On Mon, May 23, 2022 at 07:16:26PM -0500, madvenka@linux.microsoft.com wrote:
> From: "Madhavan T. Venkataraman" <madvenka@linux.microsoft.com>
> 
> Implement a built-in command called cmd_fpv() that can be invoked as
> follows:
> 
> 	objtool fpv generate file.o
> 
> The built-in command invokes decode_instructions() to walk each function
> and decode the instructions of the function.

In commit b51277eb9775ce91 ("objtool: Ditch subcommands") Josh removed
subcommands so this interface is going to need a rethink.