Has anyone encountered a standalone gdb server? That is gdb server that runs on a bare metal.
I've been looking for sources to build one. Doesn't need to be ARM, but that might help.
Maybe someone has come across a document explaining how gdb server really works?
(It might help in reading the 'standard' gdb server code.)
I understand that 'stub' means "gdb server" linked into the executable, but I'd like to have a server with which I could upload programs onto the board for debugging through the network or serial IF.
My main concern is attaching to the program to be debugged, when there is no OS (and no processes).
I have not tried too but normally it's using U-Boot .
Many Git exists depending on the platform . But we must have a track here
http://www.denx.de/wiki/U-Boot/Custodians
Good find!
As far as I understand, U-Boot allows you to load the program via Ethernet and remote-debug it; but does it need an operating system in order to work, or does it act fully as a bootloader and remote debugger ?
you'll have to load it an image kernel. a small rootfs with some binary but not necessarly the full os.
I don't try it like that, but small kernel image can be found who are using lowest memory.