| [984] | 1 | /* Copyright 2006-2009, BeatriX
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| 2 | * File coded by BeatriX
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| 3 | *
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| 4 | * This file is part of BeaEngine.
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| 5 | *
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| 6 | * BeaEngine is free software: you can redistribute it and/or modify
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| 7 | * it under the terms of the GNU Lesser General Public License as published by
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| 8 | * the Free Software Foundation, either version 3 of the License, or
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| 9 | * (at your option) any later version.
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| 10 | *
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| 11 | * BeaEngine is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | * GNU Lesser General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU Lesser General Public License
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| 17 | * along with BeaEngine. If not, see <http://www.gnu.org/licenses/>. */
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| 18 |
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| 19 | /* ====================================================================
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| 20 | * Legacy Prefix F0h-Group 1
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| 21 | * ==================================================================== */
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| 22 | void __bea_callspec__ PrefLock(PDISASM pMyDisasm)
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| 23 | {
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| 24 | if (!Security(0, pMyDisasm)) return;
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| 25 | (*pMyDisasm).Prefix.LockPrefix = InvalidPrefix;
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| 26 | GV.EIP_++;
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| 27 | (*pMyDisasm).Prefix.Number++;
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| 28 | GV.NB_PREFIX++;
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| 29 | (*pMyDisasm).Instruction.Opcode = *((UInt8*) (UIntPtr)GV.EIP_);
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| 30 | (void) opcode_map1[*((UInt8*) (UIntPtr)GV.EIP_)](pMyDisasm);
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| 31 | GV.OperandSize = 32;
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| 32 | }
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| 33 |
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| 34 | /* ====================================================================
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| 35 | * Legacy Prefix F2h-Group 1
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| 36 | * ==================================================================== */
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| 37 | void __bea_callspec__ PrefREPNE(PDISASM pMyDisasm)
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| 38 | {
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| 39 | if (!Security(0, pMyDisasm)) return;
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| 40 | (*pMyDisasm).Prefix.RepnePrefix = SuperfluousPrefix;
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| 41 | GV.EIP_++;
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| 42 | (*pMyDisasm).Prefix.Number++;
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| 43 | GV.NB_PREFIX++;
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| 44 | GV.PrefRepne = 1;
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| 45 | (*pMyDisasm).Instruction.Opcode = *((UInt8*) (UIntPtr)GV.EIP_);
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| 46 | (void) opcode_map1[*((UInt8*) (UIntPtr)GV.EIP_)](pMyDisasm);
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| 47 | GV.PrefRepne = 0;
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| 48 | }
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| 49 |
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| 50 | /* ====================================================================
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| 51 | * Legacy Prefix F3h-Group 1
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| 52 | * ==================================================================== */
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| 53 | void __bea_callspec__ PrefREPE(PDISASM pMyDisasm)
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| 54 | {
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| 55 | if (!Security(0, pMyDisasm)) return;
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| 56 | (*pMyDisasm).Prefix.RepPrefix = SuperfluousPrefix;
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| 57 | GV.EIP_++;
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| 58 | (*pMyDisasm).Prefix.Number++;
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| 59 | GV.NB_PREFIX++;
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| 60 | GV.PrefRepe = 1;
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| 61 | (*pMyDisasm).Instruction.Opcode = *((UInt8*) (UIntPtr)GV.EIP_);
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| 62 | (void) opcode_map1[*((UInt8*) (UIntPtr)GV.EIP_)](pMyDisasm);
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| 63 | GV.PrefRepe = 0;
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| 64 | }
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| 65 |
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| 66 | /* ====================================================================
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| 67 | * Legacy Prefix 2Eh-Group 2
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| 68 | * ==================================================================== */
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| 69 | void __bea_callspec__ PrefSEGCS(PDISASM pMyDisasm)
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| 70 | {
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| 71 | if (!Security(0, pMyDisasm)) return;
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| 72 | (*pMyDisasm).Prefix.CSPrefix = InUsePrefix;
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| 73 | GV.EIP_++;
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| 74 | (*pMyDisasm).Prefix.Number++;
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| 75 | GV.NB_PREFIX++;
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| 76 | (*pMyDisasm).Instruction.Opcode = *((UInt8*) (UIntPtr)GV.EIP_);
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| 77 | (void) opcode_map1[*((UInt8*) (UIntPtr)GV.EIP_)](pMyDisasm);
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| 78 | }
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| 79 |
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| 80 | /* ====================================================================
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| 81 | * Legacy Prefix 3Eh-Group 2
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| 82 | * ==================================================================== */
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| 83 | void __bea_callspec__ PrefSEGDS(PDISASM pMyDisasm)
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| 84 | {
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| 85 | if (!Security(0, pMyDisasm)) return;
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| 86 | (*pMyDisasm).Prefix.DSPrefix = InUsePrefix;
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| 87 | GV.EIP_++;
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| 88 | (*pMyDisasm).Prefix.Number++;
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| 89 | GV.NB_PREFIX++;
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| 90 | (*pMyDisasm).Instruction.Opcode = *((UInt8*) (UIntPtr)GV.EIP_);
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| 91 | (void) opcode_map1[*((UInt8*) (UIntPtr)GV.EIP_)](pMyDisasm);
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| 92 | }
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| 93 |
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| 94 | /* ====================================================================
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| 95 | * Legacy Prefix 26h-Group 2
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| 96 | * ==================================================================== */
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| 97 | void __bea_callspec__ PrefSEGES(PDISASM pMyDisasm)
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| 98 | {
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| 99 | if (!Security(0, pMyDisasm)) return;
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| 100 | (*pMyDisasm).Prefix.ESPrefix = InUsePrefix;
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| 101 | GV.EIP_++;
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| 102 | (*pMyDisasm).Prefix.Number++;
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| 103 | GV.NB_PREFIX++;
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| 104 | (*pMyDisasm).Instruction.Opcode = *((UInt8*) (UIntPtr)GV.EIP_);
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| 105 | (void) opcode_map1[*((UInt8*) (UIntPtr)GV.EIP_)](pMyDisasm);
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| 106 | }
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| 107 |
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| 108 | /* ====================================================================
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| 109 | * Legacy Prefix 64h-Group 2
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| 110 | * ==================================================================== */
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| 111 | void __bea_callspec__ PrefSEGFS(PDISASM pMyDisasm)
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| 112 | {
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| 113 | if (!Security(0, pMyDisasm)) return;
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| 114 | (*pMyDisasm).Prefix.FSPrefix = InUsePrefix;
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| 115 | GV.EIP_++;
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| 116 | (*pMyDisasm).Prefix.Number++;
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| 117 | GV.NB_PREFIX++;
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| 118 | GV.SEGMENTFS = 1;
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| 119 | (*pMyDisasm).Instruction.Opcode = *((UInt8*) (UIntPtr)GV.EIP_);
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| 120 | (void) opcode_map1[*((UInt8*) (UIntPtr)GV.EIP_)](pMyDisasm);
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| 121 | }
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| 122 |
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| 123 | /* ====================================================================
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| 124 | * Legacy Prefix 65h-Group 2
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| 125 | * ==================================================================== */
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| 126 | void __bea_callspec__ PrefSEGGS(PDISASM pMyDisasm)
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| 127 | {
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| 128 | if (!Security(0, pMyDisasm)) return;
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| 129 | (*pMyDisasm).Prefix.GSPrefix = InUsePrefix;
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| 130 | GV.EIP_++;
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| 131 | (*pMyDisasm).Prefix.Number++;
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| 132 | GV.NB_PREFIX++;
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| 133 | (*pMyDisasm).Instruction.Opcode = *((UInt8*) (UIntPtr)GV.EIP_);
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| 134 | (void) opcode_map1[*((UInt8*) (UIntPtr)GV.EIP_)](pMyDisasm);
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| 135 | }
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| 136 |
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| 137 |
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| 138 | /* ====================================================================
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| 139 | * Legacy Prefix 36h-Group 2
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| 140 | * ==================================================================== */
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| 141 | void __bea_callspec__ PrefSEGSS(PDISASM pMyDisasm)
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| 142 | {
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| 143 | if (!Security(0, pMyDisasm)) return;
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| 144 | (*pMyDisasm).Prefix.SSPrefix = InUsePrefix;
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| 145 | GV.EIP_++;
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| 146 | (*pMyDisasm).Prefix.Number++;
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| 147 | GV.NB_PREFIX++;
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| 148 | (*pMyDisasm).Instruction.Opcode = *((UInt8*) (UIntPtr)GV.EIP_);
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| 149 | (void) opcode_map1[*((UInt8*) (UIntPtr)GV.EIP_)](pMyDisasm);
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| 150 | }
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| 151 |
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| 152 | /* ====================================================================
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| 153 | * Legacy Prefix 66h-Group 3
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| 154 | * ==================================================================== */
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| 155 | void __bea_callspec__ PrefOpSize(PDISASM pMyDisasm)
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| 156 | {
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| 157 | if (!Security(0, pMyDisasm)) return;
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| 158 | (*pMyDisasm).Prefix.OperandSize = InUsePrefix;
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| 159 | GV.EIP_++;
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| 160 | (*pMyDisasm).Prefix.Number++;
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| 161 | GV.NB_PREFIX++;
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| 162 | GV.OriginalOperandSize = GV.OperandSize; /* if GV.OperandSize is used as a mandatory prefix, keep the real operandsize value */
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| 163 | if (GV.Architecture == 16) {
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| 164 | GV.OperandSize = 32;
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| 165 | }
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| 166 | else {
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| 167 | if (GV.OperandSize != 64) {
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| 168 | GV.OperandSize = 16;
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| 169 | }
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| 170 | }
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| 171 | (*pMyDisasm).Instruction.Opcode = *((UInt8*) (UIntPtr)GV.EIP_);
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| 172 | (void) opcode_map1[*((UInt8*) (UIntPtr)GV.EIP_)](pMyDisasm);
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| 173 | if (GV.Architecture == 16) {
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| 174 | GV.OperandSize = 16;
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| 175 | }
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| 176 | else {
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| 177 | GV.OperandSize = 32;
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| 178 | }
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| 179 | }
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| 180 |
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| 181 | /* ====================================================================
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| 182 | * Legacy Prefix 67h-Group 4
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| 183 | * ==================================================================== */
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| 184 | void __bea_callspec__ PrefAdSize(PDISASM pMyDisasm)
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| 185 | {
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| 186 | if (!Security(0, pMyDisasm)) return;
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| 187 | (*pMyDisasm).Prefix.AddressSize = InUsePrefix;
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| 188 | GV.EIP_++;
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| 189 | (*pMyDisasm).Prefix.Number++;
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| 190 | GV.NB_PREFIX++;
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| 191 | if (GV.Architecture == 16) {
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| 192 | GV.AddressSize = GV.AddressSize << 1;
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| 193 | }
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| 194 | else {
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| 195 | GV.AddressSize = GV.AddressSize >> 1;
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| 196 | }
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| 197 |
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| 198 | (*pMyDisasm).Instruction.Opcode = *((UInt8*) (UIntPtr)GV.EIP_);
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| 199 | (void) opcode_map1[*((UInt8*) (UIntPtr)GV.EIP_)](pMyDisasm);
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| 200 | if (GV.Architecture == 16) {
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| 201 | GV.AddressSize = GV.AddressSize >> 1;
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| 202 | }
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| 203 | else {
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| 204 | GV.AddressSize = GV.AddressSize << 1;
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| 205 | }
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| 206 |
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| 207 | }
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| 208 |
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| 209 | /* ====================================================================
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| 210 | * Escape Prefix 0Fh-two bytes opcodes
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| 211 | * ==================================================================== */
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| 212 | void __bea_callspec__ Esc_2byte(PDISASM pMyDisasm)
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| 213 | {
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| 214 | if (!Security(0, pMyDisasm)) return;
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| 215 | GV.EIP_++;
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| 216 | (*pMyDisasm).Instruction.Opcode = *((UInt8*) (UIntPtr)GV.EIP_)+0x0F00;
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| 217 | (void) opcode_map2[*((UInt8*) (UIntPtr)GV.EIP_)](pMyDisasm);
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| 218 | }
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| 219 |
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| 220 | /* ====================================================================
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| 221 | * Escape Prefix 0F38h-three bytes opcodes
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| 222 | * ==================================================================== */
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| 223 | void __bea_callspec__ Esc_tableA4(PDISASM pMyDisasm)
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| 224 | {
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| 225 | if (!Security(0, pMyDisasm)) return;
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| 226 | GV.EIP_++;
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| 227 | (*pMyDisasm).Instruction.Opcode = *((UInt8*) (UIntPtr)GV.EIP_)+0x0F3800;
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| 228 | (void) opcode_map3[*((UInt8*) (UIntPtr)GV.EIP_)](pMyDisasm);
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| 229 | }
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| 230 | /* ====================================================================
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| 231 | * Escape Prefix 0F3Ah-three bytes opcodes
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| 232 | * ==================================================================== */
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| 233 | void __bea_callspec__ Esc_tableA5(PDISASM pMyDisasm)
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| 234 | {
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| 235 | if (!Security(0, pMyDisasm)) return;
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| 236 | GV.EIP_++;
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| 237 | (*pMyDisasm).Instruction.Opcode = *((UInt8*) (UIntPtr)GV.EIP_)+0x0F3A00;
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| 238 | (void) opcode_map4[*((UInt8*) (UIntPtr)GV.EIP_)](pMyDisasm);
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| 239 | }
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