1 /* Print values for GDB, the GNU debugger.
3 Copyright (C) 1986-2015 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"
39 /* Maximum number of wchars returned from wchar_iterate. */
42 /* A convenience macro to compute the size of a wchar_t buffer containing X
44 #define WCHAR_BUFLEN(X) ((X) * sizeof (gdb_wchar_t))
46 /* Character buffer size saved while iterating over wchars. */
47 #define WCHAR_BUFLEN_MAX WCHAR_BUFLEN (MAX_WCHARS)
49 /* A structure to encapsulate state information from iterated
50 character conversions. */
51 struct converted_character
53 /* The number of characters converted. */
56 /* The result of the conversion. See charset.h for more. */
57 enum wchar_iterate_result result
;
59 /* The (saved) converted character(s). */
60 gdb_wchar_t chars
[WCHAR_BUFLEN_MAX
];
62 /* The first converted target byte. */
65 /* The number of bytes converted. */
68 /* How many times this character(s) is repeated. */
72 typedef struct converted_character converted_character_d
;
73 DEF_VEC_O (converted_character_d
);
75 /* Command lists for set/show print raw. */
76 struct cmd_list_element
*setprintrawlist
;
77 struct cmd_list_element
*showprintrawlist
;
79 /* Prototypes for local functions */
81 static int partial_memory_read (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
82 int len
, int *errptr
);
84 static void show_print (char *, int);
86 static void set_print (char *, int);
88 static void set_radix (char *, int);
90 static void show_radix (char *, int);
92 static void set_input_radix (char *, int, struct cmd_list_element
*);
94 static void set_input_radix_1 (int, unsigned);
96 static void set_output_radix (char *, int, struct cmd_list_element
*);
98 static void set_output_radix_1 (int, unsigned);
100 void _initialize_valprint (void);
102 #define PRINT_MAX_DEFAULT 200 /* Start print_max off at this value. */
104 struct value_print_options user_print_options
=
106 Val_prettyformat_default
, /* prettyformat */
107 0, /* prettyformat_arrays */
108 0, /* prettyformat_structs */
111 1, /* addressprint */
113 PRINT_MAX_DEFAULT
, /* print_max */
114 10, /* repeat_count_threshold */
115 0, /* output_format */
117 0, /* stop_print_at_null */
118 0, /* print_array_indexes */
120 1, /* static_field_print */
121 1, /* pascal_static_field_print */
127 /* Initialize *OPTS to be a copy of the user print options. */
129 get_user_print_options (struct value_print_options
*opts
)
131 *opts
= user_print_options
;
134 /* Initialize *OPTS to be a copy of the user print options, but with
135 pretty-formatting disabled. */
137 get_no_prettyformat_print_options (struct value_print_options
*opts
)
139 *opts
= user_print_options
;
140 opts
->prettyformat
= Val_no_prettyformat
;
143 /* Initialize *OPTS to be a copy of the user print options, but using
144 FORMAT as the formatting option. */
146 get_formatted_print_options (struct value_print_options
*opts
,
149 *opts
= user_print_options
;
150 opts
->format
= format
;
154 show_print_max (struct ui_file
*file
, int from_tty
,
155 struct cmd_list_element
*c
, const char *value
)
157 fprintf_filtered (file
,
158 _("Limit on string chars or array "
159 "elements to print is %s.\n"),
164 /* Default input and output radixes, and output format letter. */
166 unsigned input_radix
= 10;
168 show_input_radix (struct ui_file
*file
, int from_tty
,
169 struct cmd_list_element
*c
, const char *value
)
171 fprintf_filtered (file
,
172 _("Default input radix for entering numbers is %s.\n"),
176 unsigned output_radix
= 10;
178 show_output_radix (struct ui_file
*file
, int from_tty
,
179 struct cmd_list_element
*c
, const char *value
)
181 fprintf_filtered (file
,
182 _("Default output radix for printing of values is %s.\n"),
186 /* By default we print arrays without printing the index of each element in
187 the array. This behavior can be changed by setting PRINT_ARRAY_INDEXES. */
190 show_print_array_indexes (struct ui_file
*file
, int from_tty
,
191 struct cmd_list_element
*c
, const char *value
)
193 fprintf_filtered (file
, _("Printing of array indexes is %s.\n"), value
);
196 /* Print repeat counts if there are more than this many repetitions of an
197 element in an array. Referenced by the low level language dependent
201 show_repeat_count_threshold (struct ui_file
*file
, int from_tty
,
202 struct cmd_list_element
*c
, const char *value
)
204 fprintf_filtered (file
, _("Threshold for repeated print elements is %s.\n"),
208 /* If nonzero, stops printing of char arrays at first null. */
211 show_stop_print_at_null (struct ui_file
*file
, int from_tty
,
212 struct cmd_list_element
*c
, const char *value
)
214 fprintf_filtered (file
,
215 _("Printing of char arrays to stop "
216 "at first null char is %s.\n"),
220 /* Controls pretty printing of structures. */
223 show_prettyformat_structs (struct ui_file
*file
, int from_tty
,
224 struct cmd_list_element
*c
, const char *value
)
226 fprintf_filtered (file
, _("Pretty formatting of structures is %s.\n"), value
);
229 /* Controls pretty printing of arrays. */
232 show_prettyformat_arrays (struct ui_file
*file
, int from_tty
,
233 struct cmd_list_element
*c
, const char *value
)
235 fprintf_filtered (file
, _("Pretty formatting of arrays is %s.\n"), value
);
238 /* If nonzero, causes unions inside structures or other unions to be
242 show_unionprint (struct ui_file
*file
, int from_tty
,
243 struct cmd_list_element
*c
, const char *value
)
245 fprintf_filtered (file
,
246 _("Printing of unions interior to structures is %s.\n"),
250 /* If nonzero, causes machine addresses to be printed in certain contexts. */
253 show_addressprint (struct ui_file
*file
, int from_tty
,
254 struct cmd_list_element
*c
, const char *value
)
256 fprintf_filtered (file
, _("Printing of addresses is %s.\n"), value
);
260 show_symbol_print (struct ui_file
*file
, int from_tty
,
261 struct cmd_list_element
*c
, const char *value
)
263 fprintf_filtered (file
,
264 _("Printing of symbols when printing pointers is %s.\n"),
270 /* A helper function for val_print. When printing in "summary" mode,
271 we want to print scalar arguments, but not aggregate arguments.
272 This function distinguishes between the two. */
275 val_print_scalar_type_p (struct type
*type
)
277 type
= check_typedef (type
);
278 while (TYPE_CODE (type
) == TYPE_CODE_REF
)
280 type
= TYPE_TARGET_TYPE (type
);
281 type
= check_typedef (type
);
283 switch (TYPE_CODE (type
))
285 case TYPE_CODE_ARRAY
:
286 case TYPE_CODE_STRUCT
:
287 case TYPE_CODE_UNION
:
289 case TYPE_CODE_STRING
:
296 /* See its definition in value.h. */
299 valprint_check_validity (struct ui_file
*stream
,
302 const struct value
*val
)
304 type
= check_typedef (type
);
306 if (TYPE_CODE (type
) != TYPE_CODE_UNION
307 && TYPE_CODE (type
) != TYPE_CODE_STRUCT
308 && TYPE_CODE (type
) != TYPE_CODE_ARRAY
)
310 if (value_bits_any_optimized_out (val
,
311 TARGET_CHAR_BIT
* embedded_offset
,
312 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
314 val_print_optimized_out (val
, stream
);
318 if (value_bits_synthetic_pointer (val
, TARGET_CHAR_BIT
* embedded_offset
,
319 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
321 fputs_filtered (_("<synthetic pointer>"), stream
);
325 if (!value_bytes_available (val
, embedded_offset
, TYPE_LENGTH (type
)))
327 val_print_unavailable (stream
);
336 val_print_optimized_out (const struct value
*val
, struct ui_file
*stream
)
338 if (val
!= NULL
&& value_lval_const (val
) == lval_register
)
339 val_print_not_saved (stream
);
341 fprintf_filtered (stream
, _("<optimized out>"));
345 val_print_not_saved (struct ui_file
*stream
)
347 fprintf_filtered (stream
, _("<not saved>"));
351 val_print_unavailable (struct ui_file
*stream
)
353 fprintf_filtered (stream
, _("<unavailable>"));
357 val_print_invalid_address (struct ui_file
*stream
)
359 fprintf_filtered (stream
, _("<invalid address>"));
362 /* Print a pointer based on the type of its target.
364 Arguments to this functions are roughly the same as those in
365 generic_val_print. A difference is that ADDRESS is the address to print,
366 with embedded_offset already added. ELTTYPE represents
367 the pointed type after check_typedef. */
370 print_unpacked_pointer (struct type
*type
, struct type
*elttype
,
371 CORE_ADDR address
, struct ui_file
*stream
,
372 const struct value_print_options
*options
)
374 struct gdbarch
*gdbarch
= get_type_arch (type
);
376 if (TYPE_CODE (elttype
) == TYPE_CODE_FUNC
)
378 /* Try to print what function it points to. */
379 print_function_pointer_address (options
, gdbarch
, address
, stream
);
383 if (options
->symbol_print
)
384 print_address_demangle (options
, gdbarch
, address
, stream
, demangle
);
385 else if (options
->addressprint
)
386 fputs_filtered (paddress (gdbarch
, address
), stream
);
389 /* A generic val_print that is suitable for use by language
390 implementations of the la_val_print method. This function can
391 handle most type codes, though not all, notably exception
392 TYPE_CODE_UNION and TYPE_CODE_STRUCT, which must be implemented by
395 Most arguments are as to val_print.
397 The additional DECORATIONS argument can be used to customize the
398 output in some small, language-specific ways. */
401 generic_val_print (struct type
*type
, const gdb_byte
*valaddr
,
402 int embedded_offset
, CORE_ADDR address
,
403 struct ui_file
*stream
, int recurse
,
404 const struct value
*original_value
,
405 const struct value_print_options
*options
,
406 const struct generic_val_print_decorations
*decorations
)
408 struct gdbarch
*gdbarch
= get_type_arch (type
);
409 unsigned int i
= 0; /* Number of characters printed. */
411 struct type
*elttype
, *unresolved_elttype
;
412 struct type
*unresolved_type
= type
;
416 type
= check_typedef (type
);
417 switch (TYPE_CODE (type
))
419 case TYPE_CODE_ARRAY
:
420 unresolved_elttype
= TYPE_TARGET_TYPE (type
);
421 elttype
= check_typedef (unresolved_elttype
);
422 if (TYPE_LENGTH (type
) > 0 && TYPE_LENGTH (unresolved_elttype
) > 0)
424 LONGEST low_bound
, high_bound
;
426 if (!get_array_bounds (type
, &low_bound
, &high_bound
))
427 error (_("Could not determine the array high bound"));
429 if (options
->prettyformat_arrays
)
431 print_spaces_filtered (2 + 2 * recurse
, stream
);
434 fprintf_filtered (stream
, "{");
435 val_print_array_elements (type
, valaddr
, embedded_offset
,
437 recurse
, original_value
, options
, 0);
438 fprintf_filtered (stream
, "}");
441 /* Array of unspecified length: treat like pointer to first
443 addr
= address
+ embedded_offset
;
444 print_unpacked_pointer (type
, elttype
, addr
, stream
, options
);
447 case TYPE_CODE_MEMBERPTR
:
448 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
449 original_value
, options
, 0, stream
);
453 if (options
->format
&& options
->format
!= 's')
455 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
456 original_value
, options
, 0, stream
);
459 unresolved_elttype
= TYPE_TARGET_TYPE (type
);
460 elttype
= check_typedef (unresolved_elttype
);
461 addr
= unpack_pointer (type
, valaddr
+ embedded_offset
);
462 print_unpacked_pointer (type
, elttype
, addr
, stream
, options
);
466 elttype
= check_typedef (TYPE_TARGET_TYPE (type
));
467 if (options
->addressprint
)
470 = extract_typed_address (valaddr
+ embedded_offset
, type
);
472 fprintf_filtered (stream
, "@");
473 fputs_filtered (paddress (gdbarch
, addr
), stream
);
474 if (options
->deref_ref
)
475 fputs_filtered (": ", stream
);
477 /* De-reference the reference. */
478 if (options
->deref_ref
)
480 if (TYPE_CODE (elttype
) != TYPE_CODE_UNDEF
)
482 struct value
*deref_val
;
484 deref_val
= coerce_ref_if_computed (original_value
);
485 if (deref_val
!= NULL
)
487 /* More complicated computed references are not supported. */
488 gdb_assert (embedded_offset
== 0);
491 deref_val
= value_at (TYPE_TARGET_TYPE (type
),
492 unpack_pointer (type
,
494 + embedded_offset
)));
496 common_val_print (deref_val
, stream
, recurse
, options
,
500 fputs_filtered ("???", stream
);
507 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
508 original_value
, options
, 0, stream
);
511 len
= TYPE_NFIELDS (type
);
512 val
= unpack_long (type
, valaddr
+ embedded_offset
);
513 for (i
= 0; i
< len
; i
++)
516 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
523 fputs_filtered (TYPE_FIELD_NAME (type
, i
), stream
);
525 else if (TYPE_FLAG_ENUM (type
))
529 /* We have a "flag" enum, so we try to decompose it into
530 pieces as appropriate. A flag enum has disjoint
531 constants by definition. */
532 fputs_filtered ("(", stream
);
533 for (i
= 0; i
< len
; ++i
)
537 if ((val
& TYPE_FIELD_ENUMVAL (type
, i
)) != 0)
540 fputs_filtered (" | ", stream
);
543 val
&= ~TYPE_FIELD_ENUMVAL (type
, i
);
544 fputs_filtered (TYPE_FIELD_NAME (type
, i
), stream
);
548 if (first
|| val
!= 0)
551 fputs_filtered (" | ", stream
);
552 fputs_filtered ("unknown: ", stream
);
553 print_longest (stream
, 'd', 0, val
);
556 fputs_filtered (")", stream
);
559 print_longest (stream
, 'd', 0, val
);
562 case TYPE_CODE_FLAGS
:
564 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
565 original_value
, options
, 0, stream
);
567 val_print_type_code_flags (type
, valaddr
+ embedded_offset
,
572 case TYPE_CODE_METHOD
:
575 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
576 original_value
, options
, 0, stream
);
579 /* FIXME, we should consider, at least for ANSI C language,
580 eliminating the distinction made between FUNCs and POINTERs
582 fprintf_filtered (stream
, "{");
583 type_print (type
, "", stream
, -1);
584 fprintf_filtered (stream
, "} ");
585 /* Try to print what function it points to, and its address. */
586 print_address_demangle (options
, gdbarch
, address
, stream
, demangle
);
590 if (options
->format
|| options
->output_format
)
592 struct value_print_options opts
= *options
;
593 opts
.format
= (options
->format
? options
->format
594 : options
->output_format
);
595 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
596 original_value
, &opts
, 0, stream
);
600 val
= unpack_long (type
, valaddr
+ embedded_offset
);
602 fputs_filtered (decorations
->false_name
, stream
);
604 fputs_filtered (decorations
->true_name
, stream
);
606 print_longest (stream
, 'd', 0, val
);
610 case TYPE_CODE_RANGE
:
611 /* FIXME: create_static_range_type does not set the unsigned bit in a
612 range type (I think it probably should copy it from the
613 target type), so we won't print values which are too large to
614 fit in a signed integer correctly. */
615 /* FIXME: Doesn't handle ranges of enums correctly. (Can't just
616 print with the target type, though, because the size of our
617 type and the target type might differ). */
622 if (options
->format
|| options
->output_format
)
624 struct value_print_options opts
= *options
;
626 opts
.format
= (options
->format
? options
->format
627 : options
->output_format
);
628 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
629 original_value
, &opts
, 0, stream
);
632 val_print_type_code_int (type
, valaddr
+ embedded_offset
, stream
);
636 if (options
->format
|| options
->output_format
)
638 struct value_print_options opts
= *options
;
640 opts
.format
= (options
->format
? options
->format
641 : options
->output_format
);
642 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
643 original_value
, &opts
, 0, stream
);
647 val
= unpack_long (type
, valaddr
+ embedded_offset
);
648 if (TYPE_UNSIGNED (type
))
649 fprintf_filtered (stream
, "%u", (unsigned int) val
);
651 fprintf_filtered (stream
, "%d", (int) val
);
652 fputs_filtered (" ", stream
);
653 LA_PRINT_CHAR (val
, unresolved_type
, stream
);
660 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
661 original_value
, options
, 0, stream
);
665 print_floating (valaddr
+ embedded_offset
, type
, stream
);
669 case TYPE_CODE_DECFLOAT
:
671 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
672 original_value
, options
, 0, stream
);
674 print_decimal_floating (valaddr
+ embedded_offset
,
679 fputs_filtered (decorations
->void_name
, stream
);
682 case TYPE_CODE_ERROR
:
683 fprintf_filtered (stream
, "%s", TYPE_ERROR_NAME (type
));
686 case TYPE_CODE_UNDEF
:
687 /* This happens (without TYPE_FLAG_STUB set) on systems which
688 don't use dbx xrefs (NO_DBX_XREFS in gcc) if a file has a
689 "struct foo *bar" and no complete type for struct foo in that
691 fprintf_filtered (stream
, _("<incomplete type>"));
694 case TYPE_CODE_COMPLEX
:
695 fprintf_filtered (stream
, "%s", decorations
->complex_prefix
);
697 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
),
698 valaddr
, embedded_offset
,
699 original_value
, options
, 0, stream
);
701 print_floating (valaddr
+ embedded_offset
,
702 TYPE_TARGET_TYPE (type
),
704 fprintf_filtered (stream
, "%s", decorations
->complex_infix
);
706 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
),
709 + TYPE_LENGTH (TYPE_TARGET_TYPE (type
)),
713 print_floating (valaddr
+ embedded_offset
714 + TYPE_LENGTH (TYPE_TARGET_TYPE (type
)),
715 TYPE_TARGET_TYPE (type
),
717 fprintf_filtered (stream
, "%s", decorations
->complex_suffix
);
720 case TYPE_CODE_UNION
:
721 case TYPE_CODE_STRUCT
:
722 case TYPE_CODE_METHODPTR
:
724 error (_("Unhandled type code %d in symbol table."),
730 /* Print using the given LANGUAGE the data of type TYPE located at
731 VALADDR + EMBEDDED_OFFSET (within GDB), which came from the
732 inferior at address ADDRESS + EMBEDDED_OFFSET, onto stdio stream
733 STREAM according to OPTIONS. VAL is the whole object that came
734 from ADDRESS. VALADDR must point to the head of VAL's contents
737 The language printers will pass down an adjusted EMBEDDED_OFFSET to
738 further helper subroutines as subfields of TYPE are printed. In
739 such cases, VALADDR is passed down unadjusted, as well as VAL, so
740 that VAL can be queried for metadata about the contents data being
741 printed, using EMBEDDED_OFFSET as an offset into VAL's contents
742 buffer. For example: "has this field been optimized out", or "I'm
743 printing an object while inspecting a traceframe; has this
744 particular piece of data been collected?".
746 RECURSE indicates the amount of indentation to supply before
747 continuation lines; this amount is roughly twice the value of
751 val_print (struct type
*type
, const gdb_byte
*valaddr
, int embedded_offset
,
752 CORE_ADDR address
, struct ui_file
*stream
, int recurse
,
753 const struct value
*val
,
754 const struct value_print_options
*options
,
755 const struct language_defn
*language
)
758 struct value_print_options local_opts
= *options
;
759 struct type
*real_type
= check_typedef (type
);
761 if (local_opts
.prettyformat
== Val_prettyformat_default
)
762 local_opts
.prettyformat
= (local_opts
.prettyformat_structs
763 ? Val_prettyformat
: Val_no_prettyformat
);
767 /* Ensure that the type is complete and not just a stub. If the type is
768 only a stub and we can't find and substitute its complete type, then
769 print appropriate string and return. */
771 if (TYPE_STUB (real_type
))
773 fprintf_filtered (stream
, _("<incomplete type>"));
778 if (!valprint_check_validity (stream
, real_type
, embedded_offset
, val
))
783 ret
= apply_ext_lang_val_pretty_printer (type
, valaddr
, embedded_offset
,
784 address
, stream
, recurse
,
785 val
, options
, language
);
790 /* Handle summary mode. If the value is a scalar, print it;
791 otherwise, print an ellipsis. */
792 if (options
->summary
&& !val_print_scalar_type_p (type
))
794 fprintf_filtered (stream
, "...");
800 language
->la_val_print (type
, valaddr
, embedded_offset
, address
,
801 stream
, recurse
, val
,
804 CATCH (except
, RETURN_MASK_ERROR
)
806 fprintf_filtered (stream
, _("<error reading variable>"));
811 /* Check whether the value VAL is printable. Return 1 if it is;
812 return 0 and print an appropriate error message to STREAM according to
813 OPTIONS if it is not. */
816 value_check_printable (struct value
*val
, struct ui_file
*stream
,
817 const struct value_print_options
*options
)
821 fprintf_filtered (stream
, _("<address of value unknown>"));
825 if (value_entirely_optimized_out (val
))
827 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
828 fprintf_filtered (stream
, "...");
830 val_print_optimized_out (val
, stream
);
834 if (value_entirely_unavailable (val
))
836 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
837 fprintf_filtered (stream
, "...");
839 val_print_unavailable (stream
);
843 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_INTERNAL_FUNCTION
)
845 fprintf_filtered (stream
, _("<internal function %s>"),
846 value_internal_function_name (val
));
853 /* Print using the given LANGUAGE the value VAL onto stream STREAM according
856 This is a preferable interface to val_print, above, because it uses
857 GDB's value mechanism. */
860 common_val_print (struct value
*val
, struct ui_file
*stream
, int recurse
,
861 const struct value_print_options
*options
,
862 const struct language_defn
*language
)
864 if (!value_check_printable (val
, stream
, options
))
867 if (language
->la_language
== language_ada
)
868 /* The value might have a dynamic type, which would cause trouble
869 below when trying to extract the value contents (since the value
870 size is determined from the type size which is unknown). So
871 get a fixed representation of our value. */
872 val
= ada_to_fixed_value (val
);
874 val_print (value_type (val
), value_contents_for_printing (val
),
875 value_embedded_offset (val
), value_address (val
),
877 val
, options
, language
);
880 /* Print on stream STREAM the value VAL according to OPTIONS. The value
881 is printed using the current_language syntax. */
884 value_print (struct value
*val
, struct ui_file
*stream
,
885 const struct value_print_options
*options
)
887 if (!value_check_printable (val
, stream
, options
))
893 = apply_ext_lang_val_pretty_printer (value_type (val
),
894 value_contents_for_printing (val
),
895 value_embedded_offset (val
),
898 val
, options
, current_language
);
904 LA_VALUE_PRINT (val
, stream
, options
);
907 /* Called by various <lang>_val_print routines to print
908 TYPE_CODE_INT's. TYPE is the type. VALADDR is the address of the
909 value. STREAM is where to print the value. */
912 val_print_type_code_int (struct type
*type
, const gdb_byte
*valaddr
,
913 struct ui_file
*stream
)
915 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (type
));
917 if (TYPE_LENGTH (type
) > sizeof (LONGEST
))
921 if (TYPE_UNSIGNED (type
)
922 && extract_long_unsigned_integer (valaddr
, TYPE_LENGTH (type
),
925 print_longest (stream
, 'u', 0, val
);
929 /* Signed, or we couldn't turn an unsigned value into a
930 LONGEST. For signed values, one could assume two's
931 complement (a reasonable assumption, I think) and do
933 print_hex_chars (stream
, (unsigned char *) valaddr
,
934 TYPE_LENGTH (type
), byte_order
);
939 print_longest (stream
, TYPE_UNSIGNED (type
) ? 'u' : 'd', 0,
940 unpack_long (type
, valaddr
));
945 val_print_type_code_flags (struct type
*type
, const gdb_byte
*valaddr
,
946 struct ui_file
*stream
)
948 ULONGEST val
= unpack_long (type
, valaddr
);
949 int bitpos
, nfields
= TYPE_NFIELDS (type
);
951 fputs_filtered ("[ ", stream
);
952 for (bitpos
= 0; bitpos
< nfields
; bitpos
++)
954 if (TYPE_FIELD_BITPOS (type
, bitpos
) != -1
955 && (val
& ((ULONGEST
)1 << bitpos
)))
957 if (TYPE_FIELD_NAME (type
, bitpos
))
958 fprintf_filtered (stream
, "%s ", TYPE_FIELD_NAME (type
, bitpos
));
960 fprintf_filtered (stream
, "#%d ", bitpos
);
963 fputs_filtered ("]", stream
);
966 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
967 according to OPTIONS and SIZE on STREAM. Format i is not supported
970 This is how the elements of an array or structure are printed
974 val_print_scalar_formatted (struct type
*type
,
975 const gdb_byte
*valaddr
, int embedded_offset
,
976 const struct value
*val
,
977 const struct value_print_options
*options
,
979 struct ui_file
*stream
)
981 gdb_assert (val
!= NULL
);
982 gdb_assert (valaddr
== value_contents_for_printing_const (val
));
984 /* If we get here with a string format, try again without it. Go
985 all the way back to the language printers, which may call us
987 if (options
->format
== 's')
989 struct value_print_options opts
= *options
;
992 val_print (type
, valaddr
, embedded_offset
, 0, stream
, 0, val
, &opts
,
997 /* A scalar object that does not have all bits available can't be
998 printed, because all bits contribute to its representation. */
999 if (value_bits_any_optimized_out (val
,
1000 TARGET_CHAR_BIT
* embedded_offset
,
1001 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
1002 val_print_optimized_out (val
, stream
);
1003 else if (!value_bytes_available (val
, embedded_offset
, TYPE_LENGTH (type
)))
1004 val_print_unavailable (stream
);
1006 print_scalar_formatted (valaddr
+ embedded_offset
, type
,
1007 options
, size
, stream
);
1010 /* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g.
1011 The raison d'etre of this function is to consolidate printing of
1012 LONG_LONG's into this one function. The format chars b,h,w,g are
1013 from print_scalar_formatted(). Numbers are printed using C
1016 USE_C_FORMAT means to use C format in all cases. Without it,
1017 'o' and 'x' format do not include the standard C radix prefix
1020 Hilfinger/2004-09-09: USE_C_FORMAT was originally called USE_LOCAL
1021 and was intended to request formating according to the current
1022 language and would be used for most integers that GDB prints. The
1023 exceptional cases were things like protocols where the format of
1024 the integer is a protocol thing, not a user-visible thing). The
1025 parameter remains to preserve the information of what things might
1026 be printed with language-specific format, should we ever resurrect
1030 print_longest (struct ui_file
*stream
, int format
, int use_c_format
,
1038 val
= int_string (val_long
, 10, 1, 0, 1); break;
1040 val
= int_string (val_long
, 10, 0, 0, 1); break;
1042 val
= int_string (val_long
, 16, 0, 0, use_c_format
); break;
1044 val
= int_string (val_long
, 16, 0, 2, 1); break;
1046 val
= int_string (val_long
, 16, 0, 4, 1); break;
1048 val
= int_string (val_long
, 16, 0, 8, 1); break;
1050 val
= int_string (val_long
, 16, 0, 16, 1); break;
1053 val
= int_string (val_long
, 8, 0, 0, use_c_format
); break;
1055 internal_error (__FILE__
, __LINE__
,
1056 _("failed internal consistency check"));
1058 fputs_filtered (val
, stream
);
1061 /* This used to be a macro, but I don't think it is called often enough
1062 to merit such treatment. */
1063 /* Convert a LONGEST to an int. This is used in contexts (e.g. number of
1064 arguments to a function, number in a value history, register number, etc.)
1065 where the value must not be larger than can fit in an int. */
1068 longest_to_int (LONGEST arg
)
1070 /* Let the compiler do the work. */
1071 int rtnval
= (int) arg
;
1073 /* Check for overflows or underflows. */
1074 if (sizeof (LONGEST
) > sizeof (int))
1078 error (_("Value out of range."));
1084 /* Print a floating point value of type TYPE (not always a
1085 TYPE_CODE_FLT), pointed to in GDB by VALADDR, on STREAM. */
1088 print_floating (const gdb_byte
*valaddr
, struct type
*type
,
1089 struct ui_file
*stream
)
1093 const struct floatformat
*fmt
= NULL
;
1094 unsigned len
= TYPE_LENGTH (type
);
1095 enum float_kind kind
;
1097 /* If it is a floating-point, check for obvious problems. */
1098 if (TYPE_CODE (type
) == TYPE_CODE_FLT
)
1099 fmt
= floatformat_from_type (type
);
1102 kind
= floatformat_classify (fmt
, valaddr
);
1103 if (kind
== float_nan
)
1105 if (floatformat_is_negative (fmt
, valaddr
))
1106 fprintf_filtered (stream
, "-");
1107 fprintf_filtered (stream
, "nan(");
1108 fputs_filtered ("0x", stream
);
1109 fputs_filtered (floatformat_mantissa (fmt
, valaddr
), stream
);
1110 fprintf_filtered (stream
, ")");
1113 else if (kind
== float_infinite
)
1115 if (floatformat_is_negative (fmt
, valaddr
))
1116 fputs_filtered ("-", stream
);
1117 fputs_filtered ("inf", stream
);
1122 /* NOTE: cagney/2002-01-15: The TYPE passed into print_floating()
1123 isn't necessarily a TYPE_CODE_FLT. Consequently, unpack_double
1124 needs to be used as that takes care of any necessary type
1125 conversions. Such conversions are of course direct to DOUBLEST
1126 and disregard any possible target floating point limitations.
1127 For instance, a u64 would be converted and displayed exactly on a
1128 host with 80 bit DOUBLEST but with loss of information on a host
1129 with 64 bit DOUBLEST. */
1131 doub
= unpack_double (type
, valaddr
, &inv
);
1134 fprintf_filtered (stream
, "<invalid float value>");
1138 /* FIXME: kettenis/2001-01-20: The following code makes too much
1139 assumptions about the host and target floating point format. */
1141 /* NOTE: cagney/2002-02-03: Since the TYPE of what was passed in may
1142 not necessarily be a TYPE_CODE_FLT, the below ignores that and
1143 instead uses the type's length to determine the precision of the
1144 floating-point value being printed. */
1146 if (len
< sizeof (double))
1147 fprintf_filtered (stream
, "%.9g", (double) doub
);
1148 else if (len
== sizeof (double))
1149 fprintf_filtered (stream
, "%.17g", (double) doub
);
1151 #ifdef PRINTF_HAS_LONG_DOUBLE
1152 fprintf_filtered (stream
, "%.35Lg", doub
);
1154 /* This at least wins with values that are representable as
1156 fprintf_filtered (stream
, "%.17g", (double) doub
);
1161 print_decimal_floating (const gdb_byte
*valaddr
, struct type
*type
,
1162 struct ui_file
*stream
)
1164 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (type
));
1165 char decstr
[MAX_DECIMAL_STRING
];
1166 unsigned len
= TYPE_LENGTH (type
);
1168 decimal_to_string (valaddr
, len
, byte_order
, decstr
);
1169 fputs_filtered (decstr
, stream
);
1174 print_binary_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1175 unsigned len
, enum bfd_endian byte_order
)
1178 #define BITS_IN_BYTES 8
1184 /* Declared "int" so it will be signed.
1185 This ensures that right shift will shift in zeros. */
1187 const int mask
= 0x080;
1189 /* FIXME: We should be not printing leading zeroes in most cases. */
1191 if (byte_order
== BFD_ENDIAN_BIG
)
1197 /* Every byte has 8 binary characters; peel off
1198 and print from the MSB end. */
1200 for (i
= 0; i
< (BITS_IN_BYTES
* sizeof (*p
)); i
++)
1202 if (*p
& (mask
>> i
))
1207 fprintf_filtered (stream
, "%1d", b
);
1213 for (p
= valaddr
+ len
- 1;
1217 for (i
= 0; i
< (BITS_IN_BYTES
* sizeof (*p
)); i
++)
1219 if (*p
& (mask
>> i
))
1224 fprintf_filtered (stream
, "%1d", b
);
1230 /* VALADDR points to an integer of LEN bytes.
1231 Print it in octal on stream or format it in buf. */
1234 print_octal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1235 unsigned len
, enum bfd_endian byte_order
)
1238 unsigned char octa1
, octa2
, octa3
, carry
;
1241 /* FIXME: We should be not printing leading zeroes in most cases. */
1244 /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track
1245 * the extra bits, which cycle every three bytes:
1247 * Byte side: 0 1 2 3
1249 * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 |
1251 * Octal side: 0 1 carry 3 4 carry ...
1253 * Cycle number: 0 1 2
1255 * But of course we are printing from the high side, so we have to
1256 * figure out where in the cycle we are so that we end up with no
1257 * left over bits at the end.
1259 #define BITS_IN_OCTAL 3
1260 #define HIGH_ZERO 0340
1261 #define LOW_ZERO 0016
1262 #define CARRY_ZERO 0003
1263 #define HIGH_ONE 0200
1264 #define MID_ONE 0160
1265 #define LOW_ONE 0016
1266 #define CARRY_ONE 0001
1267 #define HIGH_TWO 0300
1268 #define MID_TWO 0070
1269 #define LOW_TWO 0007
1271 /* For 32 we start in cycle 2, with two bits and one bit carry;
1272 for 64 in cycle in cycle 1, with one bit and a two bit carry. */
1274 cycle
= (len
* BITS_IN_BYTES
) % BITS_IN_OCTAL
;
1277 fputs_filtered ("0", stream
);
1278 if (byte_order
== BFD_ENDIAN_BIG
)
1287 /* No carry in, carry out two bits. */
1289 octa1
= (HIGH_ZERO
& *p
) >> 5;
1290 octa2
= (LOW_ZERO
& *p
) >> 2;
1291 carry
= (CARRY_ZERO
& *p
);
1292 fprintf_filtered (stream
, "%o", octa1
);
1293 fprintf_filtered (stream
, "%o", octa2
);
1297 /* Carry in two bits, carry out one bit. */
1299 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1300 octa2
= (MID_ONE
& *p
) >> 4;
1301 octa3
= (LOW_ONE
& *p
) >> 1;
1302 carry
= (CARRY_ONE
& *p
);
1303 fprintf_filtered (stream
, "%o", octa1
);
1304 fprintf_filtered (stream
, "%o", octa2
);
1305 fprintf_filtered (stream
, "%o", octa3
);
1309 /* Carry in one bit, no carry out. */
1311 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1312 octa2
= (MID_TWO
& *p
) >> 3;
1313 octa3
= (LOW_TWO
& *p
);
1315 fprintf_filtered (stream
, "%o", octa1
);
1316 fprintf_filtered (stream
, "%o", octa2
);
1317 fprintf_filtered (stream
, "%o", octa3
);
1321 error (_("Internal error in octal conversion;"));
1325 cycle
= cycle
% BITS_IN_OCTAL
;
1330 for (p
= valaddr
+ len
- 1;
1337 /* Carry out, no carry in */
1339 octa1
= (HIGH_ZERO
& *p
) >> 5;
1340 octa2
= (LOW_ZERO
& *p
) >> 2;
1341 carry
= (CARRY_ZERO
& *p
);
1342 fprintf_filtered (stream
, "%o", octa1
);
1343 fprintf_filtered (stream
, "%o", octa2
);
1347 /* Carry in, carry out */
1349 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1350 octa2
= (MID_ONE
& *p
) >> 4;
1351 octa3
= (LOW_ONE
& *p
) >> 1;
1352 carry
= (CARRY_ONE
& *p
);
1353 fprintf_filtered (stream
, "%o", octa1
);
1354 fprintf_filtered (stream
, "%o", octa2
);
1355 fprintf_filtered (stream
, "%o", octa3
);
1359 /* Carry in, no carry out */
1361 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1362 octa2
= (MID_TWO
& *p
) >> 3;
1363 octa3
= (LOW_TWO
& *p
);
1365 fprintf_filtered (stream
, "%o", octa1
);
1366 fprintf_filtered (stream
, "%o", octa2
);
1367 fprintf_filtered (stream
, "%o", octa3
);
1371 error (_("Internal error in octal conversion;"));
1375 cycle
= cycle
% BITS_IN_OCTAL
;
1381 /* VALADDR points to an integer of LEN bytes.
1382 Print it in decimal on stream or format it in buf. */
1385 print_decimal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1386 unsigned len
, enum bfd_endian byte_order
)
1389 #define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */
1390 #define CARRY_LEFT( x ) ((x) % TEN)
1391 #define SHIFT( x ) ((x) << 4)
1392 #define LOW_NIBBLE( x ) ( (x) & 0x00F)
1393 #define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4)
1396 unsigned char *digits
;
1399 int i
, j
, decimal_digits
;
1403 /* Base-ten number is less than twice as many digits
1404 as the base 16 number, which is 2 digits per byte. */
1406 decimal_len
= len
* 2 * 2;
1407 digits
= xmalloc (decimal_len
);
1409 for (i
= 0; i
< decimal_len
; i
++)
1414 /* Ok, we have an unknown number of bytes of data to be printed in
1417 * Given a hex number (in nibbles) as XYZ, we start by taking X and
1418 * decemalizing it as "x1 x2" in two decimal nibbles. Then we multiply
1419 * the nibbles by 16, add Y and re-decimalize. Repeat with Z.
1421 * The trick is that "digits" holds a base-10 number, but sometimes
1422 * the individual digits are > 10.
1424 * Outer loop is per nibble (hex digit) of input, from MSD end to
1427 decimal_digits
= 0; /* Number of decimal digits so far */
1428 p
= (byte_order
== BFD_ENDIAN_BIG
) ? valaddr
: valaddr
+ len
- 1;
1430 while ((byte_order
== BFD_ENDIAN_BIG
) ? (p
< valaddr
+ len
) : (p
>= valaddr
))
1433 * Multiply current base-ten number by 16 in place.
1434 * Each digit was between 0 and 9, now is between
1437 for (j
= 0; j
< decimal_digits
; j
++)
1439 digits
[j
] = SHIFT (digits
[j
]);
1442 /* Take the next nibble off the input and add it to what
1443 * we've got in the LSB position. Bottom 'digit' is now
1444 * between 0 and 159.
1446 * "flip" is used to run this loop twice for each byte.
1450 /* Take top nibble. */
1452 digits
[0] += HIGH_NIBBLE (*p
);
1457 /* Take low nibble and bump our pointer "p". */
1459 digits
[0] += LOW_NIBBLE (*p
);
1460 if (byte_order
== BFD_ENDIAN_BIG
)
1467 /* Re-decimalize. We have to do this often enough
1468 * that we don't overflow, but once per nibble is
1469 * overkill. Easier this way, though. Note that the
1470 * carry is often larger than 10 (e.g. max initial
1471 * carry out of lowest nibble is 15, could bubble all
1472 * the way up greater than 10). So we have to do
1473 * the carrying beyond the last current digit.
1476 for (j
= 0; j
< decimal_len
- 1; j
++)
1480 /* "/" won't handle an unsigned char with
1481 * a value that if signed would be negative.
1482 * So extend to longword int via "dummy".
1485 carry
= CARRY_OUT (dummy
);
1486 digits
[j
] = CARRY_LEFT (dummy
);
1488 if (j
>= decimal_digits
&& carry
== 0)
1491 * All higher digits are 0 and we
1492 * no longer have a carry.
1494 * Note: "j" is 0-based, "decimal_digits" is
1497 decimal_digits
= j
+ 1;
1503 /* Ok, now "digits" is the decimal representation, with
1504 the "decimal_digits" actual digits. Print! */
1506 for (i
= decimal_digits
- 1; i
>= 0; i
--)
1508 fprintf_filtered (stream
, "%1d", digits
[i
]);
1513 /* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */
1516 print_hex_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1517 unsigned len
, enum bfd_endian byte_order
)
1521 /* FIXME: We should be not printing leading zeroes in most cases. */
1523 fputs_filtered ("0x", stream
);
1524 if (byte_order
== BFD_ENDIAN_BIG
)
1530 fprintf_filtered (stream
, "%02x", *p
);
1535 for (p
= valaddr
+ len
- 1;
1539 fprintf_filtered (stream
, "%02x", *p
);
1544 /* VALADDR points to a char integer of LEN bytes.
1545 Print it out in appropriate language form on stream.
1546 Omit any leading zero chars. */
1549 print_char_chars (struct ui_file
*stream
, struct type
*type
,
1550 const gdb_byte
*valaddr
,
1551 unsigned len
, enum bfd_endian byte_order
)
1555 if (byte_order
== BFD_ENDIAN_BIG
)
1558 while (p
< valaddr
+ len
- 1 && *p
== 0)
1561 while (p
< valaddr
+ len
)
1563 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
1569 p
= valaddr
+ len
- 1;
1570 while (p
> valaddr
&& *p
== 0)
1573 while (p
>= valaddr
)
1575 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
1581 /* Print function pointer with inferior address ADDRESS onto stdio
1585 print_function_pointer_address (const struct value_print_options
*options
,
1586 struct gdbarch
*gdbarch
,
1588 struct ui_file
*stream
)
1591 = gdbarch_convert_from_func_ptr_addr (gdbarch
, address
,
1594 /* If the function pointer is represented by a description, print
1595 the address of the description. */
1596 if (options
->addressprint
&& func_addr
!= address
)
1598 fputs_filtered ("@", stream
);
1599 fputs_filtered (paddress (gdbarch
, address
), stream
);
1600 fputs_filtered (": ", stream
);
1602 print_address_demangle (options
, gdbarch
, func_addr
, stream
, demangle
);
1606 /* Print on STREAM using the given OPTIONS the index for the element
1607 at INDEX of an array whose index type is INDEX_TYPE. */
1610 maybe_print_array_index (struct type
*index_type
, LONGEST index
,
1611 struct ui_file
*stream
,
1612 const struct value_print_options
*options
)
1614 struct value
*index_value
;
1616 if (!options
->print_array_indexes
)
1619 index_value
= value_from_longest (index_type
, index
);
1621 LA_PRINT_ARRAY_INDEX (index_value
, stream
, options
);
1624 /* Called by various <lang>_val_print routines to print elements of an
1625 array in the form "<elem1>, <elem2>, <elem3>, ...".
1627 (FIXME?) Assumes array element separator is a comma, which is correct
1628 for all languages currently handled.
1629 (FIXME?) Some languages have a notation for repeated array elements,
1630 perhaps we should try to use that notation when appropriate. */
1633 val_print_array_elements (struct type
*type
,
1634 const gdb_byte
*valaddr
, int embedded_offset
,
1635 CORE_ADDR address
, struct ui_file
*stream
,
1637 const struct value
*val
,
1638 const struct value_print_options
*options
,
1641 unsigned int things_printed
= 0;
1643 struct type
*elttype
, *index_type
, *base_index_type
;
1645 /* Position of the array element we are examining to see
1646 whether it is repeated. */
1648 /* Number of repetitions we have detected so far. */
1650 LONGEST low_bound
, high_bound
;
1651 LONGEST low_pos
, high_pos
;
1653 elttype
= TYPE_TARGET_TYPE (type
);
1654 eltlen
= TYPE_LENGTH (check_typedef (elttype
));
1655 index_type
= TYPE_INDEX_TYPE (type
);
1657 if (get_array_bounds (type
, &low_bound
, &high_bound
))
1659 if (TYPE_CODE (index_type
) == TYPE_CODE_RANGE
)
1660 base_index_type
= TYPE_TARGET_TYPE (index_type
);
1662 base_index_type
= index_type
;
1664 /* Non-contiguous enumerations types can by used as index types
1665 in some languages (e.g. Ada). In this case, the array length
1666 shall be computed from the positions of the first and last
1667 literal in the enumeration type, and not from the values
1668 of these literals. */
1669 if (!discrete_position (base_index_type
, low_bound
, &low_pos
)
1670 || !discrete_position (base_index_type
, high_bound
, &high_pos
))
1672 warning (_("unable to get positions in array, use bounds instead"));
1673 low_pos
= low_bound
;
1674 high_pos
= high_bound
;
1677 /* The array length should normally be HIGH_POS - LOW_POS + 1.
1678 But we have to be a little extra careful, because some languages
1679 such as Ada allow LOW_POS to be greater than HIGH_POS for
1680 empty arrays. In that situation, the array length is just zero,
1682 if (low_pos
> high_pos
)
1685 len
= high_pos
- low_pos
+ 1;
1689 warning (_("unable to get bounds of array, assuming null array"));
1694 annotate_array_section_begin (i
, elttype
);
1696 for (; i
< len
&& things_printed
< options
->print_max
; i
++)
1700 if (options
->prettyformat_arrays
)
1702 fprintf_filtered (stream
, ",\n");
1703 print_spaces_filtered (2 + 2 * recurse
, stream
);
1707 fprintf_filtered (stream
, ", ");
1710 wrap_here (n_spaces (2 + 2 * recurse
));
1711 maybe_print_array_index (index_type
, i
+ low_bound
,
1716 /* Only check for reps if repeat_count_threshold is not set to
1717 UINT_MAX (unlimited). */
1718 if (options
->repeat_count_threshold
< UINT_MAX
)
1721 && value_contents_eq (val
,
1722 embedded_offset
+ i
* eltlen
,
1733 if (reps
> options
->repeat_count_threshold
)
1735 val_print (elttype
, valaddr
, embedded_offset
+ i
* eltlen
,
1736 address
, stream
, recurse
+ 1, val
, options
,
1738 annotate_elt_rep (reps
);
1739 fprintf_filtered (stream
, " <repeats %u times>", reps
);
1740 annotate_elt_rep_end ();
1743 things_printed
+= options
->repeat_count_threshold
;
1747 val_print (elttype
, valaddr
, embedded_offset
+ i
* eltlen
,
1749 stream
, recurse
+ 1, val
, options
, current_language
);
1754 annotate_array_section_end ();
1757 fprintf_filtered (stream
, "...");
1761 /* Read LEN bytes of target memory at address MEMADDR, placing the
1762 results in GDB's memory at MYADDR. Returns a count of the bytes
1763 actually read, and optionally a target_xfer_status value in the
1764 location pointed to by ERRPTR if ERRPTR is non-null. */
1766 /* FIXME: cagney/1999-10-14: Only used by val_print_string. Can this
1767 function be eliminated. */
1770 partial_memory_read (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
1771 int len
, int *errptr
)
1773 int nread
; /* Number of bytes actually read. */
1774 int errcode
; /* Error from last read. */
1776 /* First try a complete read. */
1777 errcode
= target_read_memory (memaddr
, myaddr
, len
);
1785 /* Loop, reading one byte at a time until we get as much as we can. */
1786 for (errcode
= 0, nread
= 0; len
> 0 && errcode
== 0; nread
++, len
--)
1788 errcode
= target_read_memory (memaddr
++, myaddr
++, 1);
1790 /* If an error, the last read was unsuccessful, so adjust count. */
1803 /* Read a string from the inferior, at ADDR, with LEN characters of WIDTH bytes
1804 each. Fetch at most FETCHLIMIT characters. BUFFER will be set to a newly
1805 allocated buffer containing the string, which the caller is responsible to
1806 free, and BYTES_READ will be set to the number of bytes read. Returns 0 on
1807 success, or a target_xfer_status on failure.
1809 If LEN > 0, reads the lesser of LEN or FETCHLIMIT characters
1810 (including eventual NULs in the middle or end of the string).
1812 If LEN is -1, stops at the first null character (not necessarily
1813 the first null byte) up to a maximum of FETCHLIMIT characters. Set
1814 FETCHLIMIT to UINT_MAX to read as many characters as possible from
1817 Unless an exception is thrown, BUFFER will always be allocated, even on
1818 failure. In this case, some characters might have been read before the
1819 failure happened. Check BYTES_READ to recognize this situation.
1821 Note: There was a FIXME asking to make this code use target_read_string,
1822 but this function is more general (can read past null characters, up to
1823 given LEN). Besides, it is used much more often than target_read_string
1824 so it is more tested. Perhaps callers of target_read_string should use
1825 this function instead? */
1828 read_string (CORE_ADDR addr
, int len
, int width
, unsigned int fetchlimit
,
1829 enum bfd_endian byte_order
, gdb_byte
**buffer
, int *bytes_read
)
1831 int errcode
; /* Errno returned from bad reads. */
1832 unsigned int nfetch
; /* Chars to fetch / chars fetched. */
1833 gdb_byte
*bufptr
; /* Pointer to next available byte in
1835 struct cleanup
*old_chain
= NULL
; /* Top of the old cleanup chain. */
1837 /* Loop until we either have all the characters, or we encounter
1838 some error, such as bumping into the end of the address space. */
1842 old_chain
= make_cleanup (free_current_contents
, buffer
);
1846 /* We want fetchlimit chars, so we might as well read them all in
1848 unsigned int fetchlen
= min (len
, fetchlimit
);
1850 *buffer
= (gdb_byte
*) xmalloc (fetchlen
* width
);
1853 nfetch
= partial_memory_read (addr
, bufptr
, fetchlen
* width
, &errcode
)
1855 addr
+= nfetch
* width
;
1856 bufptr
+= nfetch
* width
;
1860 unsigned long bufsize
= 0;
1861 unsigned int chunksize
; /* Size of each fetch, in chars. */
1862 int found_nul
; /* Non-zero if we found the nul char. */
1863 gdb_byte
*limit
; /* First location past end of fetch buffer. */
1866 /* We are looking for a NUL terminator to end the fetching, so we
1867 might as well read in blocks that are large enough to be efficient,
1868 but not so large as to be slow if fetchlimit happens to be large.
1869 So we choose the minimum of 8 and fetchlimit. We used to use 200
1870 instead of 8 but 200 is way too big for remote debugging over a
1872 chunksize
= min (8, fetchlimit
);
1877 nfetch
= min (chunksize
, fetchlimit
- bufsize
);
1879 if (*buffer
== NULL
)
1880 *buffer
= (gdb_byte
*) xmalloc (nfetch
* width
);
1882 *buffer
= (gdb_byte
*) xrealloc (*buffer
,
1883 (nfetch
+ bufsize
) * width
);
1885 bufptr
= *buffer
+ bufsize
* width
;
1888 /* Read as much as we can. */
1889 nfetch
= partial_memory_read (addr
, bufptr
, nfetch
* width
, &errcode
)
1892 /* Scan this chunk for the null character that terminates the string
1893 to print. If found, we don't need to fetch any more. Note
1894 that bufptr is explicitly left pointing at the next character
1895 after the null character, or at the next character after the end
1898 limit
= bufptr
+ nfetch
* width
;
1899 while (bufptr
< limit
)
1903 c
= extract_unsigned_integer (bufptr
, width
, byte_order
);
1908 /* We don't care about any error which happened after
1909 the NUL terminator. */
1916 while (errcode
== 0 /* no error */
1917 && bufptr
- *buffer
< fetchlimit
* width
/* no overrun */
1918 && !found_nul
); /* haven't found NUL yet */
1921 { /* Length of string is really 0! */
1922 /* We always allocate *buffer. */
1923 *buffer
= bufptr
= xmalloc (1);
1927 /* bufptr and addr now point immediately beyond the last byte which we
1928 consider part of the string (including a '\0' which ends the string). */
1929 *bytes_read
= bufptr
- *buffer
;
1933 discard_cleanups (old_chain
);
1938 /* Return true if print_wchar can display W without resorting to a
1939 numeric escape, false otherwise. */
1942 wchar_printable (gdb_wchar_t w
)
1944 return (gdb_iswprint (w
)
1945 || w
== LCST ('\a') || w
== LCST ('\b')
1946 || w
== LCST ('\f') || w
== LCST ('\n')
1947 || w
== LCST ('\r') || w
== LCST ('\t')
1948 || w
== LCST ('\v'));
1951 /* A helper function that converts the contents of STRING to wide
1952 characters and then appends them to OUTPUT. */
1955 append_string_as_wide (const char *string
,
1956 struct obstack
*output
)
1958 for (; *string
; ++string
)
1960 gdb_wchar_t w
= gdb_btowc (*string
);
1961 obstack_grow (output
, &w
, sizeof (gdb_wchar_t
));
1965 /* Print a wide character W to OUTPUT. ORIG is a pointer to the
1966 original (target) bytes representing the character, ORIG_LEN is the
1967 number of valid bytes. WIDTH is the number of bytes in a base
1968 characters of the type. OUTPUT is an obstack to which wide
1969 characters are emitted. QUOTER is a (narrow) character indicating
1970 the style of quotes surrounding the character to be printed.
1971 NEED_ESCAPE is an in/out flag which is used to track numeric
1972 escapes across calls. */
1975 print_wchar (gdb_wint_t w
, const gdb_byte
*orig
,
1976 int orig_len
, int width
,
1977 enum bfd_endian byte_order
,
1978 struct obstack
*output
,
1979 int quoter
, int *need_escapep
)
1981 int need_escape
= *need_escapep
;
1985 /* iswprint implementation on Windows returns 1 for tab character.
1986 In order to avoid different printout on this host, we explicitly
1987 use wchar_printable function. */
1991 obstack_grow_wstr (output
, LCST ("\\a"));
1994 obstack_grow_wstr (output
, LCST ("\\b"));
1997 obstack_grow_wstr (output
, LCST ("\\f"));
2000 obstack_grow_wstr (output
, LCST ("\\n"));
2003 obstack_grow_wstr (output
, LCST ("\\r"));
2006 obstack_grow_wstr (output
, LCST ("\\t"));
2009 obstack_grow_wstr (output
, LCST ("\\v"));
2013 if (wchar_printable (w
) && (!need_escape
|| (!gdb_iswdigit (w
)
2015 && w
!= LCST ('9'))))
2017 gdb_wchar_t wchar
= w
;
2019 if (w
== gdb_btowc (quoter
) || w
== LCST ('\\'))
2020 obstack_grow_wstr (output
, LCST ("\\"));
2021 obstack_grow (output
, &wchar
, sizeof (gdb_wchar_t
));
2027 for (i
= 0; i
+ width
<= orig_len
; i
+= width
)
2032 value
= extract_unsigned_integer (&orig
[i
], width
,
2034 /* If the value fits in 3 octal digits, print it that
2035 way. Otherwise, print it as a hex escape. */
2037 xsnprintf (octal
, sizeof (octal
), "\\%.3o",
2038 (int) (value
& 0777));
2040 xsnprintf (octal
, sizeof (octal
), "\\x%lx", (long) value
);
2041 append_string_as_wide (octal
, output
);
2043 /* If we somehow have extra bytes, print them now. */
2044 while (i
< orig_len
)
2048 xsnprintf (octal
, sizeof (octal
), "\\%.3o", orig
[i
] & 0xff);
2049 append_string_as_wide (octal
, output
);
2060 /* Print the character C on STREAM as part of the contents of a
2061 literal string whose delimiter is QUOTER. ENCODING names the
2065 generic_emit_char (int c
, struct type
*type
, struct ui_file
*stream
,
2066 int quoter
, const char *encoding
)
2068 enum bfd_endian byte_order
2069 = gdbarch_byte_order (get_type_arch (type
));
2070 struct obstack wchar_buf
, output
;
2071 struct cleanup
*cleanups
;
2073 struct wchar_iterator
*iter
;
2074 int need_escape
= 0;
2076 buf
= alloca (TYPE_LENGTH (type
));
2077 pack_long (buf
, type
, c
);
2079 iter
= make_wchar_iterator (buf
, TYPE_LENGTH (type
),
2080 encoding
, TYPE_LENGTH (type
));
2081 cleanups
= make_cleanup_wchar_iterator (iter
);
2083 /* This holds the printable form of the wchar_t data. */
2084 obstack_init (&wchar_buf
);
2085 make_cleanup_obstack_free (&wchar_buf
);
2091 const gdb_byte
*buf
;
2093 int print_escape
= 1;
2094 enum wchar_iterate_result result
;
2096 num_chars
= wchar_iterate (iter
, &result
, &chars
, &buf
, &buflen
);
2101 /* If all characters are printable, print them. Otherwise,
2102 we're going to have to print an escape sequence. We
2103 check all characters because we want to print the target
2104 bytes in the escape sequence, and we don't know character
2105 boundaries there. */
2109 for (i
= 0; i
< num_chars
; ++i
)
2110 if (!wchar_printable (chars
[i
]))
2118 for (i
= 0; i
< num_chars
; ++i
)
2119 print_wchar (chars
[i
], buf
, buflen
,
2120 TYPE_LENGTH (type
), byte_order
,
2121 &wchar_buf
, quoter
, &need_escape
);
2125 /* This handles the NUM_CHARS == 0 case as well. */
2127 print_wchar (gdb_WEOF
, buf
, buflen
, TYPE_LENGTH (type
),
2128 byte_order
, &wchar_buf
, quoter
, &need_escape
);
2131 /* The output in the host encoding. */
2132 obstack_init (&output
);
2133 make_cleanup_obstack_free (&output
);
2135 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2136 (gdb_byte
*) obstack_base (&wchar_buf
),
2137 obstack_object_size (&wchar_buf
),
2138 sizeof (gdb_wchar_t
), &output
, translit_char
);
2139 obstack_1grow (&output
, '\0');
2141 fputs_filtered (obstack_base (&output
), stream
);
2143 do_cleanups (cleanups
);
2146 /* Return the repeat count of the next character/byte in ITER,
2147 storing the result in VEC. */
2150 count_next_character (struct wchar_iterator
*iter
,
2151 VEC (converted_character_d
) **vec
)
2153 struct converted_character
*current
;
2155 if (VEC_empty (converted_character_d
, *vec
))
2157 struct converted_character tmp
;
2161 = wchar_iterate (iter
, &tmp
.result
, &chars
, &tmp
.buf
, &tmp
.buflen
);
2162 if (tmp
.num_chars
> 0)
2164 gdb_assert (tmp
.num_chars
< MAX_WCHARS
);
2165 memcpy (tmp
.chars
, chars
, tmp
.num_chars
* sizeof (gdb_wchar_t
));
2167 VEC_safe_push (converted_character_d
, *vec
, &tmp
);
2170 current
= VEC_last (converted_character_d
, *vec
);
2172 /* Count repeated characters or bytes. */
2173 current
->repeat_count
= 1;
2174 if (current
->num_chars
== -1)
2182 struct converted_character d
;
2189 /* Get the next character. */
2191 = wchar_iterate (iter
, &d
.result
, &chars
, &d
.buf
, &d
.buflen
);
2193 /* If a character was successfully converted, save the character
2194 into the converted character. */
2195 if (d
.num_chars
> 0)
2197 gdb_assert (d
.num_chars
< MAX_WCHARS
);
2198 memcpy (d
.chars
, chars
, WCHAR_BUFLEN (d
.num_chars
));
2201 /* Determine if the current character is the same as this
2203 if (d
.num_chars
== current
->num_chars
&& d
.result
== current
->result
)
2205 /* There are two cases to consider:
2207 1) Equality of converted character (num_chars > 0)
2208 2) Equality of non-converted character (num_chars == 0) */
2209 if ((current
->num_chars
> 0
2210 && memcmp (current
->chars
, d
.chars
,
2211 WCHAR_BUFLEN (current
->num_chars
)) == 0)
2212 || (current
->num_chars
== 0
2213 && current
->buflen
== d
.buflen
2214 && memcmp (current
->buf
, d
.buf
, current
->buflen
) == 0))
2215 ++current
->repeat_count
;
2223 /* Push this next converted character onto the result vector. */
2224 repeat
= current
->repeat_count
;
2225 VEC_safe_push (converted_character_d
, *vec
, &d
);
2230 /* Print the characters in CHARS to the OBSTACK. QUOTE_CHAR is the quote
2231 character to use with string output. WIDTH is the size of the output
2232 character type. BYTE_ORDER is the the target byte order. OPTIONS
2233 is the user's print options. */
2236 print_converted_chars_to_obstack (struct obstack
*obstack
,
2237 VEC (converted_character_d
) *chars
,
2238 int quote_char
, int width
,
2239 enum bfd_endian byte_order
,
2240 const struct value_print_options
*options
)
2243 struct converted_character
*elem
;
2244 enum {START
, SINGLE
, REPEAT
, INCOMPLETE
, FINISH
} state
, last
;
2245 gdb_wchar_t wide_quote_char
= gdb_btowc (quote_char
);
2246 int need_escape
= 0;
2248 /* Set the start state. */
2250 last
= state
= START
;
2258 /* Nothing to do. */
2265 /* We are outputting a single character
2266 (< options->repeat_count_threshold). */
2270 /* We were outputting some other type of content, so we
2271 must output and a comma and a quote. */
2273 obstack_grow_wstr (obstack
, LCST (", "));
2274 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2276 /* Output the character. */
2277 for (j
= 0; j
< elem
->repeat_count
; ++j
)
2279 if (elem
->result
== wchar_iterate_ok
)
2280 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2281 byte_order
, obstack
, quote_char
, &need_escape
);
2283 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2284 byte_order
, obstack
, quote_char
, &need_escape
);
2294 /* We are outputting a character with a repeat count
2295 greater than options->repeat_count_threshold. */
2299 /* We were outputting a single string. Terminate the
2301 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2304 obstack_grow_wstr (obstack
, LCST (", "));
2306 /* Output the character and repeat string. */
2307 obstack_grow_wstr (obstack
, LCST ("'"));
2308 if (elem
->result
== wchar_iterate_ok
)
2309 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2310 byte_order
, obstack
, quote_char
, &need_escape
);
2312 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2313 byte_order
, obstack
, quote_char
, &need_escape
);
2314 obstack_grow_wstr (obstack
, LCST ("'"));
2315 s
= xstrprintf (_(" <repeats %u times>"), elem
->repeat_count
);
2316 for (j
= 0; s
[j
]; ++j
)
2318 gdb_wchar_t w
= gdb_btowc (s
[j
]);
2319 obstack_grow (obstack
, &w
, sizeof (gdb_wchar_t
));
2326 /* We are outputting an incomplete sequence. */
2329 /* If we were outputting a string of SINGLE characters,
2330 terminate the quote. */
2331 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2334 obstack_grow_wstr (obstack
, LCST (", "));
2336 /* Output the incomplete sequence string. */
2337 obstack_grow_wstr (obstack
, LCST ("<incomplete sequence "));
2338 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
, byte_order
,
2339 obstack
, 0, &need_escape
);
2340 obstack_grow_wstr (obstack
, LCST (">"));
2342 /* We do not attempt to outupt anything after this. */
2347 /* All done. If we were outputting a string of SINGLE
2348 characters, the string must be terminated. Otherwise,
2349 REPEAT and INCOMPLETE are always left properly terminated. */
2351 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2356 /* Get the next element and state. */
2358 if (state
!= FINISH
)
2360 elem
= VEC_index (converted_character_d
, chars
, idx
++);
2361 switch (elem
->result
)
2363 case wchar_iterate_ok
:
2364 case wchar_iterate_invalid
:
2365 if (elem
->repeat_count
> options
->repeat_count_threshold
)
2371 case wchar_iterate_incomplete
:
2375 case wchar_iterate_eof
:
2383 /* Print the character string STRING, printing at most LENGTH
2384 characters. LENGTH is -1 if the string is nul terminated. TYPE is
2385 the type of each character. OPTIONS holds the printing options;
2386 printing stops early if the number hits print_max; repeat counts
2387 are printed as appropriate. Print ellipses at the end if we had to
2388 stop before printing LENGTH characters, or if FORCE_ELLIPSES.
2389 QUOTE_CHAR is the character to print at each end of the string. If
2390 C_STYLE_TERMINATOR is true, and the last character is 0, then it is
2394 generic_printstr (struct ui_file
*stream
, struct type
*type
,
2395 const gdb_byte
*string
, unsigned int length
,
2396 const char *encoding
, int force_ellipses
,
2397 int quote_char
, int c_style_terminator
,
2398 const struct value_print_options
*options
)
2400 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (type
));
2402 int width
= TYPE_LENGTH (type
);
2403 struct obstack wchar_buf
, output
;
2404 struct cleanup
*cleanup
;
2405 struct wchar_iterator
*iter
;
2407 struct converted_character
*last
;
2408 VEC (converted_character_d
) *converted_chars
;
2412 unsigned long current_char
= 1;
2414 for (i
= 0; current_char
; ++i
)
2417 current_char
= extract_unsigned_integer (string
+ i
* width
,
2423 /* If the string was not truncated due to `set print elements', and
2424 the last byte of it is a null, we don't print that, in
2425 traditional C style. */
2426 if (c_style_terminator
2429 && (extract_unsigned_integer (string
+ (length
- 1) * width
,
2430 width
, byte_order
) == 0))
2435 fputs_filtered ("\"\"", stream
);
2439 /* Arrange to iterate over the characters, in wchar_t form. */
2440 iter
= make_wchar_iterator (string
, length
* width
, encoding
, width
);
2441 cleanup
= make_cleanup_wchar_iterator (iter
);
2442 converted_chars
= NULL
;
2443 make_cleanup (VEC_cleanup (converted_character_d
), &converted_chars
);
2445 /* Convert characters until the string is over or the maximum
2446 number of printed characters has been reached. */
2448 while (i
< options
->print_max
)
2454 /* Grab the next character and repeat count. */
2455 r
= count_next_character (iter
, &converted_chars
);
2457 /* If less than zero, the end of the input string was reached. */
2461 /* Otherwise, add the count to the total print count and get
2462 the next character. */
2466 /* Get the last element and determine if the entire string was
2468 last
= VEC_last (converted_character_d
, converted_chars
);
2469 finished
= (last
->result
== wchar_iterate_eof
);
2471 /* Ensure that CONVERTED_CHARS is terminated. */
2472 last
->result
= wchar_iterate_eof
;
2474 /* WCHAR_BUF is the obstack we use to represent the string in
2476 obstack_init (&wchar_buf
);
2477 make_cleanup_obstack_free (&wchar_buf
);
2479 /* Print the output string to the obstack. */
2480 print_converted_chars_to_obstack (&wchar_buf
, converted_chars
, quote_char
,
2481 width
, byte_order
, options
);
2483 if (force_ellipses
|| !finished
)
2484 obstack_grow_wstr (&wchar_buf
, LCST ("..."));
2486 /* OUTPUT is where we collect `char's for printing. */
2487 obstack_init (&output
);
2488 make_cleanup_obstack_free (&output
);
2490 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2491 (gdb_byte
*) obstack_base (&wchar_buf
),
2492 obstack_object_size (&wchar_buf
),
2493 sizeof (gdb_wchar_t
), &output
, translit_char
);
2494 obstack_1grow (&output
, '\0');
2496 fputs_filtered (obstack_base (&output
), stream
);
2498 do_cleanups (cleanup
);
2501 /* Print a string from the inferior, starting at ADDR and printing up to LEN
2502 characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing
2503 stops at the first null byte, otherwise printing proceeds (including null
2504 bytes) until either print_max or LEN characters have been printed,
2505 whichever is smaller. ENCODING is the name of the string's
2506 encoding. It can be NULL, in which case the target encoding is
2510 val_print_string (struct type
*elttype
, const char *encoding
,
2511 CORE_ADDR addr
, int len
,
2512 struct ui_file
*stream
,
2513 const struct value_print_options
*options
)
2515 int force_ellipsis
= 0; /* Force ellipsis to be printed if nonzero. */
2516 int errcode
; /* Errno returned from bad reads. */
2517 int found_nul
; /* Non-zero if we found the nul char. */
2518 unsigned int fetchlimit
; /* Maximum number of chars to print. */
2520 gdb_byte
*buffer
= NULL
; /* Dynamically growable fetch buffer. */
2521 struct cleanup
*old_chain
= NULL
; /* Top of the old cleanup chain. */
2522 struct gdbarch
*gdbarch
= get_type_arch (elttype
);
2523 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
2524 int width
= TYPE_LENGTH (elttype
);
2526 /* First we need to figure out the limit on the number of characters we are
2527 going to attempt to fetch and print. This is actually pretty simple. If
2528 LEN >= zero, then the limit is the minimum of LEN and print_max. If
2529 LEN is -1, then the limit is print_max. This is true regardless of
2530 whether print_max is zero, UINT_MAX (unlimited), or something in between,
2531 because finding the null byte (or available memory) is what actually
2532 limits the fetch. */
2534 fetchlimit
= (len
== -1 ? options
->print_max
: min (len
,
2535 options
->print_max
));
2537 errcode
= read_string (addr
, len
, width
, fetchlimit
, byte_order
,
2538 &buffer
, &bytes_read
);
2539 old_chain
= make_cleanup (xfree
, buffer
);
2543 /* We now have either successfully filled the buffer to fetchlimit,
2544 or terminated early due to an error or finding a null char when
2547 /* Determine found_nul by looking at the last character read. */
2549 if (bytes_read
>= width
)
2550 found_nul
= extract_unsigned_integer (buffer
+ bytes_read
- width
, width
,
2552 if (len
== -1 && !found_nul
)
2556 /* We didn't find a NUL terminator we were looking for. Attempt
2557 to peek at the next character. If not successful, or it is not
2558 a null byte, then force ellipsis to be printed. */
2560 peekbuf
= (gdb_byte
*) alloca (width
);
2562 if (target_read_memory (addr
, peekbuf
, width
) == 0
2563 && extract_unsigned_integer (peekbuf
, width
, byte_order
) != 0)
2566 else if ((len
>= 0 && errcode
!= 0) || (len
> bytes_read
/ width
))
2568 /* Getting an error when we have a requested length, or fetching less
2569 than the number of characters actually requested, always make us
2574 /* If we get an error before fetching anything, don't print a string.
2575 But if we fetch something and then get an error, print the string
2576 and then the error message. */
2577 if (errcode
== 0 || bytes_read
> 0)
2579 LA_PRINT_STRING (stream
, elttype
, buffer
, bytes_read
/ width
,
2580 encoding
, force_ellipsis
, options
);
2587 str
= memory_error_message (errcode
, gdbarch
, addr
);
2588 make_cleanup (xfree
, str
);
2590 fprintf_filtered (stream
, "<error: ");
2591 fputs_filtered (str
, stream
);
2592 fprintf_filtered (stream
, ">");
2596 do_cleanups (old_chain
);
2598 return (bytes_read
/ width
);
2602 /* The 'set input-radix' command writes to this auxiliary variable.
2603 If the requested radix is valid, INPUT_RADIX is updated; otherwise,
2604 it is left unchanged. */
2606 static unsigned input_radix_1
= 10;
2608 /* Validate an input or output radix setting, and make sure the user
2609 knows what they really did here. Radix setting is confusing, e.g.
2610 setting the input radix to "10" never changes it! */
2613 set_input_radix (char *args
, int from_tty
, struct cmd_list_element
*c
)
2615 set_input_radix_1 (from_tty
, input_radix_1
);
2619 set_input_radix_1 (int from_tty
, unsigned radix
)
2621 /* We don't currently disallow any input radix except 0 or 1, which don't
2622 make any mathematical sense. In theory, we can deal with any input
2623 radix greater than 1, even if we don't have unique digits for every
2624 value from 0 to radix-1, but in practice we lose on large radix values.
2625 We should either fix the lossage or restrict the radix range more.
2630 input_radix_1
= input_radix
;
2631 error (_("Nonsense input radix ``decimal %u''; input radix unchanged."),
2634 input_radix_1
= input_radix
= radix
;
2637 printf_filtered (_("Input radix now set to "
2638 "decimal %u, hex %x, octal %o.\n"),
2639 radix
, radix
, radix
);
2643 /* The 'set output-radix' command writes to this auxiliary variable.
2644 If the requested radix is valid, OUTPUT_RADIX is updated,
2645 otherwise, it is left unchanged. */
2647 static unsigned output_radix_1
= 10;
2650 set_output_radix (char *args
, int from_tty
, struct cmd_list_element
*c
)
2652 set_output_radix_1 (from_tty
, output_radix_1
);
2656 set_output_radix_1 (int from_tty
, unsigned radix
)
2658 /* Validate the radix and disallow ones that we aren't prepared to
2659 handle correctly, leaving the radix unchanged. */
2663 user_print_options
.output_format
= 'x'; /* hex */
2666 user_print_options
.output_format
= 0; /* decimal */
2669 user_print_options
.output_format
= 'o'; /* octal */
2672 output_radix_1
= output_radix
;
2673 error (_("Unsupported output radix ``decimal %u''; "
2674 "output radix unchanged."),
2677 output_radix_1
= output_radix
= radix
;
2680 printf_filtered (_("Output radix now set to "
2681 "decimal %u, hex %x, octal %o.\n"),
2682 radix
, radix
, radix
);
2686 /* Set both the input and output radix at once. Try to set the output radix
2687 first, since it has the most restrictive range. An radix that is valid as
2688 an output radix is also valid as an input radix.
2690 It may be useful to have an unusual input radix. If the user wishes to
2691 set an input radix that is not valid as an output radix, he needs to use
2692 the 'set input-radix' command. */
2695 set_radix (char *arg
, int from_tty
)
2699 radix
= (arg
== NULL
) ? 10 : parse_and_eval_long (arg
);
2700 set_output_radix_1 (0, radix
);
2701 set_input_radix_1 (0, radix
);
2704 printf_filtered (_("Input and output radices now set to "
2705 "decimal %u, hex %x, octal %o.\n"),
2706 radix
, radix
, radix
);
2710 /* Show both the input and output radices. */
2713 show_radix (char *arg
, int from_tty
)
2717 if (input_radix
== output_radix
)
2719 printf_filtered (_("Input and output radices set to "
2720 "decimal %u, hex %x, octal %o.\n"),
2721 input_radix
, input_radix
, input_radix
);
2725 printf_filtered (_("Input radix set to decimal "
2726 "%u, hex %x, octal %o.\n"),
2727 input_radix
, input_radix
, input_radix
);
2728 printf_filtered (_("Output radix set to decimal "
2729 "%u, hex %x, octal %o.\n"),
2730 output_radix
, output_radix
, output_radix
);
2737 set_print (char *arg
, int from_tty
)
2740 "\"set print\" must be followed by the name of a print subcommand.\n");
2741 help_list (setprintlist
, "set print ", all_commands
, gdb_stdout
);
2745 show_print (char *args
, int from_tty
)
2747 cmd_show_list (showprintlist
, from_tty
, "");
2751 set_print_raw (char *arg
, int from_tty
)
2754 "\"set print raw\" must be followed by the name of a \"print raw\" subcommand.\n");
2755 help_list (setprintrawlist
, "set print raw ", all_commands
, gdb_stdout
);
2759 show_print_raw (char *args
, int from_tty
)
2761 cmd_show_list (showprintrawlist
, from_tty
, "");
2766 _initialize_valprint (void)
2768 add_prefix_cmd ("print", no_class
, set_print
,
2769 _("Generic command for setting how things print."),
2770 &setprintlist
, "set print ", 0, &setlist
);
2771 add_alias_cmd ("p", "print", no_class
, 1, &setlist
);
2772 /* Prefer set print to set prompt. */
2773 add_alias_cmd ("pr", "print", no_class
, 1, &setlist
);
2775 add_prefix_cmd ("print", no_class
, show_print
,
2776 _("Generic command for showing print settings."),
2777 &showprintlist
, "show print ", 0, &showlist
);
2778 add_alias_cmd ("p", "print", no_class
, 1, &showlist
);
2779 add_alias_cmd ("pr", "print", no_class
, 1, &showlist
);
2781 add_prefix_cmd ("raw", no_class
, set_print_raw
,
2783 Generic command for setting what things to print in \"raw\" mode."),
2784 &setprintrawlist
, "set print raw ", 0, &setprintlist
);
2785 add_prefix_cmd ("raw", no_class
, show_print_raw
,
2786 _("Generic command for showing \"print raw\" settings."),
2787 &showprintrawlist
, "show print raw ", 0, &showprintlist
);
2789 add_setshow_uinteger_cmd ("elements", no_class
,
2790 &user_print_options
.print_max
, _("\
2791 Set limit on string chars or array elements to print."), _("\
2792 Show limit on string chars or array elements to print."), _("\
2793 \"set print elements unlimited\" causes there to be no limit."),
2796 &setprintlist
, &showprintlist
);
2798 add_setshow_boolean_cmd ("null-stop", no_class
,
2799 &user_print_options
.stop_print_at_null
, _("\
2800 Set printing of char arrays to stop at first null char."), _("\
2801 Show printing of char arrays to stop at first null char."), NULL
,
2803 show_stop_print_at_null
,
2804 &setprintlist
, &showprintlist
);
2806 add_setshow_uinteger_cmd ("repeats", no_class
,
2807 &user_print_options
.repeat_count_threshold
, _("\
2808 Set threshold for repeated print elements."), _("\
2809 Show threshold for repeated print elements."), _("\
2810 \"set print repeats unlimited\" causes all elements to be individually printed."),
2812 show_repeat_count_threshold
,
2813 &setprintlist
, &showprintlist
);
2815 add_setshow_boolean_cmd ("pretty", class_support
,
2816 &user_print_options
.prettyformat_structs
, _("\
2817 Set pretty formatting of structures."), _("\
2818 Show pretty formatting of structures."), NULL
,
2820 show_prettyformat_structs
,
2821 &setprintlist
, &showprintlist
);
2823 add_setshow_boolean_cmd ("union", class_support
,
2824 &user_print_options
.unionprint
, _("\
2825 Set printing of unions interior to structures."), _("\
2826 Show printing of unions interior to structures."), NULL
,
2829 &setprintlist
, &showprintlist
);
2831 add_setshow_boolean_cmd ("array", class_support
,
2832 &user_print_options
.prettyformat_arrays
, _("\
2833 Set pretty formatting of arrays."), _("\
2834 Show pretty formatting of arrays."), NULL
,
2836 show_prettyformat_arrays
,
2837 &setprintlist
, &showprintlist
);
2839 add_setshow_boolean_cmd ("address", class_support
,
2840 &user_print_options
.addressprint
, _("\
2841 Set printing of addresses."), _("\
2842 Show printing of addresses."), NULL
,
2845 &setprintlist
, &showprintlist
);
2847 add_setshow_boolean_cmd ("symbol", class_support
,
2848 &user_print_options
.symbol_print
, _("\
2849 Set printing of symbol names when printing pointers."), _("\
2850 Show printing of symbol names when printing pointers."),
2853 &setprintlist
, &showprintlist
);
2855 add_setshow_zuinteger_cmd ("input-radix", class_support
, &input_radix_1
,
2857 Set default input radix for entering numbers."), _("\
2858 Show default input radix for entering numbers."), NULL
,
2861 &setlist
, &showlist
);
2863 add_setshow_zuinteger_cmd ("output-radix", class_support
, &output_radix_1
,
2865 Set default output radix for printing of values."), _("\
2866 Show default output radix for printing of values."), NULL
,
2869 &setlist
, &showlist
);
2871 /* The "set radix" and "show radix" commands are special in that
2872 they are like normal set and show commands but allow two normally
2873 independent variables to be either set or shown with a single
2874 command. So the usual deprecated_add_set_cmd() and [deleted]
2875 add_show_from_set() commands aren't really appropriate. */
2876 /* FIXME: i18n: With the new add_setshow_integer command, that is no
2877 longer true - show can display anything. */
2878 add_cmd ("radix", class_support
, set_radix
, _("\
2879 Set default input and output number radices.\n\
2880 Use 'set input-radix' or 'set output-radix' to independently set each.\n\
2881 Without an argument, sets both radices back to the default value of 10."),
2883 add_cmd ("radix", class_support
, show_radix
, _("\
2884 Show the default input and output number radices.\n\
2885 Use 'show input-radix' or 'show output-radix' to independently show each."),
2888 add_setshow_boolean_cmd ("array-indexes", class_support
,
2889 &user_print_options
.print_array_indexes
, _("\
2890 Set printing of array indexes."), _("\
2891 Show printing of array indexes"), NULL
, NULL
, show_print_array_indexes
,
2892 &setprintlist
, &showprintlist
);