| 1 | /* Multiple source language support for GDB. |
| 2 | Copyright 1991, 1992 Free Software Foundation, Inc. |
| 3 | Contributed by the Department of Computer Science at the State University |
| 4 | of New York at Buffalo. |
| 5 | |
| 6 | This file is part of GDB. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 2 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 21 | Boston, MA 02111-1307, USA. */ |
| 22 | |
| 23 | /* This file contains functions that return things that are specific |
| 24 | to languages. Each function should examine current_language if necessary, |
| 25 | and return the appropriate result. */ |
| 26 | |
| 27 | /* FIXME: Most of these would be better organized as macros which |
| 28 | return data out of a "language-specific" struct pointer that is set |
| 29 | whenever the working language changes. That would be a lot faster. */ |
| 30 | |
| 31 | #include "defs.h" |
| 32 | #include <ctype.h> |
| 33 | #include "gdb_string.h" |
| 34 | |
| 35 | #include "symtab.h" |
| 36 | #include "gdbtypes.h" |
| 37 | #include "value.h" |
| 38 | #include "gdbcmd.h" |
| 39 | #include "frame.h" |
| 40 | #include "expression.h" |
| 41 | #include "language.h" |
| 42 | #include "target.h" |
| 43 | #include "parser-defs.h" |
| 44 | |
| 45 | extern void _initialize_language PARAMS ((void)); |
| 46 | |
| 47 | static void |
| 48 | show_language_command PARAMS ((char *, int)); |
| 49 | |
| 50 | static void |
| 51 | set_language_command PARAMS ((char *, int)); |
| 52 | |
| 53 | static void |
| 54 | show_type_command PARAMS ((char *, int)); |
| 55 | |
| 56 | static void |
| 57 | set_type_command PARAMS ((char *, int)); |
| 58 | |
| 59 | static void |
| 60 | show_range_command PARAMS ((char *, int)); |
| 61 | |
| 62 | static void |
| 63 | set_range_command PARAMS ((char *, int)); |
| 64 | |
| 65 | static void |
| 66 | set_range_str PARAMS ((void)); |
| 67 | |
| 68 | static void |
| 69 | set_type_str PARAMS ((void)); |
| 70 | |
| 71 | static void |
| 72 | set_lang_str PARAMS ((void)); |
| 73 | |
| 74 | static void |
| 75 | unk_lang_error PARAMS ((char *)); |
| 76 | |
| 77 | static int |
| 78 | unk_lang_parser PARAMS ((void)); |
| 79 | |
| 80 | static void |
| 81 | show_check PARAMS ((char *, int)); |
| 82 | |
| 83 | static void |
| 84 | set_check PARAMS ((char *, int)); |
| 85 | |
| 86 | static void |
| 87 | set_type_range PARAMS ((void)); |
| 88 | |
| 89 | static void |
| 90 | unk_lang_emit_char PARAMS ((int c, GDB_FILE * stream, int quoter)); |
| 91 | |
| 92 | static void |
| 93 | unk_lang_printchar PARAMS ((int c, GDB_FILE * stream)); |
| 94 | |
| 95 | static void |
| 96 | unk_lang_printstr PARAMS ((GDB_FILE * stream, char *string, unsigned int length, int width, int force_ellipses)); |
| 97 | |
| 98 | static struct type * |
| 99 | unk_lang_create_fundamental_type PARAMS ((struct objfile *, int)); |
| 100 | |
| 101 | static void |
| 102 | unk_lang_print_type PARAMS ((struct type *, char *, GDB_FILE *, int, int)); |
| 103 | |
| 104 | static int |
| 105 | unk_lang_val_print PARAMS ((struct type *, char *, int, CORE_ADDR, GDB_FILE *, |
| 106 | int, int, int, enum val_prettyprint)); |
| 107 | |
| 108 | static int |
| 109 | unk_lang_value_print PARAMS ((value_ptr, GDB_FILE *, int, enum val_prettyprint)); |
| 110 | |
| 111 | /* Forward declaration */ |
| 112 | extern const struct language_defn unknown_language_defn; |
| 113 | extern char *warning_pre_print; |
| 114 | |
| 115 | /* The current (default at startup) state of type and range checking. |
| 116 | (If the modes are set to "auto", though, these are changed based |
| 117 | on the default language at startup, and then again based on the |
| 118 | language of the first source file. */ |
| 119 | |
| 120 | enum range_mode range_mode = range_mode_auto; |
| 121 | enum range_check range_check = range_check_off; |
| 122 | enum type_mode type_mode = type_mode_auto; |
| 123 | enum type_check type_check = type_check_off; |
| 124 | |
| 125 | /* The current language and language_mode (see language.h) */ |
| 126 | |
| 127 | const struct language_defn *current_language = &unknown_language_defn; |
| 128 | enum language_mode language_mode = language_mode_auto; |
| 129 | |
| 130 | /* The language that the user expects to be typing in (the language |
| 131 | of main(), or the last language we notified them about, or C). */ |
| 132 | |
| 133 | const struct language_defn *expected_language; |
| 134 | |
| 135 | /* The list of supported languages. The list itself is malloc'd. */ |
| 136 | |
| 137 | static const struct language_defn **languages; |
| 138 | static unsigned languages_size; |
| 139 | static unsigned languages_allocsize; |
| 140 | #define DEFAULT_ALLOCSIZE 4 |
| 141 | |
| 142 | /* The "set language/type/range" commands all put stuff in these |
| 143 | buffers. This is to make them work as set/show commands. The |
| 144 | user's string is copied here, then the set_* commands look at |
| 145 | them and update them to something that looks nice when it is |
| 146 | printed out. */ |
| 147 | |
| 148 | static char *language; |
| 149 | static char *type; |
| 150 | static char *range; |
| 151 | |
| 152 | /* Warning issued when current_language and the language of the current |
| 153 | frame do not match. */ |
| 154 | char lang_frame_mismatch_warn[] = |
| 155 | "Warning: the current language does not match this frame."; |
| 156 | \f |
| 157 | |
| 158 | /* This page contains the functions corresponding to GDB commands |
| 159 | and their helpers. */ |
| 160 | |
| 161 | /* Show command. Display a warning if the language set |
| 162 | does not match the frame. */ |
| 163 | static void |
| 164 | show_language_command (ignore, from_tty) |
| 165 | char *ignore; |
| 166 | int from_tty; |
| 167 | { |
| 168 | enum language flang; /* The language of the current frame */ |
| 169 | |
| 170 | flang = get_frame_language (); |
| 171 | if (flang != language_unknown && |
| 172 | language_mode == language_mode_manual && |
| 173 | current_language->la_language != flang) |
| 174 | printf_filtered ("%s\n", lang_frame_mismatch_warn); |
| 175 | } |
| 176 | |
| 177 | /* Set command. Change the current working language. */ |
| 178 | static void |
| 179 | set_language_command (ignore, from_tty) |
| 180 | char *ignore; |
| 181 | int from_tty; |
| 182 | { |
| 183 | int i; |
| 184 | enum language flang; |
| 185 | char *err_lang; |
| 186 | |
| 187 | if (!language || !language[0]) |
| 188 | { |
| 189 | printf_unfiltered ("The currently understood settings are:\n\n"); |
| 190 | printf_unfiltered ("local or auto Automatic setting based on source file\n"); |
| 191 | |
| 192 | for (i = 0; i < languages_size; ++i) |
| 193 | { |
| 194 | /* Already dealt with these above. */ |
| 195 | if (languages[i]->la_language == language_unknown |
| 196 | || languages[i]->la_language == language_auto) |
| 197 | continue; |
| 198 | |
| 199 | /* FIXME for now assume that the human-readable name is just |
| 200 | a capitalization of the internal name. */ |
| 201 | printf_unfiltered ("%-16s Use the %c%s language\n", |
| 202 | languages[i]->la_name, |
| 203 | /* Capitalize first letter of language |
| 204 | name. */ |
| 205 | toupper (languages[i]->la_name[0]), |
| 206 | languages[i]->la_name + 1); |
| 207 | } |
| 208 | /* Restore the silly string. */ |
| 209 | set_language (current_language->la_language); |
| 210 | return; |
| 211 | } |
| 212 | |
| 213 | /* Search the list of languages for a match. */ |
| 214 | for (i = 0; i < languages_size; i++) |
| 215 | { |
| 216 | if (STREQ (languages[i]->la_name, language)) |
| 217 | { |
| 218 | /* Found it! Go into manual mode, and use this language. */ |
| 219 | if (languages[i]->la_language == language_auto) |
| 220 | { |
| 221 | /* Enter auto mode. Set to the current frame's language, if known. */ |
| 222 | language_mode = language_mode_auto; |
| 223 | flang = get_frame_language (); |
| 224 | if (flang != language_unknown) |
| 225 | set_language (flang); |
| 226 | expected_language = current_language; |
| 227 | return; |
| 228 | } |
| 229 | else |
| 230 | { |
| 231 | /* Enter manual mode. Set the specified language. */ |
| 232 | language_mode = language_mode_manual; |
| 233 | current_language = languages[i]; |
| 234 | set_type_range (); |
| 235 | set_lang_str (); |
| 236 | expected_language = current_language; |
| 237 | return; |
| 238 | } |
| 239 | } |
| 240 | } |
| 241 | |
| 242 | /* Reset the language (esp. the global string "language") to the |
| 243 | correct values. */ |
| 244 | err_lang = savestring (language, strlen (language)); |
| 245 | make_cleanup (free, err_lang); /* Free it after error */ |
| 246 | set_language (current_language->la_language); |
| 247 | error ("Unknown language `%s'.", err_lang); |
| 248 | } |
| 249 | |
| 250 | /* Show command. Display a warning if the type setting does |
| 251 | not match the current language. */ |
| 252 | static void |
| 253 | show_type_command (ignore, from_tty) |
| 254 | char *ignore; |
| 255 | int from_tty; |
| 256 | { |
| 257 | if (type_check != current_language->la_type_check) |
| 258 | printf_unfiltered ( |
| 259 | "Warning: the current type check setting does not match the language.\n"); |
| 260 | } |
| 261 | |
| 262 | /* Set command. Change the setting for type checking. */ |
| 263 | static void |
| 264 | set_type_command (ignore, from_tty) |
| 265 | char *ignore; |
| 266 | int from_tty; |
| 267 | { |
| 268 | if (STREQ (type, "on")) |
| 269 | { |
| 270 | type_check = type_check_on; |
| 271 | type_mode = type_mode_manual; |
| 272 | } |
| 273 | else if (STREQ (type, "warn")) |
| 274 | { |
| 275 | type_check = type_check_warn; |
| 276 | type_mode = type_mode_manual; |
| 277 | } |
| 278 | else if (STREQ (type, "off")) |
| 279 | { |
| 280 | type_check = type_check_off; |
| 281 | type_mode = type_mode_manual; |
| 282 | } |
| 283 | else if (STREQ (type, "auto")) |
| 284 | { |
| 285 | type_mode = type_mode_auto; |
| 286 | set_type_range (); |
| 287 | /* Avoid hitting the set_type_str call below. We |
| 288 | did it in set_type_range. */ |
| 289 | return; |
| 290 | } |
| 291 | set_type_str (); |
| 292 | show_type_command ((char *) NULL, from_tty); |
| 293 | } |
| 294 | |
| 295 | /* Show command. Display a warning if the range setting does |
| 296 | not match the current language. */ |
| 297 | static void |
| 298 | show_range_command (ignore, from_tty) |
| 299 | char *ignore; |
| 300 | int from_tty; |
| 301 | { |
| 302 | |
| 303 | if (range_check != current_language->la_range_check) |
| 304 | printf_unfiltered ( |
| 305 | "Warning: the current range check setting does not match the language.\n"); |
| 306 | } |
| 307 | |
| 308 | /* Set command. Change the setting for range checking. */ |
| 309 | static void |
| 310 | set_range_command (ignore, from_tty) |
| 311 | char *ignore; |
| 312 | int from_tty; |
| 313 | { |
| 314 | if (STREQ (range, "on")) |
| 315 | { |
| 316 | range_check = range_check_on; |
| 317 | range_mode = range_mode_manual; |
| 318 | } |
| 319 | else if (STREQ (range, "warn")) |
| 320 | { |
| 321 | range_check = range_check_warn; |
| 322 | range_mode = range_mode_manual; |
| 323 | } |
| 324 | else if (STREQ (range, "off")) |
| 325 | { |
| 326 | range_check = range_check_off; |
| 327 | range_mode = range_mode_manual; |
| 328 | } |
| 329 | else if (STREQ (range, "auto")) |
| 330 | { |
| 331 | range_mode = range_mode_auto; |
| 332 | set_type_range (); |
| 333 | /* Avoid hitting the set_range_str call below. We |
| 334 | did it in set_type_range. */ |
| 335 | return; |
| 336 | } |
| 337 | set_range_str (); |
| 338 | show_range_command ((char *) 0, from_tty); |
| 339 | } |
| 340 | |
| 341 | /* Set the status of range and type checking based on |
| 342 | the current modes and the current language. |
| 343 | If SHOW is non-zero, then print out the current language, |
| 344 | type and range checking status. */ |
| 345 | static void |
| 346 | set_type_range () |
| 347 | { |
| 348 | |
| 349 | if (range_mode == range_mode_auto) |
| 350 | range_check = current_language->la_range_check; |
| 351 | |
| 352 | if (type_mode == type_mode_auto) |
| 353 | type_check = current_language->la_type_check; |
| 354 | |
| 355 | set_type_str (); |
| 356 | set_range_str (); |
| 357 | } |
| 358 | |
| 359 | /* Set current language to (enum language) LANG. Returns previous language. */ |
| 360 | |
| 361 | enum language |
| 362 | set_language (lang) |
| 363 | enum language lang; |
| 364 | { |
| 365 | int i; |
| 366 | enum language prev_language; |
| 367 | |
| 368 | prev_language = current_language->la_language; |
| 369 | |
| 370 | for (i = 0; i < languages_size; i++) |
| 371 | { |
| 372 | if (languages[i]->la_language == lang) |
| 373 | { |
| 374 | current_language = languages[i]; |
| 375 | set_type_range (); |
| 376 | set_lang_str (); |
| 377 | break; |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | return prev_language; |
| 382 | } |
| 383 | \f |
| 384 | /* This page contains functions that update the global vars |
| 385 | language, type and range. */ |
| 386 | static void |
| 387 | set_lang_str () |
| 388 | { |
| 389 | char *prefix = ""; |
| 390 | |
| 391 | free (language); |
| 392 | if (language_mode == language_mode_auto) |
| 393 | prefix = "auto; currently "; |
| 394 | |
| 395 | language = concat (prefix, current_language->la_name, NULL); |
| 396 | } |
| 397 | |
| 398 | static void |
| 399 | set_type_str () |
| 400 | { |
| 401 | char *tmp, *prefix = ""; |
| 402 | |
| 403 | free (type); |
| 404 | if (type_mode == type_mode_auto) |
| 405 | prefix = "auto; currently "; |
| 406 | |
| 407 | switch (type_check) |
| 408 | { |
| 409 | case type_check_on: |
| 410 | tmp = "on"; |
| 411 | break; |
| 412 | case type_check_off: |
| 413 | tmp = "off"; |
| 414 | break; |
| 415 | case type_check_warn: |
| 416 | tmp = "warn"; |
| 417 | break; |
| 418 | default: |
| 419 | error ("Unrecognized type check setting."); |
| 420 | } |
| 421 | |
| 422 | type = concat (prefix, tmp, NULL); |
| 423 | } |
| 424 | |
| 425 | static void |
| 426 | set_range_str () |
| 427 | { |
| 428 | char *tmp, *pref = ""; |
| 429 | |
| 430 | free (range); |
| 431 | if (range_mode == range_mode_auto) |
| 432 | pref = "auto; currently "; |
| 433 | |
| 434 | switch (range_check) |
| 435 | { |
| 436 | case range_check_on: |
| 437 | tmp = "on"; |
| 438 | break; |
| 439 | case range_check_off: |
| 440 | tmp = "off"; |
| 441 | break; |
| 442 | case range_check_warn: |
| 443 | tmp = "warn"; |
| 444 | break; |
| 445 | default: |
| 446 | error ("Unrecognized range check setting."); |
| 447 | } |
| 448 | |
| 449 | range = concat (pref, tmp, NULL); |
| 450 | } |
| 451 | |
| 452 | |
| 453 | /* Print out the current language settings: language, range and |
| 454 | type checking. If QUIETLY, print only what has changed. */ |
| 455 | |
| 456 | void |
| 457 | language_info (quietly) |
| 458 | int quietly; |
| 459 | { |
| 460 | if (quietly && expected_language == current_language) |
| 461 | return; |
| 462 | |
| 463 | expected_language = current_language; |
| 464 | printf_unfiltered ("Current language: %s\n", language); |
| 465 | show_language_command ((char *) 0, 1); |
| 466 | |
| 467 | if (!quietly) |
| 468 | { |
| 469 | printf_unfiltered ("Type checking: %s\n", type); |
| 470 | show_type_command ((char *) 0, 1); |
| 471 | printf_unfiltered ("Range checking: %s\n", range); |
| 472 | show_range_command ((char *) 0, 1); |
| 473 | } |
| 474 | } |
| 475 | \f |
| 476 | /* Return the result of a binary operation. */ |
| 477 | |
| 478 | #if 0 /* Currently unused */ |
| 479 | |
| 480 | struct type * |
| 481 | binop_result_type (v1, v2) |
| 482 | value_ptr v1, v2; |
| 483 | { |
| 484 | int size, uns; |
| 485 | struct type *t1 = check_typedef (VALUE_TYPE (v1)); |
| 486 | struct type *t2 = check_typedef (VALUE_TYPE (v2)); |
| 487 | |
| 488 | int l1 = TYPE_LENGTH (t1); |
| 489 | int l2 = TYPE_LENGTH (t2); |
| 490 | |
| 491 | switch (current_language->la_language) |
| 492 | { |
| 493 | case language_c: |
| 494 | case language_cplus: |
| 495 | if (TYPE_CODE (t1) == TYPE_CODE_FLT) |
| 496 | return TYPE_CODE (t2) == TYPE_CODE_FLT && l2 > l1 ? |
| 497 | VALUE_TYPE (v2) : VALUE_TYPE (v1); |
| 498 | else if (TYPE_CODE (t2) == TYPE_CODE_FLT) |
| 499 | return TYPE_CODE (t1) == TYPE_CODE_FLT && l1 > l2 ? |
| 500 | VALUE_TYPE (v1) : VALUE_TYPE (v2); |
| 501 | else if (TYPE_UNSIGNED (t1) && l1 > l2) |
| 502 | return VALUE_TYPE (v1); |
| 503 | else if (TYPE_UNSIGNED (t2) && l2 > l1) |
| 504 | return VALUE_TYPE (v2); |
| 505 | else /* Both are signed. Result is the 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 | case language_chill: |
| 514 | error ("Missing Chill support in function binop_result_check."); /*FIXME */ |
| 515 | } |
| 516 | abort (); |
| 517 | return (struct type *) 0; /* For lint */ |
| 518 | } |
| 519 | |
| 520 | #endif /* 0 */ |
| 521 | \f |
| 522 | |
| 523 | /* This page contains functions that return format strings for |
| 524 | printf for printing out numbers in different formats */ |
| 525 | |
| 526 | /* Returns the appropriate printf format for hexadecimal |
| 527 | numbers. */ |
| 528 | char * |
| 529 | local_hex_format_custom (pre) |
| 530 | char *pre; |
| 531 | { |
| 532 | static char form[50]; |
| 533 | |
| 534 | strcpy (form, local_hex_format_prefix ()); |
| 535 | strcat (form, "%"); |
| 536 | strcat (form, pre); |
| 537 | strcat (form, local_hex_format_specifier ()); |
| 538 | strcat (form, local_hex_format_suffix ()); |
| 539 | return form; |
| 540 | } |
| 541 | |
| 542 | /* Converts a number to hexadecimal and stores it in a static |
| 543 | string. Returns a pointer to this string. */ |
| 544 | char * |
| 545 | local_hex_string (num) |
| 546 | unsigned long num; |
| 547 | { |
| 548 | static char res[50]; |
| 549 | |
| 550 | sprintf (res, local_hex_format (), num); |
| 551 | return res; |
| 552 | } |
| 553 | |
| 554 | /* Converts a number to custom hexadecimal and stores it in a static |
| 555 | string. Returns a pointer to this string. */ |
| 556 | char * |
| 557 | local_hex_string_custom (num, pre) |
| 558 | unsigned long num; |
| 559 | char *pre; |
| 560 | { |
| 561 | static char res[50]; |
| 562 | |
| 563 | sprintf (res, local_hex_format_custom (pre), num); |
| 564 | return res; |
| 565 | } |
| 566 | |
| 567 | /* Returns the appropriate printf format for octal |
| 568 | numbers. */ |
| 569 | char * |
| 570 | local_octal_format_custom (pre) |
| 571 | char *pre; |
| 572 | { |
| 573 | static char form[50]; |
| 574 | |
| 575 | strcpy (form, local_octal_format_prefix ()); |
| 576 | strcat (form, "%"); |
| 577 | strcat (form, pre); |
| 578 | strcat (form, local_octal_format_specifier ()); |
| 579 | strcat (form, local_octal_format_suffix ()); |
| 580 | return form; |
| 581 | } |
| 582 | |
| 583 | /* Returns the appropriate printf format for decimal numbers. */ |
| 584 | char * |
| 585 | local_decimal_format_custom (pre) |
| 586 | char *pre; |
| 587 | { |
| 588 | static char form[50]; |
| 589 | |
| 590 | strcpy (form, local_decimal_format_prefix ()); |
| 591 | strcat (form, "%"); |
| 592 | strcat (form, pre); |
| 593 | strcat (form, local_decimal_format_specifier ()); |
| 594 | strcat (form, local_decimal_format_suffix ()); |
| 595 | return form; |
| 596 | } |
| 597 | \f |
| 598 | #if 0 |
| 599 | /* This page contains functions that are used in type/range checking. |
| 600 | They all return zero if the type/range check fails. |
| 601 | |
| 602 | It is hoped that these will make extending GDB to parse different |
| 603 | languages a little easier. These are primarily used in eval.c when |
| 604 | evaluating expressions and making sure that their types are correct. |
| 605 | Instead of having a mess of conjucted/disjuncted expressions in an "if", |
| 606 | the ideas of type can be wrapped up in the following functions. |
| 607 | |
| 608 | Note that some of them are not currently dependent upon which language |
| 609 | is currently being parsed. For example, floats are the same in |
| 610 | C and Modula-2 (ie. the only floating point type has TYPE_CODE of |
| 611 | TYPE_CODE_FLT), while booleans are different. */ |
| 612 | |
| 613 | /* Returns non-zero if its argument is a simple type. This is the same for |
| 614 | both Modula-2 and for C. In the C case, TYPE_CODE_CHAR will never occur, |
| 615 | and thus will never cause the failure of the test. */ |
| 616 | int |
| 617 | simple_type (type) |
| 618 | struct type *type; |
| 619 | { |
| 620 | CHECK_TYPEDEF (type); |
| 621 | switch (TYPE_CODE (type)) |
| 622 | { |
| 623 | case TYPE_CODE_INT: |
| 624 | case TYPE_CODE_CHAR: |
| 625 | case TYPE_CODE_ENUM: |
| 626 | case TYPE_CODE_FLT: |
| 627 | case TYPE_CODE_RANGE: |
| 628 | case TYPE_CODE_BOOL: |
| 629 | return 1; |
| 630 | |
| 631 | default: |
| 632 | return 0; |
| 633 | } |
| 634 | } |
| 635 | |
| 636 | /* Returns non-zero if its argument is of an ordered type. |
| 637 | An ordered type is one in which the elements can be tested for the |
| 638 | properties of "greater than", "less than", etc, or for which the |
| 639 | operations "increment" or "decrement" make sense. */ |
| 640 | int |
| 641 | ordered_type (type) |
| 642 | struct type *type; |
| 643 | { |
| 644 | CHECK_TYPEDEF (type); |
| 645 | switch (TYPE_CODE (type)) |
| 646 | { |
| 647 | case TYPE_CODE_INT: |
| 648 | case TYPE_CODE_CHAR: |
| 649 | case TYPE_CODE_ENUM: |
| 650 | case TYPE_CODE_FLT: |
| 651 | case TYPE_CODE_RANGE: |
| 652 | return 1; |
| 653 | |
| 654 | default: |
| 655 | return 0; |
| 656 | } |
| 657 | } |
| 658 | |
| 659 | /* Returns non-zero if the two types are the same */ |
| 660 | int |
| 661 | same_type (arg1, arg2) |
| 662 | struct type *arg1, *arg2; |
| 663 | { |
| 664 | CHECK_TYPEDEF (type); |
| 665 | if (structured_type (arg1) ? !structured_type (arg2) : structured_type (arg2)) |
| 666 | /* One is structured and one isn't */ |
| 667 | return 0; |
| 668 | else if (structured_type (arg1) && structured_type (arg2)) |
| 669 | return arg1 == arg2; |
| 670 | else if (numeric_type (arg1) && numeric_type (arg2)) |
| 671 | return (TYPE_CODE (arg2) == TYPE_CODE (arg1)) && |
| 672 | (TYPE_UNSIGNED (arg1) == TYPE_UNSIGNED (arg2)) |
| 673 | ? 1 : 0; |
| 674 | else |
| 675 | return arg1 == arg2; |
| 676 | } |
| 677 | |
| 678 | /* Returns non-zero if the type is integral */ |
| 679 | int |
| 680 | integral_type (type) |
| 681 | struct type *type; |
| 682 | { |
| 683 | CHECK_TYPEDEF (type); |
| 684 | switch (current_language->la_language) |
| 685 | { |
| 686 | case language_c: |
| 687 | case language_cplus: |
| 688 | return (TYPE_CODE (type) != TYPE_CODE_INT) && |
| 689 | (TYPE_CODE (type) != TYPE_CODE_ENUM) ? 0 : 1; |
| 690 | case language_m2: |
| 691 | return TYPE_CODE (type) != TYPE_CODE_INT ? 0 : 1; |
| 692 | case language_chill: |
| 693 | error ("Missing Chill support in function integral_type."); /*FIXME */ |
| 694 | default: |
| 695 | error ("Language not supported."); |
| 696 | } |
| 697 | } |
| 698 | |
| 699 | /* Returns non-zero if the value is numeric */ |
| 700 | int |
| 701 | numeric_type (type) |
| 702 | struct type *type; |
| 703 | { |
| 704 | CHECK_TYPEDEF (type); |
| 705 | switch (TYPE_CODE (type)) |
| 706 | { |
| 707 | case TYPE_CODE_INT: |
| 708 | case TYPE_CODE_FLT: |
| 709 | return 1; |
| 710 | |
| 711 | default: |
| 712 | return 0; |
| 713 | } |
| 714 | } |
| 715 | |
| 716 | /* Returns non-zero if the value is a character type */ |
| 717 | int |
| 718 | character_type (type) |
| 719 | struct type *type; |
| 720 | { |
| 721 | CHECK_TYPEDEF (type); |
| 722 | switch (current_language->la_language) |
| 723 | { |
| 724 | case language_chill: |
| 725 | case language_m2: |
| 726 | return TYPE_CODE (type) != TYPE_CODE_CHAR ? 0 : 1; |
| 727 | |
| 728 | case language_c: |
| 729 | case language_cplus: |
| 730 | return (TYPE_CODE (type) == TYPE_CODE_INT) && |
| 731 | TYPE_LENGTH (type) == sizeof (char) |
| 732 | ? 1 : 0; |
| 733 | default: |
| 734 | return (0); |
| 735 | } |
| 736 | } |
| 737 | |
| 738 | /* Returns non-zero if the value is a string type */ |
| 739 | int |
| 740 | string_type (type) |
| 741 | struct type *type; |
| 742 | { |
| 743 | CHECK_TYPEDEF (type); |
| 744 | switch (current_language->la_language) |
| 745 | { |
| 746 | case language_chill: |
| 747 | case language_m2: |
| 748 | return TYPE_CODE (type) != TYPE_CODE_STRING ? 0 : 1; |
| 749 | |
| 750 | case language_c: |
| 751 | case language_cplus: |
| 752 | /* C does not have distinct string type. */ |
| 753 | return (0); |
| 754 | default: |
| 755 | return (0); |
| 756 | } |
| 757 | } |
| 758 | |
| 759 | /* Returns non-zero if the value is a boolean type */ |
| 760 | int |
| 761 | boolean_type (type) |
| 762 | struct type *type; |
| 763 | { |
| 764 | CHECK_TYPEDEF (type); |
| 765 | if (TYPE_CODE (type) == TYPE_CODE_BOOL) |
| 766 | return 1; |
| 767 | switch (current_language->la_language) |
| 768 | { |
| 769 | case language_c: |
| 770 | case language_cplus: |
| 771 | /* Might be more cleanly handled by having a TYPE_CODE_INT_NOT_BOOL |
| 772 | for CHILL and such languages, or a TYPE_CODE_INT_OR_BOOL for C. */ |
| 773 | if (TYPE_CODE (type) == TYPE_CODE_INT) |
| 774 | return 1; |
| 775 | default: |
| 776 | break; |
| 777 | } |
| 778 | return 0; |
| 779 | } |
| 780 | |
| 781 | /* Returns non-zero if the value is a floating-point type */ |
| 782 | int |
| 783 | float_type (type) |
| 784 | struct type *type; |
| 785 | { |
| 786 | CHECK_TYPEDEF (type); |
| 787 | return TYPE_CODE (type) == TYPE_CODE_FLT; |
| 788 | } |
| 789 | |
| 790 | /* Returns non-zero if the value is a pointer type */ |
| 791 | int |
| 792 | pointer_type (type) |
| 793 | struct type *type; |
| 794 | { |
| 795 | return TYPE_CODE (type) == TYPE_CODE_PTR || |
| 796 | TYPE_CODE (type) == TYPE_CODE_REF; |
| 797 | } |
| 798 | |
| 799 | /* Returns non-zero if the value is a structured type */ |
| 800 | int |
| 801 | structured_type (type) |
| 802 | struct type *type; |
| 803 | { |
| 804 | CHECK_TYPEDEF (type); |
| 805 | switch (current_language->la_language) |
| 806 | { |
| 807 | case language_c: |
| 808 | case language_cplus: |
| 809 | return (TYPE_CODE (type) == TYPE_CODE_STRUCT) || |
| 810 | (TYPE_CODE (type) == TYPE_CODE_UNION) || |
| 811 | (TYPE_CODE (type) == TYPE_CODE_ARRAY); |
| 812 | case language_m2: |
| 813 | return (TYPE_CODE (type) == TYPE_CODE_STRUCT) || |
| 814 | (TYPE_CODE (type) == TYPE_CODE_SET) || |
| 815 | (TYPE_CODE (type) == TYPE_CODE_ARRAY); |
| 816 | case language_chill: |
| 817 | error ("Missing Chill support in function structured_type."); /*FIXME */ |
| 818 | default: |
| 819 | return (0); |
| 820 | } |
| 821 | } |
| 822 | #endif |
| 823 | \f |
| 824 | struct type * |
| 825 | lang_bool_type () |
| 826 | { |
| 827 | struct symbol *sym; |
| 828 | struct type *type; |
| 829 | switch (current_language->la_language) |
| 830 | { |
| 831 | case language_chill: |
| 832 | return builtin_type_chill_bool; |
| 833 | case language_fortran: |
| 834 | sym = lookup_symbol ("logical", NULL, VAR_NAMESPACE, NULL, NULL); |
| 835 | if (sym) |
| 836 | { |
| 837 | type = SYMBOL_TYPE (sym); |
| 838 | if (type && TYPE_CODE (type) == TYPE_CODE_BOOL) |
| 839 | return type; |
| 840 | } |
| 841 | return builtin_type_f_logical_s2; |
| 842 | case language_cplus: |
| 843 | sym = lookup_symbol ("bool", NULL, VAR_NAMESPACE, NULL, NULL); |
| 844 | if (sym) |
| 845 | { |
| 846 | type = SYMBOL_TYPE (sym); |
| 847 | if (type && TYPE_CODE (type) == TYPE_CODE_BOOL) |
| 848 | return type; |
| 849 | } |
| 850 | return builtin_type_bool; |
| 851 | default: |
| 852 | return builtin_type_int; |
| 853 | } |
| 854 | } |
| 855 | \f |
| 856 | /* This page contains functions that return info about |
| 857 | (struct value) values used in GDB. */ |
| 858 | |
| 859 | /* Returns non-zero if the value VAL represents a true value. */ |
| 860 | int |
| 861 | value_true (val) |
| 862 | value_ptr val; |
| 863 | { |
| 864 | /* It is possible that we should have some sort of error if a non-boolean |
| 865 | value is used in this context. Possibly dependent on some kind of |
| 866 | "boolean-checking" option like range checking. But it should probably |
| 867 | not depend on the language except insofar as is necessary to identify |
| 868 | a "boolean" value (i.e. in C using a float, pointer, etc., as a boolean |
| 869 | should be an error, probably). */ |
| 870 | return !value_logical_not (val); |
| 871 | } |
| 872 | \f |
| 873 | /* Returns non-zero if the operator OP is defined on |
| 874 | the values ARG1 and ARG2. */ |
| 875 | |
| 876 | #if 0 /* Currently unused */ |
| 877 | |
| 878 | void |
| 879 | binop_type_check (arg1, arg2, op) |
| 880 | value_ptr arg1, arg2; |
| 881 | int op; |
| 882 | { |
| 883 | struct type *t1, *t2; |
| 884 | |
| 885 | /* If we're not checking types, always return success. */ |
| 886 | if (!STRICT_TYPE) |
| 887 | return; |
| 888 | |
| 889 | t1 = VALUE_TYPE (arg1); |
| 890 | if (arg2 != NULL) |
| 891 | t2 = VALUE_TYPE (arg2); |
| 892 | else |
| 893 | t2 = NULL; |
| 894 | |
| 895 | switch (op) |
| 896 | { |
| 897 | case BINOP_ADD: |
| 898 | case BINOP_SUB: |
| 899 | if ((numeric_type (t1) && pointer_type (t2)) || |
| 900 | (pointer_type (t1) && numeric_type (t2))) |
| 901 | { |
| 902 | warning ("combining pointer and integer.\n"); |
| 903 | break; |
| 904 | } |
| 905 | case BINOP_MUL: |
| 906 | case BINOP_LSH: |
| 907 | case BINOP_RSH: |
| 908 | if (!numeric_type (t1) || !numeric_type (t2)) |
| 909 | type_op_error ("Arguments to %s must be numbers.", op); |
| 910 | else if (!same_type (t1, t2)) |
| 911 | type_op_error ("Arguments to %s must be of the same type.", op); |
| 912 | break; |
| 913 | |
| 914 | case BINOP_LOGICAL_AND: |
| 915 | case BINOP_LOGICAL_OR: |
| 916 | if (!boolean_type (t1) || !boolean_type (t2)) |
| 917 | type_op_error ("Arguments to %s must be of boolean type.", op); |
| 918 | break; |
| 919 | |
| 920 | case BINOP_EQUAL: |
| 921 | if ((pointer_type (t1) && !(pointer_type (t2) || integral_type (t2))) || |
| 922 | (pointer_type (t2) && !(pointer_type (t1) || integral_type (t1)))) |
| 923 | type_op_error ("A pointer can only be compared to an integer or pointer.", op); |
| 924 | else if ((pointer_type (t1) && integral_type (t2)) || |
| 925 | (integral_type (t1) && pointer_type (t2))) |
| 926 | { |
| 927 | warning ("combining integer and pointer.\n"); |
| 928 | break; |
| 929 | } |
| 930 | else if (!simple_type (t1) || !simple_type (t2)) |
| 931 | type_op_error ("Arguments to %s must be of simple type.", op); |
| 932 | else if (!same_type (t1, t2)) |
| 933 | type_op_error ("Arguments to %s must be of the same type.", op); |
| 934 | break; |
| 935 | |
| 936 | case BINOP_REM: |
| 937 | case BINOP_MOD: |
| 938 | if (!integral_type (t1) || !integral_type (t2)) |
| 939 | type_op_error ("Arguments to %s must be of integral type.", op); |
| 940 | break; |
| 941 | |
| 942 | case BINOP_LESS: |
| 943 | case BINOP_GTR: |
| 944 | case BINOP_LEQ: |
| 945 | case BINOP_GEQ: |
| 946 | if (!ordered_type (t1) || !ordered_type (t2)) |
| 947 | type_op_error ("Arguments to %s must be of ordered type.", op); |
| 948 | else if (!same_type (t1, t2)) |
| 949 | type_op_error ("Arguments to %s must be of the same type.", op); |
| 950 | break; |
| 951 | |
| 952 | case BINOP_ASSIGN: |
| 953 | if (pointer_type (t1) && !integral_type (t2)) |
| 954 | type_op_error ("A pointer can only be assigned an integer.", op); |
| 955 | else if (pointer_type (t1) && integral_type (t2)) |
| 956 | { |
| 957 | warning ("combining integer and pointer."); |
| 958 | break; |
| 959 | } |
| 960 | else if (!simple_type (t1) || !simple_type (t2)) |
| 961 | type_op_error ("Arguments to %s must be of simple type.", op); |
| 962 | else if (!same_type (t1, t2)) |
| 963 | type_op_error ("Arguments to %s must be of the same type.", op); |
| 964 | break; |
| 965 | |
| 966 | case BINOP_CONCAT: |
| 967 | /* FIXME: Needs to handle bitstrings as well. */ |
| 968 | if (!(string_type (t1) || character_type (t1) || integral_type (t1)) |
| 969 | || !(string_type (t2) || character_type (t2) || integral_type (t2))) |
| 970 | type_op_error ("Arguments to %s must be strings or characters.", op); |
| 971 | break; |
| 972 | |
| 973 | /* Unary checks -- arg2 is null */ |
| 974 | |
| 975 | case UNOP_LOGICAL_NOT: |
| 976 | if (!boolean_type (t1)) |
| 977 | type_op_error ("Argument to %s must be of boolean type.", op); |
| 978 | break; |
| 979 | |
| 980 | case UNOP_PLUS: |
| 981 | case UNOP_NEG: |
| 982 | if (!numeric_type (t1)) |
| 983 | type_op_error ("Argument to %s must be of numeric type.", op); |
| 984 | break; |
| 985 | |
| 986 | case UNOP_IND: |
| 987 | if (integral_type (t1)) |
| 988 | { |
| 989 | warning ("combining pointer and integer.\n"); |
| 990 | break; |
| 991 | } |
| 992 | else if (!pointer_type (t1)) |
| 993 | type_op_error ("Argument to %s must be a pointer.", op); |
| 994 | break; |
| 995 | |
| 996 | case UNOP_PREINCREMENT: |
| 997 | case UNOP_POSTINCREMENT: |
| 998 | case UNOP_PREDECREMENT: |
| 999 | case UNOP_POSTDECREMENT: |
| 1000 | if (!ordered_type (t1)) |
| 1001 | type_op_error ("Argument to %s must be of an ordered type.", op); |
| 1002 | break; |
| 1003 | |
| 1004 | default: |
| 1005 | /* Ok. The following operators have different meanings in |
| 1006 | different languages. */ |
| 1007 | switch (current_language->la_language) |
| 1008 | { |
| 1009 | #ifdef _LANG_c |
| 1010 | case language_c: |
| 1011 | case language_cplus: |
| 1012 | switch (op) |
| 1013 | { |
| 1014 | case BINOP_DIV: |
| 1015 | if (!numeric_type (t1) || !numeric_type (t2)) |
| 1016 | type_op_error ("Arguments to %s must be numbers.", op); |
| 1017 | break; |
| 1018 | } |
| 1019 | break; |
| 1020 | #endif |
| 1021 | |
| 1022 | #ifdef _LANG_m2 |
| 1023 | case language_m2: |
| 1024 | switch (op) |
| 1025 | { |
| 1026 | case BINOP_DIV: |
| 1027 | if (!float_type (t1) || !float_type (t2)) |
| 1028 | type_op_error ("Arguments to %s must be floating point numbers.", op); |
| 1029 | break; |
| 1030 | case BINOP_INTDIV: |
| 1031 | if (!integral_type (t1) || !integral_type (t2)) |
| 1032 | type_op_error ("Arguments to %s must be of integral type.", op); |
| 1033 | break; |
| 1034 | } |
| 1035 | #endif |
| 1036 | |
| 1037 | #ifdef _LANG_chill |
| 1038 | case language_chill: |
| 1039 | error ("Missing Chill support in function binop_type_check."); /*FIXME */ |
| 1040 | #endif |
| 1041 | |
| 1042 | } |
| 1043 | } |
| 1044 | } |
| 1045 | |
| 1046 | #endif /* 0 */ |
| 1047 | \f |
| 1048 | |
| 1049 | /* This page contains functions for the printing out of |
| 1050 | error messages that occur during type- and range- |
| 1051 | checking. */ |
| 1052 | |
| 1053 | /* Prints the format string FMT with the operator as a string |
| 1054 | corresponding to the opcode OP. If FATAL is non-zero, then |
| 1055 | this is an error and error () is called. Otherwise, it is |
| 1056 | a warning and printf() is called. */ |
| 1057 | void |
| 1058 | op_error (fmt, op, fatal) |
| 1059 | char *fmt; |
| 1060 | enum exp_opcode op; |
| 1061 | int fatal; |
| 1062 | { |
| 1063 | if (fatal) |
| 1064 | error (fmt, op_string (op)); |
| 1065 | else |
| 1066 | { |
| 1067 | warning (fmt, op_string (op)); |
| 1068 | } |
| 1069 | } |
| 1070 | |
| 1071 | /* These are called when a language fails a type- or range-check. |
| 1072 | The first argument should be a printf()-style format string, and |
| 1073 | the rest of the arguments should be its arguments. If |
| 1074 | [type|range]_check is [type|range]_check_on, then return_to_top_level() |
| 1075 | is called in the style of error (). Otherwise, the message is prefixed |
| 1076 | by the value of warning_pre_print and we do not return to the top level. */ |
| 1077 | |
| 1078 | void |
| 1079 | type_error (char *string,...) |
| 1080 | { |
| 1081 | va_list args; |
| 1082 | va_start (args, string); |
| 1083 | |
| 1084 | if (type_check == type_check_warn) |
| 1085 | fprintf_filtered (gdb_stderr, warning_pre_print); |
| 1086 | else |
| 1087 | error_begin (); |
| 1088 | |
| 1089 | vfprintf_filtered (gdb_stderr, string, args); |
| 1090 | fprintf_filtered (gdb_stderr, "\n"); |
| 1091 | va_end (args); |
| 1092 | if (type_check == type_check_on) |
| 1093 | return_to_top_level (RETURN_ERROR); |
| 1094 | } |
| 1095 | |
| 1096 | void |
| 1097 | range_error (char *string,...) |
| 1098 | { |
| 1099 | va_list args; |
| 1100 | va_start (args, string); |
| 1101 | |
| 1102 | if (range_check == range_check_warn) |
| 1103 | fprintf_filtered (gdb_stderr, warning_pre_print); |
| 1104 | else |
| 1105 | error_begin (); |
| 1106 | |
| 1107 | vfprintf_filtered (gdb_stderr, string, args); |
| 1108 | fprintf_filtered (gdb_stderr, "\n"); |
| 1109 | va_end (args); |
| 1110 | if (range_check == range_check_on) |
| 1111 | return_to_top_level (RETURN_ERROR); |
| 1112 | } |
| 1113 | \f |
| 1114 | |
| 1115 | /* This page contains miscellaneous functions */ |
| 1116 | |
| 1117 | /* Return the language enum for a given language string. */ |
| 1118 | |
| 1119 | enum language |
| 1120 | language_enum (str) |
| 1121 | char *str; |
| 1122 | { |
| 1123 | int i; |
| 1124 | |
| 1125 | for (i = 0; i < languages_size; i++) |
| 1126 | if (STREQ (languages[i]->la_name, str)) |
| 1127 | return languages[i]->la_language; |
| 1128 | |
| 1129 | return language_unknown; |
| 1130 | } |
| 1131 | |
| 1132 | /* Return the language struct for a given language enum. */ |
| 1133 | |
| 1134 | const struct language_defn * |
| 1135 | language_def (lang) |
| 1136 | enum language lang; |
| 1137 | { |
| 1138 | int i; |
| 1139 | |
| 1140 | for (i = 0; i < languages_size; i++) |
| 1141 | { |
| 1142 | if (languages[i]->la_language == lang) |
| 1143 | { |
| 1144 | return languages[i]; |
| 1145 | } |
| 1146 | } |
| 1147 | return NULL; |
| 1148 | } |
| 1149 | |
| 1150 | /* Return the language as a string */ |
| 1151 | char * |
| 1152 | language_str (lang) |
| 1153 | enum language lang; |
| 1154 | { |
| 1155 | int i; |
| 1156 | |
| 1157 | for (i = 0; i < languages_size; i++) |
| 1158 | { |
| 1159 | if (languages[i]->la_language == lang) |
| 1160 | { |
| 1161 | return languages[i]->la_name; |
| 1162 | } |
| 1163 | } |
| 1164 | return "Unknown"; |
| 1165 | } |
| 1166 | |
| 1167 | static void |
| 1168 | set_check (ignore, from_tty) |
| 1169 | char *ignore; |
| 1170 | int from_tty; |
| 1171 | { |
| 1172 | printf_unfiltered ( |
| 1173 | "\"set check\" must be followed by the name of a check subcommand.\n"); |
| 1174 | help_list (setchecklist, "set check ", -1, gdb_stdout); |
| 1175 | } |
| 1176 | |
| 1177 | static void |
| 1178 | show_check (ignore, from_tty) |
| 1179 | char *ignore; |
| 1180 | int from_tty; |
| 1181 | { |
| 1182 | cmd_show_list (showchecklist, from_tty, ""); |
| 1183 | } |
| 1184 | \f |
| 1185 | /* Add a language to the set of known languages. */ |
| 1186 | |
| 1187 | void |
| 1188 | add_language (lang) |
| 1189 | const struct language_defn *lang; |
| 1190 | { |
| 1191 | if (lang->la_magic != LANG_MAGIC) |
| 1192 | { |
| 1193 | fprintf_unfiltered (gdb_stderr, "Magic number of %s language struct wrong\n", |
| 1194 | lang->la_name); |
| 1195 | abort (); |
| 1196 | } |
| 1197 | |
| 1198 | if (!languages) |
| 1199 | { |
| 1200 | languages_allocsize = DEFAULT_ALLOCSIZE; |
| 1201 | languages = (const struct language_defn **) xmalloc |
| 1202 | (languages_allocsize * sizeof (*languages)); |
| 1203 | } |
| 1204 | if (languages_size >= languages_allocsize) |
| 1205 | { |
| 1206 | languages_allocsize *= 2; |
| 1207 | languages = (const struct language_defn **) xrealloc ((char *) languages, |
| 1208 | languages_allocsize * sizeof (*languages)); |
| 1209 | } |
| 1210 | languages[languages_size++] = lang; |
| 1211 | } |
| 1212 | |
| 1213 | /* Define the language that is no language. */ |
| 1214 | |
| 1215 | static int |
| 1216 | unk_lang_parser () |
| 1217 | { |
| 1218 | return 1; |
| 1219 | } |
| 1220 | |
| 1221 | static void |
| 1222 | unk_lang_error (msg) |
| 1223 | char *msg; |
| 1224 | { |
| 1225 | error ("Attempted to parse an expression with unknown language"); |
| 1226 | } |
| 1227 | |
| 1228 | static void |
| 1229 | unk_lang_emit_char (c, stream, quoter) |
| 1230 | register int c; |
| 1231 | GDB_FILE *stream; |
| 1232 | int quoter; |
| 1233 | { |
| 1234 | error ("internal error - unimplemented function unk_lang_emit_char called."); |
| 1235 | } |
| 1236 | |
| 1237 | static void |
| 1238 | unk_lang_printchar (c, stream) |
| 1239 | register int c; |
| 1240 | GDB_FILE *stream; |
| 1241 | { |
| 1242 | error ("internal error - unimplemented function unk_lang_printchar called."); |
| 1243 | } |
| 1244 | |
| 1245 | static void |
| 1246 | unk_lang_printstr (stream, string, length, width, force_ellipses) |
| 1247 | GDB_FILE *stream; |
| 1248 | char *string; |
| 1249 | unsigned int length; |
| 1250 | int width; |
| 1251 | int force_ellipses; |
| 1252 | { |
| 1253 | error ("internal error - unimplemented function unk_lang_printstr called."); |
| 1254 | } |
| 1255 | |
| 1256 | static struct type * |
| 1257 | unk_lang_create_fundamental_type (objfile, typeid) |
| 1258 | struct objfile *objfile; |
| 1259 | int typeid; |
| 1260 | { |
| 1261 | error ("internal error - unimplemented function unk_lang_create_fundamental_type called."); |
| 1262 | } |
| 1263 | |
| 1264 | static void |
| 1265 | unk_lang_print_type (type, varstring, stream, show, level) |
| 1266 | struct type *type; |
| 1267 | char *varstring; |
| 1268 | GDB_FILE *stream; |
| 1269 | int show; |
| 1270 | int level; |
| 1271 | { |
| 1272 | error ("internal error - unimplemented function unk_lang_print_type called."); |
| 1273 | } |
| 1274 | |
| 1275 | static int |
| 1276 | unk_lang_val_print (type, valaddr, embedded_offset, address, stream, format, deref_ref, |
| 1277 | recurse, pretty) |
| 1278 | struct type *type; |
| 1279 | char *valaddr; |
| 1280 | int embedded_offset; |
| 1281 | CORE_ADDR address; |
| 1282 | GDB_FILE *stream; |
| 1283 | int format; |
| 1284 | int deref_ref; |
| 1285 | int recurse; |
| 1286 | enum val_prettyprint pretty; |
| 1287 | { |
| 1288 | error ("internal error - unimplemented function unk_lang_val_print called."); |
| 1289 | } |
| 1290 | |
| 1291 | static int |
| 1292 | unk_lang_value_print (val, stream, format, pretty) |
| 1293 | value_ptr val; |
| 1294 | GDB_FILE *stream; |
| 1295 | int format; |
| 1296 | enum val_prettyprint pretty; |
| 1297 | { |
| 1298 | error ("internal error - unimplemented function unk_lang_value_print called."); |
| 1299 | } |
| 1300 | |
| 1301 | static struct type **CONST_PTR (unknown_builtin_types[]) = |
| 1302 | { |
| 1303 | 0 |
| 1304 | }; |
| 1305 | static const struct op_print unk_op_print_tab[] = |
| 1306 | { |
| 1307 | {NULL, OP_NULL, PREC_NULL, 0} |
| 1308 | }; |
| 1309 | |
| 1310 | const struct language_defn unknown_language_defn = |
| 1311 | { |
| 1312 | "unknown", |
| 1313 | language_unknown, |
| 1314 | &unknown_builtin_types[0], |
| 1315 | range_check_off, |
| 1316 | type_check_off, |
| 1317 | unk_lang_parser, |
| 1318 | unk_lang_error, |
| 1319 | evaluate_subexp_standard, |
| 1320 | unk_lang_printchar, /* Print character constant */ |
| 1321 | unk_lang_printstr, |
| 1322 | unk_lang_emit_char, |
| 1323 | unk_lang_create_fundamental_type, |
| 1324 | unk_lang_print_type, /* Print a type using appropriate syntax */ |
| 1325 | unk_lang_val_print, /* Print a value using appropriate syntax */ |
| 1326 | unk_lang_value_print, /* Print a top-level value */ |
| 1327 | {"", "", "", ""}, /* Binary format info */ |
| 1328 | {"0%lo", "0", "o", ""}, /* Octal format info */ |
| 1329 | {"%ld", "", "d", ""}, /* Decimal format info */ |
| 1330 | {"0x%lx", "0x", "x", ""}, /* Hex format info */ |
| 1331 | unk_op_print_tab, /* expression operators for printing */ |
| 1332 | 1, /* c-style arrays */ |
| 1333 | 0, /* String lower bound */ |
| 1334 | &builtin_type_char, /* Type of string elements */ |
| 1335 | LANG_MAGIC |
| 1336 | }; |
| 1337 | |
| 1338 | /* These two structs define fake entries for the "local" and "auto" options. */ |
| 1339 | const struct language_defn auto_language_defn = |
| 1340 | { |
| 1341 | "auto", |
| 1342 | language_auto, |
| 1343 | &unknown_builtin_types[0], |
| 1344 | range_check_off, |
| 1345 | type_check_off, |
| 1346 | unk_lang_parser, |
| 1347 | unk_lang_error, |
| 1348 | evaluate_subexp_standard, |
| 1349 | unk_lang_printchar, /* Print character constant */ |
| 1350 | unk_lang_printstr, |
| 1351 | unk_lang_emit_char, |
| 1352 | unk_lang_create_fundamental_type, |
| 1353 | unk_lang_print_type, /* Print a type using appropriate syntax */ |
| 1354 | unk_lang_val_print, /* Print a value using appropriate syntax */ |
| 1355 | unk_lang_value_print, /* Print a top-level value */ |
| 1356 | {"", "", "", ""}, /* Binary format info */ |
| 1357 | {"0%lo", "0", "o", ""}, /* Octal format info */ |
| 1358 | {"%ld", "", "d", ""}, /* Decimal format info */ |
| 1359 | {"0x%lx", "0x", "x", ""}, /* Hex format info */ |
| 1360 | unk_op_print_tab, /* expression operators for printing */ |
| 1361 | 1, /* c-style arrays */ |
| 1362 | 0, /* String lower bound */ |
| 1363 | &builtin_type_char, /* Type of string elements */ |
| 1364 | LANG_MAGIC |
| 1365 | }; |
| 1366 | |
| 1367 | const struct language_defn local_language_defn = |
| 1368 | { |
| 1369 | "local", |
| 1370 | language_auto, |
| 1371 | &unknown_builtin_types[0], |
| 1372 | range_check_off, |
| 1373 | type_check_off, |
| 1374 | unk_lang_parser, |
| 1375 | unk_lang_error, |
| 1376 | evaluate_subexp_standard, |
| 1377 | unk_lang_printchar, /* Print character constant */ |
| 1378 | unk_lang_printstr, |
| 1379 | unk_lang_emit_char, |
| 1380 | unk_lang_create_fundamental_type, |
| 1381 | unk_lang_print_type, /* Print a type using appropriate syntax */ |
| 1382 | unk_lang_val_print, /* Print a value using appropriate syntax */ |
| 1383 | unk_lang_value_print, /* Print a top-level value */ |
| 1384 | {"", "", "", ""}, /* Binary format info */ |
| 1385 | {"0%lo", "0", "o", ""}, /* Octal format info */ |
| 1386 | {"%ld", "", "d", ""}, /* Decimal format info */ |
| 1387 | {"0x%lx", "0x", "x", ""}, /* Hex format info */ |
| 1388 | unk_op_print_tab, /* expression operators for printing */ |
| 1389 | 1, /* c-style arrays */ |
| 1390 | 0, /* String lower bound */ |
| 1391 | &builtin_type_char, /* Type of string elements */ |
| 1392 | LANG_MAGIC |
| 1393 | }; |
| 1394 | \f |
| 1395 | /* Initialize the language routines */ |
| 1396 | |
| 1397 | void |
| 1398 | _initialize_language () |
| 1399 | { |
| 1400 | struct cmd_list_element *set, *show; |
| 1401 | |
| 1402 | /* GDB commands for language specific stuff */ |
| 1403 | |
| 1404 | set = add_set_cmd ("language", class_support, var_string_noescape, |
| 1405 | (char *) &language, |
| 1406 | "Set the current source language.", |
| 1407 | &setlist); |
| 1408 | show = add_show_from_set (set, &showlist); |
| 1409 | set->function.cfunc = set_language_command; |
| 1410 | show->function.cfunc = show_language_command; |
| 1411 | |
| 1412 | add_prefix_cmd ("check", no_class, set_check, |
| 1413 | "Set the status of the type/range checker", |
| 1414 | &setchecklist, "set check ", 0, &setlist); |
| 1415 | add_alias_cmd ("c", "check", no_class, 1, &setlist); |
| 1416 | add_alias_cmd ("ch", "check", no_class, 1, &setlist); |
| 1417 | |
| 1418 | add_prefix_cmd ("check", no_class, show_check, |
| 1419 | "Show the status of the type/range checker", |
| 1420 | &showchecklist, "show check ", 0, &showlist); |
| 1421 | add_alias_cmd ("c", "check", no_class, 1, &showlist); |
| 1422 | add_alias_cmd ("ch", "check", no_class, 1, &showlist); |
| 1423 | |
| 1424 | set = add_set_cmd ("type", class_support, var_string_noescape, |
| 1425 | (char *) &type, |
| 1426 | "Set type checking. (on/warn/off/auto)", |
| 1427 | &setchecklist); |
| 1428 | show = add_show_from_set (set, &showchecklist); |
| 1429 | set->function.cfunc = set_type_command; |
| 1430 | show->function.cfunc = show_type_command; |
| 1431 | |
| 1432 | set = add_set_cmd ("range", class_support, var_string_noescape, |
| 1433 | (char *) &range, |
| 1434 | "Set range checking. (on/warn/off/auto)", |
| 1435 | &setchecklist); |
| 1436 | show = add_show_from_set (set, &showchecklist); |
| 1437 | set->function.cfunc = set_range_command; |
| 1438 | show->function.cfunc = show_range_command; |
| 1439 | |
| 1440 | add_language (&unknown_language_defn); |
| 1441 | add_language (&local_language_defn); |
| 1442 | add_language (&auto_language_defn); |
| 1443 | |
| 1444 | language = savestring ("auto", strlen ("auto")); |
| 1445 | range = savestring ("auto", strlen ("auto")); |
| 1446 | type = savestring ("auto", strlen ("auto")); |
| 1447 | |
| 1448 | /* Have the above take effect */ |
| 1449 | |
| 1450 | set_language_command (language, 0); |
| 1451 | set_type_command (NULL, 0); |
| 1452 | set_range_command (NULL, 0); |
| 1453 | } |