site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com Cheers, Mo. -- mo mcroberts :: mo@nevali.net :: http://nevali.net _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.appl... One of the more interesting features of many versions of Mach was the support for per-task system call emulation vectors, allowing a server to execute child processes and deal with system calls rather more elegantly than some sort of debugging trap-style hack. Originally, I thought that system call emulation had died as part of the OSF Mach development, but poking through the MkLinux sources suggests that code was specifically removed from XNU by Apple (or, presumably, NeXT). This is a bit of long shot, but does anybody have any ideas what happened to the code (other than “it was taken out”, obviously), or if there was a particular reason for its removal? After all, it doesn't take much of a genius to see what the possibilities would be if system call emulation was still present and functional in current releases of XNU! This email sent to site_archiver@lists.apple.com