>What instructions take fixed quadword operas? I imagine some variant of Divide.
Yes, DLG and DLGR operate on 128 bit dividend in 64 bit r1 and r1+1. But since the dividend is in registers, there is no requirement for quad word alignment. Don Higgins d...@higgins.net www.don-higgins.net -----Original Message----- From: IBM Mainframe Assembler List <ASSEMBLER-LIST@LISTSERV.UGA.EDU> On Behalf Of Paul Gilmartin Sent: Monday, April 18, 2022 11:40 AM To: ASSEMBLER-LIST@LISTSERV.UGA.EDU Subject: Re: Quadword constant On Apr 18, 2022, at 09:02:41, Schmitt, Michael wrote: > > HLASM has fixed decimal constants for Halfwords, Fullwords, Doublewords, with appropriate alignment. Why is there none for Quadwords? > > The closest I see is LQ, but that appears to be intended for floating point. > What instructions take fixed quadword operas? I imagine some variant of Divide. But it becomes increasingly absurd that a 64-bit machine is supported by only a 32-bit assembler. -- gil
