Analog Devices ADSP-BF53x Blackfin Reference page 507

ROT (Rotate)
General Form
dest_reg = ROT src_reg BY rotate_magnitude
accumulator_new = ROT accumulator_old BY rotate_magnitude
Syntax
Constant Rotate Magnitude
Dreg = ROT Dreg BY imm6 ;
A0 = ROT A0 BY imm6 ;
A1 = ROT A1 BY imm6 ;
Registered Rotate Magnitude
Dreg = ROT Dreg BY Dreg_lo ;
A0 = ROT A0 BY Dreg_lo ;
A1 = ROT A1 BY Dreg_lo ;
Syntax Terminology
:
Dreg R7–0
: 6-bit signed field, with a range of –32 through +31
imm6
Instruction Length
In the syntax, comment (b) identifies 32-bit instruction length.
Functional Description
The Rotate instruction rotates a register through the
tance and direction. The
first value rotated into the register is the initial value of the
ADSP-BF53x/BF56x Blackfin Processor Programming Reference
/* (b) */
/* (b) */
/* (b) */
/* (b) */
/* (b) */
*/ (b) */
bit is in the rotate chain. Consequently, the
CC
Shift/Rotate Operations
bit a specified dis-
CC
bit.
CC
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