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Re: [davidm@napali.hpl.hp.com: readelf question]
>>>>> On Tue, 17 Jun 2003 15:26:35 -0400, Andrew Cagney <ac131313@redhat.com> said:
Andrew> David, I'm guessing that ``gate page'' is vsyscall page?
Yes. To be precise: on ia64, the gate page serves a similar purpose
as on x86 the vsyscall page. (ia64 linux doesn't actually support
virtual syscalls; instead, there are lightweight syscalls, which have
similar performance but aren't restricted to user-mode execution).
Andrew> Whats the Linux kernel status on this one?
They're in the 2.5 tree now (both on x86 and ia64).
Andrew> Last I heard was a kernel patch to make auxv info available
Andrew> in the core file, and via the /proc and ptrace interfaces.
Yes: auxv, core, and ptrace are there. I don't think /proc support is
there. Not sure if Roland is planning to do something about that.
Andrew> Thing is, if that's done, those extra memory sections can go
Andrew> back to being extra memory sections (and everything becomes
Andrew> much simpler).
I don't have much of a preference myself. I'm sure Roland has thought
much more about the user-level parts of the support than I have
(though I do like the idea of being able to get symbol and library
info for the kernel DSO(s); not sure how you'd do that with plain
memory sections).
--david