1 /* Print values for GDB, the GNU debugger.
3 Copyright (C) 1986-2022 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 "gdbsupport/gdb_obstack.h"
35 #include "typeprint.h"
38 #include "gdbsupport/byte-vector.h"
39 #include "cli/cli-option.h"
41 #include "cli/cli-style.h"
42 #include "count-one-bits.h"
46 #include "gdbsupport/selftest.h"
47 #include "selftest-arch.h"
49 /* Maximum number of wchars returned from wchar_iterate. */
52 /* A convenience macro to compute the size of a wchar_t buffer containing X
54 #define WCHAR_BUFLEN(X) ((X) * sizeof (gdb_wchar_t))
56 /* Character buffer size saved while iterating over wchars. */
57 #define WCHAR_BUFLEN_MAX WCHAR_BUFLEN (MAX_WCHARS)
59 /* A structure to encapsulate state information from iterated
60 character conversions. */
61 struct converted_character
63 /* The number of characters converted. */
66 /* The result of the conversion. See charset.h for more. */
67 enum wchar_iterate_result result
;
69 /* The (saved) converted character(s). */
70 gdb_wchar_t chars
[WCHAR_BUFLEN_MAX
];
72 /* The first converted target byte. */
75 /* The number of bytes converted. */
78 /* How many times this character(s) is repeated. */
82 /* Command lists for set/show print raw. */
83 struct cmd_list_element
*setprintrawlist
;
84 struct cmd_list_element
*showprintrawlist
;
86 /* Prototypes for local functions */
88 static void set_input_radix_1 (int, unsigned);
90 static void set_output_radix_1 (int, unsigned);
92 static void val_print_type_code_flags (struct type
*type
,
93 struct value
*original_value
,
95 struct ui_file
*stream
);
97 #define PRINT_MAX_DEFAULT 200 /* Start print_max off at this value. */
98 #define PRINT_MAX_DEPTH_DEFAULT 20 /* Start print_max_depth off at this value. */
100 struct value_print_options user_print_options
=
102 Val_prettyformat_default
, /* prettyformat */
103 0, /* prettyformat_arrays */
104 0, /* prettyformat_structs */
107 1, /* addressprint */
108 false, /* nibblesprint */
110 PRINT_MAX_DEFAULT
, /* print_max */
111 10, /* repeat_count_threshold */
112 0, /* output_format */
114 1, /* memory_tag_violations */
115 0, /* stop_print_at_null */
116 0, /* print_array_indexes */
118 1, /* static_field_print */
119 1, /* pascal_static_field_print */
122 1, /* symbol_print */
123 PRINT_MAX_DEPTH_DEFAULT
, /* max_depth */
126 /* Initialize *OPTS to be a copy of the user print options. */
128 get_user_print_options (struct value_print_options
*opts
)
130 *opts
= user_print_options
;
133 /* Initialize *OPTS to be a copy of the user print options, but with
134 pretty-formatting disabled. */
136 get_no_prettyformat_print_options (struct value_print_options
*opts
)
138 *opts
= user_print_options
;
139 opts
->prettyformat
= Val_no_prettyformat
;
142 /* Initialize *OPTS to be a copy of the user print options, but using
143 FORMAT as the formatting option. */
145 get_formatted_print_options (struct value_print_options
*opts
,
148 *opts
= user_print_options
;
149 opts
->format
= format
;
153 show_print_max (struct ui_file
*file
, int from_tty
,
154 struct cmd_list_element
*c
, const char *value
)
157 _("Limit on string chars or array "
158 "elements to print is %s.\n"),
163 /* Default input and output radixes, and output format letter. */
165 unsigned input_radix
= 10;
167 show_input_radix (struct ui_file
*file
, int from_tty
,
168 struct cmd_list_element
*c
, const char *value
)
171 _("Default input radix for entering numbers is %s.\n"),
175 unsigned output_radix
= 10;
177 show_output_radix (struct ui_file
*file
, int from_tty
,
178 struct cmd_list_element
*c
, const char *value
)
181 _("Default output radix for printing of values is %s.\n"),
185 /* By default we print arrays without printing the index of each element in
186 the array. This behavior can be changed by setting PRINT_ARRAY_INDEXES. */
189 show_print_array_indexes (struct ui_file
*file
, int from_tty
,
190 struct cmd_list_element
*c
, const char *value
)
192 gdb_printf (file
, _("Printing of array indexes is %s.\n"), value
);
195 /* Print repeat counts if there are more than this many repetitions of an
196 element in an array. Referenced by the low level language dependent
200 show_repeat_count_threshold (struct ui_file
*file
, int from_tty
,
201 struct cmd_list_element
*c
, const char *value
)
203 gdb_printf (file
, _("Threshold for repeated print elements is %s.\n"),
207 /* If nonzero, prints memory tag violations for pointers. */
210 show_memory_tag_violations (struct ui_file
*file
, int from_tty
,
211 struct cmd_list_element
*c
, const char *value
)
214 _("Printing of memory tag violations is %s.\n"),
218 /* If nonzero, stops printing of char arrays at first null. */
221 show_stop_print_at_null (struct ui_file
*file
, int from_tty
,
222 struct cmd_list_element
*c
, const char *value
)
225 _("Printing of char arrays to stop "
226 "at first null char is %s.\n"),
230 /* Controls pretty printing of structures. */
233 show_prettyformat_structs (struct ui_file
*file
, int from_tty
,
234 struct cmd_list_element
*c
, const char *value
)
236 gdb_printf (file
, _("Pretty formatting of structures is %s.\n"), value
);
239 /* Controls pretty printing of arrays. */
242 show_prettyformat_arrays (struct ui_file
*file
, int from_tty
,
243 struct cmd_list_element
*c
, const char *value
)
245 gdb_printf (file
, _("Pretty formatting of arrays is %s.\n"), value
);
248 /* If nonzero, causes unions inside structures or other unions to be
252 show_unionprint (struct ui_file
*file
, int from_tty
,
253 struct cmd_list_element
*c
, const char *value
)
256 _("Printing of unions interior to structures is %s.\n"),
260 /* Controls the format of printing binary values. */
263 show_nibbles (struct ui_file
*file
, int from_tty
,
264 struct cmd_list_element
*c
, const char *value
)
267 _("Printing binary values in groups is %s.\n"),
271 /* If nonzero, causes machine addresses to be printed in certain contexts. */
274 show_addressprint (struct ui_file
*file
, int from_tty
,
275 struct cmd_list_element
*c
, const char *value
)
277 gdb_printf (file
, _("Printing of addresses is %s.\n"), value
);
281 show_symbol_print (struct ui_file
*file
, int from_tty
,
282 struct cmd_list_element
*c
, const char *value
)
285 _("Printing of symbols when printing pointers is %s.\n"),
291 /* A helper function for val_print. When printing in "summary" mode,
292 we want to print scalar arguments, but not aggregate arguments.
293 This function distinguishes between the two. */
296 val_print_scalar_type_p (struct type
*type
)
298 type
= check_typedef (type
);
299 while (TYPE_IS_REFERENCE (type
))
301 type
= type
->target_type ();
302 type
= check_typedef (type
);
304 switch (type
->code ())
306 case TYPE_CODE_ARRAY
:
307 case TYPE_CODE_STRUCT
:
308 case TYPE_CODE_UNION
:
310 case TYPE_CODE_STRING
:
317 /* A helper function for val_print. When printing with limited depth we
318 want to print string and scalar arguments, but not aggregate arguments.
319 This function distinguishes between the two. */
322 val_print_scalar_or_string_type_p (struct type
*type
,
323 const struct language_defn
*language
)
325 return (val_print_scalar_type_p (type
)
326 || language
->is_string_type_p (type
));
329 /* See valprint.h. */
332 valprint_check_validity (struct ui_file
*stream
,
334 LONGEST embedded_offset
,
335 const struct value
*val
)
337 type
= check_typedef (type
);
339 if (type_not_associated (type
))
341 val_print_not_associated (stream
);
345 if (type_not_allocated (type
))
347 val_print_not_allocated (stream
);
351 if (type
->code () != TYPE_CODE_UNION
352 && type
->code () != TYPE_CODE_STRUCT
353 && type
->code () != TYPE_CODE_ARRAY
)
355 if (value_bits_any_optimized_out (val
,
356 TARGET_CHAR_BIT
* embedded_offset
,
357 TARGET_CHAR_BIT
* type
->length ()))
359 val_print_optimized_out (val
, stream
);
363 if (value_bits_synthetic_pointer (val
, TARGET_CHAR_BIT
* embedded_offset
,
364 TARGET_CHAR_BIT
* type
->length ()))
366 const int is_ref
= type
->code () == TYPE_CODE_REF
;
367 int ref_is_addressable
= 0;
371 const struct value
*deref_val
= coerce_ref_if_computed (val
);
373 if (deref_val
!= NULL
)
374 ref_is_addressable
= value_lval_const (deref_val
) == lval_memory
;
377 if (!is_ref
|| !ref_is_addressable
)
378 fputs_styled (_("<synthetic pointer>"), metadata_style
.style (),
381 /* C++ references should be valid even if they're synthetic. */
385 if (!value_bytes_available (val
, embedded_offset
, type
->length ()))
387 val_print_unavailable (stream
);
396 val_print_optimized_out (const struct value
*val
, struct ui_file
*stream
)
398 if (val
!= NULL
&& value_lval_const (val
) == lval_register
)
399 val_print_not_saved (stream
);
401 fprintf_styled (stream
, metadata_style
.style (), _("<optimized out>"));
405 val_print_not_saved (struct ui_file
*stream
)
407 fprintf_styled (stream
, metadata_style
.style (), _("<not saved>"));
411 val_print_unavailable (struct ui_file
*stream
)
413 fprintf_styled (stream
, metadata_style
.style (), _("<unavailable>"));
417 val_print_invalid_address (struct ui_file
*stream
)
419 fprintf_styled (stream
, metadata_style
.style (), _("<invalid address>"));
422 /* Print a pointer based on the type of its target.
424 Arguments to this functions are roughly the same as those in
425 generic_val_print. A difference is that ADDRESS is the address to print,
426 with embedded_offset already added. ELTTYPE represents
427 the pointed type after check_typedef. */
430 print_unpacked_pointer (struct type
*type
, struct type
*elttype
,
431 CORE_ADDR address
, struct ui_file
*stream
,
432 const struct value_print_options
*options
)
434 struct gdbarch
*gdbarch
= type
->arch ();
436 if (elttype
->code () == TYPE_CODE_FUNC
)
438 /* Try to print what function it points to. */
439 print_function_pointer_address (options
, gdbarch
, address
, stream
);
443 if (options
->symbol_print
)
444 print_address_demangle (options
, gdbarch
, address
, stream
, demangle
);
445 else if (options
->addressprint
)
446 gdb_puts (paddress (gdbarch
, address
), stream
);
449 /* generic_val_print helper for TYPE_CODE_ARRAY. */
452 generic_val_print_array (struct value
*val
,
453 struct ui_file
*stream
, int recurse
,
454 const struct value_print_options
*options
,
456 generic_val_print_decorations
*decorations
)
458 struct type
*type
= check_typedef (value_type (val
));
459 struct type
*unresolved_elttype
= type
->target_type ();
460 struct type
*elttype
= check_typedef (unresolved_elttype
);
462 if (type
->length () > 0 && unresolved_elttype
->length () > 0)
464 LONGEST low_bound
, high_bound
;
466 if (!get_array_bounds (type
, &low_bound
, &high_bound
))
467 error (_("Could not determine the array high bound"));
469 gdb_puts (decorations
->array_start
, stream
);
470 value_print_array_elements (val
, stream
, recurse
, options
, 0);
471 gdb_puts (decorations
->array_end
, stream
);
475 /* Array of unspecified length: treat like pointer to first elt. */
476 print_unpacked_pointer (type
, elttype
, value_address (val
),
482 /* generic_value_print helper for TYPE_CODE_PTR. */
485 generic_value_print_ptr (struct value
*val
, struct ui_file
*stream
,
486 const struct value_print_options
*options
)
489 if (options
->format
&& options
->format
!= 's')
490 value_print_scalar_formatted (val
, options
, 0, stream
);
493 struct type
*type
= check_typedef (value_type (val
));
494 struct type
*elttype
= check_typedef (type
->target_type ());
495 const gdb_byte
*valaddr
= value_contents_for_printing (val
).data ();
496 CORE_ADDR addr
= unpack_pointer (type
, valaddr
);
498 print_unpacked_pointer (type
, elttype
, addr
, stream
, options
);
503 /* Print '@' followed by the address contained in ADDRESS_BUFFER. */
506 print_ref_address (struct type
*type
, const gdb_byte
*address_buffer
,
507 int embedded_offset
, struct ui_file
*stream
)
509 struct gdbarch
*gdbarch
= type
->arch ();
511 if (address_buffer
!= NULL
)
514 = extract_typed_address (address_buffer
+ embedded_offset
, type
);
516 gdb_printf (stream
, "@");
517 gdb_puts (paddress (gdbarch
, address
), stream
);
519 /* Else: we have a non-addressable value, such as a DW_AT_const_value. */
522 /* If VAL is addressable, return the value contents buffer of a value that
523 represents a pointer to VAL. Otherwise return NULL. */
525 static const gdb_byte
*
526 get_value_addr_contents (struct value
*deref_val
)
528 gdb_assert (deref_val
!= NULL
);
530 if (value_lval_const (deref_val
) == lval_memory
)
531 return value_contents_for_printing_const (value_addr (deref_val
)).data ();
534 /* We have a non-addressable value, such as a DW_AT_const_value. */
539 /* generic_val_print helper for TYPE_CODE_{RVALUE_,}REF. */
542 generic_val_print_ref (struct type
*type
,
543 int embedded_offset
, struct ui_file
*stream
, int recurse
,
544 struct value
*original_value
,
545 const struct value_print_options
*options
)
547 struct type
*elttype
= check_typedef (type
->target_type ());
548 struct value
*deref_val
= NULL
;
549 const int value_is_synthetic
550 = value_bits_synthetic_pointer (original_value
,
551 TARGET_CHAR_BIT
* embedded_offset
,
552 TARGET_CHAR_BIT
* type
->length ());
553 const int must_coerce_ref
= ((options
->addressprint
&& value_is_synthetic
)
554 || options
->deref_ref
);
555 const int type_is_defined
= elttype
->code () != TYPE_CODE_UNDEF
;
556 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
).data ();
558 if (must_coerce_ref
&& type_is_defined
)
560 deref_val
= coerce_ref_if_computed (original_value
);
562 if (deref_val
!= NULL
)
564 /* More complicated computed references are not supported. */
565 gdb_assert (embedded_offset
== 0);
568 deref_val
= value_at (type
->target_type (),
569 unpack_pointer (type
, valaddr
+ embedded_offset
));
571 /* Else, original_value isn't a synthetic reference or we don't have to print
572 the reference's contents.
574 Notice that for references to TYPE_CODE_STRUCT, 'set print object on' will
575 cause original_value to be a not_lval instead of an lval_computed,
576 which will make value_bits_synthetic_pointer return false.
577 This happens because if options->objectprint is true, c_value_print will
578 overwrite original_value's contents with the result of coercing
579 the reference through value_addr, and then set its type back to
580 TYPE_CODE_REF. In that case we don't have to coerce the reference again;
581 we can simply treat it as non-synthetic and move on. */
583 if (options
->addressprint
)
585 const gdb_byte
*address
= (value_is_synthetic
&& type_is_defined
586 ? get_value_addr_contents (deref_val
)
589 print_ref_address (type
, address
, embedded_offset
, stream
);
591 if (options
->deref_ref
)
592 gdb_puts (": ", stream
);
595 if (options
->deref_ref
)
598 common_val_print (deref_val
, stream
, recurse
, options
,
601 gdb_puts ("???", stream
);
605 /* Helper function for generic_val_print_enum.
606 This is also used to print enums in TYPE_CODE_FLAGS values. */
609 generic_val_print_enum_1 (struct type
*type
, LONGEST val
,
610 struct ui_file
*stream
)
615 len
= type
->num_fields ();
616 for (i
= 0; i
< len
; i
++)
619 if (val
== type
->field (i
).loc_enumval ())
626 fputs_styled (type
->field (i
).name (), variable_name_style
.style (),
629 else if (type
->is_flag_enum ())
633 /* We have a "flag" enum, so we try to decompose it into pieces as
634 appropriate. The enum may have multiple enumerators representing
635 the same bit, in which case we choose to only print the first one
637 for (i
= 0; i
< len
; ++i
)
641 ULONGEST enumval
= type
->field (i
).loc_enumval ();
642 int nbits
= count_one_bits_ll (enumval
);
644 gdb_assert (nbits
== 0 || nbits
== 1);
646 if ((val
& enumval
) != 0)
650 gdb_puts ("(", stream
);
654 gdb_puts (" | ", stream
);
656 val
&= ~type
->field (i
).loc_enumval ();
657 fputs_styled (type
->field (i
).name (),
658 variable_name_style
.style (), stream
);
664 /* There are leftover bits, print them. */
666 gdb_puts ("(", stream
);
668 gdb_puts (" | ", stream
);
670 gdb_puts ("unknown: 0x", stream
);
671 print_longest (stream
, 'x', 0, val
);
672 gdb_puts (")", stream
);
676 /* Nothing has been printed and the value is 0, the enum value must
678 gdb_puts ("0", stream
);
682 /* Something has been printed, close the parenthesis. */
683 gdb_puts (")", stream
);
687 print_longest (stream
, 'd', 0, val
);
690 /* generic_val_print helper for TYPE_CODE_ENUM. */
693 generic_val_print_enum (struct type
*type
,
694 int embedded_offset
, struct ui_file
*stream
,
695 struct value
*original_value
,
696 const struct value_print_options
*options
)
699 struct gdbarch
*gdbarch
= type
->arch ();
700 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
702 gdb_assert (!options
->format
);
704 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
).data ();
706 val
= unpack_long (type
, valaddr
+ embedded_offset
* unit_size
);
708 generic_val_print_enum_1 (type
, val
, stream
);
711 /* generic_val_print helper for TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
714 generic_val_print_func (struct type
*type
,
715 int embedded_offset
, CORE_ADDR address
,
716 struct ui_file
*stream
,
717 struct value
*original_value
,
718 const struct value_print_options
*options
)
720 struct gdbarch
*gdbarch
= type
->arch ();
722 gdb_assert (!options
->format
);
724 /* FIXME, we should consider, at least for ANSI C language,
725 eliminating the distinction made between FUNCs and POINTERs to
727 gdb_printf (stream
, "{");
728 type_print (type
, "", stream
, -1);
729 gdb_printf (stream
, "} ");
730 /* Try to print what function it points to, and its address. */
731 print_address_demangle (options
, gdbarch
, address
, stream
, demangle
);
734 /* generic_value_print helper for TYPE_CODE_BOOL. */
737 generic_value_print_bool
738 (struct value
*value
, struct ui_file
*stream
,
739 const struct value_print_options
*options
,
740 const struct generic_val_print_decorations
*decorations
)
742 if (options
->format
|| options
->output_format
)
744 struct value_print_options opts
= *options
;
745 opts
.format
= (options
->format
? options
->format
746 : options
->output_format
);
747 value_print_scalar_formatted (value
, &opts
, 0, stream
);
751 const gdb_byte
*valaddr
= value_contents_for_printing (value
).data ();
752 struct type
*type
= check_typedef (value_type (value
));
753 LONGEST val
= unpack_long (type
, valaddr
);
755 gdb_puts (decorations
->false_name
, stream
);
757 gdb_puts (decorations
->true_name
, stream
);
759 print_longest (stream
, 'd', 0, val
);
763 /* generic_value_print helper for TYPE_CODE_INT. */
766 generic_value_print_int (struct value
*val
, struct ui_file
*stream
,
767 const struct value_print_options
*options
)
769 struct value_print_options opts
= *options
;
771 opts
.format
= (options
->format
? options
->format
772 : options
->output_format
);
773 value_print_scalar_formatted (val
, &opts
, 0, stream
);
776 /* generic_value_print helper for TYPE_CODE_CHAR. */
779 generic_value_print_char (struct value
*value
, struct ui_file
*stream
,
780 const struct value_print_options
*options
)
782 if (options
->format
|| options
->output_format
)
784 struct value_print_options opts
= *options
;
786 opts
.format
= (options
->format
? options
->format
787 : options
->output_format
);
788 value_print_scalar_formatted (value
, &opts
, 0, stream
);
792 struct type
*unresolved_type
= value_type (value
);
793 struct type
*type
= check_typedef (unresolved_type
);
794 const gdb_byte
*valaddr
= value_contents_for_printing (value
).data ();
796 LONGEST val
= unpack_long (type
, valaddr
);
797 if (type
->is_unsigned ())
798 gdb_printf (stream
, "%u", (unsigned int) val
);
800 gdb_printf (stream
, "%d", (int) val
);
801 gdb_puts (" ", stream
);
802 current_language
->printchar (val
, unresolved_type
, stream
);
806 /* generic_val_print helper for TYPE_CODE_FLT and TYPE_CODE_DECFLOAT. */
809 generic_val_print_float (struct type
*type
, struct ui_file
*stream
,
810 struct value
*original_value
,
811 const struct value_print_options
*options
)
813 gdb_assert (!options
->format
);
815 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
).data ();
817 print_floating (valaddr
, type
, stream
);
820 /* generic_val_print helper for TYPE_CODE_FIXED_POINT. */
823 generic_val_print_fixed_point (struct value
*val
, struct ui_file
*stream
,
824 const struct value_print_options
*options
)
827 value_print_scalar_formatted (val
, options
, 0, stream
);
830 struct type
*type
= value_type (val
);
832 const gdb_byte
*valaddr
= value_contents_for_printing (val
).data ();
835 f
.read_fixed_point (gdb::make_array_view (valaddr
, type
->length ()),
836 type_byte_order (type
), type
->is_unsigned (),
837 type
->fixed_point_scaling_factor ());
839 const char *fmt
= type
->length () < 4 ? "%.11Fg" : "%.17Fg";
840 std::string str
= gmp_string_printf (fmt
, f
.val
);
841 gdb_printf (stream
, "%s", str
.c_str ());
845 /* generic_value_print helper for TYPE_CODE_COMPLEX. */
848 generic_value_print_complex (struct value
*val
, struct ui_file
*stream
,
849 const struct value_print_options
*options
,
850 const struct generic_val_print_decorations
853 gdb_printf (stream
, "%s", decorations
->complex_prefix
);
855 struct value
*real_part
= value_real_part (val
);
856 value_print_scalar_formatted (real_part
, options
, 0, stream
);
857 gdb_printf (stream
, "%s", decorations
->complex_infix
);
859 struct value
*imag_part
= value_imaginary_part (val
);
860 value_print_scalar_formatted (imag_part
, options
, 0, stream
);
861 gdb_printf (stream
, "%s", decorations
->complex_suffix
);
864 /* generic_value_print helper for TYPE_CODE_MEMBERPTR. */
867 generic_value_print_memberptr
868 (struct value
*val
, struct ui_file
*stream
,
870 const struct value_print_options
*options
,
871 const struct generic_val_print_decorations
*decorations
)
873 if (!options
->format
)
875 /* Member pointers are essentially specific to C++, and so if we
876 encounter one, we should print it according to C++ rules. */
877 struct type
*type
= check_typedef (value_type (val
));
878 const gdb_byte
*valaddr
= value_contents_for_printing (val
).data ();
879 cp_print_class_member (valaddr
, type
, stream
, "&");
882 generic_value_print (val
, stream
, recurse
, options
, decorations
);
885 /* See valprint.h. */
888 generic_value_print (struct value
*val
, struct ui_file
*stream
, int recurse
,
889 const struct value_print_options
*options
,
890 const struct generic_val_print_decorations
*decorations
)
892 struct type
*type
= value_type (val
);
894 type
= check_typedef (type
);
896 if (is_fixed_point_type (type
))
897 type
= type
->fixed_point_type_base_type ();
899 /* Widen a subrange to its target type, then use that type's
901 while (type
->code () == TYPE_CODE_RANGE
)
903 type
= check_typedef (type
->target_type ());
904 val
= value_cast (type
, val
);
907 switch (type
->code ())
909 case TYPE_CODE_ARRAY
:
910 generic_val_print_array (val
, stream
, recurse
, options
, decorations
);
913 case TYPE_CODE_MEMBERPTR
:
914 generic_value_print_memberptr (val
, stream
, recurse
, options
,
919 generic_value_print_ptr (val
, stream
, options
);
923 case TYPE_CODE_RVALUE_REF
:
924 generic_val_print_ref (type
, 0, stream
, recurse
,
930 value_print_scalar_formatted (val
, options
, 0, stream
);
932 generic_val_print_enum (type
, 0, stream
, val
, options
);
935 case TYPE_CODE_FLAGS
:
937 value_print_scalar_formatted (val
, options
, 0, stream
);
939 val_print_type_code_flags (type
, val
, 0, stream
);
943 case TYPE_CODE_METHOD
:
945 value_print_scalar_formatted (val
, options
, 0, stream
);
947 generic_val_print_func (type
, 0, value_address (val
), stream
,
952 generic_value_print_bool (val
, stream
, options
, decorations
);
956 generic_value_print_int (val
, stream
, options
);
960 generic_value_print_char (val
, stream
, options
);
964 case TYPE_CODE_DECFLOAT
:
966 value_print_scalar_formatted (val
, options
, 0, stream
);
968 generic_val_print_float (type
, stream
, val
, options
);
971 case TYPE_CODE_FIXED_POINT
:
972 generic_val_print_fixed_point (val
, stream
, options
);
976 gdb_puts (decorations
->void_name
, stream
);
979 case TYPE_CODE_ERROR
:
980 gdb_printf (stream
, "%s", TYPE_ERROR_NAME (type
));
983 case TYPE_CODE_UNDEF
:
984 /* This happens (without TYPE_STUB set) on systems which don't use
985 dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
986 and no complete type for struct foo in that file. */
987 fprintf_styled (stream
, metadata_style
.style (), _("<incomplete type>"));
990 case TYPE_CODE_COMPLEX
:
991 generic_value_print_complex (val
, stream
, options
, decorations
);
994 case TYPE_CODE_METHODPTR
:
995 cplus_print_method_ptr (value_contents_for_printing (val
).data (), type
,
999 case TYPE_CODE_UNION
:
1000 case TYPE_CODE_STRUCT
:
1002 error (_("Unhandled type code %d in symbol table."),
1007 /* Print using the given LANGUAGE the value VAL onto stream STREAM according
1010 This is a preferable interface to val_print, above, because it uses
1011 GDB's value mechanism. */
1014 common_val_print (struct value
*value
, struct ui_file
*stream
, int recurse
,
1015 const struct value_print_options
*options
,
1016 const struct language_defn
*language
)
1018 if (language
->la_language
== language_ada
)
1019 /* The value might have a dynamic type, which would cause trouble
1020 below when trying to extract the value contents (since the value
1021 size is determined from the type size which is unknown). So
1022 get a fixed representation of our value. */
1023 value
= ada_to_fixed_value (value
);
1025 if (value_lazy (value
))
1026 value_fetch_lazy (value
);
1028 struct value_print_options local_opts
= *options
;
1029 struct type
*type
= value_type (value
);
1030 struct type
*real_type
= check_typedef (type
);
1032 if (local_opts
.prettyformat
== Val_prettyformat_default
)
1033 local_opts
.prettyformat
= (local_opts
.prettyformat_structs
1034 ? Val_prettyformat
: Val_no_prettyformat
);
1038 /* Ensure that the type is complete and not just a stub. If the type is
1039 only a stub and we can't find and substitute its complete type, then
1040 print appropriate string and return. */
1042 if (real_type
->is_stub ())
1044 fprintf_styled (stream
, metadata_style
.style (), _("<incomplete type>"));
1048 if (!valprint_check_validity (stream
, real_type
, 0, value
))
1053 if (apply_ext_lang_val_pretty_printer (value
, stream
, recurse
, options
,
1058 /* Handle summary mode. If the value is a scalar, print it;
1059 otherwise, print an ellipsis. */
1060 if (options
->summary
&& !val_print_scalar_type_p (type
))
1062 gdb_printf (stream
, "...");
1066 /* If this value is too deep then don't print it. */
1067 if (!val_print_scalar_or_string_type_p (type
, language
)
1068 && val_print_check_max_depth (stream
, recurse
, options
, language
))
1073 language
->value_print_inner (value
, stream
, recurse
, &local_opts
);
1075 catch (const gdb_exception_error
&except
)
1077 fprintf_styled (stream
, metadata_style
.style (),
1078 _("<error reading variable: %s>"), except
.what ());
1082 /* See valprint.h. */
1085 val_print_check_max_depth (struct ui_file
*stream
, int recurse
,
1086 const struct value_print_options
*options
,
1087 const struct language_defn
*language
)
1089 if (options
->max_depth
> -1 && recurse
>= options
->max_depth
)
1091 gdb_assert (language
->struct_too_deep_ellipsis () != NULL
);
1092 gdb_puts (language
->struct_too_deep_ellipsis (), stream
);
1099 /* Check whether the value VAL is printable. Return 1 if it is;
1100 return 0 and print an appropriate error message to STREAM according to
1101 OPTIONS if it is not. */
1104 value_check_printable (struct value
*val
, struct ui_file
*stream
,
1105 const struct value_print_options
*options
)
1109 fprintf_styled (stream
, metadata_style
.style (),
1110 _("<address of value unknown>"));
1114 if (value_entirely_optimized_out (val
))
1116 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1117 gdb_printf (stream
, "...");
1119 val_print_optimized_out (val
, stream
);
1123 if (value_entirely_unavailable (val
))
1125 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1126 gdb_printf (stream
, "...");
1128 val_print_unavailable (stream
);
1132 if (value_type (val
)->code () == TYPE_CODE_INTERNAL_FUNCTION
)
1134 fprintf_styled (stream
, metadata_style
.style (),
1135 _("<internal function %s>"),
1136 value_internal_function_name (val
));
1140 if (type_not_associated (value_type (val
)))
1142 val_print_not_associated (stream
);
1146 if (type_not_allocated (value_type (val
)))
1148 val_print_not_allocated (stream
);
1155 /* See valprint.h. */
1158 common_val_print_checked (struct value
*val
, struct ui_file
*stream
,
1160 const struct value_print_options
*options
,
1161 const struct language_defn
*language
)
1163 if (!value_check_printable (val
, stream
, options
))
1165 common_val_print (val
, stream
, recurse
, options
, language
);
1168 /* Print on stream STREAM the value VAL according to OPTIONS. The value
1169 is printed using the current_language syntax. */
1172 value_print (struct value
*val
, struct ui_file
*stream
,
1173 const struct value_print_options
*options
)
1175 scoped_value_mark free_values
;
1177 if (!value_check_printable (val
, stream
, options
))
1183 = apply_ext_lang_val_pretty_printer (val
, stream
, 0, options
,
1190 current_language
->value_print (val
, stream
, options
);
1193 /* Meant to be used in debug sessions, so don't export it in a header file. */
1194 extern void ATTRIBUTE_UNUSED
debug_val (struct value
*val
);
1198 void ATTRIBUTE_UNUSED
1199 debug_val (struct value
*val
)
1201 value_print (val
, gdb_stdlog
, &user_print_options
);
1202 gdb_flush (gdb_stdlog
);
1206 val_print_type_code_flags (struct type
*type
, struct value
*original_value
,
1207 int embedded_offset
, struct ui_file
*stream
)
1209 const gdb_byte
*valaddr
= (value_contents_for_printing (original_value
).data ()
1211 ULONGEST val
= unpack_long (type
, valaddr
);
1212 int field
, nfields
= type
->num_fields ();
1213 struct gdbarch
*gdbarch
= type
->arch ();
1214 struct type
*bool_type
= builtin_type (gdbarch
)->builtin_bool
;
1216 gdb_puts ("[", stream
);
1217 for (field
= 0; field
< nfields
; field
++)
1219 if (type
->field (field
).name ()[0] != '\0')
1221 struct type
*field_type
= type
->field (field
).type ();
1223 if (field_type
== bool_type
1224 /* We require boolean types here to be one bit wide. This is a
1225 problematic place to notify the user of an internal error
1226 though. Instead just fall through and print the field as an
1228 && TYPE_FIELD_BITSIZE (type
, field
) == 1)
1230 if (val
& ((ULONGEST
)1 << type
->field (field
).loc_bitpos ()))
1233 styled_string (variable_name_style
.style (),
1234 type
->field (field
).name ()));
1238 unsigned field_len
= TYPE_FIELD_BITSIZE (type
, field
);
1239 ULONGEST field_val
= val
>> type
->field (field
).loc_bitpos ();
1241 if (field_len
< sizeof (ULONGEST
) * TARGET_CHAR_BIT
)
1242 field_val
&= ((ULONGEST
) 1 << field_len
) - 1;
1243 gdb_printf (stream
, " %ps=",
1244 styled_string (variable_name_style
.style (),
1245 type
->field (field
).name ()));
1246 if (field_type
->code () == TYPE_CODE_ENUM
)
1247 generic_val_print_enum_1 (field_type
, field_val
, stream
);
1249 print_longest (stream
, 'd', 0, field_val
);
1253 gdb_puts (" ]", stream
);
1256 /* See valprint.h. */
1259 value_print_scalar_formatted (struct value
*val
,
1260 const struct value_print_options
*options
,
1262 struct ui_file
*stream
)
1264 struct type
*type
= check_typedef (value_type (val
));
1266 gdb_assert (val
!= NULL
);
1268 /* If we get here with a string format, try again without it. Go
1269 all the way back to the language printers, which may call us
1271 if (options
->format
== 's')
1273 struct value_print_options opts
= *options
;
1276 common_val_print (val
, stream
, 0, &opts
, current_language
);
1280 /* value_contents_for_printing fetches all VAL's contents. They are
1281 needed to check whether VAL is optimized-out or unavailable
1283 const gdb_byte
*valaddr
= value_contents_for_printing (val
).data ();
1285 /* A scalar object that does not have all bits available can't be
1286 printed, because all bits contribute to its representation. */
1287 if (value_bits_any_optimized_out (val
, 0,
1288 TARGET_CHAR_BIT
* type
->length ()))
1289 val_print_optimized_out (val
, stream
);
1290 else if (!value_bytes_available (val
, 0, type
->length ()))
1291 val_print_unavailable (stream
);
1293 print_scalar_formatted (valaddr
, type
, options
, size
, stream
);
1296 /* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g.
1297 The raison d'etre of this function is to consolidate printing of
1298 LONG_LONG's into this one function. The format chars b,h,w,g are
1299 from print_scalar_formatted(). Numbers are printed using C
1302 USE_C_FORMAT means to use C format in all cases. Without it,
1303 'o' and 'x' format do not include the standard C radix prefix
1306 Hilfinger/2004-09-09: USE_C_FORMAT was originally called USE_LOCAL
1307 and was intended to request formatting according to the current
1308 language and would be used for most integers that GDB prints. The
1309 exceptional cases were things like protocols where the format of
1310 the integer is a protocol thing, not a user-visible thing). The
1311 parameter remains to preserve the information of what things might
1312 be printed with language-specific format, should we ever resurrect
1316 print_longest (struct ui_file
*stream
, int format
, int use_c_format
,
1324 val
= int_string (val_long
, 10, 1, 0, 1); break;
1326 val
= int_string (val_long
, 10, 0, 0, 1); break;
1328 val
= int_string (val_long
, 16, 0, 0, use_c_format
); break;
1330 val
= int_string (val_long
, 16, 0, 2, 1); break;
1332 val
= int_string (val_long
, 16, 0, 4, 1); break;
1334 val
= int_string (val_long
, 16, 0, 8, 1); break;
1336 val
= int_string (val_long
, 16, 0, 16, 1); break;
1339 val
= int_string (val_long
, 8, 0, 0, use_c_format
); break;
1341 internal_error (__FILE__
, __LINE__
,
1342 _("failed internal consistency check"));
1344 gdb_puts (val
, stream
);
1347 /* This used to be a macro, but I don't think it is called often enough
1348 to merit such treatment. */
1349 /* Convert a LONGEST to an int. This is used in contexts (e.g. number of
1350 arguments to a function, number in a value history, register number, etc.)
1351 where the value must not be larger than can fit in an int. */
1354 longest_to_int (LONGEST arg
)
1356 /* Let the compiler do the work. */
1357 int rtnval
= (int) arg
;
1359 /* Check for overflows or underflows. */
1360 if (sizeof (LONGEST
) > sizeof (int))
1364 error (_("Value out of range."));
1370 /* Print a floating point value of floating-point type TYPE,
1371 pointed to in GDB by VALADDR, on STREAM. */
1374 print_floating (const gdb_byte
*valaddr
, struct type
*type
,
1375 struct ui_file
*stream
)
1377 std::string str
= target_float_to_string (valaddr
, type
);
1378 gdb_puts (str
.c_str (), stream
);
1382 print_binary_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1383 unsigned len
, enum bfd_endian byte_order
, bool zero_pad
,
1384 const struct value_print_options
*options
)
1389 bool seen_a_one
= false;
1390 const char *digit_separator
= nullptr;
1392 /* Declared "int" so it will be signed.
1393 This ensures that right shift will shift in zeros. */
1395 const int mask
= 0x080;
1397 if (options
->nibblesprint
)
1398 digit_separator
= current_language
->get_digit_separator();
1400 if (byte_order
== BFD_ENDIAN_BIG
)
1406 /* Every byte has 8 binary characters; peel off
1407 and print from the MSB end. */
1409 for (i
= 0; i
< (HOST_CHAR_BIT
* sizeof (*p
)); i
++)
1411 if (options
->nibblesprint
&& seen_a_one
&& i
% 4 == 0)
1412 gdb_putc (*digit_separator
, stream
);
1414 if (*p
& (mask
>> i
))
1419 if (zero_pad
|| seen_a_one
|| b
== '1')
1420 gdb_putc (b
, stream
);
1421 else if (options
->nibblesprint
)
1423 if ((0xf0 & (mask
>> i
) && (*p
& 0xf0))
1424 || (0x0f & (mask
>> i
) && (*p
& 0x0f)))
1425 gdb_putc (b
, stream
);
1435 for (p
= valaddr
+ len
- 1;
1439 for (i
= 0; i
< (HOST_CHAR_BIT
* sizeof (*p
)); i
++)
1441 if (options
->nibblesprint
&& seen_a_one
&& i
% 4 == 0)
1442 gdb_putc (*digit_separator
, stream
);
1444 if (*p
& (mask
>> i
))
1449 if (zero_pad
|| seen_a_one
|| b
== '1')
1450 gdb_putc (b
, stream
);
1451 else if (options
->nibblesprint
)
1453 if ((0xf0 & (mask
>> i
) && (*p
& 0xf0))
1454 || (0x0f & (mask
>> i
) && (*p
& 0x0f)))
1455 gdb_putc (b
, stream
);
1464 /* When not zero-padding, ensure that something is printed when the
1466 if (!zero_pad
&& !seen_a_one
)
1467 gdb_putc ('0', stream
);
1470 /* A helper for print_octal_chars that emits a single octal digit,
1471 optionally suppressing it if is zero and updating SEEN_A_ONE. */
1474 emit_octal_digit (struct ui_file
*stream
, bool *seen_a_one
, int digit
)
1476 if (*seen_a_one
|| digit
!= 0)
1477 gdb_printf (stream
, "%o", digit
);
1482 /* VALADDR points to an integer of LEN bytes.
1483 Print it in octal on stream or format it in buf. */
1486 print_octal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1487 unsigned len
, enum bfd_endian byte_order
)
1490 unsigned char octa1
, octa2
, octa3
, carry
;
1493 /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track
1494 * the extra bits, which cycle every three bytes:
1496 * Byte side: 0 1 2 3
1498 * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 |
1500 * Octal side: 0 1 carry 3 4 carry ...
1502 * Cycle number: 0 1 2
1504 * But of course we are printing from the high side, so we have to
1505 * figure out where in the cycle we are so that we end up with no
1506 * left over bits at the end.
1508 #define BITS_IN_OCTAL 3
1509 #define HIGH_ZERO 0340
1510 #define LOW_ZERO 0034
1511 #define CARRY_ZERO 0003
1512 static_assert (HIGH_ZERO
+ LOW_ZERO
+ CARRY_ZERO
== 0xff,
1513 "cycle zero constants are wrong");
1514 #define HIGH_ONE 0200
1515 #define MID_ONE 0160
1516 #define LOW_ONE 0016
1517 #define CARRY_ONE 0001
1518 static_assert (HIGH_ONE
+ MID_ONE
+ LOW_ONE
+ CARRY_ONE
== 0xff,
1519 "cycle one constants are wrong");
1520 #define HIGH_TWO 0300
1521 #define MID_TWO 0070
1522 #define LOW_TWO 0007
1523 static_assert (HIGH_TWO
+ MID_TWO
+ LOW_TWO
== 0xff,
1524 "cycle two constants are wrong");
1526 /* For 32 we start in cycle 2, with two bits and one bit carry;
1527 for 64 in cycle in cycle 1, with one bit and a two bit carry. */
1529 cycle
= (len
* HOST_CHAR_BIT
) % BITS_IN_OCTAL
;
1532 gdb_puts ("0", stream
);
1533 bool seen_a_one
= false;
1534 if (byte_order
== BFD_ENDIAN_BIG
)
1543 /* No carry in, carry out two bits. */
1545 octa1
= (HIGH_ZERO
& *p
) >> 5;
1546 octa2
= (LOW_ZERO
& *p
) >> 2;
1547 carry
= (CARRY_ZERO
& *p
);
1548 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1549 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1553 /* Carry in two bits, carry out one bit. */
1555 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1556 octa2
= (MID_ONE
& *p
) >> 4;
1557 octa3
= (LOW_ONE
& *p
) >> 1;
1558 carry
= (CARRY_ONE
& *p
);
1559 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1560 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1561 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1565 /* Carry in one bit, no carry out. */
1567 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1568 octa2
= (MID_TWO
& *p
) >> 3;
1569 octa3
= (LOW_TWO
& *p
);
1571 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1572 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1573 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1577 error (_("Internal error in octal conversion;"));
1581 cycle
= cycle
% BITS_IN_OCTAL
;
1586 for (p
= valaddr
+ len
- 1;
1593 /* Carry out, no carry in */
1595 octa1
= (HIGH_ZERO
& *p
) >> 5;
1596 octa2
= (LOW_ZERO
& *p
) >> 2;
1597 carry
= (CARRY_ZERO
& *p
);
1598 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1599 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1603 /* Carry in, carry out */
1605 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1606 octa2
= (MID_ONE
& *p
) >> 4;
1607 octa3
= (LOW_ONE
& *p
) >> 1;
1608 carry
= (CARRY_ONE
& *p
);
1609 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1610 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1611 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1615 /* Carry in, no carry out */
1617 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1618 octa2
= (MID_TWO
& *p
) >> 3;
1619 octa3
= (LOW_TWO
& *p
);
1621 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1622 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1623 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1627 error (_("Internal error in octal conversion;"));
1631 cycle
= cycle
% BITS_IN_OCTAL
;
1637 /* Possibly negate the integer represented by BYTES. It contains LEN
1638 bytes in the specified byte order. If the integer is negative,
1639 copy it into OUT_VEC, negate it, and return true. Otherwise, do
1640 nothing and return false. */
1643 maybe_negate_by_bytes (const gdb_byte
*bytes
, unsigned len
,
1644 enum bfd_endian byte_order
,
1645 gdb::byte_vector
*out_vec
)
1648 gdb_assert (len
> 0);
1649 if (byte_order
== BFD_ENDIAN_BIG
)
1650 sign_byte
= bytes
[0];
1652 sign_byte
= bytes
[len
- 1];
1653 if ((sign_byte
& 0x80) == 0)
1656 out_vec
->resize (len
);
1658 /* Compute -x == 1 + ~x. */
1659 if (byte_order
== BFD_ENDIAN_LITTLE
)
1662 for (unsigned i
= 0; i
< len
; ++i
)
1664 unsigned tem
= (0xff & ~bytes
[i
]) + carry
;
1665 (*out_vec
)[i
] = tem
& 0xff;
1672 for (unsigned i
= len
; i
> 0; --i
)
1674 unsigned tem
= (0xff & ~bytes
[i
- 1]) + carry
;
1675 (*out_vec
)[i
- 1] = tem
& 0xff;
1683 /* VALADDR points to an integer of LEN bytes.
1684 Print it in decimal on stream or format it in buf. */
1687 print_decimal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1688 unsigned len
, bool is_signed
,
1689 enum bfd_endian byte_order
)
1692 #define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */
1693 #define CARRY_LEFT( x ) ((x) % TEN)
1694 #define SHIFT( x ) ((x) << 4)
1695 #define LOW_NIBBLE( x ) ( (x) & 0x00F)
1696 #define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4)
1701 int i
, j
, decimal_digits
;
1705 gdb::byte_vector negated_bytes
;
1707 && maybe_negate_by_bytes (valaddr
, len
, byte_order
, &negated_bytes
))
1709 gdb_puts ("-", stream
);
1710 valaddr
= negated_bytes
.data ();
1713 /* Base-ten number is less than twice as many digits
1714 as the base 16 number, which is 2 digits per byte. */
1716 decimal_len
= len
* 2 * 2;
1717 std::vector
<unsigned char> digits (decimal_len
, 0);
1719 /* Ok, we have an unknown number of bytes of data to be printed in
1722 * Given a hex number (in nibbles) as XYZ, we start by taking X and
1723 * decimalizing it as "x1 x2" in two decimal nibbles. Then we multiply
1724 * the nibbles by 16, add Y and re-decimalize. Repeat with Z.
1726 * The trick is that "digits" holds a base-10 number, but sometimes
1727 * the individual digits are > 10.
1729 * Outer loop is per nibble (hex digit) of input, from MSD end to
1732 decimal_digits
= 0; /* Number of decimal digits so far */
1733 p
= (byte_order
== BFD_ENDIAN_BIG
) ? valaddr
: valaddr
+ len
- 1;
1735 while ((byte_order
== BFD_ENDIAN_BIG
) ? (p
< valaddr
+ len
) : (p
>= valaddr
))
1738 * Multiply current base-ten number by 16 in place.
1739 * Each digit was between 0 and 9, now is between
1742 for (j
= 0; j
< decimal_digits
; j
++)
1744 digits
[j
] = SHIFT (digits
[j
]);
1747 /* Take the next nibble off the input and add it to what
1748 * we've got in the LSB position. Bottom 'digit' is now
1749 * between 0 and 159.
1751 * "flip" is used to run this loop twice for each byte.
1755 /* Take top nibble. */
1757 digits
[0] += HIGH_NIBBLE (*p
);
1762 /* Take low nibble and bump our pointer "p". */
1764 digits
[0] += LOW_NIBBLE (*p
);
1765 if (byte_order
== BFD_ENDIAN_BIG
)
1772 /* Re-decimalize. We have to do this often enough
1773 * that we don't overflow, but once per nibble is
1774 * overkill. Easier this way, though. Note that the
1775 * carry is often larger than 10 (e.g. max initial
1776 * carry out of lowest nibble is 15, could bubble all
1777 * the way up greater than 10). So we have to do
1778 * the carrying beyond the last current digit.
1781 for (j
= 0; j
< decimal_len
- 1; j
++)
1785 /* "/" won't handle an unsigned char with
1786 * a value that if signed would be negative.
1787 * So extend to longword int via "dummy".
1790 carry
= CARRY_OUT (dummy
);
1791 digits
[j
] = CARRY_LEFT (dummy
);
1793 if (j
>= decimal_digits
&& carry
== 0)
1796 * All higher digits are 0 and we
1797 * no longer have a carry.
1799 * Note: "j" is 0-based, "decimal_digits" is
1802 decimal_digits
= j
+ 1;
1808 /* Ok, now "digits" is the decimal representation, with
1809 the "decimal_digits" actual digits. Print! */
1811 for (i
= decimal_digits
- 1; i
> 0 && digits
[i
] == 0; --i
)
1816 gdb_printf (stream
, "%1d", digits
[i
]);
1820 /* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */
1823 print_hex_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1824 unsigned len
, enum bfd_endian byte_order
,
1829 gdb_puts ("0x", stream
);
1830 if (byte_order
== BFD_ENDIAN_BIG
)
1836 /* Strip leading 0 bytes, but be sure to leave at least a
1837 single byte at the end. */
1838 for (; p
< valaddr
+ len
- 1 && !*p
; ++p
)
1842 const gdb_byte
*first
= p
;
1847 /* When not zero-padding, use a different format for the
1848 very first byte printed. */
1849 if (!zero_pad
&& p
== first
)
1850 gdb_printf (stream
, "%x", *p
);
1852 gdb_printf (stream
, "%02x", *p
);
1857 p
= valaddr
+ len
- 1;
1861 /* Strip leading 0 bytes, but be sure to leave at least a
1862 single byte at the end. */
1863 for (; p
>= valaddr
+ 1 && !*p
; --p
)
1867 const gdb_byte
*first
= p
;
1872 /* When not zero-padding, use a different format for the
1873 very first byte printed. */
1874 if (!zero_pad
&& p
== first
)
1875 gdb_printf (stream
, "%x", *p
);
1877 gdb_printf (stream
, "%02x", *p
);
1882 /* Print function pointer with inferior address ADDRESS onto stdio
1886 print_function_pointer_address (const struct value_print_options
*options
,
1887 struct gdbarch
*gdbarch
,
1889 struct ui_file
*stream
)
1891 CORE_ADDR func_addr
= gdbarch_convert_from_func_ptr_addr
1892 (gdbarch
, address
, current_inferior ()->top_target ());
1894 /* If the function pointer is represented by a description, print
1895 the address of the description. */
1896 if (options
->addressprint
&& func_addr
!= address
)
1898 gdb_puts ("@", stream
);
1899 gdb_puts (paddress (gdbarch
, address
), stream
);
1900 gdb_puts (": ", stream
);
1902 print_address_demangle (options
, gdbarch
, func_addr
, stream
, demangle
);
1906 /* Print on STREAM using the given OPTIONS the index for the element
1907 at INDEX of an array whose index type is INDEX_TYPE. */
1910 maybe_print_array_index (struct type
*index_type
, LONGEST index
,
1911 struct ui_file
*stream
,
1912 const struct value_print_options
*options
)
1914 if (!options
->print_array_indexes
)
1917 current_language
->print_array_index (index_type
, index
, stream
, options
);
1920 /* See valprint.h. */
1923 value_print_array_elements (struct value
*val
, struct ui_file
*stream
,
1925 const struct value_print_options
*options
,
1928 unsigned int things_printed
= 0;
1930 struct type
*elttype
, *index_type
;
1932 /* Position of the array element we are examining to see
1933 whether it is repeated. */
1935 /* Number of repetitions we have detected so far. */
1937 LONGEST low_bound
, high_bound
;
1939 struct type
*type
= check_typedef (value_type (val
));
1941 elttype
= type
->target_type ();
1942 eltlen
= type_length_units (check_typedef (elttype
));
1943 index_type
= type
->index_type ();
1944 if (index_type
->code () == TYPE_CODE_RANGE
)
1945 index_type
= index_type
->target_type ();
1947 if (get_array_bounds (type
, &low_bound
, &high_bound
))
1949 /* The array length should normally be HIGH_BOUND - LOW_BOUND +
1950 1. But we have to be a little extra careful, because some
1951 languages such as Ada allow LOW_BOUND to be greater than
1952 HIGH_BOUND for empty arrays. In that situation, the array
1953 length is just zero, not negative! */
1954 if (low_bound
> high_bound
)
1957 len
= high_bound
- low_bound
+ 1;
1961 warning (_("unable to get bounds of array, assuming null array"));
1966 annotate_array_section_begin (i
, elttype
);
1968 for (; i
< len
&& things_printed
< options
->print_max
; i
++)
1970 scoped_value_mark free_values
;
1974 if (options
->prettyformat_arrays
)
1976 gdb_printf (stream
, ",\n");
1977 print_spaces (2 + 2 * recurse
, stream
);
1980 gdb_printf (stream
, ", ");
1982 else if (options
->prettyformat_arrays
)
1984 gdb_printf (stream
, "\n");
1985 print_spaces (2 + 2 * recurse
, stream
);
1987 stream
->wrap_here (2 + 2 * recurse
);
1988 maybe_print_array_index (index_type
, i
+ low_bound
,
1993 /* Only check for reps if repeat_count_threshold is not set to
1994 UINT_MAX (unlimited). */
1995 if (options
->repeat_count_threshold
< UINT_MAX
)
1998 && value_contents_eq (val
, i
* eltlen
,
2007 struct value
*element
= value_from_component (val
, elttype
, eltlen
* i
);
2008 common_val_print (element
, stream
, recurse
+ 1, options
,
2011 if (reps
> options
->repeat_count_threshold
)
2013 annotate_elt_rep (reps
);
2014 gdb_printf (stream
, " %p[<repeats %u times>%p]",
2015 metadata_style
.style ().ptr (), reps
, nullptr);
2016 annotate_elt_rep_end ();
2019 things_printed
+= options
->repeat_count_threshold
;
2027 annotate_array_section_end ();
2029 gdb_printf (stream
, "...");
2030 if (options
->prettyformat_arrays
)
2032 gdb_printf (stream
, "\n");
2033 print_spaces (2 * recurse
, stream
);
2037 /* Return true if print_wchar can display W without resorting to a
2038 numeric escape, false otherwise. */
2041 wchar_printable (gdb_wchar_t w
)
2043 return (gdb_iswprint (w
)
2044 || w
== LCST ('\a') || w
== LCST ('\b')
2045 || w
== LCST ('\f') || w
== LCST ('\n')
2046 || w
== LCST ('\r') || w
== LCST ('\t')
2047 || w
== LCST ('\v'));
2050 /* A helper function that converts the contents of STRING to wide
2051 characters and then appends them to OUTPUT. */
2054 append_string_as_wide (const char *string
,
2055 struct obstack
*output
)
2057 for (; *string
; ++string
)
2059 gdb_wchar_t w
= gdb_btowc (*string
);
2060 obstack_grow (output
, &w
, sizeof (gdb_wchar_t
));
2064 /* Print a wide character W to OUTPUT. ORIG is a pointer to the
2065 original (target) bytes representing the character, ORIG_LEN is the
2066 number of valid bytes. WIDTH is the number of bytes in a base
2067 characters of the type. OUTPUT is an obstack to which wide
2068 characters are emitted. QUOTER is a (narrow) character indicating
2069 the style of quotes surrounding the character to be printed.
2070 NEED_ESCAPE is an in/out flag which is used to track numeric
2071 escapes across calls. */
2074 print_wchar (gdb_wint_t w
, const gdb_byte
*orig
,
2075 int orig_len
, int width
,
2076 enum bfd_endian byte_order
,
2077 struct obstack
*output
,
2078 int quoter
, bool *need_escapep
)
2080 bool need_escape
= *need_escapep
;
2082 *need_escapep
= false;
2084 /* iswprint implementation on Windows returns 1 for tab character.
2085 In order to avoid different printout on this host, we explicitly
2086 use wchar_printable function. */
2090 obstack_grow_wstr (output
, LCST ("\\a"));
2093 obstack_grow_wstr (output
, LCST ("\\b"));
2096 obstack_grow_wstr (output
, LCST ("\\f"));
2099 obstack_grow_wstr (output
, LCST ("\\n"));
2102 obstack_grow_wstr (output
, LCST ("\\r"));
2105 obstack_grow_wstr (output
, LCST ("\\t"));
2108 obstack_grow_wstr (output
, LCST ("\\v"));
2112 if (wchar_printable (w
) && (!need_escape
|| (!gdb_iswdigit (w
)
2114 && w
!= LCST ('9'))))
2116 gdb_wchar_t wchar
= w
;
2118 if (w
== gdb_btowc (quoter
) || w
== LCST ('\\'))
2119 obstack_grow_wstr (output
, LCST ("\\"));
2120 obstack_grow (output
, &wchar
, sizeof (gdb_wchar_t
));
2126 for (i
= 0; i
+ width
<= orig_len
; i
+= width
)
2131 value
= extract_unsigned_integer (&orig
[i
], width
,
2133 /* If the value fits in 3 octal digits, print it that
2134 way. Otherwise, print it as a hex escape. */
2136 xsnprintf (octal
, sizeof (octal
), "\\%.3o",
2137 (int) (value
& 0777));
2139 xsnprintf (octal
, sizeof (octal
), "\\x%lx", (long) value
);
2140 append_string_as_wide (octal
, output
);
2142 /* If we somehow have extra bytes, print them now. */
2143 while (i
< orig_len
)
2147 xsnprintf (octal
, sizeof (octal
), "\\%.3o", orig
[i
] & 0xff);
2148 append_string_as_wide (octal
, output
);
2152 *need_escapep
= true;
2159 /* Print the character C on STREAM as part of the contents of a
2160 literal string whose delimiter is QUOTER. ENCODING names the
2164 generic_emit_char (int c
, struct type
*type
, struct ui_file
*stream
,
2165 int quoter
, const char *encoding
)
2167 enum bfd_endian byte_order
2168 = type_byte_order (type
);
2170 bool need_escape
= false;
2172 c_buf
= (gdb_byte
*) alloca (type
->length ());
2173 pack_long (c_buf
, type
, c
);
2175 wchar_iterator
iter (c_buf
, type
->length (), encoding
, type
->length ());
2177 /* This holds the printable form of the wchar_t data. */
2178 auto_obstack wchar_buf
;
2184 const gdb_byte
*buf
;
2186 int print_escape
= 1;
2187 enum wchar_iterate_result result
;
2189 num_chars
= iter
.iterate (&result
, &chars
, &buf
, &buflen
);
2194 /* If all characters are printable, print them. Otherwise,
2195 we're going to have to print an escape sequence. We
2196 check all characters because we want to print the target
2197 bytes in the escape sequence, and we don't know character
2198 boundaries there. */
2202 for (i
= 0; i
< num_chars
; ++i
)
2203 if (!wchar_printable (chars
[i
]))
2211 for (i
= 0; i
< num_chars
; ++i
)
2212 print_wchar (chars
[i
], buf
, buflen
,
2213 type
->length (), byte_order
,
2214 &wchar_buf
, quoter
, &need_escape
);
2218 /* This handles the NUM_CHARS == 0 case as well. */
2220 print_wchar (gdb_WEOF
, buf
, buflen
, type
->length (),
2221 byte_order
, &wchar_buf
, quoter
, &need_escape
);
2224 /* The output in the host encoding. */
2225 auto_obstack output
;
2227 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2228 (gdb_byte
*) obstack_base (&wchar_buf
),
2229 obstack_object_size (&wchar_buf
),
2230 sizeof (gdb_wchar_t
), &output
, translit_char
);
2231 obstack_1grow (&output
, '\0');
2233 gdb_puts ((const char *) obstack_base (&output
), stream
);
2236 /* Return the repeat count of the next character/byte in ITER,
2237 storing the result in VEC. */
2240 count_next_character (wchar_iterator
*iter
,
2241 std::vector
<converted_character
> *vec
)
2243 struct converted_character
*current
;
2247 struct converted_character tmp
;
2251 = iter
->iterate (&tmp
.result
, &chars
, &tmp
.buf
, &tmp
.buflen
);
2252 if (tmp
.num_chars
> 0)
2254 gdb_assert (tmp
.num_chars
< MAX_WCHARS
);
2255 memcpy (tmp
.chars
, chars
, tmp
.num_chars
* sizeof (gdb_wchar_t
));
2257 vec
->push_back (tmp
);
2260 current
= &vec
->back ();
2262 /* Count repeated characters or bytes. */
2263 current
->repeat_count
= 1;
2264 if (current
->num_chars
== -1)
2272 struct converted_character d
;
2279 /* Get the next character. */
2280 d
.num_chars
= iter
->iterate (&d
.result
, &chars
, &d
.buf
, &d
.buflen
);
2282 /* If a character was successfully converted, save the character
2283 into the converted character. */
2284 if (d
.num_chars
> 0)
2286 gdb_assert (d
.num_chars
< MAX_WCHARS
);
2287 memcpy (d
.chars
, chars
, WCHAR_BUFLEN (d
.num_chars
));
2290 /* Determine if the current character is the same as this
2292 if (d
.num_chars
== current
->num_chars
&& d
.result
== current
->result
)
2294 /* There are two cases to consider:
2296 1) Equality of converted character (num_chars > 0)
2297 2) Equality of non-converted character (num_chars == 0) */
2298 if ((current
->num_chars
> 0
2299 && memcmp (current
->chars
, d
.chars
,
2300 WCHAR_BUFLEN (current
->num_chars
)) == 0)
2301 || (current
->num_chars
== 0
2302 && current
->buflen
== d
.buflen
2303 && memcmp (current
->buf
, d
.buf
, current
->buflen
) == 0))
2304 ++current
->repeat_count
;
2312 /* Push this next converted character onto the result vector. */
2313 repeat
= current
->repeat_count
;
2319 /* Print the characters in CHARS to the OBSTACK. QUOTE_CHAR is the quote
2320 character to use with string output. WIDTH is the size of the output
2321 character type. BYTE_ORDER is the target byte order. OPTIONS
2322 is the user's print options. */
2325 print_converted_chars_to_obstack (struct obstack
*obstack
,
2326 const std::vector
<converted_character
> &chars
,
2327 int quote_char
, int width
,
2328 enum bfd_endian byte_order
,
2329 const struct value_print_options
*options
)
2332 const converted_character
*elem
;
2333 enum {START
, SINGLE
, REPEAT
, INCOMPLETE
, FINISH
} state
, last
;
2334 gdb_wchar_t wide_quote_char
= gdb_btowc (quote_char
);
2335 bool need_escape
= false;
2337 /* Set the start state. */
2339 last
= state
= START
;
2347 /* Nothing to do. */
2354 /* We are outputting a single character
2355 (< options->repeat_count_threshold). */
2359 /* We were outputting some other type of content, so we
2360 must output and a comma and a quote. */
2362 obstack_grow_wstr (obstack
, LCST (", "));
2363 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2365 /* Output the character. */
2366 for (j
= 0; j
< elem
->repeat_count
; ++j
)
2368 if (elem
->result
== wchar_iterate_ok
)
2369 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2370 byte_order
, obstack
, quote_char
, &need_escape
);
2372 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2373 byte_order
, obstack
, quote_char
, &need_escape
);
2382 /* We are outputting a character with a repeat count
2383 greater than options->repeat_count_threshold. */
2387 /* We were outputting a single string. Terminate the
2389 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2392 obstack_grow_wstr (obstack
, LCST (", "));
2394 /* Output the character and repeat string. */
2395 obstack_grow_wstr (obstack
, LCST ("'"));
2396 if (elem
->result
== wchar_iterate_ok
)
2397 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2398 byte_order
, obstack
, quote_char
, &need_escape
);
2400 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2401 byte_order
, obstack
, quote_char
, &need_escape
);
2402 obstack_grow_wstr (obstack
, LCST ("'"));
2403 std::string s
= string_printf (_(" <repeats %u times>"),
2404 elem
->repeat_count
);
2405 for (j
= 0; s
[j
]; ++j
)
2407 gdb_wchar_t w
= gdb_btowc (s
[j
]);
2408 obstack_grow (obstack
, &w
, sizeof (gdb_wchar_t
));
2414 /* We are outputting an incomplete sequence. */
2417 /* If we were outputting a string of SINGLE characters,
2418 terminate the quote. */
2419 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2422 obstack_grow_wstr (obstack
, LCST (", "));
2424 /* Output the incomplete sequence string. */
2425 obstack_grow_wstr (obstack
, LCST ("<incomplete sequence "));
2426 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
, byte_order
,
2427 obstack
, 0, &need_escape
);
2428 obstack_grow_wstr (obstack
, LCST (">"));
2430 /* We do not attempt to output anything after this. */
2435 /* All done. If we were outputting a string of SINGLE
2436 characters, the string must be terminated. Otherwise,
2437 REPEAT and INCOMPLETE are always left properly terminated. */
2439 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2444 /* Get the next element and state. */
2446 if (state
!= FINISH
)
2448 elem
= &chars
[idx
++];
2449 switch (elem
->result
)
2451 case wchar_iterate_ok
:
2452 case wchar_iterate_invalid
:
2453 if (elem
->repeat_count
> options
->repeat_count_threshold
)
2459 case wchar_iterate_incomplete
:
2463 case wchar_iterate_eof
:
2471 /* Print the character string STRING, printing at most LENGTH
2472 characters. LENGTH is -1 if the string is nul terminated. TYPE is
2473 the type of each character. OPTIONS holds the printing options;
2474 printing stops early if the number hits print_max; repeat counts
2475 are printed as appropriate. Print ellipses at the end if we had to
2476 stop before printing LENGTH characters, or if FORCE_ELLIPSES.
2477 QUOTE_CHAR is the character to print at each end of the string. If
2478 C_STYLE_TERMINATOR is true, and the last character is 0, then it is
2482 generic_printstr (struct ui_file
*stream
, struct type
*type
,
2483 const gdb_byte
*string
, unsigned int length
,
2484 const char *encoding
, int force_ellipses
,
2485 int quote_char
, int c_style_terminator
,
2486 const struct value_print_options
*options
)
2488 enum bfd_endian byte_order
= type_byte_order (type
);
2490 int width
= type
->length ();
2492 struct converted_character
*last
;
2496 unsigned long current_char
= 1;
2498 for (i
= 0; current_char
; ++i
)
2501 current_char
= extract_unsigned_integer (string
+ i
* width
,
2507 /* If the string was not truncated due to `set print elements', and
2508 the last byte of it is a null, we don't print that, in
2509 traditional C style. */
2510 if (c_style_terminator
2513 && (extract_unsigned_integer (string
+ (length
- 1) * width
,
2514 width
, byte_order
) == 0))
2519 gdb_printf (stream
, "%c%c", quote_char
, quote_char
);
2523 /* Arrange to iterate over the characters, in wchar_t form. */
2524 wchar_iterator
iter (string
, length
* width
, encoding
, width
);
2525 std::vector
<converted_character
> converted_chars
;
2527 /* Convert characters until the string is over or the maximum
2528 number of printed characters has been reached. */
2530 while (i
< options
->print_max
)
2536 /* Grab the next character and repeat count. */
2537 r
= count_next_character (&iter
, &converted_chars
);
2539 /* If less than zero, the end of the input string was reached. */
2543 /* Otherwise, add the count to the total print count and get
2544 the next character. */
2548 /* Get the last element and determine if the entire string was
2550 last
= &converted_chars
.back ();
2551 finished
= (last
->result
== wchar_iterate_eof
);
2553 /* Ensure that CONVERTED_CHARS is terminated. */
2554 last
->result
= wchar_iterate_eof
;
2556 /* WCHAR_BUF is the obstack we use to represent the string in
2558 auto_obstack wchar_buf
;
2560 /* Print the output string to the obstack. */
2561 print_converted_chars_to_obstack (&wchar_buf
, converted_chars
, quote_char
,
2562 width
, byte_order
, options
);
2564 if (force_ellipses
|| !finished
)
2565 obstack_grow_wstr (&wchar_buf
, LCST ("..."));
2567 /* OUTPUT is where we collect `char's for printing. */
2568 auto_obstack output
;
2570 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2571 (gdb_byte
*) obstack_base (&wchar_buf
),
2572 obstack_object_size (&wchar_buf
),
2573 sizeof (gdb_wchar_t
), &output
, translit_char
);
2574 obstack_1grow (&output
, '\0');
2576 gdb_puts ((const char *) obstack_base (&output
), stream
);
2579 /* Print a string from the inferior, starting at ADDR and printing up to LEN
2580 characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing
2581 stops at the first null byte, otherwise printing proceeds (including null
2582 bytes) until either print_max or LEN characters have been printed,
2583 whichever is smaller. ENCODING is the name of the string's
2584 encoding. It can be NULL, in which case the target encoding is
2588 val_print_string (struct type
*elttype
, const char *encoding
,
2589 CORE_ADDR addr
, int len
,
2590 struct ui_file
*stream
,
2591 const struct value_print_options
*options
)
2593 int force_ellipsis
= 0; /* Force ellipsis to be printed if nonzero. */
2594 int err
; /* Non-zero if we got a bad read. */
2595 int found_nul
; /* Non-zero if we found the nul char. */
2596 unsigned int fetchlimit
; /* Maximum number of chars to print. */
2598 gdb::unique_xmalloc_ptr
<gdb_byte
> buffer
; /* Dynamically growable fetch buffer. */
2599 struct gdbarch
*gdbarch
= elttype
->arch ();
2600 enum bfd_endian byte_order
= type_byte_order (elttype
);
2601 int width
= elttype
->length ();
2603 /* First we need to figure out the limit on the number of characters we are
2604 going to attempt to fetch and print. This is actually pretty simple. If
2605 LEN >= zero, then the limit is the minimum of LEN and print_max. If
2606 LEN is -1, then the limit is print_max. This is true regardless of
2607 whether print_max is zero, UINT_MAX (unlimited), or something in between,
2608 because finding the null byte (or available memory) is what actually
2609 limits the fetch. */
2611 fetchlimit
= (len
== -1 ? options
->print_max
: std::min ((unsigned) len
,
2612 options
->print_max
));
2614 err
= target_read_string (addr
, len
, width
, fetchlimit
,
2615 &buffer
, &bytes_read
);
2619 /* We now have either successfully filled the buffer to fetchlimit,
2620 or terminated early due to an error or finding a null char when
2623 /* Determine found_nul by looking at the last character read. */
2625 if (bytes_read
>= width
)
2626 found_nul
= extract_unsigned_integer (buffer
.get () + bytes_read
- width
,
2627 width
, byte_order
) == 0;
2628 if (len
== -1 && !found_nul
)
2632 /* We didn't find a NUL terminator we were looking for. Attempt
2633 to peek at the next character. If not successful, or it is not
2634 a null byte, then force ellipsis to be printed. */
2636 peekbuf
= (gdb_byte
*) alloca (width
);
2638 if (target_read_memory (addr
, peekbuf
, width
) == 0
2639 && extract_unsigned_integer (peekbuf
, width
, byte_order
) != 0)
2642 else if ((len
>= 0 && err
!= 0) || (len
> bytes_read
/ width
))
2644 /* Getting an error when we have a requested length, or fetching less
2645 than the number of characters actually requested, always make us
2650 /* If we get an error before fetching anything, don't print a string.
2651 But if we fetch something and then get an error, print the string
2652 and then the error message. */
2653 if (err
== 0 || bytes_read
> 0)
2654 current_language
->printstr (stream
, elttype
, buffer
.get (),
2656 encoding
, force_ellipsis
, options
);
2660 std::string str
= memory_error_message (TARGET_XFER_E_IO
, gdbarch
, addr
);
2662 gdb_printf (stream
, _("<error: %ps>"),
2663 styled_string (metadata_style
.style (),
2667 return (bytes_read
/ width
);
2670 /* Handle 'show print max-depth'. */
2673 show_print_max_depth (struct ui_file
*file
, int from_tty
,
2674 struct cmd_list_element
*c
, const char *value
)
2676 gdb_printf (file
, _("Maximum print depth is %s.\n"), value
);
2680 /* The 'set input-radix' command writes to this auxiliary variable.
2681 If the requested radix is valid, INPUT_RADIX is updated; otherwise,
2682 it is left unchanged. */
2684 static unsigned input_radix_1
= 10;
2686 /* Validate an input or output radix setting, and make sure the user
2687 knows what they really did here. Radix setting is confusing, e.g.
2688 setting the input radix to "10" never changes it! */
2691 set_input_radix (const char *args
, int from_tty
, struct cmd_list_element
*c
)
2693 set_input_radix_1 (from_tty
, input_radix_1
);
2697 set_input_radix_1 (int from_tty
, unsigned radix
)
2699 /* We don't currently disallow any input radix except 0 or 1, which don't
2700 make any mathematical sense. In theory, we can deal with any input
2701 radix greater than 1, even if we don't have unique digits for every
2702 value from 0 to radix-1, but in practice we lose on large radix values.
2703 We should either fix the lossage or restrict the radix range more.
2708 input_radix_1
= input_radix
;
2709 error (_("Nonsense input radix ``decimal %u''; input radix unchanged."),
2712 input_radix_1
= input_radix
= radix
;
2715 gdb_printf (_("Input radix now set to "
2716 "decimal %u, hex %x, octal %o.\n"),
2717 radix
, radix
, radix
);
2721 /* The 'set output-radix' command writes to this auxiliary variable.
2722 If the requested radix is valid, OUTPUT_RADIX is updated,
2723 otherwise, it is left unchanged. */
2725 static unsigned output_radix_1
= 10;
2728 set_output_radix (const char *args
, int from_tty
, struct cmd_list_element
*c
)
2730 set_output_radix_1 (from_tty
, output_radix_1
);
2734 set_output_radix_1 (int from_tty
, unsigned radix
)
2736 /* Validate the radix and disallow ones that we aren't prepared to
2737 handle correctly, leaving the radix unchanged. */
2741 user_print_options
.output_format
= 'x'; /* hex */
2744 user_print_options
.output_format
= 0; /* decimal */
2747 user_print_options
.output_format
= 'o'; /* octal */
2750 output_radix_1
= output_radix
;
2751 error (_("Unsupported output radix ``decimal %u''; "
2752 "output radix unchanged."),
2755 output_radix_1
= output_radix
= radix
;
2758 gdb_printf (_("Output radix now set to "
2759 "decimal %u, hex %x, octal %o.\n"),
2760 radix
, radix
, radix
);
2764 /* Set both the input and output radix at once. Try to set the output radix
2765 first, since it has the most restrictive range. An radix that is valid as
2766 an output radix is also valid as an input radix.
2768 It may be useful to have an unusual input radix. If the user wishes to
2769 set an input radix that is not valid as an output radix, he needs to use
2770 the 'set input-radix' command. */
2773 set_radix (const char *arg
, int from_tty
)
2777 radix
= (arg
== NULL
) ? 10 : parse_and_eval_long (arg
);
2778 set_output_radix_1 (0, radix
);
2779 set_input_radix_1 (0, radix
);
2782 gdb_printf (_("Input and output radices now set to "
2783 "decimal %u, hex %x, octal %o.\n"),
2784 radix
, radix
, radix
);
2788 /* Show both the input and output radices. */
2791 show_radix (const char *arg
, int from_tty
)
2795 if (input_radix
== output_radix
)
2797 gdb_printf (_("Input and output radices set to "
2798 "decimal %u, hex %x, octal %o.\n"),
2799 input_radix
, input_radix
, input_radix
);
2803 gdb_printf (_("Input radix set to decimal "
2804 "%u, hex %x, octal %o.\n"),
2805 input_radix
, input_radix
, input_radix
);
2806 gdb_printf (_("Output radix set to decimal "
2807 "%u, hex %x, octal %o.\n"),
2808 output_radix
, output_radix
, output_radix
);
2814 /* Controls printing of vtbl's. */
2816 show_vtblprint (struct ui_file
*file
, int from_tty
,
2817 struct cmd_list_element
*c
, const char *value
)
2819 gdb_printf (file
, _("\
2820 Printing of C++ virtual function tables is %s.\n"),
2824 /* Controls looking up an object's derived type using what we find in
2827 show_objectprint (struct ui_file
*file
, int from_tty
,
2828 struct cmd_list_element
*c
,
2831 gdb_printf (file
, _("\
2832 Printing of object's derived type based on vtable info is %s.\n"),
2837 show_static_field_print (struct ui_file
*file
, int from_tty
,
2838 struct cmd_list_element
*c
,
2842 _("Printing of C++ static members is %s.\n"),
2848 /* A couple typedefs to make writing the options a bit more
2850 using boolean_option_def
2851 = gdb::option::boolean_option_def
<value_print_options
>;
2852 using uinteger_option_def
2853 = gdb::option::uinteger_option_def
<value_print_options
>;
2854 using zuinteger_unlimited_option_def
2855 = gdb::option::zuinteger_unlimited_option_def
<value_print_options
>;
2857 /* Definitions of options for the "print" and "compile print"
2859 static const gdb::option::option_def value_print_option_defs
[] = {
2861 boolean_option_def
{
2863 [] (value_print_options
*opt
) { return &opt
->addressprint
; },
2864 show_addressprint
, /* show_cmd_cb */
2865 N_("Set printing of addresses."),
2866 N_("Show printing of addresses."),
2867 NULL
, /* help_doc */
2870 boolean_option_def
{
2872 [] (value_print_options
*opt
) { return &opt
->prettyformat_arrays
; },
2873 show_prettyformat_arrays
, /* show_cmd_cb */
2874 N_("Set pretty formatting of arrays."),
2875 N_("Show pretty formatting of arrays."),
2876 NULL
, /* help_doc */
2879 boolean_option_def
{
2881 [] (value_print_options
*opt
) { return &opt
->print_array_indexes
; },
2882 show_print_array_indexes
, /* show_cmd_cb */
2883 N_("Set printing of array indexes."),
2884 N_("Show printing of array indexes."),
2885 NULL
, /* help_doc */
2888 boolean_option_def
{
2890 [] (value_print_options
*opt
) { return &opt
->nibblesprint
; },
2891 show_nibbles
, /* show_cmd_cb */
2892 N_("Set whether to print binary values in groups of four bits."),
2893 N_("Show whether to print binary values in groups of four bits."),
2894 NULL
, /* help_doc */
2897 uinteger_option_def
{
2899 [] (value_print_options
*opt
) { return &opt
->print_max
; },
2900 show_print_max
, /* show_cmd_cb */
2901 N_("Set limit on string chars or array elements to print."),
2902 N_("Show limit on string chars or array elements to print."),
2903 N_("\"unlimited\" causes there to be no limit."),
2906 zuinteger_unlimited_option_def
{
2908 [] (value_print_options
*opt
) { return &opt
->max_depth
; },
2909 show_print_max_depth
, /* show_cmd_cb */
2910 N_("Set maximum print depth for nested structures, unions and arrays."),
2911 N_("Show maximum print depth for nested structures, unions, and arrays."),
2912 N_("When structures, unions, or arrays are nested beyond this depth then they\n\
2913 will be replaced with either '{...}' or '(...)' depending on the language.\n\
2914 Use \"unlimited\" to print the complete structure.")
2917 boolean_option_def
{
2918 "memory-tag-violations",
2919 [] (value_print_options
*opt
) { return &opt
->memory_tag_violations
; },
2920 show_memory_tag_violations
, /* show_cmd_cb */
2921 N_("Set printing of memory tag violations for pointers."),
2922 N_("Show printing of memory tag violations for pointers."),
2923 N_("Issue a warning when the printed value is a pointer\n\
2924 whose logical tag doesn't match the allocation tag of the memory\n\
2925 location it points to."),
2928 boolean_option_def
{
2930 [] (value_print_options
*opt
) { return &opt
->stop_print_at_null
; },
2931 show_stop_print_at_null
, /* show_cmd_cb */
2932 N_("Set printing of char arrays to stop at first null char."),
2933 N_("Show printing of char arrays to stop at first null char."),
2934 NULL
, /* help_doc */
2937 boolean_option_def
{
2939 [] (value_print_options
*opt
) { return &opt
->objectprint
; },
2940 show_objectprint
, /* show_cmd_cb */
2941 _("Set printing of C++ virtual function tables."),
2942 _("Show printing of C++ virtual function tables."),
2943 NULL
, /* help_doc */
2946 boolean_option_def
{
2948 [] (value_print_options
*opt
) { return &opt
->prettyformat_structs
; },
2949 show_prettyformat_structs
, /* show_cmd_cb */
2950 N_("Set pretty formatting of structures."),
2951 N_("Show pretty formatting of structures."),
2952 NULL
, /* help_doc */
2955 boolean_option_def
{
2957 [] (value_print_options
*opt
) { return &opt
->raw
; },
2958 NULL
, /* show_cmd_cb */
2959 N_("Set whether to print values in raw form."),
2960 N_("Show whether to print values in raw form."),
2961 N_("If set, values are printed in raw form, bypassing any\n\
2962 pretty-printers for that value.")
2965 uinteger_option_def
{
2967 [] (value_print_options
*opt
) { return &opt
->repeat_count_threshold
; },
2968 show_repeat_count_threshold
, /* show_cmd_cb */
2969 N_("Set threshold for repeated print elements."),
2970 N_("Show threshold for repeated print elements."),
2971 N_("\"unlimited\" causes all elements to be individually printed."),
2974 boolean_option_def
{
2976 [] (value_print_options
*opt
) { return &opt
->static_field_print
; },
2977 show_static_field_print
, /* show_cmd_cb */
2978 N_("Set printing of C++ static members."),
2979 N_("Show printing of C++ static members."),
2980 NULL
, /* help_doc */
2983 boolean_option_def
{
2985 [] (value_print_options
*opt
) { return &opt
->symbol_print
; },
2986 show_symbol_print
, /* show_cmd_cb */
2987 N_("Set printing of symbol names when printing pointers."),
2988 N_("Show printing of symbol names when printing pointers."),
2989 NULL
, /* help_doc */
2992 boolean_option_def
{
2994 [] (value_print_options
*opt
) { return &opt
->unionprint
; },
2995 show_unionprint
, /* show_cmd_cb */
2996 N_("Set printing of unions interior to structures."),
2997 N_("Show printing of unions interior to structures."),
2998 NULL
, /* help_doc */
3001 boolean_option_def
{
3003 [] (value_print_options
*opt
) { return &opt
->vtblprint
; },
3004 show_vtblprint
, /* show_cmd_cb */
3005 N_("Set printing of C++ virtual function tables."),
3006 N_("Show printing of C++ virtual function tables."),
3007 NULL
, /* help_doc */
3011 /* See valprint.h. */
3013 gdb::option::option_def_group
3014 make_value_print_options_def_group (value_print_options
*opts
)
3016 return {{value_print_option_defs
}, opts
};
3021 /* Test printing of TYPE_CODE_FLAGS values. */
3024 test_print_flags (gdbarch
*arch
)
3026 type
*flags_type
= arch_flags_type (arch
, "test_type", 32);
3027 type
*field_type
= builtin_type (arch
)->builtin_uint32
;
3030 Fields: CCCB BAAA */
3031 append_flags_type_field (flags_type
, 0, 3, field_type
, "A");
3032 append_flags_type_field (flags_type
, 3, 2, field_type
, "B");
3033 append_flags_type_field (flags_type
, 5, 3, field_type
, "C");
3035 value
*val
= allocate_value (flags_type
);
3036 gdb_byte
*contents
= value_contents_writeable (val
).data ();
3037 store_unsigned_integer (contents
, 4, gdbarch_byte_order (arch
), 0xaa);
3040 val_print_type_code_flags (flags_type
, val
, 0, &out
);
3041 SELF_CHECK (out
.string () == "[ A=2 B=1 C=5 ]");
3046 void _initialize_valprint ();
3048 _initialize_valprint ()
3051 selftests::register_test_foreach_arch ("print-flags", test_print_flags
);
3054 set_show_commands setshow_print_cmds
3055 = add_setshow_prefix_cmd ("print", no_class
,
3056 _("Generic command for setting how things print."),
3057 _("Generic command for showing print settings."),
3058 &setprintlist
, &showprintlist
,
3059 &setlist
, &showlist
);
3060 add_alias_cmd ("p", setshow_print_cmds
.set
, no_class
, 1, &setlist
);
3061 /* Prefer set print to set prompt. */
3062 add_alias_cmd ("pr", setshow_print_cmds
.set
, no_class
, 1, &setlist
);
3063 add_alias_cmd ("p", setshow_print_cmds
.show
, no_class
, 1, &showlist
);
3064 add_alias_cmd ("pr", setshow_print_cmds
.show
, no_class
, 1, &showlist
);
3066 set_show_commands setshow_print_raw_cmds
3067 = add_setshow_prefix_cmd
3069 _("Generic command for setting what things to print in \"raw\" mode."),
3070 _("Generic command for showing \"print raw\" settings."),
3071 &setprintrawlist
, &showprintrawlist
, &setprintlist
, &showprintlist
);
3072 deprecate_cmd (setshow_print_raw_cmds
.set
, nullptr);
3073 deprecate_cmd (setshow_print_raw_cmds
.show
, nullptr);
3075 gdb::option::add_setshow_cmds_for_options
3076 (class_support
, &user_print_options
, value_print_option_defs
,
3077 &setprintlist
, &showprintlist
);
3079 add_setshow_zuinteger_cmd ("input-radix", class_support
, &input_radix_1
,
3081 Set default input radix for entering numbers."), _("\
3082 Show default input radix for entering numbers."), NULL
,
3085 &setlist
, &showlist
);
3087 add_setshow_zuinteger_cmd ("output-radix", class_support
, &output_radix_1
,
3089 Set default output radix for printing of values."), _("\
3090 Show default output radix for printing of values."), NULL
,
3093 &setlist
, &showlist
);
3095 /* The "set radix" and "show radix" commands are special in that
3096 they are like normal set and show commands but allow two normally
3097 independent variables to be either set or shown with a single
3098 command. So the usual deprecated_add_set_cmd() and [deleted]
3099 add_show_from_set() commands aren't really appropriate. */
3100 /* FIXME: i18n: With the new add_setshow_integer command, that is no
3101 longer true - show can display anything. */
3102 add_cmd ("radix", class_support
, set_radix
, _("\
3103 Set default input and output number radices.\n\
3104 Use 'set input-radix' or 'set output-radix' to independently set each.\n\
3105 Without an argument, sets both radices back to the default value of 10."),
3107 add_cmd ("radix", class_support
, show_radix
, _("\
3108 Show the default input and output number radices.\n\
3109 Use 'show input-radix' or 'show output-radix' to independently show each."),