scripts: Add decodetree.py

To be used to decode ARM SVE, but could be used for any fixed-width ISA.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/tests/decode/check.sh b/tests/decode/check.sh
new file mode 100755
index 0000000000..79a06c37cd
--- /dev/null
+++ b/tests/decode/check.sh
@@ -0,0 +1,18 @@
+#!/bin/sh
+# This work is licensed under the terms of the GNU LGPL, version 2 or later.
+# See the COPYING.LIB file in the top-level directory.
+
+PYTHON=$1
+DECODETREE=$2
+E=0
+
+# All of these tests should produce errors
+for i in err_*.decode; do
+    if $PYTHON $DECODETREE $i > /dev/null 2> /dev/null; then
+        # Pass, aka failed to fail.
+        echo FAIL: $i 1>&2
+        E=1
+    fi
+done
+
+exit $E