On Mon, 7 May 2018 11:02:28 -0400, Don Poitras <sas...@sas.com> 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. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
