diff options
Diffstat (limited to 'src/cpu/inorder/resources/inst_buffer.cc')
| -rw-r--r-- | src/cpu/inorder/resources/inst_buffer.cc | 65 |
1 files changed, 40 insertions, 25 deletions
diff --git a/src/cpu/inorder/resources/inst_buffer.cc b/src/cpu/inorder/resources/inst_buffer.cc index 17b308db0..1db618b61 100644 --- a/src/cpu/inorder/resources/inst_buffer.cc +++ b/src/cpu/inorder/resources/inst_buffer.cc @@ -43,7 +43,8 @@ using namespace TheISA; using namespace ThePipeline; InstBuffer::InstBuffer(string res_name, int res_id, int res_width, - int res_latency, InOrderCPU *_cpu, ThePipeline::Params *params) + int res_latency, InOrderCPU *_cpu, + ThePipeline::Params *params) : Resource(res_name, res_id, res_width, res_latency, _cpu) { } @@ -77,37 +78,49 @@ InstBuffer::execute(int slot_idx) bool do_bypass = true; if (!instList.empty()) { - DPRINTF(InOrderInstBuffer, "[sn:%i] cannot bypass stage %i because buffer isn't empty.\n", + DPRINTF(InOrderInstBuffer, "[sn:%i] cannot bypass stage %i " + "because buffer isn't empty.\n", inst->seqNum, next_stage); do_bypass = false; } else if(cpu->pipelineStage[bypass_stage]->isBlocked(tid)) { - DPRINTF(InOrderInstBuffer, "[sn:%i] cannot bypass stage %i because stage %i is blocking.\n", + DPRINTF(InOrderInstBuffer, "[sn:%i] cannot bypass stage %i " + "because stage %i is blocking.\n", inst->seqNum, next_stage); do_bypass = false; - } else if(cpu->pipelineStage[bypass_stage]->stageBufferAvail() <= 0) { - DPRINTF(InOrderInstBuffer, "[sn:%i] cannot bypass stage %i because there is no room in " - "stage %i incoming stage buffer.\n", inst->seqNum, next_stage); + } else if(cpu->pipelineStage[bypass_stage]-> + stageBufferAvail() <= 0) { + DPRINTF(InOrderInstBuffer, "[sn:%i] cannot bypass stage %i " + "because there is no room in stage %i incoming stage " + "buffer.\n", inst->seqNum, next_stage); do_bypass = false; } if (!do_bypass) { // SCHEDULE USAGE OF BUFFER - DPRINTF(InOrderInstBuffer, "Scheduling [sn:%i] for buffer insertion in stage %i\n", + DPRINTF(InOrderInstBuffer, "Scheduling [sn:%i] for buffer " + "insertion in stage %i\n", inst->seqNum, next_stage); // Add to schedule: Insert into buffer in next stage - int stage_pri = ThePipeline::getNextPriority(inst, next_stage); + int stage_pri = ThePipeline::getNextPriority(inst, + next_stage); - inst->resSched.push(new ScheduleEntry(next_stage, stage_pri, id, - InstBuffer::InsertInst)); + inst->resSched.push(new ScheduleEntry(next_stage, + stage_pri, + id, + InstBuffer::InsertInst)); - // Add to schedule: Remove from buffer in next next (bypass) stage + // Add to schedule: Remove from buffer in next next (bypass) + // stage stage_pri = ThePipeline::getNextPriority(inst, bypass_stage); - inst->resSched.push(new ScheduleEntry(bypass_stage, stage_pri, id, - InstBuffer::RemoveInst)); + inst->resSched.push(new ScheduleEntry(bypass_stage, + stage_pri, + id, + InstBuffer::RemoveInst)); } else { // BYPASS BUFFER & NEXT STAGE - DPRINTF(InOrderInstBuffer, "Setting [sn:%i] to bypass stage %i and enter stage %i.\n", - inst->seqNum, next_stage, bypass_stage); + DPRINTF(InOrderInstBuffer, "Setting [sn:%i] to bypass stage " + "%i and enter stage %i.\n", inst->seqNum, next_stage, + bypass_stage); inst->setNextStage(bypass_stage); instsBypassed++; } @@ -121,20 +134,21 @@ InstBuffer::execute(int slot_idx) bool inserted = false; if (instList.size() < width) { - DPRINTF(InOrderInstBuffer, "[tid:%i]: Inserting [sn:%i] into buffer.\n", - tid, inst->seqNum); + DPRINTF(InOrderInstBuffer, "[tid:%i]: Inserting [sn:%i] into " + "buffer.\n", tid, inst->seqNum); insert(inst); inserted = true; } else { - DPRINTF(InOrderInstBuffer, "[tid:%i]: Denying [sn:%i] request because " - "buffer is full.\n", tid, inst->seqNum); + DPRINTF(InOrderInstBuffer, "[tid:%i]: Denying [sn:%i] request " + "because buffer is full.\n", tid, inst->seqNum); std::list<DynInstPtr>::iterator list_it = instList.begin(); std::list<DynInstPtr>::iterator list_end = instList.end(); while (list_it != list_end) { - DPRINTF(Resource,"Serving [tid:%i] [sn:%i].\n", (*list_it)->readTid(), (*list_it)->seqNum); + DPRINTF(Resource,"Serving [tid:%i] [sn:%i].\n", + (*list_it)->readTid(), (*list_it)->seqNum); list_it++; } } @@ -145,8 +159,8 @@ InstBuffer::execute(int slot_idx) case RemoveInst: { - DPRINTF(InOrderInstBuffer, "[tid:%i]: Removing [sn:%i] from buffer.\n", - tid, inst->seqNum); + DPRINTF(InOrderInstBuffer, "[tid:%i]: Removing [sn:%i] from " + "buffer.\n", tid, inst->seqNum); remove(inst); ib_req->done(); } @@ -156,7 +170,8 @@ InstBuffer::execute(int slot_idx) fatal("Unrecognized command to %s", resName); } - DPRINTF(InOrderInstBuffer, "Buffer now contains %i insts.\n", instList.size()); + DPRINTF(InOrderInstBuffer, "Buffer now contains %i insts.\n", + instList.size()); } void @@ -213,8 +228,8 @@ InstBuffer::squash(DynInstPtr inst, int stage_num, // Removed Instructions from InstList & Clear Remove List while (!remove_list.empty()) { - DPRINTF(InOrderInstBuffer, "[tid:%i]: Removing squashed [sn:%i] from buffer.\n", - tid, (*remove_list.front())->seqNum); + DPRINTF(InOrderInstBuffer, "[tid:%i]: Removing squashed [sn:%i] from " + "buffer.\n", tid, (*remove_list.front())->seqNum); instList.erase(remove_list.front()); remove_list.pop(); } |