kvisc/vm/in/trap.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(trap)
{
    if (v1 > 255)
        _except(ctx, E_ILL, "TRAP number greater than 255");

    _except(ctx, v1 + 256, "TRAP instruction");
}
IMPL_END;

IMPL_START_0(into)
{
    if (R(RFX) & OF)
        _except(ctx, E_OVF, "INTO instruction with FLG.OF=1");
}
IMPL_END;

// XXX more checks

IMPL_START_0(iret)
{
    trace("\nReturning from exception #%ld\n\n", R(R11));

    R(RIP) = R(R13);
    rfs_current_idx = R(R12);
    ctx->rf = rfs[R(R12)];
}
IMPL_END;