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hotspot/src/share/vm/runtime/frame.inline.hpp

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+/*
+ * Copyright 1997-2006 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.
+ *
+ */
+
+// This file holds platform-independant bodies of inline functions for frames.
+
+// Note: The bcx usually contains the bcp; however during GC it contains the bci
+//       (changed by gc_prologue() and gc_epilogue()) to be methodOop position
+//       independent. These accessors make sure the correct value is returned
+//       by testing the range of the bcx value. bcp's are guaranteed to be above
+//       max_method_code_size, since methods are always allocated in OldSpace and
+//       Eden is allocated before OldSpace.
+//
+//       The bcp is accessed sometimes during GC for ArgumentDescriptors; than
+//       the correct translation has to be performed (was bug).
+
+inline bool frame::is_bci(intptr_t bcx) {
+#ifdef _LP64
+  return ((uintptr_t) bcx) <= ((uintptr_t) max_method_code_size) ;
+#else
+  return 0 <= bcx && bcx <= max_method_code_size;
+#endif
+}
+
+inline bool frame::is_entry_frame() const {
+  return StubRoutines::returns_to_call_stub(pc());
+}
+
+inline bool frame::is_first_frame() const {
+  return is_entry_frame() && entry_frame_is_first();
+}
+
+// here are the platform-dependent bodies:
+
+# include "incls/_frame_pd.inline.hpp.incl"