SGSHIFT
#define VA_VSEG(va) (((unsigned int)(va) >> SGSHIFT) & 63)
? (((int)(vr) << RGSHIFT) + ((int)(vs) << SGSHIFT)) \
: ((((int)(vr) << (RGSHIFT+2)) >> 2) + ((int)(vs) << SGSHIFT)))
i = (baseoff + len + SGOFSET) >> SGSHIFT;
i = (baseoff + len + SGOFSET) >> SGSHIFT;
zseg = (((p + NBPSG - 1) & ~SGOFSET) - KERNBASE) >> SGSHIFT;
tva = vs << SGSHIFT;
nseg = (DVMA_MAPLEN + NBPSG - 1) >> SGSHIFT;
#define VA_VSEG(va) (((unsigned int)(va) >> SGSHIFT) & 63)