[x86-64 psABI] RFC: Extend x86-64 psABI to support x32
H.J. Lu
hjl.tools@gmail.com
Tue Jun 26 21:23:00 GMT 2012
On Tue, Jun 26, 2012 at 2:11 PM, Mark Butler <butlerm@middle.net> wrote:
>
>> x32 is designed to replace ia32 where long is 32-bit, not x86-64.
>>
> I understand, but wouldn't L64P32 be much better in the long run? In terms
> of compatibility with LP64, and an LP64 kernel in particular? The structure
> layouts of any structure that did not contain pointers would be identical,
> for example. struct timeval, struct timespec, struct stat, and on and on...
Linux/x32 uses the same layout for struct timeval, struct timespec, struct stat,
as Linux/x86-64. It is orthogonal to L64 vs L32.
--
H.J.
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