Hello, I do not think my problem is related to this. I have no problem to run the run code on the final target, once it succeeds to compile. But anyway, thanks for the information and for your time.
Regards Patrice 2009/12/8 Derick Centeno <dcent...@ydl.net> > Hi Patrice: > > I did a little digging and came across the following explanation from IBM > which explains that the CPU you are coding for (amcc440) requires a specific > Linux capable of the following: > > In versions 2.6.26 and earlier of the Linux kernel, the code did not > properly clear reserved bits 11 - 15 in word two of a Translation Lookaside > Buffer (TLB) entry. These bits need to be set to zero as documented in the > respective user’s manuals to avoid a degradation in performance. > A change was included in Linux kernel version 2.6.27 which will clear > reserved bits 11 - 15 bits in the finish_tlb_load function. With these bits > automatically cleared, inadvertent performance degradation will be avoided. > Users of the PPC440x6 and all 464 processor cores should use Linux kernel > version 2.6.27 or later. > > You can read the document for yourself here: > > > https://www-01.ibm.com/chips/techlib/techlib.nsf/techdocs/6F95C69A2ED9AE73002575AF005B6E4E > > YDL 6.2 does use kernel 2.6.27 (see here: > http://www.fixstars.com/en/products/ydl/installed.html) however make sure > that the settings recommended by IBM are in effect for the amcc440. > However, that would mean that you are directly coding for that cpu not the > native 970MP which comprises the PowerStation which would explain the > problems you are reporting. > > IBM does have a document explaining coding for the 970MP (which are the > native cpus within the PowerStation) and the Linux parameters they > recommend. That document is here: > > > https://www-01.ibm.com/chips/techlib/techlib.nsf/techdocs/A0C294269DB8D1EC87256FF9004FC54C > > These are just preliminary references, of course, but I thought the > information could be a useful start for you. As for acquiring more details, > you may have to confer with someone at Fixstars. > > All the best... > > > On Tue, Dec 8, 2009 at 8:08 AM, Patrice B <pbfwdl...@gmail.com> wrote: > >> Hello, >> >> I'm using a Power Station as a build machine to generate code for >> amcc440 cpu using gcc 4.4 with option -mcpu=440fp. Since this release >> of gcc, I notice that code is generated with string instructions which >> are not supported by Power Station cpu, and then, it makes build >> failed if a newly built binary needs to be run for a next build step. >> Is there a way to emulate those instructions on a Power Station (which >> currently runs YDL 6.0) >> >> Best regards >> >> Patrice >> _______________________________________________ >> yellowdog-general mailing list - yellowdog-general@lists.fixstars.com >> Unsuscribe info: >> http://lists.fixstars.com/mailman/listinfo/yellowdog-general >> HINT: to Google archives, try '<keywords> site:us.fixstars.com' >> > > > > -- > ========= > Refranes/Popular sayings: > > The Taino say: > No hay mal que por bien no venga. > There is no evil out of which good cannot blossom. > > _______________________________________________ > yellowdog-general mailing list - yellowdog-general@lists.fixstars.com > Unsuscribe info: > http://lists.fixstars.com/mailman/listinfo/yellowdog-general > HINT: to Google archives, try '<keywords> site:us.fixstars.com' >
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