50 lines
1.9 KiB
Plaintext
50 lines
1.9 KiB
Plaintext
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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ACKNOWLEDGEMENTS
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xv6 is inspired by John Lions' 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/6.828/2006/v6.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 (bootother.S, mp.h, mp.c, ioapic.h, lapic.c)
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FreeBSD (ioapic.c)
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NetBSD (console.c)
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The following people made contributions:
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Russ Cox (context switching, locking)
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Cliff Frey (MP)
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Xiao Yu (MP)
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The code in the files that constitute xv6 are
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Copyright 2006 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
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email to Frans Kaashoek and Robert Morris
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({kaashoek,rtm}@csail.mit.edu). This version is the very first one,
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so don't be surprised if there are errors or the code is unclear.
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BUIDLING 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/6.828/2006/tools.html.
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Then run "make TOOLPREFIX=i386-jos-elf-".
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To run xv6, you can use Bochs or QEMU, both PC simulators. Bochs makes
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debugging easier, but QEMU is much faster.
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To run in Bochs, run "make bochs" and then type "c" at the bochs prompt.
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To run in QEMU, run "make qemu". Both log the xv6 screen output to
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standard output.
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To create a typeset version of the code, run "make xv6.pdf".
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This requires the "mpage" text formatting utility.
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See http://www.mesa.nl/pub/mpage/.
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