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verilog_backend: add -sv option, make -o <filename>.sv work.

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See #2271.
This commit is contained in:
whitequark 2020-07-16 10:34:21 +00:00
parent 3209c0762a
commit d9f680b236
2 changed files with 20 additions and 11 deletions
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29
backends/verilog/verilog_backend.cc
View file

@ -33,7 +33,7 @@
USING_YOSYS_NAMESPACE
PRIVATE_NAMESPACE_BEGIN
bool verbose, norename, noattr, attr2comment, noexpr, nodec, nohex, nostr, extmem, defparam, decimal, siminit;
bool verbose, norename, noattr, attr2comment, noexpr, nodec, nohex, nostr, extmem, defparam, decimal, siminit, systemverilog;
int auto_name_counter, auto_name_offset, auto_name_digits, extmem_counter;
std::map<RTLIL::IdString, int> auto_name_map;
std::set<RTLIL::IdString> reg_wires, reg_ct;
@ -617,7 +617,7 @@ bool dump_cell_expr(std::ostream &f, std::string indent, RTLIL::Cell *cell)
}
dump_attributes(f, indent, cell->attributes);
f << stringf("%s" "always @(%sedge ", indent.c_str(), cell->type[6] == 'P' ? "pos" : "neg");
f << stringf("%s" "always%s @(%sedge ", indent.c_str(), systemverilog ? "_ff" : "", cell->type[6] == 'P' ? "pos" : "neg");
dump_sigspec(f, cell->getPort(ID::C));
if (cell->type[7] != '_') {
f << stringf(" or %sedge ", cell->type[7] == 'P' ? "pos" : "neg");
@ -660,7 +660,7 @@ bool dump_cell_expr(std::ostream &f, std::string indent, RTLIL::Cell *cell)
}
dump_attributes(f, indent, cell->attributes);
f << stringf("%s" "always @(%sedge ", indent.c_str(), pol_c == 'P' ? "pos" : "neg");
f << stringf("%s" "always%s @(%sedge ", indent.c_str(), systemverilog ? "_ff" : "", pol_c == 'P' ? "pos" : "neg");
dump_sigspec(f, cell->getPort(ID::C));
f << stringf(" or %sedge ", pol_s == 'P' ? "pos" : "neg");
dump_sigspec(f, cell->getPort(ID::S));
@ -1009,7 +1009,7 @@ bool dump_cell_expr(std::ostream &f, std::string indent, RTLIL::Cell *cell)
}
for (int i = 0; i < width; i++) {
f << stringf("%s" "always @(%sedge ", indent.c_str(), pol_clk ? "pos" : "neg");
f << stringf("%s" "always%s @(%sedge ", indent.c_str(), systemverilog ? "_ff" : "", pol_clk ? "pos" : "neg");
dump_sigspec(f, sig_clk);
f << stringf(", %sedge ", pol_set ? "pos" : "neg");
dump_sigspec(f, sig_set);
@ -1067,7 +1067,7 @@ bool dump_cell_expr(std::ostream &f, std::string indent, RTLIL::Cell *cell)
f << ";\n";
}
f << stringf("%s" "always @(%sedge ", indent.c_str(), pol_clk ? "pos" : "neg");
f << stringf("%s" "always%s @(%sedge ", indent.c_str(), systemverilog ? "_ff" : "", pol_clk ? "pos" : "neg");
dump_sigspec(f, sig_clk);
if (cell->type == ID($adff)) {
f << stringf(" or %sedge ", pol_arst ? "pos" : "neg");
@ -1121,7 +1121,7 @@ bool dump_cell_expr(std::ostream &f, std::string indent, RTLIL::Cell *cell)
f << ";\n";
}
f << stringf("%s" "always @*\n", indent.c_str());
f << stringf("%s" "always%s\n", indent.c_str(), systemverilog ? "_latch" : " @*");
f << stringf("%s" " if (%s", indent.c_str(), pol_en ? "" : "!");
dump_sigspec(f, sig_en);
@ -1392,7 +1392,7 @@ bool dump_cell_expr(std::ostream &f, std::string indent, RTLIL::Cell *cell)
std::vector<std::string> lof_lines = pair.second;
if( clk_domain != "")
{
f << stringf("%s" "always @(%s) begin\n", indent.c_str(), clk_domain.c_str());
f << stringf("%s" "always%s @(%s) begin\n", indent.c_str(), systemverilog ? "_ff" : "", clk_domain.c_str());
for(auto &line : lof_lines)
f << stringf("%s%s" "%s", indent.c_str(), indent.c_str(), line.c_str());
f << stringf("%s" "end\n", indent.c_str());
@ -1410,7 +1410,7 @@ bool dump_cell_expr(std::ostream &f, std::string indent, RTLIL::Cell *cell)
if (cell->type.in(ID($assert), ID($assume), ID($cover)))
{
f << stringf("%s" "always @* if (", indent.c_str());
f << stringf("%s" "always%s if (", indent.c_str(), systemverilog ? "_comb" : " @*");
dump_sigspec(f, cell->getPort(ID::EN));
f << stringf(") %s(", cell->type.c_str()+1);
dump_sigspec(f, cell->getPort(ID::A));
@ -1717,7 +1717,7 @@ void dump_process(std::ostream &f, std::string indent, RTLIL::Process *proc, boo
return;
}
f << stringf("%s" "always @* begin\n", indent.c_str());
f << stringf("%s" "always%s begin\n", indent.c_str(), systemverilog ? "_comb" : " @*");
dump_case_body(f, indent, &proc->root_case, true);
std::string backup_indent = indent;
@ -1728,11 +1728,11 @@ void dump_process(std::ostream &f, std::string indent, RTLIL::Process *proc, boo
indent = backup_indent;
if (sync->type == RTLIL::STa) {
f << stringf("%s" "always @* begin\n", indent.c_str());
f << stringf("%s" "always%s begin\n", indent.c_str(), systemverilog ? "_comb" : " @*");
} else if (sync->type == RTLIL::STi) {
f << stringf("%s" "initial begin\n", indent.c_str());
} else {
f << stringf("%s" "always @(", indent.c_str());
f << stringf("%s" "always%s @(", indent.c_str(), systemverilog ? "_ff" : "");
if (sync->type == RTLIL::STp || sync->type == RTLIL::ST1)
f << stringf("posedge ");
if (sync->type == RTLIL::STn || sync->type == RTLIL::ST0)
@ -1881,6 +1881,9 @@ struct VerilogBackend : public Backend {
log("\n");
log("Write the current design to a Verilog file.\n");
log("\n");
log(" -sv\n");
log(" with this option, SystemVerilog constructs like always_comb are used\n");
log("\n");
log(" -norename\n");
log(" without this option all internal object names (the ones with a dollar\n");
log(" instead of a backslash prefix) are changed to short names in the\n");
@ -2007,6 +2010,10 @@ struct VerilogBackend : public Backend {
size_t argidx;
for (argidx = 1; argidx < args.size(); argidx++) {
std::string arg = args[argidx];
if (arg == "-sv") {
systemverilog = true;
continue;
}
if (arg == "-norename") {
norename = true;
continue;

2
kernel/yosys.cc
View file

@ -1050,6 +1050,8 @@ void run_backend(std::string filename, std::string command, RTLIL::Design *desig
if (command == "auto") {
if (filename.size() > 2 && filename.compare(filename.size()-2, std::string::npos, ".v") == 0)
command = "verilog";
else if (filename.size() > 3 && filename.compare(filename.size()-3, std::string::npos, ".sv") == 0)
command = "verilog -sv";
else if (filename.size() > 3 && filename.compare(filename.size()-3, std::string::npos, ".il") == 0)
command = "ilang";
else if (filename.size() > 3 && filename.compare(filename.size()-3, std::string::npos, ".cc") == 0)