Mercurial > hg > graal-jvmci-8
annotate jvmci/jdk.vm.ci.hotspot.amd64/src/jdk/vm/ci/hotspot/amd64/AMD64HotSpotRegisterConfig.java @ 22784:0ab4d816a7f0
Always check the type of CallingConvention.Type
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Fri, 22 Jan 2016 14:05:49 -0800 |
parents | d63506bb5237 |
children | ac649db7fec4 |
rev | line source |
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1 /* |
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2 * Copyright (c) 2011, 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 package jdk.vm.ci.hotspot.amd64; |
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24 |
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25 import static jdk.vm.ci.amd64.AMD64.r12; |
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26 import static jdk.vm.ci.amd64.AMD64.r15; |
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27 import static jdk.vm.ci.amd64.AMD64.r8; |
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28 import static jdk.vm.ci.amd64.AMD64.r9; |
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29 import static jdk.vm.ci.amd64.AMD64.rax; |
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30 import static jdk.vm.ci.amd64.AMD64.rcx; |
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31 import static jdk.vm.ci.amd64.AMD64.rdi; |
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32 import static jdk.vm.ci.amd64.AMD64.rdx; |
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33 import static jdk.vm.ci.amd64.AMD64.rsi; |
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34 import static jdk.vm.ci.amd64.AMD64.rsp; |
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35 import static jdk.vm.ci.amd64.AMD64.xmm0; |
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36 import static jdk.vm.ci.amd64.AMD64.xmm1; |
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37 import static jdk.vm.ci.amd64.AMD64.xmm2; |
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38 import static jdk.vm.ci.amd64.AMD64.xmm3; |
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39 import static jdk.vm.ci.amd64.AMD64.xmm4; |
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40 import static jdk.vm.ci.amd64.AMD64.xmm5; |
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41 import static jdk.vm.ci.amd64.AMD64.xmm6; |
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42 import static jdk.vm.ci.amd64.AMD64.xmm7; |
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43 |
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44 import java.util.ArrayList; |
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45 import java.util.Arrays; |
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46 import java.util.Collections; |
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47 import java.util.HashSet; |
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48 import java.util.Set; |
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49 |
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50 import jdk.vm.ci.code.Architecture; |
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51 import jdk.vm.ci.code.CallingConvention; |
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52 import jdk.vm.ci.code.CallingConvention.Type; |
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53 import jdk.vm.ci.code.Register; |
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54 import jdk.vm.ci.code.RegisterAttributes; |
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55 import jdk.vm.ci.code.RegisterConfig; |
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56 import jdk.vm.ci.code.StackSlot; |
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57 import jdk.vm.ci.code.TargetDescription; |
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58 import jdk.vm.ci.common.JVMCIError; |
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59 import jdk.vm.ci.hotspot.HotSpotCallingConventionType; |
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60 import jdk.vm.ci.hotspot.HotSpotVMConfig; |
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61 import jdk.vm.ci.meta.AllocatableValue; |
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62 import jdk.vm.ci.meta.JavaKind; |
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63 import jdk.vm.ci.meta.JavaType; |
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64 import jdk.vm.ci.meta.LIRKind; |
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65 import jdk.vm.ci.meta.PlatformKind; |
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66 import jdk.vm.ci.meta.Value; |
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67 |
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68 public class AMD64HotSpotRegisterConfig implements RegisterConfig { |
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69 |
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70 private final Architecture architecture; |
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71 |
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72 private final Register[] allocatable; |
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73 |
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74 private final int maxFrameSize; |
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75 |
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76 /** |
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77 * The caller saved registers always include all parameter registers. |
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78 */ |
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79 private final Register[] callerSaved; |
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80 |
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81 private final boolean allAllocatableAreCallerSaved; |
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82 |
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83 private final RegisterAttributes[] attributesMap; |
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84 |
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85 public int getMaximumFrameSize() { |
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86 return maxFrameSize; |
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87 } |
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88 |
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89 @Override |
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90 public Register[] getAllocatableRegisters() { |
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91 return allocatable.clone(); |
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92 } |
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93 |
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94 @Override |
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95 public Register[] filterAllocatableRegisters(PlatformKind kind, Register[] registers) { |
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96 ArrayList<Register> list = new ArrayList<>(); |
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97 for (Register reg : registers) { |
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98 if (architecture.canStoreValue(reg.getRegisterCategory(), kind)) { |
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99 list.add(reg); |
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100 } |
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101 } |
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102 |
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103 Register[] ret = list.toArray(new Register[list.size()]); |
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104 return ret; |
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105 } |
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106 |
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107 @Override |
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108 public RegisterAttributes[] getAttributesMap() { |
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109 return attributesMap.clone(); |
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110 } |
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111 |
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112 private final Register[] javaGeneralParameterRegisters; |
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113 private final Register[] nativeGeneralParameterRegisters; |
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114 private final Register[] xmmParameterRegisters = {xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7}; |
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115 |
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116 /* |
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117 * Some ABIs (e.g. Windows) require a so-called "home space", that is a save area on the stack |
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118 * to store the argument registers |
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119 */ |
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120 private final boolean needsNativeStackHomeSpace; |
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121 |
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122 private static Register[] initAllocatable(Architecture arch, boolean reserveForHeapBase) { |
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123 Register[] allRegisters = arch.getAvailableValueRegisters(); |
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124 Register[] registers = new Register[allRegisters.length - (reserveForHeapBase ? 3 : 2)]; |
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125 |
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126 int idx = 0; |
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127 for (Register reg : allRegisters) { |
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128 if (reg.equals(rsp) || reg.equals(r15)) { |
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129 // skip stack pointer and thread register |
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130 continue; |
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131 } |
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132 if (reserveForHeapBase && reg.equals(r12)) { |
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133 // skip heap base register |
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134 continue; |
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135 } |
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136 |
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137 registers[idx++] = reg; |
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138 } |
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139 |
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140 assert idx == registers.length; |
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141 return registers; |
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142 } |
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143 |
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144 public AMD64HotSpotRegisterConfig(Architecture architecture, HotSpotVMConfig config) { |
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145 this(architecture, config, initAllocatable(architecture, config.useCompressedOops)); |
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146 assert callerSaved.length >= allocatable.length; |
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147 } |
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148 |
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149 public AMD64HotSpotRegisterConfig(Architecture architecture, HotSpotVMConfig config, Register[] allocatable) { |
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150 this.architecture = architecture; |
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151 this.maxFrameSize = config.maxFrameSize; |
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152 |
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153 if (config.windowsOs) { |
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154 javaGeneralParameterRegisters = new Register[]{rdx, r8, r9, rdi, rsi, rcx}; |
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155 nativeGeneralParameterRegisters = new Register[]{rcx, rdx, r8, r9}; |
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156 this.needsNativeStackHomeSpace = true; |
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157 } else { |
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158 javaGeneralParameterRegisters = new Register[]{rsi, rdx, rcx, r8, r9, rdi}; |
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159 nativeGeneralParameterRegisters = new Register[]{rdi, rsi, rdx, rcx, r8, r9}; |
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160 this.needsNativeStackHomeSpace = false; |
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161 } |
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162 |
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163 this.allocatable = allocatable; |
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164 Set<Register> callerSaveSet = new HashSet<>(); |
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165 Collections.addAll(callerSaveSet, allocatable); |
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166 Collections.addAll(callerSaveSet, xmmParameterRegisters); |
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167 Collections.addAll(callerSaveSet, javaGeneralParameterRegisters); |
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168 Collections.addAll(callerSaveSet, nativeGeneralParameterRegisters); |
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169 callerSaved = callerSaveSet.toArray(new Register[callerSaveSet.size()]); |
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170 |
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171 allAllocatableAreCallerSaved = true; |
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172 attributesMap = RegisterAttributes.createMap(this, architecture.getRegisters()); |
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173 } |
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174 |
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175 @Override |
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176 public Register[] getCallerSaveRegisters() { |
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177 return callerSaved; |
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178 } |
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179 |
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180 @Override |
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181 public Register[] getCalleeSaveRegisters() { |
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182 return null; |
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183 } |
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184 |
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185 @Override |
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186 public boolean areAllAllocatableRegistersCallerSaved() { |
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187 return allAllocatableAreCallerSaved; |
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188 } |
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|
189 |
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|
190 @Override |
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191 public Register getRegisterForRole(int index) { |
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192 throw new UnsupportedOperationException(); |
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193 } |
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194 |
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195 @Override |
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196 public CallingConvention getCallingConvention(Type type, JavaType returnType, JavaType[] parameterTypes, TargetDescription target) { |
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197 HotSpotCallingConventionType hotspotType = (HotSpotCallingConventionType) type; |
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198 if (type == HotSpotCallingConventionType.NativeCall) { |
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199 return callingConvention(nativeGeneralParameterRegisters, returnType, parameterTypes, hotspotType, target); |
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200 } |
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201 // On x64, parameter locations are the same whether viewed |
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202 // from the caller or callee perspective |
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203 return callingConvention(javaGeneralParameterRegisters, returnType, parameterTypes, hotspotType, target); |
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204 } |
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205 |
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206 @Override |
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207 public Register[] getCallingConventionRegisters(Type type, JavaKind kind) { |
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208 HotSpotCallingConventionType hotspotType = (HotSpotCallingConventionType) type; |
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209 switch (kind) { |
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210 case Boolean: |
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211 case Byte: |
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212 case Short: |
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213 case Char: |
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214 case Int: |
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215 case Long: |
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216 case Object: |
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217 return hotspotType == HotSpotCallingConventionType.NativeCall ? nativeGeneralParameterRegisters : javaGeneralParameterRegisters; |
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218 case Float: |
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219 case Double: |
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220 return xmmParameterRegisters; |
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221 default: |
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222 throw JVMCIError.shouldNotReachHere(); |
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223 } |
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224 } |
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225 |
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226 private CallingConvention callingConvention(Register[] generalParameterRegisters, JavaType returnType, JavaType[] parameterTypes, HotSpotCallingConventionType type, TargetDescription target) { |
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227 AllocatableValue[] locations = new AllocatableValue[parameterTypes.length]; |
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228 |
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229 int currentGeneral = 0; |
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230 int currentXMM = 0; |
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231 int currentStackOffset = type == HotSpotCallingConventionType.NativeCall && needsNativeStackHomeSpace ? generalParameterRegisters.length * target.wordSize : 0; |
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232 |
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233 for (int i = 0; i < parameterTypes.length; i++) { |
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234 final JavaKind kind = parameterTypes[i].getJavaKind().getStackKind(); |
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235 |
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236 switch (kind) { |
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237 case Byte: |
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238 case Boolean: |
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239 case Short: |
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240 case Char: |
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241 case Int: |
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242 case Long: |
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243 case Object: |
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244 if (currentGeneral < generalParameterRegisters.length) { |
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245 Register register = generalParameterRegisters[currentGeneral++]; |
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246 locations[i] = register.asValue(target.getLIRKind(kind)); |
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247 } |
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248 break; |
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249 case Float: |
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250 case Double: |
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251 if (currentXMM < xmmParameterRegisters.length) { |
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252 Register register = xmmParameterRegisters[currentXMM++]; |
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253 locations[i] = register.asValue(target.getLIRKind(kind)); |
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254 } |
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255 break; |
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256 default: |
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257 throw JVMCIError.shouldNotReachHere(); |
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258 } |
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259 |
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260 if (locations[i] == null) { |
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261 LIRKind lirKind = target.getLIRKind(kind); |
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262 locations[i] = StackSlot.get(lirKind, currentStackOffset, !type.out); |
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263 currentStackOffset += Math.max(lirKind.getPlatformKind().getSizeInBytes(), target.wordSize); |
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264 } |
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265 } |
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266 |
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267 JavaKind returnKind = returnType == null ? JavaKind.Void : returnType.getJavaKind(); |
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268 AllocatableValue returnLocation = returnKind == JavaKind.Void ? Value.ILLEGAL : getReturnRegister(returnKind).asValue(target.getLIRKind(returnKind.getStackKind())); |
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269 return new CallingConvention(currentStackOffset, returnLocation, locations); |
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270 } |
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271 |
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272 @Override |
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273 public Register getReturnRegister(JavaKind kind) { |
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274 switch (kind) { |
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275 case Boolean: |
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276 case Byte: |
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277 case Char: |
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278 case Short: |
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279 case Int: |
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280 case Long: |
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281 case Object: |
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282 return rax; |
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283 case Float: |
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284 case Double: |
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285 return xmm0; |
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286 case Void: |
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287 case Illegal: |
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288 return null; |
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289 default: |
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290 throw new UnsupportedOperationException("no return register for type " + kind); |
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291 } |
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292 } |
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293 |
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294 @Override |
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295 public Register getFrameRegister() { |
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296 return rsp; |
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297 } |
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298 |
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299 @Override |
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300 public String toString() { |
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301 return String.format("Allocatable: " + Arrays.toString(getAllocatableRegisters()) + "%n" + "CallerSave: " + Arrays.toString(getCallerSaveRegisters()) + "%n"); |
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302 } |
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303 } |