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 const gdb_byte
*valaddr
,
92 struct ui_file
*stream
);
94 #define PRINT_MAX_DEFAULT 200 /* Start print_max off at this value. */
95 #define PRINT_MAX_DEPTH_DEFAULT 20 /* Start print_max_depth off at this value. */
97 struct value_print_options user_print_options
=
99 Val_prettyformat_default
, /* prettyformat */
100 0, /* prettyformat_arrays */
101 0, /* prettyformat_structs */
104 1, /* addressprint */
106 PRINT_MAX_DEFAULT
, /* print_max */
107 10, /* repeat_count_threshold */
108 0, /* output_format */
110 0, /* stop_print_at_null */
111 0, /* print_array_indexes */
113 1, /* static_field_print */
114 1, /* pascal_static_field_print */
117 1, /* symbol_print */
118 PRINT_MAX_DEPTH_DEFAULT
, /* max_depth */
122 /* Initialize *OPTS to be a copy of the user print options. */
124 get_user_print_options (struct value_print_options
*opts
)
126 *opts
= user_print_options
;
129 /* Initialize *OPTS to be a copy of the user print options, but with
130 pretty-formatting disabled. */
132 get_no_prettyformat_print_options (struct value_print_options
*opts
)
134 *opts
= user_print_options
;
135 opts
->prettyformat
= Val_no_prettyformat
;
138 /* Initialize *OPTS to be a copy of the user print options, but using
139 FORMAT as the formatting option. */
141 get_formatted_print_options (struct value_print_options
*opts
,
144 *opts
= user_print_options
;
145 opts
->format
= format
;
149 show_print_max (struct ui_file
*file
, int from_tty
,
150 struct cmd_list_element
*c
, const char *value
)
152 fprintf_filtered (file
,
153 _("Limit on string chars or array "
154 "elements to print is %s.\n"),
159 /* Default input and output radixes, and output format letter. */
161 unsigned input_radix
= 10;
163 show_input_radix (struct ui_file
*file
, int from_tty
,
164 struct cmd_list_element
*c
, const char *value
)
166 fprintf_filtered (file
,
167 _("Default input radix for entering numbers is %s.\n"),
171 unsigned output_radix
= 10;
173 show_output_radix (struct ui_file
*file
, int from_tty
,
174 struct cmd_list_element
*c
, const char *value
)
176 fprintf_filtered (file
,
177 _("Default output radix for printing of values is %s.\n"),
181 /* By default we print arrays without printing the index of each element in
182 the array. This behavior can be changed by setting PRINT_ARRAY_INDEXES. */
185 show_print_array_indexes (struct ui_file
*file
, int from_tty
,
186 struct cmd_list_element
*c
, const char *value
)
188 fprintf_filtered (file
, _("Printing of array indexes is %s.\n"), value
);
191 /* Print repeat counts if there are more than this many repetitions of an
192 element in an array. Referenced by the low level language dependent
196 show_repeat_count_threshold (struct ui_file
*file
, int from_tty
,
197 struct cmd_list_element
*c
, const char *value
)
199 fprintf_filtered (file
, _("Threshold for repeated print elements is %s.\n"),
203 /* If nonzero, stops printing of char arrays at first null. */
206 show_stop_print_at_null (struct ui_file
*file
, int from_tty
,
207 struct cmd_list_element
*c
, const char *value
)
209 fprintf_filtered (file
,
210 _("Printing of char arrays to stop "
211 "at first null char is %s.\n"),
215 /* Controls pretty printing of structures. */
218 show_prettyformat_structs (struct ui_file
*file
, int from_tty
,
219 struct cmd_list_element
*c
, const char *value
)
221 fprintf_filtered (file
, _("Pretty formatting of structures is %s.\n"), value
);
224 /* Controls pretty printing of arrays. */
227 show_prettyformat_arrays (struct ui_file
*file
, int from_tty
,
228 struct cmd_list_element
*c
, const char *value
)
230 fprintf_filtered (file
, _("Pretty formatting of arrays is %s.\n"), value
);
233 /* If nonzero, causes unions inside structures or other unions to be
237 show_unionprint (struct ui_file
*file
, int from_tty
,
238 struct cmd_list_element
*c
, const char *value
)
240 fprintf_filtered (file
,
241 _("Printing of unions interior to structures is %s.\n"),
245 /* If nonzero, causes machine addresses to be printed in certain contexts. */
248 show_addressprint (struct ui_file
*file
, int from_tty
,
249 struct cmd_list_element
*c
, const char *value
)
251 fprintf_filtered (file
, _("Printing of addresses is %s.\n"), value
);
255 show_symbol_print (struct ui_file
*file
, int from_tty
,
256 struct cmd_list_element
*c
, const char *value
)
258 fprintf_filtered (file
,
259 _("Printing of symbols when printing pointers is %s.\n"),
265 /* A helper function for val_print. When printing in "summary" mode,
266 we want to print scalar arguments, but not aggregate arguments.
267 This function distinguishes between the two. */
270 val_print_scalar_type_p (struct type
*type
)
272 type
= check_typedef (type
);
273 while (TYPE_IS_REFERENCE (type
))
275 type
= TYPE_TARGET_TYPE (type
);
276 type
= check_typedef (type
);
278 switch (TYPE_CODE (type
))
280 case TYPE_CODE_ARRAY
:
281 case TYPE_CODE_STRUCT
:
282 case TYPE_CODE_UNION
:
284 case TYPE_CODE_STRING
:
291 /* A helper function for val_print. When printing with limited depth we
292 want to print string and scalar arguments, but not aggregate arguments.
293 This function distinguishes between the two. */
296 val_print_scalar_or_string_type_p (struct type
*type
,
297 const struct language_defn
*language
)
299 return (val_print_scalar_type_p (type
)
300 || language
->la_is_string_type_p (type
));
303 /* See its definition in value.h. */
306 valprint_check_validity (struct ui_file
*stream
,
308 LONGEST embedded_offset
,
309 const struct value
*val
)
311 type
= check_typedef (type
);
313 if (type_not_associated (type
))
315 val_print_not_associated (stream
);
319 if (type_not_allocated (type
))
321 val_print_not_allocated (stream
);
325 if (TYPE_CODE (type
) != TYPE_CODE_UNION
326 && TYPE_CODE (type
) != TYPE_CODE_STRUCT
327 && TYPE_CODE (type
) != TYPE_CODE_ARRAY
)
329 if (value_bits_any_optimized_out (val
,
330 TARGET_CHAR_BIT
* embedded_offset
,
331 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
333 val_print_optimized_out (val
, stream
);
337 if (value_bits_synthetic_pointer (val
, TARGET_CHAR_BIT
* embedded_offset
,
338 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
340 const int is_ref
= TYPE_CODE (type
) == TYPE_CODE_REF
;
341 int ref_is_addressable
= 0;
345 const struct value
*deref_val
= coerce_ref_if_computed (val
);
347 if (deref_val
!= NULL
)
348 ref_is_addressable
= value_lval_const (deref_val
) == lval_memory
;
351 if (!is_ref
|| !ref_is_addressable
)
352 fputs_styled (_("<synthetic pointer>"), metadata_style
.style (),
355 /* C++ references should be valid even if they're synthetic. */
359 if (!value_bytes_available (val
, embedded_offset
, TYPE_LENGTH (type
)))
361 val_print_unavailable (stream
);
370 val_print_optimized_out (const struct value
*val
, struct ui_file
*stream
)
372 if (val
!= NULL
&& value_lval_const (val
) == lval_register
)
373 val_print_not_saved (stream
);
375 fprintf_styled (stream
, metadata_style
.style (), _("<optimized out>"));
379 val_print_not_saved (struct ui_file
*stream
)
381 fprintf_styled (stream
, metadata_style
.style (), _("<not saved>"));
385 val_print_unavailable (struct ui_file
*stream
)
387 fprintf_styled (stream
, metadata_style
.style (), _("<unavailable>"));
391 val_print_invalid_address (struct ui_file
*stream
)
393 fprintf_styled (stream
, metadata_style
.style (), _("<invalid address>"));
396 /* Print a pointer based on the type of its target.
398 Arguments to this functions are roughly the same as those in
399 generic_val_print. A difference is that ADDRESS is the address to print,
400 with embedded_offset already added. ELTTYPE represents
401 the pointed type after check_typedef. */
404 print_unpacked_pointer (struct type
*type
, struct type
*elttype
,
405 CORE_ADDR address
, struct ui_file
*stream
,
406 const struct value_print_options
*options
)
408 struct gdbarch
*gdbarch
= get_type_arch (type
);
410 if (TYPE_CODE (elttype
) == TYPE_CODE_FUNC
)
412 /* Try to print what function it points to. */
413 print_function_pointer_address (options
, gdbarch
, address
, stream
);
417 if (options
->symbol_print
)
418 print_address_demangle (options
, gdbarch
, address
, stream
, demangle
);
419 else if (options
->addressprint
)
420 fputs_filtered (paddress (gdbarch
, address
), stream
);
423 /* generic_val_print helper for TYPE_CODE_ARRAY. */
426 generic_val_print_array (struct type
*type
,
427 int embedded_offset
, CORE_ADDR address
,
428 struct ui_file
*stream
, int recurse
,
429 struct value
*original_value
,
430 const struct value_print_options
*options
,
432 generic_val_print_decorations
*decorations
)
434 struct type
*unresolved_elttype
= TYPE_TARGET_TYPE (type
);
435 struct type
*elttype
= check_typedef (unresolved_elttype
);
437 if (TYPE_LENGTH (type
) > 0 && TYPE_LENGTH (unresolved_elttype
) > 0)
439 LONGEST low_bound
, high_bound
;
441 if (!get_array_bounds (type
, &low_bound
, &high_bound
))
442 error (_("Could not determine the array high bound"));
444 if (options
->prettyformat_arrays
)
446 print_spaces_filtered (2 + 2 * recurse
, stream
);
449 fputs_filtered (decorations
->array_start
, stream
);
450 val_print_array_elements (type
, embedded_offset
,
452 recurse
, original_value
, options
, 0);
453 fputs_filtered (decorations
->array_end
, stream
);
457 /* Array of unspecified length: treat like pointer to first elt. */
458 print_unpacked_pointer (type
, elttype
, address
+ embedded_offset
, stream
,
464 /* generic_val_print helper for TYPE_CODE_PTR. */
467 generic_val_print_ptr (struct type
*type
,
468 int embedded_offset
, struct ui_file
*stream
,
469 struct value
*original_value
,
470 const struct value_print_options
*options
)
472 struct gdbarch
*gdbarch
= get_type_arch (type
);
473 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
475 if (options
->format
&& options
->format
!= 's')
477 val_print_scalar_formatted (type
, embedded_offset
,
478 original_value
, options
, 0, stream
);
482 struct type
*unresolved_elttype
= TYPE_TARGET_TYPE(type
);
483 struct type
*elttype
= check_typedef (unresolved_elttype
);
484 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
485 CORE_ADDR addr
= unpack_pointer (type
,
486 valaddr
+ embedded_offset
* unit_size
);
488 print_unpacked_pointer (type
, elttype
, addr
, stream
, options
);
493 /* generic_val_print helper for TYPE_CODE_MEMBERPTR. */
496 generic_val_print_memberptr (struct type
*type
,
497 int embedded_offset
, struct ui_file
*stream
,
498 struct value
*original_value
,
499 const struct value_print_options
*options
)
501 val_print_scalar_formatted (type
, embedded_offset
,
502 original_value
, options
, 0, stream
);
505 /* Print '@' followed by the address contained in ADDRESS_BUFFER. */
508 print_ref_address (struct type
*type
, const gdb_byte
*address_buffer
,
509 int embedded_offset
, struct ui_file
*stream
)
511 struct gdbarch
*gdbarch
= get_type_arch (type
);
513 if (address_buffer
!= NULL
)
516 = extract_typed_address (address_buffer
+ embedded_offset
, type
);
518 fprintf_filtered (stream
, "@");
519 fputs_filtered (paddress (gdbarch
, address
), stream
);
521 /* Else: we have a non-addressable value, such as a DW_AT_const_value. */
524 /* If VAL is addressable, return the value contents buffer of a value that
525 represents a pointer to VAL. Otherwise return NULL. */
527 static const gdb_byte
*
528 get_value_addr_contents (struct value
*deref_val
)
530 gdb_assert (deref_val
!= NULL
);
532 if (value_lval_const (deref_val
) == lval_memory
)
533 return value_contents_for_printing_const (value_addr (deref_val
));
536 /* We have a non-addressable value, such as a DW_AT_const_value. */
541 /* generic_val_print helper for TYPE_CODE_{RVALUE_,}REF. */
544 generic_val_print_ref (struct type
*type
,
545 int embedded_offset
, struct ui_file
*stream
, int recurse
,
546 struct value
*original_value
,
547 const struct value_print_options
*options
)
549 struct type
*elttype
= check_typedef (TYPE_TARGET_TYPE (type
));
550 struct value
*deref_val
= NULL
;
551 const int value_is_synthetic
552 = value_bits_synthetic_pointer (original_value
,
553 TARGET_CHAR_BIT
* embedded_offset
,
554 TARGET_CHAR_BIT
* TYPE_LENGTH (type
));
555 const int must_coerce_ref
= ((options
->addressprint
&& value_is_synthetic
)
556 || options
->deref_ref
);
557 const int type_is_defined
= TYPE_CODE (elttype
) != TYPE_CODE_UNDEF
;
558 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
560 if (must_coerce_ref
&& type_is_defined
)
562 deref_val
= coerce_ref_if_computed (original_value
);
564 if (deref_val
!= NULL
)
566 /* More complicated computed references are not supported. */
567 gdb_assert (embedded_offset
== 0);
570 deref_val
= value_at (TYPE_TARGET_TYPE (type
),
571 unpack_pointer (type
, valaddr
+ embedded_offset
));
573 /* Else, original_value isn't a synthetic reference or we don't have to print
574 the reference's contents.
576 Notice that for references to TYPE_CODE_STRUCT, 'set print object on' will
577 cause original_value to be a not_lval instead of an lval_computed,
578 which will make value_bits_synthetic_pointer return false.
579 This happens because if options->objectprint is true, c_value_print will
580 overwrite original_value's contents with the result of coercing
581 the reference through value_addr, and then set its type back to
582 TYPE_CODE_REF. In that case we don't have to coerce the reference again;
583 we can simply treat it as non-synthetic and move on. */
585 if (options
->addressprint
)
587 const gdb_byte
*address
= (value_is_synthetic
&& type_is_defined
588 ? get_value_addr_contents (deref_val
)
591 print_ref_address (type
, address
, embedded_offset
, stream
);
593 if (options
->deref_ref
)
594 fputs_filtered (": ", stream
);
597 if (options
->deref_ref
)
600 common_val_print (deref_val
, stream
, recurse
, options
,
603 fputs_filtered ("???", stream
);
607 /* Helper function for generic_val_print_enum.
608 This is also used to print enums in TYPE_CODE_FLAGS values. */
611 generic_val_print_enum_1 (struct type
*type
, LONGEST val
,
612 struct ui_file
*stream
)
617 len
= TYPE_NFIELDS (type
);
618 for (i
= 0; i
< len
; i
++)
621 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
628 fputs_styled (TYPE_FIELD_NAME (type
, i
), variable_name_style
.style (),
631 else if (TYPE_FLAG_ENUM (type
))
635 /* We have a "flag" enum, so we try to decompose it into pieces as
636 appropriate. The enum may have multiple enumerators representing
637 the same bit, in which case we choose to only print the first one
639 for (i
= 0; i
< len
; ++i
)
643 ULONGEST enumval
= TYPE_FIELD_ENUMVAL (type
, i
);
644 int nbits
= count_one_bits_ll (enumval
);
646 gdb_assert (nbits
== 0 || nbits
== 1);
648 if ((val
& enumval
) != 0)
652 fputs_filtered ("(", stream
);
656 fputs_filtered (" | ", stream
);
658 val
&= ~TYPE_FIELD_ENUMVAL (type
, i
);
659 fputs_styled (TYPE_FIELD_NAME (type
, i
),
660 variable_name_style
.style (), stream
);
666 /* There are leftover bits, print them. */
668 fputs_filtered ("(", stream
);
670 fputs_filtered (" | ", stream
);
672 fputs_filtered ("unknown: 0x", stream
);
673 print_longest (stream
, 'x', 0, val
);
674 fputs_filtered (")", stream
);
678 /* Nothing has been printed and the value is 0, the enum value must
680 fputs_filtered ("0", stream
);
684 /* Something has been printed, close the parenthesis. */
685 fputs_filtered (")", stream
);
689 print_longest (stream
, 'd', 0, val
);
692 /* generic_val_print helper for TYPE_CODE_ENUM. */
695 generic_val_print_enum (struct type
*type
,
696 int embedded_offset
, struct ui_file
*stream
,
697 struct value
*original_value
,
698 const struct value_print_options
*options
)
701 struct gdbarch
*gdbarch
= get_type_arch (type
);
702 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
706 val_print_scalar_formatted (type
, embedded_offset
,
707 original_value
, options
, 0, stream
);
711 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
713 val
= unpack_long (type
, valaddr
+ embedded_offset
* unit_size
);
715 generic_val_print_enum_1 (type
, val
, stream
);
719 /* generic_val_print helper for TYPE_CODE_FLAGS. */
722 generic_val_print_flags (struct type
*type
,
723 int embedded_offset
, struct ui_file
*stream
,
724 struct value
*original_value
,
725 const struct value_print_options
*options
)
729 val_print_scalar_formatted (type
, embedded_offset
, original_value
,
733 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
735 val_print_type_code_flags (type
, valaddr
+ embedded_offset
, stream
);
739 /* generic_val_print helper for TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
742 generic_val_print_func (struct type
*type
,
743 int embedded_offset
, CORE_ADDR address
,
744 struct ui_file
*stream
,
745 struct value
*original_value
,
746 const struct value_print_options
*options
)
748 struct gdbarch
*gdbarch
= get_type_arch (type
);
752 val_print_scalar_formatted (type
, embedded_offset
,
753 original_value
, options
, 0, stream
);
757 /* FIXME, we should consider, at least for ANSI C language,
758 eliminating the distinction made between FUNCs and POINTERs
760 fprintf_filtered (stream
, "{");
761 type_print (type
, "", stream
, -1);
762 fprintf_filtered (stream
, "} ");
763 /* Try to print what function it points to, and its address. */
764 print_address_demangle (options
, gdbarch
, address
, stream
, demangle
);
768 /* generic_val_print helper for TYPE_CODE_BOOL. */
771 generic_val_print_bool (struct type
*type
,
772 int embedded_offset
, struct ui_file
*stream
,
773 struct value
*original_value
,
774 const struct value_print_options
*options
,
775 const struct generic_val_print_decorations
*decorations
)
778 struct gdbarch
*gdbarch
= get_type_arch (type
);
779 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
781 if (options
->format
|| options
->output_format
)
783 struct value_print_options opts
= *options
;
784 opts
.format
= (options
->format
? options
->format
785 : options
->output_format
);
786 val_print_scalar_formatted (type
, embedded_offset
,
787 original_value
, &opts
, 0, stream
);
791 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
793 val
= unpack_long (type
, valaddr
+ embedded_offset
* unit_size
);
795 fputs_filtered (decorations
->false_name
, stream
);
797 fputs_filtered (decorations
->true_name
, stream
);
799 print_longest (stream
, 'd', 0, val
);
803 /* generic_val_print helper for TYPE_CODE_INT. */
806 generic_val_print_int (struct type
*type
,
807 int embedded_offset
, struct ui_file
*stream
,
808 struct value
*original_value
,
809 const struct value_print_options
*options
)
811 struct value_print_options opts
= *options
;
813 opts
.format
= (options
->format
? options
->format
814 : options
->output_format
);
815 val_print_scalar_formatted (type
, embedded_offset
,
816 original_value
, &opts
, 0, stream
);
819 /* generic_val_print helper for TYPE_CODE_CHAR. */
822 generic_val_print_char (struct type
*type
, struct type
*unresolved_type
,
824 struct ui_file
*stream
,
825 struct value
*original_value
,
826 const struct value_print_options
*options
)
829 struct gdbarch
*gdbarch
= get_type_arch (type
);
830 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
832 if (options
->format
|| options
->output_format
)
834 struct value_print_options opts
= *options
;
836 opts
.format
= (options
->format
? options
->format
837 : options
->output_format
);
838 val_print_scalar_formatted (type
, embedded_offset
,
839 original_value
, &opts
, 0, stream
);
843 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
845 val
= unpack_long (type
, valaddr
+ embedded_offset
* unit_size
);
846 if (TYPE_UNSIGNED (type
))
847 fprintf_filtered (stream
, "%u", (unsigned int) val
);
849 fprintf_filtered (stream
, "%d", (int) val
);
850 fputs_filtered (" ", stream
);
851 LA_PRINT_CHAR (val
, unresolved_type
, stream
);
855 /* generic_val_print helper for TYPE_CODE_FLT and TYPE_CODE_DECFLOAT. */
858 generic_val_print_float (struct type
*type
,
859 int embedded_offset
, struct ui_file
*stream
,
860 struct value
*original_value
,
861 const struct value_print_options
*options
)
863 struct gdbarch
*gdbarch
= get_type_arch (type
);
864 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
868 val_print_scalar_formatted (type
, embedded_offset
,
869 original_value
, options
, 0, stream
);
873 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
875 print_floating (valaddr
+ embedded_offset
* unit_size
, type
, stream
);
879 /* generic_val_print helper for TYPE_CODE_COMPLEX. */
882 generic_val_print_complex (struct type
*type
,
883 int embedded_offset
, struct ui_file
*stream
,
884 struct value
*original_value
,
885 const struct value_print_options
*options
,
886 const struct generic_val_print_decorations
889 struct gdbarch
*gdbarch
= get_type_arch (type
);
890 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
891 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
893 fprintf_filtered (stream
, "%s", decorations
->complex_prefix
);
895 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
),
896 embedded_offset
, original_value
, options
, 0,
899 print_floating (valaddr
+ embedded_offset
* unit_size
,
900 TYPE_TARGET_TYPE (type
), stream
);
901 fprintf_filtered (stream
, "%s", decorations
->complex_infix
);
903 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
),
905 + type_length_units (TYPE_TARGET_TYPE (type
)),
906 original_value
, options
, 0, stream
);
908 print_floating (valaddr
+ embedded_offset
* unit_size
909 + TYPE_LENGTH (TYPE_TARGET_TYPE (type
)),
910 TYPE_TARGET_TYPE (type
), stream
);
911 fprintf_filtered (stream
, "%s", decorations
->complex_suffix
);
914 /* A generic val_print that is suitable for use by language
915 implementations of the la_val_print method. This function can
916 handle most type codes, though not all, notably exception
917 TYPE_CODE_UNION and TYPE_CODE_STRUCT, which must be implemented by
920 Most arguments are as to val_print.
922 The additional DECORATIONS argument can be used to customize the
923 output in some small, language-specific ways. */
926 generic_val_print (struct type
*type
,
927 int embedded_offset
, CORE_ADDR address
,
928 struct ui_file
*stream
, int recurse
,
929 struct value
*original_value
,
930 const struct value_print_options
*options
,
931 const struct generic_val_print_decorations
*decorations
)
933 struct type
*unresolved_type
= type
;
935 type
= check_typedef (type
);
936 switch (TYPE_CODE (type
))
938 case TYPE_CODE_ARRAY
:
939 generic_val_print_array (type
, embedded_offset
, address
, stream
,
940 recurse
, original_value
, options
, decorations
);
943 case TYPE_CODE_MEMBERPTR
:
944 generic_val_print_memberptr (type
, embedded_offset
, stream
,
945 original_value
, options
);
949 generic_val_print_ptr (type
, embedded_offset
, stream
,
950 original_value
, options
);
954 case TYPE_CODE_RVALUE_REF
:
955 generic_val_print_ref (type
, embedded_offset
, stream
, recurse
,
956 original_value
, options
);
960 generic_val_print_enum (type
, embedded_offset
, stream
,
961 original_value
, options
);
964 case TYPE_CODE_FLAGS
:
965 generic_val_print_flags (type
, embedded_offset
, stream
,
966 original_value
, options
);
970 case TYPE_CODE_METHOD
:
971 generic_val_print_func (type
, embedded_offset
, address
, stream
,
972 original_value
, options
);
976 generic_val_print_bool (type
, embedded_offset
, stream
,
977 original_value
, options
, decorations
);
980 case TYPE_CODE_RANGE
:
981 /* FIXME: create_static_range_type does not set the unsigned bit in a
982 range type (I think it probably should copy it from the
983 target type), so we won't print values which are too large to
984 fit in a signed integer correctly. */
985 /* FIXME: Doesn't handle ranges of enums correctly. (Can't just
986 print with the target type, though, because the size of our
987 type and the target type might differ). */
992 generic_val_print_int (type
, embedded_offset
, stream
,
993 original_value
, options
);
997 generic_val_print_char (type
, unresolved_type
, embedded_offset
,
998 stream
, original_value
, options
);
1002 case TYPE_CODE_DECFLOAT
:
1003 generic_val_print_float (type
, embedded_offset
, stream
,
1004 original_value
, options
);
1007 case TYPE_CODE_VOID
:
1008 fputs_filtered (decorations
->void_name
, stream
);
1011 case TYPE_CODE_ERROR
:
1012 fprintf_filtered (stream
, "%s", TYPE_ERROR_NAME (type
));
1015 case TYPE_CODE_UNDEF
:
1016 /* This happens (without TYPE_STUB set) on systems which don't use
1017 dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
1018 and no complete type for struct foo in that file. */
1019 fprintf_styled (stream
, metadata_style
.style (), _("<incomplete type>"));
1022 case TYPE_CODE_COMPLEX
:
1023 generic_val_print_complex (type
, embedded_offset
, stream
,
1024 original_value
, options
, decorations
);
1027 case TYPE_CODE_UNION
:
1028 case TYPE_CODE_STRUCT
:
1029 case TYPE_CODE_METHODPTR
:
1031 error (_("Unhandled type code %d in symbol table."),
1036 /* See valprint.h. */
1039 generic_value_print (struct value
*val
, struct ui_file
*stream
, int recurse
,
1040 const struct value_print_options
*options
,
1041 const struct generic_val_print_decorations
*decorations
)
1043 struct type
*type
= value_type (val
);
1044 struct type
*unresolved_type
= type
;
1046 type
= check_typedef (type
);
1047 switch (TYPE_CODE (type
))
1049 case TYPE_CODE_ARRAY
:
1050 generic_val_print_array (type
, 0, value_address (val
), stream
,
1051 recurse
, val
, options
, decorations
);
1054 case TYPE_CODE_MEMBERPTR
:
1055 generic_val_print_memberptr (type
, 0, stream
,
1060 generic_val_print_ptr (type
, 0, stream
,
1065 case TYPE_CODE_RVALUE_REF
:
1066 generic_val_print_ref (type
, 0, stream
, recurse
,
1070 case TYPE_CODE_ENUM
:
1071 generic_val_print_enum (type
, 0, stream
,
1075 case TYPE_CODE_FLAGS
:
1076 generic_val_print_flags (type
, 0, stream
,
1080 case TYPE_CODE_FUNC
:
1081 case TYPE_CODE_METHOD
:
1082 generic_val_print_func (type
, 0, value_address (val
), stream
,
1086 case TYPE_CODE_BOOL
:
1087 generic_val_print_bool (type
, 0, stream
,
1088 val
, options
, decorations
);
1091 case TYPE_CODE_RANGE
:
1092 /* FIXME: create_static_range_type does not set the unsigned bit in a
1093 range type (I think it probably should copy it from the
1094 target type), so we won't print values which are too large to
1095 fit in a signed integer correctly. */
1096 /* FIXME: Doesn't handle ranges of enums correctly. (Can't just
1097 print with the target type, though, because the size of our
1098 type and the target type might differ). */
1103 generic_val_print_int (type
, 0, stream
,
1107 case TYPE_CODE_CHAR
:
1108 generic_val_print_char (type
, unresolved_type
, 0,
1109 stream
, val
, options
);
1113 case TYPE_CODE_DECFLOAT
:
1114 generic_val_print_float (type
, 0, stream
,
1118 case TYPE_CODE_VOID
:
1119 fputs_filtered (decorations
->void_name
, stream
);
1122 case TYPE_CODE_ERROR
:
1123 fprintf_filtered (stream
, "%s", TYPE_ERROR_NAME (type
));
1126 case TYPE_CODE_UNDEF
:
1127 /* This happens (without TYPE_STUB set) on systems which don't use
1128 dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
1129 and no complete type for struct foo in that file. */
1130 fprintf_styled (stream
, metadata_style
.style (), _("<incomplete type>"));
1133 case TYPE_CODE_COMPLEX
:
1134 generic_val_print_complex (type
, 0, stream
,
1135 val
, options
, decorations
);
1138 case TYPE_CODE_UNION
:
1139 case TYPE_CODE_STRUCT
:
1140 case TYPE_CODE_METHODPTR
:
1142 error (_("Unhandled type code %d in symbol table."),
1147 /* Helper function for val_print and common_val_print that does the
1148 work. Arguments are as to val_print, but FULL_VALUE, if given, is
1149 the value to be printed. */
1152 do_val_print (struct value
*full_value
,
1153 struct type
*type
, LONGEST embedded_offset
,
1154 CORE_ADDR address
, struct ui_file
*stream
, int recurse
,
1156 const struct value_print_options
*options
,
1157 const struct language_defn
*language
)
1160 struct value_print_options local_opts
= *options
;
1161 struct type
*real_type
= check_typedef (type
);
1163 if (local_opts
.prettyformat
== Val_prettyformat_default
)
1164 local_opts
.prettyformat
= (local_opts
.prettyformat_structs
1165 ? Val_prettyformat
: Val_no_prettyformat
);
1169 /* Ensure that the type is complete and not just a stub. If the type is
1170 only a stub and we can't find and substitute its complete type, then
1171 print appropriate string and return. */
1173 if (TYPE_STUB (real_type
))
1175 fprintf_styled (stream
, metadata_style
.style (), _("<incomplete type>"));
1179 if (!valprint_check_validity (stream
, real_type
, embedded_offset
, val
))
1184 ret
= apply_ext_lang_val_pretty_printer (type
, embedded_offset
,
1185 address
, stream
, recurse
,
1186 val
, options
, language
);
1191 /* Handle summary mode. If the value is a scalar, print it;
1192 otherwise, print an ellipsis. */
1193 if (options
->summary
&& !val_print_scalar_type_p (type
))
1195 fprintf_filtered (stream
, "...");
1199 /* If this value is too deep then don't print it. */
1200 if (!val_print_scalar_or_string_type_p (type
, language
)
1201 && val_print_check_max_depth (stream
, recurse
, options
, language
))
1206 if (full_value
!= nullptr && language
->la_value_print_inner
!= nullptr)
1207 language
->la_value_print_inner (full_value
, stream
, recurse
,
1210 language
->la_val_print (type
, embedded_offset
, address
,
1211 stream
, recurse
, val
,
1214 catch (const gdb_exception_error
&except
)
1216 fprintf_styled (stream
, metadata_style
.style (),
1217 _("<error reading variable>"));
1221 /* Print using the given LANGUAGE the data of type TYPE located at
1222 VAL's contents buffer + EMBEDDED_OFFSET (within GDB), which came
1223 from the inferior at address ADDRESS + EMBEDDED_OFFSET, onto
1224 stdio stream STREAM according to OPTIONS. VAL is the whole object
1225 that came from ADDRESS.
1227 The language printers will pass down an adjusted EMBEDDED_OFFSET to
1228 further helper subroutines as subfields of TYPE are printed. In
1229 such cases, VAL is passed down unadjusted, so
1230 that VAL can be queried for metadata about the contents data being
1231 printed, using EMBEDDED_OFFSET as an offset into VAL's contents
1232 buffer. For example: "has this field been optimized out", or "I'm
1233 printing an object while inspecting a traceframe; has this
1234 particular piece of data been collected?".
1236 RECURSE indicates the amount of indentation to supply before
1237 continuation lines; this amount is roughly twice the value of
1241 val_print (struct type
*type
, LONGEST embedded_offset
,
1242 CORE_ADDR address
, struct ui_file
*stream
, int recurse
,
1244 const struct value_print_options
*options
,
1245 const struct language_defn
*language
)
1247 do_val_print (nullptr, type
, embedded_offset
, address
, stream
,
1248 recurse
, val
, options
, language
);
1251 /* See valprint.h. */
1254 val_print_check_max_depth (struct ui_file
*stream
, int recurse
,
1255 const struct value_print_options
*options
,
1256 const struct language_defn
*language
)
1258 if (options
->max_depth
> -1 && recurse
>= options
->max_depth
)
1260 gdb_assert (language
->la_struct_too_deep_ellipsis
!= NULL
);
1261 fputs_filtered (language
->la_struct_too_deep_ellipsis
, stream
);
1268 /* Check whether the value VAL is printable. Return 1 if it is;
1269 return 0 and print an appropriate error message to STREAM according to
1270 OPTIONS if it is not. */
1273 value_check_printable (struct value
*val
, struct ui_file
*stream
,
1274 const struct value_print_options
*options
)
1278 fprintf_styled (stream
, metadata_style
.style (),
1279 _("<address of value unknown>"));
1283 if (value_entirely_optimized_out (val
))
1285 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1286 fprintf_filtered (stream
, "...");
1288 val_print_optimized_out (val
, stream
);
1292 if (value_entirely_unavailable (val
))
1294 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1295 fprintf_filtered (stream
, "...");
1297 val_print_unavailable (stream
);
1301 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_INTERNAL_FUNCTION
)
1303 fprintf_styled (stream
, metadata_style
.style (),
1304 _("<internal function %s>"),
1305 value_internal_function_name (val
));
1309 if (type_not_associated (value_type (val
)))
1311 val_print_not_associated (stream
);
1315 if (type_not_allocated (value_type (val
)))
1317 val_print_not_allocated (stream
);
1324 /* Print using the given LANGUAGE the value VAL onto stream STREAM according
1327 This is a preferable interface to val_print, above, because it uses
1328 GDB's value mechanism. */
1331 common_val_print (struct value
*val
, struct ui_file
*stream
, int recurse
,
1332 const struct value_print_options
*options
,
1333 const struct language_defn
*language
)
1335 if (!value_check_printable (val
, stream
, options
))
1338 if (language
->la_language
== language_ada
)
1339 /* The value might have a dynamic type, which would cause trouble
1340 below when trying to extract the value contents (since the value
1341 size is determined from the type size which is unknown). So
1342 get a fixed representation of our value. */
1343 val
= ada_to_fixed_value (val
);
1345 if (value_lazy (val
))
1346 value_fetch_lazy (val
);
1348 do_val_print (val
, value_type (val
),
1349 value_embedded_offset (val
), value_address (val
),
1351 val
, options
, language
);
1354 /* See valprint.h. */
1357 common_val_print_checked (struct value
*val
, struct ui_file
*stream
,
1359 const struct value_print_options
*options
,
1360 const struct language_defn
*language
)
1362 if (!value_check_printable (val
, stream
, options
))
1364 common_val_print (val
, stream
, recurse
, options
, language
);
1367 /* Print on stream STREAM the value VAL according to OPTIONS. The value
1368 is printed using the current_language syntax. */
1371 value_print (struct value
*val
, struct ui_file
*stream
,
1372 const struct value_print_options
*options
)
1374 scoped_value_mark free_values
;
1376 if (!value_check_printable (val
, stream
, options
))
1382 = apply_ext_lang_val_pretty_printer (value_type (val
),
1383 value_embedded_offset (val
),
1384 value_address (val
),
1386 val
, options
, current_language
);
1392 LA_VALUE_PRINT (val
, stream
, options
);
1396 val_print_type_code_flags (struct type
*type
, const gdb_byte
*valaddr
,
1397 struct ui_file
*stream
)
1399 ULONGEST val
= unpack_long (type
, valaddr
);
1400 int field
, nfields
= TYPE_NFIELDS (type
);
1401 struct gdbarch
*gdbarch
= get_type_arch (type
);
1402 struct type
*bool_type
= builtin_type (gdbarch
)->builtin_bool
;
1404 fputs_filtered ("[", stream
);
1405 for (field
= 0; field
< nfields
; field
++)
1407 if (TYPE_FIELD_NAME (type
, field
)[0] != '\0')
1409 struct type
*field_type
= TYPE_FIELD_TYPE (type
, field
);
1411 if (field_type
== bool_type
1412 /* We require boolean types here to be one bit wide. This is a
1413 problematic place to notify the user of an internal error
1414 though. Instead just fall through and print the field as an
1416 && TYPE_FIELD_BITSIZE (type
, field
) == 1)
1418 if (val
& ((ULONGEST
)1 << TYPE_FIELD_BITPOS (type
, field
)))
1421 styled_string (variable_name_style
.style (),
1422 TYPE_FIELD_NAME (type
, field
)));
1426 unsigned field_len
= TYPE_FIELD_BITSIZE (type
, field
);
1428 = val
>> (TYPE_FIELD_BITPOS (type
, field
) - field_len
+ 1);
1430 if (field_len
< sizeof (ULONGEST
) * TARGET_CHAR_BIT
)
1431 field_val
&= ((ULONGEST
) 1 << field_len
) - 1;
1432 fprintf_filtered (stream
, " %ps=",
1433 styled_string (variable_name_style
.style (),
1434 TYPE_FIELD_NAME (type
, field
)));
1435 if (TYPE_CODE (field_type
) == TYPE_CODE_ENUM
)
1436 generic_val_print_enum_1 (field_type
, field_val
, stream
);
1438 print_longest (stream
, 'd', 0, field_val
);
1442 fputs_filtered (" ]", stream
);
1445 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
1446 according to OPTIONS and SIZE on STREAM. Format i is not supported
1449 This is how the elements of an array or structure are printed
1453 val_print_scalar_formatted (struct type
*type
,
1454 LONGEST embedded_offset
,
1456 const struct value_print_options
*options
,
1458 struct ui_file
*stream
)
1460 struct gdbarch
*arch
= get_type_arch (type
);
1461 int unit_size
= gdbarch_addressable_memory_unit_size (arch
);
1463 gdb_assert (val
!= NULL
);
1465 /* If we get here with a string format, try again without it. Go
1466 all the way back to the language printers, which may call us
1468 if (options
->format
== 's')
1470 struct value_print_options opts
= *options
;
1473 val_print (type
, embedded_offset
, 0, stream
, 0, val
, &opts
,
1478 /* value_contents_for_printing fetches all VAL's contents. They are
1479 needed to check whether VAL is optimized-out or unavailable
1481 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
1483 /* A scalar object that does not have all bits available can't be
1484 printed, because all bits contribute to its representation. */
1485 if (value_bits_any_optimized_out (val
,
1486 TARGET_CHAR_BIT
* embedded_offset
,
1487 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
1488 val_print_optimized_out (val
, stream
);
1489 else if (!value_bytes_available (val
, embedded_offset
, TYPE_LENGTH (type
)))
1490 val_print_unavailable (stream
);
1492 print_scalar_formatted (valaddr
+ embedded_offset
* unit_size
, type
,
1493 options
, size
, stream
);
1496 /* See valprint.h. */
1499 value_print_scalar_formatted (struct value
*val
,
1500 const struct value_print_options
*options
,
1502 struct ui_file
*stream
)
1504 struct type
*type
= check_typedef (value_type (val
));
1506 gdb_assert (val
!= NULL
);
1508 /* If we get here with a string format, try again without it. Go
1509 all the way back to the language printers, which may call us
1511 if (options
->format
== 's')
1513 struct value_print_options opts
= *options
;
1516 common_val_print (val
, stream
, 0, &opts
, current_language
);
1520 /* value_contents_for_printing fetches all VAL's contents. They are
1521 needed to check whether VAL is optimized-out or unavailable
1523 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
1525 /* A scalar object that does not have all bits available can't be
1526 printed, because all bits contribute to its representation. */
1527 if (value_bits_any_optimized_out (val
, 0,
1528 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
1529 val_print_optimized_out (val
, stream
);
1530 else if (!value_bytes_available (val
, 0, TYPE_LENGTH (type
)))
1531 val_print_unavailable (stream
);
1533 print_scalar_formatted (valaddr
, type
, options
, size
, stream
);
1536 /* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g.
1537 The raison d'etre of this function is to consolidate printing of
1538 LONG_LONG's into this one function. The format chars b,h,w,g are
1539 from print_scalar_formatted(). Numbers are printed using C
1542 USE_C_FORMAT means to use C format in all cases. Without it,
1543 'o' and 'x' format do not include the standard C radix prefix
1546 Hilfinger/2004-09-09: USE_C_FORMAT was originally called USE_LOCAL
1547 and was intended to request formatting according to the current
1548 language and would be used for most integers that GDB prints. The
1549 exceptional cases were things like protocols where the format of
1550 the integer is a protocol thing, not a user-visible thing). The
1551 parameter remains to preserve the information of what things might
1552 be printed with language-specific format, should we ever resurrect
1556 print_longest (struct ui_file
*stream
, int format
, int use_c_format
,
1564 val
= int_string (val_long
, 10, 1, 0, 1); break;
1566 val
= int_string (val_long
, 10, 0, 0, 1); break;
1568 val
= int_string (val_long
, 16, 0, 0, use_c_format
); break;
1570 val
= int_string (val_long
, 16, 0, 2, 1); break;
1572 val
= int_string (val_long
, 16, 0, 4, 1); break;
1574 val
= int_string (val_long
, 16, 0, 8, 1); break;
1576 val
= int_string (val_long
, 16, 0, 16, 1); break;
1579 val
= int_string (val_long
, 8, 0, 0, use_c_format
); break;
1581 internal_error (__FILE__
, __LINE__
,
1582 _("failed internal consistency check"));
1584 fputs_filtered (val
, stream
);
1587 /* This used to be a macro, but I don't think it is called often enough
1588 to merit such treatment. */
1589 /* Convert a LONGEST to an int. This is used in contexts (e.g. number of
1590 arguments to a function, number in a value history, register number, etc.)
1591 where the value must not be larger than can fit in an int. */
1594 longest_to_int (LONGEST arg
)
1596 /* Let the compiler do the work. */
1597 int rtnval
= (int) arg
;
1599 /* Check for overflows or underflows. */
1600 if (sizeof (LONGEST
) > sizeof (int))
1604 error (_("Value out of range."));
1610 /* Print a floating point value of floating-point type TYPE,
1611 pointed to in GDB by VALADDR, on STREAM. */
1614 print_floating (const gdb_byte
*valaddr
, struct type
*type
,
1615 struct ui_file
*stream
)
1617 std::string str
= target_float_to_string (valaddr
, type
);
1618 fputs_filtered (str
.c_str (), stream
);
1622 print_binary_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1623 unsigned len
, enum bfd_endian byte_order
, bool zero_pad
)
1628 bool seen_a_one
= false;
1630 /* Declared "int" so it will be signed.
1631 This ensures that right shift will shift in zeros. */
1633 const int mask
= 0x080;
1635 if (byte_order
== BFD_ENDIAN_BIG
)
1641 /* Every byte has 8 binary characters; peel off
1642 and print from the MSB end. */
1644 for (i
= 0; i
< (HOST_CHAR_BIT
* sizeof (*p
)); i
++)
1646 if (*p
& (mask
>> i
))
1651 if (zero_pad
|| seen_a_one
|| b
== '1')
1652 fputc_filtered (b
, stream
);
1660 for (p
= valaddr
+ len
- 1;
1664 for (i
= 0; i
< (HOST_CHAR_BIT
* sizeof (*p
)); i
++)
1666 if (*p
& (mask
>> i
))
1671 if (zero_pad
|| seen_a_one
|| b
== '1')
1672 fputc_filtered (b
, stream
);
1679 /* When not zero-padding, ensure that something is printed when the
1681 if (!zero_pad
&& !seen_a_one
)
1682 fputc_filtered ('0', stream
);
1685 /* A helper for print_octal_chars that emits a single octal digit,
1686 optionally suppressing it if is zero and updating SEEN_A_ONE. */
1689 emit_octal_digit (struct ui_file
*stream
, bool *seen_a_one
, int digit
)
1691 if (*seen_a_one
|| digit
!= 0)
1692 fprintf_filtered (stream
, "%o", digit
);
1697 /* VALADDR points to an integer of LEN bytes.
1698 Print it in octal on stream or format it in buf. */
1701 print_octal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1702 unsigned len
, enum bfd_endian byte_order
)
1705 unsigned char octa1
, octa2
, octa3
, carry
;
1708 /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track
1709 * the extra bits, which cycle every three bytes:
1711 * Byte side: 0 1 2 3
1713 * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 |
1715 * Octal side: 0 1 carry 3 4 carry ...
1717 * Cycle number: 0 1 2
1719 * But of course we are printing from the high side, so we have to
1720 * figure out where in the cycle we are so that we end up with no
1721 * left over bits at the end.
1723 #define BITS_IN_OCTAL 3
1724 #define HIGH_ZERO 0340
1725 #define LOW_ZERO 0034
1726 #define CARRY_ZERO 0003
1727 static_assert (HIGH_ZERO
+ LOW_ZERO
+ CARRY_ZERO
== 0xff,
1728 "cycle zero constants are wrong");
1729 #define HIGH_ONE 0200
1730 #define MID_ONE 0160
1731 #define LOW_ONE 0016
1732 #define CARRY_ONE 0001
1733 static_assert (HIGH_ONE
+ MID_ONE
+ LOW_ONE
+ CARRY_ONE
== 0xff,
1734 "cycle one constants are wrong");
1735 #define HIGH_TWO 0300
1736 #define MID_TWO 0070
1737 #define LOW_TWO 0007
1738 static_assert (HIGH_TWO
+ MID_TWO
+ LOW_TWO
== 0xff,
1739 "cycle two constants are wrong");
1741 /* For 32 we start in cycle 2, with two bits and one bit carry;
1742 for 64 in cycle in cycle 1, with one bit and a two bit carry. */
1744 cycle
= (len
* HOST_CHAR_BIT
) % BITS_IN_OCTAL
;
1747 fputs_filtered ("0", stream
);
1748 bool seen_a_one
= false;
1749 if (byte_order
== BFD_ENDIAN_BIG
)
1758 /* No carry in, carry out two bits. */
1760 octa1
= (HIGH_ZERO
& *p
) >> 5;
1761 octa2
= (LOW_ZERO
& *p
) >> 2;
1762 carry
= (CARRY_ZERO
& *p
);
1763 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1764 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1768 /* Carry in two bits, carry out one bit. */
1770 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1771 octa2
= (MID_ONE
& *p
) >> 4;
1772 octa3
= (LOW_ONE
& *p
) >> 1;
1773 carry
= (CARRY_ONE
& *p
);
1774 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1775 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1776 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1780 /* Carry in one bit, no carry out. */
1782 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1783 octa2
= (MID_TWO
& *p
) >> 3;
1784 octa3
= (LOW_TWO
& *p
);
1786 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1787 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1788 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1792 error (_("Internal error in octal conversion;"));
1796 cycle
= cycle
% BITS_IN_OCTAL
;
1801 for (p
= valaddr
+ len
- 1;
1808 /* Carry out, no carry in */
1810 octa1
= (HIGH_ZERO
& *p
) >> 5;
1811 octa2
= (LOW_ZERO
& *p
) >> 2;
1812 carry
= (CARRY_ZERO
& *p
);
1813 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1814 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1818 /* Carry in, carry out */
1820 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1821 octa2
= (MID_ONE
& *p
) >> 4;
1822 octa3
= (LOW_ONE
& *p
) >> 1;
1823 carry
= (CARRY_ONE
& *p
);
1824 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1825 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1826 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1830 /* Carry in, no carry out */
1832 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1833 octa2
= (MID_TWO
& *p
) >> 3;
1834 octa3
= (LOW_TWO
& *p
);
1836 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1837 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1838 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1842 error (_("Internal error in octal conversion;"));
1846 cycle
= cycle
% BITS_IN_OCTAL
;
1852 /* Possibly negate the integer represented by BYTES. It contains LEN
1853 bytes in the specified byte order. If the integer is negative,
1854 copy it into OUT_VEC, negate it, and return true. Otherwise, do
1855 nothing and return false. */
1858 maybe_negate_by_bytes (const gdb_byte
*bytes
, unsigned len
,
1859 enum bfd_endian byte_order
,
1860 gdb::byte_vector
*out_vec
)
1863 gdb_assert (len
> 0);
1864 if (byte_order
== BFD_ENDIAN_BIG
)
1865 sign_byte
= bytes
[0];
1867 sign_byte
= bytes
[len
- 1];
1868 if ((sign_byte
& 0x80) == 0)
1871 out_vec
->resize (len
);
1873 /* Compute -x == 1 + ~x. */
1874 if (byte_order
== BFD_ENDIAN_LITTLE
)
1877 for (unsigned i
= 0; i
< len
; ++i
)
1879 unsigned tem
= (0xff & ~bytes
[i
]) + carry
;
1880 (*out_vec
)[i
] = tem
& 0xff;
1887 for (unsigned i
= len
; i
> 0; --i
)
1889 unsigned tem
= (0xff & ~bytes
[i
- 1]) + carry
;
1890 (*out_vec
)[i
- 1] = tem
& 0xff;
1898 /* VALADDR points to an integer of LEN bytes.
1899 Print it in decimal on stream or format it in buf. */
1902 print_decimal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1903 unsigned len
, bool is_signed
,
1904 enum bfd_endian byte_order
)
1907 #define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */
1908 #define CARRY_LEFT( x ) ((x) % TEN)
1909 #define SHIFT( x ) ((x) << 4)
1910 #define LOW_NIBBLE( x ) ( (x) & 0x00F)
1911 #define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4)
1916 int i
, j
, decimal_digits
;
1920 gdb::byte_vector negated_bytes
;
1922 && maybe_negate_by_bytes (valaddr
, len
, byte_order
, &negated_bytes
))
1924 fputs_filtered ("-", stream
);
1925 valaddr
= negated_bytes
.data ();
1928 /* Base-ten number is less than twice as many digits
1929 as the base 16 number, which is 2 digits per byte. */
1931 decimal_len
= len
* 2 * 2;
1932 std::vector
<unsigned char> digits (decimal_len
, 0);
1934 /* Ok, we have an unknown number of bytes of data to be printed in
1937 * Given a hex number (in nibbles) as XYZ, we start by taking X and
1938 * decimalizing it as "x1 x2" in two decimal nibbles. Then we multiply
1939 * the nibbles by 16, add Y and re-decimalize. Repeat with Z.
1941 * The trick is that "digits" holds a base-10 number, but sometimes
1942 * the individual digits are > 10.
1944 * Outer loop is per nibble (hex digit) of input, from MSD end to
1947 decimal_digits
= 0; /* Number of decimal digits so far */
1948 p
= (byte_order
== BFD_ENDIAN_BIG
) ? valaddr
: valaddr
+ len
- 1;
1950 while ((byte_order
== BFD_ENDIAN_BIG
) ? (p
< valaddr
+ len
) : (p
>= valaddr
))
1953 * Multiply current base-ten number by 16 in place.
1954 * Each digit was between 0 and 9, now is between
1957 for (j
= 0; j
< decimal_digits
; j
++)
1959 digits
[j
] = SHIFT (digits
[j
]);
1962 /* Take the next nibble off the input and add it to what
1963 * we've got in the LSB position. Bottom 'digit' is now
1964 * between 0 and 159.
1966 * "flip" is used to run this loop twice for each byte.
1970 /* Take top nibble. */
1972 digits
[0] += HIGH_NIBBLE (*p
);
1977 /* Take low nibble and bump our pointer "p". */
1979 digits
[0] += LOW_NIBBLE (*p
);
1980 if (byte_order
== BFD_ENDIAN_BIG
)
1987 /* Re-decimalize. We have to do this often enough
1988 * that we don't overflow, but once per nibble is
1989 * overkill. Easier this way, though. Note that the
1990 * carry is often larger than 10 (e.g. max initial
1991 * carry out of lowest nibble is 15, could bubble all
1992 * the way up greater than 10). So we have to do
1993 * the carrying beyond the last current digit.
1996 for (j
= 0; j
< decimal_len
- 1; j
++)
2000 /* "/" won't handle an unsigned char with
2001 * a value that if signed would be negative.
2002 * So extend to longword int via "dummy".
2005 carry
= CARRY_OUT (dummy
);
2006 digits
[j
] = CARRY_LEFT (dummy
);
2008 if (j
>= decimal_digits
&& carry
== 0)
2011 * All higher digits are 0 and we
2012 * no longer have a carry.
2014 * Note: "j" is 0-based, "decimal_digits" is
2017 decimal_digits
= j
+ 1;
2023 /* Ok, now "digits" is the decimal representation, with
2024 the "decimal_digits" actual digits. Print! */
2026 for (i
= decimal_digits
- 1; i
> 0 && digits
[i
] == 0; --i
)
2031 fprintf_filtered (stream
, "%1d", digits
[i
]);
2035 /* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */
2038 print_hex_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
2039 unsigned len
, enum bfd_endian byte_order
,
2044 fputs_filtered ("0x", stream
);
2045 if (byte_order
== BFD_ENDIAN_BIG
)
2051 /* Strip leading 0 bytes, but be sure to leave at least a
2052 single byte at the end. */
2053 for (; p
< valaddr
+ len
- 1 && !*p
; ++p
)
2057 const gdb_byte
*first
= p
;
2062 /* When not zero-padding, use a different format for the
2063 very first byte printed. */
2064 if (!zero_pad
&& p
== first
)
2065 fprintf_filtered (stream
, "%x", *p
);
2067 fprintf_filtered (stream
, "%02x", *p
);
2072 p
= valaddr
+ len
- 1;
2076 /* Strip leading 0 bytes, but be sure to leave at least a
2077 single byte at the end. */
2078 for (; p
>= valaddr
+ 1 && !*p
; --p
)
2082 const gdb_byte
*first
= p
;
2087 /* When not zero-padding, use a different format for the
2088 very first byte printed. */
2089 if (!zero_pad
&& p
== first
)
2090 fprintf_filtered (stream
, "%x", *p
);
2092 fprintf_filtered (stream
, "%02x", *p
);
2097 /* VALADDR points to a char integer of LEN bytes.
2098 Print it out in appropriate language form on stream.
2099 Omit any leading zero chars. */
2102 print_char_chars (struct ui_file
*stream
, struct type
*type
,
2103 const gdb_byte
*valaddr
,
2104 unsigned len
, enum bfd_endian byte_order
)
2108 if (byte_order
== BFD_ENDIAN_BIG
)
2111 while (p
< valaddr
+ len
- 1 && *p
== 0)
2114 while (p
< valaddr
+ len
)
2116 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
2122 p
= valaddr
+ len
- 1;
2123 while (p
> valaddr
&& *p
== 0)
2126 while (p
>= valaddr
)
2128 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
2134 /* Print function pointer with inferior address ADDRESS onto stdio
2138 print_function_pointer_address (const struct value_print_options
*options
,
2139 struct gdbarch
*gdbarch
,
2141 struct ui_file
*stream
)
2144 = gdbarch_convert_from_func_ptr_addr (gdbarch
, address
,
2145 current_top_target ());
2147 /* If the function pointer is represented by a description, print
2148 the address of the description. */
2149 if (options
->addressprint
&& func_addr
!= address
)
2151 fputs_filtered ("@", stream
);
2152 fputs_filtered (paddress (gdbarch
, address
), stream
);
2153 fputs_filtered (": ", stream
);
2155 print_address_demangle (options
, gdbarch
, func_addr
, stream
, demangle
);
2159 /* Print on STREAM using the given OPTIONS the index for the element
2160 at INDEX of an array whose index type is INDEX_TYPE. */
2163 maybe_print_array_index (struct type
*index_type
, LONGEST index
,
2164 struct ui_file
*stream
,
2165 const struct value_print_options
*options
)
2167 struct value
*index_value
;
2169 if (!options
->print_array_indexes
)
2172 index_value
= value_from_longest (index_type
, index
);
2174 LA_PRINT_ARRAY_INDEX (index_value
, stream
, options
);
2177 /* Called by various <lang>_val_print routines to print elements of an
2178 array in the form "<elem1>, <elem2>, <elem3>, ...".
2180 (FIXME?) Assumes array element separator is a comma, which is correct
2181 for all languages currently handled.
2182 (FIXME?) Some languages have a notation for repeated array elements,
2183 perhaps we should try to use that notation when appropriate. */
2186 val_print_array_elements (struct type
*type
,
2187 LONGEST embedded_offset
,
2188 CORE_ADDR address
, struct ui_file
*stream
,
2191 const struct value_print_options
*options
,
2194 unsigned int things_printed
= 0;
2196 struct type
*elttype
, *index_type
, *base_index_type
;
2198 /* Position of the array element we are examining to see
2199 whether it is repeated. */
2201 /* Number of repetitions we have detected so far. */
2203 LONGEST low_bound
, high_bound
;
2204 LONGEST low_pos
, high_pos
;
2206 elttype
= TYPE_TARGET_TYPE (type
);
2207 eltlen
= type_length_units (check_typedef (elttype
));
2208 index_type
= TYPE_INDEX_TYPE (type
);
2210 if (get_array_bounds (type
, &low_bound
, &high_bound
))
2212 if (TYPE_CODE (index_type
) == TYPE_CODE_RANGE
)
2213 base_index_type
= TYPE_TARGET_TYPE (index_type
);
2215 base_index_type
= index_type
;
2217 /* Non-contiguous enumerations types can by used as index types
2218 in some languages (e.g. Ada). In this case, the array length
2219 shall be computed from the positions of the first and last
2220 literal in the enumeration type, and not from the values
2221 of these literals. */
2222 if (!discrete_position (base_index_type
, low_bound
, &low_pos
)
2223 || !discrete_position (base_index_type
, high_bound
, &high_pos
))
2225 warning (_("unable to get positions in array, use bounds instead"));
2226 low_pos
= low_bound
;
2227 high_pos
= high_bound
;
2230 /* The array length should normally be HIGH_POS - LOW_POS + 1.
2231 But we have to be a little extra careful, because some languages
2232 such as Ada allow LOW_POS to be greater than HIGH_POS for
2233 empty arrays. In that situation, the array length is just zero,
2235 if (low_pos
> high_pos
)
2238 len
= high_pos
- low_pos
+ 1;
2242 warning (_("unable to get bounds of array, assuming null array"));
2247 annotate_array_section_begin (i
, elttype
);
2249 for (; i
< len
&& things_printed
< options
->print_max
; i
++)
2253 if (options
->prettyformat_arrays
)
2255 fprintf_filtered (stream
, ",\n");
2256 print_spaces_filtered (2 + 2 * recurse
, stream
);
2260 fprintf_filtered (stream
, ", ");
2263 wrap_here (n_spaces (2 + 2 * recurse
));
2264 maybe_print_array_index (index_type
, i
+ low_bound
,
2269 /* Only check for reps if repeat_count_threshold is not set to
2270 UINT_MAX (unlimited). */
2271 if (options
->repeat_count_threshold
< UINT_MAX
)
2274 && value_contents_eq (val
,
2275 embedded_offset
+ i
* eltlen
,
2286 if (reps
> options
->repeat_count_threshold
)
2288 val_print (elttype
, embedded_offset
+ i
* eltlen
,
2289 address
, stream
, recurse
+ 1, val
, options
,
2291 annotate_elt_rep (reps
);
2292 fprintf_filtered (stream
, " %p[<repeats %u times>%p]",
2293 metadata_style
.style ().ptr (), reps
, nullptr);
2294 annotate_elt_rep_end ();
2297 things_printed
+= options
->repeat_count_threshold
;
2301 val_print (elttype
, embedded_offset
+ i
* eltlen
,
2303 stream
, recurse
+ 1, val
, options
, current_language
);
2308 annotate_array_section_end ();
2311 fprintf_filtered (stream
, "...");
2315 /* See valprint.h. */
2318 value_print_array_elements (struct value
*val
, struct ui_file
*stream
,
2320 const struct value_print_options
*options
,
2323 unsigned int things_printed
= 0;
2325 struct type
*elttype
, *index_type
, *base_index_type
;
2327 /* Position of the array element we are examining to see
2328 whether it is repeated. */
2330 /* Number of repetitions we have detected so far. */
2332 LONGEST low_bound
, high_bound
;
2333 LONGEST low_pos
, high_pos
;
2335 struct type
*type
= check_typedef (value_type (val
));
2337 elttype
= TYPE_TARGET_TYPE (type
);
2338 eltlen
= type_length_units (check_typedef (elttype
));
2339 index_type
= TYPE_INDEX_TYPE (type
);
2341 if (get_array_bounds (type
, &low_bound
, &high_bound
))
2343 if (TYPE_CODE (index_type
) == TYPE_CODE_RANGE
)
2344 base_index_type
= TYPE_TARGET_TYPE (index_type
);
2346 base_index_type
= index_type
;
2348 /* Non-contiguous enumerations types can by used as index types
2349 in some languages (e.g. Ada). In this case, the array length
2350 shall be computed from the positions of the first and last
2351 literal in the enumeration type, and not from the values
2352 of these literals. */
2353 if (!discrete_position (base_index_type
, low_bound
, &low_pos
)
2354 || !discrete_position (base_index_type
, high_bound
, &high_pos
))
2356 warning (_("unable to get positions in array, use bounds instead"));
2357 low_pos
= low_bound
;
2358 high_pos
= high_bound
;
2361 /* The array length should normally be HIGH_POS - LOW_POS + 1.
2362 But we have to be a little extra careful, because some languages
2363 such as Ada allow LOW_POS to be greater than HIGH_POS for
2364 empty arrays. In that situation, the array length is just zero,
2366 if (low_pos
> high_pos
)
2369 len
= high_pos
- low_pos
+ 1;
2373 warning (_("unable to get bounds of array, assuming null array"));
2378 annotate_array_section_begin (i
, elttype
);
2380 for (; i
< len
&& things_printed
< options
->print_max
; i
++)
2382 scoped_value_mark free_values
;
2386 if (options
->prettyformat_arrays
)
2388 fprintf_filtered (stream
, ",\n");
2389 print_spaces_filtered (2 + 2 * recurse
, stream
);
2392 fprintf_filtered (stream
, ", ");
2394 wrap_here (n_spaces (2 + 2 * recurse
));
2395 maybe_print_array_index (index_type
, i
+ low_bound
,
2400 /* Only check for reps if repeat_count_threshold is not set to
2401 UINT_MAX (unlimited). */
2402 if (options
->repeat_count_threshold
< UINT_MAX
)
2405 && value_contents_eq (val
, i
* eltlen
,
2414 struct value
*element
= value_from_component (val
, elttype
, eltlen
* i
);
2415 common_val_print (element
, stream
, recurse
+ 1, options
,
2418 if (reps
> options
->repeat_count_threshold
)
2420 annotate_elt_rep (reps
);
2421 fprintf_filtered (stream
, " %p[<repeats %u times>%p]",
2422 metadata_style
.style ().ptr (), reps
, nullptr);
2423 annotate_elt_rep_end ();
2426 things_printed
+= options
->repeat_count_threshold
;
2434 annotate_array_section_end ();
2436 fprintf_filtered (stream
, "...");
2439 /* Read LEN bytes of target memory at address MEMADDR, placing the
2440 results in GDB's memory at MYADDR. Returns a count of the bytes
2441 actually read, and optionally a target_xfer_status value in the
2442 location pointed to by ERRPTR if ERRPTR is non-null. */
2444 /* FIXME: cagney/1999-10-14: Only used by val_print_string. Can this
2445 function be eliminated. */
2448 partial_memory_read (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
2449 int len
, int *errptr
)
2451 int nread
; /* Number of bytes actually read. */
2452 int errcode
; /* Error from last read. */
2454 /* First try a complete read. */
2455 errcode
= target_read_memory (memaddr
, myaddr
, len
);
2463 /* Loop, reading one byte at a time until we get as much as we can. */
2464 for (errcode
= 0, nread
= 0; len
> 0 && errcode
== 0; nread
++, len
--)
2466 errcode
= target_read_memory (memaddr
++, myaddr
++, 1);
2468 /* If an error, the last read was unsuccessful, so adjust count. */
2481 /* Read a string from the inferior, at ADDR, with LEN characters of
2482 WIDTH bytes each. Fetch at most FETCHLIMIT characters. BUFFER
2483 will be set to a newly allocated buffer containing the string, and
2484 BYTES_READ will be set to the number of bytes read. Returns 0 on
2485 success, or a target_xfer_status on failure.
2487 If LEN > 0, reads the lesser of LEN or FETCHLIMIT characters
2488 (including eventual NULs in the middle or end of the string).
2490 If LEN is -1, stops at the first null character (not necessarily
2491 the first null byte) up to a maximum of FETCHLIMIT characters. Set
2492 FETCHLIMIT to UINT_MAX to read as many characters as possible from
2495 Unless an exception is thrown, BUFFER will always be allocated, even on
2496 failure. In this case, some characters might have been read before the
2497 failure happened. Check BYTES_READ to recognize this situation.
2499 Note: There was a FIXME asking to make this code use target_read_string,
2500 but this function is more general (can read past null characters, up to
2501 given LEN). Besides, it is used much more often than target_read_string
2502 so it is more tested. Perhaps callers of target_read_string should use
2503 this function instead? */
2506 read_string (CORE_ADDR addr
, int len
, int width
, unsigned int fetchlimit
,
2507 enum bfd_endian byte_order
, gdb::unique_xmalloc_ptr
<gdb_byte
> *buffer
,
2510 int errcode
; /* Errno returned from bad reads. */
2511 unsigned int nfetch
; /* Chars to fetch / chars fetched. */
2512 gdb_byte
*bufptr
; /* Pointer to next available byte in
2515 /* Loop until we either have all the characters, or we encounter
2516 some error, such as bumping into the end of the address space. */
2518 buffer
->reset (nullptr);
2522 /* We want fetchlimit chars, so we might as well read them all in
2524 unsigned int fetchlen
= std::min ((unsigned) len
, fetchlimit
);
2526 buffer
->reset ((gdb_byte
*) xmalloc (fetchlen
* width
));
2527 bufptr
= buffer
->get ();
2529 nfetch
= partial_memory_read (addr
, bufptr
, fetchlen
* width
, &errcode
)
2531 addr
+= nfetch
* width
;
2532 bufptr
+= nfetch
* width
;
2536 unsigned long bufsize
= 0;
2537 unsigned int chunksize
; /* Size of each fetch, in chars. */
2538 int found_nul
; /* Non-zero if we found the nul char. */
2539 gdb_byte
*limit
; /* First location past end of fetch buffer. */
2542 /* We are looking for a NUL terminator to end the fetching, so we
2543 might as well read in blocks that are large enough to be efficient,
2544 but not so large as to be slow if fetchlimit happens to be large.
2545 So we choose the minimum of 8 and fetchlimit. We used to use 200
2546 instead of 8 but 200 is way too big for remote debugging over a
2548 chunksize
= std::min (8u, fetchlimit
);
2553 nfetch
= std::min ((unsigned long) chunksize
, fetchlimit
- bufsize
);
2555 if (*buffer
== NULL
)
2556 buffer
->reset ((gdb_byte
*) xmalloc (nfetch
* width
));
2558 buffer
->reset ((gdb_byte
*) xrealloc (buffer
->release (),
2559 (nfetch
+ bufsize
) * width
));
2561 bufptr
= buffer
->get () + bufsize
* width
;
2564 /* Read as much as we can. */
2565 nfetch
= partial_memory_read (addr
, bufptr
, nfetch
* width
, &errcode
)
2568 /* Scan this chunk for the null character that terminates the string
2569 to print. If found, we don't need to fetch any more. Note
2570 that bufptr is explicitly left pointing at the next character
2571 after the null character, or at the next character after the end
2574 limit
= bufptr
+ nfetch
* width
;
2575 while (bufptr
< limit
)
2579 c
= extract_unsigned_integer (bufptr
, width
, byte_order
);
2584 /* We don't care about any error which happened after
2585 the NUL terminator. */
2592 while (errcode
== 0 /* no error */
2593 && bufptr
- buffer
->get () < fetchlimit
* width
/* no overrun */
2594 && !found_nul
); /* haven't found NUL yet */
2597 { /* Length of string is really 0! */
2598 /* We always allocate *buffer. */
2599 buffer
->reset ((gdb_byte
*) xmalloc (1));
2600 bufptr
= buffer
->get ();
2604 /* bufptr and addr now point immediately beyond the last byte which we
2605 consider part of the string (including a '\0' which ends the string). */
2606 *bytes_read
= bufptr
- buffer
->get ();
2613 /* Return true if print_wchar can display W without resorting to a
2614 numeric escape, false otherwise. */
2617 wchar_printable (gdb_wchar_t w
)
2619 return (gdb_iswprint (w
)
2620 || w
== LCST ('\a') || w
== LCST ('\b')
2621 || w
== LCST ('\f') || w
== LCST ('\n')
2622 || w
== LCST ('\r') || w
== LCST ('\t')
2623 || w
== LCST ('\v'));
2626 /* A helper function that converts the contents of STRING to wide
2627 characters and then appends them to OUTPUT. */
2630 append_string_as_wide (const char *string
,
2631 struct obstack
*output
)
2633 for (; *string
; ++string
)
2635 gdb_wchar_t w
= gdb_btowc (*string
);
2636 obstack_grow (output
, &w
, sizeof (gdb_wchar_t
));
2640 /* Print a wide character W to OUTPUT. ORIG is a pointer to the
2641 original (target) bytes representing the character, ORIG_LEN is the
2642 number of valid bytes. WIDTH is the number of bytes in a base
2643 characters of the type. OUTPUT is an obstack to which wide
2644 characters are emitted. QUOTER is a (narrow) character indicating
2645 the style of quotes surrounding the character to be printed.
2646 NEED_ESCAPE is an in/out flag which is used to track numeric
2647 escapes across calls. */
2650 print_wchar (gdb_wint_t w
, const gdb_byte
*orig
,
2651 int orig_len
, int width
,
2652 enum bfd_endian byte_order
,
2653 struct obstack
*output
,
2654 int quoter
, int *need_escapep
)
2656 int need_escape
= *need_escapep
;
2660 /* iswprint implementation on Windows returns 1 for tab character.
2661 In order to avoid different printout on this host, we explicitly
2662 use wchar_printable function. */
2666 obstack_grow_wstr (output
, LCST ("\\a"));
2669 obstack_grow_wstr (output
, LCST ("\\b"));
2672 obstack_grow_wstr (output
, LCST ("\\f"));
2675 obstack_grow_wstr (output
, LCST ("\\n"));
2678 obstack_grow_wstr (output
, LCST ("\\r"));
2681 obstack_grow_wstr (output
, LCST ("\\t"));
2684 obstack_grow_wstr (output
, LCST ("\\v"));
2688 if (wchar_printable (w
) && (!need_escape
|| (!gdb_iswdigit (w
)
2690 && w
!= LCST ('9'))))
2692 gdb_wchar_t wchar
= w
;
2694 if (w
== gdb_btowc (quoter
) || w
== LCST ('\\'))
2695 obstack_grow_wstr (output
, LCST ("\\"));
2696 obstack_grow (output
, &wchar
, sizeof (gdb_wchar_t
));
2702 for (i
= 0; i
+ width
<= orig_len
; i
+= width
)
2707 value
= extract_unsigned_integer (&orig
[i
], width
,
2709 /* If the value fits in 3 octal digits, print it that
2710 way. Otherwise, print it as a hex escape. */
2712 xsnprintf (octal
, sizeof (octal
), "\\%.3o",
2713 (int) (value
& 0777));
2715 xsnprintf (octal
, sizeof (octal
), "\\x%lx", (long) value
);
2716 append_string_as_wide (octal
, output
);
2718 /* If we somehow have extra bytes, print them now. */
2719 while (i
< orig_len
)
2723 xsnprintf (octal
, sizeof (octal
), "\\%.3o", orig
[i
] & 0xff);
2724 append_string_as_wide (octal
, output
);
2735 /* Print the character C on STREAM as part of the contents of a
2736 literal string whose delimiter is QUOTER. ENCODING names the
2740 generic_emit_char (int c
, struct type
*type
, struct ui_file
*stream
,
2741 int quoter
, const char *encoding
)
2743 enum bfd_endian byte_order
2744 = type_byte_order (type
);
2746 int need_escape
= 0;
2748 c_buf
= (gdb_byte
*) alloca (TYPE_LENGTH (type
));
2749 pack_long (c_buf
, type
, c
);
2751 wchar_iterator
iter (c_buf
, TYPE_LENGTH (type
), encoding
, TYPE_LENGTH (type
));
2753 /* This holds the printable form of the wchar_t data. */
2754 auto_obstack wchar_buf
;
2760 const gdb_byte
*buf
;
2762 int print_escape
= 1;
2763 enum wchar_iterate_result result
;
2765 num_chars
= iter
.iterate (&result
, &chars
, &buf
, &buflen
);
2770 /* If all characters are printable, print them. Otherwise,
2771 we're going to have to print an escape sequence. We
2772 check all characters because we want to print the target
2773 bytes in the escape sequence, and we don't know character
2774 boundaries there. */
2778 for (i
= 0; i
< num_chars
; ++i
)
2779 if (!wchar_printable (chars
[i
]))
2787 for (i
= 0; i
< num_chars
; ++i
)
2788 print_wchar (chars
[i
], buf
, buflen
,
2789 TYPE_LENGTH (type
), byte_order
,
2790 &wchar_buf
, quoter
, &need_escape
);
2794 /* This handles the NUM_CHARS == 0 case as well. */
2796 print_wchar (gdb_WEOF
, buf
, buflen
, TYPE_LENGTH (type
),
2797 byte_order
, &wchar_buf
, quoter
, &need_escape
);
2800 /* The output in the host encoding. */
2801 auto_obstack output
;
2803 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2804 (gdb_byte
*) obstack_base (&wchar_buf
),
2805 obstack_object_size (&wchar_buf
),
2806 sizeof (gdb_wchar_t
), &output
, translit_char
);
2807 obstack_1grow (&output
, '\0');
2809 fputs_filtered ((const char *) obstack_base (&output
), stream
);
2812 /* Return the repeat count of the next character/byte in ITER,
2813 storing the result in VEC. */
2816 count_next_character (wchar_iterator
*iter
,
2817 std::vector
<converted_character
> *vec
)
2819 struct converted_character
*current
;
2823 struct converted_character tmp
;
2827 = iter
->iterate (&tmp
.result
, &chars
, &tmp
.buf
, &tmp
.buflen
);
2828 if (tmp
.num_chars
> 0)
2830 gdb_assert (tmp
.num_chars
< MAX_WCHARS
);
2831 memcpy (tmp
.chars
, chars
, tmp
.num_chars
* sizeof (gdb_wchar_t
));
2833 vec
->push_back (tmp
);
2836 current
= &vec
->back ();
2838 /* Count repeated characters or bytes. */
2839 current
->repeat_count
= 1;
2840 if (current
->num_chars
== -1)
2848 struct converted_character d
;
2855 /* Get the next character. */
2856 d
.num_chars
= iter
->iterate (&d
.result
, &chars
, &d
.buf
, &d
.buflen
);
2858 /* If a character was successfully converted, save the character
2859 into the converted character. */
2860 if (d
.num_chars
> 0)
2862 gdb_assert (d
.num_chars
< MAX_WCHARS
);
2863 memcpy (d
.chars
, chars
, WCHAR_BUFLEN (d
.num_chars
));
2866 /* Determine if the current character is the same as this
2868 if (d
.num_chars
== current
->num_chars
&& d
.result
== current
->result
)
2870 /* There are two cases to consider:
2872 1) Equality of converted character (num_chars > 0)
2873 2) Equality of non-converted character (num_chars == 0) */
2874 if ((current
->num_chars
> 0
2875 && memcmp (current
->chars
, d
.chars
,
2876 WCHAR_BUFLEN (current
->num_chars
)) == 0)
2877 || (current
->num_chars
== 0
2878 && current
->buflen
== d
.buflen
2879 && memcmp (current
->buf
, d
.buf
, current
->buflen
) == 0))
2880 ++current
->repeat_count
;
2888 /* Push this next converted character onto the result vector. */
2889 repeat
= current
->repeat_count
;
2895 /* Print the characters in CHARS to the OBSTACK. QUOTE_CHAR is the quote
2896 character to use with string output. WIDTH is the size of the output
2897 character type. BYTE_ORDER is the target byte order. OPTIONS
2898 is the user's print options. */
2901 print_converted_chars_to_obstack (struct obstack
*obstack
,
2902 const std::vector
<converted_character
> &chars
,
2903 int quote_char
, int width
,
2904 enum bfd_endian byte_order
,
2905 const struct value_print_options
*options
)
2908 const converted_character
*elem
;
2909 enum {START
, SINGLE
, REPEAT
, INCOMPLETE
, FINISH
} state
, last
;
2910 gdb_wchar_t wide_quote_char
= gdb_btowc (quote_char
);
2911 int need_escape
= 0;
2913 /* Set the start state. */
2915 last
= state
= START
;
2923 /* Nothing to do. */
2930 /* We are outputting a single character
2931 (< options->repeat_count_threshold). */
2935 /* We were outputting some other type of content, so we
2936 must output and a comma and a quote. */
2938 obstack_grow_wstr (obstack
, LCST (", "));
2939 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2941 /* Output the character. */
2942 for (j
= 0; j
< elem
->repeat_count
; ++j
)
2944 if (elem
->result
== wchar_iterate_ok
)
2945 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2946 byte_order
, obstack
, quote_char
, &need_escape
);
2948 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2949 byte_order
, obstack
, quote_char
, &need_escape
);
2958 /* We are outputting a character with a repeat count
2959 greater than options->repeat_count_threshold. */
2963 /* We were outputting a single string. Terminate the
2965 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2968 obstack_grow_wstr (obstack
, LCST (", "));
2970 /* Output the character and repeat string. */
2971 obstack_grow_wstr (obstack
, LCST ("'"));
2972 if (elem
->result
== wchar_iterate_ok
)
2973 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2974 byte_order
, obstack
, quote_char
, &need_escape
);
2976 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2977 byte_order
, obstack
, quote_char
, &need_escape
);
2978 obstack_grow_wstr (obstack
, LCST ("'"));
2979 std::string s
= string_printf (_(" <repeats %u times>"),
2980 elem
->repeat_count
);
2981 for (j
= 0; s
[j
]; ++j
)
2983 gdb_wchar_t w
= gdb_btowc (s
[j
]);
2984 obstack_grow (obstack
, &w
, sizeof (gdb_wchar_t
));
2990 /* We are outputting an incomplete sequence. */
2993 /* If we were outputting a string of SINGLE characters,
2994 terminate the quote. */
2995 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2998 obstack_grow_wstr (obstack
, LCST (", "));
3000 /* Output the incomplete sequence string. */
3001 obstack_grow_wstr (obstack
, LCST ("<incomplete sequence "));
3002 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
, byte_order
,
3003 obstack
, 0, &need_escape
);
3004 obstack_grow_wstr (obstack
, LCST (">"));
3006 /* We do not attempt to output anything after this. */
3011 /* All done. If we were outputting a string of SINGLE
3012 characters, the string must be terminated. Otherwise,
3013 REPEAT and INCOMPLETE are always left properly terminated. */
3015 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
3020 /* Get the next element and state. */
3022 if (state
!= FINISH
)
3024 elem
= &chars
[idx
++];
3025 switch (elem
->result
)
3027 case wchar_iterate_ok
:
3028 case wchar_iterate_invalid
:
3029 if (elem
->repeat_count
> options
->repeat_count_threshold
)
3035 case wchar_iterate_incomplete
:
3039 case wchar_iterate_eof
:
3047 /* Print the character string STRING, printing at most LENGTH
3048 characters. LENGTH is -1 if the string is nul terminated. TYPE is
3049 the type of each character. OPTIONS holds the printing options;
3050 printing stops early if the number hits print_max; repeat counts
3051 are printed as appropriate. Print ellipses at the end if we had to
3052 stop before printing LENGTH characters, or if FORCE_ELLIPSES.
3053 QUOTE_CHAR is the character to print at each end of the string. If
3054 C_STYLE_TERMINATOR is true, and the last character is 0, then it is
3058 generic_printstr (struct ui_file
*stream
, struct type
*type
,
3059 const gdb_byte
*string
, unsigned int length
,
3060 const char *encoding
, int force_ellipses
,
3061 int quote_char
, int c_style_terminator
,
3062 const struct value_print_options
*options
)
3064 enum bfd_endian byte_order
= type_byte_order (type
);
3066 int width
= TYPE_LENGTH (type
);
3068 struct converted_character
*last
;
3072 unsigned long current_char
= 1;
3074 for (i
= 0; current_char
; ++i
)
3077 current_char
= extract_unsigned_integer (string
+ i
* width
,
3083 /* If the string was not truncated due to `set print elements', and
3084 the last byte of it is a null, we don't print that, in
3085 traditional C style. */
3086 if (c_style_terminator
3089 && (extract_unsigned_integer (string
+ (length
- 1) * width
,
3090 width
, byte_order
) == 0))
3095 fputs_filtered ("\"\"", stream
);
3099 /* Arrange to iterate over the characters, in wchar_t form. */
3100 wchar_iterator
iter (string
, length
* width
, encoding
, width
);
3101 std::vector
<converted_character
> converted_chars
;
3103 /* Convert characters until the string is over or the maximum
3104 number of printed characters has been reached. */
3106 while (i
< options
->print_max
)
3112 /* Grab the next character and repeat count. */
3113 r
= count_next_character (&iter
, &converted_chars
);
3115 /* If less than zero, the end of the input string was reached. */
3119 /* Otherwise, add the count to the total print count and get
3120 the next character. */
3124 /* Get the last element and determine if the entire string was
3126 last
= &converted_chars
.back ();
3127 finished
= (last
->result
== wchar_iterate_eof
);
3129 /* Ensure that CONVERTED_CHARS is terminated. */
3130 last
->result
= wchar_iterate_eof
;
3132 /* WCHAR_BUF is the obstack we use to represent the string in
3134 auto_obstack wchar_buf
;
3136 /* Print the output string to the obstack. */
3137 print_converted_chars_to_obstack (&wchar_buf
, converted_chars
, quote_char
,
3138 width
, byte_order
, options
);
3140 if (force_ellipses
|| !finished
)
3141 obstack_grow_wstr (&wchar_buf
, LCST ("..."));
3143 /* OUTPUT is where we collect `char's for printing. */
3144 auto_obstack output
;
3146 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
3147 (gdb_byte
*) obstack_base (&wchar_buf
),
3148 obstack_object_size (&wchar_buf
),
3149 sizeof (gdb_wchar_t
), &output
, translit_char
);
3150 obstack_1grow (&output
, '\0');
3152 fputs_filtered ((const char *) obstack_base (&output
), stream
);
3155 /* Print a string from the inferior, starting at ADDR and printing up to LEN
3156 characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing
3157 stops at the first null byte, otherwise printing proceeds (including null
3158 bytes) until either print_max or LEN characters have been printed,
3159 whichever is smaller. ENCODING is the name of the string's
3160 encoding. It can be NULL, in which case the target encoding is
3164 val_print_string (struct type
*elttype
, const char *encoding
,
3165 CORE_ADDR addr
, int len
,
3166 struct ui_file
*stream
,
3167 const struct value_print_options
*options
)
3169 int force_ellipsis
= 0; /* Force ellipsis to be printed if nonzero. */
3170 int err
; /* Non-zero if we got a bad read. */
3171 int found_nul
; /* Non-zero if we found the nul char. */
3172 unsigned int fetchlimit
; /* Maximum number of chars to print. */
3174 gdb::unique_xmalloc_ptr
<gdb_byte
> buffer
; /* Dynamically growable fetch buffer. */
3175 struct gdbarch
*gdbarch
= get_type_arch (elttype
);
3176 enum bfd_endian byte_order
= type_byte_order (elttype
);
3177 int width
= TYPE_LENGTH (elttype
);
3179 /* First we need to figure out the limit on the number of characters we are
3180 going to attempt to fetch and print. This is actually pretty simple. If
3181 LEN >= zero, then the limit is the minimum of LEN and print_max. If
3182 LEN is -1, then the limit is print_max. This is true regardless of
3183 whether print_max is zero, UINT_MAX (unlimited), or something in between,
3184 because finding the null byte (or available memory) is what actually
3185 limits the fetch. */
3187 fetchlimit
= (len
== -1 ? options
->print_max
: std::min ((unsigned) len
,
3188 options
->print_max
));
3190 err
= read_string (addr
, len
, width
, fetchlimit
, byte_order
,
3191 &buffer
, &bytes_read
);
3195 /* We now have either successfully filled the buffer to fetchlimit,
3196 or terminated early due to an error or finding a null char when
3199 /* Determine found_nul by looking at the last character read. */
3201 if (bytes_read
>= width
)
3202 found_nul
= extract_unsigned_integer (buffer
.get () + bytes_read
- width
,
3203 width
, byte_order
) == 0;
3204 if (len
== -1 && !found_nul
)
3208 /* We didn't find a NUL terminator we were looking for. Attempt
3209 to peek at the next character. If not successful, or it is not
3210 a null byte, then force ellipsis to be printed. */
3212 peekbuf
= (gdb_byte
*) alloca (width
);
3214 if (target_read_memory (addr
, peekbuf
, width
) == 0
3215 && extract_unsigned_integer (peekbuf
, width
, byte_order
) != 0)
3218 else if ((len
>= 0 && err
!= 0) || (len
> bytes_read
/ width
))
3220 /* Getting an error when we have a requested length, or fetching less
3221 than the number of characters actually requested, always make us
3226 /* If we get an error before fetching anything, don't print a string.
3227 But if we fetch something and then get an error, print the string
3228 and then the error message. */
3229 if (err
== 0 || bytes_read
> 0)
3231 LA_PRINT_STRING (stream
, elttype
, buffer
.get (), bytes_read
/ width
,
3232 encoding
, force_ellipsis
, options
);
3237 std::string str
= memory_error_message (TARGET_XFER_E_IO
, gdbarch
, addr
);
3239 fprintf_filtered (stream
, _("<error: %ps>"),
3240 styled_string (metadata_style
.style (),
3244 return (bytes_read
/ width
);
3247 /* Handle 'show print max-depth'. */
3250 show_print_max_depth (struct ui_file
*file
, int from_tty
,
3251 struct cmd_list_element
*c
, const char *value
)
3253 fprintf_filtered (file
, _("Maximum print depth is %s.\n"), value
);
3257 /* The 'set input-radix' command writes to this auxiliary variable.
3258 If the requested radix is valid, INPUT_RADIX is updated; otherwise,
3259 it is left unchanged. */
3261 static unsigned input_radix_1
= 10;
3263 /* Validate an input or output radix setting, and make sure the user
3264 knows what they really did here. Radix setting is confusing, e.g.
3265 setting the input radix to "10" never changes it! */
3268 set_input_radix (const char *args
, int from_tty
, struct cmd_list_element
*c
)
3270 set_input_radix_1 (from_tty
, input_radix_1
);
3274 set_input_radix_1 (int from_tty
, unsigned radix
)
3276 /* We don't currently disallow any input radix except 0 or 1, which don't
3277 make any mathematical sense. In theory, we can deal with any input
3278 radix greater than 1, even if we don't have unique digits for every
3279 value from 0 to radix-1, but in practice we lose on large radix values.
3280 We should either fix the lossage or restrict the radix range more.
3285 input_radix_1
= input_radix
;
3286 error (_("Nonsense input radix ``decimal %u''; input radix unchanged."),
3289 input_radix_1
= input_radix
= radix
;
3292 printf_filtered (_("Input radix now set to "
3293 "decimal %u, hex %x, octal %o.\n"),
3294 radix
, radix
, radix
);
3298 /* The 'set output-radix' command writes to this auxiliary variable.
3299 If the requested radix is valid, OUTPUT_RADIX is updated,
3300 otherwise, it is left unchanged. */
3302 static unsigned output_radix_1
= 10;
3305 set_output_radix (const char *args
, int from_tty
, struct cmd_list_element
*c
)
3307 set_output_radix_1 (from_tty
, output_radix_1
);
3311 set_output_radix_1 (int from_tty
, unsigned radix
)
3313 /* Validate the radix and disallow ones that we aren't prepared to
3314 handle correctly, leaving the radix unchanged. */
3318 user_print_options
.output_format
= 'x'; /* hex */
3321 user_print_options
.output_format
= 0; /* decimal */
3324 user_print_options
.output_format
= 'o'; /* octal */
3327 output_radix_1
= output_radix
;
3328 error (_("Unsupported output radix ``decimal %u''; "
3329 "output radix unchanged."),
3332 output_radix_1
= output_radix
= radix
;
3335 printf_filtered (_("Output radix now set to "
3336 "decimal %u, hex %x, octal %o.\n"),
3337 radix
, radix
, radix
);
3341 /* Set both the input and output radix at once. Try to set the output radix
3342 first, since it has the most restrictive range. An radix that is valid as
3343 an output radix is also valid as an input radix.
3345 It may be useful to have an unusual input radix. If the user wishes to
3346 set an input radix that is not valid as an output radix, he needs to use
3347 the 'set input-radix' command. */
3350 set_radix (const char *arg
, int from_tty
)
3354 radix
= (arg
== NULL
) ? 10 : parse_and_eval_long (arg
);
3355 set_output_radix_1 (0, radix
);
3356 set_input_radix_1 (0, radix
);
3359 printf_filtered (_("Input and output radices now set to "
3360 "decimal %u, hex %x, octal %o.\n"),
3361 radix
, radix
, radix
);
3365 /* Show both the input and output radices. */
3368 show_radix (const char *arg
, int from_tty
)
3372 if (input_radix
== output_radix
)
3374 printf_filtered (_("Input and output radices set to "
3375 "decimal %u, hex %x, octal %o.\n"),
3376 input_radix
, input_radix
, input_radix
);
3380 printf_filtered (_("Input radix set to decimal "
3381 "%u, hex %x, octal %o.\n"),
3382 input_radix
, input_radix
, input_radix
);
3383 printf_filtered (_("Output radix set to decimal "
3384 "%u, hex %x, octal %o.\n"),
3385 output_radix
, output_radix
, output_radix
);
3392 set_print (const char *arg
, int from_tty
)
3395 "\"set print\" must be followed by the name of a print subcommand.\n");
3396 help_list (setprintlist
, "set print ", all_commands
, gdb_stdout
);
3400 show_print (const char *args
, int from_tty
)
3402 cmd_show_list (showprintlist
, from_tty
, "");
3406 set_print_raw (const char *arg
, int from_tty
)
3409 "\"set print raw\" must be followed by the name of a \"print raw\" subcommand.\n");
3410 help_list (setprintrawlist
, "set print raw ", all_commands
, gdb_stdout
);
3414 show_print_raw (const char *args
, int from_tty
)
3416 cmd_show_list (showprintrawlist
, from_tty
, "");
3419 /* Controls printing of vtbl's. */
3421 show_vtblprint (struct ui_file
*file
, int from_tty
,
3422 struct cmd_list_element
*c
, const char *value
)
3424 fprintf_filtered (file
, _("\
3425 Printing of C++ virtual function tables is %s.\n"),
3429 /* Controls looking up an object's derived type using what we find in
3432 show_objectprint (struct ui_file
*file
, int from_tty
,
3433 struct cmd_list_element
*c
,
3436 fprintf_filtered (file
, _("\
3437 Printing of object's derived type based on vtable info is %s.\n"),
3442 show_static_field_print (struct ui_file
*file
, int from_tty
,
3443 struct cmd_list_element
*c
,
3446 fprintf_filtered (file
,
3447 _("Printing of C++ static members is %s.\n"),
3453 /* A couple typedefs to make writing the options a bit more
3455 using boolean_option_def
3456 = gdb::option::boolean_option_def
<value_print_options
>;
3457 using uinteger_option_def
3458 = gdb::option::uinteger_option_def
<value_print_options
>;
3459 using zuinteger_unlimited_option_def
3460 = gdb::option::zuinteger_unlimited_option_def
<value_print_options
>;
3462 /* Definitions of options for the "print" and "compile print"
3464 static const gdb::option::option_def value_print_option_defs
[] = {
3466 boolean_option_def
{
3468 [] (value_print_options
*opt
) { return &opt
->addressprint
; },
3469 show_addressprint
, /* show_cmd_cb */
3470 N_("Set printing of addresses."),
3471 N_("Show printing of addresses."),
3472 NULL
, /* help_doc */
3475 boolean_option_def
{
3477 [] (value_print_options
*opt
) { return &opt
->prettyformat_arrays
; },
3478 show_prettyformat_arrays
, /* show_cmd_cb */
3479 N_("Set pretty formatting of arrays."),
3480 N_("Show pretty formatting of arrays."),
3481 NULL
, /* help_doc */
3484 boolean_option_def
{
3486 [] (value_print_options
*opt
) { return &opt
->print_array_indexes
; },
3487 show_print_array_indexes
, /* show_cmd_cb */
3488 N_("Set printing of array indexes."),
3489 N_("Show printing of array indexes."),
3490 NULL
, /* help_doc */
3493 uinteger_option_def
{
3495 [] (value_print_options
*opt
) { return &opt
->print_max
; },
3496 show_print_max
, /* show_cmd_cb */
3497 N_("Set limit on string chars or array elements to print."),
3498 N_("Show limit on string chars or array elements to print."),
3499 N_("\"unlimited\" causes there to be no limit."),
3502 zuinteger_unlimited_option_def
{
3504 [] (value_print_options
*opt
) { return &opt
->max_depth
; },
3505 show_print_max_depth
, /* show_cmd_cb */
3506 N_("Set maximum print depth for nested structures, unions and arrays."),
3507 N_("Show maximum print depth for nested structures, unions, and arrays."),
3508 N_("When structures, unions, or arrays are nested beyond this depth then they\n\
3509 will be replaced with either '{...}' or '(...)' depending on the language.\n\
3510 Use \"unlimited\" to print the complete structure.")
3513 boolean_option_def
{
3515 [] (value_print_options
*opt
) { return &opt
->stop_print_at_null
; },
3516 show_stop_print_at_null
, /* show_cmd_cb */
3517 N_("Set printing of char arrays to stop at first null char."),
3518 N_("Show printing of char arrays to stop at first null char."),
3519 NULL
, /* help_doc */
3522 boolean_option_def
{
3524 [] (value_print_options
*opt
) { return &opt
->objectprint
; },
3525 show_objectprint
, /* show_cmd_cb */
3526 _("Set printing of C++ virtual function tables."),
3527 _("Show printing of C++ virtual function tables."),
3528 NULL
, /* help_doc */
3531 boolean_option_def
{
3533 [] (value_print_options
*opt
) { return &opt
->prettyformat_structs
; },
3534 show_prettyformat_structs
, /* show_cmd_cb */
3535 N_("Set pretty formatting of structures."),
3536 N_("Show pretty formatting of structures."),
3537 NULL
, /* help_doc */
3540 boolean_option_def
{
3542 [] (value_print_options
*opt
) { return &opt
->raw
; },
3543 NULL
, /* show_cmd_cb */
3544 N_("Set whether to print values in raw form."),
3545 N_("Show whether to print values in raw form."),
3546 N_("If set, values are printed in raw form, bypassing any\n\
3547 pretty-printers for that value.")
3550 uinteger_option_def
{
3552 [] (value_print_options
*opt
) { return &opt
->repeat_count_threshold
; },
3553 show_repeat_count_threshold
, /* show_cmd_cb */
3554 N_("Set threshold for repeated print elements."),
3555 N_("Show threshold for repeated print elements."),
3556 N_("\"unlimited\" causes all elements to be individually printed."),
3559 boolean_option_def
{
3561 [] (value_print_options
*opt
) { return &opt
->static_field_print
; },
3562 show_static_field_print
, /* show_cmd_cb */
3563 N_("Set printing of C++ static members."),
3564 N_("Show printing of C++ static members."),
3565 NULL
, /* help_doc */
3568 boolean_option_def
{
3570 [] (value_print_options
*opt
) { return &opt
->symbol_print
; },
3571 show_symbol_print
, /* show_cmd_cb */
3572 N_("Set printing of symbol names when printing pointers."),
3573 N_("Show printing of symbol names when printing pointers."),
3574 NULL
, /* help_doc */
3577 boolean_option_def
{
3579 [] (value_print_options
*opt
) { return &opt
->unionprint
; },
3580 show_unionprint
, /* show_cmd_cb */
3581 N_("Set printing of unions interior to structures."),
3582 N_("Show printing of unions interior to structures."),
3583 NULL
, /* help_doc */
3586 boolean_option_def
{
3588 [] (value_print_options
*opt
) { return &opt
->vtblprint
; },
3589 show_vtblprint
, /* show_cmd_cb */
3590 N_("Set printing of C++ virtual function tables."),
3591 N_("Show printing of C++ virtual function tables."),
3592 NULL
, /* help_doc */
3596 /* See valprint.h. */
3598 gdb::option::option_def_group
3599 make_value_print_options_def_group (value_print_options
*opts
)
3601 return {{value_print_option_defs
}, opts
};
3604 void _initialize_valprint ();
3606 _initialize_valprint ()
3608 cmd_list_element
*cmd
;
3610 add_prefix_cmd ("print", no_class
, set_print
,
3611 _("Generic command for setting how things print."),
3612 &setprintlist
, "set print ", 0, &setlist
);
3613 add_alias_cmd ("p", "print", no_class
, 1, &setlist
);
3614 /* Prefer set print to set prompt. */
3615 add_alias_cmd ("pr", "print", no_class
, 1, &setlist
);
3617 add_prefix_cmd ("print", no_class
, show_print
,
3618 _("Generic command for showing print settings."),
3619 &showprintlist
, "show print ", 0, &showlist
);
3620 add_alias_cmd ("p", "print", no_class
, 1, &showlist
);
3621 add_alias_cmd ("pr", "print", no_class
, 1, &showlist
);
3623 cmd
= add_prefix_cmd ("raw", no_class
, set_print_raw
,
3625 Generic command for setting what things to print in \"raw\" mode."),
3626 &setprintrawlist
, "set print raw ", 0,
3628 deprecate_cmd (cmd
, nullptr);
3630 cmd
= add_prefix_cmd ("raw", no_class
, show_print_raw
,
3631 _("Generic command for showing \"print raw\" settings."),
3632 &showprintrawlist
, "show print raw ", 0,
3634 deprecate_cmd (cmd
, nullptr);
3636 gdb::option::add_setshow_cmds_for_options
3637 (class_support
, &user_print_options
, value_print_option_defs
,
3638 &setprintlist
, &showprintlist
);
3640 add_setshow_zuinteger_cmd ("input-radix", class_support
, &input_radix_1
,
3642 Set default input radix for entering numbers."), _("\
3643 Show default input radix for entering numbers."), NULL
,
3646 &setlist
, &showlist
);
3648 add_setshow_zuinteger_cmd ("output-radix", class_support
, &output_radix_1
,
3650 Set default output radix for printing of values."), _("\
3651 Show default output radix for printing of values."), NULL
,
3654 &setlist
, &showlist
);
3656 /* The "set radix" and "show radix" commands are special in that
3657 they are like normal set and show commands but allow two normally
3658 independent variables to be either set or shown with a single
3659 command. So the usual deprecated_add_set_cmd() and [deleted]
3660 add_show_from_set() commands aren't really appropriate. */
3661 /* FIXME: i18n: With the new add_setshow_integer command, that is no
3662 longer true - show can display anything. */
3663 add_cmd ("radix", class_support
, set_radix
, _("\
3664 Set default input and output number radices.\n\
3665 Use 'set input-radix' or 'set output-radix' to independently set each.\n\
3666 Without an argument, sets both radices back to the default value of 10."),
3668 add_cmd ("radix", class_support
, show_radix
, _("\
3669 Show the default input and output number radices.\n\
3670 Use 'show input-radix' or 'show output-radix' to independently show each."),