1 /* Java language support routines for GDB, the GNU debugger.
3 Copyright (C) 1997-2014 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #include "expression.h"
24 #include "parser-defs.h"
35 #include "dictionary.h"
39 #include "cp-support.h"
43 extern void _initialize_java_language (void);
45 static int java_demangled_signature_length (const char *);
46 static void java_demangled_signature_copy (char *, const char *);
48 static struct symtab
*get_java_class_symtab (struct gdbarch
*gdbarch
);
49 static char *get_java_utf8_name (struct obstack
*obstack
, struct value
*name
);
50 static int java_class_is_primitive (struct value
*clas
);
51 static struct value
*java_value_string (char *ptr
, int len
);
53 static void java_emit_char (int c
, struct type
*type
,
54 struct ui_file
* stream
, int quoter
);
56 static char *java_class_name_from_physname (const char *physname
);
58 static const struct objfile_data
*jv_dynamics_objfile_data_key
;
60 /* The dynamic objfile is kept per-program-space. This key lets us
61 associate the objfile with the program space. */
63 static const struct program_space_data
*jv_dynamics_progspace_key
;
65 static struct type
*java_link_class_type (struct gdbarch
*,
66 struct type
*, struct value
*);
68 /* An instance of this structure is used to store some data that must
71 struct jv_per_objfile_data
73 /* The expandable dictionary we use. */
74 struct dictionary
*dict
;
77 /* A function called when the dynamics_objfile is freed. We use this
78 to clean up some internal state. */
80 jv_per_objfile_free (struct objfile
*objfile
, void *data
)
82 struct jv_per_objfile_data
*jv_data
= data
;
83 struct objfile
*dynamics_objfile
;
85 dynamics_objfile
= program_space_data (current_program_space
,
86 jv_dynamics_progspace_key
);
87 gdb_assert (objfile
== dynamics_objfile
);
90 dict_free (jv_data
->dict
);
93 set_program_space_data (current_program_space
,
94 jv_dynamics_progspace_key
,
98 /* FIXME: carlton/2003-02-04: This is the main or only caller of
99 allocate_objfile with first argument NULL; as a result, this code
100 breaks every so often. Somebody should write a test case that
101 exercises GDB in various ways (e.g. something involving loading a
102 dynamic library) after this code has been called. */
104 static struct objfile
*
105 get_dynamics_objfile (struct gdbarch
*gdbarch
)
107 struct objfile
*dynamics_objfile
;
109 dynamics_objfile
= program_space_data (current_program_space
,
110 jv_dynamics_progspace_key
);
112 if (dynamics_objfile
== NULL
)
114 struct jv_per_objfile_data
*data
;
116 /* Mark it as shared so that it is cleared when the inferior is
118 dynamics_objfile
= allocate_objfile (NULL
, NULL
,
119 OBJF_SHARED
| OBJF_NOT_FILENAME
);
120 dynamics_objfile
->per_bfd
->gdbarch
= gdbarch
;
122 data
= XCNEW (struct jv_per_objfile_data
);
123 set_objfile_data (dynamics_objfile
, jv_dynamics_objfile_data_key
, data
);
125 set_program_space_data (current_program_space
,
126 jv_dynamics_progspace_key
,
129 return dynamics_objfile
;
132 static struct symtab
*
133 get_java_class_symtab (struct gdbarch
*gdbarch
)
135 struct objfile
*objfile
= get_dynamics_objfile (gdbarch
);
136 struct symtab
*class_symtab
= objfile
->symtabs
;
138 if (class_symtab
== NULL
)
140 struct blockvector
*bv
;
142 struct jv_per_objfile_data
*jv_data
;
144 class_symtab
= allocate_symtab ("<java-classes>", objfile
);
145 class_symtab
->language
= language_java
;
146 bv
= (struct blockvector
*)
147 obstack_alloc (&objfile
->objfile_obstack
,
148 sizeof (struct blockvector
) + sizeof (struct block
*));
149 BLOCKVECTOR_NBLOCKS (bv
) = 1;
150 BLOCKVECTOR (class_symtab
) = bv
;
152 /* Allocate dummy STATIC_BLOCK. */
153 bl
= allocate_block (&objfile
->objfile_obstack
);
154 BLOCK_DICT (bl
) = dict_create_linear (&objfile
->objfile_obstack
,
156 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = bl
;
158 /* Allocate GLOBAL_BLOCK. */
159 bl
= allocate_global_block (&objfile
->objfile_obstack
);
160 BLOCK_DICT (bl
) = dict_create_hashed_expandable ();
161 set_block_symtab (bl
, class_symtab
);
162 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
164 /* Arrange to free the dict. */
165 jv_data
= objfile_data (objfile
, jv_dynamics_objfile_data_key
);
166 jv_data
->dict
= BLOCK_DICT (bl
);
172 add_class_symtab_symbol (struct symbol
*sym
)
174 struct symtab
*symtab
175 = get_java_class_symtab (get_objfile_arch (SYMBOL_SYMTAB (sym
)->objfile
));
176 const struct blockvector
*bv
= BLOCKVECTOR (symtab
);
178 dict_add_symbol (BLOCK_DICT (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)), sym
);
181 static struct symbol
*
182 add_class_symbol (struct type
*type
, CORE_ADDR addr
)
185 struct objfile
*objfile
= get_dynamics_objfile (get_type_arch (type
));
187 sym
= allocate_symbol (objfile
);
188 SYMBOL_SET_LANGUAGE (sym
, language_java
, &objfile
->objfile_obstack
);
189 SYMBOL_SET_LINKAGE_NAME (sym
, TYPE_TAG_NAME (type
));
190 SYMBOL_ACLASS_INDEX (sym
) = LOC_TYPEDEF
;
191 /* SYMBOL_VALUE (sym) = valu; */
192 SYMBOL_TYPE (sym
) = type
;
193 SYMBOL_DOMAIN (sym
) = STRUCT_DOMAIN
;
194 SYMBOL_VALUE_ADDRESS (sym
) = addr
;
199 java_lookup_class (char *name
)
203 sym
= lookup_symbol (name
, expression_context_block
, STRUCT_DOMAIN
, NULL
);
205 return SYMBOL_TYPE (sym
);
206 /* FIXME - should search inferior's symbol table. */
210 /* Return a nul-terminated string (allocated on OBSTACK) for
211 a name given by NAME (which has type Utf8Const*). */
214 get_java_utf8_name (struct obstack
*obstack
, struct value
*name
)
217 struct value
*temp
= name
;
221 temp
= value_struct_elt (&temp
, NULL
, "length", NULL
, "structure");
222 name_length
= (int) value_as_long (temp
);
223 data_addr
= value_address (temp
) + TYPE_LENGTH (value_type (temp
));
224 chrs
= obstack_alloc (obstack
, name_length
+ 1);
225 chrs
[name_length
] = '\0';
226 read_memory (data_addr
, (gdb_byte
*) chrs
, name_length
);
231 java_class_from_object (struct value
*obj_val
)
233 /* This is all rather inefficient, since the offsets of vtable and
234 class are fixed. FIXME */
235 struct value
*vtable_val
;
237 if (TYPE_CODE (value_type (obj_val
)) == TYPE_CODE_PTR
238 && TYPE_LENGTH (TYPE_TARGET_TYPE (value_type (obj_val
))) == 0)
239 obj_val
= value_at (get_java_object_type (),
240 value_as_address (obj_val
));
242 vtable_val
= value_struct_elt (&obj_val
, NULL
, "vtable", NULL
, "structure");
243 return value_struct_elt (&vtable_val
, NULL
, "class", NULL
, "structure");
246 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
248 java_class_is_primitive (struct value
*clas
)
250 struct value
*vtable
= value_struct_elt (&clas
, NULL
, "vtable",
252 CORE_ADDR i
= value_as_address (vtable
);
254 return (int) (i
& 0x7fffffff) == (int) 0x7fffffff;
257 /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
260 type_from_class (struct gdbarch
*gdbarch
, struct value
*clas
)
265 struct objfile
*objfile
;
266 struct value
*utf8_name
;
270 type
= check_typedef (value_type (clas
));
271 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
273 if (value_logical_not (clas
))
275 clas
= value_ind (clas
);
277 addr
= value_address (clas
);
279 objfile
= get_dynamics_objfile (gdbarch
);
280 if (java_class_is_primitive (clas
))
285 sig
= value_struct_elt (&temp
, NULL
, "method_count", NULL
, "structure");
286 return java_primitive_type (gdbarch
, value_as_long (sig
));
289 /* Get Class name. */
290 /* If clasloader non-null, prepend loader address. FIXME */
292 utf8_name
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
293 name
= get_java_utf8_name (&objfile
->objfile_obstack
, utf8_name
);
294 for (nptr
= name
; *nptr
!= 0; nptr
++)
300 type
= java_lookup_class (name
);
304 type
= alloc_type (objfile
);
305 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
306 INIT_CPLUS_SPECIFIC (type
);
310 char *signature
= name
;
311 int namelen
= java_demangled_signature_length (signature
);
313 if (namelen
> strlen (name
))
314 name
= obstack_alloc (&objfile
->objfile_obstack
, namelen
+ 1);
315 java_demangled_signature_copy (name
, signature
);
316 name
[namelen
] = '\0';
318 /* Set array element type. */
319 temp
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
320 deprecated_set_value_type (temp
,
321 lookup_pointer_type (value_type (clas
)));
322 TYPE_TARGET_TYPE (type
) = type_from_class (gdbarch
, temp
);
325 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
326 TYPE_TAG_NAME (type
) = name
;
328 add_class_symtab_symbol (add_class_symbol (type
, addr
));
329 return java_link_class_type (gdbarch
, type
, clas
);
332 /* Fill in class TYPE with data from the CLAS value. */
335 java_link_class_type (struct gdbarch
*gdbarch
,
336 struct type
*type
, struct value
*clas
)
339 const char *unqualified_name
;
340 const char *name
= TYPE_TAG_NAME (type
);
341 int ninterfaces
, nfields
, nmethods
;
342 int type_is_object
= 0;
343 struct fn_field
*fn_fields
;
344 struct fn_fieldlist
*fn_fieldlists
;
345 struct value
*fields
;
346 struct value
*methods
;
347 struct value
*method
= NULL
;
348 struct value
*field
= NULL
;
350 struct objfile
*objfile
= get_dynamics_objfile (gdbarch
);
353 gdb_assert (name
!= NULL
);
354 unqualified_name
= strrchr (name
, '.');
355 if (unqualified_name
== NULL
)
356 unqualified_name
= name
;
359 temp
= value_struct_elt (&temp
, NULL
, "superclass", NULL
, "structure");
360 if (strcmp (name
, "java.lang.Object") == 0)
362 tsuper
= get_java_object_type ();
363 if (tsuper
&& TYPE_CODE (tsuper
) == TYPE_CODE_PTR
)
364 tsuper
= TYPE_TARGET_TYPE (tsuper
);
368 tsuper
= type_from_class (gdbarch
, temp
);
374 ninterfaces
= value_as_long (value_struct_elt (&temp
, NULL
, "interface_len",
377 TYPE_N_BASECLASSES (type
) = (tsuper
== NULL
? 0 : 1) + ninterfaces
;
379 nfields
= value_as_long (value_struct_elt (&temp
, NULL
, "field_count",
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",
423 TYPE_LENGTH (type
) = value_as_long (temp
);
427 nfields
--; /* First set up dummy "class" field. */
428 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, nfields
), value_address (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
++)
441 fields
= value_struct_elt (&temp
, NULL
, "fields", NULL
, "structure");
442 field
= value_ind (fields
);
445 { /* Re-use field value for next field. */
447 = value_address (field
) + TYPE_LENGTH (value_type (field
));
449 set_value_address (field
, addr
);
450 set_value_lazy (field
, 1);
453 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
454 TYPE_FIELD_NAME (type
, i
) =
455 get_java_utf8_name (&objfile
->objfile_obstack
, temp
);
457 accflags
= value_as_long (value_struct_elt (&temp
, NULL
, "accflags",
460 temp
= value_struct_elt (&temp
, NULL
, "info", NULL
, "structure");
461 boffset
= value_as_long (value_struct_elt (&temp
, NULL
, "boffset",
463 if (accflags
& 0x0001) /* public access */
467 if (accflags
& 0x0002) /* private access */
469 SET_TYPE_FIELD_PRIVATE (type
, i
);
471 if (accflags
& 0x0004) /* protected access */
473 SET_TYPE_FIELD_PROTECTED (type
, i
);
475 if (accflags
& 0x0008) /* ACC_STATIC */
476 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, i
), boffset
);
478 SET_FIELD_BITPOS (TYPE_FIELD (type
, i
), 8 * boffset
);
479 if (accflags
& 0x8000) /* FIELD_UNRESOLVED_FLAG */
481 TYPE_FIELD_TYPE (type
, i
) = get_java_object_type (); /* FIXME */
488 temp
= value_struct_elt (&temp
, NULL
, "type", NULL
, "structure");
489 ftype
= type_from_class (gdbarch
, temp
);
490 if (TYPE_CODE (ftype
) == TYPE_CODE_STRUCT
)
491 ftype
= lookup_pointer_type (ftype
);
492 TYPE_FIELD_TYPE (type
, i
) = ftype
;
497 nmethods
= value_as_long (value_struct_elt (&temp
, NULL
, "method_count",
499 j
= nmethods
* sizeof (struct fn_field
);
500 fn_fields
= (struct fn_field
*)
501 obstack_alloc (&objfile
->objfile_obstack
, j
);
502 memset (fn_fields
, 0, j
);
503 fn_fieldlists
= (struct fn_fieldlist
*)
504 alloca (nmethods
* sizeof (struct fn_fieldlist
));
507 for (i
= 0; i
< nmethods
; i
++)
515 methods
= value_struct_elt (&temp
, NULL
, "methods",
517 method
= value_ind (methods
);
520 { /* Re-use method value for next method. */
522 = value_address (method
) + TYPE_LENGTH (value_type (method
));
524 set_value_address (method
, addr
);
525 set_value_lazy (method
, 1);
528 /* Get method name. */
530 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
531 mname
= get_java_utf8_name (&objfile
->objfile_obstack
, temp
);
532 if (strcmp (mname
, "<init>") == 0)
533 mname
= unqualified_name
;
535 /* Check for an existing method with the same name.
536 * This makes building the fn_fieldslists an O(nmethods**2)
537 * operation. That could be using hashing, but I doubt it
538 * is worth it. Note that we do maintain the order of methods
539 * in the inferior's Method table (as long as that is grouped
540 * by method name), which I think is desirable. --PB */
541 for (k
= 0, j
= TYPE_NFN_FIELDS (type
);;)
544 { /* No match - new method name. */
545 j
= TYPE_NFN_FIELDS (type
)++;
546 fn_fieldlists
[j
].name
= mname
;
547 fn_fieldlists
[j
].length
= 1;
548 fn_fieldlists
[j
].fn_fields
= &fn_fields
[i
];
552 if (strcmp (mname
, fn_fieldlists
[j
].name
) == 0)
553 { /* Found an existing method with the same name. */
556 if (mname
!= unqualified_name
)
557 obstack_free (&objfile
->objfile_obstack
, mname
);
558 mname
= fn_fieldlists
[j
].name
;
559 fn_fieldlists
[j
].length
++;
560 k
= i
- k
; /* Index of new slot. */
561 /* Shift intervening fn_fields (between k and i) down. */
562 for (l
= i
; l
> k
; l
--)
563 fn_fields
[l
] = fn_fields
[l
- 1];
564 for (l
= TYPE_NFN_FIELDS (type
); --l
> j
;)
565 fn_fieldlists
[l
].fn_fields
++;
568 k
+= fn_fieldlists
[j
].length
;
570 fn_fields
[k
].physname
= "";
571 fn_fields
[k
].is_stub
= 1;
573 fn_fields
[k
].type
= lookup_function_type
574 (builtin_java_type (gdbarch
)->builtin_void
);
575 TYPE_CODE (fn_fields
[k
].type
) = TYPE_CODE_METHOD
;
578 j
= TYPE_NFN_FIELDS (type
) * sizeof (struct fn_fieldlist
);
579 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
580 obstack_alloc (&objfile
->objfile_obstack
, j
);
581 memcpy (TYPE_FN_FIELDLISTS (type
), fn_fieldlists
, j
);
587 get_java_object_type (void)
591 sym
= lookup_symbol ("java.lang.Object", NULL
, STRUCT_DOMAIN
, NULL
);
593 error (_("cannot find java.lang.Object"));
594 return SYMBOL_TYPE (sym
);
598 get_java_object_header_size (struct gdbarch
*gdbarch
)
600 struct type
*objtype
= get_java_object_type ();
603 return (2 * gdbarch_ptr_bit (gdbarch
) / TARGET_CHAR_BIT
);
605 return TYPE_LENGTH (objtype
);
609 is_object_type (struct 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)
624 = TYPE_NFIELDS (ttype
) > 0 ? TYPE_FIELD_NAME (ttype
, 0) : (char *) 0;
625 if (name
!= NULL
&& strcmp (name
, "vtable") == 0)
632 java_primitive_type (struct gdbarch
*gdbarch
, int signature
)
634 const struct builtin_java_type
*builtin
= builtin_java_type (gdbarch
);
639 return builtin
->builtin_byte
;
641 return builtin
->builtin_short
;
643 return builtin
->builtin_int
;
645 return builtin
->builtin_long
;
647 return builtin
->builtin_boolean
;
649 return builtin
->builtin_char
;
651 return builtin
->builtin_float
;
653 return builtin
->builtin_double
;
655 return builtin
->builtin_void
;
657 error (_("unknown signature '%c' for primitive type"), (char) signature
);
660 /* If name[0 .. namelen-1] is the name of a primitive Java type,
661 return that type. Otherwise, return NULL. */
664 java_primitive_type_from_name (struct gdbarch
*gdbarch
,
665 const char *name
, int namelen
)
667 const struct builtin_java_type
*builtin
= builtin_java_type (gdbarch
);
672 if (namelen
== 4 && memcmp (name
, "byte", 4) == 0)
673 return builtin
->builtin_byte
;
674 if (namelen
== 7 && memcmp (name
, "boolean", 7) == 0)
675 return builtin
->builtin_boolean
;
678 if (namelen
== 4 && memcmp (name
, "char", 4) == 0)
679 return builtin
->builtin_char
;
682 if (namelen
== 6 && memcmp (name
, "double", 6) == 0)
683 return builtin
->builtin_double
;
686 if (namelen
== 5 && memcmp (name
, "float", 5) == 0)
687 return builtin
->builtin_float
;
690 if (namelen
== 3 && memcmp (name
, "int", 3) == 0)
691 return builtin
->builtin_int
;
694 if (namelen
== 4 && memcmp (name
, "long", 4) == 0)
695 return builtin
->builtin_long
;
698 if (namelen
== 5 && memcmp (name
, "short", 5) == 0)
699 return builtin
->builtin_short
;
702 if (namelen
== 4 && memcmp (name
, "void", 4) == 0)
703 return builtin
->builtin_void
;
710 java_primitive_type_name (int signature
)
733 error (_("unknown signature '%c' for primitive type"), (char) signature
);
736 /* Return the length (in bytes) of demangled name of the Java type
737 signature string SIGNATURE. */
740 java_demangled_signature_length (const char *signature
)
744 for (; *signature
== '['; signature
++)
745 array
+= 2; /* Two chars for "[]". */
746 switch (signature
[0])
749 /* Subtract 2 for 'L' and ';'. */
750 return strlen (signature
) - 2 + array
;
752 return strlen (java_primitive_type_name (signature
[0])) + array
;
756 /* Demangle the Java type signature SIGNATURE, leaving the result in
760 java_demangled_signature_copy (char *result
, const char *signature
)
766 while (*signature
== '[')
771 switch (signature
[0])
774 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
777 for (; *signature
!= ';' && *signature
!= '\0'; signature
++)
779 if (*signature
== '/')
786 ptr
= java_primitive_type_name (signature
[0]);
788 strcpy (result
, ptr
);
799 /* Return the demangled name of the Java type signature string SIGNATURE,
800 as a freshly allocated copy. */
803 java_demangle_type_signature (const char *signature
)
805 int length
= java_demangled_signature_length (signature
);
806 char *result
= xmalloc (length
+ 1);
808 java_demangled_signature_copy (result
, signature
);
809 result
[length
] = '\0';
813 /* Return the type of TYPE followed by DIMS pairs of [ ].
814 If DIMS == 0, TYPE is returned. */
817 java_array_type (struct type
*type
, int dims
)
821 /* FIXME This is bogus! Java arrays are not gdb arrays! */
822 type
= lookup_array_range_type (type
, 0, 0);
828 /* Create a Java string in the inferior from a (Utf8) literal. */
830 static struct value
*
831 java_value_string (char *ptr
, int len
)
833 error (_("not implemented - java_value_string")); /* FIXME */
836 /* Return the encoding that should be used for the character type
840 java_get_encoding (struct type
*type
)
842 struct gdbarch
*arch
= get_type_arch (type
);
843 const char *encoding
;
845 if (type
== builtin_java_type (arch
)->builtin_char
)
847 if (gdbarch_byte_order (arch
) == BFD_ENDIAN_BIG
)
848 encoding
= "UTF-16BE";
850 encoding
= "UTF-16LE";
853 encoding
= target_charset (arch
);
858 /* Print the character C on STREAM as part of the contents of a literal
859 string whose delimiter is QUOTER. Note that that format for printing
860 characters and strings is language specific. */
863 java_emit_char (int c
, struct type
*type
, struct ui_file
*stream
, int quoter
)
865 const char *encoding
= java_get_encoding (type
);
867 generic_emit_char (c
, type
, stream
, quoter
, encoding
);
870 /* Implementation of la_printchar method. */
873 java_printchar (int c
, struct type
*type
, struct ui_file
*stream
)
875 fputs_filtered ("'", stream
);
876 LA_EMIT_CHAR (c
, type
, stream
, '\'');
877 fputs_filtered ("'", stream
);
880 /* Implementation of la_printstr method. */
883 java_printstr (struct ui_file
*stream
, struct type
*type
,
884 const gdb_byte
*string
,
885 unsigned int length
, const char *encoding
, int force_ellipses
,
886 const struct value_print_options
*options
)
888 const char *type_encoding
= java_get_encoding (type
);
890 if (!encoding
|| !*encoding
)
891 encoding
= type_encoding
;
893 generic_printstr (stream
, type
, string
, length
, encoding
,
894 force_ellipses
, '"', 0, options
);
897 static struct value
*
898 evaluate_subexp_java (struct type
*expect_type
, struct expression
*exp
,
899 int *pos
, enum noside noside
)
904 enum exp_opcode op
= exp
->elts
[*pos
].opcode
;
912 if (noside
== EVAL_SKIP
)
915 arg1
= evaluate_subexp_java (NULL_TYPE
, exp
, pos
, EVAL_NORMAL
);
916 if (is_object_type (value_type (arg1
)))
920 type
= type_from_class (exp
->gdbarch
, java_class_from_object (arg1
));
921 arg1
= value_cast (lookup_pointer_type (type
), arg1
);
923 return value_ind (arg1
);
925 case BINOP_SUBSCRIPT
:
927 arg1
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
928 arg2
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
929 if (noside
== EVAL_SKIP
)
931 /* If the user attempts to subscript something that is not an
932 array or pointer type (like a plain int variable for example),
933 then report this as an error. */
935 arg1
= coerce_ref (arg1
);
936 type
= check_typedef (value_type (arg1
));
937 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
938 type
= check_typedef (TYPE_TARGET_TYPE (type
));
939 name
= TYPE_NAME (type
);
941 name
= TYPE_TAG_NAME (type
);
942 i
= name
== NULL
? 0 : strlen (name
);
943 if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
944 && i
> 2 && name
[i
- 1] == ']')
946 enum bfd_endian byte_order
= gdbarch_byte_order (exp
->gdbarch
);
949 struct type
*el_type
;
952 struct value
*clas
= java_class_from_object (arg1
);
953 struct value
*temp
= clas
;
954 /* Get CLASS_ELEMENT_TYPE of the array type. */
955 temp
= value_struct_elt (&temp
, NULL
, "methods",
957 deprecated_set_value_type (temp
, value_type (clas
));
958 el_type
= type_from_class (exp
->gdbarch
, temp
);
959 if (TYPE_CODE (el_type
) == TYPE_CODE_STRUCT
)
960 el_type
= lookup_pointer_type (el_type
);
962 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
963 return value_zero (el_type
, VALUE_LVAL (arg1
));
964 address
= value_as_address (arg1
);
965 address
+= get_java_object_header_size (exp
->gdbarch
);
966 read_memory (address
, buf4
, 4);
967 length
= (long) extract_signed_integer (buf4
, 4, byte_order
);
968 index
= (long) value_as_long (arg2
);
969 if (index
>= length
|| index
< 0)
970 error (_("array index (%ld) out of bounds (length: %ld)"),
972 address
= (address
+ 4) + index
* TYPE_LENGTH (el_type
);
973 return value_at (el_type
, address
);
975 else if (TYPE_CODE (type
) == TYPE_CODE_ARRAY
)
977 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
978 return value_zero (TYPE_TARGET_TYPE (type
), VALUE_LVAL (arg1
));
980 return value_subscript (arg1
, value_as_long (arg2
));
983 error (_("cannot subscript something of type `%s'"), name
);
985 error (_("cannot subscript requested type"));
989 i
= longest_to_int (exp
->elts
[pc
+ 1].longconst
);
990 (*pos
) += 3 + BYTES_TO_EXP_ELEM (i
+ 1);
991 if (noside
== EVAL_SKIP
)
993 return java_value_string (&exp
->elts
[pc
+ 2].string
, i
);
996 arg1
= evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
997 /* Convert object field (such as TYPE.class) to reference. */
998 if (TYPE_CODE (value_type (arg1
)) == TYPE_CODE_STRUCT
)
999 arg1
= value_addr (arg1
);
1005 return evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
1007 return value_from_longest (builtin_type (exp
->gdbarch
)->builtin_int
, 1);
1010 static char *java_demangle (const char *mangled
, int options
)
1012 return gdb_demangle (mangled
, options
| DMGL_JAVA
);
1015 /* Find the member function name of the demangled name NAME. NAME
1016 must be a method name including arguments, in order to correctly
1017 locate the last component.
1019 This function return a pointer to the first dot before the
1020 member function name, or NULL if the name was not of the
1024 java_find_last_component (const char *name
)
1028 /* Find argument list. */
1029 p
= strchr (name
, '(');
1034 /* Back up and find first dot prior to argument list. */
1035 while (p
> name
&& *p
!= '.')
1044 /* Return the name of the class containing method PHYSNAME. */
1047 java_class_name_from_physname (const char *physname
)
1051 char *demangled_name
= java_demangle (physname
, DMGL_PARAMS
| DMGL_ANSI
);
1053 if (demangled_name
== NULL
)
1056 end
= java_find_last_component (demangled_name
);
1059 ret
= xmalloc (end
- demangled_name
+ 1);
1060 memcpy (ret
, demangled_name
, end
- demangled_name
);
1061 ret
[end
- demangled_name
] = '\0';
1064 xfree (demangled_name
);
1068 /* Table mapping opcodes into strings for printing operators
1069 and precedences of the operators. */
1071 const struct op_print java_op_print_tab
[] =
1073 {",", BINOP_COMMA
, PREC_COMMA
, 0},
1074 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
1075 {"||", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
1076 {"&&", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
1077 {"|", BINOP_BITWISE_IOR
, PREC_BITWISE_IOR
, 0},
1078 {"^", BINOP_BITWISE_XOR
, PREC_BITWISE_XOR
, 0},
1079 {"&", BINOP_BITWISE_AND
, PREC_BITWISE_AND
, 0},
1080 {"==", BINOP_EQUAL
, PREC_EQUAL
, 0},
1081 {"!=", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
1082 {"<=", BINOP_LEQ
, PREC_ORDER
, 0},
1083 {">=", BINOP_GEQ
, PREC_ORDER
, 0},
1084 {">", BINOP_GTR
, PREC_ORDER
, 0},
1085 {"<", BINOP_LESS
, PREC_ORDER
, 0},
1086 {">>", BINOP_RSH
, PREC_SHIFT
, 0},
1087 {"<<", BINOP_LSH
, PREC_SHIFT
, 0},
1088 {"+", BINOP_ADD
, PREC_ADD
, 0},
1089 {"-", BINOP_SUB
, PREC_ADD
, 0},
1090 {"*", BINOP_MUL
, PREC_MUL
, 0},
1091 {"/", BINOP_DIV
, PREC_MUL
, 0},
1092 {"%", BINOP_REM
, PREC_MUL
, 0},
1093 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
1094 {"!", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
1095 {"~", UNOP_COMPLEMENT
, PREC_PREFIX
, 0},
1096 {"*", UNOP_IND
, PREC_PREFIX
, 0},
1097 {"++", UNOP_PREINCREMENT
, PREC_PREFIX
, 0},
1098 {"--", UNOP_PREDECREMENT
, PREC_PREFIX
, 0},
1102 enum java_primitive_types
1104 java_primitive_type_int
,
1105 java_primitive_type_short
,
1106 java_primitive_type_long
,
1107 java_primitive_type_byte
,
1108 java_primitive_type_boolean
,
1109 java_primitive_type_char
,
1110 java_primitive_type_float
,
1111 java_primitive_type_double
,
1112 java_primitive_type_void
,
1113 nr_java_primitive_types
1117 java_language_arch_info (struct gdbarch
*gdbarch
,
1118 struct language_arch_info
*lai
)
1120 const struct builtin_java_type
*builtin
= builtin_java_type (gdbarch
);
1122 lai
->string_char_type
= builtin
->builtin_char
;
1123 lai
->primitive_type_vector
1124 = GDBARCH_OBSTACK_CALLOC (gdbarch
, nr_java_primitive_types
+ 1,
1126 lai
->primitive_type_vector
[java_primitive_type_int
]
1127 = builtin
->builtin_int
;
1128 lai
->primitive_type_vector
[java_primitive_type_short
]
1129 = builtin
->builtin_short
;
1130 lai
->primitive_type_vector
[java_primitive_type_long
]
1131 = builtin
->builtin_long
;
1132 lai
->primitive_type_vector
[java_primitive_type_byte
]
1133 = builtin
->builtin_byte
;
1134 lai
->primitive_type_vector
[java_primitive_type_boolean
]
1135 = builtin
->builtin_boolean
;
1136 lai
->primitive_type_vector
[java_primitive_type_char
]
1137 = builtin
->builtin_char
;
1138 lai
->primitive_type_vector
[java_primitive_type_float
]
1139 = builtin
->builtin_float
;
1140 lai
->primitive_type_vector
[java_primitive_type_double
]
1141 = builtin
->builtin_double
;
1142 lai
->primitive_type_vector
[java_primitive_type_void
]
1143 = builtin
->builtin_void
;
1145 lai
->bool_type_symbol
= "boolean";
1146 lai
->bool_type_default
= builtin
->builtin_boolean
;
1149 const struct exp_descriptor exp_descriptor_java
=
1151 print_subexp_standard
,
1152 operator_length_standard
,
1153 operator_check_standard
,
1155 dump_subexp_body_standard
,
1156 evaluate_subexp_java
1159 const struct language_defn java_language_defn
=
1161 "java", /* Language name */
1168 &exp_descriptor_java
,
1172 java_printchar
, /* Print a character constant */
1173 java_printstr
, /* Function to print string constant */
1174 java_emit_char
, /* Function to print a single character */
1175 java_print_type
, /* Print a type using appropriate syntax */
1176 default_print_typedef
, /* Print a typedef using appropriate syntax */
1177 java_val_print
, /* Print a value using appropriate syntax */
1178 java_value_print
, /* Print a top-level value */
1179 default_read_var_value
, /* la_read_var_value */
1180 NULL
, /* Language specific skip_trampoline */
1181 "this", /* name_of_this */
1182 basic_lookup_symbol_nonlocal
, /* lookup_symbol_nonlocal */
1183 basic_lookup_transparent_type
,/* lookup_transparent_type */
1184 java_demangle
, /* Language specific symbol demangler */
1185 java_class_name_from_physname
,/* Language specific class name */
1186 java_op_print_tab
, /* expression operators for printing */
1187 0, /* not c-style arrays */
1188 0, /* String lower bound */
1189 default_word_break_characters
,
1190 default_make_symbol_completion_list
,
1191 java_language_arch_info
,
1192 default_print_array_index
,
1193 default_pass_by_reference
,
1195 NULL
, /* la_get_symbol_name_cmp */
1196 iterate_over_symbols
,
1202 build_java_types (struct gdbarch
*gdbarch
)
1204 struct builtin_java_type
*builtin_java_type
1205 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_java_type
);
1207 builtin_java_type
->builtin_int
1208 = arch_integer_type (gdbarch
, 32, 0, "int");
1209 builtin_java_type
->builtin_short
1210 = arch_integer_type (gdbarch
, 16, 0, "short");
1211 builtin_java_type
->builtin_long
1212 = arch_integer_type (gdbarch
, 64, 0, "long");
1213 builtin_java_type
->builtin_byte
1214 = arch_integer_type (gdbarch
, 8, 0, "byte");
1215 builtin_java_type
->builtin_boolean
1216 = arch_boolean_type (gdbarch
, 8, 0, "boolean");
1217 builtin_java_type
->builtin_char
1218 = arch_character_type (gdbarch
, 16, 1, "char");
1219 builtin_java_type
->builtin_float
1220 = arch_float_type (gdbarch
, 32, "float", NULL
);
1221 builtin_java_type
->builtin_double
1222 = arch_float_type (gdbarch
, 64, "double", NULL
);
1223 builtin_java_type
->builtin_void
1224 = arch_type (gdbarch
, TYPE_CODE_VOID
, 1, "void");
1226 return builtin_java_type
;
1229 static struct gdbarch_data
*java_type_data
;
1231 const struct builtin_java_type
*
1232 builtin_java_type (struct gdbarch
*gdbarch
)
1234 return gdbarch_data (gdbarch
, java_type_data
);
1238 _initialize_java_language (void)
1240 jv_dynamics_objfile_data_key
1241 = register_objfile_data_with_cleanup (NULL
, jv_per_objfile_free
);
1242 jv_dynamics_progspace_key
= register_program_space_data ();
1244 java_type_data
= gdbarch_data_register_post_init (build_java_types
);
1246 add_language (&java_language_defn
);