If I have understood your code (and I am not a COBOL programmer) then the machine code is loaded into a data area and executed from there. I think the latest z machine offer non-executable storage. If COBOL makes use of this, or is ever changed to make use of this, then I think your code will fail.
Lennie Dymoke-Bradshaw Consultant working on contract for BMC mainframe Services by RSM Partners 'Dance like no one is watching. Encrypt like everyone is.' -----Original Message----- From: IBM Mainframe Discussion List <[email protected]> On Behalf Of Farley, Peter x23353 Sent: 17 March 2021 15:50 To: [email protected] Subject: This Call-Assembler-inside-COBOL technique works, but is it risky to use? I discovered that one can code and call extremely simple assembler code from completely within a COBOL source program, but it is a two-step process which I will describe below. My question is whether using a technique like this is "risky" in the sense that it may someday, under a future incarnation of the compiler, stop working? The technique: Code a simple assembler program like the following and browse the resulting listing that shows the generated object code: COBSTCKE CSECT , L 15,0(,1) GET ARGUMENT ADDRESS STCKE 0(15) STCKE INTO ARGUMENT AREA XR 15,15 SET RETURN CODE = 0 BR 14 RETURN TO CALLER Then copy the generated object code into a COBOL source program as follows: ID DIVISION. PROGRAM-ID. COBSTCKE. ENVIRONMENT DIVISION. DATA DIVISION. WORKING-STORAGE SECTION. 01 WS-TOD-VALUE PIC X(16). 01 WS-GETTOD-PROGRAM. * GET ARGUMENT ADDRESS L 15,0(,1) 05 FILLER PIC X(04) VALUE X'58F01000'. * STCKE INTO ARGUMENT AREA STCKE 0(15) 05 FILLER PIC X(04) VALUE X'B278F000'. * SET RETURN-CODE = 0 XR 15,15 05 FILLER PIC X(02) VALUE X'17FF'. * RETURN TO CALLER BR 14 05 FILLER PIC X(02) VALUE X'07FE'. 01 WS-GETTOD-PTR. 05 GETTOD-ADDR PROCEDURE-POINTER VALUE NULL. 05 FILLER REDEFINES GETTOD-ADDR. 10 GETTOD-ADDR1 POINTER. 10 GETTOD-ADDR2 POINTER. PROCEDURE DIVISION. SET GETTOD-ADDR1 TO ADDRESS OF WS-GETTOD-PROGRAM. CALL GETTOD-ADDR USING WS-TOD-VALUE. DISPLAY FUNCTION HEX-OF (WS-TOD-VALUE). GOBACK. Peter This message and any attachments are intended only for the use of the addressee and may contain information that is privileged and confidential. If the reader of the message is not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail and delete the message and any attachments from your system. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
