1 /* 2 * Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 // This file holds platform-independent bodies of inline functions for frames. 26 27 // Note: The bcx usually contains the bcp; however during GC it contains the bci 28 // (changed by gc_prologue() and gc_epilogue()) to be methodOop position 29 // independent. These accessors make sure the correct value is returned 30 // by testing the range of the bcx value. bcp's are guaranteed to be above 31 // max_method_code_size, since methods are always allocated in OldSpace and 32 // Eden is allocated before OldSpace. 33 // 34 // The bcp is accessed sometimes during GC for ArgumentDescriptors; than 35 // the correct translation has to be performed (was bug). 36 37 inline bool frame::is_bci(intptr_t bcx) { 38 #ifdef _LP64 39 return ((uintptr_t) bcx) <= ((uintptr_t) max_method_code_size) ; 40 #else 41 return 0 <= bcx && bcx <= max_method_code_size; 42 #endif 43 } 44 45 inline bool frame::is_entry_frame() const { 46 return StubRoutines::returns_to_call_stub(pc()); 47 } 48 49 inline bool frame::is_first_frame() const { 50 return is_entry_frame() && entry_frame_is_first(); 51 } 52 53 // here are the platform-dependent bodies: 54 55 # include "incls/_frame_pd.inline.hpp.incl"