BPX4MUN (munmap) example

The following code causes a mapped area to be unmapped. For the callable service, see munmap (BPX1MUN, BPX4MUN)— Unmap previously mapped addresses. AMODE 31 callers use BPX1MUN (munmap) example.

                                              
         CALL  BPX4MUN,              unmap previously mapped addresses +
               (MAP_ADDRESS,         Input: address of mapped area     +
               MAP_LENGTH,           Input: area length                +
               RETVAL,               Return value: 0 or -1             +
               RETCODE,              Return code                       +
               RSNCODE),             Reason code                       +
               MF=(E,PLIST)          ----------------------------------