[PATCH 3/6] x86: harmonize disp with imm handling

[Jan Beulich]

On 17.06.2021 16:46, H.J. Lu wrote:
> On Mon, Jun 14, 2021 at 3:25 AM Jan Beulich <jbeulich@suse.com> wrote:
>> --- /dev/null
>> +++ b/gas/testsuite/gas/i386/disp-imm-32.s
>> @@ -0,0 +1,17 @@
>> +       .text
>> +disp_imm:
>> +       mov     -0xffffffff(%eax), %eax
> 
> I don't think we should treat  -0xffffffff(%eax) as 1(%eax).
> We allow addresses to wraparound. I don't see a need for
> displacements to wraparound.

This then is entirely unexpected to the programmer. In fact the
same (abstracted away behind some defines or equates) constant
could be used for both purposes (and should be usable both ways,
imo).

Jan