Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet

Product codes

ATSAM4S-WPIR-RD

157

SAM4S Series [DATASHEET]

Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14

In these instructions:



Do not use SP and do not use PC.



RdHi

and RdLo must be different registers.

Examples

SMULBT

R0, R4, R5

; Multiplies the bottom halfword of R4 with the

; top halfword of R5, multiplies results and

; writes to R0

SMULBB R0, R4, R5 ; Multiplies the bottom halfword of R4 with the

; bottom halfword of R5, multiplies results and

; writes to R0

SMULTT R0, R4, R5 ; Multiplies the top halfword of R4 with the top

; halfword of R5, multiplies results and writes

; to R0

SMULTB R0, R4, R5 ; Multiplies the top halfword of R4 with the

; bottom halfword of R5, multiplies results and

; and writes to R0

SMULWT

R4, R5, R3

; Multiplies R5 with the top halfword of R3,

; extracts top 32 bits and writes to R4

SMULWB R4, R5, R3 ; Multiplies R5 with the bottom halfword of R3,

; extracts top 32 bits and writes to R4.