You can specify GR's via: R0 EQU 0,8,,,GR
HLASM also supports a bunch of other register types. However when you do this, use of non-register equates (i.e. by CICS macros) gets flagged by the assembler. Robert Ngan -----Original Message----- From: IBM Mainframe Assembler List <ASSEMBLER-LIST@LISTSERV.UGA.EDU> On Behalf Of Seymour J Metz Sent: Thursday, April 30, 2020 11:18 To: ASSEMBLER-LIST@LISTSERV.UGA.EDU Subject: Re: *-* LOCTR is indeed your friend, but sometimes more than one EX has the same target. A clear comment of intent (*not* a translation of the instruction) is appropriate in that situation. -- Shmuel (Seymour J.) Metz https://clicktime.symantec.com/3BuUJhU9JjPxguF2J9ZsRay7Vc?u=http%3A%2F%2Fmason.gmu.edu%2F~smetz3 ________________________________________ From: IBM Mainframe Assembler List [ASSEMBLER-LIST@LISTSERV.UGA.EDU] on behalf of Paul Gilmartin [00000014e0e4a59b-dmarc-requ...@listserv.uga.edu] Sent: Thursday, April 30, 2020 12:09 PM To: ASSEMBLER-LIST@LISTSERV.UGA.EDU Subject: Re: *-* On 2020-04-30, at 08:56:41, Phil Smith III wrote: > > Comments should be included. But consider an EX: > > MVCEX MVC 0(*-*,R2),0(R3) Copy the parameter > > Now, that statement will appear by itself, not inline (unless you use the > "put it inline and jump around it and then do the EX *-10 or whatever it is, > which I've always found ugly), ... LOCTR is the friend of the avant garde. And it respects USING in effect at its appearance in the text. On 2020-04-30, at 06:54:37, Rob van der Heij wrote: > > I ran into some code where the programmer decided to know better and > had defined RA-RF and used that where he made his changes (and have me > scratch my head about something keeping an address as return code). I > did not friend him. > I ran into some code where the programmer used mnemonic register register equates, such as: RPARM EQU 1 .. RRSA EQU 13 RLINK EQU 14 RRC EQU 15 An expert tells me this is a Bad Idea. In CDC 6600 assemblef, registers were identified by unique symbols, not compatible with numeric expressions. I believe this engendered robust coding techniques; 6600 programmers rarely listed macro expansions: "It does what it ought to; I'd print it out only for debugging, just like a subroutine. But no machine instructions relied on even-odd register pairs. Doesn't HLASM have a register symbol type? Could macros rely on this rather than parentheses to indicate registers? -- gil DXC Technology Company - Headquarters: 1775 Tysons Boulevard, Tysons, Virginia 22102, USA. DXC Technology Company -- This message is transmitted to you by or on behalf of DXC Technology Company or one of its affiliates. It is intended exclusively for the addressee. The substance of this message, along with any attachments, may contain proprietary, confidential or privileged information or information that is otherwise legally exempt from disclosure. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient of this message, you are not authorized to read, print, retain, copy or disseminate any part of this message. If you have received this message in error, please destroy and delete all copies and notify the sender by return e-mail. Regardless of content, this e-mail shall not operate to bind DXC Technology Company or any of its affiliates to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose.
