Gentoo Archives: gentoo-embedded

From: Ned Ludd <solar@g.o>
To: "Peter S. Mazinger" <ps.m@×××.net>
Cc: gentoo-embedded@g.o
Subject: Re: [gentoo-embedded] some uClibc experience
Date: Wed, 19 Nov 2003 01:26:59
Message-Id: 1069205153.6314.169.camel@simple
In Reply to: Re: [gentoo-embedded] some uClibc experience by "Peter S. Mazinger"
On Tue, 2003-11-18 at 08:45, Peter S. Mazinger wrote:
> On 18 Nov 2003, Ned Ludd wrote: > > > http://www.research.ibm.com/trl/projects/security/ssp/ > I didn't meant the original one, the needed modifications to remove > guard/smash from libgcc (the original one adds it to libgcc, but the > changes of gentoo put it into glibc. Or should it be present in libc and > libgcc?
IMO that symbol should not be provided by libgcc.a. I think todays security update of glibc happens to fix all this.
> > Peter > > > > On Mon, 2003-11-17 at 13:37, Peter S. Mazinger wrote: > > > On 17 Nov 2003, Ned Ludd wrote: > > > > > > > On Sun, 2003-11-16 at 19:46, Peter S. Mazinger wrote: > > > > > On 12 Nov 2003, Ned Ludd wrote: > > > > > > > > > > > On Wed, 2003-11-12 at 16:31, Peter S. Mazinger wrote: > > > > > > > There are problems building some of the binaries with propolice enabled > > > > > > > gcc, mainly the .hidden support in binutils has to be "hidden" from gcc, > > > > > > > but as I can see (read), the glibc version does not work flawlessly > > > > > > > either. > > > > > > > > > > > > > Have you successfully used ssp with uclibc? > > > > > It worked (somehow, not quite correct, and some packages where not > > > > > rebuildable) at the time where uClibc had support for LIBGCC_FUNCTIONS > > > > > (adding functions from libgcc to libc) This was the only way I got a > > > > > system running it (__guard and __smash... where added to libc). Since then > > > > > I cannot modify buildroot so that I get a system running, segfaults on all > > > > > the line (tested only with gcc-3.3.x and protector 3.3-5). I think the > > > > > solution would be to add the needed functions to uClibc (and remove them > > > > > from libgcc!!!). > > > > > > > > One of the hardened-gcc version introduced guard symbols to libgcc.a. > > > > I'm pretty sure this no longer should be the case if your running ~arch > > > > as they are in fact getting introduced into glibc. > > > > If you care to hack the functionaly into uClibc I'll point you at the > > > > glibc version from etoh http://dev.gentoo.org/~solar/ssp/guard.c > > > Where do I find the modified protector patch for gcc? > > > > > > Peter > >
-- Ned Ludd <solar@g.o> Gentoo Linux Developer

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