Analog Devices ADSP-BF53x Blackfin Reference page 635

FLUSH
General Form
FLUSH
Syntax
FLUSH [ Preg ] ;
FLUSH [ Preg ++ ] ;
Syntax Terminology
: , ,
Preg P5–0 SP
Instruction Length
In the syntax, comment (a) identifies 16-bit instruction length.
Functional Description
The Data Cache Flush instruction causes the data cache to synchronize
the specified cache line with higher levels of memory. This instruction
selects the cache line corresponding to the effective address contained in
the P-register. If the cached data line is dirty, the instruction writes the
line out and marks the line clean in the data cache. If the specified data
cache line is already clean or the cache does not contain the address in the
P-register, this instruction performs no action, like a
This instruction does not cause address exception violations. If a protec-
tion violation associated with the address occurs, the instruction acts as a
and does not cause a protection violation exception.
NOP
Options
The instruction can post-increment the line pointer by the cache line size.
ADSP-BF53x/BF56x Blackfin Processor Programming Reference
/* indexed (a) */
/* indexed, post increment (a) */
FP
Cache Control
.
NOP
17-5