MSYS-SkyEye 2.0 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The most popular version among the software users is 2.0. We recommend checking the downloaded files with any free antivirus. MSYS-SkyEye can be installed on 32-bit versions of Windows XP/7/8/10/11. The actual developer of the free program is Tsinghua.
From the developer:
SkyEye is a full system simulator which takes llvm as IR of dynmic compiled framework. It can simulate series ARM, Coldfire, Mips, Powerpc, Sparc, x86, TI DSP, and Blackfin DSP Processors. It can also simulate multi-core systems using the multi-core processors of host PC.