Messages in this thread | | | From | Rusty Russell <> | Subject | Re: [PATCH] Add non-zero module sections to sysfs | Date | Mon, 08 Apr 2013 13:44:45 +0930 |
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Philip Kranz <philip.kranz@googlemail.com> writes: > Hello. > > On Fri, Apr 05, 2013 at 12:07:15PM +0200, James Bottomley wrote: >> Just so you know: this isn't a parisc specific problem. Gcc produces >> duplicate section names under various circumstances, but the one that >> bites us is -ffunction-sections. Note that there are proposals to use >> -ffunction-sections on all architectures (so we can garbage collect >> unused functions) in which case you'll induce the bug identified in >> 35dead4235e2b67da7275b4122fed37099c2f462 on every architecture > > I am not able to produce an object file with duplicate section names > using gcc on x86. Even with -ffunction-sections, every section gets a > unique name. Is this architecture-specific behaviour of gcc?
Good point. ld -r will collapse them into the same section (since gcc produces them they have to have the same section attributes).
You can do it with --unique, but no arch uses that. PARISC has a platform-specific toolchain hack which does that for .text sections. (Thanks to Alan Modra for that clue...)
Thanks, Rusty.
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