u_register_t
p = (register_t *)((u_register_t)p & ~0xF); /* Align to 16 bytes. */
p = (register_t *)((u_register_t)p - sizeof(struct sigframe));
pa = (pa << 32) | (u_register_t)mfspr(SPR_MCAR);
sa->args[i] = ((u_register_t *)(params))[i] &
sa->args[i] = ((u_register_t *)(params))[i];
u_register_t c; /* 32 bit on i386, 64 bit on alpha */
printf("%c%#jx", c, (uintmax_t)(u_register_t)*i); \