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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/HotSpotRuntimeCallTarget.java @ 9352:d4684b468e93

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made NewInstanceStub a RuntimeStub that directly calls the C runtime (GRAAL-81)
author Doug Simon <doug.simon@oracle.com>
date Sat, 27 Apr 2013 00:32:22 +0200
parents 1342574c4f7d
children 4e260c2ced0e
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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
2a0c9f20baa1 consolidated framework for runtime and stub calls and moved declaration of descriptors for such calls to the source file in which they are used
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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;
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24
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25 import java.util.*;
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27 import com.oracle.graal.api.code.*;
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28 import com.oracle.graal.api.meta.*;
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29 import com.oracle.graal.compiler.target.*;
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30 import com.oracle.graal.hotspot.bridge.*;
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31 import com.oracle.graal.hotspot.stubs.*;
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32
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33 /**
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34 * The details required to link a HotSpot runtime or stub call.
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35 */
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36 public class HotSpotRuntimeCallTarget implements RuntimeCallTarget, InvokeTarget {
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37
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38 /**
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39 * The descriptor of the stub. This is for informational purposes only.
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40 */
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41 public final Descriptor descriptor;
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42
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43 /**
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44 * The entry point address of the stub.
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45 */
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46 private long address;
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47
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48 /**
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49 * Non-null (eventually) iff this is a call to a compiled {@linkplain Stub stub}.
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50 */
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51 private Stub stub;
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52
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53 /**
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54 * Where the stub gets its arguments and where it places its result.
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55 */
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56 private CallingConvention cc;
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57
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58 private final CompilerToVM vm;
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59
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60 public HotSpotRuntimeCallTarget(Descriptor descriptor, long address, CallingConvention cc, CompilerToVM vm) {
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61 this.address = address;
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62 this.descriptor = descriptor;
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63 this.cc = cc;
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64 this.vm = vm;
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65 }
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66
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67 @Override
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68 public String toString() {
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69 return (stub == null ? descriptor.toString() : MetaUtil.format("%h.%n", stub.getMethod())) + "@0x" + Long.toHexString(address) + ":" + cc;
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70 }
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71
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72 public CallingConvention getCallingConvention() {
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73 return cc;
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74 }
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75
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76 public long getMaxCallTargetOffset() {
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77 return vm.getMaxCallTargetOffset(address);
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78 }
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79
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80 public Descriptor getDescriptor() {
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81 return descriptor;
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82 }
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83
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84 public void setStub(Stub stub) {
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85 assert address == 0L : "cannot set stub for linkage that already has an address: " + this;
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86 this.stub = stub;
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87 }
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88
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89 public void finalizeAddress(Backend backend) {
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90 if (address == 0) {
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91 assert stub != null : "linkage without an address must be a stub";
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92 InstalledCode code = stub.getCode(backend);
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93
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94 AllocatableValue[] argumentLocations = new AllocatableValue[cc.getArgumentCount()];
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95 for (int i = 0; i < argumentLocations.length; i++) {
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96 argumentLocations[i] = cc.getArgument(i);
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97 }
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98
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99 Set<Register> definedRegisters = stub.getDefinedRegisters();
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100 AllocatableValue[] temporaryLocations = new AllocatableValue[definedRegisters.size()];
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101 int i = 0;
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102 for (Register reg : definedRegisters) {
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103 temporaryLocations[i++] = reg.asValue();
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104 }
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105 // Update calling convention with temporaries
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106 cc = new CallingConvention(temporaryLocations, cc.getStackSize(), cc.getReturn(), argumentLocations);
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107 address = code.getStart();
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108 }
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109 }
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110
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111 @Override
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112 public boolean preservesRegisters() {
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113 assert address != 0;
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114 return true;
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115 }
9352
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116
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117 /**
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118 * Determines if this is a link to a C/C++ function in the HotSpot runtime.
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119 */
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120 public boolean isCRuntimeCall() {
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121 HotSpotVMConfig config = HotSpotGraalRuntime.graalRuntime().getConfig();
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parents: 9296
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122 return address == config.newArrayAddress || address == config.newInstanceAddress;
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parents: 9296
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123 }
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2a0c9f20baa1 consolidated framework for runtime and stub calls and moved declaration of descriptors for such calls to the source file in which they are used
Doug Simon <doug.simon@oracle.com>
parents:
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124 }