On 2022-02-11 2:07 p.m., Florian Weimer wrote:
>> Loading dp using from _rtld_local doesn't work till relocations are
>> done.  Is there a way to compute main_map earlier?
> You shouldn't need main_map for this.  The link editor computes the
> DT_PLTGOT and therefore knows the correct (relative) address.
Your are correct.  The link editor does define the symbol $global$ at the start of the PLTGOT.
However, I couldn't find a way to load its address without rummaging through the symbol table
of main.  This is less efficient than using the PLTGOT value from the ELF header and main_map.

I committed the attached change.  It doesn't need a new hook.

Thanks,
Dave

-- 
John David Anglin  dave.anglin@bell.net