X32_BIT
const char * const type = (start & X32_BIT) ? "x32" : "x64";
lsb |= X32_BIT;
lsb &= ~X32_BIT;
ret = probe_syscall(0, SYS_GETPID | X32_BIT);
check_for(msb, X32_BIT-64, X32_BIT-1, -ENOSYS);
check_for(msb, -64-X32_BIT, -1-X32_BIT, -ENOSYS);
check_zero(msb, SYS_READ | X32_BIT);
check_zero(msb, SYS_WRITE | X32_BIT);
check_zero(msb, X32_READV | X32_BIT);
check_zero(msb, X32_WRITEV | X32_BIT);
check_enosys(msb, X64_IOCTL | X32_BIT);
check_enosys(msb, X64_READV | X32_BIT);
check_enosys(msb, X64_WRITEV | X32_BIT);
check_for(msb, 0 | X32_BIT, 999 | X32_BIT, -ENOSYS);
0, 1, -1, X32_BIT-1, X32_BIT, X32_BIT-1, -X32_BIT, INT_MAX,