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z/OS 64-bit C/C++ and Java Programming Environment

An IBM Redpaper publication

Note: This is publication is now archived. For reference only.


Published on 29 November 2004, updated 06 January 2005

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IBM Form #: REDP-9110-00

Authors: Vamsi Kulukuru

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    One of the key enhancements available in z/OS V1R6 is 64-bit application development support for C/C++. With 64-bit support, applications can take advantage of the expanded 1 million TB address space. In this IBM Redpaper, we introduce C/C++ programming in a 64-bit environment, examine changes to the z/OS Language Environment, discuss migrating to 64-bit, and consider Java 64-bit programming.

    Table of Contents

    - The z/OS 64-bit programming model

    - Compiling and linking 64-bit programs

    - The 64-bit memory model

    - Changes to the Language Environment

    - ILP32 and LP64 coexistence

    - General C/C++ migration tips

    - Porting Java applications


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