consistency_enforcer_gadget.hpp

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#ifndef CONSISTENCY_ENFORCER_GADGET_HPP_
#define CONSISTENCY_ENFORCER_GADGET_HPP_
 
#include <libsnark/gadgetlib1/gadgets/cpu_checkers/tinyram/components/tinyram_protoboard.hpp>
 
namespace libsnark
{
 
template<typename FieldT>
class consistency_enforcer_gadget : public tinyram_standard_gadget<FieldT>
{
private:
    pb_variable<FieldT> is_register_instruction;
    pb_variable<FieldT> is_control_flow_instruction;
    pb_variable<FieldT> is_stall_instruction;
 
    pb_variable<FieldT> packed_desidx;
    std::shared_ptr<packing_gadget<FieldT>> pack_desidx;
 
    pb_variable<FieldT> computed_result;
    pb_variable<FieldT> computed_flag;
    std::shared_ptr<inner_product_gadget<FieldT>> compute_computed_result;
    std::shared_ptr<inner_product_gadget<FieldT>> compute_computed_flag;
 
    pb_variable<FieldT> pc_from_cf_or_zero;
 
    std::shared_ptr<loose_multiplexing_gadget<FieldT>>
        demux_packed_outgoing_desval;
 
public:
    pb_variable_array<FieldT> opcode_indicators;
    pb_variable_array<FieldT> instruction_results;
    pb_variable_array<FieldT> instruction_flags;
    pb_variable_array<FieldT> desidx;
    pb_variable<FieldT> packed_incoming_pc;
    pb_variable_array<FieldT> packed_incoming_registers;
    pb_variable<FieldT> packed_incoming_desval;
    pb_variable<FieldT> incoming_flag;
    pb_variable<FieldT> packed_outgoing_pc;
    pb_variable_array<FieldT> packed_outgoing_registers;
    pb_variable<FieldT> outgoing_flag;
    pb_variable<FieldT> packed_outgoing_desval;
 
    consistency_enforcer_gadget(
        tinyram_protoboard<FieldT> &pb,
        const pb_variable_array<FieldT> &opcode_indicators,
        const pb_variable_array<FieldT> &instruction_results,
        const pb_variable_array<FieldT> &instruction_flags,
        const pb_variable_array<FieldT> &desidx,
        const pb_variable<FieldT> &packed_incoming_pc,
        const pb_variable_array<FieldT> &packed_incoming_registers,
        const pb_variable<FieldT> &packed_incoming_desval,
        const pb_variable<FieldT> &incoming_flag,
        const pb_variable<FieldT> &packed_outgoing_pc,
        const pb_variable_array<FieldT> &packed_outgoing_registers,
        const pb_variable<FieldT> &outgoing_flag,
        const std::string &annotation_prefix = "");
 
    void generate_r1cs_constraints();
    void generate_r1cs_witness();
};
 
} // namespace libsnark
 
#include <libsnark/gadgetlib1/gadgets/cpu_checkers/tinyram/components/consistency_enforcer_gadget.tcc>
 
#endif // CONSISTENCY_ENFORCER_GADGET_HPP_