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2007-08-24 20:20:23 +00:00
.cvsignore
8253pit.c
asm.h
bio.c nits 2007-08-24 19:46:19 +00:00
bootasm.S bring bootasm and bootother more in sync 2007-08-24 19:25:52 +00:00
bootmain.c add missing iput() at end of _namei() 2007-08-24 14:56:17 +00:00
bootother.S bring bootasm and bootother more in sync 2007-08-24 19:25:52 +00:00
buf.h simplify ide queuing 2007-08-24 19:32:36 +00:00
BUGS tweaks 2007-08-22 06:20:10 +00:00
cat.c Remove puts in favor of printf. 2007-08-24 20:03:40 +00:00
console.c fixes 2007-08-14 19:41:01 +00:00
defs.h simplify ide queuing 2007-08-24 19:32:36 +00:00
dev.h
dot-bochsrc
echo.c Remove puts in favor of printf. 2007-08-24 20:03:40 +00:00
elf.h
exec.c PDF at http://am.lcs.mit.edu/~rsc/xv6.pdf 2007-08-22 06:01:32 +00:00
fcntl.h
file.c PDF at http://am.lcs.mit.edu/~rsc/xv6.pdf 2007-08-22 06:01:32 +00:00
file.h PDF at http://am.lcs.mit.edu/~rsc/xv6.pdf 2007-08-22 06:01:32 +00:00
forktest.c test that fork fails gracefully 2007-08-24 20:20:23 +00:00
fs.c nits 2007-08-24 19:46:19 +00:00
fs.h comment nits 2007-08-24 19:52:49 +00:00
fsvar.h comment nits 2007-08-24 19:52:49 +00:00
ide.c comment nits 2007-08-24 19:52:49 +00:00
init.c Remove puts in favor of printf. 2007-08-24 20:03:40 +00:00
initcode.S finish comments 2007-08-24 19:37:24 +00:00
ioapic.c
ioapic.h
kalloc.c simplify ide queuing 2007-08-24 19:32:36 +00:00
kbd.h formatting; split kbd constants into kbd.h 2007-08-14 19:31:16 +00:00
kill.c
lapic.c
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 tweak 2007-08-24 19:36:52 +00:00
Makefile test that fork fails gracefully 2007-08-24 20:20:23 +00:00
mkdir.c
mkfs.c add missing iput() at end of _namei() 2007-08-24 14:56:17 +00:00
mmu.h formatting 2007-08-14 19:41:38 +00:00
mp.c
mp.h
Notes
param.h simplify ide queuing 2007-08-24 19:32:36 +00:00
picirq.c
pipe.c
pr.pl
printf.c
proc.c Use parent pointer instead of ppid. 2007-08-23 14:40:30 +00:00
proc.h add missing iput() at end of _namei() 2007-08-24 14:56:17 +00:00
README
rm.c
runoff add missing iput() at end of _namei() 2007-08-24 14:56:17 +00:00
runoff.list tweaks 2007-08-22 06:20:10 +00:00
runoff.spec PDF at http://am.lcs.mit.edu/~rsc/xv6.pdf 2007-08-22 06:01:32 +00:00
runoff1 PDF at http://am.lcs.mit.edu/~rsc/xv6.pdf 2007-08-22 06:01:32 +00:00
setjmp.S
sh.c Remove puts in favor of printf. 2007-08-24 20:03:40 +00:00
show1 PDF at http://am.lcs.mit.edu/~rsc/xv6.pdf 2007-08-22 06:01:32 +00:00
sign.pl
spinlock.c Reorder spinlock.c: acquire and release first 2007-08-24 20:06:14 +00:00
spinlock.h
stat.h
string.c Various cleanup: 2007-08-21 19:22:08 +00:00
syscall.c Add yield system call, for zombie test program (bad idea?). 2007-08-24 20:04:53 +00:00
syscall.h Add yield system call, for zombie test program (bad idea?). 2007-08-24 20:04:53 +00:00
sysfile.c PDF at http://am.lcs.mit.edu/~rsc/xv6.pdf 2007-08-22 06:01:32 +00:00
sysproc.c Add yield system call, for zombie test program (bad idea?). 2007-08-24 20:04:53 +00:00
toc.ftr
toc.hdr
trap.c PDF at http://am.lcs.mit.edu/~rsc/xv6.pdf 2007-08-22 06:01:32 +00:00
trapasm.S PDF at http://am.lcs.mit.edu/~rsc/xv6.pdf 2007-08-22 06:01:32 +00:00
traps.h
types.h
ulib.c Remove puts in favor of printf. 2007-08-24 20:03:40 +00:00
umalloc.c
user.h Remove puts in favor of printf. 2007-08-24 20:03:40 +00:00
usertests.c test that fork fails gracefully 2007-08-24 20:20:23 +00:00
usys.S Add yield system call, for zombie test program (bad idea?). 2007-08-24 20:04:53 +00:00
vectors.pl PDF at http://am.lcs.mit.edu/~rsc/xv6.pdf 2007-08-22 06:01:32 +00:00
x86.h comment what +m means; omit needless __ 2007-08-24 00:34:54 +00:00
xv6-rev0.tar.gz
xv6.pdf
xv6.ps
zombie.c Add yield system call, for zombie test program (bad idea?). 2007-08-24 20:04:53 +00:00

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.

ACKNOWLEDGEMENTS

xv6 is inspired by John Lions' 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, ioapic.h, 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 are 
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).  This version is the very first one,
so don't be surprised if there are errors or the code is unclear.

BUIDLING 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/.