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dc.contributor.advisorRobert T. Morris and Jeffrey W. Sheldon.en_US
dc.contributor.authorChen, Yu-hsin, M. Eng. Massachusetts Institute of Technologyen_US
dc.contributor.otherMassachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.en_US
dc.date.accessioned2010-03-25T15:00:18Z
dc.date.available2010-03-25T15:00:18Z
dc.date.copyright2009en_US
dc.date.issued2009en_US
dc.identifier.urihttp://hdl.handle.net/1721.1/53095
dc.descriptionThesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2009.en_US
dc.descriptionIncludes bibliographical references (p. 95).en_US
dc.description.abstractThe goal of this project is to enhance performance of virtual machines and simplify the design of the virtual machine monitor by running 32-bit x86 operating systems in x86-64 mode. In order to do so, 32-bit operating system binary code is translated into x86-64 binary code via "widening binary translation"; x86-32 code is "widened" into x86-64 code. The main challenge of widening BT is emulating x86-32 legacy segmentation in x86-64 mode. Widening BT's solution is to emulate segmentation in software. Most of the overhead for software segmentation can be optimized away. The main contribution of widening BT is simplification of the VMM, which reduces the human cost of maintaining a complicated VMM. Widening BT also improves performance of 32-bit guest operating systems running in virtual machines and demonstrates the independence of virtual machines from physical hardware. With widening BT, legacy hardware mechanisms like segmentation can be dropped. Therefore widening BT reduces hardware's burden of backwards-compatibility, encouraging software/hardware co-design.en_US
dc.description.statementofresponsibilityby Yu-hsin Chen.en_US
dc.format.extent95 p.en_US
dc.language.isoengen_US
dc.publisherMassachusetts Institute of Technologyen_US
dc.rightsM.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.en_US
dc.rights.urihttp://dspace.mit.edu/handle/1721.1/7582en_US
dc.subjectElectrical Engineering and Computer Science.en_US
dc.titleDynamic binary translation from x86-32 code to x86-64 code for virtualizationen_US
dc.typeThesisen_US
dc.description.degreeM.Eng.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
dc.identifier.oclc502427588en_US


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