Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/asm/sparc/MemoryInstructionDecoder.java @ 3972:4f93f0d00802
7059019: G1: add G1 support to the SA
Summary: Extend the SA to recognize the G1CollectedHeap and implement any code that's needed by our serviceability tools (jmap, jinfo, jstack, etc.) that depend on the SA.
Reviewed-by: never, poonam, johnc
author | tonyp |
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date | Tue, 20 Sep 2011 09:59:59 -0400 |
parents | c18cbe5936b8 |
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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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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
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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 | |
29 abstract class MemoryInstructionDecoder extends InstructionDecoder { | |
30 final int op3; | |
31 final String name; | |
32 final int dataType; | |
33 | |
34 SPARCRegisterIndirectAddress newRegisterIndirectAddress(SPARCRegister rs1, SPARCRegister rs2) { | |
35 return new SPARCRegisterIndirectAddress(rs1, rs2); | |
36 } | |
37 | |
38 SPARCRegisterIndirectAddress newRegisterIndirectAddress(SPARCRegister rs1, int offset) { | |
39 return new SPARCRegisterIndirectAddress(rs1, offset); | |
40 } | |
41 | |
42 static void setAddressSpace(int instruction, SPARCRegisterIndirectAddress addr) { | |
43 int asi = (instruction & ASI_MASK) >>> ASI_START_BIT; | |
44 addr.setAddressSpace(asi); | |
45 } | |
46 | |
47 SPARCRegisterIndirectAddress getRegisterIndirectAddress(int instruction) { | |
48 SPARCRegister rs1 = SPARCRegisters.getRegister(getSourceRegister1(instruction)); | |
49 boolean iBit = isIBitSet(instruction); | |
50 SPARCRegisterIndirectAddress addr = null; | |
51 if (iBit) { | |
52 int simm13 = extractSignedIntFromNBits(instruction, 13); | |
53 addr = newRegisterIndirectAddress(rs1,simm13); | |
54 } else { | |
55 SPARCRegister rs2 = SPARCRegisters.getRegister(getSourceRegister2(instruction)); | |
56 addr = newRegisterIndirectAddress(rs1,rs2); | |
57 } | |
58 return addr; | |
59 } | |
60 | |
61 MemoryInstructionDecoder(int op3, String name, int dataType) { | |
62 this.op3 = op3; | |
63 this.name = name; | |
64 this.dataType = dataType; | |
65 } | |
66 | |
67 Instruction decode(int instruction, SPARCInstructionFactory factory) { | |
68 SPARCRegisterIndirectAddress addr = getRegisterIndirectAddress(instruction); | |
69 SPARCRegister rd = getDestination(instruction); | |
70 boolean isV9Okay = (factory instanceof SPARCV9InstructionFactory); | |
71 if ( (rd == null) || (! isV9Okay && rd.isV9Only()) ) | |
72 return factory.newIllegalInstruction(instruction); | |
73 | |
74 return decodeMemoryInstruction(instruction, addr, rd, factory); | |
75 } | |
76 | |
77 SPARCRegister getDestination(int instruction) { | |
78 int rdNum = getDestinationRegister(instruction); | |
79 SPARCRegister rd = RegisterDecoder.decode(dataType, rdNum); | |
80 return rd; | |
81 } | |
82 | |
83 abstract Instruction decodeMemoryInstruction(int instruction, | |
84 SPARCRegisterIndirectAddress addr, | |
85 SPARCRegister rd, SPARCInstructionFactory factory); | |
86 } |