From b163c8eb0370735881d79d20faa4446cc9a782a6 Mon Sep 17 00:00:00 2001
From: Volodymyr Shymanskyy <vshymanskyi@gmail.com>
Date: Mon, 7 Oct 2019 22:52:36 +0300
Subject: [PATCH] Add disasm-func.sh

---
 test/disasm-func.sh | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100755 test/disasm-func.sh

diff --git a/test/disasm-func.sh b/test/disasm-func.sh
new file mode 100755
index 0000000..188f3ff
--- /dev/null
+++ b/test/disasm-func.sh
@@ -0,0 +1,17 @@
+#
+# Utility to disassemble a specific function.
+# Usage:
+# ./disasm-func.sh ../build/wasm3 i32_Divide_sr
+#
+
+FILE="$1"
+FUNC="$2"
+
+# get starting address and size of function fact from nm
+ADDR=$(nm --print-size --radix=d $FILE | grep $FUNC | cut -d ' ' -f 1,2)
+# strip leading 0's to avoid being interpreted by objdump as octal addresses
+STARTADDR=$(echo $ADDR | cut -d ' ' -f 1 | sed 's/^0*\(.\)/\1/')
+SIZE=$(echo $ADDR | cut -d ' ' -f 2 | sed 's/^0*//')
+STOPADDR=$(( $STARTADDR + $SIZE ))
+
+objdump --disassemble $FILE --start-address=$STARTADDR --stop-address=$STOPADDR -M suffix