[Bug binutils/11549] Allow 32bit relocations in 64bit code

[hjl dot tools at gmail dot com]

------- Additional Comments From hjl dot tools at gmail dot com  2010-05-05 
15:39 -------
(In reply to comment #5)
> > You have
> > 
> > 0000000000000000 <fn32>:
> >    0:       a1 00 00 00 00          mov    0x0,%eax 1: R_X86_64_32  var
> >    5:       c3                      ret    
> > 
> > Since you are building PIE, which can be loaded anywhere in
> > 64bit address space, R_X86_64_32 may overflow.
> 
> Correct, but the real loader does load this 64bit code at addresses lower 
> then 
> 4Gb, and actually it's loader task in such cases to check relocations 
> overflow 
> and their types, isn't it?

Linker shouldn't generate such binaries.

> 
> Any other way to link 32bit/64bit code to single binary then?
> 

You should checkout how other x86-64 low-level loaders deal with it.

-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=11549

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