| Line 187... |
Line 187... |
return tlbEntryLo;
|
return tlbEntryLo;
|
}
|
}
|
|
|
|
|
void mmuSetEntryLo(Word value) {
|
void mmuSetEntryLo(Word value) {
|
tlbEntryLo = value & (PAGE_MASK | TLB_WRITE | TLB_VALID);
|
tlbEntryLo = value & (FRAME_MASK | TLB_WRITE | TLB_VALID);
|
}
|
}
|
|
|
|
|
Word mmuGetBadAddr(void) {
|
Word mmuGetBadAddr(void) {
|
return mmuBadAddr;
|
return mmuBadAddr;
|
| Line 229... |
Line 229... |
int index;
|
int index;
|
|
|
/* choose a random index, but don't touch fixed entries */
|
/* choose a random index, but don't touch fixed entries */
|
index = randomIndex;
|
index = randomIndex;
|
tlb[index].page = tlbEntryHi & PAGE_MASK;
|
tlb[index].page = tlbEntryHi & PAGE_MASK;
|
tlb[index].frame = tlbEntryLo & PAGE_MASK;
|
tlb[index].frame = tlbEntryLo & FRAME_MASK;
|
tlb[index].write = tlbEntryLo & TLB_WRITE ? true : false;
|
tlb[index].write = tlbEntryLo & TLB_WRITE ? true : false;
|
tlb[index].valid = tlbEntryLo & TLB_VALID ? true : false;
|
tlb[index].valid = tlbEntryLo & TLB_VALID ? true : false;
|
if (debugWrite) {
|
if (debugWrite) {
|
cPrintf("**** TLB[%02d] <- 0x%08X 0x%08X %c %c ****\n",
|
cPrintf("**** TLB[%02d] <- 0x%08X 0x%08X %c %c ****\n",
|
index, tlb[index].page, tlb[index].frame,
|
index, tlb[index].page, tlb[index].frame,
|
| Line 261... |
Line 261... |
void mmuTbwi(void) {
|
void mmuTbwi(void) {
|
int index;
|
int index;
|
|
|
index = tlbIndex & TLB_MASK;
|
index = tlbIndex & TLB_MASK;
|
tlb[index].page = tlbEntryHi & PAGE_MASK;
|
tlb[index].page = tlbEntryHi & PAGE_MASK;
|
tlb[index].frame = tlbEntryLo & PAGE_MASK;
|
tlb[index].frame = tlbEntryLo & FRAME_MASK;
|
tlb[index].write = tlbEntryLo & TLB_WRITE ? true : false;
|
tlb[index].write = tlbEntryLo & TLB_WRITE ? true : false;
|
tlb[index].valid = tlbEntryLo & TLB_VALID ? true : false;
|
tlb[index].valid = tlbEntryLo & TLB_VALID ? true : false;
|
if (debugWrite) {
|
if (debugWrite) {
|
cPrintf("**** TLB[%02d] <- 0x%08X 0x%08X %c %c ****\n",
|
cPrintf("**** TLB[%02d] <- 0x%08X 0x%08X %c %c ****\n",
|
index, tlb[index].page, tlb[index].frame,
|
index, tlb[index].page, tlb[index].frame,
|
| Line 296... |
Line 296... |
int i;
|
int i;
|
|
|
cPrintf("Resetting MMU...\n");
|
cPrintf("Resetting MMU...\n");
|
for (i = 0; i < TLB_SIZE; i++) {
|
for (i = 0; i < TLB_SIZE; i++) {
|
tlb[i].page = rand() & PAGE_MASK;
|
tlb[i].page = rand() & PAGE_MASK;
|
tlb[i].frame = rand() & PAGE_MASK;
|
tlb[i].frame = rand() & FRAME_MASK;
|
tlb[i].write = rand() & 0x1000 ? true : false;
|
tlb[i].write = rand() & 0x1000 ? true : false;
|
tlb[i].valid = rand() & 0x1000 ? true : false;
|
tlb[i].valid = rand() & 0x1000 ? true : false;
|
if (debugWrite) {
|
if (debugWrite) {
|
cPrintf("**** TLB[%02d] <- 0x%08X 0x%08X %c %c ****\n",
|
cPrintf("**** TLB[%02d] <- 0x%08X 0x%08X %c %c ****\n",
|
i, tlb[i].page, tlb[i].frame,
|
i, tlb[i].page, tlb[i].frame,
|
| Line 308... |
Line 308... |
tlb[i].valid ? 'v' : '-');
|
tlb[i].valid ? 'v' : '-');
|
}
|
}
|
}
|
}
|
tlbIndex = rand() & TLB_MASK;
|
tlbIndex = rand() & TLB_MASK;
|
tlbEntryHi = rand() & PAGE_MASK;
|
tlbEntryHi = rand() & PAGE_MASK;
|
tlbEntryLo = rand() & (PAGE_MASK | TLB_WRITE | TLB_VALID);
|
tlbEntryLo = rand() & (FRAME_MASK | TLB_WRITE | TLB_VALID);
|
mmuBadAddr = rand();
|
mmuBadAddr = rand();
|
mmuBadAccs = rand() & MMU_ACCS_MASK;
|
mmuBadAccs = rand() & MMU_ACCS_MASK;
|
randomIndex = TLB_MASK;
|
randomIndex = TLB_MASK;
|
}
|
}
|
|
|
