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annotate jvmci/jdk.vm.ci.hotspot.aarch64/src/jdk/vm/ci/hotspot/aarch64/AArch64HotSpotRegisterConfig.java @ 23392:b3a816d3b844
Backed out changeset: a920338dd4d4
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Thu, 12 May 2016 11:06:49 +0200 |
| parents | a920338dd4d4 |
| children | 1d4ce2d19e52 |
| rev | line source |
|---|---|
| 22759 | 1 /* |
| 2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 */ | |
| 23 package jdk.vm.ci.hotspot.aarch64; | |
| 24 | |
| 25 import static jdk.vm.ci.aarch64.AArch64.lr; | |
| 26 import static jdk.vm.ci.aarch64.AArch64.r0; | |
| 27 import static jdk.vm.ci.aarch64.AArch64.r1; | |
| 28 import static jdk.vm.ci.aarch64.AArch64.r12; | |
| 29 import static jdk.vm.ci.aarch64.AArch64.r2; | |
| 30 import static jdk.vm.ci.aarch64.AArch64.r27; | |
| 31 import static jdk.vm.ci.aarch64.AArch64.r28; | |
| 32 import static jdk.vm.ci.aarch64.AArch64.r29; | |
| 33 import static jdk.vm.ci.aarch64.AArch64.r3; | |
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34 import static jdk.vm.ci.aarch64.AArch64.r31; |
| 22759 | 35 import static jdk.vm.ci.aarch64.AArch64.r4; |
| 36 import static jdk.vm.ci.aarch64.AArch64.r5; | |
| 37 import static jdk.vm.ci.aarch64.AArch64.r6; | |
| 38 import static jdk.vm.ci.aarch64.AArch64.r7; | |
| 39 import static jdk.vm.ci.aarch64.AArch64.r9; | |
| 40 import static jdk.vm.ci.aarch64.AArch64.sp; | |
| 41 import static jdk.vm.ci.aarch64.AArch64.v0; | |
| 42 import static jdk.vm.ci.aarch64.AArch64.v1; | |
| 43 import static jdk.vm.ci.aarch64.AArch64.v2; | |
| 44 import static jdk.vm.ci.aarch64.AArch64.v3; | |
| 45 import static jdk.vm.ci.aarch64.AArch64.v4; | |
| 46 import static jdk.vm.ci.aarch64.AArch64.v5; | |
| 47 import static jdk.vm.ci.aarch64.AArch64.v6; | |
| 48 import static jdk.vm.ci.aarch64.AArch64.v7; | |
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49 import static jdk.vm.ci.aarch64.AArch64.zr; |
| 22759 | 50 |
| 51 import java.util.ArrayList; | |
| 52 import java.util.Arrays; | |
| 53 import java.util.Collections; | |
| 54 import java.util.HashSet; | |
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55 import java.util.List; |
| 22759 | 56 import java.util.Set; |
| 57 | |
| 58 import jdk.vm.ci.aarch64.AArch64; | |
| 59 import jdk.vm.ci.code.Architecture; | |
| 60 import jdk.vm.ci.code.CallingConvention; | |
| 61 import jdk.vm.ci.code.CallingConvention.Type; | |
| 62 import jdk.vm.ci.code.Register; | |
| 63 import jdk.vm.ci.code.RegisterAttributes; | |
| 64 import jdk.vm.ci.code.RegisterConfig; | |
| 65 import jdk.vm.ci.code.StackSlot; | |
| 66 import jdk.vm.ci.code.TargetDescription; | |
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67 import jdk.vm.ci.common.JVMCIError; |
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68 import jdk.vm.ci.hotspot.HotSpotCallingConventionType; |
| 22759 | 69 import jdk.vm.ci.hotspot.HotSpotVMConfig; |
| 70 import jdk.vm.ci.meta.AllocatableValue; | |
| 71 import jdk.vm.ci.meta.JavaKind; | |
| 72 import jdk.vm.ci.meta.JavaType; | |
| 73 import jdk.vm.ci.meta.LIRKind; | |
| 74 import jdk.vm.ci.meta.PlatformKind; | |
| 75 import jdk.vm.ci.meta.Value; | |
| 76 | |
| 77 public class AArch64HotSpotRegisterConfig implements RegisterConfig { | |
| 78 | |
| 79 private final Architecture architecture; | |
| 80 | |
| 81 private final Register[] allocatable; | |
| 82 | |
| 83 private final int maxFrameSize; | |
| 84 | |
| 85 /** | |
| 86 * The caller saved registers always include all parameter registers. | |
| 87 */ | |
| 88 private final Register[] callerSaved; | |
| 89 | |
| 90 private final boolean allAllocatableAreCallerSaved; | |
| 91 | |
| 92 private final RegisterAttributes[] attributesMap; | |
| 93 | |
| 94 public int getMaximumFrameSize() { | |
| 95 return maxFrameSize; | |
| 96 } | |
| 97 | |
| 98 @Override | |
| 99 public Register[] getAllocatableRegisters() { | |
| 100 return allocatable.clone(); | |
| 101 } | |
| 102 | |
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103 @Override |
| 22759 | 104 public Register[] filterAllocatableRegisters(PlatformKind kind, Register[] registers) { |
| 105 ArrayList<Register> list = new ArrayList<>(); | |
| 106 for (Register reg : registers) { | |
| 107 if (architecture.canStoreValue(reg.getRegisterCategory(), kind)) { | |
| 108 list.add(reg); | |
| 109 } | |
| 110 } | |
| 111 | |
| 112 Register[] ret = list.toArray(new Register[list.size()]); | |
| 113 return ret; | |
| 114 } | |
| 115 | |
| 116 @Override | |
| 117 public RegisterAttributes[] getAttributesMap() { | |
| 118 return attributesMap.clone(); | |
| 119 } | |
| 120 | |
| 121 private final Register[] javaGeneralParameterRegisters = {r1, r2, r3, r4, r5, r6, r7, r0}; | |
| 122 private final Register[] nativeGeneralParameterRegisters = {r0, r1, r2, r3, r4, r5, r6, r7}; | |
| 123 private final Register[] simdParameterRegisters = {v0, v1, v2, v3, v4, v5, v6, v7}; | |
| 124 | |
| 125 public static final Register inlineCacheRegister = r9; | |
| 126 | |
| 127 /** | |
| 128 * Vtable stubs expect the metaspace Method in r12. | |
| 129 */ | |
| 130 public static final Register metaspaceMethodRegister = r12; | |
| 131 | |
| 132 public static final Register heapBaseRegister = r27; | |
| 133 public static final Register threadRegister = r28; | |
| 134 public static final Register fp = r29; | |
| 135 | |
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136 private static final Register[] reservedRegisters = {threadRegister, fp, lr, r31, zr, sp}; |
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137 |
| 22759 | 138 private static Register[] initAllocatable(Architecture arch, boolean reserveForHeapBase) { |
| 139 Register[] allRegisters = arch.getAvailableValueRegisters(); | |
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140 Register[] registers = new Register[allRegisters.length - reservedRegisters.length - (reserveForHeapBase ? 1 : 0)]; |
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141 List<Register> reservedRegistersList = Arrays.asList(reservedRegisters); |
| 22759 | 142 |
| 143 int idx = 0; | |
| 144 for (Register reg : allRegisters) { | |
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145 if (reservedRegistersList.contains(reg)) { |
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146 // skip reserved registers |
| 22759 | 147 continue; |
| 148 } | |
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149 assert !(reg.equals(threadRegister) || reg.equals(fp) || reg.equals(lr) || reg.equals(r31) || reg.equals(zr) || reg.equals(sp)); |
| 22759 | 150 if (reserveForHeapBase && reg.equals(heapBaseRegister)) { |
| 151 // skip heap base register | |
| 152 continue; | |
| 153 } | |
| 154 | |
| 155 registers[idx++] = reg; | |
| 156 } | |
| 157 | |
| 158 assert idx == registers.length; | |
| 159 return registers; | |
| 160 } | |
| 161 | |
| 162 public AArch64HotSpotRegisterConfig(Architecture architecture, HotSpotVMConfig config) { | |
| 163 this(architecture, config, initAllocatable(architecture, config.useCompressedOops)); | |
| 164 assert callerSaved.length >= allocatable.length; | |
| 165 } | |
| 166 | |
| 167 public AArch64HotSpotRegisterConfig(Architecture architecture, HotSpotVMConfig config, Register[] allocatable) { | |
| 168 this.architecture = architecture; | |
| 169 this.maxFrameSize = config.maxFrameSize; | |
| 170 | |
| 171 this.allocatable = allocatable.clone(); | |
| 172 Set<Register> callerSaveSet = new HashSet<>(); | |
| 173 Collections.addAll(callerSaveSet, allocatable); | |
| 174 Collections.addAll(callerSaveSet, simdParameterRegisters); | |
| 175 Collections.addAll(callerSaveSet, javaGeneralParameterRegisters); | |
| 176 Collections.addAll(callerSaveSet, nativeGeneralParameterRegisters); | |
| 177 callerSaved = callerSaveSet.toArray(new Register[callerSaveSet.size()]); | |
| 178 | |
| 179 allAllocatableAreCallerSaved = true; | |
| 180 attributesMap = RegisterAttributes.createMap(this, AArch64.allRegisters); | |
| 181 } | |
| 182 | |
| 183 @Override | |
| 184 public Register[] getCallerSaveRegisters() { | |
| 185 return callerSaved; | |
| 186 } | |
| 187 | |
| 188 public Register[] getCalleeSaveRegisters() { | |
| 189 return null; | |
| 190 } | |
| 191 | |
| 192 @Override | |
| 193 public boolean areAllAllocatableRegistersCallerSaved() { | |
| 194 return allAllocatableAreCallerSaved; | |
| 195 } | |
| 196 | |
| 197 @Override | |
| 198 public Register getRegisterForRole(int index) { | |
| 199 throw new UnsupportedOperationException(); | |
| 200 } | |
| 201 | |
| 202 @Override | |
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203 public CallingConvention getCallingConvention(Type type, JavaType returnType, JavaType[] parameterTypes, TargetDescription target) { |
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204 HotSpotCallingConventionType hotspotType = (HotSpotCallingConventionType) type; |
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205 if (type == HotSpotCallingConventionType.NativeCall) { |
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parents:
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206 return callingConvention(nativeGeneralParameterRegisters, returnType, parameterTypes, hotspotType, target); |
| 22759 | 207 } |
| 208 // On x64, parameter locations are the same whether viewed | |
| 209 // from the caller or callee perspective | |
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210 return callingConvention(javaGeneralParameterRegisters, returnType, parameterTypes, hotspotType, target); |
| 22759 | 211 } |
| 212 | |
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213 @Override |
| 22759 | 214 public Register[] getCallingConventionRegisters(Type type, JavaKind kind) { |
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parents:
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215 HotSpotCallingConventionType hotspotType = (HotSpotCallingConventionType) type; |
| 22759 | 216 switch (kind) { |
| 217 case Boolean: | |
| 218 case Byte: | |
| 219 case Short: | |
| 220 case Char: | |
| 221 case Int: | |
| 222 case Long: | |
| 223 case Object: | |
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224 return hotspotType == HotSpotCallingConventionType.NativeCall ? nativeGeneralParameterRegisters : javaGeneralParameterRegisters; |
| 22759 | 225 case Float: |
| 226 case Double: | |
| 227 return simdParameterRegisters; | |
| 228 default: | |
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229 throw JVMCIError.shouldNotReachHere(); |
| 22759 | 230 } |
| 231 } | |
| 232 | |
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233 private CallingConvention callingConvention(Register[] generalParameterRegisters, JavaType returnType, JavaType[] parameterTypes, HotSpotCallingConventionType type, TargetDescription target) { |
| 22759 | 234 AllocatableValue[] locations = new AllocatableValue[parameterTypes.length]; |
| 235 | |
| 236 int currentGeneral = 0; | |
| 237 int currentSIMD = 0; | |
| 238 int currentStackOffset = 0; | |
| 239 | |
| 240 for (int i = 0; i < parameterTypes.length; i++) { | |
| 241 final JavaKind kind = parameterTypes[i].getJavaKind().getStackKind(); | |
| 242 | |
| 243 switch (kind) { | |
| 244 case Byte: | |
| 245 case Boolean: | |
| 246 case Short: | |
| 247 case Char: | |
| 248 case Int: | |
| 249 case Long: | |
| 250 case Object: | |
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parents:
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251 if (currentGeneral < generalParameterRegisters.length) { |
| 22759 | 252 Register register = generalParameterRegisters[currentGeneral++]; |
| 253 locations[i] = register.asValue(target.getLIRKind(kind)); | |
| 254 } | |
| 255 break; | |
| 256 case Float: | |
| 257 case Double: | |
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258 if (currentSIMD < simdParameterRegisters.length) { |
| 22759 | 259 Register register = simdParameterRegisters[currentSIMD++]; |
| 260 locations[i] = register.asValue(target.getLIRKind(kind)); | |
| 261 } | |
| 262 break; | |
| 263 default: | |
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264 throw JVMCIError.shouldNotReachHere(); |
| 22759 | 265 } |
| 266 | |
| 267 if (locations[i] == null) { | |
| 268 LIRKind lirKind = target.getLIRKind(kind); | |
| 269 locations[i] = StackSlot.get(lirKind, currentStackOffset, !type.out); | |
| 270 currentStackOffset += Math.max(lirKind.getPlatformKind().getSizeInBytes(), target.wordSize); | |
| 271 } | |
| 272 } | |
| 273 | |
| 274 JavaKind returnKind = returnType == null ? JavaKind.Void : returnType.getJavaKind(); | |
| 275 AllocatableValue returnLocation = returnKind == JavaKind.Void ? Value.ILLEGAL : getReturnRegister(returnKind).asValue(target.getLIRKind(returnKind.getStackKind())); | |
| 276 return new CallingConvention(currentStackOffset, returnLocation, locations); | |
| 277 } | |
| 278 | |
| 279 @Override | |
| 280 public Register getReturnRegister(JavaKind kind) { | |
| 281 switch (kind) { | |
| 282 case Boolean: | |
| 283 case Byte: | |
| 284 case Char: | |
| 285 case Short: | |
| 286 case Int: | |
| 287 case Long: | |
| 288 case Object: | |
| 289 return r0; | |
| 290 case Float: | |
| 291 case Double: | |
| 292 return v0; | |
| 293 case Void: | |
| 294 case Illegal: | |
| 295 return null; | |
| 296 default: | |
| 297 throw new UnsupportedOperationException("no return register for type " + kind); | |
| 298 } | |
| 299 } | |
| 300 | |
| 301 @Override | |
| 302 public Register getFrameRegister() { | |
| 303 return sp; | |
| 304 } | |
| 305 | |
| 306 @Override | |
| 307 public String toString() { | |
| 308 return String.format("Allocatable: " + Arrays.toString(getAllocatableRegisters()) + "%n" + "CallerSave: " + Arrays.toString(getCallerSaveRegisters()) + "%n"); | |
| 309 } | |
| 310 } |