RIP
COPY(RIP);
COPY(RIP);
case RIP:
[RIP >> 3] = HOST_IP,
case RIP:
DEFINE_LONGS(HOST_IP, RIP);
uc->uc_mcontext.gregs[RIP] = (uintptr_t)&make_stack2;
uc->uc_mcontext.gregs[RIP] = stack_max_addr - PAGE_SIZE;
uc->uc_mcontext.gregs[RIP] -= PAGE_SIZE;
if (uc->uc_mcontext.gregs[RIP] == stack_min_addr) {
unsigned long rip = uc->uc_mcontext.gregs[RIP];