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Unicorn CPU emulator framework (ARM, AArch64, M68K, Mips, Sparc, X86)
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Peter Maydell 241c561bc3
target/arm: Correctly handle overlapping small MPU regions 
To correctly handle small (less than TARGET_PAGE_SIZE) MPU regions,
we must correctly handle the case where the address being looked
up hits in an MPU region that is not small but the address is
in the same page as a small region. For instance if MPU region
1 covers an entire page from 0x2000 to 0x2400 and MPU region
2 is small and covers only 0x2200 to 0x2280, then for an access
to 0x2000 we must not return a result covering the full page
even though we hit the page-sized region 1. Otherwise we will
then cache that result in the TLB and accesses that should
hit region 2 will incorrectly find the region 1 information.

Check for the case where we miss an MPU region but it is still
within the same page, and in that case narrow the size we will
pass to tlb_set_page_with_attrs() for whatever the final
outcome is of the MPU lookup.

Backports commit 9d2b5a58f85be2d8e129c4b53d6708ecf8796e54 from qemu
2018-07-23 19:54:00 -04:00
bindings
docs
include cpu: Convert cpu_index into a bitmap 2018-03-21 08:06:07 -04:00
msvc Makefile: Rename TARGET_DIRS to TARGET_LIST 2018-06-08 19:22:45 -04:00
qemu target/arm: Correctly handle overlapping small MPU regions 2018-07-23 19:54:00 -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
AUTHORS.TXT
Brewfile
ChangeLog
config.mk
COPYING
COPYING_GLIB
COPYING.LGPL2
CREDITS.TXT
install-cmocka-linux.sh
list.c
make.sh
Makefile
msvc.bat
pkgconfig.mk
README.md
uc.c exec: Drop unnecessary code for unicorn 2018-03-12 10:11:46 -04:00
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.