| 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, 2010, 2011 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 | #include "exceptions.h" |
| 39 | |
| 40 | extern void _initialize_c_language (void); |
| 41 | |
| 42 | /* Given a C string type, STR_TYPE, return the corresponding target |
| 43 | character set name. */ |
| 44 | |
| 45 | static const char * |
| 46 | charset_for_string_type (enum c_string_type str_type, |
| 47 | struct gdbarch *gdbarch) |
| 48 | { |
| 49 | switch (str_type & ~C_CHAR) |
| 50 | { |
| 51 | case C_STRING: |
| 52 | return target_charset (gdbarch); |
| 53 | case C_WIDE_STRING: |
| 54 | return target_wide_charset (gdbarch); |
| 55 | case C_STRING_16: |
| 56 | /* FIXME: UTF-16 is not always correct. */ |
| 57 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
| 58 | return "UTF-16BE"; |
| 59 | else |
| 60 | return "UTF-16LE"; |
| 61 | case C_STRING_32: |
| 62 | /* FIXME: UTF-32 is not always correct. */ |
| 63 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
| 64 | return "UTF-32BE"; |
| 65 | else |
| 66 | return "UTF-32LE"; |
| 67 | } |
| 68 | internal_error (__FILE__, __LINE__, _("unhandled c_string_type")); |
| 69 | } |
| 70 | |
| 71 | /* Classify ELTTYPE according to what kind of character it is. Return |
| 72 | the enum constant representing the character type. Also set |
| 73 | *ENCODING to the name of the character set to use when converting |
| 74 | characters of this type in target BYTE_ORDER to the host character |
| 75 | set. */ |
| 76 | |
| 77 | static enum c_string_type |
| 78 | classify_type (struct type *elttype, struct gdbarch *gdbarch, |
| 79 | const char **encoding) |
| 80 | { |
| 81 | enum c_string_type result; |
| 82 | |
| 83 | /* We loop because ELTTYPE may be a typedef, and we want to |
| 84 | successively peel each typedef until we reach a type we |
| 85 | understand. We don't use CHECK_TYPEDEF because that will strip |
| 86 | all typedefs at once -- but in C, wchar_t is itself a typedef, so |
| 87 | that would do the wrong thing. */ |
| 88 | while (elttype) |
| 89 | { |
| 90 | char *name = TYPE_NAME (elttype); |
| 91 | |
| 92 | if (TYPE_CODE (elttype) == TYPE_CODE_CHAR || !name) |
| 93 | { |
| 94 | result = C_CHAR; |
| 95 | goto done; |
| 96 | } |
| 97 | |
| 98 | if (!strcmp (name, "wchar_t")) |
| 99 | { |
| 100 | result = C_WIDE_CHAR; |
| 101 | goto done; |
| 102 | } |
| 103 | |
| 104 | if (!strcmp (name, "char16_t")) |
| 105 | { |
| 106 | result = C_CHAR_16; |
| 107 | goto done; |
| 108 | } |
| 109 | |
| 110 | if (!strcmp (name, "char32_t")) |
| 111 | { |
| 112 | result = C_CHAR_32; |
| 113 | goto done; |
| 114 | } |
| 115 | |
| 116 | if (TYPE_CODE (elttype) != TYPE_CODE_TYPEDEF) |
| 117 | break; |
| 118 | |
| 119 | /* Call for side effects. */ |
| 120 | check_typedef (elttype); |
| 121 | |
| 122 | if (TYPE_TARGET_TYPE (elttype)) |
| 123 | elttype = TYPE_TARGET_TYPE (elttype); |
| 124 | else |
| 125 | { |
| 126 | /* Perhaps check_typedef did not update the target type. In |
| 127 | this case, force the lookup again and hope it works out. |
| 128 | It never will for C, but it might for C++. */ |
| 129 | CHECK_TYPEDEF (elttype); |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | /* Punt. */ |
| 134 | result = C_CHAR; |
| 135 | |
| 136 | done: |
| 137 | if (encoding) |
| 138 | *encoding = charset_for_string_type (result, gdbarch); |
| 139 | |
| 140 | return result; |
| 141 | } |
| 142 | |
| 143 | /* Return true if print_wchar can display W without resorting to a |
| 144 | numeric escape, false otherwise. */ |
| 145 | |
| 146 | static int |
| 147 | wchar_printable (gdb_wchar_t w) |
| 148 | { |
| 149 | return (gdb_iswprint (w) |
| 150 | || w == LCST ('\a') || w == LCST ('\b') |
| 151 | || w == LCST ('\f') || w == LCST ('\n') |
| 152 | || w == LCST ('\r') || w == LCST ('\t') |
| 153 | || w == LCST ('\v')); |
| 154 | } |
| 155 | |
| 156 | /* A helper function that converts the contents of STRING to wide |
| 157 | characters and then appends them to OUTPUT. */ |
| 158 | |
| 159 | static void |
| 160 | append_string_as_wide (const char *string, |
| 161 | struct obstack *output) |
| 162 | { |
| 163 | for (; *string; ++string) |
| 164 | { |
| 165 | gdb_wchar_t w = gdb_btowc (*string); |
| 166 | obstack_grow (output, &w, sizeof (gdb_wchar_t)); |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | /* Print a wide character W to OUTPUT. ORIG is a pointer to the |
| 171 | original (target) bytes representing the character, ORIG_LEN is the |
| 172 | number of valid bytes. WIDTH is the number of bytes in a base |
| 173 | characters of the type. OUTPUT is an obstack to which wide |
| 174 | characters are emitted. QUOTER is a (narrow) character indicating |
| 175 | the style of quotes surrounding the character to be printed. |
| 176 | NEED_ESCAPE is an in/out flag which is used to track numeric |
| 177 | escapes across calls. */ |
| 178 | |
| 179 | static void |
| 180 | print_wchar (gdb_wint_t w, const gdb_byte *orig, |
| 181 | int orig_len, int width, |
| 182 | enum bfd_endian byte_order, |
| 183 | struct obstack *output, |
| 184 | int quoter, int *need_escapep) |
| 185 | { |
| 186 | int need_escape = *need_escapep; |
| 187 | |
| 188 | *need_escapep = 0; |
| 189 | if (gdb_iswprint (w) && (!need_escape || (!gdb_iswdigit (w) |
| 190 | && w != LCST ('8') |
| 191 | && w != LCST ('9')))) |
| 192 | { |
| 193 | gdb_wchar_t wchar = w; |
| 194 | |
| 195 | if (w == gdb_btowc (quoter) || w == LCST ('\\')) |
| 196 | obstack_grow_wstr (output, LCST ("\\")); |
| 197 | obstack_grow (output, &wchar, sizeof (gdb_wchar_t)); |
| 198 | } |
| 199 | else |
| 200 | { |
| 201 | switch (w) |
| 202 | { |
| 203 | case LCST ('\a'): |
| 204 | obstack_grow_wstr (output, LCST ("\\a")); |
| 205 | break; |
| 206 | case LCST ('\b'): |
| 207 | obstack_grow_wstr (output, LCST ("\\b")); |
| 208 | break; |
| 209 | case LCST ('\f'): |
| 210 | obstack_grow_wstr (output, LCST ("\\f")); |
| 211 | break; |
| 212 | case LCST ('\n'): |
| 213 | obstack_grow_wstr (output, LCST ("\\n")); |
| 214 | break; |
| 215 | case LCST ('\r'): |
| 216 | obstack_grow_wstr (output, LCST ("\\r")); |
| 217 | break; |
| 218 | case LCST ('\t'): |
| 219 | obstack_grow_wstr (output, LCST ("\\t")); |
| 220 | break; |
| 221 | case LCST ('\v'): |
| 222 | obstack_grow_wstr (output, LCST ("\\v")); |
| 223 | break; |
| 224 | default: |
| 225 | { |
| 226 | int i; |
| 227 | |
| 228 | for (i = 0; i + width <= orig_len; i += width) |
| 229 | { |
| 230 | char octal[30]; |
| 231 | ULONGEST value; |
| 232 | |
| 233 | value = extract_unsigned_integer (&orig[i], width, |
| 234 | byte_order); |
| 235 | /* If the value fits in 3 octal digits, print it that |
| 236 | way. Otherwise, print it as a hex escape. */ |
| 237 | if (value <= 0777) |
| 238 | sprintf (octal, "\\%.3o", (int) (value & 0777)); |
| 239 | else |
| 240 | sprintf (octal, "\\x%lx", (long) value); |
| 241 | append_string_as_wide (octal, output); |
| 242 | } |
| 243 | /* If we somehow have extra bytes, print them now. */ |
| 244 | while (i < orig_len) |
| 245 | { |
| 246 | char octal[5]; |
| 247 | |
| 248 | sprintf (octal, "\\%.3o", orig[i] & 0xff); |
| 249 | append_string_as_wide (octal, output); |
| 250 | ++i; |
| 251 | } |
| 252 | |
| 253 | *need_escapep = 1; |
| 254 | } |
| 255 | break; |
| 256 | } |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | /* Print the character C on STREAM as part of the contents of a |
| 261 | literal string whose delimiter is QUOTER. Note that that format |
| 262 | for printing characters and strings is language specific. */ |
| 263 | |
| 264 | void |
| 265 | c_emit_char (int c, struct type *type, |
| 266 | struct ui_file *stream, int quoter) |
| 267 | { |
| 268 | enum bfd_endian byte_order |
| 269 | = gdbarch_byte_order (get_type_arch (type)); |
| 270 | struct obstack wchar_buf, output; |
| 271 | struct cleanup *cleanups; |
| 272 | const char *encoding; |
| 273 | gdb_byte *buf; |
| 274 | struct wchar_iterator *iter; |
| 275 | int need_escape = 0; |
| 276 | |
| 277 | classify_type (type, get_type_arch (type), &encoding); |
| 278 | |
| 279 | buf = alloca (TYPE_LENGTH (type)); |
| 280 | pack_long (buf, type, c); |
| 281 | |
| 282 | iter = make_wchar_iterator (buf, TYPE_LENGTH (type), |
| 283 | encoding, TYPE_LENGTH (type)); |
| 284 | cleanups = make_cleanup_wchar_iterator (iter); |
| 285 | |
| 286 | /* This holds the printable form of the wchar_t data. */ |
| 287 | obstack_init (&wchar_buf); |
| 288 | make_cleanup_obstack_free (&wchar_buf); |
| 289 | |
| 290 | while (1) |
| 291 | { |
| 292 | int num_chars; |
| 293 | gdb_wchar_t *chars; |
| 294 | const gdb_byte *buf; |
| 295 | size_t buflen; |
| 296 | int print_escape = 1; |
| 297 | enum wchar_iterate_result result; |
| 298 | |
| 299 | num_chars = wchar_iterate (iter, &result, &chars, &buf, &buflen); |
| 300 | if (num_chars < 0) |
| 301 | break; |
| 302 | if (num_chars > 0) |
| 303 | { |
| 304 | /* If all characters are printable, print them. Otherwise, |
| 305 | we're going to have to print an escape sequence. We |
| 306 | check all characters because we want to print the target |
| 307 | bytes in the escape sequence, and we don't know character |
| 308 | boundaries there. */ |
| 309 | int i; |
| 310 | |
| 311 | print_escape = 0; |
| 312 | for (i = 0; i < num_chars; ++i) |
| 313 | if (!wchar_printable (chars[i])) |
| 314 | { |
| 315 | print_escape = 1; |
| 316 | break; |
| 317 | } |
| 318 | |
| 319 | if (!print_escape) |
| 320 | { |
| 321 | for (i = 0; i < num_chars; ++i) |
| 322 | print_wchar (chars[i], buf, buflen, |
| 323 | TYPE_LENGTH (type), byte_order, |
| 324 | &wchar_buf, quoter, &need_escape); |
| 325 | } |
| 326 | } |
| 327 | |
| 328 | /* This handles the NUM_CHARS == 0 case as well. */ |
| 329 | if (print_escape) |
| 330 | print_wchar (gdb_WEOF, buf, buflen, TYPE_LENGTH (type), |
| 331 | byte_order, &wchar_buf, quoter, &need_escape); |
| 332 | } |
| 333 | |
| 334 | /* The output in the host encoding. */ |
| 335 | obstack_init (&output); |
| 336 | make_cleanup_obstack_free (&output); |
| 337 | |
| 338 | convert_between_encodings (INTERMEDIATE_ENCODING, host_charset (), |
| 339 | obstack_base (&wchar_buf), |
| 340 | obstack_object_size (&wchar_buf), |
| 341 | 1, &output, translit_char); |
| 342 | obstack_1grow (&output, '\0'); |
| 343 | |
| 344 | fputs_filtered (obstack_base (&output), stream); |
| 345 | |
| 346 | do_cleanups (cleanups); |
| 347 | } |
| 348 | |
| 349 | void |
| 350 | c_printchar (int c, struct type *type, struct ui_file *stream) |
| 351 | { |
| 352 | enum c_string_type str_type; |
| 353 | |
| 354 | str_type = classify_type (type, get_type_arch (type), NULL); |
| 355 | switch (str_type) |
| 356 | { |
| 357 | case C_CHAR: |
| 358 | break; |
| 359 | case C_WIDE_CHAR: |
| 360 | fputc_filtered ('L', stream); |
| 361 | break; |
| 362 | case C_CHAR_16: |
| 363 | fputc_filtered ('u', stream); |
| 364 | break; |
| 365 | case C_CHAR_32: |
| 366 | fputc_filtered ('U', stream); |
| 367 | break; |
| 368 | } |
| 369 | |
| 370 | fputc_filtered ('\'', stream); |
| 371 | LA_EMIT_CHAR (c, type, stream, '\''); |
| 372 | fputc_filtered ('\'', stream); |
| 373 | } |
| 374 | |
| 375 | /* Print the character string STRING, printing at most LENGTH |
| 376 | characters. LENGTH is -1 if the string is nul terminated. Each |
| 377 | character is WIDTH bytes long. Printing stops early if the number |
| 378 | hits print_max; repeat counts are printed as appropriate. Print |
| 379 | ellipses at the end if we had to stop before printing LENGTH |
| 380 | characters, or if FORCE_ELLIPSES. */ |
| 381 | |
| 382 | void |
| 383 | c_printstr (struct ui_file *stream, struct type *type, |
| 384 | const gdb_byte *string, unsigned int length, |
| 385 | const char *user_encoding, int force_ellipses, |
| 386 | const struct value_print_options *options) |
| 387 | { |
| 388 | enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type)); |
| 389 | unsigned int i; |
| 390 | unsigned int things_printed = 0; |
| 391 | int in_quotes = 0; |
| 392 | int need_comma = 0; |
| 393 | int width = TYPE_LENGTH (type); |
| 394 | struct obstack wchar_buf, output; |
| 395 | struct cleanup *cleanup; |
| 396 | enum c_string_type str_type; |
| 397 | const char *type_encoding; |
| 398 | const char *encoding; |
| 399 | struct wchar_iterator *iter; |
| 400 | int finished = 0; |
| 401 | int need_escape = 0; |
| 402 | |
| 403 | if (length == -1) |
| 404 | { |
| 405 | unsigned long current_char = 1; |
| 406 | |
| 407 | for (i = 0; current_char; ++i) |
| 408 | { |
| 409 | QUIT; |
| 410 | current_char = extract_unsigned_integer (string + i * width, |
| 411 | width, byte_order); |
| 412 | } |
| 413 | length = i; |
| 414 | } |
| 415 | |
| 416 | /* If the string was not truncated due to `set print elements', and |
| 417 | the last byte of it is a null, we don't print that, in |
| 418 | traditional C style. */ |
| 419 | if (!force_ellipses |
| 420 | && length > 0 |
| 421 | && (extract_unsigned_integer (string + (length - 1) * width, |
| 422 | width, byte_order) == 0)) |
| 423 | length--; |
| 424 | |
| 425 | str_type = (classify_type (type, get_type_arch (type), &type_encoding) |
| 426 | & ~C_CHAR); |
| 427 | switch (str_type) |
| 428 | { |
| 429 | case C_STRING: |
| 430 | break; |
| 431 | case C_WIDE_STRING: |
| 432 | fputs_filtered ("L", stream); |
| 433 | break; |
| 434 | case C_STRING_16: |
| 435 | fputs_filtered ("u", stream); |
| 436 | break; |
| 437 | case C_STRING_32: |
| 438 | fputs_filtered ("U", stream); |
| 439 | break; |
| 440 | } |
| 441 | |
| 442 | encoding = (user_encoding && *user_encoding) |
| 443 | ? user_encoding : type_encoding; |
| 444 | |
| 445 | if (length == 0) |
| 446 | { |
| 447 | fputs_filtered ("\"\"", stream); |
| 448 | return; |
| 449 | } |
| 450 | |
| 451 | /* Arrange to iterate over the characters, in wchar_t form. */ |
| 452 | iter = make_wchar_iterator (string, length * width, encoding, width); |
| 453 | cleanup = make_cleanup_wchar_iterator (iter); |
| 454 | |
| 455 | /* WCHAR_BUF is the obstack we use to represent the string in |
| 456 | wchar_t form. */ |
| 457 | obstack_init (&wchar_buf); |
| 458 | make_cleanup_obstack_free (&wchar_buf); |
| 459 | |
| 460 | while (!finished && things_printed < options->print_max) |
| 461 | { |
| 462 | int num_chars; |
| 463 | enum wchar_iterate_result result; |
| 464 | gdb_wchar_t *chars; |
| 465 | const gdb_byte *buf; |
| 466 | size_t buflen; |
| 467 | |
| 468 | QUIT; |
| 469 | |
| 470 | if (need_comma) |
| 471 | { |
| 472 | obstack_grow_wstr (&wchar_buf, LCST (", ")); |
| 473 | need_comma = 0; |
| 474 | } |
| 475 | |
| 476 | num_chars = wchar_iterate (iter, &result, &chars, &buf, &buflen); |
| 477 | /* We only look at repetitions when we were able to convert a |
| 478 | single character in isolation. This makes the code simpler |
| 479 | and probably does the sensible thing in the majority of |
| 480 | cases. */ |
| 481 | while (num_chars == 1 && things_printed < options->print_max) |
| 482 | { |
| 483 | /* Count the number of repetitions. */ |
| 484 | unsigned int reps = 0; |
| 485 | gdb_wchar_t current_char = chars[0]; |
| 486 | const gdb_byte *orig_buf = buf; |
| 487 | int orig_len = buflen; |
| 488 | |
| 489 | if (need_comma) |
| 490 | { |
| 491 | obstack_grow_wstr (&wchar_buf, LCST (", ")); |
| 492 | need_comma = 0; |
| 493 | } |
| 494 | |
| 495 | while (num_chars == 1 && current_char == chars[0]) |
| 496 | { |
| 497 | num_chars = wchar_iterate (iter, &result, &chars, |
| 498 | &buf, &buflen); |
| 499 | ++reps; |
| 500 | } |
| 501 | |
| 502 | /* Emit CURRENT_CHAR according to the repetition count and |
| 503 | options. */ |
| 504 | if (reps > options->repeat_count_threshold) |
| 505 | { |
| 506 | if (in_quotes) |
| 507 | { |
| 508 | if (options->inspect_it) |
| 509 | obstack_grow_wstr (&wchar_buf, LCST ("\\\", ")); |
| 510 | else |
| 511 | obstack_grow_wstr (&wchar_buf, LCST ("\", ")); |
| 512 | in_quotes = 0; |
| 513 | } |
| 514 | obstack_grow_wstr (&wchar_buf, LCST ("'")); |
| 515 | need_escape = 0; |
| 516 | print_wchar (current_char, orig_buf, orig_len, width, |
| 517 | byte_order, &wchar_buf, '\'', &need_escape); |
| 518 | obstack_grow_wstr (&wchar_buf, LCST ("'")); |
| 519 | { |
| 520 | /* Painful gyrations. */ |
| 521 | int j; |
| 522 | char *s = xstrprintf (_(" <repeats %u times>"), reps); |
| 523 | |
| 524 | for (j = 0; s[j]; ++j) |
| 525 | { |
| 526 | gdb_wchar_t w = gdb_btowc (s[j]); |
| 527 | obstack_grow (&wchar_buf, &w, sizeof (gdb_wchar_t)); |
| 528 | } |
| 529 | xfree (s); |
| 530 | } |
| 531 | things_printed += options->repeat_count_threshold; |
| 532 | need_comma = 1; |
| 533 | } |
| 534 | else |
| 535 | { |
| 536 | /* Saw the character one or more times, but fewer than |
| 537 | the repetition threshold. */ |
| 538 | if (!in_quotes) |
| 539 | { |
| 540 | if (options->inspect_it) |
| 541 | obstack_grow_wstr (&wchar_buf, LCST ("\\\"")); |
| 542 | else |
| 543 | obstack_grow_wstr (&wchar_buf, LCST ("\"")); |
| 544 | in_quotes = 1; |
| 545 | need_escape = 0; |
| 546 | } |
| 547 | |
| 548 | while (reps-- > 0) |
| 549 | { |
| 550 | print_wchar (current_char, orig_buf, |
| 551 | orig_len, width, |
| 552 | byte_order, &wchar_buf, |
| 553 | '"', &need_escape); |
| 554 | ++things_printed; |
| 555 | } |
| 556 | } |
| 557 | } |
| 558 | |
| 559 | /* NUM_CHARS and the other outputs from wchar_iterate are valid |
| 560 | here regardless of which branch was taken above. */ |
| 561 | if (num_chars < 0) |
| 562 | { |
| 563 | /* Hit EOF. */ |
| 564 | finished = 1; |
| 565 | break; |
| 566 | } |
| 567 | |
| 568 | switch (result) |
| 569 | { |
| 570 | case wchar_iterate_invalid: |
| 571 | if (!in_quotes) |
| 572 | { |
| 573 | if (options->inspect_it) |
| 574 | obstack_grow_wstr (&wchar_buf, LCST ("\\\"")); |
| 575 | else |
| 576 | obstack_grow_wstr (&wchar_buf, LCST ("\"")); |
| 577 | in_quotes = 1; |
| 578 | } |
| 579 | need_escape = 0; |
| 580 | print_wchar (gdb_WEOF, buf, buflen, width, byte_order, |
| 581 | &wchar_buf, '"', &need_escape); |
| 582 | break; |
| 583 | |
| 584 | case wchar_iterate_incomplete: |
| 585 | if (in_quotes) |
| 586 | { |
| 587 | if (options->inspect_it) |
| 588 | obstack_grow_wstr (&wchar_buf, LCST ("\\\",")); |
| 589 | else |
| 590 | obstack_grow_wstr (&wchar_buf, LCST ("\",")); |
| 591 | in_quotes = 0; |
| 592 | } |
| 593 | obstack_grow_wstr (&wchar_buf, |
| 594 | LCST (" <incomplete sequence ")); |
| 595 | print_wchar (gdb_WEOF, buf, buflen, width, |
| 596 | byte_order, &wchar_buf, |
| 597 | 0, &need_escape); |
| 598 | obstack_grow_wstr (&wchar_buf, LCST (">")); |
| 599 | finished = 1; |
| 600 | break; |
| 601 | } |
| 602 | } |
| 603 | |
| 604 | /* Terminate the quotes if necessary. */ |
| 605 | if (in_quotes) |
| 606 | { |
| 607 | if (options->inspect_it) |
| 608 | obstack_grow_wstr (&wchar_buf, LCST ("\\\"")); |
| 609 | else |
| 610 | obstack_grow_wstr (&wchar_buf, LCST ("\"")); |
| 611 | } |
| 612 | |
| 613 | if (force_ellipses || !finished) |
| 614 | obstack_grow_wstr (&wchar_buf, LCST ("...")); |
| 615 | |
| 616 | /* OUTPUT is where we collect `char's for printing. */ |
| 617 | obstack_init (&output); |
| 618 | make_cleanup_obstack_free (&output); |
| 619 | |
| 620 | convert_between_encodings (INTERMEDIATE_ENCODING, host_charset (), |
| 621 | obstack_base (&wchar_buf), |
| 622 | obstack_object_size (&wchar_buf), |
| 623 | 1, &output, translit_char); |
| 624 | obstack_1grow (&output, '\0'); |
| 625 | |
| 626 | fputs_filtered (obstack_base (&output), stream); |
| 627 | |
| 628 | do_cleanups (cleanup); |
| 629 | } |
| 630 | |
| 631 | /* Obtain a C string from the inferior storing it in a newly allocated |
| 632 | buffer in BUFFER, which should be freed by the caller. If the in- |
| 633 | and out-parameter *LENGTH is specified at -1, the string is read |
| 634 | until a null character of the appropriate width is found, otherwise |
| 635 | the string is read to the length of characters specified. The size |
| 636 | of a character is determined by the length of the target type of |
| 637 | the pointer or array. If VALUE is an array with a known length, |
| 638 | the function will not read past the end of the array. On |
| 639 | completion, *LENGTH will be set to the size of the string read in |
| 640 | characters. (If a length of -1 is specified, the length returned |
| 641 | will not include the null character). CHARSET is always set to the |
| 642 | target charset. */ |
| 643 | |
| 644 | void |
| 645 | c_get_string (struct value *value, gdb_byte **buffer, |
| 646 | int *length, struct type **char_type, |
| 647 | const char **charset) |
| 648 | { |
| 649 | int err, width; |
| 650 | unsigned int fetchlimit; |
| 651 | struct type *type = check_typedef (value_type (value)); |
| 652 | struct type *element_type = TYPE_TARGET_TYPE (type); |
| 653 | int req_length = *length; |
| 654 | enum bfd_endian byte_order |
| 655 | = gdbarch_byte_order (get_type_arch (type)); |
| 656 | enum c_string_type kind; |
| 657 | |
| 658 | if (element_type == NULL) |
| 659 | goto error; |
| 660 | |
| 661 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) |
| 662 | { |
| 663 | /* If we know the size of the array, we can use it as a limit on |
| 664 | the number of characters to be fetched. */ |
| 665 | if (TYPE_NFIELDS (type) == 1 |
| 666 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_RANGE) |
| 667 | { |
| 668 | LONGEST low_bound, high_bound; |
| 669 | |
| 670 | get_discrete_bounds (TYPE_FIELD_TYPE (type, 0), |
| 671 | &low_bound, &high_bound); |
| 672 | fetchlimit = high_bound - low_bound + 1; |
| 673 | } |
| 674 | else |
| 675 | fetchlimit = UINT_MAX; |
| 676 | } |
| 677 | else if (TYPE_CODE (type) == TYPE_CODE_PTR) |
| 678 | fetchlimit = UINT_MAX; |
| 679 | else |
| 680 | /* We work only with arrays and pointers. */ |
| 681 | goto error; |
| 682 | |
| 683 | if (! c_textual_element_type (element_type, 0)) |
| 684 | goto error; |
| 685 | kind = classify_type (element_type, |
| 686 | get_type_arch (element_type), |
| 687 | charset); |
| 688 | width = TYPE_LENGTH (element_type); |
| 689 | |
| 690 | /* If the string lives in GDB's memory instead of the inferior's, |
| 691 | then we just need to copy it to BUFFER. Also, since such strings |
| 692 | are arrays with known size, FETCHLIMIT will hold the size of the |
| 693 | array. */ |
| 694 | if ((VALUE_LVAL (value) == not_lval |
| 695 | || VALUE_LVAL (value) == lval_internalvar) |
| 696 | && fetchlimit != UINT_MAX) |
| 697 | { |
| 698 | int i; |
| 699 | const gdb_byte *contents = value_contents (value); |
| 700 | |
| 701 | /* If a length is specified, use that. */ |
| 702 | if (*length >= 0) |
| 703 | i = *length; |
| 704 | else |
| 705 | /* Otherwise, look for a null character. */ |
| 706 | for (i = 0; i < fetchlimit; i++) |
| 707 | if (extract_unsigned_integer (contents + i * width, |
| 708 | width, byte_order) == 0) |
| 709 | break; |
| 710 | |
| 711 | /* I is now either a user-defined length, the number of non-null |
| 712 | characters, or FETCHLIMIT. */ |
| 713 | *length = i * width; |
| 714 | *buffer = xmalloc (*length); |
| 715 | memcpy (*buffer, contents, *length); |
| 716 | err = 0; |
| 717 | } |
| 718 | else |
| 719 | { |
| 720 | CORE_ADDR addr = value_as_address (value); |
| 721 | |
| 722 | err = read_string (addr, *length, width, fetchlimit, |
| 723 | byte_order, buffer, length); |
| 724 | if (err) |
| 725 | { |
| 726 | xfree (*buffer); |
| 727 | if (err == EIO) |
| 728 | throw_error (MEMORY_ERROR, "Address %s out of bounds", |
| 729 | paddress (get_type_arch (type), addr)); |
| 730 | else |
| 731 | error (_("Error reading string from inferior: %s"), |
| 732 | safe_strerror (err)); |
| 733 | } |
| 734 | } |
| 735 | |
| 736 | /* If the LENGTH is specified at -1, we want to return the string |
| 737 | length up to the terminating null character. If an actual length |
| 738 | was specified, we want to return the length of exactly what was |
| 739 | read. */ |
| 740 | if (req_length == -1) |
| 741 | /* If the last character is null, subtract it from LENGTH. */ |
| 742 | if (*length > 0 |
| 743 | && extract_unsigned_integer (*buffer + *length - width, |
| 744 | width, byte_order) == 0) |
| 745 | *length -= width; |
| 746 | |
| 747 | /* The read_string function will return the number of bytes read. |
| 748 | If length returned from read_string was > 0, return the number of |
| 749 | characters read by dividing the number of bytes by width. */ |
| 750 | if (*length != 0) |
| 751 | *length = *length / width; |
| 752 | |
| 753 | *char_type = element_type; |
| 754 | |
| 755 | return; |
| 756 | |
| 757 | error: |
| 758 | { |
| 759 | char *type_str; |
| 760 | |
| 761 | type_str = type_to_string (type); |
| 762 | if (type_str) |
| 763 | { |
| 764 | make_cleanup (xfree, type_str); |
| 765 | error (_("Trying to read string with inappropriate type `%s'."), |
| 766 | type_str); |
| 767 | } |
| 768 | else |
| 769 | error (_("Trying to read string with inappropriate type.")); |
| 770 | } |
| 771 | } |
| 772 | |
| 773 | \f |
| 774 | /* Evaluating C and C++ expressions. */ |
| 775 | |
| 776 | /* Convert a UCN. The digits of the UCN start at P and extend no |
| 777 | farther than LIMIT. DEST_CHARSET is the name of the character set |
| 778 | into which the UCN should be converted. The results are written to |
| 779 | OUTPUT. LENGTH is the maximum length of the UCN, either 4 or 8. |
| 780 | Returns a pointer to just after the final digit of the UCN. */ |
| 781 | |
| 782 | static char * |
| 783 | convert_ucn (char *p, char *limit, const char *dest_charset, |
| 784 | struct obstack *output, int length) |
| 785 | { |
| 786 | unsigned long result = 0; |
| 787 | gdb_byte data[4]; |
| 788 | int i; |
| 789 | |
| 790 | for (i = 0; i < length && p < limit && isxdigit (*p); ++i, ++p) |
| 791 | result = (result << 4) + host_hex_value (*p); |
| 792 | |
| 793 | for (i = 3; i >= 0; --i) |
| 794 | { |
| 795 | data[i] = result & 0xff; |
| 796 | result >>= 8; |
| 797 | } |
| 798 | |
| 799 | convert_between_encodings ("UTF-32BE", dest_charset, data, |
| 800 | 4, 4, output, translit_none); |
| 801 | |
| 802 | return p; |
| 803 | } |
| 804 | |
| 805 | /* Emit a character, VALUE, which was specified numerically, to |
| 806 | OUTPUT. TYPE is the target character type. */ |
| 807 | |
| 808 | static void |
| 809 | emit_numeric_character (struct type *type, unsigned long value, |
| 810 | struct obstack *output) |
| 811 | { |
| 812 | gdb_byte *buffer; |
| 813 | |
| 814 | buffer = alloca (TYPE_LENGTH (type)); |
| 815 | pack_long (buffer, type, value); |
| 816 | obstack_grow (output, buffer, TYPE_LENGTH (type)); |
| 817 | } |
| 818 | |
| 819 | /* Convert an octal escape sequence. TYPE is the target character |
| 820 | type. The digits of the escape sequence begin at P and extend no |
| 821 | farther than LIMIT. The result is written to OUTPUT. Returns a |
| 822 | pointer to just after the final digit of the escape sequence. */ |
| 823 | |
| 824 | static char * |
| 825 | convert_octal (struct type *type, char *p, |
| 826 | char *limit, struct obstack *output) |
| 827 | { |
| 828 | int i; |
| 829 | unsigned long value = 0; |
| 830 | |
| 831 | for (i = 0; |
| 832 | i < 3 && p < limit && isdigit (*p) && *p != '8' && *p != '9'; |
| 833 | ++i) |
| 834 | { |
| 835 | value = 8 * value + host_hex_value (*p); |
| 836 | ++p; |
| 837 | } |
| 838 | |
| 839 | emit_numeric_character (type, value, output); |
| 840 | |
| 841 | return p; |
| 842 | } |
| 843 | |
| 844 | /* Convert a hex escape sequence. TYPE is the target character type. |
| 845 | The digits of the escape sequence begin at P and extend no farther |
| 846 | than LIMIT. The result is written to OUTPUT. Returns a pointer to |
| 847 | just after the final digit of the escape sequence. */ |
| 848 | |
| 849 | static char * |
| 850 | convert_hex (struct type *type, char *p, |
| 851 | char *limit, struct obstack *output) |
| 852 | { |
| 853 | unsigned long value = 0; |
| 854 | |
| 855 | while (p < limit && isxdigit (*p)) |
| 856 | { |
| 857 | value = 16 * value + host_hex_value (*p); |
| 858 | ++p; |
| 859 | } |
| 860 | |
| 861 | emit_numeric_character (type, value, output); |
| 862 | |
| 863 | return p; |
| 864 | } |
| 865 | |
| 866 | #define ADVANCE \ |
| 867 | do { \ |
| 868 | ++p; \ |
| 869 | if (p == limit) \ |
| 870 | error (_("Malformed escape sequence")); \ |
| 871 | } while (0) |
| 872 | |
| 873 | /* Convert an escape sequence to a target format. TYPE is the target |
| 874 | character type to use, and DEST_CHARSET is the name of the target |
| 875 | character set. The backslash of the escape sequence is at *P, and |
| 876 | the escape sequence will not extend past LIMIT. The results are |
| 877 | written to OUTPUT. Returns a pointer to just past the final |
| 878 | character of the escape sequence. */ |
| 879 | |
| 880 | static char * |
| 881 | convert_escape (struct type *type, const char *dest_charset, |
| 882 | char *p, char *limit, struct obstack *output) |
| 883 | { |
| 884 | /* Skip the backslash. */ |
| 885 | ADVANCE; |
| 886 | |
| 887 | switch (*p) |
| 888 | { |
| 889 | case '\\': |
| 890 | obstack_1grow (output, '\\'); |
| 891 | ++p; |
| 892 | break; |
| 893 | |
| 894 | case 'x': |
| 895 | ADVANCE; |
| 896 | if (!isxdigit (*p)) |
| 897 | error (_("\\x used with no following hex digits.")); |
| 898 | p = convert_hex (type, p, limit, output); |
| 899 | break; |
| 900 | |
| 901 | case '0': |
| 902 | case '1': |
| 903 | case '2': |
| 904 | case '3': |
| 905 | case '4': |
| 906 | case '5': |
| 907 | case '6': |
| 908 | case '7': |
| 909 | p = convert_octal (type, p, limit, output); |
| 910 | break; |
| 911 | |
| 912 | case 'u': |
| 913 | case 'U': |
| 914 | { |
| 915 | int length = *p == 'u' ? 4 : 8; |
| 916 | |
| 917 | ADVANCE; |
| 918 | if (!isxdigit (*p)) |
| 919 | error (_("\\u used with no following hex digits")); |
| 920 | p = convert_ucn (p, limit, dest_charset, output, length); |
| 921 | } |
| 922 | } |
| 923 | |
| 924 | return p; |
| 925 | } |
| 926 | |
| 927 | /* Given a single string from a (C-specific) OP_STRING list, convert |
| 928 | it to a target string, handling escape sequences specially. The |
| 929 | output is written to OUTPUT. DATA is the input string, which has |
| 930 | length LEN. DEST_CHARSET is the name of the target character set, |
| 931 | and TYPE is the type of target character to use. */ |
| 932 | |
| 933 | static void |
| 934 | parse_one_string (struct obstack *output, char *data, int len, |
| 935 | const char *dest_charset, struct type *type) |
| 936 | { |
| 937 | char *limit; |
| 938 | |
| 939 | limit = data + len; |
| 940 | |
| 941 | while (data < limit) |
| 942 | { |
| 943 | char *p = data; |
| 944 | |
| 945 | /* Look for next escape, or the end of the input. */ |
| 946 | while (p < limit && *p != '\\') |
| 947 | ++p; |
| 948 | /* If we saw a run of characters, convert them all. */ |
| 949 | if (p > data) |
| 950 | convert_between_encodings (host_charset (), dest_charset, |
| 951 | data, p - data, 1, |
| 952 | output, translit_none); |
| 953 | /* If we saw an escape, convert it. */ |
| 954 | if (p < limit) |
| 955 | p = convert_escape (type, dest_charset, p, limit, output); |
| 956 | data = p; |
| 957 | } |
| 958 | } |
| 959 | |
| 960 | /* Expression evaluator for the C language family. Most operations |
| 961 | are delegated to evaluate_subexp_standard; see that function for a |
| 962 | description of the arguments. */ |
| 963 | |
| 964 | struct value * |
| 965 | evaluate_subexp_c (struct type *expect_type, struct expression *exp, |
| 966 | int *pos, enum noside noside) |
| 967 | { |
| 968 | enum exp_opcode op = exp->elts[*pos].opcode; |
| 969 | |
| 970 | switch (op) |
| 971 | { |
| 972 | case OP_STRING: |
| 973 | { |
| 974 | int oplen, limit; |
| 975 | struct type *type; |
| 976 | struct obstack output; |
| 977 | struct cleanup *cleanup; |
| 978 | struct value *result; |
| 979 | enum c_string_type dest_type; |
| 980 | const char *dest_charset; |
| 981 | |
| 982 | obstack_init (&output); |
| 983 | cleanup = make_cleanup_obstack_free (&output); |
| 984 | |
| 985 | ++*pos; |
| 986 | oplen = longest_to_int (exp->elts[*pos].longconst); |
| 987 | |
| 988 | ++*pos; |
| 989 | limit = *pos + BYTES_TO_EXP_ELEM (oplen + 1); |
| 990 | dest_type |
| 991 | = (enum c_string_type) longest_to_int (exp->elts[*pos].longconst); |
| 992 | switch (dest_type & ~C_CHAR) |
| 993 | { |
| 994 | case C_STRING: |
| 995 | type = language_string_char_type (exp->language_defn, |
| 996 | exp->gdbarch); |
| 997 | break; |
| 998 | case C_WIDE_STRING: |
| 999 | type = lookup_typename (exp->language_defn, exp->gdbarch, |
| 1000 | "wchar_t", NULL, 0); |
| 1001 | break; |
| 1002 | case C_STRING_16: |
| 1003 | type = lookup_typename (exp->language_defn, exp->gdbarch, |
| 1004 | "char16_t", NULL, 0); |
| 1005 | break; |
| 1006 | case C_STRING_32: |
| 1007 | type = lookup_typename (exp->language_defn, exp->gdbarch, |
| 1008 | "char32_t", NULL, 0); |
| 1009 | break; |
| 1010 | default: |
| 1011 | internal_error (__FILE__, __LINE__, _("unhandled c_string_type")); |
| 1012 | } |
| 1013 | |
| 1014 | /* Ensure TYPE_LENGTH is valid for TYPE. */ |
| 1015 | check_typedef (type); |
| 1016 | |
| 1017 | dest_charset = charset_for_string_type (dest_type, exp->gdbarch); |
| 1018 | |
| 1019 | ++*pos; |
| 1020 | while (*pos < limit) |
| 1021 | { |
| 1022 | int len; |
| 1023 | |
| 1024 | len = longest_to_int (exp->elts[*pos].longconst); |
| 1025 | |
| 1026 | ++*pos; |
| 1027 | if (noside != EVAL_SKIP) |
| 1028 | parse_one_string (&output, &exp->elts[*pos].string, len, |
| 1029 | dest_charset, type); |
| 1030 | *pos += BYTES_TO_EXP_ELEM (len); |
| 1031 | } |
| 1032 | |
| 1033 | /* Skip the trailing length and opcode. */ |
| 1034 | *pos += 2; |
| 1035 | |
| 1036 | if (noside == EVAL_SKIP) |
| 1037 | { |
| 1038 | /* Return a dummy value of the appropriate type. */ |
| 1039 | if ((dest_type & C_CHAR) != 0) |
| 1040 | result = allocate_value (type); |
| 1041 | else |
| 1042 | result = value_cstring ("", 0, type); |
| 1043 | do_cleanups (cleanup); |
| 1044 | return result; |
| 1045 | } |
| 1046 | |
| 1047 | if ((dest_type & C_CHAR) != 0) |
| 1048 | { |
| 1049 | LONGEST value; |
| 1050 | |
| 1051 | if (obstack_object_size (&output) != TYPE_LENGTH (type)) |
| 1052 | error (_("Could not convert character " |
| 1053 | "constant to target character set")); |
| 1054 | value = unpack_long (type, obstack_base (&output)); |
| 1055 | result = value_from_longest (type, value); |
| 1056 | } |
| 1057 | else |
| 1058 | { |
| 1059 | int i; |
| 1060 | |
| 1061 | /* Write the terminating character. */ |
| 1062 | for (i = 0; i < TYPE_LENGTH (type); ++i) |
| 1063 | obstack_1grow (&output, 0); |
| 1064 | result = value_cstring (obstack_base (&output), |
| 1065 | obstack_object_size (&output), |
| 1066 | type); |
| 1067 | } |
| 1068 | do_cleanups (cleanup); |
| 1069 | return result; |
| 1070 | } |
| 1071 | break; |
| 1072 | |
| 1073 | default: |
| 1074 | break; |
| 1075 | } |
| 1076 | return evaluate_subexp_standard (expect_type, exp, pos, noside); |
| 1077 | } |
| 1078 | |
| 1079 | |
| 1080 | \f |
| 1081 | /* Table mapping opcodes into strings for printing operators |
| 1082 | and precedences of the operators. */ |
| 1083 | |
| 1084 | const struct op_print c_op_print_tab[] = |
| 1085 | { |
| 1086 | {",", BINOP_COMMA, PREC_COMMA, 0}, |
| 1087 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, |
| 1088 | {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, |
| 1089 | {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, |
| 1090 | {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, |
| 1091 | {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, |
| 1092 | {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, |
| 1093 | {"==", BINOP_EQUAL, PREC_EQUAL, 0}, |
| 1094 | {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, |
| 1095 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, |
| 1096 | {">=", BINOP_GEQ, PREC_ORDER, 0}, |
| 1097 | {">", BINOP_GTR, PREC_ORDER, 0}, |
| 1098 | {"<", BINOP_LESS, PREC_ORDER, 0}, |
| 1099 | {">>", BINOP_RSH, PREC_SHIFT, 0}, |
| 1100 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, |
| 1101 | {"+", BINOP_ADD, PREC_ADD, 0}, |
| 1102 | {"-", BINOP_SUB, PREC_ADD, 0}, |
| 1103 | {"*", BINOP_MUL, PREC_MUL, 0}, |
| 1104 | {"/", BINOP_DIV, PREC_MUL, 0}, |
| 1105 | {"%", BINOP_REM, PREC_MUL, 0}, |
| 1106 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, |
| 1107 | {"-", UNOP_NEG, PREC_PREFIX, 0}, |
| 1108 | {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, |
| 1109 | {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, |
| 1110 | {"*", UNOP_IND, PREC_PREFIX, 0}, |
| 1111 | {"&", UNOP_ADDR, PREC_PREFIX, 0}, |
| 1112 | {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0}, |
| 1113 | {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, |
| 1114 | {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, |
| 1115 | {NULL, 0, 0, 0} |
| 1116 | }; |
| 1117 | \f |
| 1118 | enum c_primitive_types { |
| 1119 | c_primitive_type_int, |
| 1120 | c_primitive_type_long, |
| 1121 | c_primitive_type_short, |
| 1122 | c_primitive_type_char, |
| 1123 | c_primitive_type_float, |
| 1124 | c_primitive_type_double, |
| 1125 | c_primitive_type_void, |
| 1126 | c_primitive_type_long_long, |
| 1127 | c_primitive_type_signed_char, |
| 1128 | c_primitive_type_unsigned_char, |
| 1129 | c_primitive_type_unsigned_short, |
| 1130 | c_primitive_type_unsigned_int, |
| 1131 | c_primitive_type_unsigned_long, |
| 1132 | c_primitive_type_unsigned_long_long, |
| 1133 | c_primitive_type_long_double, |
| 1134 | c_primitive_type_complex, |
| 1135 | c_primitive_type_double_complex, |
| 1136 | c_primitive_type_decfloat, |
| 1137 | c_primitive_type_decdouble, |
| 1138 | c_primitive_type_declong, |
| 1139 | nr_c_primitive_types |
| 1140 | }; |
| 1141 | |
| 1142 | void |
| 1143 | c_language_arch_info (struct gdbarch *gdbarch, |
| 1144 | struct language_arch_info *lai) |
| 1145 | { |
| 1146 | const struct builtin_type *builtin = builtin_type (gdbarch); |
| 1147 | |
| 1148 | lai->string_char_type = builtin->builtin_char; |
| 1149 | lai->primitive_type_vector |
| 1150 | = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_c_primitive_types + 1, |
| 1151 | struct type *); |
| 1152 | lai->primitive_type_vector [c_primitive_type_int] = builtin->builtin_int; |
| 1153 | lai->primitive_type_vector [c_primitive_type_long] = builtin->builtin_long; |
| 1154 | lai->primitive_type_vector [c_primitive_type_short] = builtin->builtin_short; |
| 1155 | lai->primitive_type_vector [c_primitive_type_char] = builtin->builtin_char; |
| 1156 | lai->primitive_type_vector [c_primitive_type_float] = builtin->builtin_float; |
| 1157 | lai->primitive_type_vector [c_primitive_type_double] = builtin->builtin_double; |
| 1158 | lai->primitive_type_vector [c_primitive_type_void] = builtin->builtin_void; |
| 1159 | lai->primitive_type_vector [c_primitive_type_long_long] = builtin->builtin_long_long; |
| 1160 | lai->primitive_type_vector [c_primitive_type_signed_char] = builtin->builtin_signed_char; |
| 1161 | lai->primitive_type_vector [c_primitive_type_unsigned_char] = builtin->builtin_unsigned_char; |
| 1162 | lai->primitive_type_vector [c_primitive_type_unsigned_short] = builtin->builtin_unsigned_short; |
| 1163 | lai->primitive_type_vector [c_primitive_type_unsigned_int] = builtin->builtin_unsigned_int; |
| 1164 | lai->primitive_type_vector [c_primitive_type_unsigned_long] = builtin->builtin_unsigned_long; |
| 1165 | lai->primitive_type_vector [c_primitive_type_unsigned_long_long] = builtin->builtin_unsigned_long_long; |
| 1166 | lai->primitive_type_vector [c_primitive_type_long_double] = builtin->builtin_long_double; |
| 1167 | lai->primitive_type_vector [c_primitive_type_complex] = builtin->builtin_complex; |
| 1168 | lai->primitive_type_vector [c_primitive_type_double_complex] = builtin->builtin_double_complex; |
| 1169 | lai->primitive_type_vector [c_primitive_type_decfloat] = builtin->builtin_decfloat; |
| 1170 | lai->primitive_type_vector [c_primitive_type_decdouble] = builtin->builtin_decdouble; |
| 1171 | lai->primitive_type_vector [c_primitive_type_declong] = builtin->builtin_declong; |
| 1172 | |
| 1173 | lai->bool_type_default = builtin->builtin_int; |
| 1174 | } |
| 1175 | |
| 1176 | const struct exp_descriptor exp_descriptor_c = |
| 1177 | { |
| 1178 | print_subexp_standard, |
| 1179 | operator_length_standard, |
| 1180 | operator_check_standard, |
| 1181 | op_name_standard, |
| 1182 | dump_subexp_body_standard, |
| 1183 | evaluate_subexp_c |
| 1184 | }; |
| 1185 | |
| 1186 | const struct language_defn c_language_defn = |
| 1187 | { |
| 1188 | "c", /* Language name */ |
| 1189 | language_c, |
| 1190 | range_check_off, |
| 1191 | type_check_off, |
| 1192 | case_sensitive_on, |
| 1193 | array_row_major, |
| 1194 | macro_expansion_c, |
| 1195 | &exp_descriptor_c, |
| 1196 | c_parse, |
| 1197 | c_error, |
| 1198 | null_post_parser, |
| 1199 | c_printchar, /* Print a character constant */ |
| 1200 | c_printstr, /* Function to print string constant */ |
| 1201 | c_emit_char, /* Print a single char */ |
| 1202 | c_print_type, /* Print a type using appropriate syntax */ |
| 1203 | c_print_typedef, /* Print a typedef using appropriate syntax */ |
| 1204 | c_val_print, /* Print a value using appropriate syntax */ |
| 1205 | c_value_print, /* Print a top-level value */ |
| 1206 | NULL, /* Language specific skip_trampoline */ |
| 1207 | NULL, /* name_of_this */ |
| 1208 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 1209 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
| 1210 | NULL, /* Language specific symbol demangler */ |
| 1211 | NULL, /* Language specific |
| 1212 | class_name_from_physname */ |
| 1213 | c_op_print_tab, /* expression operators for printing */ |
| 1214 | 1, /* c-style arrays */ |
| 1215 | 0, /* String lower bound */ |
| 1216 | default_word_break_characters, |
| 1217 | default_make_symbol_completion_list, |
| 1218 | c_language_arch_info, |
| 1219 | default_print_array_index, |
| 1220 | default_pass_by_reference, |
| 1221 | c_get_string, |
| 1222 | LANG_MAGIC |
| 1223 | }; |
| 1224 | |
| 1225 | enum cplus_primitive_types { |
| 1226 | cplus_primitive_type_int, |
| 1227 | cplus_primitive_type_long, |
| 1228 | cplus_primitive_type_short, |
| 1229 | cplus_primitive_type_char, |
| 1230 | cplus_primitive_type_float, |
| 1231 | cplus_primitive_type_double, |
| 1232 | cplus_primitive_type_void, |
| 1233 | cplus_primitive_type_long_long, |
| 1234 | cplus_primitive_type_signed_char, |
| 1235 | cplus_primitive_type_unsigned_char, |
| 1236 | cplus_primitive_type_unsigned_short, |
| 1237 | cplus_primitive_type_unsigned_int, |
| 1238 | cplus_primitive_type_unsigned_long, |
| 1239 | cplus_primitive_type_unsigned_long_long, |
| 1240 | cplus_primitive_type_long_double, |
| 1241 | cplus_primitive_type_complex, |
| 1242 | cplus_primitive_type_double_complex, |
| 1243 | cplus_primitive_type_bool, |
| 1244 | cplus_primitive_type_decfloat, |
| 1245 | cplus_primitive_type_decdouble, |
| 1246 | cplus_primitive_type_declong, |
| 1247 | nr_cplus_primitive_types |
| 1248 | }; |
| 1249 | |
| 1250 | static void |
| 1251 | cplus_language_arch_info (struct gdbarch *gdbarch, |
| 1252 | struct language_arch_info *lai) |
| 1253 | { |
| 1254 | const struct builtin_type *builtin = builtin_type (gdbarch); |
| 1255 | |
| 1256 | lai->string_char_type = builtin->builtin_char; |
| 1257 | lai->primitive_type_vector |
| 1258 | = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_cplus_primitive_types + 1, |
| 1259 | struct type *); |
| 1260 | lai->primitive_type_vector [cplus_primitive_type_int] |
| 1261 | = builtin->builtin_int; |
| 1262 | lai->primitive_type_vector [cplus_primitive_type_long] |
| 1263 | = builtin->builtin_long; |
| 1264 | lai->primitive_type_vector [cplus_primitive_type_short] |
| 1265 | = builtin->builtin_short; |
| 1266 | lai->primitive_type_vector [cplus_primitive_type_char] |
| 1267 | = builtin->builtin_char; |
| 1268 | lai->primitive_type_vector [cplus_primitive_type_float] |
| 1269 | = builtin->builtin_float; |
| 1270 | lai->primitive_type_vector [cplus_primitive_type_double] |
| 1271 | = builtin->builtin_double; |
| 1272 | lai->primitive_type_vector [cplus_primitive_type_void] |
| 1273 | = builtin->builtin_void; |
| 1274 | lai->primitive_type_vector [cplus_primitive_type_long_long] |
| 1275 | = builtin->builtin_long_long; |
| 1276 | lai->primitive_type_vector [cplus_primitive_type_signed_char] |
| 1277 | = builtin->builtin_signed_char; |
| 1278 | lai->primitive_type_vector [cplus_primitive_type_unsigned_char] |
| 1279 | = builtin->builtin_unsigned_char; |
| 1280 | lai->primitive_type_vector [cplus_primitive_type_unsigned_short] |
| 1281 | = builtin->builtin_unsigned_short; |
| 1282 | lai->primitive_type_vector [cplus_primitive_type_unsigned_int] |
| 1283 | = builtin->builtin_unsigned_int; |
| 1284 | lai->primitive_type_vector [cplus_primitive_type_unsigned_long] |
| 1285 | = builtin->builtin_unsigned_long; |
| 1286 | lai->primitive_type_vector [cplus_primitive_type_unsigned_long_long] |
| 1287 | = builtin->builtin_unsigned_long_long; |
| 1288 | lai->primitive_type_vector [cplus_primitive_type_long_double] |
| 1289 | = builtin->builtin_long_double; |
| 1290 | lai->primitive_type_vector [cplus_primitive_type_complex] |
| 1291 | = builtin->builtin_complex; |
| 1292 | lai->primitive_type_vector [cplus_primitive_type_double_complex] |
| 1293 | = builtin->builtin_double_complex; |
| 1294 | lai->primitive_type_vector [cplus_primitive_type_bool] |
| 1295 | = builtin->builtin_bool; |
| 1296 | lai->primitive_type_vector [cplus_primitive_type_decfloat] |
| 1297 | = builtin->builtin_decfloat; |
| 1298 | lai->primitive_type_vector [cplus_primitive_type_decdouble] |
| 1299 | = builtin->builtin_decdouble; |
| 1300 | lai->primitive_type_vector [cplus_primitive_type_declong] |
| 1301 | = builtin->builtin_declong; |
| 1302 | |
| 1303 | lai->bool_type_symbol = "bool"; |
| 1304 | lai->bool_type_default = builtin->builtin_bool; |
| 1305 | } |
| 1306 | |
| 1307 | const struct language_defn cplus_language_defn = |
| 1308 | { |
| 1309 | "c++", /* Language name */ |
| 1310 | language_cplus, |
| 1311 | range_check_off, |
| 1312 | type_check_off, |
| 1313 | case_sensitive_on, |
| 1314 | array_row_major, |
| 1315 | macro_expansion_c, |
| 1316 | &exp_descriptor_c, |
| 1317 | c_parse, |
| 1318 | c_error, |
| 1319 | null_post_parser, |
| 1320 | c_printchar, /* Print a character constant */ |
| 1321 | c_printstr, /* Function to print string constant */ |
| 1322 | c_emit_char, /* Print a single char */ |
| 1323 | c_print_type, /* Print a type using appropriate syntax */ |
| 1324 | c_print_typedef, /* Print a typedef using appropriate syntax */ |
| 1325 | c_val_print, /* Print a value using appropriate syntax */ |
| 1326 | c_value_print, /* Print a top-level value */ |
| 1327 | cplus_skip_trampoline, /* Language specific skip_trampoline */ |
| 1328 | "this", /* name_of_this */ |
| 1329 | cp_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 1330 | cp_lookup_transparent_type, /* lookup_transparent_type */ |
| 1331 | cplus_demangle, /* Language specific symbol demangler */ |
| 1332 | cp_class_name_from_physname, /* Language specific |
| 1333 | class_name_from_physname */ |
| 1334 | c_op_print_tab, /* expression operators for printing */ |
| 1335 | 1, /* c-style arrays */ |
| 1336 | 0, /* String lower bound */ |
| 1337 | default_word_break_characters, |
| 1338 | default_make_symbol_completion_list, |
| 1339 | cplus_language_arch_info, |
| 1340 | default_print_array_index, |
| 1341 | cp_pass_by_reference, |
| 1342 | c_get_string, |
| 1343 | LANG_MAGIC |
| 1344 | }; |
| 1345 | |
| 1346 | const struct language_defn asm_language_defn = |
| 1347 | { |
| 1348 | "asm", /* Language name */ |
| 1349 | language_asm, |
| 1350 | range_check_off, |
| 1351 | type_check_off, |
| 1352 | case_sensitive_on, |
| 1353 | array_row_major, |
| 1354 | macro_expansion_c, |
| 1355 | &exp_descriptor_c, |
| 1356 | c_parse, |
| 1357 | c_error, |
| 1358 | null_post_parser, |
| 1359 | c_printchar, /* Print a character constant */ |
| 1360 | c_printstr, /* Function to print string constant */ |
| 1361 | c_emit_char, /* Print a single char */ |
| 1362 | c_print_type, /* Print a type using appropriate syntax */ |
| 1363 | c_print_typedef, /* Print a typedef using appropriate syntax */ |
| 1364 | c_val_print, /* Print a value using appropriate syntax */ |
| 1365 | c_value_print, /* Print a top-level value */ |
| 1366 | NULL, /* Language specific skip_trampoline */ |
| 1367 | NULL, /* name_of_this */ |
| 1368 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 1369 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
| 1370 | NULL, /* Language specific symbol demangler */ |
| 1371 | NULL, /* Language specific |
| 1372 | class_name_from_physname */ |
| 1373 | c_op_print_tab, /* expression operators for printing */ |
| 1374 | 1, /* c-style arrays */ |
| 1375 | 0, /* String lower bound */ |
| 1376 | default_word_break_characters, |
| 1377 | default_make_symbol_completion_list, |
| 1378 | c_language_arch_info, /* FIXME: la_language_arch_info. */ |
| 1379 | default_print_array_index, |
| 1380 | default_pass_by_reference, |
| 1381 | c_get_string, |
| 1382 | LANG_MAGIC |
| 1383 | }; |
| 1384 | |
| 1385 | /* The following language_defn does not represent a real language. |
| 1386 | It just provides a minimal support a-la-C that should allow users |
| 1387 | to do some simple operations when debugging applications that use |
| 1388 | a language currently not supported by GDB. */ |
| 1389 | |
| 1390 | const struct language_defn minimal_language_defn = |
| 1391 | { |
| 1392 | "minimal", /* Language name */ |
| 1393 | language_minimal, |
| 1394 | range_check_off, |
| 1395 | type_check_off, |
| 1396 | case_sensitive_on, |
| 1397 | array_row_major, |
| 1398 | macro_expansion_c, |
| 1399 | &exp_descriptor_c, |
| 1400 | c_parse, |
| 1401 | c_error, |
| 1402 | null_post_parser, |
| 1403 | c_printchar, /* Print a character constant */ |
| 1404 | c_printstr, /* Function to print string constant */ |
| 1405 | c_emit_char, /* Print a single char */ |
| 1406 | c_print_type, /* Print a type using appropriate syntax */ |
| 1407 | c_print_typedef, /* Print a typedef using appropriate syntax */ |
| 1408 | c_val_print, /* Print a value using appropriate syntax */ |
| 1409 | c_value_print, /* Print a top-level value */ |
| 1410 | NULL, /* Language specific skip_trampoline */ |
| 1411 | NULL, /* name_of_this */ |
| 1412 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
| 1413 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
| 1414 | NULL, /* Language specific symbol demangler */ |
| 1415 | NULL, /* Language specific |
| 1416 | class_name_from_physname */ |
| 1417 | c_op_print_tab, /* expression operators for printing */ |
| 1418 | 1, /* c-style arrays */ |
| 1419 | 0, /* String lower bound */ |
| 1420 | default_word_break_characters, |
| 1421 | default_make_symbol_completion_list, |
| 1422 | c_language_arch_info, |
| 1423 | default_print_array_index, |
| 1424 | default_pass_by_reference, |
| 1425 | c_get_string, |
| 1426 | LANG_MAGIC |
| 1427 | }; |
| 1428 | |
| 1429 | void |
| 1430 | _initialize_c_language (void) |
| 1431 | { |
| 1432 | add_language (&c_language_defn); |
| 1433 | add_language (&cplus_language_defn); |
| 1434 | add_language (&asm_language_defn); |
| 1435 | add_language (&minimal_language_defn); |
| 1436 | } |