Re: fs/binfmt_aout.o, Error: suffix or operands invalid for `cmp' [was Re: 2.6.1

[Chuck Ebbert]

> Andrew Morton wrote:
In-Reply-To: <4499BDB4.6060503@xxxxxxxxx>

On Wed, 21 Jun 2006 14:44:20 -0700, H. Peter Anvin wrote:

> Andrew Morton wrote:
> > On Wed, 21 Jun 2006 23:16:17 +0200
> > Mattia Dongili <malattia@xxxxxxxx> wrote:
> > 
> >> On Wed, Jun 21, 2006 at 01:42:15PM -0700, Andrew Morton wrote:
> >>> On Wed, 21 Jun 2006 21:39:32 +0200
> >>> Mattia Dongili <malattia@xxxxxxxx> wrote:
> >>>
> >>>> Thanks, this is fixed, but I have a new failure:
> >>>>   CC [M]  fs/xfs/support/move.o
> >>>>   CC [M]  fs/xfs/support/uuid.o
> >>>>   LD [M]  fs/xfs/xfs.o
> >>>>   CC      fs/dnotify.o
> >>>>   CC      fs/dcookies.o
> >>>>   LD      fs/built-in.o
> >>>>   CC [M]  fs/binfmt_aout.o
> >>>> {standard input}: Assembler messages:
> >>>> {standard input}:160: Error: suffix or operands invalid for `cmp'
> >>>> make[1]: *** [fs/binfmt_aout.o] Error 1
> >>>> make: *** [fs] Error 2
> >>> what the heck?  Can you do `make fs/binfmt_aout.s' then send the relevant
> >>> parts of that file?
> >> I can't really tell which is the relevant part other than line 160 :)
> >> Full file available here:
> >> http://oioio.altervista.org/linux/binfmt_aout.s
> >>
> > 
> > It's complaining about this:
> > 
> > #APP
> >         addl %ecx,%eax ; sbbl %edx,%edx; cmpl %eax,$-1073741824; sbbl $0,%edx   # dump.u_dsize, sum, flag,
> > #NO_APP
> 
> The cmpl should have its arguments reversed.  It's quite possible some versions of the 
> assembler accepts the form given, but they're wrong (and doubly confusing when used as 
> input to sbb.)

This was built with gcc 4.0.4 20060507 (prerelease).

I don't normally build a.out support, but I just tried and it compiled
fine with gcc 4.1.1.  SO this is probably a compiler bug (almost certainly
given that it generated illegal assembler code.)

-- 
Chuck
 "You can't read a newspaper if you can't read."  --George W. Bush
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