| 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 Free Software Foundation, Inc. |
| 5 | |
| 6 | Contributed by the Department of Computer Science at the State University |
| 7 | of New York at Buffalo. |
| 8 | |
| 9 | This file is part of GDB. |
| 10 | |
| 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. |
| 15 | |
| 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. |
| 20 | |
| 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/>. */ |
| 23 | |
| 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. */ |
| 27 | |
| 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. */ |
| 31 | |
| 32 | #include "defs.h" |
| 33 | #include <ctype.h> |
| 34 | #include "gdb_string.h" |
| 35 | |
| 36 | #include "symtab.h" |
| 37 | #include "gdbtypes.h" |
| 38 | #include "value.h" |
| 39 | #include "gdbcmd.h" |
| 40 | #include "expression.h" |
| 41 | #include "language.h" |
| 42 | #include "target.h" |
| 43 | #include "parser-defs.h" |
| 44 | #include "jv-lang.h" |
| 45 | #include "demangle.h" |
| 46 | #include "symfile.h" |
| 47 | |
| 48 | extern void _initialize_language (void); |
| 49 | |
| 50 | static void set_case_str (void); |
| 51 | |
| 52 | static void set_range_str (void); |
| 53 | |
| 54 | static void set_type_str (void); |
| 55 | |
| 56 | static void set_lang_str (void); |
| 57 | |
| 58 | static void unk_lang_error (char *); |
| 59 | |
| 60 | static int unk_lang_parser (void); |
| 61 | |
| 62 | static void show_check (char *, int); |
| 63 | |
| 64 | static void set_check (char *, int); |
| 65 | |
| 66 | static void set_type_range_case (void); |
| 67 | |
| 68 | static void unk_lang_emit_char (int c, struct ui_file *stream, int quoter); |
| 69 | |
| 70 | static void unk_lang_printchar (int c, struct ui_file *stream); |
| 71 | |
| 72 | static void unk_lang_print_type (struct type *, char *, struct ui_file *, |
| 73 | int, int); |
| 74 | |
| 75 | static int unk_lang_value_print (struct value *, struct ui_file *, |
| 76 | const struct value_print_options *); |
| 77 | |
| 78 | static CORE_ADDR unk_lang_trampoline (struct frame_info *, CORE_ADDR pc); |
| 79 | |
| 80 | /* Forward declaration */ |
| 81 | extern const struct language_defn unknown_language_defn; |
| 82 | |
| 83 | /* The current (default at startup) state of type and range checking. |
| 84 | (If the modes are set to "auto", though, these are changed based |
| 85 | on the default language at startup, and then again based on the |
| 86 | language of the first source file. */ |
| 87 | |
| 88 | enum range_mode range_mode = range_mode_auto; |
| 89 | enum range_check range_check = range_check_off; |
| 90 | enum type_mode type_mode = type_mode_auto; |
| 91 | enum type_check type_check = type_check_off; |
| 92 | enum case_mode case_mode = case_mode_auto; |
| 93 | enum case_sensitivity case_sensitivity = case_sensitive_on; |
| 94 | |
| 95 | /* The current language and language_mode (see language.h) */ |
| 96 | |
| 97 | const struct language_defn *current_language = &unknown_language_defn; |
| 98 | enum language_mode language_mode = language_mode_auto; |
| 99 | |
| 100 | /* The language that the user expects to be typing in (the language |
| 101 | of main(), or the last language we notified them about, or C). */ |
| 102 | |
| 103 | const struct language_defn *expected_language; |
| 104 | |
| 105 | /* The list of supported languages. The list itself is malloc'd. */ |
| 106 | |
| 107 | static const struct language_defn **languages; |
| 108 | static unsigned languages_size; |
| 109 | static unsigned languages_allocsize; |
| 110 | #define DEFAULT_ALLOCSIZE 4 |
| 111 | |
| 112 | /* The "set language/type/range" commands all put stuff in these |
| 113 | buffers. This is to make them work as set/show commands. The |
| 114 | user's string is copied here, then the set_* commands look at |
| 115 | them and update them to something that looks nice when it is |
| 116 | printed out. */ |
| 117 | |
| 118 | static char *language; |
| 119 | static char *type; |
| 120 | static char *range; |
| 121 | static char *case_sensitive; |
| 122 | |
| 123 | /* Warning issued when current_language and the language of the current |
| 124 | frame do not match. */ |
| 125 | char lang_frame_mismatch_warn[] = |
| 126 | "Warning: the current language does not match this frame."; |
| 127 | \f |
| 128 | /* This page contains the functions corresponding to GDB commands |
| 129 | and their helpers. */ |
| 130 | |
| 131 | /* Show command. Display a warning if the language set |
| 132 | does not match the frame. */ |
| 133 | static void |
| 134 | show_language_command (struct ui_file *file, int from_tty, |
| 135 | struct cmd_list_element *c, const char *value) |
| 136 | { |
| 137 | enum language flang; /* The language of the current frame */ |
| 138 | |
| 139 | deprecated_show_value_hack (file, from_tty, c, value); |
| 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 | char *err_lang; |
| 154 | |
| 155 | if (!language || !language[0]) |
| 156 | { |
| 157 | printf_unfiltered (_("\ |
| 158 | The currently understood settings are:\n\n\ |
| 159 | local or auto Automatic setting based on source file\n")); |
| 160 | |
| 161 | for (i = 0; i < languages_size; ++i) |
| 162 | { |
| 163 | /* Already dealt with these above. */ |
| 164 | if (languages[i]->la_language == language_unknown |
| 165 | || languages[i]->la_language == language_auto) |
| 166 | continue; |
| 167 | |
| 168 | /* FIXME: i18n: for now assume that the human-readable name |
| 169 | is just a capitalization of the internal name. */ |
| 170 | printf_unfiltered ("%-16s Use the %c%s language\n", |
| 171 | languages[i]->la_name, |
| 172 | /* Capitalize first letter of language |
| 173 | name. */ |
| 174 | toupper (languages[i]->la_name[0]), |
| 175 | languages[i]->la_name + 1); |
| 176 | } |
| 177 | /* Restore the silly string. */ |
| 178 | set_language (current_language->la_language); |
| 179 | return; |
| 180 | } |
| 181 | |
| 182 | /* Search the list of languages for a match. */ |
| 183 | for (i = 0; i < languages_size; i++) |
| 184 | { |
| 185 | if (strcmp (languages[i]->la_name, language) == 0) |
| 186 | { |
| 187 | /* Found it! Go into manual mode, and use this language. */ |
| 188 | if (languages[i]->la_language == language_auto) |
| 189 | { |
| 190 | /* Enter auto mode. Set to the current frame's language, if |
| 191 | known, or fallback to the initial language. */ |
| 192 | language_mode = language_mode_auto; |
| 193 | flang = get_frame_language (); |
| 194 | if (flang != language_unknown) |
| 195 | set_language (flang); |
| 196 | else |
| 197 | set_initial_language (); |
| 198 | expected_language = current_language; |
| 199 | return; |
| 200 | } |
| 201 | else |
| 202 | { |
| 203 | /* Enter manual mode. Set the specified language. */ |
| 204 | language_mode = language_mode_manual; |
| 205 | current_language = languages[i]; |
| 206 | set_type_range_case (); |
| 207 | set_lang_str (); |
| 208 | expected_language = current_language; |
| 209 | return; |
| 210 | } |
| 211 | } |
| 212 | } |
| 213 | |
| 214 | /* Reset the language (esp. the global string "language") to the |
| 215 | correct values. */ |
| 216 | err_lang = savestring (language, strlen (language)); |
| 217 | make_cleanup (xfree, err_lang); /* Free it after error */ |
| 218 | set_language (current_language->la_language); |
| 219 | error (_("Unknown language `%s'."), err_lang); |
| 220 | } |
| 221 | |
| 222 | /* Show command. Display a warning if the type setting does |
| 223 | not match the current language. */ |
| 224 | static void |
| 225 | show_type_command (struct ui_file *file, int from_tty, |
| 226 | struct cmd_list_element *c, const char *value) |
| 227 | { |
| 228 | deprecated_show_value_hack (file, from_tty, c, value); |
| 229 | if (type_check != current_language->la_type_check) |
| 230 | printf_unfiltered ( |
| 231 | "Warning: the current type check setting does not match the language.\n"); |
| 232 | } |
| 233 | |
| 234 | /* Set command. Change the setting for type checking. */ |
| 235 | static void |
| 236 | set_type_command (char *ignore, int from_tty, struct cmd_list_element *c) |
| 237 | { |
| 238 | if (strcmp (type, "on") == 0) |
| 239 | { |
| 240 | type_check = type_check_on; |
| 241 | type_mode = type_mode_manual; |
| 242 | } |
| 243 | else if (strcmp (type, "warn") == 0) |
| 244 | { |
| 245 | type_check = type_check_warn; |
| 246 | type_mode = type_mode_manual; |
| 247 | } |
| 248 | else if (strcmp (type, "off") == 0) |
| 249 | { |
| 250 | type_check = type_check_off; |
| 251 | type_mode = type_mode_manual; |
| 252 | } |
| 253 | else if (strcmp (type, "auto") == 0) |
| 254 | { |
| 255 | type_mode = type_mode_auto; |
| 256 | set_type_range_case (); |
| 257 | /* Avoid hitting the set_type_str call below. We |
| 258 | did it in set_type_range_case. */ |
| 259 | return; |
| 260 | } |
| 261 | else |
| 262 | { |
| 263 | warning (_("Unrecognized type check setting: \"%s\""), type); |
| 264 | } |
| 265 | set_type_str (); |
| 266 | show_type_command (NULL, from_tty, NULL, NULL); |
| 267 | } |
| 268 | |
| 269 | /* Show command. Display a warning if the range setting does |
| 270 | not match the current language. */ |
| 271 | static void |
| 272 | show_range_command (struct ui_file *file, int from_tty, |
| 273 | struct cmd_list_element *c, const char *value) |
| 274 | { |
| 275 | deprecated_show_value_hack (file, from_tty, c, value); |
| 276 | if (range_check != current_language->la_range_check) |
| 277 | printf_unfiltered ( |
| 278 | "Warning: the current range check setting does not match the language.\n"); |
| 279 | } |
| 280 | |
| 281 | /* Set command. Change the setting for range checking. */ |
| 282 | static void |
| 283 | set_range_command (char *ignore, int from_tty, struct cmd_list_element *c) |
| 284 | { |
| 285 | if (strcmp (range, "on") == 0) |
| 286 | { |
| 287 | range_check = range_check_on; |
| 288 | range_mode = range_mode_manual; |
| 289 | } |
| 290 | else if (strcmp (range, "warn") == 0) |
| 291 | { |
| 292 | range_check = range_check_warn; |
| 293 | range_mode = range_mode_manual; |
| 294 | } |
| 295 | else if (strcmp (range, "off") == 0) |
| 296 | { |
| 297 | range_check = range_check_off; |
| 298 | range_mode = range_mode_manual; |
| 299 | } |
| 300 | else if (strcmp (range, "auto") == 0) |
| 301 | { |
| 302 | range_mode = range_mode_auto; |
| 303 | set_type_range_case (); |
| 304 | /* Avoid hitting the set_range_str call below. We |
| 305 | did it in set_type_range_case. */ |
| 306 | return; |
| 307 | } |
| 308 | else |
| 309 | { |
| 310 | warning (_("Unrecognized range check setting: \"%s\""), range); |
| 311 | } |
| 312 | set_range_str (); |
| 313 | show_range_command (NULL, from_tty, NULL, NULL); |
| 314 | } |
| 315 | |
| 316 | /* Show command. Display a warning if the case sensitivity setting does |
| 317 | not match the current language. */ |
| 318 | static void |
| 319 | show_case_command (struct ui_file *file, int from_tty, |
| 320 | struct cmd_list_element *c, const char *value) |
| 321 | { |
| 322 | deprecated_show_value_hack (file, from_tty, c, value); |
| 323 | if (case_sensitivity != current_language->la_case_sensitivity) |
| 324 | printf_unfiltered( |
| 325 | "Warning: the current case sensitivity setting does not match the language.\n"); |
| 326 | } |
| 327 | |
| 328 | /* Set command. Change the setting for case sensitivity. */ |
| 329 | |
| 330 | static void |
| 331 | set_case_command (char *ignore, int from_tty, struct cmd_list_element *c) |
| 332 | { |
| 333 | if (strcmp (case_sensitive, "on") == 0) |
| 334 | { |
| 335 | case_sensitivity = case_sensitive_on; |
| 336 | case_mode = case_mode_manual; |
| 337 | } |
| 338 | else if (strcmp (case_sensitive, "off") == 0) |
| 339 | { |
| 340 | case_sensitivity = case_sensitive_off; |
| 341 | case_mode = case_mode_manual; |
| 342 | } |
| 343 | else if (strcmp (case_sensitive, "auto") == 0) |
| 344 | { |
| 345 | case_mode = case_mode_auto; |
| 346 | set_type_range_case (); |
| 347 | /* Avoid hitting the set_case_str call below. We did it in |
| 348 | set_type_range_case. */ |
| 349 | return; |
| 350 | } |
| 351 | else |
| 352 | { |
| 353 | warning (_("Unrecognized case-sensitive setting: \"%s\""), |
| 354 | case_sensitive); |
| 355 | } |
| 356 | set_case_str(); |
| 357 | show_case_command (NULL, from_tty, NULL, NULL); |
| 358 | } |
| 359 | |
| 360 | /* Set the status of range and type checking and case sensitivity based on |
| 361 | the current modes and the current language. |
| 362 | If SHOW is non-zero, then print out the current language, |
| 363 | type and range checking status. */ |
| 364 | static void |
| 365 | set_type_range_case (void) |
| 366 | { |
| 367 | |
| 368 | if (range_mode == range_mode_auto) |
| 369 | range_check = current_language->la_range_check; |
| 370 | |
| 371 | if (type_mode == type_mode_auto) |
| 372 | type_check = current_language->la_type_check; |
| 373 | |
| 374 | if (case_mode == case_mode_auto) |
| 375 | case_sensitivity = current_language->la_case_sensitivity; |
| 376 | |
| 377 | set_type_str (); |
| 378 | set_range_str (); |
| 379 | set_case_str (); |
| 380 | } |
| 381 | |
| 382 | /* Set current language to (enum language) LANG. Returns previous language. */ |
| 383 | |
| 384 | enum language |
| 385 | set_language (enum language lang) |
| 386 | { |
| 387 | int i; |
| 388 | enum language prev_language; |
| 389 | |
| 390 | prev_language = current_language->la_language; |
| 391 | |
| 392 | for (i = 0; i < languages_size; i++) |
| 393 | { |
| 394 | if (languages[i]->la_language == lang) |
| 395 | { |
| 396 | current_language = languages[i]; |
| 397 | set_type_range_case (); |
| 398 | set_lang_str (); |
| 399 | break; |
| 400 | } |
| 401 | } |
| 402 | |
| 403 | return prev_language; |
| 404 | } |
| 405 | \f |
| 406 | /* This page contains functions that update the global vars |
| 407 | language, type and range. */ |
| 408 | static void |
| 409 | set_lang_str (void) |
| 410 | { |
| 411 | char *prefix = ""; |
| 412 | |
| 413 | if (language) |
| 414 | xfree (language); |
| 415 | if (language_mode == language_mode_auto) |
| 416 | prefix = "auto; currently "; |
| 417 | |
| 418 | language = concat (prefix, current_language->la_name, (char *)NULL); |
| 419 | } |
| 420 | |
| 421 | static void |
| 422 | set_type_str (void) |
| 423 | { |
| 424 | char *tmp = NULL, *prefix = ""; |
| 425 | |
| 426 | if (type) |
| 427 | xfree (type); |
| 428 | if (type_mode == type_mode_auto) |
| 429 | prefix = "auto; currently "; |
| 430 | |
| 431 | switch (type_check) |
| 432 | { |
| 433 | case type_check_on: |
| 434 | tmp = "on"; |
| 435 | break; |
| 436 | case type_check_off: |
| 437 | tmp = "off"; |
| 438 | break; |
| 439 | case type_check_warn: |
| 440 | tmp = "warn"; |
| 441 | break; |
| 442 | default: |
| 443 | error (_("Unrecognized type check setting.")); |
| 444 | } |
| 445 | |
| 446 | type = concat (prefix, tmp, (char *)NULL); |
| 447 | } |
| 448 | |
| 449 | static void |
| 450 | set_range_str (void) |
| 451 | { |
| 452 | char *tmp, *pref = ""; |
| 453 | |
| 454 | if (range_mode == range_mode_auto) |
| 455 | pref = "auto; currently "; |
| 456 | |
| 457 | switch (range_check) |
| 458 | { |
| 459 | case range_check_on: |
| 460 | tmp = "on"; |
| 461 | break; |
| 462 | case range_check_off: |
| 463 | tmp = "off"; |
| 464 | break; |
| 465 | case range_check_warn: |
| 466 | tmp = "warn"; |
| 467 | break; |
| 468 | default: |
| 469 | error (_("Unrecognized range check setting.")); |
| 470 | } |
| 471 | |
| 472 | if (range) |
| 473 | xfree (range); |
| 474 | range = concat (pref, tmp, (char *)NULL); |
| 475 | } |
| 476 | |
| 477 | static void |
| 478 | set_case_str (void) |
| 479 | { |
| 480 | char *tmp = NULL, *prefix = ""; |
| 481 | |
| 482 | if (case_mode==case_mode_auto) |
| 483 | prefix = "auto; currently "; |
| 484 | |
| 485 | switch (case_sensitivity) |
| 486 | { |
| 487 | case case_sensitive_on: |
| 488 | tmp = "on"; |
| 489 | break; |
| 490 | case case_sensitive_off: |
| 491 | tmp = "off"; |
| 492 | break; |
| 493 | default: |
| 494 | error (_("Unrecognized case-sensitive setting.")); |
| 495 | } |
| 496 | |
| 497 | xfree (case_sensitive); |
| 498 | case_sensitive = concat (prefix, tmp, (char *)NULL); |
| 499 | } |
| 500 | |
| 501 | /* Print out the current language settings: language, range and |
| 502 | type checking. If QUIETLY, print only what has changed. */ |
| 503 | |
| 504 | void |
| 505 | language_info (int quietly) |
| 506 | { |
| 507 | if (quietly && expected_language == current_language) |
| 508 | return; |
| 509 | |
| 510 | expected_language = current_language; |
| 511 | printf_unfiltered (_("Current language: %s\n"), language); |
| 512 | show_language_command (NULL, 1, NULL, NULL); |
| 513 | |
| 514 | if (!quietly) |
| 515 | { |
| 516 | printf_unfiltered (_("Type checking: %s\n"), type); |
| 517 | show_type_command (NULL, 1, NULL, NULL); |
| 518 | printf_unfiltered (_("Range checking: %s\n"), range); |
| 519 | show_range_command (NULL, 1, NULL, NULL); |
| 520 | printf_unfiltered (_("Case sensitivity: %s\n"), case_sensitive); |
| 521 | show_case_command (NULL, 1, NULL, NULL); |
| 522 | } |
| 523 | } |
| 524 | \f |
| 525 | /* Return the result of a binary operation. */ |
| 526 | |
| 527 | #if 0 /* Currently unused */ |
| 528 | |
| 529 | struct type * |
| 530 | binop_result_type (struct value *v1, struct value *v2) |
| 531 | { |
| 532 | int size, uns; |
| 533 | struct type *t1 = check_typedef (VALUE_TYPE (v1)); |
| 534 | struct type *t2 = check_typedef (VALUE_TYPE (v2)); |
| 535 | |
| 536 | int l1 = TYPE_LENGTH (t1); |
| 537 | int l2 = TYPE_LENGTH (t2); |
| 538 | |
| 539 | switch (current_language->la_language) |
| 540 | { |
| 541 | case language_c: |
| 542 | case language_cplus: |
| 543 | case language_objc: |
| 544 | if (TYPE_CODE (t1) == TYPE_CODE_FLT) |
| 545 | return TYPE_CODE (t2) == TYPE_CODE_FLT && l2 > l1 ? |
| 546 | VALUE_TYPE (v2) : VALUE_TYPE (v1); |
| 547 | else if (TYPE_CODE (t2) == TYPE_CODE_FLT) |
| 548 | return TYPE_CODE (t1) == TYPE_CODE_FLT && l1 > l2 ? |
| 549 | VALUE_TYPE (v1) : VALUE_TYPE (v2); |
| 550 | else if (TYPE_UNSIGNED (t1) && l1 > l2) |
| 551 | return VALUE_TYPE (v1); |
| 552 | else if (TYPE_UNSIGNED (t2) && l2 > l1) |
| 553 | return VALUE_TYPE (v2); |
| 554 | else /* Both are signed. Result is the longer type */ |
| 555 | return l1 > l2 ? VALUE_TYPE (v1) : VALUE_TYPE (v2); |
| 556 | break; |
| 557 | case language_m2: |
| 558 | /* If we are doing type-checking, l1 should equal l2, so this is |
| 559 | not needed. */ |
| 560 | return l1 > l2 ? VALUE_TYPE (v1) : VALUE_TYPE (v2); |
| 561 | break; |
| 562 | } |
| 563 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
| 564 | return (struct type *) 0; /* For lint */ |
| 565 | } |
| 566 | |
| 567 | #endif /* 0 */ |
| 568 | #if 0 |
| 569 | /* This page contains functions that are used in type/range checking. |
| 570 | They all return zero if the type/range check fails. |
| 571 | |
| 572 | It is hoped that these will make extending GDB to parse different |
| 573 | languages a little easier. These are primarily used in eval.c when |
| 574 | evaluating expressions and making sure that their types are correct. |
| 575 | Instead of having a mess of conjucted/disjuncted expressions in an "if", |
| 576 | the ideas of type can be wrapped up in the following functions. |
| 577 | |
| 578 | Note that some of them are not currently dependent upon which language |
| 579 | is currently being parsed. For example, floats are the same in |
| 580 | C and Modula-2 (ie. the only floating point type has TYPE_CODE of |
| 581 | TYPE_CODE_FLT), while booleans are different. */ |
| 582 | |
| 583 | /* Returns non-zero if its argument is a simple type. This is the same for |
| 584 | both Modula-2 and for C. In the C case, TYPE_CODE_CHAR will never occur, |
| 585 | and thus will never cause the failure of the test. */ |
| 586 | int |
| 587 | simple_type (struct type *type) |
| 588 | { |
| 589 | CHECK_TYPEDEF (type); |
| 590 | switch (TYPE_CODE (type)) |
| 591 | { |
| 592 | case TYPE_CODE_INT: |
| 593 | case TYPE_CODE_CHAR: |
| 594 | case TYPE_CODE_ENUM: |
| 595 | case TYPE_CODE_FLT: |
| 596 | case TYPE_CODE_RANGE: |
| 597 | case TYPE_CODE_BOOL: |
| 598 | return 1; |
| 599 | |
| 600 | default: |
| 601 | return 0; |
| 602 | } |
| 603 | } |
| 604 | |
| 605 | /* Returns non-zero if its argument is of an ordered type. |
| 606 | An ordered type is one in which the elements can be tested for the |
| 607 | properties of "greater than", "less than", etc, or for which the |
| 608 | operations "increment" or "decrement" make sense. */ |
| 609 | int |
| 610 | ordered_type (struct type *type) |
| 611 | { |
| 612 | CHECK_TYPEDEF (type); |
| 613 | switch (TYPE_CODE (type)) |
| 614 | { |
| 615 | case TYPE_CODE_INT: |
| 616 | case TYPE_CODE_CHAR: |
| 617 | case TYPE_CODE_ENUM: |
| 618 | case TYPE_CODE_FLT: |
| 619 | case TYPE_CODE_RANGE: |
| 620 | return 1; |
| 621 | |
| 622 | default: |
| 623 | return 0; |
| 624 | } |
| 625 | } |
| 626 | |
| 627 | /* Returns non-zero if the two types are the same */ |
| 628 | int |
| 629 | same_type (struct type *arg1, struct type *arg2) |
| 630 | { |
| 631 | CHECK_TYPEDEF (type); |
| 632 | if (structured_type (arg1) ? !structured_type (arg2) : structured_type (arg2)) |
| 633 | /* One is structured and one isn't */ |
| 634 | return 0; |
| 635 | else if (structured_type (arg1) && structured_type (arg2)) |
| 636 | return arg1 == arg2; |
| 637 | else if (numeric_type (arg1) && numeric_type (arg2)) |
| 638 | return (TYPE_CODE (arg2) == TYPE_CODE (arg1)) && |
| 639 | (TYPE_UNSIGNED (arg1) == TYPE_UNSIGNED (arg2)) |
| 640 | ? 1 : 0; |
| 641 | else |
| 642 | return arg1 == arg2; |
| 643 | } |
| 644 | |
| 645 | /* Returns non-zero if the type is integral */ |
| 646 | int |
| 647 | integral_type (struct type *type) |
| 648 | { |
| 649 | CHECK_TYPEDEF (type); |
| 650 | switch (current_language->la_language) |
| 651 | { |
| 652 | case language_c: |
| 653 | case language_cplus: |
| 654 | case language_objc: |
| 655 | return (TYPE_CODE (type) != TYPE_CODE_INT) && |
| 656 | (TYPE_CODE (type) != TYPE_CODE_ENUM) ? 0 : 1; |
| 657 | case language_m2: |
| 658 | case language_pascal: |
| 659 | return TYPE_CODE (type) != TYPE_CODE_INT ? 0 : 1; |
| 660 | default: |
| 661 | error (_("Language not supported.")); |
| 662 | } |
| 663 | } |
| 664 | |
| 665 | /* Returns non-zero if the value is numeric */ |
| 666 | int |
| 667 | numeric_type (struct type *type) |
| 668 | { |
| 669 | CHECK_TYPEDEF (type); |
| 670 | switch (TYPE_CODE (type)) |
| 671 | { |
| 672 | case TYPE_CODE_INT: |
| 673 | case TYPE_CODE_FLT: |
| 674 | return 1; |
| 675 | |
| 676 | default: |
| 677 | return 0; |
| 678 | } |
| 679 | } |
| 680 | |
| 681 | /* Returns non-zero if the value is a character type */ |
| 682 | int |
| 683 | character_type (struct type *type) |
| 684 | { |
| 685 | CHECK_TYPEDEF (type); |
| 686 | switch (current_language->la_language) |
| 687 | { |
| 688 | case language_m2: |
| 689 | case language_pascal: |
| 690 | return TYPE_CODE (type) != TYPE_CODE_CHAR ? 0 : 1; |
| 691 | |
| 692 | case language_c: |
| 693 | case language_cplus: |
| 694 | case language_objc: |
| 695 | return (TYPE_CODE (type) == TYPE_CODE_INT) && |
| 696 | TYPE_LENGTH (type) == sizeof (char) |
| 697 | ? 1 : 0; |
| 698 | default: |
| 699 | return (0); |
| 700 | } |
| 701 | } |
| 702 | |
| 703 | /* Returns non-zero if the value is a string type */ |
| 704 | int |
| 705 | string_type (struct type *type) |
| 706 | { |
| 707 | CHECK_TYPEDEF (type); |
| 708 | switch (current_language->la_language) |
| 709 | { |
| 710 | case language_m2: |
| 711 | case language_pascal: |
| 712 | return TYPE_CODE (type) != TYPE_CODE_STRING ? 0 : 1; |
| 713 | |
| 714 | case language_c: |
| 715 | case language_cplus: |
| 716 | case language_objc: |
| 717 | /* C does not have distinct string type. */ |
| 718 | return (0); |
| 719 | default: |
| 720 | return (0); |
| 721 | } |
| 722 | } |
| 723 | |
| 724 | /* Returns non-zero if the value is a boolean type */ |
| 725 | int |
| 726 | boolean_type (struct type *type) |
| 727 | { |
| 728 | CHECK_TYPEDEF (type); |
| 729 | if (TYPE_CODE (type) == TYPE_CODE_BOOL) |
| 730 | return 1; |
| 731 | switch (current_language->la_language) |
| 732 | { |
| 733 | case language_c: |
| 734 | case language_cplus: |
| 735 | case language_objc: |
| 736 | /* Might be more cleanly handled by having a |
| 737 | TYPE_CODE_INT_NOT_BOOL for (the deleted) CHILL and such |
| 738 | languages, or a TYPE_CODE_INT_OR_BOOL for C. */ |
| 739 | if (TYPE_CODE (type) == TYPE_CODE_INT) |
| 740 | return 1; |
| 741 | default: |
| 742 | break; |
| 743 | } |
| 744 | return 0; |
| 745 | } |
| 746 | |
| 747 | /* Returns non-zero if the value is a floating-point type */ |
| 748 | int |
| 749 | float_type (struct type *type) |
| 750 | { |
| 751 | CHECK_TYPEDEF (type); |
| 752 | return TYPE_CODE (type) == TYPE_CODE_FLT; |
| 753 | } |
| 754 | |
| 755 | /* Returns non-zero if the value is a pointer type */ |
| 756 | int |
| 757 | pointer_type (struct type *type) |
| 758 | { |
| 759 | return TYPE_CODE (type) == TYPE_CODE_PTR || |
| 760 | TYPE_CODE (type) == TYPE_CODE_REF; |
| 761 | } |
| 762 | |
| 763 | /* Returns non-zero if the value is a structured type */ |
| 764 | int |
| 765 | structured_type (struct type *type) |
| 766 | { |
| 767 | CHECK_TYPEDEF (type); |
| 768 | switch (current_language->la_language) |
| 769 | { |
| 770 | case language_c: |
| 771 | case language_cplus: |
| 772 | case language_objc: |
| 773 | return (TYPE_CODE (type) == TYPE_CODE_STRUCT) || |
| 774 | (TYPE_CODE (type) == TYPE_CODE_UNION) || |
| 775 | (TYPE_CODE (type) == TYPE_CODE_ARRAY); |
| 776 | case language_pascal: |
| 777 | return (TYPE_CODE(type) == TYPE_CODE_STRUCT) || |
| 778 | (TYPE_CODE(type) == TYPE_CODE_UNION) || |
| 779 | (TYPE_CODE(type) == TYPE_CODE_SET) || |
| 780 | (TYPE_CODE(type) == TYPE_CODE_ARRAY); |
| 781 | case language_m2: |
| 782 | return (TYPE_CODE (type) == TYPE_CODE_STRUCT) || |
| 783 | (TYPE_CODE (type) == TYPE_CODE_SET) || |
| 784 | (TYPE_CODE (type) == TYPE_CODE_ARRAY); |
| 785 | default: |
| 786 | return (0); |
| 787 | } |
| 788 | } |
| 789 | #endif |
| 790 | \f |
| 791 | /* This page contains functions that return info about |
| 792 | (struct value) values used in GDB. */ |
| 793 | |
| 794 | /* Returns non-zero if the value VAL represents a true value. */ |
| 795 | int |
| 796 | value_true (struct value *val) |
| 797 | { |
| 798 | /* It is possible that we should have some sort of error if a non-boolean |
| 799 | value is used in this context. Possibly dependent on some kind of |
| 800 | "boolean-checking" option like range checking. But it should probably |
| 801 | not depend on the language except insofar as is necessary to identify |
| 802 | a "boolean" value (i.e. in C using a float, pointer, etc., as a boolean |
| 803 | should be an error, probably). */ |
| 804 | return !value_logical_not (val); |
| 805 | } |
| 806 | \f |
| 807 | /* This page contains functions for the printing out of |
| 808 | error messages that occur during type- and range- |
| 809 | checking. */ |
| 810 | |
| 811 | /* These are called when a language fails a type- or range-check. The |
| 812 | first argument should be a printf()-style format string, and the |
| 813 | rest of the arguments should be its arguments. If |
| 814 | [type|range]_check is [type|range]_check_on, an error is printed; |
| 815 | if [type|range]_check_warn, a warning; otherwise just the |
| 816 | message. */ |
| 817 | |
| 818 | void |
| 819 | type_error (const char *string,...) |
| 820 | { |
| 821 | va_list args; |
| 822 | va_start (args, string); |
| 823 | |
| 824 | switch (type_check) |
| 825 | { |
| 826 | case type_check_warn: |
| 827 | vwarning (string, args); |
| 828 | break; |
| 829 | case type_check_on: |
| 830 | verror (string, args); |
| 831 | break; |
| 832 | case type_check_off: |
| 833 | /* FIXME: cagney/2002-01-30: Should this function print anything |
| 834 | when type error is off? */ |
| 835 | vfprintf_filtered (gdb_stderr, string, args); |
| 836 | fprintf_filtered (gdb_stderr, "\n"); |
| 837 | break; |
| 838 | default: |
| 839 | internal_error (__FILE__, __LINE__, _("bad switch")); |
| 840 | } |
| 841 | va_end (args); |
| 842 | } |
| 843 | |
| 844 | void |
| 845 | range_error (const char *string,...) |
| 846 | { |
| 847 | va_list args; |
| 848 | va_start (args, string); |
| 849 | |
| 850 | switch (range_check) |
| 851 | { |
| 852 | case range_check_warn: |
| 853 | vwarning (string, args); |
| 854 | break; |
| 855 | case range_check_on: |
| 856 | verror (string, args); |
| 857 | break; |
| 858 | case range_check_off: |
| 859 | /* FIXME: cagney/2002-01-30: Should this function print anything |
| 860 | when range error is off? */ |
| 861 | vfprintf_filtered (gdb_stderr, string, args); |
| 862 | fprintf_filtered (gdb_stderr, "\n"); |
| 863 | break; |
| 864 | default: |
| 865 | internal_error (__FILE__, __LINE__, _("bad switch")); |
| 866 | } |
| 867 | va_end (args); |
| 868 | } |
| 869 | \f |
| 870 | |
| 871 | /* This page contains miscellaneous functions */ |
| 872 | |
| 873 | /* Return the language enum for a given language string. */ |
| 874 | |
| 875 | enum language |
| 876 | language_enum (char *str) |
| 877 | { |
| 878 | int i; |
| 879 | |
| 880 | for (i = 0; i < languages_size; i++) |
| 881 | if (strcmp (languages[i]->la_name, str) == 0) |
| 882 | return languages[i]->la_language; |
| 883 | |
| 884 | return language_unknown; |
| 885 | } |
| 886 | |
| 887 | /* Return the language struct for a given language enum. */ |
| 888 | |
| 889 | const struct language_defn * |
| 890 | language_def (enum language lang) |
| 891 | { |
| 892 | int i; |
| 893 | |
| 894 | for (i = 0; i < languages_size; i++) |
| 895 | { |
| 896 | if (languages[i]->la_language == lang) |
| 897 | { |
| 898 | return languages[i]; |
| 899 | } |
| 900 | } |
| 901 | return NULL; |
| 902 | } |
| 903 | |
| 904 | /* Return the language as a string */ |
| 905 | char * |
| 906 | language_str (enum language lang) |
| 907 | { |
| 908 | int i; |
| 909 | |
| 910 | for (i = 0; i < languages_size; i++) |
| 911 | { |
| 912 | if (languages[i]->la_language == lang) |
| 913 | { |
| 914 | return languages[i]->la_name; |
| 915 | } |
| 916 | } |
| 917 | return "Unknown"; |
| 918 | } |
| 919 | |
| 920 | static void |
| 921 | set_check (char *ignore, int from_tty) |
| 922 | { |
| 923 | printf_unfiltered ( |
| 924 | "\"set check\" must be followed by the name of a check subcommand.\n"); |
| 925 | help_list (setchecklist, "set check ", -1, gdb_stdout); |
| 926 | } |
| 927 | |
| 928 | static void |
| 929 | show_check (char *ignore, int from_tty) |
| 930 | { |
| 931 | cmd_show_list (showchecklist, from_tty, ""); |
| 932 | } |
| 933 | \f |
| 934 | /* Add a language to the set of known languages. */ |
| 935 | |
| 936 | void |
| 937 | add_language (const struct language_defn *lang) |
| 938 | { |
| 939 | if (lang->la_magic != LANG_MAGIC) |
| 940 | { |
| 941 | fprintf_unfiltered (gdb_stderr, "Magic number of %s language struct wrong\n", |
| 942 | lang->la_name); |
| 943 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
| 944 | } |
| 945 | |
| 946 | if (!languages) |
| 947 | { |
| 948 | languages_allocsize = DEFAULT_ALLOCSIZE; |
| 949 | languages = (const struct language_defn **) xmalloc |
| 950 | (languages_allocsize * sizeof (*languages)); |
| 951 | } |
| 952 | if (languages_size >= languages_allocsize) |
| 953 | { |
| 954 | languages_allocsize *= 2; |
| 955 | languages = (const struct language_defn **) xrealloc ((char *) languages, |
| 956 | languages_allocsize * sizeof (*languages)); |
| 957 | } |
| 958 | languages[languages_size++] = lang; |
| 959 | } |
| 960 | |
| 961 | /* Iterate through all registered languages looking for and calling |
| 962 | any non-NULL struct language_defn.skip_trampoline() functions. |
| 963 | Return the result from the first that returns non-zero, or 0 if all |
| 964 | `fail'. */ |
| 965 | CORE_ADDR |
| 966 | skip_language_trampoline (struct frame_info *frame, CORE_ADDR pc) |
| 967 | { |
| 968 | int i; |
| 969 | |
| 970 | for (i = 0; i < languages_size; i++) |
| 971 | { |
| 972 | if (languages[i]->skip_trampoline) |
| 973 | { |
| 974 | CORE_ADDR real_pc = (languages[i]->skip_trampoline) (frame, pc); |
| 975 | if (real_pc) |
| 976 | return real_pc; |
| 977 | } |
| 978 | } |
| 979 | |
| 980 | return 0; |
| 981 | } |
| 982 | |
| 983 | /* Return demangled language symbol, or NULL. |
| 984 | FIXME: Options are only useful for certain languages and ignored |
| 985 | by others, so it would be better to remove them here and have a |
| 986 | more flexible demangler for the languages that need it. |
| 987 | FIXME: Sometimes the demangler is invoked when we don't know the |
| 988 | language, so we can't use this everywhere. */ |
| 989 | char * |
| 990 | language_demangle (const struct language_defn *current_language, |
| 991 | const char *mangled, int options) |
| 992 | { |
| 993 | if (current_language != NULL && current_language->la_demangle) |
| 994 | return current_language->la_demangle (mangled, options); |
| 995 | return NULL; |
| 996 | } |
| 997 | |
| 998 | /* Return class name from physname or NULL. */ |
| 999 | char * |
| 1000 | language_class_name_from_physname (const struct language_defn *current_language, |
| 1001 | const char *physname) |
| 1002 | { |
| 1003 | if (current_language != NULL && current_language->la_class_name_from_physname) |
| 1004 | return current_language->la_class_name_from_physname (physname); |
| 1005 | return NULL; |
| 1006 | } |
| 1007 | |
| 1008 | /* Return non-zero if TYPE should be passed (and returned) by |
| 1009 | reference at the language level. */ |
| 1010 | int |
| 1011 | language_pass_by_reference (struct type *type) |
| 1012 | { |
| 1013 | return current_language->la_pass_by_reference (type); |
| 1014 | } |
| 1015 | |
| 1016 | /* Return zero; by default, types are passed by value at the language |
| 1017 | level. The target ABI may pass or return some structs by reference |
| 1018 | independent of this. */ |
| 1019 | int |
| 1020 | default_pass_by_reference (struct type *type) |
| 1021 | { |
| 1022 | return 0; |
| 1023 | } |
| 1024 | |
| 1025 | /* Return the default string containing the list of characters |
| 1026 | delimiting words. This is a reasonable default value that |
| 1027 | most languages should be able to use. */ |
| 1028 | |
| 1029 | char * |
| 1030 | default_word_break_characters (void) |
| 1031 | { |
| 1032 | return " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-"; |
| 1033 | } |
| 1034 | |
| 1035 | /* Print the index of array elements using the C99 syntax. */ |
| 1036 | |
| 1037 | void |
| 1038 | default_print_array_index (struct value *index_value, struct ui_file *stream, |
| 1039 | const struct value_print_options *options) |
| 1040 | { |
| 1041 | fprintf_filtered (stream, "["); |
| 1042 | LA_VALUE_PRINT (index_value, stream, options); |
| 1043 | fprintf_filtered (stream, "] = "); |
| 1044 | } |
| 1045 | |
| 1046 | /* Define the language that is no language. */ |
| 1047 | |
| 1048 | static int |
| 1049 | unk_lang_parser (void) |
| 1050 | { |
| 1051 | return 1; |
| 1052 | } |
| 1053 | |
| 1054 | static void |
| 1055 | unk_lang_error (char *msg) |
| 1056 | { |
| 1057 | error (_("Attempted to parse an expression with unknown language")); |
| 1058 | } |
| 1059 | |
| 1060 | static void |
| 1061 | unk_lang_emit_char (int c, struct ui_file *stream, int quoter) |
| 1062 | { |
| 1063 | error (_("internal error - unimplemented function unk_lang_emit_char called.")); |
| 1064 | } |
| 1065 | |
| 1066 | static void |
| 1067 | unk_lang_printchar (int c, struct ui_file *stream) |
| 1068 | { |
| 1069 | error (_("internal error - unimplemented function unk_lang_printchar called.")); |
| 1070 | } |
| 1071 | |
| 1072 | static void |
| 1073 | unk_lang_printstr (struct ui_file *stream, const gdb_byte *string, |
| 1074 | unsigned int length, int width, int force_ellipses, |
| 1075 | const struct value_print_options *options) |
| 1076 | { |
| 1077 | error (_("internal error - unimplemented function unk_lang_printstr called.")); |
| 1078 | } |
| 1079 | |
| 1080 | static void |
| 1081 | unk_lang_print_type (struct type *type, char *varstring, struct ui_file *stream, |
| 1082 | int show, int level) |
| 1083 | { |
| 1084 | error (_("internal error - unimplemented function unk_lang_print_type called.")); |
| 1085 | } |
| 1086 | |
| 1087 | static int |
| 1088 | unk_lang_val_print (struct type *type, const gdb_byte *valaddr, |
| 1089 | int embedded_offset, CORE_ADDR address, |
| 1090 | struct ui_file *stream, int recurse, |
| 1091 | const struct value_print_options *options) |
| 1092 | { |
| 1093 | error (_("internal error - unimplemented function unk_lang_val_print called.")); |
| 1094 | } |
| 1095 | |
| 1096 | static int |
| 1097 | unk_lang_value_print (struct value *val, struct ui_file *stream, |
| 1098 | const struct value_print_options *options) |
| 1099 | { |
| 1100 | error (_("internal error - unimplemented function unk_lang_value_print called.")); |
| 1101 | } |
| 1102 | |
| 1103 | static CORE_ADDR unk_lang_trampoline (struct frame_info *frame, CORE_ADDR pc) |
| 1104 | { |
| 1105 | return 0; |
| 1106 | } |
| 1107 | |
| 1108 | /* Unknown languages just use the cplus demangler. */ |
| 1109 | static char *unk_lang_demangle (const char *mangled, int options) |
| 1110 | { |
| 1111 | return cplus_demangle (mangled, options); |
| 1112 | } |
| 1113 | |
| 1114 | static char *unk_lang_class_name (const char *mangled) |
| 1115 | { |
| 1116 | return NULL; |
| 1117 | } |
| 1118 | |
| 1119 | static const struct op_print unk_op_print_tab[] = |
| 1120 | { |
| 1121 | {NULL, OP_NULL, PREC_NULL, 0} |
| 1122 | }; |
| 1123 | |
| 1124 | static void |
| 1125 | unknown_language_arch_info (struct gdbarch *gdbarch, |
| 1126 | struct language_arch_info *lai) |
| 1127 | { |
| 1128 | lai->string_char_type = builtin_type (gdbarch)->builtin_char; |
| 1129 | lai->bool_type_default = builtin_type (gdbarch)->builtin_int; |
| 1130 | lai->primitive_type_vector = GDBARCH_OBSTACK_CALLOC (gdbarch, 1, |
| 1131 | struct type *); |
| 1132 | } |
| 1133 | |
| 1134 | const struct language_defn unknown_language_defn = |
| 1135 | { |
| 1136 | "unknown", |
| 1137 | language_unknown, |
| 1138 | range_check_off, |
| 1139 | type_check_off, |
| 1140 | case_sensitive_on, |
| 1141 | array_row_major, |
| 1142 | macro_expansion_no, |
| 1143 | &exp_descriptor_standard, |
| 1144 | unk_lang_parser, |
| 1145 | unk_lang_error, |
| 1146 | null_post_parser, |
| 1147 | unk_lang_printchar, /* Print character constant */ |
| 1148 | unk_lang_printstr, |
| 1149 | unk_lang_emit_char, |
| 1150 | unk_lang_print_type, /* Print a type using appropriate syntax */ |
| 1151 | default_print_typedef, /* Print a typedef using appropriate syntax */ |
| 1152 | unk_lang_val_print, /* Print a value using appropriate syntax */ |
| 1153 | unk_lang_value_print, /* Print a top-level value */ |
| 1154 | unk_lang_trampoline, /* Language specific skip_trampoline */ |
| 1155 | "this", /* name_of_this */ |
| 1156 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 1157 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
| 1158 | unk_lang_demangle, /* Language specific symbol demangler */ |
| 1159 | unk_lang_class_name, /* Language specific class_name_from_physname */ |
| 1160 | unk_op_print_tab, /* expression operators for printing */ |
| 1161 | 1, /* c-style arrays */ |
| 1162 | 0, /* String lower bound */ |
| 1163 | default_word_break_characters, |
| 1164 | default_make_symbol_completion_list, |
| 1165 | unknown_language_arch_info, /* la_language_arch_info. */ |
| 1166 | default_print_array_index, |
| 1167 | default_pass_by_reference, |
| 1168 | LANG_MAGIC |
| 1169 | }; |
| 1170 | |
| 1171 | /* These two structs define fake entries for the "local" and "auto" options. */ |
| 1172 | const struct language_defn auto_language_defn = |
| 1173 | { |
| 1174 | "auto", |
| 1175 | language_auto, |
| 1176 | range_check_off, |
| 1177 | type_check_off, |
| 1178 | case_sensitive_on, |
| 1179 | array_row_major, |
| 1180 | macro_expansion_no, |
| 1181 | &exp_descriptor_standard, |
| 1182 | unk_lang_parser, |
| 1183 | unk_lang_error, |
| 1184 | null_post_parser, |
| 1185 | unk_lang_printchar, /* Print character constant */ |
| 1186 | unk_lang_printstr, |
| 1187 | unk_lang_emit_char, |
| 1188 | unk_lang_print_type, /* Print a type using appropriate syntax */ |
| 1189 | default_print_typedef, /* Print a typedef using appropriate syntax */ |
| 1190 | unk_lang_val_print, /* Print a value using appropriate syntax */ |
| 1191 | unk_lang_value_print, /* Print a top-level value */ |
| 1192 | unk_lang_trampoline, /* Language specific skip_trampoline */ |
| 1193 | "this", /* name_of_this */ |
| 1194 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 1195 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
| 1196 | unk_lang_demangle, /* Language specific symbol demangler */ |
| 1197 | unk_lang_class_name, /* Language specific class_name_from_physname */ |
| 1198 | unk_op_print_tab, /* expression operators for printing */ |
| 1199 | 1, /* c-style arrays */ |
| 1200 | 0, /* String lower bound */ |
| 1201 | default_word_break_characters, |
| 1202 | default_make_symbol_completion_list, |
| 1203 | unknown_language_arch_info, /* la_language_arch_info. */ |
| 1204 | default_print_array_index, |
| 1205 | default_pass_by_reference, |
| 1206 | LANG_MAGIC |
| 1207 | }; |
| 1208 | |
| 1209 | const struct language_defn local_language_defn = |
| 1210 | { |
| 1211 | "local", |
| 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 class_name_from_physname */ |
| 1235 | unk_op_print_tab, /* expression operators for printing */ |
| 1236 | 1, /* c-style arrays */ |
| 1237 | 0, /* String lower bound */ |
| 1238 | default_word_break_characters, |
| 1239 | default_make_symbol_completion_list, |
| 1240 | unknown_language_arch_info, /* la_language_arch_info. */ |
| 1241 | default_print_array_index, |
| 1242 | default_pass_by_reference, |
| 1243 | LANG_MAGIC |
| 1244 | }; |
| 1245 | \f |
| 1246 | /* Per-architecture language information. */ |
| 1247 | |
| 1248 | static struct gdbarch_data *language_gdbarch_data; |
| 1249 | |
| 1250 | struct language_gdbarch |
| 1251 | { |
| 1252 | /* A vector of per-language per-architecture info. Indexed by "enum |
| 1253 | language". */ |
| 1254 | struct language_arch_info arch_info[nr_languages]; |
| 1255 | }; |
| 1256 | |
| 1257 | static void * |
| 1258 | language_gdbarch_post_init (struct gdbarch *gdbarch) |
| 1259 | { |
| 1260 | struct language_gdbarch *l; |
| 1261 | int i; |
| 1262 | |
| 1263 | l = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct language_gdbarch); |
| 1264 | for (i = 0; i < languages_size; i++) |
| 1265 | { |
| 1266 | if (languages[i] != NULL |
| 1267 | && languages[i]->la_language_arch_info != NULL) |
| 1268 | languages[i]->la_language_arch_info |
| 1269 | (gdbarch, l->arch_info + languages[i]->la_language); |
| 1270 | } |
| 1271 | return l; |
| 1272 | } |
| 1273 | |
| 1274 | struct type * |
| 1275 | language_string_char_type (const struct language_defn *la, |
| 1276 | struct gdbarch *gdbarch) |
| 1277 | { |
| 1278 | struct language_gdbarch *ld = gdbarch_data (gdbarch, |
| 1279 | language_gdbarch_data); |
| 1280 | return ld->arch_info[la->la_language].string_char_type; |
| 1281 | } |
| 1282 | |
| 1283 | struct type * |
| 1284 | language_bool_type (const struct language_defn *la, |
| 1285 | struct gdbarch *gdbarch) |
| 1286 | { |
| 1287 | struct language_gdbarch *ld = gdbarch_data (gdbarch, |
| 1288 | language_gdbarch_data); |
| 1289 | |
| 1290 | if (ld->arch_info[la->la_language].bool_type_symbol) |
| 1291 | { |
| 1292 | struct symbol *sym; |
| 1293 | sym = lookup_symbol (ld->arch_info[la->la_language].bool_type_symbol, |
| 1294 | NULL, VAR_DOMAIN, NULL); |
| 1295 | if (sym) |
| 1296 | { |
| 1297 | struct type *type = SYMBOL_TYPE (sym); |
| 1298 | if (type && TYPE_CODE (type) == TYPE_CODE_BOOL) |
| 1299 | return type; |
| 1300 | } |
| 1301 | } |
| 1302 | |
| 1303 | return ld->arch_info[la->la_language].bool_type_default; |
| 1304 | } |
| 1305 | |
| 1306 | struct type * |
| 1307 | language_lookup_primitive_type_by_name (const struct language_defn *la, |
| 1308 | struct gdbarch *gdbarch, |
| 1309 | const char *name) |
| 1310 | { |
| 1311 | struct language_gdbarch *ld = gdbarch_data (gdbarch, |
| 1312 | language_gdbarch_data); |
| 1313 | struct type *const *p; |
| 1314 | for (p = ld->arch_info[la->la_language].primitive_type_vector; |
| 1315 | (*p) != NULL; |
| 1316 | p++) |
| 1317 | { |
| 1318 | if (strcmp (TYPE_NAME (*p), name) == 0) |
| 1319 | return (*p); |
| 1320 | } |
| 1321 | return (NULL); |
| 1322 | } |
| 1323 | |
| 1324 | /* Initialize the language routines */ |
| 1325 | |
| 1326 | void |
| 1327 | _initialize_language (void) |
| 1328 | { |
| 1329 | struct cmd_list_element *set, *show; |
| 1330 | |
| 1331 | language_gdbarch_data |
| 1332 | = gdbarch_data_register_post_init (language_gdbarch_post_init); |
| 1333 | |
| 1334 | /* GDB commands for language specific stuff */ |
| 1335 | |
| 1336 | /* FIXME: cagney/2005-02-20: This should be implemented using an |
| 1337 | enum. */ |
| 1338 | add_setshow_string_noescape_cmd ("language", class_support, &language, _("\ |
| 1339 | Set the current source language."), _("\ |
| 1340 | Show the current source language."), NULL, |
| 1341 | set_language_command, |
| 1342 | show_language_command, |
| 1343 | &setlist, &showlist); |
| 1344 | |
| 1345 | add_prefix_cmd ("check", no_class, set_check, |
| 1346 | _("Set the status of the type/range checker."), |
| 1347 | &setchecklist, "set check ", 0, &setlist); |
| 1348 | add_alias_cmd ("c", "check", no_class, 1, &setlist); |
| 1349 | add_alias_cmd ("ch", "check", no_class, 1, &setlist); |
| 1350 | |
| 1351 | add_prefix_cmd ("check", no_class, show_check, |
| 1352 | _("Show the status of the type/range checker."), |
| 1353 | &showchecklist, "show check ", 0, &showlist); |
| 1354 | add_alias_cmd ("c", "check", no_class, 1, &showlist); |
| 1355 | add_alias_cmd ("ch", "check", no_class, 1, &showlist); |
| 1356 | |
| 1357 | /* FIXME: cagney/2005-02-20: This should be implemented using an |
| 1358 | enum. */ |
| 1359 | add_setshow_string_noescape_cmd ("type", class_support, &type, _("\ |
| 1360 | Set type checking. (on/warn/off/auto)"), _("\ |
| 1361 | Show type checking. (on/warn/off/auto)"), NULL, |
| 1362 | set_type_command, |
| 1363 | show_type_command, |
| 1364 | &setchecklist, &showchecklist); |
| 1365 | |
| 1366 | /* FIXME: cagney/2005-02-20: This should be implemented using an |
| 1367 | enum. */ |
| 1368 | add_setshow_string_noescape_cmd ("range", class_support, &range, _("\ |
| 1369 | Set range checking. (on/warn/off/auto)"), _("\ |
| 1370 | Show range checking. (on/warn/off/auto)"), NULL, |
| 1371 | set_range_command, |
| 1372 | show_range_command, |
| 1373 | &setchecklist, &showchecklist); |
| 1374 | |
| 1375 | /* FIXME: cagney/2005-02-20: This should be implemented using an |
| 1376 | enum. */ |
| 1377 | add_setshow_string_noescape_cmd ("case-sensitive", class_support, |
| 1378 | &case_sensitive, _("\ |
| 1379 | Set case sensitivity in name search. (on/off/auto)"), _("\ |
| 1380 | Show case sensitivity in name search. (on/off/auto)"), _("\ |
| 1381 | For Fortran the default is off; for other languages the default is on."), |
| 1382 | set_case_command, |
| 1383 | show_case_command, |
| 1384 | &setlist, &showlist); |
| 1385 | |
| 1386 | add_language (&unknown_language_defn); |
| 1387 | add_language (&local_language_defn); |
| 1388 | add_language (&auto_language_defn); |
| 1389 | |
| 1390 | language = savestring ("auto", strlen ("auto")); |
| 1391 | type = savestring ("auto", strlen ("auto")); |
| 1392 | range = savestring ("auto", strlen ("auto")); |
| 1393 | case_sensitive = savestring ("auto",strlen ("auto")); |
| 1394 | |
| 1395 | /* Have the above take effect */ |
| 1396 | set_language (language_auto); |
| 1397 | } |