1 /* Java language support routines for GDB, the GNU debugger.
2 Copyright 1997, 1998, 1999, 2000, 2003, 2004 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 value
*java_value_string (char *ptr
, int len
);
63 static void java_emit_char (int c
, struct ui_file
* stream
, int quoter
);
65 static char *java_class_name_from_physname (const char *physname
);
67 /* This objfile contains symtabs that have been dynamically created
68 to record dynamically loaded Java classes and dynamically
69 compiled java methods. */
71 static struct objfile
*dynamics_objfile
= NULL
;
73 static struct type
*java_link_class_type (struct type
*, struct value
*);
75 /* FIXME: carlton/2003-02-04: This is the main or only caller of
76 allocate_objfile with first argument NULL; as a result, this code
77 breaks every so often. Somebody should write a test case that
78 exercises GDB in various ways (e.g. something involving loading a
79 dynamic library) after this code has been called. */
81 static struct objfile
*
82 get_dynamics_objfile (void)
84 if (dynamics_objfile
== NULL
)
86 dynamics_objfile
= allocate_objfile (NULL
, 0);
88 return dynamics_objfile
;
92 /* symtab contains classes read from the inferior. */
94 static struct symtab
*class_symtab
= NULL
;
96 static void free_class_block (struct symtab
*symtab
);
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
->objfile_obstack
,
110 sizeof (struct blockvector
) + sizeof (struct block
*));
111 BLOCKVECTOR_NBLOCKS (bv
) = 1;
112 BLOCKVECTOR (class_symtab
) = bv
;
114 /* Allocate dummy STATIC_BLOCK. */
115 bl
= allocate_block (&objfile
->objfile_obstack
);
116 BLOCK_DICT (bl
) = dict_create_linear (&objfile
->objfile_obstack
,
118 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = bl
;
120 /* Allocate GLOBAL_BLOCK. */
121 bl
= allocate_block (&objfile
->objfile_obstack
);
122 BLOCK_DICT (bl
) = dict_create_hashed_expandable ();
123 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
124 class_symtab
->free_func
= free_class_block
;
130 add_class_symtab_symbol (struct symbol
*sym
)
132 struct symtab
*symtab
= get_java_class_symtab ();
133 struct blockvector
*bv
= BLOCKVECTOR (symtab
);
134 dict_add_symbol (BLOCK_DICT (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)), sym
);
137 static struct symbol
*add_class_symbol (struct type
*type
, CORE_ADDR addr
);
139 static struct symbol
*
140 add_class_symbol (struct type
*type
, CORE_ADDR addr
)
143 sym
= (struct symbol
*)
144 obstack_alloc (&dynamics_objfile
->objfile_obstack
, sizeof (struct symbol
));
145 memset (sym
, 0, sizeof (struct symbol
));
146 SYMBOL_LANGUAGE (sym
) = language_java
;
147 DEPRECATED_SYMBOL_NAME (sym
) = TYPE_TAG_NAME (type
);
148 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
149 /* SYMBOL_VALUE (sym) = valu; */
150 SYMBOL_TYPE (sym
) = type
;
151 SYMBOL_DOMAIN (sym
) = STRUCT_DOMAIN
;
152 SYMBOL_VALUE_ADDRESS (sym
) = addr
;
156 /* Free the dynamic symbols block. */
158 free_class_block (struct symtab
*symtab
)
160 struct blockvector
*bv
= BLOCKVECTOR (symtab
);
161 struct block
*bl
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
163 dict_free (BLOCK_DICT (bl
));
168 java_lookup_class (char *name
)
171 sym
= lookup_symbol (name
, expression_context_block
, STRUCT_DOMAIN
,
172 (int *) 0, (struct symtab
**) NULL
);
174 return SYMBOL_TYPE (sym
);
177 if (called from parser
)
179 call
lookup_class (or similar
) in inferior
;
183 addr
= found in inferior
;
188 type
= alloc_type (objfile
);
189 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
190 INIT_CPLUS_SPECIFIC (type
);
191 TYPE_TAG_NAME (type
) = obsavestring (name
, strlen (name
), &objfile
->objfile_obstack
);
192 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
196 /* FIXME - should search inferior's symbol table. */
201 /* Return a nul-terminated string (allocated on OBSTACK) for
202 a name given by NAME (which has type Utf8Const*). */
205 get_java_utf8_name (struct obstack
*obstack
, struct value
*name
)
208 struct value
*temp
= name
;
211 temp
= value_struct_elt (&temp
, NULL
, "length", NULL
, "structure");
212 name_length
= (int) value_as_long (temp
);
213 data_addr
= VALUE_ADDRESS (temp
) + VALUE_OFFSET (temp
)
214 + TYPE_LENGTH (VALUE_TYPE (temp
));
215 chrs
= obstack_alloc (obstack
, name_length
+ 1);
216 chrs
[name_length
] = '\0';
217 read_memory (data_addr
, chrs
, name_length
);
222 java_class_from_object (struct value
*obj_val
)
224 /* This is all rather inefficient, since the offsets of vtable and
225 class are fixed. FIXME */
226 struct value
*vtable_val
;
228 if (TYPE_CODE (VALUE_TYPE (obj_val
)) == TYPE_CODE_PTR
229 && TYPE_LENGTH (TYPE_TARGET_TYPE (VALUE_TYPE (obj_val
))) == 0)
230 obj_val
= value_at (get_java_object_type (),
231 value_as_address (obj_val
), NULL
);
233 vtable_val
= value_struct_elt (&obj_val
, NULL
, "vtable", NULL
, "structure");
234 return value_struct_elt (&vtable_val
, NULL
, "class", NULL
, "structure");
237 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
239 java_class_is_primitive (struct value
*clas
)
241 struct value
*vtable
= value_struct_elt (&clas
, NULL
, "vtable", NULL
, "struct");
242 CORE_ADDR i
= value_as_address (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 (struct value
*clas
)
254 struct objfile
*objfile
;
255 struct value
*utf8_name
;
259 struct dict_iterator iter
;
262 type
= check_typedef (VALUE_TYPE (clas
));
263 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
265 if (value_logical_not (clas
))
267 clas
= value_ind (clas
);
269 addr
= VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
);
272 get_java_class_symtab ();
273 bl
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab
), GLOBAL_BLOCK
);
274 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
276 if (SYMBOL_VALUE_ADDRESS (sym
) == addr
)
277 return SYMBOL_TYPE (sym
);
281 objfile
= get_dynamics_objfile ();
282 if (java_class_is_primitive (clas
))
286 sig
= value_struct_elt (&temp
, NULL
, "method_count", NULL
, "structure");
287 return java_primitive_type (value_as_long (sig
));
290 /* Get Class name. */
291 /* if clasloader non-null, prepend loader address. FIXME */
293 utf8_name
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
294 name
= get_java_utf8_name (&objfile
->objfile_obstack
, utf8_name
);
295 for (nptr
= name
; *nptr
!= 0; nptr
++)
301 type
= java_lookup_class (name
);
305 type
= alloc_type (objfile
);
306 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
307 INIT_CPLUS_SPECIFIC (type
);
311 char *signature
= name
;
312 int namelen
= java_demangled_signature_length (signature
);
313 if (namelen
> strlen (name
))
314 name
= obstack_alloc (&objfile
->objfile_obstack
, namelen
+ 1);
315 java_demangled_signature_copy (name
, signature
);
316 name
[namelen
] = '\0';
319 /* Set array element type. */
320 temp
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
321 VALUE_TYPE (temp
) = lookup_pointer_type (VALUE_TYPE (clas
));
322 TYPE_TARGET_TYPE (type
) = type_from_class (temp
);
325 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
326 TYPE_TAG_NAME (type
) = name
;
328 add_class_symtab_symbol (add_class_symbol (type
, addr
));
329 return java_link_class_type (type
, clas
);
332 /* Fill in class TYPE with data from the CLAS value. */
335 java_link_class_type (struct type
*type
, struct value
*clas
)
338 char *unqualified_name
;
339 char *name
= TYPE_TAG_NAME (type
);
340 int ninterfaces
, nfields
, nmethods
;
341 int type_is_object
= 0;
342 struct fn_field
*fn_fields
;
343 struct fn_fieldlist
*fn_fieldlists
;
344 struct value
*fields
;
345 struct value
*methods
;
346 struct value
*method
= NULL
;
347 struct value
*field
= NULL
;
349 struct objfile
*objfile
= get_dynamics_objfile ();
352 unqualified_name
= strrchr (name
, '.');
353 if (unqualified_name
== NULL
)
354 unqualified_name
= name
;
357 temp
= value_struct_elt (&temp
, NULL
, "superclass", NULL
, "structure");
358 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
360 tsuper
= get_java_object_type ();
361 if (tsuper
&& TYPE_CODE (tsuper
) == TYPE_CODE_PTR
)
362 tsuper
= TYPE_TARGET_TYPE (tsuper
);
366 tsuper
= type_from_class (temp
);
372 ninterfaces
= value_as_long (value_struct_elt (&temp
, NULL
, "interface_len", NULL
, "structure"));
374 TYPE_N_BASECLASSES (type
) = (tsuper
== NULL
? 0 : 1) + ninterfaces
;
376 nfields
= value_as_long (value_struct_elt (&temp
, NULL
, "field_count", NULL
, "structure"));
377 nfields
+= TYPE_N_BASECLASSES (type
);
378 nfields
++; /* Add one for dummy "class" field. */
379 TYPE_NFIELDS (type
) = nfields
;
380 TYPE_FIELDS (type
) = (struct field
*)
381 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
383 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
385 TYPE_FIELD_PRIVATE_BITS (type
) =
386 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
387 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
389 TYPE_FIELD_PROTECTED_BITS (type
) =
390 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
391 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
393 TYPE_FIELD_IGNORE_BITS (type
) =
394 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
395 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
397 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
398 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
399 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
403 TYPE_BASECLASS (type
, 0) = tsuper
;
405 SET_TYPE_FIELD_PRIVATE (type
, 0);
409 if (i
> 2 && name
[i
- 1] == ']' && tsuper
!= NULL
)
412 TYPE_LENGTH (type
) = TYPE_LENGTH (tsuper
) + 4; /* size with "length" */
417 temp
= value_struct_elt (&temp
, NULL
, "size_in_bytes", NULL
, "structure");
418 TYPE_LENGTH (type
) = value_as_long (temp
);
422 nfields
--; /* First set up dummy "class" field. */
423 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, nfields
),
424 VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
));
425 TYPE_FIELD_NAME (type
, nfields
) = "class";
426 TYPE_FIELD_TYPE (type
, nfields
) = VALUE_TYPE (clas
);
427 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
429 for (i
= TYPE_N_BASECLASSES (type
); i
< nfields
; i
++)
436 fields
= value_struct_elt (&temp
, NULL
, "fields", NULL
, "structure");
437 field
= value_ind (fields
);
440 { /* Re-use field value for next field. */
441 VALUE_ADDRESS (field
) += TYPE_LENGTH (VALUE_TYPE (field
));
442 VALUE_LAZY (field
) = 1;
445 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
446 TYPE_FIELD_NAME (type
, i
) =
447 get_java_utf8_name (&objfile
->objfile_obstack
, temp
);
449 accflags
= value_as_long (value_struct_elt (&temp
, NULL
, "accflags",
452 temp
= value_struct_elt (&temp
, NULL
, "info", NULL
, "structure");
453 boffset
= value_as_long (value_struct_elt (&temp
, NULL
, "boffset",
455 if (accflags
& 0x0001) /* public access */
459 if (accflags
& 0x0002) /* private access */
461 SET_TYPE_FIELD_PRIVATE (type
, i
);
463 if (accflags
& 0x0004) /* protected access */
465 SET_TYPE_FIELD_PROTECTED (type
, i
);
467 if (accflags
& 0x0008) /* ACC_STATIC */
468 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, i
), boffset
);
470 TYPE_FIELD_BITPOS (type
, i
) = 8 * boffset
;
471 if (accflags
& 0x8000) /* FIELD_UNRESOLVED_FLAG */
473 TYPE_FIELD_TYPE (type
, i
) = get_java_object_type (); /* FIXME */
479 temp
= value_struct_elt (&temp
, NULL
, "type", NULL
, "structure");
480 ftype
= type_from_class (temp
);
481 if (TYPE_CODE (ftype
) == TYPE_CODE_STRUCT
)
482 ftype
= lookup_pointer_type (ftype
);
483 TYPE_FIELD_TYPE (type
, i
) = ftype
;
488 nmethods
= value_as_long (value_struct_elt (&temp
, NULL
, "method_count",
490 TYPE_NFN_FIELDS_TOTAL (type
) = nmethods
;
491 j
= nmethods
* sizeof (struct fn_field
);
492 fn_fields
= (struct fn_field
*)
493 obstack_alloc (&dynamics_objfile
->objfile_obstack
, j
);
494 memset (fn_fields
, 0, j
);
495 fn_fieldlists
= (struct fn_fieldlist
*)
496 alloca (nmethods
* sizeof (struct fn_fieldlist
));
499 for (i
= 0; i
< nmethods
; i
++)
506 methods
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
507 method
= value_ind (methods
);
510 { /* Re-use method value for next method. */
511 VALUE_ADDRESS (method
) += TYPE_LENGTH (VALUE_TYPE (method
));
512 VALUE_LAZY (method
) = 1;
515 /* Get method name. */
517 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
518 mname
= get_java_utf8_name (&objfile
->objfile_obstack
, temp
);
519 if (strcmp (mname
, "<init>") == 0)
520 mname
= unqualified_name
;
522 /* Check for an existing method with the same name.
523 * This makes building the fn_fieldslists an O(nmethods**2)
524 * operation. That could be using hashing, but I doubt it
525 * is worth it. Note that we do maintain the order of methods
526 * in the inferior's Method table (as long as that is grouped
527 * by method name), which I think is desirable. --PB */
528 for (k
= 0, j
= TYPE_NFN_FIELDS (type
);;)
531 { /* No match - new method name. */
532 j
= TYPE_NFN_FIELDS (type
)++;
533 fn_fieldlists
[j
].name
= mname
;
534 fn_fieldlists
[j
].length
= 1;
535 fn_fieldlists
[j
].fn_fields
= &fn_fields
[i
];
539 if (strcmp (mname
, fn_fieldlists
[j
].name
) == 0)
540 { /* Found an existing method with the same name. */
542 if (mname
!= unqualified_name
)
543 obstack_free (&objfile
->objfile_obstack
, mname
);
544 mname
= fn_fieldlists
[j
].name
;
545 fn_fieldlists
[j
].length
++;
546 k
= i
- k
; /* Index of new slot. */
547 /* Shift intervening fn_fields (between k and i) down. */
548 for (l
= i
; l
> k
; l
--)
549 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
->objfile_obstack
, j
);
565 memcpy (TYPE_FN_FIELDLISTS (type
), fn_fieldlists
, j
);
570 static struct type
*java_object_type
;
573 get_java_object_type (void)
575 if (java_object_type
== NULL
)
578 sym
= lookup_symbol ("java.lang.Object", NULL
, STRUCT_DOMAIN
,
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 (void)
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 (struct type
*type
)
600 CHECK_TYPEDEF (type
);
601 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
603 struct type
*ttype
= check_typedef (TYPE_TARGET_TYPE (type
));
605 if (TYPE_CODE (ttype
) != TYPE_CODE_STRUCT
)
607 while (TYPE_N_BASECLASSES (ttype
) > 0)
608 ttype
= TYPE_BASECLASS (ttype
, 0);
609 name
= TYPE_TAG_NAME (ttype
);
610 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
612 name
= TYPE_NFIELDS (ttype
) > 0 ? TYPE_FIELD_NAME (ttype
, 0) : (char *) 0;
613 if (name
!= NULL
&& strcmp (name
, "vtable") == 0)
615 if (java_object_type
== NULL
)
616 java_object_type
= type
;
624 java_primitive_type (int signature
)
629 return java_byte_type
;
631 return java_short_type
;
633 return java_int_type
;
635 return java_long_type
;
637 return java_boolean_type
;
639 return java_char_type
;
641 return java_float_type
;
643 return java_double_type
;
645 return java_void_type
;
647 error ("unknown signature '%c' for primitive type", (char) signature
);
650 /* If name[0 .. namelen-1] is the name of a primitive Java type,
651 return that type. Otherwise, return NULL. */
654 java_primitive_type_from_name (char *name
, int namelen
)
659 if (namelen
== 4 && memcmp (name
, "byte", 4) == 0)
660 return java_byte_type
;
661 if (namelen
== 7 && memcmp (name
, "boolean", 7) == 0)
662 return java_boolean_type
;
665 if (namelen
== 4 && memcmp (name
, "char", 4) == 0)
666 return java_char_type
;
668 if (namelen
== 6 && memcmp (name
, "double", 6) == 0)
669 return java_double_type
;
672 if (namelen
== 5 && memcmp (name
, "float", 5) == 0)
673 return java_float_type
;
676 if (namelen
== 3 && memcmp (name
, "int", 3) == 0)
677 return java_int_type
;
680 if (namelen
== 4 && memcmp (name
, "long", 4) == 0)
681 return java_long_type
;
684 if (namelen
== 5 && memcmp (name
, "short", 5) == 0)
685 return java_short_type
;
688 if (namelen
== 4 && memcmp (name
, "void", 4) == 0)
689 return java_void_type
;
695 /* Return the length (in bytes) of demangled name of the Java type
696 signature string SIGNATURE. */
699 java_demangled_signature_length (char *signature
)
702 for (; *signature
== '['; signature
++)
703 array
+= 2; /* Two chars for "[]". */
704 switch (signature
[0])
707 /* Subtract 2 for 'L' and ';'. */
708 return strlen (signature
) - 2 + array
;
710 return strlen (TYPE_NAME (java_primitive_type (signature
[0]))) + array
;
714 /* Demangle the Java type signature SIGNATURE, leaving the result in RESULT. */
717 java_demangled_signature_copy (char *result
, char *signature
)
722 while (*signature
== '[')
727 switch (signature
[0])
730 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
733 for (; *signature
!= ';' && *signature
!= '\0'; signature
++)
735 if (*signature
== '/')
742 ptr
= TYPE_NAME (java_primitive_type (signature
[0]));
744 strcpy (result
, ptr
);
755 /* Return the demangled name of the Java type signature string SIGNATURE,
756 as a freshly allocated copy. */
759 java_demangle_type_signature (char *signature
)
761 int length
= java_demangled_signature_length (signature
);
762 char *result
= xmalloc (length
+ 1);
763 java_demangled_signature_copy (result
, signature
);
764 result
[length
] = '\0';
768 /* Return the type of TYPE followed by DIMS pairs of [ ].
769 If DIMS == 0, TYPE is returned. */
772 java_array_type (struct type
*type
, int dims
)
774 struct type
*range_type
;
778 range_type
= create_range_type (NULL
, builtin_type_int
, 0, 0);
779 /* FIXME This is bogus! Java arrays are not gdb arrays! */
780 type
= create_array_type (NULL
, type
, range_type
);
786 /* Create a Java string in the inferior from a (Utf8) literal. */
788 static struct value
*
789 java_value_string (char *ptr
, int len
)
791 error ("not implemented - java_value_string"); /* FIXME */
794 /* Print the character C on STREAM as part of the contents of a literal
795 string whose delimiter is QUOTER. Note that that format for printing
796 characters and strings is language specific. */
799 java_emit_char (int c
, struct ui_file
*stream
, int quoter
)
805 fprintf_filtered (stream
, "\\%c", c
);
808 fputs_filtered ("\\b", stream
);
811 fputs_filtered ("\\t", stream
);
814 fputs_filtered ("\\n", stream
);
817 fputs_filtered ("\\f", stream
);
820 fputs_filtered ("\\r", stream
);
824 fputc_filtered (c
, stream
);
826 fprintf_filtered (stream
, "\\u%.4x", (unsigned int) c
);
831 static struct value
*
832 evaluate_subexp_java (struct type
*expect_type
, struct expression
*exp
,
833 int *pos
, enum noside noside
)
838 enum exp_opcode op
= exp
->elts
[*pos
].opcode
;
845 if (noside
== EVAL_SKIP
)
848 arg1
= evaluate_subexp_java (NULL_TYPE
, exp
, pos
, EVAL_NORMAL
);
849 if (is_object_type (VALUE_TYPE (arg1
)))
853 type
= type_from_class (java_class_from_object (arg1
));
854 arg1
= value_cast (lookup_pointer_type (type
), arg1
);
856 if (noside
== EVAL_SKIP
)
858 return value_ind (arg1
);
860 case BINOP_SUBSCRIPT
:
862 arg1
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
863 arg2
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
864 if (noside
== EVAL_SKIP
)
866 /* If the user attempts to subscript something that is not an
867 array or pointer type (like a plain int variable for example),
868 then report this as an error. */
871 type
= check_typedef (VALUE_TYPE (arg1
));
872 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
873 type
= check_typedef (TYPE_TARGET_TYPE (type
));
874 name
= TYPE_NAME (type
);
876 name
= TYPE_TAG_NAME (type
);
877 i
= name
== NULL
? 0 : strlen (name
);
878 if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
879 && i
> 2 && name
[i
- 1] == ']')
883 struct type
*el_type
;
886 struct value
*clas
= java_class_from_object (arg1
);
887 struct value
*temp
= clas
;
888 /* Get CLASS_ELEMENT_TYPE of the array type. */
889 temp
= value_struct_elt (&temp
, NULL
, "methods",
891 VALUE_TYPE (temp
) = VALUE_TYPE (clas
);
892 el_type
= type_from_class (temp
);
893 if (TYPE_CODE (el_type
) == TYPE_CODE_STRUCT
)
894 el_type
= lookup_pointer_type (el_type
);
896 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
897 return value_zero (el_type
, VALUE_LVAL (arg1
));
898 address
= value_as_address (arg1
);
899 address
+= JAVA_OBJECT_SIZE
;
900 read_memory (address
, buf4
, 4);
901 length
= (long) extract_signed_integer (buf4
, 4);
902 index
= (long) value_as_long (arg2
);
903 if (index
>= length
|| index
< 0)
904 error ("array index (%ld) out of bounds (length: %ld)",
906 address
= (address
+ 4) + index
* TYPE_LENGTH (el_type
);
907 return value_at (el_type
, address
, NULL
);
909 else if (TYPE_CODE (type
) == TYPE_CODE_ARRAY
)
911 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
912 return value_zero (TYPE_TARGET_TYPE (type
), VALUE_LVAL (arg1
));
914 return value_subscript (arg1
, arg2
);
917 error ("cannot subscript something of type `%s'", name
);
919 error ("cannot subscript requested type");
923 i
= longest_to_int (exp
->elts
[pc
+ 1].longconst
);
924 (*pos
) += 3 + BYTES_TO_EXP_ELEM (i
+ 1);
925 if (noside
== EVAL_SKIP
)
927 return java_value_string (&exp
->elts
[pc
+ 2].string
, i
);
929 case STRUCTOP_STRUCT
:
930 arg1
= evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
931 /* Convert object field (such as TYPE.class) to reference. */
932 if (TYPE_CODE (VALUE_TYPE (arg1
)) == TYPE_CODE_STRUCT
)
933 arg1
= value_addr (arg1
);
939 return evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
941 return value_from_longest (builtin_type_long
, (LONGEST
) 1);
945 java_create_fundamental_type (struct objfile
*objfile
, int typeid)
950 return java_void_type
;
952 return java_boolean_type
;
954 return java_char_type
;
956 return java_float_type
;
957 case FT_DBL_PREC_FLOAT
:
958 return java_double_type
;
961 return java_byte_type
;
963 case FT_SIGNED_SHORT
:
964 return java_short_type
;
966 case FT_SIGNED_INTEGER
:
967 return java_int_type
;
970 return java_long_type
;
972 return c_create_fundamental_type (objfile
, typeid);
975 static char *java_demangle (const char *mangled
, int options
)
977 return cplus_demangle (mangled
, options
| DMGL_JAVA
);
980 /* Find the member function name of the demangled name NAME. NAME
981 must be a method name including arguments, in order to correctly
982 locate the last component.
984 This function return a pointer to the first dot before the
985 member function name, or NULL if the name was not of the
989 java_find_last_component (const char *name
)
993 /* Find argument list. */
994 p
= strchr (name
, '(');
999 /* Back up and find first dot prior to argument list. */
1000 while (p
> name
&& *p
!= '.')
1009 /* Return the name of the class containing method PHYSNAME. */
1012 java_class_name_from_physname (const char *physname
)
1017 char *demangled_name
= java_demangle (physname
, DMGL_PARAMS
| DMGL_ANSI
);
1019 if (demangled_name
== NULL
)
1022 end
= java_find_last_component (demangled_name
);
1025 ret
= xmalloc (end
- demangled_name
+ 1);
1026 memcpy (ret
, demangled_name
, end
- demangled_name
);
1027 ret
[end
- demangled_name
] = '\0';
1030 xfree (demangled_name
);
1034 /* Table mapping opcodes into strings for printing operators
1035 and precedences of the operators. */
1037 const struct op_print java_op_print_tab
[] =
1039 {",", BINOP_COMMA
, PREC_COMMA
, 0},
1040 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
1041 {"||", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
1042 {"&&", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
1043 {"|", BINOP_BITWISE_IOR
, PREC_BITWISE_IOR
, 0},
1044 {"^", BINOP_BITWISE_XOR
, PREC_BITWISE_XOR
, 0},
1045 {"&", BINOP_BITWISE_AND
, PREC_BITWISE_AND
, 0},
1046 {"==", BINOP_EQUAL
, PREC_EQUAL
, 0},
1047 {"!=", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
1048 {"<=", BINOP_LEQ
, PREC_ORDER
, 0},
1049 {">=", BINOP_GEQ
, PREC_ORDER
, 0},
1050 {">", BINOP_GTR
, PREC_ORDER
, 0},
1051 {"<", BINOP_LESS
, PREC_ORDER
, 0},
1052 {">>", BINOP_RSH
, PREC_SHIFT
, 0},
1053 {"<<", BINOP_LSH
, PREC_SHIFT
, 0},
1055 {">>>", BINOP_
? ? ?, PREC_SHIFT
, 0},
1057 {"+", BINOP_ADD
, PREC_ADD
, 0},
1058 {"-", BINOP_SUB
, PREC_ADD
, 0},
1059 {"*", BINOP_MUL
, PREC_MUL
, 0},
1060 {"/", BINOP_DIV
, PREC_MUL
, 0},
1061 {"%", BINOP_REM
, PREC_MUL
, 0},
1062 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
1063 {"!", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
1064 {"~", UNOP_COMPLEMENT
, PREC_PREFIX
, 0},
1065 {"*", UNOP_IND
, PREC_PREFIX
, 0},
1067 {"instanceof", ? ? ?, ? ? ?, 0},
1069 {"++", UNOP_PREINCREMENT
, PREC_PREFIX
, 0},
1070 {"--", UNOP_PREDECREMENT
, PREC_PREFIX
, 0},
1074 const struct exp_descriptor exp_descriptor_java
=
1076 print_subexp_standard
,
1077 operator_length_standard
,
1079 dump_subexp_body_standard
,
1080 evaluate_subexp_java
1083 const struct language_defn java_language_defn
=
1085 "java", /* Language name */
1091 &exp_descriptor_java
,
1095 c_printchar
, /* Print a character constant */
1096 c_printstr
, /* Function to print string constant */
1097 java_emit_char
, /* Function to print a single character */
1098 java_create_fundamental_type
, /* Create fundamental type in this language */
1099 java_print_type
, /* Print a type using appropriate syntax */
1100 java_val_print
, /* Print a value using appropriate syntax */
1101 java_value_print
, /* Print a top-level value */
1102 NULL
, /* Language specific skip_trampoline */
1103 value_of_this
, /* value_of_this */
1104 basic_lookup_symbol_nonlocal
, /* lookup_symbol_nonlocal */
1105 basic_lookup_transparent_type
,/* lookup_transparent_type */
1106 java_demangle
, /* Language specific symbol demangler */
1107 java_class_name_from_physname
,/* Language specific class name */
1108 {"", "", "", ""}, /* Binary format info */
1109 {"0%lo", "0", "o", ""}, /* Octal format info */
1110 {"%ld", "", "d", ""}, /* Decimal format info */
1111 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1112 java_op_print_tab
, /* expression operators for printing */
1113 0, /* not c-style arrays */
1114 0, /* String lower bound */
1115 &builtin_type_char
, /* Type of string elements */
1116 default_word_break_characters
,
1121 _initialize_java_language (void)
1124 java_int_type
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1125 java_short_type
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1126 java_long_type
= init_type (TYPE_CODE_INT
, 8, 0, "long", NULL
);
1127 java_byte_type
= init_type (TYPE_CODE_INT
, 1, 0, "byte", NULL
);
1128 java_boolean_type
= init_type (TYPE_CODE_BOOL
, 1, 0, "boolean", NULL
);
1129 java_char_type
= init_type (TYPE_CODE_CHAR
, 2, TYPE_FLAG_UNSIGNED
, "char", NULL
);
1130 java_float_type
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1131 java_double_type
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1132 java_void_type
= init_type (TYPE_CODE_VOID
, 1, 0, "void", NULL
);
1134 add_language (&java_language_defn
);
1137 /* Cleanup code that should be run on every "run".
1138 We should use make_run_cleanup to have this be called.
1139 But will that mess up values in value histry? FIXME */
1141 extern void java_rerun_cleanup (void);
1143 java_rerun_cleanup (void)
1145 if (class_symtab
!= NULL
)
1147 free_symtab (class_symtab
); /* ??? */
1148 class_symtab
= NULL
;
1150 if (dynamics_objfile
!= NULL
)
1152 free_objfile (dynamics_objfile
);
1153 dynamics_objfile
= NULL
;
1156 java_object_type
= NULL
;