We use this COBOL warning 400+lines follow
IDENTIFICATION DIVISION.
PROGRAM-ID. 'JLPFCALL'.
****************************************************************
* JLPFCALL JLP UTILITY REXX FUNCTION
****************************************************************
*
* THIS IS CALLED IN A REXX EXEC IN THE FOLLOWING
* WAY
* JLPFCALL(MODULENAME,N,PARM1,PARM2. . . .)
*
* WHERE MODULENAME IS A DEFINED SUBROUTINE AND N IS THE NUMBER OF
* THE PARM THAT WE WANT TO GO INTO THE RESULT
*
* E.G.
*
* INDATE = "12/12/12"
* JDCONTROL="ESCJDC "
*
* X = JLPFCALL("JDATE",JDCONTROL,INDATE,"")
*
* PUTS THE 80-BYTE JDATE FIELD INTO X
*
* PARAMETERS ARE PADDED TO 250 BYTES ON INPUT. THE RESULT FIELD
* IS PADDED TO 250 BYTES AND THEN HAS TRAILING BLANKS TRUNCATED.
* HOWEVER ITS LENGTH IS NEVER REDUCED TO LESS THAN ITS LENGTH ON
* INPUT
*
****************************************************************
* IT IS NECESSARY TO WRITE THIS IN COBOL BECAUSE THE COBOL DYNAMIC
* CALL IS THE ONLY AVAILABLE INTERFACE WHICH CAN HANDLE ALL
* POSSIBLE TYPES OF MODULE E.G.
* COBOL MODULES (24 AND 31)
* C MODULES (MUST BE 31) - NOT MAIN
* C MODULES (MUST BE 31) - MAIN
* ASS MODULES (24 AND 31) - NON-CONFORMING
* ASS MODULES (24 AND 31) - CONFORMING MAIN
* ASS MODULES (24 AND 31) - CONFORMING NOT MAIN
****************************************************************
*
* WARNING: WE DID ATTEMPT TO PUT THIS IN IRXFLOC, BUT FOUND IT
* NOT WORTH THE TROUBLE. SINCE YOU HAVE TO INITIALISE A LE/370
* ENCLAVE EVERY TIME THE OVERHEAD OF LOADING JLPFCALL IS SMALL
*
****************************************************************
*
* THIS JLPFCALL IS USED ON MVS AND VSE. OTHER ENVIRONMENTS NEED
* THEIR OWN INTERFACES.
*
****************************************************************
****************************************************************
* NOTE FOR USE UNDER OMVS. UNDER OMVS EXTERNAL FUNCTIONS ARE
* LOOKED FOR FIRST BY MVS LOAD. THUS THE "MVS BATCH" VERSION
* ON OPS.LIVE.LOADLIB (SYSTEM LINKLIB) IS USED UNDER OMVS.
****************************************************************
ENVIRONMENT DIVISION.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 W-MAX-EVALBLOCK-EVDATA-LEN PIC S9(8) COMP.
01 W-ARG-COUNT PIC S9(8) COMP.
01 W-ARG-ENTRYS.
04 W-ARG OCCURS 11 INDEXED BY
W-ARG-ENTRY-X.
07 W-ARG-LEN PIC S9(8) COMP.
07 W-ARG-DATA PIC X(500).
01 W-REPLY.
07 W-REPLY-LEN PIC S9(8) COMP.
07 W-REPLY-DATA PIC X(500).
01 W-RESULT PIC X.
LINKAGE SECTION.
01 DUMMY1 PIC X.
01 DUMMY2 PIC X.
01 DUMMY3 PIC X.
01 DUMMY4 PIC X.
01 ARGTABLE.
04 ARGTABLE-ENTRY OCCURS 10 INDEXED BY
ARGTABLE-ENTRY-X.
07 ARGTABLE-ARGSTRING-POINTER USAGE POINTER.
07 ARGTABLE-ARGSTRING-LEN PIC S9(8) COMP.
01 ARGSTRING PIC X(9999).
01 EVALBLOCK-POINTER USAGE POINTER.
01 EVALBLOCK.
02 EVALBLOCK-PREFIX.
04 EVALBLOCK-EVPAD1 PIC S9(8) COMP.
04 EVALBLOCK-EVSIZE PIC S9(8) COMP.
04 EVALBLOCK-EVLEN PIC S9(8) COMP.
04 EVALBLOCK-EVPAD2 PIC S9(8) COMP.
02 EVALBLOCK-REST.
04 EVALBLOCK-EVDATA PIC X(9999).
PROCEDURE DIVISION USING DUMMY1 DUMMY2 DUMMY3 DUMMY4 ARGTABLE
EVALBLOCK-POINTER.
* COUNT ARGUMENT TABLE.
* MUST BE (2+1) AT LEAST, MAY NOT BE > (2+9)
* SET ADRESSABILITY OF EVALBLOCK
* SET MAX ALLOWABLE LENGTH TO SIZE AVAILABLE IN EVDATA
*
SET ADDRESS OF EVALBLOCK
TO EVALBLOCK-POINTER
COMPUTE W-MAX-EVALBLOCK-EVDATA-LEN
= (EVALBLOCK-EVSIZE * 8) - LENGTH OF EVALBLOCK-PREFIX
IF W-MAX-EVALBLOCK-EVDATA-LEN > 250
MOVE 250 TO W-MAX-EVALBLOCK-EVDATA-LEN
END-IF
MOVE 1 TO W-ARG-COUNT
PERFORM VARYING ARGTABLE-ENTRY-X FROM 1 BY 1 UNTIL
ARGTABLE-ENTRY(ARGTABLE-ENTRY-X) = HIGH-VALUES
ADD 1 TO W-ARG-COUNT
END-PERFORM
IF W-ARG-COUNT < 3 OR W-ARG-COUNT > 11
GO TO Z999-ERROR
END-IF
* MOVE ARGUMENTS TO WORKING-STORAGE
PERFORM VARYING W-ARG-ENTRY-X FROM 1 BY 1 UNTIL
W-ARG-ENTRY-X > 11
MOVE ' ' TO W-ARG-DATA(W-ARG-ENTRY-X)
MOVE 0 TO W-ARG-LEN(W-ARG-ENTRY-X)
END-PERFORM
SET W-ARG-ENTRY-X TO 1
PERFORM VARYING ARGTABLE-ENTRY-X FROM 1 BY 1 UNTIL
ARGTABLE-ENTRY(ARGTABLE-ENTRY-X) = HIGH-VALUES
IF ARGTABLE-ARGSTRING-LEN(ARGTABLE-ENTRY-X) >
W-MAX-EVALBLOCK-EVDATA-LEN
GO TO Z999-ERROR
END-IF
SET ADDRESS OF ARGSTRING TO ARGTABLE-ARGSTRING-POINTER
(ARGTABLE-ENTRY-X)
IF ARGTABLE-ARGSTRING-LEN(ARGTABLE-ENTRY-X) > 0
MOVE ARGSTRING
(1:ARGTABLE-ARGSTRING-LEN(ARGTABLE-ENTRY-X))
TO W-ARG-DATA(W-ARG-ENTRY-X)
END-IF
MOVE ARGTABLE-ARGSTRING-LEN(ARGTABLE-ENTRY-X)
TO W-ARG-LEN(W-ARG-ENTRY-X)
SET W-ARG-ENTRY-X UP BY 1
END-PERFORM
CALL 'JLPFCAL1' USING W-ARG-COUNT W-ARG-ENTRYS W-REPLY
W-RESULT
* DISPLAY 'JLPFCAL1 RC = ' RETURN-CODE
IF W-RESULT NOT = 'V'
GO TO Z999-ERROR
END-IF
MOVE W-REPLY-LEN TO EVALBLOCK-EVLEN
IF EVALBLOCK-EVLEN > W-MAX-EVALBLOCK-EVDATA-LEN
MOVE W-MAX-EVALBLOCK-EVDATA-LEN
TO EVALBLOCK-EVLEN
END-IF
MOVE W-REPLY-DATA TO EVALBLOCK-EVDATA(1:EVALBLOCK-EVLEN)
MOVE 0 TO RETURN-CODE
GOBACK.
Z999-ERROR.
MOVE 12 TO RETURN-CODE
GOBACK.
* COPY IN EXECUTION SUBROUTINE FOR FAST EXECUTION
000100 IDENTIFICATION DIVISION. 00010000
000200 00020000
000300 PROGRAM-ID. JLPFCAL1. 00030000
000400 00040000
000500**************************************************************** 00050000
000600* JLPFCALL SUBROUTINE FOR DOING ACTUAL CALL 00060000
000700**************************************************************** 00070000
000800* 00080000
002900* 00290000
003000**************************************************************** 00300000
003100* IT IS NECESSARY TO WRITE THIS IN COBOL BECAUSE THE COBOL DYNAMIC00310000
003200* CALL IS THE ONLY AVAILABLE INTERFACE WHICH CAN HANDLE ALL 00320000
003300* POSSIBLE TYPES OF MODULE ON MVS. THIS IS ALSO TRUE ON MANY 00330000
003400* OTHER OPERATING SYSTEMS 00340000
004000**************************************************************** 00400000
004700 00470000
004800 00480000
004900 ENVIRONMENT DIVISION. 00490000
005000 DATA DIVISION. 00500000
005100 WORKING-STORAGE SECTION. 00510000
005200 00520000
005300 01 W-MODULE-NAME PIC X(8). 00530000
005500 01 W-RETURN-CODE PIC S9(8) COMP. 00550000
006000 01 W-ARG-RETURNED-NO PIC S9(8) COMP. 00600000
006010 01 W-COUNT PIC S9(8) COMP. 00601005
006020 01 W-CHAR-X. 00602005
006030 04 W-CHAR PIC 9. 00603005
006100 00610000
007300 LINKAGE SECTION. 00730000
007400 00740000
007410 01 W-ARG-COUNT PIC S9(8) COMP. 00741000
007431 00743100
007432 01 W-ARG-ENTRYS. 00743200
007433 04 W-ARG OCCURS 11 INDEXED BY 00743300
007434 W-ARG-ENTRY-X. 00743400
007440 07 W-ARG-LEN PIC S9(8) COMP. 00744000
007450 07 W-ARG-DATA PIC X(500). 00745000
007460 00746000
007470 00747000
007480 01 W-REPLY. 00748000
007490 07 W-REPLY-LEN PIC S9(8) COMP. 00749000
007491 07 W-REPLY-DATA PIC X(500). 00749100
007492 00749200
007493 00749300
007494 01 W-RESULT PIC X. 00749400
010100 01010000
010200 PROCEDURE DIVISION USING W-ARG-COUNT W-ARG-ENTRYS W-REPLY 01020000
010400 W-RESULT. 01040000
010500 01050000
016500 01650000
016510 MOVE 'I' TO W-RESULT 01651000
016520 01652000
016600* GET NAME OF MODULE 01660000
016700 01670000
016800 IF W-ARG-LEN(1) > 8 01680000
016900 GO TO Z999-ERROR 01690000
017000 END-IF 01700000
017100* DISPLAY 'HI 01' 01710000
017110 01711000
017200 MOVE W-ARG-DATA(1) TO W-MODULE-NAME 01720008
017300 INSPECT W-MODULE-NAME 01730009
017301 CONVERTING 'abcdefghijklmnopqrstuvwxyz' 01730109
017302 TO 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 01730209
017320 01732008
017400* GET NUMBER OF PARM TO RETURN. DONE THIS WAY COS "NUMERIC" 01740005
017410* IS A BIT DICKY ON SOME COMPILERS 01741005
017500 01750000
017501 MOVE 0 TO W-ARG-RETURNED-NO 01750105
017510 PERFORM VARYING W-COUNT FROM 1 BY 1 UNTIL W-COUNT 01751005
017520 > W-ARG-LEN(2) 01752005
017521 COMPUTE W-ARG-RETURNED-NO = W-ARG-RETURNED-NO * 10 01752105
017530 MOVE W-ARG-DATA(2) (W-COUNT:1) TO W-CHAR-X 01753005
017531 IF W-CHAR-X = '0' 01753105
017532 OR W-CHAR-X = '1' 01753205
017533 OR W-CHAR-X = '2' 01753305
017534 OR W-CHAR-X = '3' 01753405
017535 OR W-CHAR-X = '4' 01753505
017536 OR W-CHAR-X = '5' 01753605
017537 OR W-CHAR-X = '6' 01753705
017538 OR W-CHAR-X = '7' 01753805
017539 OR W-CHAR-X = '8' 01753905
017540 OR W-CHAR-X = '9' 01754005
017557 COMPUTE W-ARG-RETURNED-NO 01755705
017558 = 01755805
017559 W-ARG-RETURNED-NO + W-CHAR 01755905
017560 ELSE 01756005
017561 GO TO Z999-ERROR 01756105
017562 END-IF 01756206
017569 01756905
017570 END-PERFORM 01757005
017580 01758005
017590 COMPUTE W-ARG-RETURNED-NO = W-ARG-RETURNED-NO + 2 01759007
018600 01860000
018700 IF W-ARG-RETURNED-NO < 3 OR W-ARG-RETURNED-NO > W-ARG-COUNT 01870000
018800 GO TO Z999-ERROR 01880000
018900 END-IF 01890000
018910* DISPLAY 'HI 03' 01891000
019000 01900000
019100 01910000
019200* CALL MODULE 01920000
019300 01930000
019400 MOVE 0 TO W-RETURN-CODE 01940000
019500 01950000
019600 EVALUATE W-ARG-COUNT 01960000
019700 01970000
019800 WHEN 3 01980000
019900 01990000
020000 CALL W-MODULE-NAME USING 02000000
020100 W-ARG-DATA(3) 02010000
020200 ON EXCEPTION GO TO Z999-ERROR 02020000
020300 END-CALL 02030000
020400 MOVE RETURN-CODE TO W-RETURN-CODE 02040000
020500 02050000
020600 WHEN 4 02060000
020700 02070000
020800 CALL W-MODULE-NAME USING 02080000
020900 W-ARG-DATA(3) 02090000
021000 W-ARG-DATA(4) 02100000
021100 ON EXCEPTION GO TO Z999-ERROR 02110000
021200 END-CALL 02120000
021300 MOVE RETURN-CODE TO W-RETURN-CODE 02130000
021400 02140000
021500 WHEN 5 02150000
021600 02160000
021700 CALL W-MODULE-NAME USING 02170000
021800 W-ARG-DATA(3) 02180000
021900 W-ARG-DATA(4) 02190000
022000 W-ARG-DATA(5) 02200000
022100 ON EXCEPTION GO TO Z999-ERROR 02210000
022200 END-CALL 02220000
022300 MOVE RETURN-CODE TO W-RETURN-CODE 02230000
022400 02240000
022500 WHEN 6 02250000
022600 02260000
022700 CALL W-MODULE-NAME USING 02270000
022800 W-ARG-DATA(3) 02280000
022900 W-ARG-DATA(4) 02290000
023000 W-ARG-DATA(5) 02300000
023100 W-ARG-DATA(6) 02310000
023200 ON EXCEPTION GO TO Z999-ERROR 02320000
023300 END-CALL 02330000
023400 MOVE RETURN-CODE TO W-RETURN-CODE 02340000
023500 02350000
023600 WHEN 7 02360000
023700 02370000
023800 CALL W-MODULE-NAME USING 02380000
023900 W-ARG-DATA(3) 02390000
024000 W-ARG-DATA(4) 02400000
024100 W-ARG-DATA(5) 02410000
024200 W-ARG-DATA(6) 02420000
024300 W-ARG-DATA(7) 02430000
024400 ON EXCEPTION GO TO Z999-ERROR 02440000
024500 END-CALL 02450000
024600 MOVE RETURN-CODE TO W-RETURN-CODE 02460000
024700 02470000
024800 WHEN 8 02480000
024900 02490000
025000 CALL W-MODULE-NAME USING 02500000
025100 W-ARG-DATA(3) 02510000
025200 W-ARG-DATA(4) 02520000
025300 W-ARG-DATA(5) 02530000
025400 W-ARG-DATA(6) 02540000
025500 W-ARG-DATA(7) 02550000
025600 W-ARG-DATA(8) 02560000
025700 ON EXCEPTION GO TO Z999-ERROR 02570000
025800 END-CALL 02580000
025900 MOVE RETURN-CODE TO W-RETURN-CODE 02590000
026000 02600000
026100 WHEN 9 02610000
026200 02620000
026300 CALL W-MODULE-NAME USING 02630000
026400 W-ARG-DATA(3) 02640000
026500 W-ARG-DATA(4) 02650000
026600 W-ARG-DATA(5) 02660000
026700 W-ARG-DATA(6) 02670000
026800 W-ARG-DATA(7) 02680000
026900 W-ARG-DATA(8) 02690000
027000 W-ARG-DATA(9) 02700000
027100 ON EXCEPTION GO TO Z999-ERROR 02710000
027200 END-CALL 02720000
027300 MOVE RETURN-CODE TO W-RETURN-CODE 02730000
027400 02740000
027500 WHEN 10 02750000
027600 02760000
027700 CALL W-MODULE-NAME USING 02770000
027800 W-ARG-DATA(3) 02780000
027900 W-ARG-DATA(4) 02790000
028000 W-ARG-DATA(5) 02800000
028100 W-ARG-DATA(6) 02810000
028200 W-ARG-DATA(7) 02820000
028300 W-ARG-DATA(8) 02830000
028400 W-ARG-DATA(9) 02840000
028500 W-ARG-DATA(10) 02850000
028600 ON EXCEPTION GO TO Z999-ERROR 02860000
028700 END-CALL 02870000
028800 MOVE RETURN-CODE TO W-RETURN-CODE 02880000
028900 02890000
029000 WHEN 11 02900000
029100 02910000
029200 CALL W-MODULE-NAME USING 02920000
029300 W-ARG-DATA(3) 02930000
029400 W-ARG-DATA(4) 02940000
029500 W-ARG-DATA(5) 02950000
029600 W-ARG-DATA(6) 02960000
029700 W-ARG-DATA(7) 02970000
029800 W-ARG-DATA(8) 02980000
029900 W-ARG-DATA(9) 02990000
030000 W-ARG-DATA(10) 03000000
030100 W-ARG-DATA(11) 03010000
030200 ON EXCEPTION GO TO Z999-ERROR 03020000
030300 END-CALL 03030000
030400 MOVE RETURN-CODE TO W-RETURN-CODE 03040000
030500 03050000
030600 END-EVALUATE 03060000
030610* DISPLAY 'HI 04' 03061000
030700 03070000
030800* MOVE RETURNED DATA BACK TO W-REPLY 03080000
030900 03090000
031000 SET W-ARG-ENTRY-X TO W-ARG-RETURNED-NO 03100000
031100 03110000
031200 MOVE W-ARG-DATA(W-ARG-ENTRY-X) TO W-REPLY-DATA 03120000
031300 03130000
031400* THE RETURNED PARAMETER MAY BE OF DIFFERENT LENGTH. 03140000
031500* WE TRIM OFF TRAILING BLANKS, BUT DO NOT LET THE LENGTH 03150000
031600* OF THE RETURNED PARAMETER FALL BELOW WHAT IT WAS ON INPUT 03160000
031700* EVEN IF THIS DOES LEAVE TRAILING BLANKS 03170000
031800* 03180000
031900 COMPUTE W-REPLY-LEN = (LENGTH OF W-REPLY-DATA) 03190000
032000 PERFORM UNTIL W-REPLY-LEN = 1 03200000
032100 OR W-REPLY-DATA(W-REPLY-LEN:1) NOT = ' ' 03210000
032200 SUBTRACT 1 FROM W-REPLY-LEN 03220000
032300 END-PERFORM 03230000
032400 03240000
032500* DO NOT REDUCE BELOW INPUT VALUE 03250000
032600 03260000
032610* DISPLAY 'HI 05' 03261000
032700 IF W-REPLY-LEN < W-ARG-LEN (W-ARG-ENTRY-X) 03270000
032800 MOVE W-ARG-LEN (W-ARG-ENTRY-X) TO W-REPLY-LEN 03280000
032900 END-IF 03290000
032910 03291000
033000 MOVE 'V' TO W-RESULT 03300000
033100 MOVE 0 TO RETURN-CODE 03310000
034200 03420000
034210* DISPLAY 'HI 06' 03421000
034300 GOBACK. 03430000
034400 03440000
034500 Z999-ERROR. 03450000
034600 03460000
034610* DISPLAY 'HI 07' 03461000
034700 MOVE 12 TO RETURN-CODE 03470000
034800 03480000
034900 GOBACK. 03490000
035000 03500000
035100 03510000
035200 03520000
035300 END PROGRAM JLPFCAL1. 03530000
END PROGRAM 'JLPFCALL'.
~~~~~~~~~~~~ Andy Robertson telephone mobile 0797 0005958 home 01308 420797
-----IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> wrote: -----
To: IBM-MAIN@LISTSERV.UA.EDU
From: Ed Jaffe
Sent by: IBM Mainframe Discussion List
Date: 03/29/2013 02:10PM
Subject: Re: Linking to MVS standard linkage function from Rexx
On 3/29/2013 5:19 AM, Lloyd Fuller wrote:
> ... unless things have changed, Metal C does not handle C++.
> C only. I have not looked specifically at z/OS 1.13, but I do know that in
> 1.12
> and earlier, C only.
True in z/OS 1.13 as well.
--
Edward E Jaffe
Phoenix Software International, Inc
831 Parkview Drive North
El Segundo, CA 90245
http://www.phoenixsoftware.com/
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