AL4, Shirley. IBM used a similar trick with pseudo-register references way back
when.
--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3
From: IBM Mainframe Assembler List [ASSEMBLER-LIST@LISTSERV.UGA.EDU] on behalf
of Tom Harper
Here is how I code a similar instruction:
CNOP 2,4
LLILF R14,0
ORG *-4
DC A(symbol+X’8000’)
BASSM R14,R15
So that the second operand can be an ADCON or VCON.
You could do the same with LRL.
Sent from my iPhone
> On May 4, 2021, at 9:18 AM, Peter
Tony H asked about a use case for LRL:
one obvious one is a non-reentrant module.
Or, as Shmuel mentioned, it might have been needed for cases where there
is no binder support for fullword immediate relocatable expressions.
As to the OP's actual question, there are limited choices that come to
Right... but for the CL, you want F-word alignment anyway, although it
would only cause a trivial warning if it wasn't.
As for the "oh-so-clever" remark, it only meant reusing an adcon as the
branch target... it's a very minor point; I'd just prefer something like B
*+1 or EX Rx,* that more
I've done both single macros with lists and separae prolog/item/epilog macros
and and haven't seen much of a difference. IMHO, either is preferable to AREAD.
I tend to use LOCTR, immediate operands or literals rather than jumping around
constants.
--
Shmuel (Seymour J.) Metz
Ah, OK. If I re-coded this, there would be separate macros for each
entry. A final end-of-table macro would set an EQU to the length needed to
generate the code. The macros could easily be the same macro source, with
a type operand. But overall, I think it's simpler and clearer than to pile
The added parameter is in place of the AREAD.
--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3
From: IBM Mainframe Assembler List [ASSEMBLER-LIST@LISTSERV.UGA.EDU] on behalf
of Steve Smith [sasd...@gmail.com]
Sent: Monday, May 3, 2021 6:32 PM
CLFI? LOCTR?
--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3
From: IBM Mainframe Assembler List [ASSEMBLER-LIST@LISTSERV.UGA.EDU] on behalf
of Jon Perryman [jperr...@pacbell.net]
Sent: Monday, May 3, 2021 11:53 PM
To:
