1 /* Multiple source language support for GDB.
3 Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
4 2002, 2003, 2004, 2005, 2007, 2008, 2009 Free Software Foundation, Inc.
6 Contributed by the Department of Computer Science at the State University
7 of New York at Buffalo.
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 /* This file contains functions that return things that are specific
25 to languages. Each function should examine current_language if necessary,
26 and return the appropriate result. */
28 /* FIXME: Most of these would be better organized as macros which
29 return data out of a "language-specific" struct pointer that is set
30 whenever the working language changes. That would be a lot faster. */
34 #include "gdb_string.h"
40 #include "expression.h"
43 #include "parser-defs.h"
48 extern void _initialize_language (void);
50 static void set_case_str (void);
52 static void set_range_str (void);
54 static void set_type_str (void);
56 static void set_lang_str (void);
58 static void unk_lang_error (char *);
60 static int unk_lang_parser (void);
62 static void show_check (char *, int);
64 static void set_check (char *, int);
66 static void set_type_range_case (void);
68 static void unk_lang_emit_char (int c, struct type *type,
69 struct ui_file *stream, int quoter);
71 static void unk_lang_printchar (int c, struct type *type,
72 struct ui_file *stream);
74 static void unk_lang_print_type (struct type *, char *, struct ui_file *,
77 static int unk_lang_value_print (struct value *, struct ui_file *,
78 const struct value_print_options *);
80 static CORE_ADDR unk_lang_trampoline (struct frame_info *, CORE_ADDR pc);
82 /* Forward declaration */
83 extern const struct language_defn unknown_language_defn;
85 /* The current (default at startup) state of type and range checking.
86 (If the modes are set to "auto", though, these are changed based
87 on the default language at startup, and then again based on the
88 language of the first source file. */
90 enum range_mode range_mode = range_mode_auto;
91 enum range_check range_check = range_check_off;
92 enum type_mode type_mode = type_mode_auto;
93 enum type_check type_check = type_check_off;
94 enum case_mode case_mode = case_mode_auto;
95 enum case_sensitivity case_sensitivity = case_sensitive_on;
97 /* The current language and language_mode (see language.h) */
99 const struct language_defn *current_language = &unknown_language_defn;
100 enum language_mode language_mode = language_mode_auto;
102 /* The language that the user expects to be typing in (the language
103 of main(), or the last language we notified them about, or C). */
105 const struct language_defn *expected_language;
107 /* The list of supported languages. The list itself is malloc'd. */
109 static const struct language_defn **languages;
110 static unsigned languages_size;
111 static unsigned languages_allocsize;
112 #define DEFAULT_ALLOCSIZE 4
114 /* The "set language/type/range" commands all put stuff in these
115 buffers. This is to make them work as set/show commands. The
116 user's string is copied here, then the set_* commands look at
117 them and update them to something that looks nice when it is
120 static char *language;
123 static char *case_sensitive;
125 /* Warning issued when current_language and the language of the current
126 frame do not match. */
127 char lang_frame_mismatch_warn[] =
128 "Warning: the current language does not match this frame.";
130 /* This page contains the functions corresponding to GDB commands
131 and their helpers. */
133 /* Show command. Display a warning if the language set
134 does not match the frame. */
136 show_language_command (struct ui_file *file, int from_tty,
137 struct cmd_list_element *c, const char *value)
139 enum language flang; /* The language of the current frame */
141 deprecated_show_value_hack (file, from_tty, c, value);
142 flang = get_frame_language ();
143 if (flang != language_unknown &&
144 language_mode == language_mode_manual &&
145 current_language->la_language != flang)
146 printf_filtered ("%s\n", lang_frame_mismatch_warn);
149 /* Set command. Change the current working language. */
151 set_language_command (char *ignore, int from_tty, struct cmd_list_element *c)
157 if (!language || !language[0])
159 printf_unfiltered (_("\
160 The currently understood settings are:\n\n\
161 local or auto Automatic setting based on source file\n"));
163 for (i = 0; i < languages_size; ++i)
165 /* Already dealt with these above. */
166 if (languages[i]->la_language == language_unknown
167 || languages[i]->la_language == language_auto)
170 /* FIXME: i18n: for now assume that the human-readable name
171 is just a capitalization of the internal name. */
172 printf_unfiltered ("%-16s Use the %c%s language\n",
173 languages[i]->la_name,
174 /* Capitalize first letter of language
176 toupper (languages[i]->la_name[0]),
177 languages[i]->la_name + 1);
179 /* Restore the silly string. */
180 set_language (current_language->la_language);
184 /* Search the list of languages for a match. */
185 for (i = 0; i < languages_size; i++)
187 if (strcmp (languages[i]->la_name, language) == 0)
189 /* Found it! Go into manual mode, and use this language. */
190 if (languages[i]->la_language == language_auto)
192 /* Enter auto mode. Set to the current frame's language, if
193 known, or fallback to the initial language. */
194 language_mode = language_mode_auto;
195 flang = get_frame_language ();
196 if (flang != language_unknown)
197 set_language (flang);
199 set_initial_language ();
200 expected_language = current_language;
205 /* Enter manual mode. Set the specified language. */
206 language_mode = language_mode_manual;
207 current_language = languages[i];
208 set_type_range_case ();
210 expected_language = current_language;
216 /* Reset the language (esp. the global string "language") to the
218 err_lang = xstrdup (language);
219 make_cleanup (xfree, err_lang); /* Free it after error */
220 set_language (current_language->la_language);
221 error (_("Unknown language `%s'."), err_lang);
224 /* Show command. Display a warning if the type setting does
225 not match the current language. */
227 show_type_command (struct ui_file *file, int from_tty,
228 struct cmd_list_element *c, const char *value)
230 deprecated_show_value_hack (file, from_tty, c, value);
231 if (type_check != current_language->la_type_check)
233 "Warning: the current type check setting does not match the language.\n");
236 /* Set command. Change the setting for type checking. */
238 set_type_command (char *ignore, int from_tty, struct cmd_list_element *c)
240 if (strcmp (type, "on") == 0)
242 type_check = type_check_on;
243 type_mode = type_mode_manual;
245 else if (strcmp (type, "warn") == 0)
247 type_check = type_check_warn;
248 type_mode = type_mode_manual;
250 else if (strcmp (type, "off") == 0)
252 type_check = type_check_off;
253 type_mode = type_mode_manual;
255 else if (strcmp (type, "auto") == 0)
257 type_mode = type_mode_auto;
258 set_type_range_case ();
259 /* Avoid hitting the set_type_str call below. We
260 did it in set_type_range_case. */
265 warning (_("Unrecognized type check setting: \"%s\""), type);
268 show_type_command (NULL, from_tty, NULL, NULL);
271 /* Show command. Display a warning if the range setting does
272 not match the current language. */
274 show_range_command (struct ui_file *file, int from_tty,
275 struct cmd_list_element *c, const char *value)
277 deprecated_show_value_hack (file, from_tty, c, value);
278 if (range_check != current_language->la_range_check)
280 "Warning: the current range check setting does not match the language.\n");
283 /* Set command. Change the setting for range checking. */
285 set_range_command (char *ignore, int from_tty, struct cmd_list_element *c)
287 if (strcmp (range, "on") == 0)
289 range_check = range_check_on;
290 range_mode = range_mode_manual;
292 else if (strcmp (range, "warn") == 0)
294 range_check = range_check_warn;
295 range_mode = range_mode_manual;
297 else if (strcmp (range, "off") == 0)
299 range_check = range_check_off;
300 range_mode = range_mode_manual;
302 else if (strcmp (range, "auto") == 0)
304 range_mode = range_mode_auto;
305 set_type_range_case ();
306 /* Avoid hitting the set_range_str call below. We
307 did it in set_type_range_case. */
312 warning (_("Unrecognized range check setting: \"%s\""), range);
315 show_range_command (NULL, from_tty, NULL, NULL);
318 /* Show command. Display a warning if the case sensitivity setting does
319 not match the current language. */
321 show_case_command (struct ui_file *file, int from_tty,
322 struct cmd_list_element *c, const char *value)
324 deprecated_show_value_hack (file, from_tty, c, value);
325 if (case_sensitivity != current_language->la_case_sensitivity)
327 "Warning: the current case sensitivity setting does not match the language.\n");
330 /* Set command. Change the setting for case sensitivity. */
333 set_case_command (char *ignore, int from_tty, struct cmd_list_element *c)
335 if (strcmp (case_sensitive, "on") == 0)
337 case_sensitivity = case_sensitive_on;
338 case_mode = case_mode_manual;
340 else if (strcmp (case_sensitive, "off") == 0)
342 case_sensitivity = case_sensitive_off;
343 case_mode = case_mode_manual;
345 else if (strcmp (case_sensitive, "auto") == 0)
347 case_mode = case_mode_auto;
348 set_type_range_case ();
349 /* Avoid hitting the set_case_str call below. We did it in
350 set_type_range_case. */
355 warning (_("Unrecognized case-sensitive setting: \"%s\""),
359 show_case_command (NULL, from_tty, NULL, NULL);
362 /* Set the status of range and type checking and case sensitivity based on
363 the current modes and the current language.
364 If SHOW is non-zero, then print out the current language,
365 type and range checking status. */
367 set_type_range_case (void)
370 if (range_mode == range_mode_auto)
371 range_check = current_language->la_range_check;
373 if (type_mode == type_mode_auto)
374 type_check = current_language->la_type_check;
376 if (case_mode == case_mode_auto)
377 case_sensitivity = current_language->la_case_sensitivity;
384 /* Set current language to (enum language) LANG. Returns previous language. */
387 set_language (enum language lang)
390 enum language prev_language;
392 prev_language = current_language->la_language;
394 for (i = 0; i < languages_size; i++)
396 if (languages[i]->la_language == lang)
398 current_language = languages[i];
399 set_type_range_case ();
405 return prev_language;
408 /* This page contains functions that update the global vars
409 language, type and range. */
417 if (language_mode == language_mode_auto)
418 prefix = "auto; currently ";
420 language = concat (prefix, current_language->la_name, (char *)NULL);
426 char *tmp = NULL, *prefix = "";
430 if (type_mode == type_mode_auto)
431 prefix = "auto; currently ";
441 case type_check_warn:
445 error (_("Unrecognized type check setting."));
448 type = concat (prefix, tmp, (char *)NULL);
454 char *tmp, *pref = "";
456 if (range_mode == range_mode_auto)
457 pref = "auto; currently ";
464 case range_check_off:
467 case range_check_warn:
471 error (_("Unrecognized range check setting."));
476 range = concat (pref, tmp, (char *)NULL);
482 char *tmp = NULL, *prefix = "";
484 if (case_mode==case_mode_auto)
485 prefix = "auto; currently ";
487 switch (case_sensitivity)
489 case case_sensitive_on:
492 case case_sensitive_off:
496 error (_("Unrecognized case-sensitive setting."));
499 xfree (case_sensitive);
500 case_sensitive = concat (prefix, tmp, (char *)NULL);
503 /* Print out the current language settings: language, range and
504 type checking. If QUIETLY, print only what has changed. */
507 language_info (int quietly)
509 if (quietly && expected_language == current_language)
512 expected_language = current_language;
513 printf_unfiltered (_("Current language: %s\n"), language);
514 show_language_command (NULL, 1, NULL, NULL);
518 printf_unfiltered (_("Type checking: %s\n"), type);
519 show_type_command (NULL, 1, NULL, NULL);
520 printf_unfiltered (_("Range checking: %s\n"), range);
521 show_range_command (NULL, 1, NULL, NULL);
522 printf_unfiltered (_("Case sensitivity: %s\n"), case_sensitive);
523 show_case_command (NULL, 1, NULL, NULL);
527 /* Return the result of a binary operation. */
529 #if 0 /* Currently unused */
532 binop_result_type (struct value *v1, struct value *v2)
535 struct type *t1 = check_typedef (VALUE_TYPE (v1));
536 struct type *t2 = check_typedef (VALUE_TYPE (v2));
538 int l1 = TYPE_LENGTH (t1);
539 int l2 = TYPE_LENGTH (t2);
541 switch (current_language->la_language)
546 if (TYPE_CODE (t1) == TYPE_CODE_FLT)
547 return TYPE_CODE (t2) == TYPE_CODE_FLT && l2 > l1 ?
548 VALUE_TYPE (v2) : VALUE_TYPE (v1);
549 else if (TYPE_CODE (t2) == TYPE_CODE_FLT)
550 return TYPE_CODE (t1) == TYPE_CODE_FLT && l1 > l2 ?
551 VALUE_TYPE (v1) : VALUE_TYPE (v2);
552 else if (TYPE_UNSIGNED (t1) && l1 > l2)
553 return VALUE_TYPE (v1);
554 else if (TYPE_UNSIGNED (t2) && l2 > l1)
555 return VALUE_TYPE (v2);
556 else /* Both are signed. Result is the longer type */
557 return l1 > l2 ? VALUE_TYPE (v1) : VALUE_TYPE (v2);
560 /* If we are doing type-checking, l1 should equal l2, so this is
562 return l1 > l2 ? VALUE_TYPE (v1) : VALUE_TYPE (v2);
565 internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
566 return (struct type *) 0; /* For lint */
571 /* This page contains functions that are used in type/range checking.
572 They all return zero if the type/range check fails.
574 It is hoped that these will make extending GDB to parse different
575 languages a little easier. These are primarily used in eval.c when
576 evaluating expressions and making sure that their types are correct.
577 Instead of having a mess of conjucted/disjuncted expressions in an "if",
578 the ideas of type can be wrapped up in the following functions.
580 Note that some of them are not currently dependent upon which language
581 is currently being parsed. For example, floats are the same in
582 C and Modula-2 (ie. the only floating point type has TYPE_CODE of
583 TYPE_CODE_FLT), while booleans are different. */
585 /* Returns non-zero if its argument is a simple type. This is the same for
586 both Modula-2 and for C. In the C case, TYPE_CODE_CHAR will never occur,
587 and thus will never cause the failure of the test. */
589 simple_type (struct type *type)
591 CHECK_TYPEDEF (type);
592 switch (TYPE_CODE (type))
598 case TYPE_CODE_RANGE:
607 /* Returns non-zero if its argument is of an ordered type.
608 An ordered type is one in which the elements can be tested for the
609 properties of "greater than", "less than", etc, or for which the
610 operations "increment" or "decrement" make sense. */
612 ordered_type (struct type *type)
614 CHECK_TYPEDEF (type);
615 switch (TYPE_CODE (type))
621 case TYPE_CODE_RANGE:
629 /* Returns non-zero if the two types are the same */
631 same_type (struct type *arg1, struct type *arg2)
633 CHECK_TYPEDEF (type);
634 if (structured_type (arg1) ? !structured_type (arg2) : structured_type (arg2))
635 /* One is structured and one isn't */
637 else if (structured_type (arg1) && structured_type (arg2))
639 else if (numeric_type (arg1) && numeric_type (arg2))
640 return (TYPE_CODE (arg2) == TYPE_CODE (arg1)) &&
641 (TYPE_UNSIGNED (arg1) == TYPE_UNSIGNED (arg2))
647 /* Returns non-zero if the type is integral */
649 integral_type (struct type *type)
651 CHECK_TYPEDEF (type);
652 switch (current_language->la_language)
657 return (TYPE_CODE (type) != TYPE_CODE_INT) &&
658 (TYPE_CODE (type) != TYPE_CODE_ENUM) ? 0 : 1;
660 case language_pascal:
661 return TYPE_CODE (type) != TYPE_CODE_INT ? 0 : 1;
663 error (_("Language not supported."));
667 /* Returns non-zero if the value is numeric */
669 numeric_type (struct type *type)
671 CHECK_TYPEDEF (type);
672 switch (TYPE_CODE (type))
683 /* Returns non-zero if the value is a character type */
685 character_type (struct type *type)
687 CHECK_TYPEDEF (type);
688 switch (current_language->la_language)
691 case language_pascal:
692 return TYPE_CODE (type) != TYPE_CODE_CHAR ? 0 : 1;
697 return (TYPE_CODE (type) == TYPE_CODE_INT) &&
698 TYPE_LENGTH (type) == sizeof (char)
705 /* Returns non-zero if the value is a string type */
707 string_type (struct type *type)
709 CHECK_TYPEDEF (type);
710 switch (current_language->la_language)
713 case language_pascal:
714 return TYPE_CODE (type) != TYPE_CODE_STRING ? 0 : 1;
719 /* C does not have distinct string type. */
726 /* Returns non-zero if the value is a boolean type */
728 boolean_type (struct type *type)
730 CHECK_TYPEDEF (type);
731 if (TYPE_CODE (type) == TYPE_CODE_BOOL)
733 switch (current_language->la_language)
738 /* Might be more cleanly handled by having a
739 TYPE_CODE_INT_NOT_BOOL for (the deleted) CHILL and such
740 languages, or a TYPE_CODE_INT_OR_BOOL for C. */
741 if (TYPE_CODE (type) == TYPE_CODE_INT)
749 /* Returns non-zero if the value is a floating-point type */
751 float_type (struct type *type)
753 CHECK_TYPEDEF (type);
754 return TYPE_CODE (type) == TYPE_CODE_FLT;
757 /* Returns non-zero if the value is a pointer type */
759 pointer_type (struct type *type)
761 return TYPE_CODE (type) == TYPE_CODE_PTR ||
762 TYPE_CODE (type) == TYPE_CODE_REF;
765 /* Returns non-zero if the value is a structured type */
767 structured_type (struct type *type)
769 CHECK_TYPEDEF (type);
770 switch (current_language->la_language)
775 return (TYPE_CODE (type) == TYPE_CODE_STRUCT) ||
776 (TYPE_CODE (type) == TYPE_CODE_UNION) ||
777 (TYPE_CODE (type) == TYPE_CODE_ARRAY);
778 case language_pascal:
779 return (TYPE_CODE(type) == TYPE_CODE_STRUCT) ||
780 (TYPE_CODE(type) == TYPE_CODE_UNION) ||
781 (TYPE_CODE(type) == TYPE_CODE_SET) ||
782 (TYPE_CODE(type) == TYPE_CODE_ARRAY);
784 return (TYPE_CODE (type) == TYPE_CODE_STRUCT) ||
785 (TYPE_CODE (type) == TYPE_CODE_SET) ||
786 (TYPE_CODE (type) == TYPE_CODE_ARRAY);
793 /* This page contains functions that return info about
794 (struct value) values used in GDB. */
796 /* Returns non-zero if the value VAL represents a true value. */
798 value_true (struct value *val)
800 /* It is possible that we should have some sort of error if a non-boolean
801 value is used in this context. Possibly dependent on some kind of
802 "boolean-checking" option like range checking. But it should probably
803 not depend on the language except insofar as is necessary to identify
804 a "boolean" value (i.e. in C using a float, pointer, etc., as a boolean
805 should be an error, probably). */
806 return !value_logical_not (val);
809 /* This page contains functions for the printing out of
810 error messages that occur during type- and range-
813 /* These are called when a language fails a type- or range-check. The
814 first argument should be a printf()-style format string, and the
815 rest of the arguments should be its arguments. If
816 [type|range]_check is [type|range]_check_on, an error is printed;
817 if [type|range]_check_warn, a warning; otherwise just the
821 type_error (const char *string,...)
824 va_start (args, string);
828 case type_check_warn:
829 vwarning (string, args);
832 verror (string, args);
835 /* FIXME: cagney/2002-01-30: Should this function print anything
836 when type error is off? */
837 vfprintf_filtered (gdb_stderr, string, args);
838 fprintf_filtered (gdb_stderr, "\n");
841 internal_error (__FILE__, __LINE__, _("bad switch"));
847 range_error (const char *string,...)
850 va_start (args, string);
854 case range_check_warn:
855 vwarning (string, args);
858 verror (string, args);
860 case range_check_off:
861 /* FIXME: cagney/2002-01-30: Should this function print anything
862 when range error is off? */
863 vfprintf_filtered (gdb_stderr, string, args);
864 fprintf_filtered (gdb_stderr, "\n");
867 internal_error (__FILE__, __LINE__, _("bad switch"));
873 /* This page contains miscellaneous functions */
875 /* Return the language enum for a given language string. */
878 language_enum (char *str)
882 for (i = 0; i < languages_size; i++)
883 if (strcmp (languages[i]->la_name, str) == 0)
884 return languages[i]->la_language;
886 return language_unknown;
889 /* Return the language struct for a given language enum. */
891 const struct language_defn *
892 language_def (enum language lang)
896 for (i = 0; i < languages_size; i++)
898 if (languages[i]->la_language == lang)
906 /* Return the language as a string */
908 language_str (enum language lang)
912 for (i = 0; i < languages_size; i++)
914 if (languages[i]->la_language == lang)
916 return languages[i]->la_name;
923 set_check (char *ignore, int from_tty)
926 "\"set check\" must be followed by the name of a check subcommand.\n");
927 help_list (setchecklist, "set check ", -1, gdb_stdout);
931 show_check (char *ignore, int from_tty)
933 cmd_show_list (showchecklist, from_tty, "");
936 /* Add a language to the set of known languages. */
939 add_language (const struct language_defn *lang)
941 if (lang->la_magic != LANG_MAGIC)
943 fprintf_unfiltered (gdb_stderr, "Magic number of %s language struct wrong\n",
945 internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
950 languages_allocsize = DEFAULT_ALLOCSIZE;
951 languages = (const struct language_defn **) xmalloc
952 (languages_allocsize * sizeof (*languages));
954 if (languages_size >= languages_allocsize)
956 languages_allocsize *= 2;
957 languages = (const struct language_defn **) xrealloc ((char *) languages,
958 languages_allocsize * sizeof (*languages));
960 languages[languages_size++] = lang;
963 /* Iterate through all registered languages looking for and calling
964 any non-NULL struct language_defn.skip_trampoline() functions.
965 Return the result from the first that returns non-zero, or 0 if all
968 skip_language_trampoline (struct frame_info *frame, CORE_ADDR pc)
972 for (i = 0; i < languages_size; i++)
974 if (languages[i]->skip_trampoline)
976 CORE_ADDR real_pc = (languages[i]->skip_trampoline) (frame, pc);
985 /* Return demangled language symbol, or NULL.
986 FIXME: Options are only useful for certain languages and ignored
987 by others, so it would be better to remove them here and have a
988 more flexible demangler for the languages that need it.
989 FIXME: Sometimes the demangler is invoked when we don't know the
990 language, so we can't use this everywhere. */
992 language_demangle (const struct language_defn *current_language,
993 const char *mangled, int options)
995 if (current_language != NULL && current_language->la_demangle)
996 return current_language->la_demangle (mangled, options);
1000 /* Return class name from physname or NULL. */
1002 language_class_name_from_physname (const struct language_defn *current_language,
1003 const char *physname)
1005 if (current_language != NULL && current_language->la_class_name_from_physname)
1006 return current_language->la_class_name_from_physname (physname);
1010 /* Return non-zero if TYPE should be passed (and returned) by
1011 reference at the language level. */
1013 language_pass_by_reference (struct type *type)
1015 return current_language->la_pass_by_reference (type);
1018 /* Return zero; by default, types are passed by value at the language
1019 level. The target ABI may pass or return some structs by reference
1020 independent of this. */
1022 default_pass_by_reference (struct type *type)
1027 /* Return the default string containing the list of characters
1028 delimiting words. This is a reasonable default value that
1029 most languages should be able to use. */
1032 default_word_break_characters (void)
1034 return " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-";
1037 /* Print the index of array elements using the C99 syntax. */
1040 default_print_array_index (struct value *index_value, struct ui_file *stream,
1041 const struct value_print_options *options)
1043 fprintf_filtered (stream, "[");
1044 LA_VALUE_PRINT (index_value, stream, options);
1045 fprintf_filtered (stream, "] = ");
1049 default_get_string (struct value *value, gdb_byte **buffer, int *length,
1050 const char **charset)
1052 error (_("Getting a string is unsupported in this language."));
1055 /* Define the language that is no language. */
1058 unk_lang_parser (void)
1064 unk_lang_error (char *msg)
1066 error (_("Attempted to parse an expression with unknown language"));
1070 unk_lang_emit_char (int c, struct type *type, struct ui_file *stream,
1073 error (_("internal error - unimplemented function unk_lang_emit_char called."));
1077 unk_lang_printchar (int c, struct type *type, struct ui_file *stream)
1079 error (_("internal error - unimplemented function unk_lang_printchar called."));
1083 unk_lang_printstr (struct ui_file *stream, struct type *type,
1084 const gdb_byte *string, unsigned int length,
1086 const struct value_print_options *options)
1088 error (_("internal error - unimplemented function unk_lang_printstr called."));
1092 unk_lang_print_type (struct type *type, char *varstring, struct ui_file *stream,
1093 int show, int level)
1095 error (_("internal error - unimplemented function unk_lang_print_type called."));
1099 unk_lang_val_print (struct type *type, const gdb_byte *valaddr,
1100 int embedded_offset, CORE_ADDR address,
1101 struct ui_file *stream, int recurse,
1102 const struct value_print_options *options)
1104 error (_("internal error - unimplemented function unk_lang_val_print called."));
1108 unk_lang_value_print (struct value *val, struct ui_file *stream,
1109 const struct value_print_options *options)
1111 error (_("internal error - unimplemented function unk_lang_value_print called."));
1114 static CORE_ADDR unk_lang_trampoline (struct frame_info *frame, CORE_ADDR pc)
1119 /* Unknown languages just use the cplus demangler. */
1120 static char *unk_lang_demangle (const char *mangled, int options)
1122 return cplus_demangle (mangled, options);
1125 static char *unk_lang_class_name (const char *mangled)
1130 static const struct op_print unk_op_print_tab[] =
1132 {NULL, OP_NULL, PREC_NULL, 0}
1136 unknown_language_arch_info (struct gdbarch *gdbarch,
1137 struct language_arch_info *lai)
1139 lai->string_char_type = builtin_type (gdbarch)->builtin_char;
1140 lai->bool_type_default = builtin_type (gdbarch)->builtin_int;
1141 lai->primitive_type_vector = GDBARCH_OBSTACK_CALLOC (gdbarch, 1,
1145 const struct language_defn unknown_language_defn =
1154 &exp_descriptor_standard,
1158 unk_lang_printchar, /* Print character constant */
1161 unk_lang_print_type, /* Print a type using appropriate syntax */
1162 default_print_typedef, /* Print a typedef using appropriate syntax */
1163 unk_lang_val_print, /* Print a value using appropriate syntax */
1164 unk_lang_value_print, /* Print a top-level value */
1165 unk_lang_trampoline, /* Language specific skip_trampoline */
1166 "this", /* name_of_this */
1167 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1168 basic_lookup_transparent_type,/* lookup_transparent_type */
1169 unk_lang_demangle, /* Language specific symbol demangler */
1170 unk_lang_class_name, /* Language specific class_name_from_physname */
1171 unk_op_print_tab, /* expression operators for printing */
1172 1, /* c-style arrays */
1173 0, /* String lower bound */
1174 default_word_break_characters,
1175 default_make_symbol_completion_list,
1176 unknown_language_arch_info, /* la_language_arch_info. */
1177 default_print_array_index,
1178 default_pass_by_reference,
1183 /* These two structs define fake entries for the "local" and "auto" options. */
1184 const struct language_defn auto_language_defn =
1193 &exp_descriptor_standard,
1197 unk_lang_printchar, /* Print character constant */
1200 unk_lang_print_type, /* Print a type using appropriate syntax */
1201 default_print_typedef, /* Print a typedef using appropriate syntax */
1202 unk_lang_val_print, /* Print a value using appropriate syntax */
1203 unk_lang_value_print, /* Print a top-level value */
1204 unk_lang_trampoline, /* Language specific skip_trampoline */
1205 "this", /* name_of_this */
1206 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1207 basic_lookup_transparent_type,/* lookup_transparent_type */
1208 unk_lang_demangle, /* Language specific symbol demangler */
1209 unk_lang_class_name, /* Language specific class_name_from_physname */
1210 unk_op_print_tab, /* expression operators for printing */
1211 1, /* c-style arrays */
1212 0, /* String lower bound */
1213 default_word_break_characters,
1214 default_make_symbol_completion_list,
1215 unknown_language_arch_info, /* la_language_arch_info. */
1216 default_print_array_index,
1217 default_pass_by_reference,
1222 const struct language_defn local_language_defn =
1231 &exp_descriptor_standard,
1235 unk_lang_printchar, /* Print character constant */
1238 unk_lang_print_type, /* Print a type using appropriate syntax */
1239 default_print_typedef, /* Print a typedef using appropriate syntax */
1240 unk_lang_val_print, /* Print a value using appropriate syntax */
1241 unk_lang_value_print, /* Print a top-level value */
1242 unk_lang_trampoline, /* Language specific skip_trampoline */
1243 "this", /* name_of_this */
1244 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1245 basic_lookup_transparent_type,/* lookup_transparent_type */
1246 unk_lang_demangle, /* Language specific symbol demangler */
1247 unk_lang_class_name, /* Language specific class_name_from_physname */
1248 unk_op_print_tab, /* expression operators for printing */
1249 1, /* c-style arrays */
1250 0, /* String lower bound */
1251 default_word_break_characters,
1252 default_make_symbol_completion_list,
1253 unknown_language_arch_info, /* la_language_arch_info. */
1254 default_print_array_index,
1255 default_pass_by_reference,
1260 /* Per-architecture language information. */
1262 static struct gdbarch_data *language_gdbarch_data;
1264 struct language_gdbarch
1266 /* A vector of per-language per-architecture info. Indexed by "enum
1268 struct language_arch_info arch_info[nr_languages];
1272 language_gdbarch_post_init (struct gdbarch *gdbarch)
1274 struct language_gdbarch *l;
1277 l = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct language_gdbarch);
1278 for (i = 0; i < languages_size; i++)
1280 if (languages[i] != NULL
1281 && languages[i]->la_language_arch_info != NULL)
1282 languages[i]->la_language_arch_info
1283 (gdbarch, l->arch_info + languages[i]->la_language);
1289 language_string_char_type (const struct language_defn *la,
1290 struct gdbarch *gdbarch)
1292 struct language_gdbarch *ld = gdbarch_data (gdbarch,
1293 language_gdbarch_data);
1294 return ld->arch_info[la->la_language].string_char_type;
1298 language_bool_type (const struct language_defn *la,
1299 struct gdbarch *gdbarch)
1301 struct language_gdbarch *ld = gdbarch_data (gdbarch,
1302 language_gdbarch_data);
1304 if (ld->arch_info[la->la_language].bool_type_symbol)
1307 sym = lookup_symbol (ld->arch_info[la->la_language].bool_type_symbol,
1308 NULL, VAR_DOMAIN, NULL);
1311 struct type *type = SYMBOL_TYPE (sym);
1312 if (type && TYPE_CODE (type) == TYPE_CODE_BOOL)
1317 return ld->arch_info[la->la_language].bool_type_default;
1321 language_lookup_primitive_type_by_name (const struct language_defn *la,
1322 struct gdbarch *gdbarch,
1325 struct language_gdbarch *ld = gdbarch_data (gdbarch,
1326 language_gdbarch_data);
1327 struct type *const *p;
1328 for (p = ld->arch_info[la->la_language].primitive_type_vector;
1332 if (strcmp (TYPE_NAME (*p), name) == 0)
1338 /* Initialize the language routines */
1341 _initialize_language (void)
1343 struct cmd_list_element *set, *show;
1345 language_gdbarch_data
1346 = gdbarch_data_register_post_init (language_gdbarch_post_init);
1348 /* GDB commands for language specific stuff */
1350 /* FIXME: cagney/2005-02-20: This should be implemented using an
1352 add_setshow_string_noescape_cmd ("language", class_support, &language, _("\
1353 Set the current source language."), _("\
1354 Show the current source language."), NULL,
1355 set_language_command,
1356 show_language_command,
1357 &setlist, &showlist);
1359 add_prefix_cmd ("check", no_class, set_check,
1360 _("Set the status of the type/range checker."),
1361 &setchecklist, "set check ", 0, &setlist);
1362 add_alias_cmd ("c", "check", no_class, 1, &setlist);
1363 add_alias_cmd ("ch", "check", no_class, 1, &setlist);
1365 add_prefix_cmd ("check", no_class, show_check,
1366 _("Show the status of the type/range checker."),
1367 &showchecklist, "show check ", 0, &showlist);
1368 add_alias_cmd ("c", "check", no_class, 1, &showlist);
1369 add_alias_cmd ("ch", "check", no_class, 1, &showlist);
1371 /* FIXME: cagney/2005-02-20: This should be implemented using an
1373 add_setshow_string_noescape_cmd ("type", class_support, &type, _("\
1374 Set type checking. (on/warn/off/auto)"), _("\
1375 Show type checking. (on/warn/off/auto)"), NULL,
1378 &setchecklist, &showchecklist);
1380 /* FIXME: cagney/2005-02-20: This should be implemented using an
1382 add_setshow_string_noescape_cmd ("range", class_support, &range, _("\
1383 Set range checking. (on/warn/off/auto)"), _("\
1384 Show range checking. (on/warn/off/auto)"), NULL,
1387 &setchecklist, &showchecklist);
1389 /* FIXME: cagney/2005-02-20: This should be implemented using an
1391 add_setshow_string_noescape_cmd ("case-sensitive", class_support,
1392 &case_sensitive, _("\
1393 Set case sensitivity in name search. (on/off/auto)"), _("\
1394 Show case sensitivity in name search. (on/off/auto)"), _("\
1395 For Fortran the default is off; for other languages the default is on."),
1398 &setlist, &showlist);
1400 add_language (&unknown_language_defn);
1401 add_language (&local_language_defn);
1402 add_language (&auto_language_defn);
1404 language = xstrdup ("auto");
1405 type = xstrdup ("auto");
1406 range = xstrdup ("auto");
1407 case_sensitive = xstrdup ("auto");
1409 /* Have the above take effect */
1410 set_language (language_auto);