diff options
Diffstat (limited to 'inc/ex.h')
| -rw-r--r-- | inc/ex.h | 76 |
1 files changed, 53 insertions, 23 deletions
@@ -23,36 +23,28 @@ #include <exception> #include <unordered_map> -#define ADDITION_OF_GUARD(a, b) \ - (b >= 0) && (a > MAX_INT - b) +#define ADDITION_OF_GUARD(a, b) (b >= 0) && (a > MAX_INT - b) -#define ADDITION_UF_GUARD(a, b) \ - (b < 0) && (a < (-(MAX_INT)-1) - b) +#define ADDITION_UF_GUARD(a, b) (b < 0) && (a < (-(MAX_INT)-1) - b) -#define SUBTRACTION_OF_GUARD(a, b) \ - (b < 0) && (a > MAX_INT + b) +#define SUBTRACTION_OF_GUARD(a, b) (b < 0) && (a > MAX_INT + b) -#define SUBTRACTION_UF_GUARD(a, b) \ - (b >= 0) && (a < (-(MAX_INT)-1) + b) +#define SUBTRACTION_UF_GUARD(a, b) (b >= 0) && (a < (-(MAX_INT)-1) + b) -#define MULTIPLICATION_OF_GUARD(a, b) \ - (b != 0) && \ - (((b > 0) && (a > 0) && (a > MAX_INT / b)) || \ - ((b < 0) && (a < 0) && (a < MAX_INT / b))) +#define MULTIPLICATION_OF_GUARD(a, b) \ + (b != 0) && (((b > 0) && (a > 0) && (a > MAX_INT / b)) || \ + ((b < 0) && (a < 0) && (a < MAX_INT / b))) -#define MULTIPLICATION_UF_GUARD(a, b) \ - (b != 0) && (b != -1) && \ - (((b > 0) && (a < 0) && (a < (-(MAX_INT)-1) / b)) || \ - ((b < 0) && (a > 0) && (a > (-(MAX_INT)-1) / b))) +#define MULTIPLICATION_UF_GUARD(a, b) \ + (b != 0) && (b != -1) && \ + (((b > 0) && (a < 0) && (a < (-(MAX_INT)-1) / b)) || \ + ((b < 0) && (a > 0) && (a > (-(MAX_INT)-1) / b))) -#define DIVISION_OF_GUARD(a, b) \ - ((a == -(MAX_INT) - 1) && (b == -1)) || (b == 0) +#define DIVISION_OF_GUARD(a, b) ((a == -(MAX_INT)-1) && (b == -1)) || (b == 0) class HaltException : public std::exception { - const char *what() const noexcept override { - return ""; - } + const char *what() const noexcept override { return ""; } }; class EX : public Stage @@ -63,19 +55,57 @@ class EX : public Stage * @param The next stage in the pipeline. * @return A newly allocated EX object. */ - using Stage::Stage; using Stage::advance; + using Stage::Stage; private: void advance_helper(); /** + * Handles operations involving three ints. + * @param slot 1, and later, the result of the mnemonic operation. + * @param slot 2 + * @param slot 3 + * @param the mnemonic + * @param the program counter + */ + void handle_int_operations( + signed int &s1, + signed int s2, + signed int s3, + Mnemonic m, + unsigned int pc); + /** + * Handles operations involving three vector registers. + * @param slot 1, and later, the result of the mnemonic operation. + * @param slot 2 + * @param slot 3 + * @param the mnemonic + * @param the vector length register + */ + void handle_vector_operations( + std::array<signed int, V_R_LIMIT> &s1, + std::array<signed int, V_R_LIMIT> s2, + Mnemonic m, + unsigned int v_len); + + /** + * Handles operations involving a single vector register. + * Currently, this is LOADV and STOREV + * @param slot 1, and later, the result of the mnemonic operation. + * @param slot 2 + * @param the mnemonic + * @param the vector length register + */ + void handle_i_vector_operations(signed int &s1, signed int s2, Mnemonic m); + /** * Wrapper for division functions, which detects HALT instructinos (division * by 0). * @param the numerator * @param the denominator * @param if the modulo operator should instead be used + * @return if the operation overflowed */ - void handle_divide(signed int &s1, signed int s2, bool is_mod); + bool handle_divide(signed int &s1, signed int s2, bool is_mod); }; #endif /* EX_H_INCLUDED */ |