Reverse Engineering from Mainframe Assembly to C Codes in Legacy Migration

Fujiwara, Daisuke; Ishiura, Nagisa; Sakai, Ryo; Aoki, Ryo; Ogawara, Takashi

doi:10.1109/iiai-aai.2016.37

Cited by 3 publications

(4 citation statements)

References 4 publications

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“…Approaches tackling Scientific applications 33‐35 migrate programs written in languages such as C/C++ and FORTRAN‐77 to Java and object‐oriented designs. In turn, approaches tackling Transactional applications 16,19,36‐49 migrate from mainframe technologies (e.g., IBM Assembler, COBOL) and Fourth Generation Languages (e.g., Oracle Forms) to Web technologies, in some cases to be complaint with SOA or cloud architecture patterns. Even though, our case study fixed the translation from Oracle Forms to Java and .Net, the approach has been designed in an agnostic way for the sake of being applied to other source/target technologies.…”

Section: Related Workmentioning

confidence: 99%

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Model‐based assisted migration of oracle forms applications: The overall process in an industrial setting

Rodríguez¹,

Garcés

Cabot

et al. 2021

Softw Pract Exp

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The migration of software is an economically important niche since the daily operations of many business still rely on systems based on legacy technologies. Migration to more recent technologies comes with major technical and management challenges mainly related to knowledge‐loss issues on the specific technology but also on the architecture and design of the legacy. This article presents a method that addresses the reverse/forward engineering tasks as well as some management challenges such as the planning of the migration based on a better understanding of the system. The process relies on the use of models and transformations to create high‐level abstraction views of the legacy. A big challenge with the migration of certain legacy applications is that much of the business logic is inside triggers which are written in the PL/SQL language and scattered across the application layers. Therefore, developers need to know what they need to migrate and where it is. The main contribution of our work is that the abstractions allow developers to understand and plan the migration without the need of having a vast knowledge on the initial technology. Furthermore, our views help developers to decide about the structure and business logic they want to have in the target system. In this article, we describe the application of the method to the Oracle Forms case study. Nevertheless, the approach can be generalized to other technologies through new bridges that transform from said technologies to the abstract views. The article ends by reporting lessons learned from our experience.

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Section: Related Workmentioning

confidence: 99%

“…Nearly all the reviewed approaches 16,19,36‐43,46‐49 use some kind of intermediate representation to decouple the input and output. In most cases (except by 43 ) the target architecture is unique.…”

Section: Related Workmentioning

confidence: 99%

Model‐based assisted migration of oracle forms applications: The overall process in an industrial setting

Rodríguez¹,

Garcés

Cabot

et al. 2021

Softw Pract Exp

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“…This approach consists of code analysis, re-documentation and reimplementation by combining commercial and ad hoc tools. Fujiwara et al [12] proposed a reverse engineering technique to generate C code from COBOL assembly programs. This technique is based on dataflow analysis, recognition of control structures, and code pattern matching.…”

Section: A Mainframe Migrationmentioning

confidence: 99%

“…Many techniques and methods have been proposed in the literature for migration, replacement or modernization of mainframe/COBOL systems to modern technologies [8,[10][11][12]. Unfortunately, these techniques cannot be applied extensively in a systematic way due to two main limitations.…”

Section: Introductionmentioning

confidence: 99%

Mainframe Migration Based on Screen Scraping

Flores-Ruiz¹,

Pérez‐Castillo²,

Domann³

et al. 2018

2018 IEEE International Conference on Software Maintenance and Evolution (ICSME)

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Companies possess a history and large array of legacy information systems that consume a great part of their IT budget in operations and maintenance. These systems are mission-critical, and they cannot be fully discarded since they retain business rules and provide information that is not available anywhere else. Unfortunately, decades-old legacy systems cannot easily withstand modification. Mainframes specifically conglomerate most of these legacy systems. Although there are some white-box solutions for migrating mainframe systems, such solutions lack systematicity and do not provide mechanisms for verifying business rules preservation. Hence, this paper presents a black-box solution (ignoring the internal structure of COBOL programs) which uses a screen scraping technique for migrating mainframe systems toward JavaFX and relational databases. Together with this solution, this paper provides an automatic verification technique to check if the recreated system reflects all the embedded business logic. This proposal has been designed and developed in the context of an industrial project, in which the solution has already migrated 43,000,000 mainframe screens from four systems. The main implication for researchers and practitioners is that screen scraping has proved to be feasible for migrating mainframe systems in large-scale projects within a manageable time-frame while preserving business.

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Leveraging Intermediate Languages: Current Applications

Cannan,

Morris

2024

2024 4th Interdisciplinary Conference on Electrics and Computer (INTCEC)

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Reverse Engineering from Mainframe Assembly to C Codes in Legacy Migration

Cited by 3 publications

References 4 publications

Model‐based assisted migration of oracle forms applications: The overall process in an industrial setting

Model‐based assisted migration of oracle forms applications: The overall process in an industrial setting

Mainframe Migration Based on Screen Scraping

Leveraging Intermediate Languages: Current Applications

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