On Mon, 25 Nov 1996 11:14:09 -0500 
 Ian Lance Taylor <ian@cygnus.com> wrote:

 > As far as I can see, it is not necessary to check the dynamic
 > interpreter in the kernel.  Instead, the dynamic interpreter for a
 > particular OS emulation can use a different library search path, and
 > use a library which is correct for the system being emulated.  If
 > necessary, a special kernel call can be used to set the emulation mode
 > of the process.

Yah, this is how Linux does it... However, that assumes that the 
special call's syscall number will be what the special call expects,
which may not always be the case.

Jason R. Thorpe                                       thorpej@nas.nasa.gov
NASA Ames Research Center                               Home: 408.866.1912
NAS: M/S 258-6                                          Work: 415.604.0935
Moffett Field, CA 94035                                Pager: 415.428.6939