1 /* Java language support routines for GDB, the GNU debugger.
2 Copyright 1997, 1998, 1999, 2000, 2003 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
24 #include "expression.h"
25 #include "parser-defs.h"
31 #include "gdb_string.h"
40 struct type
*java_int_type
;
41 struct type
*java_byte_type
;
42 struct type
*java_short_type
;
43 struct type
*java_long_type
;
44 struct type
*java_boolean_type
;
45 struct type
*java_char_type
;
46 struct type
*java_float_type
;
47 struct type
*java_double_type
;
48 struct type
*java_void_type
;
52 extern void _initialize_java_language (void);
54 static int java_demangled_signature_length (char *);
55 static void java_demangled_signature_copy (char *, char *);
57 static struct symtab
*get_java_class_symtab (void);
58 static char *get_java_utf8_name (struct obstack
*obstack
, struct value
*name
);
59 static int java_class_is_primitive (struct value
*clas
);
60 static struct type
*java_lookup_type (char *signature
);
61 static struct value
*java_value_string (char *ptr
, int len
);
63 static void java_emit_char (int c
, struct ui_file
* stream
, int quoter
);
65 /* This objfile contains symtabs that have been dynamically created
66 to record dynamically loaded Java classes and dynamically
67 compiled java methods. */
69 static struct objfile
*dynamics_objfile
= NULL
;
71 static struct type
*java_link_class_type (struct type
*, struct value
*);
73 /* FIXME: carlton/2003-02-04: This is the main or only caller of
74 allocate_objfile with first argument NULL; as a result, this code
75 breaks every so often. Somebody should write a test case that
76 exercises GDB in various ways (e.g. something involving loading a
77 dynamic library) after this code has been called. */
79 static struct objfile
*
80 get_dynamics_objfile (void)
82 if (dynamics_objfile
== NULL
)
84 dynamics_objfile
= allocate_objfile (NULL
, 0);
86 return dynamics_objfile
;
90 /* symtab contains classes read from the inferior. */
92 static struct symtab
*class_symtab
= NULL
;
94 /* Maximum number of class in class_symtab before relocation is needed. */
96 static int class_symtab_space
;
98 static struct symtab
*
99 get_java_class_symtab (void)
101 if (class_symtab
== NULL
)
103 struct objfile
*objfile
= get_dynamics_objfile ();
104 struct blockvector
*bv
;
106 class_symtab
= allocate_symtab ("<java-classes>", objfile
);
107 class_symtab
->language
= language_java
;
108 bv
= (struct blockvector
*)
109 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct blockvector
));
110 BLOCKVECTOR_NBLOCKS (bv
) = 1;
111 BLOCKVECTOR (class_symtab
) = bv
;
113 /* Allocate dummy STATIC_BLOCK. */
114 bl
= (struct block
*)
115 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct block
));
116 BLOCK_NSYMS (bl
) = 0;
117 BLOCK_HASHTABLE (bl
) = 0;
118 BLOCK_START (bl
) = 0;
120 BLOCK_FUNCTION (bl
) = NULL
;
121 BLOCK_SUPERBLOCK (bl
) = NULL
;
122 BLOCK_NAMESPACE (bl
) = NULL
;
123 BLOCK_GCC_COMPILED (bl
) = 0;
124 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = bl
;
126 /* Allocate GLOBAL_BLOCK. This has to be relocatable. */
127 class_symtab_space
= 128;
128 bl
= xmmalloc (objfile
->md
,
129 sizeof (struct block
)
130 + ((class_symtab_space
- 1) * sizeof (struct symbol
*)));
131 *bl
= *BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
132 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
133 class_symtab
->free_ptr
= (char *) bl
;
139 add_class_symtab_symbol (struct symbol
*sym
)
141 struct symtab
*symtab
= get_java_class_symtab ();
142 struct blockvector
*bv
= BLOCKVECTOR (symtab
);
143 struct block
*bl
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
144 if (BLOCK_NSYMS (bl
) >= class_symtab_space
)
146 /* Need to re-allocate. */
147 class_symtab_space
*= 2;
148 bl
= xmrealloc (symtab
->objfile
->md
, bl
,
149 sizeof (struct block
)
150 + ((class_symtab_space
- 1) * sizeof (struct symbol
*)));
151 class_symtab
->free_ptr
= (char *) bl
;
152 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
155 BLOCK_SYM (bl
, BLOCK_NSYMS (bl
)) = sym
;
156 BLOCK_NSYMS (bl
) = BLOCK_NSYMS (bl
) + 1;
159 static struct symbol
*add_class_symbol (struct type
*type
, CORE_ADDR addr
);
161 static struct symbol
*
162 add_class_symbol (struct type
*type
, CORE_ADDR addr
)
165 sym
= (struct symbol
*)
166 obstack_alloc (&dynamics_objfile
->symbol_obstack
, sizeof (struct symbol
));
167 memset (sym
, 0, sizeof (struct symbol
));
168 SYMBOL_LANGUAGE (sym
) = language_java
;
169 DEPRECATED_SYMBOL_NAME (sym
) = TYPE_TAG_NAME (type
);
170 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
171 /* SYMBOL_VALUE (sym) = valu; */
172 SYMBOL_TYPE (sym
) = type
;
173 SYMBOL_DOMAIN (sym
) = STRUCT_DOMAIN
;
174 SYMBOL_VALUE_ADDRESS (sym
) = addr
;
180 java_lookup_class (char *name
)
183 sym
= lookup_symbol (name
, expression_context_block
, STRUCT_DOMAIN
,
184 (int *) 0, (struct symtab
**) NULL
);
186 return SYMBOL_TYPE (sym
);
189 if (called from parser
)
191 call
lookup_class (or similar
) in inferior
;
195 addr
= found in inferior
;
200 type
= alloc_type (objfile
);
201 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
202 INIT_CPLUS_SPECIFIC (type
);
203 TYPE_TAG_NAME (type
) = obsavestring (name
, strlen (name
), &objfile
->type_obstack
);
204 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
208 /* FIXME - should search inferior's symbol table. */
213 /* Return a nul-terminated string (allocated on OBSTACK) for
214 a name given by NAME (which has type Utf8Const*). */
217 get_java_utf8_name (struct obstack
*obstack
, struct value
*name
)
220 struct value
*temp
= name
;
223 temp
= value_struct_elt (&temp
, NULL
, "length", NULL
, "structure");
224 name_length
= (int) value_as_long (temp
);
225 data_addr
= VALUE_ADDRESS (temp
) + VALUE_OFFSET (temp
)
226 + TYPE_LENGTH (VALUE_TYPE (temp
));
227 chrs
= obstack_alloc (obstack
, name_length
+ 1);
228 chrs
[name_length
] = '\0';
229 read_memory (data_addr
, chrs
, name_length
);
234 java_class_from_object (struct value
*obj_val
)
236 /* This is all rather inefficient, since the offsets of vtable and
237 class are fixed. FIXME */
238 struct value
*vtable_val
;
240 if (TYPE_CODE (VALUE_TYPE (obj_val
)) == TYPE_CODE_PTR
241 && TYPE_LENGTH (TYPE_TARGET_TYPE (VALUE_TYPE (obj_val
))) == 0)
242 obj_val
= value_at (get_java_object_type (),
243 value_as_address (obj_val
), NULL
);
245 vtable_val
= value_struct_elt (&obj_val
, NULL
, "vtable", NULL
, "structure");
246 return value_struct_elt (&vtable_val
, NULL
, "class", NULL
, "structure");
249 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
251 java_class_is_primitive (struct value
*clas
)
253 struct value
*vtable
= value_struct_elt (&clas
, NULL
, "vtable", NULL
, "struct");
254 CORE_ADDR i
= value_as_address (vtable
);
255 return (int) (i
& 0x7fffffff) == (int) 0x7fffffff;
258 /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
261 type_from_class (struct value
*clas
)
266 struct objfile
*objfile
;
267 struct value
*utf8_name
;
274 type
= check_typedef (VALUE_TYPE (clas
));
275 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
277 if (value_logical_not (clas
))
279 clas
= value_ind (clas
);
281 addr
= VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
);
284 get_java_class_symtab ();
285 bl
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab
), GLOBAL_BLOCK
);
286 for (i
= BLOCK_NSYMS (bl
); --i
>= 0;)
288 struct symbol
*sym
= BLOCK_SYM (bl
, i
);
289 if (SYMBOL_VALUE_ADDRESS (sym
) == addr
)
290 return SYMBOL_TYPE (sym
);
294 objfile
= get_dynamics_objfile ();
295 if (java_class_is_primitive (clas
))
299 sig
= value_struct_elt (&temp
, NULL
, "method_count", NULL
, "structure");
300 return java_primitive_type (value_as_long (sig
));
303 /* Get Class name. */
304 /* if clasloader non-null, prepend loader address. FIXME */
306 utf8_name
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
307 name
= get_java_utf8_name (&objfile
->type_obstack
, utf8_name
);
308 for (nptr
= name
; *nptr
!= 0; nptr
++)
314 type
= java_lookup_class (name
);
318 type
= alloc_type (objfile
);
319 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
320 INIT_CPLUS_SPECIFIC (type
);
324 char *signature
= name
;
325 int namelen
= java_demangled_signature_length (signature
);
326 if (namelen
> strlen (name
))
327 name
= obstack_alloc (&objfile
->type_obstack
, namelen
+ 1);
328 java_demangled_signature_copy (name
, signature
);
329 name
[namelen
] = '\0';
332 /* Set array element type. */
333 temp
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
334 VALUE_TYPE (temp
) = lookup_pointer_type (VALUE_TYPE (clas
));
335 TYPE_TARGET_TYPE (type
) = type_from_class (temp
);
338 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
339 TYPE_TAG_NAME (type
) = name
;
341 add_class_symtab_symbol (add_class_symbol (type
, addr
));
342 return java_link_class_type (type
, clas
);
345 /* Fill in class TYPE with data from the CLAS value. */
348 java_link_class_type (struct type
*type
, struct value
*clas
)
351 char *unqualified_name
;
352 char *name
= TYPE_TAG_NAME (type
);
353 int ninterfaces
, nfields
, nmethods
;
354 int type_is_object
= 0;
355 struct fn_field
*fn_fields
;
356 struct fn_fieldlist
*fn_fieldlists
;
357 struct value
*fields
;
358 struct value
*methods
;
359 struct value
*method
= NULL
;
360 struct value
*field
= NULL
;
362 struct objfile
*objfile
= get_dynamics_objfile ();
365 unqualified_name
= strrchr (name
, '.');
366 if (unqualified_name
== NULL
)
367 unqualified_name
= name
;
370 temp
= value_struct_elt (&temp
, NULL
, "superclass", NULL
, "structure");
371 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
373 tsuper
= get_java_object_type ();
374 if (tsuper
&& TYPE_CODE (tsuper
) == TYPE_CODE_PTR
)
375 tsuper
= TYPE_TARGET_TYPE (tsuper
);
379 tsuper
= type_from_class (temp
);
385 ninterfaces
= value_as_long (value_struct_elt (&temp
, NULL
, "interface_len", NULL
, "structure"));
387 TYPE_N_BASECLASSES (type
) = (tsuper
== NULL
? 0 : 1) + ninterfaces
;
389 nfields
= value_as_long (value_struct_elt (&temp
, NULL
, "field_count", NULL
, "structure"));
390 nfields
+= TYPE_N_BASECLASSES (type
);
391 nfields
++; /* Add one for dummy "class" field. */
392 TYPE_NFIELDS (type
) = nfields
;
393 TYPE_FIELDS (type
) = (struct field
*)
394 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
396 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
398 TYPE_FIELD_PRIVATE_BITS (type
) =
399 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
400 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
402 TYPE_FIELD_PROTECTED_BITS (type
) =
403 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
404 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
406 TYPE_FIELD_IGNORE_BITS (type
) =
407 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
408 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
410 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
411 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
412 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
416 TYPE_BASECLASS (type
, 0) = tsuper
;
418 SET_TYPE_FIELD_PRIVATE (type
, 0);
422 if (i
> 2 && name
[i
- 1] == ']' && tsuper
!= NULL
)
425 TYPE_LENGTH (type
) = TYPE_LENGTH (tsuper
) + 4; /* size with "length" */
430 temp
= value_struct_elt (&temp
, NULL
, "size_in_bytes", NULL
, "structure");
431 TYPE_LENGTH (type
) = value_as_long (temp
);
435 nfields
--; /* First set up dummy "class" field. */
436 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, nfields
),
437 VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
));
438 TYPE_FIELD_NAME (type
, nfields
) = "class";
439 TYPE_FIELD_TYPE (type
, nfields
) = VALUE_TYPE (clas
);
440 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
442 for (i
= TYPE_N_BASECLASSES (type
); i
< nfields
; i
++)
449 fields
= value_struct_elt (&temp
, NULL
, "fields", NULL
, "structure");
450 field
= value_ind (fields
);
453 { /* Re-use field value for next field. */
454 VALUE_ADDRESS (field
) += TYPE_LENGTH (VALUE_TYPE (field
));
455 VALUE_LAZY (field
) = 1;
458 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
459 TYPE_FIELD_NAME (type
, i
) =
460 get_java_utf8_name (&objfile
->type_obstack
, temp
);
462 accflags
= value_as_long (value_struct_elt (&temp
, NULL
, "accflags",
465 temp
= value_struct_elt (&temp
, NULL
, "info", NULL
, "structure");
466 boffset
= value_as_long (value_struct_elt (&temp
, NULL
, "boffset",
468 if (accflags
& 0x0001) /* public access */
472 if (accflags
& 0x0002) /* private access */
474 SET_TYPE_FIELD_PRIVATE (type
, i
);
476 if (accflags
& 0x0004) /* protected access */
478 SET_TYPE_FIELD_PROTECTED (type
, i
);
480 if (accflags
& 0x0008) /* ACC_STATIC */
481 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, i
), boffset
);
483 TYPE_FIELD_BITPOS (type
, i
) = 8 * boffset
;
484 if (accflags
& 0x8000) /* FIELD_UNRESOLVED_FLAG */
486 TYPE_FIELD_TYPE (type
, i
) = get_java_object_type (); /* FIXME */
492 temp
= value_struct_elt (&temp
, NULL
, "type", NULL
, "structure");
493 ftype
= type_from_class (temp
);
494 if (TYPE_CODE (ftype
) == TYPE_CODE_STRUCT
)
495 ftype
= lookup_pointer_type (ftype
);
496 TYPE_FIELD_TYPE (type
, i
) = ftype
;
501 nmethods
= value_as_long (value_struct_elt (&temp
, NULL
, "method_count",
503 TYPE_NFN_FIELDS_TOTAL (type
) = nmethods
;
504 j
= nmethods
* sizeof (struct fn_field
);
505 fn_fields
= (struct fn_field
*)
506 obstack_alloc (&dynamics_objfile
->symbol_obstack
, j
);
507 memset (fn_fields
, 0, j
);
508 fn_fieldlists
= (struct fn_fieldlist
*)
509 alloca (nmethods
* sizeof (struct fn_fieldlist
));
512 for (i
= 0; i
< nmethods
; i
++)
519 methods
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
520 method
= value_ind (methods
);
523 { /* Re-use method value for next method. */
524 VALUE_ADDRESS (method
) += TYPE_LENGTH (VALUE_TYPE (method
));
525 VALUE_LAZY (method
) = 1;
528 /* Get method name. */
530 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
531 mname
= get_java_utf8_name (&objfile
->type_obstack
, temp
);
532 if (strcmp (mname
, "<init>") == 0)
533 mname
= unqualified_name
;
535 /* Check for an existing method with the same name.
536 * This makes building the fn_fieldslists an O(nmethods**2)
537 * operation. That could be using hashing, but I doubt it
538 * is worth it. Note that we do maintain the order of methods
539 * in the inferior's Method table (as long as that is grouped
540 * by method name), which I think is desirable. --PB */
541 for (k
= 0, j
= TYPE_NFN_FIELDS (type
);;)
544 { /* No match - new method name. */
545 j
= TYPE_NFN_FIELDS (type
)++;
546 fn_fieldlists
[j
].name
= mname
;
547 fn_fieldlists
[j
].length
= 1;
548 fn_fieldlists
[j
].fn_fields
= &fn_fields
[i
];
552 if (strcmp (mname
, fn_fieldlists
[j
].name
) == 0)
553 { /* Found an existing method with the same name. */
555 if (mname
!= unqualified_name
)
556 obstack_free (&objfile
->type_obstack
, mname
);
557 mname
= fn_fieldlists
[j
].name
;
558 fn_fieldlists
[j
].length
++;
559 k
= i
- k
; /* Index of new slot. */
560 /* Shift intervening fn_fields (between k and i) down. */
561 for (l
= i
; l
> k
; l
--)
562 fn_fields
[l
] = fn_fields
[l
- 1];
563 for (l
= TYPE_NFN_FIELDS (type
); --l
> j
;)
564 fn_fieldlists
[l
].fn_fields
++;
567 k
+= fn_fieldlists
[j
].length
;
569 fn_fields
[k
].physname
= "";
570 fn_fields
[k
].is_stub
= 1;
571 fn_fields
[k
].type
= make_function_type (java_void_type
, NULL
); /* FIXME */
572 TYPE_CODE (fn_fields
[k
].type
) = TYPE_CODE_METHOD
;
575 j
= TYPE_NFN_FIELDS (type
) * sizeof (struct fn_fieldlist
);
576 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
577 obstack_alloc (&dynamics_objfile
->symbol_obstack
, j
);
578 memcpy (TYPE_FN_FIELDLISTS (type
), fn_fieldlists
, j
);
583 static struct type
*java_object_type
;
586 get_java_object_type (void)
588 if (java_object_type
== NULL
)
591 sym
= lookup_symbol ("java.lang.Object", NULL
, STRUCT_DOMAIN
,
592 (int *) 0, (struct symtab
**) NULL
);
594 error ("cannot find java.lang.Object");
595 java_object_type
= SYMBOL_TYPE (sym
);
597 return java_object_type
;
601 get_java_object_header_size (void)
603 struct type
*objtype
= get_java_object_type ();
605 return (2 * TARGET_PTR_BIT
/ TARGET_CHAR_BIT
);
607 return TYPE_LENGTH (objtype
);
611 is_object_type (struct type
*type
)
613 CHECK_TYPEDEF (type
);
614 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
616 struct type
*ttype
= check_typedef (TYPE_TARGET_TYPE (type
));
618 if (TYPE_CODE (ttype
) != TYPE_CODE_STRUCT
)
620 while (TYPE_N_BASECLASSES (ttype
) > 0)
621 ttype
= TYPE_BASECLASS (ttype
, 0);
622 name
= TYPE_TAG_NAME (ttype
);
623 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
625 name
= TYPE_NFIELDS (ttype
) > 0 ? TYPE_FIELD_NAME (ttype
, 0) : (char *) 0;
626 if (name
!= NULL
&& strcmp (name
, "vtable") == 0)
628 if (java_object_type
== NULL
)
629 java_object_type
= type
;
637 java_primitive_type (int signature
)
642 return java_byte_type
;
644 return java_short_type
;
646 return java_int_type
;
648 return java_long_type
;
650 return java_boolean_type
;
652 return java_char_type
;
654 return java_float_type
;
656 return java_double_type
;
658 return java_void_type
;
660 error ("unknown signature '%c' for primitive type", (char) signature
);
663 /* If name[0 .. namelen-1] is the name of a primitive Java type,
664 return that type. Otherwise, return NULL. */
667 java_primitive_type_from_name (char *name
, int namelen
)
672 if (namelen
== 4 && memcmp (name
, "byte", 4) == 0)
673 return java_byte_type
;
674 if (namelen
== 7 && memcmp (name
, "boolean", 7) == 0)
675 return java_boolean_type
;
678 if (namelen
== 4 && memcmp (name
, "char", 4) == 0)
679 return java_char_type
;
681 if (namelen
== 6 && memcmp (name
, "double", 6) == 0)
682 return java_double_type
;
685 if (namelen
== 5 && memcmp (name
, "float", 5) == 0)
686 return java_float_type
;
689 if (namelen
== 3 && memcmp (name
, "int", 3) == 0)
690 return java_int_type
;
693 if (namelen
== 4 && memcmp (name
, "long", 4) == 0)
694 return java_long_type
;
697 if (namelen
== 5 && memcmp (name
, "short", 5) == 0)
698 return java_short_type
;
701 if (namelen
== 4 && memcmp (name
, "void", 4) == 0)
702 return java_void_type
;
708 /* Return the length (in bytes) of demangled name of the Java type
709 signature string SIGNATURE. */
712 java_demangled_signature_length (char *signature
)
715 for (; *signature
== '['; signature
++)
716 array
+= 2; /* Two chars for "[]". */
717 switch (signature
[0])
720 /* Subtract 2 for 'L' and ';'. */
721 return strlen (signature
) - 2 + array
;
723 return strlen (TYPE_NAME (java_primitive_type (signature
[0]))) + array
;
727 /* Demangle the Java type signature SIGNATURE, leaving the result in RESULT. */
730 java_demangled_signature_copy (char *result
, char *signature
)
735 while (*signature
== '[')
740 switch (signature
[0])
743 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
746 for (; *signature
!= ';' && *signature
!= '\0'; signature
++)
748 if (*signature
== '/')
755 ptr
= TYPE_NAME (java_primitive_type (signature
[0]));
757 strcpy (result
, ptr
);
768 /* Return the demangled name of the Java type signature string SIGNATURE,
769 as a freshly allocated copy. */
772 java_demangle_type_signature (char *signature
)
774 int length
= java_demangled_signature_length (signature
);
775 char *result
= xmalloc (length
+ 1);
776 java_demangled_signature_copy (result
, signature
);
777 result
[length
] = '\0';
782 java_lookup_type (char *signature
)
784 switch (signature
[0])
788 error ("java_lookup_type not fully implemented");
790 return java_primitive_type (signature
[0]);
794 /* Return the type of TYPE followed by DIMS pairs of [ ].
795 If DIMS == 0, TYPE is returned. */
798 java_array_type (struct type
*type
, int dims
)
800 struct type
*range_type
;
804 range_type
= create_range_type (NULL
, builtin_type_int
, 0, 0);
805 /* FIXME This is bogus! Java arrays are not gdb arrays! */
806 type
= create_array_type (NULL
, type
, range_type
);
812 /* Create a Java string in the inferior from a (Utf8) literal. */
814 static struct value
*
815 java_value_string (char *ptr
, int len
)
817 error ("not implemented - java_value_string"); /* FIXME */
820 /* Print the character C on STREAM as part of the contents of a literal
821 string whose delimiter is QUOTER. Note that that format for printing
822 characters and strings is language specific. */
825 java_emit_char (int c
, struct ui_file
*stream
, int quoter
)
831 fprintf_filtered (stream
, "\\%c", c
);
834 fputs_filtered ("\\b", stream
);
837 fputs_filtered ("\\t", stream
);
840 fputs_filtered ("\\n", stream
);
843 fputs_filtered ("\\f", stream
);
846 fputs_filtered ("\\r", stream
);
850 fputc_filtered (c
, stream
);
852 fprintf_filtered (stream
, "\\u%.4x", (unsigned int) c
);
857 static struct value
*
858 evaluate_subexp_java (struct type
*expect_type
, register struct expression
*exp
,
859 register int *pos
, enum noside noside
)
864 enum exp_opcode op
= exp
->elts
[*pos
].opcode
;
871 if (noside
== EVAL_SKIP
)
874 arg1
= evaluate_subexp_java (NULL_TYPE
, exp
, pos
, EVAL_NORMAL
);
875 if (is_object_type (VALUE_TYPE (arg1
)))
879 type
= type_from_class (java_class_from_object (arg1
));
880 arg1
= value_cast (lookup_pointer_type (type
), arg1
);
882 if (noside
== EVAL_SKIP
)
884 return value_ind (arg1
);
886 case BINOP_SUBSCRIPT
:
888 arg1
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
889 arg2
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
890 if (noside
== EVAL_SKIP
)
892 /* If the user attempts to subscript something that is not an
893 array or pointer type (like a plain int variable for example),
894 then report this as an error. */
897 type
= check_typedef (VALUE_TYPE (arg1
));
898 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
899 type
= check_typedef (TYPE_TARGET_TYPE (type
));
900 name
= TYPE_NAME (type
);
902 name
= TYPE_TAG_NAME (type
);
903 i
= name
== NULL
? 0 : strlen (name
);
904 if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
905 && i
> 2 && name
[i
- 1] == ']')
909 struct type
*el_type
;
912 struct value
*clas
= java_class_from_object (arg1
);
913 struct value
*temp
= clas
;
914 /* Get CLASS_ELEMENT_TYPE of the array type. */
915 temp
= value_struct_elt (&temp
, NULL
, "methods",
917 VALUE_TYPE (temp
) = VALUE_TYPE (clas
);
918 el_type
= type_from_class (temp
);
919 if (TYPE_CODE (el_type
) == TYPE_CODE_STRUCT
)
920 el_type
= lookup_pointer_type (el_type
);
922 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
923 return value_zero (el_type
, VALUE_LVAL (arg1
));
924 address
= value_as_address (arg1
);
925 address
+= JAVA_OBJECT_SIZE
;
926 read_memory (address
, buf4
, 4);
927 length
= (long) extract_signed_integer (buf4
, 4);
928 index
= (long) value_as_long (arg2
);
929 if (index
>= length
|| index
< 0)
930 error ("array index (%ld) out of bounds (length: %ld)",
932 address
= (address
+ 4) + index
* TYPE_LENGTH (el_type
);
933 return value_at (el_type
, address
, NULL
);
935 else if (TYPE_CODE (type
) == TYPE_CODE_ARRAY
)
937 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
938 return value_zero (TYPE_TARGET_TYPE (type
), VALUE_LVAL (arg1
));
940 return value_subscript (arg1
, arg2
);
943 error ("cannot subscript something of type `%s'", name
);
945 error ("cannot subscript requested type");
949 i
= longest_to_int (exp
->elts
[pc
+ 1].longconst
);
950 (*pos
) += 3 + BYTES_TO_EXP_ELEM (i
+ 1);
951 if (noside
== EVAL_SKIP
)
953 return java_value_string (&exp
->elts
[pc
+ 2].string
, i
);
955 case STRUCTOP_STRUCT
:
956 arg1
= evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
957 /* Convert object field (such as TYPE.class) to reference. */
958 if (TYPE_CODE (VALUE_TYPE (arg1
)) == TYPE_CODE_STRUCT
)
959 arg1
= value_addr (arg1
);
965 return evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
967 return value_from_longest (builtin_type_long
, (LONGEST
) 1);
971 java_create_fundamental_type (struct objfile
*objfile
, int typeid)
976 return java_void_type
;
978 return java_boolean_type
;
980 return java_char_type
;
982 return java_float_type
;
983 case FT_DBL_PREC_FLOAT
:
984 return java_double_type
;
987 return java_byte_type
;
989 case FT_SIGNED_SHORT
:
990 return java_short_type
;
992 case FT_SIGNED_INTEGER
:
993 return java_int_type
;
996 return java_long_type
;
998 return c_create_fundamental_type (objfile
, typeid);
1001 static char *java_demangle (const char *mangled
, int options
)
1003 return cplus_demangle (mangled
, options
| DMGL_JAVA
);
1007 /* Table mapping opcodes into strings for printing operators
1008 and precedences of the operators. */
1010 const struct op_print java_op_print_tab
[] =
1012 {",", BINOP_COMMA
, PREC_COMMA
, 0},
1013 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
1014 {"||", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
1015 {"&&", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
1016 {"|", BINOP_BITWISE_IOR
, PREC_BITWISE_IOR
, 0},
1017 {"^", BINOP_BITWISE_XOR
, PREC_BITWISE_XOR
, 0},
1018 {"&", BINOP_BITWISE_AND
, PREC_BITWISE_AND
, 0},
1019 {"==", BINOP_EQUAL
, PREC_EQUAL
, 0},
1020 {"!=", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
1021 {"<=", BINOP_LEQ
, PREC_ORDER
, 0},
1022 {">=", BINOP_GEQ
, PREC_ORDER
, 0},
1023 {">", BINOP_GTR
, PREC_ORDER
, 0},
1024 {"<", BINOP_LESS
, PREC_ORDER
, 0},
1025 {">>", BINOP_RSH
, PREC_SHIFT
, 0},
1026 {"<<", BINOP_LSH
, PREC_SHIFT
, 0},
1028 {">>>", BINOP_
? ? ?, PREC_SHIFT
, 0},
1030 {"+", BINOP_ADD
, PREC_ADD
, 0},
1031 {"-", BINOP_SUB
, PREC_ADD
, 0},
1032 {"*", BINOP_MUL
, PREC_MUL
, 0},
1033 {"/", BINOP_DIV
, PREC_MUL
, 0},
1034 {"%", BINOP_REM
, PREC_MUL
, 0},
1035 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
1036 {"!", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
1037 {"~", UNOP_COMPLEMENT
, PREC_PREFIX
, 0},
1038 {"*", UNOP_IND
, PREC_PREFIX
, 0},
1040 {"instanceof", ? ? ?, ? ? ?, 0},
1042 {"++", UNOP_PREINCREMENT
, PREC_PREFIX
, 0},
1043 {"--", UNOP_PREDECREMENT
, PREC_PREFIX
, 0},
1047 const struct language_defn java_language_defn
=
1049 "java", /* Language name */
1057 evaluate_subexp_java
,
1058 c_printchar
, /* Print a character constant */
1059 c_printstr
, /* Function to print string constant */
1060 java_emit_char
, /* Function to print a single character */
1061 java_create_fundamental_type
, /* Create fundamental type in this language */
1062 java_print_type
, /* Print a type using appropriate syntax */
1063 java_val_print
, /* Print a value using appropriate syntax */
1064 java_value_print
, /* Print a top-level value */
1065 NULL
, /* Language specific skip_trampoline */
1066 value_of_this
, /* value_of_this */
1067 basic_lookup_symbol_nonlocal
, /* lookup_symbol_nonlocal */
1068 java_demangle
, /* Language specific symbol demangler */
1069 {"", "", "", ""}, /* Binary format info */
1070 {"0%lo", "0", "o", ""}, /* Octal format info */
1071 {"%ld", "", "d", ""}, /* Decimal format info */
1072 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1073 java_op_print_tab
, /* expression operators for printing */
1074 0, /* not c-style arrays */
1075 0, /* String lower bound */
1076 &builtin_type_char
, /* Type of string elements */
1081 _initialize_java_language (void)
1084 java_int_type
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1085 java_short_type
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1086 java_long_type
= init_type (TYPE_CODE_INT
, 8, 0, "long", NULL
);
1087 java_byte_type
= init_type (TYPE_CODE_INT
, 1, 0, "byte", NULL
);
1088 java_boolean_type
= init_type (TYPE_CODE_BOOL
, 1, 0, "boolean", NULL
);
1089 java_char_type
= init_type (TYPE_CODE_CHAR
, 2, TYPE_FLAG_UNSIGNED
, "char", NULL
);
1090 java_float_type
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1091 java_double_type
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1092 java_void_type
= init_type (TYPE_CODE_VOID
, 1, 0, "void", NULL
);
1094 add_language (&java_language_defn
);
1097 /* Cleanup code that should be run on every "run".
1098 We should use make_run_cleanup to have this be called.
1099 But will that mess up values in value histry? FIXME */
1101 extern void java_rerun_cleanup (void);
1103 java_rerun_cleanup (void)
1105 if (class_symtab
!= NULL
)
1107 free_symtab (class_symtab
); /* ??? */
1108 class_symtab
= NULL
;
1110 if (dynamics_objfile
!= NULL
)
1112 free_objfile (dynamics_objfile
);
1113 dynamics_objfile
= NULL
;
1116 java_object_type
= NULL
;