Add support for building ARM64 native only eBPF for Windows.

.github/workflows/cicd.yml

@@ -59,19 +59,24 @@ jobs:
 
 
   onebranch:
+    strategy:
+      matrix:
+        Architecture: ['x64', 'ARM64']
     # Always run this job.
     if: github.event_name == 'schedule' || github.event_name == 'pull_request' || github.event_name == 'push' || github.event_name == 'merge_group' || github.event_name == 'workflow_dispatch'
     uses: ./.github/workflows/reusable-build.yml
     with:
       ref: ${{ github.ref }}
       repository: ${{ github.repository }}
-      build_artifact: Build-x64-onebranch
+      build_artifact: Build-${{ matrix.Architecture }}-onebranch
       generate_release_package: true
       build_msi: true
       build_nuget: true
       configurations: '["NativeOnlyDebug", "NativeOnlyRelease"]'
-      build_options: /p:BuildOneBranch='True' /t:tools\onebranch
+      build_options: /p:BuildOneBranch='True' /t:tools\onebranch /t:installer\ebpf-for-windows
       solution_file: "ebpf-for-windows.sln"
+      architecture: ${{ matrix.Architecture }}
+      download_demo_repository: false
 
   # Perform the native-only build.
   regular_native-only:

.github/workflows/reusable-build.yml

@@ -53,6 +53,14 @@ on:
         required: false
         type: string
         default: 'ebpf-for-windows.sln'
+      architecture:
+        required: false
+        type: string
+        default: 'x64'
+      download_demo_repository:
+        required: false
+        type: boolean
+        default: true
     outputs:
       should_skip:
         description: 'Whether build was skipped due to duplicate action.'
@@ -82,7 +90,7 @@ jobs:
       SOLUTION_FILE_PATH: ${{inputs.solution_file}}
       BUILD_ARTIFACT_NAME: ${{inputs.build_artifact}}
       BUILD_CONFIGURATION: ${{matrix.configurations}}
-      BUILD_PLATFORM: x64
+      BUILD_PLATFORM: ${{inputs.architecture}}
       BUILD_OPTIONS: ${{inputs.build_options}}
       CXX_FLAGS: ${{inputs.cxx_flags}}
       LD_FLAGS: ${{inputs.ld_flags}}
@@ -161,7 +169,7 @@ jobs:
         cache-name: cache-verifier-project
       with:
         path: external/ebpf-verifier/build
-        key: ${{ runner.os }}-${{env.BUILD_PLATFORM}}-${{env.BUILD_CONFIGURATION}}-${{env.BUILD_ARTIFACT_NAME}}-${{ hashFiles('.git/modules/external/ebpf-verifier/HEAD') }}-${{ hashFiles('external/Directory.Build.props')}}-${{env.msvc_tools_version}}
+        key: ${{ runner.os }}-${{env.BUILD_PLATFORM}}-${{env.BUILD_CONFIGURATION}}-${{env.BUILD_ARTIFACT_NAME}}-${{ hashFiles('.git/modules/external/ebpf-verifier/HEAD') }}-${{ hashFiles('external/Directory.Build.props')}}-${{env.msvc_tools_version}}-${{ hashFiles('scripts/initialize_ebpf_repo.ps1')}}
 
     - name: Configuring repo for first build
       if: steps.skip_check.outputs.should_skip != 'true'
@@ -170,7 +178,7 @@ jobs:
         CXXFLAGS: /ZH:SHA_256 ${{env.CXX_FLAGS}}
         LDFLAGS: ${{env.LD_FLAGS}}
       run: |
-        .\scripts\initialize_ebpf_repo.ps1
+        .\scripts\initialize_ebpf_repo.ps1 ${{env.BUILD_PLATFORM}}
 
     - name: Build
       if: steps.skip_check.outputs.should_skip != 'true'
@@ -197,12 +205,12 @@ jobs:
         copy "${{env.msvc_tools_path}}\bin\Hostx64\x64\clang*" .
 
     - name: Download demo Debug repository
-      if: steps.skip_check.outputs.should_skip != 'true' && (matrix.configurations == 'Debug' || matrix.configurations == 'NativeOnlyDebug')
+      if: steps.skip_check.outputs.should_skip != 'true' && inputs.download_demo_repository == true && (matrix.configurations == 'Debug' || matrix.configurations == 'NativeOnlyDebug')
       working-directory: ${{env.GITHUB_WORKSPACE}}
       run: Invoke-WebRequest https://github.com/microsoft/ebpf-for-windows-demo/releases/download/v0.0.2/${{env.BUILD_PLATFORM}}-Debug-cilium-xdp.zip -OutFile x64-${{env.BUILD_CONFIGURATION}}-cilium-xdp.zip
 
     - name: Download demo Release repository
-      if: steps.skip_check.outputs.should_skip != 'true' && (matrix.configurations == 'Release' || matrix.configurations == 'NativeOnlyRelease')
+      if: steps.skip_check.outputs.should_skip != 'true' && inputs.download_demo_repository == true && (matrix.configurations == 'Release' || matrix.configurations == 'NativeOnlyRelease')
       working-directory: ${{env.GITHUB_WORKSPACE}}
       run: Invoke-WebRequest https://github.com/microsoft/ebpf-for-windows-demo/releases/download/v0.0.2/${{env.BUILD_PLATFORM}}-Release-cilium-xdp.zip -OutFile x64-${{env.BUILD_CONFIGURATION}}-cilium-xdp.zip
 
@@ -215,7 +223,7 @@ jobs:
         Invoke-WebRequest https://github.com/microsoft/bpf_performance/releases/download/v0.0.6/build-Release-windows-2022.zip -OutFile bpf_performance.zip
 
     - name: Extract artifacts to build path
-      if: steps.skip_check.outputs.should_skip != 'true' && matrix.configurations != 'FuzzerDebug'
+      if: steps.skip_check.outputs.should_skip != 'true' && inputs.download_demo_repository == true && matrix.configurations != 'FuzzerDebug'
       working-directory: ${{env.GITHUB_WORKSPACE}}
       run: |
         cd ${{github.workspace}}/${{env.BUILD_PLATFORM}}/${{env.BUILD_CONFIGURATION}}
@@ -243,12 +251,12 @@ jobs:
         path: ${{github.workspace}}/${{env.BUILD_PLATFORM}}/${{env.BUILD_CONFIGURATION}}/ebpf-for-windows.msi
 
     - name: Build the NuGet package
-      if: inputs.build_nuget == true && matrix.configurations == 'Release' && steps.skip_check.outputs.should_skip != 'true'
+      if: inputs.build_nuget == true && (matrix.configurations == 'Release' || matrix.configurations == 'NativeOnlyRelease') && steps.skip_check.outputs.should_skip != 'true'
       working-directory: ${{env.GITHUB_WORKSPACE}}
       run: msbuild /m /p:Configuration=${{env.BUILD_CONFIGURATION}} /p:Platform=${{env.BUILD_PLATFORM}} ${{env.SOLUTION_FILE_PATH}} ${{env.BUILD_OPTIONS}} /t:tools\nuget
 
     - name: Upload the NuGet package
-      if: inputs.build_nuget == true && matrix.configurations == 'Release' && steps.skip_check.outputs.should_skip != 'true'
+      if: inputs.build_nuget == true && (matrix.configurations == 'Release' || matrix.configurations == 'NativeOnlyRelease') && steps.skip_check.outputs.should_skip != 'true'
       uses: actions/upload-artifact@604373da6381bf24206979c74d06a550515601b9
       with:
         name: ebpf-for-windows - NuGet package (${{inputs.build_artifact}}_${{env.BUILD_CONFIGURATION}})

Directory.Build.props

@@ -31,6 +31,26 @@
       <Configuration>Release</Configuration>
       <Platform>x64</Platform>
     </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|ARM64">
+      <Configuration>Debug</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="NativeOnlyDebug|ARM64">
+      <Configuration>NativeOnlyDebug</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="FuzzerDebug|ARM64">
+      <Configuration>FuzzerDebug</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="NativeOnlyRelease|ARM64">
+      <Configuration>NativeOnlyRelease</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|ARM64">
+      <Configuration>Release</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Condition="'$(Analysis)'=='True'">
     <RunCodeAnalysis>true</RunCodeAnalysis>
@@ -44,10 +64,11 @@
     <DisableJIT>true</DisableJIT>
     <DisableInterpreter>true</DisableInterpreter>
   </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)'=='Release' Or '$(Configuration)'=='NativeOnlyRelease'">
+  <!-- Libsancov.lib not supported on arm64 -->
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64' Or '$(Configuration)|$(Platform)'=='NativeOnlyRelease|x64'">
     <FuzzerLibs>libsancov.lib;clang_rt.fuzzer_MD-x86_64.lib</FuzzerLibs>
   </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)'=='Debug' Or '$(Configuration)'=='FuzzerDebug' Or '$(Configuration)'=='NativeOnlyDebug'">
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64' Or '$(Configuration)|$(Platform)'=='FuzzerDebug|x64' Or '$(Configuration)|$(Platform)'=='NativeOnlyDebug|x64'">
     <FuzzerLibs>libsancov.lib;clang_rt.fuzzer_MDd-x86_64.lib</FuzzerLibs>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Fuzzer)'=='Release|True'">
@@ -81,6 +102,7 @@
     <Link>
       <CETCompat Condition="'$(Platform)'=='x64'">true</CETCompat>
       <AdditionalLibraryDirectories Condition="'$(Platform)'=='x64'">$(VC_LibraryPath_VC_x64_Desktop);%(Link.AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories Condition="'$(Platform)'=='ARM64'">$(VC_LibraryPath_VC_ARM64_Desktop);%(Link.AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(DisableJIT)'=='True'">
@@ -123,4 +145,17 @@
       <PreprocessorDefinitions>_AMD64_;_WIN32_WINNT=0x0a00;_WINDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
   </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Platform)'=='Win32'">
+    <ClCompile>
+      <PreprocessorDefinitions>_X86_;_WIN32_WINNT=0x0a00;_WINDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Platform)'=='ARM64'">
+    <ClCompile>
+      <!-- Set the _ARM64_ as it is required by winnt.h for correct compilation rather than the standard _M_ARM64 -->
+      <PreprocessorDefinitions>_ARM64_;_WIN32_WINNT=0x0a00;_WINDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <!-- Set the option to emit both armv8.0 atomics and armv8.1 atomics with processor detection to select the best performing one.-->
+      <AdditionalOptions>/d2overrideInterlockedIntrinsArm64 %(AdditionalOptions)</AdditionalOptions>
+    </ClCompile>
+  </ItemDefinitionGroup>
 </Project>