AlphaISA::PTE *
AlphaTLB::lookup(Addr vpn, uint8_t asn) const
{
- DPRINTF(TLB, "lookup %#x, asn %#x\n", vpn, (int)asn);
+ // assume not found...
+ AlphaISA::PTE *retval = NULL;
PageTable::const_iterator i = lookupTable.find(vpn);
- if (i == lookupTable.end())
- return NULL;
-
- while (i->first == vpn) {
- int index = i->second;
- AlphaISA::PTE *pte = &table[index];
- assert(pte->valid);
- if (vpn == pte->tag && (pte->asma || pte->asn == asn))
- return pte;
+ if (i != lookupTable.end()) {
+ while (i->first == vpn) {
+ int index = i->second;
+ AlphaISA::PTE *pte = &table[index];
+ assert(pte->valid);
+ if (vpn == pte->tag && (pte->asma || pte->asn == asn)) {
+ retval = pte;
+ break;
+ }
- ++i;
+ ++i;
+ }
}
- // not found...
- return NULL;
+ DPRINTF(TLB, "lookup %#x, asn %#x -> %s ppn %#x\n", vpn, (int)asn,
+ retval ? "hit" : "miss", retval ? retval->ppn : 0);
+ return retval;
}
static StaticInstPtr<AlphaISA> decodeInst(MachInst);
+ // return a no-op instruction... used for instruction fetch faults
+ static const MachInst NoopMachInst;
+
enum annotes {
ANNOTE_NONE = 0,
// An impossible number for instruction annotations
ExecutionTraceParamContext exeTraceParams("exetrace");
Param<bool> exe_trace_spec(&exeTraceParams, "speculative",
- "capture speculative instructions", false);
+ "capture speculative instructions", true);
Param<bool> exe_trace_print_cycle(&exeTraceParams, "print_cycle",
"print cycle number", true);