From: cross@spitfire.i.gajendra.net   
      
   In article <10du7p7$38rht$1@dont-email.me>,   
   Arne Vajhøj   wrote:   
   >On 10/29/2025 7:16 PM, Chris Townley wrote:   
   >> On 29/10/2025 23:03, Arne Vajhøj wrote:   
   >>> On 10/29/2025 11:19 AM, Chris Townley wrote:   
   >>>> On 29/10/2025 14:48, gcalliet wrote:   
   >>>>> We have got VMS/XDE (https://products.vmssoftware.com/vms-xde-beta).   
   >>>>> You can develop VMS application on GNU/Linux.   
   >>>   
   >>>> I am interested, if only to see how it works, so will give the beta a   
   >>>> try. Shame it doesn't support aarch64 - I did think of running it on   
   >>>> a modern Pi!   
   >>>   
   >>> I think given the architecture that would require VMS ARM64, which   
   >>> does not exist. Yet.   
   >>   
   >> Yep I realised that, but misread the first bit of PR - mea culpa   
   >   
   >That PR text is rather information free.   
   >   
   >But Aleksandr has explained a little about how it works.   
      
   I wonder how they implement system calls.   
      
   I imagine this is mostly done with shared libraries; those bits   
   that require access to the privileged instruction set are just   
   "normal" functions that set a bit somewhere and do a jump, as   
   opposed to a "SYSCALL" instruction or similar.  For VMS this is   
   actually reasonable, but I'm mildly surprised that they haven't   
   done something like Dune or gVisor.   
      
   	- Dan C.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)