Mercurial > hg > graal-jvmci-8
annotate graal/Compiler/src/com/sun/c1x/ir/NativeCall.java @ 2507:9ec15d6914ca
Pull over of compiler from maxine repository.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 11:43:22 +0200 |
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1 /* |
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2 * Copyright (c) 2010, 2011, 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.sun.c1x.ir; |
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24 |
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25 import com.sun.c1x.debug.*; |
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26 import com.sun.c1x.value.*; |
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27 import com.sun.cri.ri.*; |
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28 |
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29 /** |
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30 * Represents a call to a native function from within a native method stub. |
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31 * |
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32 * @author Doug Simon |
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33 */ |
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34 public final class NativeCall extends StateSplit { |
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35 |
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36 /** |
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37 * The instruction that produces the native function address for this native call. |
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38 */ |
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39 private Value address; |
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40 |
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41 /** |
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42 * The native method for this native call. |
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43 */ |
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44 public final RiMethod nativeMethod; |
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45 |
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46 /** |
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47 * The signature of the call which is derived from {@link #nativeMethod} but is not |
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48 * the same as its {@linkplain RiMethod#signature() signature}. |
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49 */ |
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50 public final RiSignature signature; |
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51 |
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52 /** |
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53 * The list of instructions that produce the arguments for this native call. |
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54 */ |
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55 public final Value[] arguments; |
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56 |
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57 /** |
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58 * Constructs a new NativeCall instruction. |
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59 * |
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60 * @param nativeMethod TODO |
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61 * @param signature TODO |
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62 * @param address TODO |
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63 * @param args the list of instructions producing arguments to the invocation |
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64 * @param stateBefore the state before executing the invocation |
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65 */ |
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66 public NativeCall(RiMethod nativeMethod, RiSignature signature, Value address, Value[] args, FrameState stateBefore) { |
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67 super(signature.returnKind().stackKind(), stateBefore); |
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68 this.address = address; |
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69 this.nativeMethod = nativeMethod; |
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70 this.arguments = args; |
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71 this.signature = signature; |
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72 assert nativeMethod.jniSymbol() != null; |
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73 } |
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74 |
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75 /** |
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76 * The native function may call back into the VM which may call method that can trap. |
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77 */ |
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78 @Override |
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79 public boolean canTrap() { |
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80 return true; |
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81 } |
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82 |
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83 /** |
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84 * Gets the instruction that produces the native function address for this native call. |
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85 * @return the instruction |
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86 */ |
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87 public Value address() { |
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88 return address; |
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89 } |
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90 |
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91 @Override |
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92 public void inputValuesDo(ValueClosure closure) { |
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93 for (int i = 0; i < arguments.length; i++) { |
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94 Value arg = arguments[i]; |
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95 if (arg != null) { |
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96 arguments[i] = closure.apply(arg); |
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97 assert arguments[i] != null; |
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98 } |
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99 } |
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100 address = closure.apply(address); |
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101 } |
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102 |
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103 @Override |
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104 public void accept(ValueVisitor v) { |
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105 v.visitNativeCall(this); |
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106 } |
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107 |
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108 @Override |
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109 public void print(LogStream out) { |
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110 out.print(nativeMethod.jniSymbol()).print('('); |
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111 for (int i = 0; i < arguments.length; i++) { |
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112 if (i > 0) { |
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113 out.print(", "); |
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114 } |
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115 out.print(arguments[i]); |
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116 } |
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117 out.print(')'); |
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118 } |
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119 } |