Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/asm/sparc/SPARCDisassembler.java @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
|---|---|
| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | a61af66fc99e |
| children |
| rev | line source |
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| 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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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 import java.io.*; | |
| 29 import java.util.*; | |
| 30 | |
| 31 public abstract class SPARCDisassembler extends Disassembler | |
| 32 implements /* imports */ SPARCOpcodes, RTLDataTypes, RTLOperations { | |
| 33 | |
| 34 // instruction cache - Map<Integer, Instruction>. | |
| 35 protected static Map instructionCache = new HashMap(); | |
| 36 protected final SPARCInstructionFactory factory; | |
| 37 | |
| 38 public SPARCDisassembler(long startPc, byte[] code, SPARCInstructionFactory factory) { | |
| 39 super(startPc, code); | |
| 40 this.factory = factory; | |
| 41 } | |
| 42 | |
| 43 protected static InstructionDecoder illegalDecoder = new IllegalInstructionDecoder(); | |
| 44 protected static InstructionDecoder callDecoder = new CallDecoder(); | |
| 45 | |
| 46 // direct call instruction | |
| 47 protected Instruction decodeFormat1Instruction(int instruction) { | |
| 48 return callDecoder.decode(instruction, factory); | |
| 49 } | |
| 50 | |
| 51 protected abstract InstructionDecoder getFormat2Decoder(int op2); | |
| 52 | |
| 53 protected Instruction decodeFormat2Instruction(int instruction) { | |
| 54 int op2 = (instruction & OP_2_MASK) >>> OP_2_START_BIT; | |
| 55 InstructionDecoder decoder = getFormat2Decoder(op2); | |
| 56 return decoder.decode(instruction, factory); | |
| 57 } | |
| 58 | |
| 59 // "op3" - used in format 3 & 3A instructions - 6 bits width | |
| 60 | |
| 61 protected static int getOp3(int instruction) { | |
| 62 return (instruction & OP_3_MASK) >>> OP_3_START_BIT; | |
| 63 } | |
| 64 | |
| 65 // op3 opcodes is broken up into column and row. MSB 2 bits form column. | |
| 66 // LSB 4 bits form row number. | |
| 67 | |
| 68 protected static int getOp3Row(int op3) { | |
| 69 return op3 & 0xF; | |
| 70 } | |
| 71 | |
| 72 protected static int getOp3Column(int op3) { | |
| 73 return (op3 >>> 4) & 0x3; | |
| 74 } | |
| 75 | |
| 76 protected abstract InstructionDecoder getFormat3Decoder(int row, int column); | |
| 77 | |
| 78 // memory instructions | |
| 79 protected Instruction decodeFormat3Instruction(int instruction) { | |
| 80 int op3 = getOp3(instruction); | |
| 81 int row = getOp3Row(op3); | |
| 82 int column = getOp3Column(op3); | |
| 83 return getFormat3Decoder(row, column).decode(instruction, factory); | |
| 84 } | |
| 85 | |
| 86 protected abstract InstructionDecoder getFormat3ADecoder(int row, int column); | |
| 87 | |
| 88 // arithmetic, logic, shift and the rest | |
| 89 protected Instruction decodeFormat3AInstruction(int instruction) { | |
| 90 int op3 = getOp3(instruction); | |
| 91 int row = getOp3Row(op3); | |
| 92 int column = getOp3Column(op3); | |
| 93 return getFormat3ADecoder(row, column).decode(instruction, factory); | |
| 94 } | |
| 95 | |
| 96 public void decode(InstructionVisitor visitor) { | |
| 97 visitor.prologue(); | |
| 98 try { | |
| 99 DataInputStream dis = new DataInputStream(new ByteArrayInputStream(code)); | |
| 100 int instruction = -1; | |
| 101 int format = -1; | |
| 102 Instruction instr = null; | |
| 103 int len = 0; | |
| 104 | |
| 105 while (len < code.length) { | |
| 106 instr = null; | |
| 107 instruction = dis.readInt(); | |
| 108 // check whether we have this in cache. | |
| 109 instr = (Instruction) instructionCache.get(new Integer(instruction)); | |
| 110 if (instr == null) { | |
| 111 format = (instruction & FORMAT_MASK) >>> FORMAT_START_BIT; | |
| 112 | |
| 113 switch (format) { | |
| 114 case FORMAT_2: // 0 | |
| 115 instr = decodeFormat2Instruction(instruction); | |
| 116 break; | |
| 117 | |
| 118 case FORMAT_1: // 1 | |
| 119 instr = decodeFormat1Instruction(instruction); | |
| 120 break; | |
| 121 | |
| 122 case FORMAT_3A: // 2 | |
| 123 instr = decodeFormat3AInstruction(instruction); | |
| 124 break; | |
| 125 | |
| 126 case FORMAT_3: // 3 | |
| 127 instr = decodeFormat3Instruction(instruction); | |
| 128 break; | |
| 129 } | |
| 130 | |
| 131 // add the new instruction to cache. | |
| 132 instructionCache.put(new Integer(instruction), instr); | |
| 133 } | |
| 134 | |
| 135 visitor.visit(startPc + len, instr); | |
| 136 len += 4; | |
| 137 } | |
| 138 } catch (IOException ioExp) { | |
| 139 // ignore, can't happen | |
| 140 } finally { | |
| 141 visitor.epilogue(); | |
| 142 } | |
| 143 } | |
| 144 } |