Kris Warkentin has reported some good news regarding gdb port:
I now have head branch gdb targetting Neutrino working for Windows, Solaris, Linux and Neutrino hosts with Arm, Mips, PowerPC, SH4, and i386 targets. Ironically, Mips turned out to be less painful than PowerPC is turning out to be. Who'da thunk it?
The cool thing about all this is that we will have a more current gdb!