From 05749abf8efdcaae6afd9f3dd087df475e5e93ad Mon Sep 17 00:00:00 2001
From: Alex AUVOLAT <alex.auvolat@ens.fr>
Date: Fri, 8 Nov 2013 15:51:54 +0100
Subject: [WIP] Change dumb netlist format in scheduler and simulator.

---
 csim/sim.h | 75 ++++++++++++++++++++++++++++----------------------------------
 1 file changed, 34 insertions(+), 41 deletions(-)

(limited to 'csim/sim.h')

diff --git a/csim/sim.h b/csim/sim.h
index 8e35c45..8b4a726 100644
--- a/csim/sim.h
+++ b/csim/sim.h
@@ -6,16 +6,14 @@
 #include <stdio.h>
 
 // Gate types
-#define C_ARG 0
-#define C_REG 1
-#define C_NOT 2
-#define C_BINOP 3
-#define C_MUX 4
-#define C_ROM 5
-#define C_RAM 6
-#define C_CONCAT 7
-#define C_SLICE 8
-#define C_SELECT 9
+#define C_COPY 0
+#define C_NOT 1
+#define C_BINOP 2
+#define C_MUX 3
+#define C_ROM 4
+#define C_CONCAT 5
+#define C_SLICE 6
+#define C_SELECT 7
 
 // Binary operators
 #define OP_OR 0
@@ -25,7 +23,6 @@
 
 // Data structures
 
-
 // Use 64-bit ints as bit arrays. Bit index 0 is bitmask 1, bit index 1 is bitmask 2, etc.
 typedef unsigned long long int t_value;
 // Identifier for the variables of the circuit.
@@ -38,51 +35,47 @@ typedef struct {		// a variable in the simulator
 } t_variable;
 
 typedef struct {
-	t_value mask;				// if direct value, mask = all possible bits. Else mask = 0
-	union {
-		t_value Val;
-		t_id SrcVar;		// if source_var == -1 then it's a direct value, else it's that variable
-	};
-} t_arg;
+	t_id dest, source;
+} t_reg;
+
+typedef struct {
+	t_id dest;
+	int addr_size, word_size;
+	t_id read_addr, write_enable, write_addr, data;
+} t_ram;
 
 typedef struct {
 	int type;
 	t_id dest_var;
 	union {
 		struct {
-			t_arg a;
-		} Arg;
-		struct {
-			t_id var;
-		} Reg;
+			t_id a;
+		} Copy;
 		struct {
-			t_arg a;
+			t_id a;
 		} Not;
 		struct {
 			int op;
-			t_arg a, b;
+			t_id a, b;
 		} Binop;
 		struct {
-			t_arg a, b, c;
+			t_id a, b, c;
 		} Mux;
 		struct {
 			int addr_size, word_size;
-			t_arg read_addr;
+			t_id read_addr;
 		} Rom;
 		struct {
-			int addr_size, word_size;
-			t_arg read_addr, write_enable, write_addr, data;
-		} Ram;
-		struct {
-			t_arg a, b;
+			t_id a, b;
+			int shift;
 		} Concat;
 		struct {
 			int begin, end;
-			t_arg source;
+			t_id source;
 		} Slice;
 		struct {
 			int i;
-			t_arg source;
+			t_id source;
 		} Select;
 	};
 } t_equation;
@@ -90,31 +83,31 @@ typedef struct {
 
 typedef struct {
 	int n_vars, n_inputs, n_outputs;
+	
 	t_variable *vars;
 	t_id *inputs, *outputs;
 
+	int n_regs, n_rams;
+	t_reg *regs;
+	t_ram *rams;
+
 	int n_eqs;
 	t_equation *eqs;
 } t_program;
 
 // machine = execution instance
 
-typedef union {
-	t_value RegVal;
-	t_value *RamData;
-} t_mem_reg_data;
-
 typedef struct {
 	t_program *prog;
 	t_value *var_values;		// indexed by variable ID
-	t_mem_reg_data *mem_data;	// indexed by equation number
+
+	t_value *reg_data;		// indexed by number in register list
+	t_value **ram_data;		// indexed by number in ram list
 } t_machine;
 
 
 // The functions for doing stuff with these data structures
 
-t_value read_bool(FILE *stream, t_value* mask);
-
 t_program *load_dumb_netlist(FILE *stream);
 
 t_machine *init_machine(t_program *p);
-- 
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