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 /* get_long_set_bounds - assigns the bounds of the long set to low and
50 get_long_set_bounds (struct type *type, LONGEST *low, LONGEST *high)
54 if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
56 len = TYPE_NFIELDS (type);
57 i = TYPE_N_BASECLASSES (type);
60 *low = TYPE_LOW_BOUND (TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type, i)));
61 *high = TYPE_HIGH_BOUND (TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type,
65 error (_("expecting long_set"));
70 m2_print_long_set (struct type *type, const gdb_byte *valaddr,
71 int embedded_offset, CORE_ADDR address,
72 struct ui_file *stream)
76 LONGEST previous_low = 0;
77 LONGEST previous_high= 0;
78 LONGEST i, low_bound, high_bound;
79 LONGEST field_low, field_high;
87 fprintf_filtered (stream, "{");
88 len = TYPE_NFIELDS (type);
89 if (get_long_set_bounds (type, &low_bound, &high_bound))
91 field = TYPE_N_BASECLASSES (type);
92 range = TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type, field));
96 fprintf_filtered (stream, " %s }", _("<unknown bounds of set>"));
100 target = TYPE_TARGET_TYPE (range);
102 if (get_discrete_bounds (range, &field_low, &field_high) >= 0)
104 for (i = low_bound; i <= high_bound; i++)
106 bitval = value_bit_index (TYPE_FIELD_TYPE (type, field),
107 (TYPE_FIELD_BITPOS (type, field) / 8) +
108 valaddr + embedded_offset, i);
110 error (_("bit test is out of range"));
117 fprintf_filtered (stream, ", ");
118 print_type_scalar (target, i, stream);
129 if (previous_low+1 < previous_high)
130 fprintf_filtered (stream, "..");
131 if (previous_low+1 < previous_high)
132 print_type_scalar (target, previous_high, stream);
141 range = TYPE_INDEX_TYPE (TYPE_FIELD_TYPE (type, field));
142 if (get_discrete_bounds (range, &field_low, &field_high) < 0)
144 target = TYPE_TARGET_TYPE (range);
149 if (previous_low+1 < previous_high)
151 fprintf_filtered (stream, "..");
152 print_type_scalar (target, previous_high, stream);
156 fprintf_filtered (stream, "}");
161 m2_print_unbounded_array (struct type *type, const gdb_byte *valaddr,
162 int embedded_offset, CORE_ADDR address,
163 struct ui_file *stream, int recurse,
164 const struct value_print_options *options)
166 struct type *content_type;
171 CHECK_TYPEDEF (type);
172 content_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0));
174 addr = unpack_pointer (TYPE_FIELD_TYPE (type, 0),
175 (TYPE_FIELD_BITPOS (type, 0) / 8) +
176 valaddr + embedded_offset);
178 val = value_at_lazy (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0)),
180 len = unpack_field_as_long (type, valaddr + embedded_offset, 1);
182 fprintf_filtered (stream, "{");
183 m2_print_array_contents (value_type (val),
184 value_contents_for_printing (val),
185 value_embedded_offset (val), addr, stream,
186 recurse, val, options, len);
187 fprintf_filtered (stream, ", HIGH = %d}", (int) len);
191 print_unpacked_pointer (struct type *type,
192 CORE_ADDR address, CORE_ADDR addr,
193 const struct value_print_options *options,
194 struct ui_file *stream)
196 struct gdbarch *gdbarch = get_type_arch (type);
197 struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));
199 if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
201 /* Try to print what function it points to. */
202 print_function_pointer_address (options, gdbarch, addr, stream);
203 /* Return value is irrelevant except for string pointers. */
207 if (options->addressprint && options->format != 's')
208 fputs_filtered (paddress (gdbarch, address), stream);
210 /* For a pointer to char or unsigned char, also print the string
211 pointed to, unless pointer is null. */
213 if (TYPE_LENGTH (elttype) == 1
214 && TYPE_CODE (elttype) == TYPE_CODE_INT
215 && (options->format == 0 || options->format == 's')
217 return val_print_string (TYPE_TARGET_TYPE (type), NULL, addr, -1,
224 print_variable_at_address (struct type *type,
225 const gdb_byte *valaddr,
226 struct ui_file *stream,
228 const struct value_print_options *options)
230 struct gdbarch *gdbarch = get_type_arch (type);
231 CORE_ADDR addr = unpack_pointer (type, valaddr);
232 struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));
234 fprintf_filtered (stream, "[");
235 fputs_filtered (paddress (gdbarch, addr), stream);
236 fprintf_filtered (stream, "] : ");
238 if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
240 struct value *deref_val =
241 value_at (TYPE_TARGET_TYPE (type), unpack_pointer (type, valaddr));
243 common_val_print (deref_val, stream, recurse, options, current_language);
246 fputs_filtered ("???", stream);
250 /* m2_print_array_contents - prints out the contents of an
251 array up to a max_print values.
252 It prints arrays of char as a string
253 and all other data types as comma
257 m2_print_array_contents (struct type *type, const gdb_byte *valaddr,
258 int embedded_offset, CORE_ADDR address,
259 struct ui_file *stream, int recurse,
260 const struct value *val,
261 const struct value_print_options *options,
265 CHECK_TYPEDEF (type);
267 if (TYPE_LENGTH (type) > 0)
269 eltlen = TYPE_LENGTH (type);
270 if (options->prettyprint_arrays)
271 print_spaces_filtered (2 + 2 * recurse, stream);
272 /* For an array of chars, print with string syntax. */
274 ((TYPE_CODE (type) == TYPE_CODE_INT)
275 || ((current_language->la_language == language_m2)
276 && (TYPE_CODE (type) == TYPE_CODE_CHAR)))
277 && (options->format == 0 || options->format == 's'))
278 val_print_string (type, NULL, address, len+1, stream, options);
281 fprintf_filtered (stream, "{");
282 val_print_array_elements (type, valaddr, embedded_offset,
283 address, stream, recurse, val,
285 fprintf_filtered (stream, "}");
290 /* Decorations for Modula 2. */
292 static const struct generic_val_print_decorations m2_decorations =
302 /* See val_print for a description of the various parameters of this
303 function; they are identical. */
306 m2_val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset,
307 CORE_ADDR address, struct ui_file *stream, int recurse,
308 const struct value *original_value,
309 const struct value_print_options *options)
311 struct gdbarch *gdbarch = get_type_arch (type);
312 unsigned int i = 0; /* Number of characters printed. */
314 struct type *elttype;
319 CHECK_TYPEDEF (type);
320 switch (TYPE_CODE (type))
322 case TYPE_CODE_ARRAY:
323 if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0)
325 elttype = check_typedef (TYPE_TARGET_TYPE (type));
326 eltlen = TYPE_LENGTH (elttype);
327 len = TYPE_LENGTH (type) / eltlen;
328 if (options->prettyprint_arrays)
329 print_spaces_filtered (2 + 2 * recurse, stream);
330 /* For an array of chars, print with string syntax. */
332 ((TYPE_CODE (elttype) == TYPE_CODE_INT)
333 || ((current_language->la_language == language_m2)
334 && (TYPE_CODE (elttype) == TYPE_CODE_CHAR)))
335 && (options->format == 0 || options->format == 's'))
337 /* If requested, look for the first null char and only print
338 elements up to it. */
339 if (options->stop_print_at_null)
341 unsigned int temp_len;
343 /* Look for a NULL char. */
345 (valaddr + embedded_offset)[temp_len]
346 && temp_len < len && temp_len < options->print_max;
351 LA_PRINT_STRING (stream, TYPE_TARGET_TYPE (type),
352 valaddr + embedded_offset, len, NULL,
358 fprintf_filtered (stream, "{");
359 val_print_array_elements (type, valaddr, embedded_offset,
361 recurse, original_value,
363 fprintf_filtered (stream, "}");
367 /* Array of unspecified length: treat like pointer to first elt. */
368 print_unpacked_pointer (type, address, address, options, stream);
372 if (TYPE_CONST (type))
373 print_variable_at_address (type, valaddr + embedded_offset,
374 stream, recurse, options);
375 else if (options->format && options->format != 's')
376 val_print_scalar_formatted (type, valaddr, embedded_offset,
377 original_value, options, 0, stream);
380 addr = unpack_pointer (type, valaddr + embedded_offset);
381 print_unpacked_pointer (type, addr, address, options, stream);
385 case TYPE_CODE_UNION:
386 if (recurse && !options->unionprint)
388 fprintf_filtered (stream, "{...}");
392 case TYPE_CODE_STRUCT:
393 if (m2_is_long_set (type))
394 m2_print_long_set (type, valaddr, embedded_offset, address,
396 else if (m2_is_unbounded_array (type))
397 m2_print_unbounded_array (type, valaddr, embedded_offset,
398 address, stream, recurse, options);
400 cp_print_value_fields (type, type, valaddr, embedded_offset,
401 address, stream, recurse, original_value,
405 case TYPE_CODE_BITSTRING:
407 elttype = TYPE_INDEX_TYPE (type);
408 CHECK_TYPEDEF (elttype);
409 if (TYPE_STUB (elttype))
411 fprintf_filtered (stream, _("<incomplete type>"));
417 struct type *range = elttype;
418 LONGEST low_bound, high_bound;
420 int is_bitstring = TYPE_CODE (type) == TYPE_CODE_BITSTRING;
424 fputs_filtered ("B'", stream);
426 fputs_filtered ("{", stream);
428 i = get_discrete_bounds (range, &low_bound, &high_bound);
432 fputs_filtered (_("<error value>"), stream);
436 for (i = low_bound; i <= high_bound; i++)
438 int element = value_bit_index (type, valaddr + embedded_offset,
444 goto maybe_bad_bstring;
447 fprintf_filtered (stream, "%d", element);
451 fputs_filtered (", ", stream);
452 print_type_scalar (range, i, stream);
455 if (i + 1 <= high_bound
456 && value_bit_index (type, valaddr + embedded_offset,
461 fputs_filtered ("..", stream);
462 while (i + 1 <= high_bound
463 && value_bit_index (type,
464 valaddr + embedded_offset,
467 print_type_scalar (range, j, stream);
473 fputs_filtered ("'", stream);
475 fputs_filtered ("}", stream);
479 case TYPE_CODE_RANGE:
480 if (TYPE_LENGTH (type) == TYPE_LENGTH (TYPE_TARGET_TYPE (type)))
482 m2_val_print (TYPE_TARGET_TYPE (type), valaddr, embedded_offset,
483 address, stream, recurse, original_value, options);
486 /* FIXME: create_range_type does not set the unsigned bit in a
487 range type (I think it probably should copy it from the target
488 type), so we won't print values which are too large to
489 fit in a signed integer correctly. */
490 /* FIXME: Doesn't handle ranges of enums correctly. (Can't just
491 print with the target type, though, because the size of our type
492 and the target type might differ). */
500 case TYPE_CODE_METHOD:
502 case TYPE_CODE_ERROR:
503 case TYPE_CODE_UNDEF:
507 generic_val_print (type, valaddr, embedded_offset, address,
508 stream, recurse, original_value, options,