[RFC PATCH 0/9] s390: Initial support to generate SFrame info from CFI directives in assembler

[Indu Bhagat]

On 2/23/24 13:16, Indu Bhagat wrote:
> Hi Jens,
> 
> On 2/23/24 09:07, Jens Remus wrote:
>> This patch series adds initial support to the assembler on s390x to
>> generate SFrame stack trace information from CFI directives. It is
>> largely based on the respective AArch64 support.
>>
>> Please be aware that the SFrame support for s390x provided by patch 9
>> of this series still has some open issues, which need to be addressed.
>> Any ideas or assistance to overcome the current SFrame limitations
>> listed below and in the patch description are very welcome.
>>
>> Patches 1-8 are generic cleanups and enhancements to the generation
>> of SFrame information in the assembler. Patch 9 adds the initial s390x
>> support and is purely RFC.
>>
>>
>> Patches 1-3 are minor cleanups/enhancements to the existing SFrame
>> support on AArch64 and x86 AMD64.
>>
>> Patch 4 enables readelf/objdump to dump the SFrame fixed offsets from
>> CFA to the frame pointer (FP) and return address (RA).
>>
>> Patch 5 enhances an SFrame warning message to print the human readable
>> DWARF call frame instruction name.
>>
>> Patch 6 and 7 resolve issues that cause the assembler to either generate
>> bad SFrame FDE or to silently skip it. Both issues would be triggered by
>> s390-specific SFrame error test cases introduced by patch 9.
>>
>> Patch 8 adds verbose assembler warning messages when generation of
>> SFrame FDE is skipped.
>>
> 
> Thanks for fixing issues and enhancing SFrame handling in Binutils.
> 

Hi Jens,

I think it will be great to split this series and send a V2 for the 
Patches 1-8 from your series. What do you think ?

Thanks
Indu