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/>. */
32 #include "extension.h"
34 #include "gdb_obstack.h"
36 #include "typeprint.h"
39 #include "common/byte-vector.h"
41 /* Maximum number of wchars returned from wchar_iterate. */
44 /* A convenience macro to compute the size of a wchar_t buffer containing X
46 #define WCHAR_BUFLEN(X) ((X) * sizeof (gdb_wchar_t))
48 /* Character buffer size saved while iterating over wchars. */
49 #define WCHAR_BUFLEN_MAX WCHAR_BUFLEN (MAX_WCHARS)
51 /* A structure to encapsulate state information from iterated
52 character conversions. */
53 struct converted_character
55 /* The number of characters converted. */
58 /* The result of the conversion. See charset.h for more. */
59 enum wchar_iterate_result result
;
61 /* The (saved) converted character(s). */
62 gdb_wchar_t chars
[WCHAR_BUFLEN_MAX
];
64 /* The first converted target byte. */
67 /* The number of bytes converted. */
70 /* How many times this character(s) is repeated. */
74 typedef struct converted_character converted_character_d
;
75 DEF_VEC_O (converted_character_d
);
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 (char *, int, struct cmd_list_element
*);
88 static void set_input_radix_1 (int, unsigned);
90 static void set_output_radix (char *, int, struct cmd_list_element
*);
92 static void set_output_radix_1 (int, unsigned);
94 static void val_print_type_code_flags (struct type
*type
,
95 const gdb_byte
*valaddr
,
96 struct ui_file
*stream
);
98 #define PRINT_MAX_DEFAULT 200 /* Start print_max off at this value. */
100 struct value_print_options user_print_options
=
102 Val_prettyformat_default
, /* prettyformat */
103 0, /* prettyformat_arrays */
104 0, /* prettyformat_structs */
107 1, /* addressprint */
109 PRINT_MAX_DEFAULT
, /* print_max */
110 10, /* repeat_count_threshold */
111 0, /* output_format */
113 0, /* stop_print_at_null */
114 0, /* print_array_indexes */
116 1, /* static_field_print */
117 1, /* pascal_static_field_print */
123 /* Initialize *OPTS to be a copy of the user print options. */
125 get_user_print_options (struct value_print_options
*opts
)
127 *opts
= user_print_options
;
130 /* Initialize *OPTS to be a copy of the user print options, but with
131 pretty-formatting disabled. */
133 get_no_prettyformat_print_options (struct value_print_options
*opts
)
135 *opts
= user_print_options
;
136 opts
->prettyformat
= Val_no_prettyformat
;
139 /* Initialize *OPTS to be a copy of the user print options, but using
140 FORMAT as the formatting option. */
142 get_formatted_print_options (struct value_print_options
*opts
,
145 *opts
= user_print_options
;
146 opts
->format
= format
;
150 show_print_max (struct ui_file
*file
, int from_tty
,
151 struct cmd_list_element
*c
, const char *value
)
153 fprintf_filtered (file
,
154 _("Limit on string chars or array "
155 "elements to print is %s.\n"),
160 /* Default input and output radixes, and output format letter. */
162 unsigned input_radix
= 10;
164 show_input_radix (struct ui_file
*file
, int from_tty
,
165 struct cmd_list_element
*c
, const char *value
)
167 fprintf_filtered (file
,
168 _("Default input radix for entering numbers is %s.\n"),
172 unsigned output_radix
= 10;
174 show_output_radix (struct ui_file
*file
, int from_tty
,
175 struct cmd_list_element
*c
, const char *value
)
177 fprintf_filtered (file
,
178 _("Default output radix for printing of values is %s.\n"),
182 /* By default we print arrays without printing the index of each element in
183 the array. This behavior can be changed by setting PRINT_ARRAY_INDEXES. */
186 show_print_array_indexes (struct ui_file
*file
, int from_tty
,
187 struct cmd_list_element
*c
, const char *value
)
189 fprintf_filtered (file
, _("Printing of array indexes is %s.\n"), value
);
192 /* Print repeat counts if there are more than this many repetitions of an
193 element in an array. Referenced by the low level language dependent
197 show_repeat_count_threshold (struct ui_file
*file
, int from_tty
,
198 struct cmd_list_element
*c
, const char *value
)
200 fprintf_filtered (file
, _("Threshold for repeated print elements is %s.\n"),
204 /* If nonzero, stops printing of char arrays at first null. */
207 show_stop_print_at_null (struct ui_file
*file
, int from_tty
,
208 struct cmd_list_element
*c
, const char *value
)
210 fprintf_filtered (file
,
211 _("Printing of char arrays to stop "
212 "at first null char is %s.\n"),
216 /* Controls pretty printing of structures. */
219 show_prettyformat_structs (struct ui_file
*file
, int from_tty
,
220 struct cmd_list_element
*c
, const char *value
)
222 fprintf_filtered (file
, _("Pretty formatting of structures is %s.\n"), value
);
225 /* Controls pretty printing of arrays. */
228 show_prettyformat_arrays (struct ui_file
*file
, int from_tty
,
229 struct cmd_list_element
*c
, const char *value
)
231 fprintf_filtered (file
, _("Pretty formatting of arrays is %s.\n"), value
);
234 /* If nonzero, causes unions inside structures or other unions to be
238 show_unionprint (struct ui_file
*file
, int from_tty
,
239 struct cmd_list_element
*c
, const char *value
)
241 fprintf_filtered (file
,
242 _("Printing of unions interior to structures is %s.\n"),
246 /* If nonzero, causes machine addresses to be printed in certain contexts. */
249 show_addressprint (struct ui_file
*file
, int from_tty
,
250 struct cmd_list_element
*c
, const char *value
)
252 fprintf_filtered (file
, _("Printing of addresses is %s.\n"), value
);
256 show_symbol_print (struct ui_file
*file
, int from_tty
,
257 struct cmd_list_element
*c
, const char *value
)
259 fprintf_filtered (file
,
260 _("Printing of symbols when printing pointers is %s.\n"),
266 /* A helper function for val_print. When printing in "summary" mode,
267 we want to print scalar arguments, but not aggregate arguments.
268 This function distinguishes between the two. */
271 val_print_scalar_type_p (struct type
*type
)
273 type
= check_typedef (type
);
274 while (TYPE_IS_REFERENCE (type
))
276 type
= TYPE_TARGET_TYPE (type
);
277 type
= check_typedef (type
);
279 switch (TYPE_CODE (type
))
281 case TYPE_CODE_ARRAY
:
282 case TYPE_CODE_STRUCT
:
283 case TYPE_CODE_UNION
:
285 case TYPE_CODE_STRING
:
292 /* See its definition in value.h. */
295 valprint_check_validity (struct ui_file
*stream
,
297 LONGEST embedded_offset
,
298 const struct value
*val
)
300 type
= check_typedef (type
);
302 if (type_not_associated (type
))
304 val_print_not_associated (stream
);
308 if (type_not_allocated (type
))
310 val_print_not_allocated (stream
);
314 if (TYPE_CODE (type
) != TYPE_CODE_UNION
315 && TYPE_CODE (type
) != TYPE_CODE_STRUCT
316 && TYPE_CODE (type
) != TYPE_CODE_ARRAY
)
318 if (value_bits_any_optimized_out (val
,
319 TARGET_CHAR_BIT
* embedded_offset
,
320 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
322 val_print_optimized_out (val
, stream
);
326 if (value_bits_synthetic_pointer (val
, TARGET_CHAR_BIT
* embedded_offset
,
327 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
329 const int is_ref
= TYPE_CODE (type
) == TYPE_CODE_REF
;
330 int ref_is_addressable
= 0;
334 const struct value
*deref_val
= coerce_ref_if_computed (val
);
336 if (deref_val
!= NULL
)
337 ref_is_addressable
= value_lval_const (deref_val
) == lval_memory
;
340 if (!is_ref
|| !ref_is_addressable
)
341 fputs_filtered (_("<synthetic pointer>"), stream
);
343 /* C++ references should be valid even if they're synthetic. */
347 if (!value_bytes_available (val
, embedded_offset
, TYPE_LENGTH (type
)))
349 val_print_unavailable (stream
);
358 val_print_optimized_out (const struct value
*val
, struct ui_file
*stream
)
360 if (val
!= NULL
&& value_lval_const (val
) == lval_register
)
361 val_print_not_saved (stream
);
363 fprintf_filtered (stream
, _("<optimized out>"));
367 val_print_not_saved (struct ui_file
*stream
)
369 fprintf_filtered (stream
, _("<not saved>"));
373 val_print_unavailable (struct ui_file
*stream
)
375 fprintf_filtered (stream
, _("<unavailable>"));
379 val_print_invalid_address (struct ui_file
*stream
)
381 fprintf_filtered (stream
, _("<invalid address>"));
384 /* Print a pointer based on the type of its target.
386 Arguments to this functions are roughly the same as those in
387 generic_val_print. A difference is that ADDRESS is the address to print,
388 with embedded_offset already added. ELTTYPE represents
389 the pointed type after check_typedef. */
392 print_unpacked_pointer (struct type
*type
, struct type
*elttype
,
393 CORE_ADDR address
, struct ui_file
*stream
,
394 const struct value_print_options
*options
)
396 struct gdbarch
*gdbarch
= get_type_arch (type
);
398 if (TYPE_CODE (elttype
) == TYPE_CODE_FUNC
)
400 /* Try to print what function it points to. */
401 print_function_pointer_address (options
, gdbarch
, address
, stream
);
405 if (options
->symbol_print
)
406 print_address_demangle (options
, gdbarch
, address
, stream
, demangle
);
407 else if (options
->addressprint
)
408 fputs_filtered (paddress (gdbarch
, address
), stream
);
411 /* generic_val_print helper for TYPE_CODE_ARRAY. */
414 generic_val_print_array (struct type
*type
,
415 int embedded_offset
, CORE_ADDR address
,
416 struct ui_file
*stream
, int recurse
,
417 struct value
*original_value
,
418 const struct value_print_options
*options
,
420 generic_val_print_decorations
*decorations
)
422 struct type
*unresolved_elttype
= TYPE_TARGET_TYPE (type
);
423 struct type
*elttype
= check_typedef (unresolved_elttype
);
425 if (TYPE_LENGTH (type
) > 0 && TYPE_LENGTH (unresolved_elttype
) > 0)
427 LONGEST low_bound
, high_bound
;
429 if (!get_array_bounds (type
, &low_bound
, &high_bound
))
430 error (_("Could not determine the array high bound"));
432 if (options
->prettyformat_arrays
)
434 print_spaces_filtered (2 + 2 * recurse
, stream
);
437 fputs_filtered (decorations
->array_start
, stream
);
438 val_print_array_elements (type
, embedded_offset
,
440 recurse
, original_value
, options
, 0);
441 fputs_filtered (decorations
->array_end
, stream
);
445 /* Array of unspecified length: treat like pointer to first elt. */
446 print_unpacked_pointer (type
, elttype
, address
+ embedded_offset
, stream
,
452 /* generic_val_print helper for TYPE_CODE_PTR. */
455 generic_val_print_ptr (struct type
*type
,
456 int embedded_offset
, struct ui_file
*stream
,
457 struct value
*original_value
,
458 const struct value_print_options
*options
)
460 struct gdbarch
*gdbarch
= get_type_arch (type
);
461 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
463 if (options
->format
&& options
->format
!= 's')
465 val_print_scalar_formatted (type
, embedded_offset
,
466 original_value
, options
, 0, stream
);
470 struct type
*unresolved_elttype
= TYPE_TARGET_TYPE(type
);
471 struct type
*elttype
= check_typedef (unresolved_elttype
);
472 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
473 CORE_ADDR addr
= unpack_pointer (type
,
474 valaddr
+ embedded_offset
* unit_size
);
476 print_unpacked_pointer (type
, elttype
, addr
, stream
, options
);
481 /* generic_val_print helper for TYPE_CODE_MEMBERPTR. */
484 generic_val_print_memberptr (struct type
*type
,
485 int embedded_offset
, struct ui_file
*stream
,
486 struct value
*original_value
,
487 const struct value_print_options
*options
)
489 val_print_scalar_formatted (type
, embedded_offset
,
490 original_value
, options
, 0, stream
);
493 /* Print '@' followed by the address contained in ADDRESS_BUFFER. */
496 print_ref_address (struct type
*type
, const gdb_byte
*address_buffer
,
497 int embedded_offset
, struct ui_file
*stream
)
499 struct gdbarch
*gdbarch
= get_type_arch (type
);
501 if (address_buffer
!= NULL
)
504 = extract_typed_address (address_buffer
+ embedded_offset
, type
);
506 fprintf_filtered (stream
, "@");
507 fputs_filtered (paddress (gdbarch
, address
), stream
);
509 /* Else: we have a non-addressable value, such as a DW_AT_const_value. */
512 /* If VAL is addressable, return the value contents buffer of a value that
513 represents a pointer to VAL. Otherwise return NULL. */
515 static const gdb_byte
*
516 get_value_addr_contents (struct value
*deref_val
)
518 gdb_assert (deref_val
!= NULL
);
520 if (value_lval_const (deref_val
) == lval_memory
)
521 return value_contents_for_printing_const (value_addr (deref_val
));
524 /* We have a non-addressable value, such as a DW_AT_const_value. */
529 /* generic_val_print helper for TYPE_CODE_{RVALUE_,}REF. */
532 generic_val_print_ref (struct type
*type
,
533 int embedded_offset
, struct ui_file
*stream
, int recurse
,
534 struct value
*original_value
,
535 const struct value_print_options
*options
)
537 struct type
*elttype
= check_typedef (TYPE_TARGET_TYPE (type
));
538 struct value
*deref_val
= NULL
;
539 const int value_is_synthetic
540 = value_bits_synthetic_pointer (original_value
,
541 TARGET_CHAR_BIT
* embedded_offset
,
542 TARGET_CHAR_BIT
* TYPE_LENGTH (type
));
543 const int must_coerce_ref
= ((options
->addressprint
&& value_is_synthetic
)
544 || options
->deref_ref
);
545 const int type_is_defined
= TYPE_CODE (elttype
) != TYPE_CODE_UNDEF
;
546 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
548 if (must_coerce_ref
&& type_is_defined
)
550 deref_val
= coerce_ref_if_computed (original_value
);
552 if (deref_val
!= NULL
)
554 /* More complicated computed references are not supported. */
555 gdb_assert (embedded_offset
== 0);
558 deref_val
= value_at (TYPE_TARGET_TYPE (type
),
559 unpack_pointer (type
, valaddr
+ embedded_offset
));
561 /* Else, original_value isn't a synthetic reference or we don't have to print
562 the reference's contents.
564 Notice that for references to TYPE_CODE_STRUCT, 'set print object on' will
565 cause original_value to be a not_lval instead of an lval_computed,
566 which will make value_bits_synthetic_pointer return false.
567 This happens because if options->objectprint is true, c_value_print will
568 overwrite original_value's contents with the result of coercing
569 the reference through value_addr, and then set its type back to
570 TYPE_CODE_REF. In that case we don't have to coerce the reference again;
571 we can simply treat it as non-synthetic and move on. */
573 if (options
->addressprint
)
575 const gdb_byte
*address
= (value_is_synthetic
&& type_is_defined
576 ? get_value_addr_contents (deref_val
)
579 print_ref_address (type
, address
, embedded_offset
, stream
);
581 if (options
->deref_ref
)
582 fputs_filtered (": ", stream
);
585 if (options
->deref_ref
)
588 common_val_print (deref_val
, stream
, recurse
, options
,
591 fputs_filtered ("???", stream
);
595 /* Helper function for generic_val_print_enum.
596 This is also used to print enums in TYPE_CODE_FLAGS values. */
599 generic_val_print_enum_1 (struct type
*type
, LONGEST val
,
600 struct ui_file
*stream
)
605 len
= TYPE_NFIELDS (type
);
606 for (i
= 0; i
< len
; i
++)
609 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
616 fputs_filtered (TYPE_FIELD_NAME (type
, i
), stream
);
618 else if (TYPE_FLAG_ENUM (type
))
622 /* We have a "flag" enum, so we try to decompose it into
623 pieces as appropriate. A flag enum has disjoint
624 constants by definition. */
625 fputs_filtered ("(", stream
);
626 for (i
= 0; i
< len
; ++i
)
630 if ((val
& TYPE_FIELD_ENUMVAL (type
, i
)) != 0)
633 fputs_filtered (" | ", stream
);
636 val
&= ~TYPE_FIELD_ENUMVAL (type
, i
);
637 fputs_filtered (TYPE_FIELD_NAME (type
, i
), stream
);
641 if (first
|| val
!= 0)
644 fputs_filtered (" | ", stream
);
645 fputs_filtered ("unknown: ", stream
);
646 print_longest (stream
, 'd', 0, val
);
649 fputs_filtered (")", stream
);
652 print_longest (stream
, 'd', 0, val
);
655 /* generic_val_print helper for TYPE_CODE_ENUM. */
658 generic_val_print_enum (struct type
*type
,
659 int embedded_offset
, struct ui_file
*stream
,
660 struct value
*original_value
,
661 const struct value_print_options
*options
)
664 struct gdbarch
*gdbarch
= get_type_arch (type
);
665 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
669 val_print_scalar_formatted (type
, embedded_offset
,
670 original_value
, options
, 0, stream
);
674 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
676 val
= unpack_long (type
, valaddr
+ embedded_offset
* unit_size
);
678 generic_val_print_enum_1 (type
, val
, stream
);
682 /* generic_val_print helper for TYPE_CODE_FLAGS. */
685 generic_val_print_flags (struct type
*type
,
686 int embedded_offset
, struct ui_file
*stream
,
687 struct value
*original_value
,
688 const struct value_print_options
*options
)
692 val_print_scalar_formatted (type
, embedded_offset
, original_value
,
696 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
698 val_print_type_code_flags (type
, valaddr
+ embedded_offset
, stream
);
702 /* generic_val_print helper for TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
705 generic_val_print_func (struct type
*type
,
706 int embedded_offset
, CORE_ADDR address
,
707 struct ui_file
*stream
,
708 struct value
*original_value
,
709 const struct value_print_options
*options
)
711 struct gdbarch
*gdbarch
= get_type_arch (type
);
715 val_print_scalar_formatted (type
, embedded_offset
,
716 original_value
, options
, 0, stream
);
720 /* FIXME, we should consider, at least for ANSI C language,
721 eliminating the distinction made between FUNCs and POINTERs
723 fprintf_filtered (stream
, "{");
724 type_print (type
, "", stream
, -1);
725 fprintf_filtered (stream
, "} ");
726 /* Try to print what function it points to, and its address. */
727 print_address_demangle (options
, gdbarch
, address
, stream
, demangle
);
731 /* generic_val_print helper for TYPE_CODE_BOOL. */
734 generic_val_print_bool (struct type
*type
,
735 int embedded_offset
, struct ui_file
*stream
,
736 struct value
*original_value
,
737 const struct value_print_options
*options
,
738 const struct generic_val_print_decorations
*decorations
)
741 struct gdbarch
*gdbarch
= get_type_arch (type
);
742 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
744 if (options
->format
|| options
->output_format
)
746 struct value_print_options opts
= *options
;
747 opts
.format
= (options
->format
? options
->format
748 : options
->output_format
);
749 val_print_scalar_formatted (type
, embedded_offset
,
750 original_value
, &opts
, 0, stream
);
754 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
756 val
= unpack_long (type
, valaddr
+ embedded_offset
* unit_size
);
758 fputs_filtered (decorations
->false_name
, stream
);
760 fputs_filtered (decorations
->true_name
, stream
);
762 print_longest (stream
, 'd', 0, val
);
766 /* generic_val_print helper for TYPE_CODE_INT. */
769 generic_val_print_int (struct type
*type
,
770 int embedded_offset
, struct ui_file
*stream
,
771 struct value
*original_value
,
772 const struct value_print_options
*options
)
774 struct value_print_options opts
= *options
;
776 opts
.format
= (options
->format
? options
->format
777 : options
->output_format
);
778 val_print_scalar_formatted (type
, embedded_offset
,
779 original_value
, &opts
, 0, stream
);
782 /* generic_val_print helper for TYPE_CODE_CHAR. */
785 generic_val_print_char (struct type
*type
, struct type
*unresolved_type
,
787 struct ui_file
*stream
,
788 struct value
*original_value
,
789 const struct value_print_options
*options
)
792 struct gdbarch
*gdbarch
= get_type_arch (type
);
793 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
795 if (options
->format
|| options
->output_format
)
797 struct value_print_options opts
= *options
;
799 opts
.format
= (options
->format
? options
->format
800 : options
->output_format
);
801 val_print_scalar_formatted (type
, embedded_offset
,
802 original_value
, &opts
, 0, stream
);
806 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
808 val
= unpack_long (type
, valaddr
+ embedded_offset
* unit_size
);
809 if (TYPE_UNSIGNED (type
))
810 fprintf_filtered (stream
, "%u", (unsigned int) val
);
812 fprintf_filtered (stream
, "%d", (int) val
);
813 fputs_filtered (" ", stream
);
814 LA_PRINT_CHAR (val
, unresolved_type
, stream
);
818 /* generic_val_print helper for TYPE_CODE_FLT and TYPE_CODE_DECFLOAT. */
821 generic_val_print_float (struct type
*type
,
822 int embedded_offset
, struct ui_file
*stream
,
823 struct value
*original_value
,
824 const struct value_print_options
*options
)
826 struct gdbarch
*gdbarch
= get_type_arch (type
);
827 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
831 val_print_scalar_formatted (type
, embedded_offset
,
832 original_value
, options
, 0, stream
);
836 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
838 print_floating (valaddr
+ embedded_offset
* unit_size
, type
, stream
);
842 /* generic_val_print helper for TYPE_CODE_COMPLEX. */
845 generic_val_print_complex (struct type
*type
,
846 int embedded_offset
, struct ui_file
*stream
,
847 struct value
*original_value
,
848 const struct value_print_options
*options
,
849 const struct generic_val_print_decorations
852 struct gdbarch
*gdbarch
= get_type_arch (type
);
853 int unit_size
= gdbarch_addressable_memory_unit_size (gdbarch
);
854 const gdb_byte
*valaddr
= value_contents_for_printing (original_value
);
856 fprintf_filtered (stream
, "%s", decorations
->complex_prefix
);
858 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
),
859 embedded_offset
, original_value
, options
, 0,
862 print_floating (valaddr
+ embedded_offset
* unit_size
,
863 TYPE_TARGET_TYPE (type
), stream
);
864 fprintf_filtered (stream
, "%s", decorations
->complex_infix
);
866 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
),
868 + type_length_units (TYPE_TARGET_TYPE (type
)),
869 original_value
, options
, 0, stream
);
871 print_floating (valaddr
+ embedded_offset
* unit_size
872 + TYPE_LENGTH (TYPE_TARGET_TYPE (type
)),
873 TYPE_TARGET_TYPE (type
), stream
);
874 fprintf_filtered (stream
, "%s", decorations
->complex_suffix
);
877 /* A generic val_print that is suitable for use by language
878 implementations of the la_val_print method. This function can
879 handle most type codes, though not all, notably exception
880 TYPE_CODE_UNION and TYPE_CODE_STRUCT, which must be implemented by
883 Most arguments are as to val_print.
885 The additional DECORATIONS argument can be used to customize the
886 output in some small, language-specific ways. */
889 generic_val_print (struct type
*type
,
890 int embedded_offset
, CORE_ADDR address
,
891 struct ui_file
*stream
, int recurse
,
892 struct value
*original_value
,
893 const struct value_print_options
*options
,
894 const struct generic_val_print_decorations
*decorations
)
896 struct type
*unresolved_type
= type
;
898 type
= check_typedef (type
);
899 switch (TYPE_CODE (type
))
901 case TYPE_CODE_ARRAY
:
902 generic_val_print_array (type
, embedded_offset
, address
, stream
,
903 recurse
, original_value
, options
, decorations
);
906 case TYPE_CODE_MEMBERPTR
:
907 generic_val_print_memberptr (type
, embedded_offset
, stream
,
908 original_value
, options
);
912 generic_val_print_ptr (type
, embedded_offset
, stream
,
913 original_value
, options
);
917 case TYPE_CODE_RVALUE_REF
:
918 generic_val_print_ref (type
, embedded_offset
, stream
, recurse
,
919 original_value
, options
);
923 generic_val_print_enum (type
, embedded_offset
, stream
,
924 original_value
, options
);
927 case TYPE_CODE_FLAGS
:
928 generic_val_print_flags (type
, embedded_offset
, stream
,
929 original_value
, options
);
933 case TYPE_CODE_METHOD
:
934 generic_val_print_func (type
, embedded_offset
, address
, stream
,
935 original_value
, options
);
939 generic_val_print_bool (type
, embedded_offset
, stream
,
940 original_value
, options
, decorations
);
943 case TYPE_CODE_RANGE
:
944 /* FIXME: create_static_range_type does not set the unsigned bit in a
945 range type (I think it probably should copy it from the
946 target type), so we won't print values which are too large to
947 fit in a signed integer correctly. */
948 /* FIXME: Doesn't handle ranges of enums correctly. (Can't just
949 print with the target type, though, because the size of our
950 type and the target type might differ). */
955 generic_val_print_int (type
, embedded_offset
, stream
,
956 original_value
, options
);
960 generic_val_print_char (type
, unresolved_type
, embedded_offset
,
961 stream
, original_value
, options
);
965 case TYPE_CODE_DECFLOAT
:
966 generic_val_print_float (type
, embedded_offset
, stream
,
967 original_value
, options
);
971 fputs_filtered (decorations
->void_name
, stream
);
974 case TYPE_CODE_ERROR
:
975 fprintf_filtered (stream
, "%s", TYPE_ERROR_NAME (type
));
978 case TYPE_CODE_UNDEF
:
979 /* This happens (without TYPE_STUB set) on systems which don't use
980 dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
981 and no complete type for struct foo in that file. */
982 fprintf_filtered (stream
, _("<incomplete type>"));
985 case TYPE_CODE_COMPLEX
:
986 generic_val_print_complex (type
, embedded_offset
, stream
,
987 original_value
, options
, decorations
);
990 case TYPE_CODE_UNION
:
991 case TYPE_CODE_STRUCT
:
992 case TYPE_CODE_METHODPTR
:
994 error (_("Unhandled type code %d in symbol table."),
1000 /* Print using the given LANGUAGE the data of type TYPE located at
1001 VAL's contents buffer + EMBEDDED_OFFSET (within GDB), which came
1002 from the inferior at address ADDRESS + EMBEDDED_OFFSET, onto
1003 stdio stream STREAM according to OPTIONS. VAL is the whole object
1004 that came from ADDRESS.
1006 The language printers will pass down an adjusted EMBEDDED_OFFSET to
1007 further helper subroutines as subfields of TYPE are printed. In
1008 such cases, VAL is passed down unadjusted, so
1009 that VAL can be queried for metadata about the contents data being
1010 printed, using EMBEDDED_OFFSET as an offset into VAL's contents
1011 buffer. For example: "has this field been optimized out", or "I'm
1012 printing an object while inspecting a traceframe; has this
1013 particular piece of data been collected?".
1015 RECURSE indicates the amount of indentation to supply before
1016 continuation lines; this amount is roughly twice the value of
1020 val_print (struct type
*type
, LONGEST embedded_offset
,
1021 CORE_ADDR address
, struct ui_file
*stream
, int recurse
,
1023 const struct value_print_options
*options
,
1024 const struct language_defn
*language
)
1027 struct value_print_options local_opts
= *options
;
1028 struct type
*real_type
= check_typedef (type
);
1030 if (local_opts
.prettyformat
== Val_prettyformat_default
)
1031 local_opts
.prettyformat
= (local_opts
.prettyformat_structs
1032 ? Val_prettyformat
: Val_no_prettyformat
);
1036 /* Ensure that the type is complete and not just a stub. If the type is
1037 only a stub and we can't find and substitute its complete type, then
1038 print appropriate string and return. */
1040 if (TYPE_STUB (real_type
))
1042 fprintf_filtered (stream
, _("<incomplete type>"));
1047 if (!valprint_check_validity (stream
, real_type
, embedded_offset
, val
))
1052 ret
= apply_ext_lang_val_pretty_printer (type
, embedded_offset
,
1053 address
, stream
, recurse
,
1054 val
, options
, language
);
1059 /* Handle summary mode. If the value is a scalar, print it;
1060 otherwise, print an ellipsis. */
1061 if (options
->summary
&& !val_print_scalar_type_p (type
))
1063 fprintf_filtered (stream
, "...");
1069 language
->la_val_print (type
, embedded_offset
, address
,
1070 stream
, recurse
, val
,
1073 CATCH (except
, RETURN_MASK_ERROR
)
1075 fprintf_filtered (stream
, _("<error reading variable>"));
1080 /* Check whether the value VAL is printable. Return 1 if it is;
1081 return 0 and print an appropriate error message to STREAM according to
1082 OPTIONS if it is not. */
1085 value_check_printable (struct value
*val
, struct ui_file
*stream
,
1086 const struct value_print_options
*options
)
1090 fprintf_filtered (stream
, _("<address of value unknown>"));
1094 if (value_entirely_optimized_out (val
))
1096 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1097 fprintf_filtered (stream
, "...");
1099 val_print_optimized_out (val
, stream
);
1103 if (value_entirely_unavailable (val
))
1105 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
1106 fprintf_filtered (stream
, "...");
1108 val_print_unavailable (stream
);
1112 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_INTERNAL_FUNCTION
)
1114 fprintf_filtered (stream
, _("<internal function %s>"),
1115 value_internal_function_name (val
));
1119 if (type_not_associated (value_type (val
)))
1121 val_print_not_associated (stream
);
1125 if (type_not_allocated (value_type (val
)))
1127 val_print_not_allocated (stream
);
1134 /* Print using the given LANGUAGE the value VAL onto stream STREAM according
1137 This is a preferable interface to val_print, above, because it uses
1138 GDB's value mechanism. */
1141 common_val_print (struct value
*val
, struct ui_file
*stream
, int recurse
,
1142 const struct value_print_options
*options
,
1143 const struct language_defn
*language
)
1145 if (!value_check_printable (val
, stream
, options
))
1148 if (language
->la_language
== language_ada
)
1149 /* The value might have a dynamic type, which would cause trouble
1150 below when trying to extract the value contents (since the value
1151 size is determined from the type size which is unknown). So
1152 get a fixed representation of our value. */
1153 val
= ada_to_fixed_value (val
);
1155 if (value_lazy (val
))
1156 value_fetch_lazy (val
);
1158 val_print (value_type (val
),
1159 value_embedded_offset (val
), value_address (val
),
1161 val
, options
, language
);
1164 /* Print on stream STREAM the value VAL according to OPTIONS. The value
1165 is printed using the current_language syntax. */
1168 value_print (struct value
*val
, struct ui_file
*stream
,
1169 const struct value_print_options
*options
)
1171 if (!value_check_printable (val
, stream
, options
))
1177 = apply_ext_lang_val_pretty_printer (value_type (val
),
1178 value_embedded_offset (val
),
1179 value_address (val
),
1181 val
, options
, current_language
);
1187 LA_VALUE_PRINT (val
, stream
, options
);
1191 val_print_type_code_flags (struct type
*type
, const gdb_byte
*valaddr
,
1192 struct ui_file
*stream
)
1194 ULONGEST val
= unpack_long (type
, valaddr
);
1195 int field
, nfields
= TYPE_NFIELDS (type
);
1196 struct gdbarch
*gdbarch
= get_type_arch (type
);
1197 struct type
*bool_type
= builtin_type (gdbarch
)->builtin_bool
;
1199 fputs_filtered ("[", stream
);
1200 for (field
= 0; field
< nfields
; field
++)
1202 if (TYPE_FIELD_NAME (type
, field
)[0] != '\0')
1204 struct type
*field_type
= TYPE_FIELD_TYPE (type
, field
);
1206 if (field_type
== bool_type
1207 /* We require boolean types here to be one bit wide. This is a
1208 problematic place to notify the user of an internal error
1209 though. Instead just fall through and print the field as an
1211 && TYPE_FIELD_BITSIZE (type
, field
) == 1)
1213 if (val
& ((ULONGEST
)1 << TYPE_FIELD_BITPOS (type
, field
)))
1214 fprintf_filtered (stream
, " %s",
1215 TYPE_FIELD_NAME (type
, field
));
1219 unsigned field_len
= TYPE_FIELD_BITSIZE (type
, field
);
1221 = val
>> (TYPE_FIELD_BITPOS (type
, field
) - field_len
+ 1);
1223 if (field_len
< sizeof (ULONGEST
) * TARGET_CHAR_BIT
)
1224 field_val
&= ((ULONGEST
) 1 << field_len
) - 1;
1225 fprintf_filtered (stream
, " %s=",
1226 TYPE_FIELD_NAME (type
, field
));
1227 if (TYPE_CODE (field_type
) == TYPE_CODE_ENUM
)
1228 generic_val_print_enum_1 (field_type
, field_val
, stream
);
1230 print_longest (stream
, 'd', 0, field_val
);
1234 fputs_filtered (" ]", stream
);
1237 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
1238 according to OPTIONS and SIZE on STREAM. Format i is not supported
1241 This is how the elements of an array or structure are printed
1245 val_print_scalar_formatted (struct type
*type
,
1246 LONGEST embedded_offset
,
1248 const struct value_print_options
*options
,
1250 struct ui_file
*stream
)
1252 struct gdbarch
*arch
= get_type_arch (type
);
1253 int unit_size
= gdbarch_addressable_memory_unit_size (arch
);
1255 gdb_assert (val
!= NULL
);
1257 /* If we get here with a string format, try again without it. Go
1258 all the way back to the language printers, which may call us
1260 if (options
->format
== 's')
1262 struct value_print_options opts
= *options
;
1265 val_print (type
, embedded_offset
, 0, stream
, 0, val
, &opts
,
1270 /* value_contents_for_printing fetches all VAL's contents. They are
1271 needed to check whether VAL is optimized-out or unavailable
1273 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
1275 /* A scalar object that does not have all bits available can't be
1276 printed, because all bits contribute to its representation. */
1277 if (value_bits_any_optimized_out (val
,
1278 TARGET_CHAR_BIT
* embedded_offset
,
1279 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
1280 val_print_optimized_out (val
, stream
);
1281 else if (!value_bytes_available (val
, embedded_offset
, TYPE_LENGTH (type
)))
1282 val_print_unavailable (stream
);
1284 print_scalar_formatted (valaddr
+ embedded_offset
* unit_size
, type
,
1285 options
, size
, stream
);
1288 /* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g.
1289 The raison d'etre of this function is to consolidate printing of
1290 LONG_LONG's into this one function. The format chars b,h,w,g are
1291 from print_scalar_formatted(). Numbers are printed using C
1294 USE_C_FORMAT means to use C format in all cases. Without it,
1295 'o' and 'x' format do not include the standard C radix prefix
1298 Hilfinger/2004-09-09: USE_C_FORMAT was originally called USE_LOCAL
1299 and was intended to request formating according to the current
1300 language and would be used for most integers that GDB prints. The
1301 exceptional cases were things like protocols where the format of
1302 the integer is a protocol thing, not a user-visible thing). The
1303 parameter remains to preserve the information of what things might
1304 be printed with language-specific format, should we ever resurrect
1308 print_longest (struct ui_file
*stream
, int format
, int use_c_format
,
1316 val
= int_string (val_long
, 10, 1, 0, 1); break;
1318 val
= int_string (val_long
, 10, 0, 0, 1); break;
1320 val
= int_string (val_long
, 16, 0, 0, use_c_format
); break;
1322 val
= int_string (val_long
, 16, 0, 2, 1); break;
1324 val
= int_string (val_long
, 16, 0, 4, 1); break;
1326 val
= int_string (val_long
, 16, 0, 8, 1); break;
1328 val
= int_string (val_long
, 16, 0, 16, 1); break;
1331 val
= int_string (val_long
, 8, 0, 0, use_c_format
); break;
1333 internal_error (__FILE__
, __LINE__
,
1334 _("failed internal consistency check"));
1336 fputs_filtered (val
, stream
);
1339 /* This used to be a macro, but I don't think it is called often enough
1340 to merit such treatment. */
1341 /* Convert a LONGEST to an int. This is used in contexts (e.g. number of
1342 arguments to a function, number in a value history, register number, etc.)
1343 where the value must not be larger than can fit in an int. */
1346 longest_to_int (LONGEST arg
)
1348 /* Let the compiler do the work. */
1349 int rtnval
= (int) arg
;
1351 /* Check for overflows or underflows. */
1352 if (sizeof (LONGEST
) > sizeof (int))
1356 error (_("Value out of range."));
1362 /* Print a floating point value of floating-point type TYPE,
1363 pointed to in GDB by VALADDR, on STREAM. */
1366 print_floating (const gdb_byte
*valaddr
, struct type
*type
,
1367 struct ui_file
*stream
)
1370 if (TYPE_CODE (type
) == TYPE_CODE_FLT
)
1372 const struct floatformat
*fmt
= floatformat_from_type (type
);
1373 str
= floatformat_to_string (fmt
, valaddr
);
1377 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (type
));
1378 unsigned len
= TYPE_LENGTH (type
);
1379 str
= decimal_to_string (valaddr
, len
, byte_order
);
1381 fputs_filtered (str
.c_str (), stream
);
1385 print_binary_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1386 unsigned len
, enum bfd_endian byte_order
, bool zero_pad
)
1391 bool seen_a_one
= false;
1393 /* Declared "int" so it will be signed.
1394 This ensures that right shift will shift in zeros. */
1396 const int mask
= 0x080;
1398 if (byte_order
== BFD_ENDIAN_BIG
)
1404 /* Every byte has 8 binary characters; peel off
1405 and print from the MSB end. */
1407 for (i
= 0; i
< (HOST_CHAR_BIT
* sizeof (*p
)); i
++)
1409 if (*p
& (mask
>> i
))
1414 if (zero_pad
|| seen_a_one
|| b
== '1')
1415 fputc_filtered (b
, stream
);
1423 for (p
= valaddr
+ len
- 1;
1427 for (i
= 0; i
< (HOST_CHAR_BIT
* sizeof (*p
)); i
++)
1429 if (*p
& (mask
>> i
))
1434 if (zero_pad
|| seen_a_one
|| b
== '1')
1435 fputc_filtered (b
, stream
);
1442 /* When not zero-padding, ensure that something is printed when the
1444 if (!zero_pad
&& !seen_a_one
)
1445 fputc_filtered ('0', stream
);
1448 /* A helper for print_octal_chars that emits a single octal digit,
1449 optionally suppressing it if is zero and updating SEEN_A_ONE. */
1452 emit_octal_digit (struct ui_file
*stream
, bool *seen_a_one
, int digit
)
1454 if (*seen_a_one
|| digit
!= 0)
1455 fprintf_filtered (stream
, "%o", digit
);
1460 /* VALADDR points to an integer of LEN bytes.
1461 Print it in octal on stream or format it in buf. */
1464 print_octal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1465 unsigned len
, enum bfd_endian byte_order
)
1468 unsigned char octa1
, octa2
, octa3
, carry
;
1471 /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track
1472 * the extra bits, which cycle every three bytes:
1474 * Byte side: 0 1 2 3
1476 * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 |
1478 * Octal side: 0 1 carry 3 4 carry ...
1480 * Cycle number: 0 1 2
1482 * But of course we are printing from the high side, so we have to
1483 * figure out where in the cycle we are so that we end up with no
1484 * left over bits at the end.
1486 #define BITS_IN_OCTAL 3
1487 #define HIGH_ZERO 0340
1488 #define LOW_ZERO 0034
1489 #define CARRY_ZERO 0003
1490 static_assert (HIGH_ZERO
+ LOW_ZERO
+ CARRY_ZERO
== 0xff,
1491 "cycle zero constants are wrong");
1492 #define HIGH_ONE 0200
1493 #define MID_ONE 0160
1494 #define LOW_ONE 0016
1495 #define CARRY_ONE 0001
1496 static_assert (HIGH_ONE
+ MID_ONE
+ LOW_ONE
+ CARRY_ONE
== 0xff,
1497 "cycle one constants are wrong");
1498 #define HIGH_TWO 0300
1499 #define MID_TWO 0070
1500 #define LOW_TWO 0007
1501 static_assert (HIGH_TWO
+ MID_TWO
+ LOW_TWO
== 0xff,
1502 "cycle two constants are wrong");
1504 /* For 32 we start in cycle 2, with two bits and one bit carry;
1505 for 64 in cycle in cycle 1, with one bit and a two bit carry. */
1507 cycle
= (len
* HOST_CHAR_BIT
) % BITS_IN_OCTAL
;
1510 fputs_filtered ("0", stream
);
1511 bool seen_a_one
= false;
1512 if (byte_order
== BFD_ENDIAN_BIG
)
1521 /* No carry in, carry out two bits. */
1523 octa1
= (HIGH_ZERO
& *p
) >> 5;
1524 octa2
= (LOW_ZERO
& *p
) >> 2;
1525 carry
= (CARRY_ZERO
& *p
);
1526 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1527 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1531 /* Carry in two bits, carry out one bit. */
1533 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1534 octa2
= (MID_ONE
& *p
) >> 4;
1535 octa3
= (LOW_ONE
& *p
) >> 1;
1536 carry
= (CARRY_ONE
& *p
);
1537 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1538 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1539 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1543 /* Carry in one bit, no carry out. */
1545 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1546 octa2
= (MID_TWO
& *p
) >> 3;
1547 octa3
= (LOW_TWO
& *p
);
1549 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1550 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1551 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1555 error (_("Internal error in octal conversion;"));
1559 cycle
= cycle
% BITS_IN_OCTAL
;
1564 for (p
= valaddr
+ len
- 1;
1571 /* Carry out, no carry in */
1573 octa1
= (HIGH_ZERO
& *p
) >> 5;
1574 octa2
= (LOW_ZERO
& *p
) >> 2;
1575 carry
= (CARRY_ZERO
& *p
);
1576 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1577 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1581 /* Carry in, carry out */
1583 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1584 octa2
= (MID_ONE
& *p
) >> 4;
1585 octa3
= (LOW_ONE
& *p
) >> 1;
1586 carry
= (CARRY_ONE
& *p
);
1587 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1588 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1589 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1593 /* Carry in, no carry out */
1595 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1596 octa2
= (MID_TWO
& *p
) >> 3;
1597 octa3
= (LOW_TWO
& *p
);
1599 emit_octal_digit (stream
, &seen_a_one
, octa1
);
1600 emit_octal_digit (stream
, &seen_a_one
, octa2
);
1601 emit_octal_digit (stream
, &seen_a_one
, octa3
);
1605 error (_("Internal error in octal conversion;"));
1609 cycle
= cycle
% BITS_IN_OCTAL
;
1615 /* Possibly negate the integer represented by BYTES. It contains LEN
1616 bytes in the specified byte order. If the integer is negative,
1617 copy it into OUT_VEC, negate it, and return true. Otherwise, do
1618 nothing and return false. */
1621 maybe_negate_by_bytes (const gdb_byte
*bytes
, unsigned len
,
1622 enum bfd_endian byte_order
,
1623 gdb::byte_vector
*out_vec
)
1626 if (byte_order
== BFD_ENDIAN_BIG
)
1627 sign_byte
= bytes
[0];
1629 sign_byte
= bytes
[len
- 1];
1630 if ((sign_byte
& 0x80) == 0)
1633 out_vec
->resize (len
);
1635 /* Compute -x == 1 + ~x. */
1636 if (byte_order
== BFD_ENDIAN_LITTLE
)
1639 for (unsigned i
= 0; i
< len
; ++i
)
1641 unsigned tem
= (0xff & ~bytes
[i
]) + carry
;
1642 (*out_vec
)[i
] = tem
& 0xff;
1649 for (unsigned i
= len
; i
> 0; --i
)
1651 unsigned tem
= (0xff & ~bytes
[i
- 1]) + carry
;
1652 (*out_vec
)[i
- 1] = tem
& 0xff;
1660 /* VALADDR points to an integer of LEN bytes.
1661 Print it in decimal on stream or format it in buf. */
1664 print_decimal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1665 unsigned len
, bool is_signed
,
1666 enum bfd_endian byte_order
)
1669 #define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */
1670 #define CARRY_LEFT( x ) ((x) % TEN)
1671 #define SHIFT( x ) ((x) << 4)
1672 #define LOW_NIBBLE( x ) ( (x) & 0x00F)
1673 #define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4)
1678 int i
, j
, decimal_digits
;
1682 gdb::byte_vector negated_bytes
;
1684 && maybe_negate_by_bytes (valaddr
, len
, byte_order
, &negated_bytes
))
1686 fputs_filtered ("-", stream
);
1687 valaddr
= negated_bytes
.data ();
1690 /* Base-ten number is less than twice as many digits
1691 as the base 16 number, which is 2 digits per byte. */
1693 decimal_len
= len
* 2 * 2;
1694 std::vector
<unsigned char> digits (decimal_len
, 0);
1696 /* Ok, we have an unknown number of bytes of data to be printed in
1699 * Given a hex number (in nibbles) as XYZ, we start by taking X and
1700 * decemalizing it as "x1 x2" in two decimal nibbles. Then we multiply
1701 * the nibbles by 16, add Y and re-decimalize. Repeat with Z.
1703 * The trick is that "digits" holds a base-10 number, but sometimes
1704 * the individual digits are > 10.
1706 * Outer loop is per nibble (hex digit) of input, from MSD end to
1709 decimal_digits
= 0; /* Number of decimal digits so far */
1710 p
= (byte_order
== BFD_ENDIAN_BIG
) ? valaddr
: valaddr
+ len
- 1;
1712 while ((byte_order
== BFD_ENDIAN_BIG
) ? (p
< valaddr
+ len
) : (p
>= valaddr
))
1715 * Multiply current base-ten number by 16 in place.
1716 * Each digit was between 0 and 9, now is between
1719 for (j
= 0; j
< decimal_digits
; j
++)
1721 digits
[j
] = SHIFT (digits
[j
]);
1724 /* Take the next nibble off the input and add it to what
1725 * we've got in the LSB position. Bottom 'digit' is now
1726 * between 0 and 159.
1728 * "flip" is used to run this loop twice for each byte.
1732 /* Take top nibble. */
1734 digits
[0] += HIGH_NIBBLE (*p
);
1739 /* Take low nibble and bump our pointer "p". */
1741 digits
[0] += LOW_NIBBLE (*p
);
1742 if (byte_order
== BFD_ENDIAN_BIG
)
1749 /* Re-decimalize. We have to do this often enough
1750 * that we don't overflow, but once per nibble is
1751 * overkill. Easier this way, though. Note that the
1752 * carry is often larger than 10 (e.g. max initial
1753 * carry out of lowest nibble is 15, could bubble all
1754 * the way up greater than 10). So we have to do
1755 * the carrying beyond the last current digit.
1758 for (j
= 0; j
< decimal_len
- 1; j
++)
1762 /* "/" won't handle an unsigned char with
1763 * a value that if signed would be negative.
1764 * So extend to longword int via "dummy".
1767 carry
= CARRY_OUT (dummy
);
1768 digits
[j
] = CARRY_LEFT (dummy
);
1770 if (j
>= decimal_digits
&& carry
== 0)
1773 * All higher digits are 0 and we
1774 * no longer have a carry.
1776 * Note: "j" is 0-based, "decimal_digits" is
1779 decimal_digits
= j
+ 1;
1785 /* Ok, now "digits" is the decimal representation, with
1786 the "decimal_digits" actual digits. Print! */
1788 for (i
= decimal_digits
- 1; i
> 0 && digits
[i
] == 0; --i
)
1793 fprintf_filtered (stream
, "%1d", digits
[i
]);
1797 /* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */
1800 print_hex_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1801 unsigned len
, enum bfd_endian byte_order
,
1806 fputs_filtered ("0x", stream
);
1807 if (byte_order
== BFD_ENDIAN_BIG
)
1813 /* Strip leading 0 bytes, but be sure to leave at least a
1814 single byte at the end. */
1815 for (; p
< valaddr
+ len
- 1 && !*p
; ++p
)
1819 const gdb_byte
*first
= p
;
1824 /* When not zero-padding, use a different format for the
1825 very first byte printed. */
1826 if (!zero_pad
&& p
== first
)
1827 fprintf_filtered (stream
, "%x", *p
);
1829 fprintf_filtered (stream
, "%02x", *p
);
1834 p
= valaddr
+ len
- 1;
1838 /* Strip leading 0 bytes, but be sure to leave at least a
1839 single byte at the end. */
1840 for (; p
>= valaddr
+ 1 && !*p
; --p
)
1844 const gdb_byte
*first
= p
;
1849 /* When not zero-padding, use a different format for the
1850 very first byte printed. */
1851 if (!zero_pad
&& p
== first
)
1852 fprintf_filtered (stream
, "%x", *p
);
1854 fprintf_filtered (stream
, "%02x", *p
);
1859 /* VALADDR points to a char integer of LEN bytes.
1860 Print it out in appropriate language form on stream.
1861 Omit any leading zero chars. */
1864 print_char_chars (struct ui_file
*stream
, struct type
*type
,
1865 const gdb_byte
*valaddr
,
1866 unsigned len
, enum bfd_endian byte_order
)
1870 if (byte_order
== BFD_ENDIAN_BIG
)
1873 while (p
< valaddr
+ len
- 1 && *p
== 0)
1876 while (p
< valaddr
+ len
)
1878 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
1884 p
= valaddr
+ len
- 1;
1885 while (p
> valaddr
&& *p
== 0)
1888 while (p
>= valaddr
)
1890 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
1896 /* Print function pointer with inferior address ADDRESS onto stdio
1900 print_function_pointer_address (const struct value_print_options
*options
,
1901 struct gdbarch
*gdbarch
,
1903 struct ui_file
*stream
)
1906 = gdbarch_convert_from_func_ptr_addr (gdbarch
, address
,
1909 /* If the function pointer is represented by a description, print
1910 the address of the description. */
1911 if (options
->addressprint
&& func_addr
!= address
)
1913 fputs_filtered ("@", stream
);
1914 fputs_filtered (paddress (gdbarch
, address
), stream
);
1915 fputs_filtered (": ", stream
);
1917 print_address_demangle (options
, gdbarch
, func_addr
, stream
, demangle
);
1921 /* Print on STREAM using the given OPTIONS the index for the element
1922 at INDEX of an array whose index type is INDEX_TYPE. */
1925 maybe_print_array_index (struct type
*index_type
, LONGEST index
,
1926 struct ui_file
*stream
,
1927 const struct value_print_options
*options
)
1929 struct value
*index_value
;
1931 if (!options
->print_array_indexes
)
1934 index_value
= value_from_longest (index_type
, index
);
1936 LA_PRINT_ARRAY_INDEX (index_value
, stream
, options
);
1939 /* Called by various <lang>_val_print routines to print elements of an
1940 array in the form "<elem1>, <elem2>, <elem3>, ...".
1942 (FIXME?) Assumes array element separator is a comma, which is correct
1943 for all languages currently handled.
1944 (FIXME?) Some languages have a notation for repeated array elements,
1945 perhaps we should try to use that notation when appropriate. */
1948 val_print_array_elements (struct type
*type
,
1949 LONGEST embedded_offset
,
1950 CORE_ADDR address
, struct ui_file
*stream
,
1953 const struct value_print_options
*options
,
1956 unsigned int things_printed
= 0;
1958 struct type
*elttype
, *index_type
, *base_index_type
;
1960 /* Position of the array element we are examining to see
1961 whether it is repeated. */
1963 /* Number of repetitions we have detected so far. */
1965 LONGEST low_bound
, high_bound
;
1966 LONGEST low_pos
, high_pos
;
1968 elttype
= TYPE_TARGET_TYPE (type
);
1969 eltlen
= type_length_units (check_typedef (elttype
));
1970 index_type
= TYPE_INDEX_TYPE (type
);
1972 if (get_array_bounds (type
, &low_bound
, &high_bound
))
1974 if (TYPE_CODE (index_type
) == TYPE_CODE_RANGE
)
1975 base_index_type
= TYPE_TARGET_TYPE (index_type
);
1977 base_index_type
= index_type
;
1979 /* Non-contiguous enumerations types can by used as index types
1980 in some languages (e.g. Ada). In this case, the array length
1981 shall be computed from the positions of the first and last
1982 literal in the enumeration type, and not from the values
1983 of these literals. */
1984 if (!discrete_position (base_index_type
, low_bound
, &low_pos
)
1985 || !discrete_position (base_index_type
, high_bound
, &high_pos
))
1987 warning (_("unable to get positions in array, use bounds instead"));
1988 low_pos
= low_bound
;
1989 high_pos
= high_bound
;
1992 /* The array length should normally be HIGH_POS - LOW_POS + 1.
1993 But we have to be a little extra careful, because some languages
1994 such as Ada allow LOW_POS to be greater than HIGH_POS for
1995 empty arrays. In that situation, the array length is just zero,
1997 if (low_pos
> high_pos
)
2000 len
= high_pos
- low_pos
+ 1;
2004 warning (_("unable to get bounds of array, assuming null array"));
2009 annotate_array_section_begin (i
, elttype
);
2011 for (; i
< len
&& things_printed
< options
->print_max
; i
++)
2015 if (options
->prettyformat_arrays
)
2017 fprintf_filtered (stream
, ",\n");
2018 print_spaces_filtered (2 + 2 * recurse
, stream
);
2022 fprintf_filtered (stream
, ", ");
2025 wrap_here (n_spaces (2 + 2 * recurse
));
2026 maybe_print_array_index (index_type
, i
+ low_bound
,
2031 /* Only check for reps if repeat_count_threshold is not set to
2032 UINT_MAX (unlimited). */
2033 if (options
->repeat_count_threshold
< UINT_MAX
)
2036 && value_contents_eq (val
,
2037 embedded_offset
+ i
* eltlen
,
2048 if (reps
> options
->repeat_count_threshold
)
2050 val_print (elttype
, embedded_offset
+ i
* eltlen
,
2051 address
, stream
, recurse
+ 1, val
, options
,
2053 annotate_elt_rep (reps
);
2054 fprintf_filtered (stream
, " <repeats %u times>", reps
);
2055 annotate_elt_rep_end ();
2058 things_printed
+= options
->repeat_count_threshold
;
2062 val_print (elttype
, embedded_offset
+ i
* eltlen
,
2064 stream
, recurse
+ 1, val
, options
, current_language
);
2069 annotate_array_section_end ();
2072 fprintf_filtered (stream
, "...");
2076 /* Read LEN bytes of target memory at address MEMADDR, placing the
2077 results in GDB's memory at MYADDR. Returns a count of the bytes
2078 actually read, and optionally a target_xfer_status value in the
2079 location pointed to by ERRPTR if ERRPTR is non-null. */
2081 /* FIXME: cagney/1999-10-14: Only used by val_print_string. Can this
2082 function be eliminated. */
2085 partial_memory_read (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
2086 int len
, int *errptr
)
2088 int nread
; /* Number of bytes actually read. */
2089 int errcode
; /* Error from last read. */
2091 /* First try a complete read. */
2092 errcode
= target_read_memory (memaddr
, myaddr
, len
);
2100 /* Loop, reading one byte at a time until we get as much as we can. */
2101 for (errcode
= 0, nread
= 0; len
> 0 && errcode
== 0; nread
++, len
--)
2103 errcode
= target_read_memory (memaddr
++, myaddr
++, 1);
2105 /* If an error, the last read was unsuccessful, so adjust count. */
2118 /* Read a string from the inferior, at ADDR, with LEN characters of WIDTH bytes
2119 each. Fetch at most FETCHLIMIT characters. BUFFER will be set to a newly
2120 allocated buffer containing the string, which the caller is responsible to
2121 free, and BYTES_READ will be set to the number of bytes read. Returns 0 on
2122 success, or a target_xfer_status on failure.
2124 If LEN > 0, reads the lesser of LEN or FETCHLIMIT characters
2125 (including eventual NULs in the middle or end of the string).
2127 If LEN is -1, stops at the first null character (not necessarily
2128 the first null byte) up to a maximum of FETCHLIMIT characters. Set
2129 FETCHLIMIT to UINT_MAX to read as many characters as possible from
2132 Unless an exception is thrown, BUFFER will always be allocated, even on
2133 failure. In this case, some characters might have been read before the
2134 failure happened. Check BYTES_READ to recognize this situation.
2136 Note: There was a FIXME asking to make this code use target_read_string,
2137 but this function is more general (can read past null characters, up to
2138 given LEN). Besides, it is used much more often than target_read_string
2139 so it is more tested. Perhaps callers of target_read_string should use
2140 this function instead? */
2143 read_string (CORE_ADDR addr
, int len
, int width
, unsigned int fetchlimit
,
2144 enum bfd_endian byte_order
, gdb_byte
**buffer
, int *bytes_read
)
2146 int errcode
; /* Errno returned from bad reads. */
2147 unsigned int nfetch
; /* Chars to fetch / chars fetched. */
2148 gdb_byte
*bufptr
; /* Pointer to next available byte in
2150 struct cleanup
*old_chain
= NULL
; /* Top of the old cleanup chain. */
2152 /* Loop until we either have all the characters, or we encounter
2153 some error, such as bumping into the end of the address space. */
2157 old_chain
= make_cleanup (free_current_contents
, buffer
);
2161 /* We want fetchlimit chars, so we might as well read them all in
2163 unsigned int fetchlen
= std::min ((unsigned) len
, fetchlimit
);
2165 *buffer
= (gdb_byte
*) xmalloc (fetchlen
* width
);
2168 nfetch
= partial_memory_read (addr
, bufptr
, fetchlen
* width
, &errcode
)
2170 addr
+= nfetch
* width
;
2171 bufptr
+= nfetch
* width
;
2175 unsigned long bufsize
= 0;
2176 unsigned int chunksize
; /* Size of each fetch, in chars. */
2177 int found_nul
; /* Non-zero if we found the nul char. */
2178 gdb_byte
*limit
; /* First location past end of fetch buffer. */
2181 /* We are looking for a NUL terminator to end the fetching, so we
2182 might as well read in blocks that are large enough to be efficient,
2183 but not so large as to be slow if fetchlimit happens to be large.
2184 So we choose the minimum of 8 and fetchlimit. We used to use 200
2185 instead of 8 but 200 is way too big for remote debugging over a
2187 chunksize
= std::min (8u, fetchlimit
);
2192 nfetch
= std::min ((unsigned long) chunksize
, fetchlimit
- bufsize
);
2194 if (*buffer
== NULL
)
2195 *buffer
= (gdb_byte
*) xmalloc (nfetch
* width
);
2197 *buffer
= (gdb_byte
*) xrealloc (*buffer
,
2198 (nfetch
+ bufsize
) * width
);
2200 bufptr
= *buffer
+ bufsize
* width
;
2203 /* Read as much as we can. */
2204 nfetch
= partial_memory_read (addr
, bufptr
, nfetch
* width
, &errcode
)
2207 /* Scan this chunk for the null character that terminates the string
2208 to print. If found, we don't need to fetch any more. Note
2209 that bufptr is explicitly left pointing at the next character
2210 after the null character, or at the next character after the end
2213 limit
= bufptr
+ nfetch
* width
;
2214 while (bufptr
< limit
)
2218 c
= extract_unsigned_integer (bufptr
, width
, byte_order
);
2223 /* We don't care about any error which happened after
2224 the NUL terminator. */
2231 while (errcode
== 0 /* no error */
2232 && bufptr
- *buffer
< fetchlimit
* width
/* no overrun */
2233 && !found_nul
); /* haven't found NUL yet */
2236 { /* Length of string is really 0! */
2237 /* We always allocate *buffer. */
2238 *buffer
= bufptr
= (gdb_byte
*) xmalloc (1);
2242 /* bufptr and addr now point immediately beyond the last byte which we
2243 consider part of the string (including a '\0' which ends the string). */
2244 *bytes_read
= bufptr
- *buffer
;
2248 discard_cleanups (old_chain
);
2253 /* Return true if print_wchar can display W without resorting to a
2254 numeric escape, false otherwise. */
2257 wchar_printable (gdb_wchar_t w
)
2259 return (gdb_iswprint (w
)
2260 || w
== LCST ('\a') || w
== LCST ('\b')
2261 || w
== LCST ('\f') || w
== LCST ('\n')
2262 || w
== LCST ('\r') || w
== LCST ('\t')
2263 || w
== LCST ('\v'));
2266 /* A helper function that converts the contents of STRING to wide
2267 characters and then appends them to OUTPUT. */
2270 append_string_as_wide (const char *string
,
2271 struct obstack
*output
)
2273 for (; *string
; ++string
)
2275 gdb_wchar_t w
= gdb_btowc (*string
);
2276 obstack_grow (output
, &w
, sizeof (gdb_wchar_t
));
2280 /* Print a wide character W to OUTPUT. ORIG is a pointer to the
2281 original (target) bytes representing the character, ORIG_LEN is the
2282 number of valid bytes. WIDTH is the number of bytes in a base
2283 characters of the type. OUTPUT is an obstack to which wide
2284 characters are emitted. QUOTER is a (narrow) character indicating
2285 the style of quotes surrounding the character to be printed.
2286 NEED_ESCAPE is an in/out flag which is used to track numeric
2287 escapes across calls. */
2290 print_wchar (gdb_wint_t w
, const gdb_byte
*orig
,
2291 int orig_len
, int width
,
2292 enum bfd_endian byte_order
,
2293 struct obstack
*output
,
2294 int quoter
, int *need_escapep
)
2296 int need_escape
= *need_escapep
;
2300 /* iswprint implementation on Windows returns 1 for tab character.
2301 In order to avoid different printout on this host, we explicitly
2302 use wchar_printable function. */
2306 obstack_grow_wstr (output
, LCST ("\\a"));
2309 obstack_grow_wstr (output
, LCST ("\\b"));
2312 obstack_grow_wstr (output
, LCST ("\\f"));
2315 obstack_grow_wstr (output
, LCST ("\\n"));
2318 obstack_grow_wstr (output
, LCST ("\\r"));
2321 obstack_grow_wstr (output
, LCST ("\\t"));
2324 obstack_grow_wstr (output
, LCST ("\\v"));
2328 if (wchar_printable (w
) && (!need_escape
|| (!gdb_iswdigit (w
)
2330 && w
!= LCST ('9'))))
2332 gdb_wchar_t wchar
= w
;
2334 if (w
== gdb_btowc (quoter
) || w
== LCST ('\\'))
2335 obstack_grow_wstr (output
, LCST ("\\"));
2336 obstack_grow (output
, &wchar
, sizeof (gdb_wchar_t
));
2342 for (i
= 0; i
+ width
<= orig_len
; i
+= width
)
2347 value
= extract_unsigned_integer (&orig
[i
], width
,
2349 /* If the value fits in 3 octal digits, print it that
2350 way. Otherwise, print it as a hex escape. */
2352 xsnprintf (octal
, sizeof (octal
), "\\%.3o",
2353 (int) (value
& 0777));
2355 xsnprintf (octal
, sizeof (octal
), "\\x%lx", (long) value
);
2356 append_string_as_wide (octal
, output
);
2358 /* If we somehow have extra bytes, print them now. */
2359 while (i
< orig_len
)
2363 xsnprintf (octal
, sizeof (octal
), "\\%.3o", orig
[i
] & 0xff);
2364 append_string_as_wide (octal
, output
);
2375 /* Print the character C on STREAM as part of the contents of a
2376 literal string whose delimiter is QUOTER. ENCODING names the
2380 generic_emit_char (int c
, struct type
*type
, struct ui_file
*stream
,
2381 int quoter
, const char *encoding
)
2383 enum bfd_endian byte_order
2384 = gdbarch_byte_order (get_type_arch (type
));
2386 int need_escape
= 0;
2388 buf
= (gdb_byte
*) alloca (TYPE_LENGTH (type
));
2389 pack_long (buf
, type
, c
);
2391 wchar_iterator
iter (buf
, TYPE_LENGTH (type
), encoding
, TYPE_LENGTH (type
));
2393 /* This holds the printable form of the wchar_t data. */
2394 auto_obstack wchar_buf
;
2400 const gdb_byte
*buf
;
2402 int print_escape
= 1;
2403 enum wchar_iterate_result result
;
2405 num_chars
= iter
.iterate (&result
, &chars
, &buf
, &buflen
);
2410 /* If all characters are printable, print them. Otherwise,
2411 we're going to have to print an escape sequence. We
2412 check all characters because we want to print the target
2413 bytes in the escape sequence, and we don't know character
2414 boundaries there. */
2418 for (i
= 0; i
< num_chars
; ++i
)
2419 if (!wchar_printable (chars
[i
]))
2427 for (i
= 0; i
< num_chars
; ++i
)
2428 print_wchar (chars
[i
], buf
, buflen
,
2429 TYPE_LENGTH (type
), byte_order
,
2430 &wchar_buf
, quoter
, &need_escape
);
2434 /* This handles the NUM_CHARS == 0 case as well. */
2436 print_wchar (gdb_WEOF
, buf
, buflen
, TYPE_LENGTH (type
),
2437 byte_order
, &wchar_buf
, quoter
, &need_escape
);
2440 /* The output in the host encoding. */
2441 auto_obstack output
;
2443 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2444 (gdb_byte
*) obstack_base (&wchar_buf
),
2445 obstack_object_size (&wchar_buf
),
2446 sizeof (gdb_wchar_t
), &output
, translit_char
);
2447 obstack_1grow (&output
, '\0');
2449 fputs_filtered ((const char *) obstack_base (&output
), stream
);
2452 /* Return the repeat count of the next character/byte in ITER,
2453 storing the result in VEC. */
2456 count_next_character (wchar_iterator
*iter
,
2457 VEC (converted_character_d
) **vec
)
2459 struct converted_character
*current
;
2461 if (VEC_empty (converted_character_d
, *vec
))
2463 struct converted_character tmp
;
2467 = iter
->iterate (&tmp
.result
, &chars
, &tmp
.buf
, &tmp
.buflen
);
2468 if (tmp
.num_chars
> 0)
2470 gdb_assert (tmp
.num_chars
< MAX_WCHARS
);
2471 memcpy (tmp
.chars
, chars
, tmp
.num_chars
* sizeof (gdb_wchar_t
));
2473 VEC_safe_push (converted_character_d
, *vec
, &tmp
);
2476 current
= VEC_last (converted_character_d
, *vec
);
2478 /* Count repeated characters or bytes. */
2479 current
->repeat_count
= 1;
2480 if (current
->num_chars
== -1)
2488 struct converted_character d
;
2495 /* Get the next character. */
2496 d
.num_chars
= iter
->iterate (&d
.result
, &chars
, &d
.buf
, &d
.buflen
);
2498 /* If a character was successfully converted, save the character
2499 into the converted character. */
2500 if (d
.num_chars
> 0)
2502 gdb_assert (d
.num_chars
< MAX_WCHARS
);
2503 memcpy (d
.chars
, chars
, WCHAR_BUFLEN (d
.num_chars
));
2506 /* Determine if the current character is the same as this
2508 if (d
.num_chars
== current
->num_chars
&& d
.result
== current
->result
)
2510 /* There are two cases to consider:
2512 1) Equality of converted character (num_chars > 0)
2513 2) Equality of non-converted character (num_chars == 0) */
2514 if ((current
->num_chars
> 0
2515 && memcmp (current
->chars
, d
.chars
,
2516 WCHAR_BUFLEN (current
->num_chars
)) == 0)
2517 || (current
->num_chars
== 0
2518 && current
->buflen
== d
.buflen
2519 && memcmp (current
->buf
, d
.buf
, current
->buflen
) == 0))
2520 ++current
->repeat_count
;
2528 /* Push this next converted character onto the result vector. */
2529 repeat
= current
->repeat_count
;
2530 VEC_safe_push (converted_character_d
, *vec
, &d
);
2535 /* Print the characters in CHARS to the OBSTACK. QUOTE_CHAR is the quote
2536 character to use with string output. WIDTH is the size of the output
2537 character type. BYTE_ORDER is the the target byte order. OPTIONS
2538 is the user's print options. */
2541 print_converted_chars_to_obstack (struct obstack
*obstack
,
2542 VEC (converted_character_d
) *chars
,
2543 int quote_char
, int width
,
2544 enum bfd_endian byte_order
,
2545 const struct value_print_options
*options
)
2548 struct converted_character
*elem
;
2549 enum {START
, SINGLE
, REPEAT
, INCOMPLETE
, FINISH
} state
, last
;
2550 gdb_wchar_t wide_quote_char
= gdb_btowc (quote_char
);
2551 int need_escape
= 0;
2553 /* Set the start state. */
2555 last
= state
= START
;
2563 /* Nothing to do. */
2570 /* We are outputting a single character
2571 (< options->repeat_count_threshold). */
2575 /* We were outputting some other type of content, so we
2576 must output and a comma and a quote. */
2578 obstack_grow_wstr (obstack
, LCST (", "));
2579 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2581 /* Output the character. */
2582 for (j
= 0; j
< elem
->repeat_count
; ++j
)
2584 if (elem
->result
== wchar_iterate_ok
)
2585 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2586 byte_order
, obstack
, quote_char
, &need_escape
);
2588 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2589 byte_order
, obstack
, quote_char
, &need_escape
);
2599 /* We are outputting a character with a repeat count
2600 greater than options->repeat_count_threshold. */
2604 /* We were outputting a single string. Terminate the
2606 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2609 obstack_grow_wstr (obstack
, LCST (", "));
2611 /* Output the character and repeat string. */
2612 obstack_grow_wstr (obstack
, LCST ("'"));
2613 if (elem
->result
== wchar_iterate_ok
)
2614 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2615 byte_order
, obstack
, quote_char
, &need_escape
);
2617 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2618 byte_order
, obstack
, quote_char
, &need_escape
);
2619 obstack_grow_wstr (obstack
, LCST ("'"));
2620 s
= xstrprintf (_(" <repeats %u times>"), elem
->repeat_count
);
2621 for (j
= 0; s
[j
]; ++j
)
2623 gdb_wchar_t w
= gdb_btowc (s
[j
]);
2624 obstack_grow (obstack
, &w
, sizeof (gdb_wchar_t
));
2631 /* We are outputting an incomplete sequence. */
2634 /* If we were outputting a string of SINGLE characters,
2635 terminate the quote. */
2636 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2639 obstack_grow_wstr (obstack
, LCST (", "));
2641 /* Output the incomplete sequence string. */
2642 obstack_grow_wstr (obstack
, LCST ("<incomplete sequence "));
2643 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
, byte_order
,
2644 obstack
, 0, &need_escape
);
2645 obstack_grow_wstr (obstack
, LCST (">"));
2647 /* We do not attempt to outupt anything after this. */
2652 /* All done. If we were outputting a string of SINGLE
2653 characters, the string must be terminated. Otherwise,
2654 REPEAT and INCOMPLETE are always left properly terminated. */
2656 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2661 /* Get the next element and state. */
2663 if (state
!= FINISH
)
2665 elem
= VEC_index (converted_character_d
, chars
, idx
++);
2666 switch (elem
->result
)
2668 case wchar_iterate_ok
:
2669 case wchar_iterate_invalid
:
2670 if (elem
->repeat_count
> options
->repeat_count_threshold
)
2676 case wchar_iterate_incomplete
:
2680 case wchar_iterate_eof
:
2688 /* Print the character string STRING, printing at most LENGTH
2689 characters. LENGTH is -1 if the string is nul terminated. TYPE is
2690 the type of each character. OPTIONS holds the printing options;
2691 printing stops early if the number hits print_max; repeat counts
2692 are printed as appropriate. Print ellipses at the end if we had to
2693 stop before printing LENGTH characters, or if FORCE_ELLIPSES.
2694 QUOTE_CHAR is the character to print at each end of the string. If
2695 C_STYLE_TERMINATOR is true, and the last character is 0, then it is
2699 generic_printstr (struct ui_file
*stream
, struct type
*type
,
2700 const gdb_byte
*string
, unsigned int length
,
2701 const char *encoding
, int force_ellipses
,
2702 int quote_char
, int c_style_terminator
,
2703 const struct value_print_options
*options
)
2705 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (type
));
2707 int width
= TYPE_LENGTH (type
);
2708 struct cleanup
*cleanup
;
2710 struct converted_character
*last
;
2711 VEC (converted_character_d
) *converted_chars
;
2715 unsigned long current_char
= 1;
2717 for (i
= 0; current_char
; ++i
)
2720 current_char
= extract_unsigned_integer (string
+ i
* width
,
2726 /* If the string was not truncated due to `set print elements', and
2727 the last byte of it is a null, we don't print that, in
2728 traditional C style. */
2729 if (c_style_terminator
2732 && (extract_unsigned_integer (string
+ (length
- 1) * width
,
2733 width
, byte_order
) == 0))
2738 fputs_filtered ("\"\"", stream
);
2742 /* Arrange to iterate over the characters, in wchar_t form. */
2743 wchar_iterator
iter (string
, length
* width
, encoding
, width
);
2744 converted_chars
= NULL
;
2745 cleanup
= make_cleanup (VEC_cleanup (converted_character_d
),
2748 /* Convert characters until the string is over or the maximum
2749 number of printed characters has been reached. */
2751 while (i
< options
->print_max
)
2757 /* Grab the next character and repeat count. */
2758 r
= count_next_character (&iter
, &converted_chars
);
2760 /* If less than zero, the end of the input string was reached. */
2764 /* Otherwise, add the count to the total print count and get
2765 the next character. */
2769 /* Get the last element and determine if the entire string was
2771 last
= VEC_last (converted_character_d
, converted_chars
);
2772 finished
= (last
->result
== wchar_iterate_eof
);
2774 /* Ensure that CONVERTED_CHARS is terminated. */
2775 last
->result
= wchar_iterate_eof
;
2777 /* WCHAR_BUF is the obstack we use to represent the string in
2779 auto_obstack wchar_buf
;
2781 /* Print the output string to the obstack. */
2782 print_converted_chars_to_obstack (&wchar_buf
, converted_chars
, quote_char
,
2783 width
, byte_order
, options
);
2785 if (force_ellipses
|| !finished
)
2786 obstack_grow_wstr (&wchar_buf
, LCST ("..."));
2788 /* OUTPUT is where we collect `char's for printing. */
2789 auto_obstack output
;
2791 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2792 (gdb_byte
*) obstack_base (&wchar_buf
),
2793 obstack_object_size (&wchar_buf
),
2794 sizeof (gdb_wchar_t
), &output
, translit_char
);
2795 obstack_1grow (&output
, '\0');
2797 fputs_filtered ((const char *) obstack_base (&output
), stream
);
2799 do_cleanups (cleanup
);
2802 /* Print a string from the inferior, starting at ADDR and printing up to LEN
2803 characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing
2804 stops at the first null byte, otherwise printing proceeds (including null
2805 bytes) until either print_max or LEN characters have been printed,
2806 whichever is smaller. ENCODING is the name of the string's
2807 encoding. It can be NULL, in which case the target encoding is
2811 val_print_string (struct type
*elttype
, const char *encoding
,
2812 CORE_ADDR addr
, int len
,
2813 struct ui_file
*stream
,
2814 const struct value_print_options
*options
)
2816 int force_ellipsis
= 0; /* Force ellipsis to be printed if nonzero. */
2817 int err
; /* Non-zero if we got a bad read. */
2818 int found_nul
; /* Non-zero if we found the nul char. */
2819 unsigned int fetchlimit
; /* Maximum number of chars to print. */
2821 gdb_byte
*buffer
= NULL
; /* Dynamically growable fetch buffer. */
2822 struct cleanup
*old_chain
= NULL
; /* Top of the old cleanup chain. */
2823 struct gdbarch
*gdbarch
= get_type_arch (elttype
);
2824 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
2825 int width
= TYPE_LENGTH (elttype
);
2827 /* First we need to figure out the limit on the number of characters we are
2828 going to attempt to fetch and print. This is actually pretty simple. If
2829 LEN >= zero, then the limit is the minimum of LEN and print_max. If
2830 LEN is -1, then the limit is print_max. This is true regardless of
2831 whether print_max is zero, UINT_MAX (unlimited), or something in between,
2832 because finding the null byte (or available memory) is what actually
2833 limits the fetch. */
2835 fetchlimit
= (len
== -1 ? options
->print_max
: std::min ((unsigned) len
,
2836 options
->print_max
));
2838 err
= read_string (addr
, len
, width
, fetchlimit
, byte_order
,
2839 &buffer
, &bytes_read
);
2840 old_chain
= make_cleanup (xfree
, buffer
);
2844 /* We now have either successfully filled the buffer to fetchlimit,
2845 or terminated early due to an error or finding a null char when
2848 /* Determine found_nul by looking at the last character read. */
2850 if (bytes_read
>= width
)
2851 found_nul
= extract_unsigned_integer (buffer
+ bytes_read
- width
, width
,
2853 if (len
== -1 && !found_nul
)
2857 /* We didn't find a NUL terminator we were looking for. Attempt
2858 to peek at the next character. If not successful, or it is not
2859 a null byte, then force ellipsis to be printed. */
2861 peekbuf
= (gdb_byte
*) alloca (width
);
2863 if (target_read_memory (addr
, peekbuf
, width
) == 0
2864 && extract_unsigned_integer (peekbuf
, width
, byte_order
) != 0)
2867 else if ((len
>= 0 && err
!= 0) || (len
> bytes_read
/ width
))
2869 /* Getting an error when we have a requested length, or fetching less
2870 than the number of characters actually requested, always make us
2875 /* If we get an error before fetching anything, don't print a string.
2876 But if we fetch something and then get an error, print the string
2877 and then the error message. */
2878 if (err
== 0 || bytes_read
> 0)
2880 LA_PRINT_STRING (stream
, elttype
, buffer
, bytes_read
/ width
,
2881 encoding
, force_ellipsis
, options
);
2886 std::string str
= memory_error_message (TARGET_XFER_E_IO
, gdbarch
, addr
);
2888 fprintf_filtered (stream
, "<error: ");
2889 fputs_filtered (str
.c_str (), stream
);
2890 fprintf_filtered (stream
, ">");
2894 do_cleanups (old_chain
);
2896 return (bytes_read
/ width
);
2900 /* The 'set input-radix' command writes to this auxiliary variable.
2901 If the requested radix is valid, INPUT_RADIX is updated; otherwise,
2902 it is left unchanged. */
2904 static unsigned input_radix_1
= 10;
2906 /* Validate an input or output radix setting, and make sure the user
2907 knows what they really did here. Radix setting is confusing, e.g.
2908 setting the input radix to "10" never changes it! */
2911 set_input_radix (char *args
, int from_tty
, struct cmd_list_element
*c
)
2913 set_input_radix_1 (from_tty
, input_radix_1
);
2917 set_input_radix_1 (int from_tty
, unsigned radix
)
2919 /* We don't currently disallow any input radix except 0 or 1, which don't
2920 make any mathematical sense. In theory, we can deal with any input
2921 radix greater than 1, even if we don't have unique digits for every
2922 value from 0 to radix-1, but in practice we lose on large radix values.
2923 We should either fix the lossage or restrict the radix range more.
2928 input_radix_1
= input_radix
;
2929 error (_("Nonsense input radix ``decimal %u''; input radix unchanged."),
2932 input_radix_1
= input_radix
= radix
;
2935 printf_filtered (_("Input radix now set to "
2936 "decimal %u, hex %x, octal %o.\n"),
2937 radix
, radix
, radix
);
2941 /* The 'set output-radix' command writes to this auxiliary variable.
2942 If the requested radix is valid, OUTPUT_RADIX is updated,
2943 otherwise, it is left unchanged. */
2945 static unsigned output_radix_1
= 10;
2948 set_output_radix (char *args
, int from_tty
, struct cmd_list_element
*c
)
2950 set_output_radix_1 (from_tty
, output_radix_1
);
2954 set_output_radix_1 (int from_tty
, unsigned radix
)
2956 /* Validate the radix and disallow ones that we aren't prepared to
2957 handle correctly, leaving the radix unchanged. */
2961 user_print_options
.output_format
= 'x'; /* hex */
2964 user_print_options
.output_format
= 0; /* decimal */
2967 user_print_options
.output_format
= 'o'; /* octal */
2970 output_radix_1
= output_radix
;
2971 error (_("Unsupported output radix ``decimal %u''; "
2972 "output radix unchanged."),
2975 output_radix_1
= output_radix
= radix
;
2978 printf_filtered (_("Output radix now set to "
2979 "decimal %u, hex %x, octal %o.\n"),
2980 radix
, radix
, radix
);
2984 /* Set both the input and output radix at once. Try to set the output radix
2985 first, since it has the most restrictive range. An radix that is valid as
2986 an output radix is also valid as an input radix.
2988 It may be useful to have an unusual input radix. If the user wishes to
2989 set an input radix that is not valid as an output radix, he needs to use
2990 the 'set input-radix' command. */
2993 set_radix (const char *arg
, int from_tty
)
2997 radix
= (arg
== NULL
) ? 10 : parse_and_eval_long (arg
);
2998 set_output_radix_1 (0, radix
);
2999 set_input_radix_1 (0, radix
);
3002 printf_filtered (_("Input and output radices now set to "
3003 "decimal %u, hex %x, octal %o.\n"),
3004 radix
, radix
, radix
);
3008 /* Show both the input and output radices. */
3011 show_radix (const char *arg
, int from_tty
)
3015 if (input_radix
== output_radix
)
3017 printf_filtered (_("Input and output radices set to "
3018 "decimal %u, hex %x, octal %o.\n"),
3019 input_radix
, input_radix
, input_radix
);
3023 printf_filtered (_("Input radix set to decimal "
3024 "%u, hex %x, octal %o.\n"),
3025 input_radix
, input_radix
, input_radix
);
3026 printf_filtered (_("Output radix set to decimal "
3027 "%u, hex %x, octal %o.\n"),
3028 output_radix
, output_radix
, output_radix
);
3035 set_print (const char *arg
, int from_tty
)
3038 "\"set print\" must be followed by the name of a print subcommand.\n");
3039 help_list (setprintlist
, "set print ", all_commands
, gdb_stdout
);
3043 show_print (const char *args
, int from_tty
)
3045 cmd_show_list (showprintlist
, from_tty
, "");
3049 set_print_raw (const char *arg
, int from_tty
)
3052 "\"set print raw\" must be followed by the name of a \"print raw\" subcommand.\n");
3053 help_list (setprintrawlist
, "set print raw ", all_commands
, gdb_stdout
);
3057 show_print_raw (const char *args
, int from_tty
)
3059 cmd_show_list (showprintrawlist
, from_tty
, "");
3064 _initialize_valprint (void)
3066 add_prefix_cmd ("print", no_class
, set_print
,
3067 _("Generic command for setting how things print."),
3068 &setprintlist
, "set print ", 0, &setlist
);
3069 add_alias_cmd ("p", "print", no_class
, 1, &setlist
);
3070 /* Prefer set print to set prompt. */
3071 add_alias_cmd ("pr", "print", no_class
, 1, &setlist
);
3073 add_prefix_cmd ("print", no_class
, show_print
,
3074 _("Generic command for showing print settings."),
3075 &showprintlist
, "show print ", 0, &showlist
);
3076 add_alias_cmd ("p", "print", no_class
, 1, &showlist
);
3077 add_alias_cmd ("pr", "print", no_class
, 1, &showlist
);
3079 add_prefix_cmd ("raw", no_class
, set_print_raw
,
3081 Generic command for setting what things to print in \"raw\" mode."),
3082 &setprintrawlist
, "set print raw ", 0, &setprintlist
);
3083 add_prefix_cmd ("raw", no_class
, show_print_raw
,
3084 _("Generic command for showing \"print raw\" settings."),
3085 &showprintrawlist
, "show print raw ", 0, &showprintlist
);
3087 add_setshow_uinteger_cmd ("elements", no_class
,
3088 &user_print_options
.print_max
, _("\
3089 Set limit on string chars or array elements to print."), _("\
3090 Show limit on string chars or array elements to print."), _("\
3091 \"set print elements unlimited\" causes there to be no limit."),
3094 &setprintlist
, &showprintlist
);
3096 add_setshow_boolean_cmd ("null-stop", no_class
,
3097 &user_print_options
.stop_print_at_null
, _("\
3098 Set printing of char arrays to stop at first null char."), _("\
3099 Show printing of char arrays to stop at first null char."), NULL
,
3101 show_stop_print_at_null
,
3102 &setprintlist
, &showprintlist
);
3104 add_setshow_uinteger_cmd ("repeats", no_class
,
3105 &user_print_options
.repeat_count_threshold
, _("\
3106 Set threshold for repeated print elements."), _("\
3107 Show threshold for repeated print elements."), _("\
3108 \"set print repeats unlimited\" causes all elements to be individually printed."),
3110 show_repeat_count_threshold
,
3111 &setprintlist
, &showprintlist
);
3113 add_setshow_boolean_cmd ("pretty", class_support
,
3114 &user_print_options
.prettyformat_structs
, _("\
3115 Set pretty formatting of structures."), _("\
3116 Show pretty formatting of structures."), NULL
,
3118 show_prettyformat_structs
,
3119 &setprintlist
, &showprintlist
);
3121 add_setshow_boolean_cmd ("union", class_support
,
3122 &user_print_options
.unionprint
, _("\
3123 Set printing of unions interior to structures."), _("\
3124 Show printing of unions interior to structures."), NULL
,
3127 &setprintlist
, &showprintlist
);
3129 add_setshow_boolean_cmd ("array", class_support
,
3130 &user_print_options
.prettyformat_arrays
, _("\
3131 Set pretty formatting of arrays."), _("\
3132 Show pretty formatting of arrays."), NULL
,
3134 show_prettyformat_arrays
,
3135 &setprintlist
, &showprintlist
);
3137 add_setshow_boolean_cmd ("address", class_support
,
3138 &user_print_options
.addressprint
, _("\
3139 Set printing of addresses."), _("\
3140 Show printing of addresses."), NULL
,
3143 &setprintlist
, &showprintlist
);
3145 add_setshow_boolean_cmd ("symbol", class_support
,
3146 &user_print_options
.symbol_print
, _("\
3147 Set printing of symbol names when printing pointers."), _("\
3148 Show printing of symbol names when printing pointers."),
3151 &setprintlist
, &showprintlist
);
3153 add_setshow_zuinteger_cmd ("input-radix", class_support
, &input_radix_1
,
3155 Set default input radix for entering numbers."), _("\
3156 Show default input radix for entering numbers."), NULL
,
3159 &setlist
, &showlist
);
3161 add_setshow_zuinteger_cmd ("output-radix", class_support
, &output_radix_1
,
3163 Set default output radix for printing of values."), _("\
3164 Show default output radix for printing of values."), NULL
,
3167 &setlist
, &showlist
);
3169 /* The "set radix" and "show radix" commands are special in that
3170 they are like normal set and show commands but allow two normally
3171 independent variables to be either set or shown with a single
3172 command. So the usual deprecated_add_set_cmd() and [deleted]
3173 add_show_from_set() commands aren't really appropriate. */
3174 /* FIXME: i18n: With the new add_setshow_integer command, that is no
3175 longer true - show can display anything. */
3176 add_cmd ("radix", class_support
, set_radix
, _("\
3177 Set default input and output number radices.\n\
3178 Use 'set input-radix' or 'set output-radix' to independently set each.\n\
3179 Without an argument, sets both radices back to the default value of 10."),
3181 add_cmd ("radix", class_support
, show_radix
, _("\
3182 Show the default input and output number radices.\n\
3183 Use 'show input-radix' or 'show output-radix' to independently show each."),
3186 add_setshow_boolean_cmd ("array-indexes", class_support
,
3187 &user_print_options
.print_array_indexes
, _("\
3188 Set printing of array indexes."), _("\
3189 Show printing of array indexes"), NULL
, NULL
, show_print_array_indexes
,
3190 &setprintlist
, &showprintlist
);