Thanks Henri. Just found out that if I remove the argument -mcpu=8540 from the arch/powerpc/Makefile then the mtcrf instructions is used instead and the system boots. I will have to dig in the compiler to see what the consequence of this and if this is a possible solution. > -----Original Message----- > From: Gcc-help [mailto:gcc-help-bounces@xxxxxxxxxxx] On Behalf Of Henri > Cloetens > Sent: 08 April 2021 11:08 > To: gcc-help@xxxxxxxxxxx > Subject: Re: gcc 10.2.0 mtocrf instructions on Freescale P1014 (ppc) > > > > [**EXTERNAL SOURCE**]:Please verify the source before clicking link or > opening attachment. > > Hello Renaud, > > Not in the details of the PowerPc. To fix this, you need to fix the > compiler. > 1. Download the source code of the gcc compiler you want to use. > 2. Go to the directory > gcc/config/rs6000 > 3. Search in the .md-files for the offending instruction (mtcrf) > (In the gcc9.2.0 there are total 20 cases). > 4. Repair the relevant cases. > 5. Rebuilt the compiler. > 6. Run the test cases. > > On the content, these instructions are not the same. I consulted on this > subject > the PowerISA version 2.07b. "mtorf" is move to one condition register field. > "mtrf" is move to the WHOLE condition register. > In both PowerISA version 2.07b and PowerISA version 3.0b, both instructions > are flagged obsolete. > > Best Regards, > > Henri. >
