--- old/agent/src/share/classes/sun/jvm/hotspot/asm/x86/FloatDecoder.java Thu Sep 17 16:10:29 2009 +++ /dev/null Thu Sep 17 16:10:29 2009 @@ -1,253 +0,0 @@ -/* - * 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 FloatDecoder extends FPInstructionDecoder { - - public FloatDecoder() { - super(null); - } - - //Please refer to IA-32 Intel Architecture Software Developer's Manual Volume 2 - //APPENDIX A - Escape opcodes - - /*When ModR/M byte is within 00h to BFh*/ - private static final FPInstructionDecoder floatMapOne[][] = { - /* d8 */ - { - new FPArithmeticDecoder("fadds", ADDR_E, v_mode, RTLOP_ADD), - new FPArithmeticDecoder("fmuls", ADDR_E, v_mode, RTLOP_SMUL), - new FPInstructionDecoder("fcoms", ADDR_E, v_mode), - new FPInstructionDecoder("fcomps", ADDR_E, v_mode), - new FPArithmeticDecoder("fsubs", ADDR_E, v_mode, RTLOP_SUB), - new FPArithmeticDecoder("fsubrs", ADDR_E, v_mode, RTLOP_SUB), - new FPArithmeticDecoder("fdivs", ADDR_E, v_mode, RTLOP_SDIV), - new FPArithmeticDecoder("fdivrs", ADDR_E, v_mode, RTLOP_SDIV) - }, - /* d9 */ - { - new FPLoadDecoder("flds", ADDR_E, v_mode), - null, - new FPStoreDecoder("fsts", ADDR_E, v_mode), - new FPStoreDecoder("fstps", ADDR_E, v_mode), - new FPStoreDecoder("fldenv", ADDR_E, v_mode), - new FPStoreDecoder("fldcw", ADDR_E, v_mode), - new FPStoreDecoder("fNstenv", ADDR_E, v_mode), - new FPStoreDecoder("fNstcw", ADDR_E, v_mode) - }, - /* da */ - { - new FPArithmeticDecoder("fiaddl", ADDR_E, v_mode, RTLOP_ADD), - new FPArithmeticDecoder("fimull", ADDR_E, v_mode, RTLOP_SMUL), - new FPInstructionDecoder("ficoml", ADDR_E, v_mode), - new FPInstructionDecoder("ficompl", ADDR_E, v_mode), - new FPArithmeticDecoder("fisubl", ADDR_E, v_mode, RTLOP_SUB), - new FPArithmeticDecoder("fisubrl", ADDR_E, v_mode, RTLOP_SUB), - new FPArithmeticDecoder("fidivl", ADDR_E, v_mode, RTLOP_SDIV), - new FPArithmeticDecoder("fidivrl", ADDR_E, v_mode, RTLOP_SDIV) - }, - /* db */ - { - new FPLoadDecoder("fildl", ADDR_E, v_mode), - null, - new FPStoreDecoder("fistl", ADDR_E, v_mode), - new FPStoreDecoder("fistpl", ADDR_E, v_mode), - null, - new FPLoadDecoder("fldt", ADDR_E, v_mode), - null, - new FPStoreDecoder("fstpt", ADDR_E, v_mode) - }, - /* dc */ - { - new FPArithmeticDecoder("faddl", ADDR_E, v_mode, RTLOP_ADD), - new FPArithmeticDecoder("fmull", ADDR_E, v_mode, RTLOP_SMUL), - new FPInstructionDecoder("fcoml", ADDR_E, v_mode), - new FPInstructionDecoder("fcompl", ADDR_E, v_mode), - new FPArithmeticDecoder("fsubl", ADDR_E, v_mode, RTLOP_SUB), - new FPArithmeticDecoder("fsubrl", ADDR_E, v_mode, RTLOP_SUB), - new FPArithmeticDecoder("fdivl", ADDR_E, v_mode, RTLOP_SDIV), - new FPArithmeticDecoder("fdivrl", ADDR_E, v_mode, RTLOP_SDIV) - }, - /* dd */ - { - new FPLoadDecoder("fldl", ADDR_E, v_mode), - null, - new FPStoreDecoder("fstl", ADDR_E, v_mode), - new FPStoreDecoder("fstpl", ADDR_E, v_mode), - new FPStoreDecoder("frstor", ADDR_E, v_mode), - null, - new FPStoreDecoder("fNsave", ADDR_E, v_mode), - new FPStoreDecoder("fNstsw", ADDR_E, v_mode) - }, - /* de */ - { - new FPArithmeticDecoder("fiadd", ADDR_E, v_mode, RTLOP_ADD), - new FPArithmeticDecoder("fimul", ADDR_E, v_mode, RTLOP_SMUL), - new FPInstructionDecoder("ficom", ADDR_E, v_mode), - new FPInstructionDecoder("ficomp", ADDR_E, v_mode), - new FPArithmeticDecoder("fisub", ADDR_E, v_mode, RTLOP_SUB), - new FPArithmeticDecoder("fisubr", ADDR_E, v_mode, RTLOP_SUB), - new FPArithmeticDecoder("fidiv", ADDR_E, v_mode, RTLOP_SDIV), - new FPArithmeticDecoder("fidivr", ADDR_E, v_mode, RTLOP_SDIV) - }, - /* df */ - { - new FPLoadDecoder("fild", ADDR_E, v_mode), - null, - new FPStoreDecoder("fist", ADDR_E, v_mode), - new FPStoreDecoder("fistp", ADDR_E, v_mode), - new FPLoadDecoder("fbld", ADDR_E, v_mode), - new FPLoadDecoder("fildll", ADDR_E, v_mode), - new FPStoreDecoder("fbstp", ADDR_E, v_mode), - new FPStoreDecoder("fistpll", ADDR_E, v_mode) - } - }; - - /*When ModR/M byte is outside 00h to BFh*/ - private static final FPInstructionDecoder floatMapTwo[][] = { - - /* d8 */ - /*parameter for ADDR_FPREG, 0 means ST(0), 1 means ST at rm value. */ - { - new FPArithmeticDecoder("fadd", ADDR_FPREG, 0, ADDR_FPREG, 1, RTLOP_ADD), - new FPArithmeticDecoder("fmul", ADDR_FPREG, 0, ADDR_FPREG, 1, RTLOP_SMUL), - new FPInstructionDecoder("fcom", ADDR_FPREG, 1), - new FPInstructionDecoder("fcomp", ADDR_FPREG, 1), - new FPArithmeticDecoder("fsub", ADDR_FPREG, 0, ADDR_FPREG, 1, RTLOP_SUB), - new FPArithmeticDecoder("fsubr", ADDR_FPREG, 0, ADDR_FPREG, 1, RTLOP_SUB), - new FPArithmeticDecoder("fdiv", ADDR_FPREG, 0, ADDR_FPREG, 1, RTLOP_SDIV), - new FPArithmeticDecoder("fdivr", ADDR_FPREG, 0, ADDR_FPREG, 1, RTLOP_SDIV) - }, - /* d9 */ - { - new FPLoadDecoder("fld", ADDR_FPREG, 1), - new FPInstructionDecoder("fxch", ADDR_FPREG, 1), - new FloatGRPDecoder(null, 0), - null, - new FloatGRPDecoder(null, 1), - new FloatGRPDecoder(null, 2), - new FloatGRPDecoder(null, 3), - new FloatGRPDecoder(null, 4) - }, - /* da */ - { - null, - null, - null, - null, - null, - new FloatGRPDecoder(null, 5), - null, - null - }, - /* db */ - { - null, - null, - null, - null, - new FloatGRPDecoder(null, 6), - null, - null, - null - }, - /* dc */ - { - new FPArithmeticDecoder("fadd", ADDR_FPREG, 1, ADDR_FPREG, 0, RTLOP_ADD), - new FPArithmeticDecoder("fmul", ADDR_FPREG, 1, ADDR_FPREG, 0, RTLOP_SMUL), - null, - null, - new FPArithmeticDecoder("fsub", ADDR_FPREG, 1, ADDR_FPREG, 0, RTLOP_SUB), - new FPArithmeticDecoder("fsubr",ADDR_FPREG, 1, ADDR_FPREG, 0, RTLOP_SUB), - new FPArithmeticDecoder("fdiv", ADDR_FPREG, 1, ADDR_FPREG, 0, RTLOP_SDIV), - new FPArithmeticDecoder("fdivr", ADDR_FPREG, 1, ADDR_FPREG, 0, RTLOP_SDIV) - }, - /* dd */ - { - new FPInstructionDecoder("ffree", ADDR_FPREG, 1), - null, - new FPStoreDecoder("fst", ADDR_FPREG, 1), - new FPStoreDecoder("fstp", ADDR_FPREG, 1), - new FPInstructionDecoder("fucom", ADDR_FPREG, 1), - new FPInstructionDecoder("fucomp", ADDR_FPREG, 1), - null, - null - }, - /* de */ - { - new FPArithmeticDecoder("faddp", ADDR_FPREG, 1, ADDR_FPREG, 0, RTLOP_ADD), - new FPArithmeticDecoder("fmulp", ADDR_FPREG, 1, ADDR_FPREG, 0, RTLOP_SMUL), - null, - new FloatGRPDecoder(null, 7), - new FPArithmeticDecoder("fsubrp", ADDR_FPREG, 1, ADDR_FPREG, 0, RTLOP_SUB), - new FPArithmeticDecoder("fsubp", ADDR_FPREG, 1, ADDR_FPREG, 0, RTLOP_SUB), - new FPArithmeticDecoder("fdivrp", ADDR_FPREG, 1, ADDR_FPREG, 0, RTLOP_SDIV), - new FPArithmeticDecoder("fdivp", ADDR_FPREG, 1, ADDR_FPREG, 0, RTLOP_SDIV) - }, - /* df */ - { - null, - null, - null, - null, - new FloatGRPDecoder(null, 7), - null, - null, - null - } - }; - - 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; - int regOrOpcode = (ModRM >> 3) & 7; - int rm = ModRM & 7; - - int floatOpcode = InstructionDecoder.readByte(bytesArray, instrStartIndex); - FPInstructionDecoder instrDecoder = null; - - if(ModRM < 0xbf) { - instrDecoder = floatMapOne[floatOpcode - 0xd8][reg]; - } - else { - instrDecoder = floatMapTwo[floatOpcode - 0xd8][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; - } -}