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Added more help messages

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This commit is contained in:
Clifford Wolf 2013-03-01 00:36:19 +01:00
parent cd71c70b4f
commit 7fccad92f7
9 changed files with 121 additions and 11 deletions
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40
passes/techmap/techmap.cc
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@ -48,8 +48,11 @@ static void apply_prefix(std::string prefix, RTLIL::SigSpec &sig, RTLIL::Module
std::map<std::pair<RTLIL::IdString, std::map<RTLIL::IdString, RTLIL::Const>>, RTLIL::Module*> techmap_cache;
static bool techmap_module(RTLIL::Module *module, RTLIL::Design *map)
static bool techmap_module(RTLIL::Design *design, RTLIL::Module *module, RTLIL::Design *map)
{
if (!design->selected(module))
return false;
bool did_something = false;
std::vector<std::string> cell_names;
@ -64,6 +67,9 @@ static bool techmap_module(RTLIL::Module *module, RTLIL::Design *map)
RTLIL::Cell *cell = module->cells[cell_name];
if (!design->selected(module, cell))
continue;
if (map->modules.count(cell->type) == 0)
continue;
@ -157,7 +163,26 @@ static bool techmap_module(RTLIL::Module *module, RTLIL::Design *map)
}
struct TechmapPass : public Pass {
TechmapPass() : Pass("techmap") { }
TechmapPass() : Pass("techmap", "simple technology mapper") { }
virtual void help()
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
log(" techmap [-map filename] [selection]\n");
log("\n");
log("This pass implements a very simple technology mapper than replaces cells in\n");
log("the design with implementations given in form of a verilog or ilang source\n");
log("file.\n");
log("\n");
log(" -map filename\n");
log(" the library of cell implementations to be used.\n");
log(" without this parameter a builtin library is used that\n");
log(" transform the internal RTL cells to the internal gate\n");
log(" library.\n");
log("\n");
log("See 'help extract' for a pass that does the opposite thing.\n");
log("\n");
}
virtual void execute(std::vector<std::string> args, RTLIL::Design *design)
{
log_header("Executing TECHMAP pass (map to technology primitives).\n");
@ -175,11 +200,14 @@ struct TechmapPass : public Pass {
}
extra_args(args, argidx, design);
RTLIL::Design *map = new RTLIL::Design;
FILE *f = filename.empty() ? fmemopen(stdcells_code, strlen(stdcells_code), "rt") : fopen(filename.c_str(), "rt");
if (f == NULL)
log_error("Can't open map file `%s'\n", filename.c_str());
Frontend::frontend_call(map, f, filename.empty() ? "<stdcells.v>" : filename, "verilog");
log_cmd_error("Can't open map file `%s'\n", filename.c_str());
RTLIL::Design *map = new RTLIL::Design;
Frontend::frontend_call(map, f, filename.empty() ? "<stdcells.v>" : filename,
(filename.size() > 3 && filename.substr(filename.size()-3) == ".il") ? "ilang" : "verilog");
fclose(f);
std::map<RTLIL::IdString, RTLIL::Module*> modules_new;
@ -194,7 +222,7 @@ struct TechmapPass : public Pass {
while (did_something) {
did_something = false;
for (auto &mod_it : design->modules)
if (techmap_module(mod_it.second, map))
if (techmap_module(design, mod_it.second, map))
did_something = true;
}