Martin, I seem to have confused everyone (including myself)... I'm also talking about user mode... my references to the kernel stub code only refer to the single_step() function... I borrowed and adapted it for use in gdbserver... for user mode. Sorry, I'll go and stand in the corner for a while... Ian Martin Rivers wrote: > > Ian, > > I'm confused. The gdbserver stuff I gave you was all directed at user mode > stuff too. I don't do any kernel debug with gdbserver. > > martin > > > > > Fabrice Bellard wrote: > > > > > > Hi! > > > > > > I was speaking about gdb support in user mode, not the gdb stub in the > > > kernel. Does someone use gdb to debug user space programs on linux-mips ? > > > Maybe someone added the PTRACE_SINGLESTEP command of the ptrace syscall in > > > recent mips kernel, but I do not have it in my kernel (linux-2.4.0 on sgi > > > site). > > > > > > I patched gdb 5.0 so that single step on mips is correctly supported in > > > user mode. I also modified gdbserver so that it works when you debug mips > > > code in user mode. > > > > > > > <snip> > > > > Hi Fabrice, > > > > I know you meant user mode... it's just that I had some success adapting > > the kernel stub code for use in Martin's gdbserver for debugging user > > mode code. I guess now we have 2 gdbservers :-) > > > > Best regards, > > Ian