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 static struct objfile
*
72 get_dynamics_objfile (void)
74 if (dynamics_objfile
== NULL
)
76 dynamics_objfile
= allocate_objfile (NULL
, 0);
78 return dynamics_objfile
;
82 /* symtab contains classes read from the inferior. */
84 static struct symtab
*class_symtab
= NULL
;
86 /* Maximum number of class in class_symtab before relocation is needed. */
88 static int class_symtab_space
;
90 static struct symtab
*
91 get_java_class_symtab (void)
93 if (class_symtab
== NULL
)
95 struct objfile
*objfile
= get_dynamics_objfile ();
96 struct blockvector
*bv
;
98 class_symtab
= allocate_symtab ("<java-classes>", objfile
);
99 class_symtab
->language
= language_java
;
100 bv
= (struct blockvector
*)
101 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct blockvector
));
102 BLOCKVECTOR_NBLOCKS (bv
) = 1;
103 BLOCKVECTOR (class_symtab
) = bv
;
105 /* Allocate dummy STATIC_BLOCK. */
106 bl
= (struct block
*)
107 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct block
));
108 BLOCK_NSYMS (bl
) = 0;
109 BLOCK_START (bl
) = 0;
111 BLOCK_FUNCTION (bl
) = NULL
;
112 BLOCK_SUPERBLOCK (bl
) = NULL
;
113 BLOCK_GCC_COMPILED (bl
) = 0;
114 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = bl
;
116 /* Allocate GLOBAL_BLOCK. This has to be relocatable. */
117 class_symtab_space
= 128;
118 bl
= xmmalloc (objfile
->md
,
119 sizeof (struct block
)
120 + ((class_symtab_space
- 1) * sizeof (struct symbol
*)));
121 *bl
= *BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
122 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
123 class_symtab
->free_ptr
= (char *) bl
;
129 add_class_symtab_symbol (struct symbol
*sym
)
131 struct symtab
*symtab
= get_java_class_symtab ();
132 struct blockvector
*bv
= BLOCKVECTOR (symtab
);
133 struct block
*bl
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
134 if (BLOCK_NSYMS (bl
) >= class_symtab_space
)
136 /* Need to re-allocate. */
137 class_symtab_space
*= 2;
138 bl
= xmrealloc (symtab
->objfile
->md
, bl
,
139 sizeof (struct block
)
140 + ((class_symtab_space
- 1) * sizeof (struct symbol
*)));
141 class_symtab
->free_ptr
= (char *) bl
;
142 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
145 BLOCK_SYM (bl
, BLOCK_NSYMS (bl
)) = sym
;
146 BLOCK_NSYMS (bl
) = BLOCK_NSYMS (bl
) + 1;
149 static struct symbol
*add_class_symbol (struct type
*type
, CORE_ADDR addr
);
151 static struct symbol
*
152 add_class_symbol (struct type
*type
, CORE_ADDR addr
)
155 sym
= (struct symbol
*)
156 obstack_alloc (&dynamics_objfile
->symbol_obstack
, sizeof (struct symbol
));
157 memset (sym
, 0, sizeof (struct symbol
));
158 SYMBOL_LANGUAGE (sym
) = language_java
;
159 SYMBOL_NAME (sym
) = TYPE_TAG_NAME (type
);
160 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
161 /* SYMBOL_VALUE (sym) = valu; */
162 SYMBOL_TYPE (sym
) = type
;
163 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
164 SYMBOL_VALUE_ADDRESS (sym
) = addr
;
170 java_lookup_class (char *name
)
173 sym
= lookup_symbol (name
, expression_context_block
, STRUCT_NAMESPACE
,
174 (int *) 0, (struct symtab
**) NULL
);
176 return SYMBOL_TYPE (sym
);
179 if (called from parser
)
181 call
lookup_class (or similar
) in inferior
;
185 addr
= found in inferior
;
190 type
= alloc_type (objfile
);
191 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
192 INIT_CPLUS_SPECIFIC (type
);
193 TYPE_TAG_NAME (type
) = obsavestring (name
, strlen (name
), &objfile
->type_obstack
);
194 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
198 /* FIXME - should search inferior's symbol table. */
203 /* Return a nul-terminated string (allocated on OBSTACK) for
204 a name given by NAME (which has type Utf8Const*). */
207 get_java_utf8_name (struct obstack
*obstack
, struct value
*name
)
210 struct value
*temp
= name
;
213 temp
= value_struct_elt (&temp
, NULL
, "length", NULL
, "structure");
214 name_length
= (int) value_as_long (temp
);
215 data_addr
= VALUE_ADDRESS (temp
) + VALUE_OFFSET (temp
)
216 + TYPE_LENGTH (VALUE_TYPE (temp
));
217 chrs
= obstack_alloc (obstack
, name_length
+ 1);
218 chrs
[name_length
] = '\0';
219 read_memory (data_addr
, chrs
, name_length
);
224 java_class_from_object (struct value
*obj_val
)
226 /* This is all rather inefficient, since the offsets of vtable and
227 class are fixed. FIXME */
228 struct value
*vtable_val
;
230 if (TYPE_CODE (VALUE_TYPE (obj_val
)) == TYPE_CODE_PTR
231 && TYPE_LENGTH (TYPE_TARGET_TYPE (VALUE_TYPE (obj_val
))) == 0)
232 obj_val
= value_at (get_java_object_type (),
233 value_as_address (obj_val
), NULL
);
235 vtable_val
= value_struct_elt (&obj_val
, NULL
, "vtable", NULL
, "structure");
236 return value_struct_elt (&vtable_val
, NULL
, "class", NULL
, "structure");
239 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
241 java_class_is_primitive (struct value
*clas
)
243 struct value
*vtable
= value_struct_elt (&clas
, NULL
, "vtable", NULL
, "struct");
244 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 value
*clas
)
256 struct objfile
*objfile
;
257 struct value
*utf8_name
;
264 type
= check_typedef (VALUE_TYPE (clas
));
265 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
267 if (value_logical_not (clas
))
269 clas
= value_ind (clas
);
271 addr
= VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
);
274 get_java_class_symtab ();
275 bl
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab
), GLOBAL_BLOCK
);
276 for (i
= BLOCK_NSYMS (bl
); --i
>= 0;)
278 struct symbol
*sym
= BLOCK_SYM (bl
, i
);
279 if (SYMBOL_VALUE_ADDRESS (sym
) == addr
)
280 return SYMBOL_TYPE (sym
);
284 objfile
= get_dynamics_objfile ();
285 if (java_class_is_primitive (clas
))
289 sig
= value_struct_elt (&temp
, NULL
, "method_count", NULL
, "structure");
290 return java_primitive_type (value_as_long (sig
));
293 /* Get Class name. */
294 /* if clasloader non-null, prepend loader address. FIXME */
296 utf8_name
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
297 name
= get_java_utf8_name (&objfile
->type_obstack
, utf8_name
);
298 for (nptr
= name
; *nptr
!= 0; nptr
++)
304 type
= java_lookup_class (name
);
308 type
= alloc_type (objfile
);
309 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
310 INIT_CPLUS_SPECIFIC (type
);
314 char *signature
= name
;
315 int namelen
= java_demangled_signature_length (signature
);
316 if (namelen
> strlen (name
))
317 name
= obstack_alloc (&objfile
->type_obstack
, namelen
+ 1);
318 java_demangled_signature_copy (name
, signature
);
319 name
[namelen
] = '\0';
322 /* Set array element type. */
323 temp
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
324 VALUE_TYPE (temp
) = lookup_pointer_type (VALUE_TYPE (clas
));
325 TYPE_TARGET_TYPE (type
) = type_from_class (temp
);
328 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
329 TYPE_TAG_NAME (type
) = name
;
331 add_class_symtab_symbol (add_class_symbol (type
, addr
));
332 return java_link_class_type (type
, clas
);
335 /* Fill in class TYPE with data from the CLAS value. */
338 java_link_class_type (struct type
*type
, struct value
*clas
)
341 char *unqualified_name
;
342 char *name
= TYPE_TAG_NAME (type
);
343 int ninterfaces
, nfields
, nmethods
;
344 int type_is_object
= 0;
345 struct fn_field
*fn_fields
;
346 struct fn_fieldlist
*fn_fieldlists
;
347 struct value
*fields
;
348 struct value
*methods
;
349 struct value
*method
= NULL
;
350 struct value
*field
= NULL
;
352 struct objfile
*objfile
= get_dynamics_objfile ();
355 unqualified_name
= strrchr (name
, '.');
356 if (unqualified_name
== NULL
)
357 unqualified_name
= name
;
360 temp
= value_struct_elt (&temp
, NULL
, "superclass", NULL
, "structure");
361 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
363 tsuper
= get_java_object_type ();
364 if (tsuper
&& TYPE_CODE (tsuper
) == TYPE_CODE_PTR
)
365 tsuper
= TYPE_TARGET_TYPE (tsuper
);
369 tsuper
= type_from_class (temp
);
375 ninterfaces
= value_as_long (value_struct_elt (&temp
, NULL
, "interface_len", NULL
, "structure"));
377 TYPE_N_BASECLASSES (type
) = (tsuper
== NULL
? 0 : 1) + ninterfaces
;
379 nfields
= value_as_long (value_struct_elt (&temp
, NULL
, "field_count", NULL
, "structure"));
380 nfields
+= TYPE_N_BASECLASSES (type
);
381 nfields
++; /* Add one for dummy "class" field. */
382 TYPE_NFIELDS (type
) = nfields
;
383 TYPE_FIELDS (type
) = (struct field
*)
384 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
386 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
388 TYPE_FIELD_PRIVATE_BITS (type
) =
389 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
390 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
392 TYPE_FIELD_PROTECTED_BITS (type
) =
393 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
394 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
396 TYPE_FIELD_IGNORE_BITS (type
) =
397 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
398 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
400 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
401 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
402 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
406 TYPE_BASECLASS (type
, 0) = tsuper
;
408 SET_TYPE_FIELD_PRIVATE (type
, 0);
412 if (i
> 2 && name
[i
- 1] == ']' && tsuper
!= NULL
)
415 TYPE_LENGTH (type
) = TYPE_LENGTH (tsuper
) + 4; /* size with "length" */
420 temp
= value_struct_elt (&temp
, NULL
, "size_in_bytes", NULL
, "structure");
421 TYPE_LENGTH (type
) = value_as_long (temp
);
425 nfields
--; /* First set up dummy "class" field. */
426 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, nfields
),
427 VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
));
428 TYPE_FIELD_NAME (type
, nfields
) = "class";
429 TYPE_FIELD_TYPE (type
, nfields
) = VALUE_TYPE (clas
);
430 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
432 for (i
= TYPE_N_BASECLASSES (type
); i
< nfields
; i
++)
439 fields
= value_struct_elt (&temp
, NULL
, "fields", NULL
, "structure");
440 field
= value_ind (fields
);
443 { /* Re-use field value for next field. */
444 VALUE_ADDRESS (field
) += TYPE_LENGTH (VALUE_TYPE (field
));
445 VALUE_LAZY (field
) = 1;
448 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
449 TYPE_FIELD_NAME (type
, i
) =
450 get_java_utf8_name (&objfile
->type_obstack
, temp
);
452 accflags
= value_as_long (value_struct_elt (&temp
, NULL
, "accflags",
455 temp
= value_struct_elt (&temp
, NULL
, "info", NULL
, "structure");
456 boffset
= value_as_long (value_struct_elt (&temp
, NULL
, "boffset",
458 if (accflags
& 0x0001) /* public access */
462 if (accflags
& 0x0002) /* private access */
464 SET_TYPE_FIELD_PRIVATE (type
, i
);
466 if (accflags
& 0x0004) /* protected access */
468 SET_TYPE_FIELD_PROTECTED (type
, i
);
470 if (accflags
& 0x0008) /* ACC_STATIC */
471 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, i
), boffset
);
473 TYPE_FIELD_BITPOS (type
, i
) = 8 * boffset
;
474 if (accflags
& 0x8000) /* FIELD_UNRESOLVED_FLAG */
476 TYPE_FIELD_TYPE (type
, i
) = get_java_object_type (); /* FIXME */
482 temp
= value_struct_elt (&temp
, NULL
, "type", NULL
, "structure");
483 ftype
= type_from_class (temp
);
484 if (TYPE_CODE (ftype
) == TYPE_CODE_STRUCT
)
485 ftype
= lookup_pointer_type (ftype
);
486 TYPE_FIELD_TYPE (type
, i
) = ftype
;
491 nmethods
= value_as_long (value_struct_elt (&temp
, NULL
, "method_count",
493 TYPE_NFN_FIELDS_TOTAL (type
) = nmethods
;
494 j
= nmethods
* sizeof (struct fn_field
);
495 fn_fields
= (struct fn_field
*)
496 obstack_alloc (&dynamics_objfile
->symbol_obstack
, j
);
497 memset (fn_fields
, 0, j
);
498 fn_fieldlists
= (struct fn_fieldlist
*)
499 alloca (nmethods
* sizeof (struct fn_fieldlist
));
502 for (i
= 0; i
< nmethods
; i
++)
509 methods
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
510 method
= value_ind (methods
);
513 { /* Re-use method value for next method. */
514 VALUE_ADDRESS (method
) += TYPE_LENGTH (VALUE_TYPE (method
));
515 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
->type_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. */
545 if (mname
!= unqualified_name
)
546 obstack_free (&objfile
->type_obstack
, mname
);
547 mname
= fn_fieldlists
[j
].name
;
548 fn_fieldlists
[j
].length
++;
549 k
= i
- k
; /* Index of new slot. */
550 /* Shift intervening fn_fields (between k and i) down. */
551 for (l
= i
; l
> k
; l
--)
552 fn_fields
[l
] = fn_fields
[l
- 1];
553 for (l
= TYPE_NFN_FIELDS (type
); --l
> j
;)
554 fn_fieldlists
[l
].fn_fields
++;
557 k
+= fn_fieldlists
[j
].length
;
559 fn_fields
[k
].physname
= "";
560 fn_fields
[k
].is_stub
= 1;
561 fn_fields
[k
].type
= make_function_type (java_void_type
, NULL
); /* FIXME */
562 TYPE_CODE (fn_fields
[k
].type
) = TYPE_CODE_METHOD
;
565 j
= TYPE_NFN_FIELDS (type
) * sizeof (struct fn_fieldlist
);
566 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
567 obstack_alloc (&dynamics_objfile
->symbol_obstack
, j
);
568 memcpy (TYPE_FN_FIELDLISTS (type
), fn_fieldlists
, j
);
573 static struct type
*java_object_type
;
576 get_java_object_type (void)
578 if (java_object_type
== NULL
)
581 sym
= lookup_symbol ("java.lang.Object", NULL
, STRUCT_NAMESPACE
,
582 (int *) 0, (struct symtab
**) NULL
);
584 error ("cannot find java.lang.Object");
585 java_object_type
= SYMBOL_TYPE (sym
);
587 return java_object_type
;
591 get_java_object_header_size (void)
593 struct type
*objtype
= get_java_object_type ();
595 return (2 * TARGET_PTR_BIT
/ TARGET_CHAR_BIT
);
597 return TYPE_LENGTH (objtype
);
601 is_object_type (struct type
*type
)
603 CHECK_TYPEDEF (type
);
604 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
606 struct type
*ttype
= check_typedef (TYPE_TARGET_TYPE (type
));
608 if (TYPE_CODE (ttype
) != TYPE_CODE_STRUCT
)
610 while (TYPE_N_BASECLASSES (ttype
) > 0)
611 ttype
= TYPE_BASECLASS (ttype
, 0);
612 name
= TYPE_TAG_NAME (ttype
);
613 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
615 name
= TYPE_NFIELDS (ttype
) > 0 ? TYPE_FIELD_NAME (ttype
, 0) : (char *) 0;
616 if (name
!= NULL
&& strcmp (name
, "vtable") == 0)
618 if (java_object_type
== NULL
)
619 java_object_type
= type
;
627 java_primitive_type (int signature
)
632 return java_byte_type
;
634 return java_short_type
;
636 return java_int_type
;
638 return java_long_type
;
640 return java_boolean_type
;
642 return java_char_type
;
644 return java_float_type
;
646 return java_double_type
;
648 return java_void_type
;
650 error ("unknown signature '%c' for primitive type", (char) signature
);
653 /* If name[0 .. namelen-1] is the name of a primitive Java type,
654 return that type. Otherwise, return NULL. */
657 java_primitive_type_from_name (char *name
, int namelen
)
662 if (namelen
== 4 && memcmp (name
, "byte", 4) == 0)
663 return java_byte_type
;
664 if (namelen
== 7 && memcmp (name
, "boolean", 7) == 0)
665 return java_boolean_type
;
668 if (namelen
== 4 && memcmp (name
, "char", 4) == 0)
669 return java_char_type
;
671 if (namelen
== 6 && memcmp (name
, "double", 6) == 0)
672 return java_double_type
;
675 if (namelen
== 5 && memcmp (name
, "float", 5) == 0)
676 return java_float_type
;
679 if (namelen
== 3 && memcmp (name
, "int", 3) == 0)
680 return java_int_type
;
683 if (namelen
== 4 && memcmp (name
, "long", 4) == 0)
684 return java_long_type
;
687 if (namelen
== 5 && memcmp (name
, "short", 5) == 0)
688 return java_short_type
;
691 if (namelen
== 4 && memcmp (name
, "void", 4) == 0)
692 return java_void_type
;
698 /* Return the length (in bytes) of demangled name of the Java type
699 signature string SIGNATURE. */
702 java_demangled_signature_length (char *signature
)
705 for (; *signature
== '['; signature
++)
706 array
+= 2; /* Two chars for "[]". */
707 switch (signature
[0])
710 /* Subtract 2 for 'L' and ';'. */
711 return strlen (signature
) - 2 + array
;
713 return strlen (TYPE_NAME (java_primitive_type (signature
[0]))) + array
;
717 /* Demangle the Java type signature SIGNATURE, leaving the result in RESULT. */
720 java_demangled_signature_copy (char *result
, char *signature
)
725 while (*signature
== '[')
730 switch (signature
[0])
733 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
736 for (; *signature
!= ';' && *signature
!= '\0'; signature
++)
738 if (*signature
== '/')
745 ptr
= TYPE_NAME (java_primitive_type (signature
[0]));
747 strcpy (result
, ptr
);
758 /* Return the demangled name of the Java type signature string SIGNATURE,
759 as a freshly allocated copy. */
762 java_demangle_type_signature (char *signature
)
764 int length
= java_demangled_signature_length (signature
);
765 char *result
= xmalloc (length
+ 1);
766 java_demangled_signature_copy (result
, signature
);
767 result
[length
] = '\0';
772 java_lookup_type (char *signature
)
774 switch (signature
[0])
778 error ("java_lookup_type not fully implemented");
780 return java_primitive_type (signature
[0]);
784 /* Return the type of TYPE followed by DIMS pairs of [ ].
785 If DIMS == 0, TYPE is returned. */
788 java_array_type (struct type
*type
, int dims
)
790 struct type
*range_type
;
794 range_type
= create_range_type (NULL
, builtin_type_int
, 0, 0);
795 /* FIXME This is bogus! Java arrays are not gdb arrays! */
796 type
= create_array_type (NULL
, type
, range_type
);
802 /* Create a Java string in the inferior from a (Utf8) literal. */
804 static struct value
*
805 java_value_string (char *ptr
, int len
)
807 error ("not implemented - java_value_string"); /* FIXME */
810 /* Print the character C on STREAM as part of the contents of a literal
811 string whose delimiter is QUOTER. Note that that format for printing
812 characters and strings is language specific. */
815 java_emit_char (int c
, struct ui_file
*stream
, int quoter
)
821 fprintf_filtered (stream
, "\\%c", c
);
824 fputs_filtered ("\\b", stream
);
827 fputs_filtered ("\\t", stream
);
830 fputs_filtered ("\\n", stream
);
833 fputs_filtered ("\\f", stream
);
836 fputs_filtered ("\\r", stream
);
840 fputc_filtered (c
, stream
);
842 fprintf_filtered (stream
, "\\u%.4x", (unsigned int) c
);
847 static struct value
*
848 evaluate_subexp_java (struct type
*expect_type
, register struct expression
*exp
,
849 register int *pos
, enum noside noside
)
854 enum exp_opcode op
= exp
->elts
[*pos
].opcode
;
861 if (noside
== EVAL_SKIP
)
864 arg1
= evaluate_subexp_java (NULL_TYPE
, exp
, pos
, EVAL_NORMAL
);
865 if (is_object_type (VALUE_TYPE (arg1
)))
869 type
= type_from_class (java_class_from_object (arg1
));
870 arg1
= value_cast (lookup_pointer_type (type
), arg1
);
872 if (noside
== EVAL_SKIP
)
874 return value_ind (arg1
);
876 case BINOP_SUBSCRIPT
:
878 arg1
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
879 arg2
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
880 if (noside
== EVAL_SKIP
)
882 /* If the user attempts to subscript something that is not an
883 array or pointer type (like a plain int variable for example),
884 then report this as an error. */
887 type
= check_typedef (VALUE_TYPE (arg1
));
888 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
889 type
= check_typedef (TYPE_TARGET_TYPE (type
));
890 name
= TYPE_NAME (type
);
892 name
= TYPE_TAG_NAME (type
);
893 i
= name
== NULL
? 0 : strlen (name
);
894 if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
895 && i
> 2 && name
[i
- 1] == ']')
899 struct type
*el_type
;
902 struct value
*clas
= java_class_from_object (arg1
);
903 struct value
*temp
= clas
;
904 /* Get CLASS_ELEMENT_TYPE of the array type. */
905 temp
= value_struct_elt (&temp
, NULL
, "methods",
907 VALUE_TYPE (temp
) = VALUE_TYPE (clas
);
908 el_type
= type_from_class (temp
);
909 if (TYPE_CODE (el_type
) == TYPE_CODE_STRUCT
)
910 el_type
= lookup_pointer_type (el_type
);
912 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
913 return value_zero (el_type
, VALUE_LVAL (arg1
));
914 address
= value_as_address (arg1
);
915 address
+= JAVA_OBJECT_SIZE
;
916 read_memory (address
, buf4
, 4);
917 length
= (long) extract_signed_integer (buf4
, 4);
918 index
= (long) value_as_long (arg2
);
919 if (index
>= length
|| index
< 0)
920 error ("array index (%ld) out of bounds (length: %ld)",
922 address
= (address
+ 4) + index
* TYPE_LENGTH (el_type
);
923 return value_at (el_type
, address
, NULL
);
925 else if (TYPE_CODE (type
) == TYPE_CODE_ARRAY
)
927 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
928 return value_zero (TYPE_TARGET_TYPE (type
), VALUE_LVAL (arg1
));
930 return value_subscript (arg1
, arg2
);
933 error ("cannot subscript something of type `%s'", name
);
935 error ("cannot subscript requested type");
939 i
= longest_to_int (exp
->elts
[pc
+ 1].longconst
);
940 (*pos
) += 3 + BYTES_TO_EXP_ELEM (i
+ 1);
941 if (noside
== EVAL_SKIP
)
943 return java_value_string (&exp
->elts
[pc
+ 2].string
, i
);
945 case STRUCTOP_STRUCT
:
946 arg1
= evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
947 /* Convert object field (such as TYPE.class) to reference. */
948 if (TYPE_CODE (VALUE_TYPE (arg1
)) == TYPE_CODE_STRUCT
)
949 arg1
= value_addr (arg1
);
955 return evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
957 return value_from_longest (builtin_type_long
, (LONGEST
) 1);
961 java_create_fundamental_type (struct objfile
*objfile
, int typeid)
966 return java_void_type
;
968 return java_boolean_type
;
970 return java_char_type
;
972 return java_float_type
;
973 case FT_DBL_PREC_FLOAT
:
974 return java_double_type
;
977 return java_byte_type
;
979 case FT_SIGNED_SHORT
:
980 return java_short_type
;
982 case FT_SIGNED_INTEGER
:
983 return java_int_type
;
986 return java_long_type
;
988 return c_create_fundamental_type (objfile
, typeid);
991 /* Table mapping opcodes into strings for printing operators
992 and precedences of the operators. */
994 const struct op_print java_op_print_tab
[] =
996 {",", BINOP_COMMA
, PREC_COMMA
, 0},
997 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
998 {"||", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
999 {"&&", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
1000 {"|", BINOP_BITWISE_IOR
, PREC_BITWISE_IOR
, 0},
1001 {"^", BINOP_BITWISE_XOR
, PREC_BITWISE_XOR
, 0},
1002 {"&", BINOP_BITWISE_AND
, PREC_BITWISE_AND
, 0},
1003 {"==", BINOP_EQUAL
, PREC_EQUAL
, 0},
1004 {"!=", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
1005 {"<=", BINOP_LEQ
, PREC_ORDER
, 0},
1006 {">=", BINOP_GEQ
, PREC_ORDER
, 0},
1007 {">", BINOP_GTR
, PREC_ORDER
, 0},
1008 {"<", BINOP_LESS
, PREC_ORDER
, 0},
1009 {">>", BINOP_RSH
, PREC_SHIFT
, 0},
1010 {"<<", BINOP_LSH
, PREC_SHIFT
, 0},
1012 {">>>", BINOP_
? ? ?, PREC_SHIFT
, 0},
1014 {"+", BINOP_ADD
, PREC_ADD
, 0},
1015 {"-", BINOP_SUB
, PREC_ADD
, 0},
1016 {"*", BINOP_MUL
, PREC_MUL
, 0},
1017 {"/", BINOP_DIV
, PREC_MUL
, 0},
1018 {"%", BINOP_REM
, PREC_MUL
, 0},
1019 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
1020 {"!", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
1021 {"~", UNOP_COMPLEMENT
, PREC_PREFIX
, 0},
1022 {"*", UNOP_IND
, PREC_PREFIX
, 0},
1024 {"instanceof", ? ? ?, ? ? ?, 0},
1026 {"++", UNOP_PREINCREMENT
, PREC_PREFIX
, 0},
1027 {"--", UNOP_PREDECREMENT
, PREC_PREFIX
, 0},
1031 const struct language_defn java_language_defn
=
1033 "java", /* Language name */
1041 evaluate_subexp_java
,
1042 c_printchar
, /* Print a character constant */
1043 c_printstr
, /* Function to print string constant */
1044 java_emit_char
, /* Function to print a single character */
1045 java_create_fundamental_type
, /* Create fundamental type in this language */
1046 java_print_type
, /* Print a type using appropriate syntax */
1047 java_val_print
, /* Print a value using appropriate syntax */
1048 java_value_print
, /* Print a top-level value */
1049 {"", "", "", ""}, /* Binary format info */
1050 {"0%lo", "0", "o", ""}, /* Octal format info */
1051 {"%ld", "", "d", ""}, /* Decimal format info */
1052 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1053 java_op_print_tab
, /* expression operators for printing */
1054 0, /* not c-style arrays */
1055 0, /* String lower bound */
1056 &builtin_type_char
, /* Type of string elements */
1061 _initialize_java_language (void)
1064 java_int_type
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1065 java_short_type
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1066 java_long_type
= init_type (TYPE_CODE_INT
, 8, 0, "long", NULL
);
1067 java_byte_type
= init_type (TYPE_CODE_INT
, 1, 0, "byte", NULL
);
1068 java_boolean_type
= init_type (TYPE_CODE_BOOL
, 1, 0, "boolean", NULL
);
1069 java_char_type
= init_type (TYPE_CODE_CHAR
, 2, TYPE_FLAG_UNSIGNED
, "char", NULL
);
1070 java_float_type
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1071 java_double_type
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1072 java_void_type
= init_type (TYPE_CODE_VOID
, 1, 0, "void", NULL
);
1074 add_language (&java_language_defn
);
1077 /* Cleanup code that should be run on every "run".
1078 We should use make_run_cleanup to have this be called.
1079 But will that mess up values in value histry? FIXME */
1081 extern void java_rerun_cleanup (void);
1083 java_rerun_cleanup (void)
1085 if (class_symtab
!= NULL
)
1087 free_symtab (class_symtab
); /* ??? */
1088 class_symtab
= NULL
;
1090 if (dynamics_objfile
!= NULL
)
1092 free_objfile (dynamics_objfile
);
1093 dynamics_objfile
= NULL
;
1096 java_object_type
= NULL
;