Fix the Mod-Reg-R/M parser. EBP cannot be used as a SIB byte base,
instead it's used to mark that the base is an immediate operand.
svn path=/branches/ntvdm/; revision=60944
Index = (SibByte >> 3) & 0x07;
if (Index != FAST486_REG_ESP) Index = State->GeneralRegs[Index].Long;
else Index = 0;
- Base = State->GeneralRegs[SibByte & 0x07].Long;
+
+ if ((SibByte & 0x07) != FAST486_REG_EBP)
+ {
+ /* Use the register a base */
+ Base = State->GeneralRegs[SibByte & 0x07].Long;
+ }
+ else
+ {
+ /* Fetch the base */
+ if (!Fast486FetchDword(State, &Base))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+ }
/* Calculate the address */
ModRegRm->MemoryAddress = Base + Index * Scale;