Encoding:

SPECIAL

000000

0000

R

1

rt

rd

saminus32

DSLR32

111110

6

4

1

5

5

5

6

Format: 

DROTR32 rd, rt, sa

MIPS64 Release 2

Doubleword Rotate Right Plus 32

Purpose:

Doubleword Rotate Right Plus 32

To execute a logical right-rotate of a doubleword by a fixed amount-32 to 63 bits

Description: 

 GPR[rd] = GPR[rt] <= (right) (saminus32+32)

The 64-bit doubleword contents of GPR rt are rotated right; the result is placed in GPR rd. The bit-rotate amount in the range 32 to 63 is specified by saminus32+32.

Restrictions:

Operation: 

s        = 1 || sa   /* 32+saminus32 */
GPR[rd]   = GPR[rt]s-1..0 || GPR[rt]63..s

Exceptions:

Reserved Instruction