Re: [Tinycc-devel] x86_64: shared libs

[Thomas Preudhomme]

Le 2014-03-31 11:54, Michael Matz a écrit :
> Hi,
>
> I just pushed some things [1] to mob that make shared libs on x86-64
> linux sort of working (well, in my little tests).  It's not 100%
> conformant to the ABI yet, but hey, its late here :)  i386 could now
> use some cleanups as well (so that it really generates PIC code, not
> that unsharing text-reloc containing code it currently emits).  I 
> have
> checked x86-64 (no testsuite bugs) and i386 (no _additional_ 
> testsuite
> bugs), but not ARM. I tried to not change the latter, although it 
> also
> contains dubious code (OTOH it currently doesn't support generated
> shared libs at all, so ...), but I might have unintentionally broken
> stuff.

Wow, that's great. Thanks a lot for this, I know a few users that will 
be happy.

> I had to extend struct sym_attr to contain a full plt_offset, not
> just a flag, it's really required.  Shouldn't be too bad as it's
> created only for symbols that really take part in dynamic linking.

Not really no because alloc_sym_attr allocates an array whose size is 
that of the max sym_index passed to it. This makes finding the attribute 
of a symbol fast, as opposed to a mailing list. A simple hashtable with 
helper functions would be better of course.

> Testing appreciated (hi Arnold :) ).

I'll ping the Debian bug report for people to test you changes. Thanks 
again, it was a long requested feature.

Best regards,

Thomas