1 /* 2 * Copyright 2003 Sun Microsystems, Inc. All Rights Reserved. 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 * 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 20 * CA 95054 USA or visit www.sun.com if you need additional information or 21 * have any questions. 22 * 23 */ 24 25 package sun.jvm.hotspot.asm.amd64; 26 27 import sun.jvm.hotspot.utilities.*; 28 29 public class AMD64Registers { 30 public static final int NUM_REGISTERS = 16; 31 32 public static final AMD64Register RAX; 33 public static final AMD64Register RCX; 34 public static final AMD64Register RDX; 35 public static final AMD64Register RBX; 36 public static final AMD64Register RSP; 37 public static final AMD64Register RBP; 38 public static final AMD64Register RSI; 39 public static final AMD64Register RDI; 40 public static final AMD64Register R8; 41 public static final AMD64Register R9; 42 public static final AMD64Register R10; 43 public static final AMD64Register R11; 44 public static final AMD64Register R12; 45 public static final AMD64Register R13; 46 public static final AMD64Register R14; 47 public static final AMD64Register R15; 48 49 private static final AMD64Register[] registers; 50 51 static { 52 RAX = new AMD64Register(0, "rax"); 53 RCX = new AMD64Register(1, "rcx"); 54 RDX = new AMD64Register(2, "rdx"); 55 RBX = new AMD64Register(3, "rbx"); 56 RSP = new AMD64Register(4, "rsp"); 57 RBP = new AMD64Register(5, "rbp"); 58 RSI = new AMD64Register(6, "rsi"); 59 RDI = new AMD64Register(7, "rdi"); 60 R8 = new AMD64Register(8, "r8" ); 61 R9 = new AMD64Register(9, "r9" ); 62 R10 = new AMD64Register(10,"r10"); 63 R11 = new AMD64Register(11,"r11"); 64 R12 = new AMD64Register(12,"r12"); 65 R13 = new AMD64Register(13,"r13"); 66 R14 = new AMD64Register(14,"r14"); 67 R15 = new AMD64Register(15,"r15"); 68 registers = new AMD64Register[] { 69 RAX, RCX, RDX, RBX, RSP, RBP, RSI, RDI, 70 R8, R9, R10, R11, R12, R13, R14, R15 71 }; 72 } 73 74 public static int getNumberOfRegisters() { 75 return NUM_REGISTERS; 76 } 77 78 public static AMD64Register getRegister(int regNum) { 79 if (Assert.ASSERTS_ENABLED) { 80 Assert.that(regNum > -1 && regNum < NUM_REGISTERS, "invalid integer register number!"); 81 } 82 return registers[regNum]; 83 } 84 85 //Return the register name 86 public static String getRegisterName(int regNum) { 87 if (Assert.ASSERTS_ENABLED) { 88 Assert.that(regNum > -1 && regNum < NUM_REGISTERS, "invalid integer register number!"); 89 } 90 return registers[regNum].toString(); 91 } 92 }