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 /* 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
;
124 class_symtab
= allocate_symtab ("<java-classes>", objfile
);
125 class_symtab
->language
= language_java
;
126 bv
= (struct blockvector
*)
127 obstack_alloc (&objfile
->objfile_obstack
,
128 sizeof (struct blockvector
) + sizeof (struct block
*));
129 BLOCKVECTOR_NBLOCKS (bv
) = 1;
130 BLOCKVECTOR (class_symtab
) = bv
;
132 /* Allocate dummy STATIC_BLOCK. */
133 bl
= allocate_block (&objfile
->objfile_obstack
);
134 BLOCK_DICT (bl
) = dict_create_linear (&objfile
->objfile_obstack
,
136 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = bl
;
138 /* Allocate GLOBAL_BLOCK. */
139 bl
= allocate_block (&objfile
->objfile_obstack
);
140 BLOCK_DICT (bl
) = dict_create_hashed_expandable ();
141 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
142 class_symtab
->free_func
= free_class_block
;
148 add_class_symtab_symbol (struct symbol
*sym
)
150 struct symtab
*symtab
151 = get_java_class_symtab (get_objfile_arch (SYMBOL_SYMTAB (sym
)->objfile
));
152 struct blockvector
*bv
= BLOCKVECTOR (symtab
);
154 dict_add_symbol (BLOCK_DICT (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)), sym
);
157 static struct symbol
*
158 add_class_symbol (struct type
*type
, CORE_ADDR addr
)
162 sym
= (struct symbol
*)
163 obstack_alloc (&dynamics_objfile
->objfile_obstack
, sizeof (struct symbol
));
164 memset (sym
, 0, sizeof (struct symbol
));
165 SYMBOL_SET_LANGUAGE (sym
, language_java
);
166 SYMBOL_SET_LINKAGE_NAME (sym
, TYPE_TAG_NAME (type
));
167 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
168 /* SYMBOL_VALUE (sym) = valu; */
169 SYMBOL_TYPE (sym
) = type
;
170 SYMBOL_DOMAIN (sym
) = STRUCT_DOMAIN
;
171 SYMBOL_VALUE_ADDRESS (sym
) = addr
;
175 /* Free the dynamic symbols block. */
177 free_class_block (struct symtab
*symtab
)
179 struct blockvector
*bv
= BLOCKVECTOR (symtab
);
180 struct block
*bl
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
182 dict_free (BLOCK_DICT (bl
));
186 java_lookup_class (char *name
)
190 sym
= lookup_symbol (name
, expression_context_block
, STRUCT_DOMAIN
, NULL
);
192 return SYMBOL_TYPE (sym
);
193 /* FIXME - should search inferior's symbol table. */
197 /* Return a nul-terminated string (allocated on OBSTACK) for
198 a name given by NAME (which has type Utf8Const*). */
201 get_java_utf8_name (struct obstack
*obstack
, struct value
*name
)
204 struct value
*temp
= name
;
208 temp
= value_struct_elt (&temp
, NULL
, "length", NULL
, "structure");
209 name_length
= (int) value_as_long (temp
);
210 data_addr
= value_address (temp
) + TYPE_LENGTH (value_type (temp
));
211 chrs
= obstack_alloc (obstack
, name_length
+ 1);
212 chrs
[name_length
] = '\0';
213 read_memory (data_addr
, (gdb_byte
*) chrs
, name_length
);
218 java_class_from_object (struct value
*obj_val
)
220 /* This is all rather inefficient, since the offsets of vtable and
221 class are fixed. FIXME */
222 struct value
*vtable_val
;
224 if (TYPE_CODE (value_type (obj_val
)) == TYPE_CODE_PTR
225 && TYPE_LENGTH (TYPE_TARGET_TYPE (value_type (obj_val
))) == 0)
226 obj_val
= value_at (get_java_object_type (),
227 value_as_address (obj_val
));
229 vtable_val
= value_struct_elt (&obj_val
, NULL
, "vtable", NULL
, "structure");
230 return value_struct_elt (&vtable_val
, NULL
, "class", NULL
, "structure");
233 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
235 java_class_is_primitive (struct value
*clas
)
237 struct value
*vtable
= value_struct_elt (&clas
, NULL
, "vtable",
239 CORE_ADDR i
= value_as_address (vtable
);
241 return (int) (i
& 0x7fffffff) == (int) 0x7fffffff;
244 /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
247 type_from_class (struct gdbarch
*gdbarch
, struct value
*clas
)
252 struct objfile
*objfile
;
253 struct value
*utf8_name
;
258 type
= check_typedef (value_type (clas
));
259 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
261 if (value_logical_not (clas
))
263 clas
= value_ind (clas
);
265 addr
= value_address (clas
);
267 objfile
= get_dynamics_objfile (gdbarch
);
268 if (java_class_is_primitive (clas
))
273 sig
= value_struct_elt (&temp
, NULL
, "method_count", NULL
, "structure");
274 return java_primitive_type (gdbarch
, value_as_long (sig
));
277 /* Get Class name. */
278 /* If clasloader non-null, prepend loader address. FIXME */
280 utf8_name
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
281 name
= get_java_utf8_name (&objfile
->objfile_obstack
, utf8_name
);
282 for (nptr
= name
; *nptr
!= 0; nptr
++)
288 type
= java_lookup_class (name
);
292 type
= alloc_type (objfile
);
293 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
294 INIT_CPLUS_SPECIFIC (type
);
298 char *signature
= name
;
299 int namelen
= java_demangled_signature_length (signature
);
301 if (namelen
> strlen (name
))
302 name
= obstack_alloc (&objfile
->objfile_obstack
, namelen
+ 1);
303 java_demangled_signature_copy (name
, signature
);
304 name
[namelen
] = '\0';
307 /* Set array element type. */
308 temp
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
309 deprecated_set_value_type (temp
,
310 lookup_pointer_type (value_type (clas
)));
311 TYPE_TARGET_TYPE (type
) = type_from_class (gdbarch
, temp
);
314 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
315 TYPE_TAG_NAME (type
) = name
;
317 add_class_symtab_symbol (add_class_symbol (type
, addr
));
318 return java_link_class_type (gdbarch
, type
, clas
);
321 /* Fill in class TYPE with data from the CLAS value. */
324 java_link_class_type (struct gdbarch
*gdbarch
,
325 struct type
*type
, struct value
*clas
)
328 char *unqualified_name
;
329 char *name
= TYPE_TAG_NAME (type
);
330 int ninterfaces
, nfields
, nmethods
;
331 int type_is_object
= 0;
332 struct fn_field
*fn_fields
;
333 struct fn_fieldlist
*fn_fieldlists
;
334 struct value
*fields
;
335 struct value
*methods
;
336 struct value
*method
= NULL
;
337 struct value
*field
= NULL
;
339 struct objfile
*objfile
= get_dynamics_objfile (gdbarch
);
342 gdb_assert (name
!= NULL
);
343 unqualified_name
= strrchr (name
, '.');
344 if (unqualified_name
== NULL
)
345 unqualified_name
= name
;
348 temp
= value_struct_elt (&temp
, NULL
, "superclass", NULL
, "structure");
349 if (strcmp (name
, "java.lang.Object") == 0)
351 tsuper
= get_java_object_type ();
352 if (tsuper
&& TYPE_CODE (tsuper
) == TYPE_CODE_PTR
)
353 tsuper
= TYPE_TARGET_TYPE (tsuper
);
357 tsuper
= type_from_class (gdbarch
, temp
);
363 ninterfaces
= value_as_long (value_struct_elt (&temp
, NULL
, "interface_len",
366 TYPE_N_BASECLASSES (type
) = (tsuper
== NULL
? 0 : 1) + ninterfaces
;
368 nfields
= value_as_long (value_struct_elt (&temp
, NULL
, "field_count",
370 nfields
+= TYPE_N_BASECLASSES (type
);
371 nfields
++; /* Add one for dummy "class" field. */
372 TYPE_NFIELDS (type
) = nfields
;
373 TYPE_FIELDS (type
) = (struct field
*)
374 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
376 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
378 TYPE_FIELD_PRIVATE_BITS (type
) =
379 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
380 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
382 TYPE_FIELD_PROTECTED_BITS (type
) =
383 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
384 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
386 TYPE_FIELD_IGNORE_BITS (type
) =
387 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
388 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
390 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
391 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
392 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
396 TYPE_BASECLASS (type
, 0) = tsuper
;
398 SET_TYPE_FIELD_PRIVATE (type
, 0);
402 if (i
> 2 && name
[i
- 1] == ']' && tsuper
!= NULL
)
405 TYPE_LENGTH (type
) = TYPE_LENGTH (tsuper
) + 4; /* size with "length" */
410 temp
= value_struct_elt (&temp
, NULL
, "size_in_bytes",
412 TYPE_LENGTH (type
) = value_as_long (temp
);
416 nfields
--; /* First set up dummy "class" field. */
417 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, nfields
), value_address (clas
));
418 TYPE_FIELD_NAME (type
, nfields
) = "class";
419 TYPE_FIELD_TYPE (type
, nfields
) = value_type (clas
);
420 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
422 for (i
= TYPE_N_BASECLASSES (type
); i
< nfields
; i
++)
430 fields
= value_struct_elt (&temp
, NULL
, "fields", NULL
, "structure");
431 field
= value_ind (fields
);
434 { /* Re-use field value for next field. */
436 = value_address (field
) + TYPE_LENGTH (value_type (field
));
438 set_value_address (field
, addr
);
439 set_value_lazy (field
, 1);
442 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
443 TYPE_FIELD_NAME (type
, i
) =
444 get_java_utf8_name (&objfile
->objfile_obstack
, temp
);
446 accflags
= value_as_long (value_struct_elt (&temp
, NULL
, "accflags",
449 temp
= value_struct_elt (&temp
, NULL
, "info", NULL
, "structure");
450 boffset
= value_as_long (value_struct_elt (&temp
, NULL
, "boffset",
452 if (accflags
& 0x0001) /* public access */
456 if (accflags
& 0x0002) /* private access */
458 SET_TYPE_FIELD_PRIVATE (type
, i
);
460 if (accflags
& 0x0004) /* protected access */
462 SET_TYPE_FIELD_PROTECTED (type
, i
);
464 if (accflags
& 0x0008) /* ACC_STATIC */
465 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, i
), boffset
);
467 TYPE_FIELD_BITPOS (type
, i
) = 8 * boffset
;
468 if (accflags
& 0x8000) /* FIELD_UNRESOLVED_FLAG */
470 TYPE_FIELD_TYPE (type
, i
) = get_java_object_type (); /* FIXME */
477 temp
= value_struct_elt (&temp
, NULL
, "type", NULL
, "structure");
478 ftype
= type_from_class (gdbarch
, temp
);
479 if (TYPE_CODE (ftype
) == TYPE_CODE_STRUCT
)
480 ftype
= lookup_pointer_type (ftype
);
481 TYPE_FIELD_TYPE (type
, i
) = ftype
;
486 nmethods
= value_as_long (value_struct_elt (&temp
, NULL
, "method_count",
488 TYPE_NFN_FIELDS_TOTAL (type
) = nmethods
;
489 j
= nmethods
* sizeof (struct fn_field
);
490 fn_fields
= (struct fn_field
*)
491 obstack_alloc (&dynamics_objfile
->objfile_obstack
, j
);
492 memset (fn_fields
, 0, j
);
493 fn_fieldlists
= (struct fn_fieldlist
*)
494 alloca (nmethods
* sizeof (struct fn_fieldlist
));
497 for (i
= 0; i
< nmethods
; i
++)
505 methods
= value_struct_elt (&temp
, NULL
, "methods",
507 method
= value_ind (methods
);
510 { /* Re-use method value for next method. */
512 = value_address (method
) + TYPE_LENGTH (value_type (method
));
514 set_value_address (method
, addr
);
515 set_value_lazy (method
, 1);
518 /* Get method name. */
520 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
521 mname
= get_java_utf8_name (&objfile
->objfile_obstack
, temp
);
522 if (strcmp (mname
, "<init>") == 0)
523 mname
= unqualified_name
;
525 /* Check for an existing method with the same name.
526 * This makes building the fn_fieldslists an O(nmethods**2)
527 * operation. That could be using hashing, but I doubt it
528 * is worth it. Note that we do maintain the order of methods
529 * in the inferior's Method table (as long as that is grouped
530 * by method name), which I think is desirable. --PB */
531 for (k
= 0, j
= TYPE_NFN_FIELDS (type
);;)
534 { /* No match - new method name. */
535 j
= TYPE_NFN_FIELDS (type
)++;
536 fn_fieldlists
[j
].name
= mname
;
537 fn_fieldlists
[j
].length
= 1;
538 fn_fieldlists
[j
].fn_fields
= &fn_fields
[i
];
542 if (strcmp (mname
, fn_fieldlists
[j
].name
) == 0)
543 { /* Found an existing method with the same name. */
546 if (mname
!= unqualified_name
)
547 obstack_free (&objfile
->objfile_obstack
, mname
);
548 mname
= fn_fieldlists
[j
].name
;
549 fn_fieldlists
[j
].length
++;
550 k
= i
- k
; /* Index of new slot. */
551 /* Shift intervening fn_fields (between k and i) down. */
552 for (l
= i
; l
> k
; l
--)
553 fn_fields
[l
] = fn_fields
[l
- 1];
554 for (l
= TYPE_NFN_FIELDS (type
); --l
> j
;)
555 fn_fieldlists
[l
].fn_fields
++;
558 k
+= fn_fieldlists
[j
].length
;
560 fn_fields
[k
].physname
= "";
561 fn_fields
[k
].is_stub
= 1;
563 fn_fields
[k
].type
= lookup_function_type
564 (builtin_java_type (gdbarch
)->builtin_void
);
565 TYPE_CODE (fn_fields
[k
].type
) = TYPE_CODE_METHOD
;
568 j
= TYPE_NFN_FIELDS (type
) * sizeof (struct fn_fieldlist
);
569 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
570 obstack_alloc (&dynamics_objfile
->objfile_obstack
, j
);
571 memcpy (TYPE_FN_FIELDLISTS (type
), fn_fieldlists
, j
);
576 static struct type
*java_object_type
;
578 /* A free function that is attached to the objfile defining
579 java_object_type. This is used to clear the cached type whenever
580 its owning objfile is destroyed. */
582 jv_clear_object_type (struct objfile
*objfile
, void *ignore
)
584 java_object_type
= NULL
;
588 set_java_object_type (struct type
*type
)
590 struct objfile
*owner
;
592 gdb_assert (java_object_type
== NULL
);
594 owner
= TYPE_OBJFILE (type
);
596 set_objfile_data (owner
, jv_type_objfile_data_key
, &java_object_type
);
597 java_object_type
= type
;
601 get_java_object_type (void)
603 if (java_object_type
== NULL
)
607 sym
= lookup_symbol ("java.lang.Object", NULL
, STRUCT_DOMAIN
, NULL
);
609 error (_("cannot find java.lang.Object"));
610 set_java_object_type (SYMBOL_TYPE (sym
));
612 return java_object_type
;
616 get_java_object_header_size (struct gdbarch
*gdbarch
)
618 struct type
*objtype
= get_java_object_type ();
621 return (2 * gdbarch_ptr_bit (gdbarch
) / TARGET_CHAR_BIT
);
623 return TYPE_LENGTH (objtype
);
627 is_object_type (struct type
*type
)
629 CHECK_TYPEDEF (type
);
630 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
632 struct type
*ttype
= check_typedef (TYPE_TARGET_TYPE (type
));
634 if (TYPE_CODE (ttype
) != TYPE_CODE_STRUCT
)
636 while (TYPE_N_BASECLASSES (ttype
) > 0)
637 ttype
= TYPE_BASECLASS (ttype
, 0);
638 name
= TYPE_TAG_NAME (ttype
);
639 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
642 = TYPE_NFIELDS (ttype
) > 0 ? TYPE_FIELD_NAME (ttype
, 0) : (char *) 0;
643 if (name
!= NULL
&& strcmp (name
, "vtable") == 0)
645 if (java_object_type
== NULL
)
646 set_java_object_type (type
);
654 java_primitive_type (struct gdbarch
*gdbarch
, int signature
)
656 const struct builtin_java_type
*builtin
= builtin_java_type (gdbarch
);
661 return builtin
->builtin_byte
;
663 return builtin
->builtin_short
;
665 return builtin
->builtin_int
;
667 return builtin
->builtin_long
;
669 return builtin
->builtin_boolean
;
671 return builtin
->builtin_char
;
673 return builtin
->builtin_float
;
675 return builtin
->builtin_double
;
677 return builtin
->builtin_void
;
679 error (_("unknown signature '%c' for primitive type"), (char) signature
);
682 /* If name[0 .. namelen-1] is the name of a primitive Java type,
683 return that type. Otherwise, return NULL. */
686 java_primitive_type_from_name (struct gdbarch
*gdbarch
,
687 char *name
, int namelen
)
689 const struct builtin_java_type
*builtin
= builtin_java_type (gdbarch
);
694 if (namelen
== 4 && memcmp (name
, "byte", 4) == 0)
695 return builtin
->builtin_byte
;
696 if (namelen
== 7 && memcmp (name
, "boolean", 7) == 0)
697 return builtin
->builtin_boolean
;
700 if (namelen
== 4 && memcmp (name
, "char", 4) == 0)
701 return builtin
->builtin_char
;
704 if (namelen
== 6 && memcmp (name
, "double", 6) == 0)
705 return builtin
->builtin_double
;
708 if (namelen
== 5 && memcmp (name
, "float", 5) == 0)
709 return builtin
->builtin_float
;
712 if (namelen
== 3 && memcmp (name
, "int", 3) == 0)
713 return builtin
->builtin_int
;
716 if (namelen
== 4 && memcmp (name
, "long", 4) == 0)
717 return builtin
->builtin_long
;
720 if (namelen
== 5 && memcmp (name
, "short", 5) == 0)
721 return builtin
->builtin_short
;
724 if (namelen
== 4 && memcmp (name
, "void", 4) == 0)
725 return builtin
->builtin_void
;
732 java_primitive_type_name (int signature
)
755 error (_("unknown signature '%c' for primitive type"), (char) signature
);
758 /* Return the length (in bytes) of demangled name of the Java type
759 signature string SIGNATURE. */
762 java_demangled_signature_length (char *signature
)
766 for (; *signature
== '['; signature
++)
767 array
+= 2; /* Two chars for "[]". */
768 switch (signature
[0])
771 /* Subtract 2 for 'L' and ';'. */
772 return strlen (signature
) - 2 + array
;
774 return strlen (java_primitive_type_name (signature
[0])) + array
;
778 /* Demangle the Java type signature SIGNATURE, leaving the result in
782 java_demangled_signature_copy (char *result
, char *signature
)
788 while (*signature
== '[')
793 switch (signature
[0])
796 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
799 for (; *signature
!= ';' && *signature
!= '\0'; signature
++)
801 if (*signature
== '/')
808 ptr
= java_primitive_type_name (signature
[0]);
810 strcpy (result
, ptr
);
821 /* Return the demangled name of the Java type signature string SIGNATURE,
822 as a freshly allocated copy. */
825 java_demangle_type_signature (char *signature
)
827 int length
= java_demangled_signature_length (signature
);
828 char *result
= xmalloc (length
+ 1);
830 java_demangled_signature_copy (result
, signature
);
831 result
[length
] = '\0';
835 /* Return the type of TYPE followed by DIMS pairs of [ ].
836 If DIMS == 0, TYPE is returned. */
839 java_array_type (struct type
*type
, int dims
)
843 /* FIXME This is bogus! Java arrays are not gdb arrays! */
844 type
= lookup_array_range_type (type
, 0, 0);
850 /* Create a Java string in the inferior from a (Utf8) literal. */
852 static struct value
*
853 java_value_string (char *ptr
, int len
)
855 error (_("not implemented - java_value_string")); /* FIXME */
858 /* Print the character C on STREAM as part of the contents of a literal
859 string whose delimiter is QUOTER. Note that that format for printing
860 characters and strings is language specific. */
863 java_emit_char (int c
, struct type
*type
, struct ui_file
*stream
, int quoter
)
869 fprintf_filtered (stream
, "\\%c", c
);
872 fputs_filtered ("\\b", stream
);
875 fputs_filtered ("\\t", stream
);
878 fputs_filtered ("\\n", stream
);
881 fputs_filtered ("\\f", stream
);
884 fputs_filtered ("\\r", stream
);
888 fputc_filtered (c
, stream
);
890 fprintf_filtered (stream
, "\\u%.4x", (unsigned int) c
);
895 static struct value
*
896 evaluate_subexp_java (struct type
*expect_type
, struct expression
*exp
,
897 int *pos
, enum noside noside
)
902 enum exp_opcode op
= exp
->elts
[*pos
].opcode
;
910 if (noside
== EVAL_SKIP
)
913 arg1
= evaluate_subexp_java (NULL_TYPE
, exp
, pos
, EVAL_NORMAL
);
914 if (is_object_type (value_type (arg1
)))
918 type
= type_from_class (exp
->gdbarch
, java_class_from_object (arg1
));
919 arg1
= value_cast (lookup_pointer_type (type
), arg1
);
921 return value_ind (arg1
);
923 case BINOP_SUBSCRIPT
:
925 arg1
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
926 arg2
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
927 if (noside
== EVAL_SKIP
)
929 /* If the user attempts to subscript something that is not an
930 array or pointer type (like a plain int variable for example),
931 then report this as an error. */
933 arg1
= coerce_ref (arg1
);
934 type
= check_typedef (value_type (arg1
));
935 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
936 type
= check_typedef (TYPE_TARGET_TYPE (type
));
937 name
= TYPE_NAME (type
);
939 name
= TYPE_TAG_NAME (type
);
940 i
= name
== NULL
? 0 : strlen (name
);
941 if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
942 && i
> 2 && name
[i
- 1] == ']')
944 enum bfd_endian byte_order
= gdbarch_byte_order (exp
->gdbarch
);
947 struct type
*el_type
;
950 struct value
*clas
= java_class_from_object (arg1
);
951 struct value
*temp
= clas
;
952 /* Get CLASS_ELEMENT_TYPE of the array type. */
953 temp
= value_struct_elt (&temp
, NULL
, "methods",
955 deprecated_set_value_type (temp
, value_type (clas
));
956 el_type
= type_from_class (exp
->gdbarch
, temp
);
957 if (TYPE_CODE (el_type
) == TYPE_CODE_STRUCT
)
958 el_type
= lookup_pointer_type (el_type
);
960 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
961 return value_zero (el_type
, VALUE_LVAL (arg1
));
962 address
= value_as_address (arg1
);
963 address
+= get_java_object_header_size (exp
->gdbarch
);
964 read_memory (address
, buf4
, 4);
965 length
= (long) extract_signed_integer (buf4
, 4, byte_order
);
966 index
= (long) value_as_long (arg2
);
967 if (index
>= length
|| index
< 0)
968 error (_("array index (%ld) out of bounds (length: %ld)"),
970 address
= (address
+ 4) + index
* TYPE_LENGTH (el_type
);
971 return value_at (el_type
, address
);
973 else if (TYPE_CODE (type
) == TYPE_CODE_ARRAY
)
975 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
976 return value_zero (TYPE_TARGET_TYPE (type
), VALUE_LVAL (arg1
));
978 return value_subscript (arg1
, value_as_long (arg2
));
981 error (_("cannot subscript something of type `%s'"), name
);
983 error (_("cannot subscript requested type"));
987 i
= longest_to_int (exp
->elts
[pc
+ 1].longconst
);
988 (*pos
) += 3 + BYTES_TO_EXP_ELEM (i
+ 1);
989 if (noside
== EVAL_SKIP
)
991 return java_value_string (&exp
->elts
[pc
+ 2].string
, i
);
994 arg1
= evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
995 /* Convert object field (such as TYPE.class) to reference. */
996 if (TYPE_CODE (value_type (arg1
)) == TYPE_CODE_STRUCT
)
997 arg1
= value_addr (arg1
);
1003 return evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
1005 return value_from_longest (builtin_type (exp
->gdbarch
)->builtin_int
, 1);
1008 static char *java_demangle (const char *mangled
, int options
)
1010 return cplus_demangle (mangled
, options
| DMGL_JAVA
);
1013 /* Find the member function name of the demangled name NAME. NAME
1014 must be a method name including arguments, in order to correctly
1015 locate the last component.
1017 This function return a pointer to the first dot before the
1018 member function name, or NULL if the name was not of the
1022 java_find_last_component (const char *name
)
1026 /* Find argument list. */
1027 p
= strchr (name
, '(');
1032 /* Back up and find first dot prior to argument list. */
1033 while (p
> name
&& *p
!= '.')
1042 /* Return the name of the class containing method PHYSNAME. */
1045 java_class_name_from_physname (const char *physname
)
1049 char *demangled_name
= java_demangle (physname
, DMGL_PARAMS
| DMGL_ANSI
);
1051 if (demangled_name
== NULL
)
1054 end
= java_find_last_component (demangled_name
);
1057 ret
= xmalloc (end
- demangled_name
+ 1);
1058 memcpy (ret
, demangled_name
, end
- demangled_name
);
1059 ret
[end
- demangled_name
] = '\0';
1062 xfree (demangled_name
);
1066 /* Table mapping opcodes into strings for printing operators
1067 and precedences of the operators. */
1069 const struct op_print java_op_print_tab
[] =
1071 {",", BINOP_COMMA
, PREC_COMMA
, 0},
1072 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
1073 {"||", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
1074 {"&&", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
1075 {"|", BINOP_BITWISE_IOR
, PREC_BITWISE_IOR
, 0},
1076 {"^", BINOP_BITWISE_XOR
, PREC_BITWISE_XOR
, 0},
1077 {"&", BINOP_BITWISE_AND
, PREC_BITWISE_AND
, 0},
1078 {"==", BINOP_EQUAL
, PREC_EQUAL
, 0},
1079 {"!=", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
1080 {"<=", BINOP_LEQ
, PREC_ORDER
, 0},
1081 {">=", BINOP_GEQ
, PREC_ORDER
, 0},
1082 {">", BINOP_GTR
, PREC_ORDER
, 0},
1083 {"<", BINOP_LESS
, PREC_ORDER
, 0},
1084 {">>", BINOP_RSH
, PREC_SHIFT
, 0},
1085 {"<<", BINOP_LSH
, PREC_SHIFT
, 0},
1086 {"+", BINOP_ADD
, PREC_ADD
, 0},
1087 {"-", BINOP_SUB
, PREC_ADD
, 0},
1088 {"*", BINOP_MUL
, PREC_MUL
, 0},
1089 {"/", BINOP_DIV
, PREC_MUL
, 0},
1090 {"%", BINOP_REM
, PREC_MUL
, 0},
1091 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
1092 {"!", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
1093 {"~", UNOP_COMPLEMENT
, PREC_PREFIX
, 0},
1094 {"*", UNOP_IND
, PREC_PREFIX
, 0},
1095 {"++", UNOP_PREINCREMENT
, PREC_PREFIX
, 0},
1096 {"--", UNOP_PREDECREMENT
, PREC_PREFIX
, 0},
1100 enum java_primitive_types
1102 java_primitive_type_int
,
1103 java_primitive_type_short
,
1104 java_primitive_type_long
,
1105 java_primitive_type_byte
,
1106 java_primitive_type_boolean
,
1107 java_primitive_type_char
,
1108 java_primitive_type_float
,
1109 java_primitive_type_double
,
1110 java_primitive_type_void
,
1111 nr_java_primitive_types
1115 java_language_arch_info (struct gdbarch
*gdbarch
,
1116 struct language_arch_info
*lai
)
1118 const struct builtin_java_type
*builtin
= builtin_java_type (gdbarch
);
1120 lai
->string_char_type
= builtin
->builtin_char
;
1121 lai
->primitive_type_vector
1122 = GDBARCH_OBSTACK_CALLOC (gdbarch
, nr_java_primitive_types
+ 1,
1124 lai
->primitive_type_vector
[java_primitive_type_int
]
1125 = builtin
->builtin_int
;
1126 lai
->primitive_type_vector
[java_primitive_type_short
]
1127 = builtin
->builtin_short
;
1128 lai
->primitive_type_vector
[java_primitive_type_long
]
1129 = builtin
->builtin_long
;
1130 lai
->primitive_type_vector
[java_primitive_type_byte
]
1131 = builtin
->builtin_byte
;
1132 lai
->primitive_type_vector
[java_primitive_type_boolean
]
1133 = builtin
->builtin_boolean
;
1134 lai
->primitive_type_vector
[java_primitive_type_char
]
1135 = builtin
->builtin_char
;
1136 lai
->primitive_type_vector
[java_primitive_type_float
]
1137 = builtin
->builtin_float
;
1138 lai
->primitive_type_vector
[java_primitive_type_double
]
1139 = builtin
->builtin_double
;
1140 lai
->primitive_type_vector
[java_primitive_type_void
]
1141 = builtin
->builtin_void
;
1143 lai
->bool_type_symbol
= "boolean";
1144 lai
->bool_type_default
= builtin
->builtin_boolean
;
1147 const struct exp_descriptor exp_descriptor_java
=
1149 print_subexp_standard
,
1150 operator_length_standard
,
1151 operator_check_standard
,
1153 dump_subexp_body_standard
,
1154 evaluate_subexp_java
1157 const struct language_defn java_language_defn
=
1159 "java", /* Language name */
1166 &exp_descriptor_java
,
1170 c_printchar
, /* Print a character constant */
1171 c_printstr
, /* Function to print string constant */
1172 java_emit_char
, /* Function to print a single character */
1173 java_print_type
, /* Print a type using appropriate syntax */
1174 default_print_typedef
, /* Print a typedef using appropriate syntax */
1175 java_val_print
, /* Print a value using appropriate syntax */
1176 java_value_print
, /* Print a top-level value */
1177 NULL
, /* Language specific skip_trampoline */
1178 "this", /* name_of_this */
1179 basic_lookup_symbol_nonlocal
, /* lookup_symbol_nonlocal */
1180 basic_lookup_transparent_type
,/* lookup_transparent_type */
1181 java_demangle
, /* Language specific symbol demangler */
1182 java_class_name_from_physname
,/* Language specific class name */
1183 java_op_print_tab
, /* expression operators for printing */
1184 0, /* not c-style arrays */
1185 0, /* String lower bound */
1186 default_word_break_characters
,
1187 default_make_symbol_completion_list
,
1188 java_language_arch_info
,
1189 default_print_array_index
,
1190 default_pass_by_reference
,
1196 build_java_types (struct gdbarch
*gdbarch
)
1198 struct builtin_java_type
*builtin_java_type
1199 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_java_type
);
1201 builtin_java_type
->builtin_int
1202 = arch_integer_type (gdbarch
, 32, 0, "int");
1203 builtin_java_type
->builtin_short
1204 = arch_integer_type (gdbarch
, 16, 0, "short");
1205 builtin_java_type
->builtin_long
1206 = arch_integer_type (gdbarch
, 64, 0, "long");
1207 builtin_java_type
->builtin_byte
1208 = arch_integer_type (gdbarch
, 8, 0, "byte");
1209 builtin_java_type
->builtin_boolean
1210 = arch_boolean_type (gdbarch
, 8, 0, "boolean");
1211 builtin_java_type
->builtin_char
1212 = arch_character_type (gdbarch
, 16, 1, "char");
1213 builtin_java_type
->builtin_float
1214 = arch_float_type (gdbarch
, 32, "float", NULL
);
1215 builtin_java_type
->builtin_double
1216 = arch_float_type (gdbarch
, 64, "double", NULL
);
1217 builtin_java_type
->builtin_void
1218 = arch_type (gdbarch
, TYPE_CODE_VOID
, 1, "void");
1220 return builtin_java_type
;
1223 static struct gdbarch_data
*java_type_data
;
1225 const struct builtin_java_type
*
1226 builtin_java_type (struct gdbarch
*gdbarch
)
1228 return gdbarch_data (gdbarch
, java_type_data
);
1232 _initialize_java_language (void)
1234 jv_dynamics_objfile_data_key
1235 = register_objfile_data_with_cleanup (NULL
, jv_per_objfile_free
);
1236 jv_type_objfile_data_key
1237 = register_objfile_data_with_cleanup (NULL
, jv_clear_object_type
);
1239 java_type_data
= gdbarch_data_register_post_init (build_java_types
);
1241 add_language (&java_language_defn
);