cpn: Generic wrapper for injection point

As for the pandaboard to navigate fast to the injection
instruction we need to deliver a hop chain to the fail-client,
this commit adds a generic wrapper for a injection point.
For now we have only the two options hop chain and instruction
offset, so it is activated via a cmake ON/OFF switch.

Change-Id: Ic01a07a30ac386d4316e6d6d271baf1549db966a

src/core/comm/CMakeLists.txt

@@ -7,15 +7,31 @@ set(SRCS
 ## Setup desired protobuf descriptions HERE ##
 set(PROTOS
 	FailControlMessage.proto
-	DatabaseCampaignMessage.proto
+	${CMAKE_CURRENT_BINARY_DIR}/DatabaseCampaignMessage.proto
 	TracePlugin.proto
 )
 
+## Set concrete implementation of InjectionPointMessage
+# ToDo: Define seperate symbol, so it can also be used in other build types
+if(CONFIG_INJECTIONPOINT_HOPS)
+    set(PROTOS ${PROTOS} InjectionPointHopsMessage.proto)
+    set(CONCRETE_INJECTION_POINT InjectionPointHopsMessage.proto)
+else(CONFIG_INJECTIONPOINT_HOPS)
+    set(PROTOS ${PROTOS} InjectionPointStepsMessage.proto)
+    set(CONCRETE_INJECTION_POINT InjectionPointStepsMessage.proto)
+endif(CONFIG_INJECTIONPOINT_HOPS)
+
+# Configure concrete protobuf message to be included by campaign message
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/DatabaseCampaignMessage.proto.in
+       ${CMAKE_CURRENT_BINARY_DIR}/DatabaseCampaignMessage.proto)
+
 #### PROTOBUFS ####
 find_package(Protobuf REQUIRED)
 include_directories(${PROTOBUF_INCLUDE_DIRS})
 include_directories(${CMAKE_CURRENT_BINARY_DIR})
 
+# Let protobuf compiler find defined file (DatabaseCampaignMessage) in binary tree
+set(PROTOBUF_IMPORT_DIRS ${PROTOBUF_IMPORT_DIRS} ${CMAKE_CURRENT_BINARY_DIR})
 PROTOBUF_GENERATE_CPP(PROTO_SRCS PROTO_HDRS ${PROTOS})
 
 add_library(fail-comm ${SRCS} ${PROTO_SRCS} ${PROTO_HDRS})

src/core/comm/DatabaseCampaignMessage.proto.in

@@ -4,14 +4,22 @@ extend google.protobuf.FieldOptions {
     optional bool sql_ignore      = 32383 [ default = false];
 }
 
+
+import "@CONCRETE_INJECTION_POINT@";
+
 message DatabaseCampaignMessage {
     required int32 pilot_id                 = 1 [(sql_primary_key) = true];
     required int32 variant_id               = 2 [(sql_ignore) = true];
     required int32 fspmethod_id             = 3 [(sql_ignore) = true];
+    
+    // ToDo: injection_instr can be deleted if all experiments switched to
+    // using generic InjectionPointMessage
     required int32 injection_instr          = 4 [(sql_ignore) = true];
     optional int32 injection_instr_absolute = 5 [(sql_ignore) = true];
     required int32 data_address             = 6 [(sql_ignore) = true];
     required int32 data_width               = 7 [(sql_ignore) = true];
     required string variant                 = 8 [(sql_ignore) = true];
     required string benchmark               = 9 [(sql_ignore) = true];
+    
+    required InjectionPointMessage injection_point	= 10 [(sql_ignore) = true];
 }

src/core/comm/InjectionPointHopsMessage.proto

@@ -0,0 +1,23 @@
+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;
+	
+	// Repeated groups can't be defined as notempty, 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;
+	}
+}

src/core/comm/InjectionPointStepsMessage.proto

@@ -0,0 +1,3 @@
+message InjectionPointMessage {
+	required int32 injection_instr = 1;
+}