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mirror of https://gitlab.os-k.eu/os-k-team/kvisc.git synced 2023-08-25 14:05:46 +02:00
kvisc/vm/in/flags.c
2019-06-23 12:40:18 +02:00

72 lines
1.1 KiB
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;
//----------------------------------------------------------------------------//