r_r1
*rval2 = r->r_r1;
rp->r_r0, rp->r_r1, 0, 0);
*rval2 = r->r_r1 & (uint32_t)0xffffffffu;
*rval2 = r->r_r1;
lwptoregs(lwp)->r_r1 = v2;
rval.r_val2 = rp->r_r1;
rp->r_r1 = rval2;
rp->r_r1 = rval2;
ASSERT(rp->r_r1 == 0 && error == 0);