On Thu, Apr 08, 2021 at 10:17:22AM +0000, Barbier, Renaud via Gcc-help wrote: > 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. You'll have to check how the assembler is called. Add "-v" to the gcc command you use to see. You normally should get something like "-a32 -me500 -many -mbig", but you probably get something else (or it should work :-) ) It will also help if you told us the flags you used to configure. Segher
