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ROR (register)

Rotate Right (register).

This instruction is an alias of RORV.

The equivalent instruction is RORV Wd, Wn, Wm.

Syntax

ROR Wd, Wn, Wm ; 32-bit

ROR Xd, Xn, Xm ; 64-bit

Where:

Wd
Is the 32-bit name of the general-purpose destination register.
Wn
Is the 32-bit name of the first general-purpose source register.
Wm
Is the 32-bit name of the second general-purpose source register holding a shift amount from 0 to 31 in its bottom 5 bits.
Xd
Is the 64-bit name of the general-purpose destination register.
Xn
Is the 64-bit name of the first general-purpose source register.
Xm
Is the 64-bit name of the second general-purpose source register holding a shift amount from 0 to 63 in its bottom 6 bits.

Operation

Rotate Right (register) provides the value of the contents of a register rotated by a variable number of bits. The bits that are rotated off the right end are inserted into the vacated bit positions on the left. The remainder obtained by dividing the second source register by the data size defines the number of bits by which the first source register is right-shifted.

Rd = ROR(Rn, Rm), where R is either W or X.

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