#include <nitro/os.h>
void DC_TouchRange( const void* startAddr, u32 nBytes );
startAddr | Lowest address in the region to be preloaded |
nBytes | Number of bytes of the region to be preloaded |
None.
Instructs the CPU to pre-load the data in the specified memory region into data cache. startAddr
is rounded down to the closest 32-byte boundary. startAddr
+ nBytes
is rounded up to the closest 32-byte boundary.
This function executes a pld
command, but the specification of the ARM946E-S is such that even if it recognizes that pld
command, it will do nothing. Therefore, this function doesn't actually do anything.
This function is maintained in order to preserve compatibility with older program codes.
Looks ahead with the pld
command. This function divides the specified range into cache-line units and repeats its operation. Thus the amount of time it takes is proportional to the size of the range.
2005/12/22 Added a description that the pld
command does nothing.
2005/11/14 Changed the startAddr
type to const void*
.
2005/04/19 Added a description that the amount of time required is proportional to the range size.
2003/12/22 Initial version.