?. Report why the target halted.

c, C, s and S. Continue or step the target (possibly with a particular signal). A minimal implementation may not support stepping or continuing with a signal.

D. Detach from the client.

g and G. Read or write general registers.

qC and H. Report the current thread or set the thread for subsequent operations. The significance of this will depend on whether the target supports threads.

k. Kill the target. The semantics of this are not clearly defined. Most targets should probably ignore it.

m and M. Read or write main memory.

p and P. Read or write a specific register.

qOffsets. Report the offsets to use when relocating downloaded code.

qSupported. Report the features supported by the RSP server. As a minimum, just the packet size can be reported.

qSymbol:: (i.e. the qSymbol packet with no arguments). Request any symbol table data. A minimal implementation should request no data.

vCont?. Report what vCont actions are supported. A minimal implementation should return an empty packet to indicate no actions are supported.

X. Load binary data.

z and Z. Clear or set breakpoints or watchpoints.