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annotate src/share/vm/interpreter/abstractInterpreter.hpp @ 22851:ddce0b7cee93

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8072383: resolve conflicts between open and closed ports Summary: refactor close to remove references to closed ports Reviewed-by: kvn, simonis, sgehwolf, dholmes
author dlong
date Tue, 24 Feb 2015 15:04:52 -0500
parents 0bf37f737702
children dd9cc155639c
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1 /*
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2 * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #ifndef SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP
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26 #define SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP
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27
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28 #include "code/stubs.hpp"
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29 #include "interpreter/bytecodes.hpp"
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30 #include "runtime/thread.inline.hpp"
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31 #include "runtime/vmThread.hpp"
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32 #include "utilities/top.hpp"
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33 #if defined INTERP_MASM_MD_HPP
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34 # include INTERP_MASM_MD_HPP
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35 #elif defined TARGET_ARCH_x86
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36 # include "interp_masm_x86.hpp"
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37 #elif defined TARGET_ARCH_MODEL_sparc
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38 # include "interp_masm_sparc.hpp"
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39 #elif defined TARGET_ARCH_MODEL_zero
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40 # include "interp_masm_zero.hpp"
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41 #elif defined TARGET_ARCH_MODEL_ppc_64
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42 # include "interp_masm_ppc_64.hpp"
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43 #endif
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44
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45 // This file contains the platform-independent parts
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46 // of the abstract interpreter and the abstract interpreter generator.
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47
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48 // Organization of the interpreter(s). There exists two different interpreters in hotpot
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49 // an assembly language version (aka template interpreter) and a high level language version
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50 // (aka c++ interpreter). Th division of labor is as follows:
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51
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52 // Template Interpreter C++ Interpreter Functionality
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53 //
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54 // templateTable* bytecodeInterpreter* actual interpretation of bytecodes
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55 //
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56 // templateInterpreter* cppInterpreter* generation of assembly code that creates
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57 // and manages interpreter runtime frames.
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58 // Also code for populating interpreter
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59 // frames created during deoptimization.
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60 //
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61 // For both template and c++ interpreter. There are common files for aspects of the interpreter
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62 // that are generic to both interpreters. This is the layout:
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63 //
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64 // abstractInterpreter.hpp: generic description of the interpreter.
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65 // interpreter*: generic frame creation and handling.
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66 //
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67
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68 //------------------------------------------------------------------------------------------------------------------------
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69 // The C++ interface to the bytecode interpreter(s).
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70
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71 class AbstractInterpreter: AllStatic {
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72 friend class VMStructs;
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73 friend class Interpreter;
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74 friend class CppInterpreterGenerator;
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75 public:
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76 enum MethodKind {
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77 zerolocals, // method needs locals initialization
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78 zerolocals_synchronized, // method needs locals initialization & is synchronized
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79 native, // native method
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80 native_synchronized, // native method & is synchronized
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81 empty, // empty method (code: _return)
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82 accessor, // accessor method (code: _aload_0, _getfield, _(a|i)return)
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83 abstract, // abstract method (throws an AbstractMethodException)
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84 method_handle_invoke_FIRST, // java.lang.invoke.MethodHandles::invokeExact, etc.
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85 method_handle_invoke_LAST = (method_handle_invoke_FIRST
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86 + (vmIntrinsics::LAST_MH_SIG_POLY
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87 - vmIntrinsics::FIRST_MH_SIG_POLY)),
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88 java_lang_math_sin, // implementation of java.lang.Math.sin (x)
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89 java_lang_math_cos, // implementation of java.lang.Math.cos (x)
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90 java_lang_math_tan, // implementation of java.lang.Math.tan (x)
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91 java_lang_math_abs, // implementation of java.lang.Math.abs (x)
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92 java_lang_math_sqrt, // implementation of java.lang.Math.sqrt (x)
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93 java_lang_math_log, // implementation of java.lang.Math.log (x)
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94 java_lang_math_log10, // implementation of java.lang.Math.log10 (x)
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95 java_lang_math_pow, // implementation of java.lang.Math.pow (x,y)
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96 java_lang_math_exp, // implementation of java.lang.Math.exp (x)
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97 java_lang_ref_reference_get, // implementation of java.lang.ref.Reference.get()
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98 java_util_zip_CRC32_update, // implementation of java.util.zip.CRC32.update()
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99 java_util_zip_CRC32_updateBytes, // implementation of java.util.zip.CRC32.updateBytes()
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100 java_util_zip_CRC32_updateByteBuffer, // implementation of java.util.zip.CRC32.updateByteBuffer()
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101 number_of_method_entries,
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102 invalid = -1
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103 };
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104
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105 // Conversion from the part of the above enum to vmIntrinsics::_invokeExact, etc.
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106 static vmIntrinsics::ID method_handle_intrinsic(MethodKind kind) {
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107 if (kind >= method_handle_invoke_FIRST && kind <= method_handle_invoke_LAST)
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108 return (vmIntrinsics::ID)( vmIntrinsics::FIRST_MH_SIG_POLY + (kind - method_handle_invoke_FIRST) );
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109 else
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110 return vmIntrinsics::_none;
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111 }
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112
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113 enum SomeConstants {
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114 number_of_result_handlers = 10 // number of result handlers for native calls
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115 };
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116
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117 protected:
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118 static StubQueue* _code; // the interpreter code (codelets)
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119
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120 static bool _notice_safepoints; // true if safepoints are activated
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121
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122 static address _native_entry_begin; // Region for native entry code
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123 static address _native_entry_end;
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124
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125 // method entry points
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126 static address _entry_table[number_of_method_entries]; // entry points for a given method
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127 static address _native_abi_to_tosca[number_of_result_handlers]; // for native method result handlers
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128 static address _slow_signature_handler; // the native method generic (slow) signature handler
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129
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130 static address _rethrow_exception_entry; // rethrows an activation in previous frame
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131
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132 friend class AbstractInterpreterGenerator;
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133 friend class InterpreterGenerator;
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134 friend class InterpreterMacroAssembler;
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135
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136 public:
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137 // Initialization/debugging
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138 static void initialize();
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139 static StubQueue* code() { return _code; }
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140
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141
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142 // Method activation
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143 static MethodKind method_kind(methodHandle m);
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144 static address entry_for_kind(MethodKind k) { assert(0 <= k && k < number_of_method_entries, "illegal kind"); return _entry_table[k]; }
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145 static address entry_for_method(methodHandle m) { return entry_for_kind(method_kind(m)); }
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146
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147 // used for bootstrapping method handles:
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148 static void set_entry_for_kind(MethodKind k, address e);
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149
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150 static void print_method_kind(MethodKind kind) PRODUCT_RETURN;
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151
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152 static bool can_be_compiled(methodHandle m);
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153
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154 // Runtime support
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155
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156 // length = invoke bytecode length (to advance to next bytecode)
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157 static address deopt_entry(TosState state, int length) { ShouldNotReachHere(); return NULL; }
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158 static address return_entry(TosState state, int length, Bytecodes::Code code) { ShouldNotReachHere(); return NULL; }
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159
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160 static address rethrow_exception_entry() { return _rethrow_exception_entry; }
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161
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162 // Activation size in words for a method that is just being called.
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163 // Parameters haven't been pushed so count them too.
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164 static int size_top_interpreter_activation(Method* method);
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165
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166 // Deoptimization support
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167 // Compute the entry address for continuation after
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168 static address deopt_continue_after_entry(Method* method,
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169 address bcp,
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170 int callee_parameters,
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171 bool is_top_frame);
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172 // Compute the entry address for reexecution
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173 static address deopt_reexecute_entry(Method* method, address bcp);
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174 // Deoptimization should reexecute this bytecode
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175 static bool bytecode_should_reexecute(Bytecodes::Code code);
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176
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177 // deoptimization support
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178 static int size_activation(int max_stack,
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179 int temps,
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180 int extra_args,
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181 int monitors,
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182 int callee_params,
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183 int callee_locals,
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184 bool is_top_frame);
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185
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186 static void layout_activation(Method* method,
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187 int temps,
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188 int popframe_args,
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189 int monitors,
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190 int caller_actual_parameters,
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191 int callee_params,
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192 int callee_locals,
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193 frame* caller,
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194 frame* interpreter_frame,
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195 bool is_top_frame,
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196 bool is_bottom_frame);
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197
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198 // Runtime support
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199 static bool is_not_reached( methodHandle method, int bci);
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200 // Safepoint support
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201 static void notice_safepoints() { ShouldNotReachHere(); } // stops the thread when reaching a safepoint
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202 static void ignore_safepoints() { ShouldNotReachHere(); } // ignores safepoints
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203
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204 // Support for native calls
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205 static address slow_signature_handler() { return _slow_signature_handler; }
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206 static address result_handler(BasicType type) { return _native_abi_to_tosca[BasicType_as_index(type)]; }
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207 static int BasicType_as_index(BasicType type); // computes index into result_handler_by_index table
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208 static bool in_native_entry(address pc) { return _native_entry_begin <= pc && pc < _native_entry_end; }
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209 // Debugging/printing
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210 static void print(); // prints the interpreter code
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211
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212 public:
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213 // Interpreter helpers
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214 const static int stackElementWords = 1;
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215 const static int stackElementSize = stackElementWords * wordSize;
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216 const static int logStackElementSize = LogBytesPerWord;
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217
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218 // Local values relative to locals[n]
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219 static int local_offset_in_bytes(int n) {
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220 return ((frame::interpreter_frame_expression_stack_direction() * n) * stackElementSize);
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221 }
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222
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223 // access to stacked values according to type:
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224 static oop* oop_addr_in_slot(intptr_t* slot_addr) {
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225 return (oop*) slot_addr;
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226 }
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227 static jint* int_addr_in_slot(intptr_t* slot_addr) {
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228 if ((int) sizeof(jint) < wordSize && !Bytes::is_Java_byte_ordering_different())
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229 // big-endian LP64
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230 return (jint*)(slot_addr + 1) - 1;
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231 else
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232 return (jint*) slot_addr;
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233 }
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234 static jlong long_in_slot(intptr_t* slot_addr) {
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235 if (sizeof(intptr_t) >= sizeof(jlong)) {
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236 return *(jlong*) slot_addr;
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237 } else {
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238 return Bytes::get_native_u8((address)slot_addr);
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239 }
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240 }
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241 static void set_long_in_slot(intptr_t* slot_addr, jlong value) {
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242 if (sizeof(intptr_t) >= sizeof(jlong)) {
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243 *(jlong*) slot_addr = value;
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244 } else {
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245 Bytes::put_native_u8((address)slot_addr, value);
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246 }
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247 }
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248 static void get_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) {
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249 switch (type) {
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250 case T_BOOLEAN: value->z = *int_addr_in_slot(slot_addr); break;
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251 case T_CHAR: value->c = *int_addr_in_slot(slot_addr); break;
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252 case T_BYTE: value->b = *int_addr_in_slot(slot_addr); break;
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253 case T_SHORT: value->s = *int_addr_in_slot(slot_addr); break;
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254 case T_INT: value->i = *int_addr_in_slot(slot_addr); break;
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255 case T_LONG: value->j = long_in_slot(slot_addr); break;
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256 case T_FLOAT: value->f = *(jfloat*)int_addr_in_slot(slot_addr); break;
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257 case T_DOUBLE: value->d = jdouble_cast(long_in_slot(slot_addr)); break;
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258 case T_OBJECT: value->l = (jobject)*oop_addr_in_slot(slot_addr); break;
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259 default: ShouldNotReachHere();
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260 }
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261 }
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262 static void set_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) {
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263 switch (type) {
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264 case T_BOOLEAN: *int_addr_in_slot(slot_addr) = (value->z != 0); break;
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265 case T_CHAR: *int_addr_in_slot(slot_addr) = value->c; break;
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266 case T_BYTE: *int_addr_in_slot(slot_addr) = value->b; break;
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267 case T_SHORT: *int_addr_in_slot(slot_addr) = value->s; break;
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268 case T_INT: *int_addr_in_slot(slot_addr) = value->i; break;
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269 case T_LONG: set_long_in_slot(slot_addr, value->j); break;
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270 case T_FLOAT: *(jfloat*)int_addr_in_slot(slot_addr) = value->f; break;
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271 case T_DOUBLE: set_long_in_slot(slot_addr, jlong_cast(value->d)); break;
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272 case T_OBJECT: *oop_addr_in_slot(slot_addr) = (oop) value->l; break;
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273 default: ShouldNotReachHere();
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274 }
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275 }
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276 };
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277
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278 //------------------------------------------------------------------------------------------------------------------------
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279 // The interpreter generator.
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280
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281 class Template;
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282 class AbstractInterpreterGenerator: public StackObj {
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283 protected:
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284 InterpreterMacroAssembler* _masm;
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285
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286 // shared code sequences
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287 // Converter for native abi result to tosca result
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288 address generate_result_handler_for(BasicType type);
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289 address generate_slow_signature_handler();
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290
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291 // entry point generator
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292 address generate_method_entry(AbstractInterpreter::MethodKind kind);
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293
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294 void bang_stack_shadow_pages(bool native_call);
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295
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296 void generate_all();
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297 void initialize_method_handle_entries();
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298
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299 public:
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300 AbstractInterpreterGenerator(StubQueue* _code);
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301 };
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302
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303 #endif // SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP