On 07.08.21 19:00, Philippe Gerum wrote:
>
> Jan Kiszka <[email protected]> writes:
>
>> Hi all,
>>
>> just wanted to debug the RTnet issues we now see in CI on arm and arm64.
>> I picked arm as first target, but that apparently starts to break with
>> gcc-9 or newer (tried 9.2 and 10.2):
>>
>> make[5]: Entering directory '/xenomai/lib/cobalt/arch/arm'
>> CC libarch_la-features.lo
>> features.c: In function 'cobalt_arch_check_features':
>> features.c:82:1: error: r7 cannot be used in 'asm' here
>> 82 | }
>> | ^
>>
>> That seems to be related to passing the syscall number via r7 on ARM. Is
>> our ABI soon no longer compilable, or can we fix this?
>>
>
> Just tried to reproduce this issue with the latest stable (10.3-2021.07)
> from ARM [1], and a fairly recent linaro snapshot (11.0.1-2021.03) [2],
> to no avail. I tried with --enable-debug=symbols, --disable-debug,
> --enable-debug=full, no issue so far.
>
> Can you please share you configure settings?
I'm on ARM gcc 10.3-2021.07 as well. Debian's gcc from bullseye show
this, too.
./configure --host=arm-none-linux-gnueabihf --enable-debug=full
on master. And that results in
CC libarch_la-features.lo
../../../../../lib/cobalt/arch/arm/features.c: In function
‘cobalt_arch_check_features’:
../../../../../lib/cobalt/arch/arm/features.c:82:1: error: r7 cannot be used in
‘asm’ here
82 | }
| ^
Jan
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