Messages in this thread | | | Date | Sat, 6 May 2006 12:41:41 +0930 | From | Alan Modra <> | Subject | Re: as bug (was: Re: smp/up alternatives crash when CONFIG_HOTPLUG_CPU) |
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On Fri, May 05, 2006 at 04:13:24PM +0300, Denis Vlasenko wrote: > On Friday 05 May 2006 15:20, Alan Modra wrote: > > the frag base addresses have not yet been set, and zero is used. ie. > > gas tries to assemble ".fill -5,1,0x42".
The fact that enabling gas listings fixes this has been nagging at me since writing the sketchy description of gas frags and relaxation. I'd forgotten that relaxation keeps iterating over all sections until no frag changes address. ie. even though the first .fill is using invalid addresses, there will be a subsequent pass that uses the correct value.
The reason why gas -al helps with this case is that gas creates a new frag for each line as somewhere to hang the file/line number info. So both "661" and "662" start off at offset zero in their frags and the initial pass .fill has a zero length rather than a negative one.
So perhaps gas ought to be able to handle this after all.. I'll see if I can come up with a fix.
-- Alan Modra IBM OzLabs - Linux Technology Centre - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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