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_HASHTABLE (bl
) = 0;
110 BLOCK_START (bl
) = 0;
112 BLOCK_FUNCTION (bl
) = NULL
;
113 BLOCK_SUPERBLOCK (bl
) = NULL
;
114 BLOCK_GCC_COMPILED (bl
) = 0;
115 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = bl
;
117 /* Allocate GLOBAL_BLOCK. This has to be relocatable. */
118 class_symtab_space
= 128;
119 bl
= xmmalloc (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
= xmrealloc (symtab
->objfile
->md
, bl
,
140 sizeof (struct block
)
141 + ((class_symtab_space
- 1) * sizeof (struct symbol
*)));
142 class_symtab
->free_ptr
= (char *) bl
;
143 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
146 BLOCK_SYM (bl
, BLOCK_NSYMS (bl
)) = sym
;
147 BLOCK_NSYMS (bl
) = BLOCK_NSYMS (bl
) + 1;
150 static struct symbol
*add_class_symbol (struct type
*type
, CORE_ADDR addr
);
152 static struct symbol
*
153 add_class_symbol (struct type
*type
, CORE_ADDR addr
)
156 sym
= (struct symbol
*)
157 obstack_alloc (&dynamics_objfile
->symbol_obstack
, sizeof (struct symbol
));
158 memset (sym
, 0, sizeof (struct symbol
));
159 SYMBOL_LANGUAGE (sym
) = language_java
;
160 SYMBOL_NAME (sym
) = TYPE_TAG_NAME (type
);
161 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
162 /* SYMBOL_VALUE (sym) = valu; */
163 SYMBOL_TYPE (sym
) = type
;
164 SYMBOL_NAMESPACE (sym
) = STRUCT_NAMESPACE
;
165 SYMBOL_VALUE_ADDRESS (sym
) = addr
;
171 java_lookup_class (char *name
)
174 sym
= lookup_symbol (name
, expression_context_block
, STRUCT_NAMESPACE
,
175 (int *) 0, (struct symtab
**) NULL
);
177 return SYMBOL_TYPE (sym
);
180 if (called from parser
)
182 call
lookup_class (or similar
) in inferior
;
186 addr
= found in inferior
;
191 type
= alloc_type (objfile
);
192 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
193 INIT_CPLUS_SPECIFIC (type
);
194 TYPE_TAG_NAME (type
) = obsavestring (name
, strlen (name
), &objfile
->type_obstack
);
195 TYPE_FLAGS (type
) |= TYPE_FLAG_STUB
;
199 /* FIXME - should search inferior's symbol table. */
204 /* Return a nul-terminated string (allocated on OBSTACK) for
205 a name given by NAME (which has type Utf8Const*). */
208 get_java_utf8_name (struct obstack
*obstack
, struct value
*name
)
211 struct value
*temp
= name
;
214 temp
= value_struct_elt (&temp
, NULL
, "length", NULL
, "structure");
215 name_length
= (int) value_as_long (temp
);
216 data_addr
= VALUE_ADDRESS (temp
) + VALUE_OFFSET (temp
)
217 + TYPE_LENGTH (VALUE_TYPE (temp
));
218 chrs
= obstack_alloc (obstack
, name_length
+ 1);
219 chrs
[name_length
] = '\0';
220 read_memory (data_addr
, chrs
, name_length
);
225 java_class_from_object (struct value
*obj_val
)
227 /* This is all rather inefficient, since the offsets of vtable and
228 class are fixed. FIXME */
229 struct value
*vtable_val
;
231 if (TYPE_CODE (VALUE_TYPE (obj_val
)) == TYPE_CODE_PTR
232 && TYPE_LENGTH (TYPE_TARGET_TYPE (VALUE_TYPE (obj_val
))) == 0)
233 obj_val
= value_at (get_java_object_type (),
234 value_as_address (obj_val
), NULL
);
236 vtable_val
= value_struct_elt (&obj_val
, NULL
, "vtable", NULL
, "structure");
237 return value_struct_elt (&vtable_val
, NULL
, "class", NULL
, "structure");
240 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
242 java_class_is_primitive (struct value
*clas
)
244 struct value
*vtable
= value_struct_elt (&clas
, NULL
, "vtable", NULL
, "struct");
245 CORE_ADDR i
= value_as_address (vtable
);
246 return (int) (i
& 0x7fffffff) == (int) 0x7fffffff;
249 /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
252 type_from_class (struct value
*clas
)
257 struct objfile
*objfile
;
258 struct value
*utf8_name
;
265 type
= check_typedef (VALUE_TYPE (clas
));
266 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
268 if (value_logical_not (clas
))
270 clas
= value_ind (clas
);
272 addr
= VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
);
275 get_java_class_symtab ();
276 bl
= BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab
), GLOBAL_BLOCK
);
277 for (i
= BLOCK_NSYMS (bl
); --i
>= 0;)
279 struct symbol
*sym
= BLOCK_SYM (bl
, i
);
280 if (SYMBOL_VALUE_ADDRESS (sym
) == addr
)
281 return SYMBOL_TYPE (sym
);
285 objfile
= get_dynamics_objfile ();
286 if (java_class_is_primitive (clas
))
290 sig
= value_struct_elt (&temp
, NULL
, "method_count", NULL
, "structure");
291 return java_primitive_type (value_as_long (sig
));
294 /* Get Class name. */
295 /* if clasloader non-null, prepend loader address. FIXME */
297 utf8_name
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
298 name
= get_java_utf8_name (&objfile
->type_obstack
, utf8_name
);
299 for (nptr
= name
; *nptr
!= 0; nptr
++)
305 type
= java_lookup_class (name
);
309 type
= alloc_type (objfile
);
310 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
311 INIT_CPLUS_SPECIFIC (type
);
315 char *signature
= name
;
316 int namelen
= java_demangled_signature_length (signature
);
317 if (namelen
> strlen (name
))
318 name
= obstack_alloc (&objfile
->type_obstack
, namelen
+ 1);
319 java_demangled_signature_copy (name
, signature
);
320 name
[namelen
] = '\0';
323 /* Set array element type. */
324 temp
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
325 VALUE_TYPE (temp
) = lookup_pointer_type (VALUE_TYPE (clas
));
326 TYPE_TARGET_TYPE (type
) = type_from_class (temp
);
329 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
330 TYPE_TAG_NAME (type
) = name
;
332 add_class_symtab_symbol (add_class_symbol (type
, addr
));
333 return java_link_class_type (type
, clas
);
336 /* Fill in class TYPE with data from the CLAS value. */
339 java_link_class_type (struct type
*type
, struct value
*clas
)
342 char *unqualified_name
;
343 char *name
= TYPE_TAG_NAME (type
);
344 int ninterfaces
, nfields
, nmethods
;
345 int type_is_object
= 0;
346 struct fn_field
*fn_fields
;
347 struct fn_fieldlist
*fn_fieldlists
;
348 struct value
*fields
;
349 struct value
*methods
;
350 struct value
*method
= NULL
;
351 struct value
*field
= NULL
;
353 struct objfile
*objfile
= get_dynamics_objfile ();
356 unqualified_name
= strrchr (name
, '.');
357 if (unqualified_name
== NULL
)
358 unqualified_name
= name
;
361 temp
= value_struct_elt (&temp
, NULL
, "superclass", NULL
, "structure");
362 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
364 tsuper
= get_java_object_type ();
365 if (tsuper
&& TYPE_CODE (tsuper
) == TYPE_CODE_PTR
)
366 tsuper
= TYPE_TARGET_TYPE (tsuper
);
370 tsuper
= type_from_class (temp
);
376 ninterfaces
= value_as_long (value_struct_elt (&temp
, NULL
, "interface_len", NULL
, "structure"));
378 TYPE_N_BASECLASSES (type
) = (tsuper
== NULL
? 0 : 1) + ninterfaces
;
380 nfields
= value_as_long (value_struct_elt (&temp
, NULL
, "field_count", NULL
, "structure"));
381 nfields
+= TYPE_N_BASECLASSES (type
);
382 nfields
++; /* Add one for dummy "class" field. */
383 TYPE_NFIELDS (type
) = nfields
;
384 TYPE_FIELDS (type
) = (struct field
*)
385 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
387 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
389 TYPE_FIELD_PRIVATE_BITS (type
) =
390 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
391 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
393 TYPE_FIELD_PROTECTED_BITS (type
) =
394 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
395 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
397 TYPE_FIELD_IGNORE_BITS (type
) =
398 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
399 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
401 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
402 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
403 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
407 TYPE_BASECLASS (type
, 0) = tsuper
;
409 SET_TYPE_FIELD_PRIVATE (type
, 0);
413 if (i
> 2 && name
[i
- 1] == ']' && tsuper
!= NULL
)
416 TYPE_LENGTH (type
) = TYPE_LENGTH (tsuper
) + 4; /* size with "length" */
421 temp
= value_struct_elt (&temp
, NULL
, "size_in_bytes", NULL
, "structure");
422 TYPE_LENGTH (type
) = value_as_long (temp
);
426 nfields
--; /* First set up dummy "class" field. */
427 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, nfields
),
428 VALUE_ADDRESS (clas
) + VALUE_OFFSET (clas
));
429 TYPE_FIELD_NAME (type
, nfields
) = "class";
430 TYPE_FIELD_TYPE (type
, nfields
) = VALUE_TYPE (clas
);
431 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
433 for (i
= TYPE_N_BASECLASSES (type
); i
< nfields
; i
++)
440 fields
= value_struct_elt (&temp
, NULL
, "fields", NULL
, "structure");
441 field
= value_ind (fields
);
444 { /* Re-use field value for next field. */
445 VALUE_ADDRESS (field
) += TYPE_LENGTH (VALUE_TYPE (field
));
446 VALUE_LAZY (field
) = 1;
449 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
450 TYPE_FIELD_NAME (type
, i
) =
451 get_java_utf8_name (&objfile
->type_obstack
, temp
);
453 accflags
= value_as_long (value_struct_elt (&temp
, NULL
, "accflags",
456 temp
= value_struct_elt (&temp
, NULL
, "info", NULL
, "structure");
457 boffset
= value_as_long (value_struct_elt (&temp
, NULL
, "boffset",
459 if (accflags
& 0x0001) /* public access */
463 if (accflags
& 0x0002) /* private access */
465 SET_TYPE_FIELD_PRIVATE (type
, i
);
467 if (accflags
& 0x0004) /* protected access */
469 SET_TYPE_FIELD_PROTECTED (type
, i
);
471 if (accflags
& 0x0008) /* ACC_STATIC */
472 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, i
), boffset
);
474 TYPE_FIELD_BITPOS (type
, i
) = 8 * boffset
;
475 if (accflags
& 0x8000) /* FIELD_UNRESOLVED_FLAG */
477 TYPE_FIELD_TYPE (type
, i
) = get_java_object_type (); /* FIXME */
483 temp
= value_struct_elt (&temp
, NULL
, "type", NULL
, "structure");
484 ftype
= type_from_class (temp
);
485 if (TYPE_CODE (ftype
) == TYPE_CODE_STRUCT
)
486 ftype
= lookup_pointer_type (ftype
);
487 TYPE_FIELD_TYPE (type
, i
) = ftype
;
492 nmethods
= value_as_long (value_struct_elt (&temp
, NULL
, "method_count",
494 TYPE_NFN_FIELDS_TOTAL (type
) = nmethods
;
495 j
= nmethods
* sizeof (struct fn_field
);
496 fn_fields
= (struct fn_field
*)
497 obstack_alloc (&dynamics_objfile
->symbol_obstack
, j
);
498 memset (fn_fields
, 0, j
);
499 fn_fieldlists
= (struct fn_fieldlist
*)
500 alloca (nmethods
* sizeof (struct fn_fieldlist
));
503 for (i
= 0; i
< nmethods
; i
++)
510 methods
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
511 method
= value_ind (methods
);
514 { /* Re-use method value for next method. */
515 VALUE_ADDRESS (method
) += TYPE_LENGTH (VALUE_TYPE (method
));
516 VALUE_LAZY (method
) = 1;
519 /* Get method name. */
521 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
522 mname
= get_java_utf8_name (&objfile
->type_obstack
, temp
);
523 if (strcmp (mname
, "<init>") == 0)
524 mname
= unqualified_name
;
526 /* Check for an existing method with the same name.
527 * This makes building the fn_fieldslists an O(nmethods**2)
528 * operation. That could be using hashing, but I doubt it
529 * is worth it. Note that we do maintain the order of methods
530 * in the inferior's Method table (as long as that is grouped
531 * by method name), which I think is desirable. --PB */
532 for (k
= 0, j
= TYPE_NFN_FIELDS (type
);;)
535 { /* No match - new method name. */
536 j
= TYPE_NFN_FIELDS (type
)++;
537 fn_fieldlists
[j
].name
= mname
;
538 fn_fieldlists
[j
].length
= 1;
539 fn_fieldlists
[j
].fn_fields
= &fn_fields
[i
];
543 if (strcmp (mname
, fn_fieldlists
[j
].name
) == 0)
544 { /* Found an existing method with the same name. */
546 if (mname
!= unqualified_name
)
547 obstack_free (&objfile
->type_obstack
, mname
);
548 mname
= fn_fieldlists
[j
].name
;
549 fn_fieldlists
[j
].length
++;
550 k
= i
- k
; /* Index of new slot. */
551 /* Shift intervening fn_fields (between k and i) down. */
552 for (l
= i
; l
> k
; l
--)
553 fn_fields
[l
] = fn_fields
[l
- 1];
554 for (l
= TYPE_NFN_FIELDS (type
); --l
> j
;)
555 fn_fieldlists
[l
].fn_fields
++;
558 k
+= fn_fieldlists
[j
].length
;
560 fn_fields
[k
].physname
= "";
561 fn_fields
[k
].is_stub
= 1;
562 fn_fields
[k
].type
= make_function_type (java_void_type
, NULL
); /* FIXME */
563 TYPE_CODE (fn_fields
[k
].type
) = TYPE_CODE_METHOD
;
566 j
= TYPE_NFN_FIELDS (type
) * sizeof (struct fn_fieldlist
);
567 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
568 obstack_alloc (&dynamics_objfile
->symbol_obstack
, j
);
569 memcpy (TYPE_FN_FIELDLISTS (type
), fn_fieldlists
, j
);
574 static struct type
*java_object_type
;
577 get_java_object_type (void)
579 if (java_object_type
== NULL
)
582 sym
= lookup_symbol ("java.lang.Object", NULL
, STRUCT_NAMESPACE
,
583 (int *) 0, (struct symtab
**) NULL
);
585 error ("cannot find java.lang.Object");
586 java_object_type
= SYMBOL_TYPE (sym
);
588 return java_object_type
;
592 get_java_object_header_size (void)
594 struct type
*objtype
= get_java_object_type ();
596 return (2 * TARGET_PTR_BIT
/ TARGET_CHAR_BIT
);
598 return TYPE_LENGTH (objtype
);
602 is_object_type (struct type
*type
)
604 CHECK_TYPEDEF (type
);
605 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
607 struct type
*ttype
= check_typedef (TYPE_TARGET_TYPE (type
));
609 if (TYPE_CODE (ttype
) != TYPE_CODE_STRUCT
)
611 while (TYPE_N_BASECLASSES (ttype
) > 0)
612 ttype
= TYPE_BASECLASS (ttype
, 0);
613 name
= TYPE_TAG_NAME (ttype
);
614 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
616 name
= TYPE_NFIELDS (ttype
) > 0 ? TYPE_FIELD_NAME (ttype
, 0) : (char *) 0;
617 if (name
!= NULL
&& strcmp (name
, "vtable") == 0)
619 if (java_object_type
== NULL
)
620 java_object_type
= type
;
628 java_primitive_type (int signature
)
633 return java_byte_type
;
635 return java_short_type
;
637 return java_int_type
;
639 return java_long_type
;
641 return java_boolean_type
;
643 return java_char_type
;
645 return java_float_type
;
647 return java_double_type
;
649 return java_void_type
;
651 error ("unknown signature '%c' for primitive type", (char) signature
);
654 /* If name[0 .. namelen-1] is the name of a primitive Java type,
655 return that type. Otherwise, return NULL. */
658 java_primitive_type_from_name (char *name
, int namelen
)
663 if (namelen
== 4 && memcmp (name
, "byte", 4) == 0)
664 return java_byte_type
;
665 if (namelen
== 7 && memcmp (name
, "boolean", 7) == 0)
666 return java_boolean_type
;
669 if (namelen
== 4 && memcmp (name
, "char", 4) == 0)
670 return java_char_type
;
672 if (namelen
== 6 && memcmp (name
, "double", 6) == 0)
673 return java_double_type
;
676 if (namelen
== 5 && memcmp (name
, "float", 5) == 0)
677 return java_float_type
;
680 if (namelen
== 3 && memcmp (name
, "int", 3) == 0)
681 return java_int_type
;
684 if (namelen
== 4 && memcmp (name
, "long", 4) == 0)
685 return java_long_type
;
688 if (namelen
== 5 && memcmp (name
, "short", 5) == 0)
689 return java_short_type
;
692 if (namelen
== 4 && memcmp (name
, "void", 4) == 0)
693 return java_void_type
;
699 /* Return the length (in bytes) of demangled name of the Java type
700 signature string SIGNATURE. */
703 java_demangled_signature_length (char *signature
)
706 for (; *signature
== '['; signature
++)
707 array
+= 2; /* Two chars for "[]". */
708 switch (signature
[0])
711 /* Subtract 2 for 'L' and ';'. */
712 return strlen (signature
) - 2 + array
;
714 return strlen (TYPE_NAME (java_primitive_type (signature
[0]))) + array
;
718 /* Demangle the Java type signature SIGNATURE, leaving the result in RESULT. */
721 java_demangled_signature_copy (char *result
, char *signature
)
726 while (*signature
== '[')
731 switch (signature
[0])
734 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
737 for (; *signature
!= ';' && *signature
!= '\0'; signature
++)
739 if (*signature
== '/')
746 ptr
= TYPE_NAME (java_primitive_type (signature
[0]));
748 strcpy (result
, ptr
);
759 /* Return the demangled name of the Java type signature string SIGNATURE,
760 as a freshly allocated copy. */
763 java_demangle_type_signature (char *signature
)
765 int length
= java_demangled_signature_length (signature
);
766 char *result
= xmalloc (length
+ 1);
767 java_demangled_signature_copy (result
, signature
);
768 result
[length
] = '\0';
773 java_lookup_type (char *signature
)
775 switch (signature
[0])
779 error ("java_lookup_type not fully implemented");
781 return java_primitive_type (signature
[0]);
785 /* Return the type of TYPE followed by DIMS pairs of [ ].
786 If DIMS == 0, TYPE is returned. */
789 java_array_type (struct type
*type
, int dims
)
791 struct type
*range_type
;
795 range_type
= create_range_type (NULL
, builtin_type_int
, 0, 0);
796 /* FIXME This is bogus! Java arrays are not gdb arrays! */
797 type
= create_array_type (NULL
, type
, range_type
);
803 /* Create a Java string in the inferior from a (Utf8) literal. */
805 static struct value
*
806 java_value_string (char *ptr
, int len
)
808 error ("not implemented - java_value_string"); /* FIXME */
811 /* Print the character C on STREAM as part of the contents of a literal
812 string whose delimiter is QUOTER. Note that that format for printing
813 characters and strings is language specific. */
816 java_emit_char (int c
, struct ui_file
*stream
, int quoter
)
822 fprintf_filtered (stream
, "\\%c", c
);
825 fputs_filtered ("\\b", stream
);
828 fputs_filtered ("\\t", stream
);
831 fputs_filtered ("\\n", stream
);
834 fputs_filtered ("\\f", stream
);
837 fputs_filtered ("\\r", stream
);
841 fputc_filtered (c
, stream
);
843 fprintf_filtered (stream
, "\\u%.4x", (unsigned int) c
);
848 static struct value
*
849 evaluate_subexp_java (struct type
*expect_type
, register struct expression
*exp
,
850 register int *pos
, enum noside noside
)
855 enum exp_opcode op
= exp
->elts
[*pos
].opcode
;
862 if (noside
== EVAL_SKIP
)
865 arg1
= evaluate_subexp_java (NULL_TYPE
, exp
, pos
, EVAL_NORMAL
);
866 if (is_object_type (VALUE_TYPE (arg1
)))
870 type
= type_from_class (java_class_from_object (arg1
));
871 arg1
= value_cast (lookup_pointer_type (type
), arg1
);
873 if (noside
== EVAL_SKIP
)
875 return value_ind (arg1
);
877 case BINOP_SUBSCRIPT
:
879 arg1
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
880 arg2
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
881 if (noside
== EVAL_SKIP
)
883 /* If the user attempts to subscript something that is not an
884 array or pointer type (like a plain int variable for example),
885 then report this as an error. */
888 type
= check_typedef (VALUE_TYPE (arg1
));
889 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
890 type
= check_typedef (TYPE_TARGET_TYPE (type
));
891 name
= TYPE_NAME (type
);
893 name
= TYPE_TAG_NAME (type
);
894 i
= name
== NULL
? 0 : strlen (name
);
895 if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
896 && i
> 2 && name
[i
- 1] == ']')
900 struct type
*el_type
;
903 struct value
*clas
= java_class_from_object (arg1
);
904 struct value
*temp
= clas
;
905 /* Get CLASS_ELEMENT_TYPE of the array type. */
906 temp
= value_struct_elt (&temp
, NULL
, "methods",
908 VALUE_TYPE (temp
) = VALUE_TYPE (clas
);
909 el_type
= type_from_class (temp
);
910 if (TYPE_CODE (el_type
) == TYPE_CODE_STRUCT
)
911 el_type
= lookup_pointer_type (el_type
);
913 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
914 return value_zero (el_type
, VALUE_LVAL (arg1
));
915 address
= value_as_address (arg1
);
916 address
+= JAVA_OBJECT_SIZE
;
917 read_memory (address
, buf4
, 4);
918 length
= (long) extract_signed_integer (buf4
, 4);
919 index
= (long) value_as_long (arg2
);
920 if (index
>= length
|| index
< 0)
921 error ("array index (%ld) out of bounds (length: %ld)",
923 address
= (address
+ 4) + index
* TYPE_LENGTH (el_type
);
924 return value_at (el_type
, address
, NULL
);
926 else if (TYPE_CODE (type
) == TYPE_CODE_ARRAY
)
928 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
929 return value_zero (TYPE_TARGET_TYPE (type
), VALUE_LVAL (arg1
));
931 return value_subscript (arg1
, arg2
);
934 error ("cannot subscript something of type `%s'", name
);
936 error ("cannot subscript requested type");
940 i
= longest_to_int (exp
->elts
[pc
+ 1].longconst
);
941 (*pos
) += 3 + BYTES_TO_EXP_ELEM (i
+ 1);
942 if (noside
== EVAL_SKIP
)
944 return java_value_string (&exp
->elts
[pc
+ 2].string
, i
);
946 case STRUCTOP_STRUCT
:
947 arg1
= evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
948 /* Convert object field (such as TYPE.class) to reference. */
949 if (TYPE_CODE (VALUE_TYPE (arg1
)) == TYPE_CODE_STRUCT
)
950 arg1
= value_addr (arg1
);
956 return evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
958 return value_from_longest (builtin_type_long
, (LONGEST
) 1);
962 java_create_fundamental_type (struct objfile
*objfile
, int typeid)
967 return java_void_type
;
969 return java_boolean_type
;
971 return java_char_type
;
973 return java_float_type
;
974 case FT_DBL_PREC_FLOAT
:
975 return java_double_type
;
978 return java_byte_type
;
980 case FT_SIGNED_SHORT
:
981 return java_short_type
;
983 case FT_SIGNED_INTEGER
:
984 return java_int_type
;
987 return java_long_type
;
989 return c_create_fundamental_type (objfile
, typeid);
992 /* Table mapping opcodes into strings for printing operators
993 and precedences of the operators. */
995 const struct op_print java_op_print_tab
[] =
997 {",", BINOP_COMMA
, PREC_COMMA
, 0},
998 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
999 {"||", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
1000 {"&&", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
1001 {"|", BINOP_BITWISE_IOR
, PREC_BITWISE_IOR
, 0},
1002 {"^", BINOP_BITWISE_XOR
, PREC_BITWISE_XOR
, 0},
1003 {"&", BINOP_BITWISE_AND
, PREC_BITWISE_AND
, 0},
1004 {"==", BINOP_EQUAL
, PREC_EQUAL
, 0},
1005 {"!=", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
1006 {"<=", BINOP_LEQ
, PREC_ORDER
, 0},
1007 {">=", BINOP_GEQ
, PREC_ORDER
, 0},
1008 {">", BINOP_GTR
, PREC_ORDER
, 0},
1009 {"<", BINOP_LESS
, PREC_ORDER
, 0},
1010 {">>", BINOP_RSH
, PREC_SHIFT
, 0},
1011 {"<<", BINOP_LSH
, PREC_SHIFT
, 0},
1013 {">>>", BINOP_
? ? ?, PREC_SHIFT
, 0},
1015 {"+", BINOP_ADD
, PREC_ADD
, 0},
1016 {"-", BINOP_SUB
, PREC_ADD
, 0},
1017 {"*", BINOP_MUL
, PREC_MUL
, 0},
1018 {"/", BINOP_DIV
, PREC_MUL
, 0},
1019 {"%", BINOP_REM
, PREC_MUL
, 0},
1020 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
1021 {"!", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
1022 {"~", UNOP_COMPLEMENT
, PREC_PREFIX
, 0},
1023 {"*", UNOP_IND
, PREC_PREFIX
, 0},
1025 {"instanceof", ? ? ?, ? ? ?, 0},
1027 {"++", UNOP_PREINCREMENT
, PREC_PREFIX
, 0},
1028 {"--", UNOP_PREDECREMENT
, PREC_PREFIX
, 0},
1032 const struct language_defn java_language_defn
=
1034 "java", /* Language name */
1042 evaluate_subexp_java
,
1043 c_printchar
, /* Print a character constant */
1044 c_printstr
, /* Function to print string constant */
1045 java_emit_char
, /* Function to print a single character */
1046 java_create_fundamental_type
, /* Create fundamental type in this language */
1047 java_print_type
, /* Print a type using appropriate syntax */
1048 java_val_print
, /* Print a value using appropriate syntax */
1049 java_value_print
, /* Print a top-level value */
1050 {"", "", "", ""}, /* Binary format info */
1051 {"0%lo", "0", "o", ""}, /* Octal format info */
1052 {"%ld", "", "d", ""}, /* Decimal format info */
1053 {"0x%lx", "0x", "x", ""}, /* Hex format info */
1054 java_op_print_tab
, /* expression operators for printing */
1055 0, /* not c-style arrays */
1056 0, /* String lower bound */
1057 &builtin_type_char
, /* Type of string elements */
1062 _initialize_java_language (void)
1065 java_int_type
= init_type (TYPE_CODE_INT
, 4, 0, "int", NULL
);
1066 java_short_type
= init_type (TYPE_CODE_INT
, 2, 0, "short", NULL
);
1067 java_long_type
= init_type (TYPE_CODE_INT
, 8, 0, "long", NULL
);
1068 java_byte_type
= init_type (TYPE_CODE_INT
, 1, 0, "byte", NULL
);
1069 java_boolean_type
= init_type (TYPE_CODE_BOOL
, 1, 0, "boolean", NULL
);
1070 java_char_type
= init_type (TYPE_CODE_CHAR
, 2, TYPE_FLAG_UNSIGNED
, "char", NULL
);
1071 java_float_type
= init_type (TYPE_CODE_FLT
, 4, 0, "float", NULL
);
1072 java_double_type
= init_type (TYPE_CODE_FLT
, 8, 0, "double", NULL
);
1073 java_void_type
= init_type (TYPE_CODE_VOID
, 1, 0, "void", NULL
);
1075 add_language (&java_language_defn
);
1078 /* Cleanup code that should be run on every "run".
1079 We should use make_run_cleanup to have this be called.
1080 But will that mess up values in value histry? FIXME */
1082 extern void java_rerun_cleanup (void);
1084 java_rerun_cleanup (void)
1086 if (class_symtab
!= NULL
)
1088 free_symtab (class_symtab
); /* ??? */
1089 class_symtab
= NULL
;
1091 if (dynamics_objfile
!= NULL
)
1093 free_objfile (dynamics_objfile
);
1094 dynamics_objfile
= NULL
;
1097 java_object_type
= NULL
;