The .FPO directive controls the emission of debug records to the .debug$F segment or section.
FPO (cdwLocals, cdwParams, cbProlog, cbRegs, fUseBP, cbFrame)
Number of local variables, an unsigned 32 bit value.
Size of the parameters in DWORDS, an unsigned 16 bit value.
Number of bytes in the function prolog code, an unsigned 8 bit value.
Number registers saved.
Indicates whether the EBP register has been allocated. either 0 or 1.
Indicates the frame type. See FPO_DATA for more information.