fix: gate AVX enable on XSAVE support and set CR4.OSXSAVE first

XGETBV/XSETBV require CR4 bit 18 (OSXSAVE) to be set before execution,
otherwise the CPU raises #UD (invalid opcode). Hyper-V enforces this
strictly; VirtualBox was silently tolerating it.

- Check both AVX and XSAVE CPUID flags before attempting AVX enable
- Set CR4.OSXSAVE (bit 18) before issuing XGETBV/XSETBV
- If XSAVE is not exposed by the hypervisor, AVX enable is skipped
  gracefully instead of faulting

.gitignore

@@ -11,3 +11,7 @@
 /*.img
 src/include/asuro.pas
 localenv.json
+/lvgl/
+dockerout.txt
+AGENTS.md
+*.log

Dockerfile

@@ -5,7 +5,7 @@ VOLUME ["/code"]
 ENV DEBIAN_FRONTEND=noninteractive
 RUN dpkg --add-architecture i386
 RUN apt-get update && apt-get install -y \
-	curl dos2unix wget git make nasm binutils:i386 xorriso grub-pc-bin && \
+	curl dos2unix wget git make nasm binutils xorriso grub-pc-bin gcc gcc-multilib && \
 	apt-get clean my room
 
 SHELL ["/bin/bash", "-c"]

compile.sh

@@ -7,7 +7,7 @@ echo "Asuro Compilation"
 echo " "
 
 #Compile Stub.asm
-rm lib/*
+rm -f lib/*
 
 runOrFail() {
 	local binary=$1
@@ -23,6 +23,7 @@ runOrFail() {
 declare -a run_steps=(
 	"compile_stub.sh" "Failed to compile stub!"
 	"compile_vergen.sh" "Versions failed to compile"
+	"compile_lvgl.sh" "Failed to compile LVGL!"
 	"compile_sources.sh" "Failed to compile FPC Sources!"
 	"compile_link.sh" "Failed linking!"
 	"compile_isogen.sh" "Failed to create ISO!"

compile_link.sh

@@ -14,4 +14,9 @@ done;
 objstring=lib/stub.o" "$objstring 
 echo "Object Files: "$objstring
 echo " "
-ld -m elf_i386 -s --gc-sections -Tlinker.script -o bin/kernel.bin $objstring
+
+# Find libgcc for i386 (needed by LVGL compiled with gcc)
+LIBGCC=$(gcc -m32 -print-libgcc-file-name)
+echo "libgcc: ${LIBGCC}"
+
+ld -m elf_i386 -s --gc-sections -Tlinker.script -o bin/kernel.bin $objstring --start-group lib/liblvgl.a ${LIBGCC} --end-group

compile_lvgl.sh

@@ -0,0 +1,117 @@
+#!/usr/bin/env bash
+# compile_lvgl.sh — Download LVGL v9.2 source and compile into lib/liblvgl.a
+# Clone & compile in /tmp (fast container-local fs).
+# Copy source + objects to /lvgl (host mount) for debugging.
+set -e
+
+LVGL_VERSION="v9.2.2"
+LVGL_REPO="https://github.com/lvgl/lvgl.git"
+LVGL_DIR="/tmp/lvgl"
+OBJ_DIR="/tmp/lvgl_obj"
+CONF_DIR="$(pwd)/lvglh"
+OUT_DIR="$(pwd)/lib"
+
+CC="gcc"
+CFLAGS="-m32 -march=i686 -ffreestanding \
+    -fno-builtin -fno-stack-protector -fno-pic -fno-pie \
+    -O2 -Wall -Wno-unused-function -Wno-unused-variable \
+    -I${CONF_DIR} \
+    -I${LVGL_DIR} \
+    -I${LVGL_DIR}/.. \
+    -DLV_CONF_INCLUDE_SIMPLE"
+
+echo " "
+echo "======================="
+echo " "
+echo "Compiling LVGL..."
+echo " "
+
+# Clone LVGL into /tmp (container-local)
+rm -rf "$LVGL_DIR"
+echo "Downloading LVGL ${LVGL_VERSION}..."
+git clone --depth 1 --branch "${LVGL_VERSION}" "${LVGL_REPO}" "${LVGL_DIR}" 2>&1
+echo "Download complete."
+
+# Gather all LVGL .c source files (core library only, no demos/examples)
+SOURCES=$(find "${LVGL_DIR}/src" -name '*.c' -not -path '*/test/*')
+TOTAL=$(echo "$SOURCES" | wc -l)
+echo "Found ${TOTAL} LVGL source files."
+
+# Compile each .c file to .o (container-local)
+rm -rf "$OBJ_DIR"
+mkdir -p "$OBJ_DIR"
+
+COUNT=0
+ERRORS=0
+for src in $SOURCES; do
+    COUNT=$((COUNT + 1))
+    rel="${src#${LVGL_DIR}/src/}"
+    obj_path="${OBJ_DIR}/${rel%.c}.o"
+    mkdir -p "$(dirname "$obj_path")"
+
+    if ! $CC $CFLAGS -c "$src" -o "$obj_path" 2>&1; then
+        echo "FAILED: $rel"
+        ERRORS=$((ERRORS + 1))
+    fi
+
+    if [ $((COUNT % 50)) -eq 0 ]; then
+        echo "  Compiled ${COUNT}/${TOTAL}..."
+    fi
+done
+
+echo "Compiled ${COUNT} files (${ERRORS} errors)."
+
+if [ "$ERRORS" -ne 0 ]; then
+    echo "LVGL compilation FAILED with ${ERRORS} errors."
+    exit 1
+fi
+
+# Archive into static library
+OBJECTS=$(find "$OBJ_DIR" -name '*.o')
+ar rcs "${OUT_DIR}/liblvgl.a" $OBJECTS
+echo "Created ${OUT_DIR}/liblvgl.a"
+
+# Compile custom LVGL extension files from lvglh/
+LVGLH_SOURCES=$(find "${CONF_DIR}" -name '*.c' 2>/dev/null || true)
+if [ -n "$LVGLH_SOURCES" ]; then
+    echo " "
+    echo "Compiling custom LVGL files from lvglh/..."
+    LVGLH_OBJ_DIR="/tmp/lvglh_obj"
+    rm -rf "$LVGLH_OBJ_DIR"
+    mkdir -p "$LVGLH_OBJ_DIR"
+    HCOUNT=0
+    HERRORS=0
+    for src in $LVGLH_SOURCES; do
+        HCOUNT=$((HCOUNT + 1))
+        rel="${src#${CONF_DIR}/}"
+        obj_path="${LVGLH_OBJ_DIR}/${rel%.c}.o"
+        mkdir -p "$(dirname "$obj_path")"
+        echo "  [lvglh] $rel"
+        if ! $CC $CFLAGS -c "$src" -o "$obj_path" 2>&1; then
+            echo "  FAILED: $rel"
+            HERRORS=$((HERRORS + 1))
+        fi
+    done
+    echo "Compiled ${HCOUNT} custom files (${HERRORS} errors)."
+    if [ "$HERRORS" -ne 0 ]; then
+        echo "Custom LVGL compilation FAILED."
+        exit 1
+    fi
+    # Append custom objects into the existing archive
+    HOBJECTS=$(find "$LVGLH_OBJ_DIR" -name '*.o')
+    ar rcs "${OUT_DIR}/liblvgl.a" $HOBJECTS
+    echo "Updated ${OUT_DIR}/liblvgl.a with custom objects."
+else
+    echo "No custom LVGL files in lvglh/."
+fi
+
+# Copy source + objects to /lvgl host mount for debugging
+echo "Copying LVGL source and objects to host mount..."
+rm -rf /lvgl/* /lvgl/.[!.]* /lvgl/..?* 2>/dev/null || true
+cp -a "$LVGL_DIR/src" /lvgl/src
+cp -a "$OBJ_DIR" /lvgl/obj
+echo "Done."
+
+echo " "
+echo "LVGL compilation complete."
+echo " "

compile_sources.sh

@@ -4,4 +4,4 @@ echo "======================="
 echo " "
 echo "Compiling FPC Sources..."
 echo " "
-fpc -Aelf -gw -g -gl -n -vlewn -O3 -OpPENTIUM3 -Si -Sc -Sg -Xd -CX -XXs -CfSSE -CfSSE2 -Rintel -Pi386 -Tlinux -FElib/ -Fusrc/* -Fusrc/driver/* -Fusrc/driver/net/* src/kernel.pas
+fpc -Aelf -gw -g -gl -n -v0ew -O3 -OpPENTIUM3 -Si -Sc -Sg -Xd -CX -XXs -CfSSE -CfSSE2 -Rintel -Pi386 -Tlinux -FElib/ -Fusrc/* -Fusrc/driver/* -Fusrc/driver/net/* src/kernel.pas

docker-compose.yml

@@ -3,3 +3,4 @@ services:
     build: .
     volumes:
       - .:/code
+      - ./lvgl:/lvgl

src/console.pas

@@ -1776,14 +1776,15 @@ var
    fb: puint32;
 
 Begin
+     Ready:= False;
      fb:= puint32(uint32(multibootinfo^.framebuffer_addr));
      Console_Properties.Width:= multibootinfo^.framebuffer_width;
      Console_Properties.Height:= multibootinfo^.framebuffer_height;
      Console_Properties.BitsPerPixel:= multibootinfo^.framebuffer_bpp;
      Console_Properties.MAX_CELL_X:= (Console_Properties.Width div 8) - 1;
      Console_Properties.MAX_CELL_Y:= (Console_Properties.Height div 16) - 1;
-     If Console_Properties.BitsPerPixel <> 16 then while true do begin
+     If Console_Properties.BitsPerPixel <> 16 then begin
-
+        exit;
      end;
      kpalloc(uint32(fb));
      keyboard.hook(@keyhook);

src/cpu.pas

@@ -291,6 +291,35 @@ begin
     end;
 end;
 
+procedure enableAVX();
+begin
+    if CPUID.Capabilities1^.AVX and CPUID.Capabilities1^.XSAVE then begin
+        { Enable OSXSAVE in CR4 (bit 18) - required before XGETBV/XSETBV }
+        asm
+            MOV EAX, CR4
+            OR EAX, (1 shl 18)
+            MOV CR4, EAX
+        end;
+        { Set XCR0 bits: x87 (0) + SSE (1) + AVX (2) }
+        asm
+            PUSH EAX
+            PUSH ECX
+            PUSH EDX
+            XOR ECX, ECX
+            db $0F
+            db $01
+            db $D0
+            OR EAX, 7
+            db $0F
+            db $01
+            db $D1
+            POP EDX
+            POP ECX
+            POP EAX
+        end;
+    end;
+end;
+
 procedure init();
 begin
     terminal.registerCommand('CPU', @Terminal_Command_CPU, 'CPU Info.');
@@ -300,6 +329,7 @@ begin
     getCPUCapabilities;
     getCPUClockSpeed;
     enableSSE;
+    enableAVX;
 end;
 
 end.

src/driver/video/doublebuffer.pas

@@ -0,0 +1,99 @@
+//  Copyright 2021 Kieron Morris
+//
+//  Licensed under the Apache License, Version 2.0 (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//  http://www.apache.org/licenses/LICENSE-2.0
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+
+{ 
+	Driver->Video->Doublebuffer - Implements a very basic double buffer, tested with VESA drivers.
+	
+	@author(Kieron Morris <[email protected]>)
+}
+unit doublebuffer;
+
+interface
+
+uses
+    lmemorymanager, tracer, videotypes, serial, util;
+
+//Init the driver, and register with the video interface in a state ready for execution.
+procedure init(Register : FRegisterDriver);
+
+implementation
+
+function allocateBackBuffer(Width : uint32; Height : uint32; BitsPerPixel : uint8) : uint64;
+begin
+    tracer.push_trace('doublebuffer.allocateBackBuffer.enter');
+    allocateBackBuffer:= uint64(klalloc((Width * Height * BitsPerPixel) div 8));
+    tracer.push_trace('doublebuffer.allocateBackBuffer.exit');
+end;
+
+procedure initBackBuffer(VInterface : PVideoInterface; Width : uint32; Height : uint32; BitsPerPixel : uint8);
+begin
+    tracer.push_trace('doublebuffer.initBackBuffer.enter');
+    if not(VInterface^.BackBuffer.Initialized) then begin
+        VInterface^.BackBuffer.Location:= allocateBackBuffer(Width, Height, BitsPerPixel);
+        if (VInterface^.BackBuffer.Location <> 0) then begin
+            VInterface^.BackBuffer.Width:= Width;
+            VInterface^.BackBuffer.Height:= Height;
+            VInterface^.BackBuffer.BitsPerPixel:= BitsPerPixel;
+            VInterface^.BackBuffer.Initialized:= True;
+        end;
+    end;
+    tracer.push_trace('doublebuffer.initBackBuffer.exit');
+end;
+
+procedure Flush(FrontBuffer : PVideoBuffer; BackBuffer : PVideoBuffer);
+var
+    idx : uint32;
+    Back,Front : uint32;
+    BufferSize : uint32;
+
+const
+    //COPY_WIDTH = 64; //Use this for 64bit copies
+    COPY_WIDTH = 128; //Use this for SSE copies
+
+begin
+    //tracer.push_trace('doublebuffer.Flush.enter');
+    if not(BackBuffer^.Initialized) then exit;
+    if ((FrontBuffer^.Width > BackBuffer^.Width) or (FrontBuffer^.Height > BackBuffer^.Height)) then exit;
+    Back:= BackBuffer^.Location;
+    Front:= FrontBuffer^.Location;
+    BufferSize:= ( ( BackBuffer^.Width * BackBuffer^.Height * BackBuffer^.BitsPerPixel) div COPY_WIDTH ) - 1;
+    for idx:=0 to BufferSize do begin
+        //Front[idx]:= Back[idx];
+        // -- TODO: Get SSE working here for 128bit copies --
+        __SSE_128_memcpy(Back + (idx * 16), Front + (idx * 16));  
+    end;
+    //tracer.push_trace('doublebuffer.Flush.exit');
+end;
+
+function enable(VideoInterface : PVideoInterface) : boolean;
+begin
+    tracer.push_trace('doublebuffer.enable.enter');
+    enable:= false;
+    initBackBuffer(VideoInterface, VideoInterface^.FrontBuffer.Width, VideoInterface^.FrontBuffer.Height, VideoInterface^.FrontBuffer.BitsPerPixel);
+    if VideoInterface^.BackBuffer.Initialized then begin
+        VideoInterface^.DefaultBuffer:= @VideoInterface^.BackBuffer;
+        VideoInterface^.DrawRoutines.Flush:= @Flush;
+        enable:= true;
+    end;
+    tracer.push_trace('doublebuffer.enable.exit');
+end;
+
+procedure init(Register : FRegisterDriver);
+begin
+    tracer.push_trace('doublebuffer.init.enter');
+    Register('BASIC_DOUBLE_BUFFER', @enable);
+    tracer.push_trace('doublebuffer.init.exit');
+end;
+
+end.

src/driver/video/vesa.pas

@@ -0,0 +1,89 @@
+//  Copyright 2021 Kieron Morris
+//
+//  Licensed under the Apache License, Version 2.0 (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//  http://www.apache.org/licenses/LICENSE-2.0
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+
+{ 
+	Driver->Video->VESA - VESA Display Driver.
+	
+	@author(Kieron Morris <kjm@kieronmorris.me>)
+}
+unit vesa;
+
+interface
+
+uses
+    videotypes, tracer, multiboot, lmemorymanager;
+
+//Init the driver, and register with the video interface in a state ready for execution.
+procedure init(Register : FRegisterDriver);
+
+implementation
+
+uses
+    VESA8, VESA16, VESA24, VESA32;
+
+procedure allocateVESAFrameBuffer(Address : uint32; Width : uint32; Height : uint32; BitsPerPixel : uint8);
+var
+    LowerAddress, UpperAddress : uint32;
+    Block : uint32;
+    FrameBufferSize : uint32;
+
+begin
+    tracer.push_trace('VESA.allocateFrameBuffer.enter');
+    FrameBufferSize := (Width * Height * BitsPerPixel) div 8;
+    LowerAddress:= ((Address) SHR 22)-1;
+    UpperAddress:= ((Address + FrameBufferSize) SHR 22)+1;
+    For Block:=LowerAddress to UpperAddress do begin
+        kpalloc(Block SHL 22);
+    end;
+    tracer.push_trace('VESA.allocateFrameBuffer.exit');
+end;
+
+procedure initVESAFrameBuffer(VideoBuffer : PVideoBuffer; Location : uint64; Width : uint32; Height : uint32; BitsPerPixel : uint8; Pitch : uint32);
+begin
+    tracer.push_trace('VESA.initVESAFrameBuffer.enter');
+    if not(VideoBuffer^.Initialized) then begin
+        VideoBuffer^.Location:= Location;
+        VideoBuffer^.BitsPerPixel:= BitsPerPixel;
+        VideoBuffer^.Width:= Width;
+        VideoBuffer^.Height:= Height;
+        allocateVESAFrameBuffer(VideoBuffer^.Location, VideoBuffer^.Width, VideoBuffer^.Height, BitsPerPixel);
+        if VideoBuffer^.Location <> 0 then
+            VideoBuffer^.Initialized:= True;
+    end;
+    tracer.push_trace('VESA.initVESAFrameBuffer.exit');
+end;
+
+function enable(VideoInterface : PVideoInterface) : boolean;
+begin
+    tracer.push_trace('VESA.enable.enter');
+    initVESAFrameBuffer(@VideoInterface^.FrontBuffer, multiboot.multibootinfo^.framebuffer_addr, multiboot.multibootinfo^.framebuffer_width, multiboot.multibootinfo^.framebuffer_height, multiboot.multibootinfo^.framebuffer_bpp, multiboot.multibootinfo^.framebuffer_pitch);
+    case (VideoInterface^.FrontBuffer.BitsPerPixel) of
+        08:VESA8.init(@VideoInterface^.DrawRoutines);
+        16:VESA16.init(@VideoInterface^.DrawRoutines);
+        24:VESA24.init(@VideoInterface^.DrawRoutines);
+        32:VESA32.init(@VideoInterface^.DrawRoutines);
+    end;
+    enable:= VideoInterface^.FrontBuffer.Initialized;  
+    tracer.push_trace('VESA.enable.exit');
+end;
+
+procedure init(Register : FRegisterDriver);
+begin
+    tracer.push_trace('VESA.init.enter');
+    if Register <> nil then
+        Register('VESA', @enable);   
+    tracer.push_trace('VESA.init.exit');
+end;
+
+end.

src/driver/video/vesa16.pas

@@ -0,0 +1,43 @@
+//  Copyright 2021 Kieron Morris
+//
+//  Licensed under the Apache License, Version 2.0 (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//  http://www.apache.org/licenses/LICENSE-2.0
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+
+{ 
+	Driver->Video->VESA16 - Implementation of VESA 16bpp draw routines for the VESA Driver.
+	
+	@author(Kieron Morris <kjm@kieronmorris.me>)
+}
+unit vesa16;
+
+interface
+
+uses
+    videotypes, vesa, tracer, color;
+
+//Init the draw routines by providing what we support through the DrawRoutines struct.
+procedure init(DrawRoutines : PDrawRoutines);
+
+implementation
+
+procedure DrawPixel(Buffer : PVideoBuffer; X : uint32; Y : uint32; Pixel : TRGB32);
+begin
+
+end;
+
+procedure init(DrawRoutines : PDrawRoutines);
+begin
+    tracer.push_trace('vesa16.init.enter');   
+    tracer.push_trace('vesa16.init.exit');
+end;
+
+end.

src/driver/video/vesa24.pas

@@ -0,0 +1,43 @@
+//  Copyright 2021 Kieron Morris
+//
+//  Licensed under the Apache License, Version 2.0 (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//  http://www.apache.org/licenses/LICENSE-2.0
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+
+{ 
+	Driver->Video->VESA24 - Implementation of VESA 24bpp draw routines for the VESA Driver.
+	
+	@author(Kieron Morris <kjm@kieronmorris.me>)
+}
+unit vesa24;
+
+interface
+
+uses
+    videotypes, vesa, tracer, color;
+
+//Init the draw routines by providing what we support through the DrawRoutines struct.
+procedure init(DrawRoutines : PDrawRoutines);
+
+implementation
+
+procedure DrawPixel(Buffer : PVideoBuffer; X : uint32; Y : uint32; Pixel : TRGB32);
+begin
+
+end;
+
+procedure init(DrawRoutines : PDrawRoutines);
+begin
+	tracer.push_trace('vesa24.init.enter');
+	tracer.push_trace('vesa24.init.exit');
+end;
+
+end.

src/driver/video/vesa32.pas

@@ -0,0 +1,52 @@
+//  Copyright 2021 Kieron Morris
+//
+//  Licensed under the Apache License, Version 2.0 (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//  http://www.apache.org/licenses/LICENSE-2.0
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+
+{ 
+	Driver->Video->VESA32 - Implementation of VESA 32bpp draw routines for the VESA Driver.
+	
+	@author(Kieron Morris <kjm@kieronmorris.me>)
+}
+unit vesa32;
+
+interface
+
+uses
+    videotypes, vesa, tracer, color;
+
+//Init the draw routines by providing what we support through the DrawRoutines struct.
+procedure init(DrawRoutines : PDrawRoutines);
+
+implementation
+
+procedure DrawPixel(Buffer : PVideoBuffer; X : uint32; Y : uint32; Pixel : TRGB32);
+var
+    Location : PuInt32;
+    LocationIndex : Uint32;
+
+begin
+    //tracer.push_trace('vesa32.DrawPixel.enter');
+    Location:= Puint32(Buffer^.Location);
+    LocationIndex:= (Y * Buffer^.Width) + X;
+    Location[LocationIndex]:= uint32(Pixel);
+    //tracer.push_trace('vesa32.DrawPixel.exit');
+end;
+
+procedure init(DrawRoutines : PDrawRoutines);
+begin
+    tracer.push_trace('vesa32.init.enter');
+    DrawRoutines^.DrawPixel:= @DrawPixel;
+    tracer.push_trace('vesa32.init.exit');
+end;
+
+end.