1 /* Print values for GDB, the GNU debugger. 2 3 Copyright (C) 1986, 1988-2012 Free Software Foundation, Inc. 4 5 This file is part of GDB. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20 #include "defs.h" 21 #include "gdb_string.h" 22 #include "symtab.h" 23 #include "gdbtypes.h" 24 #include "value.h" 25 #include "gdbcore.h" 26 #include "gdbcmd.h" 27 #include "target.h" 28 #include "language.h" 29 #include "annotate.h" 30 #include "valprint.h" 31 #include "floatformat.h" 32 #include "doublest.h" 33 #include "exceptions.h" 34 #include "dfp.h" 35 #include "python/python.h" 36 #include "ada-lang.h" 37 #include "gdb_obstack.h" 38 #include "charset.h" 39 #include <ctype.h> 40 41 #include <errno.h> 42 43 /* Prototypes for local functions */ 44 45 static int partial_memory_read (CORE_ADDR memaddr, gdb_byte *myaddr, 46 int len, int *errnoptr); 47 48 static void show_print (char *, int); 49 50 static void set_print (char *, int); 51 52 static void set_radix (char *, int); 53 54 static void show_radix (char *, int); 55 56 static void set_input_radix (char *, int, struct cmd_list_element *); 57 58 static void set_input_radix_1 (int, unsigned); 59 60 static void set_output_radix (char *, int, struct cmd_list_element *); 61 62 static void set_output_radix_1 (int, unsigned); 63 64 void _initialize_valprint (void); 65 66 #define PRINT_MAX_DEFAULT 200 /* Start print_max off at this value. */ 67 68 struct value_print_options user_print_options = 69 { 70 Val_pretty_default, /* pretty */ 71 0, /* prettyprint_arrays */ 72 0, /* prettyprint_structs */ 73 0, /* vtblprint */ 74 1, /* unionprint */ 75 1, /* addressprint */ 76 0, /* objectprint */ 77 PRINT_MAX_DEFAULT, /* print_max */ 78 10, /* repeat_count_threshold */ 79 0, /* output_format */ 80 0, /* format */ 81 0, /* stop_print_at_null */ 82 0, /* inspect_it */ 83 0, /* print_array_indexes */ 84 0, /* deref_ref */ 85 1, /* static_field_print */ 86 1, /* pascal_static_field_print */ 87 0, /* raw */ 88 0 /* summary */ 89 }; 90 91 /* Initialize *OPTS to be a copy of the user print options. */ 92 void 93 get_user_print_options (struct value_print_options *opts) 94 { 95 *opts = user_print_options; 96 } 97 98 /* Initialize *OPTS to be a copy of the user print options, but with 99 pretty-printing disabled. */ 100 void 101 get_raw_print_options (struct value_print_options *opts) 102 { 103 *opts = user_print_options; 104 opts->pretty = Val_no_prettyprint; 105 } 106 107 /* Initialize *OPTS to be a copy of the user print options, but using 108 FORMAT as the formatting option. */ 109 void 110 get_formatted_print_options (struct value_print_options *opts, 111 char format) 112 { 113 *opts = user_print_options; 114 opts->format = format; 115 } 116 117 static void 118 show_print_max (struct ui_file *file, int from_tty, 119 struct cmd_list_element *c, const char *value) 120 { 121 fprintf_filtered (file, 122 _("Limit on string chars or array " 123 "elements to print is %s.\n"), 124 value); 125 } 126 127 128 /* Default input and output radixes, and output format letter. */ 129 130 unsigned input_radix = 10; 131 static void 132 show_input_radix (struct ui_file *file, int from_tty, 133 struct cmd_list_element *c, const char *value) 134 { 135 fprintf_filtered (file, 136 _("Default input radix for entering numbers is %s.\n"), 137 value); 138 } 139 140 unsigned output_radix = 10; 141 static void 142 show_output_radix (struct ui_file *file, int from_tty, 143 struct cmd_list_element *c, const char *value) 144 { 145 fprintf_filtered (file, 146 _("Default output radix for printing of values is %s.\n"), 147 value); 148 } 149 150 /* By default we print arrays without printing the index of each element in 151 the array. This behavior can be changed by setting PRINT_ARRAY_INDEXES. */ 152 153 static void 154 show_print_array_indexes (struct ui_file *file, int from_tty, 155 struct cmd_list_element *c, const char *value) 156 { 157 fprintf_filtered (file, _("Printing of array indexes is %s.\n"), value); 158 } 159 160 /* Print repeat counts if there are more than this many repetitions of an 161 element in an array. Referenced by the low level language dependent 162 print routines. */ 163 164 static void 165 show_repeat_count_threshold (struct ui_file *file, int from_tty, 166 struct cmd_list_element *c, const char *value) 167 { 168 fprintf_filtered (file, _("Threshold for repeated print elements is %s.\n"), 169 value); 170 } 171 172 /* If nonzero, stops printing of char arrays at first null. */ 173 174 static void 175 show_stop_print_at_null (struct ui_file *file, int from_tty, 176 struct cmd_list_element *c, const char *value) 177 { 178 fprintf_filtered (file, 179 _("Printing of char arrays to stop " 180 "at first null char is %s.\n"), 181 value); 182 } 183 184 /* Controls pretty printing of structures. */ 185 186 static void 187 show_prettyprint_structs (struct ui_file *file, int from_tty, 188 struct cmd_list_element *c, const char *value) 189 { 190 fprintf_filtered (file, _("Prettyprinting of structures is %s.\n"), value); 191 } 192 193 /* Controls pretty printing of arrays. */ 194 195 static void 196 show_prettyprint_arrays (struct ui_file *file, int from_tty, 197 struct cmd_list_element *c, const char *value) 198 { 199 fprintf_filtered (file, _("Prettyprinting of arrays is %s.\n"), value); 200 } 201 202 /* If nonzero, causes unions inside structures or other unions to be 203 printed. */ 204 205 static void 206 show_unionprint (struct ui_file *file, int from_tty, 207 struct cmd_list_element *c, const char *value) 208 { 209 fprintf_filtered (file, 210 _("Printing of unions interior to structures is %s.\n"), 211 value); 212 } 213 214 /* If nonzero, causes machine addresses to be printed in certain contexts. */ 215 216 static void 217 show_addressprint (struct ui_file *file, int from_tty, 218 struct cmd_list_element *c, const char *value) 219 { 220 fprintf_filtered (file, _("Printing of addresses is %s.\n"), value); 221 } 222 223 224 /* A helper function for val_print. When printing in "summary" mode, 225 we want to print scalar arguments, but not aggregate arguments. 226 This function distinguishes between the two. */ 227 228 static int 229 scalar_type_p (struct type *type) 230 { 231 CHECK_TYPEDEF (type); 232 while (TYPE_CODE (type) == TYPE_CODE_REF) 233 { 234 type = TYPE_TARGET_TYPE (type); 235 CHECK_TYPEDEF (type); 236 } 237 switch (TYPE_CODE (type)) 238 { 239 case TYPE_CODE_ARRAY: 240 case TYPE_CODE_STRUCT: 241 case TYPE_CODE_UNION: 242 case TYPE_CODE_SET: 243 case TYPE_CODE_STRING: 244 case TYPE_CODE_BITSTRING: 245 return 0; 246 default: 247 return 1; 248 } 249 } 250 251 /* Helper function to check the validity of some bits of a value. 252 253 If TYPE represents some aggregate type (e.g., a structure), return 1. 254 255 Otherwise, any of the bytes starting at OFFSET and extending for 256 TYPE_LENGTH(TYPE) bytes are invalid, print a message to STREAM and 257 return 0. The checking is done using FUNCS. 258 259 Otherwise, return 1. */ 260 261 static int 262 valprint_check_validity (struct ui_file *stream, 263 struct type *type, 264 int embedded_offset, 265 const struct value *val) 266 { 267 CHECK_TYPEDEF (type); 268 269 if (TYPE_CODE (type) != TYPE_CODE_UNION 270 && TYPE_CODE (type) != TYPE_CODE_STRUCT 271 && TYPE_CODE (type) != TYPE_CODE_ARRAY) 272 { 273 if (!value_bits_valid (val, TARGET_CHAR_BIT * embedded_offset, 274 TARGET_CHAR_BIT * TYPE_LENGTH (type))) 275 { 276 val_print_optimized_out (stream); 277 return 0; 278 } 279 280 if (value_bits_synthetic_pointer (val, TARGET_CHAR_BIT * embedded_offset, 281 TARGET_CHAR_BIT * TYPE_LENGTH (type))) 282 { 283 fputs_filtered (_("<synthetic pointer>"), stream); 284 return 0; 285 } 286 287 if (!value_bytes_available (val, embedded_offset, TYPE_LENGTH (type))) 288 { 289 val_print_unavailable (stream); 290 return 0; 291 } 292 } 293 294 return 1; 295 } 296 297 void 298 val_print_optimized_out (struct ui_file *stream) 299 { 300 fprintf_filtered (stream, _("<optimized out>")); 301 } 302 303 void 304 val_print_unavailable (struct ui_file *stream) 305 { 306 fprintf_filtered (stream, _("<unavailable>")); 307 } 308 309 void 310 val_print_invalid_address (struct ui_file *stream) 311 { 312 fprintf_filtered (stream, _("<invalid address>")); 313 } 314 315 /* Print using the given LANGUAGE the data of type TYPE located at 316 VALADDR + EMBEDDED_OFFSET (within GDB), which came from the 317 inferior at address ADDRESS + EMBEDDED_OFFSET, onto stdio stream 318 STREAM according to OPTIONS. VAL is the whole object that came 319 from ADDRESS. VALADDR must point to the head of VAL's contents 320 buffer. 321 322 The language printers will pass down an adjusted EMBEDDED_OFFSET to 323 further helper subroutines as subfields of TYPE are printed. In 324 such cases, VALADDR is passed down unadjusted, as well as VAL, so 325 that VAL can be queried for metadata about the contents data being 326 printed, using EMBEDDED_OFFSET as an offset into VAL's contents 327 buffer. For example: "has this field been optimized out", or "I'm 328 printing an object while inspecting a traceframe; has this 329 particular piece of data been collected?". 330 331 RECURSE indicates the amount of indentation to supply before 332 continuation lines; this amount is roughly twice the value of 333 RECURSE. 334 335 If the data is printed as a string, returns the number of string 336 characters printed. */ 337 338 int 339 val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset, 340 CORE_ADDR address, struct ui_file *stream, int recurse, 341 const struct value *val, 342 const struct value_print_options *options, 343 const struct language_defn *language) 344 { 345 volatile struct gdb_exception except; 346 int ret = 0; 347 struct value_print_options local_opts = *options; 348 struct type *real_type = check_typedef (type); 349 350 if (local_opts.pretty == Val_pretty_default) 351 local_opts.pretty = (local_opts.prettyprint_structs 352 ? Val_prettyprint : Val_no_prettyprint); 353 354 QUIT; 355 356 /* Ensure that the type is complete and not just a stub. If the type is 357 only a stub and we can't find and substitute its complete type, then 358 print appropriate string and return. */ 359 360 if (TYPE_STUB (real_type)) 361 { 362 fprintf_filtered (stream, _("<incomplete type>")); 363 gdb_flush (stream); 364 return (0); 365 } 366 367 if (!valprint_check_validity (stream, real_type, embedded_offset, val)) 368 return 0; 369 370 if (!options->raw) 371 { 372 ret = apply_val_pretty_printer (type, valaddr, embedded_offset, 373 address, stream, recurse, 374 val, options, language); 375 if (ret) 376 return ret; 377 } 378 379 /* Handle summary mode. If the value is a scalar, print it; 380 otherwise, print an ellipsis. */ 381 if (options->summary && !scalar_type_p (type)) 382 { 383 fprintf_filtered (stream, "..."); 384 return 0; 385 } 386 387 TRY_CATCH (except, RETURN_MASK_ERROR) 388 { 389 ret = language->la_val_print (type, valaddr, embedded_offset, address, 390 stream, recurse, val, 391 &local_opts); 392 } 393 if (except.reason < 0) 394 fprintf_filtered (stream, _("<error reading variable>")); 395 396 return ret; 397 } 398 399 /* Check whether the value VAL is printable. Return 1 if it is; 400 return 0 and print an appropriate error message to STREAM according to 401 OPTIONS if it is not. */ 402 403 static int 404 value_check_printable (struct value *val, struct ui_file *stream, 405 const struct value_print_options *options) 406 { 407 if (val == 0) 408 { 409 fprintf_filtered (stream, _("<address of value unknown>")); 410 return 0; 411 } 412 413 if (value_entirely_optimized_out (val)) 414 { 415 if (options->summary && !scalar_type_p (value_type (val))) 416 fprintf_filtered (stream, "..."); 417 else 418 val_print_optimized_out (stream); 419 return 0; 420 } 421 422 if (TYPE_CODE (value_type (val)) == TYPE_CODE_INTERNAL_FUNCTION) 423 { 424 fprintf_filtered (stream, _("<internal function %s>"), 425 value_internal_function_name (val)); 426 return 0; 427 } 428 429 return 1; 430 } 431 432 /* Print using the given LANGUAGE the value VAL onto stream STREAM according 433 to OPTIONS. 434 435 If the data are a string pointer, returns the number of string characters 436 printed. 437 438 This is a preferable interface to val_print, above, because it uses 439 GDB's value mechanism. */ 440 441 int 442 common_val_print (struct value *val, struct ui_file *stream, int recurse, 443 const struct value_print_options *options, 444 const struct language_defn *language) 445 { 446 if (!value_check_printable (val, stream, options)) 447 return 0; 448 449 if (language->la_language == language_ada) 450 /* The value might have a dynamic type, which would cause trouble 451 below when trying to extract the value contents (since the value 452 size is determined from the type size which is unknown). So 453 get a fixed representation of our value. */ 454 val = ada_to_fixed_value (val); 455 456 return val_print (value_type (val), value_contents_for_printing (val), 457 value_embedded_offset (val), value_address (val), 458 stream, recurse, 459 val, options, language); 460 } 461 462 /* Print on stream STREAM the value VAL according to OPTIONS. The value 463 is printed using the current_language syntax. 464 465 If the object printed is a string pointer, return the number of string 466 bytes printed. */ 467 468 int 469 value_print (struct value *val, struct ui_file *stream, 470 const struct value_print_options *options) 471 { 472 if (!value_check_printable (val, stream, options)) 473 return 0; 474 475 if (!options->raw) 476 { 477 int r = apply_val_pretty_printer (value_type (val), 478 value_contents_for_printing (val), 479 value_embedded_offset (val), 480 value_address (val), 481 stream, 0, 482 val, options, current_language); 483 484 if (r) 485 return r; 486 } 487 488 return LA_VALUE_PRINT (val, stream, options); 489 } 490 491 /* Called by various <lang>_val_print routines to print 492 TYPE_CODE_INT's. TYPE is the type. VALADDR is the address of the 493 value. STREAM is where to print the value. */ 494 495 void 496 val_print_type_code_int (struct type *type, const gdb_byte *valaddr, 497 struct ui_file *stream) 498 { 499 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type)); 500 501 if (TYPE_LENGTH (type) > sizeof (LONGEST)) 502 { 503 LONGEST val; 504 505 if (TYPE_UNSIGNED (type) 506 && extract_long_unsigned_integer (valaddr, TYPE_LENGTH (type), 507 byte_order, &val)) 508 { 509 print_longest (stream, 'u', 0, val); 510 } 511 else 512 { 513 /* Signed, or we couldn't turn an unsigned value into a 514 LONGEST. For signed values, one could assume two's 515 complement (a reasonable assumption, I think) and do 516 better than this. */ 517 print_hex_chars (stream, (unsigned char *) valaddr, 518 TYPE_LENGTH (type), byte_order); 519 } 520 } 521 else 522 { 523 print_longest (stream, TYPE_UNSIGNED (type) ? 'u' : 'd', 0, 524 unpack_long (type, valaddr)); 525 } 526 } 527 528 void 529 val_print_type_code_flags (struct type *type, const gdb_byte *valaddr, 530 struct ui_file *stream) 531 { 532 ULONGEST val = unpack_long (type, valaddr); 533 int bitpos, nfields = TYPE_NFIELDS (type); 534 535 fputs_filtered ("[ ", stream); 536 for (bitpos = 0; bitpos < nfields; bitpos++) 537 { 538 if (TYPE_FIELD_BITPOS (type, bitpos) != -1 539 && (val & ((ULONGEST)1 << bitpos))) 540 { 541 if (TYPE_FIELD_NAME (type, bitpos)) 542 fprintf_filtered (stream, "%s ", TYPE_FIELD_NAME (type, bitpos)); 543 else 544 fprintf_filtered (stream, "#%d ", bitpos); 545 } 546 } 547 fputs_filtered ("]", stream); 548 549 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR, 550 according to OPTIONS and SIZE on STREAM. Format i is not supported 551 at this level. 552 553 This is how the elements of an array or structure are printed 554 with a format. */ 555 } 556 557 void 558 val_print_scalar_formatted (struct type *type, 559 const gdb_byte *valaddr, int embedded_offset, 560 const struct value *val, 561 const struct value_print_options *options, 562 int size, 563 struct ui_file *stream) 564 { 565 gdb_assert (val != NULL); 566 gdb_assert (valaddr == value_contents_for_printing_const (val)); 567 568 /* If we get here with a string format, try again without it. Go 569 all the way back to the language printers, which may call us 570 again. */ 571 if (options->format == 's') 572 { 573 struct value_print_options opts = *options; 574 opts.format = 0; 575 opts.deref_ref = 0; 576 val_print (type, valaddr, embedded_offset, 0, stream, 0, val, &opts, 577 current_language); 578 return; 579 } 580 581 /* A scalar object that does not have all bits available can't be 582 printed, because all bits contribute to its representation. */ 583 if (!value_bits_valid (val, TARGET_CHAR_BIT * embedded_offset, 584 TARGET_CHAR_BIT * TYPE_LENGTH (type))) 585 val_print_optimized_out (stream); 586 else if (!value_bytes_available (val, embedded_offset, TYPE_LENGTH (type))) 587 val_print_unavailable (stream); 588 else 589 print_scalar_formatted (valaddr + embedded_offset, type, 590 options, size, stream); 591 } 592 593 /* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g. 594 The raison d'etre of this function is to consolidate printing of 595 LONG_LONG's into this one function. The format chars b,h,w,g are 596 from print_scalar_formatted(). Numbers are printed using C 597 format. 598 599 USE_C_FORMAT means to use C format in all cases. Without it, 600 'o' and 'x' format do not include the standard C radix prefix 601 (leading 0 or 0x). 602 603 Hilfinger/2004-09-09: USE_C_FORMAT was originally called USE_LOCAL 604 and was intended to request formating according to the current 605 language and would be used for most integers that GDB prints. The 606 exceptional cases were things like protocols where the format of 607 the integer is a protocol thing, not a user-visible thing). The 608 parameter remains to preserve the information of what things might 609 be printed with language-specific format, should we ever resurrect 610 that capability. */ 611 612 void 613 print_longest (struct ui_file *stream, int format, int use_c_format, 614 LONGEST val_long) 615 { 616 const char *val; 617 618 switch (format) 619 { 620 case 'd': 621 val = int_string (val_long, 10, 1, 0, 1); break; 622 case 'u': 623 val = int_string (val_long, 10, 0, 0, 1); break; 624 case 'x': 625 val = int_string (val_long, 16, 0, 0, use_c_format); break; 626 case 'b': 627 val = int_string (val_long, 16, 0, 2, 1); break; 628 case 'h': 629 val = int_string (val_long, 16, 0, 4, 1); break; 630 case 'w': 631 val = int_string (val_long, 16, 0, 8, 1); break; 632 case 'g': 633 val = int_string (val_long, 16, 0, 16, 1); break; 634 break; 635 case 'o': 636 val = int_string (val_long, 8, 0, 0, use_c_format); break; 637 default: 638 internal_error (__FILE__, __LINE__, 639 _("failed internal consistency check")); 640 } 641 fputs_filtered (val, stream); 642 } 643 644 /* This used to be a macro, but I don't think it is called often enough 645 to merit such treatment. */ 646 /* Convert a LONGEST to an int. This is used in contexts (e.g. number of 647 arguments to a function, number in a value history, register number, etc.) 648 where the value must not be larger than can fit in an int. */ 649 650 int 651 longest_to_int (LONGEST arg) 652 { 653 /* Let the compiler do the work. */ 654 int rtnval = (int) arg; 655 656 /* Check for overflows or underflows. */ 657 if (sizeof (LONGEST) > sizeof (int)) 658 { 659 if (rtnval != arg) 660 { 661 error (_("Value out of range.")); 662 } 663 } 664 return (rtnval); 665 } 666 667 /* Print a floating point value of type TYPE (not always a 668 TYPE_CODE_FLT), pointed to in GDB by VALADDR, on STREAM. */ 669 670 void 671 print_floating (const gdb_byte *valaddr, struct type *type, 672 struct ui_file *stream) 673 { 674 DOUBLEST doub; 675 int inv; 676 const struct floatformat *fmt = NULL; 677 unsigned len = TYPE_LENGTH (type); 678 enum float_kind kind; 679 680 /* If it is a floating-point, check for obvious problems. */ 681 if (TYPE_CODE (type) == TYPE_CODE_FLT) 682 fmt = floatformat_from_type (type); 683 if (fmt != NULL) 684 { 685 kind = floatformat_classify (fmt, valaddr); 686 if (kind == float_nan) 687 { 688 if (floatformat_is_negative (fmt, valaddr)) 689 fprintf_filtered (stream, "-"); 690 fprintf_filtered (stream, "nan("); 691 fputs_filtered ("0x", stream); 692 fputs_filtered (floatformat_mantissa (fmt, valaddr), stream); 693 fprintf_filtered (stream, ")"); 694 return; 695 } 696 else if (kind == float_infinite) 697 { 698 if (floatformat_is_negative (fmt, valaddr)) 699 fputs_filtered ("-", stream); 700 fputs_filtered ("inf", stream); 701 return; 702 } 703 } 704 705 /* NOTE: cagney/2002-01-15: The TYPE passed into print_floating() 706 isn't necessarily a TYPE_CODE_FLT. Consequently, unpack_double 707 needs to be used as that takes care of any necessary type 708 conversions. Such conversions are of course direct to DOUBLEST 709 and disregard any possible target floating point limitations. 710 For instance, a u64 would be converted and displayed exactly on a 711 host with 80 bit DOUBLEST but with loss of information on a host 712 with 64 bit DOUBLEST. */ 713 714 doub = unpack_double (type, valaddr, &inv); 715 if (inv) 716 { 717 fprintf_filtered (stream, "<invalid float value>"); 718 return; 719 } 720 721 /* FIXME: kettenis/2001-01-20: The following code makes too much 722 assumptions about the host and target floating point format. */ 723 724 /* NOTE: cagney/2002-02-03: Since the TYPE of what was passed in may 725 not necessarily be a TYPE_CODE_FLT, the below ignores that and 726 instead uses the type's length to determine the precision of the 727 floating-point value being printed. */ 728 729 if (len < sizeof (double)) 730 fprintf_filtered (stream, "%.9g", (double) doub); 731 else if (len == sizeof (double)) 732 fprintf_filtered (stream, "%.17g", (double) doub); 733 else 734 #ifdef PRINTF_HAS_LONG_DOUBLE 735 fprintf_filtered (stream, "%.35Lg", doub); 736 #else 737 /* This at least wins with values that are representable as 738 doubles. */ 739 fprintf_filtered (stream, "%.17g", (double) doub); 740 #endif 741 } 742 743 void 744 print_decimal_floating (const gdb_byte *valaddr, struct type *type, 745 struct ui_file *stream) 746 { 747 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type)); 748 char decstr[MAX_DECIMAL_STRING]; 749 unsigned len = TYPE_LENGTH (type); 750 751 decimal_to_string (valaddr, len, byte_order, decstr); 752 fputs_filtered (decstr, stream); 753 return; 754 } 755 756 void 757 print_binary_chars (struct ui_file *stream, const gdb_byte *valaddr, 758 unsigned len, enum bfd_endian byte_order) 759 { 760 761 #define BITS_IN_BYTES 8 762 763 const gdb_byte *p; 764 unsigned int i; 765 int b; 766 767 /* Declared "int" so it will be signed. 768 This ensures that right shift will shift in zeros. */ 769 770 const int mask = 0x080; 771 772 /* FIXME: We should be not printing leading zeroes in most cases. */ 773 774 if (byte_order == BFD_ENDIAN_BIG) 775 { 776 for (p = valaddr; 777 p < valaddr + len; 778 p++) 779 { 780 /* Every byte has 8 binary characters; peel off 781 and print from the MSB end. */ 782 783 for (i = 0; i < (BITS_IN_BYTES * sizeof (*p)); i++) 784 { 785 if (*p & (mask >> i)) 786 b = 1; 787 else 788 b = 0; 789 790 fprintf_filtered (stream, "%1d", b); 791 } 792 } 793 } 794 else 795 { 796 for (p = valaddr + len - 1; 797 p >= valaddr; 798 p--) 799 { 800 for (i = 0; i < (BITS_IN_BYTES * sizeof (*p)); i++) 801 { 802 if (*p & (mask >> i)) 803 b = 1; 804 else 805 b = 0; 806 807 fprintf_filtered (stream, "%1d", b); 808 } 809 } 810 } 811 } 812 813 /* VALADDR points to an integer of LEN bytes. 814 Print it in octal on stream or format it in buf. */ 815 816 void 817 print_octal_chars (struct ui_file *stream, const gdb_byte *valaddr, 818 unsigned len, enum bfd_endian byte_order) 819 { 820 const gdb_byte *p; 821 unsigned char octa1, octa2, octa3, carry; 822 int cycle; 823 824 /* FIXME: We should be not printing leading zeroes in most cases. */ 825 826 827 /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track 828 * the extra bits, which cycle every three bytes: 829 * 830 * Byte side: 0 1 2 3 831 * | | | | 832 * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 | 833 * 834 * Octal side: 0 1 carry 3 4 carry ... 835 * 836 * Cycle number: 0 1 2 837 * 838 * But of course we are printing from the high side, so we have to 839 * figure out where in the cycle we are so that we end up with no 840 * left over bits at the end. 841 */ 842 #define BITS_IN_OCTAL 3 843 #define HIGH_ZERO 0340 844 #define LOW_ZERO 0016 845 #define CARRY_ZERO 0003 846 #define HIGH_ONE 0200 847 #define MID_ONE 0160 848 #define LOW_ONE 0016 849 #define CARRY_ONE 0001 850 #define HIGH_TWO 0300 851 #define MID_TWO 0070 852 #define LOW_TWO 0007 853 854 /* For 32 we start in cycle 2, with two bits and one bit carry; 855 for 64 in cycle in cycle 1, with one bit and a two bit carry. */ 856 857 cycle = (len * BITS_IN_BYTES) % BITS_IN_OCTAL; 858 carry = 0; 859 860 fputs_filtered ("0", stream); 861 if (byte_order == BFD_ENDIAN_BIG) 862 { 863 for (p = valaddr; 864 p < valaddr + len; 865 p++) 866 { 867 switch (cycle) 868 { 869 case 0: 870 /* No carry in, carry out two bits. */ 871 872 octa1 = (HIGH_ZERO & *p) >> 5; 873 octa2 = (LOW_ZERO & *p) >> 2; 874 carry = (CARRY_ZERO & *p); 875 fprintf_filtered (stream, "%o", octa1); 876 fprintf_filtered (stream, "%o", octa2); 877 break; 878 879 case 1: 880 /* Carry in two bits, carry out one bit. */ 881 882 octa1 = (carry << 1) | ((HIGH_ONE & *p) >> 7); 883 octa2 = (MID_ONE & *p) >> 4; 884 octa3 = (LOW_ONE & *p) >> 1; 885 carry = (CARRY_ONE & *p); 886 fprintf_filtered (stream, "%o", octa1); 887 fprintf_filtered (stream, "%o", octa2); 888 fprintf_filtered (stream, "%o", octa3); 889 break; 890 891 case 2: 892 /* Carry in one bit, no carry out. */ 893 894 octa1 = (carry << 2) | ((HIGH_TWO & *p) >> 6); 895 octa2 = (MID_TWO & *p) >> 3; 896 octa3 = (LOW_TWO & *p); 897 carry = 0; 898 fprintf_filtered (stream, "%o", octa1); 899 fprintf_filtered (stream, "%o", octa2); 900 fprintf_filtered (stream, "%o", octa3); 901 break; 902 903 default: 904 error (_("Internal error in octal conversion;")); 905 } 906 907 cycle++; 908 cycle = cycle % BITS_IN_OCTAL; 909 } 910 } 911 else 912 { 913 for (p = valaddr + len - 1; 914 p >= valaddr; 915 p--) 916 { 917 switch (cycle) 918 { 919 case 0: 920 /* Carry out, no carry in */ 921 922 octa1 = (HIGH_ZERO & *p) >> 5; 923 octa2 = (LOW_ZERO & *p) >> 2; 924 carry = (CARRY_ZERO & *p); 925 fprintf_filtered (stream, "%o", octa1); 926 fprintf_filtered (stream, "%o", octa2); 927 break; 928 929 case 1: 930 /* Carry in, carry out */ 931 932 octa1 = (carry << 1) | ((HIGH_ONE & *p) >> 7); 933 octa2 = (MID_ONE & *p) >> 4; 934 octa3 = (LOW_ONE & *p) >> 1; 935 carry = (CARRY_ONE & *p); 936 fprintf_filtered (stream, "%o", octa1); 937 fprintf_filtered (stream, "%o", octa2); 938 fprintf_filtered (stream, "%o", octa3); 939 break; 940 941 case 2: 942 /* Carry in, no carry out */ 943 944 octa1 = (carry << 2) | ((HIGH_TWO & *p) >> 6); 945 octa2 = (MID_TWO & *p) >> 3; 946 octa3 = (LOW_TWO & *p); 947 carry = 0; 948 fprintf_filtered (stream, "%o", octa1); 949 fprintf_filtered (stream, "%o", octa2); 950 fprintf_filtered (stream, "%o", octa3); 951 break; 952 953 default: 954 error (_("Internal error in octal conversion;")); 955 } 956 957 cycle++; 958 cycle = cycle % BITS_IN_OCTAL; 959 } 960 } 961 962 } 963 964 /* VALADDR points to an integer of LEN bytes. 965 Print it in decimal on stream or format it in buf. */ 966 967 void 968 print_decimal_chars (struct ui_file *stream, const gdb_byte *valaddr, 969 unsigned len, enum bfd_endian byte_order) 970 { 971 #define TEN 10 972 #define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */ 973 #define CARRY_LEFT( x ) ((x) % TEN) 974 #define SHIFT( x ) ((x) << 4) 975 #define LOW_NIBBLE( x ) ( (x) & 0x00F) 976 #define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4) 977 978 const gdb_byte *p; 979 unsigned char *digits; 980 int carry; 981 int decimal_len; 982 int i, j, decimal_digits; 983 int dummy; 984 int flip; 985 986 /* Base-ten number is less than twice as many digits 987 as the base 16 number, which is 2 digits per byte. */ 988 989 decimal_len = len * 2 * 2; 990 digits = xmalloc (decimal_len); 991 992 for (i = 0; i < decimal_len; i++) 993 { 994 digits[i] = 0; 995 } 996 997 /* Ok, we have an unknown number of bytes of data to be printed in 998 * decimal. 999 * 1000 * Given a hex number (in nibbles) as XYZ, we start by taking X and 1001 * decemalizing it as "x1 x2" in two decimal nibbles. Then we multiply 1002 * the nibbles by 16, add Y and re-decimalize. Repeat with Z. 1003 * 1004 * The trick is that "digits" holds a base-10 number, but sometimes 1005 * the individual digits are > 10. 1006 * 1007 * Outer loop is per nibble (hex digit) of input, from MSD end to 1008 * LSD end. 1009 */ 1010 decimal_digits = 0; /* Number of decimal digits so far */ 1011 p = (byte_order == BFD_ENDIAN_BIG) ? valaddr : valaddr + len - 1; 1012 flip = 0; 1013 while ((byte_order == BFD_ENDIAN_BIG) ? (p < valaddr + len) : (p >= valaddr)) 1014 { 1015 /* 1016 * Multiply current base-ten number by 16 in place. 1017 * Each digit was between 0 and 9, now is between 1018 * 0 and 144. 1019 */ 1020 for (j = 0; j < decimal_digits; j++) 1021 { 1022 digits[j] = SHIFT (digits[j]); 1023 } 1024 1025 /* Take the next nibble off the input and add it to what 1026 * we've got in the LSB position. Bottom 'digit' is now 1027 * between 0 and 159. 1028 * 1029 * "flip" is used to run this loop twice for each byte. 1030 */ 1031 if (flip == 0) 1032 { 1033 /* Take top nibble. */ 1034 1035 digits[0] += HIGH_NIBBLE (*p); 1036 flip = 1; 1037 } 1038 else 1039 { 1040 /* Take low nibble and bump our pointer "p". */ 1041 1042 digits[0] += LOW_NIBBLE (*p); 1043 if (byte_order == BFD_ENDIAN_BIG) 1044 p++; 1045 else 1046 p--; 1047 flip = 0; 1048 } 1049 1050 /* Re-decimalize. We have to do this often enough 1051 * that we don't overflow, but once per nibble is 1052 * overkill. Easier this way, though. Note that the 1053 * carry is often larger than 10 (e.g. max initial 1054 * carry out of lowest nibble is 15, could bubble all 1055 * the way up greater than 10). So we have to do 1056 * the carrying beyond the last current digit. 1057 */ 1058 carry = 0; 1059 for (j = 0; j < decimal_len - 1; j++) 1060 { 1061 digits[j] += carry; 1062 1063 /* "/" won't handle an unsigned char with 1064 * a value that if signed would be negative. 1065 * So extend to longword int via "dummy". 1066 */ 1067 dummy = digits[j]; 1068 carry = CARRY_OUT (dummy); 1069 digits[j] = CARRY_LEFT (dummy); 1070 1071 if (j >= decimal_digits && carry == 0) 1072 { 1073 /* 1074 * All higher digits are 0 and we 1075 * no longer have a carry. 1076 * 1077 * Note: "j" is 0-based, "decimal_digits" is 1078 * 1-based. 1079 */ 1080 decimal_digits = j + 1; 1081 break; 1082 } 1083 } 1084 } 1085 1086 /* Ok, now "digits" is the decimal representation, with 1087 the "decimal_digits" actual digits. Print! */ 1088 1089 for (i = decimal_digits - 1; i >= 0; i--) 1090 { 1091 fprintf_filtered (stream, "%1d", digits[i]); 1092 } 1093 xfree (digits); 1094 } 1095 1096 /* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */ 1097 1098 void 1099 print_hex_chars (struct ui_file *stream, const gdb_byte *valaddr, 1100 unsigned len, enum bfd_endian byte_order) 1101 { 1102 const gdb_byte *p; 1103 1104 /* FIXME: We should be not printing leading zeroes in most cases. */ 1105 1106 fputs_filtered ("0x", stream); 1107 if (byte_order == BFD_ENDIAN_BIG) 1108 { 1109 for (p = valaddr; 1110 p < valaddr + len; 1111 p++) 1112 { 1113 fprintf_filtered (stream, "%02x", *p); 1114 } 1115 } 1116 else 1117 { 1118 for (p = valaddr + len - 1; 1119 p >= valaddr; 1120 p--) 1121 { 1122 fprintf_filtered (stream, "%02x", *p); 1123 } 1124 } 1125 } 1126 1127 /* VALADDR points to a char integer of LEN bytes. 1128 Print it out in appropriate language form on stream. 1129 Omit any leading zero chars. */ 1130 1131 void 1132 print_char_chars (struct ui_file *stream, struct type *type, 1133 const gdb_byte *valaddr, 1134 unsigned len, enum bfd_endian byte_order) 1135 { 1136 const gdb_byte *p; 1137 1138 if (byte_order == BFD_ENDIAN_BIG) 1139 { 1140 p = valaddr; 1141 while (p < valaddr + len - 1 && *p == 0) 1142 ++p; 1143 1144 while (p < valaddr + len) 1145 { 1146 LA_EMIT_CHAR (*p, type, stream, '\''); 1147 ++p; 1148 } 1149 } 1150 else 1151 { 1152 p = valaddr + len - 1; 1153 while (p > valaddr && *p == 0) 1154 --p; 1155 1156 while (p >= valaddr) 1157 { 1158 LA_EMIT_CHAR (*p, type, stream, '\''); 1159 --p; 1160 } 1161 } 1162 } 1163 1164 /* Print on STREAM using the given OPTIONS the index for the element 1165 at INDEX of an array whose index type is INDEX_TYPE. */ 1166 1167 void 1168 maybe_print_array_index (struct type *index_type, LONGEST index, 1169 struct ui_file *stream, 1170 const struct value_print_options *options) 1171 { 1172 struct value *index_value; 1173 1174 if (!options->print_array_indexes) 1175 return; 1176 1177 index_value = value_from_longest (index_type, index); 1178 1179 LA_PRINT_ARRAY_INDEX (index_value, stream, options); 1180 } 1181 1182 /* Called by various <lang>_val_print routines to print elements of an 1183 array in the form "<elem1>, <elem2>, <elem3>, ...". 1184 1185 (FIXME?) Assumes array element separator is a comma, which is correct 1186 for all languages currently handled. 1187 (FIXME?) Some languages have a notation for repeated array elements, 1188 perhaps we should try to use that notation when appropriate. */ 1189 1190 void 1191 val_print_array_elements (struct type *type, 1192 const gdb_byte *valaddr, int embedded_offset, 1193 CORE_ADDR address, struct ui_file *stream, 1194 int recurse, 1195 const struct value *val, 1196 const struct value_print_options *options, 1197 unsigned int i) 1198 { 1199 unsigned int things_printed = 0; 1200 unsigned len; 1201 struct type *elttype, *index_type; 1202 unsigned eltlen; 1203 /* Position of the array element we are examining to see 1204 whether it is repeated. */ 1205 unsigned int rep1; 1206 /* Number of repetitions we have detected so far. */ 1207 unsigned int reps; 1208 LONGEST low_bound, high_bound; 1209 1210 elttype = TYPE_TARGET_TYPE (type); 1211 eltlen = TYPE_LENGTH (check_typedef (elttype)); 1212 index_type = TYPE_INDEX_TYPE (type); 1213 1214 if (get_array_bounds (type, &low_bound, &high_bound)) 1215 { 1216 /* The array length should normally be HIGH_BOUND - LOW_BOUND + 1. 1217 But we have to be a little extra careful, because some languages 1218 such as Ada allow LOW_BOUND to be greater than HIGH_BOUND for 1219 empty arrays. In that situation, the array length is just zero, 1220 not negative! */ 1221 if (low_bound > high_bound) 1222 len = 0; 1223 else 1224 len = high_bound - low_bound + 1; 1225 } 1226 else 1227 { 1228 warning (_("unable to get bounds of array, assuming null array")); 1229 low_bound = 0; 1230 len = 0; 1231 } 1232 1233 annotate_array_section_begin (i, elttype); 1234 1235 for (; i < len && things_printed < options->print_max; i++) 1236 { 1237 if (i != 0) 1238 { 1239 if (options->prettyprint_arrays) 1240 { 1241 fprintf_filtered (stream, ",\n"); 1242 print_spaces_filtered (2 + 2 * recurse, stream); 1243 } 1244 else 1245 { 1246 fprintf_filtered (stream, ", "); 1247 } 1248 } 1249 wrap_here (n_spaces (2 + 2 * recurse)); 1250 maybe_print_array_index (index_type, i + low_bound, 1251 stream, options); 1252 1253 rep1 = i + 1; 1254 reps = 1; 1255 /* Only check for reps if repeat_count_threshold is not set to 1256 UINT_MAX (unlimited). */ 1257 if (options->repeat_count_threshold < UINT_MAX) 1258 { 1259 while (rep1 < len 1260 && value_available_contents_eq (val, 1261 embedded_offset + i * eltlen, 1262 val, 1263 (embedded_offset 1264 + rep1 * eltlen), 1265 eltlen)) 1266 { 1267 ++reps; 1268 ++rep1; 1269 } 1270 } 1271 1272 if (reps > options->repeat_count_threshold) 1273 { 1274 val_print (elttype, valaddr, embedded_offset + i * eltlen, 1275 address, stream, recurse + 1, val, options, 1276 current_language); 1277 annotate_elt_rep (reps); 1278 fprintf_filtered (stream, " <repeats %u times>", reps); 1279 annotate_elt_rep_end (); 1280 1281 i = rep1 - 1; 1282 things_printed += options->repeat_count_threshold; 1283 } 1284 else 1285 { 1286 val_print (elttype, valaddr, embedded_offset + i * eltlen, 1287 address, 1288 stream, recurse + 1, val, options, current_language); 1289 annotate_elt (); 1290 things_printed++; 1291 } 1292 } 1293 annotate_array_section_end (); 1294 if (i < len) 1295 { 1296 fprintf_filtered (stream, "..."); 1297 } 1298 } 1299 1300 /* Read LEN bytes of target memory at address MEMADDR, placing the 1301 results in GDB's memory at MYADDR. Returns a count of the bytes 1302 actually read, and optionally an errno value in the location 1303 pointed to by ERRNOPTR if ERRNOPTR is non-null. */ 1304 1305 /* FIXME: cagney/1999-10-14: Only used by val_print_string. Can this 1306 function be eliminated. */ 1307 1308 static int 1309 partial_memory_read (CORE_ADDR memaddr, gdb_byte *myaddr, 1310 int len, int *errnoptr) 1311 { 1312 int nread; /* Number of bytes actually read. */ 1313 int errcode; /* Error from last read. */ 1314 1315 /* First try a complete read. */ 1316 errcode = target_read_memory (memaddr, myaddr, len); 1317 if (errcode == 0) 1318 { 1319 /* Got it all. */ 1320 nread = len; 1321 } 1322 else 1323 { 1324 /* Loop, reading one byte at a time until we get as much as we can. */ 1325 for (errcode = 0, nread = 0; len > 0 && errcode == 0; nread++, len--) 1326 { 1327 errcode = target_read_memory (memaddr++, myaddr++, 1); 1328 } 1329 /* If an error, the last read was unsuccessful, so adjust count. */ 1330 if (errcode != 0) 1331 { 1332 nread--; 1333 } 1334 } 1335 if (errnoptr != NULL) 1336 { 1337 *errnoptr = errcode; 1338 } 1339 return (nread); 1340 } 1341 1342 /* Read a string from the inferior, at ADDR, with LEN characters of WIDTH bytes 1343 each. Fetch at most FETCHLIMIT characters. BUFFER will be set to a newly 1344 allocated buffer containing the string, which the caller is responsible to 1345 free, and BYTES_READ will be set to the number of bytes read. Returns 0 on 1346 success, or errno on failure. 1347 1348 If LEN > 0, reads exactly LEN characters (including eventual NULs in 1349 the middle or end of the string). If LEN is -1, stops at the first 1350 null character (not necessarily the first null byte) up to a maximum 1351 of FETCHLIMIT characters. Set FETCHLIMIT to UINT_MAX to read as many 1352 characters as possible from the string. 1353 1354 Unless an exception is thrown, BUFFER will always be allocated, even on 1355 failure. In this case, some characters might have been read before the 1356 failure happened. Check BYTES_READ to recognize this situation. 1357 1358 Note: There was a FIXME asking to make this code use target_read_string, 1359 but this function is more general (can read past null characters, up to 1360 given LEN). Besides, it is used much more often than target_read_string 1361 so it is more tested. Perhaps callers of target_read_string should use 1362 this function instead? */ 1363 1364 int 1365 read_string (CORE_ADDR addr, int len, int width, unsigned int fetchlimit, 1366 enum bfd_endian byte_order, gdb_byte **buffer, int *bytes_read) 1367 { 1368 int found_nul; /* Non-zero if we found the nul char. */ 1369 int errcode; /* Errno returned from bad reads. */ 1370 unsigned int nfetch; /* Chars to fetch / chars fetched. */ 1371 unsigned int chunksize; /* Size of each fetch, in chars. */ 1372 gdb_byte *bufptr; /* Pointer to next available byte in 1373 buffer. */ 1374 gdb_byte *limit; /* First location past end of fetch buffer. */ 1375 struct cleanup *old_chain = NULL; /* Top of the old cleanup chain. */ 1376 1377 /* Decide how large of chunks to try to read in one operation. This 1378 is also pretty simple. If LEN >= zero, then we want fetchlimit chars, 1379 so we might as well read them all in one operation. If LEN is -1, we 1380 are looking for a NUL terminator to end the fetching, so we might as 1381 well read in blocks that are large enough to be efficient, but not so 1382 large as to be slow if fetchlimit happens to be large. So we choose the 1383 minimum of 8 and fetchlimit. We used to use 200 instead of 8 but 1384 200 is way too big for remote debugging over a serial line. */ 1385 1386 chunksize = (len == -1 ? min (8, fetchlimit) : fetchlimit); 1387 1388 /* Loop until we either have all the characters, or we encounter 1389 some error, such as bumping into the end of the address space. */ 1390 1391 found_nul = 0; 1392 *buffer = NULL; 1393 1394 old_chain = make_cleanup (free_current_contents, buffer); 1395 1396 if (len > 0) 1397 { 1398 *buffer = (gdb_byte *) xmalloc (len * width); 1399 bufptr = *buffer; 1400 1401 nfetch = partial_memory_read (addr, bufptr, len * width, &errcode) 1402 / width; 1403 addr += nfetch * width; 1404 bufptr += nfetch * width; 1405 } 1406 else if (len == -1) 1407 { 1408 unsigned long bufsize = 0; 1409 1410 do 1411 { 1412 QUIT; 1413 nfetch = min (chunksize, fetchlimit - bufsize); 1414 1415 if (*buffer == NULL) 1416 *buffer = (gdb_byte *) xmalloc (nfetch * width); 1417 else 1418 *buffer = (gdb_byte *) xrealloc (*buffer, 1419 (nfetch + bufsize) * width); 1420 1421 bufptr = *buffer + bufsize * width; 1422 bufsize += nfetch; 1423 1424 /* Read as much as we can. */ 1425 nfetch = partial_memory_read (addr, bufptr, nfetch * width, &errcode) 1426 / width; 1427 1428 /* Scan this chunk for the null character that terminates the string 1429 to print. If found, we don't need to fetch any more. Note 1430 that bufptr is explicitly left pointing at the next character 1431 after the null character, or at the next character after the end 1432 of the buffer. */ 1433 1434 limit = bufptr + nfetch * width; 1435 while (bufptr < limit) 1436 { 1437 unsigned long c; 1438 1439 c = extract_unsigned_integer (bufptr, width, byte_order); 1440 addr += width; 1441 bufptr += width; 1442 if (c == 0) 1443 { 1444 /* We don't care about any error which happened after 1445 the NUL terminator. */ 1446 errcode = 0; 1447 found_nul = 1; 1448 break; 1449 } 1450 } 1451 } 1452 while (errcode == 0 /* no error */ 1453 && bufptr - *buffer < fetchlimit * width /* no overrun */ 1454 && !found_nul); /* haven't found NUL yet */ 1455 } 1456 else 1457 { /* Length of string is really 0! */ 1458 /* We always allocate *buffer. */ 1459 *buffer = bufptr = xmalloc (1); 1460 errcode = 0; 1461 } 1462 1463 /* bufptr and addr now point immediately beyond the last byte which we 1464 consider part of the string (including a '\0' which ends the string). */ 1465 *bytes_read = bufptr - *buffer; 1466 1467 QUIT; 1468 1469 discard_cleanups (old_chain); 1470 1471 return errcode; 1472 } 1473 1474 /* Return true if print_wchar can display W without resorting to a 1475 numeric escape, false otherwise. */ 1476 1477 static int 1478 wchar_printable (gdb_wchar_t w) 1479 { 1480 return (gdb_iswprint (w) 1481 || w == LCST ('\a') || w == LCST ('\b') 1482 || w == LCST ('\f') || w == LCST ('\n') 1483 || w == LCST ('\r') || w == LCST ('\t') 1484 || w == LCST ('\v')); 1485 } 1486 1487 /* A helper function that converts the contents of STRING to wide 1488 characters and then appends them to OUTPUT. */ 1489 1490 static void 1491 append_string_as_wide (const char *string, 1492 struct obstack *output) 1493 { 1494 for (; *string; ++string) 1495 { 1496 gdb_wchar_t w = gdb_btowc (*string); 1497 obstack_grow (output, &w, sizeof (gdb_wchar_t)); 1498 } 1499 } 1500 1501 /* Print a wide character W to OUTPUT. ORIG is a pointer to the 1502 original (target) bytes representing the character, ORIG_LEN is the 1503 number of valid bytes. WIDTH is the number of bytes in a base 1504 characters of the type. OUTPUT is an obstack to which wide 1505 characters are emitted. QUOTER is a (narrow) character indicating 1506 the style of quotes surrounding the character to be printed. 1507 NEED_ESCAPE is an in/out flag which is used to track numeric 1508 escapes across calls. */ 1509 1510 static void 1511 print_wchar (gdb_wint_t w, const gdb_byte *orig, 1512 int orig_len, int width, 1513 enum bfd_endian byte_order, 1514 struct obstack *output, 1515 int quoter, int *need_escapep) 1516 { 1517 int need_escape = *need_escapep; 1518 1519 *need_escapep = 0; 1520 if (gdb_iswprint (w) && (!need_escape || (!gdb_iswdigit (w) 1521 && w != LCST ('8') 1522 && w != LCST ('9')))) 1523 { 1524 gdb_wchar_t wchar = w; 1525 1526 if (w == gdb_btowc (quoter) || w == LCST ('\\')) 1527 obstack_grow_wstr (output, LCST ("\\")); 1528 obstack_grow (output, &wchar, sizeof (gdb_wchar_t)); 1529 } 1530 else 1531 { 1532 switch (w) 1533 { 1534 case LCST ('\a'): 1535 obstack_grow_wstr (output, LCST ("\\a")); 1536 break; 1537 case LCST ('\b'): 1538 obstack_grow_wstr (output, LCST ("\\b")); 1539 break; 1540 case LCST ('\f'): 1541 obstack_grow_wstr (output, LCST ("\\f")); 1542 break; 1543 case LCST ('\n'): 1544 obstack_grow_wstr (output, LCST ("\\n")); 1545 break; 1546 case LCST ('\r'): 1547 obstack_grow_wstr (output, LCST ("\\r")); 1548 break; 1549 case LCST ('\t'): 1550 obstack_grow_wstr (output, LCST ("\\t")); 1551 break; 1552 case LCST ('\v'): 1553 obstack_grow_wstr (output, LCST ("\\v")); 1554 break; 1555 default: 1556 { 1557 int i; 1558 1559 for (i = 0; i + width <= orig_len; i += width) 1560 { 1561 char octal[30]; 1562 ULONGEST value; 1563 1564 value = extract_unsigned_integer (&orig[i], width, 1565 byte_order); 1566 /* If the value fits in 3 octal digits, print it that 1567 way. Otherwise, print it as a hex escape. */ 1568 if (value <= 0777) 1569 sprintf (octal, "\\%.3o", (int) (value & 0777)); 1570 else 1571 sprintf (octal, "\\x%lx", (long) value); 1572 append_string_as_wide (octal, output); 1573 } 1574 /* If we somehow have extra bytes, print them now. */ 1575 while (i < orig_len) 1576 { 1577 char octal[5]; 1578 1579 sprintf (octal, "\\%.3o", orig[i] & 0xff); 1580 append_string_as_wide (octal, output); 1581 ++i; 1582 } 1583 1584 *need_escapep = 1; 1585 } 1586 break; 1587 } 1588 } 1589 } 1590 1591 /* Print the character C on STREAM as part of the contents of a 1592 literal string whose delimiter is QUOTER. ENCODING names the 1593 encoding of C. */ 1594 1595 void 1596 generic_emit_char (int c, struct type *type, struct ui_file *stream, 1597 int quoter, const char *encoding) 1598 { 1599 enum bfd_endian byte_order 1600 = gdbarch_byte_order (get_type_arch (type)); 1601 struct obstack wchar_buf, output; 1602 struct cleanup *cleanups; 1603 gdb_byte *buf; 1604 struct wchar_iterator *iter; 1605 int need_escape = 0; 1606 1607 buf = alloca (TYPE_LENGTH (type)); 1608 pack_long (buf, type, c); 1609 1610 iter = make_wchar_iterator (buf, TYPE_LENGTH (type), 1611 encoding, TYPE_LENGTH (type)); 1612 cleanups = make_cleanup_wchar_iterator (iter); 1613 1614 /* This holds the printable form of the wchar_t data. */ 1615 obstack_init (&wchar_buf); 1616 make_cleanup_obstack_free (&wchar_buf); 1617 1618 while (1) 1619 { 1620 int num_chars; 1621 gdb_wchar_t *chars; 1622 const gdb_byte *buf; 1623 size_t buflen; 1624 int print_escape = 1; 1625 enum wchar_iterate_result result; 1626 1627 num_chars = wchar_iterate (iter, &result, &chars, &buf, &buflen); 1628 if (num_chars < 0) 1629 break; 1630 if (num_chars > 0) 1631 { 1632 /* If all characters are printable, print them. Otherwise, 1633 we're going to have to print an escape sequence. We 1634 check all characters because we want to print the target 1635 bytes in the escape sequence, and we don't know character 1636 boundaries there. */ 1637 int i; 1638 1639 print_escape = 0; 1640 for (i = 0; i < num_chars; ++i) 1641 if (!wchar_printable (chars[i])) 1642 { 1643 print_escape = 1; 1644 break; 1645 } 1646 1647 if (!print_escape) 1648 { 1649 for (i = 0; i < num_chars; ++i) 1650 print_wchar (chars[i], buf, buflen, 1651 TYPE_LENGTH (type), byte_order, 1652 &wchar_buf, quoter, &need_escape); 1653 } 1654 } 1655 1656 /* This handles the NUM_CHARS == 0 case as well. */ 1657 if (print_escape) 1658 print_wchar (gdb_WEOF, buf, buflen, TYPE_LENGTH (type), 1659 byte_order, &wchar_buf, quoter, &need_escape); 1660 } 1661 1662 /* The output in the host encoding. */ 1663 obstack_init (&output); 1664 make_cleanup_obstack_free (&output); 1665 1666 convert_between_encodings (INTERMEDIATE_ENCODING, host_charset (), 1667 obstack_base (&wchar_buf), 1668 obstack_object_size (&wchar_buf), 1669 1, &output, translit_char); 1670 obstack_1grow (&output, '\0'); 1671 1672 fputs_filtered (obstack_base (&output), stream); 1673 1674 do_cleanups (cleanups); 1675 } 1676 1677 /* Print the character string STRING, printing at most LENGTH 1678 characters. LENGTH is -1 if the string is nul terminated. TYPE is 1679 the type of each character. OPTIONS holds the printing options; 1680 printing stops early if the number hits print_max; repeat counts 1681 are printed as appropriate. Print ellipses at the end if we had to 1682 stop before printing LENGTH characters, or if FORCE_ELLIPSES. 1683 QUOTE_CHAR is the character to print at each end of the string. If 1684 C_STYLE_TERMINATOR is true, and the last character is 0, then it is 1685 omitted. */ 1686 1687 void 1688 generic_printstr (struct ui_file *stream, struct type *type, 1689 const gdb_byte *string, unsigned int length, 1690 const char *encoding, int force_ellipses, 1691 int quote_char, int c_style_terminator, 1692 const struct value_print_options *options) 1693 { 1694 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type)); 1695 unsigned int i; 1696 unsigned int things_printed = 0; 1697 int in_quotes = 0; 1698 int need_comma = 0; 1699 int width = TYPE_LENGTH (type); 1700 struct obstack wchar_buf, output; 1701 struct cleanup *cleanup; 1702 struct wchar_iterator *iter; 1703 int finished = 0; 1704 int need_escape = 0; 1705 gdb_wchar_t wide_quote_char = gdb_btowc (quote_char); 1706 1707 if (length == -1) 1708 { 1709 unsigned long current_char = 1; 1710 1711 for (i = 0; current_char; ++i) 1712 { 1713 QUIT; 1714 current_char = extract_unsigned_integer (string + i * width, 1715 width, byte_order); 1716 } 1717 length = i; 1718 } 1719 1720 /* If the string was not truncated due to `set print elements', and 1721 the last byte of it is a null, we don't print that, in 1722 traditional C style. */ 1723 if (c_style_terminator 1724 && !force_ellipses 1725 && length > 0 1726 && (extract_unsigned_integer (string + (length - 1) * width, 1727 width, byte_order) == 0)) 1728 length--; 1729 1730 if (length == 0) 1731 { 1732 fputs_filtered ("\"\"", stream); 1733 return; 1734 } 1735 1736 /* Arrange to iterate over the characters, in wchar_t form. */ 1737 iter = make_wchar_iterator (string, length * width, encoding, width); 1738 cleanup = make_cleanup_wchar_iterator (iter); 1739 1740 /* WCHAR_BUF is the obstack we use to represent the string in 1741 wchar_t form. */ 1742 obstack_init (&wchar_buf); 1743 make_cleanup_obstack_free (&wchar_buf); 1744 1745 while (!finished && things_printed < options->print_max) 1746 { 1747 int num_chars; 1748 enum wchar_iterate_result result; 1749 gdb_wchar_t *chars; 1750 const gdb_byte *buf; 1751 size_t buflen; 1752 1753 QUIT; 1754 1755 if (need_comma) 1756 { 1757 obstack_grow_wstr (&wchar_buf, LCST (", ")); 1758 need_comma = 0; 1759 } 1760 1761 num_chars = wchar_iterate (iter, &result, &chars, &buf, &buflen); 1762 /* We only look at repetitions when we were able to convert a 1763 single character in isolation. This makes the code simpler 1764 and probably does the sensible thing in the majority of 1765 cases. */ 1766 while (num_chars == 1 && things_printed < options->print_max) 1767 { 1768 /* Count the number of repetitions. */ 1769 unsigned int reps = 0; 1770 gdb_wchar_t current_char = chars[0]; 1771 const gdb_byte *orig_buf = buf; 1772 int orig_len = buflen; 1773 1774 if (need_comma) 1775 { 1776 obstack_grow_wstr (&wchar_buf, LCST (", ")); 1777 need_comma = 0; 1778 } 1779 1780 while (num_chars == 1 && current_char == chars[0]) 1781 { 1782 num_chars = wchar_iterate (iter, &result, &chars, 1783 &buf, &buflen); 1784 ++reps; 1785 } 1786 1787 /* Emit CURRENT_CHAR according to the repetition count and 1788 options. */ 1789 if (reps > options->repeat_count_threshold) 1790 { 1791 if (in_quotes) 1792 { 1793 if (options->inspect_it) 1794 obstack_grow_wstr (&wchar_buf, LCST ("\\")); 1795 obstack_grow (&wchar_buf, &wide_quote_char, 1796 sizeof (gdb_wchar_t)); 1797 obstack_grow_wstr (&wchar_buf, LCST (", ")); 1798 in_quotes = 0; 1799 } 1800 obstack_grow_wstr (&wchar_buf, LCST ("'")); 1801 need_escape = 0; 1802 print_wchar (current_char, orig_buf, orig_len, width, 1803 byte_order, &wchar_buf, '\'', &need_escape); 1804 obstack_grow_wstr (&wchar_buf, LCST ("'")); 1805 { 1806 /* Painful gyrations. */ 1807 int j; 1808 char *s = xstrprintf (_(" <repeats %u times>"), reps); 1809 1810 for (j = 0; s[j]; ++j) 1811 { 1812 gdb_wchar_t w = gdb_btowc (s[j]); 1813 obstack_grow (&wchar_buf, &w, sizeof (gdb_wchar_t)); 1814 } 1815 xfree (s); 1816 } 1817 things_printed += options->repeat_count_threshold; 1818 need_comma = 1; 1819 } 1820 else 1821 { 1822 /* Saw the character one or more times, but fewer than 1823 the repetition threshold. */ 1824 if (!in_quotes) 1825 { 1826 if (options->inspect_it) 1827 obstack_grow_wstr (&wchar_buf, LCST ("\\")); 1828 obstack_grow (&wchar_buf, &wide_quote_char, 1829 sizeof (gdb_wchar_t)); 1830 in_quotes = 1; 1831 need_escape = 0; 1832 } 1833 1834 while (reps-- > 0) 1835 { 1836 print_wchar (current_char, orig_buf, 1837 orig_len, width, 1838 byte_order, &wchar_buf, 1839 quote_char, &need_escape); 1840 ++things_printed; 1841 } 1842 } 1843 } 1844 1845 /* NUM_CHARS and the other outputs from wchar_iterate are valid 1846 here regardless of which branch was taken above. */ 1847 if (num_chars < 0) 1848 { 1849 /* Hit EOF. */ 1850 finished = 1; 1851 break; 1852 } 1853 1854 switch (result) 1855 { 1856 case wchar_iterate_invalid: 1857 if (!in_quotes) 1858 { 1859 if (options->inspect_it) 1860 obstack_grow_wstr (&wchar_buf, LCST ("\\")); 1861 obstack_grow (&wchar_buf, &wide_quote_char, 1862 sizeof (gdb_wchar_t)); 1863 in_quotes = 1; 1864 } 1865 need_escape = 0; 1866 print_wchar (gdb_WEOF, buf, buflen, width, byte_order, 1867 &wchar_buf, quote_char, &need_escape); 1868 break; 1869 1870 case wchar_iterate_incomplete: 1871 if (in_quotes) 1872 { 1873 if (options->inspect_it) 1874 obstack_grow_wstr (&wchar_buf, LCST ("\\")); 1875 obstack_grow (&wchar_buf, &wide_quote_char, 1876 sizeof (gdb_wchar_t)); 1877 obstack_grow_wstr (&wchar_buf, LCST (",")); 1878 in_quotes = 0; 1879 } 1880 obstack_grow_wstr (&wchar_buf, 1881 LCST (" <incomplete sequence ")); 1882 print_wchar (gdb_WEOF, buf, buflen, width, 1883 byte_order, &wchar_buf, 1884 0, &need_escape); 1885 obstack_grow_wstr (&wchar_buf, LCST (">")); 1886 finished = 1; 1887 break; 1888 } 1889 } 1890 1891 /* Terminate the quotes if necessary. */ 1892 if (in_quotes) 1893 { 1894 if (options->inspect_it) 1895 obstack_grow_wstr (&wchar_buf, LCST ("\\")); 1896 obstack_grow (&wchar_buf, &wide_quote_char, 1897 sizeof (gdb_wchar_t)); 1898 } 1899 1900 if (force_ellipses || !finished) 1901 obstack_grow_wstr (&wchar_buf, LCST ("...")); 1902 1903 /* OUTPUT is where we collect `char's for printing. */ 1904 obstack_init (&output); 1905 make_cleanup_obstack_free (&output); 1906 1907 convert_between_encodings (INTERMEDIATE_ENCODING, host_charset (), 1908 obstack_base (&wchar_buf), 1909 obstack_object_size (&wchar_buf), 1910 1, &output, translit_char); 1911 obstack_1grow (&output, '\0'); 1912 1913 fputs_filtered (obstack_base (&output), stream); 1914 1915 do_cleanups (cleanup); 1916 } 1917 1918 /* Print a string from the inferior, starting at ADDR and printing up to LEN 1919 characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing 1920 stops at the first null byte, otherwise printing proceeds (including null 1921 bytes) until either print_max or LEN characters have been printed, 1922 whichever is smaller. ENCODING is the name of the string's 1923 encoding. It can be NULL, in which case the target encoding is 1924 assumed. */ 1925 1926 int 1927 val_print_string (struct type *elttype, const char *encoding, 1928 CORE_ADDR addr, int len, 1929 struct ui_file *stream, 1930 const struct value_print_options *options) 1931 { 1932 int force_ellipsis = 0; /* Force ellipsis to be printed if nonzero. */ 1933 int errcode; /* Errno returned from bad reads. */ 1934 int found_nul; /* Non-zero if we found the nul char. */ 1935 unsigned int fetchlimit; /* Maximum number of chars to print. */ 1936 int bytes_read; 1937 gdb_byte *buffer = NULL; /* Dynamically growable fetch buffer. */ 1938 struct cleanup *old_chain = NULL; /* Top of the old cleanup chain. */ 1939 struct gdbarch *gdbarch = get_type_arch (elttype); 1940 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); 1941 int width = TYPE_LENGTH (elttype); 1942 1943 /* First we need to figure out the limit on the number of characters we are 1944 going to attempt to fetch and print. This is actually pretty simple. If 1945 LEN >= zero, then the limit is the minimum of LEN and print_max. If 1946 LEN is -1, then the limit is print_max. This is true regardless of 1947 whether print_max is zero, UINT_MAX (unlimited), or something in between, 1948 because finding the null byte (or available memory) is what actually 1949 limits the fetch. */ 1950 1951 fetchlimit = (len == -1 ? options->print_max : min (len, 1952 options->print_max)); 1953 1954 errcode = read_string (addr, len, width, fetchlimit, byte_order, 1955 &buffer, &bytes_read); 1956 old_chain = make_cleanup (xfree, buffer); 1957 1958 addr += bytes_read; 1959 1960 /* We now have either successfully filled the buffer to fetchlimit, 1961 or terminated early due to an error or finding a null char when 1962 LEN is -1. */ 1963 1964 /* Determine found_nul by looking at the last character read. */ 1965 found_nul = extract_unsigned_integer (buffer + bytes_read - width, width, 1966 byte_order) == 0; 1967 if (len == -1 && !found_nul) 1968 { 1969 gdb_byte *peekbuf; 1970 1971 /* We didn't find a NUL terminator we were looking for. Attempt 1972 to peek at the next character. If not successful, or it is not 1973 a null byte, then force ellipsis to be printed. */ 1974 1975 peekbuf = (gdb_byte *) alloca (width); 1976 1977 if (target_read_memory (addr, peekbuf, width) == 0 1978 && extract_unsigned_integer (peekbuf, width, byte_order) != 0) 1979 force_ellipsis = 1; 1980 } 1981 else if ((len >= 0 && errcode != 0) || (len > bytes_read / width)) 1982 { 1983 /* Getting an error when we have a requested length, or fetching less 1984 than the number of characters actually requested, always make us 1985 print ellipsis. */ 1986 force_ellipsis = 1; 1987 } 1988 1989 /* If we get an error before fetching anything, don't print a string. 1990 But if we fetch something and then get an error, print the string 1991 and then the error message. */ 1992 if (errcode == 0 || bytes_read > 0) 1993 { 1994 if (options->addressprint) 1995 { 1996 fputs_filtered (" ", stream); 1997 } 1998 LA_PRINT_STRING (stream, elttype, buffer, bytes_read / width, 1999 encoding, force_ellipsis, options); 2000 } 2001 2002 if (errcode != 0) 2003 { 2004 if (errcode == EIO) 2005 { 2006 fprintf_filtered (stream, " <Address "); 2007 fputs_filtered (paddress (gdbarch, addr), stream); 2008 fprintf_filtered (stream, " out of bounds>"); 2009 } 2010 else 2011 { 2012 fprintf_filtered (stream, " <Error reading address "); 2013 fputs_filtered (paddress (gdbarch, addr), stream); 2014 fprintf_filtered (stream, ": %s>", safe_strerror (errcode)); 2015 } 2016 } 2017 2018 gdb_flush (stream); 2019 do_cleanups (old_chain); 2020 2021 return (bytes_read / width); 2022 } 2023 2024 2025 /* The 'set input-radix' command writes to this auxiliary variable. 2026 If the requested radix is valid, INPUT_RADIX is updated; otherwise, 2027 it is left unchanged. */ 2028 2029 static unsigned input_radix_1 = 10; 2030 2031 /* Validate an input or output radix setting, and make sure the user 2032 knows what they really did here. Radix setting is confusing, e.g. 2033 setting the input radix to "10" never changes it! */ 2034 2035 static void 2036 set_input_radix (char *args, int from_tty, struct cmd_list_element *c) 2037 { 2038 set_input_radix_1 (from_tty, input_radix_1); 2039 } 2040 2041 static void 2042 set_input_radix_1 (int from_tty, unsigned radix) 2043 { 2044 /* We don't currently disallow any input radix except 0 or 1, which don't 2045 make any mathematical sense. In theory, we can deal with any input 2046 radix greater than 1, even if we don't have unique digits for every 2047 value from 0 to radix-1, but in practice we lose on large radix values. 2048 We should either fix the lossage or restrict the radix range more. 2049 (FIXME). */ 2050 2051 if (radix < 2) 2052 { 2053 input_radix_1 = input_radix; 2054 error (_("Nonsense input radix ``decimal %u''; input radix unchanged."), 2055 radix); 2056 } 2057 input_radix_1 = input_radix = radix; 2058 if (from_tty) 2059 { 2060 printf_filtered (_("Input radix now set to " 2061 "decimal %u, hex %x, octal %o.\n"), 2062 radix, radix, radix); 2063 } 2064 } 2065 2066 /* The 'set output-radix' command writes to this auxiliary variable. 2067 If the requested radix is valid, OUTPUT_RADIX is updated, 2068 otherwise, it is left unchanged. */ 2069 2070 static unsigned output_radix_1 = 10; 2071 2072 static void 2073 set_output_radix (char *args, int from_tty, struct cmd_list_element *c) 2074 { 2075 set_output_radix_1 (from_tty, output_radix_1); 2076 } 2077 2078 static void 2079 set_output_radix_1 (int from_tty, unsigned radix) 2080 { 2081 /* Validate the radix and disallow ones that we aren't prepared to 2082 handle correctly, leaving the radix unchanged. */ 2083 switch (radix) 2084 { 2085 case 16: 2086 user_print_options.output_format = 'x'; /* hex */ 2087 break; 2088 case 10: 2089 user_print_options.output_format = 0; /* decimal */ 2090 break; 2091 case 8: 2092 user_print_options.output_format = 'o'; /* octal */ 2093 break; 2094 default: 2095 output_radix_1 = output_radix; 2096 error (_("Unsupported output radix ``decimal %u''; " 2097 "output radix unchanged."), 2098 radix); 2099 } 2100 output_radix_1 = output_radix = radix; 2101 if (from_tty) 2102 { 2103 printf_filtered (_("Output radix now set to " 2104 "decimal %u, hex %x, octal %o.\n"), 2105 radix, radix, radix); 2106 } 2107 } 2108 2109 /* Set both the input and output radix at once. Try to set the output radix 2110 first, since it has the most restrictive range. An radix that is valid as 2111 an output radix is also valid as an input radix. 2112 2113 It may be useful to have an unusual input radix. If the user wishes to 2114 set an input radix that is not valid as an output radix, he needs to use 2115 the 'set input-radix' command. */ 2116 2117 static void 2118 set_radix (char *arg, int from_tty) 2119 { 2120 unsigned radix; 2121 2122 radix = (arg == NULL) ? 10 : parse_and_eval_long (arg); 2123 set_output_radix_1 (0, radix); 2124 set_input_radix_1 (0, radix); 2125 if (from_tty) 2126 { 2127 printf_filtered (_("Input and output radices now set to " 2128 "decimal %u, hex %x, octal %o.\n"), 2129 radix, radix, radix); 2130 } 2131 } 2132 2133 /* Show both the input and output radices. */ 2134 2135 static void 2136 show_radix (char *arg, int from_tty) 2137 { 2138 if (from_tty) 2139 { 2140 if (input_radix == output_radix) 2141 { 2142 printf_filtered (_("Input and output radices set to " 2143 "decimal %u, hex %x, octal %o.\n"), 2144 input_radix, input_radix, input_radix); 2145 } 2146 else 2147 { 2148 printf_filtered (_("Input radix set to decimal " 2149 "%u, hex %x, octal %o.\n"), 2150 input_radix, input_radix, input_radix); 2151 printf_filtered (_("Output radix set to decimal " 2152 "%u, hex %x, octal %o.\n"), 2153 output_radix, output_radix, output_radix); 2154 } 2155 } 2156 } 2157 2158 2159 static void 2160 set_print (char *arg, int from_tty) 2161 { 2162 printf_unfiltered ( 2163 "\"set print\" must be followed by the name of a print subcommand.\n"); 2164 help_list (setprintlist, "set print ", -1, gdb_stdout); 2165 } 2166 2167 static void 2168 show_print (char *args, int from_tty) 2169 { 2170 cmd_show_list (showprintlist, from_tty, ""); 2171 } 2172 2173 void 2174 _initialize_valprint (void) 2175 { 2176 add_prefix_cmd ("print", no_class, set_print, 2177 _("Generic command for setting how things print."), 2178 &setprintlist, "set print ", 0, &setlist); 2179 add_alias_cmd ("p", "print", no_class, 1, &setlist); 2180 /* Prefer set print to set prompt. */ 2181 add_alias_cmd ("pr", "print", no_class, 1, &setlist); 2182 2183 add_prefix_cmd ("print", no_class, show_print, 2184 _("Generic command for showing print settings."), 2185 &showprintlist, "show print ", 0, &showlist); 2186 add_alias_cmd ("p", "print", no_class, 1, &showlist); 2187 add_alias_cmd ("pr", "print", no_class, 1, &showlist); 2188 2189 add_setshow_uinteger_cmd ("elements", no_class, 2190 &user_print_options.print_max, _("\ 2191 Set limit on string chars or array elements to print."), _("\ 2192 Show limit on string chars or array elements to print."), _("\ 2193 \"set print elements 0\" causes there to be no limit."), 2194 NULL, 2195 show_print_max, 2196 &setprintlist, &showprintlist); 2197 2198 add_setshow_boolean_cmd ("null-stop", no_class, 2199 &user_print_options.stop_print_at_null, _("\ 2200 Set printing of char arrays to stop at first null char."), _("\ 2201 Show printing of char arrays to stop at first null char."), NULL, 2202 NULL, 2203 show_stop_print_at_null, 2204 &setprintlist, &showprintlist); 2205 2206 add_setshow_uinteger_cmd ("repeats", no_class, 2207 &user_print_options.repeat_count_threshold, _("\ 2208 Set threshold for repeated print elements."), _("\ 2209 Show threshold for repeated print elements."), _("\ 2210 \"set print repeats 0\" causes all elements to be individually printed."), 2211 NULL, 2212 show_repeat_count_threshold, 2213 &setprintlist, &showprintlist); 2214 2215 add_setshow_boolean_cmd ("pretty", class_support, 2216 &user_print_options.prettyprint_structs, _("\ 2217 Set prettyprinting of structures."), _("\ 2218 Show prettyprinting of structures."), NULL, 2219 NULL, 2220 show_prettyprint_structs, 2221 &setprintlist, &showprintlist); 2222 2223 add_setshow_boolean_cmd ("union", class_support, 2224 &user_print_options.unionprint, _("\ 2225 Set printing of unions interior to structures."), _("\ 2226 Show printing of unions interior to structures."), NULL, 2227 NULL, 2228 show_unionprint, 2229 &setprintlist, &showprintlist); 2230 2231 add_setshow_boolean_cmd ("array", class_support, 2232 &user_print_options.prettyprint_arrays, _("\ 2233 Set prettyprinting of arrays."), _("\ 2234 Show prettyprinting of arrays."), NULL, 2235 NULL, 2236 show_prettyprint_arrays, 2237 &setprintlist, &showprintlist); 2238 2239 add_setshow_boolean_cmd ("address", class_support, 2240 &user_print_options.addressprint, _("\ 2241 Set printing of addresses."), _("\ 2242 Show printing of addresses."), NULL, 2243 NULL, 2244 show_addressprint, 2245 &setprintlist, &showprintlist); 2246 2247 add_setshow_zuinteger_cmd ("input-radix", class_support, &input_radix_1, 2248 _("\ 2249 Set default input radix for entering numbers."), _("\ 2250 Show default input radix for entering numbers."), NULL, 2251 set_input_radix, 2252 show_input_radix, 2253 &setlist, &showlist); 2254 2255 add_setshow_zuinteger_cmd ("output-radix", class_support, &output_radix_1, 2256 _("\ 2257 Set default output radix for printing of values."), _("\ 2258 Show default output radix for printing of values."), NULL, 2259 set_output_radix, 2260 show_output_radix, 2261 &setlist, &showlist); 2262 2263 /* The "set radix" and "show radix" commands are special in that 2264 they are like normal set and show commands but allow two normally 2265 independent variables to be either set or shown with a single 2266 command. So the usual deprecated_add_set_cmd() and [deleted] 2267 add_show_from_set() commands aren't really appropriate. */ 2268 /* FIXME: i18n: With the new add_setshow_integer command, that is no 2269 longer true - show can display anything. */ 2270 add_cmd ("radix", class_support, set_radix, _("\ 2271 Set default input and output number radices.\n\ 2272 Use 'set input-radix' or 'set output-radix' to independently set each.\n\ 2273 Without an argument, sets both radices back to the default value of 10."), 2274 &setlist); 2275 add_cmd ("radix", class_support, show_radix, _("\ 2276 Show the default input and output number radices.\n\ 2277 Use 'show input-radix' or 'show output-radix' to independently show each."), 2278 &showlist); 2279 2280 add_setshow_boolean_cmd ("array-indexes", class_support, 2281 &user_print_options.print_array_indexes, _("\ 2282 Set printing of array indexes."), _("\ 2283 Show printing of array indexes"), NULL, NULL, show_print_array_indexes, 2284 &setprintlist, &showprintlist); 2285 } 2286