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authorKorey Sewell <ksewell@umich.edu>2011-02-12 10:14:45 -0500
committerKorey Sewell <ksewell@umich.edu>2011-02-12 10:14:45 -0500
commite26aee514d328bd8c9930c742df6ce1485dce5ae (patch)
treed64c361532c00a47d30ddcb58b3205406b1adfe4 /src/cpu/inorder/resources/cache_unit.cc
parent516b61146271b13d2350563b0349747724ffbc99 (diff)
downloadgem5-e26aee514d328bd8c9930c742df6ce1485dce5ae.tar.xz
inorder: utilize cached skeds in pipeline
allow the pipeline and resources to use the cached instruction schedule and resource sked iterator
Diffstat (limited to 'src/cpu/inorder/resources/cache_unit.cc')
-rw-r--r--src/cpu/inorder/resources/cache_unit.cc20
1 files changed, 12 insertions, 8 deletions
diff --git a/src/cpu/inorder/resources/cache_unit.cc b/src/cpu/inorder/resources/cache_unit.cc
index 8b4dd4402..e2e1c177a 100644
--- a/src/cpu/inorder/resources/cache_unit.cc
+++ b/src/cpu/inorder/resources/cache_unit.cc
@@ -260,7 +260,7 @@ CacheUnit::findRequest(DynInstPtr inst)
if (cache_req &&
cache_req->getInst() == inst &&
- cache_req->instIdx == inst->resSched.top()->idx) {
+ cache_req->instIdx == inst->curSkedEntry->idx) {
return cache_req;
}
map_it++;
@@ -296,7 +296,7 @@ ResReqPtr
CacheUnit::getRequest(DynInstPtr inst, int stage_num, int res_idx,
int slot_num, unsigned cmd)
{
- ScheduleEntry* sched_entry = inst->resSched.top();
+ ScheduleEntry* sched_entry = *inst->curSkedEntry;
if (!inst->validMemAddr()) {
panic("Mem. Addr. must be set before requesting cache access\n");
@@ -346,7 +346,7 @@ CacheUnit::getRequest(DynInstPtr inst, int stage_num, int res_idx,
return new CacheRequest(this, inst, stage_num, id, slot_num,
sched_entry->cmd, 0, pkt_cmd,
0/*flags*/, this->cpu->readCpuId(),
- inst->resSched.top()->idx);
+ inst->curSkedEntry->idx);
}
void
@@ -357,17 +357,17 @@ CacheUnit::requestAgain(DynInstPtr inst, bool &service_request)
// Check to see if this instruction is requesting the same command
// or a different one
- if (cache_req->cmd != inst->resSched.top()->cmd &&
- cache_req->instIdx == inst->resSched.top()->idx) {
+ if (cache_req->cmd != inst->curSkedEntry->cmd &&
+ cache_req->instIdx == inst->curSkedEntry->idx) {
// If different, then update command in the request
- cache_req->cmd = inst->resSched.top()->cmd;
+ cache_req->cmd = inst->curSkedEntry->cmd;
DPRINTF(InOrderCachePort,
"[tid:%i]: [sn:%i]: Updating the command for this "
"instruction\n ", inst->readTid(), inst->seqNum);
service_request = true;
- } else if (inst->resSched.top()->idx != CacheUnit::InitSecondSplitRead &&
- inst->resSched.top()->idx != CacheUnit::InitSecondSplitWrite) {
+ } else if (inst->curSkedEntry->idx != CacheUnit::InitSecondSplitRead &&
+ inst->curSkedEntry->idx != CacheUnit::InitSecondSplitWrite) {
// If same command, just check to see if memory access was completed
// but dont try to re-execute
DPRINTF(InOrderCachePort,
@@ -487,6 +487,8 @@ CacheUnit::read(DynInstPtr inst, Addr addr,
inst->splitMemData = new uint8_t[size];
if (!inst->splitInstSked) {
+ assert(0 && "Split Requests Not Supported for Now...");
+
// Schedule Split Read/Complete for Instruction
// ==============================
int stage_num = cache_req->getStageNum();
@@ -590,6 +592,8 @@ CacheUnit::write(DynInstPtr inst, uint8_t *data, unsigned size,
inst->splitInst = true;
if (!inst->splitInstSked) {
+ assert(0 && "Split Requests Not Supported for Now...");
+
// Schedule Split Read/Complete for Instruction
// ==============================
int stage_num = cache_req->getStageNum();