ARM_SYNC_ICACHE(2) System Calls Manual (ARM) ARM_SYNC_ICACHE(2)
arm_sync_icache -- clean the CPU data cache and flush the CPU instruction
ARM Architecture Library (libarm, -larm)
arm_sync_icache(u_int addr, int len);
arm_sync_icache() will make sure that all the entries in the processor
instruction cache are synchronized with main memory and that any data in
a write back cache has been cleaned. Some ARM processors (e.g. SA110)
have separate instruction and data caches thus any dynamically generated
or modified code needs to be written back from any data caches to main
memory and the instruction cache needs to be synchronized with main
On such processors arm_sync_icache() will clean the data cache and
invalidate the processor instruction cache to force reloading from main
memory. On processors that have a shared instruction and data cache and
have a write through cache (e.g. ARM6) no action needs to be taken.
The routine takes a start address addr and a length len to describe the
area of memory that needs to be cleaned and synchronized.
arm_sync_icache() will never fail so will always return 0.
StrongARM Data Sheet
NetBSD 6.1.5 March 29, 2002 NetBSD 6.1.5