Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/asm/sparc/V9ReadDecoder.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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c18cbe5936b8
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 class V9ReadDecoder extends InstructionDecoder | |
| 30 implements V9InstructionDecoder { | |
| 31 Instruction decode(int instruction, SPARCInstructionFactory factory) { | |
| 32 SPARCV9InstructionFactory v9factory = (SPARCV9InstructionFactory) factory; | |
| 33 Instruction instr = null; | |
| 34 int specialRegNum = getSourceRegister1(instruction); | |
| 35 | |
| 36 // rs1 values 1, 7-14 are reserved - see page 214, A.44 Read State Register. | |
| 37 if (specialRegNum == 1 || (specialRegNum > 6 && specialRegNum < 15)) { | |
| 38 instr = v9factory.newIllegalInstruction(instruction); | |
| 39 } else { | |
| 40 int rdNum = getDestinationRegister(instruction); | |
| 41 if (specialRegNum == 15) { | |
| 42 // may be stbar, member or illegal | |
| 43 if (rdNum == 0) { | |
| 44 boolean iBit = isIBitSet(instruction); | |
| 45 if (iBit) { | |
| 46 instr = v9factory.newV9MembarInstruction((instruction & MMASK_MASK) >>> MMASK_START_BIT, | |
| 47 (instruction & CMASK_MASK) >>> CMASK_START_BIT); | |
| 48 } else { | |
| 49 instr = v9factory.newStbarInstruction(); | |
| 50 } | |
| 51 } else { // rd != 0 && rs1 == 15 | |
| 52 instr = v9factory.newIllegalInstruction(instruction); | |
| 53 } | |
| 54 } else { | |
| 55 int asrRegNum = -1; | |
| 56 if (specialRegNum > 15){ | |
| 57 asrRegNum = specialRegNum; | |
| 58 specialRegNum = SPARCV9SpecialRegisters.ASR; | |
| 59 } | |
| 60 SPARCRegister rd = SPARCRegisters.getRegister(rdNum); | |
| 61 instr = v9factory.newV9ReadInstruction(specialRegNum, asrRegNum, rd); | |
| 62 } | |
| 63 } | |
| 64 return instr; | |
| 65 } | |
| 66 } |