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Port of Xv6 for 25∞2
610 commits 1 branch 0 tags 18 MiB
C 94.5%
Assembly 3.4%
Makefile 1.9%
Perl 0.2%
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Frans Kaashoek b738a4f1a2 kill TLB shoot down code
2010-07-28 14:38:05 -04:00
web another rev2 -> rev3 2010-02-06 16:08:06 -05:00
.cvsignore update .cvsignore 2008-10-15 04:54:24 +00:00
.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 continuous quality management 2007-08-31 19:55:27 +00:00
bio.c a few nits 2010-07-23 12:52:50 -04:00
bootasm.S Initial version of single-cpu xv6 with page tables 2010-07-02 14:51:53 -04:00
bootmain.c xv6: boot loader adjustments 2009-03-08 21:41:30 +00:00
bootother.S 8ae0 instead of 8e00, thanks yandong 2009-12-01 14:07:12 -05:00
buf.h Another attempt at the bio.c comment. 2007-08-27 14:09:30 +00:00
BUGS sh 2007-09-05 15:55:43 +00:00
cat.c more consistent spacing 2007-08-28 18:32:08 +00:00
console.c Handle backspace on serial input and output better. Better solutions are welcome. 2009-09-30 22:32:50 -04:00
cuth delete unnecessary #include lines 2007-08-27 23:26:33 +00:00
defs.h kill TLB shoot down code 2010-07-28 14:38:05 -04:00
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 shuffle and tweak for formatting. 2009-08-08 01:07:30 -07:00
exec.c a few nits 2010-07-23 12:52:50 -04:00
fcntl.h nit 2007-08-28 04:13:24 +00:00
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 drop NADDRS and INDIRECT; too many names 2009-05-31 00:59:37 +00:00
gdbutil GDB utilities 2009-11-23 17:47:57 -05:00
grep.c add grep; add lost echo 2007-08-28 04:26:34 +00:00
ide.c Initial version of single-cpu xv6 with page tables 2010-07-02 14:51:53 -04:00
init.c group locks into structs they protect. 2009-05-31 05:12:21 +00:00
initcode.S rearrangements and cleanup for text 2009-07-11 19:26:01 -07:00
ioapic.c trap cleanup 2009-07-11 19:24:56 -07:00
kalloc.c a few nits 2010-07-23 12:52:50 -04:00
kbd.c be consistent: no underscores in function names 2009-03-08 22:07:13 +00:00
kbd.h formatting; split kbd constants into kbd.h 2007-08-14 19:31:16 +00:00
kill.c tab police 2009-05-31 00:39:17 +00:00
lapic.c kill TLB shoot down code 2010-07-28 14:38:05 -04:00
LICENSE Add MIT license file; update xv6-rev2.tar.gz with LICENSE. 2009-05-26 16:58:33 +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
LucidaSans-Typewriter83 add nice font 2008-08-20 18:00:24 +00:00
main.c Checkpoint page-table version for SMP 2010-07-23 07:41:13 -04:00
Makefile Initial version of single-cpu xv6 with page tables 2010-07-02 14:51:53 -04:00
mkdir.c more consistent spacing 2007-08-28 18:32:08 +00:00
mkfs.c drop NADDRS and INDIRECT; too many names 2009-05-31 00:59:37 +00:00
mmu.h some cleanup 2010-07-25 20:30:21 -04:00
mp.c Initial version of single-cpu xv6 with page tables 2010-07-02 14:51:53 -04:00
mp.h Simplify MP hardware code. 2007-08-27 22:53:31 +00:00
Notes nit in console interrupts 2006-09-07 00:00:33 +00:00
param.h Initial version of single-cpu xv6 with page tables 2010-07-02 14:51:53 -04:00
picirq.c shuffle and tweak for formatting. 2009-08-08 01:07:30 -07:00
pipe.c assorted fixes: 2009-08-30 23:02:08 -07:00
pr.pl remove //DOC in the right place 2009-07-12 19:07:30 -07:00
printf.c spaces around else for rtm 2007-08-28 18:37:41 +00:00
proc.c some cleanup 2010-07-25 20:30:21 -04:00
proc.h Initial version of single-cpu xv6 with page tables 2010-07-02 14:51:53 -04:00
README spelling 2007-08-29 18:18:57 +00:00
rm.c more consistent spacing 2007-08-28 18:32:08 +00:00
runoff shuffle and tweak for formatting. 2009-08-08 01:07:30 -07:00
runoff.list add uart.c 2009-09-15 19:15:48 -04:00
runoff.spec shuffle and tweak for formatting. 2009-08-08 01:07:30 -07:00
runoff1 remove //DOC in the right place 2009-07-12 19:07:30 -07:00
sh.c Initial version of single-cpu xv6 with page tables 2010-07-02 14:51:53 -04:00
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 nits 2010-07-02 17:45:37 -04:00
spinlock.h assorted fixes: 2009-08-30 23:02:08 -07:00
spinp Model verifying that wakeup really 2007-10-12 04:21:04 +00:00
stat.h move T_DIR etc into stat.h; move type up 2009-05-31 00:26:10 +00:00
stressfs.c Add the test we used in lecture to creash the IDE system when the 2009-11-23 17:27:26 -05:00
string.c Remove memcpy prototypes at Russ' request to prevent code from calling 2009-10-07 13:06:55 -04:00
swtch.S Initial version of single-cpu xv6 with page tables 2010-07-02 14:51:53 -04:00
symlink.patch symlink implementation 2007-08-30 18:36:38 +00:00
syscall.c nits 2010-07-02 17:45:37 -04:00
syscall.h Replace yield system call with sleep. 2007-08-27 13:34:35 +00:00
sysfile.c Initial version of single-cpu xv6 with page tables 2010-07-02 14:51:53 -04:00
sysproc.c assorted fixes: 2009-08-30 23:02:08 -07:00
timer.c shuffle and tweak for formatting. 2009-08-08 01:07:30 -07:00
toc.ftr assorted fixes: 2009-08-30 23:02:08 -07:00
toc.hdr nits 2007-08-28 18:23:48 +00:00
trap.c kill TLB shoot down code 2010-07-28 14:38:05 -04:00
trapasm.S initproc, usegment, swtch tweaks 2009-07-11 19:28:29 -07:00
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 xv6: use stosb for memset 2009-03-08 21:38:30 +00:00
umalloc.c spaces around else for rtm 2007-08-28 18:37:41 +00:00
user.h Remove memcpy prototypes at Russ' request to prevent code from calling 2009-10-07 13:06:55 -04:00
usertests.c group locks into structs they protect. 2009-05-31 05:12:21 +00:00
usys.S usys.S: put before init.c, STUB -> SYSCALL 2009-05-31 02:14:04 +00:00
vectors.pl sync with c; .text is implied 2009-05-31 01:00:38 +00:00
vm.c kill TLB shoot down code 2010-07-28 14:38:05 -04:00
wc.c more consistent spacing 2007-08-28 18:32:08 +00:00
x86.h Checkpoint page-table version for SMP 2010-07-23 07:41:13 -04:00
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 Add MIT license file; update xv6-rev2.tar.gz with LICENSE. 2009-05-26 16:58:33 +00:00
xv6-rev3.tar.gz add .gdbinit.tmpl to dist 2009-09-15 19:15:59 -04:00
xv6.pdf new pdf 2009-09-03 00:46:28 -07:00
xv6.ps new pdf 2009-09-03 00:46:28 -07:00
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/.