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+Stack Overflow Detection
+
+       Mono supports converting a stack overflow into a
+       StackOverflowException that the user can use to 
+       pinpoint problems in his software.
+
+       The detection works by:
+
+             * Setting up a number of guard pages below a certain
+             point in the thread stack and unprotect them if we get a
+             segv there.
+
+             * If a segv is caught on those pages, control is
+                transfered to the standard exception handling code.
+
+             * During the unwinding, the stack pages are protected
+               again.