You copied the Doc URL to your clipboard.

SXTB

Signed Extend Byte.

This instruction is an alias of SBFM.

The equivalent instruction is SBFM Wd, Wn, #0, #7.

Syntax

SXTB Wd, Wn ; 32-bit general registers

SXTB Xd, Wn ; 64-bit general registers

Where:

Wd
Is the 32-bit name of the general-purpose destination register.
Xd
Is the 64-bit name of the general-purpose destination register.
Wn
Is the 32-bit name of the general-purpose source register.

Usage

Signed Extend Byte extracts an 8-bit value from a register, sign-extends it to the size of the register, and writes the result to the destination register.