duke@435: /*
duke@435:  * Copyright 1997-2006 Sun Microsystems, Inc.  All Rights Reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
duke@435:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435:  * CA 95054 USA or visit www.sun.com if you need additional information or
duke@435:  * have any questions.
duke@435:  *
duke@435:  */
duke@435: 
duke@435: // This file holds platform-independant bodies of inline functions for frames.
duke@435: 
duke@435: // Note: The bcx usually contains the bcp; however during GC it contains the bci
duke@435: //       (changed by gc_prologue() and gc_epilogue()) to be methodOop position
duke@435: //       independent. These accessors make sure the correct value is returned
duke@435: //       by testing the range of the bcx value. bcp's are guaranteed to be above
duke@435: //       max_method_code_size, since methods are always allocated in OldSpace and
duke@435: //       Eden is allocated before OldSpace.
duke@435: //
duke@435: //       The bcp is accessed sometimes during GC for ArgumentDescriptors; than
duke@435: //       the correct translation has to be performed (was bug).
duke@435: 
duke@435: inline bool frame::is_bci(intptr_t bcx) {
duke@435: #ifdef _LP64
duke@435:   return ((uintptr_t) bcx) <= ((uintptr_t) max_method_code_size) ;
duke@435: #else
duke@435:   return 0 <= bcx && bcx <= max_method_code_size;
duke@435: #endif
duke@435: }
duke@435: 
duke@435: inline bool frame::is_entry_frame() const {
duke@435:   return StubRoutines::returns_to_call_stub(pc());
duke@435: }
duke@435: 
duke@435: inline bool frame::is_first_frame() const {
duke@435:   return is_entry_frame() && entry_frame_is_first();
duke@435: }
duke@435: 
duke@435: // here are the platform-dependent bodies:
duke@435: 
duke@435: # include "incls/_frame_pd.inline.hpp.incl"