| 1 | /* C language support routines for GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright (C) 1992-2019 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include "defs.h" |
| 21 | #include "symtab.h" |
| 22 | #include "gdbtypes.h" |
| 23 | #include "expression.h" |
| 24 | #include "parser-defs.h" |
| 25 | #include "language.h" |
| 26 | #include "varobj.h" |
| 27 | #include "c-lang.h" |
| 28 | #include "c-support.h" |
| 29 | #include "valprint.h" |
| 30 | #include "macroscope.h" |
| 31 | #include "charset.h" |
| 32 | #include "demangle.h" |
| 33 | #include "cp-abi.h" |
| 34 | #include "cp-support.h" |
| 35 | #include "gdb_obstack.h" |
| 36 | #include <ctype.h> |
| 37 | #include "gdbcore.h" |
| 38 | |
| 39 | /* Given a C string type, STR_TYPE, return the corresponding target |
| 40 | character set name. */ |
| 41 | |
| 42 | static const char * |
| 43 | charset_for_string_type (c_string_type str_type, struct gdbarch *gdbarch) |
| 44 | { |
| 45 | switch (str_type & ~C_CHAR) |
| 46 | { |
| 47 | case C_STRING: |
| 48 | return target_charset (gdbarch); |
| 49 | case C_WIDE_STRING: |
| 50 | return target_wide_charset (gdbarch); |
| 51 | case C_STRING_16: |
| 52 | /* FIXME: UTF-16 is not always correct. */ |
| 53 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
| 54 | return "UTF-16BE"; |
| 55 | else |
| 56 | return "UTF-16LE"; |
| 57 | case C_STRING_32: |
| 58 | /* FIXME: UTF-32 is not always correct. */ |
| 59 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
| 60 | return "UTF-32BE"; |
| 61 | else |
| 62 | return "UTF-32LE"; |
| 63 | } |
| 64 | internal_error (__FILE__, __LINE__, _("unhandled c_string_type")); |
| 65 | } |
| 66 | |
| 67 | /* Classify ELTTYPE according to what kind of character it is. Return |
| 68 | the enum constant representing the character type. Also set |
| 69 | *ENCODING to the name of the character set to use when converting |
| 70 | characters of this type in target BYTE_ORDER to the host character |
| 71 | set. */ |
| 72 | |
| 73 | static c_string_type |
| 74 | classify_type (struct type *elttype, struct gdbarch *gdbarch, |
| 75 | const char **encoding) |
| 76 | { |
| 77 | c_string_type result; |
| 78 | |
| 79 | /* We loop because ELTTYPE may be a typedef, and we want to |
| 80 | successively peel each typedef until we reach a type we |
| 81 | understand. We don't use CHECK_TYPEDEF because that will strip |
| 82 | all typedefs at once -- but in C, wchar_t is itself a typedef, so |
| 83 | that would do the wrong thing. */ |
| 84 | while (elttype) |
| 85 | { |
| 86 | const char *name = TYPE_NAME (elttype); |
| 87 | |
| 88 | if (TYPE_CODE (elttype) == TYPE_CODE_CHAR || !name) |
| 89 | { |
| 90 | result = C_CHAR; |
| 91 | goto done; |
| 92 | } |
| 93 | |
| 94 | if (!strcmp (name, "wchar_t")) |
| 95 | { |
| 96 | result = C_WIDE_CHAR; |
| 97 | goto done; |
| 98 | } |
| 99 | |
| 100 | if (!strcmp (name, "char16_t")) |
| 101 | { |
| 102 | result = C_CHAR_16; |
| 103 | goto done; |
| 104 | } |
| 105 | |
| 106 | if (!strcmp (name, "char32_t")) |
| 107 | { |
| 108 | result = C_CHAR_32; |
| 109 | goto done; |
| 110 | } |
| 111 | |
| 112 | if (TYPE_CODE (elttype) != TYPE_CODE_TYPEDEF) |
| 113 | break; |
| 114 | |
| 115 | /* Call for side effects. */ |
| 116 | check_typedef (elttype); |
| 117 | |
| 118 | if (TYPE_TARGET_TYPE (elttype)) |
| 119 | elttype = TYPE_TARGET_TYPE (elttype); |
| 120 | else |
| 121 | { |
| 122 | /* Perhaps check_typedef did not update the target type. In |
| 123 | this case, force the lookup again and hope it works out. |
| 124 | It never will for C, but it might for C++. */ |
| 125 | elttype = check_typedef (elttype); |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | /* Punt. */ |
| 130 | result = C_CHAR; |
| 131 | |
| 132 | done: |
| 133 | if (encoding) |
| 134 | *encoding = charset_for_string_type (result, gdbarch); |
| 135 | |
| 136 | return result; |
| 137 | } |
| 138 | |
| 139 | /* Print the character C on STREAM as part of the contents of a |
| 140 | literal string whose delimiter is QUOTER. Note that that format |
| 141 | for printing characters and strings is language specific. */ |
| 142 | |
| 143 | void |
| 144 | c_emit_char (int c, struct type *type, |
| 145 | struct ui_file *stream, int quoter) |
| 146 | { |
| 147 | const char *encoding; |
| 148 | |
| 149 | classify_type (type, get_type_arch (type), &encoding); |
| 150 | generic_emit_char (c, type, stream, quoter, encoding); |
| 151 | } |
| 152 | |
| 153 | void |
| 154 | c_printchar (int c, struct type *type, struct ui_file *stream) |
| 155 | { |
| 156 | c_string_type str_type; |
| 157 | |
| 158 | str_type = classify_type (type, get_type_arch (type), NULL); |
| 159 | switch (str_type) |
| 160 | { |
| 161 | case C_CHAR: |
| 162 | break; |
| 163 | case C_WIDE_CHAR: |
| 164 | fputc_filtered ('L', stream); |
| 165 | break; |
| 166 | case C_CHAR_16: |
| 167 | fputc_filtered ('u', stream); |
| 168 | break; |
| 169 | case C_CHAR_32: |
| 170 | fputc_filtered ('U', stream); |
| 171 | break; |
| 172 | } |
| 173 | |
| 174 | fputc_filtered ('\'', stream); |
| 175 | LA_EMIT_CHAR (c, type, stream, '\''); |
| 176 | fputc_filtered ('\'', stream); |
| 177 | } |
| 178 | |
| 179 | /* Print the character string STRING, printing at most LENGTH |
| 180 | characters. LENGTH is -1 if the string is nul terminated. Each |
| 181 | character is WIDTH bytes long. Printing stops early if the number |
| 182 | hits print_max; repeat counts are printed as appropriate. Print |
| 183 | ellipses at the end if we had to stop before printing LENGTH |
| 184 | characters, or if FORCE_ELLIPSES. */ |
| 185 | |
| 186 | void |
| 187 | c_printstr (struct ui_file *stream, struct type *type, |
| 188 | const gdb_byte *string, unsigned int length, |
| 189 | const char *user_encoding, int force_ellipses, |
| 190 | const struct value_print_options *options) |
| 191 | { |
| 192 | c_string_type str_type; |
| 193 | const char *type_encoding; |
| 194 | const char *encoding; |
| 195 | |
| 196 | str_type = (classify_type (type, get_type_arch (type), &type_encoding) |
| 197 | & ~C_CHAR); |
| 198 | switch (str_type) |
| 199 | { |
| 200 | case C_STRING: |
| 201 | break; |
| 202 | case C_WIDE_STRING: |
| 203 | fputs_filtered ("L", stream); |
| 204 | break; |
| 205 | case C_STRING_16: |
| 206 | fputs_filtered ("u", stream); |
| 207 | break; |
| 208 | case C_STRING_32: |
| 209 | fputs_filtered ("U", stream); |
| 210 | break; |
| 211 | } |
| 212 | |
| 213 | encoding = (user_encoding && *user_encoding) ? user_encoding : type_encoding; |
| 214 | |
| 215 | generic_printstr (stream, type, string, length, encoding, force_ellipses, |
| 216 | '"', 1, options); |
| 217 | } |
| 218 | |
| 219 | /* Obtain a C string from the inferior storing it in a newly allocated |
| 220 | buffer in BUFFER, which should be freed by the caller. If the in- |
| 221 | and out-parameter *LENGTH is specified at -1, the string is read |
| 222 | until a null character of the appropriate width is found, otherwise |
| 223 | the string is read to the length of characters specified. The size |
| 224 | of a character is determined by the length of the target type of |
| 225 | the pointer or array. |
| 226 | |
| 227 | If VALUE is an array with a known length, and *LENGTH is -1, |
| 228 | the function will not read past the end of the array. However, any |
| 229 | declared size of the array is ignored if *LENGTH > 0. |
| 230 | |
| 231 | On completion, *LENGTH will be set to the size of the string read in |
| 232 | characters. (If a length of -1 is specified, the length returned |
| 233 | will not include the null character). CHARSET is always set to the |
| 234 | target charset. */ |
| 235 | |
| 236 | void |
| 237 | c_get_string (struct value *value, gdb::unique_xmalloc_ptr<gdb_byte> *buffer, |
| 238 | int *length, struct type **char_type, |
| 239 | const char **charset) |
| 240 | { |
| 241 | int err, width; |
| 242 | unsigned int fetchlimit; |
| 243 | struct type *type = check_typedef (value_type (value)); |
| 244 | struct type *element_type = TYPE_TARGET_TYPE (type); |
| 245 | int req_length = *length; |
| 246 | enum bfd_endian byte_order |
| 247 | = gdbarch_byte_order (get_type_arch (type)); |
| 248 | |
| 249 | if (element_type == NULL) |
| 250 | goto error; |
| 251 | |
| 252 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) |
| 253 | { |
| 254 | /* If we know the size of the array, we can use it as a limit on |
| 255 | the number of characters to be fetched. */ |
| 256 | if (TYPE_NFIELDS (type) == 1 |
| 257 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_RANGE) |
| 258 | { |
| 259 | LONGEST low_bound, high_bound; |
| 260 | |
| 261 | get_discrete_bounds (TYPE_FIELD_TYPE (type, 0), |
| 262 | &low_bound, &high_bound); |
| 263 | fetchlimit = high_bound - low_bound + 1; |
| 264 | } |
| 265 | else |
| 266 | fetchlimit = UINT_MAX; |
| 267 | } |
| 268 | else if (TYPE_CODE (type) == TYPE_CODE_PTR) |
| 269 | fetchlimit = UINT_MAX; |
| 270 | else |
| 271 | /* We work only with arrays and pointers. */ |
| 272 | goto error; |
| 273 | |
| 274 | if (! c_textual_element_type (element_type, 0)) |
| 275 | goto error; |
| 276 | classify_type (element_type, get_type_arch (element_type), charset); |
| 277 | width = TYPE_LENGTH (element_type); |
| 278 | |
| 279 | /* If the string lives in GDB's memory instead of the inferior's, |
| 280 | then we just need to copy it to BUFFER. Also, since such strings |
| 281 | are arrays with known size, FETCHLIMIT will hold the size of the |
| 282 | array. */ |
| 283 | if ((VALUE_LVAL (value) == not_lval |
| 284 | || VALUE_LVAL (value) == lval_internalvar) |
| 285 | && fetchlimit != UINT_MAX) |
| 286 | { |
| 287 | int i; |
| 288 | const gdb_byte *contents = value_contents (value); |
| 289 | |
| 290 | /* If a length is specified, use that. */ |
| 291 | if (*length >= 0) |
| 292 | i = *length; |
| 293 | else |
| 294 | /* Otherwise, look for a null character. */ |
| 295 | for (i = 0; i < fetchlimit; i++) |
| 296 | if (extract_unsigned_integer (contents + i * width, |
| 297 | width, byte_order) == 0) |
| 298 | break; |
| 299 | |
| 300 | /* I is now either a user-defined length, the number of non-null |
| 301 | characters, or FETCHLIMIT. */ |
| 302 | *length = i * width; |
| 303 | buffer->reset ((gdb_byte *) xmalloc (*length)); |
| 304 | memcpy (buffer->get (), contents, *length); |
| 305 | err = 0; |
| 306 | } |
| 307 | else |
| 308 | { |
| 309 | CORE_ADDR addr = value_as_address (value); |
| 310 | |
| 311 | /* Prior to the fix for PR 16196 read_string would ignore fetchlimit |
| 312 | if length > 0. The old "broken" behaviour is the behaviour we want: |
| 313 | The caller may want to fetch 100 bytes from a variable length array |
| 314 | implemented using the common idiom of having an array of length 1 at |
| 315 | the end of a struct. In this case we want to ignore the declared |
| 316 | size of the array. However, it's counterintuitive to implement that |
| 317 | behaviour in read_string: what does fetchlimit otherwise mean if |
| 318 | length > 0. Therefore we implement the behaviour we want here: |
| 319 | If *length > 0, don't specify a fetchlimit. This preserves the |
| 320 | previous behaviour. We could move this check above where we know |
| 321 | whether the array is declared with a fixed size, but we only want |
| 322 | to apply this behaviour when calling read_string. PR 16286. */ |
| 323 | if (*length > 0) |
| 324 | fetchlimit = UINT_MAX; |
| 325 | |
| 326 | err = read_string (addr, *length, width, fetchlimit, |
| 327 | byte_order, buffer, length); |
| 328 | if (err != 0) |
| 329 | memory_error (TARGET_XFER_E_IO, addr); |
| 330 | } |
| 331 | |
| 332 | /* If the LENGTH is specified at -1, we want to return the string |
| 333 | length up to the terminating null character. If an actual length |
| 334 | was specified, we want to return the length of exactly what was |
| 335 | read. */ |
| 336 | if (req_length == -1) |
| 337 | /* If the last character is null, subtract it from LENGTH. */ |
| 338 | if (*length > 0 |
| 339 | && extract_unsigned_integer (buffer->get () + *length - width, |
| 340 | width, byte_order) == 0) |
| 341 | *length -= width; |
| 342 | |
| 343 | /* The read_string function will return the number of bytes read. |
| 344 | If length returned from read_string was > 0, return the number of |
| 345 | characters read by dividing the number of bytes by width. */ |
| 346 | if (*length != 0) |
| 347 | *length = *length / width; |
| 348 | |
| 349 | *char_type = element_type; |
| 350 | |
| 351 | return; |
| 352 | |
| 353 | error: |
| 354 | { |
| 355 | std::string type_str = type_to_string (type); |
| 356 | if (!type_str.empty ()) |
| 357 | { |
| 358 | error (_("Trying to read string with inappropriate type `%s'."), |
| 359 | type_str.c_str ()); |
| 360 | } |
| 361 | else |
| 362 | error (_("Trying to read string with inappropriate type.")); |
| 363 | } |
| 364 | } |
| 365 | |
| 366 | \f |
| 367 | /* Evaluating C and C++ expressions. */ |
| 368 | |
| 369 | /* Convert a UCN. The digits of the UCN start at P and extend no |
| 370 | farther than LIMIT. DEST_CHARSET is the name of the character set |
| 371 | into which the UCN should be converted. The results are written to |
| 372 | OUTPUT. LENGTH is the maximum length of the UCN, either 4 or 8. |
| 373 | Returns a pointer to just after the final digit of the UCN. */ |
| 374 | |
| 375 | static char * |
| 376 | convert_ucn (char *p, char *limit, const char *dest_charset, |
| 377 | struct obstack *output, int length) |
| 378 | { |
| 379 | unsigned long result = 0; |
| 380 | gdb_byte data[4]; |
| 381 | int i; |
| 382 | |
| 383 | for (i = 0; i < length && p < limit && ISXDIGIT (*p); ++i, ++p) |
| 384 | result = (result << 4) + host_hex_value (*p); |
| 385 | |
| 386 | for (i = 3; i >= 0; --i) |
| 387 | { |
| 388 | data[i] = result & 0xff; |
| 389 | result >>= 8; |
| 390 | } |
| 391 | |
| 392 | convert_between_encodings ("UTF-32BE", dest_charset, data, |
| 393 | 4, 4, output, translit_none); |
| 394 | |
| 395 | return p; |
| 396 | } |
| 397 | |
| 398 | /* Emit a character, VALUE, which was specified numerically, to |
| 399 | OUTPUT. TYPE is the target character type. */ |
| 400 | |
| 401 | static void |
| 402 | emit_numeric_character (struct type *type, unsigned long value, |
| 403 | struct obstack *output) |
| 404 | { |
| 405 | gdb_byte *buffer; |
| 406 | |
| 407 | buffer = (gdb_byte *) alloca (TYPE_LENGTH (type)); |
| 408 | pack_long (buffer, type, value); |
| 409 | obstack_grow (output, buffer, TYPE_LENGTH (type)); |
| 410 | } |
| 411 | |
| 412 | /* Convert an octal escape sequence. TYPE is the target character |
| 413 | type. The digits of the escape sequence begin at P and extend no |
| 414 | farther than LIMIT. The result is written to OUTPUT. Returns a |
| 415 | pointer to just after the final digit of the escape sequence. */ |
| 416 | |
| 417 | static char * |
| 418 | convert_octal (struct type *type, char *p, |
| 419 | char *limit, struct obstack *output) |
| 420 | { |
| 421 | int i; |
| 422 | unsigned long value = 0; |
| 423 | |
| 424 | for (i = 0; |
| 425 | i < 3 && p < limit && ISDIGIT (*p) && *p != '8' && *p != '9'; |
| 426 | ++i) |
| 427 | { |
| 428 | value = 8 * value + host_hex_value (*p); |
| 429 | ++p; |
| 430 | } |
| 431 | |
| 432 | emit_numeric_character (type, value, output); |
| 433 | |
| 434 | return p; |
| 435 | } |
| 436 | |
| 437 | /* Convert a hex escape sequence. TYPE is the target character type. |
| 438 | The digits of the escape sequence begin at P and extend no farther |
| 439 | than LIMIT. The result is written to OUTPUT. Returns a pointer to |
| 440 | just after the final digit of the escape sequence. */ |
| 441 | |
| 442 | static char * |
| 443 | convert_hex (struct type *type, char *p, |
| 444 | char *limit, struct obstack *output) |
| 445 | { |
| 446 | unsigned long value = 0; |
| 447 | |
| 448 | while (p < limit && ISXDIGIT (*p)) |
| 449 | { |
| 450 | value = 16 * value + host_hex_value (*p); |
| 451 | ++p; |
| 452 | } |
| 453 | |
| 454 | emit_numeric_character (type, value, output); |
| 455 | |
| 456 | return p; |
| 457 | } |
| 458 | |
| 459 | #define ADVANCE \ |
| 460 | do { \ |
| 461 | ++p; \ |
| 462 | if (p == limit) \ |
| 463 | error (_("Malformed escape sequence")); \ |
| 464 | } while (0) |
| 465 | |
| 466 | /* Convert an escape sequence to a target format. TYPE is the target |
| 467 | character type to use, and DEST_CHARSET is the name of the target |
| 468 | character set. The backslash of the escape sequence is at *P, and |
| 469 | the escape sequence will not extend past LIMIT. The results are |
| 470 | written to OUTPUT. Returns a pointer to just past the final |
| 471 | character of the escape sequence. */ |
| 472 | |
| 473 | static char * |
| 474 | convert_escape (struct type *type, const char *dest_charset, |
| 475 | char *p, char *limit, struct obstack *output) |
| 476 | { |
| 477 | /* Skip the backslash. */ |
| 478 | ADVANCE; |
| 479 | |
| 480 | switch (*p) |
| 481 | { |
| 482 | case '\\': |
| 483 | obstack_1grow (output, '\\'); |
| 484 | ++p; |
| 485 | break; |
| 486 | |
| 487 | case 'x': |
| 488 | ADVANCE; |
| 489 | if (!ISXDIGIT (*p)) |
| 490 | error (_("\\x used with no following hex digits.")); |
| 491 | p = convert_hex (type, p, limit, output); |
| 492 | break; |
| 493 | |
| 494 | case '0': |
| 495 | case '1': |
| 496 | case '2': |
| 497 | case '3': |
| 498 | case '4': |
| 499 | case '5': |
| 500 | case '6': |
| 501 | case '7': |
| 502 | p = convert_octal (type, p, limit, output); |
| 503 | break; |
| 504 | |
| 505 | case 'u': |
| 506 | case 'U': |
| 507 | { |
| 508 | int length = *p == 'u' ? 4 : 8; |
| 509 | |
| 510 | ADVANCE; |
| 511 | if (!ISXDIGIT (*p)) |
| 512 | error (_("\\u used with no following hex digits")); |
| 513 | p = convert_ucn (p, limit, dest_charset, output, length); |
| 514 | } |
| 515 | } |
| 516 | |
| 517 | return p; |
| 518 | } |
| 519 | |
| 520 | /* Given a single string from a (C-specific) OP_STRING list, convert |
| 521 | it to a target string, handling escape sequences specially. The |
| 522 | output is written to OUTPUT. DATA is the input string, which has |
| 523 | length LEN. DEST_CHARSET is the name of the target character set, |
| 524 | and TYPE is the type of target character to use. */ |
| 525 | |
| 526 | static void |
| 527 | parse_one_string (struct obstack *output, char *data, int len, |
| 528 | const char *dest_charset, struct type *type) |
| 529 | { |
| 530 | char *limit; |
| 531 | |
| 532 | limit = data + len; |
| 533 | |
| 534 | while (data < limit) |
| 535 | { |
| 536 | char *p = data; |
| 537 | |
| 538 | /* Look for next escape, or the end of the input. */ |
| 539 | while (p < limit && *p != '\\') |
| 540 | ++p; |
| 541 | /* If we saw a run of characters, convert them all. */ |
| 542 | if (p > data) |
| 543 | convert_between_encodings (host_charset (), dest_charset, |
| 544 | (gdb_byte *) data, p - data, 1, |
| 545 | output, translit_none); |
| 546 | /* If we saw an escape, convert it. */ |
| 547 | if (p < limit) |
| 548 | p = convert_escape (type, dest_charset, p, limit, output); |
| 549 | data = p; |
| 550 | } |
| 551 | } |
| 552 | |
| 553 | /* Expression evaluator for the C language family. Most operations |
| 554 | are delegated to evaluate_subexp_standard; see that function for a |
| 555 | description of the arguments. */ |
| 556 | |
| 557 | struct value * |
| 558 | evaluate_subexp_c (struct type *expect_type, struct expression *exp, |
| 559 | int *pos, enum noside noside) |
| 560 | { |
| 561 | enum exp_opcode op = exp->elts[*pos].opcode; |
| 562 | |
| 563 | switch (op) |
| 564 | { |
| 565 | case OP_STRING: |
| 566 | { |
| 567 | int oplen, limit; |
| 568 | struct type *type; |
| 569 | struct value *result; |
| 570 | c_string_type dest_type; |
| 571 | const char *dest_charset; |
| 572 | int satisfy_expected = 0; |
| 573 | |
| 574 | auto_obstack output; |
| 575 | |
| 576 | ++*pos; |
| 577 | oplen = longest_to_int (exp->elts[*pos].longconst); |
| 578 | |
| 579 | ++*pos; |
| 580 | limit = *pos + BYTES_TO_EXP_ELEM (oplen + 1); |
| 581 | dest_type = ((enum c_string_type_values) |
| 582 | longest_to_int (exp->elts[*pos].longconst)); |
| 583 | switch (dest_type & ~C_CHAR) |
| 584 | { |
| 585 | case C_STRING: |
| 586 | type = language_string_char_type (exp->language_defn, |
| 587 | exp->gdbarch); |
| 588 | break; |
| 589 | case C_WIDE_STRING: |
| 590 | type = lookup_typename (exp->language_defn, exp->gdbarch, |
| 591 | "wchar_t", NULL, 0); |
| 592 | break; |
| 593 | case C_STRING_16: |
| 594 | type = lookup_typename (exp->language_defn, exp->gdbarch, |
| 595 | "char16_t", NULL, 0); |
| 596 | break; |
| 597 | case C_STRING_32: |
| 598 | type = lookup_typename (exp->language_defn, exp->gdbarch, |
| 599 | "char32_t", NULL, 0); |
| 600 | break; |
| 601 | default: |
| 602 | internal_error (__FILE__, __LINE__, _("unhandled c_string_type")); |
| 603 | } |
| 604 | |
| 605 | /* Ensure TYPE_LENGTH is valid for TYPE. */ |
| 606 | check_typedef (type); |
| 607 | |
| 608 | /* If the caller expects an array of some integral type, |
| 609 | satisfy them. If something odder is expected, rely on the |
| 610 | caller to cast. */ |
| 611 | if (expect_type && TYPE_CODE (expect_type) == TYPE_CODE_ARRAY) |
| 612 | { |
| 613 | struct type *element_type |
| 614 | = check_typedef (TYPE_TARGET_TYPE (expect_type)); |
| 615 | |
| 616 | if (TYPE_CODE (element_type) == TYPE_CODE_INT |
| 617 | || TYPE_CODE (element_type) == TYPE_CODE_CHAR) |
| 618 | { |
| 619 | type = element_type; |
| 620 | satisfy_expected = 1; |
| 621 | } |
| 622 | } |
| 623 | |
| 624 | dest_charset = charset_for_string_type (dest_type, exp->gdbarch); |
| 625 | |
| 626 | ++*pos; |
| 627 | while (*pos < limit) |
| 628 | { |
| 629 | int len; |
| 630 | |
| 631 | len = longest_to_int (exp->elts[*pos].longconst); |
| 632 | |
| 633 | ++*pos; |
| 634 | if (noside != EVAL_SKIP) |
| 635 | parse_one_string (&output, &exp->elts[*pos].string, len, |
| 636 | dest_charset, type); |
| 637 | *pos += BYTES_TO_EXP_ELEM (len); |
| 638 | } |
| 639 | |
| 640 | /* Skip the trailing length and opcode. */ |
| 641 | *pos += 2; |
| 642 | |
| 643 | if (noside == EVAL_SKIP) |
| 644 | { |
| 645 | /* Return a dummy value of the appropriate type. */ |
| 646 | if (expect_type != NULL) |
| 647 | result = allocate_value (expect_type); |
| 648 | else if ((dest_type & C_CHAR) != 0) |
| 649 | result = allocate_value (type); |
| 650 | else |
| 651 | result = value_cstring ("", 0, type); |
| 652 | return result; |
| 653 | } |
| 654 | |
| 655 | if ((dest_type & C_CHAR) != 0) |
| 656 | { |
| 657 | LONGEST value; |
| 658 | |
| 659 | if (obstack_object_size (&output) != TYPE_LENGTH (type)) |
| 660 | error (_("Could not convert character " |
| 661 | "constant to target character set")); |
| 662 | value = unpack_long (type, (gdb_byte *) obstack_base (&output)); |
| 663 | result = value_from_longest (type, value); |
| 664 | } |
| 665 | else |
| 666 | { |
| 667 | int i; |
| 668 | |
| 669 | /* Write the terminating character. */ |
| 670 | for (i = 0; i < TYPE_LENGTH (type); ++i) |
| 671 | obstack_1grow (&output, 0); |
| 672 | |
| 673 | if (satisfy_expected) |
| 674 | { |
| 675 | LONGEST low_bound, high_bound; |
| 676 | int element_size = TYPE_LENGTH (type); |
| 677 | |
| 678 | if (get_discrete_bounds (TYPE_INDEX_TYPE (expect_type), |
| 679 | &low_bound, &high_bound) < 0) |
| 680 | { |
| 681 | low_bound = 0; |
| 682 | high_bound = (TYPE_LENGTH (expect_type) / element_size) - 1; |
| 683 | } |
| 684 | if (obstack_object_size (&output) / element_size |
| 685 | > (high_bound - low_bound + 1)) |
| 686 | error (_("Too many array elements")); |
| 687 | |
| 688 | result = allocate_value (expect_type); |
| 689 | memcpy (value_contents_raw (result), obstack_base (&output), |
| 690 | obstack_object_size (&output)); |
| 691 | } |
| 692 | else |
| 693 | result = value_cstring ((const char *) obstack_base (&output), |
| 694 | obstack_object_size (&output), |
| 695 | type); |
| 696 | } |
| 697 | return result; |
| 698 | } |
| 699 | break; |
| 700 | |
| 701 | default: |
| 702 | break; |
| 703 | } |
| 704 | return evaluate_subexp_standard (expect_type, exp, pos, noside); |
| 705 | } |
| 706 | \f |
| 707 | /* la_watch_location_expression for C. */ |
| 708 | |
| 709 | gdb::unique_xmalloc_ptr<char> |
| 710 | c_watch_location_expression (struct type *type, CORE_ADDR addr) |
| 711 | { |
| 712 | type = check_typedef (TYPE_TARGET_TYPE (check_typedef (type))); |
| 713 | std::string name = type_to_string (type); |
| 714 | return gdb::unique_xmalloc_ptr<char> |
| 715 | (xstrprintf ("* (%s *) %s", name.c_str (), core_addr_to_string (addr))); |
| 716 | } |
| 717 | |
| 718 | \f |
| 719 | /* Table mapping opcodes into strings for printing operators |
| 720 | and precedences of the operators. */ |
| 721 | |
| 722 | const struct op_print c_op_print_tab[] = |
| 723 | { |
| 724 | {",", BINOP_COMMA, PREC_COMMA, 0}, |
| 725 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, |
| 726 | {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, |
| 727 | {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, |
| 728 | {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, |
| 729 | {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, |
| 730 | {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, |
| 731 | {"==", BINOP_EQUAL, PREC_EQUAL, 0}, |
| 732 | {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, |
| 733 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, |
| 734 | {">=", BINOP_GEQ, PREC_ORDER, 0}, |
| 735 | {">", BINOP_GTR, PREC_ORDER, 0}, |
| 736 | {"<", BINOP_LESS, PREC_ORDER, 0}, |
| 737 | {">>", BINOP_RSH, PREC_SHIFT, 0}, |
| 738 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, |
| 739 | {"+", BINOP_ADD, PREC_ADD, 0}, |
| 740 | {"-", BINOP_SUB, PREC_ADD, 0}, |
| 741 | {"*", BINOP_MUL, PREC_MUL, 0}, |
| 742 | {"/", BINOP_DIV, PREC_MUL, 0}, |
| 743 | {"%", BINOP_REM, PREC_MUL, 0}, |
| 744 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, |
| 745 | {"+", UNOP_PLUS, PREC_PREFIX, 0}, |
| 746 | {"-", UNOP_NEG, PREC_PREFIX, 0}, |
| 747 | {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, |
| 748 | {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, |
| 749 | {"*", UNOP_IND, PREC_PREFIX, 0}, |
| 750 | {"&", UNOP_ADDR, PREC_PREFIX, 0}, |
| 751 | {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0}, |
| 752 | {"alignof ", UNOP_ALIGNOF, PREC_PREFIX, 0}, |
| 753 | {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, |
| 754 | {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, |
| 755 | {NULL, OP_NULL, PREC_PREFIX, 0} |
| 756 | }; |
| 757 | \f |
| 758 | enum c_primitive_types { |
| 759 | c_primitive_type_int, |
| 760 | c_primitive_type_long, |
| 761 | c_primitive_type_short, |
| 762 | c_primitive_type_char, |
| 763 | c_primitive_type_float, |
| 764 | c_primitive_type_double, |
| 765 | c_primitive_type_void, |
| 766 | c_primitive_type_long_long, |
| 767 | c_primitive_type_signed_char, |
| 768 | c_primitive_type_unsigned_char, |
| 769 | c_primitive_type_unsigned_short, |
| 770 | c_primitive_type_unsigned_int, |
| 771 | c_primitive_type_unsigned_long, |
| 772 | c_primitive_type_unsigned_long_long, |
| 773 | c_primitive_type_long_double, |
| 774 | c_primitive_type_complex, |
| 775 | c_primitive_type_double_complex, |
| 776 | c_primitive_type_decfloat, |
| 777 | c_primitive_type_decdouble, |
| 778 | c_primitive_type_declong, |
| 779 | nr_c_primitive_types |
| 780 | }; |
| 781 | |
| 782 | void |
| 783 | c_language_arch_info (struct gdbarch *gdbarch, |
| 784 | struct language_arch_info *lai) |
| 785 | { |
| 786 | const struct builtin_type *builtin = builtin_type (gdbarch); |
| 787 | |
| 788 | lai->string_char_type = builtin->builtin_char; |
| 789 | lai->primitive_type_vector |
| 790 | = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_c_primitive_types + 1, |
| 791 | struct type *); |
| 792 | lai->primitive_type_vector [c_primitive_type_int] = builtin->builtin_int; |
| 793 | lai->primitive_type_vector [c_primitive_type_long] = builtin->builtin_long; |
| 794 | lai->primitive_type_vector [c_primitive_type_short] = builtin->builtin_short; |
| 795 | lai->primitive_type_vector [c_primitive_type_char] = builtin->builtin_char; |
| 796 | lai->primitive_type_vector [c_primitive_type_float] = builtin->builtin_float; |
| 797 | lai->primitive_type_vector [c_primitive_type_double] = builtin->builtin_double; |
| 798 | lai->primitive_type_vector [c_primitive_type_void] = builtin->builtin_void; |
| 799 | lai->primitive_type_vector [c_primitive_type_long_long] = builtin->builtin_long_long; |
| 800 | lai->primitive_type_vector [c_primitive_type_signed_char] = builtin->builtin_signed_char; |
| 801 | lai->primitive_type_vector [c_primitive_type_unsigned_char] = builtin->builtin_unsigned_char; |
| 802 | lai->primitive_type_vector [c_primitive_type_unsigned_short] = builtin->builtin_unsigned_short; |
| 803 | lai->primitive_type_vector [c_primitive_type_unsigned_int] = builtin->builtin_unsigned_int; |
| 804 | lai->primitive_type_vector [c_primitive_type_unsigned_long] = builtin->builtin_unsigned_long; |
| 805 | lai->primitive_type_vector [c_primitive_type_unsigned_long_long] = builtin->builtin_unsigned_long_long; |
| 806 | lai->primitive_type_vector [c_primitive_type_long_double] = builtin->builtin_long_double; |
| 807 | lai->primitive_type_vector [c_primitive_type_complex] = builtin->builtin_complex; |
| 808 | lai->primitive_type_vector [c_primitive_type_double_complex] = builtin->builtin_double_complex; |
| 809 | lai->primitive_type_vector [c_primitive_type_decfloat] = builtin->builtin_decfloat; |
| 810 | lai->primitive_type_vector [c_primitive_type_decdouble] = builtin->builtin_decdouble; |
| 811 | lai->primitive_type_vector [c_primitive_type_declong] = builtin->builtin_declong; |
| 812 | |
| 813 | lai->bool_type_default = builtin->builtin_int; |
| 814 | } |
| 815 | |
| 816 | const struct exp_descriptor exp_descriptor_c = |
| 817 | { |
| 818 | print_subexp_standard, |
| 819 | operator_length_standard, |
| 820 | operator_check_standard, |
| 821 | op_name_standard, |
| 822 | dump_subexp_body_standard, |
| 823 | evaluate_subexp_c |
| 824 | }; |
| 825 | |
| 826 | static const char *c_extensions[] = |
| 827 | { |
| 828 | ".c", NULL |
| 829 | }; |
| 830 | |
| 831 | extern const struct language_defn c_language_defn = |
| 832 | { |
| 833 | "c", /* Language name */ |
| 834 | "C", |
| 835 | language_c, |
| 836 | range_check_off, |
| 837 | case_sensitive_on, |
| 838 | array_row_major, |
| 839 | macro_expansion_c, |
| 840 | c_extensions, |
| 841 | &exp_descriptor_c, |
| 842 | c_parse, |
| 843 | null_post_parser, |
| 844 | c_printchar, /* Print a character constant */ |
| 845 | c_printstr, /* Function to print string constant */ |
| 846 | c_emit_char, /* Print a single char */ |
| 847 | c_print_type, /* Print a type using appropriate syntax */ |
| 848 | c_print_typedef, /* Print a typedef using appropriate syntax */ |
| 849 | c_val_print, /* Print a value using appropriate syntax */ |
| 850 | c_value_print, /* Print a top-level value */ |
| 851 | default_read_var_value, /* la_read_var_value */ |
| 852 | NULL, /* Language specific skip_trampoline */ |
| 853 | NULL, /* name_of_this */ |
| 854 | true, /* la_store_sym_names_in_linkage_form_p */ |
| 855 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 856 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
| 857 | NULL, /* Language specific symbol demangler */ |
| 858 | NULL, |
| 859 | NULL, /* Language specific |
| 860 | class_name_from_physname */ |
| 861 | c_op_print_tab, /* expression operators for printing */ |
| 862 | 1, /* c-style arrays */ |
| 863 | 0, /* String lower bound */ |
| 864 | default_word_break_characters, |
| 865 | default_collect_symbol_completion_matches, |
| 866 | c_language_arch_info, |
| 867 | default_print_array_index, |
| 868 | default_pass_by_reference, |
| 869 | c_get_string, |
| 870 | c_watch_location_expression, |
| 871 | NULL, /* la_get_symbol_name_matcher */ |
| 872 | iterate_over_symbols, |
| 873 | default_search_name_hash, |
| 874 | &c_varobj_ops, |
| 875 | c_get_compile_context, |
| 876 | c_compute_program, |
| 877 | LANG_MAGIC |
| 878 | }; |
| 879 | |
| 880 | enum cplus_primitive_types { |
| 881 | cplus_primitive_type_int, |
| 882 | cplus_primitive_type_long, |
| 883 | cplus_primitive_type_short, |
| 884 | cplus_primitive_type_char, |
| 885 | cplus_primitive_type_float, |
| 886 | cplus_primitive_type_double, |
| 887 | cplus_primitive_type_void, |
| 888 | cplus_primitive_type_long_long, |
| 889 | cplus_primitive_type_signed_char, |
| 890 | cplus_primitive_type_unsigned_char, |
| 891 | cplus_primitive_type_unsigned_short, |
| 892 | cplus_primitive_type_unsigned_int, |
| 893 | cplus_primitive_type_unsigned_long, |
| 894 | cplus_primitive_type_unsigned_long_long, |
| 895 | cplus_primitive_type_long_double, |
| 896 | cplus_primitive_type_complex, |
| 897 | cplus_primitive_type_double_complex, |
| 898 | cplus_primitive_type_bool, |
| 899 | cplus_primitive_type_decfloat, |
| 900 | cplus_primitive_type_decdouble, |
| 901 | cplus_primitive_type_declong, |
| 902 | cplus_primitive_type_char16_t, |
| 903 | cplus_primitive_type_char32_t, |
| 904 | cplus_primitive_type_wchar_t, |
| 905 | nr_cplus_primitive_types |
| 906 | }; |
| 907 | |
| 908 | static void |
| 909 | cplus_language_arch_info (struct gdbarch *gdbarch, |
| 910 | struct language_arch_info *lai) |
| 911 | { |
| 912 | const struct builtin_type *builtin = builtin_type (gdbarch); |
| 913 | |
| 914 | lai->string_char_type = builtin->builtin_char; |
| 915 | lai->primitive_type_vector |
| 916 | = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_cplus_primitive_types + 1, |
| 917 | struct type *); |
| 918 | lai->primitive_type_vector [cplus_primitive_type_int] |
| 919 | = builtin->builtin_int; |
| 920 | lai->primitive_type_vector [cplus_primitive_type_long] |
| 921 | = builtin->builtin_long; |
| 922 | lai->primitive_type_vector [cplus_primitive_type_short] |
| 923 | = builtin->builtin_short; |
| 924 | lai->primitive_type_vector [cplus_primitive_type_char] |
| 925 | = builtin->builtin_char; |
| 926 | lai->primitive_type_vector [cplus_primitive_type_float] |
| 927 | = builtin->builtin_float; |
| 928 | lai->primitive_type_vector [cplus_primitive_type_double] |
| 929 | = builtin->builtin_double; |
| 930 | lai->primitive_type_vector [cplus_primitive_type_void] |
| 931 | = builtin->builtin_void; |
| 932 | lai->primitive_type_vector [cplus_primitive_type_long_long] |
| 933 | = builtin->builtin_long_long; |
| 934 | lai->primitive_type_vector [cplus_primitive_type_signed_char] |
| 935 | = builtin->builtin_signed_char; |
| 936 | lai->primitive_type_vector [cplus_primitive_type_unsigned_char] |
| 937 | = builtin->builtin_unsigned_char; |
| 938 | lai->primitive_type_vector [cplus_primitive_type_unsigned_short] |
| 939 | = builtin->builtin_unsigned_short; |
| 940 | lai->primitive_type_vector [cplus_primitive_type_unsigned_int] |
| 941 | = builtin->builtin_unsigned_int; |
| 942 | lai->primitive_type_vector [cplus_primitive_type_unsigned_long] |
| 943 | = builtin->builtin_unsigned_long; |
| 944 | lai->primitive_type_vector [cplus_primitive_type_unsigned_long_long] |
| 945 | = builtin->builtin_unsigned_long_long; |
| 946 | lai->primitive_type_vector [cplus_primitive_type_long_double] |
| 947 | = builtin->builtin_long_double; |
| 948 | lai->primitive_type_vector [cplus_primitive_type_complex] |
| 949 | = builtin->builtin_complex; |
| 950 | lai->primitive_type_vector [cplus_primitive_type_double_complex] |
| 951 | = builtin->builtin_double_complex; |
| 952 | lai->primitive_type_vector [cplus_primitive_type_bool] |
| 953 | = builtin->builtin_bool; |
| 954 | lai->primitive_type_vector [cplus_primitive_type_decfloat] |
| 955 | = builtin->builtin_decfloat; |
| 956 | lai->primitive_type_vector [cplus_primitive_type_decdouble] |
| 957 | = builtin->builtin_decdouble; |
| 958 | lai->primitive_type_vector [cplus_primitive_type_declong] |
| 959 | = builtin->builtin_declong; |
| 960 | lai->primitive_type_vector [cplus_primitive_type_char16_t] |
| 961 | = builtin->builtin_char16; |
| 962 | lai->primitive_type_vector [cplus_primitive_type_char32_t] |
| 963 | = builtin->builtin_char32; |
| 964 | lai->primitive_type_vector [cplus_primitive_type_wchar_t] |
| 965 | = builtin->builtin_wchar; |
| 966 | |
| 967 | lai->bool_type_symbol = "bool"; |
| 968 | lai->bool_type_default = builtin->builtin_bool; |
| 969 | } |
| 970 | |
| 971 | static const char *cplus_extensions[] = |
| 972 | { |
| 973 | ".C", ".cc", ".cp", ".cpp", ".cxx", ".c++", NULL |
| 974 | }; |
| 975 | |
| 976 | extern const struct language_defn cplus_language_defn = |
| 977 | { |
| 978 | "c++", /* Language name */ |
| 979 | "C++", |
| 980 | language_cplus, |
| 981 | range_check_off, |
| 982 | case_sensitive_on, |
| 983 | array_row_major, |
| 984 | macro_expansion_c, |
| 985 | cplus_extensions, |
| 986 | &exp_descriptor_c, |
| 987 | c_parse, |
| 988 | null_post_parser, |
| 989 | c_printchar, /* Print a character constant */ |
| 990 | c_printstr, /* Function to print string constant */ |
| 991 | c_emit_char, /* Print a single char */ |
| 992 | c_print_type, /* Print a type using appropriate syntax */ |
| 993 | c_print_typedef, /* Print a typedef using appropriate syntax */ |
| 994 | c_val_print, /* Print a value using appropriate syntax */ |
| 995 | c_value_print, /* Print a top-level value */ |
| 996 | default_read_var_value, /* la_read_var_value */ |
| 997 | cplus_skip_trampoline, /* Language specific skip_trampoline */ |
| 998 | "this", /* name_of_this */ |
| 999 | false, /* la_store_sym_names_in_linkage_form_p */ |
| 1000 | cp_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 1001 | cp_lookup_transparent_type, /* lookup_transparent_type */ |
| 1002 | gdb_demangle, /* Language specific symbol demangler */ |
| 1003 | gdb_sniff_from_mangled_name, |
| 1004 | cp_class_name_from_physname, /* Language specific |
| 1005 | class_name_from_physname */ |
| 1006 | c_op_print_tab, /* expression operators for printing */ |
| 1007 | 1, /* c-style arrays */ |
| 1008 | 0, /* String lower bound */ |
| 1009 | default_word_break_characters, |
| 1010 | default_collect_symbol_completion_matches, |
| 1011 | cplus_language_arch_info, |
| 1012 | default_print_array_index, |
| 1013 | cp_pass_by_reference, |
| 1014 | c_get_string, |
| 1015 | c_watch_location_expression, |
| 1016 | cp_get_symbol_name_matcher, |
| 1017 | iterate_over_symbols, |
| 1018 | cp_search_name_hash, |
| 1019 | &cplus_varobj_ops, |
| 1020 | cplus_get_compile_context, |
| 1021 | cplus_compute_program, |
| 1022 | LANG_MAGIC |
| 1023 | }; |
| 1024 | |
| 1025 | static const char *asm_extensions[] = |
| 1026 | { |
| 1027 | ".s", ".sx", ".S", NULL |
| 1028 | }; |
| 1029 | |
| 1030 | extern const struct language_defn asm_language_defn = |
| 1031 | { |
| 1032 | "asm", /* Language name */ |
| 1033 | "assembly", |
| 1034 | language_asm, |
| 1035 | range_check_off, |
| 1036 | case_sensitive_on, |
| 1037 | array_row_major, |
| 1038 | macro_expansion_c, |
| 1039 | asm_extensions, |
| 1040 | &exp_descriptor_c, |
| 1041 | c_parse, |
| 1042 | null_post_parser, |
| 1043 | c_printchar, /* Print a character constant */ |
| 1044 | c_printstr, /* Function to print string constant */ |
| 1045 | c_emit_char, /* Print a single char */ |
| 1046 | c_print_type, /* Print a type using appropriate syntax */ |
| 1047 | c_print_typedef, /* Print a typedef using appropriate syntax */ |
| 1048 | c_val_print, /* Print a value using appropriate syntax */ |
| 1049 | c_value_print, /* Print a top-level value */ |
| 1050 | default_read_var_value, /* la_read_var_value */ |
| 1051 | NULL, /* Language specific skip_trampoline */ |
| 1052 | NULL, /* name_of_this */ |
| 1053 | true, /* la_store_sym_names_in_linkage_form_p */ |
| 1054 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 1055 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
| 1056 | NULL, /* Language specific symbol demangler */ |
| 1057 | NULL, |
| 1058 | NULL, /* Language specific |
| 1059 | class_name_from_physname */ |
| 1060 | c_op_print_tab, /* expression operators for printing */ |
| 1061 | 1, /* c-style arrays */ |
| 1062 | 0, /* String lower bound */ |
| 1063 | default_word_break_characters, |
| 1064 | default_collect_symbol_completion_matches, |
| 1065 | c_language_arch_info, /* FIXME: la_language_arch_info. */ |
| 1066 | default_print_array_index, |
| 1067 | default_pass_by_reference, |
| 1068 | c_get_string, |
| 1069 | c_watch_location_expression, |
| 1070 | NULL, /* la_get_symbol_name_matcher */ |
| 1071 | iterate_over_symbols, |
| 1072 | default_search_name_hash, |
| 1073 | &default_varobj_ops, |
| 1074 | NULL, |
| 1075 | NULL, |
| 1076 | LANG_MAGIC |
| 1077 | }; |
| 1078 | |
| 1079 | /* The following language_defn does not represent a real language. |
| 1080 | It just provides a minimal support a-la-C that should allow users |
| 1081 | to do some simple operations when debugging applications that use |
| 1082 | a language currently not supported by GDB. */ |
| 1083 | |
| 1084 | extern const struct language_defn minimal_language_defn = |
| 1085 | { |
| 1086 | "minimal", /* Language name */ |
| 1087 | "Minimal", |
| 1088 | language_minimal, |
| 1089 | range_check_off, |
| 1090 | case_sensitive_on, |
| 1091 | array_row_major, |
| 1092 | macro_expansion_c, |
| 1093 | NULL, |
| 1094 | &exp_descriptor_c, |
| 1095 | c_parse, |
| 1096 | null_post_parser, |
| 1097 | c_printchar, /* Print a character constant */ |
| 1098 | c_printstr, /* Function to print string constant */ |
| 1099 | c_emit_char, /* Print a single char */ |
| 1100 | c_print_type, /* Print a type using appropriate syntax */ |
| 1101 | c_print_typedef, /* Print a typedef using appropriate syntax */ |
| 1102 | c_val_print, /* Print a value using appropriate syntax */ |
| 1103 | c_value_print, /* Print a top-level value */ |
| 1104 | default_read_var_value, /* la_read_var_value */ |
| 1105 | NULL, /* Language specific skip_trampoline */ |
| 1106 | NULL, /* name_of_this */ |
| 1107 | true, /* la_store_sym_names_in_linkage_form_p */ |
| 1108 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 1109 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
| 1110 | NULL, /* Language specific symbol demangler */ |
| 1111 | NULL, |
| 1112 | NULL, /* Language specific |
| 1113 | class_name_from_physname */ |
| 1114 | c_op_print_tab, /* expression operators for printing */ |
| 1115 | 1, /* c-style arrays */ |
| 1116 | 0, /* String lower bound */ |
| 1117 | default_word_break_characters, |
| 1118 | default_collect_symbol_completion_matches, |
| 1119 | c_language_arch_info, |
| 1120 | default_print_array_index, |
| 1121 | default_pass_by_reference, |
| 1122 | c_get_string, |
| 1123 | c_watch_location_expression, |
| 1124 | NULL, /* la_get_symbol_name_matcher */ |
| 1125 | iterate_over_symbols, |
| 1126 | default_search_name_hash, |
| 1127 | &default_varobj_ops, |
| 1128 | NULL, |
| 1129 | NULL, |
| 1130 | LANG_MAGIC |
| 1131 | }; |