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@ -16,6 +16,41 @@ A dynamic recompiler for ARM.
There are no plans to support x86-32.
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://gitlab.com/higan/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
-------------