frame.inline.hpp revision 0:a61af66fc99e
1/* 2 * Copyright 1997-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 20 * CA 95054 USA or visit www.sun.com if you need additional information or 21 * have any questions. 22 * 23 */ 24 25// This file holds platform-independant 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 37inline 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 45inline bool frame::is_entry_frame() const { 46 return StubRoutines::returns_to_call_stub(pc()); 47} 48 49inline 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" 56