On Fri, May 04, 2018 at 01:45:35PM +0200, Mathieu Malaterre wrote: > $ gcc -static -ffreestanding -nostartfiles -s -o tiny tiny.c > $ ./tiny > Segmentation fault > > What do I need to pay attention to on ppc to build tiny executable > using the _start function ? You need to set up r13. This is powerpc64? (32-bit works fine for me, but you may be using a different ABI, you didn't tell. I'm on Linux). You also should align r1 and set up a terminating stack frame, and set LR to 0. Look what glibc does :-) Segher
