[lldb-dev] Port LLDB to ppc64le (ABIv2) on linux

[Gustavo Serra Scalet via lldb-dev]

Hi Pavel,

> -----Original Message-----
> From: Pavel Labath [mailto:labath at google.com]
> Sent: quinta-feira, 6 de julho de 2017 07:13
> To: Gustavo Serra Scalet <gustavo.scalet at eldorado.org.br>
> Cc: lldb-dev at lists.llvm.org
> Subject: Re: [lldb-dev] Port LLDB to ppc64le (ABIv2) on linux
> 
> Hi Gustavo,
> 
> I don't see anything which should prevent you from doing that.
> 
> Probably the first place you should look at is
> "source/Plugins/Process/Linux/NativeRegisterContext_***". This is the
> thing which defines what a "register" is and how to read/write it, and
> it's the main thing you will need to implement.

Great. I noticed these classes missing on link time so I'm taking a closer look.

Thanks

> 
> On 5 July 2017 at 20:13, Gustavo Serra Scalet via lldb-dev <lldb-
> dev at lists.llvm.org> wrote:
> > Hi,
> >
> > I'm interested in porting LLDB to PowerPC 64 little endian (e.g:
> POWER8 machines) on Linux platform but before starting such work, I
> wanted to know if somebody is already doing it or also if there is
> anything prohibitive in doing so (Probably relevant to this question:
> clang supports POWER8 already, which is good).
> >
> > The interesting resources I found at the moment are: the special debug
> registers as described on the ISA [1]; dealing with Ptrace API[2]; and
> also a presentation pointing out how LLDB was ported to MSP430
> architecture[3].
> >
> > Are there any other resources you'd recommend? I tried searching in
> the mailing list but I didn't find more relevant information.
> >
> > Thanks. Comments are welcome :-)
> >
> > [1]
> > https://openpowerfoundation.org/?resource_lib=power-isa-version-3-0
> > (Book III, chapter 8, page 1103) [2]
> > http://www.alexonlinux.com/how-debugger-works
> > [3] http://llvm.org/devmtg/2016-03/Tutorials/LLDB-tutorial.pdf
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