https://github.com/embeddedos/x86-64-operatingsystem
An Operating System based on x86-64 architecture.
https://github.com/embeddedos/x86-64-operatingsystem
assembly bios bootloader c cpp kernel operating-system qemu round-robin-scheduler shell systemcalls x86-64
Last synced: about 1 month ago
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An Operating System based on x86-64 architecture.
- Host: GitHub
- URL: https://github.com/embeddedos/x86-64-operatingsystem
- Owner: EmbeddedOS
- Created: 2023-05-02T04:55:15.000Z (about 2 years ago)
- Default Branch: main
- Last Pushed: 2024-07-30T11:40:17.000Z (10 months ago)
- Last Synced: 2025-03-30T05:41:14.315Z (2 months ago)
- Topics: assembly, bios, bootloader, c, cpp, kernel, operating-system, qemu, round-robin-scheduler, shell, systemcalls, x86-64
- Language: C
- Homepage:
- Size: 328 KB
- Stars: 4
- Watchers: 1
- Forks: 2
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# x86-64 Operating System
An Operating System based on x86-64 architecture.
## 1. Make a blank hard disk image
- Before building our OS and make final image, we need a blank hard disk image, We will use `bximage` to make it with:
- Size 100 megabytes.
- Sector size is 512 bytes.
- Kind of image is `flat`.
- this is done by run [image.sh](image.sh) script, the output image is `boot.img` file.
## 2. Build the OS
- The OS using make to build final image.
## 3. Simulate the OS
- To simulate the OS, we can use Bochs x86 Emulator 2.7, first generate a bochs configuration file (this is done automatically by run [image.sh](image.sh) script). And then, `make` to build our OS. And finally run `bochs` command to start simulating.
- The second option to simulate our OS is using QEMU, after build our OS with `make`, simply run command: `qemu-system-x86_64 -cpu qemu64,pdpe1gb -hda boot.img`
## 4. Mount the OS image to your computer
```bash
mount -t vfat boot.img /mnt/d/
```
## 5. Test the OS
- Build & Mount image to the OS & Running:
```bash
make run
```
- System booting look like:
- List files in root directory with `ls` command:
```shell
ls.bin
```
- You can create, edit, delete files on the image via command in your host, because the image was mounted to `/mnt/d` directory. For example:
```bash
echo "Test file system" > /mnt/d/test.doc
```
- After that check the file content by our OS cat command:
```shell
cat test.doc
```
- And also, you can run binary files by specifying the file name. For example, we need to run `process4.bin` program:
```shell
process4.bin
```
- In addition, we have many features waiting for you to experiment :).
## 6. Test on the real machine
- After build the OS, copy our image to the USB device:
```bash
sudo dd if=boot.img of=/dev/sdb
```
- Plug the USB to your machine, booting it with the USB.
## 7. Building user program
- Please build program with our C/C++ runtime library.