From: "Joseph S. Myers" <joseph@codesourcery.com>
To: Michael Eager <eager@eagerm.com>
Cc: gdb@sourceware.org, Alan Modra <amodra@gmail.com>
Subject: Re: PowerPC SecurePLT - stepping into library function
Date: Fri, 06 Jan 2012 20:09:00 -0000 [thread overview]
Message-ID: <Pine.LNX.4.64.1201062006460.25738@digraph.polyomino.org.uk> (raw)
In-Reply-To: <4F075159.5090508@eagerm.com>
On Fri, 6 Jan 2012, Michael Eager wrote:
> It seems that the best way to fix this would be to create
> a new OSABI sniffer for SecurePLT which identifies that
> the executable was compiled with -msecurePLT. One issue
> is how to identify these programs. The Power Arch 32-bit ABI
> (Sect 5.2.5.2, note at end) says that these will have
> R_PPC_REL16 relocations. I don't see any of these relocs.
That's about relocatable objects, i.e. static relocations in .o files, not
dynamic relocations in executables and shared libraries.
> Is there any possibility of a chimera: an executable compiled
> using Secure PLT linking to libraries which use the old style
> PLT? Or vice-versa? I'm assuming that this cannot happen.
As far as I know that ought to work.
--
Joseph S. Myers
joseph@codesourcery.com
next prev parent reply other threads:[~2012-01-06 20:09 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-06 19:54 Michael Eager
2012-01-06 20:09 ` Joseph S. Myers [this message]
2012-01-06 20:27 ` Michael Eager
2012-01-06 20:15 ` Mark Kettenis
2012-01-06 20:24 ` Michael Eager
2012-01-06 20:56 ` Mark Kettenis
2012-01-07 20:57 ` Michael Eager
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