Hi Greg, Thanks a lot for your reply, please find below my answers.
> You can install new python commands that can do the job to work out the > details. > > http://lldb.llvm.org/python-reference.html > > See the section named "CREATE A NEW LLDB COMMAND USING A PYTHON > FUNCTION". > > You can basically install a new "intel" command and parse all of the options > "show mpx-bounds ..." or "set mpx-bounds ..." from within this new command. > You can use the public LLDB API to look through the process and do things. Let > me know if you need any help with this. There is also a API to add custom > commands from C++ plug-ins. Enrico Granata did this work and can answer > more questions on that. Either way, both commands (python and C++ plug-ins) > have access to the public API for LLDB, so the code you will write will use > the > same API. So I would stick with python for now to get things working. > I think I would rather start right away with the C++ approach. If I understand correctly, it means to create a specific Intel plugin under the directory source/Plugins and use the LLDB API to add the custom command. > Some questions for you: > - How do plan on detecting that you have an intel processor? I thought of checking if the target architecture is either llvm::Triple::x86 or llvm::Triple::x86_64. Do you think there is a better approach to this? > - Do you need access to any process registers? If so, are these registers > thread > specific? Are these registers available currently on linux and MacOS? I only need to access the MPX configuration register, BNDCFGU. As far as I know, MacOS doesn't have MPX support, so I also didn't implement the MPX support for MacOS in LLDB, which means it is only available in Linux at the moment. > - How do you locate the BT? (or do you even need to?). Is there symbol? Can > you extract all values in the bounds table once you locate it? > The bound tables are allocated contiguously in the process memory, starting from the Bound Directory address which is stored in the BNDCFGU register. Therefore, in the plugin I only need to access this register, do the appropriate calculations and then access the process memory to get the requested bound table entry. - Val Intel Deutschland GmbH Registered Address: Am Campeon 10-12, 85579 Neubiberg, Germany Tel: +49 89 99 8853-0, www.intel.de Managing Directors: Christin Eisenschmid, Christian Lamprechter Chairperson of the Supervisory Board: Nicole Lau Registered Office: Munich Commercial Register: Amtsgericht Muenchen HRB 186928 _______________________________________________ lldb-dev mailing list lldb-dev@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev
