diff options
Diffstat (limited to 'inc/definitions.h')
| -rw-r--r-- | inc/definitions.h | 61 |
1 files changed, 23 insertions, 38 deletions
diff --git a/inc/definitions.h b/inc/definitions.h index 6fa29ee..94414a4 100644 --- a/inc/definitions.h +++ b/inc/definitions.h @@ -31,8 +31,7 @@ * The total number of lines in l1 cache */ #define L1_CACHE_WORD_SPEC 7 -#define L1_CACHE_LINE_SPEC \ - static_cast<unsigned int>(L1_CACHE_WORD_SPEC - LINE_SPEC) +#define L1_CACHE_LINE_SPEC static_cast<unsigned int>(L1_CACHE_WORD_SPEC - LINE_SPEC) #define L1_CACHE_LINES static_cast<int>(pow(2, L1_CACHE_LINE_SPEC)) /** @@ -46,42 +45,6 @@ #define L1_CACHE_DELAY 0 /** - * The number of general purpose registers - */ -#define GPR_NUM 16 - -/** - * The number of vector registers - */ -#define V_NUM 8 - -/** - * The number of bits to specify an instruction type - */ -#define TYPE_SIZE 2 - -/** - * The number of bits to specify a register - */ -#define REG_SIZE 5 - -/** - * The number of bits to specify an R-Type opcode. - */ -#define R_OPCODE_SIZE 5 - -/** - * The number of bits to specify an opcode. - */ -#define OPCODE_SIZE 4 - -/** - * The maximum value an integer can hold. - * The minimum is always this number plus one negated. - */ -#define MAX_INT 2147483647 - -/** * Return the N least-significant bits from integer K using a bit mask * @param the integer to be parsed * @param the number of bits to be parsed @@ -98,4 +61,26 @@ */ #define GET_MID_BITS(k, m, n) GET_LS_BITS((k) >> (m), ((n) - (m))) +/** + * Parse an address into a tag, index into the cache table, and a line + * offset. + * @param the address to be parsed + * @param the resulting tag + * @param the resulting index + * @param the resulting offset + */ +// clang-format off +#define GET_FIELDS(a, t, i, o) \ + *(t) = GET_MID_BITS(a, L1_CACHE_LINE_SPEC + LINE_SPEC, MEM_WORD_SPEC); \ + *(i) = GET_MID_BITS(a, LINE_SPEC, L1_CACHE_LINE_SPEC + LINE_SPEC); \ + *(o) = GET_LS_BITS(a, LINE_SPEC); \ + +/** + * Ensures address is within the current memory size using a clean wrap. + * @param an address + */ +#define WRAP_ADDRESS(a) \ + ((a < 0) ? ((a % MEM_WORDS) + MEM_WORDS) % MEM_WORDS : a % MEM_WORDS) \ +// clang-format on + #endif /* DEFINITIONS_H_INCLUDED */ |