1 /* Java language support routines for GDB, the GNU debugger.
3 Copyright (C) 1997-2013 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"
30 #include "gdb_string.h"
37 #include "dictionary.h"
39 #include "gdb_assert.h"
45 extern void _initialize_java_language (void);
47 static int java_demangled_signature_length (const char *);
48 static void java_demangled_signature_copy (char *, const char *);
50 static struct symtab
*get_java_class_symtab (struct gdbarch
*gdbarch
);
51 static char *get_java_utf8_name (struct obstack
*obstack
, struct value
*name
);
52 static int java_class_is_primitive (struct value
*clas
);
53 static struct value
*java_value_string (char *ptr
, int len
);
55 static void java_emit_char (int c
, struct type
*type
,
56 struct ui_file
* stream
, int quoter
);
58 static char *java_class_name_from_physname (const char *physname
);
60 static const struct objfile_data
*jv_dynamics_objfile_data_key
;
62 /* The dynamic objfile is kept per-program-space. This key lets us
63 associate the objfile with the program space. */
65 static const struct program_space_data
*jv_dynamics_progspace_key
;
67 static struct type
*java_link_class_type (struct gdbarch
*,
68 struct type
*, struct value
*);
70 /* An instance of this structure is used to store some data that must
73 struct jv_per_objfile_data
75 /* The expandable dictionary we use. */
76 struct dictionary
*dict
;
79 /* A function called when the dynamics_objfile is freed. We use this
80 to clean up some internal state. */
82 jv_per_objfile_free (struct objfile
*objfile
, void *data
)
84 struct jv_per_objfile_data
*jv_data
= data
;
85 struct objfile
*dynamics_objfile
;
87 dynamics_objfile
= program_space_data (current_program_space
,
88 jv_dynamics_progspace_key
);
89 gdb_assert (objfile
== dynamics_objfile
);
92 dict_free (jv_data
->dict
);
95 set_program_space_data (current_program_space
,
96 jv_dynamics_progspace_key
,
100 /* FIXME: carlton/2003-02-04: This is the main or only caller of
101 allocate_objfile with first argument NULL; as a result, this code
102 breaks every so often. Somebody should write a test case that
103 exercises GDB in various ways (e.g. something involving loading a
104 dynamic library) after this code has been called. */
106 static struct objfile
*
107 get_dynamics_objfile (struct gdbarch
*gdbarch
)
109 struct objfile
*dynamics_objfile
;
111 dynamics_objfile
= program_space_data (current_program_space
,
112 jv_dynamics_progspace_key
);
114 if (dynamics_objfile
== NULL
)
116 struct jv_per_objfile_data
*data
;
118 /* Mark it as shared so that it is cleared when the inferior is
120 dynamics_objfile
= allocate_objfile (NULL
, OBJF_SHARED
);
121 dynamics_objfile
->gdbarch
= gdbarch
;
123 data
= XCNEW (struct jv_per_objfile_data
);
124 set_objfile_data (dynamics_objfile
, jv_dynamics_objfile_data_key
, data
);
126 set_program_space_data (current_program_space
,
127 jv_dynamics_progspace_key
,
130 return dynamics_objfile
;
133 static struct symtab
*
134 get_java_class_symtab (struct gdbarch
*gdbarch
)
136 struct objfile
*objfile
= get_dynamics_objfile (gdbarch
);
137 struct symtab
*class_symtab
= objfile
->symtabs
;
139 if (class_symtab
== NULL
)
141 struct blockvector
*bv
;
143 struct jv_per_objfile_data
*jv_data
;
145 class_symtab
= allocate_symtab ("<java-classes>", objfile
);
146 class_symtab
->language
= language_java
;
147 bv
= (struct blockvector
*)
148 obstack_alloc (&objfile
->objfile_obstack
,
149 sizeof (struct blockvector
) + sizeof (struct block
*));
150 BLOCKVECTOR_NBLOCKS (bv
) = 1;
151 BLOCKVECTOR (class_symtab
) = bv
;
153 /* Allocate dummy STATIC_BLOCK. */
154 bl
= allocate_block (&objfile
->objfile_obstack
);
155 BLOCK_DICT (bl
) = dict_create_linear (&objfile
->objfile_obstack
,
157 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = bl
;
159 /* Allocate GLOBAL_BLOCK. */
160 bl
= allocate_global_block (&objfile
->objfile_obstack
);
161 BLOCK_DICT (bl
) = dict_create_hashed_expandable ();
162 set_block_symtab (bl
, class_symtab
);
163 BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
) = bl
;
165 /* Arrange to free the dict. */
166 jv_data
= objfile_data (objfile
, jv_dynamics_objfile_data_key
);
167 jv_data
->dict
= BLOCK_DICT (bl
);
173 add_class_symtab_symbol (struct symbol
*sym
)
175 struct symtab
*symtab
176 = get_java_class_symtab (get_objfile_arch (SYMBOL_SYMTAB (sym
)->objfile
));
177 struct blockvector
*bv
= BLOCKVECTOR (symtab
);
179 dict_add_symbol (BLOCK_DICT (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
)), sym
);
182 static struct symbol
*
183 add_class_symbol (struct type
*type
, CORE_ADDR addr
)
186 struct objfile
*objfile
= get_dynamics_objfile (get_type_arch (type
));
188 sym
= allocate_symbol (objfile
);
189 SYMBOL_SET_LANGUAGE (sym
, language_java
, &objfile
->objfile_obstack
);
190 SYMBOL_SET_LINKAGE_NAME (sym
, TYPE_TAG_NAME (type
));
191 SYMBOL_ACLASS_INDEX (sym
) = LOC_TYPEDEF
;
192 /* SYMBOL_VALUE (sym) = valu; */
193 SYMBOL_TYPE (sym
) = type
;
194 SYMBOL_DOMAIN (sym
) = STRUCT_DOMAIN
;
195 SYMBOL_VALUE_ADDRESS (sym
) = addr
;
200 java_lookup_class (char *name
)
204 sym
= lookup_symbol (name
, expression_context_block
, STRUCT_DOMAIN
, NULL
);
206 return SYMBOL_TYPE (sym
);
207 /* FIXME - should search inferior's symbol table. */
211 /* Return a nul-terminated string (allocated on OBSTACK) for
212 a name given by NAME (which has type Utf8Const*). */
215 get_java_utf8_name (struct obstack
*obstack
, struct value
*name
)
218 struct value
*temp
= name
;
222 temp
= value_struct_elt (&temp
, NULL
, "length", NULL
, "structure");
223 name_length
= (int) value_as_long (temp
);
224 data_addr
= value_address (temp
) + TYPE_LENGTH (value_type (temp
));
225 chrs
= obstack_alloc (obstack
, name_length
+ 1);
226 chrs
[name_length
] = '\0';
227 read_memory (data_addr
, (gdb_byte
*) chrs
, name_length
);
232 java_class_from_object (struct value
*obj_val
)
234 /* This is all rather inefficient, since the offsets of vtable and
235 class are fixed. FIXME */
236 struct value
*vtable_val
;
238 if (TYPE_CODE (value_type (obj_val
)) == TYPE_CODE_PTR
239 && TYPE_LENGTH (TYPE_TARGET_TYPE (value_type (obj_val
))) == 0)
240 obj_val
= value_at (get_java_object_type (),
241 value_as_address (obj_val
));
243 vtable_val
= value_struct_elt (&obj_val
, NULL
, "vtable", NULL
, "structure");
244 return value_struct_elt (&vtable_val
, NULL
, "class", NULL
, "structure");
247 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
249 java_class_is_primitive (struct value
*clas
)
251 struct value
*vtable
= value_struct_elt (&clas
, NULL
, "vtable",
253 CORE_ADDR i
= value_as_address (vtable
);
255 return (int) (i
& 0x7fffffff) == (int) 0x7fffffff;
258 /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
261 type_from_class (struct gdbarch
*gdbarch
, struct value
*clas
)
266 struct objfile
*objfile
;
267 struct value
*utf8_name
;
271 type
= check_typedef (value_type (clas
));
272 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
274 if (value_logical_not (clas
))
276 clas
= value_ind (clas
);
278 addr
= value_address (clas
);
280 objfile
= get_dynamics_objfile (gdbarch
);
281 if (java_class_is_primitive (clas
))
286 sig
= value_struct_elt (&temp
, NULL
, "method_count", NULL
, "structure");
287 return java_primitive_type (gdbarch
, value_as_long (sig
));
290 /* Get Class name. */
291 /* If clasloader non-null, prepend loader address. FIXME */
293 utf8_name
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
294 name
= get_java_utf8_name (&objfile
->objfile_obstack
, utf8_name
);
295 for (nptr
= name
; *nptr
!= 0; nptr
++)
301 type
= java_lookup_class (name
);
305 type
= alloc_type (objfile
);
306 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
307 INIT_CPLUS_SPECIFIC (type
);
311 char *signature
= name
;
312 int namelen
= java_demangled_signature_length (signature
);
314 if (namelen
> strlen (name
))
315 name
= obstack_alloc (&objfile
->objfile_obstack
, namelen
+ 1);
316 java_demangled_signature_copy (name
, signature
);
317 name
[namelen
] = '\0';
319 /* Set array element type. */
320 temp
= value_struct_elt (&temp
, NULL
, "methods", NULL
, "structure");
321 deprecated_set_value_type (temp
,
322 lookup_pointer_type (value_type (clas
)));
323 TYPE_TARGET_TYPE (type
) = type_from_class (gdbarch
, temp
);
326 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
327 TYPE_TAG_NAME (type
) = name
;
329 add_class_symtab_symbol (add_class_symbol (type
, addr
));
330 return java_link_class_type (gdbarch
, type
, clas
);
333 /* Fill in class TYPE with data from the CLAS value. */
336 java_link_class_type (struct gdbarch
*gdbarch
,
337 struct type
*type
, struct value
*clas
)
340 const char *unqualified_name
;
341 const char *name
= TYPE_TAG_NAME (type
);
342 int ninterfaces
, nfields
, nmethods
;
343 int type_is_object
= 0;
344 struct fn_field
*fn_fields
;
345 struct fn_fieldlist
*fn_fieldlists
;
346 struct value
*fields
;
347 struct value
*methods
;
348 struct value
*method
= NULL
;
349 struct value
*field
= NULL
;
351 struct objfile
*objfile
= get_dynamics_objfile (gdbarch
);
354 gdb_assert (name
!= NULL
);
355 unqualified_name
= strrchr (name
, '.');
356 if (unqualified_name
== NULL
)
357 unqualified_name
= name
;
360 temp
= value_struct_elt (&temp
, NULL
, "superclass", NULL
, "structure");
361 if (strcmp (name
, "java.lang.Object") == 0)
363 tsuper
= get_java_object_type ();
364 if (tsuper
&& TYPE_CODE (tsuper
) == TYPE_CODE_PTR
)
365 tsuper
= TYPE_TARGET_TYPE (tsuper
);
369 tsuper
= type_from_class (gdbarch
, temp
);
375 ninterfaces
= value_as_long (value_struct_elt (&temp
, NULL
, "interface_len",
378 TYPE_N_BASECLASSES (type
) = (tsuper
== NULL
? 0 : 1) + ninterfaces
;
380 nfields
= value_as_long (value_struct_elt (&temp
, NULL
, "field_count",
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",
424 TYPE_LENGTH (type
) = value_as_long (temp
);
428 nfields
--; /* First set up dummy "class" field. */
429 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, nfields
), value_address (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
++)
442 fields
= value_struct_elt (&temp
, NULL
, "fields", NULL
, "structure");
443 field
= value_ind (fields
);
446 { /* Re-use field value for next field. */
448 = value_address (field
) + TYPE_LENGTH (value_type (field
));
450 set_value_address (field
, addr
);
451 set_value_lazy (field
, 1);
454 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
455 TYPE_FIELD_NAME (type
, i
) =
456 get_java_utf8_name (&objfile
->objfile_obstack
, temp
);
458 accflags
= value_as_long (value_struct_elt (&temp
, NULL
, "accflags",
461 temp
= value_struct_elt (&temp
, NULL
, "info", NULL
, "structure");
462 boffset
= value_as_long (value_struct_elt (&temp
, NULL
, "boffset",
464 if (accflags
& 0x0001) /* public access */
468 if (accflags
& 0x0002) /* private access */
470 SET_TYPE_FIELD_PRIVATE (type
, i
);
472 if (accflags
& 0x0004) /* protected access */
474 SET_TYPE_FIELD_PROTECTED (type
, i
);
476 if (accflags
& 0x0008) /* ACC_STATIC */
477 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, i
), boffset
);
479 SET_FIELD_BITPOS (TYPE_FIELD (type
, i
), 8 * boffset
);
480 if (accflags
& 0x8000) /* FIELD_UNRESOLVED_FLAG */
482 TYPE_FIELD_TYPE (type
, i
) = get_java_object_type (); /* FIXME */
489 temp
= value_struct_elt (&temp
, NULL
, "type", NULL
, "structure");
490 ftype
= type_from_class (gdbarch
, temp
);
491 if (TYPE_CODE (ftype
) == TYPE_CODE_STRUCT
)
492 ftype
= lookup_pointer_type (ftype
);
493 TYPE_FIELD_TYPE (type
, i
) = ftype
;
498 nmethods
= value_as_long (value_struct_elt (&temp
, NULL
, "method_count",
500 j
= nmethods
* sizeof (struct fn_field
);
501 fn_fields
= (struct fn_field
*)
502 obstack_alloc (&objfile
->objfile_obstack
, j
);
503 memset (fn_fields
, 0, j
);
504 fn_fieldlists
= (struct fn_fieldlist
*)
505 alloca (nmethods
* sizeof (struct fn_fieldlist
));
508 for (i
= 0; i
< nmethods
; i
++)
516 methods
= value_struct_elt (&temp
, NULL
, "methods",
518 method
= value_ind (methods
);
521 { /* Re-use method value for next method. */
523 = value_address (method
) + TYPE_LENGTH (value_type (method
));
525 set_value_address (method
, addr
);
526 set_value_lazy (method
, 1);
529 /* Get method name. */
531 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
532 mname
= get_java_utf8_name (&objfile
->objfile_obstack
, temp
);
533 if (strcmp (mname
, "<init>") == 0)
534 mname
= unqualified_name
;
536 /* Check for an existing method with the same name.
537 * This makes building the fn_fieldslists an O(nmethods**2)
538 * operation. That could be using hashing, but I doubt it
539 * is worth it. Note that we do maintain the order of methods
540 * in the inferior's Method table (as long as that is grouped
541 * by method name), which I think is desirable. --PB */
542 for (k
= 0, j
= TYPE_NFN_FIELDS (type
);;)
545 { /* No match - new method name. */
546 j
= TYPE_NFN_FIELDS (type
)++;
547 fn_fieldlists
[j
].name
= mname
;
548 fn_fieldlists
[j
].length
= 1;
549 fn_fieldlists
[j
].fn_fields
= &fn_fields
[i
];
553 if (strcmp (mname
, fn_fieldlists
[j
].name
) == 0)
554 { /* Found an existing method with the same name. */
557 if (mname
!= unqualified_name
)
558 obstack_free (&objfile
->objfile_obstack
, mname
);
559 mname
= fn_fieldlists
[j
].name
;
560 fn_fieldlists
[j
].length
++;
561 k
= i
- k
; /* Index of new slot. */
562 /* Shift intervening fn_fields (between k and i) down. */
563 for (l
= i
; l
> k
; l
--)
564 fn_fields
[l
] = fn_fields
[l
- 1];
565 for (l
= TYPE_NFN_FIELDS (type
); --l
> j
;)
566 fn_fieldlists
[l
].fn_fields
++;
569 k
+= fn_fieldlists
[j
].length
;
571 fn_fields
[k
].physname
= "";
572 fn_fields
[k
].is_stub
= 1;
574 fn_fields
[k
].type
= lookup_function_type
575 (builtin_java_type (gdbarch
)->builtin_void
);
576 TYPE_CODE (fn_fields
[k
].type
) = TYPE_CODE_METHOD
;
579 j
= TYPE_NFN_FIELDS (type
) * sizeof (struct fn_fieldlist
);
580 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
581 obstack_alloc (&objfile
->objfile_obstack
, j
);
582 memcpy (TYPE_FN_FIELDLISTS (type
), fn_fieldlists
, j
);
588 get_java_object_type (void)
592 sym
= lookup_symbol ("java.lang.Object", NULL
, STRUCT_DOMAIN
, NULL
);
594 error (_("cannot find java.lang.Object"));
595 return SYMBOL_TYPE (sym
);
599 get_java_object_header_size (struct gdbarch
*gdbarch
)
601 struct type
*objtype
= get_java_object_type ();
604 return (2 * gdbarch_ptr_bit (gdbarch
) / TARGET_CHAR_BIT
);
606 return TYPE_LENGTH (objtype
);
610 is_object_type (struct type
*type
)
612 CHECK_TYPEDEF (type
);
613 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
615 struct type
*ttype
= check_typedef (TYPE_TARGET_TYPE (type
));
617 if (TYPE_CODE (ttype
) != TYPE_CODE_STRUCT
)
619 while (TYPE_N_BASECLASSES (ttype
) > 0)
620 ttype
= TYPE_BASECLASS (ttype
, 0);
621 name
= TYPE_TAG_NAME (ttype
);
622 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
625 = TYPE_NFIELDS (ttype
) > 0 ? TYPE_FIELD_NAME (ttype
, 0) : (char *) 0;
626 if (name
!= NULL
&& strcmp (name
, "vtable") == 0)
633 java_primitive_type (struct gdbarch
*gdbarch
, int signature
)
635 const struct builtin_java_type
*builtin
= builtin_java_type (gdbarch
);
640 return builtin
->builtin_byte
;
642 return builtin
->builtin_short
;
644 return builtin
->builtin_int
;
646 return builtin
->builtin_long
;
648 return builtin
->builtin_boolean
;
650 return builtin
->builtin_char
;
652 return builtin
->builtin_float
;
654 return builtin
->builtin_double
;
656 return builtin
->builtin_void
;
658 error (_("unknown signature '%c' for primitive type"), (char) signature
);
661 /* If name[0 .. namelen-1] is the name of a primitive Java type,
662 return that type. Otherwise, return NULL. */
665 java_primitive_type_from_name (struct gdbarch
*gdbarch
,
666 const char *name
, int namelen
)
668 const struct builtin_java_type
*builtin
= builtin_java_type (gdbarch
);
673 if (namelen
== 4 && memcmp (name
, "byte", 4) == 0)
674 return builtin
->builtin_byte
;
675 if (namelen
== 7 && memcmp (name
, "boolean", 7) == 0)
676 return builtin
->builtin_boolean
;
679 if (namelen
== 4 && memcmp (name
, "char", 4) == 0)
680 return builtin
->builtin_char
;
683 if (namelen
== 6 && memcmp (name
, "double", 6) == 0)
684 return builtin
->builtin_double
;
687 if (namelen
== 5 && memcmp (name
, "float", 5) == 0)
688 return builtin
->builtin_float
;
691 if (namelen
== 3 && memcmp (name
, "int", 3) == 0)
692 return builtin
->builtin_int
;
695 if (namelen
== 4 && memcmp (name
, "long", 4) == 0)
696 return builtin
->builtin_long
;
699 if (namelen
== 5 && memcmp (name
, "short", 5) == 0)
700 return builtin
->builtin_short
;
703 if (namelen
== 4 && memcmp (name
, "void", 4) == 0)
704 return builtin
->builtin_void
;
711 java_primitive_type_name (int signature
)
734 error (_("unknown signature '%c' for primitive type"), (char) signature
);
737 /* Return the length (in bytes) of demangled name of the Java type
738 signature string SIGNATURE. */
741 java_demangled_signature_length (const char *signature
)
745 for (; *signature
== '['; signature
++)
746 array
+= 2; /* Two chars for "[]". */
747 switch (signature
[0])
750 /* Subtract 2 for 'L' and ';'. */
751 return strlen (signature
) - 2 + array
;
753 return strlen (java_primitive_type_name (signature
[0])) + array
;
757 /* Demangle the Java type signature SIGNATURE, leaving the result in
761 java_demangled_signature_copy (char *result
, const char *signature
)
767 while (*signature
== '[')
772 switch (signature
[0])
775 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
778 for (; *signature
!= ';' && *signature
!= '\0'; signature
++)
780 if (*signature
== '/')
787 ptr
= java_primitive_type_name (signature
[0]);
789 strcpy (result
, ptr
);
800 /* Return the demangled name of the Java type signature string SIGNATURE,
801 as a freshly allocated copy. */
804 java_demangle_type_signature (const char *signature
)
806 int length
= java_demangled_signature_length (signature
);
807 char *result
= xmalloc (length
+ 1);
809 java_demangled_signature_copy (result
, signature
);
810 result
[length
] = '\0';
814 /* Return the type of TYPE followed by DIMS pairs of [ ].
815 If DIMS == 0, TYPE is returned. */
818 java_array_type (struct type
*type
, int dims
)
822 /* FIXME This is bogus! Java arrays are not gdb arrays! */
823 type
= lookup_array_range_type (type
, 0, 0);
829 /* Create a Java string in the inferior from a (Utf8) literal. */
831 static struct value
*
832 java_value_string (char *ptr
, int len
)
834 error (_("not implemented - java_value_string")); /* FIXME */
837 /* Return the encoding that should be used for the character type
841 java_get_encoding (struct type
*type
)
843 struct gdbarch
*arch
= get_type_arch (type
);
844 const char *encoding
;
846 if (type
== builtin_java_type (arch
)->builtin_char
)
848 if (gdbarch_byte_order (arch
) == BFD_ENDIAN_BIG
)
849 encoding
= "UTF-16BE";
851 encoding
= "UTF-16LE";
854 encoding
= target_charset (arch
);
859 /* Print the character C on STREAM as part of the contents of a literal
860 string whose delimiter is QUOTER. Note that that format for printing
861 characters and strings is language specific. */
864 java_emit_char (int c
, struct type
*type
, struct ui_file
*stream
, int quoter
)
866 const char *encoding
= java_get_encoding (type
);
868 generic_emit_char (c
, type
, stream
, quoter
, encoding
);
871 /* Implementation of la_printchar method. */
874 java_printchar (int c
, struct type
*type
, struct ui_file
*stream
)
876 fputs_filtered ("'", stream
);
877 LA_EMIT_CHAR (c
, type
, stream
, '\'');
878 fputs_filtered ("'", stream
);
881 /* Implementation of la_printstr method. */
884 java_printstr (struct ui_file
*stream
, struct type
*type
,
885 const gdb_byte
*string
,
886 unsigned int length
, const char *encoding
, int force_ellipses
,
887 const struct value_print_options
*options
)
889 const char *type_encoding
= java_get_encoding (type
);
891 if (!encoding
|| !*encoding
)
892 encoding
= type_encoding
;
894 generic_printstr (stream
, type
, string
, length
, encoding
,
895 force_ellipses
, '"', 0, options
);
898 static struct value
*
899 evaluate_subexp_java (struct type
*expect_type
, struct expression
*exp
,
900 int *pos
, enum noside noside
)
905 enum exp_opcode op
= exp
->elts
[*pos
].opcode
;
913 if (noside
== EVAL_SKIP
)
916 arg1
= evaluate_subexp_java (NULL_TYPE
, exp
, pos
, EVAL_NORMAL
);
917 if (is_object_type (value_type (arg1
)))
921 type
= type_from_class (exp
->gdbarch
, java_class_from_object (arg1
));
922 arg1
= value_cast (lookup_pointer_type (type
), arg1
);
924 return value_ind (arg1
);
926 case BINOP_SUBSCRIPT
:
928 arg1
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
929 arg2
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
930 if (noside
== EVAL_SKIP
)
932 /* If the user attempts to subscript something that is not an
933 array or pointer type (like a plain int variable for example),
934 then report this as an error. */
936 arg1
= coerce_ref (arg1
);
937 type
= check_typedef (value_type (arg1
));
938 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
939 type
= check_typedef (TYPE_TARGET_TYPE (type
));
940 name
= TYPE_NAME (type
);
942 name
= TYPE_TAG_NAME (type
);
943 i
= name
== NULL
? 0 : strlen (name
);
944 if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
945 && i
> 2 && name
[i
- 1] == ']')
947 enum bfd_endian byte_order
= gdbarch_byte_order (exp
->gdbarch
);
950 struct type
*el_type
;
953 struct value
*clas
= java_class_from_object (arg1
);
954 struct value
*temp
= clas
;
955 /* Get CLASS_ELEMENT_TYPE of the array type. */
956 temp
= value_struct_elt (&temp
, NULL
, "methods",
958 deprecated_set_value_type (temp
, value_type (clas
));
959 el_type
= type_from_class (exp
->gdbarch
, temp
);
960 if (TYPE_CODE (el_type
) == TYPE_CODE_STRUCT
)
961 el_type
= lookup_pointer_type (el_type
);
963 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
964 return value_zero (el_type
, VALUE_LVAL (arg1
));
965 address
= value_as_address (arg1
);
966 address
+= get_java_object_header_size (exp
->gdbarch
);
967 read_memory (address
, buf4
, 4);
968 length
= (long) extract_signed_integer (buf4
, 4, byte_order
);
969 index
= (long) value_as_long (arg2
);
970 if (index
>= length
|| index
< 0)
971 error (_("array index (%ld) out of bounds (length: %ld)"),
973 address
= (address
+ 4) + index
* TYPE_LENGTH (el_type
);
974 return value_at (el_type
, address
);
976 else if (TYPE_CODE (type
) == TYPE_CODE_ARRAY
)
978 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
979 return value_zero (TYPE_TARGET_TYPE (type
), VALUE_LVAL (arg1
));
981 return value_subscript (arg1
, value_as_long (arg2
));
984 error (_("cannot subscript something of type `%s'"), name
);
986 error (_("cannot subscript requested type"));
990 i
= longest_to_int (exp
->elts
[pc
+ 1].longconst
);
991 (*pos
) += 3 + BYTES_TO_EXP_ELEM (i
+ 1);
992 if (noside
== EVAL_SKIP
)
994 return java_value_string (&exp
->elts
[pc
+ 2].string
, i
);
997 arg1
= evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
998 /* Convert object field (such as TYPE.class) to reference. */
999 if (TYPE_CODE (value_type (arg1
)) == TYPE_CODE_STRUCT
)
1000 arg1
= value_addr (arg1
);
1006 return evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
1008 return value_from_longest (builtin_type (exp
->gdbarch
)->builtin_int
, 1);
1011 static char *java_demangle (const char *mangled
, int options
)
1013 return cplus_demangle (mangled
, options
| DMGL_JAVA
);
1016 /* Find the member function name of the demangled name NAME. NAME
1017 must be a method name including arguments, in order to correctly
1018 locate the last component.
1020 This function return a pointer to the first dot before the
1021 member function name, or NULL if the name was not of the
1025 java_find_last_component (const char *name
)
1029 /* Find argument list. */
1030 p
= strchr (name
, '(');
1035 /* Back up and find first dot prior to argument list. */
1036 while (p
> name
&& *p
!= '.')
1045 /* Return the name of the class containing method PHYSNAME. */
1048 java_class_name_from_physname (const char *physname
)
1052 char *demangled_name
= java_demangle (physname
, DMGL_PARAMS
| DMGL_ANSI
);
1054 if (demangled_name
== NULL
)
1057 end
= java_find_last_component (demangled_name
);
1060 ret
= xmalloc (end
- demangled_name
+ 1);
1061 memcpy (ret
, demangled_name
, end
- demangled_name
);
1062 ret
[end
- demangled_name
] = '\0';
1065 xfree (demangled_name
);
1069 /* Table mapping opcodes into strings for printing operators
1070 and precedences of the operators. */
1072 const struct op_print java_op_print_tab
[] =
1074 {",", BINOP_COMMA
, PREC_COMMA
, 0},
1075 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
1076 {"||", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
1077 {"&&", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
1078 {"|", BINOP_BITWISE_IOR
, PREC_BITWISE_IOR
, 0},
1079 {"^", BINOP_BITWISE_XOR
, PREC_BITWISE_XOR
, 0},
1080 {"&", BINOP_BITWISE_AND
, PREC_BITWISE_AND
, 0},
1081 {"==", BINOP_EQUAL
, PREC_EQUAL
, 0},
1082 {"!=", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
1083 {"<=", BINOP_LEQ
, PREC_ORDER
, 0},
1084 {">=", BINOP_GEQ
, PREC_ORDER
, 0},
1085 {">", BINOP_GTR
, PREC_ORDER
, 0},
1086 {"<", BINOP_LESS
, PREC_ORDER
, 0},
1087 {">>", BINOP_RSH
, PREC_SHIFT
, 0},
1088 {"<<", BINOP_LSH
, PREC_SHIFT
, 0},
1089 {"+", BINOP_ADD
, PREC_ADD
, 0},
1090 {"-", BINOP_SUB
, PREC_ADD
, 0},
1091 {"*", BINOP_MUL
, PREC_MUL
, 0},
1092 {"/", BINOP_DIV
, PREC_MUL
, 0},
1093 {"%", BINOP_REM
, PREC_MUL
, 0},
1094 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
1095 {"!", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
1096 {"~", UNOP_COMPLEMENT
, PREC_PREFIX
, 0},
1097 {"*", UNOP_IND
, PREC_PREFIX
, 0},
1098 {"++", UNOP_PREINCREMENT
, PREC_PREFIX
, 0},
1099 {"--", UNOP_PREDECREMENT
, PREC_PREFIX
, 0},
1103 enum java_primitive_types
1105 java_primitive_type_int
,
1106 java_primitive_type_short
,
1107 java_primitive_type_long
,
1108 java_primitive_type_byte
,
1109 java_primitive_type_boolean
,
1110 java_primitive_type_char
,
1111 java_primitive_type_float
,
1112 java_primitive_type_double
,
1113 java_primitive_type_void
,
1114 nr_java_primitive_types
1118 java_language_arch_info (struct gdbarch
*gdbarch
,
1119 struct language_arch_info
*lai
)
1121 const struct builtin_java_type
*builtin
= builtin_java_type (gdbarch
);
1123 lai
->string_char_type
= builtin
->builtin_char
;
1124 lai
->primitive_type_vector
1125 = GDBARCH_OBSTACK_CALLOC (gdbarch
, nr_java_primitive_types
+ 1,
1127 lai
->primitive_type_vector
[java_primitive_type_int
]
1128 = builtin
->builtin_int
;
1129 lai
->primitive_type_vector
[java_primitive_type_short
]
1130 = builtin
->builtin_short
;
1131 lai
->primitive_type_vector
[java_primitive_type_long
]
1132 = builtin
->builtin_long
;
1133 lai
->primitive_type_vector
[java_primitive_type_byte
]
1134 = builtin
->builtin_byte
;
1135 lai
->primitive_type_vector
[java_primitive_type_boolean
]
1136 = builtin
->builtin_boolean
;
1137 lai
->primitive_type_vector
[java_primitive_type_char
]
1138 = builtin
->builtin_char
;
1139 lai
->primitive_type_vector
[java_primitive_type_float
]
1140 = builtin
->builtin_float
;
1141 lai
->primitive_type_vector
[java_primitive_type_double
]
1142 = builtin
->builtin_double
;
1143 lai
->primitive_type_vector
[java_primitive_type_void
]
1144 = builtin
->builtin_void
;
1146 lai
->bool_type_symbol
= "boolean";
1147 lai
->bool_type_default
= builtin
->builtin_boolean
;
1150 const struct exp_descriptor exp_descriptor_java
=
1152 print_subexp_standard
,
1153 operator_length_standard
,
1154 operator_check_standard
,
1156 dump_subexp_body_standard
,
1157 evaluate_subexp_java
1160 const struct language_defn java_language_defn
=
1162 "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
,
1201 build_java_types (struct gdbarch
*gdbarch
)
1203 struct builtin_java_type
*builtin_java_type
1204 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_java_type
);
1206 builtin_java_type
->builtin_int
1207 = arch_integer_type (gdbarch
, 32, 0, "int");
1208 builtin_java_type
->builtin_short
1209 = arch_integer_type (gdbarch
, 16, 0, "short");
1210 builtin_java_type
->builtin_long
1211 = arch_integer_type (gdbarch
, 64, 0, "long");
1212 builtin_java_type
->builtin_byte
1213 = arch_integer_type (gdbarch
, 8, 0, "byte");
1214 builtin_java_type
->builtin_boolean
1215 = arch_boolean_type (gdbarch
, 8, 0, "boolean");
1216 builtin_java_type
->builtin_char
1217 = arch_character_type (gdbarch
, 16, 1, "char");
1218 builtin_java_type
->builtin_float
1219 = arch_float_type (gdbarch
, 32, "float", NULL
);
1220 builtin_java_type
->builtin_double
1221 = arch_float_type (gdbarch
, 64, "double", NULL
);
1222 builtin_java_type
->builtin_void
1223 = arch_type (gdbarch
, TYPE_CODE_VOID
, 1, "void");
1225 return builtin_java_type
;
1228 static struct gdbarch_data
*java_type_data
;
1230 const struct builtin_java_type
*
1231 builtin_java_type (struct gdbarch
*gdbarch
)
1233 return gdbarch_data (gdbarch
, java_type_data
);
1237 _initialize_java_language (void)
1239 jv_dynamics_objfile_data_key
1240 = register_objfile_data_with_cleanup (NULL
, jv_per_objfile_free
);
1241 jv_dynamics_progspace_key
= register_program_space_data ();
1243 java_type_data
= gdbarch_data_register_post_init (build_java_types
);
1245 add_language (&java_language_defn
);