NetInverse Developers Blog

SOS Command: !DumpIL

        <Managed DynamicMethod object> |
        <DynamicMethodDesc pointer> |
        <MethodDesc pointer>

!DumpIL prints the IL code associated with a managed method. We added this function specifically to debug DynamicMethod code which was constructed on the fly. Happily it works for non-dynamic code as well.

You can use it in three ways:

1. If you have a System.Reflection.Emit.DynamicMethod object, just pass the pointer as the first argument.
2. If you have a DynamicMethodDesc pointer you can use that to print the IL associated with the dynamic method.
3. If you have an ordinary MethodDesc, you can see the IL for that as well, just pass it as the first argument.

Note that dynamic IL is constructed a bit differently. Rather than referring to metadata tokens, the IL points to objects in a managed object array. Here is a simple example of the output for a dynamic method:

  0:000> !dumpil b741dc

This is dynamic IL. Exception info is not reported at this time. If a token is unresolved, run “!do <addr>” on the addr given in parenthesis. You can also look at the token table yourself, by running “!DumpArray 00b77388″.

  IL_0000: ldstr 70000002 "Inside invoked method "
  IL_0005: call 6000003 System.Console.WriteLine(System.String)
  IL_000a: ldc.i4.1
  IL_000b: newarr 2000004 "System.Int32"
  IL_0010: stloc.0
  IL_0011: ldloc.0
  IL_0012: ret