kvisc/vm/in/flags.c

// The OS/K Team licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

#include <in/instrs.h>

//----------------------------------------------------------------------------//

IMPL_START_0(cli)
{
    CHK_SUPERV();
    cr0 &= ~IF;
}
IMPL_END;

IMPL_START_0(sti)
{
    CHK_SUPERV();
    cr0 |= IF;
}
IMPL_END;

//----------------------------------------------------------------------------//

IMPL_START_0(cld)
{
    flg &= ~DF;
}
IMPL_END;

IMPL_START_0(std)
{
    flg |= DF;
}
IMPL_END;

//----------------------------------------------------------------------------//

IMPL_START_0(cmc)
{
    flg = (flg&CF ? flg&~CF : flg|CF);
}
IMPL_END;

IMPL_START_0(clc)
{
    flg &= ~CF;
}
IMPL_END;

IMPL_START_0(stc)
{
    flg |= CF;
}
IMPL_END;

//----------------------------------------------------------------------------//

IMPL_START_1(lodf)
{
    v1 = flg;
}
IMPL_OUT;

IMPL_START_1(stofb)
{
    flg = (flg & ~0xFF) | (v1 & 0xFF);
}
IMPL_END;

//----------------------------------------------------------------------------//