| 1 | /* C language support routines for GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2002, 2003, |
| 4 | 2004, 2005, 2007, 2008, 2009 Free Software Foundation, Inc. |
| 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 3 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, see <http://www.gnu.org/licenses/>. */ |
| 20 | |
| 21 | #include "defs.h" |
| 22 | #include "symtab.h" |
| 23 | #include "gdbtypes.h" |
| 24 | #include "expression.h" |
| 25 | #include "parser-defs.h" |
| 26 | #include "language.h" |
| 27 | #include "c-lang.h" |
| 28 | #include "valprint.h" |
| 29 | #include "macroscope.h" |
| 30 | #include "gdb_assert.h" |
| 31 | #include "charset.h" |
| 32 | #include "gdb_string.h" |
| 33 | #include "demangle.h" |
| 34 | #include "cp-abi.h" |
| 35 | #include "cp-support.h" |
| 36 | #include "gdb_obstack.h" |
| 37 | #include <ctype.h> |
| 38 | |
| 39 | extern void _initialize_c_language (void); |
| 40 | |
| 41 | /* Given a C string type, STR_TYPE, return the corresponding target |
| 42 | character set name. */ |
| 43 | |
| 44 | static const char * |
| 45 | charset_for_string_type (enum c_string_type str_type) |
| 46 | { |
| 47 | switch (str_type & ~C_CHAR) |
| 48 | { |
| 49 | case C_STRING: |
| 50 | return target_charset (); |
| 51 | case C_WIDE_STRING: |
| 52 | return target_wide_charset (); |
| 53 | case C_STRING_16: |
| 54 | /* FIXME: UCS-2 is not always correct. */ |
| 55 | if (gdbarch_byte_order (current_gdbarch) == BFD_ENDIAN_BIG) |
| 56 | return "UCS-2BE"; |
| 57 | else |
| 58 | return "UCS-2LE"; |
| 59 | case C_STRING_32: |
| 60 | /* FIXME: UCS-4 is not always correct. */ |
| 61 | if (gdbarch_byte_order (current_gdbarch) == BFD_ENDIAN_BIG) |
| 62 | return "UCS-4BE"; |
| 63 | else |
| 64 | return "UCS-4LE"; |
| 65 | } |
| 66 | internal_error (__FILE__, __LINE__, "unhandled c_string_type"); |
| 67 | } |
| 68 | |
| 69 | /* Classify ELTTYPE according to what kind of character it is. Return |
| 70 | the enum constant representing the character type. Also set |
| 71 | *ENCODING to the name of the character set to use when converting |
| 72 | characters of this type to the host character set. */ |
| 73 | |
| 74 | static enum c_string_type |
| 75 | classify_type (struct type *elttype, const char **encoding) |
| 76 | { |
| 77 | struct type *saved_type; |
| 78 | enum c_string_type result; |
| 79 | |
| 80 | /* We do one or two passes -- one on ELTTYPE, and then maybe a |
| 81 | second one on a typedef target. */ |
| 82 | do |
| 83 | { |
| 84 | char *name = TYPE_NAME (elttype); |
| 85 | |
| 86 | if (TYPE_CODE (elttype) == TYPE_CODE_CHAR || !name) |
| 87 | { |
| 88 | result = C_CHAR; |
| 89 | goto done; |
| 90 | } |
| 91 | |
| 92 | if (!strcmp (name, "wchar_t")) |
| 93 | { |
| 94 | result = C_WIDE_CHAR; |
| 95 | goto done; |
| 96 | } |
| 97 | |
| 98 | if (!strcmp (name, "char16_t")) |
| 99 | { |
| 100 | result = C_CHAR_16; |
| 101 | goto done; |
| 102 | } |
| 103 | |
| 104 | if (!strcmp (name, "char32_t")) |
| 105 | { |
| 106 | result = C_CHAR_32; |
| 107 | goto done; |
| 108 | } |
| 109 | |
| 110 | saved_type = elttype; |
| 111 | CHECK_TYPEDEF (elttype); |
| 112 | } |
| 113 | while (elttype != saved_type); |
| 114 | |
| 115 | /* Punt. */ |
| 116 | result = C_CHAR; |
| 117 | |
| 118 | done: |
| 119 | *encoding = charset_for_string_type (result); |
| 120 | return result; |
| 121 | } |
| 122 | |
| 123 | /* Return true if print_wchar can display W without resorting to a |
| 124 | numeric escape, false otherwise. */ |
| 125 | |
| 126 | static int |
| 127 | wchar_printable (gdb_wchar_t w) |
| 128 | { |
| 129 | return (gdb_iswprint (w) |
| 130 | || w == LCST ('\a') || w == LCST ('\b') |
| 131 | || w == LCST ('\f') || w == LCST ('\n') |
| 132 | || w == LCST ('\r') || w == LCST ('\t') |
| 133 | || w == LCST ('\v')); |
| 134 | } |
| 135 | |
| 136 | /* A helper function that converts the contents of STRING to wide |
| 137 | characters and then appends them to OUTPUT. */ |
| 138 | |
| 139 | static void |
| 140 | append_string_as_wide (const char *string, struct obstack *output) |
| 141 | { |
| 142 | for (; *string; ++string) |
| 143 | { |
| 144 | gdb_wchar_t w = gdb_btowc (*string); |
| 145 | obstack_grow (output, &w, sizeof (gdb_wchar_t)); |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | /* Print a wide character W to OUTPUT. ORIG is a pointer to the |
| 150 | original (target) bytes representing the character, ORIG_LEN is the |
| 151 | number of valid bytes. WIDTH is the number of bytes in a base |
| 152 | characters of the type. OUTPUT is an obstack to which wide |
| 153 | characters are emitted. QUOTER is a (narrow) character indicating |
| 154 | the style of quotes surrounding the character to be printed. |
| 155 | NEED_ESCAPE is an in/out flag which is used to track numeric |
| 156 | escapes across calls. */ |
| 157 | |
| 158 | static void |
| 159 | print_wchar (gdb_wint_t w, const gdb_byte *orig, int orig_len, |
| 160 | int width, struct obstack *output, int quoter, |
| 161 | int *need_escapep) |
| 162 | { |
| 163 | int need_escape = *need_escapep; |
| 164 | *need_escapep = 0; |
| 165 | if (gdb_iswprint (w) && (!need_escape || (!gdb_iswdigit (w) |
| 166 | && w != LCST ('8') |
| 167 | && w != LCST ('9')))) |
| 168 | { |
| 169 | gdb_wchar_t wchar = w; |
| 170 | |
| 171 | if (w == gdb_btowc (quoter) || w == LCST ('\\')) |
| 172 | obstack_grow_wstr (output, LCST ("\\")); |
| 173 | obstack_grow (output, &wchar, sizeof (gdb_wchar_t)); |
| 174 | } |
| 175 | else |
| 176 | { |
| 177 | switch (w) |
| 178 | { |
| 179 | case LCST ('\a'): |
| 180 | obstack_grow_wstr (output, LCST ("\\a")); |
| 181 | break; |
| 182 | case LCST ('\b'): |
| 183 | obstack_grow_wstr (output, LCST ("\\b")); |
| 184 | break; |
| 185 | case LCST ('\f'): |
| 186 | obstack_grow_wstr (output, LCST ("\\f")); |
| 187 | break; |
| 188 | case LCST ('\n'): |
| 189 | obstack_grow_wstr (output, LCST ("\\n")); |
| 190 | break; |
| 191 | case LCST ('\r'): |
| 192 | obstack_grow_wstr (output, LCST ("\\r")); |
| 193 | break; |
| 194 | case LCST ('\t'): |
| 195 | obstack_grow_wstr (output, LCST ("\\t")); |
| 196 | break; |
| 197 | case LCST ('\v'): |
| 198 | obstack_grow_wstr (output, LCST ("\\v")); |
| 199 | break; |
| 200 | default: |
| 201 | { |
| 202 | int i; |
| 203 | |
| 204 | for (i = 0; i + width <= orig_len; i += width) |
| 205 | { |
| 206 | char octal[30]; |
| 207 | ULONGEST value = extract_unsigned_integer (&orig[i], width); |
| 208 | sprintf (octal, "\\%lo", (long) value); |
| 209 | append_string_as_wide (octal, output); |
| 210 | } |
| 211 | /* If we somehow have extra bytes, print them now. */ |
| 212 | while (i < orig_len) |
| 213 | { |
| 214 | char octal[5]; |
| 215 | sprintf (octal, "\\%.3o", orig[i] & 0xff); |
| 216 | append_string_as_wide (octal, output); |
| 217 | ++i; |
| 218 | } |
| 219 | |
| 220 | *need_escapep = 1; |
| 221 | } |
| 222 | break; |
| 223 | } |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | /* Print the character C on STREAM as part of the contents of a literal |
| 228 | string whose delimiter is QUOTER. Note that that format for printing |
| 229 | characters and strings is language specific. */ |
| 230 | |
| 231 | static void |
| 232 | c_emit_char (int c, struct type *type, struct ui_file *stream, int quoter) |
| 233 | { |
| 234 | struct obstack wchar_buf, output; |
| 235 | struct cleanup *cleanups; |
| 236 | const char *encoding; |
| 237 | gdb_byte *buf; |
| 238 | struct wchar_iterator *iter; |
| 239 | int need_escape = 0; |
| 240 | |
| 241 | classify_type (type, &encoding); |
| 242 | |
| 243 | buf = alloca (TYPE_LENGTH (type)); |
| 244 | pack_long (buf, type, c); |
| 245 | |
| 246 | iter = make_wchar_iterator (buf, TYPE_LENGTH (type), encoding, |
| 247 | TYPE_LENGTH (type)); |
| 248 | cleanups = make_cleanup_wchar_iterator (iter); |
| 249 | |
| 250 | /* This holds the printable form of the wchar_t data. */ |
| 251 | obstack_init (&wchar_buf); |
| 252 | make_cleanup_obstack_free (&wchar_buf); |
| 253 | |
| 254 | while (1) |
| 255 | { |
| 256 | int num_chars; |
| 257 | gdb_wchar_t *chars; |
| 258 | const gdb_byte *buf; |
| 259 | size_t buflen; |
| 260 | int print_escape = 1; |
| 261 | enum wchar_iterate_result result; |
| 262 | |
| 263 | num_chars = wchar_iterate (iter, &result, &chars, &buf, &buflen); |
| 264 | if (num_chars < 0) |
| 265 | break; |
| 266 | if (num_chars > 0) |
| 267 | { |
| 268 | /* If all characters are printable, print them. Otherwise, |
| 269 | we're going to have to print an escape sequence. We |
| 270 | check all characters because we want to print the target |
| 271 | bytes in the escape sequence, and we don't know character |
| 272 | boundaries there. */ |
| 273 | int i; |
| 274 | |
| 275 | print_escape = 0; |
| 276 | for (i = 0; i < num_chars; ++i) |
| 277 | if (!wchar_printable (chars[i])) |
| 278 | { |
| 279 | print_escape = 1; |
| 280 | break; |
| 281 | } |
| 282 | |
| 283 | if (!print_escape) |
| 284 | { |
| 285 | for (i = 0; i < num_chars; ++i) |
| 286 | print_wchar (chars[i], buf, buflen, TYPE_LENGTH (type), |
| 287 | &wchar_buf, quoter, &need_escape); |
| 288 | } |
| 289 | } |
| 290 | |
| 291 | /* This handles the NUM_CHARS == 0 case as well. */ |
| 292 | if (print_escape) |
| 293 | print_wchar (gdb_WEOF, buf, buflen, TYPE_LENGTH (type), &wchar_buf, |
| 294 | quoter, &need_escape); |
| 295 | } |
| 296 | |
| 297 | /* The output in the host encoding. */ |
| 298 | obstack_init (&output); |
| 299 | make_cleanup_obstack_free (&output); |
| 300 | |
| 301 | convert_between_encodings (INTERMEDIATE_ENCODING, host_charset (), |
| 302 | obstack_base (&wchar_buf), |
| 303 | obstack_object_size (&wchar_buf), |
| 304 | 1, &output, translit_char); |
| 305 | obstack_1grow (&output, '\0'); |
| 306 | |
| 307 | fputs_filtered (obstack_base (&output), stream); |
| 308 | |
| 309 | do_cleanups (cleanups); |
| 310 | } |
| 311 | |
| 312 | void |
| 313 | c_printchar (int c, struct type *type, struct ui_file *stream) |
| 314 | { |
| 315 | enum c_string_type str_type; |
| 316 | const char *encoding; |
| 317 | |
| 318 | str_type = classify_type (type, &encoding); |
| 319 | switch (str_type) |
| 320 | { |
| 321 | case C_CHAR: |
| 322 | break; |
| 323 | case C_WIDE_CHAR: |
| 324 | fputc_filtered ('L', stream); |
| 325 | break; |
| 326 | case C_CHAR_16: |
| 327 | fputc_filtered ('u', stream); |
| 328 | break; |
| 329 | case C_CHAR_32: |
| 330 | fputc_filtered ('U', stream); |
| 331 | break; |
| 332 | } |
| 333 | |
| 334 | fputc_filtered ('\'', stream); |
| 335 | LA_EMIT_CHAR (c, type, stream, '\''); |
| 336 | fputc_filtered ('\'', stream); |
| 337 | } |
| 338 | |
| 339 | /* Print the character string STRING, printing at most LENGTH characters. |
| 340 | LENGTH is -1 if the string is nul terminated. Each character is WIDTH bytes |
| 341 | long. Printing stops early if the number hits print_max; repeat counts are |
| 342 | printed as appropriate. Print ellipses at the end if we had to stop before |
| 343 | printing LENGTH characters, or if FORCE_ELLIPSES. */ |
| 344 | |
| 345 | void |
| 346 | c_printstr (struct ui_file *stream, struct type *type, const gdb_byte *string, |
| 347 | unsigned int length, int force_ellipses, |
| 348 | const struct value_print_options *options) |
| 349 | { |
| 350 | unsigned int i; |
| 351 | unsigned int things_printed = 0; |
| 352 | int in_quotes = 0; |
| 353 | int need_comma = 0; |
| 354 | int width = TYPE_LENGTH (type); |
| 355 | struct obstack wchar_buf, output; |
| 356 | struct cleanup *cleanup; |
| 357 | enum c_string_type str_type; |
| 358 | const char *encoding; |
| 359 | struct wchar_iterator *iter; |
| 360 | int finished = 0; |
| 361 | int need_escape = 0; |
| 362 | |
| 363 | /* If the string was not truncated due to `set print elements', and |
| 364 | the last byte of it is a null, we don't print that, in traditional C |
| 365 | style. */ |
| 366 | if (!force_ellipses |
| 367 | && length > 0 |
| 368 | && (extract_unsigned_integer (string + (length - 1) * width, width) == 0)) |
| 369 | length--; |
| 370 | |
| 371 | str_type = classify_type (type, &encoding) & ~C_CHAR; |
| 372 | switch (str_type) |
| 373 | { |
| 374 | case C_STRING: |
| 375 | break; |
| 376 | case C_WIDE_STRING: |
| 377 | fputs_filtered ("L", stream); |
| 378 | break; |
| 379 | case C_STRING_16: |
| 380 | fputs_filtered ("u", stream); |
| 381 | break; |
| 382 | case C_STRING_32: |
| 383 | fputs_filtered ("U", stream); |
| 384 | break; |
| 385 | } |
| 386 | |
| 387 | if (length == 0) |
| 388 | { |
| 389 | fputs_filtered ("\"\"", stream); |
| 390 | return; |
| 391 | } |
| 392 | |
| 393 | if (length == -1) |
| 394 | { |
| 395 | unsigned long current_char = 1; |
| 396 | for (i = 0; current_char; ++i) |
| 397 | { |
| 398 | QUIT; |
| 399 | current_char = extract_unsigned_integer (string + i * width, width); |
| 400 | } |
| 401 | length = i; |
| 402 | } |
| 403 | |
| 404 | /* Arrange to iterate over the characters, in wchar_t form. */ |
| 405 | iter = make_wchar_iterator (string, length * width, encoding, width); |
| 406 | cleanup = make_cleanup_wchar_iterator (iter); |
| 407 | |
| 408 | /* WCHAR_BUF is the obstack we use to represent the string in |
| 409 | wchar_t form. */ |
| 410 | obstack_init (&wchar_buf); |
| 411 | make_cleanup_obstack_free (&wchar_buf); |
| 412 | |
| 413 | while (!finished && things_printed < options->print_max) |
| 414 | { |
| 415 | int num_chars; |
| 416 | enum wchar_iterate_result result; |
| 417 | gdb_wchar_t *chars; |
| 418 | const gdb_byte *buf; |
| 419 | size_t buflen; |
| 420 | |
| 421 | QUIT; |
| 422 | |
| 423 | if (need_comma) |
| 424 | { |
| 425 | obstack_grow_wstr (&wchar_buf, LCST (", ")); |
| 426 | need_comma = 0; |
| 427 | } |
| 428 | |
| 429 | num_chars = wchar_iterate (iter, &result, &chars, &buf, &buflen); |
| 430 | /* We only look at repetitions when we were able to convert a |
| 431 | single character in isolation. This makes the code simpler |
| 432 | and probably does the sensible thing in the majority of |
| 433 | cases. */ |
| 434 | while (num_chars == 1) |
| 435 | { |
| 436 | /* Count the number of repetitions. */ |
| 437 | unsigned int reps = 0; |
| 438 | gdb_wchar_t current_char = chars[0]; |
| 439 | const gdb_byte *orig_buf = buf; |
| 440 | int orig_len = buflen; |
| 441 | |
| 442 | if (need_comma) |
| 443 | { |
| 444 | obstack_grow_wstr (&wchar_buf, LCST (", ")); |
| 445 | need_comma = 0; |
| 446 | } |
| 447 | |
| 448 | while (num_chars == 1 && current_char == chars[0]) |
| 449 | { |
| 450 | num_chars = wchar_iterate (iter, &result, &chars, &buf, &buflen); |
| 451 | ++reps; |
| 452 | } |
| 453 | |
| 454 | /* Emit CURRENT_CHAR according to the repetition count and |
| 455 | options. */ |
| 456 | if (reps > options->repeat_count_threshold) |
| 457 | { |
| 458 | if (in_quotes) |
| 459 | { |
| 460 | if (options->inspect_it) |
| 461 | obstack_grow_wstr (&wchar_buf, LCST ("\\\", ")); |
| 462 | else |
| 463 | obstack_grow_wstr (&wchar_buf, LCST ("\", ")); |
| 464 | in_quotes = 0; |
| 465 | } |
| 466 | obstack_grow_wstr (&wchar_buf, LCST ("'")); |
| 467 | need_escape = 0; |
| 468 | print_wchar (current_char, orig_buf, orig_len, width, |
| 469 | &wchar_buf, '\'', &need_escape); |
| 470 | obstack_grow_wstr (&wchar_buf, LCST ("'")); |
| 471 | { |
| 472 | /* Painful gyrations. */ |
| 473 | int j; |
| 474 | char *s = xstrprintf (_(" <repeats %u times>"), reps); |
| 475 | for (j = 0; s[j]; ++j) |
| 476 | { |
| 477 | gdb_wchar_t w = gdb_btowc (s[j]); |
| 478 | obstack_grow (&wchar_buf, &w, sizeof (gdb_wchar_t)); |
| 479 | } |
| 480 | xfree (s); |
| 481 | } |
| 482 | things_printed += options->repeat_count_threshold; |
| 483 | need_comma = 1; |
| 484 | } |
| 485 | else |
| 486 | { |
| 487 | /* Saw the character one or more times, but fewer than |
| 488 | the repetition threshold. */ |
| 489 | if (!in_quotes) |
| 490 | { |
| 491 | if (options->inspect_it) |
| 492 | obstack_grow_wstr (&wchar_buf, LCST ("\\\"")); |
| 493 | else |
| 494 | obstack_grow_wstr (&wchar_buf, LCST ("\"")); |
| 495 | in_quotes = 1; |
| 496 | need_escape = 0; |
| 497 | } |
| 498 | |
| 499 | while (reps-- > 0) |
| 500 | { |
| 501 | print_wchar (current_char, orig_buf, orig_len, width, |
| 502 | &wchar_buf, '"', &need_escape); |
| 503 | ++things_printed; |
| 504 | } |
| 505 | } |
| 506 | } |
| 507 | |
| 508 | /* NUM_CHARS and the other outputs from wchar_iterate are valid |
| 509 | here regardless of which branch was taken above. */ |
| 510 | if (num_chars < 0) |
| 511 | { |
| 512 | /* Hit EOF. */ |
| 513 | finished = 1; |
| 514 | break; |
| 515 | } |
| 516 | |
| 517 | switch (result) |
| 518 | { |
| 519 | case wchar_iterate_invalid: |
| 520 | if (!in_quotes) |
| 521 | { |
| 522 | if (options->inspect_it) |
| 523 | obstack_grow_wstr (&wchar_buf, LCST ("\\\"")); |
| 524 | else |
| 525 | obstack_grow_wstr (&wchar_buf, LCST ("\"")); |
| 526 | in_quotes = 1; |
| 527 | } |
| 528 | need_escape = 0; |
| 529 | print_wchar (gdb_WEOF, buf, buflen, width, &wchar_buf, |
| 530 | '"', &need_escape); |
| 531 | break; |
| 532 | |
| 533 | case wchar_iterate_incomplete: |
| 534 | if (in_quotes) |
| 535 | { |
| 536 | if (options->inspect_it) |
| 537 | obstack_grow_wstr (&wchar_buf, LCST ("\\\",")); |
| 538 | else |
| 539 | obstack_grow_wstr (&wchar_buf, LCST ("\",")); |
| 540 | in_quotes = 0; |
| 541 | } |
| 542 | obstack_grow_wstr (&wchar_buf, LCST (" <incomplete sequence ")); |
| 543 | print_wchar (gdb_WEOF, buf, buflen, width, &wchar_buf, |
| 544 | 0, &need_escape); |
| 545 | obstack_grow_wstr (&wchar_buf, LCST (">")); |
| 546 | finished = 1; |
| 547 | break; |
| 548 | } |
| 549 | } |
| 550 | |
| 551 | /* Terminate the quotes if necessary. */ |
| 552 | if (in_quotes) |
| 553 | { |
| 554 | if (options->inspect_it) |
| 555 | obstack_grow_wstr (&wchar_buf, LCST ("\\\"")); |
| 556 | else |
| 557 | obstack_grow_wstr (&wchar_buf, LCST ("\"")); |
| 558 | } |
| 559 | |
| 560 | if (force_ellipses || !finished) |
| 561 | obstack_grow_wstr (&wchar_buf, LCST ("...")); |
| 562 | |
| 563 | /* OUTPUT is where we collect `char's for printing. */ |
| 564 | obstack_init (&output); |
| 565 | make_cleanup_obstack_free (&output); |
| 566 | |
| 567 | convert_between_encodings (INTERMEDIATE_ENCODING, host_charset (), |
| 568 | obstack_base (&wchar_buf), |
| 569 | obstack_object_size (&wchar_buf), |
| 570 | 1, &output, translit_char); |
| 571 | obstack_1grow (&output, '\0'); |
| 572 | |
| 573 | fputs_filtered (obstack_base (&output), stream); |
| 574 | |
| 575 | do_cleanups (cleanup); |
| 576 | } |
| 577 | |
| 578 | /* Obtain a C string from the inferior storing it in a newly allocated |
| 579 | buffer in BUFFER, which should be freed by the caller. The string is |
| 580 | read until a null character is found. If VALUE is an array with known |
| 581 | length, the function will not read past the end of the array. LENGTH |
| 582 | will contain the size of the string in bytes (not counting the null |
| 583 | character). |
| 584 | |
| 585 | Assumes strings are terminated by a null character. The size of a character |
| 586 | is determined by the length of the target type of the pointer or array. |
| 587 | This means that a null byte present in a multi-byte character will not |
| 588 | terminate the string unless the whole character is null. |
| 589 | |
| 590 | CHARSET is always set to the target charset. */ |
| 591 | |
| 592 | void |
| 593 | c_get_string (struct value *value, gdb_byte **buffer, int *length, |
| 594 | const char **charset) |
| 595 | { |
| 596 | int err, width; |
| 597 | unsigned int fetchlimit; |
| 598 | struct type *type = check_typedef (value_type (value)); |
| 599 | struct type *element_type = TYPE_TARGET_TYPE (type); |
| 600 | |
| 601 | if (element_type == NULL) |
| 602 | goto error; |
| 603 | |
| 604 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) |
| 605 | { |
| 606 | /* If we know the size of the array, we can use it as a limit on the |
| 607 | number of characters to be fetched. */ |
| 608 | if (TYPE_NFIELDS (type) == 1 |
| 609 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_RANGE) |
| 610 | { |
| 611 | LONGEST low_bound, high_bound; |
| 612 | |
| 613 | get_discrete_bounds (TYPE_FIELD_TYPE (type, 0), |
| 614 | &low_bound, &high_bound); |
| 615 | fetchlimit = high_bound - low_bound + 1; |
| 616 | } |
| 617 | else |
| 618 | fetchlimit = UINT_MAX; |
| 619 | } |
| 620 | else if (TYPE_CODE (type) == TYPE_CODE_PTR) |
| 621 | fetchlimit = UINT_MAX; |
| 622 | else |
| 623 | /* We work only with arrays and pointers. */ |
| 624 | goto error; |
| 625 | |
| 626 | element_type = check_typedef (element_type); |
| 627 | if (TYPE_CODE (element_type) != TYPE_CODE_INT |
| 628 | && TYPE_CODE (element_type) != TYPE_CODE_CHAR) |
| 629 | /* If the elements are not integers or characters, we don't consider it |
| 630 | a string. */ |
| 631 | goto error; |
| 632 | |
| 633 | width = TYPE_LENGTH (element_type); |
| 634 | |
| 635 | /* If the string lives in GDB's memory intead of the inferior's, then we |
| 636 | just need to copy it to BUFFER. Also, since such strings are arrays |
| 637 | with known size, FETCHLIMIT will hold the size of the array. */ |
| 638 | if ((VALUE_LVAL (value) == not_lval |
| 639 | || VALUE_LVAL (value) == lval_internalvar) |
| 640 | && fetchlimit != UINT_MAX) |
| 641 | { |
| 642 | int i; |
| 643 | const gdb_byte *contents = value_contents (value); |
| 644 | |
| 645 | /* Look for a null character. */ |
| 646 | for (i = 0; i < fetchlimit; i++) |
| 647 | if (extract_unsigned_integer (contents + i * width, width) == 0) |
| 648 | break; |
| 649 | |
| 650 | /* I is now either the number of non-null characters, or FETCHLIMIT. */ |
| 651 | *length = i * width; |
| 652 | *buffer = xmalloc (*length); |
| 653 | memcpy (*buffer, contents, *length); |
| 654 | err = 0; |
| 655 | } |
| 656 | else |
| 657 | { |
| 658 | err = read_string (value_as_address (value), -1, width, fetchlimit, |
| 659 | buffer, length); |
| 660 | if (err) |
| 661 | { |
| 662 | xfree (*buffer); |
| 663 | error (_("Error reading string from inferior: %s"), |
| 664 | safe_strerror (err)); |
| 665 | } |
| 666 | } |
| 667 | |
| 668 | /* If the last character is null, subtract it from LENGTH. */ |
| 669 | if (*length > 0 |
| 670 | && extract_unsigned_integer (*buffer + *length - width, width) == 0) |
| 671 | *length -= width; |
| 672 | |
| 673 | *charset = target_charset (); |
| 674 | |
| 675 | return; |
| 676 | |
| 677 | error: |
| 678 | { |
| 679 | char *type_str; |
| 680 | |
| 681 | type_str = type_to_string (type); |
| 682 | if (type_str) |
| 683 | { |
| 684 | make_cleanup (xfree, type_str); |
| 685 | error (_("Trying to read string with inappropriate type `%s'."), |
| 686 | type_str); |
| 687 | } |
| 688 | else |
| 689 | error (_("Trying to read string with inappropriate type.")); |
| 690 | } |
| 691 | } |
| 692 | |
| 693 | \f |
| 694 | /* Evaluating C and C++ expressions. */ |
| 695 | |
| 696 | /* Convert a UCN. The digits of the UCN start at P and extend no |
| 697 | farther than LIMIT. DEST_CHARSET is the name of the character set |
| 698 | into which the UCN should be converted. The results are written to |
| 699 | OUTPUT. LENGTH is the maximum length of the UCN, either 4 or 8. |
| 700 | Returns a pointer to just after the final digit of the UCN. */ |
| 701 | |
| 702 | static char * |
| 703 | convert_ucn (char *p, char *limit, const char *dest_charset, |
| 704 | struct obstack *output, int length) |
| 705 | { |
| 706 | unsigned long result = 0; |
| 707 | gdb_byte data[4]; |
| 708 | int i; |
| 709 | |
| 710 | for (i = 0; i < length && p < limit && isxdigit (*p); ++i, ++p) |
| 711 | result = (result << 4) + host_hex_value (*p); |
| 712 | |
| 713 | for (i = 3; i >= 0; --i) |
| 714 | { |
| 715 | data[i] = result & 0xff; |
| 716 | result >>= 8; |
| 717 | } |
| 718 | |
| 719 | convert_between_encodings ("UCS-4BE", dest_charset, data, 4, 4, output, |
| 720 | translit_none); |
| 721 | |
| 722 | return p; |
| 723 | } |
| 724 | |
| 725 | /* Emit a character, VALUE, which was specified numerically, to |
| 726 | OUTPUT. TYPE is the target character type. */ |
| 727 | |
| 728 | static void |
| 729 | emit_numeric_character (struct type *type, unsigned long value, |
| 730 | struct obstack *output) |
| 731 | { |
| 732 | gdb_byte *buffer; |
| 733 | |
| 734 | buffer = alloca (TYPE_LENGTH (type)); |
| 735 | pack_long (buffer, type, value); |
| 736 | obstack_grow (output, buffer, TYPE_LENGTH (type)); |
| 737 | } |
| 738 | |
| 739 | /* Convert an octal escape sequence. TYPE is the target character |
| 740 | type. The digits of the escape sequence begin at P and extend no |
| 741 | farther than LIMIT. The result is written to OUTPUT. Returns a |
| 742 | pointer to just after the final digit of the escape sequence. */ |
| 743 | |
| 744 | static char * |
| 745 | convert_octal (struct type *type, char *p, char *limit, struct obstack *output) |
| 746 | { |
| 747 | unsigned long value = 0; |
| 748 | |
| 749 | while (p < limit && isdigit (*p) && *p != '8' && *p != '9') |
| 750 | { |
| 751 | value = 8 * value + host_hex_value (*p); |
| 752 | ++p; |
| 753 | } |
| 754 | |
| 755 | emit_numeric_character (type, value, output); |
| 756 | |
| 757 | return p; |
| 758 | } |
| 759 | |
| 760 | /* Convert a hex escape sequence. TYPE is the target character type. |
| 761 | The digits of the escape sequence begin at P and extend no farther |
| 762 | than LIMIT. The result is written to OUTPUT. Returns a pointer to |
| 763 | just after the final digit of the escape sequence. */ |
| 764 | |
| 765 | static char * |
| 766 | convert_hex (struct type *type, char *p, char *limit, struct obstack *output) |
| 767 | { |
| 768 | unsigned long value = 0; |
| 769 | |
| 770 | while (p < limit && isxdigit (*p)) |
| 771 | { |
| 772 | value = 16 * value + host_hex_value (*p); |
| 773 | ++p; |
| 774 | } |
| 775 | |
| 776 | emit_numeric_character (type, value, output); |
| 777 | |
| 778 | return p; |
| 779 | } |
| 780 | |
| 781 | #define ADVANCE \ |
| 782 | do { \ |
| 783 | ++p; \ |
| 784 | if (p == limit) \ |
| 785 | error (_("Malformed escape sequence")); \ |
| 786 | } while (0) |
| 787 | |
| 788 | /* Convert an escape sequence to a target format. TYPE is the target |
| 789 | character type to use, and DEST_CHARSET is the name of the target |
| 790 | character set. The backslash of the escape sequence is at *P, and |
| 791 | the escape sequence will not extend past LIMIT. The results are |
| 792 | written to OUTPUT. Returns a pointer to just past the final |
| 793 | character of the escape sequence. */ |
| 794 | |
| 795 | static char * |
| 796 | convert_escape (struct type *type, const char *dest_charset, |
| 797 | char *p, char *limit, struct obstack *output) |
| 798 | { |
| 799 | /* Skip the backslash. */ |
| 800 | ADVANCE; |
| 801 | |
| 802 | switch (*p) |
| 803 | { |
| 804 | case '\\': |
| 805 | obstack_1grow (output, '\\'); |
| 806 | ++p; |
| 807 | break; |
| 808 | |
| 809 | case 'x': |
| 810 | ADVANCE; |
| 811 | if (!isxdigit (*p)) |
| 812 | error (_("\\x used with no following hex digits.")); |
| 813 | p = convert_hex (type, p, limit, output); |
| 814 | break; |
| 815 | |
| 816 | case '0': |
| 817 | case '1': |
| 818 | case '2': |
| 819 | case '3': |
| 820 | case '4': |
| 821 | case '5': |
| 822 | case '6': |
| 823 | case '7': |
| 824 | p = convert_octal (type, p, limit, output); |
| 825 | break; |
| 826 | |
| 827 | case 'u': |
| 828 | case 'U': |
| 829 | { |
| 830 | int length = *p == 'u' ? 4 : 8; |
| 831 | ADVANCE; |
| 832 | if (!isxdigit (*p)) |
| 833 | error (_("\\u used with no following hex digits")); |
| 834 | p = convert_ucn (p, limit, dest_charset, output, length); |
| 835 | } |
| 836 | } |
| 837 | |
| 838 | return p; |
| 839 | } |
| 840 | |
| 841 | /* Given a single string from a (C-specific) OP_STRING list, convert |
| 842 | it to a target string, handling escape sequences specially. The |
| 843 | output is written to OUTPUT. DATA is the input string, which has |
| 844 | length LEN. DEST_CHARSET is the name of the target character set, |
| 845 | and TYPE is the type of target character to use. */ |
| 846 | |
| 847 | static void |
| 848 | parse_one_string (struct obstack *output, char *data, int len, |
| 849 | const char *dest_charset, struct type *type) |
| 850 | { |
| 851 | char *limit; |
| 852 | |
| 853 | limit = data + len; |
| 854 | |
| 855 | while (data < limit) |
| 856 | { |
| 857 | char *p = data; |
| 858 | /* Look for next escape, or the end of the input. */ |
| 859 | while (p < limit && *p != '\\') |
| 860 | ++p; |
| 861 | /* If we saw a run of characters, convert them all. */ |
| 862 | if (p > data) |
| 863 | convert_between_encodings (host_charset (), dest_charset, |
| 864 | data, p - data, 1, output, translit_none); |
| 865 | /* If we saw an escape, convert it. */ |
| 866 | if (p < limit) |
| 867 | p = convert_escape (type, dest_charset, p, limit, output); |
| 868 | data = p; |
| 869 | } |
| 870 | } |
| 871 | |
| 872 | /* Expression evaluator for the C language family. Most operations |
| 873 | are delegated to evaluate_subexp_standard; see that function for a |
| 874 | description of the arguments. */ |
| 875 | |
| 876 | static struct value * |
| 877 | evaluate_subexp_c (struct type *expect_type, struct expression *exp, |
| 878 | int *pos, enum noside noside) |
| 879 | { |
| 880 | enum exp_opcode op = exp->elts[*pos].opcode; |
| 881 | |
| 882 | switch (op) |
| 883 | { |
| 884 | case OP_STRING: |
| 885 | { |
| 886 | int oplen, limit; |
| 887 | struct type *type; |
| 888 | struct obstack output; |
| 889 | struct cleanup *cleanup; |
| 890 | struct value *result; |
| 891 | enum c_string_type dest_type; |
| 892 | const char *dest_charset; |
| 893 | |
| 894 | obstack_init (&output); |
| 895 | cleanup = make_cleanup_obstack_free (&output); |
| 896 | |
| 897 | ++*pos; |
| 898 | oplen = longest_to_int (exp->elts[*pos].longconst); |
| 899 | |
| 900 | ++*pos; |
| 901 | limit = *pos + BYTES_TO_EXP_ELEM (oplen + 1); |
| 902 | dest_type |
| 903 | = (enum c_string_type) longest_to_int (exp->elts[*pos].longconst); |
| 904 | switch (dest_type & ~C_CHAR) |
| 905 | { |
| 906 | case C_STRING: |
| 907 | type = language_string_char_type (current_language, |
| 908 | current_gdbarch); |
| 909 | break; |
| 910 | case C_WIDE_STRING: |
| 911 | type = lookup_typename ("wchar_t", NULL, 0); |
| 912 | break; |
| 913 | case C_STRING_16: |
| 914 | type = lookup_typename ("char16_t", NULL, 0); |
| 915 | break; |
| 916 | case C_STRING_32: |
| 917 | type = lookup_typename ("char32_t", NULL, 0); |
| 918 | break; |
| 919 | default: |
| 920 | internal_error (__FILE__, __LINE__, "unhandled c_string_type"); |
| 921 | } |
| 922 | |
| 923 | /* Ensure TYPE_LENGTH is valid for TYPE. */ |
| 924 | check_typedef (type); |
| 925 | |
| 926 | dest_charset = charset_for_string_type (dest_type); |
| 927 | |
| 928 | ++*pos; |
| 929 | while (*pos < limit) |
| 930 | { |
| 931 | int len; |
| 932 | |
| 933 | len = longest_to_int (exp->elts[*pos].longconst); |
| 934 | |
| 935 | ++*pos; |
| 936 | if (noside != EVAL_SKIP) |
| 937 | parse_one_string (&output, &exp->elts[*pos].string, len, |
| 938 | dest_charset, type); |
| 939 | *pos += BYTES_TO_EXP_ELEM (len); |
| 940 | } |
| 941 | |
| 942 | /* Skip the trailing length and opcode. */ |
| 943 | *pos += 2; |
| 944 | |
| 945 | if (noside == EVAL_SKIP) |
| 946 | { |
| 947 | /* Return a dummy value of the appropriate type. */ |
| 948 | if ((dest_type & C_CHAR) != 0) |
| 949 | result = allocate_value (type); |
| 950 | else |
| 951 | result = value_typed_string ("", 0, type); |
| 952 | do_cleanups (cleanup); |
| 953 | return result; |
| 954 | } |
| 955 | |
| 956 | if ((dest_type & C_CHAR) != 0) |
| 957 | { |
| 958 | LONGEST value; |
| 959 | |
| 960 | if (obstack_object_size (&output) != TYPE_LENGTH (type)) |
| 961 | error (_("Could not convert character constant to target character set")); |
| 962 | value = unpack_long (type, obstack_base (&output)); |
| 963 | result = value_from_longest (type, value); |
| 964 | } |
| 965 | else |
| 966 | { |
| 967 | int i; |
| 968 | /* Write the terminating character. */ |
| 969 | for (i = 0; i < TYPE_LENGTH (type); ++i) |
| 970 | obstack_1grow (&output, 0); |
| 971 | result = value_typed_string (obstack_base (&output), |
| 972 | obstack_object_size (&output), |
| 973 | type); |
| 974 | } |
| 975 | do_cleanups (cleanup); |
| 976 | return result; |
| 977 | } |
| 978 | break; |
| 979 | |
| 980 | default: |
| 981 | break; |
| 982 | } |
| 983 | return evaluate_subexp_standard (expect_type, exp, pos, noside); |
| 984 | } |
| 985 | |
| 986 | |
| 987 | \f |
| 988 | /* Table mapping opcodes into strings for printing operators |
| 989 | and precedences of the operators. */ |
| 990 | |
| 991 | const struct op_print c_op_print_tab[] = |
| 992 | { |
| 993 | {",", BINOP_COMMA, PREC_COMMA, 0}, |
| 994 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, |
| 995 | {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, |
| 996 | {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, |
| 997 | {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, |
| 998 | {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, |
| 999 | {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, |
| 1000 | {"==", BINOP_EQUAL, PREC_EQUAL, 0}, |
| 1001 | {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, |
| 1002 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, |
| 1003 | {">=", BINOP_GEQ, PREC_ORDER, 0}, |
| 1004 | {">", BINOP_GTR, PREC_ORDER, 0}, |
| 1005 | {"<", BINOP_LESS, PREC_ORDER, 0}, |
| 1006 | {">>", BINOP_RSH, PREC_SHIFT, 0}, |
| 1007 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, |
| 1008 | {"+", BINOP_ADD, PREC_ADD, 0}, |
| 1009 | {"-", BINOP_SUB, PREC_ADD, 0}, |
| 1010 | {"*", BINOP_MUL, PREC_MUL, 0}, |
| 1011 | {"/", BINOP_DIV, PREC_MUL, 0}, |
| 1012 | {"%", BINOP_REM, PREC_MUL, 0}, |
| 1013 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, |
| 1014 | {"-", UNOP_NEG, PREC_PREFIX, 0}, |
| 1015 | {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, |
| 1016 | {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, |
| 1017 | {"*", UNOP_IND, PREC_PREFIX, 0}, |
| 1018 | {"&", UNOP_ADDR, PREC_PREFIX, 0}, |
| 1019 | {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0}, |
| 1020 | {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, |
| 1021 | {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, |
| 1022 | {NULL, 0, 0, 0} |
| 1023 | }; |
| 1024 | \f |
| 1025 | enum c_primitive_types { |
| 1026 | c_primitive_type_int, |
| 1027 | c_primitive_type_long, |
| 1028 | c_primitive_type_short, |
| 1029 | c_primitive_type_char, |
| 1030 | c_primitive_type_float, |
| 1031 | c_primitive_type_double, |
| 1032 | c_primitive_type_void, |
| 1033 | c_primitive_type_long_long, |
| 1034 | c_primitive_type_signed_char, |
| 1035 | c_primitive_type_unsigned_char, |
| 1036 | c_primitive_type_unsigned_short, |
| 1037 | c_primitive_type_unsigned_int, |
| 1038 | c_primitive_type_unsigned_long, |
| 1039 | c_primitive_type_unsigned_long_long, |
| 1040 | c_primitive_type_long_double, |
| 1041 | c_primitive_type_complex, |
| 1042 | c_primitive_type_double_complex, |
| 1043 | c_primitive_type_decfloat, |
| 1044 | c_primitive_type_decdouble, |
| 1045 | c_primitive_type_declong, |
| 1046 | nr_c_primitive_types |
| 1047 | }; |
| 1048 | |
| 1049 | void |
| 1050 | c_language_arch_info (struct gdbarch *gdbarch, |
| 1051 | struct language_arch_info *lai) |
| 1052 | { |
| 1053 | const struct builtin_type *builtin = builtin_type (gdbarch); |
| 1054 | lai->string_char_type = builtin->builtin_char; |
| 1055 | lai->primitive_type_vector |
| 1056 | = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_c_primitive_types + 1, |
| 1057 | struct type *); |
| 1058 | lai->primitive_type_vector [c_primitive_type_int] = builtin->builtin_int; |
| 1059 | lai->primitive_type_vector [c_primitive_type_long] = builtin->builtin_long; |
| 1060 | lai->primitive_type_vector [c_primitive_type_short] = builtin->builtin_short; |
| 1061 | lai->primitive_type_vector [c_primitive_type_char] = builtin->builtin_char; |
| 1062 | lai->primitive_type_vector [c_primitive_type_float] = builtin->builtin_float; |
| 1063 | lai->primitive_type_vector [c_primitive_type_double] = builtin->builtin_double; |
| 1064 | lai->primitive_type_vector [c_primitive_type_void] = builtin->builtin_void; |
| 1065 | lai->primitive_type_vector [c_primitive_type_long_long] = builtin->builtin_long_long; |
| 1066 | lai->primitive_type_vector [c_primitive_type_signed_char] = builtin->builtin_signed_char; |
| 1067 | lai->primitive_type_vector [c_primitive_type_unsigned_char] = builtin->builtin_unsigned_char; |
| 1068 | lai->primitive_type_vector [c_primitive_type_unsigned_short] = builtin->builtin_unsigned_short; |
| 1069 | lai->primitive_type_vector [c_primitive_type_unsigned_int] = builtin->builtin_unsigned_int; |
| 1070 | lai->primitive_type_vector [c_primitive_type_unsigned_long] = builtin->builtin_unsigned_long; |
| 1071 | lai->primitive_type_vector [c_primitive_type_unsigned_long_long] = builtin->builtin_unsigned_long_long; |
| 1072 | lai->primitive_type_vector [c_primitive_type_long_double] = builtin->builtin_long_double; |
| 1073 | lai->primitive_type_vector [c_primitive_type_complex] = builtin->builtin_complex; |
| 1074 | lai->primitive_type_vector [c_primitive_type_double_complex] = builtin->builtin_double_complex; |
| 1075 | lai->primitive_type_vector [c_primitive_type_decfloat] = builtin->builtin_decfloat; |
| 1076 | lai->primitive_type_vector [c_primitive_type_decdouble] = builtin->builtin_decdouble; |
| 1077 | lai->primitive_type_vector [c_primitive_type_declong] = builtin->builtin_declong; |
| 1078 | |
| 1079 | lai->bool_type_default = builtin->builtin_int; |
| 1080 | } |
| 1081 | |
| 1082 | static const struct exp_descriptor exp_descriptor_c = |
| 1083 | { |
| 1084 | print_subexp_standard, |
| 1085 | operator_length_standard, |
| 1086 | op_name_standard, |
| 1087 | dump_subexp_body_standard, |
| 1088 | evaluate_subexp_c |
| 1089 | }; |
| 1090 | |
| 1091 | const struct language_defn c_language_defn = |
| 1092 | { |
| 1093 | "c", /* Language name */ |
| 1094 | language_c, |
| 1095 | range_check_off, |
| 1096 | type_check_off, |
| 1097 | case_sensitive_on, |
| 1098 | array_row_major, |
| 1099 | macro_expansion_c, |
| 1100 | &exp_descriptor_c, |
| 1101 | c_parse, |
| 1102 | c_error, |
| 1103 | null_post_parser, |
| 1104 | c_printchar, /* Print a character constant */ |
| 1105 | c_printstr, /* Function to print string constant */ |
| 1106 | c_emit_char, /* Print a single char */ |
| 1107 | c_print_type, /* Print a type using appropriate syntax */ |
| 1108 | c_print_typedef, /* Print a typedef using appropriate syntax */ |
| 1109 | c_val_print, /* Print a value using appropriate syntax */ |
| 1110 | c_value_print, /* Print a top-level value */ |
| 1111 | NULL, /* Language specific skip_trampoline */ |
| 1112 | NULL, /* name_of_this */ |
| 1113 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 1114 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
| 1115 | NULL, /* Language specific symbol demangler */ |
| 1116 | NULL, /* Language specific class_name_from_physname */ |
| 1117 | c_op_print_tab, /* expression operators for printing */ |
| 1118 | 1, /* c-style arrays */ |
| 1119 | 0, /* String lower bound */ |
| 1120 | default_word_break_characters, |
| 1121 | default_make_symbol_completion_list, |
| 1122 | c_language_arch_info, |
| 1123 | default_print_array_index, |
| 1124 | default_pass_by_reference, |
| 1125 | c_get_string, |
| 1126 | LANG_MAGIC |
| 1127 | }; |
| 1128 | |
| 1129 | enum cplus_primitive_types { |
| 1130 | cplus_primitive_type_int, |
| 1131 | cplus_primitive_type_long, |
| 1132 | cplus_primitive_type_short, |
| 1133 | cplus_primitive_type_char, |
| 1134 | cplus_primitive_type_float, |
| 1135 | cplus_primitive_type_double, |
| 1136 | cplus_primitive_type_void, |
| 1137 | cplus_primitive_type_long_long, |
| 1138 | cplus_primitive_type_signed_char, |
| 1139 | cplus_primitive_type_unsigned_char, |
| 1140 | cplus_primitive_type_unsigned_short, |
| 1141 | cplus_primitive_type_unsigned_int, |
| 1142 | cplus_primitive_type_unsigned_long, |
| 1143 | cplus_primitive_type_unsigned_long_long, |
| 1144 | cplus_primitive_type_long_double, |
| 1145 | cplus_primitive_type_complex, |
| 1146 | cplus_primitive_type_double_complex, |
| 1147 | cplus_primitive_type_bool, |
| 1148 | cplus_primitive_type_decfloat, |
| 1149 | cplus_primitive_type_decdouble, |
| 1150 | cplus_primitive_type_declong, |
| 1151 | nr_cplus_primitive_types |
| 1152 | }; |
| 1153 | |
| 1154 | static void |
| 1155 | cplus_language_arch_info (struct gdbarch *gdbarch, |
| 1156 | struct language_arch_info *lai) |
| 1157 | { |
| 1158 | const struct builtin_type *builtin = builtin_type (gdbarch); |
| 1159 | lai->string_char_type = builtin->builtin_char; |
| 1160 | lai->primitive_type_vector |
| 1161 | = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_cplus_primitive_types + 1, |
| 1162 | struct type *); |
| 1163 | lai->primitive_type_vector [cplus_primitive_type_int] |
| 1164 | = builtin->builtin_int; |
| 1165 | lai->primitive_type_vector [cplus_primitive_type_long] |
| 1166 | = builtin->builtin_long; |
| 1167 | lai->primitive_type_vector [cplus_primitive_type_short] |
| 1168 | = builtin->builtin_short; |
| 1169 | lai->primitive_type_vector [cplus_primitive_type_char] |
| 1170 | = builtin->builtin_char; |
| 1171 | lai->primitive_type_vector [cplus_primitive_type_float] |
| 1172 | = builtin->builtin_float; |
| 1173 | lai->primitive_type_vector [cplus_primitive_type_double] |
| 1174 | = builtin->builtin_double; |
| 1175 | lai->primitive_type_vector [cplus_primitive_type_void] |
| 1176 | = builtin->builtin_void; |
| 1177 | lai->primitive_type_vector [cplus_primitive_type_long_long] |
| 1178 | = builtin->builtin_long_long; |
| 1179 | lai->primitive_type_vector [cplus_primitive_type_signed_char] |
| 1180 | = builtin->builtin_signed_char; |
| 1181 | lai->primitive_type_vector [cplus_primitive_type_unsigned_char] |
| 1182 | = builtin->builtin_unsigned_char; |
| 1183 | lai->primitive_type_vector [cplus_primitive_type_unsigned_short] |
| 1184 | = builtin->builtin_unsigned_short; |
| 1185 | lai->primitive_type_vector [cplus_primitive_type_unsigned_int] |
| 1186 | = builtin->builtin_unsigned_int; |
| 1187 | lai->primitive_type_vector [cplus_primitive_type_unsigned_long] |
| 1188 | = builtin->builtin_unsigned_long; |
| 1189 | lai->primitive_type_vector [cplus_primitive_type_unsigned_long_long] |
| 1190 | = builtin->builtin_unsigned_long_long; |
| 1191 | lai->primitive_type_vector [cplus_primitive_type_long_double] |
| 1192 | = builtin->builtin_long_double; |
| 1193 | lai->primitive_type_vector [cplus_primitive_type_complex] |
| 1194 | = builtin->builtin_complex; |
| 1195 | lai->primitive_type_vector [cplus_primitive_type_double_complex] |
| 1196 | = builtin->builtin_double_complex; |
| 1197 | lai->primitive_type_vector [cplus_primitive_type_bool] |
| 1198 | = builtin->builtin_bool; |
| 1199 | lai->primitive_type_vector [cplus_primitive_type_decfloat] |
| 1200 | = builtin->builtin_decfloat; |
| 1201 | lai->primitive_type_vector [cplus_primitive_type_decdouble] |
| 1202 | = builtin->builtin_decdouble; |
| 1203 | lai->primitive_type_vector [cplus_primitive_type_declong] |
| 1204 | = builtin->builtin_declong; |
| 1205 | |
| 1206 | lai->bool_type_symbol = "bool"; |
| 1207 | lai->bool_type_default = builtin->builtin_bool; |
| 1208 | } |
| 1209 | |
| 1210 | const struct language_defn cplus_language_defn = |
| 1211 | { |
| 1212 | "c++", /* Language name */ |
| 1213 | language_cplus, |
| 1214 | range_check_off, |
| 1215 | type_check_off, |
| 1216 | case_sensitive_on, |
| 1217 | array_row_major, |
| 1218 | macro_expansion_c, |
| 1219 | &exp_descriptor_c, |
| 1220 | c_parse, |
| 1221 | c_error, |
| 1222 | null_post_parser, |
| 1223 | c_printchar, /* Print a character constant */ |
| 1224 | c_printstr, /* Function to print string constant */ |
| 1225 | c_emit_char, /* Print a single char */ |
| 1226 | c_print_type, /* Print a type using appropriate syntax */ |
| 1227 | c_print_typedef, /* Print a typedef using appropriate syntax */ |
| 1228 | c_val_print, /* Print a value using appropriate syntax */ |
| 1229 | c_value_print, /* Print a top-level value */ |
| 1230 | cplus_skip_trampoline, /* Language specific skip_trampoline */ |
| 1231 | "this", /* name_of_this */ |
| 1232 | cp_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 1233 | cp_lookup_transparent_type, /* lookup_transparent_type */ |
| 1234 | cplus_demangle, /* Language specific symbol demangler */ |
| 1235 | cp_class_name_from_physname, /* Language specific class_name_from_physname */ |
| 1236 | c_op_print_tab, /* expression operators for printing */ |
| 1237 | 1, /* c-style arrays */ |
| 1238 | 0, /* String lower bound */ |
| 1239 | default_word_break_characters, |
| 1240 | default_make_symbol_completion_list, |
| 1241 | cplus_language_arch_info, |
| 1242 | default_print_array_index, |
| 1243 | cp_pass_by_reference, |
| 1244 | c_get_string, |
| 1245 | LANG_MAGIC |
| 1246 | }; |
| 1247 | |
| 1248 | const struct language_defn asm_language_defn = |
| 1249 | { |
| 1250 | "asm", /* Language name */ |
| 1251 | language_asm, |
| 1252 | range_check_off, |
| 1253 | type_check_off, |
| 1254 | case_sensitive_on, |
| 1255 | array_row_major, |
| 1256 | macro_expansion_c, |
| 1257 | &exp_descriptor_c, |
| 1258 | c_parse, |
| 1259 | c_error, |
| 1260 | null_post_parser, |
| 1261 | c_printchar, /* Print a character constant */ |
| 1262 | c_printstr, /* Function to print string constant */ |
| 1263 | c_emit_char, /* Print a single char */ |
| 1264 | c_print_type, /* Print a type using appropriate syntax */ |
| 1265 | c_print_typedef, /* Print a typedef using appropriate syntax */ |
| 1266 | c_val_print, /* Print a value using appropriate syntax */ |
| 1267 | c_value_print, /* Print a top-level value */ |
| 1268 | NULL, /* Language specific skip_trampoline */ |
| 1269 | NULL, /* name_of_this */ |
| 1270 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 1271 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
| 1272 | NULL, /* Language specific symbol demangler */ |
| 1273 | NULL, /* Language specific class_name_from_physname */ |
| 1274 | c_op_print_tab, /* expression operators for printing */ |
| 1275 | 1, /* c-style arrays */ |
| 1276 | 0, /* String lower bound */ |
| 1277 | default_word_break_characters, |
| 1278 | default_make_symbol_completion_list, |
| 1279 | c_language_arch_info, /* FIXME: la_language_arch_info. */ |
| 1280 | default_print_array_index, |
| 1281 | default_pass_by_reference, |
| 1282 | c_get_string, |
| 1283 | LANG_MAGIC |
| 1284 | }; |
| 1285 | |
| 1286 | /* The following language_defn does not represent a real language. |
| 1287 | It just provides a minimal support a-la-C that should allow users |
| 1288 | to do some simple operations when debugging applications that use |
| 1289 | a language currently not supported by GDB. */ |
| 1290 | |
| 1291 | const struct language_defn minimal_language_defn = |
| 1292 | { |
| 1293 | "minimal", /* Language name */ |
| 1294 | language_minimal, |
| 1295 | range_check_off, |
| 1296 | type_check_off, |
| 1297 | case_sensitive_on, |
| 1298 | array_row_major, |
| 1299 | macro_expansion_c, |
| 1300 | &exp_descriptor_c, |
| 1301 | c_parse, |
| 1302 | c_error, |
| 1303 | null_post_parser, |
| 1304 | c_printchar, /* Print a character constant */ |
| 1305 | c_printstr, /* Function to print string constant */ |
| 1306 | c_emit_char, /* Print a single char */ |
| 1307 | c_print_type, /* Print a type using appropriate syntax */ |
| 1308 | c_print_typedef, /* Print a typedef using appropriate syntax */ |
| 1309 | c_val_print, /* Print a value using appropriate syntax */ |
| 1310 | c_value_print, /* Print a top-level value */ |
| 1311 | NULL, /* Language specific skip_trampoline */ |
| 1312 | NULL, /* name_of_this */ |
| 1313 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 1314 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
| 1315 | NULL, /* Language specific symbol demangler */ |
| 1316 | NULL, /* Language specific class_name_from_physname */ |
| 1317 | c_op_print_tab, /* expression operators for printing */ |
| 1318 | 1, /* c-style arrays */ |
| 1319 | 0, /* String lower bound */ |
| 1320 | default_word_break_characters, |
| 1321 | default_make_symbol_completion_list, |
| 1322 | c_language_arch_info, |
| 1323 | default_print_array_index, |
| 1324 | default_pass_by_reference, |
| 1325 | c_get_string, |
| 1326 | LANG_MAGIC |
| 1327 | }; |
| 1328 | |
| 1329 | void |
| 1330 | _initialize_c_language (void) |
| 1331 | { |
| 1332 | add_language (&c_language_defn); |
| 1333 | add_language (&cplus_language_defn); |
| 1334 | add_language (&asm_language_defn); |
| 1335 | add_language (&minimal_language_defn); |
| 1336 | } |