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dynarmic: 6.7.0
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Merry
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2 changed files with 67 additions and 50 deletions
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@ -1,5 +1,5 @@
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cmake_minimum_required(VERSION 3.12)
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project(dynarmic LANGUAGES C CXX ASM VERSION 6.6.3)
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project(dynarmic LANGUAGES C CXX ASM VERSION 6.7.0)
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# Determine if we're built as a subproject (using add_subdirectory)
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# or if this is the master project.
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115
README.md
115
README.md
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@ -5,65 +5,48 @@ Dynarmic
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A dynamic recompiler for ARM.
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Highlight features:
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- Fast dynamic binary translation via Just-in-Time compilation
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- Clean API
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- Implemented in modern C++20
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- Hooks exposed for easy code instrumentation
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- Code injection support for very fine-grained instrumentation
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- Support for unusual address space setups (bring-your-own memory system)
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- Native support for most popular operating systems (Windows, macOS, Linux, FreeBSD, OpenBSD, NetBSD, Android)
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*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.*
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### Supported guest architectures
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* ARMv6K
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* ARMv7A
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* 32-bit ARMv8
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* 64-bit ARMv8
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* v3
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* v4
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* v4T
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* v5TE
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* v6K
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* v6T2
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* v7A
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* 32-bit v8
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* 64-bit v8
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You can specify the specific guest version using [ArchVersion](src/dynarmic/interface/A32/arch_version.h).
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There are no plans to support v1 or v2.
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### Supported host architectures
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* x86-64
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* 64-bit ARMv8 (AArch64)
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* AArch64
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There are no plans to support x86-32.
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There are no plans to support any 32-bit architecture.
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Projects using Dynarmic
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-----------------------
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Important API Changes in v6.x Series
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------------------------------------
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* [Citra - Nintendo 3DS emulator](https://citra-emu.org)
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* [yuzu - Nintendo Switch emulator](https://yuzu-emu.org)
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* [Panda3DS - Red-panda-themed Nintendo 3DS emulator](https://github.com/wheremyfoodat/Panda3DS)
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* [Vita3K - An Experimental PSVita emulator](https://vita3k.org)
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* [touchHLE - A high-level emulator for iPhone OS applications](https://touchhle.org/)
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* [EKA2L1 - An Experimental Symbian OS emulator](https://github.com/EKA2L1/EKA2L1)
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* [unidbg - Android native library emulation, with experimental iOS emulation](https://github.com/zhkl0228/unidbg)
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* **v6.7.0**
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* 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`.
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**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`.
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Alternatives to Dynarmic
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------------------------
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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.
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Here are some projects with the same goals as dynarmic:
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* [ChocolArm64 from Ryujinx](https://github.com/Ryujinx/Ryujinx/tree/master/ChocolArm64) - ARMv8 recompiler on top of RyuJIT
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* [Unicorn](https://www.unicorn-engine.org/) - Recompiling multi-architecture CPU emulator, based on QEMU
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* [SkyEye](http://skyeye.sourceforge.net) - Cached interpreter for ARM
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More general alternatives:
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* [tARMac](https://davidsharp.com/tarmac/) - Tarmac's use of armlets was initial inspiration for us to use an intermediate representation
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* [QEMU](https://www.qemu.org/) - Recompiling multi-architecture system emulator
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* [VisUAL](https://salmanarif.bitbucket.io/visual/index.html) - Visual ARM UAL emulator intended for education
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* A wide variety of other recompilers, interpreters and emulators can be found embedded in other projects, here are some we would recommend looking at:
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* [firebird's recompiler](https://github.com/nspire-emus/firebird) - Takes more of a call-threaded approach to recompilation
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* [higan's arm7tdmi emulator](https://github.com/higan-emu/higan/tree/master/higan/component/processor/arm7tdmi) - Very clean code-style
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* [arm-js by ozaki-r](https://github.com/ozaki-r/arm-js) - Emulates ARMv7A and some peripherals of Versatile Express, in the browser
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Disadvantages of Dynarmic
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-------------------------
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In the pursuit of speed, some behavior not commonly depended upon is elided. Therefore this emulator does not match spec.
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Known examples:
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* Only user-mode is emulated, there is no emulation of any other privilege levels.
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* FPSR state is approximate.
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* Misaligned loads/stores are not appropriately trapped in certain cases.
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* Exclusive monitor behavior may not match any known physical processor.
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As with most other hobby ARM emulation projects, no formal verification has been done. Use this code base at your own risk.
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Documentation
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-------------
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@ -192,6 +175,40 @@ int main(int argc, char** argv) {
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}
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```
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Alternatives to Dynarmic
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------------------------
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Here are some projects with the same goals as dynarmic:
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* [Unicorn](https://www.unicorn-engine.org/) - Recompiling multi-architecture CPU emulator, based on QEMU
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* [SkyEye](http://skyeye.sourceforge.net) - Cached interpreter for ARM
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More general alternatives:
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* [tARMac](https://davidsharp.com/tarmac/) - Tarmac's use of armlets was initial inspiration for us to use an intermediate representation
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* [QEMU](https://www.qemu.org/) - Recompiling multi-architecture system emulator
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* [VisUAL](https://salmanarif.bitbucket.io/visual/index.html) - Visual ARM UAL emulator intended for education
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* A wide variety of other recompilers, interpreters and emulators can be found embedded in other projects, here are some we would recommend looking at:
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* [firebird's recompiler](https://github.com/nspire-emus/firebird) - Takes more of a call-threaded approach to recompilation
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* [higan's arm7tdmi emulator](https://github.com/higan-emu/higan/tree/master/higan/component/processor/arm7tdmi) - Very clean code-style
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* [arm-js by ozaki-r](https://github.com/ozaki-r/arm-js) - Emulates ARMv7A and some peripherals of Versatile Express, in the browser
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Disadvantages of Dynarmic
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-------------------------
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In the pursuit of speed, some behavior not commonly depended upon is elided. Therefore this emulator does not match spec.
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Please note that this would mean that a guest application can easily determine if it is being run under instrumentation.
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Known examples:
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* Only user-mode is emulated, there is no emulation of any other privilege levels.
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* FPSR state is approximate.
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* Misaligned loads/stores are not appropriately trapped in certain cases.
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* Exclusive monitor behavior may not match any known physical processor.
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No formal verification has been done, and no security assessment has been made.
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Use this code base at your own risk.
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Legal
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-----
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