| 1 | /* Multiple source language support for GDB. |
| 2 | |
| 3 | Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, |
| 4 | 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011 |
| 5 | Free Software Foundation, Inc. |
| 6 | |
| 7 | Contributed by the Department of Computer Science at the State University |
| 8 | of New York at Buffalo. |
| 9 | |
| 10 | This file is part of GDB. |
| 11 | |
| 12 | This program is free software; you can redistribute it and/or modify |
| 13 | it under the terms of the GNU General Public License as published by |
| 14 | the Free Software Foundation; either version 3 of the License, or |
| 15 | (at your option) any later version. |
| 16 | |
| 17 | This program is distributed in the hope that it will be useful, |
| 18 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | GNU General Public License for more details. |
| 21 | |
| 22 | You should have received a copy of the GNU General Public License |
| 23 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 24 | |
| 25 | /* This file contains functions that return things that are specific |
| 26 | to languages. Each function should examine current_language if necessary, |
| 27 | and return the appropriate result. */ |
| 28 | |
| 29 | /* FIXME: Most of these would be better organized as macros which |
| 30 | return data out of a "language-specific" struct pointer that is set |
| 31 | whenever the working language changes. That would be a lot faster. */ |
| 32 | |
| 33 | #include "defs.h" |
| 34 | #include <ctype.h> |
| 35 | #include "gdb_string.h" |
| 36 | |
| 37 | #include "symtab.h" |
| 38 | #include "gdbtypes.h" |
| 39 | #include "value.h" |
| 40 | #include "gdbcmd.h" |
| 41 | #include "expression.h" |
| 42 | #include "language.h" |
| 43 | #include "target.h" |
| 44 | #include "parser-defs.h" |
| 45 | #include "jv-lang.h" |
| 46 | #include "demangle.h" |
| 47 | #include "symfile.h" |
| 48 | |
| 49 | extern void _initialize_language (void); |
| 50 | |
| 51 | static void unk_lang_error (char *); |
| 52 | |
| 53 | static int unk_lang_parser (void); |
| 54 | |
| 55 | static void show_check (char *, int); |
| 56 | |
| 57 | static void set_check (char *, int); |
| 58 | |
| 59 | static void set_type_range_case (void); |
| 60 | |
| 61 | static void unk_lang_emit_char (int c, struct type *type, |
| 62 | struct ui_file *stream, int quoter); |
| 63 | |
| 64 | static void unk_lang_printchar (int c, struct type *type, |
| 65 | struct ui_file *stream); |
| 66 | |
| 67 | static void unk_lang_print_type (struct type *, const char *, struct ui_file *, |
| 68 | int, int); |
| 69 | |
| 70 | static int unk_lang_value_print (struct value *, struct ui_file *, |
| 71 | const struct value_print_options *); |
| 72 | |
| 73 | static CORE_ADDR unk_lang_trampoline (struct frame_info *, CORE_ADDR pc); |
| 74 | |
| 75 | /* Forward declaration */ |
| 76 | extern const struct language_defn unknown_language_defn; |
| 77 | |
| 78 | /* The current (default at startup) state of type and range checking. |
| 79 | (If the modes are set to "auto", though, these are changed based |
| 80 | on the default language at startup, and then again based on the |
| 81 | language of the first source file. */ |
| 82 | |
| 83 | enum range_mode range_mode = range_mode_auto; |
| 84 | enum range_check range_check = range_check_off; |
| 85 | enum type_mode type_mode = type_mode_auto; |
| 86 | enum type_check type_check = type_check_off; |
| 87 | enum case_mode case_mode = case_mode_auto; |
| 88 | enum case_sensitivity case_sensitivity = case_sensitive_on; |
| 89 | |
| 90 | /* The current language and language_mode (see language.h). */ |
| 91 | |
| 92 | const struct language_defn *current_language = &unknown_language_defn; |
| 93 | enum language_mode language_mode = language_mode_auto; |
| 94 | |
| 95 | /* The language that the user expects to be typing in (the language |
| 96 | of main(), or the last language we notified them about, or C). */ |
| 97 | |
| 98 | const struct language_defn *expected_language; |
| 99 | |
| 100 | /* The list of supported languages. The list itself is malloc'd. */ |
| 101 | |
| 102 | static const struct language_defn **languages; |
| 103 | static unsigned languages_size; |
| 104 | static unsigned languages_allocsize; |
| 105 | #define DEFAULT_ALLOCSIZE 4 |
| 106 | |
| 107 | /* The current values of the "set language/type/range" enum |
| 108 | commands. */ |
| 109 | static const char *language; |
| 110 | static const char *type; |
| 111 | static const char *range; |
| 112 | static const char *case_sensitive; |
| 113 | |
| 114 | /* Warning issued when current_language and the language of the current |
| 115 | frame do not match. */ |
| 116 | char lang_frame_mismatch_warn[] = |
| 117 | "Warning: the current language does not match this frame."; |
| 118 | \f |
| 119 | /* This page contains the functions corresponding to GDB commands |
| 120 | and their helpers. */ |
| 121 | |
| 122 | /* Show command. Display a warning if the language set |
| 123 | does not match the frame. */ |
| 124 | static void |
| 125 | show_language_command (struct ui_file *file, int from_tty, |
| 126 | struct cmd_list_element *c, const char *value) |
| 127 | { |
| 128 | enum language flang; /* The language of the current frame. */ |
| 129 | |
| 130 | if (language_mode == language_mode_auto) |
| 131 | fprintf_filtered (gdb_stdout, |
| 132 | _("The current source language is " |
| 133 | "\"auto; currently %s\".\n"), |
| 134 | current_language->la_name); |
| 135 | else |
| 136 | fprintf_filtered (gdb_stdout, |
| 137 | _("The current source language is \"%s\".\n"), |
| 138 | current_language->la_name); |
| 139 | |
| 140 | flang = get_frame_language (); |
| 141 | if (flang != language_unknown && |
| 142 | language_mode == language_mode_manual && |
| 143 | current_language->la_language != flang) |
| 144 | printf_filtered ("%s\n", lang_frame_mismatch_warn); |
| 145 | } |
| 146 | |
| 147 | /* Set command. Change the current working language. */ |
| 148 | static void |
| 149 | set_language_command (char *ignore, int from_tty, struct cmd_list_element *c) |
| 150 | { |
| 151 | int i; |
| 152 | enum language flang; |
| 153 | |
| 154 | /* Search the list of languages for a match. */ |
| 155 | for (i = 0; i < languages_size; i++) |
| 156 | { |
| 157 | if (strcmp (languages[i]->la_name, language) == 0) |
| 158 | { |
| 159 | /* Found it! Go into manual mode, and use this language. */ |
| 160 | if (languages[i]->la_language == language_auto) |
| 161 | { |
| 162 | /* Enter auto mode. Set to the current frame's language, if |
| 163 | known, or fallback to the initial language. */ |
| 164 | language_mode = language_mode_auto; |
| 165 | flang = get_frame_language (); |
| 166 | if (flang != language_unknown) |
| 167 | set_language (flang); |
| 168 | else |
| 169 | set_initial_language (); |
| 170 | expected_language = current_language; |
| 171 | return; |
| 172 | } |
| 173 | else |
| 174 | { |
| 175 | /* Enter manual mode. Set the specified language. */ |
| 176 | language_mode = language_mode_manual; |
| 177 | current_language = languages[i]; |
| 178 | set_type_range_case (); |
| 179 | expected_language = current_language; |
| 180 | return; |
| 181 | } |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | internal_error (__FILE__, __LINE__, |
| 186 | "Couldn't find language `%s' in known languages list.", |
| 187 | language); |
| 188 | } |
| 189 | |
| 190 | /* Show command. Display a warning if the type setting does |
| 191 | not match the current language. */ |
| 192 | static void |
| 193 | show_type_command (struct ui_file *file, int from_tty, |
| 194 | struct cmd_list_element *c, const char *value) |
| 195 | { |
| 196 | if (type_mode == type_mode_auto) |
| 197 | { |
| 198 | char *tmp = NULL; |
| 199 | |
| 200 | switch (type_check) |
| 201 | { |
| 202 | case type_check_on: |
| 203 | tmp = "on"; |
| 204 | break; |
| 205 | case type_check_off: |
| 206 | tmp = "off"; |
| 207 | break; |
| 208 | case type_check_warn: |
| 209 | tmp = "warn"; |
| 210 | break; |
| 211 | default: |
| 212 | internal_error (__FILE__, __LINE__, |
| 213 | "Unrecognized type check setting."); |
| 214 | } |
| 215 | |
| 216 | fprintf_filtered (gdb_stdout, |
| 217 | _("Type checking is \"auto; currently %s\".\n"), |
| 218 | tmp); |
| 219 | } |
| 220 | else |
| 221 | fprintf_filtered (gdb_stdout, _("Type checking is \"%s\".\n"), |
| 222 | value); |
| 223 | |
| 224 | if (type_check != current_language->la_type_check) |
| 225 | warning (_("the current type check setting" |
| 226 | " does not match the language.\n")); |
| 227 | } |
| 228 | |
| 229 | /* Set command. Change the setting for type checking. */ |
| 230 | static void |
| 231 | set_type_command (char *ignore, int from_tty, struct cmd_list_element *c) |
| 232 | { |
| 233 | if (strcmp (type, "on") == 0) |
| 234 | { |
| 235 | type_check = type_check_on; |
| 236 | type_mode = type_mode_manual; |
| 237 | } |
| 238 | else if (strcmp (type, "warn") == 0) |
| 239 | { |
| 240 | type_check = type_check_warn; |
| 241 | type_mode = type_mode_manual; |
| 242 | } |
| 243 | else if (strcmp (type, "off") == 0) |
| 244 | { |
| 245 | type_check = type_check_off; |
| 246 | type_mode = type_mode_manual; |
| 247 | } |
| 248 | else if (strcmp (type, "auto") == 0) |
| 249 | { |
| 250 | type_mode = type_mode_auto; |
| 251 | set_type_range_case (); |
| 252 | return; |
| 253 | } |
| 254 | else |
| 255 | internal_error (__FILE__, __LINE__, |
| 256 | _("Unrecognized type check setting: \"%s\""), type); |
| 257 | |
| 258 | if (type_check != current_language->la_type_check) |
| 259 | warning (_("the current type check setting" |
| 260 | " does not match the language.\n")); |
| 261 | } |
| 262 | |
| 263 | /* Show command. Display a warning if the range setting does |
| 264 | not match the current language. */ |
| 265 | static void |
| 266 | show_range_command (struct ui_file *file, int from_tty, |
| 267 | struct cmd_list_element *c, const char *value) |
| 268 | { |
| 269 | if (range_mode == range_mode_auto) |
| 270 | { |
| 271 | char *tmp; |
| 272 | |
| 273 | switch (range_check) |
| 274 | { |
| 275 | case range_check_on: |
| 276 | tmp = "on"; |
| 277 | break; |
| 278 | case range_check_off: |
| 279 | tmp = "off"; |
| 280 | break; |
| 281 | case range_check_warn: |
| 282 | tmp = "warn"; |
| 283 | break; |
| 284 | default: |
| 285 | internal_error (__FILE__, __LINE__, |
| 286 | "Unrecognized range check setting."); |
| 287 | } |
| 288 | |
| 289 | fprintf_filtered (gdb_stdout, |
| 290 | _("Range checking is \"auto; currently %s\".\n"), |
| 291 | tmp); |
| 292 | } |
| 293 | else |
| 294 | fprintf_filtered (gdb_stdout, _("Range checking is \"%s\".\n"), |
| 295 | value); |
| 296 | |
| 297 | if (range_check != current_language->la_range_check) |
| 298 | warning (_("the current range check setting " |
| 299 | "does not match the language.\n")); |
| 300 | } |
| 301 | |
| 302 | /* Set command. Change the setting for range checking. */ |
| 303 | static void |
| 304 | set_range_command (char *ignore, int from_tty, struct cmd_list_element *c) |
| 305 | { |
| 306 | if (strcmp (range, "on") == 0) |
| 307 | { |
| 308 | range_check = range_check_on; |
| 309 | range_mode = range_mode_manual; |
| 310 | } |
| 311 | else if (strcmp (range, "warn") == 0) |
| 312 | { |
| 313 | range_check = range_check_warn; |
| 314 | range_mode = range_mode_manual; |
| 315 | } |
| 316 | else if (strcmp (range, "off") == 0) |
| 317 | { |
| 318 | range_check = range_check_off; |
| 319 | range_mode = range_mode_manual; |
| 320 | } |
| 321 | else if (strcmp (range, "auto") == 0) |
| 322 | { |
| 323 | range_mode = range_mode_auto; |
| 324 | set_type_range_case (); |
| 325 | return; |
| 326 | } |
| 327 | else |
| 328 | { |
| 329 | internal_error (__FILE__, __LINE__, |
| 330 | _("Unrecognized range check setting: \"%s\""), range); |
| 331 | } |
| 332 | if (range_check != current_language->la_range_check) |
| 333 | warning (_("the current range check setting " |
| 334 | "does not match the language.\n")); |
| 335 | } |
| 336 | |
| 337 | /* Show command. Display a warning if the case sensitivity setting does |
| 338 | not match the current language. */ |
| 339 | static void |
| 340 | show_case_command (struct ui_file *file, int from_tty, |
| 341 | struct cmd_list_element *c, const char *value) |
| 342 | { |
| 343 | if (case_mode == case_mode_auto) |
| 344 | { |
| 345 | char *tmp = NULL; |
| 346 | |
| 347 | switch (case_sensitivity) |
| 348 | { |
| 349 | case case_sensitive_on: |
| 350 | tmp = "on"; |
| 351 | break; |
| 352 | case case_sensitive_off: |
| 353 | tmp = "off"; |
| 354 | break; |
| 355 | default: |
| 356 | internal_error (__FILE__, __LINE__, |
| 357 | "Unrecognized case-sensitive setting."); |
| 358 | } |
| 359 | |
| 360 | fprintf_filtered (gdb_stdout, |
| 361 | _("Case sensitivity in " |
| 362 | "name search is \"auto; currently %s\".\n"), |
| 363 | tmp); |
| 364 | } |
| 365 | else |
| 366 | fprintf_filtered (gdb_stdout, |
| 367 | _("Case sensitivity in name search is \"%s\".\n"), |
| 368 | value); |
| 369 | |
| 370 | if (case_sensitivity != current_language->la_case_sensitivity) |
| 371 | warning (_("the current case sensitivity setting does not match " |
| 372 | "the language.\n")); |
| 373 | } |
| 374 | |
| 375 | /* Set command. Change the setting for case sensitivity. */ |
| 376 | |
| 377 | static void |
| 378 | set_case_command (char *ignore, int from_tty, struct cmd_list_element *c) |
| 379 | { |
| 380 | if (strcmp (case_sensitive, "on") == 0) |
| 381 | { |
| 382 | case_sensitivity = case_sensitive_on; |
| 383 | case_mode = case_mode_manual; |
| 384 | } |
| 385 | else if (strcmp (case_sensitive, "off") == 0) |
| 386 | { |
| 387 | case_sensitivity = case_sensitive_off; |
| 388 | case_mode = case_mode_manual; |
| 389 | } |
| 390 | else if (strcmp (case_sensitive, "auto") == 0) |
| 391 | { |
| 392 | case_mode = case_mode_auto; |
| 393 | set_type_range_case (); |
| 394 | return; |
| 395 | } |
| 396 | else |
| 397 | { |
| 398 | internal_error (__FILE__, __LINE__, |
| 399 | "Unrecognized case-sensitive setting: \"%s\"", |
| 400 | case_sensitive); |
| 401 | } |
| 402 | |
| 403 | if (case_sensitivity != current_language->la_case_sensitivity) |
| 404 | warning (_("the current case sensitivity setting does not match " |
| 405 | "the language.\n")); |
| 406 | } |
| 407 | |
| 408 | /* Set the status of range and type checking and case sensitivity based on |
| 409 | the current modes and the current language. |
| 410 | If SHOW is non-zero, then print out the current language, |
| 411 | type and range checking status. */ |
| 412 | static void |
| 413 | set_type_range_case (void) |
| 414 | { |
| 415 | if (range_mode == range_mode_auto) |
| 416 | range_check = current_language->la_range_check; |
| 417 | |
| 418 | if (type_mode == type_mode_auto) |
| 419 | type_check = current_language->la_type_check; |
| 420 | |
| 421 | if (case_mode == case_mode_auto) |
| 422 | case_sensitivity = current_language->la_case_sensitivity; |
| 423 | } |
| 424 | |
| 425 | /* Set current language to (enum language) LANG. Returns previous |
| 426 | language. */ |
| 427 | |
| 428 | enum language |
| 429 | set_language (enum language lang) |
| 430 | { |
| 431 | int i; |
| 432 | enum language prev_language; |
| 433 | |
| 434 | prev_language = current_language->la_language; |
| 435 | |
| 436 | for (i = 0; i < languages_size; i++) |
| 437 | { |
| 438 | if (languages[i]->la_language == lang) |
| 439 | { |
| 440 | current_language = languages[i]; |
| 441 | set_type_range_case (); |
| 442 | break; |
| 443 | } |
| 444 | } |
| 445 | |
| 446 | return prev_language; |
| 447 | } |
| 448 | \f |
| 449 | |
| 450 | /* Print out the current language settings: language, range and |
| 451 | type checking. If QUIETLY, print only what has changed. */ |
| 452 | |
| 453 | void |
| 454 | language_info (int quietly) |
| 455 | { |
| 456 | if (quietly && expected_language == current_language) |
| 457 | return; |
| 458 | |
| 459 | expected_language = current_language; |
| 460 | printf_unfiltered (_("Current language: %s\n"), language); |
| 461 | show_language_command (NULL, 1, NULL, NULL); |
| 462 | |
| 463 | if (!quietly) |
| 464 | { |
| 465 | printf_unfiltered (_("Type checking: %s\n"), type); |
| 466 | show_type_command (NULL, 1, NULL, NULL); |
| 467 | printf_unfiltered (_("Range checking: %s\n"), range); |
| 468 | show_range_command (NULL, 1, NULL, NULL); |
| 469 | printf_unfiltered (_("Case sensitivity: %s\n"), case_sensitive); |
| 470 | show_case_command (NULL, 1, NULL, NULL); |
| 471 | } |
| 472 | } |
| 473 | \f |
| 474 | /* Return the result of a binary operation. */ |
| 475 | |
| 476 | #if 0 /* Currently unused */ |
| 477 | |
| 478 | struct type * |
| 479 | binop_result_type (struct value *v1, struct value *v2) |
| 480 | { |
| 481 | int size, uns; |
| 482 | struct type *t1 = check_typedef (VALUE_TYPE (v1)); |
| 483 | struct type *t2 = check_typedef (VALUE_TYPE (v2)); |
| 484 | |
| 485 | int l1 = TYPE_LENGTH (t1); |
| 486 | int l2 = TYPE_LENGTH (t2); |
| 487 | |
| 488 | switch (current_language->la_language) |
| 489 | { |
| 490 | case language_c: |
| 491 | case language_cplus: |
| 492 | case language_d: |
| 493 | case language_objc: |
| 494 | if (TYPE_CODE (t1) == TYPE_CODE_FLT) |
| 495 | return TYPE_CODE (t2) == TYPE_CODE_FLT && l2 > l1 ? |
| 496 | VALUE_TYPE (v2) : VALUE_TYPE (v1); |
| 497 | else if (TYPE_CODE (t2) == TYPE_CODE_FLT) |
| 498 | return TYPE_CODE (t1) == TYPE_CODE_FLT && l1 > l2 ? |
| 499 | VALUE_TYPE (v1) : VALUE_TYPE (v2); |
| 500 | else if (TYPE_UNSIGNED (t1) && l1 > l2) |
| 501 | return VALUE_TYPE (v1); |
| 502 | else if (TYPE_UNSIGNED (t2) && l2 > l1) |
| 503 | return VALUE_TYPE (v2); |
| 504 | else /* Both are signed. Result is the |
| 505 | longer type. */ |
| 506 | return l1 > l2 ? VALUE_TYPE (v1) : VALUE_TYPE (v2); |
| 507 | break; |
| 508 | case language_m2: |
| 509 | /* If we are doing type-checking, l1 should equal l2, so this is |
| 510 | not needed. */ |
| 511 | return l1 > l2 ? VALUE_TYPE (v1) : VALUE_TYPE (v2); |
| 512 | break; |
| 513 | } |
| 514 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
| 515 | return (struct type *) 0; /* For lint */ |
| 516 | } |
| 517 | |
| 518 | #endif /* 0 */ |
| 519 | #if 0 |
| 520 | /* This page contains functions that are used in type/range checking. |
| 521 | They all return zero if the type/range check fails. |
| 522 | |
| 523 | It is hoped that these will make extending GDB to parse different |
| 524 | languages a little easier. These are primarily used in eval.c when |
| 525 | evaluating expressions and making sure that their types are correct. |
| 526 | Instead of having a mess of conjucted/disjuncted expressions in an "if", |
| 527 | the ideas of type can be wrapped up in the following functions. |
| 528 | |
| 529 | Note that some of them are not currently dependent upon which language |
| 530 | is currently being parsed. For example, floats are the same in |
| 531 | C and Modula-2 (ie. the only floating point type has TYPE_CODE of |
| 532 | TYPE_CODE_FLT), while booleans are different. */ |
| 533 | |
| 534 | /* Returns non-zero if its argument is a simple type. This is the same for |
| 535 | both Modula-2 and for C. In the C case, TYPE_CODE_CHAR will never occur, |
| 536 | and thus will never cause the failure of the test. */ |
| 537 | int |
| 538 | simple_type (struct type *type) |
| 539 | { |
| 540 | CHECK_TYPEDEF (type); |
| 541 | switch (TYPE_CODE (type)) |
| 542 | { |
| 543 | case TYPE_CODE_INT: |
| 544 | case TYPE_CODE_CHAR: |
| 545 | case TYPE_CODE_ENUM: |
| 546 | case TYPE_CODE_FLT: |
| 547 | case TYPE_CODE_RANGE: |
| 548 | case TYPE_CODE_BOOL: |
| 549 | return 1; |
| 550 | |
| 551 | default: |
| 552 | return 0; |
| 553 | } |
| 554 | } |
| 555 | |
| 556 | /* Returns non-zero if its argument is of an ordered type. |
| 557 | An ordered type is one in which the elements can be tested for the |
| 558 | properties of "greater than", "less than", etc, or for which the |
| 559 | operations "increment" or "decrement" make sense. */ |
| 560 | int |
| 561 | ordered_type (struct type *type) |
| 562 | { |
| 563 | CHECK_TYPEDEF (type); |
| 564 | switch (TYPE_CODE (type)) |
| 565 | { |
| 566 | case TYPE_CODE_INT: |
| 567 | case TYPE_CODE_CHAR: |
| 568 | case TYPE_CODE_ENUM: |
| 569 | case TYPE_CODE_FLT: |
| 570 | case TYPE_CODE_RANGE: |
| 571 | return 1; |
| 572 | |
| 573 | default: |
| 574 | return 0; |
| 575 | } |
| 576 | } |
| 577 | |
| 578 | /* Returns non-zero if the two types are the same. */ |
| 579 | int |
| 580 | same_type (struct type *arg1, struct type *arg2) |
| 581 | { |
| 582 | CHECK_TYPEDEF (type); |
| 583 | if (structured_type (arg1) |
| 584 | ? !structured_type (arg2) : structured_type (arg2)) |
| 585 | /* One is structured and one isn't. */ |
| 586 | return 0; |
| 587 | else if (structured_type (arg1) && structured_type (arg2)) |
| 588 | return arg1 == arg2; |
| 589 | else if (numeric_type (arg1) && numeric_type (arg2)) |
| 590 | return (TYPE_CODE (arg2) == TYPE_CODE (arg1)) && |
| 591 | (TYPE_UNSIGNED (arg1) == TYPE_UNSIGNED (arg2)) |
| 592 | ? 1 : 0; |
| 593 | else |
| 594 | return arg1 == arg2; |
| 595 | } |
| 596 | |
| 597 | /* Returns non-zero if the type is integral. */ |
| 598 | int |
| 599 | integral_type (struct type *type) |
| 600 | { |
| 601 | CHECK_TYPEDEF (type); |
| 602 | switch (current_language->la_language) |
| 603 | { |
| 604 | case language_c: |
| 605 | case language_cplus: |
| 606 | case language_d: |
| 607 | case language_objc: |
| 608 | return (TYPE_CODE (type) != TYPE_CODE_INT) && |
| 609 | (TYPE_CODE (type) != TYPE_CODE_ENUM) ? 0 : 1; |
| 610 | case language_m2: |
| 611 | case language_pascal: |
| 612 | return TYPE_CODE (type) != TYPE_CODE_INT ? 0 : 1; |
| 613 | default: |
| 614 | error (_("Language not supported.")); |
| 615 | } |
| 616 | } |
| 617 | |
| 618 | /* Returns non-zero if the value is numeric. */ |
| 619 | int |
| 620 | numeric_type (struct type *type) |
| 621 | { |
| 622 | CHECK_TYPEDEF (type); |
| 623 | switch (TYPE_CODE (type)) |
| 624 | { |
| 625 | case TYPE_CODE_INT: |
| 626 | case TYPE_CODE_FLT: |
| 627 | return 1; |
| 628 | |
| 629 | default: |
| 630 | return 0; |
| 631 | } |
| 632 | } |
| 633 | |
| 634 | /* Returns non-zero if the value is a character type. */ |
| 635 | int |
| 636 | character_type (struct type *type) |
| 637 | { |
| 638 | CHECK_TYPEDEF (type); |
| 639 | switch (current_language->la_language) |
| 640 | { |
| 641 | case language_m2: |
| 642 | case language_pascal: |
| 643 | return TYPE_CODE (type) != TYPE_CODE_CHAR ? 0 : 1; |
| 644 | |
| 645 | case language_c: |
| 646 | case language_cplus: |
| 647 | case language_d: |
| 648 | case language_objc: |
| 649 | return (TYPE_CODE (type) == TYPE_CODE_INT) && |
| 650 | TYPE_LENGTH (type) == sizeof (char) |
| 651 | ? 1 : 0; |
| 652 | default: |
| 653 | return (0); |
| 654 | } |
| 655 | } |
| 656 | |
| 657 | /* Returns non-zero if the value is a string type. */ |
| 658 | int |
| 659 | string_type (struct type *type) |
| 660 | { |
| 661 | CHECK_TYPEDEF (type); |
| 662 | switch (current_language->la_language) |
| 663 | { |
| 664 | case language_m2: |
| 665 | case language_pascal: |
| 666 | return TYPE_CODE (type) != TYPE_CODE_STRING ? 0 : 1; |
| 667 | |
| 668 | case language_c: |
| 669 | case language_cplus: |
| 670 | case language_d: |
| 671 | case language_objc: |
| 672 | /* C does not have distinct string type. */ |
| 673 | return (0); |
| 674 | default: |
| 675 | return (0); |
| 676 | } |
| 677 | } |
| 678 | |
| 679 | /* Returns non-zero if the value is a boolean type. */ |
| 680 | int |
| 681 | boolean_type (struct type *type) |
| 682 | { |
| 683 | CHECK_TYPEDEF (type); |
| 684 | if (TYPE_CODE (type) == TYPE_CODE_BOOL) |
| 685 | return 1; |
| 686 | switch (current_language->la_language) |
| 687 | { |
| 688 | case language_c: |
| 689 | case language_cplus: |
| 690 | case language_d: |
| 691 | case language_objc: |
| 692 | /* Might be more cleanly handled by having a |
| 693 | TYPE_CODE_INT_NOT_BOOL for (the deleted) CHILL and such |
| 694 | languages, or a TYPE_CODE_INT_OR_BOOL for C. */ |
| 695 | if (TYPE_CODE (type) == TYPE_CODE_INT) |
| 696 | return 1; |
| 697 | default: |
| 698 | break; |
| 699 | } |
| 700 | return 0; |
| 701 | } |
| 702 | |
| 703 | /* Returns non-zero if the value is a floating-point type. */ |
| 704 | int |
| 705 | float_type (struct type *type) |
| 706 | { |
| 707 | CHECK_TYPEDEF (type); |
| 708 | return TYPE_CODE (type) == TYPE_CODE_FLT; |
| 709 | } |
| 710 | #endif |
| 711 | |
| 712 | /* Returns non-zero if the value is a pointer type. */ |
| 713 | int |
| 714 | pointer_type (struct type *type) |
| 715 | { |
| 716 | return TYPE_CODE (type) == TYPE_CODE_PTR || |
| 717 | TYPE_CODE (type) == TYPE_CODE_REF; |
| 718 | } |
| 719 | |
| 720 | #if 0 |
| 721 | /* Returns non-zero if the value is a structured type. */ |
| 722 | int |
| 723 | structured_type (struct type *type) |
| 724 | { |
| 725 | CHECK_TYPEDEF (type); |
| 726 | switch (current_language->la_language) |
| 727 | { |
| 728 | case language_c: |
| 729 | case language_cplus: |
| 730 | case language_d: |
| 731 | case language_objc: |
| 732 | return (TYPE_CODE (type) == TYPE_CODE_STRUCT) || |
| 733 | (TYPE_CODE (type) == TYPE_CODE_UNION) || |
| 734 | (TYPE_CODE (type) == TYPE_CODE_ARRAY); |
| 735 | case language_pascal: |
| 736 | return (TYPE_CODE(type) == TYPE_CODE_STRUCT) || |
| 737 | (TYPE_CODE(type) == TYPE_CODE_UNION) || |
| 738 | (TYPE_CODE(type) == TYPE_CODE_SET) || |
| 739 | (TYPE_CODE(type) == TYPE_CODE_ARRAY); |
| 740 | case language_m2: |
| 741 | return (TYPE_CODE (type) == TYPE_CODE_STRUCT) || |
| 742 | (TYPE_CODE (type) == TYPE_CODE_SET) || |
| 743 | (TYPE_CODE (type) == TYPE_CODE_ARRAY); |
| 744 | default: |
| 745 | return (0); |
| 746 | } |
| 747 | } |
| 748 | #endif |
| 749 | \f |
| 750 | /* This page contains functions that return info about |
| 751 | (struct value) values used in GDB. */ |
| 752 | |
| 753 | /* Returns non-zero if the value VAL represents a true value. */ |
| 754 | int |
| 755 | value_true (struct value *val) |
| 756 | { |
| 757 | /* It is possible that we should have some sort of error if a non-boolean |
| 758 | value is used in this context. Possibly dependent on some kind of |
| 759 | "boolean-checking" option like range checking. But it should probably |
| 760 | not depend on the language except insofar as is necessary to identify |
| 761 | a "boolean" value (i.e. in C using a float, pointer, etc., as a boolean |
| 762 | should be an error, probably). */ |
| 763 | return !value_logical_not (val); |
| 764 | } |
| 765 | \f |
| 766 | /* This page contains functions for the printing out of |
| 767 | error messages that occur during type- and range- |
| 768 | checking. */ |
| 769 | |
| 770 | /* These are called when a language fails a type- or range-check. The |
| 771 | first argument should be a printf()-style format string, and the |
| 772 | rest of the arguments should be its arguments. If |
| 773 | [type|range]_check is [type|range]_check_on, an error is printed; |
| 774 | if [type|range]_check_warn, a warning; otherwise just the |
| 775 | message. */ |
| 776 | |
| 777 | void |
| 778 | type_error (const char *string,...) |
| 779 | { |
| 780 | va_list args; |
| 781 | |
| 782 | va_start (args, string); |
| 783 | switch (type_check) |
| 784 | { |
| 785 | case type_check_warn: |
| 786 | vwarning (string, args); |
| 787 | break; |
| 788 | case type_check_on: |
| 789 | verror (string, args); |
| 790 | break; |
| 791 | case type_check_off: |
| 792 | /* FIXME: cagney/2002-01-30: Should this function print anything |
| 793 | when type error is off? */ |
| 794 | vfprintf_filtered (gdb_stderr, string, args); |
| 795 | fprintf_filtered (gdb_stderr, "\n"); |
| 796 | break; |
| 797 | default: |
| 798 | internal_error (__FILE__, __LINE__, _("bad switch")); |
| 799 | } |
| 800 | va_end (args); |
| 801 | } |
| 802 | |
| 803 | void |
| 804 | range_error (const char *string,...) |
| 805 | { |
| 806 | va_list args; |
| 807 | |
| 808 | va_start (args, string); |
| 809 | switch (range_check) |
| 810 | { |
| 811 | case range_check_warn: |
| 812 | vwarning (string, args); |
| 813 | break; |
| 814 | case range_check_on: |
| 815 | verror (string, args); |
| 816 | break; |
| 817 | case range_check_off: |
| 818 | /* FIXME: cagney/2002-01-30: Should this function print anything |
| 819 | when range error is off? */ |
| 820 | vfprintf_filtered (gdb_stderr, string, args); |
| 821 | fprintf_filtered (gdb_stderr, "\n"); |
| 822 | break; |
| 823 | default: |
| 824 | internal_error (__FILE__, __LINE__, _("bad switch")); |
| 825 | } |
| 826 | va_end (args); |
| 827 | } |
| 828 | \f |
| 829 | |
| 830 | /* This page contains miscellaneous functions. */ |
| 831 | |
| 832 | /* Return the language enum for a given language string. */ |
| 833 | |
| 834 | enum language |
| 835 | language_enum (char *str) |
| 836 | { |
| 837 | int i; |
| 838 | |
| 839 | for (i = 0; i < languages_size; i++) |
| 840 | if (strcmp (languages[i]->la_name, str) == 0) |
| 841 | return languages[i]->la_language; |
| 842 | |
| 843 | return language_unknown; |
| 844 | } |
| 845 | |
| 846 | /* Return the language struct for a given language enum. */ |
| 847 | |
| 848 | const struct language_defn * |
| 849 | language_def (enum language lang) |
| 850 | { |
| 851 | int i; |
| 852 | |
| 853 | for (i = 0; i < languages_size; i++) |
| 854 | { |
| 855 | if (languages[i]->la_language == lang) |
| 856 | { |
| 857 | return languages[i]; |
| 858 | } |
| 859 | } |
| 860 | return NULL; |
| 861 | } |
| 862 | |
| 863 | /* Return the language as a string. */ |
| 864 | char * |
| 865 | language_str (enum language lang) |
| 866 | { |
| 867 | int i; |
| 868 | |
| 869 | for (i = 0; i < languages_size; i++) |
| 870 | { |
| 871 | if (languages[i]->la_language == lang) |
| 872 | { |
| 873 | return languages[i]->la_name; |
| 874 | } |
| 875 | } |
| 876 | return "Unknown"; |
| 877 | } |
| 878 | |
| 879 | static void |
| 880 | set_check (char *ignore, int from_tty) |
| 881 | { |
| 882 | printf_unfiltered ( |
| 883 | "\"set check\" must be followed by the name of a check subcommand.\n"); |
| 884 | help_list (setchecklist, "set check ", -1, gdb_stdout); |
| 885 | } |
| 886 | |
| 887 | static void |
| 888 | show_check (char *ignore, int from_tty) |
| 889 | { |
| 890 | cmd_show_list (showchecklist, from_tty, ""); |
| 891 | } |
| 892 | \f |
| 893 | /* Add a language to the set of known languages. */ |
| 894 | |
| 895 | void |
| 896 | add_language (const struct language_defn *lang) |
| 897 | { |
| 898 | /* For the "set language" command. */ |
| 899 | static char **language_names = NULL; |
| 900 | /* For the "help set language" command. */ |
| 901 | char *language_set_doc = NULL; |
| 902 | |
| 903 | int i; |
| 904 | struct ui_file *tmp_stream; |
| 905 | |
| 906 | if (lang->la_magic != LANG_MAGIC) |
| 907 | { |
| 908 | fprintf_unfiltered (gdb_stderr, |
| 909 | "Magic number of %s language struct wrong\n", |
| 910 | lang->la_name); |
| 911 | internal_error (__FILE__, __LINE__, |
| 912 | _("failed internal consistency check")); |
| 913 | } |
| 914 | |
| 915 | if (!languages) |
| 916 | { |
| 917 | languages_allocsize = DEFAULT_ALLOCSIZE; |
| 918 | languages = (const struct language_defn **) xmalloc |
| 919 | (languages_allocsize * sizeof (*languages)); |
| 920 | } |
| 921 | if (languages_size >= languages_allocsize) |
| 922 | { |
| 923 | languages_allocsize *= 2; |
| 924 | languages = (const struct language_defn **) xrealloc ((char *) languages, |
| 925 | languages_allocsize * sizeof (*languages)); |
| 926 | } |
| 927 | languages[languages_size++] = lang; |
| 928 | |
| 929 | /* Build the language names array, to be used as enumeration in the |
| 930 | set language" enum command. */ |
| 931 | language_names = xrealloc (language_names, |
| 932 | (languages_size + 1) * sizeof (const char *)); |
| 933 | for (i = 0; i < languages_size; ++i) |
| 934 | language_names[i] = languages[i]->la_name; |
| 935 | language_names[i] = NULL; |
| 936 | |
| 937 | /* Build the "help set language" docs. */ |
| 938 | tmp_stream = mem_fileopen (); |
| 939 | |
| 940 | fprintf_unfiltered (tmp_stream, |
| 941 | _("Set the current source language.\n" |
| 942 | "The currently understood settings are:\n\nlocal or " |
| 943 | "auto Automatic setting based on source file\n")); |
| 944 | |
| 945 | for (i = 0; i < languages_size; ++i) |
| 946 | { |
| 947 | /* Already dealt with these above. */ |
| 948 | if (languages[i]->la_language == language_unknown |
| 949 | || languages[i]->la_language == language_auto) |
| 950 | continue; |
| 951 | |
| 952 | /* FIXME: i18n: for now assume that the human-readable name |
| 953 | is just a capitalization of the internal name. */ |
| 954 | fprintf_unfiltered (tmp_stream, "%-16s Use the %c%s language\n", |
| 955 | languages[i]->la_name, |
| 956 | /* Capitalize first letter of language |
| 957 | name. */ |
| 958 | toupper (languages[i]->la_name[0]), |
| 959 | languages[i]->la_name + 1); |
| 960 | } |
| 961 | |
| 962 | language_set_doc = ui_file_xstrdup (tmp_stream, NULL); |
| 963 | ui_file_delete (tmp_stream); |
| 964 | |
| 965 | add_setshow_enum_cmd ("language", class_support, |
| 966 | (const char **) language_names, |
| 967 | &language, |
| 968 | language_set_doc, |
| 969 | _("Show the current source language."), |
| 970 | NULL, set_language_command, |
| 971 | show_language_command, |
| 972 | &setlist, &showlist); |
| 973 | |
| 974 | xfree (language_set_doc); |
| 975 | } |
| 976 | |
| 977 | /* Iterate through all registered languages looking for and calling |
| 978 | any non-NULL struct language_defn.skip_trampoline() functions. |
| 979 | Return the result from the first that returns non-zero, or 0 if all |
| 980 | `fail'. */ |
| 981 | CORE_ADDR |
| 982 | skip_language_trampoline (struct frame_info *frame, CORE_ADDR pc) |
| 983 | { |
| 984 | int i; |
| 985 | |
| 986 | for (i = 0; i < languages_size; i++) |
| 987 | { |
| 988 | if (languages[i]->skip_trampoline) |
| 989 | { |
| 990 | CORE_ADDR real_pc = (languages[i]->skip_trampoline) (frame, pc); |
| 991 | |
| 992 | if (real_pc) |
| 993 | return real_pc; |
| 994 | } |
| 995 | } |
| 996 | |
| 997 | return 0; |
| 998 | } |
| 999 | |
| 1000 | /* Return demangled language symbol, or NULL. |
| 1001 | FIXME: Options are only useful for certain languages and ignored |
| 1002 | by others, so it would be better to remove them here and have a |
| 1003 | more flexible demangler for the languages that need it. |
| 1004 | FIXME: Sometimes the demangler is invoked when we don't know the |
| 1005 | language, so we can't use this everywhere. */ |
| 1006 | char * |
| 1007 | language_demangle (const struct language_defn *current_language, |
| 1008 | const char *mangled, int options) |
| 1009 | { |
| 1010 | if (current_language != NULL && current_language->la_demangle) |
| 1011 | return current_language->la_demangle (mangled, options); |
| 1012 | return NULL; |
| 1013 | } |
| 1014 | |
| 1015 | /* Return class name from physname or NULL. */ |
| 1016 | char * |
| 1017 | language_class_name_from_physname (const struct language_defn *curr_language, |
| 1018 | const char *physname) |
| 1019 | { |
| 1020 | if (current_language != NULL |
| 1021 | && current_language->la_class_name_from_physname) |
| 1022 | return current_language->la_class_name_from_physname (physname); |
| 1023 | return NULL; |
| 1024 | } |
| 1025 | |
| 1026 | /* Return non-zero if TYPE should be passed (and returned) by |
| 1027 | reference at the language level. */ |
| 1028 | int |
| 1029 | language_pass_by_reference (struct type *type) |
| 1030 | { |
| 1031 | return current_language->la_pass_by_reference (type); |
| 1032 | } |
| 1033 | |
| 1034 | /* Return zero; by default, types are passed by value at the language |
| 1035 | level. The target ABI may pass or return some structs by reference |
| 1036 | independent of this. */ |
| 1037 | int |
| 1038 | default_pass_by_reference (struct type *type) |
| 1039 | { |
| 1040 | return 0; |
| 1041 | } |
| 1042 | |
| 1043 | /* Return the default string containing the list of characters |
| 1044 | delimiting words. This is a reasonable default value that |
| 1045 | most languages should be able to use. */ |
| 1046 | |
| 1047 | char * |
| 1048 | default_word_break_characters (void) |
| 1049 | { |
| 1050 | return " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-"; |
| 1051 | } |
| 1052 | |
| 1053 | /* Print the index of array elements using the C99 syntax. */ |
| 1054 | |
| 1055 | void |
| 1056 | default_print_array_index (struct value *index_value, struct ui_file *stream, |
| 1057 | const struct value_print_options *options) |
| 1058 | { |
| 1059 | fprintf_filtered (stream, "["); |
| 1060 | LA_VALUE_PRINT (index_value, stream, options); |
| 1061 | fprintf_filtered (stream, "] = "); |
| 1062 | } |
| 1063 | |
| 1064 | void |
| 1065 | default_get_string (struct value *value, gdb_byte **buffer, int *length, |
| 1066 | struct type **char_type, const char **charset) |
| 1067 | { |
| 1068 | error (_("Getting a string is unsupported in this language.")); |
| 1069 | } |
| 1070 | |
| 1071 | /* Define the language that is no language. */ |
| 1072 | |
| 1073 | static int |
| 1074 | unk_lang_parser (void) |
| 1075 | { |
| 1076 | return 1; |
| 1077 | } |
| 1078 | |
| 1079 | static void |
| 1080 | unk_lang_error (char *msg) |
| 1081 | { |
| 1082 | error (_("Attempted to parse an expression with unknown language")); |
| 1083 | } |
| 1084 | |
| 1085 | static void |
| 1086 | unk_lang_emit_char (int c, struct type *type, struct ui_file *stream, |
| 1087 | int quoter) |
| 1088 | { |
| 1089 | error (_("internal error - unimplemented " |
| 1090 | "function unk_lang_emit_char called.")); |
| 1091 | } |
| 1092 | |
| 1093 | static void |
| 1094 | unk_lang_printchar (int c, struct type *type, struct ui_file *stream) |
| 1095 | { |
| 1096 | error (_("internal error - unimplemented " |
| 1097 | "function unk_lang_printchar called.")); |
| 1098 | } |
| 1099 | |
| 1100 | static void |
| 1101 | unk_lang_printstr (struct ui_file *stream, struct type *type, |
| 1102 | const gdb_byte *string, unsigned int length, |
| 1103 | const char *encoding, int force_ellipses, |
| 1104 | const struct value_print_options *options) |
| 1105 | { |
| 1106 | error (_("internal error - unimplemented " |
| 1107 | "function unk_lang_printstr called.")); |
| 1108 | } |
| 1109 | |
| 1110 | static void |
| 1111 | unk_lang_print_type (struct type *type, const char *varstring, |
| 1112 | struct ui_file *stream, int show, int level) |
| 1113 | { |
| 1114 | error (_("internal error - unimplemented " |
| 1115 | "function unk_lang_print_type called.")); |
| 1116 | } |
| 1117 | |
| 1118 | static int |
| 1119 | unk_lang_val_print (struct type *type, const gdb_byte *valaddr, |
| 1120 | int embedded_offset, CORE_ADDR address, |
| 1121 | struct ui_file *stream, int recurse, |
| 1122 | const struct value *val, |
| 1123 | const struct value_print_options *options) |
| 1124 | { |
| 1125 | error (_("internal error - unimplemented " |
| 1126 | "function unk_lang_val_print called.")); |
| 1127 | } |
| 1128 | |
| 1129 | static int |
| 1130 | unk_lang_value_print (struct value *val, struct ui_file *stream, |
| 1131 | const struct value_print_options *options) |
| 1132 | { |
| 1133 | error (_("internal error - unimplemented " |
| 1134 | "function unk_lang_value_print called.")); |
| 1135 | } |
| 1136 | |
| 1137 | static CORE_ADDR unk_lang_trampoline (struct frame_info *frame, CORE_ADDR pc) |
| 1138 | { |
| 1139 | return 0; |
| 1140 | } |
| 1141 | |
| 1142 | /* Unknown languages just use the cplus demangler. */ |
| 1143 | static char *unk_lang_demangle (const char *mangled, int options) |
| 1144 | { |
| 1145 | return cplus_demangle (mangled, options); |
| 1146 | } |
| 1147 | |
| 1148 | static char *unk_lang_class_name (const char *mangled) |
| 1149 | { |
| 1150 | return NULL; |
| 1151 | } |
| 1152 | |
| 1153 | static const struct op_print unk_op_print_tab[] = |
| 1154 | { |
| 1155 | {NULL, OP_NULL, PREC_NULL, 0} |
| 1156 | }; |
| 1157 | |
| 1158 | static void |
| 1159 | unknown_language_arch_info (struct gdbarch *gdbarch, |
| 1160 | struct language_arch_info *lai) |
| 1161 | { |
| 1162 | lai->string_char_type = builtin_type (gdbarch)->builtin_char; |
| 1163 | lai->bool_type_default = builtin_type (gdbarch)->builtin_int; |
| 1164 | lai->primitive_type_vector = GDBARCH_OBSTACK_CALLOC (gdbarch, 1, |
| 1165 | struct type *); |
| 1166 | } |
| 1167 | |
| 1168 | const struct language_defn unknown_language_defn = |
| 1169 | { |
| 1170 | "unknown", |
| 1171 | language_unknown, |
| 1172 | range_check_off, |
| 1173 | type_check_off, |
| 1174 | case_sensitive_on, |
| 1175 | array_row_major, |
| 1176 | macro_expansion_no, |
| 1177 | &exp_descriptor_standard, |
| 1178 | unk_lang_parser, |
| 1179 | unk_lang_error, |
| 1180 | null_post_parser, |
| 1181 | unk_lang_printchar, /* Print character constant */ |
| 1182 | unk_lang_printstr, |
| 1183 | unk_lang_emit_char, |
| 1184 | unk_lang_print_type, /* Print a type using appropriate syntax */ |
| 1185 | default_print_typedef, /* Print a typedef using appropriate syntax */ |
| 1186 | unk_lang_val_print, /* Print a value using appropriate syntax */ |
| 1187 | unk_lang_value_print, /* Print a top-level value */ |
| 1188 | unk_lang_trampoline, /* Language specific skip_trampoline */ |
| 1189 | "this", /* name_of_this */ |
| 1190 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 1191 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
| 1192 | unk_lang_demangle, /* Language specific symbol demangler */ |
| 1193 | unk_lang_class_name, /* Language specific |
| 1194 | class_name_from_physname */ |
| 1195 | unk_op_print_tab, /* expression operators for printing */ |
| 1196 | 1, /* c-style arrays */ |
| 1197 | 0, /* String lower bound */ |
| 1198 | default_word_break_characters, |
| 1199 | default_make_symbol_completion_list, |
| 1200 | unknown_language_arch_info, /* la_language_arch_info. */ |
| 1201 | default_print_array_index, |
| 1202 | default_pass_by_reference, |
| 1203 | default_get_string, |
| 1204 | LANG_MAGIC |
| 1205 | }; |
| 1206 | |
| 1207 | /* These two structs define fake entries for the "local" and "auto" |
| 1208 | options. */ |
| 1209 | const struct language_defn auto_language_defn = |
| 1210 | { |
| 1211 | "auto", |
| 1212 | language_auto, |
| 1213 | range_check_off, |
| 1214 | type_check_off, |
| 1215 | case_sensitive_on, |
| 1216 | array_row_major, |
| 1217 | macro_expansion_no, |
| 1218 | &exp_descriptor_standard, |
| 1219 | unk_lang_parser, |
| 1220 | unk_lang_error, |
| 1221 | null_post_parser, |
| 1222 | unk_lang_printchar, /* Print character constant */ |
| 1223 | unk_lang_printstr, |
| 1224 | unk_lang_emit_char, |
| 1225 | unk_lang_print_type, /* Print a type using appropriate syntax */ |
| 1226 | default_print_typedef, /* Print a typedef using appropriate syntax */ |
| 1227 | unk_lang_val_print, /* Print a value using appropriate syntax */ |
| 1228 | unk_lang_value_print, /* Print a top-level value */ |
| 1229 | unk_lang_trampoline, /* Language specific skip_trampoline */ |
| 1230 | "this", /* name_of_this */ |
| 1231 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 1232 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
| 1233 | unk_lang_demangle, /* Language specific symbol demangler */ |
| 1234 | unk_lang_class_name, /* Language specific |
| 1235 | class_name_from_physname */ |
| 1236 | unk_op_print_tab, /* expression operators for printing */ |
| 1237 | 1, /* c-style arrays */ |
| 1238 | 0, /* String lower bound */ |
| 1239 | default_word_break_characters, |
| 1240 | default_make_symbol_completion_list, |
| 1241 | unknown_language_arch_info, /* la_language_arch_info. */ |
| 1242 | default_print_array_index, |
| 1243 | default_pass_by_reference, |
| 1244 | default_get_string, |
| 1245 | LANG_MAGIC |
| 1246 | }; |
| 1247 | |
| 1248 | const struct language_defn local_language_defn = |
| 1249 | { |
| 1250 | "local", |
| 1251 | language_auto, |
| 1252 | range_check_off, |
| 1253 | type_check_off, |
| 1254 | case_sensitive_on, |
| 1255 | array_row_major, |
| 1256 | macro_expansion_no, |
| 1257 | &exp_descriptor_standard, |
| 1258 | unk_lang_parser, |
| 1259 | unk_lang_error, |
| 1260 | null_post_parser, |
| 1261 | unk_lang_printchar, /* Print character constant */ |
| 1262 | unk_lang_printstr, |
| 1263 | unk_lang_emit_char, |
| 1264 | unk_lang_print_type, /* Print a type using appropriate syntax */ |
| 1265 | default_print_typedef, /* Print a typedef using appropriate syntax */ |
| 1266 | unk_lang_val_print, /* Print a value using appropriate syntax */ |
| 1267 | unk_lang_value_print, /* Print a top-level value */ |
| 1268 | unk_lang_trampoline, /* Language specific skip_trampoline */ |
| 1269 | "this", /* name_of_this */ |
| 1270 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 1271 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
| 1272 | unk_lang_demangle, /* Language specific symbol demangler */ |
| 1273 | unk_lang_class_name, /* Language specific |
| 1274 | class_name_from_physname */ |
| 1275 | unk_op_print_tab, /* expression operators for printing */ |
| 1276 | 1, /* c-style arrays */ |
| 1277 | 0, /* String lower bound */ |
| 1278 | default_word_break_characters, |
| 1279 | default_make_symbol_completion_list, |
| 1280 | unknown_language_arch_info, /* la_language_arch_info. */ |
| 1281 | default_print_array_index, |
| 1282 | default_pass_by_reference, |
| 1283 | default_get_string, |
| 1284 | LANG_MAGIC |
| 1285 | }; |
| 1286 | \f |
| 1287 | /* Per-architecture language information. */ |
| 1288 | |
| 1289 | static struct gdbarch_data *language_gdbarch_data; |
| 1290 | |
| 1291 | struct language_gdbarch |
| 1292 | { |
| 1293 | /* A vector of per-language per-architecture info. Indexed by "enum |
| 1294 | language". */ |
| 1295 | struct language_arch_info arch_info[nr_languages]; |
| 1296 | }; |
| 1297 | |
| 1298 | static void * |
| 1299 | language_gdbarch_post_init (struct gdbarch *gdbarch) |
| 1300 | { |
| 1301 | struct language_gdbarch *l; |
| 1302 | int i; |
| 1303 | |
| 1304 | l = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct language_gdbarch); |
| 1305 | for (i = 0; i < languages_size; i++) |
| 1306 | { |
| 1307 | if (languages[i] != NULL |
| 1308 | && languages[i]->la_language_arch_info != NULL) |
| 1309 | languages[i]->la_language_arch_info |
| 1310 | (gdbarch, l->arch_info + languages[i]->la_language); |
| 1311 | } |
| 1312 | return l; |
| 1313 | } |
| 1314 | |
| 1315 | struct type * |
| 1316 | language_string_char_type (const struct language_defn *la, |
| 1317 | struct gdbarch *gdbarch) |
| 1318 | { |
| 1319 | struct language_gdbarch *ld = gdbarch_data (gdbarch, |
| 1320 | language_gdbarch_data); |
| 1321 | |
| 1322 | return ld->arch_info[la->la_language].string_char_type; |
| 1323 | } |
| 1324 | |
| 1325 | struct type * |
| 1326 | language_bool_type (const struct language_defn *la, |
| 1327 | struct gdbarch *gdbarch) |
| 1328 | { |
| 1329 | struct language_gdbarch *ld = gdbarch_data (gdbarch, |
| 1330 | language_gdbarch_data); |
| 1331 | |
| 1332 | if (ld->arch_info[la->la_language].bool_type_symbol) |
| 1333 | { |
| 1334 | struct symbol *sym; |
| 1335 | |
| 1336 | sym = lookup_symbol (ld->arch_info[la->la_language].bool_type_symbol, |
| 1337 | NULL, VAR_DOMAIN, NULL); |
| 1338 | if (sym) |
| 1339 | { |
| 1340 | struct type *type = SYMBOL_TYPE (sym); |
| 1341 | |
| 1342 | if (type && TYPE_CODE (type) == TYPE_CODE_BOOL) |
| 1343 | return type; |
| 1344 | } |
| 1345 | } |
| 1346 | |
| 1347 | return ld->arch_info[la->la_language].bool_type_default; |
| 1348 | } |
| 1349 | |
| 1350 | struct type * |
| 1351 | language_lookup_primitive_type_by_name (const struct language_defn *la, |
| 1352 | struct gdbarch *gdbarch, |
| 1353 | const char *name) |
| 1354 | { |
| 1355 | struct language_gdbarch *ld = gdbarch_data (gdbarch, |
| 1356 | language_gdbarch_data); |
| 1357 | struct type *const *p; |
| 1358 | |
| 1359 | for (p = ld->arch_info[la->la_language].primitive_type_vector; |
| 1360 | (*p) != NULL; |
| 1361 | p++) |
| 1362 | { |
| 1363 | if (strcmp (TYPE_NAME (*p), name) == 0) |
| 1364 | return (*p); |
| 1365 | } |
| 1366 | return (NULL); |
| 1367 | } |
| 1368 | |
| 1369 | /* Initialize the language routines. */ |
| 1370 | |
| 1371 | void |
| 1372 | _initialize_language (void) |
| 1373 | { |
| 1374 | static const char *type_or_range_names[] |
| 1375 | = { "on", "off", "warn", "auto", NULL }; |
| 1376 | |
| 1377 | static const char *case_sensitive_names[] |
| 1378 | = { "on", "off", "auto", NULL }; |
| 1379 | |
| 1380 | language_gdbarch_data |
| 1381 | = gdbarch_data_register_post_init (language_gdbarch_post_init); |
| 1382 | |
| 1383 | /* GDB commands for language specific stuff. */ |
| 1384 | |
| 1385 | add_prefix_cmd ("check", no_class, set_check, |
| 1386 | _("Set the status of the type/range checker."), |
| 1387 | &setchecklist, "set check ", 0, &setlist); |
| 1388 | add_alias_cmd ("c", "check", no_class, 1, &setlist); |
| 1389 | add_alias_cmd ("ch", "check", no_class, 1, &setlist); |
| 1390 | |
| 1391 | add_prefix_cmd ("check", no_class, show_check, |
| 1392 | _("Show the status of the type/range checker."), |
| 1393 | &showchecklist, "show check ", 0, &showlist); |
| 1394 | add_alias_cmd ("c", "check", no_class, 1, &showlist); |
| 1395 | add_alias_cmd ("ch", "check", no_class, 1, &showlist); |
| 1396 | |
| 1397 | add_setshow_enum_cmd ("type", class_support, type_or_range_names, &type, |
| 1398 | _("Set type checking. (on/warn/off/auto)"), |
| 1399 | _("Show type checking. (on/warn/off/auto)"), |
| 1400 | NULL, set_type_command, |
| 1401 | show_type_command, |
| 1402 | &setchecklist, &showchecklist); |
| 1403 | |
| 1404 | add_setshow_enum_cmd ("range", class_support, type_or_range_names, |
| 1405 | &range, |
| 1406 | _("Set range checking. (on/warn/off/auto)"), |
| 1407 | _("Show range checking. (on/warn/off/auto)"), |
| 1408 | NULL, set_range_command, |
| 1409 | show_range_command, |
| 1410 | &setchecklist, &showchecklist); |
| 1411 | |
| 1412 | add_setshow_enum_cmd ("case-sensitive", class_support, case_sensitive_names, |
| 1413 | &case_sensitive, _("\ |
| 1414 | Set case sensitivity in name search. (on/off/auto)"), _("\ |
| 1415 | Show case sensitivity in name search. (on/off/auto)"), _("\ |
| 1416 | For Fortran the default is off; for other languages the default is on."), |
| 1417 | set_case_command, |
| 1418 | show_case_command, |
| 1419 | &setlist, &showlist); |
| 1420 | |
| 1421 | add_language (&auto_language_defn); |
| 1422 | add_language (&local_language_defn); |
| 1423 | add_language (&unknown_language_defn); |
| 1424 | |
| 1425 | language = xstrdup ("auto"); |
| 1426 | type = xstrdup ("auto"); |
| 1427 | range = xstrdup ("auto"); |
| 1428 | case_sensitive = xstrdup ("auto"); |
| 1429 | |
| 1430 | /* Have the above take effect. */ |
| 1431 | set_language (language_auto); |
| 1432 | } |