Mercurial > hg > graal-jvmci-8
annotate jvmci/jdk.vm.ci.hotspot.aarch64/src/jdk/vm/ci/hotspot/aarch64/AArch64HotSpotRegisterConfig.java @ 23387:a920338dd4d4
remove JVMCIError and UnsafeUtil classes (JDK-8156759)
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 11 May 2016 15:54:36 +0200 |
parents | 7d014b014ce7 |
children | b3a816d3b844 |
rev | line source |
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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.hotspot.HotSpotCallingConventionType; |
22759 | 68 import jdk.vm.ci.hotspot.HotSpotVMConfig; |
69 import jdk.vm.ci.meta.AllocatableValue; | |
70 import jdk.vm.ci.meta.JavaKind; | |
71 import jdk.vm.ci.meta.JavaType; | |
72 import jdk.vm.ci.meta.LIRKind; | |
73 import jdk.vm.ci.meta.PlatformKind; | |
74 import jdk.vm.ci.meta.Value; | |
75 | |
76 public class AArch64HotSpotRegisterConfig implements RegisterConfig { | |
77 | |
78 private final Architecture architecture; | |
79 | |
80 private final Register[] allocatable; | |
81 | |
82 private final int maxFrameSize; | |
83 | |
84 /** | |
85 * The caller saved registers always include all parameter registers. | |
86 */ | |
87 private final Register[] callerSaved; | |
88 | |
89 private final boolean allAllocatableAreCallerSaved; | |
90 | |
91 private final RegisterAttributes[] attributesMap; | |
92 | |
93 public int getMaximumFrameSize() { | |
94 return maxFrameSize; | |
95 } | |
96 | |
97 @Override | |
98 public Register[] getAllocatableRegisters() { | |
99 return allocatable.clone(); | |
100 } | |
101 | |
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102 @Override |
22759 | 103 public Register[] filterAllocatableRegisters(PlatformKind kind, Register[] registers) { |
104 ArrayList<Register> list = new ArrayList<>(); | |
105 for (Register reg : registers) { | |
106 if (architecture.canStoreValue(reg.getRegisterCategory(), kind)) { | |
107 list.add(reg); | |
108 } | |
109 } | |
110 | |
111 Register[] ret = list.toArray(new Register[list.size()]); | |
112 return ret; | |
113 } | |
114 | |
115 @Override | |
116 public RegisterAttributes[] getAttributesMap() { | |
117 return attributesMap.clone(); | |
118 } | |
119 | |
120 private final Register[] javaGeneralParameterRegisters = {r1, r2, r3, r4, r5, r6, r7, r0}; | |
121 private final Register[] nativeGeneralParameterRegisters = {r0, r1, r2, r3, r4, r5, r6, r7}; | |
122 private final Register[] simdParameterRegisters = {v0, v1, v2, v3, v4, v5, v6, v7}; | |
123 | |
124 public static final Register inlineCacheRegister = r9; | |
125 | |
126 /** | |
127 * Vtable stubs expect the metaspace Method in r12. | |
128 */ | |
129 public static final Register metaspaceMethodRegister = r12; | |
130 | |
131 public static final Register heapBaseRegister = r27; | |
132 public static final Register threadRegister = r28; | |
133 public static final Register fp = r29; | |
134 | |
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135 private static final Register[] reservedRegisters = {threadRegister, fp, lr, r31, zr, sp}; |
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136 |
22759 | 137 private static Register[] initAllocatable(Architecture arch, boolean reserveForHeapBase) { |
138 Register[] allRegisters = arch.getAvailableValueRegisters(); | |
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139 Register[] registers = new Register[allRegisters.length - reservedRegisters.length - (reserveForHeapBase ? 1 : 0)]; |
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140 List<Register> reservedRegistersList = Arrays.asList(reservedRegisters); |
22759 | 141 |
142 int idx = 0; | |
143 for (Register reg : allRegisters) { | |
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144 if (reservedRegistersList.contains(reg)) { |
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145 // skip reserved registers |
22759 | 146 continue; |
147 } | |
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148 assert !(reg.equals(threadRegister) || reg.equals(fp) || reg.equals(lr) || reg.equals(r31) || reg.equals(zr) || reg.equals(sp)); |
22759 | 149 if (reserveForHeapBase && reg.equals(heapBaseRegister)) { |
150 // skip heap base register | |
151 continue; | |
152 } | |
153 | |
154 registers[idx++] = reg; | |
155 } | |
156 | |
157 assert idx == registers.length; | |
158 return registers; | |
159 } | |
160 | |
161 public AArch64HotSpotRegisterConfig(Architecture architecture, HotSpotVMConfig config) { | |
162 this(architecture, config, initAllocatable(architecture, config.useCompressedOops)); | |
163 assert callerSaved.length >= allocatable.length; | |
164 } | |
165 | |
166 public AArch64HotSpotRegisterConfig(Architecture architecture, HotSpotVMConfig config, Register[] allocatable) { | |
167 this.architecture = architecture; | |
168 this.maxFrameSize = config.maxFrameSize; | |
169 | |
170 this.allocatable = allocatable.clone(); | |
171 Set<Register> callerSaveSet = new HashSet<>(); | |
172 Collections.addAll(callerSaveSet, allocatable); | |
173 Collections.addAll(callerSaveSet, simdParameterRegisters); | |
174 Collections.addAll(callerSaveSet, javaGeneralParameterRegisters); | |
175 Collections.addAll(callerSaveSet, nativeGeneralParameterRegisters); | |
176 callerSaved = callerSaveSet.toArray(new Register[callerSaveSet.size()]); | |
177 | |
178 allAllocatableAreCallerSaved = true; | |
179 attributesMap = RegisterAttributes.createMap(this, AArch64.allRegisters); | |
180 } | |
181 | |
182 @Override | |
183 public Register[] getCallerSaveRegisters() { | |
184 return callerSaved; | |
185 } | |
186 | |
187 public Register[] getCalleeSaveRegisters() { | |
188 return null; | |
189 } | |
190 | |
191 @Override | |
192 public boolean areAllAllocatableRegistersCallerSaved() { | |
193 return allAllocatableAreCallerSaved; | |
194 } | |
195 | |
196 @Override | |
197 public Register getRegisterForRole(int index) { | |
198 throw new UnsupportedOperationException(); | |
199 } | |
200 | |
201 @Override | |
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202 public CallingConvention getCallingConvention(Type type, JavaType returnType, JavaType[] parameterTypes, TargetDescription target) { |
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203 HotSpotCallingConventionType hotspotType = (HotSpotCallingConventionType) type; |
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204 if (type == HotSpotCallingConventionType.NativeCall) { |
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205 return callingConvention(nativeGeneralParameterRegisters, returnType, parameterTypes, hotspotType, target); |
22759 | 206 } |
207 // On x64, parameter locations are the same whether viewed | |
208 // from the caller or callee perspective | |
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209 return callingConvention(javaGeneralParameterRegisters, returnType, parameterTypes, hotspotType, target); |
22759 | 210 } |
211 | |
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212 @Override |
22759 | 213 public Register[] getCallingConventionRegisters(Type type, JavaKind kind) { |
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214 HotSpotCallingConventionType hotspotType = (HotSpotCallingConventionType) type; |
22759 | 215 switch (kind) { |
216 case Boolean: | |
217 case Byte: | |
218 case Short: | |
219 case Char: | |
220 case Int: | |
221 case Long: | |
222 case Object: | |
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223 return hotspotType == HotSpotCallingConventionType.NativeCall ? nativeGeneralParameterRegisters : javaGeneralParameterRegisters; |
22759 | 224 case Float: |
225 case Double: | |
226 return simdParameterRegisters; | |
227 default: | |
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parents:
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228 throw new InternalError("should not reach here"); |
22759 | 229 } |
230 } | |
231 | |
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parents:
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232 private CallingConvention callingConvention(Register[] generalParameterRegisters, JavaType returnType, JavaType[] parameterTypes, HotSpotCallingConventionType type, TargetDescription target) { |
22759 | 233 AllocatableValue[] locations = new AllocatableValue[parameterTypes.length]; |
234 | |
235 int currentGeneral = 0; | |
236 int currentSIMD = 0; | |
237 int currentStackOffset = 0; | |
238 | |
239 for (int i = 0; i < parameterTypes.length; i++) { | |
240 final JavaKind kind = parameterTypes[i].getJavaKind().getStackKind(); | |
241 | |
242 switch (kind) { | |
243 case Byte: | |
244 case Boolean: | |
245 case Short: | |
246 case Char: | |
247 case Int: | |
248 case Long: | |
249 case Object: | |
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parents:
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diff
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250 if (currentGeneral < generalParameterRegisters.length) { |
22759 | 251 Register register = generalParameterRegisters[currentGeneral++]; |
252 locations[i] = register.asValue(target.getLIRKind(kind)); | |
253 } | |
254 break; | |
255 case Float: | |
256 case Double: | |
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parents:
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257 if (currentSIMD < simdParameterRegisters.length) { |
22759 | 258 Register register = simdParameterRegisters[currentSIMD++]; |
259 locations[i] = register.asValue(target.getLIRKind(kind)); | |
260 } | |
261 break; | |
262 default: | |
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parents:
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263 throw new InternalError("should not reach here"); |
22759 | 264 } |
265 | |
266 if (locations[i] == null) { | |
267 LIRKind lirKind = target.getLIRKind(kind); | |
268 locations[i] = StackSlot.get(lirKind, currentStackOffset, !type.out); | |
269 currentStackOffset += Math.max(lirKind.getPlatformKind().getSizeInBytes(), target.wordSize); | |
270 } | |
271 } | |
272 | |
273 JavaKind returnKind = returnType == null ? JavaKind.Void : returnType.getJavaKind(); | |
274 AllocatableValue returnLocation = returnKind == JavaKind.Void ? Value.ILLEGAL : getReturnRegister(returnKind).asValue(target.getLIRKind(returnKind.getStackKind())); | |
275 return new CallingConvention(currentStackOffset, returnLocation, locations); | |
276 } | |
277 | |
278 @Override | |
279 public Register getReturnRegister(JavaKind kind) { | |
280 switch (kind) { | |
281 case Boolean: | |
282 case Byte: | |
283 case Char: | |
284 case Short: | |
285 case Int: | |
286 case Long: | |
287 case Object: | |
288 return r0; | |
289 case Float: | |
290 case Double: | |
291 return v0; | |
292 case Void: | |
293 case Illegal: | |
294 return null; | |
295 default: | |
296 throw new UnsupportedOperationException("no return register for type " + kind); | |
297 } | |
298 } | |
299 | |
300 @Override | |
301 public Register getFrameRegister() { | |
302 return sp; | |
303 } | |
304 | |
305 @Override | |
306 public String toString() { | |
307 return String.format("Allocatable: " + Arrays.toString(getAllocatableRegisters()) + "%n" + "CallerSave: " + Arrays.toString(getCallerSaveRegisters()) + "%n"); | |
308 } | |
309 } |