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373a8247 | 1 | /* Support for printing Pascal values for GDB, the GNU debugger. |
5bcca90b AC |
2 | |
3 | Copyright 2000, 2001, 2003, 2005 Free Software Foundation, Inc. | |
373a8247 PM |
4 | |
5 | This file is part of GDB. | |
6 | ||
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 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
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. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
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" |
373a8247 PM |
40 | \f |
41 | ||
42 | ||
43 | ||
44 | /* Print data of type TYPE located at VALADDR (within GDB), which came from | |
45 | the inferior at address ADDRESS, onto stdio stream STREAM according to | |
46 | FORMAT (a letter or 0 for natural format). The data at VALADDR is in | |
47 | target byte order. | |
48 | ||
49 | If the data are a string pointer, returns the number of string characters | |
50 | printed. | |
51 | ||
52 | If DEREF_REF is nonzero, then dereference references, otherwise just print | |
53 | them like pointers. | |
54 | ||
55 | The PRETTY parameter controls prettyprinting. */ | |
56 | ||
57 | ||
58 | int | |
fba45db2 KB |
59 | pascal_val_print (struct type *type, char *valaddr, int embedded_offset, |
60 | CORE_ADDR address, struct ui_file *stream, int format, | |
61 | int deref_ref, int recurse, enum val_prettyprint pretty) | |
373a8247 | 62 | { |
52f0bd74 | 63 | unsigned int i = 0; /* Number of characters printed */ |
373a8247 PM |
64 | unsigned len; |
65 | struct type *elttype; | |
66 | unsigned eltlen; | |
5598ce11 PM |
67 | int length_pos, length_size, string_pos; |
68 | int char_size; | |
373a8247 PM |
69 | LONGEST val; |
70 | CORE_ADDR addr; | |
71 | ||
72 | CHECK_TYPEDEF (type); | |
73 | switch (TYPE_CODE (type)) | |
74 | { | |
75 | case TYPE_CODE_ARRAY: | |
76 | if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0) | |
77 | { | |
78 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
79 | eltlen = TYPE_LENGTH (elttype); | |
80 | len = TYPE_LENGTH (type) / eltlen; | |
81 | if (prettyprint_arrays) | |
82 | { | |
83 | print_spaces_filtered (2 + 2 * recurse, stream); | |
84 | } | |
85 | /* For an array of chars, print with string syntax. */ | |
86 | if (eltlen == 1 && | |
87 | ((TYPE_CODE (elttype) == TYPE_CODE_INT) | |
88 | || ((current_language->la_language == language_m2) | |
89 | && (TYPE_CODE (elttype) == TYPE_CODE_CHAR))) | |
90 | && (format == 0 || format == 's')) | |
91 | { | |
92 | /* If requested, look for the first null char and only print | |
93 | elements up to it. */ | |
94 | if (stop_print_at_null) | |
95 | { | |
96 | unsigned int temp_len; | |
97 | ||
98 | /* Look for a NULL char. */ | |
99 | for (temp_len = 0; | |
100 | (valaddr + embedded_offset)[temp_len] | |
101 | && temp_len < len && temp_len < print_max; | |
102 | temp_len++); | |
103 | len = temp_len; | |
104 | } | |
105 | ||
106 | LA_PRINT_STRING (stream, valaddr + embedded_offset, len, 1, 0); | |
107 | i = len; | |
108 | } | |
109 | else | |
110 | { | |
111 | fprintf_filtered (stream, "{"); | |
112 | /* If this is a virtual function table, print the 0th | |
113 | entry specially, and the rest of the members normally. */ | |
114 | if (pascal_object_is_vtbl_ptr_type (elttype)) | |
115 | { | |
116 | i = 1; | |
117 | fprintf_filtered (stream, "%d vtable entries", len - 1); | |
118 | } | |
119 | else | |
120 | { | |
121 | i = 0; | |
122 | } | |
123 | val_print_array_elements (type, valaddr + embedded_offset, address, stream, | |
124 | format, deref_ref, recurse, pretty, i); | |
125 | fprintf_filtered (stream, "}"); | |
126 | } | |
127 | break; | |
128 | } | |
129 | /* Array of unspecified length: treat like pointer to first elt. */ | |
130 | addr = address; | |
131 | goto print_unpacked_pointer; | |
132 | ||
133 | case TYPE_CODE_PTR: | |
134 | if (format && format != 's') | |
135 | { | |
136 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
137 | break; | |
138 | } | |
139 | if (vtblprint && pascal_object_is_vtbl_ptr_type (type)) | |
140 | { | |
141 | /* Print the unmangled name if desired. */ | |
142 | /* Print vtable entry - we only get here if we ARE using | |
143 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_STRUCT.) */ | |
b276f1bb AC |
144 | /* Extract the address, assume that it is unsigned. */ |
145 | print_address_demangle (extract_unsigned_integer (valaddr + embedded_offset, TYPE_LENGTH (type)), | |
373a8247 PM |
146 | stream, demangle); |
147 | break; | |
148 | } | |
149 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
150 | if (TYPE_CODE (elttype) == TYPE_CODE_METHOD) | |
151 | { | |
152 | pascal_object_print_class_method (valaddr + embedded_offset, type, stream); | |
153 | } | |
154 | else if (TYPE_CODE (elttype) == TYPE_CODE_MEMBER) | |
155 | { | |
156 | pascal_object_print_class_member (valaddr + embedded_offset, | |
157 | TYPE_DOMAIN_TYPE (TYPE_TARGET_TYPE (type)), | |
158 | stream, "&"); | |
159 | } | |
160 | else | |
161 | { | |
162 | addr = unpack_pointer (type, valaddr + embedded_offset); | |
163 | print_unpacked_pointer: | |
164 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
165 | ||
166 | if (TYPE_CODE (elttype) == TYPE_CODE_FUNC) | |
167 | { | |
168 | /* Try to print what function it points to. */ | |
169 | print_address_demangle (addr, stream, demangle); | |
170 | /* Return value is irrelevant except for string pointers. */ | |
171 | return (0); | |
172 | } | |
173 | ||
174 | if (addressprint && format != 's') | |
175 | { | |
176 | print_address_numeric (addr, 1, stream); | |
177 | } | |
178 | ||
179 | /* For a pointer to char or unsigned char, also print the string | |
180 | pointed to, unless pointer is null. */ | |
181 | if (TYPE_LENGTH (elttype) == 1 | |
182 | && TYPE_CODE (elttype) == TYPE_CODE_INT | |
183 | && (format == 0 || format == 's') | |
184 | && addr != 0) | |
185 | { | |
186 | /* no wide string yet */ | |
187 | i = val_print_string (addr, -1, 1, stream); | |
188 | } | |
189 | /* also for pointers to pascal strings */ | |
190 | /* Note: this is Free Pascal specific: | |
191 | as GDB does not recognize stabs pascal strings | |
192 | Pascal strings are mapped to records | |
193 | with lowercase names PM */ | |
e2625b33 PM |
194 | if (is_pascal_string_type (elttype, &length_pos, &length_size, |
195 | &string_pos, &char_size, NULL) | |
5598ce11 | 196 | && addr != 0) |
373a8247 | 197 | { |
5598ce11 PM |
198 | ULONGEST string_length; |
199 | void *buffer; | |
200 | buffer = xmalloc (length_size); | |
201 | read_memory (addr + length_pos, buffer, length_size); | |
202 | string_length = extract_unsigned_integer (buffer, length_size); | |
203 | xfree (buffer); | |
204 | i = val_print_string (addr + string_pos, string_length, char_size, stream); | |
373a8247 PM |
205 | } |
206 | else if (pascal_object_is_vtbl_member (type)) | |
207 | { | |
208 | /* print vtbl's nicely */ | |
209 | CORE_ADDR vt_address = unpack_pointer (type, valaddr + embedded_offset); | |
210 | ||
211 | struct minimal_symbol *msymbol = | |
212 | lookup_minimal_symbol_by_pc (vt_address); | |
5598ce11 PM |
213 | if ((msymbol != NULL) |
214 | && (vt_address == SYMBOL_VALUE_ADDRESS (msymbol))) | |
373a8247 PM |
215 | { |
216 | fputs_filtered (" <", stream); | |
de5ad195 | 217 | fputs_filtered (SYMBOL_PRINT_NAME (msymbol), stream); |
373a8247 PM |
218 | fputs_filtered (">", stream); |
219 | } | |
220 | if (vt_address && vtblprint) | |
221 | { | |
6943961c | 222 | struct value *vt_val; |
373a8247 PM |
223 | struct symbol *wsym = (struct symbol *) NULL; |
224 | struct type *wtype; | |
373a8247 PM |
225 | struct block *block = (struct block *) NULL; |
226 | int is_this_fld; | |
227 | ||
228 | if (msymbol != NULL) | |
22abf04a | 229 | wsym = lookup_symbol (DEPRECATED_SYMBOL_NAME (msymbol), block, |
cdef89d0 | 230 | VAR_DOMAIN, &is_this_fld, NULL); |
373a8247 PM |
231 | |
232 | if (wsym) | |
233 | { | |
234 | wtype = SYMBOL_TYPE (wsym); | |
235 | } | |
236 | else | |
237 | { | |
238 | wtype = TYPE_TARGET_TYPE (type); | |
239 | } | |
00a4c844 | 240 | vt_val = value_at (wtype, vt_address); |
df407dfe | 241 | val_print (value_type (vt_val), VALUE_CONTENTS (vt_val), 0, |
373a8247 PM |
242 | VALUE_ADDRESS (vt_val), stream, format, |
243 | deref_ref, recurse + 1, pretty); | |
244 | if (pretty) | |
245 | { | |
246 | fprintf_filtered (stream, "\n"); | |
247 | print_spaces_filtered (2 + 2 * recurse, stream); | |
248 | } | |
249 | } | |
250 | } | |
251 | ||
252 | /* Return number of characters printed, including the terminating | |
253 | '\0' if we reached the end. val_print_string takes care including | |
254 | the terminating '\0' if necessary. */ | |
255 | return i; | |
256 | } | |
257 | break; | |
258 | ||
259 | case TYPE_CODE_MEMBER: | |
260 | error ("not implemented: member type in pascal_val_print"); | |
261 | break; | |
262 | ||
263 | case TYPE_CODE_REF: | |
264 | elttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
265 | if (TYPE_CODE (elttype) == TYPE_CODE_MEMBER) | |
266 | { | |
267 | pascal_object_print_class_member (valaddr + embedded_offset, | |
268 | TYPE_DOMAIN_TYPE (elttype), | |
269 | stream, ""); | |
270 | break; | |
271 | } | |
272 | if (addressprint) | |
273 | { | |
274 | fprintf_filtered (stream, "@"); | |
b276f1bb | 275 | /* Extract the address, assume that it is unsigned. */ |
373a8247 | 276 | print_address_numeric |
b276f1bb AC |
277 | (extract_unsigned_integer (valaddr + embedded_offset, |
278 | TARGET_PTR_BIT / HOST_CHAR_BIT), | |
279 | 1, stream); | |
373a8247 PM |
280 | if (deref_ref) |
281 | fputs_filtered (": ", stream); | |
282 | } | |
283 | /* De-reference the reference. */ | |
284 | if (deref_ref) | |
285 | { | |
286 | if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF) | |
287 | { | |
6943961c | 288 | struct value *deref_val = |
373a8247 PM |
289 | value_at |
290 | (TYPE_TARGET_TYPE (type), | |
291 | unpack_pointer (lookup_pointer_type (builtin_type_void), | |
00a4c844 | 292 | valaddr + embedded_offset)); |
df407dfe | 293 | val_print (value_type (deref_val), |
373a8247 PM |
294 | VALUE_CONTENTS (deref_val), 0, |
295 | VALUE_ADDRESS (deref_val), stream, format, | |
296 | deref_ref, recurse + 1, pretty); | |
297 | } | |
298 | else | |
299 | fputs_filtered ("???", stream); | |
300 | } | |
301 | break; | |
302 | ||
303 | case TYPE_CODE_UNION: | |
304 | if (recurse && !unionprint) | |
305 | { | |
306 | fprintf_filtered (stream, "{...}"); | |
307 | break; | |
308 | } | |
309 | /* Fall through. */ | |
310 | case TYPE_CODE_STRUCT: | |
311 | if (vtblprint && pascal_object_is_vtbl_ptr_type (type)) | |
312 | { | |
313 | /* Print the unmangled name if desired. */ | |
314 | /* Print vtable entry - we only get here if NOT using | |
315 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_PTR.) */ | |
b276f1bb AC |
316 | /* Extract the address, assume that it is unsigned. */ |
317 | print_address_demangle | |
318 | (extract_unsigned_integer (valaddr + embedded_offset + TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8, | |
319 | TYPE_LENGTH (TYPE_FIELD_TYPE (type, VTBL_FNADDR_OFFSET))), | |
320 | stream, demangle); | |
373a8247 PM |
321 | } |
322 | else | |
323 | { | |
5598ce11 | 324 | if (is_pascal_string_type (type, &length_pos, &length_size, |
e2625b33 | 325 | &string_pos, &char_size, NULL)) |
373a8247 | 326 | { |
5598ce11 PM |
327 | len = extract_unsigned_integer (valaddr + embedded_offset + length_pos, length_size); |
328 | LA_PRINT_STRING (stream, valaddr + embedded_offset + string_pos, len, char_size, 0); | |
373a8247 PM |
329 | } |
330 | else | |
331 | pascal_object_print_value_fields (type, valaddr + embedded_offset, address, stream, format, | |
332 | recurse, pretty, NULL, 0); | |
333 | } | |
334 | break; | |
335 | ||
336 | case TYPE_CODE_ENUM: | |
337 | if (format) | |
338 | { | |
339 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
340 | break; | |
341 | } | |
342 | len = TYPE_NFIELDS (type); | |
343 | val = unpack_long (type, valaddr + embedded_offset); | |
344 | for (i = 0; i < len; i++) | |
345 | { | |
346 | QUIT; | |
347 | if (val == TYPE_FIELD_BITPOS (type, i)) | |
348 | { | |
349 | break; | |
350 | } | |
351 | } | |
352 | if (i < len) | |
353 | { | |
354 | fputs_filtered (TYPE_FIELD_NAME (type, i), stream); | |
355 | } | |
356 | else | |
357 | { | |
358 | print_longest (stream, 'd', 0, val); | |
359 | } | |
360 | break; | |
361 | ||
362 | case TYPE_CODE_FUNC: | |
363 | if (format) | |
364 | { | |
365 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
366 | break; | |
367 | } | |
368 | /* FIXME, we should consider, at least for ANSI C language, eliminating | |
369 | the distinction made between FUNCs and POINTERs to FUNCs. */ | |
370 | fprintf_filtered (stream, "{"); | |
371 | type_print (type, "", stream, -1); | |
372 | fprintf_filtered (stream, "} "); | |
373 | /* Try to print what function it points to, and its address. */ | |
374 | print_address_demangle (address, stream, demangle); | |
375 | break; | |
376 | ||
377 | case TYPE_CODE_BOOL: | |
378 | format = format ? format : output_format; | |
379 | if (format) | |
380 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
381 | else | |
382 | { | |
383 | val = unpack_long (type, valaddr + embedded_offset); | |
384 | if (val == 0) | |
385 | fputs_filtered ("false", stream); | |
386 | else if (val == 1) | |
387 | fputs_filtered ("true", stream); | |
388 | else | |
389 | { | |
390 | fputs_filtered ("true (", stream); | |
391 | fprintf_filtered (stream, "%ld)", (long int) val); | |
392 | } | |
393 | } | |
394 | break; | |
395 | ||
396 | case TYPE_CODE_RANGE: | |
397 | /* FIXME: create_range_type does not set the unsigned bit in a | |
398 | range type (I think it probably should copy it from the target | |
399 | type), so we won't print values which are too large to | |
400 | fit in a signed integer correctly. */ | |
401 | /* FIXME: Doesn't handle ranges of enums correctly. (Can't just | |
402 | print with the target type, though, because the size of our type | |
403 | and the target type might differ). */ | |
404 | /* FALLTHROUGH */ | |
405 | ||
406 | case TYPE_CODE_INT: | |
407 | format = format ? format : output_format; | |
408 | if (format) | |
409 | { | |
410 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
411 | } | |
412 | else | |
413 | { | |
414 | val_print_type_code_int (type, valaddr + embedded_offset, stream); | |
415 | } | |
416 | break; | |
417 | ||
418 | case TYPE_CODE_CHAR: | |
419 | format = format ? format : output_format; | |
420 | if (format) | |
421 | { | |
422 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
423 | } | |
424 | else | |
425 | { | |
426 | val = unpack_long (type, valaddr + embedded_offset); | |
427 | if (TYPE_UNSIGNED (type)) | |
428 | fprintf_filtered (stream, "%u", (unsigned int) val); | |
429 | else | |
430 | fprintf_filtered (stream, "%d", (int) val); | |
431 | fputs_filtered (" ", stream); | |
432 | LA_PRINT_CHAR ((unsigned char) val, stream); | |
433 | } | |
434 | break; | |
435 | ||
436 | case TYPE_CODE_FLT: | |
437 | if (format) | |
438 | { | |
439 | print_scalar_formatted (valaddr + embedded_offset, type, format, 0, stream); | |
440 | } | |
441 | else | |
442 | { | |
443 | print_floating (valaddr + embedded_offset, type, stream); | |
444 | } | |
445 | break; | |
446 | ||
447 | case TYPE_CODE_BITSTRING: | |
448 | case TYPE_CODE_SET: | |
449 | elttype = TYPE_INDEX_TYPE (type); | |
450 | CHECK_TYPEDEF (elttype); | |
74a9bb82 | 451 | if (TYPE_STUB (elttype)) |
373a8247 PM |
452 | { |
453 | fprintf_filtered (stream, "<incomplete type>"); | |
454 | gdb_flush (stream); | |
455 | break; | |
456 | } | |
457 | else | |
458 | { | |
459 | struct type *range = elttype; | |
460 | LONGEST low_bound, high_bound; | |
461 | int i; | |
462 | int is_bitstring = TYPE_CODE (type) == TYPE_CODE_BITSTRING; | |
463 | int need_comma = 0; | |
464 | ||
465 | if (is_bitstring) | |
466 | fputs_filtered ("B'", stream); | |
467 | else | |
468 | fputs_filtered ("[", stream); | |
469 | ||
470 | i = get_discrete_bounds (range, &low_bound, &high_bound); | |
471 | maybe_bad_bstring: | |
472 | if (i < 0) | |
473 | { | |
474 | fputs_filtered ("<error value>", stream); | |
475 | goto done; | |
476 | } | |
477 | ||
478 | for (i = low_bound; i <= high_bound; i++) | |
479 | { | |
480 | int element = value_bit_index (type, valaddr + embedded_offset, i); | |
481 | if (element < 0) | |
482 | { | |
483 | i = element; | |
484 | goto maybe_bad_bstring; | |
485 | } | |
486 | if (is_bitstring) | |
487 | fprintf_filtered (stream, "%d", element); | |
488 | else if (element) | |
489 | { | |
490 | if (need_comma) | |
491 | fputs_filtered (", ", stream); | |
492 | print_type_scalar (range, i, stream); | |
493 | need_comma = 1; | |
494 | ||
495 | if (i + 1 <= high_bound && value_bit_index (type, valaddr + embedded_offset, ++i)) | |
496 | { | |
497 | int j = i; | |
498 | fputs_filtered ("..", stream); | |
499 | while (i + 1 <= high_bound | |
500 | && value_bit_index (type, valaddr + embedded_offset, ++i)) | |
501 | j = i; | |
502 | print_type_scalar (range, j, stream); | |
503 | } | |
504 | } | |
505 | } | |
506 | done: | |
507 | if (is_bitstring) | |
508 | fputs_filtered ("'", stream); | |
509 | else | |
510 | fputs_filtered ("]", stream); | |
511 | } | |
512 | break; | |
513 | ||
514 | case TYPE_CODE_VOID: | |
515 | fprintf_filtered (stream, "void"); | |
516 | break; | |
517 | ||
518 | case TYPE_CODE_ERROR: | |
519 | fprintf_filtered (stream, "<error type>"); | |
520 | break; | |
521 | ||
522 | case TYPE_CODE_UNDEF: | |
523 | /* This happens (without TYPE_FLAG_STUB set) on systems which don't use | |
524 | dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar" | |
525 | and no complete type for struct foo in that file. */ | |
526 | fprintf_filtered (stream, "<incomplete type>"); | |
527 | break; | |
528 | ||
529 | default: | |
530 | error ("Invalid pascal type code %d in symbol table.", TYPE_CODE (type)); | |
531 | } | |
532 | gdb_flush (stream); | |
533 | return (0); | |
534 | } | |
535 | \f | |
536 | int | |
6943961c | 537 | pascal_value_print (struct value *val, struct ui_file *stream, int format, |
fba45db2 | 538 | enum val_prettyprint pretty) |
373a8247 | 539 | { |
df407dfe | 540 | struct type *type = value_type (val); |
373a8247 PM |
541 | |
542 | /* If it is a pointer, indicate what it points to. | |
543 | ||
544 | Print type also if it is a reference. | |
545 | ||
546 | Object pascal: if it is a member pointer, we will take care | |
547 | of that when we print it. */ | |
548 | if (TYPE_CODE (type) == TYPE_CODE_PTR || | |
549 | TYPE_CODE (type) == TYPE_CODE_REF) | |
550 | { | |
551 | /* Hack: remove (char *) for char strings. Their | |
552 | type is indicated by the quoted string anyway. */ | |
553 | if (TYPE_CODE (type) == TYPE_CODE_PTR && | |
554 | TYPE_NAME (type) == NULL && | |
6314a349 AC |
555 | TYPE_NAME (TYPE_TARGET_TYPE (type)) != NULL |
556 | && strcmp (TYPE_NAME (TYPE_TARGET_TYPE (type)), "char") == 0) | |
373a8247 PM |
557 | { |
558 | /* Print nothing */ | |
559 | } | |
560 | else | |
561 | { | |
562 | fprintf_filtered (stream, "("); | |
563 | type_print (type, "", stream, -1); | |
564 | fprintf_filtered (stream, ") "); | |
565 | } | |
566 | } | |
567 | return val_print (type, VALUE_CONTENTS (val), VALUE_EMBEDDED_OFFSET (val), | |
df407dfe | 568 | VALUE_ADDRESS (val) + value_offset (val), |
373a8247 PM |
569 | stream, format, 1, 0, pretty); |
570 | } | |
571 | ||
572 | ||
573 | /****************************************************************************** | |
574 | Inserted from cp-valprint | |
575 | ******************************************************************************/ | |
576 | ||
577 | extern int vtblprint; /* Controls printing of vtbl's */ | |
578 | extern int objectprint; /* Controls looking up an object's derived type | |
579 | using what we find in its vtables. */ | |
580 | static int pascal_static_field_print; /* Controls printing of static fields. */ | |
581 | ||
582 | static struct obstack dont_print_vb_obstack; | |
583 | static struct obstack dont_print_statmem_obstack; | |
584 | ||
6943961c AC |
585 | static void pascal_object_print_static_field (struct type *, struct value *, |
586 | struct ui_file *, int, int, | |
587 | enum val_prettyprint); | |
373a8247 PM |
588 | |
589 | static void | |
590 | pascal_object_print_value (struct type *, char *, CORE_ADDR, struct ui_file *, | |
591 | int, int, enum val_prettyprint, struct type **); | |
592 | ||
593 | void | |
5bcca90b | 594 | pascal_object_print_class_method (const bfd_byte *valaddr, struct type *type, |
fba45db2 | 595 | struct ui_file *stream) |
373a8247 PM |
596 | { |
597 | struct type *domain; | |
598 | struct fn_field *f = NULL; | |
599 | int j = 0; | |
600 | int len2; | |
601 | int offset; | |
602 | char *kind = ""; | |
603 | CORE_ADDR addr; | |
604 | struct symbol *sym; | |
605 | unsigned len; | |
606 | unsigned int i; | |
607 | struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type)); | |
608 | ||
609 | domain = TYPE_DOMAIN_TYPE (target_type); | |
610 | if (domain == (struct type *) NULL) | |
611 | { | |
612 | fprintf_filtered (stream, "<unknown>"); | |
613 | return; | |
614 | } | |
615 | addr = unpack_pointer (lookup_pointer_type (builtin_type_void), valaddr); | |
616 | if (METHOD_PTR_IS_VIRTUAL (addr)) | |
617 | { | |
618 | offset = METHOD_PTR_TO_VOFFSET (addr); | |
619 | len = TYPE_NFN_FIELDS (domain); | |
620 | for (i = 0; i < len; i++) | |
621 | { | |
622 | f = TYPE_FN_FIELDLIST1 (domain, i); | |
623 | len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i); | |
624 | ||
de17c821 | 625 | check_stub_method_group (domain, i); |
373a8247 PM |
626 | for (j = 0; j < len2; j++) |
627 | { | |
373a8247 PM |
628 | if (TYPE_FN_FIELD_VOFFSET (f, j) == offset) |
629 | { | |
373a8247 PM |
630 | kind = "virtual "; |
631 | goto common; | |
632 | } | |
633 | } | |
634 | } | |
635 | } | |
636 | else | |
637 | { | |
638 | sym = find_pc_function (addr); | |
639 | if (sym == 0) | |
640 | { | |
641 | error ("invalid pointer to member function"); | |
642 | } | |
643 | len = TYPE_NFN_FIELDS (domain); | |
644 | for (i = 0; i < len; i++) | |
645 | { | |
646 | f = TYPE_FN_FIELDLIST1 (domain, i); | |
647 | len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i); | |
648 | ||
de17c821 | 649 | check_stub_method_group (domain, i); |
373a8247 PM |
650 | for (j = 0; j < len2; j++) |
651 | { | |
cb137aa5 | 652 | if (DEPRECATED_STREQ (DEPRECATED_SYMBOL_NAME (sym), TYPE_FN_FIELD_PHYSNAME (f, j))) |
de17c821 | 653 | goto common; |
373a8247 PM |
654 | } |
655 | } | |
656 | } | |
657 | common: | |
658 | if (i < len) | |
659 | { | |
660 | char *demangled_name; | |
661 | ||
662 | fprintf_filtered (stream, "&"); | |
306d9ac5 | 663 | fputs_filtered (kind, stream); |
373a8247 PM |
664 | demangled_name = cplus_demangle (TYPE_FN_FIELD_PHYSNAME (f, j), |
665 | DMGL_ANSI | DMGL_PARAMS); | |
666 | if (demangled_name == NULL) | |
667 | fprintf_filtered (stream, "<badly mangled name %s>", | |
668 | TYPE_FN_FIELD_PHYSNAME (f, j)); | |
669 | else | |
670 | { | |
671 | fputs_filtered (demangled_name, stream); | |
b8c9b27d | 672 | xfree (demangled_name); |
373a8247 PM |
673 | } |
674 | } | |
675 | else | |
676 | { | |
677 | fprintf_filtered (stream, "("); | |
678 | type_print (type, "", stream, -1); | |
679 | fprintf_filtered (stream, ") %d", (int) addr >> 3); | |
680 | } | |
681 | } | |
682 | ||
683 | /* It was changed to this after 2.4.5. */ | |
684 | const char pascal_vtbl_ptr_name[] = | |
685 | {'_', '_', 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', 't', 'y', 'p', 'e', 0}; | |
686 | ||
687 | /* Return truth value for assertion that TYPE is of the type | |
688 | "pointer to virtual function". */ | |
689 | ||
690 | int | |
fba45db2 | 691 | pascal_object_is_vtbl_ptr_type (struct type *type) |
373a8247 PM |
692 | { |
693 | char *typename = type_name_no_tag (type); | |
694 | ||
695 | return (typename != NULL | |
6314a349 | 696 | && strcmp (typename, pascal_vtbl_ptr_name) == 0); |
373a8247 PM |
697 | } |
698 | ||
699 | /* Return truth value for the assertion that TYPE is of the type | |
700 | "pointer to virtual function table". */ | |
701 | ||
702 | int | |
fba45db2 | 703 | pascal_object_is_vtbl_member (struct type *type) |
373a8247 PM |
704 | { |
705 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
706 | { | |
707 | type = TYPE_TARGET_TYPE (type); | |
708 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) | |
709 | { | |
710 | type = TYPE_TARGET_TYPE (type); | |
711 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* if not using thunks */ | |
712 | || TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */ | |
713 | { | |
714 | /* Virtual functions tables are full of pointers | |
715 | to virtual functions. */ | |
716 | return pascal_object_is_vtbl_ptr_type (type); | |
717 | } | |
718 | } | |
719 | } | |
720 | return 0; | |
721 | } | |
722 | ||
723 | /* Mutually recursive subroutines of pascal_object_print_value and c_val_print to | |
724 | print out a structure's fields: pascal_object_print_value_fields and pascal_object_print_value. | |
725 | ||
726 | TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and PRETTY have the | |
727 | same meanings as in pascal_object_print_value and c_val_print. | |
728 | ||
729 | DONT_PRINT is an array of baseclass types that we | |
730 | should not print, or zero if called from top level. */ | |
731 | ||
732 | void | |
fba45db2 KB |
733 | pascal_object_print_value_fields (struct type *type, char *valaddr, |
734 | CORE_ADDR address, struct ui_file *stream, | |
735 | int format, int recurse, | |
736 | enum val_prettyprint pretty, | |
737 | struct type **dont_print_vb, | |
738 | int dont_print_statmem) | |
373a8247 PM |
739 | { |
740 | int i, len, n_baseclasses; | |
741 | struct obstack tmp_obstack; | |
742 | char *last_dont_print = obstack_next_free (&dont_print_statmem_obstack); | |
743 | ||
744 | CHECK_TYPEDEF (type); | |
745 | ||
746 | fprintf_filtered (stream, "{"); | |
747 | len = TYPE_NFIELDS (type); | |
748 | n_baseclasses = TYPE_N_BASECLASSES (type); | |
749 | ||
750 | /* Print out baseclasses such that we don't print | |
751 | duplicates of virtual baseclasses. */ | |
752 | if (n_baseclasses > 0) | |
753 | pascal_object_print_value (type, valaddr, address, stream, | |
754 | format, recurse + 1, pretty, dont_print_vb); | |
755 | ||
756 | if (!len && n_baseclasses == 1) | |
757 | fprintf_filtered (stream, "<No data fields>"); | |
758 | else | |
759 | { | |
373a8247 PM |
760 | int fields_seen = 0; |
761 | ||
762 | if (dont_print_statmem == 0) | |
763 | { | |
764 | /* If we're at top level, carve out a completely fresh | |
765 | chunk of the obstack and use that until this particular | |
766 | invocation returns. */ | |
767 | tmp_obstack = dont_print_statmem_obstack; | |
768 | obstack_finish (&dont_print_statmem_obstack); | |
769 | } | |
770 | ||
771 | for (i = n_baseclasses; i < len; i++) | |
772 | { | |
773 | /* If requested, skip printing of static fields. */ | |
774 | if (!pascal_static_field_print && TYPE_FIELD_STATIC (type, i)) | |
775 | continue; | |
776 | if (fields_seen) | |
777 | fprintf_filtered (stream, ", "); | |
778 | else if (n_baseclasses > 0) | |
779 | { | |
780 | if (pretty) | |
781 | { | |
782 | fprintf_filtered (stream, "\n"); | |
783 | print_spaces_filtered (2 + 2 * recurse, stream); | |
784 | fputs_filtered ("members of ", stream); | |
785 | fputs_filtered (type_name_no_tag (type), stream); | |
786 | fputs_filtered (": ", stream); | |
787 | } | |
788 | } | |
789 | fields_seen = 1; | |
790 | ||
791 | if (pretty) | |
792 | { | |
793 | fprintf_filtered (stream, "\n"); | |
794 | print_spaces_filtered (2 + 2 * recurse, stream); | |
795 | } | |
796 | else | |
797 | { | |
798 | wrap_here (n_spaces (2 + 2 * recurse)); | |
799 | } | |
800 | if (inspect_it) | |
801 | { | |
802 | if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR) | |
803 | fputs_filtered ("\"( ptr \"", stream); | |
804 | else | |
805 | fputs_filtered ("\"( nodef \"", stream); | |
806 | if (TYPE_FIELD_STATIC (type, i)) | |
807 | fputs_filtered ("static ", stream); | |
808 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
809 | language_cplus, | |
810 | DMGL_PARAMS | DMGL_ANSI); | |
811 | fputs_filtered ("\" \"", stream); | |
812 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
813 | language_cplus, | |
814 | DMGL_PARAMS | DMGL_ANSI); | |
815 | fputs_filtered ("\") \"", stream); | |
816 | } | |
817 | else | |
818 | { | |
819 | annotate_field_begin (TYPE_FIELD_TYPE (type, i)); | |
820 | ||
821 | if (TYPE_FIELD_STATIC (type, i)) | |
822 | fputs_filtered ("static ", stream); | |
823 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
824 | language_cplus, | |
825 | DMGL_PARAMS | DMGL_ANSI); | |
826 | annotate_field_name_end (); | |
827 | fputs_filtered (" = ", stream); | |
828 | annotate_field_value (); | |
829 | } | |
830 | ||
831 | if (!TYPE_FIELD_STATIC (type, i) && TYPE_FIELD_PACKED (type, i)) | |
832 | { | |
6943961c | 833 | struct value *v; |
373a8247 PM |
834 | |
835 | /* Bitfields require special handling, especially due to byte | |
836 | order problems. */ | |
837 | if (TYPE_FIELD_IGNORE (type, i)) | |
838 | { | |
839 | fputs_filtered ("<optimized out or zero length>", stream); | |
840 | } | |
841 | else | |
842 | { | |
843 | v = value_from_longest (TYPE_FIELD_TYPE (type, i), | |
844 | unpack_field_as_long (type, valaddr, i)); | |
845 | ||
846 | val_print (TYPE_FIELD_TYPE (type, i), VALUE_CONTENTS (v), 0, 0, | |
847 | stream, format, 0, recurse + 1, pretty); | |
848 | } | |
849 | } | |
850 | else | |
851 | { | |
852 | if (TYPE_FIELD_IGNORE (type, i)) | |
853 | { | |
854 | fputs_filtered ("<optimized out or zero length>", stream); | |
855 | } | |
856 | else if (TYPE_FIELD_STATIC (type, i)) | |
857 | { | |
6943961c AC |
858 | /* struct value *v = value_static_field (type, i); v4.17 specific */ |
859 | struct value *v; | |
373a8247 PM |
860 | v = value_from_longest (TYPE_FIELD_TYPE (type, i), |
861 | unpack_field_as_long (type, valaddr, i)); | |
862 | ||
863 | if (v == NULL) | |
864 | fputs_filtered ("<optimized out>", stream); | |
865 | else | |
866 | pascal_object_print_static_field (TYPE_FIELD_TYPE (type, i), v, | |
867 | stream, format, recurse + 1, | |
868 | pretty); | |
869 | } | |
870 | else | |
871 | { | |
872 | /* val_print (TYPE_FIELD_TYPE (type, i), | |
873 | valaddr + TYPE_FIELD_BITPOS (type, i) / 8, | |
874 | address + TYPE_FIELD_BITPOS (type, i) / 8, 0, | |
875 | stream, format, 0, recurse + 1, pretty); */ | |
876 | val_print (TYPE_FIELD_TYPE (type, i), | |
877 | valaddr, TYPE_FIELD_BITPOS (type, i) / 8, | |
878 | address + TYPE_FIELD_BITPOS (type, i) / 8, | |
879 | stream, format, 0, recurse + 1, pretty); | |
880 | } | |
881 | } | |
882 | annotate_field_end (); | |
883 | } | |
884 | ||
885 | if (dont_print_statmem == 0) | |
886 | { | |
887 | /* Free the space used to deal with the printing | |
888 | of the members from top level. */ | |
889 | obstack_free (&dont_print_statmem_obstack, last_dont_print); | |
890 | dont_print_statmem_obstack = tmp_obstack; | |
891 | } | |
892 | ||
893 | if (pretty) | |
894 | { | |
895 | fprintf_filtered (stream, "\n"); | |
896 | print_spaces_filtered (2 * recurse, stream); | |
897 | } | |
898 | } | |
899 | fprintf_filtered (stream, "}"); | |
900 | } | |
901 | ||
902 | /* Special val_print routine to avoid printing multiple copies of virtual | |
903 | baseclasses. */ | |
904 | ||
905 | void | |
fba45db2 KB |
906 | pascal_object_print_value (struct type *type, char *valaddr, CORE_ADDR address, |
907 | struct ui_file *stream, int format, int recurse, | |
908 | enum val_prettyprint pretty, | |
909 | struct type **dont_print_vb) | |
373a8247 PM |
910 | { |
911 | struct obstack tmp_obstack; | |
912 | struct type **last_dont_print | |
913 | = (struct type **) obstack_next_free (&dont_print_vb_obstack); | |
914 | int i, n_baseclasses = TYPE_N_BASECLASSES (type); | |
915 | ||
916 | if (dont_print_vb == 0) | |
917 | { | |
918 | /* If we're at top level, carve out a completely fresh | |
919 | chunk of the obstack and use that until this particular | |
920 | invocation returns. */ | |
921 | tmp_obstack = dont_print_vb_obstack; | |
922 | /* Bump up the high-water mark. Now alpha is omega. */ | |
923 | obstack_finish (&dont_print_vb_obstack); | |
924 | } | |
925 | ||
926 | for (i = 0; i < n_baseclasses; i++) | |
927 | { | |
928 | int boffset; | |
929 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); | |
930 | char *basename = TYPE_NAME (baseclass); | |
931 | char *base_valaddr; | |
932 | ||
933 | if (BASETYPE_VIA_VIRTUAL (type, i)) | |
934 | { | |
935 | struct type **first_dont_print | |
936 | = (struct type **) obstack_base (&dont_print_vb_obstack); | |
937 | ||
938 | int j = (struct type **) obstack_next_free (&dont_print_vb_obstack) | |
939 | - first_dont_print; | |
940 | ||
941 | while (--j >= 0) | |
942 | if (baseclass == first_dont_print[j]) | |
943 | goto flush_it; | |
944 | ||
945 | obstack_ptr_grow (&dont_print_vb_obstack, baseclass); | |
946 | } | |
947 | ||
948 | boffset = baseclass_offset (type, i, valaddr, address); | |
949 | ||
950 | if (pretty) | |
951 | { | |
952 | fprintf_filtered (stream, "\n"); | |
953 | print_spaces_filtered (2 * recurse, stream); | |
954 | } | |
955 | fputs_filtered ("<", stream); | |
956 | /* Not sure what the best notation is in the case where there is no | |
957 | baseclass name. */ | |
958 | ||
959 | fputs_filtered (basename ? basename : "", stream); | |
960 | fputs_filtered ("> = ", stream); | |
961 | ||
962 | /* The virtual base class pointer might have been clobbered by the | |
963 | user program. Make sure that it still points to a valid memory | |
964 | location. */ | |
965 | ||
966 | if (boffset != -1 && (boffset < 0 || boffset >= TYPE_LENGTH (type))) | |
967 | { | |
34c0bd93 | 968 | /* FIXME (alloc): not safe is baseclass is really really big. */ |
373a8247 PM |
969 | base_valaddr = (char *) alloca (TYPE_LENGTH (baseclass)); |
970 | if (target_read_memory (address + boffset, base_valaddr, | |
971 | TYPE_LENGTH (baseclass)) != 0) | |
972 | boffset = -1; | |
973 | } | |
974 | else | |
975 | base_valaddr = valaddr + boffset; | |
976 | ||
977 | if (boffset == -1) | |
978 | fprintf_filtered (stream, "<invalid address>"); | |
979 | else | |
980 | pascal_object_print_value_fields (baseclass, base_valaddr, address + boffset, | |
981 | stream, format, recurse, pretty, | |
982 | (struct type **) obstack_base (&dont_print_vb_obstack), | |
983 | 0); | |
984 | fputs_filtered (", ", stream); | |
985 | ||
986 | flush_it: | |
987 | ; | |
988 | } | |
989 | ||
990 | if (dont_print_vb == 0) | |
991 | { | |
992 | /* Free the space used to deal with the printing | |
993 | of this type from top level. */ | |
994 | obstack_free (&dont_print_vb_obstack, last_dont_print); | |
995 | /* Reset watermark so that we can continue protecting | |
996 | ourselves from whatever we were protecting ourselves. */ | |
997 | dont_print_vb_obstack = tmp_obstack; | |
998 | } | |
999 | } | |
1000 | ||
1001 | /* Print value of a static member. | |
1002 | To avoid infinite recursion when printing a class that contains | |
1003 | a static instance of the class, we keep the addresses of all printed | |
1004 | static member classes in an obstack and refuse to print them more | |
1005 | than once. | |
1006 | ||
1007 | VAL contains the value to print, TYPE, STREAM, RECURSE, and PRETTY | |
1008 | have the same meanings as in c_val_print. */ | |
1009 | ||
1010 | static void | |
6943961c | 1011 | pascal_object_print_static_field (struct type *type, struct value *val, |
fba45db2 KB |
1012 | struct ui_file *stream, int format, |
1013 | int recurse, enum val_prettyprint pretty) | |
373a8247 PM |
1014 | { |
1015 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) | |
1016 | { | |
1017 | CORE_ADDR *first_dont_print; | |
1018 | int i; | |
1019 | ||
1020 | first_dont_print | |
1021 | = (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack); | |
1022 | i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack) | |
1023 | - first_dont_print; | |
1024 | ||
1025 | while (--i >= 0) | |
1026 | { | |
1027 | if (VALUE_ADDRESS (val) == first_dont_print[i]) | |
1028 | { | |
1029 | fputs_filtered ("<same as static member of an already seen type>", | |
1030 | stream); | |
1031 | return; | |
1032 | } | |
1033 | } | |
1034 | ||
1035 | obstack_grow (&dont_print_statmem_obstack, (char *) &VALUE_ADDRESS (val), | |
1036 | sizeof (CORE_ADDR)); | |
1037 | ||
1038 | CHECK_TYPEDEF (type); | |
1039 | pascal_object_print_value_fields (type, VALUE_CONTENTS (val), VALUE_ADDRESS (val), | |
1040 | stream, format, recurse, pretty, NULL, 1); | |
1041 | return; | |
1042 | } | |
1043 | val_print (type, VALUE_CONTENTS (val), 0, VALUE_ADDRESS (val), | |
1044 | stream, format, 0, recurse, pretty); | |
1045 | } | |
1046 | ||
1047 | void | |
5bcca90b | 1048 | pascal_object_print_class_member (const bfd_byte *valaddr, struct type *domain, |
fba45db2 | 1049 | struct ui_file *stream, char *prefix) |
373a8247 PM |
1050 | { |
1051 | ||
1052 | /* VAL is a byte offset into the structure type DOMAIN. | |
1053 | Find the name of the field for that offset and | |
1054 | print it. */ | |
1055 | int extra = 0; | |
1056 | int bits = 0; | |
52f0bd74 | 1057 | unsigned int i; |
373a8247 PM |
1058 | unsigned len = TYPE_NFIELDS (domain); |
1059 | /* @@ Make VAL into bit offset */ | |
1060 | LONGEST val = unpack_long (builtin_type_int, valaddr) << 3; | |
1061 | for (i = TYPE_N_BASECLASSES (domain); i < len; i++) | |
1062 | { | |
1063 | int bitpos = TYPE_FIELD_BITPOS (domain, i); | |
1064 | QUIT; | |
1065 | if (val == bitpos) | |
1066 | break; | |
1067 | if (val < bitpos && i != 0) | |
1068 | { | |
1069 | /* Somehow pointing into a field. */ | |
1070 | i -= 1; | |
1071 | extra = (val - TYPE_FIELD_BITPOS (domain, i)); | |
1072 | if (extra & 0x7) | |
1073 | bits = 1; | |
1074 | else | |
1075 | extra >>= 3; | |
1076 | break; | |
1077 | } | |
1078 | } | |
1079 | if (i < len) | |
1080 | { | |
1081 | char *name; | |
306d9ac5 | 1082 | fputs_filtered (prefix, stream); |
373a8247 PM |
1083 | name = type_name_no_tag (domain); |
1084 | if (name) | |
1085 | fputs_filtered (name, stream); | |
1086 | else | |
1087 | pascal_type_print_base (domain, stream, 0, 0); | |
1088 | fprintf_filtered (stream, "::"); | |
1089 | fputs_filtered (TYPE_FIELD_NAME (domain, i), stream); | |
1090 | if (extra) | |
1091 | fprintf_filtered (stream, " + %d bytes", extra); | |
1092 | if (bits) | |
1093 | fprintf_filtered (stream, " (offset in bits)"); | |
1094 | } | |
1095 | else | |
1096 | fprintf_filtered (stream, "%ld", (long int) (val >> 3)); | |
1097 | } | |
1098 | ||
b9362cc7 | 1099 | extern initialize_file_ftype _initialize_pascal_valprint; /* -Wmissing-prototypes */ |
373a8247 PM |
1100 | |
1101 | void | |
fba45db2 | 1102 | _initialize_pascal_valprint (void) |
373a8247 | 1103 | { |
cb1a6d5f | 1104 | deprecated_add_show_from_set |
373a8247 PM |
1105 | (add_set_cmd ("pascal_static-members", class_support, var_boolean, |
1106 | (char *) &pascal_static_field_print, | |
1107 | "Set printing of pascal static members.", | |
1108 | &setprintlist), | |
1109 | &showprintlist); | |
1110 | /* Turn on printing of static fields. */ | |
1111 | pascal_static_field_print = 1; | |
1112 | ||
1113 | } |