STACK_ALIGN
fp = (struct netbsd32_sigframe_siginfo *)STACK_ALIGN(fp - 1, (8 - 1));
fp = (void *)STACK_ALIGN(fp, STACK_ALIGNBYTES);
fp = (struct sigframe_siginfo *)STACK_ALIGN(fp, STACK_ALIGNBYTES);
stack = (u_long)STACK_ALIGN(stack, 63);
ucp = (void *)STACK_ALIGN(ucp, STACK_ALIGNBYTES);