Docs: Update for release FEX-2603

Merge pull request #5338 from cjacek/llvm22
Fix mingw builds with LLVM 22.
2026-10-07 13:00:15 +02:00 · 2026-03-04 12:44:21 -08:00 · 2026-02-27 12:05:41 -08:00 · 2026-02-27 15:30:46 +01:00 · 2026-02-27 15:27:36 +01:00 · 2026-02-26 18:11:20 -08:00
349 changed files with 27233 additions and 22070 deletions
@@ -2,7 +2,7 @@
 Source/Common/cpp-optparse/*

 # Files with human-indented tables for readability - don't mess with these
-FEXCore/Source/Interface/Core/X86Tables/*
+FEXCore/Source/Interface/Core/X86Tables/*.cpp

 # Inline headers with list-like content that can't be processed individually
 Source/Tools/LinuxEmulation/LinuxSyscalls/x*/SyscallsNames.inl
@@ -22,3 +22,6 @@

 # Minor reformat with clang-format-19
 9fdd96af61c969cb5732471223f00eda64b7a069
+
+# Reformat of X86Tables.h
+ba2b0ef809f66f1a6d334f000798fa2ceafab26f
@@ -24,238 +24,138 @@ jobs:
      fail-fast: false

    steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v6
+      with:
+        fetch-depth: '0'
+        fetch-tags: 'true'

-    - name: Set runner label
-      run: echo "runner_label=${{ matrix.arch[1] }}" >> $GITHUB_ENV
-
-    - name: Set rootfs paths
+    - name: Set runner info
      run: |
-        echo "FEX_ROOTFS_MOUNT=/mnt/AutoNFS/rootfs/" >> $GITHUB_ENV
-        echo "FEX_ROOTFS_PATH=$HOME/Rootfs/" >> $GITHUB_ENV
-        echo "FEX_ROOTFS=$HOME/Rootfs/" >> $GITHUB_ENV
+        echo "runner_label=${{ matrix.arch[1] }}" >> $GITHUB_ENV
+        echo "runner_name=$(hostname)" >> $GITHUB_ENV

-    - name: Update RootFS cache
-      # Use a bash shell so we can use the same syntax for environment variable
-      # access regardless of the host operating system
-      shell: bash
-      run: $GITHUB_WORKSPACE/Scripts/CI_FetchRootFS.py
-
-    - name : submodule checkout
-      # Need to update submodules
-      run: |
-        git submodule sync --recursive
-        git submodule update --init --depth 1
-
-    - name: Clean Build Environment
-      run: rm -Rf ${{runner.workspace}}/build
-
-    - name: Create Build Environment
-      # Some projects don't allow in-source building, so create a separate build directory
-      # We'll use this as our working directory for all subsequent commands
-      run: cmake -E make_directory ${{runner.workspace}}/build
+    - name: Setup Build Environment
+      uses: ./.github/workflows/setup-env

    - name: Configure CMake
-      # Use a bash shell so we can use the same syntax for environment variable
-      # access regardless of the host operating system
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      # Note the current convention is to use the -S and -B options here to specify source
-      # and build directories, but this is only available with CMake 3.13 and higher.
-      # The CMake binaries on the Github Actions machines are (as of this writing) 3.12
-      run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -G Ninja -DENABLE_LTO=False -DENABLE_ASSERTIONS=True -DENABLE_X86_HOST_DEBUG=True -DBUILD_FEX_LINUX_TESTS=True -DBUILD_THUNKS=True -DCMAKE_INSTALL_PREFIX=${{runner.workspace}}/build/install
+      run: |
+        cmake -S . -B build -DCMAKE_BUILD_TYPE=$BUILD_TYPE -G Ninja -DENABLE_LTO=False -DENABLE_ASSERTIONS=True \
+          -DENABLE_X86_HOST_DEBUG=True -DBUILD_FEX_LINUX_TESTS=True -DBUILD_THUNKS=True \
+          -DCMAKE_INSTALL_PREFIX="$PWD"/build/install
+
+    # These steps make a lot of noise but rarely fail.
+    # Put them in a separate step to make normal build logs easier to parse
+    - name: Noisy Build Targets
+      run: cmake --build build --target asm_files 32bit_asm_files JemallocLibs Catch2 vixl cephes_128bit

    - name: Build
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      # Execute the build.  You can specify a specific target with "--target <NAME>"
-      run: cmake --build . --config $BUILD_TYPE
+      run: cmake --build build

    - name: Install
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      run: cmake --build . --config $BUILD_TYPE --target install
+      run: cmake --build build --target install

-    - name: gcc target tests 64
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      # Execute the gvisor tests
-      run: cmake --build . --config $BUILD_TYPE --target gcc_target_tests_64
-
-    - name: GCC64 Test Results move
+    # GCC tests
+    - name: GCC64 Target Tests
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_GCC64.log || true
+      uses: ./.github/workflows/test
+      with:
+        target: gcc_target_tests_64

-    - name: gcc target tests 32
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      # Execute the gvisor tests
-      run: cmake --build . --config $BUILD_TYPE --target gcc_target_tests_32
-
-    - name: GCC32 Test Results move
+    - name: GCC32 Target Tests
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_GCC32.log || true
+      uses: ./.github/workflows/test
+      with:
+        target: gcc_target_tests_32

-    - name: APITest tests
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      run: cmake --build . --config $BUILD_TYPE --target api_tests
-
-    - name: APITest Test Results move
+    # API tests
+    - name: API Tests
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_APITests.log || true
+      uses: ./.github/workflows/test
+      with:
+        target: api_tests

-    - name: FEXCore APITest tests
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      run: cmake --build . --config $BUILD_TYPE --target fexcore_apitests
-
-    - name: FEXCore APITest Test Results move
+    - name: FEXCore API Tests
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_FEXCoreAPITests.log || true
+      uses: ./.github/workflows/test
+      with:
+        target: fexcore_apitests

-    - name: ARMEmitter tests
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      run: cmake --build . --config $BUILD_TYPE --target emitter_tests
-
-    - name: ARMEmitter Test Results move
+    # ARM emission tests
+    - name: ARM Emitter Tests
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_ARMEmitterTests.log || true
+      uses: ./.github/workflows/test
+      with:
+        target: emitter_tests

-    - name: FEXLinuxTests
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
+    # Linux  tests
+    - name: FEX Linux Tests
+      if: ${{ always() }}
+      uses: ./.github/workflows/test
+      with:
+        target: fex_linux_tests_all
      env:
-        # These tests require non-portable install due to thunks.
        FEX_PORTABLE: 0
-      run: cmake --build . --config $BUILD_TYPE --target fex_linux_tests_all
-
-    - name: FEXLinuxTests Results move
-      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_FEXLinuxTests.log || true

+    # Thunking
    - name: Thunkgen tests
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      run: cmake --build . --config $BUILD_TYPE --target thunkgen_tests
-
-    - name: Thunkgen Results move
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_ThunkgenTests.log || true
+      uses: ./.github/workflows/test
+      with:
+        target: thunkgen_tests

    - name: Test GL No-Thunks
-      if: matrix.arch[1] == 'x64'
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
+      if: ${{ always() && matrix.arch[1] == 'x64' }}
+      uses: ./.github/workflows/test
+      with:
+        target: thunk_functional_tests_nothunks
      env:
-        DISPLAY: ":0"
-      run: cmake --build . --config $BUILD_TYPE --target thunk_functional_tests_nothunks
-
-    - name: No thunks Results move
-      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_NoThunkResults.log || true
+        DISPLAY: ':0'

    - name: Test GL Thunks
-      if: matrix.arch[1] == 'x64'
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
+      if: ${{ always() && matrix.arch[1] == 'x64' }}
+      uses: ./.github/workflows/test
+      with:
+        target: thunk_functional_tests_thunks
      env:
-        DISPLAY: ":0"
-      run: cmake --build . --config $BUILD_TYPE --target thunk_functional_tests_thunks
-
-    - name: Thunks Results move
-      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_ThunkResults.log || true
+        DISPLAY: ':0'

+    # ASM tests
    - name: ASM Tests
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      # Execute the unit tests
-      run: cmake --build . --config $BUILD_TYPE --target asm_tests
-
-    - name: ASM Test Results move
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_ASM.log || true
+      uses: ./.github/workflows/test
+      with:
+        target: asm_tests

-    - name: Posix Tests
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      # Execute the posixtest
-      run: cmake --build . --config $BUILD_TYPE --target posix_tests
-
-    - name: Posix Test Results move
+    # POSIX tests
+    - name: POSIX Tests
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_Posix.log || true
+      uses: ./.github/workflows/test
+      with:
+        target: posix_tests

-    - name: gvisor tests
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      # Execute the gvisor tests
-      run: cmake --build . --config $BUILD_TYPE --target gvisor_tests
-
-    - name: GVisor Test Results move
+    # GVisor tests
+    - name: GVisor Tests
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_GVisor.log || true
+      uses: ./.github/workflows/test
+      with:
+        target: gvisor_tests

+    # Struct verifier tests
    - name: Struct verifier tests
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      run: cmake --build . --config $BUILD_TYPE --target struct_verifier
-
-    - name: Struct verifier Test Results move
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_StructVerifier.log || true
-
-    - name: Truncate test results
-      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      # Cap out the log files at 20M in case something crash spins and dumps fault text
-      # ASM tests get quite close to 10MB
-      run: truncate --size="<20M" ${{runner.workspace}}/build/Testing/Temporary/LastTest_*.log || true
+      uses: ./.github/workflows/test
+      with:
+        target: struct_verifier

    - name: Remove old SHM regions
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: cmake --build . --config $BUILD_TYPE --target remove_old_shm_regions
-
-    - name: Set runner name
-      if: ${{ always() }}
-      run: echo "runner_name=$(hostname)" >> $GITHUB_ENV
+      run: cmake --build build --target remove_old_shm_regions

    - name: Upload results
      if: ${{ always() }}
-      uses: 'actions/upload-artifact@v4'
+      uses: actions/upload-artifact@v6
      timeout-minutes: 1
      with:
-        name: Results-${{ env.runner_name }}
-        path: ${{runner.workspace}}/build/Testing/Temporary/LastTest_*.log
+        name: Results-${{ env.runner_name }}-${{ env.runner_label }}
+        path: results/*.log
        retention-days: 3
@@ -31,163 +31,94 @@ jobs:
      fail-fast: false

    steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v6
+      with:
+        fetch-depth: '0'
+        fetch-tags: 'true'

-    - name: Set runner label
-      run: echo "runner_label=${{ matrix.arch[1] }}" >> $GITHUB_ENV
-
-    - name: Set rootfs paths
+    - name: Set runner info
      run: |
-        echo "FEX_ROOTFS_MOUNT=/mnt/AutoNFS/rootfs/" >> $GITHUB_ENV
-        echo "FEX_ROOTFS_PATH=$HOME/Rootfs/" >> $GITHUB_ENV
-        echo "FEX_ROOTFS=$HOME/Rootfs/" >> $GITHUB_ENV
+        echo "runner_label=${{ matrix.arch[1] }}" >> $GITHUB_ENV
+        echo "runner_name=$(hostname)" >> $GITHUB_ENV

-    - name: Update RootFS cache
-      # Use a bash shell so we can use the same syntax for environment variable
-      # access regardless of the host operating system
-      shell: bash
-      run: $GITHUB_WORKSPACE/Scripts/CI_FetchRootFS.py
-
-    - name : submodule checkout
-      # Need to update submodules
-      run: |
-        git submodule sync --recursive
-        git submodule update --init --depth 1
-
-    - name: Clean Build Environment
-      run: rm -Rf ${{runner.workspace}}/build
-
-    - name: Create Build Environment
-      # Some projects don't allow in-source building, so create a separate build directory
-      # We'll use this as our working directory for all subsequent commands
-      run: cmake -E make_directory ${{runner.workspace}}/build
+    - name: Setup Build Environment
+      uses: ./.github/workflows/setup-env

    - name: Configure CMake
-      # Use a bash shell so we can use the same syntax for environment variable
-      # access regardless of the host operating system
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      # Note the current convention is to use the -S and -B options here to specify source
-      # and build directories, but this is only available with CMake 3.13 and higher.
-      # The CMake binaries on the Github Actions machines are (as of this writing) 3.12
-      run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -G Ninja -DENABLE_LTO=False -DENABLE_ASSERTIONS=True -DENABLE_X86_HOST_DEBUG=True -DBUILD_FEX_LINUX_TESTS=True -DENABLE_GLIBC_ALLOCATOR_HOOK_FAULT=True -DENABLE_JEMALLOC_GLIBC_ALLOC=False -DCMAKE_INSTALL_PREFIX=${{runner.workspace}}/build/install
+      run: |
+        cmake -S . -B build -DCMAKE_BUILD_TYPE=$BUILD_TYPE -G Ninja -DENABLE_LTO=False \
+          -DENABLE_ASSERTIONS=True -DENABLE_X86_HOST_DEBUG=True -DBUILD_FEX_LINUX_TESTS=True \
+          -DENABLE_GLIBC_ALLOCATOR_HOOK_FAULT=True -DENABLE_JEMALLOC_GLIBC_ALLOC=False \
+          -DCMAKE_INSTALL_PREFIX="$PWD"/build/install
+
+    # These steps make a lot of noise but rarely fail.
+    # Put them in a separate step to make normal build logs easier to parse
+    - name: Noisy Build Targets
+      run: cmake --build build --target asm_files 32bit_asm_files JemallocLibs Catch2 vixl cephes_128bit

    - name: Build
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      # Execute the build.  You can specify a specific target with "--target <NAME>"
-      run: cmake --build . --config $BUILD_TYPE
+      run: cmake --build build

    - name: Install
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      run: cmake --build . --config $BUILD_TYPE --target install
+      run: cmake --build build --target install

-    - name: gcc target tests 64
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      # Execute the gvisor tests
-      run: cmake --build . --config $BUILD_TYPE --target gcc_target_tests_64
-
-    - name: GCC64 Test Results move
+    # GCC tests
+    - name: GCC64 Target Tests
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_GCC64.log || true
+      uses: ./.github/workflows/test
+      with:
+        target: gcc_target_tests_64

-    - name: gcc target tests 32
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      # Execute the gvisor tests
-      run: cmake --build . --config $BUILD_TYPE --target gcc_target_tests_32
-
-    - name: GCC32 Test Results move
+    - name: GCC32 Target Tests
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_GCC32.log || true
+      uses: ./.github/workflows/test
+      with:
+        target: gcc_target_tests_32

-    - name: APITest tests
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      run: cmake --build . --config $BUILD_TYPE --target api_tests
-
-    - name: APITest Test Results move
+    # API Tests
+    - name: API Tests
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_APITests.log || true
+      uses: ./.github/workflows/test
+      with:
+        target: api_tests

-    - name: FEXCore APITest tests
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      run: cmake --build . --config $BUILD_TYPE --target fexcore_apitests
-
-    - name: FEXCore APITest Test Results move
+    - name: FEXCore API Tests
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_FEXCoreAPITests.log || true
+      uses: ./.github/workflows/test
+      with:
+        target: fexcore_apitests

-    - name: FEXLinuxTests
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      run: cmake --build . --config $BUILD_TYPE --target fex_linux_tests_all
-
-    - name: FEXLinuxTests Results move
+    # Linux tests
+    - name: FEX Linux Tests
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_FEXLinuxTests.log || true
+      uses: ./.github/workflows/test
+      with:
+        target: fex_linux_tests_all

+    # ASM Tests
    - name: ASM Tests
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      # Execute the unit tests
-      run: cmake --build . --config $BUILD_TYPE --target asm_tests
-
-    - name: ASM Test Results move
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_ASM.log || true
+      uses: ./.github/workflows/test
+      with:
+        target: asm_tests

-    - name: Posix Tests
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      # Execute the posixtest
-      run: cmake --build . --config $BUILD_TYPE --target posix_tests
-
-    - name: Posix Test Results move
+    # POSIX Tests
+    - name: POSIX Tests
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_Posix.log || true
-
-    - name: Truncate test results
-      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      # Cap out the log files at 20M in case something crash spins and dumps fault text
-      # ASM tests get quite close to 10MB
-      run: truncate --size="<20M" ${{runner.workspace}}/build/Testing/Temporary/LastTest_*.log || true
+      uses: ./.github/workflows/test
+      with:
+        target: posix_tests

    - name: Remove old SHM regions
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: cmake --build . --config $BUILD_TYPE --target remove_old_shm_regions
-
-    - name: Set runner name
-      if: ${{ always() }}
-      run: echo "runner_name=$(hostname)" >> $GITHUB_ENV
+      run: cmake --build build --target remove_old_shm_regions

    - name: Upload results
      if: ${{ always() }}
-      uses: 'actions/upload-artifact@v4'
+      uses: actions/upload-artifact@v6
      timeout-minutes: 1
      with:
-        name: Results-${{ env.runner_name }}
-        path: ${{runner.workspace}}/build/Testing/Temporary/LastTest_*.log
+        name: Results-${{ env.runner_name }}-${{ env.runner_label }}
+        path: results/*.log
        retention-days: 3

@@ -24,83 +24,45 @@ jobs:
      fail-fast: false

    steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v6
+      with:
+        fetch-depth: '0'
+        fetch-tags: 'true'

-    - name: Set runner label
-      run: echo "runner_label=${{ matrix.arch[1] }}" >> $GITHUB_ENV
-
-    - name: Set rootfs paths
+    - name: Set runner info
      run: |
-        echo "FEX_ROOTFS_MOUNT=/mnt/AutoNFS/rootfs/" >> $GITHUB_ENV
-        echo "FEX_ROOTFS_PATH=$HOME/Rootfs/" >> $GITHUB_ENV
-        echo "FEX_ROOTFS=$HOME/Rootfs/" >> $GITHUB_ENV
+        echo "runner_label=${{ matrix.arch[1] }}" >> $GITHUB_ENV
+        echo "runner_name=$(hostname)" >> $GITHUB_ENV

-    - name: Update RootFS cache
-      # Use a bash shell so we can use the same syntax for environment variable
-      # access regardless of the host operating system
-      shell: bash
-      run: $GITHUB_WORKSPACE/Scripts/CI_FetchRootFS.py
-
-    - name : submodule checkout
-      # Need to update submodules
-      run: |
-        git submodule sync --recursive
-        git submodule update --init --depth 1
-
-    - name: Clean Build Environment
-      run: rm -Rf ${{runner.workspace}}/build
-
-    - name: Create Build Environment
-      # Some projects don't allow in-source building, so create a separate build directory
-      # We'll use this as our working directory for all subsequent commands
-      run: cmake -E make_directory ${{runner.workspace}}/build
+    - name: Setup Build Environment
+      uses: ./.github/workflows/setup-env

    - name: Configure CMake
-      # Use a bash shell so we can use the same syntax for environment variable
-      # access regardless of the host operating system
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      # Note the current convention is to use the -S and -B options here to specify source
-      # and build directories, but this is only available with CMake 3.13 and higher.
-      # The CMake binaries on the Github Actions machines are (as of this writing) 3.12
-      run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -G Ninja -DENABLE_LTO=False -DENABLE_ASSERTIONS=True -DENABLE_X86_HOST_DEBUG=True
+      run: |
+        cmake -S . -B build -DCMAKE_BUILD_TYPE=$BUILD_TYPE -G Ninja -DENABLE_LTO=False \
+          -DENABLE_ASSERTIONS=True -DENABLE_X86_HOST_DEBUG=True
+
+    # These steps make a lot of noise but rarely fail.
+    # Put them in a separate step to make normal build logs easier to parse
+    - name: Noisy Build Targets
+      run: cmake --build build --target asm_files 32bit_asm_files JemallocLibs Catch2 vixl cephes_128bit

    - name: Build
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      # Execute the build.  You can specify a specific target with "--target <NAME>"
-      run: cmake --build . --config $BUILD_TYPE
+      run: cmake --build build

+    # ASM tests
    - name: ASM Tests
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      # Execute the unit tests
-      run: cmake --build . --config $BUILD_TYPE --target asm_tests
-
-    - name: ASM Test Results move
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_ASM.log || true
-
-    - name: Truncate test results
-      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      # Cap out the log files at 20M in case something crash spins and dumps fault text
-      # ASM tests get quite close to 10MB
-      run: truncate --size="<20M" ${{runner.workspace}}/build/Testing/Temporary/LastTest_*.log || true
-
-    - name: Set runner name
-      if: ${{ always() }}
-      run: echo "runner_name=$(hostname)" >> $GITHUB_ENV
+      uses: ./.github/workflows/test
+      with:
+        target: asm_tests

    - name: Upload results
      if: ${{ always() }}
-      uses: 'actions/upload-artifact@v4'
+      uses: actions/upload-artifact@v6
      timeout-minutes: 1
      with:
-        name: Results-${{ env.runner_name }}
-        path: ${{runner.workspace}}/build/Testing/Temporary/LastTest_*.log
+        name: Results-${{ env.runner_name }}-${{ env.runner_label }}
+        path: results/*.log
        retention-days: 3

@@ -23,123 +23,56 @@ jobs:
      fail-fast: false

    steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v6
+      with:
+        fetch-depth: '0'
+        fetch-tags: 'true'

-    - name: Set runner label
-      run: echo "runner_label=${{ matrix.arch[1] }}" >> $GITHUB_ENV
-
-    - name: Set rootfs paths
+    - name: Set runner info
      run: |
-        echo "FEX_ROOTFS_MOUNT=/mnt/AutoNFS/rootfs/" >> $GITHUB_ENV
-        echo "FEX_ROOTFS_PATH=$HOME/Rootfs/" >> $GITHUB_ENV
-        echo "FEX_ROOTFS=$HOME/Rootfs/" >> $GITHUB_ENV
+        echo "runner_label=${{ matrix.arch[1] }}" >> $GITHUB_ENV
+        echo "runner_name=$(hostname)" >> $GITHUB_ENV

-    - name: Update RootFS cache
-      # Use a bash shell so we can use the same syntax for environment variable
-      # access regardless of the host operating system
-      shell: bash
-      run: $GITHUB_WORKSPACE/Scripts/CI_FetchRootFS.py
+    - name: Setup Build Environment
+      uses: ./.github/workflows/setup-env

-    - name : submodule checkout
-      # Need to update submodules
+    - name: Set VIXL_SIM_ENABLED
      run: |
-        git submodule sync --recursive
-        git submodule update --init --depth 1
-
-    - name: Clean Build Environment
-      run: rm -Rf ${{runner.workspace}}/build
-
-    - name: Create Build Environment
-      # Some projects don't allow in-source building, so create a separate build directory
-      # We'll use this as our working directory for all subsequent commands
-      run: cmake -E make_directory ${{runner.workspace}}/build
-
-    - name: Set vixl_sim x86
-      if: matrix.arch[1] == 'x64'
-      run: |
-        echo "VIXL_SIM_ENABLED=True" >> $GITHUB_ENV
-
-    - name: Set vixl_sim Arm64
-      if: matrix.arch[1] == 'ARM64'
-      run: |
-        echo "VIXL_SIM_ENABLED=False" >> $GITHUB_ENV
+        case '${{ matrix.arch[1] }}' in
+          x64) _sim=True ;;
+          ARM64) _sim=False ;;
+        esac
+        echo "VIXL_SIM_ENABLED=$_sim" >> $GITHUB_ENV

    - name: Configure CMake
-      # Use a bash shell so we can use the same syntax for environment variable
-      # access regardless of the host operating system
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      # Note the current convention is to use the -S and -B options here to specify source
-      # and build directories, but this is only available with CMake 3.13 and higher.
-      # The CMake binaries on the Github Actions machines are (as of this writing) 3.12
-      run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -G Ninja -DENABLE_VIXL_SIMULATOR=$VIXL_SIM_ENABLED -DENABLE_VIXL_DISASSEMBLER=True -DENABLE_LTO=False -DENABLE_ASSERTIONS=True -DENABLE_X86_HOST_DEBUG=True
+      run: |
+        cmake -S . -B build -DCMAKE_BUILD_TYPE=$BUILD_TYPE -G Ninja -DENABLE_VIXL_SIMULATOR=$VIXL_SIM_ENABLED \
+          -DENABLE_VIXL_DISASSEMBLER=True -DENABLE_LTO=False -DENABLE_ASSERTIONS=True -DENABLE_X86_HOST_DEBUG=True

    - name: Build
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
      env:
        FEX_DISABLETELEMETRY: 1
-      # Execute the build.  You can specify a specific target with "--target <NAME>"
-      run: cmake --build . --config $BUILD_TYPE --target CodeSizeValidation instcountci_test_files
+      run: cmake --build build --target CodeSizeValidation instcountci_test_files

    - name: Instruction Count Tests
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      # Execute the unit tests
-      run: cmake --build . --config $BUILD_TYPE --target instcountci_tests
-
-    - name: Instruction Count Test Results move
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_InstCountCI.log || true
+      uses: ./.github/workflows/test
+      with:
+        target: instcountci_tests

    - name: Update local repo instcount
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: cmake --build . --config $BUILD_TYPE --target instcountci_update_tests
+      run: cmake --build build --target instcountci_update_tests

-    - name: Get instcountCI diff
+    - name: Check InstCountCI diff
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{github.workspace}}/
-      run: git diff --output=${{runner.workspace}}/build/InstCountCI.diff
-
-    - name: Check if InstCountCI Diff exists
-      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{github.workspace}}/
-      # Check if the file is empty
-      run: sh -c "! test -s ${{runner.workspace}}/build/InstCountCI.diff"
-
-    - name: Truncate test results
-      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      # Cap out the log files at 20M in case something crash spins and dumps fault text
-      # ASM tests get quite close to 10MB
-      run: truncate --size="<20M" ${{runner.workspace}}/build/Testing/Temporary/LastTest_*.log || true
-
-    - name: Set runner name
-      if: ${{ always() }}
-      run: echo "runner_name=$(hostname)" >> $GITHUB_ENV
+      run: git --no-pager diff --exit-code HEAD

    - name: Upload results
      if: ${{ always() }}
-      uses: 'actions/upload-artifact@v4'
+      uses: actions/upload-artifact@v6
      timeout-minutes: 1
      with:
-        name: Results-${{ env.runner_name }}
-        path: ${{runner.workspace}}/build/Testing/Temporary/LastTest_*.log
+        name: Results-${{ env.runner_name }}-${{ env.runner_label }}
+        path: results/*.log
        retention-days: 3
-
-    - name: Upload results InstCountCI
-      if: ${{ always() }}
-      uses: 'actions/upload-artifact@v4'
-      timeout-minutes: 1
-      with:
-        name: Results-${{ env.runner_name }}-instcountci
-        path: ${{runner.workspace}}/build/InstCountCI.diff
-        retention-days: 3
-
@@ -20,7 +20,10 @@ jobs:
      fail-fast: false

    steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v6
+      with:
+        fetch-depth: '0'
+        fetch-tags: 'true'

    - name: Set runner label
      run: echo "runner_label=${{ matrix.arch[1] }}" >> $GITHUB_ENV
@@ -28,73 +31,23 @@ jobs:
    - name: Add MingGW to PATH
      run: echo "$HOME/llvm-mingw/build/bin/" >> $GITHUB_PATH

-    - name: Set CC x86
-      if: matrix.arch[1] == 'x64'
+    - name: Set CC
      run: |
-        echo "MINGW_TRIPLE=x86_64-w64-mingw32" >> $GITHUB_ENV
+        case '${{ matrix.arch[1] }}' in
+          x64) _cpu=x86_64 ;;
+          ARM64) _cpu=aarch64 ;;
+          ARM64EC) _cpu=arm64ec ;;
+        esac
+        echo "MINGW_TRIPLE=${_cpu}-w64-mingw32" >> $GITHUB_ENV

-    - name: Set CC Arm64
-      if: matrix.arch[1] == 'ARM64'
-      run: |
-        echo "MINGW_TRIPLE=aarch64-w64-mingw32" >> $GITHUB_ENV
-
-    - name: Set CC Arm64EC
-      if: matrix.arch[1] == 'ARM64EC'
-      run: |
-        echo "MINGW_TRIPLE=arm64ec-w64-mingw32" >> $GITHUB_ENV
-
-    - name: Set rootfs paths
-      run: |
-        echo "FEX_ROOTFS_MOUNT=/mnt/AutoNFS/rootfs/" >> $GITHUB_ENV
-        echo "FEX_ROOTFS_PATH=$HOME/Rootfs/" >> $GITHUB_ENV
-        echo "FEX_ROOTFS=$HOME/Rootfs/" >> $GITHUB_ENV
-
-    - name: Update RootFS cache
-      # Use a bash shell so we can use the same syntax for environment variable
-      # access regardless of the host operating system
-      shell: bash
-      run: $GITHUB_WORKSPACE/Scripts/CI_FetchRootFS.py
-
-    - name : submodule checkout
-      # Need to update submodules
-      run: |
-        git submodule sync --recursive
-        git submodule update --init --depth 1
-
-    - name: Clean Build Environment
-      run: rm -Rf ${{runner.workspace}}/build
-
-    - name: Create Build Environment
-      # Some projects don't allow in-source building, so create a separate build directory
-      # We'll use this as our working directory for all subsequent commands
-      run: cmake -E make_directory ${{runner.workspace}}/build
+    - name: Setup Build Environment
+      uses: ./.github/workflows/setup-env

    - name: Configure CMake
-      # Use a bash shell so we can use the same syntax for environment variable
-      # access regardless of the host operating system
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      # Note the current convention is to use the -S and -B options here to specify source
-      # and build directories, but this is only available with CMake 3.13 and higher.
-      # The CMake binaries on the Github Actions machines are (as of this writing) 3.12
-      run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DCMAKE_TOOLCHAIN_FILE=$GITHUB_WORKSPACE/Data/CMake/toolchain_mingw.cmake -DMINGW_TRIPLE=$MINGW_TRIPLE -G Ninja -DENABLE_LTO=False -DENABLE_ASSERTIONS=True -DENABLE_X86_HOST_DEBUG=True -DBUILD_TESTING=False -DCMAKE_INSTALL_PREFIX=${{runner.workspace}}/build/install
+      run: |
+        cmake -S . -B build -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DCMAKE_TOOLCHAIN_FILE=$GITHUB_WORKSPACE/Data/CMake/toolchain_mingw.cmake \
+        -DMINGW_TRIPLE=$MINGW_TRIPLE -G Ninja -DENABLE_LTO=False -DENABLE_ASSERTIONS=True -DENABLE_X86_HOST_DEBUG=True -DBUILD_TESTING=False \
+        -DCMAKE_INSTALL_PREFIX="$PWD"/build/install

    - name: Build
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      # Execute the build.  You can specify a specific target with "--target <NAME>"
-      run: cmake --build . --config $BUILD_TYPE
-
-    - name: Set runner name
-      if: ${{ always() }}
-      run: echo "runner_name=$(hostname)" >> $GITHUB_ENV
-
-    - name: Upload results
-      if: ${{ always() }}
-      uses: 'actions/upload-artifact@v4'
-      timeout-minutes: 1
-      with:
-        name: Results-${{ env.runner_name }}
-        path: ${{runner.workspace}}/build/Testing/Temporary/LastTest_*.log
-        retention-days: 3
-
+      run: cmake --build build
@@ -1,7 +1,7 @@
-# Inspired by LLVM's pr-code-format.yml at 
+# Inspired by LLVM's pr-code-format.yml at
 # https://github.com/llvm/llvm-project/blob/main/.github/workflows/pr-code-format.yml

-name: "Check code formatting"
+name: Check code formatting
 on:
  pull_request:
    branches:
@@ -13,7 +13,7 @@ jobs:
    if: github.repository == 'FEX-Emu/FEX'

    steps:
-      - name: Fetch FEX sources
+      - name: Checkout
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.sha }}
@@ -27,18 +27,13 @@ jobs:
          deepen_length: 500

      - name: Get changed files
-        id: changed-files
-        uses: step-security/changed-files@3dbe17c78367e7d60f00d78ae6781a35be47b4a1 # v45.0.1
-        with:
-          separator: ","
-          skip_initial_fetch: true
-
-      - name: "Listed files"
-        env:
-          CHANGED_FILES: ${{ steps.changed-files.outputs.all_changed_files }}
        run: |
-          echo "Formatting files:"
-          echo "$CHANGED_FILES"
+          BASE=$(git merge-base main HEAD)
+          FILES=$(git diff --name-only "$BASE" | tr '\n' ',' | sed 's/,$//')
+          echo "CHANGED_FILES=$FILES" >> $GITHUB_ENV
+
+          echo "Changed files:"
+          echo "$FILES"

      - name: Check git-clang-format-19 exists
        run: which git-clang-format-19
@@ -46,24 +41,23 @@ jobs:
      - name: Setup Python env
        uses: actions/setup-python@v4
        with:
-          python-version: '3.11'
-          cache: 'pip'
-          cache-dependency-path: './External/code-format-helper/requirements_formatting.txt'
+          python-version: 3.11
+          cache: pip
+          cache-dependency-path: ./External/code-format-helper/requirements_formatting.txt

      - name: Install python dependencies
        run: pip install -r ./External/code-format-helper/requirements_formatting.txt

      - name: Run code formatter
        env:
-          CLANG_FORMAT_PATH: 'git-clang-format-19'
+          CLANG_FORMAT_PATH: git-clang-format-19
          GITHUB_PR_NUMBER: ${{ github.event.pull_request.number }}
          START_REV: ${{ github.event.pull_request.base.sha }}
          END_REV: ${{ github.event.pull_request.head.sha }}
-          CHANGED_FILES: ${{ steps.changed-files.outputs.all_changed_files }}
        run: |
          python ./External/code-format-helper/code-format-helper.py \
-            --repo "FEX-emu/FEX" \
-            --issue-number $GITHUB_PR_NUMBER \
-            --start-rev $START_REV \
-            --end-rev $END_REV \
+            --repo "FEX-Emu/FEX" \
+            --issue-number "$GITHUB_PR_NUMBER" \
+            --start-rev "$START_REV" \
+            --end-rev "$END_REV" \
            --changed-files "$CHANGED_FILES"
@@ -0,0 +1,33 @@
+name: Setup Build Environment
+description: Setup RootFS and build environment
+
+inputs:
+  setup-rootfs:
+    description: 'Whether or not to set up the rootfs'
+    default: true
+
+runs:
+  using: composite
+  steps:
+    - name: Set rootfs paths
+      if: ${{ inputs.setup-rootfs == 'true' }}
+      shell: bash
+      run: |
+        echo "FEX_ROOTFS_MOUNT=/mnt/AutoNFS/rootfs/" >> $GITHUB_ENV
+        echo "FEX_ROOTFS_PATH=$HOME/Rootfs/" >> $GITHUB_ENV
+        echo "FEX_ROOTFS=$HOME/Rootfs/" >> $GITHUB_ENV
+
+    - name: Update RootFS cache
+      if: ${{ inputs.setup-rootfs == 'true' }}
+      shell: bash
+      run: python3 Scripts/CI_FetchRootFS.py
+
+    - name: Checkout Submodules
+      shell: bash
+      run: |
+        git submodule sync --recursive
+        git submodule update --init --depth 1
+
+    - name: Clean Build Environment
+      shell: bash
+      run: rm -Rf build
@@ -9,6 +9,7 @@ on:
      - main

 env:
+  DEBIAN_FRONTEND: noninteractive
  BUILD_TYPE: Release
  CC: clang
  CXX: clang++
@@ -22,20 +23,18 @@ jobs:
      fail-fast: false

    steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v6
+      with:
+        fetch-depth: '0'
+        fetch-tags: 'true'

    - name: Set runner label
      run: echo "runner_label=${{ matrix.arch[1] }}" >> $GITHUB_ENV

-    - name : submodule checkout
-      run: |
-        git submodule sync --recursive
-        git submodule update --init --depth 1
-
-    - name: Clean Build Environment
-      run: |
-        rm -Rf ${{runner.workspace}}/build
-        cmake -E make_directory ${{runner.workspace}}/build
+    - name: Setup Build Environment
+      uses: ./.github/workflows/setup-env
+      with:
+        setup-rootfs: false

    # Setup everything required.
    - name : distrobox setup
@@ -49,31 +48,25 @@ jobs:
          libstdc++-14-dev-i386-cross libgcc-14-dev-i386-cross \
          libstdc++-14-dev-amd64-cross libgcc-14-dev-amd64-cross

-    - name: Create Build Environment
-      run: distrobox enter --name steamrt4 -- cmake -E make_directory ${{runner.workspace}}/build
-
    - name: Configure CMake
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: distrobox enter --name steamrt4 -- cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -G Ninja -DBUILD_STEAM_SUPPORT=True -DENABLE_LTO=True -DENABLE_ASSERTIONS=False -DBUILD_THUNKS=True -DBUILD_FEXCONFIG=False -DBUILD_TESTING=False -DENABLE_CLANG_THUNKS=True -DUSE_LINKER=lld -DCMAKE_INSTALL_PREFIX=/usr
+      run: |
+        distrobox enter --name steamrt4 -- cmake -S . -B build -DCMAKE_BUILD_TYPE=$BUILD_TYPE \
+          -G Ninja -DBUILD_STEAM_SUPPORT=True -DENABLE_LTO=True -DENABLE_ASSERTIONS=False -DBUILD_THUNKS=True \
+          -DBUILD_FEXCONFIG=False -DBUILD_TESTING=False -DENABLE_CLANG_THUNKS=True -DUSE_LINKER=lld \
+          -DCMAKE_INSTALL_PREFIX=/usr

    - name: Build
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      run: distrobox enter --name steamrt4 -- cmake --build . --config $BUILD_TYPE
+      run: distrobox enter --name steamrt4 -- cmake --build build

    - name: install
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      env:
-        DESTDIR: ${{runner.workspace}}/install
-      run: distrobox enter --name steamrt4 -- cmake --build . --config $BUILD_TYPE -t install
+      run: DESTDIR="$PWD"/install distrobox enter --name steamrt4 -- cmake --build build -t install
+
    - name: Upload libraries
-      uses: 'actions/upload-artifact@v4'
+      uses: actions/upload-artifact@v6
      timeout-minutes: 1
      with:
        overwrite: true
        name: steamrt4_steampipe_depot
-        path: ${{runner.workspace}}/install/*
-        retention-days: 1
+        path: ${{ github.workspace }}/install/*
+        retention-days: 60
        compression-level: 9
@@ -0,0 +1,21 @@
+name: Run Test and Store Logs
+description: Run a test and store the log.
+inputs:
+  target:
+    description: 'The test target to run'
+    required: true
+
+runs:
+  using: composite
+  steps:
+    - name: Run Tests
+      shell: bash
+      run: cmake --build build --target ${{ inputs.target }}
+
+    - name: Move and Truncate Results
+      if: ${{ always() }}
+      shell: bash
+      run: |
+        mkdir -p results
+        mv build/Testing/Temporary/LastTest.log results/${{ inputs.target }}.log || true
+        truncate --size="<20M" results/${{ inputs.target }}.log || true
@@ -25,111 +25,59 @@ jobs:
      fail-fast: false

    steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v6
+      with:
+        fetch-depth: '0'
+        fetch-tags: 'true'

-    - name: Set runner label
-      run: echo "runner_label=${{ matrix.arch[1] }}" >> $GITHUB_ENV
-
-    - name: Set rootfs paths
+    - name: Set runner info
      run: |
-        echo "FEX_ROOTFS_MOUNT=/mnt/AutoNFS/rootfs/" >> $GITHUB_ENV
-        echo "FEX_ROOTFS_PATH=$HOME/Rootfs/" >> $GITHUB_ENV
-        echo "FEX_ROOTFS=$HOME/Rootfs/" >> $GITHUB_ENV
+        echo "runner_label=${{ matrix.arch[1] }}" >> $GITHUB_ENV
+        echo "runner_name=$(hostname)" >> $GITHUB_ENV

-    - name: Update RootFS cache
-      # Use a bash shell so we can use the same syntax for environment variable
-      # access regardless of the host operating system
-      shell: bash
-      run: $GITHUB_WORKSPACE/Scripts/CI_FetchRootFS.py
-
-    - name : submodule checkout
-      # Need to update submodules
-      run: |
-        git submodule sync --recursive
-        git submodule update --init --depth 1
-
-    - name: Clean Build Environment
-      run: rm -Rf ${{runner.workspace}}/build
-
-    - name: Create Build Environment
-      # Some projects don't allow in-source building, so create a separate build directory
-      # We'll use this as our working directory for all subsequent commands
-      run: cmake -E make_directory ${{runner.workspace}}/build
+    - name: Setup Build Environment
+      uses: ./.github/workflows/setup-env

    - name: Configure CMake
-      # Use a bash shell so we can use the same syntax for environment variable
-      # access regardless of the host operating system
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      # Note the current convention is to use the -S and -B options here to specify source
-      # and build directories, but this is only available with CMake 3.13 and higher.
-      # The CMake binaries on the Github Actions machines are (as of this writing) 3.12
-      run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -G Ninja -DENABLE_VIXL_SIMULATOR=True -DENABLE_VIXL_DISASSEMBLER=True -DENABLE_LTO=False -DENABLE_ASSERTIONS=True -DENABLE_X86_HOST_DEBUG=True
+      run: |
+        cmake -S . -B build -DCMAKE_BUILD_TYPE=$BUILD_TYPE -G Ninja -DENABLE_VIXL_SIMULATOR=True -DENABLE_LTO=False \
+          -DENABLE_VIXL_DISASSEMBLER=True -DENABLE_ASSERTIONS=True -DENABLE_X86_HOST_DEBUG=True
+
+    # These steps make a lot of noise but rarely fail.
+    # Put them in a separate step to make normal build logs easier to parse
+    - name: Noisy Build Targets
+      run: cmake --build build --target asm_files 32bit_asm_files JemallocLibs Catch2 vixl cephes_128bit

    - name: Build
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      # Execute the build.  You can specify a specific target with "--target <NAME>"
-      run: cmake --build . --config $BUILD_TYPE
+      run: cmake --build build

    - name: ASM Tests - SVE256
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      # Execute the unit tests
-      run: cmake --build . --config $BUILD_TYPE --target asm_tests
-
-    - name: ASM Test SVE256 Results move
      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_ASM_SVE256Bit.log || true
+      uses: ./.github/workflows/test
+      with:
+        target: asm_tests

    - name: ASM Tests - SVE128
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
+      if: ${{ always() }}
+      uses: ./.github/workflows/test
      env:
        FEX_FORCESVEWIDTH: "128"
-      # Execute the unit tests
-      run: cmake --build . --config $BUILD_TYPE --target asm_tests
-
-    - name: ASM Test 128-bit Results move
-      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_ASM_SVE128Bit.log || true
+      with:
+        target: asm_tests

    - name: ASM Tests - ASIMD
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
+      if: ${{ always() }}
+      uses: ./.github/workflows/test
      env:
        FEX_HOSTFEATURES: "disablesve"
-      # Execute the unit tests
-      run: cmake --build . --config $BUILD_TYPE --target asm_tests
-
-    - name: ASM Test ASIMD Results move
-      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: mv ${{runner.workspace}}/build/Testing/Temporary/LastTest.log ${{runner.workspace}}/build/Testing/Temporary/LastTest_ASM_ASIMD.log || true
-
-    - name: Truncate test results
-      if: ${{ always() }}
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      # Cap out the log files at 20M in case something crash spins and dumps fault text
-      # ASM tests get quite close to 10MB
-      run: truncate --size="<20M" ${{runner.workspace}}/build/Testing/Temporary/LastTest_*.log || true
-
-    - name: Set runner name
-      if: ${{ always() }}
-      run: echo "runner_name=$(hostname)" >> $GITHUB_ENV
+      with:
+        target: asm_tests

    - name: Upload results
      if: ${{ always() }}
-      uses: 'actions/upload-artifact@v4'
+      uses: actions/upload-artifact@v6
      timeout-minutes: 1
      with:
-        name: Results-${{ env.runner_name }}
-        path: ${{runner.workspace}}/build/Testing/Temporary/LastTest_*.log
+        name: Results-${{ env.runner_name }}-${{ env.runner_label }}
+        path: results/*.log
        retention-days: 3
-
@@ -0,0 +1,35 @@
+name: Wine DLL Build
+description: Build a wow64 or arm64ec Wine DLL
+
+inputs:
+  target:
+    description: 'The target (arm64ec or wow64)'
+    required: true
+
+runs:
+  using: composite
+  steps:
+    - name: Clean Build Environment
+      shell: bash
+      run: rm -Rf build_${{ inputs.target }}
+
+    - name: Configure CMake
+      shell: bash
+      run: |
+        case "${{ inputs.target }}" in
+          wow64) _cc=aarch64 ;;
+          arm64ec) _cc=arm64ec ;;
+        esac
+
+        cmake -S . -B build_${{ inputs.target }} -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DCMAKE_TOOLCHAIN_FILE=Data/CMake/toolchain_mingw.cmake \
+          -DMINGW_TRIPLE=${_cc}-w64-mingw32 -DCMAKE_INSTALL_LIBDIR=/usr/lib/wine/aarch64-windows -G Ninja \
+          -DENABLE_LTO=False -DENABLE_ASSERTIONS=False -DENABLE_JEMALLOC_GLIBC_ALLOC=False \
+          -DBUILD_TESTING=False -DCMAKE_INSTALL_PREFIX=/usr -DTUNE_ARCH=generic -DTUNE_CPU=none
+
+    - name: Build
+      shell: bash
+      run: cmake --build build_${{ inputs.target }}
+
+    - name: Install
+      shell: bash
+      run: DESTDIR="$PWD"/install cmake --build build_${{ inputs.target }} -t install
@@ -17,72 +17,39 @@ jobs:
      fail-fast: false

    steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v6
+      with:
+        fetch-depth: '0'
+        fetch-tags: 'true'

    - name: Add MingGW to PATH
      run: echo "$HOME/llvm-mingw/build/bin/" >> $GITHUB_PATH

-    - name : submodule checkout
+    - name: Checkout Submodules
      # Need to update submodules
      run: |
        git submodule sync --recursive
        git submodule update --init --depth 1

    - name: Clean install directory
-      run: |
-        rm -Rf ${{runner.workspace}}/build_install
-        mkdir ${{runner.workspace}}/build_install
+      run: rm -Rf install

-    - name: Clean Build Environment
-      run: |
-        rm -Rf ${{runner.workspace}}/build_arm64ec
-        rm -Rf ${{runner.workspace}}/build_wow64
+    - name: Build (wow64)
+      uses: ./.github/workflows/wine_build
+      with:
+        target: wow64

-    - name: Create Build Environment arm64ec
-      run: |
-        cmake -E make_directory ${{runner.workspace}}/build_arm64ec
-        cmake -E make_directory ${{runner.workspace}}/build_wow64
-
-    - name: Configure CMake arm64ec
-      shell: bash
-      working-directory: ${{runner.workspace}}/build_arm64ec
-      run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DCMAKE_TOOLCHAIN_FILE=$GITHUB_WORKSPACE/Data/CMake/toolchain_mingw.cmake -DMINGW_TRIPLE=arm64ec-w64-mingw32 -DCMAKE_INSTALL_LIBDIR=/usr/lib/wine/aarch64-windows -G Ninja -DENABLE_LTO=False -DENABLE_ASSERTIONS=False -DENABLE_JEMALLOC_GLIBC_ALLOC=False -DCMAKE_INSTALL_PREFIX=/usr -DBUILD_TESTING=False -DCMAKE_INSTALL_PREFIX=/usr
-
-    - name: Configure CMake wow64
-      shell: bash
-      working-directory: ${{runner.workspace}}/build_wow64
-      run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DCMAKE_TOOLCHAIN_FILE=$GITHUB_WORKSPACE/Data/CMake/toolchain_mingw.cmake -DMINGW_TRIPLE=aarch64-w64-mingw32 -DCMAKE_INSTALL_LIBDIR=/usr/lib/wine/aarch64-windows -G Ninja -DENABLE_LTO=False -DENABLE_ASSERTIONS=False -DENABLE_JEMALLOC_GLIBC_ALLOC=False -DCMAKE_INSTALL_PREFIX=/usr -DBUILD_TESTING=False -DCMAKE_INSTALL_PREFIX=/usr
-
-    - name: Build arm64ec
-      working-directory: ${{runner.workspace}}/build_arm64ec
-      shell: bash
-      run: cmake --build . --config $BUILD_TYPE
-
-    - name: install arm64ec
-      working-directory: ${{runner.workspace}}/build_arm64ec
-      shell: bash
-      env:
-        DESTDIR: ${{runner.workspace}}/build_install
-      run: cmake --build . --config $BUILD_TYPE -t install
-
-    - name: Build wow64
-      working-directory: ${{runner.workspace}}/build_wow64
-      shell: bash
-      run: cmake --build . --config $BUILD_TYPE
-
-    - name: install wow64
-      working-directory: ${{runner.workspace}}/build_wow64
-      shell: bash
-      env:
-        DESTDIR: ${{runner.workspace}}/build_install
-      run: cmake --build . --config $BUILD_TYPE -t install
+    - name: Build (arm64ec)
+      uses: ./.github/workflows/wine_build
+      with:
+        target: arm64ec

    - name: Upload libraries
-      uses: 'actions/upload-artifact@v4'
+      uses: actions/upload-artifact@v6
      timeout-minutes: 1
      with:
        overwrite: true
        name: wine_dll_artifacts
-        path: ${{runner.workspace}}/build_install/usr/lib/wine/aarch64-windows/lib*.dll
+        path: ${{ github.workspace }}/install/usr/lib/wine/aarch64-windows/lib*.dll
        retention-days: 60
        compression-level: 9
@@ -11,3 +11,5 @@ out/
 .vs/
 *.pyc
 .cache
+.idea/
+CMakeLists.txt.user
@@ -0,0 +1,32 @@
+variables:
+    DEBIAN_FRONTEND: noninteractive
+    GIT_SUBMODULE_STRATEGY: recursive
+    GIT_DEPTH: 0
+    CC: clang
+    CXX: clang++
+
+aarch64:
+  image: registry.gitlab.steamos.cloud/steamrt/steamrt4/sdk/arm64:4.0.20251117.183306
+  tags:
+    - docker
+    - linux
+    - arm64
+    - aarch64
+  script:
+    - apt-get -y update
+    - apt-get install -y
+        git cmake ninja-build ccache
+        lld clang
+        libclang-dev llvm-dev
+        libstdc++-14-dev-i386-cross libgcc-14-dev-i386-cross
+        libstdc++-14-dev-amd64-cross libgcc-14-dev-amd64-cross
+    - cmake -E make_directory build/
+    - cmake -DCMAKE_BUILD_TYPE=Release -G Ninja -DBUILD_STEAM_SUPPORT=True -DENABLE_LTO=True -DENABLE_ASSERTIONS=False -DBUILD_THUNKS=True -DBUILD_FEXCONFIG=False -DBUILD_TESTING=False -DENABLE_CLANG_THUNKS=True -DUSE_LINKER=lld -DCMAKE_INSTALL_PREFIX=/usr -DTUNE_ARCH=armv8.2-a -DTUNE_CPU=none . -B build/
+    - cmake --build build/ --config Release
+    - DESTDIR=$(pwd)/install/ cmake --build build/ --config Release -t install
+
+  artifacts:
+    name: "steamrt artifacts"
+    untracked: false
+    paths:
+      - install/
@@ -17,9 +17,6 @@
  shallow = true
 	path = External/fex-gcc-target-tests-bins
 	url = https://github.com/FEX-Emu/fex-gcc-target-tests-bins.git
-[submodule "External/jemalloc"]
-	path = External/jemalloc
-	url = https://github.com/FEX-Emu/jemalloc.git
 [submodule "External/fmt"]
 	path = External/fmt
 	url = https://github.com/fmtlib/fmt.git
@@ -32,10 +29,6 @@
 [submodule "External/Catch2"]
 	path = External/Catch2
 	url = https://github.com/catchorg/Catch2.git
-[submodule "External/robin-map"]
-	shallow = true
-	path = External/robin-map
-	url = https://github.com/FEX-Emu/robin-map.git
 [submodule "External/Vulkan-Headers"]
 	shallow = true
 	path = External/Vulkan-Headers
@@ -49,3 +42,13 @@
 [submodule "External/range-v3"]
 	path = External/range-v3
 	url = https://github.com/ericniebler/range-v3.git
+[submodule "External/zydis"]
+	shallow = true
+	path = External/zydis
+	url = https://github.com/zyantific/zydis.git
+[submodule "External/unordered_dense"]
+	path = External/unordered_dense
+	url = https://github.com/martinus/unordered_dense.git
+[submodule "External/rpmalloc"]
+	path = External/rpmalloc
+	url = https://github.com/FEX-Emu/rpmalloc.git
@@ -1,47 +1,50 @@
 cmake_minimum_required(VERSION 3.14)
 project(FEX C CXX ASM)

-INCLUDE (CheckIncludeFiles)
-CHECK_INCLUDE_FILES ("gdb/jit-reader.h" HAVE_GDB_JIT_READER_H)
+include(CheckIncludeFiles)
+check_include_files("gdb/jit-reader.h" HAVE_GDB_JIT_READER_H)

-option(BUILD_FEX_LINUX_TESTS "Build FEXLinuxTests, requires x86 compiler" FALSE)
+option(BUILD_FEX_LINUX_TESTS "Build FEXLinuxTests (requires x86 compiler)" FALSE)
 option(BUILD_THUNKS "Build thunks" FALSE)
 option(BUILD_FEXCONFIG "Build FEXConfig" TRUE)
 option(ENABLE_CLANG_THUNKS "Build thunks with clang" TRUE)
-option(ENABLE_IWYU "Enables include what you use program" FALSE)
+option(ENABLE_IWYU "Enable the Include What You Use sanitizer" FALSE)
 option(ENABLE_LTO "Enable LTO with compilation" TRUE)
 option(ENABLE_XRAY "Enable building with LLVM X-Ray" FALSE)
-set(USE_LINKER "" CACHE STRING "Allow overriding the linker path directly")
-option(ENABLE_UBSAN "Enables Clang UBSAN" FALSE)
-option(ENABLE_ASAN "Enables Clang ASAN" FALSE)
-option(ENABLE_TSAN "Enables Clang TSAN" FALSE)
-option(ENABLE_COVERAGE "Enables Coverage" FALSE)
-option(ENABLE_ASSERTIONS "Enables assertions in build" FALSE)
-option(ENABLE_GDB_SYMBOLS "Enables GDBSymbols integration support" ${HAVE_GDB_JIT_READER_H})
-option(ENABLE_STRICT_WERROR "Enables stricter -Werror for CI" FALSE)
-option(ENABLE_WERROR "Enables -Werror" FALSE)
-option(ENABLE_JEMALLOC "Enables jemalloc allocator" TRUE)
-option(ENABLE_JEMALLOC_GLIBC_ALLOC "Enables jemalloc glibc allocator" TRUE)
-option(ENABLE_OFFLINE_TELEMETRY "Enables FEX offline telemetry" TRUE)
-option(ENABLE_COMPILE_TIME_TRACE "Enables time trace compile option" FALSE)
-option(ENABLE_LIBCXX "Enables LLVM libc++" FALSE)
-option(ENABLE_CCACHE "Enables ccache for compile caching" TRUE)
-option(ENABLE_VIXL_SIMULATOR "Enable use of VIXL simulator for emulation (only useful for CI testing)" FALSE)
-option(ENABLE_VIXL_DISASSEMBLER "Enables debug disassembler output with VIXL" FALSE)
-option(USE_LEGACY_BINFMTMISC "Uses legacy method of setting up binfmt_misc" FALSE)
-option(ENABLE_FEXCORE_PROFILER "Enables use of the FEXCore timeline profiling capabilities" FALSE)
-set (FEXCORE_PROFILER_BACKEND "gpuvis" CACHE STRING "Set which backend to use for the FEXCore profiler (gpuvis, tracy)")
+set(USE_LINKER "" CACHE STRING "Path to a custom linker program")
+option(ENABLE_UBSAN "Enable the Clang Undefined Behavior Sanitizer" FALSE)
+option(ENABLE_ASAN "Enable the Clang Address Sanitizer" FALSE)
+option(ENABLE_TSAN "Enable the Clang Thread Sanitizer" FALSE)
+option(ENABLE_COVERAGE "Enable Code Coverage" FALSE)
+option(ENABLE_ASSERTIONS "Enable debug assertions" FALSE)
+option(ENABLE_GDB_SYMBOLS "Enable GDBSymbols integration support" ${HAVE_GDB_JIT_READER_H})
+option(ENABLE_STRICT_WERROR "Enable stricter -Werror" FALSE)
+option(ENABLE_WERROR "Enable -Werror" FALSE)
+option(ENABLE_FEX_ALLOCATOR "Enable allocator for FEX" TRUE)
+option(ENABLE_JEMALLOC_GLIBC_ALLOC "Enable jemalloc glibc allocator" TRUE)
+option(ENABLE_OFFLINE_TELEMETRY "Enable FEX offline telemetry" TRUE)
+option(ENABLE_COMPILE_TIME_TRACE "Enable time trace compile option" FALSE)
+option(ENABLE_LIBCXX "Use LLVM's libc++ instead of the GNU libstdc++" FALSE)
+option(ENABLE_CCACHE "Enable ccache for build caching" TRUE)
+option(ENABLE_VIXL_SIMULATOR "Use the VIXL simulator for emulation (only useful for CI testing)" FALSE)
+option(ENABLE_VIXL_DISASSEMBLER "Enable debug disassembler output with VIXL" FALSE)
+option(ENABLE_ZYDIS "Enable x86/x86-64 guest disassembler output with Zydis" FALSE)
+option(USE_LEGACY_BINFMTMISC "Use legacy method of setting up binfmt_misc" FALSE)
+option(ENABLE_FEXCORE_PROFILER "Enable FEXCore's timeline profiling capabilities" FALSE)
+set(FEXCORE_PROFILER_BACKEND "gpuvis" CACHE STRING "Set which backend to use for FEXCore's profiler")
+set_property(CACHE FEXCORE_PROFILER_BACKEND PROPERTY STRINGS gpuvis tracy)
 option(ENABLE_GLIBC_ALLOCATOR_HOOK_FAULT "Enables glibc memory allocation hooking with fault for CI testing")
-option(USE_PDB_DEBUGINFO "Builds debug info in PDB format" FALSE)
-option(BUILD_STEAM_SUPPORT "Builds FEX for integration into Steam" FALSE)
+option(USE_PDB_DEBUGINFO "Build debug info in PDB format" FALSE)
+option(BUILD_STEAM_SUPPORT "Enable Steam integration" FALSE)
+
+set(X86_32_TOOLCHAIN_FILE "${CMAKE_CURRENT_SOURCE_DIR}/Data/CMake/toolchain_x86_32.cmake" CACHE FILEPATH "Toolchain file for the (cross-)compiler targeting i686")
+set(X86_64_TOOLCHAIN_FILE "${CMAKE_CURRENT_SOURCE_DIR}/Data/CMake/toolchain_x86_64.cmake" CACHE FILEPATH "Toolchain file for the (cross-)compiler targeting x86_64")
+set(X86_DEV_ROOTFS "/" CACHE FILEPATH "Path to the sysroot used for cross-compiling for i686 and x86_64")
+set(DATA_DIRECTORY "" CACHE PATH "Global data directory (override)")
+set(HOSTLIBS_DATA_DIRECTORY "" CACHE PATH "Global data directory (override)")

-set (X86_32_TOOLCHAIN_FILE "${CMAKE_CURRENT_SOURCE_DIR}/Data/CMake/toolchain_x86_32.cmake" CACHE FILEPATH "Toolchain file for the (cross-)compiler targeting i686")
-set (X86_64_TOOLCHAIN_FILE "${CMAKE_CURRENT_SOURCE_DIR}/Data/CMake/toolchain_x86_64.cmake" CACHE FILEPATH "Toolchain file for the (cross-)compiler targeting x86_64")
-set (X86_DEV_ROOTFS "/" CACHE FILEPATH "Path to the sysroot used for cross-compiling for i686 and x86_64")
-set (DATA_DIRECTORY "" CACHE PATH "Global data directory (override)")
-set (HOSTLIBS_DATA_DIRECTORY "" CACHE PATH "Global data directory (override)")
 if (NOT DATA_DIRECTORY)
-  set (DATA_DIRECTORY "${CMAKE_INSTALL_PREFIX}/share/fex-emu")
+  set(DATA_DIRECTORY "${CMAKE_INSTALL_PREFIX}/share/fex-emu")
 endif()

 include(GNUInstallDirs)
@@ -49,47 +52,95 @@ if (NOT HOSTLIBS_DATA_DIRECTORY)
  set(HOSTLIBS_DATA_DIRECTORY "${CMAKE_INSTALL_FULL_LIBDIR}/fex-emu")
 endif()

-string(FIND ${CMAKE_BASE_NAME} mingw CONTAINS_MINGW)
-if (NOT CONTAINS_MINGW EQUAL -1)
-  message (STATUS "Mingw build")
-  set (MINGW_BUILD TRUE)
-  set (ENABLE_JEMALLOC TRUE)
-  set (ENABLE_JEMALLOC_GLIBC_ALLOC FALSE)
+## Platform Checks ##
+# Only 64-bit Linux and Windows are supported
+
+# NB: SIZEOF_VOID_P is in bytes, not bits
+# On 32-bit systems this is set to 4
+if (NOT CMAKE_SIZEOF_VOID_P EQUAL 8)
+  message(FATAL_ERROR "Unsupported pointer size ${CMAKE_SIZEOF_VOID_P}."
+    " FEX only supports 64-bit (8-byte pointer) systems."
+    " If you believe this is in error, file an issue.")
+elseif (NOT (WIN32 OR CMAKE_SYSTEM_NAME STREQUAL "Linux"))
+  message(FATAL_ERROR "Unsupported system type ${CMAKE_SYSTEM_NAME}."
+    " FEX only supports Linux and Windows."
+    " If you believe this is in error, file an issue.")
 endif()

-if (NOT MINGW_BUILD)
-  message (STATUS "Clang version ${CMAKE_CXX_COMPILER_VERSION}")
-  set (CLANG_MINIMUM_VERSION 13.0)
+## Compiler Checks ##
+# GCC and MSVC are unsupported
+if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
+  message(FATAL_ERROR "FEX doesn't support GCC! Use Clang instead.")
+elseif (MSVC)
+  message(FATAL_ERROR "FEX doesn't support MSVC! Use Clang on MinGW instead.")
+elseif (MINGW)
+  message(STATUS "Building for MinGW")
+  set(ENABLE_FEX_ALLOCATOR TRUE)
+  set(ENABLE_JEMALLOC_GLIBC_ALLOC FALSE)
+else ()
+  message(STATUS "Clang version ${CMAKE_CXX_COMPILER_VERSION}")
+  set(CLANG_MINIMUM_VERSION 13.0)
  if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS ${CLANG_MINIMUM_VERSION})
-    message (FATAL_ERROR "Clang version too old for FEX. Need at least ${CLANG_MINIMUM_VERSION} but has ${CMAKE_CXX_COMPILER_VERSION}")
+    message(FATAL_ERROR "Clang version too old for FEX. Need at least ${CLANG_MINIMUM_VERSION} but has ${CMAKE_CXX_COMPILER_VERSION}")
  endif()
 endif()

+## Architecture Handling ##
+string(TOLOWER ${CMAKE_SYSTEM_PROCESSOR} processor)
+if (processor MATCHES "x86|amd64")
+  option(ENABLE_X86_HOST_DEBUG "Enables compiling on x86_64 host" FALSE)
+  if (NOT ENABLE_X86_HOST_DEBUG)
+    message(FATAL_ERROR
+      " FEX doesn't support compiling for x86-64 hosts!"
+      " This is /only/ a supported configuration for FEX CI and nothing else!")
+  else()
+    message(STATUS "x86_64 debug build")
+  endif()
+
+  set(ARCHITECTURE_x86_64 1)
+  add_compile_definitions(ARCHITECTURE_x86_64=1)
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mcx16")
+elseif (processor MATCHES "^aarch64|^arm64|^armv8\.*")
+  set(ARCHITECTURE_arm64 1)
+  add_compile_definitions(ARCHITECTURE_arm64=1)
+
+  # arm64ec needs to define both arm64 and arm64ec
+  if (processor MATCHES "^arm64ec")
+    set(ARCHITECTURE_arm64ec 1)
+    add_compile_definitions(ARCHITECTURE_arm64ec=1)
+  endif()
+endif()
+
+if (NOT (ARCHITECTURE_arm64 OR ARCHITECTURE_arm64ec OR ARCHITECTURE_x86_64))
+  message(FATAL_ERROR "Unsupported processor type ${processor}."
+    " If you believe this is in error, file an issue.")
+endif()
+
 if (BUILD_STEAM_SUPPORT)
-  add_definitions(-DFEX_STEAM_SUPPORT=1)
+  add_compile_definitions(FEX_STEAM_SUPPORT=1)
 endif()

 if (ENABLE_FEXCORE_PROFILER)
-  add_definitions(-DENABLE_FEXCORE_PROFILER=1)
+  add_compile_definitions(ENABLE_FEXCORE_PROFILER=1)
  string(TOUPPER "${FEXCORE_PROFILER_BACKEND}" FEXCORE_PROFILER_BACKEND)

  if (FEXCORE_PROFILER_BACKEND STREQUAL "GPUVIS")
-    add_definitions(-DFEXCORE_PROFILER_BACKEND=1)
+    add_compile_definitions(FEXCORE_PROFILER_BACKEND=1)
  elseif (FEXCORE_PROFILER_BACKEND STREQUAL "TRACY")
-    add_definitions(-DFEXCORE_PROFILER_BACKEND=2)
-    add_definitions(-DTRACY_ENABLE=1)
+    add_compile_definitions(FEXCORE_PROFILER_BACKEND=2)
+    add_compile_definitions(TRACY_ENABLE=1)
    # Required so that Tracy will only start in the selected guest application
-    add_definitions(-DTRACY_MANUAL_LIFETIME=1)
-    add_definitions(-DTRACY_DELAYED_INIT=1)
+    add_compile_definitions(TRACY_MANUAL_LIFETIME=1)
+    add_compile_definitions(TRACY_DELAYED_INIT=1)
    # This interferes with FEX's signal handling
-    add_definitions(-DTRACY_NO_CRASH_HANDLER=1)
+    add_compile_definitions(TRACY_NO_CRASH_HANDLER=1)
    # Tracy can gather call stack samples in regular intervals, but this
    # isn't useful for us since it would usually sample opaque JIT code
-    add_definitions(-DTRACY_NO_SAMPLING=1)
+    add_compile_definitions(TRACY_NO_SAMPLING=1)
    # This pulls in libbacktrace which allocators in global constructors (before FEX can set up its allocator hooks)
-    add_definitions(-DTRACY_NO_CALLSTACK=1)
-    if (MINGW_BUILD)
-      message(FATAL_ERROR "Tracy profiler not supported")
+    add_compile_definitions(TRACY_NO_CALLSTACK=1)
+    if (MINGW)
+      message(FATAL_ERROR "Tracy profiler not supported on MinGW")
    endif()
  else()
    message(FATAL_ERROR "Unknown FEXCore profiler backend ${FEXCORE_PROFILER_BACKEND}")
@@ -101,7 +152,7 @@ if (ENABLE_JEMALLOC_GLIBC_ALLOC AND ENABLE_GLIBC_ALLOCATOR_HOOK_FAULT)
 endif()

 if (ENABLE_GLIBC_ALLOCATOR_HOOK_FAULT)
-  add_definitions(-DGLIBC_ALLOCATOR_FAULT=1)
+  add_compile_definitions(GLIBC_ALLOCATOR_FAULT=1)
 endif()

 # uninstall target
@@ -116,9 +167,10 @@ if(NOT TARGET uninstall)
 endif()

 # These options are meant for package management
-set (TUNE_CPU "native" CACHE STRING "Override the CPU the build is tuned for")
-set (TUNE_ARCH "generic" CACHE STRING "Override the Arch the build is tuned for")
-set (OVERRIDE_VERSION "detect" CACHE STRING "Override the FEX version in the format of <MMYY>{.<REV>}")
+set(TUNE_CPU "native" CACHE STRING "Override the CPU the build is tuned for")
+set(TUNE_ARCH "generic" CACHE STRING "Override the Arch the build is tuned for")
+set(OVERRIDE_VERSION "detect" CACHE STRING "Override the FEX version")
+set(OVERRIDE_HASH "detect" CACHE STRING "Override the FEX git hash")

 string(TOUPPER "${CMAKE_BUILD_TYPE}" CMAKE_BUILD_TYPE)
 if (CMAKE_BUILD_TYPE MATCHES "DEBUG")
@@ -127,15 +179,14 @@ endif()

 if (ENABLE_ASSERTIONS)
  message(STATUS "Assertions enabled")
-  add_definitions(-DASSERTIONS_ENABLED=1)
+  add_compile_definitions(ASSERTIONS_ENABLED=1)
 endif()

 if (ENABLE_GDB_SYMBOLS)
  message(STATUS "GDBSymbols support enabled")
-  add_definitions(-DGDB_SYMBOLS_ENABLED=1)
+  add_compile_definitions(GDB_SYMBOLS_ENABLED=1)
 endif()

-
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/Bin)
@@ -145,33 +196,7 @@ cmake_policy(SET CMP0083 NEW) # Follow new PIE policy
 include(CheckPIESupported)
 check_pie_supported()

-if (ENABLE_LTO)
-  set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
-else()
-  set(CMAKE_INTERPROCEDURAL_OPTIMIZATION FALSE)
-endif()
-
-if (CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64")
-  option(ENABLE_X86_HOST_DEBUG "Enables compiling on x86_64 host" FALSE)
-  if (NOT ENABLE_X86_HOST_DEBUG)
-    message(FATAL_ERROR
-    " FEX-Emu doesn't support compiling for x86-64 hosts!"
-    " This is /only/ a supported configuration for FEX CI and nothing else!")
-  endif()
-  set(_M_X86_64 1)
-  add_definitions(-D_M_X86_64=1)
-  set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mcx16")
-endif()
-
-if (CMAKE_SYSTEM_PROCESSOR MATCHES "^aarch64|^arm64|^armv8\.*")
-  set(_M_ARM_64 1)
-  add_definitions(-D_M_ARM_64=1)
-endif()
-
-if (CMAKE_SYSTEM_PROCESSOR MATCHES "^arm64ec")
-  set(_M_ARM_64EC 1)
-  add_definitions(-D_M_ARM_64EC=1)
-endif()
+set(CMAKE_INTERPROCEDURAL_OPTIMIZATION ${ENABLE_LTO})

 include(CheckCXXSourceCompiles)
 set(CMAKE_REQUIRED_FLAGS "-std=c++11 -Wattributes -Werror=attributes")
@@ -187,23 +212,33 @@ check_cxx_source_compiles(
  HAS_CLANG_PRESERVE_ALL)
 unset(CMAKE_REQUIRED_FLAGS)
 if (HAS_CLANG_PRESERVE_ALL)
-  if (MINGW_BUILD)
+  if (MINGW)
    message(STATUS "Ignoring broken clang::preserve_all support")
    set(HAS_CLANG_PRESERVE_ALL FALSE)
  else()
    message(STATUS "Has clang::preserve_all")
  endif()
-endif ()
-
-if (_M_ARM_64 AND HAS_CLANG_PRESERVE_ALL)
-  add_definitions("-DFEX_PRESERVE_ALL_ATTR=__attribute__((preserve_all))" "-DFEX_HAS_PRESERVE_ALL_ATTR=1")
-else()
-  add_definitions("-DFEX_PRESERVE_ALL_ATTR=" "-DFEX_HAS_PRESERVE_ALL_ATTR=0")
 endif()

+if (ARCHITECTURE_arm64 AND HAS_CLANG_PRESERVE_ALL)
+  add_compile_definitions("FEX_PRESERVE_ALL_ATTR=__attribute__((preserve_all))" "FEX_HAS_PRESERVE_ALL_ATTR=1")
+else()
+  add_compile_definitions("FEX_PRESERVE_ALL_ATTR=" "FEX_HAS_PRESERVE_ALL_ATTR=0")
+endif()
+
+check_cxx_source_compiles(
+  "
+  #define _GNU_SOURCE
+  #include <errno.h>
+  int main() {
+  return program_invocation_name == nullptr;
+  }"
+  HAS_PROGRAM_INVOCATION_NAME)
+add_compile_definitions("HAS_PROGRAM_INVOCATION_NAME=${HAS_PROGRAM_INVOCATION_NAME}")
+
 if (ENABLE_VIXL_SIMULATOR)
  # We can run the simulator on both x86-64 or AArch64 hosts
-  add_definitions(-DVIXL_SIMULATOR=1 -DVIXL_INCLUDE_SIMULATOR_AARCH64=1)
+  add_compile_definitions(VIXL_SIMULATOR=1 VIXL_INCLUDE_SIMULATOR_AARCH64=1)
 endif()

 if (ENABLE_CCACHE)
@@ -224,7 +259,7 @@ if (ENABLE_COMPILE_TIME_TRACE)
  link_libraries(-ftime-trace)
 endif()

-set (PTHREAD_LIB pthread)
+set(PTHREAD_LIB pthread)

 if (USE_LINKER)
  message(STATUS "Overriding linker to: ${USE_LINKER}")
@@ -239,7 +274,7 @@ endif()

 if (NOT ENABLE_OFFLINE_TELEMETRY)
  # Disable FEX offline telemetry entirely if asked
-  add_definitions(-DFEX_DISABLE_TELEMETRY=1)
+  add_compile_definitions(FEX_DISABLE_TELEMETRY=1)
 endif()

 if (ENABLE_UBSAN)
@@ -250,13 +285,13 @@ if (ENABLE_UBSAN)
  # that are regularly access unaligned.
  # function: syscalls cast function pointers to void (*)(unsigned long...), causing warnings
  # related to this access.
-  add_definitions(-DENABLE_UBSAN=1)
+  add_compile_definitions(ENABLE_UBSAN=1)
  add_compile_options(-fno-omit-frame-pointer -fsanitize=undefined -fno-sanitize=alignment -fno-sanitize=function -fno-sanitize-recover=undefined)
  link_libraries(-fno-omit-frame-pointer -fsanitize=undefined -fno-sanitize=alignment -fno-sanitize=function -fno-sanitize-recover=undefined)
 endif()

 if (ENABLE_ASAN)
-  add_definitions(-DENABLE_ASAN=1)
+  add_compile_definitions(ENABLE_ASAN=1)
  add_compile_options(-fno-omit-frame-pointer -fsanitize=address -fsanitize-address-use-after-scope)
  link_libraries(-fno-omit-frame-pointer -fsanitize=address -fsanitize-address-use-after-scope)
 endif()
@@ -276,20 +311,20 @@ if (ENABLE_JEMALLOC_GLIBC_ALLOC)
  # Required for thunks to work.
  # All host native libraries will use this allocator, while *most* other FEX internal allocations will use the other jemalloc allocator.
  add_subdirectory(External/jemalloc_glibc/)
-elseif (NOT MINGW_BUILD)
-  message (STATUS
+elseif (NOT MINGW)
+  message(STATUS
    " jemalloc glibc allocator disabled!\n"
    " This is not a recommended configuration!\n"
    " This will very explicitly break thunk execution!\n"
    " Use at your own risk!")
 endif()

-if (ENABLE_JEMALLOC)
-  # The jemalloc subproject that all FEXCore fextl objects allocate through.
-  add_subdirectory(External/jemalloc/)
-elseif (NOT MINGW_BUILD)
+if (ENABLE_FEX_ALLOCATOR)
+  # The rpmalloc subproject that all FEXCore fextl objects allocate through.
+  add_subdirectory(External/rpmalloc/)
+elseif (NOT MINGW)
  message (STATUS
-    " jemalloc disabled!\n"
+    " FEX allocator is disabled!\n"
    " This is not a recommended configuration!\n"
    " This will very explicitly break 32-bit application execution!\n"
    " Use at your own risk!")
@@ -300,45 +335,64 @@ if (USE_PDB_DEBUGINFO)
  add_link_options(-g -Wl,--pdb=)
 endif()

-set (CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -fno-omit-frame-pointer")
-set (CMAKE_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_LINKER_FLAGS_RELWITHDEBINFO} -fno-omit-frame-pointer")
+set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -fno-omit-frame-pointer")
+set(CMAKE_LINKER_FLAGS_RELWITHDEBINFO "${CMAKE_LINKER_FLAGS_RELWITHDEBINFO} -fno-omit-frame-pointer")

-set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -fomit-frame-pointer")
-set (CMAKE_LINKER_FLAGS_RELEASE "${CMAKE_LINKER_FLAGS_RELEASE} -fomit-frame-pointer")
+set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -fomit-frame-pointer")
+set(CMAKE_LINKER_FLAGS_RELEASE "${CMAKE_LINKER_FLAGS_RELEASE} -fomit-frame-pointer")

-include_directories(External/robin-map/include/)
+## Modules ##
+list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/Data/CMake/)
+
+include(LinkerGC)
+
+## Externals ##
+
+find_package(unordered_dense QUIET CONFIG)
+if (NOT unordered_dense_FOUND)
+  add_subdirectory(External/unordered_dense)
+endif()

 include(CTest)
 if (BUILD_TESTING OR ENABLE_VIXL_DISASSEMBLER OR ENABLE_VIXL_SIMULATOR)
  add_subdirectory(External/vixl/)
-  include_directories(SYSTEM External/vixl/src/)
+endif()
+
+if (ENABLE_ZYDIS)
+  find_package(Zycore 1.5 MODULE QUIET)
+  find_package(Zydis 4.0 MODULE QUIET)
+
+  if (TARGET Zydis::Zydis AND TARGET Zycore::Zycore)
+    message(STATUS "Using system Zydis")
+  else()
+    set(ZYDIS_BUILD_TOOLS OFF CACHE BOOL "" FORCE)
+    set(ZYDIS_BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)
+
+    message(STATUS "Using bundled Zydis")
+    add_subdirectory(External/zydis/)
+  endif()
 endif()

 if (ENABLE_FEXCORE_PROFILER AND FEXCORE_PROFILER_BACKEND STREQUAL "TRACY")
  add_subdirectory(External/tracy)
 endif()

-if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
-  # This means we were attempted to get compiled with GCC
-  message(FATAL_ERROR "FEX doesn't support getting compiled with GCC!")
-endif()
-
-find_package(PkgConfig REQUIRED)
 find_package(Python 3.9 REQUIRED COMPONENTS Interpreter)

 set(BUILD_SHARED_LIBS OFF)

-pkg_search_module(xxhash IMPORTED_TARGET xxhash libxxhash)
-if (TARGET PkgConfig::xxhash AND NOT CMAKE_CROSSCOMPILING)
-  add_library(xxHash::xxhash ALIAS PkgConfig::xxhash)
-else()
+if (NOT CMAKE_CROSSCOMPILING)
+  find_package(xxhash MODULE QUIET)
+endif()
+
+if (NOT TARGET xxHash::xxhash)
  set(XXHASH_BUNDLED_MODE TRUE)
  set(XXHASH_BUILD_XXHSUM FALSE)
  add_subdirectory(External/xxhash/cmake_unofficial/)
 endif()

-add_definitions(-Wno-trigraphs)
-add_definitions(-DGLOBAL_DATA_DIRECTORY="${DATA_DIRECTORY}/")
+add_compile_options(-Wno-trigraphs)
+add_compile_definitions(GLOBAL_DATA_DIRECTORY="${DATA_DIRECTORY}/")

 if (BUILD_TESTING)
  find_package(Catch2 3 QUIET)
@@ -369,7 +423,6 @@ if (NOT range-v3_FOUND)
 endif()

 add_subdirectory(External/tiny-json/)
-include_directories(External/tiny-json/)

 include_directories(Source/)
 include_directories("${CMAKE_BINARY_DIR}/Source/")
@@ -412,7 +465,7 @@ if (NOT TUNE_ARCH STREQUAL "generic")
 endif()

 if (TUNE_CPU STREQUAL "native")
-  if(_M_ARM_64)
+  if(ARCHITECTURE_arm64)
    if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 999999.0)
      # Clang 12.0 fixed the -mcpu=native bug with mixed big.little implementers
      # Clang can not currently check for native Apple M1 type in hypervisor. Currently disabled
@@ -453,8 +506,54 @@ elseif (NOT TUNE_CPU STREQUAL "none")
  endif()
 endif()

+set(GIT_DESCRIBE_STRING "FEX-Unknown")
+
+if (OVERRIDE_VERSION STREQUAL "detect")
+  find_package(Git)
+
+  if (GIT_FOUND)
+    execute_process(
+      COMMAND ${GIT_EXECUTABLE} describe --abbrev=7
+      WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
+      OUTPUT_VARIABLE GIT_DESCRIBE_STRING
+      ERROR_QUIET
+      OUTPUT_STRIP_TRAILING_WHITESPACE)
+  endif()
+else()
+  set(GIT_DESCRIBE_STRING "${OVERRIDE_VERSION}")
+endif()
+
+set(GIT_HASH "Unknown")
+
+if (OVERRIDE_HASH STREQUAL "detect")
+  find_package(Git)
+
+  if (GIT_FOUND)
+    execute_process(
+      COMMAND ${GIT_EXECUTABLE} rev-parse HEAD
+      WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
+      OUTPUT_VARIABLE GIT_HASH
+      ERROR_QUIET
+      OUTPUT_STRIP_TRAILING_WHITESPACE)
+  endif()
+else()
+  set(GIT_HASH "${OVERRIDE_HASH}")
+endif()
+
+message(STATUS "FEX version: ${GIT_DESCRIBE_STRING}")
+message(STATUS "FEX commit: ${GIT_HASH}")
+
+# Prepends 0x to every two-character sequence in the hash,
+# OR the final character of the hash, to plumb it for C++ usage. e.g.:
+# -DOVERRIDE_HASH=123456aa => 0x12, 0x34, 0x56, 0xaa,
+# -DOVERRIDE_HASH=12345678a => 0x12, 0x34, 0x56, 0x78, 0xa,
+string(REGEX
+  REPLACE "(..|.$)" "0x\\1, "
+  GIT_HASH_ARRAY "${GIT_HASH}")
+
 if (ENABLE_IWYU)
-  find_program(IWYU_EXE "iwyu")
+  find_program(IWYU_EXE
+    NAMES iwyu include-what-you-use)
  if (IWYU_EXE)
    message(STATUS "IWYU enabled")
    set(CMAKE_CXX_INCLUDE_WHAT_YOU_USE "${IWYU_EXE}")
@@ -466,7 +565,7 @@ add_compile_options(-Wall)
 if (BUILD_TESTING)
  message(STATUS "Unit tests are enabled")

-  set (TEST_JOB_COUNT "" CACHE STRING "Override number of parallel jobs to use while running tests")
+  set(TEST_JOB_COUNT "" CACHE STRING "Override number of parallel jobs to use while running tests")
  if (TEST_JOB_COUNT)
    message(STATUS "Running tests with ${TEST_JOB_COUNT} jobs")
  elseif(CMAKE_VERSION VERSION_LESS "3.29")
@@ -481,7 +580,7 @@ add_subdirectory(FEXHeaderUtils/)
 add_subdirectory(CodeEmitter/)
 add_subdirectory(FEXCore/)

-if (_M_ARM_64 AND NOT MINGW_BUILD AND NOT BUILD_STEAM_SUPPORT)
+if (ARCHITECTURE_arm64 AND NOT MINGW AND NOT BUILD_STEAM_SUPPORT)
  # Binfmt_misc files must be installed prior to Source/ installs
  add_subdirectory(Data/binfmts/)
 endif()
@@ -507,7 +606,7 @@ if (BUILD_TESTING)
 endif()

 if (BUILD_THUNKS)
-  set (FEX_PROJECT_SOURCE_DIR ${PROJECT_SOURCE_DIR})
+  set(FEX_PROJECT_SOURCE_DIR ${PROJECT_SOURCE_DIR})
  add_subdirectory(ThunkLibs/Generator)

  # Thunk targets for both host libraries and IDE integration
@@ -534,8 +633,7 @@ if (BUILD_THUNKS)
      "-DX86_DEV_ROOTFS=${X86_DEV_ROOTFS}"
    INSTALL_COMMAND ""
    BUILD_ALWAYS ON
-    DEPENDS thunkgen
-  )
+    DEPENDS thunkgen)

  ExternalProject_Add(guest-libs-32
    PREFIX guest-libs-32
@@ -553,38 +651,31 @@ if (BUILD_THUNKS)
      "-DX86_DEV_ROOTFS=${X86_DEV_ROOTFS}"
    INSTALL_COMMAND ""
    BUILD_ALWAYS ON
-    DEPENDS thunkgen
-  )
+    DEPENDS thunkgen)

  install(
-    CODE "MESSAGE(\"-- Installing: guest-libs\")"
+    CODE "message(\"-- Installing: guest-libs\")"
    CODE "
-    EXECUTE_PROCESS(COMMAND ${CMAKE_COMMAND} --build . --target install
-    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/Guest
-    )"
+      execute_process(COMMAND ${CMAKE_COMMAND} --build . --target install
+        WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/Guest)"
    DEPENDS guest-libs
-    COMPONENT Runtime
-  )
+    COMPONENT Runtime)

  install(
-    CODE "MESSAGE(\"-- Installing: guest-libs-32\")"
+    CODE "message(\"-- Installing: guest-libs-32\")"
    CODE "
-    EXECUTE_PROCESS(COMMAND ${CMAKE_COMMAND} --build . --target install
-    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/Guest_32
-    )"
+      execute_process(COMMAND ${CMAKE_COMMAND} --build . --target install
+        WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/Guest_32)"
    DEPENDS guest-libs-32
-    COMPONENT Runtime
-  )
+    COMPONENT Runtime)

  add_custom_target(uninstall_guest-libs
    COMMAND ${CMAKE_COMMAND} "--build" "." "--target" "uninstall"
-    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/Guest
-  )
+    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/Guest)

  add_custom_target(uninstall_guest-libs-32
    COMMAND ${CMAKE_COMMAND} "--build" "." "--target" "uninstall"
-    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/Guest_32
-  )
+    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/Guest_32)

  add_dependencies(uninstall uninstall_guest-libs)
  add_dependencies(uninstall uninstall_guest-libs-32)
@@ -593,29 +684,3 @@ endif()
 if (BUILD_STEAM_SUPPORT)
  add_subdirectory(Source/Steam/)
 endif()
-
-set(FEX_VERSION_MAJOR "0")
-set(FEX_VERSION_MINOR "0")
-set(FEX_VERSION_PATCH "0")
-
-if (OVERRIDE_VERSION STREQUAL "detect")
-  find_package(Git)
-  if (GIT_FOUND)
-    execute_process(
-      COMMAND ${GIT_EXECUTABLE} describe --abbrev=0
-      WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
-      OUTPUT_VARIABLE GIT_DESCRIBE_STRING
-      RESULT_VARIABLE GIT_ERROR
-      ERROR_QUIET
-      OUTPUT_STRIP_TRAILING_WHITESPACE
-    )
-
-    if (NOT ${GIT_ERROR} EQUAL 0)
-      # Likely built in a way that doesn't have tags
-      # Setup a version tag that is unknown
-      set(GIT_DESCRIBE_STRING "FEX-0000")
-    endif()
-  endif()
-else()
-  set(GIT_DESCRIBE_STRING "FEX-${OVERRIDE_VERSION}")
-endif()
@@ -129,4 +129,4 @@
 			"variables": []
 		}
 	]
-}
+}
@@ -53,6 +53,7 @@ public:
    if (!CurrentAlignment) {
      return;
    }
+    std::memset(CurrentOffset, 0, Size - CurrentAlignment);
    CurrentOffset += Size - CurrentAlignment;
  }

@@ -15,13 +15,10 @@ foreach(GEN_CONFIG_SRC ${GEN_CONFIG_SOURCES})
  get_filename_component(CONFIG_NAME ${GEN_CONFIG_SRC} NAME_WLE)

  # Configure it
-  configure_file(
-    ${GEN_CONFIG_SRC}
-    ${CMAKE_BINARY_DIR}/Data/AppConfig/${CONFIG_NAME})
+  configure_file(${GEN_CONFIG_SRC} ${CMAKE_BINARY_DIR}/Data/AppConfig/${CONFIG_NAME})

  # Then install the configured json
-  install(
-    FILES ${CMAKE_BINARY_DIR}/Data/AppConfig/${CONFIG_NAME}
+  install(FILES ${CMAKE_BINARY_DIR}/Data/AppConfig/${CONFIG_NAME}
    DESTINATION ${DATA_DIRECTORY}/AppConfig/
    COMPONENT Runtime)
 endforeach()
@@ -0,0 +1,23 @@
+# SPDX-License-Identifier: MIT
+
+if (CMAKE_CROSSCOMPILING)
+    return()
+endif()
+
+include(FindPackageHandleStandardArgs)
+
+find_package(Zycore QUIET CONFIG)
+
+if (Zycore_CONSIDERED_CONFIGS)
+    find_package_handle_standard_args(Zycore CONFIG_MODE)
+else()
+    find_package(PkgConfig QUIET)
+    pkg_search_module(Zycore QUIET IMPORTED_TARGET zycore)
+    find_package_handle_standard_args(Zycore
+        REQUIRED_VARS zycore_LINK_LIBRARIES
+        VERSION_VAR zycore_VERSION)
+
+    if (TARGET PkgConfig::zycore)
+      add_library(Zycore::Zycore ALIAS PkgConfig::zycore)
+    endif()
+endif()
@@ -0,0 +1,23 @@
+# SPDX-License-Identifier: MIT
+
+if (CMAKE_CROSSCOMPILING)
+    return()
+endif()
+
+include(FindPackageHandleStandardArgs)
+
+find_package(Zydis QUIET CONFIG)
+
+if (Zydis_CONSIDERED_CONFIGS)
+    find_package_handle_standard_args(Zydis CONFIG_MODE)
+else()
+    find_package(PkgConfig QUIET)
+    pkg_search_module(Zydis QUIET IMPORTED_TARGET zydis)
+    find_package_handle_standard_args(Zydis
+        REQUIRED_VARS zydis_LINK_LIBRARIES
+        VERSION_VAR zydis_VERSION)
+
+    if (TARGET PkgConfig::zydis)
+      add_library(Zydis::Zydis ALIAS PkgConfig::zydis)
+    endif()
+endif()
@@ -0,0 +1,18 @@
+# SPDX-License-Identifier: MIT
+
+include(FindPackageHandleStandardArgs)
+
+find_package(PkgConfig QUIET)
+pkg_search_module(xxhash QUIET IMPORTED_TARGET xxhash libxxhash)
+find_package_handle_standard_args(xxhash
+    REQUIRED_VARS xxhash_LINK_LIBRARIES
+    VERSION_VAR xxhash_VERSION
+)
+
+if (xxhash_FOUND AND NOT TARGET xxHash::xxhash)
+    if (TARGET PkgConfig::xxhash)
+        add_library(xxHash::xxhash ALIAS PkgConfig::xxhash)
+    else()
+        add_library(xxHash::xxhash ALIAS xxhash)
+    endif()
+endif()
@@ -0,0 +1,15 @@
+# SPDX-License-Identifier: MIT
+
+# This applies some common linker options that reduce code size and linking time in Release mode. Namely:
+# --gc-sections: Linktime garbage collection, discards unused sections from the final output
+# --strip-all  : Similar to running `strip`, discards the symbol table from the final output
+# --as-needed  : Only includes libraries that are actually needed in the final output.
+
+macro(LinkerGC target)
+  if (CMAKE_BUILD_TYPE MATCHES "RELEASE")
+    target_link_options(${target} PRIVATE
+      "LINKER:--gc-sections"
+      "LINKER:--strip-all"
+      "LINKER:--as-needed")
+  endif()
+endmacro()
@@ -3,13 +3,10 @@ function(GenBinFmt Name)
  get_filename_component(FMT_NAME ${Name} NAME_WE)

  # Configure it
-  configure_file(
-    ${Name}
-    ${CMAKE_BINARY_DIR}/Data/binfmts/${FMT_NAME})
+  configure_file(${Name} ${CMAKE_BINARY_DIR}/Data/binfmts/${FMT_NAME})

  # Then install the configured binfmt
-  install(
-    FILES ${CMAKE_BINARY_DIR}/Data/binfmts/${FMT_NAME}
+  install(FILES ${CMAKE_BINARY_DIR}/Data/binfmts/${FMT_NAME}
    DESTINATION ${CMAKE_INSTALL_PREFIX}/share/binfmts/
    COMPONENT Runtime)
 endfunction()
@@ -18,8 +15,7 @@ if (NOT USE_LEGACY_BINFMTMISC)
  configure_file(FEX-x86.conf.in ${CMAKE_BINARY_DIR}/Data/binfmts/FEX-x86.conf)
  configure_file(FEX-x86_64.conf.in ${CMAKE_BINARY_DIR}/Data/binfmts/FEX-x86_64.conf)

-  install(
-    FILES ${CMAKE_BINARY_DIR}/Data/binfmts/FEX-x86.conf ${CMAKE_BINARY_DIR}/Data/binfmts/FEX-x86_64.conf
+  install(FILES ${CMAKE_BINARY_DIR}/Data/binfmts/FEX-x86.conf ${CMAKE_BINARY_DIR}/Data/binfmts/FEX-x86_64.conf
    DESTINATION ${CMAKE_INSTALL_PREFIX}/lib/binfmt.d/
    COMPONENT Runtime)
 else()
@@ -1,5 +1,5 @@

-set (SRCS
+add_library(softfloat_3e STATIC
  # F80 support
  src/extF80_add.c
  src/extF80_div.c
@@ -84,7 +84,7 @@ set (SRCS
  src/s_normSubnormalF32Sig.c
  src/s_f32UIToCommonNaN.c)

-if (_M_ARM_64 AND HAS_CLANG_PRESERVE_ALL)
+if (ARCHITECTURE_arm64 AND HAS_CLANG_PRESERVE_ALL)
  list(APPEND DEFINES "-DFEXCORE_PRESERVE_ALL_ATTR=__attribute__((preserve_all));-DFEXCORE_HAS_PRESERVE_ALL_ATTR=1")
 else()
  list(APPEND DEFINES "-DFEXCORE_PRESERVE_ALL_ATTR=;-DFEXCORE_HAS_PRESERVE_ALL_ATTR=0")
@@ -92,7 +92,6 @@ endif()

 list(APPEND DEFINES "-DSOFTFLOAT_BUILTIN_CLZ=1;-DINLINE=static inline;-DINLINE_LEVEL=4;-DSOFTFLOAT_FAST_INT64=1;-DSOFTFLOAT_FAST_DIV32TO16=1;-DSOFTFLOAT_FAST_DIV64TO32=1")

-add_library(softfloat_3e STATIC ${SRCS})
 target_include_directories(softfloat_3e PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include/)
 target_include_directories(softfloat_3e PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include/SoftFloat-3e/)
 target_compile_definitions(softfloat_3e PUBLIC ${DEFINES})
@@ -1,4 +1,4 @@
-set(SRCS_128BIT
+add_library(cephes_128bit STATIC
  src/128bit/Impl.cpp
  src/128bit/atanll.c
  src/128bit/constll.c
@@ -11,7 +11,6 @@ set(SRCS_128BIT
  src/128bit/tanll.c)

 # 128-bit library
-add_library(cephes_128bit STATIC ${SRCS_128BIT})
 target_link_libraries(cephes_128bit softfloat_3e)
 target_include_directories(cephes_128bit PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include/)
 target_compile_options(cephes_128bit PRIVATE -fno-builtin)
@@ -36,71 +36,91 @@ certifi==2025.7.14 \
    # via
    #   -r requirements_formatting.txt.in
    #   requests
-cffi==1.15.1 \
-    --hash=sha256:00a9ed42e88df81ffae7a8ab6d9356b371399b91dbdf0c3cb1e84c03a13aceb5 \
-    --hash=sha256:03425bdae262c76aad70202debd780501fabeaca237cdfddc008987c0e0f59ef \
-    --hash=sha256:04ed324bda3cda42b9b695d51bb7d54b680b9719cfab04227cdd1e04e5de3104 \
-    --hash=sha256:0e2642fe3142e4cc4af0799748233ad6da94c62a8bec3a6648bf8ee68b1c7426 \
-    --hash=sha256:173379135477dc8cac4bc58f45db08ab45d228b3363adb7af79436135d028405 \
-    --hash=sha256:198caafb44239b60e252492445da556afafc7d1e3ab7a1fb3f0584ef6d742375 \
-    --hash=sha256:1e74c6b51a9ed6589199c787bf5f9875612ca4a8a0785fb2d4a84429badaf22a \
-    --hash=sha256:2012c72d854c2d03e45d06ae57f40d78e5770d252f195b93f581acf3ba44496e \
-    --hash=sha256:21157295583fe8943475029ed5abdcf71eb3911894724e360acff1d61c1d54bc \
-    --hash=sha256:2470043b93ff09bf8fb1d46d1cb756ce6132c54826661a32d4e4d132e1977adf \
-    --hash=sha256:285d29981935eb726a4399badae8f0ffdff4f5050eaa6d0cfc3f64b857b77185 \
-    --hash=sha256:30d78fbc8ebf9c92c9b7823ee18eb92f2e6ef79b45ac84db507f52fbe3ec4497 \
-    --hash=sha256:320dab6e7cb2eacdf0e658569d2575c4dad258c0fcc794f46215e1e39f90f2c3 \
-    --hash=sha256:33ab79603146aace82c2427da5ca6e58f2b3f2fb5da893ceac0c42218a40be35 \
-    --hash=sha256:3548db281cd7d2561c9ad9984681c95f7b0e38881201e157833a2342c30d5e8c \
-    --hash=sha256:3799aecf2e17cf585d977b780ce79ff0dc9b78d799fc694221ce814c2c19db83 \
-    --hash=sha256:39d39875251ca8f612b6f33e6b1195af86d1b3e60086068be9cc053aa4376e21 \
-    --hash=sha256:3b926aa83d1edb5aa5b427b4053dc420ec295a08e40911296b9eb1b6170f6cca \
-    --hash=sha256:3bcde07039e586f91b45c88f8583ea7cf7a0770df3a1649627bf598332cb6984 \
-    --hash=sha256:3d08afd128ddaa624a48cf2b859afef385b720bb4b43df214f85616922e6a5ac \
-    --hash=sha256:3eb6971dcff08619f8d91607cfc726518b6fa2a9eba42856be181c6d0d9515fd \
-    --hash=sha256:40f4774f5a9d4f5e344f31a32b5096977b5d48560c5592e2f3d2c4374bd543ee \
-    --hash=sha256:4289fc34b2f5316fbb762d75362931e351941fa95fa18789191b33fc4cf9504a \
-    --hash=sha256:470c103ae716238bbe698d67ad020e1db9d9dba34fa5a899b5e21577e6d52ed2 \
-    --hash=sha256:4f2c9f67e9821cad2e5f480bc8d83b8742896f1242dba247911072d4fa94c192 \
-    --hash=sha256:50a74364d85fd319352182ef59c5c790484a336f6db772c1a9231f1c3ed0cbd7 \
-    --hash=sha256:54a2db7b78338edd780e7ef7f9f6c442500fb0d41a5a4ea24fff1c929d5af585 \
-    --hash=sha256:5635bd9cb9731e6d4a1132a498dd34f764034a8ce60cef4f5319c0541159392f \
-    --hash=sha256:59c0b02d0a6c384d453fece7566d1c7e6b7bae4fc5874ef2ef46d56776d61c9e \
-    --hash=sha256:5d598b938678ebf3c67377cdd45e09d431369c3b1a5b331058c338e201f12b27 \
-    --hash=sha256:5df2768244d19ab7f60546d0c7c63ce1581f7af8b5de3eb3004b9b6fc8a9f84b \
-    --hash=sha256:5ef34d190326c3b1f822a5b7a45f6c4535e2f47ed06fec77d3d799c450b2651e \
-    --hash=sha256:6975a3fac6bc83c4a65c9f9fcab9e47019a11d3d2cf7f3c0d03431bf145a941e \
-    --hash=sha256:6c9a799e985904922a4d207a94eae35c78ebae90e128f0c4e521ce339396be9d \
-    --hash=sha256:70df4e3b545a17496c9b3f41f5115e69a4f2e77e94e1d2a8e1070bc0c38c8a3c \
-    --hash=sha256:7473e861101c9e72452f9bf8acb984947aa1661a7704553a9f6e4baa5ba64415 \
-    --hash=sha256:8102eaf27e1e448db915d08afa8b41d6c7ca7a04b7d73af6514df10a3e74bd82 \
-    --hash=sha256:87c450779d0914f2861b8526e035c5e6da0a3199d8f1add1a665e1cbc6fc6d02 \
-    --hash=sha256:8b7ee99e510d7b66cdb6c593f21c043c248537a32e0bedf02e01e9553a172314 \
-    --hash=sha256:91fc98adde3d7881af9b59ed0294046f3806221863722ba7d8d120c575314325 \
-    --hash=sha256:94411f22c3985acaec6f83c6df553f2dbe17b698cc7f8ae751ff2237d96b9e3c \
-    --hash=sha256:98d85c6a2bef81588d9227dde12db8a7f47f639f4a17c9ae08e773aa9c697bf3 \
-    --hash=sha256:9ad5db27f9cabae298d151c85cf2bad1d359a1b9c686a275df03385758e2f914 \
-    --hash=sha256:a0b71b1b8fbf2b96e41c4d990244165e2c9be83d54962a9a1d118fd8657d2045 \
-    --hash=sha256:a0f100c8912c114ff53e1202d0078b425bee3649ae34d7b070e9697f93c5d52d \
-    --hash=sha256:a591fe9e525846e4d154205572a029f653ada1a78b93697f3b5a8f1f2bc055b9 \
-    --hash=sha256:a5c84c68147988265e60416b57fc83425a78058853509c1b0629c180094904a5 \
-    --hash=sha256:a66d3508133af6e8548451b25058d5812812ec3798c886bf38ed24a98216fab2 \
-    --hash=sha256:a8c4917bd7ad33e8eb21e9a5bbba979b49d9a97acb3a803092cbc1133e20343c \
-    --hash=sha256:b3bbeb01c2b273cca1e1e0c5df57f12dce9a4dd331b4fa1635b8bec26350bde3 \
-    --hash=sha256:cba9d6b9a7d64d4bd46167096fc9d2f835e25d7e4c121fb2ddfc6528fb0413b2 \
-    --hash=sha256:cc4d65aeeaa04136a12677d3dd0b1c0c94dc43abac5860ab33cceb42b801c1e8 \
-    --hash=sha256:ce4bcc037df4fc5e3d184794f27bdaab018943698f4ca31630bc7f84a7b69c6d \
-    --hash=sha256:cec7d9412a9102bdc577382c3929b337320c4c4c4849f2c5cdd14d7368c5562d \
-    --hash=sha256:d400bfb9a37b1351253cb402671cea7e89bdecc294e8016a707f6d1d8ac934f9 \
-    --hash=sha256:d61f4695e6c866a23a21acab0509af1cdfd2c013cf256bbf5b6b5e2695827162 \
-    --hash=sha256:db0fbb9c62743ce59a9ff687eb5f4afbe77e5e8403d6697f7446e5f609976f76 \
-    --hash=sha256:dd86c085fae2efd48ac91dd7ccffcfc0571387fe1193d33b6394db7ef31fe2a4 \
-    --hash=sha256:e00b098126fd45523dd056d2efba6c5a63b71ffe9f2bbe1a4fe1716e1d0c331e \
-    --hash=sha256:e229a521186c75c8ad9490854fd8bbdd9a0c9aa3a524326b55be83b54d4e0ad9 \
-    --hash=sha256:e263d77ee3dd201c3a142934a086a4450861778baaeeb45db4591ef65550b0a6 \
-    --hash=sha256:ed9cb427ba5504c1dc15ede7d516b84757c3e3d7868ccc85121d9310d27eed0b \
-    --hash=sha256:fa6693661a4c91757f4412306191b6dc88c1703f780c8234035eac011922bc01 \
-    --hash=sha256:fcd131dd944808b5bdb38e6f5b53013c5aa4f334c5cad0c72742f6eba4b73db0
+cffi==2.0.0 \
+    --hash=sha256:00bdf7acc5f795150faa6957054fbbca2439db2f775ce831222b66f192f03beb \
+    --hash=sha256:07b271772c100085dd28b74fa0cd81c8fb1a3ba18b21e03d7c27f3436a10606b \
+    --hash=sha256:087067fa8953339c723661eda6b54bc98c5625757ea62e95eb4898ad5e776e9f \
+    --hash=sha256:0a1527a803f0a659de1af2e1fd700213caba79377e27e4693648c2923da066f9 \
+    --hash=sha256:0cf2d91ecc3fcc0625c2c530fe004f82c110405f101548512cce44322fa8ac44 \
+    --hash=sha256:0f6084a0ea23d05d20c3edcda20c3d006f9b6f3fefeac38f59262e10cef47ee2 \
+    --hash=sha256:12873ca6cb9b0f0d3a0da705d6086fe911591737a59f28b7936bdfed27c0d47c \
+    --hash=sha256:19f705ada2530c1167abacb171925dd886168931e0a7b78f5bffcae5c6b5be75 \
+    --hash=sha256:1cd13c99ce269b3ed80b417dcd591415d3372bcac067009b6e0f59c7d4015e65 \
+    --hash=sha256:1e3a615586f05fc4065a8b22b8152f0c1b00cdbc60596d187c2a74f9e3036e4e \
+    --hash=sha256:1f72fb8906754ac8a2cc3f9f5aaa298070652a0ffae577e0ea9bd480dc3c931a \
+    --hash=sha256:1fc9ea04857caf665289b7a75923f2c6ed559b8298a1b8c49e59f7dd95c8481e \
+    --hash=sha256:203a48d1fb583fc7d78a4c6655692963b860a417c0528492a6bc21f1aaefab25 \
+    --hash=sha256:2081580ebb843f759b9f617314a24ed5738c51d2aee65d31e02f6f7a2b97707a \
+    --hash=sha256:21d1152871b019407d8ac3985f6775c079416c282e431a4da6afe7aefd2bccbe \
+    --hash=sha256:24b6f81f1983e6df8db3adc38562c83f7d4a0c36162885ec7f7b77c7dcbec97b \
+    --hash=sha256:256f80b80ca3853f90c21b23ee78cd008713787b1b1e93eae9f3d6a7134abd91 \
+    --hash=sha256:28a3a209b96630bca57cce802da70c266eb08c6e97e5afd61a75611ee6c64592 \
+    --hash=sha256:2c8f814d84194c9ea681642fd164267891702542f028a15fc97d4674b6206187 \
+    --hash=sha256:2de9a304e27f7596cd03d16f1b7c72219bd944e99cc52b84d0145aefb07cbd3c \
+    --hash=sha256:38100abb9d1b1435bc4cc340bb4489635dc2f0da7456590877030c9b3d40b0c1 \
+    --hash=sha256:3925dd22fa2b7699ed2617149842d2e6adde22b262fcbfada50e3d195e4b3a94 \
+    --hash=sha256:3e17ed538242334bf70832644a32a7aae3d83b57567f9fd60a26257e992b79ba \
+    --hash=sha256:3e837e369566884707ddaf85fc1744b47575005c0a229de3327f8f9a20f4efeb \
+    --hash=sha256:3f4d46d8b35698056ec29bca21546e1551a205058ae1a181d871e278b0b28165 \
+    --hash=sha256:44d1b5909021139fe36001ae048dbdde8214afa20200eda0f64c068cac5d5529 \
+    --hash=sha256:45d5e886156860dc35862657e1494b9bae8dfa63bf56796f2fb56e1679fc0bca \
+    --hash=sha256:4647afc2f90d1ddd33441e5b0e85b16b12ddec4fca55f0d9671fef036ecca27c \
+    --hash=sha256:4671d9dd5ec934cb9a73e7ee9676f9362aba54f7f34910956b84d727b0d73fb6 \
+    --hash=sha256:53f77cbe57044e88bbd5ed26ac1d0514d2acf0591dd6bb02a3ae37f76811b80c \
+    --hash=sha256:5eda85d6d1879e692d546a078b44251cdd08dd1cfb98dfb77b670c97cee49ea0 \
+    --hash=sha256:5fed36fccc0612a53f1d4d9a816b50a36702c28a2aa880cb8a122b3466638743 \
+    --hash=sha256:61d028e90346df14fedc3d1e5441df818d095f3b87d286825dfcbd6459b7ef63 \
+    --hash=sha256:66f011380d0e49ed280c789fbd08ff0d40968ee7b665575489afa95c98196ab5 \
+    --hash=sha256:6824f87845e3396029f3820c206e459ccc91760e8fa24422f8b0c3d1731cbec5 \
+    --hash=sha256:6c6c373cfc5c83a975506110d17457138c8c63016b563cc9ed6e056a82f13ce4 \
+    --hash=sha256:6d02d6655b0e54f54c4ef0b94eb6be0607b70853c45ce98bd278dc7de718be5d \
+    --hash=sha256:6d50360be4546678fc1b79ffe7a66265e28667840010348dd69a314145807a1b \
+    --hash=sha256:730cacb21e1bdff3ce90babf007d0a0917cc3e6492f336c2f0134101e0944f93 \
+    --hash=sha256:737fe7d37e1a1bffe70bd5754ea763a62a066dc5913ca57e957824b72a85e205 \
+    --hash=sha256:74a03b9698e198d47562765773b4a8309919089150a0bb17d829ad7b44b60d27 \
+    --hash=sha256:7553fb2090d71822f02c629afe6042c299edf91ba1bf94951165613553984512 \
+    --hash=sha256:7a66c7204d8869299919db4d5069a82f1561581af12b11b3c9f48c584eb8743d \
+    --hash=sha256:7cc09976e8b56f8cebd752f7113ad07752461f48a58cbba644139015ac24954c \
+    --hash=sha256:81afed14892743bbe14dacb9e36d9e0e504cd204e0b165062c488942b9718037 \
+    --hash=sha256:8941aaadaf67246224cee8c3803777eed332a19d909b47e29c9842ef1e79ac26 \
+    --hash=sha256:89472c9762729b5ae1ad974b777416bfda4ac5642423fa93bd57a09204712322 \
+    --hash=sha256:8ea985900c5c95ce9db1745f7933eeef5d314f0565b27625d9a10ec9881e1bfb \
+    --hash=sha256:8eca2a813c1cb7ad4fb74d368c2ffbbb4789d377ee5bb8df98373c2cc0dee76c \
+    --hash=sha256:92b68146a71df78564e4ef48af17551a5ddd142e5190cdf2c5624d0c3ff5b2e8 \
+    --hash=sha256:9332088d75dc3241c702d852d4671613136d90fa6881da7d770a483fd05248b4 \
+    --hash=sha256:94698a9c5f91f9d138526b48fe26a199609544591f859c870d477351dc7b2414 \
+    --hash=sha256:9a67fc9e8eb39039280526379fb3a70023d77caec1852002b4da7e8b270c4dd9 \
+    --hash=sha256:9de40a7b0323d889cf8d23d1ef214f565ab154443c42737dfe52ff82cf857664 \
+    --hash=sha256:a05d0c237b3349096d3981b727493e22147f934b20f6f125a3eba8f994bec4a9 \
+    --hash=sha256:afb8db5439b81cf9c9d0c80404b60c3cc9c3add93e114dcae767f1477cb53775 \
+    --hash=sha256:b18a3ed7d5b3bd8d9ef7a8cb226502c6bf8308df1525e1cc676c3680e7176739 \
+    --hash=sha256:b1e74d11748e7e98e2f426ab176d4ed720a64412b6a15054378afdb71e0f37dc \
+    --hash=sha256:b21e08af67b8a103c71a250401c78d5e0893beff75e28c53c98f4de42f774062 \
+    --hash=sha256:b4c854ef3adc177950a8dfc81a86f5115d2abd545751a304c5bcf2c2c7283cfe \
+    --hash=sha256:b882b3df248017dba09d6b16defe9b5c407fe32fc7c65a9c69798e6175601be9 \
+    --hash=sha256:baf5215e0ab74c16e2dd324e8ec067ef59e41125d3eade2b863d294fd5035c92 \
+    --hash=sha256:c649e3a33450ec82378822b3dad03cc228b8f5963c0c12fc3b1e0ab940f768a5 \
+    --hash=sha256:c654de545946e0db659b3400168c9ad31b5d29593291482c43e3564effbcee13 \
+    --hash=sha256:c6638687455baf640e37344fe26d37c404db8b80d037c3d29f58fe8d1c3b194d \
+    --hash=sha256:c8d3b5532fc71b7a77c09192b4a5a200ea992702734a2e9279a37f2478236f26 \
+    --hash=sha256:cb527a79772e5ef98fb1d700678fe031e353e765d1ca2d409c92263c6d43e09f \
+    --hash=sha256:cf364028c016c03078a23b503f02058f1814320a56ad535686f90565636a9495 \
+    --hash=sha256:d48a880098c96020b02d5a1f7d9251308510ce8858940e6fa99ece33f610838b \
+    --hash=sha256:d68b6cef7827e8641e8ef16f4494edda8b36104d79773a334beaa1e3521430f6 \
+    --hash=sha256:d9b29c1f0ae438d5ee9acb31cadee00a58c46cc9c0b2f9038c6b0b3470877a8c \
+    --hash=sha256:d9b97165e8aed9272a6bb17c01e3cc5871a594a446ebedc996e2397a1c1ea8ef \
+    --hash=sha256:da68248800ad6320861f129cd9c1bf96ca849a2771a59e0344e88681905916f5 \
+    --hash=sha256:da902562c3e9c550df360bfa53c035b2f241fed6d9aef119048073680ace4a18 \
+    --hash=sha256:dbd5c7a25a7cb98f5ca55d258b103a2054f859a46ae11aaf23134f9cc0d356ad \
+    --hash=sha256:dd4f05f54a52fb558f1ba9f528228066954fee3ebe629fc1660d874d040ae5a3 \
+    --hash=sha256:de8dad4425a6ca6e4e5e297b27b5c824ecc7581910bf9aee86cb6835e6812aa7 \
+    --hash=sha256:e11e82b744887154b182fd3e7e8512418446501191994dbf9c9fc1f32cc8efd5 \
+    --hash=sha256:e6e73b9e02893c764e7e8d5bb5ce277f1a009cd5243f8228f75f842bf937c534 \
+    --hash=sha256:f73b96c41e3b2adedc34a7356e64c8eb96e03a3782b535e043a986276ce12a49 \
+    --hash=sha256:f93fd8e5c8c0a4aa1f424d6173f14a892044054871c771f8566e4008eaa359d2 \
+    --hash=sha256:fc33c5141b55ed366cfaad382df24fe7dcbc686de5be719b207bb248e3053dc5 \
+    --hash=sha256:fc7de24befaeae77ba923797c7c87834c73648a05a4bde34b3b7e5588973a453 \
+    --hash=sha256:fe562eb1a64e67dd297ccc4f5addea2501664954f2692b69a76449ec7913ecbf
    # via
    #   cryptography
    #   pynacl
@@ -185,44 +205,56 @@ click==8.1.7 \
    --hash=sha256:ae74fb96c20a0277a1d615f1e4d73c8414f5a98db8b799a7931d1582f3390c28 \
    --hash=sha256:ca9853ad459e787e2192211578cc907e7594e294c7ccc834310722b41b9ca6de
    # via black
-cryptography==45.0.5 \
-    --hash=sha256:0027d566d65a38497bc37e0dd7c2f8ceda73597d2ac9ba93810204f56f52ebc7 \
-    --hash=sha256:101ee65078f6dd3e5a028d4f19c07ffa4dd22cce6a20eaa160f8b5219911e7d8 \
-    --hash=sha256:12e55281d993a793b0e883066f590c1ae1e802e3acb67f8b442e721e475e6463 \
-    --hash=sha256:14d96584701a887763384f3c47f0ca7c1cce322aa1c31172680eb596b890ec30 \
-    --hash=sha256:1e1da5accc0c750056c556a93c3e9cb828970206c68867712ca5805e46dc806f \
-    --hash=sha256:206210d03c1193f4e1ff681d22885181d47efa1ab3018766a7b32a7b3d6e6afd \
-    --hash=sha256:2089cc8f70a6e454601525e5bf2779e665d7865af002a5dec8d14e561002e135 \
-    --hash=sha256:3a264aae5f7fbb089dbc01e0242d3b67dffe3e6292e1f5182122bdf58e65215d \
-    --hash=sha256:3af26738f2db354aafe492fb3869e955b12b2ef2e16908c8b9cb928128d42c57 \
-    --hash=sha256:3fcfbefc4a7f332dece7272a88e410f611e79458fab97b5efe14e54fe476f4fd \
-    --hash=sha256:460f8c39ba66af7db0545a8c6f2eabcbc5a5528fc1cf6c3fa9a1e44cec33385e \
-    --hash=sha256:57c816dfbd1659a367831baca4b775b2a5b43c003daf52e9d57e1d30bc2e1b0e \
-    --hash=sha256:5aa1e32983d4443e310f726ee4b071ab7569f58eedfdd65e9675484a4eb67bd1 \
-    --hash=sha256:6ff8728d8d890b3dda5765276d1bc6fb099252915a2cd3aff960c4c195745dd0 \
-    --hash=sha256:7259038202a47fdecee7e62e0fd0b0738b6daa335354396c6ddebdbe1206af2a \
-    --hash=sha256:72e76caa004ab63accdf26023fccd1d087f6d90ec6048ff33ad0445abf7f605a \
-    --hash=sha256:7760c1c2e1a7084153a0f68fab76e754083b126a47d0117c9ed15e69e2103492 \
-    --hash=sha256:8c4a6ff8a30e9e3d38ac0539e9a9e02540ab3f827a3394f8852432f6b0ea152e \
-    --hash=sha256:9024beb59aca9d31d36fcdc1604dd9bbeed0a55bface9f1908df19178e2f116e \
-    --hash=sha256:90cb0a7bb35959f37e23303b7eed0a32280510030daba3f7fdfbb65defde6a97 \
-    --hash=sha256:91098f02ca81579c85f66df8a588c78f331ca19089763d733e34ad359f474174 \
-    --hash=sha256:926c3ea71a6043921050eaa639137e13dbe7b4ab25800932a8498364fc1abec9 \
-    --hash=sha256:982518cd64c54fcada9d7e5cf28eabd3ee76bd03ab18e08a48cad7e8b6f31b18 \
-    --hash=sha256:9b4cf6318915dccfe218e69bbec417fdd7c7185aa7aab139a2c0beb7468c89f0 \
-    --hash=sha256:ad0caded895a00261a5b4aa9af828baede54638754b51955a0ac75576b831b27 \
-    --hash=sha256:b85980d1e345fe769cfc57c57db2b59cff5464ee0c045d52c0df087e926fbe63 \
-    --hash=sha256:b8fa8b0a35a9982a3c60ec79905ba5bb090fc0b9addcfd3dc2dd04267e45f25e \
-    --hash=sha256:b9e38e0a83cd51e07f5a48ff9691cae95a79bea28fe4ded168a8e5c6c77e819d \
-    --hash=sha256:bd4c45986472694e5121084c6ebbd112aa919a25e783b87eb95953c9573906d6 \
-    --hash=sha256:be97d3a19c16a9be00edf79dca949c8fa7eff621763666a145f9f9535a5d7f42 \
-    --hash=sha256:c648025b6840fe62e57107e0a25f604db740e728bd67da4f6f060f03017d5097 \
-    --hash=sha256:d05a38884db2ba215218745f0781775806bde4f32e07b135348355fe8e4991d9 \
-    --hash=sha256:dd420e577921c8c2d31289536c386aaa30140b473835e97f83bc71ea9d2baf2d \
-    --hash=sha256:e357286c1b76403dd384d938f93c46b2b058ed4dfcdce64a770f0537ed3feb6f \
-    --hash=sha256:e6c00130ed423201c5bc5544c23359141660b07999ad82e34e7bb8f882bb78e0 \
-    --hash=sha256:e74d30ec9c7cb2f404af331d5b4099a9b322a8a6b25c4632755c8757345baac5 \
-    --hash=sha256:f3562c2f23c612f2e4a6964a61d942f891d29ee320edb62ff48ffb99f3de9ae8
+cryptography==46.0.5 \
+    --hash=sha256:02f547fce831f5096c9a567fd41bc12ca8f11df260959ecc7c3202555cc47a72 \
+    --hash=sha256:039917b0dc418bb9f6edce8a906572d69e74bd330b0b3fea4f79dab7f8ddd235 \
+    --hash=sha256:1abfdb89b41c3be0365328a410baa9df3ff8a9110fb75e7b52e66803ddabc9a9 \
+    --hash=sha256:2ae6971afd6246710480e3f15824ed3029a60fc16991db250034efd0b9fb4356 \
+    --hash=sha256:2b7a67c9cd56372f3249b39699f2ad479f6991e62ea15800973b956f4b73e257 \
+    --hash=sha256:351695ada9ea9618b3500b490ad54c739860883df6c1f555e088eaf25b1bbaad \
+    --hash=sha256:38946c54b16c885c72c4f59846be9743d699eee2b69b6988e0a00a01f46a61a4 \
+    --hash=sha256:3b4995dc971c9fb83c25aa44cf45f02ba86f71ee600d81091c2f0cbae116b06c \
+    --hash=sha256:3ce58ba46e1bc2aac4f7d9290223cead56743fa6ab94a5d53292ffaac6a91614 \
+    --hash=sha256:3ee190460e2fbe447175cda91b88b84ae8322a104fc27766ad09428754a618ed \
+    --hash=sha256:4108d4c09fbbf2789d0c926eb4152ae1760d5a2d97612b92d508d96c861e4d31 \
+    --hash=sha256:420d0e909050490d04359e7fdb5ed7e667ca5c3c402b809ae2563d7e66a92229 \
+    --hash=sha256:47fb8a66058b80e509c47118ef8a75d14c455e81ac369050f20ba0d23e77fee0 \
+    --hash=sha256:4c3341037c136030cb46e4b1e17b7418ea4cbd9dd207e4a6f3b2b24e0d4ac731 \
+    --hash=sha256:4d7e3d356b8cd4ea5aff04f129d5f66ebdc7b6f8eae802b93739ed520c47c79b \
+    --hash=sha256:4d8ae8659ab18c65ced284993c2265910f6c9e650189d4e3f68445ef82a810e4 \
+    --hash=sha256:4e817a8920bfbcff8940ecfd60f23d01836408242b30f1a708d93198393a80b4 \
+    --hash=sha256:50bfb6925eff619c9c023b967d5b77a54e04256c4281b0e21336a130cd7fc263 \
+    --hash=sha256:556e106ee01aa13484ce9b0239bca667be5004efb0aabbed28d353df86445595 \
+    --hash=sha256:582f5fcd2afa31622f317f80426a027f30dc792e9c80ffee87b993200ea115f1 \
+    --hash=sha256:5be7bf2fb40769e05739dd0046e7b26f9d4670badc7b032d6ce4db64dddc0678 \
+    --hash=sha256:60ee7e19e95104d4c03871d7d7dfb3d22ef8a9b9c6778c94e1c8fcc8365afd48 \
+    --hash=sha256:61aa400dce22cb001a98014f647dc21cda08f7915ceb95df0c9eaf84b4b6af76 \
+    --hash=sha256:68f68d13f2e1cb95163fa3b4db4bf9a159a418f5f6e7242564fc75fcae667fd0 \
+    --hash=sha256:7d1f30a86d2757199cb2d56e48cce14deddf1f9c95f1ef1b64ee91ea43fe2e18 \
+    --hash=sha256:7d731d4b107030987fd61a7f8ab512b25b53cef8f233a97379ede116f30eb67d \
+    --hash=sha256:803812e111e75d1aa73690d2facc295eaefd4439be1023fefc4995eaea2af90d \
+    --hash=sha256:80a8d7bfdf38f87ca30a5391c0c9ce4ed2926918e017c29ddf643d0ed2778ea1 \
+    --hash=sha256:8293f3dea7fc929ef7240796ba231413afa7b68ce38fd21da2995549f5961981 \
+    --hash=sha256:8456928655f856c6e1533ff59d5be76578a7157224dbd9ce6872f25055ab9ab7 \
+    --hash=sha256:890bcb4abd5a2d3f852196437129eb3667d62630333aacc13dfd470fad3aaa82 \
+    --hash=sha256:94a76daa32eb78d61339aff7952ea819b1734b46f73646a07decb40e5b3448e2 \
+    --hash=sha256:9f16fbdf4da055efb21c22d81b89f155f02ba420558db21288b3d0035bafd5f4 \
+    --hash=sha256:a3d1fae9863299076f05cb8a778c467578262fae09f9dc0ee9b12eb4268ce663 \
+    --hash=sha256:a3d507bb6a513ca96ba84443226af944b0f7f47dcc9a399d110cd6146481d24c \
+    --hash=sha256:abace499247268e3757271b2f1e244b36b06f8515cf27c4d49468fc9eb16e93d \
+    --hash=sha256:ba2a27ff02f48193fc4daeadf8ad2590516fa3d0adeeb34336b96f7fa64c1e3a \
+    --hash=sha256:bc84e875994c3b445871ea7181d424588171efec3e185dced958dad9e001950a \
+    --hash=sha256:bfd56bb4b37ed4f330b82402f6f435845a5f5648edf1ad497da51a8452d5d62d \
+    --hash=sha256:c18ff11e86df2e28854939acde2d003f7984f721eba450b56a200ad90eeb0e6b \
+    --hash=sha256:c3bcce8521d785d510b2aad26ae2c966092b7daa8f45dd8f44734a104dc0bc1a \
+    --hash=sha256:c4143987a42a2397f2fc3b4d7e3a7d313fbe684f67ff443999e803dd75a76826 \
+    --hash=sha256:c69fd885df7d089548a42d5ec05be26050ebcd2283d89b3d30676eb32ff87dee \
+    --hash=sha256:ced80795227d70549a411a4ab66e8ce307899fad2220ce5ab2f296e687eacde9 \
+    --hash=sha256:d66e421495fdb797610a08f43b05269e0a5ea7f5e652a89bfd5a7d3c1dee3648 \
+    --hash=sha256:d861ee9e76ace6cf36a6a89b959ec08e7bc2493ee39d07ffe5acb23ef46d27da \
+    --hash=sha256:e9251e3be159d1020c4030bd2e5f84d6a43fe54b6c19c12f51cde9542a2817b2 \
+    --hash=sha256:f145bba11b878005c496e93e257c1e88f154d278d2638e6450d17e0f31e558d2 \
+    --hash=sha256:fe346b143ff9685e40192a4960938545c699054ba11d4f9029f94751e3f71d87
    # via
    #   -r requirements_formatting.txt.in
    #   pyjwt
@@ -278,18 +310,35 @@ pyjwt==2.8.0 \
    --hash=sha256:57e28d156e3d5c10088e0c68abb90bfac3df82b40a71bd0daa20c65ccd5c23de \
    --hash=sha256:59127c392cc44c2da5bb3192169a91f429924e17aff6534d70fdc02ab3e04320
    # via pygithub
-pynacl==1.5.0 \
-    --hash=sha256:06b8f6fa7f5de8d5d2f7573fe8c863c051225a27b61e6860fd047b1775807858 \
-    --hash=sha256:0c84947a22519e013607c9be43706dd42513f9e6ae5d39d3613ca1e142fba44d \
-    --hash=sha256:20f42270d27e1b6a29f54032090b972d97f0a1b0948cc52392041ef7831fee93 \
-    --hash=sha256:401002a4aaa07c9414132aaed7f6836ff98f59277a234704ff66878c2ee4a0d1 \
-    --hash=sha256:52cb72a79269189d4e0dc537556f4740f7f0a9ec41c1322598799b0bdad4ef92 \
-    --hash=sha256:61f642bf2378713e2c2e1de73444a3778e5f0a38be6fee0fe532fe30060282ff \
-    --hash=sha256:8ac7448f09ab85811607bdd21ec2464495ac8b7c66d146bf545b0f08fb9220ba \
-    --hash=sha256:a36d4a9dda1f19ce6e03c9a784a2921a4b726b02e1c736600ca9c22029474394 \
-    --hash=sha256:a422368fc821589c228f4c49438a368831cb5bbc0eab5ebe1d7fac9dded6567b \
-    --hash=sha256:e46dae94e34b085175f8abb3b0aaa7da40767865ac82c928eeb9e57e1ea8a543
-    # via pygithub
+pynacl==1.6.2 \
+    --hash=sha256:018494d6d696ae03c7e656e5e74cdfd8ea1326962cc401bcf018f1ed8436811c \
+    --hash=sha256:04316d1fc625d860b6c162fff704eb8426b1a8bcd3abacea11142cbd99a6b574 \
+    --hash=sha256:22de65bb9010a725b0dac248f353bb072969c94fa8d6b1f34b87d7953cf7bbe4 \
+    --hash=sha256:26bfcd00dcf2cf160f122186af731ae30ab120c18e8375684ec2670dccd28130 \
+    --hash=sha256:2fef529ef3ee487ad8113d287a593fa26f48ee3620d92ecc6f1d09ea38e0709b \
+    --hash=sha256:320ef68a41c87547c91a8b58903c9caa641ab01e8512ce291085b5fe2fcb7590 \
+    --hash=sha256:3bffb6d0f6becacb6526f8f42adfb5efb26337056ee0831fb9a7044d1a964444 \
+    --hash=sha256:44081faff368d6c5553ccf55322ef2819abb40e25afaec7e740f159f74813634 \
+    --hash=sha256:46065496ab748469cdd999246d17e301b2c24ae2fdf739132e580a0e94c94a87 \
+    --hash=sha256:5811c72b473b2f38f7e2a3dc4f8642e3a3e9b5e7317266e4ced1fba85cae41aa \
+    --hash=sha256:622d7b07cc5c02c666795792931b50c91f3ce3c2649762efb1ef0d5684c81594 \
+    --hash=sha256:62985f233210dee6548c223301b6c25440852e13d59a8b81490203c3227c5ba0 \
+    --hash=sha256:68be3a09455743ff9505491220b64440ced8973fe930f270c8e07ccfa25b1f9e \
+    --hash=sha256:834a43af110f743a754448463e8fd61259cd4ab5bbedcf70f9dabad1d28a394c \
+    --hash=sha256:8845c0631c0be43abdd865511c41eab235e0be69c81dc66a50911594198679b0 \
+    --hash=sha256:8a66d6fb6ae7661c58995f9c6435bda2b1e68b54b598a6a10247bfcdadac996c \
+    --hash=sha256:8b097553b380236d51ed11356c953bf8ce36a29a3e596e934ecabe76c985a577 \
+    --hash=sha256:a84bf1c20339d06dc0c85d9aea9637a24f718f375d861b2668b2f9f96fa51145 \
+    --hash=sha256:a9f9932d8d2811ce1a8ffa79dcbdf3970e7355b5c8eb0c1a881a57e7f7d96e88 \
+    --hash=sha256:bc4a36b28dd72fb4845e5d8f9760610588a96d5a51f01d84d8c6ff9849968c14 \
+    --hash=sha256:c8a231e36ec2cab018c4ad4358c386e36eede0319a0c41fed24f840b1dac59f6 \
+    --hash=sha256:c949ea47e4206af7c8f604b8278093b674f7c79ed0d4719cc836902bf4517465 \
+    --hash=sha256:d071c6a9a4c94d79eb665db4ce5cedc537faf74f2355e4d502591d850d3913c0 \
+    --hash=sha256:d29bfe37e20e015a7d8b23cfc8bd6aa7909c92a1b8f41ee416bbb3e79ef182b2 \
+    --hash=sha256:fe9847ca47d287af41e82be1dd5e23023d3c31a951da134121ab02e42ac218c9
+    # via
+    #   -r requirements_formatting.txt.in
+    #   pygithub
 requests==2.32.4 \
    --hash=sha256:27babd3cda2a6d50b30443204ee89830707d396671944c998b5975b031ac2b2c \
    --hash=sha256:27d0316682c8a29834d3264820024b62a36942083d52caf2f14c0591336d3422
@@ -306,9 +355,9 @@ typing-extensions==4.14.1 \
    --hash=sha256:38b39f4aeeab64884ce9f74c94263ef78f3c22467c8724005483154c26648d36 \
    --hash=sha256:d1e1e3b58374dc93031d6eda2420a48ea44a36c2b4766a4fdeb3710755731d76
    # via pygithub
-urllib3==2.5.0 \
-    --hash=sha256:3fc47733c7e419d4bc3f6b3dc2b4f890bb743906a30d56ba4a5bfa4bbff92760 \
-    --hash=sha256:e6b01673c0fa6a13e374b50871808eb3bf7046c4b125b216f6bf1cc604cff0dc
+urllib3==2.6.3 \
+    --hash=sha256:1b62b6884944a57dbe321509ab94fd4d3b307075e0c2eae991ac71ee15ad38ed \
+    --hash=sha256:bf272323e553dfb2e87d9bfd225ca7b0f467b919d7bbd355436d3fd37cb0acd4
    # via
    #   -r requirements_formatting.txt.in
    #   pygithub
@@ -1,8 +1,9 @@
 black~=25.1
 darker==2.1.1
 PyGithub==2.6.1
-cryptography>=43.0.1
-urllib3>=2.5.0
+cryptography>=46.0.5
+urllib3>=2.6.3
 requests>=2.32.4
 idna>=3.7
 certifi>=2024.7.4
+PyNaCl>=1.6.2
@@ -1,3 +1,6 @@
 set(NAME tiny-json)
 set(SRCS tiny-json.c)
 add_library(${NAME} STATIC ${SRCS})
+
+target_include_directories(${NAME} PUBLIC ${CMAKE_CURRENT_LIST_DIR})
+add_library(${NAME}::${NAME} ALIAS ${NAME})
@@ -1,16 +1,16 @@
 cmake_minimum_required(VERSION 3.14)
-set (PROJECT_NAME FEXCore)
+set(PROJECT_NAME FEXCore)
 project(${PROJECT_NAME}
  VERSION 0.01
  LANGUAGES CXX)

 if (CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64")
-  set(_M_X86_64 1)
+  set(ARCHITECTURE_x86_64 1)
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mcx16")
 endif()

 if (CMAKE_SYSTEM_PROCESSOR MATCHES "^aarch64|^arm64|^armv8\.*")
-  set(_M_ARM_64 1)
+  set(ARCHITECTURE_arm64 1)
 endif()

 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
@@ -24,45 +24,10 @@ include(CheckCXXCompilerFlag)
 include(CheckIncludeFileCXX)
 include(CheckCXXSourceCompiles)

-if (EXISTS ${CMAKE_CURRENT_DIR}/External/vixl/)
-    # Useful to have for freestanding libFEXCore
-    add_subdirectory(External/vixl/)
-    include_directories(External/vixl/src/)
-endif()
-
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

-set(GIT_SHORT_HASH "Unknown")
-set(GIT_DESCRIBE_STRING "FEX-Unknown")
-
-if (OVERRIDE_VERSION STREQUAL "detect")
-# Find our git hash
-  find_package(Git)
-
-  if (GIT_FOUND)
-    execute_process(
-      COMMAND ${GIT_EXECUTABLE} rev-parse --short=7 HEAD
-      WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
-      OUTPUT_VARIABLE GIT_SHORT_HASH
-      ERROR_QUIET
-      OUTPUT_STRIP_TRAILING_WHITESPACE
-    )
-    execute_process(
-      COMMAND ${GIT_EXECUTABLE} describe --abbrev=7
-      WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
-      OUTPUT_VARIABLE GIT_DESCRIBE_STRING
-      ERROR_QUIET
-      OUTPUT_STRIP_TRAILING_WHITESPACE
-    )
-  endif()
-else()
-  set(GIT_SHORT_HASH "${OVERRIDE_VERSION}")
-  set(GIT_DESCRIBE_STRING "FEX-${OVERRIDE_VERSION}")
-endif()
-
-configure_file(
-  ${CMAKE_CURRENT_SOURCE_DIR}/include/git_version.h.in
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/include/git_version.h.in
  ${CMAKE_BINARY_DIR}/generated/git_version.h)

 include_directories(${CMAKE_BINARY_DIR}/generated)
@@ -156,7 +156,7 @@ def print_man_environment_tail():
    "APP_CONFIG_LOCATION",
    [
    "Allows the user to override where FEX looks for configuration files",
-    "By default FEX will look in {$HOME, $XDG_CONFIG_HOME}/.fex-emu/",
+    "By default FEX will look in ${XDG_CONFIG_HOME, $HOME/.config}/fex-emu/",
    "This will override the full path",
    "If FEX_PORTABLE is declared then relative paths are also supported",
    "For FEX: Relative to the FEX binary",
@@ -168,7 +168,7 @@ def print_man_environment_tail():
    "APP_CONFIG",
    [
    "Allows the user to override where FEX looks for only the application config file",
-    "By default FEX will look in {$HOME, $XDG_CONFIG_HOME}/.fex-emu/Config.json",
+    "By default FEX will look in ${XDG_CONFIG_HOME, $HOME/.config}/fex-emu/Config.json",
    "This will override this file location",
    "One must be careful with this option as it will override any applications that load with execve as well"
    "If you need to support applications that execve then use FEX_APP_CONFIG_LOCATION instead"
@@ -182,7 +182,7 @@ def print_man_environment_tail():
    "APP_DATA_LOCATION",
    [
    "Allows the user to override where FEX looks for data files",
-    "By default FEX will look in {$HOME, $XDG_DATA_HOME}/.fex-emu/",
+    "By default FEX will look in {$XDG_DATA_HOME, $HOME/.local/share}/fex-emu/",
    "This will override the full path",
    "This is the folder where FEX stores generated files like IR cache"
    ],
@@ -204,7 +204,7 @@ def print_man_environment_tail():
    "APP_CACHE_LOCATION",
    [
    "Allows the user to override where FEX stores and loads cache files",
-    "By default FEX will look in $XDG_CACHE_HOME/fex-emu/ or $HOME/.cache/fex-emu/",
+    "By default FEX will look in ${XDG_CACHE_HOME, $HOME/.cache}/fex-emu/",
    "This will override the full path, trailing forward-slash is expected to exist",
    ],
    "''", True)
@@ -234,7 +234,7 @@ FEX is very much work in progress, so expect things to change.
 def print_man_tail():
    tail ='''.Sh FILES
 .Bl -tag -width "$prefix/share/fex-emu/GuestThunks" -compact
-.It Pa $XDG_HOME_DIR/.fex-emu
+.It Pa $XDG_CONFIG_DIR/fex-emu
 Default FEX user configuration directory
 .It Pa $prefix/share/fex-emu/AppConfig
 System level application configuration files
@@ -678,6 +678,7 @@ def print_ir_allocator_helpers():
    # Generate helpers with operands
    for op in IROps:
        if op.Name != "Last":
+            output_file.write("\t///\n".join(["\t/// {}\n" .format(comment) for comment in op.Desc]))
            output_file.write("\tIRPair<IROp_{}> _{}(" .format(op.Name, op.Name))

            # Output SSA args first
@@ -751,6 +752,7 @@ def print_ir_allocator_helpers():

            # Now do the OrderedNode * version if necessary
            if op.SSAArgNum:
+                output_file.write("\t///\n".join(["\t/// {}\n" .format(comment) for comment in op.Desc]))
                output_file.write("\tIRPair<IROp_{}> _{}(" .format(op.Name, op.Name))

                for i, arg in enumerate(op.Arguments):
@@ -1,20 +1,19 @@
-set (MAN_DIR share/man CACHE PATH "MAN_DIR")
+set(MAN_DIR share/man CACHE PATH "MAN_DIR")

-set (FEXCORE_BASE_SRCS
+set(FEXCORE_BASE_SRCS
  Interface/Config/Config.cpp
  Utils/Allocator.cpp
  Utils/FileLoading.cpp
  Utils/ForcedAssert.cpp
  Utils/LogManager.cpp
-  Utils/SpinWaitLock.cpp
-  )
+  Utils/SpinWaitLock.cpp)

-if (NOT MINGW_BUILD)
+if (NOT MINGW)
  list(APPEND FEXCORE_BASE_SRCS
    Utils/Allocator/64BitAllocator.cpp)
 endif()

-set (SRCS
+set(SRCS
  Common/JitSymbols.cpp
  Interface/Context/Context.cpp
  Interface/Core/LookupCache.cpp
@@ -68,10 +67,9 @@ set (SRCS
  Utils/LongJump.cpp
  Utils/Telemetry.cpp
  Utils/Threads.cpp
-  Utils/Profiler.cpp
-  )
+  Utils/Profiler.cpp)

-if (_M_ARM_64)
+if (ARCHITECTURE_arm64)
  list(APPEND SRCS Utils/ArchHelpers/Arm64.cpp)
 else()
  list(APPEND SRCS Utils/ArchHelpers/Arm64_stubs.cpp)
@@ -84,42 +82,49 @@ endif()

 set(DEFINES -DJIT_ARM64)

-if (_M_X86_64)
-  list(APPEND DEFINES -D_M_X86_64=1)
+if (ARCHITECTURE_x86_64)
+  list(APPEND DEFINES -DARCHITECTURE_x86_64=1)
 endif()

-if (_M_ARM_64)
-  list(APPEND DEFINES -D_M_ARM_64=1)
+if (ARCHITECTURE_arm64)
+  list(APPEND DEFINES -DARCHITECTURE_arm64=1)
 endif()

 if (ENABLE_VIXL_DISASSEMBLER)
  list(APPEND DEFINES -DVIXL_DISASSEMBLER=1)
 endif()

-if (_M_ARM_64 AND HAS_CLANG_PRESERVE_ALL)
+if (ENABLE_ZYDIS)
+  list(APPEND DEFINES -DZYDIS_DISASSEMBLER=1)
+endif()
+
+if (ARCHITECTURE_arm64 AND HAS_CLANG_PRESERVE_ALL)
  list(APPEND DEFINES "-DFEXCORE_PRESERVE_ALL_ATTR=__attribute__((preserve_all));-DFEXCORE_HAS_PRESERVE_ALL_ATTR=1")
 else()
  list(APPEND DEFINES "-DFEXCORE_PRESERVE_ALL_ATTR=;-DFEXCORE_HAS_PRESERVE_ALL_ATTR=0")
 endif()

-set (LIBS fmt::fmt xxHash::xxhash FEXHeaderUtils CodeEmitter cephes_128bit)
+set(LIBS fmt::fmt xxHash::xxhash FEXHeaderUtils CodeEmitter cephes_128bit)

 if (ENABLE_VIXL_DISASSEMBLER OR ENABLE_VIXL_SIMULATOR)
-  list (APPEND LIBS vixl)
+  list(APPEND LIBS vixl::vixl)
 endif()

-if (NOT MINGW_BUILD)
-  list (APPEND LIBS dl)
+if (ENABLE_ZYDIS)
+  list(APPEND LIBS Zydis::Zydis)
+endif()
+
+if (NOT MINGW)
+  list(APPEND LIBS dl)
 else()
-  list (APPEND LIBS synchronization)
-  if (_M_ARM_64EC)
-    list (APPEND LIBS mincore)
+  list(APPEND LIBS synchronization)
+  if (ARCHITECTURE_arm64ec)
+    list(APPEND LIBS mincore)
  endif()
 endif()

 # Generate config
-configure_file(
-  ${CMAKE_CURRENT_SOURCE_DIR}/Interface/Config/Config.json.in
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/Interface/Config/Config.json.in
  ${CMAKE_BINARY_DIR}/generated/Config/Config.json)

 # Generate IR include file
@@ -134,11 +139,10 @@ add_custom_command(
  OUTPUT "${OUTPUT_NAME}" "${OUTPUT_DISPATCHER_NAME}"
  DEPENDS "${INPUT_NAME}"
  DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/../Scripts/json_ir_generator.py"
-  COMMAND "python3" "${CMAKE_CURRENT_SOURCE_DIR}/../Scripts/json_ir_generator.py" "${INPUT_NAME}" "${OUTPUT_NAME}" "${OUTPUT_DISPATCHER_NAME}"
-  )
+  COMMAND "python3" "${CMAKE_CURRENT_SOURCE_DIR}/../Scripts/json_ir_generator.py"
+    "${INPUT_NAME}" "${OUTPUT_NAME}" "${OUTPUT_DISPATCHER_NAME}")

-set_source_files_properties(${OUTPUT_NAME} PROPERTIES
-  GENERATED TRUE)
+set_source_files_properties(${OUTPUT_NAME} PROPERTIES GENERATED TRUE)

 # Generate IR documentation
 set(OUTPUT_IR_DOC "${CMAKE_BINARY_DIR}/IR.md")
@@ -147,11 +151,10 @@ add_custom_command(
  OUTPUT "${OUTPUT_IR_DOC}"
  DEPENDS "${INPUT_NAME}"
  DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/../Scripts/json_ir_doc_generator.py"
-  COMMAND "python3" "${CMAKE_CURRENT_SOURCE_DIR}/../Scripts/json_ir_doc_generator.py" "${INPUT_NAME}" "${OUTPUT_IR_DOC}"
-  )
+  COMMAND "python3" "${CMAKE_CURRENT_SOURCE_DIR}/../Scripts/json_ir_doc_generator.py"
+    "${INPUT_NAME}" "${OUTPUT_IR_DOC}")

-set_source_files_properties(${OUTPUT_IR_NAME} PROPERTIES
-  GENERATED TRUE)
+set_source_files_properties(${OUTPUT_IR_NAME} PROPERTIES GENERATED TRUE)

 # Create the target
 add_custom_target(IR_INC
@@ -175,14 +178,12 @@ add_custom_command(
  DEPENDS "${INPUT_CONFIG_NAME}"
  DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/../Scripts/config_generator.py"
  COMMAND "python3" "${CMAKE_CURRENT_SOURCE_DIR}/../Scripts/config_generator.py" "${INPUT_CONFIG_NAME}" "${OUTPUT_CONFIG_NAME}" "${OUTPUT_MAN_NAME}"
-  "${OUTPUT_CONFIG_OPTION_NAME}"
-  )
+  "${OUTPUT_CONFIG_OPTION_NAME}")

 add_custom_command(
  OUTPUT "${OUTPUT_MAN_NAME_COMPRESS}"
  DEPENDS "${OUTPUT_MAN_NAME}"
-  COMMAND "gzip" "-kf9n" "${OUTPUT_MAN_NAME}"
-  )
+  COMMAND "gzip" "-kf9n" "${OUTPUT_MAN_NAME}")

 set_source_files_properties(${OUTPUT_CONFIG_NAME} PROPERTIES
  GENERATED TRUE)
@@ -226,8 +227,7 @@ function(AddDefaultOptionsToTarget Name)
  target_compile_definitions(${Name} PRIVATE ${DEFINES})
  add_dependencies(${Name} CONFIG_INC IR_INC)

-  target_compile_options(${Name}
-    PRIVATE
+  target_compile_options(${Name} PRIVATE
    -Wall
    -Werror=cast-qual
    -Werror=ignored-qualifiers
@@ -235,82 +235,72 @@ function(AddDefaultOptionsToTarget Name)

    -Wno-trigraphs
    -ffunction-sections
-    -fwrapv
-  )
+    -fwrapv)

  if (GCC_COLOR)
-    target_compile_options(${Name}
-      PRIVATE
-      "-fdiagnostics-color=always")
-  endif()
-  if (CLANG_COLOR)
-    target_compile_options(${Name}
-      PRIVATE
-      "-fcolor-diagnostics")
+    target_compile_options(${Name} PRIVATE "-fdiagnostics-color=always")
  endif()

-  if (CMAKE_BUILD_TYPE MATCHES "RELEASE")
-    target_link_options(${Name}
-      PRIVATE
-      "LINKER:--gc-sections"
-      "LINKER:--strip-all"
-      "LINKER:--as-needed"
-    )
+  if (CLANG_COLOR)
+    target_compile_options(${Name} PRIVATE "-fcolor-diagnostics")
  endif()
+
+  LinkerGC(${Name})
+  target_link_libraries(${Name} PUBLIC unordered_dense::unordered_dense)
 endfunction()

-# Build FEXCore_Config static library
+# Build FEXCore_Base static library
 add_library(FEXCore_Base STATIC ${FEXCORE_BASE_SRCS})
-target_link_libraries(FEXCore_Base ${LIBS})
+target_link_libraries(FEXCore_Base PUBLIC ${LIBS})
 AddDefaultOptionsToTarget(FEXCore_Base)

 if (ENABLE_FEXCORE_PROFILER AND FEXCORE_PROFILER_BACKEND STREQUAL "TRACY")
-  target_link_libraries(FEXCore_Base TracyClient)
+  target_link_libraries(FEXCore_Base PUBLIC TracyClient)
 endif()

-function(AddObject Name Type)
-  add_library(${Name} ${Type} ${SRCS})
+function(AddObject Name)
+  add_library(${Name} OBJECT ${SRCS})

-  target_link_libraries(${Name} FEXCore_Base)
+  target_link_libraries(${Name} PRIVATE FEXCore_Base)
  target_compile_options(${Name} PRIVATE ${FEX_TUNE_COMPILE_FLAGS})
  AddDefaultOptionsToTarget(${Name})
-
-  set_target_properties(${Name} PROPERTIES OUTPUT_NAME FEXCore)
 endfunction()

 function(AddLibrary Name Type)
  add_library(${Name} ${Type} $<TARGET_OBJECTS:${PROJECT_NAME}_object>)
-  target_link_libraries(${Name} FEXCore_Base)
-  target_compile_options(${Name} PRIVATE ${FEX_TUNE_COMPILE_FLAGS})
  set_target_properties(${Name} PROPERTIES OUTPUT_NAME FEXCore)

+  # During generation of the import library (dll.a), MinGW needs some extra symbols from libraries
+  # such as fmt, which are propagated by FEXCore_Base. Wonderful.
+  if (MINGW)
+    target_link_libraries(${Name} PRIVATE FEXCore_Base)
+  endif()
  AddDefaultOptionsToTarget(${Name})
 endfunction()

-AddObject(${PROJECT_NAME}_object OBJECT)
+AddObject(${PROJECT_NAME}_object)
 AddLibrary(${PROJECT_NAME} STATIC)
 AddLibrary(${PROJECT_NAME}_shared SHARED)

-if (NOT MINGW_BUILD AND NOT BUILD_STEAM_SUPPORT)
-  install(TARGETS ${PROJECT_NAME}_shared
-    LIBRARY
-      DESTINATION ${CMAKE_INSTALL_LIBDIR}
-      COMPONENT Libraries)
+if (NOT MINGW AND NOT BUILD_STEAM_SUPPORT)
+  install(TARGETS ${PROJECT_NAME}_shared LIBRARY
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    COMPONENT Libraries)
 endif()

 # Meta-library to link jemalloc libraries enabled in the build configuration.
 # Only needed for targets that run emulation. For others, use JemallocDummy.
 add_library(JemallocLibs STATIC Utils/AllocatorHooks.cpp)
-if (ENABLE_JEMALLOC)
-  target_compile_definitions(JemallocLibs PRIVATE ENABLE_JEMALLOC=1 JEMALLOC_NO_RENAME=1)
-  target_link_libraries(JemallocLibs PUBLIC FEX_jemalloc)
+if (ENABLE_FEX_ALLOCATOR)
+  target_compile_definitions(JemallocLibs PRIVATE ENABLE_FEX_ALLOCATOR=1)
+  target_link_libraries(JemallocLibs PUBLIC rpmalloc)
 endif()
 if (ENABLE_JEMALLOC_GLIBC_ALLOC)
  set_source_files_properties(Interface/HLE/Thunks/Thunks.cpp PROPERTIES COMPILE_DEFINITIONS ENABLE_JEMALLOC_GLIBC=1)
  target_link_libraries(JemallocLibs INTERFACE FEX_jemalloc_glibc)
 endif()

-if (NOT MINGW_BUILD)
+if (NOT MINGW)
  # Dummy project to use for host tools.
  # This overrides use of jemalloc in FEXCore with the normal glibc allocator.
  add_library(JemallocDummy STATIC Utils/AllocatorHooks.cpp)
@@ -318,4 +308,4 @@ if (NOT MINGW_BUILD)
 endif()

 # The shared library should always link enabled jemalloc libraries
-target_link_libraries(${PROJECT_NAME}_shared JemallocLibs)
+target_link_libraries(${PROJECT_NAME}_shared PRIVATE JemallocLibs)
@@ -19,7 +19,7 @@ extern "C" {
 }

 struct FEX_PACKED X80SoftFloat {
-#ifdef _M_X86_64
+#ifdef ARCHITECTURE_x86_64
 // Define this to push some operations to x87
 // Only useful to see if precision loss is killing something
 // #define DEBUG_X86_FLOAT
@@ -30,29 +30,33 @@ struct FEX_PACKED X80SoftFloat {
 #define BIGFLOAT float128_t
 #define BIGFLOATSIZE 16
 #endif
-#elif defined(_M_ARM_64)
+#elif defined(ARCHITECTURE_arm64)
 #define BIGFLOAT float128_t
 #define BIGFLOATSIZE 16
 #else
 #error No 128bit float for this target!
 #endif

-  uint64_t Significand : 64;
-  uint16_t Exponent    : 15;
-  uint16_t Sign        : 1;
+  uint64_t Significand;
+  union {
+    uint16_t Raw;
+    struct {
+      uint16_t Exponent : 15;
+      uint16_t Sign     : 1;
+    };
+  } Top;

  X80SoftFloat() {
    memset(this, 0, sizeof(*this));
  }
  X80SoftFloat(uint16_t _Sign, uint16_t _Exponent, uint64_t _Significand)
    : Significand {_Significand}
-    , Exponent {_Exponent}
-    , Sign {_Sign} {}
+    , Top {.Raw = static_cast<uint16_t>((_Exponent & 0x7FFF) | (_Sign << 15))} {}

  fextl::string str() const {
    fextl::ostringstream string;
-    string << std::hex << Sign;
-    string << "_" << Exponent;
+    string << std::hex << Top.Sign;
+    string << "_" << Top.Exponent;
    string << "_" << (Significand >> 63);
    string << "_" << (Significand & ((1ULL << 63) - 1));
    return string.str();
@@ -163,18 +167,18 @@ struct FEX_PACKED X80SoftFloat {
    X80SoftFloat result = 0;
    if (HandleInfinityOp(state, lhs, result)) {
      return result;
-    } else if (lhs.Exponent == 0x7FFF && (lhs.Significand & 0x7FFFFFFFFFFFFFFFULL)) { // NaN
+    } else if (lhs.Top.Exponent == 0x7FFF && (lhs.Significand & 0x7FFFFFFFFFFFFFFFULL)) { // NaN
      // propagate NaN
      state->exceptionFlags |= softfloat_flag_invalid;
      return lhs;
    }

    // Check for zero divisor - fprem(x, 0) is invalid operation
-    if (rhs.Exponent == 0 && rhs.Significand == 0) {
+    if (rhs.Top.Exponent == 0 && rhs.Significand == 0) {
      state->exceptionFlags |= softfloat_flag_invalid;
      // Return QNaN
-      result.Sign = 0;
-      result.Exponent = 0x7FFF;
+      result.Top.Sign = 0;
+      result.Top.Exponent = 0x7FFF;
      result.Significand = 0xC000000000000000ULL;
      return result;
    }
@@ -253,12 +257,12 @@ struct FEX_PACKED X80SoftFloat {
    return Result;
 #else
    // Zero is a special case, the significand for +/- 0 is +/- zero.
-    if (lhs.Exponent == 0x0 && lhs.Significand == 0x0) {
+    if (lhs.Top.Exponent == 0x0 && lhs.Significand == 0x0) {
      return lhs;
    }
    X80SoftFloat Tmp = lhs;
-    Tmp.Exponent = 0x3FFF;
-    Tmp.Sign = lhs.Sign;
+    Tmp.Top.Exponent = 0x3FFF;
+    Tmp.Top.Sign = lhs.Top.Sign;
    return Tmp;
 #endif
  }
@@ -280,12 +284,12 @@ struct FEX_PACKED X80SoftFloat {
    return Result;
 #else
    // Zero is a special case, the exponent is always -inf
-    if (lhs.Exponent == 0x0 && lhs.Significand == 0x0) {
+    if (lhs.Top.Exponent == 0x0 && lhs.Significand == 0x0) {
      X80SoftFloat Result(1, 0x7FFFUL, 0x8000'0000'0000'0000UL);
      return Result;
    }

-    int32_t TrueExp = lhs.Exponent - ExponentBias;
+    int32_t TrueExp = lhs.Top.Exponent - ExponentBias;
    return i32_to_extF80(TrueExp);
 #endif
  }
@@ -572,8 +576,7 @@ struct FEX_PACKED X80SoftFloat {

  X80SoftFloat(extFloat80_t rhs) {
    Significand = rhs.signif;
-    Exponent = rhs.signExp & 0x7FFF;
-    Sign = rhs.signExp >> 15;
+    Top.Raw = rhs.signExp;
  }

  X80SoftFloat(softfloat_state* state, const float rhs) {
@@ -606,8 +609,7 @@ struct FEX_PACKED X80SoftFloat {

  void operator=(extFloat80_t rhs) {
    Significand = rhs.signif;
-    Exponent = rhs.signExp & 0x7FFF;
-    Sign = rhs.signExp >> 15;
+    Top.Raw = rhs.signExp;
  }

  operator FEXCore::VectorRegType() const {
@@ -617,16 +619,16 @@ struct FEX_PACKED X80SoftFloat {
  operator extFloat80_t() const {
    extFloat80_t Result {};
    Result.signif = Significand;
-    Result.signExp = Exponent | (Sign << 15);
+    Result.signExp = Top.Raw;
    return Result;
  }

  static bool IsNan(const X80SoftFloat& lhs) {
-    return (lhs.Exponent == 0x7FFF) && (lhs.Significand & IntegerBit) && (lhs.Significand & Bottom62Significand);
+    return (lhs.Top.Exponent == 0x7FFF) && (lhs.Significand & IntegerBit) && (lhs.Significand & Bottom62Significand);
  }

  static bool SignBit(const X80SoftFloat& lhs) {
-    return lhs.Sign;
+    return lhs.Top.Sign;
  }

 private:
@@ -637,11 +639,11 @@ private:
  // Helper function to check for infinity and set invalid operation flag.
  // Returns true if infinity is dealt with, false otherwise.
  FEXCORE_PRESERVE_ALL_ATTR static bool HandleInfinityOp(softfloat_state* state, const X80SoftFloat& arg, X80SoftFloat& result) {
-    if (arg.Exponent == 0x7FFF && arg.Significand == 0x8000000000000000ULL) {
+    if (arg.Top.Exponent == 0x7FFF && arg.Significand == 0x8000000000000000ULL) {
      state->exceptionFlags |= softfloat_flag_invalid;
      // Return QNaN.
-      result.Sign = 0;
-      result.Exponent = 0x7FFF;
+      result.Top.Sign = 0;
+      result.Top.Exponent = 0x7FFF;
      result.Significand = 0xC000000000000000ULL;
      return true;
    }
@@ -649,9 +651,4 @@ private:
  }
 };

-#ifndef _WIN32
 static_assert(sizeof(X80SoftFloat) == 10, "tword must be 10bytes in size");
-#else
-// Padding on this extends to 16-bytes rather than 10-bytes on WIN32.
-static_assert(sizeof(X80SoftFloat) == 16, "tword must be 16bytes in size");
-#endif
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: MIT
 #pragma once

-#ifdef _M_X86_64
+#ifdef ARCHITECTURE_x86_64
 #include <xmmintrin.h>
 #include <immintrin.h>
 #else
@@ -13,7 +13,7 @@ struct VectorScalarF64Pair {
  double val[2];
 };

-#ifdef _M_ARM_64
+#ifdef ARCHITECTURE_arm64
 // Can't use uint8x16_t directly from arm_neon.h here.
 // Overrides softfloat-3e's defines which causes problems.
 using VectorRegType = __attribute__((neon_vector_type(16))) uint8_t;
@@ -25,7 +25,7 @@ static inline VectorRegPairType MakeVectorRegPair(VectorRegType low, VectorRegTy
  return VectorRegPairType {low, high};
 }

-#elif defined(_M_X86_64)
+#elif defined(ARCHITECTURE_x86_64)
 using VectorRegType = __m128i;
 using VectorRegPairType = __m256i;

@@ -307,12 +307,10 @@ constexpr char ContainerManager[] = "/run/host/container-manager";
 fextl::string FindContainer() {
  // We only support pressure-vessel at the moment
  if (FHU::Filesystem::Exists(ContainerManager)) {
-    fextl::vector<char> Manager {};
+    fextl::string Manager {};
    if (FEXCore::FileLoading::LoadFile(Manager, ContainerManager)) {
      // Trim the whitespace, may contain a newline
-      fextl::string ManagerStr = Manager.data();
-      ManagerStr = FEXCore::StringUtils::Trim(ManagerStr);
-      return ManagerStr;
+      return FEXCore::StringUtils::Trim(Manager);
    }
  }
  return {};
@@ -321,12 +319,10 @@ fextl::string FindContainer() {
 fextl::string FindContainerPrefix() {
  // We only support pressure-vessel at the moment
  if (FHU::Filesystem::Exists(ContainerManager)) {
-    fextl::vector<char> Manager {};
+    fextl::string Manager {};
    if (FEXCore::FileLoading::LoadFile(Manager, ContainerManager)) {
      // Trim the whitespace, may contain a newline
-      fextl::string ManagerStr = Manager.data();
-      ManagerStr = FEXCore::StringUtils::Trim(ManagerStr);
-      if (strncmp(ManagerStr.data(), "pressure-vessel", Manager.size()) == 0) {
+      if (FEXCore::StringUtils::Trim(Manager) == "pressure-vessel") {
        // We are running inside of pressure vessel
        // Our $CMAKE_INSTALL_PREFIX paths are now inside of /run/host/$CMAKE_INSTALL_PREFIX
        return "/run/host/";
@@ -23,6 +23,13 @@
          "Enable the code caching subsystem"
        ]
      },
+      "EnableCodeCacheValidation": {
+        "Type": "bool",
+        "Default": "false",
+        "Desc": [
+          "Enable expensive validation when loading code caches"
+        ]
+      },
      "HostFeatures": {
        "Type": "strenum",
        "Default": "FEXCore::Config::HostFeatures::OFF",
@@ -102,6 +109,13 @@
          "Scales the cycle counter on systems that have low frequencies."
        ]
      },
+      "HideHybrid": {
+        "Type": "bool",
+        "Default": "true",
+        "Desc": [
+          "Hides hybrid CPU core arrangement."
+        ]
+      },
      "CPUFeatureRegisters": {
        "Type": "str",
        "Default": "",
@@ -120,9 +134,9 @@
          "\teg: ~/RootFS/Debian_x86_64",
          "Or this can be a name of a rootfs",
          "If the named rootfs exists in the FEX data folder then it will use that one",
-          "\teg: $HOME/.fex-emu/RootFS/<RootFS name>/",
-          "Or if you have XDG_DATA_HOME the config will search in that directory",
-          "\teg: $XDG_DATA_HOME/.fex-emu/RootFS/<RootFS name>/"
+          "\teg: $XDG_DATA_HOME/fex-emu/RootFS/<RootFS name>/",
+          "If XDG_DATA_HOME is unset, ~/.local/share will be used in its place.",
+          "\teg: $HOME/.local/share/fex-emu/RootFS/<RootFS name>/"
        ]
      },
      "ThunkHostLibs": {
@@ -148,9 +162,9 @@
          "\teg: ~/MyThunkConfig.json",
          "Or this can be a named of a Thunk config file",
          "If the named config file exists in the FEX data folder folder the it will use that one",
-          "\teg: $HOME/.fex-emu/ThunkConfigs/<ThunkConfig name>",
-          "Or if you have XDG_DATA_HOME the config will search in that directory",
-          "\teg: $XDG_DATA_HOME/.fex-emu/ThunkConfigs/<ThunkConfig name>"
+          "\teg: $XDG_DATA_HOME/fex-emu/ThunkConfigs/<ThunkConfig name>",
+          "If XDG_DATA_HOME is unset, ~/.local/share will be used in its place.",
+          "\teg: $HOME/.local/share/fex-emu/ThunkConfigs/<ThunkConfig name>"
        ]
      },
      "Env": {
@@ -327,13 +341,21 @@
          "STATS": "stats"
        },
        "Desc": [
-          "Allows controlling of the vixl disassembler.",
+          "Allows controlling of the vixl disassembler for generated ARM code.",
          "\toff: No disassembly will be output",
          "\tdispatcher: Will enable disassembly of the JIT dispatcher loop",
          "\tblocks: Will enable disassembly of the translated instruction code blocks",
          "\tstats: Will print stats when disassembling the code"
        ]
      },
+      "X86Disassemble": {
+        "Type": "bool",
+        "Default": "false",
+        "Desc": [
+          "Enables x86/x86-64 guest disassembly output for compiled blocks.",
+          "Requires FEX to be built with -DENABLE_ZYDIS=TRUE"
+        ]
+      },
      "ForceSVEWidth": {
        "Type": "uint32",
        "Default": "0",
@@ -364,7 +386,7 @@
        "Default": "server",
        "Desc": [
          "File to write FEX output to.",
-          "[stdout, stderr, server, <Filename>]"
+          "[stderr, server, <Filename>]"
        ]
      },
      "TelemetryDirectory": {
@@ -372,7 +394,7 @@
        "Default": "",
        "Desc": [
          "Redirects the telemetry folder that FEX usually writes to.",
-          "By default telemetry data is stored in {$FEX_APP_DATA_LOCATION,{$XDG_DATA_HOME,$HOME}/.fex-emu/Telemetry/}"
+          "By default telemetry data is stored in {$FEX_APP_DATA_LOCATION,{$XDG_DATA_HOME,$HOME}/fex-emu/Telemetry/}"
        ]
      },
      "ProfileStats": {
@@ -70,12 +70,30 @@ public:
  ~CodeCache();

  ContextImpl& CTX;
+  fextl::unique_ptr<ContextImpl> ValidationCTX;
+  fextl::unique_ptr<Core::InternalThreadState> ValidationThread;
+  FEXCore::Core::CPUState::gdt_segment ValidationGDT[32] {};
  bool IsGeneratingCache = false;

-  uint64_t ComputeCodeMapId(std::string_view Filename, int FD) override;
+  FEX_CONFIG_OPT(EnableCodeCaching, ENABLECODECACHINGWIP);
+  FEX_CONFIG_OPT(EnableCodeCacheValidation, ENABLECODECACHEVALIDATION);

-  void LoadData(Core::InternalThreadState&, std::byte* MappedCacheFile, const ExecutableFileSectionInfo&) override;
+  uint64_t ComputeCodeMapId(std::string_view Filename, int FD) override;
  bool SaveData(Core::InternalThreadState&, int TargetFD, const ExecutableFileSectionInfo&, uint64_t SerializedBaseAddress) override;
+  bool LoadData(Core::InternalThreadState*, std::byte* MappedCacheFile, const ExecutableFileSectionInfo&) override;
+
+  /**
+   * Performs expensive extra validation on the loaded code cache data.
+   *
+   * This kicks off an in-process recompile of all cached blocks and compares
+   * them with the cached data. Differences will be reported as fatal errors,
+   * which can uncover bugs like for example:
+   * - mismatches of the JIT configuration used during cache generation
+   * - hidden position dependencies due to missing FEX relocations
+   * - incorrect instruction padding
+   */
+  void Validate(const ExecutableFileSectionInfo&, fextl::set<uint64_t> GuestBlocks, const fextl::set<uint64_t>& HostBlocks,
+                std::span<std::byte> CachedCode);

  void InitiateCacheGeneration() override {
    IsGeneratingCache = true;
@@ -41,7 +41,7 @@ namespace FEXCore::CPU {
 //    r19-r29 and SP.

 namespace x64 {
-#ifndef _M_ARM_64EC
+#ifndef ARCHITECTURE_arm64ec
  // All but x19 and x29 are caller saved
  // Note that rax/rdx are rearranged here so we can coalesce cmpxchg.
  constexpr std::array<ARMEmitter::Register, 18> SRA = {
@@ -417,18 +417,34 @@ FEXCore::X86State::X86Reg Arm64Emitter::GetX86RegRelationToARMReg(ARMEmitter::Re
  return FEXCore::X86State::X86Reg::REG_INVALID;
 }

-void Arm64Emitter::LoadConstant(ARMEmitter::Size s, ARMEmitter::Register Reg, uint64_t Constant, bool NOPPad) {
+void Arm64Emitter::LoadConstant(ARMEmitter::Size s, ARMEmitter::Register Reg, uint64_t Constant, PadType Pad, int MaxBytes) {
+  bool NOPPad = false;
+  if (Pad == PadType::DOPAD) {
+    NOPPad = true;
+  } else if (Pad == PadType::NOPAD) {
+    NOPPad = false;
+  } else if (Pad == PadType::AUTOPAD) {
+    // Force NOP padding to ensure relocated constants always have enough encoding space available
+    NOPPad = EnableCodeCaching;
+  }
+
  bool Is64Bit = s == ARMEmitter::Size::i64Bit;
-  int Segments = Is64Bit ? 4 : 2;
+  const auto UpperBound = Is64Bit ? 4 : 2;
+  int Segments = MaxBytes ? (MaxBytes / 2) : UpperBound;
+
+  LOGMAN_THROW_A_FMT(MaxBytes >= 0 && MaxBytes <= (UpperBound * 2) && (MaxBytes & 1) == 0,
+                     "MaxBytes must be bounded in the range of [0, {}] and 16-bit aligned", UpperBound);
+  // If MaxBytes specified then make sure to sanity check incoming data.
+  LOGMAN_THROW_A_FMT(MaxBytes == 0 || (Constant >> (MaxBytes * 8)) == 0, "MaxBytes provided but data can't fit within provided range.");

  if (Is64Bit && ((~Constant) >> 16) == 0) {
-    movn(s, Reg, (~Constant) & 0xFFFF);
-
    if (NOPPad) {
      nop();
      nop();
      nop();
    }
+
+    movn(s, Reg, (~Constant) & 0xFFFF);
    return;
  }

@@ -436,17 +452,17 @@ void Arm64Emitter::LoadConstant(ARMEmitter::Size s, ARMEmitter::Register Reg, ui
    // If the upper 32-bits is all zero, we can now switch to a 32-bit move.
    s = ARMEmitter::Size::i32Bit;
    Is64Bit = false;
-    Segments = 2;
+    Segments = std::min(Segments, 2);
  }

  if (!Is64Bit && ((~Constant) & 0xFFFF0000) == 0) {
-    movn(s, Reg.W(), (~Constant) & 0xFFFF);
-
    if (NOPPad) {
      nop();
      nop();
      nop();
    }
+
+    movn(s, Reg.W(), (~Constant) & 0xFFFF);
    return;
  }

@@ -467,24 +483,24 @@ void Arm64Emitter::LoadConstant(ARMEmitter::Size s, ARMEmitter::Register Reg, ui
    // `movz` is better than `orr` since hardware will rename or merge if possible when `movz` is used.
    const auto IsImm = ARMEmitter::Emitter::IsImmLogical(Constant, RegSizeInBits(s));
    if (IsImm) {
-      orr(s, Reg, ARMEmitter::Reg::zr, Constant);
      if (NOPPad) {
        nop();
        nop();
        nop();
      }
+      orr(s, Reg, ARMEmitter::Reg::zr, Constant);
      return;
    }
  }

  // If we can't handle negatives with the orr, try with movn+movk
  if (Is64Bit && ((~Constant) >> 32) == 0) {
-    movn(s, Reg, (~Constant) & 0xFFFF);
-    movk(s, Reg, (Constant >> 16) & 0xFFFF, 16);
    if (NOPPad) {
      nop();
      nop();
    }
+    movn(s, Reg, (~Constant) & 0xFFFF);
+    movk(s, Reg, (Constant >> 16) & 0xFFFF, 16);
    return;
  }

@@ -661,7 +677,7 @@ void Arm64Emitter::FillSpecialRegs(ARMEmitter::Register TmpReg, ARMEmitter::Regi
  }
 }

-void Arm64Emitter::SpillStaticRegs(ARMEmitter::Register TmpReg, bool FPRs, uint32_t GPRSpillMask, uint32_t FPRSpillMask) {
+void Arm64Emitter::SpillStaticRegs(ARMEmitter::Register TmpReg, bool FPRs, uint32_t GPRSpillMask, uint32_t FPRSpillMask, bool NZCV) {
 #ifndef VIXL_SIMULATOR
  if (EmitterCTX->HostFeatures.SupportsAFP) {
    // Disable AFP features when spilling registers.
@@ -682,13 +698,15 @@ void Arm64Emitter::SpillStaticRegs(ARMEmitter::Register TmpReg, bool FPRs, uint3
  }
 #endif

-  // Regardless of what GPRs/FPRs we're spilling, we need to spill NZCV since it
-  // is always static and almost certainly clobbered by the subsequent code.
-  //
-  // TODO: Can we prove that NZCV is not used across a call in some cases and
-  // omit this? Might help x87 perf? Future idea.
-  mrs(TmpReg, ARMEmitter::SystemRegister::NZCV);
-  str(TmpReg.W(), STATE.R(), offsetof(FEXCore::Core::CpuStateFrame, State.flags[24]));
+  if (NZCV) {
+    // Regardless of what GPRs/FPRs we're spilling, we need to spill NZCV since it
+    // is always static and almost certainly clobbered by the subsequent code.
+    //
+    // TODO: Can we prove that NZCV is not used across a call in some cases and
+    // omit this? Might help x87 perf? Future idea.
+    mrs(TmpReg, ARMEmitter::SystemRegister::NZCV);
+    str(TmpReg.W(), STATE.R(), offsetof(FEXCore::Core::CpuStateFrame, State.flags[24]));
+  }

  // PF/AF are special, remove them from the mask
  uint32_t PFAFMask = ((1u << REG_PF.Idx()) | ((1u << REG_AF.Idx())));
@@ -710,7 +728,7 @@ void Arm64Emitter::SpillStaticRegs(ARMEmitter::Register TmpReg, bool FPRs, uint3
  }

  // Now handle PF/AF
-  if (PFAFSpillMask) {
+  if (NZCV && PFAFSpillMask) {
    auto PFOffset = offsetof(FEXCore::Core::CpuStateFrame, State.pf_raw);
    auto AFOffset = offsetof(FEXCore::Core::CpuStateFrame, State.af_raw);
    LOGMAN_THROW_A_FMT(PFAFSpillMask == PFAFMask, "PF/AF not spilled together");
@@ -760,7 +778,7 @@ void Arm64Emitter::SpillStaticRegs(ARMEmitter::Register TmpReg, bool FPRs, uint3
 }

 void Arm64Emitter::FillStaticRegs(bool FPRs, uint32_t GPRFillMask, uint32_t FPRFillMask, std::optional<ARMEmitter::Register> OptionalReg,
-                                  std::optional<ARMEmitter::Register> OptionalReg2) {
+                                  std::optional<ARMEmitter::Register> OptionalReg2, bool NZCV) {
  auto FindTempReg = [this](uint32_t* GPRFillMask) -> std::optional<ARMEmitter::Register> {
    for (auto Reg : StaticRegisters) {
      if (((1U << Reg.Idx()) & *GPRFillMask)) {
@@ -786,7 +804,7 @@ void Arm64Emitter::FillStaticRegs(bool FPRs, uint32_t GPRFillMask, uint32_t FPRF
  auto TmpReg = *OptionalReg;
  auto TmpReg2 = *OptionalReg2;

-#ifdef _M_ARM_64EC
+#ifdef ARCHITECTURE_arm64ec
  // Load STATE in from the CPU area as x28 is not callee saved in the ARM64EC ABI.
  ldr(TmpReg.X(), ARMEmitter::Reg::r18, TEB_CPU_AREA_OFFSET);
  ldr(STATE, TmpReg, CPU_AREA_EMULATOR_DATA_OFFSET);
@@ -794,13 +812,15 @@ void Arm64Emitter::FillStaticRegs(bool FPRs, uint32_t GPRFillMask, uint32_t FPRF

  ldr(REG_CALLRET_SP, STATE.R(), offsetof(FEXCore::Core::CpuStateFrame, State.callret_sp));

-  // Regardless of what GPRs/FPRs we're filling, we need to fill NZCV since it
-  // is always static and was almost certainly clobbered.
-  //
-  // TODO: Can we prove that NZCV is not used across a call in some cases and
-  // omit this? Might help x87 perf? Future idea.
-  ldr(TmpReg.W(), STATE.R(), offsetof(FEXCore::Core::CpuStateFrame, State.flags[24]));
-  msr(ARMEmitter::SystemRegister::NZCV, TmpReg);
+  if (NZCV) {
+    // Regardless of what GPRs/FPRs we're filling, we need to fill NZCV since it
+    // is always static and was almost certainly clobbered.
+    //
+    // TODO: Can we prove that NZCV is not used across a call in some cases and
+    // omit this? Might help x87 perf? Future idea.
+    ldr(TmpReg.W(), STATE.R(), offsetof(FEXCore::Core::CpuStateFrame, State.flags[24]));
+    msr(ARMEmitter::SystemRegister::NZCV, TmpReg);
+  }

  FillSpecialRegs(TmpReg, TmpReg2, true, FPRs);

@@ -861,7 +881,7 @@ void Arm64Emitter::FillStaticRegs(bool FPRs, uint32_t GPRFillMask, uint32_t FPRF
  }

  // Now handle PF/AF
-  if (PFAFFillMask) {
+  if (NZCV && PFAFFillMask) {
    LOGMAN_THROW_A_FMT(PFAFFillMask == PFAFMask, "PF/AF not filled together");

    ldp<ARMEmitter::IndexType::OFFSET>(REG_PF.W(), REG_AF.W(), STATE.R(), offsetof(FEXCore::Core::CpuStateFrame, State.pf_raw));
@@ -1,9 +1,10 @@
 // SPDX-License-Identifier: MIT
 #pragma once

+#include <FEXCore/Config/Config.h>
+
 #ifdef VIXL_DISASSEMBLER
 #include <aarch64/disasm-aarch64.h>
-#include <FEXCore/Config/Config.h>
 #include <FEXCore/fextl/memory.h>
 #include <FEXCore/fextl/vector.h>
 #endif
@@ -31,7 +32,7 @@ namespace FEXCore::CPU {
 // Contains the address to the currently available CPU state
 constexpr auto STATE = ARMEmitter::XReg::x28;

-#ifndef _M_ARM_64EC
+#ifndef ARCHITECTURE_arm64ec
 // GPR temporaries. Only x3 can be used across spill boundaries
 // so if these ever need to change, be very careful about that.
 constexpr auto TMP1 = ARMEmitter::XReg::x0;
@@ -108,7 +109,15 @@ class Arm64Emitter : public ARMEmitter::Emitter {
 public:
  Arm64Emitter(FEXCore::Context::ContextImpl* ctx, void* EmissionPtr = nullptr, size_t size = 0);

-  void LoadConstant(ARMEmitter::Size s, ARMEmitter::Register Reg, uint64_t Constant, bool NOPPad = false);
+  enum class PadType {
+    // Explicitly does not need padding, even if code-caching is enabled.
+    NOPAD,
+    // Explicitly needs padding, even if code-caching is disabled.
+    DOPAD,
+    // Choose to pad or not depending on if code-caching is enabled.
+    AUTOPAD,
+  };
+  void LoadConstant(ARMEmitter::Size s, ARMEmitter::Register Reg, uint64_t Constant, PadType Pad = PadType::NOPAD, int MaxBytes = 0);

 protected:
  FEXCore::Context::ContextImpl* EmitterCTX;
@@ -126,10 +135,10 @@ protected:
  // Returning REG_INVALID if there was no mapping.
  FEXCore::X86State::X86Reg GetX86RegRelationToARMReg(ARMEmitter::Register Reg);

-  void SpillStaticRegs(ARMEmitter::Register TmpReg, bool FPRs = true, uint32_t GPRSpillMask = ~0U, uint32_t FPRSpillMask = ~0U);
+  void SpillStaticRegs(ARMEmitter::Register TmpReg, bool FPRs = true, uint32_t GPRSpillMask = ~0U, uint32_t FPRSpillMask = ~0U, bool NZCV = true);
  void FillStaticRegs(bool FPRs = true, uint32_t GPRFillMask = ~0U, uint32_t FPRFillMask = ~0U,
                      std::optional<ARMEmitter::Register> OptionalReg = std::nullopt,
-                      std::optional<ARMEmitter::Register> OptionalReg2 = std::nullopt);
+                      std::optional<ARMEmitter::Register> OptionalReg2 = std::nullopt, bool NZCV = true);

  // Register 0-18 + 29 + 30 are caller saved
  static constexpr uint32_t CALLER_GPR_MASK = 0b0110'0000'0000'0111'1111'1111'1111'1111U;
@@ -272,6 +281,8 @@ protected:

  FEX_CONFIG_OPT(Disassemble, DISASSEMBLE);
 #endif
+
+  FEX_CONFIG_OPT(EnableCodeCaching, ENABLECODECACHINGWIP);
 };

 } // namespace FEXCore::CPU
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: MIT
+#include "FEXCore/Config/Config.h"
 #include "Interface/Context/Context.h"
 #include "Interface/Core/CPUBackend.h"
 #include "Interface/Core/LookupCache.h"
@@ -277,37 +278,37 @@ namespace CPU {
    : ThreadState(ThreadState)
    , CodeBuffers(CodeBuffers) {

-    auto& Common = ThreadState->CurrentFrame->Pointers.Common;
+    auto& Ptrs = ThreadState->CurrentFrame->Pointers;

    // Initialize named vector constants.
    for (size_t i = 0; i < FEXCore::IR::NamedVectorConstant::NAMED_VECTOR_CONST_POOL_MAX; ++i) {
-      Common.NamedVectorConstantPointers[i] = reinterpret_cast<uint64_t>(NamedVectorConstants[i]);
+      Ptrs.NamedVectorConstantPointers[i] = reinterpret_cast<uint64_t>(NamedVectorConstants[i]);
    }

    // Copy named vector constants.
-    memcpy(Common.NamedVectorConstants, NamedVectorConstants, sizeof(NamedVectorConstants));
+    memcpy(Ptrs.NamedVectorConstants, NamedVectorConstants, sizeof(NamedVectorConstants));

    // Initialize Indexed named vector constants.
-    Common.IndexedNamedVectorConstantPointers[FEXCore::IR::IndexNamedVectorConstant::INDEXED_NAMED_VECTOR_PSHUFLW] =
+    Ptrs.IndexedNamedVectorConstantPointers[FEXCore::IR::IndexNamedVectorConstant::INDEXED_NAMED_VECTOR_PSHUFLW] =
      reinterpret_cast<uint64_t>(PSHUFLW_LUT.data());
-    Common.IndexedNamedVectorConstantPointers[FEXCore::IR::IndexNamedVectorConstant::INDEXED_NAMED_VECTOR_PSHUFHW] =
+    Ptrs.IndexedNamedVectorConstantPointers[FEXCore::IR::IndexNamedVectorConstant::INDEXED_NAMED_VECTOR_PSHUFHW] =
      reinterpret_cast<uint64_t>(PSHUFHW_LUT.data());
-    Common.IndexedNamedVectorConstantPointers[FEXCore::IR::IndexNamedVectorConstant::INDEXED_NAMED_VECTOR_PSHUFD] =
+    Ptrs.IndexedNamedVectorConstantPointers[FEXCore::IR::IndexNamedVectorConstant::INDEXED_NAMED_VECTOR_PSHUFD] =
      reinterpret_cast<uint64_t>(PSHUFD_LUT.data());
-    Common.IndexedNamedVectorConstantPointers[FEXCore::IR::IndexNamedVectorConstant::INDEXED_NAMED_VECTOR_SHUFPS] =
+    Ptrs.IndexedNamedVectorConstantPointers[FEXCore::IR::IndexNamedVectorConstant::INDEXED_NAMED_VECTOR_SHUFPS] =
      reinterpret_cast<uint64_t>(SHUFPS_LUT.data());
-    Common.IndexedNamedVectorConstantPointers[FEXCore::IR::IndexNamedVectorConstant::INDEXED_NAMED_VECTOR_DPPS_MASK] =
+    Ptrs.IndexedNamedVectorConstantPointers[FEXCore::IR::IndexNamedVectorConstant::INDEXED_NAMED_VECTOR_DPPS_MASK] =
      reinterpret_cast<uint64_t>(DPPS_MASK.data());
-    Common.IndexedNamedVectorConstantPointers[FEXCore::IR::IndexNamedVectorConstant::INDEXED_NAMED_VECTOR_DPPD_MASK] =
+    Ptrs.IndexedNamedVectorConstantPointers[FEXCore::IR::IndexNamedVectorConstant::INDEXED_NAMED_VECTOR_DPPD_MASK] =
      reinterpret_cast<uint64_t>(DPPD_MASK.data());
-    Common.IndexedNamedVectorConstantPointers[FEXCore::IR::IndexNamedVectorConstant::INDEXED_NAMED_VECTOR_PBLENDW] =
+    Ptrs.IndexedNamedVectorConstantPointers[FEXCore::IR::IndexNamedVectorConstant::INDEXED_NAMED_VECTOR_PBLENDW] =
      reinterpret_cast<uint64_t>(PBLENDW_LUT.data());

 #ifndef FEX_DISABLE_TELEMETRY
    // Fill in telemetry values
    for (size_t i = 0; i < FEXCore::Telemetry::TYPE_LAST; ++i) {
      auto& Telem = FEXCore::Telemetry::GetTelemetryValue(static_cast<FEXCore::Telemetry::TelemetryType>(i));
-      Common.TelemetryValueAddresses[i] = reinterpret_cast<uint64_t>(&Telem);
+      Ptrs.TelemetryValueAddresses[i] = reinterpret_cast<uint64_t>(&Telem);
    }
 #endif
  }
@@ -349,7 +350,7 @@ namespace CPU {
  }

  CodeBuffer::CodeBuffer(size_t Size)
-    : Size(Size) {
+    : AllocatedSize(Size) {
    Ptr = static_cast<uint8_t*>(FEXCore::Allocator::VirtualAlloc(Size, true));
    LOGMAN_THROW_A_FMT(!!Ptr, "Couldn't allocate code buffer");

@@ -366,7 +367,7 @@ namespace CPU {
  }

  CodeBuffer::~CodeBuffer() {
-    FEXCore::Allocator::VirtualFree(Ptr, Size);
+    FEXCore::Allocator::VirtualFree(Ptr, AllocatedSize);
  }

  auto CodeBufferManager::AllocateNew(size_t Size) -> fextl::shared_ptr<CodeBuffer> {
@@ -407,7 +408,13 @@ namespace CPU {

  fextl::shared_ptr<CodeBuffer> CodeBufferManager::GetLatest() {
    if (!Latest) {
-      AllocateNew(INITIAL_CODE_SIZE);
+      if (FEXCore::Config::Get_ENABLECODECACHINGWIP()) {
+        // Start with a larger code buffer to avoid resizes that would discard
+        // code loaded from caches
+        AllocateNew(MAX_CODE_SIZE);
+      } else {
+        AllocateNew(INITIAL_CODE_SIZE);
+      }
    }
    return Latest;
  }
@@ -418,7 +425,7 @@ namespace CPU {
      return GetLatest();
    }

-    auto NewCodeBufferSize = GetLatest()->Size;
+    auto NewCodeBufferSize = GetLatest()->AllocatedSize;
    NewCodeBufferSize = std::min<size_t>(NewCodeBufferSize * 2, MAX_CODE_SIZE);
    return AllocateNew(NewCodeBufferSize);
  }
@@ -428,7 +435,7 @@ namespace CPU {
    auto CheckCodeBuffer = [](CodeBuffer& Buffer, uintptr_t Address) {
      // The last page of the code buffer is protected, so we need to exclude it from the valid range
      // when checking if the address is in the code buffer.
-      uintptr_t LastPageAddr = AlignDown(reinterpret_cast<uintptr_t>(Buffer.Ptr) + Buffer.Size - 1, FEXCore::Utils::FEX_PAGE_SIZE);
+      uintptr_t LastPageAddr = AlignDown(reinterpret_cast<uintptr_t>(Buffer.Ptr) + Buffer.AllocatedSize - 1, FEXCore::Utils::FEX_PAGE_SIZE);
      return (Address >= reinterpret_cast<uintptr_t>(Buffer.Ptr) && Address < LastPageAddr);
    };

@@ -43,7 +43,7 @@ struct GuestToHostMap;
 namespace CPU {
  struct CodeBuffer {
    uint8_t* Ptr;
-    size_t Size;
+    size_t AllocatedSize; // including guard page; see UsableSize()

    fextl::unique_ptr<GuestToHostMap> LookupCache;

@@ -54,6 +54,11 @@ namespace CPU {
    CodeBuffer& operator=(CodeBuffer&&) = delete;

    ~CodeBuffer();
+
+    /// Returns the number of bytes available for storing code
+    size_t UsableSize() const {
+      return AllocatedSize - FEXCore::Utils::FEX_PAGE_SIZE;
+    }
  };

  /**
@@ -24,7 +24,7 @@ $end_info$

 namespace FEXCore {
 namespace ProductNames {
-#ifdef _M_ARM_64
+#ifdef ARCHITECTURE_arm64
  static const char ARM_UNKNOWN[] = "Unknown ARM CPU";
  static const char ARM_A57[] = "Cortex-A57";
  static const char ARM_A72[] = "Cortex-A72";
@@ -95,7 +95,7 @@ namespace ProductNames {
  static const char ARM_Ampere_1[] = "AmpereOne";
  static const char ARM_Ampere_1A[] = "AmpereOneA";
  static const char ARM_Ampere_1B[] = "AmpereOneB";
-#else
+  static const char ARM_Ampere_1C[] = "AmpereOneC";
 #endif
 } // namespace ProductNames

@@ -140,7 +140,7 @@ constexpr uint32_t FAMILY_IDENTIFIER = GenerateFamily(CPUFamily {
 });
 #endif

-#ifdef _M_ARM_64
+#ifdef ARCHITECTURE_arm64
 uint32_t GetCycleCounterFrequency() {
  uint64_t Result {};
  __asm("mrs %[Res], CNTFRQ_EL0" : [Res] "=r"(Result));
@@ -154,6 +154,7 @@ uint32_t GetCPUID_TPIDRRO() {
 }

 void CPUIDEmu::SetupHostHybridFlag() {
+  FEX_CONFIG_OPT(HideHybrid, HIDEHYBRID);
  PerCPUData.resize(Cores);

  uint64_t MIDR {};
@@ -170,6 +171,11 @@ void CPUIDEmu::SetupHostHybridFlag() {
    MIDR = NewMIDR;
  }

+  if (HideHybrid()) {
+    // Hide the hybrid flag.
+    Hybrid = false;
+  }
+
  struct CPUMIDR {
    uint8_t Implementer;
    uint16_t Part;
@@ -180,7 +186,7 @@ void CPUIDEmu::SetupHostHybridFlag() {
  // CPU priority order
  // This is mostly arbitrary but will sort by some sort of CPU priority by performance
  // Relative list so things they will commonly end up in big.little configurations sort of relate
-  static constexpr std::array<CPUMIDR, 66> CPUMIDRs = {{
+  static constexpr std::array<CPUMIDR, 67> CPUMIDRs = {{
    // Typically big CPU cores
    {0x51, 0x001, 1, ProductNames::ARM_ORYON_1}, // Qualcomm Oryon-1

@@ -229,6 +235,7 @@ void CPUIDEmu::SetupHostHybridFlag() {
    {0xc0, 0xac3, 1, ProductNames::ARM_Ampere_1},  // AmpereOne
    {0xc0, 0xac4, 1, ProductNames::ARM_Ampere_1A}, // AmpereOneA
    {0xc0, 0xac5, 1, ProductNames::ARM_Ampere_1B}, // AmpereOneB
+    {0xc0, 0xac7, 1, ProductNames::ARM_Ampere_1C}, // AmpereOneC

    {0x4e, 0x010, 1, ProductNames::ARM_Olympus}, // Olympus
    {0x4e, 0x004, 1, ProductNames::ARM_Carmel},  // Carmel
@@ -386,7 +393,8 @@ void CPUIDEmu::SetupHostHybridFlag() {
  } else {
    // If we aren't hybrid then just claim everything is big
    for (size_t i = 0; i < Cores; ++i) {
-      uint32_t MIDR = PerCPUData[i].MIDR;
+      const auto MIDRIndex = HideHybrid() ? 0 : i;
+      uint32_t MIDR = PerCPUData[MIDRIndex].MIDR;
      auto MIDROption = FindDefinedMIDR(MIDR);

      PerCPUData[i].IsBig = true;
@@ -857,10 +865,10 @@ FEXCore::CPUID::FunctionResults CPUIDEmu::Function_4000_0001h(uint32_t Leaf) con
  constexpr uint32_t MaximumSubLeafNumber = 2;
  if (Leaf == 0) {
    // EAX[3:0] Is the host architecture that FEX is running under
-#ifdef _M_X86_64
+#ifdef ARCHITECTURE_x86_64
    // EAX[3:0] = 1 = x86_64 host architecture
    Res.eax |= 0b0001;
-#elif defined(_M_ARM_64)
+#elif defined(ARCHITECTURE_arm64)
    // EAX[3:0] = 2 = AArch64 host architecture
    Res.eax |= 0b0010;
 #else
@@ -1230,7 +1238,7 @@ CPUIDEmu::CPUIDEmu(const FEXCore::Context::ContextImpl* ctx)

  SetupFeatures();

-#ifdef _M_ARM_64
+#ifdef ARCHITECTURE_arm64
  if (SupportsCPUIndexInTPIDRRO) {
    GetCPUID = GetCPUID_TPIDRRO;
  }
@@ -159,7 +159,7 @@ private:

  struct CPUData {
    const char* ProductName {};
-#ifdef _M_ARM_64
+#ifdef ARCHITECTURE_arm64
    uint32_t MIDR {};
 #endif
    bool IsBig {};
@@ -3,11 +3,16 @@

 #include <Interface/Context/Context.h>
 #include <Interface/Core/ArchHelpers/Arm64Emitter.h>
+#include <Interface/Core/Dispatcher/Dispatcher.h>
+#include <Interface/Core/JIT/DebugData.h>
 #include <Interface/Core/JIT/Relocations.h>
 #include <Interface/Core/LookupCache.h>
+#include <Interface/Core/OpcodeDispatcher.h>
+#include <Interface/IR/PassManager.h>

 #include <FEXCore/Core/Thunks.h>
 #include <FEXCore/HLE/SourcecodeResolver.h>
+#include <FEXCore/HLE/SyscallHandler.h>

 #include <FEXHeaderUtils/Filesystem.h>

@@ -227,37 +232,32 @@ uint64_t CodeCache::ComputeCodeMapId(std::string_view Filename, int FD) {
 }

 struct CodeCacheHeader {
-  char Magic[4] = {'F', 'X', 'C', 'C'};
+  std::array<char, 4> Magic = ExpectedMagic;
  uint32_t FormatVersion = 1;
-  char FEXVersion[8] = {};
+  uint8_t FEXVersion[20] = {};
  uint32_t NumBlocks;
  uint32_t NumCodePages;
  uint32_t CodeBufferSize;
  uint32_t NumRelocations;
+  uint32_t padding;
  uint64_t SerializedBaseAddress;
  // TODO: Consider including information from LookupCache.BlockLinks
+
+  static constexpr std::array<char, 4> ExpectedMagic = {'F', 'X', 'C', 'C'};
 };

-void CodeCache::LoadData(Core::InternalThreadState& Thread, std::byte* MappedCacheFile, const ExecutableFileSectionInfo& GuestRIPLookup) {
-  // TODO
-}
-
 template<typename T>
-static constexpr auto IsOrderedContainer(const T&) -> std::false_type;
-template<typename... T>
-static constexpr auto IsOrderedContainer(const std::map<T...>&) -> std::true_type;
-template<typename... T>
-static constexpr auto IsOrderedContainer(const std::set<T...>&) -> std::true_type;
+concept OrderedContainer = requires { typename T::key_compare; };

 bool CodeCache::SaveData(Core::InternalThreadState& Thread, int fd, const ExecutableFileSectionInfo& SourceBinary, uint64_t SerializedBaseAddress) {
  auto CodeBuffer = CTX.GetLatest();
  auto& LookupCache = *Thread.LookupCache->Shared;
-
  auto Relocations = Thread.CPUBackend->TakeRelocations(SourceBinary.FileStartVA);

  // Write file header
-  CodeCacheHeader header;
-  memcpy(&header.FEXVersion[0], GIT_SHORT_HASH, strlen(GIT_SHORT_HASH));
+  CodeCacheHeader header {};
+  static_assert(GIT_HASH.size() == sizeof(header.FEXVersion));
+  std::ranges::copy(GIT_HASH, header.FEXVersion);
  header.NumBlocks = LookupCache.BlockList.size();
  header.NumCodePages = LookupCache.CodePages.size();
  header.CodeBufferSize = CTX.LatestOffset;
@@ -268,7 +268,7 @@ bool CodeCache::SaveData(Core::InternalThreadState& Thread, int fd, const Execut
  // Dump guest<->host block mappings
  {
    // Cache contents must be deterministic, so copy the unordered block list and then sort by key
-    static_assert(!decltype(IsOrderedContainer(LookupCache.BlockList))::value, "Already deterministic; drop temporary container");
+    static_assert(!OrderedContainer<decltype(LookupCache.BlockList)>, "Already deterministic; drop temporary container");
    fextl::vector<std::pair<uint64_t, const GuestToHostMap::BlockEntry*>> BlockList;
    BlockList.reserve(LookupCache.BlockList.size());
    for (auto& [Guest, BlockEntry] : LookupCache.BlockList) {
@@ -309,7 +309,7 @@ bool CodeCache::SaveData(Core::InternalThreadState& Thread, int fd, const Execut
  }

  // Dump the host code (relocated for position-independent serialization)
-  std::vector CodeBufferData(reinterpret_cast<std::byte*>(CodeBuffer->Ptr), reinterpret_cast<std::byte*>(CodeBuffer->Ptr) + CTX.LatestOffset);
+  std::span CodeBufferData(reinterpret_cast<std::byte*>(CodeBuffer->Ptr), reinterpret_cast<std::byte*>(CodeBuffer->Ptr) + CTX.LatestOffset);
  if (!ApplyCodeRelocations(SerializedBaseAddress, CodeBufferData, Relocations, true)) {
    LOGMAN_THROW_A_FMT(false, "Failed to apply code relocations");
    return false;
@@ -317,18 +317,308 @@ bool CodeCache::SaveData(Core::InternalThreadState& Thread, int fd, const Execut
  ::write(fd, CodeBufferData.data(), CodeBufferData.size());

  // Dump code pages
-  static_assert(decltype(IsOrderedContainer(LookupCache.CodePages))::value, "Non-deterministic data source");
-  for (auto& [Page, Entrypoints] : LookupCache.CodePages) {
-    static_assert(sizeof(Page) == 8, "Breaking change in code cache data layout");
-    ::write(fd, &Page, sizeof(Page));
+  static_assert(OrderedContainer<decltype(LookupCache.CodePages)>, "Non-deterministic data source");
+  for (const auto& [PageIndex, Entrypoints] : LookupCache.CodePages) {
+    uint64_t PageAddr = (PageIndex << 12) - SourceBinary.FileStartVA;
+    ::write(fd, &PageAddr, sizeof(PageAddr));
    uint64_t NumEntrypoints = Entrypoints.size();
    ::write(fd, &NumEntrypoints, sizeof(NumEntrypoints));
-    ::write(fd, Entrypoints.data(), Entrypoints.size() * sizeof(Entrypoints[0]));
+    for (uint64_t Entrypoint : Entrypoints) {
+      Entrypoint -= SourceBinary.FileStartVA;
+      ::write(fd, &Entrypoint, sizeof(Entrypoint));
+    }
  }

  return true;
 }

+bool CodeCache::LoadData(Core::InternalThreadState* Thread, std::byte* MappedCacheFile, const ExecutableFileSectionInfo& BinarySection) {
+  if (!EnableCodeCaching) {
+    return true;
+  }
+
+  namespace ranges = std::ranges;
+
+  // Read file header
+  CodeCacheHeader header {};
+  ::memcpy(&header, MappedCacheFile, sizeof(header));
+  MappedCacheFile += sizeof(header);
+
+  LogMan::Msg::IFmt("Cache load: {:5} blocks; base={:#14x}; off={:#9x}-{:#09x}; {:016x} {}", header.NumBlocks, BinarySection.FileStartVA,
+                    BinarySection.BeginVA - BinarySection.FileStartVA, BinarySection.EndVA - BinarySection.FileStartVA,
+                    BinarySection.FileInfo.FileId, BinarySection.FileInfo.Filename);
+
+  if (!ranges::equal(header.Magic, header.ExpectedMagic)) {
+    LogMan::Msg::EFmt("Invalid cache file header");
+    return false;
+  }
+
+  if (!ranges::equal(header.FEXVersion, GIT_HASH)) {
+    LogMan::Msg::IFmt("Cache generated from old FEX version {:02x}, current is {:02x}; skipping", fmt::join(header.FEXVersion, ""),
+                      fmt::join(GIT_HASH, ""));
+    return false;
+  }
+
+  if (header.NumBlocks == 0) {
+    // Valid caches are never empty
+    LogMan::Msg::IFmt("Code cache empty, aborting");
+    return false;
+  }
+
+  // Read guest<->host block mappings
+  using BlockListEntry = decltype(GuestToHostMap::BlockList)::value_type;
+  fextl::vector<BlockListEntry> BlockList(header.NumBlocks);
+  {
+    for (auto& BlockPtr : BlockList) {
+      ::memcpy(&BlockPtr.first, MappedCacheFile, sizeof(BlockPtr.first));
+      MappedCacheFile += sizeof(BlockPtr.first);
+      ::memcpy(&BlockPtr.second.HostCode, MappedCacheFile, sizeof(BlockPtr.second.HostCode));
+      MappedCacheFile += sizeof(BlockPtr.second.HostCode);
+      uint64_t NumGuestPages;
+      ::memcpy(&NumGuestPages, MappedCacheFile, sizeof(NumGuestPages));
+      MappedCacheFile += sizeof(NumGuestPages);
+
+      BlockPtr.second.CodePages.resize(NumGuestPages);
+      ::memcpy(BlockPtr.second.CodePages.data(), MappedCacheFile, std::span {BlockPtr.second.CodePages}.size_bytes());
+      MappedCacheFile += std::span {BlockPtr.second.CodePages}.size_bytes();
+    }
+
+    // Consistency check: VMA regions at the top and end should belong to the same file
+    auto [min_val, max_val] = ranges::minmax_element(BlockList, std::less {}, &decltype(BlockList)::value_type::first);
+    auto MinBound = CTX.SyscallHandler->LookupExecutableFileSection(Thread, min_val->first + BinarySection.FileStartVA);
+    auto MaxBound = CTX.SyscallHandler->LookupExecutableFileSection(Thread, max_val->first + BinarySection.FileStartVA);
+    if (&MinBound->FileInfo != &BinarySection.FileInfo || &MaxBound->FileInfo != &BinarySection.FileInfo) {
+      ERROR_AND_DIE_FMT("Cached blocks offsets {:#x}-{:#x} out of bounds for guest library {} ({:016x} @ {:#x}) while trying to load "
+                        "section {:#x}-{:#x}!",
+                        min_val->first, max_val->first, BinarySection.FileInfo.Filename, BinarySection.FileInfo.FileId,
+                        BinarySection.FileStartVA, BinarySection.BeginVA, BinarySection.EndVA);
+    }
+
+    // Constrain BlockList to the given ExecutableFileSectionInfo
+    LOGMAN_THROW_A_FMT(ranges::is_sorted(BlockList, [](auto& a, auto& b) { return a.first < b.first; }), "Expected sorted block list");
+    auto begin = ranges::lower_bound(BlockList, BinarySection.BeginVA - BinarySection.FileStartVA, std::less {}, &BlockListEntry::first);
+    auto end =
+      ranges::upper_bound(begin, BlockList.end(), BinarySection.EndVA - BinarySection.FileStartVA - 1, std::less {}, &BlockListEntry::first);
+    BlockList.erase(end, BlockList.end());
+    BlockList.erase(BlockList.begin(), begin);
+    if (BlockList.empty()) {
+      // Not an error since there is just no data to load
+      LogMan::Msg::IFmt("No blocks cached in this range, aborting");
+      return true;
+    }
+  }
+
+  // Read relocations
+  fextl::vector<FEXCore::CPU::Relocation> Relocations(header.NumRelocations, FEXCore::CPU::Relocation::Default());
+  ::memcpy(Relocations.data(), MappedCacheFile, Relocations.size() * sizeof(Relocations[0]));
+  MappedCacheFile += Relocations.size() * sizeof(Relocations[0]);
+
+  // Pad to next page in file, which contains CodeBuffer data
+  MappedCacheFile = reinterpret_cast<std::byte*>(AlignUp(reinterpret_cast<uintptr_t>(MappedCacheFile), Utils::FEX_PAGE_SIZE));
+
+  // Prepare CodeBuffer: Page aligned and big enough to hold all cached data
+  auto Lock = std::unique_lock {CTX.CodeBufferWriteMutex};
+  if (Thread) {
+    if (auto Prev = Thread->CPUBackend->CheckCodeBufferUpdate()) {
+      Allocator::VirtualDontNeed(Thread->CallRetStackBase, FEXCore::Core::InternalThreadState::CALLRET_STACK_SIZE);
+      auto lk = Thread->LookupCache->AcquireWriteLock();
+      Thread->LookupCache->ChangeGuestToHostMapping(*Prev, *CTX.GetLatest()->LookupCache, lk);
+    }
+  }
+
+  auto CodeBuffer = CTX.GetLatest();
+  LOGMAN_THROW_A_FMT(reinterpret_cast<uintptr_t>(CodeBuffer->Ptr) % 0x1000 == 0, "Expected CodeBuffer base to be page-aligned");
+  const auto Delta = AlignUp(CTX.LatestOffset, 0x1000) - CTX.LatestOffset;
+  CTX.LatestOffset += Delta;
+
+  while (CTX.LatestOffset + header.CodeBufferSize > CodeBuffer->UsableSize()) {
+    if (Thread) {
+      CTX.ClearCodeCache(Thread);
+      CodeBuffer = CTX.GetLatest();
+      LogMan::Msg::IFmt("Increased code buffer size to {} MiB for cache load", CodeBuffer->AllocatedSize / 1024 / 1024);
+    } else {
+      ERROR_AND_DIE_FMT("Cannot extend codebuffer without thread!");
+    }
+  }
+
+  // Read CodeBuffer data from file. Make sure the destination is page-aligned.
+  // TODO: Only load the data needed for the selected section
+  auto CodeBufferRange =
+    std::as_writable_bytes(std::span {CodeBuffer->Ptr, CodeBuffer->UsableSize()}).subspan(CTX.LatestOffset, header.CodeBufferSize);
+  ::memcpy(CodeBufferRange.data(), MappedCacheFile, header.CodeBufferSize);
+  MappedCacheFile += header.CodeBufferSize;
+  CTX.LatestOffset += header.CodeBufferSize;
+
+  // Apply FEX relocations
+  auto Ret = ApplyCodeRelocations(BinarySection.FileStartVA, CodeBufferRange, Relocations, false);
+  LOGMAN_THROW_A_FMT(Ret == true, "Failed to apply code cache relocations");
+
+  {
+    auto& LookupCache = *CodeBuffer->LookupCache;
+    auto WriteLock = LookupCache.AcquireWriteLock();
+
+    // Register blocks to LookupCache
+    for (auto& [Guest, Host] : BlockList) {
+      for (auto& CodePage : Host.CodePages) {
+        CodePage += BinarySection.FileStartVA;
+      }
+      auto HostCode = reinterpret_cast<void*>(Host.HostCode + reinterpret_cast<uintptr_t>(CodeBufferRange.data()));
+      LookupCache.AddBlockMapping(Guest + BinarySection.FileStartVA, std::move(Host.CodePages), HostCode, WriteLock);
+    }
+
+    // Register loaded code ranges
+    fextl::vector<uint64_t> Entrypoints;
+    for (uint32_t i = 0; i < header.NumCodePages; ++i) {
+      uint64_t CodePage;
+      memcpy(&CodePage, MappedCacheFile, sizeof(CodePage));
+      CodePage += BinarySection.FileStartVA;
+      MappedCacheFile += sizeof(CodePage);
+
+      uint64_t NumEntrypoints;
+      memcpy(&NumEntrypoints, MappedCacheFile, sizeof(NumEntrypoints));
+      MappedCacheFile += sizeof(NumEntrypoints);
+
+      Entrypoints.resize(NumEntrypoints);
+      memcpy(Entrypoints.data(), MappedCacheFile, NumEntrypoints * sizeof(Entrypoints[0]));
+      MappedCacheFile += NumEntrypoints * sizeof(Entrypoints[0]);
+      for (auto& Entrypoint : Entrypoints) {
+        Entrypoint += BinarySection.FileStartVA;
+      }
+
+      if (LookupCache.AddBlockExecutableRange(Entrypoints, CodePage, FEXCore::Utils::FEX_PAGE_SIZE, WriteLock)) {
+        CTX.SyscallHandler->MarkGuestExecutableRange(Thread, CodePage, FEXCore::Utils::FEX_PAGE_SIZE);
+      }
+    }
+  }
+
+  if (EnableCodeCacheValidation) {
+    fextl::set<uint64_t> GuestBlocks, HostBlocks;
+    for (auto& [Guest, Host] : BlockList) {
+      GuestBlocks.insert(Guest + BinarySection.FileStartVA);
+      HostBlocks.insert(Host.HostCode);
+    }
+
+    Validate(BinarySection, std::move(GuestBlocks), HostBlocks, CodeBufferRange);
+  }
+
+  return true;
+}
+
+void CodeCache::Validate(const ExecutableFileSectionInfo& Section, fextl::set<uint64_t> GuestBlocks, const fextl::set<uint64_t>& HostBlocks,
+                         std::span<std::byte> CachedCode) {
+  LOGMAN_THROW_A_FMT(!HostBlocks.empty(), "Tried to validate without any host blocks");
+  // Skip any cached data before the first host block
+  CachedCode = CachedCode.subspan(*HostBlocks.begin() - sizeof(CPU::CPUBackend::JITCodeHeader));
+
+  if (!ValidationCTX) {
+    ValidationCTX.reset(static_cast<ContextImpl*>(FEXCore::Context::Context::CreateNewContext(CTX.HostFeatures).release()));
+    ValidationCTX->SetSignalDelegator(CTX.SignalDelegation);
+    ValidationCTX->SetSyscallHandler(CTX.SyscallHandler);
+    ValidationCTX->SetThunkHandler(CTX.ThunkHandler);
+    if (!ValidationCTX->InitCore()) {
+      ERROR_AND_DIE_FMT("Failed to create cache load validation context");
+    }
+
+    ValidationThread.reset(ValidationCTX->CreateThread(0, 0, nullptr));
+
+    auto Frame = ValidationThread->CurrentFrame;
+    Frame->State.segment_arrays[FEXCore::Core::CPUState::SEGMENT_ARRAY_INDEX_GDT] = &ValidationGDT[0];
+    Frame->State.segment_arrays[FEXCore::Core::CPUState::SEGMENT_ARRAY_INDEX_LDT] = &ValidationGDT[0];
+    Frame->State.cs_idx = 0;
+    Frame->State.cs_cached = 0;
+
+    if (ValidationCTX->Config.Is64BitMode()) {
+      ValidationGDT[0].L = 1; // L = Long Mode = 64-bit
+      ValidationGDT[0].D = 0; // D = Default Operand Size = Reserved
+    } else {
+      ValidationGDT[0].L = 0; // L = Long Mode = 32-bit
+      ValidationGDT[0].D = 1; // D = Default Operand Size = 32-bit
+    }
+  }
+
+  auto NewCodeBuffer = ValidationCTX->GetLatest();
+  while (CachedCode.size_bytes() > NewCodeBuffer->UsableSize()) {
+    ValidationCTX->ClearCodeCache(ValidationThread.get());
+    NewCodeBuffer = ValidationCTX->GetLatest();
+    LogMan::Msg::IFmt("Increased cache validation code buffer size to {} MiB", NewCodeBuffer->AllocatedSize / 1024 / 1024);
+  }
+
+  std::span<std::byte> CodeBufferRangeRef =
+    std::as_writable_bytes(std::span {NewCodeBuffer->Ptr, NewCodeBuffer->Ptr + NewCodeBuffer->UsableSize()}).subspan(0, CachedCode.size_bytes());
+
+  while (!GuestBlocks.empty()) {
+    auto [CompiledBlocks, _, _2, _3, _4] = ValidationCTX->CompileCode(ValidationThread.get(), *GuestBlocks.begin(), 0 /* TODO: Set MaxInst? */);
+    for (auto& Entry : CompiledBlocks.EntryPoints) {
+      GuestBlocks.erase(Entry.first);
+    }
+  }
+
+  // Patch FEX-internal function addresses with values from the main Context to ensure the code blocks are comparable
+  auto NewRelocations = ValidationThread->CPUBackend->TakeRelocations(Section.FileStartVA);
+  NewRelocations.erase(std::remove_if(NewRelocations.begin(), NewRelocations.end(), [](const CPU::Relocation& Reloc) {
+    return Reloc.Header.Type != CPU::RelocationTypes::RELOC_NAMED_SYMBOL_LITERAL && Reloc.Header.Type != CPU::RelocationTypes::RELOC_NAMED_THUNK_MOVE;
+  }));
+  (void)ApplyCodeRelocations(Section.FileStartVA, CodeBufferRangeRef, NewRelocations, false);
+
+  if (ValidationCTX->LatestOffset <= CodeBufferRangeRef.size()) {
+    // Reference compilation produced fewer bytes than our cache, so validation is going to fail.
+    // Make sure we don't output any garbage bytes though.
+    CodeBufferRangeRef = CodeBufferRangeRef.subspan(0, ValidationCTX->LatestOffset);
+  }
+
+  auto [Mismatch, _] = std::mismatch(CodeBufferRangeRef.begin(), CodeBufferRangeRef.end(), CachedCode.begin());
+  if (Mismatch != CodeBufferRangeRef.end()) {
+    // Align down to instruction size
+    auto Idx = AlignDown(std::distance(CodeBufferRangeRef.begin(), Mismatch), 4);
+
+    auto BlockIt = std::prev(HostBlocks.lower_bound(*HostBlocks.begin() + Idx + 1));
+    std::optional<uint64_t> GuestBlockAddr;
+    std::optional<uint64_t> GuestBlockAddrRef;
+    if (BlockIt != HostBlocks.end()) {
+      for (int i : {0, 1}) {
+        std::span Buffer = (i == 0 ? CachedCode : CodeBufferRangeRef);
+
+        // Second instruction is always a constant load for relative offset to the (multi)block start
+        int32_t addr = (*reinterpret_cast<uint32_t*>(&Buffer[*BlockIt - *HostBlocks.begin() + 4]) & 0x3ff'ffe0) << 11;
+        addr >>= 14;
+        auto header = reinterpret_cast<CPU::CPUBackend::JITCodeHeader*>(&Buffer[*BlockIt - *HostBlocks.begin() + 4 + addr]);
+        auto tail = reinterpret_cast<CPU::CPUBackend::JITCodeTail*>(reinterpret_cast<uintptr_t>(header) + header->OffsetToBlockTail);
+        (i == 0 ? GuestBlockAddr : GuestBlockAddrRef) = tail->RIP - Section.FileStartVA;
+        LogMan::Msg::EFmt("Recorded rip {}: {:#x} (offset {:#x})", i, tail->RIP, tail->RIP - Section.FileStartVA);
+
+        if (i == 1) {
+          if (tail->RIP >= Section.BeginVA && tail->RIP < Section.EndVA) {
+            auto [IRView, TotalInstructions, TotalInstructionsLength, StartAddr, Length, _] =
+              ValidationCTX->GenerateIR(ValidationThread.get(), tail->RIP, false, FEXCore::Config::Get_MAXINST());
+            fextl::stringstream ss;
+            FEXCore::IR::Dump(&ss, &*IRView);
+            LogMan::Msg::EFmt("IR:\n{}", ss.str());
+          } else {
+            LogMan::Msg::EFmt("Can't dump IR for out-of-range RIP {:#x}", tail->RIP);
+          }
+        }
+      }
+    }
+
+    fextl::string GuestBlockInfo = "UNKNOWN";
+    if (GuestBlockAddr) {
+      GuestBlockInfo = fextl::fmt::format("{:#x}", GuestBlockAddr.value());
+    }
+    if (GuestBlockAddr != GuestBlockAddrRef) {
+      GuestBlockInfo += " (MISMATCH)";
+    }
+    ERROR_AND_DIE_FMT("Cache validation failed at offset {:#x}: {:02x} <-> {:02x} (at {} <-> {}, guest block {})", Idx,
+                      fmt::join(CachedCode.subspan(Idx, 4), ""), fmt::join(CodeBufferRangeRef.subspan(Idx, 4), ""),
+                      fmt::ptr(CachedCode.data()), fmt::ptr(CodeBufferRangeRef.data()), GuestBlockInfo);
+  }
+
+  // Reset Context state for next validation
+  ValidationThread->LookupCache->ClearCache(ValidationThread->LookupCache->AcquireWriteLock());
+  ValidationCTX->LatestOffset = 0;
+
+  LogMan::Msg::IFmt("\tSuccessfully validated cache");
+}
+
 bool CodeCache::ApplyCodeRelocations(uint64_t GuestEntry, std::span<std::byte> Code,
                                     std::span<const FEXCore::CPU::Relocation> EntryRelocations, bool ForStorage) {
  CPU::Arm64Emitter Emitter(&CTX, Code.data(), Code.size_bytes());
@@ -348,8 +638,10 @@ bool CodeCache::ApplyCodeRelocations(uint64_t GuestEntry, std::span<std::byte> C
      if (Pointer == ~0ULL) {
        return false;
      }
-
-      Emitter.LoadConstant(ARMEmitter::Size::i64Bit, ARMEmitter::Register(Reloc.NamedThunkMove.RegisterIndex), Pointer, true);
+      // TODO: Pointers are required to fit within 48-bit VA space.
+      // But forcing 6-byte broke relocations.
+      Emitter.LoadConstant(ARMEmitter::Size::i64Bit, ARMEmitter::Register(Reloc.NamedThunkMove.RegisterIndex), Pointer,
+                           CPU::Arm64Emitter::PadType::DOPAD);
      break;
    }
    case FEXCore::CPU::RelocationTypes::RELOC_GUEST_RIP_LITERAL: {
@@ -358,7 +650,9 @@ bool CodeCache::ApplyCodeRelocations(uint64_t GuestEntry, std::span<std::byte> C
    }
    case FEXCore::CPU::RelocationTypes::RELOC_GUEST_RIP_MOVE: {
      uint64_t Pointer = Reloc.GuestRIP.GuestRIP + GuestEntry;
-      Emitter.LoadConstant(ARMEmitter::Size::i64Bit, ARMEmitter::Register(Reloc.GuestRIP.RegisterIndex), Pointer, true);
+      // TODO: Pointers are required to fit within 48-bit VA space.
+      // But forcing 6-byte broke relocations.
+      Emitter.LoadConstant(ARMEmitter::Size::i64Bit, ARMEmitter::Register(Reloc.GuestRIP.RegisterIndex), Pointer, CPU::Arm64Emitter::PadType::DOPAD);
      break;
    }

@@ -9,6 +9,9 @@ $end_info$
 */

 #include <cstdint>
+#ifdef ZYDIS_DISASSEMBLER
+#include <Zydis/Zydis.h>
+#endif
 #include "Interface/Core/ArchHelpers/Arm64Emitter.h"
 #include "Interface/Core/LookupCache.h"
 #include "Interface/Core/CPUBackend.h"
@@ -345,7 +348,7 @@ bool ContextImpl::InitCore() {
  // Set up the SignalDelegator config since core is initialized.
  SignalDelegation->SetConfig(Dispatcher->MakeSignalDelegatorConfig());

-#if defined(_WIN32) && !defined(_M_ARM_64EC)
+#if defined(_WIN32) && !defined(ARCHITECTURE_arm64ec)
  // WOW64 always needs the interrupt fault check to be enabled.
  Config.NeedsPendingInterruptFaultCheck = true;
 #endif
@@ -363,6 +366,9 @@ void ContextImpl::HandleCallback(FEXCore::Core::InternalThreadState* Thread, uin
 }

 void ContextImpl::ExecuteThread(FEXCore::Core::InternalThreadState* Thread) {
+  // Update the thread pointer for Thunk return to the latest.
+  Thread->CurrentFrame->Pointers.ThunkCallbackRet = SignalDelegation->GetThunkCallbackRET();
+
  Dispatcher->ExecuteDispatch(Thread->CurrentFrame);

  // If it is the parent thread that died then just leave
@@ -379,7 +385,7 @@ void ContextImpl::InitializeCompiler(FEXCore::Core::InternalThreadState* Thread)
  Thread->CurrentFrame->State.L1Pointer = Thread->LookupCache->GetL1Pointer();
  Thread->CurrentFrame->State.L1Mask = Thread->LookupCache->GetScaledL1PointerMask();

-  Thread->CurrentFrame->Pointers.Common.L2Pointer = Thread->LookupCache->GetPagePointer();
+  Thread->CurrentFrame->Pointers.L2Pointer = Thread->LookupCache->GetPagePointer();

  Dispatcher->InitThreadPointers(Thread);

@@ -465,7 +471,7 @@ void ContextImpl::LockBeforeFork(FEXCore::Core::InternalThreadState* Thread) {

 void ContextImpl::OnCodeBufferAllocated(const fextl::shared_ptr<CPU::CodeBuffer>& Buffer) {
  if (Config.GlobalJITNaming()) {
-    Symbols.RegisterJITSpace(Buffer->Ptr, Buffer->Size);
+    Symbols.RegisterJITSpace(Buffer->Ptr, Buffer->AllocatedSize);
  }

  {
@@ -536,9 +542,24 @@ ContextImpl::GenerateIR(FEXCore::Core::InternalThreadState* Thread, uint64_t Gue

    const auto GPRSize = Thread->OpDispatcher->GetGPROpSize();

+#ifdef ZYDIS_DISASSEMBLER
+    const auto ZydisMachineMode = Config.Is64BitMode ? ZYDIS_MACHINE_MODE_LONG_64 : ZYDIS_MACHINE_MODE_LEGACY_32;
+    if (FEXCore::Config::Get_X86DISASSEMBLE()) {
+      const uint64_t DecodedMin = Thread->FrontendDecoder->DecodedMinAddress;
+      const uint64_t DecodedMax = Thread->FrontendDecoder->DecodedMaxAddress;
+      LogMan::Msg::IFmt("Guest x86 Begin (RIP={:#x}, {:#x}-{:#x})", GuestRIP, DecodedMin, DecodedMax);
+    }
+#endif
+
    for (size_t j = 0; j < CodeBlocks->size(); ++j) {
      const FEXCore::Frontend::Decoder::DecodedBlocks& Block = CodeBlocks->at(j);

+#ifdef ZYDIS_DISASSEMBLER
+      if (FEXCore::Config::Get_X86DISASSEMBLE() && CodeBlocks->size() > 1) {
+        LogMan::Msg::IFmt("  Block {} Entry={:#x} NumInsts={}", j, Block.Entry, Block.NumInstructions);
+      }
+#endif
+
      bool BlockInForceTSOValidRange = false;
      auto InstForceTSOIt = ForceTSOInstructions.end();
      if (ForceTSOValidRanges.Contains({Block.Entry, Block.Entry + Block.Size})) {
@@ -570,6 +591,19 @@ ContextImpl::GenerateIR(FEXCore::Core::InternalThreadState* Thread, uint64_t Gue

        TableInfo = Block.DecodedInstructions[i].TableInfo;
        DecodedInfo = &Block.DecodedInstructions[i];
+
+#ifdef ZYDIS_DISASSEMBLER
+        if (FEXCore::Config::Get_X86DISASSEMBLE()) {
+          const uint8_t* InstBytes = reinterpret_cast<const uint8_t*>(InstAddress);
+          ZydisDisassembledInstruction ZydisInst;
+          if (ZYAN_SUCCESS(ZydisDisassembleIntel(ZydisMachineMode, InstAddress, InstBytes, DecodedInfo->InstSize, &ZydisInst))) {
+            LogMan::Msg::IFmt("    {:#x}: {}", InstAddress, ZydisInst.text);
+          } else {
+            LogMan::Msg::IFmt("    {:#x}: (decode failed, {} bytes)", InstAddress, DecodedInfo->InstSize);
+          }
+        }
+#endif
+
        bool IsLocked = DecodedInfo->Flags & FEXCore::X86Tables::DecodeFlags::FLAG_LOCK;

        // Do a partial register cache flush before every instruction. This
@@ -655,7 +689,8 @@ ContextImpl::GenerateIR(FEXCore::Core::InternalThreadState* Thread, uint64_t Gue
              LogMan::Msg::EFmt("Invalid or Unknown instruction: {} 0x{:x}", TableInfo->Name ?: "UND", Block.Entry - GuestRIP);
            }

-            if (Block.BlockStatus == Frontend::Decoder::DecodedBlockStatus::INVALID_INST) {
+            if (Block.BlockStatus == Frontend::Decoder::DecodedBlockStatus::INVALID_INST ||
+                Block.BlockStatus == Frontend::Decoder::DecodedBlockStatus::BAD_RELOCATION) {
              Thread->OpDispatcher->InvalidOp(DecodedInfo);
            } else {
              Thread->OpDispatcher->NoExecOp(DecodedInfo);
@@ -689,6 +724,12 @@ ContextImpl::GenerateIR(FEXCore::Core::InternalThreadState* Thread, uint64_t Gue
      }
    }

+#ifdef ZYDIS_DISASSEMBLER
+    if (FEXCore::Config::Get_X86DISASSEMBLE()) {
+      LogMan::Msg::IFmt("Guest x86 End");
+    }
+#endif
+
    Thread->OpDispatcher->Finalize();

    Thread->FrontendDecoder->DelayedDisownBuffer();
@@ -722,7 +763,7 @@ ContextImpl::GenerateIR(FEXCore::Core::InternalThreadState* Thread, uint64_t Gue

 ContextImpl::CompileCodeResult ContextImpl::CompileCode(FEXCore::Core::InternalThreadState* Thread, uint64_t GuestRIP, uint64_t MaxInst) {
  if (SourcecodeResolver && Config.GDBSymbols()) {
-    auto MappedSection = SyscallHandler->LookupExecutableFileSection(*Thread, GuestRIP);
+    auto MappedSection = SyscallHandler->LookupExecutableFileSection(Thread, GuestRIP);
    if (MappedSection) {
      MappedSection->FileInfo.SourcecodeMap =
        SourcecodeResolver->GenerateMap(MappedSection->FileInfo.Filename, CodeMap::GetBaseFilename(MappedSection->FileInfo, false));
@@ -803,7 +844,7 @@ uintptr_t ContextImpl::CompileBlock(FEXCore::Core::CpuStateFrame* Frame, uint64_
  if (Config.BlockJITNaming()) {
    auto FragmentBasePtr = CompiledCode.BlockBegin;

-    auto GuestRIPLookup = SyscallHandler->LookupExecutableFileSection(*Thread, GuestRIP);
+    auto GuestRIPLookup = SyscallHandler->LookupExecutableFileSection(Thread, GuestRIP);

    if (DebugData->Subblocks.size()) {
      for (auto& Subblock : DebugData->Subblocks) {
@@ -826,7 +867,7 @@ uintptr_t ContextImpl::CompileBlock(FEXCore::Core::CpuStateFrame* Frame, uint64_
  }

  if (Config.LibraryJITNaming() || Config.GDBSymbols()) {
-    auto MappedSection = SyscallHandler->LookupExecutableFileSection(*Thread, GuestRIP);
+    auto MappedSection = SyscallHandler->LookupExecutableFileSection(Thread, GuestRIP);
    if (MappedSection) {
      if (Config.LibraryJITNaming()) {
        Symbols.RegisterNamedRegion(Thread->SymbolBuffer.get(), CodePtr, DebugData->HostCodeSize, MappedSection->FileInfo.Filename);
@@ -865,7 +906,7 @@ uintptr_t ContextImpl::CompileBlock(FEXCore::Core::CpuStateFrame* Frame, uint64_
  }

  if (CodeMapWriter) {
-    auto Region = SyscallHandler->LookupExecutableFileSection(*Thread, GuestRIP);
+    auto Region = SyscallHandler->LookupExecutableFileSection(Thread, GuestRIP);
    if (Region && Region->FileStartVA != 0) {
      CodeMapWriter->AppendBlock(*Region, GuestRIP);
    }
@@ -967,6 +1008,7 @@ void ContextImpl::AddThunkTrampolineIRHandler(uintptr_t Entrypoint, uintptr_t Gu

      const auto GPRSize = this->Config.Is64BitMode ? IR::OpSize::i64Bit : IR::OpSize::i32Bit;

+      // Thunk entry-points don't get cached, don't need to be padded.
      if (GPRSize == IR::OpSize::i64Bit) {
        IR::Ref R = emit->_StoreRegister(emit->Constant(Entrypoint), GPRSize);
        R->Reg = IR::PhysicalRegister(IR::RegClass::GPRFixed, X86State::REG_R11).Raw;
@@ -1037,6 +1079,5 @@ void ContextImpl::MonoBackpatcherWrite(FEXCore::Core::CpuStateFrame* Frame, uint

 void ContextImpl::ConfigureAOTGen(FEXCore::Core::InternalThreadState* Thread, fextl::set<uint64_t>* ExternalBranches, uint64_t SectionMaxAddress) {
  Thread->FrontendDecoder->SetExternalBranches(ExternalBranches);
-  Thread->FrontendDecoder->SetSectionMaxAddress(SectionMaxAddress);
 }
 } // namespace FEXCore::Context
@@ -26,7 +26,6 @@

 #include <array>
 #include <bit>
-#include <csignal>
 #include <cstring>

 namespace FEXCore::CPU {
@@ -96,7 +95,7 @@ void Dispatcher::EmitDispatcher() {

  ARMEmitter::BiDirectionalLabel LoopTop {};

-#ifdef _M_ARM_64EC
+#ifdef ARCHITECTURE_arm64ec
  (void)b(&LoopTop);

  AbsoluteLoopTopAddressEnterECFillSRA = GetCursorAddress<uint64_t>();
@@ -147,7 +146,7 @@ void Dispatcher::EmitDispatcher() {
  // Load in our RIP
  ldr(RipReg, STATE_PTR(CpuStateFrame, State.rip));

-#ifdef _M_ARM_64EC
+#ifdef ARCHITECTURE_arm64ec
  // Clobbers TMP1/2
  // Check the EC code bitmap incase we need to exit the JIT to call into native code.
  ARMEmitter::ForwardLabel l_NotECCode;
@@ -159,13 +158,13 @@ void Dispatcher::EmitDispatcher() {
  ldr(TMP1, TMP1, TMP2, ARMEmitter::ExtendedType::LSL_64, 0);
  lsr(ARMEmitter::Size::i64Bit, TMP2, RipReg, 12);
  lsrv(ARMEmitter::Size::i64Bit, TMP1, TMP1, TMP2);
-  tbz(TMP1, 0, &l_NotECCode);
+  (void)tbz(TMP1, 0, &l_NotECCode);

  str(REG_CALLRET_SP, STATE_PTR(CpuStateFrame, State.callret_sp));

  add(ARMEmitter::Size::i64Bit, ARMEmitter::Reg::rsp, StaticRegisters[X86State::REG_RSP], 0);
  mov(EC_CALL_CHECKER_PC_REG, RipReg);
-  ldr(TMP2, STATE_PTR(CpuStateFrame, Pointers.Common.ExitFunctionEC));
+  ldr(TMP2, STATE_PTR(CpuStateFrame, Pointers.ExitFunctionEC));
  br(TMP2);

  (void)Bind(&l_NotECCode);
@@ -181,7 +180,7 @@ void Dispatcher::EmitDispatcher() {
  } else {
    // This is the block cache lookup routine
    // It matches what is going on it LookupCache.h::FindBlock
-    ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.Common.L2Pointer));
+    ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.L2Pointer));

    // Mask the address by the virtual address size so we can check for aliases
    uint64_t VirtualMemorySize = CTX->Config.VirtualMemSize;
@@ -259,7 +258,7 @@ void Dispatcher::EmitDispatcher() {
    str(TMP2, STATE, offsetof(FEXCore::Core::CPUState, DeferredSignalRefCount));
 #endif

-#ifdef _M_ARM_64EC
+#ifdef ARCHITECTURE_arm64ec
    ldr(TMP2, ARMEmitter::XReg::x18, TEB_CPU_AREA_OFFSET);
    LoadConstant(ARMEmitter::Size::i32Bit, TMP1, 1);
    strb(TMP1.W(), TMP2, CPU_AREA_IN_SYSCALL_CALLBACK_OFFSET);
@@ -267,7 +266,7 @@ void Dispatcher::EmitDispatcher() {

    Body();

-#ifdef _M_ARM_64EC
+#ifdef ARCHITECTURE_arm64ec
    ldr(TMP2, ARMEmitter::XReg::x18, TEB_CPU_AREA_OFFSET);
    strb(ARMEmitter::WReg::zr, TMP2, CPU_AREA_IN_SYSCALL_CALLBACK_OFFSET);
 #endif
@@ -291,7 +290,7 @@ void Dispatcher::EmitDispatcher() {
      mov(ARMEmitter::XReg::x0, STATE);
      mov(ARMEmitter::XReg::x1, ARMEmitter::XReg::lr);

-      ldr(ARMEmitter::XReg::x2, STATE_PTR(CpuStateFrame, Pointers.Common.ExitFunctionLink));
+      ldr(ARMEmitter::XReg::x2, STATE_PTR(CpuStateFrame, Pointers.ExitFunctionLink));
      if (!CTX->Config.DisableVixlIndirectCalls) [[unlikely]] {
        GenerateIndirectRuntimeCall<uintptr_t, void*, void*>(ARMEmitter::Reg::r2);
      } else {
@@ -488,7 +487,7 @@ void Dispatcher::EmitDispatcher() {

    // Now push the callback return trampoline to the guest stack
    // Guest will be misaligned because calling a thunk won't correct the guest's stack once we call the callback from the host
-    LoadConstant(ARMEmitter::Size::i64Bit, ARMEmitter::Reg::r0, CTX->SignalDelegation->GetThunkCallbackRET());
+    ldr(ARMEmitter::XReg::x0, STATE_PTR(CpuStateFrame, Pointers.ThunkCallbackRet));

    ldr(ARMEmitter::XReg::x2, STATE_PTR(CpuStateFrame, State.gregs[X86State::REG_RSP]));
    sub(ARMEmitter::Size::i64Bit, ARMEmitter::Reg::r2, ARMEmitter::Reg::r2, CTX->Config.Is64BitMode ? 16 : 12);
@@ -544,8 +543,8 @@ void Dispatcher::EmitDispatcher() {
    return Address;
  };

-  LUDIVHandlerAddress = EmitLongALUOpHandler(STATE_PTR(CpuStateFrame, Pointers.AArch64.LUDIV));
-  LDIVHandlerAddress = EmitLongALUOpHandler(STATE_PTR(CpuStateFrame, Pointers.AArch64.LDIV));
+  LUDIVHandlerAddress = EmitLongALUOpHandler(STATE_PTR(CpuStateFrame, Pointers.LUDIV));
+  LDIVHandlerAddress = EmitLongALUOpHandler(STATE_PTR(CpuStateFrame, Pointers.LDIV));

  // Interpreter fallbacks
  {
@@ -626,6 +625,226 @@ void Dispatcher::ExecuteJITCallback(FEXCore::Core::CpuStateFrame* Frame, uint64_

 #endif

+void Dispatcher::EmitI32ToExtF80() {
+  ARMEmitter::ForwardLabel ZeroCase;
+  ARMEmitter::ForwardLabel Done;
+
+  (void)cbz(ARMEmitter::Size::i32Bit, TMP2, &ZeroCase);
+
+  lsr(ARMEmitter::Size::i32Bit, TMP4, TMP2, 31);
+  tst(ARMEmitter::Size::i32Bit, TMP2, TMP2);
+  neg(ARMEmitter::Size::i32Bit, TMP3, TMP2);
+  csel(ARMEmitter::Size::i32Bit, TMP3, TMP3, TMP2, ARMEmitter::Condition::CC_MI);
+
+  clz(ARMEmitter::Size::i32Bit, TMP1, TMP3);
+
+  mov(ARMEmitter::Size::i32Bit, TMP2, 0x401E);
+  sub(ARMEmitter::Size::i32Bit, TMP2, TMP2, TMP1);
+  orr(ARMEmitter::Size::i32Bit, TMP2, TMP2, TMP4, ARMEmitter::ShiftType::LSL, 15);
+
+  lslv(ARMEmitter::Size::i32Bit, TMP3, TMP3, TMP1);
+
+  lsl(ARMEmitter::Size::i64Bit, TMP3, TMP3, 32);
+
+  fmov(ARMEmitter::Size::i64Bit, VTMP1.D(), TMP3);
+  ins(ARMEmitter::SubRegSize::i16Bit, VTMP1, 4, TMP2);
+
+  (void)b(&Done);
+
+  (void)Bind(&ZeroCase);
+  movi(ARMEmitter::SubRegSize::i64Bit, VTMP1.Q(), 0);
+
+  (void)Bind(&Done);
+}
+
+void Dispatcher::EmitI16ToExtF80() {
+  sxth(ARMEmitter::Size::i32Bit, TMP2, TMP2);
+
+  ARMEmitter::ForwardLabel ZeroCase;
+  ARMEmitter::ForwardLabel Done;
+
+  (void)cbz(ARMEmitter::Size::i32Bit, TMP2, &ZeroCase);
+
+  lsr(ARMEmitter::Size::i32Bit, TMP4, TMP2, 31);
+  tst(ARMEmitter::Size::i32Bit, TMP2, TMP2);
+  neg(ARMEmitter::Size::i32Bit, TMP3, TMP2);
+  csel(ARMEmitter::Size::i32Bit, TMP3, TMP3, TMP2, ARMEmitter::Condition::CC_MI);
+
+  clz(ARMEmitter::Size::i32Bit, TMP1, TMP3);
+
+  mov(ARMEmitter::Size::i32Bit, TMP2, 0x401E);
+  sub(ARMEmitter::Size::i32Bit, TMP2, TMP2, TMP1);
+  orr(ARMEmitter::Size::i32Bit, TMP2, TMP2, TMP4, ARMEmitter::ShiftType::LSL, 15);
+
+  lslv(ARMEmitter::Size::i32Bit, TMP3, TMP3, TMP1);
+
+  lsl(ARMEmitter::Size::i64Bit, TMP3, TMP3, 32);
+
+  fmov(ARMEmitter::Size::i64Bit, VTMP1.D(), TMP3);
+  ins(ARMEmitter::SubRegSize::i16Bit, VTMP1, 4, TMP2);
+
+  (void)b(&Done);
+
+  (void)Bind(&ZeroCase);
+  movi(ARMEmitter::SubRegSize::i64Bit, VTMP1.Q(), 0);
+
+  (void)Bind(&Done);
+}
+
+void Dispatcher::EmitF32ToExtF80() {
+  ARMEmitter::ForwardLabel InfNaN;
+  ARMEmitter::ForwardLabel ZeroDenormal;
+  ARMEmitter::ForwardLabel Denormal;
+  ARMEmitter::ForwardLabel NaN;
+  ARMEmitter::ForwardLabel Done;
+  ARMEmitter::BiDirectionalLabel NormalPath;
+  ARMEmitter::ForwardLabel ZeroResult;
+
+  fmov(ARMEmitter::Size::i32Bit, TMP1, VTMP1.S());
+
+  ubfx(ARMEmitter::Size::i32Bit, TMP2, TMP1, 23, 8);
+  and_(ARMEmitter::Size::i32Bit, TMP3, TMP1, 0x007FFFFF);
+  lsr(ARMEmitter::Size::i32Bit, TMP4, TMP1, 31);
+
+  cmp(ARMEmitter::Size::i32Bit, TMP2, 0xFF);
+  (void)b(ARMEmitter::Condition::CC_EQ, &InfNaN);
+
+  (void)cbz(ARMEmitter::Size::i32Bit, TMP2, &ZeroDenormal);
+
+  (void)Bind(&NormalPath);
+  // Exponent bias adjustment, where bias is 0x3F80
+  LoadConstant(ARMEmitter::Size::i32Bit, TMP1, 0x3F80);
+  add(ARMEmitter::Size::i32Bit, TMP2, TMP2, TMP1);
+  orr(ARMEmitter::Size::i32Bit, TMP2, TMP2, TMP4, ARMEmitter::ShiftType::LSL, 15);
+
+  // Set implicit bit and shift fraction to extF80 position
+  LoadConstant(ARMEmitter::Size::i64Bit, TMP1, 0x00800000ULL);
+  orr(ARMEmitter::Size::i64Bit, TMP3, TMP3, TMP1);
+  lsl(ARMEmitter::Size::i64Bit, TMP3, TMP3, 40);
+
+  fmov(ARMEmitter::Size::i64Bit, VTMP1.D(), TMP3);
+  ins(ARMEmitter::SubRegSize::i16Bit, VTMP1, 4, TMP2);
+  (void)b(&Done);
+
+  (void)Bind(&ZeroDenormal);
+  (void)cbz(ARMEmitter::Size::i32Bit, TMP3, &ZeroResult);
+
+  (void)Bind(&Denormal);
+  clz(ARMEmitter::Size::i32Bit, TMP1, TMP3);
+  sub(ARMEmitter::Size::i32Bit, TMP1, TMP1, 8);
+  mov(ARMEmitter::Size::i32Bit, TMP2, 1);
+  sub(ARMEmitter::Size::i32Bit, TMP2, TMP2, TMP1);
+  lslv(ARMEmitter::Size::i32Bit, TMP3, TMP3, TMP1);
+  (void)b(&NormalPath);
+
+  (void)Bind(&ZeroResult);
+  lsl(ARMEmitter::Size::i32Bit, TMP2, TMP4, 15);
+  movi(ARMEmitter::SubRegSize::i64Bit, VTMP1.Q(), 0);
+  ins(ARMEmitter::SubRegSize::i16Bit, VTMP1, 4, TMP2);
+  (void)b(&Done);
+
+  (void)Bind(&InfNaN);
+  (void)cbnz(ARMEmitter::Size::i32Bit, TMP3, &NaN);
+
+  lsl(ARMEmitter::Size::i32Bit, TMP2, TMP4, 15);
+  orr(ARMEmitter::Size::i32Bit, TMP2, TMP2, 0x7FFF);
+
+  LoadConstant(ARMEmitter::Size::i64Bit, TMP3, 0x8000000000000000ULL);
+  fmov(ARMEmitter::Size::i64Bit, VTMP1.D(), TMP3);
+  ins(ARMEmitter::SubRegSize::i16Bit, VTMP1, 4, TMP2);
+  (void)b(&Done);
+
+  (void)Bind(&NaN);
+  lsl(ARMEmitter::Size::i32Bit, TMP2, TMP4, 15);
+  orr(ARMEmitter::Size::i32Bit, TMP2, TMP2, 0x7FFF);
+
+  lsl(ARMEmitter::Size::i64Bit, TMP3, TMP3, 40);
+  LoadConstant(ARMEmitter::Size::i64Bit, TMP1, 0xC000000000000000ULL);
+  orr(ARMEmitter::Size::i64Bit, TMP3, TMP3, TMP1);
+
+  fmov(ARMEmitter::Size::i64Bit, VTMP1.D(), TMP3);
+  ins(ARMEmitter::SubRegSize::i16Bit, VTMP1, 4, TMP2);
+
+  (void)Bind(&Done);
+}
+
+void Dispatcher::EmitF64ToExtF80() {
+  ARMEmitter::ForwardLabel InfNaN;
+  ARMEmitter::ForwardLabel ZeroDenormal;
+  ARMEmitter::ForwardLabel Denormal;
+  ARMEmitter::ForwardLabel NaN;
+  ARMEmitter::ForwardLabel Done;
+  ARMEmitter::BiDirectionalLabel NormalPath;
+  ARMEmitter::ForwardLabel ZeroResult;
+
+  fmov(ARMEmitter::Size::i64Bit, TMP1, VTMP1.D());
+
+  lsr(ARMEmitter::Size::i64Bit, TMP4, TMP1, 63);
+  ubfx(ARMEmitter::Size::i64Bit, TMP2, TMP1, 52, 11);
+  LoadConstant(ARMEmitter::Size::i64Bit, TMP3, 0x000FFFFFFFFFFFFFULL);
+  and_(ARMEmitter::Size::i64Bit, TMP3, TMP1, TMP3);
+
+  cmp(ARMEmitter::Size::i64Bit, TMP2, 0x7FF);
+  (void)b(ARMEmitter::Condition::CC_EQ, &InfNaN);
+
+  (void)cbz(ARMEmitter::Size::i64Bit, TMP2, &ZeroDenormal);
+
+  (void)Bind(&NormalPath);
+  // Exponent bias adjustment where bias difference is 0x3C00
+  add(ARMEmitter::Size::i64Bit, TMP2, TMP2, 0x3000);
+  add(ARMEmitter::Size::i64Bit, TMP2, TMP2, 0xC00);
+  orr(ARMEmitter::Size::i64Bit, TMP2, TMP2, TMP4, ARMEmitter::ShiftType::LSL, 15);
+
+  LoadConstant(ARMEmitter::Size::i64Bit, TMP1, 0x0010000000000000ULL);
+  orr(ARMEmitter::Size::i64Bit, TMP3, TMP3, TMP1);
+  lsl(ARMEmitter::Size::i64Bit, TMP3, TMP3, 11);
+
+  fmov(ARMEmitter::Size::i64Bit, VTMP1.D(), TMP3);
+  ins(ARMEmitter::SubRegSize::i16Bit, VTMP1, 4, TMP2);
+  (void)b(&Done);
+
+  (void)Bind(&ZeroDenormal);
+  (void)cbz(ARMEmitter::Size::i64Bit, TMP3, &ZeroResult);
+
+  (void)Bind(&Denormal);
+  clz(ARMEmitter::Size::i64Bit, TMP1, TMP3);
+  sub(ARMEmitter::Size::i64Bit, TMP1, TMP1, 11);
+  mov(ARMEmitter::Size::i64Bit, TMP2, 1);
+  sub(ARMEmitter::Size::i64Bit, TMP2, TMP2, TMP1);
+  lslv(ARMEmitter::Size::i64Bit, TMP3, TMP3, TMP1);
+  (void)b(&NormalPath);
+
+  (void)Bind(&ZeroResult);
+  lsl(ARMEmitter::Size::i64Bit, TMP2, TMP4, 15);
+  movi(ARMEmitter::SubRegSize::i64Bit, VTMP1.Q(), 0);
+  ins(ARMEmitter::SubRegSize::i16Bit, VTMP1, 4, TMP2);
+  (void)b(&Done);
+
+  (void)Bind(&InfNaN);
+  (void)cbnz(ARMEmitter::Size::i64Bit, TMP3, &NaN);
+
+  lsl(ARMEmitter::Size::i64Bit, TMP2, TMP4, 15);
+  orr(ARMEmitter::Size::i64Bit, TMP2, TMP2, 0x7FFF);
+
+  LoadConstant(ARMEmitter::Size::i64Bit, TMP3, 0x8000000000000000ULL);
+  fmov(ARMEmitter::Size::i64Bit, VTMP1.D(), TMP3);
+  ins(ARMEmitter::SubRegSize::i16Bit, VTMP1, 4, TMP2);
+  (void)b(&Done);
+
+  (void)Bind(&NaN);
+  lsl(ARMEmitter::Size::i64Bit, TMP2, TMP4, 15);
+  orr(ARMEmitter::Size::i64Bit, TMP2, TMP2, 0x7FFF);
+
+  lsl(ARMEmitter::Size::i64Bit, TMP3, TMP3, 11);
+  LoadConstant(ARMEmitter::Size::i64Bit, TMP1, 0xC000000000000000ULL);
+  orr(ARMEmitter::Size::i64Bit, TMP3, TMP3, TMP1);
+
+  fmov(ARMEmitter::Size::i64Bit, VTMP1.D(), TMP3);
+  ins(ARMEmitter::SubRegSize::i16Bit, VTMP1, 4, TMP2);
+
+  (void)Bind(&Done);
+}
+
 uint64_t Dispatcher::GenerateABICall(FallbackABI ABI) {
  auto Address = GetCursorAddress<uint64_t>();
  constexpr static auto FallbackPointerReg = TMP4;
@@ -696,65 +915,33 @@ uint64_t Dispatcher::GenerateABICall(FallbackABI ABI) {

  switch (ABI) {
  case FABI_F80_I16_F32_PTR: {
-    // Linux Reg/Win32 Reg:
-    // tmp4 (x4/x13): FallbackHandler
-    // x30: return
-    // vtmp1 (v0/v16): source
-    SpillForABICall(CTX->HostFeatures.SupportsPreserveAllABI, TMP3, true);
-
-    if (!TMP_ABIARGS) {
-      fmov(VABI1.S(), VTMP1.S());
-    }
-    ldrh(ARMEmitter::WReg::w0, STATE, offsetof(FEXCore::Core::CPUState, FCW));
-    mov(ARMEmitter::XReg::x1, STATE);
-    if (!CTX->Config.DisableVixlIndirectCalls) [[unlikely]] {
-      GenerateIndirectRuntimeCall<FEXCore::VectorRegType, uint16_t, float, uint64_t>(FallbackPointerReg);
-    } else {
-      blr(FallbackPointerReg);
-    }
-
-    FillF80Result();
+    // Save NZCV - it's a static register (guest x86 flags) and the inline code clobbers it
+    mrs(TMP1, ARMEmitter::SystemRegister::NZCV);
+    str(TMP1.W(), STATE.R(), offsetof(FEXCore::Core::CpuStateFrame, State.flags[24]));
+    EmitF32ToExtF80();
+    ldr(TMP1.W(), STATE.R(), offsetof(FEXCore::Core::CpuStateFrame, State.flags[24]));
+    msr(ARMEmitter::SystemRegister::NZCV, TMP1);
  } break;
  case FABI_F80_I16_F64_PTR: {
-    // Linux Reg/Win32 Reg:
-    // tmp4 (x4/x13): FallbackHandler
-    // x30: return
-    // vtmp1 (v0/v16): source
-    SpillForABICall(CTX->HostFeatures.SupportsPreserveAllABI, TMP3, true);
-
-    if (!TMP_ABIARGS) {
-      fmov(VABI1.D(), VTMP1.D());
-    }
-    ldrh(ARMEmitter::WReg::w0, STATE, offsetof(FEXCore::Core::CPUState, FCW));
-    mov(ARMEmitter::XReg::x1, STATE);
-    if (!CTX->Config.DisableVixlIndirectCalls) [[unlikely]] {
-      GenerateIndirectRuntimeCall<FEXCore::VectorRegType, uint16_t, double, uint64_t>(FallbackPointerReg);
-    } else {
-      blr(FallbackPointerReg);
-    }
-
-    FillF80Result();
+    mrs(TMP1, ARMEmitter::SystemRegister::NZCV);
+    str(TMP1.W(), STATE.R(), offsetof(FEXCore::Core::CpuStateFrame, State.flags[24]));
+    EmitF64ToExtF80();
+    ldr(TMP1.W(), STATE.R(), offsetof(FEXCore::Core::CpuStateFrame, State.flags[24]));
+    msr(ARMEmitter::SystemRegister::NZCV, TMP1);
+  } break;
+  case FABI_F80_I16_I16_PTR: {
+    mrs(TMP1, ARMEmitter::SystemRegister::NZCV);
+    str(TMP1.W(), STATE.R(), offsetof(FEXCore::Core::CpuStateFrame, State.flags[24]));
+    EmitI16ToExtF80();
+    ldr(TMP1.W(), STATE.R(), offsetof(FEXCore::Core::CpuStateFrame, State.flags[24]));
+    msr(ARMEmitter::SystemRegister::NZCV, TMP1);
  } break;
-  case FABI_F80_I16_I16_PTR:
  case FABI_F80_I16_I32_PTR: {
-    // Linux Reg/Win32 Reg:
-    // tmp4 (x4/x13): FallbackHandler
-    // x30: return
-    // tmp2 (x1/x11): source
-    SpillForABICall(CTX->HostFeatures.SupportsPreserveAllABI, TMP3, true);
-
-    if (!TMP_ABIARGS) {
-      mov(ARMEmitter::Size::i64Bit, ARMEmitter::Reg::r1, TMP2);
-    }
-    ldrh(ARMEmitter::WReg::w0, STATE, offsetof(FEXCore::Core::CPUState, FCW));
-    mov(ARMEmitter::XReg::x2, STATE);
-    if (!CTX->Config.DisableVixlIndirectCalls) [[unlikely]] {
-      GenerateIndirectRuntimeCall<FEXCore::VectorRegType, uint16_t, uint32_t, uint64_t>(FallbackPointerReg);
-    } else {
-      blr(FallbackPointerReg);
-    }
-
-    FillF80Result();
+    mrs(TMP1, ARMEmitter::SystemRegister::NZCV);
+    str(TMP1.W(), STATE.R(), offsetof(FEXCore::Core::CpuStateFrame, State.flags[24]));
+    EmitI32ToExtF80();
+    ldr(TMP1.W(), STATE.R(), offsetof(FEXCore::Core::CpuStateFrame, State.flags[24]));
+    msr(ARMEmitter::SystemRegister::NZCV, TMP1);
  } break;
  case FABI_F32_I16_F80_PTR: {
    // Linux Reg/Win32 Reg:
@@ -1086,27 +1273,25 @@ uint64_t Dispatcher::GenerateABICall(FallbackABI ABI) {
 void Dispatcher::InitThreadPointers(FEXCore::Core::InternalThreadState* Thread) {
  // Setup dispatcher specific pointers that need to be accessed from JIT code
  {
-    auto& Common = Thread->CurrentFrame->Pointers.Common;
+    auto& Ptrs = Thread->CurrentFrame->Pointers;

-    Common.DispatcherLoopTop = AbsoluteLoopTopAddress;
-    Common.DispatcherLoopTopFillSRA = AbsoluteLoopTopAddressFillSRA;
-    Common.DispatcherLoopTopEnterEC = AbsoluteLoopTopAddressEnterEC;
-    Common.DispatcherLoopTopEnterECFillSRA = AbsoluteLoopTopAddressEnterECFillSRA;
-    Common.ExitFunctionLinker = ExitFunctionLinkerAddress;
-    Common.ThreadStopHandlerSpillSRA = ThreadStopHandlerAddressSpillSRA;
-    Common.ThreadPauseHandlerSpillSRA = ThreadPauseHandlerAddressSpillSRA;
-    Common.GuestSignal_SIGILL = GuestSignal_SIGILL;
-    Common.GuestSignal_SIGTRAP = GuestSignal_SIGTRAP;
-    Common.GuestSignal_SIGSEGV = GuestSignal_SIGSEGV;
-    Common.SignalReturnHandler = SignalHandlerReturnAddress;
-    Common.SignalReturnHandlerRT = SignalHandlerReturnAddressRT;
-
-    auto& AArch64 = Thread->CurrentFrame->Pointers.AArch64;
-    AArch64.LUDIVHandler = LUDIVHandlerAddress;
-    AArch64.LDIVHandler = LDIVHandlerAddress;
+    Ptrs.DispatcherLoopTop = AbsoluteLoopTopAddress;
+    Ptrs.DispatcherLoopTopFillSRA = AbsoluteLoopTopAddressFillSRA;
+    Ptrs.DispatcherLoopTopEnterEC = AbsoluteLoopTopAddressEnterEC;
+    Ptrs.DispatcherLoopTopEnterECFillSRA = AbsoluteLoopTopAddressEnterECFillSRA;
+    Ptrs.ExitFunctionLinker = ExitFunctionLinkerAddress;
+    Ptrs.ThreadStopHandlerSpillSRA = ThreadStopHandlerAddressSpillSRA;
+    Ptrs.ThreadPauseHandlerSpillSRA = ThreadPauseHandlerAddressSpillSRA;
+    Ptrs.GuestSignal_SIGILL = GuestSignal_SIGILL;
+    Ptrs.GuestSignal_SIGTRAP = GuestSignal_SIGTRAP;
+    Ptrs.GuestSignal_SIGSEGV = GuestSignal_SIGSEGV;
+    Ptrs.SignalReturnHandler = SignalHandlerReturnAddress;
+    Ptrs.SignalReturnHandlerRT = SignalHandlerReturnAddressRT;
+    Ptrs.LUDIVHandler = LUDIVHandlerAddress;
+    Ptrs.LDIVHandler = LDIVHandlerAddress;

    // Fill in the fallback handlers
-    InterpreterOps::FillFallbackIndexPointers(Common.FallbackHandlerPointers, &ABIPointers[0]);
+    InterpreterOps::FillFallbackIndexPointers(Ptrs.FallbackHandlerPointers, &ABIPointers[0]);
  }
 }

@@ -98,6 +98,13 @@ private:
  void EmitDispatcher();
  uint64_t GenerateABICall(FallbackABI ABI);

+  // Inline softfloat conversion emitters - avoid FPCR save/restore overhead
+  // These emit ARM64 code that performs the conversion using only integer ops
+  void EmitI16ToExtF80();
+  void EmitI32ToExtF80();
+  void EmitF32ToExtF80();
+  void EmitF64ToExtF80();
+
  FEX_CONFIG_OPT(DisableL2Cache, DISABLEL2CACHE);
 };

@@ -132,7 +132,7 @@ std::optional<uint8_t> Decoder::PeekByte(uint8_t Offset) {
  }
 }

-uint64_t Decoder::ReadData(uint8_t Size) {
+std::pair<uint64_t, bool> Decoder::ReadData(uint8_t Size) {
  LOGMAN_THROW_A_FMT(Size != 0 && Size <= sizeof(uint64_t), "Unknown data size to read");

  uint64_t Res = 0;
@@ -154,7 +154,21 @@ uint64_t Decoder::ReadData(uint8_t Size) {
  SkipBytes(Size);
 #endif

-  return Res;
+  if (Relocations) {
+    uint32_t SectionOffset = static_cast<uint32_t>(Address - SectionMinAddress);
+    if (auto It = Relocations->find(SectionOffset); It != Relocations->end()) {
+      if (It->second == GuestRelocationType::Rel32 && Size == 4) {
+        return {static_cast<int64_t>(static_cast<int32_t>(Res) - static_cast<int32_t>(EntryPoint)), true};
+      } else if (It->second == GuestRelocationType::Rel64 && Size == 8) {
+        return {static_cast<int64_t>(Res) - static_cast<int64_t>(EntryPoint), true};
+      } else {
+        HitBadRelocation = true;
+        Res = 0;
+      }
+    }
+  }
+
+  return {Res, false};
 }

 void Decoder::DecodeModRM_16(X86Tables::DecodedOperand* Operand, X86Tables::ModRMDecoded ModRM) {
@@ -186,7 +200,9 @@ void Decoder::DecodeModRM_16(X86Tables::DecodedOperand* Operand, X86Tables::ModR
    DisplacementSize = 1;
  }
  if (DisplacementSize) {
-    Literal = ReadData(DisplacementSize);
+    bool IsRelocation = false;
+    std::tie(Literal, IsRelocation) = ReadData(DisplacementSize);
+    LOGMAN_THROW_A_FMT(!IsRelocation, "1/2 byte relocations unsupported");
    if (DisplacementSize == 1) {
      Literal = static_cast<int8_t>(Literal);
    }
@@ -292,7 +308,10 @@ void Decoder::DecodeModRM_64(X86Tables::DecodedOperand* Operand, X86Tables::ModR
    LOGMAN_THROW_A_FMT(Displacement <= 4, "Number of bytes should be <= 4 for literal src");

    if (Displacement) {
-      uint64_t Literal = ReadData(Displacement);
+      auto [Literal, IsRelocation] = ReadData(Displacement);
+      if (IsRelocation) {
+        Operand->Type = DecodedOperand::OpType::SIBRelocation;
+      }
      if (Displacement == 1) {
        Literal = static_cast<int8_t>(Literal);
      }
@@ -302,10 +321,9 @@ void Decoder::DecodeModRM_64(X86Tables::DecodedOperand* Operand, X86Tables::ModR
    // Explained in Table 1-14. "Operand Addressing Using ModRM and SIB Bytes"
    if (ModRM.rm == 0b101) {
      // 32bit Displacement
-      const uint32_t Literal = ReadData(4);
-
-      Operand->Type = DecodedOperand::OpType::RIPRelative;
-      Operand->Data.RIPLiteral.Value.u = Literal;
+      auto [Literal, IsRelocation] = ReadData(4);
+      Operand->Type = IsRelocation ? DecodedOperand::OpType::RIPRelativeRelocation : DecodedOperand::OpType::RIPRelative;
+      Operand->Data.RIPLiteral.Value = Literal;
    } else {
      // Register-direct addressing
      Operand->Type = DecodedOperand::OpType::GPRDirect;
@@ -313,12 +331,12 @@ void Decoder::DecodeModRM_64(X86Tables::DecodedOperand* Operand, X86Tables::ModR
    }
  } else {
    uint8_t DisplacementSize = ModRM.mod == 1 ? 1 : 4;
-    uint32_t Literal = ReadData(DisplacementSize);
+    auto [Literal, IsRelocation] = ReadData(DisplacementSize);
    if (DisplacementSize == 1) {
      Literal = static_cast<int8_t>(Literal);
    }

-    Operand->Type = DecodedOperand::OpType::GPRIndirect;
+    Operand->Type = IsRelocation ? DecodedOperand::OpType::GPRIndirectRelocation : DecodedOperand::OpType::GPRIndirect;
    Operand->Data.GPRIndirect.GPR = MapModRMToReg(DecodeInst->Flags & DecodeFlags::FLAG_REX_XGPR_B ? 1 : 0, ModRM.rm, false, false, false, false);
    Operand->Data.GPRIndirect.Displacement = Literal;
  }
@@ -614,31 +632,29 @@ bool Decoder::NormalOp(const FEXCore::X86Tables::X86InstInfo* Info, uint16_t Op,
  if (Bytes != 0) {
    LOGMAN_THROW_A_FMT(Bytes <= 8, "Number of bytes should be <= 8 for literal src");

-    DecodeInst->Src[CurrentSrc].Data.Literal.Size = Bytes;

-    uint64_t Literal = ReadData(Bytes);
+    auto [Literal, IsRelocation] = ReadData(Bytes);
+    if (IsRelocation) {
+      DecodeInst->Src[CurrentSrc].Type = DecodedOperand::OpType::LiteralRelocation;
+      DecodeInst->Src[CurrentSrc].Data.LiteralRelocation.EntrypointOffset = Literal;
+    } else {
+      DecodeInst->Src[CurrentSrc].Data.Literal.Size = Bytes;

-    if ((Info->Flags & FEXCore::X86Tables::InstFlags::FLAGS_SRC_SEXT) || (DecodeFlags::GetSizeDstFlags(DecodeInst->Flags) == DecodeFlags::SIZE_64BIT &&
-                                                                          Info->Flags & FEXCore::X86Tables::InstFlags::FLAGS_SRC_SEXT64BIT)) {
-      if (Bytes == 1) {
-        Literal = static_cast<int8_t>(Literal);
-      } else if (Bytes == 2) {
-        Literal = static_cast<int16_t>(Literal);
-      } else {
-        Literal = static_cast<int32_t>(Literal);
+      if ((Info->Flags & FEXCore::X86Tables::InstFlags::FLAGS_SRC_SEXT) ||
+          (DecodeFlags::GetSizeDstFlags(DecodeInst->Flags) == DecodeFlags::SIZE_64BIT &&
+           Info->Flags & FEXCore::X86Tables::InstFlags::FLAGS_SRC_SEXT64BIT)) {
+        if (Bytes == 1) {
+          Literal = static_cast<int8_t>(Literal);
+        } else if (Bytes == 2) {
+          Literal = static_cast<int16_t>(Literal);
+        } else {
+          Literal = static_cast<int32_t>(Literal);
+        }
+        DecodeInst->Src[CurrentSrc].Data.Literal.Size = DestSize;
      }
-      DecodeInst->Src[CurrentSrc].Data.Literal.Size = DestSize;
-      DecodeInst->Src[CurrentSrc].Data.Literal.SignExtend = true;
-    }

-    DecodeInst->Src[CurrentSrc].Type = DecodedOperand::OpType::Literal;
-    DecodeInst->Src[CurrentSrc].Data.Literal.Value = Literal;
-    ++CurrentSrc;
-
-    if (Bytes == 8) [[unlikely]] {
-      DecodeInst->Src[CurrentSrc].Data.Literal.Size = 4;
      DecodeInst->Src[CurrentSrc].Type = DecodedOperand::OpType::Literal;
-      DecodeInst->Src[CurrentSrc].Data.Literal.Value = Literal >> 32;
+      DecodeInst->Src[CurrentSrc].Data.Literal.Value = Literal;
    }

    Bytes = 0;
@@ -753,13 +769,23 @@ bool Decoder::NormalOpHeader(const FEXCore::X86Tables::X86InstInfo* Info, uint16

    if (Op == 0xC5) { // Two byte VEX
      pp = Byte1 & 0b11;
-      options.vvvv = 15 - ((Byte1 & 0b01111000) >> 3);
+      const uint8_t vvvv = ((Byte1 & 0b01111000) >> 3);
+      if (!BlockInfo.Is64BitMode && vvvv <= 0b0111) {
+        // Invalid on 32-bit, can't use the high registers.
+        return false;
+      }
+      options.vvvv = 15 - vvvv;
      options.L = (Byte1 & 0b100) != 0;
    } else { // 0xC4 = Three byte VEX
      const uint8_t Byte2 = ReadByte();
      pp = Byte2 & 0b11;
      map_select = Byte1 & 0b11111;
-      options.vvvv = 15 - ((Byte2 & 0b01111000) >> 3);
+      const uint8_t vvvv = ((Byte2 & 0b01111000) >> 3);
+      if (!BlockInfo.Is64BitMode && vvvv <= 0b0111) {
+        // Invalid on 32-bit, can't use the high registers.
+        return false;
+      }
+      options.vvvv = 15 - vvvv;
      options.w = (Byte2 & 0b10000000) != 0;
      options.L = (Byte2 & 0b100) != 0;
      if ((Byte1 & 0b01000000) == 0) {
@@ -832,6 +858,7 @@ bool Decoder::DecodeInstructionImpl(uint64_t PC) {
      switch (EscapeOp) {
      case 0x0F:
        [[unlikely]] { // 3DNow!
+          DecodeREXIfValid(-2);
          // 3DNow! Instruction Encoding: 0F 0F [ModRM] [SIB] [Displacement] [Opcode]
          // Decode ModRM
          uint8_t ModRMByte = ReadByte();
@@ -856,6 +883,7 @@ bool Decoder::DecodeInstructionImpl(uint64_t PC) {
          break;
        }
      case 0x38: { // F38 Table!
+        DecodeREXIfValid(-2);
        constexpr uint16_t PF_38_NONE = 0;
        constexpr uint16_t PF_38_66 = (1U << 0);
        constexpr uint16_t PF_38_F2 = (1U << 1);
@@ -881,11 +909,11 @@ bool Decoder::DecodeInstructionImpl(uint64_t PC) {
          DecodeInst->Flags &= ~DecodeFlags::FLAG_OPERAND_SIZE;
          DecodeFlags::PopOpAddrIf(&DecodeInst->Flags, DecodeFlags::FLAG_OPERAND_SIZE_LAST);
        }
-
        return NormalOpHeader(&FEXCore::X86Tables::H0F38TableOps[LocalOp], LocalOp);
        break;
      }
      case 0x3A: { // F3A Table!
+        DecodeREXIfValid(-2);
        constexpr uint16_t PF_3A_NONE = 0;
        constexpr uint16_t PF_3A_66 = (1 << 0);
        constexpr uint16_t PF_3A_REX = (1 << 1);
@@ -915,6 +943,7 @@ bool Decoder::DecodeInstructionImpl(uint64_t PC) {
          bool NoOverlay = (FEXCore::X86Tables::SecondBaseOps[EscapeOp].Flags & InstFlags::FLAGS_NO_OVERLAY) != 0;
          bool NoOverlay66 = (FEXCore::X86Tables::SecondBaseOps[EscapeOp].Flags & InstFlags::FLAGS_NO_OVERLAY66) != 0;

+          DecodeREXIfValid(-2);
          if (NoOverlay) { // This section of the table ignores prefix extention
            return NormalOpHeader(&FEXCore::X86Tables::SecondBaseOps[EscapeOp], EscapeOp);
          } else if (LastEscapePrefix == 0xF3) { // REP
@@ -994,29 +1023,9 @@ bool Decoder::DecodeInstructionImpl(uint64_t PC) {
        }

        if (Info->Type == FEXCore::X86Tables::TYPE_REX_PREFIX) {
-          DecodeInst->Flags |= DecodeFlags::FLAG_REX_PREFIX;
-
-          // Widening displacement
-          if (Op & 0b1000) {
-            DecodeInst->Flags |= DecodeFlags::FLAG_REX_WIDENING;
-            DecodeFlags::PushOpAddr(&DecodeInst->Flags, DecodeFlags::FLAG_WIDENING_SIZE_LAST);
-          }
-
-          // XGPR_B bit set
-          if (Op & 0b0001) {
-            DecodeInst->Flags |= DecodeFlags::FLAG_REX_XGPR_B;
-          }
-
-          // XGPR_X bit set
-          if (Op & 0b0010) {
-            DecodeInst->Flags |= DecodeFlags::FLAG_REX_XGPR_X;
-          }
-
-          // XGPR_R bit set
-          if (Op & 0b0100) {
-            DecodeInst->Flags |= DecodeFlags::FLAG_REX_XGPR_R;
-          }
+          DecodeInst->REXIndex = InstructionSize;
        } else {
+          DecodeREXIfValid();
          return NormalOpHeader(Info, Op);
        }

@@ -1032,18 +1041,51 @@ bool Decoder::DecodeInstructionImpl(uint64_t PC) {
  return true;
 }

+void Decoder::DecodeREXIfValid(int8_t ExpectedOffset) {
+  LOGMAN_THROW_A_FMT(ExpectedOffset < 0, "Expecting an negative offset for the REX offset!");
+  const int8_t REXIndex = InstructionSize + ExpectedOffset;
+
+  if (DecodeInst->REXIndex != 0 && DecodeInst->REXIndex == REXIndex) {
+    const uint8_t Op = Instruction[REXIndex - 1];
+    DecodeInst->Flags |= DecodeFlags::FLAG_REX_PREFIX;
+
+    // Widening displacement
+    if (Op & 0b1000) {
+      DecodeInst->Flags |= DecodeFlags::FLAG_REX_WIDENING;
+      DecodeFlags::PushOpAddr(&DecodeInst->Flags, DecodeFlags::FLAG_WIDENING_SIZE_LAST);
+    }
+
+    // XGPR_B bit set
+    if (Op & 0b0001) {
+      DecodeInst->Flags |= DecodeFlags::FLAG_REX_XGPR_B;
+    }
+
+    // XGPR_X bit set
+    if (Op & 0b0010) {
+      DecodeInst->Flags |= DecodeFlags::FLAG_REX_XGPR_X;
+    }
+
+    // XGPR_R bit set
+    if (Op & 0b0100) {
+      DecodeInst->Flags |= DecodeFlags::FLAG_REX_XGPR_R;
+    }
+  }
+}
+
 Decoder::DecodedBlockStatus Decoder::DecodeInstruction(uint64_t PC) {
  // Will be set if DecodeInstructionImpl tries to read non-executable memory
  HitNonExecutableRange = false;
+  HitBadRelocation = false;
  bool ErrorDuringDecoding = !DecodeInstructionImpl(PC);

-  if (ErrorDuringDecoding || HitNonExecutableRange) [[unlikely]] {
+  if (ErrorDuringDecoding || HitNonExecutableRange || HitBadRelocation) [[unlikely]] {
    // Put an invalid instruction in the stream so the core can raise SIGILL if hit
    // Error while decoding instruction. We don't know the table or instruction size
    DecodeInst->TableInfo = nullptr;
-    auto Result = ErrorDuringDecoding  ? DecodedBlockStatus::INVALID_INST :
-                  DecodeInst->InstSize ? DecodedBlockStatus::PARTIAL_DECODE_INST :
-                                         DecodedBlockStatus::NOEXEC_INST;
+    auto Result = ErrorDuringDecoding   ? DecodedBlockStatus::INVALID_INST :
+                  DecodeInst->InstSize  ? DecodedBlockStatus::PARTIAL_DECODE_INST :
+                  HitNonExecutableRange ? DecodedBlockStatus::NOEXEC_INST :
+                                          DecodedBlockStatus::BAD_RELOCATION;
    DecodeInst->InstSize = 0;
    return Result;
  } else if (!DecodeInst->TableInfo || (DecodeInst->TableInfo->Type == TYPE_INST && !DecodeInst->TableInfo->OpcodeDispatcher.OpDispatch)) {
@@ -1129,9 +1171,9 @@ void Decoder::BranchTargetInMultiblockRange() {
  // Forbid distant branches to have the cost code better match the guest code layout, avoiding massive (range-wise) code
  // blocks in highly fragmented guest code. Such branches are often not-taken branches to garbage in obfuscated code.
  constexpr uint64_t MAX_FORWARD_BRANCH_DIST = FEXCore::Utils::FEX_PAGE_SIZE * 4;
-  bool ValidMultiblockMember = TargetRIP >= SymbolMinAddress && TargetRIP < std::min(InstEnd + MAX_FORWARD_BRANCH_DIST, SymbolMaxAddress);
+  bool ValidMultiblockMember = TargetRIP >= EntryPoint && TargetRIP < std::min(InstEnd + MAX_FORWARD_BRANCH_DIST, SectionMaxAddress);

-#ifdef _M_ARM_64EC
+#ifdef ARCHITECTURE_arm64ec
  ValidMultiblockMember = ValidMultiblockMember && !RtlIsEcCode(TargetRIP);
 #endif

@@ -1322,19 +1364,23 @@ void Decoder::DecodeInstructionsAtEntry(FEXCore::Core::InternalThreadState* Thre
  BlockInfo.Is64BitMode = CSSegment->L == 1;
  LOGMAN_THROW_A_FMT(BlockInfo.Is64BitMode == CTX->Config.Is64BitMode, "Expected operating mode to not change at runtime!");

-  // XXX: Load symbol data
-  SymbolAvailable = false;
  EntryPoint = PC;
  BlockInfo.EntryPoints = {PC};
  InstStream = _InstStream;

  uint64_t TotalInstructions {};

-  // If we don't have symbols available then we become a bit optimistic about multiblock ranges
-  if (!SymbolAvailable) {
-    // If we don't have a symbol available then assume all branches are valid for multiblock
-    SymbolMaxAddress = SectionMaxAddress;
-    SymbolMinAddress = EntryPoint;
+  SectionMinAddress = 0;
+  SectionMaxAddress = ~0ULL;
+  Relocations = nullptr;
+
+  if (CTX->GetCodeCache().IsGeneratingCache || EnableCodeCacheValidation) {
+    // If generating cache, attempt to load section bounds and relocations
+    if (auto SectionInfo = CTX->SyscallHandler->LookupExecutableFileSection(Thread, EntryPoint)) {
+      SectionMinAddress = SectionInfo->FileStartVA;
+      SectionMaxAddress = SectionInfo->EndVA;
+      Relocations = &SectionInfo->FileInfo.Relocations;
+    }
  }

  DecodedMinAddress = EntryPoint;
@@ -1447,9 +1493,10 @@ void Decoder::DecodeInstructionsAtEntry(FEXCore::Core::InternalThreadState* Thre
          EraseBlock = true;
        } else {
          LogMan::Msg::EFmt("{} instruction in entry block: {:X}",
-                            BlockIt->BlockStatus == DecodedBlockStatus::INVALID_INST ? "Invalid" :
-                            BlockIt->BlockStatus == DecodedBlockStatus::NOEXEC_INST  ? "NoExec" :
-                                                                                       "PartialDecode",
+                            BlockIt->BlockStatus == DecodedBlockStatus::INVALID_INST   ? "Invalid" :
+                            BlockIt->BlockStatus == DecodedBlockStatus::NOEXEC_INST    ? "NoExec" :
+                            BlockIt->BlockStatus == DecodedBlockStatus::BAD_RELOCATION ? "BadRelocation" :
+                                                                                         "PartialDecode",
                            OpAddress);
        }
        break;
@@ -4,9 +4,12 @@
 #include "Interface/Core/X86Tables/X86Tables.h"
 #include "Interface/IR/IR.h"

+#include <FEXCore/Config/Config.h>
+#include <FEXCore/Core/CodeCache.h>
 #include <FEXCore/Utils/ThreadPoolAllocator.h>
 #include <FEXCore/fextl/set.h>
 #include <FEXCore/fextl/vector.h>
+#include <FEXCore/fextl/robin_map.h>

 #include <array>
 #include <cstddef>
@@ -28,6 +31,7 @@ public:
    INVALID_INST,
    NOEXEC_INST,
    PARTIAL_DECODE_INST,
+    BAD_RELOCATION,
  };

  // New Frontend decoding
@@ -59,9 +63,6 @@ public:
  uint64_t DecodedMinAddress {};
  uint64_t DecodedMaxAddress {~0ULL};

-  void SetSectionMaxAddress(uint64_t v) {
-    SectionMaxAddress = v;
-  }
  void SetExternalBranches(fextl::set<uint64_t>* v) {
    ExternalBranches = v;
  }
@@ -87,6 +88,8 @@ private:
  FEXCore::Context::ContextImpl* CTX;
  const FEXCore::HLE::SyscallOSABI OSABI {};

+  FEX_CONFIG_OPT(EnableCodeCacheValidation, ENABLECODECACHEVALIDATION);
+
  bool DecodeInstructionImpl(uint64_t PC);
  DecodedBlockStatus DecodeInstruction(uint64_t PC);

@@ -100,7 +103,8 @@ private:

  uint8_t ReadByte();
  std::optional<uint8_t> PeekByte(uint8_t Offset);
-  uint64_t ReadData(uint8_t Size);
+  std::pair<uint64_t, bool> ReadData(uint8_t Size);
+
  void SkipBytes(uint8_t Size) {
    InstructionSize += Size;
  }
@@ -108,6 +112,8 @@ private:
  bool NormalOp(const FEXCore::X86Tables::X86InstInfo* Info, uint16_t Op, DecodedHeader Options = {});
  bool NormalOpHeader(const FEXCore::X86Tables::X86InstInfo* Info, uint16_t Op);

+  void DecodeREXIfValid(int8_t ExpectedOffset = -1);
+
  static constexpr size_t DefaultDecodedBufferSize = 0x10000;
  FEXCore::X86Tables::DecodedInst* DecodedBuffer {};
  Utils::PoolBufferWithTimedRetirement<FEXCore::X86Tables::DecodedInst*, 5000, 500> PoolObject;
@@ -117,6 +123,7 @@ private:
  uint64_t ExecutableRangeEnd {};
  bool ExecutableRangeWritable {};
  bool HitNonExecutableRange {};
+  bool HitBadRelocation {};

  const uint8_t* InstStream {};
  IR::OpSize GetGPROpSize() const {
@@ -130,13 +137,11 @@ private:
  FEXCore::X86Tables::DecodedInst* DecodeInst;

  // This is for multiblock data tracking
-  bool SymbolAvailable {false};
  uint64_t EntryPoint {};
  uint64_t MaxCondBranchForward {};
  uint64_t MaxCondBranchBackwards {~0ULL};
-  uint64_t SymbolMaxAddress {};
-  uint64_t SymbolMinAddress {~0ULL};
  uint64_t SectionMaxAddress {~0ULL};
+  uint64_t SectionMinAddress {};
  uint64_t NextBlockStartAddress {~0ULL};

  DecodedBlockInformation BlockInfo;
@@ -145,6 +150,8 @@ private:
  fextl::set<uint64_t> VisitedBlocks;
  fextl::set<uint64_t>* ExternalBranches {nullptr};

+  const fextl::robin_map<uint32_t, GuestRelocationType>* Relocations {nullptr};
+
  // ModRM rm decoding
  using DecodeModRMPtr = void (FEXCore::Frontend::Decoder::*)(X86Tables::DecodedOperand* Operand, X86Tables::ModRMDecoded ModRM);
  void DecodeModRM_16(X86Tables::DecodedOperand* Operand, X86Tables::ModRMDecoded ModRM);
@@ -435,12 +435,12 @@ struct OpHandlers<IR::OP_F80BCDSTORE> {
    FEXCORE_PROFILE_INSTANT_INCREMENT(Frame->Thread, AccumulatedFloatFallbackCount, 1);
    X80SoftFloat Src1 = Src1q;
    ScopedSoftFloatState State {FCW, Frame};
-    bool Negative = Src1.Sign;
+    bool Negative = Src1.Top.Sign;

    Src1 = X80SoftFloat::FRNDINT(&State.State, Src1);

    // Clear the Sign bit
-    Src1.Sign = 0;
+    Src1.Top.Sign = 0;

    uint64_t Tmp = Src1.ToI64(&State.State);
    X80SoftFloat Rv;
@@ -503,7 +503,7 @@ struct OpHandlers<IR::OP_F80BCDLOAD> {
    X80SoftFloat Tmp;

    Tmp = BCD;
-    Tmp.Sign = Negative;
+    Tmp.Top.Sign = Negative;
    return Tmp;
  }
 };
@@ -2,14 +2,14 @@
 #include "Interface/Core/Interpreter/Fallbacks/VectorFallbacks.h"
 #include "Interface/IR/IR.h"

-#ifdef _M_ARM_64
+#ifdef ARCHITECTURE_arm64
 #include <arm_neon.h>
 #endif

 #include <cstring>

 namespace FEXCore::CPU {
-#ifdef _M_ARM_64
+#ifdef ARCHITECTURE_arm64
 FEXCORE_PRESERVE_ALL_ATTR static int32_t GetImplicitLength(FEXCore::VectorRegType data, uint16_t control) {
  const auto is_using_words = (control & 1) != 0;

@@ -43,7 +43,15 @@ DEF_BINOP_WITH_CONSTANT(Ror, rorv, ror)
 DEF_OP(Constant) {
  auto Op = IROp->C<IR::IROp_Constant>();
  auto Dst = GetReg(Node);
-  LoadConstant(ARMEmitter::Size::i64Bit, Dst, Op->Constant);
+
+  const auto PadType = [Pad = Op->Pad]() {
+    switch (Pad) {
+    case IR::ConstPad::NoPad: return CPU::Arm64Emitter::PadType::NOPAD;
+    case IR::ConstPad::DoPad: return CPU::Arm64Emitter::PadType::DOPAD;
+    default: return CPU::Arm64Emitter::PadType::AUTOPAD;
+    }
+  }();
+  LoadConstant(ARMEmitter::Size::i64Bit, Dst, Op->Constant, PadType, Op->MaxBytes);
 }

 DEF_OP(EntrypointOffset) {
@@ -916,7 +924,7 @@ DEF_OP(Div) {
      mov(EmitSize, TMP2, Lower);
      mov(EmitSize, TMP3, Divisor);

-      ldr(TMP4, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.AArch64.LDIVHandler));
+      ldr(TMP4, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.LDIVHandler));

      str<ARMEmitter::IndexType::PRE>(ARMEmitter::XReg::lr, ARMEmitter::Reg::rsp, -16);
      blr(TMP4);
@@ -999,7 +1007,7 @@ DEF_OP(UDiv) {
      mov(EmitSize, TMP2, Lower);
      mov(EmitSize, TMP3, Divisor);

-      ldr(TMP4, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.AArch64.LUDIVHandler));
+      ldr(TMP4, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.LUDIVHandler));

      str<ARMEmitter::IndexType::PRE>(ARMEmitter::XReg::lr, ARMEmitter::Reg::rsp, -16);
      blr(TMP4);
@@ -28,7 +28,9 @@ void Arm64JITCore::InsertNamedThunkRelocation(ARMEmitter::Register Reg, const IR

  uint64_t Pointer = reinterpret_cast<uint64_t>(EmitterCTX->ThunkHandler->LookupThunk(Sum));

-  LoadConstant(ARMEmitter::Size::i64Bit, Reg, Pointer, false);
+  // Pointers are required to fit within 48-bit VA space.
+  // TODO: Force 6-byte `MaxSize`, with zext extension to 64-bit. Current code not smart enough to handle negatives.
+  LoadConstant(ARMEmitter::Size::i64Bit, Reg, Pointer, FEXCore::CPU::Arm64Emitter::PadType::AUTOPAD);
  Relocations.emplace_back(MoveABI);
 }

@@ -92,7 +94,11 @@ void Arm64JITCore::InsertGuestRIPMove(ARMEmitter::Register Reg, uint64_t Constan
  MoveABI.GuestRIP.GuestRIP = Constant;
  MoveABI.GuestRIP.RegisterIndex = Reg.Idx();

-  LoadConstant(ARMEmitter::Size::i64Bit, Reg, Constant, false);
+  // Pointers are required to fit within 48-bit VA space.
+  // TODO: Force 6-byte `MaxSize`, with sign extension to 64-bit. Current code not smart enough to handle negatives.
+  // 48-bit sign extension works because x86-64 guests only receive 47-bit VA space, with 48-bit being reserved for kernel.
+  // Additional quirk, "canonical" 48-bit pointers on x86-64, sign extend the 48-bit as well (Which is why kernel pointers are negative).
+  LoadConstant(ARMEmitter::Size::i64Bit, Reg, Constant, FEXCore::CPU::Arm64Emitter::PadType::AUTOPAD);
  Relocations.emplace_back(MoveABI);
 }

@@ -329,7 +329,7 @@ DEF_OP(TelemetrySetValue) {
  auto Op = IROp->C<IR::IROp_TelemetrySetValue>();
  auto Src = GetReg(Op->Value);

-  ldr(TMP2, STATE_PTR(CpuStateFrame, Pointers.Common.TelemetryValueAddresses[Op->TelemetryValueIndex]));
+  ldr(TMP2, STATE_PTR(CpuStateFrame, Pointers.TelemetryValueAddresses[Op->TelemetryValueIndex]));

  // Cortex fuses cmp+cset.
  cmp(ARMEmitter::Size::i32Bit, Src, 0);
@@ -56,12 +56,12 @@ DEF_OP(ExitFunction) {
  uint64_t NewRIP;

  if (IsInlineConstant(Op->NewRIP, &NewRIP) || IsInlineEntrypointOffset(Op->NewRIP, &NewRIP)) {
-#ifdef _M_ARM_64EC
+#ifdef ARCHITECTURE_arm64ec
    if (NewRIP < EC_CODE_BITMAP_MAX_ADDRESS && RtlIsEcCode(NewRIP)) {
      str(REG_CALLRET_SP, STATE_PTR(CpuStateFrame, State.callret_sp));
      add(ARMEmitter::Size::i64Bit, ARMEmitter::Reg::rsp, StaticRegisters[X86State::REG_RSP], 0);
-      LoadConstant(ARMEmitter::Size::i64Bit, EC_CALL_CHECKER_PC_REG, NewRIP);
-      ldr(TMP2, STATE_PTR(CpuStateFrame, Pointers.Common.ExitFunctionEC));
+      InsertGuestRIPMove(EC_CALL_CHECKER_PC_REG, NewRIP);
+      ldr(TMP2, STATE_PTR(CpuStateFrame, Pointers.ExitFunctionEC));
      br(TMP2);
    } else {
 #endif
@@ -150,16 +150,16 @@ DEF_OP(ExitFunction) {
        ARMEmitter::ForwardLabel TFUnset;
        ldrb(TMP1, STATE_PTR(CpuStateFrame, State.flags[X86State::RFLAG_TF_RAW_LOC]));
        (void)cbz(ARMEmitter::Size::i32Bit, TMP1, &TFUnset);
-        LoadConstant(ARMEmitter::Size::i64Bit, TMP1, NewRIP);
+        InsertGuestRIPMove(TMP1, NewRIP);
        str(TMP1, STATE, offsetof(FEXCore::Core::CpuStateFrame, State.rip));
-        ldr(TMP2, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.Common.DispatcherLoopTop));
+        ldr(TMP2, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.DispatcherLoopTop));
        blr(TMP2);
        (void)Bind(&TFUnset);
      }

      EmitLinkedBranch(NewRIP, Op->Hint == IR::BranchHint::Call);
      (void)Bind(&l_CallReturn);
-#ifdef _M_ARM_64EC
+#ifdef ARCHITECTURE_arm64ec
    }
 #endif
  } else {
@@ -186,7 +186,7 @@ DEF_OP(ExitFunction) {
    // Note: sub+cbnz used over cmp+br to preserve flags.
    sub(TMP1, TMP1, RipReg.X());
    (void)cbz(ARMEmitter::Size::i64Bit, TMP1, &SkipFullLookup);
-    ldr(TMP2, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.Common.DispatcherLoopTop));
+    ldr(TMP2, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.DispatcherLoopTop));
    str(RipReg.X(), STATE, offsetof(FEXCore::Core::CpuStateFrame, State.rip));

    (void)Bind(&SkipFullLookup);
@@ -283,8 +283,8 @@ DEF_OP(Syscall) {
    str(GetReg(Op->Header.Args[i]).X(), ARMEmitter::Reg::rsp, i * 8);
  }

-  ldr(ARMEmitter::XReg::x0, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.Common.SyscallHandlerObj));
-  ldr(ARMEmitter::XReg::x3, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.Common.SyscallHandlerFunc));
+  ldr(ARMEmitter::XReg::x0, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.SyscallHandlerObj));
+  ldr(ARMEmitter::XReg::x3, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.SyscallHandlerFunc));
  mov(ARMEmitter::Size::i64Bit, ARMEmitter::Reg::r1, STATE.R());

  // SP supporting move
@@ -322,7 +322,7 @@ DEF_OP(Thunk) {
  // X0: CTX
  // X1: Args (from guest stack)

-  SpillStaticRegs(TMP1); // spill to ctx before ra64 spill
+  SpillStaticRegs(TMP1, true, ~0U, ~0U, false); // spill to ctx before ra64 spill

  PushDynamicRegs(TMP1);

@@ -337,7 +337,7 @@ DEF_OP(Thunk) {

  PopDynamicRegs();

-  FillStaticRegs(); // load from ctx after ra64 refill
+  FillStaticRegs(true, ~0U, ~0U, std::nullopt, std::nullopt, false); // load from ctx after ra64 refill
 }

 DEF_OP(ValidateCode) {
@@ -397,9 +397,10 @@ DEF_OP(ThreadRemoveCodeEntry) {
  // X1: RIP
  mov(ARMEmitter::Size::i64Bit, ARMEmitter::Reg::r0, STATE.R());

-  LoadConstant(ARMEmitter::Size::i64Bit, ARMEmitter::Reg::r1, Entry);
+  // TODO: Relocations don't seem to be wired up to this...?
+  LoadConstant(ARMEmitter::Size::i64Bit, ARMEmitter::Reg::r1, Entry, CPU::Arm64Emitter::PadType::AUTOPAD);

-  ldr(ARMEmitter::XReg::x2, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.Common.ThreadRemoveCodeEntryFromJIT));
+  ldr(ARMEmitter::XReg::x2, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.ThreadRemoveCodeEntryFromJIT));
  if (!CTX->Config.DisableVixlIndirectCalls) [[unlikely]] {
    GenerateIndirectRuntimeCall<void, void*, void*>(ARMEmitter::Reg::r2);
  } else {
@@ -424,8 +425,8 @@ DEF_OP(CPUID) {
  // x0 = CPUID Handler
  // x1 = CPUID Function
  // x2 = CPUID Leaf
-  ldr(ARMEmitter::XReg::x0, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.Common.CPUIDObj));
-  ldr(ARMEmitter::XReg::x3, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.Common.CPUIDFunction));
+  ldr(ARMEmitter::XReg::x0, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.CPUIDObj));
+  ldr(ARMEmitter::XReg::x3, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.CPUIDFunction));

  if (!TMP_ABIARGS) {
    mov(ARMEmitter::Size::i64Bit, ARMEmitter::Reg::r1, TMP2);
@@ -465,8 +466,8 @@ DEF_OP(XGetBV) {

  // x0 = CPUID Handler
  // x1 = XCR Function
-  ldr(ARMEmitter::XReg::x0, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.Common.CPUIDObj));
-  ldr(ARMEmitter::XReg::x2, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.Common.XCRFunction));
+  ldr(ARMEmitter::XReg::x0, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.CPUIDObj));
+  ldr(ARMEmitter::XReg::x2, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.XCRFunction));
  if (!CTX->Config.DisableVixlIndirectCalls) [[unlikely]] {
    GenerateIndirectRuntimeCall<uint64_t, void*, uint32_t>(ARMEmitter::Reg::r2);
  } else {
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: MIT
 /*
 $info$
-glossary: Splatter ~ a code generator backend that concaternates configurable macros instead of doing isel
+glossary: Splatter ~ a code generator backend that concatenates configurable macros instead of doing isel
 glossary: IR ~ Intermediate Representation, our high-level opcode representation, loosely modeling arm64
 glossary: SSA ~ Single Static Assignment, a form of representing IR in memory
 glossary: Basic Block ~ A block of instructions with no control flow, terminated by control flow
@@ -133,8 +133,8 @@ void Arm64JITCore::Op_Unhandled(const IR::IROp_Header* IROp, IR::Ref Node) {
      const auto Src1 = GetVReg(IROp->Args[0]);
      fmov(VTMP1.S(), Src1.S());

-      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
-      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].Func));
+      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
+      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].Func));
      blr(TMP1);

      ldr<ARMEmitter::IndexType::POST>(ARMEmitter::XReg::lr, ARMEmitter::Reg::rsp, 16);
@@ -151,8 +151,8 @@ void Arm64JITCore::Op_Unhandled(const IR::IROp_Header* IROp, IR::Ref Node) {
      const auto Src1 = GetVReg(IROp->Args[0]);
      fmov(VTMP1.D(), Src1.D());

-      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
-      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].Func));
+      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
+      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].Func));
      blr(TMP1);

      ldr<ARMEmitter::IndexType::POST>(ARMEmitter::XReg::lr, ARMEmitter::Reg::rsp, 16);
@@ -176,8 +176,8 @@ void Arm64JITCore::Op_Unhandled(const IR::IROp_Header* IROp, IR::Ref Node) {
        mov(ARMEmitter::Size::i32Bit, TMP2, Src1);
      }

-      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
-      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].Func));
+      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
+      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].Func));
      blr(TMP1);

      ldr<ARMEmitter::IndexType::POST>(ARMEmitter::XReg::lr, ARMEmitter::Reg::rsp, 16);
@@ -194,8 +194,8 @@ void Arm64JITCore::Op_Unhandled(const IR::IROp_Header* IROp, IR::Ref Node) {
      const auto Src1 = GetVReg(IROp->Args[0]);
      mov(VTMP1.Q(), Src1.Q());

-      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
-      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].Func));
+      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
+      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].Func));
      blr(TMP1);

      ldr<ARMEmitter::IndexType::POST>(ARMEmitter::XReg::lr, ARMEmitter::Reg::rsp, 16);
@@ -212,8 +212,8 @@ void Arm64JITCore::Op_Unhandled(const IR::IROp_Header* IROp, IR::Ref Node) {
      const auto Src1 = GetVReg(IROp->Args[0]);
      mov(VTMP1.Q(), Src1.Q());

-      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
-      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].Func));
+      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
+      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].Func));
      blr(TMP1);

      ldr<ARMEmitter::IndexType::POST>(ARMEmitter::XReg::lr, ARMEmitter::Reg::rsp, 16);
@@ -230,8 +230,8 @@ void Arm64JITCore::Op_Unhandled(const IR::IROp_Header* IROp, IR::Ref Node) {
      const auto Src1 = GetVReg(IROp->Args[0]);
      fmov(VTMP1.D(), Src1.D());

-      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
-      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].Func));
+      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
+      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].Func));
      blr(TMP1);

      ldr<ARMEmitter::IndexType::POST>(ARMEmitter::XReg::lr, ARMEmitter::Reg::rsp, 16);
@@ -254,8 +254,8 @@ void Arm64JITCore::Op_Unhandled(const IR::IROp_Header* IROp, IR::Ref Node) {

      fmov(VTMP1.D(), Src1.D());

-      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
-      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].Func));
+      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
+      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].Func));
      blr(TMP1);

      ldr<ARMEmitter::IndexType::POST>(ARMEmitter::XReg::lr, ARMEmitter::Reg::rsp, 16);
@@ -276,8 +276,8 @@ void Arm64JITCore::Op_Unhandled(const IR::IROp_Header* IROp, IR::Ref Node) {
      fmov(VTMP1.D(), Src1.D());
      fmov(VTMP2.D(), Src2.D());

-      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
-      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].Func));
+      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
+      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].Func));
      blr(TMP1);

      ldr<ARMEmitter::IndexType::POST>(ARMEmitter::XReg::lr, ARMEmitter::Reg::rsp, 16);
@@ -294,8 +294,8 @@ void Arm64JITCore::Op_Unhandled(const IR::IROp_Header* IROp, IR::Ref Node) {
      const auto Src1 = GetVReg(IROp->Args[0]);
      mov(VTMP1.Q(), Src1.Q());

-      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
-      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].Func));
+      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
+      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].Func));
      blr(TMP1);

      ldr<ARMEmitter::IndexType::POST>(ARMEmitter::XReg::lr, ARMEmitter::Reg::rsp, 16);
@@ -312,8 +312,8 @@ void Arm64JITCore::Op_Unhandled(const IR::IROp_Header* IROp, IR::Ref Node) {
      const auto Src1 = GetVReg(IROp->Args[0]);
      mov(VTMP1.Q(), Src1.Q());

-      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
-      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].Func));
+      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
+      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].Func));
      blr(TMP1);

      ldr<ARMEmitter::IndexType::POST>(ARMEmitter::XReg::lr, ARMEmitter::Reg::rsp, 16);
@@ -330,8 +330,8 @@ void Arm64JITCore::Op_Unhandled(const IR::IROp_Header* IROp, IR::Ref Node) {
      const auto Src1 = GetVReg(IROp->Args[0]);
      mov(VTMP1.Q(), Src1.Q());

-      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
-      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].Func));
+      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
+      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].Func));
      blr(TMP1);

      ldr<ARMEmitter::IndexType::POST>(ARMEmitter::XReg::lr, ARMEmitter::Reg::rsp, 16);
@@ -351,8 +351,8 @@ void Arm64JITCore::Op_Unhandled(const IR::IROp_Header* IROp, IR::Ref Node) {
      mov(VTMP1.Q(), Src1.Q());
      mov(VTMP2.Q(), Src2.Q());

-      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
-      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].Func));
+      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
+      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].Func));
      blr(TMP1);

      ldr<ARMEmitter::IndexType::POST>(ARMEmitter::XReg::lr, ARMEmitter::Reg::rsp, 16);
@@ -369,8 +369,8 @@ void Arm64JITCore::Op_Unhandled(const IR::IROp_Header* IROp, IR::Ref Node) {
      const auto Src1 = GetVReg(IROp->Args[0]);
      mov(VTMP1.Q(), Src1.Q());

-      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
-      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].Func));
+      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
+      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].Func));
      blr(TMP1);

      ldr<ARMEmitter::IndexType::POST>(ARMEmitter::XReg::lr, ARMEmitter::Reg::rsp, 16);
@@ -394,8 +394,8 @@ void Arm64JITCore::Op_Unhandled(const IR::IROp_Header* IROp, IR::Ref Node) {

      mov(VTMP1.Q(), Src1.Q());

-      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
-      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].Func));
+      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
+      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].Func));
      blr(TMP1);

      ldr<ARMEmitter::IndexType::POST>(ARMEmitter::XReg::lr, ARMEmitter::Reg::rsp, 16);
@@ -416,8 +416,8 @@ void Arm64JITCore::Op_Unhandled(const IR::IROp_Header* IROp, IR::Ref Node) {
      mov(VTMP1.Q(), Src1.Q());
      mov(VTMP2.Q(), Src2.Q());

-      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
-      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].Func));
+      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
+      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].Func));
      blr(TMP1);

      ldr<ARMEmitter::IndexType::POST>(ARMEmitter::XReg::lr, ARMEmitter::Reg::rsp, 16);
@@ -434,8 +434,8 @@ void Arm64JITCore::Op_Unhandled(const IR::IROp_Header* IROp, IR::Ref Node) {
      // tmp2 (x1/x11): source 2
      // tmp3 (x2/x12): source 3
      const auto Op = IROp->C<IR::IROp_VPCMPESTRX>();
-      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
-      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].Func));
+      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
+      ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].Func));

      stp<ARMEmitter::IndexType::PRE>(TMP1, ARMEmitter::XReg::lr, ARMEmitter::Reg::rsp, -16);

@@ -476,8 +476,8 @@ void Arm64JITCore::Op_Unhandled(const IR::IROp_Header* IROp, IR::Ref Node) {
      mov(VTMP2.Q(), Src2.Q());
      movz(ARMEmitter::Size::i32Bit, TMP1, Control);

-      ldr(TMP2, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
-      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.Common.FallbackHandlerPointers[Info.HandlerIndex].Func));
+      ldr(TMP2, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].ABIHandler));
+      ldr(TMP4, STATE_PTR(CpuStateFrame, Pointers.FallbackHandlerPointers[Info.HandlerIndex].Func));
      blr(TMP2);

      ldr<ARMEmitter::IndexType::POST>(ARMEmitter::XReg::lr, ARMEmitter::Reg::rsp, 16);
@@ -533,7 +533,7 @@ uint64_t Arm64JITCore::ExitFunctionLink(FEXCore::Core::CpuStateFrame* Frame, FEX
  if (TFSet) {
    // If TF is set, the cache must be skipped as different code needs to be generated.
    Frame->State.rip = GuestRip;
-    return Frame->Pointers.Common.DispatcherLoopTop;
+    return Frame->Pointers.DispatcherLoopTop;
  } else {
    {
      // Guard the LookupCache lock with the code invalidation mutex, to avoid issues with forking
@@ -590,7 +590,7 @@ uint64_t Arm64JITCore::ExitFunctionLink(FEXCore::Core::CpuStateFrame* Frame, FEX
  } else {
    // This case is common between calls and jumps as the thunk callsite can be left untouched.
    std::atomic_ref<uint64_t>(Record->HostCode).store(HostCode, std::memory_order::seq_cst);
-#ifdef _M_ARM_64
+#ifdef ARCHITECTURE_arm64
    // Make memory write visible to other threads reading the same location
    asm volatile("dc cvau, %0; dsb ish" : : "r"(Record->HostCode) :);
 #endif
@@ -632,36 +632,32 @@ Arm64JITCore::Arm64JITCore(FEXCore::Context::ContextImpl* ctx, FEXCore::Core::In
    // Set up pointers that the JIT needs to load

    // Common
-    auto& Common = ThreadState->CurrentFrame->Pointers.Common;
+    auto& Ptrs = ThreadState->CurrentFrame->Pointers;

-    Common.PrintValue = reinterpret_cast<uint64_t>(PrintValue);
-    Common.PrintVectorValue = reinterpret_cast<uint64_t>(PrintVectorValue);
-    Common.ThreadRemoveCodeEntryFromJIT = reinterpret_cast<uintptr_t>(&Context::ContextImpl::ThreadRemoveCodeEntryFromJit);
-    Common.MonoBackpatcherWrite = reinterpret_cast<uint64_t>(&Context::ContextImpl::MonoBackpatcherWrite);
-    Common.CPUIDObj = reinterpret_cast<uint64_t>(&CTX->CPUID);
+    Ptrs.PrintValue = reinterpret_cast<uint64_t>(PrintValue);
+    Ptrs.PrintVectorValue = reinterpret_cast<uint64_t>(PrintVectorValue);
+    Ptrs.ThreadRemoveCodeEntryFromJIT = reinterpret_cast<uintptr_t>(&Context::ContextImpl::ThreadRemoveCodeEntryFromJit);
+    Ptrs.MonoBackpatcherWrite = reinterpret_cast<uint64_t>(&Context::ContextImpl::MonoBackpatcherWrite);
+    Ptrs.CPUIDObj = reinterpret_cast<uint64_t>(&CTX->CPUID);

    {
      FEXCore::Utils::MemberFunctionToPointerCast PMF(&FEXCore::CPUIDEmu::RunFunction);
-      Common.CPUIDFunction = PMF.GetConvertedPointer();
+      Ptrs.CPUIDFunction = PMF.GetConvertedPointer();
    }

    {
      FEXCore::Utils::MemberFunctionToPointerCast PMF(&FEXCore::CPUIDEmu::RunXCRFunction);
-      Common.XCRFunction = PMF.GetConvertedPointer();
+      Ptrs.XCRFunction = PMF.GetConvertedPointer();
    }

    {
      FEXCore::Utils::MemberFunctionToPointerCast PMF(&FEXCore::HLE::SyscallHandler::HandleSyscall);
-      Common.SyscallHandlerObj = reinterpret_cast<uint64_t>(CTX->SyscallHandler);
-      Common.SyscallHandlerFunc = PMF.GetVTableEntry(CTX->SyscallHandler);
+      Ptrs.SyscallHandlerObj = reinterpret_cast<uint64_t>(CTX->SyscallHandler);
+      Ptrs.SyscallHandlerFunc = PMF.GetVTableEntry(CTX->SyscallHandler);
    }
-    Common.ExitFunctionLink = reinterpret_cast<uintptr_t>(&Arm64JITCore::ExitFunctionLink);
-
-    // Platform Specific
-    auto& AArch64 = ThreadState->CurrentFrame->Pointers.AArch64;
-
-    AArch64.LUDIV = reinterpret_cast<uint64_t>(LUDIV);
-    AArch64.LDIV = reinterpret_cast<uint64_t>(LDIV);
+    Ptrs.ExitFunctionLink = reinterpret_cast<uintptr_t>(&Arm64JITCore::ExitFunctionLink);
+    Ptrs.LUDIV = reinterpret_cast<uint64_t>(LUDIV);
+    Ptrs.LDIV = reinterpret_cast<uint64_t>(LDIV);
  }

  CurrentCodeBuffer = CodeBuffers.GetLatest();
@@ -680,7 +676,7 @@ void Arm64JITCore::ClearCache() {
  auto lk = PrevCodeBuffer->LookupCache->AcquireWriteLock();

  auto CodeBuffer = GetEmptyCodeBuffer();
-  SetBuffer(CodeBuffer->Ptr, CodeBuffer->Size);
+  SetBuffer(CodeBuffer->Ptr, CodeBuffer->AllocatedSize);
  EmitDetectionString();

  ThreadState->LookupCache->ChangeGuestToHostMapping(*PrevCodeBuffer, *CurrentCodeBuffer->LookupCache, lk);
@@ -760,7 +756,7 @@ void Arm64JITCore::EmitTFCheck() {

  LoadConstant(ARMEmitter::Size::i64Bit, TMP1, Constant);
  str(TMP1, STATE, offsetof(FEXCore::Core::CpuStateFrame, SynchronousFaultData));
-  ldr(TMP1, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.Common.GuestSignal_SIGTRAP));
+  ldr(TMP1, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.GuestSignal_SIGTRAP));
  br(TMP1);

  (void)Bind(&l_TFBlocked);
@@ -778,7 +774,7 @@ void Arm64JITCore::EmitSuspendInterruptCheck() {
         offsetof(FEXCore::Core::InternalThreadState, InterruptFaultPage) - offsetof(FEXCore::Core::InternalThreadState, BaseFrameState));
  }

-#ifdef _M_ARM_64EC
+#ifdef ARCHITECTURE_arm64ec
  static constexpr uint16_t SuspendMagic {0xCAFE};

  ldr(TMP2.W(), STATE_PTR(CpuStateFrame, SuspendDoorbell));
@@ -1086,14 +1082,13 @@ CPUBackend::CompiledCode Arm64JITCore::CompileCode(uint64_t Entry, uint64_t Size
      }

      // NOTE: 16-byte alignment of the new cursor offset must be preserved for block linking records
-      SetBuffer(CurrentCodeBuffer->Ptr, CurrentCodeBuffer->Size);
-      SetCursorOffset(AlignUp(CodeBuffers.LatestOffset, 16));
-      if ((GetCursorOffset() + TempSize) > (CurrentCodeBuffer->Size - Utils::FEX_PAGE_SIZE)) {
+      SetBuffer(CurrentCodeBuffer->Ptr, CurrentCodeBuffer->AllocatedSize);
+      SetCursorOffset(CodeBuffers.LatestOffset);
+      Align16B();
+      if ((GetCursorOffset() + TempSize) > CurrentCodeBuffer->UsableSize()) {
        CTX->ClearCodeCache(ThreadState);
      }

-      Align16B();
-
      CodeBuffers.LatestOffset = GetCursorOffset();
    }

@@ -566,6 +566,24 @@ DEF_OP(LoadDF) {
  ldrsb(Dst.X(), STATE, offsetof(FEXCore::Core::CPUState, flags[Flag]));
 }

+DEF_OP(ContextClear) {
+  auto Op = IROp->C<IR::IROp_ContextClear>();
+  if (CTX->HostFeatures.SupportsCLZERO) {
+    // We can use CLZero directly when hardware supports it.
+    // Provides a fairly generous speed-up on Ampere1A hardware.
+    // TODO: When FEAT_MOPS hardware ships, test memset using MOPS.
+    for (size_t i = 0; i < Op->Size; i += 64) {
+      add(ARMEmitter::Size::i64Bit, TMP1, STATE.R(), Op->Offset + i);
+      dc(ARMEmitter::DataCacheOperation::ZVA, TMP1);
+    }
+  } else {
+    movi(ARMEmitter::SubRegSize::i64Bit, VTMP1.Q(), 0);
+    for (size_t i = 0; i < Op->Size; i += 32) {
+      stp<ARMEmitter::IndexType::OFFSET>(VTMP1.Q(), VTMP1.Q(), STATE.R(), Op->Offset + i);
+    }
+  }
+}
+
 ARMEmitter::ExtendedMemOperand Arm64JITCore::GenerateMemOperand(
  IR::OpSize AccessSize, ARMEmitter::Register Base, IR::OrderedNodeWrapper Offset, IR::MemOffsetType OffsetType, uint8_t OffsetScale) {
  if (Offset.IsInvalid()) {
@@ -78,19 +78,19 @@ DEF_OP(Break) {

  switch (Op->Reason.Signal) {
  case Core::FAULT_SIGILL:
-    ldr(TMP1, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.Common.GuestSignal_SIGILL));
+    ldr(TMP1, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.GuestSignal_SIGILL));
    br(TMP1);
    break;
  case Core::FAULT_SIGTRAP:
-    ldr(TMP1, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.Common.GuestSignal_SIGTRAP));
+    ldr(TMP1, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.GuestSignal_SIGTRAP));
    br(TMP1);
    break;
  case Core::FAULT_SIGSEGV:
-    ldr(TMP1, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.Common.GuestSignal_SIGSEGV));
+    ldr(TMP1, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.GuestSignal_SIGSEGV));
    br(TMP1);
    break;
  default:
-    ldr(TMP1, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.Common.GuestSignal_SIGTRAP));
+    ldr(TMP1, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.GuestSignal_SIGTRAP));
    br(TMP1);
    break;
  }
@@ -189,11 +189,11 @@ DEF_OP(Print) {

  if (IsGPR(Op->Value)) {
    mov(ARMEmitter::Size::i64Bit, ARMEmitter::Reg::r0, GetReg(Op->Value));
-    ldr(ARMEmitter::XReg::x3, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.Common.PrintValue));
+    ldr(ARMEmitter::XReg::x3, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.PrintValue));
  } else {
    fmov(ARMEmitter::Size::i64Bit, ARMEmitter::Reg::r0, GetVReg(Op->Value), false);
    fmov(ARMEmitter::Size::i64Bit, ARMEmitter::Reg::r1, GetVReg(Op->Value), true);
-    ldr(ARMEmitter::XReg::x3, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.Common.PrintVectorValue));
+    ldr(ARMEmitter::XReg::x3, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.PrintVectorValue));
  }

  if (!CTX->Config.DisableVixlIndirectCalls) [[unlikely]] {
@@ -241,7 +241,7 @@ DEF_OP(ProcessorID) {
  sub(ARMEmitter::Size::i64Bit, ARMEmitter::Reg::rsp, ARMEmitter::Reg::rsp, 16);

  // Load the getcpu syscall number
-#if defined(_M_X86_64)
+#if defined(ARCHITECTURE_x86_64)
  // Just to ensure the syscall number doesn't change if compiled for an x86_64 host.
  constexpr auto GetCPUSyscallNum = 0xa8;
 #else
@@ -305,20 +305,20 @@ DEF_OP(MonoBackpatcherWrite) {
    mov(ARMEmitter::Size::i64Bit, ARMEmitter::Reg::r3, TMP4);
  }

-#ifdef _M_ARM_64EC
+#ifdef ARCHITECTURE_arm64ec
  ldr(TMP2, ARMEmitter::XReg::x18, TEB_CPU_AREA_OFFSET);
  LoadConstant(ARMEmitter::Size::i32Bit, TMP1, 1);
  strb(TMP1.W(), TMP2, CPU_AREA_IN_SYSCALL_CALLBACK_OFFSET);
 #endif

-  ldr(ARMEmitter::XReg::x4, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.Common.MonoBackpatcherWrite));
+  ldr(ARMEmitter::XReg::x4, STATE, offsetof(FEXCore::Core::CpuStateFrame, Pointers.MonoBackpatcherWrite));
  if (!CTX->Config.DisableVixlIndirectCalls) [[unlikely]] {
    GenerateIndirectRuntimeCall<void, void*, uint8_t, uint64_t, uint64_t>(ARMEmitter::Reg::r4);
  } else {
    blr(ARMEmitter::Reg::r4);
  }

-#ifdef _M_ARM_64EC
+#ifdef ARCHITECTURE_arm64ec
  ldr(TMP2, ARMEmitter::XReg::x18, TEB_CPU_AREA_OFFSET);
  strb(ARMEmitter::WReg::zr, TMP2, CPU_AREA_IN_SYSCALL_CALLBACK_OFFSET);
 #endif
@@ -74,6 +74,17 @@ struct RelocGuestRIP final {
 };

 union Relocation {
+  // Clang 16 Can't default-initialize this union
+  static Relocation Default() {
+#if __clang_major__ < 17
+    Relocation Ret {.Header {}};
+    memset(&Ret, 0, sizeof(Ret));
+    return Ret;
+#else
+    return {};
+#endif
+  }
+
  RelocationHeader Header {};

  RelocNamedSymbolLiteral NamedSymbolLiteral;
@@ -977,7 +977,7 @@ DEF_OP(LoadNamedVectorConstant) {
  }
  // Load the pointer.
  auto GenerateMemOperand = [this](IR::OpSize OpSize, uint32_t NamedConstant, ARMEmitter::Register Base) {
-    const auto ConstantOffset = offsetof(FEXCore::Core::CpuStateFrame, Pointers.Common.NamedVectorConstants[NamedConstant]);
+    const auto ConstantOffset = offsetof(FEXCore::Core::CpuStateFrame, Pointers.NamedVectorConstants[NamedConstant]);

    if (ConstantOffset <= 255 || // Unscaled 9-bit signed
        ((ConstantOffset & (IR::OpSizeToSize(OpSize) - 1)) == 0 &&
@@ -985,13 +985,13 @@ DEF_OP(LoadNamedVectorConstant) {
      return ARMEmitter::ExtendedMemOperand(Base.X(), ARMEmitter::IndexType::OFFSET, ConstantOffset);
    }

-    ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.Common.NamedVectorConstantPointers[NamedConstant]));
+    ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.NamedVectorConstantPointers[NamedConstant]));
    return ARMEmitter::ExtendedMemOperand(TMP1, ARMEmitter::IndexType::OFFSET, 0);
  };

  if (OpSize == IR::OpSize::i256Bit) {
    // Handle SVE 32-byte variant upfront.
-    ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.Common.NamedVectorConstantPointers[Op->Constant]));
+    ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.NamedVectorConstantPointers[Op->Constant]));
    ld1b<ARMEmitter::SubRegSize::i8Bit>(Dst.Z(), PRED_TMP_32B.Zeroing(), TMP1, 0);
    return;
  }
@@ -1013,7 +1013,7 @@ DEF_OP(LoadNamedVectorIndexedConstant) {
  const auto Dst = GetVReg(Node);

  // Load the pointer.
-  ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.Common.IndexedNamedVectorConstantPointers[Op->Constant]));
+  ldr(TMP1, STATE_PTR(CpuStateFrame, Pointers.IndexedNamedVectorConstantPointers[Op->Constant]));

  switch (OpSize) {
  case IR::OpSize::i8Bit: ldrb(Dst, TMP1, Op->Index); break;
@@ -1117,6 +1117,29 @@ DEF_OP(VAddP) {
  }
 }

+DEF_OP(VOrn) {
+  const auto Op = IROp->C<IR::IROp_VOrn>();
+  const auto OpSize = IROp->Size;
+
+  const auto Is256Bit = OpSize == IR::OpSize::i256Bit;
+  const auto Is128Bit = OpSize == IR::OpSize::i128Bit;
+  LOGMAN_THROW_A_FMT(!Is256Bit || HostSupportsSVE256, "Need SVE256 support in order to use {} with 256-bit operation", __func__);
+
+  const auto Dst = GetVReg(Node);
+  const auto Vector1 = GetVReg(Op->Vector1);
+  const auto Vector2 = GetVReg(Op->Vector2);
+
+  if (HostSupportsSVE256 && Is256Bit) {
+    const auto Pred = PRED_TMP_32B.Merging();
+    not_(ARMEmitter::SubRegSize::i8Bit, VTMP1.Z(), Pred, Vector2.Z());
+    orr(Dst.Z(), Vector1.Z(), VTMP1.Z());
+  } else if (Is128Bit) {
+    orn(Dst.Q(), Vector1.Q(), Vector2.Q());
+  } else {
+    orn(Dst.D(), Vector1.D(), Vector2.D());
+  }
+}
+
 DEF_OP(VFAddV) {
  const auto Op = IROp->C<IR::IROp_VFAddV>();
  const auto OpSize = IROp->Size;
@@ -141,7 +141,7 @@ struct GuestToHostMap {
    BlockLinks->insert({{GuestDestination, HostLink}, delinker});
  }

-  bool AddBlockExecutableRange(const fextl::set<uint64_t>& Addresses, uint64_t Start, uint64_t Length, const LookupCacheWriteLockToken&) {
+  bool AddBlockExecutableRange(const std::ranges::input_range auto& Addresses, uint64_t Start, uint64_t Length, const LookupCacheWriteLockToken&) {
    bool rv = false;

    for (auto CurrentPage = Start >> 12, EndPage = (Start + Length - 1) >> 12; CurrentPage <= EndPage; CurrentPage++) {
@@ -407,7 +407,7 @@ private:
        if (!NewPageBacking) {
          // Couldn't allocate, clear L2 and retry
          ClearL2Cache(lk);
-          CacheBlockMapping(Address, Entry, false, lk);
+          CacheBlockMapping(FullAddress, Entry, false, lk);
          return;
        }
        Pointers[Address] = NewPageBacking;
@@ -1039,6 +1039,34 @@ void OpDispatchBuilder::TESTOp(OpcodeArgs, uint32_t SrcIndex) {
  InvalidateAF();
 }

+void OpDispatchBuilder::ARPLOp(OpcodeArgs) {
+  // ARPL r/m16, r16
+  // If the RPL field in the destination selector is less privileged than the
+  // RPL field in the source selector, then adjust destination RPL to match
+  // source RPL and set ZF=1. Otherwise ZF=0 and destination is unchanged.
+  //
+  // Only ZF is modified by ARPL.
+  constexpr auto Size = OpSize::i16Bit;
+
+  Ref Dest = LoadSourceGPR_WithOpSize(Op, Op->Dest, Size, Op->Flags, {.AllowUpperGarbage = true});
+  Ref Src = LoadSourceGPR_WithOpSize(Op, Op->Src[0], Size, Op->Flags, {.AllowUpperGarbage = true});
+
+  // RPL is the low two bits of the selector.
+  Ref DestRPL = _Bfe(OpSize::i32Bit, 2, 0, Dest);
+  Ref SrcRPL = _Bfe(OpSize::i32Bit, 2, 0, Src);
+
+  // NeedUpdate is 1 when DestRPL < SrcRPL, else 0.
+  Ref NeedUpdate = _Select(OpSize::i32Bit, OpSize::i32Bit, CondClass::ULT, DestRPL, SrcRPL, Constant(1), Constant(0));
+  SetRFLAG<FEXCore::X86State::RFLAG_ZF_RAW_LOC>(NeedUpdate);
+
+  // Compute adjusted destination selector: (Dest & ~3) | SrcRPL.
+  auto NewDest = _Bfxil(OpSize::i32Bit, 2, 0, Dest, SrcRPL);
+
+  // Conditionally select updated selector based on NeedUpdate.
+  Ref FinalDest = _Select(OpSize::i32Bit, OpSize::i32Bit, CondClass::NEQ, NeedUpdate, Constant(0), NewDest, Dest);
+  StoreResultGPR_WithOpSize(Op, Op->Dest, FinalDest, Size);
+}
+
 void OpDispatchBuilder::MOVSXDOp(OpcodeArgs) {
  // This instruction is a bit special
  // if SrcSize == 2
@@ -1325,35 +1353,12 @@ void OpDispatchBuilder::MOVSegOp(OpcodeArgs, bool ToSeg) {
 }

 void OpDispatchBuilder::MOVOffsetOp(OpcodeArgs) {
-
-  auto GenMemSrcFromOp = [&](size_t StartingSource) -> AddressMode {
-    const uint64_t Lower = Op->Src[StartingSource].Literal();
-    const uint64_t Upper = Op->Src[StartingSource + 1].Literal();
-    const uint64_t Combined = (Upper << 32) | Lower;
-    const auto GPRSize = GetGPROpSize();
-
-    AddressMode A {
-      .Segment = GetSegment(Op->Flags),
-      .Offset = static_cast<int64_t>(Combined),
-      .AddrSize = (Op->Flags & X86Tables::DecodeFlags::FLAG_ADDRESS_SIZE) != 0 ? (GPRSize >> 1) : GPRSize,
-      .NonTSO = false,
-    };
-
-    return A;
-  };
  switch (Op->OP) {
  case 0xA0:
  case 0xA1: {
    // Source is memory(literal)
    // Dest is GPR
-    Ref Src {};
-    if (Op->Src[0].Data.Literal.Size <= 4) {
-      Src = LoadSourceGPR(Op, Op->Src[0], Op->Flags, {.ForceLoad = true});
-    } else {
-      const auto OpSize = OpSizeFromSrc(Op);
-      auto A = GenMemSrcFromOp(0);
-      Src = _LoadMemGPRAutoTSO(OpSize, A, OpSize::i8Bit);
-    }
+    auto Src = LoadSourceGPR(Op, Op->Src[0], Op->Flags, {.ForceLoad = true});
    StoreResultGPR(Op, Op->Dest, Src);
    break;
  }
@@ -1365,13 +1370,7 @@ void OpDispatchBuilder::MOVOffsetOp(OpcodeArgs) {

    // This one is a bit special since the destination is a literal
    // So the destination gets stored in Src[1]
-    if (Op->Src[1].Data.Literal.Size <= 4) {
-      StoreResultGPR(Op, Op->Src[1], Src);
-    } else {
-      const auto OpSize = OpSizeFromSrc(Op);
-      auto A = GenMemSrcFromOp(1);
-      _StoreMemGPRAutoTSO(OpSize, A, Src, OpSize::i8Bit);
-    }
+    StoreResultGPR(Op, Op->Src[1], Src);
    break;
  }
  }
@@ -1396,7 +1395,7 @@ void OpDispatchBuilder::CPUIDOp(OpcodeArgs) {
  StoreGPRRegister(X86State::REG_RDX, RDX);
 }

-uint32_t OpDispatchBuilder::LoadConstantShift(X86Tables::DecodedOp Op, bool Is1Bit) {
+uint32_t OpDispatchBuilder::GetConstantShift(X86Tables::DecodedOp Op, bool Is1Bit) {
  if (Is1Bit) {
    return 1;
  } else {
@@ -1431,7 +1430,7 @@ void OpDispatchBuilder::SHLOp(OpcodeArgs) {
 void OpDispatchBuilder::SHLImmediateOp(OpcodeArgs, bool SHL1Bit) {
  Ref Dest = LoadSourceGPR(Op, Op->Dest, Op->Flags, {.AllowUpperGarbage = true});

-  uint64_t Shift = LoadConstantShift(Op, SHL1Bit);
+  uint64_t Shift = GetConstantShift(Op, SHL1Bit);
  const auto Size = GetSrcBitSize(Op);

  Ref Result = _Lshl(Size == 64 ? OpSize::i64Bit : OpSize::i32Bit, Dest, Constant(Shift));
@@ -1454,7 +1453,7 @@ void OpDispatchBuilder::SHRImmediateOp(OpcodeArgs, bool SHR1Bit) {
  const auto Size = GetSrcBitSize(Op);
  auto Dest = LoadSourceGPR(Op, Op->Dest, Op->Flags, {.AllowUpperGarbage = Size >= 32});

-  uint64_t Shift = LoadConstantShift(Op, SHR1Bit);
+  uint64_t Shift = GetConstantShift(Op, SHR1Bit);
  auto ALUOp = _Lshr(Size == 64 ? OpSize::i64Bit : OpSize::i32Bit, Dest, Constant(Shift));

  CalculateFlags_ShiftRightImmediate(OpSizeFromSrc(Op), ALUOp, Dest, Shift);
@@ -1506,7 +1505,7 @@ void OpDispatchBuilder::SHLDOp(OpcodeArgs) {
 }

 void OpDispatchBuilder::SHLDImmediateOp(OpcodeArgs) {
-  uint64_t Shift = LoadConstantShift(Op, false);
+  uint64_t Shift = GetConstantShift(Op, false);
  const auto Size = GetSrcBitSize(Op);

  Ref Src = LoadSourceGPR(Op, Op->Src[0], Op->Flags, {.AllowUpperGarbage = Size >= 32});
@@ -1574,7 +1573,7 @@ void OpDispatchBuilder::SHRDImmediateOp(OpcodeArgs) {
  Ref Src = LoadSourceGPR(Op, Op->Src[0], Op->Flags);
  Ref Dest = LoadSourceGPR(Op, Op->Dest, Op->Flags);

-  uint64_t Shift = LoadConstantShift(Op, false);
+  uint64_t Shift = GetConstantShift(Op, false);
  const auto Size = GetSrcBitSize(Op);

  if (Shift != 0) {
@@ -1615,7 +1614,7 @@ void OpDispatchBuilder::ASHROp(OpcodeArgs, bool Immediate, bool SHR1Bit) {
  }

  if (Immediate) {
-    uint64_t Shift = LoadConstantShift(Op, SHR1Bit);
+    uint64_t Shift = GetConstantShift(Op, SHR1Bit);
    Ref Result = _Ashr(OpSize, Dest, Constant(Shift));

    CalculateFlags_SignShiftRightImmediate(OpSizeFromSrc(Op), Result, Dest, Shift);
@@ -1643,7 +1642,7 @@ void OpDispatchBuilder::RotateOp(OpcodeArgs, bool Left, bool IsImmediate, bool I

  ArithRef UnmaskedSrc;
  if (Is1Bit || IsImmediate) {
-    UnmaskedConst = LoadConstantShift(Op, Is1Bit);
+    UnmaskedConst = GetConstantShift(Op, Is1Bit);
    UnmaskedSrc = ARef(UnmaskedConst);
  } else {
    UnmaskedSrc = ARef(LoadSourceGPR(Op, Op->Src[1], Op->Flags, {.AllowUpperGarbage = true}));
@@ -3067,7 +3066,6 @@ void OpDispatchBuilder::SMSWOp(OpcodeArgs) {
                       (0U << 2) | ///< EM - Emulation
                       (1U << 1) | ///< MP - Monitor Coprocessor
                       (1U << 0)); ///< PE - Protection Enabled
-
  const auto OpAddr = X86Tables::DecodeFlags::GetOpAddr(Op->Flags, 0);
  if (Is64BitMode) {
    DstSize = OpAddr == X86Tables::DecodeFlags::FLAG_OPERAND_SIZE_LAST  ? OpSize::i16Bit :
@@ -4131,6 +4129,8 @@ void OpDispatchBuilder::CheckLegacySegmentRead(Ref NewNode, uint32_t SegmentReg)

  // Will set the telemetry value if NewNode is != 0
  _TelemetrySetValue(NewNode, TelemIndex);
+  // Telemetry will dirty flags, and user code does not expect LoadSource to clobber flags, fix that up here as this is an edge case.
+  CalculateDeferredFlags();
 #endif
 }

@@ -4169,6 +4169,8 @@ void OpDispatchBuilder::CheckLegacySegmentWrite(Ref NewNode, uint32_t SegmentReg

  // Will set the telemetry value if NewNode is != 0
  _TelemetrySetValue(NewNode, TelemIndex);
+  // Telemetry will dirty flags, and user code does not expect LoadSource to clobber flags, fix that up here as this is an edge case.
+  CalculateDeferredFlags();
 #endif
 }

@@ -4234,18 +4236,26 @@ AddressMode OpDispatchBuilder::DecodeAddress(const X86Tables::DecodedOp& Op, con
  } else if (Operand.IsGPRDirect()) {
    A.Base = LoadGPRRegister(Operand.Data.GPR.GPR, GPRSize);
    A.NonTSO |= IsNonTSOReg(AccessType, Operand.Data.GPR.GPR);
-  } else if (Operand.IsGPRIndirect()) {
+  } else if (Operand.IsGPRIndirect() || Operand.IsGPRIndirectRelocation()) {
    A.Base = LoadGPRRegister(Operand.Data.GPRIndirect.GPR, GPRSize);
-    A.Offset = Operand.Data.GPRIndirect.Displacement;
+    if (Operand.IsGPRIndirectRelocation()) {
+      A.Base = Add(GPRSize, _EntrypointOffset(GPRSize, Operand.Data.GPRIndirect.Displacement), A.Base);
+    } else {
+      A.Offset = static_cast<int32_t>(Operand.Data.GPRIndirect.Displacement);
+    }
    A.NonTSO |= IsNonTSOReg(AccessType, Operand.Data.GPRIndirect.GPR);
-  } else if (Operand.IsRIPRelative()) {
+  } else if (Operand.IsRIPRelative() || Operand.IsRIPRelativeRelocation()) {
    if (Is64BitMode) {
-      A.Base = GetRelocatedPC(Op, Operand.Data.RIPLiteral.Value.s);
+      A.Base = GetRelocatedPC(Op, static_cast<int32_t>(Operand.Data.RIPLiteral.Value));
    } else {
      // 32bit this isn't RIP relative but instead absolute
-      A.Offset = Operand.Data.RIPLiteral.Value.u;
+      if (Operand.IsRIPRelativeRelocation()) {
+        A.Base = _EntrypointOffset(GPRSize, Operand.Data.RIPLiteral.Value);
+      } else {
+        A.Offset = Operand.Data.RIPLiteral.Value;
+      }
    }
-  } else if (Operand.IsSIB()) {
+  } else if (Operand.IsSIB() || Operand.IsSIBRelocation()) {
    const bool IsVSIB = IsLoad && ((Op->Flags & X86Tables::DecodeFlags::FLAG_VSIB_BYTE) != 0);

    if (Operand.Data.SIB.Base != FEXCore::X86State::REG_INVALID) {
@@ -4266,8 +4276,20 @@ AddressMode OpDispatchBuilder::DecodeAddress(const X86Tables::DecodedOp& Op, con
      A.IndexScale = Operand.Data.SIB.Scale;
    }

-    A.Offset = Operand.Data.SIB.Offset;
+    if (Operand.IsSIBRelocation()) {
+      auto EPOffset = _EntrypointOffset(GPRSize, Operand.Data.SIB.Offset);
+      if (A.Base) {
+        A.Base = Add(GPRSize, EPOffset, A.Base);
+      } else {
+        A.Base = EPOffset;
+      }
+    } else {
+      A.Offset = static_cast<int32_t>(Operand.Data.SIB.Offset);
+    }
+
    A.NonTSO |= IsNonTSOReg(AccessType, Operand.Data.SIB.Base) || IsNonTSOReg(AccessType, Operand.Data.SIB.Index);
+  } else if (Operand.IsLiteralRelocation()) {
+    A.Base = _EntrypointOffset(GPRSize, Operand.Data.LiteralRelocation.EntrypointOffset);
  } else {
    LOGMAN_MSG_A_FMT("Unknown Src Type: {}\n", Operand.Type);
  }
@@ -4500,20 +4522,6 @@ void OpDispatchBuilder::MOVGPROp(OpcodeArgs, uint32_t SrcIndex) {
  StoreResultGPR(Op, Src, OpSize::i8Bit);
 }

-void OpDispatchBuilder::MOVGPRImmediate(OpcodeArgs) {
-  Ref Src {};
-  if (Op->Src[0].Data.Literal.Size <= 4) {
-    Src = LoadSourceGPR(Op, Op->Src[0], Op->Flags, {.Align = OpSize::i8Bit, .AllowUpperGarbage = true});
-  } else {
-    // 8-byte literal is special cased.
-    const uint64_t Lower = Op->Src[0].Literal();
-    const uint64_t Upper = Op->Src[1].Literal();
-    const uint64_t Combined = (Upper << 32) | Lower;
-    Src = _Constant(Combined);
-  }
-  StoreResultGPR(Op, Src, OpSize::i8Bit);
-}
-
 void OpDispatchBuilder::MOVGPRNTOp(OpcodeArgs) {
  Ref Src = LoadSourceGPR(Op, Op->Src[0], Op->Flags, {.Align = OpSize::i8Bit});
  StoreResultGPR(Op, Src, OpSize::i8Bit, MemoryAccessType::STREAM);
@@ -4658,7 +4666,7 @@ void OpDispatchBuilder::INTOp(OpcodeArgs) {
    }
 #endif

-#ifdef _M_ARM_64EC
+#ifdef ARCHITECTURE_arm64ec
    // This is used when QueryPerformanceCounter is called on recent Windows versions, it causes CNTVCT to be written into RAX.
    constexpr uint8_t GET_CNTVCT_LITERAL = 0x81;
    if (Literal == GET_CNTVCT_LITERAL) {
@@ -27,6 +27,42 @@
 #include <xxhash.h>

 namespace FEXCore::IR {
+enum class VectorCompareType {
+  // SSE comparisons.
+  EQ_OQ = 0,
+  LT_OS = 1,
+  LE_OS = 2,
+  UNORD_Q = 3,
+  NEQ_UQ = 4,
+  NLT_US = 5,
+  NLE_US = 6,
+  ORD_Q = 7,
+  // AVX-only comparisons.
+  EQ_UQ = 8,
+  NGE_US = 9,
+  NGT_US = 10,
+  FALSE_OQ = 11,
+  NEQ_OQ = 12,
+  GE_OS = 13,
+  GT_OS = 14,
+  TRUE_UQ = 15,
+  EQ_OS = 16,
+  LT_OQ = 17,
+  LE_OQ = 18,
+  UNORD_S = 19,
+  NEQ_US = 20,
+  NLT_UQ = 21,
+  NLE_UQ = 22,
+  ORD_S = 23,
+  EQ_US = 24,
+  NGE_UQ = 25,
+  NGT_UQ = 26,
+  FALSE_OS = 27,
+  NEQ_OS = 28,
+  GE_OQ = 29,
+  GT_OQ = 30,
+  TRUE_US = 31,
+};

 enum class MemoryAccessType {
  // Choose TSO or Non-TSO depending on access type
@@ -319,7 +355,6 @@ public:

  void UnhandledOp(OpcodeArgs);
  void MOVGPROp(OpcodeArgs, uint32_t SrcIndex);
-  void MOVGPRImmediate(OpcodeArgs);
  void MOVGPRNTOp(OpcodeArgs);
  void MOVVectorAlignedOp(OpcodeArgs);
  void MOVVectorUnalignedOp(OpcodeArgs);
@@ -357,6 +392,7 @@ public:
  void CALLFARIndirectOp(OpcodeArgs);
  void RETFARIndirectOp(OpcodeArgs);
  void TESTOp(OpcodeArgs, uint32_t SrcIndex);
+  void ARPLOp(OpcodeArgs);
  void MOVSXDOp(OpcodeArgs);
  void MOVSXOp(OpcodeArgs);
  void MOVZXOp(OpcodeArgs);
@@ -373,7 +409,7 @@ public:
  void CMOVOp(OpcodeArgs);
  void CPUIDOp(OpcodeArgs);
  void XGetBVOp(OpcodeArgs);
-  uint32_t LoadConstantShift(X86Tables::DecodedOp Op, bool Is1Bit);
+  uint32_t GetConstantShift(X86Tables::DecodedOp Op, bool Is1Bit);
  void SHLOp(OpcodeArgs);
  void SHLImmediateOp(OpcodeArgs, bool SHL1Bit);
  void SHROp(OpcodeArgs);
@@ -1544,7 +1580,7 @@ private:
  [[nodiscard]]
  static bool IsOperandMem(const X86Tables::DecodedOperand& Operand, bool Load) {
    // Literals are immediates as sources but memory addresses as destinations.
-    return !(Load && Operand.IsLiteral()) && !Operand.IsGPR();
+    return !(Load && (Operand.IsLiteral() || Operand.IsLiteralRelocation())) && !Operand.IsGPR();
  }

  [[nodiscard]]
@@ -2070,6 +2106,12 @@ private:
    RegCache.Written |= Bit;
  }

+  void InvalidateHighAVXRegisters() {
+    for (size_t i = 0; i < 16; ++i) {
+      InvalidateReg(AVXHigh0Index + i);
+    }
+  }
+
  void StoreRegister(uint8_t Reg, bool FPR, Ref Value) {
    StoreContext(Reg + (FPR ? FPR0Index : GPR0Index), Value);
  }
@@ -52,7 +52,8 @@ OpDispatchBuilder::RefPair OpDispatchBuilder::AVX128_LoadSource_WithOpSize(
 OpDispatchBuilder::RefVSIB
 OpDispatchBuilder::AVX128_LoadVSIB(const X86Tables::DecodedOp& Op, const X86Tables::DecodedOperand& Operand, uint32_t Flags, bool NeedsHigh) {
  const bool IsVSIB = (Op->Flags & X86Tables::DecodeFlags::FLAG_VSIB_BYTE) != 0;
-  LOGMAN_THROW_A_FMT(Operand.IsSIB() && IsVSIB, "Trying to load VSIB for something that isn't the correct type!");
+  LOGMAN_THROW_A_FMT((Operand.IsSIB() || Operand.IsSIBRelocation()) && IsVSIB, "Trying to load VSIB for something that isn't the correct "
+                                                                               "type!");

  // VSIB is a very special case which has a ton of encoded data.
  // Get it in a format we can reason about.
@@ -64,13 +65,25 @@ OpDispatchBuilder::AVX128_LoadVSIB(const X86Tables::DecodedOp& Op, const X86Tabl
                     "Base must be a GPR.");
  const auto Index_XMM_gpr = Index_gpr - X86State::REG_XMM_0;

-  return {
+  OpDispatchBuilder::RefVSIB A {
    .Low = AVX128_LoadXMMRegister(Index_XMM_gpr, false),
    .High = NeedsHigh ? AVX128_LoadXMMRegister(Index_XMM_gpr, true) : Invalid(),
    .BaseAddr = Base_gpr != FEXCore::X86State::REG_INVALID ? LoadGPRRegister(Base_gpr, OpSize::i64Bit, 0, false) : nullptr,
-    .Displacement = Operand.Data.SIB.Offset,
    .Scale = Operand.Data.SIB.Scale,
  };
+
+  if (Operand.IsSIBRelocation()) {
+    auto EPOffset = _EntrypointOffset(OpSize::i64Bit, Operand.Data.SIB.Offset);
+    if (A.BaseAddr) {
+      A.BaseAddr = Add(OpSize::i64Bit, EPOffset, A.BaseAddr);
+    } else {
+      A.BaseAddr = EPOffset;
+    }
+  } else {
+    A.Displacement = static_cast<int32_t>(Operand.Data.SIB.Offset);
+  }
+
+  return A;
 }

 void OpDispatchBuilder::AVX128_StoreResult_WithOpSize(FEXCore::X86Tables::DecodedOp Op, const FEXCore::X86Tables::DecodedOperand& Operand,
@@ -327,16 +340,12 @@ void OpDispatchBuilder::AVX128_VZERO(OpcodeArgs) {
      AVX128_StoreXMMRegister(i, ZeroVector, false);
    }

-    // More efficient for non-SRA upper-halves to use a cached constant and store directly.
-    for (uint32_t i = 0; i < NumRegs; i++) {
-      AVX128_StoreXMMRegister(i, ZeroVector, true);
-    }
+    InvalidateHighAVXRegisters();
+    _ContextClear(offsetof(FEXCore::Core::CPUState, avx_high), sizeof(FEXCore::Core::CPUState::avx_high[0]) * NumRegs);
  } else {
    // Likewise, VZEROUPPER will only ever zero only up to the first 16 registers
-    const auto ZeroVector = LoadZeroVector(OpSize::i128Bit);
-    for (uint32_t i = 0; i < NumRegs; i++) {
-      AVX128_StoreXMMRegister(i, ZeroVector, true);
-    }
+    InvalidateHighAVXRegisters();
+    _ContextClear(offsetof(FEXCore::Core::CPUState, avx_high), sizeof(FEXCore::Core::CPUState::avx_high[0]) * NumRegs);
  }
 }

@@ -663,10 +672,10 @@ void OpDispatchBuilder::AVX128_VFCMP(OpcodeArgs, IR::OpSize ElementSize) {

  struct {
    FEXCore::X86Tables::DecodedOp Op;
-    uint8_t CompType {};
+    uint32_t CompType {};
  } Capture {
    .Op = Op,
-    .CompType = CompType,
+    .CompType = CompType & 0b11111u,
  };

  AVX128_VectorBinaryImpl(Op, OpSizeFromSrc(Op), ElementSize, [this, &Capture](IR::OpSize _ElementSize, Ref Src1, Ref Src2) {
@@ -692,7 +701,7 @@ void OpDispatchBuilder::AVX128_InsertScalarFCMP(OpcodeArgs, IR::OpSize ElementSi
  const uint8_t CompType = Op->Src[2].Literal();

  RefPair Result {};
-  Result.Low = InsertScalarFCMPOpImpl(OpSize::i128Bit, OpSize::i128Bit, ElementSize, Src1.Low, Src2.Low, CompType, false);
+  Result.Low = InsertScalarFCMPOpImpl(OpSize::i128Bit, OpSize::i128Bit, ElementSize, Src1.Low, Src2.Low, CompType & 0b11111, false);
  Result.High = LoadZeroVector(OpSize::i128Bit);
  AVX128_StoreResult_WithOpSize(Op, Op->Dest, Result);
 }
@@ -53,7 +53,7 @@ constexpr inline DispatchTableEntry OpDispatch_BaseOpTable[] = {
  {0xAA, 2, &OpDispatchBuilder::STOSOp},
  {0xAC, 2, &OpDispatchBuilder::LODSOp},
  {0xAE, 2, &OpDispatchBuilder::SCASOp},
-  {0xB0, 16, &OpDispatchBuilder::Bind<&OpDispatchBuilder::MOVGPRImmediate>},
+  {0xB0, 16, &OpDispatchBuilder::Bind<&OpDispatchBuilder::MOVGPROp, 0>},
  {0xC2, 2, &OpDispatchBuilder::RETOp},
  {0xC8, 1, &OpDispatchBuilder::EnterOp},
  {0xC9, 1, &OpDispatchBuilder::LEAVEOp},
@@ -562,31 +562,90 @@ template void OpDispatchBuilder::AVXInsertScalarRound<OpSize::i64Bit>(OpcodeArgs

 Ref OpDispatchBuilder::InsertScalarFCMPOpImpl(OpSize Size, IR::OpSize OpDstSize, IR::OpSize ElementSize, Ref Src1, Ref Src2,
                                              uint8_t CompType, bool ZeroUpperBits) {
-  switch (CompType & 7) {
-  case 0x0: // EQ
-    return _VFCMPScalarInsert(Size, ElementSize, Src1, Src2, FloatCompareOp::EQ, ZeroUpperBits);
-  case 0x1: // LT, GT(Swapped operand)
-    return _VFCMPScalarInsert(Size, ElementSize, Src1, Src2, FloatCompareOp::LT, ZeroUpperBits);
-  case 0x2: // LE, GE(Swapped operand)
-    return _VFCMPScalarInsert(Size, ElementSize, Src1, Src2, FloatCompareOp::LE, ZeroUpperBits);
-  case 0x3: // Unordered
-    return _VFCMPScalarInsert(Size, ElementSize, Src1, Src2, FloatCompareOp::UNO, ZeroUpperBits);
-  case 0x4: // NEQ
-    return _VFCMPScalarInsert(Size, ElementSize, Src1, Src2, FloatCompareOp::NEQ, ZeroUpperBits);
-  case 0x5: { // NLT, NGT(Swapped operand)
+  switch (static_cast<VectorCompareType>(CompType)) {
+  case VectorCompareType::EQ_OQ:
+  case VectorCompareType::EQ_OS: return _VFCMPScalarInsert(Size, ElementSize, Src1, Src2, FloatCompareOp::EQ, ZeroUpperBits);
+  case VectorCompareType::LT_OS: // GT(Swapped operand)
+  case VectorCompareType::LT_OQ: return _VFCMPScalarInsert(Size, ElementSize, Src1, Src2, FloatCompareOp::LT, ZeroUpperBits);
+  case VectorCompareType::LE_OS: // GE(Swapped operand)
+  case VectorCompareType::LE_OQ: return _VFCMPScalarInsert(Size, ElementSize, Src1, Src2, FloatCompareOp::LE, ZeroUpperBits);
+  case VectorCompareType::UNORD_Q:
+  case VectorCompareType::UNORD_S: return _VFCMPScalarInsert(Size, ElementSize, Src1, Src2, FloatCompareOp::UNO, ZeroUpperBits);
+  case VectorCompareType::NEQ_UQ:
+  case VectorCompareType::NEQ_US: return _VFCMPScalarInsert(Size, ElementSize, Src1, Src2, FloatCompareOp::NEQ, ZeroUpperBits);
+  case VectorCompareType::NLT_US: // NGT(Swapped operand)
+  case VectorCompareType::NLT_UQ: {
    Ref Result = _VFCMPLT(ElementSize, ElementSize, Src1, Src2);
    Result = _VNot(ElementSize, ElementSize, Result);
    // Insert the lower bits
    return _VInsElement(OpDstSize, ElementSize, 0, 0, Src1, Result);
  }
-  case 0x6: { // NLE, NGE(Swapped operand)
+  case VectorCompareType::NLE_US: // NGE(Swapped operand)
+  case VectorCompareType::NLE_UQ: {
    Ref Result = _VFCMPLE(ElementSize, ElementSize, Src1, Src2);
    Result = _VNot(ElementSize, ElementSize, Result);
    // Insert the lower bits
    return _VInsElement(OpDstSize, ElementSize, 0, 0, Src1, Result);
  }
-  case 0x7: // Ordered
-    return _VFCMPScalarInsert(Size, ElementSize, Src1, Src2, FloatCompareOp::ORD, ZeroUpperBits);
+  case VectorCompareType::ORD_Q:
+  case VectorCompareType::ORD_S: return _VFCMPScalarInsert(Size, ElementSize, Src1, Src2, FloatCompareOp::ORD, ZeroUpperBits);
+  case VectorCompareType::NGT_UQ:
+  case VectorCompareType::NGT_US: {
+    Ref Result = _VFCMPLT(ElementSize, ElementSize, Src2, Src1);
+    Result = _VNot(ElementSize, ElementSize, Result);
+    // Insert the lower bits
+    return _VInsElement(OpDstSize, ElementSize, 0, 0, Src1, Result);
+  }
+  case VectorCompareType::NGE_UQ:
+  case VectorCompareType::NGE_US: {
+    Ref Result = _VFCMPLE(ElementSize, ElementSize, Src2, Src1);
+    Result = _VNot(ElementSize, ElementSize, Result);
+    // Insert the lower bits
+    return _VInsElement(OpDstSize, ElementSize, 0, 0, Src1, Result);
+  }
+  case VectorCompareType::GT_OQ:
+  case VectorCompareType::GT_OS: {
+    Ref Result = _VFCMPLT(ElementSize, ElementSize, Src2, Src1);
+    // Insert the lower bits
+    return _VInsElement(OpDstSize, ElementSize, 0, 0, Src1, Result);
+  }
+  case VectorCompareType::GE_OQ:
+  case VectorCompareType::GE_OS: {
+    Ref Result = _VFCMPLE(ElementSize, ElementSize, Src2, Src1);
+    // Insert the lower bits
+    return _VInsElement(OpDstSize, ElementSize, 0, 0, Src1, Result);
+  }
+  case VectorCompareType::EQ_UQ:
+  case VectorCompareType::EQ_US: {
+    // If either of the sources are unordered, then returns true.
+    Ref Src1_U = _VFCMPEQ(Size, ElementSize, Src1, Src1);
+    Ref Src2_U = _VFCMPEQ(Size, ElementSize, Src2, Src2);
+    auto Ordered = _VAnd(Size, ElementSize, Src1_U, Src2_U);
+
+    Ref Compare_Ordered = _VFCMPEQ(Size, ElementSize, Src1, Src2);
+    Ref Result = _VOrn(Size, ElementSize, Compare_Ordered, Ordered);
+
+    // Insert the lower bits
+    return _VInsElement(OpDstSize, ElementSize, 0, 0, Src1, Result);
+  }
+  case VectorCompareType::NEQ_OQ:
+  case VectorCompareType::NEQ_OS: {
+    // If either of the sources are unordered, then returns false.
+    Ref Src1_U = _VFCMPEQ(Size, ElementSize, Src1, Src1);
+    Ref Src2_U = _VFCMPEQ(Size, ElementSize, Src2, Src2);
+
+    Ref Compare_Ordered = _VFCMPEQ(Size, ElementSize, Src1, Src2);
+    Ref Result = _VAndn(Size, ElementSize, Src1_U, Compare_Ordered);
+    Result = _VAnd(Size, ElementSize, Result, Src2_U);
+
+    // Insert the lower bits
+    return _VInsElement(OpDstSize, ElementSize, 0, 0, Src1, Result);
+  }
+  case VectorCompareType::FALSE_OQ:
+  case VectorCompareType::FALSE_OS: return _VInsElement(OpDstSize, ElementSize, 0, 0, Src1, LoadZeroVector(OpSize::i128Bit));
+  case VectorCompareType::TRUE_UQ:
+  case VectorCompareType::TRUE_US:
+    return _VInsElement(OpDstSize, ElementSize, 0, 0, Src1, _VectorImm(OpSize::i128Bit, OpSize::i8Bit, -1, 0));
  }
  FEX_UNREACHABLE;
 }
@@ -600,7 +659,7 @@ void OpDispatchBuilder::InsertScalarFCMPOp(OpcodeArgs) {
  Ref Src1 = LoadSourceFPR_WithOpSize(Op, Op->Dest, DstSize, Op->Flags);
  Ref Src2 = LoadSourceFPR_WithOpSize(Op, Op->Src[0], SrcSize, Op->Flags, {.AllowUpperGarbage = true});

-  Ref Result = InsertScalarFCMPOpImpl(DstSize, OpSizeFromDst(Op), ElementSize, Src1, Src2, CompType, false);
+  Ref Result = InsertScalarFCMPOpImpl(DstSize, OpSizeFromDst(Op), ElementSize, Src1, Src2, CompType & 0b111, false);
  StoreResultFPR_WithOpSize(Op, Op->Dest, Result, DstSize);
 }

@@ -619,7 +678,7 @@ void OpDispatchBuilder::AVXInsertScalarFCMPOp(OpcodeArgs) {
  Ref Src1 = LoadSourceFPR_WithOpSize(Op, Op->Src[0], DstSize, Op->Flags);
  Ref Src2 = LoadSourceFPR_WithOpSize(Op, Op->Src[1], SrcSize, Op->Flags, {.AllowUpperGarbage = true});

-  Ref Result = InsertScalarFCMPOpImpl(DstSize, OpSizeFromDst(Op), ElementSize, Src1, Src2, CompType, true);
+  Ref Result = InsertScalarFCMPOpImpl(DstSize, OpSizeFromDst(Op), ElementSize, Src1, Src2, CompType & 0b11111, true);
  StoreResultFPR_WithOpSize(Op, Op->Dest, Result, DstSize);
 }

@@ -2424,26 +2483,67 @@ void OpDispatchBuilder::MOVBetweenGPR_FPR(OpcodeArgs, VectorOpType VectorType) {
 }

 Ref OpDispatchBuilder::VFCMPOpImpl(OpSize Size, IR::OpSize ElementSize, Ref Src1, Ref Src2, uint8_t CompType) {
-  Ref Result {};
-  switch (CompType & 0x7) {
-  case 0x0: // EQ
-    return _VFCMPEQ(Size, ElementSize, Src1, Src2);
-  case 0x1: // LT, GT(Swapped operand)
-    return _VFCMPLT(Size, ElementSize, Src1, Src2);
-  case 0x2: // LE, GE(Swapped operand)
-    return _VFCMPLE(Size, ElementSize, Src1, Src2);
-  case 0x3: // Unordered
-    return _VFCMPUNO(Size, ElementSize, Src1, Src2);
-  case 0x4: // NEQ
-    return _VFCMPNEQ(Size, ElementSize, Src1, Src2);
-  case 0x5: // NLT, NGT(Swapped operand)
-    Result = _VFCMPLT(Size, ElementSize, Src1, Src2);
+  switch (static_cast<VectorCompareType>(CompType)) {
+  case VectorCompareType::EQ_OQ:
+  case VectorCompareType::EQ_OS: return _VFCMPEQ(Size, ElementSize, Src1, Src2);
+  case VectorCompareType::LT_OS: // GT(Swapped operand)
+  case VectorCompareType::LT_OQ: return _VFCMPLT(Size, ElementSize, Src1, Src2);
+  case VectorCompareType::LE_OS: // GE(Swapped operand)
+  case VectorCompareType::LE_OQ: return _VFCMPLE(Size, ElementSize, Src1, Src2);
+  case VectorCompareType::UNORD_Q:
+  case VectorCompareType::UNORD_S: return _VFCMPUNO(Size, ElementSize, Src1, Src2);
+  case VectorCompareType::NEQ_UQ:
+  case VectorCompareType::NEQ_US: return _VFCMPNEQ(Size, ElementSize, Src1, Src2);
+  case VectorCompareType::NLT_US: // NGT(Swapped operand)
+  case VectorCompareType::NLT_UQ: {
+    Ref Result = _VFCMPLT(Size, ElementSize, Src1, Src2);
    return _VNot(Size, ElementSize, Result);
-  case 0x6: // NLE, NGE(Swapped operand)
-    Result = _VFCMPLE(Size, ElementSize, Src1, Src2);
+  }
+  case VectorCompareType::NLE_US: // NGE(Swapped operand)
+  case VectorCompareType::NLE_UQ: {
+    Ref Result = _VFCMPLE(Size, ElementSize, Src1, Src2);
    return _VNot(Size, ElementSize, Result);
-  case 0x7: // Ordered
-    return _VFCMPORD(Size, ElementSize, Src1, Src2);
+  }
+  case VectorCompareType::ORD_Q:
+  case VectorCompareType::ORD_S: return _VFCMPORD(Size, ElementSize, Src1, Src2);
+  case VectorCompareType::NGT_UQ:
+  case VectorCompareType::NGT_US: {
+    Ref Result = _VFCMPLT(Size, ElementSize, Src2, Src1);
+    return _VNot(Size, ElementSize, Result);
+  }
+  case VectorCompareType::NGE_UQ:
+  case VectorCompareType::NGE_US: {
+    Ref Result = _VFCMPLE(Size, ElementSize, Src2, Src1);
+    return _VNot(Size, ElementSize, Result);
+  }
+  case VectorCompareType::GT_OQ:
+  case VectorCompareType::GT_OS: return _VFCMPLT(Size, ElementSize, Src2, Src1);
+  case VectorCompareType::GE_OQ:
+  case VectorCompareType::GE_OS: return _VFCMPLE(Size, ElementSize, Src2, Src1);
+  case VectorCompareType::EQ_UQ:
+  case VectorCompareType::EQ_US: {
+    // If either of the sources are unordered, then returns true.
+    Ref Src1_U = _VFCMPEQ(Size, ElementSize, Src1, Src1);
+    Ref Src2_U = _VFCMPEQ(Size, ElementSize, Src2, Src2);
+    auto Ordered = _VAnd(Size, ElementSize, Src1_U, Src2_U);
+
+    Ref Compare_Ordered = _VFCMPEQ(Size, ElementSize, Src1, Src2);
+    return _VOrn(Size, ElementSize, Compare_Ordered, Ordered);
+  }
+  case VectorCompareType::NEQ_OQ:
+  case VectorCompareType::NEQ_OS: {
+    // If either of the sources are unordered, then returns false.
+    Ref Src1_U = _VFCMPEQ(Size, ElementSize, Src1, Src1);
+    Ref Src2_U = _VFCMPEQ(Size, ElementSize, Src2, Src2);
+
+    Ref Compare_Ordered = _VFCMPEQ(Size, ElementSize, Src1, Src2);
+    Ref Result = _VAndn(Size, ElementSize, Src1_U, Compare_Ordered);
+    return _VAnd(Size, ElementSize, Result, Src2_U);
+  }
+  case VectorCompareType::FALSE_OQ:
+  case VectorCompareType::FALSE_OS: return LoadZeroVector(Size);
+  case VectorCompareType::TRUE_UQ:
+  case VectorCompareType::TRUE_US: return _VectorImm(Size, OpSize::i8Bit, -1, 0);
  }
  FEX_UNREACHABLE;
 }
@@ -2459,7 +2559,7 @@ void OpDispatchBuilder::VFCMPOp(OpcodeArgs) {
  Ref Dest = LoadSourceFPR_WithOpSize(Op, Op->Dest, DstSize, Op->Flags);
  const uint8_t CompType = Op->Src[1].Data.Literal.Value;

-  Ref Result = VFCMPOpImpl(OpSizeFromSrc(Op), ElementSize, Dest, Src, CompType);
+  Ref Result = VFCMPOpImpl(OpSizeFromSrc(Op), ElementSize, Dest, Src, CompType & 0b111);

  StoreResultFPR(Op, Result);
 }
@@ -2477,7 +2577,7 @@ void OpDispatchBuilder::AVXVFCMPOp(OpcodeArgs) {

  Ref Src1 = LoadSourceFPR_WithOpSize(Op, Op->Src[0], DstSize, Op->Flags);
  Ref Src2 = LoadSourceFPR_WithOpSize(Op, Op->Src[1], SrcSize, Op->Flags);
-  Ref Result = VFCMPOpImpl(OpSizeFromSrc(Op), ElementSize, Src1, Src2, CompType);
+  Ref Result = VFCMPOpImpl(OpSizeFromSrc(Op), ElementSize, Src1, Src2, CompType & 0b11111);

  StoreResultFPR(Op, Result);
 }
@@ -5017,7 +5117,8 @@ void OpDispatchBuilder::VFMAddSubImpl(OpcodeArgs, bool AddSub, uint8_t Src1Idx,

 OpDispatchBuilder::RefVSIB OpDispatchBuilder::LoadVSIB(const X86Tables::DecodedOp& Op, const X86Tables::DecodedOperand& Operand, uint32_t Flags) {
  const bool IsVSIB = (Op->Flags & X86Tables::DecodeFlags::FLAG_VSIB_BYTE) != 0;
-  LOGMAN_THROW_A_FMT(Operand.IsSIB() && IsVSIB, "Trying to load VSIB for something that isn't the correct type!");
+  LOGMAN_THROW_A_FMT((Operand.IsSIB() || Operand.IsSIBRelocation()) && IsVSIB, "Trying to load VSIB for something that isn't the correct "
+                                                                               "type!");

  // VSIB is a very special case which has a ton of encoded data.
  // Get it in a format we can reason about.
@@ -5029,12 +5130,24 @@ OpDispatchBuilder::RefVSIB OpDispatchBuilder::LoadVSIB(const X86Tables::DecodedO
                     "Base must be a GPR.");
  const auto Index_XMM_gpr = Index_gpr - X86State::REG_XMM_0;

-  return {
+  OpDispatchBuilder::RefVSIB A {
    .Low = LoadXMMRegister(Index_XMM_gpr),
    .BaseAddr = Base_gpr != FEXCore::X86State::REG_INVALID ? LoadGPRRegister(Base_gpr, OpSize::i64Bit, 0, false) : nullptr,
-    .Displacement = Operand.Data.SIB.Offset,
    .Scale = Operand.Data.SIB.Scale,
  };
+
+  if (Operand.IsSIBRelocation()) {
+    auto EPOffset = _EntrypointOffset(OpSize::i64Bit, Operand.Data.SIB.Offset);
+    if (A.BaseAddr) {
+      A.BaseAddr = Add(OpSize::i64Bit, EPOffset, A.BaseAddr);
+    } else {
+      A.BaseAddr = EPOffset;
+    }
+  } else {
+    A.Displacement = static_cast<int32_t>(Operand.Data.SIB.Offset);
+  }
+
+  return A;
 }

 template<OpSize AddrElementSize>
@@ -124,7 +124,7 @@ constexpr std::array<X86InstInfo[2], ENTRY_MAX> Primary_ArchSelect_LUT = {{
  },
  // ENTRY_63
  {
-    {"ARPL",   TYPE_INVALID, FLAGS_NONE, 0, { .OpDispatch = nullptr } },
+    {"ARPL",   TYPE_INST, GenFlagsSameSize(SIZE_16BIT) | FLAGS_MODRM | FLAGS_SF_MOD_DST, 0, { .OpDispatch = &IR::OpDispatchBuilder::ARPLOp } },
    {"MOVSXD", TYPE_INST, GenFlagsDstSize(SIZE_64BIT) | FLAGS_MODRM, 0, { .OpDispatch = &IR::OpDispatchBuilder::MOVSXDOp } },
  },
  // ENTRY_9A
@@ -436,4 +436,3 @@ const std::array<X86InstInfo, MAX_PRIMARY_TABLE_SIZE> BaseOps = []() consteval {
 }();

 }
-
@@ -24,92 +24,98 @@ namespace FEXCore::X86Tables {
 struct X86InstInfo;

 namespace DecodeFlags {
-constexpr uint32_t FLAG_OPERAND_SIZE  = (1 << 0);
-constexpr uint32_t FLAG_ADDRESS_SIZE  = (1 << 1);
-constexpr uint32_t FLAG_LOCK          = (1 << 2);
-constexpr uint32_t FLAG_LEGACY_PREFIX = (1 << 3);
-constexpr uint32_t FLAG_REX_PREFIX    = (1 << 4);
-constexpr uint32_t FLAG_VSIB_BYTE     = (1 << 5);
-constexpr uint32_t FLAG_OPTION_AVX_W  = (1 << 6);
-constexpr uint32_t FLAG_REX_WIDENING  = (1 << 7);
-constexpr uint32_t FLAG_REX_XGPR_B    = (1 << 8);
-constexpr uint32_t FLAG_REX_XGPR_X    = (1 << 9);
-constexpr uint32_t FLAG_REX_XGPR_R    = (1 << 10);
-constexpr uint32_t FLAG_NO_PREFIX     = (0b000 << 11);
-constexpr uint32_t FLAG_ES_PREFIX     = (0b001 << 11);
-constexpr uint32_t FLAG_CS_PREFIX     = (0b010 << 11);
-constexpr uint32_t FLAG_SS_PREFIX     = (0b011 << 11);
-constexpr uint32_t FLAG_DS_PREFIX     = (0b100 << 11);
-constexpr uint32_t FLAG_FS_PREFIX     = (0b101 << 11);
-constexpr uint32_t FLAG_GS_PREFIX     = (0b110 << 11);
-constexpr uint32_t FLAG_SEGMENTS      = (0b111 << 11);
-constexpr uint32_t FLAG_FORCE_TSO     = (1 << 14);
-constexpr uint32_t FLAG_DECODED_MODRM = (1 << 15);
-constexpr uint32_t FLAG_DECODED_SIB   = (1 << 16);
-constexpr uint32_t FLAG_REP_PREFIX    = (1 << 17);
-constexpr uint32_t FLAG_REPNE_PREFIX  = (1 << 18);
-// Size flags
-constexpr uint32_t FLAG_SIZE_DST_OFF = 19;
-constexpr uint32_t FLAG_SIZE_SRC_OFF = FLAG_SIZE_DST_OFF + 3;
-constexpr uint32_t SIZE_MASK         = 0b111;
-constexpr uint32_t SIZE_DEF          = 0b000; // This should be invalid past decoding
-constexpr uint32_t SIZE_8BIT         = 0b001;
-constexpr uint32_t SIZE_16BIT        = 0b010;
-constexpr uint32_t SIZE_32BIT        = 0b011;
-constexpr uint32_t SIZE_64BIT        = 0b100;
-constexpr uint32_t SIZE_128BIT       = 0b101;
-constexpr uint32_t SIZE_256BIT       = 0b110;
+  constexpr uint32_t FLAG_OPERAND_SIZE = (1 << 0);
+  constexpr uint32_t FLAG_ADDRESS_SIZE = (1 << 1);
+  constexpr uint32_t FLAG_LOCK = (1 << 2);
+  constexpr uint32_t FLAG_LEGACY_PREFIX = (1 << 3);
+  constexpr uint32_t FLAG_REX_PREFIX = (1 << 4);
+  constexpr uint32_t FLAG_VSIB_BYTE = (1 << 5);
+  constexpr uint32_t FLAG_OPTION_AVX_W = (1 << 6);
+  constexpr uint32_t FLAG_REX_WIDENING = (1 << 7);
+  constexpr uint32_t FLAG_REX_XGPR_B = (1 << 8);
+  constexpr uint32_t FLAG_REX_XGPR_X = (1 << 9);
+  constexpr uint32_t FLAG_REX_XGPR_R = (1 << 10);
+  constexpr uint32_t FLAG_NO_PREFIX = (0b000 << 11);
+  constexpr uint32_t FLAG_ES_PREFIX = (0b001 << 11);
+  constexpr uint32_t FLAG_CS_PREFIX = (0b010 << 11);
+  constexpr uint32_t FLAG_SS_PREFIX = (0b011 << 11);
+  constexpr uint32_t FLAG_DS_PREFIX = (0b100 << 11);
+  constexpr uint32_t FLAG_FS_PREFIX = (0b101 << 11);
+  constexpr uint32_t FLAG_GS_PREFIX = (0b110 << 11);
+  constexpr uint32_t FLAG_SEGMENTS = (0b111 << 11);
+  constexpr uint32_t FLAG_FORCE_TSO = (1 << 14);
+  constexpr uint32_t FLAG_DECODED_MODRM = (1 << 15);
+  constexpr uint32_t FLAG_DECODED_SIB = (1 << 16);
+  constexpr uint32_t FLAG_REP_PREFIX = (1 << 17);
+  constexpr uint32_t FLAG_REPNE_PREFIX = (1 << 18);
+  // Size flags
+  constexpr uint32_t FLAG_SIZE_DST_OFF = 19;
+  constexpr uint32_t FLAG_SIZE_SRC_OFF = FLAG_SIZE_DST_OFF + 3;
+  constexpr uint32_t SIZE_MASK = 0b111;
+  constexpr uint32_t SIZE_DEF = 0b000; // This should be invalid past decoding
+  constexpr uint32_t SIZE_8BIT = 0b001;
+  constexpr uint32_t SIZE_16BIT = 0b010;
+  constexpr uint32_t SIZE_32BIT = 0b011;
+  constexpr uint32_t SIZE_64BIT = 0b100;
+  constexpr uint32_t SIZE_128BIT = 0b101;
+  constexpr uint32_t SIZE_256BIT = 0b110;

-constexpr uint32_t FLAG_OPADDR_OFF = (FLAG_SIZE_SRC_OFF + 3);
-constexpr uint32_t FLAG_OPADDR_STACKSIZE = 4; // Two level deep stack
-constexpr uint32_t FLAG_OPADDR_FLAG_SIZE = 2;
-constexpr uint32_t FLAG_OPADDR_MASK = (((1 << FLAG_OPADDR_STACKSIZE) - 1) << FLAG_OPADDR_OFF);
+  constexpr uint32_t FLAG_OPADDR_OFF = (FLAG_SIZE_SRC_OFF + 3);
+  constexpr uint32_t FLAG_OPADDR_STACKSIZE = 4; // Two level deep stack
+  constexpr uint32_t FLAG_OPADDR_FLAG_SIZE = 2;
+  constexpr uint32_t FLAG_OPADDR_MASK = (((1 << FLAG_OPADDR_STACKSIZE) - 1) << FLAG_OPADDR_OFF);

-// 00 = NONE
-constexpr uint32_t FLAG_OPERAND_SIZE_LAST = 0b01;
-constexpr uint32_t FLAG_WIDENING_SIZE_LAST = 0b10;
+  // 00 = NONE
+  constexpr uint32_t FLAG_OPERAND_SIZE_LAST = 0b01;
+  constexpr uint32_t FLAG_WIDENING_SIZE_LAST = 0b10;

-constexpr uint32_t GetSizeDstFlags(uint32_t Flags) { return (Flags >> FLAG_SIZE_DST_OFF) & SIZE_MASK; }
-constexpr uint32_t GetSizeSrcFlags(uint32_t Flags) { return (Flags >> FLAG_SIZE_SRC_OFF) & SIZE_MASK; }
-
-constexpr uint32_t GenSizeDstSize(uint32_t Size) { return Size << FLAG_SIZE_DST_OFF; }
-constexpr uint32_t GenSizeSrcSize(uint32_t Size) { return Size << FLAG_SIZE_SRC_OFF; }
-
-constexpr uint32_t GetOpAddr(uint32_t Flags, uint32_t Index) {
-  return (((Flags & FLAG_OPADDR_MASK) >> FLAG_OPADDR_OFF) >> (Index * 2)) & ((1 << FLAG_OPADDR_FLAG_SIZE) - 1);
-}
-
-inline void PushOpAddr(uint32_t *Flags, uint32_t Flag) {
-  uint32_t TmpFlags  = *Flags;
-  uint32_t BottomOfStack = ((TmpFlags & FLAG_OPADDR_MASK) >> FLAG_OPADDR_OFF) & ((1 << FLAG_OPADDR_FLAG_SIZE) - 1);
-
-  TmpFlags &= ~(FLAG_OPADDR_MASK);
-  TmpFlags |=
-    (BottomOfStack << (FLAG_OPADDR_OFF + FLAG_OPADDR_FLAG_SIZE)) |
-    (Flag << FLAG_OPADDR_OFF);
-
-  *Flags = TmpFlags;
-}
-
-inline void PopOpAddrIf(uint32_t *Flags, uint32_t Flag) {
-  uint32_t TmpFlags  = *Flags;
-  uint32_t BottomOfStack = ((TmpFlags & FLAG_OPADDR_MASK) >> FLAG_OPADDR_OFF) & ((1 << FLAG_OPADDR_FLAG_SIZE) - 1);
-
-  // Only pop the stack if the bottom flag is the one we care about
-  // Necessary for escape prefixes that overlap regular prefixes
-  if (BottomOfStack != Flag) {
-    return;
+  constexpr uint32_t GetSizeDstFlags(uint32_t Flags) {
+    return (Flags >> FLAG_SIZE_DST_OFF) & SIZE_MASK;
+  }
+  constexpr uint32_t GetSizeSrcFlags(uint32_t Flags) {
+    return (Flags >> FLAG_SIZE_SRC_OFF) & SIZE_MASK;
  }

-  uint32_t TopOfStack = ((TmpFlags & FLAG_OPADDR_MASK) >> (FLAG_OPADDR_OFF + FLAG_OPADDR_FLAG_SIZE)) & ((1 << FLAG_OPADDR_FLAG_SIZE) - 1);
+  constexpr uint32_t GenSizeDstSize(uint32_t Size) {
+    return Size << FLAG_SIZE_DST_OFF;
+  }
+  constexpr uint32_t GenSizeSrcSize(uint32_t Size) {
+    return Size << FLAG_SIZE_SRC_OFF;
+  }

-  TmpFlags &= ~(FLAG_OPADDR_MASK);
-  TmpFlags |= (TopOfStack << FLAG_OPADDR_OFF);
+  constexpr uint32_t GetOpAddr(uint32_t Flags, uint32_t Index) {
+    return (((Flags & FLAG_OPADDR_MASK) >> FLAG_OPADDR_OFF) >> (Index * 2)) & ((1 << FLAG_OPADDR_FLAG_SIZE) - 1);
+  }

-  *Flags = TmpFlags;
-}
+  inline void PushOpAddr(uint32_t* Flags, uint32_t Flag) {
+    uint32_t TmpFlags = *Flags;
+    uint32_t BottomOfStack = ((TmpFlags & FLAG_OPADDR_MASK) >> FLAG_OPADDR_OFF) & ((1 << FLAG_OPADDR_FLAG_SIZE) - 1);

-}
+    TmpFlags &= ~(FLAG_OPADDR_MASK);
+    TmpFlags |= (BottomOfStack << (FLAG_OPADDR_OFF + FLAG_OPADDR_FLAG_SIZE)) | (Flag << FLAG_OPADDR_OFF);
+
+    *Flags = TmpFlags;
+  }
+
+  inline void PopOpAddrIf(uint32_t* Flags, uint32_t Flag) {
+    uint32_t TmpFlags = *Flags;
+    uint32_t BottomOfStack = ((TmpFlags & FLAG_OPADDR_MASK) >> FLAG_OPADDR_OFF) & ((1 << FLAG_OPADDR_FLAG_SIZE) - 1);
+
+    // Only pop the stack if the bottom flag is the one we care about
+    // Necessary for escape prefixes that overlap regular prefixes
+    if (BottomOfStack != Flag) {
+      return;
+    }
+
+    uint32_t TopOfStack = ((TmpFlags & FLAG_OPADDR_MASK) >> (FLAG_OPADDR_OFF + FLAG_OPADDR_FLAG_SIZE)) & ((1 << FLAG_OPADDR_FLAG_SIZE) - 1);
+
+    TmpFlags &= ~(FLAG_OPADDR_MASK);
+    TmpFlags |= (TopOfStack << FLAG_OPADDR_OFF);
+
+    *Flags = TmpFlags;
+  }
+
+} // namespace DecodeFlags

 struct DecodedOperand {
  enum class OpType : uint8_t {
@@ -117,9 +123,13 @@ struct DecodedOperand {
    GPR,
    GPRDirect,
    GPRIndirect,
+    GPRIndirectRelocation,
    RIPRelative,
+    RIPRelativeRelocation,
    Literal,
+    LiteralRelocation,
    SIB,
+    SIBRelocation
  };

  bool IsNone() const {
@@ -134,20 +144,30 @@ struct DecodedOperand {
  bool IsGPRIndirect() const {
    return Type == OpType::GPRIndirect;
  }
+  bool IsGPRIndirectRelocation() const {
+    return Type == OpType::GPRIndirectRelocation;
+  }
  bool IsRIPRelative() const {
    return Type == OpType::RIPRelative;
  }
+  bool IsRIPRelativeRelocation() const {
+    return Type == OpType::RIPRelativeRelocation;
+  }
  bool IsLiteral() const {
    return Type == OpType::Literal;
  }
+  bool IsLiteralRelocation() const {
+    return Type == OpType::LiteralRelocation;
+  }
  bool IsSIB() const {
    return Type == OpType::SIB;
  }
+  bool IsSIBRelocation() const {
+    return Type == OpType::SIBRelocation;
+  }
+
  uint64_t Literal() const {
    LOGMAN_THROW_A_FMT(IsLiteral(), "Precondition: must be a literal");
-    if (Data.Literal.SignExtend) {
-      return static_cast<int64_t>(static_cast<int32_t>(Data.Literal.Value));
-    }
    return Data.Literal.Value;
  }

@@ -159,30 +179,29 @@ struct DecodedOperand {
    } GPR;

    struct {
-      int32_t Displacement;
+      int64_t Displacement;
      uint8_t GPR;
-    } GPRIndirect;
+    } GPRIndirect; // Shared with GPRIndirectRelocation

    struct {
-      union {
-        int32_t s;
-        uint32_t u;
-      } Value;
-    } RIPLiteral;
+      int64_t Value;
+    } RIPLiteral; // Shared with RIPLiteralRelocation

    struct LiteralType {
-      uint32_t Value;
-      uint8_t Size : 7 ;
-      bool SignExtend : 1;
-      auto operator<=>(const LiteralType&) const = default;
+      uint64_t Value;
+      uint8_t Size;
    } Literal;

    struct {
-      int32_t Offset;
+      int64_t EntrypointOffset;
+    } LiteralRelocation;
+
+    struct {
+      int64_t Offset;
      uint8_t Scale;
      uint8_t Index; // ~0 invalid
-      uint8_t Base; // ~0 invalid
-    } SIB;
+      uint8_t Base;  // ~0 invalid
+    } SIB;           // Shared with SIBRelocation
  };

  TypeUnion Data;
@@ -196,7 +215,7 @@ struct DecodedInst {
  DecodedOperand Src[3];

  // Constains the dispatcher handler pointer
-  X86InstInfo const* TableInfo;
+  const X86InstInfo* TableInfo;

  uint32_t Flags;
  uint16_t OP;
@@ -205,21 +224,22 @@ struct DecodedInst {
  uint8_t ModRM;
  uint8_t SIB;
  uint8_t InstSize;
+  int8_t REXIndex;
 };

 union ModRMDecoded {
-  uint8_t Hex{};
+  uint8_t Hex {};
  struct {
-    uint8_t rm : 3;
+    uint8_t rm  : 3;
    uint8_t reg : 3;
    uint8_t mod : 2;
  };
 };

 union SIBDecoded {
-  uint8_t Hex{};
+  uint8_t Hex {};
  struct {
-    uint8_t base : 3;
+    uint8_t base  : 3;
    uint8_t index : 3;
    uint8_t scale : 2;
  };
@@ -290,123 +310,136 @@ enum InstType {

 namespace InstFlags {

-using InstFlagType = uint64_t;
+  using InstFlagType = uint64_t;

-constexpr InstFlagType FLAGS_NONE                  = 0;
-// The secondary Opcode Map uses prefix bytes to overlay more instruction
-// But some instructions need to ignore this overlay and consume these prefixes.
-constexpr InstFlagType FLAGS_NO_OVERLAY            = (1ULL << 0);
-// Some instructions partially ignore overlay
-// Ignore OpSize (0x66) in this case
-constexpr InstFlagType FLAGS_NO_OVERLAY66          = (1ULL << 1);
-constexpr InstFlagType FLAGS_DEBUG_MEM_ACCESS      = (1ULL << 2);
-// Only SEXT if the instruction is operating in 64bit operand size
-constexpr InstFlagType FLAGS_SRC_SEXT64BIT         = (1ULL << 3);
-constexpr InstFlagType FLAGS_BLOCK_END             = (1ULL << 4);
-constexpr InstFlagType FLAGS_SETS_RIP              = (1ULL << 5);
+  constexpr InstFlagType FLAGS_NONE = 0;
+  // The secondary Opcode Map uses prefix bytes to overlay more instruction
+  // But some instructions need to ignore this overlay and consume these prefixes.
+  constexpr InstFlagType FLAGS_NO_OVERLAY = (1ULL << 0);
+  // Some instructions partially ignore overlay
+  // Ignore OpSize (0x66) in this case
+  constexpr InstFlagType FLAGS_NO_OVERLAY66 = (1ULL << 1);
+  constexpr InstFlagType FLAGS_DEBUG_MEM_ACCESS = (1ULL << 2);
+  // Only SEXT if the instruction is operating in 64bit operand size
+  constexpr InstFlagType FLAGS_SRC_SEXT64BIT = (1ULL << 3);
+  constexpr InstFlagType FLAGS_BLOCK_END = (1ULL << 4);
+  constexpr InstFlagType FLAGS_SETS_RIP = (1ULL << 5);

-constexpr InstFlagType FLAGS_DISPLACE_SIZE_MUL_2   = (1ULL << 6);
-constexpr InstFlagType FLAGS_DISPLACE_SIZE_DIV_2   = (1ULL << 7);
-constexpr InstFlagType FLAGS_SRC_SEXT              = (1ULL << 8);
-constexpr InstFlagType FLAGS_MEM_OFFSET            = (1ULL << 9);
+  constexpr InstFlagType FLAGS_DISPLACE_SIZE_MUL_2 = (1ULL << 6);
+  constexpr InstFlagType FLAGS_DISPLACE_SIZE_DIV_2 = (1ULL << 7);
+  constexpr InstFlagType FLAGS_SRC_SEXT = (1ULL << 8);
+  constexpr InstFlagType FLAGS_MEM_OFFSET = (1ULL << 9);

-// Enables XMM based subflags
-// Current reserved range for this SF is [10, 15]
-constexpr InstFlagType FLAGS_XMM_FLAGS             = (1ULL << 10);
+  // Enables XMM based subflags
+  // Current reserved range for this SF is [10, 15]
+  constexpr InstFlagType FLAGS_XMM_FLAGS = (1ULL << 10);

-// X87 flags aliased to XMM flags selection
-// Allows X87 instruction table that is abusing the flag for 64BIT selection to work
-constexpr InstFlagType FLAGS_X87_FLAGS             = (1ULL << 10);
+  // X87 flags aliased to XMM flags selection
+  // Allows X87 instruction table that is abusing the flag for 64BIT selection to work
+  constexpr InstFlagType FLAGS_X87_FLAGS = (1ULL << 10);

  // Non-XMM subflags
-  constexpr InstFlagType FLAGS_SF_DST_RAX               = (1ULL << 11);
-  constexpr InstFlagType FLAGS_SF_DST_RDX               = (1ULL << 12);
-  constexpr InstFlagType FLAGS_SF_SRC_RAX               = (1ULL << 13);
-  constexpr InstFlagType FLAGS_SF_SRC_RCX               = (1ULL << 14);
-  constexpr InstFlagType FLAGS_SF_REX_IN_BYTE           = (1ULL << 15);
+  constexpr InstFlagType FLAGS_SF_DST_RAX = (1ULL << 11);
+  constexpr InstFlagType FLAGS_SF_DST_RDX = (1ULL << 12);
+  constexpr InstFlagType FLAGS_SF_SRC_RAX = (1ULL << 13);
+  constexpr InstFlagType FLAGS_SF_SRC_RCX = (1ULL << 14);
+  constexpr InstFlagType FLAGS_SF_REX_IN_BYTE = (1ULL << 15);

  // XMM subflags
-  constexpr InstFlagType FLAGS_SF_UNUSED             = (1ULL << 11); // No assigned behavior yet
-  constexpr InstFlagType FLAGS_SF_DST_GPR            = (1ULL << 12);
-  constexpr InstFlagType FLAGS_SF_SRC_GPR            = (1ULL << 13);
-  constexpr InstFlagType FLAGS_SF_MMX_DST            = (1ULL << 14);
-  constexpr InstFlagType FLAGS_SF_MMX_SRC            = (1ULL << 15);
-  constexpr InstFlagType FLAGS_SF_MMX                = FLAGS_SF_MMX_DST | FLAGS_SF_MMX_SRC;
+  constexpr InstFlagType FLAGS_SF_UNUSED = (1ULL << 11); // No assigned behavior yet
+  constexpr InstFlagType FLAGS_SF_DST_GPR = (1ULL << 12);
+  constexpr InstFlagType FLAGS_SF_SRC_GPR = (1ULL << 13);
+  constexpr InstFlagType FLAGS_SF_MMX_DST = (1ULL << 14);
+  constexpr InstFlagType FLAGS_SF_MMX_SRC = (1ULL << 15);
+  constexpr InstFlagType FLAGS_SF_MMX = FLAGS_SF_MMX_DST | FLAGS_SF_MMX_SRC;

-// Enables MODRM specific subflags
-// Current reserved range for this SF is [14, 17]
-constexpr InstFlagType FLAGS_MODRM                 = (1ULL << 16);
+  // Enables MODRM specific subflags
+  // Current reserved range for this SF is [14, 17]
+  constexpr InstFlagType FLAGS_MODRM = (1ULL << 16);

  // With ModRM SF flag enabled
  // Direction of ModRM. Dst ^ Src
  // Set means destination is rm bits
  // Unset means src is rm bits
-  constexpr InstFlagType FLAGS_SF_MOD_DST            = (1ULL << 17);
+  constexpr InstFlagType FLAGS_SF_MOD_DST = (1ULL << 17);

  // If the instruction is restricted to mem or reg only
  // 0b00 = Regular ModRM support
  // 0b01 = Memory accesses only
  // 0b10 = Register accesses only
  // 0b11 = <Reserved>
-  constexpr InstFlagType FLAGS_SF_MOD_MEM_ONLY       = (1ULL << 18);
-  constexpr InstFlagType FLAGS_SF_MOD_REG_ONLY       = (1ULL << 19);
+  constexpr InstFlagType FLAGS_SF_MOD_MEM_ONLY = (1ULL << 18);
+  constexpr InstFlagType FLAGS_SF_MOD_REG_ONLY = (1ULL << 19);

-  constexpr InstFlagType FLAGS_SF_MOD_ZERO_REG       = (1ULL << 20);
+  constexpr InstFlagType FLAGS_SF_MOD_ZERO_REG = (1ULL << 20);

-// x87
-constexpr InstFlagType FLAGS_POP                  = (1ULL << 21);
+  // x87
+  constexpr InstFlagType FLAGS_POP = (1ULL << 21);

-// Whether or not the instruction has a VEX prefix for the dest, first, or second source.
-constexpr InstFlagType FLAGS_VEX_SRC_MASK         = (0b11ULL << 22);
-constexpr InstFlagType FLAGS_VEX_NO_OPERAND       = (0b00ULL << 22);
-constexpr InstFlagType FLAGS_VEX_DST              = (0b01ULL << 22);
-constexpr InstFlagType FLAGS_VEX_1ST_SRC          = (0b10ULL << 22);
-constexpr InstFlagType FLAGS_VEX_2ND_SRC          = (0b11ULL << 22);
-// Whether or not the instruction has a VSIB byte
-constexpr InstFlagType FLAGS_VEX_VSIB             = (1ULL << 24);
-constexpr InstFlagType FLAGS_VEX_L_IGNORE         = (1ULL << 25);
-constexpr InstFlagType FLAGS_VEX_L_0             = (1ULL << 26);
-constexpr InstFlagType FLAGS_VEX_L_1             = (1ULL << 27);
+  // Whether or not the instruction has a VEX prefix for the dest, first, or second source.
+  constexpr InstFlagType FLAGS_VEX_SRC_MASK = (0b11ULL << 22);
+  constexpr InstFlagType FLAGS_VEX_NO_OPERAND = (0b00ULL << 22);
+  constexpr InstFlagType FLAGS_VEX_DST = (0b01ULL << 22);
+  constexpr InstFlagType FLAGS_VEX_1ST_SRC = (0b10ULL << 22);
+  constexpr InstFlagType FLAGS_VEX_2ND_SRC = (0b11ULL << 22);
+  // Whether or not the instruction has a VSIB byte
+  constexpr InstFlagType FLAGS_VEX_VSIB = (1ULL << 24);
+  constexpr InstFlagType FLAGS_VEX_L_IGNORE = (1ULL << 25);
+  constexpr InstFlagType FLAGS_VEX_L_0 = (1ULL << 26);
+  constexpr InstFlagType FLAGS_VEX_L_1 = (1ULL << 27);

-constexpr InstFlagType FLAGS_REX_W_0             = (1ULL << 28);
-constexpr InstFlagType FLAGS_REX_W_1             = (1ULL << 29);
+  constexpr InstFlagType FLAGS_REX_W_0 = (1ULL << 28);
+  constexpr InstFlagType FLAGS_REX_W_1 = (1ULL << 29);

-constexpr InstFlagType FLAGS_CALL             = (1ULL << 30);
+  constexpr InstFlagType FLAGS_CALL = (1ULL << 30);

-constexpr InstFlagType FLAGS_SIZE_DST_OFF = 58;
-constexpr InstFlagType FLAGS_SIZE_SRC_OFF = FLAGS_SIZE_DST_OFF + 3;
+  constexpr InstFlagType FLAGS_SIZE_DST_OFF = 58;
+  constexpr InstFlagType FLAGS_SIZE_SRC_OFF = FLAGS_SIZE_DST_OFF + 3;

-constexpr InstFlagType SIZE_MASK     = 0b111;
-constexpr InstFlagType SIZE_DEF      = 0b000;
-constexpr InstFlagType SIZE_8BIT     = 0b001;
-constexpr InstFlagType SIZE_16BIT    = 0b010;
-constexpr InstFlagType SIZE_32BIT    = 0b011;
-constexpr InstFlagType SIZE_64BIT    = 0b100;
-constexpr InstFlagType SIZE_128BIT   = 0b101;
-constexpr InstFlagType SIZE_256BIT   = 0b110;
-constexpr InstFlagType SIZE_64BITDEF = 0b111; // Default mode is 64bit instead of typical 32bit
+  constexpr InstFlagType SIZE_MASK = 0b111;
+  constexpr InstFlagType SIZE_DEF = 0b000;
+  constexpr InstFlagType SIZE_8BIT = 0b001;
+  constexpr InstFlagType SIZE_16BIT = 0b010;
+  constexpr InstFlagType SIZE_32BIT = 0b011;
+  constexpr InstFlagType SIZE_64BIT = 0b100;
+  constexpr InstFlagType SIZE_128BIT = 0b101;
+  constexpr InstFlagType SIZE_256BIT = 0b110;
+  constexpr InstFlagType SIZE_64BITDEF = 0b111; // Default mode is 64bit instead of typical 32bit

 #ifndef _WIN32
  constexpr uint32_t DEFAULT_SYSCALL_FLAGS = FLAGS_NO_OVERLAY;
 #else
-  // Syscall ends a block on WIN32 because the instruction can update the CPU's RIP.
+                                                // Syscall ends a block on WIN32 because the instruction can update the CPU's RIP.
  constexpr uint32_t DEFAULT_SYSCALL_FLAGS = FLAGS_NO_OVERLAY | FLAGS_BLOCK_END;
 #endif

-constexpr InstFlagType GetSizeDstFlags(InstFlagType Flags) { return (Flags >> FLAGS_SIZE_DST_OFF) & SIZE_MASK; }
-constexpr InstFlagType GetSizeSrcFlags(InstFlagType Flags) { return (Flags >> FLAGS_SIZE_SRC_OFF) & SIZE_MASK; }
+  constexpr InstFlagType GetSizeDstFlags(InstFlagType Flags) {
+    return (Flags >> FLAGS_SIZE_DST_OFF) & SIZE_MASK;
+  }
+  constexpr InstFlagType GetSizeSrcFlags(InstFlagType Flags) {
+    return (Flags >> FLAGS_SIZE_SRC_OFF) & SIZE_MASK;
+  }

-constexpr InstFlagType GenFlagsDstSize(InstFlagType Size) { return Size << FLAGS_SIZE_DST_OFF; }
-constexpr InstFlagType GenFlagsSrcSize(InstFlagType Size) { return Size << FLAGS_SIZE_SRC_OFF; }
-constexpr InstFlagType GenFlagsSameSize(InstFlagType Size) { return (Size << FLAGS_SIZE_DST_OFF) | (Size << FLAGS_SIZE_SRC_OFF); }
-constexpr InstFlagType GenFlagsSizes(InstFlagType Dest, InstFlagType Src) { return (Dest << FLAGS_SIZE_DST_OFF) | (Src << FLAGS_SIZE_SRC_OFF); }
+  constexpr InstFlagType GenFlagsDstSize(InstFlagType Size) {
+    return Size << FLAGS_SIZE_DST_OFF;
+  }
+  constexpr InstFlagType GenFlagsSrcSize(InstFlagType Size) {
+    return Size << FLAGS_SIZE_SRC_OFF;
+  }
+  constexpr InstFlagType GenFlagsSameSize(InstFlagType Size) {
+    return (Size << FLAGS_SIZE_DST_OFF) | (Size << FLAGS_SIZE_SRC_OFF);
+  }
+  constexpr InstFlagType GenFlagsSizes(InstFlagType Dest, InstFlagType Src) {
+    return (Dest << FLAGS_SIZE_DST_OFF) | (Src << FLAGS_SIZE_SRC_OFF);
+  }

 // If it has an xmm subflag
-#define HAS_XMM_SUBFLAG(x, flag) (((x) & (FEXCore::X86Tables::InstFlags::FLAGS_XMM_FLAGS | (flag))) == (FEXCore::X86Tables::InstFlags::FLAGS_XMM_FLAGS | (flag)))
+#define HAS_XMM_SUBFLAG(x, flag) \
+  (((x) & (FEXCore::X86Tables::InstFlags::FLAGS_XMM_FLAGS | (flag))) == (FEXCore::X86Tables::InstFlags::FLAGS_XMM_FLAGS | (flag)))

 // If it has non-xmm subflag
 #define HAS_NON_XMM_SUBFLAG(x, flag) (((x) & (FEXCore::X86Tables::InstFlags::FLAGS_XMM_FLAGS | (flag))) == (flag))
-}
+} // namespace InstFlags

 constexpr uint8_t OpToIndex(uint8_t Op) {
  switch (Op) {
@@ -436,32 +469,30 @@ constexpr uint8_t OpToIndex(uint8_t Op) {
  return 0;
 }

-using DecodedOp = DecodedInst const*;
+using DecodedOp = const DecodedInst*;
 using OpDispatchPtr = void (IR::OpDispatchBuilder::*)(DecodedOp);

 union OpDispatchPtrWrapper {
  OpDispatchPtr OpDispatch;
-  const struct X86InstInfo *Indirect;
+  const struct X86InstInfo* Indirect;
 };

 struct X86InstInfo {
-  char const *Name;
+  const char* Name;
  InstType Type;
  InstFlags::InstFlagType Flags; ///< Must be larger than InstFlags enum
  uint8_t MoreBytes;
  OpDispatchPtrWrapper OpcodeDispatcher;

-  bool operator==(const X86InstInfo &b) const {
-    if (strcmp(Name, b.Name) != 0 ||
-        Type != b.Type ||
-        Flags != b.Flags ||
-        MoreBytes != b.MoreBytes)
+  bool operator==(const X86InstInfo& b) const {
+    if (strcmp(Name, b.Name) != 0 || Type != b.Type || Flags != b.Flags || MoreBytes != b.MoreBytes) {
      return false;
+    }

    // We don't care if the opcode dispatcher differs
    return true;
  }
-  bool operator!=(const X86InstInfo &b) const {
+  bool operator!=(const X86InstInfo& b) const {
    return !operator==(b);
  }
 };
@@ -513,7 +544,7 @@ extern const std::array<X86InstInfo, MAX_VEX_GROUP_TABLE_SIZE> VEXTableGroupOps;
 extern const std::array<X86InstInfo, MAX_VEX_TABLE_SIZE> VEXTableOps_AVX128;
 extern const std::array<X86InstInfo, MAX_VEX_GROUP_TABLE_SIZE> VEXTableGroupOps_AVX128;

-template <typename OpcodeType>
+template<typename OpcodeType>
 struct X86TablesInfoStruct {
  OpcodeType first;
  uint8_t second;
@@ -523,11 +554,11 @@ using U8U8InfoStruct = X86TablesInfoStruct<uint8_t>;
 using U16U8InfoStruct = X86TablesInfoStruct<uint16_t>;

 template<typename OpcodeType>
-constexpr static inline void GenerateTable(X86InstInfo *FinalTable, X86TablesInfoStruct<OpcodeType> const *LocalTable, size_t TableSize) {
+constexpr static inline void GenerateTable(X86InstInfo* FinalTable, const X86TablesInfoStruct<OpcodeType>* LocalTable, size_t TableSize) {
  for (size_t j = 0; j < TableSize; ++j) {
-    X86TablesInfoStruct<OpcodeType> const &Op = LocalTable[j];
+    const X86TablesInfoStruct<OpcodeType>& Op = LocalTable[j];
    auto OpNum = Op.first;
-    X86InstInfo const &Info = Op.Info;
+    const X86InstInfo& Info = Op.Info;
    for (uint32_t i = 0; i < Op.second; ++i) {
      if (FinalTable[OpNum + i].Type != TYPE_UNKNOWN) {
        LOGMAN_MSG_A_FMT("Duplicate Entry {}->{}", FinalTable[OpNum + i].Name, Info.Name);
@@ -541,19 +572,19 @@ constexpr static inline void GenerateTable(X86InstInfo *FinalTable, X86TablesInf
 };

 template<typename OpcodeType>
-constexpr static inline void GenerateTableWithCopy(X86InstInfo *FinalTable, X86TablesInfoStruct<OpcodeType> const *LocalTable, size_t TableSize, const X86InstInfo *OtherLocal) {
+constexpr static inline void GenerateTableWithCopy(X86InstInfo* FinalTable, const X86TablesInfoStruct<OpcodeType>* LocalTable,
+                                                   size_t TableSize, const X86InstInfo* OtherLocal) {
  for (size_t j = 0; j < TableSize; ++j) {
-    X86TablesInfoStruct<OpcodeType> const &Op = LocalTable[j];
+    const X86TablesInfoStruct<OpcodeType>& Op = LocalTable[j];
    auto OpNum = Op.first;
-    X86InstInfo const &Info = Op.Info;
+    const X86InstInfo& Info = Op.Info;
    for (uint32_t i = 0; i < Op.second; ++i) {
      if (FinalTable[OpNum + i].Type != TYPE_UNKNOWN) {
        LOGMAN_MSG_A_FMT("Duplicate Entry {}->{}", FinalTable[OpNum + i].Name, Info.Name);
      }
      if (Info.Type == TYPE_COPY_OTHER) {
        FinalTable[OpNum + i] = OtherLocal[OpNum + i];
-      }
-      else {
+      } else {
        FinalTable[OpNum + i] = Info;
      }
    }
@@ -561,11 +592,11 @@ constexpr static inline void GenerateTableWithCopy(X86InstInfo *FinalTable, X86T
 };

 template<typename OpcodeType>
-constexpr static inline void GenerateX87Table(X86InstInfo *FinalTable, X86TablesInfoStruct<OpcodeType> const *LocalTable, size_t TableSize) {
+constexpr static inline void GenerateX87Table(X86InstInfo* FinalTable, const X86TablesInfoStruct<OpcodeType>* LocalTable, size_t TableSize) {
  for (size_t j = 0; j < TableSize; ++j) {
-    X86TablesInfoStruct<OpcodeType> const &Op = LocalTable[j];
+    const X86TablesInfoStruct<OpcodeType>& Op = LocalTable[j];
    auto OpNum = Op.first;
-    X86InstInfo const &Info = Op.Info;
+    const X86InstInfo& Info = Op.Info;
    for (uint32_t i = 0; i < Op.second; ++i) {
      if (FinalTable[OpNum + i].Type != TYPE_UNKNOWN) {
        LOGMAN_MSG_A_FMT("Duplicate Entry {}->{}", FinalTable[OpNum + i].Name, Info.Name);
@@ -573,8 +604,7 @@ constexpr static inline void GenerateX87Table(X86InstInfo *FinalTable, X86Tables
      if ((OpNum & 0b11'000'000) == 0b11'000'000) {
        // If the mod field is 0b11 then it is a regular op
        FinalTable[OpNum + i] = Info;
-      }
-      else {
+      } else {
        // If the mod field is !0b11 then this instruction is duplicated through the whole mod [0b00, 0b10] range
        // and the modrm.rm space because that is used part of the instruction encoding
        if ((OpNum & 0b11'000'000) != 0) {
@@ -17,7 +17,7 @@ using namespace IR;
 // All OPDReg versions need it
 #define OPDReg(op, reg) ((1 << 15) | ((op - 0xD8) << 8) | (reg << 3))
 #define OPD(op, modrmop) (((op - 0xD8) << 8) | modrmop)
-constexpr std::array<DispatchTableEntry, 133> X87F64OpTable = {{
+constexpr std::array<DispatchTableEntry, 140> X87F64OpTable = {{
  {OPDReg(0xD8, 0) | 0x00, 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FADDF64, OpSize::i32Bit, false, OpDispatchBuilder::OpResult::RES_ST0>},

  {OPDReg(0xD8, 1) | 0x00, 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FMULF64, OpSize::i32Bit, false, OpDispatchBuilder::OpResult::RES_ST0>},
@@ -194,6 +194,10 @@ constexpr std::array<DispatchTableEntry, 133> X87F64OpTable = {{

  {OPD(0xDC, 0xC0), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FADDF64, OpSize::f80Bit, false, OpDispatchBuilder::OpResult::RES_STI>},
  {OPD(0xDC, 0xC8), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FMULF64, OpSize::f80Bit, false, OpDispatchBuilder::OpResult::RES_STI>},
+  {OPD(0xDC, 0xD0), 8,
+   &OpDispatchBuilder::Bind<&OpDispatchBuilder::FCOMIF64, OpSize::f80Bit, false, OpDispatchBuilder::FCOMIFlags::FLAGS_X87, false>},
+  {OPD(0xDC, 0xD8), 8,
+   &OpDispatchBuilder::Bind<&OpDispatchBuilder::FCOMIF64, OpSize::f80Bit, false, OpDispatchBuilder::FCOMIFlags::FLAGS_X87, false>},
  {OPD(0xDC, 0xE0), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FSUBF64, OpSize::f80Bit, false, true, OpDispatchBuilder::OpResult::RES_STI>},
  {OPD(0xDC, 0xE8), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FSUBF64, OpSize::f80Bit, false, false, OpDispatchBuilder::OpResult::RES_STI>},
  {OPD(0xDC, 0xF0), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FDIVF64, OpSize::f80Bit, false, true, OpDispatchBuilder::OpResult::RES_STI>},
@@ -215,6 +219,7 @@ constexpr std::array<DispatchTableEntry, 133> X87F64OpTable = {{
  {OPDReg(0xDD, 7) | 0x00, 8, &OpDispatchBuilder::X87FNSTSW},

  {OPD(0xDD, 0xC0), 8, &OpDispatchBuilder::X87FFREE},
+  {OPD(0xDD, 0xC8), 8, &OpDispatchBuilder::FXCH},
  {OPD(0xDD, 0xD0), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FSTToStack>}, // register-register from regular X87
  {OPD(0xDD, 0xD8), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FSTToStack>}, //^

@@ -247,6 +252,8 @@ constexpr std::array<DispatchTableEntry, 133> X87F64OpTable = {{

  {OPD(0xDE, 0xC0), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FADDF64, OpSize::f80Bit, false, OpDispatchBuilder::OpResult::RES_STI>},
  {OPD(0xDE, 0xC8), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FMULF64, OpSize::f80Bit, false, OpDispatchBuilder::OpResult::RES_STI>},
+  {OPD(0xDE, 0xD0), 8,
+   &OpDispatchBuilder::Bind<&OpDispatchBuilder::FCOMIF64, OpSize::f80Bit, false, OpDispatchBuilder::FCOMIFlags::FLAGS_X87, false>},
  {OPD(0xDE, 0xD9), 1,
   &OpDispatchBuilder::Bind<&OpDispatchBuilder::FCOMIF64, OpSize::f80Bit, false, OpDispatchBuilder::FCOMIFlags::FLAGS_X87, true>},
  {OPD(0xDE, 0xE0), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FSUBF64, OpSize::f80Bit, false, true, OpDispatchBuilder::OpResult::RES_STI>},
@@ -273,6 +280,9 @@ constexpr std::array<DispatchTableEntry, 133> X87F64OpTable = {{
  // XXX: This should also set the x87 tag bits to empty
  // We don't support this currently, so just pop the stack
  {OPD(0xDF, 0xC0), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::X87ModifySTP, true>},
+  {OPD(0xDF, 0xC8), 8, &OpDispatchBuilder::FXCH},
+  {OPD(0xDF, 0xD0), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FSTToStack>},
+  {OPD(0xDF, 0xD8), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FSTToStack>},

  {OPD(0xDF, 0xE0), 8, &OpDispatchBuilder::X87FNSTSW},
  {OPD(0xDF, 0xE8), 8,
@@ -281,7 +291,7 @@ constexpr std::array<DispatchTableEntry, 133> X87F64OpTable = {{
   &OpDispatchBuilder::Bind<&OpDispatchBuilder::FCOMIF64, OpSize::f80Bit, false, OpDispatchBuilder::FCOMIFlags::FLAGS_RFLAGS, false>},
 }};

-constexpr std::array<DispatchTableEntry, 133> X87F80OpTable = {{
+constexpr std::array<DispatchTableEntry, 140> X87F80OpTable = {{
  {OPDReg(0xD8, 0) | 0x00, 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FADD, OpSize::i32Bit, false, OpDispatchBuilder::OpResult::RES_ST0>},

  {OPDReg(0xD8, 1) | 0x00, 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FMUL, OpSize::i32Bit, false, OpDispatchBuilder::OpResult::RES_ST0>},
@@ -453,6 +463,8 @@ constexpr std::array<DispatchTableEntry, 133> X87F80OpTable = {{

  {OPD(0xDC, 0xC0), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FADD, OpSize::f80Bit, false, OpDispatchBuilder::OpResult::RES_STI>},
  {OPD(0xDC, 0xC8), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FMUL, OpSize::f80Bit, false, OpDispatchBuilder::OpResult::RES_STI>},
+  {OPD(0xDC, 0xD0), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FCOMI, OpSize::f80Bit, false, OpDispatchBuilder::FCOMIFlags::FLAGS_X87, false>},
+  {OPD(0xDC, 0xD8), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FCOMI, OpSize::f80Bit, false, OpDispatchBuilder::FCOMIFlags::FLAGS_X87, false>},
  {OPD(0xDC, 0xE0), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FSUB, OpSize::f80Bit, false, true, OpDispatchBuilder::OpResult::RES_STI>},
  {OPD(0xDC, 0xE8), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FSUB, OpSize::f80Bit, false, false, OpDispatchBuilder::OpResult::RES_STI>},
  {OPD(0xDC, 0xF0), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FDIV, OpSize::f80Bit, false, true, OpDispatchBuilder::OpResult::RES_STI>},
@@ -474,6 +486,7 @@ constexpr std::array<DispatchTableEntry, 133> X87F80OpTable = {{
  {OPDReg(0xDD, 7) | 0x00, 8, &OpDispatchBuilder::X87FNSTSW},

  {OPD(0xDD, 0xC0), 8, &OpDispatchBuilder::X87FFREE},
+  {OPD(0xDD, 0xC8), 8, &OpDispatchBuilder::FXCH},
  {OPD(0xDD, 0xD0), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FSTToStack>},
  {OPD(0xDD, 0xD8), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FSTToStack>},

@@ -502,6 +515,7 @@ constexpr std::array<DispatchTableEntry, 133> X87F80OpTable = {{

  {OPD(0xDE, 0xC0), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FADD, OpSize::f80Bit, false, OpDispatchBuilder::OpResult::RES_STI>},
  {OPD(0xDE, 0xC8), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FMUL, OpSize::f80Bit, false, OpDispatchBuilder::OpResult::RES_STI>},
+  {OPD(0xDE, 0xD0), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FCOMI, OpSize::f80Bit, false, OpDispatchBuilder::FCOMIFlags::FLAGS_X87, false>},
  {OPD(0xDE, 0xD9), 1, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FCOMI, OpSize::f80Bit, false, OpDispatchBuilder::FCOMIFlags::FLAGS_X87, true>},
  {OPD(0xDE, 0xE0), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FSUB, OpSize::f80Bit, false, true, OpDispatchBuilder::OpResult::RES_STI>},
  {OPD(0xDE, 0xE8), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FSUB, OpSize::f80Bit, false, false, OpDispatchBuilder::OpResult::RES_STI>},
@@ -527,6 +541,9 @@ constexpr std::array<DispatchTableEntry, 133> X87F80OpTable = {{
  // XXX: This should also set the x87 tag bits to empty
  // We don't support this currently, so just pop the stack
  {OPD(0xDF, 0xC0), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::X87ModifySTP, true>},
+  {OPD(0xDF, 0xC8), 8, &OpDispatchBuilder::FXCH},
+  {OPD(0xDF, 0xD0), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FSTToStack>},
+  {OPD(0xDF, 0xD8), 8, &OpDispatchBuilder::Bind<&OpDispatchBuilder::FSTToStack>},

  {OPD(0xDF, 0xE0), 8, &OpDispatchBuilder::X87FNSTSW},
  {OPD(0xDF, 0xE8), 8,
@@ -688,9 +705,9 @@ auto GenerateX87TableLambda = [](const auto DispatchTable) consteval {
      //  / 1
      {OPD(0xDC, 0xC8), 8, X86InstInfo{"FMUL", TYPE_X87, FLAGS_NONE, 0}},
      //  / 2
-      {OPD(0xDC, 0xD0), 8, X86InstInfo{"", TYPE_INVALID, FLAGS_NONE, 0}},
+      {OPD(0xDC, 0xD0), 8, X86InstInfo{"FCOM", TYPE_X87, FLAGS_X87_FLAGS, 0}},
      //  / 3
-      {OPD(0xDC, 0xD8), 8, X86InstInfo{"", TYPE_INVALID, FLAGS_NONE, 0}},
+      {OPD(0xDC, 0xD8), 8, X86InstInfo{"FCOMP", TYPE_X87, FLAGS_X87_FLAGS | FLAGS_POP, 0}},
      //  / 4
      {OPD(0xDC, 0xE0), 8, X86InstInfo{"FSUBR", TYPE_X87, FLAGS_NONE, 0}},
      //  / 5
@@ -711,7 +728,7 @@ auto GenerateX87TableLambda = [](const auto DispatchTable) consteval {
      //  / 0
      {OPD(0xDD, 0xC0), 8, X86InstInfo{"FFREE", TYPE_X87, FLAGS_NONE, 0}},
      //  / 1
-      {OPD(0xDD, 0xC8), 8, X86InstInfo{"", TYPE_INVALID, FLAGS_NONE, 0}},
+      {OPD(0xDD, 0xC8), 8, X86InstInfo{"FXCH",  TYPE_X87, FLAGS_NONE, 0}},
      //  / 2
      {OPD(0xDD, 0xD0), 8, X86InstInfo{"FST", TYPE_INST, FLAGS_SF_MOD_DST, 0}},
      //  / 3
@@ -738,7 +755,7 @@ auto GenerateX87TableLambda = [](const auto DispatchTable) consteval {
      //  / 1
      {OPD(0xDE, 0xC8), 8, X86InstInfo{"FMULP", TYPE_X87, FLAGS_POP, 0}},
      //  / 2
-      {OPD(0xDE, 0xD0), 8, X86InstInfo{"", TYPE_INVALID, FLAGS_NONE, 0}},
+      {OPD(0xDE, 0xD0), 8, X86InstInfo{"FCOMP", TYPE_X87, FLAGS_X87_FLAGS | FLAGS_POP, 0}},
      //  / 3
      {OPD(0xDE, 0xD8), 1, X86InstInfo{"", TYPE_INVALID, FLAGS_NONE, 0}},
      {OPD(0xDE, 0xD9), 1, X86InstInfo{"FCOMPP", TYPE_X87, FLAGS_POP, 0}},
@@ -771,11 +788,11 @@ auto GenerateX87TableLambda = [](const auto DispatchTable) consteval {
      //  Almost all x86 CPUs implement this, and it is expected to be around
      {OPD(0xDF, 0xC0), 8, X86InstInfo{"FFREEP",  TYPE_X87, FLAGS_POP, 0}},
      //  / 1
-      {OPD(0xDF, 0xC8), 8, X86InstInfo{"",        TYPE_INVALID, FLAGS_NONE, 0}},
+      {OPD(0xDF, 0xC8), 8, X86InstInfo{"FXCH",    TYPE_X87, FLAGS_NONE, 0}},
      //  / 2
-      {OPD(0xDF, 0xD0), 8, X86InstInfo{"",        TYPE_INVALID, FLAGS_NONE, 0}},
+      {OPD(0xDF, 0xD0), 8, X86InstInfo{"FSTP",    TYPE_X87, FLAGS_SF_MOD_DST | FLAGS_POP, 0}},
      //  / 3
-      {OPD(0xDF, 0xD8), 8, X86InstInfo{"",        TYPE_INVALID, FLAGS_NONE, 0}},
+      {OPD(0xDF, 0xD8), 8, X86InstInfo{"FSTP",    TYPE_X87, FLAGS_SF_MOD_DST | FLAGS_POP, 0}},
      //  / 4
      {OPD(0xDF, 0xE0), 1, X86InstInfo{"FNSTSW",  TYPE_INST, GenFlagsSameSize(SIZE_16BIT) | FLAGS_SF_DST_RAX, 0}},
      {OPD(0xDF, 0xE1), 7, X86InstInfo{"",        TYPE_INVALID, FLAGS_NONE, 0}},
@@ -42,7 +42,7 @@ void __attribute__((noinline)) __jit_debug_register_code() {

 namespace FEXCore {

-void GDBJITRegister(FEXCore::ExecutableFileInfo& Entry, uintptr_t VAFileStart, uint64_t GuestRIP, uintptr_t HostEntry,
+void GDBJITRegister(const FEXCore::ExecutableFileInfo& Entry, uintptr_t VAFileStart, uint64_t GuestRIP, uintptr_t HostEntry,
                    FEXCore::Core::DebugData& DebugData) {
  auto map = Entry.SourcecodeMap.get();

@@ -113,7 +113,7 @@ void GDBJITRegister(FEXCore::ExecutableFileInfo& Entry, uintptr_t VAFileStart, u
 } // namespace FEXCore
 #else
 namespace FEXCore {
-void GDBJITRegister(FEXCore::ExecutableFileInfo&, uintptr_t, uint64_t, uintptr_t, FEXCore::Core::DebugData&) {
+void GDBJITRegister(const FEXCore::ExecutableFileInfo&, uintptr_t, uint64_t, uintptr_t, FEXCore::Core::DebugData&) {
  ERROR_AND_DIE_FMT("GDBSymbols support not compiled in");
 }
 } // namespace FEXCore
@@ -4,5 +4,5 @@
 #include <Interface/Core/JIT/DebugData.h>

 namespace FEXCore {
-void GDBJITRegister(FEXCore::ExecutableFileInfo&, uintptr_t VAFileStart, uint64_t GuestRIP, uintptr_t HostEntry, FEXCore::Core::DebugData&);
+void GDBJITRegister(const FEXCore::ExecutableFileInfo&, uintptr_t VAFileStart, uint64_t GuestRIP, uintptr_t HostEntry, FEXCore::Core::DebugData&);
 }
@@ -105,6 +105,11 @@
      "PosInfinity = 2,",
      "TowardsZero = 3, /* Truncate */",
      "Host        = 4,"
+    ],
+    "class ConstPad : uint8_t": [
+      "NoPad = 0,",
+      "DoPad = 1,",
+      "AutoPad = 2,"
    ]
  },
  "Defines": [
@@ -142,6 +147,7 @@
    "MemOffsetType": "MemOffsetType",
    "BreakDefinition": "BreakDefinition",
    "RoundType": "RoundMode",
+    "ConstPad": "ConstPad",
    "FloatCompareOp": "FloatCompareOp",
    "NamedVectorConstant": "FEXCore::IR::NamedVectorConstant",
    "IndexNamedVectorConstant": "FEXCore::IR::IndexNamedVectorConstant",
@@ -482,7 +488,7 @@
        "HasSideEffects": true,
        "Desc": ["Spills an SSA value to memory",
                 "Spill slots are register allocated and has live ranges calculated to handle slot calculation",
-                 "```diff\n- !Don't use this op. It is for RA to handle spilling and filling!\n```"
+                 "!Don't use this op. It is for RA to handle spilling and filling!"
                ],
        "EmitValidation": [
          "WalkFindRegClass($Value) == $Class"
@@ -492,7 +498,7 @@
      "SSA = FillRegister OpSize:#Size, OpSize:#ElementSize, u32:$Slot, RegisterClass:$Class": {
        "Desc": ["Fills a register from a spill slot",
                 "Spill slots are register allocated and has live ranges calculated to handle slot calculation",
-                 "```diff\n- !Don't use this op. It is for RA to handle spilling and filling!\n```"
+                 "!Don't use this op. It is for RA to handle spilling and filling!"
                ],
        "DestSize": "Size",
        "ElementSize": "ElementSize"
@@ -771,6 +777,17 @@
          "RegisterSize == FEXCore::IR::OpSize::i128Bit || RegisterSize == FEXCore::IR::OpSize::i256Bit",
          "Offset % IR::OpSizeToSize(RegisterSize) == 0"
        ]
+      },
+      "ContextClear u32:$Offset, u32:$Size": {
+        "Desc": [
+          "Clears a region of the context by CLZero size",
+          "Both the offset and size alignment need to be by CLZero size"
+        ],
+        "HasSideEffects": true,
+        "EmitValidation": [
+          "Offset % 64 == 0",
+          "Size % 64 == 0"
+        ]
      }
    },
    "Atomic": {
@@ -930,11 +947,15 @@
        ]
      },

-      "GPR = Constant i64:$Constant": {
+      "GPR = Constant i64:$Constant, ConstPad:$Pad{IR::ConstPad::NoPad}, i32:$MaxBytes{0}": {
        "Desc": ["Generates a 64bit constant inside of a GPR",
                 "Unsupported to create a constant in FPR"
                ],
-        "DestSize": "OpSize::i64Bit"
+        "DestSize": "OpSize::i64Bit",
+        "EmitValidation": [
+          "MaxBytes >= 0 && MaxBytes <= 8 && (MaxBytes & 1) == 0",
+          "MaxBytes == 0 || (Constant >> (MaxBytes * 8)) == 0"
+        ]
      },

      "InlineConstant i64:$Constant": {
@@ -2141,6 +2162,14 @@
        ]
      },

+      "FPR = VOrn OpSize:#RegisterSize, OpSize:#ElementSize, FPR:$Vector1, FPR:$Vector2": {
+        "DestSize": "RegisterSize",
+        "ElementSize": "ElementSize",
+        "EmitValidation": [
+          "RegisterSize == FEXCore::IR::OpSize::i256Bit || RegisterSize == FEXCore::IR::OpSize::i128Bit || RegisterSize == FEXCore::IR::OpSize::i64Bit"
+        ]
+      },
+
      "FPR = VOr OpSize:#RegisterSize, OpSize:#ElementSize, FPR:$Vector1, FPR:$Vector2": {
        "DestSize": "RegisterSize",
        "ElementSize": "ElementSize",
@@ -149,6 +149,17 @@ static void PrintArg(fextl::stringstream* out, const IRListView*, RoundMode Arg)
  }();
 }

+static void PrintArg(fextl::stringstream* out, const IRListView*, ConstPad Arg) {
+  *out << [Arg] {
+    switch (Arg) {
+    case ConstPad::NoPad: return "NoPad";
+    case ConstPad::DoPad: return "DoPad";
+    case ConstPad::AutoPad: return "AutoPad";
+    }
+    return "<Unknown ConstPad Type>";
+  }();
+}
+
 static void PrintArg(fextl::stringstream* out, const IRListView*, NamedVectorConstant Arg) {
  *out << [Arg] {
    // clang-format off
@@ -239,22 +239,33 @@ public:
  DEF_ADDSUB(AddWithFlags)
  DEF_ADDSUB(SubWithFlags)

-  int64_t Constants[32];
+  struct ConstantData {
+    int64_t Value;
+    ConstPad Pad;
+    int32_t MaxBytes;
+    [[nodiscard]] auto operator<=>(const ConstantData&) const noexcept = default;
+  };
+  ConstantData Constants[32];
  Ref ConstantRefs[32];
  uint32_t NrConstants;

-  Ref Constant(int64_t Value) {
+  Ref Constant(int64_t Value, ConstPad Pad = IR::ConstPad::NoPad, int32_t MaxBytes = 0) {
+    const ConstantData Data {
+      .Value = Value,
+      .Pad = Pad,
+      .MaxBytes = MaxBytes,
+    };
    // Search for the constant in the pool.
    for (unsigned i = 0; i < std::min(NrConstants, 32u); ++i) {
-      if (Constants[i] == Value) {
+      if (Constants[i] == Data) {
        return ConstantRefs[i];
      }
    }

    // Otherwise, materialize a fresh constant and pool it.
-    Ref R = _Constant(Value);
+    Ref R = _Constant(Value, Pad, MaxBytes);
    unsigned i = (NrConstants++) & 31;
-    Constants[i] = Value;
+    Constants[i] = Data;
    ConstantRefs[i] = R;
    return R;
  }
@@ -94,8 +94,9 @@ private:

    // Remat if we can
    if (Rematerializable(IROp)) {
-      uint64_t Const = IROp->C<IR::IROp_Constant>()->Constant;
-      return IREmit->_Constant(Const);
+      const auto Op = IROp->C<IR::IROp_Constant>();
+      uint64_t Const = Op->Constant;
+      return IREmit->_Constant(Const, Op->Pad, Op->MaxBytes);
    }

    // Otherwise fill from stack
@@ -59,7 +59,14 @@ void* FEX_mmap(void* addr, size_t length, int prot, int flags, int fd, off_t off
 }

 void VirtualName(const char* Name, void* Ptr, size_t Size) {
-  prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, Ptr, Size, Name);
+  static bool Supports {true};
+  if (Supports) {
+    auto Result = prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, Ptr, Size, Name);
+    if (Result == -1) {
+      // Disable any additional attempts.
+      Supports = false;
+    }
+  }
 }

 int FEX_munmap(void* addr, size_t length) {
@@ -72,71 +79,23 @@ int FEX_munmap(void* addr, size_t length) {
  return Result;
 }

-// This function disables glibc's ability to allocate memory through the `sbrk` interface.
-// This is run early in the lifecycle of FEX in order to make sure no 64-bit pointers can make it to the guest 32-bit application.
-//
-// How this works is that this allocates a single page at the current sbrk pointer (aligned upward to page size). This makes it
-// so that when the sbrk syscall is used to allocate more memory, it fails with an ENOMEM since it runs in to the allocated guard page.
-//
-// glibc notices the sbrk failure and falls back to regular mmap based allocations when this occurs. Ensuring that memory can still be allocated.
-void* DisableSBRKAllocations() {
-  void* INVALID_PTR = reinterpret_cast<void*>(~0ULL);
-  // Get the starting sbrk pointer.
-  void* StartingSBRK = sbrk(0);
-  if (StartingSBRK == INVALID_PTR) {
-    // If sbrk is already returning invalid pointers then nothing to do here.
-    return INVALID_PTR;
-  }
-
-  // Now allocate the next page after the sbrk address to ensure it can't grow.
-  // In most cases at the start of `main` this will already be page aligned, which means subsequent `sbrk`
-  // calls won't allocate any memory through that.
-  void* AlignedBRK = reinterpret_cast<void*>(FEXCore::AlignUp(reinterpret_cast<uintptr_t>(StartingSBRK), FEXCore::Utils::FEX_PAGE_SIZE));
-  void* AfterBRK =
-    ::mmap(AlignedBRK, FEXCore::Utils::FEX_PAGE_SIZE, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED_NOREPLACE | MAP_NORESERVE, -1, 0);
-  if (AfterBRK == INVALID_PTR) {
-    // Couldn't allocate the page after the aligned brk? This should never happen.
-    // FEXCore::LogMan isn't configured yet so we just need to print the message.
-    fextl::fmt::print("Couldn't allocate page after SBRK.\n");
-    FEX_TRAP_EXECUTION;
-    return INVALID_PTR;
-  }
-
-  // Now that the page after sbrk is allocated, FEX needs to consume the remaining sbrk space.
-  // This will be anywhere from [0, 4096) bytes.
-  // Start allocating from 1024 byte increments just to make any steps a bit faster.
-  intptr_t IncrementAmount = 1024;
-  for (; IncrementAmount != 0; IncrementAmount >>= 1) {
-    while (sbrk(IncrementAmount) != INVALID_PTR)
-      ;
-  }
-  return AlignedBRK;
-}
-
-void ReenableSBRKAllocations(void* Ptr) {
-  const void* INVALID_PTR = reinterpret_cast<void*>(~0ULL);
-  if (Ptr != INVALID_PTR) {
-    munmap(Ptr, FEXCore::Utils::FEX_PAGE_SIZE);
-  }
-}
-
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
-static void AssignHookOverrides() {
-  SetJemallocMmapHook(FEX_mmap);
-  SetJemallocMunmapHook(FEX_munmap);
+
+static void AssignHookOverrides(size_t PageSize) {
+  SetupAllocatorHooks(FEX_mmap, FEX_munmap);
  FEXCore::Allocator::mmap = FEX_mmap;
  FEXCore::Allocator::munmap = FEX_munmap;
+  InitializeAllocator(PageSize);
 }

-void SetupHooks() {
+void SetupHooks(size_t PageSize) {
  Alloc64 = Alloc::OSAllocator::Create64BitAllocator();
-  AssignHookOverrides();
+  AssignHookOverrides(PageSize);
 }

 void ClearHooks() {
-  SetJemallocMmapHook(::mmap);
-  SetJemallocMunmapHook(::munmap);
+  SetupAllocatorHooks(::mmap, ::munmap);
  FEXCore::Allocator::mmap = ::mmap;
  FEXCore::Allocator::munmap = ::munmap;

@@ -293,7 +252,8 @@ fextl::vector<MemoryRegion> StealMemoryRegion(uintptr_t Begin, uintptr_t End) {
      auto Alloc =
        ::mmap(StackRegionIt->Ptr, StackRegionIt->Size, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_NORESERVE | MAP_PRIVATE | MAP_FIXED, -1, 0);

-      LogMan::Throw::AFmt(Alloc != MAP_FAILED, "mmap({},{:x}) failed", fmt::ptr(StackRegionIt->Ptr), StackRegionIt->Size);
+      LogMan::Throw::AFmt(Alloc != MAP_FAILED, "StealMemoryRegion:Stack: mmap({}, {:x}) failed: {}", fmt::ptr(StackRegionIt->Ptr),
+                          StackRegionIt->Size, errno);
      LogMan::Throw::AFmt(Alloc == StackRegionIt->Ptr, "mmap returned {} instead of {}", Alloc, fmt::ptr(StackRegionIt->Ptr));

      Regions.erase(StackRegionIt);
@@ -304,14 +264,14 @@ fextl::vector<MemoryRegion> StealMemoryRegion(uintptr_t Begin, uintptr_t End) {
  for (auto RegionIt = Regions.begin(); RegionIt != Regions.end(); ++RegionIt) {
    auto Alloc = ::mmap(RegionIt->Ptr, RegionIt->Size, PROT_NONE, MAP_ANONYMOUS | MAP_NORESERVE | MAP_PRIVATE | MAP_FIXED_NOREPLACE, -1, 0);

-    LogMan::Throw::AFmt(Alloc != MAP_FAILED, "mmap({},{:x}) failed", fmt::ptr(RegionIt->Ptr), RegionIt->Size);
+    LogMan::Throw::AFmt(Alloc != MAP_FAILED, "StealMemoryRegion: mmap({}, {:x}) failed: {}", fmt::ptr(RegionIt->Ptr), RegionIt->Size, errno);
    LogMan::Throw::AFmt(Alloc == RegionIt->Ptr, "mmap returned {} instead of {}", Alloc, fmt::ptr(RegionIt->Ptr));
  }

  return Regions;
 }

-fextl::vector<MemoryRegion> Setup48BitAllocatorIfExists() {
+fextl::vector<MemoryRegion> Setup48BitAllocatorIfExists(size_t PageSize) {
  size_t Bits = FEXCore::Allocator::DetermineVASize();
  if (Bits < 48) {
    return {};
@@ -322,7 +282,7 @@ fextl::vector<MemoryRegion> Setup48BitAllocatorIfExists() {
  auto Regions = StealMemoryRegion(Begin48BitVA, End48BitVA);

  Alloc64 = Alloc::OSAllocator::Create64BitAllocatorWithRegions(Regions);
-  AssignHookOverrides();
+  AssignHookOverrides(PageSize);

  return Regions;
 }
@@ -192,7 +192,7 @@ void OSAllocator_64Bit::DetermineVASize() {

  UPPER_BOUND = Size;

-#if _M_X86_64 // Last page cannot be allocated on x86
+#if ARCHITECTURE_x86_64 // Last page cannot be allocated on x86
  UPPER_BOUND -= FEXCore::Utils::FEX_PAGE_SIZE;
 #endif

@@ -1,59 +1,175 @@
 // SPDX-License-Identifier: MIT
-#ifdef ENABLE_JEMALLOC
-#include <jemalloc/jemalloc.h>
+#ifdef ENABLE_FEX_ALLOCATOR
+#include <rpmalloc/rpmalloc.h>
+#ifndef _WIN32
+#include <linux/prctl.h>
+#include <sys/prctl.h>
+#include <sys/mman.h>
+#else
+#define NTDDI_VERSION 0x0A000005
+#include <memoryapi.h>
+#endif
 #endif

+#include <cstdint>
 #include <malloc.h>
 #include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>

 namespace FEXCore::Allocator {
-
-#ifndef _WIN32
 using mmap_hook_type = void* (*)(void* addr, size_t length, int prot, int flags, int fd, off_t offset);
 using munmap_hook_type = int (*)(void* addr, size_t length);
+
+#ifdef ENABLE_FEX_ALLOCATOR
+typedef void* (*rp_mmap_hook_type)(size_t size, size_t alignment, size_t* offset, size_t* mapped_size);
+typedef void (*rp_munmap_hook_type)(void* address, size_t offset, size_t mapped_size);
+extern "C" rp_mmap_hook_type rp_mmap_hook;
+extern "C" rp_munmap_hook_type rp_munmap_hook;
+
+#ifndef _WIN32
+mmap_hook_type fex_mmap_hook = ::mmap;
+munmap_hook_type fex_munmap_hook = ::munmap;
 #endif

-#ifdef ENABLE_JEMALLOC
+// Assume a 64KB page size until told otherwise.
+static rpmalloc_config_t global_config {
+  .page_size = 64 * 1024,
+  // THP causes crashes for some reason.
+  .enable_huge_pages = 0,
+  .disable_decommit = 0,
+  .page_name = "FEXAllocator",
+  .huge_page_name = "FEXAllocator",
+  .unmap_on_finalize = 0,
+};
+
 void* malloc(size_t size) {
-  return ::je_malloc(size);
+  return ::rpmalloc(size);
 }
 void* calloc(size_t n, size_t size) {
-  return ::je_calloc(n, size);
+  return ::rpcalloc(n, size);
 }
 void* memalign(size_t align, size_t s) {
-  return ::je_memalign(align, s);
+  return ::rpmemalign(align, s);
 }
 void* valloc(size_t size) {
-  return ::je_valloc(size);
+  return ::rpaligned_alloc(global_config.page_size, size);
 }
 int posix_memalign(void** r, size_t a, size_t s) {
-  return ::je_posix_memalign(r, a, s);
+  void* ptr;
+  auto res = ::rpposix_memalign(&ptr, a, s);
+  *r = ptr;
+  return res;
 }
 void* realloc(void* ptr, size_t size) {
-  return ::je_realloc(ptr, size);
+  return ::rprealloc(ptr, size);
 }
 void free(void* ptr) {
-  return ::je_free(ptr);
+  return ::rpfree(ptr);
 }
 size_t malloc_usable_size(void* ptr) {
-  return ::je_malloc_usable_size(ptr);
+  return ::rpmalloc_usable_size(ptr);
 }
 void* aligned_alloc(size_t a, size_t s) {
-  return ::je_aligned_alloc(a, s);
+  return ::rpaligned_alloc(a, s);
 }
 void aligned_free(void* ptr) {
-  return ::je_free(ptr);
+  return ::rpfree(ptr);
+}
+
+void InitializeThread() {
+  rpmalloc_thread_initialize();
 }

 #ifndef _WIN32
-extern "C" mmap_hook_type je___mmap_hook;
-extern "C" munmap_hook_type je___munmap_hook;
-
-void SetJemallocMmapHook(mmap_hook_type Hook) {
-  je___mmap_hook = Hook;
+[[nodiscard]]
+constexpr uint64_t AlignUp(uint64_t value, uint64_t size) {
+  return value + (size - value % size) % size;
 }
-void SetJemallocMunmapHook(munmap_hook_type Hook) {
-  je___munmap_hook = Hook;
+
+static void* FEX_rp_mmap(size_t size, size_t alignment, size_t* offset, size_t* mapped_size) {
+#define pointer_offset(ptr, ofs) (void*)((char*)(ptr) + (ptrdiff_t)(ofs))
+  // If the alignment is less than the operating page size then alignment is guaranteed. Just remove it.
+  if (alignment < global_config.page_size) {
+    alignment = 0;
+  }
+
+  size_t map_size = AlignUp(size + alignment, global_config.page_size);
+  auto ptr = fex_mmap_hook(0, map_size, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
+
+  if (ptr == MAP_FAILED) {
+    ptr = nullptr;
+  } else {
+#ifndef PR_SET_VMA
+#define PR_SET_VMA 0x53564d41
+#endif
+
+#ifndef PR_SET_VMA_ANON_NAME
+#define PR_SET_VMA_ANON_NAME 0
+#endif
+    prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, ptr, map_size, global_config.page_name);
+  }
+
+  if (ptr == nullptr) {
+    fprintf(stderr, "Failed to map VMA region.");
+    return nullptr;
+  }
+
+  if (alignment) {
+    size_t padding = ((uintptr_t)ptr & (uintptr_t)(alignment - 1));
+    if (padding) {
+      padding = alignment - padding;
+    }
+    ptr = pointer_offset(ptr, padding);
+    *offset = padding;
+  }
+  *mapped_size = map_size;
+  return ptr;
+}
+
+static void FEX_rp_memory_commit(void* address, size_t size) {
+  // NOP-implementation.
+}
+
+static void FEX_rp_memory_decommit(void* address, size_t size) {
+  if (global_config.disable_decommit) {
+    return;
+  }
+
+  if (madvise(address, size, MADV_DONTNEED)) {
+    fprintf(stderr, "Failed to decommit VMA region.");
+  }
+}
+
+static void FEX_rp_memory_unmap(void* address, size_t offset, size_t mapped_size) {
+  address = pointer_offset(address, -(int32_t)offset);
+  int Result = fex_munmap_hook(address, mapped_size);
+  if (Result == -1) {
+    fprintf(stderr, "Failed to unmap VMA region.");
+  }
+#undef pointer_offset
+}
+
+void SetupAllocatorHooks(mmap_hook_type MMapHook, munmap_hook_type MunmapHook) {
+  fex_mmap_hook = MMapHook;
+  fex_munmap_hook = MunmapHook;
+}
+
+static rpmalloc_interface_t global_interface {
+  .memory_map = FEX_rp_mmap,
+  .memory_commit = FEX_rp_memory_commit,
+  .memory_decommit = FEX_rp_memory_decommit,
+  .memory_unmap = FEX_rp_memory_unmap,
+  .map_fail_callback = nullptr,
+  .error_callback = nullptr,
+};
+
+void InitializeAllocator(size_t PageSize) {
+  global_config.page_size = PageSize;
+  rpmalloc_initialize_config(&global_interface, &global_config);
+  rp_mmap_hook = FEX_rp_mmap;
+  rp_munmap_hook = FEX_rp_memory_unmap;
 }
 #endif

@@ -61,6 +177,8 @@ void SetJemallocMunmapHook(munmap_hook_type Hook) {
 #error "Tried building _WIN32 without jemalloc"

 #else
+void InitializeThread() {}
+
 void* malloc(size_t size) {
  return ::malloc(size);
 }
@@ -92,8 +210,9 @@ void aligned_free(void* ptr) {
  return ::free(ptr);
 }

-void SetJemallocMmapHook(mmap_hook_type) {}
-void SetJemallocMunmapHook(munmap_hook_type) {}
+void SetupAllocatorHooks(mmap_hook_type MMapHook, munmap_hook_type MunmapHook) {}
+
+void InitializeAllocator(size_t PageSize) {}

 #endif
 } // namespace FEXCore::Allocator
@@ -1923,7 +1923,7 @@ static uint64_t HandleAtomicLoadstoreExclusive(uintptr_t ProgramCounter, uint64_
 [[nodiscard]]
 std::optional<int32_t> HandleUnalignedAccess(FEXCore::Core::InternalThreadState* Thread, UnalignedHandlerType HandleType,
                                             uintptr_t ProgramCounter, uint64_t* GPRs, bool IsJIT) {
-#ifdef _M_ARM_64
+#ifdef ARCHITECTURE_arm64
  constexpr bool is_arm64 = true;
 #else
  constexpr bool is_arm64 = false;
@@ -5,7 +5,7 @@

 namespace FEXCore::ArchHelpers::Arm64 {

-#ifndef _M_ARM_64
+#ifndef ARCHITECTURE_arm64
 // These are stub implementations that exist only to allow instantiating the arm64 jit
 // on non arm platforms.

@@ -39,8 +39,10 @@ static bool LoadFileImpl(T& Data, const fextl::string& Filepath, size_t FixedSiz
  if (FileSize) {
    // File size is known upfront
    Data.resize(FileSize);
-    while (CurrentOffset != FileSize && (Read = pread(FD, &Data.at(CurrentOffset), FileSize, 0)) > 0) {
+    size_t Remaining = FileSize;
+    while (CurrentOffset != FileSize && (Read = pread(FD, &Data.at(CurrentOffset), Remaining, CurrentOffset)) > 0) {
      CurrentOffset += Read;
+      Remaining -= Read;
    }

    LoadedFile = CurrentOffset == FileSize && Read != -1;
@@ -3,7 +3,7 @@ namespace FEXCore::Assert {
 // This function can not be inlined
 [[noreturn]]
 __attribute__((noinline, naked)) void ForcedAssert() {
-#ifdef _M_X86_64
+#ifdef ARCHITECTURE_x86_64
  asm volatile("ud2");
 #else
  asm volatile("hlt #1");
@@ -5,7 +5,7 @@
 #include <cstring>

 namespace FEXCore::UncheckedLongJump {
-#if defined(_M_ARM_64)
+#if defined(ARCHITECTURE_arm64)
 [[nodiscard]]
 FEX_DEFAULT_VISIBILITY FEX_NAKED uint64_t SetJump(JumpBuf& Buffer) {
  __asm volatile(R"(
@@ -20,13 +20,13 @@ public:
  }

  uintptr_t GetConvertedPointer() const {
-#ifdef _M_X86_64
+#ifdef ARCHITECTURE_x86_64
    // Itanium C++ ABI (https://itanium-cxx-abi.github.io/cxx-abi/abi.html#member-function-pointers)
    // Low bit of ptr specifies if this Member function pointer is virtual or not
    // Throw an assert if we were trying to cast a virtual member
    LOGMAN_THROW_A_FMT((PMF.ptr & 1) == 0, "C++ Pointer-To-Member representation didn't have low bit set to 0. Are you trying to cast a "
                                           "virtual member?");
-#elif defined(_M_ARM_64)
+#elif defined(ARCHITECTURE_arm64)
    // C++ ABI for the Arm 64-bit Architecture (IHI 0059E)
    // 4.2.1 Representation of pointer to member function
    // Differs from Itanium specification
@@ -39,14 +39,14 @@ public:

  // Gets the vtable entry position of a virtual member function.
  size_t GetVTableOffset() const {
-#ifdef _M_X86_64
+#ifdef ARCHITECTURE_x86_64
    // Itanium C++ ABI (https://itanium-cxx-abi.github.io/cxx-abi/abi.html#member-function-pointers)
    // Low bit of ptr specifies if this Member function pointer is virtual or not
    // Throw an assert if we are not loading a virtual member.
    LOGMAN_THROW_A_FMT((PMF.ptr & 1) == 1, "C++ Pointer-To-Member representation didn't have low bit set to 1. This cast only works for "
                                           "virtual members.");
    return PMF.ptr & ~1ULL;
-#elif defined(_M_ARM_64)
+#elif defined(ARCHITECTURE_arm64)
    // C++ ABI for the Arm 64-bit Architecture (IHI 0059E)
    // 4.2.1 Representation of pointer to member function
    // Differs from Itanium specification
@@ -2,7 +2,7 @@
 #include "Utils/SpinWaitLock.h"

 namespace FEXCore::Utils::SpinWaitLock {
-#ifdef _M_ARM_64
+#ifdef ARCHITECTURE_arm64
 constexpr uint64_t NanosecondsInSecond = 1'000'000'000ULL;

 static uint32_t GetCycleCounterFrequency() {
@@ -29,7 +29,7 @@ namespace FEXCore::Utils::SpinWaitLock {
 *
 * On non-ARM platforms it is truly a spin-loop, which is okay for debugging only.
 */
-#ifdef _M_ARM_64
+#ifdef ARCHITECTURE_arm64

 #define LOADEXCLUSIVE(LoadExclusiveOp, RegSize)                 \
  /* Prime the exclusive monitor with the passed in address. */ \
@@ -5,10 +5,6 @@

 #include <pthread.h>
 #include <unistd.h>
-#ifndef _WIN32
-#include <sys/signal.h>
-#include <sys/syscall.h>
-#endif

 namespace FEXCore::Threads {
 static fextl::unique_ptr<FEXCore::Threads::Thread> CreateThread_Default(ThreadFunc Func, void* Arg) {
@@ -35,21 +31,4 @@ void FEXCore::Threads::Thread::CleanupAfterFork() {
 void FEXCore::Threads::Thread::SetInternalPointers(const Pointers& _Ptrs) {
  Ptrs = _Ptrs;
 }
-
-uint64_t SetSignalMask(uint64_t Mask) {
-#ifndef _WIN32
-  ::syscall(SYS_rt_sigprocmask, SIG_SETMASK, &Mask, &Mask, 8);
-  return Mask;
-#else
-  return 0;
-#endif
-}
-
-void SetThreadName(const char* name) {
-#ifndef _WIN32
-  pthread_setname_np(pthread_self(), name);
-#else
-  // TODO:
-#endif
-}
 } // namespace FEXCore::Threads
@@ -65,6 +65,7 @@ public:
      LOGMAN_THROW_A_FMT((Desired & WRITE_WAITER_COUNT_MASK) != 0, "Overflow in write-waiters!");
    } while (AtomicFutex.compare_exchange_strong(Expected, Desired, std::memory_order_acq_rel, std::memory_order_acquire) == false);
 #else
+    // Increment the number of writers waiting. The following loop will attempt to acquire the write-lock while decrementing the waiter count.
    Expected = AtomicFutex.fetch_add(WRITE_WAITER_INCREMENT);
    Desired = Expected + WRITE_WAITER_INCREMENT;
 #endif
@@ -101,6 +102,15 @@ public:
        LOGMAN_THROW_A_FMT((Desired & WRITE_OWNED_BIT) == WRITE_OWNED_BIT, "Somehow acquired a write-lock without it being set!");
        return;
      }
+
+      // Two paths to get here.
+      // Desired[31] = 1 (WRITE_OWNED_BIT)
+      // OR
+      // Desired[15:0] != 0 (READ_OWNER_COUNT_MASK)
+      // Meaning that there was already a writer that owned the lock, or reads were owning it.
+      // This thread already incremented `WRITE_WAITER_INCREMENT` before this loop.
+      // - Linux waits for the full 32-bits to change (With bitset wakeup).
+      // - Win32 also waits for the full 32-bits to change (with offset addr on the reader side to reduce stampeding).
      FutexWaitForWriteAvailable(Desired);

      Expected = AtomicFutex.load(std::memory_order_relaxed);
@@ -145,6 +155,12 @@ public:
        return;
      }

+      // Only one path to get here.
+      // Desired[31][29:16] != 0 (Either writer-owned, or writer-waiting)
+      // Desired[30][15:0]  == READ_WAIT_BIT and number of read-owners (draining to zero as write-side is set)
+      // - Linux waits for full 32-bit futex.
+      // - Win32 waits for upper 16-bits to not match (Either zero writer owned, writer-wait is draining, and `READ_WAITER_BIT` changed).
+      // Can get some spurious wake-ups which will `or` the `READ_WAITER_BIT` again, which does nothing.
      FutexWaitForReadAvailable(Desired);

      Expected = AtomicFutex.load(std::memory_order_relaxed);
@@ -167,7 +183,12 @@ public:
      }
    } while (AtomicFutex.compare_exchange_strong(Expected, Desired, std::memory_order_acq_rel, std::memory_order_acquire) == false);

-    // If success, then `Expected` has old value. Containing `READ_WAITER_BIT` which was just masked off, and also `WRITE_WAITER_COUNT_MASK`.
+    // `Expected` has old value. Containing `READ_WAITER_BIT` which was just masked off, and also `WRITE_WAITER_COUNT_MASK`.
+    //
+    // Two paths here to be careful about dead-locking other waiters:
+    // - If there are any writers waiting, those get priority to wake.
+    // - If there are zero writers waiting, and there are read waiters then make sure to wake them all.
+    // Failure to send wake events can cause readers to "infinitely" hang! (ignoring spurious wake-up).
    if ((Expected & WRITE_WAITER_COUNT_MASK)) {
      // Handle write-write handoff.
      FutexWakeWriter();
@@ -195,6 +216,11 @@ public:
 #endif

    // Handle read->write handoff if there are any waiting writers, and no readers left.
+    // Only one path here but still need to be careful to not dead-lock waiting writers.
+    // - If there are waiters /but/ this is not the final unlock_shared, then don't wake writer.
+    //   - Writer would wake and immediately sleep again if we woke on every unlock_shared.
+    // - If there are waiters and this is the final unlock_shared, then wake a /single/ writer.
+    // - We ignore any reader-waiters here as they must wait their turn for writers that are waiting.
    if ((Desired & WRITE_WAITER_COUNT_MASK) && (Desired & READ_OWNER_COUNT_MASK) == 0) {
      FutexWakeWriter();
    }
@@ -291,7 +317,7 @@ private:
  // WFE-read-lock is actually quite likely to succeed.
  // Return: true if the lock was acquired.
  bool Attempt_WFE_WriteLock() {
-#ifdef _M_ARM_64
+#ifdef ARCHITECTURE_arm64
    const auto Begin = FEXCore::Utils::SpinWaitLock::GetCycleCounter();
    auto Now = Begin;
    const auto Duration = FEXCore::Utils::SpinWaitLock::CycleCounterFrequency / CYCLECOUNT_DIVISOR;
@@ -320,7 +346,7 @@ private:

  // Return: true if the lock was acquired.
  bool Attempt_WFE_ReadLock() {
-#ifdef _M_ARM_64
+#ifdef ARCHITECTURE_arm64
    // Spin on a WFE for a short-amount of time, waiting for write-owned and writer-count to be zero.
    //  - Attempt to acquire read-lock at that point.
    //  - Don't add read-waiters bit on failure, return false.
@@ -353,14 +379,14 @@ private:
  }

  constexpr static uint32_t WRITE_OWNED_BIT = 1U << 31;
-  constexpr static uint32_t READ_WAITER_BIT = 1U << 15;
+  constexpr static uint32_t READ_WAITER_BIT = 1U << 30;
  constexpr static uint32_t WRITE_WAITER_OFFSET = 16;
  constexpr static uint32_t WRITE_WAITER_INCREMENT = 1U << WRITE_WAITER_OFFSET;
  constexpr static uint32_t READ_OWNER_INCREMENT = 1;

  // Count masks
-  constexpr static uint32_t WRITE_WAITER_COUNT_MASK = 0x7FFFU << WRITE_WAITER_OFFSET;
-  constexpr static uint32_t READ_OWNER_COUNT_MASK = 0x7FFFU;
+  constexpr static uint32_t WRITE_WAITER_COUNT_MASK = 0x3FFFU << WRITE_WAITER_OFFSET;
+  constexpr static uint32_t READ_OWNER_COUNT_MASK = 0xFFFFU;

  // Independent futex bit-set masks.
  // Wait for readers to drain.
@@ -373,9 +399,9 @@ private:

  // Layout:
  //    Bits[31]: Write-lock bit.
-  // Bits[30:16]: Write-waiter count.
-  //    Bits[15]: Read-waiter bit.
-  //  Bits[14:0]: Read-owner count.
+  //    Bits[30]: Read-waiter bit.
+  // Bits[29:16]: Write-waiter count.
+  //  Bits[15:0]: Read-owner count.
  uint32_t Futex {};
 };
 } // namespace FEXCore::Utils::WritePriorityMutex
@@ -31,16 +31,6 @@ namespace Handler {
    }
    return "0";
  }
-  static inline std::optional<fextl::string> CacheObjectCodeHandler(std::string_view Value) {
-    if (Value == "none") {
-      return "0";
-    } else if (Value == "read") {
-      return "1";
-    } else if (Value == "write") {
-      return "2";
-    }
-    return "0";
-  }
 } // namespace Handler

 enum ConfigOption {
@@ -7,6 +7,7 @@
 #include <FEXCore/fextl/set.h>
 #include <FEXCore/fextl/string.h>
 #include <FEXCore/fextl/vector.h>
+#include <FEXCore/fextl/robin_map.h>

 #include <atomic>
 #include <cstdint>
@@ -26,6 +27,8 @@ namespace HLE {
  struct SourcecodeMap;
 } // namespace HLE

+enum class GuestRelocationType : uint32_t { Rel32, Rel64 };
+
 // Generic information associated with an executable file.
 struct ExecutableFileInfo {
  ~ExecutableFileInfo();
@@ -36,17 +39,27 @@ struct ExecutableFileInfo {
  ExecutableFileInfo() = default;
 #endif

-  fextl::unique_ptr<HLE::SourcecodeMap> SourcecodeMap;
+  // This legacy field must be assignable through const-references
+  mutable fextl::unique_ptr<HLE::SourcecodeMap> SourcecodeMap;
+
  uint64_t FileId = 0;
  fextl::string Filename;
+  fextl::robin_map<uint32_t, GuestRelocationType> Relocations;
 };

 // Information associated with a specific section of an executable file
 struct ExecutableFileSectionInfo {
-  ExecutableFileInfo& FileInfo;
+  const ExecutableFileInfo& FileInfo;

  // Start address that the file is mapped to.
+  // NOTE: Since executable files may be mapped multiple times, this can depend on the queried section.
  uintptr_t FileStartVA;
+
+  // Start address of the section mapping
+  uintptr_t BeginVA;
+
+  // End address that of the section mapping
+  uintptr_t EndVA;
 };

 using CodeMapFileId = uint64_t;
@@ -175,8 +188,9 @@ public:
  /**
   * Loads a code cache from mapped memory and appends it to the current Core state.
   * TODO: Optionally recompiles all contained code blocks at runtime for validation.
+   * Returns false if the provided cache file is invalid, and true otherwise.
   */
-  virtual void LoadData(Core::InternalThreadState&, std::byte* MappedCacheFile, const ExecutableFileSectionInfo&) = 0;
+  virtual bool LoadData(Core::InternalThreadState*, std::byte* MappedCacheFile, const ExecutableFileSectionInfo&) = 0;

  /**
   * Bundles the current Core state (CodeBuffer, GuestToHostMapping, ...) to a code cache and writes it to the given file descriptor.