1 /* Print values for GDB, the GNU debugger.
3 Copyright (C) 1986-2017 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 "floatformat.h"
33 #include "extension.h"
35 #include "gdb_obstack.h"
37 #include "typeprint.h"
40 #include "common/byte-vector.h"
42 /* Maximum number of wchars returned from wchar_iterate. */
45 /* A convenience macro to compute the size of a wchar_t buffer containing X
47 #define WCHAR_BUFLEN(X) ((X) * sizeof (gdb_wchar_t))
49 /* Character buffer size saved while iterating over wchars. */
50 #define WCHAR_BUFLEN_MAX WCHAR_BUFLEN (MAX_WCHARS)
52 /* A structure to encapsulate state information from iterated
53 character conversions. */
54 struct converted_character
56 /* The number of characters converted. */
59 /* The result of the conversion. See charset.h for more. */
60 enum wchar_iterate_result result
;
62 /* The (saved) converted character(s). */
63 gdb_wchar_t chars
[WCHAR_BUFLEN_MAX
];
65 /* The first converted target byte. */
68 /* The number of bytes converted. */
71 /* How many times this character(s) is repeated. */
75 typedef struct converted_character converted_character_d
;
76 DEF_VEC_O (converted_character_d
);
78 /* Command lists for set/show print raw. */
79 struct cmd_list_element
*setprintrawlist
;
80 struct cmd_list_element
*showprintrawlist
;
82 /* Prototypes for local functions */
84 static int partial_memory_read (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
85 int len
, int *errptr
);
87 static void show_print (char *, int);
89 static void set_print (char *, int);
91 static void set_radix (char *, int);
93 static void show_radix (char *, int);
95 static void set_input_radix (char *, int, struct cmd_list_element
*);
97 static void set_input_radix_1 (int, unsigned);
99 static void set_output_radix (char *, int, struct cmd_list_element
*);
101 static void set_output_radix_1 (int, unsigned);
103 static void val_print_type_code_flags (struct type
*type
,
104 const gdb_byte
*valaddr
,
105 struct ui_file
*stream
);
107 void _initialize_valprint (void);
109 #define PRINT_MAX_DEFAULT 200 /* Start print_max off at this value. */
111 struct value_print_options user_print_options
=
113 Val_prettyformat_default
, /* prettyformat */
114 0, /* prettyformat_arrays */
115 0, /* prettyformat_structs */
118 1, /* addressprint */
120 PRINT_MAX_DEFAULT
, /* print_max */
121 10, /* repeat_count_threshold */
122 0, /* output_format */
124 0, /* stop_print_at_null */
125 0, /* print_array_indexes */
127 1, /* static_field_print */
128 1, /* pascal_static_field_print */
134 /* Initialize *OPTS to be a copy of the user print options. */
136 get_user_print_options (struct value_print_options
*opts
)
138 *opts
= user_print_options
;
141 /* Initialize *OPTS to be a copy of the user print options, but with
142 pretty-formatting disabled. */
144 get_no_prettyformat_print_options (struct value_print_options
*opts
)
146 *opts
= user_print_options
;
147 opts
->prettyformat
= Val_no_prettyformat
;
150 /* Initialize *OPTS to be a copy of the user print options, but using
151 FORMAT as the formatting option. */
153 get_formatted_print_options (struct value_print_options
*opts
,
156 *opts
= user_print_options
;
157 opts
->format
= format
;
161 show_print_max (struct ui_file
*file
, int from_tty
,
162 struct cmd_list_element
*c
, const char *value
)
164 fprintf_filtered (file
,
165 _("Limit on string chars or array "
166 "elements to print is %s.\n"),
171 /* Default input and output radixes, and output format letter. */
173 unsigned input_radix
= 10;
175 show_input_radix (struct ui_file
*file
, int from_tty
,
176 struct cmd_list_element
*c
, const char *value
)
178 fprintf_filtered (file
,
179 _("Default input radix for entering numbers is %s.\n"),
183 unsigned output_radix
= 10;
185 show_output_radix (struct ui_file
*file
, int from_tty
,
186 struct cmd_list_element
*c
, const char *value
)
188 fprintf_filtered (file
,
189 _("Default output radix for printing of values is %s.\n"),
193 /* By default we print arrays without printing the index of each element in
194 the array. This behavior can be changed by setting PRINT_ARRAY_INDEXES. */
197 show_print_array_indexes (struct ui_file
*file
, int from_tty
,
198 struct cmd_list_element
*c
, const char *value
)
200 fprintf_filtered (file
, _("Printing of array indexes is %s.\n"), value
);
203 /* Print repeat counts if there are more than this many repetitions of an
204 element in an array. Referenced by the low level language dependent
208 show_repeat_count_threshold (struct ui_file
*file
, int from_tty
,
209 struct cmd_list_element
*c
, const char *value
)
211 fprintf_filtered (file
, _("Threshold for repeated print elements is %s.\n"),
215 /* If nonzero, stops printing of char arrays at first null. */
218 show_stop_print_at_null (struct ui_file
*file
, int from_tty
,
219 struct cmd_list_element
*c
, const char *value
)
221 fprintf_filtered (file
,
222 _("Printing of char arrays to stop "
223 "at first null char is %s.\n"),
227 /* Controls pretty printing of structures. */
230 show_prettyformat_structs (struct ui_file
*file
, int from_tty
,
231 struct cmd_list_element
*c
, const char *value
)
233 fprintf_filtered (file
, _("Pretty formatting of structures is %s.\n"), value
);
236 /* Controls pretty printing of arrays. */
239 show_prettyformat_arrays (struct ui_file
*file
, int from_tty
,
240 struct cmd_list_element
*c
, const char *value
)
242 fprintf_filtered (file
, _("Pretty formatting of arrays is %s.\n"), value
);
245 /* If nonzero, causes unions inside structures or other unions to be
249 show_unionprint (struct ui_file
*file
, int from_tty
,
250 struct cmd_list_element
*c
, const char *value
)
252 fprintf_filtered (file
,
253 _("Printing of unions interior to structures is %s.\n"),
257 /* If nonzero, causes machine addresses to be printed in certain contexts. */
260 show_addressprint (struct ui_file
*file
, int from_tty
,
261 struct cmd_list_element
*c
, const char *value
)
263 fprintf_filtered (file
, _("Printing of addresses is %s.\n"), value
);
267 show_symbol_print (struct ui_file
*file
, int from_tty
,
268 struct cmd_list_element
*c
, const char *value
)
270 fprintf_filtered (file
,
271 _("Printing of symbols when printing pointers is %s.\n"),
277 /* A helper function for val_print. When printing in "summary" mode,
278 we want to print scalar arguments, but not aggregate arguments.
279 This function distinguishes between the two. */
282 val_print_scalar_type_p (struct type
*type
)
284 type
= check_typedef (type
);
285 while (TYPE_IS_REFERENCE (type
))
287 type
= TYPE_TARGET_TYPE (type
);
288 type
= check_typedef (type
);
290 switch (TYPE_CODE (type
))
292 case TYPE_CODE_ARRAY
:
293 case TYPE_CODE_STRUCT
:
294 case TYPE_CODE_UNION
:
296 case TYPE_CODE_STRING
:
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_filtered (_("<synthetic pointer>"), stream
);
354 /* C++ references should be valid even if they're synthetic. */
358 if (!value_bytes_available (val
, embedded_offset
, TYPE_LENGTH (type
)))
360 val_print_unavailable (stream
);
369 val_print_optimized_out (const struct value
*val
, struct ui_file
*stream
)
371 if (val
!= NULL
&& value_lval_const (val
) == lval_register
)
372 val_print_not_saved (stream
);
374 fprintf_filtered (stream
, _("<optimized out>"));
378 val_print_not_saved (struct ui_file
*stream
)
380 fprintf_filtered (stream
, _("<not saved>"));
384 val_print_unavailable (struct ui_file
*stream
)
386 fprintf_filtered (stream
, _("<unavailable>"));
390 val_print_invalid_address (struct ui_file
*stream
)
392 fprintf_filtered (stream
, _("<invalid address>"));
395 /* Print a pointer based on the type of its target.
397 Arguments to this functions are roughly the same as those in
398 generic_val_print. A difference is that ADDRESS is the address to print,
399 with embedded_offset already added. ELTTYPE represents
400 the pointed type after check_typedef. */
403 print_unpacked_pointer (struct type
*type
, struct type
*elttype
,
404 CORE_ADDR address
, struct ui_file
*stream
,
405 const struct value_print_options
*options
)
407 struct gdbarch
*gdbarch
= get_type_arch (type
);
409 if (TYPE_CODE (elttype
) == TYPE_CODE_FUNC
)
411 /* Try to print what function it points to. */
412 print_function_pointer_address (options
, gdbarch
, address
, stream
);
416 if (options
->symbol_print
)
417 print_address_demangle (options
, gdbarch
, address
, stream
, demangle
);
418 else if (options
->addressprint
)
419 fputs_filtered (paddress (gdbarch
, address
), stream
);
422 /* generic_val_print helper for TYPE_CODE_ARRAY. */
425 generic_val_print_array (struct type
*type
,
426 int embedded_offset
, CORE_ADDR address
,
427 struct ui_file
*stream
, int recurse
,
428 struct value
*original_value
,
429 const struct value_print_options
*options
,
431 generic_val_print_decorations
*decorations
)
433 struct type
*unresolved_elttype
= TYPE_TARGET_TYPE (type
);
434 struct type
*elttype
= check_typedef (unresolved_elttype
);
436 if (TYPE_LENGTH (type
) > 0 && TYPE_LENGTH (unresolved_elttype
) > 0)
438 LONGEST low_bound
, high_bound
;
440 if (!get_array_bounds (type
, &low_bound
, &high_bound
))
441 error (_("Could not determine the array high bound"));
443 if (options
->prettyformat_arrays
)
445 print_spaces_filtered (2 + 2 * recurse
, stream
);
448 fputs_filtered (decorations
->array_start
, stream
);
449 val_print_array_elements (type
, embedded_offset
,
451 recurse
, original_value
, options
, 0);
452 fputs_filtered (decorations
->array_end
, stream
);
456 /* Array of unspecified length: treat like pointer to first elt. */
457 print_unpacked_pointer (type
, elttype
, address
+ embedded_offset
, stream
,
463 /* generic_val_print helper for TYPE_CODE_PTR. */
466 generic_val_print_ptr (struct type
*type
,
467 int embedded_offset
, struct ui_file
*stream
,
468 struct value
*original_value
,
469 const struct value_print_options
*options
)
471 struct gdbarch
*gdbarch
= get_type_arch (type
);
472 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
474 if (options
->format
&& options
->format
!= 's')
476 val_print_scalar_formatted (type
, embedded_offset
,
477 original_value
, options
, 0, stream
);
481 struct type
*unresolved_elttype
= TYPE_TARGET_TYPE(type
);
482 struct type
*elttype
= check_typedef (unresolved_elttype
);
483 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
484 CORE_ADDR addr
= unpack_pointer (type
,
485 valaddr
+ embedded_offset
* unit_size
);
487 print_unpacked_pointer (type
, elttype
, addr
, stream
, options
);
492 /* generic_val_print helper for TYPE_CODE_MEMBERPTR. */
495 generic_val_print_memberptr (struct type
*type
,
496 int embedded_offset
, struct ui_file
*stream
,
497 struct value
*original_value
,
498 const struct value_print_options
*options
)
500 val_print_scalar_formatted (type
, embedded_offset
,
501 original_value
, options
, 0, stream
);
504 /* Print '@' followed by the address contained in ADDRESS_BUFFER. */
507 print_ref_address (struct type
*type
, const gdb_byte
*address_buffer
,
508 int embedded_offset
, struct ui_file
*stream
)
510 struct gdbarch
*gdbarch
= get_type_arch (type
);
512 if (address_buffer
!= NULL
)
515 = extract_typed_address (address_buffer
+ embedded_offset
, type
);
517 fprintf_filtered (stream
, "@");
518 fputs_filtered (paddress (gdbarch
, address
), stream
);
520 /* Else: we have a non-addressable value, such as a DW_AT_const_value. */
523 /* If VAL is addressable, return the value contents buffer of a value that
524 represents a pointer to VAL. Otherwise return NULL. */
526 static const gdb_byte
*
527 get_value_addr_contents (struct value
*deref_val
)
529 gdb_assert (deref_val
!= NULL
);
531 if (value_lval_const (deref_val
) == lval_memory
)
532 return value_contents_for_printing_const (value_addr (deref_val
));
535 /* We have a non-addressable value, such as a DW_AT_const_value. */
540 /* generic_val_print helper for TYPE_CODE_{RVALUE_,}REF. */
543 generic_val_print_ref (struct type
*type
,
544 int embedded_offset
, struct ui_file
*stream
, int recurse
,
545 struct value
*original_value
,
546 const struct value_print_options
*options
)
548 struct type
*elttype
= check_typedef (TYPE_TARGET_TYPE (type
));
549 struct value
*deref_val
= NULL
;
550 const int value_is_synthetic
551 = value_bits_synthetic_pointer (original_value
,
552 TARGET_CHAR_BIT
* embedded_offset
,
553 TARGET_CHAR_BIT
* TYPE_LENGTH (type
));
554 const int must_coerce_ref
= ((options
->addressprint
&& value_is_synthetic
)
555 || options
->deref_ref
);
556 const int type_is_defined
= TYPE_CODE (elttype
) != TYPE_CODE_UNDEF
;
557 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
559 if (must_coerce_ref
&& type_is_defined
)
561 deref_val
= coerce_ref_if_computed (original_value
);
563 if (deref_val
!= NULL
)
565 /* More complicated computed references are not supported. */
566 gdb_assert (embedded_offset
== 0);
569 deref_val
= value_at (TYPE_TARGET_TYPE (type
),
570 unpack_pointer (type
, valaddr
+ embedded_offset
));
572 /* Else, original_value isn't a synthetic reference or we don't have to print
573 the reference's contents.
575 Notice that for references to TYPE_CODE_STRUCT, 'set print object on' will
576 cause original_value to be a not_lval instead of an lval_computed,
577 which will make value_bits_synthetic_pointer return false.
578 This happens because if options->objectprint is true, c_value_print will
579 overwrite original_value's contents with the result of coercing
580 the reference through value_addr, and then set its type back to
581 TYPE_CODE_REF. In that case we don't have to coerce the reference again;
582 we can simply treat it as non-synthetic and move on. */
584 if (options
->addressprint
)
586 const gdb_byte
*address
= (value_is_synthetic
&& type_is_defined
587 ? get_value_addr_contents (deref_val
)
590 print_ref_address (type
, address
, embedded_offset
, stream
);
592 if (options
->deref_ref
)
593 fputs_filtered (": ", stream
);
596 if (options
->deref_ref
)
599 common_val_print (deref_val
, stream
, recurse
, options
,
602 fputs_filtered ("???", stream
);
606 /* Helper function for generic_val_print_enum.
607 This is also used to print enums in TYPE_CODE_FLAGS values. */
610 generic_val_print_enum_1 (struct type
*type
, LONGEST val
,
611 struct ui_file
*stream
)
616 len
= TYPE_NFIELDS (type
);
617 for (i
= 0; i
< len
; i
++)
620 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
627 fputs_filtered (TYPE_FIELD_NAME (type
, i
), stream
);
629 else if (TYPE_FLAG_ENUM (type
))
633 /* We have a "flag" enum, so we try to decompose it into
634 pieces as appropriate. A flag enum has disjoint
635 constants by definition. */
636 fputs_filtered ("(", stream
);
637 for (i
= 0; i
< len
; ++i
)
641 if ((val
& TYPE_FIELD_ENUMVAL (type
, i
)) != 0)
644 fputs_filtered (" | ", stream
);
647 val
&= ~TYPE_FIELD_ENUMVAL (type
, i
);
648 fputs_filtered (TYPE_FIELD_NAME (type
, i
), stream
);
652 if (first
|| val
!= 0)
655 fputs_filtered (" | ", stream
);
656 fputs_filtered ("unknown: ", stream
);
657 print_longest (stream
, 'd', 0, val
);
660 fputs_filtered (")", stream
);
663 print_longest (stream
, 'd', 0, val
);
666 /* generic_val_print helper for TYPE_CODE_ENUM. */
669 generic_val_print_enum (struct type
*type
,
670 int embedded_offset
, struct ui_file
*stream
,
671 struct value
*original_value
,
672 const struct value_print_options
*options
)
675 struct gdbarch
*gdbarch
= get_type_arch (type
);
676 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
680 val_print_scalar_formatted (type
, embedded_offset
,
681 original_value
, options
, 0, stream
);
685 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
687 val
= unpack_long (type
, valaddr
+ embedded_offset
* unit_size
);
689 generic_val_print_enum_1 (type
, val
, stream
);
693 /* generic_val_print helper for TYPE_CODE_FLAGS. */
696 generic_val_print_flags (struct type
*type
,
697 int embedded_offset
, struct ui_file
*stream
,
698 struct value
*original_value
,
699 const struct value_print_options
*options
)
703 val_print_scalar_formatted (type
, embedded_offset
, original_value
,
707 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
709 val_print_type_code_flags (type
, valaddr
+ embedded_offset
, stream
);
713 /* generic_val_print helper for TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
716 generic_val_print_func (struct type
*type
,
717 int embedded_offset
, CORE_ADDR address
,
718 struct ui_file
*stream
,
719 struct value
*original_value
,
720 const struct value_print_options
*options
)
722 struct gdbarch
*gdbarch
= get_type_arch (type
);
726 val_print_scalar_formatted (type
, embedded_offset
,
727 original_value
, options
, 0, stream
);
731 /* FIXME, we should consider, at least for ANSI C language,
732 eliminating the distinction made between FUNCs and POINTERs
734 fprintf_filtered (stream
, "{");
735 type_print (type
, "", stream
, -1);
736 fprintf_filtered (stream
, "} ");
737 /* Try to print what function it points to, and its address. */
738 print_address_demangle (options
, gdbarch
, address
, stream
, demangle
);
742 /* generic_val_print helper for TYPE_CODE_BOOL. */
745 generic_val_print_bool (struct type
*type
,
746 int embedded_offset
, struct ui_file
*stream
,
747 struct value
*original_value
,
748 const struct value_print_options
*options
,
749 const struct generic_val_print_decorations
*decorations
)
752 struct gdbarch
*gdbarch
= get_type_arch (type
);
753 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
755 if (options
->format
|| options
->output_format
)
757 struct value_print_options opts
= *options
;
758 opts
.format
= (options
->format
? options
->format
759 : options
->output_format
);
760 val_print_scalar_formatted (type
, embedded_offset
,
761 original_value
, &opts
, 0, stream
);
765 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
767 val
= unpack_long (type
, valaddr
+ embedded_offset
* unit_size
);
769 fputs_filtered (decorations
->false_name
, stream
);
771 fputs_filtered (decorations
->true_name
, stream
);
773 print_longest (stream
, 'd', 0, val
);
777 /* generic_val_print helper for TYPE_CODE_INT. */
780 generic_val_print_int (struct type
*type
,
781 int embedded_offset
, struct ui_file
*stream
,
782 struct value
*original_value
,
783 const struct value_print_options
*options
)
785 struct value_print_options opts
= *options
;
787 opts
.format
= (options
->format
? options
->format
788 : options
->output_format
);
789 val_print_scalar_formatted (type
, embedded_offset
,
790 original_value
, &opts
, 0, stream
);
793 /* generic_val_print helper for TYPE_CODE_CHAR. */
796 generic_val_print_char (struct type
*type
, struct type
*unresolved_type
,
798 struct ui_file
*stream
,
799 struct value
*original_value
,
800 const struct value_print_options
*options
)
803 struct gdbarch
*gdbarch
= get_type_arch (type
);
804 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
806 if (options
->format
|| options
->output_format
)
808 struct value_print_options opts
= *options
;
810 opts
.format
= (options
->format
? options
->format
811 : options
->output_format
);
812 val_print_scalar_formatted (type
, embedded_offset
,
813 original_value
, &opts
, 0, stream
);
817 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
819 val
= unpack_long (type
, valaddr
+ embedded_offset
* unit_size
);
820 if (TYPE_UNSIGNED (type
))
821 fprintf_filtered (stream
, "%u", (unsigned int) val
);
823 fprintf_filtered (stream
, "%d", (int) val
);
824 fputs_filtered (" ", stream
);
825 LA_PRINT_CHAR (val
, unresolved_type
, stream
);
829 /* generic_val_print helper for TYPE_CODE_FLT. */
832 generic_val_print_float (struct type
*type
,
833 int embedded_offset
, struct ui_file
*stream
,
834 struct value
*original_value
,
835 const struct value_print_options
*options
)
837 struct gdbarch
*gdbarch
= get_type_arch (type
);
838 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
842 val_print_scalar_formatted (type
, embedded_offset
,
843 original_value
, options
, 0, stream
);
847 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
849 print_floating (valaddr
+ embedded_offset
* unit_size
, type
, stream
);
853 /* generic_val_print helper for TYPE_CODE_DECFLOAT. */
856 generic_val_print_decfloat (struct type
*type
,
857 int embedded_offset
, struct ui_file
*stream
,
858 struct value
*original_value
,
859 const struct value_print_options
*options
)
861 struct gdbarch
*gdbarch
= get_type_arch (type
);
862 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
865 val_print_scalar_formatted (type
, embedded_offset
, original_value
,
869 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
871 print_decimal_floating (valaddr
+ embedded_offset
* unit_size
, type
,
876 /* generic_val_print helper for TYPE_CODE_COMPLEX. */
879 generic_val_print_complex (struct type
*type
,
880 int embedded_offset
, struct ui_file
*stream
,
881 struct value
*original_value
,
882 const struct value_print_options
*options
,
883 const struct generic_val_print_decorations
886 struct gdbarch
*gdbarch
= get_type_arch (type
);
887 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
888 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
890 fprintf_filtered (stream
, "%s", decorations
->complex_prefix
);
892 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
),
893 embedded_offset
, original_value
, options
, 0,
896 print_floating (valaddr
+ embedded_offset
* unit_size
,
897 TYPE_TARGET_TYPE (type
), stream
);
898 fprintf_filtered (stream
, "%s", decorations
->complex_infix
);
900 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
),
902 + type_length_units (TYPE_TARGET_TYPE (type
)),
903 original_value
, options
, 0, stream
);
905 print_floating (valaddr
+ embedded_offset
* unit_size
906 + TYPE_LENGTH (TYPE_TARGET_TYPE (type
)),
907 TYPE_TARGET_TYPE (type
), stream
);
908 fprintf_filtered (stream
, "%s", decorations
->complex_suffix
);
911 /* A generic val_print that is suitable for use by language
912 implementations of the la_val_print method. This function can
913 handle most type codes, though not all, notably exception
914 TYPE_CODE_UNION and TYPE_CODE_STRUCT, which must be implemented by
917 Most arguments are as to val_print.
919 The additional DECORATIONS argument can be used to customize the
920 output in some small, language-specific ways. */
923 generic_val_print (struct type
*type
,
924 int embedded_offset
, CORE_ADDR address
,
925 struct ui_file
*stream
, int recurse
,
926 struct value
*original_value
,
927 const struct value_print_options
*options
,
928 const struct generic_val_print_decorations
*decorations
)
930 struct type
*unresolved_type
= type
;
932 type
= check_typedef (type
);
933 switch (TYPE_CODE (type
))
935 case TYPE_CODE_ARRAY
:
936 generic_val_print_array (type
, embedded_offset
, address
, stream
,
937 recurse
, original_value
, options
, decorations
);
940 case TYPE_CODE_MEMBERPTR
:
941 generic_val_print_memberptr (type
, embedded_offset
, stream
,
942 original_value
, options
);
946 generic_val_print_ptr (type
, embedded_offset
, stream
,
947 original_value
, options
);
951 case TYPE_CODE_RVALUE_REF
:
952 generic_val_print_ref (type
, embedded_offset
, stream
, recurse
,
953 original_value
, options
);
957 generic_val_print_enum (type
, embedded_offset
, stream
,
958 original_value
, options
);
961 case TYPE_CODE_FLAGS
:
962 generic_val_print_flags (type
, embedded_offset
, stream
,
963 original_value
, options
);
967 case TYPE_CODE_METHOD
:
968 generic_val_print_func (type
, embedded_offset
, address
, stream
,
969 original_value
, options
);
973 generic_val_print_bool (type
, embedded_offset
, stream
,
974 original_value
, options
, decorations
);
977 case TYPE_CODE_RANGE
:
978 /* FIXME: create_static_range_type does not set the unsigned bit in a
979 range type (I think it probably should copy it from the
980 target type), so we won't print values which are too large to
981 fit in a signed integer correctly. */
982 /* FIXME: Doesn't handle ranges of enums correctly. (Can't just
983 print with the target type, though, because the size of our
984 type and the target type might differ). */
989 generic_val_print_int (type
, embedded_offset
, stream
,
990 original_value
, options
);
994 generic_val_print_char (type
, unresolved_type
, embedded_offset
,
995 stream
, original_value
, options
);
999 generic_val_print_float (type
, embedded_offset
, stream
,
1000 original_value
, options
);
1003 case TYPE_CODE_DECFLOAT
:
1004 generic_val_print_decfloat (type
, embedded_offset
, stream
,
1005 original_value
, options
);
1008 case TYPE_CODE_VOID
:
1009 fputs_filtered (decorations
->void_name
, stream
);
1012 case TYPE_CODE_ERROR
:
1013 fprintf_filtered (stream
, "%s", TYPE_ERROR_NAME (type
));
1016 case TYPE_CODE_UNDEF
:
1017 /* This happens (without TYPE_STUB set) on systems which don't use
1018 dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
1019 and no complete type for struct foo in that file. */
1020 fprintf_filtered (stream
, _("<incomplete type>"));
1023 case TYPE_CODE_COMPLEX
:
1024 generic_val_print_complex (type
, embedded_offset
, stream
,
1025 original_value
, options
, decorations
);
1028 case TYPE_CODE_UNION
:
1029 case TYPE_CODE_STRUCT
:
1030 case TYPE_CODE_METHODPTR
:
1032 error (_("Unhandled type code %d in symbol table."),
1038 /* Print using the given LANGUAGE the data of type TYPE located at
1039 VAL's contents buffer + EMBEDDED_OFFSET (within GDB), which came
1040 from the inferior at address ADDRESS + EMBEDDED_OFFSET, onto
1041 stdio stream STREAM according to OPTIONS. VAL is the whole object
1042 that came from ADDRESS.
1044 The language printers will pass down an adjusted EMBEDDED_OFFSET to
1045 further helper subroutines as subfields of TYPE are printed. In
1046 such cases, VAL is passed down unadjusted, so
1047 that VAL can be queried for metadata about the contents data being
1048 printed, using EMBEDDED_OFFSET as an offset into VAL's contents
1049 buffer. For example: "has this field been optimized out", or "I'm
1050 printing an object while inspecting a traceframe; has this
1051 particular piece of data been collected?".
1053 RECURSE indicates the amount of indentation to supply before
1054 continuation lines; this amount is roughly twice the value of
1058 val_print (struct type
*type
, LONGEST embedded_offset
,
1059 CORE_ADDR address
, struct ui_file
*stream
, int recurse
,
1061 const struct value_print_options
*options
,
1062 const struct language_defn
*language
)
1065 struct value_print_options local_opts
= *options
;
1066 struct type
*real_type
= check_typedef (type
);
1068 if (local_opts
.prettyformat
== Val_prettyformat_default
)
1069 local_opts
.prettyformat
= (local_opts
.prettyformat_structs
1070 ? Val_prettyformat
: Val_no_prettyformat
);
1074 /* Ensure that the type is complete and not just a stub. If the type is
1075 only a stub and we can't find and substitute its complete type, then
1076 print appropriate string and return. */
1078 if (TYPE_STUB (real_type
))
1080 fprintf_filtered (stream
, _("<incomplete type>"));
1085 if (!valprint_check_validity (stream
, real_type
, embedded_offset
, val
))
1090 ret
= apply_ext_lang_val_pretty_printer (type
, embedded_offset
,
1091 address
, stream
, recurse
,
1092 val
, options
, language
);
1097 /* Handle summary mode. If the value is a scalar, print it;
1098 otherwise, print an ellipsis. */
1099 if (options
->summary
&& !val_print_scalar_type_p (type
))
1101 fprintf_filtered (stream
, "...");
1107 language
->la_val_print (type
, embedded_offset
, address
,
1108 stream
, recurse
, val
,
1111 CATCH (except
, RETURN_MASK_ERROR
)
1113 fprintf_filtered (stream
, _("<error reading variable>"));
1118 /* Check whether the value VAL is printable. Return 1 if it is;
1119 return 0 and print an appropriate error message to STREAM according to
1120 OPTIONS if it is not. */
1123 value_check_printable (struct value
*val
, struct ui_file
*stream
,
1124 const struct value_print_options
*options
)
1128 fprintf_filtered (stream
, _("<address of value unknown>"));
1132 if (value_entirely_optimized_out (val
))
1134 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1135 fprintf_filtered (stream
, "...");
1137 val_print_optimized_out (val
, stream
);
1141 if (value_entirely_unavailable (val
))
1143 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1144 fprintf_filtered (stream
, "...");
1146 val_print_unavailable (stream
);
1150 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_INTERNAL_FUNCTION
)
1152 fprintf_filtered (stream
, _("<internal function %s>"),
1153 value_internal_function_name (val
));
1157 if (type_not_associated (value_type (val
)))
1159 val_print_not_associated (stream
);
1163 if (type_not_allocated (value_type (val
)))
1165 val_print_not_allocated (stream
);
1172 /* Print using the given LANGUAGE the value VAL onto stream STREAM according
1175 This is a preferable interface to val_print, above, because it uses
1176 GDB's value mechanism. */
1179 common_val_print (struct value
*val
, struct ui_file
*stream
, int recurse
,
1180 const struct value_print_options
*options
,
1181 const struct language_defn
*language
)
1183 if (!value_check_printable (val
, stream
, options
))
1186 if (language
->la_language
== language_ada
)
1187 /* The value might have a dynamic type, which would cause trouble
1188 below when trying to extract the value contents (since the value
1189 size is determined from the type size which is unknown). So
1190 get a fixed representation of our value. */
1191 val
= ada_to_fixed_value (val
);
1193 if (value_lazy (val
))
1194 value_fetch_lazy (val
);
1196 val_print (value_type (val
),
1197 value_embedded_offset (val
), value_address (val
),
1199 val
, options
, language
);
1202 /* Print on stream STREAM the value VAL according to OPTIONS. The value
1203 is printed using the current_language syntax. */
1206 value_print (struct value
*val
, struct ui_file
*stream
,
1207 const struct value_print_options
*options
)
1209 if (!value_check_printable (val
, stream
, options
))
1215 = apply_ext_lang_val_pretty_printer (value_type (val
),
1216 value_embedded_offset (val
),
1217 value_address (val
),
1219 val
, options
, current_language
);
1225 LA_VALUE_PRINT (val
, stream
, options
);
1229 val_print_type_code_flags (struct type
*type
, const gdb_byte
*valaddr
,
1230 struct ui_file
*stream
)
1232 ULONGEST val
= unpack_long (type
, valaddr
);
1233 int field
, nfields
= TYPE_NFIELDS (type
);
1234 struct gdbarch
*gdbarch
= get_type_arch (type
);
1235 struct type
*bool_type
= builtin_type (gdbarch
)->builtin_bool
;
1237 fputs_filtered ("[", stream
);
1238 for (field
= 0; field
< nfields
; field
++)
1240 if (TYPE_FIELD_NAME (type
, field
)[0] != '\0')
1242 struct type
*field_type
= TYPE_FIELD_TYPE (type
, field
);
1244 if (field_type
== bool_type
1245 /* We require boolean types here to be one bit wide. This is a
1246 problematic place to notify the user of an internal error
1247 though. Instead just fall through and print the field as an
1249 && TYPE_FIELD_BITSIZE (type
, field
) == 1)
1251 if (val
& ((ULONGEST
)1 << TYPE_FIELD_BITPOS (type
, field
)))
1252 fprintf_filtered (stream
, " %s",
1253 TYPE_FIELD_NAME (type
, field
));
1257 unsigned field_len
= TYPE_FIELD_BITSIZE (type
, field
);
1259 = val
>> (TYPE_FIELD_BITPOS (type
, field
) - field_len
+ 1);
1261 if (field_len
< sizeof (ULONGEST
) * TARGET_CHAR_BIT
)
1262 field_val
&= ((ULONGEST
) 1 << field_len
) - 1;
1263 fprintf_filtered (stream
, " %s=",
1264 TYPE_FIELD_NAME (type
, field
));
1265 if (TYPE_CODE (field_type
) == TYPE_CODE_ENUM
)
1266 generic_val_print_enum_1 (field_type
, field_val
, stream
);
1268 print_longest (stream
, 'd', 0, field_val
);
1272 fputs_filtered (" ]", stream
);
1275 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
1276 according to OPTIONS and SIZE on STREAM. Format i is not supported
1279 This is how the elements of an array or structure are printed
1283 val_print_scalar_formatted (struct type
*type
,
1284 LONGEST embedded_offset
,
1286 const struct value_print_options
*options
,
1288 struct ui_file
*stream
)
1290 struct gdbarch
*arch
= get_type_arch (type
);
1291 int unit_size
= gdbarch_addressable_memory_unit_size (arch
);
1293 gdb_assert (val
!= NULL
);
1295 /* If we get here with a string format, try again without it. Go
1296 all the way back to the language printers, which may call us
1298 if (options
->format
== 's')
1300 struct value_print_options opts
= *options
;
1303 val_print (type
, embedded_offset
, 0, stream
, 0, val
, &opts
,
1308 /* value_contents_for_printing fetches all VAL's contents. They are
1309 needed to check whether VAL is optimized-out or unavailable
1311 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
1313 /* A scalar object that does not have all bits available can't be
1314 printed, because all bits contribute to its representation. */
1315 if (value_bits_any_optimized_out (val
,
1316 TARGET_CHAR_BIT
* embedded_offset
,
1317 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
1318 val_print_optimized_out (val
, stream
);
1319 else if (!value_bytes_available (val
, embedded_offset
, TYPE_LENGTH (type
)))
1320 val_print_unavailable (stream
);
1322 print_scalar_formatted (valaddr
+ embedded_offset
* unit_size
, type
,
1323 options
, size
, stream
);
1326 /* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g.
1327 The raison d'etre of this function is to consolidate printing of
1328 LONG_LONG's into this one function. The format chars b,h,w,g are
1329 from print_scalar_formatted(). Numbers are printed using C
1332 USE_C_FORMAT means to use C format in all cases. Without it,
1333 'o' and 'x' format do not include the standard C radix prefix
1336 Hilfinger/2004-09-09: USE_C_FORMAT was originally called USE_LOCAL
1337 and was intended to request formating according to the current
1338 language and would be used for most integers that GDB prints. The
1339 exceptional cases were things like protocols where the format of
1340 the integer is a protocol thing, not a user-visible thing). The
1341 parameter remains to preserve the information of what things might
1342 be printed with language-specific format, should we ever resurrect
1346 print_longest (struct ui_file
*stream
, int format
, int use_c_format
,
1354 val
= int_string (val_long
, 10, 1, 0, 1); break;
1356 val
= int_string (val_long
, 10, 0, 0, 1); break;
1358 val
= int_string (val_long
, 16, 0, 0, use_c_format
); break;
1360 val
= int_string (val_long
, 16, 0, 2, 1); break;
1362 val
= int_string (val_long
, 16, 0, 4, 1); break;
1364 val
= int_string (val_long
, 16, 0, 8, 1); break;
1366 val
= int_string (val_long
, 16, 0, 16, 1); break;
1369 val
= int_string (val_long
, 8, 0, 0, use_c_format
); break;
1371 internal_error (__FILE__
, __LINE__
,
1372 _("failed internal consistency check"));
1374 fputs_filtered (val
, stream
);
1377 /* This used to be a macro, but I don't think it is called often enough
1378 to merit such treatment. */
1379 /* Convert a LONGEST to an int. This is used in contexts (e.g. number of
1380 arguments to a function, number in a value history, register number, etc.)
1381 where the value must not be larger than can fit in an int. */
1384 longest_to_int (LONGEST arg
)
1386 /* Let the compiler do the work. */
1387 int rtnval
= (int) arg
;
1389 /* Check for overflows or underflows. */
1390 if (sizeof (LONGEST
) > sizeof (int))
1394 error (_("Value out of range."));
1400 /* Print a floating point value of type TYPE (not always a
1401 TYPE_CODE_FLT), pointed to in GDB by VALADDR, on STREAM. */
1404 print_floating (const gdb_byte
*valaddr
, struct type
*type
,
1405 struct ui_file
*stream
)
1409 const struct floatformat
*fmt
= NULL
;
1410 unsigned len
= TYPE_LENGTH (type
);
1411 enum float_kind kind
;
1413 /* If it is a floating-point, check for obvious problems. */
1414 if (TYPE_CODE (type
) == TYPE_CODE_FLT
)
1415 fmt
= floatformat_from_type (type
);
1418 kind
= floatformat_classify (fmt
, valaddr
);
1419 if (kind
== float_nan
)
1421 if (floatformat_is_negative (fmt
, valaddr
))
1422 fprintf_filtered (stream
, "-");
1423 fprintf_filtered (stream
, "nan(");
1424 fputs_filtered ("0x", stream
);
1425 fputs_filtered (floatformat_mantissa (fmt
, valaddr
), stream
);
1426 fprintf_filtered (stream
, ")");
1429 else if (kind
== float_infinite
)
1431 if (floatformat_is_negative (fmt
, valaddr
))
1432 fputs_filtered ("-", stream
);
1433 fputs_filtered ("inf", stream
);
1438 /* NOTE: cagney/2002-01-15: The TYPE passed into print_floating()
1439 isn't necessarily a TYPE_CODE_FLT. Consequently, unpack_double
1440 needs to be used as that takes care of any necessary type
1441 conversions. Such conversions are of course direct to DOUBLEST
1442 and disregard any possible target floating point limitations.
1443 For instance, a u64 would be converted and displayed exactly on a
1444 host with 80 bit DOUBLEST but with loss of information on a host
1445 with 64 bit DOUBLEST. */
1447 doub
= unpack_double (type
, valaddr
, &inv
);
1450 fprintf_filtered (stream
, "<invalid float value>");
1454 /* FIXME: kettenis/2001-01-20: The following code makes too much
1455 assumptions about the host and target floating point format. */
1457 /* NOTE: cagney/2002-02-03: Since the TYPE of what was passed in may
1458 not necessarily be a TYPE_CODE_FLT, the below ignores that and
1459 instead uses the type's length to determine the precision of the
1460 floating-point value being printed. */
1462 if (len
< sizeof (double))
1463 fprintf_filtered (stream
, "%.9g", (double) doub
);
1464 else if (len
== sizeof (double))
1465 fprintf_filtered (stream
, "%.17g", (double) doub
);
1467 #ifdef PRINTF_HAS_LONG_DOUBLE
1468 fprintf_filtered (stream
, "%.35Lg", doub
);
1470 /* This at least wins with values that are representable as
1472 fprintf_filtered (stream
, "%.17g", (double) doub
);
1477 print_decimal_floating (const gdb_byte
*valaddr
, struct type
*type
,
1478 struct ui_file
*stream
)
1480 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (type
));
1481 char decstr
[MAX_DECIMAL_STRING
];
1482 unsigned len
= TYPE_LENGTH (type
);
1484 decimal_to_string (valaddr
, len
, byte_order
, decstr
);
1485 fputs_filtered (decstr
, stream
);
1490 print_binary_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1491 unsigned len
, enum bfd_endian byte_order
, bool zero_pad
)
1494 #define BITS_IN_BYTES 8
1499 bool seen_a_one
= false;
1501 /* Declared "int" so it will be signed.
1502 This ensures that right shift will shift in zeros. */
1504 const int mask
= 0x080;
1506 if (byte_order
== BFD_ENDIAN_BIG
)
1512 /* Every byte has 8 binary characters; peel off
1513 and print from the MSB end. */
1515 for (i
= 0; i
< (BITS_IN_BYTES
* sizeof (*p
)); i
++)
1517 if (*p
& (mask
>> i
))
1522 if (zero_pad
|| seen_a_one
|| b
== '1')
1523 fputc_filtered (b
, stream
);
1531 for (p
= valaddr
+ len
- 1;
1535 for (i
= 0; i
< (BITS_IN_BYTES
* sizeof (*p
)); i
++)
1537 if (*p
& (mask
>> i
))
1542 if (zero_pad
|| seen_a_one
|| b
== '1')
1543 fputc_filtered (b
, stream
);
1550 /* When not zero-padding, ensure that something is printed when the
1552 if (!zero_pad
&& !seen_a_one
)
1553 fputc_filtered ('0', stream
);
1556 /* A helper for print_octal_chars that emits a single octal digit,
1557 optionally suppressing it if is zero and updating SEEN_A_ONE. */
1560 emit_octal_digit (struct ui_file
*stream
, bool *seen_a_one
, int digit
)
1562 if (*seen_a_one
|| digit
!= 0)
1563 fprintf_filtered (stream
, "%o", digit
);
1568 /* VALADDR points to an integer of LEN bytes.
1569 Print it in octal on stream or format it in buf. */
1572 print_octal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1573 unsigned len
, enum bfd_endian byte_order
)
1576 unsigned char octa1
, octa2
, octa3
, carry
;
1579 /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track
1580 * the extra bits, which cycle every three bytes:
1582 * Byte side: 0 1 2 3
1584 * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 |
1586 * Octal side: 0 1 carry 3 4 carry ...
1588 * Cycle number: 0 1 2
1590 * But of course we are printing from the high side, so we have to
1591 * figure out where in the cycle we are so that we end up with no
1592 * left over bits at the end.
1594 #define BITS_IN_OCTAL 3
1595 #define HIGH_ZERO 0340
1596 #define LOW_ZERO 0034
1597 #define CARRY_ZERO 0003
1598 static_assert (HIGH_ZERO
+ LOW_ZERO
+ CARRY_ZERO
== 0xff,
1599 "cycle zero constants are wrong");
1600 #define HIGH_ONE 0200
1601 #define MID_ONE 0160
1602 #define LOW_ONE 0016
1603 #define CARRY_ONE 0001
1604 static_assert (HIGH_ONE
+ MID_ONE
+ LOW_ONE
+ CARRY_ONE
== 0xff,
1605 "cycle one constants are wrong");
1606 #define HIGH_TWO 0300
1607 #define MID_TWO 0070
1608 #define LOW_TWO 0007
1609 static_assert (HIGH_TWO
+ MID_TWO
+ LOW_TWO
== 0xff,
1610 "cycle two constants are wrong");
1612 /* For 32 we start in cycle 2, with two bits and one bit carry;
1613 for 64 in cycle in cycle 1, with one bit and a two bit carry. */
1615 cycle
= (len
* BITS_IN_BYTES
) % BITS_IN_OCTAL
;
1618 fputs_filtered ("0", stream
);
1619 bool seen_a_one
= false;
1620 if (byte_order
== BFD_ENDIAN_BIG
)
1629 /* No carry in, carry out two bits. */
1631 octa1
= (HIGH_ZERO
& *p
) >> 5;
1632 octa2
= (LOW_ZERO
& *p
) >> 2;
1633 carry
= (CARRY_ZERO
& *p
);
1634 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1635 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1639 /* Carry in two bits, carry out one bit. */
1641 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1642 octa2
= (MID_ONE
& *p
) >> 4;
1643 octa3
= (LOW_ONE
& *p
) >> 1;
1644 carry
= (CARRY_ONE
& *p
);
1645 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1646 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1647 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1651 /* Carry in one bit, no carry out. */
1653 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1654 octa2
= (MID_TWO
& *p
) >> 3;
1655 octa3
= (LOW_TWO
& *p
);
1657 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1658 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1659 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1663 error (_("Internal error in octal conversion;"));
1667 cycle
= cycle
% BITS_IN_OCTAL
;
1672 for (p
= valaddr
+ len
- 1;
1679 /* Carry out, no carry in */
1681 octa1
= (HIGH_ZERO
& *p
) >> 5;
1682 octa2
= (LOW_ZERO
& *p
) >> 2;
1683 carry
= (CARRY_ZERO
& *p
);
1684 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1685 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1689 /* Carry in, carry out */
1691 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1692 octa2
= (MID_ONE
& *p
) >> 4;
1693 octa3
= (LOW_ONE
& *p
) >> 1;
1694 carry
= (CARRY_ONE
& *p
);
1695 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1696 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1697 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1701 /* Carry in, no carry out */
1703 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1704 octa2
= (MID_TWO
& *p
) >> 3;
1705 octa3
= (LOW_TWO
& *p
);
1707 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1708 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1709 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1713 error (_("Internal error in octal conversion;"));
1717 cycle
= cycle
% BITS_IN_OCTAL
;
1723 /* Possibly negate the integer represented by BYTES. It contains LEN
1724 bytes in the specified byte order. If the integer is negative,
1725 copy it into OUT_VEC, negate it, and return true. Otherwise, do
1726 nothing and return false. */
1729 maybe_negate_by_bytes (const gdb_byte
*bytes
, unsigned len
,
1730 enum bfd_endian byte_order
,
1731 gdb::byte_vector
*out_vec
)
1734 if (byte_order
== BFD_ENDIAN_BIG
)
1735 sign_byte
= bytes
[0];
1737 sign_byte
= bytes
[len
- 1];
1738 if ((sign_byte
& 0x80) == 0)
1741 out_vec
->resize (len
);
1743 /* Compute -x == 1 + ~x. */
1744 if (byte_order
== BFD_ENDIAN_LITTLE
)
1747 for (unsigned i
= 0; i
< len
; ++i
)
1749 unsigned tem
= (0xff & ~bytes
[i
]) + carry
;
1750 (*out_vec
)[i
] = tem
& 0xff;
1757 for (unsigned i
= len
; i
> 0; --i
)
1759 unsigned tem
= (0xff & ~bytes
[i
- 1]) + carry
;
1760 (*out_vec
)[i
- 1] = tem
& 0xff;
1768 /* VALADDR points to an integer of LEN bytes.
1769 Print it in decimal on stream or format it in buf. */
1772 print_decimal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1773 unsigned len
, bool is_signed
,
1774 enum bfd_endian byte_order
)
1777 #define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */
1778 #define CARRY_LEFT( x ) ((x) % TEN)
1779 #define SHIFT( x ) ((x) << 4)
1780 #define LOW_NIBBLE( x ) ( (x) & 0x00F)
1781 #define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4)
1786 int i
, j
, decimal_digits
;
1790 gdb::byte_vector negated_bytes
;
1792 && maybe_negate_by_bytes (valaddr
, len
, byte_order
, &negated_bytes
))
1794 fputs_filtered ("-", stream
);
1795 valaddr
= negated_bytes
.data ();
1798 /* Base-ten number is less than twice as many digits
1799 as the base 16 number, which is 2 digits per byte. */
1801 decimal_len
= len
* 2 * 2;
1802 std::vector
<unsigned char> digits (decimal_len
, 0);
1804 /* Ok, we have an unknown number of bytes of data to be printed in
1807 * Given a hex number (in nibbles) as XYZ, we start by taking X and
1808 * decemalizing it as "x1 x2" in two decimal nibbles. Then we multiply
1809 * the nibbles by 16, add Y and re-decimalize. Repeat with Z.
1811 * The trick is that "digits" holds a base-10 number, but sometimes
1812 * the individual digits are > 10.
1814 * Outer loop is per nibble (hex digit) of input, from MSD end to
1817 decimal_digits
= 0; /* Number of decimal digits so far */
1818 p
= (byte_order
== BFD_ENDIAN_BIG
) ? valaddr
: valaddr
+ len
- 1;
1820 while ((byte_order
== BFD_ENDIAN_BIG
) ? (p
< valaddr
+ len
) : (p
>= valaddr
))
1823 * Multiply current base-ten number by 16 in place.
1824 * Each digit was between 0 and 9, now is between
1827 for (j
= 0; j
< decimal_digits
; j
++)
1829 digits
[j
] = SHIFT (digits
[j
]);
1832 /* Take the next nibble off the input and add it to what
1833 * we've got in the LSB position. Bottom 'digit' is now
1834 * between 0 and 159.
1836 * "flip" is used to run this loop twice for each byte.
1840 /* Take top nibble. */
1842 digits
[0] += HIGH_NIBBLE (*p
);
1847 /* Take low nibble and bump our pointer "p". */
1849 digits
[0] += LOW_NIBBLE (*p
);
1850 if (byte_order
== BFD_ENDIAN_BIG
)
1857 /* Re-decimalize. We have to do this often enough
1858 * that we don't overflow, but once per nibble is
1859 * overkill. Easier this way, though. Note that the
1860 * carry is often larger than 10 (e.g. max initial
1861 * carry out of lowest nibble is 15, could bubble all
1862 * the way up greater than 10). So we have to do
1863 * the carrying beyond the last current digit.
1866 for (j
= 0; j
< decimal_len
- 1; j
++)
1870 /* "/" won't handle an unsigned char with
1871 * a value that if signed would be negative.
1872 * So extend to longword int via "dummy".
1875 carry
= CARRY_OUT (dummy
);
1876 digits
[j
] = CARRY_LEFT (dummy
);
1878 if (j
>= decimal_digits
&& carry
== 0)
1881 * All higher digits are 0 and we
1882 * no longer have a carry.
1884 * Note: "j" is 0-based, "decimal_digits" is
1887 decimal_digits
= j
+ 1;
1893 /* Ok, now "digits" is the decimal representation, with
1894 the "decimal_digits" actual digits. Print! */
1896 for (i
= decimal_digits
- 1; i
> 0 && digits
[i
] == 0; --i
)
1901 fprintf_filtered (stream
, "%1d", digits
[i
]);
1905 /* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */
1908 print_hex_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1909 unsigned len
, enum bfd_endian byte_order
,
1914 fputs_filtered ("0x", stream
);
1915 if (byte_order
== BFD_ENDIAN_BIG
)
1921 /* Strip leading 0 bytes, but be sure to leave at least a
1922 single byte at the end. */
1923 for (; p
< valaddr
+ len
- 1 && !*p
; ++p
)
1927 const gdb_byte
*first
= p
;
1932 /* When not zero-padding, use a different format for the
1933 very first byte printed. */
1934 if (!zero_pad
&& p
== first
)
1935 fprintf_filtered (stream
, "%x", *p
);
1937 fprintf_filtered (stream
, "%02x", *p
);
1942 p
= valaddr
+ len
- 1;
1946 /* Strip leading 0 bytes, but be sure to leave at least a
1947 single byte at the end. */
1948 for (; p
>= valaddr
+ 1 && !*p
; --p
)
1952 const gdb_byte
*first
= p
;
1957 /* When not zero-padding, use a different format for the
1958 very first byte printed. */
1959 if (!zero_pad
&& p
== first
)
1960 fprintf_filtered (stream
, "%x", *p
);
1962 fprintf_filtered (stream
, "%02x", *p
);
1967 /* VALADDR points to a char integer of LEN bytes.
1968 Print it out in appropriate language form on stream.
1969 Omit any leading zero chars. */
1972 print_char_chars (struct ui_file
*stream
, struct type
*type
,
1973 const gdb_byte
*valaddr
,
1974 unsigned len
, enum bfd_endian byte_order
)
1978 if (byte_order
== BFD_ENDIAN_BIG
)
1981 while (p
< valaddr
+ len
- 1 && *p
== 0)
1984 while (p
< valaddr
+ len
)
1986 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
1992 p
= valaddr
+ len
- 1;
1993 while (p
> valaddr
&& *p
== 0)
1996 while (p
>= valaddr
)
1998 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
2004 /* Print function pointer with inferior address ADDRESS onto stdio
2008 print_function_pointer_address (const struct value_print_options
*options
,
2009 struct gdbarch
*gdbarch
,
2011 struct ui_file
*stream
)
2014 = gdbarch_convert_from_func_ptr_addr (gdbarch
, address
,
2017 /* If the function pointer is represented by a description, print
2018 the address of the description. */
2019 if (options
->addressprint
&& func_addr
!= address
)
2021 fputs_filtered ("@", stream
);
2022 fputs_filtered (paddress (gdbarch
, address
), stream
);
2023 fputs_filtered (": ", stream
);
2025 print_address_demangle (options
, gdbarch
, func_addr
, stream
, demangle
);
2029 /* Print on STREAM using the given OPTIONS the index for the element
2030 at INDEX of an array whose index type is INDEX_TYPE. */
2033 maybe_print_array_index (struct type
*index_type
, LONGEST index
,
2034 struct ui_file
*stream
,
2035 const struct value_print_options
*options
)
2037 struct value
*index_value
;
2039 if (!options
->print_array_indexes
)
2042 index_value
= value_from_longest (index_type
, index
);
2044 LA_PRINT_ARRAY_INDEX (index_value
, stream
, options
);
2047 /* Called by various <lang>_val_print routines to print elements of an
2048 array in the form "<elem1>, <elem2>, <elem3>, ...".
2050 (FIXME?) Assumes array element separator is a comma, which is correct
2051 for all languages currently handled.
2052 (FIXME?) Some languages have a notation for repeated array elements,
2053 perhaps we should try to use that notation when appropriate. */
2056 val_print_array_elements (struct type
*type
,
2057 LONGEST embedded_offset
,
2058 CORE_ADDR address
, struct ui_file
*stream
,
2061 const struct value_print_options
*options
,
2064 unsigned int things_printed
= 0;
2066 struct type
*elttype
, *index_type
, *base_index_type
;
2068 /* Position of the array element we are examining to see
2069 whether it is repeated. */
2071 /* Number of repetitions we have detected so far. */
2073 LONGEST low_bound
, high_bound
;
2074 LONGEST low_pos
, high_pos
;
2076 elttype
= TYPE_TARGET_TYPE (type
);
2077 eltlen
= type_length_units (check_typedef (elttype
));
2078 index_type
= TYPE_INDEX_TYPE (type
);
2080 if (get_array_bounds (type
, &low_bound
, &high_bound
))
2082 if (TYPE_CODE (index_type
) == TYPE_CODE_RANGE
)
2083 base_index_type
= TYPE_TARGET_TYPE (index_type
);
2085 base_index_type
= index_type
;
2087 /* Non-contiguous enumerations types can by used as index types
2088 in some languages (e.g. Ada). In this case, the array length
2089 shall be computed from the positions of the first and last
2090 literal in the enumeration type, and not from the values
2091 of these literals. */
2092 if (!discrete_position (base_index_type
, low_bound
, &low_pos
)
2093 || !discrete_position (base_index_type
, high_bound
, &high_pos
))
2095 warning (_("unable to get positions in array, use bounds instead"));
2096 low_pos
= low_bound
;
2097 high_pos
= high_bound
;
2100 /* The array length should normally be HIGH_POS - LOW_POS + 1.
2101 But we have to be a little extra careful, because some languages
2102 such as Ada allow LOW_POS to be greater than HIGH_POS for
2103 empty arrays. In that situation, the array length is just zero,
2105 if (low_pos
> high_pos
)
2108 len
= high_pos
- low_pos
+ 1;
2112 warning (_("unable to get bounds of array, assuming null array"));
2117 annotate_array_section_begin (i
, elttype
);
2119 for (; i
< len
&& things_printed
< options
->print_max
; i
++)
2123 if (options
->prettyformat_arrays
)
2125 fprintf_filtered (stream
, ",\n");
2126 print_spaces_filtered (2 + 2 * recurse
, stream
);
2130 fprintf_filtered (stream
, ", ");
2133 wrap_here (n_spaces (2 + 2 * recurse
));
2134 maybe_print_array_index (index_type
, i
+ low_bound
,
2139 /* Only check for reps if repeat_count_threshold is not set to
2140 UINT_MAX (unlimited). */
2141 if (options
->repeat_count_threshold
< UINT_MAX
)
2144 && value_contents_eq (val
,
2145 embedded_offset
+ i
* eltlen
,
2156 if (reps
> options
->repeat_count_threshold
)
2158 val_print (elttype
, embedded_offset
+ i
* eltlen
,
2159 address
, stream
, recurse
+ 1, val
, options
,
2161 annotate_elt_rep (reps
);
2162 fprintf_filtered (stream
, " <repeats %u times>", reps
);
2163 annotate_elt_rep_end ();
2166 things_printed
+= options
->repeat_count_threshold
;
2170 val_print (elttype
, embedded_offset
+ i
* eltlen
,
2172 stream
, recurse
+ 1, val
, options
, current_language
);
2177 annotate_array_section_end ();
2180 fprintf_filtered (stream
, "...");
2184 /* Read LEN bytes of target memory at address MEMADDR, placing the
2185 results in GDB's memory at MYADDR. Returns a count of the bytes
2186 actually read, and optionally a target_xfer_status value in the
2187 location pointed to by ERRPTR if ERRPTR is non-null. */
2189 /* FIXME: cagney/1999-10-14: Only used by val_print_string. Can this
2190 function be eliminated. */
2193 partial_memory_read (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
2194 int len
, int *errptr
)
2196 int nread
; /* Number of bytes actually read. */
2197 int errcode
; /* Error from last read. */
2199 /* First try a complete read. */
2200 errcode
= target_read_memory (memaddr
, myaddr
, len
);
2208 /* Loop, reading one byte at a time until we get as much as we can. */
2209 for (errcode
= 0, nread
= 0; len
> 0 && errcode
== 0; nread
++, len
--)
2211 errcode
= target_read_memory (memaddr
++, myaddr
++, 1);
2213 /* If an error, the last read was unsuccessful, so adjust count. */
2226 /* Read a string from the inferior, at ADDR, with LEN characters of WIDTH bytes
2227 each. Fetch at most FETCHLIMIT characters. BUFFER will be set to a newly
2228 allocated buffer containing the string, which the caller is responsible to
2229 free, and BYTES_READ will be set to the number of bytes read. Returns 0 on
2230 success, or a target_xfer_status on failure.
2232 If LEN > 0, reads the lesser of LEN or FETCHLIMIT characters
2233 (including eventual NULs in the middle or end of the string).
2235 If LEN is -1, stops at the first null character (not necessarily
2236 the first null byte) up to a maximum of FETCHLIMIT characters. Set
2237 FETCHLIMIT to UINT_MAX to read as many characters as possible from
2240 Unless an exception is thrown, BUFFER will always be allocated, even on
2241 failure. In this case, some characters might have been read before the
2242 failure happened. Check BYTES_READ to recognize this situation.
2244 Note: There was a FIXME asking to make this code use target_read_string,
2245 but this function is more general (can read past null characters, up to
2246 given LEN). Besides, it is used much more often than target_read_string
2247 so it is more tested. Perhaps callers of target_read_string should use
2248 this function instead? */
2251 read_string (CORE_ADDR addr
, int len
, int width
, unsigned int fetchlimit
,
2252 enum bfd_endian byte_order
, gdb_byte
**buffer
, int *bytes_read
)
2254 int errcode
; /* Errno returned from bad reads. */
2255 unsigned int nfetch
; /* Chars to fetch / chars fetched. */
2256 gdb_byte
*bufptr
; /* Pointer to next available byte in
2258 struct cleanup
*old_chain
= NULL
; /* Top of the old cleanup chain. */
2260 /* Loop until we either have all the characters, or we encounter
2261 some error, such as bumping into the end of the address space. */
2265 old_chain
= make_cleanup (free_current_contents
, buffer
);
2269 /* We want fetchlimit chars, so we might as well read them all in
2271 unsigned int fetchlen
= std::min ((unsigned) len
, fetchlimit
);
2273 *buffer
= (gdb_byte
*) xmalloc (fetchlen
* width
);
2276 nfetch
= partial_memory_read (addr
, bufptr
, fetchlen
* width
, &errcode
)
2278 addr
+= nfetch
* width
;
2279 bufptr
+= nfetch
* width
;
2283 unsigned long bufsize
= 0;
2284 unsigned int chunksize
; /* Size of each fetch, in chars. */
2285 int found_nul
; /* Non-zero if we found the nul char. */
2286 gdb_byte
*limit
; /* First location past end of fetch buffer. */
2289 /* We are looking for a NUL terminator to end the fetching, so we
2290 might as well read in blocks that are large enough to be efficient,
2291 but not so large as to be slow if fetchlimit happens to be large.
2292 So we choose the minimum of 8 and fetchlimit. We used to use 200
2293 instead of 8 but 200 is way too big for remote debugging over a
2295 chunksize
= std::min (8u, fetchlimit
);
2300 nfetch
= std::min ((unsigned long) chunksize
, fetchlimit
- bufsize
);
2302 if (*buffer
== NULL
)
2303 *buffer
= (gdb_byte
*) xmalloc (nfetch
* width
);
2305 *buffer
= (gdb_byte
*) xrealloc (*buffer
,
2306 (nfetch
+ bufsize
) * width
);
2308 bufptr
= *buffer
+ bufsize
* width
;
2311 /* Read as much as we can. */
2312 nfetch
= partial_memory_read (addr
, bufptr
, nfetch
* width
, &errcode
)
2315 /* Scan this chunk for the null character that terminates the string
2316 to print. If found, we don't need to fetch any more. Note
2317 that bufptr is explicitly left pointing at the next character
2318 after the null character, or at the next character after the end
2321 limit
= bufptr
+ nfetch
* width
;
2322 while (bufptr
< limit
)
2326 c
= extract_unsigned_integer (bufptr
, width
, byte_order
);
2331 /* We don't care about any error which happened after
2332 the NUL terminator. */
2339 while (errcode
== 0 /* no error */
2340 && bufptr
- *buffer
< fetchlimit
* width
/* no overrun */
2341 && !found_nul
); /* haven't found NUL yet */
2344 { /* Length of string is really 0! */
2345 /* We always allocate *buffer. */
2346 *buffer
= bufptr
= (gdb_byte
*) xmalloc (1);
2350 /* bufptr and addr now point immediately beyond the last byte which we
2351 consider part of the string (including a '\0' which ends the string). */
2352 *bytes_read
= bufptr
- *buffer
;
2356 discard_cleanups (old_chain
);
2361 /* Return true if print_wchar can display W without resorting to a
2362 numeric escape, false otherwise. */
2365 wchar_printable (gdb_wchar_t w
)
2367 return (gdb_iswprint (w
)
2368 || w
== LCST ('\a') || w
== LCST ('\b')
2369 || w
== LCST ('\f') || w
== LCST ('\n')
2370 || w
== LCST ('\r') || w
== LCST ('\t')
2371 || w
== LCST ('\v'));
2374 /* A helper function that converts the contents of STRING to wide
2375 characters and then appends them to OUTPUT. */
2378 append_string_as_wide (const char *string
,
2379 struct obstack
*output
)
2381 for (; *string
; ++string
)
2383 gdb_wchar_t w
= gdb_btowc (*string
);
2384 obstack_grow (output
, &w
, sizeof (gdb_wchar_t
));
2388 /* Print a wide character W to OUTPUT. ORIG is a pointer to the
2389 original (target) bytes representing the character, ORIG_LEN is the
2390 number of valid bytes. WIDTH is the number of bytes in a base
2391 characters of the type. OUTPUT is an obstack to which wide
2392 characters are emitted. QUOTER is a (narrow) character indicating
2393 the style of quotes surrounding the character to be printed.
2394 NEED_ESCAPE is an in/out flag which is used to track numeric
2395 escapes across calls. */
2398 print_wchar (gdb_wint_t w
, const gdb_byte
*orig
,
2399 int orig_len
, int width
,
2400 enum bfd_endian byte_order
,
2401 struct obstack
*output
,
2402 int quoter
, int *need_escapep
)
2404 int need_escape
= *need_escapep
;
2408 /* iswprint implementation on Windows returns 1 for tab character.
2409 In order to avoid different printout on this host, we explicitly
2410 use wchar_printable function. */
2414 obstack_grow_wstr (output
, LCST ("\\a"));
2417 obstack_grow_wstr (output
, LCST ("\\b"));
2420 obstack_grow_wstr (output
, LCST ("\\f"));
2423 obstack_grow_wstr (output
, LCST ("\\n"));
2426 obstack_grow_wstr (output
, LCST ("\\r"));
2429 obstack_grow_wstr (output
, LCST ("\\t"));
2432 obstack_grow_wstr (output
, LCST ("\\v"));
2436 if (wchar_printable (w
) && (!need_escape
|| (!gdb_iswdigit (w
)
2438 && w
!= LCST ('9'))))
2440 gdb_wchar_t wchar
= w
;
2442 if (w
== gdb_btowc (quoter
) || w
== LCST ('\\'))
2443 obstack_grow_wstr (output
, LCST ("\\"));
2444 obstack_grow (output
, &wchar
, sizeof (gdb_wchar_t
));
2450 for (i
= 0; i
+ width
<= orig_len
; i
+= width
)
2455 value
= extract_unsigned_integer (&orig
[i
], width
,
2457 /* If the value fits in 3 octal digits, print it that
2458 way. Otherwise, print it as a hex escape. */
2460 xsnprintf (octal
, sizeof (octal
), "\\%.3o",
2461 (int) (value
& 0777));
2463 xsnprintf (octal
, sizeof (octal
), "\\x%lx", (long) value
);
2464 append_string_as_wide (octal
, output
);
2466 /* If we somehow have extra bytes, print them now. */
2467 while (i
< orig_len
)
2471 xsnprintf (octal
, sizeof (octal
), "\\%.3o", orig
[i
] & 0xff);
2472 append_string_as_wide (octal
, output
);
2483 /* Print the character C on STREAM as part of the contents of a
2484 literal string whose delimiter is QUOTER. ENCODING names the
2488 generic_emit_char (int c
, struct type
*type
, struct ui_file
*stream
,
2489 int quoter
, const char *encoding
)
2491 enum bfd_endian byte_order
2492 = gdbarch_byte_order (get_type_arch (type
));
2494 int need_escape
= 0;
2496 buf
= (gdb_byte
*) alloca (TYPE_LENGTH (type
));
2497 pack_long (buf
, type
, c
);
2499 wchar_iterator
iter (buf
, TYPE_LENGTH (type
), encoding
, TYPE_LENGTH (type
));
2501 /* This holds the printable form of the wchar_t data. */
2502 auto_obstack wchar_buf
;
2508 const gdb_byte
*buf
;
2510 int print_escape
= 1;
2511 enum wchar_iterate_result result
;
2513 num_chars
= iter
.iterate (&result
, &chars
, &buf
, &buflen
);
2518 /* If all characters are printable, print them. Otherwise,
2519 we're going to have to print an escape sequence. We
2520 check all characters because we want to print the target
2521 bytes in the escape sequence, and we don't know character
2522 boundaries there. */
2526 for (i
= 0; i
< num_chars
; ++i
)
2527 if (!wchar_printable (chars
[i
]))
2535 for (i
= 0; i
< num_chars
; ++i
)
2536 print_wchar (chars
[i
], buf
, buflen
,
2537 TYPE_LENGTH (type
), byte_order
,
2538 &wchar_buf
, quoter
, &need_escape
);
2542 /* This handles the NUM_CHARS == 0 case as well. */
2544 print_wchar (gdb_WEOF
, buf
, buflen
, TYPE_LENGTH (type
),
2545 byte_order
, &wchar_buf
, quoter
, &need_escape
);
2548 /* The output in the host encoding. */
2549 auto_obstack output
;
2551 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2552 (gdb_byte
*) obstack_base (&wchar_buf
),
2553 obstack_object_size (&wchar_buf
),
2554 sizeof (gdb_wchar_t
), &output
, translit_char
);
2555 obstack_1grow (&output
, '\0');
2557 fputs_filtered ((const char *) obstack_base (&output
), stream
);
2560 /* Return the repeat count of the next character/byte in ITER,
2561 storing the result in VEC. */
2564 count_next_character (wchar_iterator
*iter
,
2565 VEC (converted_character_d
) **vec
)
2567 struct converted_character
*current
;
2569 if (VEC_empty (converted_character_d
, *vec
))
2571 struct converted_character tmp
;
2575 = iter
->iterate (&tmp
.result
, &chars
, &tmp
.buf
, &tmp
.buflen
);
2576 if (tmp
.num_chars
> 0)
2578 gdb_assert (tmp
.num_chars
< MAX_WCHARS
);
2579 memcpy (tmp
.chars
, chars
, tmp
.num_chars
* sizeof (gdb_wchar_t
));
2581 VEC_safe_push (converted_character_d
, *vec
, &tmp
);
2584 current
= VEC_last (converted_character_d
, *vec
);
2586 /* Count repeated characters or bytes. */
2587 current
->repeat_count
= 1;
2588 if (current
->num_chars
== -1)
2596 struct converted_character d
;
2603 /* Get the next character. */
2604 d
.num_chars
= iter
->iterate (&d
.result
, &chars
, &d
.buf
, &d
.buflen
);
2606 /* If a character was successfully converted, save the character
2607 into the converted character. */
2608 if (d
.num_chars
> 0)
2610 gdb_assert (d
.num_chars
< MAX_WCHARS
);
2611 memcpy (d
.chars
, chars
, WCHAR_BUFLEN (d
.num_chars
));
2614 /* Determine if the current character is the same as this
2616 if (d
.num_chars
== current
->num_chars
&& d
.result
== current
->result
)
2618 /* There are two cases to consider:
2620 1) Equality of converted character (num_chars > 0)
2621 2) Equality of non-converted character (num_chars == 0) */
2622 if ((current
->num_chars
> 0
2623 && memcmp (current
->chars
, d
.chars
,
2624 WCHAR_BUFLEN (current
->num_chars
)) == 0)
2625 || (current
->num_chars
== 0
2626 && current
->buflen
== d
.buflen
2627 && memcmp (current
->buf
, d
.buf
, current
->buflen
) == 0))
2628 ++current
->repeat_count
;
2636 /* Push this next converted character onto the result vector. */
2637 repeat
= current
->repeat_count
;
2638 VEC_safe_push (converted_character_d
, *vec
, &d
);
2643 /* Print the characters in CHARS to the OBSTACK. QUOTE_CHAR is the quote
2644 character to use with string output. WIDTH is the size of the output
2645 character type. BYTE_ORDER is the the target byte order. OPTIONS
2646 is the user's print options. */
2649 print_converted_chars_to_obstack (struct obstack
*obstack
,
2650 VEC (converted_character_d
) *chars
,
2651 int quote_char
, int width
,
2652 enum bfd_endian byte_order
,
2653 const struct value_print_options
*options
)
2656 struct converted_character
*elem
;
2657 enum {START
, SINGLE
, REPEAT
, INCOMPLETE
, FINISH
} state
, last
;
2658 gdb_wchar_t wide_quote_char
= gdb_btowc (quote_char
);
2659 int need_escape
= 0;
2661 /* Set the start state. */
2663 last
= state
= START
;
2671 /* Nothing to do. */
2678 /* We are outputting a single character
2679 (< options->repeat_count_threshold). */
2683 /* We were outputting some other type of content, so we
2684 must output and a comma and a quote. */
2686 obstack_grow_wstr (obstack
, LCST (", "));
2687 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2689 /* Output the character. */
2690 for (j
= 0; j
< elem
->repeat_count
; ++j
)
2692 if (elem
->result
== wchar_iterate_ok
)
2693 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2694 byte_order
, obstack
, quote_char
, &need_escape
);
2696 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2697 byte_order
, obstack
, quote_char
, &need_escape
);
2707 /* We are outputting a character with a repeat count
2708 greater than options->repeat_count_threshold. */
2712 /* We were outputting a single string. Terminate the
2714 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2717 obstack_grow_wstr (obstack
, LCST (", "));
2719 /* Output the character and repeat string. */
2720 obstack_grow_wstr (obstack
, LCST ("'"));
2721 if (elem
->result
== wchar_iterate_ok
)
2722 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2723 byte_order
, obstack
, quote_char
, &need_escape
);
2725 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2726 byte_order
, obstack
, quote_char
, &need_escape
);
2727 obstack_grow_wstr (obstack
, LCST ("'"));
2728 s
= xstrprintf (_(" <repeats %u times>"), elem
->repeat_count
);
2729 for (j
= 0; s
[j
]; ++j
)
2731 gdb_wchar_t w
= gdb_btowc (s
[j
]);
2732 obstack_grow (obstack
, &w
, sizeof (gdb_wchar_t
));
2739 /* We are outputting an incomplete sequence. */
2742 /* If we were outputting a string of SINGLE characters,
2743 terminate the quote. */
2744 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2747 obstack_grow_wstr (obstack
, LCST (", "));
2749 /* Output the incomplete sequence string. */
2750 obstack_grow_wstr (obstack
, LCST ("<incomplete sequence "));
2751 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
, byte_order
,
2752 obstack
, 0, &need_escape
);
2753 obstack_grow_wstr (obstack
, LCST (">"));
2755 /* We do not attempt to outupt anything after this. */
2760 /* All done. If we were outputting a string of SINGLE
2761 characters, the string must be terminated. Otherwise,
2762 REPEAT and INCOMPLETE are always left properly terminated. */
2764 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2769 /* Get the next element and state. */
2771 if (state
!= FINISH
)
2773 elem
= VEC_index (converted_character_d
, chars
, idx
++);
2774 switch (elem
->result
)
2776 case wchar_iterate_ok
:
2777 case wchar_iterate_invalid
:
2778 if (elem
->repeat_count
> options
->repeat_count_threshold
)
2784 case wchar_iterate_incomplete
:
2788 case wchar_iterate_eof
:
2796 /* Print the character string STRING, printing at most LENGTH
2797 characters. LENGTH is -1 if the string is nul terminated. TYPE is
2798 the type of each character. OPTIONS holds the printing options;
2799 printing stops early if the number hits print_max; repeat counts
2800 are printed as appropriate. Print ellipses at the end if we had to
2801 stop before printing LENGTH characters, or if FORCE_ELLIPSES.
2802 QUOTE_CHAR is the character to print at each end of the string. If
2803 C_STYLE_TERMINATOR is true, and the last character is 0, then it is
2807 generic_printstr (struct ui_file
*stream
, struct type
*type
,
2808 const gdb_byte
*string
, unsigned int length
,
2809 const char *encoding
, int force_ellipses
,
2810 int quote_char
, int c_style_terminator
,
2811 const struct value_print_options
*options
)
2813 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (type
));
2815 int width
= TYPE_LENGTH (type
);
2816 struct cleanup
*cleanup
;
2818 struct converted_character
*last
;
2819 VEC (converted_character_d
) *converted_chars
;
2823 unsigned long current_char
= 1;
2825 for (i
= 0; current_char
; ++i
)
2828 current_char
= extract_unsigned_integer (string
+ i
* width
,
2834 /* If the string was not truncated due to `set print elements', and
2835 the last byte of it is a null, we don't print that, in
2836 traditional C style. */
2837 if (c_style_terminator
2840 && (extract_unsigned_integer (string
+ (length
- 1) * width
,
2841 width
, byte_order
) == 0))
2846 fputs_filtered ("\"\"", stream
);
2850 /* Arrange to iterate over the characters, in wchar_t form. */
2851 wchar_iterator
iter (string
, length
* width
, encoding
, width
);
2852 converted_chars
= NULL
;
2853 cleanup
= make_cleanup (VEC_cleanup (converted_character_d
),
2856 /* Convert characters until the string is over or the maximum
2857 number of printed characters has been reached. */
2859 while (i
< options
->print_max
)
2865 /* Grab the next character and repeat count. */
2866 r
= count_next_character (&iter
, &converted_chars
);
2868 /* If less than zero, the end of the input string was reached. */
2872 /* Otherwise, add the count to the total print count and get
2873 the next character. */
2877 /* Get the last element and determine if the entire string was
2879 last
= VEC_last (converted_character_d
, converted_chars
);
2880 finished
= (last
->result
== wchar_iterate_eof
);
2882 /* Ensure that CONVERTED_CHARS is terminated. */
2883 last
->result
= wchar_iterate_eof
;
2885 /* WCHAR_BUF is the obstack we use to represent the string in
2887 auto_obstack wchar_buf
;
2889 /* Print the output string to the obstack. */
2890 print_converted_chars_to_obstack (&wchar_buf
, converted_chars
, quote_char
,
2891 width
, byte_order
, options
);
2893 if (force_ellipses
|| !finished
)
2894 obstack_grow_wstr (&wchar_buf
, LCST ("..."));
2896 /* OUTPUT is where we collect `char's for printing. */
2897 auto_obstack output
;
2899 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2900 (gdb_byte
*) obstack_base (&wchar_buf
),
2901 obstack_object_size (&wchar_buf
),
2902 sizeof (gdb_wchar_t
), &output
, translit_char
);
2903 obstack_1grow (&output
, '\0');
2905 fputs_filtered ((const char *) obstack_base (&output
), stream
);
2907 do_cleanups (cleanup
);
2910 /* Print a string from the inferior, starting at ADDR and printing up to LEN
2911 characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing
2912 stops at the first null byte, otherwise printing proceeds (including null
2913 bytes) until either print_max or LEN characters have been printed,
2914 whichever is smaller. ENCODING is the name of the string's
2915 encoding. It can be NULL, in which case the target encoding is
2919 val_print_string (struct type
*elttype
, const char *encoding
,
2920 CORE_ADDR addr
, int len
,
2921 struct ui_file
*stream
,
2922 const struct value_print_options
*options
)
2924 int force_ellipsis
= 0; /* Force ellipsis to be printed if nonzero. */
2925 int err
; /* Non-zero if we got a bad read. */
2926 int found_nul
; /* Non-zero if we found the nul char. */
2927 unsigned int fetchlimit
; /* Maximum number of chars to print. */
2929 gdb_byte
*buffer
= NULL
; /* Dynamically growable fetch buffer. */
2930 struct cleanup
*old_chain
= NULL
; /* Top of the old cleanup chain. */
2931 struct gdbarch
*gdbarch
= get_type_arch (elttype
);
2932 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
2933 int width
= TYPE_LENGTH (elttype
);
2935 /* First we need to figure out the limit on the number of characters we are
2936 going to attempt to fetch and print. This is actually pretty simple. If
2937 LEN >= zero, then the limit is the minimum of LEN and print_max. If
2938 LEN is -1, then the limit is print_max. This is true regardless of
2939 whether print_max is zero, UINT_MAX (unlimited), or something in between,
2940 because finding the null byte (or available memory) is what actually
2941 limits the fetch. */
2943 fetchlimit
= (len
== -1 ? options
->print_max
: std::min ((unsigned) len
,
2944 options
->print_max
));
2946 err
= read_string (addr
, len
, width
, fetchlimit
, byte_order
,
2947 &buffer
, &bytes_read
);
2948 old_chain
= make_cleanup (xfree
, buffer
);
2952 /* We now have either successfully filled the buffer to fetchlimit,
2953 or terminated early due to an error or finding a null char when
2956 /* Determine found_nul by looking at the last character read. */
2958 if (bytes_read
>= width
)
2959 found_nul
= extract_unsigned_integer (buffer
+ bytes_read
- width
, width
,
2961 if (len
== -1 && !found_nul
)
2965 /* We didn't find a NUL terminator we were looking for. Attempt
2966 to peek at the next character. If not successful, or it is not
2967 a null byte, then force ellipsis to be printed. */
2969 peekbuf
= (gdb_byte
*) alloca (width
);
2971 if (target_read_memory (addr
, peekbuf
, width
) == 0
2972 && extract_unsigned_integer (peekbuf
, width
, byte_order
) != 0)
2975 else if ((len
>= 0 && err
!= 0) || (len
> bytes_read
/ width
))
2977 /* Getting an error when we have a requested length, or fetching less
2978 than the number of characters actually requested, always make us
2983 /* If we get an error before fetching anything, don't print a string.
2984 But if we fetch something and then get an error, print the string
2985 and then the error message. */
2986 if (err
== 0 || bytes_read
> 0)
2988 LA_PRINT_STRING (stream
, elttype
, buffer
, bytes_read
/ width
,
2989 encoding
, force_ellipsis
, options
);
2996 str
= memory_error_message (TARGET_XFER_E_IO
, gdbarch
, addr
);
2997 make_cleanup (xfree
, str
);
2999 fprintf_filtered (stream
, "<error: ");
3000 fputs_filtered (str
, stream
);
3001 fprintf_filtered (stream
, ">");
3005 do_cleanups (old_chain
);
3007 return (bytes_read
/ width
);
3011 /* The 'set input-radix' command writes to this auxiliary variable.
3012 If the requested radix is valid, INPUT_RADIX is updated; otherwise,
3013 it is left unchanged. */
3015 static unsigned input_radix_1
= 10;
3017 /* Validate an input or output radix setting, and make sure the user
3018 knows what they really did here. Radix setting is confusing, e.g.
3019 setting the input radix to "10" never changes it! */
3022 set_input_radix (char *args
, int from_tty
, struct cmd_list_element
*c
)
3024 set_input_radix_1 (from_tty
, input_radix_1
);
3028 set_input_radix_1 (int from_tty
, unsigned radix
)
3030 /* We don't currently disallow any input radix except 0 or 1, which don't
3031 make any mathematical sense. In theory, we can deal with any input
3032 radix greater than 1, even if we don't have unique digits for every
3033 value from 0 to radix-1, but in practice we lose on large radix values.
3034 We should either fix the lossage or restrict the radix range more.
3039 input_radix_1
= input_radix
;
3040 error (_("Nonsense input radix ``decimal %u''; input radix unchanged."),
3043 input_radix_1
= input_radix
= radix
;
3046 printf_filtered (_("Input radix now set to "
3047 "decimal %u, hex %x, octal %o.\n"),
3048 radix
, radix
, radix
);
3052 /* The 'set output-radix' command writes to this auxiliary variable.
3053 If the requested radix is valid, OUTPUT_RADIX is updated,
3054 otherwise, it is left unchanged. */
3056 static unsigned output_radix_1
= 10;
3059 set_output_radix (char *args
, int from_tty
, struct cmd_list_element
*c
)
3061 set_output_radix_1 (from_tty
, output_radix_1
);
3065 set_output_radix_1 (int from_tty
, unsigned radix
)
3067 /* Validate the radix and disallow ones that we aren't prepared to
3068 handle correctly, leaving the radix unchanged. */
3072 user_print_options
.output_format
= 'x'; /* hex */
3075 user_print_options
.output_format
= 0; /* decimal */
3078 user_print_options
.output_format
= 'o'; /* octal */
3081 output_radix_1
= output_radix
;
3082 error (_("Unsupported output radix ``decimal %u''; "
3083 "output radix unchanged."),
3086 output_radix_1
= output_radix
= radix
;
3089 printf_filtered (_("Output radix now set to "
3090 "decimal %u, hex %x, octal %o.\n"),
3091 radix
, radix
, radix
);
3095 /* Set both the input and output radix at once. Try to set the output radix
3096 first, since it has the most restrictive range. An radix that is valid as
3097 an output radix is also valid as an input radix.
3099 It may be useful to have an unusual input radix. If the user wishes to
3100 set an input radix that is not valid as an output radix, he needs to use
3101 the 'set input-radix' command. */
3104 set_radix (char *arg
, int from_tty
)
3108 radix
= (arg
== NULL
) ? 10 : parse_and_eval_long (arg
);
3109 set_output_radix_1 (0, radix
);
3110 set_input_radix_1 (0, radix
);
3113 printf_filtered (_("Input and output radices now set to "
3114 "decimal %u, hex %x, octal %o.\n"),
3115 radix
, radix
, radix
);
3119 /* Show both the input and output radices. */
3122 show_radix (char *arg
, int from_tty
)
3126 if (input_radix
== output_radix
)
3128 printf_filtered (_("Input and output radices set to "
3129 "decimal %u, hex %x, octal %o.\n"),
3130 input_radix
, input_radix
, input_radix
);
3134 printf_filtered (_("Input radix set to decimal "
3135 "%u, hex %x, octal %o.\n"),
3136 input_radix
, input_radix
, input_radix
);
3137 printf_filtered (_("Output radix set to decimal "
3138 "%u, hex %x, octal %o.\n"),
3139 output_radix
, output_radix
, output_radix
);
3146 set_print (char *arg
, int from_tty
)
3149 "\"set print\" must be followed by the name of a print subcommand.\n");
3150 help_list (setprintlist
, "set print ", all_commands
, gdb_stdout
);
3154 show_print (char *args
, int from_tty
)
3156 cmd_show_list (showprintlist
, from_tty
, "");
3160 set_print_raw (char *arg
, int from_tty
)
3163 "\"set print raw\" must be followed by the name of a \"print raw\" subcommand.\n");
3164 help_list (setprintrawlist
, "set print raw ", all_commands
, gdb_stdout
);
3168 show_print_raw (char *args
, int from_tty
)
3170 cmd_show_list (showprintrawlist
, from_tty
, "");
3175 _initialize_valprint (void)
3177 add_prefix_cmd ("print", no_class
, set_print
,
3178 _("Generic command for setting how things print."),
3179 &setprintlist
, "set print ", 0, &setlist
);
3180 add_alias_cmd ("p", "print", no_class
, 1, &setlist
);
3181 /* Prefer set print to set prompt. */
3182 add_alias_cmd ("pr", "print", no_class
, 1, &setlist
);
3184 add_prefix_cmd ("print", no_class
, show_print
,
3185 _("Generic command for showing print settings."),
3186 &showprintlist
, "show print ", 0, &showlist
);
3187 add_alias_cmd ("p", "print", no_class
, 1, &showlist
);
3188 add_alias_cmd ("pr", "print", no_class
, 1, &showlist
);
3190 add_prefix_cmd ("raw", no_class
, set_print_raw
,
3192 Generic command for setting what things to print in \"raw\" mode."),
3193 &setprintrawlist
, "set print raw ", 0, &setprintlist
);
3194 add_prefix_cmd ("raw", no_class
, show_print_raw
,
3195 _("Generic command for showing \"print raw\" settings."),
3196 &showprintrawlist
, "show print raw ", 0, &showprintlist
);
3198 add_setshow_uinteger_cmd ("elements", no_class
,
3199 &user_print_options
.print_max
, _("\
3200 Set limit on string chars or array elements to print."), _("\
3201 Show limit on string chars or array elements to print."), _("\
3202 \"set print elements unlimited\" causes there to be no limit."),
3205 &setprintlist
, &showprintlist
);
3207 add_setshow_boolean_cmd ("null-stop", no_class
,
3208 &user_print_options
.stop_print_at_null
, _("\
3209 Set printing of char arrays to stop at first null char."), _("\
3210 Show printing of char arrays to stop at first null char."), NULL
,
3212 show_stop_print_at_null
,
3213 &setprintlist
, &showprintlist
);
3215 add_setshow_uinteger_cmd ("repeats", no_class
,
3216 &user_print_options
.repeat_count_threshold
, _("\
3217 Set threshold for repeated print elements."), _("\
3218 Show threshold for repeated print elements."), _("\
3219 \"set print repeats unlimited\" causes all elements to be individually printed."),
3221 show_repeat_count_threshold
,
3222 &setprintlist
, &showprintlist
);
3224 add_setshow_boolean_cmd ("pretty", class_support
,
3225 &user_print_options
.prettyformat_structs
, _("\
3226 Set pretty formatting of structures."), _("\
3227 Show pretty formatting of structures."), NULL
,
3229 show_prettyformat_structs
,
3230 &setprintlist
, &showprintlist
);
3232 add_setshow_boolean_cmd ("union", class_support
,
3233 &user_print_options
.unionprint
, _("\
3234 Set printing of unions interior to structures."), _("\
3235 Show printing of unions interior to structures."), NULL
,
3238 &setprintlist
, &showprintlist
);
3240 add_setshow_boolean_cmd ("array", class_support
,
3241 &user_print_options
.prettyformat_arrays
, _("\
3242 Set pretty formatting of arrays."), _("\
3243 Show pretty formatting of arrays."), NULL
,
3245 show_prettyformat_arrays
,
3246 &setprintlist
, &showprintlist
);
3248 add_setshow_boolean_cmd ("address", class_support
,
3249 &user_print_options
.addressprint
, _("\
3250 Set printing of addresses."), _("\
3251 Show printing of addresses."), NULL
,
3254 &setprintlist
, &showprintlist
);
3256 add_setshow_boolean_cmd ("symbol", class_support
,
3257 &user_print_options
.symbol_print
, _("\
3258 Set printing of symbol names when printing pointers."), _("\
3259 Show printing of symbol names when printing pointers."),
3262 &setprintlist
, &showprintlist
);
3264 add_setshow_zuinteger_cmd ("input-radix", class_support
, &input_radix_1
,
3266 Set default input radix for entering numbers."), _("\
3267 Show default input radix for entering numbers."), NULL
,
3270 &setlist
, &showlist
);
3272 add_setshow_zuinteger_cmd ("output-radix", class_support
, &output_radix_1
,
3274 Set default output radix for printing of values."), _("\
3275 Show default output radix for printing of values."), NULL
,
3278 &setlist
, &showlist
);
3280 /* The "set radix" and "show radix" commands are special in that
3281 they are like normal set and show commands but allow two normally
3282 independent variables to be either set or shown with a single
3283 command. So the usual deprecated_add_set_cmd() and [deleted]
3284 add_show_from_set() commands aren't really appropriate. */
3285 /* FIXME: i18n: With the new add_setshow_integer command, that is no
3286 longer true - show can display anything. */
3287 add_cmd ("radix", class_support
, set_radix
, _("\
3288 Set default input and output number radices.\n\
3289 Use 'set input-radix' or 'set output-radix' to independently set each.\n\
3290 Without an argument, sets both radices back to the default value of 10."),
3292 add_cmd ("radix", class_support
, show_radix
, _("\
3293 Show the default input and output number radices.\n\
3294 Use 'show input-radix' or 'show output-radix' to independently show each."),
3297 add_setshow_boolean_cmd ("array-indexes", class_support
,
3298 &user_print_options
.print_array_indexes
, _("\
3299 Set printing of array indexes."), _("\
3300 Show printing of array indexes"), NULL
, NULL
, show_print_array_indexes
,
3301 &setprintlist
, &showprintlist
);