Re: ELF DT_HASH hash-table entry size.

[Daniel Jacobowitz <drow@false.org>]

On Mon, Feb 21, 2005 at 11:23:12AM -0800, Richard Henderson wrote:
> On Mon, Feb 21, 2005 at 01:27:08PM +1030, Alan Modra wrote:
> > elf64-alpha.c and elf64-s390.c both define a hash entry size of 8.  This
> > violates the ELF spec, which say the entry size is always 4.  Was the
> > alpha and s390 choice deliberate, or is this just an accident?
> 
> Accidental.  BFD was wrong for *all* 64-bit ELF ports at one time.
> Alpha was the only one that had been in general use when the problem
> was discovered and fixed.  But it was too late to change for Alpha
> without breaking binary compatibility.
> 
> Dunno what s390's excuse is.
> 
> > Note that using a size of 8 has practical difficulties:  An executable
> > without a section header has no way to communicate to generic ELF tools
> > like readelf (via sh_ent_size) that the hash table is unusual.
> 
> Huh?  An executable without a section header?  If you don't have a 
> section header then you don't have a symbol table, so the point is
> moot.

Doesn't it also apply to .dynsym?

-- 
Daniel Jacobowitz
CodeSourcery, LLC