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1 /*
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2 * Copyright 2003-2004 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 package sun.jvm.hotspot.debugger.amd64;
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26
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27 import sun.jvm.hotspot.debugger.*;
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28
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29 /** Specifies the thread context on amd64 platforms; only a sub-portion
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30 * of the context is guaranteed to be present on all operating
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31 * systems. */
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32
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33 public abstract class AMD64ThreadContext implements ThreadContext {
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34 // Taken from /usr/include/sys/regset.h on Solaris/AMD64.
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35
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36 // NOTE: the indices for the various registers must be maintained as
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37 // listed across various operating systems. However, only a small
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38 // subset of the registers' values are guaranteed to be present (and
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39 // must be present for the SA's stack walking to work)
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40
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41 public static final int R15 = 0;
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42 public static final int R14 = 1;
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43 public static final int R13 = 2;
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44 public static final int R12 = 3;
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45 public static final int R11 = 4;
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46 public static final int R10 = 5;
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47 public static final int R9 = 6;
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48 public static final int R8 = 7;
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49 public static final int RDI = 8;
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50 public static final int RSI = 9;
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51 public static final int RBP = 10;
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52 public static final int RBX = 11;
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53 public static final int RDX = 12;
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54 public static final int RCX = 13;
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55 public static final int RAX = 14;
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56 public static final int TRAPNO = 15;
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57 public static final int ERR = 16;
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58 public static final int RIP = 17;
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59 public static final int CS = 18;
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60 public static final int RFL = 19;
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61 public static final int RSP = 20;
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62 public static final int SS = 21;
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63 public static final int FS = 22;
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64 public static final int GS = 23;
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65 public static final int ES = 24;
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66 public static final int DS = 25;
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67 public static final int FSBASE = 26;
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68 public static final int GSBASE = 27;
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69
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70 public static final int NPRGREG = 28;
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71
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72 private static final String[] regNames = {
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73 "r15", "r14", "r13", "r12", "r11", "r10", "r9", "r8",
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74 "rdi", "rsi", "rbp", "rbx", "rdx", "rcx", "rax", "trapno",
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75 "err", "rip", "cs", "rfl", "rsp", "ss", "fs", "gs",
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76 "es", "ds", "fsbase", "gsbase"
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77 };
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78
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79 private long[] data;
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80
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81 public AMD64ThreadContext() {
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82 data = new long[NPRGREG];
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83 }
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84
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85 public int getNumRegisters() {
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86 return NPRGREG;
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87 }
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88
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89 public String getRegisterName(int index) {
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90 return regNames[index];
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91 }
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92
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93 public void setRegister(int index, long value) {
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94 data[index] = value;
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95 }
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96
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97 public long getRegister(int index) {
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98 return data[index];
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99 }
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100
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101 /** This can't be implemented in this class since we would have to
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102 * tie the implementation to, for example, the debugging system */
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103 public abstract void setRegisterAsAddress(int index, Address value);
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104
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105 /** This can't be implemented in this class since we would have to
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106 * tie the implementation to, for example, the debugging system */
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107 public abstract Address getRegisterAsAddress(int index);
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108 }
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