1 /* Java language support routines for GDB, the GNU debugger.
2 Copyright 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
24 #include "expression.h"
25 #include "parser-defs.h"
31 #include "gdb_string.h"
38 struct type
*java_int_type
;
39 struct type
*java_byte_type
;
40 struct type
*java_short_type
;
41 struct type
*java_long_type
;
42 struct type
*java_boolean_type
;
43 struct type
*java_char_type
;
44 struct type
*java_float_type
;
45 struct type
*java_double_type
;
46 struct type
*java_void_type
;
50 extern void _initialize_java_language (void);
52 static int java_demangled_signature_length (char *);
53 static void java_demangled_signature_copy (char *, char *);
55 static struct symtab
*get_java_class_symtab (void);
56 static char *get_java_utf8_name (struct obstack
*obstack
, struct value
*name
);
57 static int java_class_is_primitive (struct value
*clas
);
58 static struct type
*java_lookup_type (char *signature
);
59 static struct value
*java_value_string (char *ptr
, int len
);
61 static void java_emit_char (int c
, struct ui_file
* stream
, int quoter
);
63 /* This objfile contains symtabs that have been dynamically created
64 to record dynamically loaded Java classes and dynamically
65 compiled java methods. */
67 static struct objfile
*dynamics_objfile
= NULL
;
69 static struct type
*java_link_class_type (struct type
*, struct value
*);
71 /* FIXME: carlton/2003-02-04: This is the main or only caller of
72 allocate_objfile with first argument NULL; as a result, this code
73 breaks every so often. Somebody should write a test case that
74 exercises GDB in various ways (e.g. something involving loading a
75 dynamic library) after this code has been called. */
77 static struct objfile
*
78 get_dynamics_objfile (void)
80 if (dynamics_objfile
== NULL
)
82 dynamics_objfile
= allocate_objfile (NULL
, 0);
84 return dynamics_objfile
;
88 /* symtab contains classes read from the inferior. */
90 static struct symtab
*class_symtab
= NULL
;
92 /* Maximum number of class in class_symtab before relocation is needed. */
94 static int class_symtab_space
;
96 static struct symtab
*
97 get_java_class_symtab (void)
99 if (class_symtab
== NULL
)
101 struct objfile
*objfile
= get_dynamics_objfile ();
102 struct blockvector
*bv
;
104 class_symtab
= allocate_symtab ("<java-classes>", objfile
);
105 class_symtab
->language
= language_java
;
106 bv
= (struct blockvector
*)
107 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct blockvector
));
108 BLOCKVECTOR_NBLOCKS (bv
) = 1;
109 BLOCKVECTOR (class_symtab
) = bv
;
111 /* Allocate dummy STATIC_BLOCK. */
112 bl
= (struct block
*)
113 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct block
));
114 BLOCK_NSYMS (bl
) = 0;
115 BLOCK_HASHTABLE (bl
) = 0;
116 BLOCK_START (bl
) = 0;
118 BLOCK_FUNCTION (bl
) = NULL
;
119 BLOCK_SUPERBLOCK (bl
) = NULL
;
120 BLOCK_GCC_COMPILED (bl
) = 0;
121 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = bl
;
123 /* Allocate GLOBAL_BLOCK. This has to be relocatable. */
124 class_symtab_space
= 128;
125 bl
= xmmalloc (objfile
->md
,
126 sizeof (struct block
)
127 + ((class_symtab_space
- 1) * sizeof (struct symbol
*)));
128 *bl
= *BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
129 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
130 class_symtab
->free_ptr
= (char *) bl
;
136 add_class_symtab_symbol (struct symbol
*sym
)
138 struct symtab
*symtab
= get_java_class_symtab ();
139 struct blockvector
*bv
= BLOCKVECTOR (symtab
);
140 struct block
*bl
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
141 if (BLOCK_NSYMS (bl
) >= class_symtab_space
)
143 /* Need to re-allocate. */
144 class_symtab_space
*= 2;
145 bl
= xmrealloc (symtab
->objfile
->md
, bl
,
146 sizeof (struct block
)
147 + ((class_symtab_space
- 1) * sizeof (struct symbol
*)));
148 class_symtab
->free_ptr
= (char *) bl
;
149 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
152 BLOCK_SYM (bl
, BLOCK_NSYMS (bl
)) = sym
;
153 BLOCK_NSYMS (bl
) = BLOCK_NSYMS (bl
) + 1;
156 static struct symbol
*add_class_symbol (struct type
*type
, CORE_ADDR addr
);
158 static struct symbol
*
159 add_class_symbol (struct type
*type
, CORE_ADDR addr
)
162 sym
= (struct symbol
*)
163 obstack_alloc (&dynamics_objfile
->symbol_obstack
, sizeof (struct symbol
));
164 memset (sym
, 0, sizeof (struct symbol
));
165 SYMBOL_LANGUAGE (sym
) = language_java
;
166 SYMBOL_NAME (sym
) = TYPE_TAG_NAME (type
);
167 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
168 /* SYMBOL_VALUE (sym) = valu; */
169 SYMBOL_TYPE (sym
) = type
;
170 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
171 SYMBOL_VALUE_ADDRESS (sym
) = addr
;
177 java_lookup_class (char *name
)
180 sym
= lookup_symbol (name
, expression_context_block
, STRUCT_NAMESPACE
,
181 (int *) 0, (struct symtab
**) NULL
);
183 return SYMBOL_TYPE (sym
);
186 if (called from parser
)
188 call
lookup_class (or similar
) in inferior
;
192 addr
= found in inferior
;
197 type
= alloc_type (objfile
);
198 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
199 INIT_CPLUS_SPECIFIC (type
);
200 TYPE_TAG_NAME (type
) = obsavestring (name
, strlen (name
), &objfile
->type_obstack
);
201 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
205 /* FIXME - should search inferior's symbol table. */
210 /* Return a nul-terminated string (allocated on OBSTACK) for
211 a name given by NAME (which has type Utf8Const*). */
214 get_java_utf8_name (struct obstack
*obstack
, struct value
*name
)
217 struct value
*temp
= name
;
220 temp
= value_struct_elt (&temp
, NULL
, "length", NULL
, "structure");
221 name_length
= (int) value_as_long (temp
);
222 data_addr
= VALUE_ADDRESS (temp
) + VALUE_OFFSET (temp
)
223 + TYPE_LENGTH (VALUE_TYPE (temp
));
224 chrs
= obstack_alloc (obstack
, name_length
+ 1);
225 chrs
[name_length
] = '\0';
226 read_memory (data_addr
, chrs
, name_length
);
231 java_class_from_object (struct value
*obj_val
)
233 /* This is all rather inefficient, since the offsets of vtable and
234 class are fixed. FIXME */
235 struct value
*vtable_val
;
237 if (TYPE_CODE (VALUE_TYPE (obj_val
)) == TYPE_CODE_PTR
238 && TYPE_LENGTH (TYPE_TARGET_TYPE (VALUE_TYPE (obj_val
))) == 0)
239 obj_val
= value_at (get_java_object_type (),
240 value_as_address (obj_val
), NULL
);
242 vtable_val
= value_struct_elt (&obj_val
, NULL
, "vtable", NULL
, "structure");
243 return value_struct_elt (&vtable_val
, NULL
, "class", NULL
, "structure");
246 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
248 java_class_is_primitive (struct value
*clas
)
250 struct value
*vtable
= value_struct_elt (&clas
, NULL
, "vtable", NULL
, "struct");
251 CORE_ADDR i
= value_as_address (vtable
);
252 return (int) (i
& 0x7fffffff) == (int) 0x7fffffff;
255 /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
258 type_from_class (struct value
*clas
)
263 struct objfile
*objfile
;
264 struct value
*utf8_name
;
271 type
= check_typedef (VALUE_TYPE (clas
));
272 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
274 if (value_logical_not (clas
))
276 clas
= value_ind (clas
);
278 addr
= VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
);
281 get_java_class_symtab ();
282 bl
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab
), GLOBAL_BLOCK
);
283 for (i
= BLOCK_NSYMS (bl
); --i
>= 0;)
285 struct symbol
*sym
= BLOCK_SYM (bl
, i
);
286 if (SYMBOL_VALUE_ADDRESS (sym
) == addr
)
287 return SYMBOL_TYPE (sym
);
291 objfile
= get_dynamics_objfile ();
292 if (java_class_is_primitive (clas
))
296 sig
= value_struct_elt (&temp
, NULL
, "method_count", NULL
, "structure");
297 return java_primitive_type (value_as_long (sig
));
300 /* Get Class name. */
301 /* if clasloader non-null, prepend loader address. FIXME */
303 utf8_name
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
304 name
= get_java_utf8_name (&objfile
->type_obstack
, utf8_name
);
305 for (nptr
= name
; *nptr
!= 0; nptr
++)
311 type
= java_lookup_class (name
);
315 type
= alloc_type (objfile
);
316 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
317 INIT_CPLUS_SPECIFIC (type
);
321 char *signature
= name
;
322 int namelen
= java_demangled_signature_length (signature
);
323 if (namelen
> strlen (name
))
324 name
= obstack_alloc (&objfile
->type_obstack
, namelen
+ 1);
325 java_demangled_signature_copy (name
, signature
);
326 name
[namelen
] = '\0';
329 /* Set array element type. */
330 temp
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
331 VALUE_TYPE (temp
) = lookup_pointer_type (VALUE_TYPE (clas
));
332 TYPE_TARGET_TYPE (type
) = type_from_class (temp
);
335 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
336 TYPE_TAG_NAME (type
) = name
;
338 add_class_symtab_symbol (add_class_symbol (type
, addr
));
339 return java_link_class_type (type
, clas
);
342 /* Fill in class TYPE with data from the CLAS value. */
345 java_link_class_type (struct type
*type
, struct value
*clas
)
348 char *unqualified_name
;
349 char *name
= TYPE_TAG_NAME (type
);
350 int ninterfaces
, nfields
, nmethods
;
351 int type_is_object
= 0;
352 struct fn_field
*fn_fields
;
353 struct fn_fieldlist
*fn_fieldlists
;
354 struct value
*fields
;
355 struct value
*methods
;
356 struct value
*method
= NULL
;
357 struct value
*field
= NULL
;
359 struct objfile
*objfile
= get_dynamics_objfile ();
362 unqualified_name
= strrchr (name
, '.');
363 if (unqualified_name
== NULL
)
364 unqualified_name
= name
;
367 temp
= value_struct_elt (&temp
, NULL
, "superclass", NULL
, "structure");
368 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
370 tsuper
= get_java_object_type ();
371 if (tsuper
&& TYPE_CODE (tsuper
) == TYPE_CODE_PTR
)
372 tsuper
= TYPE_TARGET_TYPE (tsuper
);
376 tsuper
= type_from_class (temp
);
382 ninterfaces
= value_as_long (value_struct_elt (&temp
, NULL
, "interface_len", NULL
, "structure"));
384 TYPE_N_BASECLASSES (type
) = (tsuper
== NULL
? 0 : 1) + ninterfaces
;
386 nfields
= value_as_long (value_struct_elt (&temp
, NULL
, "field_count", NULL
, "structure"));
387 nfields
+= TYPE_N_BASECLASSES (type
);
388 nfields
++; /* Add one for dummy "class" field. */
389 TYPE_NFIELDS (type
) = nfields
;
390 TYPE_FIELDS (type
) = (struct field
*)
391 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
393 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
395 TYPE_FIELD_PRIVATE_BITS (type
) =
396 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
397 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
399 TYPE_FIELD_PROTECTED_BITS (type
) =
400 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
401 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
403 TYPE_FIELD_IGNORE_BITS (type
) =
404 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
405 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
407 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
408 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
409 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
413 TYPE_BASECLASS (type
, 0) = tsuper
;
415 SET_TYPE_FIELD_PRIVATE (type
, 0);
419 if (i
> 2 && name
[i
- 1] == ']' && tsuper
!= NULL
)
422 TYPE_LENGTH (type
) = TYPE_LENGTH (tsuper
) + 4; /* size with "length" */
427 temp
= value_struct_elt (&temp
, NULL
, "size_in_bytes", NULL
, "structure");
428 TYPE_LENGTH (type
) = value_as_long (temp
);
432 nfields
--; /* First set up dummy "class" field. */
433 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, nfields
),
434 VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
));
435 TYPE_FIELD_NAME (type
, nfields
) = "class";
436 TYPE_FIELD_TYPE (type
, nfields
) = VALUE_TYPE (clas
);
437 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
439 for (i
= TYPE_N_BASECLASSES (type
); i
< nfields
; i
++)
446 fields
= value_struct_elt (&temp
, NULL
, "fields", NULL
, "structure");
447 field
= value_ind (fields
);
450 { /* Re-use field value for next field. */
451 VALUE_ADDRESS (field
) += TYPE_LENGTH (VALUE_TYPE (field
));
452 VALUE_LAZY (field
) = 1;
455 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
456 TYPE_FIELD_NAME (type
, i
) =
457 get_java_utf8_name (&objfile
->type_obstack
, temp
);
459 accflags
= value_as_long (value_struct_elt (&temp
, NULL
, "accflags",
462 temp
= value_struct_elt (&temp
, NULL
, "info", NULL
, "structure");
463 boffset
= value_as_long (value_struct_elt (&temp
, NULL
, "boffset",
465 if (accflags
& 0x0001) /* public access */
469 if (accflags
& 0x0002) /* private access */
471 SET_TYPE_FIELD_PRIVATE (type
, i
);
473 if (accflags
& 0x0004) /* protected access */
475 SET_TYPE_FIELD_PROTECTED (type
, i
);
477 if (accflags
& 0x0008) /* ACC_STATIC */
478 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, i
), boffset
);
480 TYPE_FIELD_BITPOS (type
, i
) = 8 * boffset
;
481 if (accflags
& 0x8000) /* FIELD_UNRESOLVED_FLAG */
483 TYPE_FIELD_TYPE (type
, i
) = get_java_object_type (); /* FIXME */
489 temp
= value_struct_elt (&temp
, NULL
, "type", NULL
, "structure");
490 ftype
= type_from_class (temp
);
491 if (TYPE_CODE (ftype
) == TYPE_CODE_STRUCT
)
492 ftype
= lookup_pointer_type (ftype
);
493 TYPE_FIELD_TYPE (type
, i
) = ftype
;
498 nmethods
= value_as_long (value_struct_elt (&temp
, NULL
, "method_count",
500 TYPE_NFN_FIELDS_TOTAL (type
) = nmethods
;
501 j
= nmethods
* sizeof (struct fn_field
);
502 fn_fields
= (struct fn_field
*)
503 obstack_alloc (&dynamics_objfile
->symbol_obstack
, j
);
504 memset (fn_fields
, 0, j
);
505 fn_fieldlists
= (struct fn_fieldlist
*)
506 alloca (nmethods
* sizeof (struct fn_fieldlist
));
509 for (i
= 0; i
< nmethods
; i
++)
516 methods
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
517 method
= value_ind (methods
);
520 { /* Re-use method value for next method. */
521 VALUE_ADDRESS (method
) += TYPE_LENGTH (VALUE_TYPE (method
));
522 VALUE_LAZY (method
) = 1;
525 /* Get method name. */
527 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
528 mname
= get_java_utf8_name (&objfile
->type_obstack
, temp
);
529 if (strcmp (mname
, "<init>") == 0)
530 mname
= unqualified_name
;
532 /* Check for an existing method with the same name.
533 * This makes building the fn_fieldslists an O(nmethods**2)
534 * operation. That could be using hashing, but I doubt it
535 * is worth it. Note that we do maintain the order of methods
536 * in the inferior's Method table (as long as that is grouped
537 * by method name), which I think is desirable. --PB */
538 for (k
= 0, j
= TYPE_NFN_FIELDS (type
);;)
541 { /* No match - new method name. */
542 j
= TYPE_NFN_FIELDS (type
)++;
543 fn_fieldlists
[j
].name
= mname
;
544 fn_fieldlists
[j
].length
= 1;
545 fn_fieldlists
[j
].fn_fields
= &fn_fields
[i
];
549 if (strcmp (mname
, fn_fieldlists
[j
].name
) == 0)
550 { /* Found an existing method with the same name. */
552 if (mname
!= unqualified_name
)
553 obstack_free (&objfile
->type_obstack
, mname
);
554 mname
= fn_fieldlists
[j
].name
;
555 fn_fieldlists
[j
].length
++;
556 k
= i
- k
; /* Index of new slot. */
557 /* Shift intervening fn_fields (between k and i) down. */
558 for (l
= i
; l
> k
; l
--)
559 fn_fields
[l
] = fn_fields
[l
- 1];
560 for (l
= TYPE_NFN_FIELDS (type
); --l
> j
;)
561 fn_fieldlists
[l
].fn_fields
++;
564 k
+= fn_fieldlists
[j
].length
;
566 fn_fields
[k
].physname
= "";
567 fn_fields
[k
].is_stub
= 1;
568 fn_fields
[k
].type
= make_function_type (java_void_type
, NULL
); /* FIXME */
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
->symbol_obstack
, j
);
575 memcpy (TYPE_FN_FIELDLISTS (type
), fn_fieldlists
, j
);
580 static struct type
*java_object_type
;
583 get_java_object_type (void)
585 if (java_object_type
== NULL
)
588 sym
= lookup_symbol ("java.lang.Object", NULL
, STRUCT_NAMESPACE
,
589 (int *) 0, (struct symtab
**) NULL
);
591 error ("cannot find java.lang.Object");
592 java_object_type
= SYMBOL_TYPE (sym
);
594 return java_object_type
;
598 get_java_object_header_size (void)
600 struct type
*objtype
= get_java_object_type ();
602 return (2 * TARGET_PTR_BIT
/ TARGET_CHAR_BIT
);
604 return TYPE_LENGTH (objtype
);
608 is_object_type (struct type
*type
)
610 CHECK_TYPEDEF (type
);
611 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
613 struct type
*ttype
= check_typedef (TYPE_TARGET_TYPE (type
));
615 if (TYPE_CODE (ttype
) != TYPE_CODE_STRUCT
)
617 while (TYPE_N_BASECLASSES (ttype
) > 0)
618 ttype
= TYPE_BASECLASS (ttype
, 0);
619 name
= TYPE_TAG_NAME (ttype
);
620 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
622 name
= TYPE_NFIELDS (ttype
) > 0 ? TYPE_FIELD_NAME (ttype
, 0) : (char *) 0;
623 if (name
!= NULL
&& strcmp (name
, "vtable") == 0)
625 if (java_object_type
== NULL
)
626 java_object_type
= type
;
634 java_primitive_type (int signature
)
639 return java_byte_type
;
641 return java_short_type
;
643 return java_int_type
;
645 return java_long_type
;
647 return java_boolean_type
;
649 return java_char_type
;
651 return java_float_type
;
653 return java_double_type
;
655 return java_void_type
;
657 error ("unknown signature '%c' for primitive type", (char) signature
);
660 /* If name[0 .. namelen-1] is the name of a primitive Java type,
661 return that type. Otherwise, return NULL. */
664 java_primitive_type_from_name (char *name
, int namelen
)
669 if (namelen
== 4 && memcmp (name
, "byte", 4) == 0)
670 return java_byte_type
;
671 if (namelen
== 7 && memcmp (name
, "boolean", 7) == 0)
672 return java_boolean_type
;
675 if (namelen
== 4 && memcmp (name
, "char", 4) == 0)
676 return java_char_type
;
678 if (namelen
== 6 && memcmp (name
, "double", 6) == 0)
679 return java_double_type
;
682 if (namelen
== 5 && memcmp (name
, "float", 5) == 0)
683 return java_float_type
;
686 if (namelen
== 3 && memcmp (name
, "int", 3) == 0)
687 return java_int_type
;
690 if (namelen
== 4 && memcmp (name
, "long", 4) == 0)
691 return java_long_type
;
694 if (namelen
== 5 && memcmp (name
, "short", 5) == 0)
695 return java_short_type
;
698 if (namelen
== 4 && memcmp (name
, "void", 4) == 0)
699 return java_void_type
;
705 /* Return the length (in bytes) of demangled name of the Java type
706 signature string SIGNATURE. */
709 java_demangled_signature_length (char *signature
)
712 for (; *signature
== '['; signature
++)
713 array
+= 2; /* Two chars for "[]". */
714 switch (signature
[0])
717 /* Subtract 2 for 'L' and ';'. */
718 return strlen (signature
) - 2 + array
;
720 return strlen (TYPE_NAME (java_primitive_type (signature
[0]))) + array
;
724 /* Demangle the Java type signature SIGNATURE, leaving the result in RESULT. */
727 java_demangled_signature_copy (char *result
, char *signature
)
732 while (*signature
== '[')
737 switch (signature
[0])
740 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
743 for (; *signature
!= ';' && *signature
!= '\0'; signature
++)
745 if (*signature
== '/')
752 ptr
= TYPE_NAME (java_primitive_type (signature
[0]));
754 strcpy (result
, ptr
);
765 /* Return the demangled name of the Java type signature string SIGNATURE,
766 as a freshly allocated copy. */
769 java_demangle_type_signature (char *signature
)
771 int length
= java_demangled_signature_length (signature
);
772 char *result
= xmalloc (length
+ 1);
773 java_demangled_signature_copy (result
, signature
);
774 result
[length
] = '\0';
779 java_lookup_type (char *signature
)
781 switch (signature
[0])
785 error ("java_lookup_type not fully implemented");
787 return java_primitive_type (signature
[0]);
791 /* Return the type of TYPE followed by DIMS pairs of [ ].
792 If DIMS == 0, TYPE is returned. */
795 java_array_type (struct type
*type
, int dims
)
797 struct type
*range_type
;
801 range_type
= create_range_type (NULL
, builtin_type_int
, 0, 0);
802 /* FIXME This is bogus! Java arrays are not gdb arrays! */
803 type
= create_array_type (NULL
, type
, range_type
);
809 /* Create a Java string in the inferior from a (Utf8) literal. */
811 static struct value
*
812 java_value_string (char *ptr
, int len
)
814 error ("not implemented - java_value_string"); /* FIXME */
817 /* Print the character C on STREAM as part of the contents of a literal
818 string whose delimiter is QUOTER. Note that that format for printing
819 characters and strings is language specific. */
822 java_emit_char (int c
, struct ui_file
*stream
, int quoter
)
828 fprintf_filtered (stream
, "\\%c", c
);
831 fputs_filtered ("\\b", stream
);
834 fputs_filtered ("\\t", stream
);
837 fputs_filtered ("\\n", stream
);
840 fputs_filtered ("\\f", stream
);
843 fputs_filtered ("\\r", stream
);
847 fputc_filtered (c
, stream
);
849 fprintf_filtered (stream
, "\\u%.4x", (unsigned int) c
);
854 static struct value
*
855 evaluate_subexp_java (struct type
*expect_type
, register struct expression
*exp
,
856 register int *pos
, enum noside noside
)
861 enum exp_opcode op
= exp
->elts
[*pos
].opcode
;
868 if (noside
== EVAL_SKIP
)
871 arg1
= evaluate_subexp_java (NULL_TYPE
, exp
, pos
, EVAL_NORMAL
);
872 if (is_object_type (VALUE_TYPE (arg1
)))
876 type
= type_from_class (java_class_from_object (arg1
));
877 arg1
= value_cast (lookup_pointer_type (type
), arg1
);
879 if (noside
== EVAL_SKIP
)
881 return value_ind (arg1
);
883 case BINOP_SUBSCRIPT
:
885 arg1
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
886 arg2
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
887 if (noside
== EVAL_SKIP
)
889 /* If the user attempts to subscript something that is not an
890 array or pointer type (like a plain int variable for example),
891 then report this as an error. */
894 type
= check_typedef (VALUE_TYPE (arg1
));
895 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
896 type
= check_typedef (TYPE_TARGET_TYPE (type
));
897 name
= TYPE_NAME (type
);
899 name
= TYPE_TAG_NAME (type
);
900 i
= name
== NULL
? 0 : strlen (name
);
901 if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
902 && i
> 2 && name
[i
- 1] == ']')
906 struct type
*el_type
;
909 struct value
*clas
= java_class_from_object (arg1
);
910 struct value
*temp
= clas
;
911 /* Get CLASS_ELEMENT_TYPE of the array type. */
912 temp
= value_struct_elt (&temp
, NULL
, "methods",
914 VALUE_TYPE (temp
) = VALUE_TYPE (clas
);
915 el_type
= type_from_class (temp
);
916 if (TYPE_CODE (el_type
) == TYPE_CODE_STRUCT
)
917 el_type
= lookup_pointer_type (el_type
);
919 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
920 return value_zero (el_type
, VALUE_LVAL (arg1
));
921 address
= value_as_address (arg1
);
922 address
+= JAVA_OBJECT_SIZE
;
923 read_memory (address
, buf4
, 4);
924 length
= (long) extract_signed_integer (buf4
, 4);
925 index
= (long) value_as_long (arg2
);
926 if (index
>= length
|| index
< 0)
927 error ("array index (%ld) out of bounds (length: %ld)",
929 address
= (address
+ 4) + index
* TYPE_LENGTH (el_type
);
930 return value_at (el_type
, address
, NULL
);
932 else if (TYPE_CODE (type
) == TYPE_CODE_ARRAY
)
934 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
935 return value_zero (TYPE_TARGET_TYPE (type
), VALUE_LVAL (arg1
));
937 return value_subscript (arg1
, arg2
);
940 error ("cannot subscript something of type `%s'", name
);
942 error ("cannot subscript requested type");
946 i
= longest_to_int (exp
->elts
[pc
+ 1].longconst
);
947 (*pos
) += 3 + BYTES_TO_EXP_ELEM (i
+ 1);
948 if (noside
== EVAL_SKIP
)
950 return java_value_string (&exp
->elts
[pc
+ 2].string
, i
);
952 case STRUCTOP_STRUCT
:
953 arg1
= evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
954 /* Convert object field (such as TYPE.class) to reference. */
955 if (TYPE_CODE (VALUE_TYPE (arg1
)) == TYPE_CODE_STRUCT
)
956 arg1
= value_addr (arg1
);
962 return evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
964 return value_from_longest (builtin_type_long
, (LONGEST
) 1);
968 java_create_fundamental_type (struct objfile
*objfile
, int typeid)
973 return java_void_type
;
975 return java_boolean_type
;
977 return java_char_type
;
979 return java_float_type
;
980 case FT_DBL_PREC_FLOAT
:
981 return java_double_type
;
984 return java_byte_type
;
986 case FT_SIGNED_SHORT
:
987 return java_short_type
;
989 case FT_SIGNED_INTEGER
:
990 return java_int_type
;
993 return java_long_type
;
995 return c_create_fundamental_type (objfile
, typeid);
998 /* Table mapping opcodes into strings for printing operators
999 and precedences of the operators. */
1001 const struct op_print java_op_print_tab
[] =
1003 {",", BINOP_COMMA
, PREC_COMMA
, 0},
1004 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
1005 {"||", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
1006 {"&&", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
1007 {"|", BINOP_BITWISE_IOR
, PREC_BITWISE_IOR
, 0},
1008 {"^", BINOP_BITWISE_XOR
, PREC_BITWISE_XOR
, 0},
1009 {"&", BINOP_BITWISE_AND
, PREC_BITWISE_AND
, 0},
1010 {"==", BINOP_EQUAL
, PREC_EQUAL
, 0},
1011 {"!=", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
1012 {"<=", BINOP_LEQ
, PREC_ORDER
, 0},
1013 {">=", BINOP_GEQ
, PREC_ORDER
, 0},
1014 {">", BINOP_GTR
, PREC_ORDER
, 0},
1015 {"<", BINOP_LESS
, PREC_ORDER
, 0},
1016 {">>", BINOP_RSH
, PREC_SHIFT
, 0},
1017 {"<<", BINOP_LSH
, PREC_SHIFT
, 0},
1019 {">>>", BINOP_
? ? ?, PREC_SHIFT
, 0},
1021 {"+", BINOP_ADD
, PREC_ADD
, 0},
1022 {"-", BINOP_SUB
, PREC_ADD
, 0},
1023 {"*", BINOP_MUL
, PREC_MUL
, 0},
1024 {"/", BINOP_DIV
, PREC_MUL
, 0},
1025 {"%", BINOP_REM
, PREC_MUL
, 0},
1026 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
1027 {"!", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
1028 {"~", UNOP_COMPLEMENT
, PREC_PREFIX
, 0},
1029 {"*", UNOP_IND
, PREC_PREFIX
, 0},
1031 {"instanceof", ? ? ?, ? ? ?, 0},
1033 {"++", UNOP_PREINCREMENT
, PREC_PREFIX
, 0},
1034 {"--", UNOP_PREDECREMENT
, PREC_PREFIX
, 0},
1038 const struct language_defn java_language_defn
=
1040 "java", /* Language name */
1048 evaluate_subexp_java
,
1049 c_printchar
, /* Print a character constant */
1050 c_printstr
, /* Function to print string constant */
1051 java_emit_char
, /* Function to print a single character */
1052 java_create_fundamental_type
, /* Create fundamental type in this language */
1053 java_print_type
, /* Print a type using appropriate syntax */
1054 java_val_print
, /* Print a value using appropriate syntax */
1055 java_value_print
, /* Print a top-level value */
1056 {"", "", "", ""}, /* Binary format info */
1057 {"0%lo", "0", "o", ""}, /* Octal format info */
1058 {"%ld", "", "d", ""}, /* Decimal format info */
1059 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1060 java_op_print_tab
, /* expression operators for printing */
1061 0, /* not c-style arrays */
1062 0, /* String lower bound */
1063 &builtin_type_char
, /* Type of string elements */
1068 _initialize_java_language (void)
1071 java_int_type
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1072 java_short_type
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1073 java_long_type
= init_type (TYPE_CODE_INT
, 8, 0, "long", NULL
);
1074 java_byte_type
= init_type (TYPE_CODE_INT
, 1, 0, "byte", NULL
);
1075 java_boolean_type
= init_type (TYPE_CODE_BOOL
, 1, 0, "boolean", NULL
);
1076 java_char_type
= init_type (TYPE_CODE_CHAR
, 2, TYPE_FLAG_UNSIGNED
, "char", NULL
);
1077 java_float_type
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1078 java_double_type
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1079 java_void_type
= init_type (TYPE_CODE_VOID
, 1, 0, "void", NULL
);
1081 add_language (&java_language_defn
);
1084 /* Cleanup code that should be run on every "run".
1085 We should use make_run_cleanup to have this be called.
1086 But will that mess up values in value histry? FIXME */
1088 extern void java_rerun_cleanup (void);
1090 java_rerun_cleanup (void)
1092 if (class_symtab
!= NULL
)
1094 free_symtab (class_symtab
); /* ??? */
1095 class_symtab
= NULL
;
1097 if (dynamics_objfile
!= NULL
)
1099 free_objfile (dynamics_objfile
);
1100 dynamics_objfile
= NULL
;
1103 java_object_type
= NULL
;