diff options
Diffstat (limited to 'csim/sim.h')
| -rw-r--r-- | csim/sim.h | 22 |
1 files changed, 16 insertions, 6 deletions
@@ -24,7 +24,11 @@ #define OP_NAND 3 // 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. typedef int t_id; typedef struct { // a variable in the simulator @@ -34,8 +38,11 @@ typedef struct { // a variable in the simulator } t_variable; typedef struct { - t_value val; - t_id source_var; // if source_var == -1 then it's a direct value, else it's that variable + 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; typedef struct { @@ -93,20 +100,23 @@ typedef struct { // machine = execution instance typedef union { - t_value r_val; - t_value *mem_val; + t_value RegVal; + t_value *RamData; } t_mem_reg_data; typedef struct { t_program *prog; - t_value *var_values; - t_mem_reg_data *mem_data; + t_value *var_values; // indexed by variable ID + t_mem_reg_data *mem_data; // indexed by equation number } 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); void read_inputs(t_machine *m, FILE *stream); void machine_step(t_machine *m); |