On Mon, 7 Oct 2002, Johannes Stezenbach wrote: > The question is how the glibc can detect if > a) the CPU does not have LL/SC > b) the kernel guarantees k1 != MAGIC Well, since the relevant code will mostly be inlined, you don't really need either as you can't select an alternative anyway. The relevant variant will be selected at the build time as it's already being done for the ll/sc and sysmips() variants. You may consider marking binaries as using your approach so that the kernel refuses to run them if unsupported, but for MIPS it isn't performed for any functionality so far, so you'd have to study how other ports do that and which way is most suitable. > I also want to know if there's public interest to get such > a change in the kernel. If yes, I will try to get a matching > patch into glibc. If no, I will just post the current patch I > use to the list for the hackers to pick up. Well, the kernel changes should be trivial, with no performance impact if written carefully, so they might get included even if only a few people are interested. Send a proposal. -- + Maciej W. Rozycki, Technical University of Gdansk, Poland + +--------------------------------------------------------------+ + e-mail: macro@ds2.pg.gda.pl, PGP key available +
