1 /* Java language support routines for GDB, the GNU debugger.
2 Copyright 1997, 1998, 1999 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 int java_demangled_signature_length
PARAMS ((char*));
48 static void java_demangled_signature_copy
PARAMS ((char*, char*));
50 static void java_emit_char
PARAMS ((int c
, GDB_FILE
*stream
, int quoter
));
52 /* This objfile contains symtabs that have been dynamically created
53 to record dynamically loaded Java classes and dynamically
54 compiled java methods. */
56 static struct objfile
*dynamics_objfile
= NULL
;
58 static struct type
*java_link_class_type
PARAMS ((struct type
*, value_ptr
));
60 static struct objfile
*
61 get_dynamics_objfile ()
63 if (dynamics_objfile
== NULL
)
65 dynamics_objfile
= allocate_objfile (NULL
, 0, 0, 0);
67 return dynamics_objfile
;
71 /* symtab contains classes read from the inferior. */
73 static struct symtab
*class_symtab
= NULL
;
75 /* Maximum number of class in class_symtab before relocation is needed. */
77 static int class_symtab_space
;
80 get_java_class_symtab ()
82 if (class_symtab
== NULL
)
84 struct objfile
*objfile
= get_dynamics_objfile();
85 struct blockvector
*bv
;
87 class_symtab
= allocate_symtab ("<java-classes>", objfile
);
88 class_symtab
->language
= language_java
;
89 bv
= (struct blockvector
*)
90 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct blockvector
));
91 BLOCKVECTOR_NBLOCKS (bv
) = 1;
92 BLOCKVECTOR (class_symtab
) = bv
;
94 /* Allocate dummy STATIC_BLOCK. */
96 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct block
));
100 BLOCK_FUNCTION (bl
) = NULL
;
101 BLOCK_SUPERBLOCK (bl
) = NULL
;
102 BLOCK_GCC_COMPILED (bl
) = 0;
103 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = bl
;
105 /* Allocate GLOBAL_BLOCK. This has to be relocatable. */
106 class_symtab_space
= 128;
107 bl
= (struct block
*)
108 mmalloc (objfile
->md
,
109 sizeof (struct block
)
110 + ((class_symtab_space
- 1) * sizeof (struct symbol
*)));
111 *bl
= *BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
112 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
113 class_symtab
->free_ptr
= (char *) bl
;
119 add_class_symtab_symbol (sym
)
122 struct symtab
*symtab
= get_java_class_symtab ();
123 struct blockvector
*bv
= BLOCKVECTOR (symtab
);
124 struct block
*bl
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
125 if (BLOCK_NSYMS (bl
) >= class_symtab_space
)
127 /* Need to re-allocate. */
128 class_symtab_space
*= 2;
129 bl
= (struct block
*)
130 mrealloc (symtab
->objfile
->md
, bl
,
131 sizeof (struct block
)
132 + ((class_symtab_space
- 1) * sizeof (struct symbol
*)));
133 class_symtab
->free_ptr
= (char *) bl
;
134 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
137 BLOCK_SYM (bl
, BLOCK_NSYMS (bl
)) = sym
;
138 BLOCK_NSYMS (bl
) = BLOCK_NSYMS (bl
) + 1;
141 static struct symbol
* add_class_symbol
PARAMS ((struct type
*type
, CORE_ADDR addr
));
143 static struct symbol
*
144 add_class_symbol (type
, addr
)
149 sym
= (struct symbol
*)
150 obstack_alloc (&dynamics_objfile
->symbol_obstack
, sizeof (struct symbol
));
151 memset (sym
, 0, sizeof (struct symbol
));
152 SYMBOL_LANGUAGE (sym
) = language_java
;
153 SYMBOL_NAME (sym
) = TYPE_TAG_NAME (type
);
154 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
155 /* SYMBOL_VALUE (sym) = valu;*/
156 SYMBOL_TYPE (sym
) = type
;
157 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
158 SYMBOL_VALUE_ADDRESS (sym
) = addr
;
164 java_lookup_class (name
)
168 sym
= lookup_symbol (name
, expression_context_block
, STRUCT_NAMESPACE
,
169 (int *) 0, (struct symtab
**) NULL
);
171 return SYMBOL_TYPE (sym
);
174 if (called from parser
)
176 call
lookup_class (or similar
) in inferior
;
179 addr
= found in inferior
;
184 type
= alloc_type (objfile
);
185 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
186 INIT_CPLUS_SPECIFIC (type
);
187 TYPE_TAG_NAME (type
) = obsavestring (name
, strlen(name
), &objfile
->type_obstack
);
188 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
192 /* FIXME - should search inferior's symbol table. */
197 /* Return a nul-terminated string (allocated on OBSTACK) for
198 a name given by NAME (which has type Utf8Const*). */
201 get_java_utf8_name (obstack
, name
)
202 struct obstack
*obstack
;
206 value_ptr temp
= name
;
209 temp
= value_struct_elt (&temp
, NULL
, "length", NULL
, "structure");
210 name_length
= (int) value_as_long (temp
);
211 data_addr
= VALUE_ADDRESS (temp
) + VALUE_OFFSET (temp
)
212 + TYPE_LENGTH (VALUE_TYPE (temp
));
213 chrs
= obstack_alloc (obstack
, name_length
+1);
214 chrs
[name_length
] = '\0';
215 read_memory_section (data_addr
, chrs
, name_length
, NULL
);
220 java_class_from_object (obj_val
)
223 /* This is all rather inefficient, since the offsets of vtable and
224 class are fixed. FIXME */
225 value_ptr vtable_val
;
227 if (TYPE_CODE (VALUE_TYPE (obj_val
)) == TYPE_CODE_PTR
228 && TYPE_LENGTH (TYPE_TARGET_TYPE (VALUE_TYPE (obj_val
))) == 0)
229 obj_val
= value_at (get_java_object_type (),
230 value_as_pointer (obj_val
), NULL
);
232 vtable_val
= value_struct_elt (&obj_val
, NULL
, "vtable", NULL
, "structure");
233 return value_struct_elt (&vtable_val
, NULL
, "class", NULL
, "structure");
236 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
238 java_class_is_primitive (clas
)
241 value_ptr vtable
= value_struct_elt (&clas
, NULL
, "vtable", NULL
, "struct");
242 CORE_ADDR i
= value_as_pointer (vtable
);
243 return (int) (i
& 0x7fffffff) == (int) 0x7fffffff;
246 /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
249 type_from_class (clas
)
255 struct objfile
*objfile
;
263 type
= check_typedef (VALUE_TYPE (clas
));
264 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
266 if (value_logical_not (clas
))
268 clas
= value_ind (clas
);
270 addr
= VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
);
273 get_java_class_symtab ();
274 bl
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab
), GLOBAL_BLOCK
);
275 for (i
= BLOCK_NSYMS (bl
); --i
>= 0; )
277 struct symbol
*sym
= BLOCK_SYM (bl
, i
);
278 if (SYMBOL_VALUE_ADDRESS (sym
) == addr
)
279 return SYMBOL_TYPE (sym
);
283 objfile
= get_dynamics_objfile();
284 if (java_class_is_primitive (clas
))
288 sig
= value_struct_elt (&temp
, NULL
, "method_count", NULL
, "structure");
289 return java_primitive_type (value_as_long (sig
));
292 /* Get Class name. */
293 /* if clasloader non-null, prepend loader address. FIXME */
295 utf8_name
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
296 name
= get_java_utf8_name (&objfile
->type_obstack
, utf8_name
);
297 for (nptr
= name
; *nptr
!= 0; nptr
++)
303 type
= java_lookup_class (name
);
307 type
= alloc_type (objfile
);
308 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
309 INIT_CPLUS_SPECIFIC (type
);
313 char *signature
= name
;
314 int namelen
= java_demangled_signature_length (signature
);
315 if (namelen
> strlen (name
))
316 name
= obstack_alloc (&objfile
->type_obstack
, namelen
+1);
317 java_demangled_signature_copy (name
, signature
);
318 name
[namelen
] = '\0';
321 /* Set array element type. */
322 temp
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
323 VALUE_TYPE (temp
) = lookup_pointer_type (VALUE_TYPE (clas
));
324 TYPE_TARGET_TYPE (type
) = type_from_class (temp
);
327 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
328 TYPE_TAG_NAME (type
) = name
;
330 add_class_symtab_symbol (add_class_symbol (type
, addr
));
331 return java_link_class_type (type
, clas
);
334 /* Fill in class TYPE with data from the CLAS value. */
337 java_link_class_type (type
, clas
)
342 char *unqualified_name
;
343 char *name
= TYPE_TAG_NAME (type
);
344 int ninterfaces
, nfields
, nmethods
;
345 int type_is_object
= 0;
346 struct fn_field
*fn_fields
;
347 struct fn_fieldlist
*fn_fieldlists
;
348 value_ptr fields
, field
, method
, methods
;
350 struct objfile
*objfile
= get_dynamics_objfile();
353 unqualified_name
= strrchr (name
, '.');
354 if (unqualified_name
== NULL
)
355 unqualified_name
= name
;
358 temp
= value_struct_elt (&temp
, NULL
, "superclass", NULL
, "structure");
359 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
361 tsuper
= get_java_object_type ();
362 if (tsuper
&& TYPE_CODE (tsuper
) == TYPE_CODE_PTR
)
363 tsuper
= TYPE_TARGET_TYPE (tsuper
);
367 tsuper
= type_from_class (temp
);
373 ninterfaces
= value_as_long (value_struct_elt (&temp
, NULL
, "interface_len", NULL
, "structure"));
375 TYPE_N_BASECLASSES (type
) = (tsuper
== NULL
? 0 : 1) + ninterfaces
;
377 nfields
= value_as_long (value_struct_elt (&temp
, NULL
, "field_count", NULL
, "structure"));
378 nfields
+= TYPE_N_BASECLASSES (type
);
379 nfields
++; /* Add one for dummy "class" field. */
380 TYPE_NFIELDS (type
) = nfields
;
381 TYPE_FIELDS (type
) = (struct field
*)
382 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
384 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
386 TYPE_FIELD_PRIVATE_BITS (type
) =
387 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
388 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
390 TYPE_FIELD_PROTECTED_BITS (type
) =
391 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
392 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
394 TYPE_FIELD_IGNORE_BITS (type
) =
395 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
396 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
398 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
399 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
400 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
404 TYPE_BASECLASS (type
, 0) = tsuper
;
406 SET_TYPE_FIELD_PRIVATE (type
, 0);
410 if (i
> 2 && name
[i
-1] == ']' && tsuper
!= NULL
)
413 TYPE_LENGTH (type
) = TYPE_LENGTH (tsuper
) + 4; /* size with "length" */
418 temp
= value_struct_elt (&temp
, NULL
, "size_in_bytes", NULL
, "structure");
419 TYPE_LENGTH (type
) = value_as_long (temp
);
423 nfields
--; /* First set up dummy "class" field. */
424 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, nfields
),
425 VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
));
426 TYPE_FIELD_NAME (type
, nfields
) = "class";
427 TYPE_FIELD_TYPE (type
, nfields
) = VALUE_TYPE (clas
);
428 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
430 for (i
= TYPE_N_BASECLASSES (type
); i
< nfields
; i
++)
437 fields
= value_struct_elt (&temp
, NULL
, "fields", NULL
, "structure");
438 field
= value_ind (fields
);
441 { /* Re-use field value for next field. */
442 VALUE_ADDRESS (field
) += TYPE_LENGTH (VALUE_TYPE (field
));
443 VALUE_LAZY (field
) = 1;
446 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
447 TYPE_FIELD_NAME (type
, i
) =
448 get_java_utf8_name (&objfile
->type_obstack
, temp
);
450 accflags
= value_as_long (value_struct_elt (&temp
, NULL
, "accflags",
453 temp
= value_struct_elt (&temp
, NULL
, "info", NULL
, "structure");
454 boffset
= value_as_long (value_struct_elt (&temp
, NULL
, "boffset",
456 if (accflags
& 0x0001) /* public access */
460 if (accflags
& 0x0002) /* private access */
462 SET_TYPE_FIELD_PRIVATE (type
, i
);
464 if (accflags
& 0x0004) /* protected access */
466 SET_TYPE_FIELD_PROTECTED (type
, i
);
468 if (accflags
& 0x0008) /* ACC_STATIC */
469 SET_FIELD_PHYSADDR(TYPE_FIELD(type
, i
), boffset
);
471 TYPE_FIELD_BITPOS (type
, i
) = 8 * boffset
;
472 if (accflags
& 0x8000) /* FIELD_UNRESOLVED_FLAG */
474 TYPE_FIELD_TYPE (type
, i
) = get_java_object_type (); /* FIXME */
480 temp
= value_struct_elt (&temp
, NULL
, "type", NULL
, "structure");
481 ftype
= type_from_class (temp
);
482 if (TYPE_CODE (ftype
) == TYPE_CODE_STRUCT
)
483 ftype
= lookup_pointer_type (ftype
);
484 TYPE_FIELD_TYPE (type
, i
) = ftype
;
489 nmethods
= value_as_long (value_struct_elt (&temp
, NULL
, "method_count",
491 TYPE_NFN_FIELDS_TOTAL (type
) = nmethods
;
492 j
= nmethods
* sizeof (struct fn_field
);
493 fn_fields
= (struct fn_field
*)
494 obstack_alloc (&dynamics_objfile
->symbol_obstack
, j
);
495 memset (fn_fields
, 0, j
);
496 fn_fieldlists
= (struct fn_fieldlist
*)
497 alloca (nmethods
* sizeof (struct fn_fieldlist
));
500 for (i
= 0; i
< nmethods
; i
++)
507 methods
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
508 method
= value_ind (methods
);
511 { /* Re-use method value for next method. */
512 VALUE_ADDRESS (method
) += TYPE_LENGTH (VALUE_TYPE (method
));
513 VALUE_LAZY (method
) = 1;
516 /* Get method name. */
518 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
519 mname
= get_java_utf8_name (&objfile
->type_obstack
, temp
);
520 if (strcmp (mname
, "<init>") == 0)
521 mname
= unqualified_name
;
523 /* Check for an existing method with the same name.
524 * This makes building the fn_fieldslists an O(nmethods**2)
525 * operation. That could be using hashing, but I doubt it
526 * is worth it. Note that we do maintain the order of methods
527 * in the inferior's Method table (as long as that is grouped
528 * by method name), which I think is desirable. --PB */
529 for (k
= 0, j
= TYPE_NFN_FIELDS (type
); ; )
532 { /* No match - new method name. */
533 j
= TYPE_NFN_FIELDS(type
)++;
534 fn_fieldlists
[j
].name
= mname
;
535 fn_fieldlists
[j
].length
= 1;
536 fn_fieldlists
[j
].fn_fields
= &fn_fields
[i
];
540 if (strcmp (mname
, fn_fieldlists
[j
].name
) == 0)
541 { /* Found an existing method with the same name. */
543 if (mname
!= unqualified_name
)
544 obstack_free (&objfile
->type_obstack
, mname
);
545 mname
= fn_fieldlists
[j
].name
;
546 fn_fieldlists
[j
].length
++;
547 k
= i
- k
; /* Index of new slot. */
548 /* Shift intervening fn_fields (between k and i) down. */
549 for (l
= i
; l
> k
; l
--) fn_fields
[l
] = fn_fields
[l
-1];
550 for (l
= TYPE_NFN_FIELDS (type
); --l
> j
; )
551 fn_fieldlists
[l
].fn_fields
++;
554 k
+= fn_fieldlists
[j
].length
;
556 fn_fields
[k
].physname
= "";
557 fn_fields
[k
].is_stub
= 1;
558 fn_fields
[k
].type
= make_function_type (java_void_type
, NULL
); /* FIXME*/
559 TYPE_CODE (fn_fields
[k
].type
) = TYPE_CODE_METHOD
;
562 j
= TYPE_NFN_FIELDS(type
) * sizeof (struct fn_fieldlist
);
563 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
564 obstack_alloc (&dynamics_objfile
->symbol_obstack
, j
);
565 memcpy (TYPE_FN_FIELDLISTS (type
), fn_fieldlists
, j
);
570 static struct type
*java_object_type
;
573 get_java_object_type ()
575 if (java_object_type
== NULL
)
578 sym
= lookup_symbol ("java.lang.Object", NULL
, STRUCT_NAMESPACE
,
579 (int *) 0, (struct symtab
**) NULL
);
581 error ("cannot find java.lang.Object");
582 java_object_type
= SYMBOL_TYPE (sym
);
584 return java_object_type
;
588 get_java_object_header_size ()
590 struct type
*objtype
= get_java_object_type ();
592 return (2 * TARGET_PTR_BIT
/ TARGET_CHAR_BIT
);
594 return TYPE_LENGTH (objtype
);
598 is_object_type (type
)
601 CHECK_TYPEDEF (type
);
602 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
604 struct type
*ttype
= check_typedef (TYPE_TARGET_TYPE (type
));
606 if (TYPE_CODE (ttype
) != TYPE_CODE_STRUCT
)
608 while (TYPE_N_BASECLASSES (ttype
) > 0)
609 ttype
= TYPE_BASECLASS (ttype
, 0);
610 name
= TYPE_TAG_NAME (ttype
);
611 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
613 name
= TYPE_NFIELDS (ttype
) > 0 ? TYPE_FIELD_NAME (ttype
, 0) : (char*)0;
614 if (name
!= NULL
&& strcmp (name
, "vtable") == 0)
616 if (java_object_type
== NULL
)
617 java_object_type
= type
;
625 java_primitive_type (signature
)
630 case 'B': return java_byte_type
;
631 case 'S': return java_short_type
;
632 case 'I': return java_int_type
;
633 case 'J': return java_long_type
;
634 case 'Z': return java_boolean_type
;
635 case 'C': return java_char_type
;
636 case 'F': return java_float_type
;
637 case 'D': return java_double_type
;
638 case 'V': return java_void_type
;
640 error ("unknown signature '%c' for primitive type", (char) signature
);
643 /* If name[0 .. namelen-1] is the name of a primitive Java type,
644 return that type. Otherwise, return NULL. */
647 java_primitive_type_from_name (name
, namelen
)
654 if (namelen
== 4 && memcmp (name
, "byte", 4) == 0)
655 return java_byte_type
;
656 if (namelen
== 7 && memcmp (name
, "boolean", 7) == 0)
657 return java_boolean_type
;
660 if (namelen
== 4 && memcmp (name
, "char", 4) == 0)
661 return java_char_type
;
663 if (namelen
== 6 && memcmp (name
, "double", 6) == 0)
664 return java_double_type
;
667 if (namelen
== 5 && memcmp (name
, "float", 5) == 0)
668 return java_float_type
;
671 if (namelen
== 3 && memcmp (name
, "int", 3) == 0)
672 return java_int_type
;
675 if (namelen
== 4 && memcmp (name
, "long", 4) == 0)
676 return java_long_type
;
679 if (namelen
== 5 && memcmp (name
, "short", 5) == 0)
680 return java_short_type
;
683 if (namelen
== 4 && memcmp (name
, "void", 4) == 0)
684 return java_void_type
;
690 /* Return the length (in bytes) of demangled name of the Java type
691 signature string SIGNATURE. */
694 java_demangled_signature_length (signature
)
698 for (; *signature
== '['; signature
++)
699 array
+= 2; /* Two chars for "[]". */
700 switch (signature
[0])
703 /* Subtract 2 for 'L' and ';'. */
704 return strlen (signature
) - 2 + array
;
706 return strlen (TYPE_NAME (java_primitive_type (signature
[0]))) + array
;
710 /* Demangle the Java type signature SIGNATURE, leaving the result in RESULT. */
713 java_demangled_signature_copy (result
, signature
)
720 while (*signature
== '[')
725 switch (signature
[0])
728 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
731 for ( ; *signature
!= ';' && *signature
!= '\0'; signature
++)
733 if (*signature
== '/')
740 ptr
= TYPE_NAME (java_primitive_type (signature
[0]));
742 strcpy (result
, ptr
);
753 /* Return the demangled name of the Java type signature string SIGNATURE,
754 as a freshly allocated copy. */
757 java_demangle_type_signature (signature
)
760 int length
= java_demangled_signature_length (signature
);
761 char *result
= xmalloc (length
+ 1);
762 java_demangled_signature_copy (result
, signature
);
763 result
[length
] = '\0';
768 java_lookup_type (signature
)
771 switch (signature
[0])
775 error ("java_lookup_type not fully implemented");
777 return java_primitive_type (signature
[0]);
781 /* Return the type of TYPE followed by DIMS pairs of [ ].
782 If DIMS == 0, TYPE is returned. */
785 java_array_type (type
, dims
)
789 struct type
*range_type
;
793 range_type
= create_range_type (NULL
, builtin_type_int
, 0, 0);
794 /* FIXME This is bogus! Java arrays are not gdb arrays! */
795 type
= create_array_type (NULL
, type
, range_type
);
801 /* Create a Java string in the inferior from a (Utf8) literal. */
804 java_value_string (ptr
, len
)
808 error ("not implemented - java_value_string"); /* FIXME */
811 /* Print the character C on STREAM as part of the contents of a literal
812 string whose delimiter is QUOTER. Note that that format for printing
813 characters and strings is language specific. */
816 java_emit_char (c
, stream
, quoter
)
825 fprintf_filtered (stream
, "\\%c", c
);
828 fputs_filtered ("\\b", stream
);
831 fputs_filtered ("\\t", stream
);
834 fputs_filtered ("\\n", stream
);
837 fputs_filtered ("\\f", stream
);
840 fputs_filtered ("\\r", stream
);
844 fputc_filtered (c
, stream
);
846 fprintf_filtered (stream
, "\\u%.4x", (unsigned int) c
);
852 evaluate_subexp_java (expect_type
, exp
, pos
, noside
)
853 struct type
*expect_type
;
854 register struct expression
*exp
;
861 enum exp_opcode op
= exp
->elts
[*pos
].opcode
;
862 value_ptr arg1
, arg2
;
867 if (noside
== EVAL_SKIP
)
870 arg1
= evaluate_subexp_java (NULL_TYPE
, exp
, pos
, EVAL_NORMAL
);
871 if (is_object_type (VALUE_TYPE (arg1
)))
875 type
= type_from_class (java_class_from_object (arg1
));
876 arg1
= value_cast (lookup_pointer_type (type
), arg1
);
878 if (noside
== EVAL_SKIP
)
880 return value_ind (arg1
);
882 case BINOP_SUBSCRIPT
:
884 arg1
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
885 arg2
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
886 if (noside
== EVAL_SKIP
)
888 /* If the user attempts to subscript something that is not an
889 array or pointer type (like a plain int variable for example),
890 then report this as an error. */
893 type
= check_typedef (VALUE_TYPE (arg1
));
894 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
895 type
= check_typedef (TYPE_TARGET_TYPE (type
));
896 name
= TYPE_NAME (type
);
898 name
= TYPE_TAG_NAME (type
);
899 i
= name
== NULL
? 0 : strlen (name
);
900 if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
901 && i
> 2 && name
[i
- 1] == ']')
905 struct type
*el_type
;
908 value_ptr clas
= java_class_from_object(arg1
);
909 value_ptr temp
= clas
;
910 /* Get CLASS_ELEMENT_TYPE of the array type. */
911 temp
= value_struct_elt (&temp
, NULL
, "methods",
913 VALUE_TYPE (temp
) = VALUE_TYPE (clas
);
914 el_type
= type_from_class (temp
);
915 if (TYPE_CODE (el_type
) == TYPE_CODE_STRUCT
)
916 el_type
= lookup_pointer_type (el_type
);
918 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
919 return value_zero (el_type
, VALUE_LVAL (arg1
));
920 address
= value_as_pointer (arg1
);
921 address
+= JAVA_OBJECT_SIZE
;
922 read_memory (address
, buf4
, 4);
923 length
= (long) extract_signed_integer (buf4
, 4);
924 index
= (long) value_as_long (arg2
);
925 if (index
>= length
|| index
< 0)
926 error ("array index (%ld) out of bounds (length: %ld)",
928 address
= (address
+ 4) + index
* TYPE_LENGTH (el_type
);
929 return value_at (el_type
, address
, NULL
);
931 else if (TYPE_CODE (type
) == TYPE_CODE_ARRAY
)
933 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
934 return value_zero (TYPE_TARGET_TYPE (type
), VALUE_LVAL (arg1
));
936 return value_subscript (arg1
, arg2
);
939 error ("cannot subscript something of type `%s'", name
);
941 error ("cannot subscript requested type");
945 i
= longest_to_int (exp
->elts
[pc
+ 1].longconst
);
946 (*pos
) += 3 + BYTES_TO_EXP_ELEM (i
+ 1);
947 if (noside
== EVAL_SKIP
)
949 return java_value_string (&exp
->elts
[pc
+ 2].string
, i
);
951 case STRUCTOP_STRUCT
:
952 arg1
= evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
953 /* Convert object field (such as TYPE.class) to reference. */
954 if (TYPE_CODE (VALUE_TYPE (arg1
)) == TYPE_CODE_STRUCT
)
955 arg1
= value_addr (arg1
);
961 return evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
963 return value_from_longest (builtin_type_long
, (LONGEST
) 1);
967 java_create_fundamental_type (objfile
, typeid)
968 struct objfile
*objfile
;
973 case FT_VOID
: return java_void_type
;
974 case FT_BOOLEAN
: return java_boolean_type
;
975 case FT_CHAR
: return java_char_type
;
976 case FT_FLOAT
: return java_float_type
;
977 case FT_DBL_PREC_FLOAT
: return java_double_type
;
978 case FT_BYTE
: case FT_SIGNED_CHAR
: return java_byte_type
;
979 case FT_SHORT
: case FT_SIGNED_SHORT
: return java_short_type
;
980 case FT_INTEGER
: case FT_SIGNED_INTEGER
: return java_int_type
;
981 case FT_LONG
: case FT_SIGNED_LONG
: return java_long_type
;
983 return c_create_fundamental_type (objfile
, typeid);
986 /* Table mapping opcodes into strings for printing operators
987 and precedences of the operators. */
989 const struct op_print java_op_print_tab
[] =
991 {",", BINOP_COMMA
, PREC_COMMA
, 0},
992 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
993 {"||", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
994 {"&&", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
995 {"|", BINOP_BITWISE_IOR
, PREC_BITWISE_IOR
, 0},
996 {"^", BINOP_BITWISE_XOR
, PREC_BITWISE_XOR
, 0},
997 {"&", BINOP_BITWISE_AND
, PREC_BITWISE_AND
, 0},
998 {"==", BINOP_EQUAL
, PREC_EQUAL
, 0},
999 {"!=", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
1000 {"<=", BINOP_LEQ
, PREC_ORDER
, 0},
1001 {">=", BINOP_GEQ
, PREC_ORDER
, 0},
1002 {">", BINOP_GTR
, PREC_ORDER
, 0},
1003 {"<", BINOP_LESS
, PREC_ORDER
, 0},
1004 {">>", BINOP_RSH
, PREC_SHIFT
, 0},
1005 {"<<", BINOP_LSH
, PREC_SHIFT
, 0},
1007 {">>>", BINOP_
???, PREC_SHIFT
, 0},
1009 {"+", BINOP_ADD
, PREC_ADD
, 0},
1010 {"-", BINOP_SUB
, PREC_ADD
, 0},
1011 {"*", BINOP_MUL
, PREC_MUL
, 0},
1012 {"/", BINOP_DIV
, PREC_MUL
, 0},
1013 {"%", BINOP_REM
, PREC_MUL
, 0},
1014 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
1015 {"!", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
1016 {"~", UNOP_COMPLEMENT
, PREC_PREFIX
, 0},
1017 {"*", UNOP_IND
, PREC_PREFIX
, 0},
1019 {"instanceof", ???, ???, 0},
1021 {"++", UNOP_PREINCREMENT
, PREC_PREFIX
, 0},
1022 {"--", UNOP_PREDECREMENT
, PREC_PREFIX
, 0},
1026 const struct language_defn java_language_defn
= {
1027 "java", /* Language name */
1034 evaluate_subexp_java
,
1035 c_printchar
, /* Print a character constant */
1036 c_printstr
, /* Function to print string constant */
1037 java_emit_char
, /* Function to print a single character */
1038 java_create_fundamental_type
, /* Create fundamental type in this language */
1039 java_print_type
, /* Print a type using appropriate syntax */
1040 java_val_print
, /* Print a value using appropriate syntax */
1041 java_value_print
, /* Print a top-level value */
1042 {"", "", "", ""}, /* Binary format info */
1043 {"0%lo", "0", "o", ""}, /* Octal format info */
1044 {"%ld", "", "d", ""}, /* Decimal format info */
1045 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1046 java_op_print_tab
, /* expression operators for printing */
1047 0, /* not c-style arrays */
1048 0, /* String lower bound */
1049 &builtin_type_char
, /* Type of string elements */
1054 _initialize_java_language ()
1057 java_int_type
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1058 java_short_type
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1059 java_long_type
= init_type (TYPE_CODE_INT
, 8, 0, "long", NULL
);
1060 java_byte_type
= init_type (TYPE_CODE_INT
, 1, 0, "byte", NULL
);
1061 java_boolean_type
= init_type (TYPE_CODE_BOOL
, 1, 0, "boolean", NULL
);
1062 java_char_type
= init_type (TYPE_CODE_CHAR
, 2, TYPE_FLAG_UNSIGNED
, "char", NULL
);
1063 java_float_type
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1064 java_double_type
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1065 java_void_type
= init_type (TYPE_CODE_VOID
, 1, 0, "void", NULL
);
1067 add_language (&java_language_defn
);
1070 /* Cleanup code that should be run on every "run".
1071 We should use make_run_cleanup to have this be called.
1072 But will that mess up values in value histry? FIXME */
1074 void java_rerun_cleanup ()
1076 if (class_symtab
!= NULL
)
1078 free_symtab (class_symtab
); /* ??? */
1079 class_symtab
= NULL
;
1081 if (dynamics_objfile
!= NULL
)
1083 free_objfile (dynamics_objfile
);
1084 dynamics_objfile
= NULL
;
1087 java_object_type
= NULL
;