| /* |
| * Copyright 2001 Sun Microsystems, Inc. All Rights Reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| */ |
| |
| package sun.jvm.hotspot.asm.x86; |
| |
| import sun.jvm.hotspot.utilities.*; |
| |
| public class X86Registers { |
| public static final int NUM_REGISTERS = 8; |
| |
| public static final X86Register EAX; |
| public static final X86Register ECX; |
| public static final X86Register EDX; |
| public static final X86Register EBX; |
| public static final X86Register ESP; |
| public static final X86Register EBP; |
| public static final X86Register ESI; |
| public static final X86Register EDI; |
| |
| public static final X86Register AX; |
| public static final X86Register CX; |
| public static final X86Register DX; |
| public static final X86Register BX; |
| public static final X86Register SP; |
| public static final X86Register BP; |
| public static final X86Register SI; |
| public static final X86Register DI; |
| |
| public static final X86Register AL; |
| public static final X86Register CL; |
| public static final X86Register DL; |
| public static final X86Register BL; |
| public static final X86Register AH; |
| public static final X86Register CH; |
| public static final X86Register DH; |
| public static final X86Register BH; |
| |
| private static X86Register registers8[]; |
| private static X86Register registers16[]; |
| private static X86Register registers32[]; |
| |
| static { |
| EAX = new X86RegisterPart(0, "%eax", 0, 32); |
| ECX = new X86RegisterPart(1, "%ecx", 0, 32); |
| EDX = new X86RegisterPart(2, "%edx", 0, 32); |
| EBX = new X86RegisterPart(3, "%ebx", 0, 32); |
| ESP = new X86RegisterPart(4, "%esp", 0, 32); |
| EBP = new X86RegisterPart(5, "%ebp", 0, 32); |
| ESI = new X86RegisterPart(6, "%esi", 0, 32); |
| EDI = new X86RegisterPart(7, "%edi", 0, 32); |
| |
| AX = new X86RegisterPart(0, "%ax", 0, 16); |
| CX = new X86RegisterPart(1, "%cx", 0, 16); |
| DX = new X86RegisterPart(2, "%dx", 0, 16); |
| BX = new X86RegisterPart(3, "%bx", 0, 16); |
| SP = new X86RegisterPart(4, "%sp", 0, 16); |
| BP = new X86RegisterPart(5, "%bp", 0, 16); |
| SI = new X86RegisterPart(6, "%si", 0, 16); |
| DI = new X86RegisterPart(7, "%di", 0, 16); |
| |
| AL = new X86RegisterPart(0, "%al", 0, 8); |
| CL = new X86RegisterPart(1, "%cl", 0, 8); |
| DL = new X86RegisterPart(2, "%dl", 0, 8); |
| BL = new X86RegisterPart(3, "%bl", 0, 8); |
| AH = new X86RegisterPart(0, "%ah", 8, 8); |
| CH = new X86RegisterPart(1, "%ch", 8, 8); |
| DH = new X86RegisterPart(2, "%dh", 8, 8); |
| BH = new X86RegisterPart(3, "%bh", 8, 8); |
| |
| registers32 = (new X86Register[] { |
| EAX, ECX, EDX, EBX, ESP, EBP, ESI, EDI |
| }); |
| registers16 = (new X86Register[] { |
| AX, CX, DX, BX, SP, BP, SI, DI |
| }); |
| registers8 = (new X86Register[] { |
| AL, CL, DL, BL, AH, CH, DH, BH |
| }); |
| } |
| |
| public static int getNumberOfRegisters() { |
| return NUM_REGISTERS; |
| } |
| |
| public static X86Register getRegister8(int regNum) { |
| if (Assert.ASSERTS_ENABLED) { |
| Assert.that(regNum > -1 && regNum < NUM_REGISTERS, "invalid integer register number!"); |
| } |
| return registers8[regNum]; |
| } |
| |
| public static X86Register getRegister16(int regNum) { |
| if (Assert.ASSERTS_ENABLED) { |
| Assert.that(regNum > -1 && regNum < NUM_REGISTERS, "invalid integer register number!"); |
| } |
| return registers16[regNum]; |
| } |
| |
| public static X86Register getRegister32(int regNum) { |
| if (Assert.ASSERTS_ENABLED) { |
| Assert.that(regNum > -1 && regNum < NUM_REGISTERS, "invalid integer register number!"); |
| } |
| return registers32[regNum]; |
| } |
| |
| //Return the 32bit register name |
| public static String getRegisterName(int regNum) { |
| if (Assert.ASSERTS_ENABLED) { |
| Assert.that(regNum > -1 && regNum < NUM_REGISTERS, "invalid integer register number!"); |
| } |
| return registers32[regNum].toString(); |
| } |
| } |