53 lines
2.5 KiB
Text
53 lines
2.5 KiB
Text
xv6 is a re-implementation of Dennis Ritchie's and Ken Thompson's Unix
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Version 6 (v6). xv6 loosely follows the structure and style of v6,
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but is implemented for a modern x86-based multiprocessor using ANSI C.
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ACKNOWLEDGMENTS
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xv6 is inspired by John Lions's Commentary on UNIX 6th Edition (Peer
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to Peer Communications; ISBN: 1-57398-013-7; 1st edition (June 14,
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2000)). See also http://pdos.csail.mit.edu/6.828/2016/xv6.html, which
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provides pointers to on-line resources for v6.
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xv6 borrows code from the following sources:
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JOS (asm.h, elf.h, mmu.h, bootasm.S, ide.c, console.c, and others)
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Plan 9 (entryother.S, mp.h, mp.c, lapic.c)
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FreeBSD (ioapic.c)
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NetBSD (console.c)
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The following people have made contributions: Russ Cox (context switching,
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locking), Cliff Frey (MP), Xiao Yu (MP), Nickolai Zeldovich, and Austin
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Clements.
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We are also grateful for the bug reports and patches contributed by Silas
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Boyd-Wickizer, Cody Cutler, Mike CAT, Nelson Elhage, Nathaniel Filardo, Peter
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Froehlich, Yakir Goaron, Shivam Handa, Bryan Henry, Jim Huang, Anders Kaseorg,
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kehao95, Wolfgang Keller, Eddie Kohler, Imbar Marinescu, Yandong Mao, Hitoshi
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Mitake, Carmi Merimovich, Joel Nider, Greg Price, Ayan Shafqat, Eldar Sehayek,
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Yongming Shen, Cam Tenny, Rafael Ubal, Warren Toomey, Stephen Tu, Pablo Ventura,
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Xi Wang, Keiichi Watanabe, Nicolas Wolovick, Jindong Zhang, and Zou Chang Wei.
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The code in the files that constitute xv6 is
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Copyright 2006-2016 Frans Kaashoek, Robert Morris, and Russ Cox.
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ERROR REPORTS
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If you spot errors or have suggestions for improvement, please send email to
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Frans Kaashoek and Robert Morris (kaashoek,rtm@csail.mit.edu). If you have
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suggestions for improvements, please keep in mind that the main purpose of xv6
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is as a teaching operating system for MIT's 6.828. For example, we are in
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particular interested in simplifications and clarifications, instead of
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suggestions for new systems calls, more portability, etc.
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BUILDING AND RUNNING XV6
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To build xv6 on an x86 ELF machine (like Linux or FreeBSD), run "make".
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On non-x86 or non-ELF machines (like OS X, even on x86), you will
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need to install a cross-compiler gcc suite capable of producing x86 ELF
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binaries. See http://pdos.csail.mit.edu/6.828/2016/tools.html.
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Then run "make TOOLPREFIX=i386-jos-elf-".
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To run xv6, install the QEMU PC simulators. To run in QEMU, run "make qemu".
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To create a typeset version of the code, run "make xv6.pdf". This
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requires the "mpage" utility. See http://www.mesa.nl/pub/mpage/.
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