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kvisc/vm/in/mov.c

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// The OS/K Team licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
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#include <in/instrs.h>
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IMPL_COND(lea);
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IMPL_COND(mov);
IMPL_COND(movb);
IMPL_COND(movw);
IMPL_COND(movl);
IMPL_COND(movt);
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IMPL_COND(xchg);
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IMPL_COND(cmpxchg);
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/*
IMPL_COND(xchgb);
IMPL_COND(xchgw);
IMPL_COND(xchgl);
IMPL_COND(xchgt);
*/
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//
// Movement instructions
//
IMPL_START_2(mov)
{
v1 = v2;
}
IMPL_OUT;
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IMPL_START_2(movb)
{
v1 = (v1 & 0xFFFFFFFFFFFFFF00)
| (v2 & 0x00000000000000FF);
}
IMPL_OUT;
IMPL_START_2(movw)
{
v1 = (v1 & 0xFFFFFFFFFFFF0000)
| (v2 & 0x000000000000FFFF);
}
IMPL_OUT;
IMPL_START_2(movl)
{
v1 = (v1 & 0xFFFFFFFF00000000)
| (v2 & 0x00000000FFFFFFFF);
}
IMPL_OUT;
IMPL_START_2(movt)
{
v1 = (v1 & 0xFFFF000000000000)
| (v2 & 0x0000FFFFFFFFFFFF);
}
IMPL_OUT;
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IMPL_START_2(xchg)
{
ulong t = v1;
v1 = v2;
v2 = t;
}
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IMPL_OUT_2;
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IMPL_START_1(lea)
{
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v1 = (p2->type == A_REG ? R(p2->val) : p2->val) + p2->off;
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}
IMPL_OUT;
IMPL_START_1(gcs)
{
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v1 = cr1;
}
IMPL_OUT;
IMPL_START_2(cmpxchg)
{
if (rax == v1) {
flg |= ZF;
v1 = v2;
}
else {
flg &= ~ZF;
rax = v1;
}
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}
IMPL_OUT;