Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/debugger/x86/X86ThreadContext.java @ 6848:8e47bac5643a
7054512: Compress class pointers after perm gen removal
Summary: support of compress class pointers in the compilers.
Reviewed-by: kvn, twisti
| author | roland |
|---|---|
| date | Tue, 09 Oct 2012 10:11:38 +0200 |
| parents | fac3dd92ebaf |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 6763 | 2 * Copyright (c) 2000, 2012, 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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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.debugger.x86; | |
| 26 | |
| 27 import sun.jvm.hotspot.debugger.*; | |
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28 import sun.jvm.hotspot.debugger.cdbg.*; |
| 0 | 29 |
| 30 /** Specifies the thread context on x86 platforms; only a sub-portion | |
| 31 of the context is guaranteed to be present on all operating | |
| 32 systems. */ | |
| 33 | |
| 34 public abstract class X86ThreadContext implements ThreadContext { | |
| 35 // Taken from /usr/include/ia32/sys/reg.h on Solaris/x86 | |
| 36 | |
| 37 // NOTE: the indices for the various registers must be maintained as | |
| 38 // listed across various operating systems. However, only a small | |
| 39 // subset of the registers' values are guaranteed to be present (and | |
| 40 // must be present for the SA's stack walking to work): EAX, EBX, | |
| 41 // ECX, EDX, ESI, EDI, EBP, ESP, and EIP. | |
| 42 | |
| 43 public static final int GS = 0; | |
| 44 public static final int FS = 1; | |
| 45 public static final int ES = 2; | |
| 46 public static final int DS = 3; | |
| 47 public static final int EDI = 4; | |
| 48 public static final int ESI = 5; | |
| 49 public static final int EBP = 6; | |
| 50 public static final int ESP = 7; | |
| 51 public static final int EBX = 8; | |
| 52 public static final int EDX = 9; | |
| 53 public static final int ECX = 10; | |
| 54 public static final int EAX = 11; | |
| 55 public static final int TRAPNO = 12; | |
| 56 public static final int ERR = 13; | |
| 57 public static final int EIP = 14; | |
| 58 public static final int CS = 15; | |
| 59 public static final int EFL = 16; | |
| 60 public static final int UESP = 17; | |
| 61 public static final int SS = 18; | |
| 62 // Additional state (not in reg.h) for debug registers | |
| 63 public static final int DR0 = 19; | |
| 64 public static final int DR1 = 20; | |
| 65 public static final int DR2 = 21; | |
| 66 public static final int DR3 = 22; | |
| 67 public static final int DR6 = 23; | |
| 68 public static final int DR7 = 24; | |
| 69 | |
| 70 | |
| 71 public static final int PC = EIP; | |
| 72 public static final int FP = EBP; | |
| 73 public static final int SP = UESP; | |
| 74 public static final int PS = EFL; | |
| 75 public static final int R0 = EAX; | |
| 76 public static final int R1 = EDX; | |
| 77 | |
| 78 public static final int NPRGREG = 25; | |
| 79 | |
| 80 private static final String[] regNames = { | |
| 81 "GS", "FS", "ES", "DS", | |
| 82 "EDI", "ESI", "EBP", "ESP", | |
| 83 "EBX", "EDX", "ECX", "EAX", | |
| 84 "TRAPNO", "ERR", "EIP", "CS", | |
| 85 "EFLAGS", "UESP", "SS", | |
| 86 "DR0", "DR1", "DR2", "DR3", | |
| 87 "DR6", "DR7" | |
| 88 }; | |
| 89 | |
| 90 // Ought to be int on x86 but we're stuck | |
| 91 private long[] data; | |
| 92 | |
| 93 public X86ThreadContext() { | |
| 94 data = new long[NPRGREG]; | |
| 95 } | |
| 96 | |
| 97 public int getNumRegisters() { | |
| 98 return NPRGREG; | |
| 99 } | |
| 100 | |
| 101 public String getRegisterName(int index) { | |
| 102 return regNames[index]; | |
| 103 } | |
| 104 | |
| 105 public void setRegister(int index, long value) { | |
| 106 data[index] = value; | |
| 107 } | |
| 108 | |
| 109 public long getRegister(int index) { | |
| 110 return data[index]; | |
| 111 } | |
| 112 | |
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113 public CFrame getTopFrame(Debugger dbg) { |
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114 return null; |
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115 } |
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116 |
| 0 | 117 /** This can't be implemented in this class since we would have to |
| 118 tie the implementation to, for example, the debugging system */ | |
| 119 public abstract void setRegisterAsAddress(int index, Address value); | |
| 120 | |
| 121 /** This can't be implemented in this class since we would have to | |
| 122 tie the implementation to, for example, the debugging system */ | |
| 123 public abstract Address getRegisterAsAddress(int index); | |
| 124 } |