Where to lookup what IKJEGS6A / SVC 61 does?

[Peter Hunkeler]

Working on some asm code I stumbled on an call to SVC 61. SVC 61 seems to be 
service IKJEGS6A. Neither googling nor searching MVS and TSO manuals helped to 
find what IKJEGS6A does. Can anyone help me with a pointer to some doc?

--
Peter Hunkeler

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Re: Where to lookup what IKJEGS6A / SVC 61 does?

[Vernooij, CP (SPLXM) - KLM]

Ask google what it knows about: svc 61 igc0006a

Kees.
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf 
Of Peter Hunkeler
Sent: Monday, June 23, 2014 11:26
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Where to lookup what IKJEGS6A / SVC 61 does?

Working on some asm code I stumbled on an call to SVC 61. SVC 61 seems to be 
service IKJEGS6A. Neither googling nor searching MVS and TSO manuals helped to 
find what IKJEGS6A does. Can anyone help me with a pointer to some doc?

--
Peter Hunkeler

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Re: Where to lookup what IKJEGS6A / SVC 61 does?

[Lizette Koehler]

I always get curious as to why this type of information is requested.  Is
there some issue you are having that involves this SVC?

Also, this is where I think IBM has eliminated good information over the
years.  Notice the below link is for OS/VS R3.7.  Old but still relevant.

This URL may help
http://bitsavers.trailing-edge.com/pdf/ibm/370/OS_VS2/Release_3.7_1977/GC28-
0708-1_OS_VS2_Debugging_Handbook_Vol_1_Rel_3.7_Nov78.pdf
Or tinyurl: http://tinyurl.com/ptl5eg4

Lizette


> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On
> Behalf Of Peter Hunkeler
> Sent: Monday, June 23, 2014 2:26 AM
> To: IBM-MAIN@LISTSERV.UA.EDU
> Subject: Where to lookup what IKJEGS6A / SVC 61 does?
> 
> Working on some asm code I stumbled on an call to SVC 61. SVC 61 seems to
be
> service IKJEGS6A. Neither googling nor searching MVS and TSO manuals
helped
> to find what IKJEGS6A does. Can anyone help me with a pointer to some doc?
> 
> --
> Peter Hunkeler

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Re: Where to lookup what IKJEGS6A / SVC 61 does?

[Tony Harminc]

On 23 June 2014 05:25, Peter Hunkeler  wrote:
> Working on some asm code I stumbled on an call to SVC 61. SVC 61 seems to be 
> service IKJEGS6A. Neither
> googling nor searching MVS and TSO manuals helped to find what IKJEGS6A does. 
> Can anyone help me with a
> pointer to some doc?

There is a naming scheme for those TSO modules, and all IKJEGxxx ones
are related to TSO TEST.

TEST has two SVCs, and confusingly they are SVC 97 (X'61' ) and SVC 61
(X'3D'). SVC 97 is the TEST breakpoint SVC, though it has some uses
beyond just indicating that a breakpoint has been reached. But I
assume you're talking about SVC decimal 61. This is used by TEST to
obtain information from the SYM records in a load module when the TEST
option was used at assembly time, and the debugging info wasn't
stripped out somewhere along the way. I can't imagine this has been
kept current in modern z/OS, since not only SYM records, but TEST
itself have been deprecated for many years. So for instance, whether
it works with Program Objects in PDSEs or UNIX files, I have no idea,
but my guess is "not very well if at all".

You say that Googling didn't help, but it will surely lead you to
http://mainframe.eu/mvs38/asm/all%20SVC%20modules%20%28IGC%29/IGC0006A
, which explains how it worked in MVS 3.8, and may give some good
clues about how it works now.

Tony H.

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Re: Where to lookup what IKJEGS6A / SVC 61 does?

[Shmuel Metz (Seymour J.)]

In , on 06/23/2014
   at 11:25 AM, Peter Hunkeler  said:

>Working on some asm code I stumbled on an call to SVC 61.

TESTRAN and TSO TEST.

>Neither googling nor searching MVS and TSO manuals helped to find
>what IKJEGS6A does.

It should be in the logic manual for TSO TEST.
 
-- 
 Shmuel (Seymour J.) Metz, SysProg and JOAT
 ISO position; see  
We don't care. We don't have to care, we're Congress.
(S877: The Shut up and Eat Your spam act of 2003)

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AW: Re: Where to lookup what IKJEGS6A / SVC 61 does?

[Peter Hunkeler]

I was looking at some exit sample from a vendor software. The prolog macro 
generated an "SVC 61" (dec) and I was just curious what it was. I found SVC 61 
is related to IKJEGS6A and asked myself what this code had to do with some TSO 
service. Just missed the idea of googling for IGC0006A.

Thanks for the pointers--
Peter Hunkeler



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