Analog Devices ADSP-BF53x Blackfin Reference page 508

Instruction Overview
Rotation shifts all the bits either right or left. Each bit that rotates out of
the register (the LSB for rotate right or the MSB for rotate left) is stored in
the bit, and the
CC
opposite end of the register.
If
D-register:
CC bit:
Rotate left 1 bit
D-register:
CC bit:
Rotate left 1 bit again
D-register:
CC bit:
If
D-register:
CC bit:
Rotate right 1 bit
D-register:
CC bit:
Rotate right 1 bit again
D-register:
CC bit:
14-22 ADSP-BF53x/BF56x Blackfin Processor Programming Reference
bit is stored into the bit vacated by the rotate on the
CC
31
1010 1111 0000 0000 0000 0000 0001 1010
N ("1" or "0")
31
0101 1110 0000 0000 0000 0000 0011 010N
1
31
1011 1100 0000 0000 0000 0000 0110 10N1
0
31
1010 1111 0000 0000 0000 0000 0001 1010
N ("1" or "0")
31
N101 0111 1000 0000 0000 0000 0000 1101
0
31
0N10 1011 1100 0000 0000 0000 0000 0110
1
0
0
0
0
0
0