syntax = "proto2";

message InjectionPointMessage {
	// Costs of the hop chain on the PandaBoard
	// ToDo: Could be eliminated, but it is nice for evaluation
	optional uint32 costs = 3;

	// If checkpoint must be used for this hop chain, id is set properly
	optional uint32 checkpoint_id = 1;

	// If we need to know the target dynamic instruction offset,
	// here it is
	optional uint32 target_trace_position = 4;


	// Repeated groups can't be defined as non-empty, so a manual
	// non-empty check is required at usage

	// As we assume hops to always watch addresses of length 1, we
	// don't encode the length in here
	repeated group Hops = 2 {
		required uint64 address = 1;
		enum AccessType {
			EXECUTE = 1;
			READ = 2;
			WRITE = 3;
		}
		required AccessType accesstype = 2;
	}
}