Hi, > -----Original Message----- > From: Howard Hellyer [mailto:hhell...@uk.ibm.com] > Sent: quinta-feira, 6 de julho de 2017 09:59 > To: Gustavo Serra Scalet <gustavo.sca...@eldorado.org.br> > Cc: lldb-dev@lists.llvm.org > Subject: Re: [lldb-dev] Port LLDB to ppc64le (ABIv2) on linux > > Hi Gustavo, > > Were you interested in support for live debugging via ptrace or reading > from core files? (Or both!)
Mainly live debugging, but I have the feeling that implementing post-mortem wouldn't be such a hassle afterwards. (register read/write, stack walk... they would all be done at this point). > > I did have a look at what it would take to add support for Power PC > little endian core files. I didn't seem too bad as the existing code for > PPC 64 support just needed to be aware of LE as well. I may be able to > resurrect the patch if master hasn't diverged too much. > > Live debugging looked a bit more complicated but that's probably because > most of my experience has been with post-mortem debugging. I think I > stopped work on the core file support because I didn't have the time to > learn about the live debugging side and it didn't seem to make sense to > add core file support without live debug. Wait. As far as I understood, LLDB already supports ppc64 big endian, right? (particularly the ppc970 model) Plenty of things changed since then but I guess I can use it as a reference (despite endianness, of course). > > Howard Hellyer > J9 RAS Developer > IBM Runtime Technologies, IBM Systems > > > "lldb-dev" <lldb-dev-boun...@lists.llvm.org> wrote on 05/07/2017 > 20:13:02: > > > From: Gustavo Serra Scalet via lldb-dev <lldb-dev@lists.llvm.org> > > To: "lldb-dev@lists.llvm.org" <lldb-dev@lists.llvm.org> > > Date: 05/07/2017 20:13 > > Subject: [lldb-dev] Port LLDB to ppc64le (ABIv2) on linux Sent by: > > "lldb-dev" <lldb-dev-boun...@lists.llvm.org> > > > > 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 > > <https://openpowerfoundation.org/?resource_lib=power-isa-version-3-0> > > (Book III, chapter 8, page 1103) > > [2] http://www.alexonlinux.com/how-debugger-works > > <http://www.alexonlinux.com/how-debugger-works> > > [3] http://llvm.org/devmtg/2016-03/Tutorials/LLDB-tutorial.pdf > > <http://llvm.org/devmtg/2016-03/Tutorials/LLDB-tutorial.pdf> > > _______________________________________________ > > lldb-dev mailing list > > lldb-dev@lists.llvm.org > > http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev > > <http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev> > > Unless stated otherwise above: > IBM United Kingdom Limited - Registered in England and Wales with number > 741598. > Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 > 3AU _______________________________________________ lldb-dev mailing list lldb-dev@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev
