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This commit is contained in:
Wilson Snyder
2009-07-16 08:59:08 -04:00
parent 6a36bd8514
commit 1c833f8a9a
1 changed files with 35 additions and 6 deletions
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@@ -2241,26 +2241,55 @@ untarred directory.
In your top level C code, call Verilated::traceEverOn(true). Then create a In your top level C code, call Verilated::traceEverOn(true). Then create a
SpTraceVcdC object, and in your main loop call "trace_object->dump(time)" SpTraceVcdC object, and in your main loop call "trace_object->dump(time)"
every time step, and finally call "trace_object->close()". For an example, every time step, and finally call "trace_object->close()". For an example,
see the call to SpTraceVcdC in the test_c/sim_main.cpp file of the see below and the test_c/sim_main.cpp file of the distribution.
distribution.
You also need to compile SpTraceVcdC.cpp and add it to your link. This is You also need to compile SpTraceVcdC.cpp and add it to your link. This is
done for you if using the Verilator --exe flag. done for you if using the Verilator --exe flag.
#include "SpTraceVcdC.cpp"
...
int main(int argc, char **argv, char **env) {
...
Verilated::traceEverOn(true);
SpTraceVcdCFile* tfp = new SpTraceVcdCFile;
topp->trace (tfp, 99);
tfp->open ("obj_dir/t_trace_ena_cc/simx.vcd");
...
while (sc_time_stamp() < sim_time && !Verilated::gotFinish()) {
main_time += #;
tfp->dump (main_time);
}
tfp->close();
}
=item How do I generate waveforms (traces) in SystemC/SystemPerl? =item How do I generate waveforms (traces) in SystemC/SystemPerl?
Add the --trace switch to Verilator, and make sure the SystemPerl package Add the --trace switch to Verilator, and make sure the SystemPerl package
is installed. is installed.
In your top level C sc_main code, call Verilated::traceEverOn(true). Then In your top level C sc_main code, include SpTraceVcd.h. Then call
create a SpTraceFile object as you would create a normal SystemC trace Verilated::traceEverOn(true). Then create a SpTraceFile object as you
file. For an example, see the call to SpTraceFile in the would create a normal SystemC trace file. For an example, see the call to
test_sp/sc_main.cpp file of the distribution. SpTraceFile in the test_sp/sc_main.cpp file of the distribution, and below.
Alternatively you may use the C++ trace mechanism described in the previous Alternatively you may use the C++ trace mechanism described in the previous
question, however the timescale and timeprecision will not inherited from question, however the timescale and timeprecision will not inherited from
your SystemC settings. your SystemC settings.
#include "SpTraceVcd.cpp"
...
int main(int argc, char **argv, char **env) {
...
Verilated::traceEverOn(true);
SpTraceVcdFile* tfp = new SpTraceVcdFile;
topp->trace (tfp, 99);
tfp->open ("obj_dir/t_trace_ena_cc/simx.vcd");
...
sc_start(1);
...
tfp->close();
}
=item How do I view waveforms (traces)? =item How do I view waveforms (traces)?
Verilator makes standard VCD (Value Change Dump) files. They are viewable Verilator makes standard VCD (Value Change Dump) files. They are viewable