Philippe Gerum wrote: > On Sun, 2009-07-19 at 17:23 +0200, Jan Kiszka wrote: >> Gilles Chanteperdrix wrote: >>> Jan Kiszka wrote: >>>> gcc-4.1.3 of kubuntu has problem with proper syscall register >>>> initialization in rt_task_shadow if TLS is enabled. But it is likely >>>> that more compiler versions below 4.3 and more configuration variants >>>> are affected. >>>> >>>> This patch installs a workaround for these gcc versions which places an >>>> optimization barrier before the register variable setup. This forces gcc >>>> to actually load the registers. >>> I have tried the barrier with arm gcc, it does not work. However, >>> marking the registered clobbered instead of the memory fixes arm gcc 4.3 >>> bug. So, I wonder, would not it make more sense to mark the registers as >>> clobbered by the barrier instead of memory on x86 too? >>> >> Sounds reasonable. Will give it a try later.
Sounded reasonable - but didn't work. So we have to stick with the original version. >> >> I just noticed that my unification patch includes some unwanted merge >> artifact, so it requires another round in any case. > > So I'm discarding the pending pull request entirely. Please re-submit > when ready. I just pushed an updated for patch 3 (removing the original "+r" workaround from the unified version). Please pull now from git://git.xenomai.org/xenomai-jki.git for-upstream Jan
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