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sim: Improved global clock handling

This commit is contained in:
Jannis Harder 2022-11-25 17:43:51 +01:00
parent 3ecf85e32c
commit 5ff69a0fe2
1 changed files with 14 additions and 13 deletions
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25
passes/sat/sim.cc
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@ -509,7 +509,7 @@ struct SimInstance
}
}
bool update_ph2()
bool update_ph2(bool gclk)
{
bool did_something = false;
@ -567,6 +567,7 @@ struct SimInstance
}
if (ff_data.has_gclk) {
// $ff
if (gclk)
current_q = ff.past_d;
}
if (set_state(ff_data.sig_q, current_q))
@ -616,7 +617,7 @@ struct SimInstance
}
for (auto it : children)
if (it.second->update_ph2()) {
if (it.second->update_ph2(gclk)) {
dirty_children.insert(it.second);
did_something = true;
}
@ -985,7 +986,7 @@ struct SimWorker : SimShared
writer->write(use_signal);
}
void update()
void update(bool gclk)
{
while (1)
{
@ -997,7 +998,7 @@ struct SimWorker : SimShared
if (debug)
log("\n-- ph2 --\n");
if (!top->update_ph2())
if (!top->update_ph2(gclk))
break;
}
@ -1047,7 +1048,7 @@ struct SimWorker : SimShared
set_inports(clock, State::Sx);
set_inports(clockn, State::Sx);
update();
update(false);
register_output_step(0);
@ -1060,7 +1061,7 @@ struct SimWorker : SimShared
set_inports(clock, State::S0);
set_inports(clockn, State::S1);
update();
update(true);
register_output_step(10*cycle + 5);
if (debug)
@ -1076,7 +1077,7 @@ struct SimWorker : SimShared
set_inports(resetn, State::S1);
}
update();
update(true);
register_output_step(10*cycle + 10);
}
@ -1193,7 +1194,7 @@ struct SimWorker : SimShared
initial = false;
}
if (did_something)
update();
update(true);
register_output_step(time);
bool status = top->checkSignals();
@ -1342,12 +1343,12 @@ struct SimWorker : SimShared
set_inports(clock, State::S0);
set_inports(clockn, State::S1);
}
update();
update(true);
register_output_step(10*cycle);
if (!multiclock && cycle) {
set_inports(clock, State::S0);
set_inports(clockn, State::S1);
update();
update(true);
register_output_step(10*cycle + 5);
}
cycle++;
@ -1419,12 +1420,12 @@ struct SimWorker : SimShared
log("Simulating cycle %d.\n", cycle);
set_inports(clock, State::S1);
set_inports(clockn, State::S0);
update();
update(true);
register_output_step(10*cycle+0);
if (!multiclock) {
set_inports(clock, State::S0);
set_inports(clockn, State::S1);
update();
update(true);
register_output_step(10*cycle+5);
}
cycle++;