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task1 done

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Rushil Umaretiya 2024-04-10 20:30:50 -04:00
parent 25e9b0edf8
commit 69c47204ae
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GPG Key ID: 4E8FAF9C926AF959
1 changed files with 20 additions and 11 deletions
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cache.c
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@ -50,15 +50,6 @@ int cread(unsigned int cmf, unsigned int* hex_addr, bool* hit, bool* replace) {
// hex_addr // hex_addr
unsigned int line, tag, block_offset; unsigned int line, tag, block_offset;
if (cmf == DM) {
line = bit_select(*hex_addr, addr_bits - NUM_LINE_BITS, addr_bits - 1);
} else {
line = 0;
}
tag = bit_select(*hex_addr, 0, addr_bits - NUM_LINE_BITS - 1);
block_offset = bit_select(*hex_addr, 0, NUM_BLOCK_OFFSET_BITS - 1);
// (Optional) Indicates a line that is open and thus usable // (Optional) Indicates a line that is open and thus usable
int open_line; int open_line;
// (Optional) For DM, indicates the cache line that should be replaced // (Optional) For DM, indicates the cache line that should be replaced
@ -76,6 +67,10 @@ int cread(unsigned int cmf, unsigned int* hex_addr, bool* hit, bool* replace) {
*replace = false; *replace = false;
if ((cmf == DM) && ((*hex_addr) < exp2(addr_bits))) { if ((cmf == DM) && ((*hex_addr) < exp2(addr_bits))) {
tag = bit_select(*hex_addr, addr_bits - 1, addr_bits - NUM_TAG_BITS_DM);
line = bit_select(*hex_addr, addr_bits - NUM_TAG_BITS_DM - 1, NUM_BLOCK_OFFSET_BITS);
block_offset = bit_select(*hex_addr, NUM_BLOCK_OFFSET_BITS - 1, 0);
if (cache[line]->tag == tag) { if (cache[line]->tag == tag) {
// hit // hit
*hit = true; *hit = true;
@ -86,8 +81,11 @@ int cread(unsigned int cmf, unsigned int* hex_addr, bool* hit, bool* replace) {
*replace = true; *replace = true;
cache[line]->tag = tag; cache[line]->tag = tag;
cache[line]->hit_count = 1; cache[line]->hit_count = 1;
cache[line]->block[block_offset] =
phy_memory[block_location[*hex_addr]]; unsigned int mem_index = block_location[*hex_addr >> NUM_BLOCK_OFFSET_BITS];
memcpy(cache[line]->block, phy_memory + mem_index, sizeof(unsigned int) * (int)exp2(NUM_BLOCK_OFFSET_BITS));
ret_val = cache[line]->block[block_offset]; ret_val = cache[line]->block[block_offset];
} }
@ -101,6 +99,17 @@ int cread(unsigned int cmf, unsigned int* hex_addr, bool* hit, bool* replace) {
return ret_val; return ret_val;
} }
void print_binary(unsigned char num) {
// Start from the most significant bit (MSB) and move to the least significant bit (LSB)
for (int i = 7; i >= 0; i--) {
// Use bitwise AND to isolate the specific bit and shift right to get 1 or 0
int bit = (num >> i) & 1;
printf("%d", bit);
}
printf("\n"); // Newline after printing the binary number
}
void cprint() { void cprint() {
unsigned int line; unsigned int line;