Install Resident Service Provider Callback

Protected mode resident service providers (protected mode
TSRs) can provide services to 16-bit DPMI programs, 32-bit
DPMI programs, or both.  A resident service provider uses
this function to request notification from the host whenever
another DPMI program in the same virtual machine is loaded
or terminated.

Call With:

   AX     = 0C00H
   ES:(E)DI= selector:offset of 40-byte buffer with the
           following structure:

           OffsetLengthContents
           00H    8Descriptor for 16-bit data segment
           08H    8Descriptor for 16-bit code segment
           10H    2Offset of 16-bit callback procedure
           12H    2Reserved
           14H    8Descriptor for 32-bit data segment
           1CH    8Descriptor for 32-bit code segment
           24H    4Offset of 32-bit callback procedure

Returns:

   if function successful
   Carry flag= clear

   if function unsuccessful
   Carry flag= set
   AX     = error code
           8021H   invalid value (access rights/type bytes
                   invalid, or offset outside segment
                   limits)
           8025H   invalid linear address (descriptor
                   references a linear address range outside
                   that allowed for DPMI clients)
           8015H   callback unavailable (host unable to
                   allocate resources for resident handler
                   initialization callback)

Notes:

o  A DPMI client that uses this function declares its intent
   to provide resident protected mode services.  The client
   must subsequently terminate and stay resident using Int
   31H Fn 0C01H.  DPMI clients which intend to stay
   resident only to provide services to real mode programs
   should not use this function.
o  The data structure provides room for a data descriptor, a
   code descriptor, and an offset for both 16-bit and 32-bit
   protected modes.  The client can conveniently initialize
   the descriptor fields to valid values by fetching copies
   of  its current code and data descriptors with Int 31H
   Function 000BH.
o  If only one mode is supported by the resident service
   provider, then the code descriptor for the unsupported
   mode should be initialized to zero.
o  This function is called on the locked protected mode
   stack.

o  For further details on programming of resident service
   providers, see page 41.