register vm_offset_t pe = pa + PAGE_SIZE;
register paddr_t pe = pa + PAGE_SIZE;
pmap_zero_page(pa)	register vm_offset_t pa;{	extern int dcache_line_mask;	register int psw;	register vm_offset_t pe = pa + PAGE_SIZE;#ifdef PMAPDEBUG	if (pmapdebug & PDB_FOLLOW)		printf("pmap_zero_page(%x)\n", pa);#endif	pmap_clear_pv(pa, NULL);	rsm(PSW_I,psw);	while (pa < pe) {		__asm volatile("stwas,ma %%r0,4(%0)\n\t"			       : "=r" (pa):: "memory");		if (!(pa & dcache_line_mask))			__asm volatile("rsm %1, %%r0\n\t"				       "fdc %2(%0)\n\t"				       "ssm %1, %%r0"				       : "=r" (pa): "i" (PSW_D), "r" (-4)				       : "memory");	}	sync_caches();	mtsm(psw);}