Joined: 27 Oct 2015 Posts: 33 Location: United States
I'm developing a simple REXX script queuing TSO TEST commands followed by
TEST <ALC module> LOAD
The queued commands are "AT +xxx" breakpoints (listpsw; GO)
I would like to add EXEC to a breakpoint to call a separate script to evaluate the psw data. I need to check the condition code and write depending on the CC value.
Joined: 30 Nov 2013 Posts: 917 Location: The Universe
I wouldn't bet you could run the TSO EXEC command at a TSO TEST breakpoint. If you can, you can trap LISTPSW output and extract the condition code from that.
Code:
PSW LOCATED AT 9C6108
XRXXXTIE KEY XMWP AS CC PROGMASK EA BA INSTR ADDR
00000111 8 1101 00 00 0000 0 0 0002AFFA
Joined: 30 Nov 2013 Posts: 917 Location: The Universe
Well, by accident, I discovered you can issue an EX (EXEC) command in TSO TEST, though I cannot say if you can retrieve data from an OUTTRAP. I cannot think of any way you can distinguish between messages from TEST or trapped messages from your program.
Here is where Rexx might work better than CLIST. A Rexx EXEC could - in theory - run the RB chain, find "your" RB, though how it could reliably determine which RB is "your" RB, and retrieve the condition code from the PSW in "your" RB. Just a thought; one way to deduce if it found "your" RB is to look at the interrupt code in the RB. If it's the interrupt code is for the SVC instruction TEST uses to force the trap for AT, you've found "your" RB. I cannot guess if that would work. Well, good luck and let us know what you have found.
I had a similar challenge when I wanted to pass the absolute address of the current instruction to the TSO TEST LIST subcommand. I did not want to use "LIST +0 I" because I wanted the absolute address in the output as well. So, I had to parse the LISTPSW output to get the current address and then pass it to LIST. I solved it with nested CLISTs.
The JCL runs a TSO TEST script that executes a CLIST called STEP at each breakpoint.
Code:
BROWSE ZMONEY.JCL(TEST) - 01.92 Line 0000000000 Col 001 080
Command ===> Scroll ===> PAGE
********************************* Top of Data **********************************
//ZMONEYT JOB (AO13ICC0),'TEST',
// CLASS=C,MSGCLASS=X,COND=(4,LT),
// MSGLEVEL=(1,1),REGION=0M,NOTIFY=ZMONEY,
// TIME=1440,LINES=(999999,WARNING),
// USER=ZMONEY
//**********************************************************************
//STD1 OUTPUT CLASS=X
//**********************************************************************
//STEP010 EXEC PGM=IKJEFT01,DYNAMNBR=20
//SYSTSPRT DD SYSOUT=(,),OUTPUT=(*.STD1)
//SYSTSIN DD *
TEST 'ZMONEY.PLI.LOAD(LAB)'
WHERE
AT +40:+B0 (EX STEP)
AT +60:+B0 (EX STEP)
GO
******************************** Bottom of Data ********************************
The STEP CLIST parses the LISTPSW output and executes a CLIST called LI, passing it the address in the PSW.
Code:
BROWSE ZMONEY.STEP.CLIST Line 0000000000 Col 001 080
Command ===> Scroll ===> PAGE
********************************* Top of Data **********************************
SET &SYSOUTTRAP = 3
LISTPSW
WRITE &SYSOUTLINE1
WRITE &SYSOUTLINE2
WRITE &SYSOUTLINE3
WRITE
SET &SYSOUTTRAP = 0
/* PARSE THE ADDRESS IN PSW AND PASS TO LI
EX LI '&SUBSTR(50:58,&SYSOUTLINE3)' LIST
WRITE
LIST 0R:15R
WRITE
GO
******************************** Bottom of Data ********************************
The LI CLIST passes the address to the TSO TEST LIST subcommand.
Code:
BROWSE ZMONEY.LI.CLIST Line 0000000000 Col 001 080
Command ===> Scroll ===> PAGE
********************************* Top of Data **********************************
PROC 1 ADDR
LIST &ADDR.. I
******************************** Bottom of Data ********************************
I get absolute addresses in the output.
Code:
SDSF OUTPUT DISPLAY ZMONEYT J0051142 DSID 102 LINE 0 COLUMNS 02- 81
MODE DATA
COMMAND INPUT ===> SCROLL ===> PAGE
********************************* TOP OF DATA **********************************
READY
TEST 'ZMONEY.PLI.LOAD(LAB)'
TEST
WHERE
24A01EF0. LOCATED AT +0 IN LAB .CEESTART UNDER TCB LOCATED AT 8A44C8.
TEST
AT +40:+B0 (EX STEP)
IKJ57305I NO BREAKPOINTS ESTABLISHED FROM+ 04 OF RANGE BEGINNING +40 +
IKJ57305I INVALID OP CODE
TEST
AT +60:+B0 (EX STEP)
IKJ57305I NO BREAKPOINTS ESTABLISHED FROM+ 4A OF RANGE BEGINNING +60 +
IKJ57305I INVALID OP CODE
TEST
GO
IKJ57024I AT +40
IKJ57652I PSW LOCATED AT 8A46E0
XRXXXTIE KEY XMWP AS CC PROGMASK EA BA INSTR ADDR
00000111 8 1101 00 00 0110 0 1 24A01E18
LIST 24A01E18. I
24A01E18. BC 15,36(,R15) 00000000
IKJ57023I PROGRAM UNDER TEST HAS TERMINATED NORMALLY+
IKJ57023I BREAKPOINTS SET ARE STILL VALID
TEST
END
******************************** BOTTOM OF DATA ********************************
This is the PL/I source of the load module.
Code:
BROWSE ZMONEY.PLI(LAB) - 01.05 Line 0000000000 Col 001 080
Command ===> Scroll ===> PAGE
********************************* Top of Data **********************************
HELLO: PROCEDURE OPTIONS (MAIN); 00010003
DCL ABCDEFG PTR; 00020005
ABCDEFG = ADDR(ABCDEFG); 00021005
END; 00030003
******************************** Bottom of Data ********************************
This is the JCL I used to compile/link it.
Code:
BROWSE U2D4705.JCL(PLITEST) - 01.47 Line 0000000000 Col 001 080
Command ===> Scroll ===> PAGE
********************************* Top of Data **********************************
//ZMONEYP JOB (AO13ICC0),'ZMONEYP',
// CLASS=C,MSGCLASS=X,
// COND=(4,LT),
// NOTIFY=ZMONEY,MSGLEVEL=(1,1),REGION=0M,
// TIME=1440,LINES=(999999,WARNING)
//**********************************************************************
// SET MEM=LAB SOURCE NAME
// SET PGM=LAB LOAD MODULE NAME
// SET PLICOMP='SYS1.VAPLI.V3R5.SIBMZCMP' PLI COMPILER LOADLIB
// SET DTLIB='EQAW.SEQAMOD' DEBUG TOOL LOADLIB
// SET LEHLQ='SYS1' LE HIGH LVL QUALIFIER
// SET UNITDEV=SYSDA UNIT FOR TEMP FILES
//**********************************************************************
//COMPILE EXEC PGM=IBMZPLI,REGION=0M,
// PARM=('+DD:OPTIONS')
//OPTIONS DD *
MAP,OBJECT,LIST
/*
//SYSUT1 DD SPACE=(CYL,(5,2),,CONTIG),DCB=BLKSIZE=1024,UNIT=&UNITDEV
//SYSPRINT DD SYSOUT=*
//STEPLIB DD DSN=&PLICOMP,DISP=SHR
// DD DSN=&LEHLQ..SCEERUN,DISP=SHR
//SYSLIB DD DISP=SHR,DSN=ZMONEY.PLINCL
//SYSIN DD DSN=ZMONEY.PLI(&MEM),DISP=SHR
//SYSLIN DD DSN=ZMONEY.PLI.OBJ(&MEM),DISP=SHR
//**********************************************************************
//LINK EXEC PGM=HEWL,PARM='XREF,LET,LIST,CALL',REGION=2M
//SYSUT1 DD DSN=&&SYSUT1,SPACE=(1024,(120,120),,,ROUND),
// UNIT=SYSDA,DCB=BUFNO=1
//SYSPRINT DD SYSOUT=*
//SYSLIN DD DSN=ZMONEY.PLI.OBJ(&MEM),DISP=(OLD,KEEP)
//SYSLIB DD DSN=SYS1.SCEELKED,DISP=SHR
//SYSLMOD DD DSN=ZMONEY.PLI.LOAD(&MEM),DISP=SHR
//
******************************** Bottom of Data ********************************
