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
= (struct block
*)
119 mmalloc (objfile
->md
,
120 sizeof (struct block
)
121 + ((class_symtab_space
- 1) * sizeof (struct symbol
*)));
122 *bl
= *BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
);
123 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
124 class_symtab
->free_ptr
= (char *) bl
;
130 add_class_symtab_symbol (struct 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 (struct type
*type
, CORE_ADDR addr
);
153 static struct symbol
*
154 add_class_symbol (struct type
*type
, CORE_ADDR addr
)
157 sym
= (struct symbol
*)
158 obstack_alloc (&dynamics_objfile
->symbol_obstack
, sizeof (struct symbol
));
159 memset (sym
, 0, sizeof (struct symbol
));
160 SYMBOL_LANGUAGE (sym
) = language_java
;
161 SYMBOL_NAME (sym
) = TYPE_TAG_NAME (type
);
162 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
163 /* SYMBOL_VALUE (sym) = valu; */
164 SYMBOL_TYPE (sym
) = type
;
165 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
166 SYMBOL_VALUE_ADDRESS (sym
) = addr
;
172 java_lookup_class (char *name
)
175 sym
= lookup_symbol (name
, expression_context_block
, STRUCT_NAMESPACE
,
176 (int *) 0, (struct symtab
**) NULL
);
178 return SYMBOL_TYPE (sym
);
181 if (called from parser
)
183 call
lookup_class (or similar
) in inferior
;
187 addr
= found in inferior
;
192 type
= alloc_type (objfile
);
193 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
194 INIT_CPLUS_SPECIFIC (type
);
195 TYPE_TAG_NAME (type
) = obsavestring (name
, strlen (name
), &objfile
->type_obstack
);
196 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
200 /* FIXME - should search inferior's symbol table. */
205 /* Return a nul-terminated string (allocated on OBSTACK) for
206 a name given by NAME (which has type Utf8Const*). */
209 get_java_utf8_name (struct obstack
*obstack
, struct value
*name
)
212 struct value
*temp
= name
;
215 temp
= value_struct_elt (&temp
, NULL
, "length", NULL
, "structure");
216 name_length
= (int) value_as_long (temp
);
217 data_addr
= VALUE_ADDRESS (temp
) + VALUE_OFFSET (temp
)
218 + TYPE_LENGTH (VALUE_TYPE (temp
));
219 chrs
= obstack_alloc (obstack
, name_length
+ 1);
220 chrs
[name_length
] = '\0';
221 read_memory (data_addr
, chrs
, name_length
);
226 java_class_from_object (struct value
*obj_val
)
228 /* This is all rather inefficient, since the offsets of vtable and
229 class are fixed. FIXME */
230 struct value
*vtable_val
;
232 if (TYPE_CODE (VALUE_TYPE (obj_val
)) == TYPE_CODE_PTR
233 && TYPE_LENGTH (TYPE_TARGET_TYPE (VALUE_TYPE (obj_val
))) == 0)
234 obj_val
= value_at (get_java_object_type (),
235 value_as_address (obj_val
), NULL
);
237 vtable_val
= value_struct_elt (&obj_val
, NULL
, "vtable", NULL
, "structure");
238 return value_struct_elt (&vtable_val
, NULL
, "class", NULL
, "structure");
241 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
243 java_class_is_primitive (struct value
*clas
)
245 struct value
*vtable
= value_struct_elt (&clas
, NULL
, "vtable", NULL
, "struct");
246 CORE_ADDR i
= value_as_address (vtable
);
247 return (int) (i
& 0x7fffffff) == (int) 0x7fffffff;
250 /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
253 type_from_class (struct value
*clas
)
258 struct objfile
*objfile
;
259 struct value
*utf8_name
;
266 type
= check_typedef (VALUE_TYPE (clas
));
267 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
269 if (value_logical_not (clas
))
271 clas
= value_ind (clas
);
273 addr
= VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
);
276 get_java_class_symtab ();
277 bl
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab
), GLOBAL_BLOCK
);
278 for (i
= BLOCK_NSYMS (bl
); --i
>= 0;)
280 struct symbol
*sym
= BLOCK_SYM (bl
, i
);
281 if (SYMBOL_VALUE_ADDRESS (sym
) == addr
)
282 return SYMBOL_TYPE (sym
);
286 objfile
= get_dynamics_objfile ();
287 if (java_class_is_primitive (clas
))
291 sig
= value_struct_elt (&temp
, NULL
, "method_count", NULL
, "structure");
292 return java_primitive_type (value_as_long (sig
));
295 /* Get Class name. */
296 /* if clasloader non-null, prepend loader address. FIXME */
298 utf8_name
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
299 name
= get_java_utf8_name (&objfile
->type_obstack
, utf8_name
);
300 for (nptr
= name
; *nptr
!= 0; nptr
++)
306 type
= java_lookup_class (name
);
310 type
= alloc_type (objfile
);
311 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
312 INIT_CPLUS_SPECIFIC (type
);
316 char *signature
= name
;
317 int namelen
= java_demangled_signature_length (signature
);
318 if (namelen
> strlen (name
))
319 name
= obstack_alloc (&objfile
->type_obstack
, namelen
+ 1);
320 java_demangled_signature_copy (name
, signature
);
321 name
[namelen
] = '\0';
324 /* Set array element type. */
325 temp
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
326 VALUE_TYPE (temp
) = lookup_pointer_type (VALUE_TYPE (clas
));
327 TYPE_TARGET_TYPE (type
) = type_from_class (temp
);
330 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
331 TYPE_TAG_NAME (type
) = name
;
333 add_class_symtab_symbol (add_class_symbol (type
, addr
));
334 return java_link_class_type (type
, clas
);
337 /* Fill in class TYPE with data from the CLAS value. */
340 java_link_class_type (struct type
*type
, struct value
*clas
)
343 char *unqualified_name
;
344 char *name
= TYPE_TAG_NAME (type
);
345 int ninterfaces
, nfields
, nmethods
;
346 int type_is_object
= 0;
347 struct fn_field
*fn_fields
;
348 struct fn_fieldlist
*fn_fieldlists
;
349 struct value
*fields
;
350 struct value
*methods
;
351 struct value
*method
= NULL
;
352 struct value
*field
= NULL
;
354 struct objfile
*objfile
= get_dynamics_objfile ();
357 unqualified_name
= strrchr (name
, '.');
358 if (unqualified_name
== NULL
)
359 unqualified_name
= name
;
362 temp
= value_struct_elt (&temp
, NULL
, "superclass", NULL
, "structure");
363 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
365 tsuper
= get_java_object_type ();
366 if (tsuper
&& TYPE_CODE (tsuper
) == TYPE_CODE_PTR
)
367 tsuper
= TYPE_TARGET_TYPE (tsuper
);
371 tsuper
= type_from_class (temp
);
377 ninterfaces
= value_as_long (value_struct_elt (&temp
, NULL
, "interface_len", NULL
, "structure"));
379 TYPE_N_BASECLASSES (type
) = (tsuper
== NULL
? 0 : 1) + ninterfaces
;
381 nfields
= value_as_long (value_struct_elt (&temp
, NULL
, "field_count", NULL
, "structure"));
382 nfields
+= TYPE_N_BASECLASSES (type
);
383 nfields
++; /* Add one for dummy "class" field. */
384 TYPE_NFIELDS (type
) = nfields
;
385 TYPE_FIELDS (type
) = (struct field
*)
386 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
388 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
390 TYPE_FIELD_PRIVATE_BITS (type
) =
391 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
392 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
394 TYPE_FIELD_PROTECTED_BITS (type
) =
395 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
396 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
398 TYPE_FIELD_IGNORE_BITS (type
) =
399 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
400 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
402 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
403 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
404 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
408 TYPE_BASECLASS (type
, 0) = tsuper
;
410 SET_TYPE_FIELD_PRIVATE (type
, 0);
414 if (i
> 2 && name
[i
- 1] == ']' && tsuper
!= NULL
)
417 TYPE_LENGTH (type
) = TYPE_LENGTH (tsuper
) + 4; /* size with "length" */
422 temp
= value_struct_elt (&temp
, NULL
, "size_in_bytes", NULL
, "structure");
423 TYPE_LENGTH (type
) = value_as_long (temp
);
427 nfields
--; /* First set up dummy "class" field. */
428 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, nfields
),
429 VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
));
430 TYPE_FIELD_NAME (type
, nfields
) = "class";
431 TYPE_FIELD_TYPE (type
, nfields
) = VALUE_TYPE (clas
);
432 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
434 for (i
= TYPE_N_BASECLASSES (type
); i
< nfields
; i
++)
441 fields
= value_struct_elt (&temp
, NULL
, "fields", NULL
, "structure");
442 field
= value_ind (fields
);
445 { /* Re-use field value for next field. */
446 VALUE_ADDRESS (field
) += TYPE_LENGTH (VALUE_TYPE (field
));
447 VALUE_LAZY (field
) = 1;
450 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
451 TYPE_FIELD_NAME (type
, i
) =
452 get_java_utf8_name (&objfile
->type_obstack
, temp
);
454 accflags
= value_as_long (value_struct_elt (&temp
, NULL
, "accflags",
457 temp
= value_struct_elt (&temp
, NULL
, "info", NULL
, "structure");
458 boffset
= value_as_long (value_struct_elt (&temp
, NULL
, "boffset",
460 if (accflags
& 0x0001) /* public access */
464 if (accflags
& 0x0002) /* private access */
466 SET_TYPE_FIELD_PRIVATE (type
, i
);
468 if (accflags
& 0x0004) /* protected access */
470 SET_TYPE_FIELD_PROTECTED (type
, i
);
472 if (accflags
& 0x0008) /* ACC_STATIC */
473 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, i
), boffset
);
475 TYPE_FIELD_BITPOS (type
, i
) = 8 * boffset
;
476 if (accflags
& 0x8000) /* FIELD_UNRESOLVED_FLAG */
478 TYPE_FIELD_TYPE (type
, i
) = get_java_object_type (); /* FIXME */
484 temp
= value_struct_elt (&temp
, NULL
, "type", NULL
, "structure");
485 ftype
= type_from_class (temp
);
486 if (TYPE_CODE (ftype
) == TYPE_CODE_STRUCT
)
487 ftype
= lookup_pointer_type (ftype
);
488 TYPE_FIELD_TYPE (type
, i
) = ftype
;
493 nmethods
= value_as_long (value_struct_elt (&temp
, NULL
, "method_count",
495 TYPE_NFN_FIELDS_TOTAL (type
) = nmethods
;
496 j
= nmethods
* sizeof (struct fn_field
);
497 fn_fields
= (struct fn_field
*)
498 obstack_alloc (&dynamics_objfile
->symbol_obstack
, j
);
499 memset (fn_fields
, 0, j
);
500 fn_fieldlists
= (struct fn_fieldlist
*)
501 alloca (nmethods
* sizeof (struct fn_fieldlist
));
504 for (i
= 0; i
< nmethods
; i
++)
511 methods
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
512 method
= value_ind (methods
);
515 { /* Re-use method value for next method. */
516 VALUE_ADDRESS (method
) += TYPE_LENGTH (VALUE_TYPE (method
));
517 VALUE_LAZY (method
) = 1;
520 /* Get method name. */
522 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
523 mname
= get_java_utf8_name (&objfile
->type_obstack
, temp
);
524 if (strcmp (mname
, "<init>") == 0)
525 mname
= unqualified_name
;
527 /* Check for an existing method with the same name.
528 * This makes building the fn_fieldslists an O(nmethods**2)
529 * operation. That could be using hashing, but I doubt it
530 * is worth it. Note that we do maintain the order of methods
531 * in the inferior's Method table (as long as that is grouped
532 * by method name), which I think is desirable. --PB */
533 for (k
= 0, j
= TYPE_NFN_FIELDS (type
);;)
536 { /* No match - new method name. */
537 j
= TYPE_NFN_FIELDS (type
)++;
538 fn_fieldlists
[j
].name
= mname
;
539 fn_fieldlists
[j
].length
= 1;
540 fn_fieldlists
[j
].fn_fields
= &fn_fields
[i
];
544 if (strcmp (mname
, fn_fieldlists
[j
].name
) == 0)
545 { /* Found an existing method with the same name. */
547 if (mname
!= unqualified_name
)
548 obstack_free (&objfile
->type_obstack
, mname
);
549 mname
= fn_fieldlists
[j
].name
;
550 fn_fieldlists
[j
].length
++;
551 k
= i
- k
; /* Index of new slot. */
552 /* Shift intervening fn_fields (between k and i) down. */
553 for (l
= i
; l
> k
; l
--)
554 fn_fields
[l
] = fn_fields
[l
- 1];
555 for (l
= TYPE_NFN_FIELDS (type
); --l
> j
;)
556 fn_fieldlists
[l
].fn_fields
++;
559 k
+= fn_fieldlists
[j
].length
;
561 fn_fields
[k
].physname
= "";
562 fn_fields
[k
].is_stub
= 1;
563 fn_fields
[k
].type
= make_function_type (java_void_type
, NULL
); /* FIXME */
564 TYPE_CODE (fn_fields
[k
].type
) = TYPE_CODE_METHOD
;
567 j
= TYPE_NFN_FIELDS (type
) * sizeof (struct fn_fieldlist
);
568 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
569 obstack_alloc (&dynamics_objfile
->symbol_obstack
, j
);
570 memcpy (TYPE_FN_FIELDLISTS (type
), fn_fieldlists
, j
);
575 static struct type
*java_object_type
;
578 get_java_object_type (void)
580 if (java_object_type
== NULL
)
583 sym
= lookup_symbol ("java.lang.Object", NULL
, STRUCT_NAMESPACE
,
584 (int *) 0, (struct symtab
**) NULL
);
586 error ("cannot find java.lang.Object");
587 java_object_type
= SYMBOL_TYPE (sym
);
589 return java_object_type
;
593 get_java_object_header_size (void)
595 struct type
*objtype
= get_java_object_type ();
597 return (2 * TARGET_PTR_BIT
/ TARGET_CHAR_BIT
);
599 return TYPE_LENGTH (objtype
);
603 is_object_type (struct type
*type
)
605 CHECK_TYPEDEF (type
);
606 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
608 struct type
*ttype
= check_typedef (TYPE_TARGET_TYPE (type
));
610 if (TYPE_CODE (ttype
) != TYPE_CODE_STRUCT
)
612 while (TYPE_N_BASECLASSES (ttype
) > 0)
613 ttype
= TYPE_BASECLASS (ttype
, 0);
614 name
= TYPE_TAG_NAME (ttype
);
615 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
617 name
= TYPE_NFIELDS (ttype
) > 0 ? TYPE_FIELD_NAME (ttype
, 0) : (char *) 0;
618 if (name
!= NULL
&& strcmp (name
, "vtable") == 0)
620 if (java_object_type
== NULL
)
621 java_object_type
= type
;
629 java_primitive_type (int signature
)
634 return java_byte_type
;
636 return java_short_type
;
638 return java_int_type
;
640 return java_long_type
;
642 return java_boolean_type
;
644 return java_char_type
;
646 return java_float_type
;
648 return java_double_type
;
650 return java_void_type
;
652 error ("unknown signature '%c' for primitive type", (char) signature
);
655 /* If name[0 .. namelen-1] is the name of a primitive Java type,
656 return that type. Otherwise, return NULL. */
659 java_primitive_type_from_name (char *name
, int 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 (char *signature
)
707 for (; *signature
== '['; signature
++)
708 array
+= 2; /* Two chars for "[]". */
709 switch (signature
[0])
712 /* Subtract 2 for 'L' and ';'. */
713 return strlen (signature
) - 2 + array
;
715 return strlen (TYPE_NAME (java_primitive_type (signature
[0]))) + array
;
719 /* Demangle the Java type signature SIGNATURE, leaving the result in RESULT. */
722 java_demangled_signature_copy (char *result
, char *signature
)
727 while (*signature
== '[')
732 switch (signature
[0])
735 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
738 for (; *signature
!= ';' && *signature
!= '\0'; signature
++)
740 if (*signature
== '/')
747 ptr
= TYPE_NAME (java_primitive_type (signature
[0]));
749 strcpy (result
, ptr
);
760 /* Return the demangled name of the Java type signature string SIGNATURE,
761 as a freshly allocated copy. */
764 java_demangle_type_signature (char *signature
)
766 int length
= java_demangled_signature_length (signature
);
767 char *result
= xmalloc (length
+ 1);
768 java_demangled_signature_copy (result
, signature
);
769 result
[length
] = '\0';
774 java_lookup_type (char *signature
)
776 switch (signature
[0])
780 error ("java_lookup_type not fully implemented");
782 return java_primitive_type (signature
[0]);
786 /* Return the type of TYPE followed by DIMS pairs of [ ].
787 If DIMS == 0, TYPE is returned. */
790 java_array_type (struct type
*type
, int dims
)
792 struct type
*range_type
;
796 range_type
= create_range_type (NULL
, builtin_type_int
, 0, 0);
797 /* FIXME This is bogus! Java arrays are not gdb arrays! */
798 type
= create_array_type (NULL
, type
, range_type
);
804 /* Create a Java string in the inferior from a (Utf8) literal. */
806 static struct value
*
807 java_value_string (char *ptr
, int len
)
809 error ("not implemented - java_value_string"); /* FIXME */
812 /* Print the character C on STREAM as part of the contents of a literal
813 string whose delimiter is QUOTER. Note that that format for printing
814 characters and strings is language specific. */
817 java_emit_char (int c
, struct ui_file
*stream
, int quoter
)
823 fprintf_filtered (stream
, "\\%c", c
);
826 fputs_filtered ("\\b", stream
);
829 fputs_filtered ("\\t", stream
);
832 fputs_filtered ("\\n", stream
);
835 fputs_filtered ("\\f", stream
);
838 fputs_filtered ("\\r", stream
);
842 fputc_filtered (c
, stream
);
844 fprintf_filtered (stream
, "\\u%.4x", (unsigned int) c
);
849 static struct value
*
850 evaluate_subexp_java (struct type
*expect_type
, register struct expression
*exp
,
851 register int *pos
, enum noside noside
)
856 enum exp_opcode op
= exp
->elts
[*pos
].opcode
;
863 if (noside
== EVAL_SKIP
)
866 arg1
= evaluate_subexp_java (NULL_TYPE
, exp
, pos
, EVAL_NORMAL
);
867 if (is_object_type (VALUE_TYPE (arg1
)))
871 type
= type_from_class (java_class_from_object (arg1
));
872 arg1
= value_cast (lookup_pointer_type (type
), arg1
);
874 if (noside
== EVAL_SKIP
)
876 return value_ind (arg1
);
878 case BINOP_SUBSCRIPT
:
880 arg1
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
881 arg2
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
882 if (noside
== EVAL_SKIP
)
884 /* If the user attempts to subscript something that is not an
885 array or pointer type (like a plain int variable for example),
886 then report this as an error. */
889 type
= check_typedef (VALUE_TYPE (arg1
));
890 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
891 type
= check_typedef (TYPE_TARGET_TYPE (type
));
892 name
= TYPE_NAME (type
);
894 name
= TYPE_TAG_NAME (type
);
895 i
= name
== NULL
? 0 : strlen (name
);
896 if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
897 && i
> 2 && name
[i
- 1] == ']')
901 struct type
*el_type
;
904 struct value
*clas
= java_class_from_object (arg1
);
905 struct value
*temp
= clas
;
906 /* Get CLASS_ELEMENT_TYPE of the array type. */
907 temp
= value_struct_elt (&temp
, NULL
, "methods",
909 VALUE_TYPE (temp
) = VALUE_TYPE (clas
);
910 el_type
= type_from_class (temp
);
911 if (TYPE_CODE (el_type
) == TYPE_CODE_STRUCT
)
912 el_type
= lookup_pointer_type (el_type
);
914 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
915 return value_zero (el_type
, VALUE_LVAL (arg1
));
916 address
= value_as_address (arg1
);
917 address
+= JAVA_OBJECT_SIZE
;
918 read_memory (address
, buf4
, 4);
919 length
= (long) extract_signed_integer (buf4
, 4);
920 index
= (long) value_as_long (arg2
);
921 if (index
>= length
|| index
< 0)
922 error ("array index (%ld) out of bounds (length: %ld)",
924 address
= (address
+ 4) + index
* TYPE_LENGTH (el_type
);
925 return value_at (el_type
, address
, NULL
);
927 else if (TYPE_CODE (type
) == TYPE_CODE_ARRAY
)
929 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
930 return value_zero (TYPE_TARGET_TYPE (type
), VALUE_LVAL (arg1
));
932 return value_subscript (arg1
, arg2
);
935 error ("cannot subscript something of type `%s'", name
);
937 error ("cannot subscript requested type");
941 i
= longest_to_int (exp
->elts
[pc
+ 1].longconst
);
942 (*pos
) += 3 + BYTES_TO_EXP_ELEM (i
+ 1);
943 if (noside
== EVAL_SKIP
)
945 return java_value_string (&exp
->elts
[pc
+ 2].string
, i
);
947 case STRUCTOP_STRUCT
:
948 arg1
= evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
949 /* Convert object field (such as TYPE.class) to reference. */
950 if (TYPE_CODE (VALUE_TYPE (arg1
)) == TYPE_CODE_STRUCT
)
951 arg1
= value_addr (arg1
);
957 return evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
959 return value_from_longest (builtin_type_long
, (LONGEST
) 1);
963 java_create_fundamental_type (struct objfile
*objfile
, int typeid)
968 return java_void_type
;
970 return java_boolean_type
;
972 return java_char_type
;
974 return java_float_type
;
975 case FT_DBL_PREC_FLOAT
:
976 return java_double_type
;
979 return java_byte_type
;
981 case FT_SIGNED_SHORT
:
982 return java_short_type
;
984 case FT_SIGNED_INTEGER
:
985 return java_int_type
;
988 return java_long_type
;
990 return c_create_fundamental_type (objfile
, typeid);
993 /* Table mapping opcodes into strings for printing operators
994 and precedences of the operators. */
996 const struct op_print java_op_print_tab
[] =
998 {",", BINOP_COMMA
, PREC_COMMA
, 0},
999 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
1000 {"||", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
1001 {"&&", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
1002 {"|", BINOP_BITWISE_IOR
, PREC_BITWISE_IOR
, 0},
1003 {"^", BINOP_BITWISE_XOR
, PREC_BITWISE_XOR
, 0},
1004 {"&", BINOP_BITWISE_AND
, PREC_BITWISE_AND
, 0},
1005 {"==", BINOP_EQUAL
, PREC_EQUAL
, 0},
1006 {"!=", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
1007 {"<=", BINOP_LEQ
, PREC_ORDER
, 0},
1008 {">=", BINOP_GEQ
, PREC_ORDER
, 0},
1009 {">", BINOP_GTR
, PREC_ORDER
, 0},
1010 {"<", BINOP_LESS
, PREC_ORDER
, 0},
1011 {">>", BINOP_RSH
, PREC_SHIFT
, 0},
1012 {"<<", BINOP_LSH
, PREC_SHIFT
, 0},
1014 {">>>", BINOP_
? ? ?, PREC_SHIFT
, 0},
1016 {"+", BINOP_ADD
, PREC_ADD
, 0},
1017 {"-", BINOP_SUB
, PREC_ADD
, 0},
1018 {"*", BINOP_MUL
, PREC_MUL
, 0},
1019 {"/", BINOP_DIV
, PREC_MUL
, 0},
1020 {"%", BINOP_REM
, PREC_MUL
, 0},
1021 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
1022 {"!", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
1023 {"~", UNOP_COMPLEMENT
, PREC_PREFIX
, 0},
1024 {"*", UNOP_IND
, PREC_PREFIX
, 0},
1026 {"instanceof", ? ? ?, ? ? ?, 0},
1028 {"++", UNOP_PREINCREMENT
, PREC_PREFIX
, 0},
1029 {"--", UNOP_PREDECREMENT
, PREC_PREFIX
, 0},
1033 const struct language_defn java_language_defn
=
1035 "java", /* Language name */
1043 evaluate_subexp_java
,
1044 c_printchar
, /* Print a character constant */
1045 c_printstr
, /* Function to print string constant */
1046 java_emit_char
, /* Function to print a single character */
1047 java_create_fundamental_type
, /* Create fundamental type in this language */
1048 java_print_type
, /* Print a type using appropriate syntax */
1049 java_val_print
, /* Print a value using appropriate syntax */
1050 java_value_print
, /* Print a top-level value */
1051 {"", "", "", ""}, /* Binary format info */
1052 {"0%lo", "0", "o", ""}, /* Octal format info */
1053 {"%ld", "", "d", ""}, /* Decimal format info */
1054 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1055 java_op_print_tab
, /* expression operators for printing */
1056 0, /* not c-style arrays */
1057 0, /* String lower bound */
1058 &builtin_type_char
, /* Type of string elements */
1063 _initialize_java_language (void)
1066 java_int_type
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1067 java_short_type
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1068 java_long_type
= init_type (TYPE_CODE_INT
, 8, 0, "long", NULL
);
1069 java_byte_type
= init_type (TYPE_CODE_INT
, 1, 0, "byte", NULL
);
1070 java_boolean_type
= init_type (TYPE_CODE_BOOL
, 1, 0, "boolean", NULL
);
1071 java_char_type
= init_type (TYPE_CODE_CHAR
, 2, TYPE_FLAG_UNSIGNED
, "char", NULL
);
1072 java_float_type
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1073 java_double_type
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1074 java_void_type
= init_type (TYPE_CODE_VOID
, 1, 0, "void", NULL
);
1076 add_language (&java_language_defn
);
1079 /* Cleanup code that should be run on every "run".
1080 We should use make_run_cleanup to have this be called.
1081 But will that mess up values in value histry? FIXME */
1083 extern void java_rerun_cleanup (void);
1085 java_rerun_cleanup (void)
1087 if (class_symtab
!= NULL
)
1089 free_symtab (class_symtab
); /* ??? */
1090 class_symtab
= NULL
;
1092 if (dynamics_objfile
!= NULL
)
1094 free_objfile (dynamics_objfile
);
1095 dynamics_objfile
= NULL
;
1098 java_object_type
= NULL
;