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[SOFT386]
Implement MOV for segment registers. svn path=/branches/ntvdm/; revision=60398
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@ -4076,12 +4076,56 @@ SOFT386_OPCODE_HANDLER(Soft386OpcodeMovModrm)
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SOFT386_OPCODE_HANDLER(Soft386OpcodeMovStoreSeg)
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{
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// TODO: NOT IMPLEMENTED
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UNIMPLEMENTED;
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BOOLEAN OperandSize, AddressSize;
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SOFT386_MOD_REG_RM ModRegRm;
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OperandSize = AddressSize = State->SegmentRegs[SOFT386_REG_CS].Size;
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/* Make sure this is the right instruction */
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ASSERT(Opcode == 0x8C);
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if (State->PrefixFlags & SOFT386_PREFIX_ADSIZE)
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{
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/* The ADSIZE prefix toggles the address size */
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AddressSize = !AddressSize;
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}
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if (State->PrefixFlags & SOFT386_PREFIX_OPSIZE)
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{
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/* The OPSIZE prefix toggles the operand size */
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OperandSize = !OperandSize;
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}
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/* Get the operands */
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if (!Soft386ParseModRegRm(State, AddressSize, &ModRegRm))
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{
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/* Exception occurred */
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return FALSE;
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}
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if (ModRegRm.Register >= SOFT386_NUM_SEG_REGS)
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{
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/* Invalid */
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Soft386Exception(State, SOFT386_EXCEPTION_UD);
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return FALSE;
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}
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if (OperandSize)
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{
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return Soft386WriteModrmDwordOperands(State,
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&ModRegRm,
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FALSE,
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State->SegmentRegs[ModRegRm.Register].Selector);
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}
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else
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{
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return Soft386WriteModrmWordOperands(State,
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&ModRegRm,
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FALSE,
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State->SegmentRegs[ModRegRm.Register].Selector);
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}
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}
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SOFT386_OPCODE_HANDLER(Soft386OpcodeLea)
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{
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SOFT386_MOD_REG_RM ModRegRm;
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@ -4139,12 +4183,66 @@ SOFT386_OPCODE_HANDLER(Soft386OpcodeLea)
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SOFT386_OPCODE_HANDLER(Soft386OpcodeMovLoadSeg)
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{
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// TODO: NOT IMPLEMENTED
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UNIMPLEMENTED;
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BOOLEAN OperandSize, AddressSize;
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SOFT386_MOD_REG_RM ModRegRm;
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OperandSize = AddressSize = State->SegmentRegs[SOFT386_REG_CS].Size;
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/* Make sure this is the right instruction */
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ASSERT(Opcode == 0x8E);
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if (State->PrefixFlags & SOFT386_PREFIX_ADSIZE)
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{
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/* The ADSIZE prefix toggles the address size */
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AddressSize = !AddressSize;
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}
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if (State->PrefixFlags & SOFT386_PREFIX_OPSIZE)
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{
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/* The OPSIZE prefix toggles the operand size */
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OperandSize = !OperandSize;
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}
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/* Get the operands */
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if (!Soft386ParseModRegRm(State, AddressSize, &ModRegRm))
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{
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/* Exception occurred */
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return FALSE;
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}
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if (ModRegRm.Register >= SOFT386_NUM_SEG_REGS)
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{
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/* Invalid */
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Soft386Exception(State, SOFT386_EXCEPTION_UD);
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return FALSE;
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}
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if (OperandSize)
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{
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ULONG Dummy, Selector;
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if (!Soft386ReadModrmDwordOperands(State, &ModRegRm, &Dummy, &Selector))
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{
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/* Exception occurred */
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return FALSE;
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}
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return Soft386LoadSegment(State, ModRegRm.Register, LOWORD(Selector));
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}
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else
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{
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USHORT Dummy, Selector;
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if (!Soft386ReadModrmWordOperands(State, &ModRegRm, &Dummy, &Selector))
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{
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/* Exception occurred */
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return FALSE;
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}
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return Soft386LoadSegment(State, ModRegRm.Register, Selector);
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}
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}
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SOFT386_OPCODE_HANDLER(Soft386OpcodeCwde)
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{
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BOOLEAN Size = State->SegmentRegs[SOFT386_REG_CS].Size;
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