Why is _dl_relocate_static_pie linked into crt1.o?

[H.J. Lu]

On Thu, Jul 5, 2018 at 4:51 AM, Florian Weimer <fweimer@redhat.com> wrote:
> I see this:
>
> “
> $ objdump -d --reloc /usr/lib64/crt1.o
>
> /usr/lib64/crt1.o:     file format elf64-x86-64
>
>
> Disassembly of section .text:
>
> 0000000000000000 <_start>:
>    0:   31 ed                   xor    %ebp,%ebp
>    2:   49 89 d1                mov    %rdx,%r9
>    5:   5e                      pop    %rsi
>    6:   48 89 e2                mov    %rsp,%rdx
>    9:   48 83 e4 f0             and    $0xfffffffffffffff0,%rsp
> …
>
> 0000000000000030 <_dl_relocate_static_pie>:
>   30:   c3                      retq
> ”
>
> Isn't _dl_relocate_static_pie useless there?  It will not be used in
> dynamically linked binaries.  Should it be included in libc_nonshared.a
> instead, so that static PIE binaries pick it up, as needed?
>

This dummy function is provided for arm.  Can we find a way to define
it only for arm?

-- 
H.J.