1 /* Java language support routines for GDB, the GNU debugger.
2 Copyright 1997, 1998 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"
37 struct type
*java_int_type
;
38 struct type
*java_byte_type
;
39 struct type
*java_short_type
;
40 struct type
*java_long_type
;
41 struct type
*java_boolean_type
;
42 struct type
*java_char_type
;
43 struct type
*java_float_type
;
44 struct type
*java_double_type
;
45 struct type
*java_void_type
;
47 static void java_emit_char
PARAMS ((int c
, GDB_FILE
*stream
, int quoter
));
49 /* This objfile contains symtabs that have been dynamically created
50 to record dynamically loaded Java classes and dynamically
51 compiled java methods. */
53 static struct objfile
*dynamics_objfile
= NULL
;
55 static struct type
*java_link_class_type
PARAMS ((struct type
*, value_ptr
));
57 static struct objfile
*
58 get_dynamics_objfile ()
60 if (dynamics_objfile
== NULL
)
62 dynamics_objfile
= allocate_objfile (NULL
, 0);
64 return dynamics_objfile
;
68 /* symtab contains classes read from the inferior. */
70 static struct symtab
*class_symtab
= NULL
;
72 /* Maximum number of class in class_symtab before relocation is needed. */
74 static int class_symtab_space
;
77 get_java_class_symtab ()
79 if (class_symtab
== NULL
)
81 struct objfile
*objfile
= get_dynamics_objfile();
82 struct blockvector
*bv
;
84 class_symtab
= allocate_symtab ("<java-classes>", objfile
);
85 class_symtab
->language
= language_java
;
86 bv
= (struct blockvector
*)
87 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct blockvector
));
88 BLOCKVECTOR_NBLOCKS (bv
) = 1;
89 BLOCKVECTOR (class_symtab
) = bv
;
91 /* Allocate dummy STATIC_BLOCK. */
93 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct block
));
97 BLOCK_FUNCTION (bl
) = NULL
;
98 BLOCK_SUPERBLOCK (bl
) = NULL
;
99 BLOCK_GCC_COMPILED (bl
) = 0;
100 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = bl
;
102 /* Allocate GLOBAL_BLOCK. This has to be relocatable. */
103 class_symtab_space
= 128;
104 bl
= (struct block
*)
105 mmalloc (objfile
->md
,
106 sizeof (struct block
)
107 + ((class_symtab_space
- 1) * sizeof (struct symbol
*)));
108 *bl
= *BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
109 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
110 class_symtab
->free_ptr
= (char *) bl
;
116 add_class_symtab_symbol (sym
)
119 struct symtab
*symtab
= get_java_class_symtab ();
120 struct blockvector
*bv
= BLOCKVECTOR (symtab
);
121 struct block
*bl
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
122 if (BLOCK_NSYMS (bl
) >= class_symtab_space
)
124 /* Need to re-allocate. */
125 class_symtab_space
*= 2;
126 bl
= (struct block
*)
127 mrealloc (symtab
->objfile
->md
, bl
,
128 sizeof (struct block
)
129 + ((class_symtab_space
- 1) * sizeof (struct symbol
*)));
130 class_symtab
->free_ptr
= (char *) bl
;
131 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
134 BLOCK_SYM (bl
, BLOCK_NSYMS (bl
)) = sym
;
135 BLOCK_NSYMS (bl
) = BLOCK_NSYMS (bl
) + 1;
139 add_class_symbol (type
, addr
)
144 sym
= (struct symbol
*)
145 obstack_alloc (&dynamics_objfile
->symbol_obstack
, sizeof (struct symbol
));
146 memset (sym
, 0, sizeof (struct symbol
));
147 SYMBOL_LANGUAGE (sym
) = language_java
;
148 SYMBOL_NAME (sym
) = TYPE_TAG_NAME (type
);
149 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
150 /* SYMBOL_VALUE (sym) = valu;*/
151 SYMBOL_TYPE (sym
) = type
;
152 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
153 SYMBOL_VALUE_ADDRESS (sym
) = addr
;
159 java_lookup_class (name
)
163 sym
= lookup_symbol (name
, expression_context_block
, STRUCT_NAMESPACE
,
164 (int *) 0, (struct symtab
**) NULL
);
166 return SYMBOL_TYPE (sym
);
169 if (called from parser
)
171 call
lookup_class (or similar
) in inferior
;
174 addr
= found in inferior
;
179 type
= alloc_type (objfile
);
180 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
181 INIT_CPLUS_SPECIFIC (type
);
182 TYPE_TAG_NAME (type
) = obsavestring (name
, strlen(name
), &objfile
->type_obstack
);
183 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
187 /* FIXME - should search inferior's symbol table. */
192 /* Return a nul-terminated string (allocated on OBSTACK) for
193 a name given by NAME (which has type Utf8Const*). */
196 get_java_utf8_name (obstack
, name
)
197 struct obstack
*obstack
;
201 value_ptr temp
= name
;
204 temp
= value_struct_elt (&temp
, NULL
, "length", NULL
, "structure");
205 name_length
= (int) value_as_long (temp
);
206 data_addr
= VALUE_ADDRESS (temp
) + VALUE_OFFSET (temp
)
207 + TYPE_LENGTH (VALUE_TYPE (temp
));
208 chrs
= obstack_alloc (obstack
, name_length
+1);
209 chrs
[name_length
] = '\0';
210 read_memory_section (data_addr
, chrs
, name_length
, NULL
);
215 java_class_from_object (obj_val
)
218 /* This is all rather inefficient, since the offsets of dtable and
219 class are fixed. FIXME */
220 value_ptr dtable_val
;
222 if (TYPE_CODE (VALUE_TYPE (obj_val
)) == TYPE_CODE_PTR
223 && TYPE_LENGTH (TYPE_TARGET_TYPE (VALUE_TYPE (obj_val
))) == 0)
226 sym
= lookup_symbol ("Hjava_lang_Object", NULL
, STRUCT_NAMESPACE
,
227 (int *) 0, (struct symtab
**) NULL
);
229 obj_val
= value_at (VALUE_TYPE (sym
),
230 value_as_pointer (obj_val
), NULL
);
233 dtable_val
= value_struct_elt (&obj_val
, NULL
, "dtable", NULL
, "structure");
234 return value_struct_elt (&dtable_val
, NULL
, "class", NULL
, "structure");
237 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
239 java_class_is_primitive (clas
)
242 value_ptr dtable
= value_struct_elt (&clas
, NULL
, "dtable", NULL
, "struct");
243 CORE_ADDR i
= value_as_pointer (dtable
);
244 return (int) (i
& 0x7fffffff) == (int) 0x7fffffff;
247 /* Read a Kaffe Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
250 type_from_class (clas
)
256 struct objfile
*objfile
;
264 type
= check_typedef (VALUE_TYPE (clas
));
265 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
267 if (value_logical_not (clas
))
269 clas
= value_ind (clas
);
271 addr
= VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
);
274 get_java_class_symtab ();
275 bl
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab
), GLOBAL_BLOCK
);
276 for (i
= BLOCK_NSYMS (bl
); --i
>= 0; )
278 struct symbol
*sym
= BLOCK_SYM (bl
, i
);
279 if (SYMBOL_VALUE_ADDRESS (sym
) == addr
)
280 return SYMBOL_TYPE (sym
);
284 objfile
= get_dynamics_objfile();
285 if (java_class_is_primitive (clas
))
289 sig
= value_struct_elt (&temp
, NULL
, "msize", NULL
, "structure");
290 return java_primitive_type (value_as_long (sig
));
293 /* Get Class name. */
294 /* if clasloader non-null, prepend loader address. FIXME */
296 utf8_name
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
297 name
= get_java_utf8_name (&objfile
->type_obstack
, utf8_name
);
298 for (nptr
= name
; *nptr
!= 0; nptr
++)
304 type
= java_lookup_class (name
);
308 type
= alloc_type (objfile
);
309 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
310 INIT_CPLUS_SPECIFIC (type
);
316 /* Set array element type. */
317 temp
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
318 VALUE_TYPE (temp
) = lookup_pointer_type (VALUE_TYPE (clas
));
319 TYPE_TARGET_TYPE (type
) = type_from_class (temp
);
322 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
323 TYPE_TAG_NAME (type
) = name
;
325 add_class_symtab_symbol (add_class_symbol (type
, addr
));
326 return java_link_class_type (type
, clas
);
329 /* Fill in class TYPE with data from the CLAS value. */
332 java_link_class_type (type
, clas
)
337 char *unqualified_name
;
338 char *name
= TYPE_TAG_NAME (type
);
339 int ninterfaces
, nfields
, nmethods
;
340 int type_is_object
= 0;
341 struct fn_field
*fn_fields
;
342 struct fn_fieldlist
*fn_fieldlists
;
343 value_ptr fields
, field
, method
, methods
;
345 struct objfile
*objfile
= get_dynamics_objfile();
348 unqualified_name
= strrchr (name
, '.');
349 if (unqualified_name
== NULL
)
350 unqualified_name
= name
;
353 temp
= value_struct_elt (&temp
, NULL
, "superclass", NULL
, "structure");
354 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
356 tsuper
= get_java_object_type ();
357 if (tsuper
&& TYPE_CODE (tsuper
) == TYPE_CODE_PTR
)
358 tsuper
= TYPE_TARGET_TYPE (tsuper
);
362 tsuper
= type_from_class (temp
);
368 ninterfaces
= value_as_long (value_struct_elt (&temp
, NULL
, "interface_len", NULL
, "structure"));
370 TYPE_N_BASECLASSES (type
) = (tsuper
== NULL
? 0 : 1) + ninterfaces
;
372 nfields
= value_as_long (value_struct_elt (&temp
, NULL
, "nfields", NULL
, "structure"));
373 nfields
+= TYPE_N_BASECLASSES (type
);
374 nfields
++; /* Add one for dummy "class" field. */
375 TYPE_NFIELDS (type
) = nfields
;
376 TYPE_FIELDS (type
) = (struct field
*)
377 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
379 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
381 TYPE_FIELD_PRIVATE_BITS (type
) =
382 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
383 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
385 TYPE_FIELD_PROTECTED_BITS (type
) =
386 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
387 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
389 TYPE_FIELD_IGNORE_BITS (type
) =
390 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
391 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
393 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
394 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
395 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
399 TYPE_BASECLASS (type
, 0) = tsuper
;
401 SET_TYPE_FIELD_PRIVATE (type
, 0);
405 if (name
[0] == '[' && tsuper
!= NULL
)
407 TYPE_LENGTH (type
) = TYPE_LENGTH (tsuper
) + 4; /* size with "length" */
412 temp
= value_struct_elt (&temp
, NULL
, "bfsize", NULL
, "structure");
413 TYPE_LENGTH (type
) = value_as_long (temp
);
417 nfields
--; /* First set up dummy "class" field. */
418 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, nfields
),
419 VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
));
420 TYPE_FIELD_NAME (type
, nfields
) = "class";
421 TYPE_FIELD_TYPE (type
, nfields
) = VALUE_TYPE (clas
);
422 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
424 for (i
= TYPE_N_BASECLASSES (type
); i
< nfields
; i
++)
431 fields
= value_struct_elt (&temp
, NULL
, "fields", NULL
, "structure");
432 field
= value_ind (fields
);
435 { /* Re-use field value for next field. */
436 VALUE_ADDRESS (field
) += TYPE_LENGTH (VALUE_TYPE (field
));
437 VALUE_LAZY (field
) = 1;
440 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
441 TYPE_FIELD_NAME (type
, i
) =
442 get_java_utf8_name (&objfile
->type_obstack
, temp
);
444 accflags
= value_as_long (value_struct_elt (&temp
, NULL
, "accflags",
447 temp
= value_struct_elt (&temp
, NULL
, "info", NULL
, "structure");
448 boffset
= value_as_long (value_struct_elt (&temp
, NULL
, "boffset",
450 if (accflags
& 0x0001) /* public access */
454 if (accflags
& 0x0002) /* private access */
456 SET_TYPE_FIELD_PRIVATE (type
, i
);
458 if (accflags
& 0x0004) /* protected access */
460 SET_TYPE_FIELD_PROTECTED (type
, i
);
462 if (accflags
& 0x0008) /* ACC_STATIC */
463 SET_FIELD_PHYSADDR(TYPE_FIELD(type
, i
), boffset
);
465 TYPE_FIELD_BITPOS (type
, i
) = 8 * boffset
;
466 if (accflags
& 0x8000) /* FIELD_UNRESOLVED_FLAG */
468 TYPE_FIELD_TYPE (type
, i
) = get_java_object_type (); /* FIXME */
474 temp
= value_struct_elt (&temp
, NULL
, "type", NULL
, "structure");
475 ftype
= type_from_class (temp
);
476 if (TYPE_CODE (ftype
) == TYPE_CODE_STRUCT
)
477 ftype
= lookup_pointer_type (ftype
);
478 TYPE_FIELD_TYPE (type
, i
) = ftype
;
483 nmethods
= value_as_long (value_struct_elt (&temp
, NULL
, "nmethods",
485 TYPE_NFN_FIELDS_TOTAL (type
) = nmethods
;
486 j
= nmethods
* sizeof (struct fn_field
);
487 fn_fields
= (struct fn_field
*)
488 obstack_alloc (&dynamics_objfile
->symbol_obstack
, j
);
489 memset (fn_fields
, 0, j
);
490 fn_fieldlists
= (struct fn_fieldlist
*)
491 alloca (nmethods
* sizeof (struct fn_fieldlist
));
494 for (i
= 0; i
< nmethods
; i
++)
501 methods
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
502 method
= value_ind (methods
);
505 { /* Re-use method value for next method. */
506 VALUE_ADDRESS (method
) += TYPE_LENGTH (VALUE_TYPE (method
));
507 VALUE_LAZY (method
) = 1;
510 /* Get method name. */
512 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
513 mname
= get_java_utf8_name (&objfile
->type_obstack
, temp
);
514 if (strcmp (mname
, "<init>") == 0)
515 mname
= unqualified_name
;
517 /* Check for an existing method with the same name.
518 * This makes building the fn_fieldslists an O(nmethods**2)
519 * operation. That could be using hashing, but I doubt it
520 * is worth it. Note that we do maintain the order of methods
521 * in the inferior's Method table (as long as that is grouped
522 * by method name), which I think is desirable. --PB */
523 for (k
= 0, j
= TYPE_NFN_FIELDS (type
); ; )
526 { /* No match - new method name. */
527 j
= TYPE_NFN_FIELDS(type
)++;
528 fn_fieldlists
[j
].name
= mname
;
529 fn_fieldlists
[j
].length
= 1;
530 fn_fieldlists
[j
].fn_fields
= &fn_fields
[i
];
534 if (strcmp (mname
, fn_fieldlists
[j
].name
) == 0)
535 { /* Found an existing method with the same name. */
537 if (mname
!= unqualified_name
)
538 obstack_free (&objfile
->type_obstack
, mname
);
539 mname
= fn_fieldlists
[j
].name
;
540 fn_fieldlists
[j
].length
++;
541 k
= i
- k
; /* Index of new slot. */
542 /* Shift intervening fn_fields (between k and i) down. */
543 for (l
= i
; l
> k
; l
--) fn_fields
[l
] = fn_fields
[l
-1];
544 for (l
= TYPE_NFN_FIELDS (type
); --l
> j
; )
545 fn_fieldlists
[l
].fn_fields
++;
548 k
+= fn_fieldlists
[j
].length
;
550 fn_fields
[k
].physname
= "";
551 fn_fields
[k
].is_stub
= 1;
552 fn_fields
[k
].type
= make_function_type (java_void_type
, NULL
); /* FIXME*/
553 TYPE_CODE (fn_fields
[k
].type
) = TYPE_CODE_METHOD
;
556 j
= TYPE_NFN_FIELDS(type
) * sizeof (struct fn_fieldlist
);
557 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
558 obstack_alloc (&dynamics_objfile
->symbol_obstack
, j
);
559 memcpy (TYPE_FN_FIELDLISTS (type
), fn_fieldlists
, j
);
564 static struct type
*java_object_type
;
567 get_java_object_type ()
569 return java_object_type
;
573 is_object_type (type
)
576 CHECK_TYPEDEF (type
);
577 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
579 struct type
*ttype
= check_typedef (TYPE_TARGET_TYPE (type
));
581 if (TYPE_CODE (ttype
) != TYPE_CODE_STRUCT
)
583 while (TYPE_N_BASECLASSES (ttype
) > 0)
584 ttype
= TYPE_BASECLASS (ttype
, 0);
585 name
= TYPE_TAG_NAME (ttype
);
586 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
588 name
= TYPE_NFIELDS (ttype
) > 0 ? TYPE_FIELD_NAME (ttype
, 0) : (char*)0;
589 if (name
!= NULL
&& strcmp (name
, "dtable") == 0)
591 if (java_object_type
== NULL
)
592 java_object_type
= type
;
600 java_primitive_type (signature
)
605 case 'B': return java_byte_type
;
606 case 'S': return java_short_type
;
607 case 'I': return java_int_type
;
608 case 'J': return java_long_type
;
609 case 'Z': return java_boolean_type
;
610 case 'C': return java_char_type
;
611 case 'F': return java_float_type
;
612 case 'D': return java_double_type
;
613 case 'V': return java_void_type
;
615 error ("unknown signature '%c' for primitive type", (char) signature
);
618 /* Return the demangled name of the Java type signature string SIGNATURE,
619 as a freshly allocated copy. */
622 java_demangle_type_signature (signature
)
629 while (*signature
== '[')
634 switch (signature
[0])
637 /* Substract 2 for 'L' and ';', but add 1 for final nul. */
638 result
= xmalloc (strlen (signature
) - 1 + 2 * array
);
641 for ( ; *signature
!= ';' && *signature
!= '\0'; signature
++)
643 if (*signature
== '/')
650 ptr
= TYPE_NAME (java_primitive_type (signature
[0]));
652 result
= xmalloc (i
+ 1 + 2 * array
);
653 strcpy (result
, ptr
);
667 java_lookup_type (signature
)
670 switch (signature
[0])
674 error ("java_lookup_type not fully inmplemented");
676 return java_primitive_type (signature
[0]);
680 /* Return the type of TYPE followed by DIMS pairs of [ ].
681 If DIMS == 0, TYPE is returned. */
684 java_array_type (type
, dims
)
688 struct type
*range_type
;
692 range_type
= create_range_type (NULL
, builtin_type_int
, 0, 0);
694 type
= create_array_type (NULL
, type
, range_type
);
700 /* Create a Java string in the inferior from a (Utf8) literal. */
703 java_value_string (ptr
, len
)
707 error ("not implemented - java_value_string"); /* FIXME */
710 /* Print the character C on STREAM as part of the contents of a literal
711 string whose delimiter is QUOTER. Note that that format for printing
712 characters and strings is language specific. */
715 java_emit_char (c
, stream
, quoter
)
724 fprintf_filtered (stream
, "\\%c", c
);
727 fputs_filtered ("\\b", stream
);
730 fputs_filtered ("\\t", stream
);
733 fputs_filtered ("\\n", stream
);
736 fputs_filtered ("\\f", stream
);
739 fputs_filtered ("\\r", stream
);
743 fputc_filtered (c
, stream
);
745 fprintf_filtered (stream
, "\\u%.4x", (unsigned int) c
);
751 evaluate_subexp_java (expect_type
, exp
, pos
, noside
)
752 struct type
*expect_type
;
753 register struct expression
*exp
;
760 enum exp_opcode op
= exp
->elts
[*pos
].opcode
;
761 value_ptr arg1
, arg2
;
766 if (noside
== EVAL_SKIP
)
769 arg1
= evaluate_subexp_standard (expect_type
, exp
, pos
, EVAL_NORMAL
);
770 if (is_object_type (VALUE_TYPE (arg1
)))
772 struct type
*type
= type_from_class (java_class_from_object (arg1
));
773 arg1
= value_cast (lookup_pointer_type (type
), arg1
);
775 if (noside
== EVAL_SKIP
)
777 return value_ind (arg1
);
779 case BINOP_SUBSCRIPT
:
781 arg1
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
782 arg2
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
783 if (noside
== EVAL_SKIP
)
785 /* If the user attempts to subscript something that is not an
786 array or pointer type (like a plain int variable for example),
787 then report this as an error. */
790 type
= check_typedef (VALUE_TYPE (arg1
));
791 name
= TYPE_NAME (type
);
792 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
794 type
= check_typedef (TYPE_TARGET_TYPE (type
));
795 if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
796 && TYPE_TAG_NAME (type
) != NULL
797 && TYPE_TAG_NAME (type
)[0] == '[')
801 struct type
*el_type
;
804 value_ptr clas
= java_class_from_object(arg1
);
805 value_ptr temp
= clas
;
806 /* Get CLASS_ELEMENT_TYPE of the array type. */
807 temp
= value_struct_elt (&temp
, NULL
, "methods",
809 VALUE_TYPE (temp
) = VALUE_TYPE (clas
);
810 el_type
= type_from_class (temp
);
811 if (TYPE_CODE (el_type
) == TYPE_CODE_STRUCT
)
812 el_type
= lookup_pointer_type (el_type
);
814 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
815 return value_zero (el_type
, VALUE_LVAL (arg1
));
816 address
= value_as_pointer (arg1
);
817 address
+= JAVA_OBJECT_SIZE
;
818 read_memory (address
, buf4
, 4);
819 length
= (long) extract_signed_integer (buf4
, 4);
820 index
= (long) value_as_long (arg2
);
821 if (index
>= length
|| index
< 0)
822 error ("array index (%ld) out of bounds (length: %ld)",
824 address
= (address
+ 4) + index
* TYPE_LENGTH (el_type
);
825 return value_at (el_type
, address
, NULL
);
828 else if (TYPE_CODE (type
) == TYPE_CODE_ARRAY
)
830 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
831 return value_zero (TYPE_TARGET_TYPE (type
), VALUE_LVAL (arg1
));
833 return value_subscript (arg1
, arg2
);
836 name
== TYPE_TAG_NAME (type
);
838 error ("cannot subscript something of type `%s'", name
);
840 error ("cannot subscript requested type");
844 i
= longest_to_int (exp
->elts
[pc
+ 1].longconst
);
845 (*pos
) += 3 + BYTES_TO_EXP_ELEM (i
+ 1);
846 if (noside
== EVAL_SKIP
)
848 return java_value_string (&exp
->elts
[pc
+ 2].string
, i
);
850 case STRUCTOP_STRUCT
:
851 arg1
= evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
852 /* Convert object field (such as TYPE.class) to reference. */
853 if (TYPE_CODE (VALUE_TYPE (arg1
)) == TYPE_CODE_STRUCT
)
854 arg1
= value_addr (arg1
);
860 return evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
862 return value_from_longest (builtin_type_long
, (LONGEST
) 1);
866 java_create_fundamental_type (objfile
, typeid)
867 struct objfile
*objfile
;
872 case FT_VOID
: return java_void_type
;
873 case FT_BOOLEAN
: return java_boolean_type
;
874 case FT_CHAR
: return java_char_type
;
875 case FT_FLOAT
: return java_float_type
;
876 case FT_DBL_PREC_FLOAT
: return java_double_type
;
877 case FT_BYTE
: case FT_SIGNED_CHAR
: return java_byte_type
;
878 case FT_SHORT
: case FT_SIGNED_SHORT
: return java_short_type
;
879 case FT_INTEGER
: case FT_SIGNED_INTEGER
: return java_int_type
;
880 case FT_LONG
: case FT_SIGNED_LONG
: return java_long_type
;
882 return c_create_fundamental_type (objfile
, typeid);
885 /* Table mapping opcodes into strings for printing operators
886 and precedences of the operators. */
888 const struct op_print java_op_print_tab
[] =
890 {",", BINOP_COMMA
, PREC_COMMA
, 0},
891 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
892 {"||", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
893 {"&&", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
894 {"|", BINOP_BITWISE_IOR
, PREC_BITWISE_IOR
, 0},
895 {"^", BINOP_BITWISE_XOR
, PREC_BITWISE_XOR
, 0},
896 {"&", BINOP_BITWISE_AND
, PREC_BITWISE_AND
, 0},
897 {"==", BINOP_EQUAL
, PREC_EQUAL
, 0},
898 {"!=", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
899 {"<=", BINOP_LEQ
, PREC_ORDER
, 0},
900 {">=", BINOP_GEQ
, PREC_ORDER
, 0},
901 {">", BINOP_GTR
, PREC_ORDER
, 0},
902 {"<", BINOP_LESS
, PREC_ORDER
, 0},
903 {">>", BINOP_RSH
, PREC_SHIFT
, 0},
904 {"<<", BINOP_LSH
, PREC_SHIFT
, 0},
906 {">>>", BINOP_
???, PREC_SHIFT
, 0},
908 {"+", BINOP_ADD
, PREC_ADD
, 0},
909 {"-", BINOP_SUB
, PREC_ADD
, 0},
910 {"*", BINOP_MUL
, PREC_MUL
, 0},
911 {"/", BINOP_DIV
, PREC_MUL
, 0},
912 {"%", BINOP_REM
, PREC_MUL
, 0},
913 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
914 {"!", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
915 {"~", UNOP_COMPLEMENT
, PREC_PREFIX
, 0},
916 {"*", UNOP_IND
, PREC_PREFIX
, 0},
918 {"instanceof", ???, ???, 0},
920 {"++", UNOP_PREINCREMENT
, PREC_PREFIX
, 0},
921 {"--", UNOP_PREDECREMENT
, PREC_PREFIX
, 0},
925 const struct language_defn java_language_defn
= {
926 "java", /* Language name */
933 evaluate_subexp_java
,
934 c_printchar
, /* Print a character constant */
935 c_printstr
, /* Function to print string constant */
936 java_emit_char
, /* Function to print a single character */
937 java_create_fundamental_type
, /* Create fundamental type in this language */
938 java_print_type
, /* Print a type using appropriate syntax */
939 java_val_print
, /* Print a value using appropriate syntax */
940 java_value_print
, /* Print a top-level value */
941 {"", "", "", ""}, /* Binary format info */
942 {"0%lo", "0", "o", ""}, /* Octal format info */
943 {"%ld", "", "d", ""}, /* Decimal format info */
944 {"0x%lx", "0x", "x", ""}, /* Hex format info */
945 java_op_print_tab
, /* expression operators for printing */
946 0, /* not c-style arrays */
947 0, /* String lower bound */
948 &builtin_type_char
, /* Type of string elements */
953 _initialize_java_language ()
956 java_int_type
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
957 java_short_type
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
958 java_long_type
= init_type (TYPE_CODE_INT
, 8, 0, "long", NULL
);
959 java_byte_type
= init_type (TYPE_CODE_INT
, 1, 0, "byte", NULL
);
960 java_boolean_type
= init_type (TYPE_CODE_BOOL
, 1, 0, "boolean", NULL
);
961 java_char_type
= init_type (TYPE_CODE_CHAR
, 2, 0, "char", NULL
);
962 java_float_type
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
963 java_double_type
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
964 java_void_type
= init_type (TYPE_CODE_VOID
, 1, 0, "void", NULL
);
966 add_language (&java_language_defn
);
969 /* Cleanup code that should be run on every "run".
970 We should use make_run_cleanup to have this be called.
971 But will that mess up values in value histry? FIXME */
973 void java_rerun_cleanup ()
975 if (class_symtab
!= NULL
)
977 free_symtab (class_symtab
); /* ??? */
980 if (dynamics_objfile
!= NULL
)
982 free_objfile (dynamics_objfile
);
983 dynamics_objfile
= NULL
;
986 java_object_type
= NULL
;