- Android的bionic中提供了下面的函数
__bionic_clear_pac_bits
inline uintptr_t __bionic_clear_pac_bits(uintptr_t ptr) {
#if defined(__aarch64__)register uintptr_t x30 __asm("x30") = ptr;// This is a NOP on pre-Armv8.3-A architectures.asm("xpaclri" : "+r"(x30));return x30;
#elsereturn ptr;
#endif
}