topic Re: MPC5744 MSR Register Reading in C Program in S32 Design Studio

MPC5744 MSR Register Reading in C Program

juliusjai — Thu, 08 Aug 2019 07:11:29 GMT

Hi,

Does anybody know how to implement in C program the reading of MPC5744 - Machine State Register (MSR) register?

I need this for the Critical Section implementation.

Thanks in advance.

Cheers!

Julius

alexanderfedoto — Thu, 08 Aug 2019 18:26:26 GMT

Have you tried asm("mfmsr 4") so that register 4 will hold MSR value ?

You have to use extended inline assembler syntax to read the value in C variable (Using the GNU Compiler Collection (GCC): Extended Asm )

juliusjai — Fri, 30 Aug 2019 12:02:55 GMT

Hi Alex,

Thanks for the hint.

I'll try.