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 /* generic_val_print helper for TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
600 generic_val_print_func (struct type *type, const gdb_byte *valaddr,
601 int embedded_offset, CORE_ADDR address,
602 struct ui_file *stream,
603 const struct value *original_value,
604 const struct value_print_options *options)
606 struct gdbarch *gdbarch = get_type_arch (type);
610 val_print_scalar_formatted (type, valaddr, embedded_offset,
611 original_value, options, 0, stream);
615 /* FIXME, we should consider, at least for ANSI C language,
616 eliminating the distinction made between FUNCs and POINTERs
618 fprintf_filtered (stream, "{");
619 type_print (type, "", stream, -1);
620 fprintf_filtered (stream, "} ");
621 /* Try to print what function it points to, and its address. */
622 print_address_demangle (options, gdbarch, address, stream, demangle);
626 /* generic_val_print helper for TYPE_CODE_BOOL. */
629 generic_val_print_bool (struct type *type, const gdb_byte *valaddr,
630 int embedded_offset, struct ui_file *stream,
631 const struct value *original_value,
632 const struct value_print_options *options,
633 const struct generic_val_print_decorations *decorations)
637 if (options->format || options->output_format)
639 struct value_print_options opts = *options;
640 opts.format = (options->format ? options->format
641 : options->output_format);
642 val_print_scalar_formatted (type, valaddr, embedded_offset,
643 original_value, &opts, 0, stream);
647 val = unpack_long (type, valaddr + embedded_offset);
649 fputs_filtered (decorations->false_name, stream);
651 fputs_filtered (decorations->true_name, stream);
653 print_longest (stream, 'd', 0, val);
657 /* generic_val_print helper for TYPE_CODE_INT. */
660 generic_val_print_int (struct type *type, const gdb_byte *valaddr,
661 int embedded_offset, struct ui_file *stream,
662 const struct value *original_value,
663 const struct value_print_options *options)
665 if (options->format || options->output_format)
667 struct value_print_options opts = *options;
669 opts.format = (options->format ? options->format
670 : options->output_format);
671 val_print_scalar_formatted (type, valaddr, embedded_offset,
672 original_value, &opts, 0, stream);
675 val_print_type_code_int (type, valaddr + embedded_offset, stream);
678 /* generic_val_print helper for TYPE_CODE_CHAR. */
681 generic_val_print_char (struct type *type, struct type *unresolved_type,
682 const gdb_byte *valaddr, int embedded_offset,
683 struct ui_file *stream,
684 const struct value *original_value,
685 const struct value_print_options *options)
689 if (options->format || options->output_format)
691 struct value_print_options opts = *options;
693 opts.format = (options->format ? options->format
694 : options->output_format);
695 val_print_scalar_formatted (type, valaddr, embedded_offset,
696 original_value, &opts, 0, stream);
700 val = unpack_long (type, valaddr + embedded_offset);
701 if (TYPE_UNSIGNED (type))
702 fprintf_filtered (stream, "%u", (unsigned int) val);
704 fprintf_filtered (stream, "%d", (int) val);
705 fputs_filtered (" ", stream);
706 LA_PRINT_CHAR (val, unresolved_type, stream);
710 /* generic_val_print helper for TYPE_CODE_FLT. */
713 generic_val_print_float (struct type *type, const gdb_byte *valaddr,
714 int embedded_offset, struct ui_file *stream,
715 const struct value *original_value,
716 const struct value_print_options *options)
720 val_print_scalar_formatted (type, valaddr, embedded_offset,
721 original_value, options, 0, stream);
725 print_floating (valaddr + embedded_offset, type, stream);
729 /* A generic val_print that is suitable for use by language
730 implementations of the la_val_print method. This function can
731 handle most type codes, though not all, notably exception
732 TYPE_CODE_UNION and TYPE_CODE_STRUCT, which must be implemented by
735 Most arguments are as to val_print.
737 The additional DECORATIONS argument can be used to customize the
738 output in some small, language-specific ways. */
741 generic_val_print (struct type *type, const gdb_byte *valaddr,
742 int embedded_offset, CORE_ADDR address,
743 struct ui_file *stream, int recurse,
744 const struct value *original_value,
745 const struct value_print_options *options,
746 const struct generic_val_print_decorations *decorations)
748 struct type *unresolved_type = type;
750 type = check_typedef (type);
751 switch (TYPE_CODE (type))
753 case TYPE_CODE_ARRAY:
754 generic_val_print_array (type, valaddr, embedded_offset, address, stream,
755 recurse, original_value, options);
758 case TYPE_CODE_MEMBERPTR:
759 generic_val_print_memberptr (type, valaddr, embedded_offset, stream,
760 original_value, options);
764 generic_val_print_ptr (type, valaddr, embedded_offset, stream,
765 original_value, options);
769 generic_val_print_ref (type, valaddr, embedded_offset, stream, recurse,
770 original_value, options);
774 generic_val_print_enum (type, valaddr, embedded_offset, stream,
775 original_value, options);
778 case TYPE_CODE_FLAGS:
779 generic_val_print_flags (type, valaddr, embedded_offset, stream,
780 original_value, options);
784 case TYPE_CODE_METHOD:
785 generic_val_print_func (type, valaddr, embedded_offset, address, stream,
786 original_value, options);
790 generic_val_print_bool (type, valaddr, embedded_offset, stream,
791 original_value, options, decorations);
794 case TYPE_CODE_RANGE:
795 /* FIXME: create_static_range_type does not set the unsigned bit in a
796 range type (I think it probably should copy it from the
797 target type), so we won't print values which are too large to
798 fit in a signed integer correctly. */
799 /* FIXME: Doesn't handle ranges of enums correctly. (Can't just
800 print with the target type, though, because the size of our
801 type and the target type might differ). */
806 generic_val_print_int (type, valaddr, embedded_offset, stream,
807 original_value, options);
811 generic_val_print_char (type, unresolved_type, valaddr, embedded_offset,
812 stream, original_value, options);
816 generic_val_print_float (type, valaddr, embedded_offset, stream,
817 original_value, options);
820 case TYPE_CODE_DECFLOAT:
822 val_print_scalar_formatted (type, valaddr, embedded_offset,
823 original_value, options, 0, stream);
825 print_decimal_floating (valaddr + embedded_offset,
830 fputs_filtered (decorations->void_name, stream);
833 case TYPE_CODE_ERROR:
834 fprintf_filtered (stream, "%s", TYPE_ERROR_NAME (type));
837 case TYPE_CODE_UNDEF:
838 /* This happens (without TYPE_FLAG_STUB set) on systems which
839 don't use dbx xrefs (NO_DBX_XREFS in gcc) if a file has a
840 "struct foo *bar" and no complete type for struct foo in that
842 fprintf_filtered (stream, _("<incomplete type>"));
845 case TYPE_CODE_COMPLEX:
846 fprintf_filtered (stream, "%s", decorations->complex_prefix);
848 val_print_scalar_formatted (TYPE_TARGET_TYPE (type),
849 valaddr, embedded_offset,
850 original_value, options, 0, stream);
852 print_floating (valaddr + embedded_offset,
853 TYPE_TARGET_TYPE (type),
855 fprintf_filtered (stream, "%s", decorations->complex_infix);
857 val_print_scalar_formatted (TYPE_TARGET_TYPE (type),
860 + TYPE_LENGTH (TYPE_TARGET_TYPE (type)),
864 print_floating (valaddr + embedded_offset
865 + TYPE_LENGTH (TYPE_TARGET_TYPE (type)),
866 TYPE_TARGET_TYPE (type),
868 fprintf_filtered (stream, "%s", decorations->complex_suffix);
871 case TYPE_CODE_UNION:
872 case TYPE_CODE_STRUCT:
873 case TYPE_CODE_METHODPTR:
875 error (_("Unhandled type code %d in symbol table."),
881 /* Print using the given LANGUAGE the data of type TYPE located at
882 VALADDR + EMBEDDED_OFFSET (within GDB), which came from the
883 inferior at address ADDRESS + EMBEDDED_OFFSET, onto stdio stream
884 STREAM according to OPTIONS. VAL is the whole object that came
885 from ADDRESS. VALADDR must point to the head of VAL's contents
888 The language printers will pass down an adjusted EMBEDDED_OFFSET to
889 further helper subroutines as subfields of TYPE are printed. In
890 such cases, VALADDR is passed down unadjusted, as well as VAL, so
891 that VAL can be queried for metadata about the contents data being
892 printed, using EMBEDDED_OFFSET as an offset into VAL's contents
893 buffer. For example: "has this field been optimized out", or "I'm
894 printing an object while inspecting a traceframe; has this
895 particular piece of data been collected?".
897 RECURSE indicates the amount of indentation to supply before
898 continuation lines; this amount is roughly twice the value of
902 val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset,
903 CORE_ADDR address, struct ui_file *stream, int recurse,
904 const struct value *val,
905 const struct value_print_options *options,
906 const struct language_defn *language)
909 struct value_print_options local_opts = *options;
910 struct type *real_type = check_typedef (type);
912 if (local_opts.prettyformat == Val_prettyformat_default)
913 local_opts.prettyformat = (local_opts.prettyformat_structs
914 ? Val_prettyformat : Val_no_prettyformat);
918 /* Ensure that the type is complete and not just a stub. If the type is
919 only a stub and we can't find and substitute its complete type, then
920 print appropriate string and return. */
922 if (TYPE_STUB (real_type))
924 fprintf_filtered (stream, _("<incomplete type>"));
929 if (!valprint_check_validity (stream, real_type, embedded_offset, val))
934 ret = apply_ext_lang_val_pretty_printer (type, valaddr, embedded_offset,
935 address, stream, recurse,
936 val, options, language);
941 /* Handle summary mode. If the value is a scalar, print it;
942 otherwise, print an ellipsis. */
943 if (options->summary && !val_print_scalar_type_p (type))
945 fprintf_filtered (stream, "...");
951 language->la_val_print (type, valaddr, embedded_offset, address,
952 stream, recurse, val,
955 CATCH (except, RETURN_MASK_ERROR)
957 fprintf_filtered (stream, _("<error reading variable>"));
962 /* Check whether the value VAL is printable. Return 1 if it is;
963 return 0 and print an appropriate error message to STREAM according to
964 OPTIONS if it is not. */
967 value_check_printable (struct value *val, struct ui_file *stream,
968 const struct value_print_options *options)
972 fprintf_filtered (stream, _("<address of value unknown>"));
976 if (value_entirely_optimized_out (val))
978 if (options->summary && !val_print_scalar_type_p (value_type (val)))
979 fprintf_filtered (stream, "...");
981 val_print_optimized_out (val, stream);
985 if (value_entirely_unavailable (val))
987 if (options->summary && !val_print_scalar_type_p (value_type (val)))
988 fprintf_filtered (stream, "...");
990 val_print_unavailable (stream);
994 if (TYPE_CODE (value_type (val)) == TYPE_CODE_INTERNAL_FUNCTION)
996 fprintf_filtered (stream, _("<internal function %s>"),
997 value_internal_function_name (val));
1004 /* Print using the given LANGUAGE the value VAL onto stream STREAM according
1007 This is a preferable interface to val_print, above, because it uses
1008 GDB's value mechanism. */
1011 common_val_print (struct value *val, struct ui_file *stream, int recurse,
1012 const struct value_print_options *options,
1013 const struct language_defn *language)
1015 if (!value_check_printable (val, stream, options))
1018 if (language->la_language == language_ada)
1019 /* The value might have a dynamic type, which would cause trouble
1020 below when trying to extract the value contents (since the value
1021 size is determined from the type size which is unknown). So
1022 get a fixed representation of our value. */
1023 val = ada_to_fixed_value (val);
1025 val_print (value_type (val), value_contents_for_printing (val),
1026 value_embedded_offset (val), value_address (val),
1028 val, options, language);
1031 /* Print on stream STREAM the value VAL according to OPTIONS. The value
1032 is printed using the current_language syntax. */
1035 value_print (struct value *val, struct ui_file *stream,
1036 const struct value_print_options *options)
1038 if (!value_check_printable (val, stream, options))
1044 = apply_ext_lang_val_pretty_printer (value_type (val),
1045 value_contents_for_printing (val),
1046 value_embedded_offset (val),
1047 value_address (val),
1049 val, options, current_language);
1055 LA_VALUE_PRINT (val, stream, options);
1058 /* Called by various <lang>_val_print routines to print
1059 TYPE_CODE_INT's. TYPE is the type. VALADDR is the address of the
1060 value. STREAM is where to print the value. */
1063 val_print_type_code_int (struct type *type, const gdb_byte *valaddr,
1064 struct ui_file *stream)
1066 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
1068 if (TYPE_LENGTH (type) > sizeof (LONGEST))
1072 if (TYPE_UNSIGNED (type)
1073 && extract_long_unsigned_integer (valaddr, TYPE_LENGTH (type),
1076 print_longest (stream, 'u', 0, val);
1080 /* Signed, or we couldn't turn an unsigned value into a
1081 LONGEST. For signed values, one could assume two's
1082 complement (a reasonable assumption, I think) and do
1083 better than this. */
1084 print_hex_chars (stream, (unsigned char *) valaddr,
1085 TYPE_LENGTH (type), byte_order);
1090 print_longest (stream, TYPE_UNSIGNED (type) ? 'u' : 'd', 0,
1091 unpack_long (type, valaddr));
1096 val_print_type_code_flags (struct type *type, const gdb_byte *valaddr,
1097 struct ui_file *stream)
1099 ULONGEST val = unpack_long (type, valaddr);
1100 int bitpos, nfields = TYPE_NFIELDS (type);
1102 fputs_filtered ("[ ", stream);
1103 for (bitpos = 0; bitpos < nfields; bitpos++)
1105 if (TYPE_FIELD_BITPOS (type, bitpos) != -1
1106 && (val & ((ULONGEST)1 << bitpos)))
1108 if (TYPE_FIELD_NAME (type, bitpos))
1109 fprintf_filtered (stream, "%s ", TYPE_FIELD_NAME (type, bitpos));
1111 fprintf_filtered (stream, "#%d ", bitpos);
1114 fputs_filtered ("]", stream);
1117 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
1118 according to OPTIONS and SIZE on STREAM. Format i is not supported
1121 This is how the elements of an array or structure are printed
1125 val_print_scalar_formatted (struct type *type,
1126 const gdb_byte *valaddr, int embedded_offset,
1127 const struct value *val,
1128 const struct value_print_options *options,
1130 struct ui_file *stream)
1132 gdb_assert (val != NULL);
1133 gdb_assert (valaddr == value_contents_for_printing_const (val));
1135 /* If we get here with a string format, try again without it. Go
1136 all the way back to the language printers, which may call us
1138 if (options->format == 's')
1140 struct value_print_options opts = *options;
1143 val_print (type, valaddr, embedded_offset, 0, stream, 0, val, &opts,
1148 /* A scalar object that does not have all bits available can't be
1149 printed, because all bits contribute to its representation. */
1150 if (value_bits_any_optimized_out (val,
1151 TARGET_CHAR_BIT * embedded_offset,
1152 TARGET_CHAR_BIT * TYPE_LENGTH (type)))
1153 val_print_optimized_out (val, stream);
1154 else if (!value_bytes_available (val, embedded_offset, TYPE_LENGTH (type)))
1155 val_print_unavailable (stream);
1157 print_scalar_formatted (valaddr + embedded_offset, type,
1158 options, size, stream);
1161 /* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g.
1162 The raison d'etre of this function is to consolidate printing of
1163 LONG_LONG's into this one function. The format chars b,h,w,g are
1164 from print_scalar_formatted(). Numbers are printed using C
1167 USE_C_FORMAT means to use C format in all cases. Without it,
1168 'o' and 'x' format do not include the standard C radix prefix
1171 Hilfinger/2004-09-09: USE_C_FORMAT was originally called USE_LOCAL
1172 and was intended to request formating according to the current
1173 language and would be used for most integers that GDB prints. The
1174 exceptional cases were things like protocols where the format of
1175 the integer is a protocol thing, not a user-visible thing). The
1176 parameter remains to preserve the information of what things might
1177 be printed with language-specific format, should we ever resurrect
1181 print_longest (struct ui_file *stream, int format, int use_c_format,
1189 val = int_string (val_long, 10, 1, 0, 1); break;
1191 val = int_string (val_long, 10, 0, 0, 1); break;
1193 val = int_string (val_long, 16, 0, 0, use_c_format); break;
1195 val = int_string (val_long, 16, 0, 2, 1); break;
1197 val = int_string (val_long, 16, 0, 4, 1); break;
1199 val = int_string (val_long, 16, 0, 8, 1); break;
1201 val = int_string (val_long, 16, 0, 16, 1); break;
1204 val = int_string (val_long, 8, 0, 0, use_c_format); break;
1206 internal_error (__FILE__, __LINE__,
1207 _("failed internal consistency check"));
1209 fputs_filtered (val, stream);
1212 /* This used to be a macro, but I don't think it is called often enough
1213 to merit such treatment. */
1214 /* Convert a LONGEST to an int. This is used in contexts (e.g. number of
1215 arguments to a function, number in a value history, register number, etc.)
1216 where the value must not be larger than can fit in an int. */
1219 longest_to_int (LONGEST arg)
1221 /* Let the compiler do the work. */
1222 int rtnval = (int) arg;
1224 /* Check for overflows or underflows. */
1225 if (sizeof (LONGEST) > sizeof (int))
1229 error (_("Value out of range."));
1235 /* Print a floating point value of type TYPE (not always a
1236 TYPE_CODE_FLT), pointed to in GDB by VALADDR, on STREAM. */
1239 print_floating (const gdb_byte *valaddr, struct type *type,
1240 struct ui_file *stream)
1244 const struct floatformat *fmt = NULL;
1245 unsigned len = TYPE_LENGTH (type);
1246 enum float_kind kind;
1248 /* If it is a floating-point, check for obvious problems. */
1249 if (TYPE_CODE (type) == TYPE_CODE_FLT)
1250 fmt = floatformat_from_type (type);
1253 kind = floatformat_classify (fmt, valaddr);
1254 if (kind == float_nan)
1256 if (floatformat_is_negative (fmt, valaddr))
1257 fprintf_filtered (stream, "-");
1258 fprintf_filtered (stream, "nan(");
1259 fputs_filtered ("0x", stream);
1260 fputs_filtered (floatformat_mantissa (fmt, valaddr), stream);
1261 fprintf_filtered (stream, ")");
1264 else if (kind == float_infinite)
1266 if (floatformat_is_negative (fmt, valaddr))
1267 fputs_filtered ("-", stream);
1268 fputs_filtered ("inf", stream);
1273 /* NOTE: cagney/2002-01-15: The TYPE passed into print_floating()
1274 isn't necessarily a TYPE_CODE_FLT. Consequently, unpack_double
1275 needs to be used as that takes care of any necessary type
1276 conversions. Such conversions are of course direct to DOUBLEST
1277 and disregard any possible target floating point limitations.
1278 For instance, a u64 would be converted and displayed exactly on a
1279 host with 80 bit DOUBLEST but with loss of information on a host
1280 with 64 bit DOUBLEST. */
1282 doub = unpack_double (type, valaddr, &inv);
1285 fprintf_filtered (stream, "<invalid float value>");
1289 /* FIXME: kettenis/2001-01-20: The following code makes too much
1290 assumptions about the host and target floating point format. */
1292 /* NOTE: cagney/2002-02-03: Since the TYPE of what was passed in may
1293 not necessarily be a TYPE_CODE_FLT, the below ignores that and
1294 instead uses the type's length to determine the precision of the
1295 floating-point value being printed. */
1297 if (len < sizeof (double))
1298 fprintf_filtered (stream, "%.9g", (double) doub);
1299 else if (len == sizeof (double))
1300 fprintf_filtered (stream, "%.17g", (double) doub);
1302 #ifdef PRINTF_HAS_LONG_DOUBLE
1303 fprintf_filtered (stream, "%.35Lg", doub);
1305 /* This at least wins with values that are representable as
1307 fprintf_filtered (stream, "%.17g", (double) doub);
1312 print_decimal_floating (const gdb_byte *valaddr, struct type *type,
1313 struct ui_file *stream)
1315 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
1316 char decstr[MAX_DECIMAL_STRING];
1317 unsigned len = TYPE_LENGTH (type);
1319 decimal_to_string (valaddr, len, byte_order, decstr);
1320 fputs_filtered (decstr, stream);
1325 print_binary_chars (struct ui_file *stream, const gdb_byte *valaddr,
1326 unsigned len, enum bfd_endian byte_order)
1329 #define BITS_IN_BYTES 8
1335 /* Declared "int" so it will be signed.
1336 This ensures that right shift will shift in zeros. */
1338 const int mask = 0x080;
1340 /* FIXME: We should be not printing leading zeroes in most cases. */
1342 if (byte_order == BFD_ENDIAN_BIG)
1348 /* Every byte has 8 binary characters; peel off
1349 and print from the MSB end. */
1351 for (i = 0; i < (BITS_IN_BYTES * sizeof (*p)); i++)
1353 if (*p & (mask >> i))
1358 fprintf_filtered (stream, "%1d", b);
1364 for (p = valaddr + len - 1;
1368 for (i = 0; i < (BITS_IN_BYTES * sizeof (*p)); i++)
1370 if (*p & (mask >> i))
1375 fprintf_filtered (stream, "%1d", b);
1381 /* VALADDR points to an integer of LEN bytes.
1382 Print it in octal on stream or format it in buf. */
1385 print_octal_chars (struct ui_file *stream, const gdb_byte *valaddr,
1386 unsigned len, enum bfd_endian byte_order)
1389 unsigned char octa1, octa2, octa3, carry;
1392 /* FIXME: We should be not printing leading zeroes in most cases. */
1395 /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track
1396 * the extra bits, which cycle every three bytes:
1398 * Byte side: 0 1 2 3
1400 * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 |
1402 * Octal side: 0 1 carry 3 4 carry ...
1404 * Cycle number: 0 1 2
1406 * But of course we are printing from the high side, so we have to
1407 * figure out where in the cycle we are so that we end up with no
1408 * left over bits at the end.
1410 #define BITS_IN_OCTAL 3
1411 #define HIGH_ZERO 0340
1412 #define LOW_ZERO 0016
1413 #define CARRY_ZERO 0003
1414 #define HIGH_ONE 0200
1415 #define MID_ONE 0160
1416 #define LOW_ONE 0016
1417 #define CARRY_ONE 0001
1418 #define HIGH_TWO 0300
1419 #define MID_TWO 0070
1420 #define LOW_TWO 0007
1422 /* For 32 we start in cycle 2, with two bits and one bit carry;
1423 for 64 in cycle in cycle 1, with one bit and a two bit carry. */
1425 cycle = (len * BITS_IN_BYTES) % BITS_IN_OCTAL;
1428 fputs_filtered ("0", stream);
1429 if (byte_order == BFD_ENDIAN_BIG)
1438 /* No carry in, carry out two bits. */
1440 octa1 = (HIGH_ZERO & *p) >> 5;
1441 octa2 = (LOW_ZERO & *p) >> 2;
1442 carry = (CARRY_ZERO & *p);
1443 fprintf_filtered (stream, "%o", octa1);
1444 fprintf_filtered (stream, "%o", octa2);
1448 /* Carry in two bits, carry out one bit. */
1450 octa1 = (carry << 1) | ((HIGH_ONE & *p) >> 7);
1451 octa2 = (MID_ONE & *p) >> 4;
1452 octa3 = (LOW_ONE & *p) >> 1;
1453 carry = (CARRY_ONE & *p);
1454 fprintf_filtered (stream, "%o", octa1);
1455 fprintf_filtered (stream, "%o", octa2);
1456 fprintf_filtered (stream, "%o", octa3);
1460 /* Carry in one bit, no carry out. */
1462 octa1 = (carry << 2) | ((HIGH_TWO & *p) >> 6);
1463 octa2 = (MID_TWO & *p) >> 3;
1464 octa3 = (LOW_TWO & *p);
1466 fprintf_filtered (stream, "%o", octa1);
1467 fprintf_filtered (stream, "%o", octa2);
1468 fprintf_filtered (stream, "%o", octa3);
1472 error (_("Internal error in octal conversion;"));
1476 cycle = cycle % BITS_IN_OCTAL;
1481 for (p = valaddr + len - 1;
1488 /* Carry out, no carry in */
1490 octa1 = (HIGH_ZERO & *p) >> 5;
1491 octa2 = (LOW_ZERO & *p) >> 2;
1492 carry = (CARRY_ZERO & *p);
1493 fprintf_filtered (stream, "%o", octa1);
1494 fprintf_filtered (stream, "%o", octa2);
1498 /* Carry in, carry out */
1500 octa1 = (carry << 1) | ((HIGH_ONE & *p) >> 7);
1501 octa2 = (MID_ONE & *p) >> 4;
1502 octa3 = (LOW_ONE & *p) >> 1;
1503 carry = (CARRY_ONE & *p);
1504 fprintf_filtered (stream, "%o", octa1);
1505 fprintf_filtered (stream, "%o", octa2);
1506 fprintf_filtered (stream, "%o", octa3);
1510 /* Carry in, no carry out */
1512 octa1 = (carry << 2) | ((HIGH_TWO & *p) >> 6);
1513 octa2 = (MID_TWO & *p) >> 3;
1514 octa3 = (LOW_TWO & *p);
1516 fprintf_filtered (stream, "%o", octa1);
1517 fprintf_filtered (stream, "%o", octa2);
1518 fprintf_filtered (stream, "%o", octa3);
1522 error (_("Internal error in octal conversion;"));
1526 cycle = cycle % BITS_IN_OCTAL;
1532 /* VALADDR points to an integer of LEN bytes.
1533 Print it in decimal on stream or format it in buf. */
1536 print_decimal_chars (struct ui_file *stream, const gdb_byte *valaddr,
1537 unsigned len, enum bfd_endian byte_order)
1540 #define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */
1541 #define CARRY_LEFT( x ) ((x) % TEN)
1542 #define SHIFT( x ) ((x) << 4)
1543 #define LOW_NIBBLE( x ) ( (x) & 0x00F)
1544 #define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4)
1547 unsigned char *digits;
1550 int i, j, decimal_digits;
1554 /* Base-ten number is less than twice as many digits
1555 as the base 16 number, which is 2 digits per byte. */
1557 decimal_len = len * 2 * 2;
1558 digits = xmalloc (decimal_len);
1560 for (i = 0; i < decimal_len; i++)
1565 /* Ok, we have an unknown number of bytes of data to be printed in
1568 * Given a hex number (in nibbles) as XYZ, we start by taking X and
1569 * decemalizing it as "x1 x2" in two decimal nibbles. Then we multiply
1570 * the nibbles by 16, add Y and re-decimalize. Repeat with Z.
1572 * The trick is that "digits" holds a base-10 number, but sometimes
1573 * the individual digits are > 10.
1575 * Outer loop is per nibble (hex digit) of input, from MSD end to
1578 decimal_digits = 0; /* Number of decimal digits so far */
1579 p = (byte_order == BFD_ENDIAN_BIG) ? valaddr : valaddr + len - 1;
1581 while ((byte_order == BFD_ENDIAN_BIG) ? (p < valaddr + len) : (p >= valaddr))
1584 * Multiply current base-ten number by 16 in place.
1585 * Each digit was between 0 and 9, now is between
1588 for (j = 0; j < decimal_digits; j++)
1590 digits[j] = SHIFT (digits[j]);
1593 /* Take the next nibble off the input and add it to what
1594 * we've got in the LSB position. Bottom 'digit' is now
1595 * between 0 and 159.
1597 * "flip" is used to run this loop twice for each byte.
1601 /* Take top nibble. */
1603 digits[0] += HIGH_NIBBLE (*p);
1608 /* Take low nibble and bump our pointer "p". */
1610 digits[0] += LOW_NIBBLE (*p);
1611 if (byte_order == BFD_ENDIAN_BIG)
1618 /* Re-decimalize. We have to do this often enough
1619 * that we don't overflow, but once per nibble is
1620 * overkill. Easier this way, though. Note that the
1621 * carry is often larger than 10 (e.g. max initial
1622 * carry out of lowest nibble is 15, could bubble all
1623 * the way up greater than 10). So we have to do
1624 * the carrying beyond the last current digit.
1627 for (j = 0; j < decimal_len - 1; j++)
1631 /* "/" won't handle an unsigned char with
1632 * a value that if signed would be negative.
1633 * So extend to longword int via "dummy".
1636 carry = CARRY_OUT (dummy);
1637 digits[j] = CARRY_LEFT (dummy);
1639 if (j >= decimal_digits && carry == 0)
1642 * All higher digits are 0 and we
1643 * no longer have a carry.
1645 * Note: "j" is 0-based, "decimal_digits" is
1648 decimal_digits = j + 1;
1654 /* Ok, now "digits" is the decimal representation, with
1655 the "decimal_digits" actual digits. Print! */
1657 for (i = decimal_digits - 1; i >= 0; i--)
1659 fprintf_filtered (stream, "%1d", digits[i]);
1664 /* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */
1667 print_hex_chars (struct ui_file *stream, const gdb_byte *valaddr,
1668 unsigned len, enum bfd_endian byte_order)
1672 /* FIXME: We should be not printing leading zeroes in most cases. */
1674 fputs_filtered ("0x", stream);
1675 if (byte_order == BFD_ENDIAN_BIG)
1681 fprintf_filtered (stream, "%02x", *p);
1686 for (p = valaddr + len - 1;
1690 fprintf_filtered (stream, "%02x", *p);
1695 /* VALADDR points to a char integer of LEN bytes.
1696 Print it out in appropriate language form on stream.
1697 Omit any leading zero chars. */
1700 print_char_chars (struct ui_file *stream, struct type *type,
1701 const gdb_byte *valaddr,
1702 unsigned len, enum bfd_endian byte_order)
1706 if (byte_order == BFD_ENDIAN_BIG)
1709 while (p < valaddr + len - 1 && *p == 0)
1712 while (p < valaddr + len)
1714 LA_EMIT_CHAR (*p, type, stream, '\'');
1720 p = valaddr + len - 1;
1721 while (p > valaddr && *p == 0)
1724 while (p >= valaddr)
1726 LA_EMIT_CHAR (*p, type, stream, '\'');
1732 /* Print function pointer with inferior address ADDRESS onto stdio
1736 print_function_pointer_address (const struct value_print_options *options,
1737 struct gdbarch *gdbarch,
1739 struct ui_file *stream)
1742 = gdbarch_convert_from_func_ptr_addr (gdbarch, address,
1745 /* If the function pointer is represented by a description, print
1746 the address of the description. */
1747 if (options->addressprint && func_addr != address)
1749 fputs_filtered ("@", stream);
1750 fputs_filtered (paddress (gdbarch, address), stream);
1751 fputs_filtered (": ", stream);
1753 print_address_demangle (options, gdbarch, func_addr, stream, demangle);
1757 /* Print on STREAM using the given OPTIONS the index for the element
1758 at INDEX of an array whose index type is INDEX_TYPE. */
1761 maybe_print_array_index (struct type *index_type, LONGEST index,
1762 struct ui_file *stream,
1763 const struct value_print_options *options)
1765 struct value *index_value;
1767 if (!options->print_array_indexes)
1770 index_value = value_from_longest (index_type, index);
1772 LA_PRINT_ARRAY_INDEX (index_value, stream, options);
1775 /* Called by various <lang>_val_print routines to print elements of an
1776 array in the form "<elem1>, <elem2>, <elem3>, ...".
1778 (FIXME?) Assumes array element separator is a comma, which is correct
1779 for all languages currently handled.
1780 (FIXME?) Some languages have a notation for repeated array elements,
1781 perhaps we should try to use that notation when appropriate. */
1784 val_print_array_elements (struct type *type,
1785 const gdb_byte *valaddr, int embedded_offset,
1786 CORE_ADDR address, struct ui_file *stream,
1788 const struct value *val,
1789 const struct value_print_options *options,
1792 unsigned int things_printed = 0;
1794 struct type *elttype, *index_type, *base_index_type;
1796 /* Position of the array element we are examining to see
1797 whether it is repeated. */
1799 /* Number of repetitions we have detected so far. */
1801 LONGEST low_bound, high_bound;
1802 LONGEST low_pos, high_pos;
1804 elttype = TYPE_TARGET_TYPE (type);
1805 eltlen = TYPE_LENGTH (check_typedef (elttype));
1806 index_type = TYPE_INDEX_TYPE (type);
1808 if (get_array_bounds (type, &low_bound, &high_bound))
1810 if (TYPE_CODE (index_type) == TYPE_CODE_RANGE)
1811 base_index_type = TYPE_TARGET_TYPE (index_type);
1813 base_index_type = index_type;
1815 /* Non-contiguous enumerations types can by used as index types
1816 in some languages (e.g. Ada). In this case, the array length
1817 shall be computed from the positions of the first and last
1818 literal in the enumeration type, and not from the values
1819 of these literals. */
1820 if (!discrete_position (base_index_type, low_bound, &low_pos)
1821 || !discrete_position (base_index_type, high_bound, &high_pos))
1823 warning (_("unable to get positions in array, use bounds instead"));
1824 low_pos = low_bound;
1825 high_pos = high_bound;
1828 /* The array length should normally be HIGH_POS - LOW_POS + 1.
1829 But we have to be a little extra careful, because some languages
1830 such as Ada allow LOW_POS to be greater than HIGH_POS for
1831 empty arrays. In that situation, the array length is just zero,
1833 if (low_pos > high_pos)
1836 len = high_pos - low_pos + 1;
1840 warning (_("unable to get bounds of array, assuming null array"));
1845 annotate_array_section_begin (i, elttype);
1847 for (; i < len && things_printed < options->print_max; i++)
1851 if (options->prettyformat_arrays)
1853 fprintf_filtered (stream, ",\n");
1854 print_spaces_filtered (2 + 2 * recurse, stream);
1858 fprintf_filtered (stream, ", ");
1861 wrap_here (n_spaces (2 + 2 * recurse));
1862 maybe_print_array_index (index_type, i + low_bound,
1867 /* Only check for reps if repeat_count_threshold is not set to
1868 UINT_MAX (unlimited). */
1869 if (options->repeat_count_threshold < UINT_MAX)
1872 && value_contents_eq (val,
1873 embedded_offset + i * eltlen,
1884 if (reps > options->repeat_count_threshold)
1886 val_print (elttype, valaddr, embedded_offset + i * eltlen,
1887 address, stream, recurse + 1, val, options,
1889 annotate_elt_rep (reps);
1890 fprintf_filtered (stream, " <repeats %u times>", reps);
1891 annotate_elt_rep_end ();
1894 things_printed += options->repeat_count_threshold;
1898 val_print (elttype, valaddr, embedded_offset + i * eltlen,
1900 stream, recurse + 1, val, options, current_language);
1905 annotate_array_section_end ();
1908 fprintf_filtered (stream, "...");
1912 /* Read LEN bytes of target memory at address MEMADDR, placing the
1913 results in GDB's memory at MYADDR. Returns a count of the bytes
1914 actually read, and optionally a target_xfer_status value in the
1915 location pointed to by ERRPTR if ERRPTR is non-null. */
1917 /* FIXME: cagney/1999-10-14: Only used by val_print_string. Can this
1918 function be eliminated. */
1921 partial_memory_read (CORE_ADDR memaddr, gdb_byte *myaddr,
1922 int len, int *errptr)
1924 int nread; /* Number of bytes actually read. */
1925 int errcode; /* Error from last read. */
1927 /* First try a complete read. */
1928 errcode = target_read_memory (memaddr, myaddr, len);
1936 /* Loop, reading one byte at a time until we get as much as we can. */
1937 for (errcode = 0, nread = 0; len > 0 && errcode == 0; nread++, len--)
1939 errcode = target_read_memory (memaddr++, myaddr++, 1);
1941 /* If an error, the last read was unsuccessful, so adjust count. */
1954 /* Read a string from the inferior, at ADDR, with LEN characters of WIDTH bytes
1955 each. Fetch at most FETCHLIMIT characters. BUFFER will be set to a newly
1956 allocated buffer containing the string, which the caller is responsible to
1957 free, and BYTES_READ will be set to the number of bytes read. Returns 0 on
1958 success, or a target_xfer_status on failure.
1960 If LEN > 0, reads the lesser of LEN or FETCHLIMIT characters
1961 (including eventual NULs in the middle or end of the string).
1963 If LEN is -1, stops at the first null character (not necessarily
1964 the first null byte) up to a maximum of FETCHLIMIT characters. Set
1965 FETCHLIMIT to UINT_MAX to read as many characters as possible from
1968 Unless an exception is thrown, BUFFER will always be allocated, even on
1969 failure. In this case, some characters might have been read before the
1970 failure happened. Check BYTES_READ to recognize this situation.
1972 Note: There was a FIXME asking to make this code use target_read_string,
1973 but this function is more general (can read past null characters, up to
1974 given LEN). Besides, it is used much more often than target_read_string
1975 so it is more tested. Perhaps callers of target_read_string should use
1976 this function instead? */
1979 read_string (CORE_ADDR addr, int len, int width, unsigned int fetchlimit,
1980 enum bfd_endian byte_order, gdb_byte **buffer, int *bytes_read)
1982 int errcode; /* Errno returned from bad reads. */
1983 unsigned int nfetch; /* Chars to fetch / chars fetched. */
1984 gdb_byte *bufptr; /* Pointer to next available byte in
1986 struct cleanup *old_chain = NULL; /* Top of the old cleanup chain. */
1988 /* Loop until we either have all the characters, or we encounter
1989 some error, such as bumping into the end of the address space. */
1993 old_chain = make_cleanup (free_current_contents, buffer);
1997 /* We want fetchlimit chars, so we might as well read them all in
1999 unsigned int fetchlen = min (len, fetchlimit);
2001 *buffer = (gdb_byte *) xmalloc (fetchlen * width);
2004 nfetch = partial_memory_read (addr, bufptr, fetchlen * width, &errcode)
2006 addr += nfetch * width;
2007 bufptr += nfetch * width;
2011 unsigned long bufsize = 0;
2012 unsigned int chunksize; /* Size of each fetch, in chars. */
2013 int found_nul; /* Non-zero if we found the nul char. */
2014 gdb_byte *limit; /* First location past end of fetch buffer. */
2017 /* We are looking for a NUL terminator to end the fetching, so we
2018 might as well read in blocks that are large enough to be efficient,
2019 but not so large as to be slow if fetchlimit happens to be large.
2020 So we choose the minimum of 8 and fetchlimit. We used to use 200
2021 instead of 8 but 200 is way too big for remote debugging over a
2023 chunksize = min (8, fetchlimit);
2028 nfetch = min (chunksize, fetchlimit - bufsize);
2030 if (*buffer == NULL)
2031 *buffer = (gdb_byte *) xmalloc (nfetch * width);
2033 *buffer = (gdb_byte *) xrealloc (*buffer,
2034 (nfetch + bufsize) * width);
2036 bufptr = *buffer + bufsize * width;
2039 /* Read as much as we can. */
2040 nfetch = partial_memory_read (addr, bufptr, nfetch * width, &errcode)
2043 /* Scan this chunk for the null character that terminates the string
2044 to print. If found, we don't need to fetch any more. Note
2045 that bufptr is explicitly left pointing at the next character
2046 after the null character, or at the next character after the end
2049 limit = bufptr + nfetch * width;
2050 while (bufptr < limit)
2054 c = extract_unsigned_integer (bufptr, width, byte_order);
2059 /* We don't care about any error which happened after
2060 the NUL terminator. */
2067 while (errcode == 0 /* no error */
2068 && bufptr - *buffer < fetchlimit * width /* no overrun */
2069 && !found_nul); /* haven't found NUL yet */
2072 { /* Length of string is really 0! */
2073 /* We always allocate *buffer. */
2074 *buffer = bufptr = xmalloc (1);
2078 /* bufptr and addr now point immediately beyond the last byte which we
2079 consider part of the string (including a '\0' which ends the string). */
2080 *bytes_read = bufptr - *buffer;
2084 discard_cleanups (old_chain);
2089 /* Return true if print_wchar can display W without resorting to a
2090 numeric escape, false otherwise. */
2093 wchar_printable (gdb_wchar_t w)
2095 return (gdb_iswprint (w)
2096 || w == LCST ('\a') || w == LCST ('\b')
2097 || w == LCST ('\f') || w == LCST ('\n')
2098 || w == LCST ('\r') || w == LCST ('\t')
2099 || w == LCST ('\v'));
2102 /* A helper function that converts the contents of STRING to wide
2103 characters and then appends them to OUTPUT. */
2106 append_string_as_wide (const char *string,
2107 struct obstack *output)
2109 for (; *string; ++string)
2111 gdb_wchar_t w = gdb_btowc (*string);
2112 obstack_grow (output, &w, sizeof (gdb_wchar_t));
2116 /* Print a wide character W to OUTPUT. ORIG is a pointer to the
2117 original (target) bytes representing the character, ORIG_LEN is the
2118 number of valid bytes. WIDTH is the number of bytes in a base
2119 characters of the type. OUTPUT is an obstack to which wide
2120 characters are emitted. QUOTER is a (narrow) character indicating
2121 the style of quotes surrounding the character to be printed.
2122 NEED_ESCAPE is an in/out flag which is used to track numeric
2123 escapes across calls. */
2126 print_wchar (gdb_wint_t w, const gdb_byte *orig,
2127 int orig_len, int width,
2128 enum bfd_endian byte_order,
2129 struct obstack *output,
2130 int quoter, int *need_escapep)
2132 int need_escape = *need_escapep;
2136 /* iswprint implementation on Windows returns 1 for tab character.
2137 In order to avoid different printout on this host, we explicitly
2138 use wchar_printable function. */
2142 obstack_grow_wstr (output, LCST ("\\a"));
2145 obstack_grow_wstr (output, LCST ("\\b"));
2148 obstack_grow_wstr (output, LCST ("\\f"));
2151 obstack_grow_wstr (output, LCST ("\\n"));
2154 obstack_grow_wstr (output, LCST ("\\r"));
2157 obstack_grow_wstr (output, LCST ("\\t"));
2160 obstack_grow_wstr (output, LCST ("\\v"));
2164 if (wchar_printable (w) && (!need_escape || (!gdb_iswdigit (w)
2166 && w != LCST ('9'))))
2168 gdb_wchar_t wchar = w;
2170 if (w == gdb_btowc (quoter) || w == LCST ('\\'))
2171 obstack_grow_wstr (output, LCST ("\\"));
2172 obstack_grow (output, &wchar, sizeof (gdb_wchar_t));
2178 for (i = 0; i + width <= orig_len; i += width)
2183 value = extract_unsigned_integer (&orig[i], width,
2185 /* If the value fits in 3 octal digits, print it that
2186 way. Otherwise, print it as a hex escape. */
2188 xsnprintf (octal, sizeof (octal), "\\%.3o",
2189 (int) (value & 0777));
2191 xsnprintf (octal, sizeof (octal), "\\x%lx", (long) value);
2192 append_string_as_wide (octal, output);
2194 /* If we somehow have extra bytes, print them now. */
2195 while (i < orig_len)
2199 xsnprintf (octal, sizeof (octal), "\\%.3o", orig[i] & 0xff);
2200 append_string_as_wide (octal, output);
2211 /* Print the character C on STREAM as part of the contents of a
2212 literal string whose delimiter is QUOTER. ENCODING names the
2216 generic_emit_char (int c, struct type *type, struct ui_file *stream,
2217 int quoter, const char *encoding)
2219 enum bfd_endian byte_order
2220 = gdbarch_byte_order (get_type_arch (type));
2221 struct obstack wchar_buf, output;
2222 struct cleanup *cleanups;
2224 struct wchar_iterator *iter;
2225 int need_escape = 0;
2227 buf = alloca (TYPE_LENGTH (type));
2228 pack_long (buf, type, c);
2230 iter = make_wchar_iterator (buf, TYPE_LENGTH (type),
2231 encoding, TYPE_LENGTH (type));
2232 cleanups = make_cleanup_wchar_iterator (iter);
2234 /* This holds the printable form of the wchar_t data. */
2235 obstack_init (&wchar_buf);
2236 make_cleanup_obstack_free (&wchar_buf);
2242 const gdb_byte *buf;
2244 int print_escape = 1;
2245 enum wchar_iterate_result result;
2247 num_chars = wchar_iterate (iter, &result, &chars, &buf, &buflen);
2252 /* If all characters are printable, print them. Otherwise,
2253 we're going to have to print an escape sequence. We
2254 check all characters because we want to print the target
2255 bytes in the escape sequence, and we don't know character
2256 boundaries there. */
2260 for (i = 0; i < num_chars; ++i)
2261 if (!wchar_printable (chars[i]))
2269 for (i = 0; i < num_chars; ++i)
2270 print_wchar (chars[i], buf, buflen,
2271 TYPE_LENGTH (type), byte_order,
2272 &wchar_buf, quoter, &need_escape);
2276 /* This handles the NUM_CHARS == 0 case as well. */
2278 print_wchar (gdb_WEOF, buf, buflen, TYPE_LENGTH (type),
2279 byte_order, &wchar_buf, quoter, &need_escape);
2282 /* The output in the host encoding. */
2283 obstack_init (&output);
2284 make_cleanup_obstack_free (&output);
2286 convert_between_encodings (INTERMEDIATE_ENCODING, host_charset (),
2287 (gdb_byte *) obstack_base (&wchar_buf),
2288 obstack_object_size (&wchar_buf),
2289 sizeof (gdb_wchar_t), &output, translit_char);
2290 obstack_1grow (&output, '\0');
2292 fputs_filtered (obstack_base (&output), stream);
2294 do_cleanups (cleanups);
2297 /* Return the repeat count of the next character/byte in ITER,
2298 storing the result in VEC. */
2301 count_next_character (struct wchar_iterator *iter,
2302 VEC (converted_character_d) **vec)
2304 struct converted_character *current;
2306 if (VEC_empty (converted_character_d, *vec))
2308 struct converted_character tmp;
2312 = wchar_iterate (iter, &tmp.result, &chars, &tmp.buf, &tmp.buflen);
2313 if (tmp.num_chars > 0)
2315 gdb_assert (tmp.num_chars < MAX_WCHARS);
2316 memcpy (tmp.chars, chars, tmp.num_chars * sizeof (gdb_wchar_t));
2318 VEC_safe_push (converted_character_d, *vec, &tmp);
2321 current = VEC_last (converted_character_d, *vec);
2323 /* Count repeated characters or bytes. */
2324 current->repeat_count = 1;
2325 if (current->num_chars == -1)
2333 struct converted_character d;
2340 /* Get the next character. */
2342 = wchar_iterate (iter, &d.result, &chars, &d.buf, &d.buflen);
2344 /* If a character was successfully converted, save the character
2345 into the converted character. */
2346 if (d.num_chars > 0)
2348 gdb_assert (d.num_chars < MAX_WCHARS);
2349 memcpy (d.chars, chars, WCHAR_BUFLEN (d.num_chars));
2352 /* Determine if the current character is the same as this
2354 if (d.num_chars == current->num_chars && d.result == current->result)
2356 /* There are two cases to consider:
2358 1) Equality of converted character (num_chars > 0)
2359 2) Equality of non-converted character (num_chars == 0) */
2360 if ((current->num_chars > 0
2361 && memcmp (current->chars, d.chars,
2362 WCHAR_BUFLEN (current->num_chars)) == 0)
2363 || (current->num_chars == 0
2364 && current->buflen == d.buflen
2365 && memcmp (current->buf, d.buf, current->buflen) == 0))
2366 ++current->repeat_count;
2374 /* Push this next converted character onto the result vector. */
2375 repeat = current->repeat_count;
2376 VEC_safe_push (converted_character_d, *vec, &d);
2381 /* Print the characters in CHARS to the OBSTACK. QUOTE_CHAR is the quote
2382 character to use with string output. WIDTH is the size of the output
2383 character type. BYTE_ORDER is the the target byte order. OPTIONS
2384 is the user's print options. */
2387 print_converted_chars_to_obstack (struct obstack *obstack,
2388 VEC (converted_character_d) *chars,
2389 int quote_char, int width,
2390 enum bfd_endian byte_order,
2391 const struct value_print_options *options)
2394 struct converted_character *elem;
2395 enum {START, SINGLE, REPEAT, INCOMPLETE, FINISH} state, last;
2396 gdb_wchar_t wide_quote_char = gdb_btowc (quote_char);
2397 int need_escape = 0;
2399 /* Set the start state. */
2401 last = state = START;
2409 /* Nothing to do. */
2416 /* We are outputting a single character
2417 (< options->repeat_count_threshold). */
2421 /* We were outputting some other type of content, so we
2422 must output and a comma and a quote. */
2424 obstack_grow_wstr (obstack, LCST (", "));
2425 obstack_grow (obstack, &wide_quote_char, sizeof (gdb_wchar_t));
2427 /* Output the character. */
2428 for (j = 0; j < elem->repeat_count; ++j)
2430 if (elem->result == wchar_iterate_ok)
2431 print_wchar (elem->chars[0], elem->buf, elem->buflen, width,
2432 byte_order, obstack, quote_char, &need_escape);
2434 print_wchar (gdb_WEOF, elem->buf, elem->buflen, width,
2435 byte_order, obstack, quote_char, &need_escape);
2445 /* We are outputting a character with a repeat count
2446 greater than options->repeat_count_threshold. */
2450 /* We were outputting a single string. Terminate the
2452 obstack_grow (obstack, &wide_quote_char, sizeof (gdb_wchar_t));
2455 obstack_grow_wstr (obstack, LCST (", "));
2457 /* Output the character and repeat string. */
2458 obstack_grow_wstr (obstack, LCST ("'"));
2459 if (elem->result == wchar_iterate_ok)
2460 print_wchar (elem->chars[0], elem->buf, elem->buflen, width,
2461 byte_order, obstack, quote_char, &need_escape);
2463 print_wchar (gdb_WEOF, elem->buf, elem->buflen, width,
2464 byte_order, obstack, quote_char, &need_escape);
2465 obstack_grow_wstr (obstack, LCST ("'"));
2466 s = xstrprintf (_(" <repeats %u times>"), elem->repeat_count);
2467 for (j = 0; s[j]; ++j)
2469 gdb_wchar_t w = gdb_btowc (s[j]);
2470 obstack_grow (obstack, &w, sizeof (gdb_wchar_t));
2477 /* We are outputting an incomplete sequence. */
2480 /* If we were outputting a string of SINGLE characters,
2481 terminate the quote. */
2482 obstack_grow (obstack, &wide_quote_char, sizeof (gdb_wchar_t));
2485 obstack_grow_wstr (obstack, LCST (", "));
2487 /* Output the incomplete sequence string. */
2488 obstack_grow_wstr (obstack, LCST ("<incomplete sequence "));
2489 print_wchar (gdb_WEOF, elem->buf, elem->buflen, width, byte_order,
2490 obstack, 0, &need_escape);
2491 obstack_grow_wstr (obstack, LCST (">"));
2493 /* We do not attempt to outupt anything after this. */
2498 /* All done. If we were outputting a string of SINGLE
2499 characters, the string must be terminated. Otherwise,
2500 REPEAT and INCOMPLETE are always left properly terminated. */
2502 obstack_grow (obstack, &wide_quote_char, sizeof (gdb_wchar_t));
2507 /* Get the next element and state. */
2509 if (state != FINISH)
2511 elem = VEC_index (converted_character_d, chars, idx++);
2512 switch (elem->result)
2514 case wchar_iterate_ok:
2515 case wchar_iterate_invalid:
2516 if (elem->repeat_count > options->repeat_count_threshold)
2522 case wchar_iterate_incomplete:
2526 case wchar_iterate_eof:
2534 /* Print the character string STRING, printing at most LENGTH
2535 characters. LENGTH is -1 if the string is nul terminated. TYPE is
2536 the type of each character. OPTIONS holds the printing options;
2537 printing stops early if the number hits print_max; repeat counts
2538 are printed as appropriate. Print ellipses at the end if we had to
2539 stop before printing LENGTH characters, or if FORCE_ELLIPSES.
2540 QUOTE_CHAR is the character to print at each end of the string. If
2541 C_STYLE_TERMINATOR is true, and the last character is 0, then it is
2545 generic_printstr (struct ui_file *stream, struct type *type,
2546 const gdb_byte *string, unsigned int length,
2547 const char *encoding, int force_ellipses,
2548 int quote_char, int c_style_terminator,
2549 const struct value_print_options *options)
2551 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
2553 int width = TYPE_LENGTH (type);
2554 struct obstack wchar_buf, output;
2555 struct cleanup *cleanup;
2556 struct wchar_iterator *iter;
2558 struct converted_character *last;
2559 VEC (converted_character_d) *converted_chars;
2563 unsigned long current_char = 1;
2565 for (i = 0; current_char; ++i)
2568 current_char = extract_unsigned_integer (string + i * width,
2574 /* If the string was not truncated due to `set print elements', and
2575 the last byte of it is a null, we don't print that, in
2576 traditional C style. */
2577 if (c_style_terminator
2580 && (extract_unsigned_integer (string + (length - 1) * width,
2581 width, byte_order) == 0))
2586 fputs_filtered ("\"\"", stream);
2590 /* Arrange to iterate over the characters, in wchar_t form. */
2591 iter = make_wchar_iterator (string, length * width, encoding, width);
2592 cleanup = make_cleanup_wchar_iterator (iter);
2593 converted_chars = NULL;
2594 make_cleanup (VEC_cleanup (converted_character_d), &converted_chars);
2596 /* Convert characters until the string is over or the maximum
2597 number of printed characters has been reached. */
2599 while (i < options->print_max)
2605 /* Grab the next character and repeat count. */
2606 r = count_next_character (iter, &converted_chars);
2608 /* If less than zero, the end of the input string was reached. */
2612 /* Otherwise, add the count to the total print count and get
2613 the next character. */
2617 /* Get the last element and determine if the entire string was
2619 last = VEC_last (converted_character_d, converted_chars);
2620 finished = (last->result == wchar_iterate_eof);
2622 /* Ensure that CONVERTED_CHARS is terminated. */
2623 last->result = wchar_iterate_eof;
2625 /* WCHAR_BUF is the obstack we use to represent the string in
2627 obstack_init (&wchar_buf);
2628 make_cleanup_obstack_free (&wchar_buf);
2630 /* Print the output string to the obstack. */
2631 print_converted_chars_to_obstack (&wchar_buf, converted_chars, quote_char,
2632 width, byte_order, options);
2634 if (force_ellipses || !finished)
2635 obstack_grow_wstr (&wchar_buf, LCST ("..."));
2637 /* OUTPUT is where we collect `char's for printing. */
2638 obstack_init (&output);
2639 make_cleanup_obstack_free (&output);
2641 convert_between_encodings (INTERMEDIATE_ENCODING, host_charset (),
2642 (gdb_byte *) obstack_base (&wchar_buf),
2643 obstack_object_size (&wchar_buf),
2644 sizeof (gdb_wchar_t), &output, translit_char);
2645 obstack_1grow (&output, '\0');
2647 fputs_filtered (obstack_base (&output), stream);
2649 do_cleanups (cleanup);
2652 /* Print a string from the inferior, starting at ADDR and printing up to LEN
2653 characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing
2654 stops at the first null byte, otherwise printing proceeds (including null
2655 bytes) until either print_max or LEN characters have been printed,
2656 whichever is smaller. ENCODING is the name of the string's
2657 encoding. It can be NULL, in which case the target encoding is
2661 val_print_string (struct type *elttype, const char *encoding,
2662 CORE_ADDR addr, int len,
2663 struct ui_file *stream,
2664 const struct value_print_options *options)
2666 int force_ellipsis = 0; /* Force ellipsis to be printed if nonzero. */
2667 int errcode; /* Errno returned from bad reads. */
2668 int found_nul; /* Non-zero if we found the nul char. */
2669 unsigned int fetchlimit; /* Maximum number of chars to print. */
2671 gdb_byte *buffer = NULL; /* Dynamically growable fetch buffer. */
2672 struct cleanup *old_chain = NULL; /* Top of the old cleanup chain. */
2673 struct gdbarch *gdbarch = get_type_arch (elttype);
2674 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
2675 int width = TYPE_LENGTH (elttype);
2677 /* First we need to figure out the limit on the number of characters we are
2678 going to attempt to fetch and print. This is actually pretty simple. If
2679 LEN >= zero, then the limit is the minimum of LEN and print_max. If
2680 LEN is -1, then the limit is print_max. This is true regardless of
2681 whether print_max is zero, UINT_MAX (unlimited), or something in between,
2682 because finding the null byte (or available memory) is what actually
2683 limits the fetch. */
2685 fetchlimit = (len == -1 ? options->print_max : min (len,
2686 options->print_max));
2688 errcode = read_string (addr, len, width, fetchlimit, byte_order,
2689 &buffer, &bytes_read);
2690 old_chain = make_cleanup (xfree, buffer);
2694 /* We now have either successfully filled the buffer to fetchlimit,
2695 or terminated early due to an error or finding a null char when
2698 /* Determine found_nul by looking at the last character read. */
2700 if (bytes_read >= width)
2701 found_nul = extract_unsigned_integer (buffer + bytes_read - width, width,
2703 if (len == -1 && !found_nul)
2707 /* We didn't find a NUL terminator we were looking for. Attempt
2708 to peek at the next character. If not successful, or it is not
2709 a null byte, then force ellipsis to be printed. */
2711 peekbuf = (gdb_byte *) alloca (width);
2713 if (target_read_memory (addr, peekbuf, width) == 0
2714 && extract_unsigned_integer (peekbuf, width, byte_order) != 0)
2717 else if ((len >= 0 && errcode != 0) || (len > bytes_read / width))
2719 /* Getting an error when we have a requested length, or fetching less
2720 than the number of characters actually requested, always make us
2725 /* If we get an error before fetching anything, don't print a string.
2726 But if we fetch something and then get an error, print the string
2727 and then the error message. */
2728 if (errcode == 0 || bytes_read > 0)
2730 LA_PRINT_STRING (stream, elttype, buffer, bytes_read / width,
2731 encoding, force_ellipsis, options);
2738 str = memory_error_message (errcode, gdbarch, addr);
2739 make_cleanup (xfree, str);
2741 fprintf_filtered (stream, "<error: ");
2742 fputs_filtered (str, stream);
2743 fprintf_filtered (stream, ">");
2747 do_cleanups (old_chain);
2749 return (bytes_read / width);
2753 /* The 'set input-radix' command writes to this auxiliary variable.
2754 If the requested radix is valid, INPUT_RADIX is updated; otherwise,
2755 it is left unchanged. */
2757 static unsigned input_radix_1 = 10;
2759 /* Validate an input or output radix setting, and make sure the user
2760 knows what they really did here. Radix setting is confusing, e.g.
2761 setting the input radix to "10" never changes it! */
2764 set_input_radix (char *args, int from_tty, struct cmd_list_element *c)
2766 set_input_radix_1 (from_tty, input_radix_1);
2770 set_input_radix_1 (int from_tty, unsigned radix)
2772 /* We don't currently disallow any input radix except 0 or 1, which don't
2773 make any mathematical sense. In theory, we can deal with any input
2774 radix greater than 1, even if we don't have unique digits for every
2775 value from 0 to radix-1, but in practice we lose on large radix values.
2776 We should either fix the lossage or restrict the radix range more.
2781 input_radix_1 = input_radix;
2782 error (_("Nonsense input radix ``decimal %u''; input radix unchanged."),
2785 input_radix_1 = input_radix = radix;
2788 printf_filtered (_("Input radix now set to "
2789 "decimal %u, hex %x, octal %o.\n"),
2790 radix, radix, radix);
2794 /* The 'set output-radix' command writes to this auxiliary variable.
2795 If the requested radix is valid, OUTPUT_RADIX is updated,
2796 otherwise, it is left unchanged. */
2798 static unsigned output_radix_1 = 10;
2801 set_output_radix (char *args, int from_tty, struct cmd_list_element *c)
2803 set_output_radix_1 (from_tty, output_radix_1);
2807 set_output_radix_1 (int from_tty, unsigned radix)
2809 /* Validate the radix and disallow ones that we aren't prepared to
2810 handle correctly, leaving the radix unchanged. */
2814 user_print_options.output_format = 'x'; /* hex */
2817 user_print_options.output_format = 0; /* decimal */
2820 user_print_options.output_format = 'o'; /* octal */
2823 output_radix_1 = output_radix;
2824 error (_("Unsupported output radix ``decimal %u''; "
2825 "output radix unchanged."),
2828 output_radix_1 = output_radix = radix;
2831 printf_filtered (_("Output radix now set to "
2832 "decimal %u, hex %x, octal %o.\n"),
2833 radix, radix, radix);
2837 /* Set both the input and output radix at once. Try to set the output radix
2838 first, since it has the most restrictive range. An radix that is valid as
2839 an output radix is also valid as an input radix.
2841 It may be useful to have an unusual input radix. If the user wishes to
2842 set an input radix that is not valid as an output radix, he needs to use
2843 the 'set input-radix' command. */
2846 set_radix (char *arg, int from_tty)
2850 radix = (arg == NULL) ? 10 : parse_and_eval_long (arg);
2851 set_output_radix_1 (0, radix);
2852 set_input_radix_1 (0, radix);
2855 printf_filtered (_("Input and output radices now set to "
2856 "decimal %u, hex %x, octal %o.\n"),
2857 radix, radix, radix);
2861 /* Show both the input and output radices. */
2864 show_radix (char *arg, int from_tty)
2868 if (input_radix == output_radix)
2870 printf_filtered (_("Input and output radices set to "
2871 "decimal %u, hex %x, octal %o.\n"),
2872 input_radix, input_radix, input_radix);
2876 printf_filtered (_("Input radix set to decimal "
2877 "%u, hex %x, octal %o.\n"),
2878 input_radix, input_radix, input_radix);
2879 printf_filtered (_("Output radix set to decimal "
2880 "%u, hex %x, octal %o.\n"),
2881 output_radix, output_radix, output_radix);
2888 set_print (char *arg, int from_tty)
2891 "\"set print\" must be followed by the name of a print subcommand.\n");
2892 help_list (setprintlist, "set print ", all_commands, gdb_stdout);
2896 show_print (char *args, int from_tty)
2898 cmd_show_list (showprintlist, from_tty, "");
2902 set_print_raw (char *arg, int from_tty)
2905 "\"set print raw\" must be followed by the name of a \"print raw\" subcommand.\n");
2906 help_list (setprintrawlist, "set print raw ", all_commands, gdb_stdout);
2910 show_print_raw (char *args, int from_tty)
2912 cmd_show_list (showprintrawlist, from_tty, "");
2917 _initialize_valprint (void)
2919 add_prefix_cmd ("print", no_class, set_print,
2920 _("Generic command for setting how things print."),
2921 &setprintlist, "set print ", 0, &setlist);
2922 add_alias_cmd ("p", "print", no_class, 1, &setlist);
2923 /* Prefer set print to set prompt. */
2924 add_alias_cmd ("pr", "print", no_class, 1, &setlist);
2926 add_prefix_cmd ("print", no_class, show_print,
2927 _("Generic command for showing print settings."),
2928 &showprintlist, "show print ", 0, &showlist);
2929 add_alias_cmd ("p", "print", no_class, 1, &showlist);
2930 add_alias_cmd ("pr", "print", no_class, 1, &showlist);
2932 add_prefix_cmd ("raw", no_class, set_print_raw,
2934 Generic command for setting what things to print in \"raw\" mode."),
2935 &setprintrawlist, "set print raw ", 0, &setprintlist);
2936 add_prefix_cmd ("raw", no_class, show_print_raw,
2937 _("Generic command for showing \"print raw\" settings."),
2938 &showprintrawlist, "show print raw ", 0, &showprintlist);
2940 add_setshow_uinteger_cmd ("elements", no_class,
2941 &user_print_options.print_max, _("\
2942 Set limit on string chars or array elements to print."), _("\
2943 Show limit on string chars or array elements to print."), _("\
2944 \"set print elements unlimited\" causes there to be no limit."),
2947 &setprintlist, &showprintlist);
2949 add_setshow_boolean_cmd ("null-stop", no_class,
2950 &user_print_options.stop_print_at_null, _("\
2951 Set printing of char arrays to stop at first null char."), _("\
2952 Show printing of char arrays to stop at first null char."), NULL,
2954 show_stop_print_at_null,
2955 &setprintlist, &showprintlist);
2957 add_setshow_uinteger_cmd ("repeats", no_class,
2958 &user_print_options.repeat_count_threshold, _("\
2959 Set threshold for repeated print elements."), _("\
2960 Show threshold for repeated print elements."), _("\
2961 \"set print repeats unlimited\" causes all elements to be individually printed."),
2963 show_repeat_count_threshold,
2964 &setprintlist, &showprintlist);
2966 add_setshow_boolean_cmd ("pretty", class_support,
2967 &user_print_options.prettyformat_structs, _("\
2968 Set pretty formatting of structures."), _("\
2969 Show pretty formatting of structures."), NULL,
2971 show_prettyformat_structs,
2972 &setprintlist, &showprintlist);
2974 add_setshow_boolean_cmd ("union", class_support,
2975 &user_print_options.unionprint, _("\
2976 Set printing of unions interior to structures."), _("\
2977 Show printing of unions interior to structures."), NULL,
2980 &setprintlist, &showprintlist);
2982 add_setshow_boolean_cmd ("array", class_support,
2983 &user_print_options.prettyformat_arrays, _("\
2984 Set pretty formatting of arrays."), _("\
2985 Show pretty formatting of arrays."), NULL,
2987 show_prettyformat_arrays,
2988 &setprintlist, &showprintlist);
2990 add_setshow_boolean_cmd ("address", class_support,
2991 &user_print_options.addressprint, _("\
2992 Set printing of addresses."), _("\
2993 Show printing of addresses."), NULL,
2996 &setprintlist, &showprintlist);
2998 add_setshow_boolean_cmd ("symbol", class_support,
2999 &user_print_options.symbol_print, _("\
3000 Set printing of symbol names when printing pointers."), _("\
3001 Show printing of symbol names when printing pointers."),
3004 &setprintlist, &showprintlist);
3006 add_setshow_zuinteger_cmd ("input-radix", class_support, &input_radix_1,
3008 Set default input radix for entering numbers."), _("\
3009 Show default input radix for entering numbers."), NULL,
3012 &setlist, &showlist);
3014 add_setshow_zuinteger_cmd ("output-radix", class_support, &output_radix_1,
3016 Set default output radix for printing of values."), _("\
3017 Show default output radix for printing of values."), NULL,
3020 &setlist, &showlist);
3022 /* The "set radix" and "show radix" commands are special in that
3023 they are like normal set and show commands but allow two normally
3024 independent variables to be either set or shown with a single
3025 command. So the usual deprecated_add_set_cmd() and [deleted]
3026 add_show_from_set() commands aren't really appropriate. */
3027 /* FIXME: i18n: With the new add_setshow_integer command, that is no
3028 longer true - show can display anything. */
3029 add_cmd ("radix", class_support, set_radix, _("\
3030 Set default input and output number radices.\n\
3031 Use 'set input-radix' or 'set output-radix' to independently set each.\n\
3032 Without an argument, sets both radices back to the default value of 10."),
3034 add_cmd ("radix", class_support, show_radix, _("\
3035 Show the default input and output number radices.\n\
3036 Use 'show input-radix' or 'show output-radix' to independently show each."),
3039 add_setshow_boolean_cmd ("array-indexes", class_support,
3040 &user_print_options.print_array_indexes, _("\
3041 Set printing of array indexes."), _("\
3042 Show printing of array indexes"), NULL, NULL, show_print_array_indexes,
3043 &setprintlist, &showprintlist);