xv6-riscv

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kaashoek f70172129c run without lapic and ioapic, if they are not present

if no lapic available, use 8253pit for clock
now xv6 runs both on qemu (uniprocessor) and bochs (uniprocessor and MP)

2006-09-07 01:37:58 +00:00

.cvsignore

New formatting scripts.

2006-09-05 15:50:55 +00:00

8253pit.c

run without lapic and ioapic, if they are not present

2006-09-07 01:37:58 +00:00

asm.h

wrap long lines

2006-09-06 19:08:14 +00:00

bio.c

wrap long lines

2006-09-06 19:08:14 +00:00

bootasm.S

wrap long lines

2006-09-06 19:08:14 +00:00

bootmain.c

wrap long lines

2006-09-06 19:08:14 +00:00

bootother.S

wrap long lines

2006-09-06 19:08:14 +00:00

buf.h

LRU disk cache replacement

2006-08-12 22:34:13 +00:00

cat.c

standardize various * conventions

2006-09-06 17:27:19 +00:00

console.c

run without lapic and ioapic, if they are not present

2006-09-07 01:37:58 +00:00

defs.h

run without lapic and ioapic, if they are not present

2006-09-07 01:37:58 +00:00

dev.h

standardize various * conventions

2006-09-06 17:27:19 +00:00

dot-bochsrc

update

2006-07-26 10:17:39 +00:00

echo.c

i/o redirection in sh

2006-08-23 01:09:24 +00:00

elf.h

more tabs go away

2006-09-06 17:53:15 +00:00

fcntl.h

low-level keyboard input (not hooked up to /dev yet)

2006-08-10 02:07:10 +00:00

file.c

fd_* => file_*

2006-09-06 18:43:45 +00:00

file.h

fd.* -> file.*

2006-09-06 18:40:28 +00:00

fs.c

wrap long lines

2006-09-06 19:08:14 +00:00

fs.h

inode addrs[NDIRECT] -> NADDRS

2006-08-25 01:11:30 +00:00

fstests.c

standardize various * conventions

2006-09-06 17:27:19 +00:00

fsvar.h

inode addrs[NDIRECT] -> NADDRS

2006-08-25 01:11:30 +00:00

ide.c

run without lapic and ioapic, if they are not present

2006-09-07 01:37:58 +00:00

init.c

for vs while

2006-09-06 18:47:51 +00:00

ioapic.c

run without lapic and ioapic, if they are not present

2006-09-07 01:37:58 +00:00

ioapic.h

wrap long lines

2006-09-06 19:08:14 +00:00

kalloc.c

writeable => writable

2006-09-06 18:06:04 +00:00

lapic.c

run without lapic and ioapic, if they are not present

2006-09-07 01:37:58 +00:00

ls.c

wrap long lines

2006-09-06 19:08:14 +00:00

main.c

run without lapic and ioapic, if they are not present

2006-09-07 01:37:58 +00:00

Makefile

run without lapic and ioapic, if they are not present

2006-09-07 01:37:58 +00:00

mkdir.c

standardize various * conventions

2006-09-06 17:27:19 +00:00

mkfs.c

standardize various * conventions

2006-09-06 17:27:19 +00:00

mmu.h

wrap long lines

2006-09-06 19:08:14 +00:00

mp.c

run without lapic and ioapic, if they are not present

2006-09-07 01:37:58 +00:00

mp.h

wrap long lines

2006-09-06 19:08:14 +00:00

Notes

nit in console interrupts

2006-09-07 00:00:33 +00:00

param.h

struct fd -> struct file

2006-09-06 18:38:56 +00:00

picirq.c

run without lapic and ioapic, if they are not present

2006-09-07 01:37:58 +00:00

pipe.c

fd_* => file_*

2006-09-06 18:43:45 +00:00

printf.c

no /* */ comments

2006-09-06 17:50:20 +00:00

proc.c

fd_* => file_*

2006-09-06 18:43:45 +00:00

proc.h

struct fd -> struct file

2006-09-06 18:38:56 +00:00

README

nits

2006-09-04 11:52:36 +00:00

rm.c

standardize various * conventions

2006-09-06 17:27:19 +00:00

runoff

runoff fixes

2006-09-06 19:43:59 +00:00

runoff.list

run without lapic and ioapic, if they are not present

2006-09-07 01:37:58 +00:00

setjmp.S

runoff tweaks

2006-09-06 19:22:24 +00:00

sh.c

what is NULL?

2006-09-06 18:21:54 +00:00

sign.pl

spacing fixes: no tabs, 2-space indents (for rtm)

2006-09-06 17:04:06 +00:00

spinlock.c

wrap long lines

2006-09-06 19:08:14 +00:00

spinlock.h

clean up stale error checks and panics

2006-08-29 14:45:45 +00:00

stat.h

fstat

2006-08-12 04:33:50 +00:00

string.c

standardize various * conventions

2006-09-06 17:27:19 +00:00

syscall.c

for vs while

2006-09-06 18:47:51 +00:00

syscall.h

struct fd -> struct file

2006-09-06 18:38:56 +00:00

sysfile.c

wrap long lines

2006-09-06 19:08:14 +00:00

sysproc.c

fd.* -> file.*

2006-09-06 18:40:28 +00:00

trap.c

wrap long lines

2006-09-06 19:08:14 +00:00

trapasm.S

standardize various * conventions

2006-09-06 17:27:19 +00:00

traps.h

run without lapic and ioapic, if they are not present

2006-09-07 01:37:58 +00:00

types.h

uint32_t -> uint &c

2006-07-20 09:07:53 +00:00

ulib.c

break single-line if statements

2006-09-06 17:57:47 +00:00

umalloc.c

standardize various * conventions

2006-09-06 17:27:19 +00:00

user1.c

nitpicks

2006-07-17 01:25:22 +00:00

user.h

standardize various * conventions

2006-09-06 17:27:19 +00:00

userfs.c

wrap long lines

2006-09-06 19:08:14 +00:00

usertests.c

standardize various * conventions

2006-09-06 17:27:19 +00:00

usys.S

standardize various * conventions

2006-09-06 17:27:19 +00:00

vectors.pl

no /* */ comments

2006-09-06 17:50:20 +00:00

x86.h

no /* */ comments

2006-09-06 17:50:20 +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.

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/6.828/2006/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)

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.

Languages

C 51.3%

Rust 43.4%

Assembly 2.6%

Makefile 2.5%

Perl 0.2%