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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/target/amd64/HotSpotAMD64Backend.java @ 6470:b1010f7bc0bf

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expanded CallingConvention API class to also include the location of the value (if any) returned by a call
author Doug Simon <doug.simon@oracle.com>
date Mon, 01 Oct 2012 21:37:20 +0200
parents b3f5dc099f9d
children 62878ae057a5
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1 /*
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2 * Copyright (c) 2012, 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 com.oracle.graal.hotspot.target.amd64;
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24
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25 import static com.oracle.graal.api.code.CallingConvention.Type.*;
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26 import static com.oracle.graal.api.code.ValueUtil.*;
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27 import static com.oracle.max.asm.target.amd64.AMD64.*;
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28
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29 import java.lang.reflect.*;
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30 import java.util.*;
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31
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32 import com.oracle.graal.api.code.*;
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33 import com.oracle.graal.api.meta.*;
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34 import com.oracle.graal.compiler.*;
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35 import com.oracle.graal.compiler.gen.*;
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36 import com.oracle.graal.compiler.target.*;
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37 import com.oracle.graal.compiler.target.amd64.*;
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38 import com.oracle.graal.graph.*;
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39 import com.oracle.graal.hotspot.*;
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40 import com.oracle.graal.hotspot.bridge.*;
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41 import com.oracle.graal.hotspot.counters.*;
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42 import com.oracle.graal.hotspot.meta.*;
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43 import com.oracle.graal.hotspot.nodes.*;
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44 import com.oracle.graal.lir.*;
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45 import com.oracle.graal.lir.amd64.*;
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46 import com.oracle.graal.lir.asm.*;
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47 import com.oracle.graal.nodes.*;
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48 import com.oracle.graal.nodes.java.*;
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49 import com.oracle.max.asm.*;
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50 import com.oracle.max.asm.target.amd64.*;
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51 import com.oracle.max.asm.target.amd64.AMD64Assembler.ConditionFlag;
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52
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53 /**
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54 * HotSpot AMD64 specific backend.
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55 */
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56 public class HotSpotAMD64Backend extends Backend {
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57
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58 public HotSpotAMD64Backend(CodeCacheProvider runtime, TargetDescription target) {
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59 super(runtime, target);
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60 }
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61
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62 @Override
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63 public LIRGenerator newLIRGenerator(Graph graph, FrameMap frameMap, ResolvedJavaMethod method, LIR lir) {
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64 return new HotSpotAMD64LIRGenerator(graph, runtime, target, frameMap, method, lir);
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65 }
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66
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67 static final class HotSpotAMD64LIRGenerator extends AMD64LIRGenerator {
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68
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69 private HotSpotAMD64LIRGenerator(Graph graph, CodeCacheProvider runtime, TargetDescription target, FrameMap frameMap, ResolvedJavaMethod method, LIR lir) {
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70 super(graph, runtime, target, frameMap, method, lir);
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71 }
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72
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73 @Override
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74 public void visitSafepointNode(SafepointNode i) {
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75 LIRFrameState info = state();
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76 append(new AMD64SafepointOp(info, ((HotSpotRuntime) runtime).config));
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77 }
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78
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79 @Override
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80 public void visitBreakpointNode(BreakpointNode i) {
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81 Kind[] sig = new Kind[i.arguments.size()];
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82 int pos = 0;
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83 for (ValueNode arg : i.arguments) {
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84 sig[pos++] = arg.kind();
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85 }
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86
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87 CallingConvention cc = frameMap.registerConfig.getCallingConvention(CallingConvention.Type.JavaCall, Kind.Void, sig, target(), false);
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88 List<Value> argList = visitInvokeArguments(cc, i.arguments);
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89 Value[] parameters = argList.toArray(new Value[argList.size()]);
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90 append(new AMD64BreakpointOp(parameters));
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91 }
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92
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93 @Override
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94 public void visitExceptionObject(ExceptionObjectNode x) {
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95 HotSpotVMConfig config = ((HotSpotRuntime) runtime).config;
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96 RegisterValue thread = config.threadRegister.asValue();
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97 Address exceptionAddress = new Address(Kind.Object, thread, config.threadExceptionOopOffset);
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98 Address pcAddress = new Address(Kind.Long, thread, config.threadExceptionPcOffset);
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99 Value exception = emitLoad(exceptionAddress, false);
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100 emitStore(exceptionAddress, Constant.NULL_OBJECT, false);
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101 emitStore(pcAddress, Constant.LONG_0, false);
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102 setResult(x, exception);
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103 }
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104
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105 @Override
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106 protected void emitPrologue() {
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107 super.emitPrologue();
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108 MethodEntryCounters.emitCounter(this, method);
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109 }
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110
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111 @Override
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112 protected void emitDirectCall(DirectCallTargetNode callTarget, Value result, Value[] parameters, LIRFrameState callState) {
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113 append(new AMD64DirectCallOp(callTarget.target(), result, parameters, callState, ((HotSpotDirectCallTargetNode) callTarget).invokeKind(), lir));
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114 }
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parents: 5823
diff changeset
115
6409
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diff changeset
116 @Override
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diff changeset
117 protected void emitIndirectCall(IndirectCallTargetNode callTarget, Value result, Value[] parameters, LIRFrameState callState) {
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diff changeset
118 Value methodOop = AMD64.rbx.asValue();
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diff changeset
119 emitMove(operand(((HotSpotIndirectCallTargetNode) callTarget).methodOop()), methodOop);
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diff changeset
120 Value targetAddress = AMD64.rax.asValue();
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parents: 6364
diff changeset
121 emitMove(operand(callTarget.computedAddress()), targetAddress);
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diff changeset
122 append(new AMD64IndirectCallOp(callTarget.target(), result, parameters, methodOop, targetAddress, callState));
5798
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parents: 5775
diff changeset
123 }
2585af1e26ac implemented non-XIR lowering of invokes (todo: inline virtual dispatch and null checking of receivers)
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parents: 5775
diff changeset
124 }
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parents: 5775
diff changeset
125
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diff changeset
126 class HotSpotFrameContext implements FrameContext {
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127
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diff changeset
128 @Override
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129 public void enter(TargetMethodAssembler tasm) {
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130 FrameMap frameMap = tasm.frameMap;
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diff changeset
131 int frameSize = frameMap.frameSize();
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132
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133 AMD64MacroAssembler asm = (AMD64MacroAssembler) tasm.asm;
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134 emitStackOverflowCheck(tasm, false);
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135 asm.push(rbp);
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136 asm.movq(rbp, rsp);
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137 asm.decrementq(rsp, frameSize - 8); // account for the push of RBP above
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diff changeset
138 if (GraalOptions.ZapStackOnMethodEntry) {
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139 final int intSize = 4;
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140 for (int i = 0; i < frameSize / intSize; ++i) {
5547
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parents: 5541
diff changeset
141 asm.movl(new Address(Kind.Int, rsp.asValue(), i * intSize), 0xC1C1C1C1);
5233
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142 }
5251
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143 }
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diff changeset
144 CalleeSaveLayout csl = frameMap.registerConfig.getCalleeSaveLayout();
5251
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parents: 5242
diff changeset
145 if (csl != null && csl.size != 0) {
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diff changeset
146 int frameToCSA = frameMap.offsetToCalleeSaveArea();
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parents: 5242
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147 assert frameToCSA >= 0;
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148 asm.save(csl, frameToCSA);
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149 }
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parents:
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150 }
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diff changeset
151
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parents:
diff changeset
152 @Override
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diff changeset
153 public void leave(TargetMethodAssembler tasm) {
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diff changeset
154 int frameSize = tasm.frameMap.frameSize();
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parents:
diff changeset
155 AMD64MacroAssembler asm = (AMD64MacroAssembler) tasm.asm;
5547
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parents: 5541
diff changeset
156 CalleeSaveLayout csl = tasm.frameMap.registerConfig.getCalleeSaveLayout();
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parents: 5541
diff changeset
157 RegisterConfig regConfig = tasm.frameMap.registerConfig;
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158
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diff changeset
159 if (csl != null && csl.size != 0) {
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diff changeset
160 tasm.targetMethod.setRegisterRestoreEpilogueOffset(asm.codeBuffer.position());
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161 // saved all registers, restore all registers
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diff changeset
162 int frameToCSA = tasm.frameMap.offsetToCalleeSaveArea();
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diff changeset
163 asm.restore(csl, frameToCSA);
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164 }
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diff changeset
165
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diff changeset
166 asm.incrementq(rsp, frameSize - 8); // account for the pop of RBP below
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diff changeset
167 asm.pop(rbp);
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168
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parents:
diff changeset
169 if (GraalOptions.GenSafepoints) {
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diff changeset
170 HotSpotVMConfig config = ((HotSpotRuntime) runtime).config;
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171
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parents:
diff changeset
172 // If at the return point, then the frame has already been popped
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diff changeset
173 // so deoptimization cannot be performed here. The HotSpot runtime
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174 // detects this case - see the definition of frame::should_be_deoptimized()
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175
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diff changeset
176 Register scratch = regConfig.getScratchRegister();
5233
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diff changeset
177 if (config.isPollingPageFar) {
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parents:
diff changeset
178 asm.movq(scratch, config.safepointPollingAddress);
6462
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parents: 6413
diff changeset
179 tasm.recordMark(Marks.MARK_POLL_RETURN_FAR);
5547
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diff changeset
180 asm.movq(scratch, new Address(tasm.target.wordKind, scratch.asValue()));
5233
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diff changeset
181 } else {
6462
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parents: 6413
diff changeset
182 tasm.recordMark(Marks.MARK_POLL_RETURN_NEAR);
5547
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diff changeset
183 asm.movq(scratch, new Address(tasm.target.wordKind, rip.asValue()));
5233
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diff changeset
184 }
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parents:
diff changeset
185 }
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parents:
diff changeset
186 }
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parents:
diff changeset
187 }
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parents:
diff changeset
188
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parents:
diff changeset
189 @Override
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diff changeset
190 public TargetMethodAssembler newAssembler(FrameMap frameMap, LIR lir) {
5251
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diff changeset
191 // Omit the frame if the method:
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192 // - has no spill slots or other slots allocated during register allocation
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193 // - has no callee-saved registers
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194 // - has no incoming arguments passed on the stack
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195 // - has no instructions with debug info
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parents: 5242
diff changeset
196 boolean canOmitFrame =
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diff changeset
197 frameMap.frameSize() == frameMap.initialFrameSize &&
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diff changeset
198 frameMap.registerConfig.getCalleeSaveLayout().registers.length == 0 &&
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diff changeset
199 !lir.hasArgInCallerFrame() &&
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diff changeset
200 !lir.hasDebugInfo();
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201
5233
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diff changeset
202 AbstractAssembler masm = new AMD64MacroAssembler(target, frameMap.registerConfig);
5251
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diff changeset
203 HotSpotFrameContext frameContext = canOmitFrame ? null : new HotSpotFrameContext();
5273
7689999f0ea6 improved disassembly comments for out-of-line stubs
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parents: 5259
diff changeset
204 TargetMethodAssembler tasm = new TargetMethodAssembler(target, runtime, frameMap, masm, frameContext, lir.stubs);
5233
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diff changeset
205 tasm.setFrameSize(frameMap.frameSize());
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diff changeset
206 tasm.targetMethod.setCustomStackAreaOffset(frameMap.offsetToCustomArea());
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diff changeset
207 return tasm;
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diff changeset
208 }
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diff changeset
209
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diff changeset
210 @Override
5541
b4c406861c33 More renamings to drop Ri* prefix completely. Deleted graph.BitMap class and replaced with java.util.BitSet.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 5540
diff changeset
211 public void emitCode(TargetMethodAssembler tasm, ResolvedJavaMethod method, LIR lir) {
5233
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diff changeset
212 AMD64MacroAssembler asm = (AMD64MacroAssembler) tasm.asm;
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parents:
diff changeset
213 FrameMap frameMap = tasm.frameMap;
5547
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parents: 5541
diff changeset
214 RegisterConfig regConfig = frameMap.registerConfig;
5233
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parents:
diff changeset
215 HotSpotVMConfig config = ((HotSpotRuntime) runtime).config;
efbb1e33e2f3 removed XIR prologue and epilogues - architecture and runtime specific subclass of Backend is now used instead
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parents:
diff changeset
216 Label unverifiedStub = new Label();
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parents:
diff changeset
217
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parents:
diff changeset
218 // Emit the prefix
6462
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parents: 6413
diff changeset
219 tasm.recordMark(Marks.MARK_OSR_ENTRY);
5233
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parents:
diff changeset
220
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parents:
diff changeset
221 boolean isStatic = Modifier.isStatic(method.accessFlags());
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parents:
diff changeset
222 if (!isStatic) {
6462
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223 tasm.recordMark(Marks.MARK_UNVERIFIED_ENTRY);
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parents: 6462
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224 CallingConvention cc = regConfig.getCallingConvention(JavaCallee, Kind.Void, new Kind[] {Kind.Object}, target, false);
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parents: 5541
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225 Register inlineCacheKlass = rax; // see definition of IC_Klass in c1_LIRAssembler_x86.cpp
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226 Register receiver = asRegister(cc.getArgument(0));
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227 Address src = new Address(target.wordKind, receiver.asValue(), config.hubOffset);
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228
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Doug Simon <doug.simon@oracle.com>
parents: 5233
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229 asm.cmpq(inlineCacheKlass, src);
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230 asm.jcc(ConditionFlag.notEqual, unverifiedStub);
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231 }
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parents:
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232
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233 asm.align(config.codeEntryAlignment);
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parents: 6413
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234 tasm.recordMark(Marks.MARK_VERIFIED_ENTRY);
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parents:
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235
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236 // Emit code for the LIR
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237 lir.emitCode(tasm);
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238
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Doug Simon <doug.simon@oracle.com>
parents: 5242
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239 boolean frameOmitted = tasm.frameContext == null;
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240 if (!frameOmitted) {
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parents: 6413
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241 tasm.recordMark(Marks.MARK_EXCEPTION_HANDLER_ENTRY);
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Doug Simon <doug.simon@oracle.com>
parents: 5242
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242 AMD64Call.directCall(tasm, asm, config.handleExceptionStub, null);
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Doug Simon <doug.simon@oracle.com>
parents: 5242
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243 AMD64Call.shouldNotReachHere(tasm, asm);
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244
6462
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parents: 6413
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245 tasm.recordMark(Marks.MARK_DEOPT_HANDLER_ENTRY);
5251
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parents: 5242
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246 AMD64Call.directCall(tasm, asm, config.handleDeoptStub, null);
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parents: 5242
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247 AMD64Call.shouldNotReachHere(tasm, asm);
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parents: 5242
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248 } else {
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249 // No need to emit the stubs for entries back into the method since
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parents: 5242
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250 // it has no calls that can cause such "return" entries
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Doug Simon <doug.simon@oracle.com>
parents: 5242
diff changeset
251 assert !frameMap.accessesCallerFrame();
467de393651a optimization: frame prologue & epilogue ommitted for methods with no spills, no callee-saved registers, no incoming stack args and no debug info
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parents: 5242
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252 }
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parents:
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253
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parents:
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254 if (!isStatic) {
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255 asm.bind(unverifiedStub);
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parents:
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256 AMD64Call.directJmp(tasm, asm, config.inlineCacheMissStub);
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parents:
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257 }
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parents:
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258
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Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
259 for (int i = 0; i < GraalOptions.MethodEndBreakpointGuards; ++i) {
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parents:
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260 asm.int3();
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parents:
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261 }
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Doug Simon <doug.simon@oracle.com>
parents:
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262 }
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Doug Simon <doug.simon@oracle.com>
parents:
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263 }