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Paul van der Eijk · Guest

While writing an interpreter, I have implemented a stack using
VirtualAlloc. The disadvantage of my current implementation is that it
is a post-increment stack. So when I push a string for example the
code looks like:
PShortString(sp)^ := s;
Inc(sp, Length(s));

What I realy want is a pre-increment stack, so I can write:
Dec(sp, Length(s));
PShortString(sp)^ := s;

This leaves the lenth byte on top of the stack.

In the post-increment example I use VirtualAlloc to extend the stack
storage as needed (like left to right). Using the pre-increment stack,
I would need to commit pages right to left. Is there a way of doing
that?

--Paul

PS Posting in this forum because of all the heap management knowledge!