dynarmic: 6.7.0

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Merry 2024-03-02 17:06:53 +00:00
parent 732a657694
commit fa6cc2e4b2
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cmake_minimum_required(VERSION 3.12)
project(dynarmic LANGUAGES C CXX ASM VERSION 6.6.3)
project(dynarmic LANGUAGES C CXX ASM VERSION 6.7.0)
# Determine if we're built as a subproject (using add_subdirectory)
# or if this is the master project.

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README.md
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@ -5,65 +5,48 @@ Dynarmic
A dynamic recompiler for ARM.
Highlight features:
- Fast dynamic binary translation via Just-in-Time compilation
- Clean API
- Implemented in modern C++20
- Hooks exposed for easy code instrumentation
- Code injection support for very fine-grained instrumentation
- Support for unusual address space setups (bring-your-own memory system)
- Native support for most popular operating systems (Windows, macOS, Linux, FreeBSD, OpenBSD, NetBSD, Android)
*Please note that an adversarial guest program [can determine if it is being run under dynarmic](#disadvantages-of-dynarmic). Preventing this is not a goal of this project.*
### Supported guest architectures
* ARMv6K
* ARMv7A
* 32-bit ARMv8
* 64-bit ARMv8
* v3
* v4
* v4T
* v5TE
* v6K
* v6T2
* v7A
* 32-bit v8
* 64-bit v8
You can specify the specific guest version using [ArchVersion](src/dynarmic/interface/A32/arch_version.h).
There are no plans to support v1 or v2.
### Supported host architectures
* x86-64
* 64-bit ARMv8 (AArch64)
* AArch64
There are no plans to support x86-32.
There are no plans to support any 32-bit architecture.
Projects using Dynarmic
-----------------------
Important API Changes in v6.x Series
------------------------------------
* [Citra - Nintendo 3DS emulator](https://citra-emu.org)
* [yuzu - Nintendo Switch emulator](https://yuzu-emu.org)
* [Panda3DS - Red-panda-themed Nintendo 3DS emulator](https://github.com/wheremyfoodat/Panda3DS)
* [Vita3K - An Experimental PSVita emulator](https://vita3k.org)
* [touchHLE - A high-level emulator for iPhone OS applications](https://touchhle.org/)
* [EKA2L1 - An Experimental Symbian OS emulator](https://github.com/EKA2L1/EKA2L1)
* [unidbg - Android native library emulation, with experimental iOS emulation](https://github.com/zhkl0228/unidbg)
* **v6.7.0**
* To support use cases where one wants to have the guest to have the same address space as the host, `nullptr` is now a valid value for `fastmem_pointer`.
**This change is not backwards-compatible.** If you were previously using `nullptr` to represent an invalid fastmem arena, you will now have to use `std::nullopt`.
Alternatives to Dynarmic
------------------------
If you are looking at a recompiler which you can use with minimal effort to run ARM executables on non-native platforms, we would strongly recommend looking at qemu-user-static ([description of qemu-user-static](https://wiki.debian.org/QemuUserEmulation), [using qemu-user-static in combination with Docker to provide a complete emulated environment](https://github.com/multiarch/qemu-user-static)). Having a complete plug-and-play solution is out-of-scope of this project.
Here are some projects with the same goals as dynarmic:
* [ChocolArm64 from Ryujinx](https://github.com/Ryujinx/Ryujinx/tree/master/ChocolArm64) - ARMv8 recompiler on top of RyuJIT
* [Unicorn](https://www.unicorn-engine.org/) - Recompiling multi-architecture CPU emulator, based on QEMU
* [SkyEye](http://skyeye.sourceforge.net) - Cached interpreter for ARM
More general alternatives:
* [tARMac](https://davidsharp.com/tarmac/) - Tarmac's use of armlets was initial inspiration for us to use an intermediate representation
* [QEMU](https://www.qemu.org/) - Recompiling multi-architecture system emulator
* [VisUAL](https://salmanarif.bitbucket.io/visual/index.html) - Visual ARM UAL emulator intended for education
* A wide variety of other recompilers, interpreters and emulators can be found embedded in other projects, here are some we would recommend looking at:
* [firebird's recompiler](https://github.com/nspire-emus/firebird) - Takes more of a call-threaded approach to recompilation
* [higan's arm7tdmi emulator](https://github.com/higan-emu/higan/tree/master/higan/component/processor/arm7tdmi) - Very clean code-style
* [arm-js by ozaki-r](https://github.com/ozaki-r/arm-js) - Emulates ARMv7A and some peripherals of Versatile Express, in the browser
Disadvantages of Dynarmic
-------------------------
In the pursuit of speed, some behavior not commonly depended upon is elided. Therefore this emulator does not match spec.
Known examples:
* Only user-mode is emulated, there is no emulation of any other privilege levels.
* FPSR state is approximate.
* Misaligned loads/stores are not appropriately trapped in certain cases.
* Exclusive monitor behavior may not match any known physical processor.
As with most other hobby ARM emulation projects, no formal verification has been done. Use this code base at your own risk.
Documentation
-------------
@ -192,6 +175,40 @@ int main(int argc, char** argv) {
}
```
Alternatives to Dynarmic
------------------------
Here are some projects with the same goals as dynarmic:
* [Unicorn](https://www.unicorn-engine.org/) - Recompiling multi-architecture CPU emulator, based on QEMU
* [SkyEye](http://skyeye.sourceforge.net) - Cached interpreter for ARM
More general alternatives:
* [tARMac](https://davidsharp.com/tarmac/) - Tarmac's use of armlets was initial inspiration for us to use an intermediate representation
* [QEMU](https://www.qemu.org/) - Recompiling multi-architecture system emulator
* [VisUAL](https://salmanarif.bitbucket.io/visual/index.html) - Visual ARM UAL emulator intended for education
* A wide variety of other recompilers, interpreters and emulators can be found embedded in other projects, here are some we would recommend looking at:
* [firebird's recompiler](https://github.com/nspire-emus/firebird) - Takes more of a call-threaded approach to recompilation
* [higan's arm7tdmi emulator](https://github.com/higan-emu/higan/tree/master/higan/component/processor/arm7tdmi) - Very clean code-style
* [arm-js by ozaki-r](https://github.com/ozaki-r/arm-js) - Emulates ARMv7A and some peripherals of Versatile Express, in the browser
Disadvantages of Dynarmic
-------------------------
In the pursuit of speed, some behavior not commonly depended upon is elided. Therefore this emulator does not match spec.
Please note that this would mean that a guest application can easily determine if it is being run under instrumentation.
Known examples:
* Only user-mode is emulated, there is no emulation of any other privilege levels.
* FPSR state is approximate.
* Misaligned loads/stores are not appropriately trapped in certain cases.
* Exclusive monitor behavior may not match any known physical processor.
No formal verification has been done, and no security assessment has been made.
Use this code base at your own risk.
Legal
-----