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1 /*
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2 * Copyright 2003 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.asm.amd64;
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26
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27 import sun.jvm.hotspot.utilities.*;
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28
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29 public class AMD64Registers {
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30 public static final int NUM_REGISTERS = 16;
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31
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32 public static final AMD64Register RAX;
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33 public static final AMD64Register RCX;
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34 public static final AMD64Register RDX;
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35 public static final AMD64Register RBX;
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36 public static final AMD64Register RSP;
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37 public static final AMD64Register RBP;
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38 public static final AMD64Register RSI;
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39 public static final AMD64Register RDI;
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40 public static final AMD64Register R8;
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41 public static final AMD64Register R9;
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42 public static final AMD64Register R10;
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43 public static final AMD64Register R11;
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44 public static final AMD64Register R12;
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45 public static final AMD64Register R13;
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46 public static final AMD64Register R14;
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47 public static final AMD64Register R15;
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48
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49 private static final AMD64Register[] registers;
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50
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51 static {
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52 RAX = new AMD64Register(0, "rax");
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53 RCX = new AMD64Register(1, "rcx");
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54 RDX = new AMD64Register(2, "rdx");
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55 RBX = new AMD64Register(3, "rbx");
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56 RSP = new AMD64Register(4, "rsp");
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57 RBP = new AMD64Register(5, "rbp");
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58 RSI = new AMD64Register(6, "rsi");
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59 RDI = new AMD64Register(7, "rdi");
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60 R8 = new AMD64Register(8, "r8" );
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61 R9 = new AMD64Register(9, "r9" );
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62 R10 = new AMD64Register(10,"r10");
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63 R11 = new AMD64Register(11,"r11");
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64 R12 = new AMD64Register(12,"r12");
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65 R13 = new AMD64Register(13,"r13");
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66 R14 = new AMD64Register(14,"r14");
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67 R15 = new AMD64Register(15,"r15");
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68 registers = new AMD64Register[] {
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69 RAX, RCX, RDX, RBX, RSP, RBP, RSI, RDI,
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70 R8, R9, R10, R11, R12, R13, R14, R15
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71 };
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72 }
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73
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74 public static int getNumberOfRegisters() {
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75 return NUM_REGISTERS;
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76 }
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77
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78 public static AMD64Register getRegister(int regNum) {
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79 if (Assert.ASSERTS_ENABLED) {
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80 Assert.that(regNum > -1 && regNum < NUM_REGISTERS, "invalid integer register number!");
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81 }
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82 return registers[regNum];
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83 }
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84
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85 //Return the register name
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86 public static String getRegisterName(int regNum) {
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87 if (Assert.ASSERTS_ENABLED) {
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88 Assert.that(regNum > -1 && regNum < NUM_REGISTERS, "invalid integer register number!");
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89 }
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90 return registers[regNum].toString();
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91 }
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92 }
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