1 /* Support for printing Ada values for GDB, the GNU debugger. 2 Copyright 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1997, 2001, 3 2002, 2003, 2004. 4 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 2 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program; if not, write to the Free Software 20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ 21 22 #include <ctype.h> 23 #include "defs.h" 24 #include "gdb_string.h" 25 #include "symtab.h" 26 #include "gdbtypes.h" 27 #include "expression.h" 28 #include "value.h" 29 #include "demangle.h" 30 #include "valprint.h" 31 #include "language.h" 32 #include "annotate.h" 33 #include "ada-lang.h" 34 #include "c-lang.h" 35 #include "infcall.h" 36 37 /* Encapsulates arguments to ada_val_print. */ 38 struct ada_val_print_args 39 { 40 struct type *type; 41 char *valaddr0; 42 int embedded_offset; 43 CORE_ADDR address; 44 struct ui_file *stream; 45 int format; 46 int deref_ref; 47 int recurse; 48 enum val_prettyprint pretty; 49 }; 50 51 static void print_record (struct type *, char *, struct ui_file *, int, 52 int, enum val_prettyprint); 53 54 static int print_field_values (struct type *, char *, struct ui_file *, 55 int, int, enum val_prettyprint, 56 int, struct type *, char *); 57 58 static int print_variant_part (struct type *, int, char *, 59 struct ui_file *, int, int, 60 enum val_prettyprint, int, struct type *, 61 char *); 62 63 static void val_print_packed_array_elements (struct type *, char *valaddr, 64 int, struct ui_file *, int, int, 65 enum val_prettyprint); 66 67 static void adjust_type_signedness (struct type *); 68 69 static int ada_val_print_stub (void *args0); 70 71 static int ada_val_print_1 (struct type *, char *, int, CORE_ADDR, 72 struct ui_file *, int, int, int, 73 enum val_prettyprint); 74 static void ada_print_floating (char *, struct type *, struct ui_file *); 75 76 77 /* Make TYPE unsigned if its range of values includes no negatives. */ 78 static void 79 adjust_type_signedness (struct type *type) 80 { 81 if (type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE 82 && TYPE_LOW_BOUND (type) >= 0) 83 TYPE_FLAGS (type) |= TYPE_FLAG_UNSIGNED; 84 } 85 86 /* Assuming TYPE is a simple, non-empty array type, prints its lower bound 87 on STREAM, if non-standard (i.e., other than 1 for numbers, other 88 than lower bound of index type for enumerated type). Returns 1 89 if something printed, otherwise 0. */ 90 91 static int 92 print_optional_low_bound (struct ui_file *stream, struct type *type) 93 { 94 struct type *index_type; 95 long low_bound; 96 97 index_type = TYPE_INDEX_TYPE (type); 98 low_bound = 0; 99 100 if (index_type == NULL) 101 return 0; 102 if (TYPE_CODE (index_type) == TYPE_CODE_RANGE) 103 { 104 low_bound = TYPE_LOW_BOUND (index_type); 105 if (low_bound > TYPE_HIGH_BOUND (index_type)) 106 return 0; 107 index_type = TYPE_TARGET_TYPE (index_type); 108 } 109 else 110 return 0; 111 112 switch (TYPE_CODE (index_type)) 113 { 114 case TYPE_CODE_ENUM: 115 if (low_bound == TYPE_FIELD_BITPOS (index_type, 0)) 116 return 0; 117 break; 118 case TYPE_CODE_UNDEF: 119 index_type = builtin_type_long; 120 /* FALL THROUGH */ 121 default: 122 if (low_bound == 1) 123 return 0; 124 break; 125 } 126 127 ada_print_scalar (index_type, (LONGEST) low_bound, stream); 128 fprintf_filtered (stream, " => "); 129 return 1; 130 } 131 132 /* Version of val_print_array_elements for GNAT-style packed arrays. 133 Prints elements of packed array of type TYPE at bit offset 134 BITOFFSET from VALADDR on STREAM. Formats according to FORMAT and 135 separates with commas. RECURSE is the recursion (nesting) level. 136 If PRETTY, uses "prettier" format. TYPE must have been decoded (as 137 by ada_coerce_to_simple_array). */ 138 139 static void 140 val_print_packed_array_elements (struct type *type, char *valaddr, 141 int bitoffset, struct ui_file *stream, 142 int format, int recurse, 143 enum val_prettyprint pretty) 144 { 145 unsigned int i; 146 unsigned int things_printed = 0; 147 unsigned len; 148 struct type *elttype; 149 unsigned eltlen; 150 unsigned long bitsize = TYPE_FIELD_BITSIZE (type, 0); 151 struct value *mark = value_mark (); 152 153 elttype = TYPE_TARGET_TYPE (type); 154 eltlen = TYPE_LENGTH (check_typedef (elttype)); 155 156 { 157 LONGEST low, high; 158 if (get_discrete_bounds (TYPE_FIELD_TYPE (type, 0), &low, &high) < 0) 159 len = 1; 160 else 161 len = high - low + 1; 162 } 163 164 i = 0; 165 annotate_array_section_begin (i, elttype); 166 167 while (i < len && things_printed < print_max) 168 { 169 struct value *v0, *v1; 170 int i0; 171 172 if (i != 0) 173 { 174 if (prettyprint_arrays) 175 { 176 fprintf_filtered (stream, ",\n"); 177 print_spaces_filtered (2 + 2 * recurse, stream); 178 } 179 else 180 { 181 fprintf_filtered (stream, ", "); 182 } 183 } 184 wrap_here (n_spaces (2 + 2 * recurse)); 185 186 i0 = i; 187 v0 = ada_value_primitive_packed_val (NULL, valaddr, 188 (i0 * bitsize) / HOST_CHAR_BIT, 189 (i0 * bitsize) % HOST_CHAR_BIT, 190 bitsize, elttype); 191 while (1) 192 { 193 i += 1; 194 if (i >= len) 195 break; 196 v1 = ada_value_primitive_packed_val (NULL, valaddr, 197 (i * bitsize) / HOST_CHAR_BIT, 198 (i * bitsize) % HOST_CHAR_BIT, 199 bitsize, elttype); 200 if (memcmp (VALUE_CONTENTS (v0), VALUE_CONTENTS (v1), eltlen) != 0) 201 break; 202 } 203 204 if (i - i0 > repeat_count_threshold) 205 { 206 val_print (elttype, VALUE_CONTENTS (v0), 0, 0, stream, format, 207 0, recurse + 1, pretty); 208 annotate_elt_rep (i - i0); 209 fprintf_filtered (stream, " <repeats %u times>", i - i0); 210 annotate_elt_rep_end (); 211 212 } 213 else 214 { 215 int j; 216 for (j = i0; j < i; j += 1) 217 { 218 if (j > i0) 219 { 220 if (prettyprint_arrays) 221 { 222 fprintf_filtered (stream, ",\n"); 223 print_spaces_filtered (2 + 2 * recurse, stream); 224 } 225 else 226 { 227 fprintf_filtered (stream, ", "); 228 } 229 wrap_here (n_spaces (2 + 2 * recurse)); 230 } 231 val_print (elttype, VALUE_CONTENTS (v0), 0, 0, stream, format, 232 0, recurse + 1, pretty); 233 annotate_elt (); 234 } 235 } 236 things_printed += i - i0; 237 } 238 annotate_array_section_end (); 239 if (i < len) 240 { 241 fprintf_filtered (stream, "..."); 242 } 243 244 value_free_to_mark (mark); 245 } 246 247 static struct type * 248 printable_val_type (struct type *type, char *valaddr) 249 { 250 return ada_to_fixed_type (ada_aligned_type (type), valaddr, 0, NULL); 251 } 252 253 /* Print the character C on STREAM as part of the contents of a literal 254 string whose delimiter is QUOTER. TYPE_LEN is the length in bytes 255 (1 or 2) of the character. */ 256 257 void 258 ada_emit_char (int c, struct ui_file *stream, int quoter, int type_len) 259 { 260 if (type_len != 2) 261 type_len = 1; 262 263 c &= (1 << (type_len * TARGET_CHAR_BIT)) - 1; 264 265 if (isascii (c) && isprint (c)) 266 { 267 if (c == quoter && c == '"') 268 fprintf_filtered (stream, "[\"%c\"]", quoter); 269 else 270 fprintf_filtered (stream, "%c", c); 271 } 272 else 273 fprintf_filtered (stream, "[\"%0*x\"]", type_len * 2, c); 274 } 275 276 /* Character #I of STRING, given that TYPE_LEN is the size in bytes (1 277 or 2) of a character. */ 278 279 static int 280 char_at (char *string, int i, int type_len) 281 { 282 if (type_len == 1) 283 return string[i]; 284 else 285 return (int) extract_unsigned_integer (string + 2 * i, 2); 286 } 287 288 /* Wrapper around memcpy to make it legal argument to ui_file_put */ 289 static void 290 ui_memcpy (void *dest, const char *buffer, long len) 291 { 292 memcpy (dest, buffer, (size_t) len); 293 ((char *) dest)[len] = '\0'; 294 } 295 296 /* Print a floating-point value of type TYPE, pointed to in GDB by 297 VALADDR, on STREAM. Use Ada formatting conventions: there must be 298 a decimal point, and at least one digit before and after the 299 point. We use GNAT format for NaNs and infinities. */ 300 static void 301 ada_print_floating (char *valaddr, struct type *type, struct ui_file *stream) 302 { 303 char buffer[64]; 304 char *s, *result; 305 int len; 306 struct ui_file *tmp_stream = mem_fileopen (); 307 struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_stream); 308 309 print_floating (valaddr, type, tmp_stream); 310 ui_file_put (tmp_stream, ui_memcpy, buffer); 311 do_cleanups (cleanups); 312 313 result = buffer; 314 len = strlen (result); 315 316 /* Modify for Ada rules. */ 317 318 s = strstr (result, "inf"); 319 if (s == NULL) 320 s = strstr (result, "Inf"); 321 if (s == NULL) 322 s = strstr (result, "INF"); 323 if (s != NULL) 324 strcpy (s, "Inf"); 325 326 if (s == NULL) 327 { 328 s = strstr (result, "nan"); 329 if (s == NULL) 330 s = strstr (result, "NaN"); 331 if (s == NULL) 332 s = strstr (result, "Nan"); 333 if (s != NULL) 334 { 335 s[0] = s[2] = 'N'; 336 if (result[0] == '-') 337 result += 1; 338 } 339 } 340 341 if (s == NULL && strchr (result, '.') == NULL) 342 { 343 s = strchr (result, 'e'); 344 if (s == NULL) 345 fprintf_filtered (stream, "%s.0", result); 346 else 347 fprintf_filtered (stream, "%.*s.0%s", (int) (s-result), result, s); 348 return; 349 } 350 fprintf_filtered (stream, "%s", result); 351 } 352 353 void 354 ada_printchar (int c, struct ui_file *stream) 355 { 356 fputs_filtered ("'", stream); 357 ada_emit_char (c, stream, '\'', 1); 358 fputs_filtered ("'", stream); 359 } 360 361 /* [From print_type_scalar in typeprint.c]. Print VAL on STREAM in a 362 form appropriate for TYPE. */ 363 364 void 365 ada_print_scalar (struct type *type, LONGEST val, struct ui_file *stream) 366 { 367 unsigned int i; 368 unsigned len; 369 370 type = ada_check_typedef (type); 371 372 switch (TYPE_CODE (type)) 373 { 374 375 case TYPE_CODE_ENUM: 376 len = TYPE_NFIELDS (type); 377 for (i = 0; i < len; i++) 378 { 379 if (TYPE_FIELD_BITPOS (type, i) == val) 380 { 381 break; 382 } 383 } 384 if (i < len) 385 { 386 fputs_filtered (ada_enum_name (TYPE_FIELD_NAME (type, i)), stream); 387 } 388 else 389 { 390 print_longest (stream, 'd', 0, val); 391 } 392 break; 393 394 case TYPE_CODE_INT: 395 print_longest (stream, TYPE_UNSIGNED (type) ? 'u' : 'd', 0, val); 396 break; 397 398 case TYPE_CODE_CHAR: 399 LA_PRINT_CHAR ((unsigned char) val, stream); 400 break; 401 402 case TYPE_CODE_BOOL: 403 fprintf_filtered (stream, val ? "true" : "false"); 404 break; 405 406 case TYPE_CODE_RANGE: 407 ada_print_scalar (TYPE_TARGET_TYPE (type), val, stream); 408 return; 409 410 case TYPE_CODE_UNDEF: 411 case TYPE_CODE_PTR: 412 case TYPE_CODE_ARRAY: 413 case TYPE_CODE_STRUCT: 414 case TYPE_CODE_UNION: 415 case TYPE_CODE_FUNC: 416 case TYPE_CODE_FLT: 417 case TYPE_CODE_VOID: 418 case TYPE_CODE_SET: 419 case TYPE_CODE_STRING: 420 case TYPE_CODE_ERROR: 421 case TYPE_CODE_MEMBER: 422 case TYPE_CODE_METHOD: 423 case TYPE_CODE_REF: 424 warning ("internal error: unhandled type in ada_print_scalar"); 425 break; 426 427 default: 428 error ("Invalid type code in symbol table."); 429 } 430 gdb_flush (stream); 431 } 432 433 /* Print the character string STRING, printing at most LENGTH characters. 434 Printing stops early if the number hits print_max; repeat counts 435 are printed as appropriate. Print ellipses at the end if we 436 had to stop before printing LENGTH characters, or if 437 FORCE_ELLIPSES. TYPE_LEN is the length (1 or 2) of the character type. 438 */ 439 440 static void 441 printstr (struct ui_file *stream, char *string, unsigned int length, 442 int force_ellipses, int type_len) 443 { 444 unsigned int i; 445 unsigned int things_printed = 0; 446 int in_quotes = 0; 447 int need_comma = 0; 448 449 if (length == 0) 450 { 451 fputs_filtered ("\"\"", stream); 452 return; 453 } 454 455 for (i = 0; i < length && things_printed < print_max; i += 1) 456 { 457 /* Position of the character we are examining 458 to see whether it is repeated. */ 459 unsigned int rep1; 460 /* Number of repetitions we have detected so far. */ 461 unsigned int reps; 462 463 QUIT; 464 465 if (need_comma) 466 { 467 fputs_filtered (", ", stream); 468 need_comma = 0; 469 } 470 471 rep1 = i + 1; 472 reps = 1; 473 while (rep1 < length 474 && char_at (string, rep1, type_len) == char_at (string, i, 475 type_len)) 476 { 477 rep1 += 1; 478 reps += 1; 479 } 480 481 if (reps > repeat_count_threshold) 482 { 483 if (in_quotes) 484 { 485 if (inspect_it) 486 fputs_filtered ("\\\", ", stream); 487 else 488 fputs_filtered ("\", ", stream); 489 in_quotes = 0; 490 } 491 fputs_filtered ("'", stream); 492 ada_emit_char (char_at (string, i, type_len), stream, '\'', 493 type_len); 494 fputs_filtered ("'", stream); 495 fprintf_filtered (stream, " <repeats %u times>", reps); 496 i = rep1 - 1; 497 things_printed += repeat_count_threshold; 498 need_comma = 1; 499 } 500 else 501 { 502 if (!in_quotes) 503 { 504 if (inspect_it) 505 fputs_filtered ("\\\"", stream); 506 else 507 fputs_filtered ("\"", stream); 508 in_quotes = 1; 509 } 510 ada_emit_char (char_at (string, i, type_len), stream, '"', 511 type_len); 512 things_printed += 1; 513 } 514 } 515 516 /* Terminate the quotes if necessary. */ 517 if (in_quotes) 518 { 519 if (inspect_it) 520 fputs_filtered ("\\\"", stream); 521 else 522 fputs_filtered ("\"", stream); 523 } 524 525 if (force_ellipses || i < length) 526 fputs_filtered ("...", stream); 527 } 528 529 void 530 ada_printstr (struct ui_file *stream, char *string, unsigned int length, 531 int width, int force_ellipses) 532 { 533 printstr (stream, string, length, force_ellipses, width); 534 } 535 536 537 /* Print data of type TYPE located at VALADDR (within GDB), which came from 538 the inferior at address ADDRESS, onto stdio stream STREAM according to 539 FORMAT (a letter as for the printf % codes or 0 for natural format). 540 The data at VALADDR is in target byte order. 541 542 If the data is printed as a string, returns the number of string characters 543 printed. 544 545 If DEREF_REF is nonzero, then dereference references, otherwise just print 546 them like pointers. 547 548 RECURSE indicates the amount of indentation to supply before 549 continuation lines; this amount is roughly twice the value of RECURSE. 550 551 When PRETTY is non-zero, prints record fields on separate lines. 552 (For some reason, the current version of gdb instead uses a global 553 variable---prettyprint_arrays--- to causes a similar effect on 554 arrays.) */ 555 556 int 557 ada_val_print (struct type *type, char *valaddr0, int embedded_offset, 558 CORE_ADDR address, struct ui_file *stream, int format, 559 int deref_ref, int recurse, enum val_prettyprint pretty) 560 { 561 struct ada_val_print_args args; 562 args.type = type; 563 args.valaddr0 = valaddr0; 564 args.embedded_offset = embedded_offset; 565 args.address = address; 566 args.stream = stream; 567 args.format = format; 568 args.deref_ref = deref_ref; 569 args.recurse = recurse; 570 args.pretty = pretty; 571 572 return catch_errors (ada_val_print_stub, &args, NULL, RETURN_MASK_ALL); 573 } 574 575 /* Helper for ada_val_print; used as argument to catch_errors to 576 unmarshal the arguments to ada_val_print_1, which does the work. */ 577 static int 578 ada_val_print_stub (void *args0) 579 { 580 struct ada_val_print_args *argsp = (struct ada_val_print_args *) args0; 581 return ada_val_print_1 (argsp->type, argsp->valaddr0, 582 argsp->embedded_offset, argsp->address, 583 argsp->stream, argsp->format, argsp->deref_ref, 584 argsp->recurse, argsp->pretty); 585 } 586 587 /* See the comment on ada_val_print. This function differs in that it 588 * does not catch evaluation errors (leaving that to ada_val_print). */ 589 590 static int 591 ada_val_print_1 (struct type *type, char *valaddr0, int embedded_offset, 592 CORE_ADDR address, struct ui_file *stream, int format, 593 int deref_ref, int recurse, enum val_prettyprint pretty) 594 { 595 unsigned int len; 596 int i; 597 struct type *elttype; 598 unsigned int eltlen; 599 LONGEST val; 600 char *valaddr = valaddr0 + embedded_offset; 601 602 type = ada_check_typedef (type); 603 604 if (ada_is_array_descriptor_type (type) || ada_is_packed_array_type (type)) 605 { 606 int retn; 607 struct value *mark = value_mark (); 608 struct value *val; 609 val = value_from_contents_and_address (type, valaddr, address); 610 val = ada_coerce_to_simple_array_ptr (val); 611 if (val == NULL) 612 { 613 fprintf_filtered (stream, "(null)"); 614 retn = 0; 615 } 616 else 617 retn = ada_val_print_1 (VALUE_TYPE (val), VALUE_CONTENTS (val), 0, 618 VALUE_ADDRESS (val), stream, format, 619 deref_ref, recurse, pretty); 620 value_free_to_mark (mark); 621 return retn; 622 } 623 624 valaddr = ada_aligned_value_addr (type, valaddr); 625 embedded_offset -= valaddr - valaddr0 - embedded_offset; 626 type = printable_val_type (type, valaddr); 627 628 switch (TYPE_CODE (type)) 629 { 630 default: 631 return c_val_print (type, valaddr0, embedded_offset, address, stream, 632 format, deref_ref, recurse, pretty); 633 634 case TYPE_CODE_PTR: 635 { 636 int ret = c_val_print (type, valaddr0, embedded_offset, address, 637 stream, format, deref_ref, recurse, pretty); 638 if (ada_is_tag_type (type)) 639 { 640 struct value *val = 641 value_from_contents_and_address (type, valaddr, address); 642 const char *name = ada_tag_name (val); 643 if (name != NULL) 644 fprintf_filtered (stream, " (%s)", name); 645 return 0; 646 } 647 return ret; 648 } 649 650 case TYPE_CODE_INT: 651 case TYPE_CODE_RANGE: 652 if (ada_is_fixed_point_type (type)) 653 { 654 LONGEST v = unpack_long (type, valaddr); 655 int len = TYPE_LENGTH (type); 656 657 fprintf_filtered (stream, len < 4 ? "%.11g" : "%.17g", 658 (double) ada_fixed_to_float (type, v)); 659 return 0; 660 } 661 else if (ada_is_vax_floating_type (type)) 662 { 663 struct value *val = 664 value_from_contents_and_address (type, valaddr, address); 665 struct value *func = ada_vax_float_print_function (type); 666 if (func != 0) 667 { 668 static struct type *parray_of_char = NULL; 669 struct value *printable_val; 670 671 if (parray_of_char == NULL) 672 parray_of_char = 673 make_pointer_type 674 (create_array_type 675 (NULL, builtin_type_char, 676 create_range_type (NULL, builtin_type_int, 0, 32)), NULL); 677 678 printable_val = 679 value_ind (value_cast (parray_of_char, 680 call_function_by_hand (func, 1, 681 &val))); 682 683 fprintf_filtered (stream, "%s", VALUE_CONTENTS (printable_val)); 684 return 0; 685 } 686 /* No special printing function. Do as best we can. */ 687 } 688 else if (TYPE_CODE (type) == TYPE_CODE_RANGE) 689 { 690 struct type *target_type = TYPE_TARGET_TYPE (type); 691 if (TYPE_LENGTH (type) != TYPE_LENGTH (target_type)) 692 { 693 /* Obscure case of range type that has different length from 694 its base type. Perform a conversion, or we will get a 695 nonsense value. Actually, we could use the same 696 code regardless of lengths; I'm just avoiding a cast. */ 697 struct value *v = value_cast (target_type, 698 value_from_contents_and_address 699 (type, valaddr, 0)); 700 return ada_val_print_1 (target_type, VALUE_CONTENTS (v), 0, 0, 701 stream, format, 0, recurse + 1, pretty); 702 } 703 else 704 return ada_val_print_1 (TYPE_TARGET_TYPE (type), 705 valaddr0, embedded_offset, 706 address, stream, format, deref_ref, 707 recurse, pretty); 708 } 709 else 710 { 711 format = format ? format : output_format; 712 if (format) 713 { 714 print_scalar_formatted (valaddr, type, format, 0, stream); 715 } 716 else if (ada_is_system_address_type (type)) 717 { 718 /* FIXME: We want to print System.Address variables using 719 the same format as for any access type. But for some 720 reason GNAT encodes the System.Address type as an int, 721 so we have to work-around this deficiency by handling 722 System.Address values as a special case. */ 723 fprintf_filtered (stream, "("); 724 type_print (type, "", stream, -1); 725 fprintf_filtered (stream, ") "); 726 print_address_numeric 727 (extract_typed_address (valaddr, builtin_type_void_data_ptr), 728 1, stream); 729 } 730 else 731 { 732 val_print_type_code_int (type, valaddr, stream); 733 if (ada_is_character_type (type)) 734 { 735 fputs_filtered (" ", stream); 736 ada_printchar ((unsigned char) unpack_long (type, valaddr), 737 stream); 738 } 739 } 740 return 0; 741 } 742 743 case TYPE_CODE_ENUM: 744 if (format) 745 { 746 print_scalar_formatted (valaddr, type, format, 0, stream); 747 break; 748 } 749 len = TYPE_NFIELDS (type); 750 val = unpack_long (type, valaddr); 751 for (i = 0; i < len; i++) 752 { 753 QUIT; 754 if (val == TYPE_FIELD_BITPOS (type, i)) 755 { 756 break; 757 } 758 } 759 if (i < len) 760 { 761 const char *name = ada_enum_name (TYPE_FIELD_NAME (type, i)); 762 if (name[0] == '\'') 763 fprintf_filtered (stream, "%ld %s", (long) val, name); 764 else 765 fputs_filtered (name, stream); 766 } 767 else 768 { 769 print_longest (stream, 'd', 0, val); 770 } 771 break; 772 773 case TYPE_CODE_FLT: 774 if (format) 775 return c_val_print (type, valaddr0, embedded_offset, address, stream, 776 format, deref_ref, recurse, pretty); 777 else 778 ada_print_floating (valaddr0 + embedded_offset, type, stream); 779 break; 780 781 case TYPE_CODE_UNION: 782 case TYPE_CODE_STRUCT: 783 if (ada_is_bogus_array_descriptor (type)) 784 { 785 fprintf_filtered (stream, "(...?)"); 786 return 0; 787 } 788 else 789 { 790 print_record (type, valaddr, stream, format, recurse, pretty); 791 return 0; 792 } 793 794 case TYPE_CODE_ARRAY: 795 elttype = TYPE_TARGET_TYPE (type); 796 if (elttype == NULL) 797 eltlen = 0; 798 else 799 eltlen = TYPE_LENGTH (elttype); 800 /* FIXME: This doesn't deal with non-empty arrays of 801 0-length items (not a typical case!) */ 802 if (eltlen == 0) 803 len = 0; 804 else 805 len = TYPE_LENGTH (type) / eltlen; 806 807 /* For an array of chars, print with string syntax. */ 808 if (ada_is_string_type (type) && (format == 0 || format == 's')) 809 { 810 if (prettyprint_arrays) 811 { 812 print_spaces_filtered (2 + 2 * recurse, stream); 813 } 814 /* If requested, look for the first null char and only print 815 elements up to it. */ 816 if (stop_print_at_null) 817 { 818 int temp_len; 819 820 /* Look for a NULL char. */ 821 for (temp_len = 0; 822 temp_len < len && temp_len < print_max 823 && char_at (valaddr, temp_len, eltlen) != 0; 824 temp_len += 1); 825 len = temp_len; 826 } 827 828 printstr (stream, valaddr, len, 0, eltlen); 829 } 830 else 831 { 832 len = 0; 833 fprintf_filtered (stream, "("); 834 print_optional_low_bound (stream, type); 835 if (TYPE_FIELD_BITSIZE (type, 0) > 0) 836 val_print_packed_array_elements (type, valaddr, 0, stream, 837 format, recurse, pretty); 838 else 839 val_print_array_elements (type, valaddr, address, stream, 840 format, deref_ref, recurse, 841 pretty, 0); 842 fprintf_filtered (stream, ")"); 843 } 844 gdb_flush (stream); 845 return len; 846 847 case TYPE_CODE_REF: 848 elttype = check_typedef (TYPE_TARGET_TYPE (type)); 849 /* De-reference the reference */ 850 if (deref_ref) 851 { 852 if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF) 853 { 854 LONGEST deref_val_int = (LONGEST) 855 unpack_pointer (lookup_pointer_type (builtin_type_void), 856 valaddr); 857 if (deref_val_int != 0) 858 { 859 struct value *deref_val = 860 ada_value_ind (value_from_longest 861 (lookup_pointer_type (elttype), 862 deref_val_int)); 863 val_print (VALUE_TYPE (deref_val), 864 VALUE_CONTENTS (deref_val), 0, 865 VALUE_ADDRESS (deref_val), stream, format, 866 deref_ref, recurse + 1, pretty); 867 } 868 else 869 fputs_filtered ("(null)", stream); 870 } 871 else 872 fputs_filtered ("???", stream); 873 } 874 break; 875 } 876 gdb_flush (stream); 877 return 0; 878 } 879 880 static int 881 print_variant_part (struct type *type, int field_num, char *valaddr, 882 struct ui_file *stream, int format, int recurse, 883 enum val_prettyprint pretty, int comma_needed, 884 struct type *outer_type, char *outer_valaddr) 885 { 886 struct type *var_type = TYPE_FIELD_TYPE (type, field_num); 887 int which = ada_which_variant_applies (var_type, outer_type, outer_valaddr); 888 889 if (which < 0) 890 return 0; 891 else 892 return print_field_values 893 (TYPE_FIELD_TYPE (var_type, which), 894 valaddr + TYPE_FIELD_BITPOS (type, field_num) / HOST_CHAR_BIT 895 + TYPE_FIELD_BITPOS (var_type, which) / HOST_CHAR_BIT, 896 stream, format, recurse, pretty, 897 comma_needed, outer_type, outer_valaddr); 898 } 899 900 int 901 ada_value_print (struct value *val0, struct ui_file *stream, int format, 902 enum val_prettyprint pretty) 903 { 904 char *valaddr = VALUE_CONTENTS (val0); 905 CORE_ADDR address = VALUE_ADDRESS (val0) + VALUE_OFFSET (val0); 906 struct type *type = 907 ada_to_fixed_type (VALUE_TYPE (val0), valaddr, address, NULL); 908 struct value *val = 909 value_from_contents_and_address (type, valaddr, address); 910 911 /* If it is a pointer, indicate what it points to. */ 912 if (TYPE_CODE (type) == TYPE_CODE_PTR) 913 { 914 /* Hack: don't print (char *) for char strings. Their 915 type is indicated by the quoted string anyway. */ 916 if (TYPE_LENGTH (TYPE_TARGET_TYPE (type)) != sizeof (char) 917 || TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_INT 918 || TYPE_UNSIGNED (TYPE_TARGET_TYPE (type))) 919 { 920 fprintf_filtered (stream, "("); 921 type_print (type, "", stream, -1); 922 fprintf_filtered (stream, ") "); 923 } 924 } 925 else if (ada_is_array_descriptor_type (type)) 926 { 927 fprintf_filtered (stream, "("); 928 type_print (type, "", stream, -1); 929 fprintf_filtered (stream, ") "); 930 } 931 else if (ada_is_bogus_array_descriptor (type)) 932 { 933 fprintf_filtered (stream, "("); 934 type_print (type, "", stream, -1); 935 fprintf_filtered (stream, ") (...?)"); 936 return 0; 937 } 938 939 if (TYPE_CODE (type) == TYPE_CODE_ARRAY 940 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) == 0 941 && TYPE_CODE (TYPE_INDEX_TYPE (type)) == TYPE_CODE_RANGE) 942 { 943 /* This is an array of zero-length elements, that is an array 944 of null records. This array needs to be printed by hand, 945 as the standard routine to print arrays relies on the size of 946 the array elements to be nonzero. This is because it computes 947 the number of elements in the array by dividing the array size 948 by the array element size. */ 949 fprintf_filtered (stream, "(%d .. %d => ())", 950 TYPE_LOW_BOUND (TYPE_INDEX_TYPE (type)), 951 TYPE_HIGH_BOUND (TYPE_INDEX_TYPE (type))); 952 return 0; 953 } 954 955 return (val_print (type, VALUE_CONTENTS (val), 0, address, 956 stream, format, 1, 0, pretty)); 957 } 958 959 static void 960 print_record (struct type *type, char *valaddr, struct ui_file *stream, 961 int format, int recurse, enum val_prettyprint pretty) 962 { 963 type = ada_check_typedef (type); 964 965 fprintf_filtered (stream, "("); 966 967 if (print_field_values (type, valaddr, stream, format, recurse, pretty, 968 0, type, valaddr) != 0 && pretty) 969 { 970 fprintf_filtered (stream, "\n"); 971 print_spaces_filtered (2 * recurse, stream); 972 } 973 974 fprintf_filtered (stream, ")"); 975 } 976 977 /* Print out fields of value at VALADDR having structure type TYPE. 978 979 TYPE, VALADDR, STREAM, FORMAT, RECURSE, and PRETTY have the 980 same meanings as in ada_print_value and ada_val_print. 981 982 OUTER_TYPE and OUTER_VALADDR give type and address of enclosing record 983 (used to get discriminant values when printing variant parts). 984 985 COMMA_NEEDED is 1 if fields have been printed at the current recursion 986 level, so that a comma is needed before any field printed by this 987 call. 988 989 Returns 1 if COMMA_NEEDED or any fields were printed. */ 990 991 static int 992 print_field_values (struct type *type, char *valaddr, struct ui_file *stream, 993 int format, int recurse, enum val_prettyprint pretty, 994 int comma_needed, struct type *outer_type, 995 char *outer_valaddr) 996 { 997 int i, len; 998 999 len = TYPE_NFIELDS (type); 1000 1001 for (i = 0; i < len; i += 1) 1002 { 1003 if (ada_is_ignored_field (type, i)) 1004 continue; 1005 1006 if (ada_is_wrapper_field (type, i)) 1007 { 1008 comma_needed = 1009 print_field_values (TYPE_FIELD_TYPE (type, i), 1010 valaddr 1011 + TYPE_FIELD_BITPOS (type, i) / HOST_CHAR_BIT, 1012 stream, format, recurse, pretty, 1013 comma_needed, type, valaddr); 1014 continue; 1015 } 1016 else if (ada_is_variant_part (type, i)) 1017 { 1018 comma_needed = 1019 print_variant_part (type, i, valaddr, 1020 stream, format, recurse, pretty, comma_needed, 1021 outer_type, outer_valaddr); 1022 continue; 1023 } 1024 1025 if (comma_needed) 1026 fprintf_filtered (stream, ", "); 1027 comma_needed = 1; 1028 1029 if (pretty) 1030 { 1031 fprintf_filtered (stream, "\n"); 1032 print_spaces_filtered (2 + 2 * recurse, stream); 1033 } 1034 else 1035 { 1036 wrap_here (n_spaces (2 + 2 * recurse)); 1037 } 1038 if (inspect_it) 1039 { 1040 if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR) 1041 fputs_filtered ("\"( ptr \"", stream); 1042 else 1043 fputs_filtered ("\"( nodef \"", stream); 1044 fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), 1045 language_cplus, DMGL_NO_OPTS); 1046 fputs_filtered ("\" \"", stream); 1047 fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), 1048 language_cplus, DMGL_NO_OPTS); 1049 fputs_filtered ("\") \"", stream); 1050 } 1051 else 1052 { 1053 annotate_field_begin (TYPE_FIELD_TYPE (type, i)); 1054 fprintf_filtered (stream, "%.*s", 1055 ada_name_prefix_len (TYPE_FIELD_NAME (type, i)), 1056 TYPE_FIELD_NAME (type, i)); 1057 annotate_field_name_end (); 1058 fputs_filtered (" => ", stream); 1059 annotate_field_value (); 1060 } 1061 1062 if (TYPE_FIELD_PACKED (type, i)) 1063 { 1064 struct value *v; 1065 1066 /* Bitfields require special handling, especially due to byte 1067 order problems. */ 1068 if (TYPE_CPLUS_SPECIFIC (type) != NULL 1069 && TYPE_FIELD_IGNORE (type, i)) 1070 { 1071 fputs_filtered ("<optimized out or zero length>", stream); 1072 } 1073 else 1074 { 1075 int bit_pos = TYPE_FIELD_BITPOS (type, i); 1076 int bit_size = TYPE_FIELD_BITSIZE (type, i); 1077 1078 adjust_type_signedness (TYPE_FIELD_TYPE (type, i)); 1079 v = ada_value_primitive_packed_val (NULL, valaddr, 1080 bit_pos / HOST_CHAR_BIT, 1081 bit_pos % HOST_CHAR_BIT, 1082 bit_size, 1083 TYPE_FIELD_TYPE (type, i)); 1084 val_print (TYPE_FIELD_TYPE (type, i), VALUE_CONTENTS (v), 0, 0, 1085 stream, format, 0, recurse + 1, pretty); 1086 } 1087 } 1088 else 1089 ada_val_print (TYPE_FIELD_TYPE (type, i), 1090 valaddr + TYPE_FIELD_BITPOS (type, i) / HOST_CHAR_BIT, 1091 0, 0, stream, format, 0, recurse + 1, pretty); 1092 annotate_field_end (); 1093 } 1094 1095 return comma_needed; 1096 } 1097