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diff --git a/website/content/en/status/report-2021-10-2021-12/lldb.adoc b/website/content/en/status/report-2021-10-2021-12/lldb.adoc new file mode 100644 index 0000000000..6ed5b3d60b --- /dev/null +++ b/website/content/en/status/report-2021-10-2021-12/lldb.adoc @@ -0,0 +1,40 @@ +=== LLDB Debugger Improvements + +Links: + +link:https://www.moritz.systems/blog/freebsd-kgdb-support-in-lldb/[Moritz Systems Project Description] URL: link:https://www.moritz.systems/blog/freebsd-kgdb-support-in-lldb/[https://www.moritz.systems/blog/freebsd-kgdb-support-in-lldb/] + +link:https://www.moritz.systems/blog/lldb-serial-port-communication-support/[Progress Report 3] URL: link:https://www.moritz.systems/blog/lldb-serial-port-communication-support/[https://www.moritz.systems/blog/lldb-serial-port-communication-support/] + +link:https://www.moritz.systems/blog/lldb-freebsd-kernel-core-dump-support/[Progress Report 4] URL: link:https://www.moritz.systems/blog/lldb-freebsd-kernel-core-dump-support/[https://www.moritz.systems/blog/lldb-freebsd-kernel-core-dump-support/] + +link:https://github.com/moritz-systems/llvm-project[LLVM Git Repository] URL: link:https://github.com/moritz-systems/llvm-project[https://github.com/moritz-systems/llvm-project] + +link:https://github.com/moritz-systems/libfbsdvmcore[libfbsdvmcore Git Repository] URL: link:https://github.com/moritz-systems/libfbsdvmcore[https://github.com/moritz-systems/libfbsdvmcore] + +Contact: Kamil Rytarowski <kamil@moritz.systems> + +Contact: Michał Górny <mgorny@moritz.systems> + +According to the upstream description, "LLDB is a next generation, +high-performance debugger. It is built as a set of reusable components which +highly leverage existing libraries in the larger LLVM Project, such as the +Clang expression parser and LLVM disassembler." + +FreeBSD includes LLDB in the base system. At present, it has some limitations +compared to the GNU GDB debugger, and does not yet provide a complete +replacement. This project spans from July 2021 to January 2022 and aims to +make LLDB suitable for debugging FreeBSD kernels. + +The earlier part of the project was focused on improving compatibility between +LLDB and other servers implementing the GDB Remote Protocol. This was followed +by implementing a fully-featured serial port support and then support +for FreeBSD kernel core dumps (vmcores). + +The LLDB client gained much improved support for connecting to the remote +server over a serial port, and the LLDB server gained support for accepting +communication over a serial port. This opened the possibility of using LLDB +to debug embedded devices that use the RS232 interface. It can also aid +debugging kernels on regular PCs as it does not rely on the network stack. + +Support for FreeBSD vmcores has also been added to LLDB. This makes it +possible to inspect the crashed kernel state without having to resort to KGDB +or manually convert the vmcore into the standard ELF format supported by LLDB. + +The introduced changes are expected to be shipped with LLDB 14.0. + +Sponsor: The FreeBSD Foundation |