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"
38 #include "dictionary.h"
41 struct type
*java_int_type
;
42 struct type
*java_byte_type
;
43 struct type
*java_short_type
;
44 struct type
*java_long_type
;
45 struct type
*java_boolean_type
;
46 struct type
*java_char_type
;
47 struct type
*java_float_type
;
48 struct type
*java_double_type
;
49 struct type
*java_void_type
;
53 extern void _initialize_java_language (void);
55 static int java_demangled_signature_length (char *);
56 static void java_demangled_signature_copy (char *, char *);
58 static struct symtab
*get_java_class_symtab (void);
59 static char *get_java_utf8_name (struct obstack
*obstack
, struct value
*name
);
60 static int java_class_is_primitive (struct value
*clas
);
61 static struct type
*java_lookup_type (char *signature
);
62 static struct value
*java_value_string (char *ptr
, int len
);
64 static void java_emit_char (int c
, struct ui_file
* stream
, int quoter
);
66 /* This objfile contains symtabs that have been dynamically created
67 to record dynamically loaded Java classes and dynamically
68 compiled java methods. */
70 static struct objfile
*dynamics_objfile
= NULL
;
72 static struct type
*java_link_class_type (struct type
*, struct value
*);
74 /* FIXME: carlton/2003-02-04: This is the main or only caller of
75 allocate_objfile with first argument NULL; as a result, this code
76 breaks every so often. Somebody should write a test case that
77 exercises GDB in various ways (e.g. something involving loading a
78 dynamic library) after this code has been called. */
80 static struct objfile
*
81 get_dynamics_objfile (void)
83 if (dynamics_objfile
== NULL
)
85 dynamics_objfile
= allocate_objfile (NULL
, 0);
87 return dynamics_objfile
;
91 /* symtab contains classes read from the inferior. */
93 static struct symtab
*class_symtab
= NULL
;
95 static void free_class_block (struct symtab
*symtab
);
97 static struct symtab
*
98 get_java_class_symtab (void)
100 if (class_symtab
== NULL
)
102 struct objfile
*objfile
= get_dynamics_objfile ();
103 struct blockvector
*bv
;
105 class_symtab
= allocate_symtab ("<java-classes>", objfile
);
106 class_symtab
->language
= language_java
;
107 bv
= (struct blockvector
*)
108 obstack_alloc (&objfile
->symbol_obstack
,
109 sizeof (struct blockvector
) + sizeof (struct block
*));
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_DICT (bl
) = dict_create_linear (&objfile
->symbol_obstack
,
118 BLOCK_START (bl
) = 0;
120 BLOCK_FUNCTION (bl
) = NULL
;
121 BLOCK_SUPERBLOCK (bl
) = NULL
;
122 BLOCK_NAMESPACE (bl
) = NULL
;
123 BLOCK_GCC_COMPILED (bl
) = 0;
124 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = bl
;
126 /* Allocate GLOBAL_BLOCK. This has to be relocatable. */
127 bl
= (struct block
*)
128 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct block
));
129 *bl
= *BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
130 BLOCK_DICT (bl
) = dict_create_hashed_expandable ();
131 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
132 class_symtab
->free_func
= free_class_block
;
138 add_class_symtab_symbol (struct symbol
*sym
)
140 struct symtab
*symtab
= get_java_class_symtab ();
141 struct blockvector
*bv
= BLOCKVECTOR (symtab
);
142 dict_add_symbol (BLOCK_DICT (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)), sym
);
145 static struct symbol
*add_class_symbol (struct type
*type
, CORE_ADDR addr
);
147 static struct symbol
*
148 add_class_symbol (struct type
*type
, CORE_ADDR addr
)
151 sym
= (struct symbol
*)
152 obstack_alloc (&dynamics_objfile
->symbol_obstack
, sizeof (struct symbol
));
153 memset (sym
, 0, sizeof (struct symbol
));
154 SYMBOL_LANGUAGE (sym
) = language_java
;
155 DEPRECATED_SYMBOL_NAME (sym
) = TYPE_TAG_NAME (type
);
156 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
157 /* SYMBOL_VALUE (sym) = valu; */
158 SYMBOL_TYPE (sym
) = type
;
159 SYMBOL_DOMAIN (sym
) = STRUCT_DOMAIN
;
160 SYMBOL_VALUE_ADDRESS (sym
) = addr
;
164 /* Free the dynamic symbols block. */
166 free_class_block (struct symtab
*symtab
)
168 struct blockvector
*bv
= BLOCKVECTOR (symtab
);
169 struct block
*bl
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
171 dict_free (BLOCK_DICT (bl
));
176 java_lookup_class (char *name
)
179 sym
= lookup_symbol (name
, expression_context_block
, STRUCT_DOMAIN
,
180 (int *) 0, (struct symtab
**) NULL
);
182 return SYMBOL_TYPE (sym
);
185 if (called from parser
)
187 call
lookup_class (or similar
) in inferior
;
191 addr
= found in inferior
;
196 type
= alloc_type (objfile
);
197 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
198 INIT_CPLUS_SPECIFIC (type
);
199 TYPE_TAG_NAME (type
) = obsavestring (name
, strlen (name
), &objfile
->type_obstack
);
200 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
204 /* FIXME - should search inferior's symbol table. */
209 /* Return a nul-terminated string (allocated on OBSTACK) for
210 a name given by NAME (which has type Utf8Const*). */
213 get_java_utf8_name (struct obstack
*obstack
, struct value
*name
)
216 struct value
*temp
= name
;
219 temp
= value_struct_elt (&temp
, NULL
, "length", NULL
, "structure");
220 name_length
= (int) value_as_long (temp
);
221 data_addr
= VALUE_ADDRESS (temp
) + VALUE_OFFSET (temp
)
222 + TYPE_LENGTH (VALUE_TYPE (temp
));
223 chrs
= obstack_alloc (obstack
, name_length
+ 1);
224 chrs
[name_length
] = '\0';
225 read_memory (data_addr
, chrs
, name_length
);
230 java_class_from_object (struct value
*obj_val
)
232 /* This is all rather inefficient, since the offsets of vtable and
233 class are fixed. FIXME */
234 struct value
*vtable_val
;
236 if (TYPE_CODE (VALUE_TYPE (obj_val
)) == TYPE_CODE_PTR
237 && TYPE_LENGTH (TYPE_TARGET_TYPE (VALUE_TYPE (obj_val
))) == 0)
238 obj_val
= value_at (get_java_object_type (),
239 value_as_address (obj_val
), NULL
);
241 vtable_val
= value_struct_elt (&obj_val
, NULL
, "vtable", NULL
, "structure");
242 return value_struct_elt (&vtable_val
, NULL
, "class", NULL
, "structure");
245 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
247 java_class_is_primitive (struct value
*clas
)
249 struct value
*vtable
= value_struct_elt (&clas
, NULL
, "vtable", NULL
, "struct");
250 CORE_ADDR i
= value_as_address (vtable
);
251 return (int) (i
& 0x7fffffff) == (int) 0x7fffffff;
254 /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
257 type_from_class (struct value
*clas
)
262 struct objfile
*objfile
;
263 struct value
*utf8_name
;
267 struct dict_iterator iter
;
270 type
= check_typedef (VALUE_TYPE (clas
));
271 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
273 if (value_logical_not (clas
))
275 clas
= value_ind (clas
);
277 addr
= VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
);
280 get_java_class_symtab ();
281 bl
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab
), GLOBAL_BLOCK
);
282 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
284 if (SYMBOL_VALUE_ADDRESS (sym
) == addr
)
285 return SYMBOL_TYPE (sym
);
289 objfile
= get_dynamics_objfile ();
290 if (java_class_is_primitive (clas
))
294 sig
= value_struct_elt (&temp
, NULL
, "method_count", NULL
, "structure");
295 return java_primitive_type (value_as_long (sig
));
298 /* Get Class name. */
299 /* if clasloader non-null, prepend loader address. FIXME */
301 utf8_name
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
302 name
= get_java_utf8_name (&objfile
->type_obstack
, utf8_name
);
303 for (nptr
= name
; *nptr
!= 0; nptr
++)
309 type
= java_lookup_class (name
);
313 type
= alloc_type (objfile
);
314 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
315 INIT_CPLUS_SPECIFIC (type
);
319 char *signature
= name
;
320 int namelen
= java_demangled_signature_length (signature
);
321 if (namelen
> strlen (name
))
322 name
= obstack_alloc (&objfile
->type_obstack
, namelen
+ 1);
323 java_demangled_signature_copy (name
, signature
);
324 name
[namelen
] = '\0';
327 /* Set array element type. */
328 temp
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
329 VALUE_TYPE (temp
) = lookup_pointer_type (VALUE_TYPE (clas
));
330 TYPE_TARGET_TYPE (type
) = type_from_class (temp
);
333 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
334 TYPE_TAG_NAME (type
) = name
;
336 add_class_symtab_symbol (add_class_symbol (type
, addr
));
337 return java_link_class_type (type
, clas
);
340 /* Fill in class TYPE with data from the CLAS value. */
343 java_link_class_type (struct type
*type
, struct value
*clas
)
346 char *unqualified_name
;
347 char *name
= TYPE_TAG_NAME (type
);
348 int ninterfaces
, nfields
, nmethods
;
349 int type_is_object
= 0;
350 struct fn_field
*fn_fields
;
351 struct fn_fieldlist
*fn_fieldlists
;
352 struct value
*fields
;
353 struct value
*methods
;
354 struct value
*method
= NULL
;
355 struct value
*field
= NULL
;
357 struct objfile
*objfile
= get_dynamics_objfile ();
360 unqualified_name
= strrchr (name
, '.');
361 if (unqualified_name
== NULL
)
362 unqualified_name
= name
;
365 temp
= value_struct_elt (&temp
, NULL
, "superclass", NULL
, "structure");
366 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
368 tsuper
= get_java_object_type ();
369 if (tsuper
&& TYPE_CODE (tsuper
) == TYPE_CODE_PTR
)
370 tsuper
= TYPE_TARGET_TYPE (tsuper
);
374 tsuper
= type_from_class (temp
);
380 ninterfaces
= value_as_long (value_struct_elt (&temp
, NULL
, "interface_len", NULL
, "structure"));
382 TYPE_N_BASECLASSES (type
) = (tsuper
== NULL
? 0 : 1) + ninterfaces
;
384 nfields
= value_as_long (value_struct_elt (&temp
, NULL
, "field_count", NULL
, "structure"));
385 nfields
+= TYPE_N_BASECLASSES (type
);
386 nfields
++; /* Add one for dummy "class" field. */
387 TYPE_NFIELDS (type
) = nfields
;
388 TYPE_FIELDS (type
) = (struct field
*)
389 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
391 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
393 TYPE_FIELD_PRIVATE_BITS (type
) =
394 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
395 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
397 TYPE_FIELD_PROTECTED_BITS (type
) =
398 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
399 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
401 TYPE_FIELD_IGNORE_BITS (type
) =
402 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
403 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
405 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
406 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
407 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
411 TYPE_BASECLASS (type
, 0) = tsuper
;
413 SET_TYPE_FIELD_PRIVATE (type
, 0);
417 if (i
> 2 && name
[i
- 1] == ']' && tsuper
!= NULL
)
420 TYPE_LENGTH (type
) = TYPE_LENGTH (tsuper
) + 4; /* size with "length" */
425 temp
= value_struct_elt (&temp
, NULL
, "size_in_bytes", NULL
, "structure");
426 TYPE_LENGTH (type
) = value_as_long (temp
);
430 nfields
--; /* First set up dummy "class" field. */
431 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, nfields
),
432 VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
));
433 TYPE_FIELD_NAME (type
, nfields
) = "class";
434 TYPE_FIELD_TYPE (type
, nfields
) = VALUE_TYPE (clas
);
435 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
437 for (i
= TYPE_N_BASECLASSES (type
); i
< nfields
; i
++)
444 fields
= value_struct_elt (&temp
, NULL
, "fields", NULL
, "structure");
445 field
= value_ind (fields
);
448 { /* Re-use field value for next field. */
449 VALUE_ADDRESS (field
) += TYPE_LENGTH (VALUE_TYPE (field
));
450 VALUE_LAZY (field
) = 1;
453 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
454 TYPE_FIELD_NAME (type
, i
) =
455 get_java_utf8_name (&objfile
->type_obstack
, temp
);
457 accflags
= value_as_long (value_struct_elt (&temp
, NULL
, "accflags",
460 temp
= value_struct_elt (&temp
, NULL
, "info", NULL
, "structure");
461 boffset
= value_as_long (value_struct_elt (&temp
, NULL
, "boffset",
463 if (accflags
& 0x0001) /* public access */
467 if (accflags
& 0x0002) /* private access */
469 SET_TYPE_FIELD_PRIVATE (type
, i
);
471 if (accflags
& 0x0004) /* protected access */
473 SET_TYPE_FIELD_PROTECTED (type
, i
);
475 if (accflags
& 0x0008) /* ACC_STATIC */
476 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, i
), boffset
);
478 TYPE_FIELD_BITPOS (type
, i
) = 8 * boffset
;
479 if (accflags
& 0x8000) /* FIELD_UNRESOLVED_FLAG */
481 TYPE_FIELD_TYPE (type
, i
) = get_java_object_type (); /* FIXME */
487 temp
= value_struct_elt (&temp
, NULL
, "type", NULL
, "structure");
488 ftype
= type_from_class (temp
);
489 if (TYPE_CODE (ftype
) == TYPE_CODE_STRUCT
)
490 ftype
= lookup_pointer_type (ftype
);
491 TYPE_FIELD_TYPE (type
, i
) = ftype
;
496 nmethods
= value_as_long (value_struct_elt (&temp
, NULL
, "method_count",
498 TYPE_NFN_FIELDS_TOTAL (type
) = nmethods
;
499 j
= nmethods
* sizeof (struct fn_field
);
500 fn_fields
= (struct fn_field
*)
501 obstack_alloc (&dynamics_objfile
->symbol_obstack
, j
);
502 memset (fn_fields
, 0, j
);
503 fn_fieldlists
= (struct fn_fieldlist
*)
504 alloca (nmethods
* sizeof (struct fn_fieldlist
));
507 for (i
= 0; i
< nmethods
; i
++)
514 methods
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
515 method
= value_ind (methods
);
518 { /* Re-use method value for next method. */
519 VALUE_ADDRESS (method
) += TYPE_LENGTH (VALUE_TYPE (method
));
520 VALUE_LAZY (method
) = 1;
523 /* Get method name. */
525 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
526 mname
= get_java_utf8_name (&objfile
->type_obstack
, temp
);
527 if (strcmp (mname
, "<init>") == 0)
528 mname
= unqualified_name
;
530 /* Check for an existing method with the same name.
531 * This makes building the fn_fieldslists an O(nmethods**2)
532 * operation. That could be using hashing, but I doubt it
533 * is worth it. Note that we do maintain the order of methods
534 * in the inferior's Method table (as long as that is grouped
535 * by method name), which I think is desirable. --PB */
536 for (k
= 0, j
= TYPE_NFN_FIELDS (type
);;)
539 { /* No match - new method name. */
540 j
= TYPE_NFN_FIELDS (type
)++;
541 fn_fieldlists
[j
].name
= mname
;
542 fn_fieldlists
[j
].length
= 1;
543 fn_fieldlists
[j
].fn_fields
= &fn_fields
[i
];
547 if (strcmp (mname
, fn_fieldlists
[j
].name
) == 0)
548 { /* Found an existing method with the same name. */
550 if (mname
!= unqualified_name
)
551 obstack_free (&objfile
->type_obstack
, mname
);
552 mname
= fn_fieldlists
[j
].name
;
553 fn_fieldlists
[j
].length
++;
554 k
= i
- k
; /* Index of new slot. */
555 /* Shift intervening fn_fields (between k and i) down. */
556 for (l
= i
; l
> k
; l
--)
557 fn_fields
[l
] = fn_fields
[l
- 1];
558 for (l
= TYPE_NFN_FIELDS (type
); --l
> j
;)
559 fn_fieldlists
[l
].fn_fields
++;
562 k
+= fn_fieldlists
[j
].length
;
564 fn_fields
[k
].physname
= "";
565 fn_fields
[k
].is_stub
= 1;
566 fn_fields
[k
].type
= make_function_type (java_void_type
, NULL
); /* FIXME */
567 TYPE_CODE (fn_fields
[k
].type
) = TYPE_CODE_METHOD
;
570 j
= TYPE_NFN_FIELDS (type
) * sizeof (struct fn_fieldlist
);
571 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
572 obstack_alloc (&dynamics_objfile
->symbol_obstack
, j
);
573 memcpy (TYPE_FN_FIELDLISTS (type
), fn_fieldlists
, j
);
578 static struct type
*java_object_type
;
581 get_java_object_type (void)
583 if (java_object_type
== NULL
)
586 sym
= lookup_symbol ("java.lang.Object", NULL
, STRUCT_DOMAIN
,
587 (int *) 0, (struct symtab
**) NULL
);
589 error ("cannot find java.lang.Object");
590 java_object_type
= SYMBOL_TYPE (sym
);
592 return java_object_type
;
596 get_java_object_header_size (void)
598 struct type
*objtype
= get_java_object_type ();
600 return (2 * TARGET_PTR_BIT
/ TARGET_CHAR_BIT
);
602 return TYPE_LENGTH (objtype
);
606 is_object_type (struct type
*type
)
608 CHECK_TYPEDEF (type
);
609 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
611 struct type
*ttype
= check_typedef (TYPE_TARGET_TYPE (type
));
613 if (TYPE_CODE (ttype
) != TYPE_CODE_STRUCT
)
615 while (TYPE_N_BASECLASSES (ttype
) > 0)
616 ttype
= TYPE_BASECLASS (ttype
, 0);
617 name
= TYPE_TAG_NAME (ttype
);
618 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
620 name
= TYPE_NFIELDS (ttype
) > 0 ? TYPE_FIELD_NAME (ttype
, 0) : (char *) 0;
621 if (name
!= NULL
&& strcmp (name
, "vtable") == 0)
623 if (java_object_type
== NULL
)
624 java_object_type
= type
;
632 java_primitive_type (int signature
)
637 return java_byte_type
;
639 return java_short_type
;
641 return java_int_type
;
643 return java_long_type
;
645 return java_boolean_type
;
647 return java_char_type
;
649 return java_float_type
;
651 return java_double_type
;
653 return java_void_type
;
655 error ("unknown signature '%c' for primitive type", (char) signature
);
658 /* If name[0 .. namelen-1] is the name of a primitive Java type,
659 return that type. Otherwise, return NULL. */
662 java_primitive_type_from_name (char *name
, int namelen
)
667 if (namelen
== 4 && memcmp (name
, "byte", 4) == 0)
668 return java_byte_type
;
669 if (namelen
== 7 && memcmp (name
, "boolean", 7) == 0)
670 return java_boolean_type
;
673 if (namelen
== 4 && memcmp (name
, "char", 4) == 0)
674 return java_char_type
;
676 if (namelen
== 6 && memcmp (name
, "double", 6) == 0)
677 return java_double_type
;
680 if (namelen
== 5 && memcmp (name
, "float", 5) == 0)
681 return java_float_type
;
684 if (namelen
== 3 && memcmp (name
, "int", 3) == 0)
685 return java_int_type
;
688 if (namelen
== 4 && memcmp (name
, "long", 4) == 0)
689 return java_long_type
;
692 if (namelen
== 5 && memcmp (name
, "short", 5) == 0)
693 return java_short_type
;
696 if (namelen
== 4 && memcmp (name
, "void", 4) == 0)
697 return java_void_type
;
703 /* Return the length (in bytes) of demangled name of the Java type
704 signature string SIGNATURE. */
707 java_demangled_signature_length (char *signature
)
710 for (; *signature
== '['; signature
++)
711 array
+= 2; /* Two chars for "[]". */
712 switch (signature
[0])
715 /* Subtract 2 for 'L' and ';'. */
716 return strlen (signature
) - 2 + array
;
718 return strlen (TYPE_NAME (java_primitive_type (signature
[0]))) + array
;
722 /* Demangle the Java type signature SIGNATURE, leaving the result in RESULT. */
725 java_demangled_signature_copy (char *result
, char *signature
)
730 while (*signature
== '[')
735 switch (signature
[0])
738 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
741 for (; *signature
!= ';' && *signature
!= '\0'; signature
++)
743 if (*signature
== '/')
750 ptr
= TYPE_NAME (java_primitive_type (signature
[0]));
752 strcpy (result
, ptr
);
763 /* Return the demangled name of the Java type signature string SIGNATURE,
764 as a freshly allocated copy. */
767 java_demangle_type_signature (char *signature
)
769 int length
= java_demangled_signature_length (signature
);
770 char *result
= xmalloc (length
+ 1);
771 java_demangled_signature_copy (result
, signature
);
772 result
[length
] = '\0';
777 java_lookup_type (char *signature
)
779 switch (signature
[0])
783 error ("java_lookup_type not fully implemented");
785 return java_primitive_type (signature
[0]);
789 /* Return the type of TYPE followed by DIMS pairs of [ ].
790 If DIMS == 0, TYPE is returned. */
793 java_array_type (struct type
*type
, int dims
)
795 struct type
*range_type
;
799 range_type
= create_range_type (NULL
, builtin_type_int
, 0, 0);
800 /* FIXME This is bogus! Java arrays are not gdb arrays! */
801 type
= create_array_type (NULL
, type
, range_type
);
807 /* Create a Java string in the inferior from a (Utf8) literal. */
809 static struct value
*
810 java_value_string (char *ptr
, int len
)
812 error ("not implemented - java_value_string"); /* FIXME */
815 /* Print the character C on STREAM as part of the contents of a literal
816 string whose delimiter is QUOTER. Note that that format for printing
817 characters and strings is language specific. */
820 java_emit_char (int c
, struct ui_file
*stream
, int quoter
)
826 fprintf_filtered (stream
, "\\%c", c
);
829 fputs_filtered ("\\b", stream
);
832 fputs_filtered ("\\t", stream
);
835 fputs_filtered ("\\n", stream
);
838 fputs_filtered ("\\f", stream
);
841 fputs_filtered ("\\r", stream
);
845 fputc_filtered (c
, stream
);
847 fprintf_filtered (stream
, "\\u%.4x", (unsigned int) c
);
852 static struct value
*
853 evaluate_subexp_java (struct type
*expect_type
, register struct expression
*exp
,
854 register int *pos
, enum noside noside
)
859 enum exp_opcode op
= exp
->elts
[*pos
].opcode
;
866 if (noside
== EVAL_SKIP
)
869 arg1
= evaluate_subexp_java (NULL_TYPE
, exp
, pos
, EVAL_NORMAL
);
870 if (is_object_type (VALUE_TYPE (arg1
)))
874 type
= type_from_class (java_class_from_object (arg1
));
875 arg1
= value_cast (lookup_pointer_type (type
), arg1
);
877 if (noside
== EVAL_SKIP
)
879 return value_ind (arg1
);
881 case BINOP_SUBSCRIPT
:
883 arg1
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
884 arg2
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
885 if (noside
== EVAL_SKIP
)
887 /* If the user attempts to subscript something that is not an
888 array or pointer type (like a plain int variable for example),
889 then report this as an error. */
892 type
= check_typedef (VALUE_TYPE (arg1
));
893 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
894 type
= check_typedef (TYPE_TARGET_TYPE (type
));
895 name
= TYPE_NAME (type
);
897 name
= TYPE_TAG_NAME (type
);
898 i
= name
== NULL
? 0 : strlen (name
);
899 if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
900 && i
> 2 && name
[i
- 1] == ']')
904 struct type
*el_type
;
907 struct value
*clas
= java_class_from_object (arg1
);
908 struct value
*temp
= clas
;
909 /* Get CLASS_ELEMENT_TYPE of the array type. */
910 temp
= value_struct_elt (&temp
, NULL
, "methods",
912 VALUE_TYPE (temp
) = VALUE_TYPE (clas
);
913 el_type
= type_from_class (temp
);
914 if (TYPE_CODE (el_type
) == TYPE_CODE_STRUCT
)
915 el_type
= lookup_pointer_type (el_type
);
917 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
918 return value_zero (el_type
, VALUE_LVAL (arg1
));
919 address
= value_as_address (arg1
);
920 address
+= JAVA_OBJECT_SIZE
;
921 read_memory (address
, buf4
, 4);
922 length
= (long) extract_signed_integer (buf4
, 4);
923 index
= (long) value_as_long (arg2
);
924 if (index
>= length
|| index
< 0)
925 error ("array index (%ld) out of bounds (length: %ld)",
927 address
= (address
+ 4) + index
* TYPE_LENGTH (el_type
);
928 return value_at (el_type
, address
, NULL
);
930 else if (TYPE_CODE (type
) == TYPE_CODE_ARRAY
)
932 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
933 return value_zero (TYPE_TARGET_TYPE (type
), VALUE_LVAL (arg1
));
935 return value_subscript (arg1
, arg2
);
938 error ("cannot subscript something of type `%s'", name
);
940 error ("cannot subscript requested type");
944 i
= longest_to_int (exp
->elts
[pc
+ 1].longconst
);
945 (*pos
) += 3 + BYTES_TO_EXP_ELEM (i
+ 1);
946 if (noside
== EVAL_SKIP
)
948 return java_value_string (&exp
->elts
[pc
+ 2].string
, i
);
950 case STRUCTOP_STRUCT
:
951 arg1
= evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
952 /* Convert object field (such as TYPE.class) to reference. */
953 if (TYPE_CODE (VALUE_TYPE (arg1
)) == TYPE_CODE_STRUCT
)
954 arg1
= value_addr (arg1
);
960 return evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
962 return value_from_longest (builtin_type_long
, (LONGEST
) 1);
966 java_create_fundamental_type (struct objfile
*objfile
, int typeid)
971 return java_void_type
;
973 return java_boolean_type
;
975 return java_char_type
;
977 return java_float_type
;
978 case FT_DBL_PREC_FLOAT
:
979 return java_double_type
;
982 return java_byte_type
;
984 case FT_SIGNED_SHORT
:
985 return java_short_type
;
987 case FT_SIGNED_INTEGER
:
988 return java_int_type
;
991 return java_long_type
;
993 return c_create_fundamental_type (objfile
, typeid);
996 static char *java_demangle (const char *mangled
, int options
)
998 return cplus_demangle (mangled
, options
| DMGL_JAVA
);
1002 /* Table mapping opcodes into strings for printing operators
1003 and precedences of the operators. */
1005 const struct op_print java_op_print_tab
[] =
1007 {",", BINOP_COMMA
, PREC_COMMA
, 0},
1008 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
1009 {"||", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
1010 {"&&", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
1011 {"|", BINOP_BITWISE_IOR
, PREC_BITWISE_IOR
, 0},
1012 {"^", BINOP_BITWISE_XOR
, PREC_BITWISE_XOR
, 0},
1013 {"&", BINOP_BITWISE_AND
, PREC_BITWISE_AND
, 0},
1014 {"==", BINOP_EQUAL
, PREC_EQUAL
, 0},
1015 {"!=", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
1016 {"<=", BINOP_LEQ
, PREC_ORDER
, 0},
1017 {">=", BINOP_GEQ
, PREC_ORDER
, 0},
1018 {">", BINOP_GTR
, PREC_ORDER
, 0},
1019 {"<", BINOP_LESS
, PREC_ORDER
, 0},
1020 {">>", BINOP_RSH
, PREC_SHIFT
, 0},
1021 {"<<", BINOP_LSH
, PREC_SHIFT
, 0},
1023 {">>>", BINOP_
? ? ?, PREC_SHIFT
, 0},
1025 {"+", BINOP_ADD
, PREC_ADD
, 0},
1026 {"-", BINOP_SUB
, PREC_ADD
, 0},
1027 {"*", BINOP_MUL
, PREC_MUL
, 0},
1028 {"/", BINOP_DIV
, PREC_MUL
, 0},
1029 {"%", BINOP_REM
, PREC_MUL
, 0},
1030 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
1031 {"!", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
1032 {"~", UNOP_COMPLEMENT
, PREC_PREFIX
, 0},
1033 {"*", UNOP_IND
, PREC_PREFIX
, 0},
1035 {"instanceof", ? ? ?, ? ? ?, 0},
1037 {"++", UNOP_PREINCREMENT
, PREC_PREFIX
, 0},
1038 {"--", UNOP_PREDECREMENT
, PREC_PREFIX
, 0},
1042 const struct language_defn java_language_defn
=
1044 "java", /* Language name */
1052 evaluate_subexp_java
,
1053 c_printchar
, /* Print a character constant */
1054 c_printstr
, /* Function to print string constant */
1055 java_emit_char
, /* Function to print a single character */
1056 java_create_fundamental_type
, /* Create fundamental type in this language */
1057 java_print_type
, /* Print a type using appropriate syntax */
1058 java_val_print
, /* Print a value using appropriate syntax */
1059 java_value_print
, /* Print a top-level value */
1060 NULL
, /* Language specific skip_trampoline */
1061 value_of_this
, /* value_of_this */
1062 basic_lookup_symbol_nonlocal
, /* lookup_symbol_nonlocal */
1063 java_demangle
, /* Language specific symbol demangler */
1064 {"", "", "", ""}, /* Binary format info */
1065 {"0%lo", "0", "o", ""}, /* Octal format info */
1066 {"%ld", "", "d", ""}, /* Decimal format info */
1067 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1068 java_op_print_tab
, /* expression operators for printing */
1069 0, /* not c-style arrays */
1070 0, /* String lower bound */
1071 &builtin_type_char
, /* Type of string elements */
1076 _initialize_java_language (void)
1079 java_int_type
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1080 java_short_type
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1081 java_long_type
= init_type (TYPE_CODE_INT
, 8, 0, "long", NULL
);
1082 java_byte_type
= init_type (TYPE_CODE_INT
, 1, 0, "byte", NULL
);
1083 java_boolean_type
= init_type (TYPE_CODE_BOOL
, 1, 0, "boolean", NULL
);
1084 java_char_type
= init_type (TYPE_CODE_CHAR
, 2, TYPE_FLAG_UNSIGNED
, "char", NULL
);
1085 java_float_type
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1086 java_double_type
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1087 java_void_type
= init_type (TYPE_CODE_VOID
, 1, 0, "void", NULL
);
1089 add_language (&java_language_defn
);
1092 /* Cleanup code that should be run on every "run".
1093 We should use make_run_cleanup to have this be called.
1094 But will that mess up values in value histry? FIXME */
1096 extern void java_rerun_cleanup (void);
1098 java_rerun_cleanup (void)
1100 if (class_symtab
!= NULL
)
1102 free_symtab (class_symtab
); /* ??? */
1103 class_symtab
= NULL
;
1105 if (dynamics_objfile
!= NULL
)
1107 free_objfile (dynamics_objfile
);
1108 dynamics_objfile
= NULL
;
1111 java_object_type
= NULL
;