From: Ben Wolsieffer <ben.wolsieffer@hefring.com>
To: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: "Yann E. MORIN" <yann.morin.1998@free.fr>, buildroot@buildroot.org
Subject: Re: [Buildroot] [PATCH v2 0/4] Add support for FDPIC binaries on ARM
Date: Wed, 3 Aug 2022 16:52:07 -0400 [thread overview]
Message-ID: <Yurf9xxwwP+UWWpl@hefring> (raw)
In-Reply-To: <20220803000843.7adbecf5@windsurf>
Thanks for the review!
On Wed, Aug 03, 2022 at 12:08:43AM +0200, Thomas Petazzoni wrote:
> Hello Ben,
>
> On Tue, 2 Aug 2022 16:21:38 -0400
> Ben Wolsieffer <ben.wolsieffer@hefring.com> wrote:
>
> > Introduces support for the FDPIC binary format on ARM. FDPIC binaries
> > enable more efficient use of memory on no-MMU systems.
> >
> > The first patch reverts the removal of general FDPIC support, while the
> > second adds support for FDPIC specifically on ARM. The last two patches
> > disable FDPIC when building Linux and U-Boot.
>
> Thanks a lot for this support! Could you comment on which
> gcc/binutils/gdb versions have support for FDPIC on ARM?
Support was added in GCC 10 and binutils 2.31. It appears that the
patches to GDB [1] were never upstreamed, although mainline GDB seems to
work more or less fine without them. gdbserver and the kernel need
patches to support debugging on Cortex-M processors, but this is
unrelated to FDPIC.
[1] https://github.com/mickael-guene/gdb/commits/gdb-7.5.1-fdpic
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prev parent reply other threads:[~2022-08-03 20:52 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-02 20:21 [Buildroot] [PATCH v2 0/4] Add support for FDPIC binaries on ARM Ben Wolsieffer
2022-08-02 20:21 ` [Buildroot] [PATCH v2 1/4] Revert "arch: drop now useless support for FDPIC" Ben Wolsieffer
2022-08-02 22:12 ` Thomas Petazzoni via buildroot
2022-08-03 21:04 ` Ben Wolsieffer
2022-08-02 20:21 ` [Buildroot] [PATCH v2 2/4] arch/arm: add support for FDPIC Ben Wolsieffer
2022-08-02 22:13 ` Thomas Petazzoni via buildroot
2022-08-03 20:54 ` Ben Wolsieffer
2022-08-02 20:21 ` [Buildroot] [PATCH v2 3/4] boot/uboot: pass -mno-fdpic if FDPIC is enabled Ben Wolsieffer
2022-08-02 22:15 ` Thomas Petazzoni via buildroot
2022-08-03 21:07 ` Ben Wolsieffer
2022-08-02 20:21 ` [Buildroot] [PATCH v2 4/4] linux: " Ben Wolsieffer
2022-08-02 22:08 ` [Buildroot] [PATCH v2 0/4] Add support for FDPIC binaries on ARM Thomas Petazzoni via buildroot
2022-08-03 20:52 ` Ben Wolsieffer [this message]
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