1 /* Java language support routines for GDB, the GNU debugger.
2 Copyright 1997 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, Boston, MA 02111-1307, USA. */
23 #include "expression.h"
24 #include "parser-defs.h"
30 #include "gdb_string.h"
36 struct type
*java_int_type
;
37 struct type
*java_byte_type
;
38 struct type
*java_short_type
;
39 struct type
*java_long_type
;
40 struct type
*java_boolean_type
;
41 struct type
*java_char_type
;
42 struct type
*java_float_type
;
43 struct type
*java_double_type
;
44 struct type
*java_void_type
;
46 struct type
*java_object_type
;
48 /* This objfile contains symtabs that have been dynamically created
49 to record dynamically loaded Java classes and dynamically
50 compiled java methods. */
51 struct objfile
*dynamics_objfile
= NULL
;
53 struct type
*java_link_class_type
PARAMS((struct type
*, value_ptr
));
56 get_dynamics_objfile ()
58 if (dynamics_objfile
== NULL
)
60 dynamics_objfile
= allocate_objfile (NULL
, 0);
62 return dynamics_objfile
;
66 /* symtab contains classes read from the inferior. */
68 static struct symtab
*class_symtab
= NULL
;
70 /* Maximum number of class in class_symtab before relocation is needed. */
72 static int class_symtab_space
;
75 get_java_class_symtab ()
77 if (class_symtab
== NULL
)
79 struct objfile
*objfile
= get_dynamics_objfile();
80 struct blockvector
*bv
;
82 class_symtab
= allocate_symtab ("<java-classes>", objfile
);
83 class_symtab
->language
= language_java
;
84 bv
= (struct blockvector
*)
85 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct blockvector
));
86 BLOCKVECTOR_NBLOCKS (bv
) = 1;
87 BLOCKVECTOR (class_symtab
) = bv
;
89 /* Allocate dummy STATIC_BLOCK. */
91 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct block
));
95 BLOCK_FUNCTION (bl
) = NULL
;
96 BLOCK_SUPERBLOCK (bl
) = NULL
;
97 BLOCK_GCC_COMPILED (bl
) = 0;
98 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = bl
;
100 /* Allocate GLOBAL_BLOCK. This has to be relocatable. */
101 class_symtab_space
= 128;
102 bl
= (struct block
*)
103 mmalloc (objfile
->md
,
104 sizeof (struct block
)
105 + ((class_symtab_space
- 1) * sizeof (struct symbol
*)));
106 *bl
= *BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
107 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
108 class_symtab
->free_ptr
= (char *) bl
;
114 add_class_symtab_symbol (sym
)
117 struct symtab
*symtab
= get_java_class_symtab ();
118 struct blockvector
*bv
= BLOCKVECTOR (symtab
);
119 struct block
*bl
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
120 if (BLOCK_NSYMS (bl
) >= class_symtab_space
)
122 /* Need to re-allocate. */
123 class_symtab_space
*= 2;
124 bl
= (struct block
*)
125 mrealloc (symtab
->objfile
->md
, bl
,
126 sizeof (struct block
)
127 + ((class_symtab_space
- 1) * sizeof (struct symbol
*)));
128 class_symtab
->free_ptr
= (char *) bl
;
129 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
132 BLOCK_SYM (bl
, BLOCK_NSYMS (bl
)) = sym
;
133 BLOCK_NSYMS (bl
) = BLOCK_NSYMS (bl
) + 1;
137 add_class_symbol (type
, addr
)
142 sym
= (struct symbol
*)
143 obstack_alloc (&dynamics_objfile
->symbol_obstack
, sizeof (struct symbol
));
144 memset (sym
, 0, sizeof (struct symbol
));
145 SYMBOL_LANGUAGE (sym
) = language_java
;
146 SYMBOL_NAME (sym
) = TYPE_TAG_NAME (type
);
147 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
148 /* SYMBOL_VALUE (sym) = valu;*/
149 SYMBOL_TYPE (sym
) = type
;
150 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
151 SYMBOL_VALUE_ADDRESS (sym
) = addr
;
157 java_lookup_class (name
)
161 sym
= lookup_symbol (name
, expression_context_block
, STRUCT_NAMESPACE
,
162 (int *) 0, (struct symtab
**) NULL
);
164 return SYMBOL_TYPE (sym
);
167 if (called from parser
)
169 call
lookup_class (or similar
) in inferior
;
172 addr
= found in inferior
;
177 type
= alloc_type (objfile
);
178 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
179 INIT_CPLUS_SPECIFIC (type
);
180 TYPE_TAG_NAME (type
) = obsavestring (name
, strlen(name
), &objfile
->type_obstack
);
181 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
185 /* FIXME - should search inferior's symbol table. */
190 /* Return a nul-terminated string (allocated on OBSTACK) for
191 a name given by NAME (which has type Utf8Const*). */
194 get_java_utf8_name (obstack
, name
)
195 struct obstack
*obstack
;
199 value_ptr temp
= name
;
202 temp
= value_struct_elt (&temp
, NULL
, "length", NULL
, "structure");
203 name_length
= (int) value_as_long (temp
);
204 data_addr
= VALUE_ADDRESS (temp
) + VALUE_OFFSET (temp
)
205 + TYPE_LENGTH (VALUE_TYPE (temp
));
206 chrs
= obstack_alloc (obstack
, name_length
+1);
207 chrs
[name_length
] = '\0';
208 read_memory_section (data_addr
, chrs
, name_length
, NULL
);
213 java_class_from_object (obj_val
)
216 /* This is all rather inefficient, since the offsets of dtable and
217 class are fixed. FIXME */
218 value_ptr dtable_val
;
220 if (TYPE_CODE (VALUE_TYPE (obj_val
)) == TYPE_CODE_PTR
221 && TYPE_LENGTH (TYPE_TARGET_TYPE (VALUE_TYPE (obj_val
))) == 0)
224 sym
= lookup_symbol ("Hjava_lang_Object", NULL
, STRUCT_NAMESPACE
,
225 (int *) 0, (struct symtab
**) NULL
);
227 obj_val
= value_at (VALUE_TYPE (sym
),
228 value_as_pointer (obj_val
), NULL
);
231 dtable_val
= value_struct_elt (&obj_val
, NULL
, "dtable", NULL
, "structure");
232 return value_struct_elt (&dtable_val
, NULL
, "class", NULL
, "structure");
235 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
237 java_class_is_primitive (clas
)
240 value_ptr dtable
= value_struct_elt (&clas
, NULL
, "dtable", NULL
, "struct");
241 CORE_ADDR i
= value_as_pointer (dtable
);
242 return (int) (i
& 0x7fffffff) == (int) 0x7fffffff;
245 /* Read a Kaffe Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
248 type_from_class (clas
)
254 struct objfile
*objfile
;
262 type
= check_typedef (VALUE_TYPE (clas
));
263 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
265 if (value_logical_not (clas
))
267 clas
= value_ind (clas
);
269 addr
= VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
);
272 get_java_class_symtab ();
273 bl
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab
), GLOBAL_BLOCK
);
274 for (i
= BLOCK_NSYMS (bl
); --i
>= 0; )
276 struct symbol
*sym
= BLOCK_SYM (bl
, i
);
277 if (SYMBOL_VALUE_ADDRESS (sym
) == addr
)
278 return SYMBOL_TYPE (sym
);
282 objfile
= get_dynamics_objfile();
283 if (java_class_is_primitive (clas
))
287 sig
= value_struct_elt (&temp
, NULL
, "msize", NULL
, "structure");
288 return java_primitive_type (value_as_long (sig
));
291 /* Get Class name. */
292 /* if clasloader non-null, prepend loader address. FIXME */
294 utf8_name
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
295 name
= get_java_utf8_name (&objfile
->type_obstack
, utf8_name
);
296 for (nptr
= name
; *nptr
!= 0; nptr
++)
302 type
= java_lookup_class (name
);
306 type
= alloc_type (objfile
);
307 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
308 INIT_CPLUS_SPECIFIC (type
);
314 /* Set array element type. */
315 temp
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
316 VALUE_TYPE (temp
) = lookup_pointer_type (VALUE_TYPE (clas
));
317 TYPE_TARGET_TYPE (type
) = type_from_class (temp
);
320 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
321 TYPE_TAG_NAME (type
) = name
;
323 add_class_symtab_symbol (add_class_symbol (type
, addr
));
324 return java_link_class_type (type
, clas
);
327 /* Fill in class TYPE with data from the CLAS value. */
330 java_link_class_type (type
, clas
)
335 char *unqualified_name
;
336 char *name
= TYPE_TAG_NAME (type
);
337 int ninterfaces
, nfields
, nmethods
;
338 int type_is_object
= 0;
339 struct fn_field
*fn_fields
;
340 struct fn_fieldlist
*fn_fieldlists
;
341 value_ptr fields
, field
, method
, methods
;
343 struct objfile
*objfile
= get_dynamics_objfile();
346 unqualified_name
= strrchr (name
, '.');
347 if (unqualified_name
== NULL
)
348 unqualified_name
= name
;
351 temp
= value_struct_elt (&temp
, NULL
, "superclass", NULL
, "structure");
352 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
354 tsuper
= get_java_object_type ();
355 if (tsuper
&& TYPE_CODE (tsuper
) == TYPE_CODE_PTR
)
356 tsuper
= TYPE_TARGET_TYPE (tsuper
);
360 tsuper
= type_from_class (temp
);
366 ninterfaces
= value_as_long (value_struct_elt (&temp
, NULL
, "interface_len", NULL
, "structure"));
368 TYPE_N_BASECLASSES (type
) = (tsuper
== NULL
? 0 : 1) + ninterfaces
;
370 nfields
= value_as_long (value_struct_elt (&temp
, NULL
, "nfields", NULL
, "structure"));
371 nfields
+= TYPE_N_BASECLASSES (type
);
372 nfields
++; /* Add one for dummy "class" field. */
373 TYPE_NFIELDS (type
) = nfields
;
374 TYPE_FIELDS (type
) = (struct field
*)
375 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
377 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
379 TYPE_FIELD_PRIVATE_BITS (type
) =
380 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
381 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
383 TYPE_FIELD_PROTECTED_BITS (type
) =
384 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
385 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
387 TYPE_FIELD_IGNORE_BITS (type
) =
388 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
389 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
391 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
392 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
393 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
397 TYPE_BASECLASS (type
, 0) = tsuper
;
399 SET_TYPE_FIELD_PRIVATE (type
, 0);
403 if (name
[0] == '[' && tsuper
!= NULL
)
405 TYPE_LENGTH (type
) = TYPE_LENGTH (tsuper
) + 4; /* size with "length" */
410 temp
= value_struct_elt (&temp
, NULL
, "bfsize", NULL
, "structure");
411 TYPE_LENGTH (type
) = value_as_long (temp
);
415 nfields
--; /* First set up dummy "class" field. */
416 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, nfields
),
417 VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
));
418 TYPE_FIELD_NAME (type
, nfields
) = "class";
419 TYPE_FIELD_TYPE (type
, nfields
) = VALUE_TYPE (clas
);
420 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
422 for (i
= TYPE_N_BASECLASSES (type
); i
< nfields
; i
++)
429 fields
= value_struct_elt (&temp
, NULL
, "fields", NULL
, "structure");
430 field
= value_ind (fields
);
433 { /* Re-use field value for next field. */
434 VALUE_ADDRESS (field
) += TYPE_LENGTH (VALUE_TYPE (field
));
435 VALUE_LAZY (field
) = 1;
438 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
439 TYPE_FIELD_NAME (type
, i
) =
440 get_java_utf8_name (&objfile
->type_obstack
, temp
);
442 accflags
= value_as_long (value_struct_elt (&temp
, NULL
, "accflags",
445 temp
= value_struct_elt (&temp
, NULL
, "info", NULL
, "structure");
446 boffset
= value_as_long (value_struct_elt (&temp
, NULL
, "boffset",
448 if (accflags
& 0x0001) /* public access */
452 if (accflags
& 0x0002) /* private access */
454 SET_TYPE_FIELD_PRIVATE (type
, i
);
456 if (accflags
& 0x0004) /* protected access */
458 SET_TYPE_FIELD_PROTECTED (type
, i
);
460 if (accflags
& 0x0008) /* ACC_STATIC */
461 SET_FIELD_PHYSADDR(TYPE_FIELD(type
, i
), boffset
);
463 TYPE_FIELD_BITPOS (type
, i
) = 8 * boffset
;
464 if (accflags
& 0x8000) /* FIELD_UNRESOLVED_FLAG */
466 TYPE_FIELD_TYPE (type
, i
) = get_java_object_type (); /* FIXME */
472 temp
= value_struct_elt (&temp
, NULL
, "type", NULL
, "structure");
473 ftype
= type_from_class (temp
);
474 if (TYPE_CODE (ftype
) == TYPE_CODE_STRUCT
)
475 ftype
= lookup_pointer_type (ftype
);
476 TYPE_FIELD_TYPE (type
, i
) = ftype
;
481 nmethods
= value_as_long (value_struct_elt (&temp
, NULL
, "nmethods",
483 TYPE_NFN_FIELDS_TOTAL (type
) = nmethods
;
484 j
= nmethods
* sizeof (struct fn_field
);
485 fn_fields
= (struct fn_field
*)
486 obstack_alloc (&dynamics_objfile
->symbol_obstack
, j
);
487 memset (fn_fields
, 0, j
);
488 fn_fieldlists
= (struct fn_fieldlist
*)
489 alloca (nmethods
* sizeof (struct fn_fieldlist
));
492 for (i
= 0; i
< nmethods
; i
++)
499 methods
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
500 method
= value_ind (methods
);
503 { /* Re-use method value for next method. */
504 VALUE_ADDRESS (method
) += TYPE_LENGTH (VALUE_TYPE (method
));
505 VALUE_LAZY (method
) = 1;
508 /* Get method name. */
510 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
511 mname
= get_java_utf8_name (&objfile
->type_obstack
, temp
);
512 if (strcmp (mname
, "<init>") == 0)
513 mname
= unqualified_name
;
515 /* Check for an existing method with the same name.
516 * This makes building the fn_fieldslists an O(nmethods**2)
517 * operation. That could be using hashing, but I doubt it
518 * is worth it. Note that we do maintain the order of methods
519 * in the inferior's Method table (as long as that is grouped
520 * by method name), which I think is desirable. --PB */
521 for (k
= 0, j
= TYPE_NFN_FIELDS (type
); ; )
524 { /* No match - new method name. */
525 j
= TYPE_NFN_FIELDS(type
)++;
526 fn_fieldlists
[j
].name
= mname
;
527 fn_fieldlists
[j
].length
= 1;
528 fn_fieldlists
[j
].fn_fields
= &fn_fields
[i
];
532 if (strcmp (mname
, fn_fieldlists
[j
].name
) == 0)
533 { /* Found an existing method with the same name. */
535 if (mname
!= unqualified_name
)
536 obstack_free (&objfile
->type_obstack
, mname
);
537 mname
= fn_fieldlists
[j
].name
;
538 fn_fieldlists
[j
].length
++;
539 k
= i
- k
; /* Index of new slot. */
540 /* Shift intervening fn_fields (between k and i) down. */
541 for (l
= i
; l
> k
; l
--) fn_fields
[l
] = fn_fields
[l
-1];
542 for (l
= TYPE_NFN_FIELDS (type
); --l
> j
; )
543 fn_fieldlists
[l
].fn_fields
++;
546 k
+= fn_fieldlists
[j
].length
;
548 fn_fields
[k
].physname
= "";
549 fn_fields
[k
].is_stub
= 1;
550 fn_fields
[k
].type
= make_function_type (java_void_type
, NULL
); /* FIXME*/
551 TYPE_CODE (fn_fields
[k
].type
) = TYPE_CODE_METHOD
;
554 j
= TYPE_NFN_FIELDS(type
) * sizeof (struct fn_fieldlist
);
555 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
556 obstack_alloc (&dynamics_objfile
->symbol_obstack
, j
);
557 memcpy (TYPE_FN_FIELDLISTS (type
), fn_fieldlists
, j
);
563 get_java_object_type ()
565 return java_object_type
;
569 is_object_type (type
)
572 CHECK_TYPEDEF (type
);
573 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
575 struct type
*ttype
= check_typedef (TYPE_TARGET_TYPE (type
));
577 if (TYPE_CODE (ttype
) != TYPE_CODE_STRUCT
)
579 while (TYPE_N_BASECLASSES (ttype
) > 0)
580 ttype
= TYPE_BASECLASS (ttype
, 0);
581 name
= TYPE_TAG_NAME (ttype
);
582 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
584 name
= TYPE_NFIELDS (ttype
) > 0 ? TYPE_FIELD_NAME (ttype
, 0) : (char*)0;
585 if (name
!= NULL
&& strcmp (name
, "dtable") == 0)
587 if (java_object_type
== NULL
)
588 java_object_type
= type
;
596 java_primitive_type (signature
)
601 case 'B': return java_byte_type
;
602 case 'S': return java_short_type
;
603 case 'I': return java_int_type
;
604 case 'J': return java_long_type
;
605 case 'Z': return java_boolean_type
;
606 case 'C': return java_char_type
;
607 case 'F': return java_float_type
;
608 case 'D': return java_double_type
;
609 case 'V': return java_void_type
;
611 error ("unknown signature '%c' for primitive type", (char) signature
);
614 /* Return the demangled name of the Java type signature string SIGNATURE,
615 as a freshly allocated copy. */
618 java_demangle_type_signature (signature
)
625 while (*signature
== '[')
630 switch (signature
[0])
633 /* Substract 2 for 'L' and ';', but add 1 for final nul. */
634 result
= xmalloc (strlen (signature
) - 1 + 2 * array
);
637 for ( ; *signature
!= ';' && *signature
!= '\0'; signature
++)
639 if (*signature
== '/')
646 ptr
= TYPE_NAME (java_primitive_type (signature
[0]));
648 result
= xmalloc (i
+ 1 + 2 * array
);
649 strcpy (result
, ptr
);
663 java_lookup_type (signature
)
666 switch (signature
[0])
670 error ("java_lookup_type not fully inmplemented");
672 return java_primitive_type (signature
[0]);
676 /* Return the type of TYPE followed by DIMS pairs of [ ].
677 If DIMS == 0, TYPE is returned. */
680 java_array_type (type
, dims
)
686 error ("array types not implemented");
689 /* Create a Java string in the inferior from a (Utf8) literal. */
692 java_value_string (ptr
, len
)
696 error ("not implemented - java_value_string"); /* FIXME */
699 /* Print the character C on STREAM as part of the contents of a literal
700 string whose delimiter is QUOTER. Note that that format for printing
701 characters and strings is language specific. */
704 java_emit_char (c
, stream
, quoter
)
709 if (PRINT_LITERAL_FORM (c
))
711 if (c
== '\\' || c
== quoter
)
713 fputs_filtered ("\\", stream
);
715 fprintf_filtered (stream
, "%c", c
);
722 fputs_filtered ("\\n", stream
);
725 fputs_filtered ("\\b", stream
);
728 fputs_filtered ("\\t", stream
);
731 fputs_filtered ("\\f", stream
);
734 fputs_filtered ("\\r", stream
);
737 fputs_filtered ("\\e", stream
);
740 fputs_filtered ("\\a", stream
);
744 fprintf_filtered (stream
, "\\%.3o", (unsigned int) c
);
746 fprintf_filtered (stream
, "\\u%.4x", (unsigned int) c
);
753 java_printchar (c
, stream
)
757 fputs_filtered ("'", stream
);
758 java_emit_char (c
, stream
, '\'');
759 fputs_filtered ("'", stream
);
763 evaluate_subexp_java (expect_type
, exp
, pos
, noside
)
764 struct type
*expect_type
;
765 register struct expression
*exp
;
772 enum exp_opcode op
= exp
->elts
[*pos
].opcode
;
773 value_ptr arg1
, arg2
;
778 if (noside
== EVAL_SKIP
)
781 arg1
= evaluate_subexp_standard (expect_type
, exp
, pos
, EVAL_NORMAL
);
782 if (is_object_type (VALUE_TYPE (arg1
)))
784 struct type
*type
= type_from_class (java_class_from_object (arg1
));
785 arg1
= value_cast (lookup_pointer_type (type
), arg1
);
787 if (noside
== EVAL_SKIP
)
789 return value_ind (arg1
);
791 case BINOP_SUBSCRIPT
:
793 arg1
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
794 arg2
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
795 if (noside
== EVAL_SKIP
)
797 /* If the user attempts to subscript something that is not an
798 array or pointer type (like a plain int variable for example),
799 then report this as an error. */
802 type
= check_typedef (VALUE_TYPE (arg1
));
803 name
= TYPE_NAME (type
);
804 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
806 type
= check_typedef (TYPE_TARGET_TYPE (type
));
807 if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
808 && TYPE_TAG_NAME (type
) != NULL
809 && TYPE_TAG_NAME (type
)[0] == '[')
813 struct type
*el_type
;
816 value_ptr clas
= java_class_from_object(arg1
);
817 value_ptr temp
= clas
;
818 /* Get CLASS_ELEMENT_TYPE of the array type. */
819 temp
= value_struct_elt (&temp
, NULL
, "methods",
821 VALUE_TYPE (temp
) = VALUE_TYPE (clas
);
822 el_type
= type_from_class (temp
);
823 if (TYPE_CODE (el_type
) == TYPE_CODE_STRUCT
)
824 el_type
= lookup_pointer_type (el_type
);
826 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
827 return value_zero (el_type
, VALUE_LVAL (arg1
));
828 address
= value_as_pointer (arg1
);
829 address
+= JAVA_OBJECT_SIZE
;
830 read_memory (address
, buf4
, 4);
831 length
= (long) extract_signed_integer (buf4
, 4);
832 index
= (long) value_as_long (arg2
);
833 if (index
>= length
|| index
< 0)
834 error ("array index (%ld) out of bounds (length: %ld)",
836 address
= (address
+ 4) + index
* TYPE_LENGTH (el_type
);
837 return value_at (el_type
, address
, NULL
);
840 else if (TYPE_CODE (type
) == TYPE_CODE_ARRAY
)
842 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
843 return value_zero (TYPE_TARGET_TYPE (type
), VALUE_LVAL (arg1
));
845 return value_subscript (arg1
, arg2
);
848 name
== TYPE_TAG_NAME (type
);
850 error ("cannot subscript something of type `%s'", name
);
852 error ("cannot subscript requested type");
856 i
= longest_to_int (exp
->elts
[pc
+ 1].longconst
);
857 (*pos
) += 3 + BYTES_TO_EXP_ELEM (i
+ 1);
858 if (noside
== EVAL_SKIP
)
860 return java_value_string (&exp
->elts
[pc
+ 2].string
, i
);
862 case STRUCTOP_STRUCT
:
863 arg1
= evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
864 /* Convert object field (such as TYPE.class) to reference. */
865 if (TYPE_CODE (VALUE_TYPE (arg1
)) == TYPE_CODE_STRUCT
)
866 arg1
= value_addr (arg1
);
872 return evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
874 return value_from_longest (builtin_type_long
, (LONGEST
) 1);
878 java_create_fundamental_type (objfile
, typeid)
879 struct objfile
*objfile
;
884 case FT_VOID
: return java_void_type
;
885 case FT_BOOLEAN
: return java_boolean_type
;
886 case FT_CHAR
: return java_char_type
;
887 case FT_FLOAT
: return java_float_type
;
888 case FT_DBL_PREC_FLOAT
: return java_double_type
;
889 case FT_BYTE
: case FT_SIGNED_CHAR
: return java_byte_type
;
890 case FT_SHORT
: case FT_SIGNED_SHORT
: return java_short_type
;
891 case FT_INTEGER
: case FT_SIGNED_INTEGER
: return java_int_type
;
892 case FT_LONG
: case FT_SIGNED_LONG
: return java_long_type
;
894 return c_create_fundamental_type (objfile
, typeid);
897 /* Table mapping opcodes into strings for printing operators
898 and precedences of the operators. */
900 const struct op_print java_op_print_tab
[] =
902 {",", BINOP_COMMA
, PREC_COMMA
, 0},
903 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
904 {"||", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
905 {"&&", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
906 {"|", BINOP_BITWISE_IOR
, PREC_BITWISE_IOR
, 0},
907 {"^", BINOP_BITWISE_XOR
, PREC_BITWISE_XOR
, 0},
908 {"&", BINOP_BITWISE_AND
, PREC_BITWISE_AND
, 0},
909 {"==", BINOP_EQUAL
, PREC_EQUAL
, 0},
910 {"!=", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
911 {"<=", BINOP_LEQ
, PREC_ORDER
, 0},
912 {">=", BINOP_GEQ
, PREC_ORDER
, 0},
913 {">", BINOP_GTR
, PREC_ORDER
, 0},
914 {"<", BINOP_LESS
, PREC_ORDER
, 0},
915 {">>", BINOP_RSH
, PREC_SHIFT
, 0},
916 {"<<", BINOP_LSH
, PREC_SHIFT
, 0},
918 {">>>", BINOP_
???, PREC_SHIFT
, 0},
920 {"+", BINOP_ADD
, PREC_ADD
, 0},
921 {"-", BINOP_SUB
, PREC_ADD
, 0},
922 {"*", BINOP_MUL
, PREC_MUL
, 0},
923 {"/", BINOP_DIV
, PREC_MUL
, 0},
924 {"%", BINOP_REM
, PREC_MUL
, 0},
925 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
926 {"!", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
927 {"~", UNOP_COMPLEMENT
, PREC_PREFIX
, 0},
928 {"*", UNOP_IND
, PREC_PREFIX
, 0},
930 {"instanceof", ???, ???, 0},
932 {"++", UNOP_PREINCREMENT
, PREC_PREFIX
, 0},
933 {"--", UNOP_PREDECREMENT
, PREC_PREFIX
, 0},
937 const struct language_defn java_language_defn
= {
938 "java", /* Language name */
945 evaluate_subexp_java
,
946 java_printchar
, /* Print a character constant */
947 c_printstr
, /* Function to print string constant */
948 java_create_fundamental_type
, /* Create fundamental type in this language */
949 java_print_type
, /* Print a type using appropriate syntax */
950 java_val_print
, /* Print a value using appropriate syntax */
951 java_value_print
, /* Print a top-level value */
952 {"", "", "", ""}, /* Binary format info */
953 {"0%lo", "0", "o", ""}, /* Octal format info */
954 {"%ld", "", "d", ""}, /* Decimal format info */
955 {"0x%lx", "0x", "x", ""}, /* Hex format info */
956 java_op_print_tab
, /* expression operators for printing */
957 0, /* not c-style arrays */
958 0, /* String lower bound */
959 &builtin_type_char
, /* Type of string elements */
964 _initialize_java_language ()
967 java_int_type
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
968 java_short_type
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
969 java_long_type
= init_type (TYPE_CODE_INT
, 8, 0, "long", NULL
);
970 java_byte_type
= init_type (TYPE_CODE_INT
, 1, 0, "byte", NULL
);
971 java_boolean_type
= init_type (TYPE_CODE_BOOL
, 1, 0, "boolean", NULL
);
972 java_char_type
= init_type (TYPE_CODE_CHAR
, 2, 0, "char", NULL
);
973 java_float_type
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
974 java_double_type
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
975 java_void_type
= init_type (TYPE_CODE_VOID
, 1, 0, "void", NULL
);
977 add_language (&java_language_defn
);
980 /* Cleanup code that should be run on every "run".
981 We should use make_run_cleanup to have this be called.
982 But will that mess up values in value histry? FIXME */
984 void java_rerun_cleanup ()
986 if (class_symtab
!= NULL
)
988 free_symtab (class_symtab
); /* ??? */
991 if (dynamics_objfile
!= NULL
)
993 free_objfile (dynamics_objfile
);
994 dynamics_objfile
= NULL
;
997 java_object_type
= NULL
;