| /* Java language support routines for GDB, the GNU debugger. |
| Copyright 1997, 1998, 1999, 2000 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #include "defs.h" |
| #include "symtab.h" |
| #include "gdbtypes.h" |
| #include "expression.h" |
| #include "parser-defs.h" |
| #include "language.h" |
| #include "gdbtypes.h" |
| #include "symtab.h" |
| #include "symfile.h" |
| #include "objfiles.h" |
| #include "gdb_string.h" |
| #include "value.h" |
| #include "c-lang.h" |
| #include "jv-lang.h" |
| #include "gdbcore.h" |
| #include <ctype.h> |
| |
| struct type *java_int_type; |
| struct type *java_byte_type; |
| struct type *java_short_type; |
| struct type *java_long_type; |
| struct type *java_boolean_type; |
| struct type *java_char_type; |
| struct type *java_float_type; |
| struct type *java_double_type; |
| struct type *java_void_type; |
| |
| /* Local functions */ |
| |
| extern void _initialize_java_language (void); |
| |
| static int java_demangled_signature_length (char *); |
| static void java_demangled_signature_copy (char *, char *); |
| |
| static struct symtab *get_java_class_symtab (void); |
| static char *get_java_utf8_name (struct obstack *obstack, struct value *name); |
| static int java_class_is_primitive (struct value *clas); |
| static struct type *java_lookup_type (char *signature); |
| static struct value *java_value_string (char *ptr, int len); |
| |
| static void java_emit_char (int c, struct ui_file * stream, int quoter); |
| |
| /* This objfile contains symtabs that have been dynamically created |
| to record dynamically loaded Java classes and dynamically |
| compiled java methods. */ |
| |
| static struct objfile *dynamics_objfile = NULL; |
| |
| static struct type *java_link_class_type (struct type *, struct value *); |
| |
| static struct objfile * |
| get_dynamics_objfile (void) |
| { |
| if (dynamics_objfile == NULL) |
| { |
| dynamics_objfile = allocate_objfile (NULL, 0); |
| } |
| return dynamics_objfile; |
| } |
| |
| #if 1 |
| /* symtab contains classes read from the inferior. */ |
| |
| static struct symtab *class_symtab = NULL; |
| |
| /* Maximum number of class in class_symtab before relocation is needed. */ |
| |
| static int class_symtab_space; |
| |
| static struct symtab * |
| get_java_class_symtab (void) |
| { |
| if (class_symtab == NULL) |
| { |
| struct objfile *objfile = get_dynamics_objfile (); |
| struct blockvector *bv; |
| struct block *bl; |
| class_symtab = allocate_symtab ("<java-classes>", objfile); |
| class_symtab->language = language_java; |
| bv = (struct blockvector *) |
| obstack_alloc (&objfile->symbol_obstack, sizeof (struct blockvector)); |
| BLOCKVECTOR_NBLOCKS (bv) = 1; |
| BLOCKVECTOR (class_symtab) = bv; |
| |
| /* Allocate dummy STATIC_BLOCK. */ |
| bl = (struct block *) |
| obstack_alloc (&objfile->symbol_obstack, sizeof (struct block)); |
| BLOCK_NSYMS (bl) = 0; |
| BLOCK_HASHTABLE (bl) = 0; |
| BLOCK_START (bl) = 0; |
| BLOCK_END (bl) = 0; |
| BLOCK_FUNCTION (bl) = NULL; |
| BLOCK_SUPERBLOCK (bl) = NULL; |
| BLOCK_GCC_COMPILED (bl) = 0; |
| BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK) = bl; |
| |
| /* Allocate GLOBAL_BLOCK. This has to be relocatable. */ |
| class_symtab_space = 128; |
| bl = xmmalloc (objfile->md, |
| sizeof (struct block) |
| + ((class_symtab_space - 1) * sizeof (struct symbol *))); |
| *bl = *BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); |
| BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = bl; |
| class_symtab->free_ptr = (char *) bl; |
| } |
| return class_symtab; |
| } |
| |
| static void |
| add_class_symtab_symbol (struct symbol *sym) |
| { |
| struct symtab *symtab = get_java_class_symtab (); |
| struct blockvector *bv = BLOCKVECTOR (symtab); |
| struct block *bl = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); |
| if (BLOCK_NSYMS (bl) >= class_symtab_space) |
| { |
| /* Need to re-allocate. */ |
| class_symtab_space *= 2; |
| bl = xmrealloc (symtab->objfile->md, bl, |
| sizeof (struct block) |
| + ((class_symtab_space - 1) * sizeof (struct symbol *))); |
| class_symtab->free_ptr = (char *) bl; |
| BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = bl; |
| } |
| |
| BLOCK_SYM (bl, BLOCK_NSYMS (bl)) = sym; |
| BLOCK_NSYMS (bl) = BLOCK_NSYMS (bl) + 1; |
| } |
| |
| static struct symbol *add_class_symbol (struct type *type, CORE_ADDR addr); |
| |
| static struct symbol * |
| add_class_symbol (struct type *type, CORE_ADDR addr) |
| { |
| struct symbol *sym; |
| sym = (struct symbol *) |
| obstack_alloc (&dynamics_objfile->symbol_obstack, sizeof (struct symbol)); |
| memset (sym, 0, sizeof (struct symbol)); |
| SYMBOL_LANGUAGE (sym) = language_java; |
| SYMBOL_NAME (sym) = TYPE_TAG_NAME (type); |
| SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
| /* SYMBOL_VALUE (sym) = valu; */ |
| SYMBOL_TYPE (sym) = type; |
| SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE; |
| SYMBOL_VALUE_ADDRESS (sym) = addr; |
| return sym; |
| } |
| #endif |
| |
| struct type * |
| java_lookup_class (char *name) |
| { |
| struct symbol *sym; |
| sym = lookup_symbol (name, expression_context_block, STRUCT_NAMESPACE, |
| (int *) 0, (struct symtab **) NULL); |
| if (sym != NULL) |
| return SYMBOL_TYPE (sym); |
| #if 0 |
| CORE_ADDR addr; |
| if (called from parser) |
| { |
| call lookup_class (or similar) in inferior; |
| if not |
| found: |
| return NULL; |
| addr = found in inferior; |
| } |
| else |
| addr = 0; |
| struct type *type; |
| type = alloc_type (objfile); |
| TYPE_CODE (type) = TYPE_CODE_STRUCT; |
| INIT_CPLUS_SPECIFIC (type); |
| TYPE_TAG_NAME (type) = obsavestring (name, strlen (name), &objfile->type_obstack); |
| TYPE_FLAGS (type) |= TYPE_FLAG_STUB; |
| TYPE ? = addr; |
| return type; |
| #else |
| /* FIXME - should search inferior's symbol table. */ |
| return NULL; |
| #endif |
| } |
| |
| /* Return a nul-terminated string (allocated on OBSTACK) for |
| a name given by NAME (which has type Utf8Const*). */ |
| |
| char * |
| get_java_utf8_name (struct obstack *obstack, struct value *name) |
| { |
| char *chrs; |
| struct value *temp = name; |
| int name_length; |
| CORE_ADDR data_addr; |
| temp = value_struct_elt (&temp, NULL, "length", NULL, "structure"); |
| name_length = (int) value_as_long (temp); |
| data_addr = VALUE_ADDRESS (temp) + VALUE_OFFSET (temp) |
| + TYPE_LENGTH (VALUE_TYPE (temp)); |
| chrs = obstack_alloc (obstack, name_length + 1); |
| chrs[name_length] = '\0'; |
| read_memory (data_addr, chrs, name_length); |
| return chrs; |
| } |
| |
| struct value * |
| java_class_from_object (struct value *obj_val) |
| { |
| /* This is all rather inefficient, since the offsets of vtable and |
| class are fixed. FIXME */ |
| struct value *vtable_val; |
| |
| if (TYPE_CODE (VALUE_TYPE (obj_val)) == TYPE_CODE_PTR |
| && TYPE_LENGTH (TYPE_TARGET_TYPE (VALUE_TYPE (obj_val))) == 0) |
| obj_val = value_at (get_java_object_type (), |
| value_as_address (obj_val), NULL); |
| |
| vtable_val = value_struct_elt (&obj_val, NULL, "vtable", NULL, "structure"); |
| return value_struct_elt (&vtable_val, NULL, "class", NULL, "structure"); |
| } |
| |
| /* Check if CLASS_IS_PRIMITIVE(value of clas): */ |
| static int |
| java_class_is_primitive (struct value *clas) |
| { |
| struct value *vtable = value_struct_elt (&clas, NULL, "vtable", NULL, "struct"); |
| CORE_ADDR i = value_as_address (vtable); |
| return (int) (i & 0x7fffffff) == (int) 0x7fffffff; |
| } |
| |
| /* Read a GCJ Class object, and generated a gdb (TYPE_CODE_STRUCT) type. */ |
| |
| struct type * |
| type_from_class (struct value *clas) |
| { |
| struct type *type; |
| char *name; |
| struct value *temp; |
| struct objfile *objfile; |
| struct value *utf8_name; |
| char *nptr; |
| CORE_ADDR addr; |
| struct block *bl; |
| int i; |
| int is_array = 0; |
| |
| type = check_typedef (VALUE_TYPE (clas)); |
| if (TYPE_CODE (type) == TYPE_CODE_PTR) |
| { |
| if (value_logical_not (clas)) |
| return NULL; |
| clas = value_ind (clas); |
| } |
| addr = VALUE_ADDRESS (clas) + VALUE_OFFSET (clas); |
| |
| #if 0 |
| get_java_class_symtab (); |
| bl = BLOCKVECTOR_BLOCK (BLOCKVECTOR (class_symtab), GLOBAL_BLOCK); |
| for (i = BLOCK_NSYMS (bl); --i >= 0;) |
| { |
| struct symbol *sym = BLOCK_SYM (bl, i); |
| if (SYMBOL_VALUE_ADDRESS (sym) == addr) |
| return SYMBOL_TYPE (sym); |
| } |
| #endif |
| |
| objfile = get_dynamics_objfile (); |
| if (java_class_is_primitive (clas)) |
| { |
| struct value *sig; |
| temp = clas; |
| sig = value_struct_elt (&temp, NULL, "method_count", NULL, "structure"); |
| return java_primitive_type (value_as_long (sig)); |
| } |
| |
| /* Get Class name. */ |
| /* if clasloader non-null, prepend loader address. FIXME */ |
| temp = clas; |
| utf8_name = value_struct_elt (&temp, NULL, "name", NULL, "structure"); |
| name = get_java_utf8_name (&objfile->type_obstack, utf8_name); |
| for (nptr = name; *nptr != 0; nptr++) |
| { |
| if (*nptr == '/') |
| *nptr = '.'; |
| } |
| |
| type = java_lookup_class (name); |
| if (type != NULL) |
| return type; |
| |
| type = alloc_type (objfile); |
| TYPE_CODE (type) = TYPE_CODE_STRUCT; |
| INIT_CPLUS_SPECIFIC (type); |
| |
| if (name[0] == '[') |
| { |
| char *signature = name; |
| int namelen = java_demangled_signature_length (signature); |
| if (namelen > strlen (name)) |
| name = obstack_alloc (&objfile->type_obstack, namelen + 1); |
| java_demangled_signature_copy (name, signature); |
| name[namelen] = '\0'; |
| is_array = 1; |
| temp = clas; |
| /* Set array element type. */ |
| temp = value_struct_elt (&temp, NULL, "methods", NULL, "structure"); |
| VALUE_TYPE (temp) = lookup_pointer_type (VALUE_TYPE (clas)); |
| TYPE_TARGET_TYPE (type) = type_from_class (temp); |
| } |
| |
| ALLOCATE_CPLUS_STRUCT_TYPE (type); |
| TYPE_TAG_NAME (type) = name; |
| |
| add_class_symtab_symbol (add_class_symbol (type, addr)); |
| return java_link_class_type (type, clas); |
| } |
| |
| /* Fill in class TYPE with data from the CLAS value. */ |
| |
| struct type * |
| java_link_class_type (struct type *type, struct value *clas) |
| { |
| struct value *temp; |
| char *unqualified_name; |
| char *name = TYPE_TAG_NAME (type); |
| int ninterfaces, nfields, nmethods; |
| int type_is_object = 0; |
| struct fn_field *fn_fields; |
| struct fn_fieldlist *fn_fieldlists; |
| struct value *fields; |
| struct value *methods; |
| struct value *method = NULL; |
| struct value *field = NULL; |
| int i, j; |
| struct objfile *objfile = get_dynamics_objfile (); |
| struct type *tsuper; |
| |
| unqualified_name = strrchr (name, '.'); |
| if (unqualified_name == NULL) |
| unqualified_name = name; |
| |
| temp = clas; |
| temp = value_struct_elt (&temp, NULL, "superclass", NULL, "structure"); |
| if (name != NULL && strcmp (name, "java.lang.Object") == 0) |
| { |
| tsuper = get_java_object_type (); |
| if (tsuper && TYPE_CODE (tsuper) == TYPE_CODE_PTR) |
| tsuper = TYPE_TARGET_TYPE (tsuper); |
| type_is_object = 1; |
| } |
| else |
| tsuper = type_from_class (temp); |
| |
| #if 1 |
| ninterfaces = 0; |
| #else |
| temp = clas; |
| ninterfaces = value_as_long (value_struct_elt (&temp, NULL, "interface_len", NULL, "structure")); |
| #endif |
| TYPE_N_BASECLASSES (type) = (tsuper == NULL ? 0 : 1) + ninterfaces; |
| temp = clas; |
| nfields = value_as_long (value_struct_elt (&temp, NULL, "field_count", NULL, "structure")); |
| nfields += TYPE_N_BASECLASSES (type); |
| nfields++; /* Add one for dummy "class" field. */ |
| TYPE_NFIELDS (type) = nfields; |
| TYPE_FIELDS (type) = (struct field *) |
| TYPE_ALLOC (type, sizeof (struct field) * nfields); |
| |
| memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); |
| |
| TYPE_FIELD_PRIVATE_BITS (type) = |
| (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); |
| B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); |
| |
| TYPE_FIELD_PROTECTED_BITS (type) = |
| (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); |
| B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); |
| |
| TYPE_FIELD_IGNORE_BITS (type) = |
| (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); |
| B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); |
| |
| TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) |
| TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type))); |
| B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type)); |
| |
| if (tsuper != NULL) |
| { |
| TYPE_BASECLASS (type, 0) = tsuper; |
| if (type_is_object) |
| SET_TYPE_FIELD_PRIVATE (type, 0); |
| } |
| |
| i = strlen (name); |
| if (i > 2 && name[i - 1] == ']' && tsuper != NULL) |
| { |
| /* FIXME */ |
| TYPE_LENGTH (type) = TYPE_LENGTH (tsuper) + 4; /* size with "length" */ |
| } |
| else |
| { |
| temp = clas; |
| temp = value_struct_elt (&temp, NULL, "size_in_bytes", NULL, "structure"); |
| TYPE_LENGTH (type) = value_as_long (temp); |
| } |
| |
| fields = NULL; |
| nfields--; /* First set up dummy "class" field. */ |
| SET_FIELD_PHYSADDR (TYPE_FIELD (type, nfields), |
| VALUE_ADDRESS (clas) + VALUE_OFFSET (clas)); |
| TYPE_FIELD_NAME (type, nfields) = "class"; |
| TYPE_FIELD_TYPE (type, nfields) = VALUE_TYPE (clas); |
| SET_TYPE_FIELD_PRIVATE (type, nfields); |
| |
| for (i = TYPE_N_BASECLASSES (type); i < nfields; i++) |
| { |
| int accflags; |
| int boffset; |
| if (fields == NULL) |
| { |
| temp = clas; |
| fields = value_struct_elt (&temp, NULL, "fields", NULL, "structure"); |
| field = value_ind (fields); |
| } |
| else |
| { /* Re-use field value for next field. */ |
| VALUE_ADDRESS (field) += TYPE_LENGTH (VALUE_TYPE (field)); |
| VALUE_LAZY (field) = 1; |
| } |
| temp = field; |
| temp = value_struct_elt (&temp, NULL, "name", NULL, "structure"); |
| TYPE_FIELD_NAME (type, i) = |
| get_java_utf8_name (&objfile->type_obstack, temp); |
| temp = field; |
| accflags = value_as_long (value_struct_elt (&temp, NULL, "accflags", |
| NULL, "structure")); |
| temp = field; |
| temp = value_struct_elt (&temp, NULL, "info", NULL, "structure"); |
| boffset = value_as_long (value_struct_elt (&temp, NULL, "boffset", |
| NULL, "structure")); |
| if (accflags & 0x0001) /* public access */ |
| { |
| /* ??? */ |
| } |
| if (accflags & 0x0002) /* private access */ |
| { |
| SET_TYPE_FIELD_PRIVATE (type, i); |
| } |
| if (accflags & 0x0004) /* protected access */ |
| { |
| SET_TYPE_FIELD_PROTECTED (type, i); |
| } |
| if (accflags & 0x0008) /* ACC_STATIC */ |
| SET_FIELD_PHYSADDR (TYPE_FIELD (type, i), boffset); |
| else |
| TYPE_FIELD_BITPOS (type, i) = 8 * boffset; |
| if (accflags & 0x8000) /* FIELD_UNRESOLVED_FLAG */ |
| { |
| TYPE_FIELD_TYPE (type, i) = get_java_object_type (); /* FIXME */ |
| } |
| else |
| { |
| struct type *ftype; |
| temp = field; |
| temp = value_struct_elt (&temp, NULL, "type", NULL, "structure"); |
| ftype = type_from_class (temp); |
| if (TYPE_CODE (ftype) == TYPE_CODE_STRUCT) |
| ftype = lookup_pointer_type (ftype); |
| TYPE_FIELD_TYPE (type, i) = ftype; |
| } |
| } |
| |
| temp = clas; |
| nmethods = value_as_long (value_struct_elt (&temp, NULL, "method_count", |
| NULL, "structure")); |
| TYPE_NFN_FIELDS_TOTAL (type) = nmethods; |
| j = nmethods * sizeof (struct fn_field); |
| fn_fields = (struct fn_field *) |
| obstack_alloc (&dynamics_objfile->symbol_obstack, j); |
| memset (fn_fields, 0, j); |
| fn_fieldlists = (struct fn_fieldlist *) |
| alloca (nmethods * sizeof (struct fn_fieldlist)); |
| |
| methods = NULL; |
| for (i = 0; i < nmethods; i++) |
| { |
| char *mname; |
| int k; |
| if (methods == NULL) |
| { |
| temp = clas; |
| methods = value_struct_elt (&temp, NULL, "methods", NULL, "structure"); |
| method = value_ind (methods); |
| } |
| else |
| { /* Re-use method value for next method. */ |
| VALUE_ADDRESS (method) += TYPE_LENGTH (VALUE_TYPE (method)); |
| VALUE_LAZY (method) = 1; |
| } |
| |
| /* Get method name. */ |
| temp = method; |
| temp = value_struct_elt (&temp, NULL, "name", NULL, "structure"); |
| mname = get_java_utf8_name (&objfile->type_obstack, temp); |
| if (strcmp (mname, "<init>") == 0) |
| mname = unqualified_name; |
| |
| /* Check for an existing method with the same name. |
| * This makes building the fn_fieldslists an O(nmethods**2) |
| * operation. That could be using hashing, but I doubt it |
| * is worth it. Note that we do maintain the order of methods |
| * in the inferior's Method table (as long as that is grouped |
| * by method name), which I think is desirable. --PB */ |
| for (k = 0, j = TYPE_NFN_FIELDS (type);;) |
| { |
| if (--j < 0) |
| { /* No match - new method name. */ |
| j = TYPE_NFN_FIELDS (type)++; |
| fn_fieldlists[j].name = mname; |
| fn_fieldlists[j].length = 1; |
| fn_fieldlists[j].fn_fields = &fn_fields[i]; |
| k = i; |
| break; |
| } |
| if (strcmp (mname, fn_fieldlists[j].name) == 0) |
| { /* Found an existing method with the same name. */ |
| int l; |
| if (mname != unqualified_name) |
| obstack_free (&objfile->type_obstack, mname); |
| mname = fn_fieldlists[j].name; |
| fn_fieldlists[j].length++; |
| k = i - k; /* Index of new slot. */ |
| /* Shift intervening fn_fields (between k and i) down. */ |
| for (l = i; l > k; l--) |
| fn_fields[l] = fn_fields[l - 1]; |
| for (l = TYPE_NFN_FIELDS (type); --l > j;) |
| fn_fieldlists[l].fn_fields++; |
| break; |
| } |
| k += fn_fieldlists[j].length; |
| } |
| fn_fields[k].physname = ""; |
| fn_fields[k].is_stub = 1; |
| fn_fields[k].type = make_function_type (java_void_type, NULL); /* FIXME */ |
| TYPE_CODE (fn_fields[k].type) = TYPE_CODE_METHOD; |
| } |
| |
| j = TYPE_NFN_FIELDS (type) * sizeof (struct fn_fieldlist); |
| TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) |
| obstack_alloc (&dynamics_objfile->symbol_obstack, j); |
| memcpy (TYPE_FN_FIELDLISTS (type), fn_fieldlists, j); |
| |
| return type; |
| } |
| |
| static struct type *java_object_type; |
| |
| struct type * |
| get_java_object_type (void) |
| { |
| if (java_object_type == NULL) |
| { |
| struct symbol *sym; |
| sym = lookup_symbol ("java.lang.Object", NULL, STRUCT_NAMESPACE, |
| (int *) 0, (struct symtab **) NULL); |
| if (sym == NULL) |
| error ("cannot find java.lang.Object"); |
| java_object_type = SYMBOL_TYPE (sym); |
| } |
| return java_object_type; |
| } |
| |
| int |
| get_java_object_header_size (void) |
| { |
| struct type *objtype = get_java_object_type (); |
| if (objtype == NULL) |
| return (2 * TARGET_PTR_BIT / TARGET_CHAR_BIT); |
| else |
| return TYPE_LENGTH (objtype); |
| } |
| |
| int |
| is_object_type (struct type *type) |
| { |
| CHECK_TYPEDEF (type); |
| if (TYPE_CODE (type) == TYPE_CODE_PTR) |
| { |
| struct type *ttype = check_typedef (TYPE_TARGET_TYPE (type)); |
| char *name; |
| if (TYPE_CODE (ttype) != TYPE_CODE_STRUCT) |
| return 0; |
| while (TYPE_N_BASECLASSES (ttype) > 0) |
| ttype = TYPE_BASECLASS (ttype, 0); |
| name = TYPE_TAG_NAME (ttype); |
| if (name != NULL && strcmp (name, "java.lang.Object") == 0) |
| return 1; |
| name = TYPE_NFIELDS (ttype) > 0 ? TYPE_FIELD_NAME (ttype, 0) : (char *) 0; |
| if (name != NULL && strcmp (name, "vtable") == 0) |
| { |
| if (java_object_type == NULL) |
| java_object_type = type; |
| return 1; |
| } |
| } |
| return 0; |
| } |
| |
| struct type * |
| java_primitive_type (int signature) |
| { |
| switch (signature) |
| { |
| case 'B': |
| return java_byte_type; |
| case 'S': |
| return java_short_type; |
| case 'I': |
| return java_int_type; |
| case 'J': |
| return java_long_type; |
| case 'Z': |
| return java_boolean_type; |
| case 'C': |
| return java_char_type; |
| case 'F': |
| return java_float_type; |
| case 'D': |
| return java_double_type; |
| case 'V': |
| return java_void_type; |
| } |
| error ("unknown signature '%c' for primitive type", (char) signature); |
| } |
| |
| /* If name[0 .. namelen-1] is the name of a primitive Java type, |
| return that type. Otherwise, return NULL. */ |
| |
| struct type * |
| java_primitive_type_from_name (char *name, int namelen) |
| { |
| switch (name[0]) |
| { |
| case 'b': |
| if (namelen == 4 && memcmp (name, "byte", 4) == 0) |
| return java_byte_type; |
| if (namelen == 7 && memcmp (name, "boolean", 7) == 0) |
| return java_boolean_type; |
| break; |
| case 'c': |
| if (namelen == 4 && memcmp (name, "char", 4) == 0) |
| return java_char_type; |
| case 'd': |
| if (namelen == 6 && memcmp (name, "double", 6) == 0) |
| return java_double_type; |
| break; |
| case 'f': |
| if (namelen == 5 && memcmp (name, "float", 5) == 0) |
| return java_float_type; |
| break; |
| case 'i': |
| if (namelen == 3 && memcmp (name, "int", 3) == 0) |
| return java_int_type; |
| break; |
| case 'l': |
| if (namelen == 4 && memcmp (name, "long", 4) == 0) |
| return java_long_type; |
| break; |
| case 's': |
| if (namelen == 5 && memcmp (name, "short", 5) == 0) |
| return java_short_type; |
| break; |
| case 'v': |
| if (namelen == 4 && memcmp (name, "void", 4) == 0) |
| return java_void_type; |
| break; |
| } |
| return NULL; |
| } |
| |
| /* Return the length (in bytes) of demangled name of the Java type |
| signature string SIGNATURE. */ |
| |
| static int |
| java_demangled_signature_length (char *signature) |
| { |
| int array = 0; |
| for (; *signature == '['; signature++) |
| array += 2; /* Two chars for "[]". */ |
| switch (signature[0]) |
| { |
| case 'L': |
| /* Subtract 2 for 'L' and ';'. */ |
| return strlen (signature) - 2 + array; |
| default: |
| return strlen (TYPE_NAME (java_primitive_type (signature[0]))) + array; |
| } |
| } |
| |
| /* Demangle the Java type signature SIGNATURE, leaving the result in RESULT. */ |
| |
| static void |
| java_demangled_signature_copy (char *result, char *signature) |
| { |
| int array = 0; |
| char *ptr; |
| int i; |
| while (*signature == '[') |
| { |
| array++; |
| signature++; |
| } |
| switch (signature[0]) |
| { |
| case 'L': |
| /* Subtract 2 for 'L' and ';', but add 1 for final nul. */ |
| signature++; |
| ptr = result; |
| for (; *signature != ';' && *signature != '\0'; signature++) |
| { |
| if (*signature == '/') |
| *ptr++ = '.'; |
| else |
| *ptr++ = *signature; |
| } |
| break; |
| default: |
| ptr = TYPE_NAME (java_primitive_type (signature[0])); |
| i = strlen (ptr); |
| strcpy (result, ptr); |
| ptr = result + i; |
| break; |
| } |
| while (--array >= 0) |
| { |
| *ptr++ = '['; |
| *ptr++ = ']'; |
| } |
| } |
| |
| /* Return the demangled name of the Java type signature string SIGNATURE, |
| as a freshly allocated copy. */ |
| |
| char * |
| java_demangle_type_signature (char *signature) |
| { |
| int length = java_demangled_signature_length (signature); |
| char *result = xmalloc (length + 1); |
| java_demangled_signature_copy (result, signature); |
| result[length] = '\0'; |
| return result; |
| } |
| |
| struct type * |
| java_lookup_type (char *signature) |
| { |
| switch (signature[0]) |
| { |
| case 'L': |
| case '[': |
| error ("java_lookup_type not fully implemented"); |
| default: |
| return java_primitive_type (signature[0]); |
| } |
| } |
| |
| /* Return the type of TYPE followed by DIMS pairs of [ ]. |
| If DIMS == 0, TYPE is returned. */ |
| |
| struct type * |
| java_array_type (struct type *type, int dims) |
| { |
| struct type *range_type; |
| |
| while (dims-- > 0) |
| { |
| range_type = create_range_type (NULL, builtin_type_int, 0, 0); |
| /* FIXME This is bogus! Java arrays are not gdb arrays! */ |
| type = create_array_type (NULL, type, range_type); |
| } |
| |
| return type; |
| } |
| |
| /* Create a Java string in the inferior from a (Utf8) literal. */ |
| |
| static struct value * |
| java_value_string (char *ptr, int len) |
| { |
| error ("not implemented - java_value_string"); /* FIXME */ |
| } |
| |
| /* Print the character C on STREAM as part of the contents of a literal |
| string whose delimiter is QUOTER. Note that that format for printing |
| characters and strings is language specific. */ |
| |
| static void |
| java_emit_char (int c, struct ui_file *stream, int quoter) |
| { |
| switch (c) |
| { |
| case '\\': |
| case '\'': |
| fprintf_filtered (stream, "\\%c", c); |
| break; |
| case '\b': |
| fputs_filtered ("\\b", stream); |
| break; |
| case '\t': |
| fputs_filtered ("\\t", stream); |
| break; |
| case '\n': |
| fputs_filtered ("\\n", stream); |
| break; |
| case '\f': |
| fputs_filtered ("\\f", stream); |
| break; |
| case '\r': |
| fputs_filtered ("\\r", stream); |
| break; |
| default: |
| if (isprint (c)) |
| fputc_filtered (c, stream); |
| else |
| fprintf_filtered (stream, "\\u%.4x", (unsigned int) c); |
| break; |
| } |
| } |
| |
| static struct value * |
| evaluate_subexp_java (struct type *expect_type, register struct expression *exp, |
| register int *pos, enum noside noside) |
| { |
| int pc = *pos; |
| int i; |
| char *name; |
| enum exp_opcode op = exp->elts[*pos].opcode; |
| struct value *arg1; |
| struct value *arg2; |
| struct type *type; |
| switch (op) |
| { |
| case UNOP_IND: |
| if (noside == EVAL_SKIP) |
| goto standard; |
| (*pos)++; |
| arg1 = evaluate_subexp_java (NULL_TYPE, exp, pos, EVAL_NORMAL); |
| if (is_object_type (VALUE_TYPE (arg1))) |
| { |
| struct type *type; |
| |
| type = type_from_class (java_class_from_object (arg1)); |
| arg1 = value_cast (lookup_pointer_type (type), arg1); |
| } |
| if (noside == EVAL_SKIP) |
| goto nosideret; |
| return value_ind (arg1); |
| |
| case BINOP_SUBSCRIPT: |
| (*pos)++; |
| arg1 = evaluate_subexp_with_coercion (exp, pos, noside); |
| arg2 = evaluate_subexp_with_coercion (exp, pos, noside); |
| if (noside == EVAL_SKIP) |
| goto nosideret; |
| /* If the user attempts to subscript something that is not an |
| array or pointer type (like a plain int variable for example), |
| then report this as an error. */ |
| |
| COERCE_REF (arg1); |
| type = check_typedef (VALUE_TYPE (arg1)); |
| if (TYPE_CODE (type) == TYPE_CODE_PTR) |
| type = check_typedef (TYPE_TARGET_TYPE (type)); |
| name = TYPE_NAME (type); |
| if (name == NULL) |
| name = TYPE_TAG_NAME (type); |
| i = name == NULL ? 0 : strlen (name); |
| if (TYPE_CODE (type) == TYPE_CODE_STRUCT |
| && i > 2 && name[i - 1] == ']') |
| { |
| CORE_ADDR address; |
| long length, index; |
| struct type *el_type; |
| char buf4[4]; |
| |
| struct value *clas = java_class_from_object (arg1); |
| struct value *temp = clas; |
| /* Get CLASS_ELEMENT_TYPE of the array type. */ |
| temp = value_struct_elt (&temp, NULL, "methods", |
| NULL, "structure"); |
| VALUE_TYPE (temp) = VALUE_TYPE (clas); |
| el_type = type_from_class (temp); |
| if (TYPE_CODE (el_type) == TYPE_CODE_STRUCT) |
| el_type = lookup_pointer_type (el_type); |
| |
| if (noside == EVAL_AVOID_SIDE_EFFECTS) |
| return value_zero (el_type, VALUE_LVAL (arg1)); |
| address = value_as_address (arg1); |
| address += JAVA_OBJECT_SIZE; |
| read_memory (address, buf4, 4); |
| length = (long) extract_signed_integer (buf4, 4); |
| index = (long) value_as_long (arg2); |
| if (index >= length || index < 0) |
| error ("array index (%ld) out of bounds (length: %ld)", |
| index, length); |
| address = (address + 4) + index * TYPE_LENGTH (el_type); |
| return value_at (el_type, address, NULL); |
| } |
| else if (TYPE_CODE (type) == TYPE_CODE_ARRAY) |
| { |
| if (noside == EVAL_AVOID_SIDE_EFFECTS) |
| return value_zero (TYPE_TARGET_TYPE (type), VALUE_LVAL (arg1)); |
| else |
| return value_subscript (arg1, arg2); |
| } |
| if (name) |
| error ("cannot subscript something of type `%s'", name); |
| else |
| error ("cannot subscript requested type"); |
| |
| case OP_STRING: |
| (*pos)++; |
| i = longest_to_int (exp->elts[pc + 1].longconst); |
| (*pos) += 3 + BYTES_TO_EXP_ELEM (i + 1); |
| if (noside == EVAL_SKIP) |
| goto nosideret; |
| return java_value_string (&exp->elts[pc + 2].string, i); |
| |
| case STRUCTOP_STRUCT: |
| arg1 = evaluate_subexp_standard (expect_type, exp, pos, noside); |
| /* Convert object field (such as TYPE.class) to reference. */ |
| if (TYPE_CODE (VALUE_TYPE (arg1)) == TYPE_CODE_STRUCT) |
| arg1 = value_addr (arg1); |
| return arg1; |
| default: |
| break; |
| } |
| standard: |
| return evaluate_subexp_standard (expect_type, exp, pos, noside); |
| nosideret: |
| return value_from_longest (builtin_type_long, (LONGEST) 1); |
| } |
| |
| static struct type * |
| java_create_fundamental_type (struct objfile *objfile, int typeid) |
| { |
| switch (typeid) |
| { |
| case FT_VOID: |
| return java_void_type; |
| case FT_BOOLEAN: |
| return java_boolean_type; |
| case FT_CHAR: |
| return java_char_type; |
| case FT_FLOAT: |
| return java_float_type; |
| case FT_DBL_PREC_FLOAT: |
| return java_double_type; |
| case FT_BYTE: |
| case FT_SIGNED_CHAR: |
| return java_byte_type; |
| case FT_SHORT: |
| case FT_SIGNED_SHORT: |
| return java_short_type; |
| case FT_INTEGER: |
| case FT_SIGNED_INTEGER: |
| return java_int_type; |
| case FT_LONG: |
| case FT_SIGNED_LONG: |
| return java_long_type; |
| } |
| return c_create_fundamental_type (objfile, typeid); |
| } |
| |
| /* Table mapping opcodes into strings for printing operators |
| and precedences of the operators. */ |
| |
| const struct op_print java_op_print_tab[] = |
| { |
| {",", BINOP_COMMA, PREC_COMMA, 0}, |
| {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, |
| {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, |
| {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, |
| {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, |
| {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, |
| {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, |
| {"==", BINOP_EQUAL, PREC_EQUAL, 0}, |
| {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, |
| {"<=", BINOP_LEQ, PREC_ORDER, 0}, |
| {">=", BINOP_GEQ, PREC_ORDER, 0}, |
| {">", BINOP_GTR, PREC_ORDER, 0}, |
| {"<", BINOP_LESS, PREC_ORDER, 0}, |
| {">>", BINOP_RSH, PREC_SHIFT, 0}, |
| {"<<", BINOP_LSH, PREC_SHIFT, 0}, |
| #if 0 |
| {">>>", BINOP_ ? ? ?, PREC_SHIFT, 0}, |
| #endif |
| {"+", BINOP_ADD, PREC_ADD, 0}, |
| {"-", BINOP_SUB, PREC_ADD, 0}, |
| {"*", BINOP_MUL, PREC_MUL, 0}, |
| {"/", BINOP_DIV, PREC_MUL, 0}, |
| {"%", BINOP_REM, PREC_MUL, 0}, |
| {"-", UNOP_NEG, PREC_PREFIX, 0}, |
| {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, |
| {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, |
| {"*", UNOP_IND, PREC_PREFIX, 0}, |
| #if 0 |
| {"instanceof", ? ? ?, ? ? ?, 0}, |
| #endif |
| {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, |
| {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, |
| {NULL, 0, 0, 0} |
| }; |
| |
| const struct language_defn java_language_defn = |
| { |
| "java", /* Language name */ |
| language_java, |
| c_builtin_types, |
| range_check_off, |
| type_check_off, |
| case_sensitive_on, |
| java_parse, |
| java_error, |
| evaluate_subexp_java, |
| c_printchar, /* Print a character constant */ |
| c_printstr, /* Function to print string constant */ |
| java_emit_char, /* Function to print a single character */ |
| java_create_fundamental_type, /* Create fundamental type in this language */ |
| java_print_type, /* Print a type using appropriate syntax */ |
| java_val_print, /* Print a value using appropriate syntax */ |
| java_value_print, /* Print a top-level value */ |
| {"", "", "", ""}, /* Binary format info */ |
| {"0%lo", "0", "o", ""}, /* Octal format info */ |
| {"%ld", "", "d", ""}, /* Decimal format info */ |
| {"0x%lx", "0x", "x", ""}, /* Hex format info */ |
| java_op_print_tab, /* expression operators for printing */ |
| 0, /* not c-style arrays */ |
| 0, /* String lower bound */ |
| &builtin_type_char, /* Type of string elements */ |
| LANG_MAGIC |
| }; |
| |
| void |
| _initialize_java_language (void) |
| { |
| |
| java_int_type = init_type (TYPE_CODE_INT, 4, 0, "int", NULL); |
| java_short_type = init_type (TYPE_CODE_INT, 2, 0, "short", NULL); |
| java_long_type = init_type (TYPE_CODE_INT, 8, 0, "long", NULL); |
| java_byte_type = init_type (TYPE_CODE_INT, 1, 0, "byte", NULL); |
| java_boolean_type = init_type (TYPE_CODE_BOOL, 1, 0, "boolean", NULL); |
| java_char_type = init_type (TYPE_CODE_CHAR, 2, TYPE_FLAG_UNSIGNED, "char", NULL); |
| java_float_type = init_type (TYPE_CODE_FLT, 4, 0, "float", NULL); |
| java_double_type = init_type (TYPE_CODE_FLT, 8, 0, "double", NULL); |
| java_void_type = init_type (TYPE_CODE_VOID, 1, 0, "void", NULL); |
| |
| add_language (&java_language_defn); |
| } |
| |
| /* Cleanup code that should be run on every "run". |
| We should use make_run_cleanup to have this be called. |
| But will that mess up values in value histry? FIXME */ |
| |
| extern void java_rerun_cleanup (void); |
| void |
| java_rerun_cleanup (void) |
| { |
| if (class_symtab != NULL) |
| { |
| free_symtab (class_symtab); /* ??? */ |
| class_symtab = NULL; |
| } |
| if (dynamics_objfile != NULL) |
| { |
| free_objfile (dynamics_objfile); |
| dynamics_objfile = NULL; |
| } |
| |
| java_object_type = NULL; |
| } |