diff --git a/sim/compiled_sim.dll b/sim/compiled_sim.dll
index debc1a5..4478d89 100644
Binary files a/sim/compiled_sim.dll and b/sim/compiled_sim.dll differ
diff --git a/sim/compiled_sim_gates.c b/sim/compiled_sim_gates.c
index 659abc0..66cb5ee 100644
--- a/sim/compiled_sim_gates.c
+++ b/sim/compiled_sim_gates.c
@@ -1,17 +1,21 @@
-
-GATEFUNC(Diode)   { setport(2, getport(1)); }
-GATEFUNC(Not)     { setport(2, !getport(1)); }
-
-////
+// Auto-generated by gencfuncs.lua
 
 enum GateFuncs {
 	GateFunc_None,
-	GateFunc_Diode = 1,
-	GateFunc_Not   = 2,
+	GateFunc_Diode,
+	GateFunc_Not,
 };
 
+GATEFUNC(Diode) {
+	setport(2, getport(1));
+}
+GATEFUNC(Not) {
+	setport(2, !getport(1));
+}
+
 GateFunc sim_logic_functions[] = {
 	0,
 	GATEFUNCID(Diode),
 	GATEFUNCID(Not),
 };
+
diff --git a/sim/compiled_sim_gates.lua b/sim/compiled_sim_gates.lua
new file mode 100644
index 0000000..70611ae
--- /dev/null
+++ b/sim/compiled_sim_gates.lua
@@ -0,0 +1,13 @@
+-- Auto-generated by gencfuncs.lua
+
+local cFuncsByName = {
+	["diode"] = 1,
+	["not"] = 2,
+}
+
+local cDataSizeByName = {
+	["diode"] = 0,
+	["not"] = 0,
+}
+
+return cFuncsByName, cDataSizeByName
diff --git a/sim/gatedef.lua b/sim/gatedef.lua
index 198a486..4a2c60c 100644
--- a/sim/gatedef.lua
+++ b/sim/gatedef.lua
@@ -7,7 +7,9 @@ GateDefinition = {
 	input = function(gate, argv) end
 }
 
-function GateDefinition.new(objref, name, description, init, logic, input, global, ports, datasize, logicfuncc)
+local cFuncsByName, cDataSizeByName = require("compiled_sim_gates")
+
+function GateDefinition.new(objref, name, description, init, logic, input, global, ports)
 	
 	name = collapseescape(name)
 	init  = collapseescape(init)
@@ -23,8 +25,8 @@ function GateDefinition.new(objref, name, description, init, logic, input, globa
 		ports = ports or {},
 		num_in_ports = 0,
 		num_out_ports = 0,
-		data_size_c = datasize,
-		logic_function_c = logicfuncc,
+		data_size_c = cDataSizeByName[name:lower()] or 0,
+		logic_function_c = cFuncsByName[name:lower()] or 0,
 	}
 	
 	local initfunc = loadstring(tostring(init))
diff --git a/sim/gencfuncs.lua b/sim/gencfuncs.lua
index 4de9554..e477946 100644
--- a/sim/gencfuncs.lua
+++ b/sim/gencfuncs.lua
@@ -1,24 +1,63 @@
+local c_code = [[
+// Auto-generated by gencfuncs.lua
 
-local luatoc_subs = {
-	{"Gate%.setportstate%(gate, *", "setport%("},
-	{"Gate%.getportstate%(gate, *", "getport%("},
-	{"~=", "!="},
-	{"!= *0", ""},
-	{"elseif", "els2 if"},
-	{"if", "if("},
-	{"else", "} else {"},
-	{"els2", "else"},
-	{"end", "}"},
-	{"then", ") {"},
-	{"return function(gate)", "GATEFUNC"},
+enum GateFuncs {
+	GateFunc_None,
+%s
+};
+
+%s
+
+GateFunc sim_logic_functions[] = {
+	0,
+%s
+};
+
+]]
+
+local lua_code = [[
+-- Auto-generated by gencfuncs.lua
+
+local cFuncsByName = {
+%s
 }
-local function luatoc(f)
-	for i, sub in ipairs(luatoc_subs) do
-		f = f:gsub(sub[1], sub[2])
-	end
-	return f
+
+local cDataSizeByName = {
+%s
+}
+
+return cFuncsByName, cDataSizeByName
+]]
+local function writeFile(fn, data)
+	local f = io.open(fn, "wb") or error("Could not open file for writing: "..fn)
+	f:write(data)
+	f:close()
 end
 
-local function tstogatedata(ts)
+local function exportGates(gates)
+	local gateList = {}
+	local gateFuncList = {}
+	local gateSizeList = {}
+	for k, gate in pairs(gates) do
+		table.insert(gateList, gate.name or error("gate "..k.." has no name"))
+		table.insert(gateFuncList, gate.func or error("gate "..gate.name.." has no c function"))
+		table.insert(gateSizeList, gate.size or 0)
+	end
 	
+	local function map(t, f) local u = {}; for i, v in ipairs(t) do table.insert(u, f(v, i)) end; return u; end
+	writeFile("compiled_sim_gates.c", string.format(c_code,
+		table.concat(map(gateList, function(v, i) return string.format("\tGateFunc_%s,", v) end), "\n"),
+		table.concat(map(gateList, function(v, i) return string.format("GATEFUNC(%s) {\n\t%s\n}", v, gateFuncList[i]:gsub("\n", "\n\t"):gsub("\n+$", ""):gsub("^\n+", "")) end), "\n"),
+		table.concat(map(gateList, function(v, i) return string.format("\tGATEFUNCID(%s),", v) end), "\n")
+	))
+	writeFile("compiled_sim_gates.lua", string.format(lua_code,
+		table.concat(map(gateList, function(v, i) return string.format("\t[\"%s\"] = %i,", v:lower(), i) end), "\n"),
+		table.concat(map(gateList, function(v, i) return string.format("\t[\"%s\"] = %i,", v:lower(), gateSizeList[i]) end), "\n")
+	))
 end
+
+local gates = {
+	{ name = "Diode", func = "setport(2, getport(1));"  },
+	{ name = "Not"  , func = "setport(2, !getport(1));" },
+}
+exportGates(gates)
diff --git a/sim/network.lua b/sim/network.lua
index e11e69a..d1759b5 100644
--- a/sim/network.lua
+++ b/sim/network.lua
@@ -75,12 +75,10 @@ function network_update()
 				local logic = data[i+5]
 				local input = data[i+6]
 				local global = data[i+7]
-				local datasize = tonumber(data[i+8])
-				local logicfuncc = tonumber(data[i+9])
-				local numports = tonumber(data[i+10])
-				local ports = {}
-				i = i + 10
+				local numports = tonumber(data[i+8])
+				i = i + 8
 				
+				local ports = {}
 				for a = i+1, numports*5+i, 5 do
 					local portd = {
 						type = tonumber(data[a]),
@@ -94,7 +92,7 @@ function network_update()
 					if not portd.direction then print(line) end
 				end
 				
-				local definition = GateDefinition.new(objref, name, desc, init, logic, input, global, ports, datasize, logicfuncc)
+				local definition = GateDefinition.new(objref, name, desc, init, logic, input, global, ports)
 				Simulation.addgatedefinition(sim, definition)
 				
 				i = i + numports*5