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| author | Korey Sewell <ksewell@umich.edu> | 2011-06-19 21:43:40 -0400 |
|---|---|---|
| committer | Korey Sewell <ksewell@umich.edu> | 2011-06-19 21:43:40 -0400 |
| commit | 561c33f0824a705cb360ecb4ae3bf8cfd490f007 (patch) | |
| tree | 7fb92ebc9a8f09ceacb8ad8e60e60990a9939621 /src/cpu/inorder/resources/mult_div_unit.cc | |
| parent | c4deabfb97928f81acb0d66338426cb5f2687c37 (diff) | |
| download | gem5-561c33f0824a705cb360ecb4ae3bf8cfd490f007.tar.xz | |
inorder: dont handle multiple faults on same cycle
if a faulting instruction reaches an execution unit,
then ignore it and pass it through the pipeline.
Once we recognize the fault in the graduation unit,
dont allow a second fault to creep in on the same cycle.
Diffstat (limited to 'src/cpu/inorder/resources/mult_div_unit.cc')
| -rw-r--r-- | src/cpu/inorder/resources/mult_div_unit.cc | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/cpu/inorder/resources/mult_div_unit.cc b/src/cpu/inorder/resources/mult_div_unit.cc index fc27276d5..0ff05252c 100644 --- a/src/cpu/inorder/resources/mult_div_unit.cc +++ b/src/cpu/inorder/resources/mult_div_unit.cc @@ -192,7 +192,15 @@ MultDivUnit::execute(int slot_num) { ResourceRequest* mult_div_req = reqs[slot_num]; DynInstPtr inst = reqs[slot_num]->inst; - + if (inst->fault != NoFault) { + DPRINTF(InOrderMDU, + "[tid:%i]: [sn:%i]: Detected %s fault @ %x. Forwarding to " + "next stage.\n", inst->readTid(), inst->seqNum, inst->fault->name(), + inst->pcState()); + mult_div_req->done(); + return; + } + DPRINTF(InOrderMDU, "Executing [sn:%i] ...\n", slot_num); switch (mult_div_req->cmd) |