--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/oops/constMethodOop.cpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,130 @@
+/*
+ * Copyright 2003-2006 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+# include "incls/_precompiled.incl"
+# include "incls/_constMethodOop.cpp.incl"
+
+// Static initialization
+const u2 constMethodOopDesc::MAX_IDNUM   = 0xFFFE;
+const u2 constMethodOopDesc::UNSET_IDNUM = 0xFFFF;
+
+// How big must this constMethodObject be?
+
+int constMethodOopDesc::object_size(int code_size,
+                                    int compressed_line_number_size,
+                                    int local_variable_table_length,
+                                    int checked_exceptions_length) {
+  int extra_bytes = code_size;
+  if (compressed_line_number_size > 0) {
+    extra_bytes += compressed_line_number_size;
+  }
+  if (checked_exceptions_length > 0) {
+    extra_bytes += sizeof(u2);
+    extra_bytes += checked_exceptions_length * sizeof(CheckedExceptionElement);
+  }
+  if (local_variable_table_length > 0) {
+    extra_bytes += sizeof(u2);
+    extra_bytes +=
+              local_variable_table_length * sizeof(LocalVariableTableElement);
+  }
+  int extra_words = align_size_up(extra_bytes, BytesPerWord) / BytesPerWord;
+  return align_object_size(header_size() + extra_words);
+}
+
+
+// linenumber table - note that length is unknown until decompression,
+// see class CompressedLineNumberReadStream.
+
+u_char* constMethodOopDesc::compressed_linenumber_table() const {
+  // Located immediately following the bytecodes.
+  assert(has_linenumber_table(), "called only if table is present");
+  return code_end();
+}
+
+u2* constMethodOopDesc::checked_exceptions_length_addr() const {
+  // Located at the end of the constMethod.
+  assert(has_checked_exceptions(), "called only if table is present");
+  return last_u2_element();
+}
+
+u2* constMethodOopDesc::localvariable_table_length_addr() const {
+  assert(has_localvariable_table(), "called only if table is present");
+  if (has_checked_exceptions()) {
+    // If checked_exception present, locate immediately before them.
+    return (u2*) checked_exceptions_start() - 1;
+  } else {
+    // Else, the linenumber table is at the end of the constMethod.
+    return last_u2_element();
+  }
+}
+
+
+// Update the flags to indicate the presence of these optional fields.
+void constMethodOopDesc::set_inlined_tables_length(
+                                              int checked_exceptions_len,
+                                              int compressed_line_number_size,
+                                              int localvariable_table_len) {
+  // Must be done in the order below, otherwise length_addr accessors
+  // will not work. Only set bit in header if length is positive.
+  assert(_flags == 0, "Error");
+  if (compressed_line_number_size > 0) {
+    _flags |= _has_linenumber_table;
+  }
+  if (checked_exceptions_len > 0) {
+    _flags |= _has_checked_exceptions;
+    *(checked_exceptions_length_addr()) = checked_exceptions_len;
+  }
+  if (localvariable_table_len > 0) {
+    _flags |= _has_localvariable_table;
+    *(localvariable_table_length_addr()) = localvariable_table_len;
+  }
+}
+
+
+int constMethodOopDesc::checked_exceptions_length() const {
+  return has_checked_exceptions() ? *(checked_exceptions_length_addr()) : 0;
+}
+
+
+CheckedExceptionElement* constMethodOopDesc::checked_exceptions_start() const {
+  u2* addr = checked_exceptions_length_addr();
+  u2 length = *addr;
+  assert(length > 0, "should only be called if table is present");
+  addr -= length * sizeof(CheckedExceptionElement) / sizeof(u2);
+  return (CheckedExceptionElement*) addr;
+}
+
+
+int constMethodOopDesc::localvariable_table_length() const {
+  return has_localvariable_table() ? *(localvariable_table_length_addr()) : 0;
+}
+
+
+LocalVariableTableElement* constMethodOopDesc::localvariable_table_start() const {
+  u2* addr = localvariable_table_length_addr();
+  u2 length = *addr;
+  assert(length > 0, "should only be called if table is present");
+  addr -= length * sizeof(LocalVariableTableElement) / sizeof(u2);
+  return (LocalVariableTableElement*) addr;
+}