Re: Stack Bases

We use "stack base" uniformly to mean "the address to load into the stack
pointer for an empty stack" which may be inclusive or exclusive (above, below,
or within) the memory allocated to the stack itself. Keep in mind there are
different implementations of stacks on different processors. The primary
differences are:

1) Byte order within each cell
2) Direction the stack grows in memory
3) Nature of the push and pop operators (pre- and post- increment and decrement)
4) What the stack pointer references

> -----Original Message-----
> From: swiftx-bounce_at_forth.com [mailto:swiftx-bounce_at_forth.com]On Behalf
> Of Bulgrien, Dennis
> Sent: Friday, April 12, 2002 1:48 PM
> To: swiftx_at_forth.com
> Subject: [swiftx] Stack Bases
>
>
>
> Our use of the term "base" is interesting. I believe that references to
> ['S0 S0 'R0 R0 'N0 N0], which we call the "base" of the target parameter,
> return, and numeric stacks, are to the cell *above* the highest
> (address-wise) usable cell of the respective stack (since a push
> predecrements) rather than to that cell. Bases of other data structures
> (vector tables, register maps, etc) are the address *of* the lowest usable
> cell.
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Received on Fri Apr 12 2002 - 14:17:38 PDT