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yosys-smtbmc meminit support

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This commit is contained in:
Clifford Wolf 2016-09-08 11:16:12 +02:00
parent 209a3d9ffc
commit 14bfd3c5c1
4 changed files with 52 additions and 5 deletions
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26
backends/smt2/smt2.cc
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@ -736,6 +736,26 @@ struct Smt2Worker
std::string expr_d = stringf("(|%s#%d#%d| state)", get_id(module), arrayid, wr_ports);
std::string expr_q = stringf("(|%s#%d#0| next_state)", get_id(module), arrayid);
trans.push_back(stringf(" (= %s %s) ; %s\n", expr_d.c_str(), expr_q.c_str(), get_id(cell)));
Const init_data = cell->getParam("\\INIT");
int memsize = cell->getParam("\\SIZE").as_int();
for (int i = 0; i < memsize; i++)
{
if (GetSize(init_data) < i*width)
break;
Const initword = init_data.extract(i*width, width, State::Sx);
bool gen_init_constr = false;
for (auto bit : initword.bits)
if (bit == State::S0 || bit == State::S1)
gen_init_constr = true;
init_list.push_back(stringf("(= (select (|%s#%d#0| state) #b%s) #b%s) ; %s[%d]",
get_id(module), arrayid, Const(i, abits).as_string().c_str(),
initword.as_string().c_str(), get_id(cell), i));
}
}
}
}
@ -864,8 +884,8 @@ struct Smt2Backend : public Backend {
log(" this will print the recursive walk used to export the modules.\n");
log("\n");
log(" -nobv\n");
log(" disable support for BitVec (FixedSizeBitVectors theory). with this\n");
log(" option set multi-bit wires are represented using the BitVec sort and\n");
log(" disable support for BitVec (FixedSizeBitVectors theory). without this\n");
log(" option multi-bit wires are represented using the BitVec sort and\n");
log(" support for coarse grain cells (incl. arithmetic) is enabled.\n");
log("\n");
log(" -nomem\n");
@ -878,7 +898,7 @@ struct Smt2Backend : public Backend {
log("\n");
log(" -wires\n");
log(" create '<mod>_n' functions for all public wires. by default only ports,\n");
log(" registers, and wires with the 'keep' attribute set are exported.\n");
log(" registers, and wires with the 'keep' attribute are exported.\n");
log("\n");
log(" -tpl <template_file>\n");
log(" use the given template file. the line containing only the token '%%%%'\n");