I believe that z/OS will fortuitously load a large load module on a page boundary. I also believe that could change without notice. If you need 4KiB alignment, it's safer to declare it.
________________________________________ From: IBM Mainframe Assembler List <ASSEMBLER-LIST@LISTSERV.UGA.EDU> on behalf of Charles Mills <charl...@mcn.org> Sent: Thursday, March 9, 2023 12:17 PM To: ASSEMBLER-LIST@LISTSERV.UGA.EDU Subject: Re: STSI use ? By the way, the ORG STSINFO+4096 does not accomplish what you think it accomplishes -- unless you bind your program with 4K load alignment (is there such a thing? I think there is). Your assembler listing will show SYSIB at address x'1000' which is of course 4K aligned. But let's say that z/OS loads your program at address x'1230068'. Then the actual run-time address of SYSIB will be x'1231068' -- which is of course NOT 4K aligned. Again, this is just by the way. The GETMAIN gives you 4K-aligned storage *in* SYSIB, and that is your solution as you know. Charles -----Original Message----- From: IBM Mainframe Assembler List [mailto:ASSEMBLER-LIST@LISTSERV.UGA.EDU] On Behalf Of Guillaume Boesel Sent: Wednesday, March 8, 2023 9:49 AM To: ASSEMBLER-LIST@LISTSERV.UGA.EDU Subject: Re: STSI use ? Hi Charles and Seymour, you are right L R4,SYSIB STSI 0(R4) solves my problem and right again, ORG STSIINFO+4096 is superfluous. Thank you very much !
