typedef struct {
    CARD8 type;
    CARD8 pad;
    CARD16 sequenceNumber B16;
    CARD16 event_type B16;
    CARD16 pad2;
    CARD32 drawable B32;
    CARD32 ust_hi B32;
    CARD32 ust_lo B32;
    CARD32 msc_hi B32;
    CARD32 msc_lo B32;
    CARD32 sbc B32;
} xDRI2BufferSwapComplete;


static Bool DRI2WireToEvent(Display *dpy, XEvent *event, xEvent *wire)
{
      xDRI2BufferSwapComplete *awire = (xDRI2BufferSwapComplete *)wire;
<...>
      aevent->ust = ((CARD64)awire->ust_hi << 32) | awire->ust_lo;
      aevent->msc = ((CARD64)awire->msc_hi << 32) | awire->msc_lo;
      aevent->sbc = ((CARD64)awire->sbc_hi << 32) | awire->sbc_lo;
<...>     
}