xv6-65oo2

Port of Xv6 for 25∞2

unix xv6

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Frans Kaashoek 8ffdfad990 Add s to many printf statements that expect it (thanks Cece Chu) Add dirtest to the list of tests		2020-10-03 16:36:20 -04:00
kernel	When either_copyin/out fails, return an error from write/read	2020-10-03 16:36:20 -04:00
mkfs	separate source into kernel/ user/ mkfs/	2019-06-11 09:57:14 -04:00
user	Add s to many printf statements that expect it (thanks Cece Chu)	2020-10-03 16:36:20 -04:00
.dir-locals.el	Setting indent-tabs-mode nil everywhere is dangerous	2011-09-05 15:22:16 -04:00
.editorconfig	Clean up linker script	2019-10-21 22:27:18 -04:00
.gdbinit.tmpl-riscv	set architecture riscv:rv64 -- fix gdb trampoline disassembly, thanks jonathan	2019-09-12 10:48:48 -04:00
.gitignore	Introduce alloc3_desc and UsedArea to make code easier to read	2019-07-01 08:20:35 -04:00
LICENSE	x	2019-07-24 09:06:49 -04:00
Makefile	Delete some obselete stuff	2020-08-21 11:00:45 -04:00
README	copyright and 6.S081	2020-08-10 19:41:57 -04:00

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 RISC-V 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 https://pdos.csail.mit.edu/6.828/, which
provides pointers to on-line resources for v6.

The following people have made contributions: Russ Cox (context switching,
locking), Cliff Frey (MP), Xiao Yu (MP), Nickolai Zeldovich, and Austin
Clements.

We are also grateful for the bug reports and patches contributed by
Silas Boyd-Wickizer, Anton Burtsev, Dan Cross, Cody Cutler, Mike CAT,
Tej Chajed, Asami Doi, eyalz800, , Nelson Elhage, Saar Ettinger, Alice
Ferrazzi, Nathaniel Filardo, Peter Froehlich, Yakir Goaron,Shivam
Handa, Bryan Henry, jaichenhengjie, Jim Huang, Alexander Kapshuk,
Anders Kaseorg, kehao95, Wolfgang Keller, Jonathan Kimmitt, Eddie
Kohler, Austin Liew, Imbar Marinescu, Yandong Mao, Matan Shabtay,
Hitoshi Mitake, Carmi Merimovich, Mark Morrissey, mtasm, Joel Nider,
Greg Price, Ayan Shafqat, Eldar Sehayek, Yongming Shen, Fumiya
Shigemitsu, Takahiro, Cam Tenny, tyfkda, Rafael Ubal, Warren Toomey,
Stephen Tu, Pablo Ventura, Xi Wang, Keiichi Watanabe, Nicolas
Wolovick, wxdao, Grant Wu, Jindong Zhang, Icenowy Zheng, and Zou Chang
Wei.

The code in the files that constitute xv6 is
Copyright 2006-2020 Frans Kaashoek, Robert Morris, and Russ Cox.

ERROR REPORTS

Please send errors and suggestions to Frans Kaashoek and Robert Morris
(kaashoek,rtm@mit.edu). The main purpose of xv6 is as a teaching
operating system for MIT's 6.S081, so we are more interested in
simplifications and clarifications than new features.

BUILDING AND RUNNING XV6

You will need a RISC-V "newlib" tool chain from
https://github.com/riscv/riscv-gnu-toolchain, and qemu compiled for
riscv64-softmmu. Once they are installed, and in your shell
search path, you can run "make qemu".