Ping on ticket 4728 + patch

[Sebastian Huber]

On 18/10/2022 16:36, Alan Cudmore wrote:
> On Tue, Oct 18, 2022 at 9:55 AM Joel Sherrill<joel at rtems.org>  wrote:
>>
>>
>> On Tue, Oct 18, 2022 at 8:44 AM Alan Cudmore<alan.cudmore at gmail.com>  wrote:
>>> The log does have the error, and I get it when building by hand too:
>>> start.o: in function `.L0 ':
>>> /home/alan/rtems/test-build/rtems-tmp/build/riscv/rv32imafdc/../../../bsps/riscv/shared/start/start.S:86:(.bsp_start_text+0x5c):
>>> relocation truncated to fit: R_RISCV_GPREL_I against symbol
>>> `bsp_section_bss_size' defined in*ABS*  section in
>>> /home/alan/rtems/test-build/rtems-tmp/build/riscv/rv32imafdc/testsuites/samples/minimum.exe
>>> collect2: error: ld returned 1 exit status
>>
>>
>> Hmmm.. that's weird. You should never get a truncation error linking minimum.exe.
>> It should always fit within the BSP's memory and not have any issues with branches
>> or calls needing fixup.
>>
>> Unless the wrong type of branch/jump/call instruction is used at start.S:86, I have
>> no idea.If it's a form that assumes a short distance to the destination but is going
>> to a symbol outside start.S and thus could be further.
> Also, 6 of the samples such as hello.exe link without error.
> The rv32imafdc BSP variant does not have CPU_CFLAGS.
> rv32imafd links fine and has specific CPU_CFLAGS, rv32imafdc does not
> have the flags.
> (I'll research the gcc defaults and architecture differences next..)
> 
> I get a similar error on the frdme310arty BSP but only on a specific
> POSIX testsuite executable:
> 
> start.o: in function `.L0 ':
> 
> /home/alan/rtems/test-build/rtems-tmp/build/riscv/frdme310arty/../../../bsps/riscv/shared/start/start.S:86:(.bsp_start_text+0x28):
> relocation truncated to fit: R_RISCV_GPREL_I against symbol
> `bsp_section_bss_size' defined in*ABS*  section in
> /home/alan/rtems/test-build/rtems-tmp/build/riscv/frdme310arty/testsuites/validation/ts-validation-io-kernel.exe
> 
> collect2: error: ld returned 1 exit status

My off hand guess is that this is a tool chain issue on certain host 
systems. For example, I never got this error on our OpenSUSE machines.

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