1 /* Java language support routines for GDB, the GNU debugger.
3 Copyright (C) 1997, 1998, 1999, 2000, 2003, 2004, 2005, 2007, 2008, 2009,
4 2010 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include "expression.h"
25 #include "parser-defs.h"
31 #include "gdb_string.h"
38 #include "dictionary.h"
40 #include "gdb_assert.h"
44 extern void _initialize_java_language (void);
46 static int java_demangled_signature_length (char *);
47 static void java_demangled_signature_copy (char *, char *);
49 static struct symtab *get_java_class_symtab (struct gdbarch *gdbarch);
50 static char *get_java_utf8_name (struct obstack *obstack, struct value *name);
51 static int java_class_is_primitive (struct value *clas);
52 static struct value *java_value_string (char *ptr, int len);
54 static void java_emit_char (int c, struct type *type,
55 struct ui_file * stream, int quoter);
57 static char *java_class_name_from_physname (const char *physname);
59 static const struct objfile_data *jv_dynamics_objfile_data_key;
60 static const struct objfile_data *jv_type_objfile_data_key;
62 /* This objfile contains symtabs that have been dynamically created
63 to record dynamically loaded Java classes and dynamically
64 compiled java methods. */
66 static struct objfile *dynamics_objfile = NULL;
68 /* symtab contains classes read from the inferior. */
70 static struct symtab *class_symtab = NULL;
72 static struct type *java_link_class_type (struct gdbarch *,
73 struct type *, struct value *);
75 /* A function called when the dynamics_objfile is freed. We use this
76 to clean up some internal state. */
78 jv_per_objfile_free (struct objfile *objfile, void *ignore)
80 gdb_assert (objfile == dynamics_objfile);
81 /* Clean up all our cached state. These objects are all allocated
82 in the dynamics_objfile, so we don't need to actually free
84 dynamics_objfile = NULL;
88 /* FIXME: carlton/2003-02-04: This is the main or only caller of
89 allocate_objfile with first argument NULL; as a result, this code
90 breaks every so often. Somebody should write a test case that
91 exercises GDB in various ways (e.g. something involving loading a
92 dynamic library) after this code has been called. */
94 static struct objfile *
95 get_dynamics_objfile (struct gdbarch *gdbarch)
97 if (dynamics_objfile == NULL)
99 /* Mark it as shared so that it is cleared when the inferior is
101 dynamics_objfile = allocate_objfile (NULL, OBJF_SHARED);
102 dynamics_objfile->gdbarch = gdbarch;
103 /* We don't have any data to store, but this lets us get a
104 notification when the objfile is destroyed. Since we have to
105 store a non-NULL value, we just pick something arbitrary and
107 set_objfile_data (dynamics_objfile, jv_dynamics_objfile_data_key,
110 return dynamics_objfile;
113 static void free_class_block (struct symtab *symtab);
115 static struct symtab *
116 get_java_class_symtab (struct gdbarch *gdbarch)
118 if (class_symtab == NULL)
120 struct objfile *objfile = get_dynamics_objfile (gdbarch);
121 struct blockvector *bv;
123 class_symtab = allocate_symtab ("<java-classes>", objfile);
124 class_symtab->language = language_java;
125 bv = (struct blockvector *)
126 obstack_alloc (&objfile->objfile_obstack,
127 sizeof (struct blockvector) + sizeof (struct block *));
128 BLOCKVECTOR_NBLOCKS (bv) = 1;
129 BLOCKVECTOR (class_symtab) = bv;
131 /* Allocate dummy STATIC_BLOCK. */
132 bl = allocate_block (&objfile->objfile_obstack);
133 BLOCK_DICT (bl) = dict_create_linear (&objfile->objfile_obstack,
135 BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK) = bl;
137 /* Allocate GLOBAL_BLOCK. */
138 bl = allocate_block (&objfile->objfile_obstack);
139 BLOCK_DICT (bl) = dict_create_hashed_expandable ();
140 BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = bl;
141 class_symtab->free_func = free_class_block;
147 add_class_symtab_symbol (struct symbol *sym)
149 struct symtab *symtab
150 = get_java_class_symtab (get_objfile_arch (SYMBOL_SYMTAB (sym)->objfile));
151 struct blockvector *bv = BLOCKVECTOR (symtab);
152 dict_add_symbol (BLOCK_DICT (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)), sym);
155 static struct symbol *
156 add_class_symbol (struct type *type, CORE_ADDR addr)
159 sym = (struct symbol *)
160 obstack_alloc (&dynamics_objfile->objfile_obstack, sizeof (struct symbol));
161 memset (sym, 0, sizeof (struct symbol));
162 SYMBOL_LANGUAGE (sym) = language_java;
163 SYMBOL_SET_LINKAGE_NAME (sym, TYPE_TAG_NAME (type));
164 SYMBOL_CLASS (sym) = LOC_TYPEDEF;
165 /* SYMBOL_VALUE (sym) = valu; */
166 SYMBOL_TYPE (sym) = type;
167 SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN;
168 SYMBOL_VALUE_ADDRESS (sym) = addr;
172 /* Free the dynamic symbols block. */
174 free_class_block (struct symtab *symtab)
176 struct blockvector *bv = BLOCKVECTOR (symtab);
177 struct block *bl = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
179 dict_free (BLOCK_DICT (bl));
183 java_lookup_class (char *name)
186 sym = lookup_symbol (name, expression_context_block, STRUCT_DOMAIN, NULL);
188 return SYMBOL_TYPE (sym);
191 if (called from parser)
193 call lookup_class (or similar) in inferior;
197 addr = found in inferior;
202 type = alloc_type (objfile);
203 TYPE_CODE (type) = TYPE_CODE_STRUCT;
204 INIT_CPLUS_SPECIFIC (type);
205 TYPE_TAG_NAME (type) = obsavestring (name, strlen (name), &objfile->objfile_obstack);
206 TYPE_STUB (type) = 1;
210 /* FIXME - should search inferior's symbol table. */
215 /* Return a nul-terminated string (allocated on OBSTACK) for
216 a name given by NAME (which has type Utf8Const*). */
219 get_java_utf8_name (struct obstack *obstack, struct value *name)
222 struct value *temp = name;
225 temp = value_struct_elt (&temp, NULL, "length", NULL, "structure");
226 name_length = (int) value_as_long (temp);
227 data_addr = value_address (temp) + TYPE_LENGTH (value_type (temp));
228 chrs = obstack_alloc (obstack, name_length + 1);
229 chrs[name_length] = '\0';
230 read_memory (data_addr, (gdb_byte *) chrs, name_length);
235 java_class_from_object (struct value *obj_val)
237 /* This is all rather inefficient, since the offsets of vtable and
238 class are fixed. FIXME */
239 struct value *vtable_val;
241 if (TYPE_CODE (value_type (obj_val)) == TYPE_CODE_PTR
242 && TYPE_LENGTH (TYPE_TARGET_TYPE (value_type (obj_val))) == 0)
243 obj_val = value_at (get_java_object_type (),
244 value_as_address (obj_val));
246 vtable_val = value_struct_elt (&obj_val, NULL, "vtable", NULL, "structure");
247 return value_struct_elt (&vtable_val, NULL, "class", NULL, "structure");
250 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
252 java_class_is_primitive (struct value *clas)
254 struct value *vtable = value_struct_elt (&clas, NULL, "vtable", NULL, "struct");
255 CORE_ADDR i = value_as_address (vtable);
256 return (int) (i & 0x7fffffff) == (int) 0x7fffffff;
259 /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
262 type_from_class (struct gdbarch *gdbarch, struct value *clas)
267 struct objfile *objfile;
268 struct value *utf8_name;
273 struct dict_iterator iter;
277 type = check_typedef (value_type (clas));
278 if (TYPE_CODE (type) == TYPE_CODE_PTR)
280 if (value_logical_not (clas))
282 clas = value_ind (clas);
284 addr = value_address (clas);
287 get_java_class_symtab ();
288 bl = BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab), GLOBAL_BLOCK);
289 ALL_BLOCK_SYMBOLS (block, iter, sym)
291 if (SYMBOL_VALUE_ADDRESS (sym) == addr)
292 return SYMBOL_TYPE (sym);
296 objfile = get_dynamics_objfile (gdbarch);
297 if (java_class_is_primitive (clas))
301 sig = value_struct_elt (&temp, NULL, "method_count", NULL, "structure");
302 return java_primitive_type (gdbarch, value_as_long (sig));
305 /* Get Class name. */
306 /* if clasloader non-null, prepend loader address. FIXME */
308 utf8_name = value_struct_elt (&temp, NULL, "name", NULL, "structure");
309 name = get_java_utf8_name (&objfile->objfile_obstack, utf8_name);
310 for (nptr = name; *nptr != 0; nptr++)
316 type = java_lookup_class (name);
320 type = alloc_type (objfile);
321 TYPE_CODE (type) = TYPE_CODE_STRUCT;
322 INIT_CPLUS_SPECIFIC (type);
326 char *signature = name;
327 int namelen = java_demangled_signature_length (signature);
328 if (namelen > strlen (name))
329 name = obstack_alloc (&objfile->objfile_obstack, namelen + 1);
330 java_demangled_signature_copy (name, signature);
331 name[namelen] = '\0';
334 /* Set array element type. */
335 temp = value_struct_elt (&temp, NULL, "methods", NULL, "structure");
336 deprecated_set_value_type (temp, lookup_pointer_type (value_type (clas)));
337 TYPE_TARGET_TYPE (type) = type_from_class (gdbarch, temp);
340 ALLOCATE_CPLUS_STRUCT_TYPE (type);
341 TYPE_TAG_NAME (type) = name;
343 add_class_symtab_symbol (add_class_symbol (type, addr));
344 return java_link_class_type (gdbarch, type, clas);
347 /* Fill in class TYPE with data from the CLAS value. */
350 java_link_class_type (struct gdbarch *gdbarch,
351 struct type *type, struct value *clas)
354 char *unqualified_name;
355 char *name = TYPE_TAG_NAME (type);
356 int ninterfaces, nfields, nmethods;
357 int type_is_object = 0;
358 struct fn_field *fn_fields;
359 struct fn_fieldlist *fn_fieldlists;
360 struct value *fields;
361 struct value *methods;
362 struct value *method = NULL;
363 struct value *field = NULL;
365 struct objfile *objfile = get_dynamics_objfile (gdbarch);
368 gdb_assert (name != NULL);
369 unqualified_name = strrchr (name, '.');
370 if (unqualified_name == NULL)
371 unqualified_name = name;
374 temp = value_struct_elt (&temp, NULL, "superclass", NULL, "structure");
375 if (strcmp (name, "java.lang.Object") == 0)
377 tsuper = get_java_object_type ();
378 if (tsuper && TYPE_CODE (tsuper) == TYPE_CODE_PTR)
379 tsuper = TYPE_TARGET_TYPE (tsuper);
383 tsuper = type_from_class (gdbarch, temp);
389 ninterfaces = value_as_long (value_struct_elt (&temp, NULL, "interface_len", NULL, "structure"));
391 TYPE_N_BASECLASSES (type) = (tsuper == NULL ? 0 : 1) + ninterfaces;
393 nfields = value_as_long (value_struct_elt (&temp, NULL, "field_count", NULL, "structure"));
394 nfields += TYPE_N_BASECLASSES (type);
395 nfields++; /* Add one for dummy "class" field. */
396 TYPE_NFIELDS (type) = nfields;
397 TYPE_FIELDS (type) = (struct field *)
398 TYPE_ALLOC (type, sizeof (struct field) * nfields);
400 memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields);
402 TYPE_FIELD_PRIVATE_BITS (type) =
403 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
404 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields);
406 TYPE_FIELD_PROTECTED_BITS (type) =
407 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
408 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields);
410 TYPE_FIELD_IGNORE_BITS (type) =
411 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
412 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields);
414 TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *)
415 TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type)));
416 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type));
420 TYPE_BASECLASS (type, 0) = tsuper;
422 SET_TYPE_FIELD_PRIVATE (type, 0);
426 if (i > 2 && name[i - 1] == ']' && tsuper != NULL)
429 TYPE_LENGTH (type) = TYPE_LENGTH (tsuper) + 4; /* size with "length" */
434 temp = value_struct_elt (&temp, NULL, "size_in_bytes", NULL, "structure");
435 TYPE_LENGTH (type) = value_as_long (temp);
439 nfields--; /* First set up dummy "class" field. */
440 SET_FIELD_PHYSADDR (TYPE_FIELD (type, nfields), value_address (clas));
441 TYPE_FIELD_NAME (type, nfields) = "class";
442 TYPE_FIELD_TYPE (type, nfields) = value_type (clas);
443 SET_TYPE_FIELD_PRIVATE (type, nfields);
445 for (i = TYPE_N_BASECLASSES (type); i < nfields; i++)
452 fields = value_struct_elt (&temp, NULL, "fields", NULL, "structure");
453 field = value_ind (fields);
456 { /* Re-use field value for next field. */
458 = value_address (field) + TYPE_LENGTH (value_type (field));
459 set_value_address (field, addr);
460 set_value_lazy (field, 1);
463 temp = value_struct_elt (&temp, NULL, "name", NULL, "structure");
464 TYPE_FIELD_NAME (type, i) =
465 get_java_utf8_name (&objfile->objfile_obstack, temp);
467 accflags = value_as_long (value_struct_elt (&temp, NULL, "accflags",
470 temp = value_struct_elt (&temp, NULL, "info", NULL, "structure");
471 boffset = value_as_long (value_struct_elt (&temp, NULL, "boffset",
473 if (accflags & 0x0001) /* public access */
477 if (accflags & 0x0002) /* private access */
479 SET_TYPE_FIELD_PRIVATE (type, i);
481 if (accflags & 0x0004) /* protected access */
483 SET_TYPE_FIELD_PROTECTED (type, i);
485 if (accflags & 0x0008) /* ACC_STATIC */
486 SET_FIELD_PHYSADDR (TYPE_FIELD (type, i), boffset);
488 TYPE_FIELD_BITPOS (type, i) = 8 * boffset;
489 if (accflags & 0x8000) /* FIELD_UNRESOLVED_FLAG */
491 TYPE_FIELD_TYPE (type, i) = get_java_object_type (); /* FIXME */
497 temp = value_struct_elt (&temp, NULL, "type", NULL, "structure");
498 ftype = type_from_class (gdbarch, temp);
499 if (TYPE_CODE (ftype) == TYPE_CODE_STRUCT)
500 ftype = lookup_pointer_type (ftype);
501 TYPE_FIELD_TYPE (type, i) = ftype;
506 nmethods = value_as_long (value_struct_elt (&temp, NULL, "method_count",
508 TYPE_NFN_FIELDS_TOTAL (type) = nmethods;
509 j = nmethods * sizeof (struct fn_field);
510 fn_fields = (struct fn_field *)
511 obstack_alloc (&dynamics_objfile->objfile_obstack, j);
512 memset (fn_fields, 0, j);
513 fn_fieldlists = (struct fn_fieldlist *)
514 alloca (nmethods * sizeof (struct fn_fieldlist));
517 for (i = 0; i < nmethods; i++)
524 methods = value_struct_elt (&temp, NULL, "methods", NULL, "structure");
525 method = value_ind (methods);
528 { /* Re-use method value for next method. */
530 = value_address (method) + TYPE_LENGTH (value_type (method));
531 set_value_address (method, addr);
532 set_value_lazy (method, 1);
535 /* Get method name. */
537 temp = value_struct_elt (&temp, NULL, "name", NULL, "structure");
538 mname = get_java_utf8_name (&objfile->objfile_obstack, temp);
539 if (strcmp (mname, "<init>") == 0)
540 mname = unqualified_name;
542 /* Check for an existing method with the same name.
543 * This makes building the fn_fieldslists an O(nmethods**2)
544 * operation. That could be using hashing, but I doubt it
545 * is worth it. Note that we do maintain the order of methods
546 * in the inferior's Method table (as long as that is grouped
547 * by method name), which I think is desirable. --PB */
548 for (k = 0, j = TYPE_NFN_FIELDS (type);;)
551 { /* No match - new method name. */
552 j = TYPE_NFN_FIELDS (type)++;
553 fn_fieldlists[j].name = mname;
554 fn_fieldlists[j].length = 1;
555 fn_fieldlists[j].fn_fields = &fn_fields[i];
559 if (strcmp (mname, fn_fieldlists[j].name) == 0)
560 { /* Found an existing method with the same name. */
562 if (mname != unqualified_name)
563 obstack_free (&objfile->objfile_obstack, mname);
564 mname = fn_fieldlists[j].name;
565 fn_fieldlists[j].length++;
566 k = i - k; /* Index of new slot. */
567 /* Shift intervening fn_fields (between k and i) down. */
568 for (l = i; l > k; l--)
569 fn_fields[l] = fn_fields[l - 1];
570 for (l = TYPE_NFN_FIELDS (type); --l > j;)
571 fn_fieldlists[l].fn_fields++;
574 k += fn_fieldlists[j].length;
576 fn_fields[k].physname = "";
577 fn_fields[k].is_stub = 1;
579 fn_fields[k].type = lookup_function_type
580 (builtin_java_type (gdbarch)->builtin_void);
581 TYPE_CODE (fn_fields[k].type) = TYPE_CODE_METHOD;
584 j = TYPE_NFN_FIELDS (type) * sizeof (struct fn_fieldlist);
585 TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *)
586 obstack_alloc (&dynamics_objfile->objfile_obstack, j);
587 memcpy (TYPE_FN_FIELDLISTS (type), fn_fieldlists, j);
592 static struct type *java_object_type;
594 /* A free function that is attached to the objfile defining
595 java_object_type. This is used to clear the cached type whenever
596 its owning objfile is destroyed. */
598 jv_clear_object_type (struct objfile *objfile, void *ignore)
600 java_object_type = NULL;
604 set_java_object_type (struct type *type)
606 struct objfile *owner;
608 gdb_assert (java_object_type == NULL);
610 owner = TYPE_OBJFILE (type);
612 set_objfile_data (owner, jv_type_objfile_data_key, &java_object_type);
613 java_object_type = type;
617 get_java_object_type (void)
619 if (java_object_type == NULL)
622 sym = lookup_symbol ("java.lang.Object", NULL, STRUCT_DOMAIN, NULL);
624 error (_("cannot find java.lang.Object"));
625 set_java_object_type (SYMBOL_TYPE (sym));
627 return java_object_type;
631 get_java_object_header_size (struct gdbarch *gdbarch)
633 struct type *objtype = get_java_object_type ();
635 return (2 * gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT);
637 return TYPE_LENGTH (objtype);
641 is_object_type (struct type *type)
643 CHECK_TYPEDEF (type);
644 if (TYPE_CODE (type) == TYPE_CODE_PTR)
646 struct type *ttype = check_typedef (TYPE_TARGET_TYPE (type));
648 if (TYPE_CODE (ttype) != TYPE_CODE_STRUCT)
650 while (TYPE_N_BASECLASSES (ttype) > 0)
651 ttype = TYPE_BASECLASS (ttype, 0);
652 name = TYPE_TAG_NAME (ttype);
653 if (name != NULL && strcmp (name, "java.lang.Object") == 0)
655 name = TYPE_NFIELDS (ttype) > 0 ? TYPE_FIELD_NAME (ttype, 0) : (char *) 0;
656 if (name != NULL && strcmp (name, "vtable") == 0)
658 if (java_object_type == NULL)
659 set_java_object_type (type);
667 java_primitive_type (struct gdbarch *gdbarch, int signature)
669 const struct builtin_java_type *builtin = builtin_java_type (gdbarch);
674 return builtin->builtin_byte;
676 return builtin->builtin_short;
678 return builtin->builtin_int;
680 return builtin->builtin_long;
682 return builtin->builtin_boolean;
684 return builtin->builtin_char;
686 return builtin->builtin_float;
688 return builtin->builtin_double;
690 return builtin->builtin_void;
692 error (_("unknown signature '%c' for primitive type"), (char) signature);
695 /* If name[0 .. namelen-1] is the name of a primitive Java type,
696 return that type. Otherwise, return NULL. */
699 java_primitive_type_from_name (struct gdbarch *gdbarch,
700 char *name, int namelen)
702 const struct builtin_java_type *builtin = builtin_java_type (gdbarch);
707 if (namelen == 4 && memcmp (name, "byte", 4) == 0)
708 return builtin->builtin_byte;
709 if (namelen == 7 && memcmp (name, "boolean", 7) == 0)
710 return builtin->builtin_boolean;
713 if (namelen == 4 && memcmp (name, "char", 4) == 0)
714 return builtin->builtin_char;
716 if (namelen == 6 && memcmp (name, "double", 6) == 0)
717 return builtin->builtin_double;
720 if (namelen == 5 && memcmp (name, "float", 5) == 0)
721 return builtin->builtin_float;
724 if (namelen == 3 && memcmp (name, "int", 3) == 0)
725 return builtin->builtin_int;
728 if (namelen == 4 && memcmp (name, "long", 4) == 0)
729 return builtin->builtin_long;
732 if (namelen == 5 && memcmp (name, "short", 5) == 0)
733 return builtin->builtin_short;
736 if (namelen == 4 && memcmp (name, "void", 4) == 0)
737 return builtin->builtin_void;
744 java_primitive_type_name (int signature)
767 error (_("unknown signature '%c' for primitive type"), (char) signature);
770 /* Return the length (in bytes) of demangled name of the Java type
771 signature string SIGNATURE. */
774 java_demangled_signature_length (char *signature)
777 for (; *signature == '['; signature++)
778 array += 2; /* Two chars for "[]". */
779 switch (signature[0])
782 /* Subtract 2 for 'L' and ';'. */
783 return strlen (signature) - 2 + array;
785 return strlen (java_primitive_type_name (signature[0])) + array;
789 /* Demangle the Java type signature SIGNATURE, leaving the result in RESULT. */
792 java_demangled_signature_copy (char *result, char *signature)
797 while (*signature == '[')
802 switch (signature[0])
805 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
808 for (; *signature != ';' && *signature != '\0'; signature++)
810 if (*signature == '/')
817 ptr = java_primitive_type_name (signature[0]);
819 strcpy (result, ptr);
830 /* Return the demangled name of the Java type signature string SIGNATURE,
831 as a freshly allocated copy. */
834 java_demangle_type_signature (char *signature)
836 int length = java_demangled_signature_length (signature);
837 char *result = xmalloc (length + 1);
838 java_demangled_signature_copy (result, signature);
839 result[length] = '\0';
843 /* Return the type of TYPE followed by DIMS pairs of [ ].
844 If DIMS == 0, TYPE is returned. */
847 java_array_type (struct type *type, int dims)
851 /* FIXME This is bogus! Java arrays are not gdb arrays! */
852 type = lookup_array_range_type (type, 0, 0);
858 /* Create a Java string in the inferior from a (Utf8) literal. */
860 static struct value *
861 java_value_string (char *ptr, int len)
863 error (_("not implemented - java_value_string")); /* FIXME */
866 /* Print the character C on STREAM as part of the contents of a literal
867 string whose delimiter is QUOTER. Note that that format for printing
868 characters and strings is language specific. */
871 java_emit_char (int c, struct type *type, struct ui_file *stream, int quoter)
877 fprintf_filtered (stream, "\\%c", c);
880 fputs_filtered ("\\b", stream);
883 fputs_filtered ("\\t", stream);
886 fputs_filtered ("\\n", stream);
889 fputs_filtered ("\\f", stream);
892 fputs_filtered ("\\r", stream);
896 fputc_filtered (c, stream);
898 fprintf_filtered (stream, "\\u%.4x", (unsigned int) c);
903 static struct value *
904 evaluate_subexp_java (struct type *expect_type, struct expression *exp,
905 int *pos, enum noside noside)
910 enum exp_opcode op = exp->elts[*pos].opcode;
917 if (noside == EVAL_SKIP)
920 arg1 = evaluate_subexp_java (NULL_TYPE, exp, pos, EVAL_NORMAL);
921 if (is_object_type (value_type (arg1)))
925 type = type_from_class (exp->gdbarch, java_class_from_object (arg1));
926 arg1 = value_cast (lookup_pointer_type (type), arg1);
928 if (noside == EVAL_SKIP)
930 return value_ind (arg1);
932 case BINOP_SUBSCRIPT:
934 arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
935 arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
936 if (noside == EVAL_SKIP)
938 /* If the user attempts to subscript something that is not an
939 array or pointer type (like a plain int variable for example),
940 then report this as an error. */
942 arg1 = coerce_ref (arg1);
943 type = check_typedef (value_type (arg1));
944 if (TYPE_CODE (type) == TYPE_CODE_PTR)
945 type = check_typedef (TYPE_TARGET_TYPE (type));
946 name = TYPE_NAME (type);
948 name = TYPE_TAG_NAME (type);
949 i = name == NULL ? 0 : strlen (name);
950 if (TYPE_CODE (type) == TYPE_CODE_STRUCT
951 && i > 2 && name[i - 1] == ']')
953 enum bfd_endian byte_order = gdbarch_byte_order (exp->gdbarch);
956 struct type *el_type;
959 struct value *clas = java_class_from_object (arg1);
960 struct value *temp = clas;
961 /* Get CLASS_ELEMENT_TYPE of the array type. */
962 temp = value_struct_elt (&temp, NULL, "methods",
964 deprecated_set_value_type (temp, value_type (clas));
965 el_type = type_from_class (exp->gdbarch, temp);
966 if (TYPE_CODE (el_type) == TYPE_CODE_STRUCT)
967 el_type = lookup_pointer_type (el_type);
969 if (noside == EVAL_AVOID_SIDE_EFFECTS)
970 return value_zero (el_type, VALUE_LVAL (arg1));
971 address = value_as_address (arg1);
972 address += get_java_object_header_size (exp->gdbarch);
973 read_memory (address, buf4, 4);
974 length = (long) extract_signed_integer (buf4, 4, byte_order);
975 index = (long) value_as_long (arg2);
976 if (index >= length || index < 0)
977 error (_("array index (%ld) out of bounds (length: %ld)"),
979 address = (address + 4) + index * TYPE_LENGTH (el_type);
980 return value_at (el_type, address);
982 else if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
984 if (noside == EVAL_AVOID_SIDE_EFFECTS)
985 return value_zero (TYPE_TARGET_TYPE (type), VALUE_LVAL (arg1));
987 return value_subscript (arg1, value_as_long (arg2));
990 error (_("cannot subscript something of type `%s'"), name);
992 error (_("cannot subscript requested type"));
996 i = longest_to_int (exp->elts[pc + 1].longconst);
997 (*pos) += 3 + BYTES_TO_EXP_ELEM (i + 1);
998 if (noside == EVAL_SKIP)
1000 return java_value_string (&exp->elts[pc + 2].string, i);
1003 arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside);
1004 /* Convert object field (such as TYPE.class) to reference. */
1005 if (TYPE_CODE (value_type (arg1)) == TYPE_CODE_STRUCT)
1006 arg1 = value_addr (arg1);
1012 return evaluate_subexp_standard (expect_type, exp, pos, noside);
1014 return value_from_longest (builtin_type (exp->gdbarch)->builtin_int, 1);
1017 static char *java_demangle (const char *mangled, int options)
1019 return cplus_demangle (mangled, options | DMGL_JAVA);
1022 /* Find the member function name of the demangled name NAME. NAME
1023 must be a method name including arguments, in order to correctly
1024 locate the last component.
1026 This function return a pointer to the first dot before the
1027 member function name, or NULL if the name was not of the
1031 java_find_last_component (const char *name)
1035 /* Find argument list. */
1036 p = strchr (name, '(');
1041 /* Back up and find first dot prior to argument list. */
1042 while (p > name && *p != '.')
1051 /* Return the name of the class containing method PHYSNAME. */
1054 java_class_name_from_physname (const char *physname)
1058 char *demangled_name = java_demangle (physname, DMGL_PARAMS | DMGL_ANSI);
1060 if (demangled_name == NULL)
1063 end = java_find_last_component (demangled_name);
1066 ret = xmalloc (end - demangled_name + 1);
1067 memcpy (ret, demangled_name, end - demangled_name);
1068 ret[end - demangled_name] = '\0';
1071 xfree (demangled_name);
1075 /* Table mapping opcodes into strings for printing operators
1076 and precedences of the operators. */
1078 const struct op_print java_op_print_tab[] =
1080 {",", BINOP_COMMA, PREC_COMMA, 0},
1081 {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
1082 {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
1083 {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
1084 {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
1085 {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
1086 {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
1087 {"==", BINOP_EQUAL, PREC_EQUAL, 0},
1088 {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
1089 {"<=", BINOP_LEQ, PREC_ORDER, 0},
1090 {">=", BINOP_GEQ, PREC_ORDER, 0},
1091 {">", BINOP_GTR, PREC_ORDER, 0},
1092 {"<", BINOP_LESS, PREC_ORDER, 0},
1093 {">>", BINOP_RSH, PREC_SHIFT, 0},
1094 {"<<", BINOP_LSH, PREC_SHIFT, 0},
1096 {">>>", BINOP_ ? ? ?, PREC_SHIFT, 0},
1098 {"+", BINOP_ADD, PREC_ADD, 0},
1099 {"-", BINOP_SUB, PREC_ADD, 0},
1100 {"*", BINOP_MUL, PREC_MUL, 0},
1101 {"/", BINOP_DIV, PREC_MUL, 0},
1102 {"%", BINOP_REM, PREC_MUL, 0},
1103 {"-", UNOP_NEG, PREC_PREFIX, 0},
1104 {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
1105 {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
1106 {"*", UNOP_IND, PREC_PREFIX, 0},
1108 {"instanceof", ? ? ?, ? ? ?, 0},
1110 {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
1111 {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
1115 enum java_primitive_types
1117 java_primitive_type_int,
1118 java_primitive_type_short,
1119 java_primitive_type_long,
1120 java_primitive_type_byte,
1121 java_primitive_type_boolean,
1122 java_primitive_type_char,
1123 java_primitive_type_float,
1124 java_primitive_type_double,
1125 java_primitive_type_void,
1126 nr_java_primitive_types
1130 java_language_arch_info (struct gdbarch *gdbarch,
1131 struct language_arch_info *lai)
1133 const struct builtin_java_type *builtin = builtin_java_type (gdbarch);
1135 lai->string_char_type = builtin->builtin_char;
1136 lai->primitive_type_vector
1137 = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_java_primitive_types + 1,
1139 lai->primitive_type_vector [java_primitive_type_int]
1140 = builtin->builtin_int;
1141 lai->primitive_type_vector [java_primitive_type_short]
1142 = builtin->builtin_short;
1143 lai->primitive_type_vector [java_primitive_type_long]
1144 = builtin->builtin_long;
1145 lai->primitive_type_vector [java_primitive_type_byte]
1146 = builtin->builtin_byte;
1147 lai->primitive_type_vector [java_primitive_type_boolean]
1148 = builtin->builtin_boolean;
1149 lai->primitive_type_vector [java_primitive_type_char]
1150 = builtin->builtin_char;
1151 lai->primitive_type_vector [java_primitive_type_float]
1152 = builtin->builtin_float;
1153 lai->primitive_type_vector [java_primitive_type_double]
1154 = builtin->builtin_double;
1155 lai->primitive_type_vector [java_primitive_type_void]
1156 = builtin->builtin_void;
1158 lai->bool_type_symbol = "boolean";
1159 lai->bool_type_default = builtin->builtin_boolean;
1162 const struct exp_descriptor exp_descriptor_java =
1164 print_subexp_standard,
1165 operator_length_standard,
1166 operator_check_standard,
1168 dump_subexp_body_standard,
1169 evaluate_subexp_java
1172 const struct language_defn java_language_defn =
1174 "java", /* Language name */
1181 &exp_descriptor_java,
1185 c_printchar, /* Print a character constant */
1186 c_printstr, /* Function to print string constant */
1187 java_emit_char, /* Function to print a single character */
1188 java_print_type, /* Print a type using appropriate syntax */
1189 default_print_typedef, /* Print a typedef using appropriate syntax */
1190 java_val_print, /* Print a value using appropriate syntax */
1191 java_value_print, /* Print a top-level value */
1192 NULL, /* Language specific skip_trampoline */
1193 "this", /* name_of_this */
1194 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1195 basic_lookup_transparent_type,/* lookup_transparent_type */
1196 java_demangle, /* Language specific symbol demangler */
1197 java_class_name_from_physname,/* Language specific class name */
1198 java_op_print_tab, /* expression operators for printing */
1199 0, /* not c-style arrays */
1200 0, /* String lower bound */
1201 default_word_break_characters,
1202 default_make_symbol_completion_list,
1203 java_language_arch_info,
1204 default_print_array_index,
1205 default_pass_by_reference,
1211 build_java_types (struct gdbarch *gdbarch)
1213 struct builtin_java_type *builtin_java_type
1214 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_java_type);
1216 builtin_java_type->builtin_int
1217 = arch_integer_type (gdbarch, 32, 0, "int");
1218 builtin_java_type->builtin_short
1219 = arch_integer_type (gdbarch, 16, 0, "short");
1220 builtin_java_type->builtin_long
1221 = arch_integer_type (gdbarch, 64, 0, "long");
1222 builtin_java_type->builtin_byte
1223 = arch_integer_type (gdbarch, 8, 0, "byte");
1224 builtin_java_type->builtin_boolean
1225 = arch_boolean_type (gdbarch, 8, 0, "boolean");
1226 builtin_java_type->builtin_char
1227 = arch_character_type (gdbarch, 16, 1, "char");
1228 builtin_java_type->builtin_float
1229 = arch_float_type (gdbarch, 32, "float", NULL);
1230 builtin_java_type->builtin_double
1231 = arch_float_type (gdbarch, 64, "double", NULL);
1232 builtin_java_type->builtin_void
1233 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void");
1235 return builtin_java_type;
1238 static struct gdbarch_data *java_type_data;
1240 const struct builtin_java_type *
1241 builtin_java_type (struct gdbarch *gdbarch)
1243 return gdbarch_data (gdbarch, java_type_data);
1247 _initialize_java_language (void)
1249 jv_dynamics_objfile_data_key
1250 = register_objfile_data_with_cleanup (NULL, jv_per_objfile_free);
1251 jv_type_objfile_data_key
1252 = register_objfile_data_with_cleanup (NULL, jv_clear_object_type);
1254 java_type_data = gdbarch_data_register_post_init (build_java_types);
1256 add_language (&java_language_defn);