1 /* Support for printing Modula 2 values for GDB, the GNU debugger.
3 Copyright (C) 1986, 1988-1989, 1991-1992, 1996, 1998, 2000, 2005-2012
4 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include "expression.h"
28 #include "typeprint.h"
33 static int print_unpacked_pointer (struct type
*type
,
34 CORE_ADDR address
, CORE_ADDR addr
,
35 const struct value_print_options
*options
,
36 struct ui_file
*stream
);
38 m2_print_array_contents (struct type
*type
, const gdb_byte
*valaddr
,
39 int embedded_offset
, CORE_ADDR address
,
40 struct ui_file
*stream
, int recurse
,
41 const struct value
*val
,
42 const struct value_print_options
*options
,
46 /* Print function pointer with inferior address ADDRESS onto stdio
50 print_function_pointer_address (struct gdbarch
*gdbarch
, CORE_ADDR address
,
51 struct ui_file
*stream
, int addressprint
)
53 CORE_ADDR func_addr
= gdbarch_convert_from_func_ptr_addr (gdbarch
, address
,
56 /* If the function pointer is represented by a description, print the
57 address of the description. */
58 if (addressprint
&& func_addr
!= address
)
60 fputs_filtered ("@", stream
);
61 fputs_filtered (paddress (gdbarch
, address
), stream
);
62 fputs_filtered (": ", stream
);
64 print_address_demangle (gdbarch
, func_addr
, stream
, demangle
);
67 /* get_long_set_bounds - assigns the bounds of the long set to low and
71 get_long_set_bounds (struct type
*type
, LONGEST
*low
, LONGEST
*high
)
75 if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
)
77 len
= TYPE_NFIELDS (type
);
78 i
= TYPE_N_BASECLASSES (type
);
81 *low
= TYPE_LOW_BOUND (TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type
, i
)));
82 *high
= TYPE_HIGH_BOUND (TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type
,
86 error (_("expecting long_set"));
91 m2_print_long_set (struct type
*type
, const gdb_byte
*valaddr
,
92 int embedded_offset
, CORE_ADDR address
,
93 struct ui_file
*stream
)
97 LONGEST previous_low
= 0;
98 LONGEST previous_high
= 0;
99 LONGEST i
, low_bound
, high_bound
;
100 LONGEST field_low
, field_high
;
106 CHECK_TYPEDEF (type
);
108 fprintf_filtered (stream
, "{");
109 len
= TYPE_NFIELDS (type
);
110 if (get_long_set_bounds (type
, &low_bound
, &high_bound
))
112 field
= TYPE_N_BASECLASSES (type
);
113 range
= TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type
, field
));
117 fprintf_filtered (stream
, " %s }", _("<unknown bounds of set>"));
121 target
= TYPE_TARGET_TYPE (range
);
123 if (get_discrete_bounds (range
, &field_low
, &field_high
) >= 0)
125 for (i
= low_bound
; i
<= high_bound
; i
++)
127 bitval
= value_bit_index (TYPE_FIELD_TYPE (type
, field
),
128 (TYPE_FIELD_BITPOS (type
, field
) / 8) +
129 valaddr
+ embedded_offset
, i
);
131 error (_("bit test is out of range"));
138 fprintf_filtered (stream
, ", ");
139 print_type_scalar (target
, i
, stream
);
150 if (previous_low
+1 < previous_high
)
151 fprintf_filtered (stream
, "..");
152 if (previous_low
+1 < previous_high
)
153 print_type_scalar (target
, previous_high
, stream
);
162 range
= TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type
, field
));
163 if (get_discrete_bounds (range
, &field_low
, &field_high
) < 0)
165 target
= TYPE_TARGET_TYPE (range
);
170 if (previous_low
+1 < previous_high
)
172 fprintf_filtered (stream
, "..");
173 print_type_scalar (target
, previous_high
, stream
);
177 fprintf_filtered (stream
, "}");
182 m2_print_unbounded_array (struct type
*type
, const gdb_byte
*valaddr
,
183 int embedded_offset
, CORE_ADDR address
,
184 struct ui_file
*stream
, int recurse
,
185 const struct value_print_options
*options
)
187 struct type
*content_type
;
192 CHECK_TYPEDEF (type
);
193 content_type
= TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type
, 0));
195 addr
= unpack_pointer (TYPE_FIELD_TYPE (type
, 0),
196 (TYPE_FIELD_BITPOS (type
, 0) / 8) +
197 valaddr
+ embedded_offset
);
199 val
= value_at_lazy (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type
, 0)),
201 len
= unpack_field_as_long (type
, valaddr
+ embedded_offset
, 1);
203 fprintf_filtered (stream
, "{");
204 m2_print_array_contents (value_type (val
),
205 value_contents_for_printing (val
),
206 value_embedded_offset (val
), addr
, stream
,
207 recurse
, val
, options
, len
);
208 fprintf_filtered (stream
, ", HIGH = %d}", (int) len
);
212 print_unpacked_pointer (struct type
*type
,
213 CORE_ADDR address
, CORE_ADDR addr
,
214 const struct value_print_options
*options
,
215 struct ui_file
*stream
)
217 struct gdbarch
*gdbarch
= get_type_arch (type
);
218 struct type
*elttype
= check_typedef (TYPE_TARGET_TYPE (type
));
220 if (TYPE_CODE (elttype
) == TYPE_CODE_FUNC
)
222 /* Try to print what function it points to. */
223 print_function_pointer_address (gdbarch
, addr
, stream
,
224 options
->addressprint
);
225 /* Return value is irrelevant except for string pointers. */
229 if (options
->addressprint
&& options
->format
!= 's')
230 fputs_filtered (paddress (gdbarch
, address
), stream
);
232 /* For a pointer to char or unsigned char, also print the string
233 pointed to, unless pointer is null. */
235 if (TYPE_LENGTH (elttype
) == 1
236 && TYPE_CODE (elttype
) == TYPE_CODE_INT
237 && (options
->format
== 0 || options
->format
== 's')
239 return val_print_string (TYPE_TARGET_TYPE (type
), NULL
, addr
, -1,
246 print_variable_at_address (struct type
*type
,
247 const gdb_byte
*valaddr
,
248 struct ui_file
*stream
,
250 const struct value_print_options
*options
)
252 struct gdbarch
*gdbarch
= get_type_arch (type
);
253 CORE_ADDR addr
= unpack_pointer (type
, valaddr
);
254 struct type
*elttype
= check_typedef (TYPE_TARGET_TYPE (type
));
256 fprintf_filtered (stream
, "[");
257 fputs_filtered (paddress (gdbarch
, addr
), stream
);
258 fprintf_filtered (stream
, "] : ");
260 if (TYPE_CODE (elttype
) != TYPE_CODE_UNDEF
)
262 struct value
*deref_val
=
263 value_at (TYPE_TARGET_TYPE (type
), unpack_pointer (type
, valaddr
));
265 common_val_print (deref_val
, stream
, recurse
, options
, current_language
);
268 fputs_filtered ("???", stream
);
272 /* m2_print_array_contents - prints out the contents of an
273 array up to a max_print values.
274 It prints arrays of char as a string
275 and all other data types as comma
279 m2_print_array_contents (struct type
*type
, const gdb_byte
*valaddr
,
280 int embedded_offset
, CORE_ADDR address
,
281 struct ui_file
*stream
, int recurse
,
282 const struct value
*val
,
283 const struct value_print_options
*options
,
287 CHECK_TYPEDEF (type
);
289 if (TYPE_LENGTH (type
) > 0)
291 eltlen
= TYPE_LENGTH (type
);
292 if (options
->prettyprint_arrays
)
293 print_spaces_filtered (2 + 2 * recurse
, stream
);
294 /* For an array of chars, print with string syntax. */
296 ((TYPE_CODE (type
) == TYPE_CODE_INT
)
297 || ((current_language
->la_language
== language_m2
)
298 && (TYPE_CODE (type
) == TYPE_CODE_CHAR
)))
299 && (options
->format
== 0 || options
->format
== 's'))
300 val_print_string (type
, NULL
, address
, len
+1, stream
, options
);
303 fprintf_filtered (stream
, "{");
304 val_print_array_elements (type
, valaddr
, embedded_offset
,
305 address
, stream
, recurse
, val
,
307 fprintf_filtered (stream
, "}");
313 /* See val_print for a description of the various parameters of this
314 function; they are identical. The semantics of the return value is
315 also identical to val_print. */
318 m2_val_print (struct type
*type
, const gdb_byte
*valaddr
, int embedded_offset
,
319 CORE_ADDR address
, struct ui_file
*stream
, int recurse
,
320 const struct value
*original_value
,
321 const struct value_print_options
*options
)
323 struct gdbarch
*gdbarch
= get_type_arch (type
);
324 unsigned int i
= 0; /* Number of characters printed. */
326 struct type
*elttype
;
331 CHECK_TYPEDEF (type
);
332 switch (TYPE_CODE (type
))
334 case TYPE_CODE_ARRAY
:
335 if (TYPE_LENGTH (type
) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type
)) > 0)
337 elttype
= check_typedef (TYPE_TARGET_TYPE (type
));
338 eltlen
= TYPE_LENGTH (elttype
);
339 len
= TYPE_LENGTH (type
) / eltlen
;
340 if (options
->prettyprint_arrays
)
341 print_spaces_filtered (2 + 2 * recurse
, stream
);
342 /* For an array of chars, print with string syntax. */
344 ((TYPE_CODE (elttype
) == TYPE_CODE_INT
)
345 || ((current_language
->la_language
== language_m2
)
346 && (TYPE_CODE (elttype
) == TYPE_CODE_CHAR
)))
347 && (options
->format
== 0 || options
->format
== 's'))
349 /* If requested, look for the first null char and only print
350 elements up to it. */
351 if (options
->stop_print_at_null
)
353 unsigned int temp_len
;
355 /* Look for a NULL char. */
357 (valaddr
+ embedded_offset
)[temp_len
]
358 && temp_len
< len
&& temp_len
< options
->print_max
;
363 LA_PRINT_STRING (stream
, TYPE_TARGET_TYPE (type
),
364 valaddr
+ embedded_offset
, len
, NULL
,
370 fprintf_filtered (stream
, "{");
371 val_print_array_elements (type
, valaddr
, embedded_offset
,
373 recurse
, original_value
,
375 fprintf_filtered (stream
, "}");
379 /* Array of unspecified length: treat like pointer to first elt. */
380 print_unpacked_pointer (type
, address
, address
, options
, stream
);
384 if (TYPE_CONST (type
))
385 print_variable_at_address (type
, valaddr
+ embedded_offset
,
386 stream
, recurse
, options
);
387 else if (options
->format
&& options
->format
!= 's')
388 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
389 original_value
, options
, 0, stream
);
392 addr
= unpack_pointer (type
, valaddr
+ embedded_offset
);
393 print_unpacked_pointer (type
, addr
, address
, options
, stream
);
398 elttype
= check_typedef (TYPE_TARGET_TYPE (type
));
399 if (options
->addressprint
)
402 = extract_typed_address (valaddr
+ embedded_offset
, type
);
404 fprintf_filtered (stream
, "@");
405 fputs_filtered (paddress (gdbarch
, addr
), stream
);
406 if (options
->deref_ref
)
407 fputs_filtered (": ", stream
);
409 /* De-reference the reference. */
410 if (options
->deref_ref
)
412 if (TYPE_CODE (elttype
) != TYPE_CODE_UNDEF
)
414 struct value
*deref_val
=
416 (TYPE_TARGET_TYPE (type
),
417 unpack_pointer (type
, valaddr
+ embedded_offset
));
419 common_val_print (deref_val
, stream
, recurse
, options
,
423 fputs_filtered ("???", stream
);
427 case TYPE_CODE_UNION
:
428 if (recurse
&& !options
->unionprint
)
430 fprintf_filtered (stream
, "{...}");
434 case TYPE_CODE_STRUCT
:
435 if (m2_is_long_set (type
))
436 m2_print_long_set (type
, valaddr
, embedded_offset
, address
,
438 else if (m2_is_unbounded_array (type
))
439 m2_print_unbounded_array (type
, valaddr
, embedded_offset
,
440 address
, stream
, recurse
, options
);
442 cp_print_value_fields (type
, type
, valaddr
, embedded_offset
,
443 address
, stream
, recurse
, original_value
,
450 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
451 original_value
, options
, 0, stream
);
454 len
= TYPE_NFIELDS (type
);
455 val
= unpack_long (type
, valaddr
+ embedded_offset
);
456 for (i
= 0; i
< len
; i
++)
459 if (val
== TYPE_FIELD_BITPOS (type
, i
))
466 fputs_filtered (TYPE_FIELD_NAME (type
, i
), stream
);
470 print_longest (stream
, 'd', 0, val
);
477 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
478 original_value
, options
, 0, stream
);
481 /* FIXME, we should consider, at least for ANSI C language, eliminating
482 the distinction made between FUNCs and POINTERs to FUNCs. */
483 fprintf_filtered (stream
, "{");
484 type_print (type
, "", stream
, -1);
485 fprintf_filtered (stream
, "} ");
486 /* Try to print what function it points to, and its address. */
487 print_address_demangle (gdbarch
, address
, stream
, demangle
);
491 if (options
->format
|| options
->output_format
)
493 struct value_print_options opts
= *options
;
495 opts
.format
= (options
->format
? options
->format
496 : options
->output_format
);
497 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
498 original_value
, &opts
, 0, stream
);
502 val
= unpack_long (type
, valaddr
+ embedded_offset
);
504 fputs_filtered ("FALSE", stream
);
506 fputs_filtered ("TRUE", stream
);
508 fprintf_filtered (stream
, "%ld)", (long int) val
);
512 case TYPE_CODE_RANGE
:
513 if (TYPE_LENGTH (type
) == TYPE_LENGTH (TYPE_TARGET_TYPE (type
)))
515 m2_val_print (TYPE_TARGET_TYPE (type
), valaddr
, embedded_offset
,
516 address
, stream
, recurse
, original_value
, options
);
519 /* FIXME: create_range_type does not set the unsigned bit in a
520 range type (I think it probably should copy it from the target
521 type), so we won't print values which are too large to
522 fit in a signed integer correctly. */
523 /* FIXME: Doesn't handle ranges of enums correctly. (Can't just
524 print with the target type, though, because the size of our type
525 and the target type might differ). */
529 if (options
->format
|| options
->output_format
)
531 struct value_print_options opts
= *options
;
533 opts
.format
= (options
->format
? options
->format
534 : options
->output_format
);
535 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
536 original_value
, &opts
, 0, stream
);
539 val_print_type_code_int (type
, valaddr
+ embedded_offset
, stream
);
543 if (options
->format
|| options
->output_format
)
545 struct value_print_options opts
= *options
;
547 opts
.format
= (options
->format
? options
->format
548 : options
->output_format
);
549 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
550 original_value
, &opts
, 0, stream
);
554 val
= unpack_long (type
, valaddr
+ embedded_offset
);
555 if (TYPE_UNSIGNED (type
))
556 fprintf_filtered (stream
, "%u", (unsigned int) val
);
558 fprintf_filtered (stream
, "%d", (int) val
);
559 fputs_filtered (" ", stream
);
560 LA_PRINT_CHAR ((unsigned char) val
, type
, stream
);
566 val_print_scalar_formatted (type
, valaddr
, embedded_offset
,
567 original_value
, options
, 0, stream
);
569 print_floating (valaddr
+ embedded_offset
, type
, stream
);
572 case TYPE_CODE_METHOD
:
575 case TYPE_CODE_BITSTRING
:
577 elttype
= TYPE_INDEX_TYPE (type
);
578 CHECK_TYPEDEF (elttype
);
579 if (TYPE_STUB (elttype
))
581 fprintf_filtered (stream
, _("<incomplete type>"));
587 struct type
*range
= elttype
;
588 LONGEST low_bound
, high_bound
;
590 int is_bitstring
= TYPE_CODE (type
) == TYPE_CODE_BITSTRING
;
594 fputs_filtered ("B'", stream
);
596 fputs_filtered ("{", stream
);
598 i
= get_discrete_bounds (range
, &low_bound
, &high_bound
);
602 fputs_filtered (_("<error value>"), stream
);
606 for (i
= low_bound
; i
<= high_bound
; i
++)
608 int element
= value_bit_index (type
, valaddr
+ embedded_offset
,
614 goto maybe_bad_bstring
;
617 fprintf_filtered (stream
, "%d", element
);
621 fputs_filtered (", ", stream
);
622 print_type_scalar (range
, i
, stream
);
625 if (i
+ 1 <= high_bound
626 && value_bit_index (type
, valaddr
+ embedded_offset
,
631 fputs_filtered ("..", stream
);
632 while (i
+ 1 <= high_bound
633 && value_bit_index (type
,
634 valaddr
+ embedded_offset
,
637 print_type_scalar (range
, j
, stream
);
643 fputs_filtered ("'", stream
);
645 fputs_filtered ("}", stream
);
650 fprintf_filtered (stream
, "void");
653 case TYPE_CODE_ERROR
:
654 fprintf_filtered (stream
, "%s", TYPE_ERROR_NAME (type
));
657 case TYPE_CODE_UNDEF
:
658 /* This happens (without TYPE_FLAG_STUB set) on systems which don't use
659 dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
660 and no complete type for struct foo in that file. */
661 fprintf_filtered (stream
, _("<incomplete type>"));
665 error (_("Invalid m2 type code %d in symbol table."), TYPE_CODE (type
));
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