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[SOFT386]

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Implement ARPL.


svn path=/branches/ntvdm/; revision=60050
This commit is contained in:
Aleksandar Andrejevic 2013-09-12 00:05:23 +00:00
parent 76b87315a8
commit a8c1104f57
1 changed files with 39 additions and 3 deletions
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42
lib/soft386/opcodes.c
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@ -3583,10 +3583,46 @@ SOFT386_OPCODE_HANDLER(Soft386OpcodeBound)
SOFT386_OPCODE_HANDLER(Soft386OpcodeArpl)
{
// TODO: NOT IMPLEMENTED
UNIMPLEMENTED;
USHORT FirstValue, SecondValue;
SOFT386_MOD_REG_RM ModRegRm;
return FALSE;
if (!(State->ControlRegisters[SOFT386_REG_CR0] & SOFT386_CR0_PE)
|| State->PrefixFlags)
{
/* No prefixes allowed, protected mode only */
Soft386Exception(State, SOFT386_EXCEPTION_UD);
return FALSE;
}
/* Get the operands */
if (!Soft386ReadModrmWordOperands(State,
&ModRegRm,
&FirstValue,
&SecondValue))
{
/* Exception occurred */
return FALSE;
}
/* Check if the RPL needs adjusting */
if ((SecondValue & 3) < (FirstValue & 3))
{
/* Adjust the RPL */
SecondValue &= ~3;
SecondValue |= FirstValue & 3;
/* Set ZF */
State->Flags.Zf = TRUE;
/* Write back the result */
return Soft386WriteModrmWordOperands(State, &ModRegRm, FALSE, SecondValue);
}
else
{
/* Clear ZF */
State->Flags.Zf = FALSE;
return TRUE;
}
}
SOFT386_OPCODE_HANDLER(Soft386OpcodePushImm)