Relocatable Object Module Format (OMF) Specification

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The TIS Committee grants you a non-exclusive, worldwide, royalty-free license to use the information disclosed in the Specifications to make your software TIS-compliant; no other license, express or implied, is granted or intended hereby. The TIS Committee makes no warranty for the use of this standard. THE TIS COMMITTEE SPECIFICALLY DISCLAIMS ALL WARRANTIES, EXPRESS AND IMPLIED, AND ALL LIABILITY, INCLUDING CONSEQUENTIAL AND OTHER INDIRECT DAMAGES, FOR THE USE OF THE SPECIFICATION AND THE INFORMATION CONTAINED IN IT, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PROPRIETARY RIGHTS. THE TIS COMMITTEE DOES NOT ASSUME ANY RESPONSIBILITY FOR ANY ERRORS THAT MAY APPEAR IN THE SPECIFICATION, NOR ANY RESPONSIBILITY TO UPDATE THE INFORMATION CONTAINED IN THEM. The TIS Committee retains the right to make changes to this specification at any time without notice. IBM is a registered trademark and OS/2 is a trademark of International Business Machines Corporation. The Intel logo is a registered trademark, and i386 and Intel386 are trademarks of Intel Corporation and may be used only to identify Intel products. Microsoft, Microsoft C, MS, MS-DOS, and XENIX are registered trademarks and Windows is a trademark of Microsoft Corporation. Phoenix is a registered trademark of Phoenix Technologies, Ltd. UNIX is a registered trademark in the United States and other countries, licensed exclusively through X/Open Company Limited. * Other brands and names are the property of their respective owners. Copyright © 1992, 1993 UNIX International, Inc. i
Tool Interface Standards OMF: Relocatable Object Module Format, Version 1.1 The Relocatable Object Module Format Specification, Version 1.1, is the result of the work of the Tool Interface Standards (TIS) Committee--an association of members of the microcomputer industry formed to work toward standardization of the software interfaces visible to development tools for 32-bit Intel Architecture operating environments. Such interfaces include object module formats, executable file formats, and debug record information and formats. The goal of the committee is to help streamline the software development process throughout the microcomputer industry, currently concentrating on 32-bit operating environments. To that end, the committee has developed specifications--some for file formats that are portable across leading industry operating systems, and others describing formats for 32-bit Windows operating systems. Originally distributed collectively as the TIS Portable Formats Specifications, Version 1.1, these specifications are now separated and distributed individually. TIS Committee members include representatives from Absoft Corporation, Autodesk Corporation, Borland International Corporation, IBM Corporation, Intel Corporation, Lahey Corporation, Lotus Corporation, MetaWare Corporation, Microtec Research, Microsoft Corporation, Novell Corporation, The Santa Cruz Operation, and WATCOM International Corporation. PharLap Software Incorporated and Symantec Corporation also participated in the specification definition efforts. The Relocatable Object Module Format Specification, Version 1.1, is the latest deliverable of the TIS Committee. It is based on existing, proven formats in keeping with the TIS Committee's goal to adopt, and when necessary, extend existing standards rather than invent new ones. Relocatable Object Module Format Specification (OMF) This document represents the TIS OMF specification, the 32-bit Relocatable Object Module Format standard. OMF is the official definition for the standard relocatable object module format (OMF) for 32-bit applications and tools for Intel Architectures. This document presents the heritage of the format with a focus on its current 32-bit aspects. It is published and controlled by the Tool Interface Standards (TIS) Committee, an open industry standards body, and will be revised as clarifications and technical information become available to the TIS Committee. This OMF represents the consolidation of different OMFs in use today into a single industry standard specification. The information included within this document has been compiled from the following documents: The MS-DOS Encyclopedia by Microsoft Press, the PharLap 386/Link Reference Manual, the Intel 8086 object module specification (Intel Technical Specification 121748-001), the IBM OS/2 16/32-bit Object Module Format (OMF) and Linear eXecutable Module Format (LX), Revision 7 (dated April 24, 1993), and internal Microsoft documents.
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Relocatable Object Module Format (OMF) Specification

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