On Sat, Jun 15, 2002 at 01:29:56PM -0700, Justin Wojdacki wrote: > Daniel Jacobowitz wrote: > > > > On Sat, Jun 15, 2002 at 01:01:24PM -0700, Justin Wojdacki wrote: > > > > > > How does GDB work under MIPS Linux? I'm trying to do a bring-up of an > > > embedded device, and it looks like the kernel is missing the code > > > needed to handle software breakpoints. Are there patches that need to > > > be applied to the kernel? > > > > No. If you use a current GDB (I recommend 5.2 or CVS) it should work > > just fine, if you are using a recent kernel (you didn't mention what > > version you were looking at). > > > > -- > > Daniel Jacobowitz Debian GNU/Linux Developer > > MontaVista Software Carnegie Mellon University > > Sorry, I'm using the 2.4.10 kernel and GDB 5.2. What I see happening > is the BREAK 5 instruction from a software breakpoint is hit, and the > kernel loops continuously on that, as it appears to have no way to > deal with that exception. I'm running gdbserver on the MIPS target and > gdb as a cross-debugger on an x86 host (RedHat 7.1). To me, it looks > like when the debugging breakpoint is hit, gdbserver should get > scheduled to run and handle the breakpoint, but instead the child > keep's getting scheduled. Software breakpoints have worked at least as far back as 2.4.2. This most likely means that the exception handling for your board is broken. -- Daniel Jacobowitz Debian GNU/Linux Developer MontaVista Software Carnegie Mellon University
