Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/asm/sparc/BranchDecoder.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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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2002, 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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6941466: Oracle rebranding changes for Hotspot repositories
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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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c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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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 | |
| 29 abstract class BranchDecoder extends InstructionDecoder { | |
| 30 | |
| 31 // format 2 - condition code names. | |
| 32 // Appendix F - Opcodes and Condition Codes - Page 231 - Table F-7. | |
| 33 static final String integerConditionNames[] = { | |
| 34 "bn", "be", "ble", "bl", "bleu", "bcs", "bneg", "bvs", | |
| 35 "ba", "bne", "bg", "bge", "bgu", "bcc", "bpos", "bvc" | |
| 36 }; | |
| 37 | |
| 38 static final String integerAnnuledConditionNames[] = { | |
| 39 "bn,a", "be,a", "ble,a", "bl,a", "bleu,a", "bcs,a", "bneg,a", "bvs,a", | |
| 40 "ba,a", "bne,a", "bg,a", "bge,a", "bgu,a", "bcc,a", "bpos,a", "bvc,a" | |
| 41 }; | |
| 42 | |
| 43 // format 2 - condition code names. | |
| 44 // Appendix F - Opcodes and Condition Codes - Page 231 - Table F-7. | |
| 45 static final String floatConditionNames[] = { | |
| 46 "fbn", "fbne", "fblg", "fbul", "fbl", "fbug", "fbg", "fbu", | |
| 47 "fba", "fbe", "fbue", "fbge", "fbuge", "fble", "fbule", "fbo" | |
| 48 }; | |
| 49 | |
| 50 static final String floatAnnuledConditionNames[] = { | |
| 51 "fbn,a", "fbne,a", "fblg,a", "fbul,a", "fbl,a", "fbug,a", "fbg,a", "fbu,a", | |
| 52 "fba,a", "fbe,a", "fbue,a", "fbge,a", "fbuge,a", "fble,a", "fbule,a", "fbo,a" | |
| 53 }; | |
| 54 | |
| 55 static boolean getAnnuledBit(int instruction) { | |
| 56 return (instruction & ANNUL_MASK) != 0; | |
| 57 } | |
| 58 | |
| 59 Instruction decode(int instruction, SPARCInstructionFactory factory) { | |
| 60 boolean isAnnuled = getAnnuledBit(instruction); | |
| 61 int conditionCode = getConditionCode(instruction); | |
| 62 String conditionName = getConditionName(conditionCode, isAnnuled); | |
| 63 int offset = extractSignedIntFromNBits(instruction, 22); | |
| 64 // word align the offset by right shifting 2 bits | |
| 65 offset <<= 2; | |
| 66 PCRelativeAddress addr = new PCRelativeAddress(offset); | |
| 67 return factory.newBranchInstruction(conditionName, addr, isAnnuled, conditionCode); | |
| 68 } | |
| 69 | |
| 70 abstract String getConditionName(int conditionCode, boolean isAnnuled); | |
| 71 } |