ASI_DMMU
stxa(PHYSICAL_WATCHPOINT, ASI_DMMU, addr);
stxa(VIRTUAL_WATCHPOINT, ASI_DMMU, addr);
: : "r" (ctx), "r" (CTX_SECONDARY), "n" (ASI_DMMU)
dsfsr = ldxa(SFSR, ASI_DMMU);
dsfar = ldxa(SFAR, ASI_DMMU);