kvisc/pc/instrs/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 "instrs.h"
#include "arch_i.h"

IMPL_COND(mov);
IMPL_COND(lea);
IMPL_COND(xchg);
IMPL_COND(cmpxchg);

//
// Movement instructions
//

IMPL_START_2(mov)
{
    v1 = v2;
}
IMPL_OUT;

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

IMPL_START_1(lea)
{
    v1 = (p2->type == A_REG ? R(p2->val) : p2->val) + p2->off;
}
IMPL_OUT;

IMPL_START_1(gcs)
{
    v1 = cr1;
}
IMPL_OUT;

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

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