SOFT386_OPCODE_HANDLER(Soft386OpcodePushFlags)
{
- // TODO: NOT IMPLEMENTED
- UNIMPLEMENTED;
+ BOOLEAN Size = State->SegmentRegs[SOFT386_REG_CS].Size;
- return FALSE;
+ if (State->PrefixFlags & SOFT386_PREFIX_LOCK)
+ {
+ /* Invalid prefix */
+ Soft386Exception(State, SOFT386_EXCEPTION_UD);
+ return FALSE;
+ }
+
+ if (State->PrefixFlags & SOFT386_PREFIX_OPSIZE)
+ {
+ /* This OPSIZE prefix toggles the size */
+ Size = !Size;
+ }
+
+ /* Check for VM86 mode when IOPL is not 3 */
+ if (State->Flags.Vm && (State->Flags.Iopl != 3))
+ {
+ /* Call the VM86 monitor */
+ Soft386ExceptionWithErrorCode(State, SOFT386_EXCEPTION_GP, 0);
+ return FALSE;
+ }
+
+ /* Push the flags */
+ if (Size) return Soft386StackPush(State, State->Flags.Long);
+ else return Soft386StackPush(State, LOWORD(State->Flags.Long));
}
SOFT386_OPCODE_HANDLER(Soft386OpcodePopFlags)