On Wed, 19 Sep 2012 01:29:06 +0200, Bernd Oppolzer wrote: > >Another example for the restrictions imposed by the architecture: the parameter >passing mechanisms are also limited, for example, no PL/1 descriptors. This >was >a deliberate design decision in 1980 - the architects then wanted to make sure >that >all modules can call each other, regardless of language, and that a caller >needs not >know the language of the module he or she is calling... > This would seem to pretty much preclude 64-bit exploitation, and even might have caused problems at a 31-bit conversion.
>... The descriptions of the module >interfaces are written in a language independent way (in a data dictionary), >and the >language specific definitions (normally structure definitions in macros or >include files) >are generated from there - for all three languages. > Excellent. And I suspect some of the assembler wizards hereabouts would be able to bypass a generative step and parse the structure definitions directly with an assembler macro. (Would similar work for PL/I? I know it's far beyond the ability of the C preprocessor.) -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
