Any OpenCL disassembler sumilar to cuobjdump?

I’m looking for a disassembler for NVIDIA OpenCL binary code captured with
clGetProgramInfo(program, CL_PROGRAM_BINARIES, …

It looks like the PTX is in there, at least for the version I’m using, but since the ptx compiler is an optimizing one, it doesn’t give all the truth. Is there something similar to cuobjdump that can take the binary and tell me exactly what is in there? (or can cuobjdump be made to do it?)