WOA X64 emulator for ARM

<p>Game developer ports x86 game to ARM just to compare benchmark performance. </p><p><br></p><p><a href="https://megayuchi.com/2019/12/08/surface-pro-x-benchmark-from-the-programmers-point-of-view/&quot; target="_blank">https://megayuchi.com/2019/12/08/surface-pro-x-benchmark-from-the-programmers-point-of-view/</a></p><p><br></p><p>His conclusion:</p><p>"</p><ol><li>"In general CPU operations – arithmetic, reading from and writing to memory, the ARM64 performance of the SQ1 processor is satisfactory.</li><li><span style="color: var(–color-text);">When using spin lock, performance is significantly lower than intel x86. Also when it in a bad situation with multithreading, such as using Critical Sections, performance is significantly lower than x86.</span></li><li><span style="color: var(–color-text);">It’s still slower than intel x86. In addition to the clock frequency, instruction efficiency is still lower than Intel x86.</span></li><li><span style="color: var(–color-text);">But that’s enough to use as a laptop (assuming it running apps for ARM64). CPU performance is not severely degraded compared to Intel x86. Sometimes it’s better than x86. GPU performance in particular is impressive.</span></li><li><span style="color: var(–color-text);">At the moment, there are problems with Qualcomm’s GPU drivers. Both performance and stability are a problem with DirectX.</span></li><li><span style="color: var(–color-text);">If popular productivity applications are released for ARM64, I think it can provide a working environment that is not lacking compared to x86 devices.</span></li><li><span style="color: var(–color-text);">If the GPU driver improves, I think the game that runs on the x86 Surface Pro can run smoothly.</span></li><li><span style="color: var(–color-text);">x86 emulation performance is significantly lower than that of native ARM64. If the Windows on ARM ecosystem has to rely on x86 emulation, there is no future.</span></li></ol><p>"</p><p><br></p><p>The last point on emulation is scary. It looks like Microsoft has a lot more work to do.</p><p><br></p>

<p>I tried to find more about x64 emulation and so far no luck but here are some posts on the current 32bit implementation</p><p><br></p><p>https://channel9.msdn.com/Events/Build/2017/P4171</p><p>https://wbenny.github.io/2018/11/04/wow64-internals.html</p><p>https://threatvector.cylance.com/en_us/home/teardown-windows-10-on-arm-x86-emulation.html</p><p>https://docs.microsoft.com/en-us/windows/uwp/porting/apps-on-arm</p&gt;