Possible tls bug on arm / microblaze

[Sam Price]

I modified cpukit/score/cpu/microblaze/__tls_get_addr.c
and added a printf
  printf("TLS OFFSET %x %p %p %d",(uintptr_t) _TLS_Alignment,
tls_block,executing->Start.tls_area, ti->offset);
and then ran the splts* tests on my hardware.
The __tls_get_addr in the splts* tests.

*** BEGIN OF TEST SPTLS 1 ***
*** TEST VERSION: 6.0.0.0cb37ce45e81a2b030cbd99678a42884bc864f84
*** TEST STATE: EXPECTED_PASS
*** TEST BUILD: RTEMS_POSIX_API
*** TEST TOOLS: 10.3.1 20220622 (RTEMS 6, RSB
5a19dda19ffaaa43305af1f34597fd4d8165029b, Newlib 27fd806)
TLS item = 123
TLS item = 123
TLS item = 5

*** END OF TEST SPTLS 1 ***


[ RTEMS shutdown ]
RTEMS version: 6.0.0.0cb37ce45e81a2b030cbd99678a42884bc864f84
RTEMS tools: 10.3.1 20220622 (RTEMS 6, RSB
5a19dda19ffaaa43305af1f34597fd4d8165029b, Newlib 27fd806)
executing thread ID: 0x08a010001
executing thread name: UI1


*** BEGIN OF TEST SPTLS 2 ***
*** TEST VERSION: 6.0.0.0cb37ce45e81a2b030cbd99678a42884bc864f84
*** TEST STATE: EXPECTED_PASS
*** TEST BUILD: RTEMS_POSIX_API
*** TEST TOOLS: 10.3.1 20220622 (RTEMS 6, RSB
5a19dda19ffaaa43305af1f34597fd4d8165029b, Newlib 27fd806)
A::globalCounter() = 0
../../../testsuites/sptests/sptls02/init.cc: 168 extern_int == 7

[ RTEMS shutdown ]
RTEMS version: 6.0.0.0cb37ce45e81a2b030cbd99678a42884bc864f84
RTEMS tools: 10.3.1 20220622 (RTEMS 6, RSB
5a19dda19ffaaa43305af1f34597fd4d8165029b, Newlib 27fd806)
executing thread ID: 0x08a010001
executing thread name: UI1

RTEMS version: 6.0.0.0cb37ce45e81a2b030cbd99678a42884bc864f84
RTEMS tools: 10.3.1 20220622 (RTEMS 6, RSB
5a19dda19ffaaa43305af1f34597fd4d8165029b, Newlib 27fd806)
executing thread ID: 0x08a010001
executing thread name: UI1


*** BEGIN OF TEST SPTLS 3 ***
*** TEST VERSION: 6.0.0.0cb37ce45e81a2b030cbd99678a42884bc864f84
*** TEST STATE: EXPECTED_PASS
*** TEST BUILD: RTEMS_POSIX_API
*** TEST TOOLS: 10.3.1 20220622 (RTEMS 6, RSB
5a19dda19ffaaa43305af1f34597fd4d8165029b, Newlib 27fd806)

*** END OF TEST SPTLS 3 ***


[ RTEMS shutdown ]
RTEMS version: 6.0.0.0cb37ce45e81a2b030cbd99678a42884bc864f84
RTEMS tools: 10.3.1 20220622 (RTEMS 6, RSB
5a19dda19ffaaa43305af1f34597fd4d8165029b, Newlib 27fd806)
executing thread ID: 0x08a010001
executing thread name: UI1

*** BEGIN OF TEST SPTLS 4 ***
*** TEST VERSION: 6.0.0.0cb37ce45e81a2b030cbd99678a42884bc864f84
*** TEST STATE: EXPECTED_PASS
*** TEST BUILD: RTEMS_POSIX_API
*** TEST TOOLS: 10.3.1 20220622 (RTEMS 6, RSB
5a19dda19ffaaa43305af1f34597fd4d8165029b, Newlib 27fd806)

*** END OF TEST SPTLS 4 ***


[ RTEMS shutdown ]
RTEMS version: 6.0.0.0cb37ce45e81a2b030cbd99678a42884bc864f84
RTEMS tools: 10.3.1 20220622 (RTEMS 6, RSB
5a19dda19ffaaa43305af1f34597fd4d8165029b, Newlib 27fd806)
executing thread ID: 0x08a010001
executing thread name: UI1

On Tue, Jul 19, 2022 at 2:25 PM Sebastian Huber <
sebastian.huber at embedded-brains.de> wrote:

> On 19/07/2022 20:10, Sam Price wrote:
> >
> > Where would the ti->offset member be updated / initialized at?
>
> The caller of __tls_get_addr() has to do this. On ARM, this is function
> is normally not used.
>
> --
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-- 
Sincerely,

Sam Price
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