b3a7a973a1
The codepath from #3826 was only targeting 256-bit sized operations. This missed the vpgatherdq/vgatherdpd 128-bit operations. By extending the codepath to understand 128-bit operations, we now hit these instruction variants. With this PR, we now have SVE128 codepaths that handle ALL variants of x86 gather instructions! There are zero ASIMD fallbacks used in this case! Of course depending on the instruction, the performance still leaves a lot to be desired, and there is no way to emulate x86 TSO behaviour without an ASIMD fallback, which we will likely need to add as a fallback at some point. Based on #3836 until that is merged. |
||
|---|---|---|
| .github | ||
| CI | ||
| CMakeFiles | ||
| CodeEmitter | ||
| CPack | ||
| Data | ||
| docs | ||
| External | ||
| FEXCore | ||
| FEXHeaderUtils | ||
| include | ||
| Scripts | ||
| Source | ||
| ThunkLibs | ||
| unittests | ||
| .clang-format | ||
| .clang-format-ignore | ||
| .git-blame-ignore-revs | ||
| .gitignore | ||
| .gitmodules | ||
| CMakeLists.txt | ||
| CMakeSettings.json | ||
| CODE_OF_CONDUCT.md | ||
| Dockerfile | ||
| LICENSE | ||
| Readme.md | ||
| toolchain_mingw.cmake | ||
| toolchain_x86_32.cmake | ||
| toolchain_x86_64.cmake | ||
FEX - Fast x86 emulation frontend
FEX allows you to run x86 and x86-64 binaries on an AArch64 host, similar to qemu-user and box86. It has native support for a rootfs overlay, so you don't need to chroot, as well as some thunklibs so it can forward things like GL to the host. FEX presents a Linux 5.0+ interface to the guest, and supports only AArch64 as a host. FEX is very much work in progress, so expect things to change.
Quick start guide
For Ubuntu 20.04, 21.04, 21.10, 22.04
Execute the following command in the terminal to install FEX through a PPA.
curl --silent https://raw.githubusercontent.com/FEX-Emu/FEX/main/Scripts/InstallFEX.py --output /tmp/InstallFEX.py && python3 /tmp/InstallFEX.py && rm /tmp/InstallFEX.py
This command will walk you through installing FEX through a PPA, and downloading a RootFS for use with FEX.
Ubuntu PPA is updated with our monthly releases.
For everyone else
Please see Building FEX.
Getting Started
FEX has been tested to build and run on ARMv8.0+ hardware. ARMv7 hardware will not work. Expected operating system usage is Linux. FEX has been tested with Ubuntu 20.04, 20.10, and 21.04. Also Arch Linux.
On AArch64 hosts the user MUST have an x86-64 RootFS Creating a RootFS.
Navigating the Source
See the Source Outline for more information.
Building FEX
Follow the guide on the official FEX-Emu Wiki here.
RootFS generation
AArch64 hosts require a rootfs for running applications. Follow the guide on the wiki page for seeing how to set up the rootfs from scratch https://wiki.fex-emu.com/index.php/Development:Setting_up_RootFS
