1 /* Print values for GDB, the GNU debugger.
3 Copyright (C) 1986-2020 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 "gdbsupport/byte-vector.h"
39 #include "cli/cli-option.h"
41 #include "cli/cli-style.h"
42 #include "count-one-bits.h"
44 /* Maximum number of wchars returned from wchar_iterate. */
47 /* A convenience macro to compute the size of a wchar_t buffer containing X
49 #define WCHAR_BUFLEN(X) ((X) * sizeof (gdb_wchar_t))
51 /* Character buffer size saved while iterating over wchars. */
52 #define WCHAR_BUFLEN_MAX WCHAR_BUFLEN (MAX_WCHARS)
54 /* A structure to encapsulate state information from iterated
55 character conversions. */
56 struct converted_character
58 /* The number of characters converted. */
61 /* The result of the conversion. See charset.h for more. */
62 enum wchar_iterate_result result
;
64 /* The (saved) converted character(s). */
65 gdb_wchar_t chars
[WCHAR_BUFLEN_MAX
];
67 /* The first converted target byte. */
70 /* The number of bytes converted. */
73 /* How many times this character(s) is repeated. */
77 /* Command lists for set/show print raw. */
78 struct cmd_list_element
*setprintrawlist
;
79 struct cmd_list_element
*showprintrawlist
;
81 /* Prototypes for local functions */
83 static int partial_memory_read (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
84 int len
, int *errptr
);
86 static void set_input_radix_1 (int, unsigned);
88 static void set_output_radix_1 (int, unsigned);
90 static void val_print_type_code_flags (struct type
*type
,
91 struct value
*original_value
,
93 struct ui_file
*stream
);
95 #define PRINT_MAX_DEFAULT 200 /* Start print_max off at this value. */
96 #define PRINT_MAX_DEPTH_DEFAULT 20 /* Start print_max_depth off at this value. */
98 struct value_print_options user_print_options
=
100 Val_prettyformat_default
, /* prettyformat */
101 0, /* prettyformat_arrays */
102 0, /* prettyformat_structs */
105 1, /* addressprint */
107 PRINT_MAX_DEFAULT
, /* print_max */
108 10, /* repeat_count_threshold */
109 0, /* output_format */
111 0, /* stop_print_at_null */
112 0, /* print_array_indexes */
114 1, /* static_field_print */
115 1, /* pascal_static_field_print */
118 1, /* symbol_print */
119 PRINT_MAX_DEPTH_DEFAULT
, /* max_depth */
123 /* Initialize *OPTS to be a copy of the user print options. */
125 get_user_print_options (struct value_print_options
*opts
)
127 *opts
= user_print_options
;
130 /* Initialize *OPTS to be a copy of the user print options, but with
131 pretty-formatting disabled. */
133 get_no_prettyformat_print_options (struct value_print_options
*opts
)
135 *opts
= user_print_options
;
136 opts
->prettyformat
= Val_no_prettyformat
;
139 /* Initialize *OPTS to be a copy of the user print options, but using
140 FORMAT as the formatting option. */
142 get_formatted_print_options (struct value_print_options
*opts
,
145 *opts
= user_print_options
;
146 opts
->format
= format
;
150 show_print_max (struct ui_file
*file
, int from_tty
,
151 struct cmd_list_element
*c
, const char *value
)
153 fprintf_filtered (file
,
154 _("Limit on string chars or array "
155 "elements to print is %s.\n"),
160 /* Default input and output radixes, and output format letter. */
162 unsigned input_radix
= 10;
164 show_input_radix (struct ui_file
*file
, int from_tty
,
165 struct cmd_list_element
*c
, const char *value
)
167 fprintf_filtered (file
,
168 _("Default input radix for entering numbers is %s.\n"),
172 unsigned output_radix
= 10;
174 show_output_radix (struct ui_file
*file
, int from_tty
,
175 struct cmd_list_element
*c
, const char *value
)
177 fprintf_filtered (file
,
178 _("Default output radix for printing of values is %s.\n"),
182 /* By default we print arrays without printing the index of each element in
183 the array. This behavior can be changed by setting PRINT_ARRAY_INDEXES. */
186 show_print_array_indexes (struct ui_file
*file
, int from_tty
,
187 struct cmd_list_element
*c
, const char *value
)
189 fprintf_filtered (file
, _("Printing of array indexes is %s.\n"), value
);
192 /* Print repeat counts if there are more than this many repetitions of an
193 element in an array. Referenced by the low level language dependent
197 show_repeat_count_threshold (struct ui_file
*file
, int from_tty
,
198 struct cmd_list_element
*c
, const char *value
)
200 fprintf_filtered (file
, _("Threshold for repeated print elements is %s.\n"),
204 /* If nonzero, stops printing of char arrays at first null. */
207 show_stop_print_at_null (struct ui_file
*file
, int from_tty
,
208 struct cmd_list_element
*c
, const char *value
)
210 fprintf_filtered (file
,
211 _("Printing of char arrays to stop "
212 "at first null char is %s.\n"),
216 /* Controls pretty printing of structures. */
219 show_prettyformat_structs (struct ui_file
*file
, int from_tty
,
220 struct cmd_list_element
*c
, const char *value
)
222 fprintf_filtered (file
, _("Pretty formatting of structures is %s.\n"), value
);
225 /* Controls pretty printing of arrays. */
228 show_prettyformat_arrays (struct ui_file
*file
, int from_tty
,
229 struct cmd_list_element
*c
, const char *value
)
231 fprintf_filtered (file
, _("Pretty formatting of arrays is %s.\n"), value
);
234 /* If nonzero, causes unions inside structures or other unions to be
238 show_unionprint (struct ui_file
*file
, int from_tty
,
239 struct cmd_list_element
*c
, const char *value
)
241 fprintf_filtered (file
,
242 _("Printing of unions interior to structures is %s.\n"),
246 /* If nonzero, causes machine addresses to be printed in certain contexts. */
249 show_addressprint (struct ui_file
*file
, int from_tty
,
250 struct cmd_list_element
*c
, const char *value
)
252 fprintf_filtered (file
, _("Printing of addresses is %s.\n"), value
);
256 show_symbol_print (struct ui_file
*file
, int from_tty
,
257 struct cmd_list_element
*c
, const char *value
)
259 fprintf_filtered (file
,
260 _("Printing of symbols when printing pointers is %s.\n"),
266 /* A helper function for val_print. When printing in "summary" mode,
267 we want to print scalar arguments, but not aggregate arguments.
268 This function distinguishes between the two. */
271 val_print_scalar_type_p (struct type
*type
)
273 type
= check_typedef (type
);
274 while (TYPE_IS_REFERENCE (type
))
276 type
= TYPE_TARGET_TYPE (type
);
277 type
= check_typedef (type
);
279 switch (TYPE_CODE (type
))
281 case TYPE_CODE_ARRAY
:
282 case TYPE_CODE_STRUCT
:
283 case TYPE_CODE_UNION
:
285 case TYPE_CODE_STRING
:
292 /* A helper function for val_print. When printing with limited depth we
293 want to print string and scalar arguments, but not aggregate arguments.
294 This function distinguishes between the two. */
297 val_print_scalar_or_string_type_p (struct type
*type
,
298 const struct language_defn
*language
)
300 return (val_print_scalar_type_p (type
)
301 || language
->la_is_string_type_p (type
));
304 /* See its definition in value.h. */
307 valprint_check_validity (struct ui_file
*stream
,
309 LONGEST embedded_offset
,
310 const struct value
*val
)
312 type
= check_typedef (type
);
314 if (type_not_associated (type
))
316 val_print_not_associated (stream
);
320 if (type_not_allocated (type
))
322 val_print_not_allocated (stream
);
326 if (TYPE_CODE (type
) != TYPE_CODE_UNION
327 && TYPE_CODE (type
) != TYPE_CODE_STRUCT
328 && TYPE_CODE (type
) != TYPE_CODE_ARRAY
)
330 if (value_bits_any_optimized_out (val
,
331 TARGET_CHAR_BIT
* embedded_offset
,
332 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
334 val_print_optimized_out (val
, stream
);
338 if (value_bits_synthetic_pointer (val
, TARGET_CHAR_BIT
* embedded_offset
,
339 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
341 const int is_ref
= TYPE_CODE (type
) == TYPE_CODE_REF
;
342 int ref_is_addressable
= 0;
346 const struct value
*deref_val
= coerce_ref_if_computed (val
);
348 if (deref_val
!= NULL
)
349 ref_is_addressable
= value_lval_const (deref_val
) == lval_memory
;
352 if (!is_ref
|| !ref_is_addressable
)
353 fputs_styled (_("<synthetic pointer>"), metadata_style
.style (),
356 /* C++ references should be valid even if they're synthetic. */
360 if (!value_bytes_available (val
, embedded_offset
, TYPE_LENGTH (type
)))
362 val_print_unavailable (stream
);
371 val_print_optimized_out (const struct value
*val
, struct ui_file
*stream
)
373 if (val
!= NULL
&& value_lval_const (val
) == lval_register
)
374 val_print_not_saved (stream
);
376 fprintf_styled (stream
, metadata_style
.style (), _("<optimized out>"));
380 val_print_not_saved (struct ui_file
*stream
)
382 fprintf_styled (stream
, metadata_style
.style (), _("<not saved>"));
386 val_print_unavailable (struct ui_file
*stream
)
388 fprintf_styled (stream
, metadata_style
.style (), _("<unavailable>"));
392 val_print_invalid_address (struct ui_file
*stream
)
394 fprintf_styled (stream
, metadata_style
.style (), _("<invalid address>"));
397 /* Print a pointer based on the type of its target.
399 Arguments to this functions are roughly the same as those in
400 generic_val_print. A difference is that ADDRESS is the address to print,
401 with embedded_offset already added. ELTTYPE represents
402 the pointed type after check_typedef. */
405 print_unpacked_pointer (struct type
*type
, struct type
*elttype
,
406 CORE_ADDR address
, struct ui_file
*stream
,
407 const struct value_print_options
*options
)
409 struct gdbarch
*gdbarch
= get_type_arch (type
);
411 if (TYPE_CODE (elttype
) == TYPE_CODE_FUNC
)
413 /* Try to print what function it points to. */
414 print_function_pointer_address (options
, gdbarch
, address
, stream
);
418 if (options
->symbol_print
)
419 print_address_demangle (options
, gdbarch
, address
, stream
, demangle
);
420 else if (options
->addressprint
)
421 fputs_filtered (paddress (gdbarch
, address
), stream
);
424 /* generic_val_print helper for TYPE_CODE_ARRAY. */
427 generic_val_print_array (struct type
*type
,
428 int embedded_offset
, CORE_ADDR address
,
429 struct ui_file
*stream
, int recurse
,
430 struct value
*original_value
,
431 const struct value_print_options
*options
,
433 generic_val_print_decorations
*decorations
)
435 struct type
*unresolved_elttype
= TYPE_TARGET_TYPE (type
);
436 struct type
*elttype
= check_typedef (unresolved_elttype
);
438 if (TYPE_LENGTH (type
) > 0 && TYPE_LENGTH (unresolved_elttype
) > 0)
440 LONGEST low_bound
, high_bound
;
442 if (!get_array_bounds (type
, &low_bound
, &high_bound
))
443 error (_("Could not determine the array high bound"));
445 if (options
->prettyformat_arrays
)
447 print_spaces_filtered (2 + 2 * recurse
, stream
);
450 fputs_filtered (decorations
->array_start
, stream
);
451 val_print_array_elements (type
, embedded_offset
,
453 recurse
, original_value
, options
, 0);
454 fputs_filtered (decorations
->array_end
, stream
);
458 /* Array of unspecified length: treat like pointer to first elt. */
459 print_unpacked_pointer (type
, elttype
, address
+ embedded_offset
, stream
,
465 /* generic_val_print helper for TYPE_CODE_PTR. */
468 generic_val_print_ptr (struct type
*type
,
469 int embedded_offset
, struct ui_file
*stream
,
470 struct value
*original_value
,
471 const struct value_print_options
*options
)
473 struct gdbarch
*gdbarch
= get_type_arch (type
);
474 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
476 if (options
->format
&& options
->format
!= 's')
478 val_print_scalar_formatted (type
, embedded_offset
,
479 original_value
, options
, 0, stream
);
483 struct type
*unresolved_elttype
= TYPE_TARGET_TYPE(type
);
484 struct type
*elttype
= check_typedef (unresolved_elttype
);
485 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
486 CORE_ADDR addr
= unpack_pointer (type
,
487 valaddr
+ embedded_offset
* unit_size
);
489 print_unpacked_pointer (type
, elttype
, addr
, stream
, options
);
493 /* generic_value_print helper for TYPE_CODE_PTR. */
496 generic_value_print_ptr (struct value
*val
, struct ui_file
*stream
,
497 const struct value_print_options
*options
)
500 if (options
->format
&& options
->format
!= 's')
501 value_print_scalar_formatted (val
, options
, 0, stream
);
504 struct type
*type
= check_typedef (value_type (val
));
505 struct type
*elttype
= check_typedef (TYPE_TARGET_TYPE (type
));
506 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
507 CORE_ADDR addr
= unpack_pointer (type
, valaddr
);
509 print_unpacked_pointer (type
, elttype
, addr
, stream
, options
);
514 /* generic_val_print helper for TYPE_CODE_MEMBERPTR. */
517 generic_val_print_memberptr (struct type
*type
,
518 int embedded_offset
, struct ui_file
*stream
,
519 struct value
*original_value
,
520 const struct value_print_options
*options
)
522 val_print_scalar_formatted (type
, embedded_offset
,
523 original_value
, options
, 0, stream
);
526 /* Print '@' followed by the address contained in ADDRESS_BUFFER. */
529 print_ref_address (struct type
*type
, const gdb_byte
*address_buffer
,
530 int embedded_offset
, struct ui_file
*stream
)
532 struct gdbarch
*gdbarch
= get_type_arch (type
);
534 if (address_buffer
!= NULL
)
537 = extract_typed_address (address_buffer
+ embedded_offset
, type
);
539 fprintf_filtered (stream
, "@");
540 fputs_filtered (paddress (gdbarch
, address
), stream
);
542 /* Else: we have a non-addressable value, such as a DW_AT_const_value. */
545 /* If VAL is addressable, return the value contents buffer of a value that
546 represents a pointer to VAL. Otherwise return NULL. */
548 static const gdb_byte
*
549 get_value_addr_contents (struct value
*deref_val
)
551 gdb_assert (deref_val
!= NULL
);
553 if (value_lval_const (deref_val
) == lval_memory
)
554 return value_contents_for_printing_const (value_addr (deref_val
));
557 /* We have a non-addressable value, such as a DW_AT_const_value. */
562 /* generic_val_print helper for TYPE_CODE_{RVALUE_,}REF. */
565 generic_val_print_ref (struct type
*type
,
566 int embedded_offset
, struct ui_file
*stream
, int recurse
,
567 struct value
*original_value
,
568 const struct value_print_options
*options
)
570 struct type
*elttype
= check_typedef (TYPE_TARGET_TYPE (type
));
571 struct value
*deref_val
= NULL
;
572 const int value_is_synthetic
573 = value_bits_synthetic_pointer (original_value
,
574 TARGET_CHAR_BIT
* embedded_offset
,
575 TARGET_CHAR_BIT
* TYPE_LENGTH (type
));
576 const int must_coerce_ref
= ((options
->addressprint
&& value_is_synthetic
)
577 || options
->deref_ref
);
578 const int type_is_defined
= TYPE_CODE (elttype
) != TYPE_CODE_UNDEF
;
579 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
581 if (must_coerce_ref
&& type_is_defined
)
583 deref_val
= coerce_ref_if_computed (original_value
);
585 if (deref_val
!= NULL
)
587 /* More complicated computed references are not supported. */
588 gdb_assert (embedded_offset
== 0);
591 deref_val
= value_at (TYPE_TARGET_TYPE (type
),
592 unpack_pointer (type
, valaddr
+ embedded_offset
));
594 /* Else, original_value isn't a synthetic reference or we don't have to print
595 the reference's contents.
597 Notice that for references to TYPE_CODE_STRUCT, 'set print object on' will
598 cause original_value to be a not_lval instead of an lval_computed,
599 which will make value_bits_synthetic_pointer return false.
600 This happens because if options->objectprint is true, c_value_print will
601 overwrite original_value's contents with the result of coercing
602 the reference through value_addr, and then set its type back to
603 TYPE_CODE_REF. In that case we don't have to coerce the reference again;
604 we can simply treat it as non-synthetic and move on. */
606 if (options
->addressprint
)
608 const gdb_byte
*address
= (value_is_synthetic
&& type_is_defined
609 ? get_value_addr_contents (deref_val
)
612 print_ref_address (type
, address
, embedded_offset
, stream
);
614 if (options
->deref_ref
)
615 fputs_filtered (": ", stream
);
618 if (options
->deref_ref
)
621 common_val_print (deref_val
, stream
, recurse
, options
,
624 fputs_filtered ("???", stream
);
628 /* Helper function for generic_val_print_enum.
629 This is also used to print enums in TYPE_CODE_FLAGS values. */
632 generic_val_print_enum_1 (struct type
*type
, LONGEST val
,
633 struct ui_file
*stream
)
638 len
= TYPE_NFIELDS (type
);
639 for (i
= 0; i
< len
; i
++)
642 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
649 fputs_styled (TYPE_FIELD_NAME (type
, i
), variable_name_style
.style (),
652 else if (TYPE_FLAG_ENUM (type
))
656 /* We have a "flag" enum, so we try to decompose it into pieces as
657 appropriate. The enum may have multiple enumerators representing
658 the same bit, in which case we choose to only print the first one
660 for (i
= 0; i
< len
; ++i
)
664 ULONGEST enumval
= TYPE_FIELD_ENUMVAL (type
, i
);
665 int nbits
= count_one_bits_ll (enumval
);
667 gdb_assert (nbits
== 0 || nbits
== 1);
669 if ((val
& enumval
) != 0)
673 fputs_filtered ("(", stream
);
677 fputs_filtered (" | ", stream
);
679 val
&= ~TYPE_FIELD_ENUMVAL (type
, i
);
680 fputs_styled (TYPE_FIELD_NAME (type
, i
),
681 variable_name_style
.style (), stream
);
687 /* There are leftover bits, print them. */
689 fputs_filtered ("(", stream
);
691 fputs_filtered (" | ", stream
);
693 fputs_filtered ("unknown: 0x", stream
);
694 print_longest (stream
, 'x', 0, val
);
695 fputs_filtered (")", stream
);
699 /* Nothing has been printed and the value is 0, the enum value must
701 fputs_filtered ("0", stream
);
705 /* Something has been printed, close the parenthesis. */
706 fputs_filtered (")", stream
);
710 print_longest (stream
, 'd', 0, val
);
713 /* generic_val_print helper for TYPE_CODE_ENUM. */
716 generic_val_print_enum (struct type
*type
,
717 int embedded_offset
, struct ui_file
*stream
,
718 struct value
*original_value
,
719 const struct value_print_options
*options
)
722 struct gdbarch
*gdbarch
= get_type_arch (type
);
723 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
725 gdb_assert (!options
->format
);
727 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
729 val
= unpack_long (type
, valaddr
+ embedded_offset
* unit_size
);
731 generic_val_print_enum_1 (type
, val
, stream
);
734 /* generic_val_print helper for TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
737 generic_val_print_func (struct type
*type
,
738 int embedded_offset
, CORE_ADDR address
,
739 struct ui_file
*stream
,
740 struct value
*original_value
,
741 const struct value_print_options
*options
)
743 struct gdbarch
*gdbarch
= get_type_arch (type
);
745 gdb_assert (!options
->format
);
747 /* FIXME, we should consider, at least for ANSI C language,
748 eliminating the distinction made between FUNCs and POINTERs to
750 fprintf_filtered (stream
, "{");
751 type_print (type
, "", stream
, -1);
752 fprintf_filtered (stream
, "} ");
753 /* Try to print what function it points to, and its address. */
754 print_address_demangle (options
, gdbarch
, address
, stream
, demangle
);
757 /* generic_val_print helper for TYPE_CODE_BOOL. */
760 generic_val_print_bool (struct type
*type
,
761 int embedded_offset
, struct ui_file
*stream
,
762 struct value
*original_value
,
763 const struct value_print_options
*options
,
764 const struct generic_val_print_decorations
*decorations
)
767 struct gdbarch
*gdbarch
= get_type_arch (type
);
768 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
770 if (options
->format
|| options
->output_format
)
772 struct value_print_options opts
= *options
;
773 opts
.format
= (options
->format
? options
->format
774 : options
->output_format
);
775 val_print_scalar_formatted (type
, embedded_offset
,
776 original_value
, &opts
, 0, stream
);
780 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
782 val
= unpack_long (type
, valaddr
+ embedded_offset
* unit_size
);
784 fputs_filtered (decorations
->false_name
, stream
);
786 fputs_filtered (decorations
->true_name
, stream
);
788 print_longest (stream
, 'd', 0, val
);
792 /* generic_value_print helper for TYPE_CODE_BOOL. */
795 generic_value_print_bool
796 (struct value
*value
, struct ui_file
*stream
,
797 const struct value_print_options
*options
,
798 const struct generic_val_print_decorations
*decorations
)
800 if (options
->format
|| options
->output_format
)
802 struct value_print_options opts
= *options
;
803 opts
.format
= (options
->format
? options
->format
804 : options
->output_format
);
805 value_print_scalar_formatted (value
, &opts
, 0, stream
);
809 const gdb_byte
*valaddr
= value_contents_for_printing (value
);
810 struct type
*type
= check_typedef (value_type (value
));
811 LONGEST val
= unpack_long (type
, valaddr
);
813 fputs_filtered (decorations
->false_name
, stream
);
815 fputs_filtered (decorations
->true_name
, stream
);
817 print_longest (stream
, 'd', 0, val
);
821 /* generic_val_print helper for TYPE_CODE_INT. */
824 generic_val_print_int (struct type
*type
,
825 int embedded_offset
, struct ui_file
*stream
,
826 struct value
*original_value
,
827 const struct value_print_options
*options
)
829 struct value_print_options opts
= *options
;
831 opts
.format
= (options
->format
? options
->format
832 : options
->output_format
);
833 val_print_scalar_formatted (type
, embedded_offset
,
834 original_value
, &opts
, 0, stream
);
837 /* generic_value_print helper for TYPE_CODE_INT. */
840 generic_value_print_int (struct value
*val
, struct ui_file
*stream
,
841 const struct value_print_options
*options
)
843 struct value_print_options opts
= *options
;
845 opts
.format
= (options
->format
? options
->format
846 : options
->output_format
);
847 value_print_scalar_formatted (val
, &opts
, 0, stream
);
850 /* generic_val_print helper for TYPE_CODE_CHAR. */
853 generic_val_print_char (struct type
*type
, struct type
*unresolved_type
,
855 struct ui_file
*stream
,
856 struct value
*original_value
,
857 const struct value_print_options
*options
)
860 struct gdbarch
*gdbarch
= get_type_arch (type
);
861 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
863 if (options
->format
|| options
->output_format
)
865 struct value_print_options opts
= *options
;
867 opts
.format
= (options
->format
? options
->format
868 : options
->output_format
);
869 val_print_scalar_formatted (type
, embedded_offset
,
870 original_value
, &opts
, 0, stream
);
874 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
876 val
= unpack_long (type
, valaddr
+ embedded_offset
* unit_size
);
877 if (TYPE_UNSIGNED (type
))
878 fprintf_filtered (stream
, "%u", (unsigned int) val
);
880 fprintf_filtered (stream
, "%d", (int) val
);
881 fputs_filtered (" ", stream
);
882 LA_PRINT_CHAR (val
, unresolved_type
, stream
);
886 /* generic_val_print helper for TYPE_CODE_FLT and TYPE_CODE_DECFLOAT. */
889 generic_val_print_float (struct type
*type
,
890 int embedded_offset
, struct ui_file
*stream
,
891 struct value
*original_value
,
892 const struct value_print_options
*options
)
894 struct gdbarch
*gdbarch
= get_type_arch (type
);
895 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
899 val_print_scalar_formatted (type
, embedded_offset
,
900 original_value
, options
, 0, stream
);
904 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
906 print_floating (valaddr
+ embedded_offset
* unit_size
, type
, stream
);
910 /* generic_val_print helper for TYPE_CODE_COMPLEX. */
913 generic_val_print_complex (struct type
*type
,
914 int embedded_offset
, struct ui_file
*stream
,
915 struct value
*original_value
,
916 const struct value_print_options
*options
,
917 const struct generic_val_print_decorations
920 struct gdbarch
*gdbarch
= get_type_arch (type
);
921 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
922 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
924 fprintf_filtered (stream
, "%s", decorations
->complex_prefix
);
926 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
),
927 embedded_offset
, original_value
, options
, 0,
930 print_floating (valaddr
+ embedded_offset
* unit_size
,
931 TYPE_TARGET_TYPE (type
), stream
);
932 fprintf_filtered (stream
, "%s", decorations
->complex_infix
);
934 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
),
936 + type_length_units (TYPE_TARGET_TYPE (type
)),
937 original_value
, options
, 0, stream
);
939 print_floating (valaddr
+ embedded_offset
* unit_size
940 + TYPE_LENGTH (TYPE_TARGET_TYPE (type
)),
941 TYPE_TARGET_TYPE (type
), stream
);
942 fprintf_filtered (stream
, "%s", decorations
->complex_suffix
);
945 /* A generic val_print that is suitable for use by language
946 implementations of the la_val_print method. This function can
947 handle most type codes, though not all, notably exception
948 TYPE_CODE_UNION and TYPE_CODE_STRUCT, which must be implemented by
951 Most arguments are as to val_print.
953 The additional DECORATIONS argument can be used to customize the
954 output in some small, language-specific ways. */
957 generic_val_print (struct type
*type
,
958 int embedded_offset
, CORE_ADDR address
,
959 struct ui_file
*stream
, int recurse
,
960 struct value
*original_value
,
961 const struct value_print_options
*options
,
962 const struct generic_val_print_decorations
*decorations
)
964 struct type
*unresolved_type
= type
;
966 type
= check_typedef (type
);
967 switch (TYPE_CODE (type
))
969 case TYPE_CODE_ARRAY
:
970 generic_val_print_array (type
, embedded_offset
, address
, stream
,
971 recurse
, original_value
, options
, decorations
);
974 case TYPE_CODE_MEMBERPTR
:
975 generic_val_print_memberptr (type
, embedded_offset
, stream
,
976 original_value
, options
);
980 generic_val_print_ptr (type
, embedded_offset
, stream
,
981 original_value
, options
);
985 case TYPE_CODE_RVALUE_REF
:
986 generic_val_print_ref (type
, embedded_offset
, stream
, recurse
,
987 original_value
, options
);
992 val_print_scalar_formatted (type
, embedded_offset
,
993 original_value
, options
, 0, stream
);
995 generic_val_print_enum (type
, embedded_offset
, stream
,
996 original_value
, options
);
999 case TYPE_CODE_FLAGS
:
1000 if (options
->format
)
1001 val_print_scalar_formatted (type
, embedded_offset
,
1002 original_value
, options
, 0, stream
);
1004 val_print_type_code_flags (type
, original_value
, embedded_offset
,
1008 case TYPE_CODE_FUNC
:
1009 case TYPE_CODE_METHOD
:
1010 if (options
->format
)
1011 val_print_scalar_formatted (type
, embedded_offset
,
1012 original_value
, options
, 0, stream
);
1014 generic_val_print_func (type
, embedded_offset
, address
, stream
,
1015 original_value
, options
);
1018 case TYPE_CODE_BOOL
:
1019 generic_val_print_bool (type
, embedded_offset
, stream
,
1020 original_value
, options
, decorations
);
1023 case TYPE_CODE_RANGE
:
1024 /* FIXME: create_static_range_type does not set the unsigned bit in a
1025 range type (I think it probably should copy it from the
1026 target type), so we won't print values which are too large to
1027 fit in a signed integer correctly. */
1028 /* FIXME: Doesn't handle ranges of enums correctly. (Can't just
1029 print with the target type, though, because the size of our
1030 type and the target type might differ). */
1035 generic_val_print_int (type
, embedded_offset
, stream
,
1036 original_value
, options
);
1039 case TYPE_CODE_CHAR
:
1040 generic_val_print_char (type
, unresolved_type
, embedded_offset
,
1041 stream
, original_value
, options
);
1045 case TYPE_CODE_DECFLOAT
:
1046 generic_val_print_float (type
, embedded_offset
, stream
,
1047 original_value
, options
);
1050 case TYPE_CODE_VOID
:
1051 fputs_filtered (decorations
->void_name
, stream
);
1054 case TYPE_CODE_ERROR
:
1055 fprintf_filtered (stream
, "%s", TYPE_ERROR_NAME (type
));
1058 case TYPE_CODE_UNDEF
:
1059 /* This happens (without TYPE_STUB set) on systems which don't use
1060 dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
1061 and no complete type for struct foo in that file. */
1062 fprintf_styled (stream
, metadata_style
.style (), _("<incomplete type>"));
1065 case TYPE_CODE_COMPLEX
:
1066 generic_val_print_complex (type
, embedded_offset
, stream
,
1067 original_value
, options
, decorations
);
1070 case TYPE_CODE_UNION
:
1071 case TYPE_CODE_STRUCT
:
1072 case TYPE_CODE_METHODPTR
:
1074 error (_("Unhandled type code %d in symbol table."),
1079 /* See valprint.h. */
1082 generic_value_print (struct value
*val
, struct ui_file
*stream
, int recurse
,
1083 const struct value_print_options
*options
,
1084 const struct generic_val_print_decorations
*decorations
)
1086 struct type
*type
= value_type (val
);
1087 struct type
*unresolved_type
= type
;
1089 type
= check_typedef (type
);
1090 switch (TYPE_CODE (type
))
1092 case TYPE_CODE_ARRAY
:
1093 generic_val_print_array (type
, 0, value_address (val
), stream
,
1094 recurse
, val
, options
, decorations
);
1097 case TYPE_CODE_MEMBERPTR
:
1098 value_print_scalar_formatted (val
, options
, 0, stream
);
1102 generic_value_print_ptr (val
, stream
, options
);
1106 case TYPE_CODE_RVALUE_REF
:
1107 generic_val_print_ref (type
, 0, stream
, recurse
,
1111 case TYPE_CODE_ENUM
:
1112 if (options
->format
)
1113 value_print_scalar_formatted (val
, options
, 0, stream
);
1115 generic_val_print_enum (type
, 0, stream
, val
, options
);
1118 case TYPE_CODE_FLAGS
:
1119 if (options
->format
)
1120 value_print_scalar_formatted (val
, options
, 0, stream
);
1122 val_print_type_code_flags (type
, val
, 0, stream
);
1125 case TYPE_CODE_FUNC
:
1126 case TYPE_CODE_METHOD
:
1127 if (options
->format
)
1128 value_print_scalar_formatted (val
, options
, 0, stream
);
1130 generic_val_print_func (type
, 0, value_address (val
), stream
,
1134 case TYPE_CODE_BOOL
:
1135 generic_value_print_bool (val
, stream
, options
, decorations
);
1138 case TYPE_CODE_RANGE
:
1139 /* FIXME: create_static_range_type does not set the unsigned bit in a
1140 range type (I think it probably should copy it from the
1141 target type), so we won't print values which are too large to
1142 fit in a signed integer correctly. */
1143 /* FIXME: Doesn't handle ranges of enums correctly. (Can't just
1144 print with the target type, though, because the size of our
1145 type and the target type might differ). */
1150 generic_value_print_int (val
, stream
, options
);
1153 case TYPE_CODE_CHAR
:
1154 generic_val_print_char (type
, unresolved_type
, 0,
1155 stream
, val
, options
);
1159 case TYPE_CODE_DECFLOAT
:
1160 generic_val_print_float (type
, 0, stream
,
1164 case TYPE_CODE_VOID
:
1165 fputs_filtered (decorations
->void_name
, stream
);
1168 case TYPE_CODE_ERROR
:
1169 fprintf_filtered (stream
, "%s", TYPE_ERROR_NAME (type
));
1172 case TYPE_CODE_UNDEF
:
1173 /* This happens (without TYPE_STUB set) on systems which don't use
1174 dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
1175 and no complete type for struct foo in that file. */
1176 fprintf_styled (stream
, metadata_style
.style (), _("<incomplete type>"));
1179 case TYPE_CODE_COMPLEX
:
1180 generic_val_print_complex (type
, 0, stream
,
1181 val
, options
, decorations
);
1184 case TYPE_CODE_UNION
:
1185 case TYPE_CODE_STRUCT
:
1186 case TYPE_CODE_METHODPTR
:
1188 error (_("Unhandled type code %d in symbol table."),
1193 /* Helper function for val_print and common_val_print that does the
1194 work. Arguments are as to val_print, but FULL_VALUE, if given, is
1195 the value to be printed. */
1198 do_val_print (struct value
*full_value
,
1199 struct type
*type
, LONGEST embedded_offset
,
1200 CORE_ADDR address
, struct ui_file
*stream
, int recurse
,
1202 const struct value_print_options
*options
,
1203 const struct language_defn
*language
)
1206 struct value_print_options local_opts
= *options
;
1207 struct type
*real_type
= check_typedef (type
);
1209 if (local_opts
.prettyformat
== Val_prettyformat_default
)
1210 local_opts
.prettyformat
= (local_opts
.prettyformat_structs
1211 ? Val_prettyformat
: Val_no_prettyformat
);
1215 /* Ensure that the type is complete and not just a stub. If the type is
1216 only a stub and we can't find and substitute its complete type, then
1217 print appropriate string and return. */
1219 if (TYPE_STUB (real_type
))
1221 fprintf_styled (stream
, metadata_style
.style (), _("<incomplete type>"));
1225 if (!valprint_check_validity (stream
, real_type
, embedded_offset
, val
))
1230 ret
= apply_ext_lang_val_pretty_printer (type
, embedded_offset
,
1231 address
, stream
, recurse
,
1232 val
, options
, language
);
1237 /* Handle summary mode. If the value is a scalar, print it;
1238 otherwise, print an ellipsis. */
1239 if (options
->summary
&& !val_print_scalar_type_p (type
))
1241 fprintf_filtered (stream
, "...");
1245 /* If this value is too deep then don't print it. */
1246 if (!val_print_scalar_or_string_type_p (type
, language
)
1247 && val_print_check_max_depth (stream
, recurse
, options
, language
))
1252 if (full_value
!= nullptr && language
->la_value_print_inner
!= nullptr)
1253 language
->la_value_print_inner (full_value
, stream
, recurse
,
1256 language
->la_val_print (type
, embedded_offset
, address
,
1257 stream
, recurse
, val
,
1260 catch (const gdb_exception_error
&except
)
1262 fprintf_styled (stream
, metadata_style
.style (),
1263 _("<error reading variable>"));
1267 /* Print using the given LANGUAGE the data of type TYPE located at
1268 VAL's contents buffer + EMBEDDED_OFFSET (within GDB), which came
1269 from the inferior at address ADDRESS + EMBEDDED_OFFSET, onto
1270 stdio stream STREAM according to OPTIONS. VAL is the whole object
1271 that came from ADDRESS.
1273 The language printers will pass down an adjusted EMBEDDED_OFFSET to
1274 further helper subroutines as subfields of TYPE are printed. In
1275 such cases, VAL is passed down unadjusted, so
1276 that VAL can be queried for metadata about the contents data being
1277 printed, using EMBEDDED_OFFSET as an offset into VAL's contents
1278 buffer. For example: "has this field been optimized out", or "I'm
1279 printing an object while inspecting a traceframe; has this
1280 particular piece of data been collected?".
1282 RECURSE indicates the amount of indentation to supply before
1283 continuation lines; this amount is roughly twice the value of
1287 val_print (struct type
*type
, LONGEST embedded_offset
,
1288 CORE_ADDR address
, struct ui_file
*stream
, int recurse
,
1290 const struct value_print_options
*options
,
1291 const struct language_defn
*language
)
1293 do_val_print (nullptr, type
, embedded_offset
, address
, stream
,
1294 recurse
, val
, options
, language
);
1297 /* See valprint.h. */
1300 val_print_check_max_depth (struct ui_file
*stream
, int recurse
,
1301 const struct value_print_options
*options
,
1302 const struct language_defn
*language
)
1304 if (options
->max_depth
> -1 && recurse
>= options
->max_depth
)
1306 gdb_assert (language
->la_struct_too_deep_ellipsis
!= NULL
);
1307 fputs_filtered (language
->la_struct_too_deep_ellipsis
, stream
);
1314 /* Check whether the value VAL is printable. Return 1 if it is;
1315 return 0 and print an appropriate error message to STREAM according to
1316 OPTIONS if it is not. */
1319 value_check_printable (struct value
*val
, struct ui_file
*stream
,
1320 const struct value_print_options
*options
)
1324 fprintf_styled (stream
, metadata_style
.style (),
1325 _("<address of value unknown>"));
1329 if (value_entirely_optimized_out (val
))
1331 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1332 fprintf_filtered (stream
, "...");
1334 val_print_optimized_out (val
, stream
);
1338 if (value_entirely_unavailable (val
))
1340 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1341 fprintf_filtered (stream
, "...");
1343 val_print_unavailable (stream
);
1347 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_INTERNAL_FUNCTION
)
1349 fprintf_styled (stream
, metadata_style
.style (),
1350 _("<internal function %s>"),
1351 value_internal_function_name (val
));
1355 if (type_not_associated (value_type (val
)))
1357 val_print_not_associated (stream
);
1361 if (type_not_allocated (value_type (val
)))
1363 val_print_not_allocated (stream
);
1370 /* Print using the given LANGUAGE the value VAL onto stream STREAM according
1373 This is a preferable interface to val_print, above, because it uses
1374 GDB's value mechanism. */
1377 common_val_print (struct value
*val
, struct ui_file
*stream
, int recurse
,
1378 const struct value_print_options
*options
,
1379 const struct language_defn
*language
)
1381 if (!value_check_printable (val
, stream
, options
))
1384 if (language
->la_language
== language_ada
)
1385 /* The value might have a dynamic type, which would cause trouble
1386 below when trying to extract the value contents (since the value
1387 size is determined from the type size which is unknown). So
1388 get a fixed representation of our value. */
1389 val
= ada_to_fixed_value (val
);
1391 if (value_lazy (val
))
1392 value_fetch_lazy (val
);
1394 do_val_print (val
, value_type (val
),
1395 value_embedded_offset (val
), value_address (val
),
1397 val
, options
, language
);
1400 /* See valprint.h. */
1403 common_val_print_checked (struct value
*val
, struct ui_file
*stream
,
1405 const struct value_print_options
*options
,
1406 const struct language_defn
*language
)
1408 if (!value_check_printable (val
, stream
, options
))
1410 common_val_print (val
, stream
, recurse
, options
, language
);
1413 /* Print on stream STREAM the value VAL according to OPTIONS. The value
1414 is printed using the current_language syntax. */
1417 value_print (struct value
*val
, struct ui_file
*stream
,
1418 const struct value_print_options
*options
)
1420 scoped_value_mark free_values
;
1422 if (!value_check_printable (val
, stream
, options
))
1428 = apply_ext_lang_val_pretty_printer (value_type (val
),
1429 value_embedded_offset (val
),
1430 value_address (val
),
1432 val
, options
, current_language
);
1438 LA_VALUE_PRINT (val
, stream
, options
);
1442 val_print_type_code_flags (struct type
*type
, struct value
*original_value
,
1443 int embedded_offset
, struct ui_file
*stream
)
1445 const gdb_byte
*valaddr
= (value_contents_for_printing (original_value
)
1447 ULONGEST val
= unpack_long (type
, valaddr
);
1448 int field
, nfields
= TYPE_NFIELDS (type
);
1449 struct gdbarch
*gdbarch
= get_type_arch (type
);
1450 struct type
*bool_type
= builtin_type (gdbarch
)->builtin_bool
;
1452 fputs_filtered ("[", stream
);
1453 for (field
= 0; field
< nfields
; field
++)
1455 if (TYPE_FIELD_NAME (type
, field
)[0] != '\0')
1457 struct type
*field_type
= TYPE_FIELD_TYPE (type
, field
);
1459 if (field_type
== bool_type
1460 /* We require boolean types here to be one bit wide. This is a
1461 problematic place to notify the user of an internal error
1462 though. Instead just fall through and print the field as an
1464 && TYPE_FIELD_BITSIZE (type
, field
) == 1)
1466 if (val
& ((ULONGEST
)1 << TYPE_FIELD_BITPOS (type
, field
)))
1469 styled_string (variable_name_style
.style (),
1470 TYPE_FIELD_NAME (type
, field
)));
1474 unsigned field_len
= TYPE_FIELD_BITSIZE (type
, field
);
1476 = val
>> (TYPE_FIELD_BITPOS (type
, field
) - field_len
+ 1);
1478 if (field_len
< sizeof (ULONGEST
) * TARGET_CHAR_BIT
)
1479 field_val
&= ((ULONGEST
) 1 << field_len
) - 1;
1480 fprintf_filtered (stream
, " %ps=",
1481 styled_string (variable_name_style
.style (),
1482 TYPE_FIELD_NAME (type
, field
)));
1483 if (TYPE_CODE (field_type
) == TYPE_CODE_ENUM
)
1484 generic_val_print_enum_1 (field_type
, field_val
, stream
);
1486 print_longest (stream
, 'd', 0, field_val
);
1490 fputs_filtered (" ]", stream
);
1493 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
1494 according to OPTIONS and SIZE on STREAM. Format i is not supported
1497 This is how the elements of an array or structure are printed
1501 val_print_scalar_formatted (struct type
*type
,
1502 LONGEST embedded_offset
,
1504 const struct value_print_options
*options
,
1506 struct ui_file
*stream
)
1508 struct gdbarch
*arch
= get_type_arch (type
);
1509 int unit_size
= gdbarch_addressable_memory_unit_size (arch
);
1511 gdb_assert (val
!= NULL
);
1513 /* If we get here with a string format, try again without it. Go
1514 all the way back to the language printers, which may call us
1516 if (options
->format
== 's')
1518 struct value_print_options opts
= *options
;
1521 val_print (type
, embedded_offset
, 0, stream
, 0, val
, &opts
,
1526 /* value_contents_for_printing fetches all VAL's contents. They are
1527 needed to check whether VAL is optimized-out or unavailable
1529 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
1531 /* A scalar object that does not have all bits available can't be
1532 printed, because all bits contribute to its representation. */
1533 if (value_bits_any_optimized_out (val
,
1534 TARGET_CHAR_BIT
* embedded_offset
,
1535 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
1536 val_print_optimized_out (val
, stream
);
1537 else if (!value_bytes_available (val
, embedded_offset
, TYPE_LENGTH (type
)))
1538 val_print_unavailable (stream
);
1540 print_scalar_formatted (valaddr
+ embedded_offset
* unit_size
, type
,
1541 options
, size
, stream
);
1544 /* See valprint.h. */
1547 value_print_scalar_formatted (struct value
*val
,
1548 const struct value_print_options
*options
,
1550 struct ui_file
*stream
)
1552 struct type
*type
= check_typedef (value_type (val
));
1554 gdb_assert (val
!= NULL
);
1556 /* If we get here with a string format, try again without it. Go
1557 all the way back to the language printers, which may call us
1559 if (options
->format
== 's')
1561 struct value_print_options opts
= *options
;
1564 common_val_print (val
, stream
, 0, &opts
, current_language
);
1568 /* value_contents_for_printing fetches all VAL's contents. They are
1569 needed to check whether VAL is optimized-out or unavailable
1571 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
1573 /* A scalar object that does not have all bits available can't be
1574 printed, because all bits contribute to its representation. */
1575 if (value_bits_any_optimized_out (val
, 0,
1576 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
1577 val_print_optimized_out (val
, stream
);
1578 else if (!value_bytes_available (val
, 0, TYPE_LENGTH (type
)))
1579 val_print_unavailable (stream
);
1581 print_scalar_formatted (valaddr
, type
, options
, size
, stream
);
1584 /* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g.
1585 The raison d'etre of this function is to consolidate printing of
1586 LONG_LONG's into this one function. The format chars b,h,w,g are
1587 from print_scalar_formatted(). Numbers are printed using C
1590 USE_C_FORMAT means to use C format in all cases. Without it,
1591 'o' and 'x' format do not include the standard C radix prefix
1594 Hilfinger/2004-09-09: USE_C_FORMAT was originally called USE_LOCAL
1595 and was intended to request formatting according to the current
1596 language and would be used for most integers that GDB prints. The
1597 exceptional cases were things like protocols where the format of
1598 the integer is a protocol thing, not a user-visible thing). The
1599 parameter remains to preserve the information of what things might
1600 be printed with language-specific format, should we ever resurrect
1604 print_longest (struct ui_file
*stream
, int format
, int use_c_format
,
1612 val
= int_string (val_long
, 10, 1, 0, 1); break;
1614 val
= int_string (val_long
, 10, 0, 0, 1); break;
1616 val
= int_string (val_long
, 16, 0, 0, use_c_format
); break;
1618 val
= int_string (val_long
, 16, 0, 2, 1); break;
1620 val
= int_string (val_long
, 16, 0, 4, 1); break;
1622 val
= int_string (val_long
, 16, 0, 8, 1); break;
1624 val
= int_string (val_long
, 16, 0, 16, 1); break;
1627 val
= int_string (val_long
, 8, 0, 0, use_c_format
); break;
1629 internal_error (__FILE__
, __LINE__
,
1630 _("failed internal consistency check"));
1632 fputs_filtered (val
, stream
);
1635 /* This used to be a macro, but I don't think it is called often enough
1636 to merit such treatment. */
1637 /* Convert a LONGEST to an int. This is used in contexts (e.g. number of
1638 arguments to a function, number in a value history, register number, etc.)
1639 where the value must not be larger than can fit in an int. */
1642 longest_to_int (LONGEST arg
)
1644 /* Let the compiler do the work. */
1645 int rtnval
= (int) arg
;
1647 /* Check for overflows or underflows. */
1648 if (sizeof (LONGEST
) > sizeof (int))
1652 error (_("Value out of range."));
1658 /* Print a floating point value of floating-point type TYPE,
1659 pointed to in GDB by VALADDR, on STREAM. */
1662 print_floating (const gdb_byte
*valaddr
, struct type
*type
,
1663 struct ui_file
*stream
)
1665 std::string str
= target_float_to_string (valaddr
, type
);
1666 fputs_filtered (str
.c_str (), stream
);
1670 print_binary_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1671 unsigned len
, enum bfd_endian byte_order
, bool zero_pad
)
1676 bool seen_a_one
= false;
1678 /* Declared "int" so it will be signed.
1679 This ensures that right shift will shift in zeros. */
1681 const int mask
= 0x080;
1683 if (byte_order
== BFD_ENDIAN_BIG
)
1689 /* Every byte has 8 binary characters; peel off
1690 and print from the MSB end. */
1692 for (i
= 0; i
< (HOST_CHAR_BIT
* sizeof (*p
)); i
++)
1694 if (*p
& (mask
>> i
))
1699 if (zero_pad
|| seen_a_one
|| b
== '1')
1700 fputc_filtered (b
, stream
);
1708 for (p
= valaddr
+ len
- 1;
1712 for (i
= 0; i
< (HOST_CHAR_BIT
* sizeof (*p
)); i
++)
1714 if (*p
& (mask
>> i
))
1719 if (zero_pad
|| seen_a_one
|| b
== '1')
1720 fputc_filtered (b
, stream
);
1727 /* When not zero-padding, ensure that something is printed when the
1729 if (!zero_pad
&& !seen_a_one
)
1730 fputc_filtered ('0', stream
);
1733 /* A helper for print_octal_chars that emits a single octal digit,
1734 optionally suppressing it if is zero and updating SEEN_A_ONE. */
1737 emit_octal_digit (struct ui_file
*stream
, bool *seen_a_one
, int digit
)
1739 if (*seen_a_one
|| digit
!= 0)
1740 fprintf_filtered (stream
, "%o", digit
);
1745 /* VALADDR points to an integer of LEN bytes.
1746 Print it in octal on stream or format it in buf. */
1749 print_octal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1750 unsigned len
, enum bfd_endian byte_order
)
1753 unsigned char octa1
, octa2
, octa3
, carry
;
1756 /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track
1757 * the extra bits, which cycle every three bytes:
1759 * Byte side: 0 1 2 3
1761 * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 |
1763 * Octal side: 0 1 carry 3 4 carry ...
1765 * Cycle number: 0 1 2
1767 * But of course we are printing from the high side, so we have to
1768 * figure out where in the cycle we are so that we end up with no
1769 * left over bits at the end.
1771 #define BITS_IN_OCTAL 3
1772 #define HIGH_ZERO 0340
1773 #define LOW_ZERO 0034
1774 #define CARRY_ZERO 0003
1775 static_assert (HIGH_ZERO
+ LOW_ZERO
+ CARRY_ZERO
== 0xff,
1776 "cycle zero constants are wrong");
1777 #define HIGH_ONE 0200
1778 #define MID_ONE 0160
1779 #define LOW_ONE 0016
1780 #define CARRY_ONE 0001
1781 static_assert (HIGH_ONE
+ MID_ONE
+ LOW_ONE
+ CARRY_ONE
== 0xff,
1782 "cycle one constants are wrong");
1783 #define HIGH_TWO 0300
1784 #define MID_TWO 0070
1785 #define LOW_TWO 0007
1786 static_assert (HIGH_TWO
+ MID_TWO
+ LOW_TWO
== 0xff,
1787 "cycle two constants are wrong");
1789 /* For 32 we start in cycle 2, with two bits and one bit carry;
1790 for 64 in cycle in cycle 1, with one bit and a two bit carry. */
1792 cycle
= (len
* HOST_CHAR_BIT
) % BITS_IN_OCTAL
;
1795 fputs_filtered ("0", stream
);
1796 bool seen_a_one
= false;
1797 if (byte_order
== BFD_ENDIAN_BIG
)
1806 /* No carry in, carry out two bits. */
1808 octa1
= (HIGH_ZERO
& *p
) >> 5;
1809 octa2
= (LOW_ZERO
& *p
) >> 2;
1810 carry
= (CARRY_ZERO
& *p
);
1811 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1812 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1816 /* Carry in two bits, carry out one bit. */
1818 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1819 octa2
= (MID_ONE
& *p
) >> 4;
1820 octa3
= (LOW_ONE
& *p
) >> 1;
1821 carry
= (CARRY_ONE
& *p
);
1822 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1823 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1824 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1828 /* Carry in one bit, no carry out. */
1830 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1831 octa2
= (MID_TWO
& *p
) >> 3;
1832 octa3
= (LOW_TWO
& *p
);
1834 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1835 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1836 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1840 error (_("Internal error in octal conversion;"));
1844 cycle
= cycle
% BITS_IN_OCTAL
;
1849 for (p
= valaddr
+ len
- 1;
1856 /* Carry out, no carry in */
1858 octa1
= (HIGH_ZERO
& *p
) >> 5;
1859 octa2
= (LOW_ZERO
& *p
) >> 2;
1860 carry
= (CARRY_ZERO
& *p
);
1861 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1862 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1866 /* Carry in, carry out */
1868 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1869 octa2
= (MID_ONE
& *p
) >> 4;
1870 octa3
= (LOW_ONE
& *p
) >> 1;
1871 carry
= (CARRY_ONE
& *p
);
1872 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1873 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1874 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1878 /* Carry in, no carry out */
1880 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1881 octa2
= (MID_TWO
& *p
) >> 3;
1882 octa3
= (LOW_TWO
& *p
);
1884 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1885 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1886 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1890 error (_("Internal error in octal conversion;"));
1894 cycle
= cycle
% BITS_IN_OCTAL
;
1900 /* Possibly negate the integer represented by BYTES. It contains LEN
1901 bytes in the specified byte order. If the integer is negative,
1902 copy it into OUT_VEC, negate it, and return true. Otherwise, do
1903 nothing and return false. */
1906 maybe_negate_by_bytes (const gdb_byte
*bytes
, unsigned len
,
1907 enum bfd_endian byte_order
,
1908 gdb::byte_vector
*out_vec
)
1911 gdb_assert (len
> 0);
1912 if (byte_order
== BFD_ENDIAN_BIG
)
1913 sign_byte
= bytes
[0];
1915 sign_byte
= bytes
[len
- 1];
1916 if ((sign_byte
& 0x80) == 0)
1919 out_vec
->resize (len
);
1921 /* Compute -x == 1 + ~x. */
1922 if (byte_order
== BFD_ENDIAN_LITTLE
)
1925 for (unsigned i
= 0; i
< len
; ++i
)
1927 unsigned tem
= (0xff & ~bytes
[i
]) + carry
;
1928 (*out_vec
)[i
] = tem
& 0xff;
1935 for (unsigned i
= len
; i
> 0; --i
)
1937 unsigned tem
= (0xff & ~bytes
[i
- 1]) + carry
;
1938 (*out_vec
)[i
- 1] = tem
& 0xff;
1946 /* VALADDR points to an integer of LEN bytes.
1947 Print it in decimal on stream or format it in buf. */
1950 print_decimal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1951 unsigned len
, bool is_signed
,
1952 enum bfd_endian byte_order
)
1955 #define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */
1956 #define CARRY_LEFT( x ) ((x) % TEN)
1957 #define SHIFT( x ) ((x) << 4)
1958 #define LOW_NIBBLE( x ) ( (x) & 0x00F)
1959 #define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4)
1964 int i
, j
, decimal_digits
;
1968 gdb::byte_vector negated_bytes
;
1970 && maybe_negate_by_bytes (valaddr
, len
, byte_order
, &negated_bytes
))
1972 fputs_filtered ("-", stream
);
1973 valaddr
= negated_bytes
.data ();
1976 /* Base-ten number is less than twice as many digits
1977 as the base 16 number, which is 2 digits per byte. */
1979 decimal_len
= len
* 2 * 2;
1980 std::vector
<unsigned char> digits (decimal_len
, 0);
1982 /* Ok, we have an unknown number of bytes of data to be printed in
1985 * Given a hex number (in nibbles) as XYZ, we start by taking X and
1986 * decimalizing it as "x1 x2" in two decimal nibbles. Then we multiply
1987 * the nibbles by 16, add Y and re-decimalize. Repeat with Z.
1989 * The trick is that "digits" holds a base-10 number, but sometimes
1990 * the individual digits are > 10.
1992 * Outer loop is per nibble (hex digit) of input, from MSD end to
1995 decimal_digits
= 0; /* Number of decimal digits so far */
1996 p
= (byte_order
== BFD_ENDIAN_BIG
) ? valaddr
: valaddr
+ len
- 1;
1998 while ((byte_order
== BFD_ENDIAN_BIG
) ? (p
< valaddr
+ len
) : (p
>= valaddr
))
2001 * Multiply current base-ten number by 16 in place.
2002 * Each digit was between 0 and 9, now is between
2005 for (j
= 0; j
< decimal_digits
; j
++)
2007 digits
[j
] = SHIFT (digits
[j
]);
2010 /* Take the next nibble off the input and add it to what
2011 * we've got in the LSB position. Bottom 'digit' is now
2012 * between 0 and 159.
2014 * "flip" is used to run this loop twice for each byte.
2018 /* Take top nibble. */
2020 digits
[0] += HIGH_NIBBLE (*p
);
2025 /* Take low nibble and bump our pointer "p". */
2027 digits
[0] += LOW_NIBBLE (*p
);
2028 if (byte_order
== BFD_ENDIAN_BIG
)
2035 /* Re-decimalize. We have to do this often enough
2036 * that we don't overflow, but once per nibble is
2037 * overkill. Easier this way, though. Note that the
2038 * carry is often larger than 10 (e.g. max initial
2039 * carry out of lowest nibble is 15, could bubble all
2040 * the way up greater than 10). So we have to do
2041 * the carrying beyond the last current digit.
2044 for (j
= 0; j
< decimal_len
- 1; j
++)
2048 /* "/" won't handle an unsigned char with
2049 * a value that if signed would be negative.
2050 * So extend to longword int via "dummy".
2053 carry
= CARRY_OUT (dummy
);
2054 digits
[j
] = CARRY_LEFT (dummy
);
2056 if (j
>= decimal_digits
&& carry
== 0)
2059 * All higher digits are 0 and we
2060 * no longer have a carry.
2062 * Note: "j" is 0-based, "decimal_digits" is
2065 decimal_digits
= j
+ 1;
2071 /* Ok, now "digits" is the decimal representation, with
2072 the "decimal_digits" actual digits. Print! */
2074 for (i
= decimal_digits
- 1; i
> 0 && digits
[i
] == 0; --i
)
2079 fprintf_filtered (stream
, "%1d", digits
[i
]);
2083 /* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */
2086 print_hex_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
2087 unsigned len
, enum bfd_endian byte_order
,
2092 fputs_filtered ("0x", stream
);
2093 if (byte_order
== BFD_ENDIAN_BIG
)
2099 /* Strip leading 0 bytes, but be sure to leave at least a
2100 single byte at the end. */
2101 for (; p
< valaddr
+ len
- 1 && !*p
; ++p
)
2105 const gdb_byte
*first
= p
;
2110 /* When not zero-padding, use a different format for the
2111 very first byte printed. */
2112 if (!zero_pad
&& p
== first
)
2113 fprintf_filtered (stream
, "%x", *p
);
2115 fprintf_filtered (stream
, "%02x", *p
);
2120 p
= valaddr
+ len
- 1;
2124 /* Strip leading 0 bytes, but be sure to leave at least a
2125 single byte at the end. */
2126 for (; p
>= valaddr
+ 1 && !*p
; --p
)
2130 const gdb_byte
*first
= p
;
2135 /* When not zero-padding, use a different format for the
2136 very first byte printed. */
2137 if (!zero_pad
&& p
== first
)
2138 fprintf_filtered (stream
, "%x", *p
);
2140 fprintf_filtered (stream
, "%02x", *p
);
2145 /* VALADDR points to a char integer of LEN bytes.
2146 Print it out in appropriate language form on stream.
2147 Omit any leading zero chars. */
2150 print_char_chars (struct ui_file
*stream
, struct type
*type
,
2151 const gdb_byte
*valaddr
,
2152 unsigned len
, enum bfd_endian byte_order
)
2156 if (byte_order
== BFD_ENDIAN_BIG
)
2159 while (p
< valaddr
+ len
- 1 && *p
== 0)
2162 while (p
< valaddr
+ len
)
2164 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
2170 p
= valaddr
+ len
- 1;
2171 while (p
> valaddr
&& *p
== 0)
2174 while (p
>= valaddr
)
2176 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
2182 /* Print function pointer with inferior address ADDRESS onto stdio
2186 print_function_pointer_address (const struct value_print_options
*options
,
2187 struct gdbarch
*gdbarch
,
2189 struct ui_file
*stream
)
2192 = gdbarch_convert_from_func_ptr_addr (gdbarch
, address
,
2193 current_top_target ());
2195 /* If the function pointer is represented by a description, print
2196 the address of the description. */
2197 if (options
->addressprint
&& func_addr
!= address
)
2199 fputs_filtered ("@", stream
);
2200 fputs_filtered (paddress (gdbarch
, address
), stream
);
2201 fputs_filtered (": ", stream
);
2203 print_address_demangle (options
, gdbarch
, func_addr
, stream
, demangle
);
2207 /* Print on STREAM using the given OPTIONS the index for the element
2208 at INDEX of an array whose index type is INDEX_TYPE. */
2211 maybe_print_array_index (struct type
*index_type
, LONGEST index
,
2212 struct ui_file
*stream
,
2213 const struct value_print_options
*options
)
2215 struct value
*index_value
;
2217 if (!options
->print_array_indexes
)
2220 index_value
= value_from_longest (index_type
, index
);
2222 LA_PRINT_ARRAY_INDEX (index_value
, stream
, options
);
2225 /* Called by various <lang>_val_print routines to print elements of an
2226 array in the form "<elem1>, <elem2>, <elem3>, ...".
2228 (FIXME?) Assumes array element separator is a comma, which is correct
2229 for all languages currently handled.
2230 (FIXME?) Some languages have a notation for repeated array elements,
2231 perhaps we should try to use that notation when appropriate. */
2234 val_print_array_elements (struct type
*type
,
2235 LONGEST embedded_offset
,
2236 CORE_ADDR address
, struct ui_file
*stream
,
2239 const struct value_print_options
*options
,
2242 unsigned int things_printed
= 0;
2244 struct type
*elttype
, *index_type
, *base_index_type
;
2246 /* Position of the array element we are examining to see
2247 whether it is repeated. */
2249 /* Number of repetitions we have detected so far. */
2251 LONGEST low_bound
, high_bound
;
2252 LONGEST low_pos
, high_pos
;
2254 elttype
= TYPE_TARGET_TYPE (type
);
2255 eltlen
= type_length_units (check_typedef (elttype
));
2256 index_type
= TYPE_INDEX_TYPE (type
);
2258 if (get_array_bounds (type
, &low_bound
, &high_bound
))
2260 if (TYPE_CODE (index_type
) == TYPE_CODE_RANGE
)
2261 base_index_type
= TYPE_TARGET_TYPE (index_type
);
2263 base_index_type
= index_type
;
2265 /* Non-contiguous enumerations types can by used as index types
2266 in some languages (e.g. Ada). In this case, the array length
2267 shall be computed from the positions of the first and last
2268 literal in the enumeration type, and not from the values
2269 of these literals. */
2270 if (!discrete_position (base_index_type
, low_bound
, &low_pos
)
2271 || !discrete_position (base_index_type
, high_bound
, &high_pos
))
2273 warning (_("unable to get positions in array, use bounds instead"));
2274 low_pos
= low_bound
;
2275 high_pos
= high_bound
;
2278 /* The array length should normally be HIGH_POS - LOW_POS + 1.
2279 But we have to be a little extra careful, because some languages
2280 such as Ada allow LOW_POS to be greater than HIGH_POS for
2281 empty arrays. In that situation, the array length is just zero,
2283 if (low_pos
> high_pos
)
2286 len
= high_pos
- low_pos
+ 1;
2290 warning (_("unable to get bounds of array, assuming null array"));
2295 annotate_array_section_begin (i
, elttype
);
2297 for (; i
< len
&& things_printed
< options
->print_max
; i
++)
2301 if (options
->prettyformat_arrays
)
2303 fprintf_filtered (stream
, ",\n");
2304 print_spaces_filtered (2 + 2 * recurse
, stream
);
2308 fprintf_filtered (stream
, ", ");
2311 wrap_here (n_spaces (2 + 2 * recurse
));
2312 maybe_print_array_index (index_type
, i
+ low_bound
,
2317 /* Only check for reps if repeat_count_threshold is not set to
2318 UINT_MAX (unlimited). */
2319 if (options
->repeat_count_threshold
< UINT_MAX
)
2322 && value_contents_eq (val
,
2323 embedded_offset
+ i
* eltlen
,
2334 if (reps
> options
->repeat_count_threshold
)
2336 val_print (elttype
, embedded_offset
+ i
* eltlen
,
2337 address
, stream
, recurse
+ 1, val
, options
,
2339 annotate_elt_rep (reps
);
2340 fprintf_filtered (stream
, " %p[<repeats %u times>%p]",
2341 metadata_style
.style ().ptr (), reps
, nullptr);
2342 annotate_elt_rep_end ();
2345 things_printed
+= options
->repeat_count_threshold
;
2349 val_print (elttype
, embedded_offset
+ i
* eltlen
,
2351 stream
, recurse
+ 1, val
, options
, current_language
);
2356 annotate_array_section_end ();
2359 fprintf_filtered (stream
, "...");
2363 /* See valprint.h. */
2366 value_print_array_elements (struct value
*val
, struct ui_file
*stream
,
2368 const struct value_print_options
*options
,
2371 unsigned int things_printed
= 0;
2373 struct type
*elttype
, *index_type
, *base_index_type
;
2375 /* Position of the array element we are examining to see
2376 whether it is repeated. */
2378 /* Number of repetitions we have detected so far. */
2380 LONGEST low_bound
, high_bound
;
2381 LONGEST low_pos
, high_pos
;
2383 struct type
*type
= check_typedef (value_type (val
));
2385 elttype
= TYPE_TARGET_TYPE (type
);
2386 eltlen
= type_length_units (check_typedef (elttype
));
2387 index_type
= TYPE_INDEX_TYPE (type
);
2389 if (get_array_bounds (type
, &low_bound
, &high_bound
))
2391 if (TYPE_CODE (index_type
) == TYPE_CODE_RANGE
)
2392 base_index_type
= TYPE_TARGET_TYPE (index_type
);
2394 base_index_type
= index_type
;
2396 /* Non-contiguous enumerations types can by used as index types
2397 in some languages (e.g. Ada). In this case, the array length
2398 shall be computed from the positions of the first and last
2399 literal in the enumeration type, and not from the values
2400 of these literals. */
2401 if (!discrete_position (base_index_type
, low_bound
, &low_pos
)
2402 || !discrete_position (base_index_type
, high_bound
, &high_pos
))
2404 warning (_("unable to get positions in array, use bounds instead"));
2405 low_pos
= low_bound
;
2406 high_pos
= high_bound
;
2409 /* The array length should normally be HIGH_POS - LOW_POS + 1.
2410 But we have to be a little extra careful, because some languages
2411 such as Ada allow LOW_POS to be greater than HIGH_POS for
2412 empty arrays. In that situation, the array length is just zero,
2414 if (low_pos
> high_pos
)
2417 len
= high_pos
- low_pos
+ 1;
2421 warning (_("unable to get bounds of array, assuming null array"));
2426 annotate_array_section_begin (i
, elttype
);
2428 for (; i
< len
&& things_printed
< options
->print_max
; i
++)
2430 scoped_value_mark free_values
;
2434 if (options
->prettyformat_arrays
)
2436 fprintf_filtered (stream
, ",\n");
2437 print_spaces_filtered (2 + 2 * recurse
, stream
);
2440 fprintf_filtered (stream
, ", ");
2442 wrap_here (n_spaces (2 + 2 * recurse
));
2443 maybe_print_array_index (index_type
, i
+ low_bound
,
2448 /* Only check for reps if repeat_count_threshold is not set to
2449 UINT_MAX (unlimited). */
2450 if (options
->repeat_count_threshold
< UINT_MAX
)
2453 && value_contents_eq (val
, i
* eltlen
,
2462 struct value
*element
= value_from_component (val
, elttype
, eltlen
* i
);
2463 common_val_print (element
, stream
, recurse
+ 1, options
,
2466 if (reps
> options
->repeat_count_threshold
)
2468 annotate_elt_rep (reps
);
2469 fprintf_filtered (stream
, " %p[<repeats %u times>%p]",
2470 metadata_style
.style ().ptr (), reps
, nullptr);
2471 annotate_elt_rep_end ();
2474 things_printed
+= options
->repeat_count_threshold
;
2482 annotate_array_section_end ();
2484 fprintf_filtered (stream
, "...");
2487 /* Read LEN bytes of target memory at address MEMADDR, placing the
2488 results in GDB's memory at MYADDR. Returns a count of the bytes
2489 actually read, and optionally a target_xfer_status value in the
2490 location pointed to by ERRPTR if ERRPTR is non-null. */
2492 /* FIXME: cagney/1999-10-14: Only used by val_print_string. Can this
2493 function be eliminated. */
2496 partial_memory_read (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
2497 int len
, int *errptr
)
2499 int nread
; /* Number of bytes actually read. */
2500 int errcode
; /* Error from last read. */
2502 /* First try a complete read. */
2503 errcode
= target_read_memory (memaddr
, myaddr
, len
);
2511 /* Loop, reading one byte at a time until we get as much as we can. */
2512 for (errcode
= 0, nread
= 0; len
> 0 && errcode
== 0; nread
++, len
--)
2514 errcode
= target_read_memory (memaddr
++, myaddr
++, 1);
2516 /* If an error, the last read was unsuccessful, so adjust count. */
2529 /* Read a string from the inferior, at ADDR, with LEN characters of
2530 WIDTH bytes each. Fetch at most FETCHLIMIT characters. BUFFER
2531 will be set to a newly allocated buffer containing the string, and
2532 BYTES_READ will be set to the number of bytes read. Returns 0 on
2533 success, or a target_xfer_status on failure.
2535 If LEN > 0, reads the lesser of LEN or FETCHLIMIT characters
2536 (including eventual NULs in the middle or end of the string).
2538 If LEN is -1, stops at the first null character (not necessarily
2539 the first null byte) up to a maximum of FETCHLIMIT characters. Set
2540 FETCHLIMIT to UINT_MAX to read as many characters as possible from
2543 Unless an exception is thrown, BUFFER will always be allocated, even on
2544 failure. In this case, some characters might have been read before the
2545 failure happened. Check BYTES_READ to recognize this situation.
2547 Note: There was a FIXME asking to make this code use target_read_string,
2548 but this function is more general (can read past null characters, up to
2549 given LEN). Besides, it is used much more often than target_read_string
2550 so it is more tested. Perhaps callers of target_read_string should use
2551 this function instead? */
2554 read_string (CORE_ADDR addr
, int len
, int width
, unsigned int fetchlimit
,
2555 enum bfd_endian byte_order
, gdb::unique_xmalloc_ptr
<gdb_byte
> *buffer
,
2558 int errcode
; /* Errno returned from bad reads. */
2559 unsigned int nfetch
; /* Chars to fetch / chars fetched. */
2560 gdb_byte
*bufptr
; /* Pointer to next available byte in
2563 /* Loop until we either have all the characters, or we encounter
2564 some error, such as bumping into the end of the address space. */
2566 buffer
->reset (nullptr);
2570 /* We want fetchlimit chars, so we might as well read them all in
2572 unsigned int fetchlen
= std::min ((unsigned) len
, fetchlimit
);
2574 buffer
->reset ((gdb_byte
*) xmalloc (fetchlen
* width
));
2575 bufptr
= buffer
->get ();
2577 nfetch
= partial_memory_read (addr
, bufptr
, fetchlen
* width
, &errcode
)
2579 addr
+= nfetch
* width
;
2580 bufptr
+= nfetch
* width
;
2584 unsigned long bufsize
= 0;
2585 unsigned int chunksize
; /* Size of each fetch, in chars. */
2586 int found_nul
; /* Non-zero if we found the nul char. */
2587 gdb_byte
*limit
; /* First location past end of fetch buffer. */
2590 /* We are looking for a NUL terminator to end the fetching, so we
2591 might as well read in blocks that are large enough to be efficient,
2592 but not so large as to be slow if fetchlimit happens to be large.
2593 So we choose the minimum of 8 and fetchlimit. We used to use 200
2594 instead of 8 but 200 is way too big for remote debugging over a
2596 chunksize
= std::min (8u, fetchlimit
);
2601 nfetch
= std::min ((unsigned long) chunksize
, fetchlimit
- bufsize
);
2603 if (*buffer
== NULL
)
2604 buffer
->reset ((gdb_byte
*) xmalloc (nfetch
* width
));
2606 buffer
->reset ((gdb_byte
*) xrealloc (buffer
->release (),
2607 (nfetch
+ bufsize
) * width
));
2609 bufptr
= buffer
->get () + bufsize
* width
;
2612 /* Read as much as we can. */
2613 nfetch
= partial_memory_read (addr
, bufptr
, nfetch
* width
, &errcode
)
2616 /* Scan this chunk for the null character that terminates the string
2617 to print. If found, we don't need to fetch any more. Note
2618 that bufptr is explicitly left pointing at the next character
2619 after the null character, or at the next character after the end
2622 limit
= bufptr
+ nfetch
* width
;
2623 while (bufptr
< limit
)
2627 c
= extract_unsigned_integer (bufptr
, width
, byte_order
);
2632 /* We don't care about any error which happened after
2633 the NUL terminator. */
2640 while (errcode
== 0 /* no error */
2641 && bufptr
- buffer
->get () < fetchlimit
* width
/* no overrun */
2642 && !found_nul
); /* haven't found NUL yet */
2645 { /* Length of string is really 0! */
2646 /* We always allocate *buffer. */
2647 buffer
->reset ((gdb_byte
*) xmalloc (1));
2648 bufptr
= buffer
->get ();
2652 /* bufptr and addr now point immediately beyond the last byte which we
2653 consider part of the string (including a '\0' which ends the string). */
2654 *bytes_read
= bufptr
- buffer
->get ();
2661 /* Return true if print_wchar can display W without resorting to a
2662 numeric escape, false otherwise. */
2665 wchar_printable (gdb_wchar_t w
)
2667 return (gdb_iswprint (w
)
2668 || w
== LCST ('\a') || w
== LCST ('\b')
2669 || w
== LCST ('\f') || w
== LCST ('\n')
2670 || w
== LCST ('\r') || w
== LCST ('\t')
2671 || w
== LCST ('\v'));
2674 /* A helper function that converts the contents of STRING to wide
2675 characters and then appends them to OUTPUT. */
2678 append_string_as_wide (const char *string
,
2679 struct obstack
*output
)
2681 for (; *string
; ++string
)
2683 gdb_wchar_t w
= gdb_btowc (*string
);
2684 obstack_grow (output
, &w
, sizeof (gdb_wchar_t
));
2688 /* Print a wide character W to OUTPUT. ORIG is a pointer to the
2689 original (target) bytes representing the character, ORIG_LEN is the
2690 number of valid bytes. WIDTH is the number of bytes in a base
2691 characters of the type. OUTPUT is an obstack to which wide
2692 characters are emitted. QUOTER is a (narrow) character indicating
2693 the style of quotes surrounding the character to be printed.
2694 NEED_ESCAPE is an in/out flag which is used to track numeric
2695 escapes across calls. */
2698 print_wchar (gdb_wint_t w
, const gdb_byte
*orig
,
2699 int orig_len
, int width
,
2700 enum bfd_endian byte_order
,
2701 struct obstack
*output
,
2702 int quoter
, int *need_escapep
)
2704 int need_escape
= *need_escapep
;
2708 /* iswprint implementation on Windows returns 1 for tab character.
2709 In order to avoid different printout on this host, we explicitly
2710 use wchar_printable function. */
2714 obstack_grow_wstr (output
, LCST ("\\a"));
2717 obstack_grow_wstr (output
, LCST ("\\b"));
2720 obstack_grow_wstr (output
, LCST ("\\f"));
2723 obstack_grow_wstr (output
, LCST ("\\n"));
2726 obstack_grow_wstr (output
, LCST ("\\r"));
2729 obstack_grow_wstr (output
, LCST ("\\t"));
2732 obstack_grow_wstr (output
, LCST ("\\v"));
2736 if (wchar_printable (w
) && (!need_escape
|| (!gdb_iswdigit (w
)
2738 && w
!= LCST ('9'))))
2740 gdb_wchar_t wchar
= w
;
2742 if (w
== gdb_btowc (quoter
) || w
== LCST ('\\'))
2743 obstack_grow_wstr (output
, LCST ("\\"));
2744 obstack_grow (output
, &wchar
, sizeof (gdb_wchar_t
));
2750 for (i
= 0; i
+ width
<= orig_len
; i
+= width
)
2755 value
= extract_unsigned_integer (&orig
[i
], width
,
2757 /* If the value fits in 3 octal digits, print it that
2758 way. Otherwise, print it as a hex escape. */
2760 xsnprintf (octal
, sizeof (octal
), "\\%.3o",
2761 (int) (value
& 0777));
2763 xsnprintf (octal
, sizeof (octal
), "\\x%lx", (long) value
);
2764 append_string_as_wide (octal
, output
);
2766 /* If we somehow have extra bytes, print them now. */
2767 while (i
< orig_len
)
2771 xsnprintf (octal
, sizeof (octal
), "\\%.3o", orig
[i
] & 0xff);
2772 append_string_as_wide (octal
, output
);
2783 /* Print the character C on STREAM as part of the contents of a
2784 literal string whose delimiter is QUOTER. ENCODING names the
2788 generic_emit_char (int c
, struct type
*type
, struct ui_file
*stream
,
2789 int quoter
, const char *encoding
)
2791 enum bfd_endian byte_order
2792 = type_byte_order (type
);
2794 int need_escape
= 0;
2796 c_buf
= (gdb_byte
*) alloca (TYPE_LENGTH (type
));
2797 pack_long (c_buf
, type
, c
);
2799 wchar_iterator
iter (c_buf
, TYPE_LENGTH (type
), encoding
, TYPE_LENGTH (type
));
2801 /* This holds the printable form of the wchar_t data. */
2802 auto_obstack wchar_buf
;
2808 const gdb_byte
*buf
;
2810 int print_escape
= 1;
2811 enum wchar_iterate_result result
;
2813 num_chars
= iter
.iterate (&result
, &chars
, &buf
, &buflen
);
2818 /* If all characters are printable, print them. Otherwise,
2819 we're going to have to print an escape sequence. We
2820 check all characters because we want to print the target
2821 bytes in the escape sequence, and we don't know character
2822 boundaries there. */
2826 for (i
= 0; i
< num_chars
; ++i
)
2827 if (!wchar_printable (chars
[i
]))
2835 for (i
= 0; i
< num_chars
; ++i
)
2836 print_wchar (chars
[i
], buf
, buflen
,
2837 TYPE_LENGTH (type
), byte_order
,
2838 &wchar_buf
, quoter
, &need_escape
);
2842 /* This handles the NUM_CHARS == 0 case as well. */
2844 print_wchar (gdb_WEOF
, buf
, buflen
, TYPE_LENGTH (type
),
2845 byte_order
, &wchar_buf
, quoter
, &need_escape
);
2848 /* The output in the host encoding. */
2849 auto_obstack output
;
2851 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2852 (gdb_byte
*) obstack_base (&wchar_buf
),
2853 obstack_object_size (&wchar_buf
),
2854 sizeof (gdb_wchar_t
), &output
, translit_char
);
2855 obstack_1grow (&output
, '\0');
2857 fputs_filtered ((const char *) obstack_base (&output
), stream
);
2860 /* Return the repeat count of the next character/byte in ITER,
2861 storing the result in VEC. */
2864 count_next_character (wchar_iterator
*iter
,
2865 std::vector
<converted_character
> *vec
)
2867 struct converted_character
*current
;
2871 struct converted_character tmp
;
2875 = iter
->iterate (&tmp
.result
, &chars
, &tmp
.buf
, &tmp
.buflen
);
2876 if (tmp
.num_chars
> 0)
2878 gdb_assert (tmp
.num_chars
< MAX_WCHARS
);
2879 memcpy (tmp
.chars
, chars
, tmp
.num_chars
* sizeof (gdb_wchar_t
));
2881 vec
->push_back (tmp
);
2884 current
= &vec
->back ();
2886 /* Count repeated characters or bytes. */
2887 current
->repeat_count
= 1;
2888 if (current
->num_chars
== -1)
2896 struct converted_character d
;
2903 /* Get the next character. */
2904 d
.num_chars
= iter
->iterate (&d
.result
, &chars
, &d
.buf
, &d
.buflen
);
2906 /* If a character was successfully converted, save the character
2907 into the converted character. */
2908 if (d
.num_chars
> 0)
2910 gdb_assert (d
.num_chars
< MAX_WCHARS
);
2911 memcpy (d
.chars
, chars
, WCHAR_BUFLEN (d
.num_chars
));
2914 /* Determine if the current character is the same as this
2916 if (d
.num_chars
== current
->num_chars
&& d
.result
== current
->result
)
2918 /* There are two cases to consider:
2920 1) Equality of converted character (num_chars > 0)
2921 2) Equality of non-converted character (num_chars == 0) */
2922 if ((current
->num_chars
> 0
2923 && memcmp (current
->chars
, d
.chars
,
2924 WCHAR_BUFLEN (current
->num_chars
)) == 0)
2925 || (current
->num_chars
== 0
2926 && current
->buflen
== d
.buflen
2927 && memcmp (current
->buf
, d
.buf
, current
->buflen
) == 0))
2928 ++current
->repeat_count
;
2936 /* Push this next converted character onto the result vector. */
2937 repeat
= current
->repeat_count
;
2943 /* Print the characters in CHARS to the OBSTACK. QUOTE_CHAR is the quote
2944 character to use with string output. WIDTH is the size of the output
2945 character type. BYTE_ORDER is the target byte order. OPTIONS
2946 is the user's print options. */
2949 print_converted_chars_to_obstack (struct obstack
*obstack
,
2950 const std::vector
<converted_character
> &chars
,
2951 int quote_char
, int width
,
2952 enum bfd_endian byte_order
,
2953 const struct value_print_options
*options
)
2956 const converted_character
*elem
;
2957 enum {START
, SINGLE
, REPEAT
, INCOMPLETE
, FINISH
} state
, last
;
2958 gdb_wchar_t wide_quote_char
= gdb_btowc (quote_char
);
2959 int need_escape
= 0;
2961 /* Set the start state. */
2963 last
= state
= START
;
2971 /* Nothing to do. */
2978 /* We are outputting a single character
2979 (< options->repeat_count_threshold). */
2983 /* We were outputting some other type of content, so we
2984 must output and a comma and a quote. */
2986 obstack_grow_wstr (obstack
, LCST (", "));
2987 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2989 /* Output the character. */
2990 for (j
= 0; j
< elem
->repeat_count
; ++j
)
2992 if (elem
->result
== wchar_iterate_ok
)
2993 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2994 byte_order
, obstack
, quote_char
, &need_escape
);
2996 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2997 byte_order
, obstack
, quote_char
, &need_escape
);
3006 /* We are outputting a character with a repeat count
3007 greater than options->repeat_count_threshold. */
3011 /* We were outputting a single string. Terminate the
3013 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
3016 obstack_grow_wstr (obstack
, LCST (", "));
3018 /* Output the character and repeat string. */
3019 obstack_grow_wstr (obstack
, LCST ("'"));
3020 if (elem
->result
== wchar_iterate_ok
)
3021 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
3022 byte_order
, obstack
, quote_char
, &need_escape
);
3024 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
3025 byte_order
, obstack
, quote_char
, &need_escape
);
3026 obstack_grow_wstr (obstack
, LCST ("'"));
3027 std::string s
= string_printf (_(" <repeats %u times>"),
3028 elem
->repeat_count
);
3029 for (j
= 0; s
[j
]; ++j
)
3031 gdb_wchar_t w
= gdb_btowc (s
[j
]);
3032 obstack_grow (obstack
, &w
, sizeof (gdb_wchar_t
));
3038 /* We are outputting an incomplete sequence. */
3041 /* If we were outputting a string of SINGLE characters,
3042 terminate the quote. */
3043 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
3046 obstack_grow_wstr (obstack
, LCST (", "));
3048 /* Output the incomplete sequence string. */
3049 obstack_grow_wstr (obstack
, LCST ("<incomplete sequence "));
3050 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
, byte_order
,
3051 obstack
, 0, &need_escape
);
3052 obstack_grow_wstr (obstack
, LCST (">"));
3054 /* We do not attempt to output anything after this. */
3059 /* All done. If we were outputting a string of SINGLE
3060 characters, the string must be terminated. Otherwise,
3061 REPEAT and INCOMPLETE are always left properly terminated. */
3063 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
3068 /* Get the next element and state. */
3070 if (state
!= FINISH
)
3072 elem
= &chars
[idx
++];
3073 switch (elem
->result
)
3075 case wchar_iterate_ok
:
3076 case wchar_iterate_invalid
:
3077 if (elem
->repeat_count
> options
->repeat_count_threshold
)
3083 case wchar_iterate_incomplete
:
3087 case wchar_iterate_eof
:
3095 /* Print the character string STRING, printing at most LENGTH
3096 characters. LENGTH is -1 if the string is nul terminated. TYPE is
3097 the type of each character. OPTIONS holds the printing options;
3098 printing stops early if the number hits print_max; repeat counts
3099 are printed as appropriate. Print ellipses at the end if we had to
3100 stop before printing LENGTH characters, or if FORCE_ELLIPSES.
3101 QUOTE_CHAR is the character to print at each end of the string. If
3102 C_STYLE_TERMINATOR is true, and the last character is 0, then it is
3106 generic_printstr (struct ui_file
*stream
, struct type
*type
,
3107 const gdb_byte
*string
, unsigned int length
,
3108 const char *encoding
, int force_ellipses
,
3109 int quote_char
, int c_style_terminator
,
3110 const struct value_print_options
*options
)
3112 enum bfd_endian byte_order
= type_byte_order (type
);
3114 int width
= TYPE_LENGTH (type
);
3116 struct converted_character
*last
;
3120 unsigned long current_char
= 1;
3122 for (i
= 0; current_char
; ++i
)
3125 current_char
= extract_unsigned_integer (string
+ i
* width
,
3131 /* If the string was not truncated due to `set print elements', and
3132 the last byte of it is a null, we don't print that, in
3133 traditional C style. */
3134 if (c_style_terminator
3137 && (extract_unsigned_integer (string
+ (length
- 1) * width
,
3138 width
, byte_order
) == 0))
3143 fputs_filtered ("\"\"", stream
);
3147 /* Arrange to iterate over the characters, in wchar_t form. */
3148 wchar_iterator
iter (string
, length
* width
, encoding
, width
);
3149 std::vector
<converted_character
> converted_chars
;
3151 /* Convert characters until the string is over or the maximum
3152 number of printed characters has been reached. */
3154 while (i
< options
->print_max
)
3160 /* Grab the next character and repeat count. */
3161 r
= count_next_character (&iter
, &converted_chars
);
3163 /* If less than zero, the end of the input string was reached. */
3167 /* Otherwise, add the count to the total print count and get
3168 the next character. */
3172 /* Get the last element and determine if the entire string was
3174 last
= &converted_chars
.back ();
3175 finished
= (last
->result
== wchar_iterate_eof
);
3177 /* Ensure that CONVERTED_CHARS is terminated. */
3178 last
->result
= wchar_iterate_eof
;
3180 /* WCHAR_BUF is the obstack we use to represent the string in
3182 auto_obstack wchar_buf
;
3184 /* Print the output string to the obstack. */
3185 print_converted_chars_to_obstack (&wchar_buf
, converted_chars
, quote_char
,
3186 width
, byte_order
, options
);
3188 if (force_ellipses
|| !finished
)
3189 obstack_grow_wstr (&wchar_buf
, LCST ("..."));
3191 /* OUTPUT is where we collect `char's for printing. */
3192 auto_obstack output
;
3194 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
3195 (gdb_byte
*) obstack_base (&wchar_buf
),
3196 obstack_object_size (&wchar_buf
),
3197 sizeof (gdb_wchar_t
), &output
, translit_char
);
3198 obstack_1grow (&output
, '\0');
3200 fputs_filtered ((const char *) obstack_base (&output
), stream
);
3203 /* Print a string from the inferior, starting at ADDR and printing up to LEN
3204 characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing
3205 stops at the first null byte, otherwise printing proceeds (including null
3206 bytes) until either print_max or LEN characters have been printed,
3207 whichever is smaller. ENCODING is the name of the string's
3208 encoding. It can be NULL, in which case the target encoding is
3212 val_print_string (struct type
*elttype
, const char *encoding
,
3213 CORE_ADDR addr
, int len
,
3214 struct ui_file
*stream
,
3215 const struct value_print_options
*options
)
3217 int force_ellipsis
= 0; /* Force ellipsis to be printed if nonzero. */
3218 int err
; /* Non-zero if we got a bad read. */
3219 int found_nul
; /* Non-zero if we found the nul char. */
3220 unsigned int fetchlimit
; /* Maximum number of chars to print. */
3222 gdb::unique_xmalloc_ptr
<gdb_byte
> buffer
; /* Dynamically growable fetch buffer. */
3223 struct gdbarch
*gdbarch
= get_type_arch (elttype
);
3224 enum bfd_endian byte_order
= type_byte_order (elttype
);
3225 int width
= TYPE_LENGTH (elttype
);
3227 /* First we need to figure out the limit on the number of characters we are
3228 going to attempt to fetch and print. This is actually pretty simple. If
3229 LEN >= zero, then the limit is the minimum of LEN and print_max. If
3230 LEN is -1, then the limit is print_max. This is true regardless of
3231 whether print_max is zero, UINT_MAX (unlimited), or something in between,
3232 because finding the null byte (or available memory) is what actually
3233 limits the fetch. */
3235 fetchlimit
= (len
== -1 ? options
->print_max
: std::min ((unsigned) len
,
3236 options
->print_max
));
3238 err
= read_string (addr
, len
, width
, fetchlimit
, byte_order
,
3239 &buffer
, &bytes_read
);
3243 /* We now have either successfully filled the buffer to fetchlimit,
3244 or terminated early due to an error or finding a null char when
3247 /* Determine found_nul by looking at the last character read. */
3249 if (bytes_read
>= width
)
3250 found_nul
= extract_unsigned_integer (buffer
.get () + bytes_read
- width
,
3251 width
, byte_order
) == 0;
3252 if (len
== -1 && !found_nul
)
3256 /* We didn't find a NUL terminator we were looking for. Attempt
3257 to peek at the next character. If not successful, or it is not
3258 a null byte, then force ellipsis to be printed. */
3260 peekbuf
= (gdb_byte
*) alloca (width
);
3262 if (target_read_memory (addr
, peekbuf
, width
) == 0
3263 && extract_unsigned_integer (peekbuf
, width
, byte_order
) != 0)
3266 else if ((len
>= 0 && err
!= 0) || (len
> bytes_read
/ width
))
3268 /* Getting an error when we have a requested length, or fetching less
3269 than the number of characters actually requested, always make us
3274 /* If we get an error before fetching anything, don't print a string.
3275 But if we fetch something and then get an error, print the string
3276 and then the error message. */
3277 if (err
== 0 || bytes_read
> 0)
3279 LA_PRINT_STRING (stream
, elttype
, buffer
.get (), bytes_read
/ width
,
3280 encoding
, force_ellipsis
, options
);
3285 std::string str
= memory_error_message (TARGET_XFER_E_IO
, gdbarch
, addr
);
3287 fprintf_filtered (stream
, _("<error: %ps>"),
3288 styled_string (metadata_style
.style (),
3292 return (bytes_read
/ width
);
3295 /* Handle 'show print max-depth'. */
3298 show_print_max_depth (struct ui_file
*file
, int from_tty
,
3299 struct cmd_list_element
*c
, const char *value
)
3301 fprintf_filtered (file
, _("Maximum print depth is %s.\n"), value
);
3305 /* The 'set input-radix' command writes to this auxiliary variable.
3306 If the requested radix is valid, INPUT_RADIX is updated; otherwise,
3307 it is left unchanged. */
3309 static unsigned input_radix_1
= 10;
3311 /* Validate an input or output radix setting, and make sure the user
3312 knows what they really did here. Radix setting is confusing, e.g.
3313 setting the input radix to "10" never changes it! */
3316 set_input_radix (const char *args
, int from_tty
, struct cmd_list_element
*c
)
3318 set_input_radix_1 (from_tty
, input_radix_1
);
3322 set_input_radix_1 (int from_tty
, unsigned radix
)
3324 /* We don't currently disallow any input radix except 0 or 1, which don't
3325 make any mathematical sense. In theory, we can deal with any input
3326 radix greater than 1, even if we don't have unique digits for every
3327 value from 0 to radix-1, but in practice we lose on large radix values.
3328 We should either fix the lossage or restrict the radix range more.
3333 input_radix_1
= input_radix
;
3334 error (_("Nonsense input radix ``decimal %u''; input radix unchanged."),
3337 input_radix_1
= input_radix
= radix
;
3340 printf_filtered (_("Input radix now set to "
3341 "decimal %u, hex %x, octal %o.\n"),
3342 radix
, radix
, radix
);
3346 /* The 'set output-radix' command writes to this auxiliary variable.
3347 If the requested radix is valid, OUTPUT_RADIX is updated,
3348 otherwise, it is left unchanged. */
3350 static unsigned output_radix_1
= 10;
3353 set_output_radix (const char *args
, int from_tty
, struct cmd_list_element
*c
)
3355 set_output_radix_1 (from_tty
, output_radix_1
);
3359 set_output_radix_1 (int from_tty
, unsigned radix
)
3361 /* Validate the radix and disallow ones that we aren't prepared to
3362 handle correctly, leaving the radix unchanged. */
3366 user_print_options
.output_format
= 'x'; /* hex */
3369 user_print_options
.output_format
= 0; /* decimal */
3372 user_print_options
.output_format
= 'o'; /* octal */
3375 output_radix_1
= output_radix
;
3376 error (_("Unsupported output radix ``decimal %u''; "
3377 "output radix unchanged."),
3380 output_radix_1
= output_radix
= radix
;
3383 printf_filtered (_("Output radix now set to "
3384 "decimal %u, hex %x, octal %o.\n"),
3385 radix
, radix
, radix
);
3389 /* Set both the input and output radix at once. Try to set the output radix
3390 first, since it has the most restrictive range. An radix that is valid as
3391 an output radix is also valid as an input radix.
3393 It may be useful to have an unusual input radix. If the user wishes to
3394 set an input radix that is not valid as an output radix, he needs to use
3395 the 'set input-radix' command. */
3398 set_radix (const char *arg
, int from_tty
)
3402 radix
= (arg
== NULL
) ? 10 : parse_and_eval_long (arg
);
3403 set_output_radix_1 (0, radix
);
3404 set_input_radix_1 (0, radix
);
3407 printf_filtered (_("Input and output radices now set to "
3408 "decimal %u, hex %x, octal %o.\n"),
3409 radix
, radix
, radix
);
3413 /* Show both the input and output radices. */
3416 show_radix (const char *arg
, int from_tty
)
3420 if (input_radix
== output_radix
)
3422 printf_filtered (_("Input and output radices set to "
3423 "decimal %u, hex %x, octal %o.\n"),
3424 input_radix
, input_radix
, input_radix
);
3428 printf_filtered (_("Input radix set to decimal "
3429 "%u, hex %x, octal %o.\n"),
3430 input_radix
, input_radix
, input_radix
);
3431 printf_filtered (_("Output radix set to decimal "
3432 "%u, hex %x, octal %o.\n"),
3433 output_radix
, output_radix
, output_radix
);
3440 set_print (const char *arg
, int from_tty
)
3443 "\"set print\" must be followed by the name of a print subcommand.\n");
3444 help_list (setprintlist
, "set print ", all_commands
, gdb_stdout
);
3448 show_print (const char *args
, int from_tty
)
3450 cmd_show_list (showprintlist
, from_tty
, "");
3454 set_print_raw (const char *arg
, int from_tty
)
3457 "\"set print raw\" must be followed by the name of a \"print raw\" subcommand.\n");
3458 help_list (setprintrawlist
, "set print raw ", all_commands
, gdb_stdout
);
3462 show_print_raw (const char *args
, int from_tty
)
3464 cmd_show_list (showprintrawlist
, from_tty
, "");
3467 /* Controls printing of vtbl's. */
3469 show_vtblprint (struct ui_file
*file
, int from_tty
,
3470 struct cmd_list_element
*c
, const char *value
)
3472 fprintf_filtered (file
, _("\
3473 Printing of C++ virtual function tables is %s.\n"),
3477 /* Controls looking up an object's derived type using what we find in
3480 show_objectprint (struct ui_file
*file
, int from_tty
,
3481 struct cmd_list_element
*c
,
3484 fprintf_filtered (file
, _("\
3485 Printing of object's derived type based on vtable info is %s.\n"),
3490 show_static_field_print (struct ui_file
*file
, int from_tty
,
3491 struct cmd_list_element
*c
,
3494 fprintf_filtered (file
,
3495 _("Printing of C++ static members is %s.\n"),
3501 /* A couple typedefs to make writing the options a bit more
3503 using boolean_option_def
3504 = gdb::option::boolean_option_def
<value_print_options
>;
3505 using uinteger_option_def
3506 = gdb::option::uinteger_option_def
<value_print_options
>;
3507 using zuinteger_unlimited_option_def
3508 = gdb::option::zuinteger_unlimited_option_def
<value_print_options
>;
3510 /* Definitions of options for the "print" and "compile print"
3512 static const gdb::option::option_def value_print_option_defs
[] = {
3514 boolean_option_def
{
3516 [] (value_print_options
*opt
) { return &opt
->addressprint
; },
3517 show_addressprint
, /* show_cmd_cb */
3518 N_("Set printing of addresses."),
3519 N_("Show printing of addresses."),
3520 NULL
, /* help_doc */
3523 boolean_option_def
{
3525 [] (value_print_options
*opt
) { return &opt
->prettyformat_arrays
; },
3526 show_prettyformat_arrays
, /* show_cmd_cb */
3527 N_("Set pretty formatting of arrays."),
3528 N_("Show pretty formatting of arrays."),
3529 NULL
, /* help_doc */
3532 boolean_option_def
{
3534 [] (value_print_options
*opt
) { return &opt
->print_array_indexes
; },
3535 show_print_array_indexes
, /* show_cmd_cb */
3536 N_("Set printing of array indexes."),
3537 N_("Show printing of array indexes."),
3538 NULL
, /* help_doc */
3541 uinteger_option_def
{
3543 [] (value_print_options
*opt
) { return &opt
->print_max
; },
3544 show_print_max
, /* show_cmd_cb */
3545 N_("Set limit on string chars or array elements to print."),
3546 N_("Show limit on string chars or array elements to print."),
3547 N_("\"unlimited\" causes there to be no limit."),
3550 zuinteger_unlimited_option_def
{
3552 [] (value_print_options
*opt
) { return &opt
->max_depth
; },
3553 show_print_max_depth
, /* show_cmd_cb */
3554 N_("Set maximum print depth for nested structures, unions and arrays."),
3555 N_("Show maximum print depth for nested structures, unions, and arrays."),
3556 N_("When structures, unions, or arrays are nested beyond this depth then they\n\
3557 will be replaced with either '{...}' or '(...)' depending on the language.\n\
3558 Use \"unlimited\" to print the complete structure.")
3561 boolean_option_def
{
3563 [] (value_print_options
*opt
) { return &opt
->stop_print_at_null
; },
3564 show_stop_print_at_null
, /* show_cmd_cb */
3565 N_("Set printing of char arrays to stop at first null char."),
3566 N_("Show printing of char arrays to stop at first null char."),
3567 NULL
, /* help_doc */
3570 boolean_option_def
{
3572 [] (value_print_options
*opt
) { return &opt
->objectprint
; },
3573 show_objectprint
, /* show_cmd_cb */
3574 _("Set printing of C++ virtual function tables."),
3575 _("Show printing of C++ virtual function tables."),
3576 NULL
, /* help_doc */
3579 boolean_option_def
{
3581 [] (value_print_options
*opt
) { return &opt
->prettyformat_structs
; },
3582 show_prettyformat_structs
, /* show_cmd_cb */
3583 N_("Set pretty formatting of structures."),
3584 N_("Show pretty formatting of structures."),
3585 NULL
, /* help_doc */
3588 boolean_option_def
{
3590 [] (value_print_options
*opt
) { return &opt
->raw
; },
3591 NULL
, /* show_cmd_cb */
3592 N_("Set whether to print values in raw form."),
3593 N_("Show whether to print values in raw form."),
3594 N_("If set, values are printed in raw form, bypassing any\n\
3595 pretty-printers for that value.")
3598 uinteger_option_def
{
3600 [] (value_print_options
*opt
) { return &opt
->repeat_count_threshold
; },
3601 show_repeat_count_threshold
, /* show_cmd_cb */
3602 N_("Set threshold for repeated print elements."),
3603 N_("Show threshold for repeated print elements."),
3604 N_("\"unlimited\" causes all elements to be individually printed."),
3607 boolean_option_def
{
3609 [] (value_print_options
*opt
) { return &opt
->static_field_print
; },
3610 show_static_field_print
, /* show_cmd_cb */
3611 N_("Set printing of C++ static members."),
3612 N_("Show printing of C++ static members."),
3613 NULL
, /* help_doc */
3616 boolean_option_def
{
3618 [] (value_print_options
*opt
) { return &opt
->symbol_print
; },
3619 show_symbol_print
, /* show_cmd_cb */
3620 N_("Set printing of symbol names when printing pointers."),
3621 N_("Show printing of symbol names when printing pointers."),
3622 NULL
, /* help_doc */
3625 boolean_option_def
{
3627 [] (value_print_options
*opt
) { return &opt
->unionprint
; },
3628 show_unionprint
, /* show_cmd_cb */
3629 N_("Set printing of unions interior to structures."),
3630 N_("Show printing of unions interior to structures."),
3631 NULL
, /* help_doc */
3634 boolean_option_def
{
3636 [] (value_print_options
*opt
) { return &opt
->vtblprint
; },
3637 show_vtblprint
, /* show_cmd_cb */
3638 N_("Set printing of C++ virtual function tables."),
3639 N_("Show printing of C++ virtual function tables."),
3640 NULL
, /* help_doc */
3644 /* See valprint.h. */
3646 gdb::option::option_def_group
3647 make_value_print_options_def_group (value_print_options
*opts
)
3649 return {{value_print_option_defs
}, opts
};
3652 void _initialize_valprint ();
3654 _initialize_valprint ()
3656 cmd_list_element
*cmd
;
3658 add_prefix_cmd ("print", no_class
, set_print
,
3659 _("Generic command for setting how things print."),
3660 &setprintlist
, "set print ", 0, &setlist
);
3661 add_alias_cmd ("p", "print", no_class
, 1, &setlist
);
3662 /* Prefer set print to set prompt. */
3663 add_alias_cmd ("pr", "print", no_class
, 1, &setlist
);
3665 add_prefix_cmd ("print", no_class
, show_print
,
3666 _("Generic command for showing print settings."),
3667 &showprintlist
, "show print ", 0, &showlist
);
3668 add_alias_cmd ("p", "print", no_class
, 1, &showlist
);
3669 add_alias_cmd ("pr", "print", no_class
, 1, &showlist
);
3671 cmd
= add_prefix_cmd ("raw", no_class
, set_print_raw
,
3673 Generic command for setting what things to print in \"raw\" mode."),
3674 &setprintrawlist
, "set print raw ", 0,
3676 deprecate_cmd (cmd
, nullptr);
3678 cmd
= add_prefix_cmd ("raw", no_class
, show_print_raw
,
3679 _("Generic command for showing \"print raw\" settings."),
3680 &showprintrawlist
, "show print raw ", 0,
3682 deprecate_cmd (cmd
, nullptr);
3684 gdb::option::add_setshow_cmds_for_options
3685 (class_support
, &user_print_options
, value_print_option_defs
,
3686 &setprintlist
, &showprintlist
);
3688 add_setshow_zuinteger_cmd ("input-radix", class_support
, &input_radix_1
,
3690 Set default input radix for entering numbers."), _("\
3691 Show default input radix for entering numbers."), NULL
,
3694 &setlist
, &showlist
);
3696 add_setshow_zuinteger_cmd ("output-radix", class_support
, &output_radix_1
,
3698 Set default output radix for printing of values."), _("\
3699 Show default output radix for printing of values."), NULL
,
3702 &setlist
, &showlist
);
3704 /* The "set radix" and "show radix" commands are special in that
3705 they are like normal set and show commands but allow two normally
3706 independent variables to be either set or shown with a single
3707 command. So the usual deprecated_add_set_cmd() and [deleted]
3708 add_show_from_set() commands aren't really appropriate. */
3709 /* FIXME: i18n: With the new add_setshow_integer command, that is no
3710 longer true - show can display anything. */
3711 add_cmd ("radix", class_support
, set_radix
, _("\
3712 Set default input and output number radices.\n\
3713 Use 'set input-radix' or 'set output-radix' to independently set each.\n\
3714 Without an argument, sets both radices back to the default value of 10."),
3716 add_cmd ("radix", class_support
, show_radix
, _("\
3717 Show the default input and output number radices.\n\
3718 Use 'show input-radix' or 'show output-radix' to independently show each."),