callW                   macro   _xxx
                        extrn   _xxx:proc
                        call    _xxx
                        endm

                        p386
                        model   flat
                        locals  __
                        jumps

                        .data

atom                    db      'MistFallC',0

                        .code
start:
                        push    offset atom
                        callW   GlobalFindAtomA
                        xchg    ebx, eax

                        or      ebx, ebx
                        jz      __exit

__retry:                push    ebx
                        callW   GlobalDeleteAtom

                        or      eax, eax
                        jz      __retry

__exit:                 push    -1
                        callW   ExitProcess

                        end     start