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 /* generic_val_print helper for TYPE_CODE_DECFLOAT. */
732 generic_val_print_decfloat (struct type
*type
, const gdb_byte
*valaddr
,
733 int embedded_offset
, struct ui_file
*stream
,
734 const struct value
*original_value
,
735 const struct value_print_options
*options
)
738 val_print_scalar_formatted (type
, valaddr
, embedded_offset
, original_value
,
741 print_decimal_floating (valaddr
+ embedded_offset
, type
, stream
);
744 /* generic_val_print helper for TYPE_CODE_COMPLEX. */
747 generic_val_print_complex (struct type
*type
, const gdb_byte
*valaddr
,
748 int embedded_offset
, struct ui_file
*stream
,
749 const struct value
*original_value
,
750 const struct value_print_options
*options
,
751 const struct generic_val_print_decorations
754 fprintf_filtered (stream
, "%s", decorations
->complex_prefix
);
756 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
), valaddr
,
757 embedded_offset
, original_value
, options
, 0,
760 print_floating (valaddr
+ embedded_offset
, TYPE_TARGET_TYPE (type
),
762 fprintf_filtered (stream
, "%s", decorations
->complex_infix
);
764 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
), valaddr
,
766 + TYPE_LENGTH (TYPE_TARGET_TYPE (type
)),
767 original_value
, options
, 0, stream
);
769 print_floating (valaddr
+ embedded_offset
770 + TYPE_LENGTH (TYPE_TARGET_TYPE (type
)),
771 TYPE_TARGET_TYPE (type
), stream
);
772 fprintf_filtered (stream
, "%s", decorations
->complex_suffix
);
775 /* A generic val_print that is suitable for use by language
776 implementations of the la_val_print method. This function can
777 handle most type codes, though not all, notably exception
778 TYPE_CODE_UNION and TYPE_CODE_STRUCT, which must be implemented by
781 Most arguments are as to val_print.
783 The additional DECORATIONS argument can be used to customize the
784 output in some small, language-specific ways. */
787 generic_val_print (struct type
*type
, const gdb_byte
*valaddr
,
788 int embedded_offset
, CORE_ADDR address
,
789 struct ui_file
*stream
, int recurse
,
790 const struct value
*original_value
,
791 const struct value_print_options
*options
,
792 const struct generic_val_print_decorations
*decorations
)
794 struct type
*unresolved_type
= type
;
796 type
= check_typedef (type
);
797 switch (TYPE_CODE (type
))
799 case TYPE_CODE_ARRAY
:
800 generic_val_print_array (type
, valaddr
, embedded_offset
, address
, stream
,
801 recurse
, original_value
, options
);
804 case TYPE_CODE_MEMBERPTR
:
805 generic_val_print_memberptr (type
, valaddr
, embedded_offset
, stream
,
806 original_value
, options
);
810 generic_val_print_ptr (type
, valaddr
, embedded_offset
, stream
,
811 original_value
, options
);
815 generic_val_print_ref (type
, valaddr
, embedded_offset
, stream
, recurse
,
816 original_value
, options
);
820 generic_val_print_enum (type
, valaddr
, embedded_offset
, stream
,
821 original_value
, options
);
824 case TYPE_CODE_FLAGS
:
825 generic_val_print_flags (type
, valaddr
, embedded_offset
, stream
,
826 original_value
, options
);
830 case TYPE_CODE_METHOD
:
831 generic_val_print_func (type
, valaddr
, embedded_offset
, address
, stream
,
832 original_value
, options
);
836 generic_val_print_bool (type
, valaddr
, embedded_offset
, stream
,
837 original_value
, options
, decorations
);
840 case TYPE_CODE_RANGE
:
841 /* FIXME: create_static_range_type does not set the unsigned bit in a
842 range type (I think it probably should copy it from the
843 target type), so we won't print values which are too large to
844 fit in a signed integer correctly. */
845 /* FIXME: Doesn't handle ranges of enums correctly. (Can't just
846 print with the target type, though, because the size of our
847 type and the target type might differ). */
852 generic_val_print_int (type
, valaddr
, embedded_offset
, stream
,
853 original_value
, options
);
857 generic_val_print_char (type
, unresolved_type
, valaddr
, embedded_offset
,
858 stream
, original_value
, options
);
862 generic_val_print_float (type
, valaddr
, embedded_offset
, stream
,
863 original_value
, options
);
866 case TYPE_CODE_DECFLOAT
:
867 generic_val_print_decfloat (type
, valaddr
, embedded_offset
, stream
,
868 original_value
, options
);
872 fputs_filtered (decorations
->void_name
, stream
);
875 case TYPE_CODE_ERROR
:
876 fprintf_filtered (stream
, "%s", TYPE_ERROR_NAME (type
));
879 case TYPE_CODE_UNDEF
:
880 /* This happens (without TYPE_FLAG_STUB set) on systems which
881 don't use dbx xrefs (NO_DBX_XREFS in gcc) if a file has a
882 "struct foo *bar" and no complete type for struct foo in that
884 fprintf_filtered (stream
, _("<incomplete type>"));
887 case TYPE_CODE_COMPLEX
:
888 generic_val_print_complex (type
, valaddr
, embedded_offset
, stream
,
889 original_value
, options
, decorations
);
892 case TYPE_CODE_UNION
:
893 case TYPE_CODE_STRUCT
:
894 case TYPE_CODE_METHODPTR
:
896 error (_("Unhandled type code %d in symbol table."),
902 /* Print using the given LANGUAGE the data of type TYPE located at
903 VALADDR + EMBEDDED_OFFSET (within GDB), which came from the
904 inferior at address ADDRESS + EMBEDDED_OFFSET, onto stdio stream
905 STREAM according to OPTIONS. VAL is the whole object that came
906 from ADDRESS. VALADDR must point to the head of VAL's contents
909 The language printers will pass down an adjusted EMBEDDED_OFFSET to
910 further helper subroutines as subfields of TYPE are printed. In
911 such cases, VALADDR is passed down unadjusted, as well as VAL, so
912 that VAL can be queried for metadata about the contents data being
913 printed, using EMBEDDED_OFFSET as an offset into VAL's contents
914 buffer. For example: "has this field been optimized out", or "I'm
915 printing an object while inspecting a traceframe; has this
916 particular piece of data been collected?".
918 RECURSE indicates the amount of indentation to supply before
919 continuation lines; this amount is roughly twice the value of
923 val_print (struct type
*type
, const gdb_byte
*valaddr
, int embedded_offset
,
924 CORE_ADDR address
, struct ui_file
*stream
, int recurse
,
925 const struct value
*val
,
926 const struct value_print_options
*options
,
927 const struct language_defn
*language
)
930 struct value_print_options local_opts
= *options
;
931 struct type
*real_type
= check_typedef (type
);
933 if (local_opts
.prettyformat
== Val_prettyformat_default
)
934 local_opts
.prettyformat
= (local_opts
.prettyformat_structs
935 ? Val_prettyformat
: Val_no_prettyformat
);
939 /* Ensure that the type is complete and not just a stub. If the type is
940 only a stub and we can't find and substitute its complete type, then
941 print appropriate string and return. */
943 if (TYPE_STUB (real_type
))
945 fprintf_filtered (stream
, _("<incomplete type>"));
950 if (!valprint_check_validity (stream
, real_type
, embedded_offset
, val
))
955 ret
= apply_ext_lang_val_pretty_printer (type
, valaddr
, embedded_offset
,
956 address
, stream
, recurse
,
957 val
, options
, language
);
962 /* Handle summary mode. If the value is a scalar, print it;
963 otherwise, print an ellipsis. */
964 if (options
->summary
&& !val_print_scalar_type_p (type
))
966 fprintf_filtered (stream
, "...");
972 language
->la_val_print (type
, valaddr
, embedded_offset
, address
,
973 stream
, recurse
, val
,
976 CATCH (except
, RETURN_MASK_ERROR
)
978 fprintf_filtered (stream
, _("<error reading variable>"));
983 /* Check whether the value VAL is printable. Return 1 if it is;
984 return 0 and print an appropriate error message to STREAM according to
985 OPTIONS if it is not. */
988 value_check_printable (struct value
*val
, struct ui_file
*stream
,
989 const struct value_print_options
*options
)
993 fprintf_filtered (stream
, _("<address of value unknown>"));
997 if (value_entirely_optimized_out (val
))
999 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1000 fprintf_filtered (stream
, "...");
1002 val_print_optimized_out (val
, stream
);
1006 if (value_entirely_unavailable (val
))
1008 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1009 fprintf_filtered (stream
, "...");
1011 val_print_unavailable (stream
);
1015 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_INTERNAL_FUNCTION
)
1017 fprintf_filtered (stream
, _("<internal function %s>"),
1018 value_internal_function_name (val
));
1025 /* Print using the given LANGUAGE the value VAL onto stream STREAM according
1028 This is a preferable interface to val_print, above, because it uses
1029 GDB's value mechanism. */
1032 common_val_print (struct value
*val
, struct ui_file
*stream
, int recurse
,
1033 const struct value_print_options
*options
,
1034 const struct language_defn
*language
)
1036 if (!value_check_printable (val
, stream
, options
))
1039 if (language
->la_language
== language_ada
)
1040 /* The value might have a dynamic type, which would cause trouble
1041 below when trying to extract the value contents (since the value
1042 size is determined from the type size which is unknown). So
1043 get a fixed representation of our value. */
1044 val
= ada_to_fixed_value (val
);
1046 val_print (value_type (val
), value_contents_for_printing (val
),
1047 value_embedded_offset (val
), value_address (val
),
1049 val
, options
, language
);
1052 /* Print on stream STREAM the value VAL according to OPTIONS. The value
1053 is printed using the current_language syntax. */
1056 value_print (struct value
*val
, struct ui_file
*stream
,
1057 const struct value_print_options
*options
)
1059 if (!value_check_printable (val
, stream
, options
))
1065 = apply_ext_lang_val_pretty_printer (value_type (val
),
1066 value_contents_for_printing (val
),
1067 value_embedded_offset (val
),
1068 value_address (val
),
1070 val
, options
, current_language
);
1076 LA_VALUE_PRINT (val
, stream
, options
);
1079 /* Called by various <lang>_val_print routines to print
1080 TYPE_CODE_INT's. TYPE is the type. VALADDR is the address of the
1081 value. STREAM is where to print the value. */
1084 val_print_type_code_int (struct type
*type
, const gdb_byte
*valaddr
,
1085 struct ui_file
*stream
)
1087 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (type
));
1089 if (TYPE_LENGTH (type
) > sizeof (LONGEST
))
1093 if (TYPE_UNSIGNED (type
)
1094 && extract_long_unsigned_integer (valaddr
, TYPE_LENGTH (type
),
1097 print_longest (stream
, 'u', 0, val
);
1101 /* Signed, or we couldn't turn an unsigned value into a
1102 LONGEST. For signed values, one could assume two's
1103 complement (a reasonable assumption, I think) and do
1104 better than this. */
1105 print_hex_chars (stream
, (unsigned char *) valaddr
,
1106 TYPE_LENGTH (type
), byte_order
);
1111 print_longest (stream
, TYPE_UNSIGNED (type
) ? 'u' : 'd', 0,
1112 unpack_long (type
, valaddr
));
1117 val_print_type_code_flags (struct type
*type
, const gdb_byte
*valaddr
,
1118 struct ui_file
*stream
)
1120 ULONGEST val
= unpack_long (type
, valaddr
);
1121 int bitpos
, nfields
= TYPE_NFIELDS (type
);
1123 fputs_filtered ("[ ", stream
);
1124 for (bitpos
= 0; bitpos
< nfields
; bitpos
++)
1126 if (TYPE_FIELD_BITPOS (type
, bitpos
) != -1
1127 && (val
& ((ULONGEST
)1 << bitpos
)))
1129 if (TYPE_FIELD_NAME (type
, bitpos
))
1130 fprintf_filtered (stream
, "%s ", TYPE_FIELD_NAME (type
, bitpos
));
1132 fprintf_filtered (stream
, "#%d ", bitpos
);
1135 fputs_filtered ("]", stream
);
1138 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
1139 according to OPTIONS and SIZE on STREAM. Format i is not supported
1142 This is how the elements of an array or structure are printed
1146 val_print_scalar_formatted (struct type
*type
,
1147 const gdb_byte
*valaddr
, int embedded_offset
,
1148 const struct value
*val
,
1149 const struct value_print_options
*options
,
1151 struct ui_file
*stream
)
1153 gdb_assert (val
!= NULL
);
1154 gdb_assert (valaddr
== value_contents_for_printing_const (val
));
1156 /* If we get here with a string format, try again without it. Go
1157 all the way back to the language printers, which may call us
1159 if (options
->format
== 's')
1161 struct value_print_options opts
= *options
;
1164 val_print (type
, valaddr
, embedded_offset
, 0, stream
, 0, val
, &opts
,
1169 /* A scalar object that does not have all bits available can't be
1170 printed, because all bits contribute to its representation. */
1171 if (value_bits_any_optimized_out (val
,
1172 TARGET_CHAR_BIT
* embedded_offset
,
1173 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
1174 val_print_optimized_out (val
, stream
);
1175 else if (!value_bytes_available (val
, embedded_offset
, TYPE_LENGTH (type
)))
1176 val_print_unavailable (stream
);
1178 print_scalar_formatted (valaddr
+ embedded_offset
, type
,
1179 options
, size
, stream
);
1182 /* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g.
1183 The raison d'etre of this function is to consolidate printing of
1184 LONG_LONG's into this one function. The format chars b,h,w,g are
1185 from print_scalar_formatted(). Numbers are printed using C
1188 USE_C_FORMAT means to use C format in all cases. Without it,
1189 'o' and 'x' format do not include the standard C radix prefix
1192 Hilfinger/2004-09-09: USE_C_FORMAT was originally called USE_LOCAL
1193 and was intended to request formating according to the current
1194 language and would be used for most integers that GDB prints. The
1195 exceptional cases were things like protocols where the format of
1196 the integer is a protocol thing, not a user-visible thing). The
1197 parameter remains to preserve the information of what things might
1198 be printed with language-specific format, should we ever resurrect
1202 print_longest (struct ui_file
*stream
, int format
, int use_c_format
,
1210 val
= int_string (val_long
, 10, 1, 0, 1); break;
1212 val
= int_string (val_long
, 10, 0, 0, 1); break;
1214 val
= int_string (val_long
, 16, 0, 0, use_c_format
); break;
1216 val
= int_string (val_long
, 16, 0, 2, 1); break;
1218 val
= int_string (val_long
, 16, 0, 4, 1); break;
1220 val
= int_string (val_long
, 16, 0, 8, 1); break;
1222 val
= int_string (val_long
, 16, 0, 16, 1); break;
1225 val
= int_string (val_long
, 8, 0, 0, use_c_format
); break;
1227 internal_error (__FILE__
, __LINE__
,
1228 _("failed internal consistency check"));
1230 fputs_filtered (val
, stream
);
1233 /* This used to be a macro, but I don't think it is called often enough
1234 to merit such treatment. */
1235 /* Convert a LONGEST to an int. This is used in contexts (e.g. number of
1236 arguments to a function, number in a value history, register number, etc.)
1237 where the value must not be larger than can fit in an int. */
1240 longest_to_int (LONGEST arg
)
1242 /* Let the compiler do the work. */
1243 int rtnval
= (int) arg
;
1245 /* Check for overflows or underflows. */
1246 if (sizeof (LONGEST
) > sizeof (int))
1250 error (_("Value out of range."));
1256 /* Print a floating point value of type TYPE (not always a
1257 TYPE_CODE_FLT), pointed to in GDB by VALADDR, on STREAM. */
1260 print_floating (const gdb_byte
*valaddr
, struct type
*type
,
1261 struct ui_file
*stream
)
1265 const struct floatformat
*fmt
= NULL
;
1266 unsigned len
= TYPE_LENGTH (type
);
1267 enum float_kind kind
;
1269 /* If it is a floating-point, check for obvious problems. */
1270 if (TYPE_CODE (type
) == TYPE_CODE_FLT
)
1271 fmt
= floatformat_from_type (type
);
1274 kind
= floatformat_classify (fmt
, valaddr
);
1275 if (kind
== float_nan
)
1277 if (floatformat_is_negative (fmt
, valaddr
))
1278 fprintf_filtered (stream
, "-");
1279 fprintf_filtered (stream
, "nan(");
1280 fputs_filtered ("0x", stream
);
1281 fputs_filtered (floatformat_mantissa (fmt
, valaddr
), stream
);
1282 fprintf_filtered (stream
, ")");
1285 else if (kind
== float_infinite
)
1287 if (floatformat_is_negative (fmt
, valaddr
))
1288 fputs_filtered ("-", stream
);
1289 fputs_filtered ("inf", stream
);
1294 /* NOTE: cagney/2002-01-15: The TYPE passed into print_floating()
1295 isn't necessarily a TYPE_CODE_FLT. Consequently, unpack_double
1296 needs to be used as that takes care of any necessary type
1297 conversions. Such conversions are of course direct to DOUBLEST
1298 and disregard any possible target floating point limitations.
1299 For instance, a u64 would be converted and displayed exactly on a
1300 host with 80 bit DOUBLEST but with loss of information on a host
1301 with 64 bit DOUBLEST. */
1303 doub
= unpack_double (type
, valaddr
, &inv
);
1306 fprintf_filtered (stream
, "<invalid float value>");
1310 /* FIXME: kettenis/2001-01-20: The following code makes too much
1311 assumptions about the host and target floating point format. */
1313 /* NOTE: cagney/2002-02-03: Since the TYPE of what was passed in may
1314 not necessarily be a TYPE_CODE_FLT, the below ignores that and
1315 instead uses the type's length to determine the precision of the
1316 floating-point value being printed. */
1318 if (len
< sizeof (double))
1319 fprintf_filtered (stream
, "%.9g", (double) doub
);
1320 else if (len
== sizeof (double))
1321 fprintf_filtered (stream
, "%.17g", (double) doub
);
1323 #ifdef PRINTF_HAS_LONG_DOUBLE
1324 fprintf_filtered (stream
, "%.35Lg", doub
);
1326 /* This at least wins with values that are representable as
1328 fprintf_filtered (stream
, "%.17g", (double) doub
);
1333 print_decimal_floating (const gdb_byte
*valaddr
, struct type
*type
,
1334 struct ui_file
*stream
)
1336 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (type
));
1337 char decstr
[MAX_DECIMAL_STRING
];
1338 unsigned len
= TYPE_LENGTH (type
);
1340 decimal_to_string (valaddr
, len
, byte_order
, decstr
);
1341 fputs_filtered (decstr
, stream
);
1346 print_binary_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1347 unsigned len
, enum bfd_endian byte_order
)
1350 #define BITS_IN_BYTES 8
1356 /* Declared "int" so it will be signed.
1357 This ensures that right shift will shift in zeros. */
1359 const int mask
= 0x080;
1361 /* FIXME: We should be not printing leading zeroes in most cases. */
1363 if (byte_order
== BFD_ENDIAN_BIG
)
1369 /* Every byte has 8 binary characters; peel off
1370 and print from the MSB end. */
1372 for (i
= 0; i
< (BITS_IN_BYTES
* sizeof (*p
)); i
++)
1374 if (*p
& (mask
>> i
))
1379 fprintf_filtered (stream
, "%1d", b
);
1385 for (p
= valaddr
+ len
- 1;
1389 for (i
= 0; i
< (BITS_IN_BYTES
* sizeof (*p
)); i
++)
1391 if (*p
& (mask
>> i
))
1396 fprintf_filtered (stream
, "%1d", b
);
1402 /* VALADDR points to an integer of LEN bytes.
1403 Print it in octal on stream or format it in buf. */
1406 print_octal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1407 unsigned len
, enum bfd_endian byte_order
)
1410 unsigned char octa1
, octa2
, octa3
, carry
;
1413 /* FIXME: We should be not printing leading zeroes in most cases. */
1416 /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track
1417 * the extra bits, which cycle every three bytes:
1419 * Byte side: 0 1 2 3
1421 * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 |
1423 * Octal side: 0 1 carry 3 4 carry ...
1425 * Cycle number: 0 1 2
1427 * But of course we are printing from the high side, so we have to
1428 * figure out where in the cycle we are so that we end up with no
1429 * left over bits at the end.
1431 #define BITS_IN_OCTAL 3
1432 #define HIGH_ZERO 0340
1433 #define LOW_ZERO 0016
1434 #define CARRY_ZERO 0003
1435 #define HIGH_ONE 0200
1436 #define MID_ONE 0160
1437 #define LOW_ONE 0016
1438 #define CARRY_ONE 0001
1439 #define HIGH_TWO 0300
1440 #define MID_TWO 0070
1441 #define LOW_TWO 0007
1443 /* For 32 we start in cycle 2, with two bits and one bit carry;
1444 for 64 in cycle in cycle 1, with one bit and a two bit carry. */
1446 cycle
= (len
* BITS_IN_BYTES
) % BITS_IN_OCTAL
;
1449 fputs_filtered ("0", stream
);
1450 if (byte_order
== BFD_ENDIAN_BIG
)
1459 /* No carry in, carry out two bits. */
1461 octa1
= (HIGH_ZERO
& *p
) >> 5;
1462 octa2
= (LOW_ZERO
& *p
) >> 2;
1463 carry
= (CARRY_ZERO
& *p
);
1464 fprintf_filtered (stream
, "%o", octa1
);
1465 fprintf_filtered (stream
, "%o", octa2
);
1469 /* Carry in two bits, carry out one bit. */
1471 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1472 octa2
= (MID_ONE
& *p
) >> 4;
1473 octa3
= (LOW_ONE
& *p
) >> 1;
1474 carry
= (CARRY_ONE
& *p
);
1475 fprintf_filtered (stream
, "%o", octa1
);
1476 fprintf_filtered (stream
, "%o", octa2
);
1477 fprintf_filtered (stream
, "%o", octa3
);
1481 /* Carry in one bit, no carry out. */
1483 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1484 octa2
= (MID_TWO
& *p
) >> 3;
1485 octa3
= (LOW_TWO
& *p
);
1487 fprintf_filtered (stream
, "%o", octa1
);
1488 fprintf_filtered (stream
, "%o", octa2
);
1489 fprintf_filtered (stream
, "%o", octa3
);
1493 error (_("Internal error in octal conversion;"));
1497 cycle
= cycle
% BITS_IN_OCTAL
;
1502 for (p
= valaddr
+ len
- 1;
1509 /* Carry out, no carry in */
1511 octa1
= (HIGH_ZERO
& *p
) >> 5;
1512 octa2
= (LOW_ZERO
& *p
) >> 2;
1513 carry
= (CARRY_ZERO
& *p
);
1514 fprintf_filtered (stream
, "%o", octa1
);
1515 fprintf_filtered (stream
, "%o", octa2
);
1519 /* Carry in, carry out */
1521 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1522 octa2
= (MID_ONE
& *p
) >> 4;
1523 octa3
= (LOW_ONE
& *p
) >> 1;
1524 carry
= (CARRY_ONE
& *p
);
1525 fprintf_filtered (stream
, "%o", octa1
);
1526 fprintf_filtered (stream
, "%o", octa2
);
1527 fprintf_filtered (stream
, "%o", octa3
);
1531 /* Carry in, no carry out */
1533 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1534 octa2
= (MID_TWO
& *p
) >> 3;
1535 octa3
= (LOW_TWO
& *p
);
1537 fprintf_filtered (stream
, "%o", octa1
);
1538 fprintf_filtered (stream
, "%o", octa2
);
1539 fprintf_filtered (stream
, "%o", octa3
);
1543 error (_("Internal error in octal conversion;"));
1547 cycle
= cycle
% BITS_IN_OCTAL
;
1553 /* VALADDR points to an integer of LEN bytes.
1554 Print it in decimal on stream or format it in buf. */
1557 print_decimal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1558 unsigned len
, enum bfd_endian byte_order
)
1561 #define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */
1562 #define CARRY_LEFT( x ) ((x) % TEN)
1563 #define SHIFT( x ) ((x) << 4)
1564 #define LOW_NIBBLE( x ) ( (x) & 0x00F)
1565 #define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4)
1568 unsigned char *digits
;
1571 int i
, j
, decimal_digits
;
1575 /* Base-ten number is less than twice as many digits
1576 as the base 16 number, which is 2 digits per byte. */
1578 decimal_len
= len
* 2 * 2;
1579 digits
= xmalloc (decimal_len
);
1581 for (i
= 0; i
< decimal_len
; i
++)
1586 /* Ok, we have an unknown number of bytes of data to be printed in
1589 * Given a hex number (in nibbles) as XYZ, we start by taking X and
1590 * decemalizing it as "x1 x2" in two decimal nibbles. Then we multiply
1591 * the nibbles by 16, add Y and re-decimalize. Repeat with Z.
1593 * The trick is that "digits" holds a base-10 number, but sometimes
1594 * the individual digits are > 10.
1596 * Outer loop is per nibble (hex digit) of input, from MSD end to
1599 decimal_digits
= 0; /* Number of decimal digits so far */
1600 p
= (byte_order
== BFD_ENDIAN_BIG
) ? valaddr
: valaddr
+ len
- 1;
1602 while ((byte_order
== BFD_ENDIAN_BIG
) ? (p
< valaddr
+ len
) : (p
>= valaddr
))
1605 * Multiply current base-ten number by 16 in place.
1606 * Each digit was between 0 and 9, now is between
1609 for (j
= 0; j
< decimal_digits
; j
++)
1611 digits
[j
] = SHIFT (digits
[j
]);
1614 /* Take the next nibble off the input and add it to what
1615 * we've got in the LSB position. Bottom 'digit' is now
1616 * between 0 and 159.
1618 * "flip" is used to run this loop twice for each byte.
1622 /* Take top nibble. */
1624 digits
[0] += HIGH_NIBBLE (*p
);
1629 /* Take low nibble and bump our pointer "p". */
1631 digits
[0] += LOW_NIBBLE (*p
);
1632 if (byte_order
== BFD_ENDIAN_BIG
)
1639 /* Re-decimalize. We have to do this often enough
1640 * that we don't overflow, but once per nibble is
1641 * overkill. Easier this way, though. Note that the
1642 * carry is often larger than 10 (e.g. max initial
1643 * carry out of lowest nibble is 15, could bubble all
1644 * the way up greater than 10). So we have to do
1645 * the carrying beyond the last current digit.
1648 for (j
= 0; j
< decimal_len
- 1; j
++)
1652 /* "/" won't handle an unsigned char with
1653 * a value that if signed would be negative.
1654 * So extend to longword int via "dummy".
1657 carry
= CARRY_OUT (dummy
);
1658 digits
[j
] = CARRY_LEFT (dummy
);
1660 if (j
>= decimal_digits
&& carry
== 0)
1663 * All higher digits are 0 and we
1664 * no longer have a carry.
1666 * Note: "j" is 0-based, "decimal_digits" is
1669 decimal_digits
= j
+ 1;
1675 /* Ok, now "digits" is the decimal representation, with
1676 the "decimal_digits" actual digits. Print! */
1678 for (i
= decimal_digits
- 1; i
>= 0; i
--)
1680 fprintf_filtered (stream
, "%1d", digits
[i
]);
1685 /* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */
1688 print_hex_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1689 unsigned len
, enum bfd_endian byte_order
)
1693 /* FIXME: We should be not printing leading zeroes in most cases. */
1695 fputs_filtered ("0x", stream
);
1696 if (byte_order
== BFD_ENDIAN_BIG
)
1702 fprintf_filtered (stream
, "%02x", *p
);
1707 for (p
= valaddr
+ len
- 1;
1711 fprintf_filtered (stream
, "%02x", *p
);
1716 /* VALADDR points to a char integer of LEN bytes.
1717 Print it out in appropriate language form on stream.
1718 Omit any leading zero chars. */
1721 print_char_chars (struct ui_file
*stream
, struct type
*type
,
1722 const gdb_byte
*valaddr
,
1723 unsigned len
, enum bfd_endian byte_order
)
1727 if (byte_order
== BFD_ENDIAN_BIG
)
1730 while (p
< valaddr
+ len
- 1 && *p
== 0)
1733 while (p
< valaddr
+ len
)
1735 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
1741 p
= valaddr
+ len
- 1;
1742 while (p
> valaddr
&& *p
== 0)
1745 while (p
>= valaddr
)
1747 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
1753 /* Print function pointer with inferior address ADDRESS onto stdio
1757 print_function_pointer_address (const struct value_print_options
*options
,
1758 struct gdbarch
*gdbarch
,
1760 struct ui_file
*stream
)
1763 = gdbarch_convert_from_func_ptr_addr (gdbarch
, address
,
1766 /* If the function pointer is represented by a description, print
1767 the address of the description. */
1768 if (options
->addressprint
&& func_addr
!= address
)
1770 fputs_filtered ("@", stream
);
1771 fputs_filtered (paddress (gdbarch
, address
), stream
);
1772 fputs_filtered (": ", stream
);
1774 print_address_demangle (options
, gdbarch
, func_addr
, stream
, demangle
);
1778 /* Print on STREAM using the given OPTIONS the index for the element
1779 at INDEX of an array whose index type is INDEX_TYPE. */
1782 maybe_print_array_index (struct type
*index_type
, LONGEST index
,
1783 struct ui_file
*stream
,
1784 const struct value_print_options
*options
)
1786 struct value
*index_value
;
1788 if (!options
->print_array_indexes
)
1791 index_value
= value_from_longest (index_type
, index
);
1793 LA_PRINT_ARRAY_INDEX (index_value
, stream
, options
);
1796 /* Called by various <lang>_val_print routines to print elements of an
1797 array in the form "<elem1>, <elem2>, <elem3>, ...".
1799 (FIXME?) Assumes array element separator is a comma, which is correct
1800 for all languages currently handled.
1801 (FIXME?) Some languages have a notation for repeated array elements,
1802 perhaps we should try to use that notation when appropriate. */
1805 val_print_array_elements (struct type
*type
,
1806 const gdb_byte
*valaddr
, int embedded_offset
,
1807 CORE_ADDR address
, struct ui_file
*stream
,
1809 const struct value
*val
,
1810 const struct value_print_options
*options
,
1813 unsigned int things_printed
= 0;
1815 struct type
*elttype
, *index_type
, *base_index_type
;
1817 /* Position of the array element we are examining to see
1818 whether it is repeated. */
1820 /* Number of repetitions we have detected so far. */
1822 LONGEST low_bound
, high_bound
;
1823 LONGEST low_pos
, high_pos
;
1825 elttype
= TYPE_TARGET_TYPE (type
);
1826 eltlen
= TYPE_LENGTH (check_typedef (elttype
));
1827 index_type
= TYPE_INDEX_TYPE (type
);
1829 if (get_array_bounds (type
, &low_bound
, &high_bound
))
1831 if (TYPE_CODE (index_type
) == TYPE_CODE_RANGE
)
1832 base_index_type
= TYPE_TARGET_TYPE (index_type
);
1834 base_index_type
= index_type
;
1836 /* Non-contiguous enumerations types can by used as index types
1837 in some languages (e.g. Ada). In this case, the array length
1838 shall be computed from the positions of the first and last
1839 literal in the enumeration type, and not from the values
1840 of these literals. */
1841 if (!discrete_position (base_index_type
, low_bound
, &low_pos
)
1842 || !discrete_position (base_index_type
, high_bound
, &high_pos
))
1844 warning (_("unable to get positions in array, use bounds instead"));
1845 low_pos
= low_bound
;
1846 high_pos
= high_bound
;
1849 /* The array length should normally be HIGH_POS - LOW_POS + 1.
1850 But we have to be a little extra careful, because some languages
1851 such as Ada allow LOW_POS to be greater than HIGH_POS for
1852 empty arrays. In that situation, the array length is just zero,
1854 if (low_pos
> high_pos
)
1857 len
= high_pos
- low_pos
+ 1;
1861 warning (_("unable to get bounds of array, assuming null array"));
1866 annotate_array_section_begin (i
, elttype
);
1868 for (; i
< len
&& things_printed
< options
->print_max
; i
++)
1872 if (options
->prettyformat_arrays
)
1874 fprintf_filtered (stream
, ",\n");
1875 print_spaces_filtered (2 + 2 * recurse
, stream
);
1879 fprintf_filtered (stream
, ", ");
1882 wrap_here (n_spaces (2 + 2 * recurse
));
1883 maybe_print_array_index (index_type
, i
+ low_bound
,
1888 /* Only check for reps if repeat_count_threshold is not set to
1889 UINT_MAX (unlimited). */
1890 if (options
->repeat_count_threshold
< UINT_MAX
)
1893 && value_contents_eq (val
,
1894 embedded_offset
+ i
* eltlen
,
1905 if (reps
> options
->repeat_count_threshold
)
1907 val_print (elttype
, valaddr
, embedded_offset
+ i
* eltlen
,
1908 address
, stream
, recurse
+ 1, val
, options
,
1910 annotate_elt_rep (reps
);
1911 fprintf_filtered (stream
, " <repeats %u times>", reps
);
1912 annotate_elt_rep_end ();
1915 things_printed
+= options
->repeat_count_threshold
;
1919 val_print (elttype
, valaddr
, embedded_offset
+ i
* eltlen
,
1921 stream
, recurse
+ 1, val
, options
, current_language
);
1926 annotate_array_section_end ();
1929 fprintf_filtered (stream
, "...");
1933 /* Read LEN bytes of target memory at address MEMADDR, placing the
1934 results in GDB's memory at MYADDR. Returns a count of the bytes
1935 actually read, and optionally a target_xfer_status value in the
1936 location pointed to by ERRPTR if ERRPTR is non-null. */
1938 /* FIXME: cagney/1999-10-14: Only used by val_print_string. Can this
1939 function be eliminated. */
1942 partial_memory_read (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
1943 int len
, int *errptr
)
1945 int nread
; /* Number of bytes actually read. */
1946 int errcode
; /* Error from last read. */
1948 /* First try a complete read. */
1949 errcode
= target_read_memory (memaddr
, myaddr
, len
);
1957 /* Loop, reading one byte at a time until we get as much as we can. */
1958 for (errcode
= 0, nread
= 0; len
> 0 && errcode
== 0; nread
++, len
--)
1960 errcode
= target_read_memory (memaddr
++, myaddr
++, 1);
1962 /* If an error, the last read was unsuccessful, so adjust count. */
1975 /* Read a string from the inferior, at ADDR, with LEN characters of WIDTH bytes
1976 each. Fetch at most FETCHLIMIT characters. BUFFER will be set to a newly
1977 allocated buffer containing the string, which the caller is responsible to
1978 free, and BYTES_READ will be set to the number of bytes read. Returns 0 on
1979 success, or a target_xfer_status on failure.
1981 If LEN > 0, reads the lesser of LEN or FETCHLIMIT characters
1982 (including eventual NULs in the middle or end of the string).
1984 If LEN is -1, stops at the first null character (not necessarily
1985 the first null byte) up to a maximum of FETCHLIMIT characters. Set
1986 FETCHLIMIT to UINT_MAX to read as many characters as possible from
1989 Unless an exception is thrown, BUFFER will always be allocated, even on
1990 failure. In this case, some characters might have been read before the
1991 failure happened. Check BYTES_READ to recognize this situation.
1993 Note: There was a FIXME asking to make this code use target_read_string,
1994 but this function is more general (can read past null characters, up to
1995 given LEN). Besides, it is used much more often than target_read_string
1996 so it is more tested. Perhaps callers of target_read_string should use
1997 this function instead? */
2000 read_string (CORE_ADDR addr
, int len
, int width
, unsigned int fetchlimit
,
2001 enum bfd_endian byte_order
, gdb_byte
**buffer
, int *bytes_read
)
2003 int errcode
; /* Errno returned from bad reads. */
2004 unsigned int nfetch
; /* Chars to fetch / chars fetched. */
2005 gdb_byte
*bufptr
; /* Pointer to next available byte in
2007 struct cleanup
*old_chain
= NULL
; /* Top of the old cleanup chain. */
2009 /* Loop until we either have all the characters, or we encounter
2010 some error, such as bumping into the end of the address space. */
2014 old_chain
= make_cleanup (free_current_contents
, buffer
);
2018 /* We want fetchlimit chars, so we might as well read them all in
2020 unsigned int fetchlen
= min (len
, fetchlimit
);
2022 *buffer
= (gdb_byte
*) xmalloc (fetchlen
* width
);
2025 nfetch
= partial_memory_read (addr
, bufptr
, fetchlen
* width
, &errcode
)
2027 addr
+= nfetch
* width
;
2028 bufptr
+= nfetch
* width
;
2032 unsigned long bufsize
= 0;
2033 unsigned int chunksize
; /* Size of each fetch, in chars. */
2034 int found_nul
; /* Non-zero if we found the nul char. */
2035 gdb_byte
*limit
; /* First location past end of fetch buffer. */
2038 /* We are looking for a NUL terminator to end the fetching, so we
2039 might as well read in blocks that are large enough to be efficient,
2040 but not so large as to be slow if fetchlimit happens to be large.
2041 So we choose the minimum of 8 and fetchlimit. We used to use 200
2042 instead of 8 but 200 is way too big for remote debugging over a
2044 chunksize
= min (8, fetchlimit
);
2049 nfetch
= min (chunksize
, fetchlimit
- bufsize
);
2051 if (*buffer
== NULL
)
2052 *buffer
= (gdb_byte
*) xmalloc (nfetch
* width
);
2054 *buffer
= (gdb_byte
*) xrealloc (*buffer
,
2055 (nfetch
+ bufsize
) * width
);
2057 bufptr
= *buffer
+ bufsize
* width
;
2060 /* Read as much as we can. */
2061 nfetch
= partial_memory_read (addr
, bufptr
, nfetch
* width
, &errcode
)
2064 /* Scan this chunk for the null character that terminates the string
2065 to print. If found, we don't need to fetch any more. Note
2066 that bufptr is explicitly left pointing at the next character
2067 after the null character, or at the next character after the end
2070 limit
= bufptr
+ nfetch
* width
;
2071 while (bufptr
< limit
)
2075 c
= extract_unsigned_integer (bufptr
, width
, byte_order
);
2080 /* We don't care about any error which happened after
2081 the NUL terminator. */
2088 while (errcode
== 0 /* no error */
2089 && bufptr
- *buffer
< fetchlimit
* width
/* no overrun */
2090 && !found_nul
); /* haven't found NUL yet */
2093 { /* Length of string is really 0! */
2094 /* We always allocate *buffer. */
2095 *buffer
= bufptr
= xmalloc (1);
2099 /* bufptr and addr now point immediately beyond the last byte which we
2100 consider part of the string (including a '\0' which ends the string). */
2101 *bytes_read
= bufptr
- *buffer
;
2105 discard_cleanups (old_chain
);
2110 /* Return true if print_wchar can display W without resorting to a
2111 numeric escape, false otherwise. */
2114 wchar_printable (gdb_wchar_t w
)
2116 return (gdb_iswprint (w
)
2117 || w
== LCST ('\a') || w
== LCST ('\b')
2118 || w
== LCST ('\f') || w
== LCST ('\n')
2119 || w
== LCST ('\r') || w
== LCST ('\t')
2120 || w
== LCST ('\v'));
2123 /* A helper function that converts the contents of STRING to wide
2124 characters and then appends them to OUTPUT. */
2127 append_string_as_wide (const char *string
,
2128 struct obstack
*output
)
2130 for (; *string
; ++string
)
2132 gdb_wchar_t w
= gdb_btowc (*string
);
2133 obstack_grow (output
, &w
, sizeof (gdb_wchar_t
));
2137 /* Print a wide character W to OUTPUT. ORIG is a pointer to the
2138 original (target) bytes representing the character, ORIG_LEN is the
2139 number of valid bytes. WIDTH is the number of bytes in a base
2140 characters of the type. OUTPUT is an obstack to which wide
2141 characters are emitted. QUOTER is a (narrow) character indicating
2142 the style of quotes surrounding the character to be printed.
2143 NEED_ESCAPE is an in/out flag which is used to track numeric
2144 escapes across calls. */
2147 print_wchar (gdb_wint_t w
, const gdb_byte
*orig
,
2148 int orig_len
, int width
,
2149 enum bfd_endian byte_order
,
2150 struct obstack
*output
,
2151 int quoter
, int *need_escapep
)
2153 int need_escape
= *need_escapep
;
2157 /* iswprint implementation on Windows returns 1 for tab character.
2158 In order to avoid different printout on this host, we explicitly
2159 use wchar_printable function. */
2163 obstack_grow_wstr (output
, LCST ("\\a"));
2166 obstack_grow_wstr (output
, LCST ("\\b"));
2169 obstack_grow_wstr (output
, LCST ("\\f"));
2172 obstack_grow_wstr (output
, LCST ("\\n"));
2175 obstack_grow_wstr (output
, LCST ("\\r"));
2178 obstack_grow_wstr (output
, LCST ("\\t"));
2181 obstack_grow_wstr (output
, LCST ("\\v"));
2185 if (wchar_printable (w
) && (!need_escape
|| (!gdb_iswdigit (w
)
2187 && w
!= LCST ('9'))))
2189 gdb_wchar_t wchar
= w
;
2191 if (w
== gdb_btowc (quoter
) || w
== LCST ('\\'))
2192 obstack_grow_wstr (output
, LCST ("\\"));
2193 obstack_grow (output
, &wchar
, sizeof (gdb_wchar_t
));
2199 for (i
= 0; i
+ width
<= orig_len
; i
+= width
)
2204 value
= extract_unsigned_integer (&orig
[i
], width
,
2206 /* If the value fits in 3 octal digits, print it that
2207 way. Otherwise, print it as a hex escape. */
2209 xsnprintf (octal
, sizeof (octal
), "\\%.3o",
2210 (int) (value
& 0777));
2212 xsnprintf (octal
, sizeof (octal
), "\\x%lx", (long) value
);
2213 append_string_as_wide (octal
, output
);
2215 /* If we somehow have extra bytes, print them now. */
2216 while (i
< orig_len
)
2220 xsnprintf (octal
, sizeof (octal
), "\\%.3o", orig
[i
] & 0xff);
2221 append_string_as_wide (octal
, output
);
2232 /* Print the character C on STREAM as part of the contents of a
2233 literal string whose delimiter is QUOTER. ENCODING names the
2237 generic_emit_char (int c
, struct type
*type
, struct ui_file
*stream
,
2238 int quoter
, const char *encoding
)
2240 enum bfd_endian byte_order
2241 = gdbarch_byte_order (get_type_arch (type
));
2242 struct obstack wchar_buf
, output
;
2243 struct cleanup
*cleanups
;
2245 struct wchar_iterator
*iter
;
2246 int need_escape
= 0;
2248 buf
= alloca (TYPE_LENGTH (type
));
2249 pack_long (buf
, type
, c
);
2251 iter
= make_wchar_iterator (buf
, TYPE_LENGTH (type
),
2252 encoding
, TYPE_LENGTH (type
));
2253 cleanups
= make_cleanup_wchar_iterator (iter
);
2255 /* This holds the printable form of the wchar_t data. */
2256 obstack_init (&wchar_buf
);
2257 make_cleanup_obstack_free (&wchar_buf
);
2263 const gdb_byte
*buf
;
2265 int print_escape
= 1;
2266 enum wchar_iterate_result result
;
2268 num_chars
= wchar_iterate (iter
, &result
, &chars
, &buf
, &buflen
);
2273 /* If all characters are printable, print them. Otherwise,
2274 we're going to have to print an escape sequence. We
2275 check all characters because we want to print the target
2276 bytes in the escape sequence, and we don't know character
2277 boundaries there. */
2281 for (i
= 0; i
< num_chars
; ++i
)
2282 if (!wchar_printable (chars
[i
]))
2290 for (i
= 0; i
< num_chars
; ++i
)
2291 print_wchar (chars
[i
], buf
, buflen
,
2292 TYPE_LENGTH (type
), byte_order
,
2293 &wchar_buf
, quoter
, &need_escape
);
2297 /* This handles the NUM_CHARS == 0 case as well. */
2299 print_wchar (gdb_WEOF
, buf
, buflen
, TYPE_LENGTH (type
),
2300 byte_order
, &wchar_buf
, quoter
, &need_escape
);
2303 /* The output in the host encoding. */
2304 obstack_init (&output
);
2305 make_cleanup_obstack_free (&output
);
2307 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2308 (gdb_byte
*) obstack_base (&wchar_buf
),
2309 obstack_object_size (&wchar_buf
),
2310 sizeof (gdb_wchar_t
), &output
, translit_char
);
2311 obstack_1grow (&output
, '\0');
2313 fputs_filtered (obstack_base (&output
), stream
);
2315 do_cleanups (cleanups
);
2318 /* Return the repeat count of the next character/byte in ITER,
2319 storing the result in VEC. */
2322 count_next_character (struct wchar_iterator
*iter
,
2323 VEC (converted_character_d
) **vec
)
2325 struct converted_character
*current
;
2327 if (VEC_empty (converted_character_d
, *vec
))
2329 struct converted_character tmp
;
2333 = wchar_iterate (iter
, &tmp
.result
, &chars
, &tmp
.buf
, &tmp
.buflen
);
2334 if (tmp
.num_chars
> 0)
2336 gdb_assert (tmp
.num_chars
< MAX_WCHARS
);
2337 memcpy (tmp
.chars
, chars
, tmp
.num_chars
* sizeof (gdb_wchar_t
));
2339 VEC_safe_push (converted_character_d
, *vec
, &tmp
);
2342 current
= VEC_last (converted_character_d
, *vec
);
2344 /* Count repeated characters or bytes. */
2345 current
->repeat_count
= 1;
2346 if (current
->num_chars
== -1)
2354 struct converted_character d
;
2361 /* Get the next character. */
2363 = wchar_iterate (iter
, &d
.result
, &chars
, &d
.buf
, &d
.buflen
);
2365 /* If a character was successfully converted, save the character
2366 into the converted character. */
2367 if (d
.num_chars
> 0)
2369 gdb_assert (d
.num_chars
< MAX_WCHARS
);
2370 memcpy (d
.chars
, chars
, WCHAR_BUFLEN (d
.num_chars
));
2373 /* Determine if the current character is the same as this
2375 if (d
.num_chars
== current
->num_chars
&& d
.result
== current
->result
)
2377 /* There are two cases to consider:
2379 1) Equality of converted character (num_chars > 0)
2380 2) Equality of non-converted character (num_chars == 0) */
2381 if ((current
->num_chars
> 0
2382 && memcmp (current
->chars
, d
.chars
,
2383 WCHAR_BUFLEN (current
->num_chars
)) == 0)
2384 || (current
->num_chars
== 0
2385 && current
->buflen
== d
.buflen
2386 && memcmp (current
->buf
, d
.buf
, current
->buflen
) == 0))
2387 ++current
->repeat_count
;
2395 /* Push this next converted character onto the result vector. */
2396 repeat
= current
->repeat_count
;
2397 VEC_safe_push (converted_character_d
, *vec
, &d
);
2402 /* Print the characters in CHARS to the OBSTACK. QUOTE_CHAR is the quote
2403 character to use with string output. WIDTH is the size of the output
2404 character type. BYTE_ORDER is the the target byte order. OPTIONS
2405 is the user's print options. */
2408 print_converted_chars_to_obstack (struct obstack
*obstack
,
2409 VEC (converted_character_d
) *chars
,
2410 int quote_char
, int width
,
2411 enum bfd_endian byte_order
,
2412 const struct value_print_options
*options
)
2415 struct converted_character
*elem
;
2416 enum {START
, SINGLE
, REPEAT
, INCOMPLETE
, FINISH
} state
, last
;
2417 gdb_wchar_t wide_quote_char
= gdb_btowc (quote_char
);
2418 int need_escape
= 0;
2420 /* Set the start state. */
2422 last
= state
= START
;
2430 /* Nothing to do. */
2437 /* We are outputting a single character
2438 (< options->repeat_count_threshold). */
2442 /* We were outputting some other type of content, so we
2443 must output and a comma and a quote. */
2445 obstack_grow_wstr (obstack
, LCST (", "));
2446 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2448 /* Output the character. */
2449 for (j
= 0; j
< elem
->repeat_count
; ++j
)
2451 if (elem
->result
== wchar_iterate_ok
)
2452 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2453 byte_order
, obstack
, quote_char
, &need_escape
);
2455 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2456 byte_order
, obstack
, quote_char
, &need_escape
);
2466 /* We are outputting a character with a repeat count
2467 greater than options->repeat_count_threshold. */
2471 /* We were outputting a single string. Terminate the
2473 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2476 obstack_grow_wstr (obstack
, LCST (", "));
2478 /* Output the character and repeat string. */
2479 obstack_grow_wstr (obstack
, LCST ("'"));
2480 if (elem
->result
== wchar_iterate_ok
)
2481 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2482 byte_order
, obstack
, quote_char
, &need_escape
);
2484 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2485 byte_order
, obstack
, quote_char
, &need_escape
);
2486 obstack_grow_wstr (obstack
, LCST ("'"));
2487 s
= xstrprintf (_(" <repeats %u times>"), elem
->repeat_count
);
2488 for (j
= 0; s
[j
]; ++j
)
2490 gdb_wchar_t w
= gdb_btowc (s
[j
]);
2491 obstack_grow (obstack
, &w
, sizeof (gdb_wchar_t
));
2498 /* We are outputting an incomplete sequence. */
2501 /* If we were outputting a string of SINGLE characters,
2502 terminate the quote. */
2503 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2506 obstack_grow_wstr (obstack
, LCST (", "));
2508 /* Output the incomplete sequence string. */
2509 obstack_grow_wstr (obstack
, LCST ("<incomplete sequence "));
2510 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
, byte_order
,
2511 obstack
, 0, &need_escape
);
2512 obstack_grow_wstr (obstack
, LCST (">"));
2514 /* We do not attempt to outupt anything after this. */
2519 /* All done. If we were outputting a string of SINGLE
2520 characters, the string must be terminated. Otherwise,
2521 REPEAT and INCOMPLETE are always left properly terminated. */
2523 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2528 /* Get the next element and state. */
2530 if (state
!= FINISH
)
2532 elem
= VEC_index (converted_character_d
, chars
, idx
++);
2533 switch (elem
->result
)
2535 case wchar_iterate_ok
:
2536 case wchar_iterate_invalid
:
2537 if (elem
->repeat_count
> options
->repeat_count_threshold
)
2543 case wchar_iterate_incomplete
:
2547 case wchar_iterate_eof
:
2555 /* Print the character string STRING, printing at most LENGTH
2556 characters. LENGTH is -1 if the string is nul terminated. TYPE is
2557 the type of each character. OPTIONS holds the printing options;
2558 printing stops early if the number hits print_max; repeat counts
2559 are printed as appropriate. Print ellipses at the end if we had to
2560 stop before printing LENGTH characters, or if FORCE_ELLIPSES.
2561 QUOTE_CHAR is the character to print at each end of the string. If
2562 C_STYLE_TERMINATOR is true, and the last character is 0, then it is
2566 generic_printstr (struct ui_file
*stream
, struct type
*type
,
2567 const gdb_byte
*string
, unsigned int length
,
2568 const char *encoding
, int force_ellipses
,
2569 int quote_char
, int c_style_terminator
,
2570 const struct value_print_options
*options
)
2572 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (type
));
2574 int width
= TYPE_LENGTH (type
);
2575 struct obstack wchar_buf
, output
;
2576 struct cleanup
*cleanup
;
2577 struct wchar_iterator
*iter
;
2579 struct converted_character
*last
;
2580 VEC (converted_character_d
) *converted_chars
;
2584 unsigned long current_char
= 1;
2586 for (i
= 0; current_char
; ++i
)
2589 current_char
= extract_unsigned_integer (string
+ i
* width
,
2595 /* If the string was not truncated due to `set print elements', and
2596 the last byte of it is a null, we don't print that, in
2597 traditional C style. */
2598 if (c_style_terminator
2601 && (extract_unsigned_integer (string
+ (length
- 1) * width
,
2602 width
, byte_order
) == 0))
2607 fputs_filtered ("\"\"", stream
);
2611 /* Arrange to iterate over the characters, in wchar_t form. */
2612 iter
= make_wchar_iterator (string
, length
* width
, encoding
, width
);
2613 cleanup
= make_cleanup_wchar_iterator (iter
);
2614 converted_chars
= NULL
;
2615 make_cleanup (VEC_cleanup (converted_character_d
), &converted_chars
);
2617 /* Convert characters until the string is over or the maximum
2618 number of printed characters has been reached. */
2620 while (i
< options
->print_max
)
2626 /* Grab the next character and repeat count. */
2627 r
= count_next_character (iter
, &converted_chars
);
2629 /* If less than zero, the end of the input string was reached. */
2633 /* Otherwise, add the count to the total print count and get
2634 the next character. */
2638 /* Get the last element and determine if the entire string was
2640 last
= VEC_last (converted_character_d
, converted_chars
);
2641 finished
= (last
->result
== wchar_iterate_eof
);
2643 /* Ensure that CONVERTED_CHARS is terminated. */
2644 last
->result
= wchar_iterate_eof
;
2646 /* WCHAR_BUF is the obstack we use to represent the string in
2648 obstack_init (&wchar_buf
);
2649 make_cleanup_obstack_free (&wchar_buf
);
2651 /* Print the output string to the obstack. */
2652 print_converted_chars_to_obstack (&wchar_buf
, converted_chars
, quote_char
,
2653 width
, byte_order
, options
);
2655 if (force_ellipses
|| !finished
)
2656 obstack_grow_wstr (&wchar_buf
, LCST ("..."));
2658 /* OUTPUT is where we collect `char's for printing. */
2659 obstack_init (&output
);
2660 make_cleanup_obstack_free (&output
);
2662 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2663 (gdb_byte
*) obstack_base (&wchar_buf
),
2664 obstack_object_size (&wchar_buf
),
2665 sizeof (gdb_wchar_t
), &output
, translit_char
);
2666 obstack_1grow (&output
, '\0');
2668 fputs_filtered (obstack_base (&output
), stream
);
2670 do_cleanups (cleanup
);
2673 /* Print a string from the inferior, starting at ADDR and printing up to LEN
2674 characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing
2675 stops at the first null byte, otherwise printing proceeds (including null
2676 bytes) until either print_max or LEN characters have been printed,
2677 whichever is smaller. ENCODING is the name of the string's
2678 encoding. It can be NULL, in which case the target encoding is
2682 val_print_string (struct type
*elttype
, const char *encoding
,
2683 CORE_ADDR addr
, int len
,
2684 struct ui_file
*stream
,
2685 const struct value_print_options
*options
)
2687 int force_ellipsis
= 0; /* Force ellipsis to be printed if nonzero. */
2688 int errcode
; /* Errno returned from bad reads. */
2689 int found_nul
; /* Non-zero if we found the nul char. */
2690 unsigned int fetchlimit
; /* Maximum number of chars to print. */
2692 gdb_byte
*buffer
= NULL
; /* Dynamically growable fetch buffer. */
2693 struct cleanup
*old_chain
= NULL
; /* Top of the old cleanup chain. */
2694 struct gdbarch
*gdbarch
= get_type_arch (elttype
);
2695 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
2696 int width
= TYPE_LENGTH (elttype
);
2698 /* First we need to figure out the limit on the number of characters we are
2699 going to attempt to fetch and print. This is actually pretty simple. If
2700 LEN >= zero, then the limit is the minimum of LEN and print_max. If
2701 LEN is -1, then the limit is print_max. This is true regardless of
2702 whether print_max is zero, UINT_MAX (unlimited), or something in between,
2703 because finding the null byte (or available memory) is what actually
2704 limits the fetch. */
2706 fetchlimit
= (len
== -1 ? options
->print_max
: min (len
,
2707 options
->print_max
));
2709 errcode
= read_string (addr
, len
, width
, fetchlimit
, byte_order
,
2710 &buffer
, &bytes_read
);
2711 old_chain
= make_cleanup (xfree
, buffer
);
2715 /* We now have either successfully filled the buffer to fetchlimit,
2716 or terminated early due to an error or finding a null char when
2719 /* Determine found_nul by looking at the last character read. */
2721 if (bytes_read
>= width
)
2722 found_nul
= extract_unsigned_integer (buffer
+ bytes_read
- width
, width
,
2724 if (len
== -1 && !found_nul
)
2728 /* We didn't find a NUL terminator we were looking for. Attempt
2729 to peek at the next character. If not successful, or it is not
2730 a null byte, then force ellipsis to be printed. */
2732 peekbuf
= (gdb_byte
*) alloca (width
);
2734 if (target_read_memory (addr
, peekbuf
, width
) == 0
2735 && extract_unsigned_integer (peekbuf
, width
, byte_order
) != 0)
2738 else if ((len
>= 0 && errcode
!= 0) || (len
> bytes_read
/ width
))
2740 /* Getting an error when we have a requested length, or fetching less
2741 than the number of characters actually requested, always make us
2746 /* If we get an error before fetching anything, don't print a string.
2747 But if we fetch something and then get an error, print the string
2748 and then the error message. */
2749 if (errcode
== 0 || bytes_read
> 0)
2751 LA_PRINT_STRING (stream
, elttype
, buffer
, bytes_read
/ width
,
2752 encoding
, force_ellipsis
, options
);
2759 str
= memory_error_message (errcode
, gdbarch
, addr
);
2760 make_cleanup (xfree
, str
);
2762 fprintf_filtered (stream
, "<error: ");
2763 fputs_filtered (str
, stream
);
2764 fprintf_filtered (stream
, ">");
2768 do_cleanups (old_chain
);
2770 return (bytes_read
/ width
);
2774 /* The 'set input-radix' command writes to this auxiliary variable.
2775 If the requested radix is valid, INPUT_RADIX is updated; otherwise,
2776 it is left unchanged. */
2778 static unsigned input_radix_1
= 10;
2780 /* Validate an input or output radix setting, and make sure the user
2781 knows what they really did here. Radix setting is confusing, e.g.
2782 setting the input radix to "10" never changes it! */
2785 set_input_radix (char *args
, int from_tty
, struct cmd_list_element
*c
)
2787 set_input_radix_1 (from_tty
, input_radix_1
);
2791 set_input_radix_1 (int from_tty
, unsigned radix
)
2793 /* We don't currently disallow any input radix except 0 or 1, which don't
2794 make any mathematical sense. In theory, we can deal with any input
2795 radix greater than 1, even if we don't have unique digits for every
2796 value from 0 to radix-1, but in practice we lose on large radix values.
2797 We should either fix the lossage or restrict the radix range more.
2802 input_radix_1
= input_radix
;
2803 error (_("Nonsense input radix ``decimal %u''; input radix unchanged."),
2806 input_radix_1
= input_radix
= radix
;
2809 printf_filtered (_("Input radix now set to "
2810 "decimal %u, hex %x, octal %o.\n"),
2811 radix
, radix
, radix
);
2815 /* The 'set output-radix' command writes to this auxiliary variable.
2816 If the requested radix is valid, OUTPUT_RADIX is updated,
2817 otherwise, it is left unchanged. */
2819 static unsigned output_radix_1
= 10;
2822 set_output_radix (char *args
, int from_tty
, struct cmd_list_element
*c
)
2824 set_output_radix_1 (from_tty
, output_radix_1
);
2828 set_output_radix_1 (int from_tty
, unsigned radix
)
2830 /* Validate the radix and disallow ones that we aren't prepared to
2831 handle correctly, leaving the radix unchanged. */
2835 user_print_options
.output_format
= 'x'; /* hex */
2838 user_print_options
.output_format
= 0; /* decimal */
2841 user_print_options
.output_format
= 'o'; /* octal */
2844 output_radix_1
= output_radix
;
2845 error (_("Unsupported output radix ``decimal %u''; "
2846 "output radix unchanged."),
2849 output_radix_1
= output_radix
= radix
;
2852 printf_filtered (_("Output radix now set to "
2853 "decimal %u, hex %x, octal %o.\n"),
2854 radix
, radix
, radix
);
2858 /* Set both the input and output radix at once. Try to set the output radix
2859 first, since it has the most restrictive range. An radix that is valid as
2860 an output radix is also valid as an input radix.
2862 It may be useful to have an unusual input radix. If the user wishes to
2863 set an input radix that is not valid as an output radix, he needs to use
2864 the 'set input-radix' command. */
2867 set_radix (char *arg
, int from_tty
)
2871 radix
= (arg
== NULL
) ? 10 : parse_and_eval_long (arg
);
2872 set_output_radix_1 (0, radix
);
2873 set_input_radix_1 (0, radix
);
2876 printf_filtered (_("Input and output radices now set to "
2877 "decimal %u, hex %x, octal %o.\n"),
2878 radix
, radix
, radix
);
2882 /* Show both the input and output radices. */
2885 show_radix (char *arg
, int from_tty
)
2889 if (input_radix
== output_radix
)
2891 printf_filtered (_("Input and output radices set to "
2892 "decimal %u, hex %x, octal %o.\n"),
2893 input_radix
, input_radix
, input_radix
);
2897 printf_filtered (_("Input radix set to decimal "
2898 "%u, hex %x, octal %o.\n"),
2899 input_radix
, input_radix
, input_radix
);
2900 printf_filtered (_("Output radix set to decimal "
2901 "%u, hex %x, octal %o.\n"),
2902 output_radix
, output_radix
, output_radix
);
2909 set_print (char *arg
, int from_tty
)
2912 "\"set print\" must be followed by the name of a print subcommand.\n");
2913 help_list (setprintlist
, "set print ", all_commands
, gdb_stdout
);
2917 show_print (char *args
, int from_tty
)
2919 cmd_show_list (showprintlist
, from_tty
, "");
2923 set_print_raw (char *arg
, int from_tty
)
2926 "\"set print raw\" must be followed by the name of a \"print raw\" subcommand.\n");
2927 help_list (setprintrawlist
, "set print raw ", all_commands
, gdb_stdout
);
2931 show_print_raw (char *args
, int from_tty
)
2933 cmd_show_list (showprintrawlist
, from_tty
, "");
2938 _initialize_valprint (void)
2940 add_prefix_cmd ("print", no_class
, set_print
,
2941 _("Generic command for setting how things print."),
2942 &setprintlist
, "set print ", 0, &setlist
);
2943 add_alias_cmd ("p", "print", no_class
, 1, &setlist
);
2944 /* Prefer set print to set prompt. */
2945 add_alias_cmd ("pr", "print", no_class
, 1, &setlist
);
2947 add_prefix_cmd ("print", no_class
, show_print
,
2948 _("Generic command for showing print settings."),
2949 &showprintlist
, "show print ", 0, &showlist
);
2950 add_alias_cmd ("p", "print", no_class
, 1, &showlist
);
2951 add_alias_cmd ("pr", "print", no_class
, 1, &showlist
);
2953 add_prefix_cmd ("raw", no_class
, set_print_raw
,
2955 Generic command for setting what things to print in \"raw\" mode."),
2956 &setprintrawlist
, "set print raw ", 0, &setprintlist
);
2957 add_prefix_cmd ("raw", no_class
, show_print_raw
,
2958 _("Generic command for showing \"print raw\" settings."),
2959 &showprintrawlist
, "show print raw ", 0, &showprintlist
);
2961 add_setshow_uinteger_cmd ("elements", no_class
,
2962 &user_print_options
.print_max
, _("\
2963 Set limit on string chars or array elements to print."), _("\
2964 Show limit on string chars or array elements to print."), _("\
2965 \"set print elements unlimited\" causes there to be no limit."),
2968 &setprintlist
, &showprintlist
);
2970 add_setshow_boolean_cmd ("null-stop", no_class
,
2971 &user_print_options
.stop_print_at_null
, _("\
2972 Set printing of char arrays to stop at first null char."), _("\
2973 Show printing of char arrays to stop at first null char."), NULL
,
2975 show_stop_print_at_null
,
2976 &setprintlist
, &showprintlist
);
2978 add_setshow_uinteger_cmd ("repeats", no_class
,
2979 &user_print_options
.repeat_count_threshold
, _("\
2980 Set threshold for repeated print elements."), _("\
2981 Show threshold for repeated print elements."), _("\
2982 \"set print repeats unlimited\" causes all elements to be individually printed."),
2984 show_repeat_count_threshold
,
2985 &setprintlist
, &showprintlist
);
2987 add_setshow_boolean_cmd ("pretty", class_support
,
2988 &user_print_options
.prettyformat_structs
, _("\
2989 Set pretty formatting of structures."), _("\
2990 Show pretty formatting of structures."), NULL
,
2992 show_prettyformat_structs
,
2993 &setprintlist
, &showprintlist
);
2995 add_setshow_boolean_cmd ("union", class_support
,
2996 &user_print_options
.unionprint
, _("\
2997 Set printing of unions interior to structures."), _("\
2998 Show printing of unions interior to structures."), NULL
,
3001 &setprintlist
, &showprintlist
);
3003 add_setshow_boolean_cmd ("array", class_support
,
3004 &user_print_options
.prettyformat_arrays
, _("\
3005 Set pretty formatting of arrays."), _("\
3006 Show pretty formatting of arrays."), NULL
,
3008 show_prettyformat_arrays
,
3009 &setprintlist
, &showprintlist
);
3011 add_setshow_boolean_cmd ("address", class_support
,
3012 &user_print_options
.addressprint
, _("\
3013 Set printing of addresses."), _("\
3014 Show printing of addresses."), NULL
,
3017 &setprintlist
, &showprintlist
);
3019 add_setshow_boolean_cmd ("symbol", class_support
,
3020 &user_print_options
.symbol_print
, _("\
3021 Set printing of symbol names when printing pointers."), _("\
3022 Show printing of symbol names when printing pointers."),
3025 &setprintlist
, &showprintlist
);
3027 add_setshow_zuinteger_cmd ("input-radix", class_support
, &input_radix_1
,
3029 Set default input radix for entering numbers."), _("\
3030 Show default input radix for entering numbers."), NULL
,
3033 &setlist
, &showlist
);
3035 add_setshow_zuinteger_cmd ("output-radix", class_support
, &output_radix_1
,
3037 Set default output radix for printing of values."), _("\
3038 Show default output radix for printing of values."), NULL
,
3041 &setlist
, &showlist
);
3043 /* The "set radix" and "show radix" commands are special in that
3044 they are like normal set and show commands but allow two normally
3045 independent variables to be either set or shown with a single
3046 command. So the usual deprecated_add_set_cmd() and [deleted]
3047 add_show_from_set() commands aren't really appropriate. */
3048 /* FIXME: i18n: With the new add_setshow_integer command, that is no
3049 longer true - show can display anything. */
3050 add_cmd ("radix", class_support
, set_radix
, _("\
3051 Set default input and output number radices.\n\
3052 Use 'set input-radix' or 'set output-radix' to independently set each.\n\
3053 Without an argument, sets both radices back to the default value of 10."),
3055 add_cmd ("radix", class_support
, show_radix
, _("\
3056 Show the default input and output number radices.\n\
3057 Use 'show input-radix' or 'show output-radix' to independently show each."),
3060 add_setshow_boolean_cmd ("array-indexes", class_support
,
3061 &user_print_options
.print_array_indexes
, _("\
3062 Set printing of array indexes."), _("\
3063 Show printing of array indexes"), NULL
, NULL
, show_print_array_indexes
,
3064 &setprintlist
, &showprintlist
);