--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/asm/x86/FloatDecoder.java Thu Sep 27 11:25:01 2012 -0700
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,253 +0,0 @@
-/*
- * Copyright (c) 2002, 2003, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.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;
- }
-}