NULL, // TODO: OPCODE 0xB5 NOT SUPPORTED
NULL, // TODO: OPCODE 0xB6 NOT SUPPORTED
NULL, // TODO: OPCODE 0xB7 NOT SUPPORTED
- NULL, // TODO: OPCODE 0xB8 NOT SUPPORTED
- NULL, // TODO: OPCODE 0xB9 NOT SUPPORTED
- NULL, // TODO: OPCODE 0xBA NOT SUPPORTED
- NULL, // TODO: OPCODE 0xBB NOT SUPPORTED
- NULL, // TODO: OPCODE 0xBC NOT SUPPORTED
- NULL, // TODO: OPCODE 0xBD NOT SUPPORTED
- NULL, // TODO: OPCODE 0xBE NOT SUPPORTED
- NULL, // TODO: OPCODE 0xBF NOT SUPPORTED
+ Soft386OpcodeMovRegImm,
+ Soft386OpcodeMovRegImm,
+ Soft386OpcodeMovRegImm,
+ Soft386OpcodeMovRegImm,
+ Soft386OpcodeMovRegImm,
+ Soft386OpcodeMovRegImm,
+ Soft386OpcodeMovRegImm,
+ Soft386OpcodeMovRegImm,
NULL, // TODO: OPCODE 0xC0 NOT SUPPORTED
NULL, // TODO: OPCODE 0xC1 NOT SUPPORTED
NULL, // TODO: OPCODE 0xC2 NOT SUPPORTED
return TRUE;
}
+
+BOOLEAN
+FASTCALL
+Soft386OpcodeMovRegImm(PSOFT386_STATE State, UCHAR Opcode)
+{
+ BOOLEAN Size = State->SegmentRegs[SOFT386_REG_CS].Size;
+
+ /* Make sure this is the right instruction */
+ ASSERT((Opcode & 0xF8) == 0xB8);
+
+ if (State->PrefixFlags == SOFT386_PREFIX_OPSIZE)
+ {
+ /* The OPSIZE prefix toggles the size */
+ Size = !Size;
+ }
+ else if (State->PrefixFlags != 0)
+ {
+ /* Invalid prefix */
+ Soft386Exception(State, SOFT386_EXCEPTION_UD);
+ return FALSE;
+ }
+
+ if (Size)
+ {
+ ULONG Value;
+
+ /* Fetch the dword */
+ if (!Soft386FetchDword(State, &Value))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+
+ /* Store the value in the register */
+ State->GeneralRegs[Opcode & 0x07].Long = Value;
+ }
+ else
+ {
+ USHORT Value;
+
+ /* Fetch the word */
+ if (!Soft386FetchWord(State, &Value))
+ {
+ /* Exception occurred */
+ return FALSE;
+ }
+
+ /* Store the value in the register */
+ State->GeneralRegs[Opcode & 0x07].LowWord = Value;
+ }
+
+ return TRUE;
+}