How do I find out what mode the object file is in?


There are 3 modes an object file on CX/UX can be in.  They are M88100, M88110,
and M88110compat.

To determine which mode the object file is in run the dump command with the
-M and -v options on the object or executable.

        $ dump -Mv svc_kudp.o


                                ***VENDOR***

        svc_kudp.o:

           round mode: IEEE near,   float exceptions: 
           float precision: not 80-bit,   88000 mode: 88110,   text_reloc: 0x00000000
           zero_page: yes,   tcfp: _,_,_              ^^^^^

        $ 

The object file svc_kudp.o is compiled in 88110 mode.


        $ cc -Qtarget=M88110compat a.c 
        $ dump -Mv a.out 

        a.out:

                         **** VENDOR INFORMATION ****
           round mode: IEEE near,   float exceptions: inv dz ofl 
           float precision: not 80-bit,   88000 mode: compat,   text_reloc: 0x00007ed8
           zero_page: no,   tcfp: _,_,_

The executable a.out is compiled in M88110compat mode.


For more information see dump(1). or cc(1).