xv6-riscv

garentyler/xv6-riscv

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kaashoek 801affcd14 centralize credits

2006-09-03 15:10:33 +00:00

.cvsignore

Changes to allow use of native x86 ELF compilers, which on my

2006-07-11 01:07:40 +00:00

asm.h

centralize credits

2006-09-03 15:10:33 +00:00

bio.c

complain if no disk 1

2006-08-30 18:55:06 +00:00

bootasm.S

centralize credits

2006-09-03 15:10:33 +00:00

bootmain.c

uint32_t -> uint &c

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

bootother.S

centralize credits

2006-09-03 15:10:33 +00:00

buf.h

LRU disk cache replacement

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

cat.c

i/o redirection in sh

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

console.c

clean up stale error checks and panics

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

defs.h

complain if no disk 1

2006-08-30 18:55:06 +00:00

dev.h

init creates console, opens 0/1/2, runs sh

2006-08-11 13:55:18 +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

centralize credits

2006-09-03 15:10:33 +00:00

fcntl.h

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

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

fd.c

compiling, but untested dup

2006-08-20 03:33:01 +00:00

fd.h

fix race in holding() check in acquire()

2006-08-08 19:58:06 +00:00

fs.c

complain if no disk 1

2006-08-30 18:55:06 +00:00

fs.h

inode addrs[NDIRECT] -> NADDRS

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

fstests.c

clear killed flag in exit

2006-08-29 19:59:52 +00:00

fsvar.h

inode addrs[NDIRECT] -> NADDRS

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

ide.c

complain if no disk 1

2006-08-30 18:55:06 +00:00

init.c

prune unneeded panics and debug output

2006-08-29 19:06:37 +00:00

ioapic.c

fix iget() bug that allocated in-use inode[] entries

2006-08-13 15:51:58 +00:00

ioapic.h

better interrupt plan---this one appears to work

2006-08-04 18:12:31 +00:00

kalloc.c

complain if no disk 1

2006-08-30 18:55:06 +00:00

lapic.c

centralize credits

2006-09-03 15:10:33 +00:00

lgrind.sty

better printout

2006-08-29 17:50:19 +00:00

lgrindef

index for printout

2006-09-03 14:38:10 +00:00

ls.c

i/o redirection in sh

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

main.c

prune unneeded panics and debug output

2006-08-29 19:06:37 +00:00

Makefile

index for printout

2006-09-03 14:38:10 +00:00

mkdir.c

user-level programs: mkdir and rm

2006-08-14 21:22:13 +00:00

mkfs.c

fix writing the indirect block

2006-08-25 01:25:22 +00:00

mmu.h

centralize credits

2006-09-03 15:10:33 +00:00

mp.c

prune unneeded panics and debug output

2006-08-29 19:06:37 +00:00

mp.h

centralize credits

2006-09-03 15:10:33 +00:00

Notes

complain if no disk 1

2006-08-30 18:55:06 +00:00

param.h

clean up stale error checks and panics

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

picirq.c

wdir now uses readi/writei

2006-08-13 20:06:42 +00:00

pipe.c

interrupts could be recursive since lapic_eoi() called before rti

2006-08-10 22:08:14 +00:00

printf.c

user-level programs: mkdir and rm

2006-08-14 21:22:13 +00:00

proc.c

complain if no disk 1

2006-08-30 18:55:06 +00:00

proc.h

nits

2006-08-29 21:35:30 +00:00

README

centralize credits

2006-09-03 15:10:33 +00:00

rm.c

user-level programs: mkdir and rm

2006-08-14 21:22:13 +00:00

setjmp.S

rename swtch.S to setjmp.S

2006-07-16 15:40:51 +00:00

sh.c

clear killed flag in exit

2006-08-29 19:59:52 +00:00

sign.pl

import

2006-06-12 15:22:12 +00:00

spinlock.c

prune unneeded panics and debug output

2006-08-29 19:06:37 +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

complain if no disk 1

2006-08-30 18:55:06 +00:00

syscall.c

complain if no disk 1

2006-08-30 18:55:06 +00:00

syscall.h

i/o redirection in sh

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

trap.c

i broke sbrk, fix it

2006-08-29 17:01:40 +00:00

trapasm.S

prune unneeded panics and debug output

2006-08-29 19:06:37 +00:00

traps.h

timer interrupts

2006-06-28 16:35:03 +00:00

types.h

uint32_t -> uint &c

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

ulib.c

i/o redirection in sh

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

umalloc.c

kill user process when it generates an unhandled trap (e.g., 13)

2006-08-25 00:43:17 +00:00

user1.c

nitpicks

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

user.h

bug in sbrk

2006-08-24 19:24:36 +00:00

userfs.c

fix bugs in indirect-file code

2006-08-24 17:28:01 +00:00

usertests.c

prune unneeded panics and debug output

2006-08-29 19:06:37 +00:00

usys.S

i/o redirection in sh

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

vectors.pl

complain if no disk 1

2006-08-30 18:55:06 +00:00

x86.h

clean up stale error checks and panics

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

README

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

xv6 is inspired by the following work by Lions about Unix version 6:

- Lions' Commentary on UNIX' 6th Edition, John Lions, 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.

Code was used from the following sources:
    JOS (asm.h, elf.h, mmu.h, bootasm.S, ide.c, and others)
    Plan 9 (bootother.S, mp.h, mp.c, ioapic.h, lapic.c)
    FreeBSD (ioapic.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%