From 876ee63ad67efd11b753d8de3c46e60d1b7df7b8 Mon Sep 17 00:00:00 2001
From: Tim Newsome <tim@sifive.com>
Date: Fri, 21 Aug 2020 17:50:00 -0700
Subject: Add header to .h files. (#48)

The header explains where the file came from.
---
 Makefile | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index d322c44..294513a 100644
--- a/Makefile
+++ b/Makefile
@@ -13,7 +13,12 @@ ALL_OPCODES := opcodes-pseudo $(ALL_REAL_OPCODES) opcodes-rvv-pseudo
 install: $(ISASIM_H) $(PK_H) $(ENV_H) $(OPENOCD_H) inst.chisel instr-table.tex priv-instr-table.tex
 
 $(ISASIM_H) $(PK_H) $(ENV_H) $(OPENOCD_H): $(ALL_OPCODES) parse_opcodes encoding.h
-	cp encoding.h $@
+	echo "/*" > $@
+	echo " * This file is auto-generated by running 'make $@' in" >> $@
+	echo " * https://github.com/riscv/riscv-opcodes (`git log -1 --format="format:%h"`)" >> $@
+	echo " */" >> $@
+	echo >> $@
+	cat encoding.h >> $@
 	cat $(ALL_OPCODES) | python ./parse_opcodes -c >> $@
 
 inst.chisel: $(ALL_OPCODES) parse_opcodes
-- 
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