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authorClifford Wolf <clifford@clifford.at>2014-02-21 10:40:15 +0100
committerClifford Wolf <clifford@clifford.at>2014-02-21 10:40:15 +0100
commit79f8944811cba40ca0f3bda98ab951395d24fa0b (patch)
tree2388b33e42e2931b1c71e5c7949b3532e1b85639 /backends
parent2aff7b2a47d2ad65ff34e10f008733da9ef50c4a (diff)
Renamed "write_blif -subckt" to "write_blif -icells" and added -gates and -param
Diffstat (limited to 'backends')
-rw-r--r--backends/blif/blif.cc82
1 files changed, 65 insertions, 17 deletions
diff --git a/backends/blif/blif.cc b/backends/blif/blif.cc
index f5a98276..1c06fe51 100644
--- a/backends/blif/blif.cc
+++ b/backends/blif/blif.cc
@@ -31,14 +31,16 @@
struct BlifDumperConfig
{
- bool subckt_mode;
+ bool icells_mode;
bool conn_mode;
bool impltf_mode;
+ bool gates_mode;
+ bool param_mode;
std::string buf_type, buf_in, buf_out;
std::string true_type, true_out, false_type, false_out;
- BlifDumperConfig() : subckt_mode(false), conn_mode(false), impltf_mode(false) { }
+ BlifDumperConfig() : icells_mode(false), conn_mode(false), impltf_mode(false), gates_mode(false), param_mode(false) { }
};
struct BlifDumper
@@ -86,6 +88,17 @@ struct BlifDumper
return cstr_buf.back().c_str();
}
+ const char *subckt_or_gate(std::string cell_type)
+ {
+ if (!config->gates_mode)
+ return "subckt";
+ if (!design->modules.count(RTLIL::escape_id(cell_type)))
+ return "gate";
+ if (design->modules.at(RTLIL::escape_id(cell_type))->get_bool_attribute("\\blackbox"))
+ return "gate";
+ return "subckt";
+ }
+
void dump()
{
fprintf(f, "\n");
@@ -119,11 +132,13 @@ struct BlifDumper
if (!config->impltf_mode) {
if (!config->false_type.empty())
- fprintf(f, ".subckt %s %s=$false\n", config->false_type.c_str(), config->false_out.c_str());
+ fprintf(f, ".%s %s %s=$false\n", subckt_or_gate(config->false_type),
+ config->false_type.c_str(), config->false_out.c_str());
else
fprintf(f, ".names $false\n");
if (!config->true_type.empty())
- fprintf(f, ".subckt %s %s=$true\n", config->true_type.c_str(), config->true_out.c_str());
+ fprintf(f, ".%s %s %s=$true\n", subckt_or_gate(config->true_type),
+ config->true_type.c_str(), config->true_out.c_str());
else
fprintf(f, ".names $true\n1\n");
}
@@ -132,50 +147,50 @@ struct BlifDumper
{
RTLIL::Cell *cell = cell_it.second;
- if (!config->subckt_mode && cell->type == "$_INV_") {
+ if (!config->icells_mode && cell->type == "$_INV_") {
fprintf(f, ".names %s %s\n0 1\n",
cstr(cell->connections.at("\\A")), cstr(cell->connections.at("\\Y")));
continue;
}
- if (!config->subckt_mode && cell->type == "$_AND_") {
+ if (!config->icells_mode && cell->type == "$_AND_") {
fprintf(f, ".names %s %s %s\n11 1\n",
cstr(cell->connections.at("\\A")), cstr(cell->connections.at("\\B")), cstr(cell->connections.at("\\Y")));
continue;
}
- if (!config->subckt_mode && cell->type == "$_OR_") {
+ if (!config->icells_mode && cell->type == "$_OR_") {
fprintf(f, ".names %s %s %s\n1- 1\n-1 1\n",
cstr(cell->connections.at("\\A")), cstr(cell->connections.at("\\B")), cstr(cell->connections.at("\\Y")));
continue;
}
- if (!config->subckt_mode && cell->type == "$_XOR_") {
+ if (!config->icells_mode && cell->type == "$_XOR_") {
fprintf(f, ".names %s %s %s\n10 1\n01 1\n",
cstr(cell->connections.at("\\A")), cstr(cell->connections.at("\\B")), cstr(cell->connections.at("\\Y")));
continue;
}
- if (!config->subckt_mode && cell->type == "$_MUX_") {
+ if (!config->icells_mode && cell->type == "$_MUX_") {
fprintf(f, ".names %s %s %s %s\n1-0 1\n-11 1\n",
cstr(cell->connections.at("\\A")), cstr(cell->connections.at("\\B")),
cstr(cell->connections.at("\\S")), cstr(cell->connections.at("\\Y")));
continue;
}
- if (!config->subckt_mode && cell->type == "$_DFF_N_") {
+ if (!config->icells_mode && cell->type == "$_DFF_N_") {
fprintf(f, ".latch %s %s fe %s\n",
cstr(cell->connections.at("\\D")), cstr(cell->connections.at("\\Q")), cstr(cell->connections.at("\\C")));
continue;
}
- if (!config->subckt_mode && cell->type == "$_DFF_P_") {
+ if (!config->icells_mode && cell->type == "$_DFF_P_") {
fprintf(f, ".latch %s %s re %s\n",
cstr(cell->connections.at("\\D")), cstr(cell->connections.at("\\Q")), cstr(cell->connections.at("\\C")));
continue;
}
- fprintf(f, ".subckt %s", cstr(cell->type));
+ fprintf(f, ".%s %s", subckt_or_gate(cell->type), cstr(cell->type));
for (auto &conn : cell->connections)
for (int i = 0; i < conn.second.width; i++) {
if (conn.second.width == 1)
@@ -185,6 +200,24 @@ struct BlifDumper
fprintf(f, "=%s", cstr(conn.second.extract(i, 1)));
}
fprintf(f, "\n");
+
+ if (config->param_mode)
+ for (auto &param : cell->parameters) {
+ fprintf(f, ".param %s ", RTLIL::id2cstr(param.first));
+ if (param.second.flags & RTLIL::CONST_FLAG_STRING) {
+ std::string str = param.second.decode_string();
+ fprintf(f, "\"");
+ for (char ch : str)
+ if (ch == '"' || ch == '\\')
+ fprintf(f, "\\%c", ch);
+ else if (ch < 32 || ch >= 127)
+ fprintf(f, "\\%03o", ch);
+ else
+ fprintf(f, "%c", ch);
+ fprintf(f, "\"\n");
+ } else
+ fprintf(f, "%s\n", param.second.as_string().c_str());
+ }
}
for (auto &conn : module->connections)
@@ -192,7 +225,7 @@ struct BlifDumper
if (config->conn_mode)
fprintf(f, ".conn %s %s\n", cstr(conn.second.extract(i, 1)), cstr(conn.first.extract(i, 1)));
else if (!config->buf_type.empty())
- fprintf(f, ".subckt %s %s=%s %s=%s\n", config->buf_type.c_str(), config->buf_in.c_str(), cstr(conn.second.extract(i, 1)),
+ fprintf(f, ".%s %s %s=%s %s=%s\n", subckt_or_gate(config->buf_type), config->buf_type.c_str(), config->buf_in.c_str(), cstr(conn.second.extract(i, 1)),
config->buf_out.c_str(), cstr(conn.first.extract(i, 1)));
else
fprintf(f, ".names %s %s\n1 1\n", cstr(conn.second.extract(i, 1)), cstr(conn.first.extract(i, 1)));
@@ -232,14 +265,21 @@ struct BlifBackend : public Backend {
log("read by a BLIF parser but a custom tool. It is recommended to not name the output\n");
log("file *.blif when any of this options is used.\n");
log("\n");
- log(" -subckt\n");
+ log(" -icells\n");
log(" do not translate Yosys's internal gates to generic BLIF logic\n");
- log(" functions. Instead create .subckt lines for all cells.\n");
+ log(" functions. Instead create .subckt or .gate lines for all cells.\n");
+ log("\n");
+ log(" -gates\n");
+ log(" print .gate instead of .subckt lines for all cells that are not\n");
+ log(" instantiations of other modules from this design.\n");
log("\n");
log(" -conn\n");
log(" do not generate buffers for connected wires. instead use the\n");
log(" non-standard .conn statement.\n");
log("\n");
+ log(" -param\n");
+ log(" use the non-standard .param statement to write module parameters\n");
+ log("\n");
log(" -impltf\n");
log(" do not write definitions for the $true and $false wires.\n");
log("\n");
@@ -277,14 +317,22 @@ struct BlifBackend : public Backend {
config.false_out = args[++argidx];
continue;
}
- if (args[argidx] == "-subckt") {
- config.subckt_mode = true;
+ if (args[argidx] == "-icells") {
+ config.icells_mode = true;
+ continue;
+ }
+ if (args[argidx] == "-gates") {
+ config.gates_mode = true;
continue;
}
if (args[argidx] == "-conn") {
config.conn_mode = true;
continue;
}
+ if (args[argidx] == "-param") {
+ config.param_mode = true;
+ continue;
+ }
if (args[argidx] == "-impltf") {
config.impltf_mode = true;
continue;