Steve, welcome to MF=L/E land.
Note - the following is really simple, and merely a starting point.
What you really should do, IMHO, in this situation, is in a constant area,
code
#OPEN OPEN (,INPUT),MF=L
#OPEN_L EQU *-#OPEN
Then in your DSECT area, code
@OPEN DS XL(#OPEN_L)
And in your program code
MVC @OPEN,#OPEN
OPEN ((10)),MF=(E,@OPEN)
It's good practice to generate an MF=L list in your constant area so you can
define the MF=E area properly. It's not so important for OPEN, but for
things like ATTACH that have a lot of bits set, it's a lifesaver.
Later,
Ray
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf
Of Steve Comstock
Sent: Friday March 16 2007 13:37
To: [email protected]
Subject: Re: Need help with Assembler accessing VSAM file in reentrant
LE-conforming program
Gerhard Postpischil wrote:
> Steve Comstock wrote:
>
>> Then I issue OPEN against that ACB: I get S0C4 that
>> points to the next instruction after my OPEN, which
>> is an LTR 15,15; so it looks like the abend is being
>> generated in OPEN.
>> open ((10)),mode=31,mf=(e,openlist)
>
>
> To eliminate one more "obvious" possibility - is openlist initialized,
> i.e., is the x'80' end of list bit on?
>
>
> Gerhard Postpischil
Hmmm. Interesting question.
Openlist is defined in my DSECT area:
openlist open 0,mode=31,mf=l
+OPENLIST DC 0F'0'
+ DC AL1(128)
+ DC AL3(0)
+ DC A(0)
So the x'80' bit is on here, but since it's in a DSECT,
of course, no real initialization occurs. The code where
the OPEN is invoked shows on the listing as:
open ((10)),mode=31,mf=(e,openlist)
+ LA 1,OPENLIST
+ ST 10,4(1,0)
+ LR 0,1
+ SR 1,1
+ SVC 19
ltr 15,15
So, no, I would say the x'80' bit is not on at
execution time. But, it is not clear how one
would do that (without manually coding the
macro expansion oneself). The doc does not
include the classic 'vl' operand as an option:
[label] OPEN (address[, [(options)][,...]])[,MODE={24|31}]
Hmmm.... no, not sure what to do about that.
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