IAR Product Updates
Product:IAR Embedded Workbench for Renesas RL78
Version:3.10
Release date:September 19, 2017

Long long multiplication routine patch

Published February 8, 2021.

This patch solves the following problem:

[EWRL78-701] For the s3 core, the long long assembler support routine __Mul64 makes use of the MACHU instruction, but does not save the MACR result registers as required. This can cause problems if an interrupt that also uses _Mul64 occurs while the _Mul64 routine is being executed.

Install EWRL78 3.10

Published September 15, 2017.