ARCH_GET_GS
case ARCH_GET_GS: {
case ARCH_GET_GS:
if (syscall(SYS_arch_prctl, ARCH_GET_GS, &base) != 0)
if (syscall(SYS_arch_prctl, ARCH_GET_GS, &arch_base) != 0)
syscall(SYS_arch_prctl, ARCH_GET_GS, &saved_base);
syscall(SYS_arch_prctl, ARCH_GET_GS, &new_base);