1 /* Java language support routines for GDB, the GNU debugger.
3 Copyright (C) 1997, 1998, 1999, 2000, 2003, 2004, 2005, 2007, 2008, 2009,
4 2010 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include "expression.h"
25 #include "parser-defs.h"
31 #include "gdb_string.h"
38 #include "dictionary.h"
40 #include "gdb_assert.h"
44 extern void _initialize_java_language (void);
46 static int java_demangled_signature_length (char *);
47 static void java_demangled_signature_copy (char *, char *);
49 static struct symtab
*get_java_class_symtab (struct gdbarch
*gdbarch
);
50 static char *get_java_utf8_name (struct obstack
*obstack
, struct value
*name
);
51 static int java_class_is_primitive (struct value
*clas
);
52 static struct value
*java_value_string (char *ptr
, int len
);
54 static void java_emit_char (int c
, struct type
*type
,
55 struct ui_file
* stream
, int quoter
);
57 static char *java_class_name_from_physname (const char *physname
);
59 static const struct objfile_data
*jv_dynamics_objfile_data_key
;
60 static const struct objfile_data
*jv_type_objfile_data_key
;
62 /* This objfile contains symtabs that have been dynamically created
63 to record dynamically loaded Java classes and dynamically
64 compiled java methods. */
66 static struct objfile
*dynamics_objfile
= NULL
;
68 /* symtab contains classes read from the inferior. */
70 static struct symtab
*class_symtab
= NULL
;
72 static struct type
*java_link_class_type (struct gdbarch
*,
73 struct type
*, struct value
*);
75 /* A function called when the dynamics_objfile is freed. We use this
76 to clean up some internal state. */
78 jv_per_objfile_free (struct objfile
*objfile
, void *ignore
)
80 gdb_assert (objfile
== dynamics_objfile
);
81 /* Clean up all our cached state. These objects are all allocated
82 in the dynamics_objfile, so we don't need to actually free
84 dynamics_objfile
= NULL
;
88 /* FIXME: carlton/2003-02-04: This is the main or only caller of
89 allocate_objfile with first argument NULL; as a result, this code
90 breaks every so often. Somebody should write a test case that
91 exercises GDB in various ways (e.g. something involving loading a
92 dynamic library) after this code has been called. */
94 static struct objfile
*
95 get_dynamics_objfile (struct gdbarch
*gdbarch
)
97 if (dynamics_objfile
== NULL
)
99 /* Mark it as shared so that it is cleared when the inferior is
101 dynamics_objfile
= allocate_objfile (NULL
, OBJF_SHARED
);
102 dynamics_objfile
->gdbarch
= gdbarch
;
103 /* We don't have any data to store, but this lets us get a
104 notification when the objfile is destroyed. Since we have to
105 store a non-NULL value, we just pick something arbitrary and
107 set_objfile_data (dynamics_objfile
, jv_dynamics_objfile_data_key
,
110 return dynamics_objfile
;
113 static void free_class_block (struct symtab
*symtab
);
115 static struct symtab
*
116 get_java_class_symtab (struct gdbarch
*gdbarch
)
118 if (class_symtab
== NULL
)
120 struct objfile
*objfile
= get_dynamics_objfile (gdbarch
);
121 struct blockvector
*bv
;
123 class_symtab
= allocate_symtab ("<java-classes>", objfile
);
124 class_symtab
->language
= language_java
;
125 bv
= (struct blockvector
*)
126 obstack_alloc (&objfile
->objfile_obstack
,
127 sizeof (struct blockvector
) + sizeof (struct block
*));
128 BLOCKVECTOR_NBLOCKS (bv
) = 1;
129 BLOCKVECTOR (class_symtab
) = bv
;
131 /* Allocate dummy STATIC_BLOCK. */
132 bl
= allocate_block (&objfile
->objfile_obstack
);
133 BLOCK_DICT (bl
) = dict_create_linear (&objfile
->objfile_obstack
,
135 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = bl
;
137 /* Allocate GLOBAL_BLOCK. */
138 bl
= allocate_block (&objfile
->objfile_obstack
);
139 BLOCK_DICT (bl
) = dict_create_hashed_expandable ();
140 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
141 class_symtab
->free_func
= free_class_block
;
147 add_class_symtab_symbol (struct symbol
*sym
)
149 struct symtab
*symtab
150 = get_java_class_symtab (get_objfile_arch (SYMBOL_SYMTAB (sym
)->objfile
));
151 struct blockvector
*bv
= BLOCKVECTOR (symtab
);
152 dict_add_symbol (BLOCK_DICT (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)), sym
);
155 static struct symbol
*
156 add_class_symbol (struct type
*type
, CORE_ADDR addr
)
159 sym
= (struct symbol
*)
160 obstack_alloc (&dynamics_objfile
->objfile_obstack
, sizeof (struct symbol
));
161 memset (sym
, 0, sizeof (struct symbol
));
162 SYMBOL_LANGUAGE (sym
) = language_java
;
163 SYMBOL_SET_LINKAGE_NAME (sym
, TYPE_TAG_NAME (type
));
164 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
165 /* SYMBOL_VALUE (sym) = valu; */
166 SYMBOL_TYPE (sym
) = type
;
167 SYMBOL_DOMAIN (sym
) = STRUCT_DOMAIN
;
168 SYMBOL_VALUE_ADDRESS (sym
) = addr
;
172 /* Free the dynamic symbols block. */
174 free_class_block (struct symtab
*symtab
)
176 struct blockvector
*bv
= BLOCKVECTOR (symtab
);
177 struct block
*bl
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
179 dict_free (BLOCK_DICT (bl
));
183 java_lookup_class (char *name
)
186 sym
= lookup_symbol (name
, expression_context_block
, STRUCT_DOMAIN
, NULL
);
188 return SYMBOL_TYPE (sym
);
191 if (called from parser
)
193 call
lookup_class (or similar
) in inferior
;
197 addr
= found in inferior
;
202 type
= alloc_type (objfile
);
203 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
204 INIT_CPLUS_SPECIFIC (type
);
205 TYPE_TAG_NAME (type
) = obsavestring (name
, strlen (name
), &objfile
->objfile_obstack
);
206 TYPE_STUB (type
) = 1;
210 /* FIXME - should search inferior's symbol table. */
215 /* Return a nul-terminated string (allocated on OBSTACK) for
216 a name given by NAME (which has type Utf8Const*). */
219 get_java_utf8_name (struct obstack
*obstack
, struct value
*name
)
222 struct value
*temp
= name
;
225 temp
= value_struct_elt (&temp
, NULL
, "length", NULL
, "structure");
226 name_length
= (int) value_as_long (temp
);
227 data_addr
= value_address (temp
) + TYPE_LENGTH (value_type (temp
));
228 chrs
= obstack_alloc (obstack
, name_length
+ 1);
229 chrs
[name_length
] = '\0';
230 read_memory (data_addr
, (gdb_byte
*) chrs
, name_length
);
235 java_class_from_object (struct value
*obj_val
)
237 /* This is all rather inefficient, since the offsets of vtable and
238 class are fixed. FIXME */
239 struct value
*vtable_val
;
241 if (TYPE_CODE (value_type (obj_val
)) == TYPE_CODE_PTR
242 && TYPE_LENGTH (TYPE_TARGET_TYPE (value_type (obj_val
))) == 0)
243 obj_val
= value_at (get_java_object_type (),
244 value_as_address (obj_val
));
246 vtable_val
= value_struct_elt (&obj_val
, NULL
, "vtable", NULL
, "structure");
247 return value_struct_elt (&vtable_val
, NULL
, "class", NULL
, "structure");
250 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
252 java_class_is_primitive (struct value
*clas
)
254 struct value
*vtable
= value_struct_elt (&clas
, NULL
, "vtable", NULL
, "struct");
255 CORE_ADDR i
= value_as_address (vtable
);
256 return (int) (i
& 0x7fffffff) == (int) 0x7fffffff;
259 /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
262 type_from_class (struct gdbarch
*gdbarch
, struct value
*clas
)
267 struct objfile
*objfile
;
268 struct value
*utf8_name
;
273 struct dict_iterator iter
;
277 type
= check_typedef (value_type (clas
));
278 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
280 if (value_logical_not (clas
))
282 clas
= value_ind (clas
);
284 addr
= value_address (clas
);
287 get_java_class_symtab ();
288 bl
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab
), GLOBAL_BLOCK
);
289 ALL_BLOCK_SYMBOLS (block
, iter
, sym
)
291 if (SYMBOL_VALUE_ADDRESS (sym
) == addr
)
292 return SYMBOL_TYPE (sym
);
296 objfile
= get_dynamics_objfile (gdbarch
);
297 if (java_class_is_primitive (clas
))
301 sig
= value_struct_elt (&temp
, NULL
, "method_count", NULL
, "structure");
302 return java_primitive_type (gdbarch
, value_as_long (sig
));
305 /* Get Class name. */
306 /* if clasloader non-null, prepend loader address. FIXME */
308 utf8_name
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
309 name
= get_java_utf8_name (&objfile
->objfile_obstack
, utf8_name
);
310 for (nptr
= name
; *nptr
!= 0; nptr
++)
316 type
= java_lookup_class (name
);
320 type
= alloc_type (objfile
);
321 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
322 INIT_CPLUS_SPECIFIC (type
);
326 char *signature
= name
;
327 int namelen
= java_demangled_signature_length (signature
);
328 if (namelen
> strlen (name
))
329 name
= obstack_alloc (&objfile
->objfile_obstack
, namelen
+ 1);
330 java_demangled_signature_copy (name
, signature
);
331 name
[namelen
] = '\0';
334 /* Set array element type. */
335 temp
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
336 deprecated_set_value_type (temp
, lookup_pointer_type (value_type (clas
)));
337 TYPE_TARGET_TYPE (type
) = type_from_class (gdbarch
, temp
);
340 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
341 TYPE_TAG_NAME (type
) = name
;
343 add_class_symtab_symbol (add_class_symbol (type
, addr
));
344 return java_link_class_type (gdbarch
, type
, clas
);
347 /* Fill in class TYPE with data from the CLAS value. */
350 java_link_class_type (struct gdbarch
*gdbarch
,
351 struct type
*type
, struct value
*clas
)
354 char *unqualified_name
;
355 char *name
= TYPE_TAG_NAME (type
);
356 int ninterfaces
, nfields
, nmethods
;
357 int type_is_object
= 0;
358 struct fn_field
*fn_fields
;
359 struct fn_fieldlist
*fn_fieldlists
;
360 struct value
*fields
;
361 struct value
*methods
;
362 struct value
*method
= NULL
;
363 struct value
*field
= NULL
;
365 struct objfile
*objfile
= get_dynamics_objfile (gdbarch
);
368 gdb_assert (name
!= NULL
);
369 unqualified_name
= strrchr (name
, '.');
370 if (unqualified_name
== NULL
)
371 unqualified_name
= name
;
374 temp
= value_struct_elt (&temp
, NULL
, "superclass", NULL
, "structure");
375 if (strcmp (name
, "java.lang.Object") == 0)
377 tsuper
= get_java_object_type ();
378 if (tsuper
&& TYPE_CODE (tsuper
) == TYPE_CODE_PTR
)
379 tsuper
= TYPE_TARGET_TYPE (tsuper
);
383 tsuper
= type_from_class (gdbarch
, temp
);
389 ninterfaces
= value_as_long (value_struct_elt (&temp
, NULL
, "interface_len", NULL
, "structure"));
391 TYPE_N_BASECLASSES (type
) = (tsuper
== NULL
? 0 : 1) + ninterfaces
;
393 nfields
= value_as_long (value_struct_elt (&temp
, NULL
, "field_count", NULL
, "structure"));
394 nfields
+= TYPE_N_BASECLASSES (type
);
395 nfields
++; /* Add one for dummy "class" field. */
396 TYPE_NFIELDS (type
) = nfields
;
397 TYPE_FIELDS (type
) = (struct field
*)
398 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
400 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
402 TYPE_FIELD_PRIVATE_BITS (type
) =
403 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
404 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
406 TYPE_FIELD_PROTECTED_BITS (type
) =
407 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
408 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
410 TYPE_FIELD_IGNORE_BITS (type
) =
411 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
412 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
414 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
415 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
416 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
420 TYPE_BASECLASS (type
, 0) = tsuper
;
422 SET_TYPE_FIELD_PRIVATE (type
, 0);
426 if (i
> 2 && name
[i
- 1] == ']' && tsuper
!= NULL
)
429 TYPE_LENGTH (type
) = TYPE_LENGTH (tsuper
) + 4; /* size with "length" */
434 temp
= value_struct_elt (&temp
, NULL
, "size_in_bytes", NULL
, "structure");
435 TYPE_LENGTH (type
) = value_as_long (temp
);
439 nfields
--; /* First set up dummy "class" field. */
440 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, nfields
), value_address (clas
));
441 TYPE_FIELD_NAME (type
, nfields
) = "class";
442 TYPE_FIELD_TYPE (type
, nfields
) = value_type (clas
);
443 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
445 for (i
= TYPE_N_BASECLASSES (type
); i
< nfields
; i
++)
452 fields
= value_struct_elt (&temp
, NULL
, "fields", NULL
, "structure");
453 field
= value_ind (fields
);
456 { /* Re-use field value for next field. */
458 = value_address (field
) + TYPE_LENGTH (value_type (field
));
459 set_value_address (field
, addr
);
460 set_value_lazy (field
, 1);
463 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
464 TYPE_FIELD_NAME (type
, i
) =
465 get_java_utf8_name (&objfile
->objfile_obstack
, temp
);
467 accflags
= value_as_long (value_struct_elt (&temp
, NULL
, "accflags",
470 temp
= value_struct_elt (&temp
, NULL
, "info", NULL
, "structure");
471 boffset
= value_as_long (value_struct_elt (&temp
, NULL
, "boffset",
473 if (accflags
& 0x0001) /* public access */
477 if (accflags
& 0x0002) /* private access */
479 SET_TYPE_FIELD_PRIVATE (type
, i
);
481 if (accflags
& 0x0004) /* protected access */
483 SET_TYPE_FIELD_PROTECTED (type
, i
);
485 if (accflags
& 0x0008) /* ACC_STATIC */
486 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, i
), boffset
);
488 TYPE_FIELD_BITPOS (type
, i
) = 8 * boffset
;
489 if (accflags
& 0x8000) /* FIELD_UNRESOLVED_FLAG */
491 TYPE_FIELD_TYPE (type
, i
) = get_java_object_type (); /* FIXME */
497 temp
= value_struct_elt (&temp
, NULL
, "type", NULL
, "structure");
498 ftype
= type_from_class (gdbarch
, temp
);
499 if (TYPE_CODE (ftype
) == TYPE_CODE_STRUCT
)
500 ftype
= lookup_pointer_type (ftype
);
501 TYPE_FIELD_TYPE (type
, i
) = ftype
;
506 nmethods
= value_as_long (value_struct_elt (&temp
, NULL
, "method_count",
508 TYPE_NFN_FIELDS_TOTAL (type
) = nmethods
;
509 j
= nmethods
* sizeof (struct fn_field
);
510 fn_fields
= (struct fn_field
*)
511 obstack_alloc (&dynamics_objfile
->objfile_obstack
, j
);
512 memset (fn_fields
, 0, j
);
513 fn_fieldlists
= (struct fn_fieldlist
*)
514 alloca (nmethods
* sizeof (struct fn_fieldlist
));
517 for (i
= 0; i
< nmethods
; i
++)
524 methods
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
525 method
= value_ind (methods
);
528 { /* Re-use method value for next method. */
530 = value_address (method
) + TYPE_LENGTH (value_type (method
));
531 set_value_address (method
, addr
);
532 set_value_lazy (method
, 1);
535 /* Get method name. */
537 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
538 mname
= get_java_utf8_name (&objfile
->objfile_obstack
, temp
);
539 if (strcmp (mname
, "<init>") == 0)
540 mname
= unqualified_name
;
542 /* Check for an existing method with the same name.
543 * This makes building the fn_fieldslists an O(nmethods**2)
544 * operation. That could be using hashing, but I doubt it
545 * is worth it. Note that we do maintain the order of methods
546 * in the inferior's Method table (as long as that is grouped
547 * by method name), which I think is desirable. --PB */
548 for (k
= 0, j
= TYPE_NFN_FIELDS (type
);;)
551 { /* No match - new method name. */
552 j
= TYPE_NFN_FIELDS (type
)++;
553 fn_fieldlists
[j
].name
= mname
;
554 fn_fieldlists
[j
].length
= 1;
555 fn_fieldlists
[j
].fn_fields
= &fn_fields
[i
];
559 if (strcmp (mname
, fn_fieldlists
[j
].name
) == 0)
560 { /* Found an existing method with the same name. */
562 if (mname
!= unqualified_name
)
563 obstack_free (&objfile
->objfile_obstack
, mname
);
564 mname
= fn_fieldlists
[j
].name
;
565 fn_fieldlists
[j
].length
++;
566 k
= i
- k
; /* Index of new slot. */
567 /* Shift intervening fn_fields (between k and i) down. */
568 for (l
= i
; l
> k
; l
--)
569 fn_fields
[l
] = fn_fields
[l
- 1];
570 for (l
= TYPE_NFN_FIELDS (type
); --l
> j
;)
571 fn_fieldlists
[l
].fn_fields
++;
574 k
+= fn_fieldlists
[j
].length
;
576 fn_fields
[k
].physname
= "";
577 fn_fields
[k
].is_stub
= 1;
579 fn_fields
[k
].type
= lookup_function_type
580 (builtin_java_type (gdbarch
)->builtin_void
);
581 TYPE_CODE (fn_fields
[k
].type
) = TYPE_CODE_METHOD
;
584 j
= TYPE_NFN_FIELDS (type
) * sizeof (struct fn_fieldlist
);
585 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
586 obstack_alloc (&dynamics_objfile
->objfile_obstack
, j
);
587 memcpy (TYPE_FN_FIELDLISTS (type
), fn_fieldlists
, j
);
592 static struct type
*java_object_type
;
594 /* A free function that is attached to the objfile defining
595 java_object_type. This is used to clear the cached type whenever
596 its owning objfile is destroyed. */
598 jv_clear_object_type (struct objfile
*objfile
, void *ignore
)
600 java_object_type
= NULL
;
604 set_java_object_type (struct type
*type
)
606 struct objfile
*owner
;
608 gdb_assert (java_object_type
== NULL
);
610 owner
= TYPE_OBJFILE (type
);
612 set_objfile_data (owner
, jv_type_objfile_data_key
, &java_object_type
);
613 java_object_type
= type
;
617 get_java_object_type (void)
619 if (java_object_type
== NULL
)
622 sym
= lookup_symbol ("java.lang.Object", NULL
, STRUCT_DOMAIN
, NULL
);
624 error (_("cannot find java.lang.Object"));
625 set_java_object_type (SYMBOL_TYPE (sym
));
627 return java_object_type
;
631 get_java_object_header_size (struct gdbarch
*gdbarch
)
633 struct type
*objtype
= get_java_object_type ();
635 return (2 * gdbarch_ptr_bit (gdbarch
) / TARGET_CHAR_BIT
);
637 return TYPE_LENGTH (objtype
);
641 is_object_type (struct type
*type
)
643 CHECK_TYPEDEF (type
);
644 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
646 struct type
*ttype
= check_typedef (TYPE_TARGET_TYPE (type
));
648 if (TYPE_CODE (ttype
) != TYPE_CODE_STRUCT
)
650 while (TYPE_N_BASECLASSES (ttype
) > 0)
651 ttype
= TYPE_BASECLASS (ttype
, 0);
652 name
= TYPE_TAG_NAME (ttype
);
653 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
655 name
= TYPE_NFIELDS (ttype
) > 0 ? TYPE_FIELD_NAME (ttype
, 0) : (char *) 0;
656 if (name
!= NULL
&& strcmp (name
, "vtable") == 0)
658 if (java_object_type
== NULL
)
659 set_java_object_type (type
);
667 java_primitive_type (struct gdbarch
*gdbarch
, int signature
)
669 const struct builtin_java_type
*builtin
= builtin_java_type (gdbarch
);
674 return builtin
->builtin_byte
;
676 return builtin
->builtin_short
;
678 return builtin
->builtin_int
;
680 return builtin
->builtin_long
;
682 return builtin
->builtin_boolean
;
684 return builtin
->builtin_char
;
686 return builtin
->builtin_float
;
688 return builtin
->builtin_double
;
690 return builtin
->builtin_void
;
692 error (_("unknown signature '%c' for primitive type"), (char) signature
);
695 /* If name[0 .. namelen-1] is the name of a primitive Java type,
696 return that type. Otherwise, return NULL. */
699 java_primitive_type_from_name (struct gdbarch
*gdbarch
,
700 char *name
, int namelen
)
702 const struct builtin_java_type
*builtin
= builtin_java_type (gdbarch
);
707 if (namelen
== 4 && memcmp (name
, "byte", 4) == 0)
708 return builtin
->builtin_byte
;
709 if (namelen
== 7 && memcmp (name
, "boolean", 7) == 0)
710 return builtin
->builtin_boolean
;
713 if (namelen
== 4 && memcmp (name
, "char", 4) == 0)
714 return builtin
->builtin_char
;
716 if (namelen
== 6 && memcmp (name
, "double", 6) == 0)
717 return builtin
->builtin_double
;
720 if (namelen
== 5 && memcmp (name
, "float", 5) == 0)
721 return builtin
->builtin_float
;
724 if (namelen
== 3 && memcmp (name
, "int", 3) == 0)
725 return builtin
->builtin_int
;
728 if (namelen
== 4 && memcmp (name
, "long", 4) == 0)
729 return builtin
->builtin_long
;
732 if (namelen
== 5 && memcmp (name
, "short", 5) == 0)
733 return builtin
->builtin_short
;
736 if (namelen
== 4 && memcmp (name
, "void", 4) == 0)
737 return builtin
->builtin_void
;
744 java_primitive_type_name (int signature
)
767 error (_("unknown signature '%c' for primitive type"), (char) signature
);
770 /* Return the length (in bytes) of demangled name of the Java type
771 signature string SIGNATURE. */
774 java_demangled_signature_length (char *signature
)
777 for (; *signature
== '['; signature
++)
778 array
+= 2; /* Two chars for "[]". */
779 switch (signature
[0])
782 /* Subtract 2 for 'L' and ';'. */
783 return strlen (signature
) - 2 + array
;
785 return strlen (java_primitive_type_name (signature
[0])) + array
;
789 /* Demangle the Java type signature SIGNATURE, leaving the result in RESULT. */
792 java_demangled_signature_copy (char *result
, char *signature
)
797 while (*signature
== '[')
802 switch (signature
[0])
805 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
808 for (; *signature
!= ';' && *signature
!= '\0'; signature
++)
810 if (*signature
== '/')
817 ptr
= java_primitive_type_name (signature
[0]);
819 strcpy (result
, ptr
);
830 /* Return the demangled name of the Java type signature string SIGNATURE,
831 as a freshly allocated copy. */
834 java_demangle_type_signature (char *signature
)
836 int length
= java_demangled_signature_length (signature
);
837 char *result
= xmalloc (length
+ 1);
838 java_demangled_signature_copy (result
, signature
);
839 result
[length
] = '\0';
843 /* Return the type of TYPE followed by DIMS pairs of [ ].
844 If DIMS == 0, TYPE is returned. */
847 java_array_type (struct type
*type
, int dims
)
851 /* FIXME This is bogus! Java arrays are not gdb arrays! */
852 type
= lookup_array_range_type (type
, 0, 0);
858 /* Create a Java string in the inferior from a (Utf8) literal. */
860 static struct value
*
861 java_value_string (char *ptr
, int len
)
863 error (_("not implemented - java_value_string")); /* FIXME */
866 /* Print the character C on STREAM as part of the contents of a literal
867 string whose delimiter is QUOTER. Note that that format for printing
868 characters and strings is language specific. */
871 java_emit_char (int c
, struct type
*type
, struct ui_file
*stream
, int quoter
)
877 fprintf_filtered (stream
, "\\%c", c
);
880 fputs_filtered ("\\b", stream
);
883 fputs_filtered ("\\t", stream
);
886 fputs_filtered ("\\n", stream
);
889 fputs_filtered ("\\f", stream
);
892 fputs_filtered ("\\r", stream
);
896 fputc_filtered (c
, stream
);
898 fprintf_filtered (stream
, "\\u%.4x", (unsigned int) c
);
903 static struct value
*
904 evaluate_subexp_java (struct type
*expect_type
, struct expression
*exp
,
905 int *pos
, enum noside noside
)
910 enum exp_opcode op
= exp
->elts
[*pos
].opcode
;
917 if (noside
== EVAL_SKIP
)
920 arg1
= evaluate_subexp_java (NULL_TYPE
, exp
, pos
, EVAL_NORMAL
);
921 if (is_object_type (value_type (arg1
)))
925 type
= type_from_class (exp
->gdbarch
, java_class_from_object (arg1
));
926 arg1
= value_cast (lookup_pointer_type (type
), arg1
);
928 if (noside
== EVAL_SKIP
)
930 return value_ind (arg1
);
932 case BINOP_SUBSCRIPT
:
934 arg1
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
935 arg2
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
936 if (noside
== EVAL_SKIP
)
938 /* If the user attempts to subscript something that is not an
939 array or pointer type (like a plain int variable for example),
940 then report this as an error. */
942 arg1
= coerce_ref (arg1
);
943 type
= check_typedef (value_type (arg1
));
944 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
945 type
= check_typedef (TYPE_TARGET_TYPE (type
));
946 name
= TYPE_NAME (type
);
948 name
= TYPE_TAG_NAME (type
);
949 i
= name
== NULL
? 0 : strlen (name
);
950 if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
951 && i
> 2 && name
[i
- 1] == ']')
953 enum bfd_endian byte_order
= gdbarch_byte_order (exp
->gdbarch
);
956 struct type
*el_type
;
959 struct value
*clas
= java_class_from_object (arg1
);
960 struct value
*temp
= clas
;
961 /* Get CLASS_ELEMENT_TYPE of the array type. */
962 temp
= value_struct_elt (&temp
, NULL
, "methods",
964 deprecated_set_value_type (temp
, value_type (clas
));
965 el_type
= type_from_class (exp
->gdbarch
, temp
);
966 if (TYPE_CODE (el_type
) == TYPE_CODE_STRUCT
)
967 el_type
= lookup_pointer_type (el_type
);
969 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
970 return value_zero (el_type
, VALUE_LVAL (arg1
));
971 address
= value_as_address (arg1
);
972 address
+= get_java_object_header_size (exp
->gdbarch
);
973 read_memory (address
, buf4
, 4);
974 length
= (long) extract_signed_integer (buf4
, 4, byte_order
);
975 index
= (long) value_as_long (arg2
);
976 if (index
>= length
|| index
< 0)
977 error (_("array index (%ld) out of bounds (length: %ld)"),
979 address
= (address
+ 4) + index
* TYPE_LENGTH (el_type
);
980 return value_at (el_type
, address
);
982 else if (TYPE_CODE (type
) == TYPE_CODE_ARRAY
)
984 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
985 return value_zero (TYPE_TARGET_TYPE (type
), VALUE_LVAL (arg1
));
987 return value_subscript (arg1
, value_as_long (arg2
));
990 error (_("cannot subscript something of type `%s'"), name
);
992 error (_("cannot subscript requested type"));
996 i
= longest_to_int (exp
->elts
[pc
+ 1].longconst
);
997 (*pos
) += 3 + BYTES_TO_EXP_ELEM (i
+ 1);
998 if (noside
== EVAL_SKIP
)
1000 return java_value_string (&exp
->elts
[pc
+ 2].string
, i
);
1003 arg1
= evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
1004 /* Convert object field (such as TYPE.class) to reference. */
1005 if (TYPE_CODE (value_type (arg1
)) == TYPE_CODE_STRUCT
)
1006 arg1
= value_addr (arg1
);
1012 return evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
1014 return value_from_longest (builtin_type (exp
->gdbarch
)->builtin_int
, 1);
1017 static char *java_demangle (const char *mangled
, int options
)
1019 return cplus_demangle (mangled
, options
| DMGL_JAVA
);
1022 /* Find the member function name of the demangled name NAME. NAME
1023 must be a method name including arguments, in order to correctly
1024 locate the last component.
1026 This function return a pointer to the first dot before the
1027 member function name, or NULL if the name was not of the
1031 java_find_last_component (const char *name
)
1035 /* Find argument list. */
1036 p
= strchr (name
, '(');
1041 /* Back up and find first dot prior to argument list. */
1042 while (p
> name
&& *p
!= '.')
1051 /* Return the name of the class containing method PHYSNAME. */
1054 java_class_name_from_physname (const char *physname
)
1058 char *demangled_name
= java_demangle (physname
, DMGL_PARAMS
| DMGL_ANSI
);
1060 if (demangled_name
== NULL
)
1063 end
= java_find_last_component (demangled_name
);
1066 ret
= xmalloc (end
- demangled_name
+ 1);
1067 memcpy (ret
, demangled_name
, end
- demangled_name
);
1068 ret
[end
- demangled_name
] = '\0';
1071 xfree (demangled_name
);
1075 /* Table mapping opcodes into strings for printing operators
1076 and precedences of the operators. */
1078 const struct op_print java_op_print_tab
[] =
1080 {",", BINOP_COMMA
, PREC_COMMA
, 0},
1081 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
1082 {"||", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
1083 {"&&", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
1084 {"|", BINOP_BITWISE_IOR
, PREC_BITWISE_IOR
, 0},
1085 {"^", BINOP_BITWISE_XOR
, PREC_BITWISE_XOR
, 0},
1086 {"&", BINOP_BITWISE_AND
, PREC_BITWISE_AND
, 0},
1087 {"==", BINOP_EQUAL
, PREC_EQUAL
, 0},
1088 {"!=", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
1089 {"<=", BINOP_LEQ
, PREC_ORDER
, 0},
1090 {">=", BINOP_GEQ
, PREC_ORDER
, 0},
1091 {">", BINOP_GTR
, PREC_ORDER
, 0},
1092 {"<", BINOP_LESS
, PREC_ORDER
, 0},
1093 {">>", BINOP_RSH
, PREC_SHIFT
, 0},
1094 {"<<", BINOP_LSH
, PREC_SHIFT
, 0},
1096 {">>>", BINOP_
? ? ?, PREC_SHIFT
, 0},
1098 {"+", BINOP_ADD
, PREC_ADD
, 0},
1099 {"-", BINOP_SUB
, PREC_ADD
, 0},
1100 {"*", BINOP_MUL
, PREC_MUL
, 0},
1101 {"/", BINOP_DIV
, PREC_MUL
, 0},
1102 {"%", BINOP_REM
, PREC_MUL
, 0},
1103 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
1104 {"!", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
1105 {"~", UNOP_COMPLEMENT
, PREC_PREFIX
, 0},
1106 {"*", UNOP_IND
, PREC_PREFIX
, 0},
1108 {"instanceof", ? ? ?, ? ? ?, 0},
1110 {"++", UNOP_PREINCREMENT
, PREC_PREFIX
, 0},
1111 {"--", UNOP_PREDECREMENT
, PREC_PREFIX
, 0},
1115 enum java_primitive_types
1117 java_primitive_type_int
,
1118 java_primitive_type_short
,
1119 java_primitive_type_long
,
1120 java_primitive_type_byte
,
1121 java_primitive_type_boolean
,
1122 java_primitive_type_char
,
1123 java_primitive_type_float
,
1124 java_primitive_type_double
,
1125 java_primitive_type_void
,
1126 nr_java_primitive_types
1130 java_language_arch_info (struct gdbarch
*gdbarch
,
1131 struct language_arch_info
*lai
)
1133 const struct builtin_java_type
*builtin
= builtin_java_type (gdbarch
);
1135 lai
->string_char_type
= builtin
->builtin_char
;
1136 lai
->primitive_type_vector
1137 = GDBARCH_OBSTACK_CALLOC (gdbarch
, nr_java_primitive_types
+ 1,
1139 lai
->primitive_type_vector
[java_primitive_type_int
]
1140 = builtin
->builtin_int
;
1141 lai
->primitive_type_vector
[java_primitive_type_short
]
1142 = builtin
->builtin_short
;
1143 lai
->primitive_type_vector
[java_primitive_type_long
]
1144 = builtin
->builtin_long
;
1145 lai
->primitive_type_vector
[java_primitive_type_byte
]
1146 = builtin
->builtin_byte
;
1147 lai
->primitive_type_vector
[java_primitive_type_boolean
]
1148 = builtin
->builtin_boolean
;
1149 lai
->primitive_type_vector
[java_primitive_type_char
]
1150 = builtin
->builtin_char
;
1151 lai
->primitive_type_vector
[java_primitive_type_float
]
1152 = builtin
->builtin_float
;
1153 lai
->primitive_type_vector
[java_primitive_type_double
]
1154 = builtin
->builtin_double
;
1155 lai
->primitive_type_vector
[java_primitive_type_void
]
1156 = builtin
->builtin_void
;
1158 lai
->bool_type_symbol
= "boolean";
1159 lai
->bool_type_default
= builtin
->builtin_boolean
;
1162 const struct exp_descriptor exp_descriptor_java
=
1164 print_subexp_standard
,
1165 operator_length_standard
,
1166 operator_check_standard
,
1168 dump_subexp_body_standard
,
1169 evaluate_subexp_java
1172 const struct language_defn java_language_defn
=
1174 "java", /* Language name */
1181 &exp_descriptor_java
,
1185 c_printchar
, /* Print a character constant */
1186 c_printstr
, /* Function to print string constant */
1187 java_emit_char
, /* Function to print a single character */
1188 java_print_type
, /* Print a type using appropriate syntax */
1189 default_print_typedef
, /* Print a typedef using appropriate syntax */
1190 java_val_print
, /* Print a value using appropriate syntax */
1191 java_value_print
, /* Print a top-level value */
1192 NULL
, /* Language specific skip_trampoline */
1193 "this", /* name_of_this */
1194 basic_lookup_symbol_nonlocal
, /* lookup_symbol_nonlocal */
1195 basic_lookup_transparent_type
,/* lookup_transparent_type */
1196 java_demangle
, /* Language specific symbol demangler */
1197 java_class_name_from_physname
,/* Language specific class name */
1198 java_op_print_tab
, /* expression operators for printing */
1199 0, /* not c-style arrays */
1200 0, /* String lower bound */
1201 default_word_break_characters
,
1202 default_make_symbol_completion_list
,
1203 java_language_arch_info
,
1204 default_print_array_index
,
1205 default_pass_by_reference
,
1211 build_java_types (struct gdbarch
*gdbarch
)
1213 struct builtin_java_type
*builtin_java_type
1214 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_java_type
);
1216 builtin_java_type
->builtin_int
1217 = arch_integer_type (gdbarch
, 32, 0, "int");
1218 builtin_java_type
->builtin_short
1219 = arch_integer_type (gdbarch
, 16, 0, "short");
1220 builtin_java_type
->builtin_long
1221 = arch_integer_type (gdbarch
, 64, 0, "long");
1222 builtin_java_type
->builtin_byte
1223 = arch_integer_type (gdbarch
, 8, 0, "byte");
1224 builtin_java_type
->builtin_boolean
1225 = arch_boolean_type (gdbarch
, 8, 0, "boolean");
1226 builtin_java_type
->builtin_char
1227 = arch_character_type (gdbarch
, 16, 1, "char");
1228 builtin_java_type
->builtin_float
1229 = arch_float_type (gdbarch
, 32, "float", NULL
);
1230 builtin_java_type
->builtin_double
1231 = arch_float_type (gdbarch
, 64, "double", NULL
);
1232 builtin_java_type
->builtin_void
1233 = arch_type (gdbarch
, TYPE_CODE_VOID
, 1, "void");
1235 return builtin_java_type
;
1238 static struct gdbarch_data
*java_type_data
;
1240 const struct builtin_java_type
*
1241 builtin_java_type (struct gdbarch
*gdbarch
)
1243 return gdbarch_data (gdbarch
, java_type_data
);
1247 _initialize_java_language (void)
1249 jv_dynamics_objfile_data_key
1250 = register_objfile_data_with_cleanup (NULL
, jv_per_objfile_free
);
1251 jv_type_objfile_data_key
1252 = register_objfile_data_with_cleanup (NULL
, jv_clear_object_type
);
1254 java_type_data
= gdbarch_data_register_post_init (build_java_types
);
1256 add_language (&java_language_defn
);