1 /* Java language support routines for GDB, the GNU debugger.
2 Copyright 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
4 This file is part of GDB.
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.
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.
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. */
24 #include "expression.h"
25 #include "parser-defs.h"
31 #include "gdb_string.h"
38 struct type *java_int_type;
39 struct type *java_byte_type;
40 struct type *java_short_type;
41 struct type *java_long_type;
42 struct type *java_boolean_type;
43 struct type *java_char_type;
44 struct type *java_float_type;
45 struct type *java_double_type;
46 struct type *java_void_type;
50 extern void _initialize_java_language (void);
52 static int java_demangled_signature_length (char *);
53 static void java_demangled_signature_copy (char *, char *);
55 static struct symtab *get_java_class_symtab (void);
56 static char *get_java_utf8_name (struct obstack *obstack, struct value *name);
57 static int java_class_is_primitive (struct value *clas);
58 static struct type *java_lookup_type (char *signature);
59 static struct value *java_value_string (char *ptr, int len);
61 static void java_emit_char (int c, struct ui_file * stream, int quoter);
63 /* This objfile contains symtabs that have been dynamically created
64 to record dynamically loaded Java classes and dynamically
65 compiled java methods. */
67 static struct objfile *dynamics_objfile = NULL;
69 static struct type *java_link_class_type (struct type *, struct value *);
71 static struct objfile *
72 get_dynamics_objfile (void)
74 if (dynamics_objfile == NULL)
76 dynamics_objfile = allocate_objfile (NULL, 0);
78 return dynamics_objfile;
82 /* symtab contains classes read from the inferior. */
84 static struct symtab *class_symtab = NULL;
86 /* Maximum number of class in class_symtab before relocation is needed. */
88 static int class_symtab_space;
90 static struct symtab *
91 get_java_class_symtab (void)
93 if (class_symtab == NULL)
95 struct objfile *objfile = get_dynamics_objfile ();
96 struct blockvector *bv;
98 class_symtab = allocate_symtab ("<java-classes>", objfile);
99 class_symtab->language = language_java;
100 bv = (struct blockvector *)
101 obstack_alloc (&objfile->symbol_obstack, sizeof (struct blockvector));
102 BLOCKVECTOR_NBLOCKS (bv) = 1;
103 BLOCKVECTOR (class_symtab) = bv;
105 /* Allocate dummy STATIC_BLOCK. */
106 bl = (struct block *)
107 obstack_alloc (&objfile->symbol_obstack, sizeof (struct block));
108 BLOCK_NSYMS (bl) = 0;
109 BLOCK_START (bl) = 0;
111 BLOCK_FUNCTION (bl) = NULL;
112 BLOCK_SUPERBLOCK (bl) = NULL;
113 BLOCK_GCC_COMPILED (bl) = 0;
114 BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK) = bl;
116 /* Allocate GLOBAL_BLOCK. This has to be relocatable. */
117 class_symtab_space = 128;
118 bl = xmmalloc (objfile->md,
119 sizeof (struct block)
120 + ((class_symtab_space - 1) * sizeof (struct symbol *)));
121 *bl = *BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
122 BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = bl;
123 class_symtab->free_ptr = (char *) bl;
129 add_class_symtab_symbol (struct symbol *sym)
131 struct symtab *symtab = get_java_class_symtab ();
132 struct blockvector *bv = BLOCKVECTOR (symtab);
133 struct block *bl = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
134 if (BLOCK_NSYMS (bl) >= class_symtab_space)
136 /* Need to re-allocate. */
137 class_symtab_space *= 2;
138 bl = xmrealloc (symtab->objfile->md, bl,
139 sizeof (struct block)
140 + ((class_symtab_space - 1) * sizeof (struct symbol *)));
141 class_symtab->free_ptr = (char *) bl;
142 BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = bl;
145 BLOCK_SYM (bl, BLOCK_NSYMS (bl)) = sym;
146 BLOCK_NSYMS (bl) = BLOCK_NSYMS (bl) + 1;
149 static struct symbol *add_class_symbol (struct type *type, CORE_ADDR addr);
151 static struct symbol *
152 add_class_symbol (struct type *type, CORE_ADDR addr)
155 sym = (struct symbol *)
156 obstack_alloc (&dynamics_objfile->symbol_obstack, sizeof (struct symbol));
157 memset (sym, 0, sizeof (struct symbol));
158 SYMBOL_LANGUAGE (sym) = language_java;
159 SYMBOL_NAME (sym) = TYPE_TAG_NAME (type);
160 SYMBOL_CLASS (sym) = LOC_TYPEDEF;
161 /* SYMBOL_VALUE (sym) = valu; */
162 SYMBOL_TYPE (sym) = type;
163 SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE;
164 SYMBOL_VALUE_ADDRESS (sym) = addr;
170 java_lookup_class (char *name)
173 sym = lookup_symbol (name, expression_context_block, STRUCT_NAMESPACE,
174 (int *) 0, (struct symtab **) NULL);
176 return SYMBOL_TYPE (sym);
179 if (called from parser)
181 call lookup_class (or similar) in inferior;
185 addr = found in inferior;
190 type = alloc_type (objfile);
191 TYPE_CODE (type) = TYPE_CODE_STRUCT;
192 INIT_CPLUS_SPECIFIC (type);
193 TYPE_TAG_NAME (type) = obsavestring (name, strlen (name), &objfile->type_obstack);
194 TYPE_FLAGS (type) |= TYPE_FLAG_STUB;
198 /* FIXME - should search inferior's symbol table. */
203 /* Return a nul-terminated string (allocated on OBSTACK) for
204 a name given by NAME (which has type Utf8Const*). */
207 get_java_utf8_name (struct obstack *obstack, struct value *name)
210 struct value *temp = name;
213 temp = value_struct_elt (&temp, NULL, "length", NULL, "structure");
214 name_length = (int) value_as_long (temp);
215 data_addr = VALUE_ADDRESS (temp) + VALUE_OFFSET (temp)
216 + TYPE_LENGTH (VALUE_TYPE (temp));
217 chrs = obstack_alloc (obstack, name_length + 1);
218 chrs[name_length] = '\0';
219 read_memory (data_addr, chrs, name_length);
224 java_class_from_object (struct value *obj_val)
226 /* This is all rather inefficient, since the offsets of vtable and
227 class are fixed. FIXME */
228 struct value *vtable_val;
230 if (TYPE_CODE (VALUE_TYPE (obj_val)) == TYPE_CODE_PTR
231 && TYPE_LENGTH (TYPE_TARGET_TYPE (VALUE_TYPE (obj_val))) == 0)
232 obj_val = value_at (get_java_object_type (),
233 value_as_address (obj_val), NULL);
235 vtable_val = value_struct_elt (&obj_val, NULL, "vtable", NULL, "structure");
236 return value_struct_elt (&vtable_val, NULL, "class", NULL, "structure");
239 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
241 java_class_is_primitive (struct value *clas)
243 struct value *vtable = value_struct_elt (&clas, NULL, "vtable", NULL, "struct");
244 CORE_ADDR i = value_as_address (vtable);
245 return (int) (i & 0x7fffffff) == (int) 0x7fffffff;
248 /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
251 type_from_class (struct value *clas)
256 struct objfile *objfile;
257 struct value *utf8_name;
264 type = check_typedef (VALUE_TYPE (clas));
265 if (TYPE_CODE (type) == TYPE_CODE_PTR)
267 if (value_logical_not (clas))
269 clas = value_ind (clas);
271 addr = VALUE_ADDRESS (clas) + VALUE_OFFSET (clas);
274 get_java_class_symtab ();
275 bl = BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab), GLOBAL_BLOCK);
276 for (i = BLOCK_NSYMS (bl); --i >= 0;)
278 struct symbol *sym = BLOCK_SYM (bl, i);
279 if (SYMBOL_VALUE_ADDRESS (sym) == addr)
280 return SYMBOL_TYPE (sym);
284 objfile = get_dynamics_objfile ();
285 if (java_class_is_primitive (clas))
289 sig = value_struct_elt (&temp, NULL, "method_count", NULL, "structure");
290 return java_primitive_type (value_as_long (sig));
293 /* Get Class name. */
294 /* if clasloader non-null, prepend loader address. FIXME */
296 utf8_name = value_struct_elt (&temp, NULL, "name", NULL, "structure");
297 name = get_java_utf8_name (&objfile->type_obstack, utf8_name);
298 for (nptr = name; *nptr != 0; nptr++)
304 type = java_lookup_class (name);
308 type = alloc_type (objfile);
309 TYPE_CODE (type) = TYPE_CODE_STRUCT;
310 INIT_CPLUS_SPECIFIC (type);
314 char *signature = name;
315 int namelen = java_demangled_signature_length (signature);
316 if (namelen > strlen (name))
317 name = obstack_alloc (&objfile->type_obstack, namelen + 1);
318 java_demangled_signature_copy (name, signature);
319 name[namelen] = '\0';
322 /* Set array element type. */
323 temp = value_struct_elt (&temp, NULL, "methods", NULL, "structure");
324 VALUE_TYPE (temp) = lookup_pointer_type (VALUE_TYPE (clas));
325 TYPE_TARGET_TYPE (type) = type_from_class (temp);
328 ALLOCATE_CPLUS_STRUCT_TYPE (type);
329 TYPE_TAG_NAME (type) = name;
331 add_class_symtab_symbol (add_class_symbol (type, addr));
332 return java_link_class_type (type, clas);
335 /* Fill in class TYPE with data from the CLAS value. */
338 java_link_class_type (struct type *type, struct value *clas)
341 char *unqualified_name;
342 char *name = TYPE_TAG_NAME (type);
343 int ninterfaces, nfields, nmethods;
344 int type_is_object = 0;
345 struct fn_field *fn_fields;
346 struct fn_fieldlist *fn_fieldlists;
347 struct value *fields;
348 struct value *methods;
349 struct value *method = NULL;
350 struct value *field = NULL;
352 struct objfile *objfile = get_dynamics_objfile ();
355 unqualified_name = strrchr (name, '.');
356 if (unqualified_name == NULL)
357 unqualified_name = name;
360 temp = value_struct_elt (&temp, NULL, "superclass", NULL, "structure");
361 if (name != NULL && strcmp (name, "java.lang.Object") == 0)
363 tsuper = get_java_object_type ();
364 if (tsuper && TYPE_CODE (tsuper) == TYPE_CODE_PTR)
365 tsuper = TYPE_TARGET_TYPE (tsuper);
369 tsuper = type_from_class (temp);
375 ninterfaces = value_as_long (value_struct_elt (&temp, NULL, "interface_len", NULL, "structure"));
377 TYPE_N_BASECLASSES (type) = (tsuper == NULL ? 0 : 1) + ninterfaces;
379 nfields = value_as_long (value_struct_elt (&temp, NULL, "field_count", NULL, "structure"));
380 nfields += TYPE_N_BASECLASSES (type);
381 nfields++; /* Add one for dummy "class" field. */
382 TYPE_NFIELDS (type) = nfields;
383 TYPE_FIELDS (type) = (struct field *)
384 TYPE_ALLOC (type, sizeof (struct field) * nfields);
386 memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields);
388 TYPE_FIELD_PRIVATE_BITS (type) =
389 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
390 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields);
392 TYPE_FIELD_PROTECTED_BITS (type) =
393 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
394 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields);
396 TYPE_FIELD_IGNORE_BITS (type) =
397 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
398 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields);
400 TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *)
401 TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type)));
402 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type));
406 TYPE_BASECLASS (type, 0) = tsuper;
408 SET_TYPE_FIELD_PRIVATE (type, 0);
412 if (i > 2 && name[i - 1] == ']' && tsuper != NULL)
415 TYPE_LENGTH (type) = TYPE_LENGTH (tsuper) + 4; /* size with "length" */
420 temp = value_struct_elt (&temp, NULL, "size_in_bytes", NULL, "structure");
421 TYPE_LENGTH (type) = value_as_long (temp);
425 nfields--; /* First set up dummy "class" field. */
426 SET_FIELD_PHYSADDR (TYPE_FIELD (type, nfields),
427 VALUE_ADDRESS (clas) + VALUE_OFFSET (clas));
428 TYPE_FIELD_NAME (type, nfields) = "class";
429 TYPE_FIELD_TYPE (type, nfields) = VALUE_TYPE (clas);
430 SET_TYPE_FIELD_PRIVATE (type, nfields);
432 for (i = TYPE_N_BASECLASSES (type); i < nfields; i++)
439 fields = value_struct_elt (&temp, NULL, "fields", NULL, "structure");
440 field = value_ind (fields);
443 { /* Re-use field value for next field. */
444 VALUE_ADDRESS (field) += TYPE_LENGTH (VALUE_TYPE (field));
445 VALUE_LAZY (field) = 1;
448 temp = value_struct_elt (&temp, NULL, "name", NULL, "structure");
449 TYPE_FIELD_NAME (type, i) =
450 get_java_utf8_name (&objfile->type_obstack, temp);
452 accflags = value_as_long (value_struct_elt (&temp, NULL, "accflags",
455 temp = value_struct_elt (&temp, NULL, "info", NULL, "structure");
456 boffset = value_as_long (value_struct_elt (&temp, NULL, "boffset",
458 if (accflags & 0x0001) /* public access */
462 if (accflags & 0x0002) /* private access */
464 SET_TYPE_FIELD_PRIVATE (type, i);
466 if (accflags & 0x0004) /* protected access */
468 SET_TYPE_FIELD_PROTECTED (type, i);
470 if (accflags & 0x0008) /* ACC_STATIC */
471 SET_FIELD_PHYSADDR (TYPE_FIELD (type, i), boffset);
473 TYPE_FIELD_BITPOS (type, i) = 8 * boffset;
474 if (accflags & 0x8000) /* FIELD_UNRESOLVED_FLAG */
476 TYPE_FIELD_TYPE (type, i) = get_java_object_type (); /* FIXME */
482 temp = value_struct_elt (&temp, NULL, "type", NULL, "structure");
483 ftype = type_from_class (temp);
484 if (TYPE_CODE (ftype) == TYPE_CODE_STRUCT)
485 ftype = lookup_pointer_type (ftype);
486 TYPE_FIELD_TYPE (type, i) = ftype;
491 nmethods = value_as_long (value_struct_elt (&temp, NULL, "method_count",
493 TYPE_NFN_FIELDS_TOTAL (type) = nmethods;
494 j = nmethods * sizeof (struct fn_field);
495 fn_fields = (struct fn_field *)
496 obstack_alloc (&dynamics_objfile->symbol_obstack, j);
497 memset (fn_fields, 0, j);
498 fn_fieldlists = (struct fn_fieldlist *)
499 alloca (nmethods * sizeof (struct fn_fieldlist));
502 for (i = 0; i < nmethods; i++)
509 methods = value_struct_elt (&temp, NULL, "methods", NULL, "structure");
510 method = value_ind (methods);
513 { /* Re-use method value for next method. */
514 VALUE_ADDRESS (method) += TYPE_LENGTH (VALUE_TYPE (method));
515 VALUE_LAZY (method) = 1;
518 /* Get method name. */
520 temp = value_struct_elt (&temp, NULL, "name", NULL, "structure");
521 mname = get_java_utf8_name (&objfile->type_obstack, temp);
522 if (strcmp (mname, "<init>") == 0)
523 mname = unqualified_name;
525 /* Check for an existing method with the same name.
526 * This makes building the fn_fieldslists an O(nmethods**2)
527 * operation. That could be using hashing, but I doubt it
528 * is worth it. Note that we do maintain the order of methods
529 * in the inferior's Method table (as long as that is grouped
530 * by method name), which I think is desirable. --PB */
531 for (k = 0, j = TYPE_NFN_FIELDS (type);;)
534 { /* No match - new method name. */
535 j = TYPE_NFN_FIELDS (type)++;
536 fn_fieldlists[j].name = mname;
537 fn_fieldlists[j].length = 1;
538 fn_fieldlists[j].fn_fields = &fn_fields[i];
542 if (strcmp (mname, fn_fieldlists[j].name) == 0)
543 { /* Found an existing method with the same name. */
545 if (mname != unqualified_name)
546 obstack_free (&objfile->type_obstack, mname);
547 mname = fn_fieldlists[j].name;
548 fn_fieldlists[j].length++;
549 k = i - k; /* Index of new slot. */
550 /* Shift intervening fn_fields (between k and i) down. */
551 for (l = i; l > k; l--)
552 fn_fields[l] = fn_fields[l - 1];
553 for (l = TYPE_NFN_FIELDS (type); --l > j;)
554 fn_fieldlists[l].fn_fields++;
557 k += fn_fieldlists[j].length;
559 fn_fields[k].physname = "";
560 fn_fields[k].is_stub = 1;
561 fn_fields[k].type = make_function_type (java_void_type, NULL); /* FIXME */
562 TYPE_CODE (fn_fields[k].type) = TYPE_CODE_METHOD;
565 j = TYPE_NFN_FIELDS (type) * sizeof (struct fn_fieldlist);
566 TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *)
567 obstack_alloc (&dynamics_objfile->symbol_obstack, j);
568 memcpy (TYPE_FN_FIELDLISTS (type), fn_fieldlists, j);
573 static struct type *java_object_type;
576 get_java_object_type (void)
578 if (java_object_type == NULL)
581 sym = lookup_symbol ("java.lang.Object", NULL, STRUCT_NAMESPACE,
582 (int *) 0, (struct symtab **) NULL);
584 error ("cannot find java.lang.Object");
585 java_object_type = SYMBOL_TYPE (sym);
587 return java_object_type;
591 get_java_object_header_size (void)
593 struct type *objtype = get_java_object_type ();
595 return (2 * TARGET_PTR_BIT / TARGET_CHAR_BIT);
597 return TYPE_LENGTH (objtype);
601 is_object_type (struct type *type)
603 CHECK_TYPEDEF (type);
604 if (TYPE_CODE (type) == TYPE_CODE_PTR)
606 struct type *ttype = check_typedef (TYPE_TARGET_TYPE (type));
608 if (TYPE_CODE (ttype) != TYPE_CODE_STRUCT)
610 while (TYPE_N_BASECLASSES (ttype) > 0)
611 ttype = TYPE_BASECLASS (ttype, 0);
612 name = TYPE_TAG_NAME (ttype);
613 if (name != NULL && strcmp (name, "java.lang.Object") == 0)
615 name = TYPE_NFIELDS (ttype) > 0 ? TYPE_FIELD_NAME (ttype, 0) : (char *) 0;
616 if (name != NULL && strcmp (name, "vtable") == 0)
618 if (java_object_type == NULL)
619 java_object_type = type;
627 java_primitive_type (int signature)
632 return java_byte_type;
634 return java_short_type;
636 return java_int_type;
638 return java_long_type;
640 return java_boolean_type;
642 return java_char_type;
644 return java_float_type;
646 return java_double_type;
648 return java_void_type;
650 error ("unknown signature '%c' for primitive type", (char) signature);
653 /* If name[0 .. namelen-1] is the name of a primitive Java type,
654 return that type. Otherwise, return NULL. */
657 java_primitive_type_from_name (char *name, int namelen)
662 if (namelen == 4 && memcmp (name, "byte", 4) == 0)
663 return java_byte_type;
664 if (namelen == 7 && memcmp (name, "boolean", 7) == 0)
665 return java_boolean_type;
668 if (namelen == 4 && memcmp (name, "char", 4) == 0)
669 return java_char_type;
671 if (namelen == 6 && memcmp (name, "double", 6) == 0)
672 return java_double_type;
675 if (namelen == 5 && memcmp (name, "float", 5) == 0)
676 return java_float_type;
679 if (namelen == 3 && memcmp (name, "int", 3) == 0)
680 return java_int_type;
683 if (namelen == 4 && memcmp (name, "long", 4) == 0)
684 return java_long_type;
687 if (namelen == 5 && memcmp (name, "short", 5) == 0)
688 return java_short_type;
691 if (namelen == 4 && memcmp (name, "void", 4) == 0)
692 return java_void_type;
698 /* Return the length (in bytes) of demangled name of the Java type
699 signature string SIGNATURE. */
702 java_demangled_signature_length (char *signature)
705 for (; *signature == '['; signature++)
706 array += 2; /* Two chars for "[]". */
707 switch (signature[0])
710 /* Subtract 2 for 'L' and ';'. */
711 return strlen (signature) - 2 + array;
713 return strlen (TYPE_NAME (java_primitive_type (signature[0]))) + array;
717 /* Demangle the Java type signature SIGNATURE, leaving the result in RESULT. */
720 java_demangled_signature_copy (char *result, char *signature)
725 while (*signature == '[')
730 switch (signature[0])
733 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
736 for (; *signature != ';' && *signature != '\0'; signature++)
738 if (*signature == '/')
745 ptr = TYPE_NAME (java_primitive_type (signature[0]));
747 strcpy (result, ptr);
758 /* Return the demangled name of the Java type signature string SIGNATURE,
759 as a freshly allocated copy. */
762 java_demangle_type_signature (char *signature)
764 int length = java_demangled_signature_length (signature);
765 char *result = xmalloc (length + 1);
766 java_demangled_signature_copy (result, signature);
767 result[length] = '\0';
772 java_lookup_type (char *signature)
774 switch (signature[0])
778 error ("java_lookup_type not fully implemented");
780 return java_primitive_type (signature[0]);
784 /* Return the type of TYPE followed by DIMS pairs of [ ].
785 If DIMS == 0, TYPE is returned. */
788 java_array_type (struct type *type, int dims)
790 struct type *range_type;
794 range_type = create_range_type (NULL, builtin_type_int, 0, 0);
795 /* FIXME This is bogus! Java arrays are not gdb arrays! */
796 type = create_array_type (NULL, type, range_type);
802 /* Create a Java string in the inferior from a (Utf8) literal. */
804 static struct value *
805 java_value_string (char *ptr, int len)
807 error ("not implemented - java_value_string"); /* FIXME */
810 /* Print the character C on STREAM as part of the contents of a literal
811 string whose delimiter is QUOTER. Note that that format for printing
812 characters and strings is language specific. */
815 java_emit_char (int c, struct ui_file *stream, int quoter)
821 fprintf_filtered (stream, "\\%c", c);
824 fputs_filtered ("\\b", stream);
827 fputs_filtered ("\\t", stream);
830 fputs_filtered ("\\n", stream);
833 fputs_filtered ("\\f", stream);
836 fputs_filtered ("\\r", stream);
840 fputc_filtered (c, stream);
842 fprintf_filtered (stream, "\\u%.4x", (unsigned int) c);
847 static struct value *
848 evaluate_subexp_java (struct type *expect_type, register struct expression *exp,
849 register int *pos, enum noside noside)
854 enum exp_opcode op = exp->elts[*pos].opcode;
861 if (noside == EVAL_SKIP)
864 arg1 = evaluate_subexp_java (NULL_TYPE, exp, pos, EVAL_NORMAL);
865 if (is_object_type (VALUE_TYPE (arg1)))
869 type = type_from_class (java_class_from_object (arg1));
870 arg1 = value_cast (lookup_pointer_type (type), arg1);
872 if (noside == EVAL_SKIP)
874 return value_ind (arg1);
876 case BINOP_SUBSCRIPT:
878 arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
879 arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
880 if (noside == EVAL_SKIP)
882 /* If the user attempts to subscript something that is not an
883 array or pointer type (like a plain int variable for example),
884 then report this as an error. */
887 type = check_typedef (VALUE_TYPE (arg1));
888 if (TYPE_CODE (type) == TYPE_CODE_PTR)
889 type = check_typedef (TYPE_TARGET_TYPE (type));
890 name = TYPE_NAME (type);
892 name = TYPE_TAG_NAME (type);
893 i = name == NULL ? 0 : strlen (name);
894 if (TYPE_CODE (type) == TYPE_CODE_STRUCT
895 && i > 2 && name[i - 1] == ']')
899 struct type *el_type;
902 struct value *clas = java_class_from_object (arg1);
903 struct value *temp = clas;
904 /* Get CLASS_ELEMENT_TYPE of the array type. */
905 temp = value_struct_elt (&temp, NULL, "methods",
907 VALUE_TYPE (temp) = VALUE_TYPE (clas);
908 el_type = type_from_class (temp);
909 if (TYPE_CODE (el_type) == TYPE_CODE_STRUCT)
910 el_type = lookup_pointer_type (el_type);
912 if (noside == EVAL_AVOID_SIDE_EFFECTS)
913 return value_zero (el_type, VALUE_LVAL (arg1));
914 address = value_as_address (arg1);
915 address += JAVA_OBJECT_SIZE;
916 read_memory (address, buf4, 4);
917 length = (long) extract_signed_integer (buf4, 4);
918 index = (long) value_as_long (arg2);
919 if (index >= length || index < 0)
920 error ("array index (%ld) out of bounds (length: %ld)",
922 address = (address + 4) + index * TYPE_LENGTH (el_type);
923 return value_at (el_type, address, NULL);
925 else if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
927 if (noside == EVAL_AVOID_SIDE_EFFECTS)
928 return value_zero (TYPE_TARGET_TYPE (type), VALUE_LVAL (arg1));
930 return value_subscript (arg1, arg2);
933 error ("cannot subscript something of type `%s'", name);
935 error ("cannot subscript requested type");
939 i = longest_to_int (exp->elts[pc + 1].longconst);
940 (*pos) += 3 + BYTES_TO_EXP_ELEM (i + 1);
941 if (noside == EVAL_SKIP)
943 return java_value_string (&exp->elts[pc + 2].string, i);
945 case STRUCTOP_STRUCT:
946 arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside);
947 /* Convert object field (such as TYPE.class) to reference. */
948 if (TYPE_CODE (VALUE_TYPE (arg1)) == TYPE_CODE_STRUCT)
949 arg1 = value_addr (arg1);
955 return evaluate_subexp_standard (expect_type, exp, pos, noside);
957 return value_from_longest (builtin_type_long, (LONGEST) 1);
961 java_create_fundamental_type (struct objfile *objfile, int typeid)
966 return java_void_type;
968 return java_boolean_type;
970 return java_char_type;
972 return java_float_type;
973 case FT_DBL_PREC_FLOAT:
974 return java_double_type;
977 return java_byte_type;
979 case FT_SIGNED_SHORT:
980 return java_short_type;
982 case FT_SIGNED_INTEGER:
983 return java_int_type;
986 return java_long_type;
988 return c_create_fundamental_type (objfile, typeid);
991 /* Table mapping opcodes into strings for printing operators
992 and precedences of the operators. */
994 const struct op_print java_op_print_tab[] =
996 {",", BINOP_COMMA, PREC_COMMA, 0},
997 {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
998 {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
999 {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
1000 {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
1001 {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
1002 {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
1003 {"==", BINOP_EQUAL, PREC_EQUAL, 0},
1004 {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
1005 {"<=", BINOP_LEQ, PREC_ORDER, 0},
1006 {">=", BINOP_GEQ, PREC_ORDER, 0},
1007 {">", BINOP_GTR, PREC_ORDER, 0},
1008 {"<", BINOP_LESS, PREC_ORDER, 0},
1009 {">>", BINOP_RSH, PREC_SHIFT, 0},
1010 {"<<", BINOP_LSH, PREC_SHIFT, 0},
1012 {">>>", BINOP_ ? ? ?, PREC_SHIFT, 0},
1014 {"+", BINOP_ADD, PREC_ADD, 0},
1015 {"-", BINOP_SUB, PREC_ADD, 0},
1016 {"*", BINOP_MUL, PREC_MUL, 0},
1017 {"/", BINOP_DIV, PREC_MUL, 0},
1018 {"%", BINOP_REM, PREC_MUL, 0},
1019 {"-", UNOP_NEG, PREC_PREFIX, 0},
1020 {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
1021 {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
1022 {"*", UNOP_IND, PREC_PREFIX, 0},
1024 {"instanceof", ? ? ?, ? ? ?, 0},
1026 {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
1027 {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
1031 const struct language_defn java_language_defn =
1033 "java", /* Language name */
1041 evaluate_subexp_java,
1042 c_printchar, /* Print a character constant */
1043 c_printstr, /* Function to print string constant */
1044 java_emit_char, /* Function to print a single character */
1045 java_create_fundamental_type, /* Create fundamental type in this language */
1046 java_print_type, /* Print a type using appropriate syntax */
1047 java_val_print, /* Print a value using appropriate syntax */
1048 java_value_print, /* Print a top-level value */
1049 {"", "", "", ""}, /* Binary format info */
1050 {"0%lo", "0", "o", ""}, /* Octal format info */
1051 {"%ld", "", "d", ""}, /* Decimal format info */
1052 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1053 java_op_print_tab, /* expression operators for printing */
1054 0, /* not c-style arrays */
1055 0, /* String lower bound */
1056 &builtin_type_char, /* Type of string elements */
1061 _initialize_java_language (void)
1064 java_int_type = init_type (TYPE_CODE_INT, 4, 0, "int", NULL);
1065 java_short_type = init_type (TYPE_CODE_INT, 2, 0, "short", NULL);
1066 java_long_type = init_type (TYPE_CODE_INT, 8, 0, "long", NULL);
1067 java_byte_type = init_type (TYPE_CODE_INT, 1, 0, "byte", NULL);
1068 java_boolean_type = init_type (TYPE_CODE_BOOL, 1, 0, "boolean", NULL);
1069 java_char_type = init_type (TYPE_CODE_CHAR, 2, TYPE_FLAG_UNSIGNED, "char", NULL);
1070 java_float_type = init_type (TYPE_CODE_FLT, 4, 0, "float", NULL);
1071 java_double_type = init_type (TYPE_CODE_FLT, 8, 0, "double", NULL);
1072 java_void_type = init_type (TYPE_CODE_VOID, 1, 0, "void", NULL);
1074 add_language (&java_language_defn);
1077 /* Cleanup code that should be run on every "run".
1078 We should use make_run_cleanup to have this be called.
1079 But will that mess up values in value histry? FIXME */
1081 extern void java_rerun_cleanup (void);
1083 java_rerun_cleanup (void)
1085 if (class_symtab != NULL)
1087 free_symtab (class_symtab); /* ??? */
1088 class_symtab = NULL;
1090 if (dynamics_objfile != NULL)
1092 free_objfile (dynamics_objfile);
1093 dynamics_objfile = NULL;
1096 java_object_type = NULL;