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Jeremy Fitzhardinge [off-list ref] 16.03.07 06:10 >>>

Zachary Amsden wrote:

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Well testing that is not so fun.  I installed SUSE Pro 9.0, and
strings on ld.so contains the magic at_sysinfo assert!  But it doesn't
install TLS libraries, so I'll have to install them by hand.

In works - in theory.  Look, a puppy!

Scratchbox is rumored to produce the fabled assertion even on modern
distros by installing its own toolchain which includes the dreaded glibc.

I think Andi and Andrew have boxes which are afflicted.

I have one, too (which is one reasone why I created the original Xen patch).

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I'm playing safe.  Binary identical relocation to 0xffffe000 was my goal.

Yeah, fair enough.  But as Eric likes to keep pointing out, an
executable ELF file need not have any sections at all, so the only safe
course for anything "real" is via the section headers.

Program headers you mean.

So I guess the right thing to do is relocate the dynamic stuff via
PT_DYNAMIC, and relocate the symtab if its present.

Symtab should also be deduced from program headers.

I'm actually surprised this got re-implemented from scratch, when my patch
already had both variants (one just #ifdef-ed out), and was tested in both
forms (actually, I first implemented the ELF form, and only after seeing the
bloat it added to the sources I came up with the second variant, which in
the end unfortunately didn't add significantly less bloat to the Makefile.

Jan