Joshua Branson <jbra...@dismail.de> writes: > Janneke Nieuwenhuizen <jann...@gnu.org> writes: > >> Sergey Bugaev writes: >> >> Hello Sergey, >> >>> On Wed, May 17, 2023 at 9:25 PM Janneke Nieuwenhuizen >>> <jann...@gnu.org> wrote: >> >>> I've recently been doing this kind of debugging early boot-up process >>> *a lot*, so maybe I could provide some tips indeed. For getting more >>> lines of output, try console=com0 on gnumach cmdline, and run qemu >>> with -nographic -serial stdio or something like that. >>
>>> Other than that, just attach gdb and see what it crashes on? Like this: >>> >>> $ gdb /path/to/gnumach >>> (gdb) tar rem :1234 >>> (gdb) b i386_exception >>> (gdb) b task_terminate >>> (gdb) b Panic >>> (gdb) add-symbol-file /path/to/rumpdisk.static >>> blah-blah (y/n?) y >>> (gdb) c >> >> [..] >> >> Ah, I had no idea; this is so helpful. Maybe a good idea to have this >> on the website/wiki, right? > > Yes it will be. I will send a patch for it soon. Adding it for my todo > list. Actually where should I add this on the wiki? I think Samuel put some Possibly here: open_issues/debugging_gnumach_startup_qemu_gdb.html > >> >> Greetings, >> Janneke -- Joshua Branson Sent from the Hurd
