Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/asm/sparc/SPARCArgument.java @ 1913:3b2dea75431e
6984311: JSR 292 needs optional bootstrap method parameters
Summary: Allow CONSTANT_InvokeDynamic nodes to have any number of extra operands.
Reviewed-by: twisti
| author | jrose |
|---|---|
| date | Sat, 30 Oct 2010 13:08:23 -0700 |
| parents | c18cbe5936b8 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, 2001, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.asm.sparc; | |
| 26 | |
| 27 import sun.jvm.hotspot.asm.*; | |
| 28 import sun.jvm.hotspot.utilities.*; | |
| 29 | |
| 30 /** SPARCArgument is an abstraction used to represent an outgoing | |
| 31 actual argument or an incoming formal parameter, whether it | |
| 32 resides in memory or in a register, in a manner consistent with | |
| 33 the SPARC Application Binary Interface, or ABI. This is often | |
| 34 referred to as the native or C calling convention. */ | |
| 35 | |
| 36 public class SPARCArgument { | |
| 37 private int number; | |
| 38 private boolean isIn; | |
| 39 | |
| 40 // FIXME: add 64-bit stuff here (support for FP registers) | |
| 41 | |
| 42 /** Only 6 registers may contain integer parameters */ | |
| 43 public static final int NUM_REGISTER_PARAMETERS = 6; | |
| 44 | |
| 45 public SPARCArgument(int number, boolean isIn) { | |
| 46 this.number = number; | |
| 47 this.isIn = isIn; | |
| 48 } | |
| 49 | |
| 50 int getNumber() { return number; } | |
| 51 boolean getIsIn() { return isIn; } | |
| 52 boolean getIsOut() { return !getIsIn(); } | |
| 53 | |
| 54 public SPARCArgument getSuccessor() { return new SPARCArgument(getNumber() + 1, getIsIn()); } | |
| 55 public SPARCArgument asIn() { return new SPARCArgument(getNumber(), true); } | |
| 56 public SPARCArgument asOut() { return new SPARCArgument(getNumber(), false); } | |
| 57 | |
| 58 /** Locating register-based arguments */ | |
| 59 public boolean isRegister() { return number < NUM_REGISTER_PARAMETERS; } | |
| 60 | |
| 61 public SPARCRegister asRegister() { | |
| 62 if (Assert.ASSERTS_ENABLED) { | |
| 63 Assert.that(isRegister(), "must be a register argument"); | |
| 64 } | |
| 65 return new SPARCRegister(getIsIn() ? SPARCRegisterType.IN : SPARCRegisterType.OUT, getNumber()); | |
| 66 } | |
| 67 | |
| 68 // locating memory-based arguments (FIXME: elided for now, will | |
| 69 // necessitate creating new SPARCAddress class) | |
| 70 // public SPARCAddress asAddress() { | |
| 71 // if (Assert.ASSERTS_ENABLED) { | |
| 72 // Assert.that(!isRegister(), "must be a memory argument"); | |
| 73 // } | |
| 74 // return addressInFrame(); | |
| 75 // } | |
| 76 // | |
| 77 // /** When applied to a register-based argument, give the corresponding address | |
| 78 // into the 6-word area "into which callee may store register arguments" | |
| 79 // (This is a different place than the corresponding register-save area location.) */ | |
| 80 // public SPARCAddress addressInFrame() const { | |
| 81 // return SPARCAddress( is_in() ? Address::extra_in_argument | |
| 82 // : Address::extra_out_argument, | |
| 83 // _number ); | |
| 84 // } | |
| 85 } |