1/* 2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved. 3 * Copyright 2008, 2009, 2010 Red Hat, Inc. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26#ifndef CPU_ZERO_VM_ENTRY_ZERO_HPP 27#define CPU_ZERO_VM_ENTRY_ZERO_HPP 28 29#include "interpreter/cppInterpreter.hpp" 30 31class ZeroEntry { 32 public: 33 ZeroEntry() { 34 ShouldNotCallThis(); 35 } 36 37 private: 38 address _entry_point; 39 40 public: 41 address entry_point() const { 42 return _entry_point; 43 } 44 void set_entry_point(address entry_point) { 45 _entry_point = entry_point; 46 } 47 48 private: 49 typedef int (*NormalEntryFunc)(Method* method, 50 intptr_t base_pc, 51 TRAPS); 52 typedef int (*OSREntryFunc)(Method* method, 53 address osr_buf, 54 intptr_t base_pc, 55 TRAPS); 56 57 public: 58 void invoke(Method* method, TRAPS) const { 59 maybe_deoptimize( 60 ((NormalEntryFunc) entry_point())(method, (intptr_t) this, THREAD), 61 THREAD); 62 } 63 void invoke_osr(Method* method, address osr_buf, TRAPS) const { 64 maybe_deoptimize( 65 ((OSREntryFunc) entry_point())(method, osr_buf, (intptr_t) this, THREAD), 66 THREAD); 67 } 68 69 private: 70 static void maybe_deoptimize(int deoptimized_frames, TRAPS) { 71 if (deoptimized_frames) 72 CppInterpreter::main_loop(deoptimized_frames - 1, THREAD); 73 } 74 75 public: 76 static ByteSize entry_point_offset() { 77 return byte_offset_of(ZeroEntry, _entry_point); 78 } 79}; 80 81#endif // CPU_ZERO_VM_ENTRY_ZERO_HPP 82