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annotate graal/GraalCompiler/src/com/sun/c1x/target/amd64/AMD64GlobalStubEmitter.java @ 2731:a2f62de90c76

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Removed unused optimization settings. Removed unused imports.
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Thu, 19 May 2011 17:20:55 +0200
parents 0ea5f12e873a
children
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1 /*
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2 * Copyright (c) 2009, 2011, 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 package com.sun.c1x.target.amd64;
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24
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25 import static com.sun.cri.ci.CiCallingConvention.Type.*;
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26
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27 import java.util.*;
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28
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29 import com.oracle.max.asm.*;
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30 import com.oracle.max.asm.target.amd64.*;
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31 import com.oracle.max.asm.target.amd64.AMD64Assembler.*;
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32 import com.sun.c1x.*;
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33 import com.sun.c1x.asm.*;
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34 import com.sun.c1x.globalstub.*;
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35 import com.sun.cri.ci.*;
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36 import com.sun.cri.ci.CiRegister.*;
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37 import com.sun.cri.ri.*;
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38 import com.sun.cri.xir.*;
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39 import com.sun.cri.xir.CiXirAssembler.*;
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40
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41 public class AMD64GlobalStubEmitter implements GlobalStubEmitter {
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42
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43 public static final int ARGUMENT_SIZE = 8;
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44
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45 private static final long FloatSignFlip = 0x8000000080000000L;
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46 private static final long DoubleSignFlip = 0x8000000000000000L;
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47 private static final CiRegister convertArgument = AMD64.xmm0;
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48 private static final CiRegister convertResult = AMD64.rax;
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49 private static final CiRegister negateArgument = AMD64.xmm0;
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50 private static final CiRegister negateTemp = AMD64.xmm1;
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51
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52 private TargetMethodAssembler tasm;
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53 private AMD64MacroAssembler asm;
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54 private final CiTarget target;
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55 private int argsSize;
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56 private int[] argOffsets;
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57 private int resultOffset;
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58 private int saveSize;
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59 private int registerRestoreEpilogueOffset;
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60
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61 private RiRuntime runtime;
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62 private C1XCompiler compiler;
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63 private CiRegister[] registersSaved;
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64
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65 private boolean savedAllRegisters;
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66
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67 public AMD64GlobalStubEmitter(C1XCompiler compiler) {
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68 this.compiler = compiler;
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69 this.target = compiler.target;
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70 this.runtime = compiler.runtime;
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71 }
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72
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73 private void reset(CiKind resultKind, CiKind[] argTypes) {
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74 asm = new AMD64MacroAssembler(compiler.target, compiler.globalStubRegisterConfig);
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75 tasm = new TargetMethodAssembler(asm);
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76 saveSize = 0;
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77 argsSize = 0;
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78 argOffsets = new int[argTypes.length];
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79 resultOffset = 0;
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80 registerRestoreEpilogueOffset = -1;
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81 registersSaved = null;
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82
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83 for (int i = 0; i < argTypes.length; i++) {
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84 argOffsets[i] = argsSize;
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85 argsSize += ARGUMENT_SIZE;
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86 }
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87
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88 if (resultKind != CiKind.Void) {
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89 if (argsSize == 0) {
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90 argsSize = ARGUMENT_SIZE;
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91 }
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92 resultOffset = 0;
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93 }
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94 }
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95
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96 public GlobalStub emit(CiRuntimeCall runtimeCall, RiRuntime runtime) {
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97 reset(runtimeCall.resultKind, runtimeCall.arguments);
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98 emitStandardForward(null, runtimeCall);
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99 String name = "stub-" + runtimeCall;
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100 CiTargetMethod targetMethod = tasm.finishTargetMethod(name, runtime, registerRestoreEpilogueOffset, true);
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101 Object stubObject = runtime.registerGlobalStub(targetMethod, name);
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102 return new GlobalStub(null, runtimeCall.resultKind, stubObject, argsSize, argOffsets, resultOffset);
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103 }
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104
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105 public GlobalStub emit(GlobalStub.Id stub, RiRuntime runtime) {
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106 reset(stub.resultKind, stub.arguments);
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107
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108 switch (stub) {
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109 case f2i:
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110 emitF2I();
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111 break;
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112 case f2l:
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113 emitF2L();
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114 break;
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115 case d2i:
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116 emitD2I();
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117 break;
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118 case d2l:
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119 emitD2L();
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120 break;
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121 case fneg:
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122 emitFNEG();
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123 break;
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124 case dneg:
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125 emitDNEG();
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126 break;
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127 }
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128
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129 String name = "stub-" + stub;
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130 CiTargetMethod targetMethod = tasm.finishTargetMethod(name, runtime, registerRestoreEpilogueOffset, true);
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131 Object stubObject = runtime.registerGlobalStub(targetMethod, name);
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132 return new GlobalStub(stub, stub.resultKind, stubObject, argsSize, argOffsets, resultOffset);
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133 }
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134
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135 private CiValue allocateParameterOperand(XirParameter param, int parameterIndex) {
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136 return new CiAddress(param.kind, AMD64.RSP, argumentIndexToStackOffset(parameterIndex));
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137 }
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138
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139 private CiValue allocateResultOperand(XirOperand result) {
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140 return new CiAddress(result.kind, AMD64.RSP, argumentIndexToStackOffset(0));
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141 }
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142
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143 private CiValue allocateOperand(XirTemp temp, ArrayList<CiRegister> allocatableRegisters) {
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144 if (temp instanceof XirRegister) {
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145 XirRegister fixed = (XirRegister) temp;
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146 return fixed.register;
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147 }
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148
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149 return newRegister(temp.kind, allocatableRegisters);
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150 }
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151
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152 private CiValue newRegister(CiKind kind, ArrayList<CiRegister> allocatableRegisters) {
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153 assert kind != CiKind.Float && kind != CiKind.Double;
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154 assert allocatableRegisters.size() > 0;
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155 return allocatableRegisters.remove(allocatableRegisters.size() - 1).asValue(kind);
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156 }
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157
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158 public GlobalStub emit(XirTemplate template, RiRuntime runtime) {
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159 C1XCompilation compilation = new C1XCompilation(compiler, null, -1, null);
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160 try {
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161 return emit(template, compilation);
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162 } finally {
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163 compilation.close();
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164 }
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165 }
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166
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167 public GlobalStub emit(XirTemplate template, C1XCompilation compilation) {
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168 reset(template.resultOperand.kind, getArgumentKinds(template));
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169 compilation.initFrameMap(0);
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170 compilation.frameMap().setFrameSize(frameSize());
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171 AMD64LIRAssembler assembler = new AMD64LIRAssembler(compilation);
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172 asm = assembler.masm;
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Christian.Wimmer@Oracle.com
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173 tasm = assembler.tasm;
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174
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175 ArrayList<CiRegister> allocatableRegisters = new ArrayList<CiRegister>(Arrays.asList(compiler.globalStubRegisterConfig.getCategorizedAllocatableRegisters().get(RegisterFlag.CPU)));
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176 for (XirTemp t : template.temps) {
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177 if (t instanceof XirRegister) {
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178 final XirRegister fixed = (XirRegister) t;
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179 if (fixed.register.isRegister()) {
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180 allocatableRegisters.remove(fixed.register.asRegister());
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181 }
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182 }
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183 }
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184
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185 completeSavePrologue();
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186
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187 CiValue[] operands = new CiValue[template.variableCount];
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188
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189 XirOperand resultOperand = template.resultOperand;
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190
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191 if (template.allocateResultOperand) {
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192 CiValue outputOperand = CiValue.IllegalValue;
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193 // This snippet has a result that must be separately allocated
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194 // Otherwise it is assumed that the result is part of the inputs
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195 if (resultOperand.kind != CiKind.Void && resultOperand.kind != CiKind.Illegal) {
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196 outputOperand = allocateResultOperand(resultOperand);
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197 assert operands[resultOperand.index] == null;
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198 }
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199 operands[resultOperand.index] = outputOperand;
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200 }
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201
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202 for (XirParameter param : template.parameters) {
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203 assert !(param instanceof XirConstantOperand) : "constant parameters not supported for stubs";
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204 CiValue op = allocateParameterOperand(param, param.parameterIndex);
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205 assert operands[param.index] == null;
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206
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207 // Is the value destroyed?
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208 if (template.isParameterDestroyed(param.parameterIndex)) {
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209 CiValue newOp = newRegister(op.kind, allocatableRegisters);
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210 assembler.moveOp(op, newOp, op.kind, null, false);
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211 operands[param.index] = newOp;
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212 } else {
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213 operands[param.index] = op;
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214 }
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215 }
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216
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217 for (XirConstant c : template.constants) {
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218 assert operands[c.index] == null;
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219 operands[c.index] = c.value;
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220 }
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221
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222 for (XirTemp t : template.temps) {
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223 CiValue op = allocateOperand(t, allocatableRegisters);
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224 assert operands[t.index] == null;
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225 operands[t.index] = op;
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226 }
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227
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228 for (CiValue operand : operands) {
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229 assert operand != null;
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230 }
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231
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232 Label[] labels = new Label[template.labels.length];
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233 for (int i = 0; i < labels.length; i++) {
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234 labels[i] = new Label();
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235 }
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236
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237 assert template.marks.length == 0 : "marks not supported in global stubs";
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238 assembler.emitXirInstructions(null, template.fastPath, labels, operands, null);
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239 epilogue();
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Christian.Wimmer@Oracle.com
parents: 2509
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240 CiTargetMethod targetMethod = tasm.finishTargetMethod(template.name, runtime, registerRestoreEpilogueOffset, true);
2507
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241 Object stubObject = runtime.registerGlobalStub(targetMethod, template.name);
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242 return new GlobalStub(null, template.resultOperand.kind, stubObject, argsSize, argOffsets, resultOffset);
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243 }
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244
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245 private CiKind[] getArgumentKinds(XirTemplate template) {
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246 CiXirAssembler.XirParameter[] params = template.parameters;
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247 CiKind[] result = new CiKind[params.length];
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248 for (int i = 0; i < params.length; i++) {
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249 result[i] = params[i].kind;
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250 }
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251 return result;
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252 }
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253
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254 private void negatePrologue() {
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255 partialSavePrologue(negateArgument, negateTemp);
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256 loadArgument(0, negateArgument);
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257 }
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258
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259 private void negateEpilogue() {
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260 storeArgument(0, negateArgument);
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261 epilogue();
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262 }
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263
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264 private void emitDNEG() {
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265 negatePrologue();
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266 asm.movsd(negateTemp, tasm.recordDataReferenceInCode(CiConstant.forLong(DoubleSignFlip)));
2507
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267 asm.xorpd(negateArgument, negateTemp);
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268 negateEpilogue();
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269 }
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270
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271 private void emitFNEG() {
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272 negatePrologue();
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diff changeset
273 asm.movsd(negateTemp, tasm.recordDataReferenceInCode(CiConstant.forLong(FloatSignFlip)));
2507
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274 asm.xorps(negateArgument, negateTemp);
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275 negateEpilogue();
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276 }
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277
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278 private void convertPrologue() {
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279 partialSavePrologue(convertArgument, convertResult);
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280 loadArgument(0, convertArgument);
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281 }
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282
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diff changeset
283 private void convertEpilogue() {
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284 storeArgument(0, convertResult);
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285 epilogue();
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286 }
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287
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288 private void emitD2L() {
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289 emitCOMISSD(true, false);
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290 }
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291
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292 private void emitD2I() {
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293 emitCOMISSD(true, true);
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294 }
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295
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296 private void emitF2L() {
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297 emitCOMISSD(false, false);
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298 }
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299
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300 private void emitF2I() {
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301 emitCOMISSD(false, true);
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302 }
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303
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304 private void emitCOMISSD(boolean isDouble, boolean isInt) {
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305 convertPrologue();
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306 if (isDouble) {
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307 asm.ucomisd(convertArgument, tasm.recordDataReferenceInCode(CiConstant.DOUBLE_0));
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308 } else {
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309 asm.ucomiss(convertArgument, tasm.recordDataReferenceInCode(CiConstant.FLOAT_0));
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310 }
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311 Label nan = new Label();
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312 Label ret = new Label();
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313 asm.jccb(ConditionFlag.parity, nan);
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314 asm.jccb(ConditionFlag.below, ret);
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315
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316 // input is > 0 -> return maxInt
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317 // result register already contains 0x80000000, so subtracting 1 gives 0x7fffffff
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318 asm.decrementl(convertResult, 1);
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319 asm.jmpb(ret);
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320
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321 // input is NaN -> return 0
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322 asm.bind(nan);
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323 asm.xorptr(convertResult, convertResult);
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324
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325 asm.bind(ret);
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326 convertEpilogue();
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327 }
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328
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329 private void emitStandardForward(GlobalStub.Id stub, CiRuntimeCall call) {
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330 if (stub != null) {
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331 assert stub.resultKind == call.resultKind;
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332 assert stub.arguments.length == call.arguments.length;
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333 for (int i = 0; i < stub.arguments.length; i++) {
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334 assert stub.arguments[i] == call.arguments[i];
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335 }
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336 }
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337
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338 completeSavePrologue();
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339 forwardRuntimeCall(call);
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340 epilogue();
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341 }
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342
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343 private int argumentIndexToStackOffset(int index) {
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344 // <-- lower addresses
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345 // | stub frame | caller frame |
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346 // | locals,savearea,retaddr | args ..... |
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347 return frameSize() + (index + 1) * ARGUMENT_SIZE;
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348 }
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349
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350 private void loadArgument(int index, CiRegister register) {
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351 asm.movq(register, new CiAddress(CiKind.Word, AMD64.RSP, argumentIndexToStackOffset(index)));
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352 }
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353
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354 private void storeArgument(int index, CiRegister register) {
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355 asm.movq(new CiAddress(CiKind.Word, AMD64.RSP, argumentIndexToStackOffset(index)), register);
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356 }
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357
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358 private void partialSavePrologue(CiRegister... registersToSave) {
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359 this.registersSaved = registersToSave;
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360 this.saveSize = registersToSave.length * target.wordSize;
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361
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362 // align to code size
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363 int entryCodeOffset = runtime.codeOffset();
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364 if (entryCodeOffset != 0) {
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365 asm.nop(entryCodeOffset);
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366 }
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367 asm.subq(AMD64.rsp, frameSize());
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368
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369 int index = 0;
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370 for (CiRegister r : registersToSave) {
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371 asm.movq(new CiAddress(CiKind.Word, AMD64.RSP, index * target.arch.wordSize), r);
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372 index++;
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373 }
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374
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0ea5f12e873a use com.oracle.max.asm project for assembler
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parents: 2509
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375 tasm.setFrameSize(frameSize());
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376 this.savedAllRegisters = false;
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377 }
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378
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379 private void completeSavePrologue() {
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380 CiCalleeSaveArea csa = compiler.globalStubRegisterConfig.getCalleeSaveArea();
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381 this.saveSize = csa.size;
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382 int entryCodeOffset = runtime.codeOffset();
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383 if (entryCodeOffset != 0) {
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384 // align to code size
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385 asm.nop(entryCodeOffset);
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386 }
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387 asm.subq(AMD64.rsp, frameSize());
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0ea5f12e873a use com.oracle.max.asm project for assembler
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diff changeset
388 tasm.setFrameSize(frameSize());
2507
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389 int frameToCSA = 0;
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390 asm.save(csa, frameToCSA);
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391 this.savedAllRegisters = true;
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392 }
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393
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394 private void epilogue() {
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395 assert registerRestoreEpilogueOffset == -1;
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396 registerRestoreEpilogueOffset = asm.codeBuffer.position();
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diff changeset
397
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diff changeset
398 if (savedAllRegisters) {
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diff changeset
399 CiCalleeSaveArea csa = compiler.globalStubRegisterConfig.getCalleeSaveArea();
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400 int frameToCSA = 0;
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401 asm.restore(csa, frameToCSA);
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diff changeset
402 } else {
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diff changeset
403 // saved only select registers
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diff changeset
404 for (int index = 0; index < registersSaved.length; index++) {
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diff changeset
405 CiRegister r = registersSaved[index];
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diff changeset
406 asm.movq(r, new CiAddress(CiKind.Word, AMD64.RSP, index * target.wordSize));
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diff changeset
407 }
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408 registersSaved = null;
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diff changeset
409 }
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parents:
diff changeset
410
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parents:
diff changeset
411 // Restore rsp
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412 asm.addq(AMD64.rsp, frameSize());
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413 asm.ret(0);
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diff changeset
414 }
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diff changeset
415
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diff changeset
416 private int frameSize() {
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diff changeset
417 return target.alignFrameSize(saveSize);
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diff changeset
418 }
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diff changeset
419
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diff changeset
420 private void forwardRuntimeCall(CiRuntimeCall call) {
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diff changeset
421 // Load arguments
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diff changeset
422 CiCallingConvention cc = compiler.globalStubRegisterConfig.getCallingConvention(RuntimeCall, call.arguments, target);
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diff changeset
423 for (int i = 0; i < cc.locations.length; ++i) {
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diff changeset
424 CiValue location = cc.locations[i];
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diff changeset
425 loadArgument(i, location.asRegister());
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diff changeset
426 }
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diff changeset
427
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Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
428 // Call to the runtime
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0ea5f12e873a use com.oracle.max.asm project for assembler
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parents: 2509
diff changeset
429 int before = asm.codeBuffer.position();
0ea5f12e873a use com.oracle.max.asm project for assembler
Christian.Wimmer@Oracle.com
parents: 2509
diff changeset
430 asm.call();
0ea5f12e873a use com.oracle.max.asm project for assembler
Christian.Wimmer@Oracle.com
parents: 2509
diff changeset
431 int after = asm.codeBuffer.position();
0ea5f12e873a use com.oracle.max.asm project for assembler
Christian.Wimmer@Oracle.com
parents: 2509
diff changeset
432 tasm.recordDirectCall(before, after, call, null);
2507
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
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433
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
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434 if (call.resultKind != CiKind.Void) {
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
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435 CiRegister returnRegister = compiler.globalStubRegisterConfig.getReturnRegister(call.resultKind);
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
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436 this.storeArgument(0, returnRegister);
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
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437 }
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
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438 }
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
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439 }