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Robert Morris faad047ab2 change some comments, maybe more informative
delete most comments from bootother.S (since copy of bootasm.S)
ksegment() -> seginit()
move more stuff from main() to mainc()
2010-09-13 15:34:44 -04:00
web another rev2 -> rev3 2010-02-06 16:08:06 -05:00
.cvsignore
.gdbinit.tmpl Use the symbol file 2009-09-20 23:08:36 -04:00
.gitignore ignore .gitignore 2009-09-15 17:21:02 -04:00
asm.h add some comments 2010-08-05 21:16:55 -04:00
bio.c a few nits 2010-07-23 12:52:50 -04:00
bootasm.S change some comments, maybe more informative 2010-09-13 15:34:44 -04:00
bootmain.c
bootother.S change some comments, maybe more informative 2010-09-13 15:34:44 -04:00
buf.h
BUGS
cat.c
console.c Get consoleintr back on one page 2010-09-02 18:54:50 -04:00
cuth
defs.h change some comments, maybe more informative 2010-09-13 15:34:44 -04:00
dot-bochsrc
echo.c
elf.h shuffle and tweak for formatting. 2009-08-08 01:07:30 -07:00
exec.c Simplify allocuvm/deallocuvm to operate in a contiguous memory model. This makes their interface match up better with proc->sz and also simplifies the callers (it even gets the main body of exec on one page). 2010-09-02 18:28:36 -04:00
fcntl.h
file.c Initial version of single-cpu xv6 with page tables 2010-07-02 14:51:53 -04:00
file.h shuffle and tweak for formatting. 2009-08-08 01:07:30 -07:00
forktest.c Initial version of single-cpu xv6 with page tables 2010-07-02 14:51:53 -04:00
fs.c Comment typo 2009-10-24 21:31:01 -04:00
fs.h
gdbutil GDB utilities 2009-11-23 17:47:57 -05:00
grep.c
ide.c Initial version of single-cpu xv6 with page tables 2010-07-02 14:51:53 -04:00
init.c
initcode.S
ioapic.c
kalloc.c Merge branch 'master' of git+ssh://amsterdam.csail.mit.edu/home/am0/6.828/xv6 2010-08-31 19:21:52 -04:00
kbd.c
kbd.h
kill.c
lapic.c kill TLB shoot down code 2010-07-28 14:38:05 -04:00
LICENSE
ln.c
ls.c
LucidaSans-Typewriter83
main.c change some comments, maybe more informative 2010-09-13 15:34:44 -04:00
Makefile Rev 4 2010-09-03 15:47:28 -04:00
mkdir.c
mkfs.c Hopefully get the printf size spec right, regardless of compiler. 2010-08-31 16:01:38 -04:00
mmu.h Page breaking of mmu.h 2010-08-31 16:54:50 -04:00
mp.c Initial version of single-cpu xv6 with page tables 2010-07-02 14:51:53 -04:00
mp.h
Notes
param.h kalloc/kfree now only a page at a time 2010-08-31 12:54:47 -04:00
picirq.c Get rid of the blank page in picirq.c. It misaligs things now. 2010-09-02 18:36:06 -04:00
pipe.c kalloc/kfree now only a page at a time 2010-08-31 12:54:47 -04:00
pr.pl remove //DOC in the right place 2009-07-12 19:07:30 -07:00
printf.c
proc.c change some comments, maybe more informative 2010-09-13 15:34:44 -04:00
proc.h change some comments, maybe more informative 2010-09-13 15:34:44 -04:00
README Add Nickolai and myself and scrunch two lines out of the text elsewhere 2010-09-02 03:25:33 -04:00
rm.c
runoff Remove unused nop_pause function. 2010-09-02 14:08:45 -04:00
runoff.list Re-re-arrange bootasm and bootother. We can't get bootasm and bootmain on the same page, but this will make them easier to flip between. 2010-09-02 04:06:35 -04:00
runoff.spec Get rid of the blank page in picirq.c. It misaligs things now. 2010-09-02 18:36:06 -04:00
runoff1 remove //DOC in the right place 2009-07-12 19:07:30 -07:00
sh.c move jkstack to main.c 2010-08-05 14:15:03 -04:00
show1
sign.pl
sleep1.p
spinlock.c change some comments, maybe more informative 2010-09-13 15:34:44 -04:00
spinlock.h assorted fixes: 2009-08-30 23:02:08 -07:00
spinp
stat.h
stressfs.c Space police 2010-09-01 00:41:25 -04:00
string.c Remove memcpy prototypes at Russ' request to prevent code from calling 2009-10-07 13:06:55 -04:00
swtch.S move jkstack to main.c 2010-08-05 14:15:03 -04:00
symlink.patch
syscall.c Remove the stack guard page. Processes are now contiguous from 0 to proc->sz, which means our syscall argument validation is correct. Add a pointer validation test and remove the stack test, which tested for the guard page. 2010-09-01 16:46:37 -04:00
syscall.h uptime() sys call for benchmarking 2010-08-11 14:34:45 -04:00
sysfile.c Initial version of single-cpu xv6 with page tables 2010-07-02 14:51:53 -04:00
sysproc.c uptime() sys call for benchmarking 2010-08-11 14:34:45 -04:00
timer.c shuffle and tweak for formatting. 2009-08-08 01:07:30 -07:00
toc.ftr Update example in TOC footer 2010-09-02 19:03:48 -04:00
toc.hdr
trap.c Tab police 2010-09-01 00:32:27 -04:00
trapasm.S
traps.h kill TLB shoot down code 2010-07-28 14:38:05 -04:00
TRICKS more doc tweaks 2009-07-12 18:33:37 -07:00
types.h some cleanup 2010-07-25 20:30:21 -04:00
uart.c shuffle and tweak for formatting. 2009-08-08 01:07:30 -07:00
ulib.c
umalloc.c kalloc/kfree now only a page at a time 2010-08-31 12:54:47 -04:00
user.h set only PG and WP in vminit; the rest don't seem to be needed and are confusing 2010-08-30 06:38:58 -04:00
usertests.c Remove the stack guard page. Processes are now contiguous from 0 to proc->sz, which means our syscall argument validation is correct. Add a pointer validation test and remove the stack test, which tested for the guard page. 2010-09-01 16:46:37 -04:00
usys.S uptime() sys call for benchmarking 2010-08-11 14:34:45 -04:00
vectors.pl
vm.c change some comments, maybe more informative 2010-09-13 15:34:44 -04:00
wc.c
x86.h Remove unused nop_pause function. 2010-09-02 14:08:45 -04:00
xv6-rev0.tar.gz
xv6-rev1.tar.gz
xv6-rev2.tar.gz
xv6-rev3.tar.gz add .gdbinit.tmpl to dist 2009-09-15 19:15:59 -04:00
xv6-rev4.tar.gz Rev 4 2010-09-03 15:47:28 -04:00
zombie.c

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)
    Nickolai Zeldovich
    Austin Clements

In addition, we are grateful for the patches contributed by Greg
Price, Yandong Mao, and Hitoshi Mitake.

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".

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