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Commit | Line | Data |
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373a8247 | 1 | /* Support for printing Pascal values for GDB, the GNU debugger. |
5bcca90b | 2 | |
4c38e0a4 | 3 | Copyright (C) 2000, 2001, 2003, 2005, 2006, 2007, 2008, 2009, 2010 |
4f2aea11 | 4 | Free Software Foundation, Inc. |
373a8247 PM |
5 | |
6 | This file is part of GDB. | |
7 | ||
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 | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
373a8247 PM |
11 | (at your option) any later version. |
12 | ||
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. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
373a8247 PM |
20 | |
21 | /* This file is derived from c-valprint.c */ | |
22 | ||
23 | #include "defs.h" | |
04ea0df1 | 24 | #include "gdb_obstack.h" |
373a8247 PM |
25 | #include "symtab.h" |
26 | #include "gdbtypes.h" | |
27 | #include "expression.h" | |
28 | #include "value.h" | |
29 | #include "command.h" | |
30 | #include "gdbcmd.h" | |
31 | #include "gdbcore.h" | |
32 | #include "demangle.h" | |
33 | #include "valprint.h" | |
3172dc30 | 34 | #include "typeprint.h" |
373a8247 PM |
35 | #include "language.h" |
36 | #include "target.h" | |
37 | #include "annotate.h" | |
38 | #include "p-lang.h" | |
eb43544b | 39 | #include "cp-abi.h" |
d3cbe7ef | 40 | #include "cp-support.h" |
373a8247 PM |
41 | \f |
42 | ||
43 | ||
44 | ||
45 | /* Print data of type TYPE located at VALADDR (within GDB), which came from | |
46 | the inferior at address ADDRESS, onto stdio stream STREAM according to | |
79a45b7d | 47 | OPTIONS. The data at VALADDR is in target byte order. |
373a8247 PM |
48 | |
49 | If the data are a string pointer, returns the number of string characters | |
79a45b7d | 50 | printed. */ |
373a8247 PM |
51 | |
52 | ||
53 | int | |
fc1a4b47 | 54 | pascal_val_print (struct type *type, const gdb_byte *valaddr, |
a2bd3dcd | 55 | int embedded_offset, CORE_ADDR address, |
79a45b7d TT |
56 | struct ui_file *stream, int recurse, |
57 | const struct value_print_options *options) | |
373a8247 | 58 | { |
5af949e3 | 59 | struct gdbarch *gdbarch = get_type_arch (type); |
e17a4113 | 60 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
52f0bd74 | 61 | unsigned int i = 0; /* Number of characters printed */ |
373a8247 PM |
62 | unsigned len; |
63 | struct type *elttype; | |
64 | unsigned eltlen; | |
5598ce11 | 65 | int length_pos, length_size, string_pos; |
6c7a06a3 | 66 | struct type *char_type; |
373a8247 PM |
67 | LONGEST val; |
68 | CORE_ADDR addr; | |
69 | ||
70 | CHECK_TYPEDEF (type); | |
71 | switch (TYPE_CODE (type)) | |
72 | { | |
73 | case TYPE_CODE_ARRAY: | |
74 | if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0) | |
75 | { | |
76 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
77 | eltlen = TYPE_LENGTH (elttype); | |
78 | len = TYPE_LENGTH (type) / eltlen; | |
79a45b7d | 79 | if (options->prettyprint_arrays) |
373a8247 PM |
80 | { |
81 | print_spaces_filtered (2 + 2 * recurse, stream); | |
82 | } | |
6e354e5e PM |
83 | /* If 's' format is used, try to print out as string. |
84 | If no format is given, print as string if element type | |
85 | is of TYPE_CODE_CHAR and element size is 1,2 or 4. */ | |
86 | if (options->format == 's' | |
87 | || ((eltlen == 1 || eltlen == 2 || eltlen == 4) | |
88 | && TYPE_CODE (elttype) == TYPE_CODE_CHAR | |
89 | && options->format == 0)) | |
373a8247 PM |
90 | { |
91 | /* If requested, look for the first null char and only print | |
92 | elements up to it. */ | |
79a45b7d | 93 | if (options->stop_print_at_null) |
373a8247 PM |
94 | { |
95 | unsigned int temp_len; | |
96 | ||
97 | /* Look for a NULL char. */ | |
98 | for (temp_len = 0; | |
58159490 | 99 | extract_unsigned_integer (valaddr + embedded_offset + |
e17a4113 UW |
100 | temp_len * eltlen, eltlen, |
101 | byte_order) | |
79a45b7d | 102 | && temp_len < len && temp_len < options->print_max; |
373a8247 PM |
103 | temp_len++); |
104 | len = temp_len; | |
105 | } | |
106 | ||
6c7a06a3 | 107 | LA_PRINT_STRING (stream, TYPE_TARGET_TYPE (type), |
be759fcf | 108 | valaddr + embedded_offset, len, NULL, 0, |
6c7a06a3 | 109 | options); |
373a8247 PM |
110 | i = len; |
111 | } | |
112 | else | |
113 | { | |
114 | fprintf_filtered (stream, "{"); | |
115 | /* If this is a virtual function table, print the 0th | |
116 | entry specially, and the rest of the members normally. */ | |
117 | if (pascal_object_is_vtbl_ptr_type (elttype)) | |
118 | { | |
119 | i = 1; | |
120 | fprintf_filtered (stream, "%d vtable entries", len - 1); | |
121 | } | |
122 | else | |
123 | { | |
124 | i = 0; | |
125 | } | |
126 | val_print_array_elements (type, valaddr + embedded_offset, address, stream, | |
79a45b7d | 127 | recurse, options, i); |
373a8247 PM |
128 | fprintf_filtered (stream, "}"); |
129 | } | |
130 | break; | |
131 | } | |
132 | /* Array of unspecified length: treat like pointer to first elt. */ | |
133 | addr = address; | |
134 | goto print_unpacked_pointer; | |
135 | ||
136 | case TYPE_CODE_PTR: | |
79a45b7d | 137 | if (options->format && options->format != 's') |
373a8247 | 138 | { |
79a45b7d TT |
139 | print_scalar_formatted (valaddr + embedded_offset, type, |
140 | options, 0, stream); | |
373a8247 PM |
141 | break; |
142 | } | |
79a45b7d | 143 | if (options->vtblprint && pascal_object_is_vtbl_ptr_type (type)) |
373a8247 PM |
144 | { |
145 | /* Print the unmangled name if desired. */ | |
146 | /* Print vtable entry - we only get here if we ARE using | |
147 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_STRUCT.) */ | |
b276f1bb | 148 | /* Extract the address, assume that it is unsigned. */ |
e17a4113 UW |
149 | addr = extract_unsigned_integer (valaddr + embedded_offset, |
150 | TYPE_LENGTH (type), byte_order); | |
151 | print_address_demangle (gdbarch, addr, stream, demangle); | |
373a8247 PM |
152 | break; |
153 | } | |
154 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
e13eedd5 PM |
155 | |
156 | addr = unpack_pointer (type, valaddr + embedded_offset); | |
157 | print_unpacked_pointer: | |
158 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
159 | ||
160 | if (TYPE_CODE (elttype) == TYPE_CODE_FUNC) | |
373a8247 | 161 | { |
e13eedd5 PM |
162 | /* Try to print what function it points to. */ |
163 | print_address_demangle (gdbarch, addr, stream, demangle); | |
164 | /* Return value is irrelevant except for string pointers. */ | |
165 | return (0); | |
166 | } | |
373a8247 | 167 | |
e13eedd5 PM |
168 | if (options->addressprint && options->format != 's') |
169 | { | |
170 | fputs_filtered (paddress (gdbarch, addr), stream); | |
171 | } | |
373a8247 | 172 | |
e13eedd5 PM |
173 | /* For a pointer to char or unsigned char, also print the string |
174 | pointed to, unless pointer is null. */ | |
175 | if (((TYPE_LENGTH (elttype) == 1 | |
176 | && (TYPE_CODE (elttype) == TYPE_CODE_INT | |
177 | || TYPE_CODE (elttype) == TYPE_CODE_CHAR)) | |
178 | || ((TYPE_LENGTH (elttype) == 2 || TYPE_LENGTH (elttype) == 4) | |
179 | && TYPE_CODE (elttype) == TYPE_CODE_CHAR)) | |
180 | && (options->format == 0 || options->format == 's') | |
181 | && addr != 0) | |
182 | { | |
183 | /* no wide string yet */ | |
184 | i = val_print_string (elttype, addr, -1, stream, options); | |
185 | } | |
186 | /* also for pointers to pascal strings */ | |
187 | /* Note: this is Free Pascal specific: | |
188 | as GDB does not recognize stabs pascal strings | |
189 | Pascal strings are mapped to records | |
190 | with lowercase names PM */ | |
191 | if (is_pascal_string_type (elttype, &length_pos, &length_size, | |
192 | &string_pos, &char_type, NULL) | |
193 | && addr != 0) | |
194 | { | |
195 | ULONGEST string_length; | |
196 | void *buffer; | |
197 | buffer = xmalloc (length_size); | |
198 | read_memory (addr + length_pos, buffer, length_size); | |
199 | string_length = extract_unsigned_integer (buffer, length_size, | |
200 | byte_order); | |
201 | xfree (buffer); | |
202 | i = val_print_string (char_type ,addr + string_pos, string_length, stream, options); | |
203 | } | |
204 | else if (pascal_object_is_vtbl_member (type)) | |
205 | { | |
206 | /* print vtbl's nicely */ | |
207 | CORE_ADDR vt_address = unpack_pointer (type, valaddr + embedded_offset); | |
373a8247 | 208 | |
e13eedd5 PM |
209 | struct minimal_symbol *msymbol = |
210 | lookup_minimal_symbol_by_pc (vt_address); | |
211 | if ((msymbol != NULL) | |
212 | && (vt_address == SYMBOL_VALUE_ADDRESS (msymbol))) | |
373a8247 | 213 | { |
e13eedd5 PM |
214 | fputs_filtered (" <", stream); |
215 | fputs_filtered (SYMBOL_PRINT_NAME (msymbol), stream); | |
216 | fputs_filtered (">", stream); | |
373a8247 | 217 | } |
e13eedd5 | 218 | if (vt_address && options->vtblprint) |
373a8247 | 219 | { |
e13eedd5 PM |
220 | struct value *vt_val; |
221 | struct symbol *wsym = (struct symbol *) NULL; | |
222 | struct type *wtype; | |
223 | struct block *block = (struct block *) NULL; | |
224 | int is_this_fld; | |
373a8247 | 225 | |
e13eedd5 PM |
226 | if (msymbol != NULL) |
227 | wsym = lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol), block, | |
228 | VAR_DOMAIN, &is_this_fld); | |
229 | ||
230 | if (wsym) | |
373a8247 | 231 | { |
e13eedd5 | 232 | wtype = SYMBOL_TYPE (wsym); |
373a8247 | 233 | } |
e13eedd5 | 234 | else |
373a8247 | 235 | { |
e13eedd5 PM |
236 | wtype = TYPE_TARGET_TYPE (type); |
237 | } | |
238 | vt_val = value_at (wtype, vt_address); | |
239 | common_val_print (vt_val, stream, recurse + 1, options, | |
240 | current_language); | |
241 | if (options->pretty) | |
242 | { | |
243 | fprintf_filtered (stream, "\n"); | |
244 | print_spaces_filtered (2 + 2 * recurse, stream); | |
373a8247 PM |
245 | } |
246 | } | |
373a8247 | 247 | } |
e13eedd5 PM |
248 | |
249 | /* Return number of characters printed, including the terminating | |
250 | '\0' if we reached the end. val_print_string takes care including | |
251 | the terminating '\0' if necessary. */ | |
252 | return i; | |
253 | ||
373a8247 PM |
254 | break; |
255 | ||
373a8247 PM |
256 | case TYPE_CODE_REF: |
257 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
79a45b7d | 258 | if (options->addressprint) |
373a8247 | 259 | { |
830bb937 UW |
260 | CORE_ADDR addr |
261 | = extract_typed_address (valaddr + embedded_offset, type); | |
373a8247 | 262 | fprintf_filtered (stream, "@"); |
5af949e3 | 263 | fputs_filtered (paddress (gdbarch, addr), stream); |
79a45b7d | 264 | if (options->deref_ref) |
373a8247 PM |
265 | fputs_filtered (": ", stream); |
266 | } | |
267 | /* De-reference the reference. */ | |
79a45b7d | 268 | if (options->deref_ref) |
373a8247 PM |
269 | { |
270 | if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF) | |
271 | { | |
6943961c | 272 | struct value *deref_val = |
373a8247 PM |
273 | value_at |
274 | (TYPE_TARGET_TYPE (type), | |
d8631d21 | 275 | unpack_pointer (type, valaddr + embedded_offset)); |
79a45b7d TT |
276 | common_val_print (deref_val, stream, recurse + 1, options, |
277 | current_language); | |
373a8247 PM |
278 | } |
279 | else | |
280 | fputs_filtered ("???", stream); | |
281 | } | |
282 | break; | |
283 | ||
284 | case TYPE_CODE_UNION: | |
79a45b7d | 285 | if (recurse && !options->unionprint) |
373a8247 PM |
286 | { |
287 | fprintf_filtered (stream, "{...}"); | |
288 | break; | |
289 | } | |
290 | /* Fall through. */ | |
291 | case TYPE_CODE_STRUCT: | |
79a45b7d | 292 | if (options->vtblprint && pascal_object_is_vtbl_ptr_type (type)) |
373a8247 PM |
293 | { |
294 | /* Print the unmangled name if desired. */ | |
295 | /* Print vtable entry - we only get here if NOT using | |
296 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_PTR.) */ | |
b276f1bb AC |
297 | /* Extract the address, assume that it is unsigned. */ |
298 | print_address_demangle | |
5af949e3 UW |
299 | (gdbarch, |
300 | extract_unsigned_integer (valaddr + embedded_offset + TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8, | |
e17a4113 | 301 | TYPE_LENGTH (TYPE_FIELD_TYPE (type, VTBL_FNADDR_OFFSET)), byte_order), |
b276f1bb | 302 | stream, demangle); |
373a8247 PM |
303 | } |
304 | else | |
305 | { | |
5598ce11 | 306 | if (is_pascal_string_type (type, &length_pos, &length_size, |
6c7a06a3 | 307 | &string_pos, &char_type, NULL)) |
373a8247 | 308 | { |
e17a4113 | 309 | len = extract_unsigned_integer (valaddr + embedded_offset + length_pos, length_size, byte_order); |
be759fcf PM |
310 | LA_PRINT_STRING (stream, char_type, |
311 | valaddr + embedded_offset + string_pos, | |
312 | len, NULL, 0, options); | |
373a8247 PM |
313 | } |
314 | else | |
79a45b7d TT |
315 | pascal_object_print_value_fields (type, valaddr + embedded_offset, address, stream, |
316 | recurse, options, NULL, 0); | |
373a8247 PM |
317 | } |
318 | break; | |
319 | ||
320 | case TYPE_CODE_ENUM: | |
79a45b7d | 321 | if (options->format) |
373a8247 | 322 | { |
79a45b7d TT |
323 | print_scalar_formatted (valaddr + embedded_offset, type, |
324 | options, 0, stream); | |
373a8247 PM |
325 | break; |
326 | } | |
327 | len = TYPE_NFIELDS (type); | |
328 | val = unpack_long (type, valaddr + embedded_offset); | |
329 | for (i = 0; i < len; i++) | |
330 | { | |
331 | QUIT; | |
332 | if (val == TYPE_FIELD_BITPOS (type, i)) | |
333 | { | |
334 | break; | |
335 | } | |
336 | } | |
337 | if (i < len) | |
338 | { | |
339 | fputs_filtered (TYPE_FIELD_NAME (type, i), stream); | |
340 | } | |
341 | else | |
342 | { | |
343 | print_longest (stream, 'd', 0, val); | |
344 | } | |
345 | break; | |
346 | ||
4f2aea11 | 347 | case TYPE_CODE_FLAGS: |
79a45b7d TT |
348 | if (options->format) |
349 | print_scalar_formatted (valaddr + embedded_offset, type, | |
350 | options, 0, stream); | |
4f2aea11 MK |
351 | else |
352 | val_print_type_code_flags (type, valaddr + embedded_offset, stream); | |
353 | break; | |
354 | ||
373a8247 | 355 | case TYPE_CODE_FUNC: |
79a45b7d | 356 | if (options->format) |
373a8247 | 357 | { |
79a45b7d TT |
358 | print_scalar_formatted (valaddr + embedded_offset, type, |
359 | options, 0, stream); | |
373a8247 PM |
360 | break; |
361 | } | |
362 | /* FIXME, we should consider, at least for ANSI C language, eliminating | |
363 | the distinction made between FUNCs and POINTERs to FUNCs. */ | |
364 | fprintf_filtered (stream, "{"); | |
365 | type_print (type, "", stream, -1); | |
366 | fprintf_filtered (stream, "} "); | |
367 | /* Try to print what function it points to, and its address. */ | |
5af949e3 | 368 | print_address_demangle (gdbarch, address, stream, demangle); |
373a8247 PM |
369 | break; |
370 | ||
371 | case TYPE_CODE_BOOL: | |
79a45b7d TT |
372 | if (options->format || options->output_format) |
373 | { | |
374 | struct value_print_options opts = *options; | |
375 | opts.format = (options->format ? options->format | |
376 | : options->output_format); | |
377 | print_scalar_formatted (valaddr + embedded_offset, type, | |
378 | &opts, 0, stream); | |
379 | } | |
373a8247 PM |
380 | else |
381 | { | |
382 | val = unpack_long (type, valaddr + embedded_offset); | |
383 | if (val == 0) | |
384 | fputs_filtered ("false", stream); | |
385 | else if (val == 1) | |
386 | fputs_filtered ("true", stream); | |
387 | else | |
388 | { | |
389 | fputs_filtered ("true (", stream); | |
390 | fprintf_filtered (stream, "%ld)", (long int) val); | |
391 | } | |
392 | } | |
393 | break; | |
394 | ||
395 | case TYPE_CODE_RANGE: | |
396 | /* FIXME: create_range_type does not set the unsigned bit in a | |
397 | range type (I think it probably should copy it from the target | |
398 | type), so we won't print values which are too large to | |
399 | fit in a signed integer correctly. */ | |
400 | /* FIXME: Doesn't handle ranges of enums correctly. (Can't just | |
401 | print with the target type, though, because the size of our type | |
402 | and the target type might differ). */ | |
403 | /* FALLTHROUGH */ | |
404 | ||
405 | case TYPE_CODE_INT: | |
79a45b7d | 406 | if (options->format || options->output_format) |
373a8247 | 407 | { |
79a45b7d TT |
408 | struct value_print_options opts = *options; |
409 | opts.format = (options->format ? options->format | |
410 | : options->output_format); | |
411 | print_scalar_formatted (valaddr + embedded_offset, type, | |
412 | &opts, 0, stream); | |
373a8247 PM |
413 | } |
414 | else | |
415 | { | |
416 | val_print_type_code_int (type, valaddr + embedded_offset, stream); | |
417 | } | |
418 | break; | |
419 | ||
420 | case TYPE_CODE_CHAR: | |
79a45b7d | 421 | if (options->format || options->output_format) |
373a8247 | 422 | { |
79a45b7d TT |
423 | struct value_print_options opts = *options; |
424 | opts.format = (options->format ? options->format | |
425 | : options->output_format); | |
426 | print_scalar_formatted (valaddr + embedded_offset, type, | |
427 | &opts, 0, stream); | |
373a8247 PM |
428 | } |
429 | else | |
430 | { | |
431 | val = unpack_long (type, valaddr + embedded_offset); | |
432 | if (TYPE_UNSIGNED (type)) | |
433 | fprintf_filtered (stream, "%u", (unsigned int) val); | |
434 | else | |
435 | fprintf_filtered (stream, "%d", (int) val); | |
436 | fputs_filtered (" ", stream); | |
6c7a06a3 | 437 | LA_PRINT_CHAR ((unsigned char) val, type, stream); |
373a8247 PM |
438 | } |
439 | break; | |
440 | ||
441 | case TYPE_CODE_FLT: | |
79a45b7d | 442 | if (options->format) |
373a8247 | 443 | { |
79a45b7d TT |
444 | print_scalar_formatted (valaddr + embedded_offset, type, |
445 | options, 0, stream); | |
373a8247 PM |
446 | } |
447 | else | |
448 | { | |
449 | print_floating (valaddr + embedded_offset, type, stream); | |
450 | } | |
451 | break; | |
452 | ||
453 | case TYPE_CODE_BITSTRING: | |
454 | case TYPE_CODE_SET: | |
455 | elttype = TYPE_INDEX_TYPE (type); | |
456 | CHECK_TYPEDEF (elttype); | |
74a9bb82 | 457 | if (TYPE_STUB (elttype)) |
373a8247 PM |
458 | { |
459 | fprintf_filtered (stream, "<incomplete type>"); | |
460 | gdb_flush (stream); | |
461 | break; | |
462 | } | |
463 | else | |
464 | { | |
465 | struct type *range = elttype; | |
466 | LONGEST low_bound, high_bound; | |
467 | int i; | |
468 | int is_bitstring = TYPE_CODE (type) == TYPE_CODE_BITSTRING; | |
469 | int need_comma = 0; | |
470 | ||
471 | if (is_bitstring) | |
472 | fputs_filtered ("B'", stream); | |
473 | else | |
474 | fputs_filtered ("[", stream); | |
475 | ||
476 | i = get_discrete_bounds (range, &low_bound, &high_bound); | |
477 | maybe_bad_bstring: | |
478 | if (i < 0) | |
479 | { | |
480 | fputs_filtered ("<error value>", stream); | |
481 | goto done; | |
482 | } | |
483 | ||
484 | for (i = low_bound; i <= high_bound; i++) | |
485 | { | |
486 | int element = value_bit_index (type, valaddr + embedded_offset, i); | |
487 | if (element < 0) | |
488 | { | |
489 | i = element; | |
490 | goto maybe_bad_bstring; | |
491 | } | |
492 | if (is_bitstring) | |
493 | fprintf_filtered (stream, "%d", element); | |
494 | else if (element) | |
495 | { | |
496 | if (need_comma) | |
497 | fputs_filtered (", ", stream); | |
498 | print_type_scalar (range, i, stream); | |
499 | need_comma = 1; | |
500 | ||
501 | if (i + 1 <= high_bound && value_bit_index (type, valaddr + embedded_offset, ++i)) | |
502 | { | |
503 | int j = i; | |
504 | fputs_filtered ("..", stream); | |
505 | while (i + 1 <= high_bound | |
506 | && value_bit_index (type, valaddr + embedded_offset, ++i)) | |
507 | j = i; | |
508 | print_type_scalar (range, j, stream); | |
509 | } | |
510 | } | |
511 | } | |
512 | done: | |
513 | if (is_bitstring) | |
514 | fputs_filtered ("'", stream); | |
515 | else | |
516 | fputs_filtered ("]", stream); | |
517 | } | |
518 | break; | |
519 | ||
520 | case TYPE_CODE_VOID: | |
521 | fprintf_filtered (stream, "void"); | |
522 | break; | |
523 | ||
524 | case TYPE_CODE_ERROR: | |
525 | fprintf_filtered (stream, "<error type>"); | |
526 | break; | |
527 | ||
528 | case TYPE_CODE_UNDEF: | |
529 | /* This happens (without TYPE_FLAG_STUB set) on systems which don't use | |
530 | dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar" | |
531 | and no complete type for struct foo in that file. */ | |
532 | fprintf_filtered (stream, "<incomplete type>"); | |
533 | break; | |
534 | ||
535 | default: | |
8a3fe4f8 | 536 | error (_("Invalid pascal type code %d in symbol table."), TYPE_CODE (type)); |
373a8247 PM |
537 | } |
538 | gdb_flush (stream); | |
539 | return (0); | |
540 | } | |
541 | \f | |
542 | int | |
79a45b7d TT |
543 | pascal_value_print (struct value *val, struct ui_file *stream, |
544 | const struct value_print_options *options) | |
373a8247 | 545 | { |
df407dfe | 546 | struct type *type = value_type (val); |
278582cb PM |
547 | struct value_print_options opts = *options; |
548 | ||
549 | opts.deref_ref = 1; | |
373a8247 PM |
550 | |
551 | /* If it is a pointer, indicate what it points to. | |
552 | ||
553 | Print type also if it is a reference. | |
554 | ||
555 | Object pascal: if it is a member pointer, we will take care | |
556 | of that when we print it. */ | |
b20a3440 PM |
557 | if (TYPE_CODE (type) == TYPE_CODE_PTR |
558 | || TYPE_CODE (type) == TYPE_CODE_REF) | |
373a8247 PM |
559 | { |
560 | /* Hack: remove (char *) for char strings. Their | |
561 | type is indicated by the quoted string anyway. */ | |
b20a3440 PM |
562 | if (TYPE_CODE (type) == TYPE_CODE_PTR |
563 | && TYPE_NAME (type) == NULL | |
564 | && TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL | |
6314a349 | 565 | && strcmp (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char") == 0) |
373a8247 PM |
566 | { |
567 | /* Print nothing */ | |
568 | } | |
569 | else | |
570 | { | |
571 | fprintf_filtered (stream, "("); | |
572 | type_print (type, "", stream, -1); | |
573 | fprintf_filtered (stream, ") "); | |
574 | } | |
575 | } | |
278582cb | 576 | return common_val_print (val, stream, 0, &opts, current_language); |
373a8247 PM |
577 | } |
578 | ||
579 | ||
920d2a44 AC |
580 | static void |
581 | show_pascal_static_field_print (struct ui_file *file, int from_tty, | |
582 | struct cmd_list_element *c, const char *value) | |
583 | { | |
584 | fprintf_filtered (file, _("Printing of pascal static members is %s.\n"), | |
585 | value); | |
586 | } | |
373a8247 PM |
587 | |
588 | static struct obstack dont_print_vb_obstack; | |
589 | static struct obstack dont_print_statmem_obstack; | |
590 | ||
806048c6 | 591 | static void pascal_object_print_static_field (struct value *, |
79a45b7d TT |
592 | struct ui_file *, int, |
593 | const struct value_print_options *); | |
373a8247 | 594 | |
fc1a4b47 | 595 | static void pascal_object_print_value (struct type *, const gdb_byte *, |
79a45b7d TT |
596 | CORE_ADDR, struct ui_file *, int, |
597 | const struct value_print_options *, | |
a2bd3dcd | 598 | struct type **); |
373a8247 | 599 | |
373a8247 PM |
600 | /* It was changed to this after 2.4.5. */ |
601 | const char pascal_vtbl_ptr_name[] = | |
602 | {'_', '_', 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', 't', 'y', 'p', 'e', 0}; | |
603 | ||
604 | /* Return truth value for assertion that TYPE is of the type | |
605 | "pointer to virtual function". */ | |
606 | ||
607 | int | |
fba45db2 | 608 | pascal_object_is_vtbl_ptr_type (struct type *type) |
373a8247 PM |
609 | { |
610 | char *typename = type_name_no_tag (type); | |
611 | ||
612 | return (typename != NULL | |
6314a349 | 613 | && strcmp (typename, pascal_vtbl_ptr_name) == 0); |
373a8247 PM |
614 | } |
615 | ||
616 | /* Return truth value for the assertion that TYPE is of the type | |
617 | "pointer to virtual function table". */ | |
618 | ||
619 | int | |
fba45db2 | 620 | pascal_object_is_vtbl_member (struct type *type) |
373a8247 PM |
621 | { |
622 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
623 | { | |
624 | type = TYPE_TARGET_TYPE (type); | |
625 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
626 | { | |
627 | type = TYPE_TARGET_TYPE (type); | |
628 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* if not using thunks */ | |
629 | || TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */ | |
630 | { | |
631 | /* Virtual functions tables are full of pointers | |
632 | to virtual functions. */ | |
633 | return pascal_object_is_vtbl_ptr_type (type); | |
634 | } | |
635 | } | |
636 | } | |
637 | return 0; | |
638 | } | |
639 | ||
a2bd3dcd AC |
640 | /* Mutually recursive subroutines of pascal_object_print_value and |
641 | c_val_print to print out a structure's fields: | |
642 | pascal_object_print_value_fields and pascal_object_print_value. | |
373a8247 | 643 | |
79a45b7d | 644 | TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and OPTIONS have the |
373a8247 PM |
645 | same meanings as in pascal_object_print_value and c_val_print. |
646 | ||
647 | DONT_PRINT is an array of baseclass types that we | |
648 | should not print, or zero if called from top level. */ | |
649 | ||
650 | void | |
fc1a4b47 | 651 | pascal_object_print_value_fields (struct type *type, const gdb_byte *valaddr, |
fba45db2 | 652 | CORE_ADDR address, struct ui_file *stream, |
79a45b7d TT |
653 | int recurse, |
654 | const struct value_print_options *options, | |
fba45db2 KB |
655 | struct type **dont_print_vb, |
656 | int dont_print_statmem) | |
373a8247 PM |
657 | { |
658 | int i, len, n_baseclasses; | |
373a8247 PM |
659 | char *last_dont_print = obstack_next_free (&dont_print_statmem_obstack); |
660 | ||
661 | CHECK_TYPEDEF (type); | |
662 | ||
663 | fprintf_filtered (stream, "{"); | |
664 | len = TYPE_NFIELDS (type); | |
665 | n_baseclasses = TYPE_N_BASECLASSES (type); | |
666 | ||
667 | /* Print out baseclasses such that we don't print | |
668 | duplicates of virtual baseclasses. */ | |
669 | if (n_baseclasses > 0) | |
670 | pascal_object_print_value (type, valaddr, address, stream, | |
79a45b7d | 671 | recurse + 1, options, dont_print_vb); |
373a8247 PM |
672 | |
673 | if (!len && n_baseclasses == 1) | |
674 | fprintf_filtered (stream, "<No data fields>"); | |
675 | else | |
676 | { | |
c1b6e682 | 677 | struct obstack tmp_obstack = dont_print_statmem_obstack; |
373a8247 PM |
678 | int fields_seen = 0; |
679 | ||
680 | if (dont_print_statmem == 0) | |
681 | { | |
682 | /* If we're at top level, carve out a completely fresh | |
683 | chunk of the obstack and use that until this particular | |
684 | invocation returns. */ | |
373a8247 PM |
685 | obstack_finish (&dont_print_statmem_obstack); |
686 | } | |
687 | ||
688 | for (i = n_baseclasses; i < len; i++) | |
689 | { | |
690 | /* If requested, skip printing of static fields. */ | |
79a45b7d | 691 | if (!options->pascal_static_field_print |
d6a843b5 | 692 | && field_is_static (&TYPE_FIELD (type, i))) |
373a8247 PM |
693 | continue; |
694 | if (fields_seen) | |
695 | fprintf_filtered (stream, ", "); | |
696 | else if (n_baseclasses > 0) | |
697 | { | |
79a45b7d | 698 | if (options->pretty) |
373a8247 PM |
699 | { |
700 | fprintf_filtered (stream, "\n"); | |
701 | print_spaces_filtered (2 + 2 * recurse, stream); | |
702 | fputs_filtered ("members of ", stream); | |
703 | fputs_filtered (type_name_no_tag (type), stream); | |
704 | fputs_filtered (": ", stream); | |
705 | } | |
706 | } | |
707 | fields_seen = 1; | |
708 | ||
79a45b7d | 709 | if (options->pretty) |
373a8247 PM |
710 | { |
711 | fprintf_filtered (stream, "\n"); | |
712 | print_spaces_filtered (2 + 2 * recurse, stream); | |
713 | } | |
714 | else | |
715 | { | |
716 | wrap_here (n_spaces (2 + 2 * recurse)); | |
717 | } | |
79a45b7d | 718 | if (options->inspect_it) |
373a8247 PM |
719 | { |
720 | if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR) | |
721 | fputs_filtered ("\"( ptr \"", stream); | |
722 | else | |
723 | fputs_filtered ("\"( nodef \"", stream); | |
d6a843b5 | 724 | if (field_is_static (&TYPE_FIELD (type, i))) |
373a8247 PM |
725 | fputs_filtered ("static ", stream); |
726 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
727 | language_cplus, | |
728 | DMGL_PARAMS | DMGL_ANSI); | |
729 | fputs_filtered ("\" \"", stream); | |
730 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
731 | language_cplus, | |
732 | DMGL_PARAMS | DMGL_ANSI); | |
733 | fputs_filtered ("\") \"", stream); | |
734 | } | |
735 | else | |
736 | { | |
737 | annotate_field_begin (TYPE_FIELD_TYPE (type, i)); | |
738 | ||
d6a843b5 | 739 | if (field_is_static (&TYPE_FIELD (type, i))) |
373a8247 PM |
740 | fputs_filtered ("static ", stream); |
741 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
742 | language_cplus, | |
743 | DMGL_PARAMS | DMGL_ANSI); | |
744 | annotate_field_name_end (); | |
745 | fputs_filtered (" = ", stream); | |
746 | annotate_field_value (); | |
747 | } | |
748 | ||
d6a843b5 JK |
749 | if (!field_is_static (&TYPE_FIELD (type, i)) |
750 | && TYPE_FIELD_PACKED (type, i)) | |
373a8247 | 751 | { |
6943961c | 752 | struct value *v; |
373a8247 PM |
753 | |
754 | /* Bitfields require special handling, especially due to byte | |
755 | order problems. */ | |
756 | if (TYPE_FIELD_IGNORE (type, i)) | |
757 | { | |
758 | fputs_filtered ("<optimized out or zero length>", stream); | |
759 | } | |
760 | else | |
761 | { | |
79a45b7d | 762 | struct value_print_options opts = *options; |
373a8247 PM |
763 | v = value_from_longest (TYPE_FIELD_TYPE (type, i), |
764 | unpack_field_as_long (type, valaddr, i)); | |
765 | ||
79a45b7d TT |
766 | opts.deref_ref = 0; |
767 | common_val_print (v, stream, recurse + 1, &opts, | |
768 | current_language); | |
373a8247 PM |
769 | } |
770 | } | |
771 | else | |
772 | { | |
773 | if (TYPE_FIELD_IGNORE (type, i)) | |
774 | { | |
775 | fputs_filtered ("<optimized out or zero length>", stream); | |
776 | } | |
d6a843b5 | 777 | else if (field_is_static (&TYPE_FIELD (type, i))) |
373a8247 | 778 | { |
6943961c AC |
779 | /* struct value *v = value_static_field (type, i); v4.17 specific */ |
780 | struct value *v; | |
373a8247 PM |
781 | v = value_from_longest (TYPE_FIELD_TYPE (type, i), |
782 | unpack_field_as_long (type, valaddr, i)); | |
783 | ||
784 | if (v == NULL) | |
785 | fputs_filtered ("<optimized out>", stream); | |
786 | else | |
79a45b7d TT |
787 | pascal_object_print_static_field (v, stream, recurse + 1, |
788 | options); | |
373a8247 PM |
789 | } |
790 | else | |
791 | { | |
79a45b7d TT |
792 | struct value_print_options opts = *options; |
793 | opts.deref_ref = 0; | |
373a8247 PM |
794 | /* val_print (TYPE_FIELD_TYPE (type, i), |
795 | valaddr + TYPE_FIELD_BITPOS (type, i) / 8, | |
796 | address + TYPE_FIELD_BITPOS (type, i) / 8, 0, | |
797 | stream, format, 0, recurse + 1, pretty); */ | |
798 | val_print (TYPE_FIELD_TYPE (type, i), | |
799 | valaddr, TYPE_FIELD_BITPOS (type, i) / 8, | |
800 | address + TYPE_FIELD_BITPOS (type, i) / 8, | |
79a45b7d | 801 | stream, recurse + 1, &opts, |
d8ca156b | 802 | current_language); |
373a8247 PM |
803 | } |
804 | } | |
805 | annotate_field_end (); | |
806 | } | |
807 | ||
808 | if (dont_print_statmem == 0) | |
809 | { | |
810 | /* Free the space used to deal with the printing | |
811 | of the members from top level. */ | |
812 | obstack_free (&dont_print_statmem_obstack, last_dont_print); | |
813 | dont_print_statmem_obstack = tmp_obstack; | |
814 | } | |
815 | ||
79a45b7d | 816 | if (options->pretty) |
373a8247 PM |
817 | { |
818 | fprintf_filtered (stream, "\n"); | |
819 | print_spaces_filtered (2 * recurse, stream); | |
820 | } | |
821 | } | |
822 | fprintf_filtered (stream, "}"); | |
823 | } | |
824 | ||
825 | /* Special val_print routine to avoid printing multiple copies of virtual | |
826 | baseclasses. */ | |
827 | ||
7080f20f | 828 | static void |
fc1a4b47 | 829 | pascal_object_print_value (struct type *type, const gdb_byte *valaddr, |
a2bd3dcd | 830 | CORE_ADDR address, struct ui_file *stream, |
79a45b7d TT |
831 | int recurse, |
832 | const struct value_print_options *options, | |
fba45db2 | 833 | struct type **dont_print_vb) |
373a8247 | 834 | { |
373a8247 PM |
835 | struct type **last_dont_print |
836 | = (struct type **) obstack_next_free (&dont_print_vb_obstack); | |
c1b6e682 | 837 | struct obstack tmp_obstack = dont_print_vb_obstack; |
373a8247 PM |
838 | int i, n_baseclasses = TYPE_N_BASECLASSES (type); |
839 | ||
840 | if (dont_print_vb == 0) | |
841 | { | |
842 | /* If we're at top level, carve out a completely fresh | |
843 | chunk of the obstack and use that until this particular | |
844 | invocation returns. */ | |
373a8247 PM |
845 | /* Bump up the high-water mark. Now alpha is omega. */ |
846 | obstack_finish (&dont_print_vb_obstack); | |
847 | } | |
848 | ||
849 | for (i = 0; i < n_baseclasses; i++) | |
850 | { | |
851 | int boffset; | |
852 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); | |
4a52dc15 | 853 | char *basename = type_name_no_tag (baseclass); |
fc1a4b47 | 854 | const gdb_byte *base_valaddr; |
373a8247 PM |
855 | |
856 | if (BASETYPE_VIA_VIRTUAL (type, i)) | |
857 | { | |
858 | struct type **first_dont_print | |
859 | = (struct type **) obstack_base (&dont_print_vb_obstack); | |
860 | ||
861 | int j = (struct type **) obstack_next_free (&dont_print_vb_obstack) | |
862 | - first_dont_print; | |
863 | ||
864 | while (--j >= 0) | |
865 | if (baseclass == first_dont_print[j]) | |
866 | goto flush_it; | |
867 | ||
868 | obstack_ptr_grow (&dont_print_vb_obstack, baseclass); | |
869 | } | |
870 | ||
871 | boffset = baseclass_offset (type, i, valaddr, address); | |
872 | ||
79a45b7d | 873 | if (options->pretty) |
373a8247 PM |
874 | { |
875 | fprintf_filtered (stream, "\n"); | |
876 | print_spaces_filtered (2 * recurse, stream); | |
877 | } | |
878 | fputs_filtered ("<", stream); | |
879 | /* Not sure what the best notation is in the case where there is no | |
880 | baseclass name. */ | |
881 | ||
882 | fputs_filtered (basename ? basename : "", stream); | |
883 | fputs_filtered ("> = ", stream); | |
884 | ||
885 | /* The virtual base class pointer might have been clobbered by the | |
886 | user program. Make sure that it still points to a valid memory | |
887 | location. */ | |
888 | ||
889 | if (boffset != -1 && (boffset < 0 || boffset >= TYPE_LENGTH (type))) | |
890 | { | |
34c0bd93 | 891 | /* FIXME (alloc): not safe is baseclass is really really big. */ |
fc1a4b47 | 892 | gdb_byte *buf = alloca (TYPE_LENGTH (baseclass)); |
a2bd3dcd AC |
893 | base_valaddr = buf; |
894 | if (target_read_memory (address + boffset, buf, | |
373a8247 PM |
895 | TYPE_LENGTH (baseclass)) != 0) |
896 | boffset = -1; | |
897 | } | |
898 | else | |
899 | base_valaddr = valaddr + boffset; | |
900 | ||
901 | if (boffset == -1) | |
902 | fprintf_filtered (stream, "<invalid address>"); | |
903 | else | |
904 | pascal_object_print_value_fields (baseclass, base_valaddr, address + boffset, | |
79a45b7d | 905 | stream, recurse, options, |
373a8247 PM |
906 | (struct type **) obstack_base (&dont_print_vb_obstack), |
907 | 0); | |
908 | fputs_filtered (", ", stream); | |
909 | ||
910 | flush_it: | |
911 | ; | |
912 | } | |
913 | ||
914 | if (dont_print_vb == 0) | |
915 | { | |
916 | /* Free the space used to deal with the printing | |
917 | of this type from top level. */ | |
918 | obstack_free (&dont_print_vb_obstack, last_dont_print); | |
919 | /* Reset watermark so that we can continue protecting | |
920 | ourselves from whatever we were protecting ourselves. */ | |
921 | dont_print_vb_obstack = tmp_obstack; | |
922 | } | |
923 | } | |
924 | ||
925 | /* Print value of a static member. | |
926 | To avoid infinite recursion when printing a class that contains | |
927 | a static instance of the class, we keep the addresses of all printed | |
928 | static member classes in an obstack and refuse to print them more | |
929 | than once. | |
930 | ||
79a45b7d | 931 | VAL contains the value to print, STREAM, RECURSE, and OPTIONS |
373a8247 PM |
932 | have the same meanings as in c_val_print. */ |
933 | ||
934 | static void | |
806048c6 | 935 | pascal_object_print_static_field (struct value *val, |
79a45b7d TT |
936 | struct ui_file *stream, |
937 | int recurse, | |
938 | const struct value_print_options *options) | |
373a8247 | 939 | { |
806048c6 | 940 | struct type *type = value_type (val); |
79a45b7d | 941 | struct value_print_options opts; |
806048c6 | 942 | |
373a8247 PM |
943 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
944 | { | |
42ae5230 | 945 | CORE_ADDR *first_dont_print, addr; |
373a8247 PM |
946 | int i; |
947 | ||
948 | first_dont_print | |
949 | = (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack); | |
950 | i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack) | |
951 | - first_dont_print; | |
952 | ||
953 | while (--i >= 0) | |
954 | { | |
42ae5230 | 955 | if (value_address (val) == first_dont_print[i]) |
373a8247 PM |
956 | { |
957 | fputs_filtered ("<same as static member of an already seen type>", | |
958 | stream); | |
959 | return; | |
960 | } | |
961 | } | |
962 | ||
42ae5230 TT |
963 | addr = value_address (val); |
964 | obstack_grow (&dont_print_statmem_obstack, (char *) &addr, | |
373a8247 PM |
965 | sizeof (CORE_ADDR)); |
966 | ||
967 | CHECK_TYPEDEF (type); | |
42ae5230 | 968 | pascal_object_print_value_fields (type, value_contents (val), addr, |
79a45b7d | 969 | stream, recurse, options, NULL, 1); |
373a8247 PM |
970 | return; |
971 | } | |
79a45b7d TT |
972 | |
973 | opts = *options; | |
974 | opts.deref_ref = 0; | |
975 | common_val_print (val, stream, recurse, &opts, current_language); | |
373a8247 PM |
976 | } |
977 | ||
b9362cc7 | 978 | extern initialize_file_ftype _initialize_pascal_valprint; /* -Wmissing-prototypes */ |
373a8247 PM |
979 | |
980 | void | |
fba45db2 | 981 | _initialize_pascal_valprint (void) |
373a8247 | 982 | { |
5bf193a2 | 983 | add_setshow_boolean_cmd ("pascal_static-members", class_support, |
79a45b7d | 984 | &user_print_options.pascal_static_field_print, _("\ |
5bf193a2 AC |
985 | Set printing of pascal static members."), _("\ |
986 | Show printing of pascal static members."), NULL, | |
987 | NULL, | |
920d2a44 | 988 | show_pascal_static_field_print, |
5bf193a2 | 989 | &setprintlist, &showprintlist); |
373a8247 | 990 | } |