Add disasm-func.sh

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