kvisc/vm/in/mov.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_1(lea)
{
    v1 = p2->addr;
}
IMPL_OUT;

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

IMPL_START_2_ONLY(mov)
{
    v1 = v2;
}
IMPL_OUT;

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

IMPL_START_2_ONLY(movsxb)
{
    v1 = (ulong)(long)(char)(v2 & 0xFF);
}
IMPL_OUT;

IMPL_START_2_ONLY(movsxw)
{
    v1 = (ulong)(long)(short)(v2 & 0xFFFF);
}
IMPL_OUT;

IMPL_START_2_ONLY(movsxl)
{
    v1 = (ulong)(long)(int)(v2 & 0xFFFFFFFF);
}
IMPL_OUT;

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

IMPL_START_1(movzx)
{
    DECVZX(v2, p2);
    v1 = v2;
}
IMPL_OUT;

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

IMPL_START_2(xchg)
{
    ulong t = v1;
    v1 = v2;
    v2 = t;
}
IMPL_OUT_2;


IMPL_START_2(cmpxchg)
{
    if (rax == v1) {
        rfx |= ZF;
        v1 = v2;
    }

    else {
        rfx &= ~ZF;
        rax = v1;
    }
}
IMPL_OUT;

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

IMPL_START_3(rotl)
{
    ulong tmp = v1;
    v1 = v2;
    v2 = v3;
    v3 = tmp;
}
IMPL_OUT_3;

IMPL_START_3(rotr)
{
    ulong tmp = v3;
    v3 = v2;
    v2 = v1;
    v1 = tmp;
}
IMPL_OUT_3;

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

IMPL_START_2_ONLY(ldarg)
{
    if (v2 < 16)
        v1 = R(AX0 + v2);

    else
        _except(ctx, E_ILL, "ldarg: value out of range: %lu", v2);
}
IMPL_OUT;

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