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VCD reader support by using external tool

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This commit is contained in:
Miodrag Milanovic 2022-02-28 09:09:07 +01:00
parent ec4af6af2f
commit 8be09b5b24
3 changed files with 21 additions and 0 deletions
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19
kernel/fstdata.cc
View file

@ -22,8 +22,25 @@
USING_YOSYS_NAMESPACE
static std::string file_base_name(std::string const & path)
{
return path.substr(path.find_last_of("/\\") + 1);
}
FstData::FstData(std::string filename) : ctx(nullptr)
{
#if !defined(YOSYS_DISABLE_SPAWN)
std::string filename_trim = file_base_name(filename);
if (filename_trim.size() > 4 && filename_trim.compare(filename_trim.size()-4, std::string::npos, ".vcd") == 0) {
filename_trim.erase(filename_trim.size()-4);
tmp_file = stringf("/tmp/converted_%s.fst", filename_trim.c_str());
std::string cmd = stringf("vcd2fst %s %s", filename.c_str(), tmp_file.c_str());
log("Exec: %s\n", cmd.c_str());
if (run_command(cmd) != 0)
log_cmd_error("Shell command failed!\n");
filename = tmp_file;
}
#endif
const std::vector<std::string> g_units = { "s", "ms", "us", "ns", "ps", "fs", "as", "zs" };
ctx = (fstReaderContext *)fstReaderOpen(filename.c_str());
if (!ctx)
@ -53,6 +70,8 @@ FstData::~FstData()
{
if (ctx)
fstReaderClose(ctx);
if (!tmp_file.empty())
remove(tmp_file.c_str());
}
uint64_t FstData::getStartTime() { return fstReaderGetStartTime(ctx); }

1
kernel/fstdata.h
View file

@ -74,6 +74,7 @@ private:
CallbackFunction callback;
std::vector<fstHandle> clk_signals;
bool all_samples;
std::string tmp_file;
};
YOSYS_NAMESPACE_END