ARM Cortex-M4 - Page 156

The Cortex-M4 Instruction Set
ARM DUI 0553A Copyright © 2010 ARM. All rights reserved. 3-109
ID121610 Non-Confidential
Examples
PKHBT R3, R4, R5 LSL #0 ; Writes bottom halfword of R4 to bottom halfword of
; R3, writes top halfword of R5, unshifted, to top
; halfword of R3
PKHTB R4, R0, R2 ASR #1 ; Writes R2 shifted right by 1 bit to bottom halfword
; of R4, and writes top halfword of R0 to top
; halfword of R4.