mirror of
https://github.com/yuzu-emu/unicorn.git
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d5298c5370
For TCG we want to distinguish which cluster a CPU is in, and we need to do it quickly. Cache the cluster index in the CPUState struct, by having the cluster object set cpu->cluster_index for each CPU child when it is realized. This means that board/SoC code must add all CPUs to the cluster before realizing the cluster object. Regrettably QOM provides no way to prevent adding children to a realized object and no way for the parent to be notified when a new child is added to it, so we don't have any way to enforce/assert this constraint; all we can do is document it in a comment. We can at least put in a check that the cluster contains at least one CPU, which should catch the typical cases of "realized cluster too early" or "forgot to parent the CPUs into it". The restriction on how many clusters can exist in the system is imposed by TCG code which will be added in a subsequent commit, but the check to enforce it in cluster.c fits better in this one. Backports relevant parts of commit 7ea7b9ad532e59c3efbcabff0e3484f4df06104c from qemu |
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Unicorn Engine
Unicorn is a lightweight, multi-platform, multi-architecture CPU emulator framework based on QEMU.
Unicorn offers some unparalleled features:
- Multi-architecture: ARM, ARM64 (ARMv8), M68K, MIPS, SPARC, and X86 (16, 32, 64-bit)
- Clean/simple/lightweight/intuitive architecture-neutral API
- Implemented in pure C language, with bindings for Crystal, Clojure, Visual Basic, Perl, Rust, Ruby, Python, Java, .NET, Go, Delphi/Free Pascal and Haskell.
- Native support for Windows & *nix (with Mac OSX, Linux, *BSD & Solaris confirmed)
- High performance via Just-In-Time compilation
- Support for fine-grained instrumentation at various levels
- Thread-safety by design
- Distributed under free software license GPLv2
Further information is available at http://www.unicorn-engine.org
License
This project is released under the GPL license.
Compilation & Docs
See docs/COMPILE.md file for how to compile and install Unicorn.
More documentation is available in docs/README.md.
Contact
Contact us via mailing list, email or twitter for any questions.
Contribute
If you want to contribute, please pick up something from our Github issues.
We also maintain a list of more challenged problems in a TODO list.
CREDITS.TXT records important contributors of our project.