Commit | Line | Data |
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c906108c | 1 | /* Support for printing Java values for GDB, the GNU debugger. |
b6ba6518 | 2 | Copyright 1997, 1998, 1999, 2000 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b JM |
16 | You should have received a copy of the GNU General Public License |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
20 | |
21 | #include "defs.h" | |
22 | #include "symtab.h" | |
23 | #include "gdbtypes.h" | |
7a292a7a | 24 | #include "gdbcore.h" |
c906108c SS |
25 | #include "expression.h" |
26 | #include "value.h" | |
27 | #include "demangle.h" | |
28 | #include "valprint.h" | |
29 | #include "language.h" | |
30 | #include "jv-lang.h" | |
31 | #include "c-lang.h" | |
7a292a7a | 32 | #include "annotate.h" |
309367d4 | 33 | #include "gdb_string.h" |
c906108c | 34 | |
392a587b JM |
35 | /* Local functions */ |
36 | ||
d9fcf2fb JM |
37 | static void java_print_value_fields (struct type * type, char *valaddr, |
38 | CORE_ADDR address, | |
39 | struct ui_file *stream, int format, | |
40 | int recurse, | |
41 | enum val_prettyprint pretty); | |
392a587b JM |
42 | |
43 | ||
c906108c | 44 | int |
75c9979e | 45 | java_value_print (struct value *val, struct ui_file *stream, int format, |
fba45db2 | 46 | enum val_prettyprint pretty) |
c906108c SS |
47 | { |
48 | struct type *type; | |
49 | CORE_ADDR address; | |
50 | int i; | |
51 | char *name; | |
52 | ||
53 | type = VALUE_TYPE (val); | |
54 | address = VALUE_ADDRESS (val) + VALUE_OFFSET (val); | |
55 | ||
56 | if (is_object_type (type)) | |
57 | { | |
58 | CORE_ADDR obj_addr; | |
59 | ||
60 | /* Get the run-time type, and cast the object into that */ | |
61 | ||
62 | obj_addr = unpack_pointer (type, VALUE_CONTENTS (val)); | |
63 | ||
64 | if (obj_addr != 0) | |
65 | { | |
66 | type = type_from_class (java_class_from_object (val)); | |
67 | type = lookup_pointer_type (type); | |
68 | ||
69 | val = value_at (type, address, NULL); | |
70 | } | |
71 | } | |
72 | ||
c5aa993b | 73 | if (TYPE_CODE (type) == TYPE_CODE_PTR && !value_logical_not (val)) |
c906108c SS |
74 | type_print (TYPE_TARGET_TYPE (type), "", stream, -1); |
75 | ||
76 | name = TYPE_TAG_NAME (type); | |
77 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT && name != NULL | |
c5aa993b | 78 | && (i = strlen (name), name[i - 1] == ']')) |
c906108c SS |
79 | { |
80 | char buf4[4]; | |
81 | long length; | |
82 | unsigned int things_printed = 0; | |
c5aa993b | 83 | int reps; |
c906108c SS |
84 | struct type *el_type = java_primitive_type_from_name (name, i - 2); |
85 | ||
86 | i = 0; | |
87 | read_memory (address + JAVA_OBJECT_SIZE, buf4, 4); | |
88 | ||
89 | length = (long) extract_signed_integer (buf4, 4); | |
90 | fprintf_filtered (stream, "{length: %ld", length); | |
91 | ||
92 | if (el_type == NULL) | |
93 | { | |
c65ecaf3 AC |
94 | CORE_ADDR element; |
95 | CORE_ADDR next_element = -1; /* dummy initial value */ | |
c906108c | 96 | |
c5aa993b | 97 | address += JAVA_OBJECT_SIZE + 4; /* Skip object header and length. */ |
c906108c SS |
98 | |
99 | while (i < length && things_printed < print_max) | |
100 | { | |
35fc8285 | 101 | char *buf; |
c906108c | 102 | |
35fc8285 | 103 | buf = alloca (TARGET_PTR_BIT / HOST_CHAR_BIT); |
c906108c SS |
104 | fputs_filtered (", ", stream); |
105 | wrap_here (n_spaces (2)); | |
106 | ||
107 | if (i > 0) | |
108 | element = next_element; | |
109 | else | |
110 | { | |
c5aa993b | 111 | read_memory (address, buf, sizeof (buf)); |
c906108c | 112 | address += TARGET_PTR_BIT / HOST_CHAR_BIT; |
c5aa993b | 113 | element = extract_address (buf, sizeof (buf)); |
c906108c SS |
114 | } |
115 | ||
c5aa993b | 116 | for (reps = 1; i + reps < length; reps++) |
c906108c | 117 | { |
c5aa993b | 118 | read_memory (address, buf, sizeof (buf)); |
c906108c | 119 | address += TARGET_PTR_BIT / HOST_CHAR_BIT; |
c5aa993b | 120 | next_element = extract_address (buf, sizeof (buf)); |
c906108c SS |
121 | if (next_element != element) |
122 | break; | |
123 | } | |
124 | ||
125 | if (reps == 1) | |
126 | fprintf_filtered (stream, "%d: ", i); | |
127 | else | |
128 | fprintf_filtered (stream, "%d..%d: ", i, i + reps - 1); | |
129 | ||
130 | if (element == 0) | |
131 | fprintf_filtered (stream, "null"); | |
132 | else | |
d4f3574e | 133 | fprintf_filtered (stream, "@%s", paddr_nz (element)); |
c906108c SS |
134 | |
135 | things_printed++; | |
136 | i += reps; | |
137 | } | |
138 | } | |
139 | else | |
140 | { | |
75c9979e AC |
141 | struct value *v = allocate_value (el_type); |
142 | struct value *next_v = allocate_value (el_type); | |
c906108c SS |
143 | |
144 | VALUE_ADDRESS (v) = address + JAVA_OBJECT_SIZE + 4; | |
145 | VALUE_ADDRESS (next_v) = VALUE_ADDRESS (v); | |
146 | ||
147 | while (i < length && things_printed < print_max) | |
148 | { | |
149 | fputs_filtered (", ", stream); | |
150 | wrap_here (n_spaces (2)); | |
151 | ||
152 | if (i > 0) | |
153 | { | |
75c9979e | 154 | struct value *tmp; |
c906108c SS |
155 | |
156 | tmp = next_v; | |
157 | next_v = v; | |
158 | v = tmp; | |
159 | } | |
160 | else | |
161 | { | |
162 | VALUE_LAZY (v) = 1; | |
163 | VALUE_OFFSET (v) = 0; | |
164 | } | |
165 | ||
166 | VALUE_OFFSET (next_v) = VALUE_OFFSET (v); | |
167 | ||
c5aa993b | 168 | for (reps = 1; i + reps < length; reps++) |
c906108c SS |
169 | { |
170 | VALUE_LAZY (next_v) = 1; | |
171 | VALUE_OFFSET (next_v) += TYPE_LENGTH (el_type); | |
172 | if (memcmp (VALUE_CONTENTS (v), VALUE_CONTENTS (next_v), | |
173 | TYPE_LENGTH (el_type)) != 0) | |
174 | break; | |
175 | } | |
176 | ||
177 | if (reps == 1) | |
178 | fprintf_filtered (stream, "%d: ", i); | |
179 | else | |
180 | fprintf_filtered (stream, "%d..%d: ", i, i + reps - 1); | |
181 | ||
182 | val_print (VALUE_TYPE (v), VALUE_CONTENTS (v), 0, 0, | |
183 | stream, format, 2, 1, pretty); | |
184 | ||
185 | things_printed++; | |
186 | i += reps; | |
187 | } | |
188 | } | |
189 | ||
190 | if (i < length) | |
191 | fprintf_filtered (stream, "..."); | |
192 | ||
193 | fprintf_filtered (stream, "}"); | |
194 | ||
195 | return 0; | |
196 | } | |
197 | ||
198 | /* If it's type String, print it */ | |
199 | ||
200 | if (TYPE_CODE (type) == TYPE_CODE_PTR | |
201 | && TYPE_TARGET_TYPE (type) | |
d4cad8db TT |
202 | && TYPE_TAG_NAME (TYPE_TARGET_TYPE (type)) |
203 | && strcmp (TYPE_TAG_NAME (TYPE_TARGET_TYPE (type)), | |
204 | "java.lang.String") == 0 | |
c906108c | 205 | && (format == 0 || format == 's') |
8dccf761 | 206 | && address != 0 |
1aa20aa8 | 207 | && value_as_address (val) != 0) |
c906108c | 208 | { |
75c9979e | 209 | struct value *data_val; |
c906108c | 210 | CORE_ADDR data; |
75c9979e | 211 | struct value *boffset_val; |
c906108c | 212 | unsigned long boffset; |
75c9979e | 213 | struct value *count_val; |
c906108c | 214 | unsigned long count; |
75c9979e | 215 | struct value *mark; |
c906108c SS |
216 | |
217 | mark = value_mark (); /* Remember start of new values */ | |
218 | ||
219 | data_val = value_struct_elt (&val, NULL, "data", NULL, NULL); | |
1aa20aa8 | 220 | data = value_as_address (data_val); |
c906108c SS |
221 | |
222 | boffset_val = value_struct_elt (&val, NULL, "boffset", NULL, NULL); | |
1aa20aa8 | 223 | boffset = value_as_address (boffset_val); |
c906108c SS |
224 | |
225 | count_val = value_struct_elt (&val, NULL, "count", NULL, NULL); | |
1aa20aa8 | 226 | count = value_as_address (count_val); |
c906108c | 227 | |
c5aa993b | 228 | value_free_to_mark (mark); /* Release unnecessary values */ |
c906108c SS |
229 | |
230 | val_print_string (data + boffset, count, 2, stream); | |
231 | ||
232 | return 0; | |
233 | } | |
234 | ||
235 | return (val_print (type, VALUE_CONTENTS (val), 0, address, | |
236 | stream, format, 1, 0, pretty)); | |
237 | } | |
238 | ||
239 | /* TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and PRETTY have the | |
240 | same meanings as in cp_print_value and c_val_print. | |
241 | ||
242 | DONT_PRINT is an array of baseclass types that we | |
243 | should not print, or zero if called from top level. */ | |
244 | ||
392a587b | 245 | static void |
fba45db2 KB |
246 | java_print_value_fields (struct type *type, char *valaddr, CORE_ADDR address, |
247 | struct ui_file *stream, int format, int recurse, | |
248 | enum val_prettyprint pretty) | |
c906108c SS |
249 | { |
250 | int i, len, n_baseclasses; | |
251 | ||
252 | CHECK_TYPEDEF (type); | |
253 | ||
254 | fprintf_filtered (stream, "{"); | |
255 | len = TYPE_NFIELDS (type); | |
256 | n_baseclasses = TYPE_N_BASECLASSES (type); | |
257 | ||
258 | if (n_baseclasses > 0) | |
259 | { | |
260 | int i, n_baseclasses = TYPE_N_BASECLASSES (type); | |
261 | ||
262 | for (i = 0; i < n_baseclasses; i++) | |
263 | { | |
264 | int boffset; | |
265 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); | |
266 | char *basename = TYPE_NAME (baseclass); | |
267 | char *base_valaddr; | |
c5aa993b | 268 | |
c906108c SS |
269 | if (BASETYPE_VIA_VIRTUAL (type, i)) |
270 | continue; | |
271 | ||
272 | if (basename != NULL && strcmp (basename, "java.lang.Object") == 0) | |
273 | continue; | |
274 | ||
275 | boffset = 0; | |
276 | ||
277 | if (pretty) | |
278 | { | |
279 | fprintf_filtered (stream, "\n"); | |
c5aa993b | 280 | print_spaces_filtered (2 * (recurse + 1), stream); |
c906108c SS |
281 | } |
282 | fputs_filtered ("<", stream); | |
283 | /* Not sure what the best notation is in the case where there is no | |
284 | baseclass name. */ | |
285 | fputs_filtered (basename ? basename : "", stream); | |
286 | fputs_filtered ("> = ", stream); | |
287 | ||
288 | base_valaddr = valaddr; | |
289 | ||
290 | java_print_value_fields (baseclass, base_valaddr, address + boffset, | |
c5aa993b | 291 | stream, format, recurse + 1, pretty); |
c906108c | 292 | fputs_filtered (", ", stream); |
c5aa993b | 293 | |
c906108c SS |
294 | flush_it: |
295 | ; | |
296 | } | |
297 | ||
298 | } | |
299 | ||
300 | if (!len && n_baseclasses == 1) | |
301 | fprintf_filtered (stream, "<No data fields>"); | |
302 | else | |
303 | { | |
304 | extern int inspect_it; | |
305 | int fields_seen = 0; | |
306 | ||
307 | for (i = n_baseclasses; i < len; i++) | |
308 | { | |
309 | /* If requested, skip printing of static fields. */ | |
310 | if (TYPE_FIELD_STATIC (type, i)) | |
311 | { | |
312 | char *name = TYPE_FIELD_NAME (type, i); | |
313 | if (!static_field_print) | |
314 | continue; | |
315 | if (name != NULL && strcmp (name, "class") == 0) | |
316 | continue; | |
317 | } | |
318 | if (fields_seen) | |
319 | fprintf_filtered (stream, ", "); | |
320 | else if (n_baseclasses > 0) | |
321 | { | |
322 | if (pretty) | |
323 | { | |
324 | fprintf_filtered (stream, "\n"); | |
325 | print_spaces_filtered (2 + 2 * recurse, stream); | |
326 | fputs_filtered ("members of ", stream); | |
327 | fputs_filtered (type_name_no_tag (type), stream); | |
328 | fputs_filtered (": ", stream); | |
329 | } | |
330 | } | |
331 | fields_seen = 1; | |
332 | ||
333 | if (pretty) | |
334 | { | |
335 | fprintf_filtered (stream, "\n"); | |
336 | print_spaces_filtered (2 + 2 * recurse, stream); | |
337 | } | |
c5aa993b | 338 | else |
c906108c SS |
339 | { |
340 | wrap_here (n_spaces (2 + 2 * recurse)); | |
341 | } | |
342 | if (inspect_it) | |
343 | { | |
344 | if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR) | |
345 | fputs_filtered ("\"( ptr \"", stream); | |
346 | else | |
347 | fputs_filtered ("\"( nodef \"", stream); | |
348 | if (TYPE_FIELD_STATIC (type, i)) | |
349 | fputs_filtered ("static ", stream); | |
350 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
351 | language_cplus, | |
352 | DMGL_PARAMS | DMGL_ANSI); | |
353 | fputs_filtered ("\" \"", stream); | |
354 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
355 | language_cplus, | |
356 | DMGL_PARAMS | DMGL_ANSI); | |
357 | fputs_filtered ("\") \"", stream); | |
358 | } | |
359 | else | |
360 | { | |
361 | annotate_field_begin (TYPE_FIELD_TYPE (type, i)); | |
362 | ||
363 | if (TYPE_FIELD_STATIC (type, i)) | |
364 | fputs_filtered ("static ", stream); | |
365 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), | |
366 | language_cplus, | |
367 | DMGL_PARAMS | DMGL_ANSI); | |
368 | annotate_field_name_end (); | |
369 | fputs_filtered (": ", stream); | |
370 | annotate_field_value (); | |
371 | } | |
372 | ||
373 | if (!TYPE_FIELD_STATIC (type, i) && TYPE_FIELD_PACKED (type, i)) | |
374 | { | |
75c9979e | 375 | struct value *v; |
c906108c SS |
376 | |
377 | /* Bitfields require special handling, especially due to byte | |
c5aa993b | 378 | order problems. */ |
c906108c SS |
379 | if (TYPE_FIELD_IGNORE (type, i)) |
380 | { | |
c5aa993b | 381 | fputs_filtered ("<optimized out or zero length>", stream); |
c906108c SS |
382 | } |
383 | else | |
384 | { | |
c5aa993b | 385 | v = value_from_longest (TYPE_FIELD_TYPE (type, i), |
c906108c SS |
386 | unpack_field_as_long (type, valaddr, i)); |
387 | ||
c5aa993b JM |
388 | val_print (TYPE_FIELD_TYPE (type, i), VALUE_CONTENTS (v), 0, |
389 | 0, stream, format, 0, recurse + 1, pretty); | |
c906108c SS |
390 | } |
391 | } | |
392 | else | |
393 | { | |
394 | if (TYPE_FIELD_IGNORE (type, i)) | |
395 | { | |
c5aa993b | 396 | fputs_filtered ("<optimized out or zero length>", stream); |
c906108c SS |
397 | } |
398 | else if (TYPE_FIELD_STATIC (type, i)) | |
399 | { | |
75c9979e | 400 | struct value *v = value_static_field (type, i); |
c906108c SS |
401 | if (v == NULL) |
402 | fputs_filtered ("<optimized out>", stream); | |
403 | else | |
404 | { | |
405 | struct type *t = check_typedef (VALUE_TYPE (v)); | |
406 | if (TYPE_CODE (t) == TYPE_CODE_STRUCT) | |
407 | v = value_addr (v); | |
408 | val_print (VALUE_TYPE (v), | |
409 | VALUE_CONTENTS (v), 0, VALUE_ADDRESS (v), | |
c5aa993b | 410 | stream, format, 0, recurse + 1, pretty); |
c906108c SS |
411 | } |
412 | } | |
7a292a7a SS |
413 | else if (TYPE_FIELD_TYPE (type, i) == NULL) |
414 | fputs_filtered ("<unknown type>", stream); | |
c906108c SS |
415 | else |
416 | { | |
c5aa993b JM |
417 | val_print (TYPE_FIELD_TYPE (type, i), |
418 | valaddr + TYPE_FIELD_BITPOS (type, i) / 8, 0, | |
419 | address + TYPE_FIELD_BITPOS (type, i) / 8, | |
420 | stream, format, 0, recurse + 1, pretty); | |
c906108c SS |
421 | } |
422 | } | |
423 | annotate_field_end (); | |
424 | } | |
425 | ||
426 | if (pretty) | |
427 | { | |
428 | fprintf_filtered (stream, "\n"); | |
429 | print_spaces_filtered (2 * recurse, stream); | |
430 | } | |
431 | } | |
432 | fprintf_filtered (stream, "}"); | |
433 | } | |
434 | ||
435 | /* Print data of type TYPE located at VALADDR (within GDB), which came from | |
436 | the inferior at address ADDRESS, onto stdio stream STREAM according to | |
437 | FORMAT (a letter or 0 for natural format). The data at VALADDR is in | |
438 | target byte order. | |
439 | ||
440 | If the data are a string pointer, returns the number of string characters | |
441 | printed. | |
442 | ||
443 | If DEREF_REF is nonzero, then dereference references, otherwise just print | |
444 | them like pointers. | |
445 | ||
446 | The PRETTY parameter controls prettyprinting. */ | |
447 | ||
448 | int | |
fba45db2 KB |
449 | java_val_print (struct type *type, char *valaddr, int embedded_offset, |
450 | CORE_ADDR address, struct ui_file *stream, int format, | |
451 | int deref_ref, int recurse, enum val_prettyprint pretty) | |
c906108c | 452 | { |
c5aa993b | 453 | register unsigned int i = 0; /* Number of characters printed */ |
c906108c SS |
454 | struct type *target_type; |
455 | CORE_ADDR addr; | |
456 | ||
457 | CHECK_TYPEDEF (type); | |
458 | switch (TYPE_CODE (type)) | |
459 | { | |
460 | case TYPE_CODE_PTR: | |
461 | if (format && format != 's') | |
462 | { | |
463 | print_scalar_formatted (valaddr, type, format, 0, stream); | |
464 | break; | |
465 | } | |
466 | #if 0 | |
c5aa993b | 467 | if (vtblprint && cp_is_vtbl_ptr_type (type)) |
c906108c | 468 | { |
c5aa993b | 469 | /* Print the unmangled name if desired. */ |
c906108c SS |
470 | /* Print vtable entry - we only get here if we ARE using |
471 | -fvtable_thunks. (Otherwise, look under TYPE_CODE_STRUCT.) */ | |
c5aa993b JM |
472 | print_address_demangle (extract_address (valaddr, TYPE_LENGTH (type)), |
473 | stream, demangle); | |
c906108c SS |
474 | break; |
475 | } | |
476 | #endif | |
477 | addr = unpack_pointer (type, valaddr); | |
478 | if (addr == 0) | |
479 | { | |
480 | fputs_filtered ("null", stream); | |
481 | return i; | |
482 | } | |
483 | target_type = check_typedef (TYPE_TARGET_TYPE (type)); | |
484 | ||
485 | if (TYPE_CODE (target_type) == TYPE_CODE_FUNC) | |
486 | { | |
487 | /* Try to print what function it points to. */ | |
488 | print_address_demangle (addr, stream, demangle); | |
489 | /* Return value is irrelevant except for string pointers. */ | |
490 | return (0); | |
491 | } | |
492 | ||
493 | if (addressprint && format != 's') | |
494 | { | |
495 | fputs_filtered ("@", stream); | |
496 | print_longest (stream, 'x', 0, (ULONGEST) addr); | |
497 | } | |
498 | ||
499 | return i; | |
500 | ||
501 | case TYPE_CODE_CHAR: | |
c906108c | 502 | case TYPE_CODE_INT: |
c55a3f73 TT |
503 | /* Can't just call c_val_print because that prints bytes as C |
504 | chars. */ | |
c906108c SS |
505 | format = format ? format : output_format; |
506 | if (format) | |
507 | print_scalar_formatted (valaddr, type, format, 0, stream); | |
c55a3f73 TT |
508 | else if (TYPE_CODE (type) == TYPE_CODE_CHAR |
509 | || (TYPE_CODE (type) == TYPE_CODE_INT | |
510 | && TYPE_LENGTH (type) == 2 | |
511 | && strcmp (TYPE_NAME (type), "char") == 0)) | |
512 | LA_PRINT_CHAR ((int) unpack_long (type, valaddr), stream); | |
c906108c SS |
513 | else |
514 | val_print_type_code_int (type, valaddr, stream); | |
515 | break; | |
516 | ||
517 | case TYPE_CODE_STRUCT: | |
518 | java_print_value_fields (type, valaddr, address, stream, format, | |
519 | recurse, pretty); | |
520 | break; | |
521 | ||
522 | default: | |
523 | return c_val_print (type, valaddr, embedded_offset, address, stream, | |
524 | format, deref_ref, recurse, pretty); | |
525 | } | |
526 | ||
527 | return 0; | |
528 | } |