GSoC 2019: POSIX Compliance - FENV Environment probably not working properly in RISCV

[Vaibhav Gupta]

On Mon, Aug 12, 2019 at 11:50 PM Joel Sherrill <joel at rtems.org> wrote:

> Can you post or email me privately the full patch? I can try to see what I
> spot.
>
I have sent you the patch.

>
> Can you check with objdump or gdb that the methods which don't appear to
> work
> are actually the RISC-V implementation? Look at the disassembly and see if
> it
> looks like you expect.
>
I am exploring for this.

- Vaibhav Gupta

>
> Does this require a patch to newlib as well?
>
> --joel
>
> On Sun, Aug 11, 2019 at 10:49 AM Vaibhav Gupta <vaibhavgupta40 at gmail.com>
> wrote:
>
>> Configure command I used to build BSP:
>> ==============================================
>> $ /home/varodek/development/rtems/kernel/rtems/configure
>> --prefix=/home/varodek/development/rtems/5 --enable-maintainer-mode
>> --target=riscv-rtems5 --enable-rtemsbsp=rv32imac --enable-tests
>> --enable-posix --disable-networking --enable-cxx RISCV_ENABLE_HTIF_SUPPORT=1
>> ==============================================
>> .
>> .
>> .
>> .
>> Qemu command I used to run test:
>> ==============================================
>> $ qemu-system-riscv32 -no-reboot -nographic -machine virt -m 256M -kernel
>> psxfenv01.exe
>> ==============================================
>> .
>> .
>> .
>> .
>> Makefile.am
>> ==============================================
>> + if TEST_psxfenv01
>> + psx_tests += psxfenv01
>> + psxfenv01_SOURCES = psxfenv01/init.c
>> + psxfenv01_CPPFLAGS = $(AM_CPPFLAGS) $(TEST_FLAGS_psxfenv01) \
>> +       $(support_includes)
>> + psxfenv01_LDADD = -lm $(LDADD)
>> + endif
>> +
>> ==============================================
>>
>> On Sun, Aug 11, 2019 at 8:36 PM Vaibhav Gupta <vaibhavgupta40 at gmail.com>
>> wrote:
>>
>>> My code of testsuite:
>>> ===============================================
>>>   /* Test 'FE_DIVBYZERO' */
>>>   puts( "\nDivide by zero and confirm fetestexcept()." );
>>>   a = 0.0;
>>>   b = 1.0;
>>>   c = b/a;
>>>   printf("\n%d",FE_DIVBYZERO);
>>>   fegetexceptflag(&excepts,FE_ALL_EXCEPT);
>>>   printf("\n%d",excepts);
>>>   r = feraiseexcept(FE_DIVBYZERO);
>>>   printf("\n%d\n",r);
>>>   rtems_test_assert( fetestexcept( FE_DIVBYZERO ) );
>>> ==============================================
>>> OUTPUT
>>> ==============================================
>>> Divide by zero and confirm fetestexcept().
>>>
>>> 8
>>> 0
>>> 1
>>> /home/varodek/development/rtems/kernel/rtems/c/src/../../testsuites/psxtests/psxfenv01/init.c:
>>> 84 fetestexcept( FE_DIVBYZERO )
>>> ==============================================
>>> EXPECTED OUTPUT
>>> ==============================================
>>> Divide by zero and confirm fetestexcept().
>>>
>>> 8
>>> 8
>>> 0
>>> ==============================================
>>> - fetestexcept( FE_DIVBYZERO ), should return a non-zero value as
>>> division-by-zero was performed.
>>> .
>>> - feraiseexcept(FE_DIVBYZERO); is also not working. It should return
>>> zero when successful
>>> .
>>> ==============================================
>>>
>>> Thank You
>>> Vaibhav Gupta
>>>
>>> _______________________________________________
>> devel mailing list
>> devel at rtems.org
>> http://lists.rtems.org/mailman/listinfo/devel
>
>
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