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Added "write_blif -blackbox"

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based on code by Eddie Hung from
https://github.com/eddiehung/yosys/commit/1e481661cb4a4
This commit is contained in:
Clifford Wolf 2014-12-14 17:45:03 +01:00
parent 32dce4a870
commit 59d11978fc
1 changed files with 16 additions and 2 deletions
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18
backends/blif/blif.cc
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@ -38,12 +38,13 @@ struct BlifDumperConfig
bool impltf_mode; bool impltf_mode;
bool gates_mode; bool gates_mode;
bool param_mode; bool param_mode;
bool blackbox_mode;
std::string buf_type, buf_in, buf_out; std::string buf_type, buf_in, buf_out;
std::map<RTLIL::IdString, std::pair<RTLIL::IdString, RTLIL::IdString>> unbuf_types; std::map<RTLIL::IdString, std::pair<RTLIL::IdString, RTLIL::IdString>> unbuf_types;
std::string true_type, true_out, false_type, false_out; std::string true_type, true_out, false_type, false_out;
BlifDumperConfig() : icells_mode(false), conn_mode(false), impltf_mode(false), gates_mode(false), param_mode(false) { } BlifDumperConfig() : icells_mode(false), conn_mode(false), impltf_mode(false), gates_mode(false), param_mode(false), blackbox_mode(false) { }
}; };
struct BlifDumper struct BlifDumper
@ -130,6 +131,12 @@ struct BlifDumper
} }
f << stringf("\n"); f << stringf("\n");
if (module->get_bool_attribute("\\blackbox")) {
f << stringf(".blackbox\n");
f << stringf(".end\n");
return;
}
if (!config->impltf_mode) { if (!config->impltf_mode) {
if (!config->false_type.empty()) if (!config->false_type.empty())
f << stringf(".%s %s %s=$false\n", subckt_or_gate(config->false_type), f << stringf(".%s %s %s=$false\n", subckt_or_gate(config->false_type),
@ -314,6 +321,9 @@ struct BlifBackend : public Backend {
log(" -param\n"); log(" -param\n");
log(" use the non-standard .param statement to write module parameters\n"); log(" use the non-standard .param statement to write module parameters\n");
log("\n"); log("\n");
log(" -blackbox\n");
log(" write blackbox cells with .blackbox statement.\n");
log("\n");
log(" -impltf\n"); log(" -impltf\n");
log(" do not write definitions for the $true and $false wires.\n"); log(" do not write definitions for the $true and $false wires.\n");
log("\n"); log("\n");
@ -374,6 +384,10 @@ struct BlifBackend : public Backend {
config.param_mode = true; config.param_mode = true;
continue; continue;
} }
if (args[argidx] == "-blackbox") {
config.blackbox_mode = true;
continue;
}
if (args[argidx] == "-impltf") { if (args[argidx] == "-impltf") {
config.impltf_mode = true; config.impltf_mode = true;
continue; continue;
@ -394,7 +408,7 @@ struct BlifBackend : public Backend {
for (auto module_it : design->modules_) for (auto module_it : design->modules_)
{ {
RTLIL::Module *module = module_it.second; RTLIL::Module *module = module_it.second;
if (module->get_bool_attribute("\\blackbox")) if (module->get_bool_attribute("\\blackbox") && !config.blackbox_mode)
continue; continue;
if (module->processes.size() != 0) if (module->processes.size() != 0)