QEMU Binary Translation Ashish Kaila akaila Maneet Singh

QEMU Binary Translation Ashish Kaila (akaila) Maneet Singh (maneets) 1

Virtualization Techniques Ø Full Virtualization using Binary Translation 2

Virtualization Techniques Ø OS Assisted Virtualization or Paravirtualization 3

Virtualization Techniques Ø Hardware Assisted Virtualization 4

Binary Translation Ø VMWare Software Virtualization Translation Units (TU) Source Inst Stream (binary) IR 1 IR 2. . IRn Compiled Code Fragment (CCF) Target Inst Stream (binary) Dynamic Binary Translator 5

Binary Translation Ø QEMU Binary Translation in brief Source Inst Stream (binary) Microoperations implemented in C Object file dyngen Target Inst Stream (binary) 6

Quick EMUlation (QEMU) Ø Machine Emulator Ø Virtualizer QEMU modes: Ø User-mode emulation – Allows a process built for one CPU to be executed on another. Ø System-mode emulation – Allows emulation of a full system, including processor and assorted peripherals. 7

References • A comparison of software and hardware techniques for x 86 virtualization – Keith Adams, Ole Agesen, ASPLOS’ 06 • Understanding Full Virtualization, Paravirtualization and Hardware Assist – VMware Whitepaper • QEMU, a fast and portable Dynamic Translator – Fabrice Bellard • QEMU Wiki: wiki. qemu. org 8

QEMU Deep Dive Source: wiki. qemu. org 9

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QEMU ARCHITECTURE 17

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Thank you 20