>> [Patch 5/5]
>> I am getting segfaults while still in __uClibc_main when using
>> buildroot's qemu_xtensa_lx60_defconfig and qemu-xtensa.  I'm not sure
>> the exact cause, but I would guess that some functions aren't being
>> relocated correctly or the TLS wasn't updated correctly. It could also
>> possibly be a problem with the quick gcc patch I wrote to compile with
>> -static-pie. If you have a gcc patch that you think will fix this as
>> well, I would be glad to test it.

> You're right, the following recent binutils and gcc changes are
> required for generation of correct relocations and recognition of
> the -static-pie option:
> https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff;h=658ba81aef5e85a08d67eb211a43c6db775a36b3
> https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=9e0c2696724d4d004ea189a69f15781c7baa68e1

The binutils patch fixed the problems! I was able to make a xtensa toolchain which worked with my test programs for C and C++.


On Wed, Sep 14, 2022 at 4:15 PM Lance Fredrickson <lancethepants@gmail.com> wrote:


On 9/14/2022 1:23 PM, linted wrote:
> [Patch 5/5]
> I am getting segfaults while still in __uClibc_main when using
> buildroot's qemu_xtensa_lx60_defconfig and qemu-xtensa.  I'm not sure
> the exact cause, but I would guess that some functions aren't being
> relocated correctly or the TLS wasn't updated correctly. It could also
> possibly be a problem with the quick gcc patch I wrote to compile with
> -static-pie. If you have a gcc patch that you think will fix this as
> well, I would be glad to test it.
I've had -static-pie binaries segfault with qemu while they ran fine on
actual hardware. I was using Debian 10 so maybe that's because it's an
old version of qemu, and maybe newer versions can handle this better?

Lance
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