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-rw-r--r--gdb/jv-lang.c1088
1 files changed, 1088 insertions, 0 deletions
diff --git a/gdb/jv-lang.c b/gdb/jv-lang.c
new file mode 100644
index 0000000..a98147a
--- /dev/null
+++ b/gdb/jv-lang.c
@@ -0,0 +1,1088 @@
+/* Java language support routines for GDB, the GNU debugger.
+ Copyright 1997, 1998, 1999 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;
+
+static int java_demangled_signature_length PARAMS ((char*));
+static void java_demangled_signature_copy PARAMS ((char*, char*));
+
+static void java_emit_char PARAMS ((int c, GDB_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 PARAMS ((struct type *, value_ptr));
+
+static struct objfile *
+get_dynamics_objfile ()
+{
+ if (dynamics_objfile == NULL)
+ {
+ dynamics_objfile = allocate_objfile (NULL, 0, 0, 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;
+
+struct symtab *
+get_java_class_symtab ()
+{
+ 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_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 = (struct block *)
+ mmalloc (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 (sym)
+ 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 = (struct block *)
+ mrealloc (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 PARAMS ((struct type *type, CORE_ADDR addr));
+
+static struct symbol *
+add_class_symbol (type, addr)
+ 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 (name)
+ 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 (obstack, name)
+ struct obstack *obstack;
+ value_ptr name;
+{
+ char *chrs;
+ value_ptr 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_section (data_addr, chrs, name_length, NULL);
+ return chrs;
+}
+
+value_ptr
+java_class_from_object (obj_val)
+ value_ptr obj_val;
+{
+ /* This is all rather inefficient, since the offsets of vtable and
+ class are fixed. FIXME */
+ value_ptr 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_pointer (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): */
+int
+java_class_is_primitive (clas)
+ value_ptr clas;
+{
+ value_ptr vtable = value_struct_elt (&clas, NULL, "vtable", NULL, "struct");
+ CORE_ADDR i = value_as_pointer (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 (clas)
+ value_ptr clas;
+{
+ struct type *type;
+ char *name;
+ value_ptr temp;
+ struct objfile *objfile;
+ value_ptr 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))
+ {
+ value_ptr 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 (type, clas)
+ struct type *type;
+ value_ptr clas;
+{
+ value_ptr 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;
+ value_ptr fields, field, method, methods;
+ 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 ()
+{
+ 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 ()
+{
+ 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 (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 (signature)
+ 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 (name, namelen)
+ 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 (signature)
+ 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 (result, signature)
+ 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 (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 (signature)
+ 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 (type, dims)
+ 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. */
+
+value_ptr
+java_value_string (ptr, len)
+ 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 (c, stream, quoter)
+ int c;
+ GDB_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 value_ptr
+evaluate_subexp_java (expect_type, exp, pos, noside)
+ 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;
+ value_ptr arg1, 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];
+
+ value_ptr clas = java_class_from_object(arg1);
+ value_ptr 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_pointer (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 (objfile, typeid)
+ 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,
+ 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 ()
+{
+
+ 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 */
+
+void java_rerun_cleanup ()
+{
+ 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;
+}