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_HASHTABLE (bl) = 0;
110 BLOCK_START (bl) = 0;
112 BLOCK_FUNCTION (bl) = NULL;
113 BLOCK_SUPERBLOCK (bl) = NULL;
114 BLOCK_GCC_COMPILED (bl) = 0;
115 BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK) = bl;
117 /* Allocate GLOBAL_BLOCK. This has to be relocatable. */
118 class_symtab_space = 128;
119 bl = xmmalloc (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 = xmrealloc (symtab->objfile->md, bl,
140 sizeof (struct block)
141 + ((class_symtab_space - 1) * sizeof (struct symbol *)));
142 class_symtab->free_ptr = (char *) bl;
143 BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = bl;
146 BLOCK_SYM (bl, BLOCK_NSYMS (bl)) = sym;
147 BLOCK_NSYMS (bl) = BLOCK_NSYMS (bl) + 1;
150 static struct symbol *add_class_symbol (struct type *type, CORE_ADDR addr);
152 static struct symbol *
153 add_class_symbol (struct type *type, CORE_ADDR addr)
156 sym = (struct symbol *)
157 obstack_alloc (&dynamics_objfile->symbol_obstack, sizeof (struct symbol));
158 memset (sym, 0, sizeof (struct symbol));
159 SYMBOL_LANGUAGE (sym) = language_java;
160 SYMBOL_NAME (sym) = TYPE_TAG_NAME (type);
161 SYMBOL_CLASS (sym) = LOC_TYPEDEF;
162 /* SYMBOL_VALUE (sym) = valu; */
163 SYMBOL_TYPE (sym) = type;
164 SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE;
165 SYMBOL_VALUE_ADDRESS (sym) = addr;
171 java_lookup_class (char *name)
174 sym = lookup_symbol (name, expression_context_block, STRUCT_NAMESPACE,
175 (int *) 0, (struct symtab **) NULL);
177 return SYMBOL_TYPE (sym);
180 if (called from parser)
182 call lookup_class (or similar) in inferior;
186 addr = found in inferior;
191 type = alloc_type (objfile);
192 TYPE_CODE (type) = TYPE_CODE_STRUCT;
193 INIT_CPLUS_SPECIFIC (type);
194 TYPE_TAG_NAME (type) = obsavestring (name, strlen (name), &objfile->type_obstack);
195 TYPE_FLAGS (type) |= TYPE_FLAG_STUB;
199 /* FIXME - should search inferior's symbol table. */
204 /* Return a nul-terminated string (allocated on OBSTACK) for
205 a name given by NAME (which has type Utf8Const*). */
208 get_java_utf8_name (struct obstack *obstack, struct value *name)
211 struct value *temp = name;
214 temp = value_struct_elt (&temp, NULL, "length", NULL, "structure");
215 name_length = (int) value_as_long (temp);
216 data_addr = VALUE_ADDRESS (temp) + VALUE_OFFSET (temp)
217 + TYPE_LENGTH (VALUE_TYPE (temp));
218 chrs = obstack_alloc (obstack, name_length + 1);
219 chrs[name_length] = '\0';
220 read_memory (data_addr, chrs, name_length);
225 java_class_from_object (struct value *obj_val)
227 /* This is all rather inefficient, since the offsets of vtable and
228 class are fixed. FIXME */
229 struct value *vtable_val;
231 if (TYPE_CODE (VALUE_TYPE (obj_val)) == TYPE_CODE_PTR
232 && TYPE_LENGTH (TYPE_TARGET_TYPE (VALUE_TYPE (obj_val))) == 0)
233 obj_val = value_at (get_java_object_type (),
234 value_as_address (obj_val), NULL);
236 vtable_val = value_struct_elt (&obj_val, NULL, "vtable", NULL, "structure");
237 return value_struct_elt (&vtable_val, NULL, "class", NULL, "structure");
240 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
242 java_class_is_primitive (struct value *clas)
244 struct value *vtable = value_struct_elt (&clas, NULL, "vtable", NULL, "struct");
245 CORE_ADDR i = value_as_address (vtable);
246 return (int) (i & 0x7fffffff) == (int) 0x7fffffff;
249 /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
252 type_from_class (struct value *clas)
257 struct objfile *objfile;
258 struct value *utf8_name;
265 type = check_typedef (VALUE_TYPE (clas));
266 if (TYPE_CODE (type) == TYPE_CODE_PTR)
268 if (value_logical_not (clas))
270 clas = value_ind (clas);
272 addr = VALUE_ADDRESS (clas) + VALUE_OFFSET (clas);
275 get_java_class_symtab ();
276 bl = BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab), GLOBAL_BLOCK);
277 for (i = BLOCK_NSYMS (bl); --i >= 0;)
279 struct symbol *sym = BLOCK_SYM (bl, i);
280 if (SYMBOL_VALUE_ADDRESS (sym) == addr)
281 return SYMBOL_TYPE (sym);
285 objfile = get_dynamics_objfile ();
286 if (java_class_is_primitive (clas))
290 sig = value_struct_elt (&temp, NULL, "method_count", NULL, "structure");
291 return java_primitive_type (value_as_long (sig));
294 /* Get Class name. */
295 /* if clasloader non-null, prepend loader address. FIXME */
297 utf8_name = value_struct_elt (&temp, NULL, "name", NULL, "structure");
298 name = get_java_utf8_name (&objfile->type_obstack, utf8_name);
299 for (nptr = name; *nptr != 0; nptr++)
305 type = java_lookup_class (name);
309 type = alloc_type (objfile);
310 TYPE_CODE (type) = TYPE_CODE_STRUCT;
311 INIT_CPLUS_SPECIFIC (type);
315 char *signature = name;
316 int namelen = java_demangled_signature_length (signature);
317 if (namelen > strlen (name))
318 name = obstack_alloc (&objfile->type_obstack, namelen + 1);
319 java_demangled_signature_copy (name, signature);
320 name[namelen] = '\0';
323 /* Set array element type. */
324 temp = value_struct_elt (&temp, NULL, "methods", NULL, "structure");
325 VALUE_TYPE (temp) = lookup_pointer_type (VALUE_TYPE (clas));
326 TYPE_TARGET_TYPE (type) = type_from_class (temp);
329 ALLOCATE_CPLUS_STRUCT_TYPE (type);
330 TYPE_TAG_NAME (type) = name;
332 add_class_symtab_symbol (add_class_symbol (type, addr));
333 return java_link_class_type (type, clas);
336 /* Fill in class TYPE with data from the CLAS value. */
339 java_link_class_type (struct type *type, struct value *clas)
342 char *unqualified_name;
343 char *name = TYPE_TAG_NAME (type);
344 int ninterfaces, nfields, nmethods;
345 int type_is_object = 0;
346 struct fn_field *fn_fields;
347 struct fn_fieldlist *fn_fieldlists;
348 struct value *fields;
349 struct value *methods;
350 struct value *method = NULL;
351 struct value *field = NULL;
353 struct objfile *objfile = get_dynamics_objfile ();
356 unqualified_name = strrchr (name, '.');
357 if (unqualified_name == NULL)
358 unqualified_name = name;
361 temp = value_struct_elt (&temp, NULL, "superclass", NULL, "structure");
362 if (name != NULL && strcmp (name, "java.lang.Object") == 0)
364 tsuper = get_java_object_type ();
365 if (tsuper && TYPE_CODE (tsuper) == TYPE_CODE_PTR)
366 tsuper = TYPE_TARGET_TYPE (tsuper);
370 tsuper = type_from_class (temp);
376 ninterfaces = value_as_long (value_struct_elt (&temp, NULL, "interface_len", NULL, "structure"));
378 TYPE_N_BASECLASSES (type) = (tsuper == NULL ? 0 : 1) + ninterfaces;
380 nfields = value_as_long (value_struct_elt (&temp, NULL, "field_count", NULL, "structure"));
381 nfields += TYPE_N_BASECLASSES (type);
382 nfields++; /* Add one for dummy "class" field. */
383 TYPE_NFIELDS (type) = nfields;
384 TYPE_FIELDS (type) = (struct field *)
385 TYPE_ALLOC (type, sizeof (struct field) * nfields);
387 memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields);
389 TYPE_FIELD_PRIVATE_BITS (type) =
390 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
391 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields);
393 TYPE_FIELD_PROTECTED_BITS (type) =
394 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
395 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields);
397 TYPE_FIELD_IGNORE_BITS (type) =
398 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
399 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields);
401 TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *)
402 TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type)));
403 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type));
407 TYPE_BASECLASS (type, 0) = tsuper;
409 SET_TYPE_FIELD_PRIVATE (type, 0);
413 if (i > 2 && name[i - 1] == ']' && tsuper != NULL)
416 TYPE_LENGTH (type) = TYPE_LENGTH (tsuper) + 4; /* size with "length" */
421 temp = value_struct_elt (&temp, NULL, "size_in_bytes", NULL, "structure");
422 TYPE_LENGTH (type) = value_as_long (temp);
426 nfields--; /* First set up dummy "class" field. */
427 SET_FIELD_PHYSADDR (TYPE_FIELD (type, nfields),
428 VALUE_ADDRESS (clas) + VALUE_OFFSET (clas));
429 TYPE_FIELD_NAME (type, nfields) = "class";
430 TYPE_FIELD_TYPE (type, nfields) = VALUE_TYPE (clas);
431 SET_TYPE_FIELD_PRIVATE (type, nfields);
433 for (i = TYPE_N_BASECLASSES (type); i < nfields; i++)
440 fields = value_struct_elt (&temp, NULL, "fields", NULL, "structure");
441 field = value_ind (fields);
444 { /* Re-use field value for next field. */
445 VALUE_ADDRESS (field) += TYPE_LENGTH (VALUE_TYPE (field));
446 VALUE_LAZY (field) = 1;
449 temp = value_struct_elt (&temp, NULL, "name", NULL, "structure");
450 TYPE_FIELD_NAME (type, i) =
451 get_java_utf8_name (&objfile->type_obstack, temp);
453 accflags = value_as_long (value_struct_elt (&temp, NULL, "accflags",
456 temp = value_struct_elt (&temp, NULL, "info", NULL, "structure");
457 boffset = value_as_long (value_struct_elt (&temp, NULL, "boffset",
459 if (accflags & 0x0001) /* public access */
463 if (accflags & 0x0002) /* private access */
465 SET_TYPE_FIELD_PRIVATE (type, i);
467 if (accflags & 0x0004) /* protected access */
469 SET_TYPE_FIELD_PROTECTED (type, i);
471 if (accflags & 0x0008) /* ACC_STATIC */
472 SET_FIELD_PHYSADDR (TYPE_FIELD (type, i), boffset);
474 TYPE_FIELD_BITPOS (type, i) = 8 * boffset;
475 if (accflags & 0x8000) /* FIELD_UNRESOLVED_FLAG */
477 TYPE_FIELD_TYPE (type, i) = get_java_object_type (); /* FIXME */
483 temp = value_struct_elt (&temp, NULL, "type", NULL, "structure");
484 ftype = type_from_class (temp);
485 if (TYPE_CODE (ftype) == TYPE_CODE_STRUCT)
486 ftype = lookup_pointer_type (ftype);
487 TYPE_FIELD_TYPE (type, i) = ftype;
492 nmethods = value_as_long (value_struct_elt (&temp, NULL, "method_count",
494 TYPE_NFN_FIELDS_TOTAL (type) = nmethods;
495 j = nmethods * sizeof (struct fn_field);
496 fn_fields = (struct fn_field *)
497 obstack_alloc (&dynamics_objfile->symbol_obstack, j);
498 memset (fn_fields, 0, j);
499 fn_fieldlists = (struct fn_fieldlist *)
500 alloca (nmethods * sizeof (struct fn_fieldlist));
503 for (i = 0; i < nmethods; i++)
510 methods = value_struct_elt (&temp, NULL, "methods", NULL, "structure");
511 method = value_ind (methods);
514 { /* Re-use method value for next method. */
515 VALUE_ADDRESS (method) += TYPE_LENGTH (VALUE_TYPE (method));
516 VALUE_LAZY (method) = 1;
519 /* Get method name. */
521 temp = value_struct_elt (&temp, NULL, "name", NULL, "structure");
522 mname = get_java_utf8_name (&objfile->type_obstack, temp);
523 if (strcmp (mname, "<init>") == 0)
524 mname = unqualified_name;
526 /* Check for an existing method with the same name.
527 * This makes building the fn_fieldslists an O(nmethods**2)
528 * operation. That could be using hashing, but I doubt it
529 * is worth it. Note that we do maintain the order of methods
530 * in the inferior's Method table (as long as that is grouped
531 * by method name), which I think is desirable. --PB */
532 for (k = 0, j = TYPE_NFN_FIELDS (type);;)
535 { /* No match - new method name. */
536 j = TYPE_NFN_FIELDS (type)++;
537 fn_fieldlists[j].name = mname;
538 fn_fieldlists[j].length = 1;
539 fn_fieldlists[j].fn_fields = &fn_fields[i];
543 if (strcmp (mname, fn_fieldlists[j].name) == 0)
544 { /* Found an existing method with the same name. */
546 if (mname != unqualified_name)
547 obstack_free (&objfile->type_obstack, mname);
548 mname = fn_fieldlists[j].name;
549 fn_fieldlists[j].length++;
550 k = i - k; /* Index of new slot. */
551 /* Shift intervening fn_fields (between k and i) down. */
552 for (l = i; l > k; l--)
553 fn_fields[l] = fn_fields[l - 1];
554 for (l = TYPE_NFN_FIELDS (type); --l > j;)
555 fn_fieldlists[l].fn_fields++;
558 k += fn_fieldlists[j].length;
560 fn_fields[k].physname = "";
561 fn_fields[k].is_stub = 1;
562 fn_fields[k].type = make_function_type (java_void_type, NULL); /* FIXME */
563 TYPE_CODE (fn_fields[k].type) = TYPE_CODE_METHOD;
566 j = TYPE_NFN_FIELDS (type) * sizeof (struct fn_fieldlist);
567 TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *)
568 obstack_alloc (&dynamics_objfile->symbol_obstack, j);
569 memcpy (TYPE_FN_FIELDLISTS (type), fn_fieldlists, j);
574 static struct type *java_object_type;
577 get_java_object_type (void)
579 if (java_object_type == NULL)
582 sym = lookup_symbol ("java.lang.Object", NULL, STRUCT_NAMESPACE,
583 (int *) 0, (struct symtab **) NULL);
585 error ("cannot find java.lang.Object");
586 java_object_type = SYMBOL_TYPE (sym);
588 return java_object_type;
592 get_java_object_header_size (void)
594 struct type *objtype = get_java_object_type ();
596 return (2 * TARGET_PTR_BIT / TARGET_CHAR_BIT);
598 return TYPE_LENGTH (objtype);
602 is_object_type (struct type *type)
604 CHECK_TYPEDEF (type);
605 if (TYPE_CODE (type) == TYPE_CODE_PTR)
607 struct type *ttype = check_typedef (TYPE_TARGET_TYPE (type));
609 if (TYPE_CODE (ttype) != TYPE_CODE_STRUCT)
611 while (TYPE_N_BASECLASSES (ttype) > 0)
612 ttype = TYPE_BASECLASS (ttype, 0);
613 name = TYPE_TAG_NAME (ttype);
614 if (name != NULL && strcmp (name, "java.lang.Object") == 0)
616 name = TYPE_NFIELDS (ttype) > 0 ? TYPE_FIELD_NAME (ttype, 0) : (char *) 0;
617 if (name != NULL && strcmp (name, "vtable") == 0)
619 if (java_object_type == NULL)
620 java_object_type = type;
628 java_primitive_type (int signature)
633 return java_byte_type;
635 return java_short_type;
637 return java_int_type;
639 return java_long_type;
641 return java_boolean_type;
643 return java_char_type;
645 return java_float_type;
647 return java_double_type;
649 return java_void_type;
651 error ("unknown signature '%c' for primitive type", (char) signature);
654 /* If name[0 .. namelen-1] is the name of a primitive Java type,
655 return that type. Otherwise, return NULL. */
658 java_primitive_type_from_name (char *name, int namelen)
663 if (namelen == 4 && memcmp (name, "byte", 4) == 0)
664 return java_byte_type;
665 if (namelen == 7 && memcmp (name, "boolean", 7) == 0)
666 return java_boolean_type;
669 if (namelen == 4 && memcmp (name, "char", 4) == 0)
670 return java_char_type;
672 if (namelen == 6 && memcmp (name, "double", 6) == 0)
673 return java_double_type;
676 if (namelen == 5 && memcmp (name, "float", 5) == 0)
677 return java_float_type;
680 if (namelen == 3 && memcmp (name, "int", 3) == 0)
681 return java_int_type;
684 if (namelen == 4 && memcmp (name, "long", 4) == 0)
685 return java_long_type;
688 if (namelen == 5 && memcmp (name, "short", 5) == 0)
689 return java_short_type;
692 if (namelen == 4 && memcmp (name, "void", 4) == 0)
693 return java_void_type;
699 /* Return the length (in bytes) of demangled name of the Java type
700 signature string SIGNATURE. */
703 java_demangled_signature_length (char *signature)
706 for (; *signature == '['; signature++)
707 array += 2; /* Two chars for "[]". */
708 switch (signature[0])
711 /* Subtract 2 for 'L' and ';'. */
712 return strlen (signature) - 2 + array;
714 return strlen (TYPE_NAME (java_primitive_type (signature[0]))) + array;
718 /* Demangle the Java type signature SIGNATURE, leaving the result in RESULT. */
721 java_demangled_signature_copy (char *result, char *signature)
726 while (*signature == '[')
731 switch (signature[0])
734 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
737 for (; *signature != ';' && *signature != '\0'; signature++)
739 if (*signature == '/')
746 ptr = TYPE_NAME (java_primitive_type (signature[0]));
748 strcpy (result, ptr);
759 /* Return the demangled name of the Java type signature string SIGNATURE,
760 as a freshly allocated copy. */
763 java_demangle_type_signature (char *signature)
765 int length = java_demangled_signature_length (signature);
766 char *result = xmalloc (length + 1);
767 java_demangled_signature_copy (result, signature);
768 result[length] = '\0';
773 java_lookup_type (char *signature)
775 switch (signature[0])
779 error ("java_lookup_type not fully implemented");
781 return java_primitive_type (signature[0]);
785 /* Return the type of TYPE followed by DIMS pairs of [ ].
786 If DIMS == 0, TYPE is returned. */
789 java_array_type (struct type *type, int dims)
791 struct type *range_type;
795 range_type = create_range_type (NULL, builtin_type_int, 0, 0);
796 /* FIXME This is bogus! Java arrays are not gdb arrays! */
797 type = create_array_type (NULL, type, range_type);
803 /* Create a Java string in the inferior from a (Utf8) literal. */
805 static struct value *
806 java_value_string (char *ptr, int len)
808 error ("not implemented - java_value_string"); /* FIXME */
811 /* Print the character C on STREAM as part of the contents of a literal
812 string whose delimiter is QUOTER. Note that that format for printing
813 characters and strings is language specific. */
816 java_emit_char (int c, struct ui_file *stream, int quoter)
822 fprintf_filtered (stream, "\\%c", c);
825 fputs_filtered ("\\b", stream);
828 fputs_filtered ("\\t", stream);
831 fputs_filtered ("\\n", stream);
834 fputs_filtered ("\\f", stream);
837 fputs_filtered ("\\r", stream);
841 fputc_filtered (c, stream);
843 fprintf_filtered (stream, "\\u%.4x", (unsigned int) c);
848 static struct value *
849 evaluate_subexp_java (struct type *expect_type, register struct expression *exp,
850 register int *pos, enum noside noside)
855 enum exp_opcode op = exp->elts[*pos].opcode;
862 if (noside == EVAL_SKIP)
865 arg1 = evaluate_subexp_java (NULL_TYPE, exp, pos, EVAL_NORMAL);
866 if (is_object_type (VALUE_TYPE (arg1)))
870 type = type_from_class (java_class_from_object (arg1));
871 arg1 = value_cast (lookup_pointer_type (type), arg1);
873 if (noside == EVAL_SKIP)
875 return value_ind (arg1);
877 case BINOP_SUBSCRIPT:
879 arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
880 arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
881 if (noside == EVAL_SKIP)
883 /* If the user attempts to subscript something that is not an
884 array or pointer type (like a plain int variable for example),
885 then report this as an error. */
888 type = check_typedef (VALUE_TYPE (arg1));
889 if (TYPE_CODE (type) == TYPE_CODE_PTR)
890 type = check_typedef (TYPE_TARGET_TYPE (type));
891 name = TYPE_NAME (type);
893 name = TYPE_TAG_NAME (type);
894 i = name == NULL ? 0 : strlen (name);
895 if (TYPE_CODE (type) == TYPE_CODE_STRUCT
896 && i > 2 && name[i - 1] == ']')
900 struct type *el_type;
903 struct value *clas = java_class_from_object (arg1);
904 struct value *temp = clas;
905 /* Get CLASS_ELEMENT_TYPE of the array type. */
906 temp = value_struct_elt (&temp, NULL, "methods",
908 VALUE_TYPE (temp) = VALUE_TYPE (clas);
909 el_type = type_from_class (temp);
910 if (TYPE_CODE (el_type) == TYPE_CODE_STRUCT)
911 el_type = lookup_pointer_type (el_type);
913 if (noside == EVAL_AVOID_SIDE_EFFECTS)
914 return value_zero (el_type, VALUE_LVAL (arg1));
915 address = value_as_address (arg1);
916 address += JAVA_OBJECT_SIZE;
917 read_memory (address, buf4, 4);
918 length = (long) extract_signed_integer (buf4, 4);
919 index = (long) value_as_long (arg2);
920 if (index >= length || index < 0)
921 error ("array index (%ld) out of bounds (length: %ld)",
923 address = (address + 4) + index * TYPE_LENGTH (el_type);
924 return value_at (el_type, address, NULL);
926 else if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
928 if (noside == EVAL_AVOID_SIDE_EFFECTS)
929 return value_zero (TYPE_TARGET_TYPE (type), VALUE_LVAL (arg1));
931 return value_subscript (arg1, arg2);
934 error ("cannot subscript something of type `%s'", name);
936 error ("cannot subscript requested type");
940 i = longest_to_int (exp->elts[pc + 1].longconst);
941 (*pos) += 3 + BYTES_TO_EXP_ELEM (i + 1);
942 if (noside == EVAL_SKIP)
944 return java_value_string (&exp->elts[pc + 2].string, i);
946 case STRUCTOP_STRUCT:
947 arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside);
948 /* Convert object field (such as TYPE.class) to reference. */
949 if (TYPE_CODE (VALUE_TYPE (arg1)) == TYPE_CODE_STRUCT)
950 arg1 = value_addr (arg1);
956 return evaluate_subexp_standard (expect_type, exp, pos, noside);
958 return value_from_longest (builtin_type_long, (LONGEST) 1);
962 java_create_fundamental_type (struct objfile *objfile, int typeid)
967 return java_void_type;
969 return java_boolean_type;
971 return java_char_type;
973 return java_float_type;
974 case FT_DBL_PREC_FLOAT:
975 return java_double_type;
978 return java_byte_type;
980 case FT_SIGNED_SHORT:
981 return java_short_type;
983 case FT_SIGNED_INTEGER:
984 return java_int_type;
987 return java_long_type;
989 return c_create_fundamental_type (objfile, typeid);
992 /* Table mapping opcodes into strings for printing operators
993 and precedences of the operators. */
995 const struct op_print java_op_print_tab[] =
997 {",", BINOP_COMMA, PREC_COMMA, 0},
998 {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
999 {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
1000 {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
1001 {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
1002 {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
1003 {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
1004 {"==", BINOP_EQUAL, PREC_EQUAL, 0},
1005 {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
1006 {"<=", BINOP_LEQ, PREC_ORDER, 0},
1007 {">=", BINOP_GEQ, PREC_ORDER, 0},
1008 {">", BINOP_GTR, PREC_ORDER, 0},
1009 {"<", BINOP_LESS, PREC_ORDER, 0},
1010 {">>", BINOP_RSH, PREC_SHIFT, 0},
1011 {"<<", BINOP_LSH, PREC_SHIFT, 0},
1013 {">>>", BINOP_ ? ? ?, PREC_SHIFT, 0},
1015 {"+", BINOP_ADD, PREC_ADD, 0},
1016 {"-", BINOP_SUB, PREC_ADD, 0},
1017 {"*", BINOP_MUL, PREC_MUL, 0},
1018 {"/", BINOP_DIV, PREC_MUL, 0},
1019 {"%", BINOP_REM, PREC_MUL, 0},
1020 {"-", UNOP_NEG, PREC_PREFIX, 0},
1021 {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
1022 {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
1023 {"*", UNOP_IND, PREC_PREFIX, 0},
1025 {"instanceof", ? ? ?, ? ? ?, 0},
1027 {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
1028 {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
1032 const struct language_defn java_language_defn =
1034 "java", /* Language name */
1042 evaluate_subexp_java,
1043 c_printchar, /* Print a character constant */
1044 c_printstr, /* Function to print string constant */
1045 java_emit_char, /* Function to print a single character */
1046 java_create_fundamental_type, /* Create fundamental type in this language */
1047 java_print_type, /* Print a type using appropriate syntax */
1048 java_val_print, /* Print a value using appropriate syntax */
1049 java_value_print, /* Print a top-level value */
1050 {"", "", "", ""}, /* Binary format info */
1051 {"0%lo", "0", "o", ""}, /* Octal format info */
1052 {"%ld", "", "d", ""}, /* Decimal format info */
1053 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1054 java_op_print_tab, /* expression operators for printing */
1055 0, /* not c-style arrays */
1056 0, /* String lower bound */
1057 &builtin_type_char, /* Type of string elements */
1062 _initialize_java_language (void)
1065 java_int_type = init_type (TYPE_CODE_INT, 4, 0, "int", NULL);
1066 java_short_type = init_type (TYPE_CODE_INT, 2, 0, "short", NULL);
1067 java_long_type = init_type (TYPE_CODE_INT, 8, 0, "long", NULL);
1068 java_byte_type = init_type (TYPE_CODE_INT, 1, 0, "byte", NULL);
1069 java_boolean_type = init_type (TYPE_CODE_BOOL, 1, 0, "boolean", NULL);
1070 java_char_type = init_type (TYPE_CODE_CHAR, 2, TYPE_FLAG_UNSIGNED, "char", NULL);
1071 java_float_type = init_type (TYPE_CODE_FLT, 4, 0, "float", NULL);
1072 java_double_type = init_type (TYPE_CODE_FLT, 8, 0, "double", NULL);
1073 java_void_type = init_type (TYPE_CODE_VOID, 1, 0, "void", NULL);
1075 add_language (&java_language_defn);
1078 /* Cleanup code that should be run on every "run".
1079 We should use make_run_cleanup to have this be called.
1080 But will that mess up values in value histry? FIXME */
1082 extern void java_rerun_cleanup (void);
1084 java_rerun_cleanup (void)
1086 if (class_symtab != NULL)
1088 free_symtab (class_symtab); /* ??? */
1089 class_symtab = NULL;
1091 if (dynamics_objfile != NULL)
1093 free_objfile (dynamics_objfile);
1094 dynamics_objfile = NULL;
1097 java_object_type = NULL;