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 (except
, RETURN_MASK_ERROR
)
1065 fprintf_filtered (stream
, _("<error reading variable>"));
1070 /* Check whether the value VAL is printable. Return 1 if it is;
1071 return 0 and print an appropriate error message to STREAM according to
1072 OPTIONS if it is not. */
1075 value_check_printable (struct value
*val
, struct ui_file
*stream
,
1076 const struct value_print_options
*options
)
1080 fprintf_filtered (stream
, _("<address of value unknown>"));
1084 if (value_entirely_optimized_out (val
))
1086 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1087 fprintf_filtered (stream
, "...");
1089 val_print_optimized_out (val
, stream
);
1093 if (value_entirely_unavailable (val
))
1095 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1096 fprintf_filtered (stream
, "...");
1098 val_print_unavailable (stream
);
1102 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_INTERNAL_FUNCTION
)
1104 fprintf_filtered (stream
, _("<internal function %s>"),
1105 value_internal_function_name (val
));
1109 if (type_not_associated (value_type (val
)))
1111 val_print_not_associated (stream
);
1115 if (type_not_allocated (value_type (val
)))
1117 val_print_not_allocated (stream
);
1124 /* Print using the given LANGUAGE the value VAL onto stream STREAM according
1127 This is a preferable interface to val_print, above, because it uses
1128 GDB's value mechanism. */
1131 common_val_print (struct value
*val
, struct ui_file
*stream
, int recurse
,
1132 const struct value_print_options
*options
,
1133 const struct language_defn
*language
)
1135 if (!value_check_printable (val
, stream
, options
))
1138 if (language
->la_language
== language_ada
)
1139 /* The value might have a dynamic type, which would cause trouble
1140 below when trying to extract the value contents (since the value
1141 size is determined from the type size which is unknown). So
1142 get a fixed representation of our value. */
1143 val
= ada_to_fixed_value (val
);
1145 if (value_lazy (val
))
1146 value_fetch_lazy (val
);
1148 val_print (value_type (val
),
1149 value_embedded_offset (val
), value_address (val
),
1151 val
, options
, language
);
1154 /* Print on stream STREAM the value VAL according to OPTIONS. The value
1155 is printed using the current_language syntax. */
1158 value_print (struct value
*val
, struct ui_file
*stream
,
1159 const struct value_print_options
*options
)
1161 if (!value_check_printable (val
, stream
, options
))
1167 = apply_ext_lang_val_pretty_printer (value_type (val
),
1168 value_embedded_offset (val
),
1169 value_address (val
),
1171 val
, options
, current_language
);
1177 LA_VALUE_PRINT (val
, stream
, options
);
1181 val_print_type_code_flags (struct type
*type
, const gdb_byte
*valaddr
,
1182 struct ui_file
*stream
)
1184 ULONGEST val
= unpack_long (type
, valaddr
);
1185 int field
, nfields
= TYPE_NFIELDS (type
);
1186 struct gdbarch
*gdbarch
= get_type_arch (type
);
1187 struct type
*bool_type
= builtin_type (gdbarch
)->builtin_bool
;
1189 fputs_filtered ("[", stream
);
1190 for (field
= 0; field
< nfields
; field
++)
1192 if (TYPE_FIELD_NAME (type
, field
)[0] != '\0')
1194 struct type
*field_type
= TYPE_FIELD_TYPE (type
, field
);
1196 if (field_type
== bool_type
1197 /* We require boolean types here to be one bit wide. This is a
1198 problematic place to notify the user of an internal error
1199 though. Instead just fall through and print the field as an
1201 && TYPE_FIELD_BITSIZE (type
, field
) == 1)
1203 if (val
& ((ULONGEST
)1 << TYPE_FIELD_BITPOS (type
, field
)))
1204 fprintf_filtered (stream
, " %s",
1205 TYPE_FIELD_NAME (type
, field
));
1209 unsigned field_len
= TYPE_FIELD_BITSIZE (type
, field
);
1211 = val
>> (TYPE_FIELD_BITPOS (type
, field
) - field_len
+ 1);
1213 if (field_len
< sizeof (ULONGEST
) * TARGET_CHAR_BIT
)
1214 field_val
&= ((ULONGEST
) 1 << field_len
) - 1;
1215 fprintf_filtered (stream
, " %s=",
1216 TYPE_FIELD_NAME (type
, field
));
1217 if (TYPE_CODE (field_type
) == TYPE_CODE_ENUM
)
1218 generic_val_print_enum_1 (field_type
, field_val
, stream
);
1220 print_longest (stream
, 'd', 0, field_val
);
1224 fputs_filtered (" ]", stream
);
1227 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
1228 according to OPTIONS and SIZE on STREAM. Format i is not supported
1231 This is how the elements of an array or structure are printed
1235 val_print_scalar_formatted (struct type
*type
,
1236 LONGEST embedded_offset
,
1238 const struct value_print_options
*options
,
1240 struct ui_file
*stream
)
1242 struct gdbarch
*arch
= get_type_arch (type
);
1243 int unit_size
= gdbarch_addressable_memory_unit_size (arch
);
1245 gdb_assert (val
!= NULL
);
1247 /* If we get here with a string format, try again without it. Go
1248 all the way back to the language printers, which may call us
1250 if (options
->format
== 's')
1252 struct value_print_options opts
= *options
;
1255 val_print (type
, embedded_offset
, 0, stream
, 0, val
, &opts
,
1260 /* value_contents_for_printing fetches all VAL's contents. They are
1261 needed to check whether VAL is optimized-out or unavailable
1263 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
1265 /* A scalar object that does not have all bits available can't be
1266 printed, because all bits contribute to its representation. */
1267 if (value_bits_any_optimized_out (val
,
1268 TARGET_CHAR_BIT
* embedded_offset
,
1269 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
1270 val_print_optimized_out (val
, stream
);
1271 else if (!value_bytes_available (val
, embedded_offset
, TYPE_LENGTH (type
)))
1272 val_print_unavailable (stream
);
1274 print_scalar_formatted (valaddr
+ embedded_offset
* unit_size
, type
,
1275 options
, size
, stream
);
1278 /* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g.
1279 The raison d'etre of this function is to consolidate printing of
1280 LONG_LONG's into this one function. The format chars b,h,w,g are
1281 from print_scalar_formatted(). Numbers are printed using C
1284 USE_C_FORMAT means to use C format in all cases. Without it,
1285 'o' and 'x' format do not include the standard C radix prefix
1288 Hilfinger/2004-09-09: USE_C_FORMAT was originally called USE_LOCAL
1289 and was intended to request formating according to the current
1290 language and would be used for most integers that GDB prints. The
1291 exceptional cases were things like protocols where the format of
1292 the integer is a protocol thing, not a user-visible thing). The
1293 parameter remains to preserve the information of what things might
1294 be printed with language-specific format, should we ever resurrect
1298 print_longest (struct ui_file
*stream
, int format
, int use_c_format
,
1306 val
= int_string (val_long
, 10, 1, 0, 1); break;
1308 val
= int_string (val_long
, 10, 0, 0, 1); break;
1310 val
= int_string (val_long
, 16, 0, 0, use_c_format
); break;
1312 val
= int_string (val_long
, 16, 0, 2, 1); break;
1314 val
= int_string (val_long
, 16, 0, 4, 1); break;
1316 val
= int_string (val_long
, 16, 0, 8, 1); break;
1318 val
= int_string (val_long
, 16, 0, 16, 1); break;
1321 val
= int_string (val_long
, 8, 0, 0, use_c_format
); break;
1323 internal_error (__FILE__
, __LINE__
,
1324 _("failed internal consistency check"));
1326 fputs_filtered (val
, stream
);
1329 /* This used to be a macro, but I don't think it is called often enough
1330 to merit such treatment. */
1331 /* Convert a LONGEST to an int. This is used in contexts (e.g. number of
1332 arguments to a function, number in a value history, register number, etc.)
1333 where the value must not be larger than can fit in an int. */
1336 longest_to_int (LONGEST arg
)
1338 /* Let the compiler do the work. */
1339 int rtnval
= (int) arg
;
1341 /* Check for overflows or underflows. */
1342 if (sizeof (LONGEST
) > sizeof (int))
1346 error (_("Value out of range."));
1352 /* Print a floating point value of floating-point type TYPE,
1353 pointed to in GDB by VALADDR, on STREAM. */
1356 print_floating (const gdb_byte
*valaddr
, struct type
*type
,
1357 struct ui_file
*stream
)
1359 std::string str
= target_float_to_string (valaddr
, type
);
1360 fputs_filtered (str
.c_str (), stream
);
1364 print_binary_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1365 unsigned len
, enum bfd_endian byte_order
, bool zero_pad
)
1370 bool seen_a_one
= false;
1372 /* Declared "int" so it will be signed.
1373 This ensures that right shift will shift in zeros. */
1375 const int mask
= 0x080;
1377 if (byte_order
== BFD_ENDIAN_BIG
)
1383 /* Every byte has 8 binary characters; peel off
1384 and print from the MSB end. */
1386 for (i
= 0; i
< (HOST_CHAR_BIT
* sizeof (*p
)); i
++)
1388 if (*p
& (mask
>> i
))
1393 if (zero_pad
|| seen_a_one
|| b
== '1')
1394 fputc_filtered (b
, stream
);
1402 for (p
= valaddr
+ len
- 1;
1406 for (i
= 0; i
< (HOST_CHAR_BIT
* sizeof (*p
)); i
++)
1408 if (*p
& (mask
>> i
))
1413 if (zero_pad
|| seen_a_one
|| b
== '1')
1414 fputc_filtered (b
, stream
);
1421 /* When not zero-padding, ensure that something is printed when the
1423 if (!zero_pad
&& !seen_a_one
)
1424 fputc_filtered ('0', stream
);
1427 /* A helper for print_octal_chars that emits a single octal digit,
1428 optionally suppressing it if is zero and updating SEEN_A_ONE. */
1431 emit_octal_digit (struct ui_file
*stream
, bool *seen_a_one
, int digit
)
1433 if (*seen_a_one
|| digit
!= 0)
1434 fprintf_filtered (stream
, "%o", digit
);
1439 /* VALADDR points to an integer of LEN bytes.
1440 Print it in octal on stream or format it in buf. */
1443 print_octal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1444 unsigned len
, enum bfd_endian byte_order
)
1447 unsigned char octa1
, octa2
, octa3
, carry
;
1450 /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track
1451 * the extra bits, which cycle every three bytes:
1453 * Byte side: 0 1 2 3
1455 * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 |
1457 * Octal side: 0 1 carry 3 4 carry ...
1459 * Cycle number: 0 1 2
1461 * But of course we are printing from the high side, so we have to
1462 * figure out where in the cycle we are so that we end up with no
1463 * left over bits at the end.
1465 #define BITS_IN_OCTAL 3
1466 #define HIGH_ZERO 0340
1467 #define LOW_ZERO 0034
1468 #define CARRY_ZERO 0003
1469 static_assert (HIGH_ZERO
+ LOW_ZERO
+ CARRY_ZERO
== 0xff,
1470 "cycle zero constants are wrong");
1471 #define HIGH_ONE 0200
1472 #define MID_ONE 0160
1473 #define LOW_ONE 0016
1474 #define CARRY_ONE 0001
1475 static_assert (HIGH_ONE
+ MID_ONE
+ LOW_ONE
+ CARRY_ONE
== 0xff,
1476 "cycle one constants are wrong");
1477 #define HIGH_TWO 0300
1478 #define MID_TWO 0070
1479 #define LOW_TWO 0007
1480 static_assert (HIGH_TWO
+ MID_TWO
+ LOW_TWO
== 0xff,
1481 "cycle two constants are wrong");
1483 /* For 32 we start in cycle 2, with two bits and one bit carry;
1484 for 64 in cycle in cycle 1, with one bit and a two bit carry. */
1486 cycle
= (len
* HOST_CHAR_BIT
) % BITS_IN_OCTAL
;
1489 fputs_filtered ("0", stream
);
1490 bool seen_a_one
= false;
1491 if (byte_order
== BFD_ENDIAN_BIG
)
1500 /* No carry in, carry out two bits. */
1502 octa1
= (HIGH_ZERO
& *p
) >> 5;
1503 octa2
= (LOW_ZERO
& *p
) >> 2;
1504 carry
= (CARRY_ZERO
& *p
);
1505 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1506 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1510 /* Carry in two bits, carry out one bit. */
1512 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1513 octa2
= (MID_ONE
& *p
) >> 4;
1514 octa3
= (LOW_ONE
& *p
) >> 1;
1515 carry
= (CARRY_ONE
& *p
);
1516 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1517 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1518 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1522 /* Carry in one bit, no carry out. */
1524 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1525 octa2
= (MID_TWO
& *p
) >> 3;
1526 octa3
= (LOW_TWO
& *p
);
1528 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1529 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1530 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1534 error (_("Internal error in octal conversion;"));
1538 cycle
= cycle
% BITS_IN_OCTAL
;
1543 for (p
= valaddr
+ len
- 1;
1550 /* Carry out, no carry in */
1552 octa1
= (HIGH_ZERO
& *p
) >> 5;
1553 octa2
= (LOW_ZERO
& *p
) >> 2;
1554 carry
= (CARRY_ZERO
& *p
);
1555 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1556 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1560 /* Carry in, carry out */
1562 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1563 octa2
= (MID_ONE
& *p
) >> 4;
1564 octa3
= (LOW_ONE
& *p
) >> 1;
1565 carry
= (CARRY_ONE
& *p
);
1566 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1567 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1568 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1572 /* Carry in, no carry out */
1574 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1575 octa2
= (MID_TWO
& *p
) >> 3;
1576 octa3
= (LOW_TWO
& *p
);
1578 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1579 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1580 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1584 error (_("Internal error in octal conversion;"));
1588 cycle
= cycle
% BITS_IN_OCTAL
;
1594 /* Possibly negate the integer represented by BYTES. It contains LEN
1595 bytes in the specified byte order. If the integer is negative,
1596 copy it into OUT_VEC, negate it, and return true. Otherwise, do
1597 nothing and return false. */
1600 maybe_negate_by_bytes (const gdb_byte
*bytes
, unsigned len
,
1601 enum bfd_endian byte_order
,
1602 gdb::byte_vector
*out_vec
)
1605 gdb_assert (len
> 0);
1606 if (byte_order
== BFD_ENDIAN_BIG
)
1607 sign_byte
= bytes
[0];
1609 sign_byte
= bytes
[len
- 1];
1610 if ((sign_byte
& 0x80) == 0)
1613 out_vec
->resize (len
);
1615 /* Compute -x == 1 + ~x. */
1616 if (byte_order
== BFD_ENDIAN_LITTLE
)
1619 for (unsigned i
= 0; i
< len
; ++i
)
1621 unsigned tem
= (0xff & ~bytes
[i
]) + carry
;
1622 (*out_vec
)[i
] = tem
& 0xff;
1629 for (unsigned i
= len
; i
> 0; --i
)
1631 unsigned tem
= (0xff & ~bytes
[i
- 1]) + carry
;
1632 (*out_vec
)[i
- 1] = tem
& 0xff;
1640 /* VALADDR points to an integer of LEN bytes.
1641 Print it in decimal on stream or format it in buf. */
1644 print_decimal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1645 unsigned len
, bool is_signed
,
1646 enum bfd_endian byte_order
)
1649 #define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */
1650 #define CARRY_LEFT( x ) ((x) % TEN)
1651 #define SHIFT( x ) ((x) << 4)
1652 #define LOW_NIBBLE( x ) ( (x) & 0x00F)
1653 #define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4)
1658 int i
, j
, decimal_digits
;
1662 gdb::byte_vector negated_bytes
;
1664 && maybe_negate_by_bytes (valaddr
, len
, byte_order
, &negated_bytes
))
1666 fputs_filtered ("-", stream
);
1667 valaddr
= negated_bytes
.data ();
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 std::vector
<unsigned char> digits (decimal_len
, 0);
1676 /* Ok, we have an unknown number of bytes of data to be printed in
1679 * Given a hex number (in nibbles) as XYZ, we start by taking X and
1680 * decemalizing it as "x1 x2" in two decimal nibbles. Then we multiply
1681 * the nibbles by 16, add Y and re-decimalize. Repeat with Z.
1683 * The trick is that "digits" holds a base-10 number, but sometimes
1684 * the individual digits are > 10.
1686 * Outer loop is per nibble (hex digit) of input, from MSD end to
1689 decimal_digits
= 0; /* Number of decimal digits so far */
1690 p
= (byte_order
== BFD_ENDIAN_BIG
) ? valaddr
: valaddr
+ len
- 1;
1692 while ((byte_order
== BFD_ENDIAN_BIG
) ? (p
< valaddr
+ len
) : (p
>= valaddr
))
1695 * Multiply current base-ten number by 16 in place.
1696 * Each digit was between 0 and 9, now is between
1699 for (j
= 0; j
< decimal_digits
; j
++)
1701 digits
[j
] = SHIFT (digits
[j
]);
1704 /* Take the next nibble off the input and add it to what
1705 * we've got in the LSB position. Bottom 'digit' is now
1706 * between 0 and 159.
1708 * "flip" is used to run this loop twice for each byte.
1712 /* Take top nibble. */
1714 digits
[0] += HIGH_NIBBLE (*p
);
1719 /* Take low nibble and bump our pointer "p". */
1721 digits
[0] += LOW_NIBBLE (*p
);
1722 if (byte_order
== BFD_ENDIAN_BIG
)
1729 /* Re-decimalize. We have to do this often enough
1730 * that we don't overflow, but once per nibble is
1731 * overkill. Easier this way, though. Note that the
1732 * carry is often larger than 10 (e.g. max initial
1733 * carry out of lowest nibble is 15, could bubble all
1734 * the way up greater than 10). So we have to do
1735 * the carrying beyond the last current digit.
1738 for (j
= 0; j
< decimal_len
- 1; j
++)
1742 /* "/" won't handle an unsigned char with
1743 * a value that if signed would be negative.
1744 * So extend to longword int via "dummy".
1747 carry
= CARRY_OUT (dummy
);
1748 digits
[j
] = CARRY_LEFT (dummy
);
1750 if (j
>= decimal_digits
&& carry
== 0)
1753 * All higher digits are 0 and we
1754 * no longer have a carry.
1756 * Note: "j" is 0-based, "decimal_digits" is
1759 decimal_digits
= j
+ 1;
1765 /* Ok, now "digits" is the decimal representation, with
1766 the "decimal_digits" actual digits. Print! */
1768 for (i
= decimal_digits
- 1; i
> 0 && digits
[i
] == 0; --i
)
1773 fprintf_filtered (stream
, "%1d", digits
[i
]);
1777 /* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */
1780 print_hex_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1781 unsigned len
, enum bfd_endian byte_order
,
1786 fputs_filtered ("0x", stream
);
1787 if (byte_order
== BFD_ENDIAN_BIG
)
1793 /* Strip leading 0 bytes, but be sure to leave at least a
1794 single byte at the end. */
1795 for (; p
< valaddr
+ len
- 1 && !*p
; ++p
)
1799 const gdb_byte
*first
= p
;
1804 /* When not zero-padding, use a different format for the
1805 very first byte printed. */
1806 if (!zero_pad
&& p
== first
)
1807 fprintf_filtered (stream
, "%x", *p
);
1809 fprintf_filtered (stream
, "%02x", *p
);
1814 p
= valaddr
+ len
- 1;
1818 /* Strip leading 0 bytes, but be sure to leave at least a
1819 single byte at the end. */
1820 for (; p
>= valaddr
+ 1 && !*p
; --p
)
1824 const gdb_byte
*first
= p
;
1829 /* When not zero-padding, use a different format for the
1830 very first byte printed. */
1831 if (!zero_pad
&& p
== first
)
1832 fprintf_filtered (stream
, "%x", *p
);
1834 fprintf_filtered (stream
, "%02x", *p
);
1839 /* VALADDR points to a char integer of LEN bytes.
1840 Print it out in appropriate language form on stream.
1841 Omit any leading zero chars. */
1844 print_char_chars (struct ui_file
*stream
, struct type
*type
,
1845 const gdb_byte
*valaddr
,
1846 unsigned len
, enum bfd_endian byte_order
)
1850 if (byte_order
== BFD_ENDIAN_BIG
)
1853 while (p
< valaddr
+ len
- 1 && *p
== 0)
1856 while (p
< valaddr
+ len
)
1858 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
1864 p
= valaddr
+ len
- 1;
1865 while (p
> valaddr
&& *p
== 0)
1868 while (p
>= valaddr
)
1870 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
1876 /* Print function pointer with inferior address ADDRESS onto stdio
1880 print_function_pointer_address (const struct value_print_options
*options
,
1881 struct gdbarch
*gdbarch
,
1883 struct ui_file
*stream
)
1886 = gdbarch_convert_from_func_ptr_addr (gdbarch
, address
,
1887 current_top_target ());
1889 /* If the function pointer is represented by a description, print
1890 the address of the description. */
1891 if (options
->addressprint
&& func_addr
!= address
)
1893 fputs_filtered ("@", stream
);
1894 fputs_filtered (paddress (gdbarch
, address
), stream
);
1895 fputs_filtered (": ", stream
);
1897 print_address_demangle (options
, gdbarch
, func_addr
, stream
, demangle
);
1901 /* Print on STREAM using the given OPTIONS the index for the element
1902 at INDEX of an array whose index type is INDEX_TYPE. */
1905 maybe_print_array_index (struct type
*index_type
, LONGEST index
,
1906 struct ui_file
*stream
,
1907 const struct value_print_options
*options
)
1909 struct value
*index_value
;
1911 if (!options
->print_array_indexes
)
1914 index_value
= value_from_longest (index_type
, index
);
1916 LA_PRINT_ARRAY_INDEX (index_value
, stream
, options
);
1919 /* Called by various <lang>_val_print routines to print elements of an
1920 array in the form "<elem1>, <elem2>, <elem3>, ...".
1922 (FIXME?) Assumes array element separator is a comma, which is correct
1923 for all languages currently handled.
1924 (FIXME?) Some languages have a notation for repeated array elements,
1925 perhaps we should try to use that notation when appropriate. */
1928 val_print_array_elements (struct type
*type
,
1929 LONGEST embedded_offset
,
1930 CORE_ADDR address
, struct ui_file
*stream
,
1933 const struct value_print_options
*options
,
1936 unsigned int things_printed
= 0;
1938 struct type
*elttype
, *index_type
, *base_index_type
;
1940 /* Position of the array element we are examining to see
1941 whether it is repeated. */
1943 /* Number of repetitions we have detected so far. */
1945 LONGEST low_bound
, high_bound
;
1946 LONGEST low_pos
, high_pos
;
1948 elttype
= TYPE_TARGET_TYPE (type
);
1949 eltlen
= type_length_units (check_typedef (elttype
));
1950 index_type
= TYPE_INDEX_TYPE (type
);
1952 if (get_array_bounds (type
, &low_bound
, &high_bound
))
1954 if (TYPE_CODE (index_type
) == TYPE_CODE_RANGE
)
1955 base_index_type
= TYPE_TARGET_TYPE (index_type
);
1957 base_index_type
= index_type
;
1959 /* Non-contiguous enumerations types can by used as index types
1960 in some languages (e.g. Ada). In this case, the array length
1961 shall be computed from the positions of the first and last
1962 literal in the enumeration type, and not from the values
1963 of these literals. */
1964 if (!discrete_position (base_index_type
, low_bound
, &low_pos
)
1965 || !discrete_position (base_index_type
, high_bound
, &high_pos
))
1967 warning (_("unable to get positions in array, use bounds instead"));
1968 low_pos
= low_bound
;
1969 high_pos
= high_bound
;
1972 /* The array length should normally be HIGH_POS - LOW_POS + 1.
1973 But we have to be a little extra careful, because some languages
1974 such as Ada allow LOW_POS to be greater than HIGH_POS for
1975 empty arrays. In that situation, the array length is just zero,
1977 if (low_pos
> high_pos
)
1980 len
= high_pos
- low_pos
+ 1;
1984 warning (_("unable to get bounds of array, assuming null array"));
1989 annotate_array_section_begin (i
, elttype
);
1991 for (; i
< len
&& things_printed
< options
->print_max
; i
++)
1995 if (options
->prettyformat_arrays
)
1997 fprintf_filtered (stream
, ",\n");
1998 print_spaces_filtered (2 + 2 * recurse
, stream
);
2002 fprintf_filtered (stream
, ", ");
2005 wrap_here (n_spaces (2 + 2 * recurse
));
2006 maybe_print_array_index (index_type
, i
+ low_bound
,
2011 /* Only check for reps if repeat_count_threshold is not set to
2012 UINT_MAX (unlimited). */
2013 if (options
->repeat_count_threshold
< UINT_MAX
)
2016 && value_contents_eq (val
,
2017 embedded_offset
+ i
* eltlen
,
2028 if (reps
> options
->repeat_count_threshold
)
2030 val_print (elttype
, embedded_offset
+ i
* eltlen
,
2031 address
, stream
, recurse
+ 1, val
, options
,
2033 annotate_elt_rep (reps
);
2034 fprintf_filtered (stream
, " <repeats %u times>", reps
);
2035 annotate_elt_rep_end ();
2038 things_printed
+= options
->repeat_count_threshold
;
2042 val_print (elttype
, embedded_offset
+ i
* eltlen
,
2044 stream
, recurse
+ 1, val
, options
, current_language
);
2049 annotate_array_section_end ();
2052 fprintf_filtered (stream
, "...");
2056 /* Read LEN bytes of target memory at address MEMADDR, placing the
2057 results in GDB's memory at MYADDR. Returns a count of the bytes
2058 actually read, and optionally a target_xfer_status value in the
2059 location pointed to by ERRPTR if ERRPTR is non-null. */
2061 /* FIXME: cagney/1999-10-14: Only used by val_print_string. Can this
2062 function be eliminated. */
2065 partial_memory_read (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
2066 int len
, int *errptr
)
2068 int nread
; /* Number of bytes actually read. */
2069 int errcode
; /* Error from last read. */
2071 /* First try a complete read. */
2072 errcode
= target_read_memory (memaddr
, myaddr
, len
);
2080 /* Loop, reading one byte at a time until we get as much as we can. */
2081 for (errcode
= 0, nread
= 0; len
> 0 && errcode
== 0; nread
++, len
--)
2083 errcode
= target_read_memory (memaddr
++, myaddr
++, 1);
2085 /* If an error, the last read was unsuccessful, so adjust count. */
2098 /* Read a string from the inferior, at ADDR, with LEN characters of
2099 WIDTH bytes each. Fetch at most FETCHLIMIT characters. BUFFER
2100 will be set to a newly allocated buffer containing the string, and
2101 BYTES_READ will be set to the number of bytes read. Returns 0 on
2102 success, or a target_xfer_status on failure.
2104 If LEN > 0, reads the lesser of LEN or FETCHLIMIT characters
2105 (including eventual NULs in the middle or end of the string).
2107 If LEN is -1, stops at the first null character (not necessarily
2108 the first null byte) up to a maximum of FETCHLIMIT characters. Set
2109 FETCHLIMIT to UINT_MAX to read as many characters as possible from
2112 Unless an exception is thrown, BUFFER will always be allocated, even on
2113 failure. In this case, some characters might have been read before the
2114 failure happened. Check BYTES_READ to recognize this situation.
2116 Note: There was a FIXME asking to make this code use target_read_string,
2117 but this function is more general (can read past null characters, up to
2118 given LEN). Besides, it is used much more often than target_read_string
2119 so it is more tested. Perhaps callers of target_read_string should use
2120 this function instead? */
2123 read_string (CORE_ADDR addr
, int len
, int width
, unsigned int fetchlimit
,
2124 enum bfd_endian byte_order
, gdb::unique_xmalloc_ptr
<gdb_byte
> *buffer
,
2127 int errcode
; /* Errno returned from bad reads. */
2128 unsigned int nfetch
; /* Chars to fetch / chars fetched. */
2129 gdb_byte
*bufptr
; /* Pointer to next available byte in
2132 /* Loop until we either have all the characters, or we encounter
2133 some error, such as bumping into the end of the address space. */
2135 buffer
->reset (nullptr);
2139 /* We want fetchlimit chars, so we might as well read them all in
2141 unsigned int fetchlen
= std::min ((unsigned) len
, fetchlimit
);
2143 buffer
->reset ((gdb_byte
*) xmalloc (fetchlen
* width
));
2144 bufptr
= buffer
->get ();
2146 nfetch
= partial_memory_read (addr
, bufptr
, fetchlen
* width
, &errcode
)
2148 addr
+= nfetch
* width
;
2149 bufptr
+= nfetch
* width
;
2153 unsigned long bufsize
= 0;
2154 unsigned int chunksize
; /* Size of each fetch, in chars. */
2155 int found_nul
; /* Non-zero if we found the nul char. */
2156 gdb_byte
*limit
; /* First location past end of fetch buffer. */
2159 /* We are looking for a NUL terminator to end the fetching, so we
2160 might as well read in blocks that are large enough to be efficient,
2161 but not so large as to be slow if fetchlimit happens to be large.
2162 So we choose the minimum of 8 and fetchlimit. We used to use 200
2163 instead of 8 but 200 is way too big for remote debugging over a
2165 chunksize
= std::min (8u, fetchlimit
);
2170 nfetch
= std::min ((unsigned long) chunksize
, fetchlimit
- bufsize
);
2172 if (*buffer
== NULL
)
2173 buffer
->reset ((gdb_byte
*) xmalloc (nfetch
* width
));
2175 buffer
->reset ((gdb_byte
*) xrealloc (buffer
->release (),
2176 (nfetch
+ bufsize
) * width
));
2178 bufptr
= buffer
->get () + bufsize
* width
;
2181 /* Read as much as we can. */
2182 nfetch
= partial_memory_read (addr
, bufptr
, nfetch
* width
, &errcode
)
2185 /* Scan this chunk for the null character that terminates the string
2186 to print. If found, we don't need to fetch any more. Note
2187 that bufptr is explicitly left pointing at the next character
2188 after the null character, or at the next character after the end
2191 limit
= bufptr
+ nfetch
* width
;
2192 while (bufptr
< limit
)
2196 c
= extract_unsigned_integer (bufptr
, width
, byte_order
);
2201 /* We don't care about any error which happened after
2202 the NUL terminator. */
2209 while (errcode
== 0 /* no error */
2210 && bufptr
- buffer
->get () < fetchlimit
* width
/* no overrun */
2211 && !found_nul
); /* haven't found NUL yet */
2214 { /* Length of string is really 0! */
2215 /* We always allocate *buffer. */
2216 buffer
->reset ((gdb_byte
*) xmalloc (1));
2217 bufptr
= buffer
->get ();
2221 /* bufptr and addr now point immediately beyond the last byte which we
2222 consider part of the string (including a '\0' which ends the string). */
2223 *bytes_read
= bufptr
- buffer
->get ();
2230 /* Return true if print_wchar can display W without resorting to a
2231 numeric escape, false otherwise. */
2234 wchar_printable (gdb_wchar_t w
)
2236 return (gdb_iswprint (w
)
2237 || w
== LCST ('\a') || w
== LCST ('\b')
2238 || w
== LCST ('\f') || w
== LCST ('\n')
2239 || w
== LCST ('\r') || w
== LCST ('\t')
2240 || w
== LCST ('\v'));
2243 /* A helper function that converts the contents of STRING to wide
2244 characters and then appends them to OUTPUT. */
2247 append_string_as_wide (const char *string
,
2248 struct obstack
*output
)
2250 for (; *string
; ++string
)
2252 gdb_wchar_t w
= gdb_btowc (*string
);
2253 obstack_grow (output
, &w
, sizeof (gdb_wchar_t
));
2257 /* Print a wide character W to OUTPUT. ORIG is a pointer to the
2258 original (target) bytes representing the character, ORIG_LEN is the
2259 number of valid bytes. WIDTH is the number of bytes in a base
2260 characters of the type. OUTPUT is an obstack to which wide
2261 characters are emitted. QUOTER is a (narrow) character indicating
2262 the style of quotes surrounding the character to be printed.
2263 NEED_ESCAPE is an in/out flag which is used to track numeric
2264 escapes across calls. */
2267 print_wchar (gdb_wint_t w
, const gdb_byte
*orig
,
2268 int orig_len
, int width
,
2269 enum bfd_endian byte_order
,
2270 struct obstack
*output
,
2271 int quoter
, int *need_escapep
)
2273 int need_escape
= *need_escapep
;
2277 /* iswprint implementation on Windows returns 1 for tab character.
2278 In order to avoid different printout on this host, we explicitly
2279 use wchar_printable function. */
2283 obstack_grow_wstr (output
, LCST ("\\a"));
2286 obstack_grow_wstr (output
, LCST ("\\b"));
2289 obstack_grow_wstr (output
, LCST ("\\f"));
2292 obstack_grow_wstr (output
, LCST ("\\n"));
2295 obstack_grow_wstr (output
, LCST ("\\r"));
2298 obstack_grow_wstr (output
, LCST ("\\t"));
2301 obstack_grow_wstr (output
, LCST ("\\v"));
2305 if (wchar_printable (w
) && (!need_escape
|| (!gdb_iswdigit (w
)
2307 && w
!= LCST ('9'))))
2309 gdb_wchar_t wchar
= w
;
2311 if (w
== gdb_btowc (quoter
) || w
== LCST ('\\'))
2312 obstack_grow_wstr (output
, LCST ("\\"));
2313 obstack_grow (output
, &wchar
, sizeof (gdb_wchar_t
));
2319 for (i
= 0; i
+ width
<= orig_len
; i
+= width
)
2324 value
= extract_unsigned_integer (&orig
[i
], width
,
2326 /* If the value fits in 3 octal digits, print it that
2327 way. Otherwise, print it as a hex escape. */
2329 xsnprintf (octal
, sizeof (octal
), "\\%.3o",
2330 (int) (value
& 0777));
2332 xsnprintf (octal
, sizeof (octal
), "\\x%lx", (long) value
);
2333 append_string_as_wide (octal
, output
);
2335 /* If we somehow have extra bytes, print them now. */
2336 while (i
< orig_len
)
2340 xsnprintf (octal
, sizeof (octal
), "\\%.3o", orig
[i
] & 0xff);
2341 append_string_as_wide (octal
, output
);
2352 /* Print the character C on STREAM as part of the contents of a
2353 literal string whose delimiter is QUOTER. ENCODING names the
2357 generic_emit_char (int c
, struct type
*type
, struct ui_file
*stream
,
2358 int quoter
, const char *encoding
)
2360 enum bfd_endian byte_order
2361 = gdbarch_byte_order (get_type_arch (type
));
2363 int need_escape
= 0;
2365 c_buf
= (gdb_byte
*) alloca (TYPE_LENGTH (type
));
2366 pack_long (c_buf
, type
, c
);
2368 wchar_iterator
iter (c_buf
, TYPE_LENGTH (type
), encoding
, TYPE_LENGTH (type
));
2370 /* This holds the printable form of the wchar_t data. */
2371 auto_obstack wchar_buf
;
2377 const gdb_byte
*buf
;
2379 int print_escape
= 1;
2380 enum wchar_iterate_result result
;
2382 num_chars
= iter
.iterate (&result
, &chars
, &buf
, &buflen
);
2387 /* If all characters are printable, print them. Otherwise,
2388 we're going to have to print an escape sequence. We
2389 check all characters because we want to print the target
2390 bytes in the escape sequence, and we don't know character
2391 boundaries there. */
2395 for (i
= 0; i
< num_chars
; ++i
)
2396 if (!wchar_printable (chars
[i
]))
2404 for (i
= 0; i
< num_chars
; ++i
)
2405 print_wchar (chars
[i
], buf
, buflen
,
2406 TYPE_LENGTH (type
), byte_order
,
2407 &wchar_buf
, quoter
, &need_escape
);
2411 /* This handles the NUM_CHARS == 0 case as well. */
2413 print_wchar (gdb_WEOF
, buf
, buflen
, TYPE_LENGTH (type
),
2414 byte_order
, &wchar_buf
, quoter
, &need_escape
);
2417 /* The output in the host encoding. */
2418 auto_obstack output
;
2420 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2421 (gdb_byte
*) obstack_base (&wchar_buf
),
2422 obstack_object_size (&wchar_buf
),
2423 sizeof (gdb_wchar_t
), &output
, translit_char
);
2424 obstack_1grow (&output
, '\0');
2426 fputs_filtered ((const char *) obstack_base (&output
), stream
);
2429 /* Return the repeat count of the next character/byte in ITER,
2430 storing the result in VEC. */
2433 count_next_character (wchar_iterator
*iter
,
2434 std::vector
<converted_character
> *vec
)
2436 struct converted_character
*current
;
2440 struct converted_character tmp
;
2444 = iter
->iterate (&tmp
.result
, &chars
, &tmp
.buf
, &tmp
.buflen
);
2445 if (tmp
.num_chars
> 0)
2447 gdb_assert (tmp
.num_chars
< MAX_WCHARS
);
2448 memcpy (tmp
.chars
, chars
, tmp
.num_chars
* sizeof (gdb_wchar_t
));
2450 vec
->push_back (tmp
);
2453 current
= &vec
->back ();
2455 /* Count repeated characters or bytes. */
2456 current
->repeat_count
= 1;
2457 if (current
->num_chars
== -1)
2465 struct converted_character d
;
2472 /* Get the next character. */
2473 d
.num_chars
= iter
->iterate (&d
.result
, &chars
, &d
.buf
, &d
.buflen
);
2475 /* If a character was successfully converted, save the character
2476 into the converted character. */
2477 if (d
.num_chars
> 0)
2479 gdb_assert (d
.num_chars
< MAX_WCHARS
);
2480 memcpy (d
.chars
, chars
, WCHAR_BUFLEN (d
.num_chars
));
2483 /* Determine if the current character is the same as this
2485 if (d
.num_chars
== current
->num_chars
&& d
.result
== current
->result
)
2487 /* There are two cases to consider:
2489 1) Equality of converted character (num_chars > 0)
2490 2) Equality of non-converted character (num_chars == 0) */
2491 if ((current
->num_chars
> 0
2492 && memcmp (current
->chars
, d
.chars
,
2493 WCHAR_BUFLEN (current
->num_chars
)) == 0)
2494 || (current
->num_chars
== 0
2495 && current
->buflen
== d
.buflen
2496 && memcmp (current
->buf
, d
.buf
, current
->buflen
) == 0))
2497 ++current
->repeat_count
;
2505 /* Push this next converted character onto the result vector. */
2506 repeat
= current
->repeat_count
;
2512 /* Print the characters in CHARS to the OBSTACK. QUOTE_CHAR is the quote
2513 character to use with string output. WIDTH is the size of the output
2514 character type. BYTE_ORDER is the target byte order. OPTIONS
2515 is the user's print options. */
2518 print_converted_chars_to_obstack (struct obstack
*obstack
,
2519 const std::vector
<converted_character
> &chars
,
2520 int quote_char
, int width
,
2521 enum bfd_endian byte_order
,
2522 const struct value_print_options
*options
)
2525 const converted_character
*elem
;
2526 enum {START
, SINGLE
, REPEAT
, INCOMPLETE
, FINISH
} state
, last
;
2527 gdb_wchar_t wide_quote_char
= gdb_btowc (quote_char
);
2528 int need_escape
= 0;
2530 /* Set the start state. */
2532 last
= state
= START
;
2540 /* Nothing to do. */
2547 /* We are outputting a single character
2548 (< options->repeat_count_threshold). */
2552 /* We were outputting some other type of content, so we
2553 must output and a comma and a quote. */
2555 obstack_grow_wstr (obstack
, LCST (", "));
2556 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2558 /* Output the character. */
2559 for (j
= 0; j
< elem
->repeat_count
; ++j
)
2561 if (elem
->result
== wchar_iterate_ok
)
2562 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2563 byte_order
, obstack
, quote_char
, &need_escape
);
2565 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2566 byte_order
, obstack
, quote_char
, &need_escape
);
2575 /* We are outputting a character with a repeat count
2576 greater than options->repeat_count_threshold. */
2580 /* We were outputting a single string. Terminate the
2582 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2585 obstack_grow_wstr (obstack
, LCST (", "));
2587 /* Output the character and repeat string. */
2588 obstack_grow_wstr (obstack
, LCST ("'"));
2589 if (elem
->result
== wchar_iterate_ok
)
2590 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2591 byte_order
, obstack
, quote_char
, &need_escape
);
2593 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2594 byte_order
, obstack
, quote_char
, &need_escape
);
2595 obstack_grow_wstr (obstack
, LCST ("'"));
2596 std::string s
= string_printf (_(" <repeats %u times>"),
2597 elem
->repeat_count
);
2598 for (j
= 0; s
[j
]; ++j
)
2600 gdb_wchar_t w
= gdb_btowc (s
[j
]);
2601 obstack_grow (obstack
, &w
, sizeof (gdb_wchar_t
));
2607 /* We are outputting an incomplete sequence. */
2610 /* If we were outputting a string of SINGLE characters,
2611 terminate the quote. */
2612 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2615 obstack_grow_wstr (obstack
, LCST (", "));
2617 /* Output the incomplete sequence string. */
2618 obstack_grow_wstr (obstack
, LCST ("<incomplete sequence "));
2619 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
, byte_order
,
2620 obstack
, 0, &need_escape
);
2621 obstack_grow_wstr (obstack
, LCST (">"));
2623 /* We do not attempt to outupt anything after this. */
2628 /* All done. If we were outputting a string of SINGLE
2629 characters, the string must be terminated. Otherwise,
2630 REPEAT and INCOMPLETE are always left properly terminated. */
2632 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2637 /* Get the next element and state. */
2639 if (state
!= FINISH
)
2641 elem
= &chars
[idx
++];
2642 switch (elem
->result
)
2644 case wchar_iterate_ok
:
2645 case wchar_iterate_invalid
:
2646 if (elem
->repeat_count
> options
->repeat_count_threshold
)
2652 case wchar_iterate_incomplete
:
2656 case wchar_iterate_eof
:
2664 /* Print the character string STRING, printing at most LENGTH
2665 characters. LENGTH is -1 if the string is nul terminated. TYPE is
2666 the type of each character. OPTIONS holds the printing options;
2667 printing stops early if the number hits print_max; repeat counts
2668 are printed as appropriate. Print ellipses at the end if we had to
2669 stop before printing LENGTH characters, or if FORCE_ELLIPSES.
2670 QUOTE_CHAR is the character to print at each end of the string. If
2671 C_STYLE_TERMINATOR is true, and the last character is 0, then it is
2675 generic_printstr (struct ui_file
*stream
, struct type
*type
,
2676 const gdb_byte
*string
, unsigned int length
,
2677 const char *encoding
, int force_ellipses
,
2678 int quote_char
, int c_style_terminator
,
2679 const struct value_print_options
*options
)
2681 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (type
));
2683 int width
= TYPE_LENGTH (type
);
2685 struct converted_character
*last
;
2689 unsigned long current_char
= 1;
2691 for (i
= 0; current_char
; ++i
)
2694 current_char
= extract_unsigned_integer (string
+ i
* width
,
2700 /* If the string was not truncated due to `set print elements', and
2701 the last byte of it is a null, we don't print that, in
2702 traditional C style. */
2703 if (c_style_terminator
2706 && (extract_unsigned_integer (string
+ (length
- 1) * width
,
2707 width
, byte_order
) == 0))
2712 fputs_filtered ("\"\"", stream
);
2716 /* Arrange to iterate over the characters, in wchar_t form. */
2717 wchar_iterator
iter (string
, length
* width
, encoding
, width
);
2718 std::vector
<converted_character
> converted_chars
;
2720 /* Convert characters until the string is over or the maximum
2721 number of printed characters has been reached. */
2723 while (i
< options
->print_max
)
2729 /* Grab the next character and repeat count. */
2730 r
= count_next_character (&iter
, &converted_chars
);
2732 /* If less than zero, the end of the input string was reached. */
2736 /* Otherwise, add the count to the total print count and get
2737 the next character. */
2741 /* Get the last element and determine if the entire string was
2743 last
= &converted_chars
.back ();
2744 finished
= (last
->result
== wchar_iterate_eof
);
2746 /* Ensure that CONVERTED_CHARS is terminated. */
2747 last
->result
= wchar_iterate_eof
;
2749 /* WCHAR_BUF is the obstack we use to represent the string in
2751 auto_obstack wchar_buf
;
2753 /* Print the output string to the obstack. */
2754 print_converted_chars_to_obstack (&wchar_buf
, converted_chars
, quote_char
,
2755 width
, byte_order
, options
);
2757 if (force_ellipses
|| !finished
)
2758 obstack_grow_wstr (&wchar_buf
, LCST ("..."));
2760 /* OUTPUT is where we collect `char's for printing. */
2761 auto_obstack output
;
2763 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2764 (gdb_byte
*) obstack_base (&wchar_buf
),
2765 obstack_object_size (&wchar_buf
),
2766 sizeof (gdb_wchar_t
), &output
, translit_char
);
2767 obstack_1grow (&output
, '\0');
2769 fputs_filtered ((const char *) obstack_base (&output
), stream
);
2772 /* Print a string from the inferior, starting at ADDR and printing up to LEN
2773 characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing
2774 stops at the first null byte, otherwise printing proceeds (including null
2775 bytes) until either print_max or LEN characters have been printed,
2776 whichever is smaller. ENCODING is the name of the string's
2777 encoding. It can be NULL, in which case the target encoding is
2781 val_print_string (struct type
*elttype
, const char *encoding
,
2782 CORE_ADDR addr
, int len
,
2783 struct ui_file
*stream
,
2784 const struct value_print_options
*options
)
2786 int force_ellipsis
= 0; /* Force ellipsis to be printed if nonzero. */
2787 int err
; /* Non-zero if we got a bad read. */
2788 int found_nul
; /* Non-zero if we found the nul char. */
2789 unsigned int fetchlimit
; /* Maximum number of chars to print. */
2791 gdb::unique_xmalloc_ptr
<gdb_byte
> buffer
; /* Dynamically growable fetch buffer. */
2792 struct gdbarch
*gdbarch
= get_type_arch (elttype
);
2793 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
2794 int width
= TYPE_LENGTH (elttype
);
2796 /* First we need to figure out the limit on the number of characters we are
2797 going to attempt to fetch and print. This is actually pretty simple. If
2798 LEN >= zero, then the limit is the minimum of LEN and print_max. If
2799 LEN is -1, then the limit is print_max. This is true regardless of
2800 whether print_max is zero, UINT_MAX (unlimited), or something in between,
2801 because finding the null byte (or available memory) is what actually
2802 limits the fetch. */
2804 fetchlimit
= (len
== -1 ? options
->print_max
: std::min ((unsigned) len
,
2805 options
->print_max
));
2807 err
= read_string (addr
, len
, width
, fetchlimit
, byte_order
,
2808 &buffer
, &bytes_read
);
2812 /* We now have either successfully filled the buffer to fetchlimit,
2813 or terminated early due to an error or finding a null char when
2816 /* Determine found_nul by looking at the last character read. */
2818 if (bytes_read
>= width
)
2819 found_nul
= extract_unsigned_integer (buffer
.get () + bytes_read
- width
,
2820 width
, byte_order
) == 0;
2821 if (len
== -1 && !found_nul
)
2825 /* We didn't find a NUL terminator we were looking for. Attempt
2826 to peek at the next character. If not successful, or it is not
2827 a null byte, then force ellipsis to be printed. */
2829 peekbuf
= (gdb_byte
*) alloca (width
);
2831 if (target_read_memory (addr
, peekbuf
, width
) == 0
2832 && extract_unsigned_integer (peekbuf
, width
, byte_order
) != 0)
2835 else if ((len
>= 0 && err
!= 0) || (len
> bytes_read
/ width
))
2837 /* Getting an error when we have a requested length, or fetching less
2838 than the number of characters actually requested, always make us
2843 /* If we get an error before fetching anything, don't print a string.
2844 But if we fetch something and then get an error, print the string
2845 and then the error message. */
2846 if (err
== 0 || bytes_read
> 0)
2848 LA_PRINT_STRING (stream
, elttype
, buffer
.get (), bytes_read
/ width
,
2849 encoding
, force_ellipsis
, options
);
2854 std::string str
= memory_error_message (TARGET_XFER_E_IO
, gdbarch
, addr
);
2856 fprintf_filtered (stream
, "<error: ");
2857 fputs_filtered (str
.c_str (), stream
);
2858 fprintf_filtered (stream
, ">");
2861 return (bytes_read
/ width
);
2865 /* The 'set input-radix' command writes to this auxiliary variable.
2866 If the requested radix is valid, INPUT_RADIX is updated; otherwise,
2867 it is left unchanged. */
2869 static unsigned input_radix_1
= 10;
2871 /* Validate an input or output radix setting, and make sure the user
2872 knows what they really did here. Radix setting is confusing, e.g.
2873 setting the input radix to "10" never changes it! */
2876 set_input_radix (const char *args
, int from_tty
, struct cmd_list_element
*c
)
2878 set_input_radix_1 (from_tty
, input_radix_1
);
2882 set_input_radix_1 (int from_tty
, unsigned radix
)
2884 /* We don't currently disallow any input radix except 0 or 1, which don't
2885 make any mathematical sense. In theory, we can deal with any input
2886 radix greater than 1, even if we don't have unique digits for every
2887 value from 0 to radix-1, but in practice we lose on large radix values.
2888 We should either fix the lossage or restrict the radix range more.
2893 input_radix_1
= input_radix
;
2894 error (_("Nonsense input radix ``decimal %u''; input radix unchanged."),
2897 input_radix_1
= input_radix
= radix
;
2900 printf_filtered (_("Input radix now set to "
2901 "decimal %u, hex %x, octal %o.\n"),
2902 radix
, radix
, radix
);
2906 /* The 'set output-radix' command writes to this auxiliary variable.
2907 If the requested radix is valid, OUTPUT_RADIX is updated,
2908 otherwise, it is left unchanged. */
2910 static unsigned output_radix_1
= 10;
2913 set_output_radix (const char *args
, int from_tty
, struct cmd_list_element
*c
)
2915 set_output_radix_1 (from_tty
, output_radix_1
);
2919 set_output_radix_1 (int from_tty
, unsigned radix
)
2921 /* Validate the radix and disallow ones that we aren't prepared to
2922 handle correctly, leaving the radix unchanged. */
2926 user_print_options
.output_format
= 'x'; /* hex */
2929 user_print_options
.output_format
= 0; /* decimal */
2932 user_print_options
.output_format
= 'o'; /* octal */
2935 output_radix_1
= output_radix
;
2936 error (_("Unsupported output radix ``decimal %u''; "
2937 "output radix unchanged."),
2940 output_radix_1
= output_radix
= radix
;
2943 printf_filtered (_("Output radix now set to "
2944 "decimal %u, hex %x, octal %o.\n"),
2945 radix
, radix
, radix
);
2949 /* Set both the input and output radix at once. Try to set the output radix
2950 first, since it has the most restrictive range. An radix that is valid as
2951 an output radix is also valid as an input radix.
2953 It may be useful to have an unusual input radix. If the user wishes to
2954 set an input radix that is not valid as an output radix, he needs to use
2955 the 'set input-radix' command. */
2958 set_radix (const char *arg
, int from_tty
)
2962 radix
= (arg
== NULL
) ? 10 : parse_and_eval_long (arg
);
2963 set_output_radix_1 (0, radix
);
2964 set_input_radix_1 (0, radix
);
2967 printf_filtered (_("Input and output radices now set to "
2968 "decimal %u, hex %x, octal %o.\n"),
2969 radix
, radix
, radix
);
2973 /* Show both the input and output radices. */
2976 show_radix (const char *arg
, int from_tty
)
2980 if (input_radix
== output_radix
)
2982 printf_filtered (_("Input and output radices set to "
2983 "decimal %u, hex %x, octal %o.\n"),
2984 input_radix
, input_radix
, input_radix
);
2988 printf_filtered (_("Input radix set to decimal "
2989 "%u, hex %x, octal %o.\n"),
2990 input_radix
, input_radix
, input_radix
);
2991 printf_filtered (_("Output radix set to decimal "
2992 "%u, hex %x, octal %o.\n"),
2993 output_radix
, output_radix
, output_radix
);
3000 set_print (const char *arg
, int from_tty
)
3003 "\"set print\" must be followed by the name of a print subcommand.\n");
3004 help_list (setprintlist
, "set print ", all_commands
, gdb_stdout
);
3008 show_print (const char *args
, int from_tty
)
3010 cmd_show_list (showprintlist
, from_tty
, "");
3014 set_print_raw (const char *arg
, int from_tty
)
3017 "\"set print raw\" must be followed by the name of a \"print raw\" subcommand.\n");
3018 help_list (setprintrawlist
, "set print raw ", all_commands
, gdb_stdout
);
3022 show_print_raw (const char *args
, int from_tty
)
3024 cmd_show_list (showprintrawlist
, from_tty
, "");
3029 _initialize_valprint (void)
3031 add_prefix_cmd ("print", no_class
, set_print
,
3032 _("Generic command for setting how things print."),
3033 &setprintlist
, "set print ", 0, &setlist
);
3034 add_alias_cmd ("p", "print", no_class
, 1, &setlist
);
3035 /* Prefer set print to set prompt. */
3036 add_alias_cmd ("pr", "print", no_class
, 1, &setlist
);
3038 add_prefix_cmd ("print", no_class
, show_print
,
3039 _("Generic command for showing print settings."),
3040 &showprintlist
, "show print ", 0, &showlist
);
3041 add_alias_cmd ("p", "print", no_class
, 1, &showlist
);
3042 add_alias_cmd ("pr", "print", no_class
, 1, &showlist
);
3044 add_prefix_cmd ("raw", no_class
, set_print_raw
,
3046 Generic command for setting what things to print in \"raw\" mode."),
3047 &setprintrawlist
, "set print raw ", 0, &setprintlist
);
3048 add_prefix_cmd ("raw", no_class
, show_print_raw
,
3049 _("Generic command for showing \"print raw\" settings."),
3050 &showprintrawlist
, "show print raw ", 0, &showprintlist
);
3052 add_setshow_uinteger_cmd ("elements", no_class
,
3053 &user_print_options
.print_max
, _("\
3054 Set limit on string chars or array elements to print."), _("\
3055 Show limit on string chars or array elements to print."), _("\
3056 \"set print elements unlimited\" causes there to be no limit."),
3059 &setprintlist
, &showprintlist
);
3061 add_setshow_boolean_cmd ("null-stop", no_class
,
3062 &user_print_options
.stop_print_at_null
, _("\
3063 Set printing of char arrays to stop at first null char."), _("\
3064 Show printing of char arrays to stop at first null char."), NULL
,
3066 show_stop_print_at_null
,
3067 &setprintlist
, &showprintlist
);
3069 add_setshow_uinteger_cmd ("repeats", no_class
,
3070 &user_print_options
.repeat_count_threshold
, _("\
3071 Set threshold for repeated print elements."), _("\
3072 Show threshold for repeated print elements."), _("\
3073 \"set print repeats unlimited\" causes all elements to be individually printed."),
3075 show_repeat_count_threshold
,
3076 &setprintlist
, &showprintlist
);
3078 add_setshow_boolean_cmd ("pretty", class_support
,
3079 &user_print_options
.prettyformat_structs
, _("\
3080 Set pretty formatting of structures."), _("\
3081 Show pretty formatting of structures."), NULL
,
3083 show_prettyformat_structs
,
3084 &setprintlist
, &showprintlist
);
3086 add_setshow_boolean_cmd ("union", class_support
,
3087 &user_print_options
.unionprint
, _("\
3088 Set printing of unions interior to structures."), _("\
3089 Show printing of unions interior to structures."), NULL
,
3092 &setprintlist
, &showprintlist
);
3094 add_setshow_boolean_cmd ("array", class_support
,
3095 &user_print_options
.prettyformat_arrays
, _("\
3096 Set pretty formatting of arrays."), _("\
3097 Show pretty formatting of arrays."), NULL
,
3099 show_prettyformat_arrays
,
3100 &setprintlist
, &showprintlist
);
3102 add_setshow_boolean_cmd ("address", class_support
,
3103 &user_print_options
.addressprint
, _("\
3104 Set printing of addresses."), _("\
3105 Show printing of addresses."), NULL
,
3108 &setprintlist
, &showprintlist
);
3110 add_setshow_boolean_cmd ("symbol", class_support
,
3111 &user_print_options
.symbol_print
, _("\
3112 Set printing of symbol names when printing pointers."), _("\
3113 Show printing of symbol names when printing pointers."),
3116 &setprintlist
, &showprintlist
);
3118 add_setshow_zuinteger_cmd ("input-radix", class_support
, &input_radix_1
,
3120 Set default input radix for entering numbers."), _("\
3121 Show default input radix for entering numbers."), NULL
,
3124 &setlist
, &showlist
);
3126 add_setshow_zuinteger_cmd ("output-radix", class_support
, &output_radix_1
,
3128 Set default output radix for printing of values."), _("\
3129 Show default output radix for printing of values."), NULL
,
3132 &setlist
, &showlist
);
3134 /* The "set radix" and "show radix" commands are special in that
3135 they are like normal set and show commands but allow two normally
3136 independent variables to be either set or shown with a single
3137 command. So the usual deprecated_add_set_cmd() and [deleted]
3138 add_show_from_set() commands aren't really appropriate. */
3139 /* FIXME: i18n: With the new add_setshow_integer command, that is no
3140 longer true - show can display anything. */
3141 add_cmd ("radix", class_support
, set_radix
, _("\
3142 Set default input and output number radices.\n\
3143 Use 'set input-radix' or 'set output-radix' to independently set each.\n\
3144 Without an argument, sets both radices back to the default value of 10."),
3146 add_cmd ("radix", class_support
, show_radix
, _("\
3147 Show the default input and output number radices.\n\
3148 Use 'show input-radix' or 'show output-radix' to independently show each."),
3151 add_setshow_boolean_cmd ("array-indexes", class_support
,
3152 &user_print_options
.print_array_indexes
, _("\
3153 Set printing of array indexes."), _("\
3154 Show printing of array indexes"), NULL
, NULL
, show_print_array_indexes
,
3155 &setprintlist
, &showprintlist
);