| 1 | /* Support for printing C values for GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright (C) 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
| 4 | 1998, 1999, 2000, 2001, 2003, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
| 5 | Free Software Foundation, Inc. |
| 6 | |
| 7 | This file is part of GDB. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 3 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 21 | |
| 22 | #include "defs.h" |
| 23 | #include "gdb_string.h" |
| 24 | #include "symtab.h" |
| 25 | #include "gdbtypes.h" |
| 26 | #include "expression.h" |
| 27 | #include "value.h" |
| 28 | #include "valprint.h" |
| 29 | #include "language.h" |
| 30 | #include "c-lang.h" |
| 31 | #include "cp-abi.h" |
| 32 | #include "target.h" |
| 33 | \f |
| 34 | |
| 35 | /* Print function pointer with inferior address ADDRESS onto stdio |
| 36 | stream STREAM. */ |
| 37 | |
| 38 | static void |
| 39 | print_function_pointer_address (struct gdbarch *gdbarch, |
| 40 | CORE_ADDR address, |
| 41 | struct ui_file *stream, |
| 42 | int addressprint) |
| 43 | { |
| 44 | CORE_ADDR func_addr |
| 45 | = gdbarch_convert_from_func_ptr_addr (gdbarch, address, |
| 46 | ¤t_target); |
| 47 | |
| 48 | /* If the function pointer is represented by a description, print |
| 49 | the address of the description. */ |
| 50 | if (addressprint && func_addr != address) |
| 51 | { |
| 52 | fputs_filtered ("@", stream); |
| 53 | fputs_filtered (paddress (gdbarch, address), stream); |
| 54 | fputs_filtered (": ", stream); |
| 55 | } |
| 56 | print_address_demangle (gdbarch, func_addr, stream, demangle); |
| 57 | } |
| 58 | |
| 59 | |
| 60 | /* A helper for c_textual_element_type. This checks the name of the |
| 61 | typedef. This is bogus but it isn't apparent that the compiler |
| 62 | provides us the help we may need. */ |
| 63 | |
| 64 | static int |
| 65 | textual_name (const char *name) |
| 66 | { |
| 67 | return (!strcmp (name, "wchar_t") |
| 68 | || !strcmp (name, "char16_t") |
| 69 | || !strcmp (name, "char32_t")); |
| 70 | } |
| 71 | |
| 72 | /* Apply a heuristic to decide whether an array of TYPE or a pointer |
| 73 | to TYPE should be printed as a textual string. Return non-zero if |
| 74 | it should, or zero if it should be treated as an array of integers |
| 75 | or pointer to integers. FORMAT is the current format letter, or 0 |
| 76 | if none. |
| 77 | |
| 78 | We guess that "char" is a character. Explicitly signed and |
| 79 | unsigned character types are also characters. Integer data from |
| 80 | vector types is not. The user can override this by using the /s |
| 81 | format letter. */ |
| 82 | |
| 83 | int |
| 84 | c_textual_element_type (struct type *type, char format) |
| 85 | { |
| 86 | struct type *true_type, *iter_type; |
| 87 | |
| 88 | if (format != 0 && format != 's') |
| 89 | return 0; |
| 90 | |
| 91 | /* We also rely on this for its side effect of setting up all the |
| 92 | typedef pointers. */ |
| 93 | true_type = check_typedef (type); |
| 94 | |
| 95 | /* TYPE_CODE_CHAR is always textual. */ |
| 96 | if (TYPE_CODE (true_type) == TYPE_CODE_CHAR) |
| 97 | return 1; |
| 98 | |
| 99 | /* Any other character-like types must be integral. */ |
| 100 | if (TYPE_CODE (true_type) != TYPE_CODE_INT) |
| 101 | return 0; |
| 102 | |
| 103 | /* We peel typedefs one by one, looking for a match. */ |
| 104 | iter_type = type; |
| 105 | while (iter_type) |
| 106 | { |
| 107 | /* Check the name of the type. */ |
| 108 | if (TYPE_NAME (iter_type) && textual_name (TYPE_NAME (iter_type))) |
| 109 | return 1; |
| 110 | |
| 111 | if (TYPE_CODE (iter_type) != TYPE_CODE_TYPEDEF) |
| 112 | break; |
| 113 | |
| 114 | /* Peel a single typedef. If the typedef doesn't have a target |
| 115 | type, we use check_typedef and hope the result is ok -- it |
| 116 | might be for C++, where wchar_t is a built-in type. */ |
| 117 | if (TYPE_TARGET_TYPE (iter_type)) |
| 118 | iter_type = TYPE_TARGET_TYPE (iter_type); |
| 119 | else |
| 120 | iter_type = check_typedef (iter_type); |
| 121 | } |
| 122 | |
| 123 | if (format == 's') |
| 124 | { |
| 125 | /* Print this as a string if we can manage it. For now, no wide |
| 126 | character support. */ |
| 127 | if (TYPE_CODE (true_type) == TYPE_CODE_INT |
| 128 | && TYPE_LENGTH (true_type) == 1) |
| 129 | return 1; |
| 130 | } |
| 131 | else |
| 132 | { |
| 133 | /* If a one-byte TYPE_CODE_INT is missing the not-a-character |
| 134 | flag, then we treat it as text; otherwise, we assume it's |
| 135 | being used as data. */ |
| 136 | if (TYPE_CODE (true_type) == TYPE_CODE_INT |
| 137 | && TYPE_LENGTH (true_type) == 1 |
| 138 | && !TYPE_NOTTEXT (true_type)) |
| 139 | return 1; |
| 140 | } |
| 141 | |
| 142 | return 0; |
| 143 | } |
| 144 | |
| 145 | /* See val_print for a description of the various parameters of this |
| 146 | function; they are identical. The semantics of the return value is |
| 147 | also identical to val_print. */ |
| 148 | |
| 149 | int |
| 150 | c_val_print (struct type *type, const gdb_byte *valaddr, |
| 151 | int embedded_offset, CORE_ADDR address, |
| 152 | struct ui_file *stream, int recurse, |
| 153 | const struct value *original_value, |
| 154 | const struct value_print_options *options) |
| 155 | { |
| 156 | struct gdbarch *gdbarch = get_type_arch (type); |
| 157 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 158 | unsigned int i = 0; /* Number of characters printed. */ |
| 159 | unsigned len; |
| 160 | struct type *elttype, *unresolved_elttype; |
| 161 | struct type *unresolved_type = type; |
| 162 | unsigned eltlen; |
| 163 | LONGEST val; |
| 164 | CORE_ADDR addr; |
| 165 | |
| 166 | CHECK_TYPEDEF (type); |
| 167 | switch (TYPE_CODE (type)) |
| 168 | { |
| 169 | case TYPE_CODE_ARRAY: |
| 170 | unresolved_elttype = TYPE_TARGET_TYPE (type); |
| 171 | elttype = check_typedef (unresolved_elttype); |
| 172 | if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (unresolved_elttype) > 0) |
| 173 | { |
| 174 | LONGEST low_bound, high_bound; |
| 175 | |
| 176 | if (!get_array_bounds (type, &low_bound, &high_bound)) |
| 177 | error (_("Could not determine the array high bound")); |
| 178 | |
| 179 | eltlen = TYPE_LENGTH (elttype); |
| 180 | len = high_bound - low_bound + 1; |
| 181 | if (options->prettyprint_arrays) |
| 182 | { |
| 183 | print_spaces_filtered (2 + 2 * recurse, stream); |
| 184 | } |
| 185 | |
| 186 | /* Print arrays of textual chars with a string syntax, as |
| 187 | long as the entire array is valid. */ |
| 188 | if (c_textual_element_type (unresolved_elttype, |
| 189 | options->format) |
| 190 | && value_bytes_available (original_value, embedded_offset, |
| 191 | TYPE_LENGTH (type)) |
| 192 | && value_bits_valid (original_value, |
| 193 | TARGET_CHAR_BIT * embedded_offset, |
| 194 | TARGET_CHAR_BIT * TYPE_LENGTH (type))) |
| 195 | { |
| 196 | /* If requested, look for the first null char and only |
| 197 | print elements up to it. */ |
| 198 | if (options->stop_print_at_null) |
| 199 | { |
| 200 | unsigned int temp_len; |
| 201 | |
| 202 | for (temp_len = 0; |
| 203 | (temp_len < len |
| 204 | && temp_len < options->print_max |
| 205 | && extract_unsigned_integer (valaddr + embedded_offset |
| 206 | + temp_len * eltlen, |
| 207 | eltlen, byte_order) != 0); |
| 208 | ++temp_len) |
| 209 | ; |
| 210 | len = temp_len; |
| 211 | } |
| 212 | |
| 213 | LA_PRINT_STRING (stream, unresolved_elttype, |
| 214 | valaddr + embedded_offset, len, |
| 215 | NULL, 0, options); |
| 216 | i = len; |
| 217 | } |
| 218 | else |
| 219 | { |
| 220 | fprintf_filtered (stream, "{"); |
| 221 | /* If this is a virtual function table, print the 0th |
| 222 | entry specially, and the rest of the members |
| 223 | normally. */ |
| 224 | if (cp_is_vtbl_ptr_type (elttype)) |
| 225 | { |
| 226 | i = 1; |
| 227 | fprintf_filtered (stream, _("%d vtable entries"), |
| 228 | len - 1); |
| 229 | } |
| 230 | else |
| 231 | { |
| 232 | i = 0; |
| 233 | } |
| 234 | val_print_array_elements (type, valaddr, embedded_offset, |
| 235 | address, stream, |
| 236 | recurse, original_value, options, i); |
| 237 | fprintf_filtered (stream, "}"); |
| 238 | } |
| 239 | break; |
| 240 | } |
| 241 | /* Array of unspecified length: treat like pointer to first |
| 242 | elt. */ |
| 243 | addr = address + embedded_offset; |
| 244 | goto print_unpacked_pointer; |
| 245 | |
| 246 | case TYPE_CODE_MEMBERPTR: |
| 247 | if (options->format) |
| 248 | { |
| 249 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
| 250 | original_value, options, 0, stream); |
| 251 | break; |
| 252 | } |
| 253 | cp_print_class_member (valaddr + embedded_offset, type, stream, "&"); |
| 254 | break; |
| 255 | |
| 256 | case TYPE_CODE_METHODPTR: |
| 257 | cplus_print_method_ptr (valaddr + embedded_offset, type, stream); |
| 258 | break; |
| 259 | |
| 260 | case TYPE_CODE_PTR: |
| 261 | if (options->format && options->format != 's') |
| 262 | { |
| 263 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
| 264 | original_value, options, 0, stream); |
| 265 | break; |
| 266 | } |
| 267 | if (options->vtblprint && cp_is_vtbl_ptr_type (type)) |
| 268 | { |
| 269 | /* Print the unmangled name if desired. */ |
| 270 | /* Print vtable entry - we only get here if we ARE using |
| 271 | -fvtable_thunks. (Otherwise, look under |
| 272 | TYPE_CODE_STRUCT.) */ |
| 273 | CORE_ADDR addr |
| 274 | = extract_typed_address (valaddr + embedded_offset, type); |
| 275 | |
| 276 | print_function_pointer_address (gdbarch, addr, stream, |
| 277 | options->addressprint); |
| 278 | break; |
| 279 | } |
| 280 | unresolved_elttype = TYPE_TARGET_TYPE (type); |
| 281 | elttype = check_typedef (unresolved_elttype); |
| 282 | { |
| 283 | addr = unpack_pointer (type, valaddr + embedded_offset); |
| 284 | print_unpacked_pointer: |
| 285 | |
| 286 | if (TYPE_CODE (elttype) == TYPE_CODE_FUNC) |
| 287 | { |
| 288 | /* Try to print what function it points to. */ |
| 289 | print_function_pointer_address (gdbarch, addr, stream, |
| 290 | options->addressprint); |
| 291 | /* Return value is irrelevant except for string |
| 292 | pointers. */ |
| 293 | return (0); |
| 294 | } |
| 295 | |
| 296 | if (options->addressprint) |
| 297 | fputs_filtered (paddress (gdbarch, addr), stream); |
| 298 | |
| 299 | /* For a pointer to a textual type, also print the string |
| 300 | pointed to, unless pointer is null. */ |
| 301 | |
| 302 | if (c_textual_element_type (unresolved_elttype, |
| 303 | options->format) |
| 304 | && addr != 0) |
| 305 | { |
| 306 | i = val_print_string (unresolved_elttype, NULL, |
| 307 | addr, -1, |
| 308 | stream, options); |
| 309 | } |
| 310 | else if (cp_is_vtbl_member (type)) |
| 311 | { |
| 312 | /* Print vtbl's nicely. */ |
| 313 | CORE_ADDR vt_address = unpack_pointer (type, |
| 314 | valaddr |
| 315 | + embedded_offset); |
| 316 | |
| 317 | struct minimal_symbol *msymbol = |
| 318 | lookup_minimal_symbol_by_pc (vt_address); |
| 319 | if ((msymbol != NULL) |
| 320 | && (vt_address == SYMBOL_VALUE_ADDRESS (msymbol))) |
| 321 | { |
| 322 | fputs_filtered (" <", stream); |
| 323 | fputs_filtered (SYMBOL_PRINT_NAME (msymbol), stream); |
| 324 | fputs_filtered (">", stream); |
| 325 | } |
| 326 | if (vt_address && options->vtblprint) |
| 327 | { |
| 328 | struct value *vt_val; |
| 329 | struct symbol *wsym = (struct symbol *) NULL; |
| 330 | struct type *wtype; |
| 331 | struct block *block = (struct block *) NULL; |
| 332 | int is_this_fld; |
| 333 | |
| 334 | if (msymbol != NULL) |
| 335 | wsym = lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol), |
| 336 | block, VAR_DOMAIN, |
| 337 | &is_this_fld); |
| 338 | |
| 339 | if (wsym) |
| 340 | { |
| 341 | wtype = SYMBOL_TYPE (wsym); |
| 342 | } |
| 343 | else |
| 344 | { |
| 345 | wtype = unresolved_elttype; |
| 346 | } |
| 347 | vt_val = value_at (wtype, vt_address); |
| 348 | common_val_print (vt_val, stream, recurse + 1, |
| 349 | options, current_language); |
| 350 | if (options->pretty) |
| 351 | { |
| 352 | fprintf_filtered (stream, "\n"); |
| 353 | print_spaces_filtered (2 + 2 * recurse, stream); |
| 354 | } |
| 355 | } |
| 356 | } |
| 357 | |
| 358 | /* Return number of characters printed, including the |
| 359 | terminating '\0' if we reached the end. val_print_string |
| 360 | takes care including the terminating '\0' if |
| 361 | necessary. */ |
| 362 | return i; |
| 363 | } |
| 364 | break; |
| 365 | |
| 366 | case TYPE_CODE_REF: |
| 367 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); |
| 368 | if (options->addressprint) |
| 369 | { |
| 370 | CORE_ADDR addr |
| 371 | = extract_typed_address (valaddr + embedded_offset, type); |
| 372 | |
| 373 | fprintf_filtered (stream, "@"); |
| 374 | fputs_filtered (paddress (gdbarch, addr), stream); |
| 375 | if (options->deref_ref) |
| 376 | fputs_filtered (": ", stream); |
| 377 | } |
| 378 | /* De-reference the reference. */ |
| 379 | if (options->deref_ref) |
| 380 | { |
| 381 | if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF) |
| 382 | { |
| 383 | struct value *deref_val = |
| 384 | value_at |
| 385 | (TYPE_TARGET_TYPE (type), |
| 386 | unpack_pointer (type, valaddr + embedded_offset)); |
| 387 | |
| 388 | common_val_print (deref_val, stream, recurse, options, |
| 389 | current_language); |
| 390 | } |
| 391 | else |
| 392 | fputs_filtered ("???", stream); |
| 393 | } |
| 394 | break; |
| 395 | |
| 396 | case TYPE_CODE_UNION: |
| 397 | if (recurse && !options->unionprint) |
| 398 | { |
| 399 | fprintf_filtered (stream, "{...}"); |
| 400 | break; |
| 401 | } |
| 402 | /* Fall through. */ |
| 403 | case TYPE_CODE_STRUCT: |
| 404 | /*FIXME: Abstract this away. */ |
| 405 | if (options->vtblprint && cp_is_vtbl_ptr_type (type)) |
| 406 | { |
| 407 | /* Print the unmangled name if desired. */ |
| 408 | /* Print vtable entry - we only get here if NOT using |
| 409 | -fvtable_thunks. (Otherwise, look under |
| 410 | TYPE_CODE_PTR.) */ |
| 411 | int offset = (embedded_offset |
| 412 | + TYPE_FIELD_BITPOS (type, |
| 413 | VTBL_FNADDR_OFFSET) / 8); |
| 414 | struct type *field_type = TYPE_FIELD_TYPE (type, |
| 415 | VTBL_FNADDR_OFFSET); |
| 416 | CORE_ADDR addr |
| 417 | = extract_typed_address (valaddr + offset, field_type); |
| 418 | |
| 419 | print_function_pointer_address (gdbarch, addr, stream, |
| 420 | options->addressprint); |
| 421 | } |
| 422 | else |
| 423 | cp_print_value_fields_rtti (type, valaddr, |
| 424 | embedded_offset, address, |
| 425 | stream, recurse, |
| 426 | original_value, options, |
| 427 | NULL, 0); |
| 428 | break; |
| 429 | |
| 430 | case TYPE_CODE_ENUM: |
| 431 | if (options->format) |
| 432 | { |
| 433 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
| 434 | original_value, options, 0, stream); |
| 435 | break; |
| 436 | } |
| 437 | len = TYPE_NFIELDS (type); |
| 438 | val = unpack_long (type, valaddr + embedded_offset); |
| 439 | for (i = 0; i < len; i++) |
| 440 | { |
| 441 | QUIT; |
| 442 | if (val == TYPE_FIELD_BITPOS (type, i)) |
| 443 | { |
| 444 | break; |
| 445 | } |
| 446 | } |
| 447 | if (i < len) |
| 448 | { |
| 449 | fputs_filtered (TYPE_FIELD_NAME (type, i), stream); |
| 450 | } |
| 451 | else |
| 452 | { |
| 453 | print_longest (stream, 'd', 0, val); |
| 454 | } |
| 455 | break; |
| 456 | |
| 457 | case TYPE_CODE_FLAGS: |
| 458 | if (options->format) |
| 459 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
| 460 | original_value, options, 0, stream); |
| 461 | else |
| 462 | val_print_type_code_flags (type, valaddr + embedded_offset, |
| 463 | stream); |
| 464 | break; |
| 465 | |
| 466 | case TYPE_CODE_FUNC: |
| 467 | case TYPE_CODE_METHOD: |
| 468 | if (options->format) |
| 469 | { |
| 470 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
| 471 | original_value, options, 0, stream); |
| 472 | break; |
| 473 | } |
| 474 | /* FIXME, we should consider, at least for ANSI C language, |
| 475 | eliminating the distinction made between FUNCs and POINTERs |
| 476 | to FUNCs. */ |
| 477 | fprintf_filtered (stream, "{"); |
| 478 | type_print (type, "", stream, -1); |
| 479 | fprintf_filtered (stream, "} "); |
| 480 | /* Try to print what function it points to, and its address. */ |
| 481 | print_address_demangle (gdbarch, address, stream, demangle); |
| 482 | break; |
| 483 | |
| 484 | case TYPE_CODE_BOOL: |
| 485 | if (options->format || options->output_format) |
| 486 | { |
| 487 | struct value_print_options opts = *options; |
| 488 | opts.format = (options->format ? options->format |
| 489 | : options->output_format); |
| 490 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
| 491 | original_value, &opts, 0, stream); |
| 492 | } |
| 493 | else |
| 494 | { |
| 495 | val = unpack_long (type, valaddr + embedded_offset); |
| 496 | if (val == 0) |
| 497 | fputs_filtered ("false", stream); |
| 498 | else if (val == 1) |
| 499 | fputs_filtered ("true", stream); |
| 500 | else |
| 501 | print_longest (stream, 'd', 0, val); |
| 502 | } |
| 503 | break; |
| 504 | |
| 505 | case TYPE_CODE_RANGE: |
| 506 | /* FIXME: create_range_type does not set the unsigned bit in a |
| 507 | range type (I think it probably should copy it from the |
| 508 | target type), so we won't print values which are too large to |
| 509 | fit in a signed integer correctly. */ |
| 510 | /* FIXME: Doesn't handle ranges of enums correctly. (Can't just |
| 511 | print with the target type, though, because the size of our |
| 512 | type and the target type might differ). */ |
| 513 | /* FALLTHROUGH */ |
| 514 | |
| 515 | case TYPE_CODE_INT: |
| 516 | if (options->format || options->output_format) |
| 517 | { |
| 518 | struct value_print_options opts = *options; |
| 519 | |
| 520 | opts.format = (options->format ? options->format |
| 521 | : options->output_format); |
| 522 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
| 523 | original_value, &opts, 0, stream); |
| 524 | } |
| 525 | else |
| 526 | { |
| 527 | val_print_type_code_int (type, valaddr + embedded_offset, |
| 528 | stream); |
| 529 | /* C and C++ has no single byte int type, char is used |
| 530 | instead. Since we don't know whether the value is really |
| 531 | intended to be used as an integer or a character, print |
| 532 | the character equivalent as well. */ |
| 533 | if (c_textual_element_type (unresolved_type, options->format)) |
| 534 | { |
| 535 | fputs_filtered (" ", stream); |
| 536 | LA_PRINT_CHAR (unpack_long (type, valaddr + embedded_offset), |
| 537 | unresolved_type, stream); |
| 538 | } |
| 539 | } |
| 540 | break; |
| 541 | |
| 542 | case TYPE_CODE_CHAR: |
| 543 | if (options->format || options->output_format) |
| 544 | { |
| 545 | struct value_print_options opts = *options; |
| 546 | opts.format = (options->format ? options->format |
| 547 | : options->output_format); |
| 548 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
| 549 | original_value, &opts, 0, stream); |
| 550 | } |
| 551 | else |
| 552 | { |
| 553 | val = unpack_long (type, valaddr + embedded_offset); |
| 554 | if (TYPE_UNSIGNED (type)) |
| 555 | fprintf_filtered (stream, "%u", (unsigned int) val); |
| 556 | else |
| 557 | fprintf_filtered (stream, "%d", (int) val); |
| 558 | fputs_filtered (" ", stream); |
| 559 | LA_PRINT_CHAR (val, unresolved_type, stream); |
| 560 | } |
| 561 | break; |
| 562 | |
| 563 | case TYPE_CODE_FLT: |
| 564 | if (options->format) |
| 565 | { |
| 566 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
| 567 | original_value, options, 0, stream); |
| 568 | } |
| 569 | else |
| 570 | { |
| 571 | print_floating (valaddr + embedded_offset, type, stream); |
| 572 | } |
| 573 | break; |
| 574 | |
| 575 | case TYPE_CODE_DECFLOAT: |
| 576 | if (options->format) |
| 577 | val_print_scalar_formatted (type, valaddr, embedded_offset, |
| 578 | original_value, options, 0, stream); |
| 579 | else |
| 580 | print_decimal_floating (valaddr + embedded_offset, |
| 581 | type, stream); |
| 582 | break; |
| 583 | |
| 584 | case TYPE_CODE_VOID: |
| 585 | fprintf_filtered (stream, "void"); |
| 586 | break; |
| 587 | |
| 588 | case TYPE_CODE_ERROR: |
| 589 | fprintf_filtered (stream, "%s", TYPE_ERROR_NAME (type)); |
| 590 | break; |
| 591 | |
| 592 | case TYPE_CODE_UNDEF: |
| 593 | /* This happens (without TYPE_FLAG_STUB set) on systems which |
| 594 | don't use dbx xrefs (NO_DBX_XREFS in gcc) if a file has a |
| 595 | "struct foo *bar" and no complete type for struct foo in that |
| 596 | file. */ |
| 597 | fprintf_filtered (stream, _("<incomplete type>")); |
| 598 | break; |
| 599 | |
| 600 | case TYPE_CODE_COMPLEX: |
| 601 | if (options->format) |
| 602 | val_print_scalar_formatted (TYPE_TARGET_TYPE (type), |
| 603 | valaddr, embedded_offset, |
| 604 | original_value, options, 0, stream); |
| 605 | else |
| 606 | print_floating (valaddr + embedded_offset, |
| 607 | TYPE_TARGET_TYPE (type), |
| 608 | stream); |
| 609 | fprintf_filtered (stream, " + "); |
| 610 | if (options->format) |
| 611 | val_print_scalar_formatted (TYPE_TARGET_TYPE (type), |
| 612 | valaddr, |
| 613 | embedded_offset |
| 614 | + TYPE_LENGTH (TYPE_TARGET_TYPE (type)), |
| 615 | original_value, |
| 616 | options, 0, stream); |
| 617 | else |
| 618 | print_floating (valaddr + embedded_offset |
| 619 | + TYPE_LENGTH (TYPE_TARGET_TYPE (type)), |
| 620 | TYPE_TARGET_TYPE (type), |
| 621 | stream); |
| 622 | fprintf_filtered (stream, " * I"); |
| 623 | break; |
| 624 | |
| 625 | default: |
| 626 | error (_("Invalid C/C++ type code %d in symbol table."), |
| 627 | TYPE_CODE (type)); |
| 628 | } |
| 629 | gdb_flush (stream); |
| 630 | return (0); |
| 631 | } |
| 632 | \f |
| 633 | int |
| 634 | c_value_print (struct value *val, struct ui_file *stream, |
| 635 | const struct value_print_options *options) |
| 636 | { |
| 637 | struct type *type, *real_type, *val_type; |
| 638 | int full, top, using_enc; |
| 639 | struct value_print_options opts = *options; |
| 640 | |
| 641 | opts.deref_ref = 1; |
| 642 | |
| 643 | /* If it is a pointer, indicate what it points to. |
| 644 | |
| 645 | Print type also if it is a reference. |
| 646 | |
| 647 | C++: if it is a member pointer, we will take care |
| 648 | of that when we print it. */ |
| 649 | |
| 650 | /* Preserve the original type before stripping typedefs. We prefer |
| 651 | to pass down the original type when possible, but for local |
| 652 | checks it is better to look past the typedefs. */ |
| 653 | val_type = value_type (val); |
| 654 | type = check_typedef (val_type); |
| 655 | |
| 656 | if (TYPE_CODE (type) == TYPE_CODE_PTR |
| 657 | || TYPE_CODE (type) == TYPE_CODE_REF) |
| 658 | { |
| 659 | /* Hack: remove (char *) for char strings. Their |
| 660 | type is indicated by the quoted string anyway. |
| 661 | (Don't use c_textual_element_type here; quoted strings |
| 662 | are always exactly (char *), (wchar_t *), or the like. */ |
| 663 | if (TYPE_CODE (val_type) == TYPE_CODE_PTR |
| 664 | && TYPE_NAME (val_type) == NULL |
| 665 | && TYPE_NAME (TYPE_TARGET_TYPE (val_type)) != NULL |
| 666 | && (strcmp (TYPE_NAME (TYPE_TARGET_TYPE (val_type)), |
| 667 | "char") == 0 |
| 668 | || textual_name (TYPE_NAME (TYPE_TARGET_TYPE (val_type))))) |
| 669 | { |
| 670 | /* Print nothing. */ |
| 671 | } |
| 672 | else if (options->objectprint |
| 673 | && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_CLASS)) |
| 674 | { |
| 675 | |
| 676 | if (TYPE_CODE(type) == TYPE_CODE_REF) |
| 677 | { |
| 678 | /* Copy value, change to pointer, so we don't get an |
| 679 | error about a non-pointer type in |
| 680 | value_rtti_target_type. */ |
| 681 | struct value *temparg; |
| 682 | temparg=value_copy(val); |
| 683 | deprecated_set_value_type |
| 684 | (temparg, lookup_pointer_type (TYPE_TARGET_TYPE (type))); |
| 685 | val = temparg; |
| 686 | } |
| 687 | /* Pointer to class, check real type of object. */ |
| 688 | fprintf_filtered (stream, "("); |
| 689 | |
| 690 | if (value_entirely_available (val)) |
| 691 | { |
| 692 | real_type = value_rtti_target_type (val, &full, &top, &using_enc); |
| 693 | if (real_type) |
| 694 | { |
| 695 | /* RTTI entry found. */ |
| 696 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
| 697 | { |
| 698 | /* Create a pointer type pointing to the real |
| 699 | type. */ |
| 700 | type = lookup_pointer_type (real_type); |
| 701 | } |
| 702 | else |
| 703 | { |
| 704 | /* Create a reference type referencing the real |
| 705 | type. */ |
| 706 | type = lookup_reference_type (real_type); |
| 707 | } |
| 708 | /* Need to adjust pointer value. */ |
| 709 | val = value_from_pointer (type, value_as_address (val) - top); |
| 710 | |
| 711 | /* Note: When we look up RTTI entries, we don't get |
| 712 | any information on const or volatile |
| 713 | attributes. */ |
| 714 | } |
| 715 | } |
| 716 | type_print (type, "", stream, -1); |
| 717 | fprintf_filtered (stream, ") "); |
| 718 | val_type = type; |
| 719 | } |
| 720 | else |
| 721 | { |
| 722 | /* normal case */ |
| 723 | fprintf_filtered (stream, "("); |
| 724 | type_print (value_type (val), "", stream, -1); |
| 725 | fprintf_filtered (stream, ") "); |
| 726 | } |
| 727 | } |
| 728 | |
| 729 | if (!value_initialized (val)) |
| 730 | fprintf_filtered (stream, " [uninitialized] "); |
| 731 | |
| 732 | if (options->objectprint && (TYPE_CODE (type) == TYPE_CODE_CLASS)) |
| 733 | { |
| 734 | /* Attempt to determine real type of object. */ |
| 735 | real_type = value_rtti_type (val, &full, &top, &using_enc); |
| 736 | if (real_type) |
| 737 | { |
| 738 | /* We have RTTI information, so use it. */ |
| 739 | val = value_full_object (val, real_type, |
| 740 | full, top, using_enc); |
| 741 | fprintf_filtered (stream, "(%s%s) ", |
| 742 | TYPE_NAME (real_type), |
| 743 | full ? "" : _(" [incomplete object]")); |
| 744 | /* Print out object: enclosing type is same as real_type if |
| 745 | full. */ |
| 746 | return val_print (value_enclosing_type (val), |
| 747 | value_contents_for_printing (val), 0, |
| 748 | value_address (val), stream, 0, |
| 749 | val, &opts, current_language); |
| 750 | /* Note: When we look up RTTI entries, we don't get any |
| 751 | information on const or volatile attributes. */ |
| 752 | } |
| 753 | else if (type != check_typedef (value_enclosing_type (val))) |
| 754 | { |
| 755 | /* No RTTI information, so let's do our best. */ |
| 756 | fprintf_filtered (stream, "(%s ?) ", |
| 757 | TYPE_NAME (value_enclosing_type (val))); |
| 758 | return val_print (value_enclosing_type (val), |
| 759 | value_contents_for_printing (val), 0, |
| 760 | value_address (val), stream, 0, |
| 761 | val, &opts, current_language); |
| 762 | } |
| 763 | /* Otherwise, we end up at the return outside this "if". */ |
| 764 | } |
| 765 | |
| 766 | return val_print (val_type, value_contents_for_printing (val), |
| 767 | value_embedded_offset (val), |
| 768 | value_address (val), |
| 769 | stream, 0, |
| 770 | val, &opts, current_language); |
| 771 | } |