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DragonOS/README_EN.md
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新的内存管理模块 (#303) 
  实现了具有优秀架构设计的新的内存管理模块，对内核空间和用户空间的内存映射、分配、释放、管理等操作进行了封装，使得内核开发者可以更加方便地进行内存管理。

  内存管理模块主要由以下类型的组件组成：

- **硬件抽象层（MemoryManagementArch）** - 提供对具体处理器架构的抽象，使得内存管理模块可以在不同的处理器架构上运行
- **页面映射器（PageMapper）**- 提供对虚拟地址和物理地址的映射，以及页表的创建、填写、销毁、权限管理等操作。分为两种类型：内核页表映射器（KernelMapper）和用户页表映射器（位于具体的用户地址空间结构中）
- **页面刷新器（PageFlusher）** - 提供对页表的刷新操作（整表刷新、单页刷新、跨核心刷新）
- **页帧分配器（FrameAllocator）** - 提供对页帧的分配、释放、管理等操作。具体来说，包括BumpAllocator、BuddyAllocator
- **小对象分配器** - 提供对小内存对象的分配、释放、管理等操作。指的是内核里面的SlabAllocator （SlabAllocator的实现目前还没有完成）
- **MMIO空间管理器** - 提供对MMIO地址空间的分配、管理操作。（目前这个模块待进一步重构）
- **用户地址空间管理机制** - 提供对用户地址空间的管理。
    - VMA机制 - 提供对用户地址空间的管理，包括VMA的创建、销毁、权限管理等操作
    - 用户映射管理 - 与VMA机制共同作用，管理用户地址空间的映射
- **系统调用层** - 提供对用户空间的内存管理系统调用，包括mmap、munmap、mprotect、mremap等
- **C接口兼容层** - 提供对原有的C代码的接口，是的C代码能够正常运行。


除上面的新增内容以外，其它的更改内容：
- 新增二进制加载器，以及elf的解析器
- 解决由于local_irq_save、local_irq_restore函数的汇编不规范导致影响栈行为的bug。
- 解决local_irq_save未关中断的错误。
- 修复sys_gettimeofday对timezone参数的处理的bug

---------

Co-authored-by: kong <kongweichao@dragonos.org>
2023-07-22 16:27:02 +08:00

5.3 KiB
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DragonOS

Languages 中文|English

 

  DragonOS is an operating system running on the X86_64 Architecture. This project is currently under development!

All you want to know about DragonOS is here - DragonOS

Websites

How to run?

  The steps to run DragonOS are very simple. You can refer to the following information to run DragonOS within 15 minutes at the fastest!

DragonOS' Features

  See documentation:Features

How to join DragonOS ?

  If you are willing to join us, you can visit DragonOS's zulip community, learn about development dynamics and development tasks: https://DragonOS.zulipchat.com

  Or, you can also bring your ideas, discuss with community members, and create some new functions for DragonOS.

How to contact the community?

  You can send an email to the project's maintainer: longjin. His email address is [longjin@DragonOS.org](mailto: longjin@DragonOS.org) .

  Or join our development exchange QQ group: 115763565

  For the discussion of formal issues, we recommend that you use the official language to post on the corresponding section of DragonOS's zulip community. Or you can post questions under the issue of this repository.

List of contributors

Contributors to DragonOS-Community/DragonOS · GitHub

Get contact with us

Community Contact Email: contact@DragonOS.org

Maintainer longjin's Email：longjin@DragonOS.org

Reward

  DragonOS is an open source public welfare project, but its development cannot be separated from the support of funds. If you want, you can visit Sponsor - DragonOS , so as to promote the development of this project. The list of all sponsors will be published. Every bit of your sponsorship will contribute to the development of DragonOS!

Where will the sponsorship funds be used?

We guarantee that all sponsorship funds and items will be used for:

  • Subsidies or equipment support for active community developers
  • Cloud service expenditure of DragonOS
  • Equipment purchase
  • Any use conducive to the development and construction of DragonOS

Sponsor List

Not yet

We hope that in the future, some enterprises can sponsor DragonOS and inject financial power into its development!

Individual Sponsor List

Open source statement

  This project adopts GPLv2 LICENSE for open source. You are welcome to use the code of this project on the basis of abiding by the open source license!

What we support: using this project to create greater value and contribute code to this project under the condition of abiding by the agreement.

What we condemn: any non-compliance with the open source license. Including but not limited to: plagiarizing the code of the project as your graduation project and other academic misconduct, as well as commercial closed source use without payment.

If you find any violation of the open source license, we welcome you to send email feedback! Let's build an honest open source community together!

References

  This project refers to the following materials. I sincerely give my thanks to the authors of these projects, books and documents!