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 struct value
*v
= full_value
;
1285 v
= value_from_component (val
, type
, embedded_offset
);
1287 ret
= apply_ext_lang_val_pretty_printer (v
, stream
, recurse
, options
,
1293 /* Handle summary mode. If the value is a scalar, print it;
1294 otherwise, print an ellipsis. */
1295 if (options
->summary
&& !val_print_scalar_type_p (type
))
1297 fprintf_filtered (stream
, "...");
1301 /* If this value is too deep then don't print it. */
1302 if (!val_print_scalar_or_string_type_p (type
, language
)
1303 && val_print_check_max_depth (stream
, recurse
, options
, language
))
1308 if (full_value
!= nullptr && language
->la_value_print_inner
!= nullptr)
1309 language
->la_value_print_inner (full_value
, stream
, recurse
,
1312 language
->la_val_print (type
, embedded_offset
, address
,
1313 stream
, recurse
, val
,
1316 catch (const gdb_exception_error
&except
)
1318 fprintf_styled (stream
, metadata_style
.style (),
1319 _("<error reading variable>"));
1323 /* Print using the given LANGUAGE the data of type TYPE located at
1324 VAL's contents buffer + EMBEDDED_OFFSET (within GDB), which came
1325 from the inferior at address ADDRESS + EMBEDDED_OFFSET, onto
1326 stdio stream STREAM according to OPTIONS. VAL is the whole object
1327 that came from ADDRESS.
1329 The language printers will pass down an adjusted EMBEDDED_OFFSET to
1330 further helper subroutines as subfields of TYPE are printed. In
1331 such cases, VAL is passed down unadjusted, so
1332 that VAL can be queried for metadata about the contents data being
1333 printed, using EMBEDDED_OFFSET as an offset into VAL's contents
1334 buffer. For example: "has this field been optimized out", or "I'm
1335 printing an object while inspecting a traceframe; has this
1336 particular piece of data been collected?".
1338 RECURSE indicates the amount of indentation to supply before
1339 continuation lines; this amount is roughly twice the value of
1343 val_print (struct type
*type
, LONGEST embedded_offset
,
1344 CORE_ADDR address
, struct ui_file
*stream
, int recurse
,
1346 const struct value_print_options
*options
,
1347 const struct language_defn
*language
)
1349 do_val_print (nullptr, type
, embedded_offset
, address
, stream
,
1350 recurse
, val
, options
, language
);
1353 /* See valprint.h. */
1356 val_print_check_max_depth (struct ui_file
*stream
, int recurse
,
1357 const struct value_print_options
*options
,
1358 const struct language_defn
*language
)
1360 if (options
->max_depth
> -1 && recurse
>= options
->max_depth
)
1362 gdb_assert (language
->la_struct_too_deep_ellipsis
!= NULL
);
1363 fputs_filtered (language
->la_struct_too_deep_ellipsis
, stream
);
1370 /* Check whether the value VAL is printable. Return 1 if it is;
1371 return 0 and print an appropriate error message to STREAM according to
1372 OPTIONS if it is not. */
1375 value_check_printable (struct value
*val
, struct ui_file
*stream
,
1376 const struct value_print_options
*options
)
1380 fprintf_styled (stream
, metadata_style
.style (),
1381 _("<address of value unknown>"));
1385 if (value_entirely_optimized_out (val
))
1387 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1388 fprintf_filtered (stream
, "...");
1390 val_print_optimized_out (val
, stream
);
1394 if (value_entirely_unavailable (val
))
1396 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1397 fprintf_filtered (stream
, "...");
1399 val_print_unavailable (stream
);
1403 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_INTERNAL_FUNCTION
)
1405 fprintf_styled (stream
, metadata_style
.style (),
1406 _("<internal function %s>"),
1407 value_internal_function_name (val
));
1411 if (type_not_associated (value_type (val
)))
1413 val_print_not_associated (stream
);
1417 if (type_not_allocated (value_type (val
)))
1419 val_print_not_allocated (stream
);
1426 /* Print using the given LANGUAGE the value VAL onto stream STREAM according
1429 This is a preferable interface to val_print, above, because it uses
1430 GDB's value mechanism. */
1433 common_val_print (struct value
*val
, struct ui_file
*stream
, int recurse
,
1434 const struct value_print_options
*options
,
1435 const struct language_defn
*language
)
1437 if (!value_check_printable (val
, stream
, options
))
1440 if (language
->la_language
== language_ada
)
1441 /* The value might have a dynamic type, which would cause trouble
1442 below when trying to extract the value contents (since the value
1443 size is determined from the type size which is unknown). So
1444 get a fixed representation of our value. */
1445 val
= ada_to_fixed_value (val
);
1447 if (value_lazy (val
))
1448 value_fetch_lazy (val
);
1450 do_val_print (val
, value_type (val
),
1451 value_embedded_offset (val
), value_address (val
),
1453 val
, options
, language
);
1456 /* See valprint.h. */
1459 common_val_print_checked (struct value
*val
, struct ui_file
*stream
,
1461 const struct value_print_options
*options
,
1462 const struct language_defn
*language
)
1464 if (!value_check_printable (val
, stream
, options
))
1466 common_val_print (val
, stream
, recurse
, options
, language
);
1469 /* Print on stream STREAM the value VAL according to OPTIONS. The value
1470 is printed using the current_language syntax. */
1473 value_print (struct value
*val
, struct ui_file
*stream
,
1474 const struct value_print_options
*options
)
1476 scoped_value_mark free_values
;
1478 if (!value_check_printable (val
, stream
, options
))
1484 = apply_ext_lang_val_pretty_printer (val
, stream
, 0, options
,
1491 LA_VALUE_PRINT (val
, stream
, options
);
1495 val_print_type_code_flags (struct type
*type
, struct value
*original_value
,
1496 int embedded_offset
, struct ui_file
*stream
)
1498 const gdb_byte
*valaddr
= (value_contents_for_printing (original_value
)
1500 ULONGEST val
= unpack_long (type
, valaddr
);
1501 int field
, nfields
= TYPE_NFIELDS (type
);
1502 struct gdbarch
*gdbarch
= get_type_arch (type
);
1503 struct type
*bool_type
= builtin_type (gdbarch
)->builtin_bool
;
1505 fputs_filtered ("[", stream
);
1506 for (field
= 0; field
< nfields
; field
++)
1508 if (TYPE_FIELD_NAME (type
, field
)[0] != '\0')
1510 struct type
*field_type
= TYPE_FIELD_TYPE (type
, field
);
1512 if (field_type
== bool_type
1513 /* We require boolean types here to be one bit wide. This is a
1514 problematic place to notify the user of an internal error
1515 though. Instead just fall through and print the field as an
1517 && TYPE_FIELD_BITSIZE (type
, field
) == 1)
1519 if (val
& ((ULONGEST
)1 << TYPE_FIELD_BITPOS (type
, field
)))
1522 styled_string (variable_name_style
.style (),
1523 TYPE_FIELD_NAME (type
, field
)));
1527 unsigned field_len
= TYPE_FIELD_BITSIZE (type
, field
);
1529 = val
>> (TYPE_FIELD_BITPOS (type
, field
) - field_len
+ 1);
1531 if (field_len
< sizeof (ULONGEST
) * TARGET_CHAR_BIT
)
1532 field_val
&= ((ULONGEST
) 1 << field_len
) - 1;
1533 fprintf_filtered (stream
, " %ps=",
1534 styled_string (variable_name_style
.style (),
1535 TYPE_FIELD_NAME (type
, field
)));
1536 if (TYPE_CODE (field_type
) == TYPE_CODE_ENUM
)
1537 generic_val_print_enum_1 (field_type
, field_val
, stream
);
1539 print_longest (stream
, 'd', 0, field_val
);
1543 fputs_filtered (" ]", stream
);
1546 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
1547 according to OPTIONS and SIZE on STREAM. Format i is not supported
1550 This is how the elements of an array or structure are printed
1554 val_print_scalar_formatted (struct type
*type
,
1555 LONGEST embedded_offset
,
1557 const struct value_print_options
*options
,
1559 struct ui_file
*stream
)
1561 struct gdbarch
*arch
= get_type_arch (type
);
1562 int unit_size
= gdbarch_addressable_memory_unit_size (arch
);
1564 gdb_assert (val
!= NULL
);
1566 /* If we get here with a string format, try again without it. Go
1567 all the way back to the language printers, which may call us
1569 if (options
->format
== 's')
1571 struct value_print_options opts
= *options
;
1574 val_print (type
, embedded_offset
, 0, stream
, 0, val
, &opts
,
1579 /* value_contents_for_printing fetches all VAL's contents. They are
1580 needed to check whether VAL is optimized-out or unavailable
1582 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
1584 /* A scalar object that does not have all bits available can't be
1585 printed, because all bits contribute to its representation. */
1586 if (value_bits_any_optimized_out (val
,
1587 TARGET_CHAR_BIT
* embedded_offset
,
1588 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
1589 val_print_optimized_out (val
, stream
);
1590 else if (!value_bytes_available (val
, embedded_offset
, TYPE_LENGTH (type
)))
1591 val_print_unavailable (stream
);
1593 print_scalar_formatted (valaddr
+ embedded_offset
* unit_size
, type
,
1594 options
, size
, stream
);
1597 /* See valprint.h. */
1600 value_print_scalar_formatted (struct value
*val
,
1601 const struct value_print_options
*options
,
1603 struct ui_file
*stream
)
1605 struct type
*type
= check_typedef (value_type (val
));
1607 gdb_assert (val
!= NULL
);
1609 /* If we get here with a string format, try again without it. Go
1610 all the way back to the language printers, which may call us
1612 if (options
->format
== 's')
1614 struct value_print_options opts
= *options
;
1617 common_val_print (val
, stream
, 0, &opts
, current_language
);
1621 /* value_contents_for_printing fetches all VAL's contents. They are
1622 needed to check whether VAL is optimized-out or unavailable
1624 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
1626 /* A scalar object that does not have all bits available can't be
1627 printed, because all bits contribute to its representation. */
1628 if (value_bits_any_optimized_out (val
, 0,
1629 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
1630 val_print_optimized_out (val
, stream
);
1631 else if (!value_bytes_available (val
, 0, TYPE_LENGTH (type
)))
1632 val_print_unavailable (stream
);
1634 print_scalar_formatted (valaddr
, type
, options
, size
, stream
);
1637 /* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g.
1638 The raison d'etre of this function is to consolidate printing of
1639 LONG_LONG's into this one function. The format chars b,h,w,g are
1640 from print_scalar_formatted(). Numbers are printed using C
1643 USE_C_FORMAT means to use C format in all cases. Without it,
1644 'o' and 'x' format do not include the standard C radix prefix
1647 Hilfinger/2004-09-09: USE_C_FORMAT was originally called USE_LOCAL
1648 and was intended to request formatting according to the current
1649 language and would be used for most integers that GDB prints. The
1650 exceptional cases were things like protocols where the format of
1651 the integer is a protocol thing, not a user-visible thing). The
1652 parameter remains to preserve the information of what things might
1653 be printed with language-specific format, should we ever resurrect
1657 print_longest (struct ui_file
*stream
, int format
, int use_c_format
,
1665 val
= int_string (val_long
, 10, 1, 0, 1); break;
1667 val
= int_string (val_long
, 10, 0, 0, 1); break;
1669 val
= int_string (val_long
, 16, 0, 0, use_c_format
); break;
1671 val
= int_string (val_long
, 16, 0, 2, 1); break;
1673 val
= int_string (val_long
, 16, 0, 4, 1); break;
1675 val
= int_string (val_long
, 16, 0, 8, 1); break;
1677 val
= int_string (val_long
, 16, 0, 16, 1); break;
1680 val
= int_string (val_long
, 8, 0, 0, use_c_format
); break;
1682 internal_error (__FILE__
, __LINE__
,
1683 _("failed internal consistency check"));
1685 fputs_filtered (val
, stream
);
1688 /* This used to be a macro, but I don't think it is called often enough
1689 to merit such treatment. */
1690 /* Convert a LONGEST to an int. This is used in contexts (e.g. number of
1691 arguments to a function, number in a value history, register number, etc.)
1692 where the value must not be larger than can fit in an int. */
1695 longest_to_int (LONGEST arg
)
1697 /* Let the compiler do the work. */
1698 int rtnval
= (int) arg
;
1700 /* Check for overflows or underflows. */
1701 if (sizeof (LONGEST
) > sizeof (int))
1705 error (_("Value out of range."));
1711 /* Print a floating point value of floating-point type TYPE,
1712 pointed to in GDB by VALADDR, on STREAM. */
1715 print_floating (const gdb_byte
*valaddr
, struct type
*type
,
1716 struct ui_file
*stream
)
1718 std::string str
= target_float_to_string (valaddr
, type
);
1719 fputs_filtered (str
.c_str (), stream
);
1723 print_binary_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1724 unsigned len
, enum bfd_endian byte_order
, bool zero_pad
)
1729 bool seen_a_one
= false;
1731 /* Declared "int" so it will be signed.
1732 This ensures that right shift will shift in zeros. */
1734 const int mask
= 0x080;
1736 if (byte_order
== BFD_ENDIAN_BIG
)
1742 /* Every byte has 8 binary characters; peel off
1743 and print from the MSB end. */
1745 for (i
= 0; i
< (HOST_CHAR_BIT
* sizeof (*p
)); i
++)
1747 if (*p
& (mask
>> i
))
1752 if (zero_pad
|| seen_a_one
|| b
== '1')
1753 fputc_filtered (b
, stream
);
1761 for (p
= valaddr
+ len
- 1;
1765 for (i
= 0; i
< (HOST_CHAR_BIT
* sizeof (*p
)); i
++)
1767 if (*p
& (mask
>> i
))
1772 if (zero_pad
|| seen_a_one
|| b
== '1')
1773 fputc_filtered (b
, stream
);
1780 /* When not zero-padding, ensure that something is printed when the
1782 if (!zero_pad
&& !seen_a_one
)
1783 fputc_filtered ('0', stream
);
1786 /* A helper for print_octal_chars that emits a single octal digit,
1787 optionally suppressing it if is zero and updating SEEN_A_ONE. */
1790 emit_octal_digit (struct ui_file
*stream
, bool *seen_a_one
, int digit
)
1792 if (*seen_a_one
|| digit
!= 0)
1793 fprintf_filtered (stream
, "%o", digit
);
1798 /* VALADDR points to an integer of LEN bytes.
1799 Print it in octal on stream or format it in buf. */
1802 print_octal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1803 unsigned len
, enum bfd_endian byte_order
)
1806 unsigned char octa1
, octa2
, octa3
, carry
;
1809 /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track
1810 * the extra bits, which cycle every three bytes:
1812 * Byte side: 0 1 2 3
1814 * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 |
1816 * Octal side: 0 1 carry 3 4 carry ...
1818 * Cycle number: 0 1 2
1820 * But of course we are printing from the high side, so we have to
1821 * figure out where in the cycle we are so that we end up with no
1822 * left over bits at the end.
1824 #define BITS_IN_OCTAL 3
1825 #define HIGH_ZERO 0340
1826 #define LOW_ZERO 0034
1827 #define CARRY_ZERO 0003
1828 static_assert (HIGH_ZERO
+ LOW_ZERO
+ CARRY_ZERO
== 0xff,
1829 "cycle zero constants are wrong");
1830 #define HIGH_ONE 0200
1831 #define MID_ONE 0160
1832 #define LOW_ONE 0016
1833 #define CARRY_ONE 0001
1834 static_assert (HIGH_ONE
+ MID_ONE
+ LOW_ONE
+ CARRY_ONE
== 0xff,
1835 "cycle one constants are wrong");
1836 #define HIGH_TWO 0300
1837 #define MID_TWO 0070
1838 #define LOW_TWO 0007
1839 static_assert (HIGH_TWO
+ MID_TWO
+ LOW_TWO
== 0xff,
1840 "cycle two constants are wrong");
1842 /* For 32 we start in cycle 2, with two bits and one bit carry;
1843 for 64 in cycle in cycle 1, with one bit and a two bit carry. */
1845 cycle
= (len
* HOST_CHAR_BIT
) % BITS_IN_OCTAL
;
1848 fputs_filtered ("0", stream
);
1849 bool seen_a_one
= false;
1850 if (byte_order
== BFD_ENDIAN_BIG
)
1859 /* No carry in, carry out two bits. */
1861 octa1
= (HIGH_ZERO
& *p
) >> 5;
1862 octa2
= (LOW_ZERO
& *p
) >> 2;
1863 carry
= (CARRY_ZERO
& *p
);
1864 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1865 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1869 /* Carry in two bits, carry out one bit. */
1871 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1872 octa2
= (MID_ONE
& *p
) >> 4;
1873 octa3
= (LOW_ONE
& *p
) >> 1;
1874 carry
= (CARRY_ONE
& *p
);
1875 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1876 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1877 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1881 /* Carry in one bit, no carry out. */
1883 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1884 octa2
= (MID_TWO
& *p
) >> 3;
1885 octa3
= (LOW_TWO
& *p
);
1887 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1888 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1889 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1893 error (_("Internal error in octal conversion;"));
1897 cycle
= cycle
% BITS_IN_OCTAL
;
1902 for (p
= valaddr
+ len
- 1;
1909 /* Carry out, no carry in */
1911 octa1
= (HIGH_ZERO
& *p
) >> 5;
1912 octa2
= (LOW_ZERO
& *p
) >> 2;
1913 carry
= (CARRY_ZERO
& *p
);
1914 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1915 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1919 /* Carry in, carry out */
1921 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1922 octa2
= (MID_ONE
& *p
) >> 4;
1923 octa3
= (LOW_ONE
& *p
) >> 1;
1924 carry
= (CARRY_ONE
& *p
);
1925 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1926 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1927 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1931 /* Carry in, no carry out */
1933 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1934 octa2
= (MID_TWO
& *p
) >> 3;
1935 octa3
= (LOW_TWO
& *p
);
1937 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1938 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1939 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1943 error (_("Internal error in octal conversion;"));
1947 cycle
= cycle
% BITS_IN_OCTAL
;
1953 /* Possibly negate the integer represented by BYTES. It contains LEN
1954 bytes in the specified byte order. If the integer is negative,
1955 copy it into OUT_VEC, negate it, and return true. Otherwise, do
1956 nothing and return false. */
1959 maybe_negate_by_bytes (const gdb_byte
*bytes
, unsigned len
,
1960 enum bfd_endian byte_order
,
1961 gdb::byte_vector
*out_vec
)
1964 gdb_assert (len
> 0);
1965 if (byte_order
== BFD_ENDIAN_BIG
)
1966 sign_byte
= bytes
[0];
1968 sign_byte
= bytes
[len
- 1];
1969 if ((sign_byte
& 0x80) == 0)
1972 out_vec
->resize (len
);
1974 /* Compute -x == 1 + ~x. */
1975 if (byte_order
== BFD_ENDIAN_LITTLE
)
1978 for (unsigned i
= 0; i
< len
; ++i
)
1980 unsigned tem
= (0xff & ~bytes
[i
]) + carry
;
1981 (*out_vec
)[i
] = tem
& 0xff;
1988 for (unsigned i
= len
; i
> 0; --i
)
1990 unsigned tem
= (0xff & ~bytes
[i
- 1]) + carry
;
1991 (*out_vec
)[i
- 1] = tem
& 0xff;
1999 /* VALADDR points to an integer of LEN bytes.
2000 Print it in decimal on stream or format it in buf. */
2003 print_decimal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
2004 unsigned len
, bool is_signed
,
2005 enum bfd_endian byte_order
)
2008 #define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */
2009 #define CARRY_LEFT( x ) ((x) % TEN)
2010 #define SHIFT( x ) ((x) << 4)
2011 #define LOW_NIBBLE( x ) ( (x) & 0x00F)
2012 #define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4)
2017 int i
, j
, decimal_digits
;
2021 gdb::byte_vector negated_bytes
;
2023 && maybe_negate_by_bytes (valaddr
, len
, byte_order
, &negated_bytes
))
2025 fputs_filtered ("-", stream
);
2026 valaddr
= negated_bytes
.data ();
2029 /* Base-ten number is less than twice as many digits
2030 as the base 16 number, which is 2 digits per byte. */
2032 decimal_len
= len
* 2 * 2;
2033 std::vector
<unsigned char> digits (decimal_len
, 0);
2035 /* Ok, we have an unknown number of bytes of data to be printed in
2038 * Given a hex number (in nibbles) as XYZ, we start by taking X and
2039 * decimalizing it as "x1 x2" in two decimal nibbles. Then we multiply
2040 * the nibbles by 16, add Y and re-decimalize. Repeat with Z.
2042 * The trick is that "digits" holds a base-10 number, but sometimes
2043 * the individual digits are > 10.
2045 * Outer loop is per nibble (hex digit) of input, from MSD end to
2048 decimal_digits
= 0; /* Number of decimal digits so far */
2049 p
= (byte_order
== BFD_ENDIAN_BIG
) ? valaddr
: valaddr
+ len
- 1;
2051 while ((byte_order
== BFD_ENDIAN_BIG
) ? (p
< valaddr
+ len
) : (p
>= valaddr
))
2054 * Multiply current base-ten number by 16 in place.
2055 * Each digit was between 0 and 9, now is between
2058 for (j
= 0; j
< decimal_digits
; j
++)
2060 digits
[j
] = SHIFT (digits
[j
]);
2063 /* Take the next nibble off the input and add it to what
2064 * we've got in the LSB position. Bottom 'digit' is now
2065 * between 0 and 159.
2067 * "flip" is used to run this loop twice for each byte.
2071 /* Take top nibble. */
2073 digits
[0] += HIGH_NIBBLE (*p
);
2078 /* Take low nibble and bump our pointer "p". */
2080 digits
[0] += LOW_NIBBLE (*p
);
2081 if (byte_order
== BFD_ENDIAN_BIG
)
2088 /* Re-decimalize. We have to do this often enough
2089 * that we don't overflow, but once per nibble is
2090 * overkill. Easier this way, though. Note that the
2091 * carry is often larger than 10 (e.g. max initial
2092 * carry out of lowest nibble is 15, could bubble all
2093 * the way up greater than 10). So we have to do
2094 * the carrying beyond the last current digit.
2097 for (j
= 0; j
< decimal_len
- 1; j
++)
2101 /* "/" won't handle an unsigned char with
2102 * a value that if signed would be negative.
2103 * So extend to longword int via "dummy".
2106 carry
= CARRY_OUT (dummy
);
2107 digits
[j
] = CARRY_LEFT (dummy
);
2109 if (j
>= decimal_digits
&& carry
== 0)
2112 * All higher digits are 0 and we
2113 * no longer have a carry.
2115 * Note: "j" is 0-based, "decimal_digits" is
2118 decimal_digits
= j
+ 1;
2124 /* Ok, now "digits" is the decimal representation, with
2125 the "decimal_digits" actual digits. Print! */
2127 for (i
= decimal_digits
- 1; i
> 0 && digits
[i
] == 0; --i
)
2132 fprintf_filtered (stream
, "%1d", digits
[i
]);
2136 /* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */
2139 print_hex_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
2140 unsigned len
, enum bfd_endian byte_order
,
2145 fputs_filtered ("0x", stream
);
2146 if (byte_order
== BFD_ENDIAN_BIG
)
2152 /* Strip leading 0 bytes, but be sure to leave at least a
2153 single byte at the end. */
2154 for (; p
< valaddr
+ len
- 1 && !*p
; ++p
)
2158 const gdb_byte
*first
= p
;
2163 /* When not zero-padding, use a different format for the
2164 very first byte printed. */
2165 if (!zero_pad
&& p
== first
)
2166 fprintf_filtered (stream
, "%x", *p
);
2168 fprintf_filtered (stream
, "%02x", *p
);
2173 p
= valaddr
+ len
- 1;
2177 /* Strip leading 0 bytes, but be sure to leave at least a
2178 single byte at the end. */
2179 for (; p
>= valaddr
+ 1 && !*p
; --p
)
2183 const gdb_byte
*first
= p
;
2188 /* When not zero-padding, use a different format for the
2189 very first byte printed. */
2190 if (!zero_pad
&& p
== first
)
2191 fprintf_filtered (stream
, "%x", *p
);
2193 fprintf_filtered (stream
, "%02x", *p
);
2198 /* VALADDR points to a char integer of LEN bytes.
2199 Print it out in appropriate language form on stream.
2200 Omit any leading zero chars. */
2203 print_char_chars (struct ui_file
*stream
, struct type
*type
,
2204 const gdb_byte
*valaddr
,
2205 unsigned len
, enum bfd_endian byte_order
)
2209 if (byte_order
== BFD_ENDIAN_BIG
)
2212 while (p
< valaddr
+ len
- 1 && *p
== 0)
2215 while (p
< valaddr
+ len
)
2217 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
2223 p
= valaddr
+ len
- 1;
2224 while (p
> valaddr
&& *p
== 0)
2227 while (p
>= valaddr
)
2229 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
2235 /* Print function pointer with inferior address ADDRESS onto stdio
2239 print_function_pointer_address (const struct value_print_options
*options
,
2240 struct gdbarch
*gdbarch
,
2242 struct ui_file
*stream
)
2245 = gdbarch_convert_from_func_ptr_addr (gdbarch
, address
,
2246 current_top_target ());
2248 /* If the function pointer is represented by a description, print
2249 the address of the description. */
2250 if (options
->addressprint
&& func_addr
!= address
)
2252 fputs_filtered ("@", stream
);
2253 fputs_filtered (paddress (gdbarch
, address
), stream
);
2254 fputs_filtered (": ", stream
);
2256 print_address_demangle (options
, gdbarch
, func_addr
, stream
, demangle
);
2260 /* Print on STREAM using the given OPTIONS the index for the element
2261 at INDEX of an array whose index type is INDEX_TYPE. */
2264 maybe_print_array_index (struct type
*index_type
, LONGEST index
,
2265 struct ui_file
*stream
,
2266 const struct value_print_options
*options
)
2268 struct value
*index_value
;
2270 if (!options
->print_array_indexes
)
2273 index_value
= value_from_longest (index_type
, index
);
2275 LA_PRINT_ARRAY_INDEX (index_value
, stream
, options
);
2278 /* Called by various <lang>_val_print routines to print elements of an
2279 array in the form "<elem1>, <elem2>, <elem3>, ...".
2281 (FIXME?) Assumes array element separator is a comma, which is correct
2282 for all languages currently handled.
2283 (FIXME?) Some languages have a notation for repeated array elements,
2284 perhaps we should try to use that notation when appropriate. */
2287 val_print_array_elements (struct type
*type
,
2288 LONGEST embedded_offset
,
2289 CORE_ADDR address
, struct ui_file
*stream
,
2292 const struct value_print_options
*options
,
2295 unsigned int things_printed
= 0;
2297 struct type
*elttype
, *index_type
, *base_index_type
;
2299 /* Position of the array element we are examining to see
2300 whether it is repeated. */
2302 /* Number of repetitions we have detected so far. */
2304 LONGEST low_bound
, high_bound
;
2305 LONGEST low_pos
, high_pos
;
2307 elttype
= TYPE_TARGET_TYPE (type
);
2308 eltlen
= type_length_units (check_typedef (elttype
));
2309 index_type
= TYPE_INDEX_TYPE (type
);
2311 if (get_array_bounds (type
, &low_bound
, &high_bound
))
2313 if (TYPE_CODE (index_type
) == TYPE_CODE_RANGE
)
2314 base_index_type
= TYPE_TARGET_TYPE (index_type
);
2316 base_index_type
= index_type
;
2318 /* Non-contiguous enumerations types can by used as index types
2319 in some languages (e.g. Ada). In this case, the array length
2320 shall be computed from the positions of the first and last
2321 literal in the enumeration type, and not from the values
2322 of these literals. */
2323 if (!discrete_position (base_index_type
, low_bound
, &low_pos
)
2324 || !discrete_position (base_index_type
, high_bound
, &high_pos
))
2326 warning (_("unable to get positions in array, use bounds instead"));
2327 low_pos
= low_bound
;
2328 high_pos
= high_bound
;
2331 /* The array length should normally be HIGH_POS - LOW_POS + 1.
2332 But we have to be a little extra careful, because some languages
2333 such as Ada allow LOW_POS to be greater than HIGH_POS for
2334 empty arrays. In that situation, the array length is just zero,
2336 if (low_pos
> high_pos
)
2339 len
= high_pos
- low_pos
+ 1;
2343 warning (_("unable to get bounds of array, assuming null array"));
2348 annotate_array_section_begin (i
, elttype
);
2350 for (; i
< len
&& things_printed
< options
->print_max
; i
++)
2354 if (options
->prettyformat_arrays
)
2356 fprintf_filtered (stream
, ",\n");
2357 print_spaces_filtered (2 + 2 * recurse
, stream
);
2361 fprintf_filtered (stream
, ", ");
2364 wrap_here (n_spaces (2 + 2 * recurse
));
2365 maybe_print_array_index (index_type
, i
+ low_bound
,
2370 /* Only check for reps if repeat_count_threshold is not set to
2371 UINT_MAX (unlimited). */
2372 if (options
->repeat_count_threshold
< UINT_MAX
)
2375 && value_contents_eq (val
,
2376 embedded_offset
+ i
* eltlen
,
2387 if (reps
> options
->repeat_count_threshold
)
2389 val_print (elttype
, embedded_offset
+ i
* eltlen
,
2390 address
, stream
, recurse
+ 1, val
, options
,
2392 annotate_elt_rep (reps
);
2393 fprintf_filtered (stream
, " %p[<repeats %u times>%p]",
2394 metadata_style
.style ().ptr (), reps
, nullptr);
2395 annotate_elt_rep_end ();
2398 things_printed
+= options
->repeat_count_threshold
;
2402 val_print (elttype
, embedded_offset
+ i
* eltlen
,
2404 stream
, recurse
+ 1, val
, options
, current_language
);
2409 annotate_array_section_end ();
2412 fprintf_filtered (stream
, "...");
2416 /* See valprint.h. */
2419 value_print_array_elements (struct value
*val
, struct ui_file
*stream
,
2421 const struct value_print_options
*options
,
2424 unsigned int things_printed
= 0;
2426 struct type
*elttype
, *index_type
, *base_index_type
;
2428 /* Position of the array element we are examining to see
2429 whether it is repeated. */
2431 /* Number of repetitions we have detected so far. */
2433 LONGEST low_bound
, high_bound
;
2434 LONGEST low_pos
, high_pos
;
2436 struct type
*type
= check_typedef (value_type (val
));
2438 elttype
= TYPE_TARGET_TYPE (type
);
2439 eltlen
= type_length_units (check_typedef (elttype
));
2440 index_type
= TYPE_INDEX_TYPE (type
);
2442 if (get_array_bounds (type
, &low_bound
, &high_bound
))
2444 if (TYPE_CODE (index_type
) == TYPE_CODE_RANGE
)
2445 base_index_type
= TYPE_TARGET_TYPE (index_type
);
2447 base_index_type
= index_type
;
2449 /* Non-contiguous enumerations types can by used as index types
2450 in some languages (e.g. Ada). In this case, the array length
2451 shall be computed from the positions of the first and last
2452 literal in the enumeration type, and not from the values
2453 of these literals. */
2454 if (!discrete_position (base_index_type
, low_bound
, &low_pos
)
2455 || !discrete_position (base_index_type
, high_bound
, &high_pos
))
2457 warning (_("unable to get positions in array, use bounds instead"));
2458 low_pos
= low_bound
;
2459 high_pos
= high_bound
;
2462 /* The array length should normally be HIGH_POS - LOW_POS + 1.
2463 But we have to be a little extra careful, because some languages
2464 such as Ada allow LOW_POS to be greater than HIGH_POS for
2465 empty arrays. In that situation, the array length is just zero,
2467 if (low_pos
> high_pos
)
2470 len
= high_pos
- low_pos
+ 1;
2474 warning (_("unable to get bounds of array, assuming null array"));
2479 annotate_array_section_begin (i
, elttype
);
2481 for (; i
< len
&& things_printed
< options
->print_max
; i
++)
2483 scoped_value_mark free_values
;
2487 if (options
->prettyformat_arrays
)
2489 fprintf_filtered (stream
, ",\n");
2490 print_spaces_filtered (2 + 2 * recurse
, stream
);
2493 fprintf_filtered (stream
, ", ");
2495 wrap_here (n_spaces (2 + 2 * recurse
));
2496 maybe_print_array_index (index_type
, i
+ low_bound
,
2501 /* Only check for reps if repeat_count_threshold is not set to
2502 UINT_MAX (unlimited). */
2503 if (options
->repeat_count_threshold
< UINT_MAX
)
2506 && value_contents_eq (val
, i
* eltlen
,
2515 struct value
*element
= value_from_component (val
, elttype
, eltlen
* i
);
2516 common_val_print (element
, stream
, recurse
+ 1, options
,
2519 if (reps
> options
->repeat_count_threshold
)
2521 annotate_elt_rep (reps
);
2522 fprintf_filtered (stream
, " %p[<repeats %u times>%p]",
2523 metadata_style
.style ().ptr (), reps
, nullptr);
2524 annotate_elt_rep_end ();
2527 things_printed
+= options
->repeat_count_threshold
;
2535 annotate_array_section_end ();
2537 fprintf_filtered (stream
, "...");
2540 /* Read LEN bytes of target memory at address MEMADDR, placing the
2541 results in GDB's memory at MYADDR. Returns a count of the bytes
2542 actually read, and optionally a target_xfer_status value in the
2543 location pointed to by ERRPTR if ERRPTR is non-null. */
2545 /* FIXME: cagney/1999-10-14: Only used by val_print_string. Can this
2546 function be eliminated. */
2549 partial_memory_read (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
2550 int len
, int *errptr
)
2552 int nread
; /* Number of bytes actually read. */
2553 int errcode
; /* Error from last read. */
2555 /* First try a complete read. */
2556 errcode
= target_read_memory (memaddr
, myaddr
, len
);
2564 /* Loop, reading one byte at a time until we get as much as we can. */
2565 for (errcode
= 0, nread
= 0; len
> 0 && errcode
== 0; nread
++, len
--)
2567 errcode
= target_read_memory (memaddr
++, myaddr
++, 1);
2569 /* If an error, the last read was unsuccessful, so adjust count. */
2582 /* Read a string from the inferior, at ADDR, with LEN characters of
2583 WIDTH bytes each. Fetch at most FETCHLIMIT characters. BUFFER
2584 will be set to a newly allocated buffer containing the string, and
2585 BYTES_READ will be set to the number of bytes read. Returns 0 on
2586 success, or a target_xfer_status on failure.
2588 If LEN > 0, reads the lesser of LEN or FETCHLIMIT characters
2589 (including eventual NULs in the middle or end of the string).
2591 If LEN is -1, stops at the first null character (not necessarily
2592 the first null byte) up to a maximum of FETCHLIMIT characters. Set
2593 FETCHLIMIT to UINT_MAX to read as many characters as possible from
2596 Unless an exception is thrown, BUFFER will always be allocated, even on
2597 failure. In this case, some characters might have been read before the
2598 failure happened. Check BYTES_READ to recognize this situation.
2600 Note: There was a FIXME asking to make this code use target_read_string,
2601 but this function is more general (can read past null characters, up to
2602 given LEN). Besides, it is used much more often than target_read_string
2603 so it is more tested. Perhaps callers of target_read_string should use
2604 this function instead? */
2607 read_string (CORE_ADDR addr
, int len
, int width
, unsigned int fetchlimit
,
2608 enum bfd_endian byte_order
, gdb::unique_xmalloc_ptr
<gdb_byte
> *buffer
,
2611 int errcode
; /* Errno returned from bad reads. */
2612 unsigned int nfetch
; /* Chars to fetch / chars fetched. */
2613 gdb_byte
*bufptr
; /* Pointer to next available byte in
2616 /* Loop until we either have all the characters, or we encounter
2617 some error, such as bumping into the end of the address space. */
2619 buffer
->reset (nullptr);
2623 /* We want fetchlimit chars, so we might as well read them all in
2625 unsigned int fetchlen
= std::min ((unsigned) len
, fetchlimit
);
2627 buffer
->reset ((gdb_byte
*) xmalloc (fetchlen
* width
));
2628 bufptr
= buffer
->get ();
2630 nfetch
= partial_memory_read (addr
, bufptr
, fetchlen
* width
, &errcode
)
2632 addr
+= nfetch
* width
;
2633 bufptr
+= nfetch
* width
;
2637 unsigned long bufsize
= 0;
2638 unsigned int chunksize
; /* Size of each fetch, in chars. */
2639 int found_nul
; /* Non-zero if we found the nul char. */
2640 gdb_byte
*limit
; /* First location past end of fetch buffer. */
2643 /* We are looking for a NUL terminator to end the fetching, so we
2644 might as well read in blocks that are large enough to be efficient,
2645 but not so large as to be slow if fetchlimit happens to be large.
2646 So we choose the minimum of 8 and fetchlimit. We used to use 200
2647 instead of 8 but 200 is way too big for remote debugging over a
2649 chunksize
= std::min (8u, fetchlimit
);
2654 nfetch
= std::min ((unsigned long) chunksize
, fetchlimit
- bufsize
);
2656 if (*buffer
== NULL
)
2657 buffer
->reset ((gdb_byte
*) xmalloc (nfetch
* width
));
2659 buffer
->reset ((gdb_byte
*) xrealloc (buffer
->release (),
2660 (nfetch
+ bufsize
) * width
));
2662 bufptr
= buffer
->get () + bufsize
* width
;
2665 /* Read as much as we can. */
2666 nfetch
= partial_memory_read (addr
, bufptr
, nfetch
* width
, &errcode
)
2669 /* Scan this chunk for the null character that terminates the string
2670 to print. If found, we don't need to fetch any more. Note
2671 that bufptr is explicitly left pointing at the next character
2672 after the null character, or at the next character after the end
2675 limit
= bufptr
+ nfetch
* width
;
2676 while (bufptr
< limit
)
2680 c
= extract_unsigned_integer (bufptr
, width
, byte_order
);
2685 /* We don't care about any error which happened after
2686 the NUL terminator. */
2693 while (errcode
== 0 /* no error */
2694 && bufptr
- buffer
->get () < fetchlimit
* width
/* no overrun */
2695 && !found_nul
); /* haven't found NUL yet */
2698 { /* Length of string is really 0! */
2699 /* We always allocate *buffer. */
2700 buffer
->reset ((gdb_byte
*) xmalloc (1));
2701 bufptr
= buffer
->get ();
2705 /* bufptr and addr now point immediately beyond the last byte which we
2706 consider part of the string (including a '\0' which ends the string). */
2707 *bytes_read
= bufptr
- buffer
->get ();
2714 /* Return true if print_wchar can display W without resorting to a
2715 numeric escape, false otherwise. */
2718 wchar_printable (gdb_wchar_t w
)
2720 return (gdb_iswprint (w
)
2721 || w
== LCST ('\a') || w
== LCST ('\b')
2722 || w
== LCST ('\f') || w
== LCST ('\n')
2723 || w
== LCST ('\r') || w
== LCST ('\t')
2724 || w
== LCST ('\v'));
2727 /* A helper function that converts the contents of STRING to wide
2728 characters and then appends them to OUTPUT. */
2731 append_string_as_wide (const char *string
,
2732 struct obstack
*output
)
2734 for (; *string
; ++string
)
2736 gdb_wchar_t w
= gdb_btowc (*string
);
2737 obstack_grow (output
, &w
, sizeof (gdb_wchar_t
));
2741 /* Print a wide character W to OUTPUT. ORIG is a pointer to the
2742 original (target) bytes representing the character, ORIG_LEN is the
2743 number of valid bytes. WIDTH is the number of bytes in a base
2744 characters of the type. OUTPUT is an obstack to which wide
2745 characters are emitted. QUOTER is a (narrow) character indicating
2746 the style of quotes surrounding the character to be printed.
2747 NEED_ESCAPE is an in/out flag which is used to track numeric
2748 escapes across calls. */
2751 print_wchar (gdb_wint_t w
, const gdb_byte
*orig
,
2752 int orig_len
, int width
,
2753 enum bfd_endian byte_order
,
2754 struct obstack
*output
,
2755 int quoter
, int *need_escapep
)
2757 int need_escape
= *need_escapep
;
2761 /* iswprint implementation on Windows returns 1 for tab character.
2762 In order to avoid different printout on this host, we explicitly
2763 use wchar_printable function. */
2767 obstack_grow_wstr (output
, LCST ("\\a"));
2770 obstack_grow_wstr (output
, LCST ("\\b"));
2773 obstack_grow_wstr (output
, LCST ("\\f"));
2776 obstack_grow_wstr (output
, LCST ("\\n"));
2779 obstack_grow_wstr (output
, LCST ("\\r"));
2782 obstack_grow_wstr (output
, LCST ("\\t"));
2785 obstack_grow_wstr (output
, LCST ("\\v"));
2789 if (wchar_printable (w
) && (!need_escape
|| (!gdb_iswdigit (w
)
2791 && w
!= LCST ('9'))))
2793 gdb_wchar_t wchar
= w
;
2795 if (w
== gdb_btowc (quoter
) || w
== LCST ('\\'))
2796 obstack_grow_wstr (output
, LCST ("\\"));
2797 obstack_grow (output
, &wchar
, sizeof (gdb_wchar_t
));
2803 for (i
= 0; i
+ width
<= orig_len
; i
+= width
)
2808 value
= extract_unsigned_integer (&orig
[i
], width
,
2810 /* If the value fits in 3 octal digits, print it that
2811 way. Otherwise, print it as a hex escape. */
2813 xsnprintf (octal
, sizeof (octal
), "\\%.3o",
2814 (int) (value
& 0777));
2816 xsnprintf (octal
, sizeof (octal
), "\\x%lx", (long) value
);
2817 append_string_as_wide (octal
, output
);
2819 /* If we somehow have extra bytes, print them now. */
2820 while (i
< orig_len
)
2824 xsnprintf (octal
, sizeof (octal
), "\\%.3o", orig
[i
] & 0xff);
2825 append_string_as_wide (octal
, output
);
2836 /* Print the character C on STREAM as part of the contents of a
2837 literal string whose delimiter is QUOTER. ENCODING names the
2841 generic_emit_char (int c
, struct type
*type
, struct ui_file
*stream
,
2842 int quoter
, const char *encoding
)
2844 enum bfd_endian byte_order
2845 = type_byte_order (type
);
2847 int need_escape
= 0;
2849 c_buf
= (gdb_byte
*) alloca (TYPE_LENGTH (type
));
2850 pack_long (c_buf
, type
, c
);
2852 wchar_iterator
iter (c_buf
, TYPE_LENGTH (type
), encoding
, TYPE_LENGTH (type
));
2854 /* This holds the printable form of the wchar_t data. */
2855 auto_obstack wchar_buf
;
2861 const gdb_byte
*buf
;
2863 int print_escape
= 1;
2864 enum wchar_iterate_result result
;
2866 num_chars
= iter
.iterate (&result
, &chars
, &buf
, &buflen
);
2871 /* If all characters are printable, print them. Otherwise,
2872 we're going to have to print an escape sequence. We
2873 check all characters because we want to print the target
2874 bytes in the escape sequence, and we don't know character
2875 boundaries there. */
2879 for (i
= 0; i
< num_chars
; ++i
)
2880 if (!wchar_printable (chars
[i
]))
2888 for (i
= 0; i
< num_chars
; ++i
)
2889 print_wchar (chars
[i
], buf
, buflen
,
2890 TYPE_LENGTH (type
), byte_order
,
2891 &wchar_buf
, quoter
, &need_escape
);
2895 /* This handles the NUM_CHARS == 0 case as well. */
2897 print_wchar (gdb_WEOF
, buf
, buflen
, TYPE_LENGTH (type
),
2898 byte_order
, &wchar_buf
, quoter
, &need_escape
);
2901 /* The output in the host encoding. */
2902 auto_obstack output
;
2904 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2905 (gdb_byte
*) obstack_base (&wchar_buf
),
2906 obstack_object_size (&wchar_buf
),
2907 sizeof (gdb_wchar_t
), &output
, translit_char
);
2908 obstack_1grow (&output
, '\0');
2910 fputs_filtered ((const char *) obstack_base (&output
), stream
);
2913 /* Return the repeat count of the next character/byte in ITER,
2914 storing the result in VEC. */
2917 count_next_character (wchar_iterator
*iter
,
2918 std::vector
<converted_character
> *vec
)
2920 struct converted_character
*current
;
2924 struct converted_character tmp
;
2928 = iter
->iterate (&tmp
.result
, &chars
, &tmp
.buf
, &tmp
.buflen
);
2929 if (tmp
.num_chars
> 0)
2931 gdb_assert (tmp
.num_chars
< MAX_WCHARS
);
2932 memcpy (tmp
.chars
, chars
, tmp
.num_chars
* sizeof (gdb_wchar_t
));
2934 vec
->push_back (tmp
);
2937 current
= &vec
->back ();
2939 /* Count repeated characters or bytes. */
2940 current
->repeat_count
= 1;
2941 if (current
->num_chars
== -1)
2949 struct converted_character d
;
2956 /* Get the next character. */
2957 d
.num_chars
= iter
->iterate (&d
.result
, &chars
, &d
.buf
, &d
.buflen
);
2959 /* If a character was successfully converted, save the character
2960 into the converted character. */
2961 if (d
.num_chars
> 0)
2963 gdb_assert (d
.num_chars
< MAX_WCHARS
);
2964 memcpy (d
.chars
, chars
, WCHAR_BUFLEN (d
.num_chars
));
2967 /* Determine if the current character is the same as this
2969 if (d
.num_chars
== current
->num_chars
&& d
.result
== current
->result
)
2971 /* There are two cases to consider:
2973 1) Equality of converted character (num_chars > 0)
2974 2) Equality of non-converted character (num_chars == 0) */
2975 if ((current
->num_chars
> 0
2976 && memcmp (current
->chars
, d
.chars
,
2977 WCHAR_BUFLEN (current
->num_chars
)) == 0)
2978 || (current
->num_chars
== 0
2979 && current
->buflen
== d
.buflen
2980 && memcmp (current
->buf
, d
.buf
, current
->buflen
) == 0))
2981 ++current
->repeat_count
;
2989 /* Push this next converted character onto the result vector. */
2990 repeat
= current
->repeat_count
;
2996 /* Print the characters in CHARS to the OBSTACK. QUOTE_CHAR is the quote
2997 character to use with string output. WIDTH is the size of the output
2998 character type. BYTE_ORDER is the target byte order. OPTIONS
2999 is the user's print options. */
3002 print_converted_chars_to_obstack (struct obstack
*obstack
,
3003 const std::vector
<converted_character
> &chars
,
3004 int quote_char
, int width
,
3005 enum bfd_endian byte_order
,
3006 const struct value_print_options
*options
)
3009 const converted_character
*elem
;
3010 enum {START
, SINGLE
, REPEAT
, INCOMPLETE
, FINISH
} state
, last
;
3011 gdb_wchar_t wide_quote_char
= gdb_btowc (quote_char
);
3012 int need_escape
= 0;
3014 /* Set the start state. */
3016 last
= state
= START
;
3024 /* Nothing to do. */
3031 /* We are outputting a single character
3032 (< options->repeat_count_threshold). */
3036 /* We were outputting some other type of content, so we
3037 must output and a comma and a quote. */
3039 obstack_grow_wstr (obstack
, LCST (", "));
3040 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
3042 /* Output the character. */
3043 for (j
= 0; j
< elem
->repeat_count
; ++j
)
3045 if (elem
->result
== wchar_iterate_ok
)
3046 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
3047 byte_order
, obstack
, quote_char
, &need_escape
);
3049 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
3050 byte_order
, obstack
, quote_char
, &need_escape
);
3059 /* We are outputting a character with a repeat count
3060 greater than options->repeat_count_threshold. */
3064 /* We were outputting a single string. Terminate the
3066 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
3069 obstack_grow_wstr (obstack
, LCST (", "));
3071 /* Output the character and repeat string. */
3072 obstack_grow_wstr (obstack
, LCST ("'"));
3073 if (elem
->result
== wchar_iterate_ok
)
3074 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
3075 byte_order
, obstack
, quote_char
, &need_escape
);
3077 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
3078 byte_order
, obstack
, quote_char
, &need_escape
);
3079 obstack_grow_wstr (obstack
, LCST ("'"));
3080 std::string s
= string_printf (_(" <repeats %u times>"),
3081 elem
->repeat_count
);
3082 for (j
= 0; s
[j
]; ++j
)
3084 gdb_wchar_t w
= gdb_btowc (s
[j
]);
3085 obstack_grow (obstack
, &w
, sizeof (gdb_wchar_t
));
3091 /* We are outputting an incomplete sequence. */
3094 /* If we were outputting a string of SINGLE characters,
3095 terminate the quote. */
3096 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
3099 obstack_grow_wstr (obstack
, LCST (", "));
3101 /* Output the incomplete sequence string. */
3102 obstack_grow_wstr (obstack
, LCST ("<incomplete sequence "));
3103 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
, byte_order
,
3104 obstack
, 0, &need_escape
);
3105 obstack_grow_wstr (obstack
, LCST (">"));
3107 /* We do not attempt to output anything after this. */
3112 /* All done. If we were outputting a string of SINGLE
3113 characters, the string must be terminated. Otherwise,
3114 REPEAT and INCOMPLETE are always left properly terminated. */
3116 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
3121 /* Get the next element and state. */
3123 if (state
!= FINISH
)
3125 elem
= &chars
[idx
++];
3126 switch (elem
->result
)
3128 case wchar_iterate_ok
:
3129 case wchar_iterate_invalid
:
3130 if (elem
->repeat_count
> options
->repeat_count_threshold
)
3136 case wchar_iterate_incomplete
:
3140 case wchar_iterate_eof
:
3148 /* Print the character string STRING, printing at most LENGTH
3149 characters. LENGTH is -1 if the string is nul terminated. TYPE is
3150 the type of each character. OPTIONS holds the printing options;
3151 printing stops early if the number hits print_max; repeat counts
3152 are printed as appropriate. Print ellipses at the end if we had to
3153 stop before printing LENGTH characters, or if FORCE_ELLIPSES.
3154 QUOTE_CHAR is the character to print at each end of the string. If
3155 C_STYLE_TERMINATOR is true, and the last character is 0, then it is
3159 generic_printstr (struct ui_file
*stream
, struct type
*type
,
3160 const gdb_byte
*string
, unsigned int length
,
3161 const char *encoding
, int force_ellipses
,
3162 int quote_char
, int c_style_terminator
,
3163 const struct value_print_options
*options
)
3165 enum bfd_endian byte_order
= type_byte_order (type
);
3167 int width
= TYPE_LENGTH (type
);
3169 struct converted_character
*last
;
3173 unsigned long current_char
= 1;
3175 for (i
= 0; current_char
; ++i
)
3178 current_char
= extract_unsigned_integer (string
+ i
* width
,
3184 /* If the string was not truncated due to `set print elements', and
3185 the last byte of it is a null, we don't print that, in
3186 traditional C style. */
3187 if (c_style_terminator
3190 && (extract_unsigned_integer (string
+ (length
- 1) * width
,
3191 width
, byte_order
) == 0))
3196 fputs_filtered ("\"\"", stream
);
3200 /* Arrange to iterate over the characters, in wchar_t form. */
3201 wchar_iterator
iter (string
, length
* width
, encoding
, width
);
3202 std::vector
<converted_character
> converted_chars
;
3204 /* Convert characters until the string is over or the maximum
3205 number of printed characters has been reached. */
3207 while (i
< options
->print_max
)
3213 /* Grab the next character and repeat count. */
3214 r
= count_next_character (&iter
, &converted_chars
);
3216 /* If less than zero, the end of the input string was reached. */
3220 /* Otherwise, add the count to the total print count and get
3221 the next character. */
3225 /* Get the last element and determine if the entire string was
3227 last
= &converted_chars
.back ();
3228 finished
= (last
->result
== wchar_iterate_eof
);
3230 /* Ensure that CONVERTED_CHARS is terminated. */
3231 last
->result
= wchar_iterate_eof
;
3233 /* WCHAR_BUF is the obstack we use to represent the string in
3235 auto_obstack wchar_buf
;
3237 /* Print the output string to the obstack. */
3238 print_converted_chars_to_obstack (&wchar_buf
, converted_chars
, quote_char
,
3239 width
, byte_order
, options
);
3241 if (force_ellipses
|| !finished
)
3242 obstack_grow_wstr (&wchar_buf
, LCST ("..."));
3244 /* OUTPUT is where we collect `char's for printing. */
3245 auto_obstack output
;
3247 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
3248 (gdb_byte
*) obstack_base (&wchar_buf
),
3249 obstack_object_size (&wchar_buf
),
3250 sizeof (gdb_wchar_t
), &output
, translit_char
);
3251 obstack_1grow (&output
, '\0');
3253 fputs_filtered ((const char *) obstack_base (&output
), stream
);
3256 /* Print a string from the inferior, starting at ADDR and printing up to LEN
3257 characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing
3258 stops at the first null byte, otherwise printing proceeds (including null
3259 bytes) until either print_max or LEN characters have been printed,
3260 whichever is smaller. ENCODING is the name of the string's
3261 encoding. It can be NULL, in which case the target encoding is
3265 val_print_string (struct type
*elttype
, const char *encoding
,
3266 CORE_ADDR addr
, int len
,
3267 struct ui_file
*stream
,
3268 const struct value_print_options
*options
)
3270 int force_ellipsis
= 0; /* Force ellipsis to be printed if nonzero. */
3271 int err
; /* Non-zero if we got a bad read. */
3272 int found_nul
; /* Non-zero if we found the nul char. */
3273 unsigned int fetchlimit
; /* Maximum number of chars to print. */
3275 gdb::unique_xmalloc_ptr
<gdb_byte
> buffer
; /* Dynamically growable fetch buffer. */
3276 struct gdbarch
*gdbarch
= get_type_arch (elttype
);
3277 enum bfd_endian byte_order
= type_byte_order (elttype
);
3278 int width
= TYPE_LENGTH (elttype
);
3280 /* First we need to figure out the limit on the number of characters we are
3281 going to attempt to fetch and print. This is actually pretty simple. If
3282 LEN >= zero, then the limit is the minimum of LEN and print_max. If
3283 LEN is -1, then the limit is print_max. This is true regardless of
3284 whether print_max is zero, UINT_MAX (unlimited), or something in between,
3285 because finding the null byte (or available memory) is what actually
3286 limits the fetch. */
3288 fetchlimit
= (len
== -1 ? options
->print_max
: std::min ((unsigned) len
,
3289 options
->print_max
));
3291 err
= read_string (addr
, len
, width
, fetchlimit
, byte_order
,
3292 &buffer
, &bytes_read
);
3296 /* We now have either successfully filled the buffer to fetchlimit,
3297 or terminated early due to an error or finding a null char when
3300 /* Determine found_nul by looking at the last character read. */
3302 if (bytes_read
>= width
)
3303 found_nul
= extract_unsigned_integer (buffer
.get () + bytes_read
- width
,
3304 width
, byte_order
) == 0;
3305 if (len
== -1 && !found_nul
)
3309 /* We didn't find a NUL terminator we were looking for. Attempt
3310 to peek at the next character. If not successful, or it is not
3311 a null byte, then force ellipsis to be printed. */
3313 peekbuf
= (gdb_byte
*) alloca (width
);
3315 if (target_read_memory (addr
, peekbuf
, width
) == 0
3316 && extract_unsigned_integer (peekbuf
, width
, byte_order
) != 0)
3319 else if ((len
>= 0 && err
!= 0) || (len
> bytes_read
/ width
))
3321 /* Getting an error when we have a requested length, or fetching less
3322 than the number of characters actually requested, always make us
3327 /* If we get an error before fetching anything, don't print a string.
3328 But if we fetch something and then get an error, print the string
3329 and then the error message. */
3330 if (err
== 0 || bytes_read
> 0)
3332 LA_PRINT_STRING (stream
, elttype
, buffer
.get (), bytes_read
/ width
,
3333 encoding
, force_ellipsis
, options
);
3338 std::string str
= memory_error_message (TARGET_XFER_E_IO
, gdbarch
, addr
);
3340 fprintf_filtered (stream
, _("<error: %ps>"),
3341 styled_string (metadata_style
.style (),
3345 return (bytes_read
/ width
);
3348 /* Handle 'show print max-depth'. */
3351 show_print_max_depth (struct ui_file
*file
, int from_tty
,
3352 struct cmd_list_element
*c
, const char *value
)
3354 fprintf_filtered (file
, _("Maximum print depth is %s.\n"), value
);
3358 /* The 'set input-radix' command writes to this auxiliary variable.
3359 If the requested radix is valid, INPUT_RADIX is updated; otherwise,
3360 it is left unchanged. */
3362 static unsigned input_radix_1
= 10;
3364 /* Validate an input or output radix setting, and make sure the user
3365 knows what they really did here. Radix setting is confusing, e.g.
3366 setting the input radix to "10" never changes it! */
3369 set_input_radix (const char *args
, int from_tty
, struct cmd_list_element
*c
)
3371 set_input_radix_1 (from_tty
, input_radix_1
);
3375 set_input_radix_1 (int from_tty
, unsigned radix
)
3377 /* We don't currently disallow any input radix except 0 or 1, which don't
3378 make any mathematical sense. In theory, we can deal with any input
3379 radix greater than 1, even if we don't have unique digits for every
3380 value from 0 to radix-1, but in practice we lose on large radix values.
3381 We should either fix the lossage or restrict the radix range more.
3386 input_radix_1
= input_radix
;
3387 error (_("Nonsense input radix ``decimal %u''; input radix unchanged."),
3390 input_radix_1
= input_radix
= radix
;
3393 printf_filtered (_("Input radix now set to "
3394 "decimal %u, hex %x, octal %o.\n"),
3395 radix
, radix
, radix
);
3399 /* The 'set output-radix' command writes to this auxiliary variable.
3400 If the requested radix is valid, OUTPUT_RADIX is updated,
3401 otherwise, it is left unchanged. */
3403 static unsigned output_radix_1
= 10;
3406 set_output_radix (const char *args
, int from_tty
, struct cmd_list_element
*c
)
3408 set_output_radix_1 (from_tty
, output_radix_1
);
3412 set_output_radix_1 (int from_tty
, unsigned radix
)
3414 /* Validate the radix and disallow ones that we aren't prepared to
3415 handle correctly, leaving the radix unchanged. */
3419 user_print_options
.output_format
= 'x'; /* hex */
3422 user_print_options
.output_format
= 0; /* decimal */
3425 user_print_options
.output_format
= 'o'; /* octal */
3428 output_radix_1
= output_radix
;
3429 error (_("Unsupported output radix ``decimal %u''; "
3430 "output radix unchanged."),
3433 output_radix_1
= output_radix
= radix
;
3436 printf_filtered (_("Output radix now set to "
3437 "decimal %u, hex %x, octal %o.\n"),
3438 radix
, radix
, radix
);
3442 /* Set both the input and output radix at once. Try to set the output radix
3443 first, since it has the most restrictive range. An radix that is valid as
3444 an output radix is also valid as an input radix.
3446 It may be useful to have an unusual input radix. If the user wishes to
3447 set an input radix that is not valid as an output radix, he needs to use
3448 the 'set input-radix' command. */
3451 set_radix (const char *arg
, int from_tty
)
3455 radix
= (arg
== NULL
) ? 10 : parse_and_eval_long (arg
);
3456 set_output_radix_1 (0, radix
);
3457 set_input_radix_1 (0, radix
);
3460 printf_filtered (_("Input and output radices now set to "
3461 "decimal %u, hex %x, octal %o.\n"),
3462 radix
, radix
, radix
);
3466 /* Show both the input and output radices. */
3469 show_radix (const char *arg
, int from_tty
)
3473 if (input_radix
== output_radix
)
3475 printf_filtered (_("Input and output radices set to "
3476 "decimal %u, hex %x, octal %o.\n"),
3477 input_radix
, input_radix
, input_radix
);
3481 printf_filtered (_("Input radix set to decimal "
3482 "%u, hex %x, octal %o.\n"),
3483 input_radix
, input_radix
, input_radix
);
3484 printf_filtered (_("Output radix set to decimal "
3485 "%u, hex %x, octal %o.\n"),
3486 output_radix
, output_radix
, output_radix
);
3493 set_print (const char *arg
, int from_tty
)
3496 "\"set print\" must be followed by the name of a print subcommand.\n");
3497 help_list (setprintlist
, "set print ", all_commands
, gdb_stdout
);
3501 show_print (const char *args
, int from_tty
)
3503 cmd_show_list (showprintlist
, from_tty
, "");
3507 set_print_raw (const char *arg
, int from_tty
)
3510 "\"set print raw\" must be followed by the name of a \"print raw\" subcommand.\n");
3511 help_list (setprintrawlist
, "set print raw ", all_commands
, gdb_stdout
);
3515 show_print_raw (const char *args
, int from_tty
)
3517 cmd_show_list (showprintrawlist
, from_tty
, "");
3520 /* Controls printing of vtbl's. */
3522 show_vtblprint (struct ui_file
*file
, int from_tty
,
3523 struct cmd_list_element
*c
, const char *value
)
3525 fprintf_filtered (file
, _("\
3526 Printing of C++ virtual function tables is %s.\n"),
3530 /* Controls looking up an object's derived type using what we find in
3533 show_objectprint (struct ui_file
*file
, int from_tty
,
3534 struct cmd_list_element
*c
,
3537 fprintf_filtered (file
, _("\
3538 Printing of object's derived type based on vtable info is %s.\n"),
3543 show_static_field_print (struct ui_file
*file
, int from_tty
,
3544 struct cmd_list_element
*c
,
3547 fprintf_filtered (file
,
3548 _("Printing of C++ static members is %s.\n"),
3554 /* A couple typedefs to make writing the options a bit more
3556 using boolean_option_def
3557 = gdb::option::boolean_option_def
<value_print_options
>;
3558 using uinteger_option_def
3559 = gdb::option::uinteger_option_def
<value_print_options
>;
3560 using zuinteger_unlimited_option_def
3561 = gdb::option::zuinteger_unlimited_option_def
<value_print_options
>;
3563 /* Definitions of options for the "print" and "compile print"
3565 static const gdb::option::option_def value_print_option_defs
[] = {
3567 boolean_option_def
{
3569 [] (value_print_options
*opt
) { return &opt
->addressprint
; },
3570 show_addressprint
, /* show_cmd_cb */
3571 N_("Set printing of addresses."),
3572 N_("Show printing of addresses."),
3573 NULL
, /* help_doc */
3576 boolean_option_def
{
3578 [] (value_print_options
*opt
) { return &opt
->prettyformat_arrays
; },
3579 show_prettyformat_arrays
, /* show_cmd_cb */
3580 N_("Set pretty formatting of arrays."),
3581 N_("Show pretty formatting of arrays."),
3582 NULL
, /* help_doc */
3585 boolean_option_def
{
3587 [] (value_print_options
*opt
) { return &opt
->print_array_indexes
; },
3588 show_print_array_indexes
, /* show_cmd_cb */
3589 N_("Set printing of array indexes."),
3590 N_("Show printing of array indexes."),
3591 NULL
, /* help_doc */
3594 uinteger_option_def
{
3596 [] (value_print_options
*opt
) { return &opt
->print_max
; },
3597 show_print_max
, /* show_cmd_cb */
3598 N_("Set limit on string chars or array elements to print."),
3599 N_("Show limit on string chars or array elements to print."),
3600 N_("\"unlimited\" causes there to be no limit."),
3603 zuinteger_unlimited_option_def
{
3605 [] (value_print_options
*opt
) { return &opt
->max_depth
; },
3606 show_print_max_depth
, /* show_cmd_cb */
3607 N_("Set maximum print depth for nested structures, unions and arrays."),
3608 N_("Show maximum print depth for nested structures, unions, and arrays."),
3609 N_("When structures, unions, or arrays are nested beyond this depth then they\n\
3610 will be replaced with either '{...}' or '(...)' depending on the language.\n\
3611 Use \"unlimited\" to print the complete structure.")
3614 boolean_option_def
{
3616 [] (value_print_options
*opt
) { return &opt
->stop_print_at_null
; },
3617 show_stop_print_at_null
, /* show_cmd_cb */
3618 N_("Set printing of char arrays to stop at first null char."),
3619 N_("Show printing of char arrays to stop at first null char."),
3620 NULL
, /* help_doc */
3623 boolean_option_def
{
3625 [] (value_print_options
*opt
) { return &opt
->objectprint
; },
3626 show_objectprint
, /* show_cmd_cb */
3627 _("Set printing of C++ virtual function tables."),
3628 _("Show printing of C++ virtual function tables."),
3629 NULL
, /* help_doc */
3632 boolean_option_def
{
3634 [] (value_print_options
*opt
) { return &opt
->prettyformat_structs
; },
3635 show_prettyformat_structs
, /* show_cmd_cb */
3636 N_("Set pretty formatting of structures."),
3637 N_("Show pretty formatting of structures."),
3638 NULL
, /* help_doc */
3641 boolean_option_def
{
3643 [] (value_print_options
*opt
) { return &opt
->raw
; },
3644 NULL
, /* show_cmd_cb */
3645 N_("Set whether to print values in raw form."),
3646 N_("Show whether to print values in raw form."),
3647 N_("If set, values are printed in raw form, bypassing any\n\
3648 pretty-printers for that value.")
3651 uinteger_option_def
{
3653 [] (value_print_options
*opt
) { return &opt
->repeat_count_threshold
; },
3654 show_repeat_count_threshold
, /* show_cmd_cb */
3655 N_("Set threshold for repeated print elements."),
3656 N_("Show threshold for repeated print elements."),
3657 N_("\"unlimited\" causes all elements to be individually printed."),
3660 boolean_option_def
{
3662 [] (value_print_options
*opt
) { return &opt
->static_field_print
; },
3663 show_static_field_print
, /* show_cmd_cb */
3664 N_("Set printing of C++ static members."),
3665 N_("Show printing of C++ static members."),
3666 NULL
, /* help_doc */
3669 boolean_option_def
{
3671 [] (value_print_options
*opt
) { return &opt
->symbol_print
; },
3672 show_symbol_print
, /* show_cmd_cb */
3673 N_("Set printing of symbol names when printing pointers."),
3674 N_("Show printing of symbol names when printing pointers."),
3675 NULL
, /* help_doc */
3678 boolean_option_def
{
3680 [] (value_print_options
*opt
) { return &opt
->unionprint
; },
3681 show_unionprint
, /* show_cmd_cb */
3682 N_("Set printing of unions interior to structures."),
3683 N_("Show printing of unions interior to structures."),
3684 NULL
, /* help_doc */
3687 boolean_option_def
{
3689 [] (value_print_options
*opt
) { return &opt
->vtblprint
; },
3690 show_vtblprint
, /* show_cmd_cb */
3691 N_("Set printing of C++ virtual function tables."),
3692 N_("Show printing of C++ virtual function tables."),
3693 NULL
, /* help_doc */
3697 /* See valprint.h. */
3699 gdb::option::option_def_group
3700 make_value_print_options_def_group (value_print_options
*opts
)
3702 return {{value_print_option_defs
}, opts
};
3705 void _initialize_valprint ();
3707 _initialize_valprint ()
3709 cmd_list_element
*cmd
;
3711 add_prefix_cmd ("print", no_class
, set_print
,
3712 _("Generic command for setting how things print."),
3713 &setprintlist
, "set print ", 0, &setlist
);
3714 add_alias_cmd ("p", "print", no_class
, 1, &setlist
);
3715 /* Prefer set print to set prompt. */
3716 add_alias_cmd ("pr", "print", no_class
, 1, &setlist
);
3718 add_prefix_cmd ("print", no_class
, show_print
,
3719 _("Generic command for showing print settings."),
3720 &showprintlist
, "show print ", 0, &showlist
);
3721 add_alias_cmd ("p", "print", no_class
, 1, &showlist
);
3722 add_alias_cmd ("pr", "print", no_class
, 1, &showlist
);
3724 cmd
= add_prefix_cmd ("raw", no_class
, set_print_raw
,
3726 Generic command for setting what things to print in \"raw\" mode."),
3727 &setprintrawlist
, "set print raw ", 0,
3729 deprecate_cmd (cmd
, nullptr);
3731 cmd
= add_prefix_cmd ("raw", no_class
, show_print_raw
,
3732 _("Generic command for showing \"print raw\" settings."),
3733 &showprintrawlist
, "show print raw ", 0,
3735 deprecate_cmd (cmd
, nullptr);
3737 gdb::option::add_setshow_cmds_for_options
3738 (class_support
, &user_print_options
, value_print_option_defs
,
3739 &setprintlist
, &showprintlist
);
3741 add_setshow_zuinteger_cmd ("input-radix", class_support
, &input_radix_1
,
3743 Set default input radix for entering numbers."), _("\
3744 Show default input radix for entering numbers."), NULL
,
3747 &setlist
, &showlist
);
3749 add_setshow_zuinteger_cmd ("output-radix", class_support
, &output_radix_1
,
3751 Set default output radix for printing of values."), _("\
3752 Show default output radix for printing of values."), NULL
,
3755 &setlist
, &showlist
);
3757 /* The "set radix" and "show radix" commands are special in that
3758 they are like normal set and show commands but allow two normally
3759 independent variables to be either set or shown with a single
3760 command. So the usual deprecated_add_set_cmd() and [deleted]
3761 add_show_from_set() commands aren't really appropriate. */
3762 /* FIXME: i18n: With the new add_setshow_integer command, that is no
3763 longer true - show can display anything. */
3764 add_cmd ("radix", class_support
, set_radix
, _("\
3765 Set default input and output number radices.\n\
3766 Use 'set input-radix' or 'set output-radix' to independently set each.\n\
3767 Without an argument, sets both radices back to the default value of 10."),
3769 add_cmd ("radix", class_support
, show_radix
, _("\
3770 Show the default input and output number radices.\n\
3771 Use 'show input-radix' or 'show output-radix' to independently show each."),