Mercurial > hg > truffle
comparison graal/com.oracle.jvmci.hotspot.amd64/src/com/oracle/jvmci/hotspot/amd64/AMD64HotSpotRegisterConfig.java @ 21674:e0b5d4fcd929
moved HotSpotTargetDescription and [AMD64|SPARC]HotSpotRegisterConfig into JVMCI namespace (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 02 Jun 2015 23:29:27 +0200 |
parents | graal/com.oracle.graal.hotspot.amd64/src/com/oracle/graal/hotspot/amd64/AMD64HotSpotRegisterConfig.java@5024c80224c7 |
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21673:5024c80224c7 | 21674:e0b5d4fcd929 |
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1 /* | |
2 * Copyright (c) 2011, 2012, 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 com.oracle.jvmci.hotspot.amd64; | |
24 | |
25 import com.oracle.jvmci.amd64.*; | |
26 import com.oracle.jvmci.code.Register; | |
27 import com.oracle.jvmci.code.RegisterConfig; | |
28 import com.oracle.jvmci.code.TargetDescription; | |
29 import com.oracle.jvmci.code.CallingConvention; | |
30 import com.oracle.jvmci.code.StackSlot; | |
31 import com.oracle.jvmci.code.RegisterAttributes; | |
32 import com.oracle.jvmci.code.CalleeSaveLayout; | |
33 import com.oracle.jvmci.code.Architecture; | |
34 import com.oracle.jvmci.meta.JavaType; | |
35 import com.oracle.jvmci.meta.Value; | |
36 import com.oracle.jvmci.meta.PlatformKind; | |
37 import com.oracle.jvmci.meta.AllocatableValue; | |
38 import com.oracle.jvmci.meta.Kind; | |
39 | |
40 import static com.oracle.jvmci.amd64.AMD64.*; | |
41 | |
42 import java.util.*; | |
43 | |
44 import com.oracle.jvmci.code.CallingConvention.Type; | |
45 import com.oracle.jvmci.common.*; | |
46 import com.oracle.jvmci.hotspot.*; | |
47 | |
48 public class AMD64HotSpotRegisterConfig implements RegisterConfig { | |
49 | |
50 private final Architecture architecture; | |
51 | |
52 private final Register[] allocatable; | |
53 | |
54 private final int maxFrameSize; | |
55 | |
56 /** | |
57 * The caller saved registers always include all parameter registers. | |
58 */ | |
59 private final Register[] callerSaved; | |
60 | |
61 private final boolean allAllocatableAreCallerSaved; | |
62 | |
63 private final RegisterAttributes[] attributesMap; | |
64 | |
65 public int getMaximumFrameSize() { | |
66 return maxFrameSize; | |
67 } | |
68 | |
69 @Override | |
70 public Register[] getAllocatableRegisters() { | |
71 return allocatable.clone(); | |
72 } | |
73 | |
74 public Register[] filterAllocatableRegisters(PlatformKind kind, Register[] registers) { | |
75 ArrayList<Register> list = new ArrayList<>(); | |
76 for (Register reg : registers) { | |
77 if (architecture.canStoreValue(reg.getRegisterCategory(), kind)) { | |
78 list.add(reg); | |
79 } | |
80 } | |
81 | |
82 Register[] ret = list.toArray(new Register[list.size()]); | |
83 return ret; | |
84 } | |
85 | |
86 @Override | |
87 public RegisterAttributes[] getAttributesMap() { | |
88 return attributesMap.clone(); | |
89 } | |
90 | |
91 private final Register[] javaGeneralParameterRegisters; | |
92 private final Register[] nativeGeneralParameterRegisters; | |
93 private final Register[] xmmParameterRegisters = {xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7}; | |
94 | |
95 /* | |
96 * Some ABIs (e.g. Windows) require a so-called "home space", that is a save area on the stack | |
97 * to store the argument registers | |
98 */ | |
99 private final boolean needsNativeStackHomeSpace; | |
100 | |
101 private final CalleeSaveLayout csl; | |
102 | |
103 private static Register[] initAllocatable(boolean reserveForHeapBase) { | |
104 Register[] registers = null; | |
105 // @formatter:off | |
106 if (reserveForHeapBase) { | |
107 registers = new Register[] { | |
108 rax, rbx, rcx, rdx, /*rsp,*/ rbp, rsi, rdi, r8, r9, r10, r11, /*r12,*/ r13, r14, /*r15, */ | |
109 xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, | |
110 xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15 | |
111 }; | |
112 } else { | |
113 registers = new Register[] { | |
114 rax, rbx, rcx, rdx, /*rsp,*/ rbp, rsi, rdi, r8, r9, r10, r11, r12, r13, r14, /*r15, */ | |
115 xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, | |
116 xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15 | |
117 }; | |
118 } | |
119 // @formatter:on | |
120 return registers; | |
121 } | |
122 | |
123 public AMD64HotSpotRegisterConfig(Architecture architecture, HotSpotVMConfig config) { | |
124 this(architecture, config, initAllocatable(config.useCompressedOops)); | |
125 assert callerSaved.length >= allocatable.length; | |
126 } | |
127 | |
128 public AMD64HotSpotRegisterConfig(Architecture architecture, HotSpotVMConfig config, Register[] allocatable) { | |
129 this.architecture = architecture; | |
130 this.maxFrameSize = config.maxFrameSize; | |
131 | |
132 if (config.windowsOs) { | |
133 javaGeneralParameterRegisters = new Register[]{rdx, r8, r9, rdi, rsi, rcx}; | |
134 nativeGeneralParameterRegisters = new Register[]{rcx, rdx, r8, r9}; | |
135 this.needsNativeStackHomeSpace = true; | |
136 } else { | |
137 javaGeneralParameterRegisters = new Register[]{rsi, rdx, rcx, r8, r9, rdi}; | |
138 nativeGeneralParameterRegisters = new Register[]{rdi, rsi, rdx, rcx, r8, r9}; | |
139 this.needsNativeStackHomeSpace = false; | |
140 } | |
141 | |
142 csl = null; | |
143 this.allocatable = allocatable.clone(); | |
144 Set<Register> callerSaveSet = new HashSet<>(); | |
145 Collections.addAll(callerSaveSet, allocatable); | |
146 Collections.addAll(callerSaveSet, xmmParameterRegisters); | |
147 Collections.addAll(callerSaveSet, javaGeneralParameterRegisters); | |
148 Collections.addAll(callerSaveSet, nativeGeneralParameterRegisters); | |
149 callerSaved = callerSaveSet.toArray(new Register[callerSaveSet.size()]); | |
150 | |
151 allAllocatableAreCallerSaved = true; | |
152 attributesMap = RegisterAttributes.createMap(this, AMD64.allRegisters); | |
153 } | |
154 | |
155 @Override | |
156 public Register[] getCallerSaveRegisters() { | |
157 return callerSaved; | |
158 } | |
159 | |
160 @Override | |
161 public boolean areAllAllocatableRegistersCallerSaved() { | |
162 return allAllocatableAreCallerSaved; | |
163 } | |
164 | |
165 @Override | |
166 public Register getRegisterForRole(int index) { | |
167 throw new UnsupportedOperationException(); | |
168 } | |
169 | |
170 @Override | |
171 public CallingConvention getCallingConvention(Type type, JavaType returnType, JavaType[] parameterTypes, TargetDescription target, boolean stackOnly) { | |
172 if (type == Type.NativeCall) { | |
173 return callingConvention(nativeGeneralParameterRegisters, returnType, parameterTypes, type, target, stackOnly); | |
174 } | |
175 // On x64, parameter locations are the same whether viewed | |
176 // from the caller or callee perspective | |
177 return callingConvention(javaGeneralParameterRegisters, returnType, parameterTypes, type, target, stackOnly); | |
178 } | |
179 | |
180 public Register[] getCallingConventionRegisters(Type type, Kind kind) { | |
181 if (architecture.canStoreValue(XMM, kind)) { | |
182 return xmmParameterRegisters; | |
183 } | |
184 assert architecture.canStoreValue(CPU, kind); | |
185 return type == Type.NativeCall ? nativeGeneralParameterRegisters : javaGeneralParameterRegisters; | |
186 } | |
187 | |
188 private CallingConvention callingConvention(Register[] generalParameterRegisters, JavaType returnType, JavaType[] parameterTypes, Type type, TargetDescription target, boolean stackOnly) { | |
189 AllocatableValue[] locations = new AllocatableValue[parameterTypes.length]; | |
190 | |
191 int currentGeneral = 0; | |
192 int currentXMM = 0; | |
193 int currentStackOffset = type == Type.NativeCall && needsNativeStackHomeSpace ? generalParameterRegisters.length * target.wordSize : 0; | |
194 | |
195 for (int i = 0; i < parameterTypes.length; i++) { | |
196 final Kind kind = parameterTypes[i].getKind(); | |
197 | |
198 switch (kind) { | |
199 case Byte: | |
200 case Boolean: | |
201 case Short: | |
202 case Char: | |
203 case Int: | |
204 case Long: | |
205 case Object: | |
206 if (!stackOnly && currentGeneral < generalParameterRegisters.length) { | |
207 Register register = generalParameterRegisters[currentGeneral++]; | |
208 locations[i] = register.asValue(target.getLIRKind(kind)); | |
209 } | |
210 break; | |
211 case Float: | |
212 case Double: | |
213 if (!stackOnly && currentXMM < xmmParameterRegisters.length) { | |
214 Register register = xmmParameterRegisters[currentXMM++]; | |
215 locations[i] = register.asValue(target.getLIRKind(kind)); | |
216 } | |
217 break; | |
218 default: | |
219 throw JVMCIError.shouldNotReachHere(); | |
220 } | |
221 | |
222 if (locations[i] == null) { | |
223 locations[i] = StackSlot.get(target.getLIRKind(kind.getStackKind()), currentStackOffset, !type.out); | |
224 currentStackOffset += Math.max(target.getSizeInBytes(kind), target.wordSize); | |
225 } | |
226 } | |
227 | |
228 Kind returnKind = returnType == null ? Kind.Void : returnType.getKind(); | |
229 AllocatableValue returnLocation = returnKind == Kind.Void ? Value.ILLEGAL : getReturnRegister(returnKind).asValue(target.getLIRKind(returnKind.getStackKind())); | |
230 return new CallingConvention(currentStackOffset, returnLocation, locations); | |
231 } | |
232 | |
233 @Override | |
234 public Register getReturnRegister(Kind kind) { | |
235 switch (kind) { | |
236 case Boolean: | |
237 case Byte: | |
238 case Char: | |
239 case Short: | |
240 case Int: | |
241 case Long: | |
242 case Object: | |
243 return rax; | |
244 case Float: | |
245 case Double: | |
246 return xmm0; | |
247 case Void: | |
248 case Illegal: | |
249 return null; | |
250 default: | |
251 throw new UnsupportedOperationException("no return register for type " + kind); | |
252 } | |
253 } | |
254 | |
255 @Override | |
256 public Register getFrameRegister() { | |
257 return rsp; | |
258 } | |
259 | |
260 public CalleeSaveLayout getCalleeSaveLayout() { | |
261 return csl; | |
262 } | |
263 | |
264 @Override | |
265 public String toString() { | |
266 return String.format("Allocatable: " + Arrays.toString(getAllocatableRegisters()) + "%n" + "CallerSave: " + Arrays.toString(getCallerSaveRegisters()) + "%n"); | |
267 } | |
268 } |