| /* |
| * Copyright 2002-2003 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.asm.*; |
| |
| public class GRPDecoder extends InstructionDecoder { |
| |
| final private int number; |
| //Please refer to IA-32 Intel Architecture Software Developer's Manual Volume 2 |
| //APPENDIX A - Table A-4. Opcode Extensions for One and Two-byte Opcodes by Group Number. |
| private static final InstructionDecoder grpTable[][] = { |
| { |
| new ArithmeticDecoder("addb", ADDR_E, b_mode, ADDR_I, b_mode, RTLOP_ADD), |
| new LogicalDecoder("orb", ADDR_E, b_mode, ADDR_I, b_mode, RTLOP_OR), |
| new ArithmeticDecoder("adcb", ADDR_E, b_mode, ADDR_I, b_mode, RTLOP_ADDC), |
| new ArithmeticDecoder("sbbb", ADDR_E, b_mode, ADDR_I, b_mode, RTLOP_SUBC), |
| new LogicalDecoder("andb", ADDR_E, b_mode, ADDR_I, b_mode, RTLOP_AND), |
| new ArithmeticDecoder("subb", ADDR_E, b_mode, ADDR_I, b_mode, RTLOP_SUB), |
| new LogicalDecoder("xorb", ADDR_E, b_mode, ADDR_I, b_mode, RTLOP_XOR), |
| new InstructionDecoder("cmpb", ADDR_E, b_mode, ADDR_I, b_mode) |
| }, |
| { |
| new ArithmeticDecoder("addS", ADDR_E, v_mode, ADDR_I, v_mode, RTLOP_ADD), |
| new LogicalDecoder("orS", ADDR_E, v_mode, ADDR_I, v_mode, RTLOP_OR), |
| new ArithmeticDecoder("adcS", ADDR_E, v_mode, ADDR_I, v_mode, RTLOP_ADDC), |
| new ArithmeticDecoder("sbbS", ADDR_E, v_mode, ADDR_I, v_mode, RTLOP_SUBC), |
| new LogicalDecoder("andS", ADDR_E, v_mode, ADDR_I, v_mode, RTLOP_AND), |
| new ArithmeticDecoder("subS", ADDR_E, v_mode, ADDR_I, v_mode, RTLOP_SUB), |
| new LogicalDecoder("xorS", ADDR_E, v_mode, ADDR_I, v_mode, RTLOP_XOR), |
| new InstructionDecoder("cmpS", ADDR_E, v_mode, ADDR_I, v_mode) |
| }, |
| { |
| new ArithmeticDecoder("addS", ADDR_E, v_mode, ADDR_I, b_mode, RTLOP_ADD), /*note: sIb here*/ |
| new LogicalDecoder("orS", ADDR_E, v_mode, ADDR_I, b_mode, RTLOP_OR), |
| new ArithmeticDecoder("adcS", ADDR_E, v_mode, ADDR_I, b_mode, RTLOP_ADDC), |
| new ArithmeticDecoder("sbbS", ADDR_E, v_mode, ADDR_I, b_mode, RTLOP_SUBC), |
| new LogicalDecoder("andS", ADDR_E, v_mode, ADDR_I, b_mode, RTLOP_AND), |
| new ArithmeticDecoder("subS", ADDR_E, v_mode, ADDR_I, b_mode, RTLOP_SUB), |
| new LogicalDecoder("xorS", ADDR_E, v_mode, ADDR_I, b_mode, RTLOP_XOR), |
| new InstructionDecoder("cmpS", ADDR_E, v_mode, ADDR_I, b_mode) |
| }, |
| { |
| new RotateDecoder("rolb", ADDR_E, b_mode, ADDR_I, b_mode), |
| new RotateDecoder("rorb", ADDR_E, b_mode, ADDR_I, b_mode), |
| new RotateDecoder("rclb", ADDR_E, b_mode, ADDR_I, b_mode), |
| new RotateDecoder("rcrb", ADDR_E, b_mode, ADDR_I, b_mode), |
| new ShiftDecoder("shlb", ADDR_E, b_mode, ADDR_I, b_mode, RTLOP_SLL), |
| new ShiftDecoder("shrb", ADDR_E, b_mode, ADDR_I, b_mode, RTLOP_SRL), |
| null, |
| new ShiftDecoder("sarb", ADDR_E, b_mode, ADDR_I, b_mode, RTLOP_SRA), |
| }, |
| { |
| new RotateDecoder("rolS", ADDR_E, v_mode, ADDR_I, b_mode), |
| new RotateDecoder("rorS", ADDR_E, v_mode, ADDR_I, b_mode), |
| new RotateDecoder("rclS", ADDR_E, v_mode, ADDR_I, b_mode), |
| new RotateDecoder("rcrS", ADDR_E, v_mode, ADDR_I, b_mode), |
| new ShiftDecoder("shlS", ADDR_E, v_mode, ADDR_I, b_mode, RTLOP_SLL), |
| new ShiftDecoder("shrS", ADDR_E, v_mode, ADDR_I, b_mode, RTLOP_SRL), |
| null, |
| new ShiftDecoder("sarS", ADDR_E, v_mode, ADDR_I, b_mode, RTLOP_SRA) |
| }, |
| { |
| new RotateDecoder("rolb", ADDR_E, b_mode), |
| new RotateDecoder("rorb", ADDR_E, b_mode), |
| new RotateDecoder("rclb", ADDR_E, b_mode), |
| new RotateDecoder("rcrb", ADDR_E, b_mode), |
| new ShiftDecoder("shlb", ADDR_E, b_mode, RTLOP_SLL), |
| new ShiftDecoder("shrb", ADDR_E, b_mode, RTLOP_SRL), |
| null, |
| new ShiftDecoder("sarb", ADDR_E, b_mode, RTLOP_SRA) |
| }, |
| { |
| new RotateDecoder("rolS", ADDR_E, v_mode), |
| new RotateDecoder("rorS", ADDR_E, v_mode), |
| new RotateDecoder("rclS", ADDR_E, v_mode), |
| new RotateDecoder("rcrS", ADDR_E, v_mode), |
| new ShiftDecoder("shlS", ADDR_E, v_mode, RTLOP_SLL), |
| new ShiftDecoder("shrS", ADDR_E, v_mode, RTLOP_SRL), |
| null, |
| new ShiftDecoder("sarS", ADDR_E, v_mode, RTLOP_SRA) |
| }, |
| { |
| new RotateDecoder("rolb", ADDR_E, b_mode, ADDR_REG, CL), |
| new RotateDecoder("rorb", ADDR_E, b_mode, ADDR_REG, CL), |
| new RotateDecoder("rclb", ADDR_E, b_mode, ADDR_REG, CL), |
| new RotateDecoder("rcrb", ADDR_E, b_mode, ADDR_REG, CL), |
| new ShiftDecoder( "shlb", ADDR_E, b_mode, ADDR_REG, CL, RTLOP_SLL), |
| new ShiftDecoder("shrb", ADDR_E, b_mode, ADDR_REG, CL, RTLOP_SRL), |
| null, |
| new ShiftDecoder("sarb", ADDR_E, b_mode, ADDR_REG, CL, RTLOP_SRA) |
| }, |
| { |
| new RotateDecoder("rolS", ADDR_E, v_mode, ADDR_REG, CL), |
| new RotateDecoder("rorS", ADDR_E, v_mode, ADDR_REG, CL), |
| new RotateDecoder("rclS", ADDR_E, v_mode, ADDR_REG, CL), |
| new RotateDecoder("rcrS", ADDR_E, v_mode, ADDR_REG, CL), |
| new ShiftDecoder("shlS", ADDR_E, v_mode, ADDR_REG, CL, RTLOP_SLL), |
| new ShiftDecoder("shrS", ADDR_E, v_mode, ADDR_REG, CL, RTLOP_SRL), |
| null, |
| new ShiftDecoder("sarS", ADDR_E, v_mode, ADDR_REG, CL, RTLOP_SRA) |
| }, |
| { |
| new InstructionDecoder("testb", ADDR_E, b_mode, ADDR_I, b_mode), |
| null, /*new InstructionDecoder("(bad)", ADDR_E, b_mode)*/ |
| new LogicalDecoder("notb", ADDR_E, b_mode, RTLOP_NOT), |
| new InstructionDecoder("negb", ADDR_E, b_mode), |
| new ArithmeticDecoder("mulb", ADDR_REG, AL, ADDR_E, b_mode, RTLOP_UMUL), |
| new ArithmeticDecoder("imulb", ADDR_REG, AL, ADDR_E, b_mode, RTLOP_SMUL), |
| new ArithmeticDecoder("divb", ADDR_REG, AL, ADDR_E, b_mode, RTLOP_UDIV), |
| new ArithmeticDecoder("idivb", ADDR_REG, AL, ADDR_E, b_mode, RTLOP_SDIV) |
| }, |
| { |
| new InstructionDecoder("testS", ADDR_E, v_mode, ADDR_I, v_mode), |
| null, |
| new LogicalDecoder("notS", ADDR_E, v_mode, RTLOP_NOT), |
| new InstructionDecoder("negS", ADDR_E, v_mode), |
| new ArithmeticDecoder("mulS", ADDR_REG, EAX, ADDR_E, v_mode, RTLOP_UMUL), |
| new ArithmeticDecoder("imulS", ADDR_REG, EAX, ADDR_E, v_mode, RTLOP_SMUL), |
| new ArithmeticDecoder("divS", ADDR_REG, EAX, ADDR_E, v_mode, RTLOP_SDIV), |
| new ArithmeticDecoder("idivS", ADDR_REG, EAX, ADDR_E, v_mode, RTLOP_SDIV) |
| }, |
| { |
| new ArithmeticDecoder("incb", ADDR_E, b_mode, RTLOP_ADD), |
| new ArithmeticDecoder("decb", ADDR_E, b_mode, RTLOP_SUB), |
| null, |
| null, |
| null, |
| null, |
| null, |
| null |
| }, |
| { |
| new ArithmeticDecoder("incS", ADDR_E, v_mode, RTLOP_ADD), |
| new ArithmeticDecoder("decS", ADDR_E, v_mode, RTLOP_SUB), |
| new CallDecoder("call", ADDR_E, v_mode), |
| new CallDecoder("lcall", ADDR_E, p_mode), |
| new JmpDecoder("jmp", ADDR_E, v_mode), |
| new JmpDecoder("ljmp", ADDR_E, p_mode), |
| new InstructionDecoder("pushS", ADDR_E, v_mode), |
| null |
| }, |
| { |
| new InstructionDecoder("sldt", ADDR_E, w_mode), |
| new InstructionDecoder("str", ADDR_E, w_mode), |
| new InstructionDecoder("lldt", ADDR_E, w_mode), |
| new InstructionDecoder("ltr", ADDR_E, w_mode), |
| new InstructionDecoder("verr", ADDR_E, w_mode), |
| new InstructionDecoder("verw", ADDR_E, w_mode), |
| null, |
| null |
| }, |
| { |
| new InstructionDecoder("sgdt", ADDR_E, w_mode), |
| new InstructionDecoder("sidt", ADDR_E, w_mode), |
| new InstructionDecoder("lgdt", ADDR_E, w_mode), |
| new InstructionDecoder("lidt", ADDR_E, w_mode), |
| new InstructionDecoder("smsw", ADDR_E, w_mode), |
| null, |
| new InstructionDecoder("lmsw", ADDR_E, w_mode), |
| new InstructionDecoder("invlpg", ADDR_E, w_mode) |
| }, |
| { |
| null, |
| null, |
| null, |
| null, |
| new InstructionDecoder("btS", ADDR_E, v_mode, ADDR_I, b_mode), |
| new InstructionDecoder("btsS", ADDR_E, v_mode, ADDR_I, b_mode), |
| new InstructionDecoder("btrS", ADDR_E, v_mode, ADDR_I, b_mode), |
| new InstructionDecoder("btcS", ADDR_E, v_mode, ADDR_I, b_mode) |
| }, |
| /*16*/ |
| { |
| null, |
| new SSEInstructionDecoder("cmpxch8b", ADDR_W, q_mode), |
| null, |
| null, |
| null, |
| null, |
| null, |
| null |
| }, |
| /*17*/ |
| { |
| null, |
| null, |
| new SSEShiftDecoder("psrlw", ADDR_P, q_mode, ADDR_I, b_mode, RTLOP_SRL), |
| null, |
| new SSEShiftDecoder("psraw", ADDR_P, q_mode, ADDR_I, b_mode, RTLOP_SRA), |
| null, |
| new SSEShiftDecoder("psllw", ADDR_P, q_mode, ADDR_I, b_mode, RTLOP_SLL), |
| null |
| }, |
| /*18*/ |
| { |
| null, |
| null, |
| new SSEShiftDecoder("psrld", ADDR_P, q_mode, ADDR_I, b_mode, RTLOP_SRL), |
| null, |
| new SSEShiftDecoder("psrad", ADDR_P, q_mode, ADDR_I, b_mode, RTLOP_SRA), |
| null, |
| new SSEShiftDecoder("pslld", ADDR_P, q_mode, ADDR_I, b_mode, RTLOP_SLL), |
| null |
| }, |
| /*19*/ |
| { |
| null, |
| null, |
| new SSEShiftDecoder("psrlq", ADDR_P, q_mode, ADDR_I, b_mode, RTLOP_SRL), |
| null, |
| null, |
| null, |
| new SSEShiftDecoder("psllq", ADDR_P, q_mode, ADDR_I, b_mode, RTLOP_SLL), |
| null |
| }, |
| /*20 - Grp15*/ |
| { |
| new SSEInstructionDecoder("fxsave"), |
| new SSEInstructionDecoder("fxrstor"), |
| new SSEInstructionDecoder("ldmxcsr"), |
| new SSEInstructionDecoder("stmxcsr"), |
| null, |
| null, |
| null, |
| new SSEInstructionDecoder("clflush") |
| }, |
| /*21 - Grp16*/ |
| { |
| new SSEInstructionDecoder("prefetchnta"), |
| new SSEInstructionDecoder("prefetcht0"), |
| new SSEInstructionDecoder("prefetcht1"), |
| new SSEInstructionDecoder("prefetcht2"), |
| null, |
| null, |
| null, |
| null |
| }, |
| /*22 - Grp12:66*/ |
| { |
| null, |
| null, |
| new SSEShiftDecoder("psrlw", ADDR_P, dq_mode, ADDR_I, b_mode, RTLOP_SRL), |
| null, |
| new SSEShiftDecoder("psraw", ADDR_P, dq_mode, ADDR_I, b_mode, RTLOP_SRA), |
| null, |
| new SSEShiftDecoder("psllw", ADDR_P, dq_mode, ADDR_I, b_mode, RTLOP_SLL), |
| null |
| }, |
| /*23 - Grp13:66*/ |
| { |
| null, |
| null, |
| new SSEShiftDecoder("psrld", ADDR_W, dq_mode, ADDR_I, b_mode, RTLOP_SRL), |
| null, |
| new SSEShiftDecoder("psrad", ADDR_W, dq_mode, ADDR_I, b_mode, RTLOP_SRA), |
| null, |
| new SSEShiftDecoder("pslld", ADDR_W, dq_mode, ADDR_I, b_mode, RTLOP_SLL), |
| null |
| }, |
| /*24 - - Grp14:66*/ |
| { |
| null, |
| null, |
| new SSEShiftDecoder("psrlq", ADDR_W, dq_mode, ADDR_I, b_mode, RTLOP_SRL), |
| new SSEShiftDecoder("psrldq", ADDR_W, dq_mode, ADDR_I, b_mode, RTLOP_SRL), |
| null, |
| null, |
| new SSEShiftDecoder("psllq", ADDR_W, dq_mode, ADDR_I, b_mode, RTLOP_SLL), |
| new SSEShiftDecoder("psllq", ADDR_W, dq_mode, ADDR_I, b_mode, RTLOP_SLL) |
| } |
| }; |
| |
| public GRPDecoder(String name, int number) { |
| super(name); |
| this.number = number; |
| } |
| |
| public Instruction decode(byte[] bytesArray, int index, int instrStartIndex, int segmentOverride, int prefixes, X86InstructionFactory factory) { |
| this.byteIndex = index; |
| this.instrStartIndex = instrStartIndex; |
| this.prefixes = prefixes; |
| |
| int ModRM = readByte(bytesArray, byteIndex); |
| int reg = (ModRM >> 3) & 7; |
| |
| InstructionDecoder instrDecoder = grpTable[number][reg]; |
| Instruction instr = null; |
| if(instrDecoder != null) { |
| instr = instrDecoder.decode(bytesArray, byteIndex, instrStartIndex, segmentOverride, prefixes, factory); |
| byteIndex = instrDecoder.getCurrentIndex(); |
| } else { |
| instr = factory.newIllegalInstruction(); |
| } |
| |
| return instr; |
| } |
| } |
