RFC: Add 32bit x86-64 support to binutils

[H.J. Lu]

On Mon, Jan 3, 2011 at 2:40 AM, Jan Beulich <JBeulich@novell.com> wrote:
>>>> On 30.12.10 at 21:02, "H.J. Lu" <hjl.tools@gmail.com> wrote:
>>
>> Here is the ILP32 psABI:
>>
>> http://www.kernel.org/pub/linux/devel/binutils/ilp32/
>>
>
> I think it is a gross misconception to tie the ABI to the ELF class of
> an object. Specifying the ABI should imo be done via e_flags or
> one of the unused bytes of e_ident, and in all reality the ELF class
> should *only* affect the file layout (and 64-bit should never have
> forbidden to use 32-bit ELF containers; similarly 64-bit ELF objects
> may have uses for 32-bit architectures/ABIs, e.g. when debug
> information exceeds the 4G boundary).
>

I agree with you in principle. But I think it should be done via
a new attribute section, similar to ARM.


-- 
H.J.