16.79 EXTR

Extract register.

This instruction is used by the alias ROR (immediate).

Syntax

EXTR Wd, Wn, Wm, #lsb ; 32-bit

EXTR Xd, Xn, Xm, #lsb ; 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.
lsb

Depends on the instruction variant:

32-bit general registers
Is the least significant bit position from which to extract, in the range 0 to 31.
64-bit general registers
Is the least significant bit position from which to extract, in the range 0 to 63.
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.

Usage

Extract register extracts a register from a pair of registers.

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