> (Do CCWs still require doubleword alignment? PSWs? STCK? CDS?) Yes.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf of Paul Gilmartin [0000000433f07816-dmarc-requ...@listserv.ua.edu] Sent: Saturday, July 4, 2020 6:25 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Assembler question On Sat, 4 Jul 2020 22:34:47 +0100, Rupert Reynolds wrote: >The question on my mind is "What did you want to achieve?" > >If you wanted an aligned fullword for OW0007AC then you need to decide >whether to align REPORT07 2 bytes after a fullword boundary (precede it >with CNOP 2,4 from memory) or whether you want slack bytes in the record. > >Back in the olde daze, (not sure whether it is still true), loading a >register from an address not aligned would cause an abend, or poor >performance. > Perhaps still performance; mostly not ABEND. (Do CCWs still require doubleword alignment? PSWs? STCK? CDS?) If you have control of the placement, use the strategy automatic for literals: place the larger objects earlier. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
