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7a9eb4c4 PB |
1 | /* Java language support routines for GDB, the GNU debugger. |
2 | Copyright 1997 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GDB. | |
5 | ||
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. | |
10 | ||
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. | |
15 | ||
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, Boston, MA 02111-1307, USA. */ | |
19 | ||
20 | #include "defs.h" | |
21 | #include "symtab.h" | |
22 | #include "gdbtypes.h" | |
23 | #include "expression.h" | |
24 | #include "parser-defs.h" | |
25 | #include "language.h" | |
26 | #include "gdbtypes.h" | |
27 | #include "symtab.h" | |
28 | #include "symfile.h" | |
29 | #include "objfiles.h" | |
30 | #include "gdb_string.h" | |
31 | #include "value.h" | |
32 | #include "c-lang.h" | |
166606b7 | 33 | #include "jv-lang.h" |
40b647e9 | 34 | #include "gdbcore.h" |
7a9eb4c4 PB |
35 | |
36 | struct type *java_int_type; | |
37 | struct type *java_byte_type; | |
38 | struct type *java_short_type; | |
39 | struct type *java_long_type; | |
40 | struct type *java_boolean_type; | |
41 | struct type *java_char_type; | |
42 | struct type *java_float_type; | |
43 | struct type *java_double_type; | |
44 | struct type *java_void_type; | |
45 | ||
46 | struct type *java_object_type; | |
47 | ||
48 | /* This objfile contains symtabs that have been dynamically created | |
49 | to record dynamically loaded Java classes and dynamically | |
50 | compiled java methods. */ | |
51 | struct objfile *dynamics_objfile = NULL; | |
52 | ||
166606b7 PB |
53 | struct type *java_link_class_type PARAMS((struct type*, value_ptr)); |
54 | ||
7a9eb4c4 PB |
55 | struct objfile * |
56 | get_dynamics_objfile () | |
57 | { | |
58 | if (dynamics_objfile == NULL) | |
59 | { | |
60 | dynamics_objfile = allocate_objfile (NULL, 0); | |
61 | } | |
62 | return dynamics_objfile; | |
63 | } | |
64 | ||
65 | #if 1 | |
66 | /* symtab contains classes read from the inferior. */ | |
67 | ||
68 | static struct symtab *class_symtab = NULL; | |
69 | ||
70 | /* Maximum number of class in class_symtab before relocation is needed. */ | |
71 | ||
72 | static int class_symtab_space; | |
73 | ||
74 | struct symtab * | |
75 | get_java_class_symtab () | |
76 | { | |
77 | if (class_symtab == NULL) | |
78 | { | |
79 | struct objfile *objfile = get_dynamics_objfile(); | |
80 | struct blockvector *bv; | |
81 | struct block *bl; | |
82 | class_symtab = allocate_symtab ("<java-classes>", objfile); | |
83 | class_symtab->language = language_java; | |
84 | bv = (struct blockvector *) | |
85 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct blockvector)); | |
86 | BLOCKVECTOR_NBLOCKS (bv) = 1; | |
87 | BLOCKVECTOR (class_symtab) = bv; | |
88 | ||
89 | /* Allocate dummy STATIC_BLOCK. */ | |
90 | bl = (struct block *) | |
91 | obstack_alloc (&objfile->symbol_obstack, sizeof (struct block)); | |
92 | BLOCK_NSYMS (bl) = 0; | |
93 | BLOCK_START (bl) = 0; | |
94 | BLOCK_END (bl) = 0; | |
95 | BLOCK_FUNCTION (bl) = NULL; | |
96 | BLOCK_SUPERBLOCK (bl) = NULL; | |
97 | BLOCK_GCC_COMPILED (bl) = 0; | |
98 | BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK) = bl; | |
99 | ||
100 | /* Allocate GLOBAL_BLOCK. This has to be relocatable. */ | |
101 | class_symtab_space = 128; | |
102 | bl = (struct block *) | |
103 | mmalloc (objfile->md, | |
104 | sizeof (struct block) | |
105 | + ((class_symtab_space - 1) * sizeof (struct symbol *))); | |
106 | *bl = *BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
107 | BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = bl; | |
108 | class_symtab->free_ptr = (char *) bl; | |
109 | } | |
110 | return class_symtab; | |
111 | } | |
112 | ||
113 | static void | |
114 | add_class_symtab_symbol (sym) | |
115 | struct symbol *sym; | |
116 | { | |
117 | struct symtab *symtab = get_java_class_symtab (); | |
118 | struct blockvector *bv = BLOCKVECTOR (symtab); | |
119 | struct block *bl = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
120 | if (BLOCK_NSYMS (bl) >= class_symtab_space) | |
121 | { | |
122 | /* Need to re-allocate. */ | |
123 | class_symtab_space *= 2; | |
124 | bl = (struct block *) | |
125 | mrealloc (symtab->objfile->md, bl, | |
126 | sizeof (struct block) | |
127 | + ((class_symtab_space - 1) * sizeof (struct symbol *))); | |
128 | class_symtab->free_ptr = (char *) bl; | |
129 | BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = bl; | |
130 | } | |
131 | ||
132 | BLOCK_SYM (bl, BLOCK_NSYMS (bl)) = sym; | |
133 | BLOCK_NSYMS (bl) = BLOCK_NSYMS (bl) + 1; | |
134 | } | |
135 | ||
136 | struct symbol * | |
137 | add_class_symbol (type, addr) | |
138 | struct type *type; | |
139 | CORE_ADDR addr; | |
140 | { | |
141 | struct symbol *sym; | |
142 | sym = (struct symbol *) | |
143 | obstack_alloc (&dynamics_objfile->symbol_obstack, sizeof (struct symbol)); | |
144 | memset (sym, 0, sizeof (struct symbol)); | |
145 | SYMBOL_LANGUAGE (sym) = language_java; | |
146 | SYMBOL_NAME (sym) = TYPE_NAME (type); | |
147 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
148 | /* SYMBOL_VALUE (sym) = valu;*/ | |
149 | SYMBOL_TYPE (sym) = type; | |
150 | SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE; | |
151 | SYMBOL_VALUE_ADDRESS (sym) = addr; | |
152 | return sym; | |
153 | } | |
154 | #endif | |
155 | ||
156 | struct type * | |
157 | java_lookup_class (name) | |
158 | char *name; | |
159 | { | |
160 | struct symbol *sym; | |
161 | sym = lookup_symbol (name, expression_context_block, STRUCT_NAMESPACE, | |
162 | (int *) 0, (struct symtab **) NULL); | |
166606b7 PB |
163 | if (sym != NULL) |
164 | return SYMBOL_TYPE (sym); | |
165 | #if 0 | |
166 | CORE_ADDR addr; | |
167 | if (called from parser) | |
7a9eb4c4 | 168 | { |
166606b7 PB |
169 | call lookup_class (or similar) in inferior; |
170 | if not found: | |
171 | return NULL; | |
172 | addr = found in inferior; | |
7a9eb4c4 | 173 | } |
166606b7 PB |
174 | else |
175 | addr = 0; | |
176 | struct type *type; | |
177 | type = alloc_type (objfile); | |
178 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
179 | INIT_CPLUS_SPECIFIC (type); | |
180 | TYPE_NAME (type) = obsavestring (name, strlen(name), &objfile->type_obstack); | |
181 | TYPE_FLAGS (type) |= TYPE_FLAG_STUB; | |
182 | TYPE ? = addr; | |
183 | return type; | |
184 | #else | |
185 | /* FIXME - should search inferior's symbol table. */ | |
186 | return NULL; | |
187 | #endif | |
7a9eb4c4 PB |
188 | } |
189 | ||
190 | /* Return a nul-terminated string (allocated on OBSTACK) for | |
191 | a name given by NAME (which has type Utf8Const*). */ | |
192 | ||
193 | char * | |
194 | get_java_utf8_name (obstack, name) | |
195 | struct obstack *obstack; | |
196 | value_ptr name; | |
197 | { | |
198 | char *chrs; | |
199 | value_ptr temp = name; | |
d2e131a1 PB |
200 | int name_length; |
201 | CORE_ADDR data_addr; | |
202 | temp = value_struct_elt (&temp, NULL, "length", NULL, "structure"); | |
203 | name_length = (int) value_as_long (temp); | |
204 | data_addr = VALUE_ADDRESS (temp) + VALUE_OFFSET (temp) | |
205 | + TYPE_LENGTH (VALUE_TYPE (temp)); | |
7a9eb4c4 PB |
206 | chrs = obstack_alloc (obstack, name_length+1); |
207 | chrs [name_length] = '\0'; | |
d2e131a1 | 208 | read_memory_section (data_addr, chrs, name_length, NULL); |
7a9eb4c4 PB |
209 | return chrs; |
210 | } | |
211 | ||
212 | value_ptr | |
213 | java_class_from_object (obj_val) | |
214 | value_ptr obj_val; | |
215 | { | |
216 | value_ptr dtable_val = value_struct_elt (&obj_val, NULL, "dtable", NULL, "structure"); | |
217 | return value_struct_elt (&dtable_val, NULL, "class", NULL, "structure"); | |
218 | } | |
219 | ||
220 | /* Check if CLASS_IS_PRIMITIVE(value of clas): */ | |
221 | int | |
222 | java_class_is_primitive (clas) | |
223 | value_ptr clas; | |
224 | { | |
225 | value_ptr dtable = value_struct_elt (&clas, NULL, "dtable", NULL, "struct"); | |
226 | CORE_ADDR i = value_as_pointer (dtable); | |
227 | return (int) (i & 0x7fffffff) == (int) 0x7fffffff; | |
228 | } | |
229 | ||
230 | /* Read a Kaffe Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */ | |
231 | ||
232 | struct type * | |
233 | type_from_class (clas) | |
234 | value_ptr clas; | |
235 | { | |
236 | struct type *type; | |
7a9eb4c4 PB |
237 | char *name; |
238 | value_ptr temp; | |
fc655dc2 | 239 | struct objfile *objfile; |
166606b7 | 240 | value_ptr utf8_name; |
7a9eb4c4 PB |
241 | char *nptr; |
242 | CORE_ADDR addr; | |
243 | struct block *bl; | |
166606b7 | 244 | int i; |
7a9eb4c4 | 245 | int is_array = 0; |
7a9eb4c4 PB |
246 | |
247 | type = check_typedef (VALUE_TYPE (clas)); | |
248 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
249 | { | |
250 | if (value_logical_not (clas)) | |
251 | return NULL; | |
252 | clas = value_ind (clas); | |
253 | } | |
254 | addr = VALUE_ADDRESS (clas) + VALUE_OFFSET (clas); | |
255 | ||
fc655dc2 | 256 | #if 0 |
7a9eb4c4 PB |
257 | get_java_class_symtab (); |
258 | bl = BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab), GLOBAL_BLOCK); | |
259 | for (i = BLOCK_NSYMS (bl); --i >= 0; ) | |
260 | { | |
261 | struct symbol *sym = BLOCK_SYM (bl, i); | |
262 | if (SYMBOL_VALUE_ADDRESS (sym) == addr) | |
263 | return SYMBOL_TYPE (sym); | |
264 | } | |
fc655dc2 | 265 | #endif |
7a9eb4c4 | 266 | |
fc655dc2 | 267 | objfile = get_dynamics_objfile(); |
7a9eb4c4 PB |
268 | if (java_class_is_primitive (clas)) |
269 | { | |
270 | value_ptr sig; | |
271 | temp = clas; | |
272 | sig = value_struct_elt (&temp, NULL, "msize", NULL, "structure"); | |
273 | return java_primitive_type (value_as_long (sig)); | |
274 | } | |
275 | ||
276 | /* Get Class name. */ | |
277 | /* if clasloader non-null, prepend loader address. FIXME */ | |
278 | temp = clas; | |
279 | utf8_name = value_struct_elt (&temp, NULL, "name", NULL, "structure"); | |
280 | name = get_java_utf8_name (&objfile->type_obstack, utf8_name); | |
fc655dc2 PB |
281 | for (nptr = name; *nptr != 0; nptr++) |
282 | { | |
283 | if (*nptr == '/') | |
284 | *nptr = '.'; | |
285 | } | |
286 | ||
287 | type = java_lookup_class (name); | |
288 | if (type != NULL) | |
289 | return type; | |
7a9eb4c4 PB |
290 | |
291 | type = alloc_type (objfile); | |
292 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
293 | INIT_CPLUS_SPECIFIC (type); | |
294 | ||
295 | if (name[0] == '[') | |
296 | { | |
297 | is_array = 1; | |
298 | temp = clas; | |
299 | /* Set array element type. */ | |
300 | temp = value_struct_elt (&temp, NULL, "methods", NULL, "structure"); | |
301 | VALUE_TYPE (temp) = lookup_pointer_type (VALUE_TYPE (clas)); | |
302 | TYPE_TARGET_TYPE (type) = type_from_class (temp); | |
303 | } | |
7a9eb4c4 PB |
304 | |
305 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
306 | TYPE_NAME (type) = name; | |
307 | ||
308 | add_class_symtab_symbol (add_class_symbol (type, addr)); | |
166606b7 PB |
309 | return java_link_class_type (type, clas); |
310 | } | |
311 | ||
312 | /* Fill in class TYPE with data from the CLAS value. */ | |
313 | ||
314 | struct type * | |
315 | java_link_class_type (type, clas) | |
316 | struct type *type; | |
317 | value_ptr clas; | |
318 | { | |
319 | value_ptr temp; | |
320 | char *unqualified_name; | |
321 | char *name = TYPE_NAME (type); | |
322 | int ninterfaces, nfields, nmethods; | |
323 | int type_is_object = 0; | |
324 | struct fn_field *fn_fields; | |
325 | struct fn_fieldlist *fn_fieldlists; | |
326 | value_ptr fields, field, method, methods; | |
327 | int i, j; | |
328 | struct objfile *objfile = get_dynamics_objfile(); | |
329 | struct type *tsuper; | |
330 | ||
331 | unqualified_name = strrchr (name, '.'); | |
332 | if (unqualified_name == NULL) | |
333 | unqualified_name = name; | |
7a9eb4c4 PB |
334 | |
335 | temp = clas; | |
336 | temp = value_struct_elt (&temp, NULL, "superclass", NULL, "structure"); | |
337 | if (name != NULL && strcmp (name, "java.lang.Object") == 0) | |
338 | { | |
339 | tsuper = get_java_object_type (); | |
340 | if (tsuper && TYPE_CODE (tsuper) == TYPE_CODE_PTR) | |
341 | tsuper = TYPE_TARGET_TYPE (tsuper); | |
342 | type_is_object = 1; | |
343 | } | |
344 | else | |
345 | tsuper = type_from_class (temp); | |
346 | ||
347 | #if 1 | |
348 | ninterfaces = 0; | |
349 | #else | |
350 | temp = clas; | |
351 | ninterfaces = value_as_long (value_struct_elt (&temp, NULL, "interface_len", NULL, "structure")); | |
352 | #endif | |
353 | TYPE_N_BASECLASSES (type) = (tsuper == NULL ? 0 : 1) + ninterfaces; | |
354 | temp = clas; | |
355 | nfields = value_as_long (value_struct_elt (&temp, NULL, "nfields", NULL, "structure")); | |
356 | nfields += TYPE_N_BASECLASSES (type); | |
fc655dc2 | 357 | nfields++; /* Add one for dummy "class" field. */ |
7a9eb4c4 PB |
358 | TYPE_NFIELDS (type) = nfields; |
359 | TYPE_FIELDS (type) = (struct field *) | |
360 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
361 | ||
362 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
363 | ||
364 | TYPE_FIELD_PRIVATE_BITS (type) = | |
365 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
366 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
367 | ||
368 | TYPE_FIELD_PROTECTED_BITS (type) = | |
369 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
370 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
371 | ||
372 | TYPE_FIELD_IGNORE_BITS (type) = | |
373 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
374 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
375 | ||
376 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) | |
377 | TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type))); | |
378 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type)); | |
379 | ||
380 | if (tsuper != NULL) | |
381 | { | |
382 | TYPE_BASECLASS (type, 0) = tsuper; | |
383 | if (type_is_object) | |
384 | SET_TYPE_FIELD_PRIVATE (type, 0); | |
385 | } | |
386 | ||
387 | ||
388 | temp = clas; | |
389 | temp = value_struct_elt (&temp, NULL, "bfsize", NULL, "structure"); | |
d2e131a1 | 390 | TYPE_LENGTH (type) = value_as_long (temp); |
7a9eb4c4 PB |
391 | |
392 | fields = NULL; | |
fc655dc2 PB |
393 | nfields--; /* First set up dummy "class" field. */ |
394 | SET_FIELD_PHYSADDR (TYPE_FIELD (type, nfields), | |
395 | VALUE_ADDRESS (clas) + VALUE_OFFSET (clas)); | |
396 | TYPE_FIELD_NAME (type, nfields) = "super"; | |
397 | TYPE_FIELD_TYPE (type, nfields) = VALUE_TYPE (clas); | |
398 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
399 | ||
7a9eb4c4 PB |
400 | for (i = TYPE_N_BASECLASSES (type); i < nfields; i++) |
401 | { | |
402 | int accflags; | |
403 | int boffset; | |
7a9eb4c4 PB |
404 | if (fields == NULL) |
405 | { | |
406 | temp = clas; | |
407 | fields = value_struct_elt (&temp, NULL, "fields", NULL, "structure"); | |
408 | field = value_ind (fields); | |
409 | } | |
410 | else | |
411 | { /* Re-use field value for next field. */ | |
412 | VALUE_ADDRESS (field) += TYPE_LENGTH (VALUE_TYPE (field)); | |
413 | VALUE_LAZY (field) = 1; | |
414 | } | |
415 | temp = field; | |
416 | temp = value_struct_elt (&temp, NULL, "name", NULL, "structure"); | |
417 | TYPE_FIELD_NAME (type, i) = | |
418 | get_java_utf8_name (&objfile->type_obstack, temp); | |
419 | temp = field; | |
420 | accflags = value_as_long (value_struct_elt (&temp, NULL, "accflags", | |
421 | NULL, "structure")); | |
d2e131a1 PB |
422 | temp = field; |
423 | temp = value_struct_elt (&temp, NULL, "info", NULL, "structure"); | |
7a9eb4c4 PB |
424 | boffset = value_as_long (value_struct_elt (&temp, NULL, "boffset", |
425 | NULL, "structure")); | |
426 | if (accflags & 0x0001) /* public access */ | |
427 | { | |
428 | /* ??? */ | |
429 | } | |
430 | if (accflags & 0x0002) /* private access */ | |
431 | { | |
432 | SET_TYPE_FIELD_PRIVATE (type, i); | |
433 | } | |
434 | if (accflags & 0x0004) /* protected access */ | |
435 | { | |
436 | SET_TYPE_FIELD_PROTECTED (type, i); | |
437 | } | |
438 | if (accflags & 0x0008) /* ACC_STATIC */ | |
d2e131a1 | 439 | SET_FIELD_PHYSADDR(TYPE_FIELD(type, i), boffset); |
7a9eb4c4 | 440 | else |
d2e131a1 | 441 | TYPE_FIELD_BITPOS (type, i) = 8 * boffset; |
7a9eb4c4 PB |
442 | if (accflags & 0x8000) /* FIELD_UNRESOLVED_FLAG */ |
443 | { | |
444 | TYPE_FIELD_TYPE (type, i) = get_java_object_type (); /* FIXME */ | |
445 | } | |
446 | else | |
447 | { | |
448 | struct type *ftype; | |
449 | temp = field; | |
450 | temp = value_struct_elt (&temp, NULL, "type", NULL, "structure"); | |
451 | ftype = type_from_class (temp); | |
452 | if (TYPE_CODE (ftype) == TYPE_CODE_STRUCT) | |
453 | ftype = lookup_pointer_type (ftype); | |
454 | TYPE_FIELD_TYPE (type, i) = ftype; | |
455 | } | |
456 | } | |
457 | ||
458 | temp = clas; | |
459 | nmethods = value_as_long (value_struct_elt (&temp, NULL, "nmethods", | |
460 | NULL, "structure")); | |
461 | TYPE_NFN_FIELDS_TOTAL (type) = nmethods; | |
462 | j = nmethods * sizeof (struct fn_field); | |
463 | fn_fields = (struct fn_field*) | |
464 | obstack_alloc (&dynamics_objfile->symbol_obstack, j); | |
465 | memset (fn_fields, 0, j); | |
466 | fn_fieldlists = (struct fn_fieldlist*) | |
467 | alloca (nmethods * sizeof (struct fn_fieldlist)); | |
468 | ||
469 | methods = NULL; | |
470 | for (i = 0; i < nmethods; i++) | |
471 | { | |
472 | char *mname; | |
473 | int k; | |
474 | if (methods == NULL) | |
475 | { | |
476 | temp = clas; | |
477 | methods = value_struct_elt (&temp, NULL, "methods", NULL, "structure"); | |
478 | method = value_ind (methods); | |
479 | } | |
480 | else | |
481 | { /* Re-use method value for next method. */ | |
482 | VALUE_ADDRESS (method) += TYPE_LENGTH (VALUE_TYPE (method)); | |
483 | VALUE_LAZY (method) = 1; | |
484 | } | |
485 | ||
486 | /* Get method name. */ | |
487 | temp = method; | |
488 | temp = value_struct_elt (&temp, NULL, "name", NULL, "structure"); | |
489 | mname = get_java_utf8_name (&objfile->type_obstack, temp); | |
490 | if (strcmp (mname, "<init>") == 0) | |
491 | mname = unqualified_name; | |
492 | ||
493 | /* Check for an existing method with the same name. | |
494 | * This makes building the fn_fieldslists an O(nmethods**2) | |
495 | * operation. That could be using hashing, but I doubt it | |
496 | * is worth it. Note that we do maintain the order of methods | |
497 | * in the inferior's Method table (as long as that is grouped | |
498 | * by method name), which I think is desirable. --PB */ | |
499 | for (k = 0, j = TYPE_NFN_FIELDS (type); ; ) | |
500 | { | |
501 | if (--j < 0) | |
502 | { /* No match - new method name. */ | |
503 | j = TYPE_NFN_FIELDS(type)++; | |
504 | fn_fieldlists[j].name = mname; | |
505 | fn_fieldlists[j].length = 1; | |
506 | fn_fieldlists[j].fn_fields = &fn_fields[i]; | |
507 | k = i; | |
508 | break; | |
509 | } | |
510 | if (strcmp (mname, fn_fieldlists[j].name) == 0) | |
511 | { /* Found an existing method with the same name. */ | |
512 | int l; | |
513 | if (mname != unqualified_name) | |
514 | obstack_free (&objfile->type_obstack, mname); | |
515 | mname = fn_fieldlists[j].name; | |
516 | fn_fieldlists[j].length++; | |
517 | k = i - k; /* Index of new slot. */ | |
518 | /* Shift intervening fn_fields (between k and i) down. */ | |
519 | for (l = i; l > k; l--) fn_fields[l] = fn_fields[l-1]; | |
520 | for (l = TYPE_NFN_FIELDS (type); --l > j; ) | |
521 | fn_fieldlists[l].fn_fields++; | |
522 | break; | |
523 | } | |
524 | k += fn_fieldlists[j].length; | |
525 | } | |
526 | fn_fields[k].physname = ""; | |
527 | fn_fields[k].is_stub = 1; | |
528 | fn_fields[k].type = make_function_type (java_void_type, NULL); /* FIXME*/ | |
529 | TYPE_CODE (fn_fields[k].type) = TYPE_CODE_METHOD; | |
530 | } | |
531 | ||
532 | j = TYPE_NFN_FIELDS(type) * sizeof (struct fn_fieldlist); | |
533 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist*) | |
534 | obstack_alloc (&dynamics_objfile->symbol_obstack, j); | |
535 | memcpy (TYPE_FN_FIELDLISTS (type), fn_fieldlists, j); | |
536 | ||
537 | return type; | |
538 | } | |
539 | ||
540 | struct type* | |
541 | get_java_object_type () | |
542 | { | |
543 | return java_object_type; | |
544 | } | |
545 | ||
546 | int | |
547 | is_object_type (type) | |
548 | struct type *type; | |
549 | { | |
550 | CHECK_TYPEDEF (type); | |
551 | if (TYPE_CODE (type) == TYPE_CODE_PTR) | |
552 | { | |
553 | struct type *ttype = check_typedef (TYPE_TARGET_TYPE (type)); | |
554 | char *name; | |
555 | if (TYPE_CODE (ttype) != TYPE_CODE_STRUCT) | |
556 | return 0; | |
557 | while (TYPE_N_BASECLASSES (ttype) > 0) | |
558 | ttype = TYPE_BASECLASS (ttype, 0); | |
559 | name = TYPE_NAME (ttype); | |
560 | if (name != NULL && strcmp (name, "java.lang.Object") == 0) | |
561 | return 1; | |
562 | name = TYPE_NFIELDS (ttype) > 0 ? TYPE_FIELD_NAME (ttype, 0) : (char*)0; | |
563 | if (name != NULL && strcmp (name, "dtable") == 0) | |
564 | { | |
565 | if (java_object_type == NULL) | |
566 | java_object_type = type; | |
567 | return 1; | |
568 | } | |
569 | } | |
570 | return 0; | |
571 | } | |
572 | ||
573 | struct type* | |
574 | java_primitive_type (signature) | |
575 | int signature; | |
576 | { | |
577 | switch (signature) | |
578 | { | |
579 | case 'B': return java_byte_type; | |
580 | case 'S': return java_short_type; | |
581 | case 'I': return java_int_type; | |
582 | case 'J': return java_long_type; | |
583 | case 'Z': return java_boolean_type; | |
584 | case 'C': return java_char_type; | |
585 | case 'F': return java_float_type; | |
586 | case 'D': return java_double_type; | |
587 | case 'V': return java_void_type; | |
588 | } | |
589 | error ("unknown signature '%c' for primitive type", (char) signature); | |
590 | } | |
591 | ||
fc655dc2 PB |
592 | /* Return the demangled name of the Java type signature string SIGNATURE, |
593 | as a freshly allocated copy. */ | |
594 | ||
595 | char * | |
596 | java_demangle_type_signature (signature) | |
597 | char *signature; | |
598 | { | |
599 | int array = 0; | |
600 | char *result; | |
601 | char *ptr; | |
602 | int i; | |
603 | while (*signature == '[') | |
604 | { | |
605 | array++; | |
606 | signature++; | |
607 | } | |
608 | switch (signature[0]) | |
609 | { | |
610 | case 'L': | |
611 | /* Substract 2 for 'L' and ';', but add 1 for final nul. */ | |
612 | result = xmalloc (strlen (signature) - 1 + 2 * array); | |
613 | signature++; | |
614 | ptr = result; | |
615 | for ( ; *signature != ';' && *signature != '\0'; signature++) | |
616 | { | |
617 | if (*signature == '/') | |
618 | *ptr++ = '.'; | |
619 | else | |
620 | *ptr++ = *signature; | |
621 | } | |
622 | break; | |
623 | default: | |
624 | ptr = TYPE_NAME (java_primitive_type (signature[0])); | |
625 | i = strlen (ptr); | |
626 | result = xmalloc (i + 1 + 2 * array); | |
627 | strcpy (result, ptr); | |
628 | ptr = result + i; | |
629 | break; | |
630 | } | |
631 | while (--array >= 0) | |
632 | { | |
633 | *ptr++ = '['; | |
634 | *ptr++ = ']'; | |
635 | } | |
636 | *ptr = '\0'; | |
637 | return result; | |
638 | } | |
639 | ||
640 | struct type * | |
641 | java_lookup_type (signature) | |
642 | char *signature; | |
643 | { | |
644 | switch (signature[0]) | |
645 | { | |
646 | case 'L': | |
647 | case '[': | |
648 | error ("java_lookup_type not fully inmplemented"); | |
649 | default: | |
650 | return java_primitive_type (signature[0]); | |
651 | } | |
652 | } | |
653 | ||
7a9eb4c4 PB |
654 | /* Return the type of TYPE followed by DIMS pairs of [ ]. |
655 | If DIMS == 0, TYPE is returned. */ | |
656 | ||
657 | struct type * | |
658 | java_array_type (type, dims) | |
659 | struct type *type; | |
660 | int dims; | |
661 | { | |
662 | if (dims == 0) | |
663 | return type; | |
664 | error ("array types not implemented"); | |
665 | } | |
666 | ||
667 | /* Create a Java string in the inferior from a (Utf8) literal. */ | |
668 | ||
669 | value_ptr | |
670 | java_value_string (ptr, len) | |
671 | char *ptr; | |
672 | int len; | |
673 | { | |
674 | error ("not implemented - java_value_string"); /* FIXME */ | |
675 | } | |
676 | ||
677 | static value_ptr | |
678 | evaluate_subexp_java (expect_type, exp, pos, noside) | |
679 | struct type *expect_type; | |
680 | register struct expression *exp; | |
681 | register int *pos; | |
682 | enum noside noside; | |
683 | { | |
684 | int pc = *pos; | |
685 | int i; | |
686 | enum exp_opcode op = exp->elts[*pos].opcode; | |
687 | value_ptr arg1; | |
688 | switch (op) | |
689 | { | |
690 | case UNOP_IND: | |
691 | if (noside == EVAL_SKIP) | |
692 | goto standard; | |
693 | (*pos)++; | |
694 | arg1 = evaluate_subexp_standard (expect_type, exp, pos, EVAL_NORMAL); | |
695 | if (is_object_type (VALUE_TYPE (arg1))) | |
696 | { | |
697 | struct type *type = type_from_class (java_class_from_object (arg1)); | |
698 | arg1 = value_cast (lookup_pointer_type (type), arg1); | |
699 | } | |
700 | if (noside == EVAL_SKIP) | |
701 | goto nosideret; | |
702 | return value_ind (arg1); | |
703 | case OP_STRING: | |
704 | (*pos)++; | |
705 | i = longest_to_int (exp->elts[pc + 1].longconst); | |
706 | (*pos) += 3 + BYTES_TO_EXP_ELEM (i + 1); | |
707 | if (noside == EVAL_SKIP) | |
708 | goto nosideret; | |
709 | return java_value_string (&exp->elts[pc + 2].string, i); | |
fc655dc2 PB |
710 | case STRUCTOP_STRUCT: |
711 | arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside); | |
712 | /* Convert object field (such as .class) to reference. */ | |
713 | if (TYPE_CODE (VALUE_TYPE (arg1)) == TYPE_CODE_STRUCT) | |
714 | arg1 = value_addr (arg1); | |
715 | return arg1; | |
40b647e9 FF |
716 | default: |
717 | break; | |
7a9eb4c4 PB |
718 | } |
719 | standard: | |
720 | return evaluate_subexp_standard (expect_type, exp, pos, noside); | |
721 | nosideret: | |
722 | return value_from_longest (builtin_type_long, (LONGEST) 1); | |
723 | } | |
724 | ||
725 | static struct type * | |
726 | java_create_fundamental_type (objfile, typeid) | |
727 | struct objfile *objfile; | |
728 | int typeid; | |
729 | { | |
730 | switch (typeid) | |
731 | { | |
732 | case FT_VOID: return java_void_type; | |
733 | case FT_BOOLEAN: return java_boolean_type; | |
734 | case FT_CHAR: return java_char_type; | |
735 | case FT_FLOAT: return java_float_type; | |
736 | case FT_DBL_PREC_FLOAT: return java_double_type; | |
737 | case FT_BYTE: case FT_SIGNED_CHAR: return java_byte_type; | |
738 | case FT_SHORT: case FT_SIGNED_SHORT: return java_short_type; | |
739 | case FT_INTEGER: case FT_SIGNED_INTEGER: return java_int_type; | |
740 | case FT_LONG: case FT_SIGNED_LONG: return java_long_type; | |
741 | } | |
742 | return c_create_fundamental_type (objfile, typeid); | |
743 | } | |
744 | ||
745 | /* Table mapping opcodes into strings for printing operators | |
746 | and precedences of the operators. */ | |
747 | ||
748 | const struct op_print java_op_print_tab[] = | |
749 | { | |
750 | {",", BINOP_COMMA, PREC_COMMA, 0}, | |
751 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
752 | {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
753 | {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
754 | {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
755 | {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
756 | {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
757 | {"==", BINOP_EQUAL, PREC_EQUAL, 0}, | |
758 | {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
759 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
760 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
761 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
762 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
763 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
764 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
765 | #if 0 | |
766 | {">>>", BINOP_???, PREC_SHIFT, 0}, | |
767 | #endif | |
768 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
769 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
770 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
771 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
772 | {"%", BINOP_REM, PREC_MUL, 0}, | |
773 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
774 | {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
775 | {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
776 | {"*", UNOP_IND, PREC_PREFIX, 0}, | |
777 | #if 0 | |
778 | {"instanceof", ???, ???, 0}, | |
779 | #endif | |
780 | {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, | |
781 | {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, | |
782 | {NULL, 0, 0, 0} | |
783 | }; | |
784 | ||
785 | const struct language_defn java_language_defn = { | |
786 | "java", /* Language name */ | |
787 | language_java, | |
788 | c_builtin_types, | |
789 | range_check_off, | |
790 | type_check_off, | |
791 | java_parse, | |
792 | java_error, | |
793 | evaluate_subexp_java, | |
794 | c_printchar, /* Print a character constant */ | |
795 | c_printstr, /* Function to print string constant */ | |
796 | java_create_fundamental_type, /* Create fundamental type in this language */ | |
166606b7 | 797 | java_print_type, /* Print a type using appropriate syntax */ |
7a9eb4c4 PB |
798 | java_val_print, /* Print a value using appropriate syntax */ |
799 | java_value_print, /* Print a top-level value */ | |
800 | {"", "", "", ""}, /* Binary format info */ | |
801 | {"0%lo", "0", "o", ""}, /* Octal format info */ | |
802 | {"%ld", "", "d", ""}, /* Decimal format info */ | |
803 | {"0x%lx", "0x", "x", ""}, /* Hex format info */ | |
804 | java_op_print_tab, /* expression operators for printing */ | |
805 | 1, /* c-style arrays */ | |
806 | 0, /* String lower bound */ | |
807 | &builtin_type_char, /* Type of string elements */ | |
808 | LANG_MAGIC | |
809 | }; | |
810 | ||
811 | void | |
812 | _initialize_jave_language () | |
813 | { | |
814 | ||
815 | java_int_type = init_type (TYPE_CODE_INT, 4, 0, "int", NULL); | |
816 | java_short_type = init_type (TYPE_CODE_INT, 2, 0, "short", NULL); | |
817 | java_long_type = init_type (TYPE_CODE_INT, 8, 0, "long", NULL); | |
818 | java_byte_type = init_type (TYPE_CODE_INT, 1, 0, "byte", NULL); | |
819 | java_boolean_type= init_type (TYPE_CODE_BOOL, 1, 0, "boolean", NULL); | |
820 | java_char_type = init_type (TYPE_CODE_CHAR, 2, 0, "char", NULL); | |
821 | java_float_type = init_type (TYPE_CODE_FLT, 4, 0, "float", NULL); | |
822 | java_double_type = init_type (TYPE_CODE_FLT, 8, 0, "double", NULL); | |
823 | java_void_type = init_type (TYPE_CODE_VOID, 1, 0, "void", NULL); | |
824 | ||
825 | add_language (&java_language_defn); | |
826 | } | |
827 | ||
fc655dc2 PB |
828 | /* Cleanup code that should be run on every "run". |
829 | We should use make_run_cleanup to have this be called. | |
830 | But will that mess up values in value histry? FIXME */ | |
7a9eb4c4 PB |
831 | |
832 | void java_rerun_cleanup () | |
833 | { | |
834 | if (class_symtab != NULL) | |
835 | { | |
836 | free_symtab (class_symtab); /* ??? */ | |
837 | class_symtab = NULL; | |
838 | } | |
839 | if (dynamics_objfile != NULL) | |
840 | { | |
841 | free_objfile (dynamics_objfile); | |
842 | dynamics_objfile = NULL; | |
843 | } | |
844 | ||
845 | java_object_type = NULL; | |
846 | } |