On 2/7/19 12:53 PM, Jiri Gaisler wrote:
> On 2/7/19 12:45 PM, Sebastian Huber wrote:
>> On 07/02/2019 12:43, Jiri Gaisler wrote:
>>> Works OK here:
>>>
>>> $ sparc-rtems5-sis -leon3 -nouartrx -r -tlim 200 s -m 4
>>> ./sparc-rtems5/c/leon3/testsuites/smptests/smpswitchextension01.exe
>>>
>>> SIS - SPARC/RISCV instruction simulator 2.11, copyright Jiri Gaisler 1995
>>> Bug-reports to j...@gaisler.se
>>>
>>> LEON3 emulation enabled, 4 cpus online, delta 50 clocks
>>>
>>>
>>>
>>> *** BEGIN OF TEST SMPSWITCHEXTENSION 1 ***
>>> *** TEST VERSION: 5.0.0.03fcbb15d24e2eec41bac9f5dee30bbf7dc888b8-modified
>>> *** TEST STATE: EXPECTED-PASS
>>> *** TEST BUILD: RTEMS_NETWORKING RTEMS_POSIX_API RTEMS_SMP
>> I used --enable-rtems-debug:
>>
>> *** TEST BUILD: RTEMS_DEBUG RTEMS_NETWORKING RTEMS_POSIX_API RTEMS_SMP
> OK, I can repeat it. I will debug it ...
The problem comes from a function call to a NULL pointer in cpu 1:
243329 4000a2f0 80a74016 cmp %i5, %l6
243331 4000a2f4 32bffffb bne,a 0x000000004000a2e0
243332 4000a2f8 c2076008 ld [ %i5 + 8 ], %g1
243334 4000a2e0 9210001c mov %i4, %o1
243335 4000a2e4 9fc04000 call %g1 <==== %g1 is 0
243337 4000a2e8 90100013 mov %l3, %o0
243338 00000000 00000000 unimp 0
243341 40000020 a1480000 rd %psr, %l0
The source code is in cpukit/include/rtems/score/userextimpl.h:280
while ( node != tail ) {
const User_extensions_Switch_control *extension =
(const User_extensions_Switch_control *) node;
(*extension->thread_switch)( executing, heir ); <=====
node = _Chain_Immutable_next( node );
}
_Per_CPU_Release( cpu_self );
I don't think anything changed in the latest sis (2.11). I get the same error
in 2.10.
(SMP debugging is not working well in sis - I am trying to improve it ...)
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