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Alexey Kardashevskiy b90333a531
memory: Share special empty FlatView 
This shares an cached empty FlatView among address spaces. The empty
FV is used every time when a root MR renders into a FV without memory
sections which happens when MR or its children are not enabled or
zero-sized. The empty_view is not NULL to keep the rest of memory
API intact; it also has a dispatch tree for the same reason.

On POWER8 with 255 CPUs, 255 virtio-net, 40 PCI bridges guest this halves
the amount of FlatView's in use (557 -> 260) and dispatch tables
(~800000 -> ~370000). In an unrelated experiment with 112 non-virtio
devices on x86 ("-M pc"), only 4 FlatViews are alive, and about ~2000
are created at startup.

Backports commit 092aa2fc65b7a35121616aad8f39d47b8f921618 from qemu
2018-03-11 22:34:28 -04:00
bindings
docs
include memory: Share special empty FlatView 2018-03-11 22:34:28 -04:00
msvc qapi: Move qapi-schema.json to qapi/, rename generated files 2018-03-09 11:35:11 -05:00
qemu memory: Share special empty FlatView 2018-03-11 22:34:28 -04:00
samples
tests
.appveyor.yml
.gitignore qapi: Move qapi-schema.json to qapi/, rename generated files 2018-03-09 11:35:11 -05:00
.travis.yml use new travis osx image and brew (#935) 2018-01-05 10:29:49 +08:00
AUTHORS.TXT
Brewfile
ChangeLog
config.mk
COPYING
COPYING.LGPL2
COPYING_GLIB
CREDITS.TXT
install-cmocka-linux.sh
list.c
make.sh
Makefile crypto: introduce new module for computing hash digests 2018-02-17 15:23:17 -05:00
msvc.bat
pkgconfig.mk
README.md add Clojure 2017-12-23 00:32:33 +08:00
uc.c Move target-* CPU file into a target/ folder 2018-03-01 22:50:58 -05:00
windows_export.bat

README.md

Unicorn Engine

Join the chat at https://gitter.im/unicorn-engine/chat

Build Status Build status

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.