Push|Pop Stacks /Flush Cache - Analog Devices ADSP-2106x SHARC User Manual

Miscellaneous
A Instruction Set Reference
push|pop stacks / flush cache
Syntax:
PUSH LOOP ,
POP
Function:
Pushes or pops the loop address and loop counter stacks, the status stack,
and/or the PC stack, and/or clear the instruction cache. Any of these
options may be combined in a single instruction.
Flushing the instruction cache invalidates all entries in the cache, with no
latency—the cache is cleared at the end of the cycle.
Examples:
PUSH LOOP, PUSH STS;
POP PCSTK, FLUSH CACHE;
Opcode:
47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
0 0 0 1 0 1 1 1
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LPU pushes the loop stacks. LPO pops the loop stacks. SPU pushes the
status stack. SPO pops the status stack. PPU pushes the PC stack. PPO
pops the PC stack. FC causes a cache flush.
A – 50
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PUSH STS , PUSH PCSTK ,
POP POP
L L S S P P F
P P P P P P C
U O U O U O
FLUSH CACHE ;