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kolya 00ce31c09c update .cvsignore 2008-10-15 04:54:24 +00:00
web add copyright notice 2008-09-09 11:42:44 +00:00
.cvsignore update .cvsignore 2008-10-15 04:54:24 +00:00
BUGS sh 2007-09-05 15:55:43 +00:00
LucidaSans-Typewriter83 add nice font 2008-08-20 18:00:24 +00:00
Makefile restore std toolprefix 2008-09-11 10:22:01 +00:00
Notes nit in console interrupts 2006-09-07 00:00:33 +00:00
README spelling 2007-08-29 18:18:57 +00:00
TRICKS fork minibug 2007-11-28 20:47:22 +00:00
asm.h continuous quality management 2007-08-31 19:55:27 +00:00
bio.c formatting 2007-08-28 05:00:53 +00:00
bootasm.S fix comments 2007-09-15 20:05:47 +00:00
bootmain.c fix comments 2007-09-15 20:05:47 +00:00
bootother.S the old explanation of AP startup might have been correct, but 2008-08-28 00:52:05 +00:00
buf.h Another attempt at the bio.c comment. 2007-08-27 14:09:30 +00:00
cat.c more consistent spacing 2007-08-28 18:32:08 +00:00
console.c minor cleanup 2008-10-12 20:19:16 +00:00
cuth delete unnecessary #include lines 2007-08-27 23:26:33 +00:00
defs.h cleaner 2007-09-27 21:02:03 +00:00
dev.h Change dev read/write functions 2007-08-28 17:49:49 +00:00
dot-bochsrc make bochsrc work for bochs 2.2.6 2008-09-03 14:10:47 +00:00
echo.c Remove puts in favor of printf. 2007-08-24 20:03:40 +00:00
elf.h clumsy blank pages to make some files align better 2007-08-28 05:00:39 +00:00
exec.c oops - broke arg counting 2007-08-30 18:19:52 +00:00
fcntl.h nit 2007-08-28 04:13:24 +00:00
file.c remove _ from pipe; be like file 2007-08-28 04:22:35 +00:00
file.h Remove struct uinode. 2007-08-24 20:54:23 +00:00
forktest.c test that fork fails gracefully 2007-08-24 20:20:23 +00:00
fs.c be clear what the root i-number is 2008-10-08 18:57:13 +00:00
fs.h be clear what the root i-number is 2008-10-08 18:57:13 +00:00
fsvar.h nits 2007-08-28 18:23:48 +00:00
grep.c add grep; add lost echo 2007-08-28 04:26:34 +00:00
ide.c make new Homework 8 work 2007-08-30 18:21:35 +00:00
init.c comments; rename irq_ to pic_ 2007-08-28 19:04:36 +00:00
initcode.S Rename main0 to main. 2007-08-27 23:32:16 +00:00
ioapic.c oops - wrong bit (vic zandy) 2007-12-20 18:27:07 +00:00
kalloc.c delete unnecessary #include lines 2007-08-27 23:26:33 +00:00
kbd.c comments; rename irq_ to pic_ 2007-08-28 19:04:36 +00:00
kbd.h formatting; split kbd constants into kbd.h 2007-08-14 19:31:16 +00:00
kill.c add kill 2007-08-08 08:50:23 +00:00
lapic.c minor cleanup 2008-10-12 20:19:16 +00:00
ln.c add ln 2007-08-22 05:54:55 +00:00
ls.c Remove puts in favor of printf. 2007-08-24 20:03:40 +00:00
main.c fix obvious printf nits after reading through code 2008-08-21 23:24:02 +00:00
mkdir.c more consistent spacing 2007-08-28 18:32:08 +00:00
mkfs.c be clear what the root i-number is 2008-10-08 18:57:13 +00:00
mmu.h don't call it ss - that's the stack segment 2007-09-27 16:47:50 +00:00
mp.c bda[0xE] is a 16-bit segment number, 2007-11-28 20:17:04 +00:00
mp.h Simplify MP hardware code. 2007-08-27 22:53:31 +00:00
param.h simplify ide queuing 2007-08-24 19:32:36 +00:00
picirq.c comments; rename irq_ to pic_ 2007-08-28 19:04:36 +00:00
pipe.c clean up circular buffers, so pipe can queue 512 bytes rather than 511 2008-08-22 00:26:22 +00:00
pr.pl runoff changes 2006-09-08 13:53:18 +00:00
printf.c spaces around else for rtm 2007-08-28 18:37:41 +00:00
proc.c omit *.d from tar file 2008-09-11 10:20:40 +00:00
proc.h Incorporate new understanding of/with Intel SMP spec. 2007-10-01 20:43:15 +00:00
rm.c more consistent spacing 2007-08-28 18:32:08 +00:00
runoff minor cleanup with STUB macro 2008-10-12 19:54:11 +00:00
runoff.list final nits 2007-08-28 19:39:49 +00:00
runoff.spec nits 2007-08-28 05:01:04 +00:00
runoff1 PDF at http://am.lcs.mit.edu/~rsc/xv6.pdf 2007-08-22 06:01:32 +00:00
sh.c clumsy cd 2007-08-30 18:30:26 +00:00
show1 PDF at http://am.lcs.mit.edu/~rsc/xv6.pdf 2007-08-22 06:01:32 +00:00
sign.pl spacing fixes: no tabs, 2-space indents (for rtm) 2006-09-06 17:04:06 +00:00
sleep1.p Model verifying that wakeup really 2007-10-12 04:21:04 +00:00
spinlock.c include explicitly initialized globals (int x = 0;) in cross-refs, 2008-10-12 18:45:30 +00:00
spinlock.h formatting updates 2008-08-20 18:00:13 +00:00
spinp Model verifying that wakeup really 2007-10-12 04:21:04 +00:00
stat.h more comments 2006-09-07 14:12:30 +00:00
string.c spaces around else for rtm 2007-08-28 18:37:41 +00:00
swtch.S yank out stack overflow checking ugliness 2007-09-27 20:38:53 +00:00
symlink.patch symlink implementation 2007-08-30 18:36:38 +00:00
syscall.c spaces around else for rtm 2007-08-28 18:37:41 +00:00
syscall.h Replace yield system call with sleep. 2007-08-27 13:34:35 +00:00
sysfile.c believe it or not, this was working 2007-09-27 05:13:10 +00:00
sysproc.c fork minibug 2007-11-28 20:47:22 +00:00
timer.c formatting updates 2008-08-20 18:00:13 +00:00
toc.ftr nits 2007-08-28 19:25:04 +00:00
toc.hdr nits 2007-08-28 18:23:48 +00:00
trap.c interrupts during system calls 2007-09-27 21:37:45 +00:00
trapasm.S always save and restore %fs, %gs to ensure old segment entries are never 2008-09-24 01:48:31 +00:00
traps.h typo 2007-08-08 08:27:32 +00:00
types.h align 2007-08-24 20:27:47 +00:00
ulib.c Remove puts in favor of printf. 2007-08-24 20:03:40 +00:00
umalloc.c spaces around else for rtm 2007-08-28 18:37:41 +00:00
user.h add struct stat decl 2007-08-28 04:20:25 +00:00
usertests.c make slow bigdir last test 2007-09-27 12:29:06 +00:00
usys.S Replace yield system call with sleep. 2007-08-27 13:34:35 +00:00
vectors.pl trap 9 does not push ec: fix from Greg Price <price@mit.edu> 2008-09-24 18:20:56 +00:00
wc.c more consistent spacing 2007-08-28 18:32:08 +00:00
x86.h always save and restore %fs, %gs to ensure old segment entries are never 2008-09-24 01:48:31 +00:00
xv6-rev0.tar.gz dist tarball 2006-09-08 15:44:42 +00:00
xv6-rev1.tar.gz DO NOT MAIL: xv6-rev1 2007-08-30 14:11:21 +00:00
xv6-rev2.tar.gz restore std toolprefix 2008-09-11 10:22:01 +00:00
xv6.pdf make pdf, ps, tarball 2008-09-03 14:05:52 +00:00
xv6.ps make pdf, ps, tarball 2008-09-03 14:05:52 +00:00
zombie.c delete unnecessary #include lines 2007-08-27 23:26:33 +00:00

README 

xv6 is a re-implementation of Dennis Ritchie's and Ken Thompson's Unix
Version 6 (v6).  xv6 loosely follows the structure and style of v6,
but is implemented for a modern x86-based multiprocessor using ANSI C.

ACKNOWLEDGMENTS

xv6 is inspired by John Lions's Commentary on UNIX 6th Edition (Peer
to Peer Communications; ISBN: 1-57398-013-7; 1st edition (June 14,
2000)). See also http://pdos.csail.mit.edu/6.828/2007/v6.html, which
provides pointers to on-line resources for v6.

xv6 borrows code from the following sources:
    JOS (asm.h, elf.h, mmu.h, bootasm.S, ide.c, console.c, and others)
    Plan 9 (bootother.S, mp.h, mp.c, lapic.c)
    FreeBSD (ioapic.c)
    NetBSD (console.c)

The following people made contributions:
    Russ Cox (context switching, locking)
    Cliff Frey (MP)
    Xiao Yu (MP)

The code in the files that constitute xv6 is
Copyright 2006-2007 Frans Kaashoek, Robert Morris, and Russ Cox.

ERROR REPORTS

If you spot errors or have suggestions for improvement, please send
email to Frans Kaashoek and Robert Morris (kaashoek,rtm@csail.mit.edu). 

BUILDING AND RUNNING XV6

To build xv6 on an x86 ELF machine (like Linux or FreeBSD), run "make".
On non-x86 or non-ELF machines (like OS X, even on x86), you will
need to install a cross-compiler gcc suite capable of producing x86 ELF
binaries.  See http://pdos.csail.mit.edu/6.828/2007/tools.html.
Then run "make TOOLPREFIX=i386-jos-elf-".

To run xv6, you can use Bochs or QEMU, both PC simulators.
Bochs makes debugging easier, but QEMU is much faster. 
To run in Bochs, run "make bochs" and then type "c" at the bochs prompt.
To run in QEMU, run "make qemu".  Both log the xv6 screen output to 
standard output.

To create a typeset version of the code, run "make xv6.pdf".
This requires the "mpage" text formatting utility.
See http://www.mesa.nl/pub/mpage/.