1 /* Print values for GDB, the GNU debugger.
3 Copyright (C) 1986-2014 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"
32 #include "exceptions.h"
34 #include "extension.h"
36 #include "gdb_obstack.h"
42 /* Maximum number of wchars returned from wchar_iterate. */
45 /* A convenience macro to compute the size of a wchar_t buffer containing X
47 #define WCHAR_BUFLEN(X) ((X) * sizeof (gdb_wchar_t))
49 /* Character buffer size saved while iterating over wchars. */
50 #define WCHAR_BUFLEN_MAX WCHAR_BUFLEN (MAX_WCHARS)
52 /* A structure to encapsulate state information from iterated
53 character conversions. */
54 struct converted_character
56 /* The number of characters converted. */
59 /* The result of the conversion. See charset.h for more. */
60 enum wchar_iterate_result result
;
62 /* The (saved) converted character(s). */
63 gdb_wchar_t chars
[WCHAR_BUFLEN_MAX
];
65 /* The first converted target byte. */
68 /* The number of bytes converted. */
71 /* How many times this character(s) is repeated. */
75 typedef struct converted_character converted_character_d
;
76 DEF_VEC_O (converted_character_d
);
78 /* Command lists for set/show print raw. */
79 struct cmd_list_element
*setprintrawlist
;
80 struct cmd_list_element
*showprintrawlist
;
82 /* Prototypes for local functions */
84 static int partial_memory_read (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
85 int len
, int *errptr
);
87 static void show_print (char *, int);
89 static void set_print (char *, int);
91 static void set_radix (char *, int);
93 static void show_radix (char *, int);
95 static void set_input_radix (char *, int, struct cmd_list_element
*);
97 static void set_input_radix_1 (int, unsigned);
99 static void set_output_radix (char *, int, struct cmd_list_element
*);
101 static void set_output_radix_1 (int, unsigned);
103 void _initialize_valprint (void);
105 #define PRINT_MAX_DEFAULT 200 /* Start print_max off at this value. */
107 struct value_print_options user_print_options
=
109 Val_prettyformat_default
, /* prettyformat */
110 0, /* prettyformat_arrays */
111 0, /* prettyformat_structs */
114 1, /* addressprint */
116 PRINT_MAX_DEFAULT
, /* print_max */
117 10, /* repeat_count_threshold */
118 0, /* output_format */
120 0, /* stop_print_at_null */
121 0, /* print_array_indexes */
123 1, /* static_field_print */
124 1, /* pascal_static_field_print */
130 /* Initialize *OPTS to be a copy of the user print options. */
132 get_user_print_options (struct value_print_options
*opts
)
134 *opts
= user_print_options
;
137 /* Initialize *OPTS to be a copy of the user print options, but with
138 pretty-formatting disabled. */
140 get_no_prettyformat_print_options (struct value_print_options
*opts
)
142 *opts
= user_print_options
;
143 opts
->prettyformat
= Val_no_prettyformat
;
146 /* Initialize *OPTS to be a copy of the user print options, but using
147 FORMAT as the formatting option. */
149 get_formatted_print_options (struct value_print_options
*opts
,
152 *opts
= user_print_options
;
153 opts
->format
= format
;
157 show_print_max (struct ui_file
*file
, int from_tty
,
158 struct cmd_list_element
*c
, const char *value
)
160 fprintf_filtered (file
,
161 _("Limit on string chars or array "
162 "elements to print is %s.\n"),
167 /* Default input and output radixes, and output format letter. */
169 unsigned input_radix
= 10;
171 show_input_radix (struct ui_file
*file
, int from_tty
,
172 struct cmd_list_element
*c
, const char *value
)
174 fprintf_filtered (file
,
175 _("Default input radix for entering numbers is %s.\n"),
179 unsigned output_radix
= 10;
181 show_output_radix (struct ui_file
*file
, int from_tty
,
182 struct cmd_list_element
*c
, const char *value
)
184 fprintf_filtered (file
,
185 _("Default output radix for printing of values is %s.\n"),
189 /* By default we print arrays without printing the index of each element in
190 the array. This behavior can be changed by setting PRINT_ARRAY_INDEXES. */
193 show_print_array_indexes (struct ui_file
*file
, int from_tty
,
194 struct cmd_list_element
*c
, const char *value
)
196 fprintf_filtered (file
, _("Printing of array indexes is %s.\n"), value
);
199 /* Print repeat counts if there are more than this many repetitions of an
200 element in an array. Referenced by the low level language dependent
204 show_repeat_count_threshold (struct ui_file
*file
, int from_tty
,
205 struct cmd_list_element
*c
, const char *value
)
207 fprintf_filtered (file
, _("Threshold for repeated print elements is %s.\n"),
211 /* If nonzero, stops printing of char arrays at first null. */
214 show_stop_print_at_null (struct ui_file
*file
, int from_tty
,
215 struct cmd_list_element
*c
, const char *value
)
217 fprintf_filtered (file
,
218 _("Printing of char arrays to stop "
219 "at first null char is %s.\n"),
223 /* Controls pretty printing of structures. */
226 show_prettyformat_structs (struct ui_file
*file
, int from_tty
,
227 struct cmd_list_element
*c
, const char *value
)
229 fprintf_filtered (file
, _("Pretty formatting of structures is %s.\n"), value
);
232 /* Controls pretty printing of arrays. */
235 show_prettyformat_arrays (struct ui_file
*file
, int from_tty
,
236 struct cmd_list_element
*c
, const char *value
)
238 fprintf_filtered (file
, _("Pretty formatting of arrays is %s.\n"), value
);
241 /* If nonzero, causes unions inside structures or other unions to be
245 show_unionprint (struct ui_file
*file
, int from_tty
,
246 struct cmd_list_element
*c
, const char *value
)
248 fprintf_filtered (file
,
249 _("Printing of unions interior to structures is %s.\n"),
253 /* If nonzero, causes machine addresses to be printed in certain contexts. */
256 show_addressprint (struct ui_file
*file
, int from_tty
,
257 struct cmd_list_element
*c
, const char *value
)
259 fprintf_filtered (file
, _("Printing of addresses is %s.\n"), value
);
263 show_symbol_print (struct ui_file
*file
, int from_tty
,
264 struct cmd_list_element
*c
, const char *value
)
266 fprintf_filtered (file
,
267 _("Printing of symbols when printing pointers is %s.\n"),
273 /* A helper function for val_print. When printing in "summary" mode,
274 we want to print scalar arguments, but not aggregate arguments.
275 This function distinguishes between the two. */
278 val_print_scalar_type_p (struct type
*type
)
280 CHECK_TYPEDEF (type
);
281 while (TYPE_CODE (type
) == TYPE_CODE_REF
)
283 type
= TYPE_TARGET_TYPE (type
);
284 CHECK_TYPEDEF (type
);
286 switch (TYPE_CODE (type
))
288 case TYPE_CODE_ARRAY
:
289 case TYPE_CODE_STRUCT
:
290 case TYPE_CODE_UNION
:
292 case TYPE_CODE_STRING
:
299 /* See its definition in value.h. */
302 valprint_check_validity (struct ui_file
*stream
,
305 const struct value
*val
)
307 CHECK_TYPEDEF (type
);
309 if (TYPE_CODE (type
) != TYPE_CODE_UNION
310 && TYPE_CODE (type
) != TYPE_CODE_STRUCT
311 && TYPE_CODE (type
) != TYPE_CODE_ARRAY
)
313 if (!value_bits_valid (val
, TARGET_CHAR_BIT
* embedded_offset
,
314 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
316 val_print_optimized_out (val
, stream
);
320 if (value_bits_synthetic_pointer (val
, TARGET_CHAR_BIT
* embedded_offset
,
321 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
323 fputs_filtered (_("<synthetic pointer>"), stream
);
327 if (!value_bytes_available (val
, embedded_offset
, TYPE_LENGTH (type
)))
329 val_print_unavailable (stream
);
338 val_print_optimized_out (const struct value
*val
, struct ui_file
*stream
)
340 if (val
!= NULL
&& value_lval_const (val
) == lval_register
)
341 val_print_not_saved (stream
);
343 fprintf_filtered (stream
, _("<optimized out>"));
347 val_print_not_saved (struct ui_file
*stream
)
349 fprintf_filtered (stream
, _("<not saved>"));
353 val_print_unavailable (struct ui_file
*stream
)
355 fprintf_filtered (stream
, _("<unavailable>"));
359 val_print_invalid_address (struct ui_file
*stream
)
361 fprintf_filtered (stream
, _("<invalid address>"));
364 /* A generic val_print that is suitable for use by language
365 implementations of the la_val_print method. This function can
366 handle most type codes, though not all, notably exception
367 TYPE_CODE_UNION and TYPE_CODE_STRUCT, which must be implemented by
370 Most arguments are as to val_print.
372 The additional DECORATIONS argument can be used to customize the
373 output in some small, language-specific ways. */
376 generic_val_print (struct type
*type
, const gdb_byte
*valaddr
,
377 int embedded_offset
, CORE_ADDR address
,
378 struct ui_file
*stream
, int recurse
,
379 const struct value
*original_value
,
380 const struct value_print_options
*options
,
381 const struct generic_val_print_decorations
*decorations
)
383 struct gdbarch
*gdbarch
= get_type_arch (type
);
384 unsigned int i
= 0; /* Number of characters printed. */
386 struct type
*elttype
, *unresolved_elttype
;
387 struct type
*unresolved_type
= type
;
391 CHECK_TYPEDEF (type
);
392 switch (TYPE_CODE (type
))
394 case TYPE_CODE_ARRAY
:
395 unresolved_elttype
= TYPE_TARGET_TYPE (type
);
396 elttype
= check_typedef (unresolved_elttype
);
397 if (TYPE_LENGTH (type
) > 0 && TYPE_LENGTH (unresolved_elttype
) > 0)
399 LONGEST low_bound
, high_bound
;
401 if (!get_array_bounds (type
, &low_bound
, &high_bound
))
402 error (_("Could not determine the array high bound"));
404 if (options
->prettyformat_arrays
)
406 print_spaces_filtered (2 + 2 * recurse
, stream
);
409 fprintf_filtered (stream
, "{");
410 val_print_array_elements (type
, valaddr
, embedded_offset
,
412 recurse
, original_value
, options
, 0);
413 fprintf_filtered (stream
, "}");
416 /* Array of unspecified length: treat like pointer to first
418 addr
= address
+ embedded_offset
;
419 goto print_unpacked_pointer
;
421 case TYPE_CODE_MEMBERPTR
:
422 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
423 original_value
, options
, 0, stream
);
427 if (options
->format
&& options
->format
!= 's')
429 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
430 original_value
, options
, 0, stream
);
433 unresolved_elttype
= TYPE_TARGET_TYPE (type
);
434 elttype
= check_typedef (unresolved_elttype
);
436 addr
= unpack_pointer (type
, valaddr
+ embedded_offset
);
437 print_unpacked_pointer
:
439 if (TYPE_CODE (elttype
) == TYPE_CODE_FUNC
)
441 /* Try to print what function it points to. */
442 print_function_pointer_address (options
, gdbarch
, addr
, stream
);
446 if (options
->symbol_print
)
447 print_address_demangle (options
, gdbarch
, addr
, stream
, demangle
);
448 else if (options
->addressprint
)
449 fputs_filtered (paddress (gdbarch
, addr
), stream
);
454 elttype
= check_typedef (TYPE_TARGET_TYPE (type
));
455 if (options
->addressprint
)
458 = extract_typed_address (valaddr
+ embedded_offset
, type
);
460 fprintf_filtered (stream
, "@");
461 fputs_filtered (paddress (gdbarch
, addr
), stream
);
462 if (options
->deref_ref
)
463 fputs_filtered (": ", stream
);
465 /* De-reference the reference. */
466 if (options
->deref_ref
)
468 if (TYPE_CODE (elttype
) != TYPE_CODE_UNDEF
)
470 struct value
*deref_val
;
472 deref_val
= coerce_ref_if_computed (original_value
);
473 if (deref_val
!= NULL
)
475 /* More complicated computed references are not supported. */
476 gdb_assert (embedded_offset
== 0);
479 deref_val
= value_at (TYPE_TARGET_TYPE (type
),
480 unpack_pointer (type
,
482 + embedded_offset
)));
484 common_val_print (deref_val
, stream
, recurse
, options
,
488 fputs_filtered ("???", stream
);
495 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
496 original_value
, options
, 0, stream
);
499 len
= TYPE_NFIELDS (type
);
500 val
= unpack_long (type
, valaddr
+ embedded_offset
);
501 for (i
= 0; i
< len
; i
++)
504 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
511 fputs_filtered (TYPE_FIELD_NAME (type
, i
), stream
);
513 else if (TYPE_FLAG_ENUM (type
))
517 /* We have a "flag" enum, so we try to decompose it into
518 pieces as appropriate. A flag enum has disjoint
519 constants by definition. */
520 fputs_filtered ("(", stream
);
521 for (i
= 0; i
< len
; ++i
)
525 if ((val
& TYPE_FIELD_ENUMVAL (type
, i
)) != 0)
528 fputs_filtered (" | ", stream
);
531 val
&= ~TYPE_FIELD_ENUMVAL (type
, i
);
532 fputs_filtered (TYPE_FIELD_NAME (type
, i
), stream
);
536 if (first
|| val
!= 0)
539 fputs_filtered (" | ", stream
);
540 fputs_filtered ("unknown: ", stream
);
541 print_longest (stream
, 'd', 0, val
);
544 fputs_filtered (")", stream
);
547 print_longest (stream
, 'd', 0, val
);
550 case TYPE_CODE_FLAGS
:
552 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
553 original_value
, options
, 0, stream
);
555 val_print_type_code_flags (type
, valaddr
+ embedded_offset
,
560 case TYPE_CODE_METHOD
:
563 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
564 original_value
, options
, 0, stream
);
567 /* FIXME, we should consider, at least for ANSI C language,
568 eliminating the distinction made between FUNCs and POINTERs
570 fprintf_filtered (stream
, "{");
571 type_print (type
, "", stream
, -1);
572 fprintf_filtered (stream
, "} ");
573 /* Try to print what function it points to, and its address. */
574 print_address_demangle (options
, gdbarch
, address
, stream
, demangle
);
578 if (options
->format
|| options
->output_format
)
580 struct value_print_options opts
= *options
;
581 opts
.format
= (options
->format
? options
->format
582 : options
->output_format
);
583 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
584 original_value
, &opts
, 0, stream
);
588 val
= unpack_long (type
, valaddr
+ embedded_offset
);
590 fputs_filtered (decorations
->false_name
, stream
);
592 fputs_filtered (decorations
->true_name
, stream
);
594 print_longest (stream
, 'd', 0, val
);
598 case TYPE_CODE_RANGE
:
599 /* FIXME: create_static_range_type does not set the unsigned bit in a
600 range type (I think it probably should copy it from the
601 target type), so we won't print values which are too large to
602 fit in a signed integer correctly. */
603 /* FIXME: Doesn't handle ranges of enums correctly. (Can't just
604 print with the target type, though, because the size of our
605 type and the target type might differ). */
610 if (options
->format
|| options
->output_format
)
612 struct value_print_options opts
= *options
;
614 opts
.format
= (options
->format
? options
->format
615 : options
->output_format
);
616 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
617 original_value
, &opts
, 0, stream
);
620 val_print_type_code_int (type
, valaddr
+ embedded_offset
, stream
);
624 if (options
->format
|| options
->output_format
)
626 struct value_print_options opts
= *options
;
628 opts
.format
= (options
->format
? options
->format
629 : options
->output_format
);
630 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
631 original_value
, &opts
, 0, stream
);
635 val
= unpack_long (type
, valaddr
+ embedded_offset
);
636 if (TYPE_UNSIGNED (type
))
637 fprintf_filtered (stream
, "%u", (unsigned int) val
);
639 fprintf_filtered (stream
, "%d", (int) val
);
640 fputs_filtered (" ", stream
);
641 LA_PRINT_CHAR (val
, unresolved_type
, stream
);
648 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
649 original_value
, options
, 0, stream
);
653 print_floating (valaddr
+ embedded_offset
, type
, stream
);
657 case TYPE_CODE_DECFLOAT
:
659 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
660 original_value
, options
, 0, stream
);
662 print_decimal_floating (valaddr
+ embedded_offset
,
667 fputs_filtered (decorations
->void_name
, stream
);
670 case TYPE_CODE_ERROR
:
671 fprintf_filtered (stream
, "%s", TYPE_ERROR_NAME (type
));
674 case TYPE_CODE_UNDEF
:
675 /* This happens (without TYPE_FLAG_STUB set) on systems which
676 don't use dbx xrefs (NO_DBX_XREFS in gcc) if a file has a
677 "struct foo *bar" and no complete type for struct foo in that
679 fprintf_filtered (stream
, _("<incomplete type>"));
682 case TYPE_CODE_COMPLEX
:
683 fprintf_filtered (stream
, "%s", decorations
->complex_prefix
);
685 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
),
686 valaddr
, embedded_offset
,
687 original_value
, options
, 0, stream
);
689 print_floating (valaddr
+ embedded_offset
,
690 TYPE_TARGET_TYPE (type
),
692 fprintf_filtered (stream
, "%s", decorations
->complex_infix
);
694 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
),
697 + TYPE_LENGTH (TYPE_TARGET_TYPE (type
)),
701 print_floating (valaddr
+ embedded_offset
702 + TYPE_LENGTH (TYPE_TARGET_TYPE (type
)),
703 TYPE_TARGET_TYPE (type
),
705 fprintf_filtered (stream
, "%s", decorations
->complex_suffix
);
708 case TYPE_CODE_UNION
:
709 case TYPE_CODE_STRUCT
:
710 case TYPE_CODE_METHODPTR
:
712 error (_("Unhandled type code %d in symbol table."),
718 /* Print using the given LANGUAGE the data of type TYPE located at
719 VALADDR + EMBEDDED_OFFSET (within GDB), which came from the
720 inferior at address ADDRESS + EMBEDDED_OFFSET, onto stdio stream
721 STREAM according to OPTIONS. VAL is the whole object that came
722 from ADDRESS. VALADDR must point to the head of VAL's contents
725 The language printers will pass down an adjusted EMBEDDED_OFFSET to
726 further helper subroutines as subfields of TYPE are printed. In
727 such cases, VALADDR is passed down unadjusted, as well as VAL, so
728 that VAL can be queried for metadata about the contents data being
729 printed, using EMBEDDED_OFFSET as an offset into VAL's contents
730 buffer. For example: "has this field been optimized out", or "I'm
731 printing an object while inspecting a traceframe; has this
732 particular piece of data been collected?".
734 RECURSE indicates the amount of indentation to supply before
735 continuation lines; this amount is roughly twice the value of
739 val_print (struct type
*type
, const gdb_byte
*valaddr
, int embedded_offset
,
740 CORE_ADDR address
, struct ui_file
*stream
, int recurse
,
741 const struct value
*val
,
742 const struct value_print_options
*options
,
743 const struct language_defn
*language
)
745 volatile struct gdb_exception except
;
747 struct value_print_options local_opts
= *options
;
748 struct type
*real_type
= check_typedef (type
);
750 if (local_opts
.prettyformat
== Val_prettyformat_default
)
751 local_opts
.prettyformat
= (local_opts
.prettyformat_structs
752 ? Val_prettyformat
: Val_no_prettyformat
);
756 /* Ensure that the type is complete and not just a stub. If the type is
757 only a stub and we can't find and substitute its complete type, then
758 print appropriate string and return. */
760 if (TYPE_STUB (real_type
))
762 fprintf_filtered (stream
, _("<incomplete type>"));
767 if (!valprint_check_validity (stream
, real_type
, embedded_offset
, val
))
772 ret
= apply_ext_lang_val_pretty_printer (type
, valaddr
, embedded_offset
,
773 address
, stream
, recurse
,
774 val
, options
, language
);
779 /* Handle summary mode. If the value is a scalar, print it;
780 otherwise, print an ellipsis. */
781 if (options
->summary
&& !val_print_scalar_type_p (type
))
783 fprintf_filtered (stream
, "...");
787 TRY_CATCH (except
, RETURN_MASK_ERROR
)
789 language
->la_val_print (type
, valaddr
, embedded_offset
, address
,
790 stream
, recurse
, val
,
793 if (except
.reason
< 0)
794 fprintf_filtered (stream
, _("<error reading variable>"));
797 /* Check whether the value VAL is printable. Return 1 if it is;
798 return 0 and print an appropriate error message to STREAM according to
799 OPTIONS if it is not. */
802 value_check_printable (struct value
*val
, struct ui_file
*stream
,
803 const struct value_print_options
*options
)
807 fprintf_filtered (stream
, _("<address of value unknown>"));
811 if (value_entirely_optimized_out (val
))
813 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
814 fprintf_filtered (stream
, "...");
816 val_print_optimized_out (val
, stream
);
820 if (value_entirely_unavailable (val
))
822 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
823 fprintf_filtered (stream
, "...");
825 val_print_unavailable (stream
);
829 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_INTERNAL_FUNCTION
)
831 fprintf_filtered (stream
, _("<internal function %s>"),
832 value_internal_function_name (val
));
839 /* Print using the given LANGUAGE the value VAL onto stream STREAM according
842 This is a preferable interface to val_print, above, because it uses
843 GDB's value mechanism. */
846 common_val_print (struct value
*val
, struct ui_file
*stream
, int recurse
,
847 const struct value_print_options
*options
,
848 const struct language_defn
*language
)
850 if (!value_check_printable (val
, stream
, options
))
853 if (language
->la_language
== language_ada
)
854 /* The value might have a dynamic type, which would cause trouble
855 below when trying to extract the value contents (since the value
856 size is determined from the type size which is unknown). So
857 get a fixed representation of our value. */
858 val
= ada_to_fixed_value (val
);
860 val_print (value_type (val
), value_contents_for_printing (val
),
861 value_embedded_offset (val
), value_address (val
),
863 val
, options
, language
);
866 /* Print on stream STREAM the value VAL according to OPTIONS. The value
867 is printed using the current_language syntax. */
870 value_print (struct value
*val
, struct ui_file
*stream
,
871 const struct value_print_options
*options
)
873 if (!value_check_printable (val
, stream
, options
))
879 = apply_ext_lang_val_pretty_printer (value_type (val
),
880 value_contents_for_printing (val
),
881 value_embedded_offset (val
),
884 val
, options
, current_language
);
890 LA_VALUE_PRINT (val
, stream
, options
);
893 /* Called by various <lang>_val_print routines to print
894 TYPE_CODE_INT's. TYPE is the type. VALADDR is the address of the
895 value. STREAM is where to print the value. */
898 val_print_type_code_int (struct type
*type
, const gdb_byte
*valaddr
,
899 struct ui_file
*stream
)
901 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (type
));
903 if (TYPE_LENGTH (type
) > sizeof (LONGEST
))
907 if (TYPE_UNSIGNED (type
)
908 && extract_long_unsigned_integer (valaddr
, TYPE_LENGTH (type
),
911 print_longest (stream
, 'u', 0, val
);
915 /* Signed, or we couldn't turn an unsigned value into a
916 LONGEST. For signed values, one could assume two's
917 complement (a reasonable assumption, I think) and do
919 print_hex_chars (stream
, (unsigned char *) valaddr
,
920 TYPE_LENGTH (type
), byte_order
);
925 print_longest (stream
, TYPE_UNSIGNED (type
) ? 'u' : 'd', 0,
926 unpack_long (type
, valaddr
));
931 val_print_type_code_flags (struct type
*type
, const gdb_byte
*valaddr
,
932 struct ui_file
*stream
)
934 ULONGEST val
= unpack_long (type
, valaddr
);
935 int bitpos
, nfields
= TYPE_NFIELDS (type
);
937 fputs_filtered ("[ ", stream
);
938 for (bitpos
= 0; bitpos
< nfields
; bitpos
++)
940 if (TYPE_FIELD_BITPOS (type
, bitpos
) != -1
941 && (val
& ((ULONGEST
)1 << bitpos
)))
943 if (TYPE_FIELD_NAME (type
, bitpos
))
944 fprintf_filtered (stream
, "%s ", TYPE_FIELD_NAME (type
, bitpos
));
946 fprintf_filtered (stream
, "#%d ", bitpos
);
949 fputs_filtered ("]", stream
);
952 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
953 according to OPTIONS and SIZE on STREAM. Format i is not supported
956 This is how the elements of an array or structure are printed
960 val_print_scalar_formatted (struct type
*type
,
961 const gdb_byte
*valaddr
, int embedded_offset
,
962 const struct value
*val
,
963 const struct value_print_options
*options
,
965 struct ui_file
*stream
)
967 gdb_assert (val
!= NULL
);
968 gdb_assert (valaddr
== value_contents_for_printing_const (val
));
970 /* If we get here with a string format, try again without it. Go
971 all the way back to the language printers, which may call us
973 if (options
->format
== 's')
975 struct value_print_options opts
= *options
;
978 val_print (type
, valaddr
, embedded_offset
, 0, stream
, 0, val
, &opts
,
983 /* A scalar object that does not have all bits available can't be
984 printed, because all bits contribute to its representation. */
985 if (!value_bits_valid (val
, TARGET_CHAR_BIT
* embedded_offset
,
986 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
987 val_print_optimized_out (val
, stream
);
988 else if (!value_bytes_available (val
, embedded_offset
, TYPE_LENGTH (type
)))
989 val_print_unavailable (stream
);
991 print_scalar_formatted (valaddr
+ embedded_offset
, type
,
992 options
, size
, stream
);
995 /* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g.
996 The raison d'etre of this function is to consolidate printing of
997 LONG_LONG's into this one function. The format chars b,h,w,g are
998 from print_scalar_formatted(). Numbers are printed using C
1001 USE_C_FORMAT means to use C format in all cases. Without it,
1002 'o' and 'x' format do not include the standard C radix prefix
1005 Hilfinger/2004-09-09: USE_C_FORMAT was originally called USE_LOCAL
1006 and was intended to request formating according to the current
1007 language and would be used for most integers that GDB prints. The
1008 exceptional cases were things like protocols where the format of
1009 the integer is a protocol thing, not a user-visible thing). The
1010 parameter remains to preserve the information of what things might
1011 be printed with language-specific format, should we ever resurrect
1015 print_longest (struct ui_file
*stream
, int format
, int use_c_format
,
1023 val
= int_string (val_long
, 10, 1, 0, 1); break;
1025 val
= int_string (val_long
, 10, 0, 0, 1); break;
1027 val
= int_string (val_long
, 16, 0, 0, use_c_format
); break;
1029 val
= int_string (val_long
, 16, 0, 2, 1); break;
1031 val
= int_string (val_long
, 16, 0, 4, 1); break;
1033 val
= int_string (val_long
, 16, 0, 8, 1); break;
1035 val
= int_string (val_long
, 16, 0, 16, 1); break;
1038 val
= int_string (val_long
, 8, 0, 0, use_c_format
); break;
1040 internal_error (__FILE__
, __LINE__
,
1041 _("failed internal consistency check"));
1043 fputs_filtered (val
, stream
);
1046 /* This used to be a macro, but I don't think it is called often enough
1047 to merit such treatment. */
1048 /* Convert a LONGEST to an int. This is used in contexts (e.g. number of
1049 arguments to a function, number in a value history, register number, etc.)
1050 where the value must not be larger than can fit in an int. */
1053 longest_to_int (LONGEST arg
)
1055 /* Let the compiler do the work. */
1056 int rtnval
= (int) arg
;
1058 /* Check for overflows or underflows. */
1059 if (sizeof (LONGEST
) > sizeof (int))
1063 error (_("Value out of range."));
1069 /* Print a floating point value of type TYPE (not always a
1070 TYPE_CODE_FLT), pointed to in GDB by VALADDR, on STREAM. */
1073 print_floating (const gdb_byte
*valaddr
, struct type
*type
,
1074 struct ui_file
*stream
)
1078 const struct floatformat
*fmt
= NULL
;
1079 unsigned len
= TYPE_LENGTH (type
);
1080 enum float_kind kind
;
1082 /* If it is a floating-point, check for obvious problems. */
1083 if (TYPE_CODE (type
) == TYPE_CODE_FLT
)
1084 fmt
= floatformat_from_type (type
);
1087 kind
= floatformat_classify (fmt
, valaddr
);
1088 if (kind
== float_nan
)
1090 if (floatformat_is_negative (fmt
, valaddr
))
1091 fprintf_filtered (stream
, "-");
1092 fprintf_filtered (stream
, "nan(");
1093 fputs_filtered ("0x", stream
);
1094 fputs_filtered (floatformat_mantissa (fmt
, valaddr
), stream
);
1095 fprintf_filtered (stream
, ")");
1098 else if (kind
== float_infinite
)
1100 if (floatformat_is_negative (fmt
, valaddr
))
1101 fputs_filtered ("-", stream
);
1102 fputs_filtered ("inf", stream
);
1107 /* NOTE: cagney/2002-01-15: The TYPE passed into print_floating()
1108 isn't necessarily a TYPE_CODE_FLT. Consequently, unpack_double
1109 needs to be used as that takes care of any necessary type
1110 conversions. Such conversions are of course direct to DOUBLEST
1111 and disregard any possible target floating point limitations.
1112 For instance, a u64 would be converted and displayed exactly on a
1113 host with 80 bit DOUBLEST but with loss of information on a host
1114 with 64 bit DOUBLEST. */
1116 doub
= unpack_double (type
, valaddr
, &inv
);
1119 fprintf_filtered (stream
, "<invalid float value>");
1123 /* FIXME: kettenis/2001-01-20: The following code makes too much
1124 assumptions about the host and target floating point format. */
1126 /* NOTE: cagney/2002-02-03: Since the TYPE of what was passed in may
1127 not necessarily be a TYPE_CODE_FLT, the below ignores that and
1128 instead uses the type's length to determine the precision of the
1129 floating-point value being printed. */
1131 if (len
< sizeof (double))
1132 fprintf_filtered (stream
, "%.9g", (double) doub
);
1133 else if (len
== sizeof (double))
1134 fprintf_filtered (stream
, "%.17g", (double) doub
);
1136 #ifdef PRINTF_HAS_LONG_DOUBLE
1137 fprintf_filtered (stream
, "%.35Lg", doub
);
1139 /* This at least wins with values that are representable as
1141 fprintf_filtered (stream
, "%.17g", (double) doub
);
1146 print_decimal_floating (const gdb_byte
*valaddr
, struct type
*type
,
1147 struct ui_file
*stream
)
1149 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (type
));
1150 char decstr
[MAX_DECIMAL_STRING
];
1151 unsigned len
= TYPE_LENGTH (type
);
1153 decimal_to_string (valaddr
, len
, byte_order
, decstr
);
1154 fputs_filtered (decstr
, stream
);
1159 print_binary_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1160 unsigned len
, enum bfd_endian byte_order
)
1163 #define BITS_IN_BYTES 8
1169 /* Declared "int" so it will be signed.
1170 This ensures that right shift will shift in zeros. */
1172 const int mask
= 0x080;
1174 /* FIXME: We should be not printing leading zeroes in most cases. */
1176 if (byte_order
== BFD_ENDIAN_BIG
)
1182 /* Every byte has 8 binary characters; peel off
1183 and print from the MSB end. */
1185 for (i
= 0; i
< (BITS_IN_BYTES
* sizeof (*p
)); i
++)
1187 if (*p
& (mask
>> i
))
1192 fprintf_filtered (stream
, "%1d", b
);
1198 for (p
= valaddr
+ len
- 1;
1202 for (i
= 0; i
< (BITS_IN_BYTES
* sizeof (*p
)); i
++)
1204 if (*p
& (mask
>> i
))
1209 fprintf_filtered (stream
, "%1d", b
);
1215 /* VALADDR points to an integer of LEN bytes.
1216 Print it in octal on stream or format it in buf. */
1219 print_octal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1220 unsigned len
, enum bfd_endian byte_order
)
1223 unsigned char octa1
, octa2
, octa3
, carry
;
1226 /* FIXME: We should be not printing leading zeroes in most cases. */
1229 /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track
1230 * the extra bits, which cycle every three bytes:
1232 * Byte side: 0 1 2 3
1234 * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 |
1236 * Octal side: 0 1 carry 3 4 carry ...
1238 * Cycle number: 0 1 2
1240 * But of course we are printing from the high side, so we have to
1241 * figure out where in the cycle we are so that we end up with no
1242 * left over bits at the end.
1244 #define BITS_IN_OCTAL 3
1245 #define HIGH_ZERO 0340
1246 #define LOW_ZERO 0016
1247 #define CARRY_ZERO 0003
1248 #define HIGH_ONE 0200
1249 #define MID_ONE 0160
1250 #define LOW_ONE 0016
1251 #define CARRY_ONE 0001
1252 #define HIGH_TWO 0300
1253 #define MID_TWO 0070
1254 #define LOW_TWO 0007
1256 /* For 32 we start in cycle 2, with two bits and one bit carry;
1257 for 64 in cycle in cycle 1, with one bit and a two bit carry. */
1259 cycle
= (len
* BITS_IN_BYTES
) % BITS_IN_OCTAL
;
1262 fputs_filtered ("0", stream
);
1263 if (byte_order
== BFD_ENDIAN_BIG
)
1272 /* No carry in, carry out two bits. */
1274 octa1
= (HIGH_ZERO
& *p
) >> 5;
1275 octa2
= (LOW_ZERO
& *p
) >> 2;
1276 carry
= (CARRY_ZERO
& *p
);
1277 fprintf_filtered (stream
, "%o", octa1
);
1278 fprintf_filtered (stream
, "%o", octa2
);
1282 /* Carry in two bits, carry out one bit. */
1284 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1285 octa2
= (MID_ONE
& *p
) >> 4;
1286 octa3
= (LOW_ONE
& *p
) >> 1;
1287 carry
= (CARRY_ONE
& *p
);
1288 fprintf_filtered (stream
, "%o", octa1
);
1289 fprintf_filtered (stream
, "%o", octa2
);
1290 fprintf_filtered (stream
, "%o", octa3
);
1294 /* Carry in one bit, no carry out. */
1296 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1297 octa2
= (MID_TWO
& *p
) >> 3;
1298 octa3
= (LOW_TWO
& *p
);
1300 fprintf_filtered (stream
, "%o", octa1
);
1301 fprintf_filtered (stream
, "%o", octa2
);
1302 fprintf_filtered (stream
, "%o", octa3
);
1306 error (_("Internal error in octal conversion;"));
1310 cycle
= cycle
% BITS_IN_OCTAL
;
1315 for (p
= valaddr
+ len
- 1;
1322 /* Carry out, no carry in */
1324 octa1
= (HIGH_ZERO
& *p
) >> 5;
1325 octa2
= (LOW_ZERO
& *p
) >> 2;
1326 carry
= (CARRY_ZERO
& *p
);
1327 fprintf_filtered (stream
, "%o", octa1
);
1328 fprintf_filtered (stream
, "%o", octa2
);
1332 /* Carry in, carry out */
1334 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1335 octa2
= (MID_ONE
& *p
) >> 4;
1336 octa3
= (LOW_ONE
& *p
) >> 1;
1337 carry
= (CARRY_ONE
& *p
);
1338 fprintf_filtered (stream
, "%o", octa1
);
1339 fprintf_filtered (stream
, "%o", octa2
);
1340 fprintf_filtered (stream
, "%o", octa3
);
1344 /* Carry in, no carry out */
1346 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1347 octa2
= (MID_TWO
& *p
) >> 3;
1348 octa3
= (LOW_TWO
& *p
);
1350 fprintf_filtered (stream
, "%o", octa1
);
1351 fprintf_filtered (stream
, "%o", octa2
);
1352 fprintf_filtered (stream
, "%o", octa3
);
1356 error (_("Internal error in octal conversion;"));
1360 cycle
= cycle
% BITS_IN_OCTAL
;
1366 /* VALADDR points to an integer of LEN bytes.
1367 Print it in decimal on stream or format it in buf. */
1370 print_decimal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1371 unsigned len
, enum bfd_endian byte_order
)
1374 #define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */
1375 #define CARRY_LEFT( x ) ((x) % TEN)
1376 #define SHIFT( x ) ((x) << 4)
1377 #define LOW_NIBBLE( x ) ( (x) & 0x00F)
1378 #define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4)
1381 unsigned char *digits
;
1384 int i
, j
, decimal_digits
;
1388 /* Base-ten number is less than twice as many digits
1389 as the base 16 number, which is 2 digits per byte. */
1391 decimal_len
= len
* 2 * 2;
1392 digits
= xmalloc (decimal_len
);
1394 for (i
= 0; i
< decimal_len
; i
++)
1399 /* Ok, we have an unknown number of bytes of data to be printed in
1402 * Given a hex number (in nibbles) as XYZ, we start by taking X and
1403 * decemalizing it as "x1 x2" in two decimal nibbles. Then we multiply
1404 * the nibbles by 16, add Y and re-decimalize. Repeat with Z.
1406 * The trick is that "digits" holds a base-10 number, but sometimes
1407 * the individual digits are > 10.
1409 * Outer loop is per nibble (hex digit) of input, from MSD end to
1412 decimal_digits
= 0; /* Number of decimal digits so far */
1413 p
= (byte_order
== BFD_ENDIAN_BIG
) ? valaddr
: valaddr
+ len
- 1;
1415 while ((byte_order
== BFD_ENDIAN_BIG
) ? (p
< valaddr
+ len
) : (p
>= valaddr
))
1418 * Multiply current base-ten number by 16 in place.
1419 * Each digit was between 0 and 9, now is between
1422 for (j
= 0; j
< decimal_digits
; j
++)
1424 digits
[j
] = SHIFT (digits
[j
]);
1427 /* Take the next nibble off the input and add it to what
1428 * we've got in the LSB position. Bottom 'digit' is now
1429 * between 0 and 159.
1431 * "flip" is used to run this loop twice for each byte.
1435 /* Take top nibble. */
1437 digits
[0] += HIGH_NIBBLE (*p
);
1442 /* Take low nibble and bump our pointer "p". */
1444 digits
[0] += LOW_NIBBLE (*p
);
1445 if (byte_order
== BFD_ENDIAN_BIG
)
1452 /* Re-decimalize. We have to do this often enough
1453 * that we don't overflow, but once per nibble is
1454 * overkill. Easier this way, though. Note that the
1455 * carry is often larger than 10 (e.g. max initial
1456 * carry out of lowest nibble is 15, could bubble all
1457 * the way up greater than 10). So we have to do
1458 * the carrying beyond the last current digit.
1461 for (j
= 0; j
< decimal_len
- 1; j
++)
1465 /* "/" won't handle an unsigned char with
1466 * a value that if signed would be negative.
1467 * So extend to longword int via "dummy".
1470 carry
= CARRY_OUT (dummy
);
1471 digits
[j
] = CARRY_LEFT (dummy
);
1473 if (j
>= decimal_digits
&& carry
== 0)
1476 * All higher digits are 0 and we
1477 * no longer have a carry.
1479 * Note: "j" is 0-based, "decimal_digits" is
1482 decimal_digits
= j
+ 1;
1488 /* Ok, now "digits" is the decimal representation, with
1489 the "decimal_digits" actual digits. Print! */
1491 for (i
= decimal_digits
- 1; i
>= 0; i
--)
1493 fprintf_filtered (stream
, "%1d", digits
[i
]);
1498 /* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */
1501 print_hex_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1502 unsigned len
, enum bfd_endian byte_order
)
1506 /* FIXME: We should be not printing leading zeroes in most cases. */
1508 fputs_filtered ("0x", stream
);
1509 if (byte_order
== BFD_ENDIAN_BIG
)
1515 fprintf_filtered (stream
, "%02x", *p
);
1520 for (p
= valaddr
+ len
- 1;
1524 fprintf_filtered (stream
, "%02x", *p
);
1529 /* VALADDR points to a char integer of LEN bytes.
1530 Print it out in appropriate language form on stream.
1531 Omit any leading zero chars. */
1534 print_char_chars (struct ui_file
*stream
, struct type
*type
,
1535 const gdb_byte
*valaddr
,
1536 unsigned len
, enum bfd_endian byte_order
)
1540 if (byte_order
== BFD_ENDIAN_BIG
)
1543 while (p
< valaddr
+ len
- 1 && *p
== 0)
1546 while (p
< valaddr
+ len
)
1548 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
1554 p
= valaddr
+ len
- 1;
1555 while (p
> valaddr
&& *p
== 0)
1558 while (p
>= valaddr
)
1560 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
1566 /* Print function pointer with inferior address ADDRESS onto stdio
1570 print_function_pointer_address (const struct value_print_options
*options
,
1571 struct gdbarch
*gdbarch
,
1573 struct ui_file
*stream
)
1576 = gdbarch_convert_from_func_ptr_addr (gdbarch
, address
,
1579 /* If the function pointer is represented by a description, print
1580 the address of the description. */
1581 if (options
->addressprint
&& func_addr
!= address
)
1583 fputs_filtered ("@", stream
);
1584 fputs_filtered (paddress (gdbarch
, address
), stream
);
1585 fputs_filtered (": ", stream
);
1587 print_address_demangle (options
, gdbarch
, func_addr
, stream
, demangle
);
1591 /* Print on STREAM using the given OPTIONS the index for the element
1592 at INDEX of an array whose index type is INDEX_TYPE. */
1595 maybe_print_array_index (struct type
*index_type
, LONGEST index
,
1596 struct ui_file
*stream
,
1597 const struct value_print_options
*options
)
1599 struct value
*index_value
;
1601 if (!options
->print_array_indexes
)
1604 index_value
= value_from_longest (index_type
, index
);
1606 LA_PRINT_ARRAY_INDEX (index_value
, stream
, options
);
1609 /* Called by various <lang>_val_print routines to print elements of an
1610 array in the form "<elem1>, <elem2>, <elem3>, ...".
1612 (FIXME?) Assumes array element separator is a comma, which is correct
1613 for all languages currently handled.
1614 (FIXME?) Some languages have a notation for repeated array elements,
1615 perhaps we should try to use that notation when appropriate. */
1618 val_print_array_elements (struct type
*type
,
1619 const gdb_byte
*valaddr
, int embedded_offset
,
1620 CORE_ADDR address
, struct ui_file
*stream
,
1622 const struct value
*val
,
1623 const struct value_print_options
*options
,
1626 unsigned int things_printed
= 0;
1628 struct type
*elttype
, *index_type
;
1630 /* Position of the array element we are examining to see
1631 whether it is repeated. */
1633 /* Number of repetitions we have detected so far. */
1635 LONGEST low_bound
, high_bound
;
1637 elttype
= TYPE_TARGET_TYPE (type
);
1638 eltlen
= TYPE_LENGTH (check_typedef (elttype
));
1639 index_type
= TYPE_INDEX_TYPE (type
);
1641 if (get_array_bounds (type
, &low_bound
, &high_bound
))
1643 /* The array length should normally be HIGH_BOUND - LOW_BOUND + 1.
1644 But we have to be a little extra careful, because some languages
1645 such as Ada allow LOW_BOUND to be greater than HIGH_BOUND for
1646 empty arrays. In that situation, the array length is just zero,
1648 if (low_bound
> high_bound
)
1651 len
= high_bound
- low_bound
+ 1;
1655 warning (_("unable to get bounds of array, assuming null array"));
1660 annotate_array_section_begin (i
, elttype
);
1662 for (; i
< len
&& things_printed
< options
->print_max
; i
++)
1666 if (options
->prettyformat_arrays
)
1668 fprintf_filtered (stream
, ",\n");
1669 print_spaces_filtered (2 + 2 * recurse
, stream
);
1673 fprintf_filtered (stream
, ", ");
1676 wrap_here (n_spaces (2 + 2 * recurse
));
1677 maybe_print_array_index (index_type
, i
+ low_bound
,
1682 /* Only check for reps if repeat_count_threshold is not set to
1683 UINT_MAX (unlimited). */
1684 if (options
->repeat_count_threshold
< UINT_MAX
)
1687 && value_available_contents_eq (val
,
1688 embedded_offset
+ i
* eltlen
,
1699 if (reps
> options
->repeat_count_threshold
)
1701 val_print (elttype
, valaddr
, embedded_offset
+ i
* eltlen
,
1702 address
, stream
, recurse
+ 1, val
, options
,
1704 annotate_elt_rep (reps
);
1705 fprintf_filtered (stream
, " <repeats %u times>", reps
);
1706 annotate_elt_rep_end ();
1709 things_printed
+= options
->repeat_count_threshold
;
1713 val_print (elttype
, valaddr
, embedded_offset
+ i
* eltlen
,
1715 stream
, recurse
+ 1, val
, options
, current_language
);
1720 annotate_array_section_end ();
1723 fprintf_filtered (stream
, "...");
1727 /* Read LEN bytes of target memory at address MEMADDR, placing the
1728 results in GDB's memory at MYADDR. Returns a count of the bytes
1729 actually read, and optionally a target_xfer_status value in the
1730 location pointed to by ERRPTR if ERRPTR is non-null. */
1732 /* FIXME: cagney/1999-10-14: Only used by val_print_string. Can this
1733 function be eliminated. */
1736 partial_memory_read (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
1737 int len
, int *errptr
)
1739 int nread
; /* Number of bytes actually read. */
1740 int errcode
; /* Error from last read. */
1742 /* First try a complete read. */
1743 errcode
= target_read_memory (memaddr
, myaddr
, len
);
1751 /* Loop, reading one byte at a time until we get as much as we can. */
1752 for (errcode
= 0, nread
= 0; len
> 0 && errcode
== 0; nread
++, len
--)
1754 errcode
= target_read_memory (memaddr
++, myaddr
++, 1);
1756 /* If an error, the last read was unsuccessful, so adjust count. */
1769 /* Read a string from the inferior, at ADDR, with LEN characters of WIDTH bytes
1770 each. Fetch at most FETCHLIMIT characters. BUFFER will be set to a newly
1771 allocated buffer containing the string, which the caller is responsible to
1772 free, and BYTES_READ will be set to the number of bytes read. Returns 0 on
1773 success, or a target_xfer_status on failure.
1775 If LEN > 0, reads the lesser of LEN or FETCHLIMIT characters
1776 (including eventual NULs in the middle or end of the string).
1778 If LEN is -1, stops at the first null character (not necessarily
1779 the first null byte) up to a maximum of FETCHLIMIT characters. Set
1780 FETCHLIMIT to UINT_MAX to read as many characters as possible from
1783 Unless an exception is thrown, BUFFER will always be allocated, even on
1784 failure. In this case, some characters might have been read before the
1785 failure happened. Check BYTES_READ to recognize this situation.
1787 Note: There was a FIXME asking to make this code use target_read_string,
1788 but this function is more general (can read past null characters, up to
1789 given LEN). Besides, it is used much more often than target_read_string
1790 so it is more tested. Perhaps callers of target_read_string should use
1791 this function instead? */
1794 read_string (CORE_ADDR addr
, int len
, int width
, unsigned int fetchlimit
,
1795 enum bfd_endian byte_order
, gdb_byte
**buffer
, int *bytes_read
)
1797 int found_nul
; /* Non-zero if we found the nul char. */
1798 int errcode
; /* Errno returned from bad reads. */
1799 unsigned int nfetch
; /* Chars to fetch / chars fetched. */
1800 unsigned int chunksize
; /* Size of each fetch, in chars. */
1801 gdb_byte
*bufptr
; /* Pointer to next available byte in
1803 gdb_byte
*limit
; /* First location past end of fetch buffer. */
1804 struct cleanup
*old_chain
= NULL
; /* Top of the old cleanup chain. */
1806 /* Decide how large of chunks to try to read in one operation. This
1807 is also pretty simple. If LEN >= zero, then we want fetchlimit chars,
1808 so we might as well read them all in one operation. If LEN is -1, we
1809 are looking for a NUL terminator to end the fetching, so we might as
1810 well read in blocks that are large enough to be efficient, but not so
1811 large as to be slow if fetchlimit happens to be large. So we choose the
1812 minimum of 8 and fetchlimit. We used to use 200 instead of 8 but
1813 200 is way too big for remote debugging over a serial line. */
1815 chunksize
= (len
== -1 ? min (8, fetchlimit
) : fetchlimit
);
1817 /* Loop until we either have all the characters, or we encounter
1818 some error, such as bumping into the end of the address space. */
1823 old_chain
= make_cleanup (free_current_contents
, buffer
);
1827 unsigned int fetchlen
= min (len
, fetchlimit
);
1829 *buffer
= (gdb_byte
*) xmalloc (fetchlen
* width
);
1832 nfetch
= partial_memory_read (addr
, bufptr
, fetchlen
* width
, &errcode
)
1834 addr
+= nfetch
* width
;
1835 bufptr
+= nfetch
* width
;
1839 unsigned long bufsize
= 0;
1844 nfetch
= min (chunksize
, fetchlimit
- bufsize
);
1846 if (*buffer
== NULL
)
1847 *buffer
= (gdb_byte
*) xmalloc (nfetch
* width
);
1849 *buffer
= (gdb_byte
*) xrealloc (*buffer
,
1850 (nfetch
+ bufsize
) * width
);
1852 bufptr
= *buffer
+ bufsize
* width
;
1855 /* Read as much as we can. */
1856 nfetch
= partial_memory_read (addr
, bufptr
, nfetch
* width
, &errcode
)
1859 /* Scan this chunk for the null character that terminates the string
1860 to print. If found, we don't need to fetch any more. Note
1861 that bufptr is explicitly left pointing at the next character
1862 after the null character, or at the next character after the end
1865 limit
= bufptr
+ nfetch
* width
;
1866 while (bufptr
< limit
)
1870 c
= extract_unsigned_integer (bufptr
, width
, byte_order
);
1875 /* We don't care about any error which happened after
1876 the NUL terminator. */
1883 while (errcode
== 0 /* no error */
1884 && bufptr
- *buffer
< fetchlimit
* width
/* no overrun */
1885 && !found_nul
); /* haven't found NUL yet */
1888 { /* Length of string is really 0! */
1889 /* We always allocate *buffer. */
1890 *buffer
= bufptr
= xmalloc (1);
1894 /* bufptr and addr now point immediately beyond the last byte which we
1895 consider part of the string (including a '\0' which ends the string). */
1896 *bytes_read
= bufptr
- *buffer
;
1900 discard_cleanups (old_chain
);
1905 /* Return true if print_wchar can display W without resorting to a
1906 numeric escape, false otherwise. */
1909 wchar_printable (gdb_wchar_t w
)
1911 return (gdb_iswprint (w
)
1912 || w
== LCST ('\a') || w
== LCST ('\b')
1913 || w
== LCST ('\f') || w
== LCST ('\n')
1914 || w
== LCST ('\r') || w
== LCST ('\t')
1915 || w
== LCST ('\v'));
1918 /* A helper function that converts the contents of STRING to wide
1919 characters and then appends them to OUTPUT. */
1922 append_string_as_wide (const char *string
,
1923 struct obstack
*output
)
1925 for (; *string
; ++string
)
1927 gdb_wchar_t w
= gdb_btowc (*string
);
1928 obstack_grow (output
, &w
, sizeof (gdb_wchar_t
));
1932 /* Print a wide character W to OUTPUT. ORIG is a pointer to the
1933 original (target) bytes representing the character, ORIG_LEN is the
1934 number of valid bytes. WIDTH is the number of bytes in a base
1935 characters of the type. OUTPUT is an obstack to which wide
1936 characters are emitted. QUOTER is a (narrow) character indicating
1937 the style of quotes surrounding the character to be printed.
1938 NEED_ESCAPE is an in/out flag which is used to track numeric
1939 escapes across calls. */
1942 print_wchar (gdb_wint_t w
, const gdb_byte
*orig
,
1943 int orig_len
, int width
,
1944 enum bfd_endian byte_order
,
1945 struct obstack
*output
,
1946 int quoter
, int *need_escapep
)
1948 int need_escape
= *need_escapep
;
1952 /* iswprint implementation on Windows returns 1 for tab character.
1953 In order to avoid different printout on this host, we explicitly
1954 use wchar_printable function. */
1958 obstack_grow_wstr (output
, LCST ("\\a"));
1961 obstack_grow_wstr (output
, LCST ("\\b"));
1964 obstack_grow_wstr (output
, LCST ("\\f"));
1967 obstack_grow_wstr (output
, LCST ("\\n"));
1970 obstack_grow_wstr (output
, LCST ("\\r"));
1973 obstack_grow_wstr (output
, LCST ("\\t"));
1976 obstack_grow_wstr (output
, LCST ("\\v"));
1980 if (wchar_printable (w
) && (!need_escape
|| (!gdb_iswdigit (w
)
1982 && w
!= LCST ('9'))))
1984 gdb_wchar_t wchar
= w
;
1986 if (w
== gdb_btowc (quoter
) || w
== LCST ('\\'))
1987 obstack_grow_wstr (output
, LCST ("\\"));
1988 obstack_grow (output
, &wchar
, sizeof (gdb_wchar_t
));
1994 for (i
= 0; i
+ width
<= orig_len
; i
+= width
)
1999 value
= extract_unsigned_integer (&orig
[i
], width
,
2001 /* If the value fits in 3 octal digits, print it that
2002 way. Otherwise, print it as a hex escape. */
2004 xsnprintf (octal
, sizeof (octal
), "\\%.3o",
2005 (int) (value
& 0777));
2007 xsnprintf (octal
, sizeof (octal
), "\\x%lx", (long) value
);
2008 append_string_as_wide (octal
, output
);
2010 /* If we somehow have extra bytes, print them now. */
2011 while (i
< orig_len
)
2015 xsnprintf (octal
, sizeof (octal
), "\\%.3o", orig
[i
] & 0xff);
2016 append_string_as_wide (octal
, output
);
2027 /* Print the character C on STREAM as part of the contents of a
2028 literal string whose delimiter is QUOTER. ENCODING names the
2032 generic_emit_char (int c
, struct type
*type
, struct ui_file
*stream
,
2033 int quoter
, const char *encoding
)
2035 enum bfd_endian byte_order
2036 = gdbarch_byte_order (get_type_arch (type
));
2037 struct obstack wchar_buf
, output
;
2038 struct cleanup
*cleanups
;
2040 struct wchar_iterator
*iter
;
2041 int need_escape
= 0;
2043 buf
= alloca (TYPE_LENGTH (type
));
2044 pack_long (buf
, type
, c
);
2046 iter
= make_wchar_iterator (buf
, TYPE_LENGTH (type
),
2047 encoding
, TYPE_LENGTH (type
));
2048 cleanups
= make_cleanup_wchar_iterator (iter
);
2050 /* This holds the printable form of the wchar_t data. */
2051 obstack_init (&wchar_buf
);
2052 make_cleanup_obstack_free (&wchar_buf
);
2058 const gdb_byte
*buf
;
2060 int print_escape
= 1;
2061 enum wchar_iterate_result result
;
2063 num_chars
= wchar_iterate (iter
, &result
, &chars
, &buf
, &buflen
);
2068 /* If all characters are printable, print them. Otherwise,
2069 we're going to have to print an escape sequence. We
2070 check all characters because we want to print the target
2071 bytes in the escape sequence, and we don't know character
2072 boundaries there. */
2076 for (i
= 0; i
< num_chars
; ++i
)
2077 if (!wchar_printable (chars
[i
]))
2085 for (i
= 0; i
< num_chars
; ++i
)
2086 print_wchar (chars
[i
], buf
, buflen
,
2087 TYPE_LENGTH (type
), byte_order
,
2088 &wchar_buf
, quoter
, &need_escape
);
2092 /* This handles the NUM_CHARS == 0 case as well. */
2094 print_wchar (gdb_WEOF
, buf
, buflen
, TYPE_LENGTH (type
),
2095 byte_order
, &wchar_buf
, quoter
, &need_escape
);
2098 /* The output in the host encoding. */
2099 obstack_init (&output
);
2100 make_cleanup_obstack_free (&output
);
2102 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2103 (gdb_byte
*) obstack_base (&wchar_buf
),
2104 obstack_object_size (&wchar_buf
),
2105 sizeof (gdb_wchar_t
), &output
, translit_char
);
2106 obstack_1grow (&output
, '\0');
2108 fputs_filtered (obstack_base (&output
), stream
);
2110 do_cleanups (cleanups
);
2113 /* Return the repeat count of the next character/byte in ITER,
2114 storing the result in VEC. */
2117 count_next_character (struct wchar_iterator
*iter
,
2118 VEC (converted_character_d
) **vec
)
2120 struct converted_character
*current
;
2122 if (VEC_empty (converted_character_d
, *vec
))
2124 struct converted_character tmp
;
2128 = wchar_iterate (iter
, &tmp
.result
, &chars
, &tmp
.buf
, &tmp
.buflen
);
2129 if (tmp
.num_chars
> 0)
2131 gdb_assert (tmp
.num_chars
< MAX_WCHARS
);
2132 memcpy (tmp
.chars
, chars
, tmp
.num_chars
* sizeof (gdb_wchar_t
));
2134 VEC_safe_push (converted_character_d
, *vec
, &tmp
);
2137 current
= VEC_last (converted_character_d
, *vec
);
2139 /* Count repeated characters or bytes. */
2140 current
->repeat_count
= 1;
2141 if (current
->num_chars
== -1)
2149 struct converted_character d
;
2156 /* Get the next character. */
2158 = wchar_iterate (iter
, &d
.result
, &chars
, &d
.buf
, &d
.buflen
);
2160 /* If a character was successfully converted, save the character
2161 into the converted character. */
2162 if (d
.num_chars
> 0)
2164 gdb_assert (d
.num_chars
< MAX_WCHARS
);
2165 memcpy (d
.chars
, chars
, WCHAR_BUFLEN (d
.num_chars
));
2168 /* Determine if the current character is the same as this
2170 if (d
.num_chars
== current
->num_chars
&& d
.result
== current
->result
)
2172 /* There are two cases to consider:
2174 1) Equality of converted character (num_chars > 0)
2175 2) Equality of non-converted character (num_chars == 0) */
2176 if ((current
->num_chars
> 0
2177 && memcmp (current
->chars
, d
.chars
,
2178 WCHAR_BUFLEN (current
->num_chars
)) == 0)
2179 || (current
->num_chars
== 0
2180 && current
->buflen
== d
.buflen
2181 && memcmp (current
->buf
, d
.buf
, current
->buflen
) == 0))
2182 ++current
->repeat_count
;
2190 /* Push this next converted character onto the result vector. */
2191 repeat
= current
->repeat_count
;
2192 VEC_safe_push (converted_character_d
, *vec
, &d
);
2197 /* Print the characters in CHARS to the OBSTACK. QUOTE_CHAR is the quote
2198 character to use with string output. WIDTH is the size of the output
2199 character type. BYTE_ORDER is the the target byte order. OPTIONS
2200 is the user's print options. */
2203 print_converted_chars_to_obstack (struct obstack
*obstack
,
2204 VEC (converted_character_d
) *chars
,
2205 int quote_char
, int width
,
2206 enum bfd_endian byte_order
,
2207 const struct value_print_options
*options
)
2210 struct converted_character
*elem
;
2211 enum {START
, SINGLE
, REPEAT
, INCOMPLETE
, FINISH
} state
, last
;
2212 gdb_wchar_t wide_quote_char
= gdb_btowc (quote_char
);
2213 int need_escape
= 0;
2215 /* Set the start state. */
2217 last
= state
= START
;
2225 /* Nothing to do. */
2232 /* We are outputting a single character
2233 (< options->repeat_count_threshold). */
2237 /* We were outputting some other type of content, so we
2238 must output and a comma and a quote. */
2240 obstack_grow_wstr (obstack
, LCST (", "));
2241 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2243 /* Output the character. */
2244 for (j
= 0; j
< elem
->repeat_count
; ++j
)
2246 if (elem
->result
== wchar_iterate_ok
)
2247 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2248 byte_order
, obstack
, quote_char
, &need_escape
);
2250 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2251 byte_order
, obstack
, quote_char
, &need_escape
);
2261 /* We are outputting a character with a repeat count
2262 greater than options->repeat_count_threshold. */
2266 /* We were outputting a single string. Terminate the
2268 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2271 obstack_grow_wstr (obstack
, LCST (", "));
2273 /* Output the character and repeat string. */
2274 obstack_grow_wstr (obstack
, LCST ("'"));
2275 if (elem
->result
== wchar_iterate_ok
)
2276 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2277 byte_order
, obstack
, quote_char
, &need_escape
);
2279 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2280 byte_order
, obstack
, quote_char
, &need_escape
);
2281 obstack_grow_wstr (obstack
, LCST ("'"));
2282 s
= xstrprintf (_(" <repeats %u times>"), elem
->repeat_count
);
2283 for (j
= 0; s
[j
]; ++j
)
2285 gdb_wchar_t w
= gdb_btowc (s
[j
]);
2286 obstack_grow (obstack
, &w
, sizeof (gdb_wchar_t
));
2293 /* We are outputting an incomplete sequence. */
2296 /* If we were outputting a string of SINGLE characters,
2297 terminate the quote. */
2298 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2301 obstack_grow_wstr (obstack
, LCST (", "));
2303 /* Output the incomplete sequence string. */
2304 obstack_grow_wstr (obstack
, LCST ("<incomplete sequence "));
2305 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
, byte_order
,
2306 obstack
, 0, &need_escape
);
2307 obstack_grow_wstr (obstack
, LCST (">"));
2309 /* We do not attempt to outupt anything after this. */
2314 /* All done. If we were outputting a string of SINGLE
2315 characters, the string must be terminated. Otherwise,
2316 REPEAT and INCOMPLETE are always left properly terminated. */
2318 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2323 /* Get the next element and state. */
2325 if (state
!= FINISH
)
2327 elem
= VEC_index (converted_character_d
, chars
, idx
++);
2328 switch (elem
->result
)
2330 case wchar_iterate_ok
:
2331 case wchar_iterate_invalid
:
2332 if (elem
->repeat_count
> options
->repeat_count_threshold
)
2338 case wchar_iterate_incomplete
:
2342 case wchar_iterate_eof
:
2350 /* Print the character string STRING, printing at most LENGTH
2351 characters. LENGTH is -1 if the string is nul terminated. TYPE is
2352 the type of each character. OPTIONS holds the printing options;
2353 printing stops early if the number hits print_max; repeat counts
2354 are printed as appropriate. Print ellipses at the end if we had to
2355 stop before printing LENGTH characters, or if FORCE_ELLIPSES.
2356 QUOTE_CHAR is the character to print at each end of the string. If
2357 C_STYLE_TERMINATOR is true, and the last character is 0, then it is
2361 generic_printstr (struct ui_file
*stream
, struct type
*type
,
2362 const gdb_byte
*string
, unsigned int length
,
2363 const char *encoding
, int force_ellipses
,
2364 int quote_char
, int c_style_terminator
,
2365 const struct value_print_options
*options
)
2367 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (type
));
2369 int width
= TYPE_LENGTH (type
);
2370 struct obstack wchar_buf
, output
;
2371 struct cleanup
*cleanup
;
2372 struct wchar_iterator
*iter
;
2374 struct converted_character
*last
;
2375 VEC (converted_character_d
) *converted_chars
;
2379 unsigned long current_char
= 1;
2381 for (i
= 0; current_char
; ++i
)
2384 current_char
= extract_unsigned_integer (string
+ i
* width
,
2390 /* If the string was not truncated due to `set print elements', and
2391 the last byte of it is a null, we don't print that, in
2392 traditional C style. */
2393 if (c_style_terminator
2396 && (extract_unsigned_integer (string
+ (length
- 1) * width
,
2397 width
, byte_order
) == 0))
2402 fputs_filtered ("\"\"", stream
);
2406 /* Arrange to iterate over the characters, in wchar_t form. */
2407 iter
= make_wchar_iterator (string
, length
* width
, encoding
, width
);
2408 cleanup
= make_cleanup_wchar_iterator (iter
);
2409 converted_chars
= NULL
;
2410 make_cleanup (VEC_cleanup (converted_character_d
), &converted_chars
);
2412 /* Convert characters until the string is over or the maximum
2413 number of printed characters has been reached. */
2415 while (i
< options
->print_max
)
2421 /* Grab the next character and repeat count. */
2422 r
= count_next_character (iter
, &converted_chars
);
2424 /* If less than zero, the end of the input string was reached. */
2428 /* Otherwise, add the count to the total print count and get
2429 the next character. */
2433 /* Get the last element and determine if the entire string was
2435 last
= VEC_last (converted_character_d
, converted_chars
);
2436 finished
= (last
->result
== wchar_iterate_eof
);
2438 /* Ensure that CONVERTED_CHARS is terminated. */
2439 last
->result
= wchar_iterate_eof
;
2441 /* WCHAR_BUF is the obstack we use to represent the string in
2443 obstack_init (&wchar_buf
);
2444 make_cleanup_obstack_free (&wchar_buf
);
2446 /* Print the output string to the obstack. */
2447 print_converted_chars_to_obstack (&wchar_buf
, converted_chars
, quote_char
,
2448 width
, byte_order
, options
);
2450 if (force_ellipses
|| !finished
)
2451 obstack_grow_wstr (&wchar_buf
, LCST ("..."));
2453 /* OUTPUT is where we collect `char's for printing. */
2454 obstack_init (&output
);
2455 make_cleanup_obstack_free (&output
);
2457 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2458 (gdb_byte
*) obstack_base (&wchar_buf
),
2459 obstack_object_size (&wchar_buf
),
2460 sizeof (gdb_wchar_t
), &output
, translit_char
);
2461 obstack_1grow (&output
, '\0');
2463 fputs_filtered (obstack_base (&output
), stream
);
2465 do_cleanups (cleanup
);
2468 /* Print a string from the inferior, starting at ADDR and printing up to LEN
2469 characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing
2470 stops at the first null byte, otherwise printing proceeds (including null
2471 bytes) until either print_max or LEN characters have been printed,
2472 whichever is smaller. ENCODING is the name of the string's
2473 encoding. It can be NULL, in which case the target encoding is
2477 val_print_string (struct type
*elttype
, const char *encoding
,
2478 CORE_ADDR addr
, int len
,
2479 struct ui_file
*stream
,
2480 const struct value_print_options
*options
)
2482 int force_ellipsis
= 0; /* Force ellipsis to be printed if nonzero. */
2483 int errcode
; /* Errno returned from bad reads. */
2484 int found_nul
; /* Non-zero if we found the nul char. */
2485 unsigned int fetchlimit
; /* Maximum number of chars to print. */
2487 gdb_byte
*buffer
= NULL
; /* Dynamically growable fetch buffer. */
2488 struct cleanup
*old_chain
= NULL
; /* Top of the old cleanup chain. */
2489 struct gdbarch
*gdbarch
= get_type_arch (elttype
);
2490 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
2491 int width
= TYPE_LENGTH (elttype
);
2493 /* First we need to figure out the limit on the number of characters we are
2494 going to attempt to fetch and print. This is actually pretty simple. If
2495 LEN >= zero, then the limit is the minimum of LEN and print_max. If
2496 LEN is -1, then the limit is print_max. This is true regardless of
2497 whether print_max is zero, UINT_MAX (unlimited), or something in between,
2498 because finding the null byte (or available memory) is what actually
2499 limits the fetch. */
2501 fetchlimit
= (len
== -1 ? options
->print_max
: min (len
,
2502 options
->print_max
));
2504 errcode
= read_string (addr
, len
, width
, fetchlimit
, byte_order
,
2505 &buffer
, &bytes_read
);
2506 old_chain
= make_cleanup (xfree
, buffer
);
2510 /* We now have either successfully filled the buffer to fetchlimit,
2511 or terminated early due to an error or finding a null char when
2514 /* Determine found_nul by looking at the last character read. */
2515 found_nul
= extract_unsigned_integer (buffer
+ bytes_read
- width
, width
,
2517 if (len
== -1 && !found_nul
)
2521 /* We didn't find a NUL terminator we were looking for. Attempt
2522 to peek at the next character. If not successful, or it is not
2523 a null byte, then force ellipsis to be printed. */
2525 peekbuf
= (gdb_byte
*) alloca (width
);
2527 if (target_read_memory (addr
, peekbuf
, width
) == 0
2528 && extract_unsigned_integer (peekbuf
, width
, byte_order
) != 0)
2531 else if ((len
>= 0 && errcode
!= 0) || (len
> bytes_read
/ width
))
2533 /* Getting an error when we have a requested length, or fetching less
2534 than the number of characters actually requested, always make us
2539 /* If we get an error before fetching anything, don't print a string.
2540 But if we fetch something and then get an error, print the string
2541 and then the error message. */
2542 if (errcode
== 0 || bytes_read
> 0)
2544 LA_PRINT_STRING (stream
, elttype
, buffer
, bytes_read
/ width
,
2545 encoding
, force_ellipsis
, options
);
2552 str
= memory_error_message (errcode
, gdbarch
, addr
);
2553 make_cleanup (xfree
, str
);
2555 fprintf_filtered (stream
, "<error: ");
2556 fputs_filtered (str
, stream
);
2557 fprintf_filtered (stream
, ">");
2561 do_cleanups (old_chain
);
2563 return (bytes_read
/ width
);
2567 /* The 'set input-radix' command writes to this auxiliary variable.
2568 If the requested radix is valid, INPUT_RADIX is updated; otherwise,
2569 it is left unchanged. */
2571 static unsigned input_radix_1
= 10;
2573 /* Validate an input or output radix setting, and make sure the user
2574 knows what they really did here. Radix setting is confusing, e.g.
2575 setting the input radix to "10" never changes it! */
2578 set_input_radix (char *args
, int from_tty
, struct cmd_list_element
*c
)
2580 set_input_radix_1 (from_tty
, input_radix_1
);
2584 set_input_radix_1 (int from_tty
, unsigned radix
)
2586 /* We don't currently disallow any input radix except 0 or 1, which don't
2587 make any mathematical sense. In theory, we can deal with any input
2588 radix greater than 1, even if we don't have unique digits for every
2589 value from 0 to radix-1, but in practice we lose on large radix values.
2590 We should either fix the lossage or restrict the radix range more.
2595 input_radix_1
= input_radix
;
2596 error (_("Nonsense input radix ``decimal %u''; input radix unchanged."),
2599 input_radix_1
= input_radix
= radix
;
2602 printf_filtered (_("Input radix now set to "
2603 "decimal %u, hex %x, octal %o.\n"),
2604 radix
, radix
, radix
);
2608 /* The 'set output-radix' command writes to this auxiliary variable.
2609 If the requested radix is valid, OUTPUT_RADIX is updated,
2610 otherwise, it is left unchanged. */
2612 static unsigned output_radix_1
= 10;
2615 set_output_radix (char *args
, int from_tty
, struct cmd_list_element
*c
)
2617 set_output_radix_1 (from_tty
, output_radix_1
);
2621 set_output_radix_1 (int from_tty
, unsigned radix
)
2623 /* Validate the radix and disallow ones that we aren't prepared to
2624 handle correctly, leaving the radix unchanged. */
2628 user_print_options
.output_format
= 'x'; /* hex */
2631 user_print_options
.output_format
= 0; /* decimal */
2634 user_print_options
.output_format
= 'o'; /* octal */
2637 output_radix_1
= output_radix
;
2638 error (_("Unsupported output radix ``decimal %u''; "
2639 "output radix unchanged."),
2642 output_radix_1
= output_radix
= radix
;
2645 printf_filtered (_("Output radix now set to "
2646 "decimal %u, hex %x, octal %o.\n"),
2647 radix
, radix
, radix
);
2651 /* Set both the input and output radix at once. Try to set the output radix
2652 first, since it has the most restrictive range. An radix that is valid as
2653 an output radix is also valid as an input radix.
2655 It may be useful to have an unusual input radix. If the user wishes to
2656 set an input radix that is not valid as an output radix, he needs to use
2657 the 'set input-radix' command. */
2660 set_radix (char *arg
, int from_tty
)
2664 radix
= (arg
== NULL
) ? 10 : parse_and_eval_long (arg
);
2665 set_output_radix_1 (0, radix
);
2666 set_input_radix_1 (0, radix
);
2669 printf_filtered (_("Input and output radices now set to "
2670 "decimal %u, hex %x, octal %o.\n"),
2671 radix
, radix
, radix
);
2675 /* Show both the input and output radices. */
2678 show_radix (char *arg
, int from_tty
)
2682 if (input_radix
== output_radix
)
2684 printf_filtered (_("Input and output radices set to "
2685 "decimal %u, hex %x, octal %o.\n"),
2686 input_radix
, input_radix
, input_radix
);
2690 printf_filtered (_("Input radix set to decimal "
2691 "%u, hex %x, octal %o.\n"),
2692 input_radix
, input_radix
, input_radix
);
2693 printf_filtered (_("Output radix set to decimal "
2694 "%u, hex %x, octal %o.\n"),
2695 output_radix
, output_radix
, output_radix
);
2702 set_print (char *arg
, int from_tty
)
2705 "\"set print\" must be followed by the name of a print subcommand.\n");
2706 help_list (setprintlist
, "set print ", all_commands
, gdb_stdout
);
2710 show_print (char *args
, int from_tty
)
2712 cmd_show_list (showprintlist
, from_tty
, "");
2716 set_print_raw (char *arg
, int from_tty
)
2719 "\"set print raw\" must be followed by the name of a \"print raw\" subcommand.\n");
2720 help_list (setprintrawlist
, "set print raw ", all_commands
, gdb_stdout
);
2724 show_print_raw (char *args
, int from_tty
)
2726 cmd_show_list (showprintrawlist
, from_tty
, "");
2731 _initialize_valprint (void)
2733 add_prefix_cmd ("print", no_class
, set_print
,
2734 _("Generic command for setting how things print."),
2735 &setprintlist
, "set print ", 0, &setlist
);
2736 add_alias_cmd ("p", "print", no_class
, 1, &setlist
);
2737 /* Prefer set print to set prompt. */
2738 add_alias_cmd ("pr", "print", no_class
, 1, &setlist
);
2740 add_prefix_cmd ("print", no_class
, show_print
,
2741 _("Generic command for showing print settings."),
2742 &showprintlist
, "show print ", 0, &showlist
);
2743 add_alias_cmd ("p", "print", no_class
, 1, &showlist
);
2744 add_alias_cmd ("pr", "print", no_class
, 1, &showlist
);
2746 add_prefix_cmd ("raw", no_class
, set_print_raw
,
2748 Generic command for setting what things to print in \"raw\" mode."),
2749 &setprintrawlist
, "set print raw ", 0, &setprintlist
);
2750 add_prefix_cmd ("raw", no_class
, show_print_raw
,
2751 _("Generic command for showing \"print raw\" settings."),
2752 &showprintrawlist
, "show print raw ", 0, &showprintlist
);
2754 add_setshow_uinteger_cmd ("elements", no_class
,
2755 &user_print_options
.print_max
, _("\
2756 Set limit on string chars or array elements to print."), _("\
2757 Show limit on string chars or array elements to print."), _("\
2758 \"set print elements unlimited\" causes there to be no limit."),
2761 &setprintlist
, &showprintlist
);
2763 add_setshow_boolean_cmd ("null-stop", no_class
,
2764 &user_print_options
.stop_print_at_null
, _("\
2765 Set printing of char arrays to stop at first null char."), _("\
2766 Show printing of char arrays to stop at first null char."), NULL
,
2768 show_stop_print_at_null
,
2769 &setprintlist
, &showprintlist
);
2771 add_setshow_uinteger_cmd ("repeats", no_class
,
2772 &user_print_options
.repeat_count_threshold
, _("\
2773 Set threshold for repeated print elements."), _("\
2774 Show threshold for repeated print elements."), _("\
2775 \"set print repeats unlimited\" causes all elements to be individually printed."),
2777 show_repeat_count_threshold
,
2778 &setprintlist
, &showprintlist
);
2780 add_setshow_boolean_cmd ("pretty", class_support
,
2781 &user_print_options
.prettyformat_structs
, _("\
2782 Set pretty formatting of structures."), _("\
2783 Show pretty formatting of structures."), NULL
,
2785 show_prettyformat_structs
,
2786 &setprintlist
, &showprintlist
);
2788 add_setshow_boolean_cmd ("union", class_support
,
2789 &user_print_options
.unionprint
, _("\
2790 Set printing of unions interior to structures."), _("\
2791 Show printing of unions interior to structures."), NULL
,
2794 &setprintlist
, &showprintlist
);
2796 add_setshow_boolean_cmd ("array", class_support
,
2797 &user_print_options
.prettyformat_arrays
, _("\
2798 Set pretty formatting of arrays."), _("\
2799 Show pretty formatting of arrays."), NULL
,
2801 show_prettyformat_arrays
,
2802 &setprintlist
, &showprintlist
);
2804 add_setshow_boolean_cmd ("address", class_support
,
2805 &user_print_options
.addressprint
, _("\
2806 Set printing of addresses."), _("\
2807 Show printing of addresses."), NULL
,
2810 &setprintlist
, &showprintlist
);
2812 add_setshow_boolean_cmd ("symbol", class_support
,
2813 &user_print_options
.symbol_print
, _("\
2814 Set printing of symbol names when printing pointers."), _("\
2815 Show printing of symbol names when printing pointers."),
2818 &setprintlist
, &showprintlist
);
2820 add_setshow_zuinteger_cmd ("input-radix", class_support
, &input_radix_1
,
2822 Set default input radix for entering numbers."), _("\
2823 Show default input radix for entering numbers."), NULL
,
2826 &setlist
, &showlist
);
2828 add_setshow_zuinteger_cmd ("output-radix", class_support
, &output_radix_1
,
2830 Set default output radix for printing of values."), _("\
2831 Show default output radix for printing of values."), NULL
,
2834 &setlist
, &showlist
);
2836 /* The "set radix" and "show radix" commands are special in that
2837 they are like normal set and show commands but allow two normally
2838 independent variables to be either set or shown with a single
2839 command. So the usual deprecated_add_set_cmd() and [deleted]
2840 add_show_from_set() commands aren't really appropriate. */
2841 /* FIXME: i18n: With the new add_setshow_integer command, that is no
2842 longer true - show can display anything. */
2843 add_cmd ("radix", class_support
, set_radix
, _("\
2844 Set default input and output number radices.\n\
2845 Use 'set input-radix' or 'set output-radix' to independently set each.\n\
2846 Without an argument, sets both radices back to the default value of 10."),
2848 add_cmd ("radix", class_support
, show_radix
, _("\
2849 Show the default input and output number radices.\n\
2850 Use 'show input-radix' or 'show output-radix' to independently show each."),
2853 add_setshow_boolean_cmd ("array-indexes", class_support
,
2854 &user_print_options
.print_array_indexes
, _("\
2855 Set printing of array indexes."), _("\
2856 Show printing of array indexes"), NULL
, NULL
, show_print_array_indexes
,
2857 &setprintlist
, &showprintlist
);