Bricoles/xv6-riscv

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rsc 1133b215d8 more defensive programming		2006-09-07 01:56:22 +00:00
.cvsignore
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
cat.c
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
dot-bochsrc
echo.c
elf.h
fcntl.h
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
fstests.c
fsvar.h
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
mkfs.c
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
proc.c	more defensive programming	2006-09-07 01:56:22 +00:00
proc.h	struct fd -> struct file	2006-09-06 18:38:56 +00:00
README
rm.c
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
spinlock.c	wrap long lines	2006-09-06 19:08:14 +00:00
spinlock.h
stat.h
string.c
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
traps.h	run without lapic and ioapic, if they are not present	2006-09-07 01:37:58 +00:00
types.h
ulib.c	break single-line if statements	2006-09-06 17:57:47 +00:00
umalloc.c
user.h
user1.c
userfs.c	wrap long lines	2006-09-06 19:08:14 +00:00
usertests.c
usys.S
vectors.pl
x86.h

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.