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, value_ptr name);
57 static int java_class_is_primitive (value_ptr clas);
58 static struct type *java_lookup_type (char *signature);
59 static value_ptr 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 *, value_ptr);
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 = (struct block *)
119 mmalloc (objfile->md,
120 sizeof (struct block)
121 + ((class_symtab_space - 1) * sizeof (struct symbol *)));
122 *bl = *BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
123 BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = bl;
124 class_symtab->free_ptr = (char *) bl;
130 add_class_symtab_symbol (struct symbol *sym)
132 struct symtab *symtab = get_java_class_symtab ();
133 struct blockvector *bv = BLOCKVECTOR (symtab);
134 struct block *bl = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
135 if (BLOCK_NSYMS (bl) >= class_symtab_space)
137 /* Need to re-allocate. */
138 class_symtab_space *= 2;
139 bl = (struct block *)
140 mrealloc (symtab->objfile->md, bl,
141 sizeof (struct block)
142 + ((class_symtab_space - 1) * sizeof (struct symbol *)));
143 class_symtab->free_ptr = (char *) bl;
144 BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = bl;
147 BLOCK_SYM (bl, BLOCK_NSYMS (bl)) = sym;
148 BLOCK_NSYMS (bl) = BLOCK_NSYMS (bl) + 1;
151 static struct symbol *add_class_symbol (struct type *type, CORE_ADDR addr);
153 static struct symbol *
154 add_class_symbol (struct type *type, CORE_ADDR addr)
157 sym = (struct symbol *)
158 obstack_alloc (&dynamics_objfile->symbol_obstack, sizeof (struct symbol));
159 memset (sym, 0, sizeof (struct symbol));
160 SYMBOL_LANGUAGE (sym) = language_java;
161 SYMBOL_NAME (sym) = TYPE_TAG_NAME (type);
162 SYMBOL_CLASS (sym) = LOC_TYPEDEF;
163 /* SYMBOL_VALUE (sym) = valu; */
164 SYMBOL_TYPE (sym) = type;
165 SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE;
166 SYMBOL_VALUE_ADDRESS (sym) = addr;
172 java_lookup_class (char *name)
175 sym = lookup_symbol (name, expression_context_block, STRUCT_NAMESPACE,
176 (int *) 0, (struct symtab **) NULL);
178 return SYMBOL_TYPE (sym);
181 if (called from parser)
183 call lookup_class (or similar) in inferior;
187 addr = found in inferior;
192 type = alloc_type (objfile);
193 TYPE_CODE (type) = TYPE_CODE_STRUCT;
194 INIT_CPLUS_SPECIFIC (type);
195 TYPE_TAG_NAME (type) = obsavestring (name, strlen (name), &objfile->type_obstack);
196 TYPE_FLAGS (type) |= TYPE_FLAG_STUB;
200 /* FIXME - should search inferior's symbol table. */
205 /* Return a nul-terminated string (allocated on OBSTACK) for
206 a name given by NAME (which has type Utf8Const*). */
209 get_java_utf8_name (struct obstack *obstack, value_ptr name)
212 value_ptr temp = name;
215 temp = value_struct_elt (&temp, NULL, "length", NULL, "structure");
216 name_length = (int) value_as_long (temp);
217 data_addr = VALUE_ADDRESS (temp) + VALUE_OFFSET (temp)
218 + TYPE_LENGTH (VALUE_TYPE (temp));
219 chrs = obstack_alloc (obstack, name_length + 1);
220 chrs[name_length] = '\0';
221 read_memory (data_addr, chrs, name_length);
226 java_class_from_object (value_ptr obj_val)
228 /* This is all rather inefficient, since the offsets of vtable and
229 class are fixed. FIXME */
230 value_ptr vtable_val;
232 if (TYPE_CODE (VALUE_TYPE (obj_val)) == TYPE_CODE_PTR
233 && TYPE_LENGTH (TYPE_TARGET_TYPE (VALUE_TYPE (obj_val))) == 0)
234 obj_val = value_at (get_java_object_type (),
235 value_as_pointer (obj_val), NULL);
237 vtable_val = value_struct_elt (&obj_val, NULL, "vtable", NULL, "structure");
238 return value_struct_elt (&vtable_val, NULL, "class", NULL, "structure");
241 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
243 java_class_is_primitive (value_ptr clas)
245 value_ptr vtable = value_struct_elt (&clas, NULL, "vtable", NULL, "struct");
246 CORE_ADDR i = value_as_pointer (vtable);
247 return (int) (i & 0x7fffffff) == (int) 0x7fffffff;
250 /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
253 type_from_class (value_ptr clas)
258 struct objfile *objfile;
266 type = check_typedef (VALUE_TYPE (clas));
267 if (TYPE_CODE (type) == TYPE_CODE_PTR)
269 if (value_logical_not (clas))
271 clas = value_ind (clas);
273 addr = VALUE_ADDRESS (clas) + VALUE_OFFSET (clas);
276 get_java_class_symtab ();
277 bl = BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab), GLOBAL_BLOCK);
278 for (i = BLOCK_NSYMS (bl); --i >= 0;)
280 struct symbol *sym = BLOCK_SYM (bl, i);
281 if (SYMBOL_VALUE_ADDRESS (sym) == addr)
282 return SYMBOL_TYPE (sym);
286 objfile = get_dynamics_objfile ();
287 if (java_class_is_primitive (clas))
291 sig = value_struct_elt (&temp, NULL, "method_count", NULL, "structure");
292 return java_primitive_type (value_as_long (sig));
295 /* Get Class name. */
296 /* if clasloader non-null, prepend loader address. FIXME */
298 utf8_name = value_struct_elt (&temp, NULL, "name", NULL, "structure");
299 name = get_java_utf8_name (&objfile->type_obstack, utf8_name);
300 for (nptr = name; *nptr != 0; nptr++)
306 type = java_lookup_class (name);
310 type = alloc_type (objfile);
311 TYPE_CODE (type) = TYPE_CODE_STRUCT;
312 INIT_CPLUS_SPECIFIC (type);
316 char *signature = name;
317 int namelen = java_demangled_signature_length (signature);
318 if (namelen > strlen (name))
319 name = obstack_alloc (&objfile->type_obstack, namelen + 1);
320 java_demangled_signature_copy (name, signature);
321 name[namelen] = '\0';
324 /* Set array element type. */
325 temp = value_struct_elt (&temp, NULL, "methods", NULL, "structure");
326 VALUE_TYPE (temp) = lookup_pointer_type (VALUE_TYPE (clas));
327 TYPE_TARGET_TYPE (type) = type_from_class (temp);
330 ALLOCATE_CPLUS_STRUCT_TYPE (type);
331 TYPE_TAG_NAME (type) = name;
333 add_class_symtab_symbol (add_class_symbol (type, addr));
334 return java_link_class_type (type, clas);
337 /* Fill in class TYPE with data from the CLAS value. */
340 java_link_class_type (struct type *type, value_ptr clas)
343 char *unqualified_name;
344 char *name = TYPE_TAG_NAME (type);
345 int ninterfaces, nfields, nmethods;
346 int type_is_object = 0;
347 struct fn_field *fn_fields;
348 struct fn_fieldlist *fn_fieldlists;
349 value_ptr fields, field, method, methods;
351 struct objfile *objfile = get_dynamics_objfile ();
354 unqualified_name = strrchr (name, '.');
355 if (unqualified_name == NULL)
356 unqualified_name = name;
359 temp = value_struct_elt (&temp, NULL, "superclass", NULL, "structure");
360 if (name != NULL && strcmp (name, "java.lang.Object") == 0)
362 tsuper = get_java_object_type ();
363 if (tsuper && TYPE_CODE (tsuper) == TYPE_CODE_PTR)
364 tsuper = TYPE_TARGET_TYPE (tsuper);
368 tsuper = type_from_class (temp);
374 ninterfaces = value_as_long (value_struct_elt (&temp, NULL, "interface_len", NULL, "structure"));
376 TYPE_N_BASECLASSES (type) = (tsuper == NULL ? 0 : 1) + ninterfaces;
378 nfields = value_as_long (value_struct_elt (&temp, NULL, "field_count", NULL, "structure"));
379 nfields += TYPE_N_BASECLASSES (type);
380 nfields++; /* Add one for dummy "class" field. */
381 TYPE_NFIELDS (type) = nfields;
382 TYPE_FIELDS (type) = (struct field *)
383 TYPE_ALLOC (type, sizeof (struct field) * nfields);
385 memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields);
387 TYPE_FIELD_PRIVATE_BITS (type) =
388 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
389 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields);
391 TYPE_FIELD_PROTECTED_BITS (type) =
392 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
393 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields);
395 TYPE_FIELD_IGNORE_BITS (type) =
396 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
397 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields);
399 TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *)
400 TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type)));
401 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type));
405 TYPE_BASECLASS (type, 0) = tsuper;
407 SET_TYPE_FIELD_PRIVATE (type, 0);
411 if (i > 2 && name[i - 1] == ']' && tsuper != NULL)
414 TYPE_LENGTH (type) = TYPE_LENGTH (tsuper) + 4; /* size with "length" */
419 temp = value_struct_elt (&temp, NULL, "size_in_bytes", NULL, "structure");
420 TYPE_LENGTH (type) = value_as_long (temp);
424 nfields--; /* First set up dummy "class" field. */
425 SET_FIELD_PHYSADDR (TYPE_FIELD (type, nfields),
426 VALUE_ADDRESS (clas) + VALUE_OFFSET (clas));
427 TYPE_FIELD_NAME (type, nfields) = "class";
428 TYPE_FIELD_TYPE (type, nfields) = VALUE_TYPE (clas);
429 SET_TYPE_FIELD_PRIVATE (type, nfields);
431 for (i = TYPE_N_BASECLASSES (type); i < nfields; i++)
438 fields = value_struct_elt (&temp, NULL, "fields", NULL, "structure");
439 field = value_ind (fields);
442 { /* Re-use field value for next field. */
443 VALUE_ADDRESS (field) += TYPE_LENGTH (VALUE_TYPE (field));
444 VALUE_LAZY (field) = 1;
447 temp = value_struct_elt (&temp, NULL, "name", NULL, "structure");
448 TYPE_FIELD_NAME (type, i) =
449 get_java_utf8_name (&objfile->type_obstack, temp);
451 accflags = value_as_long (value_struct_elt (&temp, NULL, "accflags",
454 temp = value_struct_elt (&temp, NULL, "info", NULL, "structure");
455 boffset = value_as_long (value_struct_elt (&temp, NULL, "boffset",
457 if (accflags & 0x0001) /* public access */
461 if (accflags & 0x0002) /* private access */
463 SET_TYPE_FIELD_PRIVATE (type, i);
465 if (accflags & 0x0004) /* protected access */
467 SET_TYPE_FIELD_PROTECTED (type, i);
469 if (accflags & 0x0008) /* ACC_STATIC */
470 SET_FIELD_PHYSADDR (TYPE_FIELD (type, i), boffset);
472 TYPE_FIELD_BITPOS (type, i) = 8 * boffset;
473 if (accflags & 0x8000) /* FIELD_UNRESOLVED_FLAG */
475 TYPE_FIELD_TYPE (type, i) = get_java_object_type (); /* FIXME */
481 temp = value_struct_elt (&temp, NULL, "type", NULL, "structure");
482 ftype = type_from_class (temp);
483 if (TYPE_CODE (ftype) == TYPE_CODE_STRUCT)
484 ftype = lookup_pointer_type (ftype);
485 TYPE_FIELD_TYPE (type, i) = ftype;
490 nmethods = value_as_long (value_struct_elt (&temp, NULL, "method_count",
492 TYPE_NFN_FIELDS_TOTAL (type) = nmethods;
493 j = nmethods * sizeof (struct fn_field);
494 fn_fields = (struct fn_field *)
495 obstack_alloc (&dynamics_objfile->symbol_obstack, j);
496 memset (fn_fields, 0, j);
497 fn_fieldlists = (struct fn_fieldlist *)
498 alloca (nmethods * sizeof (struct fn_fieldlist));
501 for (i = 0; i < nmethods; i++)
508 methods = value_struct_elt (&temp, NULL, "methods", NULL, "structure");
509 method = value_ind (methods);
512 { /* Re-use method value for next method. */
513 VALUE_ADDRESS (method) += TYPE_LENGTH (VALUE_TYPE (method));
514 VALUE_LAZY (method) = 1;
517 /* Get method name. */
519 temp = value_struct_elt (&temp, NULL, "name", NULL, "structure");
520 mname = get_java_utf8_name (&objfile->type_obstack, temp);
521 if (strcmp (mname, "<init>") == 0)
522 mname = unqualified_name;
524 /* Check for an existing method with the same name.
525 * This makes building the fn_fieldslists an O(nmethods**2)
526 * operation. That could be using hashing, but I doubt it
527 * is worth it. Note that we do maintain the order of methods
528 * in the inferior's Method table (as long as that is grouped
529 * by method name), which I think is desirable. --PB */
530 for (k = 0, j = TYPE_NFN_FIELDS (type);;)
533 { /* No match - new method name. */
534 j = TYPE_NFN_FIELDS (type)++;
535 fn_fieldlists[j].name = mname;
536 fn_fieldlists[j].length = 1;
537 fn_fieldlists[j].fn_fields = &fn_fields[i];
541 if (strcmp (mname, fn_fieldlists[j].name) == 0)
542 { /* Found an existing method with the same name. */
544 if (mname != unqualified_name)
545 obstack_free (&objfile->type_obstack, mname);
546 mname = fn_fieldlists[j].name;
547 fn_fieldlists[j].length++;
548 k = i - k; /* Index of new slot. */
549 /* Shift intervening fn_fields (between k and i) down. */
550 for (l = i; l > k; l--)
551 fn_fields[l] = fn_fields[l - 1];
552 for (l = TYPE_NFN_FIELDS (type); --l > j;)
553 fn_fieldlists[l].fn_fields++;
556 k += fn_fieldlists[j].length;
558 fn_fields[k].physname = "";
559 fn_fields[k].is_stub = 1;
560 fn_fields[k].type = make_function_type (java_void_type, NULL); /* FIXME */
561 TYPE_CODE (fn_fields[k].type) = TYPE_CODE_METHOD;
564 j = TYPE_NFN_FIELDS (type) * sizeof (struct fn_fieldlist);
565 TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *)
566 obstack_alloc (&dynamics_objfile->symbol_obstack, j);
567 memcpy (TYPE_FN_FIELDLISTS (type), fn_fieldlists, j);
572 static struct type *java_object_type;
575 get_java_object_type (void)
577 if (java_object_type == NULL)
580 sym = lookup_symbol ("java.lang.Object", NULL, STRUCT_NAMESPACE,
581 (int *) 0, (struct symtab **) NULL);
583 error ("cannot find java.lang.Object");
584 java_object_type = SYMBOL_TYPE (sym);
586 return java_object_type;
590 get_java_object_header_size (void)
592 struct type *objtype = get_java_object_type ();
594 return (2 * TARGET_PTR_BIT / TARGET_CHAR_BIT);
596 return TYPE_LENGTH (objtype);
600 is_object_type (struct type *type)
602 CHECK_TYPEDEF (type);
603 if (TYPE_CODE (type) == TYPE_CODE_PTR)
605 struct type *ttype = check_typedef (TYPE_TARGET_TYPE (type));
607 if (TYPE_CODE (ttype) != TYPE_CODE_STRUCT)
609 while (TYPE_N_BASECLASSES (ttype) > 0)
610 ttype = TYPE_BASECLASS (ttype, 0);
611 name = TYPE_TAG_NAME (ttype);
612 if (name != NULL && strcmp (name, "java.lang.Object") == 0)
614 name = TYPE_NFIELDS (ttype) > 0 ? TYPE_FIELD_NAME (ttype, 0) : (char *) 0;
615 if (name != NULL && strcmp (name, "vtable") == 0)
617 if (java_object_type == NULL)
618 java_object_type = type;
626 java_primitive_type (int signature)
631 return java_byte_type;
633 return java_short_type;
635 return java_int_type;
637 return java_long_type;
639 return java_boolean_type;
641 return java_char_type;
643 return java_float_type;
645 return java_double_type;
647 return java_void_type;
649 error ("unknown signature '%c' for primitive type", (char) signature);
652 /* If name[0 .. namelen-1] is the name of a primitive Java type,
653 return that type. Otherwise, return NULL. */
656 java_primitive_type_from_name (char *name, int namelen)
661 if (namelen == 4 && memcmp (name, "byte", 4) == 0)
662 return java_byte_type;
663 if (namelen == 7 && memcmp (name, "boolean", 7) == 0)
664 return java_boolean_type;
667 if (namelen == 4 && memcmp (name, "char", 4) == 0)
668 return java_char_type;
670 if (namelen == 6 && memcmp (name, "double", 6) == 0)
671 return java_double_type;
674 if (namelen == 5 && memcmp (name, "float", 5) == 0)
675 return java_float_type;
678 if (namelen == 3 && memcmp (name, "int", 3) == 0)
679 return java_int_type;
682 if (namelen == 4 && memcmp (name, "long", 4) == 0)
683 return java_long_type;
686 if (namelen == 5 && memcmp (name, "short", 5) == 0)
687 return java_short_type;
690 if (namelen == 4 && memcmp (name, "void", 4) == 0)
691 return java_void_type;
697 /* Return the length (in bytes) of demangled name of the Java type
698 signature string SIGNATURE. */
701 java_demangled_signature_length (char *signature)
704 for (; *signature == '['; signature++)
705 array += 2; /* Two chars for "[]". */
706 switch (signature[0])
709 /* Subtract 2 for 'L' and ';'. */
710 return strlen (signature) - 2 + array;
712 return strlen (TYPE_NAME (java_primitive_type (signature[0]))) + array;
716 /* Demangle the Java type signature SIGNATURE, leaving the result in RESULT. */
719 java_demangled_signature_copy (char *result, char *signature)
724 while (*signature == '[')
729 switch (signature[0])
732 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
735 for (; *signature != ';' && *signature != '\0'; signature++)
737 if (*signature == '/')
744 ptr = TYPE_NAME (java_primitive_type (signature[0]));
746 strcpy (result, ptr);
757 /* Return the demangled name of the Java type signature string SIGNATURE,
758 as a freshly allocated copy. */
761 java_demangle_type_signature (char *signature)
763 int length = java_demangled_signature_length (signature);
764 char *result = xmalloc (length + 1);
765 java_demangled_signature_copy (result, signature);
766 result[length] = '\0';
771 java_lookup_type (char *signature)
773 switch (signature[0])
777 error ("java_lookup_type not fully implemented");
779 return java_primitive_type (signature[0]);
783 /* Return the type of TYPE followed by DIMS pairs of [ ].
784 If DIMS == 0, TYPE is returned. */
787 java_array_type (struct type *type, int dims)
789 struct type *range_type;
793 range_type = create_range_type (NULL, builtin_type_int, 0, 0);
794 /* FIXME This is bogus! Java arrays are not gdb arrays! */
795 type = create_array_type (NULL, type, range_type);
801 /* Create a Java string in the inferior from a (Utf8) literal. */
804 java_value_string (char *ptr, int len)
806 error ("not implemented - java_value_string"); /* FIXME */
809 /* Print the character C on STREAM as part of the contents of a literal
810 string whose delimiter is QUOTER. Note that that format for printing
811 characters and strings is language specific. */
814 java_emit_char (int c, struct ui_file *stream, int quoter)
820 fprintf_filtered (stream, "\\%c", c);
823 fputs_filtered ("\\b", stream);
826 fputs_filtered ("\\t", stream);
829 fputs_filtered ("\\n", stream);
832 fputs_filtered ("\\f", stream);
835 fputs_filtered ("\\r", stream);
839 fputc_filtered (c, stream);
841 fprintf_filtered (stream, "\\u%.4x", (unsigned int) c);
847 evaluate_subexp_java (struct type *expect_type, register struct expression *exp,
848 register int *pos, enum noside noside)
853 enum exp_opcode op = exp->elts[*pos].opcode;
854 value_ptr arg1, arg2;
859 if (noside == EVAL_SKIP)
862 arg1 = evaluate_subexp_java (NULL_TYPE, exp, pos, EVAL_NORMAL);
863 if (is_object_type (VALUE_TYPE (arg1)))
867 type = type_from_class (java_class_from_object (arg1));
868 arg1 = value_cast (lookup_pointer_type (type), arg1);
870 if (noside == EVAL_SKIP)
872 return value_ind (arg1);
874 case BINOP_SUBSCRIPT:
876 arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
877 arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
878 if (noside == EVAL_SKIP)
880 /* If the user attempts to subscript something that is not an
881 array or pointer type (like a plain int variable for example),
882 then report this as an error. */
885 type = check_typedef (VALUE_TYPE (arg1));
886 if (TYPE_CODE (type) == TYPE_CODE_PTR)
887 type = check_typedef (TYPE_TARGET_TYPE (type));
888 name = TYPE_NAME (type);
890 name = TYPE_TAG_NAME (type);
891 i = name == NULL ? 0 : strlen (name);
892 if (TYPE_CODE (type) == TYPE_CODE_STRUCT
893 && i > 2 && name[i - 1] == ']')
897 struct type *el_type;
900 value_ptr clas = java_class_from_object (arg1);
901 value_ptr temp = clas;
902 /* Get CLASS_ELEMENT_TYPE of the array type. */
903 temp = value_struct_elt (&temp, NULL, "methods",
905 VALUE_TYPE (temp) = VALUE_TYPE (clas);
906 el_type = type_from_class (temp);
907 if (TYPE_CODE (el_type) == TYPE_CODE_STRUCT)
908 el_type = lookup_pointer_type (el_type);
910 if (noside == EVAL_AVOID_SIDE_EFFECTS)
911 return value_zero (el_type, VALUE_LVAL (arg1));
912 address = value_as_pointer (arg1);
913 address += JAVA_OBJECT_SIZE;
914 read_memory (address, buf4, 4);
915 length = (long) extract_signed_integer (buf4, 4);
916 index = (long) value_as_long (arg2);
917 if (index >= length || index < 0)
918 error ("array index (%ld) out of bounds (length: %ld)",
920 address = (address + 4) + index * TYPE_LENGTH (el_type);
921 return value_at (el_type, address, NULL);
923 else if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
925 if (noside == EVAL_AVOID_SIDE_EFFECTS)
926 return value_zero (TYPE_TARGET_TYPE (type), VALUE_LVAL (arg1));
928 return value_subscript (arg1, arg2);
931 error ("cannot subscript something of type `%s'", name);
933 error ("cannot subscript requested type");
937 i = longest_to_int (exp->elts[pc + 1].longconst);
938 (*pos) += 3 + BYTES_TO_EXP_ELEM (i + 1);
939 if (noside == EVAL_SKIP)
941 return java_value_string (&exp->elts[pc + 2].string, i);
943 case STRUCTOP_STRUCT:
944 arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside);
945 /* Convert object field (such as TYPE.class) to reference. */
946 if (TYPE_CODE (VALUE_TYPE (arg1)) == TYPE_CODE_STRUCT)
947 arg1 = value_addr (arg1);
953 return evaluate_subexp_standard (expect_type, exp, pos, noside);
955 return value_from_longest (builtin_type_long, (LONGEST) 1);
959 java_create_fundamental_type (struct objfile *objfile, int typeid)
964 return java_void_type;
966 return java_boolean_type;
968 return java_char_type;
970 return java_float_type;
971 case FT_DBL_PREC_FLOAT:
972 return java_double_type;
975 return java_byte_type;
977 case FT_SIGNED_SHORT:
978 return java_short_type;
980 case FT_SIGNED_INTEGER:
981 return java_int_type;
984 return java_long_type;
986 return c_create_fundamental_type (objfile, typeid);
989 /* Table mapping opcodes into strings for printing operators
990 and precedences of the operators. */
992 const struct op_print java_op_print_tab[] =
994 {",", BINOP_COMMA, PREC_COMMA, 0},
995 {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
996 {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
997 {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
998 {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
999 {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
1000 {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
1001 {"==", BINOP_EQUAL, PREC_EQUAL, 0},
1002 {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
1003 {"<=", BINOP_LEQ, PREC_ORDER, 0},
1004 {">=", BINOP_GEQ, PREC_ORDER, 0},
1005 {">", BINOP_GTR, PREC_ORDER, 0},
1006 {"<", BINOP_LESS, PREC_ORDER, 0},
1007 {">>", BINOP_RSH, PREC_SHIFT, 0},
1008 {"<<", BINOP_LSH, PREC_SHIFT, 0},
1010 {">>>", BINOP_ ? ? ?, PREC_SHIFT, 0},
1012 {"+", BINOP_ADD, PREC_ADD, 0},
1013 {"-", BINOP_SUB, PREC_ADD, 0},
1014 {"*", BINOP_MUL, PREC_MUL, 0},
1015 {"/", BINOP_DIV, PREC_MUL, 0},
1016 {"%", BINOP_REM, PREC_MUL, 0},
1017 {"-", UNOP_NEG, PREC_PREFIX, 0},
1018 {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
1019 {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
1020 {"*", UNOP_IND, PREC_PREFIX, 0},
1022 {"instanceof", ? ? ?, ? ? ?, 0},
1024 {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
1025 {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
1029 const struct language_defn java_language_defn =
1031 "java", /* Language name */
1039 evaluate_subexp_java,
1040 c_printchar, /* Print a character constant */
1041 c_printstr, /* Function to print string constant */
1042 java_emit_char, /* Function to print a single character */
1043 java_create_fundamental_type, /* Create fundamental type in this language */
1044 java_print_type, /* Print a type using appropriate syntax */
1045 java_val_print, /* Print a value using appropriate syntax */
1046 java_value_print, /* Print a top-level value */
1047 {"", "", "", ""}, /* Binary format info */
1048 {"0%lo", "0", "o", ""}, /* Octal format info */
1049 {"%ld", "", "d", ""}, /* Decimal format info */
1050 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1051 java_op_print_tab, /* expression operators for printing */
1052 0, /* not c-style arrays */
1053 0, /* String lower bound */
1054 &builtin_type_char, /* Type of string elements */
1059 _initialize_java_language (void)
1062 java_int_type = init_type (TYPE_CODE_INT, 4, 0, "int", NULL);
1063 java_short_type = init_type (TYPE_CODE_INT, 2, 0, "short", NULL);
1064 java_long_type = init_type (TYPE_CODE_INT, 8, 0, "long", NULL);
1065 java_byte_type = init_type (TYPE_CODE_INT, 1, 0, "byte", NULL);
1066 java_boolean_type = init_type (TYPE_CODE_BOOL, 1, 0, "boolean", NULL);
1067 java_char_type = init_type (TYPE_CODE_CHAR, 2, TYPE_FLAG_UNSIGNED, "char", NULL);
1068 java_float_type = init_type (TYPE_CODE_FLT, 4, 0, "float", NULL);
1069 java_double_type = init_type (TYPE_CODE_FLT, 8, 0, "double", NULL);
1070 java_void_type = init_type (TYPE_CODE_VOID, 1, 0, "void", NULL);
1072 add_language (&java_language_defn);
1075 /* Cleanup code that should be run on every "run".
1076 We should use make_run_cleanup to have this be called.
1077 But will that mess up values in value histry? FIXME */
1079 extern void java_rerun_cleanup (void);
1081 java_rerun_cleanup (void)
1083 if (class_symtab != NULL)
1085 free_symtab (class_symtab); /* ??? */
1086 class_symtab = NULL;
1088 if (dynamics_objfile != NULL)
1090 free_objfile (dynamics_objfile);
1091 dynamics_objfile = NULL;
1094 java_object_type = NULL;