Docs » Autodocs » exec.library » CacheControl
CacheControl - Instruction & data cache control
oldBits = CacheControl(cacheBits,cacheMask)
D0 D0 D1
ULONG CacheControl(ULONG,ULONG);
This function provides global control of any instruction or data
caches that may be connected to the system. All settings are
global -- per task control is not provided.
The action taken by this function will depend on the type of
CPU installed. This function may be patched to support external
caches, or different cache architectures. In all cases the function
will attempt to best emulate the provided settings. Use of this
function may save state specific to the caches involved.
The list of supported settings is provided in the exec/execbase.i
include file. The bits currently defined map directly to the Motorola
68030 CPU CACR register. Alternate cache solutions may patch into
the Exec cache functions. Where possible, bits will be interpreted to
have the same meaning on the installed cache.
cacheBits - new values for the bits specified in cacheMask.
cacheMask - a mask with ones for all bits to be changed.
oldBits - the complete prior values for all settings.
As a side effect, this function clears all caches.
"exec/execbase.i", CacheClearU(), CacheClearE()
|
