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_value_print helper for TYPE_CODE_CHAR. */
889 generic_value_print_char (struct value
*value
, struct ui_file
*stream
,
890 const struct value_print_options
*options
)
892 if (options
->format
|| options
->output_format
)
894 struct value_print_options opts
= *options
;
896 opts
.format
= (options
->format
? options
->format
897 : options
->output_format
);
898 value_print_scalar_formatted (value
, &opts
, 0, stream
);
902 struct type
*unresolved_type
= value_type (value
);
903 struct type
*type
= check_typedef (unresolved_type
);
904 const gdb_byte
*valaddr
= value_contents_for_printing (value
);
906 LONGEST val
= unpack_long (type
, valaddr
);
907 if (TYPE_UNSIGNED (type
))
908 fprintf_filtered (stream
, "%u", (unsigned int) val
);
910 fprintf_filtered (stream
, "%d", (int) val
);
911 fputs_filtered (" ", stream
);
912 LA_PRINT_CHAR (val
, unresolved_type
, stream
);
916 /* generic_val_print helper for TYPE_CODE_FLT and TYPE_CODE_DECFLOAT. */
919 generic_val_print_float (struct type
*type
,
920 int embedded_offset
, struct ui_file
*stream
,
921 struct value
*original_value
,
922 const struct value_print_options
*options
)
924 struct gdbarch
*gdbarch
= get_type_arch (type
);
925 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
927 gdb_assert (!options
->format
);
929 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
931 print_floating (valaddr
+ embedded_offset
* unit_size
, type
, stream
);
934 /* generic_val_print helper for TYPE_CODE_COMPLEX. */
937 generic_val_print_complex (struct type
*type
,
938 int embedded_offset
, struct ui_file
*stream
,
939 struct value
*original_value
,
940 const struct value_print_options
*options
,
941 const struct generic_val_print_decorations
944 struct gdbarch
*gdbarch
= get_type_arch (type
);
945 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
946 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
948 fprintf_filtered (stream
, "%s", decorations
->complex_prefix
);
950 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
),
951 embedded_offset
, original_value
, options
, 0,
954 print_floating (valaddr
+ embedded_offset
* unit_size
,
955 TYPE_TARGET_TYPE (type
), stream
);
956 fprintf_filtered (stream
, "%s", decorations
->complex_infix
);
958 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
),
960 + type_length_units (TYPE_TARGET_TYPE (type
)),
961 original_value
, options
, 0, stream
);
963 print_floating (valaddr
+ embedded_offset
* unit_size
964 + TYPE_LENGTH (TYPE_TARGET_TYPE (type
)),
965 TYPE_TARGET_TYPE (type
), stream
);
966 fprintf_filtered (stream
, "%s", decorations
->complex_suffix
);
969 /* generic_value_print helper for TYPE_CODE_COMPLEX. */
972 generic_value_print_complex (struct value
*val
, struct ui_file
*stream
,
973 const struct value_print_options
*options
,
974 const struct generic_val_print_decorations
977 fprintf_filtered (stream
, "%s", decorations
->complex_prefix
);
979 struct type
*type
= check_typedef (value_type (val
));
980 struct value
*real_part
981 = value_from_component (val
, TYPE_TARGET_TYPE (type
), 0);
982 value_print_scalar_formatted (real_part
, options
, 0, stream
);
983 fprintf_filtered (stream
, "%s", decorations
->complex_infix
);
985 struct value
*imag_part
986 = value_from_component (val
, TYPE_TARGET_TYPE (type
),
987 TYPE_LENGTH (TYPE_TARGET_TYPE (type
)));
989 value_print_scalar_formatted (imag_part
, options
, 0, stream
);
990 fprintf_filtered (stream
, "%s", decorations
->complex_suffix
);
993 /* A generic val_print that is suitable for use by language
994 implementations of the la_val_print method. This function can
995 handle most type codes, though not all, notably exception
996 TYPE_CODE_UNION and TYPE_CODE_STRUCT, which must be implemented by
999 Most arguments are as to val_print.
1001 The additional DECORATIONS argument can be used to customize the
1002 output in some small, language-specific ways. */
1005 generic_val_print (struct type
*type
,
1006 int embedded_offset
, CORE_ADDR address
,
1007 struct ui_file
*stream
, int recurse
,
1008 struct value
*original_value
,
1009 const struct value_print_options
*options
,
1010 const struct generic_val_print_decorations
*decorations
)
1012 struct type
*unresolved_type
= type
;
1014 type
= check_typedef (type
);
1015 switch (TYPE_CODE (type
))
1017 case TYPE_CODE_ARRAY
:
1018 generic_val_print_array (type
, embedded_offset
, address
, stream
,
1019 recurse
, original_value
, options
, decorations
);
1022 case TYPE_CODE_MEMBERPTR
:
1023 generic_val_print_memberptr (type
, embedded_offset
, stream
,
1024 original_value
, options
);
1028 generic_val_print_ptr (type
, embedded_offset
, stream
,
1029 original_value
, options
);
1033 case TYPE_CODE_RVALUE_REF
:
1034 generic_val_print_ref (type
, embedded_offset
, stream
, recurse
,
1035 original_value
, options
);
1038 case TYPE_CODE_ENUM
:
1039 if (options
->format
)
1040 val_print_scalar_formatted (type
, embedded_offset
,
1041 original_value
, options
, 0, stream
);
1043 generic_val_print_enum (type
, embedded_offset
, stream
,
1044 original_value
, options
);
1047 case TYPE_CODE_FLAGS
:
1048 if (options
->format
)
1049 val_print_scalar_formatted (type
, embedded_offset
,
1050 original_value
, options
, 0, stream
);
1052 val_print_type_code_flags (type
, original_value
, embedded_offset
,
1056 case TYPE_CODE_FUNC
:
1057 case TYPE_CODE_METHOD
:
1058 if (options
->format
)
1059 val_print_scalar_formatted (type
, embedded_offset
,
1060 original_value
, options
, 0, stream
);
1062 generic_val_print_func (type
, embedded_offset
, address
, stream
,
1063 original_value
, options
);
1066 case TYPE_CODE_BOOL
:
1067 generic_val_print_bool (type
, embedded_offset
, stream
,
1068 original_value
, options
, decorations
);
1071 case TYPE_CODE_RANGE
:
1072 /* FIXME: create_static_range_type does not set the unsigned bit in a
1073 range type (I think it probably should copy it from the
1074 target type), so we won't print values which are too large to
1075 fit in a signed integer correctly. */
1076 /* FIXME: Doesn't handle ranges of enums correctly. (Can't just
1077 print with the target type, though, because the size of our
1078 type and the target type might differ). */
1083 generic_val_print_int (type
, embedded_offset
, stream
,
1084 original_value
, options
);
1087 case TYPE_CODE_CHAR
:
1088 generic_val_print_char (type
, unresolved_type
, embedded_offset
,
1089 stream
, original_value
, options
);
1093 case TYPE_CODE_DECFLOAT
:
1094 if (options
->format
)
1095 val_print_scalar_formatted (type
, embedded_offset
,
1096 original_value
, options
, 0, stream
);
1098 generic_val_print_float (type
, embedded_offset
, stream
,
1099 original_value
, options
);
1102 case TYPE_CODE_VOID
:
1103 fputs_filtered (decorations
->void_name
, stream
);
1106 case TYPE_CODE_ERROR
:
1107 fprintf_filtered (stream
, "%s", TYPE_ERROR_NAME (type
));
1110 case TYPE_CODE_UNDEF
:
1111 /* This happens (without TYPE_STUB set) on systems which don't use
1112 dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
1113 and no complete type for struct foo in that file. */
1114 fprintf_styled (stream
, metadata_style
.style (), _("<incomplete type>"));
1117 case TYPE_CODE_COMPLEX
:
1118 generic_val_print_complex (type
, embedded_offset
, stream
,
1119 original_value
, options
, decorations
);
1122 case TYPE_CODE_UNION
:
1123 case TYPE_CODE_STRUCT
:
1124 case TYPE_CODE_METHODPTR
:
1126 error (_("Unhandled type code %d in symbol table."),
1131 /* See valprint.h. */
1134 generic_value_print (struct value
*val
, struct ui_file
*stream
, int recurse
,
1135 const struct value_print_options
*options
,
1136 const struct generic_val_print_decorations
*decorations
)
1138 struct type
*type
= value_type (val
);
1140 type
= check_typedef (type
);
1141 switch (TYPE_CODE (type
))
1143 case TYPE_CODE_ARRAY
:
1144 generic_val_print_array (type
, 0, value_address (val
), stream
,
1145 recurse
, val
, options
, decorations
);
1148 case TYPE_CODE_MEMBERPTR
:
1149 value_print_scalar_formatted (val
, options
, 0, stream
);
1153 generic_value_print_ptr (val
, stream
, options
);
1157 case TYPE_CODE_RVALUE_REF
:
1158 generic_val_print_ref (type
, 0, stream
, recurse
,
1162 case TYPE_CODE_ENUM
:
1163 if (options
->format
)
1164 value_print_scalar_formatted (val
, options
, 0, stream
);
1166 generic_val_print_enum (type
, 0, stream
, val
, options
);
1169 case TYPE_CODE_FLAGS
:
1170 if (options
->format
)
1171 value_print_scalar_formatted (val
, options
, 0, stream
);
1173 val_print_type_code_flags (type
, val
, 0, stream
);
1176 case TYPE_CODE_FUNC
:
1177 case TYPE_CODE_METHOD
:
1178 if (options
->format
)
1179 value_print_scalar_formatted (val
, options
, 0, stream
);
1181 generic_val_print_func (type
, 0, value_address (val
), stream
,
1185 case TYPE_CODE_BOOL
:
1186 generic_value_print_bool (val
, stream
, options
, decorations
);
1189 case TYPE_CODE_RANGE
:
1190 /* FIXME: create_static_range_type does not set the unsigned bit in a
1191 range type (I think it probably should copy it from the
1192 target type), so we won't print values which are too large to
1193 fit in a signed integer correctly. */
1194 /* FIXME: Doesn't handle ranges of enums correctly. (Can't just
1195 print with the target type, though, because the size of our
1196 type and the target type might differ). */
1201 generic_value_print_int (val
, stream
, options
);
1204 case TYPE_CODE_CHAR
:
1205 generic_value_print_char (val
, stream
, options
);
1209 case TYPE_CODE_DECFLOAT
:
1210 if (options
->format
)
1211 value_print_scalar_formatted (val
, options
, 0, stream
);
1213 generic_val_print_float (type
, 0, stream
,
1217 case TYPE_CODE_VOID
:
1218 fputs_filtered (decorations
->void_name
, stream
);
1221 case TYPE_CODE_ERROR
:
1222 fprintf_filtered (stream
, "%s", TYPE_ERROR_NAME (type
));
1225 case TYPE_CODE_UNDEF
:
1226 /* This happens (without TYPE_STUB set) on systems which don't use
1227 dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
1228 and no complete type for struct foo in that file. */
1229 fprintf_styled (stream
, metadata_style
.style (), _("<incomplete type>"));
1232 case TYPE_CODE_COMPLEX
:
1233 generic_value_print_complex (val
, stream
, options
, decorations
);
1236 case TYPE_CODE_UNION
:
1237 case TYPE_CODE_STRUCT
:
1238 case TYPE_CODE_METHODPTR
:
1240 error (_("Unhandled type code %d in symbol table."),
1245 /* Helper function for val_print and common_val_print that does the
1246 work. Arguments are as to val_print, but FULL_VALUE, if given, is
1247 the value to be printed. */
1250 do_val_print (struct value
*full_value
,
1251 struct type
*type
, LONGEST embedded_offset
,
1252 CORE_ADDR address
, struct ui_file
*stream
, int recurse
,
1254 const struct value_print_options
*options
,
1255 const struct language_defn
*language
)
1258 struct value_print_options local_opts
= *options
;
1259 struct type
*real_type
= check_typedef (type
);
1261 if (local_opts
.prettyformat
== Val_prettyformat_default
)
1262 local_opts
.prettyformat
= (local_opts
.prettyformat_structs
1263 ? Val_prettyformat
: Val_no_prettyformat
);
1267 /* Ensure that the type is complete and not just a stub. If the type is
1268 only a stub and we can't find and substitute its complete type, then
1269 print appropriate string and return. */
1271 if (TYPE_STUB (real_type
))
1273 fprintf_styled (stream
, metadata_style
.style (), _("<incomplete type>"));
1277 if (!valprint_check_validity (stream
, real_type
, embedded_offset
, val
))
1282 ret
= apply_ext_lang_val_pretty_printer (type
, embedded_offset
,
1283 address
, stream
, recurse
,
1284 val
, options
, language
);
1289 /* Handle summary mode. If the value is a scalar, print it;
1290 otherwise, print an ellipsis. */
1291 if (options
->summary
&& !val_print_scalar_type_p (type
))
1293 fprintf_filtered (stream
, "...");
1297 /* If this value is too deep then don't print it. */
1298 if (!val_print_scalar_or_string_type_p (type
, language
)
1299 && val_print_check_max_depth (stream
, recurse
, options
, language
))
1304 if (full_value
!= nullptr && language
->la_value_print_inner
!= nullptr)
1305 language
->la_value_print_inner (full_value
, stream
, recurse
,
1308 language
->la_val_print (type
, embedded_offset
, address
,
1309 stream
, recurse
, val
,
1312 catch (const gdb_exception_error
&except
)
1314 fprintf_styled (stream
, metadata_style
.style (),
1315 _("<error reading variable>"));
1319 /* Print using the given LANGUAGE the data of type TYPE located at
1320 VAL's contents buffer + EMBEDDED_OFFSET (within GDB), which came
1321 from the inferior at address ADDRESS + EMBEDDED_OFFSET, onto
1322 stdio stream STREAM according to OPTIONS. VAL is the whole object
1323 that came from ADDRESS.
1325 The language printers will pass down an adjusted EMBEDDED_OFFSET to
1326 further helper subroutines as subfields of TYPE are printed. In
1327 such cases, VAL is passed down unadjusted, so
1328 that VAL can be queried for metadata about the contents data being
1329 printed, using EMBEDDED_OFFSET as an offset into VAL's contents
1330 buffer. For example: "has this field been optimized out", or "I'm
1331 printing an object while inspecting a traceframe; has this
1332 particular piece of data been collected?".
1334 RECURSE indicates the amount of indentation to supply before
1335 continuation lines; this amount is roughly twice the value of
1339 val_print (struct type
*type
, LONGEST embedded_offset
,
1340 CORE_ADDR address
, struct ui_file
*stream
, int recurse
,
1342 const struct value_print_options
*options
,
1343 const struct language_defn
*language
)
1345 do_val_print (nullptr, type
, embedded_offset
, address
, stream
,
1346 recurse
, val
, options
, language
);
1349 /* See valprint.h. */
1352 val_print_check_max_depth (struct ui_file
*stream
, int recurse
,
1353 const struct value_print_options
*options
,
1354 const struct language_defn
*language
)
1356 if (options
->max_depth
> -1 && recurse
>= options
->max_depth
)
1358 gdb_assert (language
->la_struct_too_deep_ellipsis
!= NULL
);
1359 fputs_filtered (language
->la_struct_too_deep_ellipsis
, stream
);
1366 /* Check whether the value VAL is printable. Return 1 if it is;
1367 return 0 and print an appropriate error message to STREAM according to
1368 OPTIONS if it is not. */
1371 value_check_printable (struct value
*val
, struct ui_file
*stream
,
1372 const struct value_print_options
*options
)
1376 fprintf_styled (stream
, metadata_style
.style (),
1377 _("<address of value unknown>"));
1381 if (value_entirely_optimized_out (val
))
1383 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1384 fprintf_filtered (stream
, "...");
1386 val_print_optimized_out (val
, stream
);
1390 if (value_entirely_unavailable (val
))
1392 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1393 fprintf_filtered (stream
, "...");
1395 val_print_unavailable (stream
);
1399 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_INTERNAL_FUNCTION
)
1401 fprintf_styled (stream
, metadata_style
.style (),
1402 _("<internal function %s>"),
1403 value_internal_function_name (val
));
1407 if (type_not_associated (value_type (val
)))
1409 val_print_not_associated (stream
);
1413 if (type_not_allocated (value_type (val
)))
1415 val_print_not_allocated (stream
);
1422 /* Print using the given LANGUAGE the value VAL onto stream STREAM according
1425 This is a preferable interface to val_print, above, because it uses
1426 GDB's value mechanism. */
1429 common_val_print (struct value
*val
, struct ui_file
*stream
, int recurse
,
1430 const struct value_print_options
*options
,
1431 const struct language_defn
*language
)
1433 if (!value_check_printable (val
, stream
, options
))
1436 if (language
->la_language
== language_ada
)
1437 /* The value might have a dynamic type, which would cause trouble
1438 below when trying to extract the value contents (since the value
1439 size is determined from the type size which is unknown). So
1440 get a fixed representation of our value. */
1441 val
= ada_to_fixed_value (val
);
1443 if (value_lazy (val
))
1444 value_fetch_lazy (val
);
1446 do_val_print (val
, value_type (val
),
1447 value_embedded_offset (val
), value_address (val
),
1449 val
, options
, language
);
1452 /* See valprint.h. */
1455 common_val_print_checked (struct value
*val
, struct ui_file
*stream
,
1457 const struct value_print_options
*options
,
1458 const struct language_defn
*language
)
1460 if (!value_check_printable (val
, stream
, options
))
1462 common_val_print (val
, stream
, recurse
, options
, language
);
1465 /* Print on stream STREAM the value VAL according to OPTIONS. The value
1466 is printed using the current_language syntax. */
1469 value_print (struct value
*val
, struct ui_file
*stream
,
1470 const struct value_print_options
*options
)
1472 scoped_value_mark free_values
;
1474 if (!value_check_printable (val
, stream
, options
))
1480 = apply_ext_lang_val_pretty_printer (value_type (val
),
1481 value_embedded_offset (val
),
1482 value_address (val
),
1484 val
, options
, current_language
);
1490 LA_VALUE_PRINT (val
, stream
, options
);
1494 val_print_type_code_flags (struct type
*type
, struct value
*original_value
,
1495 int embedded_offset
, struct ui_file
*stream
)
1497 const gdb_byte
*valaddr
= (value_contents_for_printing (original_value
)
1499 ULONGEST val
= unpack_long (type
, valaddr
);
1500 int field
, nfields
= TYPE_NFIELDS (type
);
1501 struct gdbarch
*gdbarch
= get_type_arch (type
);
1502 struct type
*bool_type
= builtin_type (gdbarch
)->builtin_bool
;
1504 fputs_filtered ("[", stream
);
1505 for (field
= 0; field
< nfields
; field
++)
1507 if (TYPE_FIELD_NAME (type
, field
)[0] != '\0')
1509 struct type
*field_type
= TYPE_FIELD_TYPE (type
, field
);
1511 if (field_type
== bool_type
1512 /* We require boolean types here to be one bit wide. This is a
1513 problematic place to notify the user of an internal error
1514 though. Instead just fall through and print the field as an
1516 && TYPE_FIELD_BITSIZE (type
, field
) == 1)
1518 if (val
& ((ULONGEST
)1 << TYPE_FIELD_BITPOS (type
, field
)))
1521 styled_string (variable_name_style
.style (),
1522 TYPE_FIELD_NAME (type
, field
)));
1526 unsigned field_len
= TYPE_FIELD_BITSIZE (type
, field
);
1528 = val
>> (TYPE_FIELD_BITPOS (type
, field
) - field_len
+ 1);
1530 if (field_len
< sizeof (ULONGEST
) * TARGET_CHAR_BIT
)
1531 field_val
&= ((ULONGEST
) 1 << field_len
) - 1;
1532 fprintf_filtered (stream
, " %ps=",
1533 styled_string (variable_name_style
.style (),
1534 TYPE_FIELD_NAME (type
, field
)));
1535 if (TYPE_CODE (field_type
) == TYPE_CODE_ENUM
)
1536 generic_val_print_enum_1 (field_type
, field_val
, stream
);
1538 print_longest (stream
, 'd', 0, field_val
);
1542 fputs_filtered (" ]", stream
);
1545 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
1546 according to OPTIONS and SIZE on STREAM. Format i is not supported
1549 This is how the elements of an array or structure are printed
1553 val_print_scalar_formatted (struct type
*type
,
1554 LONGEST embedded_offset
,
1556 const struct value_print_options
*options
,
1558 struct ui_file
*stream
)
1560 struct gdbarch
*arch
= get_type_arch (type
);
1561 int unit_size
= gdbarch_addressable_memory_unit_size (arch
);
1563 gdb_assert (val
!= NULL
);
1565 /* If we get here with a string format, try again without it. Go
1566 all the way back to the language printers, which may call us
1568 if (options
->format
== 's')
1570 struct value_print_options opts
= *options
;
1573 val_print (type
, embedded_offset
, 0, stream
, 0, val
, &opts
,
1578 /* value_contents_for_printing fetches all VAL's contents. They are
1579 needed to check whether VAL is optimized-out or unavailable
1581 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
1583 /* A scalar object that does not have all bits available can't be
1584 printed, because all bits contribute to its representation. */
1585 if (value_bits_any_optimized_out (val
,
1586 TARGET_CHAR_BIT
* embedded_offset
,
1587 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
1588 val_print_optimized_out (val
, stream
);
1589 else if (!value_bytes_available (val
, embedded_offset
, TYPE_LENGTH (type
)))
1590 val_print_unavailable (stream
);
1592 print_scalar_formatted (valaddr
+ embedded_offset
* unit_size
, type
,
1593 options
, size
, stream
);
1596 /* See valprint.h. */
1599 value_print_scalar_formatted (struct value
*val
,
1600 const struct value_print_options
*options
,
1602 struct ui_file
*stream
)
1604 struct type
*type
= check_typedef (value_type (val
));
1606 gdb_assert (val
!= NULL
);
1608 /* If we get here with a string format, try again without it. Go
1609 all the way back to the language printers, which may call us
1611 if (options
->format
== 's')
1613 struct value_print_options opts
= *options
;
1616 common_val_print (val
, stream
, 0, &opts
, current_language
);
1620 /* value_contents_for_printing fetches all VAL's contents. They are
1621 needed to check whether VAL is optimized-out or unavailable
1623 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
1625 /* A scalar object that does not have all bits available can't be
1626 printed, because all bits contribute to its representation. */
1627 if (value_bits_any_optimized_out (val
, 0,
1628 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
1629 val_print_optimized_out (val
, stream
);
1630 else if (!value_bytes_available (val
, 0, TYPE_LENGTH (type
)))
1631 val_print_unavailable (stream
);
1633 print_scalar_formatted (valaddr
, type
, options
, size
, stream
);
1636 /* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g.
1637 The raison d'etre of this function is to consolidate printing of
1638 LONG_LONG's into this one function. The format chars b,h,w,g are
1639 from print_scalar_formatted(). Numbers are printed using C
1642 USE_C_FORMAT means to use C format in all cases. Without it,
1643 'o' and 'x' format do not include the standard C radix prefix
1646 Hilfinger/2004-09-09: USE_C_FORMAT was originally called USE_LOCAL
1647 and was intended to request formatting according to the current
1648 language and would be used for most integers that GDB prints. The
1649 exceptional cases were things like protocols where the format of
1650 the integer is a protocol thing, not a user-visible thing). The
1651 parameter remains to preserve the information of what things might
1652 be printed with language-specific format, should we ever resurrect
1656 print_longest (struct ui_file
*stream
, int format
, int use_c_format
,
1664 val
= int_string (val_long
, 10, 1, 0, 1); break;
1666 val
= int_string (val_long
, 10, 0, 0, 1); break;
1668 val
= int_string (val_long
, 16, 0, 0, use_c_format
); break;
1670 val
= int_string (val_long
, 16, 0, 2, 1); break;
1672 val
= int_string (val_long
, 16, 0, 4, 1); break;
1674 val
= int_string (val_long
, 16, 0, 8, 1); break;
1676 val
= int_string (val_long
, 16, 0, 16, 1); break;
1679 val
= int_string (val_long
, 8, 0, 0, use_c_format
); break;
1681 internal_error (__FILE__
, __LINE__
,
1682 _("failed internal consistency check"));
1684 fputs_filtered (val
, stream
);
1687 /* This used to be a macro, but I don't think it is called often enough
1688 to merit such treatment. */
1689 /* Convert a LONGEST to an int. This is used in contexts (e.g. number of
1690 arguments to a function, number in a value history, register number, etc.)
1691 where the value must not be larger than can fit in an int. */
1694 longest_to_int (LONGEST arg
)
1696 /* Let the compiler do the work. */
1697 int rtnval
= (int) arg
;
1699 /* Check for overflows or underflows. */
1700 if (sizeof (LONGEST
) > sizeof (int))
1704 error (_("Value out of range."));
1710 /* Print a floating point value of floating-point type TYPE,
1711 pointed to in GDB by VALADDR, on STREAM. */
1714 print_floating (const gdb_byte
*valaddr
, struct type
*type
,
1715 struct ui_file
*stream
)
1717 std::string str
= target_float_to_string (valaddr
, type
);
1718 fputs_filtered (str
.c_str (), stream
);
1722 print_binary_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1723 unsigned len
, enum bfd_endian byte_order
, bool zero_pad
)
1728 bool seen_a_one
= false;
1730 /* Declared "int" so it will be signed.
1731 This ensures that right shift will shift in zeros. */
1733 const int mask
= 0x080;
1735 if (byte_order
== BFD_ENDIAN_BIG
)
1741 /* Every byte has 8 binary characters; peel off
1742 and print from the MSB end. */
1744 for (i
= 0; i
< (HOST_CHAR_BIT
* sizeof (*p
)); i
++)
1746 if (*p
& (mask
>> i
))
1751 if (zero_pad
|| seen_a_one
|| b
== '1')
1752 fputc_filtered (b
, stream
);
1760 for (p
= valaddr
+ len
- 1;
1764 for (i
= 0; i
< (HOST_CHAR_BIT
* sizeof (*p
)); i
++)
1766 if (*p
& (mask
>> i
))
1771 if (zero_pad
|| seen_a_one
|| b
== '1')
1772 fputc_filtered (b
, stream
);
1779 /* When not zero-padding, ensure that something is printed when the
1781 if (!zero_pad
&& !seen_a_one
)
1782 fputc_filtered ('0', stream
);
1785 /* A helper for print_octal_chars that emits a single octal digit,
1786 optionally suppressing it if is zero and updating SEEN_A_ONE. */
1789 emit_octal_digit (struct ui_file
*stream
, bool *seen_a_one
, int digit
)
1791 if (*seen_a_one
|| digit
!= 0)
1792 fprintf_filtered (stream
, "%o", digit
);
1797 /* VALADDR points to an integer of LEN bytes.
1798 Print it in octal on stream or format it in buf. */
1801 print_octal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1802 unsigned len
, enum bfd_endian byte_order
)
1805 unsigned char octa1
, octa2
, octa3
, carry
;
1808 /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track
1809 * the extra bits, which cycle every three bytes:
1811 * Byte side: 0 1 2 3
1813 * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 |
1815 * Octal side: 0 1 carry 3 4 carry ...
1817 * Cycle number: 0 1 2
1819 * But of course we are printing from the high side, so we have to
1820 * figure out where in the cycle we are so that we end up with no
1821 * left over bits at the end.
1823 #define BITS_IN_OCTAL 3
1824 #define HIGH_ZERO 0340
1825 #define LOW_ZERO 0034
1826 #define CARRY_ZERO 0003
1827 static_assert (HIGH_ZERO
+ LOW_ZERO
+ CARRY_ZERO
== 0xff,
1828 "cycle zero constants are wrong");
1829 #define HIGH_ONE 0200
1830 #define MID_ONE 0160
1831 #define LOW_ONE 0016
1832 #define CARRY_ONE 0001
1833 static_assert (HIGH_ONE
+ MID_ONE
+ LOW_ONE
+ CARRY_ONE
== 0xff,
1834 "cycle one constants are wrong");
1835 #define HIGH_TWO 0300
1836 #define MID_TWO 0070
1837 #define LOW_TWO 0007
1838 static_assert (HIGH_TWO
+ MID_TWO
+ LOW_TWO
== 0xff,
1839 "cycle two constants are wrong");
1841 /* For 32 we start in cycle 2, with two bits and one bit carry;
1842 for 64 in cycle in cycle 1, with one bit and a two bit carry. */
1844 cycle
= (len
* HOST_CHAR_BIT
) % BITS_IN_OCTAL
;
1847 fputs_filtered ("0", stream
);
1848 bool seen_a_one
= false;
1849 if (byte_order
== BFD_ENDIAN_BIG
)
1858 /* No carry in, carry out two bits. */
1860 octa1
= (HIGH_ZERO
& *p
) >> 5;
1861 octa2
= (LOW_ZERO
& *p
) >> 2;
1862 carry
= (CARRY_ZERO
& *p
);
1863 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1864 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1868 /* Carry in two bits, carry out one bit. */
1870 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1871 octa2
= (MID_ONE
& *p
) >> 4;
1872 octa3
= (LOW_ONE
& *p
) >> 1;
1873 carry
= (CARRY_ONE
& *p
);
1874 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1875 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1876 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1880 /* Carry in one bit, no carry out. */
1882 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1883 octa2
= (MID_TWO
& *p
) >> 3;
1884 octa3
= (LOW_TWO
& *p
);
1886 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1887 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1888 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1892 error (_("Internal error in octal conversion;"));
1896 cycle
= cycle
% BITS_IN_OCTAL
;
1901 for (p
= valaddr
+ len
- 1;
1908 /* Carry out, no carry in */
1910 octa1
= (HIGH_ZERO
& *p
) >> 5;
1911 octa2
= (LOW_ZERO
& *p
) >> 2;
1912 carry
= (CARRY_ZERO
& *p
);
1913 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1914 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1918 /* Carry in, carry out */
1920 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1921 octa2
= (MID_ONE
& *p
) >> 4;
1922 octa3
= (LOW_ONE
& *p
) >> 1;
1923 carry
= (CARRY_ONE
& *p
);
1924 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1925 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1926 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1930 /* Carry in, no carry out */
1932 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1933 octa2
= (MID_TWO
& *p
) >> 3;
1934 octa3
= (LOW_TWO
& *p
);
1936 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1937 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1938 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1942 error (_("Internal error in octal conversion;"));
1946 cycle
= cycle
% BITS_IN_OCTAL
;
1952 /* Possibly negate the integer represented by BYTES. It contains LEN
1953 bytes in the specified byte order. If the integer is negative,
1954 copy it into OUT_VEC, negate it, and return true. Otherwise, do
1955 nothing and return false. */
1958 maybe_negate_by_bytes (const gdb_byte
*bytes
, unsigned len
,
1959 enum bfd_endian byte_order
,
1960 gdb::byte_vector
*out_vec
)
1963 gdb_assert (len
> 0);
1964 if (byte_order
== BFD_ENDIAN_BIG
)
1965 sign_byte
= bytes
[0];
1967 sign_byte
= bytes
[len
- 1];
1968 if ((sign_byte
& 0x80) == 0)
1971 out_vec
->resize (len
);
1973 /* Compute -x == 1 + ~x. */
1974 if (byte_order
== BFD_ENDIAN_LITTLE
)
1977 for (unsigned i
= 0; i
< len
; ++i
)
1979 unsigned tem
= (0xff & ~bytes
[i
]) + carry
;
1980 (*out_vec
)[i
] = tem
& 0xff;
1987 for (unsigned i
= len
; i
> 0; --i
)
1989 unsigned tem
= (0xff & ~bytes
[i
- 1]) + carry
;
1990 (*out_vec
)[i
- 1] = tem
& 0xff;
1998 /* VALADDR points to an integer of LEN bytes.
1999 Print it in decimal on stream or format it in buf. */
2002 print_decimal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
2003 unsigned len
, bool is_signed
,
2004 enum bfd_endian byte_order
)
2007 #define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */
2008 #define CARRY_LEFT( x ) ((x) % TEN)
2009 #define SHIFT( x ) ((x) << 4)
2010 #define LOW_NIBBLE( x ) ( (x) & 0x00F)
2011 #define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4)
2016 int i
, j
, decimal_digits
;
2020 gdb::byte_vector negated_bytes
;
2022 && maybe_negate_by_bytes (valaddr
, len
, byte_order
, &negated_bytes
))
2024 fputs_filtered ("-", stream
);
2025 valaddr
= negated_bytes
.data ();
2028 /* Base-ten number is less than twice as many digits
2029 as the base 16 number, which is 2 digits per byte. */
2031 decimal_len
= len
* 2 * 2;
2032 std::vector
<unsigned char> digits (decimal_len
, 0);
2034 /* Ok, we have an unknown number of bytes of data to be printed in
2037 * Given a hex number (in nibbles) as XYZ, we start by taking X and
2038 * decimalizing it as "x1 x2" in two decimal nibbles. Then we multiply
2039 * the nibbles by 16, add Y and re-decimalize. Repeat with Z.
2041 * The trick is that "digits" holds a base-10 number, but sometimes
2042 * the individual digits are > 10.
2044 * Outer loop is per nibble (hex digit) of input, from MSD end to
2047 decimal_digits
= 0; /* Number of decimal digits so far */
2048 p
= (byte_order
== BFD_ENDIAN_BIG
) ? valaddr
: valaddr
+ len
- 1;
2050 while ((byte_order
== BFD_ENDIAN_BIG
) ? (p
< valaddr
+ len
) : (p
>= valaddr
))
2053 * Multiply current base-ten number by 16 in place.
2054 * Each digit was between 0 and 9, now is between
2057 for (j
= 0; j
< decimal_digits
; j
++)
2059 digits
[j
] = SHIFT (digits
[j
]);
2062 /* Take the next nibble off the input and add it to what
2063 * we've got in the LSB position. Bottom 'digit' is now
2064 * between 0 and 159.
2066 * "flip" is used to run this loop twice for each byte.
2070 /* Take top nibble. */
2072 digits
[0] += HIGH_NIBBLE (*p
);
2077 /* Take low nibble and bump our pointer "p". */
2079 digits
[0] += LOW_NIBBLE (*p
);
2080 if (byte_order
== BFD_ENDIAN_BIG
)
2087 /* Re-decimalize. We have to do this often enough
2088 * that we don't overflow, but once per nibble is
2089 * overkill. Easier this way, though. Note that the
2090 * carry is often larger than 10 (e.g. max initial
2091 * carry out of lowest nibble is 15, could bubble all
2092 * the way up greater than 10). So we have to do
2093 * the carrying beyond the last current digit.
2096 for (j
= 0; j
< decimal_len
- 1; j
++)
2100 /* "/" won't handle an unsigned char with
2101 * a value that if signed would be negative.
2102 * So extend to longword int via "dummy".
2105 carry
= CARRY_OUT (dummy
);
2106 digits
[j
] = CARRY_LEFT (dummy
);
2108 if (j
>= decimal_digits
&& carry
== 0)
2111 * All higher digits are 0 and we
2112 * no longer have a carry.
2114 * Note: "j" is 0-based, "decimal_digits" is
2117 decimal_digits
= j
+ 1;
2123 /* Ok, now "digits" is the decimal representation, with
2124 the "decimal_digits" actual digits. Print! */
2126 for (i
= decimal_digits
- 1; i
> 0 && digits
[i
] == 0; --i
)
2131 fprintf_filtered (stream
, "%1d", digits
[i
]);
2135 /* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */
2138 print_hex_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
2139 unsigned len
, enum bfd_endian byte_order
,
2144 fputs_filtered ("0x", stream
);
2145 if (byte_order
== BFD_ENDIAN_BIG
)
2151 /* Strip leading 0 bytes, but be sure to leave at least a
2152 single byte at the end. */
2153 for (; p
< valaddr
+ len
- 1 && !*p
; ++p
)
2157 const gdb_byte
*first
= p
;
2162 /* When not zero-padding, use a different format for the
2163 very first byte printed. */
2164 if (!zero_pad
&& p
== first
)
2165 fprintf_filtered (stream
, "%x", *p
);
2167 fprintf_filtered (stream
, "%02x", *p
);
2172 p
= valaddr
+ len
- 1;
2176 /* Strip leading 0 bytes, but be sure to leave at least a
2177 single byte at the end. */
2178 for (; p
>= valaddr
+ 1 && !*p
; --p
)
2182 const gdb_byte
*first
= p
;
2187 /* When not zero-padding, use a different format for the
2188 very first byte printed. */
2189 if (!zero_pad
&& p
== first
)
2190 fprintf_filtered (stream
, "%x", *p
);
2192 fprintf_filtered (stream
, "%02x", *p
);
2197 /* VALADDR points to a char integer of LEN bytes.
2198 Print it out in appropriate language form on stream.
2199 Omit any leading zero chars. */
2202 print_char_chars (struct ui_file
*stream
, struct type
*type
,
2203 const gdb_byte
*valaddr
,
2204 unsigned len
, enum bfd_endian byte_order
)
2208 if (byte_order
== BFD_ENDIAN_BIG
)
2211 while (p
< valaddr
+ len
- 1 && *p
== 0)
2214 while (p
< valaddr
+ len
)
2216 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
2222 p
= valaddr
+ len
- 1;
2223 while (p
> valaddr
&& *p
== 0)
2226 while (p
>= valaddr
)
2228 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
2234 /* Print function pointer with inferior address ADDRESS onto stdio
2238 print_function_pointer_address (const struct value_print_options
*options
,
2239 struct gdbarch
*gdbarch
,
2241 struct ui_file
*stream
)
2244 = gdbarch_convert_from_func_ptr_addr (gdbarch
, address
,
2245 current_top_target ());
2247 /* If the function pointer is represented by a description, print
2248 the address of the description. */
2249 if (options
->addressprint
&& func_addr
!= address
)
2251 fputs_filtered ("@", stream
);
2252 fputs_filtered (paddress (gdbarch
, address
), stream
);
2253 fputs_filtered (": ", stream
);
2255 print_address_demangle (options
, gdbarch
, func_addr
, stream
, demangle
);
2259 /* Print on STREAM using the given OPTIONS the index for the element
2260 at INDEX of an array whose index type is INDEX_TYPE. */
2263 maybe_print_array_index (struct type
*index_type
, LONGEST index
,
2264 struct ui_file
*stream
,
2265 const struct value_print_options
*options
)
2267 struct value
*index_value
;
2269 if (!options
->print_array_indexes
)
2272 index_value
= value_from_longest (index_type
, index
);
2274 LA_PRINT_ARRAY_INDEX (index_value
, stream
, options
);
2277 /* Called by various <lang>_val_print routines to print elements of an
2278 array in the form "<elem1>, <elem2>, <elem3>, ...".
2280 (FIXME?) Assumes array element separator is a comma, which is correct
2281 for all languages currently handled.
2282 (FIXME?) Some languages have a notation for repeated array elements,
2283 perhaps we should try to use that notation when appropriate. */
2286 val_print_array_elements (struct type
*type
,
2287 LONGEST embedded_offset
,
2288 CORE_ADDR address
, struct ui_file
*stream
,
2291 const struct value_print_options
*options
,
2294 unsigned int things_printed
= 0;
2296 struct type
*elttype
, *index_type
, *base_index_type
;
2298 /* Position of the array element we are examining to see
2299 whether it is repeated. */
2301 /* Number of repetitions we have detected so far. */
2303 LONGEST low_bound
, high_bound
;
2304 LONGEST low_pos
, high_pos
;
2306 elttype
= TYPE_TARGET_TYPE (type
);
2307 eltlen
= type_length_units (check_typedef (elttype
));
2308 index_type
= TYPE_INDEX_TYPE (type
);
2310 if (get_array_bounds (type
, &low_bound
, &high_bound
))
2312 if (TYPE_CODE (index_type
) == TYPE_CODE_RANGE
)
2313 base_index_type
= TYPE_TARGET_TYPE (index_type
);
2315 base_index_type
= index_type
;
2317 /* Non-contiguous enumerations types can by used as index types
2318 in some languages (e.g. Ada). In this case, the array length
2319 shall be computed from the positions of the first and last
2320 literal in the enumeration type, and not from the values
2321 of these literals. */
2322 if (!discrete_position (base_index_type
, low_bound
, &low_pos
)
2323 || !discrete_position (base_index_type
, high_bound
, &high_pos
))
2325 warning (_("unable to get positions in array, use bounds instead"));
2326 low_pos
= low_bound
;
2327 high_pos
= high_bound
;
2330 /* The array length should normally be HIGH_POS - LOW_POS + 1.
2331 But we have to be a little extra careful, because some languages
2332 such as Ada allow LOW_POS to be greater than HIGH_POS for
2333 empty arrays. In that situation, the array length is just zero,
2335 if (low_pos
> high_pos
)
2338 len
= high_pos
- low_pos
+ 1;
2342 warning (_("unable to get bounds of array, assuming null array"));
2347 annotate_array_section_begin (i
, elttype
);
2349 for (; i
< len
&& things_printed
< options
->print_max
; i
++)
2353 if (options
->prettyformat_arrays
)
2355 fprintf_filtered (stream
, ",\n");
2356 print_spaces_filtered (2 + 2 * recurse
, stream
);
2360 fprintf_filtered (stream
, ", ");
2363 wrap_here (n_spaces (2 + 2 * recurse
));
2364 maybe_print_array_index (index_type
, i
+ low_bound
,
2369 /* Only check for reps if repeat_count_threshold is not set to
2370 UINT_MAX (unlimited). */
2371 if (options
->repeat_count_threshold
< UINT_MAX
)
2374 && value_contents_eq (val
,
2375 embedded_offset
+ i
* eltlen
,
2386 if (reps
> options
->repeat_count_threshold
)
2388 val_print (elttype
, embedded_offset
+ i
* eltlen
,
2389 address
, stream
, recurse
+ 1, val
, options
,
2391 annotate_elt_rep (reps
);
2392 fprintf_filtered (stream
, " %p[<repeats %u times>%p]",
2393 metadata_style
.style ().ptr (), reps
, nullptr);
2394 annotate_elt_rep_end ();
2397 things_printed
+= options
->repeat_count_threshold
;
2401 val_print (elttype
, embedded_offset
+ i
* eltlen
,
2403 stream
, recurse
+ 1, val
, options
, current_language
);
2408 annotate_array_section_end ();
2411 fprintf_filtered (stream
, "...");
2415 /* See valprint.h. */
2418 value_print_array_elements (struct value
*val
, struct ui_file
*stream
,
2420 const struct value_print_options
*options
,
2423 unsigned int things_printed
= 0;
2425 struct type
*elttype
, *index_type
, *base_index_type
;
2427 /* Position of the array element we are examining to see
2428 whether it is repeated. */
2430 /* Number of repetitions we have detected so far. */
2432 LONGEST low_bound
, high_bound
;
2433 LONGEST low_pos
, high_pos
;
2435 struct type
*type
= check_typedef (value_type (val
));
2437 elttype
= TYPE_TARGET_TYPE (type
);
2438 eltlen
= type_length_units (check_typedef (elttype
));
2439 index_type
= TYPE_INDEX_TYPE (type
);
2441 if (get_array_bounds (type
, &low_bound
, &high_bound
))
2443 if (TYPE_CODE (index_type
) == TYPE_CODE_RANGE
)
2444 base_index_type
= TYPE_TARGET_TYPE (index_type
);
2446 base_index_type
= index_type
;
2448 /* Non-contiguous enumerations types can by used as index types
2449 in some languages (e.g. Ada). In this case, the array length
2450 shall be computed from the positions of the first and last
2451 literal in the enumeration type, and not from the values
2452 of these literals. */
2453 if (!discrete_position (base_index_type
, low_bound
, &low_pos
)
2454 || !discrete_position (base_index_type
, high_bound
, &high_pos
))
2456 warning (_("unable to get positions in array, use bounds instead"));
2457 low_pos
= low_bound
;
2458 high_pos
= high_bound
;
2461 /* The array length should normally be HIGH_POS - LOW_POS + 1.
2462 But we have to be a little extra careful, because some languages
2463 such as Ada allow LOW_POS to be greater than HIGH_POS for
2464 empty arrays. In that situation, the array length is just zero,
2466 if (low_pos
> high_pos
)
2469 len
= high_pos
- low_pos
+ 1;
2473 warning (_("unable to get bounds of array, assuming null array"));
2478 annotate_array_section_begin (i
, elttype
);
2480 for (; i
< len
&& things_printed
< options
->print_max
; i
++)
2482 scoped_value_mark free_values
;
2486 if (options
->prettyformat_arrays
)
2488 fprintf_filtered (stream
, ",\n");
2489 print_spaces_filtered (2 + 2 * recurse
, stream
);
2492 fprintf_filtered (stream
, ", ");
2494 wrap_here (n_spaces (2 + 2 * recurse
));
2495 maybe_print_array_index (index_type
, i
+ low_bound
,
2500 /* Only check for reps if repeat_count_threshold is not set to
2501 UINT_MAX (unlimited). */
2502 if (options
->repeat_count_threshold
< UINT_MAX
)
2505 && value_contents_eq (val
, i
* eltlen
,
2514 struct value
*element
= value_from_component (val
, elttype
, eltlen
* i
);
2515 common_val_print (element
, stream
, recurse
+ 1, options
,
2518 if (reps
> options
->repeat_count_threshold
)
2520 annotate_elt_rep (reps
);
2521 fprintf_filtered (stream
, " %p[<repeats %u times>%p]",
2522 metadata_style
.style ().ptr (), reps
, nullptr);
2523 annotate_elt_rep_end ();
2526 things_printed
+= options
->repeat_count_threshold
;
2534 annotate_array_section_end ();
2536 fprintf_filtered (stream
, "...");
2539 /* Read LEN bytes of target memory at address MEMADDR, placing the
2540 results in GDB's memory at MYADDR. Returns a count of the bytes
2541 actually read, and optionally a target_xfer_status value in the
2542 location pointed to by ERRPTR if ERRPTR is non-null. */
2544 /* FIXME: cagney/1999-10-14: Only used by val_print_string. Can this
2545 function be eliminated. */
2548 partial_memory_read (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
2549 int len
, int *errptr
)
2551 int nread
; /* Number of bytes actually read. */
2552 int errcode
; /* Error from last read. */
2554 /* First try a complete read. */
2555 errcode
= target_read_memory (memaddr
, myaddr
, len
);
2563 /* Loop, reading one byte at a time until we get as much as we can. */
2564 for (errcode
= 0, nread
= 0; len
> 0 && errcode
== 0; nread
++, len
--)
2566 errcode
= target_read_memory (memaddr
++, myaddr
++, 1);
2568 /* If an error, the last read was unsuccessful, so adjust count. */
2581 /* Read a string from the inferior, at ADDR, with LEN characters of
2582 WIDTH bytes each. Fetch at most FETCHLIMIT characters. BUFFER
2583 will be set to a newly allocated buffer containing the string, and
2584 BYTES_READ will be set to the number of bytes read. Returns 0 on
2585 success, or a target_xfer_status on failure.
2587 If LEN > 0, reads the lesser of LEN or FETCHLIMIT characters
2588 (including eventual NULs in the middle or end of the string).
2590 If LEN is -1, stops at the first null character (not necessarily
2591 the first null byte) up to a maximum of FETCHLIMIT characters. Set
2592 FETCHLIMIT to UINT_MAX to read as many characters as possible from
2595 Unless an exception is thrown, BUFFER will always be allocated, even on
2596 failure. In this case, some characters might have been read before the
2597 failure happened. Check BYTES_READ to recognize this situation.
2599 Note: There was a FIXME asking to make this code use target_read_string,
2600 but this function is more general (can read past null characters, up to
2601 given LEN). Besides, it is used much more often than target_read_string
2602 so it is more tested. Perhaps callers of target_read_string should use
2603 this function instead? */
2606 read_string (CORE_ADDR addr
, int len
, int width
, unsigned int fetchlimit
,
2607 enum bfd_endian byte_order
, gdb::unique_xmalloc_ptr
<gdb_byte
> *buffer
,
2610 int errcode
; /* Errno returned from bad reads. */
2611 unsigned int nfetch
; /* Chars to fetch / chars fetched. */
2612 gdb_byte
*bufptr
; /* Pointer to next available byte in
2615 /* Loop until we either have all the characters, or we encounter
2616 some error, such as bumping into the end of the address space. */
2618 buffer
->reset (nullptr);
2622 /* We want fetchlimit chars, so we might as well read them all in
2624 unsigned int fetchlen
= std::min ((unsigned) len
, fetchlimit
);
2626 buffer
->reset ((gdb_byte
*) xmalloc (fetchlen
* width
));
2627 bufptr
= buffer
->get ();
2629 nfetch
= partial_memory_read (addr
, bufptr
, fetchlen
* width
, &errcode
)
2631 addr
+= nfetch
* width
;
2632 bufptr
+= nfetch
* width
;
2636 unsigned long bufsize
= 0;
2637 unsigned int chunksize
; /* Size of each fetch, in chars. */
2638 int found_nul
; /* Non-zero if we found the nul char. */
2639 gdb_byte
*limit
; /* First location past end of fetch buffer. */
2642 /* We are looking for a NUL terminator to end the fetching, so we
2643 might as well read in blocks that are large enough to be efficient,
2644 but not so large as to be slow if fetchlimit happens to be large.
2645 So we choose the minimum of 8 and fetchlimit. We used to use 200
2646 instead of 8 but 200 is way too big for remote debugging over a
2648 chunksize
= std::min (8u, fetchlimit
);
2653 nfetch
= std::min ((unsigned long) chunksize
, fetchlimit
- bufsize
);
2655 if (*buffer
== NULL
)
2656 buffer
->reset ((gdb_byte
*) xmalloc (nfetch
* width
));
2658 buffer
->reset ((gdb_byte
*) xrealloc (buffer
->release (),
2659 (nfetch
+ bufsize
) * width
));
2661 bufptr
= buffer
->get () + bufsize
* width
;
2664 /* Read as much as we can. */
2665 nfetch
= partial_memory_read (addr
, bufptr
, nfetch
* width
, &errcode
)
2668 /* Scan this chunk for the null character that terminates the string
2669 to print. If found, we don't need to fetch any more. Note
2670 that bufptr is explicitly left pointing at the next character
2671 after the null character, or at the next character after the end
2674 limit
= bufptr
+ nfetch
* width
;
2675 while (bufptr
< limit
)
2679 c
= extract_unsigned_integer (bufptr
, width
, byte_order
);
2684 /* We don't care about any error which happened after
2685 the NUL terminator. */
2692 while (errcode
== 0 /* no error */
2693 && bufptr
- buffer
->get () < fetchlimit
* width
/* no overrun */
2694 && !found_nul
); /* haven't found NUL yet */
2697 { /* Length of string is really 0! */
2698 /* We always allocate *buffer. */
2699 buffer
->reset ((gdb_byte
*) xmalloc (1));
2700 bufptr
= buffer
->get ();
2704 /* bufptr and addr now point immediately beyond the last byte which we
2705 consider part of the string (including a '\0' which ends the string). */
2706 *bytes_read
= bufptr
- buffer
->get ();
2713 /* Return true if print_wchar can display W without resorting to a
2714 numeric escape, false otherwise. */
2717 wchar_printable (gdb_wchar_t w
)
2719 return (gdb_iswprint (w
)
2720 || w
== LCST ('\a') || w
== LCST ('\b')
2721 || w
== LCST ('\f') || w
== LCST ('\n')
2722 || w
== LCST ('\r') || w
== LCST ('\t')
2723 || w
== LCST ('\v'));
2726 /* A helper function that converts the contents of STRING to wide
2727 characters and then appends them to OUTPUT. */
2730 append_string_as_wide (const char *string
,
2731 struct obstack
*output
)
2733 for (; *string
; ++string
)
2735 gdb_wchar_t w
= gdb_btowc (*string
);
2736 obstack_grow (output
, &w
, sizeof (gdb_wchar_t
));
2740 /* Print a wide character W to OUTPUT. ORIG is a pointer to the
2741 original (target) bytes representing the character, ORIG_LEN is the
2742 number of valid bytes. WIDTH is the number of bytes in a base
2743 characters of the type. OUTPUT is an obstack to which wide
2744 characters are emitted. QUOTER is a (narrow) character indicating
2745 the style of quotes surrounding the character to be printed.
2746 NEED_ESCAPE is an in/out flag which is used to track numeric
2747 escapes across calls. */
2750 print_wchar (gdb_wint_t w
, const gdb_byte
*orig
,
2751 int orig_len
, int width
,
2752 enum bfd_endian byte_order
,
2753 struct obstack
*output
,
2754 int quoter
, int *need_escapep
)
2756 int need_escape
= *need_escapep
;
2760 /* iswprint implementation on Windows returns 1 for tab character.
2761 In order to avoid different printout on this host, we explicitly
2762 use wchar_printable function. */
2766 obstack_grow_wstr (output
, LCST ("\\a"));
2769 obstack_grow_wstr (output
, LCST ("\\b"));
2772 obstack_grow_wstr (output
, LCST ("\\f"));
2775 obstack_grow_wstr (output
, LCST ("\\n"));
2778 obstack_grow_wstr (output
, LCST ("\\r"));
2781 obstack_grow_wstr (output
, LCST ("\\t"));
2784 obstack_grow_wstr (output
, LCST ("\\v"));
2788 if (wchar_printable (w
) && (!need_escape
|| (!gdb_iswdigit (w
)
2790 && w
!= LCST ('9'))))
2792 gdb_wchar_t wchar
= w
;
2794 if (w
== gdb_btowc (quoter
) || w
== LCST ('\\'))
2795 obstack_grow_wstr (output
, LCST ("\\"));
2796 obstack_grow (output
, &wchar
, sizeof (gdb_wchar_t
));
2802 for (i
= 0; i
+ width
<= orig_len
; i
+= width
)
2807 value
= extract_unsigned_integer (&orig
[i
], width
,
2809 /* If the value fits in 3 octal digits, print it that
2810 way. Otherwise, print it as a hex escape. */
2812 xsnprintf (octal
, sizeof (octal
), "\\%.3o",
2813 (int) (value
& 0777));
2815 xsnprintf (octal
, sizeof (octal
), "\\x%lx", (long) value
);
2816 append_string_as_wide (octal
, output
);
2818 /* If we somehow have extra bytes, print them now. */
2819 while (i
< orig_len
)
2823 xsnprintf (octal
, sizeof (octal
), "\\%.3o", orig
[i
] & 0xff);
2824 append_string_as_wide (octal
, output
);
2835 /* Print the character C on STREAM as part of the contents of a
2836 literal string whose delimiter is QUOTER. ENCODING names the
2840 generic_emit_char (int c
, struct type
*type
, struct ui_file
*stream
,
2841 int quoter
, const char *encoding
)
2843 enum bfd_endian byte_order
2844 = type_byte_order (type
);
2846 int need_escape
= 0;
2848 c_buf
= (gdb_byte
*) alloca (TYPE_LENGTH (type
));
2849 pack_long (c_buf
, type
, c
);
2851 wchar_iterator
iter (c_buf
, TYPE_LENGTH (type
), encoding
, TYPE_LENGTH (type
));
2853 /* This holds the printable form of the wchar_t data. */
2854 auto_obstack wchar_buf
;
2860 const gdb_byte
*buf
;
2862 int print_escape
= 1;
2863 enum wchar_iterate_result result
;
2865 num_chars
= iter
.iterate (&result
, &chars
, &buf
, &buflen
);
2870 /* If all characters are printable, print them. Otherwise,
2871 we're going to have to print an escape sequence. We
2872 check all characters because we want to print the target
2873 bytes in the escape sequence, and we don't know character
2874 boundaries there. */
2878 for (i
= 0; i
< num_chars
; ++i
)
2879 if (!wchar_printable (chars
[i
]))
2887 for (i
= 0; i
< num_chars
; ++i
)
2888 print_wchar (chars
[i
], buf
, buflen
,
2889 TYPE_LENGTH (type
), byte_order
,
2890 &wchar_buf
, quoter
, &need_escape
);
2894 /* This handles the NUM_CHARS == 0 case as well. */
2896 print_wchar (gdb_WEOF
, buf
, buflen
, TYPE_LENGTH (type
),
2897 byte_order
, &wchar_buf
, quoter
, &need_escape
);
2900 /* The output in the host encoding. */
2901 auto_obstack output
;
2903 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2904 (gdb_byte
*) obstack_base (&wchar_buf
),
2905 obstack_object_size (&wchar_buf
),
2906 sizeof (gdb_wchar_t
), &output
, translit_char
);
2907 obstack_1grow (&output
, '\0');
2909 fputs_filtered ((const char *) obstack_base (&output
), stream
);
2912 /* Return the repeat count of the next character/byte in ITER,
2913 storing the result in VEC. */
2916 count_next_character (wchar_iterator
*iter
,
2917 std::vector
<converted_character
> *vec
)
2919 struct converted_character
*current
;
2923 struct converted_character tmp
;
2927 = iter
->iterate (&tmp
.result
, &chars
, &tmp
.buf
, &tmp
.buflen
);
2928 if (tmp
.num_chars
> 0)
2930 gdb_assert (tmp
.num_chars
< MAX_WCHARS
);
2931 memcpy (tmp
.chars
, chars
, tmp
.num_chars
* sizeof (gdb_wchar_t
));
2933 vec
->push_back (tmp
);
2936 current
= &vec
->back ();
2938 /* Count repeated characters or bytes. */
2939 current
->repeat_count
= 1;
2940 if (current
->num_chars
== -1)
2948 struct converted_character d
;
2955 /* Get the next character. */
2956 d
.num_chars
= iter
->iterate (&d
.result
, &chars
, &d
.buf
, &d
.buflen
);
2958 /* If a character was successfully converted, save the character
2959 into the converted character. */
2960 if (d
.num_chars
> 0)
2962 gdb_assert (d
.num_chars
< MAX_WCHARS
);
2963 memcpy (d
.chars
, chars
, WCHAR_BUFLEN (d
.num_chars
));
2966 /* Determine if the current character is the same as this
2968 if (d
.num_chars
== current
->num_chars
&& d
.result
== current
->result
)
2970 /* There are two cases to consider:
2972 1) Equality of converted character (num_chars > 0)
2973 2) Equality of non-converted character (num_chars == 0) */
2974 if ((current
->num_chars
> 0
2975 && memcmp (current
->chars
, d
.chars
,
2976 WCHAR_BUFLEN (current
->num_chars
)) == 0)
2977 || (current
->num_chars
== 0
2978 && current
->buflen
== d
.buflen
2979 && memcmp (current
->buf
, d
.buf
, current
->buflen
) == 0))
2980 ++current
->repeat_count
;
2988 /* Push this next converted character onto the result vector. */
2989 repeat
= current
->repeat_count
;
2995 /* Print the characters in CHARS to the OBSTACK. QUOTE_CHAR is the quote
2996 character to use with string output. WIDTH is the size of the output
2997 character type. BYTE_ORDER is the target byte order. OPTIONS
2998 is the user's print options. */
3001 print_converted_chars_to_obstack (struct obstack
*obstack
,
3002 const std::vector
<converted_character
> &chars
,
3003 int quote_char
, int width
,
3004 enum bfd_endian byte_order
,
3005 const struct value_print_options
*options
)
3008 const converted_character
*elem
;
3009 enum {START
, SINGLE
, REPEAT
, INCOMPLETE
, FINISH
} state
, last
;
3010 gdb_wchar_t wide_quote_char
= gdb_btowc (quote_char
);
3011 int need_escape
= 0;
3013 /* Set the start state. */
3015 last
= state
= START
;
3023 /* Nothing to do. */
3030 /* We are outputting a single character
3031 (< options->repeat_count_threshold). */
3035 /* We were outputting some other type of content, so we
3036 must output and a comma and a quote. */
3038 obstack_grow_wstr (obstack
, LCST (", "));
3039 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
3041 /* Output the character. */
3042 for (j
= 0; j
< elem
->repeat_count
; ++j
)
3044 if (elem
->result
== wchar_iterate_ok
)
3045 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
3046 byte_order
, obstack
, quote_char
, &need_escape
);
3048 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
3049 byte_order
, obstack
, quote_char
, &need_escape
);
3058 /* We are outputting a character with a repeat count
3059 greater than options->repeat_count_threshold. */
3063 /* We were outputting a single string. Terminate the
3065 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
3068 obstack_grow_wstr (obstack
, LCST (", "));
3070 /* Output the character and repeat string. */
3071 obstack_grow_wstr (obstack
, LCST ("'"));
3072 if (elem
->result
== wchar_iterate_ok
)
3073 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
3074 byte_order
, obstack
, quote_char
, &need_escape
);
3076 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
3077 byte_order
, obstack
, quote_char
, &need_escape
);
3078 obstack_grow_wstr (obstack
, LCST ("'"));
3079 std::string s
= string_printf (_(" <repeats %u times>"),
3080 elem
->repeat_count
);
3081 for (j
= 0; s
[j
]; ++j
)
3083 gdb_wchar_t w
= gdb_btowc (s
[j
]);
3084 obstack_grow (obstack
, &w
, sizeof (gdb_wchar_t
));
3090 /* We are outputting an incomplete sequence. */
3093 /* If we were outputting a string of SINGLE characters,
3094 terminate the quote. */
3095 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
3098 obstack_grow_wstr (obstack
, LCST (", "));
3100 /* Output the incomplete sequence string. */
3101 obstack_grow_wstr (obstack
, LCST ("<incomplete sequence "));
3102 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
, byte_order
,
3103 obstack
, 0, &need_escape
);
3104 obstack_grow_wstr (obstack
, LCST (">"));
3106 /* We do not attempt to output anything after this. */
3111 /* All done. If we were outputting a string of SINGLE
3112 characters, the string must be terminated. Otherwise,
3113 REPEAT and INCOMPLETE are always left properly terminated. */
3115 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
3120 /* Get the next element and state. */
3122 if (state
!= FINISH
)
3124 elem
= &chars
[idx
++];
3125 switch (elem
->result
)
3127 case wchar_iterate_ok
:
3128 case wchar_iterate_invalid
:
3129 if (elem
->repeat_count
> options
->repeat_count_threshold
)
3135 case wchar_iterate_incomplete
:
3139 case wchar_iterate_eof
:
3147 /* Print the character string STRING, printing at most LENGTH
3148 characters. LENGTH is -1 if the string is nul terminated. TYPE is
3149 the type of each character. OPTIONS holds the printing options;
3150 printing stops early if the number hits print_max; repeat counts
3151 are printed as appropriate. Print ellipses at the end if we had to
3152 stop before printing LENGTH characters, or if FORCE_ELLIPSES.
3153 QUOTE_CHAR is the character to print at each end of the string. If
3154 C_STYLE_TERMINATOR is true, and the last character is 0, then it is
3158 generic_printstr (struct ui_file
*stream
, struct type
*type
,
3159 const gdb_byte
*string
, unsigned int length
,
3160 const char *encoding
, int force_ellipses
,
3161 int quote_char
, int c_style_terminator
,
3162 const struct value_print_options
*options
)
3164 enum bfd_endian byte_order
= type_byte_order (type
);
3166 int width
= TYPE_LENGTH (type
);
3168 struct converted_character
*last
;
3172 unsigned long current_char
= 1;
3174 for (i
= 0; current_char
; ++i
)
3177 current_char
= extract_unsigned_integer (string
+ i
* width
,
3183 /* If the string was not truncated due to `set print elements', and
3184 the last byte of it is a null, we don't print that, in
3185 traditional C style. */
3186 if (c_style_terminator
3189 && (extract_unsigned_integer (string
+ (length
- 1) * width
,
3190 width
, byte_order
) == 0))
3195 fputs_filtered ("\"\"", stream
);
3199 /* Arrange to iterate over the characters, in wchar_t form. */
3200 wchar_iterator
iter (string
, length
* width
, encoding
, width
);
3201 std::vector
<converted_character
> converted_chars
;
3203 /* Convert characters until the string is over or the maximum
3204 number of printed characters has been reached. */
3206 while (i
< options
->print_max
)
3212 /* Grab the next character and repeat count. */
3213 r
= count_next_character (&iter
, &converted_chars
);
3215 /* If less than zero, the end of the input string was reached. */
3219 /* Otherwise, add the count to the total print count and get
3220 the next character. */
3224 /* Get the last element and determine if the entire string was
3226 last
= &converted_chars
.back ();
3227 finished
= (last
->result
== wchar_iterate_eof
);
3229 /* Ensure that CONVERTED_CHARS is terminated. */
3230 last
->result
= wchar_iterate_eof
;
3232 /* WCHAR_BUF is the obstack we use to represent the string in
3234 auto_obstack wchar_buf
;
3236 /* Print the output string to the obstack. */
3237 print_converted_chars_to_obstack (&wchar_buf
, converted_chars
, quote_char
,
3238 width
, byte_order
, options
);
3240 if (force_ellipses
|| !finished
)
3241 obstack_grow_wstr (&wchar_buf
, LCST ("..."));
3243 /* OUTPUT is where we collect `char's for printing. */
3244 auto_obstack output
;
3246 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
3247 (gdb_byte
*) obstack_base (&wchar_buf
),
3248 obstack_object_size (&wchar_buf
),
3249 sizeof (gdb_wchar_t
), &output
, translit_char
);
3250 obstack_1grow (&output
, '\0');
3252 fputs_filtered ((const char *) obstack_base (&output
), stream
);
3255 /* Print a string from the inferior, starting at ADDR and printing up to LEN
3256 characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing
3257 stops at the first null byte, otherwise printing proceeds (including null
3258 bytes) until either print_max or LEN characters have been printed,
3259 whichever is smaller. ENCODING is the name of the string's
3260 encoding. It can be NULL, in which case the target encoding is
3264 val_print_string (struct type
*elttype
, const char *encoding
,
3265 CORE_ADDR addr
, int len
,
3266 struct ui_file
*stream
,
3267 const struct value_print_options
*options
)
3269 int force_ellipsis
= 0; /* Force ellipsis to be printed if nonzero. */
3270 int err
; /* Non-zero if we got a bad read. */
3271 int found_nul
; /* Non-zero if we found the nul char. */
3272 unsigned int fetchlimit
; /* Maximum number of chars to print. */
3274 gdb::unique_xmalloc_ptr
<gdb_byte
> buffer
; /* Dynamically growable fetch buffer. */
3275 struct gdbarch
*gdbarch
= get_type_arch (elttype
);
3276 enum bfd_endian byte_order
= type_byte_order (elttype
);
3277 int width
= TYPE_LENGTH (elttype
);
3279 /* First we need to figure out the limit on the number of characters we are
3280 going to attempt to fetch and print. This is actually pretty simple. If
3281 LEN >= zero, then the limit is the minimum of LEN and print_max. If
3282 LEN is -1, then the limit is print_max. This is true regardless of
3283 whether print_max is zero, UINT_MAX (unlimited), or something in between,
3284 because finding the null byte (or available memory) is what actually
3285 limits the fetch. */
3287 fetchlimit
= (len
== -1 ? options
->print_max
: std::min ((unsigned) len
,
3288 options
->print_max
));
3290 err
= read_string (addr
, len
, width
, fetchlimit
, byte_order
,
3291 &buffer
, &bytes_read
);
3295 /* We now have either successfully filled the buffer to fetchlimit,
3296 or terminated early due to an error or finding a null char when
3299 /* Determine found_nul by looking at the last character read. */
3301 if (bytes_read
>= width
)
3302 found_nul
= extract_unsigned_integer (buffer
.get () + bytes_read
- width
,
3303 width
, byte_order
) == 0;
3304 if (len
== -1 && !found_nul
)
3308 /* We didn't find a NUL terminator we were looking for. Attempt
3309 to peek at the next character. If not successful, or it is not
3310 a null byte, then force ellipsis to be printed. */
3312 peekbuf
= (gdb_byte
*) alloca (width
);
3314 if (target_read_memory (addr
, peekbuf
, width
) == 0
3315 && extract_unsigned_integer (peekbuf
, width
, byte_order
) != 0)
3318 else if ((len
>= 0 && err
!= 0) || (len
> bytes_read
/ width
))
3320 /* Getting an error when we have a requested length, or fetching less
3321 than the number of characters actually requested, always make us
3326 /* If we get an error before fetching anything, don't print a string.
3327 But if we fetch something and then get an error, print the string
3328 and then the error message. */
3329 if (err
== 0 || bytes_read
> 0)
3331 LA_PRINT_STRING (stream
, elttype
, buffer
.get (), bytes_read
/ width
,
3332 encoding
, force_ellipsis
, options
);
3337 std::string str
= memory_error_message (TARGET_XFER_E_IO
, gdbarch
, addr
);
3339 fprintf_filtered (stream
, _("<error: %ps>"),
3340 styled_string (metadata_style
.style (),
3344 return (bytes_read
/ width
);
3347 /* Handle 'show print max-depth'. */
3350 show_print_max_depth (struct ui_file
*file
, int from_tty
,
3351 struct cmd_list_element
*c
, const char *value
)
3353 fprintf_filtered (file
, _("Maximum print depth is %s.\n"), value
);
3357 /* The 'set input-radix' command writes to this auxiliary variable.
3358 If the requested radix is valid, INPUT_RADIX is updated; otherwise,
3359 it is left unchanged. */
3361 static unsigned input_radix_1
= 10;
3363 /* Validate an input or output radix setting, and make sure the user
3364 knows what they really did here. Radix setting is confusing, e.g.
3365 setting the input radix to "10" never changes it! */
3368 set_input_radix (const char *args
, int from_tty
, struct cmd_list_element
*c
)
3370 set_input_radix_1 (from_tty
, input_radix_1
);
3374 set_input_radix_1 (int from_tty
, unsigned radix
)
3376 /* We don't currently disallow any input radix except 0 or 1, which don't
3377 make any mathematical sense. In theory, we can deal with any input
3378 radix greater than 1, even if we don't have unique digits for every
3379 value from 0 to radix-1, but in practice we lose on large radix values.
3380 We should either fix the lossage or restrict the radix range more.
3385 input_radix_1
= input_radix
;
3386 error (_("Nonsense input radix ``decimal %u''; input radix unchanged."),
3389 input_radix_1
= input_radix
= radix
;
3392 printf_filtered (_("Input radix now set to "
3393 "decimal %u, hex %x, octal %o.\n"),
3394 radix
, radix
, radix
);
3398 /* The 'set output-radix' command writes to this auxiliary variable.
3399 If the requested radix is valid, OUTPUT_RADIX is updated,
3400 otherwise, it is left unchanged. */
3402 static unsigned output_radix_1
= 10;
3405 set_output_radix (const char *args
, int from_tty
, struct cmd_list_element
*c
)
3407 set_output_radix_1 (from_tty
, output_radix_1
);
3411 set_output_radix_1 (int from_tty
, unsigned radix
)
3413 /* Validate the radix and disallow ones that we aren't prepared to
3414 handle correctly, leaving the radix unchanged. */
3418 user_print_options
.output_format
= 'x'; /* hex */
3421 user_print_options
.output_format
= 0; /* decimal */
3424 user_print_options
.output_format
= 'o'; /* octal */
3427 output_radix_1
= output_radix
;
3428 error (_("Unsupported output radix ``decimal %u''; "
3429 "output radix unchanged."),
3432 output_radix_1
= output_radix
= radix
;
3435 printf_filtered (_("Output radix now set to "
3436 "decimal %u, hex %x, octal %o.\n"),
3437 radix
, radix
, radix
);
3441 /* Set both the input and output radix at once. Try to set the output radix
3442 first, since it has the most restrictive range. An radix that is valid as
3443 an output radix is also valid as an input radix.
3445 It may be useful to have an unusual input radix. If the user wishes to
3446 set an input radix that is not valid as an output radix, he needs to use
3447 the 'set input-radix' command. */
3450 set_radix (const char *arg
, int from_tty
)
3454 radix
= (arg
== NULL
) ? 10 : parse_and_eval_long (arg
);
3455 set_output_radix_1 (0, radix
);
3456 set_input_radix_1 (0, radix
);
3459 printf_filtered (_("Input and output radices now set to "
3460 "decimal %u, hex %x, octal %o.\n"),
3461 radix
, radix
, radix
);
3465 /* Show both the input and output radices. */
3468 show_radix (const char *arg
, int from_tty
)
3472 if (input_radix
== output_radix
)
3474 printf_filtered (_("Input and output radices set to "
3475 "decimal %u, hex %x, octal %o.\n"),
3476 input_radix
, input_radix
, input_radix
);
3480 printf_filtered (_("Input radix set to decimal "
3481 "%u, hex %x, octal %o.\n"),
3482 input_radix
, input_radix
, input_radix
);
3483 printf_filtered (_("Output radix set to decimal "
3484 "%u, hex %x, octal %o.\n"),
3485 output_radix
, output_radix
, output_radix
);
3492 set_print (const char *arg
, int from_tty
)
3495 "\"set print\" must be followed by the name of a print subcommand.\n");
3496 help_list (setprintlist
, "set print ", all_commands
, gdb_stdout
);
3500 show_print (const char *args
, int from_tty
)
3502 cmd_show_list (showprintlist
, from_tty
, "");
3506 set_print_raw (const char *arg
, int from_tty
)
3509 "\"set print raw\" must be followed by the name of a \"print raw\" subcommand.\n");
3510 help_list (setprintrawlist
, "set print raw ", all_commands
, gdb_stdout
);
3514 show_print_raw (const char *args
, int from_tty
)
3516 cmd_show_list (showprintrawlist
, from_tty
, "");
3519 /* Controls printing of vtbl's. */
3521 show_vtblprint (struct ui_file
*file
, int from_tty
,
3522 struct cmd_list_element
*c
, const char *value
)
3524 fprintf_filtered (file
, _("\
3525 Printing of C++ virtual function tables is %s.\n"),
3529 /* Controls looking up an object's derived type using what we find in
3532 show_objectprint (struct ui_file
*file
, int from_tty
,
3533 struct cmd_list_element
*c
,
3536 fprintf_filtered (file
, _("\
3537 Printing of object's derived type based on vtable info is %s.\n"),
3542 show_static_field_print (struct ui_file
*file
, int from_tty
,
3543 struct cmd_list_element
*c
,
3546 fprintf_filtered (file
,
3547 _("Printing of C++ static members is %s.\n"),
3553 /* A couple typedefs to make writing the options a bit more
3555 using boolean_option_def
3556 = gdb::option::boolean_option_def
<value_print_options
>;
3557 using uinteger_option_def
3558 = gdb::option::uinteger_option_def
<value_print_options
>;
3559 using zuinteger_unlimited_option_def
3560 = gdb::option::zuinteger_unlimited_option_def
<value_print_options
>;
3562 /* Definitions of options for the "print" and "compile print"
3564 static const gdb::option::option_def value_print_option_defs
[] = {
3566 boolean_option_def
{
3568 [] (value_print_options
*opt
) { return &opt
->addressprint
; },
3569 show_addressprint
, /* show_cmd_cb */
3570 N_("Set printing of addresses."),
3571 N_("Show printing of addresses."),
3572 NULL
, /* help_doc */
3575 boolean_option_def
{
3577 [] (value_print_options
*opt
) { return &opt
->prettyformat_arrays
; },
3578 show_prettyformat_arrays
, /* show_cmd_cb */
3579 N_("Set pretty formatting of arrays."),
3580 N_("Show pretty formatting of arrays."),
3581 NULL
, /* help_doc */
3584 boolean_option_def
{
3586 [] (value_print_options
*opt
) { return &opt
->print_array_indexes
; },
3587 show_print_array_indexes
, /* show_cmd_cb */
3588 N_("Set printing of array indexes."),
3589 N_("Show printing of array indexes."),
3590 NULL
, /* help_doc */
3593 uinteger_option_def
{
3595 [] (value_print_options
*opt
) { return &opt
->print_max
; },
3596 show_print_max
, /* show_cmd_cb */
3597 N_("Set limit on string chars or array elements to print."),
3598 N_("Show limit on string chars or array elements to print."),
3599 N_("\"unlimited\" causes there to be no limit."),
3602 zuinteger_unlimited_option_def
{
3604 [] (value_print_options
*opt
) { return &opt
->max_depth
; },
3605 show_print_max_depth
, /* show_cmd_cb */
3606 N_("Set maximum print depth for nested structures, unions and arrays."),
3607 N_("Show maximum print depth for nested structures, unions, and arrays."),
3608 N_("When structures, unions, or arrays are nested beyond this depth then they\n\
3609 will be replaced with either '{...}' or '(...)' depending on the language.\n\
3610 Use \"unlimited\" to print the complete structure.")
3613 boolean_option_def
{
3615 [] (value_print_options
*opt
) { return &opt
->stop_print_at_null
; },
3616 show_stop_print_at_null
, /* show_cmd_cb */
3617 N_("Set printing of char arrays to stop at first null char."),
3618 N_("Show printing of char arrays to stop at first null char."),
3619 NULL
, /* help_doc */
3622 boolean_option_def
{
3624 [] (value_print_options
*opt
) { return &opt
->objectprint
; },
3625 show_objectprint
, /* show_cmd_cb */
3626 _("Set printing of C++ virtual function tables."),
3627 _("Show printing of C++ virtual function tables."),
3628 NULL
, /* help_doc */
3631 boolean_option_def
{
3633 [] (value_print_options
*opt
) { return &opt
->prettyformat_structs
; },
3634 show_prettyformat_structs
, /* show_cmd_cb */
3635 N_("Set pretty formatting of structures."),
3636 N_("Show pretty formatting of structures."),
3637 NULL
, /* help_doc */
3640 boolean_option_def
{
3642 [] (value_print_options
*opt
) { return &opt
->raw
; },
3643 NULL
, /* show_cmd_cb */
3644 N_("Set whether to print values in raw form."),
3645 N_("Show whether to print values in raw form."),
3646 N_("If set, values are printed in raw form, bypassing any\n\
3647 pretty-printers for that value.")
3650 uinteger_option_def
{
3652 [] (value_print_options
*opt
) { return &opt
->repeat_count_threshold
; },
3653 show_repeat_count_threshold
, /* show_cmd_cb */
3654 N_("Set threshold for repeated print elements."),
3655 N_("Show threshold for repeated print elements."),
3656 N_("\"unlimited\" causes all elements to be individually printed."),
3659 boolean_option_def
{
3661 [] (value_print_options
*opt
) { return &opt
->static_field_print
; },
3662 show_static_field_print
, /* show_cmd_cb */
3663 N_("Set printing of C++ static members."),
3664 N_("Show printing of C++ static members."),
3665 NULL
, /* help_doc */
3668 boolean_option_def
{
3670 [] (value_print_options
*opt
) { return &opt
->symbol_print
; },
3671 show_symbol_print
, /* show_cmd_cb */
3672 N_("Set printing of symbol names when printing pointers."),
3673 N_("Show printing of symbol names when printing pointers."),
3674 NULL
, /* help_doc */
3677 boolean_option_def
{
3679 [] (value_print_options
*opt
) { return &opt
->unionprint
; },
3680 show_unionprint
, /* show_cmd_cb */
3681 N_("Set printing of unions interior to structures."),
3682 N_("Show printing of unions interior to structures."),
3683 NULL
, /* help_doc */
3686 boolean_option_def
{
3688 [] (value_print_options
*opt
) { return &opt
->vtblprint
; },
3689 show_vtblprint
, /* show_cmd_cb */
3690 N_("Set printing of C++ virtual function tables."),
3691 N_("Show printing of C++ virtual function tables."),
3692 NULL
, /* help_doc */
3696 /* See valprint.h. */
3698 gdb::option::option_def_group
3699 make_value_print_options_def_group (value_print_options
*opts
)
3701 return {{value_print_option_defs
}, opts
};
3704 void _initialize_valprint ();
3706 _initialize_valprint ()
3708 cmd_list_element
*cmd
;
3710 add_prefix_cmd ("print", no_class
, set_print
,
3711 _("Generic command for setting how things print."),
3712 &setprintlist
, "set print ", 0, &setlist
);
3713 add_alias_cmd ("p", "print", no_class
, 1, &setlist
);
3714 /* Prefer set print to set prompt. */
3715 add_alias_cmd ("pr", "print", no_class
, 1, &setlist
);
3717 add_prefix_cmd ("print", no_class
, show_print
,
3718 _("Generic command for showing print settings."),
3719 &showprintlist
, "show print ", 0, &showlist
);
3720 add_alias_cmd ("p", "print", no_class
, 1, &showlist
);
3721 add_alias_cmd ("pr", "print", no_class
, 1, &showlist
);
3723 cmd
= add_prefix_cmd ("raw", no_class
, set_print_raw
,
3725 Generic command for setting what things to print in \"raw\" mode."),
3726 &setprintrawlist
, "set print raw ", 0,
3728 deprecate_cmd (cmd
, nullptr);
3730 cmd
= add_prefix_cmd ("raw", no_class
, show_print_raw
,
3731 _("Generic command for showing \"print raw\" settings."),
3732 &showprintrawlist
, "show print raw ", 0,
3734 deprecate_cmd (cmd
, nullptr);
3736 gdb::option::add_setshow_cmds_for_options
3737 (class_support
, &user_print_options
, value_print_option_defs
,
3738 &setprintlist
, &showprintlist
);
3740 add_setshow_zuinteger_cmd ("input-radix", class_support
, &input_radix_1
,
3742 Set default input radix for entering numbers."), _("\
3743 Show default input radix for entering numbers."), NULL
,
3746 &setlist
, &showlist
);
3748 add_setshow_zuinteger_cmd ("output-radix", class_support
, &output_radix_1
,
3750 Set default output radix for printing of values."), _("\
3751 Show default output radix for printing of values."), NULL
,
3754 &setlist
, &showlist
);
3756 /* The "set radix" and "show radix" commands are special in that
3757 they are like normal set and show commands but allow two normally
3758 independent variables to be either set or shown with a single
3759 command. So the usual deprecated_add_set_cmd() and [deleted]
3760 add_show_from_set() commands aren't really appropriate. */
3761 /* FIXME: i18n: With the new add_setshow_integer command, that is no
3762 longer true - show can display anything. */
3763 add_cmd ("radix", class_support
, set_radix
, _("\
3764 Set default input and output number radices.\n\
3765 Use 'set input-radix' or 'set output-radix' to independently set each.\n\
3766 Without an argument, sets both radices back to the default value of 10."),
3768 add_cmd ("radix", class_support
, show_radix
, _("\
3769 Show the default input and output number radices.\n\
3770 Use 'show input-radix' or 'show output-radix' to independently show each."),