On 6/29/23 13:31:11, Seymour J Metz wrote:
... I don't understand why division by zero is valuable and not an error.
IIRC, it provides a (too) clever way of generating a boolean at
assembly (not conditional) time:
(X-Y)/(X-Y) is one iff X<>Y.
--
gil
Assembler List [ASSEMBLER-LIST@LISTSERV.UGA.EDU] on behalf
of Paul Gilmartin [0014e0e4a59b-dmarc-requ...@listserv.uga.edu]
Sent: Thursday, June 29, 2023 3:19 PM
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Subject: Re: HLASM religious texts, was Variable symbol without leading &
On 6/29/23 11:1
On 6/29/23 11:17:06, Seymour J Metz wrote:
It looks like it supports expressions but not USING.
Does it support division by 0? The mavens hereabouts have told me
that is a valuable feature of HLASM when I'd rather see it treated
as an error.
I can think of exactly one good reason for not
One page that describes that index and base registers are exchanged in GAS reminds me to a
suggestion I have made for HLASM.
No, not to do the same, but issue a warning when you have
rxinst ra,offset(ra)
instead of
rxinst ra,offset(,ra)
IBM's Mühlen mahlen langsam :-) Langsam
Ref: Your note of Thu, 29 Jun 2023 08:57:50 -0700
The GNU assembler as used for Linux on IBM Z uses a similar
"raw" format for instructions to that shown in Principles of
Operation, although with some differences. There is more
information about it here, comparing with HLASM:
RV.UGA.EDU]
On Behalf Of Seymour J Metz
Sent: Thursday, June 29, 2023 8:35 AM
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Subject: Re: HLASM religious texts, was Variable symbol without leading &
Yes, you need PoOps to determine what format each instruction has, but the
actual syntax of each field is d
AM
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Subject: Re: HLASM religious texts, was Variable symbol without leading &
The PoOp manual has always gone beyond the hardware definitions of machine
language instructions to provide the symbolic format in HLASM (and its
predecessors) of each machine lang
The PoOp manual has always gone beyond the hardware definitions of machine
language instructions to provide the symbolic format in HLASM (and its
predecessors) of each machine language instruction, e.g., MVC D1(L,B1),D2(B2).
There could be many other zSeries assemblers (I don't know of any) that
Assembler List on behalf
of Jon Perryman
Sent: Wednesday, June 28, 2023 10:06 PM
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Subject: Re: Variable symbol without leading &
Addressability is only documented in the POPS (and the addressability
publication). Not HLASM. Show us the page in the H
;Behalf Of Abe Kornelis
>Sent: Wednesday, June 28, 2023 10:38 AM
>To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
>Subject: Re: Variable symbol without leading &
>
>Jon,
>
>I've heard others make that remark before: HLASM is actually two languages.
>I find the distinction rather arb
I agree with you Phil about C macro language being abysmal. The only thing
worse is Google's GO language which does not have macros. HLASM macro language
should have been replaced years ago with REXX but as it stands, it's still
extremely useful. Imagine coding a complex DCB in C or worse yet
ROTF,LMAO
From: IBM Mainframe Assembler List on behalf
of Jon Perryman
Sent: Wednesday, June 28, 2023 10:06 PM
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Subject: Re: Variable symbol without leading &
Addressability is only documented in the
.
From: IBM Mainframe Assembler List on behalf
of Jon Perryman
Sent: Wednesday, June 28, 2023 7:09 PM
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Subject: Re: Variable symbol without leading &
Assembler instruction syntax is not described in the HLASM reference. You are
descri
Beyond all the fighting here, just be glad the assembler macro language is so
powerful. Every time I have to do something in C that call out for a macro, I'm
appalled at how pathetic that language is!
From: IBM Mainframe Assembler List on behalf
of Jon Perryman
Sent: Wednesday, June 28, 2023 7:09 PM
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Subject: Re: Variable symbol without leading &
Assembler instruction syntax is not described in the HLASM reference. You are
describing various methods f
4 PM
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Subject: Re: Variable symbol without leading &
Seymour, you said that POPS does not explain how to symbolically encode
instructions. What other manual tells you how to code instructions? Tell us
where the MVC instruction is documented outside of the POPS
@LISTSERV.UGA.EDU
Subject: Re: Variable symbol without leading &
Seymour, you said that POPS does not explain how to symbolically encode
instructions. What other manual tells you how to code instructions? Tell us
where the MVC instruction is documented outside of the POPS? I used
.
From: IBM Mainframe Assembler List on behalf
of Jon Perryman
Sent: Wednesday, June 28, 2023 5:44 PM
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Subject: Re: Variable symbol without leading &
Seymour, you said that POPS does not explain how to symbolically en
the layout of the data, not the DCs needed to generate
them.
From: IBM Mainframe Assembler List on behalf
of Jon Perryman
Sent: Wednesday, June 28, 2023 5:11 PM
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Subject: Re: Variable symbol without leading &
If the POPS
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Subject: Re: Variable symbol without leading &
If the POPS does not explain how to symbolically code each instruction, then
point us to the manual that does. For instance, what manual tells me how to
code the PLO instruction with multiple syntax variat
.
From: IBM Mainframe Assembler List on behalf
of Charles Mills
Sent: Wednesday, June 28, 2023 2:03 PM
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Subject: Re: Variable symbol without leading &
The "other manual" for the Assembler is Principles of Oper
ct: Re: Variable symbol without leading &
On 6/28/23 12:23:03, Seymour J Metz wrote:
> Then it's a good thing that "exclusively" came from you, not from me. For
> your information, I *have* encountered people who write HLASM for a living
> and have no idea how the inst
On 6/28/23 12:23:03, Seymour J Metz wrote:
Then it's a good thing that "exclusively" came from you, not from me. For your
information, I *have* encountered people who write HLASM for a living and have no idea
how the instructions are actually encoded.
... and they ask how they can eliminate
on behalf
of Charles Mills
Sent: Wednesday, June 28, 2023 2:18 PM
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Subject: Re: Variable symbol without leading &
If you met someone who said he wrote Z assembler for a living, you would not
think that he exclusively dealt in USING and SPACE and LCLC. You w
Sent: Wednesday, June 28, 2023 2:03 PM
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Subject: Re: Variable symbol without leading &
The "other manual" for the Assembler is Principles of Operation.
If you want to know how COBOL MOVE works, you look at the COBOL Language
Reference.
But if you wa
-
From: IBM Mainframe Assembler List [mailto:ASSEMBLER-LIST@LISTSERV.UGA.EDU] On
Behalf Of Abe Kornelis
Sent: Wednesday, June 28, 2023 10:38 AM
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Subject: Re: Variable symbol without leading &
Jon,
I've heard others make that remark before: HLASM i
ing.
>
>
> From: IBM Mainframe Assembler List on
> behalf of Joseph Reichman
> Sent: Wednesday, June 28, 2023 10:09 AM
> To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
> Subject: Variable symbol without leading &
>
> Hi
> Just lo
-LIST@LISTSERV.UGA.EDU
Subject: Re: Variable symbol without leading &
Assembler language and Assembler Macro language are 2 separate languages &
manuals. Both have variables and symbols but they are very different in
concept. In Assembler, symbols have a diverse use, one of which is variabl
warning.
From: IBM Mainframe Assembler List on behalf
of Joseph Reichman
Sent: Wednesday, June 28, 2023 10:09 AM
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Subject: Variable symbol without leading &
Hi
Just looked at the doc for LCLC says for variable symbol says can be with
Gil, all,
You suggest that a declaration for a variable with a leading ampersand
should have the variable name evaluated before it is actually declared.
Not only would that break most existing code (I do not recall ever having
seen a variable declaration without a leading ampersand), it would
On 6/28/23 08:17:20, Dave Clark wrote:
"IBM Mainframe Assembler List" wrote on
06/28/2023 10:09:27 AM:
Just looked at the doc for LCLC says for variable symbol says can be
with or with out leading &
However when I tried to do a SETC against it I got a assembly error
I believe that
er to accept it but issue a
> warning.
>
>
> From: IBM Mainframe Assembler List on
> behalf of Joseph Reichman
> Sent: Wednesday, June 28, 2023 10:09 AM
> To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
> Subject: Variable symbol without leadin
10:09 AM
To: ASSEMBLER-LIST@LISTSERV.UGA.EDU
Subject: Variable symbol without leading &
Hi
Just looked at the doc for LCLC says for variable symbol says can be with or
with out leading &
I did try to assemble a symbol without leading & and it did a assemble however
I would t
"IBM Mainframe Assembler List" wrote on
06/28/2023 10:09:27 AM:
> Just looked at the doc for LCLC says for variable symbol says can be
> with or with out leading &
>
> However when I tried to do a SETC against it I got a assembly error
I believe that it means LCLC does not require
Hi
Just looked at the doc for LCLC says for variable symbol says can be with or
with out leading &
I did try to assemble a symbol without leading & and it did a assemble however
I would think without the leading & it’s an ordinary symbol
However when I tried to do a SETC against it I got a
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