Quotepdbex is a utility for reconstructing structures and unions from the PDB into compilable C headers
Came across this, could be useful for someone, or for part of a toolset to autogen specific structs, then output and convert to asm style perhaps. Or perhaps source code could be adapted to directly convert.
https://github.com/wbenny/pdbex (https://github.com/wbenny/pdbex)