1 /* Print values for GDB, the GNU debugger.
3 Copyright (C) 1986-2016 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"
37 #include "typeprint.h"
40 /* Maximum number of wchars returned from wchar_iterate. */
43 /* A convenience macro to compute the size of a wchar_t buffer containing X
45 #define WCHAR_BUFLEN(X) ((X) * sizeof (gdb_wchar_t))
47 /* Character buffer size saved while iterating over wchars. */
48 #define WCHAR_BUFLEN_MAX WCHAR_BUFLEN (MAX_WCHARS)
50 /* A structure to encapsulate state information from iterated
51 character conversions. */
52 struct converted_character
54 /* The number of characters converted. */
57 /* The result of the conversion. See charset.h for more. */
58 enum wchar_iterate_result result
;
60 /* The (saved) converted character(s). */
61 gdb_wchar_t chars
[WCHAR_BUFLEN_MAX
];
63 /* The first converted target byte. */
66 /* The number of bytes converted. */
69 /* How many times this character(s) is repeated. */
73 typedef struct converted_character converted_character_d
;
74 DEF_VEC_O (converted_character_d
);
76 /* Command lists for set/show print raw. */
77 struct cmd_list_element
*setprintrawlist
;
78 struct cmd_list_element
*showprintrawlist
;
80 /* Prototypes for local functions */
82 static int partial_memory_read (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
83 int len
, int *errptr
);
85 static void show_print (char *, int);
87 static void set_print (char *, int);
89 static void set_radix (char *, int);
91 static void show_radix (char *, int);
93 static void set_input_radix (char *, int, struct cmd_list_element
*);
95 static void set_input_radix_1 (int, unsigned);
97 static void set_output_radix (char *, int, struct cmd_list_element
*);
99 static void set_output_radix_1 (int, unsigned);
101 static void val_print_type_code_flags (struct type
*type
,
102 const gdb_byte
*valaddr
,
103 struct ui_file
*stream
);
105 void _initialize_valprint (void);
107 #define PRINT_MAX_DEFAULT 200 /* Start print_max off at this value. */
109 struct value_print_options user_print_options
=
111 Val_prettyformat_default
, /* prettyformat */
112 0, /* prettyformat_arrays */
113 0, /* prettyformat_structs */
116 1, /* addressprint */
118 PRINT_MAX_DEFAULT
, /* print_max */
119 10, /* repeat_count_threshold */
120 0, /* output_format */
122 0, /* stop_print_at_null */
123 0, /* print_array_indexes */
125 1, /* static_field_print */
126 1, /* pascal_static_field_print */
132 /* Initialize *OPTS to be a copy of the user print options. */
134 get_user_print_options (struct value_print_options
*opts
)
136 *opts
= user_print_options
;
139 /* Initialize *OPTS to be a copy of the user print options, but with
140 pretty-formatting disabled. */
142 get_no_prettyformat_print_options (struct value_print_options
*opts
)
144 *opts
= user_print_options
;
145 opts
->prettyformat
= Val_no_prettyformat
;
148 /* Initialize *OPTS to be a copy of the user print options, but using
149 FORMAT as the formatting option. */
151 get_formatted_print_options (struct value_print_options
*opts
,
154 *opts
= user_print_options
;
155 opts
->format
= format
;
159 show_print_max (struct ui_file
*file
, int from_tty
,
160 struct cmd_list_element
*c
, const char *value
)
162 fprintf_filtered (file
,
163 _("Limit on string chars or array "
164 "elements to print is %s.\n"),
169 /* Default input and output radixes, and output format letter. */
171 unsigned input_radix
= 10;
173 show_input_radix (struct ui_file
*file
, int from_tty
,
174 struct cmd_list_element
*c
, const char *value
)
176 fprintf_filtered (file
,
177 _("Default input radix for entering numbers is %s.\n"),
181 unsigned output_radix
= 10;
183 show_output_radix (struct ui_file
*file
, int from_tty
,
184 struct cmd_list_element
*c
, const char *value
)
186 fprintf_filtered (file
,
187 _("Default output radix for printing of values is %s.\n"),
191 /* By default we print arrays without printing the index of each element in
192 the array. This behavior can be changed by setting PRINT_ARRAY_INDEXES. */
195 show_print_array_indexes (struct ui_file
*file
, int from_tty
,
196 struct cmd_list_element
*c
, const char *value
)
198 fprintf_filtered (file
, _("Printing of array indexes is %s.\n"), value
);
201 /* Print repeat counts if there are more than this many repetitions of an
202 element in an array. Referenced by the low level language dependent
206 show_repeat_count_threshold (struct ui_file
*file
, int from_tty
,
207 struct cmd_list_element
*c
, const char *value
)
209 fprintf_filtered (file
, _("Threshold for repeated print elements is %s.\n"),
213 /* If nonzero, stops printing of char arrays at first null. */
216 show_stop_print_at_null (struct ui_file
*file
, int from_tty
,
217 struct cmd_list_element
*c
, const char *value
)
219 fprintf_filtered (file
,
220 _("Printing of char arrays to stop "
221 "at first null char is %s.\n"),
225 /* Controls pretty printing of structures. */
228 show_prettyformat_structs (struct ui_file
*file
, int from_tty
,
229 struct cmd_list_element
*c
, const char *value
)
231 fprintf_filtered (file
, _("Pretty formatting of structures is %s.\n"), value
);
234 /* Controls pretty printing of arrays. */
237 show_prettyformat_arrays (struct ui_file
*file
, int from_tty
,
238 struct cmd_list_element
*c
, const char *value
)
240 fprintf_filtered (file
, _("Pretty formatting of arrays is %s.\n"), value
);
243 /* If nonzero, causes unions inside structures or other unions to be
247 show_unionprint (struct ui_file
*file
, int from_tty
,
248 struct cmd_list_element
*c
, const char *value
)
250 fprintf_filtered (file
,
251 _("Printing of unions interior to structures is %s.\n"),
255 /* If nonzero, causes machine addresses to be printed in certain contexts. */
258 show_addressprint (struct ui_file
*file
, int from_tty
,
259 struct cmd_list_element
*c
, const char *value
)
261 fprintf_filtered (file
, _("Printing of addresses is %s.\n"), value
);
265 show_symbol_print (struct ui_file
*file
, int from_tty
,
266 struct cmd_list_element
*c
, const char *value
)
268 fprintf_filtered (file
,
269 _("Printing of symbols when printing pointers is %s.\n"),
275 /* A helper function for val_print. When printing in "summary" mode,
276 we want to print scalar arguments, but not aggregate arguments.
277 This function distinguishes between the two. */
280 val_print_scalar_type_p (struct type
*type
)
282 type
= check_typedef (type
);
283 while (TYPE_CODE (type
) == TYPE_CODE_REF
)
285 type
= TYPE_TARGET_TYPE (type
);
286 type
= check_typedef (type
);
288 switch (TYPE_CODE (type
))
290 case TYPE_CODE_ARRAY
:
291 case TYPE_CODE_STRUCT
:
292 case TYPE_CODE_UNION
:
294 case TYPE_CODE_STRING
:
301 /* See its definition in value.h. */
304 valprint_check_validity (struct ui_file
*stream
,
307 const struct value
*val
)
309 type
= check_typedef (type
);
311 if (type_not_associated (type
))
313 val_print_not_associated (stream
);
317 if (type_not_allocated (type
))
319 val_print_not_allocated (stream
);
323 if (TYPE_CODE (type
) != TYPE_CODE_UNION
324 && TYPE_CODE (type
) != TYPE_CODE_STRUCT
325 && TYPE_CODE (type
) != TYPE_CODE_ARRAY
)
327 if (value_bits_any_optimized_out (val
,
328 TARGET_CHAR_BIT
* embedded_offset
,
329 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
331 val_print_optimized_out (val
, stream
);
335 if (value_bits_synthetic_pointer (val
, TARGET_CHAR_BIT
* embedded_offset
,
336 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
338 fputs_filtered (_("<synthetic pointer>"), stream
);
342 if (!value_bytes_available (val
, embedded_offset
, TYPE_LENGTH (type
)))
344 val_print_unavailable (stream
);
353 val_print_optimized_out (const struct value
*val
, struct ui_file
*stream
)
355 if (val
!= NULL
&& value_lval_const (val
) == lval_register
)
356 val_print_not_saved (stream
);
358 fprintf_filtered (stream
, _("<optimized out>"));
362 val_print_not_saved (struct ui_file
*stream
)
364 fprintf_filtered (stream
, _("<not saved>"));
368 val_print_unavailable (struct ui_file
*stream
)
370 fprintf_filtered (stream
, _("<unavailable>"));
374 val_print_invalid_address (struct ui_file
*stream
)
376 fprintf_filtered (stream
, _("<invalid address>"));
379 /* Print a pointer based on the type of its target.
381 Arguments to this functions are roughly the same as those in
382 generic_val_print. A difference is that ADDRESS is the address to print,
383 with embedded_offset already added. ELTTYPE represents
384 the pointed type after check_typedef. */
387 print_unpacked_pointer (struct type
*type
, struct type
*elttype
,
388 CORE_ADDR address
, struct ui_file
*stream
,
389 const struct value_print_options
*options
)
391 struct gdbarch
*gdbarch
= get_type_arch (type
);
393 if (TYPE_CODE (elttype
) == TYPE_CODE_FUNC
)
395 /* Try to print what function it points to. */
396 print_function_pointer_address (options
, gdbarch
, address
, stream
);
400 if (options
->symbol_print
)
401 print_address_demangle (options
, gdbarch
, address
, stream
, demangle
);
402 else if (options
->addressprint
)
403 fputs_filtered (paddress (gdbarch
, address
), stream
);
406 /* generic_val_print helper for TYPE_CODE_ARRAY. */
409 generic_val_print_array (struct type
*type
, const gdb_byte
*valaddr
,
410 int embedded_offset
, CORE_ADDR address
,
411 struct ui_file
*stream
, int recurse
,
412 const struct value
*original_value
,
413 const struct value_print_options
*options
,
415 generic_val_print_decorations
*decorations
)
417 struct type
*unresolved_elttype
= TYPE_TARGET_TYPE (type
);
418 struct type
*elttype
= check_typedef (unresolved_elttype
);
420 if (TYPE_LENGTH (type
) > 0 && TYPE_LENGTH (unresolved_elttype
) > 0)
422 LONGEST low_bound
, high_bound
;
424 if (!get_array_bounds (type
, &low_bound
, &high_bound
))
425 error (_("Could not determine the array high bound"));
427 if (options
->prettyformat_arrays
)
429 print_spaces_filtered (2 + 2 * recurse
, stream
);
432 fputs_filtered (decorations
->array_start
, stream
);
433 val_print_array_elements (type
, valaddr
, embedded_offset
,
435 recurse
, original_value
, options
, 0);
436 fputs_filtered (decorations
->array_end
, stream
);
440 /* Array of unspecified length: treat like pointer to first elt. */
441 print_unpacked_pointer (type
, elttype
, address
+ embedded_offset
, stream
,
447 /* generic_val_print helper for TYPE_CODE_PTR. */
450 generic_val_print_ptr (struct type
*type
, const gdb_byte
*valaddr
,
451 int embedded_offset
, struct ui_file
*stream
,
452 const struct value
*original_value
,
453 const struct value_print_options
*options
)
455 struct gdbarch
*gdbarch
= get_type_arch (type
);
456 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
458 if (options
->format
&& options
->format
!= 's')
460 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
461 original_value
, options
, 0, stream
);
465 struct type
*unresolved_elttype
= TYPE_TARGET_TYPE(type
);
466 struct type
*elttype
= check_typedef (unresolved_elttype
);
467 CORE_ADDR addr
= unpack_pointer (type
,
468 valaddr
+ embedded_offset
* unit_size
);
470 print_unpacked_pointer (type
, elttype
, addr
, stream
, options
);
475 /* generic_val_print helper for TYPE_CODE_MEMBERPTR. */
478 generic_val_print_memberptr (struct type
*type
, const gdb_byte
*valaddr
,
479 int embedded_offset
, struct ui_file
*stream
,
480 const struct value
*original_value
,
481 const struct value_print_options
*options
)
483 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
484 original_value
, options
, 0, stream
);
487 /* generic_val_print helper for TYPE_CODE_REF. */
490 generic_val_print_ref (struct type
*type
, const gdb_byte
*valaddr
,
491 int embedded_offset
, struct ui_file
*stream
, int recurse
,
492 const struct value
*original_value
,
493 const struct value_print_options
*options
)
495 struct gdbarch
*gdbarch
= get_type_arch (type
);
496 struct type
*elttype
= check_typedef (TYPE_TARGET_TYPE (type
));
498 if (options
->addressprint
)
501 = extract_typed_address (valaddr
+ embedded_offset
, type
);
503 fprintf_filtered (stream
, "@");
504 fputs_filtered (paddress (gdbarch
, addr
), stream
);
505 if (options
->deref_ref
)
506 fputs_filtered (": ", stream
);
508 /* De-reference the reference. */
509 if (options
->deref_ref
)
511 if (TYPE_CODE (elttype
) != TYPE_CODE_UNDEF
)
513 struct value
*deref_val
;
515 deref_val
= coerce_ref_if_computed (original_value
);
516 if (deref_val
!= NULL
)
518 /* More complicated computed references are not supported. */
519 gdb_assert (embedded_offset
== 0);
522 deref_val
= value_at (TYPE_TARGET_TYPE (type
),
523 unpack_pointer (type
,
525 + embedded_offset
)));
527 common_val_print (deref_val
, stream
, recurse
, options
,
531 fputs_filtered ("???", stream
);
535 /* Helper function for generic_val_print_enum.
536 This is also used to print enums in TYPE_CODE_FLAGS values. */
539 generic_val_print_enum_1 (struct type
*type
, LONGEST val
,
540 struct ui_file
*stream
)
545 len
= TYPE_NFIELDS (type
);
546 for (i
= 0; i
< len
; i
++)
549 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
556 fputs_filtered (TYPE_FIELD_NAME (type
, i
), stream
);
558 else if (TYPE_FLAG_ENUM (type
))
562 /* We have a "flag" enum, so we try to decompose it into
563 pieces as appropriate. A flag enum has disjoint
564 constants by definition. */
565 fputs_filtered ("(", stream
);
566 for (i
= 0; i
< len
; ++i
)
570 if ((val
& TYPE_FIELD_ENUMVAL (type
, i
)) != 0)
573 fputs_filtered (" | ", stream
);
576 val
&= ~TYPE_FIELD_ENUMVAL (type
, i
);
577 fputs_filtered (TYPE_FIELD_NAME (type
, i
), stream
);
581 if (first
|| val
!= 0)
584 fputs_filtered (" | ", stream
);
585 fputs_filtered ("unknown: ", stream
);
586 print_longest (stream
, 'd', 0, val
);
589 fputs_filtered (")", stream
);
592 print_longest (stream
, 'd', 0, val
);
595 /* generic_val_print helper for TYPE_CODE_ENUM. */
598 generic_val_print_enum (struct type
*type
, const gdb_byte
*valaddr
,
599 int embedded_offset
, struct ui_file
*stream
,
600 const struct value
*original_value
,
601 const struct value_print_options
*options
)
604 struct gdbarch
*gdbarch
= get_type_arch (type
);
605 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
609 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
610 original_value
, options
, 0, stream
);
613 val
= unpack_long (type
, valaddr
+ embedded_offset
* unit_size
);
615 generic_val_print_enum_1 (type
, val
, stream
);
618 /* generic_val_print helper for TYPE_CODE_FLAGS. */
621 generic_val_print_flags (struct type
*type
, const gdb_byte
*valaddr
,
622 int embedded_offset
, struct ui_file
*stream
,
623 const struct value
*original_value
,
624 const struct value_print_options
*options
)
628 val_print_scalar_formatted (type
, valaddr
, embedded_offset
, original_value
,
631 val_print_type_code_flags (type
, valaddr
+ embedded_offset
, stream
);
634 /* generic_val_print helper for TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
637 generic_val_print_func (struct type
*type
, const gdb_byte
*valaddr
,
638 int embedded_offset
, CORE_ADDR address
,
639 struct ui_file
*stream
,
640 const struct value
*original_value
,
641 const struct value_print_options
*options
)
643 struct gdbarch
*gdbarch
= get_type_arch (type
);
647 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
648 original_value
, options
, 0, stream
);
652 /* FIXME, we should consider, at least for ANSI C language,
653 eliminating the distinction made between FUNCs and POINTERs
655 fprintf_filtered (stream
, "{");
656 type_print (type
, "", stream
, -1);
657 fprintf_filtered (stream
, "} ");
658 /* Try to print what function it points to, and its address. */
659 print_address_demangle (options
, gdbarch
, address
, stream
, demangle
);
663 /* generic_val_print helper for TYPE_CODE_BOOL. */
666 generic_val_print_bool (struct type
*type
, const gdb_byte
*valaddr
,
667 int embedded_offset
, struct ui_file
*stream
,
668 const struct value
*original_value
,
669 const struct value_print_options
*options
,
670 const struct generic_val_print_decorations
*decorations
)
673 struct gdbarch
*gdbarch
= get_type_arch (type
);
674 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
676 if (options
->format
|| options
->output_format
)
678 struct value_print_options opts
= *options
;
679 opts
.format
= (options
->format
? options
->format
680 : options
->output_format
);
681 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
682 original_value
, &opts
, 0, stream
);
686 val
= unpack_long (type
, valaddr
+ embedded_offset
* unit_size
);
688 fputs_filtered (decorations
->false_name
, stream
);
690 fputs_filtered (decorations
->true_name
, stream
);
692 print_longest (stream
, 'd', 0, val
);
696 /* generic_val_print helper for TYPE_CODE_INT. */
699 generic_val_print_int (struct type
*type
, const gdb_byte
*valaddr
,
700 int embedded_offset
, struct ui_file
*stream
,
701 const struct value
*original_value
,
702 const struct value_print_options
*options
)
704 struct gdbarch
*gdbarch
= get_type_arch (type
);
705 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
707 if (options
->format
|| options
->output_format
)
709 struct value_print_options opts
= *options
;
711 opts
.format
= (options
->format
? options
->format
712 : options
->output_format
);
713 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
714 original_value
, &opts
, 0, stream
);
717 val_print_type_code_int (type
, valaddr
+ embedded_offset
* unit_size
,
721 /* generic_val_print helper for TYPE_CODE_CHAR. */
724 generic_val_print_char (struct type
*type
, struct type
*unresolved_type
,
725 const gdb_byte
*valaddr
, int embedded_offset
,
726 struct ui_file
*stream
,
727 const struct value
*original_value
,
728 const struct value_print_options
*options
)
731 struct gdbarch
*gdbarch
= get_type_arch (type
);
732 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
734 if (options
->format
|| options
->output_format
)
736 struct value_print_options opts
= *options
;
738 opts
.format
= (options
->format
? options
->format
739 : options
->output_format
);
740 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
741 original_value
, &opts
, 0, stream
);
745 val
= unpack_long (type
, valaddr
+ embedded_offset
* unit_size
);
746 if (TYPE_UNSIGNED (type
))
747 fprintf_filtered (stream
, "%u", (unsigned int) val
);
749 fprintf_filtered (stream
, "%d", (int) val
);
750 fputs_filtered (" ", stream
);
751 LA_PRINT_CHAR (val
, unresolved_type
, stream
);
755 /* generic_val_print helper for TYPE_CODE_FLT. */
758 generic_val_print_float (struct type
*type
, const gdb_byte
*valaddr
,
759 int embedded_offset
, struct ui_file
*stream
,
760 const struct value
*original_value
,
761 const struct value_print_options
*options
)
763 struct gdbarch
*gdbarch
= get_type_arch (type
);
764 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
768 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
769 original_value
, options
, 0, stream
);
773 print_floating (valaddr
+ embedded_offset
* unit_size
, type
, stream
);
777 /* generic_val_print helper for TYPE_CODE_DECFLOAT. */
780 generic_val_print_decfloat (struct type
*type
, const gdb_byte
*valaddr
,
781 int embedded_offset
, struct ui_file
*stream
,
782 const struct value
*original_value
,
783 const struct value_print_options
*options
)
785 struct gdbarch
*gdbarch
= get_type_arch (type
);
786 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
789 val_print_scalar_formatted (type
, valaddr
, embedded_offset
, original_value
,
792 print_decimal_floating (valaddr
+ embedded_offset
* unit_size
, type
,
796 /* generic_val_print helper for TYPE_CODE_COMPLEX. */
799 generic_val_print_complex (struct type
*type
, const gdb_byte
*valaddr
,
800 int embedded_offset
, struct ui_file
*stream
,
801 const struct value
*original_value
,
802 const struct value_print_options
*options
,
803 const struct generic_val_print_decorations
806 struct gdbarch
*gdbarch
= get_type_arch (type
);
807 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
809 fprintf_filtered (stream
, "%s", decorations
->complex_prefix
);
811 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
), valaddr
,
812 embedded_offset
, original_value
, options
, 0,
815 print_floating (valaddr
+ embedded_offset
* unit_size
,
816 TYPE_TARGET_TYPE (type
), stream
);
817 fprintf_filtered (stream
, "%s", decorations
->complex_infix
);
819 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
), valaddr
,
821 + type_length_units (TYPE_TARGET_TYPE (type
)),
822 original_value
, options
, 0, stream
);
824 print_floating (valaddr
+ embedded_offset
* unit_size
825 + TYPE_LENGTH (TYPE_TARGET_TYPE (type
)),
826 TYPE_TARGET_TYPE (type
), stream
);
827 fprintf_filtered (stream
, "%s", decorations
->complex_suffix
);
830 /* A generic val_print that is suitable for use by language
831 implementations of the la_val_print method. This function can
832 handle most type codes, though not all, notably exception
833 TYPE_CODE_UNION and TYPE_CODE_STRUCT, which must be implemented by
836 Most arguments are as to val_print.
838 The additional DECORATIONS argument can be used to customize the
839 output in some small, language-specific ways. */
842 generic_val_print (struct type
*type
, const gdb_byte
*valaddr
,
843 int embedded_offset
, CORE_ADDR address
,
844 struct ui_file
*stream
, int recurse
,
845 const struct value
*original_value
,
846 const struct value_print_options
*options
,
847 const struct generic_val_print_decorations
*decorations
)
849 struct type
*unresolved_type
= type
;
851 type
= check_typedef (type
);
852 switch (TYPE_CODE (type
))
854 case TYPE_CODE_ARRAY
:
855 generic_val_print_array (type
, valaddr
, embedded_offset
, address
, stream
,
856 recurse
, original_value
, options
, decorations
);
859 case TYPE_CODE_MEMBERPTR
:
860 generic_val_print_memberptr (type
, valaddr
, embedded_offset
, stream
,
861 original_value
, options
);
865 generic_val_print_ptr (type
, valaddr
, embedded_offset
, stream
,
866 original_value
, options
);
870 generic_val_print_ref (type
, valaddr
, embedded_offset
, stream
, recurse
,
871 original_value
, options
);
875 generic_val_print_enum (type
, valaddr
, embedded_offset
, stream
,
876 original_value
, options
);
879 case TYPE_CODE_FLAGS
:
880 generic_val_print_flags (type
, valaddr
, embedded_offset
, stream
,
881 original_value
, options
);
885 case TYPE_CODE_METHOD
:
886 generic_val_print_func (type
, valaddr
, embedded_offset
, address
, stream
,
887 original_value
, options
);
891 generic_val_print_bool (type
, valaddr
, embedded_offset
, stream
,
892 original_value
, options
, decorations
);
895 case TYPE_CODE_RANGE
:
896 /* FIXME: create_static_range_type does not set the unsigned bit in a
897 range type (I think it probably should copy it from the
898 target type), so we won't print values which are too large to
899 fit in a signed integer correctly. */
900 /* FIXME: Doesn't handle ranges of enums correctly. (Can't just
901 print with the target type, though, because the size of our
902 type and the target type might differ). */
907 generic_val_print_int (type
, valaddr
, embedded_offset
, stream
,
908 original_value
, options
);
912 generic_val_print_char (type
, unresolved_type
, valaddr
, embedded_offset
,
913 stream
, original_value
, options
);
917 generic_val_print_float (type
, valaddr
, embedded_offset
, stream
,
918 original_value
, options
);
921 case TYPE_CODE_DECFLOAT
:
922 generic_val_print_decfloat (type
, valaddr
, embedded_offset
, stream
,
923 original_value
, options
);
927 fputs_filtered (decorations
->void_name
, stream
);
930 case TYPE_CODE_ERROR
:
931 fprintf_filtered (stream
, "%s", TYPE_ERROR_NAME (type
));
934 case TYPE_CODE_UNDEF
:
935 /* This happens (without TYPE_FLAG_STUB set) on systems which
936 don't use dbx xrefs (NO_DBX_XREFS in gcc) if a file has a
937 "struct foo *bar" and no complete type for struct foo in that
939 fprintf_filtered (stream
, _("<incomplete type>"));
942 case TYPE_CODE_COMPLEX
:
943 generic_val_print_complex (type
, valaddr
, embedded_offset
, stream
,
944 original_value
, options
, decorations
);
947 case TYPE_CODE_UNION
:
948 case TYPE_CODE_STRUCT
:
949 case TYPE_CODE_METHODPTR
:
951 error (_("Unhandled type code %d in symbol table."),
957 /* Print using the given LANGUAGE the data of type TYPE located at
958 VALADDR + EMBEDDED_OFFSET (within GDB), which came from the
959 inferior at address ADDRESS + EMBEDDED_OFFSET, onto stdio stream
960 STREAM according to OPTIONS. VAL is the whole object that came
961 from ADDRESS. VALADDR must point to the head of VAL's contents
964 The language printers will pass down an adjusted EMBEDDED_OFFSET to
965 further helper subroutines as subfields of TYPE are printed. In
966 such cases, VALADDR is passed down unadjusted, as well as VAL, so
967 that VAL can be queried for metadata about the contents data being
968 printed, using EMBEDDED_OFFSET as an offset into VAL's contents
969 buffer. For example: "has this field been optimized out", or "I'm
970 printing an object while inspecting a traceframe; has this
971 particular piece of data been collected?".
973 RECURSE indicates the amount of indentation to supply before
974 continuation lines; this amount is roughly twice the value of
978 val_print (struct type
*type
, const gdb_byte
*valaddr
, int embedded_offset
,
979 CORE_ADDR address
, struct ui_file
*stream
, int recurse
,
980 const struct value
*val
,
981 const struct value_print_options
*options
,
982 const struct language_defn
*language
)
985 struct value_print_options local_opts
= *options
;
986 struct type
*real_type
= check_typedef (type
);
988 if (local_opts
.prettyformat
== Val_prettyformat_default
)
989 local_opts
.prettyformat
= (local_opts
.prettyformat_structs
990 ? Val_prettyformat
: Val_no_prettyformat
);
994 /* Ensure that the type is complete and not just a stub. If the type is
995 only a stub and we can't find and substitute its complete type, then
996 print appropriate string and return. */
998 if (TYPE_STUB (real_type
))
1000 fprintf_filtered (stream
, _("<incomplete type>"));
1005 if (!valprint_check_validity (stream
, real_type
, embedded_offset
, val
))
1010 ret
= apply_ext_lang_val_pretty_printer (type
, valaddr
, embedded_offset
,
1011 address
, stream
, recurse
,
1012 val
, options
, language
);
1017 /* Handle summary mode. If the value is a scalar, print it;
1018 otherwise, print an ellipsis. */
1019 if (options
->summary
&& !val_print_scalar_type_p (type
))
1021 fprintf_filtered (stream
, "...");
1027 language
->la_val_print (type
, valaddr
, embedded_offset
, address
,
1028 stream
, recurse
, val
,
1031 CATCH (except
, RETURN_MASK_ERROR
)
1033 fprintf_filtered (stream
, _("<error reading variable>"));
1038 /* Check whether the value VAL is printable. Return 1 if it is;
1039 return 0 and print an appropriate error message to STREAM according to
1040 OPTIONS if it is not. */
1043 value_check_printable (struct value
*val
, struct ui_file
*stream
,
1044 const struct value_print_options
*options
)
1048 fprintf_filtered (stream
, _("<address of value unknown>"));
1052 if (value_entirely_optimized_out (val
))
1054 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1055 fprintf_filtered (stream
, "...");
1057 val_print_optimized_out (val
, stream
);
1061 if (value_entirely_unavailable (val
))
1063 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1064 fprintf_filtered (stream
, "...");
1066 val_print_unavailable (stream
);
1070 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_INTERNAL_FUNCTION
)
1072 fprintf_filtered (stream
, _("<internal function %s>"),
1073 value_internal_function_name (val
));
1077 if (type_not_associated (value_type (val
)))
1079 val_print_not_associated (stream
);
1083 if (type_not_allocated (value_type (val
)))
1085 val_print_not_allocated (stream
);
1092 /* Print using the given LANGUAGE the value VAL onto stream STREAM according
1095 This is a preferable interface to val_print, above, because it uses
1096 GDB's value mechanism. */
1099 common_val_print (struct value
*val
, struct ui_file
*stream
, int recurse
,
1100 const struct value_print_options
*options
,
1101 const struct language_defn
*language
)
1103 if (!value_check_printable (val
, stream
, options
))
1106 if (language
->la_language
== language_ada
)
1107 /* The value might have a dynamic type, which would cause trouble
1108 below when trying to extract the value contents (since the value
1109 size is determined from the type size which is unknown). So
1110 get a fixed representation of our value. */
1111 val
= ada_to_fixed_value (val
);
1113 val_print (value_type (val
), value_contents_for_printing (val
),
1114 value_embedded_offset (val
), value_address (val
),
1116 val
, options
, language
);
1119 /* Print on stream STREAM the value VAL according to OPTIONS. The value
1120 is printed using the current_language syntax. */
1123 value_print (struct value
*val
, struct ui_file
*stream
,
1124 const struct value_print_options
*options
)
1126 if (!value_check_printable (val
, stream
, options
))
1132 = apply_ext_lang_val_pretty_printer (value_type (val
),
1133 value_contents_for_printing (val
),
1134 value_embedded_offset (val
),
1135 value_address (val
),
1137 val
, options
, current_language
);
1143 LA_VALUE_PRINT (val
, stream
, options
);
1146 /* Called by various <lang>_val_print routines to print
1147 TYPE_CODE_INT's. TYPE is the type. VALADDR is the address of the
1148 value. STREAM is where to print the value. */
1151 val_print_type_code_int (struct type
*type
, const gdb_byte
*valaddr
,
1152 struct ui_file
*stream
)
1154 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (type
));
1156 if (TYPE_LENGTH (type
) > sizeof (LONGEST
))
1160 if (TYPE_UNSIGNED (type
)
1161 && extract_long_unsigned_integer (valaddr
, TYPE_LENGTH (type
),
1164 print_longest (stream
, 'u', 0, val
);
1168 /* Signed, or we couldn't turn an unsigned value into a
1169 LONGEST. For signed values, one could assume two's
1170 complement (a reasonable assumption, I think) and do
1171 better than this. */
1172 print_hex_chars (stream
, (unsigned char *) valaddr
,
1173 TYPE_LENGTH (type
), byte_order
);
1178 print_longest (stream
, TYPE_UNSIGNED (type
) ? 'u' : 'd', 0,
1179 unpack_long (type
, valaddr
));
1184 val_print_type_code_flags (struct type
*type
, const gdb_byte
*valaddr
,
1185 struct ui_file
*stream
)
1187 ULONGEST val
= unpack_long (type
, valaddr
);
1188 int field
, nfields
= TYPE_NFIELDS (type
);
1189 struct gdbarch
*gdbarch
= get_type_arch (type
);
1190 struct type
*bool_type
= builtin_type (gdbarch
)->builtin_bool
;
1192 fputs_filtered ("[", stream
);
1193 for (field
= 0; field
< nfields
; field
++)
1195 if (TYPE_FIELD_NAME (type
, field
)[0] != '\0')
1197 struct type
*field_type
= TYPE_FIELD_TYPE (type
, field
);
1199 if (field_type
== bool_type
1200 /* We require boolean types here to be one bit wide. This is a
1201 problematic place to notify the user of an internal error
1202 though. Instead just fall through and print the field as an
1204 && TYPE_FIELD_BITSIZE (type
, field
) == 1)
1206 if (val
& ((ULONGEST
)1 << TYPE_FIELD_BITPOS (type
, field
)))
1207 fprintf_filtered (stream
, " %s",
1208 TYPE_FIELD_NAME (type
, field
));
1212 unsigned field_len
= TYPE_FIELD_BITSIZE (type
, field
);
1214 = val
>> (TYPE_FIELD_BITPOS (type
, field
) - field_len
+ 1);
1216 if (field_len
< sizeof (ULONGEST
) * TARGET_CHAR_BIT
)
1217 field_val
&= ((ULONGEST
) 1 << field_len
) - 1;
1218 fprintf_filtered (stream
, " %s=",
1219 TYPE_FIELD_NAME (type
, field
));
1220 if (TYPE_CODE (field_type
) == TYPE_CODE_ENUM
)
1221 generic_val_print_enum_1 (field_type
, field_val
, stream
);
1223 print_longest (stream
, 'd', 0, field_val
);
1227 fputs_filtered (" ]", stream
);
1230 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
1231 according to OPTIONS and SIZE on STREAM. Format i is not supported
1234 This is how the elements of an array or structure are printed
1238 val_print_scalar_formatted (struct type
*type
,
1239 const gdb_byte
*valaddr
, int embedded_offset
,
1240 const struct value
*val
,
1241 const struct value_print_options
*options
,
1243 struct ui_file
*stream
)
1245 struct gdbarch
*arch
= get_type_arch (type
);
1246 int unit_size
= gdbarch_addressable_memory_unit_size (arch
);
1248 gdb_assert (val
!= NULL
);
1249 gdb_assert (valaddr
== value_contents_for_printing_const (val
));
1251 /* If we get here with a string format, try again without it. Go
1252 all the way back to the language printers, which may call us
1254 if (options
->format
== 's')
1256 struct value_print_options opts
= *options
;
1259 val_print (type
, valaddr
, embedded_offset
, 0, stream
, 0, val
, &opts
,
1264 /* A scalar object that does not have all bits available can't be
1265 printed, because all bits contribute to its representation. */
1266 if (value_bits_any_optimized_out (val
,
1267 TARGET_CHAR_BIT
* embedded_offset
,
1268 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
1269 val_print_optimized_out (val
, stream
);
1270 else if (!value_bytes_available (val
, embedded_offset
, TYPE_LENGTH (type
)))
1271 val_print_unavailable (stream
);
1273 print_scalar_formatted (valaddr
+ embedded_offset
* unit_size
, type
,
1274 options
, size
, stream
);
1277 /* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g.
1278 The raison d'etre of this function is to consolidate printing of
1279 LONG_LONG's into this one function. The format chars b,h,w,g are
1280 from print_scalar_formatted(). Numbers are printed using C
1283 USE_C_FORMAT means to use C format in all cases. Without it,
1284 'o' and 'x' format do not include the standard C radix prefix
1287 Hilfinger/2004-09-09: USE_C_FORMAT was originally called USE_LOCAL
1288 and was intended to request formating according to the current
1289 language and would be used for most integers that GDB prints. The
1290 exceptional cases were things like protocols where the format of
1291 the integer is a protocol thing, not a user-visible thing). The
1292 parameter remains to preserve the information of what things might
1293 be printed with language-specific format, should we ever resurrect
1297 print_longest (struct ui_file
*stream
, int format
, int use_c_format
,
1305 val
= int_string (val_long
, 10, 1, 0, 1); break;
1307 val
= int_string (val_long
, 10, 0, 0, 1); break;
1309 val
= int_string (val_long
, 16, 0, 0, use_c_format
); break;
1311 val
= int_string (val_long
, 16, 0, 2, 1); break;
1313 val
= int_string (val_long
, 16, 0, 4, 1); break;
1315 val
= int_string (val_long
, 16, 0, 8, 1); break;
1317 val
= int_string (val_long
, 16, 0, 16, 1); break;
1320 val
= int_string (val_long
, 8, 0, 0, use_c_format
); break;
1322 internal_error (__FILE__
, __LINE__
,
1323 _("failed internal consistency check"));
1325 fputs_filtered (val
, stream
);
1328 /* This used to be a macro, but I don't think it is called often enough
1329 to merit such treatment. */
1330 /* Convert a LONGEST to an int. This is used in contexts (e.g. number of
1331 arguments to a function, number in a value history, register number, etc.)
1332 where the value must not be larger than can fit in an int. */
1335 longest_to_int (LONGEST arg
)
1337 /* Let the compiler do the work. */
1338 int rtnval
= (int) arg
;
1340 /* Check for overflows or underflows. */
1341 if (sizeof (LONGEST
) > sizeof (int))
1345 error (_("Value out of range."));
1351 /* Print a floating point value of type TYPE (not always a
1352 TYPE_CODE_FLT), pointed to in GDB by VALADDR, on STREAM. */
1355 print_floating (const gdb_byte
*valaddr
, struct type
*type
,
1356 struct ui_file
*stream
)
1360 const struct floatformat
*fmt
= NULL
;
1361 unsigned len
= TYPE_LENGTH (type
);
1362 enum float_kind kind
;
1364 /* If it is a floating-point, check for obvious problems. */
1365 if (TYPE_CODE (type
) == TYPE_CODE_FLT
)
1366 fmt
= floatformat_from_type (type
);
1369 kind
= floatformat_classify (fmt
, valaddr
);
1370 if (kind
== float_nan
)
1372 if (floatformat_is_negative (fmt
, valaddr
))
1373 fprintf_filtered (stream
, "-");
1374 fprintf_filtered (stream
, "nan(");
1375 fputs_filtered ("0x", stream
);
1376 fputs_filtered (floatformat_mantissa (fmt
, valaddr
), stream
);
1377 fprintf_filtered (stream
, ")");
1380 else if (kind
== float_infinite
)
1382 if (floatformat_is_negative (fmt
, valaddr
))
1383 fputs_filtered ("-", stream
);
1384 fputs_filtered ("inf", stream
);
1389 /* NOTE: cagney/2002-01-15: The TYPE passed into print_floating()
1390 isn't necessarily a TYPE_CODE_FLT. Consequently, unpack_double
1391 needs to be used as that takes care of any necessary type
1392 conversions. Such conversions are of course direct to DOUBLEST
1393 and disregard any possible target floating point limitations.
1394 For instance, a u64 would be converted and displayed exactly on a
1395 host with 80 bit DOUBLEST but with loss of information on a host
1396 with 64 bit DOUBLEST. */
1398 doub
= unpack_double (type
, valaddr
, &inv
);
1401 fprintf_filtered (stream
, "<invalid float value>");
1405 /* FIXME: kettenis/2001-01-20: The following code makes too much
1406 assumptions about the host and target floating point format. */
1408 /* NOTE: cagney/2002-02-03: Since the TYPE of what was passed in may
1409 not necessarily be a TYPE_CODE_FLT, the below ignores that and
1410 instead uses the type's length to determine the precision of the
1411 floating-point value being printed. */
1413 if (len
< sizeof (double))
1414 fprintf_filtered (stream
, "%.9g", (double) doub
);
1415 else if (len
== sizeof (double))
1416 fprintf_filtered (stream
, "%.17g", (double) doub
);
1418 #ifdef PRINTF_HAS_LONG_DOUBLE
1419 fprintf_filtered (stream
, "%.35Lg", doub
);
1421 /* This at least wins with values that are representable as
1423 fprintf_filtered (stream
, "%.17g", (double) doub
);
1428 print_decimal_floating (const gdb_byte
*valaddr
, struct type
*type
,
1429 struct ui_file
*stream
)
1431 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (type
));
1432 char decstr
[MAX_DECIMAL_STRING
];
1433 unsigned len
= TYPE_LENGTH (type
);
1435 decimal_to_string (valaddr
, len
, byte_order
, decstr
);
1436 fputs_filtered (decstr
, stream
);
1441 print_binary_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1442 unsigned len
, enum bfd_endian byte_order
)
1445 #define BITS_IN_BYTES 8
1451 /* Declared "int" so it will be signed.
1452 This ensures that right shift will shift in zeros. */
1454 const int mask
= 0x080;
1456 /* FIXME: We should be not printing leading zeroes in most cases. */
1458 if (byte_order
== BFD_ENDIAN_BIG
)
1464 /* Every byte has 8 binary characters; peel off
1465 and print from the MSB end. */
1467 for (i
= 0; i
< (BITS_IN_BYTES
* sizeof (*p
)); i
++)
1469 if (*p
& (mask
>> i
))
1474 fprintf_filtered (stream
, "%1d", b
);
1480 for (p
= valaddr
+ len
- 1;
1484 for (i
= 0; i
< (BITS_IN_BYTES
* sizeof (*p
)); i
++)
1486 if (*p
& (mask
>> i
))
1491 fprintf_filtered (stream
, "%1d", b
);
1497 /* VALADDR points to an integer of LEN bytes.
1498 Print it in octal on stream or format it in buf. */
1501 print_octal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1502 unsigned len
, enum bfd_endian byte_order
)
1505 unsigned char octa1
, octa2
, octa3
, carry
;
1508 /* FIXME: We should be not printing leading zeroes in most cases. */
1511 /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track
1512 * the extra bits, which cycle every three bytes:
1514 * Byte side: 0 1 2 3
1516 * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 |
1518 * Octal side: 0 1 carry 3 4 carry ...
1520 * Cycle number: 0 1 2
1522 * But of course we are printing from the high side, so we have to
1523 * figure out where in the cycle we are so that we end up with no
1524 * left over bits at the end.
1526 #define BITS_IN_OCTAL 3
1527 #define HIGH_ZERO 0340
1528 #define LOW_ZERO 0016
1529 #define CARRY_ZERO 0003
1530 #define HIGH_ONE 0200
1531 #define MID_ONE 0160
1532 #define LOW_ONE 0016
1533 #define CARRY_ONE 0001
1534 #define HIGH_TWO 0300
1535 #define MID_TWO 0070
1536 #define LOW_TWO 0007
1538 /* For 32 we start in cycle 2, with two bits and one bit carry;
1539 for 64 in cycle in cycle 1, with one bit and a two bit carry. */
1541 cycle
= (len
* BITS_IN_BYTES
) % BITS_IN_OCTAL
;
1544 fputs_filtered ("0", stream
);
1545 if (byte_order
== BFD_ENDIAN_BIG
)
1554 /* No carry in, carry out two bits. */
1556 octa1
= (HIGH_ZERO
& *p
) >> 5;
1557 octa2
= (LOW_ZERO
& *p
) >> 2;
1558 carry
= (CARRY_ZERO
& *p
);
1559 fprintf_filtered (stream
, "%o", octa1
);
1560 fprintf_filtered (stream
, "%o", octa2
);
1564 /* Carry in two bits, carry out one bit. */
1566 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1567 octa2
= (MID_ONE
& *p
) >> 4;
1568 octa3
= (LOW_ONE
& *p
) >> 1;
1569 carry
= (CARRY_ONE
& *p
);
1570 fprintf_filtered (stream
, "%o", octa1
);
1571 fprintf_filtered (stream
, "%o", octa2
);
1572 fprintf_filtered (stream
, "%o", octa3
);
1576 /* Carry in one bit, no carry out. */
1578 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1579 octa2
= (MID_TWO
& *p
) >> 3;
1580 octa3
= (LOW_TWO
& *p
);
1582 fprintf_filtered (stream
, "%o", octa1
);
1583 fprintf_filtered (stream
, "%o", octa2
);
1584 fprintf_filtered (stream
, "%o", octa3
);
1588 error (_("Internal error in octal conversion;"));
1592 cycle
= cycle
% BITS_IN_OCTAL
;
1597 for (p
= valaddr
+ len
- 1;
1604 /* Carry out, no carry in */
1606 octa1
= (HIGH_ZERO
& *p
) >> 5;
1607 octa2
= (LOW_ZERO
& *p
) >> 2;
1608 carry
= (CARRY_ZERO
& *p
);
1609 fprintf_filtered (stream
, "%o", octa1
);
1610 fprintf_filtered (stream
, "%o", octa2
);
1614 /* Carry in, carry out */
1616 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1617 octa2
= (MID_ONE
& *p
) >> 4;
1618 octa3
= (LOW_ONE
& *p
) >> 1;
1619 carry
= (CARRY_ONE
& *p
);
1620 fprintf_filtered (stream
, "%o", octa1
);
1621 fprintf_filtered (stream
, "%o", octa2
);
1622 fprintf_filtered (stream
, "%o", octa3
);
1626 /* Carry in, no carry out */
1628 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1629 octa2
= (MID_TWO
& *p
) >> 3;
1630 octa3
= (LOW_TWO
& *p
);
1632 fprintf_filtered (stream
, "%o", octa1
);
1633 fprintf_filtered (stream
, "%o", octa2
);
1634 fprintf_filtered (stream
, "%o", octa3
);
1638 error (_("Internal error in octal conversion;"));
1642 cycle
= cycle
% BITS_IN_OCTAL
;
1648 /* VALADDR points to an integer of LEN bytes.
1649 Print it in decimal on stream or format it in buf. */
1652 print_decimal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1653 unsigned len
, enum bfd_endian byte_order
)
1656 #define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */
1657 #define CARRY_LEFT( x ) ((x) % TEN)
1658 #define SHIFT( x ) ((x) << 4)
1659 #define LOW_NIBBLE( x ) ( (x) & 0x00F)
1660 #define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4)
1663 unsigned char *digits
;
1666 int i
, j
, decimal_digits
;
1670 /* Base-ten number is less than twice as many digits
1671 as the base 16 number, which is 2 digits per byte. */
1673 decimal_len
= len
* 2 * 2;
1674 digits
= (unsigned char *) xmalloc (decimal_len
);
1676 for (i
= 0; i
< decimal_len
; i
++)
1681 /* Ok, we have an unknown number of bytes of data to be printed in
1684 * Given a hex number (in nibbles) as XYZ, we start by taking X and
1685 * decemalizing it as "x1 x2" in two decimal nibbles. Then we multiply
1686 * the nibbles by 16, add Y and re-decimalize. Repeat with Z.
1688 * The trick is that "digits" holds a base-10 number, but sometimes
1689 * the individual digits are > 10.
1691 * Outer loop is per nibble (hex digit) of input, from MSD end to
1694 decimal_digits
= 0; /* Number of decimal digits so far */
1695 p
= (byte_order
== BFD_ENDIAN_BIG
) ? valaddr
: valaddr
+ len
- 1;
1697 while ((byte_order
== BFD_ENDIAN_BIG
) ? (p
< valaddr
+ len
) : (p
>= valaddr
))
1700 * Multiply current base-ten number by 16 in place.
1701 * Each digit was between 0 and 9, now is between
1704 for (j
= 0; j
< decimal_digits
; j
++)
1706 digits
[j
] = SHIFT (digits
[j
]);
1709 /* Take the next nibble off the input and add it to what
1710 * we've got in the LSB position. Bottom 'digit' is now
1711 * between 0 and 159.
1713 * "flip" is used to run this loop twice for each byte.
1717 /* Take top nibble. */
1719 digits
[0] += HIGH_NIBBLE (*p
);
1724 /* Take low nibble and bump our pointer "p". */
1726 digits
[0] += LOW_NIBBLE (*p
);
1727 if (byte_order
== BFD_ENDIAN_BIG
)
1734 /* Re-decimalize. We have to do this often enough
1735 * that we don't overflow, but once per nibble is
1736 * overkill. Easier this way, though. Note that the
1737 * carry is often larger than 10 (e.g. max initial
1738 * carry out of lowest nibble is 15, could bubble all
1739 * the way up greater than 10). So we have to do
1740 * the carrying beyond the last current digit.
1743 for (j
= 0; j
< decimal_len
- 1; j
++)
1747 /* "/" won't handle an unsigned char with
1748 * a value that if signed would be negative.
1749 * So extend to longword int via "dummy".
1752 carry
= CARRY_OUT (dummy
);
1753 digits
[j
] = CARRY_LEFT (dummy
);
1755 if (j
>= decimal_digits
&& carry
== 0)
1758 * All higher digits are 0 and we
1759 * no longer have a carry.
1761 * Note: "j" is 0-based, "decimal_digits" is
1764 decimal_digits
= j
+ 1;
1770 /* Ok, now "digits" is the decimal representation, with
1771 the "decimal_digits" actual digits. Print! */
1773 for (i
= decimal_digits
- 1; i
>= 0; i
--)
1775 fprintf_filtered (stream
, "%1d", digits
[i
]);
1780 /* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */
1783 print_hex_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1784 unsigned len
, enum bfd_endian byte_order
)
1788 /* FIXME: We should be not printing leading zeroes in most cases. */
1790 fputs_filtered ("0x", stream
);
1791 if (byte_order
== BFD_ENDIAN_BIG
)
1797 fprintf_filtered (stream
, "%02x", *p
);
1802 for (p
= valaddr
+ len
- 1;
1806 fprintf_filtered (stream
, "%02x", *p
);
1811 /* VALADDR points to a char integer of LEN bytes.
1812 Print it out in appropriate language form on stream.
1813 Omit any leading zero chars. */
1816 print_char_chars (struct ui_file
*stream
, struct type
*type
,
1817 const gdb_byte
*valaddr
,
1818 unsigned len
, enum bfd_endian byte_order
)
1822 if (byte_order
== BFD_ENDIAN_BIG
)
1825 while (p
< valaddr
+ len
- 1 && *p
== 0)
1828 while (p
< valaddr
+ len
)
1830 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
1836 p
= valaddr
+ len
- 1;
1837 while (p
> valaddr
&& *p
== 0)
1840 while (p
>= valaddr
)
1842 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
1848 /* Print function pointer with inferior address ADDRESS onto stdio
1852 print_function_pointer_address (const struct value_print_options
*options
,
1853 struct gdbarch
*gdbarch
,
1855 struct ui_file
*stream
)
1858 = gdbarch_convert_from_func_ptr_addr (gdbarch
, address
,
1861 /* If the function pointer is represented by a description, print
1862 the address of the description. */
1863 if (options
->addressprint
&& func_addr
!= address
)
1865 fputs_filtered ("@", stream
);
1866 fputs_filtered (paddress (gdbarch
, address
), stream
);
1867 fputs_filtered (": ", stream
);
1869 print_address_demangle (options
, gdbarch
, func_addr
, stream
, demangle
);
1873 /* Print on STREAM using the given OPTIONS the index for the element
1874 at INDEX of an array whose index type is INDEX_TYPE. */
1877 maybe_print_array_index (struct type
*index_type
, LONGEST index
,
1878 struct ui_file
*stream
,
1879 const struct value_print_options
*options
)
1881 struct value
*index_value
;
1883 if (!options
->print_array_indexes
)
1886 index_value
= value_from_longest (index_type
, index
);
1888 LA_PRINT_ARRAY_INDEX (index_value
, stream
, options
);
1891 /* Called by various <lang>_val_print routines to print elements of an
1892 array in the form "<elem1>, <elem2>, <elem3>, ...".
1894 (FIXME?) Assumes array element separator is a comma, which is correct
1895 for all languages currently handled.
1896 (FIXME?) Some languages have a notation for repeated array elements,
1897 perhaps we should try to use that notation when appropriate. */
1900 val_print_array_elements (struct type
*type
,
1901 const gdb_byte
*valaddr
, int embedded_offset
,
1902 CORE_ADDR address
, struct ui_file
*stream
,
1904 const struct value
*val
,
1905 const struct value_print_options
*options
,
1908 unsigned int things_printed
= 0;
1910 struct type
*elttype
, *index_type
, *base_index_type
;
1912 /* Position of the array element we are examining to see
1913 whether it is repeated. */
1915 /* Number of repetitions we have detected so far. */
1917 LONGEST low_bound
, high_bound
;
1918 LONGEST low_pos
, high_pos
;
1920 elttype
= TYPE_TARGET_TYPE (type
);
1921 eltlen
= type_length_units (check_typedef (elttype
));
1922 index_type
= TYPE_INDEX_TYPE (type
);
1924 if (get_array_bounds (type
, &low_bound
, &high_bound
))
1926 if (TYPE_CODE (index_type
) == TYPE_CODE_RANGE
)
1927 base_index_type
= TYPE_TARGET_TYPE (index_type
);
1929 base_index_type
= index_type
;
1931 /* Non-contiguous enumerations types can by used as index types
1932 in some languages (e.g. Ada). In this case, the array length
1933 shall be computed from the positions of the first and last
1934 literal in the enumeration type, and not from the values
1935 of these literals. */
1936 if (!discrete_position (base_index_type
, low_bound
, &low_pos
)
1937 || !discrete_position (base_index_type
, high_bound
, &high_pos
))
1939 warning (_("unable to get positions in array, use bounds instead"));
1940 low_pos
= low_bound
;
1941 high_pos
= high_bound
;
1944 /* The array length should normally be HIGH_POS - LOW_POS + 1.
1945 But we have to be a little extra careful, because some languages
1946 such as Ada allow LOW_POS to be greater than HIGH_POS for
1947 empty arrays. In that situation, the array length is just zero,
1949 if (low_pos
> high_pos
)
1952 len
= high_pos
- low_pos
+ 1;
1956 warning (_("unable to get bounds of array, assuming null array"));
1961 annotate_array_section_begin (i
, elttype
);
1963 for (; i
< len
&& things_printed
< options
->print_max
; i
++)
1967 if (options
->prettyformat_arrays
)
1969 fprintf_filtered (stream
, ",\n");
1970 print_spaces_filtered (2 + 2 * recurse
, stream
);
1974 fprintf_filtered (stream
, ", ");
1977 wrap_here (n_spaces (2 + 2 * recurse
));
1978 maybe_print_array_index (index_type
, i
+ low_bound
,
1983 /* Only check for reps if repeat_count_threshold is not set to
1984 UINT_MAX (unlimited). */
1985 if (options
->repeat_count_threshold
< UINT_MAX
)
1988 && value_contents_eq (val
,
1989 embedded_offset
+ i
* eltlen
,
2000 if (reps
> options
->repeat_count_threshold
)
2002 val_print (elttype
, valaddr
, embedded_offset
+ i
* eltlen
,
2003 address
, stream
, recurse
+ 1, val
, options
,
2005 annotate_elt_rep (reps
);
2006 fprintf_filtered (stream
, " <repeats %u times>", reps
);
2007 annotate_elt_rep_end ();
2010 things_printed
+= options
->repeat_count_threshold
;
2014 val_print (elttype
, valaddr
, embedded_offset
+ i
* eltlen
,
2016 stream
, recurse
+ 1, val
, options
, current_language
);
2021 annotate_array_section_end ();
2024 fprintf_filtered (stream
, "...");
2028 /* Read LEN bytes of target memory at address MEMADDR, placing the
2029 results in GDB's memory at MYADDR. Returns a count of the bytes
2030 actually read, and optionally a target_xfer_status value in the
2031 location pointed to by ERRPTR if ERRPTR is non-null. */
2033 /* FIXME: cagney/1999-10-14: Only used by val_print_string. Can this
2034 function be eliminated. */
2037 partial_memory_read (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
2038 int len
, int *errptr
)
2040 int nread
; /* Number of bytes actually read. */
2041 int errcode
; /* Error from last read. */
2043 /* First try a complete read. */
2044 errcode
= target_read_memory (memaddr
, myaddr
, len
);
2052 /* Loop, reading one byte at a time until we get as much as we can. */
2053 for (errcode
= 0, nread
= 0; len
> 0 && errcode
== 0; nread
++, len
--)
2055 errcode
= target_read_memory (memaddr
++, myaddr
++, 1);
2057 /* If an error, the last read was unsuccessful, so adjust count. */
2070 /* Read a string from the inferior, at ADDR, with LEN characters of WIDTH bytes
2071 each. Fetch at most FETCHLIMIT characters. BUFFER will be set to a newly
2072 allocated buffer containing the string, which the caller is responsible to
2073 free, and BYTES_READ will be set to the number of bytes read. Returns 0 on
2074 success, or a target_xfer_status on failure.
2076 If LEN > 0, reads the lesser of LEN or FETCHLIMIT characters
2077 (including eventual NULs in the middle or end of the string).
2079 If LEN is -1, stops at the first null character (not necessarily
2080 the first null byte) up to a maximum of FETCHLIMIT characters. Set
2081 FETCHLIMIT to UINT_MAX to read as many characters as possible from
2084 Unless an exception is thrown, BUFFER will always be allocated, even on
2085 failure. In this case, some characters might have been read before the
2086 failure happened. Check BYTES_READ to recognize this situation.
2088 Note: There was a FIXME asking to make this code use target_read_string,
2089 but this function is more general (can read past null characters, up to
2090 given LEN). Besides, it is used much more often than target_read_string
2091 so it is more tested. Perhaps callers of target_read_string should use
2092 this function instead? */
2095 read_string (CORE_ADDR addr
, int len
, int width
, unsigned int fetchlimit
,
2096 enum bfd_endian byte_order
, gdb_byte
**buffer
, int *bytes_read
)
2098 int errcode
; /* Errno returned from bad reads. */
2099 unsigned int nfetch
; /* Chars to fetch / chars fetched. */
2100 gdb_byte
*bufptr
; /* Pointer to next available byte in
2102 struct cleanup
*old_chain
= NULL
; /* Top of the old cleanup chain. */
2104 /* Loop until we either have all the characters, or we encounter
2105 some error, such as bumping into the end of the address space. */
2109 old_chain
= make_cleanup (free_current_contents
, buffer
);
2113 /* We want fetchlimit chars, so we might as well read them all in
2115 unsigned int fetchlen
= min (len
, fetchlimit
);
2117 *buffer
= (gdb_byte
*) xmalloc (fetchlen
* width
);
2120 nfetch
= partial_memory_read (addr
, bufptr
, fetchlen
* width
, &errcode
)
2122 addr
+= nfetch
* width
;
2123 bufptr
+= nfetch
* width
;
2127 unsigned long bufsize
= 0;
2128 unsigned int chunksize
; /* Size of each fetch, in chars. */
2129 int found_nul
; /* Non-zero if we found the nul char. */
2130 gdb_byte
*limit
; /* First location past end of fetch buffer. */
2133 /* We are looking for a NUL terminator to end the fetching, so we
2134 might as well read in blocks that are large enough to be efficient,
2135 but not so large as to be slow if fetchlimit happens to be large.
2136 So we choose the minimum of 8 and fetchlimit. We used to use 200
2137 instead of 8 but 200 is way too big for remote debugging over a
2139 chunksize
= min (8, fetchlimit
);
2144 nfetch
= min (chunksize
, fetchlimit
- bufsize
);
2146 if (*buffer
== NULL
)
2147 *buffer
= (gdb_byte
*) xmalloc (nfetch
* width
);
2149 *buffer
= (gdb_byte
*) xrealloc (*buffer
,
2150 (nfetch
+ bufsize
) * width
);
2152 bufptr
= *buffer
+ bufsize
* width
;
2155 /* Read as much as we can. */
2156 nfetch
= partial_memory_read (addr
, bufptr
, nfetch
* width
, &errcode
)
2159 /* Scan this chunk for the null character that terminates the string
2160 to print. If found, we don't need to fetch any more. Note
2161 that bufptr is explicitly left pointing at the next character
2162 after the null character, or at the next character after the end
2165 limit
= bufptr
+ nfetch
* width
;
2166 while (bufptr
< limit
)
2170 c
= extract_unsigned_integer (bufptr
, width
, byte_order
);
2175 /* We don't care about any error which happened after
2176 the NUL terminator. */
2183 while (errcode
== 0 /* no error */
2184 && bufptr
- *buffer
< fetchlimit
* width
/* no overrun */
2185 && !found_nul
); /* haven't found NUL yet */
2188 { /* Length of string is really 0! */
2189 /* We always allocate *buffer. */
2190 *buffer
= bufptr
= (gdb_byte
*) xmalloc (1);
2194 /* bufptr and addr now point immediately beyond the last byte which we
2195 consider part of the string (including a '\0' which ends the string). */
2196 *bytes_read
= bufptr
- *buffer
;
2200 discard_cleanups (old_chain
);
2205 /* Return true if print_wchar can display W without resorting to a
2206 numeric escape, false otherwise. */
2209 wchar_printable (gdb_wchar_t w
)
2211 return (gdb_iswprint (w
)
2212 || w
== LCST ('\a') || w
== LCST ('\b')
2213 || w
== LCST ('\f') || w
== LCST ('\n')
2214 || w
== LCST ('\r') || w
== LCST ('\t')
2215 || w
== LCST ('\v'));
2218 /* A helper function that converts the contents of STRING to wide
2219 characters and then appends them to OUTPUT. */
2222 append_string_as_wide (const char *string
,
2223 struct obstack
*output
)
2225 for (; *string
; ++string
)
2227 gdb_wchar_t w
= gdb_btowc (*string
);
2228 obstack_grow (output
, &w
, sizeof (gdb_wchar_t
));
2232 /* Print a wide character W to OUTPUT. ORIG is a pointer to the
2233 original (target) bytes representing the character, ORIG_LEN is the
2234 number of valid bytes. WIDTH is the number of bytes in a base
2235 characters of the type. OUTPUT is an obstack to which wide
2236 characters are emitted. QUOTER is a (narrow) character indicating
2237 the style of quotes surrounding the character to be printed.
2238 NEED_ESCAPE is an in/out flag which is used to track numeric
2239 escapes across calls. */
2242 print_wchar (gdb_wint_t w
, const gdb_byte
*orig
,
2243 int orig_len
, int width
,
2244 enum bfd_endian byte_order
,
2245 struct obstack
*output
,
2246 int quoter
, int *need_escapep
)
2248 int need_escape
= *need_escapep
;
2252 /* iswprint implementation on Windows returns 1 for tab character.
2253 In order to avoid different printout on this host, we explicitly
2254 use wchar_printable function. */
2258 obstack_grow_wstr (output
, LCST ("\\a"));
2261 obstack_grow_wstr (output
, LCST ("\\b"));
2264 obstack_grow_wstr (output
, LCST ("\\f"));
2267 obstack_grow_wstr (output
, LCST ("\\n"));
2270 obstack_grow_wstr (output
, LCST ("\\r"));
2273 obstack_grow_wstr (output
, LCST ("\\t"));
2276 obstack_grow_wstr (output
, LCST ("\\v"));
2280 if (wchar_printable (w
) && (!need_escape
|| (!gdb_iswdigit (w
)
2282 && w
!= LCST ('9'))))
2284 gdb_wchar_t wchar
= w
;
2286 if (w
== gdb_btowc (quoter
) || w
== LCST ('\\'))
2287 obstack_grow_wstr (output
, LCST ("\\"));
2288 obstack_grow (output
, &wchar
, sizeof (gdb_wchar_t
));
2294 for (i
= 0; i
+ width
<= orig_len
; i
+= width
)
2299 value
= extract_unsigned_integer (&orig
[i
], width
,
2301 /* If the value fits in 3 octal digits, print it that
2302 way. Otherwise, print it as a hex escape. */
2304 xsnprintf (octal
, sizeof (octal
), "\\%.3o",
2305 (int) (value
& 0777));
2307 xsnprintf (octal
, sizeof (octal
), "\\x%lx", (long) value
);
2308 append_string_as_wide (octal
, output
);
2310 /* If we somehow have extra bytes, print them now. */
2311 while (i
< orig_len
)
2315 xsnprintf (octal
, sizeof (octal
), "\\%.3o", orig
[i
] & 0xff);
2316 append_string_as_wide (octal
, output
);
2327 /* Print the character C on STREAM as part of the contents of a
2328 literal string whose delimiter is QUOTER. ENCODING names the
2332 generic_emit_char (int c
, struct type
*type
, struct ui_file
*stream
,
2333 int quoter
, const char *encoding
)
2335 enum bfd_endian byte_order
2336 = gdbarch_byte_order (get_type_arch (type
));
2337 struct obstack wchar_buf
, output
;
2338 struct cleanup
*cleanups
;
2340 struct wchar_iterator
*iter
;
2341 int need_escape
= 0;
2343 buf
= (gdb_byte
*) alloca (TYPE_LENGTH (type
));
2344 pack_long (buf
, type
, c
);
2346 iter
= make_wchar_iterator (buf
, TYPE_LENGTH (type
),
2347 encoding
, TYPE_LENGTH (type
));
2348 cleanups
= make_cleanup_wchar_iterator (iter
);
2350 /* This holds the printable form of the wchar_t data. */
2351 obstack_init (&wchar_buf
);
2352 make_cleanup_obstack_free (&wchar_buf
);
2358 const gdb_byte
*buf
;
2360 int print_escape
= 1;
2361 enum wchar_iterate_result result
;
2363 num_chars
= wchar_iterate (iter
, &result
, &chars
, &buf
, &buflen
);
2368 /* If all characters are printable, print them. Otherwise,
2369 we're going to have to print an escape sequence. We
2370 check all characters because we want to print the target
2371 bytes in the escape sequence, and we don't know character
2372 boundaries there. */
2376 for (i
= 0; i
< num_chars
; ++i
)
2377 if (!wchar_printable (chars
[i
]))
2385 for (i
= 0; i
< num_chars
; ++i
)
2386 print_wchar (chars
[i
], buf
, buflen
,
2387 TYPE_LENGTH (type
), byte_order
,
2388 &wchar_buf
, quoter
, &need_escape
);
2392 /* This handles the NUM_CHARS == 0 case as well. */
2394 print_wchar (gdb_WEOF
, buf
, buflen
, TYPE_LENGTH (type
),
2395 byte_order
, &wchar_buf
, quoter
, &need_escape
);
2398 /* The output in the host encoding. */
2399 obstack_init (&output
);
2400 make_cleanup_obstack_free (&output
);
2402 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2403 (gdb_byte
*) obstack_base (&wchar_buf
),
2404 obstack_object_size (&wchar_buf
),
2405 sizeof (gdb_wchar_t
), &output
, translit_char
);
2406 obstack_1grow (&output
, '\0');
2408 fputs_filtered ((const char *) obstack_base (&output
), stream
);
2410 do_cleanups (cleanups
);
2413 /* Return the repeat count of the next character/byte in ITER,
2414 storing the result in VEC. */
2417 count_next_character (struct wchar_iterator
*iter
,
2418 VEC (converted_character_d
) **vec
)
2420 struct converted_character
*current
;
2422 if (VEC_empty (converted_character_d
, *vec
))
2424 struct converted_character tmp
;
2428 = wchar_iterate (iter
, &tmp
.result
, &chars
, &tmp
.buf
, &tmp
.buflen
);
2429 if (tmp
.num_chars
> 0)
2431 gdb_assert (tmp
.num_chars
< MAX_WCHARS
);
2432 memcpy (tmp
.chars
, chars
, tmp
.num_chars
* sizeof (gdb_wchar_t
));
2434 VEC_safe_push (converted_character_d
, *vec
, &tmp
);
2437 current
= VEC_last (converted_character_d
, *vec
);
2439 /* Count repeated characters or bytes. */
2440 current
->repeat_count
= 1;
2441 if (current
->num_chars
== -1)
2449 struct converted_character d
;
2456 /* Get the next character. */
2458 = wchar_iterate (iter
, &d
.result
, &chars
, &d
.buf
, &d
.buflen
);
2460 /* If a character was successfully converted, save the character
2461 into the converted character. */
2462 if (d
.num_chars
> 0)
2464 gdb_assert (d
.num_chars
< MAX_WCHARS
);
2465 memcpy (d
.chars
, chars
, WCHAR_BUFLEN (d
.num_chars
));
2468 /* Determine if the current character is the same as this
2470 if (d
.num_chars
== current
->num_chars
&& d
.result
== current
->result
)
2472 /* There are two cases to consider:
2474 1) Equality of converted character (num_chars > 0)
2475 2) Equality of non-converted character (num_chars == 0) */
2476 if ((current
->num_chars
> 0
2477 && memcmp (current
->chars
, d
.chars
,
2478 WCHAR_BUFLEN (current
->num_chars
)) == 0)
2479 || (current
->num_chars
== 0
2480 && current
->buflen
== d
.buflen
2481 && memcmp (current
->buf
, d
.buf
, current
->buflen
) == 0))
2482 ++current
->repeat_count
;
2490 /* Push this next converted character onto the result vector. */
2491 repeat
= current
->repeat_count
;
2492 VEC_safe_push (converted_character_d
, *vec
, &d
);
2497 /* Print the characters in CHARS to the OBSTACK. QUOTE_CHAR is the quote
2498 character to use with string output. WIDTH is the size of the output
2499 character type. BYTE_ORDER is the the target byte order. OPTIONS
2500 is the user's print options. */
2503 print_converted_chars_to_obstack (struct obstack
*obstack
,
2504 VEC (converted_character_d
) *chars
,
2505 int quote_char
, int width
,
2506 enum bfd_endian byte_order
,
2507 const struct value_print_options
*options
)
2510 struct converted_character
*elem
;
2511 enum {START
, SINGLE
, REPEAT
, INCOMPLETE
, FINISH
} state
, last
;
2512 gdb_wchar_t wide_quote_char
= gdb_btowc (quote_char
);
2513 int need_escape
= 0;
2515 /* Set the start state. */
2517 last
= state
= START
;
2525 /* Nothing to do. */
2532 /* We are outputting a single character
2533 (< options->repeat_count_threshold). */
2537 /* We were outputting some other type of content, so we
2538 must output and a comma and a quote. */
2540 obstack_grow_wstr (obstack
, LCST (", "));
2541 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2543 /* Output the character. */
2544 for (j
= 0; j
< elem
->repeat_count
; ++j
)
2546 if (elem
->result
== wchar_iterate_ok
)
2547 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2548 byte_order
, obstack
, quote_char
, &need_escape
);
2550 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2551 byte_order
, obstack
, quote_char
, &need_escape
);
2561 /* We are outputting a character with a repeat count
2562 greater than options->repeat_count_threshold. */
2566 /* We were outputting a single string. Terminate the
2568 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2571 obstack_grow_wstr (obstack
, LCST (", "));
2573 /* Output the character and repeat string. */
2574 obstack_grow_wstr (obstack
, LCST ("'"));
2575 if (elem
->result
== wchar_iterate_ok
)
2576 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2577 byte_order
, obstack
, quote_char
, &need_escape
);
2579 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2580 byte_order
, obstack
, quote_char
, &need_escape
);
2581 obstack_grow_wstr (obstack
, LCST ("'"));
2582 s
= xstrprintf (_(" <repeats %u times>"), elem
->repeat_count
);
2583 for (j
= 0; s
[j
]; ++j
)
2585 gdb_wchar_t w
= gdb_btowc (s
[j
]);
2586 obstack_grow (obstack
, &w
, sizeof (gdb_wchar_t
));
2593 /* We are outputting an incomplete sequence. */
2596 /* If we were outputting a string of SINGLE characters,
2597 terminate the quote. */
2598 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2601 obstack_grow_wstr (obstack
, LCST (", "));
2603 /* Output the incomplete sequence string. */
2604 obstack_grow_wstr (obstack
, LCST ("<incomplete sequence "));
2605 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
, byte_order
,
2606 obstack
, 0, &need_escape
);
2607 obstack_grow_wstr (obstack
, LCST (">"));
2609 /* We do not attempt to outupt anything after this. */
2614 /* All done. If we were outputting a string of SINGLE
2615 characters, the string must be terminated. Otherwise,
2616 REPEAT and INCOMPLETE are always left properly terminated. */
2618 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2623 /* Get the next element and state. */
2625 if (state
!= FINISH
)
2627 elem
= VEC_index (converted_character_d
, chars
, idx
++);
2628 switch (elem
->result
)
2630 case wchar_iterate_ok
:
2631 case wchar_iterate_invalid
:
2632 if (elem
->repeat_count
> options
->repeat_count_threshold
)
2638 case wchar_iterate_incomplete
:
2642 case wchar_iterate_eof
:
2650 /* Print the character string STRING, printing at most LENGTH
2651 characters. LENGTH is -1 if the string is nul terminated. TYPE is
2652 the type of each character. OPTIONS holds the printing options;
2653 printing stops early if the number hits print_max; repeat counts
2654 are printed as appropriate. Print ellipses at the end if we had to
2655 stop before printing LENGTH characters, or if FORCE_ELLIPSES.
2656 QUOTE_CHAR is the character to print at each end of the string. If
2657 C_STYLE_TERMINATOR is true, and the last character is 0, then it is
2661 generic_printstr (struct ui_file
*stream
, struct type
*type
,
2662 const gdb_byte
*string
, unsigned int length
,
2663 const char *encoding
, int force_ellipses
,
2664 int quote_char
, int c_style_terminator
,
2665 const struct value_print_options
*options
)
2667 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (type
));
2669 int width
= TYPE_LENGTH (type
);
2670 struct obstack wchar_buf
, output
;
2671 struct cleanup
*cleanup
;
2672 struct wchar_iterator
*iter
;
2674 struct converted_character
*last
;
2675 VEC (converted_character_d
) *converted_chars
;
2679 unsigned long current_char
= 1;
2681 for (i
= 0; current_char
; ++i
)
2684 current_char
= extract_unsigned_integer (string
+ i
* width
,
2690 /* If the string was not truncated due to `set print elements', and
2691 the last byte of it is a null, we don't print that, in
2692 traditional C style. */
2693 if (c_style_terminator
2696 && (extract_unsigned_integer (string
+ (length
- 1) * width
,
2697 width
, byte_order
) == 0))
2702 fputs_filtered ("\"\"", stream
);
2706 /* Arrange to iterate over the characters, in wchar_t form. */
2707 iter
= make_wchar_iterator (string
, length
* width
, encoding
, width
);
2708 cleanup
= make_cleanup_wchar_iterator (iter
);
2709 converted_chars
= NULL
;
2710 make_cleanup (VEC_cleanup (converted_character_d
), &converted_chars
);
2712 /* Convert characters until the string is over or the maximum
2713 number of printed characters has been reached. */
2715 while (i
< options
->print_max
)
2721 /* Grab the next character and repeat count. */
2722 r
= count_next_character (iter
, &converted_chars
);
2724 /* If less than zero, the end of the input string was reached. */
2728 /* Otherwise, add the count to the total print count and get
2729 the next character. */
2733 /* Get the last element and determine if the entire string was
2735 last
= VEC_last (converted_character_d
, converted_chars
);
2736 finished
= (last
->result
== wchar_iterate_eof
);
2738 /* Ensure that CONVERTED_CHARS is terminated. */
2739 last
->result
= wchar_iterate_eof
;
2741 /* WCHAR_BUF is the obstack we use to represent the string in
2743 obstack_init (&wchar_buf
);
2744 make_cleanup_obstack_free (&wchar_buf
);
2746 /* Print the output string to the obstack. */
2747 print_converted_chars_to_obstack (&wchar_buf
, converted_chars
, quote_char
,
2748 width
, byte_order
, options
);
2750 if (force_ellipses
|| !finished
)
2751 obstack_grow_wstr (&wchar_buf
, LCST ("..."));
2753 /* OUTPUT is where we collect `char's for printing. */
2754 obstack_init (&output
);
2755 make_cleanup_obstack_free (&output
);
2757 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2758 (gdb_byte
*) obstack_base (&wchar_buf
),
2759 obstack_object_size (&wchar_buf
),
2760 sizeof (gdb_wchar_t
), &output
, translit_char
);
2761 obstack_1grow (&output
, '\0');
2763 fputs_filtered ((const char *) obstack_base (&output
), stream
);
2765 do_cleanups (cleanup
);
2768 /* Print a string from the inferior, starting at ADDR and printing up to LEN
2769 characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing
2770 stops at the first null byte, otherwise printing proceeds (including null
2771 bytes) until either print_max or LEN characters have been printed,
2772 whichever is smaller. ENCODING is the name of the string's
2773 encoding. It can be NULL, in which case the target encoding is
2777 val_print_string (struct type
*elttype
, const char *encoding
,
2778 CORE_ADDR addr
, int len
,
2779 struct ui_file
*stream
,
2780 const struct value_print_options
*options
)
2782 int force_ellipsis
= 0; /* Force ellipsis to be printed if nonzero. */
2783 int err
; /* Non-zero if we got a bad read. */
2784 int found_nul
; /* Non-zero if we found the nul char. */
2785 unsigned int fetchlimit
; /* Maximum number of chars to print. */
2787 gdb_byte
*buffer
= NULL
; /* Dynamically growable fetch buffer. */
2788 struct cleanup
*old_chain
= NULL
; /* Top of the old cleanup chain. */
2789 struct gdbarch
*gdbarch
= get_type_arch (elttype
);
2790 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
2791 int width
= TYPE_LENGTH (elttype
);
2793 /* First we need to figure out the limit on the number of characters we are
2794 going to attempt to fetch and print. This is actually pretty simple. If
2795 LEN >= zero, then the limit is the minimum of LEN and print_max. If
2796 LEN is -1, then the limit is print_max. This is true regardless of
2797 whether print_max is zero, UINT_MAX (unlimited), or something in between,
2798 because finding the null byte (or available memory) is what actually
2799 limits the fetch. */
2801 fetchlimit
= (len
== -1 ? options
->print_max
: min (len
,
2802 options
->print_max
));
2804 err
= read_string (addr
, len
, width
, fetchlimit
, byte_order
,
2805 &buffer
, &bytes_read
);
2806 old_chain
= make_cleanup (xfree
, buffer
);
2810 /* We now have either successfully filled the buffer to fetchlimit,
2811 or terminated early due to an error or finding a null char when
2814 /* Determine found_nul by looking at the last character read. */
2816 if (bytes_read
>= width
)
2817 found_nul
= extract_unsigned_integer (buffer
+ bytes_read
- width
, width
,
2819 if (len
== -1 && !found_nul
)
2823 /* We didn't find a NUL terminator we were looking for. Attempt
2824 to peek at the next character. If not successful, or it is not
2825 a null byte, then force ellipsis to be printed. */
2827 peekbuf
= (gdb_byte
*) alloca (width
);
2829 if (target_read_memory (addr
, peekbuf
, width
) == 0
2830 && extract_unsigned_integer (peekbuf
, width
, byte_order
) != 0)
2833 else if ((len
>= 0 && err
!= 0) || (len
> bytes_read
/ width
))
2835 /* Getting an error when we have a requested length, or fetching less
2836 than the number of characters actually requested, always make us
2841 /* If we get an error before fetching anything, don't print a string.
2842 But if we fetch something and then get an error, print the string
2843 and then the error message. */
2844 if (err
== 0 || bytes_read
> 0)
2846 LA_PRINT_STRING (stream
, elttype
, buffer
, bytes_read
/ width
,
2847 encoding
, force_ellipsis
, options
);
2854 str
= memory_error_message (TARGET_XFER_E_IO
, gdbarch
, addr
);
2855 make_cleanup (xfree
, str
);
2857 fprintf_filtered (stream
, "<error: ");
2858 fputs_filtered (str
, stream
);
2859 fprintf_filtered (stream
, ">");
2863 do_cleanups (old_chain
);
2865 return (bytes_read
/ width
);
2869 /* The 'set input-radix' command writes to this auxiliary variable.
2870 If the requested radix is valid, INPUT_RADIX is updated; otherwise,
2871 it is left unchanged. */
2873 static unsigned input_radix_1
= 10;
2875 /* Validate an input or output radix setting, and make sure the user
2876 knows what they really did here. Radix setting is confusing, e.g.
2877 setting the input radix to "10" never changes it! */
2880 set_input_radix (char *args
, int from_tty
, struct cmd_list_element
*c
)
2882 set_input_radix_1 (from_tty
, input_radix_1
);
2886 set_input_radix_1 (int from_tty
, unsigned radix
)
2888 /* We don't currently disallow any input radix except 0 or 1, which don't
2889 make any mathematical sense. In theory, we can deal with any input
2890 radix greater than 1, even if we don't have unique digits for every
2891 value from 0 to radix-1, but in practice we lose on large radix values.
2892 We should either fix the lossage or restrict the radix range more.
2897 input_radix_1
= input_radix
;
2898 error (_("Nonsense input radix ``decimal %u''; input radix unchanged."),
2901 input_radix_1
= input_radix
= radix
;
2904 printf_filtered (_("Input radix now set to "
2905 "decimal %u, hex %x, octal %o.\n"),
2906 radix
, radix
, radix
);
2910 /* The 'set output-radix' command writes to this auxiliary variable.
2911 If the requested radix is valid, OUTPUT_RADIX is updated,
2912 otherwise, it is left unchanged. */
2914 static unsigned output_radix_1
= 10;
2917 set_output_radix (char *args
, int from_tty
, struct cmd_list_element
*c
)
2919 set_output_radix_1 (from_tty
, output_radix_1
);
2923 set_output_radix_1 (int from_tty
, unsigned radix
)
2925 /* Validate the radix and disallow ones that we aren't prepared to
2926 handle correctly, leaving the radix unchanged. */
2930 user_print_options
.output_format
= 'x'; /* hex */
2933 user_print_options
.output_format
= 0; /* decimal */
2936 user_print_options
.output_format
= 'o'; /* octal */
2939 output_radix_1
= output_radix
;
2940 error (_("Unsupported output radix ``decimal %u''; "
2941 "output radix unchanged."),
2944 output_radix_1
= output_radix
= radix
;
2947 printf_filtered (_("Output radix now set to "
2948 "decimal %u, hex %x, octal %o.\n"),
2949 radix
, radix
, radix
);
2953 /* Set both the input and output radix at once. Try to set the output radix
2954 first, since it has the most restrictive range. An radix that is valid as
2955 an output radix is also valid as an input radix.
2957 It may be useful to have an unusual input radix. If the user wishes to
2958 set an input radix that is not valid as an output radix, he needs to use
2959 the 'set input-radix' command. */
2962 set_radix (char *arg
, int from_tty
)
2966 radix
= (arg
== NULL
) ? 10 : parse_and_eval_long (arg
);
2967 set_output_radix_1 (0, radix
);
2968 set_input_radix_1 (0, radix
);
2971 printf_filtered (_("Input and output radices now set to "
2972 "decimal %u, hex %x, octal %o.\n"),
2973 radix
, radix
, radix
);
2977 /* Show both the input and output radices. */
2980 show_radix (char *arg
, int from_tty
)
2984 if (input_radix
== output_radix
)
2986 printf_filtered (_("Input and output radices set to "
2987 "decimal %u, hex %x, octal %o.\n"),
2988 input_radix
, input_radix
, input_radix
);
2992 printf_filtered (_("Input radix set to decimal "
2993 "%u, hex %x, octal %o.\n"),
2994 input_radix
, input_radix
, input_radix
);
2995 printf_filtered (_("Output radix set to decimal "
2996 "%u, hex %x, octal %o.\n"),
2997 output_radix
, output_radix
, output_radix
);
3004 set_print (char *arg
, int from_tty
)
3007 "\"set print\" must be followed by the name of a print subcommand.\n");
3008 help_list (setprintlist
, "set print ", all_commands
, gdb_stdout
);
3012 show_print (char *args
, int from_tty
)
3014 cmd_show_list (showprintlist
, from_tty
, "");
3018 set_print_raw (char *arg
, int from_tty
)
3021 "\"set print raw\" must be followed by the name of a \"print raw\" subcommand.\n");
3022 help_list (setprintrawlist
, "set print raw ", all_commands
, gdb_stdout
);
3026 show_print_raw (char *args
, int from_tty
)
3028 cmd_show_list (showprintrawlist
, from_tty
, "");
3033 _initialize_valprint (void)
3035 add_prefix_cmd ("print", no_class
, set_print
,
3036 _("Generic command for setting how things print."),
3037 &setprintlist
, "set print ", 0, &setlist
);
3038 add_alias_cmd ("p", "print", no_class
, 1, &setlist
);
3039 /* Prefer set print to set prompt. */
3040 add_alias_cmd ("pr", "print", no_class
, 1, &setlist
);
3042 add_prefix_cmd ("print", no_class
, show_print
,
3043 _("Generic command for showing print settings."),
3044 &showprintlist
, "show print ", 0, &showlist
);
3045 add_alias_cmd ("p", "print", no_class
, 1, &showlist
);
3046 add_alias_cmd ("pr", "print", no_class
, 1, &showlist
);
3048 add_prefix_cmd ("raw", no_class
, set_print_raw
,
3050 Generic command for setting what things to print in \"raw\" mode."),
3051 &setprintrawlist
, "set print raw ", 0, &setprintlist
);
3052 add_prefix_cmd ("raw", no_class
, show_print_raw
,
3053 _("Generic command for showing \"print raw\" settings."),
3054 &showprintrawlist
, "show print raw ", 0, &showprintlist
);
3056 add_setshow_uinteger_cmd ("elements", no_class
,
3057 &user_print_options
.print_max
, _("\
3058 Set limit on string chars or array elements to print."), _("\
3059 Show limit on string chars or array elements to print."), _("\
3060 \"set print elements unlimited\" causes there to be no limit."),
3063 &setprintlist
, &showprintlist
);
3065 add_setshow_boolean_cmd ("null-stop", no_class
,
3066 &user_print_options
.stop_print_at_null
, _("\
3067 Set printing of char arrays to stop at first null char."), _("\
3068 Show printing of char arrays to stop at first null char."), NULL
,
3070 show_stop_print_at_null
,
3071 &setprintlist
, &showprintlist
);
3073 add_setshow_uinteger_cmd ("repeats", no_class
,
3074 &user_print_options
.repeat_count_threshold
, _("\
3075 Set threshold for repeated print elements."), _("\
3076 Show threshold for repeated print elements."), _("\
3077 \"set print repeats unlimited\" causes all elements to be individually printed."),
3079 show_repeat_count_threshold
,
3080 &setprintlist
, &showprintlist
);
3082 add_setshow_boolean_cmd ("pretty", class_support
,
3083 &user_print_options
.prettyformat_structs
, _("\
3084 Set pretty formatting of structures."), _("\
3085 Show pretty formatting of structures."), NULL
,
3087 show_prettyformat_structs
,
3088 &setprintlist
, &showprintlist
);
3090 add_setshow_boolean_cmd ("union", class_support
,
3091 &user_print_options
.unionprint
, _("\
3092 Set printing of unions interior to structures."), _("\
3093 Show printing of unions interior to structures."), NULL
,
3096 &setprintlist
, &showprintlist
);
3098 add_setshow_boolean_cmd ("array", class_support
,
3099 &user_print_options
.prettyformat_arrays
, _("\
3100 Set pretty formatting of arrays."), _("\
3101 Show pretty formatting of arrays."), NULL
,
3103 show_prettyformat_arrays
,
3104 &setprintlist
, &showprintlist
);
3106 add_setshow_boolean_cmd ("address", class_support
,
3107 &user_print_options
.addressprint
, _("\
3108 Set printing of addresses."), _("\
3109 Show printing of addresses."), NULL
,
3112 &setprintlist
, &showprintlist
);
3114 add_setshow_boolean_cmd ("symbol", class_support
,
3115 &user_print_options
.symbol_print
, _("\
3116 Set printing of symbol names when printing pointers."), _("\
3117 Show printing of symbol names when printing pointers."),
3120 &setprintlist
, &showprintlist
);
3122 add_setshow_zuinteger_cmd ("input-radix", class_support
, &input_radix_1
,
3124 Set default input radix for entering numbers."), _("\
3125 Show default input radix for entering numbers."), NULL
,
3128 &setlist
, &showlist
);
3130 add_setshow_zuinteger_cmd ("output-radix", class_support
, &output_radix_1
,
3132 Set default output radix for printing of values."), _("\
3133 Show default output radix for printing of values."), NULL
,
3136 &setlist
, &showlist
);
3138 /* The "set radix" and "show radix" commands are special in that
3139 they are like normal set and show commands but allow two normally
3140 independent variables to be either set or shown with a single
3141 command. So the usual deprecated_add_set_cmd() and [deleted]
3142 add_show_from_set() commands aren't really appropriate. */
3143 /* FIXME: i18n: With the new add_setshow_integer command, that is no
3144 longer true - show can display anything. */
3145 add_cmd ("radix", class_support
, set_radix
, _("\
3146 Set default input and output number radices.\n\
3147 Use 'set input-radix' or 'set output-radix' to independently set each.\n\
3148 Without an argument, sets both radices back to the default value of 10."),
3150 add_cmd ("radix", class_support
, show_radix
, _("\
3151 Show the default input and output number radices.\n\
3152 Use 'show input-radix' or 'show output-radix' to independently show each."),
3155 add_setshow_boolean_cmd ("array-indexes", class_support
,
3156 &user_print_options
.print_array_indexes
, _("\
3157 Set printing of array indexes."), _("\
3158 Show printing of array indexes"), NULL
, NULL
, show_print_array_indexes
,
3159 &setprintlist
, &showprintlist
);