interpreterRT_zero.hpp revision 1879:f95d63e2154a
1/* 2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. 3 * Copyright 2007, 2008 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_INTERPRETERRT_ZERO_HPP 27#define CPU_ZERO_VM_INTERPRETERRT_ZERO_HPP 28 29#include "memory/allocation.hpp" 30 31class SignatureHandler { 32 public: 33 static SignatureHandler *from_handlerAddr(address handlerAddr) { 34 return (SignatureHandler *) handlerAddr; 35 } 36 37 public: 38 ffi_cif* cif() const { 39 return (ffi_cif *) this; 40 } 41 42 int argument_count() const { 43 return cif()->nargs; 44 } 45 46 ffi_type** argument_types() const { 47 return (ffi_type**) (cif() + 1); 48 } 49 50 ffi_type* argument_type(int i) const { 51 return argument_types()[i]; 52 } 53 54 ffi_type* result_type() const { 55 return *(argument_types() + argument_count()); 56 } 57 58 protected: 59 friend class InterpreterRuntime; 60 friend class SignatureHandlerLibrary; 61 62 void finalize(); 63}; 64 65class SignatureHandlerGeneratorBase : public NativeSignatureIterator { 66 private: 67 ffi_cif* _cif; 68 69 protected: 70 SignatureHandlerGeneratorBase(methodHandle method, ffi_cif *cif) 71 : NativeSignatureIterator(method), _cif(cif) { 72 _cif->nargs = 0; 73 } 74 75 ffi_cif *cif() const { 76 return _cif; 77 } 78 79 public: 80 void generate(uint64_t fingerprint); 81 82 private: 83 void pass_int(); 84 void pass_long(); 85 void pass_float(); 86 void pass_double(); 87 void pass_object(); 88 89 private: 90 void push(BasicType type); 91 virtual void push(intptr_t value) = 0; 92}; 93 94class SignatureHandlerGenerator : public SignatureHandlerGeneratorBase { 95 private: 96 CodeBuffer* _cb; 97 98 public: 99 SignatureHandlerGenerator(methodHandle method, CodeBuffer* buffer) 100 : SignatureHandlerGeneratorBase(method, (ffi_cif *) buffer->insts_end()), 101 _cb(buffer) { 102 _cb->set_insts_end((address) (cif() + 1)); 103 } 104 105 private: 106 void push(intptr_t value) { 107 intptr_t *dst = (intptr_t *) _cb->insts_end(); 108 _cb->set_insts_end((address) (dst + 1)); 109 *dst = value; 110 } 111}; 112 113class SlowSignatureHandlerGenerator : public SignatureHandlerGeneratorBase { 114 private: 115 intptr_t *_dst; 116 117 public: 118 SlowSignatureHandlerGenerator(methodHandle method, intptr_t* buf) 119 : SignatureHandlerGeneratorBase(method, (ffi_cif *) buf) { 120 _dst = (intptr_t *) (cif() + 1); 121 } 122 123 private: 124 void push(intptr_t value) { 125 *(_dst++) = value; 126 } 127 128 public: 129 SignatureHandler *handler() const { 130 return (SignatureHandler *) cif(); 131 } 132}; 133 134#endif // CPU_ZERO_VM_INTERPRETERRT_ZERO_HPP 135