Am new to this pointer concept in Cobol programming and in my project trying to send a Character pointer from C program to Cobol. Mainframe Pointers. To provide compatibility with mainframe- style pointers in COBOL programs. You need the AMODE directive for any program module which: Creates mainframe- style pointer items - using the syntax. SETpointer- item. TO ADDRESS OF data- item. Uses mainframe- style pointer items using the syntax. SET ADDRESS OFlinkage- item. TO pointer- item. Contains a Working- Storage item passed to a subprogram that creates a. Working- Storage item This system also provides and sets the DATA Compiler directive that can. Data Division of a program compiled using the. AMODE Compiler directive. The following table shows the settings for AMODE and DATA that are. COBOL dialects: COBOL Dialect Directive COBOL 3. Pointers In Cobol Programs TutorialsAMODE(3. 1) DATA(3. VS COBOL II (all releases)AMODE(3. DATA(3. 1)OS/VS COBOLAMODE(2. You must specify the appropriate settings for these directives. Related. Topics. On the mainframe, a COBOL program can continue to use the data defined. Data Division of a subprogram even after that subprogram has been. COBOL - Using pointers in Cobol - Mainframe forum - Mainframe Mainframe IBM tutorial, tutorials, material, materilas, faq, faqs, interview questions, COBOL,CICS,DB2. In some programs, the required memory. Some extended versions of COBOL also provide PROCEDURE-POINTER. It does not have pointer arithmetic. Chapter 15: Compatibility with the Mainframe Environment. To provide compatibility with mainframe-style pointers in COBOL programs, Mainframe Express. Micro Focus COBOL for UNIX COBOL User Guide Mixing C and COBOL Programs The Micro Focus COBOL system provides a number of C functions and COBOL library routines to. This facility has been emulated in this system, although we do not. You can enable this facility by using the mfpm. Then, after the subprogram is canceled, you can. Working- Storage Section. This can occur if: There is insufficient storage available to satisfy a new storage. The canceled subprogram is reloaded. In this case, the old. Working- Storage area is released and a new area allocated and initialized. Compatibility with the Mainframe Environment. This chapter describes facilities provided by Mainframe Express. Mainframe pointers for COBOL programs. Entry point mapping for COBOL and Assembler programs. Allocating a data set using the DATACLAS parameter through Storage. Management Subsystem (SMS)To provide compatibility with mainframe- style pointers in COBOL. Mainframe Express: You need the AMODE directive for any program module which: Creates mainframe- style pointer items (using SET. TO ADDRESS OF data- item syntax). Uses mainframe- style pointer items (using SET ADDRESS OF. TO pointer- item syntax). Contains a Working- Storage item passed to a subprogram that creates a. Working- Storage item. Mainframe Express also provides and sets the DATA compiler. Data Division of a program. AMODE compiler directive. Mainframe Express sets the directives as follows: COBOL Dialect. Directive. COBOL 3. AMODE(3. 1) DATA(3. VS COBOL II (all releases)AMODE(3. DATA(3. 1)OS/VS COBOLAMODE(2. Note: You cannot see the directives in the Build settings. Build Settings dialog box as they are set implicitly. For more details of the AMODE and DATA directives, see the topics for. Help Topics on the Mainframe Express. Help menu, then on the Contents tab click Reference, Development. Environment, Compiler Directives. On the mainframe, a COBOL program can continue to use the data defined. Data Division of a subprogram even after that subprogram has been. This facility has been emulated in Mainframe Express though we. You can enable this facility by checking Enable access to canceled. Data Divisions on the COBOL page of the Execution. Project Settings dialog box. Before the subprogram is canceled, you should set pointer variables in. Then, after the subprogram is canceled, you. Mainframe Express releases the. Working- Storage of the canceled subprogram. This can occur if: There is insufficient storage available to satisfy a new storage. The canceled subprogram is reloaded. In this case, the old. Working- Storage area is released and a new area allocated and. When a call to an entry. If it does not find the entry point- name, it looks on disk for. If it does not find one it returns an. Consequently, if your program calls an entry point that is not the name. This is the only case where you need to use the Entry Point Mapper. This problem often occurs when you take code that has been downloaded. PC for further development. Mainframe programs. On the mainframe. Using Mainframe Express, if the program containing the entry point has. To get round this problem, you need to create an entry- name map file. There are two methods of creating an entry- name map file: The Entry Point Mapping facility provided in the IDE. We recommend. this method if the programs in your application are in COBOL. Create the file using a text editor. If you have an application with a mixture of COBOL and Assembler. COBOL programs using. Entry Point Mapping facility and add the table entries for the. Assembler programs using the text editor. The entry point map file is called mfentmap. For example, if. your project is called myproject and you use the default directory names. The Entry Point Mapping facility automatically creates the file in the. To give you more flexibility when working with mfentmap. Mainframe Express searches for them in. The General subtab of the. Execution. tab of the Project Settings dialog box includes options that enable you to. Mainframe Express looks for mfentmap. The Folder containing MFENTMAP. DAT field enables you to. The. folder you specify can be on your local machine or on a network. If. there are a number of mfentmap. To change the order in which Mainframe Express finds mfentmap. Workgroup View. To create an entry name map using Entry Point Mapping, click Alternate. Entry Points on the Build menu. You see the Entry Point. Mapping dialog box. Use this dialog box to specify the programs for which. Note: If you check the Use concatenated MFENTMAP. DAT search. option on the Project Settings dialog box, you cannot specify a location. Generated file location field of the Entry Point Mapping. Instead, this field shows the first folder in the load library. If you create your map file with an editor you must manually enter all. For each entry point you need to enter the following. A calls entry point B which is in program C. The table entry in. If Mainframe Express. For Assembler programs you can use the ALIAS command to create an alias. For example, to create an alias name of pacct. Assembler (. lin) file command line is: ALIAS pacct. For COBOL programs you must use the manual method since it does not have. To do this you can use the Entry. Point Mapper to emulate the alias function of an IBM mainframe linkage. To enter aliases manually, you must edit the file mfentmap. You cannot enter aliases into this file using the. Entry Point Mapping dialog box. At run time, Mainframe Express first looks for a program with the. If it finds one, it does not invoke the Entry Point Mapper. Enter the alias on the . Within the run. unit, progroot issues a call using the name pacct. The actual name of. The table entry in the mfentmap. A data class is a template of data set attributes. Using a graphical interface (accessable by clicking SMS on the. Options menu), you can quickly and easily define these data. DATACLAS parameter of a JCL DD statement. DATACLASS parameter of a TSO ALLOCATE command. DATACLASS parameter of an IDCAMS DEFINE command. TU) of SVC 9. 9 (DYNALLOC). Data class definitions apply on a project- by- project basis, with. You can make this definitions. Mainframe Express users, ensuring consistency. Whenever the data class specification is. Mainframe Express uses a default data class called MFEDFTDC, if. This data class must exist in a project's data class. For full information on SMS, see the DFSMSdfp Storage. Administration Reference available from the. IBM Book. Manager. Server Library. Copyright . All rights reserved. This document and the proprietary marks and names.
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