlen (temp_nbr_buf);
|
||
num_pad_chars = field_width - strlen (temp_nbr_buf); /* possibly negative */
|
||
|
||
if (strlen (local_hex_format_prefix ()) + num_len + num_pad_chars
|
||
>= RESULT_BUF_LEN) /* paranoia */
|
||
internal_error (__FILE__, __LINE__,
|
||
"local_hex_string_custom: insufficient space to store result");
|
||
|
||
strcpy (res2, local_hex_format_prefix ());
|
||
if (pad_on_left)
|
||
{
|
||
while (num_pad_chars > 0)
|
||
{
|
||
strcat (res2, pad_char);
|
||
num_pad_chars--;
|
||
}
|
||
}
|
||
strcat (res2, temp_nbr_buf);
|
||
if (!pad_on_left)
|
||
{
|
||
while (num_pad_chars > 0)
|
||
{
|
||
strcat (res2, pad_char);
|
||
num_pad_chars--;
|
||
}
|
||
}
|
||
return res2;
|
||
|
||
} /* local_hex_string_custom */
|
||
|
||
/* Returns the appropriate printf format for octal
|
||
numbers. */
|
||
char *
|
||
local_octal_format_custom (char *pre)
|
||
{
|
||
static char form[50];
|
||
|
||
strcpy (form, local_octal_format_prefix ());
|
||
strcat (form, "%");
|
||
strcat (form, pre);
|
||
strcat (form, local_octal_format_specifier ());
|
||
strcat (form, local_octal_format_suffix ());
|
||
return form;
|
||
}
|
||
|
||
/* Returns the appropriate printf format for decimal numbers. */
|
||
char *
|
||
local_decimal_format_custom (char *pre)
|
||
{
|
||
static char form[50];
|
||
|
||
strcpy (form, local_decimal_format_prefix ());
|
||
strcat (form, "%");
|
||
strcat (form, pre);
|
||
strcat (form, local_decimal_format_specifier ());
|
||
strcat (form, local_decimal_format_suffix ());
|
||
return form;
|
||
}
|
||
|
||
#if 0
|
||
/* This page contains functions that are used in type/range checking.
|
||
They all return zero if the type/range check fails.
|
||
|
||
It is hoped that these will make extending GDB to parse different
|
||
languages a little easier. These are primarily used in eval.c when
|
||
evaluating expressions and making sure that their types are correct.
|
||
Instead of having a mess of conjucted/disjuncted expressions in an "if",
|
||
the ideas of type can be wrapped up in the following functions.
|
||
|
||
Note that some of them are not currently dependent upon which language
|
||
is currently being parsed. For example, floats are the same in
|
||
C and Modula-2 (ie. the only floating point type has TYPE_CODE of
|
||
TYPE_CODE_FLT), while booleans are different. */
|
||
|
||
/* Returns non-zero if its argument is a simple type. This is the same for
|
||
both Modula-2 and for C. In the C case, TYPE_CODE_CHAR will never occur,
|
||
and thus will never cause the failure of the test. */
|
||
int
|
||
simple_type (struct type *type)
|
||
{
|
||
CHECK_TYPEDEF (type);
|
||
switch (TYPE_CODE (type))
|
||
{
|
||
case TYPE_CODE_INT:
|
||
case TYPE_CODE_CHAR:
|
||
case TYPE_CODE_ENUM:
|
||
case TYPE_CODE_FLT:
|
||
case TYPE_CODE_RANGE:
|
||
case TYPE_CODE_BOOL:
|
||
return 1;
|
||
|
||
default:
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
/* Returns non-zero if its argument is of an ordered type.
|
||
An ordered type is one in which the elements can be tested for the
|
||
properties of "greater than", "less than", etc, or for which the
|
||
operations "increment" or "decrement" make sense. */
|
||
int
|
||
ordered_type (struct type *type)
|
||
{
|
||
CHECK_TYPEDEF (type);
|
||
switch (TYPE_CODE (type))
|
||
{
|
||
case TYPE_CODE_INT:
|
||
case TYPE_CODE_CHAR:
|
||
case TYPE_CODE_ENUM:
|
||
case TYPE_CODE_FLT:
|
||
case TYPE_CODE_RANGE:
|
||
return 1;
|
||
|
||
default:
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
/* Returns non-zero if the two types are the same */
|
||
int
|
||
same_type (struct type *arg1, struct type *arg2)
|
||
{
|
||
CHECK_TYPEDEF (type);
|
||
if (structured_type (arg1) ? !structured_type (arg2) : structured_type (arg2))
|
||
/* One is structured and one isn't */
|
||
return 0;
|
||
else if (structured_type (arg1) && structured_type (arg2))
|
||
return arg1 == arg2;
|
||
else if (numeric_type (arg1) && numeric_type (arg2))
|
||
return (TYPE_CODE (arg2) == TYPE_CODE (arg1)) &&
|
||
(TYPE_UNSIGNED (arg1) == TYPE_UNSIGNED (arg2))
|
||
? 1 : 0;
|
||
else
|
||
return arg1 == arg2;
|
||
}
|
||
|
||
/* Returns non-zero if the type is integral */
|
||
int
|
||
integral_type (struct type *type)
|
||
{
|
||
CHECK_TYPEDEF (type);
|
||
switch (current_language->la_language)
|
||
{
|
||
case language_c:
|
||
case language_cplus:
|
||
case language_objc:
|
||
return (TYPE_CODE (type) != TYPE_CODE_INT) &&
|
||
(TYPE_CODE (type) != TYPE_CODE_ENUM) ? 0 : 1;
|
||
case language_m2:
|
||
case language_pascal:
|
||
return TYPE_CODE (type) != TYPE_CODE_INT ? 0 : 1;
|
||
default:
|
||
error ("Language not supported.");
|
||
}
|
||
}
|
||
|
||
/* Returns non-zero if the value is numeric */
|
||
int
|
||
numeric_type (struct type *type)
|
||
{
|
||
CHECK_TYPEDEF (type);
|
||
switch (TYPE_CODE (type))
|
||
{
|
||
case TYPE_CODE_INT:
|
||
case TYPE_CODE_FLT:
|
||
return 1;
|
||
|
||
default:
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
/* Returns non-zero if the value is a character type */
|
||
int
|
||
character_type (struct type *type)
|
||
{
|
||
CHECK_TYPEDEF (type);
|
||
switch (current_language->la_language)
|
||
{
|
||
case language_m2:
|
||
case language_pascal:
|
||
return TYPE_CODE (type) != TYPE_CODE_CHAR ? 0 : 1;
|
||
|
||
case language_c:
|
||
case language_cplus:
|
||
case language_objc:
|
||
return (TYPE_CODE (type) == TYPE_CODE_INT) &&
|
||
TYPE_LENGTH (type) == sizeof (char)
|
||
? 1 : 0;
|
||
default:
|
||
return (0);
|
||
}
|
||
}
|
||
|
||
/* Returns non-zero if the value is a string type */
|
||
int
|
||
string_type (struct type *type)
|
||
{
|
||
CHECK_TYPEDEF (type);
|
||
switch (current_language->la_language)
|
||
{
|
||
case language_m2:
|
||
case language_pascal:
|
||
return TYPE_CODE (type) != TYPE_CODE_STRING ? 0 : 1;
|
||
|
||
case language_c:
|
||
case language_cplus:
|
||
case language_objc:
|
||
/* C does not have distinct string type. */
|
||
return (0);
|
||
default:
|
||
return (0);
|
||
}
|
||
}
|
||
|
||
/* Returns non-zero if the value is a boolean type */
|
||
int
|
||
boolean_type (struct type *type)
|
||
{
|
||
CHECK_TYPEDEF (type);
|
||
if (TYPE_CODE (type) == TYPE_CODE_BOOL)
|
||
return 1;
|
||
switch (current_language->la_language)
|
||
{
|
||
case language_c:
|
||
case language_cplus:
|
||
case language_objc:
|
||
/* Might be more cleanly handled by having a
|
||
TYPE_CODE_INT_NOT_BOOL for (the deleted) CHILL and such
|
||
languages, or a TYPE_CODE_INT_OR_BOOL for C. */
|
||
if (TYPE_CODE (type) == TYPE_CODE_INT)
|
||
return 1;
|
||
default:
|
||
break;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/* Returns non-zero if the value is a floating-point type */
|
||
int
|
||
float_type (struct type *type)
|
||
{
|
||
CHECK_TYPEDEF (type);
|
||
return TYPE_CODE (type) == TYPE_CODE_FLT;
|
||
}
|
||
|
||
/* Returns non-zero if the value is a pointer type */
|
||
int
|
||
pointer_type (struct type *type)
|
||
{
|
||
return TYPE_CODE (type) == TYPE_CODE_PTR ||
|
||
TYPE_CODE (type) == TYPE_CODE_REF;
|
||
}
|
||
|
||
/* Returns non-zero if the value is a structured type */
|
||
int
|
||
structured_type (struct type *type)
|
||
{
|
||
CHECK_TYPEDEF (type);
|
||
switch (current_language->la_language)
|
||
{
|
||
case language_c:
|
||
case language_cplus:
|
||
case language_objc:
|
||
return (TYPE_CODE (type) == TYPE_CODE_STRUCT) ||
|
||
(TYPE_CODE (type) == TYPE_CODE_UNION) ||
|
||
(TYPE_CODE (type) == TYPE_CODE_ARRAY);
|
||
case language_pascal:
|
||
return (TYPE_CODE(type) == TYPE_CODE_STRUCT) ||
|
||
(TYPE_CODE(type) == TYPE_CODE_UNION) ||
|
||
(TYPE_CODE(type) == TYPE_CODE_SET) ||
|
||
(TYPE_CODE(type) == TYPE_CODE_ARRAY);
|
||
case language_m2:
|
||
return (TYPE_CODE (type) == TYPE_CODE_STRUCT) ||
|
||
(TYPE_CODE (type) == TYPE_CODE_SET) ||
|
||
(TYPE_CODE (type) == TYPE_CODE_ARRAY);
|
||
default:
|
||
return (0);
|
||
}
|
||
}
|
||
#endif
|
||
|
||
struct type *
|
||
lang_bool_type (void)
|
||
{
|
||
struct symbol *sym;
|
||
struct type *type;
|
||
switch (current_language->la_language)
|
||
{
|
||
case language_fortran:
|
||
sym = lookup_symbol ("logical", NULL, VAR_DOMAIN, NULL, NULL);
|
||
if (sym)
|
||
{
|
||
type = SYMBOL_TYPE (sym);
|
||
if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
|
||
return type;
|
||
}
|
||
return builtin_type_f_logical_s2;
|
||
case language_cplus:
|
||
case language_pascal:
|
||
if (current_language->la_language==language_cplus)
|
||
{sym = lookup_symbol ("bool", NULL, VAR_DOMAIN, NULL, NULL);}
|
||
else
|
||
{sym = lookup_symbol ("boolean", NULL, VAR_DOMAIN, NULL, NULL);}
|
||
if (sym)
|
||
{
|
||
type = SYMBOL_TYPE (sym);
|
||
if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
|
||
return type;
|
||
}
|
||
return builtin_type_bool;
|
||
case language_java:
|
||
sym = lookup_symbol ("boolean", NULL, VAR_DOMAIN, NULL, NULL);
|
||
if (sym)
|
||
{
|
||
type = SYMBOL_TYPE (sym);
|
||
if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
|
||
return type;
|
||
}
|
||
return java_boolean_type;
|
||
default:
|
||
return builtin_type_int;
|
||
}
|
||
}
|
||
|
||
/* This page contains functions that return info about
|
||
(struct value) values used in GDB. */
|
||
|
||
/* Returns non-zero if the value VAL represents a true value. */
|
||
int
|
||
value_true (struct value *val)
|
||
{
|
||
/* It is possible that we should have some sort of error if a non-boolean
|
||
value is used in this context. Possibly dependent on some kind of
|
||
"boolean-checking" option like range checking. But it should probably
|
||
not depend on the language except insofar as is necessary to identify
|
||
a "boolean" value (i.e. in C using a float, pointer, etc., as a boolean
|
||
should be an error, probably). */
|
||
return !value_logical_not (val);
|
||
}
|
||
|
||
/* This page contains functions for the printing out of
|
||
error messages that occur during type- and range-
|
||
checking. */
|
||
|
||
/* These are called when a language fails a type- or range-check. The
|
||
first argument should be a printf()-style format string, and the
|
||
rest of the arguments should be its arguments. If
|
||
[type|range]_check is [type|range]_check_on, an error is printed;
|
||
if [type|range]_check_warn, a warning; otherwise just the
|
||
message. */
|
||
|
||
void
|
||
type_error (const char *string,...)
|
||
{
|
||
va_list args;
|
||
va_start (args, string);
|
||
|
||
switch (type_check)
|
||
{
|
||
case type_check_warn:
|
||
vwarning (string, args);
|
||
break;
|
||
case type_check_on:
|
||
verror (string, args);
|
||
break;
|
||
case type_check_off:
|
||
/* FIXME: cagney/2002-01-30: Should this function print anything
|
||
when type 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);
|
||
}
|
||
|
||
void
|
||
range_error (const char *string,...)
|
||
{
|
||
va_list args;
|
||
va_start (args, string);
|
||
|
||
switch (range_check)
|
||
{
|
||
case range_check_warn:
|
||
vwarning (string, args);
|
||
break;
|
||
case range_check_on:
|
||
verror (string, args);
|
||
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 (STREQ (languages[i]->la_name, str))
|
||
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)
|
||
{
|
||
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;
|
||
}
|
||
|
||
/* 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 (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) (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;
|
||
}
|
||
|
||
|
||
/* 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 ui_file *stream, int quoter)
|
||
{
|
||
error ("internal error - unimplemented function unk_lang_emit_char called.");
|
||
}
|
||
|
||
static void
|
||
unk_lang_printchar (int c, struct ui_file *stream)
|
||
{
|
||
error ("internal error - unimplemented function unk_lang_printchar called.");
|
||
}
|
||
|
||
static void
|
||
unk_lang_printstr (struct ui_file *stream, char *string, unsigned int length,
|
||
int width, int force_ellipses)
|
||
{
|
||
error ("internal error - unimplemented function unk_lang_printstr called.");
|
||
}
|
||
|
||
static struct type *
|
||
unk_lang_create_fundamental_type (struct objfile *objfile, int typeid)
|
||
{
|
||
error ("internal error - unimplemented function unk_lang_create_fundamental_type called.");
|
||
}
|
||
|
||
static void
|
||
unk_lang_print_type (struct type *type, char *varstring, struct ui_file *stream,
|
||
int show, int level)
|
||
{
|
||
error ("internal error - unimplemented function unk_lang_print_type called.");
|
||
}
|
||
|
||
static int
|
||
unk_lang_val_print (struct type *type, char *valaddr, int embedded_offset,
|
||
CORE_ADDR address, struct ui_file *stream, int format,
|
||
int deref_ref, int recurse, enum val_prettyprint pretty)
|
||
{
|
||
error ("internal error - unimplemented function unk_lang_val_print called.");
|
||
}
|
||
|
||
static int
|
||
unk_lang_value_print (struct value *val, struct ui_file *stream, int format,
|
||
enum val_prettyprint pretty)
|
||
{
|
||
error ("internal error - unimplemented function unk_lang_value_print called.");
|
||
}
|
||
|
||
static CORE_ADDR unk_lang_trampoline (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 struct type **const (unknown_builtin_types[]) =
|
||
{
|
||
0
|
||
};
|
||
static const struct op_print unk_op_print_tab[] =
|
||
{
|
||
{NULL, OP_NULL, PREC_NULL, 0}
|
||
};
|
||
|
||
const struct language_defn unknown_language_defn =
|
||
{
|
||
"unknown",
|
||
language_unknown,
|
||
&unknown_builtin_types[0],
|
||
range_check_off,
|
||
type_check_off,
|
||
case_sensitive_on,
|
||
unk_lang_parser,
|
||
unk_lang_error,
|
||
evaluate_subexp_standard,
|
||
unk_lang_printchar, /* Print character constant */
|
||
unk_lang_printstr,
|
||
unk_lang_emit_char,
|
||
unk_lang_create_fundamental_type,
|
||
unk_lang_print_type, /* Print a type using appropriate syntax */
|
||
unk_lang_val_print, /* Print a value using appropriate syntax */
|
||
unk_lang_value_print, /* Print a top-level value */
|
||
unk_lang_trampoline, /* Language specific skip_trampoline */
|
||
value_of_this, /* value_of_this */
|
||
basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
|
||
unk_lang_demangle, /* Language specific symbol demangler */
|
||
{"", "", "", ""}, /* Binary format info */
|
||
{"0%lo", "0", "o", ""}, /* Octal format info */
|
||
{"%ld", "", "d", ""}, /* Decimal format info */
|
||
{"0x%lx", "0x", "x", ""}, /* Hex format info */
|
||
unk_op_print_tab, /* expression operators for printing */
|
||
1, /* c-style arrays */
|
||
0, /* String lower bound */
|
||
&builtin_type_char, /* Type of string elements */
|
||
LANG_MAGIC
|
||
};
|
||
|
||
/* These two structs define fake entries for the "local" and "auto" options. */
|
||
const struct language_defn auto_language_defn =
|
||
{
|
||
"auto",
|
||
language_auto,
|
||
&unknown_builtin_types[0],
|
||
range_check_off,
|
||
type_check_off,
|
||
case_sensitive_on,
|
||
unk_lang_parser,
|
||
unk_lang_error,
|
||
evaluate_subexp_standard,
|
||
unk_lang_printchar, /* Print character constant */
|
||
unk_lang_printstr,
|
||
unk_lang_emit_char,
|
||
unk_lang_create_fundamental_type,
|
||
unk_lang_print_type, /* Print a type using appropriate syntax */
|
||
unk_lang_val_print, /* Print a value using appropriate syntax */
|
||
unk_lang_value_print, /* Print a top-level value */
|
||
unk_lang_trampoline, /* Language specific skip_trampoline */
|
||
value_of_this, /* value_of_this */
|
||
basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
|
||
unk_lang_demangle, /* Language specific symbol demangler */
|
||
{"", "", "", ""}, /* Binary format info */
|
||
{"0%lo", "0", "o", ""}, /* Octal format info */
|
||
{"%ld", "", "d", ""}, /* Decimal format info */
|
||
{"0x%lx", "0x", "x", ""}, /* Hex format info */
|
||
unk_op_print_tab, /* expression operators for printing */
|
||
1, /* c-style arrays */
|
||
0, /* String lower bound */
|
||
&builtin_type_char, /* Type of string elements */
|
||
LANG_MAGIC
|
||
};
|
||
|
||
const struct language_defn local_language_defn =
|
||
{
|
||
"local",
|
||
language_auto,
|
||
&unknown_builtin_types[0],
|
||
range_check_off,
|
||
type_check_off,
|
||
case_sensitive_on,
|
||
unk_lang_parser,
|
||
unk_lang_error,
|
||
evaluate_subexp_standard,
|
||
unk_lang_printchar, /* Print character constant */
|
||
unk_lang_printstr,
|
||
unk_lang_emit_char,
|
||
unk_lang_create_fundamental_type,
|
||
unk_lang_print_type, /* Print a type using appropriate syntax */
|
||
unk_lang_val_print, /* Print a value using appropriate syntax */
|
||
unk_lang_value_print, /* Print a top-level value */
|
||
unk_lang_trampoline, /* Language specific skip_trampoline */
|
||
value_of_this, /* value_of_this */
|
||
basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
|
||
unk_lang_demangle, /* Language specific symbol demangler */
|
||
{"", "", "", ""}, /* Binary format info */
|
||
{"0%lo", "0", "o", ""}, /* Octal format info */
|
||
{"%ld", "", "d", ""}, /* Decimal format info */
|
||
{"0x%lx", "0x", "x", ""}, /* Hex format info */
|
||
unk_op_print_tab, /* expression operators for printing */
|
||
1, /* c-style arrays */
|
||
0, /* String lower bound */
|
||
&builtin_type_char, /* Type of string elements */
|
||
LANG_MAGIC
|
||
};
|
||
|
||
/* Initialize the language routines */
|
||
|
||
void
|
||
_initialize_language (void)
|
||
{
|
||
struct cmd_list_element *set, *show;
|
||
|
||
/* GDB commands for language specific stuff */
|
||
|
||
set = add_set_cmd ("language", class_support, var_string_noescape,
|
||
(char *) &language,
|
||
"Set the current source language.",
|
||
&setlist);
|
||
show = add_show_from_set (set, &showlist);
|
||
set_cmd_cfunc (set, set_language_command);
|
||
set_cmd_cfunc (show, show_language_command);
|
||
|
||
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);
|
||
|
||
set = add_set_cmd ("type", class_support, var_string_noescape,
|
||
(char *) &type,
|
||
"Set type checking. (on/warn/off/auto)",
|
||
&setchecklist);
|
||
show = add_show_from_set (set, &showchecklist);
|
||
set_cmd_cfunc (set, set_type_command);
|
||
set_cmd_cfunc (show, show_type_command);
|
||
|
||
set = add_set_cmd ("range", class_support, var_string_noescape,
|
||
(char *) &range,
|
||
"Set range checking. (on/warn/off/auto)",
|
||
&setchecklist);
|
||
show = add_show_from_set (set, &showchecklist);
|
||
set_cmd_cfunc (set, set_range_command);
|
||
set_cmd_cfunc (show, show_range_command);
|
||
|
||
set = add_set_cmd ("case-sensitive", class_support, var_string_noescape,
|
||
(char *) &case_sensitive,
|
||
"Set case sensitivity in name search. (on/off/auto)\n\
|
||
For Fortran the default is off; for other languages the default is on.",
|
||
&setlist);
|
||
show = add_show_from_set (set, &showlist);
|
||
set_cmd_cfunc (set, set_case_command);
|
||
set_cmd_cfunc (show, show_case_command);
|
||
|
||
add_language (&unknown_language_defn);
|
||
add_language (&local_language_defn);
|
||
add_language (&auto_language_defn);
|
||
|
||
language = savestring ("auto", strlen ("auto"));
|
||
type = savestring ("auto", strlen ("auto"));
|
||
range = savestring ("auto", strlen ("auto"));
|
||
case_sensitive = savestring ("auto",strlen ("auto"));
|
||
|
||
/* Have the above take effect */
|
||
set_language (language_auto);
|
||
}
|