1 /* 2 * Copyright (c) 2003, 2010, 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/methodOop.hpp" 30 31 // | ... | 32 // +--------------------+ ------------------ 33 // | stack slot n-1 | low addresses 34 // | ... | 35 // | stack slot 0 | 36 // | monitor m-1 | 37 // | ... | 38 // | monitor 0 | 39 // | oop_tmp | 40 // | method | 41 // | unextended_sp | 42 // | pc | 43 // | frame_type | 44 // | next_frame | high addresses 45 // +--------------------+ ------------------ 46 // | ... | 47 48 class SharkFrame : public ZeroFrame { 49 friend class SharkStack; 50 51 private: 52 SharkFrame() : ZeroFrame() { 53 ShouldNotCallThis(); 54 } 55 56 protected: 57 enum Layout { 58 pc_off = jf_header_words, 59 unextended_sp_off, 60 method_off, 61 oop_tmp_off, 62 header_words 63 }; 64 65 public: 66 address pc() const { 67 return (address) value_of_word(pc_off); 68 } 69 70 intptr_t* unextended_sp() const { 71 return (intptr_t *) value_of_word(unextended_sp_off); 72 } 73 74 methodOop method() const { 75 return (methodOop) value_of_word(method_off); 76 } 77 78 public: 79 void identify_word(int frame_index, 80 int offset, 81 char* fieldbuf, 82 char* valuebuf, 83 int buflen) const; 84 }; 85 86 #endif // CPU_ZERO_VM_SHARKFRAME_ZERO_HPP