Paul,
You keep saying 32-bit applications. There is *NO SUCH THING*. There are
only 24-bit, 31-bit and 64-bit applications.
Tony Thigpen
Paul Edwards wrote on 05/07/2018 11:56 AM:
On Mon, 7 May 2018 11:02:28 -0400, Don Poitras <[email protected]> wrote:
All references to "L" to load an address need
to be changed to "LG".
Not necessarily. When we implemented large heap support for SAS/C, we
used a scheme where we could avoid re-writing large parts of the
assembler source by limitting ourselves to 2G "Continents" (a term I
coined). By calling IARV64 and requesting 4G, we are guaranteed that
at least 2G can be addressed via L and ST and so on in AMODE64 as long
as the high half of the 64-bit register has been set.
That's a good idea, and we could get a compiler
to generate such code, but it prevents the
32-bit application from being moved to cheaper
32-bit hardware in the future, as a possibility.
BFN. Paul.
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