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 /* FIXME: carlton/2003-02-04: This is the main or only caller of
72 allocate_objfile with first argument NULL; as a result, this code
73 breaks every so often. Somebody should write a test case that
74 exercises GDB in various ways (e.g. something involving loading a
75 dynamic library) after this code has been called. */
77 static struct objfile *
78 get_dynamics_objfile (void)
80 if (dynamics_objfile == NULL)
82 dynamics_objfile = allocate_objfile (NULL, 0);
84 return dynamics_objfile;
88 /* symtab contains classes read from the inferior. */
90 static struct symtab *class_symtab = NULL;
92 /* Maximum number of class in class_symtab before relocation is needed. */
94 static int class_symtab_space;
96 static struct symtab *
97 get_java_class_symtab (void)
99 if (class_symtab == NULL)
101 struct objfile *objfile = get_dynamics_objfile ();
102 struct blockvector *bv;
104 class_symtab = allocate_symtab ("<java-classes>", objfile);
105 class_symtab->language = language_java;
106 bv = (struct blockvector *)
107 obstack_alloc (&objfile->symbol_obstack, sizeof (struct blockvector));
108 BLOCKVECTOR_NBLOCKS (bv) = 1;
109 BLOCKVECTOR (class_symtab) = bv;
111 /* Allocate dummy STATIC_BLOCK. */
112 bl = (struct block *)
113 obstack_alloc (&objfile->symbol_obstack, sizeof (struct block));
114 BLOCK_NSYMS (bl) = 0;
115 BLOCK_HASHTABLE (bl) = 0;
116 BLOCK_START (bl) = 0;
118 BLOCK_FUNCTION (bl) = NULL;
119 BLOCK_SUPERBLOCK (bl) = NULL;
120 BLOCK_GCC_COMPILED (bl) = 0;
121 BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK) = bl;
123 /* Allocate GLOBAL_BLOCK. This has to be relocatable. */
124 class_symtab_space = 128;
125 bl = xmmalloc (objfile->md,
126 sizeof (struct block)
127 + ((class_symtab_space - 1) * sizeof (struct symbol *)));
128 *bl = *BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
129 BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = bl;
130 class_symtab->free_ptr = (char *) bl;
136 add_class_symtab_symbol (struct symbol *sym)
138 struct symtab *symtab = get_java_class_symtab ();
139 struct blockvector *bv = BLOCKVECTOR (symtab);
140 struct block *bl = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
141 if (BLOCK_NSYMS (bl) >= class_symtab_space)
143 /* Need to re-allocate. */
144 class_symtab_space *= 2;
145 bl = xmrealloc (symtab->objfile->md, bl,
146 sizeof (struct block)
147 + ((class_symtab_space - 1) * sizeof (struct symbol *)));
148 class_symtab->free_ptr = (char *) bl;
149 BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = bl;
152 BLOCK_SYM (bl, BLOCK_NSYMS (bl)) = sym;
153 BLOCK_NSYMS (bl) = BLOCK_NSYMS (bl) + 1;
156 static struct symbol *add_class_symbol (struct type *type, CORE_ADDR addr);
158 static struct symbol *
159 add_class_symbol (struct type *type, CORE_ADDR addr)
162 sym = (struct symbol *)
163 obstack_alloc (&dynamics_objfile->symbol_obstack, sizeof (struct symbol));
164 memset (sym, 0, sizeof (struct symbol));
165 SYMBOL_LANGUAGE (sym) = language_java;
166 SYMBOL_NAME (sym) = TYPE_TAG_NAME (type);
167 SYMBOL_CLASS (sym) = LOC_TYPEDEF;
168 /* SYMBOL_VALUE (sym) = valu; */
169 SYMBOL_TYPE (sym) = type;
170 SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE;
171 SYMBOL_VALUE_ADDRESS (sym) = addr;
177 java_lookup_class (char *name)
180 sym = lookup_symbol (name, expression_context_block, STRUCT_NAMESPACE,
181 (int *) 0, (struct symtab **) NULL);
183 return SYMBOL_TYPE (sym);
186 if (called from parser)
188 call lookup_class (or similar) in inferior;
192 addr = found in inferior;
197 type = alloc_type (objfile);
198 TYPE_CODE (type) = TYPE_CODE_STRUCT;
199 INIT_CPLUS_SPECIFIC (type);
200 TYPE_TAG_NAME (type) = obsavestring (name, strlen (name), &objfile->type_obstack);
201 TYPE_FLAGS (type) |= TYPE_FLAG_STUB;
205 /* FIXME - should search inferior's symbol table. */
210 /* Return a nul-terminated string (allocated on OBSTACK) for
211 a name given by NAME (which has type Utf8Const*). */
214 get_java_utf8_name (struct obstack *obstack, struct value *name)
217 struct value *temp = name;
220 temp = value_struct_elt (&temp, NULL, "length", NULL, "structure");
221 name_length = (int) value_as_long (temp);
222 data_addr = VALUE_ADDRESS (temp) + VALUE_OFFSET (temp)
223 + TYPE_LENGTH (VALUE_TYPE (temp));
224 chrs = obstack_alloc (obstack, name_length + 1);
225 chrs[name_length] = '\0';
226 read_memory (data_addr, chrs, name_length);
231 java_class_from_object (struct value *obj_val)
233 /* This is all rather inefficient, since the offsets of vtable and
234 class are fixed. FIXME */
235 struct value *vtable_val;
237 if (TYPE_CODE (VALUE_TYPE (obj_val)) == TYPE_CODE_PTR
238 && TYPE_LENGTH (TYPE_TARGET_TYPE (VALUE_TYPE (obj_val))) == 0)
239 obj_val = value_at (get_java_object_type (),
240 value_as_address (obj_val), NULL);
242 vtable_val = value_struct_elt (&obj_val, NULL, "vtable", NULL, "structure");
243 return value_struct_elt (&vtable_val, NULL, "class", NULL, "structure");
246 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
248 java_class_is_primitive (struct value *clas)
250 struct value *vtable = value_struct_elt (&clas, NULL, "vtable", NULL, "struct");
251 CORE_ADDR i = value_as_address (vtable);
252 return (int) (i & 0x7fffffff) == (int) 0x7fffffff;
255 /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
258 type_from_class (struct value *clas)
263 struct objfile *objfile;
264 struct value *utf8_name;
271 type = check_typedef (VALUE_TYPE (clas));
272 if (TYPE_CODE (type) == TYPE_CODE_PTR)
274 if (value_logical_not (clas))
276 clas = value_ind (clas);
278 addr = VALUE_ADDRESS (clas) + VALUE_OFFSET (clas);
281 get_java_class_symtab ();
282 bl = BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab), GLOBAL_BLOCK);
283 for (i = BLOCK_NSYMS (bl); --i >= 0;)
285 struct symbol *sym = BLOCK_SYM (bl, i);
286 if (SYMBOL_VALUE_ADDRESS (sym) == addr)
287 return SYMBOL_TYPE (sym);
291 objfile = get_dynamics_objfile ();
292 if (java_class_is_primitive (clas))
296 sig = value_struct_elt (&temp, NULL, "method_count", NULL, "structure");
297 return java_primitive_type (value_as_long (sig));
300 /* Get Class name. */
301 /* if clasloader non-null, prepend loader address. FIXME */
303 utf8_name = value_struct_elt (&temp, NULL, "name", NULL, "structure");
304 name = get_java_utf8_name (&objfile->type_obstack, utf8_name);
305 for (nptr = name; *nptr != 0; nptr++)
311 type = java_lookup_class (name);
315 type = alloc_type (objfile);
316 TYPE_CODE (type) = TYPE_CODE_STRUCT;
317 INIT_CPLUS_SPECIFIC (type);
321 char *signature = name;
322 int namelen = java_demangled_signature_length (signature);
323 if (namelen > strlen (name))
324 name = obstack_alloc (&objfile->type_obstack, namelen + 1);
325 java_demangled_signature_copy (name, signature);
326 name[namelen] = '\0';
329 /* Set array element type. */
330 temp = value_struct_elt (&temp, NULL, "methods", NULL, "structure");
331 VALUE_TYPE (temp) = lookup_pointer_type (VALUE_TYPE (clas));
332 TYPE_TARGET_TYPE (type) = type_from_class (temp);
335 ALLOCATE_CPLUS_STRUCT_TYPE (type);
336 TYPE_TAG_NAME (type) = name;
338 add_class_symtab_symbol (add_class_symbol (type, addr));
339 return java_link_class_type (type, clas);
342 /* Fill in class TYPE with data from the CLAS value. */
345 java_link_class_type (struct type *type, struct value *clas)
348 char *unqualified_name;
349 char *name = TYPE_TAG_NAME (type);
350 int ninterfaces, nfields, nmethods;
351 int type_is_object = 0;
352 struct fn_field *fn_fields;
353 struct fn_fieldlist *fn_fieldlists;
354 struct value *fields;
355 struct value *methods;
356 struct value *method = NULL;
357 struct value *field = NULL;
359 struct objfile *objfile = get_dynamics_objfile ();
362 unqualified_name = strrchr (name, '.');
363 if (unqualified_name == NULL)
364 unqualified_name = name;
367 temp = value_struct_elt (&temp, NULL, "superclass", NULL, "structure");
368 if (name != NULL && strcmp (name, "java.lang.Object") == 0)
370 tsuper = get_java_object_type ();
371 if (tsuper && TYPE_CODE (tsuper) == TYPE_CODE_PTR)
372 tsuper = TYPE_TARGET_TYPE (tsuper);
376 tsuper = type_from_class (temp);
382 ninterfaces = value_as_long (value_struct_elt (&temp, NULL, "interface_len", NULL, "structure"));
384 TYPE_N_BASECLASSES (type) = (tsuper == NULL ? 0 : 1) + ninterfaces;
386 nfields = value_as_long (value_struct_elt (&temp, NULL, "field_count", NULL, "structure"));
387 nfields += TYPE_N_BASECLASSES (type);
388 nfields++; /* Add one for dummy "class" field. */
389 TYPE_NFIELDS (type) = nfields;
390 TYPE_FIELDS (type) = (struct field *)
391 TYPE_ALLOC (type, sizeof (struct field) * nfields);
393 memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields);
395 TYPE_FIELD_PRIVATE_BITS (type) =
396 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
397 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields);
399 TYPE_FIELD_PROTECTED_BITS (type) =
400 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
401 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields);
403 TYPE_FIELD_IGNORE_BITS (type) =
404 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
405 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields);
407 TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *)
408 TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type)));
409 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type));
413 TYPE_BASECLASS (type, 0) = tsuper;
415 SET_TYPE_FIELD_PRIVATE (type, 0);
419 if (i > 2 && name[i - 1] == ']' && tsuper != NULL)
422 TYPE_LENGTH (type) = TYPE_LENGTH (tsuper) + 4; /* size with "length" */
427 temp = value_struct_elt (&temp, NULL, "size_in_bytes", NULL, "structure");
428 TYPE_LENGTH (type) = value_as_long (temp);
432 nfields--; /* First set up dummy "class" field. */
433 SET_FIELD_PHYSADDR (TYPE_FIELD (type, nfields),
434 VALUE_ADDRESS (clas) + VALUE_OFFSET (clas));
435 TYPE_FIELD_NAME (type, nfields) = "class";
436 TYPE_FIELD_TYPE (type, nfields) = VALUE_TYPE (clas);
437 SET_TYPE_FIELD_PRIVATE (type, nfields);
439 for (i = TYPE_N_BASECLASSES (type); i < nfields; i++)
446 fields = value_struct_elt (&temp, NULL, "fields", NULL, "structure");
447 field = value_ind (fields);
450 { /* Re-use field value for next field. */
451 VALUE_ADDRESS (field) += TYPE_LENGTH (VALUE_TYPE (field));
452 VALUE_LAZY (field) = 1;
455 temp = value_struct_elt (&temp, NULL, "name", NULL, "structure");
456 TYPE_FIELD_NAME (type, i) =
457 get_java_utf8_name (&objfile->type_obstack, temp);
459 accflags = value_as_long (value_struct_elt (&temp, NULL, "accflags",
462 temp = value_struct_elt (&temp, NULL, "info", NULL, "structure");
463 boffset = value_as_long (value_struct_elt (&temp, NULL, "boffset",
465 if (accflags & 0x0001) /* public access */
469 if (accflags & 0x0002) /* private access */
471 SET_TYPE_FIELD_PRIVATE (type, i);
473 if (accflags & 0x0004) /* protected access */
475 SET_TYPE_FIELD_PROTECTED (type, i);
477 if (accflags & 0x0008) /* ACC_STATIC */
478 SET_FIELD_PHYSADDR (TYPE_FIELD (type, i), boffset);
480 TYPE_FIELD_BITPOS (type, i) = 8 * boffset;
481 if (accflags & 0x8000) /* FIELD_UNRESOLVED_FLAG */
483 TYPE_FIELD_TYPE (type, i) = get_java_object_type (); /* FIXME */
489 temp = value_struct_elt (&temp, NULL, "type", NULL, "structure");
490 ftype = type_from_class (temp);
491 if (TYPE_CODE (ftype) == TYPE_CODE_STRUCT)
492 ftype = lookup_pointer_type (ftype);
493 TYPE_FIELD_TYPE (type, i) = ftype;
498 nmethods = value_as_long (value_struct_elt (&temp, NULL, "method_count",
500 TYPE_NFN_FIELDS_TOTAL (type) = nmethods;
501 j = nmethods * sizeof (struct fn_field);
502 fn_fields = (struct fn_field *)
503 obstack_alloc (&dynamics_objfile->symbol_obstack, j);
504 memset (fn_fields, 0, j);
505 fn_fieldlists = (struct fn_fieldlist *)
506 alloca (nmethods * sizeof (struct fn_fieldlist));
509 for (i = 0; i < nmethods; i++)
516 methods = value_struct_elt (&temp, NULL, "methods", NULL, "structure");
517 method = value_ind (methods);
520 { /* Re-use method value for next method. */
521 VALUE_ADDRESS (method) += TYPE_LENGTH (VALUE_TYPE (method));
522 VALUE_LAZY (method) = 1;
525 /* Get method name. */
527 temp = value_struct_elt (&temp, NULL, "name", NULL, "structure");
528 mname = get_java_utf8_name (&objfile->type_obstack, temp);
529 if (strcmp (mname, "<init>") == 0)
530 mname = unqualified_name;
532 /* Check for an existing method with the same name.
533 * This makes building the fn_fieldslists an O(nmethods**2)
534 * operation. That could be using hashing, but I doubt it
535 * is worth it. Note that we do maintain the order of methods
536 * in the inferior's Method table (as long as that is grouped
537 * by method name), which I think is desirable. --PB */
538 for (k = 0, j = TYPE_NFN_FIELDS (type);;)
541 { /* No match - new method name. */
542 j = TYPE_NFN_FIELDS (type)++;
543 fn_fieldlists[j].name = mname;
544 fn_fieldlists[j].length = 1;
545 fn_fieldlists[j].fn_fields = &fn_fields[i];
549 if (strcmp (mname, fn_fieldlists[j].name) == 0)
550 { /* Found an existing method with the same name. */
552 if (mname != unqualified_name)
553 obstack_free (&objfile->type_obstack, mname);
554 mname = fn_fieldlists[j].name;
555 fn_fieldlists[j].length++;
556 k = i - k; /* Index of new slot. */
557 /* Shift intervening fn_fields (between k and i) down. */
558 for (l = i; l > k; l--)
559 fn_fields[l] = fn_fields[l - 1];
560 for (l = TYPE_NFN_FIELDS (type); --l > j;)
561 fn_fieldlists[l].fn_fields++;
564 k += fn_fieldlists[j].length;
566 fn_fields[k].physname = "";
567 fn_fields[k].is_stub = 1;
568 fn_fields[k].type = make_function_type (java_void_type, NULL); /* FIXME */
569 TYPE_CODE (fn_fields[k].type) = TYPE_CODE_METHOD;
572 j = TYPE_NFN_FIELDS (type) * sizeof (struct fn_fieldlist);
573 TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *)
574 obstack_alloc (&dynamics_objfile->symbol_obstack, j);
575 memcpy (TYPE_FN_FIELDLISTS (type), fn_fieldlists, j);
580 static struct type *java_object_type;
583 get_java_object_type (void)
585 if (java_object_type == NULL)
588 sym = lookup_symbol ("java.lang.Object", NULL, STRUCT_NAMESPACE,
589 (int *) 0, (struct symtab **) NULL);
591 error ("cannot find java.lang.Object");
592 java_object_type = SYMBOL_TYPE (sym);
594 return java_object_type;
598 get_java_object_header_size (void)
600 struct type *objtype = get_java_object_type ();
602 return (2 * TARGET_PTR_BIT / TARGET_CHAR_BIT);
604 return TYPE_LENGTH (objtype);
608 is_object_type (struct type *type)
610 CHECK_TYPEDEF (type);
611 if (TYPE_CODE (type) == TYPE_CODE_PTR)
613 struct type *ttype = check_typedef (TYPE_TARGET_TYPE (type));
615 if (TYPE_CODE (ttype) != TYPE_CODE_STRUCT)
617 while (TYPE_N_BASECLASSES (ttype) > 0)
618 ttype = TYPE_BASECLASS (ttype, 0);
619 name = TYPE_TAG_NAME (ttype);
620 if (name != NULL && strcmp (name, "java.lang.Object") == 0)
622 name = TYPE_NFIELDS (ttype) > 0 ? TYPE_FIELD_NAME (ttype, 0) : (char *) 0;
623 if (name != NULL && strcmp (name, "vtable") == 0)
625 if (java_object_type == NULL)
626 java_object_type = type;
634 java_primitive_type (int signature)
639 return java_byte_type;
641 return java_short_type;
643 return java_int_type;
645 return java_long_type;
647 return java_boolean_type;
649 return java_char_type;
651 return java_float_type;
653 return java_double_type;
655 return java_void_type;
657 error ("unknown signature '%c' for primitive type", (char) signature);
660 /* If name[0 .. namelen-1] is the name of a primitive Java type,
661 return that type. Otherwise, return NULL. */
664 java_primitive_type_from_name (char *name, int namelen)
669 if (namelen == 4 && memcmp (name, "byte", 4) == 0)
670 return java_byte_type;
671 if (namelen == 7 && memcmp (name, "boolean", 7) == 0)
672 return java_boolean_type;
675 if (namelen == 4 && memcmp (name, "char", 4) == 0)
676 return java_char_type;
678 if (namelen == 6 && memcmp (name, "double", 6) == 0)
679 return java_double_type;
682 if (namelen == 5 && memcmp (name, "float", 5) == 0)
683 return java_float_type;
686 if (namelen == 3 && memcmp (name, "int", 3) == 0)
687 return java_int_type;
690 if (namelen == 4 && memcmp (name, "long", 4) == 0)
691 return java_long_type;
694 if (namelen == 5 && memcmp (name, "short", 5) == 0)
695 return java_short_type;
698 if (namelen == 4 && memcmp (name, "void", 4) == 0)
699 return java_void_type;
705 /* Return the length (in bytes) of demangled name of the Java type
706 signature string SIGNATURE. */
709 java_demangled_signature_length (char *signature)
712 for (; *signature == '['; signature++)
713 array += 2; /* Two chars for "[]". */
714 switch (signature[0])
717 /* Subtract 2 for 'L' and ';'. */
718 return strlen (signature) - 2 + array;
720 return strlen (TYPE_NAME (java_primitive_type (signature[0]))) + array;
724 /* Demangle the Java type signature SIGNATURE, leaving the result in RESULT. */
727 java_demangled_signature_copy (char *result, char *signature)
732 while (*signature == '[')
737 switch (signature[0])
740 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
743 for (; *signature != ';' && *signature != '\0'; signature++)
745 if (*signature == '/')
752 ptr = TYPE_NAME (java_primitive_type (signature[0]));
754 strcpy (result, ptr);
765 /* Return the demangled name of the Java type signature string SIGNATURE,
766 as a freshly allocated copy. */
769 java_demangle_type_signature (char *signature)
771 int length = java_demangled_signature_length (signature);
772 char *result = xmalloc (length + 1);
773 java_demangled_signature_copy (result, signature);
774 result[length] = '\0';
779 java_lookup_type (char *signature)
781 switch (signature[0])
785 error ("java_lookup_type not fully implemented");
787 return java_primitive_type (signature[0]);
791 /* Return the type of TYPE followed by DIMS pairs of [ ].
792 If DIMS == 0, TYPE is returned. */
795 java_array_type (struct type *type, int dims)
797 struct type *range_type;
801 range_type = create_range_type (NULL, builtin_type_int, 0, 0);
802 /* FIXME This is bogus! Java arrays are not gdb arrays! */
803 type = create_array_type (NULL, type, range_type);
809 /* Create a Java string in the inferior from a (Utf8) literal. */
811 static struct value *
812 java_value_string (char *ptr, int len)
814 error ("not implemented - java_value_string"); /* FIXME */
817 /* Print the character C on STREAM as part of the contents of a literal
818 string whose delimiter is QUOTER. Note that that format for printing
819 characters and strings is language specific. */
822 java_emit_char (int c, struct ui_file *stream, int quoter)
828 fprintf_filtered (stream, "\\%c", c);
831 fputs_filtered ("\\b", stream);
834 fputs_filtered ("\\t", stream);
837 fputs_filtered ("\\n", stream);
840 fputs_filtered ("\\f", stream);
843 fputs_filtered ("\\r", stream);
847 fputc_filtered (c, stream);
849 fprintf_filtered (stream, "\\u%.4x", (unsigned int) c);
854 static struct value *
855 evaluate_subexp_java (struct type *expect_type, register struct expression *exp,
856 register int *pos, enum noside noside)
861 enum exp_opcode op = exp->elts[*pos].opcode;
868 if (noside == EVAL_SKIP)
871 arg1 = evaluate_subexp_java (NULL_TYPE, exp, pos, EVAL_NORMAL);
872 if (is_object_type (VALUE_TYPE (arg1)))
876 type = type_from_class (java_class_from_object (arg1));
877 arg1 = value_cast (lookup_pointer_type (type), arg1);
879 if (noside == EVAL_SKIP)
881 return value_ind (arg1);
883 case BINOP_SUBSCRIPT:
885 arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
886 arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
887 if (noside == EVAL_SKIP)
889 /* If the user attempts to subscript something that is not an
890 array or pointer type (like a plain int variable for example),
891 then report this as an error. */
894 type = check_typedef (VALUE_TYPE (arg1));
895 if (TYPE_CODE (type) == TYPE_CODE_PTR)
896 type = check_typedef (TYPE_TARGET_TYPE (type));
897 name = TYPE_NAME (type);
899 name = TYPE_TAG_NAME (type);
900 i = name == NULL ? 0 : strlen (name);
901 if (TYPE_CODE (type) == TYPE_CODE_STRUCT
902 && i > 2 && name[i - 1] == ']')
906 struct type *el_type;
909 struct value *clas = java_class_from_object (arg1);
910 struct value *temp = clas;
911 /* Get CLASS_ELEMENT_TYPE of the array type. */
912 temp = value_struct_elt (&temp, NULL, "methods",
914 VALUE_TYPE (temp) = VALUE_TYPE (clas);
915 el_type = type_from_class (temp);
916 if (TYPE_CODE (el_type) == TYPE_CODE_STRUCT)
917 el_type = lookup_pointer_type (el_type);
919 if (noside == EVAL_AVOID_SIDE_EFFECTS)
920 return value_zero (el_type, VALUE_LVAL (arg1));
921 address = value_as_address (arg1);
922 address += JAVA_OBJECT_SIZE;
923 read_memory (address, buf4, 4);
924 length = (long) extract_signed_integer (buf4, 4);
925 index = (long) value_as_long (arg2);
926 if (index >= length || index < 0)
927 error ("array index (%ld) out of bounds (length: %ld)",
929 address = (address + 4) + index * TYPE_LENGTH (el_type);
930 return value_at (el_type, address, NULL);
932 else if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
934 if (noside == EVAL_AVOID_SIDE_EFFECTS)
935 return value_zero (TYPE_TARGET_TYPE (type), VALUE_LVAL (arg1));
937 return value_subscript (arg1, arg2);
940 error ("cannot subscript something of type `%s'", name);
942 error ("cannot subscript requested type");
946 i = longest_to_int (exp->elts[pc + 1].longconst);
947 (*pos) += 3 + BYTES_TO_EXP_ELEM (i + 1);
948 if (noside == EVAL_SKIP)
950 return java_value_string (&exp->elts[pc + 2].string, i);
952 case STRUCTOP_STRUCT:
953 arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside);
954 /* Convert object field (such as TYPE.class) to reference. */
955 if (TYPE_CODE (VALUE_TYPE (arg1)) == TYPE_CODE_STRUCT)
956 arg1 = value_addr (arg1);
962 return evaluate_subexp_standard (expect_type, exp, pos, noside);
964 return value_from_longest (builtin_type_long, (LONGEST) 1);
968 java_create_fundamental_type (struct objfile *objfile, int typeid)
973 return java_void_type;
975 return java_boolean_type;
977 return java_char_type;
979 return java_float_type;
980 case FT_DBL_PREC_FLOAT:
981 return java_double_type;
984 return java_byte_type;
986 case FT_SIGNED_SHORT:
987 return java_short_type;
989 case FT_SIGNED_INTEGER:
990 return java_int_type;
993 return java_long_type;
995 return c_create_fundamental_type (objfile, typeid);
998 /* Table mapping opcodes into strings for printing operators
999 and precedences of the operators. */
1001 const struct op_print java_op_print_tab[] =
1003 {",", BINOP_COMMA, PREC_COMMA, 0},
1004 {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
1005 {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
1006 {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
1007 {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
1008 {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
1009 {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
1010 {"==", BINOP_EQUAL, PREC_EQUAL, 0},
1011 {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
1012 {"<=", BINOP_LEQ, PREC_ORDER, 0},
1013 {">=", BINOP_GEQ, PREC_ORDER, 0},
1014 {">", BINOP_GTR, PREC_ORDER, 0},
1015 {"<", BINOP_LESS, PREC_ORDER, 0},
1016 {">>", BINOP_RSH, PREC_SHIFT, 0},
1017 {"<<", BINOP_LSH, PREC_SHIFT, 0},
1019 {">>>", BINOP_ ? ? ?, PREC_SHIFT, 0},
1021 {"+", BINOP_ADD, PREC_ADD, 0},
1022 {"-", BINOP_SUB, PREC_ADD, 0},
1023 {"*", BINOP_MUL, PREC_MUL, 0},
1024 {"/", BINOP_DIV, PREC_MUL, 0},
1025 {"%", BINOP_REM, PREC_MUL, 0},
1026 {"-", UNOP_NEG, PREC_PREFIX, 0},
1027 {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
1028 {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
1029 {"*", UNOP_IND, PREC_PREFIX, 0},
1031 {"instanceof", ? ? ?, ? ? ?, 0},
1033 {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
1034 {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
1038 const struct language_defn java_language_defn =
1040 "java", /* Language name */
1048 evaluate_subexp_java,
1049 c_printchar, /* Print a character constant */
1050 c_printstr, /* Function to print string constant */
1051 java_emit_char, /* Function to print a single character */
1052 java_create_fundamental_type, /* Create fundamental type in this language */
1053 java_print_type, /* Print a type using appropriate syntax */
1054 java_val_print, /* Print a value using appropriate syntax */
1055 java_value_print, /* Print a top-level value */
1056 {"", "", "", ""}, /* Binary format info */
1057 {"0%lo", "0", "o", ""}, /* Octal format info */
1058 {"%ld", "", "d", ""}, /* Decimal format info */
1059 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1060 java_op_print_tab, /* expression operators for printing */
1061 0, /* not c-style arrays */
1062 0, /* String lower bound */
1063 &builtin_type_char, /* Type of string elements */
1068 _initialize_java_language (void)
1071 java_int_type = init_type (TYPE_CODE_INT, 4, 0, "int", NULL);
1072 java_short_type = init_type (TYPE_CODE_INT, 2, 0, "short", NULL);
1073 java_long_type = init_type (TYPE_CODE_INT, 8, 0, "long", NULL);
1074 java_byte_type = init_type (TYPE_CODE_INT, 1, 0, "byte", NULL);
1075 java_boolean_type = init_type (TYPE_CODE_BOOL, 1, 0, "boolean", NULL);
1076 java_char_type = init_type (TYPE_CODE_CHAR, 2, TYPE_FLAG_UNSIGNED, "char", NULL);
1077 java_float_type = init_type (TYPE_CODE_FLT, 4, 0, "float", NULL);
1078 java_double_type = init_type (TYPE_CODE_FLT, 8, 0, "double", NULL);
1079 java_void_type = init_type (TYPE_CODE_VOID, 1, 0, "void", NULL);
1081 add_language (&java_language_defn);
1084 /* Cleanup code that should be run on every "run".
1085 We should use make_run_cleanup to have this be called.
1086 But will that mess up values in value histry? FIXME */
1088 extern void java_rerun_cleanup (void);
1090 java_rerun_cleanup (void)
1092 if (class_symtab != NULL)
1094 free_symtab (class_symtab); /* ??? */
1095 class_symtab = NULL;
1097 if (dynamics_objfile != NULL)
1099 free_objfile (dynamics_objfile);
1100 dynamics_objfile = NULL;
1103 java_object_type = NULL;