From: Hans-Peter Nilsson <hp@axis.com>
To: <binutils@sourceware.org>
Cc: Jeff Law <jeffreyalaw@gmail.com>, <nickc@redhat.com>,
<mliska@suse.cz>, <gcc@gcc.gnu.org>
Subject: Re: [committed] exec-stack warning for test which wants executable stacks
Date: Thu, 26 May 2022 03:17:01 +0200 [thread overview]
Message-ID: <20220526011701.1D73B2045A@pchp3.se.axis.com> (raw)
In-Reply-To: <d4c5ff7e-8c09-6e9d-f7fb-95b740461e42@gmail.com> (message from Jeff Law via Binutils on Mon, 25 Apr 2022 17:30:59 +0200)
> From: Jeff Law via Binutils <binutils@sourceware.org>
> Date: Mon, 25 Apr 2022 17:30:59 +0200
> On 4/25/2022 9:26 AM, Nick Clifton wrote:
> > Hi Jeff,
> >
> > Just FYI - I am also looking at adding in another warning. This
> > time for
> > when the linker creates a PT_LOAD segment which has all of the RWX
> > flags
> > set. At the moment my testing seems to show that it only causes
> > problems
> > when a custom linker script is used that defines its own program
> > headers
> > and does not provide separate headers for code and data.
> That also sounds quite reasonable. My biggest worry would be the
> embedded targets which have their own linker scripts -- but like the
> executable stack warning, I think you should go for it and we'll deal
> with the fallout.
(Looks like I'm first to be hit by the
--enable-warn-rwx-segments default, or the first one to
bother, lucky me.)
So, with my autotester for cris-elf not able to update
binutils on its own because of all the warnings in the gcc
test-suite (all code and data get a single LOAD header,
which naturally is RWX), let's discuss a method for a
binutils target to default turn off this
configure-time-default-on warning. I just don't think its
reasonable to require an extra configure option for the
intended default behavior for a target.
How about the usual method, a line in the ld emulparams
file for the target?
brgds, H-P
next prev parent reply other threads:[~2022-05-26 1:17 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-24 17:42 Jeff Law
2022-04-25 12:56 ` Martin Liška
2022-04-25 14:37 ` Jeff Law
2022-04-25 14:42 ` Nick Clifton
2022-04-25 14:59 ` Jeff Law
2022-04-25 15:26 ` Nick Clifton
2022-04-25 15:30 ` Jeff Law
2022-05-26 1:17 ` Hans-Peter Nilsson [this message]
2022-05-26 23:17 ` Hans-Peter Nilsson
2022-04-26 13:54 ` Jeff Law
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