iOS app退出asm_exit

app退出，且无调用栈

static __attribute__((always_inline)) void bad_address() {
#ifdef __arm64__
    __asm__("mov x0, #0\n"
            "mov sp, x0\n"
            "mov lr, x0\n"
            "ldr x9, =0xb5a98000\n"
            "br x9");
#endif
}