annotate src/share/vm/interpreter/bytecodeInterpreter.hpp @ 1986:9bc798875b2a

6704010: Internal Error (src/share/vm/interpreter/interpreterRuntime.cpp:1106) Summary: Fixed a race condition in the assertion caused by an unguarded, concurrent access to a GrowableArray object. Reviewed-by: coleenp, dholmes, dsamersoff Contributed-by: volker.simonis@gmail.com
author coleenp
date Sat, 04 Dec 2010 00:09:05 -0500
parents f95d63e2154a
children b92c45f2bc75
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1 /*
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2 * Copyright (c) 2002, 2010, 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_BYTECODEINTERPRETER_HPP
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26 #define SHARE_VM_INTERPRETER_BYTECODEINTERPRETER_HPP
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27
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28 #include "memory/allocation.hpp"
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29 #include "oops/methodDataOop.hpp"
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30 #include "oops/methodOop.hpp"
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31 #include "runtime/basicLock.hpp"
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32 #include "runtime/frame.hpp"
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33 #include "runtime/globals.hpp"
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34 #include "utilities/globalDefinitions.hpp"
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35 #ifdef TARGET_ARCH_x86
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36 # include "bytes_x86.hpp"
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37 #endif
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38 #ifdef TARGET_ARCH_sparc
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39 # include "bytes_sparc.hpp"
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40 #endif
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41 #ifdef TARGET_ARCH_zero
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42 # include "bytes_zero.hpp"
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43 #endif
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44
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45 #ifdef CC_INTERP
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46
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47 // CVM definitions find hotspot equivalents...
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48
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49 union VMJavaVal64 {
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50 jlong l;
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51 jdouble d;
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52 uint32_t v[2];
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53 };
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54
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55
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56 typedef class BytecodeInterpreter* interpreterState;
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57
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58 struct call_message {
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59 class methodOopDesc* _callee; /* method to call during call_method request */
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60 address _callee_entry_point; /* address to jump to for call_method request */
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61 int _bcp_advance; /* size of the invoke bytecode operation */
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62 };
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63
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64 struct osr_message {
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65 address _osr_buf; /* the osr buffer */
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66 address _osr_entry; /* the entry to the osr method */
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67 };
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68
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69 struct osr_result {
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70 nmethod* nm; /* osr nmethod */
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71 address return_addr; /* osr blob return address */
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72 };
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73
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74 // Result returned to frame manager
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75 union frame_manager_message {
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76 call_message _to_call; /* describes callee */
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77 Bytecodes::Code _return_kind; /* i_return, a_return, ... */
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78 osr_message _osr; /* describes the osr */
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79 osr_result _osr_result; /* result of OSR request */
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80 };
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81
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82 class BytecodeInterpreter : StackObj {
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83 friend class SharedRuntime;
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84 friend class AbstractInterpreterGenerator;
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85 friend class CppInterpreterGenerator;
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86 friend class InterpreterGenerator;
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87 friend class InterpreterMacroAssembler;
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88 friend class frame;
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89 friend class VMStructs;
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90
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91 public:
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92 enum messages {
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93 no_request = 0, // unused
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94 initialize, // Perform one time interpreter initializations (assumes all switches set)
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95 // status message to C++ interpreter
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96 method_entry, // initial method entry to interpreter
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97 method_resume, // frame manager response to return_from_method request (assuming a frame to resume)
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98 deopt_resume, // returning from a native call into a deopted frame
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99 deopt_resume2, // deopt resume as a result of a PopFrame
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100 got_monitors, // frame manager response to more_monitors request
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101 rethrow_exception, // unwinding and throwing exception
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102 // requests to frame manager from C++ interpreter
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103 call_method, // request for new frame from interpreter, manager responds with method_entry
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104 return_from_method, // request from interpreter to unwind, manager responds with method_continue
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105 more_monitors, // need a new monitor
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106 throwing_exception, // unwind stack and rethrow
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107 popping_frame, // unwind call and retry call
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108 do_osr // request this invocation be OSR's
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109 };
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110
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111 private:
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112 JavaThread* _thread; // the vm's java thread pointer
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113 address _bcp; // instruction pointer
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114 intptr_t* _locals; // local variable pointer
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115 constantPoolCacheOop _constants; // constant pool cache
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116 methodOop _method; // method being executed
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117 DataLayout* _mdx; // compiler profiling data for current bytecode
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118 intptr_t* _stack; // expression stack
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119 messages _msg; // frame manager <-> interpreter message
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120 frame_manager_message _result; // result to frame manager
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121 interpreterState _prev_link; // previous interpreter state
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122 oop _oop_temp; // mirror for interpreted native, null otherwise
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123 intptr_t* _stack_base; // base of expression stack
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124 intptr_t* _stack_limit; // limit of expression stack
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125 BasicObjectLock* _monitor_base; // base of monitors on the native stack
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126
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127
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128 public:
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129 // Constructor is only used by the initialization step. All other instances are created
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130 // by the frame manager.
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131 BytecodeInterpreter(messages msg);
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132
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133 //
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134 // Deoptimization support
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135 //
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136 static void layout_interpreterState(interpreterState to_fill,
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137 frame* caller,
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138 frame* interpreter_frame,
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139 methodOop method,
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140 intptr_t* locals,
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141 intptr_t* stack,
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142 intptr_t* stack_base,
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143 intptr_t* monitor_base,
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144 intptr_t* frame_bottom,
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145 bool top_frame);
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146
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147 /*
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148 * Generic 32-bit wide "Java slot" definition. This type occurs
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149 * in operand stacks, Java locals, object fields, constant pools.
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150 */
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151 union VMJavaVal32 {
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152 jint i;
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153 jfloat f;
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154 class oopDesc* r;
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155 uint32_t raw;
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156 };
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157
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158 /*
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159 * Generic 64-bit Java value definition
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160 */
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161 union VMJavaVal64 {
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162 jlong l;
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163 jdouble d;
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164 uint32_t v[2];
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165 };
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166
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167 /*
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168 * Generic 32-bit wide "Java slot" definition. This type occurs
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169 * in Java locals, object fields, constant pools, and
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170 * operand stacks (as a CVMStackVal32).
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171 */
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172 typedef union VMSlotVal32 {
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173 VMJavaVal32 j; /* For "Java" values */
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174 address a; /* a return created by jsr or jsr_w */
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175 } VMSlotVal32;
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176
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177
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178 /*
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179 * Generic 32-bit wide stack slot definition.
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180 */
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181 union VMStackVal32 {
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182 VMJavaVal32 j; /* For "Java" values */
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183 VMSlotVal32 s; /* any value from a "slot" or locals[] */
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184 };
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185
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186 inline JavaThread* thread() { return _thread; }
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187
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188 inline address bcp() { return _bcp; }
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189 inline void set_bcp(address new_bcp) { _bcp = new_bcp; }
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190
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191 inline intptr_t* locals() { return _locals; }
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192
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193 inline constantPoolCacheOop constants() { return _constants; }
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194 inline methodOop method() { return _method; }
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195 inline DataLayout* mdx() { return _mdx; }
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196 inline void set_mdx(DataLayout *new_mdx) { _mdx = new_mdx; }
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197
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198 inline messages msg() { return _msg; }
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199 inline void set_msg(messages new_msg) { _msg = new_msg; }
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200
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201 inline methodOop callee() { return _result._to_call._callee; }
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202 inline void set_callee(methodOop new_callee) { _result._to_call._callee = new_callee; }
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203 inline void set_callee_entry_point(address entry) { _result._to_call._callee_entry_point = entry; }
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204 inline void set_osr_buf(address buf) { _result._osr._osr_buf = buf; }
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205 inline void set_osr_entry(address entry) { _result._osr._osr_entry = entry; }
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206 inline int bcp_advance() { return _result._to_call._bcp_advance; }
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207 inline void set_bcp_advance(int count) { _result._to_call._bcp_advance = count; }
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208
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209 inline void set_return_kind(Bytecodes::Code kind) { _result._return_kind = kind; }
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210
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211 inline interpreterState prev() { return _prev_link; }
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212
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213 inline intptr_t* stack() { return _stack; }
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214 inline void set_stack(intptr_t* new_stack) { _stack = new_stack; }
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215
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216
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217 inline intptr_t* stack_base() { return _stack_base; }
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218 inline intptr_t* stack_limit() { return _stack_limit; }
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219
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220 inline BasicObjectLock* monitor_base() { return _monitor_base; }
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221
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222 /*
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223 * 64-bit Arithmetic:
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224 *
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225 * The functions below follow the semantics of the
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226 * ladd, land, ldiv, lmul, lor, lxor, and lrem bytecodes,
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227 * respectively.
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228 */
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229
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230 static jlong VMlongAdd(jlong op1, jlong op2);
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231 static jlong VMlongAnd(jlong op1, jlong op2);
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232 static jlong VMlongDiv(jlong op1, jlong op2);
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233 static jlong VMlongMul(jlong op1, jlong op2);
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234 static jlong VMlongOr (jlong op1, jlong op2);
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235 static jlong VMlongSub(jlong op1, jlong op2);
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236 static jlong VMlongXor(jlong op1, jlong op2);
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237 static jlong VMlongRem(jlong op1, jlong op2);
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238
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239 /*
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240 * Shift:
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241 *
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242 * The functions below follow the semantics of the
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243 * lushr, lshl, and lshr bytecodes, respectively.
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244 */
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245
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246 static jlong VMlongUshr(jlong op1, jint op2);
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247 static jlong VMlongShl (jlong op1, jint op2);
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248 static jlong VMlongShr (jlong op1, jint op2);
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249
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250 /*
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251 * Unary:
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252 *
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253 * Return the negation of "op" (-op), according to
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254 * the semantics of the lneg bytecode.
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255 */
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256
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257 static jlong VMlongNeg(jlong op);
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258
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259 /*
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260 * Return the complement of "op" (~op)
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261 */
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262
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263 static jlong VMlongNot(jlong op);
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264
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265
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266 /*
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267 * Comparisons to 0:
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268 */
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269
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270 static int32_t VMlongLtz(jlong op); /* op <= 0 */
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271 static int32_t VMlongGez(jlong op); /* op >= 0 */
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272 static int32_t VMlongEqz(jlong op); /* op == 0 */
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273
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274 /*
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275 * Between operands:
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276 */
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277
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278 static int32_t VMlongEq(jlong op1, jlong op2); /* op1 == op2 */
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279 static int32_t VMlongNe(jlong op1, jlong op2); /* op1 != op2 */
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280 static int32_t VMlongGe(jlong op1, jlong op2); /* op1 >= op2 */
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281 static int32_t VMlongLe(jlong op1, jlong op2); /* op1 <= op2 */
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282 static int32_t VMlongLt(jlong op1, jlong op2); /* op1 < op2 */
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283 static int32_t VMlongGt(jlong op1, jlong op2); /* op1 > op2 */
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284
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285 /*
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286 * Comparisons (returning an jint value: 0, 1, or -1)
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287 *
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288 * Between operands:
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289 *
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290 * Compare "op1" and "op2" according to the semantics of the
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291 * "lcmp" bytecode.
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292 */
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293
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294 static int32_t VMlongCompare(jlong op1, jlong op2);
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295
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296 /*
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297 * Convert int to long, according to "i2l" bytecode semantics
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298 */
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299 static jlong VMint2Long(jint val);
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300
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301 /*
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302 * Convert long to int, according to "l2i" bytecode semantics
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303 */
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304 static jint VMlong2Int(jlong val);
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305
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306 /*
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307 * Convert long to float, according to "l2f" bytecode semantics
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308 */
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309 static jfloat VMlong2Float(jlong val);
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310
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311 /*
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312 * Convert long to double, according to "l2d" bytecode semantics
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313 */
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314 static jdouble VMlong2Double(jlong val);
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315
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316 /*
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317 * Java floating-point float value manipulation.
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318 *
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319 * The result argument is, once again, an lvalue.
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320 *
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321 * Arithmetic:
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322 *
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323 * The functions below follow the semantics of the
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324 * fadd, fsub, fmul, fdiv, and frem bytecodes,
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325 * respectively.
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326 */
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327
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328 static jfloat VMfloatAdd(jfloat op1, jfloat op2);
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329 static jfloat VMfloatSub(jfloat op1, jfloat op2);
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330 static jfloat VMfloatMul(jfloat op1, jfloat op2);
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331 static jfloat VMfloatDiv(jfloat op1, jfloat op2);
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332 static jfloat VMfloatRem(jfloat op1, jfloat op2);
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333
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334 /*
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335 * Unary:
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336 *
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337 * Return the negation of "op" (-op), according to
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338 * the semantics of the fneg bytecode.
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339 */
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340
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341 static jfloat VMfloatNeg(jfloat op);
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342
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343 /*
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344 * Comparisons (returning an int value: 0, 1, or -1)
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345 *
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346 * Between operands:
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347 *
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348 * Compare "op1" and "op2" according to the semantics of the
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349 * "fcmpl" (direction is -1) or "fcmpg" (direction is 1) bytecodes.
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350 */
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351
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352 static int32_t VMfloatCompare(jfloat op1, jfloat op2,
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353 int32_t direction);
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354 /*
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355 * Conversion:
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356 */
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357
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358 /*
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359 * Convert float to double, according to "f2d" bytecode semantics
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360 */
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361
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362 static jdouble VMfloat2Double(jfloat op);
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363
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364 /*
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365 ******************************************
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366 * Java double floating-point manipulation.
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367 ******************************************
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368 *
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369 * The result argument is, once again, an lvalue.
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370 *
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371 * Conversions:
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372 */
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373
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374 /*
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375 * Convert double to int, according to "d2i" bytecode semantics
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376 */
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377
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378 static jint VMdouble2Int(jdouble val);
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379
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380 /*
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381 * Convert double to float, according to "d2f" bytecode semantics
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382 */
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383
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384 static jfloat VMdouble2Float(jdouble val);
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385
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386 /*
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387 * Convert int to double, according to "i2d" bytecode semantics
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388 */
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389
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390 static jdouble VMint2Double(jint val);
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391
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392 /*
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393 * Arithmetic:
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394 *
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395 * The functions below follow the semantics of the
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396 * dadd, dsub, ddiv, dmul, and drem bytecodes, respectively.
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397 */
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398
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399 static jdouble VMdoubleAdd(jdouble op1, jdouble op2);
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400 static jdouble VMdoubleSub(jdouble op1, jdouble op2);
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401 static jdouble VMdoubleDiv(jdouble op1, jdouble op2);
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402 static jdouble VMdoubleMul(jdouble op1, jdouble op2);
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403 static jdouble VMdoubleRem(jdouble op1, jdouble op2);
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404
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405 /*
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406 * Unary:
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407 *
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408 * Return the negation of "op" (-op), according to
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409 * the semantics of the dneg bytecode.
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410 */
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411
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412 static jdouble VMdoubleNeg(jdouble op);
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413
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414 /*
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415 * Comparisons (returning an int32_t value: 0, 1, or -1)
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416 *
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417 * Between operands:
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418 *
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419 * Compare "op1" and "op2" according to the semantics of the
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420 * "dcmpl" (direction is -1) or "dcmpg" (direction is 1) bytecodes.
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421 */
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422
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423 static int32_t VMdoubleCompare(jdouble op1, jdouble op2, int32_t direction);
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424
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425 /*
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426 * Copy two typeless 32-bit words from one location to another.
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427 * This is semantically equivalent to:
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428 *
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429 * to[0] = from[0];
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430 * to[1] = from[1];
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431 *
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432 * but this interface is provided for those platforms that could
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433 * optimize this into a single 64-bit transfer.
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434 */
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435
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436 static void VMmemCopy64(uint32_t to[2], const uint32_t from[2]);
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437
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438
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439 // Arithmetic operations
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440
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441 /*
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442 * Java arithmetic methods.
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443 * The functions below follow the semantics of the
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444 * iadd, isub, imul, idiv, irem, iand, ior, ixor,
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445 * and ineg bytecodes, respectively.
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446 */
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447
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448 static jint VMintAdd(jint op1, jint op2);
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449 static jint VMintSub(jint op1, jint op2);
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450 static jint VMintMul(jint op1, jint op2);
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451 static jint VMintDiv(jint op1, jint op2);
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452 static jint VMintRem(jint op1, jint op2);
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453 static jint VMintAnd(jint op1, jint op2);
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454 static jint VMintOr (jint op1, jint op2);
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455 static jint VMintXor(jint op1, jint op2);
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456
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457 /*
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458 * Shift Operation:
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459 * The functions below follow the semantics of the
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460 * iushr, ishl, and ishr bytecodes, respectively.
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461 */
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462
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463 static juint VMintUshr(jint op, jint num);
0
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464 static jint VMintShl (jint op, jint num);
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465 static jint VMintShr (jint op, jint num);
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466
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467 /*
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468 * Unary Operation:
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469 *
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470 * Return the negation of "op" (-op), according to
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471 * the semantics of the ineg bytecode.
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472 */
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473
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474 static jint VMintNeg(jint op);
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475
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476 /*
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477 * Int Conversions:
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478 */
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479
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480 /*
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481 * Convert int to float, according to "i2f" bytecode semantics
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482 */
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483
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484 static jfloat VMint2Float(jint val);
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485
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486 /*
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487 * Convert int to byte, according to "i2b" bytecode semantics
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488 */
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489
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490 static jbyte VMint2Byte(jint val);
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491
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492 /*
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493 * Convert int to char, according to "i2c" bytecode semantics
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494 */
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495
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496 static jchar VMint2Char(jint val);
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497
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498 /*
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499 * Convert int to short, according to "i2s" bytecode semantics
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500 */
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501
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502 static jshort VMint2Short(jint val);
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503
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504 /*=========================================================================
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505 * Bytecode interpreter operations
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506 *=======================================================================*/
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507
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508 static void dup(intptr_t *tos);
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509 static void dup2(intptr_t *tos);
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510 static void dup_x1(intptr_t *tos); /* insert top word two down */
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511 static void dup_x2(intptr_t *tos); /* insert top word three down */
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512 static void dup2_x1(intptr_t *tos); /* insert top 2 slots three down */
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513 static void dup2_x2(intptr_t *tos); /* insert top 2 slots four down */
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514 static void swap(intptr_t *tos); /* swap top two elements */
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515
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516 // umm don't like this method modifies its object
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517
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518 // The Interpreter used when
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519 static void run(interpreterState istate);
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520 // The interpreter used if JVMTI needs interpreter events
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521 static void runWithChecks(interpreterState istate);
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522 static void End_Of_Interpreter(void);
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523
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524 // Inline static functions for Java Stack and Local manipulation
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525
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526 static address stack_slot(intptr_t *tos, int offset);
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527 static jint stack_int(intptr_t *tos, int offset);
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528 static jfloat stack_float(intptr_t *tos, int offset);
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529 static oop stack_object(intptr_t *tos, int offset);
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530 static jdouble stack_double(intptr_t *tos, int offset);
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531 static jlong stack_long(intptr_t *tos, int offset);
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532
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533 // only used for value types
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534 static void set_stack_slot(intptr_t *tos, address value, int offset);
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535 static void set_stack_int(intptr_t *tos, int value, int offset);
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536 static void set_stack_float(intptr_t *tos, jfloat value, int offset);
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537 static void set_stack_object(intptr_t *tos, oop value, int offset);
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538
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539 // needs to be platform dep for the 32 bit platforms.
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540 static void set_stack_double(intptr_t *tos, jdouble value, int offset);
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541 static void set_stack_long(intptr_t *tos, jlong value, int offset);
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542
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543 static void set_stack_double_from_addr(intptr_t *tos, address addr, int offset);
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544 static void set_stack_long_from_addr(intptr_t *tos, address addr, int offset);
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545
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546 // Locals
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547
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548 static address locals_slot(intptr_t* locals, int offset);
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549 static jint locals_int(intptr_t* locals, int offset);
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550 static jfloat locals_float(intptr_t* locals, int offset);
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551 static oop locals_object(intptr_t* locals, int offset);
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552 static jdouble locals_double(intptr_t* locals, int offset);
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553 static jlong locals_long(intptr_t* locals, int offset);
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554
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555 static address locals_long_at(intptr_t* locals, int offset);
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556 static address locals_double_at(intptr_t* locals, int offset);
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557
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558 static void set_locals_slot(intptr_t *locals, address value, int offset);
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559 static void set_locals_int(intptr_t *locals, jint value, int offset);
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560 static void set_locals_float(intptr_t *locals, jfloat value, int offset);
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561 static void set_locals_object(intptr_t *locals, oop value, int offset);
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562 static void set_locals_double(intptr_t *locals, jdouble value, int offset);
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563 static void set_locals_long(intptr_t *locals, jlong value, int offset);
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564 static void set_locals_double_from_addr(intptr_t *locals,
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565 address addr, int offset);
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566 static void set_locals_long_from_addr(intptr_t *locals,
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567 address addr, int offset);
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568
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569 static void astore(intptr_t* topOfStack, int stack_offset,
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570 intptr_t* locals, int locals_offset);
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571
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572 // Support for dup and swap
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573 static void copy_stack_slot(intptr_t *tos, int from_offset, int to_offset);
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574
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575 #ifndef PRODUCT
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576 static const char* C_msg(BytecodeInterpreter::messages msg);
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577 void print();
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578 #endif // PRODUCT
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579
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580 // Platform fields/methods
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581 #ifdef TARGET_ARCH_x86
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582 # include "bytecodeInterpreter_x86.hpp"
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583 #endif
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584 #ifdef TARGET_ARCH_sparc
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585 # include "bytecodeInterpreter_sparc.hpp"
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586 #endif
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587 #ifdef TARGET_ARCH_zero
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588 # include "bytecodeInterpreter_zero.hpp"
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589 #endif
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590
0
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591
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592 }; // BytecodeInterpreter
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593
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594 #endif // CC_INTERP
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595
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596 #endif // SHARE_VM_INTERPRETER_BYTECODEINTERPRETER_HPP