dumpmem
dumpmem(((int *)&rp) - 1, sbytes, 0);
dumpmem((int *)rp[SP], sbytes, 1);
static void dumpmem(int *, int, int);
dumpmem((int *)tf->tf_regs[SP], sbytes, 1);
static void dumpmem(int *, int, int);
dumpmem(((int *)(void *)&tf)-1, sbytes, 0);