1 /* Print values for GDB, the GNU debugger.
3 Copyright (C) 1986-2015 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
30 #include "floatformat.h"
33 #include "extension.h"
35 #include "gdb_obstack.h"
39 /* Maximum number of wchars returned from wchar_iterate. */
42 /* A convenience macro to compute the size of a wchar_t buffer containing X
44 #define WCHAR_BUFLEN(X) ((X) * sizeof (gdb_wchar_t))
46 /* Character buffer size saved while iterating over wchars. */
47 #define WCHAR_BUFLEN_MAX WCHAR_BUFLEN (MAX_WCHARS)
49 /* A structure to encapsulate state information from iterated
50 character conversions. */
51 struct converted_character
53 /* The number of characters converted. */
56 /* The result of the conversion. See charset.h for more. */
57 enum wchar_iterate_result result;
59 /* The (saved) converted character(s). */
60 gdb_wchar_t chars[WCHAR_BUFLEN_MAX];
62 /* The first converted target byte. */
65 /* The number of bytes converted. */
68 /* How many times this character(s) is repeated. */
72 typedef struct converted_character converted_character_d;
73 DEF_VEC_O (converted_character_d);
75 /* Command lists for set/show print raw. */
76 struct cmd_list_element *setprintrawlist;
77 struct cmd_list_element *showprintrawlist;
79 /* Prototypes for local functions */
81 static int partial_memory_read (CORE_ADDR memaddr, gdb_byte *myaddr,
82 int len, int *errptr);
84 static void show_print (char *, int);
86 static void set_print (char *, int);
88 static void set_radix (char *, int);
90 static void show_radix (char *, int);
92 static void set_input_radix (char *, int, struct cmd_list_element *);
94 static void set_input_radix_1 (int, unsigned);
96 static void set_output_radix (char *, int, struct cmd_list_element *);
98 static void set_output_radix_1 (int, unsigned);
100 void _initialize_valprint (void);
102 #define PRINT_MAX_DEFAULT 200 /* Start print_max off at this value. */
104 struct value_print_options user_print_options =
106 Val_prettyformat_default, /* prettyformat */
107 0, /* prettyformat_arrays */
108 0, /* prettyformat_structs */
111 1, /* addressprint */
113 PRINT_MAX_DEFAULT, /* print_max */
114 10, /* repeat_count_threshold */
115 0, /* output_format */
117 0, /* stop_print_at_null */
118 0, /* print_array_indexes */
120 1, /* static_field_print */
121 1, /* pascal_static_field_print */
127 /* Initialize *OPTS to be a copy of the user print options. */
129 get_user_print_options (struct value_print_options *opts)
131 *opts = user_print_options;
134 /* Initialize *OPTS to be a copy of the user print options, but with
135 pretty-formatting disabled. */
137 get_no_prettyformat_print_options (struct value_print_options *opts)
139 *opts = user_print_options;
140 opts->prettyformat = Val_no_prettyformat;
143 /* Initialize *OPTS to be a copy of the user print options, but using
144 FORMAT as the formatting option. */
146 get_formatted_print_options (struct value_print_options *opts,
149 *opts = user_print_options;
150 opts->format = format;
154 show_print_max (struct ui_file *file, int from_tty,
155 struct cmd_list_element *c, const char *value)
157 fprintf_filtered (file,
158 _("Limit on string chars or array "
159 "elements to print is %s.\n"),
164 /* Default input and output radixes, and output format letter. */
166 unsigned input_radix = 10;
168 show_input_radix (struct ui_file *file, int from_tty,
169 struct cmd_list_element *c, const char *value)
171 fprintf_filtered (file,
172 _("Default input radix for entering numbers is %s.\n"),
176 unsigned output_radix = 10;
178 show_output_radix (struct ui_file *file, int from_tty,
179 struct cmd_list_element *c, const char *value)
181 fprintf_filtered (file,
182 _("Default output radix for printing of values is %s.\n"),
186 /* By default we print arrays without printing the index of each element in
187 the array. This behavior can be changed by setting PRINT_ARRAY_INDEXES. */
190 show_print_array_indexes (struct ui_file *file, int from_tty,
191 struct cmd_list_element *c, const char *value)
193 fprintf_filtered (file, _("Printing of array indexes is %s.\n"), value);
196 /* Print repeat counts if there are more than this many repetitions of an
197 element in an array. Referenced by the low level language dependent
201 show_repeat_count_threshold (struct ui_file *file, int from_tty,
202 struct cmd_list_element *c, const char *value)
204 fprintf_filtered (file, _("Threshold for repeated print elements is %s.\n"),
208 /* If nonzero, stops printing of char arrays at first null. */
211 show_stop_print_at_null (struct ui_file *file, int from_tty,
212 struct cmd_list_element *c, const char *value)
214 fprintf_filtered (file,
215 _("Printing of char arrays to stop "
216 "at first null char is %s.\n"),
220 /* Controls pretty printing of structures. */
223 show_prettyformat_structs (struct ui_file *file, int from_tty,
224 struct cmd_list_element *c, const char *value)
226 fprintf_filtered (file, _("Pretty formatting of structures is %s.\n"), value);
229 /* Controls pretty printing of arrays. */
232 show_prettyformat_arrays (struct ui_file *file, int from_tty,
233 struct cmd_list_element *c, const char *value)
235 fprintf_filtered (file, _("Pretty formatting of arrays is %s.\n"), value);
238 /* If nonzero, causes unions inside structures or other unions to be
242 show_unionprint (struct ui_file *file, int from_tty,
243 struct cmd_list_element *c, const char *value)
245 fprintf_filtered (file,
246 _("Printing of unions interior to structures is %s.\n"),
250 /* If nonzero, causes machine addresses to be printed in certain contexts. */
253 show_addressprint (struct ui_file *file, int from_tty,
254 struct cmd_list_element *c, const char *value)
256 fprintf_filtered (file, _("Printing of addresses is %s.\n"), value);
260 show_symbol_print (struct ui_file *file, int from_tty,
261 struct cmd_list_element *c, const char *value)
263 fprintf_filtered (file,
264 _("Printing of symbols when printing pointers is %s.\n"),
270 /* A helper function for val_print. When printing in "summary" mode,
271 we want to print scalar arguments, but not aggregate arguments.
272 This function distinguishes between the two. */
275 val_print_scalar_type_p (struct type *type)
277 type = check_typedef (type);
278 while (TYPE_CODE (type) == TYPE_CODE_REF)
280 type = TYPE_TARGET_TYPE (type);
281 type = check_typedef (type);
283 switch (TYPE_CODE (type))
285 case TYPE_CODE_ARRAY:
286 case TYPE_CODE_STRUCT:
287 case TYPE_CODE_UNION:
289 case TYPE_CODE_STRING:
296 /* See its definition in value.h. */
299 valprint_check_validity (struct ui_file *stream,
302 const struct value *val)
304 type = check_typedef (type);
306 if (TYPE_CODE (type) != TYPE_CODE_UNION
307 && TYPE_CODE (type) != TYPE_CODE_STRUCT
308 && TYPE_CODE (type) != TYPE_CODE_ARRAY)
310 if (value_bits_any_optimized_out (val,
311 TARGET_CHAR_BIT * embedded_offset,
312 TARGET_CHAR_BIT * TYPE_LENGTH (type)))
314 val_print_optimized_out (val, stream);
318 if (value_bits_synthetic_pointer (val, TARGET_CHAR_BIT * embedded_offset,
319 TARGET_CHAR_BIT * TYPE_LENGTH (type)))
321 fputs_filtered (_("<synthetic pointer>"), stream);
325 if (!value_bytes_available (val, embedded_offset, TYPE_LENGTH (type)))
327 val_print_unavailable (stream);
336 val_print_optimized_out (const struct value *val, struct ui_file *stream)
338 if (val != NULL && value_lval_const (val) == lval_register)
339 val_print_not_saved (stream);
341 fprintf_filtered (stream, _("<optimized out>"));
345 val_print_not_saved (struct ui_file *stream)
347 fprintf_filtered (stream, _("<not saved>"));
351 val_print_unavailable (struct ui_file *stream)
353 fprintf_filtered (stream, _("<unavailable>"));
357 val_print_invalid_address (struct ui_file *stream)
359 fprintf_filtered (stream, _("<invalid address>"));
362 /* Print a pointer based on the type of its target.
364 Arguments to this functions are roughly the same as those in
365 generic_val_print. A difference is that ADDRESS is the address to print,
366 with embedded_offset already added. ELTTYPE represents
367 the pointed type after check_typedef. */
370 print_unpacked_pointer (struct type *type, struct type *elttype,
371 CORE_ADDR address, struct ui_file *stream,
372 const struct value_print_options *options)
374 struct gdbarch *gdbarch = get_type_arch (type);
376 if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
378 /* Try to print what function it points to. */
379 print_function_pointer_address (options, gdbarch, address, stream);
383 if (options->symbol_print)
384 print_address_demangle (options, gdbarch, address, stream, demangle);
385 else if (options->addressprint)
386 fputs_filtered (paddress (gdbarch, address), stream);
389 /* generic_val_print helper for TYPE_CODE_ARRAY. */
392 generic_val_print_array (struct type *type, const gdb_byte *valaddr,
393 int embedded_offset, CORE_ADDR address,
394 struct ui_file *stream, int recurse,
395 const struct value *original_value,
396 const struct value_print_options *options)
398 struct type *unresolved_elttype = TYPE_TARGET_TYPE (type);
399 struct type *elttype = check_typedef (unresolved_elttype);
401 if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (unresolved_elttype) > 0)
403 LONGEST low_bound, high_bound;
405 if (!get_array_bounds (type, &low_bound, &high_bound))
406 error (_("Could not determine the array high bound"));
408 if (options->prettyformat_arrays)
410 print_spaces_filtered (2 + 2 * recurse, stream);
413 fprintf_filtered (stream, "{");
414 val_print_array_elements (type, valaddr, embedded_offset,
416 recurse, original_value, options, 0);
417 fprintf_filtered (stream, "}");
421 /* Array of unspecified length: treat like pointer to first elt. */
422 print_unpacked_pointer (type, elttype, address + embedded_offset, stream,
428 /* generic_val_print helper for TYPE_CODE_PTR. */
431 generic_val_print_ptr (struct type *type, const gdb_byte *valaddr,
432 int embedded_offset, struct ui_file *stream,
433 const struct value *original_value,
434 const struct value_print_options *options)
436 if (options->format && options->format != 's')
438 val_print_scalar_formatted (type, valaddr, embedded_offset,
439 original_value, options, 0, stream);
443 struct type *unresolved_elttype = TYPE_TARGET_TYPE(type);
444 struct type *elttype = check_typedef (unresolved_elttype);
445 CORE_ADDR addr = unpack_pointer (type, valaddr + embedded_offset);
447 print_unpacked_pointer (type, elttype, addr, stream, options);
452 /* generic_val_print helper for TYPE_CODE_MEMBERPTR. */
455 generic_val_print_memberptr (struct type *type, const gdb_byte *valaddr,
456 int embedded_offset, struct ui_file *stream,
457 const struct value *original_value,
458 const struct value_print_options *options)
460 val_print_scalar_formatted (type, valaddr, embedded_offset,
461 original_value, options, 0, stream);
464 /* generic_val_print helper for TYPE_CODE_REF. */
467 generic_val_print_ref (struct type *type, const gdb_byte *valaddr,
468 int embedded_offset, struct ui_file *stream, int recurse,
469 const struct value *original_value,
470 const struct value_print_options *options)
472 struct gdbarch *gdbarch = get_type_arch (type);
473 struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));
475 if (options->addressprint)
478 = extract_typed_address (valaddr + embedded_offset, type);
480 fprintf_filtered (stream, "@");
481 fputs_filtered (paddress (gdbarch, addr), stream);
482 if (options->deref_ref)
483 fputs_filtered (": ", stream);
485 /* De-reference the reference. */
486 if (options->deref_ref)
488 if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
490 struct value *deref_val;
492 deref_val = coerce_ref_if_computed (original_value);
493 if (deref_val != NULL)
495 /* More complicated computed references are not supported. */
496 gdb_assert (embedded_offset == 0);
499 deref_val = value_at (TYPE_TARGET_TYPE (type),
500 unpack_pointer (type,
502 + embedded_offset)));
504 common_val_print (deref_val, stream, recurse, options,
508 fputs_filtered ("???", stream);
512 /* generic_val_print helper for TYPE_CODE_ENUM. */
515 generic_val_print_enum (struct type *type, const gdb_byte *valaddr,
516 int embedded_offset, struct ui_file *stream,
517 const struct value *original_value,
518 const struct value_print_options *options)
526 val_print_scalar_formatted (type, valaddr, embedded_offset,
527 original_value, options, 0, stream);
530 len = TYPE_NFIELDS (type);
531 val = unpack_long (type, valaddr + embedded_offset);
532 for (i = 0; i < len; i++)
535 if (val == TYPE_FIELD_ENUMVAL (type, i))
542 fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
544 else if (TYPE_FLAG_ENUM (type))
548 /* We have a "flag" enum, so we try to decompose it into
549 pieces as appropriate. A flag enum has disjoint
550 constants by definition. */
551 fputs_filtered ("(", stream);
552 for (i = 0; i < len; ++i)
556 if ((val & TYPE_FIELD_ENUMVAL (type, i)) != 0)
559 fputs_filtered (" | ", stream);
562 val &= ~TYPE_FIELD_ENUMVAL (type, i);
563 fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
567 if (first || val != 0)
570 fputs_filtered (" | ", stream);
571 fputs_filtered ("unknown: ", stream);
572 print_longest (stream, 'd', 0, val);
575 fputs_filtered (")", stream);
578 print_longest (stream, 'd', 0, val);
581 /* generic_val_print helper for TYPE_CODE_FLAGS. */
584 generic_val_print_flags (struct type *type, const gdb_byte *valaddr,
585 int embedded_offset, struct ui_file *stream,
586 const struct value *original_value,
587 const struct value_print_options *options)
591 val_print_scalar_formatted (type, valaddr, embedded_offset, original_value,
594 val_print_type_code_flags (type, valaddr + embedded_offset, stream);
597 /* A generic val_print that is suitable for use by language
598 implementations of the la_val_print method. This function can
599 handle most type codes, though not all, notably exception
600 TYPE_CODE_UNION and TYPE_CODE_STRUCT, which must be implemented by
603 Most arguments are as to val_print.
605 The additional DECORATIONS argument can be used to customize the
606 output in some small, language-specific ways. */
609 generic_val_print (struct type *type, const gdb_byte *valaddr,
610 int embedded_offset, CORE_ADDR address,
611 struct ui_file *stream, int recurse,
612 const struct value *original_value,
613 const struct value_print_options *options,
614 const struct generic_val_print_decorations *decorations)
616 struct gdbarch *gdbarch = get_type_arch (type);
617 struct type *unresolved_type = type;
620 type = check_typedef (type);
621 switch (TYPE_CODE (type))
623 case TYPE_CODE_ARRAY:
624 generic_val_print_array (type, valaddr, embedded_offset, address, stream,
625 recurse, original_value, options);
628 case TYPE_CODE_MEMBERPTR:
629 generic_val_print_memberptr (type, valaddr, embedded_offset, stream,
630 original_value, options);
634 generic_val_print_ptr (type, valaddr, embedded_offset, stream,
635 original_value, options);
639 generic_val_print_ref (type, valaddr, embedded_offset, stream, recurse,
640 original_value, options);
644 generic_val_print_enum (type, valaddr, embedded_offset, stream,
645 original_value, options);
648 case TYPE_CODE_FLAGS:
649 generic_val_print_flags (type, valaddr, embedded_offset, stream,
650 original_value, options);
654 case TYPE_CODE_METHOD:
657 val_print_scalar_formatted (type, valaddr, embedded_offset,
658 original_value, options, 0, stream);
661 /* FIXME, we should consider, at least for ANSI C language,
662 eliminating the distinction made between FUNCs and POINTERs
664 fprintf_filtered (stream, "{");
665 type_print (type, "", stream, -1);
666 fprintf_filtered (stream, "} ");
667 /* Try to print what function it points to, and its address. */
668 print_address_demangle (options, gdbarch, address, stream, demangle);
672 if (options->format || options->output_format)
674 struct value_print_options opts = *options;
675 opts.format = (options->format ? options->format
676 : options->output_format);
677 val_print_scalar_formatted (type, valaddr, embedded_offset,
678 original_value, &opts, 0, stream);
682 val = unpack_long (type, valaddr + embedded_offset);
684 fputs_filtered (decorations->false_name, stream);
686 fputs_filtered (decorations->true_name, stream);
688 print_longest (stream, 'd', 0, val);
692 case TYPE_CODE_RANGE:
693 /* FIXME: create_static_range_type does not set the unsigned bit in a
694 range type (I think it probably should copy it from the
695 target type), so we won't print values which are too large to
696 fit in a signed integer correctly. */
697 /* FIXME: Doesn't handle ranges of enums correctly. (Can't just
698 print with the target type, though, because the size of our
699 type and the target type might differ). */
704 if (options->format || options->output_format)
706 struct value_print_options opts = *options;
708 opts.format = (options->format ? options->format
709 : options->output_format);
710 val_print_scalar_formatted (type, valaddr, embedded_offset,
711 original_value, &opts, 0, stream);
714 val_print_type_code_int (type, valaddr + embedded_offset, stream);
718 if (options->format || options->output_format)
720 struct value_print_options opts = *options;
722 opts.format = (options->format ? options->format
723 : options->output_format);
724 val_print_scalar_formatted (type, valaddr, embedded_offset,
725 original_value, &opts, 0, stream);
729 val = unpack_long (type, valaddr + embedded_offset);
730 if (TYPE_UNSIGNED (type))
731 fprintf_filtered (stream, "%u", (unsigned int) val);
733 fprintf_filtered (stream, "%d", (int) val);
734 fputs_filtered (" ", stream);
735 LA_PRINT_CHAR (val, unresolved_type, stream);
742 val_print_scalar_formatted (type, valaddr, embedded_offset,
743 original_value, options, 0, stream);
747 print_floating (valaddr + embedded_offset, type, stream);
751 case TYPE_CODE_DECFLOAT:
753 val_print_scalar_formatted (type, valaddr, embedded_offset,
754 original_value, options, 0, stream);
756 print_decimal_floating (valaddr + embedded_offset,
761 fputs_filtered (decorations->void_name, stream);
764 case TYPE_CODE_ERROR:
765 fprintf_filtered (stream, "%s", TYPE_ERROR_NAME (type));
768 case TYPE_CODE_UNDEF:
769 /* This happens (without TYPE_FLAG_STUB set) on systems which
770 don't use dbx xrefs (NO_DBX_XREFS in gcc) if a file has a
771 "struct foo *bar" and no complete type for struct foo in that
773 fprintf_filtered (stream, _("<incomplete type>"));
776 case TYPE_CODE_COMPLEX:
777 fprintf_filtered (stream, "%s", decorations->complex_prefix);
779 val_print_scalar_formatted (TYPE_TARGET_TYPE (type),
780 valaddr, embedded_offset,
781 original_value, options, 0, stream);
783 print_floating (valaddr + embedded_offset,
784 TYPE_TARGET_TYPE (type),
786 fprintf_filtered (stream, "%s", decorations->complex_infix);
788 val_print_scalar_formatted (TYPE_TARGET_TYPE (type),
791 + TYPE_LENGTH (TYPE_TARGET_TYPE (type)),
795 print_floating (valaddr + embedded_offset
796 + TYPE_LENGTH (TYPE_TARGET_TYPE (type)),
797 TYPE_TARGET_TYPE (type),
799 fprintf_filtered (stream, "%s", decorations->complex_suffix);
802 case TYPE_CODE_UNION:
803 case TYPE_CODE_STRUCT:
804 case TYPE_CODE_METHODPTR:
806 error (_("Unhandled type code %d in symbol table."),
812 /* Print using the given LANGUAGE the data of type TYPE located at
813 VALADDR + EMBEDDED_OFFSET (within GDB), which came from the
814 inferior at address ADDRESS + EMBEDDED_OFFSET, onto stdio stream
815 STREAM according to OPTIONS. VAL is the whole object that came
816 from ADDRESS. VALADDR must point to the head of VAL's contents
819 The language printers will pass down an adjusted EMBEDDED_OFFSET to
820 further helper subroutines as subfields of TYPE are printed. In
821 such cases, VALADDR is passed down unadjusted, as well as VAL, so
822 that VAL can be queried for metadata about the contents data being
823 printed, using EMBEDDED_OFFSET as an offset into VAL's contents
824 buffer. For example: "has this field been optimized out", or "I'm
825 printing an object while inspecting a traceframe; has this
826 particular piece of data been collected?".
828 RECURSE indicates the amount of indentation to supply before
829 continuation lines; this amount is roughly twice the value of
833 val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset,
834 CORE_ADDR address, struct ui_file *stream, int recurse,
835 const struct value *val,
836 const struct value_print_options *options,
837 const struct language_defn *language)
840 struct value_print_options local_opts = *options;
841 struct type *real_type = check_typedef (type);
843 if (local_opts.prettyformat == Val_prettyformat_default)
844 local_opts.prettyformat = (local_opts.prettyformat_structs
845 ? Val_prettyformat : Val_no_prettyformat);
849 /* Ensure that the type is complete and not just a stub. If the type is
850 only a stub and we can't find and substitute its complete type, then
851 print appropriate string and return. */
853 if (TYPE_STUB (real_type))
855 fprintf_filtered (stream, _("<incomplete type>"));
860 if (!valprint_check_validity (stream, real_type, embedded_offset, val))
865 ret = apply_ext_lang_val_pretty_printer (type, valaddr, embedded_offset,
866 address, stream, recurse,
867 val, options, language);
872 /* Handle summary mode. If the value is a scalar, print it;
873 otherwise, print an ellipsis. */
874 if (options->summary && !val_print_scalar_type_p (type))
876 fprintf_filtered (stream, "...");
882 language->la_val_print (type, valaddr, embedded_offset, address,
883 stream, recurse, val,
886 CATCH (except, RETURN_MASK_ERROR)
888 fprintf_filtered (stream, _("<error reading variable>"));
893 /* Check whether the value VAL is printable. Return 1 if it is;
894 return 0 and print an appropriate error message to STREAM according to
895 OPTIONS if it is not. */
898 value_check_printable (struct value *val, struct ui_file *stream,
899 const struct value_print_options *options)
903 fprintf_filtered (stream, _("<address of value unknown>"));
907 if (value_entirely_optimized_out (val))
909 if (options->summary && !val_print_scalar_type_p (value_type (val)))
910 fprintf_filtered (stream, "...");
912 val_print_optimized_out (val, stream);
916 if (value_entirely_unavailable (val))
918 if (options->summary && !val_print_scalar_type_p (value_type (val)))
919 fprintf_filtered (stream, "...");
921 val_print_unavailable (stream);
925 if (TYPE_CODE (value_type (val)) == TYPE_CODE_INTERNAL_FUNCTION)
927 fprintf_filtered (stream, _("<internal function %s>"),
928 value_internal_function_name (val));
935 /* Print using the given LANGUAGE the value VAL onto stream STREAM according
938 This is a preferable interface to val_print, above, because it uses
939 GDB's value mechanism. */
942 common_val_print (struct value *val, struct ui_file *stream, int recurse,
943 const struct value_print_options *options,
944 const struct language_defn *language)
946 if (!value_check_printable (val, stream, options))
949 if (language->la_language == language_ada)
950 /* The value might have a dynamic type, which would cause trouble
951 below when trying to extract the value contents (since the value
952 size is determined from the type size which is unknown). So
953 get a fixed representation of our value. */
954 val = ada_to_fixed_value (val);
956 val_print (value_type (val), value_contents_for_printing (val),
957 value_embedded_offset (val), value_address (val),
959 val, options, language);
962 /* Print on stream STREAM the value VAL according to OPTIONS. The value
963 is printed using the current_language syntax. */
966 value_print (struct value *val, struct ui_file *stream,
967 const struct value_print_options *options)
969 if (!value_check_printable (val, stream, options))
975 = apply_ext_lang_val_pretty_printer (value_type (val),
976 value_contents_for_printing (val),
977 value_embedded_offset (val),
980 val, options, current_language);
986 LA_VALUE_PRINT (val, stream, options);
989 /* Called by various <lang>_val_print routines to print
990 TYPE_CODE_INT's. TYPE is the type. VALADDR is the address of the
991 value. STREAM is where to print the value. */
994 val_print_type_code_int (struct type *type, const gdb_byte *valaddr,
995 struct ui_file *stream)
997 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
999 if (TYPE_LENGTH (type) > sizeof (LONGEST))
1003 if (TYPE_UNSIGNED (type)
1004 && extract_long_unsigned_integer (valaddr, TYPE_LENGTH (type),
1007 print_longest (stream, 'u', 0, val);
1011 /* Signed, or we couldn't turn an unsigned value into a
1012 LONGEST. For signed values, one could assume two's
1013 complement (a reasonable assumption, I think) and do
1014 better than this. */
1015 print_hex_chars (stream, (unsigned char *) valaddr,
1016 TYPE_LENGTH (type), byte_order);
1021 print_longest (stream, TYPE_UNSIGNED (type) ? 'u' : 'd', 0,
1022 unpack_long (type, valaddr));
1027 val_print_type_code_flags (struct type *type, const gdb_byte *valaddr,
1028 struct ui_file *stream)
1030 ULONGEST val = unpack_long (type, valaddr);
1031 int bitpos, nfields = TYPE_NFIELDS (type);
1033 fputs_filtered ("[ ", stream);
1034 for (bitpos = 0; bitpos < nfields; bitpos++)
1036 if (TYPE_FIELD_BITPOS (type, bitpos) != -1
1037 && (val & ((ULONGEST)1 << bitpos)))
1039 if (TYPE_FIELD_NAME (type, bitpos))
1040 fprintf_filtered (stream, "%s ", TYPE_FIELD_NAME (type, bitpos));
1042 fprintf_filtered (stream, "#%d ", bitpos);
1045 fputs_filtered ("]", stream);
1048 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
1049 according to OPTIONS and SIZE on STREAM. Format i is not supported
1052 This is how the elements of an array or structure are printed
1056 val_print_scalar_formatted (struct type *type,
1057 const gdb_byte *valaddr, int embedded_offset,
1058 const struct value *val,
1059 const struct value_print_options *options,
1061 struct ui_file *stream)
1063 gdb_assert (val != NULL);
1064 gdb_assert (valaddr == value_contents_for_printing_const (val));
1066 /* If we get here with a string format, try again without it. Go
1067 all the way back to the language printers, which may call us
1069 if (options->format == 's')
1071 struct value_print_options opts = *options;
1074 val_print (type, valaddr, embedded_offset, 0, stream, 0, val, &opts,
1079 /* A scalar object that does not have all bits available can't be
1080 printed, because all bits contribute to its representation. */
1081 if (value_bits_any_optimized_out (val,
1082 TARGET_CHAR_BIT * embedded_offset,
1083 TARGET_CHAR_BIT * TYPE_LENGTH (type)))
1084 val_print_optimized_out (val, stream);
1085 else if (!value_bytes_available (val, embedded_offset, TYPE_LENGTH (type)))
1086 val_print_unavailable (stream);
1088 print_scalar_formatted (valaddr + embedded_offset, type,
1089 options, size, stream);
1092 /* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g.
1093 The raison d'etre of this function is to consolidate printing of
1094 LONG_LONG's into this one function. The format chars b,h,w,g are
1095 from print_scalar_formatted(). Numbers are printed using C
1098 USE_C_FORMAT means to use C format in all cases. Without it,
1099 'o' and 'x' format do not include the standard C radix prefix
1102 Hilfinger/2004-09-09: USE_C_FORMAT was originally called USE_LOCAL
1103 and was intended to request formating according to the current
1104 language and would be used for most integers that GDB prints. The
1105 exceptional cases were things like protocols where the format of
1106 the integer is a protocol thing, not a user-visible thing). The
1107 parameter remains to preserve the information of what things might
1108 be printed with language-specific format, should we ever resurrect
1112 print_longest (struct ui_file *stream, int format, int use_c_format,
1120 val = int_string (val_long, 10, 1, 0, 1); break;
1122 val = int_string (val_long, 10, 0, 0, 1); break;
1124 val = int_string (val_long, 16, 0, 0, use_c_format); break;
1126 val = int_string (val_long, 16, 0, 2, 1); break;
1128 val = int_string (val_long, 16, 0, 4, 1); break;
1130 val = int_string (val_long, 16, 0, 8, 1); break;
1132 val = int_string (val_long, 16, 0, 16, 1); break;
1135 val = int_string (val_long, 8, 0, 0, use_c_format); break;
1137 internal_error (__FILE__, __LINE__,
1138 _("failed internal consistency check"));
1140 fputs_filtered (val, stream);
1143 /* This used to be a macro, but I don't think it is called often enough
1144 to merit such treatment. */
1145 /* Convert a LONGEST to an int. This is used in contexts (e.g. number of
1146 arguments to a function, number in a value history, register number, etc.)
1147 where the value must not be larger than can fit in an int. */
1150 longest_to_int (LONGEST arg)
1152 /* Let the compiler do the work. */
1153 int rtnval = (int) arg;
1155 /* Check for overflows or underflows. */
1156 if (sizeof (LONGEST) > sizeof (int))
1160 error (_("Value out of range."));
1166 /* Print a floating point value of type TYPE (not always a
1167 TYPE_CODE_FLT), pointed to in GDB by VALADDR, on STREAM. */
1170 print_floating (const gdb_byte *valaddr, struct type *type,
1171 struct ui_file *stream)
1175 const struct floatformat *fmt = NULL;
1176 unsigned len = TYPE_LENGTH (type);
1177 enum float_kind kind;
1179 /* If it is a floating-point, check for obvious problems. */
1180 if (TYPE_CODE (type) == TYPE_CODE_FLT)
1181 fmt = floatformat_from_type (type);
1184 kind = floatformat_classify (fmt, valaddr);
1185 if (kind == float_nan)
1187 if (floatformat_is_negative (fmt, valaddr))
1188 fprintf_filtered (stream, "-");
1189 fprintf_filtered (stream, "nan(");
1190 fputs_filtered ("0x", stream);
1191 fputs_filtered (floatformat_mantissa (fmt, valaddr), stream);
1192 fprintf_filtered (stream, ")");
1195 else if (kind == float_infinite)
1197 if (floatformat_is_negative (fmt, valaddr))
1198 fputs_filtered ("-", stream);
1199 fputs_filtered ("inf", stream);
1204 /* NOTE: cagney/2002-01-15: The TYPE passed into print_floating()
1205 isn't necessarily a TYPE_CODE_FLT. Consequently, unpack_double
1206 needs to be used as that takes care of any necessary type
1207 conversions. Such conversions are of course direct to DOUBLEST
1208 and disregard any possible target floating point limitations.
1209 For instance, a u64 would be converted and displayed exactly on a
1210 host with 80 bit DOUBLEST but with loss of information on a host
1211 with 64 bit DOUBLEST. */
1213 doub = unpack_double (type, valaddr, &inv);
1216 fprintf_filtered (stream, "<invalid float value>");
1220 /* FIXME: kettenis/2001-01-20: The following code makes too much
1221 assumptions about the host and target floating point format. */
1223 /* NOTE: cagney/2002-02-03: Since the TYPE of what was passed in may
1224 not necessarily be a TYPE_CODE_FLT, the below ignores that and
1225 instead uses the type's length to determine the precision of the
1226 floating-point value being printed. */
1228 if (len < sizeof (double))
1229 fprintf_filtered (stream, "%.9g", (double) doub);
1230 else if (len == sizeof (double))
1231 fprintf_filtered (stream, "%.17g", (double) doub);
1233 #ifdef PRINTF_HAS_LONG_DOUBLE
1234 fprintf_filtered (stream, "%.35Lg", doub);
1236 /* This at least wins with values that are representable as
1238 fprintf_filtered (stream, "%.17g", (double) doub);
1243 print_decimal_floating (const gdb_byte *valaddr, struct type *type,
1244 struct ui_file *stream)
1246 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
1247 char decstr[MAX_DECIMAL_STRING];
1248 unsigned len = TYPE_LENGTH (type);
1250 decimal_to_string (valaddr, len, byte_order, decstr);
1251 fputs_filtered (decstr, stream);
1256 print_binary_chars (struct ui_file *stream, const gdb_byte *valaddr,
1257 unsigned len, enum bfd_endian byte_order)
1260 #define BITS_IN_BYTES 8
1266 /* Declared "int" so it will be signed.
1267 This ensures that right shift will shift in zeros. */
1269 const int mask = 0x080;
1271 /* FIXME: We should be not printing leading zeroes in most cases. */
1273 if (byte_order == BFD_ENDIAN_BIG)
1279 /* Every byte has 8 binary characters; peel off
1280 and print from the MSB end. */
1282 for (i = 0; i < (BITS_IN_BYTES * sizeof (*p)); i++)
1284 if (*p & (mask >> i))
1289 fprintf_filtered (stream, "%1d", b);
1295 for (p = valaddr + len - 1;
1299 for (i = 0; i < (BITS_IN_BYTES * sizeof (*p)); i++)
1301 if (*p & (mask >> i))
1306 fprintf_filtered (stream, "%1d", b);
1312 /* VALADDR points to an integer of LEN bytes.
1313 Print it in octal on stream or format it in buf. */
1316 print_octal_chars (struct ui_file *stream, const gdb_byte *valaddr,
1317 unsigned len, enum bfd_endian byte_order)
1320 unsigned char octa1, octa2, octa3, carry;
1323 /* FIXME: We should be not printing leading zeroes in most cases. */
1326 /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track
1327 * the extra bits, which cycle every three bytes:
1329 * Byte side: 0 1 2 3
1331 * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 |
1333 * Octal side: 0 1 carry 3 4 carry ...
1335 * Cycle number: 0 1 2
1337 * But of course we are printing from the high side, so we have to
1338 * figure out where in the cycle we are so that we end up with no
1339 * left over bits at the end.
1341 #define BITS_IN_OCTAL 3
1342 #define HIGH_ZERO 0340
1343 #define LOW_ZERO 0016
1344 #define CARRY_ZERO 0003
1345 #define HIGH_ONE 0200
1346 #define MID_ONE 0160
1347 #define LOW_ONE 0016
1348 #define CARRY_ONE 0001
1349 #define HIGH_TWO 0300
1350 #define MID_TWO 0070
1351 #define LOW_TWO 0007
1353 /* For 32 we start in cycle 2, with two bits and one bit carry;
1354 for 64 in cycle in cycle 1, with one bit and a two bit carry. */
1356 cycle = (len * BITS_IN_BYTES) % BITS_IN_OCTAL;
1359 fputs_filtered ("0", stream);
1360 if (byte_order == BFD_ENDIAN_BIG)
1369 /* No carry in, carry out two bits. */
1371 octa1 = (HIGH_ZERO & *p) >> 5;
1372 octa2 = (LOW_ZERO & *p) >> 2;
1373 carry = (CARRY_ZERO & *p);
1374 fprintf_filtered (stream, "%o", octa1);
1375 fprintf_filtered (stream, "%o", octa2);
1379 /* Carry in two bits, carry out one bit. */
1381 octa1 = (carry << 1) | ((HIGH_ONE & *p) >> 7);
1382 octa2 = (MID_ONE & *p) >> 4;
1383 octa3 = (LOW_ONE & *p) >> 1;
1384 carry = (CARRY_ONE & *p);
1385 fprintf_filtered (stream, "%o", octa1);
1386 fprintf_filtered (stream, "%o", octa2);
1387 fprintf_filtered (stream, "%o", octa3);
1391 /* Carry in one bit, no carry out. */
1393 octa1 = (carry << 2) | ((HIGH_TWO & *p) >> 6);
1394 octa2 = (MID_TWO & *p) >> 3;
1395 octa3 = (LOW_TWO & *p);
1397 fprintf_filtered (stream, "%o", octa1);
1398 fprintf_filtered (stream, "%o", octa2);
1399 fprintf_filtered (stream, "%o", octa3);
1403 error (_("Internal error in octal conversion;"));
1407 cycle = cycle % BITS_IN_OCTAL;
1412 for (p = valaddr + len - 1;
1419 /* Carry out, no carry in */
1421 octa1 = (HIGH_ZERO & *p) >> 5;
1422 octa2 = (LOW_ZERO & *p) >> 2;
1423 carry = (CARRY_ZERO & *p);
1424 fprintf_filtered (stream, "%o", octa1);
1425 fprintf_filtered (stream, "%o", octa2);
1429 /* Carry in, carry out */
1431 octa1 = (carry << 1) | ((HIGH_ONE & *p) >> 7);
1432 octa2 = (MID_ONE & *p) >> 4;
1433 octa3 = (LOW_ONE & *p) >> 1;
1434 carry = (CARRY_ONE & *p);
1435 fprintf_filtered (stream, "%o", octa1);
1436 fprintf_filtered (stream, "%o", octa2);
1437 fprintf_filtered (stream, "%o", octa3);
1441 /* Carry in, no carry out */
1443 octa1 = (carry << 2) | ((HIGH_TWO & *p) >> 6);
1444 octa2 = (MID_TWO & *p) >> 3;
1445 octa3 = (LOW_TWO & *p);
1447 fprintf_filtered (stream, "%o", octa1);
1448 fprintf_filtered (stream, "%o", octa2);
1449 fprintf_filtered (stream, "%o", octa3);
1453 error (_("Internal error in octal conversion;"));
1457 cycle = cycle % BITS_IN_OCTAL;
1463 /* VALADDR points to an integer of LEN bytes.
1464 Print it in decimal on stream or format it in buf. */
1467 print_decimal_chars (struct ui_file *stream, const gdb_byte *valaddr,
1468 unsigned len, enum bfd_endian byte_order)
1471 #define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */
1472 #define CARRY_LEFT( x ) ((x) % TEN)
1473 #define SHIFT( x ) ((x) << 4)
1474 #define LOW_NIBBLE( x ) ( (x) & 0x00F)
1475 #define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4)
1478 unsigned char *digits;
1481 int i, j, decimal_digits;
1485 /* Base-ten number is less than twice as many digits
1486 as the base 16 number, which is 2 digits per byte. */
1488 decimal_len = len * 2 * 2;
1489 digits = xmalloc (decimal_len);
1491 for (i = 0; i < decimal_len; i++)
1496 /* Ok, we have an unknown number of bytes of data to be printed in
1499 * Given a hex number (in nibbles) as XYZ, we start by taking X and
1500 * decemalizing it as "x1 x2" in two decimal nibbles. Then we multiply
1501 * the nibbles by 16, add Y and re-decimalize. Repeat with Z.
1503 * The trick is that "digits" holds a base-10 number, but sometimes
1504 * the individual digits are > 10.
1506 * Outer loop is per nibble (hex digit) of input, from MSD end to
1509 decimal_digits = 0; /* Number of decimal digits so far */
1510 p = (byte_order == BFD_ENDIAN_BIG) ? valaddr : valaddr + len - 1;
1512 while ((byte_order == BFD_ENDIAN_BIG) ? (p < valaddr + len) : (p >= valaddr))
1515 * Multiply current base-ten number by 16 in place.
1516 * Each digit was between 0 and 9, now is between
1519 for (j = 0; j < decimal_digits; j++)
1521 digits[j] = SHIFT (digits[j]);
1524 /* Take the next nibble off the input and add it to what
1525 * we've got in the LSB position. Bottom 'digit' is now
1526 * between 0 and 159.
1528 * "flip" is used to run this loop twice for each byte.
1532 /* Take top nibble. */
1534 digits[0] += HIGH_NIBBLE (*p);
1539 /* Take low nibble and bump our pointer "p". */
1541 digits[0] += LOW_NIBBLE (*p);
1542 if (byte_order == BFD_ENDIAN_BIG)
1549 /* Re-decimalize. We have to do this often enough
1550 * that we don't overflow, but once per nibble is
1551 * overkill. Easier this way, though. Note that the
1552 * carry is often larger than 10 (e.g. max initial
1553 * carry out of lowest nibble is 15, could bubble all
1554 * the way up greater than 10). So we have to do
1555 * the carrying beyond the last current digit.
1558 for (j = 0; j < decimal_len - 1; j++)
1562 /* "/" won't handle an unsigned char with
1563 * a value that if signed would be negative.
1564 * So extend to longword int via "dummy".
1567 carry = CARRY_OUT (dummy);
1568 digits[j] = CARRY_LEFT (dummy);
1570 if (j >= decimal_digits && carry == 0)
1573 * All higher digits are 0 and we
1574 * no longer have a carry.
1576 * Note: "j" is 0-based, "decimal_digits" is
1579 decimal_digits = j + 1;
1585 /* Ok, now "digits" is the decimal representation, with
1586 the "decimal_digits" actual digits. Print! */
1588 for (i = decimal_digits - 1; i >= 0; i--)
1590 fprintf_filtered (stream, "%1d", digits[i]);
1595 /* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */
1598 print_hex_chars (struct ui_file *stream, const gdb_byte *valaddr,
1599 unsigned len, enum bfd_endian byte_order)
1603 /* FIXME: We should be not printing leading zeroes in most cases. */
1605 fputs_filtered ("0x", stream);
1606 if (byte_order == BFD_ENDIAN_BIG)
1612 fprintf_filtered (stream, "%02x", *p);
1617 for (p = valaddr + len - 1;
1621 fprintf_filtered (stream, "%02x", *p);
1626 /* VALADDR points to a char integer of LEN bytes.
1627 Print it out in appropriate language form on stream.
1628 Omit any leading zero chars. */
1631 print_char_chars (struct ui_file *stream, struct type *type,
1632 const gdb_byte *valaddr,
1633 unsigned len, enum bfd_endian byte_order)
1637 if (byte_order == BFD_ENDIAN_BIG)
1640 while (p < valaddr + len - 1 && *p == 0)
1643 while (p < valaddr + len)
1645 LA_EMIT_CHAR (*p, type, stream, '\'');
1651 p = valaddr + len - 1;
1652 while (p > valaddr && *p == 0)
1655 while (p >= valaddr)
1657 LA_EMIT_CHAR (*p, type, stream, '\'');
1663 /* Print function pointer with inferior address ADDRESS onto stdio
1667 print_function_pointer_address (const struct value_print_options *options,
1668 struct gdbarch *gdbarch,
1670 struct ui_file *stream)
1673 = gdbarch_convert_from_func_ptr_addr (gdbarch, address,
1676 /* If the function pointer is represented by a description, print
1677 the address of the description. */
1678 if (options->addressprint && func_addr != address)
1680 fputs_filtered ("@", stream);
1681 fputs_filtered (paddress (gdbarch, address), stream);
1682 fputs_filtered (": ", stream);
1684 print_address_demangle (options, gdbarch, func_addr, stream, demangle);
1688 /* Print on STREAM using the given OPTIONS the index for the element
1689 at INDEX of an array whose index type is INDEX_TYPE. */
1692 maybe_print_array_index (struct type *index_type, LONGEST index,
1693 struct ui_file *stream,
1694 const struct value_print_options *options)
1696 struct value *index_value;
1698 if (!options->print_array_indexes)
1701 index_value = value_from_longest (index_type, index);
1703 LA_PRINT_ARRAY_INDEX (index_value, stream, options);
1706 /* Called by various <lang>_val_print routines to print elements of an
1707 array in the form "<elem1>, <elem2>, <elem3>, ...".
1709 (FIXME?) Assumes array element separator is a comma, which is correct
1710 for all languages currently handled.
1711 (FIXME?) Some languages have a notation for repeated array elements,
1712 perhaps we should try to use that notation when appropriate. */
1715 val_print_array_elements (struct type *type,
1716 const gdb_byte *valaddr, int embedded_offset,
1717 CORE_ADDR address, struct ui_file *stream,
1719 const struct value *val,
1720 const struct value_print_options *options,
1723 unsigned int things_printed = 0;
1725 struct type *elttype, *index_type, *base_index_type;
1727 /* Position of the array element we are examining to see
1728 whether it is repeated. */
1730 /* Number of repetitions we have detected so far. */
1732 LONGEST low_bound, high_bound;
1733 LONGEST low_pos, high_pos;
1735 elttype = TYPE_TARGET_TYPE (type);
1736 eltlen = TYPE_LENGTH (check_typedef (elttype));
1737 index_type = TYPE_INDEX_TYPE (type);
1739 if (get_array_bounds (type, &low_bound, &high_bound))
1741 if (TYPE_CODE (index_type) == TYPE_CODE_RANGE)
1742 base_index_type = TYPE_TARGET_TYPE (index_type);
1744 base_index_type = index_type;
1746 /* Non-contiguous enumerations types can by used as index types
1747 in some languages (e.g. Ada). In this case, the array length
1748 shall be computed from the positions of the first and last
1749 literal in the enumeration type, and not from the values
1750 of these literals. */
1751 if (!discrete_position (base_index_type, low_bound, &low_pos)
1752 || !discrete_position (base_index_type, high_bound, &high_pos))
1754 warning (_("unable to get positions in array, use bounds instead"));
1755 low_pos = low_bound;
1756 high_pos = high_bound;
1759 /* The array length should normally be HIGH_POS - LOW_POS + 1.
1760 But we have to be a little extra careful, because some languages
1761 such as Ada allow LOW_POS to be greater than HIGH_POS for
1762 empty arrays. In that situation, the array length is just zero,
1764 if (low_pos > high_pos)
1767 len = high_pos - low_pos + 1;
1771 warning (_("unable to get bounds of array, assuming null array"));
1776 annotate_array_section_begin (i, elttype);
1778 for (; i < len && things_printed < options->print_max; i++)
1782 if (options->prettyformat_arrays)
1784 fprintf_filtered (stream, ",\n");
1785 print_spaces_filtered (2 + 2 * recurse, stream);
1789 fprintf_filtered (stream, ", ");
1792 wrap_here (n_spaces (2 + 2 * recurse));
1793 maybe_print_array_index (index_type, i + low_bound,
1798 /* Only check for reps if repeat_count_threshold is not set to
1799 UINT_MAX (unlimited). */
1800 if (options->repeat_count_threshold < UINT_MAX)
1803 && value_contents_eq (val,
1804 embedded_offset + i * eltlen,
1815 if (reps > options->repeat_count_threshold)
1817 val_print (elttype, valaddr, embedded_offset + i * eltlen,
1818 address, stream, recurse + 1, val, options,
1820 annotate_elt_rep (reps);
1821 fprintf_filtered (stream, " <repeats %u times>", reps);
1822 annotate_elt_rep_end ();
1825 things_printed += options->repeat_count_threshold;
1829 val_print (elttype, valaddr, embedded_offset + i * eltlen,
1831 stream, recurse + 1, val, options, current_language);
1836 annotate_array_section_end ();
1839 fprintf_filtered (stream, "...");
1843 /* Read LEN bytes of target memory at address MEMADDR, placing the
1844 results in GDB's memory at MYADDR. Returns a count of the bytes
1845 actually read, and optionally a target_xfer_status value in the
1846 location pointed to by ERRPTR if ERRPTR is non-null. */
1848 /* FIXME: cagney/1999-10-14: Only used by val_print_string. Can this
1849 function be eliminated. */
1852 partial_memory_read (CORE_ADDR memaddr, gdb_byte *myaddr,
1853 int len, int *errptr)
1855 int nread; /* Number of bytes actually read. */
1856 int errcode; /* Error from last read. */
1858 /* First try a complete read. */
1859 errcode = target_read_memory (memaddr, myaddr, len);
1867 /* Loop, reading one byte at a time until we get as much as we can. */
1868 for (errcode = 0, nread = 0; len > 0 && errcode == 0; nread++, len--)
1870 errcode = target_read_memory (memaddr++, myaddr++, 1);
1872 /* If an error, the last read was unsuccessful, so adjust count. */
1885 /* Read a string from the inferior, at ADDR, with LEN characters of WIDTH bytes
1886 each. Fetch at most FETCHLIMIT characters. BUFFER will be set to a newly
1887 allocated buffer containing the string, which the caller is responsible to
1888 free, and BYTES_READ will be set to the number of bytes read. Returns 0 on
1889 success, or a target_xfer_status on failure.
1891 If LEN > 0, reads the lesser of LEN or FETCHLIMIT characters
1892 (including eventual NULs in the middle or end of the string).
1894 If LEN is -1, stops at the first null character (not necessarily
1895 the first null byte) up to a maximum of FETCHLIMIT characters. Set
1896 FETCHLIMIT to UINT_MAX to read as many characters as possible from
1899 Unless an exception is thrown, BUFFER will always be allocated, even on
1900 failure. In this case, some characters might have been read before the
1901 failure happened. Check BYTES_READ to recognize this situation.
1903 Note: There was a FIXME asking to make this code use target_read_string,
1904 but this function is more general (can read past null characters, up to
1905 given LEN). Besides, it is used much more often than target_read_string
1906 so it is more tested. Perhaps callers of target_read_string should use
1907 this function instead? */
1910 read_string (CORE_ADDR addr, int len, int width, unsigned int fetchlimit,
1911 enum bfd_endian byte_order, gdb_byte **buffer, int *bytes_read)
1913 int errcode; /* Errno returned from bad reads. */
1914 unsigned int nfetch; /* Chars to fetch / chars fetched. */
1915 gdb_byte *bufptr; /* Pointer to next available byte in
1917 struct cleanup *old_chain = NULL; /* Top of the old cleanup chain. */
1919 /* Loop until we either have all the characters, or we encounter
1920 some error, such as bumping into the end of the address space. */
1924 old_chain = make_cleanup (free_current_contents, buffer);
1928 /* We want fetchlimit chars, so we might as well read them all in
1930 unsigned int fetchlen = min (len, fetchlimit);
1932 *buffer = (gdb_byte *) xmalloc (fetchlen * width);
1935 nfetch = partial_memory_read (addr, bufptr, fetchlen * width, &errcode)
1937 addr += nfetch * width;
1938 bufptr += nfetch * width;
1942 unsigned long bufsize = 0;
1943 unsigned int chunksize; /* Size of each fetch, in chars. */
1944 int found_nul; /* Non-zero if we found the nul char. */
1945 gdb_byte *limit; /* First location past end of fetch buffer. */
1948 /* We are looking for a NUL terminator to end the fetching, so we
1949 might as well read in blocks that are large enough to be efficient,
1950 but not so large as to be slow if fetchlimit happens to be large.
1951 So we choose the minimum of 8 and fetchlimit. We used to use 200
1952 instead of 8 but 200 is way too big for remote debugging over a
1954 chunksize = min (8, fetchlimit);
1959 nfetch = min (chunksize, fetchlimit - bufsize);
1961 if (*buffer == NULL)
1962 *buffer = (gdb_byte *) xmalloc (nfetch * width);
1964 *buffer = (gdb_byte *) xrealloc (*buffer,
1965 (nfetch + bufsize) * width);
1967 bufptr = *buffer + bufsize * width;
1970 /* Read as much as we can. */
1971 nfetch = partial_memory_read (addr, bufptr, nfetch * width, &errcode)
1974 /* Scan this chunk for the null character that terminates the string
1975 to print. If found, we don't need to fetch any more. Note
1976 that bufptr is explicitly left pointing at the next character
1977 after the null character, or at the next character after the end
1980 limit = bufptr + nfetch * width;
1981 while (bufptr < limit)
1985 c = extract_unsigned_integer (bufptr, width, byte_order);
1990 /* We don't care about any error which happened after
1991 the NUL terminator. */
1998 while (errcode == 0 /* no error */
1999 && bufptr - *buffer < fetchlimit * width /* no overrun */
2000 && !found_nul); /* haven't found NUL yet */
2003 { /* Length of string is really 0! */
2004 /* We always allocate *buffer. */
2005 *buffer = bufptr = xmalloc (1);
2009 /* bufptr and addr now point immediately beyond the last byte which we
2010 consider part of the string (including a '\0' which ends the string). */
2011 *bytes_read = bufptr - *buffer;
2015 discard_cleanups (old_chain);
2020 /* Return true if print_wchar can display W without resorting to a
2021 numeric escape, false otherwise. */
2024 wchar_printable (gdb_wchar_t w)
2026 return (gdb_iswprint (w)
2027 || w == LCST ('\a') || w == LCST ('\b')
2028 || w == LCST ('\f') || w == LCST ('\n')
2029 || w == LCST ('\r') || w == LCST ('\t')
2030 || w == LCST ('\v'));
2033 /* A helper function that converts the contents of STRING to wide
2034 characters and then appends them to OUTPUT. */
2037 append_string_as_wide (const char *string,
2038 struct obstack *output)
2040 for (; *string; ++string)
2042 gdb_wchar_t w = gdb_btowc (*string);
2043 obstack_grow (output, &w, sizeof (gdb_wchar_t));
2047 /* Print a wide character W to OUTPUT. ORIG is a pointer to the
2048 original (target) bytes representing the character, ORIG_LEN is the
2049 number of valid bytes. WIDTH is the number of bytes in a base
2050 characters of the type. OUTPUT is an obstack to which wide
2051 characters are emitted. QUOTER is a (narrow) character indicating
2052 the style of quotes surrounding the character to be printed.
2053 NEED_ESCAPE is an in/out flag which is used to track numeric
2054 escapes across calls. */
2057 print_wchar (gdb_wint_t w, const gdb_byte *orig,
2058 int orig_len, int width,
2059 enum bfd_endian byte_order,
2060 struct obstack *output,
2061 int quoter, int *need_escapep)
2063 int need_escape = *need_escapep;
2067 /* iswprint implementation on Windows returns 1 for tab character.
2068 In order to avoid different printout on this host, we explicitly
2069 use wchar_printable function. */
2073 obstack_grow_wstr (output, LCST ("\\a"));
2076 obstack_grow_wstr (output, LCST ("\\b"));
2079 obstack_grow_wstr (output, LCST ("\\f"));
2082 obstack_grow_wstr (output, LCST ("\\n"));
2085 obstack_grow_wstr (output, LCST ("\\r"));
2088 obstack_grow_wstr (output, LCST ("\\t"));
2091 obstack_grow_wstr (output, LCST ("\\v"));
2095 if (wchar_printable (w) && (!need_escape || (!gdb_iswdigit (w)
2097 && w != LCST ('9'))))
2099 gdb_wchar_t wchar = w;
2101 if (w == gdb_btowc (quoter) || w == LCST ('\\'))
2102 obstack_grow_wstr (output, LCST ("\\"));
2103 obstack_grow (output, &wchar, sizeof (gdb_wchar_t));
2109 for (i = 0; i + width <= orig_len; i += width)
2114 value = extract_unsigned_integer (&orig[i], width,
2116 /* If the value fits in 3 octal digits, print it that
2117 way. Otherwise, print it as a hex escape. */
2119 xsnprintf (octal, sizeof (octal), "\\%.3o",
2120 (int) (value & 0777));
2122 xsnprintf (octal, sizeof (octal), "\\x%lx", (long) value);
2123 append_string_as_wide (octal, output);
2125 /* If we somehow have extra bytes, print them now. */
2126 while (i < orig_len)
2130 xsnprintf (octal, sizeof (octal), "\\%.3o", orig[i] & 0xff);
2131 append_string_as_wide (octal, output);
2142 /* Print the character C on STREAM as part of the contents of a
2143 literal string whose delimiter is QUOTER. ENCODING names the
2147 generic_emit_char (int c, struct type *type, struct ui_file *stream,
2148 int quoter, const char *encoding)
2150 enum bfd_endian byte_order
2151 = gdbarch_byte_order (get_type_arch (type));
2152 struct obstack wchar_buf, output;
2153 struct cleanup *cleanups;
2155 struct wchar_iterator *iter;
2156 int need_escape = 0;
2158 buf = alloca (TYPE_LENGTH (type));
2159 pack_long (buf, type, c);
2161 iter = make_wchar_iterator (buf, TYPE_LENGTH (type),
2162 encoding, TYPE_LENGTH (type));
2163 cleanups = make_cleanup_wchar_iterator (iter);
2165 /* This holds the printable form of the wchar_t data. */
2166 obstack_init (&wchar_buf);
2167 make_cleanup_obstack_free (&wchar_buf);
2173 const gdb_byte *buf;
2175 int print_escape = 1;
2176 enum wchar_iterate_result result;
2178 num_chars = wchar_iterate (iter, &result, &chars, &buf, &buflen);
2183 /* If all characters are printable, print them. Otherwise,
2184 we're going to have to print an escape sequence. We
2185 check all characters because we want to print the target
2186 bytes in the escape sequence, and we don't know character
2187 boundaries there. */
2191 for (i = 0; i < num_chars; ++i)
2192 if (!wchar_printable (chars[i]))
2200 for (i = 0; i < num_chars; ++i)
2201 print_wchar (chars[i], buf, buflen,
2202 TYPE_LENGTH (type), byte_order,
2203 &wchar_buf, quoter, &need_escape);
2207 /* This handles the NUM_CHARS == 0 case as well. */
2209 print_wchar (gdb_WEOF, buf, buflen, TYPE_LENGTH (type),
2210 byte_order, &wchar_buf, quoter, &need_escape);
2213 /* The output in the host encoding. */
2214 obstack_init (&output);
2215 make_cleanup_obstack_free (&output);
2217 convert_between_encodings (INTERMEDIATE_ENCODING, host_charset (),
2218 (gdb_byte *) obstack_base (&wchar_buf),
2219 obstack_object_size (&wchar_buf),
2220 sizeof (gdb_wchar_t), &output, translit_char);
2221 obstack_1grow (&output, '\0');
2223 fputs_filtered (obstack_base (&output), stream);
2225 do_cleanups (cleanups);
2228 /* Return the repeat count of the next character/byte in ITER,
2229 storing the result in VEC. */
2232 count_next_character (struct wchar_iterator *iter,
2233 VEC (converted_character_d) **vec)
2235 struct converted_character *current;
2237 if (VEC_empty (converted_character_d, *vec))
2239 struct converted_character tmp;
2243 = wchar_iterate (iter, &tmp.result, &chars, &tmp.buf, &tmp.buflen);
2244 if (tmp.num_chars > 0)
2246 gdb_assert (tmp.num_chars < MAX_WCHARS);
2247 memcpy (tmp.chars, chars, tmp.num_chars * sizeof (gdb_wchar_t));
2249 VEC_safe_push (converted_character_d, *vec, &tmp);
2252 current = VEC_last (converted_character_d, *vec);
2254 /* Count repeated characters or bytes. */
2255 current->repeat_count = 1;
2256 if (current->num_chars == -1)
2264 struct converted_character d;
2271 /* Get the next character. */
2273 = wchar_iterate (iter, &d.result, &chars, &d.buf, &d.buflen);
2275 /* If a character was successfully converted, save the character
2276 into the converted character. */
2277 if (d.num_chars > 0)
2279 gdb_assert (d.num_chars < MAX_WCHARS);
2280 memcpy (d.chars, chars, WCHAR_BUFLEN (d.num_chars));
2283 /* Determine if the current character is the same as this
2285 if (d.num_chars == current->num_chars && d.result == current->result)
2287 /* There are two cases to consider:
2289 1) Equality of converted character (num_chars > 0)
2290 2) Equality of non-converted character (num_chars == 0) */
2291 if ((current->num_chars > 0
2292 && memcmp (current->chars, d.chars,
2293 WCHAR_BUFLEN (current->num_chars)) == 0)
2294 || (current->num_chars == 0
2295 && current->buflen == d.buflen
2296 && memcmp (current->buf, d.buf, current->buflen) == 0))
2297 ++current->repeat_count;
2305 /* Push this next converted character onto the result vector. */
2306 repeat = current->repeat_count;
2307 VEC_safe_push (converted_character_d, *vec, &d);
2312 /* Print the characters in CHARS to the OBSTACK. QUOTE_CHAR is the quote
2313 character to use with string output. WIDTH is the size of the output
2314 character type. BYTE_ORDER is the the target byte order. OPTIONS
2315 is the user's print options. */
2318 print_converted_chars_to_obstack (struct obstack *obstack,
2319 VEC (converted_character_d) *chars,
2320 int quote_char, int width,
2321 enum bfd_endian byte_order,
2322 const struct value_print_options *options)
2325 struct converted_character *elem;
2326 enum {START, SINGLE, REPEAT, INCOMPLETE, FINISH} state, last;
2327 gdb_wchar_t wide_quote_char = gdb_btowc (quote_char);
2328 int need_escape = 0;
2330 /* Set the start state. */
2332 last = state = START;
2340 /* Nothing to do. */
2347 /* We are outputting a single character
2348 (< options->repeat_count_threshold). */
2352 /* We were outputting some other type of content, so we
2353 must output and a comma and a quote. */
2355 obstack_grow_wstr (obstack, LCST (", "));
2356 obstack_grow (obstack, &wide_quote_char, sizeof (gdb_wchar_t));
2358 /* Output the character. */
2359 for (j = 0; j < elem->repeat_count; ++j)
2361 if (elem->result == wchar_iterate_ok)
2362 print_wchar (elem->chars[0], elem->buf, elem->buflen, width,
2363 byte_order, obstack, quote_char, &need_escape);
2365 print_wchar (gdb_WEOF, elem->buf, elem->buflen, width,
2366 byte_order, obstack, quote_char, &need_escape);
2376 /* We are outputting a character with a repeat count
2377 greater than options->repeat_count_threshold. */
2381 /* We were outputting a single string. Terminate the
2383 obstack_grow (obstack, &wide_quote_char, sizeof (gdb_wchar_t));
2386 obstack_grow_wstr (obstack, LCST (", "));
2388 /* Output the character and repeat string. */
2389 obstack_grow_wstr (obstack, LCST ("'"));
2390 if (elem->result == wchar_iterate_ok)
2391 print_wchar (elem->chars[0], elem->buf, elem->buflen, width,
2392 byte_order, obstack, quote_char, &need_escape);
2394 print_wchar (gdb_WEOF, elem->buf, elem->buflen, width,
2395 byte_order, obstack, quote_char, &need_escape);
2396 obstack_grow_wstr (obstack, LCST ("'"));
2397 s = xstrprintf (_(" <repeats %u times>"), elem->repeat_count);
2398 for (j = 0; s[j]; ++j)
2400 gdb_wchar_t w = gdb_btowc (s[j]);
2401 obstack_grow (obstack, &w, sizeof (gdb_wchar_t));
2408 /* We are outputting an incomplete sequence. */
2411 /* If we were outputting a string of SINGLE characters,
2412 terminate the quote. */
2413 obstack_grow (obstack, &wide_quote_char, sizeof (gdb_wchar_t));
2416 obstack_grow_wstr (obstack, LCST (", "));
2418 /* Output the incomplete sequence string. */
2419 obstack_grow_wstr (obstack, LCST ("<incomplete sequence "));
2420 print_wchar (gdb_WEOF, elem->buf, elem->buflen, width, byte_order,
2421 obstack, 0, &need_escape);
2422 obstack_grow_wstr (obstack, LCST (">"));
2424 /* We do not attempt to outupt anything after this. */
2429 /* All done. If we were outputting a string of SINGLE
2430 characters, the string must be terminated. Otherwise,
2431 REPEAT and INCOMPLETE are always left properly terminated. */
2433 obstack_grow (obstack, &wide_quote_char, sizeof (gdb_wchar_t));
2438 /* Get the next element and state. */
2440 if (state != FINISH)
2442 elem = VEC_index (converted_character_d, chars, idx++);
2443 switch (elem->result)
2445 case wchar_iterate_ok:
2446 case wchar_iterate_invalid:
2447 if (elem->repeat_count > options->repeat_count_threshold)
2453 case wchar_iterate_incomplete:
2457 case wchar_iterate_eof:
2465 /* Print the character string STRING, printing at most LENGTH
2466 characters. LENGTH is -1 if the string is nul terminated. TYPE is
2467 the type of each character. OPTIONS holds the printing options;
2468 printing stops early if the number hits print_max; repeat counts
2469 are printed as appropriate. Print ellipses at the end if we had to
2470 stop before printing LENGTH characters, or if FORCE_ELLIPSES.
2471 QUOTE_CHAR is the character to print at each end of the string. If
2472 C_STYLE_TERMINATOR is true, and the last character is 0, then it is
2476 generic_printstr (struct ui_file *stream, struct type *type,
2477 const gdb_byte *string, unsigned int length,
2478 const char *encoding, int force_ellipses,
2479 int quote_char, int c_style_terminator,
2480 const struct value_print_options *options)
2482 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
2484 int width = TYPE_LENGTH (type);
2485 struct obstack wchar_buf, output;
2486 struct cleanup *cleanup;
2487 struct wchar_iterator *iter;
2489 struct converted_character *last;
2490 VEC (converted_character_d) *converted_chars;
2494 unsigned long current_char = 1;
2496 for (i = 0; current_char; ++i)
2499 current_char = extract_unsigned_integer (string + i * width,
2505 /* If the string was not truncated due to `set print elements', and
2506 the last byte of it is a null, we don't print that, in
2507 traditional C style. */
2508 if (c_style_terminator
2511 && (extract_unsigned_integer (string + (length - 1) * width,
2512 width, byte_order) == 0))
2517 fputs_filtered ("\"\"", stream);
2521 /* Arrange to iterate over the characters, in wchar_t form. */
2522 iter = make_wchar_iterator (string, length * width, encoding, width);
2523 cleanup = make_cleanup_wchar_iterator (iter);
2524 converted_chars = NULL;
2525 make_cleanup (VEC_cleanup (converted_character_d), &converted_chars);
2527 /* Convert characters until the string is over or the maximum
2528 number of printed characters has been reached. */
2530 while (i < options->print_max)
2536 /* Grab the next character and repeat count. */
2537 r = count_next_character (iter, &converted_chars);
2539 /* If less than zero, the end of the input string was reached. */
2543 /* Otherwise, add the count to the total print count and get
2544 the next character. */
2548 /* Get the last element and determine if the entire string was
2550 last = VEC_last (converted_character_d, converted_chars);
2551 finished = (last->result == wchar_iterate_eof);
2553 /* Ensure that CONVERTED_CHARS is terminated. */
2554 last->result = wchar_iterate_eof;
2556 /* WCHAR_BUF is the obstack we use to represent the string in
2558 obstack_init (&wchar_buf);
2559 make_cleanup_obstack_free (&wchar_buf);
2561 /* Print the output string to the obstack. */
2562 print_converted_chars_to_obstack (&wchar_buf, converted_chars, quote_char,
2563 width, byte_order, options);
2565 if (force_ellipses || !finished)
2566 obstack_grow_wstr (&wchar_buf, LCST ("..."));
2568 /* OUTPUT is where we collect `char's for printing. */
2569 obstack_init (&output);
2570 make_cleanup_obstack_free (&output);
2572 convert_between_encodings (INTERMEDIATE_ENCODING, host_charset (),
2573 (gdb_byte *) obstack_base (&wchar_buf),
2574 obstack_object_size (&wchar_buf),
2575 sizeof (gdb_wchar_t), &output, translit_char);
2576 obstack_1grow (&output, '\0');
2578 fputs_filtered (obstack_base (&output), stream);
2580 do_cleanups (cleanup);
2583 /* Print a string from the inferior, starting at ADDR and printing up to LEN
2584 characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing
2585 stops at the first null byte, otherwise printing proceeds (including null
2586 bytes) until either print_max or LEN characters have been printed,
2587 whichever is smaller. ENCODING is the name of the string's
2588 encoding. It can be NULL, in which case the target encoding is
2592 val_print_string (struct type *elttype, const char *encoding,
2593 CORE_ADDR addr, int len,
2594 struct ui_file *stream,
2595 const struct value_print_options *options)
2597 int force_ellipsis = 0; /* Force ellipsis to be printed if nonzero. */
2598 int errcode; /* Errno returned from bad reads. */
2599 int found_nul; /* Non-zero if we found the nul char. */
2600 unsigned int fetchlimit; /* Maximum number of chars to print. */
2602 gdb_byte *buffer = NULL; /* Dynamically growable fetch buffer. */
2603 struct cleanup *old_chain = NULL; /* Top of the old cleanup chain. */
2604 struct gdbarch *gdbarch = get_type_arch (elttype);
2605 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
2606 int width = TYPE_LENGTH (elttype);
2608 /* First we need to figure out the limit on the number of characters we are
2609 going to attempt to fetch and print. This is actually pretty simple. If
2610 LEN >= zero, then the limit is the minimum of LEN and print_max. If
2611 LEN is -1, then the limit is print_max. This is true regardless of
2612 whether print_max is zero, UINT_MAX (unlimited), or something in between,
2613 because finding the null byte (or available memory) is what actually
2614 limits the fetch. */
2616 fetchlimit = (len == -1 ? options->print_max : min (len,
2617 options->print_max));
2619 errcode = read_string (addr, len, width, fetchlimit, byte_order,
2620 &buffer, &bytes_read);
2621 old_chain = make_cleanup (xfree, buffer);
2625 /* We now have either successfully filled the buffer to fetchlimit,
2626 or terminated early due to an error or finding a null char when
2629 /* Determine found_nul by looking at the last character read. */
2631 if (bytes_read >= width)
2632 found_nul = extract_unsigned_integer (buffer + bytes_read - width, width,
2634 if (len == -1 && !found_nul)
2638 /* We didn't find a NUL terminator we were looking for. Attempt
2639 to peek at the next character. If not successful, or it is not
2640 a null byte, then force ellipsis to be printed. */
2642 peekbuf = (gdb_byte *) alloca (width);
2644 if (target_read_memory (addr, peekbuf, width) == 0
2645 && extract_unsigned_integer (peekbuf, width, byte_order) != 0)
2648 else if ((len >= 0 && errcode != 0) || (len > bytes_read / width))
2650 /* Getting an error when we have a requested length, or fetching less
2651 than the number of characters actually requested, always make us
2656 /* If we get an error before fetching anything, don't print a string.
2657 But if we fetch something and then get an error, print the string
2658 and then the error message. */
2659 if (errcode == 0 || bytes_read > 0)
2661 LA_PRINT_STRING (stream, elttype, buffer, bytes_read / width,
2662 encoding, force_ellipsis, options);
2669 str = memory_error_message (errcode, gdbarch, addr);
2670 make_cleanup (xfree, str);
2672 fprintf_filtered (stream, "<error: ");
2673 fputs_filtered (str, stream);
2674 fprintf_filtered (stream, ">");
2678 do_cleanups (old_chain);
2680 return (bytes_read / width);
2684 /* The 'set input-radix' command writes to this auxiliary variable.
2685 If the requested radix is valid, INPUT_RADIX is updated; otherwise,
2686 it is left unchanged. */
2688 static unsigned input_radix_1 = 10;
2690 /* Validate an input or output radix setting, and make sure the user
2691 knows what they really did here. Radix setting is confusing, e.g.
2692 setting the input radix to "10" never changes it! */
2695 set_input_radix (char *args, int from_tty, struct cmd_list_element *c)
2697 set_input_radix_1 (from_tty, input_radix_1);
2701 set_input_radix_1 (int from_tty, unsigned radix)
2703 /* We don't currently disallow any input radix except 0 or 1, which don't
2704 make any mathematical sense. In theory, we can deal with any input
2705 radix greater than 1, even if we don't have unique digits for every
2706 value from 0 to radix-1, but in practice we lose on large radix values.
2707 We should either fix the lossage or restrict the radix range more.
2712 input_radix_1 = input_radix;
2713 error (_("Nonsense input radix ``decimal %u''; input radix unchanged."),
2716 input_radix_1 = input_radix = radix;
2719 printf_filtered (_("Input radix now set to "
2720 "decimal %u, hex %x, octal %o.\n"),
2721 radix, radix, radix);
2725 /* The 'set output-radix' command writes to this auxiliary variable.
2726 If the requested radix is valid, OUTPUT_RADIX is updated,
2727 otherwise, it is left unchanged. */
2729 static unsigned output_radix_1 = 10;
2732 set_output_radix (char *args, int from_tty, struct cmd_list_element *c)
2734 set_output_radix_1 (from_tty, output_radix_1);
2738 set_output_radix_1 (int from_tty, unsigned radix)
2740 /* Validate the radix and disallow ones that we aren't prepared to
2741 handle correctly, leaving the radix unchanged. */
2745 user_print_options.output_format = 'x'; /* hex */
2748 user_print_options.output_format = 0; /* decimal */
2751 user_print_options.output_format = 'o'; /* octal */
2754 output_radix_1 = output_radix;
2755 error (_("Unsupported output radix ``decimal %u''; "
2756 "output radix unchanged."),
2759 output_radix_1 = output_radix = radix;
2762 printf_filtered (_("Output radix now set to "
2763 "decimal %u, hex %x, octal %o.\n"),
2764 radix, radix, radix);
2768 /* Set both the input and output radix at once. Try to set the output radix
2769 first, since it has the most restrictive range. An radix that is valid as
2770 an output radix is also valid as an input radix.
2772 It may be useful to have an unusual input radix. If the user wishes to
2773 set an input radix that is not valid as an output radix, he needs to use
2774 the 'set input-radix' command. */
2777 set_radix (char *arg, int from_tty)
2781 radix = (arg == NULL) ? 10 : parse_and_eval_long (arg);
2782 set_output_radix_1 (0, radix);
2783 set_input_radix_1 (0, radix);
2786 printf_filtered (_("Input and output radices now set to "
2787 "decimal %u, hex %x, octal %o.\n"),
2788 radix, radix, radix);
2792 /* Show both the input and output radices. */
2795 show_radix (char *arg, int from_tty)
2799 if (input_radix == output_radix)
2801 printf_filtered (_("Input and output radices set to "
2802 "decimal %u, hex %x, octal %o.\n"),
2803 input_radix, input_radix, input_radix);
2807 printf_filtered (_("Input radix set to decimal "
2808 "%u, hex %x, octal %o.\n"),
2809 input_radix, input_radix, input_radix);
2810 printf_filtered (_("Output radix set to decimal "
2811 "%u, hex %x, octal %o.\n"),
2812 output_radix, output_radix, output_radix);
2819 set_print (char *arg, int from_tty)
2822 "\"set print\" must be followed by the name of a print subcommand.\n");
2823 help_list (setprintlist, "set print ", all_commands, gdb_stdout);
2827 show_print (char *args, int from_tty)
2829 cmd_show_list (showprintlist, from_tty, "");
2833 set_print_raw (char *arg, int from_tty)
2836 "\"set print raw\" must be followed by the name of a \"print raw\" subcommand.\n");
2837 help_list (setprintrawlist, "set print raw ", all_commands, gdb_stdout);
2841 show_print_raw (char *args, int from_tty)
2843 cmd_show_list (showprintrawlist, from_tty, "");
2848 _initialize_valprint (void)
2850 add_prefix_cmd ("print", no_class, set_print,
2851 _("Generic command for setting how things print."),
2852 &setprintlist, "set print ", 0, &setlist);
2853 add_alias_cmd ("p", "print", no_class, 1, &setlist);
2854 /* Prefer set print to set prompt. */
2855 add_alias_cmd ("pr", "print", no_class, 1, &setlist);
2857 add_prefix_cmd ("print", no_class, show_print,
2858 _("Generic command for showing print settings."),
2859 &showprintlist, "show print ", 0, &showlist);
2860 add_alias_cmd ("p", "print", no_class, 1, &showlist);
2861 add_alias_cmd ("pr", "print", no_class, 1, &showlist);
2863 add_prefix_cmd ("raw", no_class, set_print_raw,
2865 Generic command for setting what things to print in \"raw\" mode."),
2866 &setprintrawlist, "set print raw ", 0, &setprintlist);
2867 add_prefix_cmd ("raw", no_class, show_print_raw,
2868 _("Generic command for showing \"print raw\" settings."),
2869 &showprintrawlist, "show print raw ", 0, &showprintlist);
2871 add_setshow_uinteger_cmd ("elements", no_class,
2872 &user_print_options.print_max, _("\
2873 Set limit on string chars or array elements to print."), _("\
2874 Show limit on string chars or array elements to print."), _("\
2875 \"set print elements unlimited\" causes there to be no limit."),
2878 &setprintlist, &showprintlist);
2880 add_setshow_boolean_cmd ("null-stop", no_class,
2881 &user_print_options.stop_print_at_null, _("\
2882 Set printing of char arrays to stop at first null char."), _("\
2883 Show printing of char arrays to stop at first null char."), NULL,
2885 show_stop_print_at_null,
2886 &setprintlist, &showprintlist);
2888 add_setshow_uinteger_cmd ("repeats", no_class,
2889 &user_print_options.repeat_count_threshold, _("\
2890 Set threshold for repeated print elements."), _("\
2891 Show threshold for repeated print elements."), _("\
2892 \"set print repeats unlimited\" causes all elements to be individually printed."),
2894 show_repeat_count_threshold,
2895 &setprintlist, &showprintlist);
2897 add_setshow_boolean_cmd ("pretty", class_support,
2898 &user_print_options.prettyformat_structs, _("\
2899 Set pretty formatting of structures."), _("\
2900 Show pretty formatting of structures."), NULL,
2902 show_prettyformat_structs,
2903 &setprintlist, &showprintlist);
2905 add_setshow_boolean_cmd ("union", class_support,
2906 &user_print_options.unionprint, _("\
2907 Set printing of unions interior to structures."), _("\
2908 Show printing of unions interior to structures."), NULL,
2911 &setprintlist, &showprintlist);
2913 add_setshow_boolean_cmd ("array", class_support,
2914 &user_print_options.prettyformat_arrays, _("\
2915 Set pretty formatting of arrays."), _("\
2916 Show pretty formatting of arrays."), NULL,
2918 show_prettyformat_arrays,
2919 &setprintlist, &showprintlist);
2921 add_setshow_boolean_cmd ("address", class_support,
2922 &user_print_options.addressprint, _("\
2923 Set printing of addresses."), _("\
2924 Show printing of addresses."), NULL,
2927 &setprintlist, &showprintlist);
2929 add_setshow_boolean_cmd ("symbol", class_support,
2930 &user_print_options.symbol_print, _("\
2931 Set printing of symbol names when printing pointers."), _("\
2932 Show printing of symbol names when printing pointers."),
2935 &setprintlist, &showprintlist);
2937 add_setshow_zuinteger_cmd ("input-radix", class_support, &input_radix_1,
2939 Set default input radix for entering numbers."), _("\
2940 Show default input radix for entering numbers."), NULL,
2943 &setlist, &showlist);
2945 add_setshow_zuinteger_cmd ("output-radix", class_support, &output_radix_1,
2947 Set default output radix for printing of values."), _("\
2948 Show default output radix for printing of values."), NULL,
2951 &setlist, &showlist);
2953 /* The "set radix" and "show radix" commands are special in that
2954 they are like normal set and show commands but allow two normally
2955 independent variables to be either set or shown with a single
2956 command. So the usual deprecated_add_set_cmd() and [deleted]
2957 add_show_from_set() commands aren't really appropriate. */
2958 /* FIXME: i18n: With the new add_setshow_integer command, that is no
2959 longer true - show can display anything. */
2960 add_cmd ("radix", class_support, set_radix, _("\
2961 Set default input and output number radices.\n\
2962 Use 'set input-radix' or 'set output-radix' to independently set each.\n\
2963 Without an argument, sets both radices back to the default value of 10."),
2965 add_cmd ("radix", class_support, show_radix, _("\
2966 Show the default input and output number radices.\n\
2967 Use 'show input-radix' or 'show output-radix' to independently show each."),
2970 add_setshow_boolean_cmd ("array-indexes", class_support,
2971 &user_print_options.print_array_indexes, _("\
2972 Set printing of array indexes."), _("\
2973 Show printing of array indexes"), NULL, NULL, show_print_array_indexes,
2974 &setprintlist, &showprintlist);