Mercurial > hg > truffle
annotate graal/com.oracle.max.cri/src/com/oracle/max/cri/ci/CiCallingConvention.java @ 4266:e2499e6d8aa7
Merge
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Wed, 11 Jan 2012 16:31:46 +0100 |
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1 /* |
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2 * Copyright (c) 2009, 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.max.cri.ci; |
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24 |
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25 import static com.oracle.max.cri.ci.CiValueUtil.*; |
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26 |
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27 import com.oracle.max.cri.ri.*; |
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28 |
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29 |
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30 /** |
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31 * A calling convention describes the locations in which the arguments for a call are placed. |
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32 */ |
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33 public class CiCallingConvention { |
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34 |
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35 /** |
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36 * Constants denoting the type of a call for which a calling convention is |
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37 * {@linkplain RiRegisterConfig#getCallingConvention(Type, CiKind[], CiTarget, boolean) requested}. |
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38 */ |
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39 public enum Type { |
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40 /** |
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41 * A request for the outgoing argument locations at a call site to Java code. |
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42 */ |
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43 JavaCall(true), |
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44 |
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45 /** |
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46 * A request for the incoming argument locations. |
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47 */ |
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48 JavaCallee(false), |
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49 |
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50 /** |
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51 * A request for the outgoing argument locations at a call site to the runtime (which may be Java or native code). |
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52 */ |
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53 RuntimeCall(true), |
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54 |
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55 /** |
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56 * A request for the outgoing argument locations at a call site to |
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57 * external native code that complies with the platform ABI. |
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58 */ |
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59 NativeCall(true); |
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60 |
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61 /** |
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62 * Determines if this is a request for the outgoing argument locations at a call site. |
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63 */ |
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64 public final boolean out; |
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65 |
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66 public static final Type[] VALUES = values(); |
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67 |
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68 private Type(boolean out) { |
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69 this.out = out; |
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70 } |
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71 } |
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72 |
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73 /** |
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74 * The amount of stack space (in bytes) required for the stack-based arguments of the call. |
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75 */ |
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76 public final int stackSize; |
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77 |
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78 /** |
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79 * The locations in which the arguments are placed. This array ordered by argument index. |
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80 */ |
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81 public final CiValue[] locations; |
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82 |
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83 public CiCallingConvention(CiValue[] locations, int stackSize) { |
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84 this.locations = locations; |
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85 this.stackSize = stackSize; |
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86 assert verify(); |
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87 } |
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88 |
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89 @Override |
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90 public String toString() { |
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91 StringBuilder result = new StringBuilder(); |
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92 result.append("CallingConvention["); |
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93 for (CiValue op : locations) { |
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94 result.append(op.toString()).append(" "); |
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95 } |
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96 result.append("]"); |
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97 return result.toString(); |
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98 } |
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99 |
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100 private boolean verify() { |
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101 for (int i = 0; i < locations.length; i++) { |
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102 CiValue location = locations[i]; |
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103 assert isStackSlot(location) || isRegister(location); |
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104 } |
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105 return true; |
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106 } |
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107 } |