1 /* Java language support routines for GDB, the GNU debugger.
3 Copyright (C) 1997, 1998, 1999, 2000, 2003, 2004, 2005, 2007, 2008, 2009,
4 2010 Free Software Foundation, Inc.
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"
44 extern void _initialize_java_language (void);
46 static int java_demangled_signature_length (char *);
47 static void java_demangled_signature_copy (char *, char *);
49 static struct symtab *get_java_class_symtab (struct gdbarch *gdbarch);
50 static char *get_java_utf8_name (struct obstack *obstack, struct value *name);
51 static int java_class_is_primitive (struct value *clas);
52 static struct value *java_value_string (char *ptr, int len);
54 static void java_emit_char (int c, struct type *type,
55 struct ui_file * stream, int quoter);
57 static char *java_class_name_from_physname (const char *physname);
59 static const struct objfile_data *jv_dynamics_objfile_data_key;
60 static const struct objfile_data *jv_type_objfile_data_key;
62 /* This objfile contains symtabs that have been dynamically created
63 to record dynamically loaded Java classes and dynamically
64 compiled java methods. */
66 static struct objfile *dynamics_objfile = NULL;
68 /* symtab contains classes read from the inferior. */
70 static struct symtab *class_symtab = NULL;
72 static struct type *java_link_class_type (struct gdbarch *,
73 struct type *, struct value *);
75 /* A function called when the dynamics_objfile is freed. We use this
76 to clean up some internal state. */
78 jv_per_objfile_free (struct objfile *objfile, void *ignore)
80 gdb_assert (objfile == dynamics_objfile);
81 /* Clean up all our cached state. These objects are all allocated
82 in the dynamics_objfile, so we don't need to actually free
84 dynamics_objfile = NULL;
88 /* FIXME: carlton/2003-02-04: This is the main or only caller of
89 allocate_objfile with first argument NULL; as a result, this code
90 breaks every so often. Somebody should write a test case that
91 exercises GDB in various ways (e.g. something involving loading a
92 dynamic library) after this code has been called. */
94 static struct objfile *
95 get_dynamics_objfile (struct gdbarch *gdbarch)
97 if (dynamics_objfile == NULL)
99 /* Mark it as shared so that it is cleared when the inferior is
101 dynamics_objfile = allocate_objfile (NULL, OBJF_SHARED);
102 dynamics_objfile->gdbarch = gdbarch;
103 /* We don't have any data to store, but this lets us get a
104 notification when the objfile is destroyed. Since we have to
105 store a non-NULL value, we just pick something arbitrary and
107 set_objfile_data (dynamics_objfile, jv_dynamics_objfile_data_key,
110 return dynamics_objfile;
113 static void free_class_block (struct symtab *symtab);
115 static struct symtab *
116 get_java_class_symtab (struct gdbarch *gdbarch)
118 if (class_symtab == NULL)
120 struct objfile *objfile = get_dynamics_objfile (gdbarch);
121 struct blockvector *bv;
124 class_symtab = allocate_symtab ("<java-classes>", objfile);
125 class_symtab->language = language_java;
126 bv = (struct blockvector *)
127 obstack_alloc (&objfile->objfile_obstack,
128 sizeof (struct blockvector) + sizeof (struct block *));
129 BLOCKVECTOR_NBLOCKS (bv) = 1;
130 BLOCKVECTOR (class_symtab) = bv;
132 /* Allocate dummy STATIC_BLOCK. */
133 bl = allocate_block (&objfile->objfile_obstack);
134 BLOCK_DICT (bl) = dict_create_linear (&objfile->objfile_obstack,
136 BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK) = bl;
138 /* Allocate GLOBAL_BLOCK. */
139 bl = allocate_block (&objfile->objfile_obstack);
140 BLOCK_DICT (bl) = dict_create_hashed_expandable ();
141 BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = bl;
142 class_symtab->free_func = free_class_block;
148 add_class_symtab_symbol (struct symbol *sym)
150 struct symtab *symtab
151 = get_java_class_symtab (get_objfile_arch (SYMBOL_SYMTAB (sym)->objfile));
152 struct blockvector *bv = BLOCKVECTOR (symtab);
154 dict_add_symbol (BLOCK_DICT (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)), sym);
157 static struct symbol *
158 add_class_symbol (struct type *type, CORE_ADDR addr)
162 sym = (struct symbol *)
163 obstack_alloc (&dynamics_objfile->objfile_obstack, sizeof (struct symbol));
164 memset (sym, 0, sizeof (struct symbol));
165 SYMBOL_LANGUAGE (sym) = language_java;
166 SYMBOL_SET_LINKAGE_NAME (sym, TYPE_TAG_NAME (type));
167 SYMBOL_CLASS (sym) = LOC_TYPEDEF;
168 /* SYMBOL_VALUE (sym) = valu; */
169 SYMBOL_TYPE (sym) = type;
170 SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN;
171 SYMBOL_VALUE_ADDRESS (sym) = addr;
175 /* Free the dynamic symbols block. */
177 free_class_block (struct symtab *symtab)
179 struct blockvector *bv = BLOCKVECTOR (symtab);
180 struct block *bl = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
182 dict_free (BLOCK_DICT (bl));
186 java_lookup_class (char *name)
190 sym = lookup_symbol (name, expression_context_block, STRUCT_DOMAIN, NULL);
192 return SYMBOL_TYPE (sym);
193 /* FIXME - should search inferior's symbol table. */
197 /* Return a nul-terminated string (allocated on OBSTACK) for
198 a name given by NAME (which has type Utf8Const*). */
201 get_java_utf8_name (struct obstack *obstack, struct value *name)
204 struct value *temp = name;
208 temp = value_struct_elt (&temp, NULL, "length", NULL, "structure");
209 name_length = (int) value_as_long (temp);
210 data_addr = value_address (temp) + TYPE_LENGTH (value_type (temp));
211 chrs = obstack_alloc (obstack, name_length + 1);
212 chrs[name_length] = '\0';
213 read_memory (data_addr, (gdb_byte *) chrs, name_length);
218 java_class_from_object (struct value *obj_val)
220 /* This is all rather inefficient, since the offsets of vtable and
221 class are fixed. FIXME */
222 struct value *vtable_val;
224 if (TYPE_CODE (value_type (obj_val)) == TYPE_CODE_PTR
225 && TYPE_LENGTH (TYPE_TARGET_TYPE (value_type (obj_val))) == 0)
226 obj_val = value_at (get_java_object_type (),
227 value_as_address (obj_val));
229 vtable_val = value_struct_elt (&obj_val, NULL, "vtable", NULL, "structure");
230 return value_struct_elt (&vtable_val, NULL, "class", NULL, "structure");
233 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
235 java_class_is_primitive (struct value *clas)
237 struct value *vtable = value_struct_elt (&clas, NULL, "vtable", NULL, "struct");
238 CORE_ADDR i = value_as_address (vtable);
240 return (int) (i & 0x7fffffff) == (int) 0x7fffffff;
243 /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
246 type_from_class (struct gdbarch *gdbarch, struct value *clas)
251 struct objfile *objfile;
252 struct value *utf8_name;
257 type = check_typedef (value_type (clas));
258 if (TYPE_CODE (type) == TYPE_CODE_PTR)
260 if (value_logical_not (clas))
262 clas = value_ind (clas);
264 addr = value_address (clas);
266 objfile = get_dynamics_objfile (gdbarch);
267 if (java_class_is_primitive (clas))
272 sig = value_struct_elt (&temp, NULL, "method_count", NULL, "structure");
273 return java_primitive_type (gdbarch, value_as_long (sig));
276 /* Get Class name. */
277 /* if clasloader non-null, prepend loader address. FIXME */
279 utf8_name = value_struct_elt (&temp, NULL, "name", NULL, "structure");
280 name = get_java_utf8_name (&objfile->objfile_obstack, utf8_name);
281 for (nptr = name; *nptr != 0; nptr++)
287 type = java_lookup_class (name);
291 type = alloc_type (objfile);
292 TYPE_CODE (type) = TYPE_CODE_STRUCT;
293 INIT_CPLUS_SPECIFIC (type);
297 char *signature = name;
298 int namelen = java_demangled_signature_length (signature);
300 if (namelen > strlen (name))
301 name = obstack_alloc (&objfile->objfile_obstack, namelen + 1);
302 java_demangled_signature_copy (name, signature);
303 name[namelen] = '\0';
306 /* Set array element type. */
307 temp = value_struct_elt (&temp, NULL, "methods", NULL, "structure");
308 deprecated_set_value_type (temp, lookup_pointer_type (value_type (clas)));
309 TYPE_TARGET_TYPE (type) = type_from_class (gdbarch, temp);
312 ALLOCATE_CPLUS_STRUCT_TYPE (type);
313 TYPE_TAG_NAME (type) = name;
315 add_class_symtab_symbol (add_class_symbol (type, addr));
316 return java_link_class_type (gdbarch, type, clas);
319 /* Fill in class TYPE with data from the CLAS value. */
322 java_link_class_type (struct gdbarch *gdbarch,
323 struct type *type, struct value *clas)
326 char *unqualified_name;
327 char *name = TYPE_TAG_NAME (type);
328 int ninterfaces, nfields, nmethods;
329 int type_is_object = 0;
330 struct fn_field *fn_fields;
331 struct fn_fieldlist *fn_fieldlists;
332 struct value *fields;
333 struct value *methods;
334 struct value *method = NULL;
335 struct value *field = NULL;
337 struct objfile *objfile = get_dynamics_objfile (gdbarch);
340 gdb_assert (name != NULL);
341 unqualified_name = strrchr (name, '.');
342 if (unqualified_name == NULL)
343 unqualified_name = name;
346 temp = value_struct_elt (&temp, NULL, "superclass", NULL, "structure");
347 if (strcmp (name, "java.lang.Object") == 0)
349 tsuper = get_java_object_type ();
350 if (tsuper && TYPE_CODE (tsuper) == TYPE_CODE_PTR)
351 tsuper = TYPE_TARGET_TYPE (tsuper);
355 tsuper = type_from_class (gdbarch, temp);
361 ninterfaces = value_as_long (value_struct_elt (&temp, NULL, "interface_len", NULL, "structure"));
363 TYPE_N_BASECLASSES (type) = (tsuper == NULL ? 0 : 1) + ninterfaces;
365 nfields = value_as_long (value_struct_elt (&temp, NULL, "field_count", NULL, "structure"));
366 nfields += TYPE_N_BASECLASSES (type);
367 nfields++; /* Add one for dummy "class" field. */
368 TYPE_NFIELDS (type) = nfields;
369 TYPE_FIELDS (type) = (struct field *)
370 TYPE_ALLOC (type, sizeof (struct field) * nfields);
372 memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields);
374 TYPE_FIELD_PRIVATE_BITS (type) =
375 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
376 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields);
378 TYPE_FIELD_PROTECTED_BITS (type) =
379 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
380 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields);
382 TYPE_FIELD_IGNORE_BITS (type) =
383 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
384 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields);
386 TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *)
387 TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type)));
388 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type));
392 TYPE_BASECLASS (type, 0) = tsuper;
394 SET_TYPE_FIELD_PRIVATE (type, 0);
398 if (i > 2 && name[i - 1] == ']' && tsuper != NULL)
401 TYPE_LENGTH (type) = TYPE_LENGTH (tsuper) + 4; /* size with "length" */
406 temp = value_struct_elt (&temp, NULL, "size_in_bytes", NULL, "structure");
407 TYPE_LENGTH (type) = value_as_long (temp);
411 nfields--; /* First set up dummy "class" field. */
412 SET_FIELD_PHYSADDR (TYPE_FIELD (type, nfields), value_address (clas));
413 TYPE_FIELD_NAME (type, nfields) = "class";
414 TYPE_FIELD_TYPE (type, nfields) = value_type (clas);
415 SET_TYPE_FIELD_PRIVATE (type, nfields);
417 for (i = TYPE_N_BASECLASSES (type); i < nfields; i++)
425 fields = value_struct_elt (&temp, NULL, "fields", NULL, "structure");
426 field = value_ind (fields);
429 { /* Re-use field value for next field. */
431 = value_address (field) + TYPE_LENGTH (value_type (field));
433 set_value_address (field, addr);
434 set_value_lazy (field, 1);
437 temp = value_struct_elt (&temp, NULL, "name", NULL, "structure");
438 TYPE_FIELD_NAME (type, i) =
439 get_java_utf8_name (&objfile->objfile_obstack, temp);
441 accflags = value_as_long (value_struct_elt (&temp, NULL, "accflags",
444 temp = value_struct_elt (&temp, NULL, "info", NULL, "structure");
445 boffset = value_as_long (value_struct_elt (&temp, NULL, "boffset",
447 if (accflags & 0x0001) /* public access */
451 if (accflags & 0x0002) /* private access */
453 SET_TYPE_FIELD_PRIVATE (type, i);
455 if (accflags & 0x0004) /* protected access */
457 SET_TYPE_FIELD_PROTECTED (type, i);
459 if (accflags & 0x0008) /* ACC_STATIC */
460 SET_FIELD_PHYSADDR (TYPE_FIELD (type, i), boffset);
462 TYPE_FIELD_BITPOS (type, i) = 8 * boffset;
463 if (accflags & 0x8000) /* FIELD_UNRESOLVED_FLAG */
465 TYPE_FIELD_TYPE (type, i) = get_java_object_type (); /* FIXME */
472 temp = value_struct_elt (&temp, NULL, "type", NULL, "structure");
473 ftype = type_from_class (gdbarch, temp);
474 if (TYPE_CODE (ftype) == TYPE_CODE_STRUCT)
475 ftype = lookup_pointer_type (ftype);
476 TYPE_FIELD_TYPE (type, i) = ftype;
481 nmethods = value_as_long (value_struct_elt (&temp, NULL, "method_count",
483 TYPE_NFN_FIELDS_TOTAL (type) = nmethods;
484 j = nmethods * sizeof (struct fn_field);
485 fn_fields = (struct fn_field *)
486 obstack_alloc (&dynamics_objfile->objfile_obstack, j);
487 memset (fn_fields, 0, j);
488 fn_fieldlists = (struct fn_fieldlist *)
489 alloca (nmethods * sizeof (struct fn_fieldlist));
492 for (i = 0; i < nmethods; i++)
500 methods = value_struct_elt (&temp, NULL, "methods", NULL, "structure");
501 method = value_ind (methods);
504 { /* Re-use method value for next method. */
506 = value_address (method) + TYPE_LENGTH (value_type (method));
508 set_value_address (method, addr);
509 set_value_lazy (method, 1);
512 /* Get method name. */
514 temp = value_struct_elt (&temp, NULL, "name", NULL, "structure");
515 mname = get_java_utf8_name (&objfile->objfile_obstack, temp);
516 if (strcmp (mname, "<init>") == 0)
517 mname = unqualified_name;
519 /* Check for an existing method with the same name.
520 * This makes building the fn_fieldslists an O(nmethods**2)
521 * operation. That could be using hashing, but I doubt it
522 * is worth it. Note that we do maintain the order of methods
523 * in the inferior's Method table (as long as that is grouped
524 * by method name), which I think is desirable. --PB */
525 for (k = 0, j = TYPE_NFN_FIELDS (type);;)
528 { /* No match - new method name. */
529 j = TYPE_NFN_FIELDS (type)++;
530 fn_fieldlists[j].name = mname;
531 fn_fieldlists[j].length = 1;
532 fn_fieldlists[j].fn_fields = &fn_fields[i];
536 if (strcmp (mname, fn_fieldlists[j].name) == 0)
537 { /* Found an existing method with the same name. */
540 if (mname != unqualified_name)
541 obstack_free (&objfile->objfile_obstack, mname);
542 mname = fn_fieldlists[j].name;
543 fn_fieldlists[j].length++;
544 k = i - k; /* Index of new slot. */
545 /* Shift intervening fn_fields (between k and i) down. */
546 for (l = i; l > k; l--)
547 fn_fields[l] = fn_fields[l - 1];
548 for (l = TYPE_NFN_FIELDS (type); --l > j;)
549 fn_fieldlists[l].fn_fields++;
552 k += fn_fieldlists[j].length;
554 fn_fields[k].physname = "";
555 fn_fields[k].is_stub = 1;
557 fn_fields[k].type = lookup_function_type
558 (builtin_java_type (gdbarch)->builtin_void);
559 TYPE_CODE (fn_fields[k].type) = TYPE_CODE_METHOD;
562 j = TYPE_NFN_FIELDS (type) * sizeof (struct fn_fieldlist);
563 TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *)
564 obstack_alloc (&dynamics_objfile->objfile_obstack, j);
565 memcpy (TYPE_FN_FIELDLISTS (type), fn_fieldlists, j);
570 static struct type *java_object_type;
572 /* A free function that is attached to the objfile defining
573 java_object_type. This is used to clear the cached type whenever
574 its owning objfile is destroyed. */
576 jv_clear_object_type (struct objfile *objfile, void *ignore)
578 java_object_type = NULL;
582 set_java_object_type (struct type *type)
584 struct objfile *owner;
586 gdb_assert (java_object_type == NULL);
588 owner = TYPE_OBJFILE (type);
590 set_objfile_data (owner, jv_type_objfile_data_key, &java_object_type);
591 java_object_type = type;
595 get_java_object_type (void)
597 if (java_object_type == NULL)
601 sym = lookup_symbol ("java.lang.Object", NULL, STRUCT_DOMAIN, NULL);
603 error (_("cannot find java.lang.Object"));
604 set_java_object_type (SYMBOL_TYPE (sym));
606 return java_object_type;
610 get_java_object_header_size (struct gdbarch *gdbarch)
612 struct type *objtype = get_java_object_type ();
615 return (2 * gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT);
617 return TYPE_LENGTH (objtype);
621 is_object_type (struct type *type)
623 CHECK_TYPEDEF (type);
624 if (TYPE_CODE (type) == TYPE_CODE_PTR)
626 struct type *ttype = check_typedef (TYPE_TARGET_TYPE (type));
628 if (TYPE_CODE (ttype) != TYPE_CODE_STRUCT)
630 while (TYPE_N_BASECLASSES (ttype) > 0)
631 ttype = TYPE_BASECLASS (ttype, 0);
632 name = TYPE_TAG_NAME (ttype);
633 if (name != NULL && strcmp (name, "java.lang.Object") == 0)
635 name = TYPE_NFIELDS (ttype) > 0 ? TYPE_FIELD_NAME (ttype, 0) : (char *) 0;
636 if (name != NULL && strcmp (name, "vtable") == 0)
638 if (java_object_type == NULL)
639 set_java_object_type (type);
647 java_primitive_type (struct gdbarch *gdbarch, int signature)
649 const struct builtin_java_type *builtin = builtin_java_type (gdbarch);
654 return builtin->builtin_byte;
656 return builtin->builtin_short;
658 return builtin->builtin_int;
660 return builtin->builtin_long;
662 return builtin->builtin_boolean;
664 return builtin->builtin_char;
666 return builtin->builtin_float;
668 return builtin->builtin_double;
670 return builtin->builtin_void;
672 error (_("unknown signature '%c' for primitive type"), (char) signature);
675 /* If name[0 .. namelen-1] is the name of a primitive Java type,
676 return that type. Otherwise, return NULL. */
679 java_primitive_type_from_name (struct gdbarch *gdbarch,
680 char *name, int namelen)
682 const struct builtin_java_type *builtin = builtin_java_type (gdbarch);
687 if (namelen == 4 && memcmp (name, "byte", 4) == 0)
688 return builtin->builtin_byte;
689 if (namelen == 7 && memcmp (name, "boolean", 7) == 0)
690 return builtin->builtin_boolean;
693 if (namelen == 4 && memcmp (name, "char", 4) == 0)
694 return builtin->builtin_char;
696 if (namelen == 6 && memcmp (name, "double", 6) == 0)
697 return builtin->builtin_double;
700 if (namelen == 5 && memcmp (name, "float", 5) == 0)
701 return builtin->builtin_float;
704 if (namelen == 3 && memcmp (name, "int", 3) == 0)
705 return builtin->builtin_int;
708 if (namelen == 4 && memcmp (name, "long", 4) == 0)
709 return builtin->builtin_long;
712 if (namelen == 5 && memcmp (name, "short", 5) == 0)
713 return builtin->builtin_short;
716 if (namelen == 4 && memcmp (name, "void", 4) == 0)
717 return builtin->builtin_void;
724 java_primitive_type_name (int signature)
747 error (_("unknown signature '%c' for primitive type"), (char) signature);
750 /* Return the length (in bytes) of demangled name of the Java type
751 signature string SIGNATURE. */
754 java_demangled_signature_length (char *signature)
758 for (; *signature == '['; signature++)
759 array += 2; /* Two chars for "[]". */
760 switch (signature[0])
763 /* Subtract 2 for 'L' and ';'. */
764 return strlen (signature) - 2 + array;
766 return strlen (java_primitive_type_name (signature[0])) + array;
770 /* Demangle the Java type signature SIGNATURE, leaving the result in RESULT. */
773 java_demangled_signature_copy (char *result, char *signature)
779 while (*signature == '[')
784 switch (signature[0])
787 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
790 for (; *signature != ';' && *signature != '\0'; signature++)
792 if (*signature == '/')
799 ptr = java_primitive_type_name (signature[0]);
801 strcpy (result, ptr);
812 /* Return the demangled name of the Java type signature string SIGNATURE,
813 as a freshly allocated copy. */
816 java_demangle_type_signature (char *signature)
818 int length = java_demangled_signature_length (signature);
819 char *result = xmalloc (length + 1);
821 java_demangled_signature_copy (result, signature);
822 result[length] = '\0';
826 /* Return the type of TYPE followed by DIMS pairs of [ ].
827 If DIMS == 0, TYPE is returned. */
830 java_array_type (struct type *type, int dims)
834 /* FIXME This is bogus! Java arrays are not gdb arrays! */
835 type = lookup_array_range_type (type, 0, 0);
841 /* Create a Java string in the inferior from a (Utf8) literal. */
843 static struct value *
844 java_value_string (char *ptr, int len)
846 error (_("not implemented - java_value_string")); /* FIXME */
849 /* Print the character C on STREAM as part of the contents of a literal
850 string whose delimiter is QUOTER. Note that that format for printing
851 characters and strings is language specific. */
854 java_emit_char (int c, struct type *type, struct ui_file *stream, int quoter)
860 fprintf_filtered (stream, "\\%c", c);
863 fputs_filtered ("\\b", stream);
866 fputs_filtered ("\\t", stream);
869 fputs_filtered ("\\n", stream);
872 fputs_filtered ("\\f", stream);
875 fputs_filtered ("\\r", stream);
879 fputc_filtered (c, stream);
881 fprintf_filtered (stream, "\\u%.4x", (unsigned int) c);
886 static struct value *
887 evaluate_subexp_java (struct type *expect_type, struct expression *exp,
888 int *pos, enum noside noside)
893 enum exp_opcode op = exp->elts[*pos].opcode;
901 if (noside == EVAL_SKIP)
904 arg1 = evaluate_subexp_java (NULL_TYPE, exp, pos, EVAL_NORMAL);
905 if (is_object_type (value_type (arg1)))
909 type = type_from_class (exp->gdbarch, java_class_from_object (arg1));
910 arg1 = value_cast (lookup_pointer_type (type), arg1);
912 if (noside == EVAL_SKIP)
914 return value_ind (arg1);
916 case BINOP_SUBSCRIPT:
918 arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
919 arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
920 if (noside == EVAL_SKIP)
922 /* If the user attempts to subscript something that is not an
923 array or pointer type (like a plain int variable for example),
924 then report this as an error. */
926 arg1 = coerce_ref (arg1);
927 type = check_typedef (value_type (arg1));
928 if (TYPE_CODE (type) == TYPE_CODE_PTR)
929 type = check_typedef (TYPE_TARGET_TYPE (type));
930 name = TYPE_NAME (type);
932 name = TYPE_TAG_NAME (type);
933 i = name == NULL ? 0 : strlen (name);
934 if (TYPE_CODE (type) == TYPE_CODE_STRUCT
935 && i > 2 && name[i - 1] == ']')
937 enum bfd_endian byte_order = gdbarch_byte_order (exp->gdbarch);
940 struct type *el_type;
943 struct value *clas = java_class_from_object (arg1);
944 struct value *temp = clas;
945 /* Get CLASS_ELEMENT_TYPE of the array type. */
946 temp = value_struct_elt (&temp, NULL, "methods",
948 deprecated_set_value_type (temp, value_type (clas));
949 el_type = type_from_class (exp->gdbarch, temp);
950 if (TYPE_CODE (el_type) == TYPE_CODE_STRUCT)
951 el_type = lookup_pointer_type (el_type);
953 if (noside == EVAL_AVOID_SIDE_EFFECTS)
954 return value_zero (el_type, VALUE_LVAL (arg1));
955 address = value_as_address (arg1);
956 address += get_java_object_header_size (exp->gdbarch);
957 read_memory (address, buf4, 4);
958 length = (long) extract_signed_integer (buf4, 4, byte_order);
959 index = (long) value_as_long (arg2);
960 if (index >= length || index < 0)
961 error (_("array index (%ld) out of bounds (length: %ld)"),
963 address = (address + 4) + index * TYPE_LENGTH (el_type);
964 return value_at (el_type, address);
966 else if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
968 if (noside == EVAL_AVOID_SIDE_EFFECTS)
969 return value_zero (TYPE_TARGET_TYPE (type), VALUE_LVAL (arg1));
971 return value_subscript (arg1, value_as_long (arg2));
974 error (_("cannot subscript something of type `%s'"), name);
976 error (_("cannot subscript requested type"));
980 i = longest_to_int (exp->elts[pc + 1].longconst);
981 (*pos) += 3 + BYTES_TO_EXP_ELEM (i + 1);
982 if (noside == EVAL_SKIP)
984 return java_value_string (&exp->elts[pc + 2].string, i);
987 arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside);
988 /* Convert object field (such as TYPE.class) to reference. */
989 if (TYPE_CODE (value_type (arg1)) == TYPE_CODE_STRUCT)
990 arg1 = value_addr (arg1);
996 return evaluate_subexp_standard (expect_type, exp, pos, noside);
998 return value_from_longest (builtin_type (exp->gdbarch)->builtin_int, 1);
1001 static char *java_demangle (const char *mangled, int options)
1003 return cplus_demangle (mangled, options | DMGL_JAVA);
1006 /* Find the member function name of the demangled name NAME. NAME
1007 must be a method name including arguments, in order to correctly
1008 locate the last component.
1010 This function return a pointer to the first dot before the
1011 member function name, or NULL if the name was not of the
1015 java_find_last_component (const char *name)
1019 /* Find argument list. */
1020 p = strchr (name, '(');
1025 /* Back up and find first dot prior to argument list. */
1026 while (p > name && *p != '.')
1035 /* Return the name of the class containing method PHYSNAME. */
1038 java_class_name_from_physname (const char *physname)
1042 char *demangled_name = java_demangle (physname, DMGL_PARAMS | DMGL_ANSI);
1044 if (demangled_name == NULL)
1047 end = java_find_last_component (demangled_name);
1050 ret = xmalloc (end - demangled_name + 1);
1051 memcpy (ret, demangled_name, end - demangled_name);
1052 ret[end - demangled_name] = '\0';
1055 xfree (demangled_name);
1059 /* Table mapping opcodes into strings for printing operators
1060 and precedences of the operators. */
1062 const struct op_print java_op_print_tab[] =
1064 {",", BINOP_COMMA, PREC_COMMA, 0},
1065 {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
1066 {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
1067 {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
1068 {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
1069 {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
1070 {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
1071 {"==", BINOP_EQUAL, PREC_EQUAL, 0},
1072 {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
1073 {"<=", BINOP_LEQ, PREC_ORDER, 0},
1074 {">=", BINOP_GEQ, PREC_ORDER, 0},
1075 {">", BINOP_GTR, PREC_ORDER, 0},
1076 {"<", BINOP_LESS, PREC_ORDER, 0},
1077 {">>", BINOP_RSH, PREC_SHIFT, 0},
1078 {"<<", BINOP_LSH, PREC_SHIFT, 0},
1079 {"+", BINOP_ADD, PREC_ADD, 0},
1080 {"-", BINOP_SUB, PREC_ADD, 0},
1081 {"*", BINOP_MUL, PREC_MUL, 0},
1082 {"/", BINOP_DIV, PREC_MUL, 0},
1083 {"%", BINOP_REM, PREC_MUL, 0},
1084 {"-", UNOP_NEG, PREC_PREFIX, 0},
1085 {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
1086 {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
1087 {"*", UNOP_IND, PREC_PREFIX, 0},
1088 {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
1089 {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
1093 enum java_primitive_types
1095 java_primitive_type_int,
1096 java_primitive_type_short,
1097 java_primitive_type_long,
1098 java_primitive_type_byte,
1099 java_primitive_type_boolean,
1100 java_primitive_type_char,
1101 java_primitive_type_float,
1102 java_primitive_type_double,
1103 java_primitive_type_void,
1104 nr_java_primitive_types
1108 java_language_arch_info (struct gdbarch *gdbarch,
1109 struct language_arch_info *lai)
1111 const struct builtin_java_type *builtin = builtin_java_type (gdbarch);
1113 lai->string_char_type = builtin->builtin_char;
1114 lai->primitive_type_vector
1115 = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_java_primitive_types + 1,
1117 lai->primitive_type_vector [java_primitive_type_int]
1118 = builtin->builtin_int;
1119 lai->primitive_type_vector [java_primitive_type_short]
1120 = builtin->builtin_short;
1121 lai->primitive_type_vector [java_primitive_type_long]
1122 = builtin->builtin_long;
1123 lai->primitive_type_vector [java_primitive_type_byte]
1124 = builtin->builtin_byte;
1125 lai->primitive_type_vector [java_primitive_type_boolean]
1126 = builtin->builtin_boolean;
1127 lai->primitive_type_vector [java_primitive_type_char]
1128 = builtin->builtin_char;
1129 lai->primitive_type_vector [java_primitive_type_float]
1130 = builtin->builtin_float;
1131 lai->primitive_type_vector [java_primitive_type_double]
1132 = builtin->builtin_double;
1133 lai->primitive_type_vector [java_primitive_type_void]
1134 = builtin->builtin_void;
1136 lai->bool_type_symbol = "boolean";
1137 lai->bool_type_default = builtin->builtin_boolean;
1140 const struct exp_descriptor exp_descriptor_java =
1142 print_subexp_standard,
1143 operator_length_standard,
1144 operator_check_standard,
1146 dump_subexp_body_standard,
1147 evaluate_subexp_java
1150 const struct language_defn java_language_defn =
1152 "java", /* Language name */
1159 &exp_descriptor_java,
1163 c_printchar, /* Print a character constant */
1164 c_printstr, /* Function to print string constant */
1165 java_emit_char, /* Function to print a single character */
1166 java_print_type, /* Print a type using appropriate syntax */
1167 default_print_typedef, /* Print a typedef using appropriate syntax */
1168 java_val_print, /* Print a value using appropriate syntax */
1169 java_value_print, /* Print a top-level value */
1170 NULL, /* Language specific skip_trampoline */
1171 "this", /* name_of_this */
1172 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1173 basic_lookup_transparent_type,/* lookup_transparent_type */
1174 java_demangle, /* Language specific symbol demangler */
1175 java_class_name_from_physname,/* Language specific class name */
1176 java_op_print_tab, /* expression operators for printing */
1177 0, /* not c-style arrays */
1178 0, /* String lower bound */
1179 default_word_break_characters,
1180 default_make_symbol_completion_list,
1181 java_language_arch_info,
1182 default_print_array_index,
1183 default_pass_by_reference,
1189 build_java_types (struct gdbarch *gdbarch)
1191 struct builtin_java_type *builtin_java_type
1192 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_java_type);
1194 builtin_java_type->builtin_int
1195 = arch_integer_type (gdbarch, 32, 0, "int");
1196 builtin_java_type->builtin_short
1197 = arch_integer_type (gdbarch, 16, 0, "short");
1198 builtin_java_type->builtin_long
1199 = arch_integer_type (gdbarch, 64, 0, "long");
1200 builtin_java_type->builtin_byte
1201 = arch_integer_type (gdbarch, 8, 0, "byte");
1202 builtin_java_type->builtin_boolean
1203 = arch_boolean_type (gdbarch, 8, 0, "boolean");
1204 builtin_java_type->builtin_char
1205 = arch_character_type (gdbarch, 16, 1, "char");
1206 builtin_java_type->builtin_float
1207 = arch_float_type (gdbarch, 32, "float", NULL);
1208 builtin_java_type->builtin_double
1209 = arch_float_type (gdbarch, 64, "double", NULL);
1210 builtin_java_type->builtin_void
1211 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void");
1213 return builtin_java_type;
1216 static struct gdbarch_data *java_type_data;
1218 const struct builtin_java_type *
1219 builtin_java_type (struct gdbarch *gdbarch)
1221 return gdbarch_data (gdbarch, java_type_data);
1225 _initialize_java_language (void)
1227 jv_dynamics_objfile_data_key
1228 = register_objfile_data_with_cleanup (NULL, jv_per_objfile_free);
1229 jv_type_objfile_data_key
1230 = register_objfile_data_with_cleanup (NULL, jv_clear_object_type);
1232 java_type_data = gdbarch_data_register_post_init (build_java_types);
1234 add_language (&java_language_defn);