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Paper Abstract and Keywords
Presentation 2016-01-21 13:00
Mainframe Assembly to C translation in Legacy Migration
Daisuke Fujiwara, Nagisa Ishiura, Ryo Sakai (Kwansei Gakuin Univ.), Ryo Aoki, Takashi Ogawara (SYSTEM'S) VLD2015-104 CPSY2015-136 RECONF2015-86
Abstract (in Japanese) (See Japanese page) 
(in English) This article presents a method of translating mainframe assembly programs to C programs. In ``legacy migration,'' where enterprise systems running on mainframe computers are ported to open systems based on Linux, etc., porting of assembly programs needs manual translation and takes enourmous amount of man-hours. In our method, IBM mainframe assembly programs, which are called as subroutines from high-level languages such as COBOL, are automatically translated into C programs which produce the same results and yet have good readability. Assembly programs are converted into intermediate representation with the SSA form on which dataflow analysis, recovering of control structures, and pattern match based transformations are applied to produce highly readable codes. Along with translation, correspondence between source assembly codes and resulting C codes are also generated as documents, which plays an important role in manually correcting incomplete C codes from architecture dependent codes or self morphing codes. A prototype system based on our method successfully translated some assembly codes into C program with function, if, and do-while structures.
Keyword (in Japanese) (See Japanese page) 
(in English) Legacy Migration / Mainframe Assembly / / / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 398, VLD2015-104, pp. 203-208, Jan. 2016.
Paper # VLD2015-104 
Date of Issue 2016-01-12 (VLD, CPSY, RECONF) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF VLD2015-104 CPSY2015-136 RECONF2015-86

Conference Information
Committee VLD CPSY RECONF IPSJ-SLDM IPSJ-ARC  
Conference Date 2016-01-19 - 2016-01-21 
Place (in Japanese) (See Japanese page) 
Place (in English) Hiyoshi Campus, Keio University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) FPGA Applications, etc 
Paper Information
Registration To VLD 
Conference Code 2016-01-VLD-CPSY-RECONF-SLDM-ARC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Mainframe Assembly to C translation in Legacy Migration 
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Keyword(1) Legacy Migration  
Keyword(2) Mainframe Assembly  
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1st Author's Name Daisuke Fujiwara  
1st Author's Affiliation Kwansei Gakuin University (Kwansei Gakuin Univ.)
2nd Author's Name Nagisa Ishiura  
2nd Author's Affiliation Kwansei Gakuin University (Kwansei Gakuin Univ.)
3rd Author's Name Ryo Sakai  
3rd Author's Affiliation Kwansei Gakuin University (Kwansei Gakuin Univ.)
4th Author's Name Ryo Aoki  
4th Author's Affiliation SYSTEM'S Co., Ltd (SYSTEM'S)
5th Author's Name Takashi Ogawara  
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Speaker Author-1 
Date Time 2016-01-21 13:00:00 
Presentation Time 25 minutes 
Registration for VLD 
Paper # VLD2015-104, CPSY2015-136, RECONF2015-86 
Volume (vol) vol.115 
Number (no) no.398(VLD), no.399(CPSY), no.400(RECONF) 
Page pp.203-208 
#Pages 6 
Date of Issue 2016-01-12 (VLD, CPSY, RECONF) 

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