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Diffstat (limited to 'src/cpu/inorder/resources/graduation_unit.cc')
| -rw-r--r-- | src/cpu/inorder/resources/graduation_unit.cc | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/src/cpu/inorder/resources/graduation_unit.cc b/src/cpu/inorder/resources/graduation_unit.cc deleted file mode 100644 index ea63527b6..000000000 --- a/src/cpu/inorder/resources/graduation_unit.cc +++ /dev/null @@ -1,135 +0,0 @@ -/* - * Copyright (c) 2007 MIPS Technologies, Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer; - * redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution; - * neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * Authors: Korey Sewell - * - */ - -#include "cpu/inorder/resources/graduation_unit.hh" -#include "debug/InOrderGraduation.hh" - -using namespace ThePipeline; - -GraduationUnit::GraduationUnit(std::string res_name, int res_id, int res_width, - Cycles res_latency, InOrderCPU *_cpu, - ThePipeline::Params *params) - : Resource(res_name, res_id, res_width, res_latency, _cpu) -{ - for (ThreadID tid = 0; tid < ThePipeline::MaxThreads; tid++) { - nonSpecInstActive[tid] = &cpu->nonSpecInstActive[tid]; - nonSpecSeqNum[tid] = &cpu->nonSpecSeqNum[tid]; - lastNonSpecTick[tid] = 0; - lastFaultTick[tid] = 0; - } -} - -void -GraduationUnit::execute(int slot_num) -{ - ResourceRequest* grad_req = reqs[slot_num]; - DynInstPtr inst = reqs[slot_num]->inst; - ThreadID tid = inst->readTid(); - int stage_num = inst->curSkedEntry->stageNum; - Tick cur_tick = curTick(); - - //@todo: not the common case, anyway we can move this - // check to the stage and just ignore instructions - // after? - if (lastNonSpecTick[tid] == cur_tick) { - DPRINTF(InOrderGraduation, "Unable to graduate [sn:%i]. " - "Only 1 nonspec inst. per cycle can graduate.\n"); - grad_req->done(false); - return; - } - - //@todo: use trap Pending - if (cpu->trapPending[tid]) { - //if (lastFaultTick[tid] == cur_tick) { - DPRINTF(InOrderGraduation, "Unable to graduate [sn:%i]. " - "Only 1 fault can be handled per tick.\n"); - grad_req->done(false); - return; - } - - - switch (grad_req->cmd) - { - case CheckFault: - { - // Handle Any Faults Before Graduating Instruction - if (inst->fault != NoFault) { - DPRINTF(InOrderGraduation, "[tid:%i]: [sn:%i]: fault %s found for %s\n", - tid, inst->seqNum, inst->fault->name(), - inst->instName()); - squashThenTrap(stage_num, inst); - lastFaultTick[tid] = cur_tick; - grad_req->done(false); - return; - } - - DPRINTF(InOrderGraduation, "[tid:%i] [sn:%i]: No fault found for %s\n", - tid, inst->seqNum, inst->instName()); - grad_req->done(); - } - break; - - case GraduateInst: - { - DPRINTF(InOrderGraduation, - "[tid:%i]:[sn:%i]: Graduating instruction %s.\n", - tid, inst->seqNum, inst->staticInst->disassemble(inst->instAddr())); - - // Release Non-Speculative "Block" on instructions that could not - // execute because there was a non-speculative inst. active. - // @TODO: Fix this functionality. Probably too conservative. - // Maybe it should be, non-spec. insts should block other - // non-spec insts because they can potentially be reading - // system state that will be changed by the 1st non-spec inst. - if (inst->isNonSpeculative()) { - *nonSpecInstActive[tid] = false; - DPRINTF(InOrderGraduation, - "[tid:%i] Non-speculative inst [sn:%i] graduated\n", - tid, inst->seqNum); - lastNonSpecTick[tid] = cur_tick; - } - - if (inst->traceData) { - inst->traceData->setStageCycle(stage_num, cur_tick); - } - - // Tell CPU that instruction is finished processing - cpu->instDone(inst, tid); - - grad_req->done(); - } - break; - - default: - fatal("Unrecognized command to %s", resName); - } - -} |