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 CHECK_TYPEDEF (type
);
278 while (TYPE_CODE (type
) == TYPE_CODE_REF
)
280 type
= TYPE_TARGET_TYPE (type
);
281 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 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 /* A generic val_print that is suitable for use by language
363 implementations of the la_val_print method. This function can
364 handle most type codes, though not all, notably exception
365 TYPE_CODE_UNION and TYPE_CODE_STRUCT, which must be implemented by
368 Most arguments are as to val_print.
370 The additional DECORATIONS argument can be used to customize the
371 output in some small, language-specific ways. */
374 generic_val_print (struct type
*type
, const gdb_byte
*valaddr
,
375 int embedded_offset
, CORE_ADDR address
,
376 struct ui_file
*stream
, int recurse
,
377 const struct value
*original_value
,
378 const struct value_print_options
*options
,
379 const struct generic_val_print_decorations
*decorations
)
381 struct gdbarch
*gdbarch
= get_type_arch (type
);
382 unsigned int i
= 0; /* Number of characters printed. */
384 struct type
*elttype
, *unresolved_elttype
;
385 struct type
*unresolved_type
= type
;
389 CHECK_TYPEDEF (type
);
390 switch (TYPE_CODE (type
))
392 case TYPE_CODE_ARRAY
:
393 unresolved_elttype
= TYPE_TARGET_TYPE (type
);
394 elttype
= check_typedef (unresolved_elttype
);
395 if (TYPE_LENGTH (type
) > 0 && TYPE_LENGTH (unresolved_elttype
) > 0)
397 LONGEST low_bound
, high_bound
;
399 if (!get_array_bounds (type
, &low_bound
, &high_bound
))
400 error (_("Could not determine the array high bound"));
402 if (options
->prettyformat_arrays
)
404 print_spaces_filtered (2 + 2 * recurse
, stream
);
407 fprintf_filtered (stream
, "{");
408 val_print_array_elements (type
, valaddr
, embedded_offset
,
410 recurse
, original_value
, options
, 0);
411 fprintf_filtered (stream
, "}");
414 /* Array of unspecified length: treat like pointer to first
416 addr
= address
+ embedded_offset
;
417 goto print_unpacked_pointer
;
419 case TYPE_CODE_MEMBERPTR
:
420 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
421 original_value
, options
, 0, stream
);
425 if (options
->format
&& options
->format
!= 's')
427 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
428 original_value
, options
, 0, stream
);
431 unresolved_elttype
= TYPE_TARGET_TYPE (type
);
432 elttype
= check_typedef (unresolved_elttype
);
434 addr
= unpack_pointer (type
, valaddr
+ embedded_offset
);
435 print_unpacked_pointer
:
437 if (TYPE_CODE (elttype
) == TYPE_CODE_FUNC
)
439 /* Try to print what function it points to. */
440 print_function_pointer_address (options
, gdbarch
, addr
, stream
);
444 if (options
->symbol_print
)
445 print_address_demangle (options
, gdbarch
, addr
, stream
, demangle
);
446 else if (options
->addressprint
)
447 fputs_filtered (paddress (gdbarch
, addr
), stream
);
452 elttype
= check_typedef (TYPE_TARGET_TYPE (type
));
453 if (options
->addressprint
)
456 = extract_typed_address (valaddr
+ embedded_offset
, type
);
458 fprintf_filtered (stream
, "@");
459 fputs_filtered (paddress (gdbarch
, addr
), stream
);
460 if (options
->deref_ref
)
461 fputs_filtered (": ", stream
);
463 /* De-reference the reference. */
464 if (options
->deref_ref
)
466 if (TYPE_CODE (elttype
) != TYPE_CODE_UNDEF
)
468 struct value
*deref_val
;
470 deref_val
= coerce_ref_if_computed (original_value
);
471 if (deref_val
!= NULL
)
473 /* More complicated computed references are not supported. */
474 gdb_assert (embedded_offset
== 0);
477 deref_val
= value_at (TYPE_TARGET_TYPE (type
),
478 unpack_pointer (type
,
480 + embedded_offset
)));
482 common_val_print (deref_val
, stream
, recurse
, options
,
486 fputs_filtered ("???", stream
);
493 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
494 original_value
, options
, 0, stream
);
497 len
= TYPE_NFIELDS (type
);
498 val
= unpack_long (type
, valaddr
+ embedded_offset
);
499 for (i
= 0; i
< len
; i
++)
502 if (val
== TYPE_FIELD_ENUMVAL (type
, i
))
509 fputs_filtered (TYPE_FIELD_NAME (type
, i
), stream
);
511 else if (TYPE_FLAG_ENUM (type
))
515 /* We have a "flag" enum, so we try to decompose it into
516 pieces as appropriate. A flag enum has disjoint
517 constants by definition. */
518 fputs_filtered ("(", stream
);
519 for (i
= 0; i
< len
; ++i
)
523 if ((val
& TYPE_FIELD_ENUMVAL (type
, i
)) != 0)
526 fputs_filtered (" | ", stream
);
529 val
&= ~TYPE_FIELD_ENUMVAL (type
, i
);
530 fputs_filtered (TYPE_FIELD_NAME (type
, i
), stream
);
534 if (first
|| val
!= 0)
537 fputs_filtered (" | ", stream
);
538 fputs_filtered ("unknown: ", stream
);
539 print_longest (stream
, 'd', 0, val
);
542 fputs_filtered (")", stream
);
545 print_longest (stream
, 'd', 0, val
);
548 case TYPE_CODE_FLAGS
:
550 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
551 original_value
, options
, 0, stream
);
553 val_print_type_code_flags (type
, valaddr
+ embedded_offset
,
558 case TYPE_CODE_METHOD
:
561 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
562 original_value
, options
, 0, stream
);
565 /* FIXME, we should consider, at least for ANSI C language,
566 eliminating the distinction made between FUNCs and POINTERs
568 fprintf_filtered (stream
, "{");
569 type_print (type
, "", stream
, -1);
570 fprintf_filtered (stream
, "} ");
571 /* Try to print what function it points to, and its address. */
572 print_address_demangle (options
, gdbarch
, address
, stream
, demangle
);
576 if (options
->format
|| options
->output_format
)
578 struct value_print_options opts
= *options
;
579 opts
.format
= (options
->format
? options
->format
580 : options
->output_format
);
581 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
582 original_value
, &opts
, 0, stream
);
586 val
= unpack_long (type
, valaddr
+ embedded_offset
);
588 fputs_filtered (decorations
->false_name
, stream
);
590 fputs_filtered (decorations
->true_name
, stream
);
592 print_longest (stream
, 'd', 0, val
);
596 case TYPE_CODE_RANGE
:
597 /* FIXME: create_static_range_type does not set the unsigned bit in a
598 range type (I think it probably should copy it from the
599 target type), so we won't print values which are too large to
600 fit in a signed integer correctly. */
601 /* FIXME: Doesn't handle ranges of enums correctly. (Can't just
602 print with the target type, though, because the size of our
603 type and the target type might differ). */
608 if (options
->format
|| options
->output_format
)
610 struct value_print_options opts
= *options
;
612 opts
.format
= (options
->format
? options
->format
613 : options
->output_format
);
614 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
615 original_value
, &opts
, 0, stream
);
618 val_print_type_code_int (type
, valaddr
+ embedded_offset
, stream
);
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
);
633 val
= unpack_long (type
, valaddr
+ embedded_offset
);
634 if (TYPE_UNSIGNED (type
))
635 fprintf_filtered (stream
, "%u", (unsigned int) val
);
637 fprintf_filtered (stream
, "%d", (int) val
);
638 fputs_filtered (" ", stream
);
639 LA_PRINT_CHAR (val
, unresolved_type
, stream
);
646 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
647 original_value
, options
, 0, stream
);
651 print_floating (valaddr
+ embedded_offset
, type
, stream
);
655 case TYPE_CODE_DECFLOAT
:
657 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
658 original_value
, options
, 0, stream
);
660 print_decimal_floating (valaddr
+ embedded_offset
,
665 fputs_filtered (decorations
->void_name
, stream
);
668 case TYPE_CODE_ERROR
:
669 fprintf_filtered (stream
, "%s", TYPE_ERROR_NAME (type
));
672 case TYPE_CODE_UNDEF
:
673 /* This happens (without TYPE_FLAG_STUB set) on systems which
674 don't use dbx xrefs (NO_DBX_XREFS in gcc) if a file has a
675 "struct foo *bar" and no complete type for struct foo in that
677 fprintf_filtered (stream
, _("<incomplete type>"));
680 case TYPE_CODE_COMPLEX
:
681 fprintf_filtered (stream
, "%s", decorations
->complex_prefix
);
683 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
),
684 valaddr
, embedded_offset
,
685 original_value
, options
, 0, stream
);
687 print_floating (valaddr
+ embedded_offset
,
688 TYPE_TARGET_TYPE (type
),
690 fprintf_filtered (stream
, "%s", decorations
->complex_infix
);
692 val_print_scalar_formatted (TYPE_TARGET_TYPE (type
),
695 + TYPE_LENGTH (TYPE_TARGET_TYPE (type
)),
699 print_floating (valaddr
+ embedded_offset
700 + TYPE_LENGTH (TYPE_TARGET_TYPE (type
)),
701 TYPE_TARGET_TYPE (type
),
703 fprintf_filtered (stream
, "%s", decorations
->complex_suffix
);
706 case TYPE_CODE_UNION
:
707 case TYPE_CODE_STRUCT
:
708 case TYPE_CODE_METHODPTR
:
710 error (_("Unhandled type code %d in symbol table."),
716 /* Print using the given LANGUAGE the data of type TYPE located at
717 VALADDR + EMBEDDED_OFFSET (within GDB), which came from the
718 inferior at address ADDRESS + EMBEDDED_OFFSET, onto stdio stream
719 STREAM according to OPTIONS. VAL is the whole object that came
720 from ADDRESS. VALADDR must point to the head of VAL's contents
723 The language printers will pass down an adjusted EMBEDDED_OFFSET to
724 further helper subroutines as subfields of TYPE are printed. In
725 such cases, VALADDR is passed down unadjusted, as well as VAL, so
726 that VAL can be queried for metadata about the contents data being
727 printed, using EMBEDDED_OFFSET as an offset into VAL's contents
728 buffer. For example: "has this field been optimized out", or "I'm
729 printing an object while inspecting a traceframe; has this
730 particular piece of data been collected?".
732 RECURSE indicates the amount of indentation to supply before
733 continuation lines; this amount is roughly twice the value of
737 val_print (struct type
*type
, const gdb_byte
*valaddr
, int embedded_offset
,
738 CORE_ADDR address
, struct ui_file
*stream
, int recurse
,
739 const struct value
*val
,
740 const struct value_print_options
*options
,
741 const struct language_defn
*language
)
744 struct value_print_options local_opts
= *options
;
745 struct type
*real_type
= check_typedef (type
);
747 if (local_opts
.prettyformat
== Val_prettyformat_default
)
748 local_opts
.prettyformat
= (local_opts
.prettyformat_structs
749 ? Val_prettyformat
: Val_no_prettyformat
);
753 /* Ensure that the type is complete and not just a stub. If the type is
754 only a stub and we can't find and substitute its complete type, then
755 print appropriate string and return. */
757 if (TYPE_STUB (real_type
))
759 fprintf_filtered (stream
, _("<incomplete type>"));
764 if (!valprint_check_validity (stream
, real_type
, embedded_offset
, val
))
769 ret
= apply_ext_lang_val_pretty_printer (type
, valaddr
, embedded_offset
,
770 address
, stream
, recurse
,
771 val
, options
, language
);
776 /* Handle summary mode. If the value is a scalar, print it;
777 otherwise, print an ellipsis. */
778 if (options
->summary
&& !val_print_scalar_type_p (type
))
780 fprintf_filtered (stream
, "...");
786 language
->la_val_print (type
, valaddr
, embedded_offset
, address
,
787 stream
, recurse
, val
,
790 CATCH (except
, RETURN_MASK_ERROR
)
792 fprintf_filtered (stream
, _("<error reading variable>"));
797 /* Check whether the value VAL is printable. Return 1 if it is;
798 return 0 and print an appropriate error message to STREAM according to
799 OPTIONS if it is not. */
802 value_check_printable (struct value
*val
, struct ui_file
*stream
,
803 const struct value_print_options
*options
)
807 fprintf_filtered (stream
, _("<address of value unknown>"));
811 if (value_entirely_optimized_out (val
))
813 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
814 fprintf_filtered (stream
, "...");
816 val_print_optimized_out (val
, stream
);
820 if (value_entirely_unavailable (val
))
822 if (options
->summary
&& !val_print_scalar_type_p (value_type (val
)))
823 fprintf_filtered (stream
, "...");
825 val_print_unavailable (stream
);
829 if (TYPE_CODE (value_type (val
)) == TYPE_CODE_INTERNAL_FUNCTION
)
831 fprintf_filtered (stream
, _("<internal function %s>"),
832 value_internal_function_name (val
));
839 /* Print using the given LANGUAGE the value VAL onto stream STREAM according
842 This is a preferable interface to val_print, above, because it uses
843 GDB's value mechanism. */
846 common_val_print (struct value
*val
, struct ui_file
*stream
, int recurse
,
847 const struct value_print_options
*options
,
848 const struct language_defn
*language
)
850 if (!value_check_printable (val
, stream
, options
))
853 if (language
->la_language
== language_ada
)
854 /* The value might have a dynamic type, which would cause trouble
855 below when trying to extract the value contents (since the value
856 size is determined from the type size which is unknown). So
857 get a fixed representation of our value. */
858 val
= ada_to_fixed_value (val
);
860 val_print (value_type (val
), value_contents_for_printing (val
),
861 value_embedded_offset (val
), value_address (val
),
863 val
, options
, language
);
866 /* Print on stream STREAM the value VAL according to OPTIONS. The value
867 is printed using the current_language syntax. */
870 value_print (struct value
*val
, struct ui_file
*stream
,
871 const struct value_print_options
*options
)
873 if (!value_check_printable (val
, stream
, options
))
879 = apply_ext_lang_val_pretty_printer (value_type (val
),
880 value_contents_for_printing (val
),
881 value_embedded_offset (val
),
884 val
, options
, current_language
);
890 LA_VALUE_PRINT (val
, stream
, options
);
893 /* Called by various <lang>_val_print routines to print
894 TYPE_CODE_INT's. TYPE is the type. VALADDR is the address of the
895 value. STREAM is where to print the value. */
898 val_print_type_code_int (struct type
*type
, const gdb_byte
*valaddr
,
899 struct ui_file
*stream
)
901 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (type
));
903 if (TYPE_LENGTH (type
) > sizeof (LONGEST
))
907 if (TYPE_UNSIGNED (type
)
908 && extract_long_unsigned_integer (valaddr
, TYPE_LENGTH (type
),
911 print_longest (stream
, 'u', 0, val
);
915 /* Signed, or we couldn't turn an unsigned value into a
916 LONGEST. For signed values, one could assume two's
917 complement (a reasonable assumption, I think) and do
919 print_hex_chars (stream
, (unsigned char *) valaddr
,
920 TYPE_LENGTH (type
), byte_order
);
925 print_longest (stream
, TYPE_UNSIGNED (type
) ? 'u' : 'd', 0,
926 unpack_long (type
, valaddr
));
931 val_print_type_code_flags (struct type
*type
, const gdb_byte
*valaddr
,
932 struct ui_file
*stream
)
934 ULONGEST val
= unpack_long (type
, valaddr
);
935 int bitpos
, nfields
= TYPE_NFIELDS (type
);
937 fputs_filtered ("[ ", stream
);
938 for (bitpos
= 0; bitpos
< nfields
; bitpos
++)
940 if (TYPE_FIELD_BITPOS (type
, bitpos
) != -1
941 && (val
& ((ULONGEST
)1 << bitpos
)))
943 if (TYPE_FIELD_NAME (type
, bitpos
))
944 fprintf_filtered (stream
, "%s ", TYPE_FIELD_NAME (type
, bitpos
));
946 fprintf_filtered (stream
, "#%d ", bitpos
);
949 fputs_filtered ("]", stream
);
952 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
953 according to OPTIONS and SIZE on STREAM. Format i is not supported
956 This is how the elements of an array or structure are printed
960 val_print_scalar_formatted (struct type
*type
,
961 const gdb_byte
*valaddr
, int embedded_offset
,
962 const struct value
*val
,
963 const struct value_print_options
*options
,
965 struct ui_file
*stream
)
967 gdb_assert (val
!= NULL
);
968 gdb_assert (valaddr
== value_contents_for_printing_const (val
));
970 /* If we get here with a string format, try again without it. Go
971 all the way back to the language printers, which may call us
973 if (options
->format
== 's')
975 struct value_print_options opts
= *options
;
978 val_print (type
, valaddr
, embedded_offset
, 0, stream
, 0, val
, &opts
,
983 /* A scalar object that does not have all bits available can't be
984 printed, because all bits contribute to its representation. */
985 if (value_bits_any_optimized_out (val
,
986 TARGET_CHAR_BIT
* embedded_offset
,
987 TARGET_CHAR_BIT
* TYPE_LENGTH (type
)))
988 val_print_optimized_out (val
, stream
);
989 else if (!value_bytes_available (val
, embedded_offset
, TYPE_LENGTH (type
)))
990 val_print_unavailable (stream
);
992 print_scalar_formatted (valaddr
+ embedded_offset
, type
,
993 options
, size
, stream
);
996 /* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g.
997 The raison d'etre of this function is to consolidate printing of
998 LONG_LONG's into this one function. The format chars b,h,w,g are
999 from print_scalar_formatted(). Numbers are printed using C
1002 USE_C_FORMAT means to use C format in all cases. Without it,
1003 'o' and 'x' format do not include the standard C radix prefix
1006 Hilfinger/2004-09-09: USE_C_FORMAT was originally called USE_LOCAL
1007 and was intended to request formating according to the current
1008 language and would be used for most integers that GDB prints. The
1009 exceptional cases were things like protocols where the format of
1010 the integer is a protocol thing, not a user-visible thing). The
1011 parameter remains to preserve the information of what things might
1012 be printed with language-specific format, should we ever resurrect
1016 print_longest (struct ui_file
*stream
, int format
, int use_c_format
,
1024 val
= int_string (val_long
, 10, 1, 0, 1); break;
1026 val
= int_string (val_long
, 10, 0, 0, 1); break;
1028 val
= int_string (val_long
, 16, 0, 0, use_c_format
); break;
1030 val
= int_string (val_long
, 16, 0, 2, 1); break;
1032 val
= int_string (val_long
, 16, 0, 4, 1); break;
1034 val
= int_string (val_long
, 16, 0, 8, 1); break;
1036 val
= int_string (val_long
, 16, 0, 16, 1); break;
1039 val
= int_string (val_long
, 8, 0, 0, use_c_format
); break;
1041 internal_error (__FILE__
, __LINE__
,
1042 _("failed internal consistency check"));
1044 fputs_filtered (val
, stream
);
1047 /* This used to be a macro, but I don't think it is called often enough
1048 to merit such treatment. */
1049 /* Convert a LONGEST to an int. This is used in contexts (e.g. number of
1050 arguments to a function, number in a value history, register number, etc.)
1051 where the value must not be larger than can fit in an int. */
1054 longest_to_int (LONGEST arg
)
1056 /* Let the compiler do the work. */
1057 int rtnval
= (int) arg
;
1059 /* Check for overflows or underflows. */
1060 if (sizeof (LONGEST
) > sizeof (int))
1064 error (_("Value out of range."));
1070 /* Print a floating point value of type TYPE (not always a
1071 TYPE_CODE_FLT), pointed to in GDB by VALADDR, on STREAM. */
1074 print_floating (const gdb_byte
*valaddr
, struct type
*type
,
1075 struct ui_file
*stream
)
1079 const struct floatformat
*fmt
= NULL
;
1080 unsigned len
= TYPE_LENGTH (type
);
1081 enum float_kind kind
;
1083 /* If it is a floating-point, check for obvious problems. */
1084 if (TYPE_CODE (type
) == TYPE_CODE_FLT
)
1085 fmt
= floatformat_from_type (type
);
1088 kind
= floatformat_classify (fmt
, valaddr
);
1089 if (kind
== float_nan
)
1091 if (floatformat_is_negative (fmt
, valaddr
))
1092 fprintf_filtered (stream
, "-");
1093 fprintf_filtered (stream
, "nan(");
1094 fputs_filtered ("0x", stream
);
1095 fputs_filtered (floatformat_mantissa (fmt
, valaddr
), stream
);
1096 fprintf_filtered (stream
, ")");
1099 else if (kind
== float_infinite
)
1101 if (floatformat_is_negative (fmt
, valaddr
))
1102 fputs_filtered ("-", stream
);
1103 fputs_filtered ("inf", stream
);
1108 /* NOTE: cagney/2002-01-15: The TYPE passed into print_floating()
1109 isn't necessarily a TYPE_CODE_FLT. Consequently, unpack_double
1110 needs to be used as that takes care of any necessary type
1111 conversions. Such conversions are of course direct to DOUBLEST
1112 and disregard any possible target floating point limitations.
1113 For instance, a u64 would be converted and displayed exactly on a
1114 host with 80 bit DOUBLEST but with loss of information on a host
1115 with 64 bit DOUBLEST. */
1117 doub
= unpack_double (type
, valaddr
, &inv
);
1120 fprintf_filtered (stream
, "<invalid float value>");
1124 /* FIXME: kettenis/2001-01-20: The following code makes too much
1125 assumptions about the host and target floating point format. */
1127 /* NOTE: cagney/2002-02-03: Since the TYPE of what was passed in may
1128 not necessarily be a TYPE_CODE_FLT, the below ignores that and
1129 instead uses the type's length to determine the precision of the
1130 floating-point value being printed. */
1132 if (len
< sizeof (double))
1133 fprintf_filtered (stream
, "%.9g", (double) doub
);
1134 else if (len
== sizeof (double))
1135 fprintf_filtered (stream
, "%.17g", (double) doub
);
1137 #ifdef PRINTF_HAS_LONG_DOUBLE
1138 fprintf_filtered (stream
, "%.35Lg", doub
);
1140 /* This at least wins with values that are representable as
1142 fprintf_filtered (stream
, "%.17g", (double) doub
);
1147 print_decimal_floating (const gdb_byte
*valaddr
, struct type
*type
,
1148 struct ui_file
*stream
)
1150 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (type
));
1151 char decstr
[MAX_DECIMAL_STRING
];
1152 unsigned len
= TYPE_LENGTH (type
);
1154 decimal_to_string (valaddr
, len
, byte_order
, decstr
);
1155 fputs_filtered (decstr
, stream
);
1160 print_binary_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1161 unsigned len
, enum bfd_endian byte_order
)
1164 #define BITS_IN_BYTES 8
1170 /* Declared "int" so it will be signed.
1171 This ensures that right shift will shift in zeros. */
1173 const int mask
= 0x080;
1175 /* FIXME: We should be not printing leading zeroes in most cases. */
1177 if (byte_order
== BFD_ENDIAN_BIG
)
1183 /* Every byte has 8 binary characters; peel off
1184 and print from the MSB end. */
1186 for (i
= 0; i
< (BITS_IN_BYTES
* sizeof (*p
)); i
++)
1188 if (*p
& (mask
>> i
))
1193 fprintf_filtered (stream
, "%1d", b
);
1199 for (p
= valaddr
+ len
- 1;
1203 for (i
= 0; i
< (BITS_IN_BYTES
* sizeof (*p
)); i
++)
1205 if (*p
& (mask
>> i
))
1210 fprintf_filtered (stream
, "%1d", b
);
1216 /* VALADDR points to an integer of LEN bytes.
1217 Print it in octal on stream or format it in buf. */
1220 print_octal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1221 unsigned len
, enum bfd_endian byte_order
)
1224 unsigned char octa1
, octa2
, octa3
, carry
;
1227 /* FIXME: We should be not printing leading zeroes in most cases. */
1230 /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track
1231 * the extra bits, which cycle every three bytes:
1233 * Byte side: 0 1 2 3
1235 * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 |
1237 * Octal side: 0 1 carry 3 4 carry ...
1239 * Cycle number: 0 1 2
1241 * But of course we are printing from the high side, so we have to
1242 * figure out where in the cycle we are so that we end up with no
1243 * left over bits at the end.
1245 #define BITS_IN_OCTAL 3
1246 #define HIGH_ZERO 0340
1247 #define LOW_ZERO 0016
1248 #define CARRY_ZERO 0003
1249 #define HIGH_ONE 0200
1250 #define MID_ONE 0160
1251 #define LOW_ONE 0016
1252 #define CARRY_ONE 0001
1253 #define HIGH_TWO 0300
1254 #define MID_TWO 0070
1255 #define LOW_TWO 0007
1257 /* For 32 we start in cycle 2, with two bits and one bit carry;
1258 for 64 in cycle in cycle 1, with one bit and a two bit carry. */
1260 cycle
= (len
* BITS_IN_BYTES
) % BITS_IN_OCTAL
;
1263 fputs_filtered ("0", stream
);
1264 if (byte_order
== BFD_ENDIAN_BIG
)
1273 /* No carry in, carry out two bits. */
1275 octa1
= (HIGH_ZERO
& *p
) >> 5;
1276 octa2
= (LOW_ZERO
& *p
) >> 2;
1277 carry
= (CARRY_ZERO
& *p
);
1278 fprintf_filtered (stream
, "%o", octa1
);
1279 fprintf_filtered (stream
, "%o", octa2
);
1283 /* Carry in two bits, carry out one bit. */
1285 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1286 octa2
= (MID_ONE
& *p
) >> 4;
1287 octa3
= (LOW_ONE
& *p
) >> 1;
1288 carry
= (CARRY_ONE
& *p
);
1289 fprintf_filtered (stream
, "%o", octa1
);
1290 fprintf_filtered (stream
, "%o", octa2
);
1291 fprintf_filtered (stream
, "%o", octa3
);
1295 /* Carry in one bit, no carry out. */
1297 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1298 octa2
= (MID_TWO
& *p
) >> 3;
1299 octa3
= (LOW_TWO
& *p
);
1301 fprintf_filtered (stream
, "%o", octa1
);
1302 fprintf_filtered (stream
, "%o", octa2
);
1303 fprintf_filtered (stream
, "%o", octa3
);
1307 error (_("Internal error in octal conversion;"));
1311 cycle
= cycle
% BITS_IN_OCTAL
;
1316 for (p
= valaddr
+ len
- 1;
1323 /* Carry out, no carry in */
1325 octa1
= (HIGH_ZERO
& *p
) >> 5;
1326 octa2
= (LOW_ZERO
& *p
) >> 2;
1327 carry
= (CARRY_ZERO
& *p
);
1328 fprintf_filtered (stream
, "%o", octa1
);
1329 fprintf_filtered (stream
, "%o", octa2
);
1333 /* Carry in, carry out */
1335 octa1
= (carry
<< 1) | ((HIGH_ONE
& *p
) >> 7);
1336 octa2
= (MID_ONE
& *p
) >> 4;
1337 octa3
= (LOW_ONE
& *p
) >> 1;
1338 carry
= (CARRY_ONE
& *p
);
1339 fprintf_filtered (stream
, "%o", octa1
);
1340 fprintf_filtered (stream
, "%o", octa2
);
1341 fprintf_filtered (stream
, "%o", octa3
);
1345 /* Carry in, no carry out */
1347 octa1
= (carry
<< 2) | ((HIGH_TWO
& *p
) >> 6);
1348 octa2
= (MID_TWO
& *p
) >> 3;
1349 octa3
= (LOW_TWO
& *p
);
1351 fprintf_filtered (stream
, "%o", octa1
);
1352 fprintf_filtered (stream
, "%o", octa2
);
1353 fprintf_filtered (stream
, "%o", octa3
);
1357 error (_("Internal error in octal conversion;"));
1361 cycle
= cycle
% BITS_IN_OCTAL
;
1367 /* VALADDR points to an integer of LEN bytes.
1368 Print it in decimal on stream or format it in buf. */
1371 print_decimal_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1372 unsigned len
, enum bfd_endian byte_order
)
1375 #define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */
1376 #define CARRY_LEFT( x ) ((x) % TEN)
1377 #define SHIFT( x ) ((x) << 4)
1378 #define LOW_NIBBLE( x ) ( (x) & 0x00F)
1379 #define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4)
1382 unsigned char *digits
;
1385 int i
, j
, decimal_digits
;
1389 /* Base-ten number is less than twice as many digits
1390 as the base 16 number, which is 2 digits per byte. */
1392 decimal_len
= len
* 2 * 2;
1393 digits
= xmalloc (decimal_len
);
1395 for (i
= 0; i
< decimal_len
; i
++)
1400 /* Ok, we have an unknown number of bytes of data to be printed in
1403 * Given a hex number (in nibbles) as XYZ, we start by taking X and
1404 * decemalizing it as "x1 x2" in two decimal nibbles. Then we multiply
1405 * the nibbles by 16, add Y and re-decimalize. Repeat with Z.
1407 * The trick is that "digits" holds a base-10 number, but sometimes
1408 * the individual digits are > 10.
1410 * Outer loop is per nibble (hex digit) of input, from MSD end to
1413 decimal_digits
= 0; /* Number of decimal digits so far */
1414 p
= (byte_order
== BFD_ENDIAN_BIG
) ? valaddr
: valaddr
+ len
- 1;
1416 while ((byte_order
== BFD_ENDIAN_BIG
) ? (p
< valaddr
+ len
) : (p
>= valaddr
))
1419 * Multiply current base-ten number by 16 in place.
1420 * Each digit was between 0 and 9, now is between
1423 for (j
= 0; j
< decimal_digits
; j
++)
1425 digits
[j
] = SHIFT (digits
[j
]);
1428 /* Take the next nibble off the input and add it to what
1429 * we've got in the LSB position. Bottom 'digit' is now
1430 * between 0 and 159.
1432 * "flip" is used to run this loop twice for each byte.
1436 /* Take top nibble. */
1438 digits
[0] += HIGH_NIBBLE (*p
);
1443 /* Take low nibble and bump our pointer "p". */
1445 digits
[0] += LOW_NIBBLE (*p
);
1446 if (byte_order
== BFD_ENDIAN_BIG
)
1453 /* Re-decimalize. We have to do this often enough
1454 * that we don't overflow, but once per nibble is
1455 * overkill. Easier this way, though. Note that the
1456 * carry is often larger than 10 (e.g. max initial
1457 * carry out of lowest nibble is 15, could bubble all
1458 * the way up greater than 10). So we have to do
1459 * the carrying beyond the last current digit.
1462 for (j
= 0; j
< decimal_len
- 1; j
++)
1466 /* "/" won't handle an unsigned char with
1467 * a value that if signed would be negative.
1468 * So extend to longword int via "dummy".
1471 carry
= CARRY_OUT (dummy
);
1472 digits
[j
] = CARRY_LEFT (dummy
);
1474 if (j
>= decimal_digits
&& carry
== 0)
1477 * All higher digits are 0 and we
1478 * no longer have a carry.
1480 * Note: "j" is 0-based, "decimal_digits" is
1483 decimal_digits
= j
+ 1;
1489 /* Ok, now "digits" is the decimal representation, with
1490 the "decimal_digits" actual digits. Print! */
1492 for (i
= decimal_digits
- 1; i
>= 0; i
--)
1494 fprintf_filtered (stream
, "%1d", digits
[i
]);
1499 /* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */
1502 print_hex_chars (struct ui_file
*stream
, const gdb_byte
*valaddr
,
1503 unsigned len
, enum bfd_endian byte_order
)
1507 /* FIXME: We should be not printing leading zeroes in most cases. */
1509 fputs_filtered ("0x", stream
);
1510 if (byte_order
== BFD_ENDIAN_BIG
)
1516 fprintf_filtered (stream
, "%02x", *p
);
1521 for (p
= valaddr
+ len
- 1;
1525 fprintf_filtered (stream
, "%02x", *p
);
1530 /* VALADDR points to a char integer of LEN bytes.
1531 Print it out in appropriate language form on stream.
1532 Omit any leading zero chars. */
1535 print_char_chars (struct ui_file
*stream
, struct type
*type
,
1536 const gdb_byte
*valaddr
,
1537 unsigned len
, enum bfd_endian byte_order
)
1541 if (byte_order
== BFD_ENDIAN_BIG
)
1544 while (p
< valaddr
+ len
- 1 && *p
== 0)
1547 while (p
< valaddr
+ len
)
1549 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
1555 p
= valaddr
+ len
- 1;
1556 while (p
> valaddr
&& *p
== 0)
1559 while (p
>= valaddr
)
1561 LA_EMIT_CHAR (*p
, type
, stream
, '\'');
1567 /* Print function pointer with inferior address ADDRESS onto stdio
1571 print_function_pointer_address (const struct value_print_options
*options
,
1572 struct gdbarch
*gdbarch
,
1574 struct ui_file
*stream
)
1577 = gdbarch_convert_from_func_ptr_addr (gdbarch
, address
,
1580 /* If the function pointer is represented by a description, print
1581 the address of the description. */
1582 if (options
->addressprint
&& func_addr
!= address
)
1584 fputs_filtered ("@", stream
);
1585 fputs_filtered (paddress (gdbarch
, address
), stream
);
1586 fputs_filtered (": ", stream
);
1588 print_address_demangle (options
, gdbarch
, func_addr
, stream
, demangle
);
1592 /* Print on STREAM using the given OPTIONS the index for the element
1593 at INDEX of an array whose index type is INDEX_TYPE. */
1596 maybe_print_array_index (struct type
*index_type
, LONGEST index
,
1597 struct ui_file
*stream
,
1598 const struct value_print_options
*options
)
1600 struct value
*index_value
;
1602 if (!options
->print_array_indexes
)
1605 index_value
= value_from_longest (index_type
, index
);
1607 LA_PRINT_ARRAY_INDEX (index_value
, stream
, options
);
1610 /* Called by various <lang>_val_print routines to print elements of an
1611 array in the form "<elem1>, <elem2>, <elem3>, ...".
1613 (FIXME?) Assumes array element separator is a comma, which is correct
1614 for all languages currently handled.
1615 (FIXME?) Some languages have a notation for repeated array elements,
1616 perhaps we should try to use that notation when appropriate. */
1619 val_print_array_elements (struct type
*type
,
1620 const gdb_byte
*valaddr
, int embedded_offset
,
1621 CORE_ADDR address
, struct ui_file
*stream
,
1623 const struct value
*val
,
1624 const struct value_print_options
*options
,
1627 unsigned int things_printed
= 0;
1629 struct type
*elttype
, *index_type
, *base_index_type
;
1631 /* Position of the array element we are examining to see
1632 whether it is repeated. */
1634 /* Number of repetitions we have detected so far. */
1636 LONGEST low_bound
, high_bound
;
1637 LONGEST low_pos
, high_pos
;
1639 elttype
= TYPE_TARGET_TYPE (type
);
1640 eltlen
= TYPE_LENGTH (check_typedef (elttype
));
1641 index_type
= TYPE_INDEX_TYPE (type
);
1643 if (get_array_bounds (type
, &low_bound
, &high_bound
))
1645 if (TYPE_CODE (index_type
) == TYPE_CODE_RANGE
)
1646 base_index_type
= TYPE_TARGET_TYPE (index_type
);
1648 base_index_type
= index_type
;
1650 /* Non-contiguous enumerations types can by used as index types
1651 in some languages (e.g. Ada). In this case, the array length
1652 shall be computed from the positions of the first and last
1653 literal in the enumeration type, and not from the values
1654 of these literals. */
1655 if (!discrete_position (base_index_type
, low_bound
, &low_pos
)
1656 || !discrete_position (base_index_type
, high_bound
, &high_pos
))
1658 warning (_("unable to get positions in array, use bounds instead"));
1659 low_pos
= low_bound
;
1660 high_pos
= high_bound
;
1663 /* The array length should normally be HIGH_POS - LOW_POS + 1.
1664 But we have to be a little extra careful, because some languages
1665 such as Ada allow LOW_POS to be greater than HIGH_POS for
1666 empty arrays. In that situation, the array length is just zero,
1668 if (low_pos
> high_pos
)
1671 len
= high_pos
- low_pos
+ 1;
1675 warning (_("unable to get bounds of array, assuming null array"));
1680 annotate_array_section_begin (i
, elttype
);
1682 for (; i
< len
&& things_printed
< options
->print_max
; i
++)
1686 if (options
->prettyformat_arrays
)
1688 fprintf_filtered (stream
, ",\n");
1689 print_spaces_filtered (2 + 2 * recurse
, stream
);
1693 fprintf_filtered (stream
, ", ");
1696 wrap_here (n_spaces (2 + 2 * recurse
));
1697 maybe_print_array_index (index_type
, i
+ low_bound
,
1702 /* Only check for reps if repeat_count_threshold is not set to
1703 UINT_MAX (unlimited). */
1704 if (options
->repeat_count_threshold
< UINT_MAX
)
1707 && value_contents_eq (val
,
1708 embedded_offset
+ i
* eltlen
,
1719 if (reps
> options
->repeat_count_threshold
)
1721 val_print (elttype
, valaddr
, embedded_offset
+ i
* eltlen
,
1722 address
, stream
, recurse
+ 1, val
, options
,
1724 annotate_elt_rep (reps
);
1725 fprintf_filtered (stream
, " <repeats %u times>", reps
);
1726 annotate_elt_rep_end ();
1729 things_printed
+= options
->repeat_count_threshold
;
1733 val_print (elttype
, valaddr
, embedded_offset
+ i
* eltlen
,
1735 stream
, recurse
+ 1, val
, options
, current_language
);
1740 annotate_array_section_end ();
1743 fprintf_filtered (stream
, "...");
1747 /* Read LEN bytes of target memory at address MEMADDR, placing the
1748 results in GDB's memory at MYADDR. Returns a count of the bytes
1749 actually read, and optionally a target_xfer_status value in the
1750 location pointed to by ERRPTR if ERRPTR is non-null. */
1752 /* FIXME: cagney/1999-10-14: Only used by val_print_string. Can this
1753 function be eliminated. */
1756 partial_memory_read (CORE_ADDR memaddr
, gdb_byte
*myaddr
,
1757 int len
, int *errptr
)
1759 int nread
; /* Number of bytes actually read. */
1760 int errcode
; /* Error from last read. */
1762 /* First try a complete read. */
1763 errcode
= target_read_memory (memaddr
, myaddr
, len
);
1771 /* Loop, reading one byte at a time until we get as much as we can. */
1772 for (errcode
= 0, nread
= 0; len
> 0 && errcode
== 0; nread
++, len
--)
1774 errcode
= target_read_memory (memaddr
++, myaddr
++, 1);
1776 /* If an error, the last read was unsuccessful, so adjust count. */
1789 /* Read a string from the inferior, at ADDR, with LEN characters of WIDTH bytes
1790 each. Fetch at most FETCHLIMIT characters. BUFFER will be set to a newly
1791 allocated buffer containing the string, which the caller is responsible to
1792 free, and BYTES_READ will be set to the number of bytes read. Returns 0 on
1793 success, or a target_xfer_status on failure.
1795 If LEN > 0, reads the lesser of LEN or FETCHLIMIT characters
1796 (including eventual NULs in the middle or end of the string).
1798 If LEN is -1, stops at the first null character (not necessarily
1799 the first null byte) up to a maximum of FETCHLIMIT characters. Set
1800 FETCHLIMIT to UINT_MAX to read as many characters as possible from
1803 Unless an exception is thrown, BUFFER will always be allocated, even on
1804 failure. In this case, some characters might have been read before the
1805 failure happened. Check BYTES_READ to recognize this situation.
1807 Note: There was a FIXME asking to make this code use target_read_string,
1808 but this function is more general (can read past null characters, up to
1809 given LEN). Besides, it is used much more often than target_read_string
1810 so it is more tested. Perhaps callers of target_read_string should use
1811 this function instead? */
1814 read_string (CORE_ADDR addr
, int len
, int width
, unsigned int fetchlimit
,
1815 enum bfd_endian byte_order
, gdb_byte
**buffer
, int *bytes_read
)
1817 int errcode
; /* Errno returned from bad reads. */
1818 unsigned int nfetch
; /* Chars to fetch / chars fetched. */
1819 gdb_byte
*bufptr
; /* Pointer to next available byte in
1821 struct cleanup
*old_chain
= NULL
; /* Top of the old cleanup chain. */
1823 /* Loop until we either have all the characters, or we encounter
1824 some error, such as bumping into the end of the address space. */
1828 old_chain
= make_cleanup (free_current_contents
, buffer
);
1832 /* We want fetchlimit chars, so we might as well read them all in
1834 unsigned int fetchlen
= min (len
, fetchlimit
);
1836 *buffer
= (gdb_byte
*) xmalloc (fetchlen
* width
);
1839 nfetch
= partial_memory_read (addr
, bufptr
, fetchlen
* width
, &errcode
)
1841 addr
+= nfetch
* width
;
1842 bufptr
+= nfetch
* width
;
1846 unsigned long bufsize
= 0;
1847 unsigned int chunksize
; /* Size of each fetch, in chars. */
1848 int found_nul
; /* Non-zero if we found the nul char. */
1849 gdb_byte
*limit
; /* First location past end of fetch buffer. */
1852 /* We are looking for a NUL terminator to end the fetching, so we
1853 might as well read in blocks that are large enough to be efficient,
1854 but not so large as to be slow if fetchlimit happens to be large.
1855 So we choose the minimum of 8 and fetchlimit. We used to use 200
1856 instead of 8 but 200 is way too big for remote debugging over a
1858 chunksize
= min (8, fetchlimit
);
1863 nfetch
= min (chunksize
, fetchlimit
- bufsize
);
1865 if (*buffer
== NULL
)
1866 *buffer
= (gdb_byte
*) xmalloc (nfetch
* width
);
1868 *buffer
= (gdb_byte
*) xrealloc (*buffer
,
1869 (nfetch
+ bufsize
) * width
);
1871 bufptr
= *buffer
+ bufsize
* width
;
1874 /* Read as much as we can. */
1875 nfetch
= partial_memory_read (addr
, bufptr
, nfetch
* width
, &errcode
)
1878 /* Scan this chunk for the null character that terminates the string
1879 to print. If found, we don't need to fetch any more. Note
1880 that bufptr is explicitly left pointing at the next character
1881 after the null character, or at the next character after the end
1884 limit
= bufptr
+ nfetch
* width
;
1885 while (bufptr
< limit
)
1889 c
= extract_unsigned_integer (bufptr
, width
, byte_order
);
1894 /* We don't care about any error which happened after
1895 the NUL terminator. */
1902 while (errcode
== 0 /* no error */
1903 && bufptr
- *buffer
< fetchlimit
* width
/* no overrun */
1904 && !found_nul
); /* haven't found NUL yet */
1907 { /* Length of string is really 0! */
1908 /* We always allocate *buffer. */
1909 *buffer
= bufptr
= xmalloc (1);
1913 /* bufptr and addr now point immediately beyond the last byte which we
1914 consider part of the string (including a '\0' which ends the string). */
1915 *bytes_read
= bufptr
- *buffer
;
1919 discard_cleanups (old_chain
);
1924 /* Return true if print_wchar can display W without resorting to a
1925 numeric escape, false otherwise. */
1928 wchar_printable (gdb_wchar_t w
)
1930 return (gdb_iswprint (w
)
1931 || w
== LCST ('\a') || w
== LCST ('\b')
1932 || w
== LCST ('\f') || w
== LCST ('\n')
1933 || w
== LCST ('\r') || w
== LCST ('\t')
1934 || w
== LCST ('\v'));
1937 /* A helper function that converts the contents of STRING to wide
1938 characters and then appends them to OUTPUT. */
1941 append_string_as_wide (const char *string
,
1942 struct obstack
*output
)
1944 for (; *string
; ++string
)
1946 gdb_wchar_t w
= gdb_btowc (*string
);
1947 obstack_grow (output
, &w
, sizeof (gdb_wchar_t
));
1951 /* Print a wide character W to OUTPUT. ORIG is a pointer to the
1952 original (target) bytes representing the character, ORIG_LEN is the
1953 number of valid bytes. WIDTH is the number of bytes in a base
1954 characters of the type. OUTPUT is an obstack to which wide
1955 characters are emitted. QUOTER is a (narrow) character indicating
1956 the style of quotes surrounding the character to be printed.
1957 NEED_ESCAPE is an in/out flag which is used to track numeric
1958 escapes across calls. */
1961 print_wchar (gdb_wint_t w
, const gdb_byte
*orig
,
1962 int orig_len
, int width
,
1963 enum bfd_endian byte_order
,
1964 struct obstack
*output
,
1965 int quoter
, int *need_escapep
)
1967 int need_escape
= *need_escapep
;
1971 /* iswprint implementation on Windows returns 1 for tab character.
1972 In order to avoid different printout on this host, we explicitly
1973 use wchar_printable function. */
1977 obstack_grow_wstr (output
, LCST ("\\a"));
1980 obstack_grow_wstr (output
, LCST ("\\b"));
1983 obstack_grow_wstr (output
, LCST ("\\f"));
1986 obstack_grow_wstr (output
, LCST ("\\n"));
1989 obstack_grow_wstr (output
, LCST ("\\r"));
1992 obstack_grow_wstr (output
, LCST ("\\t"));
1995 obstack_grow_wstr (output
, LCST ("\\v"));
1999 if (wchar_printable (w
) && (!need_escape
|| (!gdb_iswdigit (w
)
2001 && w
!= LCST ('9'))))
2003 gdb_wchar_t wchar
= w
;
2005 if (w
== gdb_btowc (quoter
) || w
== LCST ('\\'))
2006 obstack_grow_wstr (output
, LCST ("\\"));
2007 obstack_grow (output
, &wchar
, sizeof (gdb_wchar_t
));
2013 for (i
= 0; i
+ width
<= orig_len
; i
+= width
)
2018 value
= extract_unsigned_integer (&orig
[i
], width
,
2020 /* If the value fits in 3 octal digits, print it that
2021 way. Otherwise, print it as a hex escape. */
2023 xsnprintf (octal
, sizeof (octal
), "\\%.3o",
2024 (int) (value
& 0777));
2026 xsnprintf (octal
, sizeof (octal
), "\\x%lx", (long) value
);
2027 append_string_as_wide (octal
, output
);
2029 /* If we somehow have extra bytes, print them now. */
2030 while (i
< orig_len
)
2034 xsnprintf (octal
, sizeof (octal
), "\\%.3o", orig
[i
] & 0xff);
2035 append_string_as_wide (octal
, output
);
2046 /* Print the character C on STREAM as part of the contents of a
2047 literal string whose delimiter is QUOTER. ENCODING names the
2051 generic_emit_char (int c
, struct type
*type
, struct ui_file
*stream
,
2052 int quoter
, const char *encoding
)
2054 enum bfd_endian byte_order
2055 = gdbarch_byte_order (get_type_arch (type
));
2056 struct obstack wchar_buf
, output
;
2057 struct cleanup
*cleanups
;
2059 struct wchar_iterator
*iter
;
2060 int need_escape
= 0;
2062 buf
= alloca (TYPE_LENGTH (type
));
2063 pack_long (buf
, type
, c
);
2065 iter
= make_wchar_iterator (buf
, TYPE_LENGTH (type
),
2066 encoding
, TYPE_LENGTH (type
));
2067 cleanups
= make_cleanup_wchar_iterator (iter
);
2069 /* This holds the printable form of the wchar_t data. */
2070 obstack_init (&wchar_buf
);
2071 make_cleanup_obstack_free (&wchar_buf
);
2077 const gdb_byte
*buf
;
2079 int print_escape
= 1;
2080 enum wchar_iterate_result result
;
2082 num_chars
= wchar_iterate (iter
, &result
, &chars
, &buf
, &buflen
);
2087 /* If all characters are printable, print them. Otherwise,
2088 we're going to have to print an escape sequence. We
2089 check all characters because we want to print the target
2090 bytes in the escape sequence, and we don't know character
2091 boundaries there. */
2095 for (i
= 0; i
< num_chars
; ++i
)
2096 if (!wchar_printable (chars
[i
]))
2104 for (i
= 0; i
< num_chars
; ++i
)
2105 print_wchar (chars
[i
], buf
, buflen
,
2106 TYPE_LENGTH (type
), byte_order
,
2107 &wchar_buf
, quoter
, &need_escape
);
2111 /* This handles the NUM_CHARS == 0 case as well. */
2113 print_wchar (gdb_WEOF
, buf
, buflen
, TYPE_LENGTH (type
),
2114 byte_order
, &wchar_buf
, quoter
, &need_escape
);
2117 /* The output in the host encoding. */
2118 obstack_init (&output
);
2119 make_cleanup_obstack_free (&output
);
2121 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2122 (gdb_byte
*) obstack_base (&wchar_buf
),
2123 obstack_object_size (&wchar_buf
),
2124 sizeof (gdb_wchar_t
), &output
, translit_char
);
2125 obstack_1grow (&output
, '\0');
2127 fputs_filtered (obstack_base (&output
), stream
);
2129 do_cleanups (cleanups
);
2132 /* Return the repeat count of the next character/byte in ITER,
2133 storing the result in VEC. */
2136 count_next_character (struct wchar_iterator
*iter
,
2137 VEC (converted_character_d
) **vec
)
2139 struct converted_character
*current
;
2141 if (VEC_empty (converted_character_d
, *vec
))
2143 struct converted_character tmp
;
2147 = wchar_iterate (iter
, &tmp
.result
, &chars
, &tmp
.buf
, &tmp
.buflen
);
2148 if (tmp
.num_chars
> 0)
2150 gdb_assert (tmp
.num_chars
< MAX_WCHARS
);
2151 memcpy (tmp
.chars
, chars
, tmp
.num_chars
* sizeof (gdb_wchar_t
));
2153 VEC_safe_push (converted_character_d
, *vec
, &tmp
);
2156 current
= VEC_last (converted_character_d
, *vec
);
2158 /* Count repeated characters or bytes. */
2159 current
->repeat_count
= 1;
2160 if (current
->num_chars
== -1)
2168 struct converted_character d
;
2175 /* Get the next character. */
2177 = wchar_iterate (iter
, &d
.result
, &chars
, &d
.buf
, &d
.buflen
);
2179 /* If a character was successfully converted, save the character
2180 into the converted character. */
2181 if (d
.num_chars
> 0)
2183 gdb_assert (d
.num_chars
< MAX_WCHARS
);
2184 memcpy (d
.chars
, chars
, WCHAR_BUFLEN (d
.num_chars
));
2187 /* Determine if the current character is the same as this
2189 if (d
.num_chars
== current
->num_chars
&& d
.result
== current
->result
)
2191 /* There are two cases to consider:
2193 1) Equality of converted character (num_chars > 0)
2194 2) Equality of non-converted character (num_chars == 0) */
2195 if ((current
->num_chars
> 0
2196 && memcmp (current
->chars
, d
.chars
,
2197 WCHAR_BUFLEN (current
->num_chars
)) == 0)
2198 || (current
->num_chars
== 0
2199 && current
->buflen
== d
.buflen
2200 && memcmp (current
->buf
, d
.buf
, current
->buflen
) == 0))
2201 ++current
->repeat_count
;
2209 /* Push this next converted character onto the result vector. */
2210 repeat
= current
->repeat_count
;
2211 VEC_safe_push (converted_character_d
, *vec
, &d
);
2216 /* Print the characters in CHARS to the OBSTACK. QUOTE_CHAR is the quote
2217 character to use with string output. WIDTH is the size of the output
2218 character type. BYTE_ORDER is the the target byte order. OPTIONS
2219 is the user's print options. */
2222 print_converted_chars_to_obstack (struct obstack
*obstack
,
2223 VEC (converted_character_d
) *chars
,
2224 int quote_char
, int width
,
2225 enum bfd_endian byte_order
,
2226 const struct value_print_options
*options
)
2229 struct converted_character
*elem
;
2230 enum {START
, SINGLE
, REPEAT
, INCOMPLETE
, FINISH
} state
, last
;
2231 gdb_wchar_t wide_quote_char
= gdb_btowc (quote_char
);
2232 int need_escape
= 0;
2234 /* Set the start state. */
2236 last
= state
= START
;
2244 /* Nothing to do. */
2251 /* We are outputting a single character
2252 (< options->repeat_count_threshold). */
2256 /* We were outputting some other type of content, so we
2257 must output and a comma and a quote. */
2259 obstack_grow_wstr (obstack
, LCST (", "));
2260 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2262 /* Output the character. */
2263 for (j
= 0; j
< elem
->repeat_count
; ++j
)
2265 if (elem
->result
== wchar_iterate_ok
)
2266 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2267 byte_order
, obstack
, quote_char
, &need_escape
);
2269 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2270 byte_order
, obstack
, quote_char
, &need_escape
);
2280 /* We are outputting a character with a repeat count
2281 greater than options->repeat_count_threshold. */
2285 /* We were outputting a single string. Terminate the
2287 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2290 obstack_grow_wstr (obstack
, LCST (", "));
2292 /* Output the character and repeat string. */
2293 obstack_grow_wstr (obstack
, LCST ("'"));
2294 if (elem
->result
== wchar_iterate_ok
)
2295 print_wchar (elem
->chars
[0], elem
->buf
, elem
->buflen
, width
,
2296 byte_order
, obstack
, quote_char
, &need_escape
);
2298 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
,
2299 byte_order
, obstack
, quote_char
, &need_escape
);
2300 obstack_grow_wstr (obstack
, LCST ("'"));
2301 s
= xstrprintf (_(" <repeats %u times>"), elem
->repeat_count
);
2302 for (j
= 0; s
[j
]; ++j
)
2304 gdb_wchar_t w
= gdb_btowc (s
[j
]);
2305 obstack_grow (obstack
, &w
, sizeof (gdb_wchar_t
));
2312 /* We are outputting an incomplete sequence. */
2315 /* If we were outputting a string of SINGLE characters,
2316 terminate the quote. */
2317 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2320 obstack_grow_wstr (obstack
, LCST (", "));
2322 /* Output the incomplete sequence string. */
2323 obstack_grow_wstr (obstack
, LCST ("<incomplete sequence "));
2324 print_wchar (gdb_WEOF
, elem
->buf
, elem
->buflen
, width
, byte_order
,
2325 obstack
, 0, &need_escape
);
2326 obstack_grow_wstr (obstack
, LCST (">"));
2328 /* We do not attempt to outupt anything after this. */
2333 /* All done. If we were outputting a string of SINGLE
2334 characters, the string must be terminated. Otherwise,
2335 REPEAT and INCOMPLETE are always left properly terminated. */
2337 obstack_grow (obstack
, &wide_quote_char
, sizeof (gdb_wchar_t
));
2342 /* Get the next element and state. */
2344 if (state
!= FINISH
)
2346 elem
= VEC_index (converted_character_d
, chars
, idx
++);
2347 switch (elem
->result
)
2349 case wchar_iterate_ok
:
2350 case wchar_iterate_invalid
:
2351 if (elem
->repeat_count
> options
->repeat_count_threshold
)
2357 case wchar_iterate_incomplete
:
2361 case wchar_iterate_eof
:
2369 /* Print the character string STRING, printing at most LENGTH
2370 characters. LENGTH is -1 if the string is nul terminated. TYPE is
2371 the type of each character. OPTIONS holds the printing options;
2372 printing stops early if the number hits print_max; repeat counts
2373 are printed as appropriate. Print ellipses at the end if we had to
2374 stop before printing LENGTH characters, or if FORCE_ELLIPSES.
2375 QUOTE_CHAR is the character to print at each end of the string. If
2376 C_STYLE_TERMINATOR is true, and the last character is 0, then it is
2380 generic_printstr (struct ui_file
*stream
, struct type
*type
,
2381 const gdb_byte
*string
, unsigned int length
,
2382 const char *encoding
, int force_ellipses
,
2383 int quote_char
, int c_style_terminator
,
2384 const struct value_print_options
*options
)
2386 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (type
));
2388 int width
= TYPE_LENGTH (type
);
2389 struct obstack wchar_buf
, output
;
2390 struct cleanup
*cleanup
;
2391 struct wchar_iterator
*iter
;
2393 struct converted_character
*last
;
2394 VEC (converted_character_d
) *converted_chars
;
2398 unsigned long current_char
= 1;
2400 for (i
= 0; current_char
; ++i
)
2403 current_char
= extract_unsigned_integer (string
+ i
* width
,
2409 /* If the string was not truncated due to `set print elements', and
2410 the last byte of it is a null, we don't print that, in
2411 traditional C style. */
2412 if (c_style_terminator
2415 && (extract_unsigned_integer (string
+ (length
- 1) * width
,
2416 width
, byte_order
) == 0))
2421 fputs_filtered ("\"\"", stream
);
2425 /* Arrange to iterate over the characters, in wchar_t form. */
2426 iter
= make_wchar_iterator (string
, length
* width
, encoding
, width
);
2427 cleanup
= make_cleanup_wchar_iterator (iter
);
2428 converted_chars
= NULL
;
2429 make_cleanup (VEC_cleanup (converted_character_d
), &converted_chars
);
2431 /* Convert characters until the string is over or the maximum
2432 number of printed characters has been reached. */
2434 while (i
< options
->print_max
)
2440 /* Grab the next character and repeat count. */
2441 r
= count_next_character (iter
, &converted_chars
);
2443 /* If less than zero, the end of the input string was reached. */
2447 /* Otherwise, add the count to the total print count and get
2448 the next character. */
2452 /* Get the last element and determine if the entire string was
2454 last
= VEC_last (converted_character_d
, converted_chars
);
2455 finished
= (last
->result
== wchar_iterate_eof
);
2457 /* Ensure that CONVERTED_CHARS is terminated. */
2458 last
->result
= wchar_iterate_eof
;
2460 /* WCHAR_BUF is the obstack we use to represent the string in
2462 obstack_init (&wchar_buf
);
2463 make_cleanup_obstack_free (&wchar_buf
);
2465 /* Print the output string to the obstack. */
2466 print_converted_chars_to_obstack (&wchar_buf
, converted_chars
, quote_char
,
2467 width
, byte_order
, options
);
2469 if (force_ellipses
|| !finished
)
2470 obstack_grow_wstr (&wchar_buf
, LCST ("..."));
2472 /* OUTPUT is where we collect `char's for printing. */
2473 obstack_init (&output
);
2474 make_cleanup_obstack_free (&output
);
2476 convert_between_encodings (INTERMEDIATE_ENCODING
, host_charset (),
2477 (gdb_byte
*) obstack_base (&wchar_buf
),
2478 obstack_object_size (&wchar_buf
),
2479 sizeof (gdb_wchar_t
), &output
, translit_char
);
2480 obstack_1grow (&output
, '\0');
2482 fputs_filtered (obstack_base (&output
), stream
);
2484 do_cleanups (cleanup
);
2487 /* Print a string from the inferior, starting at ADDR and printing up to LEN
2488 characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing
2489 stops at the first null byte, otherwise printing proceeds (including null
2490 bytes) until either print_max or LEN characters have been printed,
2491 whichever is smaller. ENCODING is the name of the string's
2492 encoding. It can be NULL, in which case the target encoding is
2496 val_print_string (struct type
*elttype
, const char *encoding
,
2497 CORE_ADDR addr
, int len
,
2498 struct ui_file
*stream
,
2499 const struct value_print_options
*options
)
2501 int force_ellipsis
= 0; /* Force ellipsis to be printed if nonzero. */
2502 int errcode
; /* Errno returned from bad reads. */
2503 int found_nul
; /* Non-zero if we found the nul char. */
2504 unsigned int fetchlimit
; /* Maximum number of chars to print. */
2506 gdb_byte
*buffer
= NULL
; /* Dynamically growable fetch buffer. */
2507 struct cleanup
*old_chain
= NULL
; /* Top of the old cleanup chain. */
2508 struct gdbarch
*gdbarch
= get_type_arch (elttype
);
2509 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
2510 int width
= TYPE_LENGTH (elttype
);
2512 /* First we need to figure out the limit on the number of characters we are
2513 going to attempt to fetch and print. This is actually pretty simple. If
2514 LEN >= zero, then the limit is the minimum of LEN and print_max. If
2515 LEN is -1, then the limit is print_max. This is true regardless of
2516 whether print_max is zero, UINT_MAX (unlimited), or something in between,
2517 because finding the null byte (or available memory) is what actually
2518 limits the fetch. */
2520 fetchlimit
= (len
== -1 ? options
->print_max
: min (len
,
2521 options
->print_max
));
2523 errcode
= read_string (addr
, len
, width
, fetchlimit
, byte_order
,
2524 &buffer
, &bytes_read
);
2525 old_chain
= make_cleanup (xfree
, buffer
);
2529 /* We now have either successfully filled the buffer to fetchlimit,
2530 or terminated early due to an error or finding a null char when
2533 /* Determine found_nul by looking at the last character read. */
2535 if (bytes_read
>= width
)
2536 found_nul
= extract_unsigned_integer (buffer
+ bytes_read
- width
, width
,
2538 if (len
== -1 && !found_nul
)
2542 /* We didn't find a NUL terminator we were looking for. Attempt
2543 to peek at the next character. If not successful, or it is not
2544 a null byte, then force ellipsis to be printed. */
2546 peekbuf
= (gdb_byte
*) alloca (width
);
2548 if (target_read_memory (addr
, peekbuf
, width
) == 0
2549 && extract_unsigned_integer (peekbuf
, width
, byte_order
) != 0)
2552 else if ((len
>= 0 && errcode
!= 0) || (len
> bytes_read
/ width
))
2554 /* Getting an error when we have a requested length, or fetching less
2555 than the number of characters actually requested, always make us
2560 /* If we get an error before fetching anything, don't print a string.
2561 But if we fetch something and then get an error, print the string
2562 and then the error message. */
2563 if (errcode
== 0 || bytes_read
> 0)
2565 LA_PRINT_STRING (stream
, elttype
, buffer
, bytes_read
/ width
,
2566 encoding
, force_ellipsis
, options
);
2573 str
= memory_error_message (errcode
, gdbarch
, addr
);
2574 make_cleanup (xfree
, str
);
2576 fprintf_filtered (stream
, "<error: ");
2577 fputs_filtered (str
, stream
);
2578 fprintf_filtered (stream
, ">");
2582 do_cleanups (old_chain
);
2584 return (bytes_read
/ width
);
2588 /* The 'set input-radix' command writes to this auxiliary variable.
2589 If the requested radix is valid, INPUT_RADIX is updated; otherwise,
2590 it is left unchanged. */
2592 static unsigned input_radix_1
= 10;
2594 /* Validate an input or output radix setting, and make sure the user
2595 knows what they really did here. Radix setting is confusing, e.g.
2596 setting the input radix to "10" never changes it! */
2599 set_input_radix (char *args
, int from_tty
, struct cmd_list_element
*c
)
2601 set_input_radix_1 (from_tty
, input_radix_1
);
2605 set_input_radix_1 (int from_tty
, unsigned radix
)
2607 /* We don't currently disallow any input radix except 0 or 1, which don't
2608 make any mathematical sense. In theory, we can deal with any input
2609 radix greater than 1, even if we don't have unique digits for every
2610 value from 0 to radix-1, but in practice we lose on large radix values.
2611 We should either fix the lossage or restrict the radix range more.
2616 input_radix_1
= input_radix
;
2617 error (_("Nonsense input radix ``decimal %u''; input radix unchanged."),
2620 input_radix_1
= input_radix
= radix
;
2623 printf_filtered (_("Input radix now set to "
2624 "decimal %u, hex %x, octal %o.\n"),
2625 radix
, radix
, radix
);
2629 /* The 'set output-radix' command writes to this auxiliary variable.
2630 If the requested radix is valid, OUTPUT_RADIX is updated,
2631 otherwise, it is left unchanged. */
2633 static unsigned output_radix_1
= 10;
2636 set_output_radix (char *args
, int from_tty
, struct cmd_list_element
*c
)
2638 set_output_radix_1 (from_tty
, output_radix_1
);
2642 set_output_radix_1 (int from_tty
, unsigned radix
)
2644 /* Validate the radix and disallow ones that we aren't prepared to
2645 handle correctly, leaving the radix unchanged. */
2649 user_print_options
.output_format
= 'x'; /* hex */
2652 user_print_options
.output_format
= 0; /* decimal */
2655 user_print_options
.output_format
= 'o'; /* octal */
2658 output_radix_1
= output_radix
;
2659 error (_("Unsupported output radix ``decimal %u''; "
2660 "output radix unchanged."),
2663 output_radix_1
= output_radix
= radix
;
2666 printf_filtered (_("Output radix now set to "
2667 "decimal %u, hex %x, octal %o.\n"),
2668 radix
, radix
, radix
);
2672 /* Set both the input and output radix at once. Try to set the output radix
2673 first, since it has the most restrictive range. An radix that is valid as
2674 an output radix is also valid as an input radix.
2676 It may be useful to have an unusual input radix. If the user wishes to
2677 set an input radix that is not valid as an output radix, he needs to use
2678 the 'set input-radix' command. */
2681 set_radix (char *arg
, int from_tty
)
2685 radix
= (arg
== NULL
) ? 10 : parse_and_eval_long (arg
);
2686 set_output_radix_1 (0, radix
);
2687 set_input_radix_1 (0, radix
);
2690 printf_filtered (_("Input and output radices now set to "
2691 "decimal %u, hex %x, octal %o.\n"),
2692 radix
, radix
, radix
);
2696 /* Show both the input and output radices. */
2699 show_radix (char *arg
, int from_tty
)
2703 if (input_radix
== output_radix
)
2705 printf_filtered (_("Input and output radices set to "
2706 "decimal %u, hex %x, octal %o.\n"),
2707 input_radix
, input_radix
, input_radix
);
2711 printf_filtered (_("Input radix set to decimal "
2712 "%u, hex %x, octal %o.\n"),
2713 input_radix
, input_radix
, input_radix
);
2714 printf_filtered (_("Output radix set to decimal "
2715 "%u, hex %x, octal %o.\n"),
2716 output_radix
, output_radix
, output_radix
);
2723 set_print (char *arg
, int from_tty
)
2726 "\"set print\" must be followed by the name of a print subcommand.\n");
2727 help_list (setprintlist
, "set print ", all_commands
, gdb_stdout
);
2731 show_print (char *args
, int from_tty
)
2733 cmd_show_list (showprintlist
, from_tty
, "");
2737 set_print_raw (char *arg
, int from_tty
)
2740 "\"set print raw\" must be followed by the name of a \"print raw\" subcommand.\n");
2741 help_list (setprintrawlist
, "set print raw ", all_commands
, gdb_stdout
);
2745 show_print_raw (char *args
, int from_tty
)
2747 cmd_show_list (showprintrawlist
, from_tty
, "");
2752 _initialize_valprint (void)
2754 add_prefix_cmd ("print", no_class
, set_print
,
2755 _("Generic command for setting how things print."),
2756 &setprintlist
, "set print ", 0, &setlist
);
2757 add_alias_cmd ("p", "print", no_class
, 1, &setlist
);
2758 /* Prefer set print to set prompt. */
2759 add_alias_cmd ("pr", "print", no_class
, 1, &setlist
);
2761 add_prefix_cmd ("print", no_class
, show_print
,
2762 _("Generic command for showing print settings."),
2763 &showprintlist
, "show print ", 0, &showlist
);
2764 add_alias_cmd ("p", "print", no_class
, 1, &showlist
);
2765 add_alias_cmd ("pr", "print", no_class
, 1, &showlist
);
2767 add_prefix_cmd ("raw", no_class
, set_print_raw
,
2769 Generic command for setting what things to print in \"raw\" mode."),
2770 &setprintrawlist
, "set print raw ", 0, &setprintlist
);
2771 add_prefix_cmd ("raw", no_class
, show_print_raw
,
2772 _("Generic command for showing \"print raw\" settings."),
2773 &showprintrawlist
, "show print raw ", 0, &showprintlist
);
2775 add_setshow_uinteger_cmd ("elements", no_class
,
2776 &user_print_options
.print_max
, _("\
2777 Set limit on string chars or array elements to print."), _("\
2778 Show limit on string chars or array elements to print."), _("\
2779 \"set print elements unlimited\" causes there to be no limit."),
2782 &setprintlist
, &showprintlist
);
2784 add_setshow_boolean_cmd ("null-stop", no_class
,
2785 &user_print_options
.stop_print_at_null
, _("\
2786 Set printing of char arrays to stop at first null char."), _("\
2787 Show printing of char arrays to stop at first null char."), NULL
,
2789 show_stop_print_at_null
,
2790 &setprintlist
, &showprintlist
);
2792 add_setshow_uinteger_cmd ("repeats", no_class
,
2793 &user_print_options
.repeat_count_threshold
, _("\
2794 Set threshold for repeated print elements."), _("\
2795 Show threshold for repeated print elements."), _("\
2796 \"set print repeats unlimited\" causes all elements to be individually printed."),
2798 show_repeat_count_threshold
,
2799 &setprintlist
, &showprintlist
);
2801 add_setshow_boolean_cmd ("pretty", class_support
,
2802 &user_print_options
.prettyformat_structs
, _("\
2803 Set pretty formatting of structures."), _("\
2804 Show pretty formatting of structures."), NULL
,
2806 show_prettyformat_structs
,
2807 &setprintlist
, &showprintlist
);
2809 add_setshow_boolean_cmd ("union", class_support
,
2810 &user_print_options
.unionprint
, _("\
2811 Set printing of unions interior to structures."), _("\
2812 Show printing of unions interior to structures."), NULL
,
2815 &setprintlist
, &showprintlist
);
2817 add_setshow_boolean_cmd ("array", class_support
,
2818 &user_print_options
.prettyformat_arrays
, _("\
2819 Set pretty formatting of arrays."), _("\
2820 Show pretty formatting of arrays."), NULL
,
2822 show_prettyformat_arrays
,
2823 &setprintlist
, &showprintlist
);
2825 add_setshow_boolean_cmd ("address", class_support
,
2826 &user_print_options
.addressprint
, _("\
2827 Set printing of addresses."), _("\
2828 Show printing of addresses."), NULL
,
2831 &setprintlist
, &showprintlist
);
2833 add_setshow_boolean_cmd ("symbol", class_support
,
2834 &user_print_options
.symbol_print
, _("\
2835 Set printing of symbol names when printing pointers."), _("\
2836 Show printing of symbol names when printing pointers."),
2839 &setprintlist
, &showprintlist
);
2841 add_setshow_zuinteger_cmd ("input-radix", class_support
, &input_radix_1
,
2843 Set default input radix for entering numbers."), _("\
2844 Show default input radix for entering numbers."), NULL
,
2847 &setlist
, &showlist
);
2849 add_setshow_zuinteger_cmd ("output-radix", class_support
, &output_radix_1
,
2851 Set default output radix for printing of values."), _("\
2852 Show default output radix for printing of values."), NULL
,
2855 &setlist
, &showlist
);
2857 /* The "set radix" and "show radix" commands are special in that
2858 they are like normal set and show commands but allow two normally
2859 independent variables to be either set or shown with a single
2860 command. So the usual deprecated_add_set_cmd() and [deleted]
2861 add_show_from_set() commands aren't really appropriate. */
2862 /* FIXME: i18n: With the new add_setshow_integer command, that is no
2863 longer true - show can display anything. */
2864 add_cmd ("radix", class_support
, set_radix
, _("\
2865 Set default input and output number radices.\n\
2866 Use 'set input-radix' or 'set output-radix' to independently set each.\n\
2867 Without an argument, sets both radices back to the default value of 10."),
2869 add_cmd ("radix", class_support
, show_radix
, _("\
2870 Show the default input and output number radices.\n\
2871 Use 'show input-radix' or 'show output-radix' to independently show each."),
2874 add_setshow_boolean_cmd ("array-indexes", class_support
,
2875 &user_print_options
.print_array_indexes
, _("\
2876 Set printing of array indexes."), _("\
2877 Show printing of array indexes"), NULL
, NULL
, show_print_array_indexes
,
2878 &setprintlist
, &showprintlist
);