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comparison graal/com.oracle.jvmci.hotspot.amd64/src/com/oracle/jvmci/hotspot/amd64/AMD64HotSpotRegisterConfig.java @ 21674:e0b5d4fcd929

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moved HotSpotTargetDescription and [AMD64|SPARC]HotSpotRegisterConfig into JVMCI namespace (JBS:GRAAL-53)
author Doug Simon <doug.simon@oracle.com>
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
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 }