• Avi Kivity's avatar
    Add support for 128-bit arithmetic · b7cd3db6
    Avi Kivity authored
    The memory API supports 64-bit buses (e.g. PCI).  A size on such a bus cannot
    be represented with a 64-bit data type, if both 0 and the entire address
    space size are to be represented.  Futhermore, any address arithemetic may
    overflow and return unexpected results.
    Introduce a 128-bit signed integer type for use in such cases.  Addition,
    subtraction, and comparison are the only operations supported.
    Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
int128.h 1.87 KB