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RE: [PATCH] exclude runtime-pseudo-reloc symbols from auto-export
- From: "Ralf Habacker" <Ralf dot Habacker at freenet dot de>
- To: <cygwin at cygwin dot com>,<binutils at sources dot redhat dot com>
- Date: Sat, 21 Dec 2002 20:26:14 +0100
- Subject: RE: [PATCH] exclude runtime-pseudo-reloc symbols from auto-export
> >What about putting such symbols in another named text section, so that
> >ld would ignore them ?
> I don't see how you could do that since the symbol is associated with an
> existing place in memory. We could put the whole function in a
> different segment
I had in mind something like this
#define NO_EXPORT_TEXT __attribute__((section(".text_no_export")))
#define NO_EXPORT_DATA __attribute__((section(".data_no_export")))
but this need some additional efforts in the ld source.
> but that's not the kind of solution I was thinking of.
> I was thinking that there might be an unused attribute that could be
> pressed into service as a "don't auto export" (doesn't linux/elf have
> something like this?) or that there was a way to name the symbol in some
> way that wasn't easily available from a C program, like putting a "." in
> the name with an asm alias.
The weak attribute does not have any effect for at least gcc version 2.95.3-5
(cygwin special) and I can't see any other attribute, which could be used from
Perhaps somebody else could see something usefull or the gcc could be patched to
uses the weak attribute ???