1 /* Java language support routines for GDB, the GNU debugger.
3 Copyright (C) 1997-2000, 2003-2005, 2007-2012 Free Software
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include "expression.h"
25 #include "parser-defs.h"
31 #include "gdb_string.h"
38 #include "dictionary.h"
40 #include "gdb_assert.h"
46 extern void _initialize_java_language (void);
48 static int java_demangled_signature_length (char *);
49 static void java_demangled_signature_copy (char *, char *);
51 static struct symtab
*get_java_class_symtab (struct gdbarch
*gdbarch
);
52 static char *get_java_utf8_name (struct obstack
*obstack
, struct value
*name
);
53 static int java_class_is_primitive (struct value
*clas
);
54 static struct value
*java_value_string (char *ptr
, int len
);
56 static void java_emit_char (int c
, struct type
*type
,
57 struct ui_file
* stream
, int quoter
);
59 static char *java_class_name_from_physname (const char *physname
);
61 static const struct objfile_data
*jv_dynamics_objfile_data_key
;
63 /* The dynamic objfile is kept per-program-space. This key lets us
64 associate the objfile with the program space. */
66 static const struct program_space_data
*jv_dynamics_progspace_key
;
68 static struct type
*java_link_class_type (struct gdbarch
*,
69 struct type
*, struct value
*);
71 /* An instance of this structure is used to store some data that must
74 struct jv_per_objfile_data
76 /* The expandable dictionary we use. */
77 struct dictionary
*dict
;
80 /* A function called when the dynamics_objfile is freed. We use this
81 to clean up some internal state. */
83 jv_per_objfile_free (struct objfile
*objfile
, void *data
)
85 struct jv_per_objfile_data
*jv_data
= data
;
86 struct objfile
*dynamics_objfile
;
88 dynamics_objfile
= program_space_data (current_program_space
,
89 jv_dynamics_progspace_key
);
90 gdb_assert (objfile
== dynamics_objfile
);
93 dict_free (jv_data
->dict
);
96 set_program_space_data (current_program_space
,
97 jv_dynamics_progspace_key
,
101 /* FIXME: carlton/2003-02-04: This is the main or only caller of
102 allocate_objfile with first argument NULL; as a result, this code
103 breaks every so often. Somebody should write a test case that
104 exercises GDB in various ways (e.g. something involving loading a
105 dynamic library) after this code has been called. */
107 static struct objfile
*
108 get_dynamics_objfile (struct gdbarch
*gdbarch
)
110 struct objfile
*dynamics_objfile
;
112 dynamics_objfile
= program_space_data (current_program_space
,
113 jv_dynamics_progspace_key
);
115 if (dynamics_objfile
== NULL
)
117 struct jv_per_objfile_data
*data
;
119 /* Mark it as shared so that it is cleared when the inferior is
121 dynamics_objfile
= allocate_objfile (NULL
, OBJF_SHARED
);
122 dynamics_objfile
->gdbarch
= gdbarch
;
124 data
= XCNEW (struct jv_per_objfile_data
);
125 set_objfile_data (dynamics_objfile
, jv_dynamics_objfile_data_key
, data
);
127 set_program_space_data (current_program_space
,
128 jv_dynamics_progspace_key
,
131 return dynamics_objfile
;
134 static struct symtab
*
135 get_java_class_symtab (struct gdbarch
*gdbarch
)
137 struct objfile
*objfile
= get_dynamics_objfile (gdbarch
);
138 struct symtab
*class_symtab
= objfile
->symtabs
;
140 if (class_symtab
== NULL
)
142 struct blockvector
*bv
;
144 struct jv_per_objfile_data
*jv_data
;
146 class_symtab
= allocate_symtab ("<java-classes>", objfile
);
147 class_symtab
->language
= language_java
;
148 bv
= (struct blockvector
*)
149 obstack_alloc (&objfile
->objfile_obstack
,
150 sizeof (struct blockvector
) + sizeof (struct block
*));
151 BLOCKVECTOR_NBLOCKS (bv
) = 1;
152 BLOCKVECTOR (class_symtab
) = bv
;
154 /* Allocate dummy STATIC_BLOCK. */
155 bl
= allocate_block (&objfile
->objfile_obstack
);
156 BLOCK_DICT (bl
) = dict_create_linear (&objfile
->objfile_obstack
,
158 BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
) = bl
;
160 /* Allocate GLOBAL_BLOCK. */
161 bl
= allocate_block (&objfile
->objfile_obstack
);
162 BLOCK_DICT (bl
) = dict_create_hashed_expandable ();
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
= (struct symbol
*)
189 obstack_alloc (&objfile
->objfile_obstack
, sizeof (struct symbol
));
190 memset (sym
, 0, sizeof (struct symbol
));
191 SYMBOL_SET_LANGUAGE (sym
, language_java
);
192 SYMBOL_SET_LINKAGE_NAME (sym
, TYPE_TAG_NAME (type
));
193 SYMBOL_CLASS (sym
) = LOC_TYPEDEF
;
194 /* SYMBOL_VALUE (sym) = valu; */
195 SYMBOL_TYPE (sym
) = type
;
196 SYMBOL_DOMAIN (sym
) = STRUCT_DOMAIN
;
197 SYMBOL_VALUE_ADDRESS (sym
) = addr
;
202 java_lookup_class (char *name
)
206 sym
= lookup_symbol (name
, expression_context_block
, STRUCT_DOMAIN
, NULL
);
208 return SYMBOL_TYPE (sym
);
209 /* FIXME - should search inferior's symbol table. */
213 /* Return a nul-terminated string (allocated on OBSTACK) for
214 a name given by NAME (which has type Utf8Const*). */
217 get_java_utf8_name (struct obstack
*obstack
, struct value
*name
)
220 struct value
*temp
= name
;
224 temp
= value_struct_elt (&temp
, NULL
, "length", NULL
, "structure");
225 name_length
= (int) value_as_long (temp
);
226 data_addr
= value_address (temp
) + TYPE_LENGTH (value_type (temp
));
227 chrs
= obstack_alloc (obstack
, name_length
+ 1);
228 chrs
[name_length
] = '\0';
229 read_memory (data_addr
, (gdb_byte
*) chrs
, name_length
);
234 java_class_from_object (struct value
*obj_val
)
236 /* This is all rather inefficient, since the offsets of vtable and
237 class are fixed. FIXME */
238 struct value
*vtable_val
;
240 if (TYPE_CODE (value_type (obj_val
)) == TYPE_CODE_PTR
241 && TYPE_LENGTH (TYPE_TARGET_TYPE (value_type (obj_val
))) == 0)
242 obj_val
= value_at (get_java_object_type (),
243 value_as_address (obj_val
));
245 vtable_val
= value_struct_elt (&obj_val
, NULL
, "vtable", NULL
, "structure");
246 return value_struct_elt (&vtable_val
, NULL
, "class", NULL
, "structure");
249 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
251 java_class_is_primitive (struct value
*clas
)
253 struct value
*vtable
= value_struct_elt (&clas
, NULL
, "vtable",
255 CORE_ADDR i
= value_as_address (vtable
);
257 return (int) (i
& 0x7fffffff) == (int) 0x7fffffff;
260 /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
263 type_from_class (struct gdbarch
*gdbarch
, struct value
*clas
)
268 struct objfile
*objfile
;
269 struct value
*utf8_name
;
274 type
= check_typedef (value_type (clas
));
275 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
277 if (value_logical_not (clas
))
279 clas
= value_ind (clas
);
281 addr
= value_address (clas
);
283 objfile
= get_dynamics_objfile (gdbarch
);
284 if (java_class_is_primitive (clas
))
289 sig
= value_struct_elt (&temp
, NULL
, "method_count", NULL
, "structure");
290 return java_primitive_type (gdbarch
, value_as_long (sig
));
293 /* Get Class name. */
294 /* If clasloader non-null, prepend loader address. FIXME */
296 utf8_name
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
297 name
= get_java_utf8_name (&objfile
->objfile_obstack
, utf8_name
);
298 for (nptr
= name
; *nptr
!= 0; nptr
++)
304 type
= java_lookup_class (name
);
308 type
= alloc_type (objfile
);
309 TYPE_CODE (type
) = TYPE_CODE_STRUCT
;
310 INIT_CPLUS_SPECIFIC (type
);
314 char *signature
= name
;
315 int namelen
= java_demangled_signature_length (signature
);
317 if (namelen
> strlen (name
))
318 name
= obstack_alloc (&objfile
->objfile_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 deprecated_set_value_type (temp
,
326 lookup_pointer_type (value_type (clas
)));
327 TYPE_TARGET_TYPE (type
) = type_from_class (gdbarch
, temp
);
330 ALLOCATE_CPLUS_STRUCT_TYPE (type
);
331 TYPE_TAG_NAME (type
) = name
;
333 add_class_symtab_symbol (add_class_symbol (type
, addr
));
334 return java_link_class_type (gdbarch
, type
, clas
);
337 /* Fill in class TYPE with data from the CLAS value. */
340 java_link_class_type (struct gdbarch
*gdbarch
,
341 struct type
*type
, struct value
*clas
)
344 char *unqualified_name
;
345 char *name
= TYPE_TAG_NAME (type
);
346 int ninterfaces
, nfields
, nmethods
;
347 int type_is_object
= 0;
348 struct fn_field
*fn_fields
;
349 struct fn_fieldlist
*fn_fieldlists
;
350 struct value
*fields
;
351 struct value
*methods
;
352 struct value
*method
= NULL
;
353 struct value
*field
= NULL
;
355 struct objfile
*objfile
= get_dynamics_objfile (gdbarch
);
358 gdb_assert (name
!= NULL
);
359 unqualified_name
= strrchr (name
, '.');
360 if (unqualified_name
== NULL
)
361 unqualified_name
= name
;
364 temp
= value_struct_elt (&temp
, NULL
, "superclass", NULL
, "structure");
365 if (strcmp (name
, "java.lang.Object") == 0)
367 tsuper
= get_java_object_type ();
368 if (tsuper
&& TYPE_CODE (tsuper
) == TYPE_CODE_PTR
)
369 tsuper
= TYPE_TARGET_TYPE (tsuper
);
373 tsuper
= type_from_class (gdbarch
, temp
);
379 ninterfaces
= value_as_long (value_struct_elt (&temp
, NULL
, "interface_len",
382 TYPE_N_BASECLASSES (type
) = (tsuper
== NULL
? 0 : 1) + ninterfaces
;
384 nfields
= value_as_long (value_struct_elt (&temp
, NULL
, "field_count",
386 nfields
+= TYPE_N_BASECLASSES (type
);
387 nfields
++; /* Add one for dummy "class" field. */
388 TYPE_NFIELDS (type
) = nfields
;
389 TYPE_FIELDS (type
) = (struct field
*)
390 TYPE_ALLOC (type
, sizeof (struct field
) * nfields
);
392 memset (TYPE_FIELDS (type
), 0, sizeof (struct field
) * nfields
);
394 TYPE_FIELD_PRIVATE_BITS (type
) =
395 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
396 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type
), nfields
);
398 TYPE_FIELD_PROTECTED_BITS (type
) =
399 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
400 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type
), nfields
);
402 TYPE_FIELD_IGNORE_BITS (type
) =
403 (B_TYPE
*) TYPE_ALLOC (type
, B_BYTES (nfields
));
404 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type
), nfields
);
406 TYPE_FIELD_VIRTUAL_BITS (type
) = (B_TYPE
*)
407 TYPE_ALLOC (type
, B_BYTES (TYPE_N_BASECLASSES (type
)));
408 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type
), TYPE_N_BASECLASSES (type
));
412 TYPE_BASECLASS (type
, 0) = tsuper
;
414 SET_TYPE_FIELD_PRIVATE (type
, 0);
418 if (i
> 2 && name
[i
- 1] == ']' && tsuper
!= NULL
)
421 TYPE_LENGTH (type
) = TYPE_LENGTH (tsuper
) + 4; /* size with "length" */
426 temp
= value_struct_elt (&temp
, NULL
, "size_in_bytes",
428 TYPE_LENGTH (type
) = value_as_long (temp
);
432 nfields
--; /* First set up dummy "class" field. */
433 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, nfields
), value_address (clas
));
434 TYPE_FIELD_NAME (type
, nfields
) = "class";
435 TYPE_FIELD_TYPE (type
, nfields
) = value_type (clas
);
436 SET_TYPE_FIELD_PRIVATE (type
, nfields
);
438 for (i
= TYPE_N_BASECLASSES (type
); i
< nfields
; i
++)
446 fields
= value_struct_elt (&temp
, NULL
, "fields", NULL
, "structure");
447 field
= value_ind (fields
);
450 { /* Re-use field value for next field. */
452 = value_address (field
) + TYPE_LENGTH (value_type (field
));
454 set_value_address (field
, addr
);
455 set_value_lazy (field
, 1);
458 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
459 TYPE_FIELD_NAME (type
, i
) =
460 get_java_utf8_name (&objfile
->objfile_obstack
, temp
);
462 accflags
= value_as_long (value_struct_elt (&temp
, NULL
, "accflags",
465 temp
= value_struct_elt (&temp
, NULL
, "info", NULL
, "structure");
466 boffset
= value_as_long (value_struct_elt (&temp
, NULL
, "boffset",
468 if (accflags
& 0x0001) /* public access */
472 if (accflags
& 0x0002) /* private access */
474 SET_TYPE_FIELD_PRIVATE (type
, i
);
476 if (accflags
& 0x0004) /* protected access */
478 SET_TYPE_FIELD_PROTECTED (type
, i
);
480 if (accflags
& 0x0008) /* ACC_STATIC */
481 SET_FIELD_PHYSADDR (TYPE_FIELD (type
, i
), boffset
);
483 TYPE_FIELD_BITPOS (type
, i
) = 8 * boffset
;
484 if (accflags
& 0x8000) /* FIELD_UNRESOLVED_FLAG */
486 TYPE_FIELD_TYPE (type
, i
) = get_java_object_type (); /* FIXME */
493 temp
= value_struct_elt (&temp
, NULL
, "type", NULL
, "structure");
494 ftype
= type_from_class (gdbarch
, temp
);
495 if (TYPE_CODE (ftype
) == TYPE_CODE_STRUCT
)
496 ftype
= lookup_pointer_type (ftype
);
497 TYPE_FIELD_TYPE (type
, i
) = ftype
;
502 nmethods
= value_as_long (value_struct_elt (&temp
, NULL
, "method_count",
504 j
= nmethods
* sizeof (struct fn_field
);
505 fn_fields
= (struct fn_field
*)
506 obstack_alloc (&objfile
->objfile_obstack
, j
);
507 memset (fn_fields
, 0, j
);
508 fn_fieldlists
= (struct fn_fieldlist
*)
509 alloca (nmethods
* sizeof (struct fn_fieldlist
));
512 for (i
= 0; i
< nmethods
; i
++)
520 methods
= value_struct_elt (&temp
, NULL
, "methods",
522 method
= value_ind (methods
);
525 { /* Re-use method value for next method. */
527 = value_address (method
) + TYPE_LENGTH (value_type (method
));
529 set_value_address (method
, addr
);
530 set_value_lazy (method
, 1);
533 /* Get method name. */
535 temp
= value_struct_elt (&temp
, NULL
, "name", NULL
, "structure");
536 mname
= get_java_utf8_name (&objfile
->objfile_obstack
, temp
);
537 if (strcmp (mname
, "<init>") == 0)
538 mname
= unqualified_name
;
540 /* Check for an existing method with the same name.
541 * This makes building the fn_fieldslists an O(nmethods**2)
542 * operation. That could be using hashing, but I doubt it
543 * is worth it. Note that we do maintain the order of methods
544 * in the inferior's Method table (as long as that is grouped
545 * by method name), which I think is desirable. --PB */
546 for (k
= 0, j
= TYPE_NFN_FIELDS (type
);;)
549 { /* No match - new method name. */
550 j
= TYPE_NFN_FIELDS (type
)++;
551 fn_fieldlists
[j
].name
= mname
;
552 fn_fieldlists
[j
].length
= 1;
553 fn_fieldlists
[j
].fn_fields
= &fn_fields
[i
];
557 if (strcmp (mname
, fn_fieldlists
[j
].name
) == 0)
558 { /* Found an existing method with the same name. */
561 if (mname
!= unqualified_name
)
562 obstack_free (&objfile
->objfile_obstack
, mname
);
563 mname
= fn_fieldlists
[j
].name
;
564 fn_fieldlists
[j
].length
++;
565 k
= i
- k
; /* Index of new slot. */
566 /* Shift intervening fn_fields (between k and i) down. */
567 for (l
= i
; l
> k
; l
--)
568 fn_fields
[l
] = fn_fields
[l
- 1];
569 for (l
= TYPE_NFN_FIELDS (type
); --l
> j
;)
570 fn_fieldlists
[l
].fn_fields
++;
573 k
+= fn_fieldlists
[j
].length
;
575 fn_fields
[k
].physname
= "";
576 fn_fields
[k
].is_stub
= 1;
578 fn_fields
[k
].type
= lookup_function_type
579 (builtin_java_type (gdbarch
)->builtin_void
);
580 TYPE_CODE (fn_fields
[k
].type
) = TYPE_CODE_METHOD
;
583 j
= TYPE_NFN_FIELDS (type
) * sizeof (struct fn_fieldlist
);
584 TYPE_FN_FIELDLISTS (type
) = (struct fn_fieldlist
*)
585 obstack_alloc (&objfile
->objfile_obstack
, j
);
586 memcpy (TYPE_FN_FIELDLISTS (type
), fn_fieldlists
, j
);
592 get_java_object_type (void)
596 sym
= lookup_symbol ("java.lang.Object", NULL
, STRUCT_DOMAIN
, NULL
);
598 error (_("cannot find java.lang.Object"));
599 return SYMBOL_TYPE (sym
);
603 get_java_object_header_size (struct gdbarch
*gdbarch
)
605 struct type
*objtype
= get_java_object_type ();
608 return (2 * gdbarch_ptr_bit (gdbarch
) / TARGET_CHAR_BIT
);
610 return TYPE_LENGTH (objtype
);
614 is_object_type (struct type
*type
)
616 CHECK_TYPEDEF (type
);
617 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
619 struct type
*ttype
= check_typedef (TYPE_TARGET_TYPE (type
));
621 if (TYPE_CODE (ttype
) != TYPE_CODE_STRUCT
)
623 while (TYPE_N_BASECLASSES (ttype
) > 0)
624 ttype
= TYPE_BASECLASS (ttype
, 0);
625 name
= TYPE_TAG_NAME (ttype
);
626 if (name
!= NULL
&& strcmp (name
, "java.lang.Object") == 0)
629 = TYPE_NFIELDS (ttype
) > 0 ? TYPE_FIELD_NAME (ttype
, 0) : (char *) 0;
630 if (name
!= NULL
&& strcmp (name
, "vtable") == 0)
637 java_primitive_type (struct gdbarch
*gdbarch
, int signature
)
639 const struct builtin_java_type
*builtin
= builtin_java_type (gdbarch
);
644 return builtin
->builtin_byte
;
646 return builtin
->builtin_short
;
648 return builtin
->builtin_int
;
650 return builtin
->builtin_long
;
652 return builtin
->builtin_boolean
;
654 return builtin
->builtin_char
;
656 return builtin
->builtin_float
;
658 return builtin
->builtin_double
;
660 return builtin
->builtin_void
;
662 error (_("unknown signature '%c' for primitive type"), (char) signature
);
665 /* If name[0 .. namelen-1] is the name of a primitive Java type,
666 return that type. Otherwise, return NULL. */
669 java_primitive_type_from_name (struct gdbarch
*gdbarch
,
670 char *name
, int namelen
)
672 const struct builtin_java_type
*builtin
= builtin_java_type (gdbarch
);
677 if (namelen
== 4 && memcmp (name
, "byte", 4) == 0)
678 return builtin
->builtin_byte
;
679 if (namelen
== 7 && memcmp (name
, "boolean", 7) == 0)
680 return builtin
->builtin_boolean
;
683 if (namelen
== 4 && memcmp (name
, "char", 4) == 0)
684 return builtin
->builtin_char
;
687 if (namelen
== 6 && memcmp (name
, "double", 6) == 0)
688 return builtin
->builtin_double
;
691 if (namelen
== 5 && memcmp (name
, "float", 5) == 0)
692 return builtin
->builtin_float
;
695 if (namelen
== 3 && memcmp (name
, "int", 3) == 0)
696 return builtin
->builtin_int
;
699 if (namelen
== 4 && memcmp (name
, "long", 4) == 0)
700 return builtin
->builtin_long
;
703 if (namelen
== 5 && memcmp (name
, "short", 5) == 0)
704 return builtin
->builtin_short
;
707 if (namelen
== 4 && memcmp (name
, "void", 4) == 0)
708 return builtin
->builtin_void
;
715 java_primitive_type_name (int signature
)
738 error (_("unknown signature '%c' for primitive type"), (char) signature
);
741 /* Return the length (in bytes) of demangled name of the Java type
742 signature string SIGNATURE. */
745 java_demangled_signature_length (char *signature
)
749 for (; *signature
== '['; signature
++)
750 array
+= 2; /* Two chars for "[]". */
751 switch (signature
[0])
754 /* Subtract 2 for 'L' and ';'. */
755 return strlen (signature
) - 2 + array
;
757 return strlen (java_primitive_type_name (signature
[0])) + array
;
761 /* Demangle the Java type signature SIGNATURE, leaving the result in
765 java_demangled_signature_copy (char *result
, char *signature
)
771 while (*signature
== '[')
776 switch (signature
[0])
779 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
782 for (; *signature
!= ';' && *signature
!= '\0'; signature
++)
784 if (*signature
== '/')
791 ptr
= java_primitive_type_name (signature
[0]);
793 strcpy (result
, ptr
);
804 /* Return the demangled name of the Java type signature string SIGNATURE,
805 as a freshly allocated copy. */
808 java_demangle_type_signature (char *signature
)
810 int length
= java_demangled_signature_length (signature
);
811 char *result
= xmalloc (length
+ 1);
813 java_demangled_signature_copy (result
, signature
);
814 result
[length
] = '\0';
818 /* Return the type of TYPE followed by DIMS pairs of [ ].
819 If DIMS == 0, TYPE is returned. */
822 java_array_type (struct type
*type
, int dims
)
826 /* FIXME This is bogus! Java arrays are not gdb arrays! */
827 type
= lookup_array_range_type (type
, 0, 0);
833 /* Create a Java string in the inferior from a (Utf8) literal. */
835 static struct value
*
836 java_value_string (char *ptr
, int len
)
838 error (_("not implemented - java_value_string")); /* FIXME */
841 /* Return the encoding that should be used for the character type
845 java_get_encoding (struct type
*type
)
847 struct gdbarch
*arch
= get_type_arch (type
);
848 const char *encoding
;
850 if (type
== builtin_java_type (arch
)->builtin_char
)
852 if (gdbarch_byte_order (arch
) == BFD_ENDIAN_BIG
)
853 encoding
= "UTF-16BE";
855 encoding
= "UTF-16LE";
858 encoding
= target_charset (arch
);
863 /* Print the character C on STREAM as part of the contents of a literal
864 string whose delimiter is QUOTER. Note that that format for printing
865 characters and strings is language specific. */
868 java_emit_char (int c
, struct type
*type
, struct ui_file
*stream
, int quoter
)
870 const char *encoding
= java_get_encoding (type
);
872 generic_emit_char (c
, type
, stream
, quoter
, encoding
);
875 /* Implementation of la_printchar method. */
878 java_printchar (int c
, struct type
*type
, struct ui_file
*stream
)
880 fputs_filtered ("'", stream
);
881 LA_EMIT_CHAR (c
, type
, stream
, '\'');
882 fputs_filtered ("'", stream
);
885 /* Implementation of la_printstr method. */
888 java_printstr (struct ui_file
*stream
, struct type
*type
,
889 const gdb_byte
*string
,
890 unsigned int length
, const char *encoding
, int force_ellipses
,
891 const struct value_print_options
*options
)
893 const char *type_encoding
= java_get_encoding (type
);
895 if (!encoding
|| !*encoding
)
896 encoding
= type_encoding
;
898 generic_printstr (stream
, type
, string
, length
, encoding
,
899 force_ellipses
, '"', 0, options
);
902 static struct value
*
903 evaluate_subexp_java (struct type
*expect_type
, struct expression
*exp
,
904 int *pos
, enum noside noside
)
909 enum exp_opcode op
= exp
->elts
[*pos
].opcode
;
917 if (noside
== EVAL_SKIP
)
920 arg1
= evaluate_subexp_java (NULL_TYPE
, exp
, pos
, EVAL_NORMAL
);
921 if (is_object_type (value_type (arg1
)))
925 type
= type_from_class (exp
->gdbarch
, java_class_from_object (arg1
));
926 arg1
= value_cast (lookup_pointer_type (type
), arg1
);
928 return value_ind (arg1
);
930 case BINOP_SUBSCRIPT
:
932 arg1
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
933 arg2
= evaluate_subexp_with_coercion (exp
, pos
, noside
);
934 if (noside
== EVAL_SKIP
)
936 /* If the user attempts to subscript something that is not an
937 array or pointer type (like a plain int variable for example),
938 then report this as an error. */
940 arg1
= coerce_ref (arg1
);
941 type
= check_typedef (value_type (arg1
));
942 if (TYPE_CODE (type
) == TYPE_CODE_PTR
)
943 type
= check_typedef (TYPE_TARGET_TYPE (type
));
944 name
= TYPE_NAME (type
);
946 name
= TYPE_TAG_NAME (type
);
947 i
= name
== NULL
? 0 : strlen (name
);
948 if (TYPE_CODE (type
) == TYPE_CODE_STRUCT
949 && i
> 2 && name
[i
- 1] == ']')
951 enum bfd_endian byte_order
= gdbarch_byte_order (exp
->gdbarch
);
954 struct type
*el_type
;
957 struct value
*clas
= java_class_from_object (arg1
);
958 struct value
*temp
= clas
;
959 /* Get CLASS_ELEMENT_TYPE of the array type. */
960 temp
= value_struct_elt (&temp
, NULL
, "methods",
962 deprecated_set_value_type (temp
, value_type (clas
));
963 el_type
= type_from_class (exp
->gdbarch
, temp
);
964 if (TYPE_CODE (el_type
) == TYPE_CODE_STRUCT
)
965 el_type
= lookup_pointer_type (el_type
);
967 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
968 return value_zero (el_type
, VALUE_LVAL (arg1
));
969 address
= value_as_address (arg1
);
970 address
+= get_java_object_header_size (exp
->gdbarch
);
971 read_memory (address
, buf4
, 4);
972 length
= (long) extract_signed_integer (buf4
, 4, byte_order
);
973 index
= (long) value_as_long (arg2
);
974 if (index
>= length
|| index
< 0)
975 error (_("array index (%ld) out of bounds (length: %ld)"),
977 address
= (address
+ 4) + index
* TYPE_LENGTH (el_type
);
978 return value_at (el_type
, address
);
980 else if (TYPE_CODE (type
) == TYPE_CODE_ARRAY
)
982 if (noside
== EVAL_AVOID_SIDE_EFFECTS
)
983 return value_zero (TYPE_TARGET_TYPE (type
), VALUE_LVAL (arg1
));
985 return value_subscript (arg1
, value_as_long (arg2
));
988 error (_("cannot subscript something of type `%s'"), name
);
990 error (_("cannot subscript requested type"));
994 i
= longest_to_int (exp
->elts
[pc
+ 1].longconst
);
995 (*pos
) += 3 + BYTES_TO_EXP_ELEM (i
+ 1);
996 if (noside
== EVAL_SKIP
)
998 return java_value_string (&exp
->elts
[pc
+ 2].string
, i
);
1001 arg1
= evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
1002 /* Convert object field (such as TYPE.class) to reference. */
1003 if (TYPE_CODE (value_type (arg1
)) == TYPE_CODE_STRUCT
)
1004 arg1
= value_addr (arg1
);
1010 return evaluate_subexp_standard (expect_type
, exp
, pos
, noside
);
1012 return value_from_longest (builtin_type (exp
->gdbarch
)->builtin_int
, 1);
1015 static char *java_demangle (const char *mangled
, int options
)
1017 return cplus_demangle (mangled
, options
| DMGL_JAVA
);
1020 /* Find the member function name of the demangled name NAME. NAME
1021 must be a method name including arguments, in order to correctly
1022 locate the last component.
1024 This function return a pointer to the first dot before the
1025 member function name, or NULL if the name was not of the
1029 java_find_last_component (const char *name
)
1033 /* Find argument list. */
1034 p
= strchr (name
, '(');
1039 /* Back up and find first dot prior to argument list. */
1040 while (p
> name
&& *p
!= '.')
1049 /* Return the name of the class containing method PHYSNAME. */
1052 java_class_name_from_physname (const char *physname
)
1056 char *demangled_name
= java_demangle (physname
, DMGL_PARAMS
| DMGL_ANSI
);
1058 if (demangled_name
== NULL
)
1061 end
= java_find_last_component (demangled_name
);
1064 ret
= xmalloc (end
- demangled_name
+ 1);
1065 memcpy (ret
, demangled_name
, end
- demangled_name
);
1066 ret
[end
- demangled_name
] = '\0';
1069 xfree (demangled_name
);
1073 /* Table mapping opcodes into strings for printing operators
1074 and precedences of the operators. */
1076 const struct op_print java_op_print_tab
[] =
1078 {",", BINOP_COMMA
, PREC_COMMA
, 0},
1079 {"=", BINOP_ASSIGN
, PREC_ASSIGN
, 1},
1080 {"||", BINOP_LOGICAL_OR
, PREC_LOGICAL_OR
, 0},
1081 {"&&", BINOP_LOGICAL_AND
, PREC_LOGICAL_AND
, 0},
1082 {"|", BINOP_BITWISE_IOR
, PREC_BITWISE_IOR
, 0},
1083 {"^", BINOP_BITWISE_XOR
, PREC_BITWISE_XOR
, 0},
1084 {"&", BINOP_BITWISE_AND
, PREC_BITWISE_AND
, 0},
1085 {"==", BINOP_EQUAL
, PREC_EQUAL
, 0},
1086 {"!=", BINOP_NOTEQUAL
, PREC_EQUAL
, 0},
1087 {"<=", BINOP_LEQ
, PREC_ORDER
, 0},
1088 {">=", BINOP_GEQ
, PREC_ORDER
, 0},
1089 {">", BINOP_GTR
, PREC_ORDER
, 0},
1090 {"<", BINOP_LESS
, PREC_ORDER
, 0},
1091 {">>", BINOP_RSH
, PREC_SHIFT
, 0},
1092 {"<<", BINOP_LSH
, PREC_SHIFT
, 0},
1093 {"+", BINOP_ADD
, PREC_ADD
, 0},
1094 {"-", BINOP_SUB
, PREC_ADD
, 0},
1095 {"*", BINOP_MUL
, PREC_MUL
, 0},
1096 {"/", BINOP_DIV
, PREC_MUL
, 0},
1097 {"%", BINOP_REM
, PREC_MUL
, 0},
1098 {"-", UNOP_NEG
, PREC_PREFIX
, 0},
1099 {"!", UNOP_LOGICAL_NOT
, PREC_PREFIX
, 0},
1100 {"~", UNOP_COMPLEMENT
, PREC_PREFIX
, 0},
1101 {"*", UNOP_IND
, PREC_PREFIX
, 0},
1102 {"++", UNOP_PREINCREMENT
, PREC_PREFIX
, 0},
1103 {"--", UNOP_PREDECREMENT
, PREC_PREFIX
, 0},
1107 enum java_primitive_types
1109 java_primitive_type_int
,
1110 java_primitive_type_short
,
1111 java_primitive_type_long
,
1112 java_primitive_type_byte
,
1113 java_primitive_type_boolean
,
1114 java_primitive_type_char
,
1115 java_primitive_type_float
,
1116 java_primitive_type_double
,
1117 java_primitive_type_void
,
1118 nr_java_primitive_types
1122 java_language_arch_info (struct gdbarch
*gdbarch
,
1123 struct language_arch_info
*lai
)
1125 const struct builtin_java_type
*builtin
= builtin_java_type (gdbarch
);
1127 lai
->string_char_type
= builtin
->builtin_char
;
1128 lai
->primitive_type_vector
1129 = GDBARCH_OBSTACK_CALLOC (gdbarch
, nr_java_primitive_types
+ 1,
1131 lai
->primitive_type_vector
[java_primitive_type_int
]
1132 = builtin
->builtin_int
;
1133 lai
->primitive_type_vector
[java_primitive_type_short
]
1134 = builtin
->builtin_short
;
1135 lai
->primitive_type_vector
[java_primitive_type_long
]
1136 = builtin
->builtin_long
;
1137 lai
->primitive_type_vector
[java_primitive_type_byte
]
1138 = builtin
->builtin_byte
;
1139 lai
->primitive_type_vector
[java_primitive_type_boolean
]
1140 = builtin
->builtin_boolean
;
1141 lai
->primitive_type_vector
[java_primitive_type_char
]
1142 = builtin
->builtin_char
;
1143 lai
->primitive_type_vector
[java_primitive_type_float
]
1144 = builtin
->builtin_float
;
1145 lai
->primitive_type_vector
[java_primitive_type_double
]
1146 = builtin
->builtin_double
;
1147 lai
->primitive_type_vector
[java_primitive_type_void
]
1148 = builtin
->builtin_void
;
1150 lai
->bool_type_symbol
= "boolean";
1151 lai
->bool_type_default
= builtin
->builtin_boolean
;
1154 const struct exp_descriptor exp_descriptor_java
=
1156 print_subexp_standard
,
1157 operator_length_standard
,
1158 operator_check_standard
,
1160 dump_subexp_body_standard
,
1161 evaluate_subexp_java
1164 const struct language_defn java_language_defn
=
1166 "java", /* Language name */
1173 &exp_descriptor_java
,
1177 java_printchar
, /* Print a character constant */
1178 java_printstr
, /* Function to print string constant */
1179 java_emit_char
, /* Function to print a single character */
1180 java_print_type
, /* Print a type using appropriate syntax */
1181 default_print_typedef
, /* Print a typedef using appropriate syntax */
1182 java_val_print
, /* Print a value using appropriate syntax */
1183 java_value_print
, /* Print a top-level value */
1184 NULL
, /* Language specific skip_trampoline */
1185 "this", /* name_of_this */
1186 basic_lookup_symbol_nonlocal
, /* lookup_symbol_nonlocal */
1187 basic_lookup_transparent_type
,/* lookup_transparent_type */
1188 java_demangle
, /* Language specific symbol demangler */
1189 java_class_name_from_physname
,/* Language specific class name */
1190 java_op_print_tab
, /* expression operators for printing */
1191 0, /* not c-style arrays */
1192 0, /* String lower bound */
1193 default_word_break_characters
,
1194 default_make_symbol_completion_list
,
1195 java_language_arch_info
,
1196 default_print_array_index
,
1197 default_pass_by_reference
,
1199 NULL
, /* la_get_symbol_name_match_p */
1200 iterate_over_symbols
,
1205 build_java_types (struct gdbarch
*gdbarch
)
1207 struct builtin_java_type
*builtin_java_type
1208 = GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct builtin_java_type
);
1210 builtin_java_type
->builtin_int
1211 = arch_integer_type (gdbarch
, 32, 0, "int");
1212 builtin_java_type
->builtin_short
1213 = arch_integer_type (gdbarch
, 16, 0, "short");
1214 builtin_java_type
->builtin_long
1215 = arch_integer_type (gdbarch
, 64, 0, "long");
1216 builtin_java_type
->builtin_byte
1217 = arch_integer_type (gdbarch
, 8, 0, "byte");
1218 builtin_java_type
->builtin_boolean
1219 = arch_boolean_type (gdbarch
, 8, 0, "boolean");
1220 builtin_java_type
->builtin_char
1221 = arch_character_type (gdbarch
, 16, 1, "char");
1222 builtin_java_type
->builtin_float
1223 = arch_float_type (gdbarch
, 32, "float", NULL
);
1224 builtin_java_type
->builtin_double
1225 = arch_float_type (gdbarch
, 64, "double", NULL
);
1226 builtin_java_type
->builtin_void
1227 = arch_type (gdbarch
, TYPE_CODE_VOID
, 1, "void");
1229 return builtin_java_type
;
1232 static struct gdbarch_data
*java_type_data
;
1234 const struct builtin_java_type
*
1235 builtin_java_type (struct gdbarch
*gdbarch
)
1237 return gdbarch_data (gdbarch
, java_type_data
);
1241 _initialize_java_language (void)
1243 jv_dynamics_objfile_data_key
1244 = register_objfile_data_with_cleanup (NULL
, jv_per_objfile_free
);
1245 jv_dynamics_progspace_key
= register_program_space_data ();
1247 java_type_data
= gdbarch_data_register_post_init (build_java_types
);
1249 add_language (&java_language_defn
);