decoder_test.cpp

#include <array>
#include <fstream>
#include <iss/instruction_decoder.h>
#include <vector>

enum class opcode_e {
    C__LBU = 116,
    C__LHU = 117,
    C__LH = 118,
    C__SB = 119,
    C__SH = 120,

};
struct instruction_descriptor {
    uint32_t length;
    uint32_t value;
    uint32_t mask;
    opcode_e op;
};

const std::array<instruction_descriptor, 2> instr_descr = {{//{16, 0b1000000000000000, 0b1111110000000011, opcode_e::C__LBU},
                                                            {16, 0b1000010000000000, 0b1111110001000011, opcode_e::C__LHU},
                                                            {16, 0b1000010001000000, 0b1111110001000011, opcode_e::C__LH}}};

int main(int argc, char* argv[]) {
    iss::decoder instr_decoder([]() {
        std::vector<iss::generic_instruction_descriptor> g_instr_descr;
        g_instr_descr.reserve(instr_descr.size());
        for(uint32_t i = 0; i < instr_descr.size(); ++i) {
            iss::generic_instruction_descriptor new_instr_descr{instr_descr[i].value, instr_descr[i].mask, i};
            g_instr_descr.push_back(new_instr_descr);
        }
        return std::move(g_instr_descr);
    }());

    std::ofstream json_out{"idecode_tree.json"};
    json_out << instr_decoder.print_tree_as_json();

    auto inst_index1 = instr_decoder.decode_instr(0x8440);
    auto inst_index2 = instr_decoder.decode_instr(0x86b0);

    return inst_index1 == inst_index2 ? 0 : 1;
}