1 /* Java language support routines for GDB, the GNU debugger.
2 Copyright 1997, 1998, 1999 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, Boston, MA 02111-1307, USA. */
23 #include "expression.h"
24 #include "parser-defs.h"
30 #include "gdb_string.h"
37 struct type
*java_int_type
;
38 struct type
*java_byte_type
;
39 struct type
*java_short_type
;
40 struct type
*java_long_type
;
41 struct type
*java_boolean_type
;
42 struct type
*java_char_type
;
43 struct type
*java_float_type
;
44 struct type
*java_double_type
;
45 struct type
*java_void_type
;
49 extern void _initialize_java_language
PARAMS ((void));
51 static int java_demangled_signature_length
PARAMS ((char*));
52 static void java_demangled_signature_copy
PARAMS ((char*, char*));
54 static struct symtab
*get_java_class_symtab
PARAMS ((void));
55 static char *get_java_utf8_name
PARAMS ((struct obstack
*obstack
, value_ptr name
));
56 static int java_class_is_primitive
PARAMS ((value_ptr clas
));
57 static struct type
*java_lookup_type
PARAMS ((char *signature
));
58 static value_ptr java_value_string
PARAMS ((char *ptr
, int len
));
60 static void java_emit_char
PARAMS ((int c
, GDB_FILE
*stream
, int quoter
));
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 static struct type
*java_link_class_type
PARAMS ((struct type
*, value_ptr
));
70 static struct objfile
*
71 get_dynamics_objfile ()
73 if (dynamics_objfile
== NULL
)
75 dynamics_objfile
= allocate_objfile (NULL
, 0, 0, 0);
77 return dynamics_objfile
;
81 /* symtab contains classes read from the inferior. */
83 static struct symtab
*class_symtab
= NULL
;
85 /* Maximum number of class in class_symtab before relocation is needed. */
87 static int class_symtab_space
;
89 static struct symtab
*
90 get_java_class_symtab ()
92 if (class_symtab
== NULL
)
94 struct objfile
*objfile
= get_dynamics_objfile();
95 struct blockvector
*bv
;
97 class_symtab
= allocate_symtab ("<java-classes>", objfile
);
98 class_symtab
->language
= language_java
;
99 bv
= (struct blockvector
*)
100 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct blockvector
));
101 BLOCKVECTOR_NBLOCKS (bv
) = 1;
102 BLOCKVECTOR (class_symtab
) = bv
;
104 /* Allocate dummy STATIC_BLOCK. */
105 bl
= (struct block
*)
106 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct block
));
107 BLOCK_NSYMS (bl
) = 0;
108 BLOCK_START (bl
) = 0;
110 BLOCK_FUNCTION (bl
) = NULL
;
111 BLOCK_SUPERBLOCK (bl
) = NULL
;
112 BLOCK_GCC_COMPILED (bl
) = 0;
113 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = bl
;
115 /* Allocate GLOBAL_BLOCK. This has to be relocatable. */
116 class_symtab_space
= 128;
117 bl
= (struct block
*)
118 mmalloc (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 (sym
)
132 struct symtab
*symtab
= get_java_class_symtab ();
133 struct blockvector
*bv
= BLOCKVECTOR (symtab
);
134 struct block
*bl
= BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
);
135 if (BLOCK_NSYMS (bl
) >= class_symtab_space
)
137 /* Need to re-allocate. */
138 class_symtab_space
*= 2;
139 bl
= (struct block
*)
140 mrealloc (symtab
->objfile
->md
, bl
,
141 sizeof (struct block
)
142 + ((class_symtab_space
- 1) * sizeof (struct symbol
*)));
143 class_symtab
->free_ptr
= (char *) bl
;
144 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
147 BLOCK_SYM (bl
, BLOCK_NSYMS (bl
)) = sym
;
148 BLOCK_NSYMS (bl
) = BLOCK_NSYMS (bl
) + 1;
151 static struct symbol
* add_class_symbol
PARAMS ((struct type
*type
, CORE_ADDR addr
));
153 static struct symbol
*
154 add_class_symbol (type
, addr
)
159 sym
= (struct symbol
*)
160 obstack_alloc (&dynamics_objfile
->symbol_obstack
, sizeof (struct symbol
));
161 memset (sym
, 0, sizeof (struct symbol
));
162 SYMBOL_LANGUAGE (sym
) = language_java
;
163 SYMBOL_NAME (sym
) = TYPE_TAG_NAME (type
);
164 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
165 /* SYMBOL_VALUE (sym) = valu;*/
166 SYMBOL_TYPE (sym
) = type
;
167 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
168 SYMBOL_VALUE_ADDRESS (sym
) = addr
;
174 java_lookup_class (name
)
178 sym
= lookup_symbol (name
, expression_context_block
, STRUCT_NAMESPACE
,
179 (int *) 0, (struct symtab
**) NULL
);
181 return SYMBOL_TYPE (sym
);
184 if (called from parser
)
186 call
lookup_class (or similar
) in inferior
;
189 addr
= found in inferior
;
194 type
= alloc_type (objfile
);
195 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
196 INIT_CPLUS_SPECIFIC (type
);
197 TYPE_TAG_NAME (type
) = obsavestring (name
, strlen(name
), &objfile
->type_obstack
);
198 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
202 /* FIXME - should search inferior's symbol table. */
207 /* Return a nul-terminated string (allocated on OBSTACK) for
208 a name given by NAME (which has type Utf8Const*). */
211 get_java_utf8_name (obstack
, name
)
212 struct obstack
*obstack
;
216 value_ptr temp
= name
;
219 temp
= value_struct_elt (&temp
, NULL
, "length", NULL
, "structure");
220 name_length
= (int) value_as_long (temp
);
221 data_addr
= VALUE_ADDRESS (temp
) + VALUE_OFFSET (temp
)
222 + TYPE_LENGTH (VALUE_TYPE (temp
));
223 chrs
= obstack_alloc (obstack
, name_length
+1);
224 chrs
[name_length
] = '\0';
225 read_memory_section (data_addr
, chrs
, name_length
, NULL
);
230 java_class_from_object (obj_val
)
233 /* This is all rather inefficient, since the offsets of vtable and
234 class are fixed. FIXME */
235 value_ptr 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_pointer (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 (clas
)
251 value_ptr vtable
= value_struct_elt (&clas
, NULL
, "vtable", NULL
, "struct");
252 CORE_ADDR i
= value_as_pointer (vtable
);
253 return (int) (i
& 0x7fffffff) == (int) 0x7fffffff;
256 /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
259 type_from_class (clas
)
265 struct objfile
*objfile
;
273 type
= check_typedef (VALUE_TYPE (clas
));
274 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
276 if (value_logical_not (clas
))
278 clas
= value_ind (clas
);
280 addr
= VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
);
283 get_java_class_symtab ();
284 bl
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab
), GLOBAL_BLOCK
);
285 for (i
= BLOCK_NSYMS (bl
); --i
>= 0; )
287 struct symbol
*sym
= BLOCK_SYM (bl
, i
);
288 if (SYMBOL_VALUE_ADDRESS (sym
) == addr
)
289 return SYMBOL_TYPE (sym
);
293 objfile
= get_dynamics_objfile();
294 if (java_class_is_primitive (clas
))
298 sig
= value_struct_elt (&temp
, NULL
, "method_count", NULL
, "structure");
299 return java_primitive_type (value_as_long (sig
));
302 /* Get Class name. */
303 /* if clasloader non-null, prepend loader address. FIXME */
305 utf8_name
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
306 name
= get_java_utf8_name (&objfile
->type_obstack
, utf8_name
);
307 for (nptr
= name
; *nptr
!= 0; nptr
++)
313 type
= java_lookup_class (name
);
317 type
= alloc_type (objfile
);
318 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
319 INIT_CPLUS_SPECIFIC (type
);
323 char *signature
= name
;
324 int namelen
= java_demangled_signature_length (signature
);
325 if (namelen
> strlen (name
))
326 name
= obstack_alloc (&objfile
->type_obstack
, namelen
+1);
327 java_demangled_signature_copy (name
, signature
);
328 name
[namelen
] = '\0';
331 /* Set array element type. */
332 temp
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
333 VALUE_TYPE (temp
) = lookup_pointer_type (VALUE_TYPE (clas
));
334 TYPE_TARGET_TYPE (type
) = type_from_class (temp
);
337 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
338 TYPE_TAG_NAME (type
) = name
;
340 add_class_symtab_symbol (add_class_symbol (type
, addr
));
341 return java_link_class_type (type
, clas
);
344 /* Fill in class TYPE with data from the CLAS value. */
347 java_link_class_type (type
, clas
)
352 char *unqualified_name
;
353 char *name
= TYPE_TAG_NAME (type
);
354 int ninterfaces
, nfields
, nmethods
;
355 int type_is_object
= 0;
356 struct fn_field
*fn_fields
;
357 struct fn_fieldlist
*fn_fieldlists
;
358 value_ptr fields
, field
, method
, methods
;
360 struct objfile
*objfile
= get_dynamics_objfile();
363 unqualified_name
= strrchr (name
, '.');
364 if (unqualified_name
== NULL
)
365 unqualified_name
= name
;
368 temp
= value_struct_elt (&temp
, NULL
, "superclass", NULL
, "structure");
369 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
371 tsuper
= get_java_object_type ();
372 if (tsuper
&& TYPE_CODE (tsuper
) == TYPE_CODE_PTR
)
373 tsuper
= TYPE_TARGET_TYPE (tsuper
);
377 tsuper
= type_from_class (temp
);
383 ninterfaces
= value_as_long (value_struct_elt (&temp
, NULL
, "interface_len", NULL
, "structure"));
385 TYPE_N_BASECLASSES (type
) = (tsuper
== NULL
? 0 : 1) + ninterfaces
;
387 nfields
= value_as_long (value_struct_elt (&temp
, NULL
, "field_count", NULL
, "structure"));
388 nfields
+= TYPE_N_BASECLASSES (type
);
389 nfields
++; /* Add one for dummy "class" field. */
390 TYPE_NFIELDS (type
) = nfields
;
391 TYPE_FIELDS (type
) = (struct field
*)
392 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
394 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
396 TYPE_FIELD_PRIVATE_BITS (type
) =
397 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
398 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
400 TYPE_FIELD_PROTECTED_BITS (type
) =
401 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
402 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
404 TYPE_FIELD_IGNORE_BITS (type
) =
405 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
406 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
408 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
409 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
410 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
414 TYPE_BASECLASS (type
, 0) = tsuper
;
416 SET_TYPE_FIELD_PRIVATE (type
, 0);
420 if (i
> 2 && name
[i
-1] == ']' && tsuper
!= NULL
)
423 TYPE_LENGTH (type
) = TYPE_LENGTH (tsuper
) + 4; /* size with "length" */
428 temp
= value_struct_elt (&temp
, NULL
, "size_in_bytes", NULL
, "structure");
429 TYPE_LENGTH (type
) = value_as_long (temp
);
433 nfields
--; /* First set up dummy "class" field. */
434 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, nfields
),
435 VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
));
436 TYPE_FIELD_NAME (type
, nfields
) = "class";
437 TYPE_FIELD_TYPE (type
, nfields
) = VALUE_TYPE (clas
);
438 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
440 for (i
= TYPE_N_BASECLASSES (type
); i
< nfields
; i
++)
447 fields
= value_struct_elt (&temp
, NULL
, "fields", NULL
, "structure");
448 field
= value_ind (fields
);
451 { /* Re-use field value for next field. */
452 VALUE_ADDRESS (field
) += TYPE_LENGTH (VALUE_TYPE (field
));
453 VALUE_LAZY (field
) = 1;
456 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
457 TYPE_FIELD_NAME (type
, i
) =
458 get_java_utf8_name (&objfile
->type_obstack
, temp
);
460 accflags
= value_as_long (value_struct_elt (&temp
, NULL
, "accflags",
463 temp
= value_struct_elt (&temp
, NULL
, "info", NULL
, "structure");
464 boffset
= value_as_long (value_struct_elt (&temp
, NULL
, "boffset",
466 if (accflags
& 0x0001) /* public access */
470 if (accflags
& 0x0002) /* private access */
472 SET_TYPE_FIELD_PRIVATE (type
, i
);
474 if (accflags
& 0x0004) /* protected access */
476 SET_TYPE_FIELD_PROTECTED (type
, i
);
478 if (accflags
& 0x0008) /* ACC_STATIC */
479 SET_FIELD_PHYSADDR(TYPE_FIELD(type
, i
), boffset
);
481 TYPE_FIELD_BITPOS (type
, i
) = 8 * boffset
;
482 if (accflags
& 0x8000) /* FIELD_UNRESOLVED_FLAG */
484 TYPE_FIELD_TYPE (type
, i
) = get_java_object_type (); /* FIXME */
490 temp
= value_struct_elt (&temp
, NULL
, "type", NULL
, "structure");
491 ftype
= type_from_class (temp
);
492 if (TYPE_CODE (ftype
) == TYPE_CODE_STRUCT
)
493 ftype
= lookup_pointer_type (ftype
);
494 TYPE_FIELD_TYPE (type
, i
) = ftype
;
499 nmethods
= value_as_long (value_struct_elt (&temp
, NULL
, "method_count",
501 TYPE_NFN_FIELDS_TOTAL (type
) = nmethods
;
502 j
= nmethods
* sizeof (struct fn_field
);
503 fn_fields
= (struct fn_field
*)
504 obstack_alloc (&dynamics_objfile
->symbol_obstack
, j
);
505 memset (fn_fields
, 0, j
);
506 fn_fieldlists
= (struct fn_fieldlist
*)
507 alloca (nmethods
* sizeof (struct fn_fieldlist
));
510 for (i
= 0; i
< nmethods
; i
++)
517 methods
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
518 method
= value_ind (methods
);
521 { /* Re-use method value for next method. */
522 VALUE_ADDRESS (method
) += TYPE_LENGTH (VALUE_TYPE (method
));
523 VALUE_LAZY (method
) = 1;
526 /* Get method name. */
528 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
529 mname
= get_java_utf8_name (&objfile
->type_obstack
, temp
);
530 if (strcmp (mname
, "<init>") == 0)
531 mname
= unqualified_name
;
533 /* Check for an existing method with the same name.
534 * This makes building the fn_fieldslists an O(nmethods**2)
535 * operation. That could be using hashing, but I doubt it
536 * is worth it. Note that we do maintain the order of methods
537 * in the inferior's Method table (as long as that is grouped
538 * by method name), which I think is desirable. --PB */
539 for (k
= 0, j
= TYPE_NFN_FIELDS (type
); ; )
542 { /* No match - new method name. */
543 j
= TYPE_NFN_FIELDS(type
)++;
544 fn_fieldlists
[j
].name
= mname
;
545 fn_fieldlists
[j
].length
= 1;
546 fn_fieldlists
[j
].fn_fields
= &fn_fields
[i
];
550 if (strcmp (mname
, fn_fieldlists
[j
].name
) == 0)
551 { /* Found an existing method with the same name. */
553 if (mname
!= unqualified_name
)
554 obstack_free (&objfile
->type_obstack
, mname
);
555 mname
= fn_fieldlists
[j
].name
;
556 fn_fieldlists
[j
].length
++;
557 k
= i
- k
; /* Index of new slot. */
558 /* Shift intervening fn_fields (between k and i) down. */
559 for (l
= i
; l
> k
; l
--) 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 ()
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 ()
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 (type
)
611 CHECK_TYPEDEF (type
);
612 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
614 struct type
*ttype
= check_typedef (TYPE_TARGET_TYPE (type
));
616 if (TYPE_CODE (ttype
) != TYPE_CODE_STRUCT
)
618 while (TYPE_N_BASECLASSES (ttype
) > 0)
619 ttype
= TYPE_BASECLASS (ttype
, 0);
620 name
= TYPE_TAG_NAME (ttype
);
621 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
623 name
= TYPE_NFIELDS (ttype
) > 0 ? TYPE_FIELD_NAME (ttype
, 0) : (char*)0;
624 if (name
!= NULL
&& strcmp (name
, "vtable") == 0)
626 if (java_object_type
== NULL
)
627 java_object_type
= type
;
635 java_primitive_type (signature
)
640 case 'B': return java_byte_type
;
641 case 'S': return java_short_type
;
642 case 'I': return java_int_type
;
643 case 'J': return java_long_type
;
644 case 'Z': return java_boolean_type
;
645 case 'C': return java_char_type
;
646 case 'F': return java_float_type
;
647 case 'D': return java_double_type
;
648 case 'V': 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 (name
, namelen
)
664 if (namelen
== 4 && memcmp (name
, "byte", 4) == 0)
665 return java_byte_type
;
666 if (namelen
== 7 && memcmp (name
, "boolean", 7) == 0)
667 return java_boolean_type
;
670 if (namelen
== 4 && memcmp (name
, "char", 4) == 0)
671 return java_char_type
;
673 if (namelen
== 6 && memcmp (name
, "double", 6) == 0)
674 return java_double_type
;
677 if (namelen
== 5 && memcmp (name
, "float", 5) == 0)
678 return java_float_type
;
681 if (namelen
== 3 && memcmp (name
, "int", 3) == 0)
682 return java_int_type
;
685 if (namelen
== 4 && memcmp (name
, "long", 4) == 0)
686 return java_long_type
;
689 if (namelen
== 5 && memcmp (name
, "short", 5) == 0)
690 return java_short_type
;
693 if (namelen
== 4 && memcmp (name
, "void", 4) == 0)
694 return java_void_type
;
700 /* Return the length (in bytes) of demangled name of the Java type
701 signature string SIGNATURE. */
704 java_demangled_signature_length (signature
)
708 for (; *signature
== '['; signature
++)
709 array
+= 2; /* Two chars for "[]". */
710 switch (signature
[0])
713 /* Subtract 2 for 'L' and ';'. */
714 return strlen (signature
) - 2 + array
;
716 return strlen (TYPE_NAME (java_primitive_type (signature
[0]))) + array
;
720 /* Demangle the Java type signature SIGNATURE, leaving the result in RESULT. */
723 java_demangled_signature_copy (result
, signature
)
730 while (*signature
== '[')
735 switch (signature
[0])
738 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
741 for ( ; *signature
!= ';' && *signature
!= '\0'; signature
++)
743 if (*signature
== '/')
750 ptr
= TYPE_NAME (java_primitive_type (signature
[0]));
752 strcpy (result
, ptr
);
763 /* Return the demangled name of the Java type signature string SIGNATURE,
764 as a freshly allocated copy. */
767 java_demangle_type_signature (signature
)
770 int length
= java_demangled_signature_length (signature
);
771 char *result
= xmalloc (length
+ 1);
772 java_demangled_signature_copy (result
, signature
);
773 result
[length
] = '\0';
778 java_lookup_type (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 (type
, dims
)
799 struct type
*range_type
;
803 range_type
= create_range_type (NULL
, builtin_type_int
, 0, 0);
804 /* FIXME This is bogus! Java arrays are not gdb arrays! */
805 type
= create_array_type (NULL
, type
, range_type
);
811 /* Create a Java string in the inferior from a (Utf8) literal. */
814 java_value_string (ptr
, len
)
818 error ("not implemented - java_value_string"); /* FIXME */
821 /* Print the character C on STREAM as part of the contents of a literal
822 string whose delimiter is QUOTER. Note that that format for printing
823 characters and strings is language specific. */
826 java_emit_char (c
, stream
, quoter
)
835 fprintf_filtered (stream
, "\\%c", c
);
838 fputs_filtered ("\\b", stream
);
841 fputs_filtered ("\\t", stream
);
844 fputs_filtered ("\\n", stream
);
847 fputs_filtered ("\\f", stream
);
850 fputs_filtered ("\\r", stream
);
854 fputc_filtered (c
, stream
);
856 fprintf_filtered (stream
, "\\u%.4x", (unsigned int) c
);
862 evaluate_subexp_java (expect_type
, exp
, pos
, noside
)
863 struct type
*expect_type
;
864 register struct expression
*exp
;
871 enum exp_opcode op
= exp
->elts
[*pos
].opcode
;
872 value_ptr arg1
, arg2
;
877 if (noside
== EVAL_SKIP
)
880 arg1
= evaluate_subexp_java (NULL_TYPE
, exp
, pos
, EVAL_NORMAL
);
881 if (is_object_type (VALUE_TYPE (arg1
)))
885 type
= type_from_class (java_class_from_object (arg1
));
886 arg1
= value_cast (lookup_pointer_type (type
), arg1
);
888 if (noside
== EVAL_SKIP
)
890 return value_ind (arg1
);
892 case BINOP_SUBSCRIPT
:
894 arg1
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
895 arg2
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
896 if (noside
== EVAL_SKIP
)
898 /* If the user attempts to subscript something that is not an
899 array or pointer type (like a plain int variable for example),
900 then report this as an error. */
903 type
= check_typedef (VALUE_TYPE (arg1
));
904 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
905 type
= check_typedef (TYPE_TARGET_TYPE (type
));
906 name
= TYPE_NAME (type
);
908 name
= TYPE_TAG_NAME (type
);
909 i
= name
== NULL
? 0 : strlen (name
);
910 if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
911 && i
> 2 && name
[i
- 1] == ']')
915 struct type
*el_type
;
918 value_ptr clas
= java_class_from_object(arg1
);
919 value_ptr temp
= clas
;
920 /* Get CLASS_ELEMENT_TYPE of the array type. */
921 temp
= value_struct_elt (&temp
, NULL
, "methods",
923 VALUE_TYPE (temp
) = VALUE_TYPE (clas
);
924 el_type
= type_from_class (temp
);
925 if (TYPE_CODE (el_type
) == TYPE_CODE_STRUCT
)
926 el_type
= lookup_pointer_type (el_type
);
928 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
929 return value_zero (el_type
, VALUE_LVAL (arg1
));
930 address
= value_as_pointer (arg1
);
931 address
+= JAVA_OBJECT_SIZE
;
932 read_memory (address
, buf4
, 4);
933 length
= (long) extract_signed_integer (buf4
, 4);
934 index
= (long) value_as_long (arg2
);
935 if (index
>= length
|| index
< 0)
936 error ("array index (%ld) out of bounds (length: %ld)",
938 address
= (address
+ 4) + index
* TYPE_LENGTH (el_type
);
939 return value_at (el_type
, address
, NULL
);
941 else if (TYPE_CODE (type
) == TYPE_CODE_ARRAY
)
943 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
944 return value_zero (TYPE_TARGET_TYPE (type
), VALUE_LVAL (arg1
));
946 return value_subscript (arg1
, arg2
);
949 error ("cannot subscript something of type `%s'", name
);
951 error ("cannot subscript requested type");
955 i
= longest_to_int (exp
->elts
[pc
+ 1].longconst
);
956 (*pos
) += 3 + BYTES_TO_EXP_ELEM (i
+ 1);
957 if (noside
== EVAL_SKIP
)
959 return java_value_string (&exp
->elts
[pc
+ 2].string
, i
);
961 case STRUCTOP_STRUCT
:
962 arg1
= evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
963 /* Convert object field (such as TYPE.class) to reference. */
964 if (TYPE_CODE (VALUE_TYPE (arg1
)) == TYPE_CODE_STRUCT
)
965 arg1
= value_addr (arg1
);
971 return evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
973 return value_from_longest (builtin_type_long
, (LONGEST
) 1);
977 java_create_fundamental_type (objfile
, typeid)
978 struct objfile
*objfile
;
983 case FT_VOID
: return java_void_type
;
984 case FT_BOOLEAN
: return java_boolean_type
;
985 case FT_CHAR
: return java_char_type
;
986 case FT_FLOAT
: return java_float_type
;
987 case FT_DBL_PREC_FLOAT
: return java_double_type
;
988 case FT_BYTE
: case FT_SIGNED_CHAR
: return java_byte_type
;
989 case FT_SHORT
: case FT_SIGNED_SHORT
: return java_short_type
;
990 case FT_INTEGER
: case FT_SIGNED_INTEGER
: return java_int_type
;
991 case FT_LONG
: case FT_SIGNED_LONG
: return java_long_type
;
993 return c_create_fundamental_type (objfile
, typeid);
996 /* Table mapping opcodes into strings for printing operators
997 and precedences of the operators. */
999 const struct op_print java_op_print_tab
[] =
1001 {",", BINOP_COMMA
, PREC_COMMA
, 0},
1002 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
1003 {"||", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
1004 {"&&", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
1005 {"|", BINOP_BITWISE_IOR
, PREC_BITWISE_IOR
, 0},
1006 {"^", BINOP_BITWISE_XOR
, PREC_BITWISE_XOR
, 0},
1007 {"&", BINOP_BITWISE_AND
, PREC_BITWISE_AND
, 0},
1008 {"==", BINOP_EQUAL
, PREC_EQUAL
, 0},
1009 {"!=", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
1010 {"<=", BINOP_LEQ
, PREC_ORDER
, 0},
1011 {">=", BINOP_GEQ
, PREC_ORDER
, 0},
1012 {">", BINOP_GTR
, PREC_ORDER
, 0},
1013 {"<", BINOP_LESS
, PREC_ORDER
, 0},
1014 {">>", BINOP_RSH
, PREC_SHIFT
, 0},
1015 {"<<", BINOP_LSH
, PREC_SHIFT
, 0},
1017 {">>>", BINOP_
???, PREC_SHIFT
, 0},
1019 {"+", BINOP_ADD
, PREC_ADD
, 0},
1020 {"-", BINOP_SUB
, PREC_ADD
, 0},
1021 {"*", BINOP_MUL
, PREC_MUL
, 0},
1022 {"/", BINOP_DIV
, PREC_MUL
, 0},
1023 {"%", BINOP_REM
, PREC_MUL
, 0},
1024 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
1025 {"!", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
1026 {"~", UNOP_COMPLEMENT
, PREC_PREFIX
, 0},
1027 {"*", UNOP_IND
, PREC_PREFIX
, 0},
1029 {"instanceof", ???, ???, 0},
1031 {"++", UNOP_PREINCREMENT
, PREC_PREFIX
, 0},
1032 {"--", UNOP_PREDECREMENT
, PREC_PREFIX
, 0},
1036 const struct language_defn java_language_defn
= {
1037 "java", /* Language name */
1044 evaluate_subexp_java
,
1045 c_printchar
, /* Print a character constant */
1046 c_printstr
, /* Function to print string constant */
1047 java_emit_char
, /* Function to print a single character */
1048 java_create_fundamental_type
, /* Create fundamental type in this language */
1049 java_print_type
, /* Print a type using appropriate syntax */
1050 java_val_print
, /* Print a value using appropriate syntax */
1051 java_value_print
, /* Print a top-level value */
1052 {"", "", "", ""}, /* Binary format info */
1053 {"0%lo", "0", "o", ""}, /* Octal format info */
1054 {"%ld", "", "d", ""}, /* Decimal format info */
1055 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1056 java_op_print_tab
, /* expression operators for printing */
1057 0, /* not c-style arrays */
1058 0, /* String lower bound */
1059 &builtin_type_char
, /* Type of string elements */
1064 _initialize_java_language ()
1067 java_int_type
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1068 java_short_type
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1069 java_long_type
= init_type (TYPE_CODE_INT
, 8, 0, "long", NULL
);
1070 java_byte_type
= init_type (TYPE_CODE_INT
, 1, 0, "byte", NULL
);
1071 java_boolean_type
= init_type (TYPE_CODE_BOOL
, 1, 0, "boolean", NULL
);
1072 java_char_type
= init_type (TYPE_CODE_CHAR
, 2, TYPE_FLAG_UNSIGNED
, "char", NULL
);
1073 java_float_type
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1074 java_double_type
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1075 java_void_type
= init_type (TYPE_CODE_VOID
, 1, 0, "void", NULL
);
1077 add_language (&java_language_defn
);
1080 /* Cleanup code that should be run on every "run".
1081 We should use make_run_cleanup to have this be called.
1082 But will that mess up values in value histry? FIXME */
1084 extern void java_rerun_cleanup
PARAMS ((void));
1086 java_rerun_cleanup ()
1088 if (class_symtab
!= NULL
)
1090 free_symtab (class_symtab
); /* ??? */
1091 class_symtab
= NULL
;
1093 if (dynamics_objfile
!= NULL
)
1095 free_objfile (dynamics_objfile
);
1096 dynamics_objfile
= NULL
;
1099 java_object_type
= NULL
;