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annotate graal/com.oracle.max.cri/src/com/oracle/max/cri/ci/CiCallingConvention.java @ 5507:dc71b06d09f8

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Moving classes from cri.ri to api.meta.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Thu, 07 Jun 2012 18:24:06 +0200
parents 56860d3f9f39
children
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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.graal.api.meta.*;
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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 CiRegisterConfig#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 RiValue[] locations;
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82
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83 public CiCallingConvention(RiValue[] 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 (RiValue 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 RiValue 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 }