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;
123 class_symtab = allocate_symtab ("<java-classes>", objfile);
124 class_symtab->language = language_java;
125 bv = (struct blockvector *)
126 obstack_alloc (&objfile->objfile_obstack,
127 sizeof (struct blockvector) + sizeof (struct block *));
128 BLOCKVECTOR_NBLOCKS (bv) = 1;
129 BLOCKVECTOR (class_symtab) = bv;
131 /* Allocate dummy STATIC_BLOCK. */
132 bl = allocate_block (&objfile->objfile_obstack);
133 BLOCK_DICT (bl) = dict_create_linear (&objfile->objfile_obstack,
135 BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK) = bl;
137 /* Allocate GLOBAL_BLOCK. */
138 bl = allocate_block (&objfile->objfile_obstack);
139 BLOCK_DICT (bl) = dict_create_hashed_expandable ();
140 BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = bl;
141 class_symtab->free_func = free_class_block;
147 add_class_symtab_symbol (struct symbol *sym)
149 struct symtab *symtab
150 = get_java_class_symtab (get_objfile_arch (SYMBOL_SYMTAB (sym)->objfile));
151 struct blockvector *bv = BLOCKVECTOR (symtab);
152 dict_add_symbol (BLOCK_DICT (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)), sym);
155 static struct symbol *
156 add_class_symbol (struct type *type, CORE_ADDR addr)
159 sym = (struct symbol *)
160 obstack_alloc (&dynamics_objfile->objfile_obstack, sizeof (struct symbol));
161 memset (sym, 0, sizeof (struct symbol));
162 SYMBOL_LANGUAGE (sym) = language_java;
163 SYMBOL_SET_LINKAGE_NAME (sym, TYPE_TAG_NAME (type));
164 SYMBOL_CLASS (sym) = LOC_TYPEDEF;
165 /* SYMBOL_VALUE (sym) = valu; */
166 SYMBOL_TYPE (sym) = type;
167 SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN;
168 SYMBOL_VALUE_ADDRESS (sym) = addr;
172 /* Free the dynamic symbols block. */
174 free_class_block (struct symtab *symtab)
176 struct blockvector *bv = BLOCKVECTOR (symtab);
177 struct block *bl = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
179 dict_free (BLOCK_DICT (bl));
183 java_lookup_class (char *name)
186 sym = lookup_symbol (name, expression_context_block, STRUCT_DOMAIN, NULL);
188 return SYMBOL_TYPE (sym);
191 if (called from parser)
193 call lookup_class (or similar) in inferior;
197 addr = found in inferior;
202 type = alloc_type (objfile);
203 TYPE_CODE (type) = TYPE_CODE_STRUCT;
204 INIT_CPLUS_SPECIFIC (type);
205 TYPE_TAG_NAME (type) = obsavestring (name, strlen (name), &objfile->objfile_obstack);
206 TYPE_STUB (type) = 1;
210 /* FIXME - should search inferior's symbol table. */
215 /* Return a nul-terminated string (allocated on OBSTACK) for
216 a name given by NAME (which has type Utf8Const*). */
219 get_java_utf8_name (struct obstack *obstack, struct value *name)
222 struct value *temp = name;
225 temp = value_struct_elt (&temp, NULL, "length", NULL, "structure");
226 name_length = (int) value_as_long (temp);
227 data_addr = value_address (temp) + TYPE_LENGTH (value_type (temp));
228 chrs = obstack_alloc (obstack, name_length + 1);
229 chrs[name_length] = '\0';
230 read_memory (data_addr, (gdb_byte *) chrs, name_length);
235 java_class_from_object (struct value *obj_val)
237 /* This is all rather inefficient, since the offsets of vtable and
238 class are fixed. FIXME */
239 struct value *vtable_val;
241 if (TYPE_CODE (value_type (obj_val)) == TYPE_CODE_PTR
242 && TYPE_LENGTH (TYPE_TARGET_TYPE (value_type (obj_val))) == 0)
243 obj_val = value_at (get_java_object_type (),
244 value_as_address (obj_val));
246 vtable_val = value_struct_elt (&obj_val, NULL, "vtable", NULL, "structure");
247 return value_struct_elt (&vtable_val, NULL, "class", NULL, "structure");
250 /* Check if CLASS_IS_PRIMITIVE(value of clas): */
252 java_class_is_primitive (struct value *clas)
254 struct value *vtable = value_struct_elt (&clas, NULL, "vtable", NULL, "struct");
255 CORE_ADDR i = value_as_address (vtable);
256 return (int) (i & 0x7fffffff) == (int) 0x7fffffff;
259 /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */
262 type_from_class (struct gdbarch *gdbarch, struct value *clas)
267 struct objfile *objfile;
268 struct value *utf8_name;
272 struct dict_iterator iter;
275 type = check_typedef (value_type (clas));
276 if (TYPE_CODE (type) == TYPE_CODE_PTR)
278 if (value_logical_not (clas))
280 clas = value_ind (clas);
282 addr = value_address (clas);
285 get_java_class_symtab ();
286 bl = BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab), GLOBAL_BLOCK);
287 ALL_BLOCK_SYMBOLS (block, iter, sym)
289 if (SYMBOL_VALUE_ADDRESS (sym) == addr)
290 return SYMBOL_TYPE (sym);
294 objfile = get_dynamics_objfile (gdbarch);
295 if (java_class_is_primitive (clas))
299 sig = value_struct_elt (&temp, NULL, "method_count", NULL, "structure");
300 return java_primitive_type (gdbarch, value_as_long (sig));
303 /* Get Class name. */
304 /* if clasloader non-null, prepend loader address. FIXME */
306 utf8_name = value_struct_elt (&temp, NULL, "name", NULL, "structure");
307 name = get_java_utf8_name (&objfile->objfile_obstack, utf8_name);
308 for (nptr = name; *nptr != 0; nptr++)
314 type = java_lookup_class (name);
318 type = alloc_type (objfile);
319 TYPE_CODE (type) = TYPE_CODE_STRUCT;
320 INIT_CPLUS_SPECIFIC (type);
324 char *signature = name;
325 int namelen = java_demangled_signature_length (signature);
326 if (namelen > strlen (name))
327 name = obstack_alloc (&objfile->objfile_obstack, namelen + 1);
328 java_demangled_signature_copy (name, signature);
329 name[namelen] = '\0';
332 /* Set array element type. */
333 temp = value_struct_elt (&temp, NULL, "methods", NULL, "structure");
334 deprecated_set_value_type (temp, lookup_pointer_type (value_type (clas)));
335 TYPE_TARGET_TYPE (type) = type_from_class (gdbarch, temp);
338 ALLOCATE_CPLUS_STRUCT_TYPE (type);
339 TYPE_TAG_NAME (type) = name;
341 add_class_symtab_symbol (add_class_symbol (type, addr));
342 return java_link_class_type (gdbarch, type, clas);
345 /* Fill in class TYPE with data from the CLAS value. */
348 java_link_class_type (struct gdbarch *gdbarch,
349 struct type *type, struct value *clas)
352 char *unqualified_name;
353 char *name = TYPE_TAG_NAME (type);
354 int ninterfaces, nfields, nmethods;
355 int type_is_object = 0;
356 struct fn_field *fn_fields;
357 struct fn_fieldlist *fn_fieldlists;
358 struct value *fields;
359 struct value *methods;
360 struct value *method = NULL;
361 struct value *field = NULL;
363 struct objfile *objfile = get_dynamics_objfile (gdbarch);
366 gdb_assert (name != NULL);
367 unqualified_name = strrchr (name, '.');
368 if (unqualified_name == NULL)
369 unqualified_name = name;
372 temp = value_struct_elt (&temp, NULL, "superclass", NULL, "structure");
373 if (strcmp (name, "java.lang.Object") == 0)
375 tsuper = get_java_object_type ();
376 if (tsuper && TYPE_CODE (tsuper) == TYPE_CODE_PTR)
377 tsuper = TYPE_TARGET_TYPE (tsuper);
381 tsuper = type_from_class (gdbarch, temp);
387 ninterfaces = value_as_long (value_struct_elt (&temp, NULL, "interface_len", NULL, "structure"));
389 TYPE_N_BASECLASSES (type) = (tsuper == NULL ? 0 : 1) + ninterfaces;
391 nfields = value_as_long (value_struct_elt (&temp, NULL, "field_count", NULL, "structure"));
392 nfields += TYPE_N_BASECLASSES (type);
393 nfields++; /* Add one for dummy "class" field. */
394 TYPE_NFIELDS (type) = nfields;
395 TYPE_FIELDS (type) = (struct field *)
396 TYPE_ALLOC (type, sizeof (struct field) * nfields);
398 memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields);
400 TYPE_FIELD_PRIVATE_BITS (type) =
401 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
402 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields);
404 TYPE_FIELD_PROTECTED_BITS (type) =
405 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
406 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields);
408 TYPE_FIELD_IGNORE_BITS (type) =
409 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
410 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields);
412 TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *)
413 TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type)));
414 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type));
418 TYPE_BASECLASS (type, 0) = tsuper;
420 SET_TYPE_FIELD_PRIVATE (type, 0);
424 if (i > 2 && name[i - 1] == ']' && tsuper != NULL)
427 TYPE_LENGTH (type) = TYPE_LENGTH (tsuper) + 4; /* size with "length" */
432 temp = value_struct_elt (&temp, NULL, "size_in_bytes", NULL, "structure");
433 TYPE_LENGTH (type) = value_as_long (temp);
437 nfields--; /* First set up dummy "class" field. */
438 SET_FIELD_PHYSADDR (TYPE_FIELD (type, nfields), value_address (clas));
439 TYPE_FIELD_NAME (type, nfields) = "class";
440 TYPE_FIELD_TYPE (type, nfields) = value_type (clas);
441 SET_TYPE_FIELD_PRIVATE (type, nfields);
443 for (i = TYPE_N_BASECLASSES (type); i < nfields; i++)
450 fields = value_struct_elt (&temp, NULL, "fields", NULL, "structure");
451 field = value_ind (fields);
454 { /* Re-use field value for next field. */
456 = value_address (field) + TYPE_LENGTH (value_type (field));
457 set_value_address (field, addr);
458 set_value_lazy (field, 1);
461 temp = value_struct_elt (&temp, NULL, "name", NULL, "structure");
462 TYPE_FIELD_NAME (type, i) =
463 get_java_utf8_name (&objfile->objfile_obstack, temp);
465 accflags = value_as_long (value_struct_elt (&temp, NULL, "accflags",
468 temp = value_struct_elt (&temp, NULL, "info", NULL, "structure");
469 boffset = value_as_long (value_struct_elt (&temp, NULL, "boffset",
471 if (accflags & 0x0001) /* public access */
475 if (accflags & 0x0002) /* private access */
477 SET_TYPE_FIELD_PRIVATE (type, i);
479 if (accflags & 0x0004) /* protected access */
481 SET_TYPE_FIELD_PROTECTED (type, i);
483 if (accflags & 0x0008) /* ACC_STATIC */
484 SET_FIELD_PHYSADDR (TYPE_FIELD (type, i), boffset);
486 TYPE_FIELD_BITPOS (type, i) = 8 * boffset;
487 if (accflags & 0x8000) /* FIELD_UNRESOLVED_FLAG */
489 TYPE_FIELD_TYPE (type, i) = get_java_object_type (); /* FIXME */
495 temp = value_struct_elt (&temp, NULL, "type", NULL, "structure");
496 ftype = type_from_class (gdbarch, temp);
497 if (TYPE_CODE (ftype) == TYPE_CODE_STRUCT)
498 ftype = lookup_pointer_type (ftype);
499 TYPE_FIELD_TYPE (type, i) = ftype;
504 nmethods = value_as_long (value_struct_elt (&temp, NULL, "method_count",
506 TYPE_NFN_FIELDS_TOTAL (type) = nmethods;
507 j = nmethods * sizeof (struct fn_field);
508 fn_fields = (struct fn_field *)
509 obstack_alloc (&dynamics_objfile->objfile_obstack, j);
510 memset (fn_fields, 0, j);
511 fn_fieldlists = (struct fn_fieldlist *)
512 alloca (nmethods * sizeof (struct fn_fieldlist));
515 for (i = 0; i < nmethods; i++)
522 methods = value_struct_elt (&temp, NULL, "methods", NULL, "structure");
523 method = value_ind (methods);
526 { /* Re-use method value for next method. */
528 = 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. */
560 if (mname != unqualified_name)
561 obstack_free (&objfile->objfile_obstack, mname);
562 mname = fn_fieldlists[j].name;
563 fn_fieldlists[j].length++;
564 k = i - k; /* Index of new slot. */
565 /* Shift intervening fn_fields (between k and i) down. */
566 for (l = i; l > k; l--)
567 fn_fields[l] = fn_fields[l - 1];
568 for (l = TYPE_NFN_FIELDS (type); --l > j;)
569 fn_fieldlists[l].fn_fields++;
572 k += fn_fieldlists[j].length;
574 fn_fields[k].physname = "";
575 fn_fields[k].is_stub = 1;
577 fn_fields[k].type = lookup_function_type
578 (builtin_java_type (gdbarch)->builtin_void);
579 TYPE_CODE (fn_fields[k].type) = TYPE_CODE_METHOD;
582 j = TYPE_NFN_FIELDS (type) * sizeof (struct fn_fieldlist);
583 TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *)
584 obstack_alloc (&dynamics_objfile->objfile_obstack, j);
585 memcpy (TYPE_FN_FIELDLISTS (type), fn_fieldlists, j);
590 static struct type *java_object_type;
592 /* A free function that is attached to the objfile defining
593 java_object_type. This is used to clear the cached type whenever
594 its owning objfile is destroyed. */
596 jv_clear_object_type (struct objfile *objfile, void *ignore)
598 java_object_type = NULL;
602 set_java_object_type (struct type *type)
604 struct objfile *owner;
606 gdb_assert (java_object_type == NULL);
608 owner = TYPE_OBJFILE (type);
610 set_objfile_data (owner, jv_type_objfile_data_key, &java_object_type);
611 java_object_type = type;
615 get_java_object_type (void)
617 if (java_object_type == NULL)
620 sym = lookup_symbol ("java.lang.Object", NULL, STRUCT_DOMAIN, NULL);
622 error (_("cannot find java.lang.Object"));
623 set_java_object_type (SYMBOL_TYPE (sym));
625 return java_object_type;
629 get_java_object_header_size (struct gdbarch *gdbarch)
631 struct type *objtype = get_java_object_type ();
633 return (2 * gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT);
635 return TYPE_LENGTH (objtype);
639 is_object_type (struct type *type)
641 CHECK_TYPEDEF (type);
642 if (TYPE_CODE (type) == TYPE_CODE_PTR)
644 struct type *ttype = check_typedef (TYPE_TARGET_TYPE (type));
646 if (TYPE_CODE (ttype) != TYPE_CODE_STRUCT)
648 while (TYPE_N_BASECLASSES (ttype) > 0)
649 ttype = TYPE_BASECLASS (ttype, 0);
650 name = TYPE_TAG_NAME (ttype);
651 if (name != NULL && strcmp (name, "java.lang.Object") == 0)
653 name = TYPE_NFIELDS (ttype) > 0 ? TYPE_FIELD_NAME (ttype, 0) : (char *) 0;
654 if (name != NULL && strcmp (name, "vtable") == 0)
656 if (java_object_type == NULL)
657 set_java_object_type (type);
665 java_primitive_type (struct gdbarch *gdbarch, int signature)
667 const struct builtin_java_type *builtin = builtin_java_type (gdbarch);
672 return builtin->builtin_byte;
674 return builtin->builtin_short;
676 return builtin->builtin_int;
678 return builtin->builtin_long;
680 return builtin->builtin_boolean;
682 return builtin->builtin_char;
684 return builtin->builtin_float;
686 return builtin->builtin_double;
688 return builtin->builtin_void;
690 error (_("unknown signature '%c' for primitive type"), (char) signature);
693 /* If name[0 .. namelen-1] is the name of a primitive Java type,
694 return that type. Otherwise, return NULL. */
697 java_primitive_type_from_name (struct gdbarch *gdbarch,
698 char *name, int namelen)
700 const struct builtin_java_type *builtin = builtin_java_type (gdbarch);
705 if (namelen == 4 && memcmp (name, "byte", 4) == 0)
706 return builtin->builtin_byte;
707 if (namelen == 7 && memcmp (name, "boolean", 7) == 0)
708 return builtin->builtin_boolean;
711 if (namelen == 4 && memcmp (name, "char", 4) == 0)
712 return builtin->builtin_char;
714 if (namelen == 6 && memcmp (name, "double", 6) == 0)
715 return builtin->builtin_double;
718 if (namelen == 5 && memcmp (name, "float", 5) == 0)
719 return builtin->builtin_float;
722 if (namelen == 3 && memcmp (name, "int", 3) == 0)
723 return builtin->builtin_int;
726 if (namelen == 4 && memcmp (name, "long", 4) == 0)
727 return builtin->builtin_long;
730 if (namelen == 5 && memcmp (name, "short", 5) == 0)
731 return builtin->builtin_short;
734 if (namelen == 4 && memcmp (name, "void", 4) == 0)
735 return builtin->builtin_void;
742 java_primitive_type_name (int signature)
765 error (_("unknown signature '%c' for primitive type"), (char) signature);
768 /* Return the length (in bytes) of demangled name of the Java type
769 signature string SIGNATURE. */
772 java_demangled_signature_length (char *signature)
775 for (; *signature == '['; signature++)
776 array += 2; /* Two chars for "[]". */
777 switch (signature[0])
780 /* Subtract 2 for 'L' and ';'. */
781 return strlen (signature) - 2 + array;
783 return strlen (java_primitive_type_name (signature[0])) + array;
787 /* Demangle the Java type signature SIGNATURE, leaving the result in RESULT. */
790 java_demangled_signature_copy (char *result, char *signature)
795 while (*signature == '[')
800 switch (signature[0])
803 /* Subtract 2 for 'L' and ';', but add 1 for final nul. */
806 for (; *signature != ';' && *signature != '\0'; signature++)
808 if (*signature == '/')
815 ptr = java_primitive_type_name (signature[0]);
817 strcpy (result, ptr);
828 /* Return the demangled name of the Java type signature string SIGNATURE,
829 as a freshly allocated copy. */
832 java_demangle_type_signature (char *signature)
834 int length = java_demangled_signature_length (signature);
835 char *result = xmalloc (length + 1);
836 java_demangled_signature_copy (result, signature);
837 result[length] = '\0';
841 /* Return the type of TYPE followed by DIMS pairs of [ ].
842 If DIMS == 0, TYPE is returned. */
845 java_array_type (struct type *type, int dims)
849 /* FIXME This is bogus! Java arrays are not gdb arrays! */
850 type = lookup_array_range_type (type, 0, 0);
856 /* Create a Java string in the inferior from a (Utf8) literal. */
858 static struct value *
859 java_value_string (char *ptr, int len)
861 error (_("not implemented - java_value_string")); /* FIXME */
864 /* Print the character C on STREAM as part of the contents of a literal
865 string whose delimiter is QUOTER. Note that that format for printing
866 characters and strings is language specific. */
869 java_emit_char (int c, struct type *type, struct ui_file *stream, int quoter)
875 fprintf_filtered (stream, "\\%c", c);
878 fputs_filtered ("\\b", stream);
881 fputs_filtered ("\\t", stream);
884 fputs_filtered ("\\n", stream);
887 fputs_filtered ("\\f", stream);
890 fputs_filtered ("\\r", stream);
894 fputc_filtered (c, stream);
896 fprintf_filtered (stream, "\\u%.4x", (unsigned int) c);
901 static struct value *
902 evaluate_subexp_java (struct type *expect_type, struct expression *exp,
903 int *pos, enum noside noside)
908 enum exp_opcode op = exp->elts[*pos].opcode;
915 if (noside == EVAL_SKIP)
918 arg1 = evaluate_subexp_java (NULL_TYPE, exp, pos, EVAL_NORMAL);
919 if (is_object_type (value_type (arg1)))
923 type = type_from_class (exp->gdbarch, java_class_from_object (arg1));
924 arg1 = value_cast (lookup_pointer_type (type), arg1);
926 if (noside == EVAL_SKIP)
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)
1057 char *demangled_name = java_demangle (physname, DMGL_PARAMS | DMGL_ANSI);
1059 if (demangled_name == NULL)
1062 end = java_find_last_component (demangled_name);
1065 ret = xmalloc (end - demangled_name + 1);
1066 memcpy (ret, demangled_name, end - demangled_name);
1067 ret[end - demangled_name] = '\0';
1070 xfree (demangled_name);
1074 /* Table mapping opcodes into strings for printing operators
1075 and precedences of the operators. */
1077 const struct op_print java_op_print_tab[] =
1079 {",", BINOP_COMMA, PREC_COMMA, 0},
1080 {"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
1081 {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
1082 {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
1083 {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
1084 {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
1085 {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
1086 {"==", BINOP_EQUAL, PREC_EQUAL, 0},
1087 {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
1088 {"<=", BINOP_LEQ, PREC_ORDER, 0},
1089 {">=", BINOP_GEQ, PREC_ORDER, 0},
1090 {">", BINOP_GTR, PREC_ORDER, 0},
1091 {"<", BINOP_LESS, PREC_ORDER, 0},
1092 {">>", BINOP_RSH, PREC_SHIFT, 0},
1093 {"<<", BINOP_LSH, PREC_SHIFT, 0},
1095 {">>>", BINOP_ ? ? ?, PREC_SHIFT, 0},
1097 {"+", BINOP_ADD, PREC_ADD, 0},
1098 {"-", BINOP_SUB, PREC_ADD, 0},
1099 {"*", BINOP_MUL, PREC_MUL, 0},
1100 {"/", BINOP_DIV, PREC_MUL, 0},
1101 {"%", BINOP_REM, PREC_MUL, 0},
1102 {"-", UNOP_NEG, PREC_PREFIX, 0},
1103 {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
1104 {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0},
1105 {"*", UNOP_IND, PREC_PREFIX, 0},
1107 {"instanceof", ? ? ?, ? ? ?, 0},
1109 {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0},
1110 {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0},
1114 enum java_primitive_types
1116 java_primitive_type_int,
1117 java_primitive_type_short,
1118 java_primitive_type_long,
1119 java_primitive_type_byte,
1120 java_primitive_type_boolean,
1121 java_primitive_type_char,
1122 java_primitive_type_float,
1123 java_primitive_type_double,
1124 java_primitive_type_void,
1125 nr_java_primitive_types
1129 java_language_arch_info (struct gdbarch *gdbarch,
1130 struct language_arch_info *lai)
1132 const struct builtin_java_type *builtin = builtin_java_type (gdbarch);
1134 lai->string_char_type = builtin->builtin_char;
1135 lai->primitive_type_vector
1136 = GDBARCH_OBSTACK_CALLOC (gdbarch, nr_java_primitive_types + 1,
1138 lai->primitive_type_vector [java_primitive_type_int]
1139 = builtin->builtin_int;
1140 lai->primitive_type_vector [java_primitive_type_short]
1141 = builtin->builtin_short;
1142 lai->primitive_type_vector [java_primitive_type_long]
1143 = builtin->builtin_long;
1144 lai->primitive_type_vector [java_primitive_type_byte]
1145 = builtin->builtin_byte;
1146 lai->primitive_type_vector [java_primitive_type_boolean]
1147 = builtin->builtin_boolean;
1148 lai->primitive_type_vector [java_primitive_type_char]
1149 = builtin->builtin_char;
1150 lai->primitive_type_vector [java_primitive_type_float]
1151 = builtin->builtin_float;
1152 lai->primitive_type_vector [java_primitive_type_double]
1153 = builtin->builtin_double;
1154 lai->primitive_type_vector [java_primitive_type_void]
1155 = builtin->builtin_void;
1157 lai->bool_type_symbol = "boolean";
1158 lai->bool_type_default = builtin->builtin_boolean;
1161 const struct exp_descriptor exp_descriptor_java =
1163 print_subexp_standard,
1164 operator_length_standard,
1166 dump_subexp_body_standard,
1167 evaluate_subexp_java
1170 const struct language_defn java_language_defn =
1172 "java", /* Language name */
1179 &exp_descriptor_java,
1183 c_printchar, /* Print a character constant */
1184 c_printstr, /* Function to print string constant */
1185 java_emit_char, /* Function to print a single character */
1186 java_print_type, /* Print a type using appropriate syntax */
1187 default_print_typedef, /* Print a typedef using appropriate syntax */
1188 java_val_print, /* Print a value using appropriate syntax */
1189 java_value_print, /* Print a top-level value */
1190 NULL, /* Language specific skip_trampoline */
1191 "this", /* name_of_this */
1192 basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
1193 basic_lookup_transparent_type,/* lookup_transparent_type */
1194 java_demangle, /* Language specific symbol demangler */
1195 java_class_name_from_physname,/* Language specific class name */
1196 java_op_print_tab, /* expression operators for printing */
1197 0, /* not c-style arrays */
1198 0, /* String lower bound */
1199 default_word_break_characters,
1200 default_make_symbol_completion_list,
1201 java_language_arch_info,
1202 default_print_array_index,
1203 default_pass_by_reference,
1209 build_java_types (struct gdbarch *gdbarch)
1211 struct builtin_java_type *builtin_java_type
1212 = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_java_type);
1214 builtin_java_type->builtin_int
1215 = arch_integer_type (gdbarch, 32, 0, "int");
1216 builtin_java_type->builtin_short
1217 = arch_integer_type (gdbarch, 16, 0, "short");
1218 builtin_java_type->builtin_long
1219 = arch_integer_type (gdbarch, 64, 0, "long");
1220 builtin_java_type->builtin_byte
1221 = arch_integer_type (gdbarch, 8, 0, "byte");
1222 builtin_java_type->builtin_boolean
1223 = arch_boolean_type (gdbarch, 8, 0, "boolean");
1224 builtin_java_type->builtin_char
1225 = arch_character_type (gdbarch, 16, 1, "char");
1226 builtin_java_type->builtin_float
1227 = arch_float_type (gdbarch, 32, "float", NULL);
1228 builtin_java_type->builtin_double
1229 = arch_float_type (gdbarch, 64, "double", NULL);
1230 builtin_java_type->builtin_void
1231 = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void");
1233 return builtin_java_type;
1236 static struct gdbarch_data *java_type_data;
1238 const struct builtin_java_type *
1239 builtin_java_type (struct gdbarch *gdbarch)
1241 return gdbarch_data (gdbarch, java_type_data);
1245 _initialize_java_language (void)
1247 jv_dynamics_objfile_data_key
1248 = register_objfile_data_with_cleanup (NULL, jv_per_objfile_free);
1249 jv_type_objfile_data_key
1250 = register_objfile_data_with_cleanup (NULL, jv_clear_object_type);
1252 java_type_data = gdbarch_data_register_post_init (build_java_types);
1254 add_language (&java_language_defn);