From 520de19f86cce4a97edd5effcb80ab7f54542110 Mon Sep 17 00:00:00 2001
From: Colin Schmidt <colins@eecs.berkeley.edu>
Date: Fri, 16 Aug 2019 11:06:10 -0700
Subject: [PATCH] Make waveforms precious (#204)

* Make waveforms precious
* Fix typo in run-binary-debug
---
 common.mk               | 2 +-
 sims/vcs/Makefile       | 1 +
 sims/verilator/Makefile | 1 +
 3 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/common.mk b/common.mk
index 5c33317..3c333c6 100644
--- a/common.mk
+++ b/common.mk
@@ -93,7 +93,7 @@ run-binary-fast: $(sim)
 # helper rules to run simulator with as much debug info as possible
 #########################################################################################
 run-binary-debug: $(sim_debug)
-	(set -o pipefail && $(sim_debug) $(PERMISSIVE_ON) +max-cycles=$(timeout_cycles) $(SIM_FLAGS) $(VERBOSE_FLAG) $(WAVEFORM_FLAG) $(PERMISSIVE_OFF) $(BINARY) 3>&1 1>&2 2>&3 | spike-dasm > $(sim_out_name).out)
+	(set -o pipefail && $(sim_debug) $(PERMISSIVE_ON) +max-cycles=$(timeout_cycles) $(SIM_FLAGS) $(VERBOSE_FLAGS) $(WAVEFORM_FLAG) $(PERMISSIVE_OFF) $(BINARY) 3>&1 1>&2 2>&3 | spike-dasm > $(sim_out_name).out)
 
 run-fast: run-asm-tests-fast run-bmark-tests-fast
 
diff --git a/sims/vcs/Makefile b/sims/vcs/Makefile
index fa05531..d897452 100644
--- a/sims/vcs/Makefile
+++ b/sims/vcs/Makefile
@@ -90,6 +90,7 @@ $(sim_debug) : $(sim_vsrcs) $(sim_common_files)
 #########################################################################################
 # create a vcs vpd rule
 #########################################################################################
+.PRECIOUS: $(output_dir)/%.vpd %.vpd
 $(output_dir)/%.vpd: $(output_dir)/% $(sim_debug)
 	$(sim_debug) $(PERMISSIVE_ON) +max-cycles=$(timeout_cycles) $(SIM_FLAGS) $(VERBOSE_FLAGS) +vcdplusfile=$@ $(PERMISSIVE_OFF) $<
 
diff --git a/sims/verilator/Makefile b/sims/verilator/Makefile
index d717aa6..77514e2 100644
--- a/sims/verilator/Makefile
+++ b/sims/verilator/Makefile
@@ -105,6 +105,7 @@ $(sim_debug): $(model_mk_debug)
 #########################################################################################
 # create a verilator vpd rule
 #########################################################################################
+.PRECIOUS: $(output_dir)/%.vpd %.vcd
 $(output_dir)/%.vpd: $(output_dir)/% $(sim_debug)
 	rm -f $@.vcd && mkfifo $@.vcd
 	vcd2vpd $@.vcd $@ > /dev/null &