rsd

#include <stdint.h>
#include "../lib.c"

#define WAY_NUM              8
#define DCACHE_LINE_BYTE_NUM 8
#define DCACHE_INDEX_NUM     (512 / WAY_NUM)
#define ALIGNED_SIZE         (DCACHE_LINE_BYTE_NUM * DCACHE_INDEX_NUM)
#define TOTAL_SIZE           (ALIGNED_SIZE * WAY_NUM)
#define TEST_SIZE            (DCACHE_LINE_BYTE_NUM * 2)

volatile uint8_t array[TOTAL_SIZE * 2] __attribute__ ((aligned (ALIGNED_SIZE)));

uint32_t test() {

    // write
    for (int i = 0; i < TEST_SIZE; i += DCACHE_LINE_BYTE_NUM) {
        for (int way = 0; way < WAY_NUM; ++way) {
            array[way * ALIGNED_SIZE + i] = way + 1;
        }
    }

    uint32_t sum = 0;

    // read
    for (int i = 0; i < TEST_SIZE; i += DCACHE_LINE_BYTE_NUM) {
        for (int way = 0; way < WAY_NUM; ++way) {
            sum += array[way * ALIGNED_SIZE + i];
        }
    }

    #define LOOP_NUM 1000
    uint32_t sum2 = 0;
    array[TOTAL_SIZE*0] = 1;
    array[TOTAL_SIZE*1] = 1;
    for(int i = 0; i < LOOP_NUM; i++){
        sum2 += array[TOTAL_SIZE*0];
        sum2 += array[TOTAL_SIZE*1];
    }

    return sum;
}

int main(void) {
    uint32_t ret = test();
    // ((1 + 2 + ... + WAY_NUM) * ARRAY_SIZE / DCACHE_LINE_BYTE_NUM)
    asm volatile ("addi x11, %0, 0" : : "r" (ret));
    return 0;
}