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Added basic support for $expect cells

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This commit is contained in:
Clifford Wolf 2016-07-13 16:56:17 +02:00
parent b3155af5f6
commit 721f1f5ecf
16 changed files with 82 additions and 19 deletions
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9
kernel/satgen.h
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@ -69,6 +69,7 @@ struct SatGen
SigPool initial_state;
std::map<std::string, RTLIL::SigSpec> asserts_a, asserts_en;
std::map<std::string, RTLIL::SigSpec> assumes_a, assumes_en;
std::map<std::string, RTLIL::SigSpec> expects_a, expects_en;
std::map<std::string, std::map<RTLIL::SigBit, int>> imported_signals;
bool ignore_div_by_zero;
bool model_undef;
@ -1346,6 +1347,14 @@ struct SatGen
return true;
}
if (cell->type == "$expect")
{
std::string pf = prefix + (timestep == -1 ? "" : stringf("@%d:", timestep));
expects_a[pf].append((*sigmap)(cell->getPort("\\A")));
expects_en[pf].append((*sigmap)(cell->getPort("\\EN")));
return true;
}
// Unsupported internal cell types: $pow $lut
// .. and all sequential cells except $dff and $_DFF_[NP]_
return false;