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annotate graal/GraalCompiler/src/com/sun/c1x/globalstub/GlobalStub.java @ 2509:16b9a8b5ad39

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Renamings Runtime=>GraalRuntime and Compiler=>GraalCompiler
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Wed, 27 Apr 2011 11:50:44 +0200
parents graal/Compiler/src/com/sun/c1x/globalstub/GlobalStub.java@9ec15d6914ca
children
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1 /*
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2 * Copyright (c) 2009, 2010, 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.globalstub;
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24
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25 import static com.sun.cri.ci.CiKind.*;
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26
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27 import com.sun.cri.ci.*;
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28
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29 /**
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30 * A global stub is a shared routine that performs an operation on behalf of compiled code.
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31 * Typically the routine is too large to inline, is infrequent, or requires runtime support.
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32 * Global stubs are called with a callee-save convention; the global stub must save any
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33 * registers it may destroy and then restore them upon return. This allows the register
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34 * allocator to ignore calls to global stubs. Parameters to global stubs are
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35 * passed on the stack in order to preserve registers for the rest of the code.
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36 *
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37 * @author Thomas Wuerthinger
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38 * @author Ben L. Titzer
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39 */
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40 public class GlobalStub {
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41
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42 public enum Id {
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43
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44 fneg(Float, Float),
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45 dneg(Double, Double),
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46 f2i(Int, Float),
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47 f2l(Long, Float),
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48 d2i(Int, Double),
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49 d2l(Long, Double);
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50
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51 public final CiKind resultKind;
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52 public final CiKind[] arguments;
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53
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54 private Id(CiKind resultKind, CiKind... args) {
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55 this.resultKind = resultKind;
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56 this.arguments = args;
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57 }
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58 }
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59
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60 public final Id id;
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61 public final CiKind resultKind;
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62 public final Object stubObject;
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63 public final int argsSize;
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64 public final int[] argOffsets;
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65 public final int resultOffset;
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66
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67 public GlobalStub(Id id, CiKind resultKind, Object stubObject, int argsSize, int[] argOffsets, int resultOffset) {
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68 this.id = id;
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69 this.resultKind = resultKind;
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70 this.stubObject = stubObject;
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71 this.argsSize = argsSize;
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72 this.argOffsets = argOffsets;
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73 this.resultOffset = resultOffset;
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74 }
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75
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76 }