Why aren't we consistent on displacement in x86 disassembler?

H. J. Lu hjl@lucon.org
Thu Apr 26 17:19:00 GMT 2007


On Fri, Apr 27, 2007 at 01:53:28AM +0930, Alan Modra wrote:
> On Thu, Apr 26, 2007 at 04:36:25PM +0100, Jan Beulich wrote:
> > >We can do one of
> > >
> > >1. Use decimal on all 8bit displacements and hex on all 16/32bit
> > >displacement.
> > >2. Use hex on all displacements.
> > >
> > >Any comments?
> > 
> > I'd prefer option 2. Jan
> 
> Consistency is good, but print_operand_value isn't very nice.  eg. a
> displacement of -4 in hex is printed as 0xfffffffc (and even more f's
> if 64-bit).  If we go to all hex, I'd like to see 8 bit displacements
> printed as signed hex numbers, eg. 0xe8 prints as -0x18.  Perhaps you
> could drop the 0x on values of -9 to 9.

I will make all displacements printed as signed hex and drop the 0x on
values of -9 to 9.

H.J.



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