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, 2011 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 /* An instance of this structure is used to store some data that must
78 struct jv_per_objfile_data
80 /* The expandable dictionary we use. */
81 struct dictionary
*dict
;
84 /* A function called when the dynamics_objfile is freed. We use this
85 to clean up some internal state. */
87 jv_per_objfile_free (struct objfile
*objfile
, void *data
)
89 struct jv_per_objfile_data
*jv_data
= data
;
91 gdb_assert (objfile
== dynamics_objfile
);
92 /* Clean up all our cached state. */
93 dynamics_objfile
= NULL
;
97 dict_free (jv_data
->dict
);
101 /* FIXME: carlton/2003-02-04: This is the main or only caller of
102 allocate_objfile with first argument NULL; as a result, this code
103 breaks every so often. Somebody should write a test case that
104 exercises GDB in various ways (e.g. something involving loading a
105 dynamic library) after this code has been called. */
107 static struct objfile
*
108 get_dynamics_objfile (struct gdbarch
*gdbarch
)
110 if (dynamics_objfile
== NULL
)
112 struct jv_per_objfile_data
*data
;
114 /* Mark it as shared so that it is cleared when the inferior is
116 dynamics_objfile
= allocate_objfile (NULL
, OBJF_SHARED
);
117 dynamics_objfile
->gdbarch
= gdbarch
;
119 data
= XCNEW (struct jv_per_objfile_data
);
120 set_objfile_data (dynamics_objfile
, jv_dynamics_objfile_data_key
, data
);
122 return dynamics_objfile
;
125 static struct symtab
*
126 get_java_class_symtab (struct gdbarch
*gdbarch
)
128 if (class_symtab
== NULL
)
130 struct objfile
*objfile
= get_dynamics_objfile (gdbarch
);
131 struct blockvector
*bv
;
133 struct jv_per_objfile_data
*jv_data
;
135 class_symtab
= allocate_symtab ("<java-classes>", objfile
);
136 class_symtab
->language
= language_java
;
137 bv
= (struct blockvector
*)
138 obstack_alloc (&objfile
->objfile_obstack
,
139 sizeof (struct blockvector
) + sizeof (struct block
*));
140 BLOCKVECTOR_NBLOCKS (bv
) = 1;
141 BLOCKVECTOR (class_symtab
) = bv
;
143 /* Allocate dummy STATIC_BLOCK. */
144 bl
= allocate_block (&objfile
->objfile_obstack
);
145 BLOCK_DICT (bl
) = dict_create_linear (&objfile
->objfile_obstack
,
147 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = bl
;
149 /* Allocate GLOBAL_BLOCK. */
150 bl
= allocate_block (&objfile
->objfile_obstack
);
151 BLOCK_DICT (bl
) = dict_create_hashed_expandable ();
152 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
154 /* Arrange to free the dict. */
155 jv_data
= objfile_data (objfile
, jv_dynamics_objfile_data_key
);
156 jv_data
->dict
= BLOCK_DICT (bl
);
162 add_class_symtab_symbol (struct symbol
*sym
)
164 struct symtab
*symtab
165 = get_java_class_symtab (get_objfile_arch (SYMBOL_SYMTAB (sym
)->objfile
));
166 struct blockvector
*bv
= BLOCKVECTOR (symtab
);
168 dict_add_symbol (BLOCK_DICT (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)), sym
);
171 static struct symbol
*
172 add_class_symbol (struct type
*type
, CORE_ADDR addr
)
176 sym
= (struct symbol
*)
177 obstack_alloc (&dynamics_objfile
->objfile_obstack
, sizeof (struct symbol
));
178 memset (sym
, 0, sizeof (struct symbol
));
179 SYMBOL_SET_LANGUAGE (sym
, language_java
);
180 SYMBOL_SET_LINKAGE_NAME (sym
, TYPE_TAG_NAME (type
));
181 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
182 /* SYMBOL_VALUE (sym) = valu; */
183 SYMBOL_TYPE (sym
) = type
;
184 SYMBOL_DOMAIN (sym
) = STRUCT_DOMAIN
;
185 SYMBOL_VALUE_ADDRESS (sym
) = addr
;
190 java_lookup_class (char *name
)
194 sym
= lookup_symbol (name
, expression_context_block
, STRUCT_DOMAIN
, NULL
);
196 return SYMBOL_TYPE (sym
);
197 /* 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
;
212 temp
= value_struct_elt (&temp
, NULL
, "length", NULL
, "structure");
213 name_length
= (int) value_as_long (temp
);
214 data_addr
= value_address (temp
) + TYPE_LENGTH (value_type (temp
));
215 chrs
= obstack_alloc (obstack
, name_length
+ 1);
216 chrs
[name_length
] = '\0';
217 read_memory (data_addr
, (gdb_byte
*) 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
));
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",
243 CORE_ADDR i
= value_as_address (vtable
);
245 return (int) (i
& 0x7fffffff) == (int) 0x7fffffff;
248 /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
251 type_from_class (struct gdbarch
*gdbarch
, struct value
*clas
)
256 struct objfile
*objfile
;
257 struct value
*utf8_name
;
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
);
271 objfile
= get_dynamics_objfile (gdbarch
);
272 if (java_class_is_primitive (clas
))
277 sig
= value_struct_elt (&temp
, NULL
, "method_count", NULL
, "structure");
278 return java_primitive_type (gdbarch
, value_as_long (sig
));
281 /* Get Class name. */
282 /* If clasloader non-null, prepend loader address. FIXME */
284 utf8_name
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
285 name
= get_java_utf8_name (&objfile
->objfile_obstack
, utf8_name
);
286 for (nptr
= name
; *nptr
!= 0; nptr
++)
292 type
= java_lookup_class (name
);
296 type
= alloc_type (objfile
);
297 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
298 INIT_CPLUS_SPECIFIC (type
);
302 char *signature
= name
;
303 int namelen
= java_demangled_signature_length (signature
);
305 if (namelen
> strlen (name
))
306 name
= obstack_alloc (&objfile
->objfile_obstack
, namelen
+ 1);
307 java_demangled_signature_copy (name
, signature
);
308 name
[namelen
] = '\0';
311 /* Set array element type. */
312 temp
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
313 deprecated_set_value_type (temp
,
314 lookup_pointer_type (value_type (clas
)));
315 TYPE_TARGET_TYPE (type
) = type_from_class (gdbarch
, temp
);
318 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
319 TYPE_TAG_NAME (type
) = name
;
321 add_class_symtab_symbol (add_class_symbol (type
, addr
));
322 return java_link_class_type (gdbarch
, type
, clas
);
325 /* Fill in class TYPE with data from the CLAS value. */
328 java_link_class_type (struct gdbarch
*gdbarch
,
329 struct type
*type
, struct value
*clas
)
332 char *unqualified_name
;
333 char *name
= TYPE_TAG_NAME (type
);
334 int ninterfaces
, nfields
, nmethods
;
335 int type_is_object
= 0;
336 struct fn_field
*fn_fields
;
337 struct fn_fieldlist
*fn_fieldlists
;
338 struct value
*fields
;
339 struct value
*methods
;
340 struct value
*method
= NULL
;
341 struct value
*field
= NULL
;
343 struct objfile
*objfile
= get_dynamics_objfile (gdbarch
);
346 gdb_assert (name
!= NULL
);
347 unqualified_name
= strrchr (name
, '.');
348 if (unqualified_name
== NULL
)
349 unqualified_name
= name
;
352 temp
= value_struct_elt (&temp
, NULL
, "superclass", NULL
, "structure");
353 if (strcmp (name
, "java.lang.Object") == 0)
355 tsuper
= get_java_object_type ();
356 if (tsuper
&& TYPE_CODE (tsuper
) == TYPE_CODE_PTR
)
357 tsuper
= TYPE_TARGET_TYPE (tsuper
);
361 tsuper
= type_from_class (gdbarch
, temp
);
367 ninterfaces
= value_as_long (value_struct_elt (&temp
, NULL
, "interface_len",
370 TYPE_N_BASECLASSES (type
) = (tsuper
== NULL
? 0 : 1) + ninterfaces
;
372 nfields
= value_as_long (value_struct_elt (&temp
, NULL
, "field_count",
374 nfields
+= TYPE_N_BASECLASSES (type
);
375 nfields
++; /* Add one for dummy "class" field. */
376 TYPE_NFIELDS (type
) = nfields
;
377 TYPE_FIELDS (type
) = (struct field
*)
378 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
380 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
382 TYPE_FIELD_PRIVATE_BITS (type
) =
383 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
384 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
386 TYPE_FIELD_PROTECTED_BITS (type
) =
387 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
388 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
390 TYPE_FIELD_IGNORE_BITS (type
) =
391 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
392 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
394 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
395 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
396 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
400 TYPE_BASECLASS (type
, 0) = tsuper
;
402 SET_TYPE_FIELD_PRIVATE (type
, 0);
406 if (i
> 2 && name
[i
- 1] == ']' && tsuper
!= NULL
)
409 TYPE_LENGTH (type
) = TYPE_LENGTH (tsuper
) + 4; /* size with "length" */
414 temp
= value_struct_elt (&temp
, NULL
, "size_in_bytes",
416 TYPE_LENGTH (type
) = value_as_long (temp
);
420 nfields
--; /* First set up dummy "class" field. */
421 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, nfields
), value_address (clas
));
422 TYPE_FIELD_NAME (type
, nfields
) = "class";
423 TYPE_FIELD_TYPE (type
, nfields
) = value_type (clas
);
424 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
426 for (i
= TYPE_N_BASECLASSES (type
); i
< nfields
; i
++)
434 fields
= value_struct_elt (&temp
, NULL
, "fields", NULL
, "structure");
435 field
= value_ind (fields
);
438 { /* Re-use field value for next field. */
440 = value_address (field
) + TYPE_LENGTH (value_type (field
));
442 set_value_address (field
, addr
);
443 set_value_lazy (field
, 1);
446 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
447 TYPE_FIELD_NAME (type
, i
) =
448 get_java_utf8_name (&objfile
->objfile_obstack
, temp
);
450 accflags
= value_as_long (value_struct_elt (&temp
, NULL
, "accflags",
453 temp
= value_struct_elt (&temp
, NULL
, "info", NULL
, "structure");
454 boffset
= value_as_long (value_struct_elt (&temp
, NULL
, "boffset",
456 if (accflags
& 0x0001) /* public access */
460 if (accflags
& 0x0002) /* private access */
462 SET_TYPE_FIELD_PRIVATE (type
, i
);
464 if (accflags
& 0x0004) /* protected access */
466 SET_TYPE_FIELD_PROTECTED (type
, i
);
468 if (accflags
& 0x0008) /* ACC_STATIC */
469 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, i
), boffset
);
471 TYPE_FIELD_BITPOS (type
, i
) = 8 * boffset
;
472 if (accflags
& 0x8000) /* FIELD_UNRESOLVED_FLAG */
474 TYPE_FIELD_TYPE (type
, i
) = get_java_object_type (); /* FIXME */
481 temp
= value_struct_elt (&temp
, NULL
, "type", NULL
, "structure");
482 ftype
= type_from_class (gdbarch
, temp
);
483 if (TYPE_CODE (ftype
) == TYPE_CODE_STRUCT
)
484 ftype
= lookup_pointer_type (ftype
);
485 TYPE_FIELD_TYPE (type
, i
) = ftype
;
490 nmethods
= value_as_long (value_struct_elt (&temp
, NULL
, "method_count",
492 TYPE_NFN_FIELDS_TOTAL (type
) = nmethods
;
493 j
= nmethods
* sizeof (struct fn_field
);
494 fn_fields
= (struct fn_field
*)
495 obstack_alloc (&dynamics_objfile
->objfile_obstack
, j
);
496 memset (fn_fields
, 0, j
);
497 fn_fieldlists
= (struct fn_fieldlist
*)
498 alloca (nmethods
* sizeof (struct fn_fieldlist
));
501 for (i
= 0; i
< nmethods
; i
++)
509 methods
= value_struct_elt (&temp
, NULL
, "methods",
511 method
= value_ind (methods
);
514 { /* Re-use method value for next method. */
516 = value_address (method
) + TYPE_LENGTH (value_type (method
));
518 set_value_address (method
, addr
);
519 set_value_lazy (method
, 1);
522 /* Get method name. */
524 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
525 mname
= get_java_utf8_name (&objfile
->objfile_obstack
, temp
);
526 if (strcmp (mname
, "<init>") == 0)
527 mname
= unqualified_name
;
529 /* Check for an existing method with the same name.
530 * This makes building the fn_fieldslists an O(nmethods**2)
531 * operation. That could be using hashing, but I doubt it
532 * is worth it. Note that we do maintain the order of methods
533 * in the inferior's Method table (as long as that is grouped
534 * by method name), which I think is desirable. --PB */
535 for (k
= 0, j
= TYPE_NFN_FIELDS (type
);;)
538 { /* No match - new method name. */
539 j
= TYPE_NFN_FIELDS (type
)++;
540 fn_fieldlists
[j
].name
= mname
;
541 fn_fieldlists
[j
].length
= 1;
542 fn_fieldlists
[j
].fn_fields
= &fn_fields
[i
];
546 if (strcmp (mname
, fn_fieldlists
[j
].name
) == 0)
547 { /* Found an existing method with the same name. */
550 if (mname
!= unqualified_name
)
551 obstack_free (&objfile
->objfile_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;
567 fn_fields
[k
].type
= lookup_function_type
568 (builtin_java_type (gdbarch
)->builtin_void
);
569 TYPE_CODE (fn_fields
[k
].type
) = TYPE_CODE_METHOD
;
572 j
= TYPE_NFN_FIELDS (type
) * sizeof (struct fn_fieldlist
);
573 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
574 obstack_alloc (&dynamics_objfile
->objfile_obstack
, j
);
575 memcpy (TYPE_FN_FIELDLISTS (type
), fn_fieldlists
, j
);
580 static struct type
*java_object_type
;
582 /* A free function that is attached to the objfile defining
583 java_object_type. This is used to clear the cached type whenever
584 its owning objfile is destroyed. */
586 jv_clear_object_type (struct objfile
*objfile
, void *ignore
)
588 java_object_type
= NULL
;
592 set_java_object_type (struct type
*type
)
594 struct objfile
*owner
;
596 gdb_assert (java_object_type
== NULL
);
598 owner
= TYPE_OBJFILE (type
);
600 set_objfile_data (owner
, jv_type_objfile_data_key
, &java_object_type
);
601 java_object_type
= type
;
605 get_java_object_type (void)
607 if (java_object_type
== NULL
)
611 sym
= lookup_symbol ("java.lang.Object", NULL
, STRUCT_DOMAIN
, NULL
);
613 error (_("cannot find java.lang.Object"));
614 set_java_object_type (SYMBOL_TYPE (sym
));
616 return java_object_type
;
620 get_java_object_header_size (struct gdbarch
*gdbarch
)
622 struct type
*objtype
= get_java_object_type ();
625 return (2 * gdbarch_ptr_bit (gdbarch
) / TARGET_CHAR_BIT
);
627 return TYPE_LENGTH (objtype
);
631 is_object_type (struct type
*type
)
633 CHECK_TYPEDEF (type
);
634 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
636 struct type
*ttype
= check_typedef (TYPE_TARGET_TYPE (type
));
638 if (TYPE_CODE (ttype
) != TYPE_CODE_STRUCT
)
640 while (TYPE_N_BASECLASSES (ttype
) > 0)
641 ttype
= TYPE_BASECLASS (ttype
, 0);
642 name
= TYPE_TAG_NAME (ttype
);
643 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
646 = TYPE_NFIELDS (ttype
) > 0 ? TYPE_FIELD_NAME (ttype
, 0) : (char *) 0;
647 if (name
!= NULL
&& strcmp (name
, "vtable") == 0)
649 if (java_object_type
== NULL
)
650 set_java_object_type (type
);
658 java_primitive_type (struct gdbarch
*gdbarch
, int signature
)
660 const struct builtin_java_type
*builtin
= builtin_java_type (gdbarch
);
665 return builtin
->builtin_byte
;
667 return builtin
->builtin_short
;
669 return builtin
->builtin_int
;
671 return builtin
->builtin_long
;
673 return builtin
->builtin_boolean
;
675 return builtin
->builtin_char
;
677 return builtin
->builtin_float
;
679 return builtin
->builtin_double
;
681 return builtin
->builtin_void
;
683 error (_("unknown signature '%c' for primitive type"), (char) signature
);
686 /* If name[0 .. namelen-1] is the name of a primitive Java type,
687 return that type. Otherwise, return NULL. */
690 java_primitive_type_from_name (struct gdbarch
*gdbarch
,
691 char *name
, int namelen
)
693 const struct builtin_java_type
*builtin
= builtin_java_type (gdbarch
);
698 if (namelen
== 4 && memcmp (name
, "byte", 4) == 0)
699 return builtin
->builtin_byte
;
700 if (namelen
== 7 && memcmp (name
, "boolean", 7) == 0)
701 return builtin
->builtin_boolean
;
704 if (namelen
== 4 && memcmp (name
, "char", 4) == 0)
705 return builtin
->builtin_char
;
708 if (namelen
== 6 && memcmp (name
, "double", 6) == 0)
709 return builtin
->builtin_double
;
712 if (namelen
== 5 && memcmp (name
, "float", 5) == 0)
713 return builtin
->builtin_float
;
716 if (namelen
== 3 && memcmp (name
, "int", 3) == 0)
717 return builtin
->builtin_int
;
720 if (namelen
== 4 && memcmp (name
, "long", 4) == 0)
721 return builtin
->builtin_long
;
724 if (namelen
== 5 && memcmp (name
, "short", 5) == 0)
725 return builtin
->builtin_short
;
728 if (namelen
== 4 && memcmp (name
, "void", 4) == 0)
729 return builtin
->builtin_void
;
736 java_primitive_type_name (int signature
)
759 error (_("unknown signature '%c' for primitive type"), (char) signature
);
762 /* Return the length (in bytes) of demangled name of the Java type
763 signature string SIGNATURE. */
766 java_demangled_signature_length (char *signature
)
770 for (; *signature
== '['; signature
++)
771 array
+= 2; /* Two chars for "[]". */
772 switch (signature
[0])
775 /* Subtract 2 for 'L' and ';'. */
776 return strlen (signature
) - 2 + array
;
778 return strlen (java_primitive_type_name (signature
[0])) + array
;
782 /* Demangle the Java type signature SIGNATURE, leaving the result in
786 java_demangled_signature_copy (char *result
, char *signature
)
792 while (*signature
== '[')
797 switch (signature
[0])
800 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
803 for (; *signature
!= ';' && *signature
!= '\0'; signature
++)
805 if (*signature
== '/')
812 ptr
= java_primitive_type_name (signature
[0]);
814 strcpy (result
, ptr
);
825 /* Return the demangled name of the Java type signature string SIGNATURE,
826 as a freshly allocated copy. */
829 java_demangle_type_signature (char *signature
)
831 int length
= java_demangled_signature_length (signature
);
832 char *result
= xmalloc (length
+ 1);
834 java_demangled_signature_copy (result
, signature
);
835 result
[length
] = '\0';
839 /* Return the type of TYPE followed by DIMS pairs of [ ].
840 If DIMS == 0, TYPE is returned. */
843 java_array_type (struct type
*type
, int dims
)
847 /* FIXME This is bogus! Java arrays are not gdb arrays! */
848 type
= lookup_array_range_type (type
, 0, 0);
854 /* Create a Java string in the inferior from a (Utf8) literal. */
856 static struct value
*
857 java_value_string (char *ptr
, int len
)
859 error (_("not implemented - java_value_string")); /* FIXME */
862 /* Print the character C on STREAM as part of the contents of a literal
863 string whose delimiter is QUOTER. Note that that format for printing
864 characters and strings is language specific. */
867 java_emit_char (int c
, struct type
*type
, struct ui_file
*stream
, int quoter
)
873 fprintf_filtered (stream
, "\\%c", c
);
876 fputs_filtered ("\\b", stream
);
879 fputs_filtered ("\\t", stream
);
882 fputs_filtered ("\\n", stream
);
885 fputs_filtered ("\\f", stream
);
888 fputs_filtered ("\\r", stream
);
892 fputc_filtered (c
, stream
);
894 fprintf_filtered (stream
, "\\u%.4x", (unsigned int) c
);
899 static struct value
*
900 evaluate_subexp_java (struct type
*expect_type
, struct expression
*exp
,
901 int *pos
, enum noside noside
)
906 enum exp_opcode op
= exp
->elts
[*pos
].opcode
;
914 if (noside
== EVAL_SKIP
)
917 arg1
= evaluate_subexp_java (NULL_TYPE
, exp
, pos
, EVAL_NORMAL
);
918 if (is_object_type (value_type (arg1
)))
922 type
= type_from_class (exp
->gdbarch
, java_class_from_object (arg1
));
923 arg1
= value_cast (lookup_pointer_type (type
), arg1
);
925 return value_ind (arg1
);
927 case BINOP_SUBSCRIPT
:
929 arg1
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
930 arg2
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
931 if (noside
== EVAL_SKIP
)
933 /* If the user attempts to subscript something that is not an
934 array or pointer type (like a plain int variable for example),
935 then report this as an error. */
937 arg1
= coerce_ref (arg1
);
938 type
= check_typedef (value_type (arg1
));
939 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
940 type
= check_typedef (TYPE_TARGET_TYPE (type
));
941 name
= TYPE_NAME (type
);
943 name
= TYPE_TAG_NAME (type
);
944 i
= name
== NULL
? 0 : strlen (name
);
945 if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
946 && i
> 2 && name
[i
- 1] == ']')
948 enum bfd_endian byte_order
= gdbarch_byte_order (exp
->gdbarch
);
951 struct type
*el_type
;
954 struct value
*clas
= java_class_from_object (arg1
);
955 struct value
*temp
= clas
;
956 /* Get CLASS_ELEMENT_TYPE of the array type. */
957 temp
= value_struct_elt (&temp
, NULL
, "methods",
959 deprecated_set_value_type (temp
, value_type (clas
));
960 el_type
= type_from_class (exp
->gdbarch
, temp
);
961 if (TYPE_CODE (el_type
) == TYPE_CODE_STRUCT
)
962 el_type
= lookup_pointer_type (el_type
);
964 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
965 return value_zero (el_type
, VALUE_LVAL (arg1
));
966 address
= value_as_address (arg1
);
967 address
+= get_java_object_header_size (exp
->gdbarch
);
968 read_memory (address
, buf4
, 4);
969 length
= (long) extract_signed_integer (buf4
, 4, byte_order
);
970 index
= (long) value_as_long (arg2
);
971 if (index
>= length
|| index
< 0)
972 error (_("array index (%ld) out of bounds (length: %ld)"),
974 address
= (address
+ 4) + index
* TYPE_LENGTH (el_type
);
975 return value_at (el_type
, address
);
977 else if (TYPE_CODE (type
) == TYPE_CODE_ARRAY
)
979 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
980 return value_zero (TYPE_TARGET_TYPE (type
), VALUE_LVAL (arg1
));
982 return value_subscript (arg1
, value_as_long (arg2
));
985 error (_("cannot subscript something of type `%s'"), name
);
987 error (_("cannot subscript requested type"));
991 i
= longest_to_int (exp
->elts
[pc
+ 1].longconst
);
992 (*pos
) += 3 + BYTES_TO_EXP_ELEM (i
+ 1);
993 if (noside
== EVAL_SKIP
)
995 return java_value_string (&exp
->elts
[pc
+ 2].string
, i
);
998 arg1
= evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
999 /* Convert object field (such as TYPE.class) to reference. */
1000 if (TYPE_CODE (value_type (arg1
)) == TYPE_CODE_STRUCT
)
1001 arg1
= value_addr (arg1
);
1007 return evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
1009 return value_from_longest (builtin_type (exp
->gdbarch
)->builtin_int
, 1);
1012 static char *java_demangle (const char *mangled
, int options
)
1014 return cplus_demangle (mangled
, options
| DMGL_JAVA
);
1017 /* Find the member function name of the demangled name NAME. NAME
1018 must be a method name including arguments, in order to correctly
1019 locate the last component.
1021 This function return a pointer to the first dot before the
1022 member function name, or NULL if the name was not of the
1026 java_find_last_component (const char *name
)
1030 /* Find argument list. */
1031 p
= strchr (name
, '(');
1036 /* Back up and find first dot prior to argument list. */
1037 while (p
> name
&& *p
!= '.')
1046 /* Return the name of the class containing method PHYSNAME. */
1049 java_class_name_from_physname (const char *physname
)
1053 char *demangled_name
= java_demangle (physname
, DMGL_PARAMS
| DMGL_ANSI
);
1055 if (demangled_name
== NULL
)
1058 end
= java_find_last_component (demangled_name
);
1061 ret
= xmalloc (end
- demangled_name
+ 1);
1062 memcpy (ret
, demangled_name
, end
- demangled_name
);
1063 ret
[end
- demangled_name
] = '\0';
1066 xfree (demangled_name
);
1070 /* Table mapping opcodes into strings for printing operators
1071 and precedences of the operators. */
1073 const struct op_print java_op_print_tab
[] =
1075 {",", BINOP_COMMA
, PREC_COMMA
, 0},
1076 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
1077 {"||", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
1078 {"&&", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
1079 {"|", BINOP_BITWISE_IOR
, PREC_BITWISE_IOR
, 0},
1080 {"^", BINOP_BITWISE_XOR
, PREC_BITWISE_XOR
, 0},
1081 {"&", BINOP_BITWISE_AND
, PREC_BITWISE_AND
, 0},
1082 {"==", BINOP_EQUAL
, PREC_EQUAL
, 0},
1083 {"!=", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
1084 {"<=", BINOP_LEQ
, PREC_ORDER
, 0},
1085 {">=", BINOP_GEQ
, PREC_ORDER
, 0},
1086 {">", BINOP_GTR
, PREC_ORDER
, 0},
1087 {"<", BINOP_LESS
, PREC_ORDER
, 0},
1088 {">>", BINOP_RSH
, PREC_SHIFT
, 0},
1089 {"<<", BINOP_LSH
, PREC_SHIFT
, 0},
1090 {"+", BINOP_ADD
, PREC_ADD
, 0},
1091 {"-", BINOP_SUB
, PREC_ADD
, 0},
1092 {"*", BINOP_MUL
, PREC_MUL
, 0},
1093 {"/", BINOP_DIV
, PREC_MUL
, 0},
1094 {"%", BINOP_REM
, PREC_MUL
, 0},
1095 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
1096 {"!", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
1097 {"~", UNOP_COMPLEMENT
, PREC_PREFIX
, 0},
1098 {"*", UNOP_IND
, PREC_PREFIX
, 0},
1099 {"++", UNOP_PREINCREMENT
, PREC_PREFIX
, 0},
1100 {"--", UNOP_PREDECREMENT
, PREC_PREFIX
, 0},
1104 enum java_primitive_types
1106 java_primitive_type_int
,
1107 java_primitive_type_short
,
1108 java_primitive_type_long
,
1109 java_primitive_type_byte
,
1110 java_primitive_type_boolean
,
1111 java_primitive_type_char
,
1112 java_primitive_type_float
,
1113 java_primitive_type_double
,
1114 java_primitive_type_void
,
1115 nr_java_primitive_types
1119 java_language_arch_info (struct gdbarch
*gdbarch
,
1120 struct language_arch_info
*lai
)
1122 const struct builtin_java_type
*builtin
= builtin_java_type (gdbarch
);
1124 lai
->string_char_type
= builtin
->builtin_char
;
1125 lai
->primitive_type_vector
1126 = GDBARCH_OBSTACK_CALLOC (gdbarch
, nr_java_primitive_types
+ 1,
1128 lai
->primitive_type_vector
[java_primitive_type_int
]
1129 = builtin
->builtin_int
;
1130 lai
->primitive_type_vector
[java_primitive_type_short
]
1131 = builtin
->builtin_short
;
1132 lai
->primitive_type_vector
[java_primitive_type_long
]
1133 = builtin
->builtin_long
;
1134 lai
->primitive_type_vector
[java_primitive_type_byte
]
1135 = builtin
->builtin_byte
;
1136 lai
->primitive_type_vector
[java_primitive_type_boolean
]
1137 = builtin
->builtin_boolean
;
1138 lai
->primitive_type_vector
[java_primitive_type_char
]
1139 = builtin
->builtin_char
;
1140 lai
->primitive_type_vector
[java_primitive_type_float
]
1141 = builtin
->builtin_float
;
1142 lai
->primitive_type_vector
[java_primitive_type_double
]
1143 = builtin
->builtin_double
;
1144 lai
->primitive_type_vector
[java_primitive_type_void
]
1145 = builtin
->builtin_void
;
1147 lai
->bool_type_symbol
= "boolean";
1148 lai
->bool_type_default
= builtin
->builtin_boolean
;
1151 const struct exp_descriptor exp_descriptor_java
=
1153 print_subexp_standard
,
1154 operator_length_standard
,
1155 operator_check_standard
,
1157 dump_subexp_body_standard
,
1158 evaluate_subexp_java
1161 const struct language_defn java_language_defn
=
1163 "java", /* Language name */
1170 &exp_descriptor_java
,
1174 c_printchar
, /* Print a character constant */
1175 c_printstr
, /* Function to print string constant */
1176 java_emit_char
, /* Function to print a single character */
1177 java_print_type
, /* Print a type using appropriate syntax */
1178 default_print_typedef
, /* Print a typedef using appropriate syntax */
1179 java_val_print
, /* Print a value using appropriate syntax */
1180 java_value_print
, /* Print a top-level value */
1181 NULL
, /* Language specific skip_trampoline */
1182 "this", /* name_of_this */
1183 basic_lookup_symbol_nonlocal
, /* lookup_symbol_nonlocal */
1184 basic_lookup_transparent_type
,/* lookup_transparent_type */
1185 java_demangle
, /* Language specific symbol demangler */
1186 java_class_name_from_physname
,/* Language specific class name */
1187 java_op_print_tab
, /* expression operators for printing */
1188 0, /* not c-style arrays */
1189 0, /* String lower bound */
1190 default_word_break_characters
,
1191 default_make_symbol_completion_list
,
1192 java_language_arch_info
,
1193 default_print_array_index
,
1194 default_pass_by_reference
,
1200 build_java_types (struct gdbarch
*gdbarch
)
1202 struct builtin_java_type
*builtin_java_type
1203 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_java_type
);
1205 builtin_java_type
->builtin_int
1206 = arch_integer_type (gdbarch
, 32, 0, "int");
1207 builtin_java_type
->builtin_short
1208 = arch_integer_type (gdbarch
, 16, 0, "short");
1209 builtin_java_type
->builtin_long
1210 = arch_integer_type (gdbarch
, 64, 0, "long");
1211 builtin_java_type
->builtin_byte
1212 = arch_integer_type (gdbarch
, 8, 0, "byte");
1213 builtin_java_type
->builtin_boolean
1214 = arch_boolean_type (gdbarch
, 8, 0, "boolean");
1215 builtin_java_type
->builtin_char
1216 = arch_character_type (gdbarch
, 16, 1, "char");
1217 builtin_java_type
->builtin_float
1218 = arch_float_type (gdbarch
, 32, "float", NULL
);
1219 builtin_java_type
->builtin_double
1220 = arch_float_type (gdbarch
, 64, "double", NULL
);
1221 builtin_java_type
->builtin_void
1222 = arch_type (gdbarch
, TYPE_CODE_VOID
, 1, "void");
1224 return builtin_java_type
;
1227 static struct gdbarch_data
*java_type_data
;
1229 const struct builtin_java_type
*
1230 builtin_java_type (struct gdbarch
*gdbarch
)
1232 return gdbarch_data (gdbarch
, java_type_data
);
1236 _initialize_java_language (void)
1238 jv_dynamics_objfile_data_key
1239 = register_objfile_data_with_cleanup (NULL
, jv_per_objfile_free
);
1240 jv_type_objfile_data_key
1241 = register_objfile_data_with_cleanup (NULL
, jv_clear_object_type
);
1243 java_type_data
= gdbarch_data_register_post_init (build_java_types
);
1245 add_language (&java_language_defn
);