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_val_print helper for TYPE_CODE_INT. */
795 generic_val_print_int (struct type
*type
,
796 int embedded_offset
, struct ui_file
*stream
,
797 struct value
*original_value
,
798 const struct value_print_options
*options
)
800 struct value_print_options opts
= *options
;
802 opts
.format
= (options
->format
? options
->format
803 : options
->output_format
);
804 val_print_scalar_formatted (type
, embedded_offset
,
805 original_value
, &opts
, 0, stream
);
808 /* generic_val_print helper for TYPE_CODE_CHAR. */
811 generic_val_print_char (struct type
*type
, struct type
*unresolved_type
,
813 struct ui_file
*stream
,
814 struct value
*original_value
,
815 const struct value_print_options
*options
)
818 struct gdbarch
*gdbarch
= get_type_arch (type
);
819 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
821 if (options
->format
|| options
->output_format
)
823 struct value_print_options opts
= *options
;
825 opts
.format
= (options
->format
? options
->format
826 : options
->output_format
);
827 val_print_scalar_formatted (type
, embedded_offset
,
828 original_value
, &opts
, 0, stream
);
832 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
834 val
= unpack_long (type
, valaddr
+ embedded_offset
* unit_size
);
835 if (TYPE_UNSIGNED (type
))
836 fprintf_filtered (stream
, "%u", (unsigned int) val
);
838 fprintf_filtered (stream
, "%d", (int) val
);
839 fputs_filtered (" ", stream
);
840 LA_PRINT_CHAR (val
, unresolved_type
, stream
);
844 /* generic_val_print helper for TYPE_CODE_FLT and TYPE_CODE_DECFLOAT. */
847 generic_val_print_float (struct type
*type
,
848 int embedded_offset
, struct ui_file
*stream
,
849 struct value
*original_value
,
850 const struct value_print_options
*options
)
852 struct gdbarch
*gdbarch
= get_type_arch (type
);
853 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
857 val_print_scalar_formatted (type
, embedded_offset
,
858 original_value
, options
, 0, stream
);
862 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
864 print_floating (valaddr
+ embedded_offset
* unit_size
, type
, stream
);
868 /* generic_val_print helper for TYPE_CODE_COMPLEX. */
871 generic_val_print_complex (struct type
*type
,
872 int embedded_offset
, struct ui_file
*stream
,
873 struct value
*original_value
,
874 const struct value_print_options
*options
,
875 const struct generic_val_print_decorations
878 struct gdbarch
*gdbarch
= get_type_arch (type
);
879 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
880 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
882 fprintf_filtered (stream
, "%s", decorations
->complex_prefix
);
884 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
),
885 embedded_offset
, original_value
, options
, 0,
888 print_floating (valaddr
+ embedded_offset
* unit_size
,
889 TYPE_TARGET_TYPE (type
), stream
);
890 fprintf_filtered (stream
, "%s", decorations
->complex_infix
);
892 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
),
894 + type_length_units (TYPE_TARGET_TYPE (type
)),
895 original_value
, options
, 0, stream
);
897 print_floating (valaddr
+ embedded_offset
* unit_size
898 + TYPE_LENGTH (TYPE_TARGET_TYPE (type
)),
899 TYPE_TARGET_TYPE (type
), stream
);
900 fprintf_filtered (stream
, "%s", decorations
->complex_suffix
);
903 /* A generic val_print that is suitable for use by language
904 implementations of the la_val_print method. This function can
905 handle most type codes, though not all, notably exception
906 TYPE_CODE_UNION and TYPE_CODE_STRUCT, which must be implemented by
909 Most arguments are as to val_print.
911 The additional DECORATIONS argument can be used to customize the
912 output in some small, language-specific ways. */
915 generic_val_print (struct type
*type
,
916 int embedded_offset
, CORE_ADDR address
,
917 struct ui_file
*stream
, int recurse
,
918 struct value
*original_value
,
919 const struct value_print_options
*options
,
920 const struct generic_val_print_decorations
*decorations
)
922 struct type
*unresolved_type
= type
;
924 type
= check_typedef (type
);
925 switch (TYPE_CODE (type
))
927 case TYPE_CODE_ARRAY
:
928 generic_val_print_array (type
, embedded_offset
, address
, stream
,
929 recurse
, original_value
, options
, decorations
);
932 case TYPE_CODE_MEMBERPTR
:
933 generic_val_print_memberptr (type
, embedded_offset
, stream
,
934 original_value
, options
);
938 generic_val_print_ptr (type
, embedded_offset
, stream
,
939 original_value
, options
);
943 case TYPE_CODE_RVALUE_REF
:
944 generic_val_print_ref (type
, embedded_offset
, stream
, recurse
,
945 original_value
, options
);
950 val_print_scalar_formatted (type
, embedded_offset
,
951 original_value
, options
, 0, stream
);
953 generic_val_print_enum (type
, embedded_offset
, stream
,
954 original_value
, options
);
957 case TYPE_CODE_FLAGS
:
959 val_print_scalar_formatted (type
, embedded_offset
,
960 original_value
, options
, 0, stream
);
962 val_print_type_code_flags (type
, original_value
, embedded_offset
,
967 case TYPE_CODE_METHOD
:
969 val_print_scalar_formatted (type
, embedded_offset
,
970 original_value
, options
, 0, stream
);
972 generic_val_print_func (type
, embedded_offset
, address
, stream
,
973 original_value
, options
);
977 generic_val_print_bool (type
, embedded_offset
, stream
,
978 original_value
, options
, decorations
);
981 case TYPE_CODE_RANGE
:
982 /* FIXME: create_static_range_type does not set the unsigned bit in a
983 range type (I think it probably should copy it from the
984 target type), so we won't print values which are too large to
985 fit in a signed integer correctly. */
986 /* FIXME: Doesn't handle ranges of enums correctly. (Can't just
987 print with the target type, though, because the size of our
988 type and the target type might differ). */
993 generic_val_print_int (type
, embedded_offset
, stream
,
994 original_value
, options
);
998 generic_val_print_char (type
, unresolved_type
, embedded_offset
,
999 stream
, original_value
, options
);
1003 case TYPE_CODE_DECFLOAT
:
1004 generic_val_print_float (type
, embedded_offset
, stream
,
1005 original_value
, options
);
1008 case TYPE_CODE_VOID
:
1009 fputs_filtered (decorations
->void_name
, stream
);
1012 case TYPE_CODE_ERROR
:
1013 fprintf_filtered (stream
, "%s", TYPE_ERROR_NAME (type
));
1016 case TYPE_CODE_UNDEF
:
1017 /* This happens (without TYPE_STUB set) on systems which don't use
1018 dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
1019 and no complete type for struct foo in that file. */
1020 fprintf_styled (stream
, metadata_style
.style (), _("<incomplete type>"));
1023 case TYPE_CODE_COMPLEX
:
1024 generic_val_print_complex (type
, embedded_offset
, stream
,
1025 original_value
, options
, decorations
);
1028 case TYPE_CODE_UNION
:
1029 case TYPE_CODE_STRUCT
:
1030 case TYPE_CODE_METHODPTR
:
1032 error (_("Unhandled type code %d in symbol table."),
1037 /* See valprint.h. */
1040 generic_value_print (struct value
*val
, struct ui_file
*stream
, int recurse
,
1041 const struct value_print_options
*options
,
1042 const struct generic_val_print_decorations
*decorations
)
1044 struct type
*type
= value_type (val
);
1045 struct type
*unresolved_type
= type
;
1047 type
= check_typedef (type
);
1048 switch (TYPE_CODE (type
))
1050 case TYPE_CODE_ARRAY
:
1051 generic_val_print_array (type
, 0, value_address (val
), stream
,
1052 recurse
, val
, options
, decorations
);
1055 case TYPE_CODE_MEMBERPTR
:
1056 value_print_scalar_formatted (val
, options
, 0, stream
);
1060 generic_value_print_ptr (val
, stream
, options
);
1064 case TYPE_CODE_RVALUE_REF
:
1065 generic_val_print_ref (type
, 0, stream
, recurse
,
1069 case TYPE_CODE_ENUM
:
1070 if (options
->format
)
1071 value_print_scalar_formatted (val
, options
, 0, stream
);
1073 generic_val_print_enum (type
, 0, stream
, val
, options
);
1076 case TYPE_CODE_FLAGS
:
1077 if (options
->format
)
1078 value_print_scalar_formatted (val
, options
, 0, stream
);
1080 val_print_type_code_flags (type
, val
, 0, stream
);
1083 case TYPE_CODE_FUNC
:
1084 case TYPE_CODE_METHOD
:
1085 if (options
->format
)
1086 value_print_scalar_formatted (val
, options
, 0, stream
);
1088 generic_val_print_func (type
, 0, value_address (val
), stream
,
1092 case TYPE_CODE_BOOL
:
1093 generic_val_print_bool (type
, 0, stream
,
1094 val
, options
, decorations
);
1097 case TYPE_CODE_RANGE
:
1098 /* FIXME: create_static_range_type does not set the unsigned bit in a
1099 range type (I think it probably should copy it from the
1100 target type), so we won't print values which are too large to
1101 fit in a signed integer correctly. */
1102 /* FIXME: Doesn't handle ranges of enums correctly. (Can't just
1103 print with the target type, though, because the size of our
1104 type and the target type might differ). */
1109 generic_val_print_int (type
, 0, stream
,
1113 case TYPE_CODE_CHAR
:
1114 generic_val_print_char (type
, unresolved_type
, 0,
1115 stream
, val
, options
);
1119 case TYPE_CODE_DECFLOAT
:
1120 generic_val_print_float (type
, 0, stream
,
1124 case TYPE_CODE_VOID
:
1125 fputs_filtered (decorations
->void_name
, stream
);
1128 case TYPE_CODE_ERROR
:
1129 fprintf_filtered (stream
, "%s", TYPE_ERROR_NAME (type
));
1132 case TYPE_CODE_UNDEF
:
1133 /* This happens (without TYPE_STUB set) on systems which don't use
1134 dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
1135 and no complete type for struct foo in that file. */
1136 fprintf_styled (stream
, metadata_style
.style (), _("<incomplete type>"));
1139 case TYPE_CODE_COMPLEX
:
1140 generic_val_print_complex (type
, 0, stream
,
1141 val
, options
, decorations
);
1144 case TYPE_CODE_UNION
:
1145 case TYPE_CODE_STRUCT
:
1146 case TYPE_CODE_METHODPTR
:
1148 error (_("Unhandled type code %d in symbol table."),
1153 /* Helper function for val_print and common_val_print that does the
1154 work. Arguments are as to val_print, but FULL_VALUE, if given, is
1155 the value to be printed. */
1158 do_val_print (struct value
*full_value
,
1159 struct type
*type
, LONGEST embedded_offset
,
1160 CORE_ADDR address
, struct ui_file
*stream
, int recurse
,
1162 const struct value_print_options
*options
,
1163 const struct language_defn
*language
)
1166 struct value_print_options local_opts
= *options
;
1167 struct type
*real_type
= check_typedef (type
);
1169 if (local_opts
.prettyformat
== Val_prettyformat_default
)
1170 local_opts
.prettyformat
= (local_opts
.prettyformat_structs
1171 ? Val_prettyformat
: Val_no_prettyformat
);
1175 /* Ensure that the type is complete and not just a stub. If the type is
1176 only a stub and we can't find and substitute its complete type, then
1177 print appropriate string and return. */
1179 if (TYPE_STUB (real_type
))
1181 fprintf_styled (stream
, metadata_style
.style (), _("<incomplete type>"));
1185 if (!valprint_check_validity (stream
, real_type
, embedded_offset
, val
))
1190 ret
= apply_ext_lang_val_pretty_printer (type
, embedded_offset
,
1191 address
, stream
, recurse
,
1192 val
, options
, language
);
1197 /* Handle summary mode. If the value is a scalar, print it;
1198 otherwise, print an ellipsis. */
1199 if (options
->summary
&& !val_print_scalar_type_p (type
))
1201 fprintf_filtered (stream
, "...");
1205 /* If this value is too deep then don't print it. */
1206 if (!val_print_scalar_or_string_type_p (type
, language
)
1207 && val_print_check_max_depth (stream
, recurse
, options
, language
))
1212 if (full_value
!= nullptr && language
->la_value_print_inner
!= nullptr)
1213 language
->la_value_print_inner (full_value
, stream
, recurse
,
1216 language
->la_val_print (type
, embedded_offset
, address
,
1217 stream
, recurse
, val
,
1220 catch (const gdb_exception_error
&except
)
1222 fprintf_styled (stream
, metadata_style
.style (),
1223 _("<error reading variable>"));
1227 /* Print using the given LANGUAGE the data of type TYPE located at
1228 VAL's contents buffer + EMBEDDED_OFFSET (within GDB), which came
1229 from the inferior at address ADDRESS + EMBEDDED_OFFSET, onto
1230 stdio stream STREAM according to OPTIONS. VAL is the whole object
1231 that came from ADDRESS.
1233 The language printers will pass down an adjusted EMBEDDED_OFFSET to
1234 further helper subroutines as subfields of TYPE are printed. In
1235 such cases, VAL is passed down unadjusted, so
1236 that VAL can be queried for metadata about the contents data being
1237 printed, using EMBEDDED_OFFSET as an offset into VAL's contents
1238 buffer. For example: "has this field been optimized out", or "I'm
1239 printing an object while inspecting a traceframe; has this
1240 particular piece of data been collected?".
1242 RECURSE indicates the amount of indentation to supply before
1243 continuation lines; this amount is roughly twice the value of
1247 val_print (struct type
*type
, LONGEST embedded_offset
,
1248 CORE_ADDR address
, struct ui_file
*stream
, int recurse
,
1250 const struct value_print_options
*options
,
1251 const struct language_defn
*language
)
1253 do_val_print (nullptr, type
, embedded_offset
, address
, stream
,
1254 recurse
, val
, options
, language
);
1257 /* See valprint.h. */
1260 val_print_check_max_depth (struct ui_file
*stream
, int recurse
,
1261 const struct value_print_options
*options
,
1262 const struct language_defn
*language
)
1264 if (options
->max_depth
> -1 && recurse
>= options
->max_depth
)
1266 gdb_assert (language
->la_struct_too_deep_ellipsis
!= NULL
);
1267 fputs_filtered (language
->la_struct_too_deep_ellipsis
, stream
);
1274 /* Check whether the value VAL is printable. Return 1 if it is;
1275 return 0 and print an appropriate error message to STREAM according to
1276 OPTIONS if it is not. */
1279 value_check_printable (struct value
*val
, struct ui_file
*stream
,
1280 const struct value_print_options
*options
)
1284 fprintf_styled (stream
, metadata_style
.style (),
1285 _("<address of value unknown>"));
1289 if (value_entirely_optimized_out (val
))
1291 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1292 fprintf_filtered (stream
, "...");
1294 val_print_optimized_out (val
, stream
);
1298 if (value_entirely_unavailable (val
))
1300 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1301 fprintf_filtered (stream
, "...");
1303 val_print_unavailable (stream
);
1307 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_INTERNAL_FUNCTION
)
1309 fprintf_styled (stream
, metadata_style
.style (),
1310 _("<internal function %s>"),
1311 value_internal_function_name (val
));
1315 if (type_not_associated (value_type (val
)))
1317 val_print_not_associated (stream
);
1321 if (type_not_allocated (value_type (val
)))
1323 val_print_not_allocated (stream
);
1330 /* Print using the given LANGUAGE the value VAL onto stream STREAM according
1333 This is a preferable interface to val_print, above, because it uses
1334 GDB's value mechanism. */
1337 common_val_print (struct value
*val
, struct ui_file
*stream
, int recurse
,
1338 const struct value_print_options
*options
,
1339 const struct language_defn
*language
)
1341 if (!value_check_printable (val
, stream
, options
))
1344 if (language
->la_language
== language_ada
)
1345 /* The value might have a dynamic type, which would cause trouble
1346 below when trying to extract the value contents (since the value
1347 size is determined from the type size which is unknown). So
1348 get a fixed representation of our value. */
1349 val
= ada_to_fixed_value (val
);
1351 if (value_lazy (val
))
1352 value_fetch_lazy (val
);
1354 do_val_print (val
, value_type (val
),
1355 value_embedded_offset (val
), value_address (val
),
1357 val
, options
, language
);
1360 /* See valprint.h. */
1363 common_val_print_checked (struct value
*val
, struct ui_file
*stream
,
1365 const struct value_print_options
*options
,
1366 const struct language_defn
*language
)
1368 if (!value_check_printable (val
, stream
, options
))
1370 common_val_print (val
, stream
, recurse
, options
, language
);
1373 /* Print on stream STREAM the value VAL according to OPTIONS. The value
1374 is printed using the current_language syntax. */
1377 value_print (struct value
*val
, struct ui_file
*stream
,
1378 const struct value_print_options
*options
)
1380 scoped_value_mark free_values
;
1382 if (!value_check_printable (val
, stream
, options
))
1388 = apply_ext_lang_val_pretty_printer (value_type (val
),
1389 value_embedded_offset (val
),
1390 value_address (val
),
1392 val
, options
, current_language
);
1398 LA_VALUE_PRINT (val
, stream
, options
);
1402 val_print_type_code_flags (struct type
*type
, struct value
*original_value
,
1403 int embedded_offset
, struct ui_file
*stream
)
1405 const gdb_byte
*valaddr
= (value_contents_for_printing (original_value
)
1407 ULONGEST val
= unpack_long (type
, valaddr
);
1408 int field
, nfields
= TYPE_NFIELDS (type
);
1409 struct gdbarch
*gdbarch
= get_type_arch (type
);
1410 struct type
*bool_type
= builtin_type (gdbarch
)->builtin_bool
;
1412 fputs_filtered ("[", stream
);
1413 for (field
= 0; field
< nfields
; field
++)
1415 if (TYPE_FIELD_NAME (type
, field
)[0] != '\0')
1417 struct type
*field_type
= TYPE_FIELD_TYPE (type
, field
);
1419 if (field_type
== bool_type
1420 /* We require boolean types here to be one bit wide. This is a
1421 problematic place to notify the user of an internal error
1422 though. Instead just fall through and print the field as an
1424 && TYPE_FIELD_BITSIZE (type
, field
) == 1)
1426 if (val
& ((ULONGEST
)1 << TYPE_FIELD_BITPOS (type
, field
)))
1429 styled_string (variable_name_style
.style (),
1430 TYPE_FIELD_NAME (type
, field
)));
1434 unsigned field_len
= TYPE_FIELD_BITSIZE (type
, field
);
1436 = val
>> (TYPE_FIELD_BITPOS (type
, field
) - field_len
+ 1);
1438 if (field_len
< sizeof (ULONGEST
) * TARGET_CHAR_BIT
)
1439 field_val
&= ((ULONGEST
) 1 << field_len
) - 1;
1440 fprintf_filtered (stream
, " %ps=",
1441 styled_string (variable_name_style
.style (),
1442 TYPE_FIELD_NAME (type
, field
)));
1443 if (TYPE_CODE (field_type
) == TYPE_CODE_ENUM
)
1444 generic_val_print_enum_1 (field_type
, field_val
, stream
);
1446 print_longest (stream
, 'd', 0, field_val
);
1450 fputs_filtered (" ]", stream
);
1453 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
1454 according to OPTIONS and SIZE on STREAM. Format i is not supported
1457 This is how the elements of an array or structure are printed
1461 val_print_scalar_formatted (struct type
*type
,
1462 LONGEST embedded_offset
,
1464 const struct value_print_options
*options
,
1466 struct ui_file
*stream
)
1468 struct gdbarch
*arch
= get_type_arch (type
);
1469 int unit_size
= gdbarch_addressable_memory_unit_size (arch
);
1471 gdb_assert (val
!= NULL
);
1473 /* If we get here with a string format, try again without it. Go
1474 all the way back to the language printers, which may call us
1476 if (options
->format
== 's')
1478 struct value_print_options opts
= *options
;
1481 val_print (type
, embedded_offset
, 0, stream
, 0, val
, &opts
,
1486 /* value_contents_for_printing fetches all VAL's contents. They are
1487 needed to check whether VAL is optimized-out or unavailable
1489 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
1491 /* A scalar object that does not have all bits available can't be
1492 printed, because all bits contribute to its representation. */
1493 if (value_bits_any_optimized_out (val
,
1494 TARGET_CHAR_BIT
* embedded_offset
,
1495 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
1496 val_print_optimized_out (val
, stream
);
1497 else if (!value_bytes_available (val
, embedded_offset
, TYPE_LENGTH (type
)))
1498 val_print_unavailable (stream
);
1500 print_scalar_formatted (valaddr
+ embedded_offset
* unit_size
, type
,
1501 options
, size
, stream
);
1504 /* See valprint.h. */
1507 value_print_scalar_formatted (struct value
*val
,
1508 const struct value_print_options
*options
,
1510 struct ui_file
*stream
)
1512 struct type
*type
= check_typedef (value_type (val
));
1514 gdb_assert (val
!= NULL
);
1516 /* If we get here with a string format, try again without it. Go
1517 all the way back to the language printers, which may call us
1519 if (options
->format
== 's')
1521 struct value_print_options opts
= *options
;
1524 common_val_print (val
, stream
, 0, &opts
, current_language
);
1528 /* value_contents_for_printing fetches all VAL's contents. They are
1529 needed to check whether VAL is optimized-out or unavailable
1531 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
1533 /* A scalar object that does not have all bits available can't be
1534 printed, because all bits contribute to its representation. */
1535 if (value_bits_any_optimized_out (val
, 0,
1536 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
1537 val_print_optimized_out (val
, stream
);
1538 else if (!value_bytes_available (val
, 0, TYPE_LENGTH (type
)))
1539 val_print_unavailable (stream
);
1541 print_scalar_formatted (valaddr
, type
, options
, size
, stream
);
1544 /* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g.
1545 The raison d'etre of this function is to consolidate printing of
1546 LONG_LONG's into this one function. The format chars b,h,w,g are
1547 from print_scalar_formatted(). Numbers are printed using C
1550 USE_C_FORMAT means to use C format in all cases. Without it,
1551 'o' and 'x' format do not include the standard C radix prefix
1554 Hilfinger/2004-09-09: USE_C_FORMAT was originally called USE_LOCAL
1555 and was intended to request formatting according to the current
1556 language and would be used for most integers that GDB prints. The
1557 exceptional cases were things like protocols where the format of
1558 the integer is a protocol thing, not a user-visible thing). The
1559 parameter remains to preserve the information of what things might
1560 be printed with language-specific format, should we ever resurrect
1564 print_longest (struct ui_file
*stream
, int format
, int use_c_format
,
1572 val
= int_string (val_long
, 10, 1, 0, 1); break;
1574 val
= int_string (val_long
, 10, 0, 0, 1); break;
1576 val
= int_string (val_long
, 16, 0, 0, use_c_format
); break;
1578 val
= int_string (val_long
, 16, 0, 2, 1); break;
1580 val
= int_string (val_long
, 16, 0, 4, 1); break;
1582 val
= int_string (val_long
, 16, 0, 8, 1); break;
1584 val
= int_string (val_long
, 16, 0, 16, 1); break;
1587 val
= int_string (val_long
, 8, 0, 0, use_c_format
); break;
1589 internal_error (__FILE__
, __LINE__
,
1590 _("failed internal consistency check"));
1592 fputs_filtered (val
, stream
);
1595 /* This used to be a macro, but I don't think it is called often enough
1596 to merit such treatment. */
1597 /* Convert a LONGEST to an int. This is used in contexts (e.g. number of
1598 arguments to a function, number in a value history, register number, etc.)
1599 where the value must not be larger than can fit in an int. */
1602 longest_to_int (LONGEST arg
)
1604 /* Let the compiler do the work. */
1605 int rtnval
= (int) arg
;
1607 /* Check for overflows or underflows. */
1608 if (sizeof (LONGEST
) > sizeof (int))
1612 error (_("Value out of range."));
1618 /* Print a floating point value of floating-point type TYPE,
1619 pointed to in GDB by VALADDR, on STREAM. */
1622 print_floating (const gdb_byte
*valaddr
, struct type
*type
,
1623 struct ui_file
*stream
)
1625 std::string str
= target_float_to_string (valaddr
, type
);
1626 fputs_filtered (str
.c_str (), stream
);
1630 print_binary_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1631 unsigned len
, enum bfd_endian byte_order
, bool zero_pad
)
1636 bool seen_a_one
= false;
1638 /* Declared "int" so it will be signed.
1639 This ensures that right shift will shift in zeros. */
1641 const int mask
= 0x080;
1643 if (byte_order
== BFD_ENDIAN_BIG
)
1649 /* Every byte has 8 binary characters; peel off
1650 and print from the MSB end. */
1652 for (i
= 0; i
< (HOST_CHAR_BIT
* sizeof (*p
)); i
++)
1654 if (*p
& (mask
>> i
))
1659 if (zero_pad
|| seen_a_one
|| b
== '1')
1660 fputc_filtered (b
, stream
);
1668 for (p
= valaddr
+ len
- 1;
1672 for (i
= 0; i
< (HOST_CHAR_BIT
* sizeof (*p
)); i
++)
1674 if (*p
& (mask
>> i
))
1679 if (zero_pad
|| seen_a_one
|| b
== '1')
1680 fputc_filtered (b
, stream
);
1687 /* When not zero-padding, ensure that something is printed when the
1689 if (!zero_pad
&& !seen_a_one
)
1690 fputc_filtered ('0', stream
);
1693 /* A helper for print_octal_chars that emits a single octal digit,
1694 optionally suppressing it if is zero and updating SEEN_A_ONE. */
1697 emit_octal_digit (struct ui_file
*stream
, bool *seen_a_one
, int digit
)
1699 if (*seen_a_one
|| digit
!= 0)
1700 fprintf_filtered (stream
, "%o", digit
);
1705 /* VALADDR points to an integer of LEN bytes.
1706 Print it in octal on stream or format it in buf. */
1709 print_octal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1710 unsigned len
, enum bfd_endian byte_order
)
1713 unsigned char octa1
, octa2
, octa3
, carry
;
1716 /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track
1717 * the extra bits, which cycle every three bytes:
1719 * Byte side: 0 1 2 3
1721 * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 |
1723 * Octal side: 0 1 carry 3 4 carry ...
1725 * Cycle number: 0 1 2
1727 * But of course we are printing from the high side, so we have to
1728 * figure out where in the cycle we are so that we end up with no
1729 * left over bits at the end.
1731 #define BITS_IN_OCTAL 3
1732 #define HIGH_ZERO 0340
1733 #define LOW_ZERO 0034
1734 #define CARRY_ZERO 0003
1735 static_assert (HIGH_ZERO
+ LOW_ZERO
+ CARRY_ZERO
== 0xff,
1736 "cycle zero constants are wrong");
1737 #define HIGH_ONE 0200
1738 #define MID_ONE 0160
1739 #define LOW_ONE 0016
1740 #define CARRY_ONE 0001
1741 static_assert (HIGH_ONE
+ MID_ONE
+ LOW_ONE
+ CARRY_ONE
== 0xff,
1742 "cycle one constants are wrong");
1743 #define HIGH_TWO 0300
1744 #define MID_TWO 0070
1745 #define LOW_TWO 0007
1746 static_assert (HIGH_TWO
+ MID_TWO
+ LOW_TWO
== 0xff,
1747 "cycle two constants are wrong");
1749 /* For 32 we start in cycle 2, with two bits and one bit carry;
1750 for 64 in cycle in cycle 1, with one bit and a two bit carry. */
1752 cycle
= (len
* HOST_CHAR_BIT
) % BITS_IN_OCTAL
;
1755 fputs_filtered ("0", stream
);
1756 bool seen_a_one
= false;
1757 if (byte_order
== BFD_ENDIAN_BIG
)
1766 /* No carry in, carry out two bits. */
1768 octa1
= (HIGH_ZERO
& *p
) >> 5;
1769 octa2
= (LOW_ZERO
& *p
) >> 2;
1770 carry
= (CARRY_ZERO
& *p
);
1771 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1772 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1776 /* Carry in two bits, carry out one bit. */
1778 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1779 octa2
= (MID_ONE
& *p
) >> 4;
1780 octa3
= (LOW_ONE
& *p
) >> 1;
1781 carry
= (CARRY_ONE
& *p
);
1782 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1783 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1784 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1788 /* Carry in one bit, no carry out. */
1790 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1791 octa2
= (MID_TWO
& *p
) >> 3;
1792 octa3
= (LOW_TWO
& *p
);
1794 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1795 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1796 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1800 error (_("Internal error in octal conversion;"));
1804 cycle
= cycle
% BITS_IN_OCTAL
;
1809 for (p
= valaddr
+ len
- 1;
1816 /* Carry out, no carry in */
1818 octa1
= (HIGH_ZERO
& *p
) >> 5;
1819 octa2
= (LOW_ZERO
& *p
) >> 2;
1820 carry
= (CARRY_ZERO
& *p
);
1821 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1822 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1826 /* Carry in, carry out */
1828 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1829 octa2
= (MID_ONE
& *p
) >> 4;
1830 octa3
= (LOW_ONE
& *p
) >> 1;
1831 carry
= (CARRY_ONE
& *p
);
1832 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1833 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1834 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1838 /* Carry in, no carry out */
1840 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1841 octa2
= (MID_TWO
& *p
) >> 3;
1842 octa3
= (LOW_TWO
& *p
);
1844 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1845 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1846 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1850 error (_("Internal error in octal conversion;"));
1854 cycle
= cycle
% BITS_IN_OCTAL
;
1860 /* Possibly negate the integer represented by BYTES. It contains LEN
1861 bytes in the specified byte order. If the integer is negative,
1862 copy it into OUT_VEC, negate it, and return true. Otherwise, do
1863 nothing and return false. */
1866 maybe_negate_by_bytes (const gdb_byte
*bytes
, unsigned len
,
1867 enum bfd_endian byte_order
,
1868 gdb::byte_vector
*out_vec
)
1871 gdb_assert (len
> 0);
1872 if (byte_order
== BFD_ENDIAN_BIG
)
1873 sign_byte
= bytes
[0];
1875 sign_byte
= bytes
[len
- 1];
1876 if ((sign_byte
& 0x80) == 0)
1879 out_vec
->resize (len
);
1881 /* Compute -x == 1 + ~x. */
1882 if (byte_order
== BFD_ENDIAN_LITTLE
)
1885 for (unsigned i
= 0; i
< len
; ++i
)
1887 unsigned tem
= (0xff & ~bytes
[i
]) + carry
;
1888 (*out_vec
)[i
] = tem
& 0xff;
1895 for (unsigned i
= len
; i
> 0; --i
)
1897 unsigned tem
= (0xff & ~bytes
[i
- 1]) + carry
;
1898 (*out_vec
)[i
- 1] = tem
& 0xff;
1906 /* VALADDR points to an integer of LEN bytes.
1907 Print it in decimal on stream or format it in buf. */
1910 print_decimal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1911 unsigned len
, bool is_signed
,
1912 enum bfd_endian byte_order
)
1915 #define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */
1916 #define CARRY_LEFT( x ) ((x) % TEN)
1917 #define SHIFT( x ) ((x) << 4)
1918 #define LOW_NIBBLE( x ) ( (x) & 0x00F)
1919 #define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4)
1924 int i
, j
, decimal_digits
;
1928 gdb::byte_vector negated_bytes
;
1930 && maybe_negate_by_bytes (valaddr
, len
, byte_order
, &negated_bytes
))
1932 fputs_filtered ("-", stream
);
1933 valaddr
= negated_bytes
.data ();
1936 /* Base-ten number is less than twice as many digits
1937 as the base 16 number, which is 2 digits per byte. */
1939 decimal_len
= len
* 2 * 2;
1940 std::vector
<unsigned char> digits (decimal_len
, 0);
1942 /* Ok, we have an unknown number of bytes of data to be printed in
1945 * Given a hex number (in nibbles) as XYZ, we start by taking X and
1946 * decimalizing it as "x1 x2" in two decimal nibbles. Then we multiply
1947 * the nibbles by 16, add Y and re-decimalize. Repeat with Z.
1949 * The trick is that "digits" holds a base-10 number, but sometimes
1950 * the individual digits are > 10.
1952 * Outer loop is per nibble (hex digit) of input, from MSD end to
1955 decimal_digits
= 0; /* Number of decimal digits so far */
1956 p
= (byte_order
== BFD_ENDIAN_BIG
) ? valaddr
: valaddr
+ len
- 1;
1958 while ((byte_order
== BFD_ENDIAN_BIG
) ? (p
< valaddr
+ len
) : (p
>= valaddr
))
1961 * Multiply current base-ten number by 16 in place.
1962 * Each digit was between 0 and 9, now is between
1965 for (j
= 0; j
< decimal_digits
; j
++)
1967 digits
[j
] = SHIFT (digits
[j
]);
1970 /* Take the next nibble off the input and add it to what
1971 * we've got in the LSB position. Bottom 'digit' is now
1972 * between 0 and 159.
1974 * "flip" is used to run this loop twice for each byte.
1978 /* Take top nibble. */
1980 digits
[0] += HIGH_NIBBLE (*p
);
1985 /* Take low nibble and bump our pointer "p". */
1987 digits
[0] += LOW_NIBBLE (*p
);
1988 if (byte_order
== BFD_ENDIAN_BIG
)
1995 /* Re-decimalize. We have to do this often enough
1996 * that we don't overflow, but once per nibble is
1997 * overkill. Easier this way, though. Note that the
1998 * carry is often larger than 10 (e.g. max initial
1999 * carry out of lowest nibble is 15, could bubble all
2000 * the way up greater than 10). So we have to do
2001 * the carrying beyond the last current digit.
2004 for (j
= 0; j
< decimal_len
- 1; j
++)
2008 /* "/" won't handle an unsigned char with
2009 * a value that if signed would be negative.
2010 * So extend to longword int via "dummy".
2013 carry
= CARRY_OUT (dummy
);
2014 digits
[j
] = CARRY_LEFT (dummy
);
2016 if (j
>= decimal_digits
&& carry
== 0)
2019 * All higher digits are 0 and we
2020 * no longer have a carry.
2022 * Note: "j" is 0-based, "decimal_digits" is
2025 decimal_digits
= j
+ 1;
2031 /* Ok, now "digits" is the decimal representation, with
2032 the "decimal_digits" actual digits. Print! */
2034 for (i
= decimal_digits
- 1; i
> 0 && digits
[i
] == 0; --i
)
2039 fprintf_filtered (stream
, "%1d", digits
[i
]);
2043 /* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */
2046 print_hex_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
2047 unsigned len
, enum bfd_endian byte_order
,
2052 fputs_filtered ("0x", stream
);
2053 if (byte_order
== BFD_ENDIAN_BIG
)
2059 /* Strip leading 0 bytes, but be sure to leave at least a
2060 single byte at the end. */
2061 for (; p
< valaddr
+ len
- 1 && !*p
; ++p
)
2065 const gdb_byte
*first
= p
;
2070 /* When not zero-padding, use a different format for the
2071 very first byte printed. */
2072 if (!zero_pad
&& p
== first
)
2073 fprintf_filtered (stream
, "%x", *p
);
2075 fprintf_filtered (stream
, "%02x", *p
);
2080 p
= valaddr
+ len
- 1;
2084 /* Strip leading 0 bytes, but be sure to leave at least a
2085 single byte at the end. */
2086 for (; p
>= valaddr
+ 1 && !*p
; --p
)
2090 const gdb_byte
*first
= p
;
2095 /* When not zero-padding, use a different format for the
2096 very first byte printed. */
2097 if (!zero_pad
&& p
== first
)
2098 fprintf_filtered (stream
, "%x", *p
);
2100 fprintf_filtered (stream
, "%02x", *p
);
2105 /* VALADDR points to a char integer of LEN bytes.
2106 Print it out in appropriate language form on stream.
2107 Omit any leading zero chars. */
2110 print_char_chars (struct ui_file
*stream
, struct type
*type
,
2111 const gdb_byte
*valaddr
,
2112 unsigned len
, enum bfd_endian byte_order
)
2116 if (byte_order
== BFD_ENDIAN_BIG
)
2119 while (p
< valaddr
+ len
- 1 && *p
== 0)
2122 while (p
< valaddr
+ len
)
2124 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
2130 p
= valaddr
+ len
- 1;
2131 while (p
> valaddr
&& *p
== 0)
2134 while (p
>= valaddr
)
2136 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
2142 /* Print function pointer with inferior address ADDRESS onto stdio
2146 print_function_pointer_address (const struct value_print_options
*options
,
2147 struct gdbarch
*gdbarch
,
2149 struct ui_file
*stream
)
2152 = gdbarch_convert_from_func_ptr_addr (gdbarch
, address
,
2153 current_top_target ());
2155 /* If the function pointer is represented by a description, print
2156 the address of the description. */
2157 if (options
->addressprint
&& func_addr
!= address
)
2159 fputs_filtered ("@", stream
);
2160 fputs_filtered (paddress (gdbarch
, address
), stream
);
2161 fputs_filtered (": ", stream
);
2163 print_address_demangle (options
, gdbarch
, func_addr
, stream
, demangle
);
2167 /* Print on STREAM using the given OPTIONS the index for the element
2168 at INDEX of an array whose index type is INDEX_TYPE. */
2171 maybe_print_array_index (struct type
*index_type
, LONGEST index
,
2172 struct ui_file
*stream
,
2173 const struct value_print_options
*options
)
2175 struct value
*index_value
;
2177 if (!options
->print_array_indexes
)
2180 index_value
= value_from_longest (index_type
, index
);
2182 LA_PRINT_ARRAY_INDEX (index_value
, stream
, options
);
2185 /* Called by various <lang>_val_print routines to print elements of an
2186 array in the form "<elem1>, <elem2>, <elem3>, ...".
2188 (FIXME?) Assumes array element separator is a comma, which is correct
2189 for all languages currently handled.
2190 (FIXME?) Some languages have a notation for repeated array elements,
2191 perhaps we should try to use that notation when appropriate. */
2194 val_print_array_elements (struct type
*type
,
2195 LONGEST embedded_offset
,
2196 CORE_ADDR address
, struct ui_file
*stream
,
2199 const struct value_print_options
*options
,
2202 unsigned int things_printed
= 0;
2204 struct type
*elttype
, *index_type
, *base_index_type
;
2206 /* Position of the array element we are examining to see
2207 whether it is repeated. */
2209 /* Number of repetitions we have detected so far. */
2211 LONGEST low_bound
, high_bound
;
2212 LONGEST low_pos
, high_pos
;
2214 elttype
= TYPE_TARGET_TYPE (type
);
2215 eltlen
= type_length_units (check_typedef (elttype
));
2216 index_type
= TYPE_INDEX_TYPE (type
);
2218 if (get_array_bounds (type
, &low_bound
, &high_bound
))
2220 if (TYPE_CODE (index_type
) == TYPE_CODE_RANGE
)
2221 base_index_type
= TYPE_TARGET_TYPE (index_type
);
2223 base_index_type
= index_type
;
2225 /* Non-contiguous enumerations types can by used as index types
2226 in some languages (e.g. Ada). In this case, the array length
2227 shall be computed from the positions of the first and last
2228 literal in the enumeration type, and not from the values
2229 of these literals. */
2230 if (!discrete_position (base_index_type
, low_bound
, &low_pos
)
2231 || !discrete_position (base_index_type
, high_bound
, &high_pos
))
2233 warning (_("unable to get positions in array, use bounds instead"));
2234 low_pos
= low_bound
;
2235 high_pos
= high_bound
;
2238 /* The array length should normally be HIGH_POS - LOW_POS + 1.
2239 But we have to be a little extra careful, because some languages
2240 such as Ada allow LOW_POS to be greater than HIGH_POS for
2241 empty arrays. In that situation, the array length is just zero,
2243 if (low_pos
> high_pos
)
2246 len
= high_pos
- low_pos
+ 1;
2250 warning (_("unable to get bounds of array, assuming null array"));
2255 annotate_array_section_begin (i
, elttype
);
2257 for (; i
< len
&& things_printed
< options
->print_max
; i
++)
2261 if (options
->prettyformat_arrays
)
2263 fprintf_filtered (stream
, ",\n");
2264 print_spaces_filtered (2 + 2 * recurse
, stream
);
2268 fprintf_filtered (stream
, ", ");
2271 wrap_here (n_spaces (2 + 2 * recurse
));
2272 maybe_print_array_index (index_type
, i
+ low_bound
,
2277 /* Only check for reps if repeat_count_threshold is not set to
2278 UINT_MAX (unlimited). */
2279 if (options
->repeat_count_threshold
< UINT_MAX
)
2282 && value_contents_eq (val
,
2283 embedded_offset
+ i
* eltlen
,
2294 if (reps
> options
->repeat_count_threshold
)
2296 val_print (elttype
, embedded_offset
+ i
* eltlen
,
2297 address
, stream
, recurse
+ 1, val
, options
,
2299 annotate_elt_rep (reps
);
2300 fprintf_filtered (stream
, " %p[<repeats %u times>%p]",
2301 metadata_style
.style ().ptr (), reps
, nullptr);
2302 annotate_elt_rep_end ();
2305 things_printed
+= options
->repeat_count_threshold
;
2309 val_print (elttype
, embedded_offset
+ i
* eltlen
,
2311 stream
, recurse
+ 1, val
, options
, current_language
);
2316 annotate_array_section_end ();
2319 fprintf_filtered (stream
, "...");
2323 /* See valprint.h. */
2326 value_print_array_elements (struct value
*val
, struct ui_file
*stream
,
2328 const struct value_print_options
*options
,
2331 unsigned int things_printed
= 0;
2333 struct type
*elttype
, *index_type
, *base_index_type
;
2335 /* Position of the array element we are examining to see
2336 whether it is repeated. */
2338 /* Number of repetitions we have detected so far. */
2340 LONGEST low_bound
, high_bound
;
2341 LONGEST low_pos
, high_pos
;
2343 struct type
*type
= check_typedef (value_type (val
));
2345 elttype
= TYPE_TARGET_TYPE (type
);
2346 eltlen
= type_length_units (check_typedef (elttype
));
2347 index_type
= TYPE_INDEX_TYPE (type
);
2349 if (get_array_bounds (type
, &low_bound
, &high_bound
))
2351 if (TYPE_CODE (index_type
) == TYPE_CODE_RANGE
)
2352 base_index_type
= TYPE_TARGET_TYPE (index_type
);
2354 base_index_type
= index_type
;
2356 /* Non-contiguous enumerations types can by used as index types
2357 in some languages (e.g. Ada). In this case, the array length
2358 shall be computed from the positions of the first and last
2359 literal in the enumeration type, and not from the values
2360 of these literals. */
2361 if (!discrete_position (base_index_type
, low_bound
, &low_pos
)
2362 || !discrete_position (base_index_type
, high_bound
, &high_pos
))
2364 warning (_("unable to get positions in array, use bounds instead"));
2365 low_pos
= low_bound
;
2366 high_pos
= high_bound
;
2369 /* The array length should normally be HIGH_POS - LOW_POS + 1.
2370 But we have to be a little extra careful, because some languages
2371 such as Ada allow LOW_POS to be greater than HIGH_POS for
2372 empty arrays. In that situation, the array length is just zero,
2374 if (low_pos
> high_pos
)
2377 len
= high_pos
- low_pos
+ 1;
2381 warning (_("unable to get bounds of array, assuming null array"));
2386 annotate_array_section_begin (i
, elttype
);
2388 for (; i
< len
&& things_printed
< options
->print_max
; i
++)
2390 scoped_value_mark free_values
;
2394 if (options
->prettyformat_arrays
)
2396 fprintf_filtered (stream
, ",\n");
2397 print_spaces_filtered (2 + 2 * recurse
, stream
);
2400 fprintf_filtered (stream
, ", ");
2402 wrap_here (n_spaces (2 + 2 * recurse
));
2403 maybe_print_array_index (index_type
, i
+ low_bound
,
2408 /* Only check for reps if repeat_count_threshold is not set to
2409 UINT_MAX (unlimited). */
2410 if (options
->repeat_count_threshold
< UINT_MAX
)
2413 && value_contents_eq (val
, i
* eltlen
,
2422 struct value
*element
= value_from_component (val
, elttype
, eltlen
* i
);
2423 common_val_print (element
, stream
, recurse
+ 1, options
,
2426 if (reps
> options
->repeat_count_threshold
)
2428 annotate_elt_rep (reps
);
2429 fprintf_filtered (stream
, " %p[<repeats %u times>%p]",
2430 metadata_style
.style ().ptr (), reps
, nullptr);
2431 annotate_elt_rep_end ();
2434 things_printed
+= options
->repeat_count_threshold
;
2442 annotate_array_section_end ();
2444 fprintf_filtered (stream
, "...");
2447 /* Read LEN bytes of target memory at address MEMADDR, placing the
2448 results in GDB's memory at MYADDR. Returns a count of the bytes
2449 actually read, and optionally a target_xfer_status value in the
2450 location pointed to by ERRPTR if ERRPTR is non-null. */
2452 /* FIXME: cagney/1999-10-14: Only used by val_print_string. Can this
2453 function be eliminated. */
2456 partial_memory_read (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
2457 int len
, int *errptr
)
2459 int nread
; /* Number of bytes actually read. */
2460 int errcode
; /* Error from last read. */
2462 /* First try a complete read. */
2463 errcode
= target_read_memory (memaddr
, myaddr
, len
);
2471 /* Loop, reading one byte at a time until we get as much as we can. */
2472 for (errcode
= 0, nread
= 0; len
> 0 && errcode
== 0; nread
++, len
--)
2474 errcode
= target_read_memory (memaddr
++, myaddr
++, 1);
2476 /* If an error, the last read was unsuccessful, so adjust count. */
2489 /* Read a string from the inferior, at ADDR, with LEN characters of
2490 WIDTH bytes each. Fetch at most FETCHLIMIT characters. BUFFER
2491 will be set to a newly allocated buffer containing the string, and
2492 BYTES_READ will be set to the number of bytes read. Returns 0 on
2493 success, or a target_xfer_status on failure.
2495 If LEN > 0, reads the lesser of LEN or FETCHLIMIT characters
2496 (including eventual NULs in the middle or end of the string).
2498 If LEN is -1, stops at the first null character (not necessarily
2499 the first null byte) up to a maximum of FETCHLIMIT characters. Set
2500 FETCHLIMIT to UINT_MAX to read as many characters as possible from
2503 Unless an exception is thrown, BUFFER will always be allocated, even on
2504 failure. In this case, some characters might have been read before the
2505 failure happened. Check BYTES_READ to recognize this situation.
2507 Note: There was a FIXME asking to make this code use target_read_string,
2508 but this function is more general (can read past null characters, up to
2509 given LEN). Besides, it is used much more often than target_read_string
2510 so it is more tested. Perhaps callers of target_read_string should use
2511 this function instead? */
2514 read_string (CORE_ADDR addr
, int len
, int width
, unsigned int fetchlimit
,
2515 enum bfd_endian byte_order
, gdb::unique_xmalloc_ptr
<gdb_byte
> *buffer
,
2518 int errcode
; /* Errno returned from bad reads. */
2519 unsigned int nfetch
; /* Chars to fetch / chars fetched. */
2520 gdb_byte
*bufptr
; /* Pointer to next available byte in
2523 /* Loop until we either have all the characters, or we encounter
2524 some error, such as bumping into the end of the address space. */
2526 buffer
->reset (nullptr);
2530 /* We want fetchlimit chars, so we might as well read them all in
2532 unsigned int fetchlen
= std::min ((unsigned) len
, fetchlimit
);
2534 buffer
->reset ((gdb_byte
*) xmalloc (fetchlen
* width
));
2535 bufptr
= buffer
->get ();
2537 nfetch
= partial_memory_read (addr
, bufptr
, fetchlen
* width
, &errcode
)
2539 addr
+= nfetch
* width
;
2540 bufptr
+= nfetch
* width
;
2544 unsigned long bufsize
= 0;
2545 unsigned int chunksize
; /* Size of each fetch, in chars. */
2546 int found_nul
; /* Non-zero if we found the nul char. */
2547 gdb_byte
*limit
; /* First location past end of fetch buffer. */
2550 /* We are looking for a NUL terminator to end the fetching, so we
2551 might as well read in blocks that are large enough to be efficient,
2552 but not so large as to be slow if fetchlimit happens to be large.
2553 So we choose the minimum of 8 and fetchlimit. We used to use 200
2554 instead of 8 but 200 is way too big for remote debugging over a
2556 chunksize
= std::min (8u, fetchlimit
);
2561 nfetch
= std::min ((unsigned long) chunksize
, fetchlimit
- bufsize
);
2563 if (*buffer
== NULL
)
2564 buffer
->reset ((gdb_byte
*) xmalloc (nfetch
* width
));
2566 buffer
->reset ((gdb_byte
*) xrealloc (buffer
->release (),
2567 (nfetch
+ bufsize
) * width
));
2569 bufptr
= buffer
->get () + bufsize
* width
;
2572 /* Read as much as we can. */
2573 nfetch
= partial_memory_read (addr
, bufptr
, nfetch
* width
, &errcode
)
2576 /* Scan this chunk for the null character that terminates the string
2577 to print. If found, we don't need to fetch any more. Note
2578 that bufptr is explicitly left pointing at the next character
2579 after the null character, or at the next character after the end
2582 limit
= bufptr
+ nfetch
* width
;
2583 while (bufptr
< limit
)
2587 c
= extract_unsigned_integer (bufptr
, width
, byte_order
);
2592 /* We don't care about any error which happened after
2593 the NUL terminator. */
2600 while (errcode
== 0 /* no error */
2601 && bufptr
- buffer
->get () < fetchlimit
* width
/* no overrun */
2602 && !found_nul
); /* haven't found NUL yet */
2605 { /* Length of string is really 0! */
2606 /* We always allocate *buffer. */
2607 buffer
->reset ((gdb_byte
*) xmalloc (1));
2608 bufptr
= buffer
->get ();
2612 /* bufptr and addr now point immediately beyond the last byte which we
2613 consider part of the string (including a '\0' which ends the string). */
2614 *bytes_read
= bufptr
- buffer
->get ();
2621 /* Return true if print_wchar can display W without resorting to a
2622 numeric escape, false otherwise. */
2625 wchar_printable (gdb_wchar_t w
)
2627 return (gdb_iswprint (w
)
2628 || w
== LCST ('\a') || w
== LCST ('\b')
2629 || w
== LCST ('\f') || w
== LCST ('\n')
2630 || w
== LCST ('\r') || w
== LCST ('\t')
2631 || w
== LCST ('\v'));
2634 /* A helper function that converts the contents of STRING to wide
2635 characters and then appends them to OUTPUT. */
2638 append_string_as_wide (const char *string
,
2639 struct obstack
*output
)
2641 for (; *string
; ++string
)
2643 gdb_wchar_t w
= gdb_btowc (*string
);
2644 obstack_grow (output
, &w
, sizeof (gdb_wchar_t
));
2648 /* Print a wide character W to OUTPUT. ORIG is a pointer to the
2649 original (target) bytes representing the character, ORIG_LEN is the
2650 number of valid bytes. WIDTH is the number of bytes in a base
2651 characters of the type. OUTPUT is an obstack to which wide
2652 characters are emitted. QUOTER is a (narrow) character indicating
2653 the style of quotes surrounding the character to be printed.
2654 NEED_ESCAPE is an in/out flag which is used to track numeric
2655 escapes across calls. */
2658 print_wchar (gdb_wint_t w
, const gdb_byte
*orig
,
2659 int orig_len
, int width
,
2660 enum bfd_endian byte_order
,
2661 struct obstack
*output
,
2662 int quoter
, int *need_escapep
)
2664 int need_escape
= *need_escapep
;
2668 /* iswprint implementation on Windows returns 1 for tab character.
2669 In order to avoid different printout on this host, we explicitly
2670 use wchar_printable function. */
2674 obstack_grow_wstr (output
, LCST ("\\a"));
2677 obstack_grow_wstr (output
, LCST ("\\b"));
2680 obstack_grow_wstr (output
, LCST ("\\f"));
2683 obstack_grow_wstr (output
, LCST ("\\n"));
2686 obstack_grow_wstr (output
, LCST ("\\r"));
2689 obstack_grow_wstr (output
, LCST ("\\t"));
2692 obstack_grow_wstr (output
, LCST ("\\v"));
2696 if (wchar_printable (w
) && (!need_escape
|| (!gdb_iswdigit (w
)
2698 && w
!= LCST ('9'))))
2700 gdb_wchar_t wchar
= w
;
2702 if (w
== gdb_btowc (quoter
) || w
== LCST ('\\'))
2703 obstack_grow_wstr (output
, LCST ("\\"));
2704 obstack_grow (output
, &wchar
, sizeof (gdb_wchar_t
));
2710 for (i
= 0; i
+ width
<= orig_len
; i
+= width
)
2715 value
= extract_unsigned_integer (&orig
[i
], width
,
2717 /* If the value fits in 3 octal digits, print it that
2718 way. Otherwise, print it as a hex escape. */
2720 xsnprintf (octal
, sizeof (octal
), "\\%.3o",
2721 (int) (value
& 0777));
2723 xsnprintf (octal
, sizeof (octal
), "\\x%lx", (long) value
);
2724 append_string_as_wide (octal
, output
);
2726 /* If we somehow have extra bytes, print them now. */
2727 while (i
< orig_len
)
2731 xsnprintf (octal
, sizeof (octal
), "\\%.3o", orig
[i
] & 0xff);
2732 append_string_as_wide (octal
, output
);
2743 /* Print the character C on STREAM as part of the contents of a
2744 literal string whose delimiter is QUOTER. ENCODING names the
2748 generic_emit_char (int c
, struct type
*type
, struct ui_file
*stream
,
2749 int quoter
, const char *encoding
)
2751 enum bfd_endian byte_order
2752 = type_byte_order (type
);
2754 int need_escape
= 0;
2756 c_buf
= (gdb_byte
*) alloca (TYPE_LENGTH (type
));
2757 pack_long (c_buf
, type
, c
);
2759 wchar_iterator
iter (c_buf
, TYPE_LENGTH (type
), encoding
, TYPE_LENGTH (type
));
2761 /* This holds the printable form of the wchar_t data. */
2762 auto_obstack wchar_buf
;
2768 const gdb_byte
*buf
;
2770 int print_escape
= 1;
2771 enum wchar_iterate_result result
;
2773 num_chars
= iter
.iterate (&result
, &chars
, &buf
, &buflen
);
2778 /* If all characters are printable, print them. Otherwise,
2779 we're going to have to print an escape sequence. We
2780 check all characters because we want to print the target
2781 bytes in the escape sequence, and we don't know character
2782 boundaries there. */
2786 for (i
= 0; i
< num_chars
; ++i
)
2787 if (!wchar_printable (chars
[i
]))
2795 for (i
= 0; i
< num_chars
; ++i
)
2796 print_wchar (chars
[i
], buf
, buflen
,
2797 TYPE_LENGTH (type
), byte_order
,
2798 &wchar_buf
, quoter
, &need_escape
);
2802 /* This handles the NUM_CHARS == 0 case as well. */
2804 print_wchar (gdb_WEOF
, buf
, buflen
, TYPE_LENGTH (type
),
2805 byte_order
, &wchar_buf
, quoter
, &need_escape
);
2808 /* The output in the host encoding. */
2809 auto_obstack output
;
2811 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2812 (gdb_byte
*) obstack_base (&wchar_buf
),
2813 obstack_object_size (&wchar_buf
),
2814 sizeof (gdb_wchar_t
), &output
, translit_char
);
2815 obstack_1grow (&output
, '\0');
2817 fputs_filtered ((const char *) obstack_base (&output
), stream
);
2820 /* Return the repeat count of the next character/byte in ITER,
2821 storing the result in VEC. */
2824 count_next_character (wchar_iterator
*iter
,
2825 std::vector
<converted_character
> *vec
)
2827 struct converted_character
*current
;
2831 struct converted_character tmp
;
2835 = iter
->iterate (&tmp
.result
, &chars
, &tmp
.buf
, &tmp
.buflen
);
2836 if (tmp
.num_chars
> 0)
2838 gdb_assert (tmp
.num_chars
< MAX_WCHARS
);
2839 memcpy (tmp
.chars
, chars
, tmp
.num_chars
* sizeof (gdb_wchar_t
));
2841 vec
->push_back (tmp
);
2844 current
= &vec
->back ();
2846 /* Count repeated characters or bytes. */
2847 current
->repeat_count
= 1;
2848 if (current
->num_chars
== -1)
2856 struct converted_character d
;
2863 /* Get the next character. */
2864 d
.num_chars
= iter
->iterate (&d
.result
, &chars
, &d
.buf
, &d
.buflen
);
2866 /* If a character was successfully converted, save the character
2867 into the converted character. */
2868 if (d
.num_chars
> 0)
2870 gdb_assert (d
.num_chars
< MAX_WCHARS
);
2871 memcpy (d
.chars
, chars
, WCHAR_BUFLEN (d
.num_chars
));
2874 /* Determine if the current character is the same as this
2876 if (d
.num_chars
== current
->num_chars
&& d
.result
== current
->result
)
2878 /* There are two cases to consider:
2880 1) Equality of converted character (num_chars > 0)
2881 2) Equality of non-converted character (num_chars == 0) */
2882 if ((current
->num_chars
> 0
2883 && memcmp (current
->chars
, d
.chars
,
2884 WCHAR_BUFLEN (current
->num_chars
)) == 0)
2885 || (current
->num_chars
== 0
2886 && current
->buflen
== d
.buflen
2887 && memcmp (current
->buf
, d
.buf
, current
->buflen
) == 0))
2888 ++current
->repeat_count
;
2896 /* Push this next converted character onto the result vector. */
2897 repeat
= current
->repeat_count
;
2903 /* Print the characters in CHARS to the OBSTACK. QUOTE_CHAR is the quote
2904 character to use with string output. WIDTH is the size of the output
2905 character type. BYTE_ORDER is the target byte order. OPTIONS
2906 is the user's print options. */
2909 print_converted_chars_to_obstack (struct obstack
*obstack
,
2910 const std::vector
<converted_character
> &chars
,
2911 int quote_char
, int width
,
2912 enum bfd_endian byte_order
,
2913 const struct value_print_options
*options
)
2916 const converted_character
*elem
;
2917 enum {START
, SINGLE
, REPEAT
, INCOMPLETE
, FINISH
} state
, last
;
2918 gdb_wchar_t wide_quote_char
= gdb_btowc (quote_char
);
2919 int need_escape
= 0;
2921 /* Set the start state. */
2923 last
= state
= START
;
2931 /* Nothing to do. */
2938 /* We are outputting a single character
2939 (< options->repeat_count_threshold). */
2943 /* We were outputting some other type of content, so we
2944 must output and a comma and a quote. */
2946 obstack_grow_wstr (obstack
, LCST (", "));
2947 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2949 /* Output the character. */
2950 for (j
= 0; j
< elem
->repeat_count
; ++j
)
2952 if (elem
->result
== wchar_iterate_ok
)
2953 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2954 byte_order
, obstack
, quote_char
, &need_escape
);
2956 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2957 byte_order
, obstack
, quote_char
, &need_escape
);
2966 /* We are outputting a character with a repeat count
2967 greater than options->repeat_count_threshold. */
2971 /* We were outputting a single string. Terminate the
2973 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2976 obstack_grow_wstr (obstack
, LCST (", "));
2978 /* Output the character and repeat string. */
2979 obstack_grow_wstr (obstack
, LCST ("'"));
2980 if (elem
->result
== wchar_iterate_ok
)
2981 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2982 byte_order
, obstack
, quote_char
, &need_escape
);
2984 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2985 byte_order
, obstack
, quote_char
, &need_escape
);
2986 obstack_grow_wstr (obstack
, LCST ("'"));
2987 std::string s
= string_printf (_(" <repeats %u times>"),
2988 elem
->repeat_count
);
2989 for (j
= 0; s
[j
]; ++j
)
2991 gdb_wchar_t w
= gdb_btowc (s
[j
]);
2992 obstack_grow (obstack
, &w
, sizeof (gdb_wchar_t
));
2998 /* We are outputting an incomplete sequence. */
3001 /* If we were outputting a string of SINGLE characters,
3002 terminate the quote. */
3003 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
3006 obstack_grow_wstr (obstack
, LCST (", "));
3008 /* Output the incomplete sequence string. */
3009 obstack_grow_wstr (obstack
, LCST ("<incomplete sequence "));
3010 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
, byte_order
,
3011 obstack
, 0, &need_escape
);
3012 obstack_grow_wstr (obstack
, LCST (">"));
3014 /* We do not attempt to output anything after this. */
3019 /* All done. If we were outputting a string of SINGLE
3020 characters, the string must be terminated. Otherwise,
3021 REPEAT and INCOMPLETE are always left properly terminated. */
3023 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
3028 /* Get the next element and state. */
3030 if (state
!= FINISH
)
3032 elem
= &chars
[idx
++];
3033 switch (elem
->result
)
3035 case wchar_iterate_ok
:
3036 case wchar_iterate_invalid
:
3037 if (elem
->repeat_count
> options
->repeat_count_threshold
)
3043 case wchar_iterate_incomplete
:
3047 case wchar_iterate_eof
:
3055 /* Print the character string STRING, printing at most LENGTH
3056 characters. LENGTH is -1 if the string is nul terminated. TYPE is
3057 the type of each character. OPTIONS holds the printing options;
3058 printing stops early if the number hits print_max; repeat counts
3059 are printed as appropriate. Print ellipses at the end if we had to
3060 stop before printing LENGTH characters, or if FORCE_ELLIPSES.
3061 QUOTE_CHAR is the character to print at each end of the string. If
3062 C_STYLE_TERMINATOR is true, and the last character is 0, then it is
3066 generic_printstr (struct ui_file
*stream
, struct type
*type
,
3067 const gdb_byte
*string
, unsigned int length
,
3068 const char *encoding
, int force_ellipses
,
3069 int quote_char
, int c_style_terminator
,
3070 const struct value_print_options
*options
)
3072 enum bfd_endian byte_order
= type_byte_order (type
);
3074 int width
= TYPE_LENGTH (type
);
3076 struct converted_character
*last
;
3080 unsigned long current_char
= 1;
3082 for (i
= 0; current_char
; ++i
)
3085 current_char
= extract_unsigned_integer (string
+ i
* width
,
3091 /* If the string was not truncated due to `set print elements', and
3092 the last byte of it is a null, we don't print that, in
3093 traditional C style. */
3094 if (c_style_terminator
3097 && (extract_unsigned_integer (string
+ (length
- 1) * width
,
3098 width
, byte_order
) == 0))
3103 fputs_filtered ("\"\"", stream
);
3107 /* Arrange to iterate over the characters, in wchar_t form. */
3108 wchar_iterator
iter (string
, length
* width
, encoding
, width
);
3109 std::vector
<converted_character
> converted_chars
;
3111 /* Convert characters until the string is over or the maximum
3112 number of printed characters has been reached. */
3114 while (i
< options
->print_max
)
3120 /* Grab the next character and repeat count. */
3121 r
= count_next_character (&iter
, &converted_chars
);
3123 /* If less than zero, the end of the input string was reached. */
3127 /* Otherwise, add the count to the total print count and get
3128 the next character. */
3132 /* Get the last element and determine if the entire string was
3134 last
= &converted_chars
.back ();
3135 finished
= (last
->result
== wchar_iterate_eof
);
3137 /* Ensure that CONVERTED_CHARS is terminated. */
3138 last
->result
= wchar_iterate_eof
;
3140 /* WCHAR_BUF is the obstack we use to represent the string in
3142 auto_obstack wchar_buf
;
3144 /* Print the output string to the obstack. */
3145 print_converted_chars_to_obstack (&wchar_buf
, converted_chars
, quote_char
,
3146 width
, byte_order
, options
);
3148 if (force_ellipses
|| !finished
)
3149 obstack_grow_wstr (&wchar_buf
, LCST ("..."));
3151 /* OUTPUT is where we collect `char's for printing. */
3152 auto_obstack output
;
3154 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
3155 (gdb_byte
*) obstack_base (&wchar_buf
),
3156 obstack_object_size (&wchar_buf
),
3157 sizeof (gdb_wchar_t
), &output
, translit_char
);
3158 obstack_1grow (&output
, '\0');
3160 fputs_filtered ((const char *) obstack_base (&output
), stream
);
3163 /* Print a string from the inferior, starting at ADDR and printing up to LEN
3164 characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing
3165 stops at the first null byte, otherwise printing proceeds (including null
3166 bytes) until either print_max or LEN characters have been printed,
3167 whichever is smaller. ENCODING is the name of the string's
3168 encoding. It can be NULL, in which case the target encoding is
3172 val_print_string (struct type
*elttype
, const char *encoding
,
3173 CORE_ADDR addr
, int len
,
3174 struct ui_file
*stream
,
3175 const struct value_print_options
*options
)
3177 int force_ellipsis
= 0; /* Force ellipsis to be printed if nonzero. */
3178 int err
; /* Non-zero if we got a bad read. */
3179 int found_nul
; /* Non-zero if we found the nul char. */
3180 unsigned int fetchlimit
; /* Maximum number of chars to print. */
3182 gdb::unique_xmalloc_ptr
<gdb_byte
> buffer
; /* Dynamically growable fetch buffer. */
3183 struct gdbarch
*gdbarch
= get_type_arch (elttype
);
3184 enum bfd_endian byte_order
= type_byte_order (elttype
);
3185 int width
= TYPE_LENGTH (elttype
);
3187 /* First we need to figure out the limit on the number of characters we are
3188 going to attempt to fetch and print. This is actually pretty simple. If
3189 LEN >= zero, then the limit is the minimum of LEN and print_max. If
3190 LEN is -1, then the limit is print_max. This is true regardless of
3191 whether print_max is zero, UINT_MAX (unlimited), or something in between,
3192 because finding the null byte (or available memory) is what actually
3193 limits the fetch. */
3195 fetchlimit
= (len
== -1 ? options
->print_max
: std::min ((unsigned) len
,
3196 options
->print_max
));
3198 err
= read_string (addr
, len
, width
, fetchlimit
, byte_order
,
3199 &buffer
, &bytes_read
);
3203 /* We now have either successfully filled the buffer to fetchlimit,
3204 or terminated early due to an error or finding a null char when
3207 /* Determine found_nul by looking at the last character read. */
3209 if (bytes_read
>= width
)
3210 found_nul
= extract_unsigned_integer (buffer
.get () + bytes_read
- width
,
3211 width
, byte_order
) == 0;
3212 if (len
== -1 && !found_nul
)
3216 /* We didn't find a NUL terminator we were looking for. Attempt
3217 to peek at the next character. If not successful, or it is not
3218 a null byte, then force ellipsis to be printed. */
3220 peekbuf
= (gdb_byte
*) alloca (width
);
3222 if (target_read_memory (addr
, peekbuf
, width
) == 0
3223 && extract_unsigned_integer (peekbuf
, width
, byte_order
) != 0)
3226 else if ((len
>= 0 && err
!= 0) || (len
> bytes_read
/ width
))
3228 /* Getting an error when we have a requested length, or fetching less
3229 than the number of characters actually requested, always make us
3234 /* If we get an error before fetching anything, don't print a string.
3235 But if we fetch something and then get an error, print the string
3236 and then the error message. */
3237 if (err
== 0 || bytes_read
> 0)
3239 LA_PRINT_STRING (stream
, elttype
, buffer
.get (), bytes_read
/ width
,
3240 encoding
, force_ellipsis
, options
);
3245 std::string str
= memory_error_message (TARGET_XFER_E_IO
, gdbarch
, addr
);
3247 fprintf_filtered (stream
, _("<error: %ps>"),
3248 styled_string (metadata_style
.style (),
3252 return (bytes_read
/ width
);
3255 /* Handle 'show print max-depth'. */
3258 show_print_max_depth (struct ui_file
*file
, int from_tty
,
3259 struct cmd_list_element
*c
, const char *value
)
3261 fprintf_filtered (file
, _("Maximum print depth is %s.\n"), value
);
3265 /* The 'set input-radix' command writes to this auxiliary variable.
3266 If the requested radix is valid, INPUT_RADIX is updated; otherwise,
3267 it is left unchanged. */
3269 static unsigned input_radix_1
= 10;
3271 /* Validate an input or output radix setting, and make sure the user
3272 knows what they really did here. Radix setting is confusing, e.g.
3273 setting the input radix to "10" never changes it! */
3276 set_input_radix (const char *args
, int from_tty
, struct cmd_list_element
*c
)
3278 set_input_radix_1 (from_tty
, input_radix_1
);
3282 set_input_radix_1 (int from_tty
, unsigned radix
)
3284 /* We don't currently disallow any input radix except 0 or 1, which don't
3285 make any mathematical sense. In theory, we can deal with any input
3286 radix greater than 1, even if we don't have unique digits for every
3287 value from 0 to radix-1, but in practice we lose on large radix values.
3288 We should either fix the lossage or restrict the radix range more.
3293 input_radix_1
= input_radix
;
3294 error (_("Nonsense input radix ``decimal %u''; input radix unchanged."),
3297 input_radix_1
= input_radix
= radix
;
3300 printf_filtered (_("Input radix now set to "
3301 "decimal %u, hex %x, octal %o.\n"),
3302 radix
, radix
, radix
);
3306 /* The 'set output-radix' command writes to this auxiliary variable.
3307 If the requested radix is valid, OUTPUT_RADIX is updated,
3308 otherwise, it is left unchanged. */
3310 static unsigned output_radix_1
= 10;
3313 set_output_radix (const char *args
, int from_tty
, struct cmd_list_element
*c
)
3315 set_output_radix_1 (from_tty
, output_radix_1
);
3319 set_output_radix_1 (int from_tty
, unsigned radix
)
3321 /* Validate the radix and disallow ones that we aren't prepared to
3322 handle correctly, leaving the radix unchanged. */
3326 user_print_options
.output_format
= 'x'; /* hex */
3329 user_print_options
.output_format
= 0; /* decimal */
3332 user_print_options
.output_format
= 'o'; /* octal */
3335 output_radix_1
= output_radix
;
3336 error (_("Unsupported output radix ``decimal %u''; "
3337 "output radix unchanged."),
3340 output_radix_1
= output_radix
= radix
;
3343 printf_filtered (_("Output radix now set to "
3344 "decimal %u, hex %x, octal %o.\n"),
3345 radix
, radix
, radix
);
3349 /* Set both the input and output radix at once. Try to set the output radix
3350 first, since it has the most restrictive range. An radix that is valid as
3351 an output radix is also valid as an input radix.
3353 It may be useful to have an unusual input radix. If the user wishes to
3354 set an input radix that is not valid as an output radix, he needs to use
3355 the 'set input-radix' command. */
3358 set_radix (const char *arg
, int from_tty
)
3362 radix
= (arg
== NULL
) ? 10 : parse_and_eval_long (arg
);
3363 set_output_radix_1 (0, radix
);
3364 set_input_radix_1 (0, radix
);
3367 printf_filtered (_("Input and output radices now set to "
3368 "decimal %u, hex %x, octal %o.\n"),
3369 radix
, radix
, radix
);
3373 /* Show both the input and output radices. */
3376 show_radix (const char *arg
, int from_tty
)
3380 if (input_radix
== output_radix
)
3382 printf_filtered (_("Input and output radices set to "
3383 "decimal %u, hex %x, octal %o.\n"),
3384 input_radix
, input_radix
, input_radix
);
3388 printf_filtered (_("Input radix set to decimal "
3389 "%u, hex %x, octal %o.\n"),
3390 input_radix
, input_radix
, input_radix
);
3391 printf_filtered (_("Output radix set to decimal "
3392 "%u, hex %x, octal %o.\n"),
3393 output_radix
, output_radix
, output_radix
);
3400 set_print (const char *arg
, int from_tty
)
3403 "\"set print\" must be followed by the name of a print subcommand.\n");
3404 help_list (setprintlist
, "set print ", all_commands
, gdb_stdout
);
3408 show_print (const char *args
, int from_tty
)
3410 cmd_show_list (showprintlist
, from_tty
, "");
3414 set_print_raw (const char *arg
, int from_tty
)
3417 "\"set print raw\" must be followed by the name of a \"print raw\" subcommand.\n");
3418 help_list (setprintrawlist
, "set print raw ", all_commands
, gdb_stdout
);
3422 show_print_raw (const char *args
, int from_tty
)
3424 cmd_show_list (showprintrawlist
, from_tty
, "");
3427 /* Controls printing of vtbl's. */
3429 show_vtblprint (struct ui_file
*file
, int from_tty
,
3430 struct cmd_list_element
*c
, const char *value
)
3432 fprintf_filtered (file
, _("\
3433 Printing of C++ virtual function tables is %s.\n"),
3437 /* Controls looking up an object's derived type using what we find in
3440 show_objectprint (struct ui_file
*file
, int from_tty
,
3441 struct cmd_list_element
*c
,
3444 fprintf_filtered (file
, _("\
3445 Printing of object's derived type based on vtable info is %s.\n"),
3450 show_static_field_print (struct ui_file
*file
, int from_tty
,
3451 struct cmd_list_element
*c
,
3454 fprintf_filtered (file
,
3455 _("Printing of C++ static members is %s.\n"),
3461 /* A couple typedefs to make writing the options a bit more
3463 using boolean_option_def
3464 = gdb::option::boolean_option_def
<value_print_options
>;
3465 using uinteger_option_def
3466 = gdb::option::uinteger_option_def
<value_print_options
>;
3467 using zuinteger_unlimited_option_def
3468 = gdb::option::zuinteger_unlimited_option_def
<value_print_options
>;
3470 /* Definitions of options for the "print" and "compile print"
3472 static const gdb::option::option_def value_print_option_defs
[] = {
3474 boolean_option_def
{
3476 [] (value_print_options
*opt
) { return &opt
->addressprint
; },
3477 show_addressprint
, /* show_cmd_cb */
3478 N_("Set printing of addresses."),
3479 N_("Show printing of addresses."),
3480 NULL
, /* help_doc */
3483 boolean_option_def
{
3485 [] (value_print_options
*opt
) { return &opt
->prettyformat_arrays
; },
3486 show_prettyformat_arrays
, /* show_cmd_cb */
3487 N_("Set pretty formatting of arrays."),
3488 N_("Show pretty formatting of arrays."),
3489 NULL
, /* help_doc */
3492 boolean_option_def
{
3494 [] (value_print_options
*opt
) { return &opt
->print_array_indexes
; },
3495 show_print_array_indexes
, /* show_cmd_cb */
3496 N_("Set printing of array indexes."),
3497 N_("Show printing of array indexes."),
3498 NULL
, /* help_doc */
3501 uinteger_option_def
{
3503 [] (value_print_options
*opt
) { return &opt
->print_max
; },
3504 show_print_max
, /* show_cmd_cb */
3505 N_("Set limit on string chars or array elements to print."),
3506 N_("Show limit on string chars or array elements to print."),
3507 N_("\"unlimited\" causes there to be no limit."),
3510 zuinteger_unlimited_option_def
{
3512 [] (value_print_options
*opt
) { return &opt
->max_depth
; },
3513 show_print_max_depth
, /* show_cmd_cb */
3514 N_("Set maximum print depth for nested structures, unions and arrays."),
3515 N_("Show maximum print depth for nested structures, unions, and arrays."),
3516 N_("When structures, unions, or arrays are nested beyond this depth then they\n\
3517 will be replaced with either '{...}' or '(...)' depending on the language.\n\
3518 Use \"unlimited\" to print the complete structure.")
3521 boolean_option_def
{
3523 [] (value_print_options
*opt
) { return &opt
->stop_print_at_null
; },
3524 show_stop_print_at_null
, /* show_cmd_cb */
3525 N_("Set printing of char arrays to stop at first null char."),
3526 N_("Show printing of char arrays to stop at first null char."),
3527 NULL
, /* help_doc */
3530 boolean_option_def
{
3532 [] (value_print_options
*opt
) { return &opt
->objectprint
; },
3533 show_objectprint
, /* show_cmd_cb */
3534 _("Set printing of C++ virtual function tables."),
3535 _("Show printing of C++ virtual function tables."),
3536 NULL
, /* help_doc */
3539 boolean_option_def
{
3541 [] (value_print_options
*opt
) { return &opt
->prettyformat_structs
; },
3542 show_prettyformat_structs
, /* show_cmd_cb */
3543 N_("Set pretty formatting of structures."),
3544 N_("Show pretty formatting of structures."),
3545 NULL
, /* help_doc */
3548 boolean_option_def
{
3550 [] (value_print_options
*opt
) { return &opt
->raw
; },
3551 NULL
, /* show_cmd_cb */
3552 N_("Set whether to print values in raw form."),
3553 N_("Show whether to print values in raw form."),
3554 N_("If set, values are printed in raw form, bypassing any\n\
3555 pretty-printers for that value.")
3558 uinteger_option_def
{
3560 [] (value_print_options
*opt
) { return &opt
->repeat_count_threshold
; },
3561 show_repeat_count_threshold
, /* show_cmd_cb */
3562 N_("Set threshold for repeated print elements."),
3563 N_("Show threshold for repeated print elements."),
3564 N_("\"unlimited\" causes all elements to be individually printed."),
3567 boolean_option_def
{
3569 [] (value_print_options
*opt
) { return &opt
->static_field_print
; },
3570 show_static_field_print
, /* show_cmd_cb */
3571 N_("Set printing of C++ static members."),
3572 N_("Show printing of C++ static members."),
3573 NULL
, /* help_doc */
3576 boolean_option_def
{
3578 [] (value_print_options
*opt
) { return &opt
->symbol_print
; },
3579 show_symbol_print
, /* show_cmd_cb */
3580 N_("Set printing of symbol names when printing pointers."),
3581 N_("Show printing of symbol names when printing pointers."),
3582 NULL
, /* help_doc */
3585 boolean_option_def
{
3587 [] (value_print_options
*opt
) { return &opt
->unionprint
; },
3588 show_unionprint
, /* show_cmd_cb */
3589 N_("Set printing of unions interior to structures."),
3590 N_("Show printing of unions interior to structures."),
3591 NULL
, /* help_doc */
3594 boolean_option_def
{
3596 [] (value_print_options
*opt
) { return &opt
->vtblprint
; },
3597 show_vtblprint
, /* show_cmd_cb */
3598 N_("Set printing of C++ virtual function tables."),
3599 N_("Show printing of C++ virtual function tables."),
3600 NULL
, /* help_doc */
3604 /* See valprint.h. */
3606 gdb::option::option_def_group
3607 make_value_print_options_def_group (value_print_options
*opts
)
3609 return {{value_print_option_defs
}, opts
};
3612 void _initialize_valprint ();
3614 _initialize_valprint ()
3616 cmd_list_element
*cmd
;
3618 add_prefix_cmd ("print", no_class
, set_print
,
3619 _("Generic command for setting how things print."),
3620 &setprintlist
, "set print ", 0, &setlist
);
3621 add_alias_cmd ("p", "print", no_class
, 1, &setlist
);
3622 /* Prefer set print to set prompt. */
3623 add_alias_cmd ("pr", "print", no_class
, 1, &setlist
);
3625 add_prefix_cmd ("print", no_class
, show_print
,
3626 _("Generic command for showing print settings."),
3627 &showprintlist
, "show print ", 0, &showlist
);
3628 add_alias_cmd ("p", "print", no_class
, 1, &showlist
);
3629 add_alias_cmd ("pr", "print", no_class
, 1, &showlist
);
3631 cmd
= add_prefix_cmd ("raw", no_class
, set_print_raw
,
3633 Generic command for setting what things to print in \"raw\" mode."),
3634 &setprintrawlist
, "set print raw ", 0,
3636 deprecate_cmd (cmd
, nullptr);
3638 cmd
= add_prefix_cmd ("raw", no_class
, show_print_raw
,
3639 _("Generic command for showing \"print raw\" settings."),
3640 &showprintrawlist
, "show print raw ", 0,
3642 deprecate_cmd (cmd
, nullptr);
3644 gdb::option::add_setshow_cmds_for_options
3645 (class_support
, &user_print_options
, value_print_option_defs
,
3646 &setprintlist
, &showprintlist
);
3648 add_setshow_zuinteger_cmd ("input-radix", class_support
, &input_radix_1
,
3650 Set default input radix for entering numbers."), _("\
3651 Show default input radix for entering numbers."), NULL
,
3654 &setlist
, &showlist
);
3656 add_setshow_zuinteger_cmd ("output-radix", class_support
, &output_radix_1
,
3658 Set default output radix for printing of values."), _("\
3659 Show default output radix for printing of values."), NULL
,
3662 &setlist
, &showlist
);
3664 /* The "set radix" and "show radix" commands are special in that
3665 they are like normal set and show commands but allow two normally
3666 independent variables to be either set or shown with a single
3667 command. So the usual deprecated_add_set_cmd() and [deleted]
3668 add_show_from_set() commands aren't really appropriate. */
3669 /* FIXME: i18n: With the new add_setshow_integer command, that is no
3670 longer true - show can display anything. */
3671 add_cmd ("radix", class_support
, set_radix
, _("\
3672 Set default input and output number radices.\n\
3673 Use 'set input-radix' or 'set output-radix' to independently set each.\n\
3674 Without an argument, sets both radices back to the default value of 10."),
3676 add_cmd ("radix", class_support
, show_radix
, _("\
3677 Show the default input and output number radices.\n\
3678 Use 'show input-radix' or 'show output-radix' to independently show each."),