Add native Windows ARM64 (AArch64) support#1992
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Enables building and running Cemu natively on Windows on ARM (e.g. Snapdragon devices) with clang-cl. The existing AArch64 recompiler backend is used, so no x64 emulation is involved. Build system (CMakeLists.txt, dependencies/ih264d, src/Cafe): - Auto-select the arm64-windows-static vcpkg triplet and detect the AArch64 architecture even when the emulated host shell misreports it. - Disable IPO for clang-cl (LTO would force lld-link, which cannot read vcpkg's MSVC /GL objects) and link clang_rt.builtins for the compiler-rt calls (e.g. __udivti3) that lld-link does not add. - Set the static CRT on the xbyak_aarch64 target. - Locate pkgconf under the actual vcpkg host triplet instead of a hardcoded x64-windows path. - Build the bundled ih264d decoder as portable C on ARM64/Windows; its NEON .s files use ELF-only :got: relocations that do not assemble for COFF targets. Source (precompiled.h, ExceptionHandler_win32, Debugger, LatteTextureCache): - Guard x86-only intrinsics/paths behind ARCH_X86_64. clang-cl defines _MSC_VER but not __GNUC__, so several `#if defined(_MSC_VER)` branches wrongly selected x86 intrinsics on ARM64. Adds AArch64 register dumping to the crash handler. Manifest: use processorArchitecture="*" for Common-Controls so it resolves on ARM64. See BUILD.md for the build steps (Ninja + clang-cl + -DCMAKE_LINKER_TYPE=MSVC). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Builds Cemu for windows-11-arm with clang-cl + Ninja and uploads the ARM64 exe as an artifact, so official ARM64 Windows builds can be produced. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Addresses #1890.
After seeing #1890 I decided to give this a shot, since I have a Surface Laptop 7
(ARM). Hope you like it!
This enables building and running Cemu natively on Windows on ARM (e.g. Snapdragon
devices) with clang-cl. The existing AArch64 recompiler backend is used, so no x64
emulation is involved. Verified building and running on my device.
Build system (CMakeLists.txt, dependencies/ih264d, src/Cafe):
architecture even when the emulated host shell misreports it.
/GL objects) and link clang_rt.builtins for the compiler-rt calls (e.g. __udivti3)
that lld-link does not add.
x64-windows path.
use ELF-only :got: relocations that do not assemble for COFF targets.
Source (precompiled.h, ExceptionHandler_win32, Debugger, LatteTextureCache):
not GNUC, so several
#if defined(_MSC_VER)branches wrongly selected x86intrinsics on ARM64. Adds AArch64 register dumping to the crash handler.
Manifest: use processorArchitecture="*" for Common-Controls so it resolves on ARM64.
x86 / Linux / macOS builds are unaffected. Build steps are documented in BUILD.md
(Ninja + clang-cl + -DCMAKE_LINKER_TYPE=MSVC).