CacheClearU

User callable simple cache clearing (V37)

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
  
  

exec/execbase.i, exec/execbase.h, CacheControl(), CacheClearE()