ljmf00 added a comment. In D117928#3262874 <https://reviews.llvm.org/D117928#3262874>, @jingham wrote:
> Ah, I think your confusion is that you missed the “Remote” part of all the > classes in lldb that start with “GDB”. They are so called because they use > the “gdb remote serial protocol” to communicate with the debug monitor, not > because they have anything to do with gdb the debugger. That’s a protocol > for communication between a debugger and a debug monitor of some sort, > devised by people working on gdb aeons ago: > > https://sourceware.org/gdb/onlinedocs/gdb/Remote-Protocol.html > > In lldb’s case, that debug monitor can be debugserver (the default on Darwin > systems) lldb-server (the default on Linux systems) or anything else that > speaks the gdb remote protocol (a lot of JTAG parts come with a gdb remote > protocol stub) including potentially gdb’s implementation of the monitor: > gdbserver... > > But there’s no shared code between gdb & lldb, just a shared communication > protocol. > > Jim Thanks, this makes much more sense in my brain and gives me much more control to debug this. I'm digging a bit more. I'm tracing Linux kernel syscalls to check if data is sent correctly. At first glance, it seems fine to me, so maybe it's a `ptrace` issue? I need to investigate a bit more to say that tho. `strace` say me this: ptrace(PTRACE_SETREGSET, 29772, NT_FPREGSET, {iov_base={cwd=0x37f, swd=0, ftw=0, fop=0, rip=0, rdp=0, mxcsr=0x1f80, mxcr_mask=0, st_space=[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], xmm_space=[0xa090807, 0xe0d0c0b, 0x1211100f, 0x16151413, 0xa090807, 0xe0d0c0b, 0x1211100f, 0x16151413, 0xa090807, 0xe0d0c0b, 0x1211100f, 0x16151413, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...], padding=[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]}, iov_len=512}) = 0 ptrace(PTRACE_GETREGSET, 29772, NT_FPREGSET, {iov_base={cwd=0x37f, swd=0, ftw=0, fop=0, rip=0, rdp=0, mxcsr=0x1f80, mxcr_mask=0, st_space=[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], xmm_space=[0xa090807, 0xe0d0c0b, 0x1211100f, 0x16151413, 0xa090807, 0xe0d0c0b, 0x1211100f, 0x16151413, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...], padding=[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]}, iov_len=512}) = 0 First call when setting xmm2 and second call when getting the current registers. Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D117928/new/ https://reviews.llvm.org/D117928 _______________________________________________ lldb-commits mailing list lldb-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-commits
