#ifndef AIN48__H
#define AIN48__H

#include <assert.h>
#include <common.h>

enum instruction_format {
    AMAL,
    IML,
    IPL,
    AMLS,
    ASSS,
    ASLI,
    ASLR,
    ASRD,
};

enum amal_ac : u8 {
    ADD = 000,
    STR = 001,
    MPL = 002,
    DVD = 004,
    RSD = 005,
    DEM = 006,
    ET = 010,
    VEL = 011,
    AUT = 012,
    NAM = 014,
    NEC = 015,
};

enum asss_ac : u8 {
    RV = 00,
    IRRV = 04,
    NCIVC = 03,
    NCRV = 02,
};

// clang-format off
struct instruction {
    enum instruction_format format;
    union {
        struct {
            bool s, i1, i2; enum amal_ac ac; u4 rf;
            union {
                u8 imm; i8 simm;
                struct {
                    union { u4 r2; u4 imm2; i4 simm2; };
                    union { u4 r1; u4 imm1; u4 simm1; };
                };
            } data;
        } AMAL;
        struct { u4 r; u48 imm; } IML;
        struct { bool s; u4 r; union { u12 imm; i12 simm; }; } IPL;
        struct { bool s; u4 rd; u4 rl; i12 imm; } AMLS;
        enum asss_ac ASSS_ac;
        struct { bool I, E, N, U, R; u48 imm; } ASLI;
        struct { bool I, E, N, U, R; u4 rl; } ASLR;
        struct { bool I, E, N, U, R; u4 rl; i12 imm; } ASRD;
    };
};
// clang-format on

u12 *ain48_read_instr(u12 *code, struct instruction *i);
u12 *ain48_write_instr(u12 *code, struct instruction *i);

#endif // AIN48__H