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parameter passing example

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moshix
2022-02-17 05:38:58 -06:00
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commit a99b7c7eec
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//HERC01A JOB (BAL),
// 'PARAMETER CALLING ',
// CLASS=A,
// MSGCLASS=X,
// TIME=1440,
// MSGLEVEL=(1,1)
//ASMCLG EXEC ASMFCG,PARM.ASM=(OBJ,NODECK),MAC1='SYS2.MACLIB',
// REGION.GO=428K,PARM.GO='/12345'
//ASM.SYSLIB DD
// DD DISP=SHR,DSN=SYS1.MACLIB
//ASM.SYSIN DD *
PRINT NOGEN
RDPARM CSECT
STM R14,R12,12(R13) SAVE CALLERS REGISTERS
BALR R12,0 COPY BASE REG
USING *,R12 TELL ASSEMBLER BASE REG
ST R13,SAVEAREA+4 SAVE CALLER SAP
LA R13,SAVEAREA POINT TO ORU SAVE AREA
*
L R2,0(,R1) GET PARAM FIELD ADDR
LH R3,0(,R2) GET LENGTH OF PARM FIELD
LA 2,2(,R2) ADDRS OF FIRST BYTE OF FIELD
*
* PRINT ON CONSOLE LEGNTH OF PARAMETER FIELD
CVD R3,NUMDEC FROM BINARY TO DECIMAL
UNPK UNDEC,NUMDEC+1 MAKE HUMAN READABLE
MVC WTOC+20(2),UNDEC COPY WORKLOAD INTO NEXT INST
WTOC WTO 'PARM LENGTH '
*
LR R6,R3 COPY INTO R6
LTR R3,R3 WAS A PARAM SPECIFIED
BZ NOPARM
* SO WE DO HAVE A PARAM
LA R4,WTOL+15 ADDR OF WTO WITH PARMS
MVC 0(R6,R4),0(R2) COPY WORKLOAD INTO NEXT INST
WTOL WTO 'PARMS: '
B CLOSE
NOPARM DS 0H
WTO 'NO PARAMETERS GIVEN BY CALLER'
CLOSE L R13,SAVEAREA+4 RELOAD CALLERS SA
LM R14,R12,12(R13) CALLERS REGS
SR R15,R15 RESET TO RC TO ZERO
BR R14 RETURN TO MAMA
*
LTORG
SAVEAREA DS 18F
NUMDEC DS D
UNDEC DS PL4
* EQUATES
R1 EQU 1
R2 EQU 2
R3 EQU 3
R4 EQU 4
R5 EQU 5
R6 EQU 6
R7 EQU 7
R8 EQU 8
R9 EQU 9
R10 EQU 10
R11 EQU 11
R12 EQU 12
R13 EQU 13
R14 EQU 14
R15 EQU 15
END
/*
//