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introduce define for FST tracing (#2592)

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This is to allow C++ verilator toplevel to support
multiple modes of waveform tracing
VM_TRACE_FST can be used inside a #if VM_TRACE
section to switch between classic .vcd tracing and the
more compact .fst format supported by GTKWAVE
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Markus Krause 2020-10-11 03:17:39 +02:00 committed by GitHub
parent e25a6334cf
commit 0a9ae154be
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3 changed files with 6 additions and 0 deletions
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1
docs/CONTRIBUTORS
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@ -40,6 +40,7 @@ Lukasz Dalek
Maarten De Braekeleer Maarten De Braekeleer
Maciej Sobkowski Maciej Sobkowski
Marco Widmer Marco Widmer
Markus Krause
Marshal Qiao Marshal Qiao
Matthew Ballance Matthew Ballance
Michael Killough Michael Killough

1
include/verilated.mk.in
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@ -54,6 +54,7 @@ VK_CPPFLAGS_ALWAYS += \
-DVM_COVERAGE=$(VM_COVERAGE) \ -DVM_COVERAGE=$(VM_COVERAGE) \
-DVM_SC=$(VM_SC) \ -DVM_SC=$(VM_SC) \
-DVM_TRACE=$(VM_TRACE) \ -DVM_TRACE=$(VM_TRACE) \
-DVM_TRACE_FST=$(VM_TRACE_FST) \
$(CFG_CXXFLAGS_NO_UNUSED) \ $(CFG_CXXFLAGS_NO_UNUSED) \
ifeq ($(CFG_WITH_CCWARN),yes) # Local... Else don't burden users ifeq ($(CFG_WITH_CCWARN),yes) # Local... Else don't burden users

4
src/V3EmitMk.cpp
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@ -65,6 +65,10 @@ public:
of.puts("VM_TRACE = "); of.puts("VM_TRACE = ");
of.puts(v3Global.opt.trace() ? "1" : "0"); of.puts(v3Global.opt.trace() ? "1" : "0");
of.puts("\n"); of.puts("\n");
of.puts("# Tracing output mode in FST format? 0/1 (from --trace-fst)\n");
of.puts("VM_TRACE_FST = ");
of.puts(v3Global.opt.trace() && v3Global.opt.traceFormat().fst() ? "1" : "0");
of.puts("\n");
of.puts("# Tracing threaded output mode? 0/1/N threads (from --trace-thread)\n"); of.puts("# Tracing threaded output mode? 0/1/N threads (from --trace-thread)\n");
of.puts("VM_TRACE_THREADS = "); of.puts("VM_TRACE_THREADS = ");
of.puts(cvtToStr(v3Global.opt.trueTraceThreads())); of.puts(cvtToStr(v3Global.opt.trueTraceThreads()));