Linux-0.11

The old Linux kernel source ver 0.11 which has been tested under modern Linux, Mac OSX.

• 2008-10-15, falcon wuzhangjin@gmail.com
• 2011-07-31, tigercn moonlight.yang@gmail.com
• 2012-04-30, yuanxinyu yuanxinyu.hangzhou@gmail.com
• 2015-03-15, falcon wuzhangjin@gmail.com

Build on Linux

Linux Setup

• A linux distribution: debian, ubuntu and mint are recommended

• Some tools: gcc gdb qemu cscope ctags cflow graphviz

  $ apt-get install vim cscope exuberant-ctags build-essential qemu

Optional (bochs emulator instead of qemu)

$ sudo apt-get install bochs vgabios bochsbios bochs-doc bochs-x libltdl7 bochs-sdl bochs-term
$ sudo apt-get install graphviz cflow

$ echo bochs > tools/vm.cfg       // switch to use bochs
$ echo qemu > tools/vm.cfg        // switch back to use qemu

hack linux-0.11

$ make help		// get help
$ make  		// compile
$ make start-hd	// boot it on qemu with hard disk image
$ make debug-hd	// debug it via qemu & gdb, you'd start gdb to connect it.

$ gdb images/kernel.sym -tui
(gdb) target remote :1234
(gdb) b main
(gdb) c

                    // to debug the bootsect or setup part, please load the symbol files
$ gdb boot/bootsect.sym
$ gdb boot/setup.sym

Optional

$ echo "add-auto-load-safe-path $PWD/.gdbinit" > ~/.gdbinit  // let gdb auto load the commands in .gdbinit

Build on Mac OS X

Mac OS X Setup

• Install xcode from "App Store"

• Install Mac package manage tool: MacPorts from http://www.macports.org/install.php

  • Check your OS X version from "About This Mac", for example, Lion

  • Go to the "Mac OS X Package (.pkg) Installer" part and download the corresponding version

  • Self update MacPorts

    $ xcode-select -switch /Applications/Xcode.app/Contents/Developer $ sudo port -v selfupdate

• Install cross compiler gcc and binutils

  $ sudo port install qemu

• Install qemu

  $ sudo port install i386-elf-binutils i386-elf-gcc

• Install graphviz and cflow

  $ sudo port install GraphViz $ sudo port install cflow

• Install gdb. 'Cause port doesn't provide i386-elf-gdb, use the pre-compiled tools/mac/gdb.xz or download its source and compile it.

  $ cd tools/mac/ ; tar Jxf gdb.xz

Optional

$ sudo port install cscope
$ sudo port install ctags

$ wget ftp://ftp.gnu.org/gnu/gdb/gdb-7.4.tar.bz2
$ tar -xzvf gdb-7.4.tar.bz2
$ cd gdb-7.4
$ ./configure --target=i386-elf
$ make

hack linux-0.11

same as section 1.2