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[SOFT386]

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Implement opcode group 0x8F.


svn path=/branches/ntvdm/; revision=60451
This commit is contained in:
Aleksandar Andrejevic 2013-09-29 15:52:20 +00:00
parent 9331ef28b9
commit 87a7896249
1 changed files with 52 additions and 2 deletions
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54
lib/soft386/opgroups.c
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@ -175,8 +175,58 @@ SOFT386_OPCODE_HANDLER(Soft386OpcodeGroup83)
SOFT386_OPCODE_HANDLER(Soft386OpcodeGroup8F)
{
UNIMPLEMENTED;
return FALSE; // TODO: NOT IMPLEMENTED
ULONG Value;
SOFT386_MOD_REG_RM ModRegRm;
BOOLEAN OperandSize, AddressSize;
OperandSize = AddressSize = State->SegmentRegs[SOFT386_REG_CS].Size;
if (State->PrefixFlags & SOFT386_PREFIX_OPSIZE)
{
/* The OPSIZE prefix toggles the size */
OperandSize = !OperandSize;
}
if (State->PrefixFlags & SOFT386_PREFIX_ADSIZE)
{
/* The ADSIZE prefix toggles the size */
AddressSize = !AddressSize;
}
if (!Soft386ParseModRegRm(State, AddressSize, &ModRegRm))
{
/* Exception occurred */
return FALSE;
}
if (ModRegRm.Register != 0)
{
/* Invalid */
Soft386Exception(State, SOFT386_EXCEPTION_UD);
return FALSE;
}
/* Pop a value from the stack */
if (!Soft386StackPop(State, &Value))
{
/* Exception occurred */
return FALSE;
}
if (OperandSize)
{
return Soft386WriteModrmDwordOperands(State,
&ModRegRm,
FALSE,
Value);
}
else
{
return Soft386WriteModrmWordOperands(State,
&ModRegRm,
FALSE,
LOWORD(Value));
}
}
SOFT386_OPCODE_HANDLER(Soft386OpcodeGroupC0)