Merge remote-tracking branch 'Kernel/multiboot2_64' into Kernel-multiboot2_64

.github/FUNDING.yml

@@ -3,7 +3,7 @@
 github: # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
 patreon: # Replace with a single Patreon username
 open_collective: # Replace with a single Open Collective username
-ko_fi: # Replace with a single Ko-fi username
+ko_fi: EnderIce2 # Replace with a single Ko-fi username
 tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
 community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
 liberapay: # Replace with a single Liberapay username

.github/workflows/codeql.yml

@@ -1,86 +0,0 @@
-name: "CodeQL Advanced"
-
-on:
-  push:
-    branches: [ "master" ]
-  pull_request:
-    branches: [ "master" ]
-  schedule:
-    - cron: '27 20 * * 0'
-
-jobs:
-  analyze:
-    name: Analyze (${{ matrix.language }})
-    runs-on: ubuntu-latest
-    permissions:
-      security-events: write
-      packages: read
-      actions: read
-      contents: read
-
-    defaults:
-      run:
-        shell: bash
-
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-        - language: c-cpp
-          build-mode: manual
-
-    steps:
-    - name: Checkout repository
-      uses: actions/checkout@v4
-
-    - name: Check for cache
-      id: check-cache
-      run: |
-        if [ -z "${{ runner.os }}-cross-${{ hashFiles('tools/Makefile') }}" ]; then
-          echo "No cache found, cancelling job."
-          exit 1
-        fi
-
-    - name: Initialize CodeQL
-      uses: github/codeql-action/init@v3
-      with:
-        languages: ${{ matrix.language }}
-        build-mode: ${{ matrix.build-mode }}
-
-    - if: matrix.build-mode == 'manual'
-      shell: bash
-      run: |
-        echo 'If you are using a "manual" build mode for one or more of the' \
-          'languages you are analyzing, replace this with the commands to build' \
-          'your code, for example:'
-        echo '  make bootstrap'
-        echo '  make release'
-        exit 0
-
-    - name: Install Packages
-      run: |
-        sudo apt update
-        sudo apt -y install rustc xorriso mtools genisoimage ovmf nasm doxygen make gcc-mingw-w64-x86-64 gcc-mingw-w64-i686 mingw-w64 build-essential bison flex libgmp3-dev libmpc-dev libmpfr-dev texinfo
-        make --quiet -C tools do_limine
-        make --quiet -C Drivers prepare
-        make --quiet -C Userspace prepare
-        make --quiet -C Kernel prepare
-
-    - name: Cache cross
-      id: cache-cross
-      uses: actions/cache@v3
-      with:
-        path: tools/cross
-        key: ${{ runner.os }}-cross-${{ hashFiles('tools/Makefile') }}
-
-    - name: Build OS
-      run: |
-        make build_userspace
-        make build_drivers
-        make build_kernel
-        make build_userspace
-
-    - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v3
-      with:
-        category: "/language:${{matrix.language}}"

.github/workflows/docs.yml

@@ -1,34 +0,0 @@
-name: Deploy Documentation
-
-on:
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
-
-jobs:
-  deploydoc:
-    name: Deploy Documentation to GitHub Pages
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v3
-        with:
-          submodules: recursive
-
-      - name: Update System
-        run: sudo apt update
-
-      - name: Install Doxygen
-        run: sudo apt -y install doxygen make
-
-      - name: Generate Documentation
-        run: make doxygen
-
-      - name: Copy GitHub Pages Website
-        run: cp -r tools/website/* doxygen-doc/
-
-      - name: Deploy documentation
-        uses: JamesIves/github-pages-deploy-action@v4
-        with:
-          folder: doxygen-doc

.github/workflows/makefile.yml

@@ -7,6 +7,29 @@ on:
     branches: [ master ]
 
 jobs:
+  deploydoc:
+    name: Deploy Documentation to GitHub Pages
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+        with:
+          submodules: recursive
+
+      - name: Install Doxygen
+        run: sudo apt-get install doxygen make -y
+
+      - name: Generate Documentation
+        run: make doxygen
+
+      - name: Copy GitHub Pages Website
+        run: cp -r tools/website/* doxygen-doc/
+
+      - name: Deploy documentation
+        uses: JamesIves/github-pages-deploy-action@v4
+        with:
+          folder: doxygen-doc
+
   buildcompiler:
     name: Build Cross-Compiler & Toolchain
     runs-on: ubuntu-latest
@@ -24,56 +47,129 @@ jobs:
 
     - name: Update System
       if: steps.cache-cross.outputs.cache-hit != 'true'
-      run: sudo apt update
+      run: sudo apt-get update
 
     - name: Install GCC Dependencies
       if: steps.cache-cross.outputs.cache-hit != 'true'
-      run: sudo apt -y install build-essential bison flex libgmp3-dev libmpc-dev libmpfr-dev texinfo libzstd-dev libisl-dev m4 automake gettext gperf dejagnu guile-3.0 guile-3.0-dev expect tcl autogen tex-common sphinx-common git ssh diffutils patch autoconf2.69 libtool wget dpkg
-
-    - name: Check autoconf
-      if: steps.cache-cross.outputs.cache-hit != 'true'
-      run: |
-        if [ "$(autoconf --version | head -n 1 | awk '{print $NF}')" != "2.69" ]; then
-          echo "Autoconf version is not 2.69, performing additional steps..."
-          wget https://launchpad.net/ubuntu/+archive/primary/+files/autoconf_2.69-11.1_all.deb
-          sudo dpkg --force-all -i ./autoconf_2.69-11.1_all.deb
-        fi
-
-    - name: Check automake
-      if: steps.cache-cross.outputs.cache-hit != 'true'
-      run: |
-        if [ "$(automake --version | head -n 1 | awk '{print $NF}')" != "1.15.1" ]; then
-          echo "Automake version is not 1.15.1, performing additional steps..."
-          wget https://ftp.gnu.org/gnu/automake/automake-1.15.1.tar.gz
-          tar -xzf automake-1.15.1.tar.gz
-          cd automake-1.15.1
-          ./configure
-          make
-          sudo make install
-        fi
+      run: sudo apt install build-essential bison flex libgmp3-dev libmpc-dev libmpfr-dev texinfo libzstd-dev libisl-dev autoconf m4 automake gettext gperf dejagnu guile-3.0 guile-3.0-dev expect tcl autogen tex-common sphinx-common git ssh diffutils patch -y
 
     - name: Clone All
       if: steps.cache-cross.outputs.cache-hit != 'true'
       run: make --quiet -C tools __clone_all_no_qemu
 
-    - name: Compile Binutils
+    - name: Compile Binutils amd64
       if: steps.cache-cross.outputs.cache-hit != 'true'
-      run: make --quiet -C tools do_binutils
+      run: make --quiet -C tools do_binutils_64
 
-    - name: Compile GCC
+    - name: Compile Binutils i386
       if: steps.cache-cross.outputs.cache-hit != 'true'
-      run: make --quiet -C tools do_gcc
+      run: make --quiet -C tools do_binutils_32
+
+    - name: Compile GCC amd64
+      if: steps.cache-cross.outputs.cache-hit != 'true'
+      run: make --quiet -C tools do_gcc_64
+
+    - name: Compile GCC i386
+      if: steps.cache-cross.outputs.cache-hit != 'true'
+      run: make --quiet -C tools do_gcc_32
 
     - name: Clean Up
       if: steps.cache-cross.outputs.cache-hit != 'true'
       run: |
         cd tools
-        rm -rf binutils-gdb gcc
+        rm -rf binutils-gdb gcc build-binutils64 build-gcc64 build-binutils32 build-gcc32
+
+  compilegnuefi:
+    name: Build GNU-EFI
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        submodules: recursive
+
+    - name: Cache gnu-efi Folder
+      id: cache-gnuefi
+      uses: actions/cache@v3
+      with:
+        path: Lynx/gnu-efi
+        key: ${{ runner.os }}-gnuefi-${{ hashFiles('Lynx/Makefile') }}
+
+    - name: Update System
+      if: steps.cache-gnuefi.outputs.cache-hit != 'true'
+      run: sudo apt-get update
+
+    - name: Install MinGW compiler
+      if: steps.cache-gnuefi.outputs.cache-hit != 'true'
+      run: sudo apt-get install make gcc-mingw-w64-x86-64 gcc-mingw-w64-i686 mingw-w64 -y
+
+    - name: Get GNU-EFI source code and compile it
+      if: steps.cache-gnuefi.outputs.cache-hit != 'true'
+      run: make --quiet -C Lynx prepare
+
+  analyze:
+    name: Analyze with CodeQL
+    runs-on: ubuntu-latest
+    needs: [buildcompiler, compilegnuefi]
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'cpp' ]
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+      with:
+        submodules: recursive
+
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v2
+      with:
+        languages: ${{ matrix.language }}
+
+    - name: Install Packages
+      run: |
+        sudo apt-get update
+        sudo apt-get install rustc xorriso mtools genisoimage ovmf nasm doxygen make gcc-mingw-w64-x86-64 gcc-mingw-w64-i686 mingw-w64 build-essential bison flex libgmp3-dev libmpc-dev libmpfr-dev texinfo -y
+        make --quiet -C tools do_limine
+        make --quiet -C Drivers prepare
+        make --quiet -C Userspace prepare
+        make --quiet -C Lynx prepare
+        make --quiet -C Kernel prepare
+
+    - name: Cache cross
+      id: cache-cross
+      uses: actions/cache@v3
+      with:
+        path: tools/cross
+        key: ${{ runner.os }}-cross-${{ hashFiles('tools/Makefile') }}
+
+    - name: Cache gnuefi
+      id: cache-gnuefi
+      uses: actions/cache@v3
+      with:
+        path: Lynx/gnu-efi
+        key: ${{ runner.os }}-gnuefi-${{ hashFiles('Lynx/Makefile') }}
+
+    - name: Build OS
+      run: |
+        make build_lynx
+        make build_userspace
+        make build_drivers
+        make build_kernel
+        make build_userspace
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v2
 
   compile64:
     name: Build amd64
     runs-on: ubuntu-latest
-    needs: [buildcompiler]
+    needs: [buildcompiler, compilegnuefi]
     steps:
     - uses: actions/checkout@v3
       with:
@@ -81,11 +177,12 @@ jobs:
 
     - name: Update & Install Required Packages
       run: |
-        sudo apt update
-        sudo apt install rustc xorriso mtools genisoimage ovmf nasm doxygen make meson gcc-10 g++-10 gcc-mingw-w64-x86-64 gcc-mingw-w64-i686 mingw-w64 -y
+        sudo apt-get update
+        sudo apt-get install rustc xorriso mtools genisoimage ovmf nasm doxygen make meson gcc-10 g++-10 gcc-mingw-w64-x86-64 gcc-mingw-w64-i686 mingw-w64 -y
         make --quiet -C tools do_limine
         make --quiet -C Drivers prepare
         make --quiet -C Userspace prepare
+        make --quiet -C Lynx prepare
         make --quiet -C Kernel prepare
 
     - name: Cache cross Folder
@@ -95,15 +192,22 @@ jobs:
         path: tools/cross
         key: ${{ runner.os }}-cross-${{ hashFiles('tools/Makefile') }}
 
-    - name: Configure config.mk
-      run: sed -i 's/.*OSARCH = .*/OSARCH = amd64/' ./config.mk && cat config.mk | grep OSARCH
+    - name: Cache gnu-efi Folder
+      id: cache-gnuefi
+      uses: actions/cache@v3
+      with:
+        path: Lynx/gnu-efi
+        key: ${{ runner.os }}-gnuefi-${{ hashFiles('Lynx/Makefile') }}
+
+    - name: Configure Makefile.conf
+      run: sed -i 's/.*OSARCH = .*/OSARCH = amd64/' ./Makefile.conf && cat Makefile.conf | grep OSARCH
 
     - name: Compile Debug and Release ISO
       run: |
         make build
         mv Fennix.iso Fennix-debug.iso
         make clean
-        sed -i 's/.*DEBUG = .*/DEBUG = 0/' ./config.mk && cat config.mk | grep DEBUG
+        sed -i 's/.*DEBUG = .*/DEBUG = 0/' ./Makefile.conf && cat Makefile.conf | grep DEBUG
         make build
         mv Fennix.iso Fennix-release.iso
 
@@ -122,7 +226,7 @@ jobs:
   compile32:
     name: Build i386
     runs-on: ubuntu-latest
-    needs: [buildcompiler]
+    needs: [buildcompiler, compilegnuefi]
     steps:
     - uses: actions/checkout@v3
       with:
@@ -130,11 +234,12 @@ jobs:
 
     - name: Update & Install Required Packages
       run: |
-        sudo apt update
-        sudo apt install rustc xorriso mtools genisoimage ovmf nasm doxygen make meson gcc-10 g++-10 gcc-mingw-w64-x86-64 gcc-mingw-w64-i686 mingw-w64 -y
+        sudo apt-get update
+        sudo apt-get install rustc xorriso mtools genisoimage ovmf nasm doxygen make meson gcc-10 g++-10 gcc-mingw-w64-x86-64 gcc-mingw-w64-i686 mingw-w64 -y
         make --quiet -C tools do_limine
         make --quiet -C Drivers prepare
         make --quiet -C Userspace prepare
+        make --quiet -C Lynx prepare
         make --quiet -C Kernel prepare
 
     - name: Cache cross Folder
@@ -144,15 +249,22 @@ jobs:
         path: tools/cross
         key: ${{ runner.os }}-cross-${{ hashFiles('tools/Makefile') }}
 
-    - name: Configure config.mk
-      run: sed -i 's/.*OSARCH = .*/OSARCH = i386/' ./config.mk && cat config.mk | grep OSARCH
+    - name: Cache gnu-efi Folder
+      id: cache-gnuefi
+      uses: actions/cache@v3
+      with:
+        path: Lynx/gnu-efi
+        key: ${{ runner.os }}-gnuefi-${{ hashFiles('Lynx/Makefile') }}
+
+    - name: Configure Makefile.conf
+      run: sed -i 's/.*OSARCH = .*/OSARCH = i386/' ./Makefile.conf && cat Makefile.conf | grep OSARCH
 
     - name: Compile Debug and Release ISO
       run: |
         make build
         mv Fennix.iso Fennix-debug.iso
         make clean
-        sed -i 's/.*DEBUG = .*/DEBUG = 0/' ./config.mk && cat config.mk | grep DEBUG
+        sed -i 's/.*DEBUG = .*/DEBUG = 0/' ./Makefile.conf && cat Makefile.conf | grep DEBUG
         make build
         mv Fennix.iso Fennix-release.iso
 
@@ -169,9 +281,10 @@ jobs:
         path: Fennix-release.iso
 
   compilearm64:
+    if: ${{ false }} # Disabled until we can get it to work
     name: Build aarch64
     runs-on: ubuntu-latest
-    needs: [buildcompiler]
+    needs: [buildcompiler, compilegnuefi]
     steps:
     - uses: actions/checkout@v3
       with:
@@ -179,11 +292,12 @@ jobs:
 
     - name: Update & Install Required Packages
       run: |
-        sudo apt update
-        sudo apt install rustc xorriso mtools genisoimage ovmf nasm doxygen make meson gcc-10 g++-10 gcc-mingw-w64-x86-64 gcc-mingw-w64-i686 mingw-w64 -y
+        sudo apt-get update
+        sudo apt-get install rustc xorriso mtools genisoimage ovmf nasm doxygen make meson gcc-10 g++-10 gcc-mingw-w64-x86-64 gcc-mingw-w64-i686 mingw-w64 -y
         make --quiet -C tools do_limine
         make --quiet -C Drivers prepare
         make --quiet -C Userspace prepare
+        make --quiet -C Lynx prepare
         make --quiet -C Kernel prepare
 
     - name: Cache cross Folder
@@ -193,15 +307,22 @@ jobs:
         path: tools/cross
         key: ${{ runner.os }}-cross-${{ hashFiles('tools/Makefile') }}
 
-    - name: Configure config.mk
-      run: sed -i 's/.*OSARCH = .*/OSARCH = aarch64/' ./config.mk && cat config.mk | grep OSARCH
+    - name: Cache gnu-efi Folder
+      id: cache-gnuefi
+      uses: actions/cache@v3
+      with:
+        path: Lynx/gnu-efi
+        key: ${{ runner.os }}-gnuefi-${{ hashFiles('Lynx/Makefile') }}
+
+    - name: Configure Makefile.conf
+      run: sed -i 's/.*OSARCH = .*/OSARCH = aarch64/' ./Makefile.conf && cat Makefile.conf | grep OSARCH
 
     - name: Compile Debug and Release ISO
       run: |
         make build
         mv Fennix.iso Fennix-debug.iso
         make clean
-        sed -i 's/.*DEBUG = .*/DEBUG = 0/' ./config.mk && cat config.mk | grep DEBUG
+        sed -i 's/.*DEBUG = .*/DEBUG = 0/' ./Makefile.conf && cat Makefile.conf | grep DEBUG
         make build
         mv Fennix.iso Fennix-release.iso
 

.gitignore

@@ -6,16 +6,14 @@ tools/*
 !tools/ExtMemDbg
 !tools/stage2_eltorito
 !tools/*.md
+!tools/*.css
 !tools/README.md
 !tools/website
 !tools/Makefile
 !tools/*.c
-!tools/*.patch
 !tools/*.cpp
 !tools/*.cfg
-!tools/acpi
-!tools/doxygen
-!tools/.gdbinit
+!tools/SSDT1.dat
 doxygen-doc
 initrd.tar
 .dccache
@@ -30,4 +28,3 @@ initrd.tar
 *.so
 *.o
 *.dmp
-*.pcap

.gitlab-ci.yml

@@ -87,11 +87,11 @@ build64:
     - make --quiet -C Userspace prepare
     - make --quiet -C Lynx prepare
     - make --quiet -C Kernel prepare
-    - sed -i 's/.*OSARCH = .*/OSARCH = amd64/' ./config.mk && cat config.mk | grep OSARCH
+    - sed -i 's/.*OSARCH = .*/OSARCH = amd64/' ./Makefile.conf && cat Makefile.conf | grep OSARCH
     - make build
     - mv Fennix.iso Fennix-debug.iso
     - make clean
-    - sed -i 's/.*DEBUG = .*/DEBUG = 0/' ./config.mk && cat config.mk | grep DEBUG
+    - sed -i 's/.*DEBUG = .*/DEBUG = 0/' ./Makefile.conf && cat Makefile.conf | grep DEBUG
     - make build
     - mv Fennix.iso Fennix-release.iso
   artifacts:
@@ -111,11 +111,11 @@ build32:
     - make --quiet -C Userspace prepare
     - make --quiet -C Lynx prepare
     - make --quiet -C Kernel prepare
-    - sed -i 's/.*OSARCH = .*/OSARCH = i386/' ./config.mk && cat config.mk | grep OSARCH
+    - sed -i 's/.*OSARCH = .*/OSARCH = i386/' ./Makefile.conf && cat Makefile.conf | grep OSARCH
     - make build
     - mv Fennix.iso Fennix-debug.iso
     - make clean
-    - sed -i 's/.*DEBUG = .*/DEBUG = 0/' ./config.mk && cat config.mk | grep DEBUG
+    - sed -i 's/.*DEBUG = .*/DEBUG = 0/' ./Makefile.conf && cat Makefile.conf | grep DEBUG
     - make build
     - mv Fennix.iso Fennix-release.iso
   artifacts:
@@ -134,11 +134,11 @@ buildarm64:
     - make --quiet -C Userspace prepare
     - make --quiet -C Lynx prepare
     - make --quiet -C Kernel prepare
-    - sed -i 's/.*OSARCH = .*/OSARCH = arm64/' ./config.mk && cat config.mk | grep OSARCH
+    - sed -i 's/.*OSARCH = .*/OSARCH = arm64/' ./Makefile.conf && cat Makefile.conf | grep OSARCH
     - make build
     - mv Fennix.iso Fennix-debug.iso
     - make clean
-    - sed -i 's/.*DEBUG = .*/DEBUG = 0/' ./config.mk && cat config.mk | grep DEBUG
+    - sed -i 's/.*DEBUG = .*/DEBUG = 0/' ./Makefile.conf && cat Makefile.conf | grep DEBUG
     - make build
     - mv Fennix.iso Fennix-release.iso
   artifacts:

.vscode/c_boilerplates.code-snippets

@@ -0,0 +1,20 @@
+{
+	"Fennix Kernel Header": {
+		"scope": "c",
+		"prefix": [
+			"head",
+		],
+		"body": [
+			"#ifndef __FENNIX_KERNEL_${2:header}_H__",
+			"#define __FENNIX_KERNEL_${2:header}_H__",
+			"",
+			"#include <types.h>",
+			"",
+			"$0",
+			"",
+			"#endif // !__FENNIX_KERNEL_${2:header}_H__",
+			""
+		],
+		"description": "Create kernel header."
+	}
+}

.vscode/launch.json

@@ -1,69 +0,0 @@
-{
-	"version": "0.2.0",
-	"configurations": [
-		{
-			"name": "Launch QEMU & debug the kernel",
-			"type": "cppdbg",
-			"request": "launch",
-			"program": "${workspaceFolder}/../Kernel/fennix.elf",
-			"cwd": "${workspaceFolder}",
-			"args": [],
-			"targetArchitecture": "x64",
-			"MIMode": "gdb",
-			"miDebuggerServerAddress": "/tmp/gdb-fennix",
-			"miDebuggerPath": "${workspaceFolder}/../tools/cross/bin/x86_64-fennix-gdb",
-			"miDebuggerArgs": "",
-			"externalConsole": false,
-			"additionalSOLibSearchPath": "${workspaceFolder}",
-			"internalConsoleOptions": "neverOpen",
-			"customLaunchSetupCommands": [
-				// {
-				// 	"text": "target remote localhost:1234",
-				// 	"description": "Connect to QEMU remote debugger"
-				// }
-			],
-			"setupCommands": [
-				{
-					"description": "Enable pretty-printing for gdb",
-					"text": "-enable-pretty-printing",
-					"ignoreFailures": true
-				},
-				{
-					"text": "set breakpoint pending on",
-					"description": "Make breakpoint pending on future shared library load."
-				},
-				{
-					"text": "file ${workspaceFolder}/../Kernel/fennix.elf",
-					"description": "Load binary"
-				},
-				{
-					"text": "add-symbol-file ${workspaceFolder}/../initrd_tmp_data/bin/utest",
-					"description": "Load /bin/utest",
-					"ignoreFailures": true
-				},
-				{
-					"text": "source ${workspaceFolder}/../tools/.gdbinit"
-				}
-			],
-			"preLaunchTask": "launch-qemu"
-		},
-		{
-			"type": "gdb",
-			"request": "attach",
-			"name": "Launch QEMU & attach to gdbserver",
-			"executable": "${workspaceFolder}/../Kernel/fennix.elf",
-			"target": "/tmp/gdb-fennix",
-			"remote": true,
-			"cwd": "${workspaceRoot}",
-			"valuesFormatting": "parseText",
-			"gdbpath": "${workspaceFolder}/../tools/cross/bin/x86_64-fennix-gdb",
-			"autorun": [
-				"set auto-load safe-path ${workspaceFolder}",
-				"source ${workspaceFolder}/../tools/.gdbinit",
-			],
-			"internalConsoleOptions": "neverOpen",
-			"printCalls": false,
-			"preLaunchTask": "launch-qemu"
-		},
-	]
-}

.vscode/settings.json

@@ -1,5 +1,5 @@
 {
-    "C_Cpp.errorSquiggles": "enabled",
+    "C_Cpp.errorSquiggles": "Enabled",
     "C_Cpp.autocompleteAddParentheses": true,
     "C_Cpp.codeAnalysis.clangTidy.enabled": true,
     "C_Cpp.clang_format_style": "Visual Studio",
@@ -11,10 +11,16 @@
     "editor.cursorSmoothCaretAnimation": "on",
     "files.watcherExclude": {
         "**/tools/binutils-gdb/**": true,
+        "**/tools/build-binutilsamd64/**": true,
+        "**/tools/build-binutilsarm64/**": true,
+        "**/tools/build-binutilsi386/**": true,
+        "**/tools/build-gccamd64/**": true,
+        "**/tools/build-gccarm64/**": true,
+        "**/tools/build-gcci386/**": true,
+        "**/tools/cross/**": true,
         "**/tools/gcc/**": true,
         "**/tools/limine/**": true,
         "**/tools/qemu/**": true,
-        "**/tools/cross/**": true,
         "**/doxygen-doc/**": true,
     }
 }

.vscode/tasks.json

@@ -1,28 +0,0 @@
-{
-	"version": "2.0.0",
-	"tasks": [
-		{
-			"label": "launch-qemu",
-			"type": "shell",
-			"command": "make -C ../ build && make -C ../ vscode_debug_only",
-			"isBackground": true,
-			"problemMatcher": [],
-			"group": {
-				"kind": "build",
-				"isDefault": true
-			},
-			"presentation": {
-				"reveal": "always",
-				"panel": "shared"
-			},
-			"options": {
-				"shell": {
-					"executable": "bash",
-					"args": [
-						"-c"
-					]
-				}
-			}
-		}
-	]
-}

CODE_OF_CONDUCT.md

@@ -1,128 +0,0 @@
-# Contributor Covenant Code of Conduct
-
-## Our Pledge
-
-We as members, contributors, and leaders pledge to make participation in our
-community a harassment-free experience for everyone, regardless of age, body
-size, visible or invisible disability, ethnicity, sex characteristics, gender
-identity and expression, level of experience, education, socio-economic status,
-nationality, personal appearance, race, religion, or sexual identity
-and orientation.
-
-We pledge to act and interact in ways that contribute to an open, welcoming,
-diverse, inclusive, and healthy community.
-
-## Our Standards
-
-Examples of behavior that contributes to a positive environment for our
-community include:
-
-* Demonstrating empathy and kindness toward other people
-* Being respectful of differing opinions, viewpoints, and experiences
-* Giving and gracefully accepting constructive feedback
-* Accepting responsibility and apologizing to those affected by our mistakes,
-  and learning from the experience
-* Focusing on what is best not just for us as individuals, but for the
-  overall community
-
-Examples of unacceptable behavior include:
-
-* The use of sexualized language or imagery, and sexual attention or
-  advances of any kind
-* Trolling, insulting or derogatory comments, and personal or political attacks
-* Public or private harassment
-* Publishing others' private information, such as a physical or email
-  address, without their explicit permission
-* Other conduct which could reasonably be considered inappropriate in a
-  professional setting
-
-## Enforcement Responsibilities
-
-Community leaders are responsible for clarifying and enforcing our standards of
-acceptable behavior and will take appropriate and fair corrective action in
-response to any behavior that they deem inappropriate, threatening, offensive,
-or harmful.
-
-Community leaders have the right and responsibility to remove, edit, or reject
-comments, commits, code, wiki edits, issues, and other contributions that are
-not aligned to this Code of Conduct, and will communicate reasons for moderation
-decisions when appropriate.
-
-## Scope
-
-This Code of Conduct applies within all community spaces, and also applies when
-an individual is officially representing the community in public spaces.
-Examples of representing our community include using an official e-mail address,
-posting via an official social media account, or acting as an appointed
-representative at an online or offline event.
-
-## Enforcement
-
-Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported to the community leaders responsible for enforcement at
-enderice2@protonmail.com.
-All complaints will be reviewed and investigated promptly and fairly.
-
-All community leaders are obligated to respect the privacy and security of the
-reporter of any incident.
-
-## Enforcement Guidelines
-
-Community leaders will follow these Community Impact Guidelines in determining
-the consequences for any action they deem in violation of this Code of Conduct:
-
-### 1. Correction
-
-**Community Impact**: Use of inappropriate language or other behavior deemed
-unprofessional or unwelcome in the community.
-
-**Consequence**: A private, written warning from community leaders, providing
-clarity around the nature of the violation and an explanation of why the
-behavior was inappropriate. A public apology may be requested.
-
-### 2. Warning
-
-**Community Impact**: A violation through a single incident or series
-of actions.
-
-**Consequence**: A warning with consequences for continued behavior. No
-interaction with the people involved, including unsolicited interaction with
-those enforcing the Code of Conduct, for a specified period of time. This
-includes avoiding interactions in community spaces as well as external channels
-like social media. Violating these terms may lead to a temporary or
-permanent ban.
-
-### 3. Temporary Ban
-
-**Community Impact**: A serious violation of community standards, including
-sustained inappropriate behavior.
-
-**Consequence**: A temporary ban from any sort of interaction or public
-communication with the community for a specified period of time. No public or
-private interaction with the people involved, including unsolicited interaction
-with those enforcing the Code of Conduct, is allowed during this period.
-Violating these terms may lead to a permanent ban.
-
-### 4. Permanent Ban
-
-**Community Impact**: Demonstrating a pattern of violation of community
-standards, including sustained inappropriate behavior,  harassment of an
-individual, or aggression toward or disparagement of classes of individuals.
-
-**Consequence**: A permanent ban from any sort of public interaction within
-the community.
-
-## Attribution
-
-This Code of Conduct is adapted from the [Contributor Covenant][homepage],
-version 2.0, available at
-https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
-
-Community Impact Guidelines were inspired by [Mozilla's code of conduct
-enforcement ladder](https://github.com/mozilla/diversity).
-
-[homepage]: https://www.contributor-covenant.org
-
-For answers to common questions about this code of conduct, see the FAQ at
-https://www.contributor-covenant.org/faq. Translations are available at
-https://www.contributor-covenant.org/translations.

CONTRIBUTING.md

@@ -1,70 +0,0 @@
-# Contributing to Fennix
-
-We welcome contributions to Fennix! Whether you are reporting a bug, suggesting a feature, or submitting a pull request, we’re excited to collaborate with you.
-
-## Table of Contents
-- [How to Contribute](#how-to-contribute)
-- [Code of Conduct](#code-of-conduct)
-- [Getting Started](#getting-started)
-- [Pull Request Guidelines](#pull-request-guidelines)
-- [Reporting Issues](#reporting-issues)
-- [Style Guide](#style-guide)
-
----
-
-## How to Contribute
-
-1. **Check existing issues or discussions** to see if your idea has already been mentioned or if someone is already working on it.
-2. If you’re new to the project, consider contributing to [good first issues](https://github.com/EnderIce2/Fennix/issues?q=is%3Aissue+is%3Aopen+label%3A%22good+first+issue%22).
-3. Fork the repository and create a new branch for your changes.
-
----
-
-## Code of Conduct
-
-By participating in this project, you agree to abide by our [Code of Conduct](CODE_OF_CONDUCT.md). Be respectful and inclusive while interacting with the community.
-
----
-
-## Getting Started
-
-1. Fork this repository and clone your fork.
-2. Set up your development environment according to the [README.md](README.md) or any other setup guide provided.
-3. Ensure all tests pass before submitting changes. Add tests for new features where applicable.
-
----
-
-## Pull Request Guidelines
-
-1. Keep pull requests focused on a single issue or feature.
-2. Write clear, descriptive commit messages.
-3. Ensure all tests pass before submitting your PR.
-4. Include a detailed description of your changes and reference any relevant issue numbers.
-5. Be open to feedback and revise your pull request if requested.
-6. Mark your pull request as a draft if it’s still a work in progress.
-
----
-
-## Reporting Issues
-
-1. Check if the issue has already been reported.
-2. Include a clear and descriptive title.
-3. Provide detailed steps to reproduce the problem (if applicable).
-4. Mention your environment details (e.g., OS, version, etc.).
-5. Attach screenshots or logs if they help explain the issue.
-
----
-
-## Style Guide
-
-Follow the coding style used in the repository to ensure consistency. Adhere to:
-- Use CamelCase for all names.
-- Start function and global declaration names with an uppercase letter.
-- Start local variable names with a lowercase letter.
-- Maintain consistent formatting and commenting guidelines.
-
-Refer to the [style guide document](STYLE_GUIDE.md) if available.
-
----
-
-Thank you for contributing! Your effort makes Fennix better for everyone. If you have any questions, feel free to reach out by opening an issue or joining our discussions.

CREDITS.md

@@ -1,125 +0,0 @@
-# Credits and References
-
-This project has been influenced and inspired by other projects and resources.
-
-License information can be found in the [LICENSES.md](LICENSES.md) file.
-
-## General
-- [OSDev Wiki](https://wiki.osdev.org/Main_Page)
-- [GCC x86 Built-in Functions](https://gcc.gnu.org/onlinedocs/gcc/x86-Built-in-Functions.html#x86-Built-in-Functions)
-- [GCC Common Function Attributes](https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#Common-Function-Attributes)
-- [LemonOS Project](https://github.com/LemonOSProject/LemonOS)
-- [ToaruOS](https://github.com/klange/toaruos)
-- [Various SIMD functions](https://wiki.osdev.org/User:01000101/optlib/)
-
-## C++ STL
-- [cppreference.com](https://cppreference.com)
-
-## Virtual terminal
-- [vtconsole](https://github.com/sleepy-monax/vtconsole)
-
-## Font
-- [Tamsyn Font](http://www.fial.com/~scott/tamsyn-font/)
-
-## CPU XCR0 Structure
-- [CPU Registers x86 - XCR0](https://wiki.osdev.org/CPU_Registers_x86#XCR0)
-
-## CPUID 0x7
-- [CPUID](https://en.wikipedia.org/wiki/CPUID)
-
-## Network
-- [Beej's Guide to Network Programming](https://web.archive.org/web/20051210132103/http://users.pcnet.ro/dmoroian/beej/Beej.html)
-- [UDP Socket Programming](https://web.archive.org/web/20060229214053/http://www.cs.rutgers.edu/~pxk/417/notes/sockets/udp.html)
-- [EtherType](https://en.wikipedia.org/wiki/EtherType)
-- [Linux Network Packet Reception](https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/performance_tuning_guide/s-network-packet-reception)
-- [Linux Kernel Networking Labs](https://linux-kernel-labs.github.io/refs/heads/master/labs/networking.html)
-- [smoltcp](https://github.com/smoltcp-rs/smoltcp)
-- [Understanding Linux Network Internals](https://www.cs.unh.edu/~cruse/cs326f04/RTL8139D_DataSheet.pdf)
-- [Address Resolution Protocol (ARP)](https://en.wikipedia.org/wiki/Address_Resolution_Protocol)
-- [C++ Operators](https://en.cppreference.com/w/cpp/language/operators)
-- [Dynamic Host Configuration Protocol (DHCP)](https://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol)
-- [RTL8139 Programmer's Guide](https://www.cs.usfca.edu/~cruse/cs326f04/RTL8139_ProgrammersGuide.pdf)
-- [RTL8139CP Datasheet](http://realtek.info/pdf/rtl8139cp.pdf)
-- [IPv4](https://en.wikipedia.org/wiki/IPv4)
-- [ICMP Parameters](https://www.iana.org/assignments/icmp-parameters/icmp-parameters.xhtml)
-
-## Loading ELF Shared Libraries and Dynamic Linking
-- [How To Write Shared Libraries](https://www.akkadia.org/drepper/dsohowto.pdf)
-- [Dynamic Linker](https://wiki.osdev.org/Dynamic_Linker)
-- [Nightingale OS](https://github.com/tyler569/nightingale)
-- [PLT and GOT: The Key to Code Sharing and Dynamic Libraries](https://www.technovelty.org/linux/plt-and-got-the-key-to-code-sharing-and-dynamic-libraries.html)
-- [YouTube Video on Dynamic Linking](https://www.youtube.com/watch?v=kUk5pw4w0h4)
-- [Oracle: Position Independent Code](https://docs.oracle.com/cd/E19683-01/817-3677/chapter6-42444/index.html)
-- [PLT and GOT Explained](https://ir0nstone.gitbook.io/notes/types/stack/aslr/plt_and_got)
-
-## Inter-Process Communication (IPC)
-- [Oracle IPC](https://docs.oracle.com/cd/E19048-01/chorus5/806-6897/architecture-103/index.html)
-- [Inter-Process Communication in OS](https://www.scaler.com/topics/operating-system/inter-process-communication-in-os/)
-- [IPC on Wikipedia](https://en.wikipedia.org/wiki/Inter-process_communication)
-- [GeeksforGeeks IPC Guide](https://www.geeksforgeeks.org/inter-process-communication-ipc/)
-
-## PCI (Peripheral Component Interconnect)
-- [OSDev PCI](https://wiki.osdev.org/PCI)
-- [PCI Configuration Space](https://en.wikipedia.org/wiki/PCI_configuration_space)
-
-## Audio
-- [FFmpeg Audio Types](https://trac.ffmpeg.org/wiki/audio%20types)
-- [AC97 on OSDev](https://wiki.osdev.org/AC97)
-- [AC97 Revision 2.3 Specification](https://inst.eecs.berkeley.edu//~cs150/Documents/ac97_r23.pdf)
-
-## Intrinsics (x86)
-- [Microsoft x86 Intrinsics](https://learn.microsoft.com/en-us/cpp/intrinsics/x86-intrinsics-list)
-- [Intel Intrinsics Guide](https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html)
-
-## CPUID Information
-- [AMD CPUID Instruction](https://www.amd.com/system/files/TechDocs/40332.pdf)
-- [CPUID Instruction Note](https://www.scss.tcd.ie/~jones/CS4021/processor-identification-cpuid-instruction-note.pdf)
-
-## SMBIOS (System Management BIOS)
-- [DMTF DSP0134](https://www.dmtf.org/dsp/DSP0134)
-- [DSP0134 Version 3.6.0](https://www.dmtf.org/sites/default/files/standards/documents/DSP0134_3.6.0.pdf)
-- [OSDev SMBIOS](https://wiki.osdev.org/System_Management_BIOS)
-
-## EDBA (Effective Direct Bus Access)
-- [Memory Map (x86)](https://wiki.osdev.org/Memory_Map_(x86))
-
-## UMIP, SMAP, and SMEP
-- [Control Register on Wikipedia](https://en.wikipedia.org/wiki/Control_register)
-- [Control Register and UMIP](https://web.archive.org/web/20160312223150/http://ncsi.com/nsatc11/presentations/wednesday/emerging_technologies/fischer.pdf)
-- [Supervisor Mode Access Prevention (SMEP)](https://en.wikipedia.org/wiki/Supervisor_Mode_Access_Prevention)
-
-## Atomic Operations
-- [C++ Atomic Operations](https://en.cppreference.com/w/cpp/atomic/atomic)
-
-## ELF (Executable and Linkable Format)
-- [ELF Header Format](https://www.sco.com/developers/gabi/latest/ch4.eheader.html)
-- [ELF File Format Specification](https://refspecs.linuxfoundation.org/elf/elf.pdf)
-- [Oracle: Executable and Linkable Format](https://docs.oracle.com/cd/E19683-01/817-3677/chapter6-42444/index.html)
-- [Oracle: ELF Program Headers](https://docs.oracle.com/cd/E19683-01/816-1386/chapter6-83432/index.html)
-- [YouTube Video on ELF](https://www.youtube.com/watch?v=nC1U1LJQL8o)
-- [Stevens' UNIX Network Programming](https://stevens.netmeister.org/631/elf.html)
-- [Linux Kernel ELF Header](https://github.com/torvalds/linux/blob/master/include/uapi/linux/elf.h)
-
-## C++ ABI (Application Binary Interface)
-- [GCC libstdc++ Source](https://github.com/gcc-mirror/gcc/tree/master/libstdc%2B%2B-v3)
-- [Itanium C++ ABI](https://itanium-cxx-abi.github.io/cxx-abi/abi.html)
-
-## signal.h
-- [POSIX signal.h](https://pubs.opengroup.org/onlinepubs/009695399/basedefs/signal.h.html)
-- [Linux signal(7) Manual](https://man7.org/linux/man-pages/man7/signal.7.html)
-
-## PS/2
-- [Scan Codes](https://www.win.tue.nl/~aeb/linux/kbd/scancodes-11.html)
-- [PS/2 Keyboard on OSDev](https://wiki.osdev.org/PS2_Keyboard)
-- [PS/2 Mouse on OSDev](https://wiki.osdev.org/PS2_Mouse)
-- [Mouse Input on OSDev](https://wiki.osdev.org/Mouse_Input)
-- [I/O Ports on OSDev](https://wiki.osdev.org/I/O_ports)
-- [PS/2 Controller on OSDev](https://wiki.osdev.org/%228042%22_PS/2_Controller)
-- [AIP on OSDev](https://wiki.osdev.org/Advanced_Integrated_Peripheral)
-
-## UART
-- [Interfacing the Serial / RS232 Port V5.0](http://www.senet.com.au/~cpeacock)
-
----
-
-Special thanks to all contributors and the creators of the referenced projects and resources!

Doxyfile

@@ -44,14 +44,14 @@ PROJECT_NUMBER         = 1.0.0
 # for a project that appears at the top of each page and should give viewer a
 # quick idea about the purpose of the project. Keep the description short.
 
-PROJECT_BRIEF          = "Full Documentation"
+PROJECT_BRIEF          = "Opeating System from scratch made in C and C++"
 
 # With the PROJECT_LOGO tag one can specify a logo or an icon that is included
 # in the documentation. The maximum height of the logo should not exceed 55
 # pixels and the maximum width should not exceed 200 pixels. Doxygen will copy
 # the logo to the output directory.
 
-PROJECT_LOGO           = tools/doxygen/favicon.ico
+PROJECT_LOGO           =
 
 # The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) path
 # into which the generated documentation will be written. If a relative path is
@@ -246,7 +246,7 @@ INHERIT_DOCS           = YES
 # of the file/class/namespace that contains it.
 # The default value is: NO.
 
-SEPARATE_MEMBER_PAGES  = NO
+SEPARATE_MEMBER_PAGES  = YES
 
 # The TAB_SIZE tag can be used to set the number of spaces in a tab. Doxygen
 # uses this value to replace tabs by spaces in code fragments.
@@ -424,7 +424,7 @@ SUBGROUPING            = YES
 # SEPARATE_MEMBER_PAGES.
 # The default value is: NO.
 
-INLINE_GROUPED_CLASSES = NO
+INLINE_GROUPED_CLASSES = YES
 
 # When the INLINE_SIMPLE_STRUCTS tag is set to YES, structs, classes, and unions
 # with only public data fields or simple typedef fields will be shown inline in
@@ -614,7 +614,7 @@ HIDE_COMPOUND_REFERENCE= NO
 # the files that are included by a file in the documentation of that file.
 # The default value is: YES.
 
-SHOW_INCLUDE_FILES     = NO
+SHOW_INCLUDE_FILES     = YES
 
 # If the SHOW_GROUPED_MEMB_INC tag is set to YES then Doxygen will add for each
 # grouped member an include statement to the documentation, telling the reader
@@ -794,7 +794,7 @@ CITE_BIB_FILES         =
 # messages are off.
 # The default value is: NO.
 
-QUIET                  = YES
+QUIET                  = NO
 
 # The WARNINGS tag can be used to turn on/off the warning messages that are
 # generated to standard error (stderr) by doxygen. If WARNINGS is set to YES
@@ -864,14 +864,7 @@ WARN_LOGFILE           =
 # spaces. See also FILE_PATTERNS and EXTENSION_MAPPING
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  = tools/doxygen/index.md \
-                         tools/doxygen/api.md \
-                         tools/doxygen/develop.md \
-                         README \
-                         Userspace/README.md \
-                         Drivers/README.md \
-                         Kernel/README.md \
-                         Kernel/include/interface
+INPUT                  = Kernel Lynx Userspace Drivers tools/doxymds/main.md
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses
@@ -962,7 +955,7 @@ RECURSIVE              = YES
 # Note that relative paths are relative to the directory from which doxygen is
 # run.
 
-EXCLUDE                = .vscode .github
+EXCLUDE                = .vscode tools
 
 # The EXCLUDE_SYMLINKS tag can be used to select whether or not files or
 # directories that are symbolic links (a Unix file system feature) are excluded
@@ -1071,7 +1064,7 @@ FILTER_SOURCE_PATTERNS =
 # (index.html). This can be useful if you have a project on for instance GitHub
 # and want to reuse the introduction page also for the doxygen output.
 
-USE_MDFILE_AS_MAINPAGE = tools/doxygen/index.md
+USE_MDFILE_AS_MAINPAGE = tools/doxymds/main.md
 
 #---------------------------------------------------------------------------
 # Configuration options related to source browsing
@@ -1231,7 +1224,7 @@ GENERATE_HTML          = YES
 # The default directory is: html.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-HTML_OUTPUT            = doxygen-doc/docs
+HTML_OUTPUT            = doxygen-doc/fulldoc
 
 # The HTML_FILE_EXTENSION tag can be used to specify the file extension for each
 # generated HTML page (for example: .htm, .php, .asp).
@@ -1258,7 +1251,7 @@ HTML_FILE_EXTENSION    = .html
 # of the possible markers and block names see the documentation.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-HTML_HEADER            = tools/doxygen/header.html
+HTML_HEADER            =
 
 # The HTML_FOOTER tag can be used to specify a user-defined HTML footer for each
 # generated HTML page. If the tag is left blank doxygen will generate a standard
@@ -1293,8 +1286,7 @@ HTML_STYLESHEET        =
 # list). For an example see the documentation.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-HTML_EXTRA_STYLESHEET  = tools/doxygen/theme/doxygen-awesome.css \
-                         tools/doxygen/custom.css
+HTML_EXTRA_STYLESHEET  = tools/doxygen-awesome.css tools/custom.css
 
 # The HTML_EXTRA_FILES tag can be used to specify one or more extra images or
 # other source files which should be copied to the HTML output directory. Note
@@ -1304,11 +1296,7 @@ HTML_EXTRA_STYLESHEET  = tools/doxygen/theme/doxygen-awesome.css \
 # files will be copied as-is; there are no commands or markers available.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-HTML_EXTRA_FILES       = tools/doxygen/theme/doxygen-awesome-darkmode-toggle.js \
-                         tools/doxygen/theme/doxygen-awesome-fragment-copy-button.js \
-                         tools/doxygen/theme/doxygen-awesome-paragraph-link.js \
-                         tools/doxygen/theme/doxygen-awesome-interactive-toc.js \
-                         tools/doxygen/theme/doxygen-awesome-tabs.js
+HTML_EXTRA_FILES       =
 
 # The HTML_COLORSTYLE_HUE tag controls the color of the HTML output. Doxygen
 # will adjust the colors in the style sheet and background images according to
@@ -1347,7 +1335,7 @@ HTML_COLORSTYLE_GAMMA  = 80
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-HTML_TIMESTAMP         = YES
+HTML_TIMESTAMP         = NO
 
 # If the HTML_DYNAMIC_MENUS tag is set to YES then the generated HTML
 # documentation will contain a main index with vertical navigation menus that
@@ -2083,7 +2071,7 @@ MAN_OUTPUT             = man
 # The default value is: .3.
 # This tag requires that the tag GENERATE_MAN is set to YES.
 
-MAN_EXTENSION          = .2
+MAN_EXTENSION          = .3
 
 # The MAN_SUBDIR tag determines the name of the directory created within
 # MAN_OUTPUT in which the man pages are placed. If defaults to man followed by

Drivers/.vscode/c_cpp_properties.json

@@ -12,6 +12,7 @@
                 "KERNEL_VERSION=\"1.0\"",
                 "GIT_COMMIT=\"0000000000000000000000000000000000000000\"",
                 "GIT_COMMIT_SHORT=\"0000000\"",
+                "a64",
                 "DEBUG=\"1\""
             ],
             "compilerPath": "${workspaceFolder}/../tools/cross/bin/x86_64-fennix-gcc",
@@ -68,6 +69,7 @@
                 "KERNEL_VERSION=\"1.0\"",
                 "GIT_COMMIT=\"0000000000000000000000000000000000000000\"",
                 "GIT_COMMIT_SHORT=\"0000000\"",
+                "a32",
                 "DEBUG=\"1\""
             ],
             "compilerPath": "${workspaceFolder}/../tools/cross/bin/i386-elf-gcc",

Drivers/.vscode/launch.json

@@ -1 +0,0 @@
-../../.vscode/launch.json

Drivers/.vscode/tasks.json

@@ -1 +0,0 @@
-../../.vscode/tasks.json

Drivers/LICENSE

@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2022, EnderIce2
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Drivers/Makefile

@@ -1,48 +1,3 @@
-default:
-	$(error Do not run this Makefile directly!)
-
-export CC := $(__CONF_CC)
-export CXX := $(__CONF_CXX)
-export LD := $(__CONF_LD)
-export AS := $(__CONF_AS)
-export OBJDUMP := $(__CONF_OBJDUMP)
-
-export OUTPUT_DIR := $(CURDIR)/out/
-export INCLUDE_DIR := $(CURDIR)/include
-
-DRIVER_LDFLAGS = -nostdlib -nodefaultlibs -nolibc -zmax-page-size=0x1000	\
-			-Wl,-Map file.map -fvisibility=hidden -Wl,--dynamic-linker=/boot/fennix.elf
-
-ifeq ($(OSARCH), amd64)
-DRIVER_CFLAGS = -fPIC -fPIE -pie -mno-80387 -mno-mmx -mno-3dnow	\
-		  -mno-red-zone -mno-sse -mno-sse2							\
-		  -march=x86-64 -pipe -ffunction-sections					\
-		  -msoft-float -fno-builtin
-
-else ifeq ($(OSARCH), i386)
-DRIVER_CFLAGS = -fPIC -fPIE -pie -mno-80387 -mno-mmx -mno-3dnow	\
-		  -mno-red-zone -mno-sse -mno-sse2 -ffunction-sections		\
-		  -march=i386 -pipe -msoft-float -fno-builtin
-else ifeq ($(OSARCH), aarch64)
-DRIVER_CFLAGS = -pipe -fno-builtin -fPIC
-endif
-
-DRIVER_CFLAGS += -I$(CURDIR)/include
-
-ifeq ($(DEBUG), 1)
-	DRIVER_CFLAGS += -DDEBUG -ggdb3 -O0 -fdiagnostics-color=always -fstack-usage
-ifeq ($(OSARCH), amd64)
-	DRIVER_CFLAGS += -fverbose-asm
-endif
-ifneq ($(OSARCH), aarch64)
-	DRIVER_CFLAGS += -fstack-check
-endif
-	DRIVER_LDFLAGS += -ggdb3 -O0
-endif
-
-export DRIVER_LDFLAGS
-export DRIVER_CFLAGS
-
 build:
 	cp -rf ../Kernel/include/interface/* include/
 	mkdir -p out

Drivers/README.md

@@ -1 +1,11 @@
 # Drivers
+
+Drivers for [Fennix](https://github.com/Fennix-Project/Fennix).
+
+---
+
+Use `Fennix` repo to build the operating system.
+
+```bash
+git clone --recurse-submodules https://github.com/Fennix-Project/Fennix.git
+```

Drivers/audio/Makefile

@@ -1,9 +1,7 @@
-MAKE_TARGETS := build clean
-DIRECTORIES := $(sort $(dir $(wildcard ./*/)))
+build:
+	make -C ac97 build
+	make -C hda build
 
-.PHONY: $(MAKE_TARGETS) $(DIRECTORIES)
-
-$(MAKE_TARGETS): $(DIRECTORIES)
-
-$(DIRECTORIES):
-	$(MAKE) -C $@ $(MAKECMDGOALS)
+clean:
+	make -C ac97 clean
+	make -C hda clean

Drivers/audio/ac97/Makefile

@@ -1,35 +1,22 @@
-default:
-	$(error Do not run this Makefile directly!)
+# Config files
+include ../../../Makefile.conf
+include ../../config.mk
 
 S_SOURCES = $(shell find ./ -type f -name '*.S')
 C_SOURCES = $(shell find ./ -type f -name '*.c')
-CXX_SOURCES = $(shell find ./ -type f -name '*.cpp')
+CPP_SOURCES = $(shell find ./ -type f -name '*.cpp')
 HEADERS = $(sort $(dir $(wildcard ../../include/*)))
-OBJ = $(C_SOURCES:.c=.o) $(CXX_SOURCES:.cpp=.o) $(S_SOURCES:.S=.o)
-STACK_USAGE_OBJ = $(C_SOURCES:.c=.su) $(CXX_SOURCES:.cpp=.su)
+OBJ = $(C_SOURCES:.c=.o) $(CPP_SOURCES:.cpp=.o) $(S_SOURCES:.S=.o)
+STACK_USAGE_OBJ = $(C_SOURCES:.c=.su) $(CPP_SOURCES:.cpp=.su)
 
-FILENAME = $(notdir $(shell pwd)).drv
+FILENAME = ac97.drv
 
 build: $(FILENAME)
-	mv $(FILENAME) $(OUTPUT_DIR)$(FILENAME)
+	mv $(FILENAME) ../../out/$(FILENAME)
 
 $(FILENAME): $(OBJ)
 	$(info Linking $@)
-	$(CC) $(DRIVER_LDFLAGS) $(OBJ) $(OUTPUT_DIR)dcrt0.o -L$(OUTPUT_DIR) -lkernel -o $@
-
-WARNCFLAG = -Wall -Wextra
-
-%.o: %.c $(HEADERS)
-	$(info Compiling $<)
-	$(CC) $(DRIVER_CFLAGS) $(WARNCFLAG) -std=c17 -c $< -o $@
-
-%.o: %.cpp $(HEADERS)
-	$(info Compiling $<)
-	$(CXX) $(DRIVER_CFLAGS) $(WARNCFLAG) -std=c++20 -fno-exceptions -fno-rtti -c $< -o $@
-
-%.o: %.S
-	$(info Compiling $<)
-	$(AS) -o $@ $<
+	$(CC) $(DRIVER_LDFLAGS) $(OBJ) ../../out/dcrt0.o -L../../out -lkernel -o $@
 
 clean:
 	rm -f file.map $(OBJ) $(STACK_USAGE_OBJ)

Drivers/audio/hda/Makefile

@@ -1,35 +1,22 @@
-default:
-	$(error Do not run this Makefile directly!)
+# Config files
+include ../../../Makefile.conf
+include ../../config.mk
 
 S_SOURCES = $(shell find ./ -type f -name '*.S')
 C_SOURCES = $(shell find ./ -type f -name '*.c')
-CXX_SOURCES = $(shell find ./ -type f -name '*.cpp')
+CPP_SOURCES = $(shell find ./ -type f -name '*.cpp')
 HEADERS = $(sort $(dir $(wildcard ../../include/*)))
-OBJ = $(C_SOURCES:.c=.o) $(CXX_SOURCES:.cpp=.o) $(S_SOURCES:.S=.o)
-STACK_USAGE_OBJ = $(C_SOURCES:.c=.su) $(CXX_SOURCES:.cpp=.su)
+OBJ = $(C_SOURCES:.c=.o) $(CPP_SOURCES:.cpp=.o) $(S_SOURCES:.S=.o)
+STACK_USAGE_OBJ = $(C_SOURCES:.c=.su) $(CPP_SOURCES:.cpp=.su)
 
-FILENAME = $(notdir $(shell pwd)).drv
+FILENAME = hda.drv
 
 build: $(FILENAME)
-	mv $(FILENAME) $(OUTPUT_DIR)$(FILENAME)
+	mv $(FILENAME) ../../out/$(FILENAME)
 
 $(FILENAME): $(OBJ)
 	$(info Linking $@)
-	$(CC) $(DRIVER_LDFLAGS) $(OBJ) $(OUTPUT_DIR)dcrt0.o -L$(OUTPUT_DIR) -lkernel -o $@
-
-WARNCFLAG = -Wall -Wextra
-
-%.o: %.c $(HEADERS)
-	$(info Compiling $<)
-	$(CC) $(DRIVER_CFLAGS) $(WARNCFLAG) -std=c17 -c $< -o $@
-
-%.o: %.cpp $(HEADERS)
-	$(info Compiling $<)
-	$(CXX) $(DRIVER_CFLAGS) $(WARNCFLAG) -std=c++20 -fno-exceptions -fno-rtti -c $< -o $@
-
-%.o: %.S
-	$(info Compiling $<)
-	$(AS) -o $@ $<
+	$(CC) $(DRIVER_LDFLAGS) $(OBJ) ../../out/dcrt0.o -L../../out -lkernel -o $@
 
 clean:
 	rm -f file.map $(OBJ) $(STACK_USAGE_OBJ)

Drivers/config.mk

@@ -0,0 +1,54 @@
+CC = ../../../$(COMPILER_PATH)/$(COMPILER_ARCH)gcc
+CPP = ../../../$(COMPILER_PATH)/$(COMPILER_ARCH)g++
+LD = ../../../$(COMPILER_PATH)/$(COMPILER_ARCH)ld
+AS = ../../../$(COMPILER_PATH)/$(COMPILER_ARCH)as
+OBJDUMP = ../../../$(COMPILER_PATH)/$(COMPILER_ARCH)objdump
+
+DRIVER_LDFLAGS := -nostdlib -nodefaultlibs -nolibc -zmax-page-size=0x1000	\
+			-Wl,-Map file.map -fvisibility=hidden -Wl,--dynamic-linker=/boot/fennix.elf
+
+ifeq ($(OSARCH), amd64)
+
+DRIVER_CFLAGS := -fPIC -fPIE -pie -mno-80387 -mno-mmx -mno-3dnow	\
+		  -mno-red-zone -mno-sse -mno-sse2							\
+		  -march=x86-64 -pipe -ffunction-sections					\
+		  -msoft-float -fno-builtin
+
+else ifeq ($(OSARCH), i386)
+
+DRIVER_CFLAGS := -fPIC -fPIE -pie -mno-80387 -mno-mmx -mno-3dnow	\
+		  -mno-red-zone -mno-sse -mno-sse2 -ffunction-sections		\
+		  -march=i386 -pipe -msoft-float -fno-builtin
+
+else ifeq ($(OSARCH), aarch64)
+
+DRIVER_CFLAGS += -pipe -fno-builtin -fPIC
+
+endif
+
+DRIVER_CFLAGS += -I../../include
+
+ifeq ($(DEBUG), 1)
+	DRIVER_CFLAGS += -DDEBUG -ggdb3 -O0 -fdiagnostics-color=always -fstack-usage
+ifeq ($(OSARCH), amd64)
+	DRIVER_CFLAGS += -fverbose-asm
+endif
+ifneq ($(OSARCH), aarch64)
+	DRIVER_CFLAGS += -fstack-check
+endif
+	DRIVER_LDFLAGS += -ggdb3 -O0
+endif
+
+WARNCFLAG = -Wall -Wextra
+
+%.o: %.c $(HEADERS)
+	$(info Compiling $<)
+	$(CC) $(DRIVER_CFLAGS) $(WARNCFLAG) -std=c17 -c $< -o $@
+
+%.o: %.cpp $(HEADERS)
+	$(info Compiling $<)
+	$(CPP) $(DRIVER_CFLAGS) $(WARNCFLAG) -std=c++20 -fno-exceptions -fno-rtti -c $< -o $@
+
+%.o: %.S
+	$(info Compiling $<)
+	$(AS) -o $@ $<

Drivers/filesystem/Makefile

@@ -1,9 +1,5 @@
-MAKE_TARGETS := build clean
-DIRECTORIES := $(sort $(dir $(wildcard ./*/)))
+build:
+	make -C fat build
 
-.PHONY: $(MAKE_TARGETS) $(DIRECTORIES)
-
-$(MAKE_TARGETS): $(DIRECTORIES)
-
-$(DIRECTORIES):
-	$(MAKE) -C $@ $(MAKECMDGOALS)
+clean:
+	make -C fat clean

Drivers/filesystem/fat/Makefile

@@ -1,35 +1,22 @@
-default:
-	$(error Do not run this Makefile directly!)
+# Config files
+include ../../../Makefile.conf
+include ../../config.mk
 
 S_SOURCES = $(shell find ./ -type f -name '*.S')
 C_SOURCES = $(shell find ./ -type f -name '*.c')
-CXX_SOURCES = $(shell find ./ -type f -name '*.cpp')
+CPP_SOURCES = $(shell find ./ -type f -name '*.cpp')
 HEADERS = $(sort $(dir $(wildcard ../../include/*)))
-OBJ = $(C_SOURCES:.c=.o) $(CXX_SOURCES:.cpp=.o) $(S_SOURCES:.S=.o)
-STACK_USAGE_OBJ = $(C_SOURCES:.c=.su) $(CXX_SOURCES:.cpp=.su)
+OBJ = $(C_SOURCES:.c=.o) $(CPP_SOURCES:.cpp=.o) $(S_SOURCES:.S=.o)
+STACK_USAGE_OBJ = $(C_SOURCES:.c=.su) $(CPP_SOURCES:.cpp=.su)
 
-FILENAME = $(notdir $(shell pwd)).drv
+FILENAME = fat.drv
 
 build: $(FILENAME)
-	mv $(FILENAME) $(OUTPUT_DIR)$(FILENAME)
+	mv $(FILENAME) ../../out/$(FILENAME)
 
 $(FILENAME): $(OBJ)
 	$(info Linking $@)
-	$(CC) $(DRIVER_LDFLAGS) $(OBJ) $(OUTPUT_DIR)dcrt0.o -L$(OUTPUT_DIR) -lkernel -o $@
-
-WARNCFLAG = -Wall -Wextra
-
-%.o: %.c $(HEADERS)
-	$(info Compiling $<)
-	$(CC) $(DRIVER_CFLAGS) $(WARNCFLAG) -std=c17 -c $< -o $@
-
-%.o: %.cpp $(HEADERS)
-	$(info Compiling $<)
-	$(CXX) $(DRIVER_CFLAGS) $(WARNCFLAG) -std=c++20 -fno-exceptions -fno-rtti -c $< -o $@
-
-%.o: %.S
-	$(info Compiling $<)
-	$(AS) -o $@ $<
+	$(CC) $(DRIVER_LDFLAGS) $(OBJ) ../../out/dcrt0.o -L../../out -lkernel -o $@
 
 clean:
 	rm -f file.map $(OBJ) $(STACK_USAGE_OBJ)

Drivers/include/aip.h

@@ -1,18 +1,18 @@
 /*
-	This file is part of Fennix Kernel.
+	This file is part of Fennix Drivers.
 
-	Fennix Kernel is free software: you can redistribute it and/or
+	Fennix Drivers is free software: you can redistribute it and/or
 	modify it under the terms of the GNU General Public License as
 	published by the Free Software Foundation, either version 3 of
 	the License, or (at your option) any later version.
 
-	Fennix Kernel is distributed in the hope that it will be useful,
+	Fennix Drivers is distributed in the hope that it will be useful,
 	but WITHOUT ANY WARRANTY; without even the implied warranty of
 	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 	GNU General Public License for more details.
 
 	You should have received a copy of the GNU General Public License
-	along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+	along with Fennix Drivers. If not, see <https://www.gnu.org/licenses/>.
 */
 
 #ifndef __FENNIX_API_AIP_H__

Drivers/include/errno.h

@@ -15,8 +15,8 @@
 	along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
 */
 
-#ifndef __FENNIX_API_ERRNO_H__
-#define __FENNIX_API_ERRNO_H__
+#ifndef __FENNIX_KERNEL_ERRNO_H__
+#define __FENNIX_KERNEL_ERRNO_H__
 
 /**
  * The documentation for these error codes are from:
@@ -416,8 +416,8 @@ typedef enum
 	 * Not a directory. A component of the specified pathname exists, but
 	 *  it is not a directory, when a directory was expected; or an
 	 *  attempt was made to create a non-directory file, and the specified
-	 *  pathname contains at least one non- \<slash\> character and ends
-	 *  with one or more trailing \<slash\> characters.
+	 *  pathname contains at least one non- <slash> character and ends
+	 *  with one or more trailing <slash> characters.
 	 */
 	ENOTDIR = 57,
 
@@ -588,18 +588,17 @@ typedef enum
 	__ERRNO_MAX
 } KernelErrors;
 
+#include <types.h>
+EXTERNC int *__errno_location(void) __attribute__((const));
+#define errno (*__errno_location())
+
 #ifdef __cplusplus
 extern "C"
 {
 #endif
-
-	int *__errno_location(void) __attribute__((const));
 	char *strerror(int errnum);
-
 #ifdef __cplusplus
 }
 #endif
 
-#define errno (*__errno_location())
-
-#endif // !__FENNIX_API_ERRNO_H__
+#endif // !__FENNIX_KERNEL_ERRNO_H__

Drivers/include/fs.h

@@ -348,7 +348,6 @@ struct SuperBlockOperations
 	 * Write all pending changes to the disk.
 	 *
 	 * @param Info Inode to synchronize. If NULL, synchronize all inodes.
-	 * @param Node Inode to synchronize.
 	 *
 	 * @return Zero on success, otherwise an error code.
 	 */

Drivers/include/pci.h

@@ -1,18 +1,18 @@
 /*
-	This file is part of Fennix Kernel.
+	This file is part of Fennix Drivers.
 
-	Fennix Kernel is free software: you can redistribute it and/or
+	Fennix Drivers is free software: you can redistribute it and/or
 	modify it under the terms of the GNU General Public License as
 	published by the Free Software Foundation, either version 3 of
 	the License, or (at your option) any later version.
 
-	Fennix Kernel is distributed in the hope that it will be useful,
+	Fennix Drivers is distributed in the hope that it will be useful,
 	but WITHOUT ANY WARRANTY; without even the implied warranty of
 	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 	GNU General Public License for more details.
 
 	You should have received a copy of the GNU General Public License
-	along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+	along with Fennix Drivers. If not, see <https://www.gnu.org/licenses/>.
 */
 
 #ifndef __FENNIX_API_PCI_H__

Drivers/input/Makefile

@@ -1,9 +1,5 @@
-MAKE_TARGETS := build clean
-DIRECTORIES := $(sort $(dir $(wildcard ./*/)))
+build:
+	make -C aip build
 
-.PHONY: $(MAKE_TARGETS) $(DIRECTORIES)
-
-$(MAKE_TARGETS): $(DIRECTORIES)
-
-$(DIRECTORIES):
-	$(MAKE) -C $@ $(MAKECMDGOALS)
+clean:
+	make -C aip clean

Drivers/input/aip/Makefile

@@ -1,35 +1,22 @@
-default:
-	$(error Do not run this Makefile directly!)
+# Config files
+include ../../../Makefile.conf
+include ../../config.mk
 
 S_SOURCES = $(shell find ./ -type f -name '*.S')
 C_SOURCES = $(shell find ./ -type f -name '*.c')
-CXX_SOURCES = $(shell find ./ -type f -name '*.cpp')
+CPP_SOURCES = $(shell find ./ -type f -name '*.cpp')
 HEADERS = $(sort $(dir $(wildcard ../../include/*)))
-OBJ = $(C_SOURCES:.c=.o) $(CXX_SOURCES:.cpp=.o) $(S_SOURCES:.S=.o)
-STACK_USAGE_OBJ = $(C_SOURCES:.c=.su) $(CXX_SOURCES:.cpp=.su)
+OBJ = $(C_SOURCES:.c=.o) $(CPP_SOURCES:.cpp=.o) $(S_SOURCES:.S=.o)
+STACK_USAGE_OBJ = $(C_SOURCES:.c=.su) $(CPP_SOURCES:.cpp=.su)
 
-FILENAME = $(notdir $(shell pwd)).drv
+FILENAME = aip.drv
 
 build: $(FILENAME)
-	mv $(FILENAME) $(OUTPUT_DIR)$(FILENAME)
+	mv $(FILENAME) ../../out/$(FILENAME)
 
 $(FILENAME): $(OBJ)
 	$(info Linking $@)
-	$(CC) $(DRIVER_LDFLAGS) $(OBJ) $(OUTPUT_DIR)dcrt0.o -L$(OUTPUT_DIR) -lkernel -o $@
-
-WARNCFLAG = -Wall -Wextra
-
-%.o: %.c $(HEADERS)
-	$(info Compiling $<)
-	$(CC) $(DRIVER_CFLAGS) $(WARNCFLAG) -std=c17 -c $< -o $@
-
-%.o: %.cpp $(HEADERS)
-	$(info Compiling $<)
-	$(CXX) $(DRIVER_CFLAGS) $(WARNCFLAG) -std=c++20 -fno-exceptions -fno-rtti -c $< -o $@
-
-%.o: %.S
-	$(info Compiling $<)
-	$(AS) -o $@ $<
+	$(CC) $(DRIVER_LDFLAGS) $(OBJ) ../../out/dcrt0.o -L../../out -lkernel -o $@
 
 clean:
 	rm -f file.map $(OBJ) $(STACK_USAGE_OBJ)

Drivers/library/Makefile

@@ -1,14 +1,21 @@
+# Config file
+include ../../Makefile.conf
+
 FILENAME = libkernel.so
 
-default:
-	$(error Do not run this Makefile directly!)
+CC = ../../$(COMPILER_PATH)/$(COMPILER_ARCH)gcc
+CPP = ../../$(COMPILER_PATH)/$(COMPILER_ARCH)g++
+LD = ../../$(COMPILER_PATH)/$(COMPILER_ARCH)ld
+AS = ../../$(COMPILER_PATH)/$(COMPILER_ARCH)as
+AR = ../../$(COMPILER_PATH)/$(COMPILER_ARCH)ar
 
 S_SOURCES = $(shell find ./ -type f -name '*.S' -not -path "./crt/*")
 C_SOURCES = $(shell find ./ -type f -name '*.c' -not -path "./crt/*")
-CXX_SOURCES = $(shell find ./ -type f -name '*.cpp' -not -path "./crt/*")
-HEADERS = $(sort $(dir $(wildcard $(INCLUDE_DIR)/*)))
-OBJ = $(C_SOURCES:.c=.o) $(CXX_SOURCES:.cpp=.o) $(ASM_SOURCES:.asm=.o) $(S_SOURCES:.S=.o) $(PSF_SOURCES:.psf=.o) $(BMP_SOURCES:.bmp=.o)
-STACK_USAGE_OBJ = $(C_SOURCES:.c=.su) $(CXX_SOURCES:.cpp=.su)
+CPP_SOURCES = $(shell find ./ -type f -name '*.cpp' -not -path "./crt/*")
+HEADERS = $(sort $(dir $(wildcard ../include/*)))
+OBJ = $(C_SOURCES:.c=.o) $(CPP_SOURCES:.cpp=.o) $(ASM_SOURCES:.asm=.o) $(S_SOURCES:.S=.o) $(PSF_SOURCES:.psf=.o) $(BMP_SOURCES:.bmp=.o)
+STACK_USAGE_OBJ = $(C_SOURCES:.c=.su) $(CPP_SOURCES:.cpp=.su)
+INCLUDE_DIR = ../include
 
 LDFLAGS := -fPIC -fPIE -pie -nostdlib -nodefaultlibs -nolibc	\
 	-zmax-page-size=0x1000 -Wl,-Map libkernel.map -shared
@@ -36,7 +43,7 @@ CFLAGS += -pipe -fno-builtin -fPIC
 
 endif
 
-CRT_CFLAGS := -fPIC -fPIE -pie -mno-red-zone -std=c++20 -I$(INCLUDE_DIR)
+CRT_CFLAGS := -fPIC -fPIE -pie -mno-red-zone -std=c++20 -I../include
 
 ifeq ($(DEBUG), 1)
 	CFLAGS += -DDEBUG -ggdb3 -O0 -fdiagnostics-color=always -fstack-usage
@@ -53,12 +60,12 @@ endif
 endif
 
 build: $(FILENAME)
-	$(CXX) $(CRT_CFLAGS) -c crt/crt0.cpp -o dcrt0.o
-	mv dcrt0.o $(OUTPUT_DIR)dcrt0.o
+	$(CPP) $(CRT_CFLAGS) -c crt/crt0.cpp -o dcrt0.o
+	mv dcrt0.o ../out/dcrt0.o
 
 $(FILENAME): $(OBJ)
 	$(info Linking $@)
-	$(CC) $(LDFLAGS) $(OBJ) -o $(OUTPUT_DIR)$(FILENAME)
+	$(CC) $(LDFLAGS) $(OBJ) -o ../out/$(FILENAME)
 
 %.o: %.c $(HEADERS)
 	$(info Compiling $<)
@@ -66,7 +73,7 @@ $(FILENAME): $(OBJ)
 
 %.o: %.cpp $(HEADERS)
 	$(info Compiling $<)
-	$(CXX) $(CFLAGS) $(WARNCFLAG) -std=c++20 -fexceptions -c $< -o $@
+	$(CPP) $(CFLAGS) $(WARNCFLAG) -std=c++20 -fexceptions -c $< -o $@
 
 %.o: %.S
 	$(info Compiling $<)

Drivers/misc/Makefile

@@ -1,9 +1,7 @@
-MAKE_TARGETS := build clean
-DIRECTORIES := $(sort $(dir $(wildcard ./*/)))
+build:
+	make -C example build
+	make -C vmware build
 
-.PHONY: $(MAKE_TARGETS) $(DIRECTORIES)
-
-$(MAKE_TARGETS): $(DIRECTORIES)
-
-$(DIRECTORIES):
-	$(MAKE) -C $@ $(MAKECMDGOALS)
+clean:
+	make -C example clean
+	make -C vmware clean

Drivers/misc/example/Makefile

@@ -1,35 +1,22 @@
-default:
-	$(error Do not run this Makefile directly!)
+# Config files
+include ../../../Makefile.conf
+include ../../config.mk
 
 S_SOURCES = $(shell find ./ -type f -name '*.S')
 C_SOURCES = $(shell find ./ -type f -name '*.c')
-CXX_SOURCES = $(shell find ./ -type f -name '*.cpp')
+CPP_SOURCES = $(shell find ./ -type f -name '*.cpp')
 HEADERS = $(sort $(dir $(wildcard ../../include/*)))
-OBJ = $(C_SOURCES:.c=.o) $(CXX_SOURCES:.cpp=.o) $(S_SOURCES:.S=.o)
-STACK_USAGE_OBJ = $(C_SOURCES:.c=.su) $(CXX_SOURCES:.cpp=.su)
+OBJ = $(C_SOURCES:.c=.o) $(CPP_SOURCES:.cpp=.o) $(S_SOURCES:.S=.o)
+STACK_USAGE_OBJ = $(C_SOURCES:.c=.su) $(CPP_SOURCES:.cpp=.su)
 
-FILENAME = $(notdir $(shell pwd)).drv
+FILENAME = example.drv
 
 build: $(FILENAME)
-	mv $(FILENAME) $(OUTPUT_DIR)$(FILENAME)
+	mv $(FILENAME) ../../out/$(FILENAME)
 
 $(FILENAME): $(OBJ)
 	$(info Linking $@)
-	$(CC) $(DRIVER_LDFLAGS) $(OBJ) $(OUTPUT_DIR)dcrt0.o -L$(OUTPUT_DIR) -lkernel -o $@
-
-WARNCFLAG = -Wall -Wextra
-
-%.o: %.c $(HEADERS)
-	$(info Compiling $<)
-	$(CC) $(DRIVER_CFLAGS) $(WARNCFLAG) -std=c17 -c $< -o $@
-
-%.o: %.cpp $(HEADERS)
-	$(info Compiling $<)
-	$(CXX) $(DRIVER_CFLAGS) $(WARNCFLAG) -std=c++20 -fno-exceptions -fno-rtti -c $< -o $@
-
-%.o: %.S
-	$(info Compiling $<)
-	$(AS) -o $@ $<
+	$(CC) $(DRIVER_LDFLAGS) $(OBJ) ../../out/dcrt0.o -L../../out -lkernel -o $@
 
 clean:
 	rm -f file.map $(OBJ) $(STACK_USAGE_OBJ)

Drivers/misc/example/main.c

@@ -66,14 +66,15 @@ int DriverProbe()
 	 * This function is to test if the driver is compatible
 	 * with the hardware.
 	 * Example: Like if there is a PCI device that the driver
-	 * is for, or a CPU feature etc.
+	 * is for, or a CPU feature that etc.
 	 *
 	 * Return 0 if the driver is compatible with the hardware.
+	 * Otherwise, return a value that is not 0.
 	 *
 	 * Note: In this function you cannot use variables that
 	 * have constructors or destructors. Before DriverEntry,
 	 * the constructors are called and after DriverFinalize,
-	 * the destructors.
+	 * the destructors are called.
 	 */
 
 	return 0;

Drivers/misc/vmware/Makefile

@@ -1,35 +1,22 @@
-default:
-	$(error Do not run this Makefile directly!)
+# Config files
+include ../../../Makefile.conf
+include ../../config.mk
 
 S_SOURCES = $(shell find ./ -type f -name '*.S')
 C_SOURCES = $(shell find ./ -type f -name '*.c')
-CXX_SOURCES = $(shell find ./ -type f -name '*.cpp')
+CPP_SOURCES = $(shell find ./ -type f -name '*.cpp')
 HEADERS = $(sort $(dir $(wildcard ../../include/*)))
-OBJ = $(C_SOURCES:.c=.o) $(CXX_SOURCES:.cpp=.o) $(S_SOURCES:.S=.o)
-STACK_USAGE_OBJ = $(C_SOURCES:.c=.su) $(CXX_SOURCES:.cpp=.su)
+OBJ = $(C_SOURCES:.c=.o) $(CPP_SOURCES:.cpp=.o) $(S_SOURCES:.S=.o)
+STACK_USAGE_OBJ = $(C_SOURCES:.c=.su) $(CPP_SOURCES:.cpp=.su)
 
-FILENAME = $(notdir $(shell pwd)).drv
+FILENAME = vmware.drv
 
 build: $(FILENAME)
-	mv $(FILENAME) $(OUTPUT_DIR)$(FILENAME)
+	mv $(FILENAME) ../../out/$(FILENAME)
 
 $(FILENAME): $(OBJ)
 	$(info Linking $@)
-	$(CC) $(DRIVER_LDFLAGS) $(OBJ) $(OUTPUT_DIR)dcrt0.o -L$(OUTPUT_DIR) -lkernel -o $@
-
-WARNCFLAG = -Wall -Wextra
-
-%.o: %.c $(HEADERS)
-	$(info Compiling $<)
-	$(CC) $(DRIVER_CFLAGS) $(WARNCFLAG) -std=c17 -c $< -o $@
-
-%.o: %.cpp $(HEADERS)
-	$(info Compiling $<)
-	$(CXX) $(DRIVER_CFLAGS) $(WARNCFLAG) -std=c++20 -fno-exceptions -fno-rtti -c $< -o $@
-
-%.o: %.S
-	$(info Compiling $<)
-	$(AS) -o $@ $<
+	$(CC) $(DRIVER_LDFLAGS) $(OBJ) ../../out/dcrt0.o -L../../out -lkernel -o $@
 
 clean:
 	rm -f file.map $(OBJ) $(STACK_USAGE_OBJ)

Drivers/network/Makefile

@@ -1,9 +1,7 @@
-MAKE_TARGETS := build clean
-DIRECTORIES := $(sort $(dir $(wildcard ./*/)))
+build:
+	make -C e1000 build
+	make -C rtl8139 build
 
-.PHONY: $(MAKE_TARGETS) $(DIRECTORIES)
-
-$(MAKE_TARGETS): $(DIRECTORIES)
-
-$(DIRECTORIES):
-	$(MAKE) -C $@ $(MAKECMDGOALS)
+clean:
+	make -C e1000 clean
+	make -C rtl8139 clean

Drivers/network/e1000/Makefile

@@ -1,35 +1,22 @@
-default:
-	$(error Do not run this Makefile directly!)
+# Config files
+include ../../../Makefile.conf
+include ../../config.mk
 
 S_SOURCES = $(shell find ./ -type f -name '*.S')
 C_SOURCES = $(shell find ./ -type f -name '*.c')
-CXX_SOURCES = $(shell find ./ -type f -name '*.cpp')
+CPP_SOURCES = $(shell find ./ -type f -name '*.cpp')
 HEADERS = $(sort $(dir $(wildcard ../../include/*)))
-OBJ = $(C_SOURCES:.c=.o) $(CXX_SOURCES:.cpp=.o) $(S_SOURCES:.S=.o)
-STACK_USAGE_OBJ = $(C_SOURCES:.c=.su) $(CXX_SOURCES:.cpp=.su)
+OBJ = $(C_SOURCES:.c=.o) $(CPP_SOURCES:.cpp=.o) $(S_SOURCES:.S=.o)
+STACK_USAGE_OBJ = $(C_SOURCES:.c=.su) $(CPP_SOURCES:.cpp=.su)
 
-FILENAME = $(notdir $(shell pwd)).drv
+FILENAME = e1000.drv
 
 build: $(FILENAME)
-	mv $(FILENAME) $(OUTPUT_DIR)$(FILENAME)
+	mv $(FILENAME) ../../out/$(FILENAME)
 
 $(FILENAME): $(OBJ)
 	$(info Linking $@)
-	$(CC) $(DRIVER_LDFLAGS) $(OBJ) $(OUTPUT_DIR)dcrt0.o -L$(OUTPUT_DIR) -lkernel -o $@
-
-WARNCFLAG = -Wall -Wextra
-
-%.o: %.c $(HEADERS)
-	$(info Compiling $<)
-	$(CC) $(DRIVER_CFLAGS) $(WARNCFLAG) -std=c17 -c $< -o $@
-
-%.o: %.cpp $(HEADERS)
-	$(info Compiling $<)
-	$(CXX) $(DRIVER_CFLAGS) $(WARNCFLAG) -std=c++20 -fno-exceptions -fno-rtti -c $< -o $@
-
-%.o: %.S
-	$(info Compiling $<)
-	$(AS) -o $@ $<
+	$(CC) $(DRIVER_LDFLAGS) $(OBJ) ../../out/dcrt0.o -L../../out -lkernel -o $@
 
 clean:
 	rm -f file.map $(OBJ) $(STACK_USAGE_OBJ)

Drivers/network/rtl8139/Makefile

@@ -1,35 +1,22 @@
-default:
-	$(error Do not run this Makefile directly!)
+# Config files
+include ../../../Makefile.conf
+include ../../config.mk
 
 S_SOURCES = $(shell find ./ -type f -name '*.S')
 C_SOURCES = $(shell find ./ -type f -name '*.c')
-CXX_SOURCES = $(shell find ./ -type f -name '*.cpp')
+CPP_SOURCES = $(shell find ./ -type f -name '*.cpp')
 HEADERS = $(sort $(dir $(wildcard ../../include/*)))
-OBJ = $(C_SOURCES:.c=.o) $(CXX_SOURCES:.cpp=.o) $(S_SOURCES:.S=.o)
-STACK_USAGE_OBJ = $(C_SOURCES:.c=.su) $(CXX_SOURCES:.cpp=.su)
+OBJ = $(C_SOURCES:.c=.o) $(CPP_SOURCES:.cpp=.o) $(S_SOURCES:.S=.o)
+STACK_USAGE_OBJ = $(C_SOURCES:.c=.su) $(CPP_SOURCES:.cpp=.su)
 
-FILENAME = $(notdir $(shell pwd)).drv
+FILENAME = rtl8139.drv
 
 build: $(FILENAME)
-	mv $(FILENAME) $(OUTPUT_DIR)$(FILENAME)
+	mv $(FILENAME) ../../out/$(FILENAME)
 
 $(FILENAME): $(OBJ)
 	$(info Linking $@)
-	$(CC) $(DRIVER_LDFLAGS) $(OBJ) $(OUTPUT_DIR)dcrt0.o -L$(OUTPUT_DIR) -lkernel -o $@
-
-WARNCFLAG = -Wall -Wextra
-
-%.o: %.c $(HEADERS)
-	$(info Compiling $<)
-	$(CC) $(DRIVER_CFLAGS) $(WARNCFLAG) -std=c17 -c $< -o $@
-
-%.o: %.cpp $(HEADERS)
-	$(info Compiling $<)
-	$(CXX) $(DRIVER_CFLAGS) $(WARNCFLAG) -std=c++20 -fno-exceptions -fno-rtti -c $< -o $@
-
-%.o: %.S
-	$(info Compiling $<)
-	$(AS) -o $@ $<
+	$(CC) $(DRIVER_LDFLAGS) $(OBJ) ../../out/dcrt0.o -L../../out -lkernel -o $@
 
 clean:
 	rm -f file.map $(OBJ) $(STACK_USAGE_OBJ)

Drivers/storage/ahci/Makefile

@@ -1,35 +1,22 @@
-default:
-	$(error Do not run this Makefile directly!)
+# Config files
+include ../../../Makefile.conf
+include ../../config.mk
 
 S_SOURCES = $(shell find ./ -type f -name '*.S')
 C_SOURCES = $(shell find ./ -type f -name '*.c')
-CXX_SOURCES = $(shell find ./ -type f -name '*.cpp')
+CPP_SOURCES = $(shell find ./ -type f -name '*.cpp')
 HEADERS = $(sort $(dir $(wildcard ../../include/*)))
-OBJ = $(C_SOURCES:.c=.o) $(CXX_SOURCES:.cpp=.o) $(S_SOURCES:.S=.o)
-STACK_USAGE_OBJ = $(C_SOURCES:.c=.su) $(CXX_SOURCES:.cpp=.su)
+OBJ = $(C_SOURCES:.c=.o) $(CPP_SOURCES:.cpp=.o) $(S_SOURCES:.S=.o)
+STACK_USAGE_OBJ = $(C_SOURCES:.c=.su) $(CPP_SOURCES:.cpp=.su)
 
-FILENAME = $(notdir $(shell pwd)).drv
+FILENAME = ahci.drv
 
 build: $(FILENAME)
-	mv $(FILENAME) $(OUTPUT_DIR)$(FILENAME)
+	mv $(FILENAME) ../../out/$(FILENAME)
 
 $(FILENAME): $(OBJ)
 	$(info Linking $@)
-	$(CC) $(DRIVER_LDFLAGS) $(OBJ) $(OUTPUT_DIR)dcrt0.o -L$(OUTPUT_DIR) -lkernel -o $@
-
-WARNCFLAG = -Wall -Wextra
-
-%.o: %.c $(HEADERS)
-	$(info Compiling $<)
-	$(CC) $(DRIVER_CFLAGS) $(WARNCFLAG) -std=c17 -c $< -o $@
-
-%.o: %.cpp $(HEADERS)
-	$(info Compiling $<)
-	$(CXX) $(DRIVER_CFLAGS) $(WARNCFLAG) -std=c++20 -fno-exceptions -fno-rtti -c $< -o $@
-
-%.o: %.S
-	$(info Compiling $<)
-	$(AS) -o $@ $<
+	$(CC) $(DRIVER_LDFLAGS) $(OBJ) ../../out/dcrt0.o -L../../out -lkernel -o $@
 
 clean:
 	rm -f file.map $(OBJ) $(STACK_USAGE_OBJ)

Drivers/storage/ata/Makefile

@@ -1,35 +1,22 @@
-default:
-	$(error Do not run this Makefile directly!)
+# Config files
+include ../../../Makefile.conf
+include ../../config.mk
 
 S_SOURCES = $(shell find ./ -type f -name '*.S')
 C_SOURCES = $(shell find ./ -type f -name '*.c')
-CXX_SOURCES = $(shell find ./ -type f -name '*.cpp')
+CPP_SOURCES = $(shell find ./ -type f -name '*.cpp')
 HEADERS = $(sort $(dir $(wildcard ../../include/*)))
-OBJ = $(C_SOURCES:.c=.o) $(CXX_SOURCES:.cpp=.o) $(S_SOURCES:.S=.o)
-STACK_USAGE_OBJ = $(C_SOURCES:.c=.su) $(CXX_SOURCES:.cpp=.su)
+OBJ = $(C_SOURCES:.c=.o) $(CPP_SOURCES:.cpp=.o) $(S_SOURCES:.S=.o)
+STACK_USAGE_OBJ = $(C_SOURCES:.c=.su) $(CPP_SOURCES:.cpp=.su)
 
-FILENAME = $(notdir $(shell pwd)).drv
+FILENAME = ata.drv
 
 build: $(FILENAME)
-	mv $(FILENAME) $(OUTPUT_DIR)$(FILENAME)
+	mv $(FILENAME) ../../out/$(FILENAME)
 
 $(FILENAME): $(OBJ)
 	$(info Linking $@)
-	$(CC) $(DRIVER_LDFLAGS) $(OBJ) $(OUTPUT_DIR)dcrt0.o -L$(OUTPUT_DIR) -lkernel -o $@
-
-WARNCFLAG = -Wall -Wextra
-
-%.o: %.c $(HEADERS)
-	$(info Compiling $<)
-	$(CC) $(DRIVER_CFLAGS) $(WARNCFLAG) -std=c17 -c $< -o $@
-
-%.o: %.cpp $(HEADERS)
-	$(info Compiling $<)
-	$(CXX) $(DRIVER_CFLAGS) $(WARNCFLAG) -std=c++20 -fno-exceptions -fno-rtti -c $< -o $@
-
-%.o: %.S
-	$(info Compiling $<)
-	$(AS) -o $@ $<
+	$(CC) $(DRIVER_LDFLAGS) $(OBJ) ../../out/dcrt0.o -L../../out -lkernel -o $@
 
 clean:
 	rm -f file.map $(OBJ) $(STACK_USAGE_OBJ)

Fennix Drivers.code-workspace

@@ -5,11 +5,108 @@
 		}
 	],
 	"settings": {
-		"terminal.integrated.cwd": "../",
 		"debug.allowBreakpointsEverywhere": true,
-		"git.alwaysSignOff": true,
-		"git.defaultBranchName": "master",
-		"git.openRepositoryInParentFolders": "always",
-		"C_Cpp.autoAddFileAssociations": false
+		"cSpell.words": [
+			"ABAR",
+			"ABSPOINTER",
+			"AHCI",
+			"BIST",
+			"Cardbus",
+			"CFIEN",
+			"cmdret",
+			"cmpb",
+			"driverinfo",
+			"ECTRL",
+			"EEPROM",
+			"Fennix",
+			"GETVERSION",
+			"HBAPRDT",
+			"IFCS",
+			"inportb",
+			"inportl",
+			"inportw",
+			"INTX",
+			"KAPI",
+			"LEDS",
+			"LPBK",
+			"LSTA",
+			"mminb",
+			"mminl",
+			"mminq",
+			"mminw",
+			"mmioin",
+			"mmioout",
+			"mmoutb",
+			"mmoutl",
+			"mmoutw",
+			"NABM",
+			"NABMB",
+			"NABMBOFF",
+			"outportb",
+			"outportl",
+			"outportw",
+			"PCIBAR",
+			"PCMOUT",
+			"PCNET",
+			"PCTRL",
+			"PMCF",
+			"PORTHB",
+			"PRDT",
+			"Prefetchable",
+			"RCTL",
+			"RCTRL",
+			"RDMTS",
+			"RDTR",
+			"rpci",
+			"RSRPD",
+			"RTCL",
+			"RTLC",
+			"RTLIB",
+			"RTLIL",
+			"RTLIW",
+			"RTLOB",
+			"RTLOL",
+			"RTLOW",
+			"RXDCTL",
+			"RXDESCHEAD",
+			"RXDESCHI",
+			"RXDESCLEN",
+			"RXDESCLO",
+			"RXDESCTAIL",
+			"Sata",
+			"SATAPI",
+			"SECRC",
+			"SEMB",
+			"SWXOFF",
+			"tclo",
+			"TCTL",
+			"TCTRL",
+			"TFES",
+			"TIPG",
+			"TSAD",
+			"TSTA",
+			"TXDESCHEAD",
+			"TXDESCHI",
+			"TXDESCLEN",
+			"TXDESCLO",
+			"TXDESCTAIL",
+			"TYPEMATIC",
+			"ubit",
+			"Virtio",
+			"Wmissing"
+		],
+		"files.associations": {
+			"*.su": "tsv",
+			"driver.h": "c",
+			"base.h": "c",
+			"types.h": "c",
+			"syscall.h": "c",
+			"aip.h": "c",
+			"input.h": "c",
+			"errno.h": "c",
+			"io.h": "c",
+			"rtl8139.hpp": "c",
+			"net.h": "c"
+		}
 	}
 }

Fennix Kernel.code-workspace

@@ -5,8 +5,513 @@
 		}
 	],
 	"settings": {
-		"terminal.integrated.cwd": "../",
 		"debug.allowBreakpointsEverywhere": true,
+		"files.associations": {
+			"*.su": "tsv",
+			"thread": "cpp",
+			"bitset": "cpp",
+			"initializer_list": "cpp",
+			"semaphore": "cpp",
+			"memory": "cpp",
+			"limits": "cpp",
+			"climits": "cpp",
+			"iterator": "cpp",
+			"ranges": "cpp",
+			"cassert": "cpp",
+			"concepts": "cpp",
+			"cctype": "cpp",
+			"tuple": "cpp",
+			"streambuf": "cpp",
+			"system_error": "cpp",
+			"coroutine": "cpp",
+			"static_vector": "cpp",
+			"string_view": "cpp",
+			"compare": "cpp",
+			"limine.h": "c",
+			"types.h": "c",
+			"binfo.h": "c",
+			"liballoc_1_1.h": "c",
+			"cstring": "cpp",
+			"cargs.h": "c",
+			"memory.hpp": "c",
+			"convert.h": "c",
+			"limits.h": "c",
+			"assert.h": "c",
+			"cwalk.h": "c",
+			"md5.h": "c",
+			"stdint.h": "c",
+			"debug.h": "c",
+			"ubsan.h": "c",
+			"kernel.h": "c",
+			"filesystem.hpp": "c",
+			"vector.hpp": "c",
+			"string.hpp": "c",
+			"nc.hpp": "c",
+			"vector": "c",
+			"task.hpp": "c",
+			"recovery.hpp": "c",
+			"symbols.hpp": "c",
+			"cstddef": "cpp",
+			"atomic.hpp": "c",
+			"atomic": "cpp",
+			"syscalls.h": "c",
+			"cmath": "cpp",
+			"typeinfo": "c",
+			"exception": "cpp",
+			"errno.h": "c",
+			"float.h": "c",
+			"mutex": "cpp",
+			"type_trails": "cpp",
+			"utility": "cpp",
+			"algorithm": "cpp",
+			"functional": "cpp",
+			"stdio.h": "c",
+			"string": "cpp",
+			"list": "cpp",
+			"stdexcept": "cpp",
+			"unistd.h": "c",
+			"unordered_map": "cpp",
+			"sched.h": "c",
+			"mman.h": "c",
+			"string.h": "c",
+			"macro.hpp": "c",
+			"stddef.h": "c",
+			"cfloat": "c",
+			"type_traits": "cpp",
+			"stdlib.h": "c",
+			"new": "cpp",
+			"ostream": "cpp",
+			"iostream": "cpp",
+			"istream": "cpp",
+			"ios": "cpp",
+			"locale": "cpp",
+			"unwind.h": "c",
+			"memory.h": "c",
+			"physical.hpp": "c",
+			"swap_pt.hpp": "c",
+			"brk.hpp": "c",
+			"bitmap.hpp": "c",
+			"lock.hpp": "c",
+			"virtual.hpp": "c",
+			"table.hpp": "c",
+			"vma.hpp": "c",
+			"abi.h": "c",
+			"kstack.hpp": "c",
+			"stack.hpp": "c",
+			"optional": "cpp"
+		},
+		"cSpell.words": [
+			"AABBCC",
+			"AAFF",
+			"AAFFAA",
+			"ABAR",
+			"ABIVERSION",
+			"ABSPOINTER",
+			"ACPI",
+			"ACPINVS",
+			"addralign",
+			"AEFF",
+			"AFAFAF",
+			"AHBA",
+			"AHCI",
+			"ALTLBA",
+			"APERF",
+			"apic",
+			"APICID",
+			"archaux",
+			"AROS",
+			"ARRAYSZ",
+			"auxv",
+			"BABABA",
+			"BADRAM",
+			"BGRT",
+			"bimi",
+			"binfo",
+			"biosdev",
+			"BIST",
+			"BITALG",
+			"BLOCKDEV",
+			"BLOCKDEVICE",
+			"BNDCFGS",
+			"bochs",
+			"bootanim",
+			"bootdev",
+			"Bootloader",
+			"brontobyte",
+			"CACACA",
+			"calloc",
+			"Cardbus",
+			"CCCCCCCPU",
+			"CHARDEV",
+			"CHARDEVICE",
+			"charsize",
+			"clac",
+			"CLOUDABI",
+			"CMCI",
+			"CMOS",
+			"cntvct",
+			"COMNULL",
+			"copydoc",
+			"cpudata",
+			"CPUID",
+			"crashdata",
+			"CSTAR",
+			"CTLS",
+			"cutlim",
+			"DADADA",
+			"daif",
+			"daifclr",
+			"daifset",
+			"DAPI",
+			"DBGP",
+			"DEBUGCTL",
+			"defragment",
+			"dfdesc",
+			"dialup",
+			"Didx",
+			"DLAB",
+			"Drivermemcpy",
+			"Drivermemset",
+			"Driversprintf",
+			"drvdir",
+			"DRVER",
+			"DSDT",
+			"DUID",
+			"dynstr",
+			"dynsym",
+			"EBDA",
+			"edid",
+			"EEPROM",
+			"EFER",
+			"Ehdr",
+			"ehsize",
+			"EISA",
+			"ELFABI",
+			"ELFCLASS",
+			"ELFDATA",
+			"ELFMAG",
+			"ELFOSABI",
+			"EMMINTRIN",
+			"endregion",
+			"Ensoniq",
+			"EVTSEL",
+			"EXECFN",
+			"exobyte",
+			"EXTD",
+			"FADT",
+			"FAFAFA",
+			"FAFAFAI",
+			"Fargc",
+			"Fargv",
+			"fcreat",
+			"fctprintf",
+			"Femto",
+			"FENIXOS",
+			"FENNIX",
+			"FFAA",
+			"FFAAAA",
+			"FFSMBIOS",
+			"FFXSR",
+			"filestatus",
+			"FMAPS",
+			"fonthdr",
+			"Framebuffer",
+			"FSGSBASE",
+			"fsmi",
+			"fxrstor",
+			"fxsave",
+			"Gamepad",
+			"Gameport",
+			"geopbyte",
+			"GETVERSION",
+			"GFNI",
+			"haddpd",
+			"headersize",
+			"HIPROC",
+			"HPET",
+			"hwaddress",
+			"ICRHI",
+			"ICRLO",
+			"IDIV",
+			"idtd",
+			"IFHLNK",
+			"infloop",
+			"inportb",
+			"inportl",
+			"inportw",
+			"INTFASTX",
+			"INTLEASTX",
+			"INTX",
+			"invlpg",
+			"ioapic",
+			"ioapicirq",
+			"IOCTLFS",
+			"IPCID",
+			"IRET",
+			"iretq",
+			"isdelim",
+			"ishld",
+			"ishst",
+			"itimerspec",
+			"itrfb",
+			"JMPREL",
+			"KAPI",
+			"KAPIPCI",
+			"kcalloc",
+			"kcon",
+			"kdentry",
+			"kdirent",
+			"kernelctl",
+			"kfree",
+			"klog",
+			"kmalloc",
+			"kproc",
+			"krealloc",
+			"kthrd",
+			"lapic",
+			"lfanew",
+			"LFLR",
+			"lgdt",
+			"liballoc",
+			"LIBLIST",
+			"lidt",
+			"limine",
+			"LMSLE",
+			"LOPROC",
+			"lsacpi",
+			"LSTAR",
+			"MADT",
+			"MADTIO",
+			"malloc",
+			"MCFG",
+			"memdbg",
+			"memmap",
+			"memsz",
+			"MEMTEST",
+			"mfence",
+			"MIDR",
+			"mminb",
+			"mminl",
+			"mminq",
+			"mminw",
+			"mmioin",
+			"mmioout",
+			"mmoutb",
+			"mmoutl",
+			"mmoutq",
+			"mmoutw",
+			"modbg",
+			"Modulememcpy",
+			"Modulememset",
+			"Modulesprintf",
+			"movaps",
+			"movddup",
+			"movdqa",
+			"movdqu",
+			"movntdq",
+			"movntdqa",
+			"movw",
+			"MPERF",
+			"MSRID",
+			"MTRR",
+			"MTRRCAP",
+			"multiboot",
+			"MWAIT",
+			"newfstatat",
+			"NIDENT",
+			"NOBITS",
+			"nullfd",
+			"nullptr",
+			"objptr",
+			"OEMID",
+			"Ofast",
+			"okstat",
+			"oldfd",
+			"OPENVOS",
+			"OPTMZ",
+			"OSABI",
+			"OSFXSR",
+			"OSXMMEXCPT",
+			"OSXSAVE",
+			"Outof",
+			"outportb",
+			"outportl",
+			"outportw",
+			"PAGESZ",
+			"palignr",
+			"PCIDE",
+			"pcmpistri",
+			"PCNET",
+			"PDBR",
+			"PDPTE",
+			"PEBS",
+			"PERFEVTSEL",
+			"PEXIT",
+			"PFLA",
+			"Phdrs",
+			"pheader",
+			"PHENT",
+			"phentsize",
+			"phnum",
+			"phoff",
+			"PHYSBASE",
+			"PHYSMASK",
+			"Pico",
+			"PINBASED",
+			"Pipefd",
+			"PKRU",
+			"PLTGOT",
+			"PLTREL",
+			"PLTRELSZ",
+			"POPCNT",
+			"PORTHB",
+			"powerline",
+			"Prefetchable",
+			"PREINIT",
+			"PROCBASED",
+			"PROGBITS",
+			"PTMX",
+			"ptys",
+			"pushfl",
+			"pushfq",
+			"Raphson",
+			"RARP",
+			"RBSTART",
+			"rdmsr",
+			"RDRAND",
+			"rdseed",
+			"rdtsc",
+			"readcr",
+			"readxcr",
+			"realloc",
+			"Realtek",
+			"RELAENT",
+			"RELASZ",
+			"RELSZ",
+			"Rodata",
+			"RPCI",
+			"rpmalloc",
+			"RRGGBB",
+			"RSDP",
+			"RSDT",
+			"RTIT",
+			"SATA",
+			"schedbg",
+			"SERCOS",
+			"serialports",
+			"sfence",
+			"sgdt",
+			"SGXLEPUBKEYHASH",
+			"Shdr",
+			"Sheader",
+			"shentsize",
+			"shnum",
+			"shoff",
+			"showbuf",
+			"shstrndx",
+			"shstrtab",
+			"sidt",
+			"SIGCOMP",
+			"sigsetsize",
+			"SIVR",
+			"SMAP",
+			"SMBASE",
+			"SMBIOSBIOS",
+			"SMEP",
+			"SMRR",
+			"SMXE",
+			"SNTP",
+			"SRAT",
+			"SSDT",
+			"sspt",
+			"SSSE",
+			"stac",
+			"strdbg",
+			"STRSZ",
+			"SVME",
+			"swapgs",
+			"Symbios",
+			"SYMENT",
+			"SYSENTER",
+			"sysret",
+			"sysretq",
+			"Tamsyn",
+			"targp",
+			"TCCR",
+			"TCLO",
+			"TCPA",
+			"TDCR",
+			"TEXIT",
+			"TEXTREL",
+			"Thrd",
+			"TICR",
+			"tlbi",
+			"Touchpad",
+			"tracepagetable",
+			"tskdbg",
+			"ttbr",
+			"uarch",
+			"uartmemdmp",
+			"ubsan",
+			"UINTFASTX",
+			"UINTLEASTX",
+			"UINTX",
+			"ultoa",
+			"UMIP",
+			"UMWAIT",
+			"UNMAP",
+			"Unmaskable",
+			"Unreserving",
+			"unseek",
+			"Unswap",
+			"unsynchronized",
+			"UPDT",
+			"UPID",
+			"uroot",
+			"UTID",
+			"VAES",
+			"VBMI",
+			"vectorize",
+			"vfctprintf",
+			"vfsdbg",
+			"Vidx",
+			"Virtio",
+			"VMCS",
+			"VMFUNC",
+			"vmouse",
+			"VMXE",
+			"VNNI",
+			"VNNIW",
+			"VPCLMULQDQ",
+			"VPID",
+			"VPOKE",
+			"VPOPCNTDQ",
+			"WAET",
+			"weakrefalias",
+			"Wignored",
+			"Wmissing",
+			"writecr",
+			"writexcr",
+			"wrmsr",
+			"WWVB",
+			"WWVH",
+			"Xalloc",
+			"xallocv",
+			"Xclac",
+			"xgetbv",
+			"Xmemcpy",
+			"Xmemset",
+			"XSDT",
+			"Xsize",
+			"XSLC",
+			"XSLF",
+			"XSLM",
+			"XSLR",
+			"Xstac",
+			"Xuintptr",
+			"yottabyte",
+			"zettabyte"
+		],
 		"editor.tabCompletion": "on",
 		"diffEditor.codeLens": true,
 		"editor.quickSuggestionsDelay": 100,
@@ -22,10 +527,6 @@
 		"editor.cursorBlinking": "blink",
 		"editor.cursorSmoothCaretAnimation": "on",
 		"editor.cursorStyle": "line",
-		"editor.cursorWidth": 2,
-		"git.alwaysSignOff": true,
-		"git.defaultBranchName": "master",
-		"git.openRepositoryInParentFolders": "always",
-		"C_Cpp.autoAddFileAssociations": false
+		"editor.cursorWidth": 2
 	}
 }

Fennix Lynx.code-workspace

@@ -0,0 +1,22 @@
+{
+	"folders": [
+		{
+			"path": "./Lynx"
+		}
+	],
+	"settings": {
+		"debug.allowBreakpointsEverywhere": true,
+		"files.associations": {
+			"*.su": "tsv",
+			"limine.h": "c"
+		},
+		"cSpell.words": [
+			"Bootloader",
+			"COMNULL",
+			"CPUID",
+			"FENNIX",
+			"JMPREL",
+			"UBSAN"
+		]
+	}
+}

Fennix Userspace.code-workspace

@@ -5,11 +5,67 @@
 		}
 	],
 	"settings": {
-		"terminal.integrated.cwd": "../",
 		"debug.allowBreakpointsEverywhere": true,
-		"git.alwaysSignOff": true,
-		"git.defaultBranchName": "master",
-		"git.openRepositoryInParentFolders": "always",
-		"C_Cpp.autoAddFileAssociations": false
+		"files.associations": {
+			"*.su": "tsv",
+			"thread": "cpp",
+			"bitset": "cpp",
+			"initializer_list": "cpp",
+			"fex.hpp": "c",
+			"types.h": "c",
+			"dlfcn.h": "c",
+			"aux.h": "c",
+			"stddef.h": "c",
+			"stdio.h": "c",
+			"syscalls.h": "c",
+			"syslib.h": "c",
+			"sysfile.h": "c",
+			"ipc.h": "c",
+			"sysbase.h": "c",
+			"inttypes.h": "c",
+			"doomkeys.h": "c",
+			"doomgeneric.h": "c",
+			"elf.h": "c",
+			"init.h": "c",
+			"unused_code": "cpp",
+			"liballoc_1_1.h": "c",
+			"errno.h": "c",
+			"stdlib.h": "c",
+			"stdarg.h": "c",
+			"printf.h": "c",
+			"ctype.h": "c",
+			"unistd.h": "c",
+			"stat.h": "c",
+			"wait.h": "c",
+			"base.h": "c",
+			"ld.h": "c",
+			"syscall.h": "c",
+			"stdint.h": "c",
+			"setjmp.h": "c",
+			"limits.h": "c",
+			"fcntl.h": "c",
+			"pty.h": "c",
+			"string.h": "c",
+			"time.h": "c",
+			"reboot.h": "c",
+			"*.in": "c",
+			"signal.h": "c",
+			"alltypes.h": "c",
+			"pr44328.C": "cpp"
+		},
+		"cSpell.words": [
+			"auxv",
+			"cmpq",
+			"FENNIX",
+			"JMPREL",
+			"Krnl",
+			"liballoc",
+			"libinit",
+			"oldpath",
+			"preinit",
+			"Shdr",
+			"vfctprintf",
+			"WAITSTATUS"
+		]
 	}
 }

Fennix Website.code-workspace

@@ -1,14 +0,0 @@
-{
-	"folders": [
-		{
-			"path": "./tools/website"
-		}
-	],
-	"settings": {
-		"debug.allowBreakpointsEverywhere": true,
-		"git.alwaysSignOff": true,
-		"git.defaultBranchName": "master",
-		"git.openRepositoryInParentFolders": "always",
-		"C_Cpp.autoAddFileAssociations": false
-	}
-}

Fennix.code-workspace

@@ -6,9 +6,30 @@
 	],
 	"settings": {
 		"debug.allowBreakpointsEverywhere": true,
-		"git.alwaysSignOff": true,
-		"git.defaultBranchName": "master",
-		"git.openRepositoryInParentFolders": "always",
-		"C_Cpp.autoAddFileAssociations": false
+		"files.associations": {
+			"*.su": "tsv",
+			"thread": "cpp",
+			"bitset": "cpp",
+			"initializer_list": "cpp",
+			"semaphore": "cpp",
+			"memory": "cpp",
+			"limits": "cpp",
+			"climits": "cpp",
+			"iterator": "cpp",
+			"ranges": "cpp",
+			"cassert": "cpp",
+			"concepts": "cpp",
+			"cctype": "cpp",
+			"tuple": "cpp",
+			"streambuf": "cpp",
+			"system_error": "cpp",
+			"coroutine": "cpp",
+			"static_vector": "cpp",
+			"string_view": "cpp",
+			"compare": "cpp",
+			"ostream": "cpp",
+			"unordered_map": "cpp",
+			"vector": "cpp"
+		}
 	}
 }

Kernel/.gdbinit

@@ -1,91 +0,0 @@
-# Usage: add-symbol-file-all <filename> [<offset>]
-#        remove-symbol-file-all <filename> [<offset>]
-#
-# Credit: https://stackoverflow.com/a/33087762/9352057
-#         CC BY-SA 4.0
-
-python
-import subprocess
-import re
-
-def relocatesections(filename, addr):
-    p = subprocess.Popen(["readelf", "-S", filename], stdout = subprocess.PIPE)
-
-    sections = []
-    textaddr = '0'
-    for line in p.stdout.readlines():
-        line = line.decode("utf-8").strip()
-        if not line.startswith('[') or line.startswith('[Nr]'):
-            continue
-
-        line = re.sub(r' +', ' ', line)
-        line = re.sub(r'\[ *(\d+)\]', '\g<1>', line)
-        fieldsvalue = line.split(' ')
-        fieldsname = ['number', 'name', 'type', 'addr', 'offset', 'size', 'entsize', 'flags', 'link', 'info', 'addralign']
-        sec = dict(zip(fieldsname, fieldsvalue))
-
-        if sec['number'] == '0':
-            continue
-
-        sections.append(sec)
-
-        if sec['name'] == '.text':
-            textaddr = sec['addr']
-
-    return (textaddr, sections)
-
-
-class AddSymbolFileAll(gdb.Command):
-    """The right version for add-symbol-file"""
-
-    def __init__(self):
-        super(AddSymbolFileAll, self).__init__("add-symbol-file-all", gdb.COMMAND_USER)
-        self.dont_repeat()
-
-    def invoke(self, arg, from_tty):
-        argv = gdb.string_to_argv(arg)
-        filename = argv[0]
-
-        if len(argv) > 1:
-            offset = int(str(gdb.parse_and_eval(argv[1])), 0)
-        else:
-            offset = 0
-
-        (textaddr, sections) = relocatesections(filename, offset)
-
-        cmd = "add-symbol-file %s 0x%08x" % (filename, int(textaddr, 16) + offset)
-
-        for s in sections:
-            addr = int(s['addr'], 16)
-            if s['name'] == '.text' or addr == 0:
-                continue
-
-            cmd += " -s %s 0x%08x" % (s['name'], addr + offset)
-
-        gdb.execute(cmd)
-
-class RemoveSymbolFileAll(gdb.Command):
-    """The right version for remove-symbol-file"""
-
-    def __init__(self):
-        super(RemoveSymbolFileAll, self).__init__("remove-symbol-file-all", gdb.COMMAND_USER)
-        self.dont_repeat()
-
-    def invoke(self, arg, from_tty):
-        argv = gdb.string_to_argv(arg)
-        filename = argv[0]
-
-        if len(argv) > 1:
-            offset = int(str(gdb.parse_and_eval(argv[1])), 0)
-        else:
-            offset = 0
-
-        (textaddr, _) = relocatesections(filename, offset)
-
-        cmd = "remove-symbol-file -a 0x%08x" % (int(textaddr, 16) + offset)
-        gdb.execute(cmd)
-
-
-AddSymbolFileAll()
-RemoveSymbolFileAll()
-end

Kernel/.github/workflows/codacy.yml

@@ -0,0 +1,61 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+# This workflow checks out code, performs a Codacy security scan
+# and integrates the results with the
+# GitHub Advanced Security code scanning feature.  For more information on
+# the Codacy security scan action usage and parameters, see
+# https://github.com/codacy/codacy-analysis-cli-action.
+# For more information on Codacy Analysis CLI in general, see
+# https://github.com/codacy/codacy-analysis-cli.
+
+name: Codacy Security Scan
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ "main" ]
+  schedule:
+    - cron: '27 22 * * 5'
+
+permissions:
+  contents: read
+
+jobs:
+  codacy-security-scan:
+    permissions:
+      contents: read # for actions/checkout to fetch code
+      security-events: write # for github/codeql-action/upload-sarif to upload SARIF results
+      actions: read # only required for a private repository by github/codeql-action/upload-sarif to get the Action run status
+    name: Codacy Security Scan
+    runs-on: ubuntu-latest
+    steps:
+      # Checkout the repository to the GitHub Actions runner
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      # Execute Codacy Analysis CLI and generate a SARIF output with the security issues identified during the analysis
+      - name: Run Codacy Analysis CLI
+        uses: codacy/codacy-analysis-cli-action@d840f886c4bd4edc059706d09c6a1586111c540b
+        with:
+          # Check https://github.com/codacy/codacy-analysis-cli#project-token to get your project token from your Codacy repository
+          # You can also omit the token and run the tools that support default configurations
+          project-token: ${{ secrets.CODACY_PROJECT_TOKEN }}
+          verbose: true
+          output: results.sarif
+          format: sarif
+          # Adjust severity of non-security issues
+          gh-code-scanning-compat: true
+          # Force 0 exit code to allow SARIF file generation
+          # This will handover control about PR rejection to the GitHub side
+          max-allowed-issues: 2147483647
+
+      # Upload the SARIF file generated in the previous step
+      - name: Upload SARIF results file
+        uses: github/codeql-action/upload-sarif@v2
+        with:
+          sarif_file: results.sarif

Kernel/.github/workflows/flawfinder.yml

@@ -0,0 +1,38 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+name: flawfinder
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ "main" ]
+  schedule:
+    - cron: '21 1 * * 1'
+
+jobs:
+  flawfinder:
+    name: Flawfinder
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: flawfinder_scan
+        uses: david-a-wheeler/flawfinder@8e4a779ad59dbfaee5da586aa9210853b701959c
+        with:
+          arguments: '--sarif ./'
+          output: 'flawfinder_results.sarif'
+
+      - name: Upload analysis results to GitHub Security tab
+        uses: github/codeql-action/upload-sarif@v2
+        with:
+          sarif_file: ${{github.workspace}}/flawfinder_results.sarif

Kernel/.gitignore

@@ -2,5 +2,6 @@
 *.su
 *.gcno
 *.map
-fennix.elf
+*.fsys
 *.log
+.dccache

Kernel/.vscode/c_boilerplates.code-snippets

@@ -1,69 +1,17 @@
 {
-	"Fennix Kernel C++ Header": {
-		"isFileTemplate": true,
-		"scope": "c,cpp",
+	"Fennix Kernel Header": {
 		"prefix": [
 			"head",
 		],
 		"body": [
-			"/*",
-			"\tThis file is part of Fennix Kernel.",
-			"",
-			"\tFennix Kernel is free software: you can redistribute it and/or",
-			"\tmodify it under the terms of the GNU General Public License as",
-			"\tpublished by the Free Software Foundation, either version 3 of",
-			"\tthe License, or (at your option) any later version.",
-			"",
-			"\tFennix Kernel is distributed in the hope that it will be useful,",
-			"\tbut WITHOUT ANY WARRANTY; without even the implied warranty of",
-			"\tMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the",
-			"\tGNU General Public License for more details.",
-			"",
-			"\tYou should have received a copy of the GNU General Public License",
-			"\talong with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.",
-			"*/",
-			"",
-			"#pragma once",
-			"",
-			"$0",
-			"",
-			"$1",
-			""
-		],
-		"description": "Create kernel header."
-	},
-	"Fennix Kernel C Header": {
-		"isFileTemplate": true,
-		"scope": "c,cpp",
-		"prefix": [
-			"headc",
-		],
-		"body": [
-			"/*",
-			"\tThis file is part of Fennix Kernel.",
-			"",
-			"\tFennix Kernel is free software: you can redistribute it and/or",
-			"\tmodify it under the terms of the GNU General Public License as",
-			"\tpublished by the Free Software Foundation, either version 3 of",
-			"\tthe License, or (at your option) any later version.",
-			"",
-			"\tFennix Kernel is distributed in the hope that it will be useful,",
-			"\tbut WITHOUT ANY WARRANTY; without even the implied warranty of",
-			"\tMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the",
-			"\tGNU General Public License for more details.",
-			"",
-			"\tYou should have received a copy of the GNU General Public License",
-			"\talong with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.",
-			"*/",
-			"",
-			"#ifndef __FENNIX_KERNEL_${1:header}_H__",
-			"#define __FENNIX_KERNEL_${1:header}_H__",
+			"#ifndef __FENNIX_KERNEL_${2:header}_H__",
+			"#define __FENNIX_KERNEL_${2:header}_H__",
 			"",
 			"#include <types.h>",
 			"",
 			"$0",
 			"",
-			"#endif // !__FENNIX_KERNEL_${1:header}_H__",
+			"#endif // !__FENNIX_KERNEL_${2:header}_H__",
 			""
 		],
 		"description": "Create kernel header."
@@ -76,30 +24,5 @@
 			"/** @brief $0 */"
 		],
 		"description": "Create kernel documentation brief."
-	},
-	"License": {
-		"isFileTemplate": true,
-		"prefix": [
-			"license",
-		],
-		"body": [
-			"/*",
-			"\tThis file is part of Fennix Kernel.",
-			"",
-			"\tFennix Kernel is free software: you can redistribute it and/or",
-			"\tmodify it under the terms of the GNU General Public License as",
-			"\tpublished by the Free Software Foundation, either version 3 of",
-			"\tthe License, or (at your option) any later version.",
-			"",
-			"\tFennix Kernel is distributed in the hope that it will be useful,",
-			"\tbut WITHOUT ANY WARRANTY; without even the implied warranty of",
-			"\tMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the",
-			"\tGNU General Public License for more details.",
-			"",
-			"\tYou should have received a copy of the GNU General Public License",
-			"\talong with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.",
-			"*/"
-		],
-		"description": "Create kernel license."
 	}
 }

Kernel/.vscode/c_cpp_properties.json

@@ -4,18 +4,18 @@
             "name": "Fennix x64 (Linux, GCC, debug)",
             "includePath": [
                 "${workspaceFolder}/include",
-				"${workspaceFolder}/include/**",
-				"${workspaceFolder}/include_std",
-				"${workspaceFolder}/include_std/**",
-				"${workspaceFolder}/arch/amd64/include"
+                "${workspaceFolder}/include/**"
             ],
             "defines": [
+                "__debug_vscode__",
+                "KERNEL_NAME=\"Fennix\"",
+                "KERNEL_VERSION=\"1.0\"",
+                "GIT_COMMIT=\"0000000000000000000000000000000000000000\"",
+                "GIT_COMMIT_SHORT=\"0000000\"",
+                "a64",
                 "DEBUG=\"1\""
             ],
-			"forcedInclude": [
-				"${workspaceFolder}/.vscode/preinclude.h"
-			],
-			"compilerPath": "${workspaceFolder}/../tools/cross/bin/x86_64-fennix-gcc",
+            "compilerPath": "${workspaceFolder}/../tools/cross/bin/amd64-elf-gcc",
             "cStandard": "c17",
             "cppStandard": "c++20",
             "intelliSenseMode": "gcc-x64",
@@ -29,30 +29,20 @@
                 "-pipe",
                 "-mcmodel=kernel",
                 "-fno-builtin",
-				"-m64",
-				"-fcoroutines",
-				// Warnings
-				"-Wall",
-				"-Wextra",
-				"-Wfloat-equal",
-				"-Wpointer-arith",
-				"-Wcast-align",
-				"-Wredundant-decls",
-				"-Winit-self",
-				"-Wswitch-default",
-				"-Wstrict-overflow=5",
-				"-Wconversion",
+
                 // C++ flags
                 "-fno-rtti",
-				"-fno-exceptions",
+                "-fexceptions",
+
                 // Linker flags
-				"-T${workspaceFolder}/arch/amd64/linker.ld",
+                "-T${workspaceFolder}/Architecture/amd64/linker.ld",
                 "-Wl,-static,--no-dynamic-linker,-ztext",
                 "-nostdlib",
                 "-nodefaultlibs",
                 "-nolibc",
                 "-zmax-page-size=0x1000",
                 "-shared",
+
                 // Debug flags
                 "-ggdb3",
                 "-O0",
@@ -61,6 +51,7 @@
                 "-fstack-usage",
                 "-fstack-check",
                 "-fsanitize=undefined",
+
                 // VSCode flags
                 "-ffreestanding",
                 "-nostdinc",
@@ -70,19 +61,18 @@
         {
             "name": "Fennix x32 (Linux, GCC, debug)",
             "includePath": [
-				"${workspaceFolder}/include",
-				"${workspaceFolder}/include/**",
-				"${workspaceFolder}/include_std",
-				"${workspaceFolder}/include_std/**",
-				"${workspaceFolder}/arch/i386/include"
-			],
-			"forcedInclude": [
-				"${workspaceFolder}/.vscode/preinclude.h"
+                "${workspaceFolder}/include/**"
             ],
             "defines": [
+                "__debug_vscode__",
+                "KERNEL_NAME=\"Fennix\"",
+                "KERNEL_VERSION=\"1.0\"",
+                "GIT_COMMIT=\"0000000000000000000000000000000000000000\"",
+                "GIT_COMMIT_SHORT=\"0000000\"",
+                "a32",
                 "DEBUG=\"1\""
             ],
-			"compilerPath": "${workspaceFolder}/../tools/cross/bin/i386-fennix-gcc",
+            "compilerPath": "${workspaceFolder}/../tools/cross/bin/i686-elf-gcc",
             "cStandard": "c17",
             "cppStandard": "c++20",
             "intelliSenseMode": "gcc-x86",
@@ -99,30 +89,20 @@
                 "-pipe",
                 "-msoft-float",
                 "-fno-builtin",
-				"-m32",
-				"-fcoroutines",
-				// Warnings
-				"-Wall",
-				"-Wextra",
-				"-Wfloat-equal",
-				"-Wpointer-arith",
-				"-Wcast-align",
-				"-Wredundant-decls",
-				"-Winit-self",
-				"-Wswitch-default",
-				"-Wstrict-overflow=5",
-				"-Wconversion",
+
                 // C++ flags
                 "-fno-rtti",
-				"-fno-exceptions",
+                "-fexceptions",
+
                 // Linker flags
-				"-T${workspaceFolder}/arch/i386/linker.ld",
+                "-T${workspaceFolder}/Architecture/i686/linker.ld",
                 "-Wl,-static,--no-dynamic-linker,-ztext",
                 "-nostdlib",
                 "-nodefaultlibs",
                 "-nolibc",
                 "-zmax-page-size=0x1000",
                 "-shared",
+
                 // Debug flags
                 "-ggdb3",
                 "-O0",
@@ -131,65 +111,7 @@
                 "-fstack-usage",
                 "-fstack-check",
                 "-fsanitize=undefined",
-				// VSCode flags
-				"-ffreestanding",
-				"-nostdinc",
-				"-nostdinc++"
-			]
-		},
-		{
-			"name": "Fennix Aarch64 (Linux, GCC, debug)",
-			"includePath": [
-				"${workspaceFolder}/include",
-				"${workspaceFolder}/include/**",
-				"${workspaceFolder}/include_std",
-				"${workspaceFolder}/include_std/**",
-				"${workspaceFolder}/arch/aarch64/include"
-			],
-			"forcedInclude": [
-				"${workspaceFolder}/.vscode/preinclude.h"
-			],
-			"defines": [
-				"DEBUG=\"1\""
-			],
-			"compilerPath": "${workspaceFolder}/../tools/cross/bin/aarch64-fennix-gcc",
-			"cStandard": "c17",
-			"cppStandard": "c++20",
-			"intelliSenseMode": "linux-gcc-arm64",
-			"configurationProvider": "ms-vscode.makefile-tools",
-			"compilerArgs": [
-				// Compiler flags
-				"-pipe",
-				"-fno-builtin",
-				"-msoft-float",
-				"-fPIC",
-				"-Wstack-protector",
-				"-fcoroutines",
-				// Warnings
-				"-Wall",
-				"-Wextra",
-				"-Wfloat-equal",
-				"-Wpointer-arith",
-				"-Wcast-align",
-				"-Wredundant-decls",
-				"-Winit-self",
-				"-Wswitch-default",
-				"-Wstrict-overflow=5",
-				"-Wconversion",
-				// C++ flags
-				"-fno-rtti",
-				"-fno-exceptions",
-				// Linker flags
-				"-T${workspaceFolder}/arch/aarch64/linker.ld",
-				"-fPIC",
-				// Debug flags
-				"-ggdb3",
-				"-O0",
-				"-fdiagnostics-color=always",
-				"-fverbose-asm",
-				"-fstack-usage",
-				"-fstack-check",
-				"-fsanitize=undefined",
+
                 // VSCode flags
                 "-ffreestanding",
                 "-nostdinc",

Kernel/.vscode/extensions.json

@@ -0,0 +1,13 @@
+{
+    "recommendations": [
+        "ms-vscode.cpptools",
+        "wayou.vscode-todo-highlight",
+        "gruntfuggly.todo-tree",
+        "13xforever.language-x86-64-assembly",
+        "webfreak.debug",
+        "zixuanwang.linkerscript",
+        "maziac.hex-hover-converter",
+        "cschlosser.doxdocgen",
+        "streetsidesoftware.code-spell-checker"
+    ]
+}

Kernel/.vscode/launch.json

@@ -1 +0,0 @@
-../../.vscode/launch.json

Kernel/.vscode/launch.json

@@ -0,0 +1,40 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Attach to a running QEMU instance",
+            "type": "cppdbg",
+            "request": "launch",
+            "program": "${workspaceRoot}/kernel.fsys",
+            "cwd": "${workspaceRoot}",
+            "args": [],
+            "targetArchitecture": "x64",
+            "MIMode": "gdb",
+            "miDebuggerPath": "/usr/bin/gdb",
+            "miDebuggerArgs": "",
+            "externalConsole": false,
+            "additionalSOLibSearchPath": "${workspaceRoot}",
+            "customLaunchSetupCommands": [
+                {
+                    "text": "target remote localhost:1234",
+                    "description": "Connect to QEMU remote debugger"
+                }
+            ],
+            "setupCommands": [
+                {
+                    "description": "Enable pretty-printing for gdb",
+                    "text": "-enable-pretty-printing",
+                    "ignoreFailures": true
+                },
+                {
+                    "text": "set breakpoint pending on",
+                    "description": "Make breakpoint pending on future shared library load."
+                },
+                {
+                    "text": "file ${workspaceRoot}/kernel.fsys",
+                    "description": "Load binary."
+                },
+            ]
+        }
+    ]
+}

Kernel/.vscode/preinclude.h

@@ -1,14 +0,0 @@
-#undef __linux__
-#undef __WIN32__
-#undef __WIN64__
-#undef _WIN32
-#undef _WIN64
-#undef __APPLE__
-#undef __clang__
-#define __vscode__ 1
-#define __kernel__ 1
-#define KERNEL_NAME "Fennix"
-#define KERNEL_ARCH "amd64"
-#define KERNEL_VERSION "1.0"
-#define GIT_COMMIT "0000000000000000000000000000000000000000"
-#define GIT_COMMIT_SHORT "0000000"

Kernel/.vscode/settings.json

@@ -1,5 +1,5 @@
 {
-    "C_Cpp.errorSquiggles": "enabled",
+    "C_Cpp.errorSquiggles": "Enabled",
     "C_Cpp.autocompleteAddParentheses": true,
     "C_Cpp.codeAnalysis.clangTidy.enabled": true,
     "C_Cpp.clang_format_style": "Visual Studio",
@@ -14,10 +14,6 @@
         "clang-diagnostic-unknown-warning-option",
         "clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling",
         "clang-diagnostic-implicit-exception-spec-mismatch",
-        "clang-diagnostic-unknown-attributes",
-        "clang-diagnostic-user-defined-literals",
-        "clang-diagnostic-non-pod-varargs",
-        "clang-diagnostic-non-pod-varargs",
-        "clang-diagnostic-non-pod-varargs"
+        "clang-diagnostic-unknown-attributes"
     ]
 }

Kernel/.vscode/tasks.json

@@ -1 +0,0 @@
-../../.vscode/tasks.json

Kernel/Architecture/aarch64/Entry.cpp

@@ -0,0 +1,10 @@
+#include <types.h>
+
+#include <debug.h>
+#include <cpu.hpp>
+
+EXTERNC void arm64Entry(uint64_t dtb_ptr32, uint64_t x1, uint64_t x2, uint64_t x3)
+{
+    trace("Hello, World!");
+    CPU::Halt(true);
+}

Kernel/Architecture/aarch64/SystemCalls.cpp

@@ -0,0 +1,14 @@
+#include <syscalls.hpp>
+
+#include <cpu.hpp>
+
+extern "C" __attribute__((naked, used, no_stack_protector)) void SystemCallHandlerStub()
+{
+
+}
+
+extern "C" uint64_t SystemCallsHandler(SyscallsFrame *regs);
+
+void InitializeSystemCalls()
+{
+}

Kernel/Architecture/aarch64/cpu/SymmetricMultiprocessing.cpp

@@ -0,0 +1,40 @@
+#include <smp.hpp>
+
+#include <ints.hpp>
+#include <memory.hpp>
+#include <cpu.hpp>
+
+#include "../../../kernel.h"
+
+volatile bool CPUEnabled = false;
+
+#pragma GCC diagnostic ignored "-Wmissing-field-initializers"
+static __attribute__((aligned(PAGE_SIZE))) CPUData CPUs[MAX_CPU] = {0};
+
+CPUData *GetCPU(uint64_t id) { return &CPUs[id]; }
+
+CPUData *GetCurrentCPU()
+{
+    uint64_t ret = 0;
+
+    if (!CPUs[ret].IsActive)
+    {
+        error("CPU %d is not active!", ret);
+        return &CPUs[0];
+    }
+
+    if (CPUs[ret].Checksum != CPU_DATA_CHECKSUM)
+    {
+        error("CPU %d data is corrupted!", ret);
+        return &CPUs[0];
+    }
+    return &CPUs[ret];
+}
+
+namespace SMP
+{
+    void Initialize(void *madt)
+    {
+        fixme("SMP::Initialize() is not implemented!");
+    }
+}

Kernel/Architecture/aarch64/linker.ld

@@ -0,0 +1,42 @@
+ENTRY(_start)
+
+SECTIONS
+{
+    . = 0x80000;
+    _kernel_start = .;
+    .text :
+    {
+        KEEP(*(.text.boot))
+        *(.text .text.*)
+    }
+    . = ALIGN(4096);
+    _kernel_text_end = .;
+
+    .data :
+    {
+        *(.data .data.*)
+    }
+    . = ALIGN(4096);
+    _kernel_data_end = .;
+
+    .rodata :
+    {
+        *(.rodata .rodata.*)
+    }
+    . = ALIGN(4096);
+    _kernel_rodata_end = .;
+
+    .bss :
+    {
+        *(.bss .bss.*)
+    }
+    . = ALIGN(4096);
+    _kernel_end = .;
+    _bss_size = _kernel_end - _kernel_rodata_end;
+
+    /DISCARD/ :
+    {
+        *(.comment*)
+        *(.note*)
+    }
+}

Kernel/Architecture/aarch64/runtime/crt0.S

@@ -0,0 +1,17 @@
+// .section ".text.boot"
+// 
+// .global _start
+//     .org 0x80000
+// _start:
+//     ldr     x5, =_start
+//     mov     sp, x5
+//     ldr     x5, =_kernel_rodata_end
+//     ldr     w6, =_bss_size
+// 1:  cbz     w6, 2f
+//     str     xzr, [x5], #8
+//     sub     w6, w6, #1
+//     cbnz    w6, 1b
+// 2:  bl      arm64Entry
+// Halt:
+//     wfe
+//     b Halt

Kernel/Architecture/aarch64/runtime/crt1.S

@@ -0,0 +1,17 @@
+.section ".text.boot"
+
+.global _start
+    .org 0x80000
+_start:
+    ldr     x5, =_start
+    mov     sp, x5
+    ldr     x5, =_kernel_rodata_end
+    ldr     w6, =_bss_size
+1:  cbz     w6, 2f
+    str     xzr, [x5], #8
+    sub     w6, w6, #1
+    cbnz    w6, 1b
+2:  bl      arm64Entry
+Halt:
+    wfe
+    b Halt

Kernel/Architecture/aarch64/runtime/crtbegin.c

@@ -0,0 +1 @@
+// C++ constructor/destructor stuff

Kernel/Architecture/aarch64/runtime/crtend.c

@@ -0,0 +1 @@
+// C++ constructor/destructor stuff

Kernel/Architecture/aarch64/runtime/crti.S

@@ -0,0 +1,13 @@
+.section .init
+.global _init
+.type _init, @function
+_init:
+//	push %rbp
+//	movq %rsp, %rbp
+
+.section .fini
+.global _fini
+.type _fini, @function
+_fini:
+//	push %rbp
+//	movq %rsp, %rbp

Kernel/Architecture/aarch64/runtime/crtn.S

@@ -0,0 +1,7 @@
+.section .init
+//	popq %rbp
+	ret
+
+.section .fini
+//	popq %rbp
+	ret

Kernel/Architecture/amd64/AdvancedConfigurationAndPowerInterface.cpp

@@ -0,0 +1,130 @@
+#include "acpi.hpp"
+
+#include <debug.h>
+#include <io.h>
+
+#pragma GCC diagnostic ignored "-Wint-to-pointer-cast"
+
+namespace ACPI
+{
+    void *ACPI::FindTable(ACPI::ACPIHeader *ACPIHeader, char *Signature)
+    {
+        for (uint64_t t = 0; t < ((ACPIHeader->Length - sizeof(ACPI::ACPIHeader)) / (XSDTSupported ? 8 : 4)); t++)
+        {
+            // Should I be concerned about unaligned memory access?
+            ACPI::ACPIHeader *SDTHdr = nullptr;
+            if (XSDTSupported)
+                SDTHdr = (ACPI::ACPIHeader *)(*(uint64_t *)((uint64_t)ACPIHeader + sizeof(ACPI::ACPIHeader) + (t * 8)));
+            else
+                SDTHdr = (ACPI::ACPIHeader *)(*(uint32_t *)((uint64_t)ACPIHeader + sizeof(ACPI::ACPIHeader) + (t * 4)));
+
+            for (uint64_t i = 0; i < 4; i++)
+            {
+                if (SDTHdr->Signature[i] != Signature[i])
+                    break;
+                if (i == 3)
+                {
+                    trace("%s found!", Signature);
+                    return SDTHdr;
+                }
+            }
+        }
+        // warn("%s not found!", Signature);
+        return nullptr;
+    }
+
+    void ACPI::SearchTables(ACPIHeader *Header)
+    {
+        if (!Header)
+            return;
+
+        HPET = (HPETHeader *)FindTable(XSDT, (char *)"HPET");
+        FADT = (FADTHeader *)FindTable(XSDT, (char *)"FACP");
+        MCFG = (MCFGHeader *)FindTable(XSDT, (char *)"MCFG");
+        BGRT = (BGRTHeader *)FindTable(XSDT, (char *)"BGRT");
+        SRAT = (SRATHeader *)FindTable(XSDT, (char *)"SRAT");
+        TPM2 = (TPM2Header *)FindTable(XSDT, (char *)"TPM2");
+        TCPA = (TCPAHeader *)FindTable(XSDT, (char *)"TCPA");
+        WAET = (WAETHeader *)FindTable(XSDT, (char *)"WAET");
+        MADT = (MADTHeader *)FindTable(XSDT, (char *)"APIC");
+        HEST = (HESTHeader *)FindTable(XSDT, (char *)"HEST");
+        FindTable(XSDT, (char *)"BERT");
+        FindTable(XSDT, (char *)"CPEP");
+        FindTable(XSDT, (char *)"DSDT");
+        FindTable(XSDT, (char *)"ECDT");
+        FindTable(XSDT, (char *)"EINJ");
+        FindTable(XSDT, (char *)"ERST");
+        FindTable(XSDT, (char *)"FACS");
+        FindTable(XSDT, (char *)"MSCT");
+        FindTable(XSDT, (char *)"MPST");
+        FindTable(XSDT, (char *)"OEMx");
+        FindTable(XSDT, (char *)"PMTT");
+        FindTable(XSDT, (char *)"PSDT");
+        FindTable(XSDT, (char *)"RASF");
+        FindTable(XSDT, (char *)"RSDT");
+        FindTable(XSDT, (char *)"SBST");
+        FindTable(XSDT, (char *)"SLIT");
+        FindTable(XSDT, (char *)"SSDT");
+        FindTable(XSDT, (char *)"XSDT");
+        FindTable(XSDT, (char *)"DRTM");
+        FindTable(XSDT, (char *)"FPDT");
+        FindTable(XSDT, (char *)"GTDT");
+        FindTable(XSDT, (char *)"PCCT");
+        FindTable(XSDT, (char *)"S3PT");
+        FindTable(XSDT, (char *)"MATR");
+        FindTable(XSDT, (char *)"MSDM");
+        FindTable(XSDT, (char *)"WPBT");
+        FindTable(XSDT, (char *)"OSDT");
+        FindTable(XSDT, (char *)"RSDP");
+        FindTable(XSDT, (char *)"NFIT");
+        FindTable(XSDT, (char *)"ASF!");
+        FindTable(XSDT, (char *)"BOOT");
+        FindTable(XSDT, (char *)"CSRT");
+        FindTable(XSDT, (char *)"DBG2");
+        FindTable(XSDT, (char *)"DBGP");
+        FindTable(XSDT, (char *)"DMAR");
+        FindTable(XSDT, (char *)"IBFT");
+        FindTable(XSDT, (char *)"IORT");
+        FindTable(XSDT, (char *)"IVRS");
+        FindTable(XSDT, (char *)"LPIT");
+        FindTable(XSDT, (char *)"MCHI");
+        FindTable(XSDT, (char *)"MTMR");
+        FindTable(XSDT, (char *)"SLIC");
+        FindTable(XSDT, (char *)"SPCR");
+        FindTable(XSDT, (char *)"SPMI");
+        FindTable(XSDT, (char *)"UEFI");
+        FindTable(XSDT, (char *)"VRTC");
+        FindTable(XSDT, (char *)"WDAT");
+        FindTable(XSDT, (char *)"WDDT");
+        FindTable(XSDT, (char *)"WDRT");
+    }
+
+    ACPI::ACPI(BootInfo *Info)
+    {
+        trace("Initializing ACPI");
+        if (Info->RSDP->Revision >= 2 && Info->RSDP->XSDTAddress)
+        {
+            debug("XSDT supported");
+            XSDTSupported = true;
+            XSDT = (ACPIHeader *)(Info->RSDP->XSDTAddress);
+        }
+        else
+        {
+            debug("RSDT supported");
+            XSDT = (ACPIHeader *)(uintptr_t)Info->RSDP->RSDTAddress;
+        }
+
+        this->SearchTables(XSDT);
+
+        if (FADT)
+        {
+            outb(FADT->SMI_CommandPort, FADT->AcpiEnable);
+            while (!(inw(FADT->PM1aControlBlock) & 1))
+                ;
+        }
+    }
+
+    ACPI::~ACPI()
+    {
+    }
+}

Kernel/Architecture/amd64/Bootstrap/Limine.c

@@ -0,0 +1,257 @@
+#include <boot/binfo.h>
+#include <types.h>
+#include <debug.h>
+#include <convert.h>
+
+#include "../../../../tools/limine/limine.h"
+#include "../../../kernel.h"
+
+void init_limine();
+
+static volatile struct limine_entry_point_request EntryPointRequest = {
+    .id = LIMINE_ENTRY_POINT_REQUEST,
+    .revision = 0,
+    .response = NULL,
+    .entry = init_limine};
+static volatile struct limine_bootloader_info_request BootloaderInfoRequest = {
+    .id = LIMINE_BOOTLOADER_INFO_REQUEST,
+    .revision = 0};
+static volatile struct limine_terminal_request TerminalRequest = {
+    .id = LIMINE_TERMINAL_REQUEST,
+    .revision = 0};
+static volatile struct limine_framebuffer_request FramebufferRequest = {
+    .id = LIMINE_FRAMEBUFFER_REQUEST,
+    .revision = 0};
+static volatile struct limine_memmap_request MemmapRequest = {
+    .id = LIMINE_MEMMAP_REQUEST,
+    .revision = 0};
+static volatile struct limine_kernel_address_request KernelAddressRequest = {
+    .id = LIMINE_KERNEL_ADDRESS_REQUEST,
+    .revision = 0};
+static volatile struct limine_rsdp_request RsdpRequest = {
+    .id = LIMINE_RSDP_REQUEST,
+    .revision = 0};
+static volatile struct limine_kernel_file_request KernelFileRequest = {
+    .id = LIMINE_KERNEL_FILE_REQUEST,
+    .revision = 0};
+static volatile struct limine_module_request ModuleRequest = {
+    .id = LIMINE_MODULE_REQUEST,
+    .revision = 0};
+
+static volatile struct limine_smbios_request SmbiosRequest = {
+    .id = LIMINE_SMBIOS_REQUEST,
+    .revision = 0};
+
+SafeFunction NIF void init_limine()
+{
+    struct BootInfo binfo;
+    struct limine_bootloader_info_response *BootloaderInfoResponse = BootloaderInfoRequest.response;
+    info("Bootloader: %s %s", BootloaderInfoResponse->name, BootloaderInfoResponse->version);
+
+    struct limine_terminal_response *TerminalResponse = TerminalRequest.response;
+
+    if (TerminalResponse == NULL || TerminalResponse->terminal_count < 1)
+    {
+        warn("No terminal available.");
+        while (1)
+            asmv("hlt");
+    }
+    TerminalResponse->write(TerminalResponse->terminals[0], "\033[37mPlease wait... ", 20);
+
+    struct limine_framebuffer_response *FrameBufferResponse = FramebufferRequest.response;
+    struct limine_memmap_response *MemmapResponse = MemmapRequest.response;
+    struct limine_kernel_address_response *KernelAddressResponse = KernelAddressRequest.response;
+    struct limine_rsdp_response *RsdpResponse = RsdpRequest.response;
+    struct limine_kernel_file_response *KernelFileResponse = KernelFileRequest.response;
+    struct limine_module_response *ModuleResponse = ModuleRequest.response;
+    struct limine_smbios_response *SmbiosResponse = SmbiosRequest.response;
+
+    if (FrameBufferResponse == NULL || FrameBufferResponse->framebuffer_count < 1)
+    {
+        error("No framebuffer available [%p;%ld]", FrameBufferResponse,
+              (FrameBufferResponse == NULL) ? 0 : FrameBufferResponse->framebuffer_count);
+        TerminalResponse->write(TerminalResponse->terminals[0], "No framebuffer available", 24);
+        while (1)
+            asmv("hlt");
+    }
+
+    if (MemmapResponse == NULL || MemmapResponse->entry_count < 1)
+    {
+        error("No memory map available [%p;%ld]", MemmapResponse,
+              (MemmapResponse == NULL) ? 0 : MemmapResponse->entry_count);
+        TerminalResponse->write(TerminalResponse->terminals[0], "No memory map available", 23);
+        while (1)
+            asmv("hlt");
+    }
+
+    if (KernelAddressResponse == NULL)
+    {
+        error("No kernel address available [%p]", KernelAddressResponse);
+        TerminalResponse->write(TerminalResponse->terminals[0], "No kernel address available", 27);
+        while (1)
+            asmv("hlt");
+    }
+
+    if (RsdpResponse == NULL || RsdpResponse->address == 0)
+    {
+        error("No RSDP address available [%p;%p]", RsdpResponse,
+              (RsdpResponse == NULL) ? 0 : RsdpResponse->address);
+        TerminalResponse->write(TerminalResponse->terminals[0], "No RSDP address available", 25);
+        while (1)
+            asmv("hlt");
+    }
+
+    if (KernelFileResponse == NULL || KernelFileResponse->kernel_file == NULL)
+    {
+        error("No kernel file available [%p;%p]", KernelFileResponse,
+              (KernelFileResponse == NULL) ? 0 : KernelFileResponse->kernel_file);
+        TerminalResponse->write(TerminalResponse->terminals[0], "No kernel file available", 24);
+        while (1)
+            asmv("hlt");
+    }
+
+    if (ModuleResponse == NULL || ModuleResponse->module_count < 1)
+    {
+        error("No module information available [%p;%ld]", ModuleResponse,
+              (ModuleResponse == NULL) ? 0 : ModuleResponse->module_count);
+        TerminalResponse->write(TerminalResponse->terminals[0], "No module information available", 31);
+        while (1)
+            asmv("hlt");
+    }
+
+    for (uint64_t i = 0; i < FrameBufferResponse->framebuffer_count; i++)
+    {
+        struct limine_framebuffer *framebuffer = FrameBufferResponse->framebuffers[i];
+        binfo.Framebuffer[i].BaseAddress = (void *)((uint64_t)framebuffer->address - 0xffff800000000000);
+        binfo.Framebuffer[i].Width = framebuffer->width;
+        binfo.Framebuffer[i].Height = framebuffer->height;
+        binfo.Framebuffer[i].Pitch = framebuffer->pitch;
+        binfo.Framebuffer[i].BitsPerPixel = framebuffer->bpp;
+        binfo.Framebuffer[i].MemoryModel = framebuffer->memory_model;
+        binfo.Framebuffer[i].RedMaskSize = framebuffer->red_mask_size;
+        binfo.Framebuffer[i].RedMaskShift = framebuffer->red_mask_shift;
+        binfo.Framebuffer[i].GreenMaskSize = framebuffer->green_mask_size;
+        binfo.Framebuffer[i].GreenMaskShift = framebuffer->green_mask_shift;
+        binfo.Framebuffer[i].BlueMaskSize = framebuffer->blue_mask_size;
+        binfo.Framebuffer[i].BlueMaskShift = framebuffer->blue_mask_shift;
+        binfo.Framebuffer[i].ExtendedDisplayIdentificationData = framebuffer->edid;
+        binfo.Framebuffer[i].EDIDSize = framebuffer->edid_size;
+        debug("Framebuffer %d: %dx%d %d bpp", i, framebuffer->width, framebuffer->height, framebuffer->bpp);
+        debug("More info:\nAddress: %p\nPitch: %ld\nMemoryModel: %d\nRedMaskSize: %d\nRedMaskShift: %d\nGreenMaskSize: %d\nGreenMaskShift: %d\nBlueMaskSize: %d\nBlueMaskShift: %d\nEDID: %p\nEDIDSize: %d",
+              (uint64_t)framebuffer->address - 0xffff800000000000, framebuffer->pitch, framebuffer->memory_model, framebuffer->red_mask_size, framebuffer->red_mask_shift, framebuffer->green_mask_size, framebuffer->green_mask_shift, framebuffer->blue_mask_size, framebuffer->blue_mask_shift, framebuffer->edid, framebuffer->edid_size);
+    }
+
+    binfo.Memory.Entries = MemmapResponse->entry_count;
+    for (uint64_t i = 0; i < MemmapResponse->entry_count; i++)
+    {
+        if (MemmapResponse->entry_count > MAX_MEMORY_ENTRIES)
+        {
+            warn("Too many memory entries, skipping the rest...");
+            break;
+        }
+
+        struct limine_memmap_entry *entry = MemmapResponse->entries[i];
+        binfo.Memory.Size += entry->length;
+        switch (entry->type)
+        {
+        case LIMINE_MEMMAP_USABLE:
+            binfo.Memory.Entry[i].BaseAddress = (void *)entry->base;
+            binfo.Memory.Entry[i].Length = entry->length;
+            binfo.Memory.Entry[i].Type = Usable;
+            break;
+        case LIMINE_MEMMAP_RESERVED:
+            binfo.Memory.Entry[i].BaseAddress = (void *)entry->base;
+            binfo.Memory.Entry[i].Length = entry->length;
+            binfo.Memory.Entry[i].Type = Reserved;
+            break;
+        case LIMINE_MEMMAP_ACPI_RECLAIMABLE:
+            binfo.Memory.Entry[i].BaseAddress = (void *)entry->base;
+            binfo.Memory.Entry[i].Length = entry->length;
+            binfo.Memory.Entry[i].Type = ACPIReclaimable;
+            break;
+        case LIMINE_MEMMAP_ACPI_NVS:
+            binfo.Memory.Entry[i].BaseAddress = (void *)entry->base;
+            binfo.Memory.Entry[i].Length = entry->length;
+            binfo.Memory.Entry[i].Type = ACPINVS;
+            break;
+        case LIMINE_MEMMAP_BAD_MEMORY:
+            binfo.Memory.Entry[i].BaseAddress = (void *)entry->base;
+            binfo.Memory.Entry[i].Length = entry->length;
+            binfo.Memory.Entry[i].Type = BadMemory;
+            break;
+        case LIMINE_MEMMAP_BOOTLOADER_RECLAIMABLE:
+            binfo.Memory.Entry[i].BaseAddress = (void *)entry->base;
+            binfo.Memory.Entry[i].Length = entry->length;
+            binfo.Memory.Entry[i].Type = BootloaderReclaimable;
+            break;
+        case LIMINE_MEMMAP_KERNEL_AND_MODULES:
+            binfo.Memory.Entry[i].BaseAddress = (void *)entry->base;
+            binfo.Memory.Entry[i].Length = entry->length;
+            binfo.Memory.Entry[i].Type = KernelAndModules;
+            break;
+        case LIMINE_MEMMAP_FRAMEBUFFER:
+            binfo.Memory.Entry[i].BaseAddress = (void *)entry->base;
+            binfo.Memory.Entry[i].Length = entry->length;
+            binfo.Memory.Entry[i].Type = Framebuffer;
+            break;
+        default:
+            binfo.Memory.Entry[i].BaseAddress = (void *)entry->base;
+            binfo.Memory.Entry[i].Length = entry->length;
+            binfo.Memory.Entry[i].Type = Unknown;
+            break;
+        }
+    }
+
+    for (uint64_t i = 0; i < ModuleResponse->module_count; i++)
+    {
+        if (i > MAX_MODULES)
+        {
+            warn("Too many modules, skipping the rest...");
+            break;
+        }
+
+        binfo.Modules[i].Address = (void *)((uint64_t)ModuleResponse->modules[i]->address - 0xffff800000000000);
+        strncpy(binfo.Modules[i].Path,
+                ModuleResponse->modules[i]->path,
+                strlen(ModuleResponse->modules[i]->path) + 1);
+        strncpy(binfo.Modules[i].CommandLine,
+                ModuleResponse->modules[i]->cmdline,
+                strlen(ModuleResponse->modules[i]->cmdline) + 1);
+        binfo.Modules[i].Size = ModuleResponse->modules[i]->size;
+        debug("Module %d:\nAddress: %p\nPath: %s\nCommand Line: %s\nSize: %ld", i,
+              (uint64_t)ModuleResponse->modules[i]->address - 0xffff800000000000, ModuleResponse->modules[i]->path,
+              ModuleResponse->modules[i]->cmdline, ModuleResponse->modules[i]->size);
+    }
+
+    binfo.RSDP = (struct RSDPInfo *)((uint64_t)RsdpResponse->address - 0xffff800000000000);
+    trace("RSDP: %p(%p) [Signature: %.8s] [OEM: %.6s]",
+          RsdpResponse->address, binfo.RSDP, binfo.RSDP->Signature, binfo.RSDP->OEMID);
+
+    debug("SMBIOS: %p %p", SmbiosResponse->entry_32, SmbiosResponse->entry_64);
+    if (SmbiosResponse->entry_32 != NULL)
+        binfo.SMBIOSPtr = (void *)((uint64_t)SmbiosResponse->entry_32 - 0xffff800000000000);
+    else if (SmbiosResponse->entry_64 != NULL)
+        binfo.SMBIOSPtr = (void *)((uint64_t)SmbiosResponse->entry_64 - 0xffff800000000000);
+    else
+        binfo.SMBIOSPtr = NULL;
+
+    binfo.Kernel.PhysicalBase = (void *)KernelAddressResponse->physical_base;
+    binfo.Kernel.VirtualBase = (void *)KernelAddressResponse->virtual_base;
+    binfo.Kernel.FileBase = KernelFileResponse->kernel_file->address;
+    strncpy(binfo.Kernel.CommandLine,
+            KernelFileResponse->kernel_file->cmdline,
+            strlen(KernelFileResponse->kernel_file->cmdline) + 1);
+    binfo.Kernel.Size = KernelFileResponse->kernel_file->size;
+    trace("Kernel physical address: %p", KernelAddressResponse->physical_base);
+    trace("Kernel virtual address: %p", KernelAddressResponse->virtual_base);
+
+    strncpy(binfo.Bootloader.Name,
+            BootloaderInfoResponse->name,
+            strlen(BootloaderInfoResponse->name) + 1);
+    strncpy(binfo.Bootloader.Version,
+            BootloaderInfoResponse->version,
+            strlen(BootloaderInfoResponse->version) + 1);
+
+    // Call kernel entry point
+    Entry(&binfo);
+}

Kernel/Architecture/amd64/Bootstrap/Multiboot2/Detection.asm

@@ -0,0 +1,41 @@
+[bits 32]
+section .bootstrap.text
+global DetectCPUID
+DetectCPUID:
+    pushfd
+    pop eax
+    mov ecx, eax
+    xor eax, 1 << 21
+    push eax
+    popfd
+    pushfd
+    pop eax
+    push ecx
+    popfd
+    xor eax, ecx
+    jz .NoCPUID
+    ret
+.NoCPUID:
+    ; mov word [0xb8F00], 0xF00F ; .
+.Loop:
+    cli
+    hlt
+    jmp .Loop
+
+global Detect64Bit
+Detect64Bit:
+    mov eax, 0x80000000
+    cpuid
+    cmp eax, 0x80000001
+    jb .NoLongMode
+    mov eax, 0x80000001
+    cpuid
+    test edx, 1 << 29
+    jz .NoLongMode
+    ret
+.NoLongMode:
+    ; mov word [0xb8F00], 0xF00A ; .
+.Loop:
+    cli
+    hlt
+    jmp .Loop

Kernel/Architecture/amd64/Bootstrap/Multiboot2/Entry.asm

@@ -0,0 +1,152 @@
+; https://wiki.osdev.org/Creating_a_64-bit_kernel
+; https://wiki.osdev.org/Entering_Long_Mode_Directly
+
+KERNEL_VIRTUAL_BASE equ 0xFFFFFFFF80000000 ; 512GB
+KERNEL_LMA equ 0x1000000 ; 16MB
+KERNEL_STACK_SIZE equ 0x4000 ; 16KB
+
+extern Multiboot2Entry
+extern BootPageTable
+extern UpdatePageTable
+extern UpdatePageTable64
+extern DetectCPUID
+extern Detect64Bit
+extern LoadGDT32
+global MB2_start
+extern MB2_start_c
+
+[bits 32]
+
+section .bootstrap.data
+global MB2_HeaderMagic
+MB2_HeaderMagic:
+    times (0x64) dq 0
+
+global MB2_HeaderInfo
+MB2_HeaderInfo:
+	times (0x64) dq 0
+
+section .bootstrap.text
+MB2_start:
+	cli
+	; mov word [0xb8F00], 0x072E ; .
+    mov [MB2_HeaderMagic], eax
+    mov [MB2_HeaderInfo], ebx
+
+	; We need to check if the CPU supports 64-bit mode
+	call DetectCPUID
+	call Detect64Bit
+
+	; mov word [0xb8F02], 0x072E ; .
+
+	mov ecx, cr0
+	and ecx, 0x7fffffff ; Clear PG
+	mov cr0, ecx
+
+	mov ecx, cr4
+	or ecx, 0x10 ; Set PSE
+	or ecx, 0x20 ; Set PAE
+	mov cr4, ecx
+
+	; Load the GDT and update the page table
+	call LoadGDT32
+	call UpdatePageTable
+
+	; Load the new page table
+	mov edi, BootPageTable
+	mov cr3, edi
+
+	; mov word [0xb8F04], 0x072E ; .
+
+	; Enable long mode
+	mov ecx, 0xC0000080 ; EFER
+	rdmsr
+	or eax, 0x800 | 0x100 | 0x1 ; Set LME, LMA, SCE
+	wrmsr
+
+	mov ecx, cr0
+	or ecx, (0x80000000 | 0x1) ; Set PG and PE
+	mov cr0, ecx
+
+
+	lgdt [GDT64.Ptr]
+    ; xor eax, eax
+    ; sgdt [eax]
+    ; test eax, eax
+    ; jz .InvalidGDT
+
+	; .InvalidGDT:
+	; 	mov word [0xb8F07], 0x4 ; Red
+	; 	hlt
+
+	jmp GDT64.code:HigherHalfStart
+
+[bits 64]
+HigherHalfStart:
+	cli
+	; mov word [0xb8F06], 0x072E ; .
+	call UpdatePageTable64
+
+	; Load the new page table
+	mov rdi, BootPageTable
+	mov cr3, rdi
+
+	mov ax, GDT64.data
+	mov ds, ax
+	mov es, ax
+	mov fs, ax
+	mov gs, ax
+	mov ss, ax
+
+	; mov word [0xb8F08], 0x072E ; .
+	mov rsp, (KernelStack + KERNEL_STACK_SIZE)
+	mov rbp, (KernelStack + KERNEL_STACK_SIZE)
+
+	cld
+	cli
+
+	call Multiboot2Entry
+	.Loop:
+		hlt
+		jmp .Loop
+
+section .bootstrap.bss
+align 16
+KernelStack: 
+	resb KERNEL_STACK_SIZE
+
+; Access bits
+PRESENT equ 1 << 7
+NOT_SYS equ 1 << 4
+EXEC equ 1 << 3
+DC equ 1 << 2
+RW equ 1 << 1
+ACCESSED equ 1 << 0
+ 
+; Flags bits
+GRAN_4K equ 1 << 7
+SZ_32 equ 1 << 6
+LONG_MODE equ 1 << 5
+
+section .bootstrap.data
+GDT64:
+    .null: equ $ - GDT64
+        dq 0
+    .code: equ $ - GDT64
+        dd 0xFFFF
+        db 0
+        db PRESENT | NOT_SYS | EXEC | RW
+        db GRAN_4K | LONG_MODE | 0xF
+        db 0
+    .data: equ $ - GDT64
+        dd 0xFFFF
+        db 0
+        db PRESENT | NOT_SYS | RW
+        db GRAN_4K | SZ_32 | 0xF
+        db 0
+    .tss: equ $ - GDT64
+        dd 0x00000068
+        dd 0x00CF8900
+	.Ptr:
+		dw $ - GDT64 - 1
+		dq GDT64

Kernel/Architecture/amd64/Bootstrap/Multiboot2/GDT32.asm

@@ -0,0 +1,47 @@
+[bits 32]
+section .bootstrap.text
+
+align 32
+global gdtr
+gdtr:
+    dw GDT32_END - GDT32 - 1
+    dd GDT32
+
+align 32
+GDT32:
+    dq 0x0
+
+    dw 0xffff
+    dw 0x0000
+    db 0x00
+    dw 0xcf9a
+    db 0x00
+
+    dw 0xffff
+    dw 0x0000
+    db 0x00
+    dw 0xcf92
+    db 0x00
+
+    dw 0x0100
+    dw 0x1000
+    db 0x00
+    dw 0x4092
+    db 0x00
+GDT32_END:
+
+global LoadGDT32
+LoadGDT32:
+	lgdt [gdtr]
+
+	jmp 0x8:ActivateGDT
+	ActivateGDT:
+		mov cx, 0x10
+		mov ss, cx
+		mov ds, cx
+		mov es, cx
+		mov fs, cx
+		mov cx, 0x18
+		mov gs, cx
+
+    ret

Kernel/Architecture/amd64/Bootstrap/Multiboot2/Header.asm

@@ -0,0 +1,60 @@
+extern MB2_start
+
+[bits 32]
+section .multiboot2
+align 4096
+HEADER_START:
+    dd 0xE85250D6
+    dd 0
+    dd (HEADER_END - HEADER_START)
+    dd 0x100000000 - (HEADER_END - HEADER_START) - 0 - 0xE85250D6
+align 8
+MB2_INFO_REQUEST_TAG_START:
+    dw 1
+    dw 0
+    dd MB2_INFO_REQUEST_TAG_END - MB2_INFO_REQUEST_TAG_START
+    dd 1 ; Command Line
+    dd 2 ; Boot Loader Name
+    dd 3 ; Module
+    dd 4 ; Basic Memory Information
+    dd 5 ; BIOS Boot Device
+    dd 6 ; Memory Map
+    dd 7 ; VBE
+    dd 8 ; Framebuffer
+    dd 9 ; ELF Sections
+    dd 10 ; APM Table
+    dd 11 ; EFI 32-bit System Table Pointer
+    dd 12 ; EFI 64-bit System Table Pointer
+    ; dd 13 ; SMBIOS
+    dd 14 ; ACPI Old
+    dd 15 ; ACPI New
+    dd 16 ; Network
+    dd 17 ; EFI Memory Map
+    dd 18 ; EFI Boot Services Notifier
+    dd 19 ; EFI 32-bit Image Handle Pointer
+    dd 20 ; EFI 64-bit Image Handle Pointer
+    dd 21 ; Load Base Address
+MB2_INFO_REQUEST_TAG_END:
+align 8
+MB2_ENTRY_TAG:        
+    dw 3
+    dw 0
+    dd MB2_ENTRY_TAG_END - MB2_ENTRY_TAG
+    dd MB2_start
+MB2_ENTRY_TAG_END:
+align 8
+MB2_FRAMEBUFFER_TAG_START:
+    dw 5
+    dw 1
+    dd MB2_FRAMEBUFFER_TAG_END - MB2_FRAMEBUFFER_TAG_START
+    dd 1280 ; Width
+    dd 720 ; Height
+    dd 32 ; Depth
+MB2_FRAMEBUFFER_TAG_END:
+align 8
+MB2_TAG_START:
+    dw 0
+    dw 0
+    dd MB2_TAG_END - MB2_TAG_START
+MB2_TAG_END:
+HEADER_END:

Kernel/Architecture/amd64/Bootstrap/Multiboot2/MB2MemoryMapper.cpp

@@ -0,0 +1,285 @@
+#include <types.h>
+
+union __attribute__((packed)) PageTableEntry
+{
+    struct
+    {
+        bool Present : 1;            // 0
+        bool ReadWrite : 1;          // 1
+        bool UserSupervisor : 1;     // 2
+        bool WriteThrough : 1;       // 3
+        bool CacheDisable : 1;       // 4
+        bool Accessed : 1;           // 5
+        bool Dirty : 1;              // 6
+        bool PageAttributeTable : 1; // 7
+        bool Global : 1;             // 8
+        uint8_t Available0 : 3;      // 9-11
+        uint64_t Address : 40;       // 12-51
+        uint32_t Available1 : 7;     // 52-58
+        uint8_t ProtectionKey : 4;   // 59-62
+        bool ExecuteDisable : 1;     // 63
+    };
+    uint64_t raw;
+
+    __always_inline inline SafeFunction NIF void SetAddress(uintptr_t _Address)
+    {
+        _Address &= 0x000000FFFFFFFFFF;
+        this->raw &= 0xFFF0000000000FFF;
+        this->raw |= (_Address << 12);
+    }
+
+    __always_inline inline SafeFunction NIF uintptr_t GetAddress() { return (this->raw & 0x000FFFFFFFFFF000) >> 12; }
+};
+
+struct __attribute__((packed)) PageTableEntryPtr
+{
+    PageTableEntry Entries[511];
+};
+
+union __attribute__((packed)) PageDirectoryEntry
+{
+    struct
+    {
+        bool Present : 1;         // 0
+        bool ReadWrite : 1;       // 1
+        bool UserSupervisor : 1;  // 2
+        bool WriteThrough : 1;    // 3
+        bool CacheDisable : 1;    // 4
+        bool Accessed : 1;        // 5
+        bool Available0 : 1;      // 6
+        bool PageSize : 1;        // 7
+        uint8_t Available1 : 4;   // 8-11
+        uint64_t Address : 40;    // 12-51
+        uint32_t Available2 : 11; // 52-62
+        bool ExecuteDisable : 1;  // 63
+    };
+    uint64_t raw;
+
+    __always_inline inline SafeFunction NIF void SetAddress(uintptr_t _Address)
+    {
+        _Address &= 0x000000FFFFFFFFFF;
+        this->raw &= 0xFFF0000000000FFF;
+        this->raw |= (_Address << 12);
+    }
+
+    __always_inline inline SafeFunction NIF uintptr_t GetAddress() { return (this->raw & 0x000FFFFFFFFFF000) >> 12; }
+};
+
+struct __attribute__((packed)) PageDirectoryEntryPtr
+{
+    PageDirectoryEntry Entries[511];
+};
+
+union __attribute__((packed)) PageDirectoryPointerTableEntry
+{
+    struct
+    {
+        bool Present : 1;         // 0
+        bool ReadWrite : 1;       // 1
+        bool UserSupervisor : 1;  // 2
+        bool WriteThrough : 1;    // 3
+        bool CacheDisable : 1;    // 4
+        bool Accessed : 1;        // 5
+        bool Available0 : 1;      // 6
+        bool PageSize : 1;        // 7
+        uint8_t Available1 : 4;   // 8-11
+        uint64_t Address : 40;    // 12-51
+        uint32_t Available2 : 11; // 52-62
+        bool ExecuteDisable : 1;  // 63
+    };
+    uint64_t raw;
+
+    __always_inline inline SafeFunction NIF void SetAddress(uintptr_t _Address)
+    {
+        _Address &= 0x000000FFFFFFFFFF;
+        this->raw &= 0xFFF0000000000FFF;
+        this->raw |= (_Address << 12);
+    }
+
+    __always_inline inline SafeFunction NIF uintptr_t GetAddress() { return (this->raw & 0x000FFFFFFFFFF000) >> 12; }
+};
+
+struct __attribute__((packed)) PageDirectoryPointerTableEntryPtr
+{
+    PageDirectoryPointerTableEntry Entries[511];
+};
+
+union __attribute__((packed)) PageMapLevel4
+{
+    struct
+    {
+        bool Present : 1;         // 0
+        bool ReadWrite : 1;       // 1
+        bool UserSupervisor : 1;  // 2
+        bool WriteThrough : 1;    // 3
+        bool CacheDisable : 1;    // 4
+        bool Accessed : 1;        // 5
+        bool Available0 : 1;      // 6
+        bool Reserved0 : 1;       // 7
+        uint8_t Available1 : 4;   // 8-11
+        uint64_t Address : 40;    // 12-51
+        uint32_t Available2 : 11; // 52-62
+        bool ExecuteDisable : 1;  // 63
+    };
+    uint64_t raw;
+
+    __always_inline inline SafeFunction NIF void SetAddress(uintptr_t _Address)
+    {
+        _Address &= 0x000000FFFFFFFFFF;
+        this->raw &= 0xFFF0000000000FFF;
+        this->raw |= (_Address << 12);
+    }
+
+    __always_inline inline SafeFunction NIF uintptr_t GetAddress() { return (this->raw & 0x000FFFFFFFFFF000) >> 12; }
+};
+
+struct PageTable4
+{
+    PageMapLevel4 Entries[511];
+} __attribute__((aligned(0x1000)));
+
+extern "C" char BootPageTable[];
+extern uintptr_t _kernel_start, _kernel_end;
+
+__attribute__((section(".bootstrap.data"))) static PageTable4 *BPTable = (PageTable4 *)BootPageTable;
+__attribute__((section(".bootstrap.data"))) static size_t BPT_Allocated = 0x4000;
+
+__always_inline inline SafeFunction NIF void *RequestPage()
+{
+    void *Page = (void *)(BootPageTable + BPT_Allocated);
+    BPT_Allocated += 0x1000;
+    if (BPT_Allocated >= 0x10000) /* The length of BootPageTable */
+    {
+        while (true)
+            ;
+    }
+    return Page;
+}
+
+class PageMapIndexer
+{
+public:
+    uintptr_t PMLIndex = 0;
+    uintptr_t PDPTEIndex = 0;
+    uintptr_t PDEIndex = 0;
+    uintptr_t PTEIndex = 0;
+    __always_inline inline SafeFunction NIF PageMapIndexer(uintptr_t VirtualAddress)
+    {
+        uintptr_t Address = VirtualAddress;
+        Address >>= 12;
+        this->PTEIndex = Address & 0x1FF;
+        Address >>= 9;
+        this->PDEIndex = Address & 0x1FF;
+        Address >>= 9;
+        this->PDPTEIndex = Address & 0x1FF;
+        Address >>= 9;
+        this->PMLIndex = Address & 0x1FF;
+    }
+};
+
+__always_inline inline SafeFunction NIF void Map(void *VirtualAddress, void *PhysicalAddress, uint64_t Flags)
+{
+    PageMapIndexer Index = PageMapIndexer((uintptr_t)VirtualAddress);
+    // Clear any flags that are not 1 << 0 (Present) - 1 << 5 (Accessed) because rest are for page table entries only
+    uint64_t DirectoryFlags = Flags & 0x3F;
+
+    PageMapLevel4 PML4 = BPTable->Entries[Index.PMLIndex];
+    PageDirectoryPointerTableEntryPtr *PDPTEPtr = nullptr;
+    if (!PML4.Present)
+    {
+        PDPTEPtr = (PageDirectoryPointerTableEntryPtr *)RequestPage();
+        {
+            void *ptr = PDPTEPtr;
+            int value = 0;
+            size_t num = 0x1000;
+            uint8_t *p = (uint8_t *)ptr;
+            for (size_t i = 0; i < num; i++)
+                p[i] = value;
+        }
+        PML4.Present = true;
+        PML4.SetAddress((uintptr_t)PDPTEPtr >> 12);
+    }
+    else
+        PDPTEPtr = (PageDirectoryPointerTableEntryPtr *)((uintptr_t)PML4.GetAddress() << 12);
+    PML4.raw |= DirectoryFlags;
+    BPTable->Entries[Index.PMLIndex] = PML4;
+
+    PageDirectoryPointerTableEntry PDPTE = PDPTEPtr->Entries[Index.PDPTEIndex];
+    PageDirectoryEntryPtr *PDEPtr = nullptr;
+    if (!PDPTE.Present)
+    {
+        PDEPtr = (PageDirectoryEntryPtr *)RequestPage();
+        {
+            void *ptr = PDEPtr;
+            int value = 0;
+            size_t num = 0x1000;
+            uint8_t *p = (uint8_t *)ptr;
+            for (size_t i = 0; i < num; i++)
+                p[i] = value;
+        }
+        PDPTE.Present = true;
+        PDPTE.SetAddress((uintptr_t)PDEPtr >> 12);
+    }
+    else
+        PDEPtr = (PageDirectoryEntryPtr *)((uintptr_t)PDPTE.GetAddress() << 12);
+    PDPTE.raw |= DirectoryFlags;
+    PDPTEPtr->Entries[Index.PDPTEIndex] = PDPTE;
+
+    PageDirectoryEntry PDE = PDEPtr->Entries[Index.PDEIndex];
+    PageTableEntryPtr *PTEPtr = nullptr;
+    if (!PDE.Present)
+    {
+        PTEPtr = (PageTableEntryPtr *)RequestPage();
+        {
+            void *ptr = PTEPtr;
+            int value = 0;
+            size_t num = 0x1000;
+            uint8_t *p = (uint8_t *)ptr;
+            for (size_t i = 0; i < num; i++)
+                p[i] = value;
+        }
+        PDE.Present = true;
+        PDE.SetAddress((uintptr_t)PTEPtr >> 12);
+    }
+    else
+        PTEPtr = (PageTableEntryPtr *)((uintptr_t)PDE.GetAddress() << 12);
+    PDE.raw |= DirectoryFlags;
+    PDEPtr->Entries[Index.PDEIndex] = PDE;
+
+    PageTableEntry PTE = PTEPtr->Entries[Index.PTEIndex];
+    PTE.Present = true;
+    PTE.raw |= Flags;
+    PTE.SetAddress((uintptr_t)PhysicalAddress >> 12);
+    PTEPtr->Entries[Index.PTEIndex] = PTE;
+    asmv("invlpg (%0)"
+         :
+         : "r"(VirtualAddress)
+         : "memory");
+}
+
+EXTERNC __attribute__((section(".bootstrap.text"))) SafeFunction NIF __attribute__((section(".bootstrap.text"))) void UpdatePageTable64()
+{
+    /*
+    TODO: this code corrupts the page table
+    */
+
+    BPTable = (PageTable4 *)BootPageTable;
+
+    // for (size_t i = 0; i < 0x10000000; i += 0x1000)
+    //     Map((void *)i, (void *)i, 0x3);
+
+    uintptr_t KernelStart = (uintptr_t)&_kernel_start;
+    uintptr_t KernelEnd = (uintptr_t)&_kernel_end;
+    uintptr_t PhysicalStart = KernelStart - 0xFFFFFFFF80000000;
+    for (uintptr_t i = KernelStart; i < KernelEnd; i += 0x1000)
+    {
+        Map((void *)i, (void *)PhysicalStart, 0x3);
+        PhysicalStart += 0x1000;
+    }
+
+    asmv("mov %%cr3, %%rax\n"
+         "mov %%rax, %%cr3\n"
+         :
+         :
+         : "rax");
+}

Kernel/Architecture/amd64/Bootstrap/Multiboot2/Multiboot2.cpp

@@ -0,0 +1,338 @@
+#include <types.h>
+
+#include <boot/protocols/multiboot2.h>
+#include <memory.hpp>
+#include <io.h>
+
+#include "../../../../kernel.h"
+
+enum VideoType
+{
+    VIDEO_TYPE_NONE = 0x00,
+    VIDEO_TYPE_COLOUR = 0x20,
+    VIDEO_TYPE_MONOCHROME = 0x30,
+};
+
+uint16_t GetBiosAreaHardware()
+{
+    const uint16_t *BIOSDataAreaDetectedHardware = (const uint16_t *)0x410;
+    return *BIOSDataAreaDetectedHardware;
+}
+
+enum VideoType GetVideoType() { return (enum VideoType)(GetBiosAreaHardware() & 0x30); }
+
+void GetSMBIOS()
+{
+    unsigned char *SMBIOSAddress = (unsigned char *)0xF0000;
+    while ((unsigned int)(unsigned long)SMBIOSAddress < 0x100000)
+    {
+        if (SMBIOSAddress[0] == '_' &&
+            SMBIOSAddress[1] == 'S' &&
+            SMBIOSAddress[2] == 'M' &&
+            SMBIOSAddress[3] == '_')
+        {
+            unsigned char Checksum = 0;
+            int Length = SMBIOSAddress[5];
+            for (int i = 0; i < Length; i++)
+                Checksum += SMBIOSAddress[i];
+
+            if (Checksum == 0)
+                break;
+        }
+        SMBIOSAddress += 16;
+    }
+
+    if ((unsigned int)(unsigned long)SMBIOSAddress == 0x100000)
+    {
+        // No SMBIOS found
+    }
+}
+
+extern "C" unsigned int MB2_HeaderMagic;
+extern "C" unsigned long MB2_HeaderInfo;
+
+EXTERNC void Multiboot2Entry()
+{
+    unsigned long Info = MB2_HeaderInfo;
+    unsigned int Magic = MB2_HeaderMagic;
+    if (Info == NULL || Magic == NULL)
+    {
+        if (Magic == NULL)
+            error("Multiboot magic is NULL");
+        if (Info == NULL)
+            error("Multiboot info is NULL");
+        CPU::Stop();
+    }
+    else if (Magic != MULTIBOOT2_BOOTLOADER_MAGIC)
+    {
+        error("Multiboot magic is invalid (%#x != %#x)", Magic, MULTIBOOT2_BOOTLOADER_MAGIC);
+        CPU::Stop();
+    }
+
+    uint64_t div = 1193180 / 1000;
+    outb(0x43, 0xB6);
+    outb(0x42, (uint8_t)div);
+    outb(0x42, (uint8_t)(div >> 8));
+    uint8_t tmp = inb(0x61);
+    if (tmp != (tmp | 3))
+        outb(0x61, tmp | 3);
+
+    BootInfo mb2binfo;
+    uint8_t *VideoBuffer = (uint8_t *)0xB8F00;
+    int pos = 0;
+    auto InfoAddress = Info;
+    for (auto Tag = (struct multiboot_tag *)((uint8_t *)InfoAddress + 8);
+         ;
+         Tag = (struct multiboot_tag *)((multiboot_uint8_t *)Tag + ((Tag->size + 7) & ~7)))
+    {
+        VideoBuffer[pos++] = '.';
+        VideoBuffer[pos++] = 0x2;
+
+        if (Tag->type == MULTIBOOT_TAG_TYPE_END)
+        {
+            debug("End of multiboot2 tags");
+            break;
+        }
+
+        switch (Tag->type)
+        {
+        case MULTIBOOT_TAG_TYPE_CMDLINE:
+        {
+            strncpy(mb2binfo.Kernel.CommandLine,
+                    ((multiboot_tag_string *)Tag)->string,
+                    strlen(((multiboot_tag_string *)Tag)->string));
+            debug("Kernel command line: %s", mb2binfo.Kernel.CommandLine);
+            break;
+        }
+        case MULTIBOOT_TAG_TYPE_BOOT_LOADER_NAME:
+        {
+            strncpy(mb2binfo.Bootloader.Name,
+                    ((multiboot_tag_string *)Tag)->string,
+                    strlen(((multiboot_tag_string *)Tag)->string));
+            debug("Bootloader name: %s", mb2binfo.Bootloader.Name);
+            break;
+        }
+        case MULTIBOOT_TAG_TYPE_MODULE:
+        {
+            multiboot_tag_module *module = (multiboot_tag_module *)Tag;
+            static int module_count = 0;
+            mb2binfo.Modules[module_count++].Address = (void *)(uint64_t)module->mod_start;
+            mb2binfo.Modules[module_count++].Size = module->size;
+            strncpy(mb2binfo.Modules[module_count++].Path, "(null)", 6);
+            strncpy(mb2binfo.Modules[module_count++].CommandLine, module->cmdline,
+                    strlen(module->cmdline));
+            debug("Module: %s", mb2binfo.Modules[module_count++].Path);
+            break;
+        }
+        case MULTIBOOT_TAG_TYPE_BASIC_MEMINFO:
+        {
+            multiboot_tag_basic_meminfo *meminfo = (multiboot_tag_basic_meminfo *)Tag;
+            fixme("basic_meminfo->[mem_lower: %#x, mem_upper: %#x]",
+                  meminfo->mem_lower, meminfo->mem_upper);
+            break;
+        }
+        case MULTIBOOT_TAG_TYPE_BOOTDEV:
+        {
+            multiboot_tag_bootdev *bootdev = (multiboot_tag_bootdev *)Tag;
+            fixme("bootdev->[biosdev: %#x, slice: %#x, part: %#x]",
+                  bootdev->biosdev, bootdev->slice, bootdev->part);
+            break;
+        }
+        case MULTIBOOT_TAG_TYPE_MMAP:
+        {
+            multiboot_tag_mmap *mmap = (multiboot_tag_mmap *)Tag;
+            uint32_t EntryCount = mmap->size / sizeof(multiboot_mmap_entry);
+            mb2binfo.Memory.Entries = EntryCount;
+            for (uint32_t i = 0; i < EntryCount; i++)
+            {
+                if (EntryCount > MAX_MEMORY_ENTRIES)
+                {
+                    warn("Too many memory entries, skipping the rest...");
+                    break;
+                }
+                multiboot_mmap_entry entry = mmap->entries[i];
+                mb2binfo.Memory.Size += entry.len;
+                switch (entry.type)
+                {
+                case MULTIBOOT_MEMORY_AVAILABLE:
+                    mb2binfo.Memory.Entry[i].BaseAddress = (void *)entry.addr;
+                    mb2binfo.Memory.Entry[i].Length = entry.len;
+                    mb2binfo.Memory.Entry[i].Type = Usable;
+                    break;
+                case MULTIBOOT_MEMORY_RESERVED:
+                    mb2binfo.Memory.Entry[i].BaseAddress = (void *)entry.addr;
+                    mb2binfo.Memory.Entry[i].Length = entry.len;
+                    mb2binfo.Memory.Entry[i].Type = Reserved;
+                    break;
+                case MULTIBOOT_MEMORY_ACPI_RECLAIMABLE:
+                    mb2binfo.Memory.Entry[i].BaseAddress = (void *)entry.addr;
+                    mb2binfo.Memory.Entry[i].Length = entry.len;
+                    mb2binfo.Memory.Entry[i].Type = ACPIReclaimable;
+                    break;
+                case MULTIBOOT_MEMORY_NVS:
+                    mb2binfo.Memory.Entry[i].BaseAddress = (void *)entry.addr;
+                    mb2binfo.Memory.Entry[i].Length = entry.len;
+                    mb2binfo.Memory.Entry[i].Type = ACPINVS;
+                    break;
+                case MULTIBOOT_MEMORY_BADRAM:
+                    mb2binfo.Memory.Entry[i].BaseAddress = (void *)entry.addr;
+                    mb2binfo.Memory.Entry[i].Length = entry.len;
+                    mb2binfo.Memory.Entry[i].Type = BadMemory;
+                    break;
+                default:
+                    mb2binfo.Memory.Entry[i].BaseAddress = (void *)entry.addr;
+                    mb2binfo.Memory.Entry[i].Length = entry.len;
+                    mb2binfo.Memory.Entry[i].Type = Unknown;
+                    break;
+                }
+                debug("Memory entry: [BaseAddress: %#x, Length: %#x, Type: %d]",
+                      mb2binfo.Memory.Entry[i].BaseAddress,
+                      mb2binfo.Memory.Entry[i].Length,
+                      mb2binfo.Memory.Entry[i].Type);
+            }
+            break;
+        }
+        case MULTIBOOT_TAG_TYPE_VBE:
+        {
+            multiboot_tag_vbe *vbe = (multiboot_tag_vbe *)Tag;
+            fixme("vbe->[vbe_mode: %#x, vbe_interface_seg: %#x, vbe_interface_off: %#x, vbe_interface_len: %#x]",
+                  vbe->vbe_mode, vbe->vbe_interface_seg, vbe->vbe_interface_off, vbe->vbe_interface_len);
+            break;
+        }
+        case MULTIBOOT_TAG_TYPE_FRAMEBUFFER:
+        {
+            multiboot_tag_framebuffer *fb = (multiboot_tag_framebuffer *)Tag;
+            static int fb_count = 0;
+            mb2binfo.Framebuffer[fb_count].BaseAddress = (void *)fb->common.framebuffer_addr;
+            mb2binfo.Framebuffer[fb_count].Width = fb->common.framebuffer_width;
+            mb2binfo.Framebuffer[fb_count].Height = fb->common.framebuffer_height;
+            mb2binfo.Framebuffer[fb_count].Pitch = fb->common.framebuffer_pitch;
+            mb2binfo.Framebuffer[fb_count].BitsPerPixel = fb->common.framebuffer_bpp;
+            mb2binfo.Framebuffer[fb_count].MemoryModel = fb->common.framebuffer_type;
+            switch (fb->common.framebuffer_type)
+            {
+            case MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED:
+            {
+                mb2binfo.Framebuffer[fb_count].Type = Indexed;
+                break;
+            }
+            case MULTIBOOT_FRAMEBUFFER_TYPE_RGB:
+            {
+                mb2binfo.Framebuffer[fb_count].Type = RGB;
+                mb2binfo.Framebuffer[fb_count].RedMaskSize = fb->framebuffer_red_mask_size;
+                mb2binfo.Framebuffer[fb_count].RedMaskShift = fb->framebuffer_red_field_position;
+                mb2binfo.Framebuffer[fb_count].GreenMaskSize = fb->framebuffer_green_mask_size;
+                mb2binfo.Framebuffer[fb_count].GreenMaskShift = fb->framebuffer_green_field_position;
+                mb2binfo.Framebuffer[fb_count].BlueMaskSize = fb->framebuffer_blue_mask_size;
+                mb2binfo.Framebuffer[fb_count].BlueMaskShift = fb->framebuffer_blue_field_position;
+                break;
+            }
+            case MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT:
+            {
+                mb2binfo.Framebuffer[fb_count].Type = EGA;
+                break;
+            }
+            }
+            debug("Framebuffer %d: %dx%d %d bpp", fb_count, fb->common.framebuffer_width, fb->common.framebuffer_height, fb->common.framebuffer_bpp);
+            debug("More info:\nAddress: %p\nPitch: %lld\nMemoryModel: %d\nRedMaskSize: %d\nRedMaskShift: %d\nGreenMaskSize: %d\nGreenMaskShift: %d\nBlueMaskSize: %d\nBlueMaskShift: %d",
+                  fb->common.framebuffer_addr, fb->common.framebuffer_pitch, fb->common.framebuffer_type,
+                  fb->framebuffer_red_mask_size, fb->framebuffer_red_field_position, fb->framebuffer_green_mask_size,
+                  fb->framebuffer_green_field_position, fb->framebuffer_blue_mask_size, fb->framebuffer_blue_field_position);
+            fb_count++;
+            break;
+        }
+        case MULTIBOOT_TAG_TYPE_ELF_SECTIONS:
+        {
+            multiboot_tag_elf_sections *elf = (multiboot_tag_elf_sections *)Tag;
+            fixme("elf_sections->[sections=%#lx num=%d, size=%d, entsize=%d, shndx=%d]",
+                  &elf->sections, elf->num, elf->size, elf->entsize, elf->shndx);
+            break;
+        }
+        case MULTIBOOT_TAG_TYPE_APM:
+        {
+            multiboot_tag_apm *apm = (multiboot_tag_apm *)Tag;
+            fixme("apm->[version: %d, cseg: %d, offset: %d, cseg_16: %d, dseg: %d, flags: %d, cseg_len: %d, cseg_16_len: %d, dseg_len: %d]",
+                  apm->version, apm->cseg, apm->offset, apm->cseg_16, apm->dseg, apm->flags, apm->cseg_len, apm->cseg_16_len, apm->dseg_len);
+            break;
+        }
+        case MULTIBOOT_TAG_TYPE_EFI32:
+        {
+            multiboot_tag_efi32 *efi32 = (multiboot_tag_efi32 *)Tag;
+            fixme("efi32->[pointer: %p, size: %d]", efi32->pointer, efi32->size);
+            break;
+        }
+        case MULTIBOOT_TAG_TYPE_EFI64:
+        {
+            multiboot_tag_efi64 *efi64 = (multiboot_tag_efi64 *)Tag;
+            fixme("efi64->[pointer: %p, size: %d]", efi64->pointer, efi64->size);
+            break;
+        }
+        case MULTIBOOT_TAG_TYPE_SMBIOS:
+        {
+            multiboot_tag_smbios *smbios = (multiboot_tag_smbios *)Tag;
+            fixme("smbios->[major: %d, minor: %d]", smbios->major, smbios->minor);
+            break;
+        }
+        case MULTIBOOT_TAG_TYPE_ACPI_OLD:
+        {
+            mb2binfo.RSDP = (BootInfo::RSDPInfo *)((multiboot_tag_old_acpi *)Tag)->rsdp;
+            debug("OLD ACPI RSDP: %p", mb2binfo.RSDP);
+            break;
+        }
+        case MULTIBOOT_TAG_TYPE_ACPI_NEW:
+        {
+            mb2binfo.RSDP = (BootInfo::RSDPInfo *)((multiboot_tag_new_acpi *)Tag)->rsdp;
+            debug("NEW ACPI RSDP: %p", mb2binfo.RSDP);
+            break;
+        }
+        case MULTIBOOT_TAG_TYPE_NETWORK:
+        {
+            multiboot_tag_network *net = (multiboot_tag_network *)Tag;
+            fixme("network->[dhcpack: %p]", net->dhcpack);
+            break;
+        }
+        case MULTIBOOT_TAG_TYPE_EFI_MMAP:
+        {
+            multiboot_tag_efi_mmap *efi_mmap = (multiboot_tag_efi_mmap *)Tag;
+            fixme("efi_mmap->[descr_size: %d, descr_vers: %d, efi_mmap: %p]",
+                  efi_mmap->descr_size, efi_mmap->descr_vers, efi_mmap->efi_mmap);
+            break;
+        }
+        case MULTIBOOT_TAG_TYPE_EFI_BS:
+        {
+            fixme("efi_bs->[%p] (unknown structure)", Tag);
+            break;
+        }
+        case MULTIBOOT_TAG_TYPE_EFI32_IH:
+        {
+            multiboot_tag_efi32_ih *efi32_ih = (multiboot_tag_efi32_ih *)Tag;
+            fixme("efi32_ih->[pointer: %p]", efi32_ih->pointer);
+            break;
+        }
+        case MULTIBOOT_TAG_TYPE_EFI64_IH:
+        {
+            multiboot_tag_efi64_ih *efi64_ih = (multiboot_tag_efi64_ih *)Tag;
+            fixme("efi64_ih->[pointer: %p]", efi64_ih->pointer);
+            break;
+        }
+        case MULTIBOOT_TAG_TYPE_LOAD_BASE_ADDR:
+        {
+            multiboot_tag_load_base_addr *load_base_addr = (multiboot_tag_load_base_addr *)Tag;
+            mb2binfo.Kernel.PhysicalBase = (void *)(uint64_t)load_base_addr->load_base_addr;
+            mb2binfo.Kernel.VirtualBase = (void *)(uint64_t)(load_base_addr->load_base_addr + 0xFFFFFFFF80000000);
+            debug("Kernel base: %p (physical) %p (virtual)", mb2binfo.Kernel.PhysicalBase, mb2binfo.Kernel.VirtualBase);
+            break;
+        }
+        default:
+        {
+            error("Unknown multiboot2 tag type: %d", Tag->type);
+            break;
+        }
+        }
+    }
+
+    tmp = inb(0x61) & 0xFC;
+    outb(0x61, tmp);
+
+    Entry(&mb2binfo);
+}

Kernel/Architecture/amd64/Bootstrap/Multiboot2/PageTable.asm

@@ -0,0 +1,45 @@
+PAGE_TABLE_SIZE equ 0x8 ; 2GB
+[bits 32]
+
+section .bootstrap.bss
+align 0x1000
+global BootPageTable
+BootPageTable:
+    times (0x10000) dq 0 ; 0x4000
+
+section .bootstrap.text
+global UpdatePageTable
+UpdatePageTable:
+	mov edi, (BootPageTable + 0x0000) ; First PML4E
+	mov eax, (BootPageTable + 0x1000) ; First PDPTE
+	or eax, 11b ; Bitwise OR on rax (PDPTE) with 11b (Present, Write)
+	mov dword [edi], eax ; Write 11b to PML4E
+
+	mov edi, (BootPageTable + 0x1000) ; First PDPTE
+	mov eax, (BootPageTable + 0x2000) ; First PDE
+	or eax, 11b ; Bitwise OR on rax (PDE) with 11b (Present, Write)
+
+	mov ecx, PAGE_TABLE_SIZE ; For loop instruction
+	mov ebx, 0x0 ; Value to store in the next 4 bytes
+	.FillPageTableLevel3:
+		mov dword [edi], eax ; Store modified PDE in PDPTE
+		mov dword [edi + 4], ebx ; Store the rbx value in the next 4 bytes
+		add eax, 0x1000 ; Increment (page size)
+		adc ebx, 0 ; Add 0 to carry flag
+		add edi, 8 ; Add 8 to rdi (next PDE)
+		loop .FillPageTableLevel3 ; Loop until rcx is 0
+
+	mov edi, (BootPageTable + 0x2000) ; First PDE
+	mov eax, 11b | 10000000b ; Present, Write, Large Page
+
+	mov ecx, (512 * PAGE_TABLE_SIZE) ; For loop instruction
+	mov ebx, 0x0 ; Value to store in the next 4 bytes
+	.FillPageTableLevel2:
+		mov dword [edi], eax ; Store modified PDE in PDPTE
+		mov dword [edi + 4], ebx ; Store the rbx value in the next 4 bytes
+		add eax, 1 << 21 ; Increment (page size)
+		adc ebx, 0 ; Add 0 (carry flag) to rbx to increment if there was a carry
+		add edi, 8 ; Add 8 to rdi (next PDE)
+		loop .FillPageTableLevel2 ; Loop until rcx is 0
+
+	ret

Kernel/Architecture/amd64/DifferentiatedSystemDescriptionTable.cpp

@@ -0,0 +1,215 @@
+#include "acpi.hpp"
+
+#include <time.hpp>
+#include <debug.h>
+#include <smp.hpp>
+#include <io.h>
+
+#include "cpu/apic.hpp"
+#include "../../kernel.h"
+
+#define ACPI_TIMER 0x0001
+#define ACPI_BUSMASTER 0x0010
+#define ACPI_GLOBAL 0x0020
+#define ACPI_POWER_BUTTON 0x0100
+#define ACPI_SLEEP_BUTTON 0x0200
+#define ACPI_RTC_ALARM 0x0400
+#define ACPI_PCIE_WAKE 0x4000
+#define ACPI_WAKE 0x8000
+
+namespace ACPI
+{
+    __attribute__((always_inline)) inline bool IsCanonical(uint64_t Address)
+    {
+        return ((Address <= 0x00007FFFFFFFFFFF) || ((Address >= 0xFFFF800000000000) && (Address <= 0xFFFFFFFFFFFFFFFF)));
+    }
+
+#define ACPI_ENABLED 0x0001
+#define ACPI_SLEEP 0x2000
+
+#define ACPI_GAS_MMIO 0
+#define ACPI_GAS_IO 1
+#define ACPI_GAS_PCI 2
+
+    void DSDT::OnInterruptReceived(CPU::x64::TrapFrame *Frame)
+    {
+        debug("SCI Handle Triggered");
+        uint16_t Event = 0;
+        {
+            uint16_t a = 0, b = 0;
+            if (acpi->FADT->PM1aEventBlock)
+            {
+                a = inw(acpi->FADT->PM1aEventBlock);
+                outw(acpi->FADT->PM1aEventBlock, a);
+            }
+            if (acpi->FADT->PM1bEventBlock)
+            {
+                b = inw(acpi->FADT->PM1bEventBlock);
+                outw(acpi->FADT->PM1bEventBlock, b);
+            }
+            Event = a | b;
+        }
+
+        debug("SCI Event: %#lx", Event);
+        if (Event & ACPI_BUSMASTER)
+        {
+            fixme("ACPI Busmaster");
+        }
+        else if (Event & ACPI_GLOBAL)
+        {
+            fixme("ACPI Global");
+        }
+        else if (Event & ACPI_POWER_BUTTON)
+        {
+            BeforeShutdown();
+            this->Shutdown();
+            Time::Clock tm = Time::ReadClock();
+            while (tm.Second == Time::ReadClock().Second)
+                ;
+            outw(0xB004, 0x2000);
+            outw(0x604, 0x2000);
+            outw(0x4004, 0x3400);
+            CPU::Stop();
+        }
+        else if (Event & ACPI_SLEEP_BUTTON)
+        {
+            fixme("ACPI Sleep Button");
+        }
+        else if (Event & ACPI_RTC_ALARM)
+        {
+            fixme("ACPI RTC Alarm");
+        }
+        else if (Event & ACPI_PCIE_WAKE)
+        {
+            fixme("ACPI PCIe Wake");
+        }
+        else if (Event & ACPI_WAKE)
+        {
+            fixme("ACPI Wake");
+        }
+        else if (Event & ACPI_TIMER)
+        {
+            fixme("ACPI Timer");
+        }
+        else
+        {
+            error("ACPI unknown event %#lx on CPU %d", Event, GetCurrentCPU()->ID);
+            CPU::Stop();
+        }
+        UNUSED(Frame);
+    }
+
+    void DSDT::Shutdown()
+    {
+        trace("Shutting down...");
+        if (SCI_EN == 1)
+        {
+            outw(acpi->FADT->PM1aControlBlock, (inw(acpi->FADT->PM1aControlBlock) & 0xE3FF) | ((SLP_TYPa << 10) | ACPI_SLEEP));
+            if (acpi->FADT->PM1bControlBlock)
+                outw(acpi->FADT->PM1bControlBlock, (inw(acpi->FADT->PM1bControlBlock) & 0xE3FF) | ((SLP_TYPb << 10) | ACPI_SLEEP));
+            outw(PM1a_CNT, SLP_TYPa | SLP_EN);
+            if (PM1b_CNT)
+                outw(PM1b_CNT, SLP_TYPb | SLP_EN);
+        }
+    }
+
+    void DSDT::Reboot()
+    {
+        trace("Rebooting...");
+        switch (acpi->FADT->ResetReg.AddressSpace)
+        {
+        case ACPI_GAS_MMIO:
+            *(uint8_t *)(acpi->FADT->ResetReg.Address) = acpi->FADT->ResetValue;
+            break;
+        case ACPI_GAS_IO:
+            outb(acpi->FADT->ResetReg.Address, acpi->FADT->ResetValue);
+            break;
+        case ACPI_GAS_PCI:
+            fixme("ACPI_GAS_PCI not supported.");
+            /*
+                seg      - 0
+                bus      - 0
+                dev      - (FADT->ResetReg.Address >> 32) & 0xFFFF
+                function - (FADT->ResetReg.Address >> 16) & 0xFFFF
+                offset   - FADT->ResetReg.Address & 0xFFFF
+                value    - FADT->ResetValue
+            */
+            break;
+        }
+    }
+
+    DSDT::DSDT(ACPI *acpi) : Interrupts::Handler(acpi->FADT->SCI_Interrupt + CPU::x86::IRQ0)
+    {
+        this->acpi = acpi;
+        uint64_t Address = ((IsCanonical(acpi->FADT->X_Dsdt) && acpi->XSDTSupported) ? acpi->FADT->X_Dsdt : acpi->FADT->Dsdt);
+        uint8_t *S5Address = (uint8_t *)(Address) + 36;
+        ACPI::ACPI::ACPIHeader *Header = (ACPI::ACPI::ACPIHeader *)Address;
+        uint64_t Length = Header->Length;
+        while (Length-- > 0)
+        {
+            if (!memcmp(S5Address, "_S5_", 4))
+                break;
+            S5Address++;
+        }
+        if (Length <= 0)
+        {
+            warn("_S5 not present in ACPI");
+            return;
+        }
+        if ((*(S5Address - 1) == 0x08 || (*(S5Address - 2) == 0x08 && *(S5Address - 1) == '\\')) && *(S5Address + 4) == 0x12)
+        {
+            S5Address += 5;
+            S5Address += ((*S5Address & 0xC0) >> 6) + 2;
+            if (*S5Address == 0x0A)
+                S5Address++;
+            SLP_TYPa = *(S5Address) << 10;
+            S5Address++;
+            if (*S5Address == 0x0A)
+                S5Address++;
+            SLP_TYPb = *(S5Address) << 10;
+            SMI_CMD = acpi->FADT->SMI_CommandPort;
+            ACPI_ENABLE = acpi->FADT->AcpiEnable;
+            ACPI_DISABLE = acpi->FADT->AcpiDisable;
+            PM1a_CNT = acpi->FADT->PM1aControlBlock;
+            PM1b_CNT = acpi->FADT->PM1bControlBlock;
+            PM1_CNT_LEN = acpi->FADT->PM1ControlLength;
+            SLP_EN = 1 << 13;
+            SCI_EN = 1;
+            trace("ACPI Shutdown is supported");
+            ACPIShutdownSupported = true;
+
+            uint16_t value = ACPI_POWER_BUTTON | ACPI_SLEEP_BUTTON | ACPI_WAKE;
+            {
+                uint16_t a = acpi->FADT->PM1aEventBlock + (acpi->FADT->PM1EventLength / 2);
+                uint16_t b = acpi->FADT->PM1bEventBlock + (acpi->FADT->PM1EventLength / 2);
+                debug("SCI Event: %#llx [a:%#x b:%#x]", value, a, b);
+                if (acpi->FADT->PM1aEventBlock)
+                    outw(a, value);
+                if (acpi->FADT->PM1bEventBlock)
+                    outw(b, value);
+            }
+
+            {
+                uint16_t a = 0, b = 0;
+                if (acpi->FADT->PM1aEventBlock)
+                {
+                    a = inw(acpi->FADT->PM1aEventBlock);
+                    outw(acpi->FADT->PM1aEventBlock, a);
+                }
+                if (acpi->FADT->PM1bEventBlock)
+                {
+                    b = inw(acpi->FADT->PM1bEventBlock);
+                    outw(acpi->FADT->PM1bEventBlock, b);
+                }
+            }
+            ((APIC::APIC *)Interrupts::apic[0])->RedirectIRQ(0, acpi->FADT->SCI_Interrupt, 1);
+            return;
+        }
+        warn("Failed to parse _S5 in ACPI");
+        SCI_EN = 0;
+    }
+
+    DSDT::~DSDT()
+    {
+    }
+}

Kernel/Architecture/amd64/MultipleAPICDescriptionTable.cpp

@@ -0,0 +1,69 @@
+#include "acpi.hpp"
+
+#include <memory.hpp>
+#include <debug.h>
+
+#include "../../kernel.h"
+
+namespace ACPI
+{
+    MADT::MADT(ACPI::MADTHeader *madt)
+    {
+        trace("Initializing MADT");
+        CPUCores = 0;
+        LAPICAddress = (LAPIC *)(uintptr_t)madt->LocalControllerAddress;
+        for (uint8_t *ptr = (uint8_t *)(madt->Entries);
+             (uintptr_t)(ptr) < (uintptr_t)(madt) + madt->Header.Length;
+             ptr += *(ptr + 1))
+        {
+            switch (*(ptr))
+            {
+            case 0:
+            {
+                if (ptr[4] & 1)
+                {
+                    lapic.push_back((LocalAPIC *)ptr);
+                    KPrint("Local APIC \e8888FF%d\eCCCCCC (APIC \e8888FF%d\eCCCCCC) found.", lapic.back()->ACPIProcessorId, lapic.back()->APICId);
+                    CPUCores++;
+                }
+                break;
+            }
+            case 1:
+            {
+                ioapic.push_back((MADTIOApic *)ptr);
+                KPrint("I/O APIC \e8888FF%d\eCCCCCC (Address \e8888FF%#lx\eCCCCCC) found.", ioapic.back()->APICID, ioapic.back()->Address);
+                Memory::Virtual().Map((void *)(uintptr_t)ioapic.back()->Address, (void *)(uintptr_t)ioapic.back()->Address, Memory::PTFlag::RW | Memory::PTFlag::PCD); // Make sure that the address is mapped.
+                break;
+            }
+            case 2:
+            {
+                iso.push_back((MADTIso *)ptr);
+                KPrint("ISO (IRQ:\e8888FF%#lx\eCCCCCC, BUS:\e8888FF%#lx\eCCCCCC, GSI:\e8888FF%#lx\eCCCCCC, %s\eCCCCCC/%s\eCCCCCC) found.",
+                       iso.back()->IRQSource, iso.back()->BuSSource, iso.back()->GSI,
+                       iso.back()->Flags & 0x00000004 ? "\e1770FFActive High" : "\e475EFFActive Low",
+                       iso.back()->Flags & 0x00000100 ? "\e00962DEdge Triggered" : "\e008F58Level Triggered");
+                break;
+            }
+            case 4:
+            {
+                nmi.push_back((MADTNmi *)ptr);
+                KPrint("NMI \e8888FF%#lx\eCCCCCC (lint:\e8888FF%#lx\eCCCCCC) found.", nmi.back()->processor, nmi.back()->lint);
+                break;
+            }
+            case 5:
+            {
+                LAPICAddress = (LAPIC *)ptr;
+                KPrint("APIC found at \e8888FF%#lx\eCCCCCC", LAPICAddress);
+                break;
+            }
+            }
+            Memory::Virtual().Map((void *)LAPICAddress, (void *)LAPICAddress, Memory::PTFlag::RW | Memory::PTFlag::PCD); // I should map more than one page?
+        }
+        CPUCores--; // We start at 0 (BSP) and end at 11 (APs), so we have 12 cores.
+        KPrint("Total CPU cores: %d", CPUCores + 1);
+    }
+
+    MADT::~MADT()
+    {
+    }
+}

Kernel/Architecture/amd64/SystemCalls.cpp

@@ -0,0 +1,85 @@
+#include <syscalls.hpp>
+
+#include <cpu.hpp>
+
+#include "cpu/gdt.hpp"
+
+// https://supercip971.github.io/02-wingos-syscalls.html
+using namespace CPU::x64;
+
+// "Core/SystemCalls.cpp"
+extern "C" uint64_t SystemCallsHandler(SyscallsFrame *regs);
+
+extern "C" void SystemCallHandlerStub();
+
+extern "C" __attribute__((naked, used, no_stack_protector)) void SystemCallHandlerStub_broken()
+{
+    // asmv(
+    //     // "cmp $0x08, 0x8(%rsp)\n"
+    //     //  "je 1f\n"
+    //     "swapgs\n"
+    //     //  "1:\n"
+
+    //     "mov %rsp, 0x8(%gs)\n" // CPUData->TempStack
+    //     "mov 0x0(%gs), %rsp\n" // CPUData->SystemCallStack
+    //     "push $0x1b\n"         // user data segment
+    //     "push 0x8(%gs)\n"      // saved stack
+    //     "push %r11\n"          // saved rflags
+    //     "push $0x23\n"         // user code segment
+    //     "push %rcx\n"          // Current RIP
+
+    //     "push %rax\n"
+    //     "push %rbx\n"
+    //     "push %rcx\n"
+    //     "push %rdx\n"
+    //     "push %rsi\n"
+    //     "push %rdi\n"
+    //     "push %rbp\n"
+    //     "push %r8\n"
+    //     "push %r9\n"
+    //     "push %r10\n"
+    //     "push %r11\n"
+    //     "push %r12\n"
+    //     "push %r13\n"
+    //     "push %r14\n"
+    //     "push %r15\n"
+
+    //     "mov %rsp, %rdi\n"
+    //     "mov $0, %rbp\n"
+    //     "call SystemCallsHandler\n"
+
+    //     "pop %r15\n"
+    //     "pop %r14\n"
+    //     "pop %r13\n"
+    //     "pop %r12\n"
+    //     "pop %r11\n"
+    //     "pop %r10\n"
+    //     "pop %r9\n"
+    //     "pop %r8\n"
+    //     "pop %rbp\n"
+    //     "pop %rdi\n"
+    //     "pop %rsi\n"
+    //     "pop %rdx\n"
+    //     "pop %rcx\n"
+    //     "pop %rbx\n"
+    //     /* "pop %rax\n" */
+
+    //     "mov 0x8(%gs), %rsp\n" // CPUData->TempStack
+
+    //     //  "cmp $0x08, 0x8(%rsp)\n"
+    //     //  "je 1f\n"
+    //     "swapgs\n"
+    //     //  "1:\n"
+
+    //     "sti\n"
+
+    //     "sysretq\n");
+}
+
+void InitializeSystemCalls()
+{
+    wrmsr(MSR_EFER, rdmsr(MSR_EFER) | 1);
+    wrmsr(MSR_STAR, ((uint64_t)(GDT_KERNEL_CODE) << 32) | ((uint64_t)(GDT_KERNEL_DATA | 3) << 48));
+    wrmsr(MSR_LSTAR, (uint64_t)SystemCallHandlerStub);
+    wrmsr(MSR_SYSCALL_MASK, (uint64_t)(1 << 9));
+}

Kernel/Architecture/amd64/SystemCallsAssemblyStub.asm

@@ -0,0 +1,59 @@
+[BITS 64]
+
+%macro PushAllSC 0
+    push rax
+    push rbx
+    push rcx
+    push rdx
+    push rsi
+    push rdi
+    push rbp
+    push r8
+    push r9
+    push r10
+    push r11
+    push r12
+    push r13
+    push r14
+    push r15
+%endmacro
+
+%macro PopAllSC 0
+    pop r15
+    pop r14
+    pop r13
+    pop r12
+    pop r11
+    pop r10
+    pop r9
+    pop r8
+    pop rbp
+    pop rdi
+    pop rsi
+    pop rdx
+    pop rcx
+    pop rbx
+%endmacro
+
+ALIGN 4096
+extern SystemCallsHandler
+global SystemCallHandlerStub
+SystemCallHandlerStub:
+    swapgs                  ; Swap gs and kernelgs
+    mov [gs:0x8], rsp       ; CPUData->TempStack
+    mov rsp, [gs:0x0]       ; CPUData->SystemCallStack
+    push qword 0x1b         ; User data segment
+    push qword [gs:0x8]     ; Saved stack
+    push r11                ; Saved rflags
+    push qword 0x23         ; User code segment
+    push rcx                ; Current instruction pointer
+    cld                     ; Clear direction flag
+    PushAllSC               ; Push all registers
+    mov rdi, rsp            ; Pass pointer to registers
+    mov rbp, 0              ; Pass 0 as return address
+    call SystemCallsHandler ; Call system call handler
+    PopAllSC                ; Pop all registers except rax
+    mov rsp, [gs:0x8]       ; Restore stack
+    swapgs                  ; Swap back gs and kernelgs
+    sti                     ; Enable interrupts
+    o64 sysret              ; Return to user mode

Kernel/Architecture/amd64/acpi.hpp

@@ -0,0 +1,277 @@
+#ifndef __FENNIX_KERNEL_ACPI_H__
+#define __FENNIX_KERNEL_ACPI_H__
+
+#include <types.h>
+
+#include <boot/binfo.h>
+#include <ints.hpp>
+#include <vector.hpp>
+#include <cpu.hpp>
+
+namespace ACPI
+{
+    class ACPI
+    {
+    public:
+        struct ACPIHeader
+        {
+            unsigned char Signature[4];
+            uint32_t Length;
+            uint8_t Revision;
+            uint8_t Checksum;
+            uint8_t OEMID[6];
+            uint8_t OEMTableID[8];
+            uint32_t OEMRevision;
+            uint32_t CreatorID;
+            uint32_t CreatorRevision;
+        } __attribute__((packed));
+
+        struct GenericAddressStructure
+        {
+            uint8_t AddressSpace;
+            uint8_t BitWidth;
+            uint8_t BitOffset;
+            uint8_t AccessSize;
+            uint64_t Address;
+        } __attribute__((packed));
+
+        struct MCFGHeader
+        {
+            struct ACPIHeader Header;
+            uint64_t Reserved;
+        } __attribute__((packed));
+
+        struct HPETHeader
+        {
+            ACPIHeader Header;
+            uint8_t HardwareRevID;
+            uint8_t ComparatorCount : 5;
+            uint8_t CounterSize : 1;
+            uint8_t Reserved : 1;
+            uint8_t LegacyReplacement : 1;
+            uint16_t PCIVendorID;
+            struct GenericAddressStructure Address;
+            uint8_t HPETNumber;
+            uint16_t MinimumTick;
+            uint8_t PageProtection;
+        } __attribute__((packed));
+
+        struct FADTHeader
+        {
+            ACPIHeader Header;
+            uint32_t FirmwareCtrl;
+            uint32_t Dsdt;
+            uint8_t Reserved;
+            uint8_t PreferredPowerManagementProfile;
+            uint16_t SCI_Interrupt;
+            uint32_t SMI_CommandPort;
+            uint8_t AcpiEnable;
+            uint8_t AcpiDisable;
+            uint8_t S4BIOS_REQ;
+            uint8_t PSTATE_Control;
+            uint32_t PM1aEventBlock;
+            uint32_t PM1bEventBlock;
+            uint32_t PM1aControlBlock;
+            uint32_t PM1bControlBlock;
+            uint32_t PM2ControlBlock;
+            uint32_t PMTimerBlock;
+            uint32_t GPE0Block;
+            uint32_t GPE1Block;
+            uint8_t PM1EventLength;
+            uint8_t PM1ControlLength;
+            uint8_t PM2ControlLength;
+            uint8_t PMTimerLength;
+            uint8_t GPE0Length;
+            uint8_t GPE1Length;
+            uint8_t GPE1Base;
+            uint8_t CStateControl;
+            uint16_t WorstC2Latency;
+            uint16_t WorstC3Latency;
+            uint16_t FlushSize;
+            uint16_t FlushStride;
+            uint8_t DutyOffset;
+            uint8_t DutyWidth;
+            uint8_t DayAlarm;
+            uint8_t MonthAlarm;
+            uint8_t Century;
+            uint16_t BootArchitectureFlags;
+            uint8_t Reserved2;
+            uint32_t Flags;
+            struct GenericAddressStructure ResetReg;
+            uint8_t ResetValue;
+            uint8_t Reserved3[3];
+            uint64_t X_FirmwareControl;
+            uint64_t X_Dsdt;
+            struct GenericAddressStructure X_PM1aEventBlock;
+            struct GenericAddressStructure X_PM1bEventBlock;
+            struct GenericAddressStructure X_PM1aControlBlock;
+            struct GenericAddressStructure X_PM1bControlBlock;
+            struct GenericAddressStructure X_PM2ControlBlock;
+            struct GenericAddressStructure X_PMTimerBlock;
+            struct GenericAddressStructure X_GPE0Block;
+            struct GenericAddressStructure X_GPE1Block;
+        } __attribute__((packed));
+
+        struct BGRTHeader
+        {
+            ACPIHeader Header;
+            uint16_t Version;
+            uint8_t Status;
+            uint8_t ImageType;
+            uint64_t ImageAddress;
+            uint32_t ImageOffsetX;
+            uint32_t ImageOffsetY;
+        };
+
+        struct SRATHeader
+        {
+            ACPIHeader Header;
+            uint32_t TableRevision; // Must be value 1
+            uint64_t Reserved;      // Reserved, must be zero
+        };
+
+        struct TPM2Header
+        {
+            ACPIHeader Header;
+            uint32_t Flags;
+            uint64_t ControlAddress;
+            uint32_t StartMethod;
+        };
+
+        struct TCPAHeader
+        {
+            ACPIHeader Header;
+            uint16_t Reserved;
+            uint32_t MaxLogLength;
+            uint64_t LogAddress;
+        };
+
+        struct WAETHeader
+        {
+            ACPIHeader Header;
+            uint32_t Flags;
+        };
+
+        struct HESTHeader
+        {
+            ACPIHeader Header;
+            uint32_t ErrorSourceCount;
+        };
+
+        struct MADTHeader
+        {
+            ACPIHeader Header;
+            uint32_t LocalControllerAddress;
+            uint32_t Flags;
+            char Entries[];
+        } __attribute__((packed));
+
+        ACPIHeader *XSDT = nullptr;
+        MCFGHeader *MCFG = nullptr;
+        HPETHeader *HPET = nullptr;
+        FADTHeader *FADT = nullptr;
+        BGRTHeader *BGRT = nullptr;
+        SRATHeader *SRAT = nullptr;
+        TPM2Header *TPM2 = nullptr;
+        TCPAHeader *TCPA = nullptr;
+        WAETHeader *WAET = nullptr;
+        MADTHeader *MADT = nullptr;
+        HESTHeader *HEST = nullptr;
+        bool XSDTSupported = false;
+
+        void *FindTable(ACPIHeader *ACPIHeader, char *Signature);
+        void SearchTables(ACPIHeader *Header);
+        ACPI(BootInfo *Info);
+        ~ACPI();
+    };
+
+    class MADT
+    {
+    public:
+        struct APICHeader
+        {
+            uint8_t Type;
+            uint8_t Length;
+        } __attribute__((packed));
+
+        struct MADTIOApic
+        {
+            struct APICHeader Header;
+            uint8_t APICID;
+            uint8_t reserved;
+            uint32_t Address;
+            uint32_t GSIBase;
+        } __attribute__((packed));
+
+        struct MADTIso
+        {
+            struct APICHeader Header;
+            uint8_t BuSSource;
+            uint8_t IRQSource;
+            uint32_t GSI;
+            uint16_t Flags;
+        } __attribute__((packed));
+
+        struct MADTNmi
+        {
+            struct APICHeader Header;
+            uint8_t processor;
+            uint16_t flags;
+            uint8_t lint;
+        } __attribute__((packed));
+
+        struct LocalAPIC
+        {
+            struct APICHeader Header;
+            uint8_t ACPIProcessorId;
+            uint8_t APICId;
+            uint32_t Flags;
+        } __attribute__((packed));
+
+        struct LAPIC
+        {
+            uint8_t id;
+            uintptr_t PhysicalAddress;
+            void *VirtualAddress;
+        };
+
+        Vector<MADTIOApic *> ioapic;
+        Vector<MADTIso *> iso;
+        Vector<MADTNmi *> nmi;
+        Vector<LocalAPIC *> lapic;
+        struct LAPIC *LAPICAddress;
+        uint16_t CPUCores;
+
+        MADT(ACPI::MADTHeader *madt);
+        ~MADT();
+    };
+
+    class DSDT : public Interrupts::Handler
+    {
+    private:
+        uint32_t SMI_CMD = 0;
+        uint8_t ACPI_ENABLE = 0;
+        uint8_t ACPI_DISABLE = 0;
+        uint32_t PM1a_CNT = 0;
+        uint32_t PM1b_CNT = 0;
+        uint16_t SLP_TYPa = 0;
+        uint16_t SLP_TYPb = 0;
+        uint16_t SLP_EN = 0;
+        uint16_t SCI_EN = 0;
+        uint8_t PM1_CNT_LEN = 0;
+
+        ACPI *acpi;
+        void OnInterruptReceived(CPU::x64::TrapFrame *Frame);
+
+    public:
+        bool ACPIShutdownSupported = false;
+
+        void Reboot();
+        void Shutdown();
+
+        DSDT(ACPI *acpi);
+        ~DSDT();
+    };
+}
+
+#endif // !__FENNIX_KERNEL_ACPI_H__

Kernel/Architecture/amd64/cpu/AdvancedProgrammableInterruptController.cpp

@@ -0,0 +1,384 @@
+#include "apic.hpp"
+
+#include <memory.hpp>
+#include <uart.hpp>
+#include <lock.hpp>
+#include <cpu.hpp>
+#include <smp.hpp>
+#include <io.h>
+
+#include "../../../kernel.h"
+#include "../acpi.hpp"
+
+NewLock(APICLock);
+
+using namespace CPU::x64;
+using namespace CPU::x86;
+
+/*
+In constructor ‘APIC::APIC::APIC(int)’:
+warning: left shift count >= width of type
+|         APICBaseAddress = BaseStruct.ApicBaseLo << 12u | BaseStruct.ApicBaseHi << 32u;
+|                                                          ~~~~~~~~~~~~~~~~~~~~~~^~~~~~
+*/
+#pragma GCC diagnostic ignored "-Wshift-count-overflow"
+
+namespace APIC
+{
+    // headache
+    // https://www.amd.com/system/files/TechDocs/24593.pdf
+    // https://www.naic.edu/~phil/software/intel/318148.pdf
+
+    uint32_t APIC::Read(uint32_t Register)
+    {
+        if (Register != APIC_ICRLO &&
+            Register != APIC_ICRHI &&
+            Register != APIC_ID)
+            debug("APIC::Read(%#lx) [x2=%d]", Register, x2APICSupported ? 1 : 0);
+        if (x2APICSupported)
+        {
+            if (Register != APIC_ICRHI)
+                return rdmsr((Register >> 4) + 0x800);
+            else
+                return rdmsr(0x30 + 0x800);
+        }
+        else
+        {
+            CPU::MemBar::Barrier();
+            uint32_t ret = *((volatile uint32_t *)((uintptr_t)APICBaseAddress + Register));
+            CPU::MemBar::Barrier();
+            return ret;
+        }
+    }
+
+    void APIC::Write(uint32_t Register, uint32_t Value)
+    {
+        if (Register != APIC_EOI &&
+            Register != APIC_TDCR &&
+            Register != APIC_TIMER &&
+            Register != APIC_TICR &&
+            Register != APIC_ICRLO &&
+            Register != APIC_ICRHI)
+            debug("APIC::Write(%#lx, %#lx) [x2=%d]", Register, Value, x2APICSupported ? 1 : 0);
+        if (x2APICSupported)
+        {
+            if (Register != APIC_ICRHI)
+                wrmsr((Register >> 4) + 0x800, Value);
+            else
+                wrmsr(MSR_X2APIC_ICR, Value);
+        }
+        else
+        {
+            CPU::MemBar::Barrier();
+            *((volatile uint32_t *)(((uintptr_t)APICBaseAddress) + Register)) = Value;
+            CPU::MemBar::Barrier();
+        }
+    }
+
+    void APIC::IOWrite(uint64_t Base, uint32_t Register, uint32_t Value)
+    {
+        debug("APIC::IOWrite(%#lx, %#lx, %#lx)", Base, Register, Value);
+        CPU::MemBar::Barrier();
+        *((volatile uint32_t *)(((uintptr_t)Base))) = Register;
+        CPU::MemBar::Barrier();
+        *((volatile uint32_t *)(((uintptr_t)Base + 16))) = Value;
+        CPU::MemBar::Barrier();
+    }
+
+    uint32_t APIC::IORead(uint64_t Base, uint32_t Register)
+    {
+        debug("APIC::IORead(%#lx, %#lx)", Base, Register);
+        CPU::MemBar::Barrier();
+        *((volatile uint32_t *)(((uintptr_t)Base))) = Register;
+        CPU::MemBar::Barrier();
+        uint32_t ret = *((volatile uint32_t *)(((uintptr_t)Base + 16)));
+        CPU::MemBar::Barrier();
+        return ret;
+    }
+
+    void APIC::EOI() { this->Write(APIC_EOI, 0); }
+
+    void APIC::WaitForIPI()
+    {
+        InterruptCommandRegisterLow icr = {.raw = 0};
+        do
+        {
+            icr.raw = this->Read(APIC_ICRLO);
+        } while (icr.DeliveryStatus != Idle);
+    }
+
+    void APIC::IPI(uint8_t CPU, InterruptCommandRegisterLow icr)
+    {
+        SmartCriticalSection(APICLock);
+        if (x2APICSupported)
+        {
+            fixme("Not implemented for x2APIC");
+            // wrmsr(MSR_X2APIC_ICR, ((uint64_t)CPU) << 32);
+        }
+        else
+        {
+            this->Write(APIC_ICRHI, (CPU << 24));
+            this->Write(APIC_ICRLO, icr.raw);
+            this->WaitForIPI();
+        }
+    }
+
+    void APIC::SendInitIPI(uint8_t CPU)
+    {
+        SmartCriticalSection(APICLock);
+        if (x2APICSupported)
+        {
+            fixme("Not implemented for x2APIC");
+            // wrmsr(MSR_X2APIC_ICR, ((uint64_t)CPU) << 32);
+        }
+        else
+        {
+            InterruptCommandRegisterLow icr = {.raw = 0};
+            icr.DeliveryMode = INIT;
+            icr.Level = Assert;
+            this->Write(APIC_ICRHI, (CPU << 24));
+            this->Write(APIC_ICRLO, icr.raw);
+            this->WaitForIPI();
+        }
+    }
+
+    void APIC::SendStartupIPI(uint8_t CPU, uint64_t StartupAddress)
+    {
+        SmartCriticalSection(APICLock);
+        if (x2APICSupported)
+        {
+            warn("Not tested for x2APIC");
+            wrmsr(MSR_X2APIC_ICR, ((uint64_t)CPU) << 32 | StartupAddress);
+        }
+        else
+        {
+            InterruptCommandRegisterLow icr = {.raw = 0};
+            icr.Vector = StartupAddress >> 12;
+            icr.DeliveryMode = Startup;
+            icr.Level = Assert;
+            this->Write(APIC_ICRHI, (CPU << 24));
+            this->Write(APIC_ICRLO, icr.raw);
+            this->WaitForIPI();
+        }
+    }
+
+    uint32_t APIC::IOGetMaxRedirect(uint32_t APICID)
+    {
+        uint32_t TableAddress = (this->IORead((((ACPI::MADT *)PowerManager->GetMADT())->ioapic[APICID]->Address), GetIOAPICVersion));
+        return ((IOAPICVersion *)&TableAddress)->MaximumRedirectionEntry;
+    }
+
+    void APIC::RawRedirectIRQ(uint8_t Vector, uint32_t GSI, uint16_t Flags, int CPU, int Status)
+    {
+        uint64_t Value = Vector;
+
+        int64_t IOAPICTarget = -1;
+        for (uint64_t i = 0; ((ACPI::MADT *)PowerManager->GetMADT())->ioapic[i] != 0; i++)
+            if (((ACPI::MADT *)PowerManager->GetMADT())->ioapic[i]->GSIBase <= GSI)
+                if (((ACPI::MADT *)PowerManager->GetMADT())->ioapic[i]->GSIBase + IOGetMaxRedirect(i) > GSI)
+                {
+                    IOAPICTarget = i;
+                    break;
+                }
+
+        if (IOAPICTarget == -1)
+        {
+            error("No ISO table found for I/O APIC");
+            return;
+        }
+
+        // TODO: IOAPICRedirectEntry Entry = {.raw = 0};
+
+        if (Flags & ActiveHighLow)
+            Value |= (1 << 13);
+
+        if (Flags & EdgeLevel)
+            Value |= (1 << 15);
+
+        if (!Status)
+            Value |= (1 << 16);
+
+        Value |= (((uintptr_t)CPU) << 56);
+        uint32_t IORegister = (GSI - ((ACPI::MADT *)PowerManager->GetMADT())->ioapic[IOAPICTarget]->GSIBase) * 2 + 16;
+
+        this->IOWrite(((ACPI::MADT *)PowerManager->GetMADT())->ioapic[IOAPICTarget]->Address, IORegister, (uint32_t)Value);
+        this->IOWrite(((ACPI::MADT *)PowerManager->GetMADT())->ioapic[IOAPICTarget]->Address, IORegister + 1, (uint32_t)(Value >> 32));
+    }
+
+    void APIC::RedirectIRQ(int CPU, uint8_t IRQ, int Status)
+    {
+        for (uint64_t i = 0; i < ((ACPI::MADT *)PowerManager->GetMADT())->iso.size(); i++)
+            if (((ACPI::MADT *)PowerManager->GetMADT())->iso[i]->IRQSource == IRQ)
+            {
+                debug("[ISO %d] Mapping to source IRQ%#d GSI:%#lx on CPU %d",
+                      i, ((ACPI::MADT *)PowerManager->GetMADT())->iso[i]->IRQSource, ((ACPI::MADT *)PowerManager->GetMADT())->iso[i]->GSI, CPU);
+
+                this->RawRedirectIRQ(((ACPI::MADT *)PowerManager->GetMADT())->iso[i]->IRQSource + 0x20, ((ACPI::MADT *)PowerManager->GetMADT())->iso[i]->GSI, ((ACPI::MADT *)PowerManager->GetMADT())->iso[i]->Flags, CPU, Status);
+                return;
+            }
+        debug("Mapping IRQ%d on CPU %d", IRQ, CPU);
+        this->RawRedirectIRQ(IRQ + 0x20, IRQ, 0, CPU, Status);
+    }
+
+    void APIC::RedirectIRQs(int CPU)
+    {
+        SmartCriticalSection(APICLock);
+        debug("Redirecting IRQs...");
+        for (int i = 0; i < 16; i++)
+            this->RedirectIRQ(CPU, i, 1);
+        debug("Redirecting IRQs completed.");
+    }
+
+    APIC::APIC(int Core)
+    {
+        SmartCriticalSection(APICLock);
+        APIC_BASE BaseStruct = {.raw = rdmsr(MSR_APIC_BASE)};
+        uint64_t BaseLow = BaseStruct.ApicBaseLo;
+        uint64_t BaseHigh = BaseStruct.ApicBaseHi;
+        this->APICBaseAddress = BaseLow << 12u | BaseHigh << 32u;
+        trace("APIC Address: %#lx", this->APICBaseAddress);
+
+        bool x2APICSupported = false;
+        if (strcmp(CPU::Vendor(), x86_CPUID_VENDOR_AMD) == 0)
+        {
+#if defined(a64)
+            CPU::x64::AMD::CPUID0x1 cpuid1amd;
+#elif defined(a32)
+            CPU::x32::AMD::CPUID0x1 cpuid1amd;
+#endif
+#if defined(a64) || defined(a32)
+            asmv("cpuid"
+                 : "=a"(cpuid1amd.EAX.raw), "=b"(cpuid1amd.EBX.raw), "=c"(cpuid1amd.ECX.raw), "=d"(cpuid1amd.EDX.raw)
+                 : "a"(0x1));
+#endif
+            // FIXME: Not sure if I configured this correctly or something else is wrong
+            // x2APICSupported = cpuid1amd.ECX.x2APIC;
+            fixme("AMD does even support x2APIC? ECX->Reserved10: %#lx", cpuid1amd.ECX.Reserved10);
+        }
+        else if (strcmp(CPU::Vendor(), x86_CPUID_VENDOR_INTEL) == 0)
+        {
+#if defined(a64)
+            CPU::x64::Intel::CPUID0x1 cpuid1intel;
+#elif defined(a32)
+            CPU::x32::Intel::CPUID0x1 cpuid1intel;
+#endif
+#if defined(a64) || defined(a32)
+            asmv("cpuid"
+                 : "=a"(cpuid1intel.EAX.raw), "=b"(cpuid1intel.EBX.raw), "=c"(cpuid1intel.ECX.raw), "=d"(cpuid1intel.EDX.raw)
+                 : "a"(0x1));
+#endif
+            x2APICSupported = cpuid1intel.ECX.x2APIC;
+        }
+
+        if (x2APICSupported)
+        {
+            this->x2APICSupported = true;
+            wrmsr(MSR_APIC_BASE, (rdmsr(MSR_APIC_BASE) | (1 << 11)) & ~(1 << 10));
+            BaseStruct.EN = 1;
+            wrmsr(MSR_APIC_BASE, BaseStruct.raw);
+        }
+        else
+        {
+            BaseStruct.EN = 1;
+            wrmsr(MSR_APIC_BASE, BaseStruct.raw);
+        }
+
+        this->Write(APIC_TPR, 0x0);
+        // this->Write(APIC_SVR, this->Read(APIC_SVR) | 0x100); // 0x1FF or 0x100 ? on https://wiki.osdev.org/APIC is 0x100
+
+        if (!this->x2APICSupported)
+        {
+            this->Write(APIC_DFR, 0xF0000000);
+            this->Write(APIC_LDR, this->Read(APIC_ID));
+        }
+
+        ACPI::MADT *madt = (ACPI::MADT *)PowerManager->GetMADT();
+
+        for (size_t i = 0; i < madt->nmi.size(); i++)
+        {
+            if (madt->nmi[i]->processor != 0xFF && Core != madt->nmi[i]->processor)
+                return;
+
+            uint32_t nmi = 0x402;
+            if (madt->nmi[i]->flags & 2)
+                nmi |= 1 << 13;
+            if (madt->nmi[i]->flags & 8)
+                nmi |= 1 << 15;
+            if (madt->nmi[i]->lint == 0)
+                this->Write(APIC_LINT0, nmi);
+            else if (madt->nmi[i]->lint == 1)
+                this->Write(APIC_LINT1, nmi);
+        }
+
+        // Setup the spurrious interrupt vector
+        Spurious Spurious = {.raw = this->Read(APIC_SVR)};
+        Spurious.Vector = IRQ223; // TODO: Should I map the IRQ to something?
+        Spurious.Software = 1;
+        this->Write(APIC_SVR, Spurious.raw);
+
+        static int once = 0;
+        if (!once++)
+        {
+            // Disable PIT
+            outb(0x43, 0x28);
+            outb(0x40, 0x0);
+
+            // Disable PIC
+            outb(0x21, 0xFF);
+            outb(0xA1, 0xFF);
+        }
+    }
+
+    APIC::~APIC() {}
+
+    void Timer::OnInterruptReceived(TrapFrame *Frame) { UNUSED(Frame); }
+
+    void Timer::OneShot(uint32_t Vector, uint64_t Miliseconds)
+    {
+        SmartCriticalSection(APICLock);
+        LVTTimer timer = {.raw = 0};
+        timer.Vector = Vector;
+        timer.TimerMode = 0;
+        if (strcmp(CPU::Hypervisor(), x86_CPUID_VENDOR_TCG) != 0)
+            this->lapic->Write(APIC_TDCR, DivideBy128);
+        else
+            this->lapic->Write(APIC_TDCR, DivideBy16);
+        this->lapic->Write(APIC_TICR, Ticks * Miliseconds);
+        this->lapic->Write(APIC_TIMER, timer.raw);
+    }
+
+    Timer::Timer(APIC *apic) : Interrupts::Handler(IRQ0)
+    {
+        SmartCriticalSection(APICLock);
+        this->lapic = apic;
+        LVTTimerDivide Divider = DivideBy16;
+
+        trace("Initializing APIC timer on CPU %d", GetCurrentCPU()->ID);
+
+        this->lapic->Write(APIC_TDCR, Divider);
+        this->lapic->Write(APIC_TICR, 0xFFFFFFFF);
+
+        TimeManager->Sleep(1);
+
+        // Mask the timer
+        this->lapic->Write(APIC_TIMER, 0x10000 /* LVTTimer.Mask flag */);
+        Ticks = 0xFFFFFFFF - this->lapic->Read(APIC_TCCR);
+
+        // Config for IRQ0 timer
+        LVTTimer timer = {.raw = 0};
+        timer.Vector = IRQ0;
+        timer.Mask = Unmasked;
+        timer.TimerMode = LVTTimerMode::OneShot;
+
+        // Initialize APIC timer
+        this->lapic->Write(APIC_TDCR, Divider);
+        this->lapic->Write(APIC_TICR, Ticks);
+        this->lapic->Write(APIC_TIMER, timer.raw);
+        trace("%d APIC Timer %d ticks in.", GetCurrentCPU()->ID, Ticks);
+        KPrint("APIC Timer: \e8888FF%ld\eCCCCCC ticks.", Ticks);
+    }
+
+    Timer::~Timer()
+    {
+    }
+}

Kernel/Architecture/amd64/cpu/GlobalDescriptorTable.cpp

@@ -0,0 +1,164 @@
+#include "gdt.hpp"
+
+#include <memory.hpp>
+#include <smp.hpp>
+#include <cpu.hpp>
+#include <debug.h>
+
+namespace GlobalDescriptorTable
+{
+    static GlobalDescriptorTableEntries GDTEntriesTemplate = {
+        // null
+        {.Length = 0x0,
+         .BaseLow = 0x0,
+         .BaseMiddle = 0x0,
+         .Access = {.Raw = 0x0},
+         .Flags = {.Raw = 0x0},
+         .BaseHigh = 0x0},
+
+        // kernel code
+        {.Length = 0x0,
+         .BaseLow = 0x0,
+         .BaseMiddle = 0x0,
+         .Access = {.A = 0,
+                    .RW = 1,
+                    .DC = 0,
+                    .E = 1,
+                    .S = 1,
+                    .DPL = 0,
+                    .P = 1},
+         .Flags = {.Unknown = 0x0, .L = 1},
+         .BaseHigh = 0x0},
+
+        // kernel data
+        {.Length = 0x0,
+         .BaseLow = 0x0,
+         .BaseMiddle = 0x0,
+         .Access = {.A = 0,
+                    .RW = 1,
+                    .DC = 0,
+                    .E = 0,
+                    .S = 1,
+                    .DPL = 0,
+                    .P = 1},
+         .Flags = {.Raw = 0x0},
+         .BaseHigh = 0x0},
+
+        // user data
+        {.Length = 0x0,
+         .BaseLow = 0x0,
+         .BaseMiddle = 0x0,
+         .Access = {.A = 0,
+                    .RW = 1,
+                    .DC = 0,
+                    .E = 0,
+                    .S = 1,
+                    .DPL = 3,
+                    .P = 1},
+         .Flags = {.Raw = 0x0},
+         .BaseHigh = 0x0},
+
+        // user code
+        {.Length = 0x0,
+         .BaseLow = 0x0,
+         .BaseMiddle = 0x0,
+         .Access = {.A = 0,
+                    .RW = 1,
+                    .DC = 0,
+                    .E = 1,
+                    .S = 1,
+                    .DPL = 3,
+                    .P = 1},
+         .Flags = {.Unknown = 0x0, .L = 1},
+         .BaseHigh = 0x0},
+
+        // tss
+        {}};
+
+    GlobalDescriptorTableEntries GDTEntries[MAX_CPU];
+    GlobalDescriptorTableDescriptor gdt[MAX_CPU];
+
+    TaskStateSegment tss[MAX_CPU] = {
+        0,
+        {0, 0, 0},
+        0,
+        {0, 0, 0, 0, 0, 0, 0},
+        0,
+        0,
+        0,
+    };
+
+    void *CPUStackPointer[MAX_CPU];
+
+    SafeFunction void Init(int Core)
+    {
+        memcpy(&GDTEntries[Core], &GDTEntriesTemplate, sizeof(GlobalDescriptorTableEntries));
+        gdt[Core] = {.Length = sizeof(GlobalDescriptorTableEntries) - 1, .Entries = &GDTEntries[Core]};
+
+        debug("Kernel: Code Access: %ld; Data Access: %ld", GDTEntries[Core].Code.Access.Raw, GDTEntries[Core].Data.Access.Raw);
+        debug("Kernel: Code Flags: %ld; Data Flags: %ld", GDTEntries[Core].Code.Flags.Raw, GDTEntries[Core].Data.Flags.Raw);
+        debug("User: Code Access: %ld; Data Access: %ld", GDTEntries[Core].UserCode.Access.Raw, GDTEntries[Core].UserData.Access.Raw);
+        debug("User: Code Flags: %ld; Data Flags: %ld", GDTEntries[Core].UserCode.Flags.Raw, GDTEntries[Core].UserData.Flags.Raw);
+        CPU::x64::lgdt(&gdt[Core]);
+
+        asmv("movq %%rsp, %%rax\n"
+             "pushq $16\n"
+             "pushq %%rax\n"
+             "pushfq\n"
+             "pushq $8\n"
+             "pushq $1f\n"
+             "iretq\n"
+             "1:\n"
+             "movw $16, %%ax\n"
+             "movw %%ax, %%ds\n"
+             "movw %%ax, %%es\n" ::
+                 : "memory", "rax");
+
+        CPUStackPointer[Core] = KernelAllocator.RequestPages(TO_PAGES(STACK_SIZE));
+        memset(CPUStackPointer[Core], 0, STACK_SIZE);
+        debug("CPU %d Stack Pointer: %#lx", Core, CPUStackPointer[Core]);
+
+        uint64_t Base = (uint64_t)&tss[Core];
+        uint64_t Limit = Base + sizeof(TaskStateSegment);
+        gdt[Core].Entries->TaskStateSegment.Length = Limit & 0xFFFF;
+        gdt[Core].Entries->TaskStateSegment.BaseLow = Base & 0xFFFF;
+        gdt[Core].Entries->TaskStateSegment.BaseMiddle = (Base >> 16) & 0xFF;
+        gdt[Core].Entries->TaskStateSegment.BaseHigh = (Base >> 24) & 0xFF;
+        gdt[Core].Entries->TaskStateSegment.BaseUpper = (Base >> 32) & 0xFFFFFFFF;
+        gdt[Core].Entries->TaskStateSegment.Flags = {.A = 1, .RW = 0, .DC = 0, .E = 1, .S = 0, .DPL = 0, .P = 1};
+        gdt[Core].Entries->TaskStateSegment.Granularity = (0 << 4) | ((Limit >> 16) & 0xF);
+
+        tss[Core].IOMapBaseAddressOffset = sizeof(TaskStateSegment);
+        tss[Core].StackPointer[0] = (uint64_t)CPUStackPointer[Core] + STACK_SIZE;
+        tss[Core].InterruptStackTable[0] = (uint64_t)KernelAllocator.RequestPages(TO_PAGES(STACK_SIZE)) + STACK_SIZE;
+        tss[Core].InterruptStackTable[1] = (uint64_t)KernelAllocator.RequestPages(TO_PAGES(STACK_SIZE)) + STACK_SIZE;
+        tss[Core].InterruptStackTable[2] = (uint64_t)KernelAllocator.RequestPages(TO_PAGES(STACK_SIZE)) + STACK_SIZE;
+        memset((void *)(tss[Core].InterruptStackTable[0] - STACK_SIZE), 0, STACK_SIZE);
+        memset((void *)(tss[Core].InterruptStackTable[1] - STACK_SIZE), 0, STACK_SIZE);
+        memset((void *)(tss[Core].InterruptStackTable[2] - STACK_SIZE), 0, STACK_SIZE);
+
+        CPU::x64::ltr(GDT_TSS);
+        asmv("mov %%rsp, %0"
+             : "=r"(tss[Core].StackPointer[0]));
+
+        debug("GDT_KERNEL_CODE: %#lx", GDT_KERNEL_CODE);
+        debug("GDT_KERNEL_DATA: %#lx", GDT_KERNEL_DATA);
+        debug("GDT_USER_CODE: %#lx", GDT_USER_CODE);
+        debug("GDT_USER_DATA: %#lx", GDT_USER_DATA);
+        debug("GDT_TSS: %#lx", GDT_TSS);
+        debug("Global Descriptor Table initialized");
+    }
+
+    SafeFunction void SetKernelStack(void *Stack)
+    {
+        long CPUID = GetCurrentCPU()->ID;
+        if (Stack != nullptr)
+            tss[CPUID].StackPointer[0] = (uint64_t)Stack;
+        else
+            tss[CPUID].StackPointer[0] = (uint64_t)CPUStackPointer[CPUID] + STACK_SIZE;
+
+        // TODO: This may cause problems in the future I guess? This should be checked later
+        asmv("mov %%rsp, %0"
+             : "=r"(tss[CPUID].StackPointer[0]));
+    }
+}

Kernel/Architecture/amd64/cpu/InterruptDescriptorTable.cpp

@@ -0,0 +1,790 @@
+#include "idt.hpp"
+
+#include <memory.hpp>
+#include <cpu.hpp>
+#include <debug.h>
+#include <io.h>
+
+#include "gdt.hpp"
+
+extern "C" void MainInterruptHandler(void *Data);
+extern "C" void ExceptionHandler(void *Data);
+
+namespace InterruptDescriptorTable
+{
+    static InterruptDescriptorTableEntry Entries[0x100];
+
+    InterruptDescriptorTableDescriptor idtd = {.Length = sizeof(Entries) - 1,
+                                               .Entries = Entries};
+
+    void SetEntry(uint8_t Index,
+                  void (*Base)(),
+                  InterruptDescriptorTableFlags Attribute,
+                  uint8_t InterruptStackTable,
+                  InterruptDescriptorTableFlags Ring,
+                  uint16_t SegmentSelector)
+    {
+        Entries[Index].BaseLow = (uint16_t)((uint64_t)Base & 0xFFFF);
+        Entries[Index].BaseHigh = (uint64_t)((uint64_t)Base >> 16 /* & 0xFFFF */);
+        Entries[Index].SegmentSelector = SegmentSelector;
+        Entries[Index].Flags = Attribute;
+        Entries[Index].Reserved1 = 0;
+        Entries[Index].Reserved2 = 0;
+        Entries[Index].Reserved3 = 0;
+        Entries[Index].InterruptStackTable = InterruptStackTable;
+        Entries[Index].Ring = Ring;
+        Entries[Index].Present = 1;
+    }
+
+    extern "C" __attribute__((naked, used, no_stack_protector)) void ExceptionHandlerStub()
+    {
+        asm(
+            // "cmp $0x1000, %rsp\n"    // Just in case the stack is corrupted
+            // "jng .skip_swap_check_1\n" /* if is not greater than */
+            // "cmpw $0x8, 0x8(%rsp)\n"
+            // "je .skip_swap_check_1\n"
+            // "swapgs\n"
+            // ".skip_swap_check_1:\n"
+
+            "cld\n" // clear direction flag
+
+            // push all registers
+            "pushq %rax\n"
+            "pushq %rbx\n"
+            "pushq %rcx\n"
+            "pushq %rdx\n"
+            "pushq %rsi\n"
+            "pushq %rdi\n"
+            "pushq %rbp\n"
+            "pushq %r8\n"
+            "pushq %r9\n"
+            "pushq %r10\n"
+            "pushq %r11\n"
+            "pushq %r12\n"
+            "pushq %r13\n"
+            "pushq %r14\n"
+            "pushq %r15\n"
+
+            "movq %rsp, %rdi\n"
+            "call ExceptionHandler\n"
+
+            // pop all registers
+            "popq %r15\n"
+            "popq %r14\n"
+            "popq %r13\n"
+            "popq %r12\n"
+            "popq %r11\n"
+            "popq %r10\n"
+            "popq %r9\n"
+            "popq %r8\n"
+            "popq %rbp\n"
+            "popq %rdi\n"
+            "popq %rsi\n"
+            "popq %rdx\n"
+            "popq %rcx\n"
+            "popq %rbx\n"
+            "popq %rax\n"
+
+            "addq $16, %rsp\n"
+
+            // "cmp $0x1000, %rsp\n"
+            // "jng .skip_swap_check_2\n"
+            // "cmpw $0x8, 0x8(%rsp)\n"
+            // "je .skip_swap_check_2\n"
+            // "swapgs\n"
+            // ".skip_swap_check_2:\n"
+
+            "iretq"); // pop CS RIP RFLAGS SS RSP
+    }
+
+    extern "C" void WarnSwapgs() { warn("swapgs"); }
+
+    // void *OriginalCR3;
+    extern "C" __attribute__((naked, used, no_stack_protector)) void InterruptHandlerStub()
+    {
+        // // Store cr3 to OriginalCR3
+        // asmv("mov %%cr3, %0"
+        //      : "=q"(OriginalCR3)
+        //      :
+        //      : "memory");
+        // // Set cr3 to KPT (Kernel Page Table)
+        // asmv("mov %0, %%cr3"
+        //      :
+        //      : "q"(KPT)
+        //      : "memory");
+
+        // GlobalDescriptorTable::SetKernelStack(nullptr);
+
+        asm(
+            // "cmp $0x1000, %rsp\n"
+            // "jng .skip_swap_check__1\n"
+            // "cmpw $0x8, 0x8(%rsp)\n"
+            // "je .skip_swap_check__1\n"
+            // "swapgs\n"
+            // "call WarnSwapgs\n"
+            // ".skip_swap_check__1:\n"
+
+            "cld\n"
+            "pushq %rax\n"
+            "pushq %rbx\n"
+            "pushq %rcx\n"
+            "pushq %rdx\n"
+            "pushq %rsi\n"
+            "pushq %rdi\n"
+            "pushq %rbp\n"
+            "pushq %r8\n"
+            "pushq %r9\n"
+            "pushq %r10\n"
+            "pushq %r11\n"
+            "pushq %r12\n"
+            "pushq %r13\n"
+            "pushq %r14\n"
+            "pushq %r15\n"
+
+            "movq %rsp, %rdi\n"
+            "call MainInterruptHandler\n");
+
+        // // Check if the current cr3 is the same as the KPT
+        // // If not, then we need to restore the cr3
+        // asmv("pushq %rax\n"        // push rax
+        //      "pushq %rbx\n"        // push rbx
+        //      "movq %cr3, %rbx\n"); // mov cr3 to rbx
+        // asmv("movq %0, %%rax\n"    // mov KPT to rax
+        //      :
+        //      : "q"(KPT)
+        //      : "memory");
+        // asmv("cmpq %rax, %rbx\n"         // compare cr3 to rax
+        //      "jne .skip_restore_cr3\n"); // if not equal, skip restore cr3
+        // asmv("movq %0, %%cr3\n" // restore cr3
+        //      :
+        //      : "q"(OriginalCR3)
+        //      : "memory");
+        // asm(".skip_restore_cr3:\n" // skip restore cr3 label
+        //     "popq %rax\n"          // KPT
+        //     "popq %rbx\n");        // cr3
+
+        asm("popq %r15\n"
+            "popq %r14\n"
+            "popq %r13\n"
+            "popq %r12\n"
+            "popq %r11\n"
+            "popq %r10\n"
+            "popq %r9\n"
+            "popq %r8\n"
+            "popq %rbp\n"
+            "popq %rdi\n"
+            "popq %rsi\n"
+            "popq %rdx\n"
+            "popq %rcx\n"
+            "popq %rbx\n"
+            "popq %rax\n"
+
+            "addq $16, %rsp\n"
+
+            // "cmp $0x1000, %rsp\n"
+            // "jng .skip_swap_check__2\n"
+            // "cmpw $0x8, 0x8(%rsp)\n"
+            // "je .skip_swap_check__2\n"
+            // "call WarnSwapgs\n"
+            // "swapgs\n"
+            // ".skip_swap_check__2:\n"
+
+            "iretq");
+    }
+
+#pragma region Exceptions
+
+#define EXCEPTION_HANDLER(num)                                                      \
+    __attribute__((naked, no_stack_protector)) static void InterruptHandler_##num() \
+    {                                                                               \
+        asm("pushq $0\npushq $" #num "\n"                                           \
+            "jmp ExceptionHandlerStub");                                            \
+    }
+
+#define EXCEPTION_ERROR_HANDLER(num)                                                \
+    __attribute__((naked, no_stack_protector)) static void InterruptHandler_##num() \
+    {                                                                               \
+        asm("pushq $" #num "\n"                                                     \
+            "jmp ExceptionHandlerStub");                                            \
+    }
+
+#define INTERRUPT_HANDLER(num)                                                     \
+    __attribute__((naked, used, no_stack_protector)) void InterruptHandler_##num() \
+    {                                                                              \
+        asm("pushq $0\npushq $" #num "\n"                                          \
+            "jmp InterruptHandlerStub\n");                                         \
+    }
+
+    /* ISR */
+
+    EXCEPTION_HANDLER(0x0);
+    EXCEPTION_HANDLER(0x1);
+    EXCEPTION_HANDLER(0x2);
+    EXCEPTION_HANDLER(0x3);
+    EXCEPTION_HANDLER(0x4);
+    EXCEPTION_HANDLER(0x5);
+    EXCEPTION_HANDLER(0x6);
+    EXCEPTION_HANDLER(0x7);
+    EXCEPTION_ERROR_HANDLER(0x8);
+    EXCEPTION_HANDLER(0x9);
+    EXCEPTION_ERROR_HANDLER(0xa);
+    EXCEPTION_ERROR_HANDLER(0xb);
+    EXCEPTION_ERROR_HANDLER(0xc);
+    EXCEPTION_ERROR_HANDLER(0xd);
+    EXCEPTION_ERROR_HANDLER(0xe);
+    EXCEPTION_HANDLER(0xf);
+    EXCEPTION_ERROR_HANDLER(0x10);
+    EXCEPTION_HANDLER(0x11);
+    EXCEPTION_HANDLER(0x12);
+    EXCEPTION_HANDLER(0x13);
+    EXCEPTION_HANDLER(0x14);
+    EXCEPTION_HANDLER(0x15);
+    EXCEPTION_HANDLER(0x16);
+    EXCEPTION_HANDLER(0x17);
+    EXCEPTION_HANDLER(0x18);
+    EXCEPTION_HANDLER(0x19);
+    EXCEPTION_HANDLER(0x1a);
+    EXCEPTION_HANDLER(0x1b);
+    EXCEPTION_HANDLER(0x1c);
+    EXCEPTION_HANDLER(0x1d);
+    EXCEPTION_HANDLER(0x1e);
+    EXCEPTION_HANDLER(0x1f);
+
+    /* IRQ */
+
+    INTERRUPT_HANDLER(0x20)
+    INTERRUPT_HANDLER(0x21)
+    INTERRUPT_HANDLER(0x22)
+    INTERRUPT_HANDLER(0x23)
+    INTERRUPT_HANDLER(0x24)
+    INTERRUPT_HANDLER(0x25)
+    INTERRUPT_HANDLER(0x26)
+    INTERRUPT_HANDLER(0x27)
+    INTERRUPT_HANDLER(0x28)
+    INTERRUPT_HANDLER(0x29)
+    INTERRUPT_HANDLER(0x2a)
+    INTERRUPT_HANDLER(0x2b)
+    INTERRUPT_HANDLER(0x2c)
+    INTERRUPT_HANDLER(0x2d)
+    INTERRUPT_HANDLER(0x2e)
+    INTERRUPT_HANDLER(0x2f)
+
+    /* Reserved by OS */
+
+    INTERRUPT_HANDLER(0x30)
+    INTERRUPT_HANDLER(0x31)
+    INTERRUPT_HANDLER(0x32)
+    INTERRUPT_HANDLER(0x33)
+    INTERRUPT_HANDLER(0x34)
+    INTERRUPT_HANDLER(0x35)
+    INTERRUPT_HANDLER(0x36)
+    INTERRUPT_HANDLER(0x37)
+    INTERRUPT_HANDLER(0x38)
+    INTERRUPT_HANDLER(0x39)
+    INTERRUPT_HANDLER(0x3a)
+    INTERRUPT_HANDLER(0x3b)
+    INTERRUPT_HANDLER(0x3c)
+    INTERRUPT_HANDLER(0x3d)
+
+    /* Free */
+
+    INTERRUPT_HANDLER(0x3e)
+    INTERRUPT_HANDLER(0x3f)
+    INTERRUPT_HANDLER(0x40)
+    INTERRUPT_HANDLER(0x41)
+    INTERRUPT_HANDLER(0x42)
+    INTERRUPT_HANDLER(0x43)
+    INTERRUPT_HANDLER(0x44)
+    INTERRUPT_HANDLER(0x45)
+    INTERRUPT_HANDLER(0x46)
+    INTERRUPT_HANDLER(0x47)
+    INTERRUPT_HANDLER(0x48)
+    INTERRUPT_HANDLER(0x49)
+    INTERRUPT_HANDLER(0x4a)
+    INTERRUPT_HANDLER(0x4b)
+    INTERRUPT_HANDLER(0x4c)
+    INTERRUPT_HANDLER(0x4d)
+    INTERRUPT_HANDLER(0x4e)
+    INTERRUPT_HANDLER(0x4f)
+    INTERRUPT_HANDLER(0x50)
+    INTERRUPT_HANDLER(0x51)
+    INTERRUPT_HANDLER(0x52)
+    INTERRUPT_HANDLER(0x53)
+    INTERRUPT_HANDLER(0x54)
+    INTERRUPT_HANDLER(0x55)
+    INTERRUPT_HANDLER(0x56)
+    INTERRUPT_HANDLER(0x57)
+    INTERRUPT_HANDLER(0x58)
+    INTERRUPT_HANDLER(0x59)
+    INTERRUPT_HANDLER(0x5a)
+    INTERRUPT_HANDLER(0x5b)
+    INTERRUPT_HANDLER(0x5c)
+    INTERRUPT_HANDLER(0x5d)
+    INTERRUPT_HANDLER(0x5e)
+    INTERRUPT_HANDLER(0x5f)
+    INTERRUPT_HANDLER(0x60)
+    INTERRUPT_HANDLER(0x61)
+    INTERRUPT_HANDLER(0x62)
+    INTERRUPT_HANDLER(0x63)
+    INTERRUPT_HANDLER(0x64)
+    INTERRUPT_HANDLER(0x65)
+    INTERRUPT_HANDLER(0x66)
+    INTERRUPT_HANDLER(0x67)
+    INTERRUPT_HANDLER(0x68)
+    INTERRUPT_HANDLER(0x69)
+    INTERRUPT_HANDLER(0x6a)
+    INTERRUPT_HANDLER(0x6b)
+    INTERRUPT_HANDLER(0x6c)
+    INTERRUPT_HANDLER(0x6d)
+    INTERRUPT_HANDLER(0x6e)
+    INTERRUPT_HANDLER(0x6f)
+    INTERRUPT_HANDLER(0x70)
+    INTERRUPT_HANDLER(0x71)
+    INTERRUPT_HANDLER(0x72)
+    INTERRUPT_HANDLER(0x73)
+    INTERRUPT_HANDLER(0x74)
+    INTERRUPT_HANDLER(0x75)
+    INTERRUPT_HANDLER(0x76)
+    INTERRUPT_HANDLER(0x77)
+    INTERRUPT_HANDLER(0x78)
+    INTERRUPT_HANDLER(0x79)
+    INTERRUPT_HANDLER(0x7a)
+    INTERRUPT_HANDLER(0x7b)
+    INTERRUPT_HANDLER(0x7c)
+    INTERRUPT_HANDLER(0x7d)
+    INTERRUPT_HANDLER(0x7e)
+    INTERRUPT_HANDLER(0x7f)
+    INTERRUPT_HANDLER(0x80)
+    INTERRUPT_HANDLER(0x81)
+    INTERRUPT_HANDLER(0x82)
+    INTERRUPT_HANDLER(0x83)
+    INTERRUPT_HANDLER(0x84)
+    INTERRUPT_HANDLER(0x85)
+    INTERRUPT_HANDLER(0x86)
+    INTERRUPT_HANDLER(0x87)
+    INTERRUPT_HANDLER(0x88)
+    INTERRUPT_HANDLER(0x89)
+    INTERRUPT_HANDLER(0x8a)
+    INTERRUPT_HANDLER(0x8b)
+    INTERRUPT_HANDLER(0x8c)
+    INTERRUPT_HANDLER(0x8d)
+    INTERRUPT_HANDLER(0x8e)
+    INTERRUPT_HANDLER(0x8f)
+    INTERRUPT_HANDLER(0x90)
+    INTERRUPT_HANDLER(0x91)
+    INTERRUPT_HANDLER(0x92)
+    INTERRUPT_HANDLER(0x93)
+    INTERRUPT_HANDLER(0x94)
+    INTERRUPT_HANDLER(0x95)
+    INTERRUPT_HANDLER(0x96)
+    INTERRUPT_HANDLER(0x97)
+    INTERRUPT_HANDLER(0x98)
+    INTERRUPT_HANDLER(0x99)
+    INTERRUPT_HANDLER(0x9a)
+    INTERRUPT_HANDLER(0x9b)
+    INTERRUPT_HANDLER(0x9c)
+    INTERRUPT_HANDLER(0x9d)
+    INTERRUPT_HANDLER(0x9e)
+    INTERRUPT_HANDLER(0x9f)
+    INTERRUPT_HANDLER(0xa0)
+    INTERRUPT_HANDLER(0xa1)
+    INTERRUPT_HANDLER(0xa2)
+    INTERRUPT_HANDLER(0xa3)
+    INTERRUPT_HANDLER(0xa4)
+    INTERRUPT_HANDLER(0xa5)
+    INTERRUPT_HANDLER(0xa6)
+    INTERRUPT_HANDLER(0xa7)
+    INTERRUPT_HANDLER(0xa8)
+    INTERRUPT_HANDLER(0xa9)
+    INTERRUPT_HANDLER(0xaa)
+    INTERRUPT_HANDLER(0xab)
+    INTERRUPT_HANDLER(0xac)
+    INTERRUPT_HANDLER(0xad)
+    INTERRUPT_HANDLER(0xae)
+    INTERRUPT_HANDLER(0xaf)
+    INTERRUPT_HANDLER(0xb0)
+    INTERRUPT_HANDLER(0xb1)
+    INTERRUPT_HANDLER(0xb2)
+    INTERRUPT_HANDLER(0xb3)
+    INTERRUPT_HANDLER(0xb4)
+    INTERRUPT_HANDLER(0xb5)
+    INTERRUPT_HANDLER(0xb6)
+    INTERRUPT_HANDLER(0xb7)
+    INTERRUPT_HANDLER(0xb8)
+    INTERRUPT_HANDLER(0xb9)
+    INTERRUPT_HANDLER(0xba)
+    INTERRUPT_HANDLER(0xbb)
+    INTERRUPT_HANDLER(0xbc)
+    INTERRUPT_HANDLER(0xbd)
+    INTERRUPT_HANDLER(0xbe)
+    INTERRUPT_HANDLER(0xbf)
+    INTERRUPT_HANDLER(0xc0)
+    INTERRUPT_HANDLER(0xc1)
+    INTERRUPT_HANDLER(0xc2)
+    INTERRUPT_HANDLER(0xc3)
+    INTERRUPT_HANDLER(0xc4)
+    INTERRUPT_HANDLER(0xc5)
+    INTERRUPT_HANDLER(0xc6)
+    INTERRUPT_HANDLER(0xc7)
+    INTERRUPT_HANDLER(0xc8)
+    INTERRUPT_HANDLER(0xc9)
+    INTERRUPT_HANDLER(0xca)
+    INTERRUPT_HANDLER(0xcb)
+    INTERRUPT_HANDLER(0xcc)
+    INTERRUPT_HANDLER(0xcd)
+    INTERRUPT_HANDLER(0xce)
+    INTERRUPT_HANDLER(0xcf)
+    INTERRUPT_HANDLER(0xd0)
+    INTERRUPT_HANDLER(0xd1)
+    INTERRUPT_HANDLER(0xd2)
+    INTERRUPT_HANDLER(0xd3)
+    INTERRUPT_HANDLER(0xd4)
+    INTERRUPT_HANDLER(0xd5)
+    INTERRUPT_HANDLER(0xd6)
+    INTERRUPT_HANDLER(0xd7)
+    INTERRUPT_HANDLER(0xd8)
+    INTERRUPT_HANDLER(0xd9)
+    INTERRUPT_HANDLER(0xda)
+    INTERRUPT_HANDLER(0xdb)
+    INTERRUPT_HANDLER(0xdc)
+    INTERRUPT_HANDLER(0xdd)
+    INTERRUPT_HANDLER(0xde)
+    INTERRUPT_HANDLER(0xdf)
+    INTERRUPT_HANDLER(0xe0)
+    INTERRUPT_HANDLER(0xe1)
+    INTERRUPT_HANDLER(0xe2)
+    INTERRUPT_HANDLER(0xe3)
+    INTERRUPT_HANDLER(0xe4)
+    INTERRUPT_HANDLER(0xe5)
+    INTERRUPT_HANDLER(0xe6)
+    INTERRUPT_HANDLER(0xe7)
+    INTERRUPT_HANDLER(0xe8)
+    INTERRUPT_HANDLER(0xe9)
+    INTERRUPT_HANDLER(0xea)
+    INTERRUPT_HANDLER(0xeb)
+    INTERRUPT_HANDLER(0xec)
+    INTERRUPT_HANDLER(0xed)
+    INTERRUPT_HANDLER(0xee)
+    INTERRUPT_HANDLER(0xef)
+    INTERRUPT_HANDLER(0xf0)
+    INTERRUPT_HANDLER(0xf1)
+    INTERRUPT_HANDLER(0xf2)
+    INTERRUPT_HANDLER(0xf3)
+    INTERRUPT_HANDLER(0xf4)
+    INTERRUPT_HANDLER(0xf5)
+    INTERRUPT_HANDLER(0xf6)
+    INTERRUPT_HANDLER(0xf7)
+    INTERRUPT_HANDLER(0xf8)
+    INTERRUPT_HANDLER(0xf9)
+    INTERRUPT_HANDLER(0xfa)
+    INTERRUPT_HANDLER(0xfb)
+    INTERRUPT_HANDLER(0xfc)
+    INTERRUPT_HANDLER(0xfd)
+    INTERRUPT_HANDLER(0xfe)
+    INTERRUPT_HANDLER(0xff)
+
+#pragma endregion Exceptions
+
+    void Init(int Core)
+    {
+        UNUSED(Core);
+        static int once = 0;
+        if (!once++)
+        {
+            // PIC
+            outb(0x20, 0x10 | 0x1);
+            outb(0x80, 0);
+            outb(0xA0, 0x10 | 0x10);
+            outb(0x80, 0);
+
+            outb(0x21, 0x20);
+            outb(0x80, 0);
+            outb(0xA1, 0x28);
+            outb(0x80, 0);
+
+            outb(0x21, 0x04);
+            outb(0x80, 0);
+            outb(0xA1, 0x02);
+            outb(0x80, 0);
+
+            outb(0x21, 1);
+            outb(0x80, 0);
+            outb(0xA1, 1);
+            outb(0x80, 0);
+
+            // Masking and disabling PIC
+            outb(0x21, 0xff);
+            outb(0x80, 0);
+            outb(0xA1, 0xff);
+        }
+
+        /* ISR */
+
+        SetEntry(0x0, InterruptHandler_0x0, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x1, InterruptHandler_0x1, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x2, InterruptHandler_0x2, FlagGate_32BIT_TRAP, 2, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x3, InterruptHandler_0x3, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x4, InterruptHandler_0x4, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x5, InterruptHandler_0x5, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x6, InterruptHandler_0x6, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x7, InterruptHandler_0x7, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x8, InterruptHandler_0x8, FlagGate_32BIT_TRAP, 3, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x9, InterruptHandler_0x9, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xa, InterruptHandler_0xa, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xb, InterruptHandler_0xb, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xc, InterruptHandler_0xc, FlagGate_32BIT_TRAP, 3, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xd, InterruptHandler_0xd, FlagGate_32BIT_TRAP, 3, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xe, InterruptHandler_0xe, FlagGate_32BIT_TRAP, 3, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xf, InterruptHandler_0xf, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x10, InterruptHandler_0x10, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x11, InterruptHandler_0x11, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x12, InterruptHandler_0x12, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x13, InterruptHandler_0x13, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x14, InterruptHandler_0x14, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x15, InterruptHandler_0x15, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x16, InterruptHandler_0x16, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x17, InterruptHandler_0x17, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x18, InterruptHandler_0x18, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x19, InterruptHandler_0x19, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x1a, InterruptHandler_0x1a, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x1b, InterruptHandler_0x1b, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x1c, InterruptHandler_0x1c, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x1d, InterruptHandler_0x1d, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x1e, InterruptHandler_0x1e, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x1f, InterruptHandler_0x1f, FlagGate_32BIT_TRAP, 1, FlagGate_RING0, GDT_KERNEL_CODE);
+
+        /* IRQ */
+
+        SetEntry(0x20, InterruptHandler_0x20, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x21, InterruptHandler_0x21, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x22, InterruptHandler_0x22, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x23, InterruptHandler_0x23, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x24, InterruptHandler_0x24, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x25, InterruptHandler_0x25, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x26, InterruptHandler_0x26, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x27, InterruptHandler_0x27, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x28, InterruptHandler_0x28, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x29, InterruptHandler_0x29, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x2a, InterruptHandler_0x2a, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x2b, InterruptHandler_0x2b, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x2c, InterruptHandler_0x2c, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x2d, InterruptHandler_0x2d, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x2e, InterruptHandler_0x2e, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x2f, InterruptHandler_0x2f, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+
+        /* Reserved by OS */
+
+        SetEntry(0x30, InterruptHandler_0x30, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x31, InterruptHandler_0x31, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x32, InterruptHandler_0x32, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x33, InterruptHandler_0x33, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x34, InterruptHandler_0x34, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x35, InterruptHandler_0x35, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x36, InterruptHandler_0x36, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x37, InterruptHandler_0x37, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x38, InterruptHandler_0x38, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x39, InterruptHandler_0x39, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x3a, InterruptHandler_0x3a, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x3b, InterruptHandler_0x3b, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x3c, InterruptHandler_0x3c, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x3d, InterruptHandler_0x3d, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+
+        /* Free */
+
+        SetEntry(0x3e, InterruptHandler_0x3e, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x3f, InterruptHandler_0x3f, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x40, InterruptHandler_0x40, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x41, InterruptHandler_0x41, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x42, InterruptHandler_0x42, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x43, InterruptHandler_0x43, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x44, InterruptHandler_0x44, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x45, InterruptHandler_0x45, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x46, InterruptHandler_0x46, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x47, InterruptHandler_0x47, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x48, InterruptHandler_0x48, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x49, InterruptHandler_0x49, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x4a, InterruptHandler_0x4a, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x4b, InterruptHandler_0x4b, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x4c, InterruptHandler_0x4c, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x4d, InterruptHandler_0x4d, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x4e, InterruptHandler_0x4e, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x4f, InterruptHandler_0x4f, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x50, InterruptHandler_0x50, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x51, InterruptHandler_0x51, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x52, InterruptHandler_0x52, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x53, InterruptHandler_0x53, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x54, InterruptHandler_0x54, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x55, InterruptHandler_0x55, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x56, InterruptHandler_0x56, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x57, InterruptHandler_0x57, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x58, InterruptHandler_0x58, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x59, InterruptHandler_0x59, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x5a, InterruptHandler_0x5a, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x5b, InterruptHandler_0x5b, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x5c, InterruptHandler_0x5c, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x5d, InterruptHandler_0x5d, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x5e, InterruptHandler_0x5e, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x5f, InterruptHandler_0x5f, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x60, InterruptHandler_0x60, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x61, InterruptHandler_0x61, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x62, InterruptHandler_0x62, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x63, InterruptHandler_0x63, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x64, InterruptHandler_0x64, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x65, InterruptHandler_0x65, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x66, InterruptHandler_0x66, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x67, InterruptHandler_0x67, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x68, InterruptHandler_0x68, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x69, InterruptHandler_0x69, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x6a, InterruptHandler_0x6a, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x6b, InterruptHandler_0x6b, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x6c, InterruptHandler_0x6c, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x6d, InterruptHandler_0x6d, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x6e, InterruptHandler_0x6e, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x6f, InterruptHandler_0x6f, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x70, InterruptHandler_0x70, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x71, InterruptHandler_0x71, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x72, InterruptHandler_0x72, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x73, InterruptHandler_0x73, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x74, InterruptHandler_0x74, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x75, InterruptHandler_0x75, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x76, InterruptHandler_0x76, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x77, InterruptHandler_0x77, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x78, InterruptHandler_0x78, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x79, InterruptHandler_0x79, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x7a, InterruptHandler_0x7a, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x7b, InterruptHandler_0x7b, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x7c, InterruptHandler_0x7c, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x7d, InterruptHandler_0x7d, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x7e, InterruptHandler_0x7e, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x7f, InterruptHandler_0x7f, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x80, InterruptHandler_0x80, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x81, InterruptHandler_0x81, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x82, InterruptHandler_0x82, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x83, InterruptHandler_0x83, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x84, InterruptHandler_0x84, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x85, InterruptHandler_0x85, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x86, InterruptHandler_0x86, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x87, InterruptHandler_0x87, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x88, InterruptHandler_0x88, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x89, InterruptHandler_0x89, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x8a, InterruptHandler_0x8a, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x8b, InterruptHandler_0x8b, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x8c, InterruptHandler_0x8c, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x8d, InterruptHandler_0x8d, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x8e, InterruptHandler_0x8e, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x8f, InterruptHandler_0x8f, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x90, InterruptHandler_0x90, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x91, InterruptHandler_0x91, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x92, InterruptHandler_0x92, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x93, InterruptHandler_0x93, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x94, InterruptHandler_0x94, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x95, InterruptHandler_0x95, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x96, InterruptHandler_0x96, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x97, InterruptHandler_0x97, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x98, InterruptHandler_0x98, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x99, InterruptHandler_0x99, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x9a, InterruptHandler_0x9a, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x9b, InterruptHandler_0x9b, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x9c, InterruptHandler_0x9c, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x9d, InterruptHandler_0x9d, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x9e, InterruptHandler_0x9e, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0x9f, InterruptHandler_0x9f, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xa0, InterruptHandler_0xa0, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xa1, InterruptHandler_0xa1, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xa2, InterruptHandler_0xa2, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xa3, InterruptHandler_0xa3, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xa4, InterruptHandler_0xa4, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xa5, InterruptHandler_0xa5, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xa6, InterruptHandler_0xa6, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xa7, InterruptHandler_0xa7, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xa8, InterruptHandler_0xa8, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xa9, InterruptHandler_0xa9, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xaa, InterruptHandler_0xaa, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xab, InterruptHandler_0xab, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xac, InterruptHandler_0xac, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xad, InterruptHandler_0xad, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xae, InterruptHandler_0xae, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xaf, InterruptHandler_0xaf, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xb0, InterruptHandler_0xb0, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xb1, InterruptHandler_0xb1, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xb2, InterruptHandler_0xb2, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xb3, InterruptHandler_0xb3, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xb4, InterruptHandler_0xb4, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xb5, InterruptHandler_0xb5, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xb6, InterruptHandler_0xb6, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xb7, InterruptHandler_0xb7, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xb8, InterruptHandler_0xb8, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xb9, InterruptHandler_0xb9, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xba, InterruptHandler_0xba, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xbb, InterruptHandler_0xbb, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xbc, InterruptHandler_0xbc, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xbd, InterruptHandler_0xbd, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xbe, InterruptHandler_0xbe, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xbf, InterruptHandler_0xbf, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xc0, InterruptHandler_0xc0, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xc1, InterruptHandler_0xc1, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xc2, InterruptHandler_0xc2, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xc3, InterruptHandler_0xc3, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xc4, InterruptHandler_0xc4, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xc5, InterruptHandler_0xc5, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xc6, InterruptHandler_0xc6, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xc7, InterruptHandler_0xc7, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xc8, InterruptHandler_0xc8, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xc9, InterruptHandler_0xc9, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xca, InterruptHandler_0xca, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xcb, InterruptHandler_0xcb, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xcc, InterruptHandler_0xcc, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xcd, InterruptHandler_0xcd, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xce, InterruptHandler_0xce, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xcf, InterruptHandler_0xcf, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xd0, InterruptHandler_0xd0, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xd1, InterruptHandler_0xd1, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xd2, InterruptHandler_0xd2, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xd3, InterruptHandler_0xd3, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xd4, InterruptHandler_0xd4, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xd5, InterruptHandler_0xd5, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xd6, InterruptHandler_0xd6, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xd7, InterruptHandler_0xd7, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xd8, InterruptHandler_0xd8, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xd9, InterruptHandler_0xd9, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xda, InterruptHandler_0xda, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xdb, InterruptHandler_0xdb, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xdc, InterruptHandler_0xdc, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xdd, InterruptHandler_0xdd, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xde, InterruptHandler_0xde, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xdf, InterruptHandler_0xdf, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xe0, InterruptHandler_0xe0, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xe1, InterruptHandler_0xe1, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xe2, InterruptHandler_0xe2, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xe3, InterruptHandler_0xe3, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xe4, InterruptHandler_0xe4, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xe5, InterruptHandler_0xe5, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xe6, InterruptHandler_0xe6, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xe7, InterruptHandler_0xe7, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xe8, InterruptHandler_0xe8, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xe9, InterruptHandler_0xe9, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xea, InterruptHandler_0xea, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xeb, InterruptHandler_0xeb, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xec, InterruptHandler_0xec, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xed, InterruptHandler_0xed, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xee, InterruptHandler_0xee, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xef, InterruptHandler_0xef, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xf0, InterruptHandler_0xf0, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xf1, InterruptHandler_0xf1, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xf2, InterruptHandler_0xf2, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xf3, InterruptHandler_0xf3, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xf4, InterruptHandler_0xf4, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xf5, InterruptHandler_0xf5, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xf6, InterruptHandler_0xf6, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xf7, InterruptHandler_0xf7, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xf8, InterruptHandler_0xf8, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xf9, InterruptHandler_0xf9, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xfa, InterruptHandler_0xfa, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xfb, InterruptHandler_0xfb, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xfc, InterruptHandler_0xfc, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xfd, InterruptHandler_0xfd, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xfe, InterruptHandler_0xfe, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        SetEntry(0xff, InterruptHandler_0xff, FlagGate_32BIT_TRAP, 0, FlagGate_RING0, GDT_KERNEL_CODE);
+        CPU::x64::lidt(&idtd);
+    }
+}

Kernel/Architecture/amd64/cpu/SMPTrampoline.asm

@@ -0,0 +1,113 @@
+[bits 16]
+TRAMPOLINE_BASE equ 0x2000
+
+extern StartCPU
+global _trampoline_start
+_trampoline_start:
+    cli
+    mov ax, 0x0
+    mov ds, ax
+    mov es, ax
+    mov fs, ax
+    mov gs, ax
+    mov ss, ax
+    o32 lgdt [ProtectedMode_gdtr - _trampoline_start + TRAMPOLINE_BASE]
+    mov eax, cr0
+    or al, 0x1
+    mov cr0, eax
+    jmp 0x8:(Trampoline32 - _trampoline_start + TRAMPOLINE_BASE)
+
+[bits 32]
+section .text
+Trampoline32:
+    mov bx, 0x10
+    mov ds, bx
+    mov es, bx
+    mov ss, bx
+    mov eax, dword [0x500]
+    mov cr3, eax
+    mov eax, cr4
+    or eax, 1 << 5 ; Set the PAE-bit, which is the 6th bit (bit 5).
+    or eax, 1 << 7
+    mov cr4, eax
+    mov ecx, 0xc0000080
+    rdmsr
+    or eax,1 << 8 ; LME
+    wrmsr
+    mov eax, cr0
+    or eax, 1 << 31
+    mov cr0, eax
+    lgdt [LongMode_gdtr - _trampoline_start + TRAMPOLINE_BASE]
+    jmp 0x8:(Trampoline64 - _trampoline_start + TRAMPOLINE_BASE)
+
+[bits 64]
+Trampoline64:
+    mov ax, 0x10
+    mov ds, ax
+    mov es, ax
+    mov ss, ax
+    mov ax, 0x0
+    mov fs, ax
+    mov gs, ax
+    lgdt [0x580]
+    lidt [0x590]
+    mov rsp, [0x570]
+    mov rbp, 0x0 ; Terminate stack traces here.
+    ; Reset RFLAGS.
+    push 0x0
+    popf
+    mov rax, qword vcode64
+    call vcode64
+
+vcode64:
+    push rbp
+    ; Set up SSE
+    mov rax, cr0
+    ; btr eax, 2
+    ; bts eax, 1
+    ; mov cr0, rax
+    mov rax, cr4
+    bts eax, 9
+    bts eax, 10
+    mov cr4, rax
+    mov rax, qword TrampolineExit
+    call rax
+
+align 16
+LongMode_gdtr:
+    dw LongModeGDTEnd - LongModeGDTStart - 1
+    dq LongModeGDTStart - _trampoline_start + TRAMPOLINE_BASE
+
+align 16
+LongModeGDTStart:
+    dq 0 ; NULL segment
+    dq 0x00AF98000000FFFF ; Code segment
+    dq 0x00CF92000000FFFF ; Data segment
+LongModeGDTEnd:
+
+align 16
+ProtectedMode_gdtr:
+    dw ProtectedModeGDTEnd - ProtectedModeGDTStart - 1
+    dd ProtectedModeGDTStart - _trampoline_start + TRAMPOLINE_BASE
+
+align 16
+ProtectedModeGDTStart:
+    dq 0 ; NULL segment
+    dq 0x00CF9A000000FFFF ; Code segment
+    dq 0x00CF92000000FFFF ; Data segment
+ProtectedModeGDTEnd:
+
+align 16
+ProtectedMode_idtr:
+    dw 0
+    dd 0
+    dd 0
+    align 16
+
+global _trampoline_end
+_trampoline_end:
+
+TrampolineExit:
+    call StartCPU
+
+times 512 - ($-$$) db 0

Kernel/Architecture/amd64/cpu/SymmetricMultiprocessing.cpp

@@ -0,0 +1,119 @@
+#include <smp.hpp>
+
+#include <ints.hpp>
+#include <memory.hpp>
+#include <assert.h>
+#include <cpu.hpp>
+
+#include "../../../kernel.h"
+#include "../acpi.hpp"
+#include "apic.hpp"
+
+extern "C" uint64_t _trampoline_start, _trampoline_end;
+
+enum SMPTrampolineAddress
+{
+    PAGE_TABLE = 0x500,
+    START_ADDR = 0x520,
+    STACK = 0x570,
+    GDT = 0x580,
+    IDT = 0x590,
+    CORE = 0x600,
+    TRAMPOLINE_START = 0x2000
+};
+
+volatile bool CPUEnabled = false;
+
+#pragma GCC diagnostic ignored "-Wmissing-field-initializers"
+static __attribute__((aligned(PAGE_SIZE))) CPUData CPUs[MAX_CPU] = {0};
+
+SafeFunction CPUData *GetCPU(long id) { return &CPUs[id]; }
+
+SafeFunction CPUData *GetCurrentCPU()
+{
+    if (unlikely(!Interrupts::apic[0]))
+        return &CPUs[0]; /* No APIC means we are on the BSP. */
+    int CoreID = ((APIC::APIC *)Interrupts::apic[0])->Read(APIC::APIC_ID) >> 24;
+
+    if (unlikely((&CPUs[CoreID])->IsActive != true))
+    {
+        error("CPU %d is not active!", CoreID);
+        assert((&CPUs[0])->IsActive == true); /* We can't continue without the BSP. */
+        return &CPUs[0];
+    }
+
+    assert((&CPUs[CoreID])->Checksum == CPU_DATA_CHECKSUM); /* This should never happen. */
+    return &CPUs[CoreID];
+}
+
+extern "C" void StartCPU()
+{
+    CPU::Interrupts(CPU::Disable);
+    uint64_t CoreID = (int)*reinterpret_cast<int *>(CORE);
+    CPU::InitializeFeatures(CoreID);
+    // Initialize GDT and IDT
+    Interrupts::Initialize(CoreID);
+    Interrupts::Enable(CoreID);
+    Interrupts::InitializeTimer(CoreID);
+
+    CPU::Interrupts(CPU::Enable);
+    KPrint("\e058C19CPU \e8888FF%d \e058C19is online", CoreID);
+    CPUEnabled = true;
+    CPU::Halt(true);
+}
+
+namespace SMP
+{
+    int CPUCores = 0;
+
+    void Initialize(void *madt)
+    {
+        int Cores = ((ACPI::MADT *)madt)->CPUCores + 1;
+
+        if (Config.Cores > ((ACPI::MADT *)madt)->CPUCores + 1)
+            KPrint("More cores requested than available. Using %d cores", ((ACPI::MADT *)madt)->CPUCores + 1);
+        else if (Config.Cores != 0)
+            Cores = Config.Cores;
+
+        CPUCores = Cores;
+
+        for (int i = 0; i < Cores; i++)
+        {
+            debug("Initializing CPU %d", i);
+            if ((((APIC::APIC *)Interrupts::apic[0])->Read(APIC::APIC_ID) >> 24) != ((ACPI::MADT *)madt)->lapic[i]->ACPIProcessorId)
+            {
+                ((APIC::APIC *)Interrupts::apic[0])->Write(APIC::APIC_ICRHI, (((ACPI::MADT *)madt)->lapic[i]->APICId << 24));
+                ((APIC::APIC *)Interrupts::apic[0])->Write(APIC::APIC_ICRLO, 0x500);
+
+                Memory::Virtual().Map(0x0, 0x0, Memory::PTFlag::RW | Memory::PTFlag::US);
+
+                uint64_t TrampolineLength = (uintptr_t)&_trampoline_end - (uintptr_t)&_trampoline_start;
+                for (uint64_t i = 0; i < (TrampolineLength / PAGE_SIZE) + 2; i++)
+                    Memory::Virtual().Map((void *)(TRAMPOLINE_START + (i * PAGE_SIZE)), (void *)(TRAMPOLINE_START + (i * PAGE_SIZE)), Memory::PTFlag::RW | Memory::PTFlag::US);
+
+                memcpy((void *)TRAMPOLINE_START, &_trampoline_start, TrampolineLength);
+
+                POKE(volatile uint64_t, PAGE_TABLE) = CPU::x64::readcr3().raw;
+                POKE(volatile uint64_t, STACK) = (uint64_t)KernelAllocator.RequestPages(TO_PAGES(STACK_SIZE)) + STACK_SIZE;
+                POKE(volatile uint64_t, CORE) = i;
+
+                asmv("sgdt [0x580]\n"
+                     "sidt [0x590]\n");
+
+                POKE(volatile uint64_t, START_ADDR) = (uintptr_t)&StartCPU;
+
+                ((APIC::APIC *)Interrupts::apic[0])->SendInitIPI(((ACPI::MADT *)madt)->lapic[i]->APICId);
+                ((APIC::APIC *)Interrupts::apic[0])->SendStartupIPI(((ACPI::MADT *)madt)->lapic[i]->APICId, TRAMPOLINE_START);
+
+                while (!CPUEnabled)
+                    CPU::Pause();
+
+                trace("CPU %d loaded.", ((ACPI::MADT *)madt)->lapic[i]->APICId);
+                KernelAllocator.FreePages((void *)*reinterpret_cast<long *>(STACK), TO_PAGES(STACK_SIZE));
+                CPUEnabled = false;
+            }
+            else
+                KPrint("\e058C19CPU \e8888FF%d \e058C19is the BSP", ((ACPI::MADT *)madt)->lapic[i]->APICId);
+        }
+    }
+}

Kernel/Architecture/amd64/cpu/apic.hpp

@@ -0,0 +1,337 @@
+#ifndef __FENNIX_KERNEL_APIC_H__
+#define __FENNIX_KERNEL_APIC_H__
+
+#include <types.h>
+
+#include <ints.hpp>
+#include <cpu.hpp>
+
+namespace APIC
+{
+    enum APICRegisters
+    {
+        // source from: https://github.com/pdoane/osdev/blob/master/intr/local_apic.c
+        APIC_ID = 0x20,       // Local APIC ID
+        APIC_VER = 0x30,      // Local APIC Version
+        APIC_TPR = 0x80,      // Task Priority
+        APIC_APR = 0x90,      // Arbitration Priority
+        APIC_PPR = 0xA0,      // Processor Priority
+        APIC_EOI = 0xB0,      // EOI
+        APIC_RRD = 0xC0,      // Remote Read
+        APIC_LDR = 0xD0,      // Logical Destination
+        APIC_DFR = 0xE0,      // Destination Format
+        APIC_SVR = 0xF0,      // Spurious Interrupt Vector
+        APIC_ISR = 0x100,     // In-Service (8 registers)
+        APIC_TMR = 0x180,     // Trigger Mode (8 registers)
+        APIC_IRR = 0x200,     // Interrupt Request (8 registers)
+        APIC_ESR = 0x280,     // Error Status
+        APIC_ICRLO = 0x300,   // Interrupt Command
+        APIC_ICRHI = 0x310,   // Interrupt Command [63:32]
+        APIC_TIMER = 0x320,   // LVT Timer
+        APIC_THERMAL = 0x330, // LVT Thermal Sensor
+        APIC_PERF = 0x340,    // LVT Performance Counter
+        APIC_LINT0 = 0x350,   // LVT LINT0
+        APIC_LINT1 = 0x360,   // LVT LINT1
+        APIC_ERROR = 0x370,   // LVT Error
+        APIC_TICR = 0x380,    // Initial Count (for Timer)
+        APIC_TCCR = 0x390,    // Current Count (for Timer)
+        APIC_TDCR = 0x3E0,    // Divide Configuration (for Timer)
+    };
+
+    enum IOAPICRegisters
+    {
+        GetIOAPICVersion = 0x1
+    };
+
+    enum IOAPICFlags
+    {
+        ActiveHighLow = 2,
+        EdgeLevel = 8
+    };
+
+    enum APICDeliveryMode
+    {
+        Fixed = 0b000,
+        LowestPriority = 0b001, /* Reserved */
+        SMI = 0b010,
+        APIC_DELIVERY_MODE_RESERVED0 = 0b011, /* Reserved */
+        NMI = 0b100,
+        INIT = 0b101,
+        Startup = 0b110,
+        ExtINT = 0b111 /* Reserved */
+    };
+
+    enum APICDestinationMode
+    {
+        Physical = 0b0,
+        Logical = 0b1
+    };
+
+    enum APICDeliveryStatus
+    {
+        Idle = 0b0,
+        SendPending = 0b1
+    };
+
+    enum APICLevel
+    {
+        DeAssert = 0b0,
+        Assert = 0b1
+    };
+
+    enum APICTriggerMode
+    {
+        Edge = 0b0,
+        Level = 0b1
+    };
+
+    enum APICDestinationShorthand
+    {
+        NoShorthand = 0b00,
+        Self = 0b01,
+        AllIncludingSelf = 0b10,
+        AllExcludingSelf = 0b11
+    };
+
+    enum LVTTimerDivide
+    {
+        DivideBy2 = 0b000,
+        DivideBy4 = 0b001,
+        DivideBy8 = 0b010,
+        DivideBy16 = 0b011,
+        DivideBy32 = 0b100,
+        DivideBy64 = 0b101,
+        DivideBy128 = 0b110,
+        DivideBy1 = 0b111
+    };
+
+    enum LVTTimerMask
+    {
+        Unmasked = 0b0,
+        Masked = 0b1
+    };
+
+    enum LVTTimerMode
+    {
+        OneShot = 0b00,
+        Periodic = 0b01,
+        TSCDeadline = 0b10
+    };
+
+    typedef union
+    {
+        struct
+        {
+            /** @brief Interrupt Vector */
+            uint64_t Vector : 8;
+            /** @brief Reserved */
+            uint64_t Reserved0 : 4;
+            /**
+             * @brief Delivery Status
+             *
+             * 0: Idle
+             * 1: Send Pending
+             */
+            uint64_t DeliveryStatus : 1;
+            /** @brief Reserved */
+            uint64_t Reserved1 : 3;
+            /**
+             * @brief Mask
+             *
+             * 0: Not masked
+             * 1: Masked
+             */
+            uint64_t Mask : 1;
+            /** @brief Timer Mode
+             *
+             * 0: One-shot
+             * 1: Periodic
+             * 2: TSC-Deadline
+             */
+            uint64_t TimerMode : 1;
+            /** @brief Reserved */
+            uint64_t Reserved2 : 14;
+        };
+        uint64_t raw;
+    } __attribute__((packed)) LVTTimer;
+
+    typedef union
+    {
+        struct
+        {
+            /** @brief Spurious Vector */
+            uint64_t Vector : 8;
+            /** @brief Enable or disable APIC software */
+            uint64_t Software : 1;
+            /** @brief Focus Processor Checking */
+            uint64_t FocusProcessorChecking : 1;
+            /** @brief Reserved */
+            uint64_t Reserved : 2;
+            /** @brief Disable EOI Broadcast */
+            uint64_t DisableEOIBroadcast : 1;
+            /** @brief Reserved */
+            uint64_t Reserved1 : 19;
+        };
+        uint64_t raw;
+    } __attribute__((packed)) Spurious;
+
+    typedef union
+    {
+        struct
+        {
+            /** @brief Interrupt Vector */
+            uint64_t Vector : 8;
+            /** @brief Delivery Mode */
+            uint64_t DeliveryMode : 3;
+            /** @brief Destination Mode
+             *
+             * 0: Physical
+             * 1: Logical
+             */
+            uint64_t DestinationMode : 1;
+            /** @brief Delivery Status
+             *
+             * @note Reserved when in x2APIC mode
+             */
+            uint64_t DeliveryStatus : 1;
+            /** @brief Reserved */
+            uint64_t Reserved0 : 1;
+            /** @brief Level
+             *
+             * 0: Deassert
+             * 1: Assert
+             */
+            uint64_t Level : 1;
+            /** @brief Trigger Mode
+             *
+             * 0: Edge
+             * 1: Level
+             */
+            uint64_t TriggerMode : 1;
+            /** @brief Reserved */
+            uint64_t Reserved1 : 2;
+            /** @brief Destination Shorthand
+             *
+             * 0: No shorthand
+             * 1: Self
+             * 2: All including self
+             * 3: All excluding self
+             */
+            uint64_t DestinationShorthand : 2;
+            /** @brief Reserved */
+            uint64_t Reserved2 : 12;
+        };
+        uint64_t raw;
+    } __attribute__((packed)) InterruptCommandRegisterLow;
+
+    typedef union
+    {
+        struct
+        {
+            /** @brief Reserved */
+            uint64_t Reserved0 : 24;
+            /** @brief Destination */
+            uint64_t Destination : 8;
+        };
+        uint64_t raw;
+    } __attribute__((packed)) InterruptCommandRegisterHigh;
+
+    typedef union
+    {
+        struct
+        {
+            /** @brief Interrupt Vector */
+            uint64_t Vector : 8;
+            /** @brief Delivery Mode */
+            uint64_t DeliveryMode : 3;
+            /** @brief Destination Mode
+             *
+             * 0: Physical
+             * 1: Logical
+             */
+            uint64_t DestinationMode : 1;
+            /** @brief Delivery Status */
+            uint64_t DeliveryStatus : 1;
+            /** @brief Interrupt Input Pin Polarity
+             *
+             * 0: Active High
+             * 1: Active Low
+             */
+            uint64_t Polarity : 1;
+            /** @brief Remote IRR */
+            uint64_t RemoteIRR : 1;
+            /** @brief Trigger Mode
+             *
+             * 0: Edge
+             * 1: Level
+             */
+            uint64_t TriggerMode : 1;
+            /** @brief Mask */
+            uint64_t Mask : 1;
+            /** @brief Reserved */
+            uint64_t Reserved0 : 15;
+            /** @brief Reserved */
+            uint64_t Reserved1 : 24;
+            /** @brief Destination */
+            uint64_t DestinationID : 8;
+        };
+        struct
+        {
+            uint64_t Low;
+            uint64_t High;
+        } split;
+        uint64_t raw;
+    } __attribute__((packed)) IOAPICRedirectEntry;
+
+    typedef union
+    {
+        struct
+        {
+            uint64_t Version : 8;
+            uint64_t Reserved : 8;
+            uint64_t MaximumRedirectionEntry : 8;
+            uint64_t Reserved2 : 8;
+        };
+        uint64_t raw;
+    } __attribute__((packed)) IOAPICVersion;
+
+    class APIC
+    {
+    private:
+        bool x2APICSupported = false;
+        uint64_t APICBaseAddress = 0;
+
+    public:
+        uint32_t Read(uint32_t Register);
+        void Write(uint32_t Register, uint32_t Value);
+        void IOWrite(uint64_t Base, uint32_t Register, uint32_t Value);
+        uint32_t IORead(uint64_t Base, uint32_t Register);
+        void EOI();
+        void RedirectIRQs(int CPU = 0);
+        void WaitForIPI();
+        void IPI(uint8_t CPU, InterruptCommandRegisterLow icr);
+        void SendInitIPI(uint8_t CPU);
+        void SendStartupIPI(uint8_t CPU, uint64_t StartupAddress);
+        uint32_t IOGetMaxRedirect(uint32_t APICID);
+        void RawRedirectIRQ(uint8_t Vector, uint32_t GSI, uint16_t Flags, int CPU, int Status);
+        void RedirectIRQ(int CPU, uint8_t IRQ, int Status);
+        APIC(int Core);
+        ~APIC();
+    };
+
+    class Timer : public Interrupts::Handler
+    {
+    private:
+        APIC *lapic;
+        uint64_t Ticks = 0;
+        void OnInterruptReceived(CPU::x64::TrapFrame *Frame);
+
+    public:
+        uint64_t GetTicks() { return Ticks; }
+        void OneShot(uint32_t Vector, uint64_t Miliseconds);
+        Timer(APIC *apic);
+        ~Timer();
+    };
+}
+
+#endif // !__FENNIX_KERNEL_APIC_H__

Kernel/Architecture/amd64/cpu/gdt.hpp

@@ -0,0 +1,146 @@
+#ifndef __FENNIX_KERNEL_GDT_H__
+#define __FENNIX_KERNEL_GDT_H__
+
+#include <types.h>
+
+namespace GlobalDescriptorTable
+{
+    /** @brief The GDT Access Table
+     * @details For more information, see https://wiki.osdev.org/Global_Descriptor_Table
+     */
+    union GlobalDescriptorTableAccess
+    {
+        struct
+        {
+            /** @brief Access bit.
+             * @note The CPU sets this bit to 1 when the segment is accessed.
+             */
+            uint8_t A : 1;
+
+            /** @brief Readable bit for code segments, writable bit for data segments.
+             * @details For code segments, this bit must be 1 for the segment to be readable.
+             * @details For data segments, this bit must be 1 for the segment to be writable.
+             */
+            uint8_t RW : 1;
+
+            /** @brief Direction bit for data segments, conforming bit for code segments.
+             * @details For data segments, this bit must be 1 for the segment to grow up (higher addresses).
+             * @details For code segments, this bit must be 1 for code in the segment to be able to be executed from an equal or lower privilege level.
+             */
+            uint8_t DC : 1;
+
+            /** @brief Executable bit.
+             * @details This bit must be 1 for code-segment descriptors.
+             * @details This bit must be 0 for data-segment and system descriptors.
+             */
+            uint8_t E : 1;
+
+            /** @brief Descriptor type.
+             * @details This bit must be 0 for system descriptors.
+             * @details This bit must be 1 for code or data segment descriptor.
+             */
+            uint8_t S : 1;
+
+            /** @brief Descriptor privilege level.
+             * @details This field determines the privilege level of the segment.
+             * @details 0 = kernel mode, 3 = user mode.
+             */
+            uint8_t DPL : 2;
+
+            /** @brief Present bit.
+             * @details This bit must be 1 for all valid descriptors.
+             */
+            uint8_t P : 1;
+        } __attribute__((packed));
+        uint8_t Raw;
+    };
+
+    union GlobalDescriptorTableFlags
+    {
+        // TODO: Add more flags.
+        struct
+        {
+            /** @brief Unknown. */
+            uint8_t Unknown : 5;
+
+            /** @brief Long mode.
+             * @details If the long mode bit is clear, the segment is in 32-bit protected mode.
+             * @details If the long mode bit is set, the segment is in 64-bit long mode.
+             */
+            uint8_t L : 1;
+        } __attribute__((packed));
+        uint8_t Raw;
+    };
+
+    typedef struct _TaskStateSegmentEntry
+    {
+        /* LOW */
+        uint16_t Length;
+        uint16_t BaseLow;
+        uint8_t BaseMiddle;
+        GlobalDescriptorTableAccess Flags;
+        uint8_t Granularity;
+        uint8_t BaseHigh;
+        /* HIGH */
+        uint32_t BaseUpper;
+        uint32_t Reserved;
+    } __attribute__((packed)) TaskStateSegmentEntry;
+
+    typedef struct _TaskStateSegment
+    {
+        uint32_t Reserved0 __attribute__((aligned(16)));
+        uint64_t StackPointer[3];
+        uint64_t Reserved1;
+        uint64_t InterruptStackTable[7];
+        uint64_t Reserved2;
+        uint16_t Reserved3;
+        uint16_t IOMapBaseAddressOffset;
+    } __attribute__((packed)) TaskStateSegment;
+
+    typedef struct _GlobalDescriptorTableEntry
+    {
+        /** @brief Length */
+        uint16_t Length;
+        /** @brief Low Base */
+        uint16_t BaseLow;
+        /** @brief Middle Base */
+        uint8_t BaseMiddle;
+        /** @brief Access */
+        GlobalDescriptorTableAccess Access;
+        /** @brief Flags */
+        GlobalDescriptorTableFlags Flags;
+        /** @brief High Base */
+        uint8_t BaseHigh;
+    } __attribute__((packed)) GlobalDescriptorTableEntry;
+
+    typedef struct _GlobalDescriptorTableEntries
+    {
+        GlobalDescriptorTableEntry Null;
+        GlobalDescriptorTableEntry Code;
+        GlobalDescriptorTableEntry Data;
+        GlobalDescriptorTableEntry UserData;
+        GlobalDescriptorTableEntry UserCode;
+        TaskStateSegmentEntry TaskStateSegment;
+    } __attribute__((packed)) GlobalDescriptorTableEntries;
+
+    typedef struct _GlobalDescriptorTableDescriptor
+    {
+        /** @brief GDT entries length */
+        uint16_t Length;
+        /** @brief GDT entries address */
+        GlobalDescriptorTableEntries *Entries;
+    } __attribute__((packed)) GlobalDescriptorTableDescriptor;
+
+    extern void *CPUStackPointer[];
+    extern TaskStateSegment tss[];
+    void Init(int Core);
+    void SetKernelStack(void *Stack);
+}
+
+#define GDT_KERNEL_CODE offsetof(GlobalDescriptorTable::GlobalDescriptorTableEntries, Code)
+#define GDT_KERNEL_DATA offsetof(GlobalDescriptorTable::GlobalDescriptorTableEntries, Data)
+#define GDT_USER_CODE (offsetof(GlobalDescriptorTable::GlobalDescriptorTableEntries, UserCode) | 3)
+#define GDT_USER_DATA (offsetof(GlobalDescriptorTable::GlobalDescriptorTableEntries, UserData) | 3)
+#define GDT_TSS (offsetof(GlobalDescriptorTable::GlobalDescriptorTableEntries, TaskStateSegment) | 3)
+
+#endif // !__FENNIX_KERNEL_GDT_H__

Kernel/Architecture/amd64/cpu/idt.hpp

@@ -0,0 +1,46 @@
+#ifndef __FENNIX_KERNEL_IDT_H__
+#define __FENNIX_KERNEL_IDT_H__
+
+#include <types.h>
+
+namespace InterruptDescriptorTable
+{
+    typedef enum _InterruptDescriptorTableFlags
+    {
+        FlagGate_TASK = 0b101,
+        FlagGate_16BIT_INT = 0b110,
+        FlagGate_16BIT_TRAP = 0b111,
+        FlagGate_32BIT_INT = 0b1110,
+        FlagGate_32BIT_TRAP = 0b1111,
+        FlagGate_RING0 = 0b0,
+        FlagGate_RING1 = 0b1,
+        FlagGate_RING2 = 0b10,
+        FlagGate_RING3 = 0b11,
+        FlagGate_PRESENT = 0b1, // Not sure if this is correct.
+    } InterruptDescriptorTableFlags;
+
+    typedef struct _InterruptDescriptorTableEntry
+    {
+        uint64_t BaseLow : 16;
+        uint64_t SegmentSelector : 16;
+        uint64_t InterruptStackTable : 3;
+        uint64_t Reserved1 : 5;
+        InterruptDescriptorTableFlags Flags : 4;
+        uint64_t Reserved2 : 1;
+        uint64_t Ring : 2;
+        uint64_t Present : 1;
+        uint64_t BaseHigh : 48;
+        uint64_t Reserved3 : 32;
+    } __attribute__((packed)) InterruptDescriptorTableEntry;
+
+    typedef struct _InterruptDescriptorTableDescriptor
+    {
+        uint16_t Length;
+        InterruptDescriptorTableEntry *Entries;
+    } __attribute__((packed)) InterruptDescriptorTableDescriptor;
+
+    void SetEntry(uint8_t Index, void (*Base)(), InterruptDescriptorTableFlags Attribute, uint8_t InterruptStackTable, InterruptDescriptorTableFlags Ring, uint16_t SegmentSelector);
+    void Init(int Core);
+}
+
+#endif // !__FENNIX_KERNEL_IDT_H__

Kernel/Architecture/amd64/linker.ld

@@ -0,0 +1,80 @@
+OUTPUT_FORMAT(elf64-x86-64)
+OUTPUT_ARCH(i386:x86-64)
+
+KERNEL_LMA = 16M;
+KERNEL_VMA = 0xFFFFFFFF80000000;
+
+ENTRY(_start)
+
+SECTIONS
+{
+    . = KERNEL_LMA;
+
+    .multiboot2 :
+    {
+        *(.multiboot2 .multiboot2.*)
+    }
+
+    .bootstrap :
+    {
+        *(.bootstrap.text .bootstrap.text.*)
+        *(.bootstrap.data .bootstrap.data.*)
+        *(.bootstrap.rodata .bootstrap.rodata.*)
+        *(.bootstrap.bss .bootstrap.bss.*)
+    }
+
+    . += KERNEL_VMA;
+
+    _kernel_start = .;
+    .text : AT(ADDR(.text) - KERNEL_VMA)
+    {
+        *(.text .text.*)
+    }
+    _kernel_text_end = ALIGN(CONSTANT(MAXPAGESIZE));
+    . += CONSTANT(MAXPAGESIZE);
+
+    .data : AT(ADDR(.data) - KERNEL_VMA)
+    {
+        *(.data .data.*)
+    }
+    _kernel_data_end = ALIGN(CONSTANT(MAXPAGESIZE));
+    . += CONSTANT(MAXPAGESIZE);
+
+    .rodata : AT(ADDR(.rodata) - KERNEL_VMA)
+    {
+        *(.rodata .rodata.*)
+    }
+    _kernel_rodata_end = ALIGN(CONSTANT(MAXPAGESIZE));
+    . += CONSTANT(MAXPAGESIZE);
+
+    .init_array : AT(ADDR(.init_array) - KERNEL_VMA)
+    {
+        PROVIDE_HIDDEN(__init_array_start = .);
+        KEEP(*(.init_array .ctors))
+        KEEP(*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
+        PROVIDE_HIDDEN (__init_array_end = .);
+    }
+
+    .fini_array : AT(ADDR(.fini_array) - KERNEL_VMA)
+    {
+        PROVIDE_HIDDEN(__fini_array_start = .);
+        KEEP(*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
+        KEEP(*(.fini_array .dtors))
+        PROVIDE_HIDDEN (__fini_array_end = .);
+    }
+    . += CONSTANT(MAXPAGESIZE);
+
+    .bss : AT(ADDR(.bss) - KERNEL_VMA)
+    {
+        *(COMMON)
+        *(.bss .bss.*)
+    }
+    . += CONSTANT(MAXPAGESIZE);
+    _kernel_end = ALIGN(CONSTANT(MAXPAGESIZE));
+
+    /DISCARD/ :
+    {
+        *(.comment*)
+        *(.note*)
+    }
+}

Kernel/Architecture/amd64/runtime/crt0.c

@@ -0,0 +1,15 @@
+// #include <types.h>
+
+// #include <debug.h>
+
+// int Entry(void *Info);
+
+// void _start(void *Raw)
+// {
+//     error("Todo");
+//     while (1)
+//         asmv("hlt");
+//     Entry(NULL);
+//     return;
+// }
+// C stuff

Kernel/Architecture/amd64/runtime/crt1.c

@@ -0,0 +1,15 @@
+#include <types.h>
+
+#include <debug.h>
+
+int Entry(void *Info);
+
+void _start(void *Raw)
+{
+    UNUSED(Raw);
+    error("ERROR! INVALID BOOT PROTOCOL!");
+    while (1)
+        asmv("hlt");
+    Entry(NULL);
+    return;
+}

Kernel/Architecture/amd64/runtime/crtbegin.c

@@ -0,0 +1 @@
+// C++ constructor/destructor stuff

Kernel/Architecture/amd64/runtime/crtend.c

@@ -0,0 +1 @@
+// C++ constructor/destructor stuff

Kernel/Architecture/amd64/runtime/crti.S

@@ -0,0 +1,13 @@
+.section .init
+.global _init
+.type _init, @function
+_init:
+	push %rbp
+	movq %rsp, %rbp
+
+.section .fini
+.global _fini
+.type _fini, @function
+_fini:
+	push %rbp
+	movq %rsp, %rbp