1 /* Java language support routines for GDB, the GNU debugger.
2 Copyright 1997, 1998, 1999, 2000, 2003 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"
39 struct type *java_int_type;
40 struct type *java_byte_type;
41 struct type *java_short_type;
42 struct type *java_long_type;
43 struct type *java_boolean_type;
44 struct type *java_char_type;
45 struct type *java_float_type;
46 struct type *java_double_type;
47 struct type *java_void_type;
51 extern void _initialize_java_language (void);
53 static int java_demangled_signature_length (char *);
54 static void java_demangled_signature_copy (char *, char *);
56 static struct symtab *get_java_class_symtab (void);
57 static char *get_java_utf8_name (struct obstack *obstack, struct value *name);
58 static int java_class_is_primitive (struct value *clas);
59 static struct type *java_lookup_type (char *signature);
60 static struct value *java_value_string (char *ptr, int len);
62 static void java_emit_char (int c, struct ui_file * stream, int quoter);
64 /* This objfile contains symtabs that have been dynamically created
65 to record dynamically loaded Java classes and dynamically
66 compiled java methods. */
68 static struct objfile *dynamics_objfile = NULL;
70 static struct type *java_link_class_type (struct type *, struct value *);
72 /* FIXME: carlton/2003-02-04: This is the main or only caller of
73 allocate_objfile with first argument NULL; as a result, this code
74 breaks every so often. Somebody should write a test case that
75 exercises GDB in various ways (e.g. something involving loading a
76 dynamic library) after this code has been called. */
78 static struct objfile *
79 get_dynamics_objfile (void)
81 if (dynamics_objfile == NULL)
83 dynamics_objfile = allocate_objfile (NULL, 0);
85 return dynamics_objfile;
89 /* symtab contains classes read from the inferior. */
91 static struct symtab *class_symtab = NULL;
93 /* Maximum number of class in class_symtab before relocation is needed. */
95 static int class_symtab_space;
97 static struct symtab *
98 get_java_class_symtab (void)
100 if (class_symtab == NULL)
102 struct objfile *objfile = get_dynamics_objfile ();
103 struct blockvector *bv;
105 class_symtab = allocate_symtab ("<java-classes>", objfile);
106 class_symtab->language = language_java;
107 bv = (struct blockvector *)
108 obstack_alloc (&objfile->symbol_obstack, sizeof (struct blockvector));
109 BLOCKVECTOR_NBLOCKS (bv) = 1;
110 BLOCKVECTOR (class_symtab) = bv;
112 /* Allocate dummy STATIC_BLOCK. */
113 bl = (struct block *)
114 obstack_alloc (&objfile->symbol_obstack, sizeof (struct block));
115 BLOCK_NSYMS (bl) = 0;
116 BLOCK_HASHTABLE (bl) = 0;
117 BLOCK_START (bl) = 0;
119 BLOCK_FUNCTION (bl) = NULL;
120 BLOCK_SUPERBLOCK (bl) = NULL;
121 BLOCK_GCC_COMPILED (bl) = 0;
122 BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK) = bl;
124 /* Allocate GLOBAL_BLOCK. This has to be relocatable. */
125 class_symtab_space = 128;
126 bl = xmmalloc (objfile->md,
127 sizeof (struct block)
128 + ((class_symtab_space - 1) * sizeof (struct symbol *)));
129 *bl = *BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
130 BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = bl;
131 class_symtab->free_ptr = (char *) bl;
137 add_class_symtab_symbol (struct symbol *sym)
139 struct symtab *symtab = get_java_class_symtab ();
140 struct blockvector *bv = BLOCKVECTOR (symtab);
141 struct block *bl = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
142 if (BLOCK_NSYMS (bl) >= class_symtab_space)
144 /* Need to re-allocate. */
145 class_symtab_space *= 2;
146 bl = xmrealloc (symtab->objfile->md, bl,
147 sizeof (struct block)
148 + ((class_symtab_space - 1) * sizeof (struct symbol *)));
149 class_symtab->free_ptr = (char *) bl;
150 BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = bl;
153 BLOCK_SYM (bl, BLOCK_NSYMS (bl)) = sym;
154 BLOCK_NSYMS (bl) = BLOCK_NSYMS (bl) + 1;
157 static struct symbol *add_class_symbol (struct type *type, CORE_ADDR addr);
159 static struct symbol *
160 add_class_symbol (struct type *type, CORE_ADDR addr)
163 sym = (struct symbol *)
164 obstack_alloc (&dynamics_objfile->symbol_obstack, sizeof (struct symbol));
165 memset (sym, 0, sizeof (struct symbol));
166 SYMBOL_LANGUAGE (sym) = language_java;
167 DEPRECATED_SYMBOL_NAME (sym) = TYPE_TAG_NAME (type);
168 SYMBOL_CLASS (sym) = LOC_TYPEDEF;
169 /* SYMBOL_VALUE (sym) = valu; */
170 SYMBOL_TYPE (sym) = type;
171 SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE;
172 SYMBOL_VALUE_ADDRESS (sym) = addr;
178 java_lookup_class (char *name)
181 sym = lookup_symbol (name, expression_context_block, STRUCT_NAMESPACE,
182 (int *) 0, (struct symtab **) NULL);
184 return SYMBOL_TYPE (sym);
187 if (called from parser)
189 call lookup_class (or similar) in inferior;
193 addr = found in inferior;
198 type = alloc_type (objfile);
199 TYPE_CODE (type) = TYPE_CODE_STRUCT;
200 INIT_CPLUS_SPECIFIC (type);
201 TYPE_TAG_NAME (type) = obsavestring (name, strlen (name), &objfile->type_obstack);
202 TYPE_FLAGS (type) |= TYPE_FLAG_STUB;
206 /* FIXME - should search inferior's symbol table. */
211 /* Return a nul-terminated string (allocated on OBSTACK) for
212 a name given by NAME (which has type Utf8Const*). */
215 get_java_utf8_name (struct obstack *obstack, struct value *name)
218 struct value *temp = name;
221 temp = value_struct_elt (&temp, NULL, "length", NULL, "structure");
222 name_length = (int) value_as_long (temp);
223 data_addr = VALUE_ADDRESS (temp) + VALUE_OFFSET (temp)
224 + TYPE_LENGTH (VALUE_TYPE (temp));
225 chrs = obstack_alloc (obstack, name_length + 1);
226 chrs[name_length] = '\0';
227 read_memory (data_addr, chrs, name_length);
232 java_class_from_object (struct value *obj_val)
234 /* This is all rather inefficient, since the offsets of vtable and
235 class are fixed. FIXME */
236 struct value *vtable_val;
238 if (TYPE_CODE (VALUE_TYPE (obj_val)) == TYPE_CODE_PTR
239 && TYPE_LENGTH (TYPE_TARGET_TYPE (VALUE_TYPE (obj_val))) == 0)
240 obj_val = value_at (get_java_object_type (),
241 value_as_address (obj_val), NULL);
243 vtable_val = value_struct_elt (&obj_val, NULL, "vtable", NULL, "structure");
244 return value_struct_elt (&vtable_val, NULL, "class", NULL, "structure");
247 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
249 java_class_is_primitive (struct value *clas)
251 struct value *vtable = value_struct_elt (&clas, NULL, "vtable", NULL, "struct");
252 CORE_ADDR i = value_as_address (vtable);
253 return (int) (i & 0x7fffffff) == (int) 0x7fffffff;
256 /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
259 type_from_class (struct value *clas)
264 struct objfile *objfile;
265 struct value *utf8_name;
272 type = check_typedef (VALUE_TYPE (clas));
273 if (TYPE_CODE (type) == TYPE_CODE_PTR)
275 if (value_logical_not (clas))
277 clas = value_ind (clas);
279 addr = VALUE_ADDRESS (clas) + VALUE_OFFSET (clas);
282 get_java_class_symtab ();
283 bl = BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab), GLOBAL_BLOCK);
284 for (i = BLOCK_NSYMS (bl); --i >= 0;)
286 struct symbol *sym = BLOCK_SYM (bl, i);
287 if (SYMBOL_VALUE_ADDRESS (sym) == addr)
288 return SYMBOL_TYPE (sym);
292 objfile = get_dynamics_objfile ();
293 if (java_class_is_primitive (clas))
297 sig = value_struct_elt (&temp, NULL, "method_count", NULL, "structure");
298 return java_primitive_type (value_as_long (sig));
301 /* Get Class name. */
302 /* if clasloader non-null, prepend loader address. FIXME */
304 utf8_name = value_struct_elt (&temp, NULL, "name", NULL, "structure");
305 name = get_java_utf8_name (&objfile->type_obstack, utf8_name);
306 for (nptr = name; *nptr != 0; nptr++)
312 type = java_lookup_class (name);
316 type = alloc_type (objfile);
317 TYPE_CODE (type) = TYPE_CODE_STRUCT;
318 INIT_CPLUS_SPECIFIC (type);
322 char *signature = name;
323 int namelen = java_demangled_signature_length (signature);
324 if (namelen > strlen (name))
325 name = obstack_alloc (&objfile->type_obstack, namelen + 1);
326 java_demangled_signature_copy (name, signature);
327 name[namelen] = '\0';
330 /* Set array element type. */
331 temp = value_struct_elt (&temp, NULL, "methods", NULL, "structure");
332 VALUE_TYPE (temp) = lookup_pointer_type (VALUE_TYPE (clas));
333 TYPE_TARGET_TYPE (type) = type_from_class (temp);
336 ALLOCATE_CPLUS_STRUCT_TYPE (type);
337 TYPE_TAG_NAME (type) = name;
339 add_class_symtab_symbol (add_class_symbol (type, addr));
340 return java_link_class_type (type, clas);
343 /* Fill in class TYPE with data from the CLAS value. */
346 java_link_class_type (struct type *type, struct value *clas)
349 char *unqualified_name;
350 char *name = TYPE_TAG_NAME (type);
351 int ninterfaces, nfields, nmethods;
352 int type_is_object = 0;
353 struct fn_field *fn_fields;
354 struct fn_fieldlist *fn_fieldlists;
355 struct value *fields;
356 struct value *methods;
357 struct value *method = NULL;
358 struct value *field = NULL;
360 struct objfile *objfile = get_dynamics_objfile ();
363 unqualified_name = strrchr (name, '.');
364 if (unqualified_name == NULL)
365 unqualified_name = name;
368 temp = value_struct_elt (&temp, NULL, "superclass", NULL, "structure");
369 if (name != NULL && strcmp (name, "java.lang.Object") == 0)
371 tsuper = get_java_object_type ();
372 if (tsuper && TYPE_CODE (tsuper) == TYPE_CODE_PTR)
373 tsuper = TYPE_TARGET_TYPE (tsuper);
377 tsuper = type_from_class (temp);
383 ninterfaces = value_as_long (value_struct_elt (&temp, NULL, "interface_len", NULL, "structure"));
385 TYPE_N_BASECLASSES (type) = (tsuper == NULL ? 0 : 1) + ninterfaces;
387 nfields = value_as_long (value_struct_elt (&temp, NULL, "field_count", NULL, "structure"));
388 nfields += TYPE_N_BASECLASSES (type);
389 nfields++; /* Add one for dummy "class" field. */
390 TYPE_NFIELDS (type) = nfields;
391 TYPE_FIELDS (type) = (struct field *)
392 TYPE_ALLOC (type, sizeof (struct field) * nfields);
394 memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields);
396 TYPE_FIELD_PRIVATE_BITS (type) =
397 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
398 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields);
400 TYPE_FIELD_PROTECTED_BITS (type) =
401 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
402 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields);
404 TYPE_FIELD_IGNORE_BITS (type) =
405 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
406 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields);
408 TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *)
409 TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type)));
410 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type));
414 TYPE_BASECLASS (type, 0) = tsuper;
416 SET_TYPE_FIELD_PRIVATE (type, 0);
420 if (i > 2 && name[i - 1] == ']' && tsuper != NULL)
423 TYPE_LENGTH (type) = TYPE_LENGTH (tsuper) + 4; /* size with "length" */
428 temp = value_struct_elt (&temp, NULL, "size_in_bytes", NULL, "structure");
429 TYPE_LENGTH (type) = value_as_long (temp);
433 nfields--; /* First set up dummy "class" field. */
434 SET_FIELD_PHYSADDR (TYPE_FIELD (type, nfields),
435 VALUE_ADDRESS (clas) + VALUE_OFFSET (clas));
436 TYPE_FIELD_NAME (type, nfields) = "class";
437 TYPE_FIELD_TYPE (type, nfields) = VALUE_TYPE (clas);
438 SET_TYPE_FIELD_PRIVATE (type, nfields);
440 for (i = TYPE_N_BASECLASSES (type); i < nfields; i++)
447 fields = value_struct_elt (&temp, NULL, "fields", NULL, "structure");
448 field = value_ind (fields);
451 { /* Re-use field value for next field. */
452 VALUE_ADDRESS (field) += TYPE_LENGTH (VALUE_TYPE (field));
453 VALUE_LAZY (field) = 1;
456 temp = value_struct_elt (&temp, NULL, "name", NULL, "structure");
457 TYPE_FIELD_NAME (type, i) =
458 get_java_utf8_name (&objfile->type_obstack, temp);
460 accflags = value_as_long (value_struct_elt (&temp, NULL, "accflags",
463 temp = value_struct_elt (&temp, NULL, "info", NULL, "structure");
464 boffset = value_as_long (value_struct_elt (&temp, NULL, "boffset",
466 if (accflags & 0x0001) /* public access */
470 if (accflags & 0x0002) /* private access */
472 SET_TYPE_FIELD_PRIVATE (type, i);
474 if (accflags & 0x0004) /* protected access */
476 SET_TYPE_FIELD_PROTECTED (type, i);
478 if (accflags & 0x0008) /* ACC_STATIC */
479 SET_FIELD_PHYSADDR (TYPE_FIELD (type, i), boffset);
481 TYPE_FIELD_BITPOS (type, i) = 8 * boffset;
482 if (accflags & 0x8000) /* FIELD_UNRESOLVED_FLAG */
484 TYPE_FIELD_TYPE (type, i) = get_java_object_type (); /* FIXME */
490 temp = value_struct_elt (&temp, NULL, "type", NULL, "structure");
491 ftype = type_from_class (temp);
492 if (TYPE_CODE (ftype) == TYPE_CODE_STRUCT)
493 ftype = lookup_pointer_type (ftype);
494 TYPE_FIELD_TYPE (type, i) = ftype;
499 nmethods = value_as_long (value_struct_elt (&temp, NULL, "method_count",
501 TYPE_NFN_FIELDS_TOTAL (type) = nmethods;
502 j = nmethods * sizeof (struct fn_field);
503 fn_fields = (struct fn_field *)
504 obstack_alloc (&dynamics_objfile->symbol_obstack, j);
505 memset (fn_fields, 0, j);
506 fn_fieldlists = (struct fn_fieldlist *)
507 alloca (nmethods * sizeof (struct fn_fieldlist));
510 for (i = 0; i < nmethods; i++)
517 methods = value_struct_elt (&temp, NULL, "methods", NULL, "structure");
518 method = value_ind (methods);
521 { /* Re-use method value for next method. */
522 VALUE_ADDRESS (method) += TYPE_LENGTH (VALUE_TYPE (method));
523 VALUE_LAZY (method) = 1;
526 /* Get method name. */
528 temp = value_struct_elt (&temp, NULL, "name", NULL, "structure");
529 mname = get_java_utf8_name (&objfile->type_obstack, temp);
530 if (strcmp (mname, "<init>") == 0)
531 mname = unqualified_name;
533 /* Check for an existing method with the same name.
534 * This makes building the fn_fieldslists an O(nmethods**2)
535 * operation. That could be using hashing, but I doubt it
536 * is worth it. Note that we do maintain the order of methods
537 * in the inferior's Method table (as long as that is grouped
538 * by method name), which I think is desirable. --PB */
539 for (k = 0, j = TYPE_NFN_FIELDS (type);;)
542 { /* No match - new method name. */
543 j = TYPE_NFN_FIELDS (type)++;
544 fn_fieldlists[j].name = mname;
545 fn_fieldlists[j].length = 1;
546 fn_fieldlists[j].fn_fields = &fn_fields[i];
550 if (strcmp (mname, fn_fieldlists[j].name) == 0)
551 { /* Found an existing method with the same name. */
553 if (mname != unqualified_name)
554 obstack_free (&objfile->type_obstack, mname);
555 mname = fn_fieldlists[j].name;
556 fn_fieldlists[j].length++;
557 k = i - k; /* Index of new slot. */
558 /* Shift intervening fn_fields (between k and i) down. */
559 for (l = i; l > k; l--)
560 fn_fields[l] = fn_fields[l - 1];
561 for (l = TYPE_NFN_FIELDS (type); --l > j;)
562 fn_fieldlists[l].fn_fields++;
565 k += fn_fieldlists[j].length;
567 fn_fields[k].physname = "";
568 fn_fields[k].is_stub = 1;
569 fn_fields[k].type = make_function_type (java_void_type, NULL); /* FIXME */
570 TYPE_CODE (fn_fields[k].type) = TYPE_CODE_METHOD;
573 j = TYPE_NFN_FIELDS (type) * sizeof (struct fn_fieldlist);
574 TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *)
575 obstack_alloc (&dynamics_objfile->symbol_obstack, j);
576 memcpy (TYPE_FN_FIELDLISTS (type), fn_fieldlists, j);
581 static struct type *java_object_type;
584 get_java_object_type (void)
586 if (java_object_type == NULL)
589 sym = lookup_symbol ("java.lang.Object", NULL, STRUCT_NAMESPACE,
590 (int *) 0, (struct symtab **) NULL);
592 error ("cannot find java.lang.Object");
593 java_object_type = SYMBOL_TYPE (sym);
595 return java_object_type;
599 get_java_object_header_size (void)
601 struct type *objtype = get_java_object_type ();
603 return (2 * TARGET_PTR_BIT / TARGET_CHAR_BIT);
605 return TYPE_LENGTH (objtype);
609 is_object_type (struct type *type)
611 CHECK_TYPEDEF (type);
612 if (TYPE_CODE (type) == TYPE_CODE_PTR)
614 struct type *ttype = check_typedef (TYPE_TARGET_TYPE (type));
616 if (TYPE_CODE (ttype) != TYPE_CODE_STRUCT)
618 while (TYPE_N_BASECLASSES (ttype) > 0)
619 ttype = TYPE_BASECLASS (ttype, 0);
620 name = TYPE_TAG_NAME (ttype);
621 if (name != NULL && strcmp (name, "java.lang.Object") == 0)
623 name = TYPE_NFIELDS (ttype) > 0 ? TYPE_FIELD_NAME (ttype, 0) : (char *) 0;
624 if (name != NULL && strcmp (name, "vtable") == 0)
626 if (java_object_type == NULL)
627 java_object_type = type;
635 java_primitive_type (int signature)
640 return java_byte_type;
642 return java_short_type;
644 return java_int_type;
646 return java_long_type;
648 return java_boolean_type;
650 return java_char_type;
652 return java_float_type;
654 return java_double_type;
656 return java_void_type;
658 error ("unknown signature '%c' for primitive type", (char) signature);
661 /* If name[0 .. namelen-1] is the name of a primitive Java type,
662 return that type. Otherwise, return NULL. */
665 java_primitive_type_from_name (char *name, int namelen)
670 if (namelen == 4 && memcmp (name, "byte", 4) == 0)
671 return java_byte_type;
672 if (namelen == 7 && memcmp (name, "boolean", 7) == 0)
673 return java_boolean_type;
676 if (namelen == 4 && memcmp (name, "char", 4) == 0)
677 return java_char_type;
679 if (namelen == 6 && memcmp (name, "double", 6) == 0)
680 return java_double_type;
683 if (namelen == 5 && memcmp (name, "float", 5) == 0)
684 return java_float_type;
687 if (namelen == 3 && memcmp (name, "int", 3) == 0)
688 return java_int_type;
691 if (namelen == 4 && memcmp (name, "long", 4) == 0)
692 return java_long_type;
695 if (namelen == 5 && memcmp (name, "short", 5) == 0)
696 return java_short_type;
699 if (namelen == 4 && memcmp (name, "void", 4) == 0)
700 return java_void_type;
706 /* Return the length (in bytes) of demangled name of the Java type
707 signature string SIGNATURE. */
710 java_demangled_signature_length (char *signature)
713 for (; *signature == '['; signature++)
714 array += 2; /* Two chars for "[]". */
715 switch (signature[0])
718 /* Subtract 2 for 'L' and ';'. */
719 return strlen (signature) - 2 + array;
721 return strlen (TYPE_NAME (java_primitive_type (signature[0]))) + array;
725 /* Demangle the Java type signature SIGNATURE, leaving the result in RESULT. */
728 java_demangled_signature_copy (char *result, char *signature)
733 while (*signature == '[')
738 switch (signature[0])
741 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
744 for (; *signature != ';' && *signature != '\0'; signature++)
746 if (*signature == '/')
753 ptr = TYPE_NAME (java_primitive_type (signature[0]));
755 strcpy (result, ptr);
766 /* Return the demangled name of the Java type signature string SIGNATURE,
767 as a freshly allocated copy. */
770 java_demangle_type_signature (char *signature)
772 int length = java_demangled_signature_length (signature);
773 char *result = xmalloc (length + 1);
774 java_demangled_signature_copy (result, signature);
775 result[length] = '\0';
780 java_lookup_type (char *signature)
782 switch (signature[0])
786 error ("java_lookup_type not fully implemented");
788 return java_primitive_type (signature[0]);
792 /* Return the type of TYPE followed by DIMS pairs of [ ].
793 If DIMS == 0, TYPE is returned. */
796 java_array_type (struct type *type, int dims)
798 struct type *range_type;
802 range_type = create_range_type (NULL, builtin_type_int, 0, 0);
803 /* FIXME This is bogus! Java arrays are not gdb arrays! */
804 type = create_array_type (NULL, type, range_type);
810 /* Create a Java string in the inferior from a (Utf8) literal. */
812 static struct value *
813 java_value_string (char *ptr, int len)
815 error ("not implemented - java_value_string"); /* FIXME */
818 /* Print the character C on STREAM as part of the contents of a literal
819 string whose delimiter is QUOTER. Note that that format for printing
820 characters and strings is language specific. */
823 java_emit_char (int c, struct ui_file *stream, int quoter)
829 fprintf_filtered (stream, "\\%c", c);
832 fputs_filtered ("\\b", stream);
835 fputs_filtered ("\\t", stream);
838 fputs_filtered ("\\n", stream);
841 fputs_filtered ("\\f", stream);
844 fputs_filtered ("\\r", stream);
848 fputc_filtered (c, stream);
850 fprintf_filtered (stream, "\\u%.4x", (unsigned int) c);
855 static struct value *
856 evaluate_subexp_java (struct type *expect_type, register struct expression *exp,
857 register int *pos, enum noside noside)
862 enum exp_opcode op = exp->elts[*pos].opcode;
869 if (noside == EVAL_SKIP)
872 arg1 = evaluate_subexp_java (NULL_TYPE, exp, pos, EVAL_NORMAL);
873 if (is_object_type (VALUE_TYPE (arg1)))
877 type = type_from_class (java_class_from_object (arg1));
878 arg1 = value_cast (lookup_pointer_type (type), arg1);
880 if (noside == EVAL_SKIP)
882 return value_ind (arg1);
884 case BINOP_SUBSCRIPT:
886 arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
887 arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
888 if (noside == EVAL_SKIP)
890 /* If the user attempts to subscript something that is not an
891 array or pointer type (like a plain int variable for example),
892 then report this as an error. */
895 type = check_typedef (VALUE_TYPE (arg1));
896 if (TYPE_CODE (type) == TYPE_CODE_PTR)
897 type = check_typedef (TYPE_TARGET_TYPE (type));
898 name = TYPE_NAME (type);
900 name = TYPE_TAG_NAME (type);
901 i = name == NULL ? 0 : strlen (name);
902 if (TYPE_CODE (type) == TYPE_CODE_STRUCT
903 && i > 2 && name[i - 1] == ']')
907 struct type *el_type;
910 struct value *clas = java_class_from_object (arg1);
911 struct value *temp = clas;
912 /* Get CLASS_ELEMENT_TYPE of the array type. */
913 temp = value_struct_elt (&temp, NULL, "methods",
915 VALUE_TYPE (temp) = VALUE_TYPE (clas);
916 el_type = type_from_class (temp);
917 if (TYPE_CODE (el_type) == TYPE_CODE_STRUCT)
918 el_type = lookup_pointer_type (el_type);
920 if (noside == EVAL_AVOID_SIDE_EFFECTS)
921 return value_zero (el_type, VALUE_LVAL (arg1));
922 address = value_as_address (arg1);
923 address += JAVA_OBJECT_SIZE;
924 read_memory (address, buf4, 4);
925 length = (long) extract_signed_integer (buf4, 4);
926 index = (long) value_as_long (arg2);
927 if (index >= length || index < 0)
928 error ("array index (%ld) out of bounds (length: %ld)",
930 address = (address + 4) + index * TYPE_LENGTH (el_type);
931 return value_at (el_type, address, NULL);
933 else if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
935 if (noside == EVAL_AVOID_SIDE_EFFECTS)
936 return value_zero (TYPE_TARGET_TYPE (type), VALUE_LVAL (arg1));
938 return value_subscript (arg1, arg2);
941 error ("cannot subscript something of type `%s'", name);
943 error ("cannot subscript requested type");
947 i = longest_to_int (exp->elts[pc + 1].longconst);
948 (*pos) += 3 + BYTES_TO_EXP_ELEM (i + 1);
949 if (noside == EVAL_SKIP)
951 return java_value_string (&exp->elts[pc + 2].string, i);
953 case STRUCTOP_STRUCT:
954 arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside);
955 /* Convert object field (such as TYPE.class) to reference. */
956 if (TYPE_CODE (VALUE_TYPE (arg1)) == TYPE_CODE_STRUCT)
957 arg1 = value_addr (arg1);
963 return evaluate_subexp_standard (expect_type, exp, pos, noside);
965 return value_from_longest (builtin_type_long, (LONGEST) 1);
969 java_create_fundamental_type (struct objfile *objfile, int typeid)
974 return java_void_type;
976 return java_boolean_type;
978 return java_char_type;
980 return java_float_type;
981 case FT_DBL_PREC_FLOAT:
982 return java_double_type;
985 return java_byte_type;
987 case FT_SIGNED_SHORT:
988 return java_short_type;
990 case FT_SIGNED_INTEGER:
991 return java_int_type;
994 return java_long_type;
996 return c_create_fundamental_type (objfile, typeid);
999 /* Table mapping opcodes into strings for printing operators
1000 and precedences of the operators. */
1002 const struct op_print java_op_print_tab[] =
1004 {",", BINOP_COMMA, PREC_COMMA, 0},
1005 {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
1006 {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
1007 {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
1008 {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
1009 {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
1010 {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
1011 {"==", BINOP_EQUAL, PREC_EQUAL, 0},
1012 {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
1013 {"<=", BINOP_LEQ, PREC_ORDER, 0},
1014 {">=", BINOP_GEQ, PREC_ORDER, 0},
1015 {">", BINOP_GTR, PREC_ORDER, 0},
1016 {"<", BINOP_LESS, PREC_ORDER, 0},
1017 {">>", BINOP_RSH, PREC_SHIFT, 0},
1018 {"<<", BINOP_LSH, PREC_SHIFT, 0},
1020 {">>>", BINOP_ ? ? ?, PREC_SHIFT, 0},
1022 {"+", BINOP_ADD, PREC_ADD, 0},
1023 {"-", BINOP_SUB, PREC_ADD, 0},
1024 {"*", BINOP_MUL, PREC_MUL, 0},
1025 {"/", BINOP_DIV, PREC_MUL, 0},
1026 {"%", BINOP_REM, PREC_MUL, 0},
1027 {"-", UNOP_NEG, PREC_PREFIX, 0},
1028 {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
1029 {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
1030 {"*", UNOP_IND, PREC_PREFIX, 0},
1032 {"instanceof", ? ? ?, ? ? ?, 0},
1034 {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
1035 {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
1039 const struct language_defn java_language_defn =
1041 "java", /* Language name */
1049 evaluate_subexp_java,
1050 c_printchar, /* Print a character constant */
1051 c_printstr, /* Function to print string constant */
1052 java_emit_char, /* Function to print a single character */
1053 java_create_fundamental_type, /* Create fundamental type in this language */
1054 java_print_type, /* Print a type using appropriate syntax */
1055 java_val_print, /* Print a value using appropriate syntax */
1056 java_value_print, /* Print a top-level value */
1057 NULL, /* Language specific skip_trampoline */
1058 {"", "", "", ""}, /* Binary format info */
1059 {"0%lo", "0", "o", ""}, /* Octal format info */
1060 {"%ld", "", "d", ""}, /* Decimal format info */
1061 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1062 java_op_print_tab, /* expression operators for printing */
1063 0, /* not c-style arrays */
1064 0, /* String lower bound */
1065 &builtin_type_char, /* Type of string elements */
1070 _initialize_java_language (void)
1073 java_int_type = init_type (TYPE_CODE_INT, 4, 0, "int", NULL);
1074 java_short_type = init_type (TYPE_CODE_INT, 2, 0, "short", NULL);
1075 java_long_type = init_type (TYPE_CODE_INT, 8, 0, "long", NULL);
1076 java_byte_type = init_type (TYPE_CODE_INT, 1, 0, "byte", NULL);
1077 java_boolean_type = init_type (TYPE_CODE_BOOL, 1, 0, "boolean", NULL);
1078 java_char_type = init_type (TYPE_CODE_CHAR, 2, TYPE_FLAG_UNSIGNED, "char", NULL);
1079 java_float_type = init_type (TYPE_CODE_FLT, 4, 0, "float", NULL);
1080 java_double_type = init_type (TYPE_CODE_FLT, 8, 0, "double", NULL);
1081 java_void_type = init_type (TYPE_CODE_VOID, 1, 0, "void", NULL);
1083 add_language (&java_language_defn);
1086 /* Cleanup code that should be run on every "run".
1087 We should use make_run_cleanup to have this be called.
1088 But will that mess up values in value histry? FIXME */
1090 extern void java_rerun_cleanup (void);
1092 java_rerun_cleanup (void)
1094 if (class_symtab != NULL)
1096 free_symtab (class_symtab); /* ??? */
1097 class_symtab = NULL;
1099 if (dynamics_objfile != NULL)
1101 free_objfile (dynamics_objfile);
1102 dynamics_objfile = NULL;
1105 java_object_type = NULL;