1 /* Java language support routines for GDB, the GNU debugger.
2 Copyright 1997, 1998, 1999, 2000, 2003 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
24 #include "expression.h"
25 #include "parser-defs.h"
31 #include "gdb_string.h"
40 struct type
*java_int_type
;
41 struct type
*java_byte_type
;
42 struct type
*java_short_type
;
43 struct type
*java_long_type
;
44 struct type
*java_boolean_type
;
45 struct type
*java_char_type
;
46 struct type
*java_float_type
;
47 struct type
*java_double_type
;
48 struct type
*java_void_type
;
52 extern void _initialize_java_language (void);
54 static int java_demangled_signature_length (char *);
55 static void java_demangled_signature_copy (char *, char *);
57 static struct symtab
*get_java_class_symtab (void);
58 static char *get_java_utf8_name (struct obstack
*obstack
, struct value
*name
);
59 static int java_class_is_primitive (struct value
*clas
);
60 static struct type
*java_lookup_type (char *signature
);
61 static struct value
*java_value_string (char *ptr
, int len
);
63 static void java_emit_char (int c
, struct ui_file
* stream
, int quoter
);
65 /* This objfile contains symtabs that have been dynamically created
66 to record dynamically loaded Java classes and dynamically
67 compiled java methods. */
69 static struct objfile
*dynamics_objfile
= NULL
;
71 static struct type
*java_link_class_type (struct type
*, struct value
*);
73 /* FIXME: carlton/2003-02-04: This is the main or only caller of
74 allocate_objfile with first argument NULL; as a result, this code
75 breaks every so often. Somebody should write a test case that
76 exercises GDB in various ways (e.g. something involving loading a
77 dynamic library) after this code has been called. */
79 static struct objfile
*
80 get_dynamics_objfile (void)
82 if (dynamics_objfile
== NULL
)
84 dynamics_objfile
= allocate_objfile (NULL
, 0);
86 return dynamics_objfile
;
90 /* symtab contains classes read from the inferior. */
92 static struct symtab
*class_symtab
= NULL
;
94 /* Maximum number of class in class_symtab before relocation is needed. */
96 static int class_symtab_space
;
98 static struct symtab
*
99 get_java_class_symtab (void)
101 if (class_symtab
== NULL
)
103 struct objfile
*objfile
= get_dynamics_objfile ();
104 struct blockvector
*bv
;
106 class_symtab
= allocate_symtab ("<java-classes>", objfile
);
107 class_symtab
->language
= language_java
;
108 bv
= (struct blockvector
*)
109 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct blockvector
));
110 BLOCKVECTOR_NBLOCKS (bv
) = 1;
111 BLOCKVECTOR (class_symtab
) = bv
;
113 /* Allocate dummy STATIC_BLOCK. */
114 bl
= (struct block
*)
115 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct block
));
116 BLOCK_NSYMS (bl
) = 0;
117 BLOCK_HASHTABLE (bl
) = 0;
118 BLOCK_START (bl
) = 0;
120 BLOCK_FUNCTION (bl
) = NULL
;
121 BLOCK_SUPERBLOCK (bl
) = NULL
;
122 BLOCK_GCC_COMPILED (bl
) = 0;
123 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = bl
;
125 /* Allocate GLOBAL_BLOCK. This has to be relocatable. */
126 class_symtab_space
= 128;
127 bl
= xmmalloc (objfile
->md
,
128 sizeof (struct block
)
129 + ((class_symtab_space
- 1) * sizeof (struct symbol
*)));
130 *bl
= *BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
131 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
132 class_symtab
->free_ptr
= (char *) bl
;
138 add_class_symtab_symbol (struct symbol
*sym
)
140 struct symtab
*symtab
= get_java_class_symtab ();
141 struct blockvector
*bv
= BLOCKVECTOR (symtab
);
142 struct block
*bl
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
143 if (BLOCK_NSYMS (bl
) >= class_symtab_space
)
145 /* Need to re-allocate. */
146 class_symtab_space
*= 2;
147 bl
= xmrealloc (symtab
->objfile
->md
, bl
,
148 sizeof (struct block
)
149 + ((class_symtab_space
- 1) * sizeof (struct symbol
*)));
150 class_symtab
->free_ptr
= (char *) bl
;
151 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
154 BLOCK_SYM (bl
, BLOCK_NSYMS (bl
)) = sym
;
155 BLOCK_NSYMS (bl
) = BLOCK_NSYMS (bl
) + 1;
158 static struct symbol
*add_class_symbol (struct type
*type
, CORE_ADDR addr
);
160 static struct symbol
*
161 add_class_symbol (struct type
*type
, CORE_ADDR addr
)
164 sym
= (struct symbol
*)
165 obstack_alloc (&dynamics_objfile
->symbol_obstack
, sizeof (struct symbol
));
166 memset (sym
, 0, sizeof (struct symbol
));
167 SYMBOL_LANGUAGE (sym
) = language_java
;
168 DEPRECATED_SYMBOL_NAME (sym
) = TYPE_TAG_NAME (type
);
169 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
170 /* SYMBOL_VALUE (sym) = valu; */
171 SYMBOL_TYPE (sym
) = type
;
172 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
173 SYMBOL_VALUE_ADDRESS (sym
) = addr
;
179 java_lookup_class (char *name
)
182 sym
= lookup_symbol (name
, expression_context_block
, STRUCT_NAMESPACE
,
183 (int *) 0, (struct symtab
**) NULL
);
185 return SYMBOL_TYPE (sym
);
188 if (called from parser
)
190 call
lookup_class (or similar
) in inferior
;
194 addr
= found in inferior
;
199 type
= alloc_type (objfile
);
200 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
201 INIT_CPLUS_SPECIFIC (type
);
202 TYPE_TAG_NAME (type
) = obsavestring (name
, strlen (name
), &objfile
->type_obstack
);
203 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
207 /* FIXME - should search inferior's symbol table. */
212 /* Return a nul-terminated string (allocated on OBSTACK) for
213 a name given by NAME (which has type Utf8Const*). */
216 get_java_utf8_name (struct obstack
*obstack
, struct value
*name
)
219 struct value
*temp
= name
;
222 temp
= value_struct_elt (&temp
, NULL
, "length", NULL
, "structure");
223 name_length
= (int) value_as_long (temp
);
224 data_addr
= VALUE_ADDRESS (temp
) + VALUE_OFFSET (temp
)
225 + TYPE_LENGTH (VALUE_TYPE (temp
));
226 chrs
= obstack_alloc (obstack
, name_length
+ 1);
227 chrs
[name_length
] = '\0';
228 read_memory (data_addr
, chrs
, name_length
);
233 java_class_from_object (struct value
*obj_val
)
235 /* This is all rather inefficient, since the offsets of vtable and
236 class are fixed. FIXME */
237 struct value
*vtable_val
;
239 if (TYPE_CODE (VALUE_TYPE (obj_val
)) == TYPE_CODE_PTR
240 && TYPE_LENGTH (TYPE_TARGET_TYPE (VALUE_TYPE (obj_val
))) == 0)
241 obj_val
= value_at (get_java_object_type (),
242 value_as_address (obj_val
), NULL
);
244 vtable_val
= value_struct_elt (&obj_val
, NULL
, "vtable", NULL
, "structure");
245 return value_struct_elt (&vtable_val
, NULL
, "class", NULL
, "structure");
248 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
250 java_class_is_primitive (struct value
*clas
)
252 struct value
*vtable
= value_struct_elt (&clas
, NULL
, "vtable", NULL
, "struct");
253 CORE_ADDR i
= value_as_address (vtable
);
254 return (int) (i
& 0x7fffffff) == (int) 0x7fffffff;
257 /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
260 type_from_class (struct value
*clas
)
265 struct objfile
*objfile
;
266 struct value
*utf8_name
;
273 type
= check_typedef (VALUE_TYPE (clas
));
274 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
276 if (value_logical_not (clas
))
278 clas
= value_ind (clas
);
280 addr
= VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
);
283 get_java_class_symtab ();
284 bl
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab
), GLOBAL_BLOCK
);
285 for (i
= BLOCK_NSYMS (bl
); --i
>= 0;)
287 struct symbol
*sym
= BLOCK_SYM (bl
, i
);
288 if (SYMBOL_VALUE_ADDRESS (sym
) == addr
)
289 return SYMBOL_TYPE (sym
);
293 objfile
= get_dynamics_objfile ();
294 if (java_class_is_primitive (clas
))
298 sig
= value_struct_elt (&temp
, NULL
, "method_count", NULL
, "structure");
299 return java_primitive_type (value_as_long (sig
));
302 /* Get Class name. */
303 /* if clasloader non-null, prepend loader address. FIXME */
305 utf8_name
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
306 name
= get_java_utf8_name (&objfile
->type_obstack
, utf8_name
);
307 for (nptr
= name
; *nptr
!= 0; nptr
++)
313 type
= java_lookup_class (name
);
317 type
= alloc_type (objfile
);
318 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
319 INIT_CPLUS_SPECIFIC (type
);
323 char *signature
= name
;
324 int namelen
= java_demangled_signature_length (signature
);
325 if (namelen
> strlen (name
))
326 name
= obstack_alloc (&objfile
->type_obstack
, namelen
+ 1);
327 java_demangled_signature_copy (name
, signature
);
328 name
[namelen
] = '\0';
331 /* Set array element type. */
332 temp
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
333 VALUE_TYPE (temp
) = lookup_pointer_type (VALUE_TYPE (clas
));
334 TYPE_TARGET_TYPE (type
) = type_from_class (temp
);
337 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
338 TYPE_TAG_NAME (type
) = name
;
340 add_class_symtab_symbol (add_class_symbol (type
, addr
));
341 return java_link_class_type (type
, clas
);
344 /* Fill in class TYPE with data from the CLAS value. */
347 java_link_class_type (struct type
*type
, struct value
*clas
)
350 char *unqualified_name
;
351 char *name
= TYPE_TAG_NAME (type
);
352 int ninterfaces
, nfields
, nmethods
;
353 int type_is_object
= 0;
354 struct fn_field
*fn_fields
;
355 struct fn_fieldlist
*fn_fieldlists
;
356 struct value
*fields
;
357 struct value
*methods
;
358 struct value
*method
= NULL
;
359 struct value
*field
= NULL
;
361 struct objfile
*objfile
= get_dynamics_objfile ();
364 unqualified_name
= strrchr (name
, '.');
365 if (unqualified_name
== NULL
)
366 unqualified_name
= name
;
369 temp
= value_struct_elt (&temp
, NULL
, "superclass", NULL
, "structure");
370 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
372 tsuper
= get_java_object_type ();
373 if (tsuper
&& TYPE_CODE (tsuper
) == TYPE_CODE_PTR
)
374 tsuper
= TYPE_TARGET_TYPE (tsuper
);
378 tsuper
= type_from_class (temp
);
384 ninterfaces
= value_as_long (value_struct_elt (&temp
, NULL
, "interface_len", NULL
, "structure"));
386 TYPE_N_BASECLASSES (type
) = (tsuper
== NULL
? 0 : 1) + ninterfaces
;
388 nfields
= value_as_long (value_struct_elt (&temp
, NULL
, "field_count", NULL
, "structure"));
389 nfields
+= TYPE_N_BASECLASSES (type
);
390 nfields
++; /* Add one for dummy "class" field. */
391 TYPE_NFIELDS (type
) = nfields
;
392 TYPE_FIELDS (type
) = (struct field
*)
393 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
395 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
397 TYPE_FIELD_PRIVATE_BITS (type
) =
398 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
399 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
401 TYPE_FIELD_PROTECTED_BITS (type
) =
402 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
403 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
405 TYPE_FIELD_IGNORE_BITS (type
) =
406 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
407 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
409 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
410 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
411 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
415 TYPE_BASECLASS (type
, 0) = tsuper
;
417 SET_TYPE_FIELD_PRIVATE (type
, 0);
421 if (i
> 2 && name
[i
- 1] == ']' && tsuper
!= NULL
)
424 TYPE_LENGTH (type
) = TYPE_LENGTH (tsuper
) + 4; /* size with "length" */
429 temp
= value_struct_elt (&temp
, NULL
, "size_in_bytes", NULL
, "structure");
430 TYPE_LENGTH (type
) = value_as_long (temp
);
434 nfields
--; /* First set up dummy "class" field. */
435 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, nfields
),
436 VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
));
437 TYPE_FIELD_NAME (type
, nfields
) = "class";
438 TYPE_FIELD_TYPE (type
, nfields
) = VALUE_TYPE (clas
);
439 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
441 for (i
= TYPE_N_BASECLASSES (type
); i
< nfields
; i
++)
448 fields
= value_struct_elt (&temp
, NULL
, "fields", NULL
, "structure");
449 field
= value_ind (fields
);
452 { /* Re-use field value for next field. */
453 VALUE_ADDRESS (field
) += TYPE_LENGTH (VALUE_TYPE (field
));
454 VALUE_LAZY (field
) = 1;
457 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
458 TYPE_FIELD_NAME (type
, i
) =
459 get_java_utf8_name (&objfile
->type_obstack
, temp
);
461 accflags
= value_as_long (value_struct_elt (&temp
, NULL
, "accflags",
464 temp
= value_struct_elt (&temp
, NULL
, "info", NULL
, "structure");
465 boffset
= value_as_long (value_struct_elt (&temp
, NULL
, "boffset",
467 if (accflags
& 0x0001) /* public access */
471 if (accflags
& 0x0002) /* private access */
473 SET_TYPE_FIELD_PRIVATE (type
, i
);
475 if (accflags
& 0x0004) /* protected access */
477 SET_TYPE_FIELD_PROTECTED (type
, i
);
479 if (accflags
& 0x0008) /* ACC_STATIC */
480 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, i
), boffset
);
482 TYPE_FIELD_BITPOS (type
, i
) = 8 * boffset
;
483 if (accflags
& 0x8000) /* FIELD_UNRESOLVED_FLAG */
485 TYPE_FIELD_TYPE (type
, i
) = get_java_object_type (); /* FIXME */
491 temp
= value_struct_elt (&temp
, NULL
, "type", NULL
, "structure");
492 ftype
= type_from_class (temp
);
493 if (TYPE_CODE (ftype
) == TYPE_CODE_STRUCT
)
494 ftype
= lookup_pointer_type (ftype
);
495 TYPE_FIELD_TYPE (type
, i
) = ftype
;
500 nmethods
= value_as_long (value_struct_elt (&temp
, NULL
, "method_count",
502 TYPE_NFN_FIELDS_TOTAL (type
) = nmethods
;
503 j
= nmethods
* sizeof (struct fn_field
);
504 fn_fields
= (struct fn_field
*)
505 obstack_alloc (&dynamics_objfile
->symbol_obstack
, j
);
506 memset (fn_fields
, 0, j
);
507 fn_fieldlists
= (struct fn_fieldlist
*)
508 alloca (nmethods
* sizeof (struct fn_fieldlist
));
511 for (i
= 0; i
< nmethods
; i
++)
518 methods
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
519 method
= value_ind (methods
);
522 { /* Re-use method value for next method. */
523 VALUE_ADDRESS (method
) += TYPE_LENGTH (VALUE_TYPE (method
));
524 VALUE_LAZY (method
) = 1;
527 /* Get method name. */
529 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
530 mname
= get_java_utf8_name (&objfile
->type_obstack
, temp
);
531 if (strcmp (mname
, "<init>") == 0)
532 mname
= unqualified_name
;
534 /* Check for an existing method with the same name.
535 * This makes building the fn_fieldslists an O(nmethods**2)
536 * operation. That could be using hashing, but I doubt it
537 * is worth it. Note that we do maintain the order of methods
538 * in the inferior's Method table (as long as that is grouped
539 * by method name), which I think is desirable. --PB */
540 for (k
= 0, j
= TYPE_NFN_FIELDS (type
);;)
543 { /* No match - new method name. */
544 j
= TYPE_NFN_FIELDS (type
)++;
545 fn_fieldlists
[j
].name
= mname
;
546 fn_fieldlists
[j
].length
= 1;
547 fn_fieldlists
[j
].fn_fields
= &fn_fields
[i
];
551 if (strcmp (mname
, fn_fieldlists
[j
].name
) == 0)
552 { /* Found an existing method with the same name. */
554 if (mname
!= unqualified_name
)
555 obstack_free (&objfile
->type_obstack
, mname
);
556 mname
= fn_fieldlists
[j
].name
;
557 fn_fieldlists
[j
].length
++;
558 k
= i
- k
; /* Index of new slot. */
559 /* Shift intervening fn_fields (between k and i) down. */
560 for (l
= i
; l
> k
; l
--)
561 fn_fields
[l
] = fn_fields
[l
- 1];
562 for (l
= TYPE_NFN_FIELDS (type
); --l
> j
;)
563 fn_fieldlists
[l
].fn_fields
++;
566 k
+= fn_fieldlists
[j
].length
;
568 fn_fields
[k
].physname
= "";
569 fn_fields
[k
].is_stub
= 1;
570 fn_fields
[k
].type
= make_function_type (java_void_type
, NULL
); /* FIXME */
571 TYPE_CODE (fn_fields
[k
].type
) = TYPE_CODE_METHOD
;
574 j
= TYPE_NFN_FIELDS (type
) * sizeof (struct fn_fieldlist
);
575 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
576 obstack_alloc (&dynamics_objfile
->symbol_obstack
, j
);
577 memcpy (TYPE_FN_FIELDLISTS (type
), fn_fieldlists
, j
);
582 static struct type
*java_object_type
;
585 get_java_object_type (void)
587 if (java_object_type
== NULL
)
590 sym
= lookup_symbol ("java.lang.Object", NULL
, STRUCT_NAMESPACE
,
591 (int *) 0, (struct symtab
**) NULL
);
593 error ("cannot find java.lang.Object");
594 java_object_type
= SYMBOL_TYPE (sym
);
596 return java_object_type
;
600 get_java_object_header_size (void)
602 struct type
*objtype
= get_java_object_type ();
604 return (2 * TARGET_PTR_BIT
/ TARGET_CHAR_BIT
);
606 return TYPE_LENGTH (objtype
);
610 is_object_type (struct type
*type
)
612 CHECK_TYPEDEF (type
);
613 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
615 struct type
*ttype
= check_typedef (TYPE_TARGET_TYPE (type
));
617 if (TYPE_CODE (ttype
) != TYPE_CODE_STRUCT
)
619 while (TYPE_N_BASECLASSES (ttype
) > 0)
620 ttype
= TYPE_BASECLASS (ttype
, 0);
621 name
= TYPE_TAG_NAME (ttype
);
622 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
624 name
= TYPE_NFIELDS (ttype
) > 0 ? TYPE_FIELD_NAME (ttype
, 0) : (char *) 0;
625 if (name
!= NULL
&& strcmp (name
, "vtable") == 0)
627 if (java_object_type
== NULL
)
628 java_object_type
= type
;
636 java_primitive_type (int signature
)
641 return java_byte_type
;
643 return java_short_type
;
645 return java_int_type
;
647 return java_long_type
;
649 return java_boolean_type
;
651 return java_char_type
;
653 return java_float_type
;
655 return java_double_type
;
657 return java_void_type
;
659 error ("unknown signature '%c' for primitive type", (char) signature
);
662 /* If name[0 .. namelen-1] is the name of a primitive Java type,
663 return that type. Otherwise, return NULL. */
666 java_primitive_type_from_name (char *name
, int namelen
)
671 if (namelen
== 4 && memcmp (name
, "byte", 4) == 0)
672 return java_byte_type
;
673 if (namelen
== 7 && memcmp (name
, "boolean", 7) == 0)
674 return java_boolean_type
;
677 if (namelen
== 4 && memcmp (name
, "char", 4) == 0)
678 return java_char_type
;
680 if (namelen
== 6 && memcmp (name
, "double", 6) == 0)
681 return java_double_type
;
684 if (namelen
== 5 && memcmp (name
, "float", 5) == 0)
685 return java_float_type
;
688 if (namelen
== 3 && memcmp (name
, "int", 3) == 0)
689 return java_int_type
;
692 if (namelen
== 4 && memcmp (name
, "long", 4) == 0)
693 return java_long_type
;
696 if (namelen
== 5 && memcmp (name
, "short", 5) == 0)
697 return java_short_type
;
700 if (namelen
== 4 && memcmp (name
, "void", 4) == 0)
701 return java_void_type
;
707 /* Return the length (in bytes) of demangled name of the Java type
708 signature string SIGNATURE. */
711 java_demangled_signature_length (char *signature
)
714 for (; *signature
== '['; signature
++)
715 array
+= 2; /* Two chars for "[]". */
716 switch (signature
[0])
719 /* Subtract 2 for 'L' and ';'. */
720 return strlen (signature
) - 2 + array
;
722 return strlen (TYPE_NAME (java_primitive_type (signature
[0]))) + array
;
726 /* Demangle the Java type signature SIGNATURE, leaving the result in RESULT. */
729 java_demangled_signature_copy (char *result
, char *signature
)
734 while (*signature
== '[')
739 switch (signature
[0])
742 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
745 for (; *signature
!= ';' && *signature
!= '\0'; signature
++)
747 if (*signature
== '/')
754 ptr
= TYPE_NAME (java_primitive_type (signature
[0]));
756 strcpy (result
, ptr
);
767 /* Return the demangled name of the Java type signature string SIGNATURE,
768 as a freshly allocated copy. */
771 java_demangle_type_signature (char *signature
)
773 int length
= java_demangled_signature_length (signature
);
774 char *result
= xmalloc (length
+ 1);
775 java_demangled_signature_copy (result
, signature
);
776 result
[length
] = '\0';
781 java_lookup_type (char *signature
)
783 switch (signature
[0])
787 error ("java_lookup_type not fully implemented");
789 return java_primitive_type (signature
[0]);
793 /* Return the type of TYPE followed by DIMS pairs of [ ].
794 If DIMS == 0, TYPE is returned. */
797 java_array_type (struct type
*type
, int dims
)
799 struct type
*range_type
;
803 range_type
= create_range_type (NULL
, builtin_type_int
, 0, 0);
804 /* FIXME This is bogus! Java arrays are not gdb arrays! */
805 type
= create_array_type (NULL
, type
, range_type
);
811 /* Create a Java string in the inferior from a (Utf8) literal. */
813 static struct value
*
814 java_value_string (char *ptr
, int len
)
816 error ("not implemented - java_value_string"); /* FIXME */
819 /* Print the character C on STREAM as part of the contents of a literal
820 string whose delimiter is QUOTER. Note that that format for printing
821 characters and strings is language specific. */
824 java_emit_char (int c
, struct ui_file
*stream
, int quoter
)
830 fprintf_filtered (stream
, "\\%c", c
);
833 fputs_filtered ("\\b", stream
);
836 fputs_filtered ("\\t", stream
);
839 fputs_filtered ("\\n", stream
);
842 fputs_filtered ("\\f", stream
);
845 fputs_filtered ("\\r", stream
);
849 fputc_filtered (c
, stream
);
851 fprintf_filtered (stream
, "\\u%.4x", (unsigned int) c
);
856 static struct value
*
857 evaluate_subexp_java (struct type
*expect_type
, register struct expression
*exp
,
858 register int *pos
, enum noside noside
)
863 enum exp_opcode op
= exp
->elts
[*pos
].opcode
;
870 if (noside
== EVAL_SKIP
)
873 arg1
= evaluate_subexp_java (NULL_TYPE
, exp
, pos
, EVAL_NORMAL
);
874 if (is_object_type (VALUE_TYPE (arg1
)))
878 type
= type_from_class (java_class_from_object (arg1
));
879 arg1
= value_cast (lookup_pointer_type (type
), arg1
);
881 if (noside
== EVAL_SKIP
)
883 return value_ind (arg1
);
885 case BINOP_SUBSCRIPT
:
887 arg1
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
888 arg2
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
889 if (noside
== EVAL_SKIP
)
891 /* If the user attempts to subscript something that is not an
892 array or pointer type (like a plain int variable for example),
893 then report this as an error. */
896 type
= check_typedef (VALUE_TYPE (arg1
));
897 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
898 type
= check_typedef (TYPE_TARGET_TYPE (type
));
899 name
= TYPE_NAME (type
);
901 name
= TYPE_TAG_NAME (type
);
902 i
= name
== NULL
? 0 : strlen (name
);
903 if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
904 && i
> 2 && name
[i
- 1] == ']')
908 struct type
*el_type
;
911 struct value
*clas
= java_class_from_object (arg1
);
912 struct value
*temp
= clas
;
913 /* Get CLASS_ELEMENT_TYPE of the array type. */
914 temp
= value_struct_elt (&temp
, NULL
, "methods",
916 VALUE_TYPE (temp
) = VALUE_TYPE (clas
);
917 el_type
= type_from_class (temp
);
918 if (TYPE_CODE (el_type
) == TYPE_CODE_STRUCT
)
919 el_type
= lookup_pointer_type (el_type
);
921 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
922 return value_zero (el_type
, VALUE_LVAL (arg1
));
923 address
= value_as_address (arg1
);
924 address
+= JAVA_OBJECT_SIZE
;
925 read_memory (address
, buf4
, 4);
926 length
= (long) extract_signed_integer (buf4
, 4);
927 index
= (long) value_as_long (arg2
);
928 if (index
>= length
|| index
< 0)
929 error ("array index (%ld) out of bounds (length: %ld)",
931 address
= (address
+ 4) + index
* TYPE_LENGTH (el_type
);
932 return value_at (el_type
, address
, NULL
);
934 else if (TYPE_CODE (type
) == TYPE_CODE_ARRAY
)
936 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
937 return value_zero (TYPE_TARGET_TYPE (type
), VALUE_LVAL (arg1
));
939 return value_subscript (arg1
, arg2
);
942 error ("cannot subscript something of type `%s'", name
);
944 error ("cannot subscript requested type");
948 i
= longest_to_int (exp
->elts
[pc
+ 1].longconst
);
949 (*pos
) += 3 + BYTES_TO_EXP_ELEM (i
+ 1);
950 if (noside
== EVAL_SKIP
)
952 return java_value_string (&exp
->elts
[pc
+ 2].string
, i
);
954 case STRUCTOP_STRUCT
:
955 arg1
= evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
956 /* Convert object field (such as TYPE.class) to reference. */
957 if (TYPE_CODE (VALUE_TYPE (arg1
)) == TYPE_CODE_STRUCT
)
958 arg1
= value_addr (arg1
);
964 return evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
966 return value_from_longest (builtin_type_long
, (LONGEST
) 1);
970 java_create_fundamental_type (struct objfile
*objfile
, int typeid)
975 return java_void_type
;
977 return java_boolean_type
;
979 return java_char_type
;
981 return java_float_type
;
982 case FT_DBL_PREC_FLOAT
:
983 return java_double_type
;
986 return java_byte_type
;
988 case FT_SIGNED_SHORT
:
989 return java_short_type
;
991 case FT_SIGNED_INTEGER
:
992 return java_int_type
;
995 return java_long_type
;
997 return c_create_fundamental_type (objfile
, typeid);
1000 static char *java_demangle (const char *mangled
, int options
)
1002 return cplus_demangle (mangled
, options
| DMGL_JAVA
);
1006 /* Table mapping opcodes into strings for printing operators
1007 and precedences of the operators. */
1009 const struct op_print java_op_print_tab
[] =
1011 {",", BINOP_COMMA
, PREC_COMMA
, 0},
1012 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
1013 {"||", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
1014 {"&&", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
1015 {"|", BINOP_BITWISE_IOR
, PREC_BITWISE_IOR
, 0},
1016 {"^", BINOP_BITWISE_XOR
, PREC_BITWISE_XOR
, 0},
1017 {"&", BINOP_BITWISE_AND
, PREC_BITWISE_AND
, 0},
1018 {"==", BINOP_EQUAL
, PREC_EQUAL
, 0},
1019 {"!=", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
1020 {"<=", BINOP_LEQ
, PREC_ORDER
, 0},
1021 {">=", BINOP_GEQ
, PREC_ORDER
, 0},
1022 {">", BINOP_GTR
, PREC_ORDER
, 0},
1023 {"<", BINOP_LESS
, PREC_ORDER
, 0},
1024 {">>", BINOP_RSH
, PREC_SHIFT
, 0},
1025 {"<<", BINOP_LSH
, PREC_SHIFT
, 0},
1027 {">>>", BINOP_
? ? ?, PREC_SHIFT
, 0},
1029 {"+", BINOP_ADD
, PREC_ADD
, 0},
1030 {"-", BINOP_SUB
, PREC_ADD
, 0},
1031 {"*", BINOP_MUL
, PREC_MUL
, 0},
1032 {"/", BINOP_DIV
, PREC_MUL
, 0},
1033 {"%", BINOP_REM
, PREC_MUL
, 0},
1034 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
1035 {"!", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
1036 {"~", UNOP_COMPLEMENT
, PREC_PREFIX
, 0},
1037 {"*", UNOP_IND
, PREC_PREFIX
, 0},
1039 {"instanceof", ? ? ?, ? ? ?, 0},
1041 {"++", UNOP_PREINCREMENT
, PREC_PREFIX
, 0},
1042 {"--", UNOP_PREDECREMENT
, PREC_PREFIX
, 0},
1046 const struct language_defn java_language_defn
=
1048 "java", /* Language name */
1056 evaluate_subexp_java
,
1057 c_printchar
, /* Print a character constant */
1058 c_printstr
, /* Function to print string constant */
1059 java_emit_char
, /* Function to print a single character */
1060 java_create_fundamental_type
, /* Create fundamental type in this language */
1061 java_print_type
, /* Print a type using appropriate syntax */
1062 java_val_print
, /* Print a value using appropriate syntax */
1063 java_value_print
, /* Print a top-level value */
1064 NULL
, /* Language specific skip_trampoline */
1065 java_demangle
, /* Language specific symbol demangler */
1066 {"", "", "", ""}, /* Binary format info */
1067 {"0%lo", "0", "o", ""}, /* Octal format info */
1068 {"%ld", "", "d", ""}, /* Decimal format info */
1069 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1070 java_op_print_tab
, /* expression operators for printing */
1071 0, /* not c-style arrays */
1072 0, /* String lower bound */
1073 &builtin_type_char
, /* Type of string elements */
1078 _initialize_java_language (void)
1081 java_int_type
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1082 java_short_type
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1083 java_long_type
= init_type (TYPE_CODE_INT
, 8, 0, "long", NULL
);
1084 java_byte_type
= init_type (TYPE_CODE_INT
, 1, 0, "byte", NULL
);
1085 java_boolean_type
= init_type (TYPE_CODE_BOOL
, 1, 0, "boolean", NULL
);
1086 java_char_type
= init_type (TYPE_CODE_CHAR
, 2, TYPE_FLAG_UNSIGNED
, "char", NULL
);
1087 java_float_type
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1088 java_double_type
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1089 java_void_type
= init_type (TYPE_CODE_VOID
, 1, 0, "void", NULL
);
1091 add_language (&java_language_defn
);
1094 /* Cleanup code that should be run on every "run".
1095 We should use make_run_cleanup to have this be called.
1096 But will that mess up values in value histry? FIXME */
1098 extern void java_rerun_cleanup (void);
1100 java_rerun_cleanup (void)
1102 if (class_symtab
!= NULL
)
1104 free_symtab (class_symtab
); /* ??? */
1105 class_symtab
= NULL
;
1107 if (dynamics_objfile
!= NULL
)
1109 free_objfile (dynamics_objfile
);
1110 dynamics_objfile
= NULL
;
1113 java_object_type
= NULL
;