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| author | Korey Sewell <ksewell@umich.edu> | 2010-06-23 18:15:23 -0400 |
|---|---|---|
| committer | Korey Sewell <ksewell@umich.edu> | 2010-06-23 18:15:23 -0400 |
| commit | 39ac4dce04ccf2d83a29fcd7fc698f607bf720d4 (patch) | |
| tree | dfff805e6c3de9db90c918bd39bd02a3c4d4535d | |
| parent | 7695d4c63fb702ae9d53285f8e544c6c7c13fa74 (diff) | |
| download | gem5-39ac4dce04ccf2d83a29fcd7fc698f607bf720d4.tar.xz | |
inorder: stall signal handling
remove stall only when necessary
add debugging printfs
| -rw-r--r-- | src/cpu/inorder/pipeline_stage.cc | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/src/cpu/inorder/pipeline_stage.cc b/src/cpu/inorder/pipeline_stage.cc index dcf4d81bf..deed695eb 100644 --- a/src/cpu/inorder/pipeline_stage.cc +++ b/src/cpu/inorder/pipeline_stage.cc @@ -233,8 +233,21 @@ PipelineStage::checkStall(ThreadID tid) const void PipelineStage::removeStalls(ThreadID tid) { - for (int stNum = 0; stNum < NumStages; stNum++) { - stalls[tid].stage[stNum] = false; + for (int st_num = 0; st_num < NumStages; st_num++) { + if (stalls[tid].stage[st_num] == true) { + DPRINTF(InOrderStage, "Removing stall from stage %i.\n", st_num); + stalls[tid].stage[st_num] = false; + } + + if (toPrevStages->stageBlock[st_num][tid] == true) { + DPRINTF(InOrderStage, "Removing pending block from stage %i.\n", st_num); + toPrevStages->stageBlock[st_num][tid] = false; + } + + if (fromNextStages->stageBlock[st_num][tid] == true) { + DPRINTF(InOrderStage, "Removing pending block from stage %i.\n", st_num); + fromNextStages->stageBlock[st_num][tid] = false; + } } stalls[tid].resources.clear(); } @@ -626,12 +639,15 @@ PipelineStage::readStallSignals(ThreadID tid) // Check for Stage Blocking Signal if (fromNextStages->stageBlock[stage_idx][tid]) { + DPRINTF(InOrderStage, "[tid:%i] Stall from stage %i set.\n", tid, + stage_idx); stalls[tid].stage[stage_idx] = true; } // Check for Stage Unblocking Signal if (fromNextStages->stageUnblock[stage_idx][tid]) { - //assert(fromNextStages->stageBlock[stage_idx][tid]); + DPRINTF(InOrderStage, "[tid:%i] Stall from stage %i unset.\n", tid, + stage_idx); stalls[tid].stage[stage_idx] = false; } } |