Dave Gomboc
2015-Jun-30 05:52 UTC
[LLVMdev] How to have LLVM/Clang target an currently unsupported embedded OS?
I am writing to inquire re: the scope of the effort that would be required in order to augment LLVM (and/or clang++) to be able to generate from modern C++ source code a set of Microware OS-9 ROF (relocatable object format) object files to be subsequently linked (by the existing linker from Microware) and executed by a 68k-based processor running the OS-9 operating system. Material posted online such as http://oldcomputers.dyndns.org/public/pub/manuals/os9/allen_bradley/77165106.pdf and http://geneslinuxbox.net:6309/gene/toolshed/casm/HTMLHelp/os9_rof.htm give some insight into the specifics of the ROF linker format. Could such a project reasonably be undertaken by a CS Ph.D. student without significant prior familiarity with LLVM and Clang? If not, are there firms that specialize in such work? I understand that Motorola 68000-based targets are not presently available as an official LLVM back end. In this regard, does anyone know if what is online at http://sf.net/projects/llvm68k/ is presently in good shape? What would be necessary besides a volunteer to conduct automated nightly testing of the backend in order for such a back-end to become officially supported? The overarching purpose of the task is to make available clang++'s high level of C++ standard conformance to this unusual platform (which must be used due to regulation). I would also be interested in other potential approaches that might be simpler to successfully execute. FYI, the current cross-compiler that is used to target the platform supports C89, at least some parts of C99, but has only basic (pre-standard) C++, e.g., it lacks SFINAE support. Thank you in advance for your advice, Dave Gomboc
Dennis Luehring
2015-Jul-03 04:31 UTC
[LLVMdev] How to have LLVM/Clang target an currently unsupported embedded OS?
did you get that reply (posted under wrong topic) http://lists.cs.uiuc.edu/pipermail/llvmdev/2015-June/087350.html Am 30.06.2015 um 07:52 schrieb Dave Gomboc:> I am writing to inquire re: the scope of the effort that would be > required in order to augment LLVM (and/or clang++) to be able to > generate from modern C++ source code a set of Microware OS-9 ROF > (relocatable object format) object files to be subsequently linked (by > the existing linker from Microware) and executed by a 68k-based > processor running the OS-9 operating system. > > Material posted online such as > http://oldcomputers.dyndns.org/public/pub/manuals/os9/allen_bradley/77165106.pdf > and http://geneslinuxbox.net:6309/gene/toolshed/casm/HTMLHelp/os9_rof.htm > give some insight into the specifics of the ROF linker format. > > Could such a project reasonably be undertaken by a CS Ph.D. student > without significant prior familiarity with LLVM and Clang? If not, > are there firms that specialize in such work? > > I understand that Motorola 68000-based targets are not presently > available as an official LLVM back end. In this regard, does anyone > know if what is online at http://sf.net/projects/llvm68k/ is presently > in good shape? What would be necessary besides a volunteer to conduct > automated nightly testing of the backend in order for such a back-end > to become officially supported? > > The overarching purpose of the task is to make available clang++'s > high level of C++ standard conformance to this unusual platform (which > must be used due to regulation). I would also be interested in other > potential approaches that might be simpler to successfully execute. > > FYI, the current cross-compiler that is used to target the platform > supports C89, at least some parts of C99, but has only basic > (pre-standard) C++, e.g., it lacks SFINAE support. > > Thank you in advance for your advice, > Dave Gomboc > _______________________________________________ > LLVM Developers mailing list > LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev