//JOBNAME JOB (ACCT),NAME,CLASS=A,MSGCLASS=A,MSGLEVEL=(1,1) //********************************************************************* //ASMCG PROC AOPT=,APARM=,LOPT=, // MAC1='SYS1.MACLIB', // MAC2='SYS1.MACLIB', // MAC3='SYS1.MODGEN' //ASM EXEC PGM=ASMA90, // PARM=('OBJ,NODECK,LC(32767),XREF(SHORT),TERM,RLD,ASA,&AOPT', // 'US(MAP,WARN(11)),SYSPARM(&APARM)') //SYSPRINT DD SYSOUT=* //SYSTERM DD SYSOUT=* //SYSLIB DD DISP=SHR,DSN=&MAC1 // DD DISP=SHR,DSN=&MAC2 // DD DISP=SHR,DSN=&MAC3 //SYSUT1 DD UNIT=SYSALLDA,SPACE=(TRK,(80,20)) //SYSLIN DD DISP=(,PASS),UNIT=SYSALLDA,SPACE=(TRK,(30,15),RLSE), // DCB=(RECFM=FB,BLKSIZE=0,LRECL=80) //GO EXEC PGM=LOADER,COND=(5,LT,ASM), // PARM=('LIST,LET,MAP,XREF,&LOPT') //SYSLOUT DD DUMMY //SYSLIN DD DSN=*.ASM.SYSLIN,DISP=(OLD,DELETE) //SNAPDUMP DD SYSOUT=* // PEND //********************************************************************* //STEP1 EXEC ASMCG //GO.SYSUT1 DD DISP=SHR,DSN=&SYSUID..SAMPKSD2 //ASM.SYSIN DD * *=====================================================================* * MVS STANDARD HOUSE KEEPING PROCEDURE * *=====================================================================* * *----------------------------------* * * ENTRY PROCESSING * * *----------------------------------* MYASMPGM CSECT , DEFINE CONTROL SECTION MYASMPGM AMODE 31 DEFINE DEFAULT AMODE=31 MYASMPGM RMODE 24 DEFINE DEFAULT RMODE=24 USING *,12 DEFINE BASE REGISTER SAVE (14,12),,* SAVE CALLER REGISTERS LA 12,0(,15) GR12 --> OUR 1ST BASE ADDRESS LR 15,13 SAVE CALLER SAVEAREA CNOP 0,4 INSURE FULL WORD BOUNDARY BAS 13,*+4+72 AROUND OUR SAVEAREA DC 18F'-1' OUR GPR SAVEAREA ST 15,4(,13) SAVE CALLER SAVEAREA POINTER ST 13,8(,15) SET BACK CHAIN FOR LINK TRACE B MAINPROC DO MAINLINE PROCESSING * *----------------------------------* * * EXIT PROCESSING * * *----------------------------------* EXITPROC DS 0H L 13,4(,13) RESTORE CALLER SAVEAREA ST 15,16(,13) PASS RETURN CODE TO CALLER RETURN (14,12),T RESTORE CALLER REGISTERS + AND RETURN TO CALLER EJECT , *********************************************************************** * MAIN LINE PROCESSING. * * ===================================================== * * GR1 -- EXEC PARAMETER PLIST * * GR12 - BASE REGISTER * * GR13 - OUR REGISTER SAVEAREA * *---------------------------------------------------------------------* * SAMPLE CODE OF 'MVS ADVANCED SKILL Vol-2' CHAPTER 5.4 * * ===================================================== * * READ INDEX RECORD FROM MVS VSAM/KSDS DATASET. * *---------------------------------------------------------------------* * CHANGE SYSUT1 DSNAME FOR YOUR ENVIRONMENT. * * //GO EXEC PGM=LOADER,COND=(5,LT,ASM), * * //SYSUT1 DD DISP=SHR,DSN=&SYSUID..SAMPKSD2 <=== * *********************************************************************** MAINPROC DS 0H * *----------------------------------* * * SETUP INDEX DUMP PROCESSING * * *----------------------------------* OPEN (UT1ACB) OPEN KSDS DATASET SHOWCB ACB=UT1ACB, EXTRACT INDEX CISIZE + OBJECT=INDEX, + AREA=DOUBLE,LENGTH=8,FIELDS=(CINV,NLOGR) SPACE , L R3,DOUBLE GR3 --> RECORD AREA LENGTH(CISZ L R5,DOUBLE+4 GR5 --> NUM OF INDEX RECORDS GETMAIN RU,LV=(3),BNDRY=PAGE OBTAIN INDEX RECORD READ AREA LR R2,R1 GR2 --> RECORD AREA MODCB RPL=UT1RPL, SET RECORD AREA ADDRESS AND + AREA=(2),AREALEN=(*,DOUBLE) LENGTH INTO RPL OPEN (SNAPDCB,OUTPUT) OPEN SNAPDUMP DATASET SPACE , * *----------------------------------* * * DUMP INDEX RECORD CONTENT * * *----------------------------------* SLR R0,R0 INIT NEXT RBA SR R0,R3 I ST R0,RBA V LOOP DS 0H L R0,RBA LOAD PREVIOUS RBA AR R0,R3 SET NEXT RBA ST R0,RBA STORE IT TO ISSUE GETIX GETIX RPL=UT1RPL READ NEXT INDEX RECORD LA R4,0(R3,R2) LOAD END OF RECORD AREA ADDRESS BCTR R4,0 CORRECT IT SNAP DCB=SNAPDCB, PRINT STORAGE AREA + STORAGE=((2),(4)) BCT R5,LOOP LOOP FOR NEXT INDEX RECORD SPACE , * *----------------------------------* * * END OF INDEX DUMP PROCESSING * * *----------------------------------* CLOSE (SNAPDCB) CLOSE SNAPDUMP DATASET CLOSE (UT1ACB) CLOSE KSDS DATASET SPACE , * *----------------------------------* * * END OF PROCESSING * * *----------------------------------* SLR 15,15 LOAD RETURN CODE = 0 B EXITPROC DO EXIT PROCESSING EJECT , *********************************************************************** * DATA AREA * *********************************************************************** DS 0D *---------------------------------------------------------------------* * *----------------------------------* * * VSAM INTERFACE PARAMETERS * * *----------------------------------* UT1ACB ACB AM=VSAM, ACB FOR SYSUT1 + DDNAME=SYSUT1,MACRF=(IN,CNV) UT1RPL RPL AM=VSAM, RPL FOR SYSUT1 + ACB=UT1ACB, + ARG=RBA, + OPTCD=(CNV,DIR) SPACE , * *----------------------------------* * * WORKING DATA * * *----------------------------------* DOUBLE DC D'0' DOUBLE WORD WORKAREA RBA DC F'0' TARGET INDEX RECORD RBA SPACE , SNAPDCB DCB DDNAME=SNAPDUMP, DCB FOR SNAP DUMP DATASET + DSORG=PS,MACRF=W,RECFM=VBA,BLKSIZE=1632,LRECL=125 *---------------------------------------------------------------------* LTORG , LITERAL POOL AT HERE DROP , FORGET ALL BASE REGISTERS EJECT , *********************************************************************** * DATA AREA (OUTSIDE OUR BASE) * *********************************************************************** *---------------------------------------------------------------------* * LOCAL WORKAREA * *---------------------------------------------------------------------* *---------------------------------------------------------------------* * DSECTS * *---------------------------------------------------------------------* IFGACB AM=VSAM VSAM ACB IFGRPL AM=VSAM VSAM RPL *---------------------------------------------------------------------* * S/370, ESA/390 REGISTER EQUATES * *---------------------------------------------------------------------* YREGS , OS: REGISTER EQUATES RA EQU 10 ADD EQUATION FOR GR10 RB EQU 11 ADD EQUATION FOR GR11 RC EQU 12 ADD EQUATION FOR GR12 RD EQU 13 ADD EQUATION FOR GR13 RE EQU 14 ADD EQUATION FOR GR14 RF EQU 15 ADD EQUATION FOR GR15 END // //