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https://github.com/YosysHQ/yosys
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Add support for various ff/latch cells simulation
This commit is contained in:
Miodrag Milanovic
parent
1586000048
commit
fb22d7cdc4
3 changed files with 260 additions and 171 deletions
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@ -109,8 +109,7 @@ void FstData::extractVarNames()
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}
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if (clean_name[0]=='\\')
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clean_name = clean_name.substr(1);
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//log("adding %s.%s\n",var.scope.c_str(), clean_name.c_str());
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name_to_handle[var.scope+"."+clean_name] = h->u.var.handle;
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break;
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}
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@ -118,48 +117,6 @@ void FstData::extractVarNames()
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}
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}
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static void reconstruct_edges_varlen(void *user_data, uint64_t pnt_time, fstHandle pnt_facidx, const unsigned char *pnt_value, uint32_t plen)
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{
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FstData *ptr = (FstData*)user_data;
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ptr->reconstruct_edges_callback(pnt_time, pnt_facidx, pnt_value, plen);
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}
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static void reconstruct_edges(void *user_data, uint64_t pnt_time, fstHandle pnt_facidx, const unsigned char *pnt_value)
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{
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FstData *ptr = (FstData*)user_data;
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uint32_t plen = (pnt_value) ? strlen((const char *)pnt_value) : 0;
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ptr->reconstruct_edges_callback(pnt_time, pnt_facidx, pnt_value, plen);
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}
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void FstData::reconstruct_edges_callback(uint64_t pnt_time, fstHandle pnt_facidx, const unsigned char *pnt_value, uint32_t /* plen */)
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{
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std::string val = std::string((const char *)pnt_value);
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std::string prev = last_data[pnt_facidx];
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if (pnt_time>=start_time) {
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if (prev!="1" && val=="1")
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edges.push_back(pnt_time);
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if (prev!="0" && val=="0")
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edges.push_back(pnt_time);
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}
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last_data[pnt_facidx] = val;
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}
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std::vector<uint64_t> FstData::getAllEdges(std::vector<fstHandle> &signal, uint64_t start, uint64_t end)
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{
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start_time = start;
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end_time = end;
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last_data.clear();
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for(auto &s : signal) {
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last_data[s] = "x";
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}
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edges.clear();
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fstReaderSetLimitTimeRange(ctx, start_time, end_time);
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fstReaderClrFacProcessMaskAll(ctx);
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for(const auto sig : signal)
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fstReaderSetFacProcessMask(ctx,sig);
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fstReaderIterBlocks2(ctx, reconstruct_edges, reconstruct_edges_varlen, this, nullptr);
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return edges;
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}
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static void reconstruct_clb_varlen_attimes(void *user_data, uint64_t pnt_time, fstHandle pnt_facidx, const unsigned char *pnt_value, uint32_t plen)
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{
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@ -176,77 +133,65 @@ static void reconstruct_clb_attimes(void *user_data, uint64_t pnt_time, fstHandl
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void FstData::reconstruct_callback_attimes(uint64_t pnt_time, fstHandle pnt_facidx, const unsigned char *pnt_value, uint32_t /* plen */)
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{
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if (sample_times_ndx >= sample_times.size()) return;
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uint64_t time = sample_times[sample_times_ndx];
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if (pnt_time > end_time) return;
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// if we are past the timestamp
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if (pnt_time > time) {
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for (auto const& c : last_data)
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{
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handle_to_data[c.first].push_back(std::make_pair(time,c.second));
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size_t index = handle_to_data[c.first].size() - 1;
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time_to_index[c.first][time] = index;
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bool is_clock = false;
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if (!all_samples) {
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for(auto &s : clk_signals) {
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if (s==pnt_facidx) {
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is_clock=true;
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break;
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}
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}
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}
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if (pnt_time > past_time) {
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past_data = last_data;
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past_time = pnt_time;
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}
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if (pnt_time > last_time) {
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if (all_samples) {
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callback(last_time);
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last_time = pnt_time;
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} else {
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if (is_clock) {
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std::string val = std::string((const char *)pnt_value);
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std::string prev = past_data[pnt_facidx];
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if ((prev!="1" && val=="1") || (prev!="0" && val=="0")) {
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callback(last_time);
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last_time = pnt_time;
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}
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}
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}
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sample_times_ndx++;
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}
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// always update last_data
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last_data[pnt_facidx] = std::string((const char *)pnt_value);
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}
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void FstData::reconstructAtTimes(std::vector<fstHandle> &signal, std::vector<uint64_t> time)
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void FstData::reconstructAllAtTimes(std::vector<fstHandle> &signal, uint64_t start, uint64_t end, CallbackFunction cb)
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{
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handle_to_data.clear();
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time_to_index.clear();
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clk_signals = signal;
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callback = cb;
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start_time = start;
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end_time = end;
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last_data.clear();
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sample_times_ndx = 0;
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sample_times = time;
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fstReaderSetUnlimitedTimeRange(ctx);
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fstReaderClrFacProcessMaskAll(ctx);
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for(const auto sig : signal)
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fstReaderSetFacProcessMask(ctx,sig);
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fstReaderIterBlocks2(ctx, reconstruct_clb_attimes, reconstruct_clb_varlen_attimes, this, nullptr);
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if (time_to_index[signal.back()].count(time.back())==0) {
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for (auto const& c : last_data)
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{
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handle_to_data[c.first].push_back(std::make_pair(time.back(),c.second));
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size_t index = handle_to_data[c.first].size() - 1;
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time_to_index[c.first][time.back()] = index;
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}
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}
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}
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void FstData::reconstructAllAtTimes(std::vector<uint64_t> time)
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{
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handle_to_data.clear();
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time_to_index.clear();
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last_data.clear();
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sample_times_ndx = 0;
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sample_times = time;
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last_time = start_time;
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past_data.clear();
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past_time = start_time;
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all_samples = clk_signals.empty();
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fstReaderSetUnlimitedTimeRange(ctx);
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fstReaderSetFacProcessMaskAll(ctx);
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fstReaderIterBlocks2(ctx, reconstruct_clb_attimes, reconstruct_clb_varlen_attimes, this, nullptr);
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if (time_to_index[1].count(time.back())==0) {
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for (auto const& c : last_data)
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{
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handle_to_data[c.first].push_back(std::make_pair(time.back(),c.second));
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size_t index = handle_to_data[c.first].size() - 1;
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time_to_index[c.first][time.back()] = index;
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}
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}
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callback(last_time);
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if (last_time!=end_time)
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callback(end_time);
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}
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std::string FstData::valueAt(fstHandle signal, uint64_t time)
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std::string FstData::valueOf(fstHandle signal)
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{
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if (handle_to_data.find(signal) == handle_to_data.end())
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if (past_data.find(signal) == past_data.end())
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log_error("Signal id %d not found\n", (int)signal);
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auto &data = handle_to_data[signal];
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if (time_to_index[signal].count(time)!=0) {
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size_t index = time_to_index[signal][time];
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return data.at(index).second;
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} else {
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log_error("No data for signal %d at time %d\n", (int)signal, (int)time);
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}
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return past_data[signal];
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}
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@ -25,6 +25,9 @@
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YOSYS_NAMESPACE_BEGIN
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typedef std::function<void(uint64_t)> CallbackFunction;
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struct fst_end_of_data_exception { };
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struct FstVar
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{
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fstHandle id;
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@ -45,14 +48,10 @@ class FstData
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std::vector<FstVar>& getVars() { return vars; };
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void reconstruct_edges_callback(uint64_t pnt_time, fstHandle pnt_facidx, const unsigned char *pnt_value, uint32_t plen);
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std::vector<uint64_t> getAllEdges(std::vector<fstHandle> &signal, uint64_t start_time, uint64_t end_time);
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void reconstruct_callback_attimes(uint64_t pnt_time, fstHandle pnt_facidx, const unsigned char *pnt_value, uint32_t plen);
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void reconstructAtTimes(std::vector<fstHandle> &signal,std::vector<uint64_t> time);
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void reconstructAllAtTimes(std::vector<uint64_t> time);
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void reconstructAllAtTimes(std::vector<fstHandle> &signal, uint64_t start_time, uint64_t end_time, CallbackFunction cb);
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std::string valueAt(fstHandle signal, uint64_t time);
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std::string valueOf(fstHandle signal);
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fstHandle getHandle(std::string name);
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double getTimescale() { return timescale; }
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const char *getTimescaleString() { return timescale_str.c_str(); }
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@ -64,16 +63,17 @@ private:
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std::vector<FstVar> vars;
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std::map<fstHandle, FstVar> handle_to_var;
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std::map<std::string, fstHandle> name_to_handle;
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std::map<fstHandle, std::vector<std::pair<uint64_t, std::string>>> handle_to_data;
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std::map<fstHandle, std::string> last_data;
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std::map<fstHandle, std::map<uint64_t, size_t>> time_to_index;
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std::vector<uint64_t> sample_times;
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size_t sample_times_ndx;
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uint64_t last_time;
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std::map<fstHandle, std::string> past_data;
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uint64_t past_time;
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double timescale;
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std::string timescale_str;
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uint64_t start_time;
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uint64_t end_time;
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std::vector<uint64_t> edges;
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CallbackFunction callback;
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std::vector<fstHandle> clk_signals;
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bool all_samples;
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};
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YOSYS_NAMESPACE_END
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