Re: libbpf error: unknown register name 'r0' in asm

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‫בתאריך יום ו׳, 9 באוק׳ 2020 ב-21:03 מאת ‪Andrii Nakryiko‬‏
<‪andrii.nakryiko@xxxxxxxxx‬‏>:‬
>
> On Fri, Oct 9, 2020 at 9:06 AM Yaniv Agman <yanivagman@xxxxxxxxx> wrote:
> >
> > Pulling the latest changes of libbpf and compiling my application with it,
> > I see the following error:
> >
> > ../libbpf/src//root/usr/include/bpf/bpf_helpers.h:99:10: error:
> > unknown register name 'r0' in asm
> >                      : "r0", "r1", "r2", "r3", "r4", "r5");
>
> are you including bpf_helpers.h from user-space code? You are using
> recent enough Clang to not run into this problem for -target bpf, so
> this seems like you are including bpf_helpers.h in the context where
> it's not supposed to be included.
>

This happens when I compile the kernel bpf code, not for user-space code

>
> >
> > The commit which introduced this change is:
> > 80c7838600d39891f274e2f7508b95a75e4227c1
> >
> > I'm not sure if I'm doing something wrong (missing include?), or this
> > is a genuine error
> >
> > Yaniv




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