Add riscv64 managed unwinder for cDAC

eng/Subsets.props

@@ -656,8 +656,6 @@
             <_BuildMonoRuntimePack Condition="'$(RuntimeFlavor)' == 'Mono' and '$(MonoSupported)' == 'true'">true</_BuildMonoRuntimePack>
             <_BuildHostPack Condition="'$(RuntimeFlavor)' == '$(PrimaryRuntimeFlavor)' and '$(TargetsMobile)' != 'true'">true</_BuildHostPack>
             <_BuildCdacPack Condition="'$(_CDacToolsBuilt)' == 'true' and '$(RuntimeFlavor)' == 'CoreCLR' and '$(TargetsMobile)' != 'true' and ('$(TargetOS)' == 'windows' or '$(TargetOS)' == 'osx' or '$(TargetOS)' == 'linux')">true</_BuildCdacPack>
-            <!-- Some source build configurations and musl need to work out packaging errors before they can be enabled -->
-            <_BuildCdacPack Condition="'$(DotNetBuildSourceOnly)' == 'true' or '$(TargetsLinuxMusl)' == 'true'">false</_BuildCdacPack>
             <_BuildBundle Condition="'$(RuntimeFlavor)' == '$(PrimaryRuntimeFlavor)' and '$(TargetsMobile)' != 'true'">true</_BuildBundle>
           </PropertyGroup>
 

eng/pipelines/runtime.yml

@@ -521,7 +521,7 @@ extends:
           jobParameters:
             testScope: innerloop
             nameSuffix: CoreCLR_Bootstrapped
-            buildArgs: -s clr+libs+host+packs -c $(_BuildConfig) -rc Checked --bootstrap
+            buildArgs: -s clr+libs+host+packs+tools.cdac -c $(_BuildConfig) -rc Checked --bootstrap
             timeoutInMinutes: 120
             condition: >-
               or(

src/native/managed/Directory.Build.targets

@@ -1,4 +1,6 @@
 <Project>
     <Import Project=".\native-library.targets" Condition="'$(IsSourceProject)' == 'true' and '$(Language)' == 'C#'" />
     <Import Project="..\..\..\Directory.Build.targets" />
+    <Import Project="$(RepositoryEngineeringDir)liveILLink.targets" Condition="'$(UseBootstrapLayout)' == 'true'" />
+    <Import Project="$(RepositoryEngineeringDir)targetingpacks.targets" Condition="'$(UseBootstrapLayout)' == 'true'" />
 </Project>

src/native/managed/cdac/Microsoft.Diagnostics.DataContractReader.Contracts/Contracts/StackWalk/Context/IPlatformAgnosticContext.cs

@@ -32,6 +32,7 @@ public static IPlatformAgnosticContext GetContextForPlatform(Target target)
             RuntimeInfoArchitecture.X64 => new ContextHolder<AMD64Context>(),
             RuntimeInfoArchitecture.Arm => new ContextHolder<ARMContext>(),
             RuntimeInfoArchitecture.Arm64 => new ContextHolder<ARM64Context>(),
+            RuntimeInfoArchitecture.RiscV64 => new ContextHolder<RISCV64Context>(),
             RuntimeInfoArchitecture.Unknown => throw new InvalidOperationException($"Processor architecture is required for creating a platform specific context and is not provided by the target"),
             _ => throw new InvalidOperationException($"Unsupported architecture {runtimeInfo.GetTargetArchitecture()}"),
         };