On 04.12.2019 19:11, Jason Thorpe wrote:
>
>
>> On Dec 4, 2019, at 8:47 AM, Kamil Rytarowski <n54%gmx.com@localhost> wrote:
>>
>> Today it's missing.. do we need it in core files?
>
> Seems like you would absolutely need it in core files, otherwise the debugger won't know what it is when performing a post-mortem.
>
> If we add a ptrace accessor a'la Linux, then it fits nicely into the existing model we have for ELF core files:
>
> * We also use ptrace(2) request numbers (the ones that exist in
> * machine-dependent space) to identify register info notes. The
> * info in such notes is in the same format that ptrace(2) would
> * export that information.
>
> -- thorpej
>
OK, I will add a core(5) file addition with TLS base
("PT_GET_THREAD_AREA@nnn").
While I will also include a thread name: PT_[SG]ET_THREAD_NAME.
We currently use sysctl to retrieve it from a living process, but miss
in core files. Today using sysctl is more complex than it needs to be
[1] and there is no direct translation to core(5) files.
[1]
https://github.com/llvm/llvm-project/blob/master/lldb/source/Plugins/Process/NetBSD/NativeThreadNetBSD.cpp#L158
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