pc32 -> plt32 conversion and related questions

[Jan Beulich]

On 17.06.2021 17:23, H.J. Lu wrote:
> On Thu, Jun 17, 2021 at 8:16 AM Jan Beulich <jbeulich@suse.com> wrote:
>> On 17.06.2021 17:13, H.J. Lu wrote:
>>> On Tue, Jun 15, 2021 at 6:42 AM Jan Beulich <jbeulich@suse.com> wrote:
>>>> And then, still in this same context, I did also notice that the
>>>> linker complains about e.g. PC32 relocs when building a shared
>>>> library even when that's a x32 one (suggesting to rebuild with
>>>> -fPIC). 32-bit relocations can't overflow in that ABI, so wouldn't
>>>> such errors better be suppressed there?
>>>
>>> It can overflow in x32 since x32 is totally implemented on software
>>> and there is no address wraparound.
>>
>> But that is to be dealt with by the dynamic linker, isn't it? The
>> static linker should assume everything fits in the 2Gb window.
> 
> What can the dynamic linker do? We are talking about shared
> libraries here.  The distance between a shared library and
> another shared library/executable can be > 2GB.

In x32? That would be a bug in the dynamic loader, wouldn't it?

Jan