Hello everybody:
I'm doing an OS for X86. This has been brewing since March, I'd like any feedback on things people like/dislike in Linux. as my OS resembles it somewhat.
A tiny operate system has work on i386. I'll add more features like virtual file-system, virtual memory and general device driver.
BTW, it's only a toy (just a hobby), I only want to know machanism of linux, and won't be big and professional like Linux.
Buddy ([email protected]) ^_^
OS information:
Item | contents |
---|---|
OS Name | BiscuitOS |
Release Version | V0.0.1 |
Target Platform | I386(X86 family) |
Emulator | Qemu |
Memory limit | 16 M |
Disk | Floppy |
Rootfs | none |
Host Machine | Ubuntu16.04 |
Paging | Support |
Segmenting | Support |
Bit | 32-bit |
This OS running on X86 machine, if you don't have X86 machine, you
can use X86 emulator to run OS. This OS have ran on qemu
, qemu
is
an useful X86 emulator to emulate environment of X86. Please follow
specific steps to make it work.
- Install essential tools
```
sudo apt-get install qemu
sudo apt-get install figlet gcc make gdb git
```
If you use 64 bit system, please install 32 bit library.
```
sudo apt-get install lib32z1 lib32z1-dev
```
- Download source code
Download souce code from github, please connect network first.
```
git clone https://github.com/BuddyZhang1/BiscuitOS.git
```
- Comple BiscuitOS
```
make clean
make
make start
```
- Debug BiscuitOS
If you want to debug BiscuitOS, please open debug macro on top Makefile.
```
vi */BiscuitOS/Makefile
--- DEBUG :=
+++ DEBUG := 1
```
Then, recompile source code.
```
make clean
make
```
Now, we can start to debug OS.
On Host:
```
make debug
```
On Target:
You can utilize `gdb` to single debug and so on. follow these steps:
```
gdb tools/build/system
(gdb)target remote :1234
(gdb)b main
(gdb)c
(gdb)n
or
(gdb)s
```
You can also utilize `objdump` to get more useful information, such as:
```
objdump -x -s -S -dh tools/build/system
```
If you want to debug `bootsect.s` and `setup.s`, you should follow
these steps:
```
gdb tools/build/.debug_bootsect
or
gdb tools/build/.debug_setup
(gdb)target remote :1234
(gdb)b *0x7C00
(gdb)c
(gdb)d
(gdb)(delete break?)y
(gdb)ni
or
(gdb)si
```
You can also uitlize `objdump` to get more useful information,like:
```
objdump -x -s -S -dh tools/build/.debug_bootsect
```
I have collected more useful documentions, you can access my github to get it. The github link:
https://github.com/BuddyZhang1/Book-Segment
If you have any new source code or problem, you can send email to me. This is my frequently used email:
Software is like sex. It's better when it's free
--- Linus Torvalds