1/* 2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. 3 * Copyright 2008, 2009 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_SHARKFRAME_ZERO_HPP 27#define CPU_ZERO_VM_SHARKFRAME_ZERO_HPP 28 29#include "oops/method.hpp" 30#include "stack_zero.hpp" 31 32// | ... | 33// +--------------------+ ------------------ 34// | stack slot n-1 | low addresses 35// | ... | 36// | stack slot 0 | 37// | monitor m-1 | 38// | ... | 39// | monitor 0 | 40// | oop_tmp | 41// | method | 42// | unextended_sp | 43// | pc | 44// | frame_type | 45// | next_frame | high addresses 46// +--------------------+ ------------------ 47// | ... | 48 49class SharkFrame : public ZeroFrame { 50 friend class SharkStack; 51 52 private: 53 SharkFrame() : ZeroFrame() { 54 ShouldNotCallThis(); 55 } 56 57 protected: 58 enum Layout { 59 pc_off = jf_header_words, 60 unextended_sp_off, 61 method_off, 62 oop_tmp_off, 63 header_words 64 }; 65 66 public: 67 address pc() const { 68 return (address) value_of_word(pc_off); 69 } 70 71 void set_pc(address pc) const { 72 *((address*) addr_of_word(pc_off)) = pc; 73 } 74 75 intptr_t* unextended_sp() const { 76 return (intptr_t *) value_of_word(unextended_sp_off); 77 } 78 79 Method* method() const { 80 return (Method*) value_of_word(method_off); 81 } 82 83 public: 84 void identify_word(int frame_index, 85 int offset, 86 char* fieldbuf, 87 char* valuebuf, 88 int buflen) const; 89}; 90 91#endif // CPU_ZERO_VM_SHARKFRAME_ZERO_HPP 92