NAME
        CacheClearU - User callable simple cache clearing (V37)

   SYNOPSIS
        CacheClearU()

        void CacheClearU(void);

   FUNCTION
        flush out the contents of any cpu instruction and data caches.
        If dirty data cache lines are present, push them to memory first.

        Caches must be cleared after *any* operation that could cause
        invalid or stale data.  The most common cases are DMA and modifying
        instructions using the processor.  See the cachecleare() autodoc
        for a more complete description.

        Some examples of when the cache needs clearing:
                        Self modifying code
                        Building Jump tables
                        Run-time code patches
                        Relocating code for use at different addresses.
                        Loading code from disk

   SEE ALSO
        exec/execbase.i, cachecontrol(), cachecleare()