Re: Text relocations in shared libs

Valeriy E. Ushakov wrote:
> On Sun, Dec 25, 2005 at 13:54:13 -0500, Charles M. Hannum wrote:
> 
> 
>>What prevents you from just moving errno to a different register before
>>executing the PLT?  Surely you have another callee-saved register you
>>can destroy.  You can probably even put the move instruction in one of
>>the branch delay slots, so it doesn't cost you anything.
> 
> 
> Right, but that kinda reinforces my other point.  If the interface
> between syscall code and cerror is private, why do we need to bother
> with exporting cerror at all?  We can just make it .hidden and make
> the call to go directly to cerror, instead of going via PLT.

cerror is also used by libposix.  So either posix will need its own or
able to use libc's.


-- 
Matt Thomas                     email: [email protected]
3am Software Foundry              www: http://3am-software.com/bio/matt/
Cupertino, CA              disclaimer: I avow all knowledge of this message.