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sim: provide a signal constructor with an init_state (#210)

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The current SignalSinkPort and SignalSourcePort have no ways to assign
the init value of the state. Add a new constructor for them with the
param init_state

Bug: 293410800
Test: boot to linux
Change-Id: Idde0a12aa0ddd0c9c599ef47059674fb12aa5d68
Reviewed-on:
https://soc-sim-external-review.googlesource.com/c/gem5/gem5/+/13159
Gem5-Virtual-Platform-Presubmit-Ready: Johnny Ko <johnnyko@google.com>
Reviewed-by: Yu-hsin Wang <yuhsingw@google.com>
Perf-Presubmit-Ready: Johnny Ko <johnnyko@google.com>
Gem5-Virtual-Platform-Verified: kokoro <noreply+kokoro@google.com>
Perf-Verified: kokoro <noreply+kokoro@google.com>
This commit is contained in:
Giacomo Travaglini
2023-08-24 18:06:21 +01:00
committed by GitHub
parent e77666d9e8 76fe71ebd0
commit 56a8ab3f3c
1 changed files with 18 additions and 6 deletions
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24
src/sim/signal.hh
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@@ -79,6 +79,8 @@ class SignalSinkPort : public Port
_source = dynamic_cast<SignalSourcePort<State> *>(&peer);
fatal_if(!_source, "Attempt to bind signal pin %s to "
"incompatible pin %s", name(), peer.name());
// The state of sink has to match the state of source.
_state = _source->state();
Port::bind(peer);
}
void
@@ -94,12 +96,22 @@ class SignalSourcePort : public Port
{
private:
SignalSinkPort<State> *sink = nullptr;
State _state = {};
State _state;
public:
SignalSourcePort(const std::string &_name, PortID _id=InvalidPortID) :
Port(_name, _id)
{}
SignalSourcePort(const std::string &_name, PortID _id = InvalidPortID)
: Port(_name, _id)
{
_state = {};
}
// Give an initial value to the _state instead of using a default value.
SignalSourcePort(const std::string &_name, PortID _id,
const State &init_state)
: SignalSourcePort(_name, _id)
{
_state = init_state;
}
void
set(const State &new_state)
@@ -126,6 +138,6 @@ class SignalSourcePort : public Port
}
};
} // namespace gem5
} // namespace gem5
#endif //__SIM_SIGNAL_HH__
#endif //__SIM_SIGNAL_HH__