16.155 SXTW

Sign Extend Word.

This instruction is an alias of SBFM.

The equivalent instruction is SBFM Xd, Xn, #0, #31.

Syntax

SXTW Xd, Wn

Where:

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

Operation

Sign Extend Word sign-extends a word to the size of the register, and writes the result to the destination register.

Xd = SignExtend(Wn<31:0>).

Non-ConfidentialPDF file icon PDF versionDUI0801J
Copyright © 2014–2017, 2019 Arm Limited or its affiliates. All rights reserved.