1 /* Print values for GDB, the GNU debugger.
3 Copyright (C) 1986-2019 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 "target-float.h"
31 #include "extension.h"
33 #include "gdb_obstack.h"
35 #include "typeprint.h"
38 #include "common/byte-vector.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 /* Command lists for set/show print raw. */
74 struct cmd_list_element
*setprintrawlist
;
75 struct cmd_list_element
*showprintrawlist
;
77 /* Prototypes for local functions */
79 static int partial_memory_read (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
80 int len
, int *errptr
);
82 static void set_input_radix_1 (int, unsigned);
84 static void set_output_radix_1 (int, unsigned);
86 static void val_print_type_code_flags (struct type
*type
,
87 const gdb_byte
*valaddr
,
88 struct ui_file
*stream
);
90 #define PRINT_MAX_DEFAULT 200 /* Start print_max off at this value. */
92 struct value_print_options user_print_options
=
94 Val_prettyformat_default
, /* prettyformat */
95 0, /* prettyformat_arrays */
96 0, /* prettyformat_structs */
101 PRINT_MAX_DEFAULT
, /* print_max */
102 10, /* repeat_count_threshold */
103 0, /* output_format */
105 0, /* stop_print_at_null */
106 0, /* print_array_indexes */
108 1, /* static_field_print */
109 1, /* pascal_static_field_print */
115 /* Initialize *OPTS to be a copy of the user print options. */
117 get_user_print_options (struct value_print_options
*opts
)
119 *opts
= user_print_options
;
122 /* Initialize *OPTS to be a copy of the user print options, but with
123 pretty-formatting disabled. */
125 get_no_prettyformat_print_options (struct value_print_options
*opts
)
127 *opts
= user_print_options
;
128 opts
->prettyformat
= Val_no_prettyformat
;
131 /* Initialize *OPTS to be a copy of the user print options, but using
132 FORMAT as the formatting option. */
134 get_formatted_print_options (struct value_print_options
*opts
,
137 *opts
= user_print_options
;
138 opts
->format
= format
;
142 show_print_max (struct ui_file
*file
, int from_tty
,
143 struct cmd_list_element
*c
, const char *value
)
145 fprintf_filtered (file
,
146 _("Limit on string chars or array "
147 "elements to print is %s.\n"),
152 /* Default input and output radixes, and output format letter. */
154 unsigned input_radix
= 10;
156 show_input_radix (struct ui_file
*file
, int from_tty
,
157 struct cmd_list_element
*c
, const char *value
)
159 fprintf_filtered (file
,
160 _("Default input radix for entering numbers is %s.\n"),
164 unsigned output_radix
= 10;
166 show_output_radix (struct ui_file
*file
, int from_tty
,
167 struct cmd_list_element
*c
, const char *value
)
169 fprintf_filtered (file
,
170 _("Default output radix for printing of values is %s.\n"),
174 /* By default we print arrays without printing the index of each element in
175 the array. This behavior can be changed by setting PRINT_ARRAY_INDEXES. */
178 show_print_array_indexes (struct ui_file
*file
, int from_tty
,
179 struct cmd_list_element
*c
, const char *value
)
181 fprintf_filtered (file
, _("Printing of array indexes is %s.\n"), value
);
184 /* Print repeat counts if there are more than this many repetitions of an
185 element in an array. Referenced by the low level language dependent
189 show_repeat_count_threshold (struct ui_file
*file
, int from_tty
,
190 struct cmd_list_element
*c
, const char *value
)
192 fprintf_filtered (file
, _("Threshold for repeated print elements is %s.\n"),
196 /* If nonzero, stops printing of char arrays at first null. */
199 show_stop_print_at_null (struct ui_file
*file
, int from_tty
,
200 struct cmd_list_element
*c
, const char *value
)
202 fprintf_filtered (file
,
203 _("Printing of char arrays to stop "
204 "at first null char is %s.\n"),
208 /* Controls pretty printing of structures. */
211 show_prettyformat_structs (struct ui_file
*file
, int from_tty
,
212 struct cmd_list_element
*c
, const char *value
)
214 fprintf_filtered (file
, _("Pretty formatting of structures is %s.\n"), value
);
217 /* Controls pretty printing of arrays. */
220 show_prettyformat_arrays (struct ui_file
*file
, int from_tty
,
221 struct cmd_list_element
*c
, const char *value
)
223 fprintf_filtered (file
, _("Pretty formatting of arrays is %s.\n"), value
);
226 /* If nonzero, causes unions inside structures or other unions to be
230 show_unionprint (struct ui_file
*file
, int from_tty
,
231 struct cmd_list_element
*c
, const char *value
)
233 fprintf_filtered (file
,
234 _("Printing of unions interior to structures is %s.\n"),
238 /* If nonzero, causes machine addresses to be printed in certain contexts. */
241 show_addressprint (struct ui_file
*file
, int from_tty
,
242 struct cmd_list_element
*c
, const char *value
)
244 fprintf_filtered (file
, _("Printing of addresses is %s.\n"), value
);
248 show_symbol_print (struct ui_file
*file
, int from_tty
,
249 struct cmd_list_element
*c
, const char *value
)
251 fprintf_filtered (file
,
252 _("Printing of symbols when printing pointers is %s.\n"),
258 /* A helper function for val_print. When printing in "summary" mode,
259 we want to print scalar arguments, but not aggregate arguments.
260 This function distinguishes between the two. */
263 val_print_scalar_type_p (struct type
*type
)
265 type
= check_typedef (type
);
266 while (TYPE_IS_REFERENCE (type
))
268 type
= TYPE_TARGET_TYPE (type
);
269 type
= check_typedef (type
);
271 switch (TYPE_CODE (type
))
273 case TYPE_CODE_ARRAY
:
274 case TYPE_CODE_STRUCT
:
275 case TYPE_CODE_UNION
:
277 case TYPE_CODE_STRING
:
284 /* See its definition in value.h. */
287 valprint_check_validity (struct ui_file
*stream
,
289 LONGEST embedded_offset
,
290 const struct value
*val
)
292 type
= check_typedef (type
);
294 if (type_not_associated (type
))
296 val_print_not_associated (stream
);
300 if (type_not_allocated (type
))
302 val_print_not_allocated (stream
);
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 const int is_ref
= TYPE_CODE (type
) == TYPE_CODE_REF
;
322 int ref_is_addressable
= 0;
326 const struct value
*deref_val
= coerce_ref_if_computed (val
);
328 if (deref_val
!= NULL
)
329 ref_is_addressable
= value_lval_const (deref_val
) == lval_memory
;
332 if (!is_ref
|| !ref_is_addressable
)
333 fputs_filtered (_("<synthetic pointer>"), stream
);
335 /* C++ references should be valid even if they're synthetic. */
339 if (!value_bytes_available (val
, embedded_offset
, TYPE_LENGTH (type
)))
341 val_print_unavailable (stream
);
350 val_print_optimized_out (const struct value
*val
, struct ui_file
*stream
)
352 if (val
!= NULL
&& value_lval_const (val
) == lval_register
)
353 val_print_not_saved (stream
);
355 fprintf_filtered (stream
, _("<optimized out>"));
359 val_print_not_saved (struct ui_file
*stream
)
361 fprintf_filtered (stream
, _("<not saved>"));
365 val_print_unavailable (struct ui_file
*stream
)
367 fprintf_filtered (stream
, _("<unavailable>"));
371 val_print_invalid_address (struct ui_file
*stream
)
373 fprintf_filtered (stream
, _("<invalid address>"));
376 /* Print a pointer based on the type of its target.
378 Arguments to this functions are roughly the same as those in
379 generic_val_print. A difference is that ADDRESS is the address to print,
380 with embedded_offset already added. ELTTYPE represents
381 the pointed type after check_typedef. */
384 print_unpacked_pointer (struct type
*type
, struct type
*elttype
,
385 CORE_ADDR address
, struct ui_file
*stream
,
386 const struct value_print_options
*options
)
388 struct gdbarch
*gdbarch
= get_type_arch (type
);
390 if (TYPE_CODE (elttype
) == TYPE_CODE_FUNC
)
392 /* Try to print what function it points to. */
393 print_function_pointer_address (options
, gdbarch
, address
, stream
);
397 if (options
->symbol_print
)
398 print_address_demangle (options
, gdbarch
, address
, stream
, demangle
);
399 else if (options
->addressprint
)
400 fputs_filtered (paddress (gdbarch
, address
), stream
);
403 /* generic_val_print helper for TYPE_CODE_ARRAY. */
406 generic_val_print_array (struct type
*type
,
407 int embedded_offset
, CORE_ADDR address
,
408 struct ui_file
*stream
, int recurse
,
409 struct value
*original_value
,
410 const struct value_print_options
*options
,
412 generic_val_print_decorations
*decorations
)
414 struct type
*unresolved_elttype
= TYPE_TARGET_TYPE (type
);
415 struct type
*elttype
= check_typedef (unresolved_elttype
);
417 if (TYPE_LENGTH (type
) > 0 && TYPE_LENGTH (unresolved_elttype
) > 0)
419 LONGEST low_bound
, high_bound
;
421 if (!get_array_bounds (type
, &low_bound
, &high_bound
))
422 error (_("Could not determine the array high bound"));
424 if (options
->prettyformat_arrays
)
426 print_spaces_filtered (2 + 2 * recurse
, stream
);
429 fputs_filtered (decorations
->array_start
, stream
);
430 val_print_array_elements (type
, embedded_offset
,
432 recurse
, original_value
, options
, 0);
433 fputs_filtered (decorations
->array_end
, stream
);
437 /* Array of unspecified length: treat like pointer to first elt. */
438 print_unpacked_pointer (type
, elttype
, address
+ embedded_offset
, stream
,
444 /* generic_val_print helper for TYPE_CODE_PTR. */
447 generic_val_print_ptr (struct type
*type
,
448 int embedded_offset
, struct ui_file
*stream
,
449 struct value
*original_value
,
450 const struct value_print_options
*options
)
452 struct gdbarch
*gdbarch
= get_type_arch (type
);
453 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
455 if (options
->format
&& options
->format
!= 's')
457 val_print_scalar_formatted (type
, embedded_offset
,
458 original_value
, options
, 0, stream
);
462 struct type
*unresolved_elttype
= TYPE_TARGET_TYPE(type
);
463 struct type
*elttype
= check_typedef (unresolved_elttype
);
464 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
465 CORE_ADDR addr
= unpack_pointer (type
,
466 valaddr
+ embedded_offset
* unit_size
);
468 print_unpacked_pointer (type
, elttype
, addr
, stream
, options
);
473 /* generic_val_print helper for TYPE_CODE_MEMBERPTR. */
476 generic_val_print_memberptr (struct type
*type
,
477 int embedded_offset
, struct ui_file
*stream
,
478 struct value
*original_value
,
479 const struct value_print_options
*options
)
481 val_print_scalar_formatted (type
, embedded_offset
,
482 original_value
, options
, 0, stream
);
485 /* Print '@' followed by the address contained in ADDRESS_BUFFER. */
488 print_ref_address (struct type
*type
, const gdb_byte
*address_buffer
,
489 int embedded_offset
, struct ui_file
*stream
)
491 struct gdbarch
*gdbarch
= get_type_arch (type
);
493 if (address_buffer
!= NULL
)
496 = extract_typed_address (address_buffer
+ embedded_offset
, type
);
498 fprintf_filtered (stream
, "@");
499 fputs_filtered (paddress (gdbarch
, address
), stream
);
501 /* Else: we have a non-addressable value, such as a DW_AT_const_value. */
504 /* If VAL is addressable, return the value contents buffer of a value that
505 represents a pointer to VAL. Otherwise return NULL. */
507 static const gdb_byte
*
508 get_value_addr_contents (struct value
*deref_val
)
510 gdb_assert (deref_val
!= NULL
);
512 if (value_lval_const (deref_val
) == lval_memory
)
513 return value_contents_for_printing_const (value_addr (deref_val
));
516 /* We have a non-addressable value, such as a DW_AT_const_value. */
521 /* generic_val_print helper for TYPE_CODE_{RVALUE_,}REF. */
524 generic_val_print_ref (struct type
*type
,
525 int embedded_offset
, struct ui_file
*stream
, int recurse
,
526 struct value
*original_value
,
527 const struct value_print_options
*options
)
529 struct type
*elttype
= check_typedef (TYPE_TARGET_TYPE (type
));
530 struct value
*deref_val
= NULL
;
531 const int value_is_synthetic
532 = value_bits_synthetic_pointer (original_value
,
533 TARGET_CHAR_BIT
* embedded_offset
,
534 TARGET_CHAR_BIT
* TYPE_LENGTH (type
));
535 const int must_coerce_ref
= ((options
->addressprint
&& value_is_synthetic
)
536 || options
->deref_ref
);
537 const int type_is_defined
= TYPE_CODE (elttype
) != TYPE_CODE_UNDEF
;
538 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
540 if (must_coerce_ref
&& type_is_defined
)
542 deref_val
= coerce_ref_if_computed (original_value
);
544 if (deref_val
!= NULL
)
546 /* More complicated computed references are not supported. */
547 gdb_assert (embedded_offset
== 0);
550 deref_val
= value_at (TYPE_TARGET_TYPE (type
),
551 unpack_pointer (type
, valaddr
+ embedded_offset
));
553 /* Else, original_value isn't a synthetic reference or we don't have to print
554 the reference's contents.
556 Notice that for references to TYPE_CODE_STRUCT, 'set print object on' will
557 cause original_value to be a not_lval instead of an lval_computed,
558 which will make value_bits_synthetic_pointer return false.
559 This happens because if options->objectprint is true, c_value_print will
560 overwrite original_value's contents with the result of coercing
561 the reference through value_addr, and then set its type back to
562 TYPE_CODE_REF. In that case we don't have to coerce the reference again;
563 we can simply treat it as non-synthetic and move on. */
565 if (options
->addressprint
)
567 const gdb_byte
*address
= (value_is_synthetic
&& type_is_defined
568 ? get_value_addr_contents (deref_val
)
571 print_ref_address (type
, address
, embedded_offset
, stream
);
573 if (options
->deref_ref
)
574 fputs_filtered (": ", stream
);
577 if (options
->deref_ref
)
580 common_val_print (deref_val
, stream
, recurse
, options
,
583 fputs_filtered ("???", stream
);
587 /* Helper function for generic_val_print_enum.
588 This is also used to print enums in TYPE_CODE_FLAGS values. */
591 generic_val_print_enum_1 (struct type
*type
, LONGEST val
,
592 struct ui_file
*stream
)
597 len
= TYPE_NFIELDS (type
);
598 for (i
= 0; i
< len
; i
++)
601 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
608 fputs_filtered (TYPE_FIELD_NAME (type
, i
), stream
);
610 else if (TYPE_FLAG_ENUM (type
))
614 /* We have a "flag" enum, so we try to decompose it into
615 pieces as appropriate. A flag enum has disjoint
616 constants by definition. */
617 fputs_filtered ("(", stream
);
618 for (i
= 0; i
< len
; ++i
)
622 if ((val
& TYPE_FIELD_ENUMVAL (type
, i
)) != 0)
625 fputs_filtered (" | ", stream
);
628 val
&= ~TYPE_FIELD_ENUMVAL (type
, i
);
629 fputs_filtered (TYPE_FIELD_NAME (type
, i
), stream
);
633 if (first
|| val
!= 0)
636 fputs_filtered (" | ", stream
);
637 fputs_filtered ("unknown: ", stream
);
638 print_longest (stream
, 'd', 0, val
);
641 fputs_filtered (")", stream
);
644 print_longest (stream
, 'd', 0, val
);
647 /* generic_val_print helper for TYPE_CODE_ENUM. */
650 generic_val_print_enum (struct type
*type
,
651 int embedded_offset
, struct ui_file
*stream
,
652 struct value
*original_value
,
653 const struct value_print_options
*options
)
656 struct gdbarch
*gdbarch
= get_type_arch (type
);
657 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
661 val_print_scalar_formatted (type
, embedded_offset
,
662 original_value
, options
, 0, stream
);
666 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
668 val
= unpack_long (type
, valaddr
+ embedded_offset
* unit_size
);
670 generic_val_print_enum_1 (type
, val
, stream
);
674 /* generic_val_print helper for TYPE_CODE_FLAGS. */
677 generic_val_print_flags (struct type
*type
,
678 int embedded_offset
, struct ui_file
*stream
,
679 struct value
*original_value
,
680 const struct value_print_options
*options
)
684 val_print_scalar_formatted (type
, embedded_offset
, original_value
,
688 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
690 val_print_type_code_flags (type
, valaddr
+ embedded_offset
, stream
);
694 /* generic_val_print helper for TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
697 generic_val_print_func (struct type
*type
,
698 int embedded_offset
, CORE_ADDR address
,
699 struct ui_file
*stream
,
700 struct value
*original_value
,
701 const struct value_print_options
*options
)
703 struct gdbarch
*gdbarch
= get_type_arch (type
);
707 val_print_scalar_formatted (type
, embedded_offset
,
708 original_value
, options
, 0, stream
);
712 /* FIXME, we should consider, at least for ANSI C language,
713 eliminating the distinction made between FUNCs and POINTERs
715 fprintf_filtered (stream
, "{");
716 type_print (type
, "", stream
, -1);
717 fprintf_filtered (stream
, "} ");
718 /* Try to print what function it points to, and its address. */
719 print_address_demangle (options
, gdbarch
, address
, stream
, demangle
);
723 /* generic_val_print helper for TYPE_CODE_BOOL. */
726 generic_val_print_bool (struct type
*type
,
727 int embedded_offset
, struct ui_file
*stream
,
728 struct value
*original_value
,
729 const struct value_print_options
*options
,
730 const struct generic_val_print_decorations
*decorations
)
733 struct gdbarch
*gdbarch
= get_type_arch (type
);
734 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
736 if (options
->format
|| options
->output_format
)
738 struct value_print_options opts
= *options
;
739 opts
.format
= (options
->format
? options
->format
740 : options
->output_format
);
741 val_print_scalar_formatted (type
, embedded_offset
,
742 original_value
, &opts
, 0, stream
);
746 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
748 val
= unpack_long (type
, valaddr
+ embedded_offset
* unit_size
);
750 fputs_filtered (decorations
->false_name
, stream
);
752 fputs_filtered (decorations
->true_name
, stream
);
754 print_longest (stream
, 'd', 0, val
);
758 /* generic_val_print helper for TYPE_CODE_INT. */
761 generic_val_print_int (struct type
*type
,
762 int embedded_offset
, struct ui_file
*stream
,
763 struct value
*original_value
,
764 const struct value_print_options
*options
)
766 struct value_print_options opts
= *options
;
768 opts
.format
= (options
->format
? options
->format
769 : options
->output_format
);
770 val_print_scalar_formatted (type
, embedded_offset
,
771 original_value
, &opts
, 0, stream
);
774 /* generic_val_print helper for TYPE_CODE_CHAR. */
777 generic_val_print_char (struct type
*type
, struct type
*unresolved_type
,
779 struct ui_file
*stream
,
780 struct value
*original_value
,
781 const struct value_print_options
*options
)
784 struct gdbarch
*gdbarch
= get_type_arch (type
);
785 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
787 if (options
->format
|| options
->output_format
)
789 struct value_print_options opts
= *options
;
791 opts
.format
= (options
->format
? options
->format
792 : options
->output_format
);
793 val_print_scalar_formatted (type
, embedded_offset
,
794 original_value
, &opts
, 0, stream
);
798 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
800 val
= unpack_long (type
, valaddr
+ embedded_offset
* unit_size
);
801 if (TYPE_UNSIGNED (type
))
802 fprintf_filtered (stream
, "%u", (unsigned int) val
);
804 fprintf_filtered (stream
, "%d", (int) val
);
805 fputs_filtered (" ", stream
);
806 LA_PRINT_CHAR (val
, unresolved_type
, stream
);
810 /* generic_val_print helper for TYPE_CODE_FLT and TYPE_CODE_DECFLOAT. */
813 generic_val_print_float (struct type
*type
,
814 int embedded_offset
, struct ui_file
*stream
,
815 struct value
*original_value
,
816 const struct value_print_options
*options
)
818 struct gdbarch
*gdbarch
= get_type_arch (type
);
819 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
823 val_print_scalar_formatted (type
, embedded_offset
,
824 original_value
, options
, 0, stream
);
828 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
830 print_floating (valaddr
+ embedded_offset
* unit_size
, type
, stream
);
834 /* generic_val_print helper for TYPE_CODE_COMPLEX. */
837 generic_val_print_complex (struct type
*type
,
838 int embedded_offset
, struct ui_file
*stream
,
839 struct value
*original_value
,
840 const struct value_print_options
*options
,
841 const struct generic_val_print_decorations
844 struct gdbarch
*gdbarch
= get_type_arch (type
);
845 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
846 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
848 fprintf_filtered (stream
, "%s", decorations
->complex_prefix
);
850 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
),
851 embedded_offset
, original_value
, options
, 0,
854 print_floating (valaddr
+ embedded_offset
* unit_size
,
855 TYPE_TARGET_TYPE (type
), stream
);
856 fprintf_filtered (stream
, "%s", decorations
->complex_infix
);
858 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
),
860 + type_length_units (TYPE_TARGET_TYPE (type
)),
861 original_value
, options
, 0, stream
);
863 print_floating (valaddr
+ embedded_offset
* unit_size
864 + TYPE_LENGTH (TYPE_TARGET_TYPE (type
)),
865 TYPE_TARGET_TYPE (type
), stream
);
866 fprintf_filtered (stream
, "%s", decorations
->complex_suffix
);
869 /* A generic val_print that is suitable for use by language
870 implementations of the la_val_print method. This function can
871 handle most type codes, though not all, notably exception
872 TYPE_CODE_UNION and TYPE_CODE_STRUCT, which must be implemented by
875 Most arguments are as to val_print.
877 The additional DECORATIONS argument can be used to customize the
878 output in some small, language-specific ways. */
881 generic_val_print (struct type
*type
,
882 int embedded_offset
, CORE_ADDR address
,
883 struct ui_file
*stream
, int recurse
,
884 struct value
*original_value
,
885 const struct value_print_options
*options
,
886 const struct generic_val_print_decorations
*decorations
)
888 struct type
*unresolved_type
= type
;
890 type
= check_typedef (type
);
891 switch (TYPE_CODE (type
))
893 case TYPE_CODE_ARRAY
:
894 generic_val_print_array (type
, embedded_offset
, address
, stream
,
895 recurse
, original_value
, options
, decorations
);
898 case TYPE_CODE_MEMBERPTR
:
899 generic_val_print_memberptr (type
, embedded_offset
, stream
,
900 original_value
, options
);
904 generic_val_print_ptr (type
, embedded_offset
, stream
,
905 original_value
, options
);
909 case TYPE_CODE_RVALUE_REF
:
910 generic_val_print_ref (type
, embedded_offset
, stream
, recurse
,
911 original_value
, options
);
915 generic_val_print_enum (type
, embedded_offset
, stream
,
916 original_value
, options
);
919 case TYPE_CODE_FLAGS
:
920 generic_val_print_flags (type
, embedded_offset
, stream
,
921 original_value
, options
);
925 case TYPE_CODE_METHOD
:
926 generic_val_print_func (type
, embedded_offset
, address
, stream
,
927 original_value
, options
);
931 generic_val_print_bool (type
, embedded_offset
, stream
,
932 original_value
, options
, decorations
);
935 case TYPE_CODE_RANGE
:
936 /* FIXME: create_static_range_type does not set the unsigned bit in a
937 range type (I think it probably should copy it from the
938 target type), so we won't print values which are too large to
939 fit in a signed integer correctly. */
940 /* FIXME: Doesn't handle ranges of enums correctly. (Can't just
941 print with the target type, though, because the size of our
942 type and the target type might differ). */
947 generic_val_print_int (type
, embedded_offset
, stream
,
948 original_value
, options
);
952 generic_val_print_char (type
, unresolved_type
, embedded_offset
,
953 stream
, original_value
, options
);
957 case TYPE_CODE_DECFLOAT
:
958 generic_val_print_float (type
, embedded_offset
, stream
,
959 original_value
, options
);
963 fputs_filtered (decorations
->void_name
, stream
);
966 case TYPE_CODE_ERROR
:
967 fprintf_filtered (stream
, "%s", TYPE_ERROR_NAME (type
));
970 case TYPE_CODE_UNDEF
:
971 /* This happens (without TYPE_STUB set) on systems which don't use
972 dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
973 and no complete type for struct foo in that file. */
974 fprintf_filtered (stream
, _("<incomplete type>"));
977 case TYPE_CODE_COMPLEX
:
978 generic_val_print_complex (type
, embedded_offset
, stream
,
979 original_value
, options
, decorations
);
982 case TYPE_CODE_UNION
:
983 case TYPE_CODE_STRUCT
:
984 case TYPE_CODE_METHODPTR
:
986 error (_("Unhandled type code %d in symbol table."),
991 /* Print using the given LANGUAGE the data of type TYPE located at
992 VAL's contents buffer + EMBEDDED_OFFSET (within GDB), which came
993 from the inferior at address ADDRESS + EMBEDDED_OFFSET, onto
994 stdio stream STREAM according to OPTIONS. VAL is the whole object
995 that came from ADDRESS.
997 The language printers will pass down an adjusted EMBEDDED_OFFSET to
998 further helper subroutines as subfields of TYPE are printed. In
999 such cases, VAL is passed down unadjusted, so
1000 that VAL can be queried for metadata about the contents data being
1001 printed, using EMBEDDED_OFFSET as an offset into VAL's contents
1002 buffer. For example: "has this field been optimized out", or "I'm
1003 printing an object while inspecting a traceframe; has this
1004 particular piece of data been collected?".
1006 RECURSE indicates the amount of indentation to supply before
1007 continuation lines; this amount is roughly twice the value of
1011 val_print (struct type
*type
, LONGEST embedded_offset
,
1012 CORE_ADDR address
, struct ui_file
*stream
, int recurse
,
1014 const struct value_print_options
*options
,
1015 const struct language_defn
*language
)
1018 struct value_print_options local_opts
= *options
;
1019 struct type
*real_type
= check_typedef (type
);
1021 if (local_opts
.prettyformat
== Val_prettyformat_default
)
1022 local_opts
.prettyformat
= (local_opts
.prettyformat_structs
1023 ? Val_prettyformat
: Val_no_prettyformat
);
1027 /* Ensure that the type is complete and not just a stub. If the type is
1028 only a stub and we can't find and substitute its complete type, then
1029 print appropriate string and return. */
1031 if (TYPE_STUB (real_type
))
1033 fprintf_filtered (stream
, _("<incomplete type>"));
1037 if (!valprint_check_validity (stream
, real_type
, embedded_offset
, val
))
1042 ret
= apply_ext_lang_val_pretty_printer (type
, embedded_offset
,
1043 address
, stream
, recurse
,
1044 val
, options
, language
);
1049 /* Handle summary mode. If the value is a scalar, print it;
1050 otherwise, print an ellipsis. */
1051 if (options
->summary
&& !val_print_scalar_type_p (type
))
1053 fprintf_filtered (stream
, "...");
1059 language
->la_val_print (type
, embedded_offset
, address
,
1060 stream
, recurse
, val
,
1063 catch (const gdb_exception_RETURN_MASK_ERROR
&except
)
1065 fprintf_filtered (stream
, _("<error reading variable>"));
1069 /* Check whether the value VAL is printable. Return 1 if it is;
1070 return 0 and print an appropriate error message to STREAM according to
1071 OPTIONS if it is not. */
1074 value_check_printable (struct value
*val
, struct ui_file
*stream
,
1075 const struct value_print_options
*options
)
1079 fprintf_filtered (stream
, _("<address of value unknown>"));
1083 if (value_entirely_optimized_out (val
))
1085 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1086 fprintf_filtered (stream
, "...");
1088 val_print_optimized_out (val
, stream
);
1092 if (value_entirely_unavailable (val
))
1094 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1095 fprintf_filtered (stream
, "...");
1097 val_print_unavailable (stream
);
1101 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_INTERNAL_FUNCTION
)
1103 fprintf_filtered (stream
, _("<internal function %s>"),
1104 value_internal_function_name (val
));
1108 if (type_not_associated (value_type (val
)))
1110 val_print_not_associated (stream
);
1114 if (type_not_allocated (value_type (val
)))
1116 val_print_not_allocated (stream
);
1123 /* Print using the given LANGUAGE the value VAL onto stream STREAM according
1126 This is a preferable interface to val_print, above, because it uses
1127 GDB's value mechanism. */
1130 common_val_print (struct value
*val
, struct ui_file
*stream
, int recurse
,
1131 const struct value_print_options
*options
,
1132 const struct language_defn
*language
)
1134 if (!value_check_printable (val
, stream
, options
))
1137 if (language
->la_language
== language_ada
)
1138 /* The value might have a dynamic type, which would cause trouble
1139 below when trying to extract the value contents (since the value
1140 size is determined from the type size which is unknown). So
1141 get a fixed representation of our value. */
1142 val
= ada_to_fixed_value (val
);
1144 if (value_lazy (val
))
1145 value_fetch_lazy (val
);
1147 val_print (value_type (val
),
1148 value_embedded_offset (val
), value_address (val
),
1150 val
, options
, language
);
1153 /* Print on stream STREAM the value VAL according to OPTIONS. The value
1154 is printed using the current_language syntax. */
1157 value_print (struct value
*val
, struct ui_file
*stream
,
1158 const struct value_print_options
*options
)
1160 if (!value_check_printable (val
, stream
, options
))
1166 = apply_ext_lang_val_pretty_printer (value_type (val
),
1167 value_embedded_offset (val
),
1168 value_address (val
),
1170 val
, options
, current_language
);
1176 LA_VALUE_PRINT (val
, stream
, options
);
1180 val_print_type_code_flags (struct type
*type
, const gdb_byte
*valaddr
,
1181 struct ui_file
*stream
)
1183 ULONGEST val
= unpack_long (type
, valaddr
);
1184 int field
, nfields
= TYPE_NFIELDS (type
);
1185 struct gdbarch
*gdbarch
= get_type_arch (type
);
1186 struct type
*bool_type
= builtin_type (gdbarch
)->builtin_bool
;
1188 fputs_filtered ("[", stream
);
1189 for (field
= 0; field
< nfields
; field
++)
1191 if (TYPE_FIELD_NAME (type
, field
)[0] != '\0')
1193 struct type
*field_type
= TYPE_FIELD_TYPE (type
, field
);
1195 if (field_type
== bool_type
1196 /* We require boolean types here to be one bit wide. This is a
1197 problematic place to notify the user of an internal error
1198 though. Instead just fall through and print the field as an
1200 && TYPE_FIELD_BITSIZE (type
, field
) == 1)
1202 if (val
& ((ULONGEST
)1 << TYPE_FIELD_BITPOS (type
, field
)))
1203 fprintf_filtered (stream
, " %s",
1204 TYPE_FIELD_NAME (type
, field
));
1208 unsigned field_len
= TYPE_FIELD_BITSIZE (type
, field
);
1210 = val
>> (TYPE_FIELD_BITPOS (type
, field
) - field_len
+ 1);
1212 if (field_len
< sizeof (ULONGEST
) * TARGET_CHAR_BIT
)
1213 field_val
&= ((ULONGEST
) 1 << field_len
) - 1;
1214 fprintf_filtered (stream
, " %s=",
1215 TYPE_FIELD_NAME (type
, field
));
1216 if (TYPE_CODE (field_type
) == TYPE_CODE_ENUM
)
1217 generic_val_print_enum_1 (field_type
, field_val
, stream
);
1219 print_longest (stream
, 'd', 0, field_val
);
1223 fputs_filtered (" ]", stream
);
1226 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
1227 according to OPTIONS and SIZE on STREAM. Format i is not supported
1230 This is how the elements of an array or structure are printed
1234 val_print_scalar_formatted (struct type
*type
,
1235 LONGEST embedded_offset
,
1237 const struct value_print_options
*options
,
1239 struct ui_file
*stream
)
1241 struct gdbarch
*arch
= get_type_arch (type
);
1242 int unit_size
= gdbarch_addressable_memory_unit_size (arch
);
1244 gdb_assert (val
!= NULL
);
1246 /* If we get here with a string format, try again without it. Go
1247 all the way back to the language printers, which may call us
1249 if (options
->format
== 's')
1251 struct value_print_options opts
= *options
;
1254 val_print (type
, embedded_offset
, 0, stream
, 0, val
, &opts
,
1259 /* value_contents_for_printing fetches all VAL's contents. They are
1260 needed to check whether VAL is optimized-out or unavailable
1262 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
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 floating-point type TYPE,
1352 pointed to in GDB by VALADDR, on STREAM. */
1355 print_floating (const gdb_byte
*valaddr
, struct type
*type
,
1356 struct ui_file
*stream
)
1358 std::string str
= target_float_to_string (valaddr
, type
);
1359 fputs_filtered (str
.c_str (), stream
);
1363 print_binary_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1364 unsigned len
, enum bfd_endian byte_order
, bool zero_pad
)
1369 bool seen_a_one
= false;
1371 /* Declared "int" so it will be signed.
1372 This ensures that right shift will shift in zeros. */
1374 const int mask
= 0x080;
1376 if (byte_order
== BFD_ENDIAN_BIG
)
1382 /* Every byte has 8 binary characters; peel off
1383 and print from the MSB end. */
1385 for (i
= 0; i
< (HOST_CHAR_BIT
* sizeof (*p
)); i
++)
1387 if (*p
& (mask
>> i
))
1392 if (zero_pad
|| seen_a_one
|| b
== '1')
1393 fputc_filtered (b
, stream
);
1401 for (p
= valaddr
+ len
- 1;
1405 for (i
= 0; i
< (HOST_CHAR_BIT
* sizeof (*p
)); i
++)
1407 if (*p
& (mask
>> i
))
1412 if (zero_pad
|| seen_a_one
|| b
== '1')
1413 fputc_filtered (b
, stream
);
1420 /* When not zero-padding, ensure that something is printed when the
1422 if (!zero_pad
&& !seen_a_one
)
1423 fputc_filtered ('0', stream
);
1426 /* A helper for print_octal_chars that emits a single octal digit,
1427 optionally suppressing it if is zero and updating SEEN_A_ONE. */
1430 emit_octal_digit (struct ui_file
*stream
, bool *seen_a_one
, int digit
)
1432 if (*seen_a_one
|| digit
!= 0)
1433 fprintf_filtered (stream
, "%o", digit
);
1438 /* VALADDR points to an integer of LEN bytes.
1439 Print it in octal on stream or format it in buf. */
1442 print_octal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1443 unsigned len
, enum bfd_endian byte_order
)
1446 unsigned char octa1
, octa2
, octa3
, carry
;
1449 /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track
1450 * the extra bits, which cycle every three bytes:
1452 * Byte side: 0 1 2 3
1454 * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 |
1456 * Octal side: 0 1 carry 3 4 carry ...
1458 * Cycle number: 0 1 2
1460 * But of course we are printing from the high side, so we have to
1461 * figure out where in the cycle we are so that we end up with no
1462 * left over bits at the end.
1464 #define BITS_IN_OCTAL 3
1465 #define HIGH_ZERO 0340
1466 #define LOW_ZERO 0034
1467 #define CARRY_ZERO 0003
1468 static_assert (HIGH_ZERO
+ LOW_ZERO
+ CARRY_ZERO
== 0xff,
1469 "cycle zero constants are wrong");
1470 #define HIGH_ONE 0200
1471 #define MID_ONE 0160
1472 #define LOW_ONE 0016
1473 #define CARRY_ONE 0001
1474 static_assert (HIGH_ONE
+ MID_ONE
+ LOW_ONE
+ CARRY_ONE
== 0xff,
1475 "cycle one constants are wrong");
1476 #define HIGH_TWO 0300
1477 #define MID_TWO 0070
1478 #define LOW_TWO 0007
1479 static_assert (HIGH_TWO
+ MID_TWO
+ LOW_TWO
== 0xff,
1480 "cycle two constants are wrong");
1482 /* For 32 we start in cycle 2, with two bits and one bit carry;
1483 for 64 in cycle in cycle 1, with one bit and a two bit carry. */
1485 cycle
= (len
* HOST_CHAR_BIT
) % BITS_IN_OCTAL
;
1488 fputs_filtered ("0", stream
);
1489 bool seen_a_one
= false;
1490 if (byte_order
== BFD_ENDIAN_BIG
)
1499 /* No carry in, carry out two bits. */
1501 octa1
= (HIGH_ZERO
& *p
) >> 5;
1502 octa2
= (LOW_ZERO
& *p
) >> 2;
1503 carry
= (CARRY_ZERO
& *p
);
1504 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1505 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1509 /* Carry in two bits, carry out one bit. */
1511 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1512 octa2
= (MID_ONE
& *p
) >> 4;
1513 octa3
= (LOW_ONE
& *p
) >> 1;
1514 carry
= (CARRY_ONE
& *p
);
1515 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1516 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1517 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1521 /* Carry in one bit, no carry out. */
1523 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1524 octa2
= (MID_TWO
& *p
) >> 3;
1525 octa3
= (LOW_TWO
& *p
);
1527 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1528 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1529 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1533 error (_("Internal error in octal conversion;"));
1537 cycle
= cycle
% BITS_IN_OCTAL
;
1542 for (p
= valaddr
+ len
- 1;
1549 /* Carry out, no carry in */
1551 octa1
= (HIGH_ZERO
& *p
) >> 5;
1552 octa2
= (LOW_ZERO
& *p
) >> 2;
1553 carry
= (CARRY_ZERO
& *p
);
1554 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1555 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1559 /* Carry in, carry out */
1561 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1562 octa2
= (MID_ONE
& *p
) >> 4;
1563 octa3
= (LOW_ONE
& *p
) >> 1;
1564 carry
= (CARRY_ONE
& *p
);
1565 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1566 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1567 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1571 /* Carry in, no carry out */
1573 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1574 octa2
= (MID_TWO
& *p
) >> 3;
1575 octa3
= (LOW_TWO
& *p
);
1577 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1578 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1579 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1583 error (_("Internal error in octal conversion;"));
1587 cycle
= cycle
% BITS_IN_OCTAL
;
1593 /* Possibly negate the integer represented by BYTES. It contains LEN
1594 bytes in the specified byte order. If the integer is negative,
1595 copy it into OUT_VEC, negate it, and return true. Otherwise, do
1596 nothing and return false. */
1599 maybe_negate_by_bytes (const gdb_byte
*bytes
, unsigned len
,
1600 enum bfd_endian byte_order
,
1601 gdb::byte_vector
*out_vec
)
1604 gdb_assert (len
> 0);
1605 if (byte_order
== BFD_ENDIAN_BIG
)
1606 sign_byte
= bytes
[0];
1608 sign_byte
= bytes
[len
- 1];
1609 if ((sign_byte
& 0x80) == 0)
1612 out_vec
->resize (len
);
1614 /* Compute -x == 1 + ~x. */
1615 if (byte_order
== BFD_ENDIAN_LITTLE
)
1618 for (unsigned i
= 0; i
< len
; ++i
)
1620 unsigned tem
= (0xff & ~bytes
[i
]) + carry
;
1621 (*out_vec
)[i
] = tem
& 0xff;
1628 for (unsigned i
= len
; i
> 0; --i
)
1630 unsigned tem
= (0xff & ~bytes
[i
- 1]) + carry
;
1631 (*out_vec
)[i
- 1] = tem
& 0xff;
1639 /* VALADDR points to an integer of LEN bytes.
1640 Print it in decimal on stream or format it in buf. */
1643 print_decimal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1644 unsigned len
, bool is_signed
,
1645 enum bfd_endian byte_order
)
1648 #define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */
1649 #define CARRY_LEFT( x ) ((x) % TEN)
1650 #define SHIFT( x ) ((x) << 4)
1651 #define LOW_NIBBLE( x ) ( (x) & 0x00F)
1652 #define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4)
1657 int i
, j
, decimal_digits
;
1661 gdb::byte_vector negated_bytes
;
1663 && maybe_negate_by_bytes (valaddr
, len
, byte_order
, &negated_bytes
))
1665 fputs_filtered ("-", stream
);
1666 valaddr
= negated_bytes
.data ();
1669 /* Base-ten number is less than twice as many digits
1670 as the base 16 number, which is 2 digits per byte. */
1672 decimal_len
= len
* 2 * 2;
1673 std::vector
<unsigned char> digits (decimal_len
, 0);
1675 /* Ok, we have an unknown number of bytes of data to be printed in
1678 * Given a hex number (in nibbles) as XYZ, we start by taking X and
1679 * decemalizing it as "x1 x2" in two decimal nibbles. Then we multiply
1680 * the nibbles by 16, add Y and re-decimalize. Repeat with Z.
1682 * The trick is that "digits" holds a base-10 number, but sometimes
1683 * the individual digits are > 10.
1685 * Outer loop is per nibble (hex digit) of input, from MSD end to
1688 decimal_digits
= 0; /* Number of decimal digits so far */
1689 p
= (byte_order
== BFD_ENDIAN_BIG
) ? valaddr
: valaddr
+ len
- 1;
1691 while ((byte_order
== BFD_ENDIAN_BIG
) ? (p
< valaddr
+ len
) : (p
>= valaddr
))
1694 * Multiply current base-ten number by 16 in place.
1695 * Each digit was between 0 and 9, now is between
1698 for (j
= 0; j
< decimal_digits
; j
++)
1700 digits
[j
] = SHIFT (digits
[j
]);
1703 /* Take the next nibble off the input and add it to what
1704 * we've got in the LSB position. Bottom 'digit' is now
1705 * between 0 and 159.
1707 * "flip" is used to run this loop twice for each byte.
1711 /* Take top nibble. */
1713 digits
[0] += HIGH_NIBBLE (*p
);
1718 /* Take low nibble and bump our pointer "p". */
1720 digits
[0] += LOW_NIBBLE (*p
);
1721 if (byte_order
== BFD_ENDIAN_BIG
)
1728 /* Re-decimalize. We have to do this often enough
1729 * that we don't overflow, but once per nibble is
1730 * overkill. Easier this way, though. Note that the
1731 * carry is often larger than 10 (e.g. max initial
1732 * carry out of lowest nibble is 15, could bubble all
1733 * the way up greater than 10). So we have to do
1734 * the carrying beyond the last current digit.
1737 for (j
= 0; j
< decimal_len
- 1; j
++)
1741 /* "/" won't handle an unsigned char with
1742 * a value that if signed would be negative.
1743 * So extend to longword int via "dummy".
1746 carry
= CARRY_OUT (dummy
);
1747 digits
[j
] = CARRY_LEFT (dummy
);
1749 if (j
>= decimal_digits
&& carry
== 0)
1752 * All higher digits are 0 and we
1753 * no longer have a carry.
1755 * Note: "j" is 0-based, "decimal_digits" is
1758 decimal_digits
= j
+ 1;
1764 /* Ok, now "digits" is the decimal representation, with
1765 the "decimal_digits" actual digits. Print! */
1767 for (i
= decimal_digits
- 1; i
> 0 && digits
[i
] == 0; --i
)
1772 fprintf_filtered (stream
, "%1d", digits
[i
]);
1776 /* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */
1779 print_hex_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1780 unsigned len
, enum bfd_endian byte_order
,
1785 fputs_filtered ("0x", stream
);
1786 if (byte_order
== BFD_ENDIAN_BIG
)
1792 /* Strip leading 0 bytes, but be sure to leave at least a
1793 single byte at the end. */
1794 for (; p
< valaddr
+ len
- 1 && !*p
; ++p
)
1798 const gdb_byte
*first
= p
;
1803 /* When not zero-padding, use a different format for the
1804 very first byte printed. */
1805 if (!zero_pad
&& p
== first
)
1806 fprintf_filtered (stream
, "%x", *p
);
1808 fprintf_filtered (stream
, "%02x", *p
);
1813 p
= valaddr
+ len
- 1;
1817 /* Strip leading 0 bytes, but be sure to leave at least a
1818 single byte at the end. */
1819 for (; p
>= valaddr
+ 1 && !*p
; --p
)
1823 const gdb_byte
*first
= p
;
1828 /* When not zero-padding, use a different format for the
1829 very first byte printed. */
1830 if (!zero_pad
&& p
== first
)
1831 fprintf_filtered (stream
, "%x", *p
);
1833 fprintf_filtered (stream
, "%02x", *p
);
1838 /* VALADDR points to a char integer of LEN bytes.
1839 Print it out in appropriate language form on stream.
1840 Omit any leading zero chars. */
1843 print_char_chars (struct ui_file
*stream
, struct type
*type
,
1844 const gdb_byte
*valaddr
,
1845 unsigned len
, enum bfd_endian byte_order
)
1849 if (byte_order
== BFD_ENDIAN_BIG
)
1852 while (p
< valaddr
+ len
- 1 && *p
== 0)
1855 while (p
< valaddr
+ len
)
1857 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
1863 p
= valaddr
+ len
- 1;
1864 while (p
> valaddr
&& *p
== 0)
1867 while (p
>= valaddr
)
1869 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
1875 /* Print function pointer with inferior address ADDRESS onto stdio
1879 print_function_pointer_address (const struct value_print_options
*options
,
1880 struct gdbarch
*gdbarch
,
1882 struct ui_file
*stream
)
1885 = gdbarch_convert_from_func_ptr_addr (gdbarch
, address
,
1886 current_top_target ());
1888 /* If the function pointer is represented by a description, print
1889 the address of the description. */
1890 if (options
->addressprint
&& func_addr
!= address
)
1892 fputs_filtered ("@", stream
);
1893 fputs_filtered (paddress (gdbarch
, address
), stream
);
1894 fputs_filtered (": ", stream
);
1896 print_address_demangle (options
, gdbarch
, func_addr
, stream
, demangle
);
1900 /* Print on STREAM using the given OPTIONS the index for the element
1901 at INDEX of an array whose index type is INDEX_TYPE. */
1904 maybe_print_array_index (struct type
*index_type
, LONGEST index
,
1905 struct ui_file
*stream
,
1906 const struct value_print_options
*options
)
1908 struct value
*index_value
;
1910 if (!options
->print_array_indexes
)
1913 index_value
= value_from_longest (index_type
, index
);
1915 LA_PRINT_ARRAY_INDEX (index_value
, stream
, options
);
1918 /* Called by various <lang>_val_print routines to print elements of an
1919 array in the form "<elem1>, <elem2>, <elem3>, ...".
1921 (FIXME?) Assumes array element separator is a comma, which is correct
1922 for all languages currently handled.
1923 (FIXME?) Some languages have a notation for repeated array elements,
1924 perhaps we should try to use that notation when appropriate. */
1927 val_print_array_elements (struct type
*type
,
1928 LONGEST embedded_offset
,
1929 CORE_ADDR address
, struct ui_file
*stream
,
1932 const struct value_print_options
*options
,
1935 unsigned int things_printed
= 0;
1937 struct type
*elttype
, *index_type
, *base_index_type
;
1939 /* Position of the array element we are examining to see
1940 whether it is repeated. */
1942 /* Number of repetitions we have detected so far. */
1944 LONGEST low_bound
, high_bound
;
1945 LONGEST low_pos
, high_pos
;
1947 elttype
= TYPE_TARGET_TYPE (type
);
1948 eltlen
= type_length_units (check_typedef (elttype
));
1949 index_type
= TYPE_INDEX_TYPE (type
);
1951 if (get_array_bounds (type
, &low_bound
, &high_bound
))
1953 if (TYPE_CODE (index_type
) == TYPE_CODE_RANGE
)
1954 base_index_type
= TYPE_TARGET_TYPE (index_type
);
1956 base_index_type
= index_type
;
1958 /* Non-contiguous enumerations types can by used as index types
1959 in some languages (e.g. Ada). In this case, the array length
1960 shall be computed from the positions of the first and last
1961 literal in the enumeration type, and not from the values
1962 of these literals. */
1963 if (!discrete_position (base_index_type
, low_bound
, &low_pos
)
1964 || !discrete_position (base_index_type
, high_bound
, &high_pos
))
1966 warning (_("unable to get positions in array, use bounds instead"));
1967 low_pos
= low_bound
;
1968 high_pos
= high_bound
;
1971 /* The array length should normally be HIGH_POS - LOW_POS + 1.
1972 But we have to be a little extra careful, because some languages
1973 such as Ada allow LOW_POS to be greater than HIGH_POS for
1974 empty arrays. In that situation, the array length is just zero,
1976 if (low_pos
> high_pos
)
1979 len
= high_pos
- low_pos
+ 1;
1983 warning (_("unable to get bounds of array, assuming null array"));
1988 annotate_array_section_begin (i
, elttype
);
1990 for (; i
< len
&& things_printed
< options
->print_max
; i
++)
1994 if (options
->prettyformat_arrays
)
1996 fprintf_filtered (stream
, ",\n");
1997 print_spaces_filtered (2 + 2 * recurse
, stream
);
2001 fprintf_filtered (stream
, ", ");
2004 wrap_here (n_spaces (2 + 2 * recurse
));
2005 maybe_print_array_index (index_type
, i
+ low_bound
,
2010 /* Only check for reps if repeat_count_threshold is not set to
2011 UINT_MAX (unlimited). */
2012 if (options
->repeat_count_threshold
< UINT_MAX
)
2015 && value_contents_eq (val
,
2016 embedded_offset
+ i
* eltlen
,
2027 if (reps
> options
->repeat_count_threshold
)
2029 val_print (elttype
, embedded_offset
+ i
* eltlen
,
2030 address
, stream
, recurse
+ 1, val
, options
,
2032 annotate_elt_rep (reps
);
2033 fprintf_filtered (stream
, " <repeats %u times>", reps
);
2034 annotate_elt_rep_end ();
2037 things_printed
+= options
->repeat_count_threshold
;
2041 val_print (elttype
, embedded_offset
+ i
* eltlen
,
2043 stream
, recurse
+ 1, val
, options
, current_language
);
2048 annotate_array_section_end ();
2051 fprintf_filtered (stream
, "...");
2055 /* Read LEN bytes of target memory at address MEMADDR, placing the
2056 results in GDB's memory at MYADDR. Returns a count of the bytes
2057 actually read, and optionally a target_xfer_status value in the
2058 location pointed to by ERRPTR if ERRPTR is non-null. */
2060 /* FIXME: cagney/1999-10-14: Only used by val_print_string. Can this
2061 function be eliminated. */
2064 partial_memory_read (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
2065 int len
, int *errptr
)
2067 int nread
; /* Number of bytes actually read. */
2068 int errcode
; /* Error from last read. */
2070 /* First try a complete read. */
2071 errcode
= target_read_memory (memaddr
, myaddr
, len
);
2079 /* Loop, reading one byte at a time until we get as much as we can. */
2080 for (errcode
= 0, nread
= 0; len
> 0 && errcode
== 0; nread
++, len
--)
2082 errcode
= target_read_memory (memaddr
++, myaddr
++, 1);
2084 /* If an error, the last read was unsuccessful, so adjust count. */
2097 /* Read a string from the inferior, at ADDR, with LEN characters of
2098 WIDTH bytes each. Fetch at most FETCHLIMIT characters. BUFFER
2099 will be set to a newly allocated buffer containing the string, and
2100 BYTES_READ will be set to the number of bytes read. Returns 0 on
2101 success, or a target_xfer_status on failure.
2103 If LEN > 0, reads the lesser of LEN or FETCHLIMIT characters
2104 (including eventual NULs in the middle or end of the string).
2106 If LEN is -1, stops at the first null character (not necessarily
2107 the first null byte) up to a maximum of FETCHLIMIT characters. Set
2108 FETCHLIMIT to UINT_MAX to read as many characters as possible from
2111 Unless an exception is thrown, BUFFER will always be allocated, even on
2112 failure. In this case, some characters might have been read before the
2113 failure happened. Check BYTES_READ to recognize this situation.
2115 Note: There was a FIXME asking to make this code use target_read_string,
2116 but this function is more general (can read past null characters, up to
2117 given LEN). Besides, it is used much more often than target_read_string
2118 so it is more tested. Perhaps callers of target_read_string should use
2119 this function instead? */
2122 read_string (CORE_ADDR addr
, int len
, int width
, unsigned int fetchlimit
,
2123 enum bfd_endian byte_order
, gdb::unique_xmalloc_ptr
<gdb_byte
> *buffer
,
2126 int errcode
; /* Errno returned from bad reads. */
2127 unsigned int nfetch
; /* Chars to fetch / chars fetched. */
2128 gdb_byte
*bufptr
; /* Pointer to next available byte in
2131 /* Loop until we either have all the characters, or we encounter
2132 some error, such as bumping into the end of the address space. */
2134 buffer
->reset (nullptr);
2138 /* We want fetchlimit chars, so we might as well read them all in
2140 unsigned int fetchlen
= std::min ((unsigned) len
, fetchlimit
);
2142 buffer
->reset ((gdb_byte
*) xmalloc (fetchlen
* width
));
2143 bufptr
= buffer
->get ();
2145 nfetch
= partial_memory_read (addr
, bufptr
, fetchlen
* width
, &errcode
)
2147 addr
+= nfetch
* width
;
2148 bufptr
+= nfetch
* width
;
2152 unsigned long bufsize
= 0;
2153 unsigned int chunksize
; /* Size of each fetch, in chars. */
2154 int found_nul
; /* Non-zero if we found the nul char. */
2155 gdb_byte
*limit
; /* First location past end of fetch buffer. */
2158 /* We are looking for a NUL terminator to end the fetching, so we
2159 might as well read in blocks that are large enough to be efficient,
2160 but not so large as to be slow if fetchlimit happens to be large.
2161 So we choose the minimum of 8 and fetchlimit. We used to use 200
2162 instead of 8 but 200 is way too big for remote debugging over a
2164 chunksize
= std::min (8u, fetchlimit
);
2169 nfetch
= std::min ((unsigned long) chunksize
, fetchlimit
- bufsize
);
2171 if (*buffer
== NULL
)
2172 buffer
->reset ((gdb_byte
*) xmalloc (nfetch
* width
));
2174 buffer
->reset ((gdb_byte
*) xrealloc (buffer
->release (),
2175 (nfetch
+ bufsize
) * width
));
2177 bufptr
= buffer
->get () + bufsize
* width
;
2180 /* Read as much as we can. */
2181 nfetch
= partial_memory_read (addr
, bufptr
, nfetch
* width
, &errcode
)
2184 /* Scan this chunk for the null character that terminates the string
2185 to print. If found, we don't need to fetch any more. Note
2186 that bufptr is explicitly left pointing at the next character
2187 after the null character, or at the next character after the end
2190 limit
= bufptr
+ nfetch
* width
;
2191 while (bufptr
< limit
)
2195 c
= extract_unsigned_integer (bufptr
, width
, byte_order
);
2200 /* We don't care about any error which happened after
2201 the NUL terminator. */
2208 while (errcode
== 0 /* no error */
2209 && bufptr
- buffer
->get () < fetchlimit
* width
/* no overrun */
2210 && !found_nul
); /* haven't found NUL yet */
2213 { /* Length of string is really 0! */
2214 /* We always allocate *buffer. */
2215 buffer
->reset ((gdb_byte
*) xmalloc (1));
2216 bufptr
= buffer
->get ();
2220 /* bufptr and addr now point immediately beyond the last byte which we
2221 consider part of the string (including a '\0' which ends the string). */
2222 *bytes_read
= bufptr
- buffer
->get ();
2229 /* Return true if print_wchar can display W without resorting to a
2230 numeric escape, false otherwise. */
2233 wchar_printable (gdb_wchar_t w
)
2235 return (gdb_iswprint (w
)
2236 || w
== LCST ('\a') || w
== LCST ('\b')
2237 || w
== LCST ('\f') || w
== LCST ('\n')
2238 || w
== LCST ('\r') || w
== LCST ('\t')
2239 || w
== LCST ('\v'));
2242 /* A helper function that converts the contents of STRING to wide
2243 characters and then appends them to OUTPUT. */
2246 append_string_as_wide (const char *string
,
2247 struct obstack
*output
)
2249 for (; *string
; ++string
)
2251 gdb_wchar_t w
= gdb_btowc (*string
);
2252 obstack_grow (output
, &w
, sizeof (gdb_wchar_t
));
2256 /* Print a wide character W to OUTPUT. ORIG is a pointer to the
2257 original (target) bytes representing the character, ORIG_LEN is the
2258 number of valid bytes. WIDTH is the number of bytes in a base
2259 characters of the type. OUTPUT is an obstack to which wide
2260 characters are emitted. QUOTER is a (narrow) character indicating
2261 the style of quotes surrounding the character to be printed.
2262 NEED_ESCAPE is an in/out flag which is used to track numeric
2263 escapes across calls. */
2266 print_wchar (gdb_wint_t w
, const gdb_byte
*orig
,
2267 int orig_len
, int width
,
2268 enum bfd_endian byte_order
,
2269 struct obstack
*output
,
2270 int quoter
, int *need_escapep
)
2272 int need_escape
= *need_escapep
;
2276 /* iswprint implementation on Windows returns 1 for tab character.
2277 In order to avoid different printout on this host, we explicitly
2278 use wchar_printable function. */
2282 obstack_grow_wstr (output
, LCST ("\\a"));
2285 obstack_grow_wstr (output
, LCST ("\\b"));
2288 obstack_grow_wstr (output
, LCST ("\\f"));
2291 obstack_grow_wstr (output
, LCST ("\\n"));
2294 obstack_grow_wstr (output
, LCST ("\\r"));
2297 obstack_grow_wstr (output
, LCST ("\\t"));
2300 obstack_grow_wstr (output
, LCST ("\\v"));
2304 if (wchar_printable (w
) && (!need_escape
|| (!gdb_iswdigit (w
)
2306 && w
!= LCST ('9'))))
2308 gdb_wchar_t wchar
= w
;
2310 if (w
== gdb_btowc (quoter
) || w
== LCST ('\\'))
2311 obstack_grow_wstr (output
, LCST ("\\"));
2312 obstack_grow (output
, &wchar
, sizeof (gdb_wchar_t
));
2318 for (i
= 0; i
+ width
<= orig_len
; i
+= width
)
2323 value
= extract_unsigned_integer (&orig
[i
], width
,
2325 /* If the value fits in 3 octal digits, print it that
2326 way. Otherwise, print it as a hex escape. */
2328 xsnprintf (octal
, sizeof (octal
), "\\%.3o",
2329 (int) (value
& 0777));
2331 xsnprintf (octal
, sizeof (octal
), "\\x%lx", (long) value
);
2332 append_string_as_wide (octal
, output
);
2334 /* If we somehow have extra bytes, print them now. */
2335 while (i
< orig_len
)
2339 xsnprintf (octal
, sizeof (octal
), "\\%.3o", orig
[i
] & 0xff);
2340 append_string_as_wide (octal
, output
);
2351 /* Print the character C on STREAM as part of the contents of a
2352 literal string whose delimiter is QUOTER. ENCODING names the
2356 generic_emit_char (int c
, struct type
*type
, struct ui_file
*stream
,
2357 int quoter
, const char *encoding
)
2359 enum bfd_endian byte_order
2360 = gdbarch_byte_order (get_type_arch (type
));
2362 int need_escape
= 0;
2364 c_buf
= (gdb_byte
*) alloca (TYPE_LENGTH (type
));
2365 pack_long (c_buf
, type
, c
);
2367 wchar_iterator
iter (c_buf
, TYPE_LENGTH (type
), encoding
, TYPE_LENGTH (type
));
2369 /* This holds the printable form of the wchar_t data. */
2370 auto_obstack wchar_buf
;
2376 const gdb_byte
*buf
;
2378 int print_escape
= 1;
2379 enum wchar_iterate_result result
;
2381 num_chars
= iter
.iterate (&result
, &chars
, &buf
, &buflen
);
2386 /* If all characters are printable, print them. Otherwise,
2387 we're going to have to print an escape sequence. We
2388 check all characters because we want to print the target
2389 bytes in the escape sequence, and we don't know character
2390 boundaries there. */
2394 for (i
= 0; i
< num_chars
; ++i
)
2395 if (!wchar_printable (chars
[i
]))
2403 for (i
= 0; i
< num_chars
; ++i
)
2404 print_wchar (chars
[i
], buf
, buflen
,
2405 TYPE_LENGTH (type
), byte_order
,
2406 &wchar_buf
, quoter
, &need_escape
);
2410 /* This handles the NUM_CHARS == 0 case as well. */
2412 print_wchar (gdb_WEOF
, buf
, buflen
, TYPE_LENGTH (type
),
2413 byte_order
, &wchar_buf
, quoter
, &need_escape
);
2416 /* The output in the host encoding. */
2417 auto_obstack output
;
2419 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2420 (gdb_byte
*) obstack_base (&wchar_buf
),
2421 obstack_object_size (&wchar_buf
),
2422 sizeof (gdb_wchar_t
), &output
, translit_char
);
2423 obstack_1grow (&output
, '\0');
2425 fputs_filtered ((const char *) obstack_base (&output
), stream
);
2428 /* Return the repeat count of the next character/byte in ITER,
2429 storing the result in VEC. */
2432 count_next_character (wchar_iterator
*iter
,
2433 std::vector
<converted_character
> *vec
)
2435 struct converted_character
*current
;
2439 struct converted_character tmp
;
2443 = iter
->iterate (&tmp
.result
, &chars
, &tmp
.buf
, &tmp
.buflen
);
2444 if (tmp
.num_chars
> 0)
2446 gdb_assert (tmp
.num_chars
< MAX_WCHARS
);
2447 memcpy (tmp
.chars
, chars
, tmp
.num_chars
* sizeof (gdb_wchar_t
));
2449 vec
->push_back (tmp
);
2452 current
= &vec
->back ();
2454 /* Count repeated characters or bytes. */
2455 current
->repeat_count
= 1;
2456 if (current
->num_chars
== -1)
2464 struct converted_character d
;
2471 /* Get the next character. */
2472 d
.num_chars
= iter
->iterate (&d
.result
, &chars
, &d
.buf
, &d
.buflen
);
2474 /* If a character was successfully converted, save the character
2475 into the converted character. */
2476 if (d
.num_chars
> 0)
2478 gdb_assert (d
.num_chars
< MAX_WCHARS
);
2479 memcpy (d
.chars
, chars
, WCHAR_BUFLEN (d
.num_chars
));
2482 /* Determine if the current character is the same as this
2484 if (d
.num_chars
== current
->num_chars
&& d
.result
== current
->result
)
2486 /* There are two cases to consider:
2488 1) Equality of converted character (num_chars > 0)
2489 2) Equality of non-converted character (num_chars == 0) */
2490 if ((current
->num_chars
> 0
2491 && memcmp (current
->chars
, d
.chars
,
2492 WCHAR_BUFLEN (current
->num_chars
)) == 0)
2493 || (current
->num_chars
== 0
2494 && current
->buflen
== d
.buflen
2495 && memcmp (current
->buf
, d
.buf
, current
->buflen
) == 0))
2496 ++current
->repeat_count
;
2504 /* Push this next converted character onto the result vector. */
2505 repeat
= current
->repeat_count
;
2511 /* Print the characters in CHARS to the OBSTACK. QUOTE_CHAR is the quote
2512 character to use with string output. WIDTH is the size of the output
2513 character type. BYTE_ORDER is the target byte order. OPTIONS
2514 is the user's print options. */
2517 print_converted_chars_to_obstack (struct obstack
*obstack
,
2518 const std::vector
<converted_character
> &chars
,
2519 int quote_char
, int width
,
2520 enum bfd_endian byte_order
,
2521 const struct value_print_options
*options
)
2524 const converted_character
*elem
;
2525 enum {START
, SINGLE
, REPEAT
, INCOMPLETE
, FINISH
} state
, last
;
2526 gdb_wchar_t wide_quote_char
= gdb_btowc (quote_char
);
2527 int need_escape
= 0;
2529 /* Set the start state. */
2531 last
= state
= START
;
2539 /* Nothing to do. */
2546 /* We are outputting a single character
2547 (< options->repeat_count_threshold). */
2551 /* We were outputting some other type of content, so we
2552 must output and a comma and a quote. */
2554 obstack_grow_wstr (obstack
, LCST (", "));
2555 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2557 /* Output the character. */
2558 for (j
= 0; j
< elem
->repeat_count
; ++j
)
2560 if (elem
->result
== wchar_iterate_ok
)
2561 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2562 byte_order
, obstack
, quote_char
, &need_escape
);
2564 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2565 byte_order
, obstack
, quote_char
, &need_escape
);
2574 /* We are outputting a character with a repeat count
2575 greater than options->repeat_count_threshold. */
2579 /* We were outputting a single string. Terminate the
2581 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2584 obstack_grow_wstr (obstack
, LCST (", "));
2586 /* Output the character and repeat string. */
2587 obstack_grow_wstr (obstack
, LCST ("'"));
2588 if (elem
->result
== wchar_iterate_ok
)
2589 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2590 byte_order
, obstack
, quote_char
, &need_escape
);
2592 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2593 byte_order
, obstack
, quote_char
, &need_escape
);
2594 obstack_grow_wstr (obstack
, LCST ("'"));
2595 std::string s
= string_printf (_(" <repeats %u times>"),
2596 elem
->repeat_count
);
2597 for (j
= 0; s
[j
]; ++j
)
2599 gdb_wchar_t w
= gdb_btowc (s
[j
]);
2600 obstack_grow (obstack
, &w
, sizeof (gdb_wchar_t
));
2606 /* We are outputting an incomplete sequence. */
2609 /* If we were outputting a string of SINGLE characters,
2610 terminate the quote. */
2611 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2614 obstack_grow_wstr (obstack
, LCST (", "));
2616 /* Output the incomplete sequence string. */
2617 obstack_grow_wstr (obstack
, LCST ("<incomplete sequence "));
2618 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
, byte_order
,
2619 obstack
, 0, &need_escape
);
2620 obstack_grow_wstr (obstack
, LCST (">"));
2622 /* We do not attempt to outupt anything after this. */
2627 /* All done. If we were outputting a string of SINGLE
2628 characters, the string must be terminated. Otherwise,
2629 REPEAT and INCOMPLETE are always left properly terminated. */
2631 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2636 /* Get the next element and state. */
2638 if (state
!= FINISH
)
2640 elem
= &chars
[idx
++];
2641 switch (elem
->result
)
2643 case wchar_iterate_ok
:
2644 case wchar_iterate_invalid
:
2645 if (elem
->repeat_count
> options
->repeat_count_threshold
)
2651 case wchar_iterate_incomplete
:
2655 case wchar_iterate_eof
:
2663 /* Print the character string STRING, printing at most LENGTH
2664 characters. LENGTH is -1 if the string is nul terminated. TYPE is
2665 the type of each character. OPTIONS holds the printing options;
2666 printing stops early if the number hits print_max; repeat counts
2667 are printed as appropriate. Print ellipses at the end if we had to
2668 stop before printing LENGTH characters, or if FORCE_ELLIPSES.
2669 QUOTE_CHAR is the character to print at each end of the string. If
2670 C_STYLE_TERMINATOR is true, and the last character is 0, then it is
2674 generic_printstr (struct ui_file
*stream
, struct type
*type
,
2675 const gdb_byte
*string
, unsigned int length
,
2676 const char *encoding
, int force_ellipses
,
2677 int quote_char
, int c_style_terminator
,
2678 const struct value_print_options
*options
)
2680 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (type
));
2682 int width
= TYPE_LENGTH (type
);
2684 struct converted_character
*last
;
2688 unsigned long current_char
= 1;
2690 for (i
= 0; current_char
; ++i
)
2693 current_char
= extract_unsigned_integer (string
+ i
* width
,
2699 /* If the string was not truncated due to `set print elements', and
2700 the last byte of it is a null, we don't print that, in
2701 traditional C style. */
2702 if (c_style_terminator
2705 && (extract_unsigned_integer (string
+ (length
- 1) * width
,
2706 width
, byte_order
) == 0))
2711 fputs_filtered ("\"\"", stream
);
2715 /* Arrange to iterate over the characters, in wchar_t form. */
2716 wchar_iterator
iter (string
, length
* width
, encoding
, width
);
2717 std::vector
<converted_character
> converted_chars
;
2719 /* Convert characters until the string is over or the maximum
2720 number of printed characters has been reached. */
2722 while (i
< options
->print_max
)
2728 /* Grab the next character and repeat count. */
2729 r
= count_next_character (&iter
, &converted_chars
);
2731 /* If less than zero, the end of the input string was reached. */
2735 /* Otherwise, add the count to the total print count and get
2736 the next character. */
2740 /* Get the last element and determine if the entire string was
2742 last
= &converted_chars
.back ();
2743 finished
= (last
->result
== wchar_iterate_eof
);
2745 /* Ensure that CONVERTED_CHARS is terminated. */
2746 last
->result
= wchar_iterate_eof
;
2748 /* WCHAR_BUF is the obstack we use to represent the string in
2750 auto_obstack wchar_buf
;
2752 /* Print the output string to the obstack. */
2753 print_converted_chars_to_obstack (&wchar_buf
, converted_chars
, quote_char
,
2754 width
, byte_order
, options
);
2756 if (force_ellipses
|| !finished
)
2757 obstack_grow_wstr (&wchar_buf
, LCST ("..."));
2759 /* OUTPUT is where we collect `char's for printing. */
2760 auto_obstack output
;
2762 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2763 (gdb_byte
*) obstack_base (&wchar_buf
),
2764 obstack_object_size (&wchar_buf
),
2765 sizeof (gdb_wchar_t
), &output
, translit_char
);
2766 obstack_1grow (&output
, '\0');
2768 fputs_filtered ((const char *) obstack_base (&output
), stream
);
2771 /* Print a string from the inferior, starting at ADDR and printing up to LEN
2772 characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing
2773 stops at the first null byte, otherwise printing proceeds (including null
2774 bytes) until either print_max or LEN characters have been printed,
2775 whichever is smaller. ENCODING is the name of the string's
2776 encoding. It can be NULL, in which case the target encoding is
2780 val_print_string (struct type
*elttype
, const char *encoding
,
2781 CORE_ADDR addr
, int len
,
2782 struct ui_file
*stream
,
2783 const struct value_print_options
*options
)
2785 int force_ellipsis
= 0; /* Force ellipsis to be printed if nonzero. */
2786 int err
; /* Non-zero if we got a bad read. */
2787 int found_nul
; /* Non-zero if we found the nul char. */
2788 unsigned int fetchlimit
; /* Maximum number of chars to print. */
2790 gdb::unique_xmalloc_ptr
<gdb_byte
> buffer
; /* Dynamically growable fetch buffer. */
2791 struct gdbarch
*gdbarch
= get_type_arch (elttype
);
2792 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
2793 int width
= TYPE_LENGTH (elttype
);
2795 /* First we need to figure out the limit on the number of characters we are
2796 going to attempt to fetch and print. This is actually pretty simple. If
2797 LEN >= zero, then the limit is the minimum of LEN and print_max. If
2798 LEN is -1, then the limit is print_max. This is true regardless of
2799 whether print_max is zero, UINT_MAX (unlimited), or something in between,
2800 because finding the null byte (or available memory) is what actually
2801 limits the fetch. */
2803 fetchlimit
= (len
== -1 ? options
->print_max
: std::min ((unsigned) len
,
2804 options
->print_max
));
2806 err
= read_string (addr
, len
, width
, fetchlimit
, byte_order
,
2807 &buffer
, &bytes_read
);
2811 /* We now have either successfully filled the buffer to fetchlimit,
2812 or terminated early due to an error or finding a null char when
2815 /* Determine found_nul by looking at the last character read. */
2817 if (bytes_read
>= width
)
2818 found_nul
= extract_unsigned_integer (buffer
.get () + bytes_read
- width
,
2819 width
, byte_order
) == 0;
2820 if (len
== -1 && !found_nul
)
2824 /* We didn't find a NUL terminator we were looking for. Attempt
2825 to peek at the next character. If not successful, or it is not
2826 a null byte, then force ellipsis to be printed. */
2828 peekbuf
= (gdb_byte
*) alloca (width
);
2830 if (target_read_memory (addr
, peekbuf
, width
) == 0
2831 && extract_unsigned_integer (peekbuf
, width
, byte_order
) != 0)
2834 else if ((len
>= 0 && err
!= 0) || (len
> bytes_read
/ width
))
2836 /* Getting an error when we have a requested length, or fetching less
2837 than the number of characters actually requested, always make us
2842 /* If we get an error before fetching anything, don't print a string.
2843 But if we fetch something and then get an error, print the string
2844 and then the error message. */
2845 if (err
== 0 || bytes_read
> 0)
2847 LA_PRINT_STRING (stream
, elttype
, buffer
.get (), bytes_read
/ width
,
2848 encoding
, force_ellipsis
, options
);
2853 std::string str
= memory_error_message (TARGET_XFER_E_IO
, gdbarch
, addr
);
2855 fprintf_filtered (stream
, "<error: ");
2856 fputs_filtered (str
.c_str (), stream
);
2857 fprintf_filtered (stream
, ">");
2860 return (bytes_read
/ width
);
2864 /* The 'set input-radix' command writes to this auxiliary variable.
2865 If the requested radix is valid, INPUT_RADIX is updated; otherwise,
2866 it is left unchanged. */
2868 static unsigned input_radix_1
= 10;
2870 /* Validate an input or output radix setting, and make sure the user
2871 knows what they really did here. Radix setting is confusing, e.g.
2872 setting the input radix to "10" never changes it! */
2875 set_input_radix (const char *args
, int from_tty
, struct cmd_list_element
*c
)
2877 set_input_radix_1 (from_tty
, input_radix_1
);
2881 set_input_radix_1 (int from_tty
, unsigned radix
)
2883 /* We don't currently disallow any input radix except 0 or 1, which don't
2884 make any mathematical sense. In theory, we can deal with any input
2885 radix greater than 1, even if we don't have unique digits for every
2886 value from 0 to radix-1, but in practice we lose on large radix values.
2887 We should either fix the lossage or restrict the radix range more.
2892 input_radix_1
= input_radix
;
2893 error (_("Nonsense input radix ``decimal %u''; input radix unchanged."),
2896 input_radix_1
= input_radix
= radix
;
2899 printf_filtered (_("Input radix now set to "
2900 "decimal %u, hex %x, octal %o.\n"),
2901 radix
, radix
, radix
);
2905 /* The 'set output-radix' command writes to this auxiliary variable.
2906 If the requested radix is valid, OUTPUT_RADIX is updated,
2907 otherwise, it is left unchanged. */
2909 static unsigned output_radix_1
= 10;
2912 set_output_radix (const char *args
, int from_tty
, struct cmd_list_element
*c
)
2914 set_output_radix_1 (from_tty
, output_radix_1
);
2918 set_output_radix_1 (int from_tty
, unsigned radix
)
2920 /* Validate the radix and disallow ones that we aren't prepared to
2921 handle correctly, leaving the radix unchanged. */
2925 user_print_options
.output_format
= 'x'; /* hex */
2928 user_print_options
.output_format
= 0; /* decimal */
2931 user_print_options
.output_format
= 'o'; /* octal */
2934 output_radix_1
= output_radix
;
2935 error (_("Unsupported output radix ``decimal %u''; "
2936 "output radix unchanged."),
2939 output_radix_1
= output_radix
= radix
;
2942 printf_filtered (_("Output radix now set to "
2943 "decimal %u, hex %x, octal %o.\n"),
2944 radix
, radix
, radix
);
2948 /* Set both the input and output radix at once. Try to set the output radix
2949 first, since it has the most restrictive range. An radix that is valid as
2950 an output radix is also valid as an input radix.
2952 It may be useful to have an unusual input radix. If the user wishes to
2953 set an input radix that is not valid as an output radix, he needs to use
2954 the 'set input-radix' command. */
2957 set_radix (const char *arg
, int from_tty
)
2961 radix
= (arg
== NULL
) ? 10 : parse_and_eval_long (arg
);
2962 set_output_radix_1 (0, radix
);
2963 set_input_radix_1 (0, radix
);
2966 printf_filtered (_("Input and output radices now set to "
2967 "decimal %u, hex %x, octal %o.\n"),
2968 radix
, radix
, radix
);
2972 /* Show both the input and output radices. */
2975 show_radix (const char *arg
, int from_tty
)
2979 if (input_radix
== output_radix
)
2981 printf_filtered (_("Input and output radices set to "
2982 "decimal %u, hex %x, octal %o.\n"),
2983 input_radix
, input_radix
, input_radix
);
2987 printf_filtered (_("Input radix set to decimal "
2988 "%u, hex %x, octal %o.\n"),
2989 input_radix
, input_radix
, input_radix
);
2990 printf_filtered (_("Output radix set to decimal "
2991 "%u, hex %x, octal %o.\n"),
2992 output_radix
, output_radix
, output_radix
);
2999 set_print (const char *arg
, int from_tty
)
3002 "\"set print\" must be followed by the name of a print subcommand.\n");
3003 help_list (setprintlist
, "set print ", all_commands
, gdb_stdout
);
3007 show_print (const char *args
, int from_tty
)
3009 cmd_show_list (showprintlist
, from_tty
, "");
3013 set_print_raw (const char *arg
, int from_tty
)
3016 "\"set print raw\" must be followed by the name of a \"print raw\" subcommand.\n");
3017 help_list (setprintrawlist
, "set print raw ", all_commands
, gdb_stdout
);
3021 show_print_raw (const char *args
, int from_tty
)
3023 cmd_show_list (showprintrawlist
, from_tty
, "");
3028 _initialize_valprint (void)
3030 add_prefix_cmd ("print", no_class
, set_print
,
3031 _("Generic command for setting how things print."),
3032 &setprintlist
, "set print ", 0, &setlist
);
3033 add_alias_cmd ("p", "print", no_class
, 1, &setlist
);
3034 /* Prefer set print to set prompt. */
3035 add_alias_cmd ("pr", "print", no_class
, 1, &setlist
);
3037 add_prefix_cmd ("print", no_class
, show_print
,
3038 _("Generic command for showing print settings."),
3039 &showprintlist
, "show print ", 0, &showlist
);
3040 add_alias_cmd ("p", "print", no_class
, 1, &showlist
);
3041 add_alias_cmd ("pr", "print", no_class
, 1, &showlist
);
3043 add_prefix_cmd ("raw", no_class
, set_print_raw
,
3045 Generic command for setting what things to print in \"raw\" mode."),
3046 &setprintrawlist
, "set print raw ", 0, &setprintlist
);
3047 add_prefix_cmd ("raw", no_class
, show_print_raw
,
3048 _("Generic command for showing \"print raw\" settings."),
3049 &showprintrawlist
, "show print raw ", 0, &showprintlist
);
3051 add_setshow_uinteger_cmd ("elements", no_class
,
3052 &user_print_options
.print_max
, _("\
3053 Set limit on string chars or array elements to print."), _("\
3054 Show limit on string chars or array elements to print."), _("\
3055 \"set print elements unlimited\" causes there to be no limit."),
3058 &setprintlist
, &showprintlist
);
3060 add_setshow_boolean_cmd ("null-stop", no_class
,
3061 &user_print_options
.stop_print_at_null
, _("\
3062 Set printing of char arrays to stop at first null char."), _("\
3063 Show printing of char arrays to stop at first null char."), NULL
,
3065 show_stop_print_at_null
,
3066 &setprintlist
, &showprintlist
);
3068 add_setshow_uinteger_cmd ("repeats", no_class
,
3069 &user_print_options
.repeat_count_threshold
, _("\
3070 Set threshold for repeated print elements."), _("\
3071 Show threshold for repeated print elements."), _("\
3072 \"set print repeats unlimited\" causes all elements to be individually printed."),
3074 show_repeat_count_threshold
,
3075 &setprintlist
, &showprintlist
);
3077 add_setshow_boolean_cmd ("pretty", class_support
,
3078 &user_print_options
.prettyformat_structs
, _("\
3079 Set pretty formatting of structures."), _("\
3080 Show pretty formatting of structures."), NULL
,
3082 show_prettyformat_structs
,
3083 &setprintlist
, &showprintlist
);
3085 add_setshow_boolean_cmd ("union", class_support
,
3086 &user_print_options
.unionprint
, _("\
3087 Set printing of unions interior to structures."), _("\
3088 Show printing of unions interior to structures."), NULL
,
3091 &setprintlist
, &showprintlist
);
3093 add_setshow_boolean_cmd ("array", class_support
,
3094 &user_print_options
.prettyformat_arrays
, _("\
3095 Set pretty formatting of arrays."), _("\
3096 Show pretty formatting of arrays."), NULL
,
3098 show_prettyformat_arrays
,
3099 &setprintlist
, &showprintlist
);
3101 add_setshow_boolean_cmd ("address", class_support
,
3102 &user_print_options
.addressprint
, _("\
3103 Set printing of addresses."), _("\
3104 Show printing of addresses."), NULL
,
3107 &setprintlist
, &showprintlist
);
3109 add_setshow_boolean_cmd ("symbol", class_support
,
3110 &user_print_options
.symbol_print
, _("\
3111 Set printing of symbol names when printing pointers."), _("\
3112 Show printing of symbol names when printing pointers."),
3115 &setprintlist
, &showprintlist
);
3117 add_setshow_zuinteger_cmd ("input-radix", class_support
, &input_radix_1
,
3119 Set default input radix for entering numbers."), _("\
3120 Show default input radix for entering numbers."), NULL
,
3123 &setlist
, &showlist
);
3125 add_setshow_zuinteger_cmd ("output-radix", class_support
, &output_radix_1
,
3127 Set default output radix for printing of values."), _("\
3128 Show default output radix for printing of values."), NULL
,
3131 &setlist
, &showlist
);
3133 /* The "set radix" and "show radix" commands are special in that
3134 they are like normal set and show commands but allow two normally
3135 independent variables to be either set or shown with a single
3136 command. So the usual deprecated_add_set_cmd() and [deleted]
3137 add_show_from_set() commands aren't really appropriate. */
3138 /* FIXME: i18n: With the new add_setshow_integer command, that is no
3139 longer true - show can display anything. */
3140 add_cmd ("radix", class_support
, set_radix
, _("\
3141 Set default input and output number radices.\n\
3142 Use 'set input-radix' or 'set output-radix' to independently set each.\n\
3143 Without an argument, sets both radices back to the default value of 10."),
3145 add_cmd ("radix", class_support
, show_radix
, _("\
3146 Show the default input and output number radices.\n\
3147 Use 'show input-radix' or 'show output-radix' to independently show each."),
3150 add_setshow_boolean_cmd ("array-indexes", class_support
,
3151 &user_print_options
.print_array_indexes
, _("\
3152 Set printing of array indexes."), _("\
3153 Show printing of array indexes"), NULL
, NULL
, show_print_array_indexes
,
3154 &setprintlist
, &showprintlist
);