Rebase: Fixed accidentally removed unit tests.

- Add SHA-1 hashing implementation with Init/Update/Final API and inline test in kernel,
  following the same interface as MD5 & the fpc rtl.

.drone.yml

@@ -50,3 +50,17 @@ steps:
       - |
         curl -X PUT https://gitea.spexeah.com/api/packages/Spexeah/generic/asuro-iso/latest/Asuro.iso \
         -H "Authorization: token $GITEA_TOKEN" --upload-file "Asuro-$(git rev-parse --short HEAD).iso"
+
+  - name: msg status
+    image: appleboy/drone-discord
+    failure: ignore
+    depends_on:
+      - compile
+    when:
+      status: [success, failure, changed]
+    settings:
+      webhook_id:
+        from_secret: discord_webhook_id
+      webhook_token:
+        from_secret: discord_webhook_secret
+      message: "**Asuro Build**\n\n{{#success build.status}}✅ Build successful!\n\n{{else}}❌ Build failed!\n\n{{/success}}Repository: `{{repo.namespace}}/{{repo.name}}`\nBranch: `{{commit.branch}}`\nCommit: `{{commit.sha}}`\nAuthor: `{{commit.author}} <{{commit.email}}>`\n\nGitea Diff: [Link](<{{commit.link}}>)\nDrone Build: [Link](<{{build.link}}>)\n\nMessage: {{commit.message}}"

.gitattributes

@@ -1 +1,8 @@
 * text=auto eol=lf
+lvglh/** linguist-vendored
+lvgl/** linguist-vendored
+.vscode/* linguist-vendored
+lib/* linguist-generated
+release/* linguist-generated
+iso/* linguist-generated
+*.asm linguist-detectable

.gitignore

@@ -11,3 +11,9 @@
 /*.img
 src/include/asuro.pas
 localenv.json
+/lvgl/
+dockerout.txt
+AGENTS.md
+lessons_learnt.md
+*.log
+/doc/*.md

Dockerfile

@@ -5,11 +5,11 @@ 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"]
-ARG FPC_VERSION=2.6.4
+ARG FPC_VERSION=3.2.2
 RUN curl -sL https://sourceforge.net/projects/freepascal/files/Linux/$FPC_VERSION/fpc-$FPC_VERSION.i386-linux.tar/download | tar -xf - && \
 	pushd fpc-$FPC_VERSION.i386-linux && ./install.sh && popd && \
 	rm -rf fpc-$FPC_VERSION.i386-linux

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 +1,132 @@
+#!/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).
+# Cache liblvgl.a on host mount (/code/lvgl/) to skip rebuild.
+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"
+CACHE_DIR="/code/lvgl"
+
+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${LVGL_DIR}/.. \
+    -DLV_CONF_INCLUDE_SIMPLE"
+
+echo " "
+echo "======================="
+echo " "
+echo "Compiling LVGL..."
+echo " "
+
+# If cached liblvgl.a exists on host mount, just copy it and skip everything
+if [ -f "${CACHE_DIR}/liblvgl.a" ]; then
+    echo "Found cached liblvgl.a in ${CACHE_DIR}, copying to ${OUT_DIR}..."
+    cp "${CACHE_DIR}/liblvgl.a" "${OUT_DIR}/liblvgl.a"
+    echo "(Delete lvgl/liblvgl.a to force a full rebuild.)"
+    echo " "
+    echo "LVGL compilation complete (cached)."
+    echo " "
+    exit 0
+fi
+
+# Clone LVGL into /tmp (container-local)
+rm -rf "$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 ${OUT_DIR}/liblvgl.a with custom objects."
+else
+    echo "No custom LVGL files in lvglh/."
+fi
+
+# Cache liblvgl.a and source to host mount for next build
+echo "Caching LVGL to host mount..."
+mkdir -p "$CACHE_DIR"
+rm -rf ${CACHE_DIR}/* ${CACHE_DIR}/.[!.]* ${CACHE_DIR}/..?* 2>/dev/null || true
+cp "${OUT_DIR}/liblvgl.a" "${CACHE_DIR}/liblvgl.a"
+cp -a "$LVGL_DIR/src" "${CACHE_DIR}/src"
+cp -a "$LVGL_DIR"/*.h "${CACHE_DIR}/" 2>/dev/null || true
+cp -a "$OBJ_DIR" "${CACHE_DIR}/obj"
+echo "Done."
+
+echo " "
+echo "LVGL compilation complete."
+echo " "

compile_sources.sh

@@ -4,4 +4,10 @@ echo "======================="
 echo " "
 echo "Compiling FPC Sources..."
 echo " "
-fpc -Aelf -gw -g -gl -n -vlewn -O3 -Op3 -Si -Sc -Sg -Xd -CX -XXs -CfSSE -CfSSE2 -Rintel -Pi386 -Tlinux -FElib/ -Fusrc/* -Fusrc/driver/* -Fusrc/driver/net/* src/kernel.pas
+# Build -Fu flags for all directories under src/ and wasuro/
+FU_PATHS="-Fusrc -Fuwasuro"
+for dir in $(find src wasuro -type d 2>/dev/null); do
+    FU_PATHS="$FU_PATHS -Fu$dir"
+done
+
+fpc -Aelf -gw -g -gl -n -v0e -O3 -OpPENTIUM3 -Si -Sc -Sg -Xd -CX -XXs -CfSSE -CfSSE2 -Rintel -Pi386 -Tlinux -FElib/ $FU_PATHS src/kernel.pas

compile_stub.sh

@@ -5,3 +5,4 @@ echo " "
 echo "Compiling Stub..."
 echo " "
 nasm -f elf src/stub/stub.asm -o lib/stub.o
+nasm -f elf src/stub/splash_tga.asm -o lib/splash_tga.o

doc/flatfs.md

@@ -0,0 +1,32 @@
+#Flat filesystem
+
+A super simple filesystem for asuro. Folders are emulated in filenames.
+
+Starts with disk info sector, sector 0 of volume
+
+---
+#### disk info
+
+jmp2boot        : ubit24;
+OEMName         : array[0..7] of char;
+version         : uint16 // numerical version of filesystem
+sectorCount      : uint16;
+fileCount       : uint16
+signature       : uint32 = 0x0B00B1E5
+
+
+the Rest of the sector is reserved
+
+---
+
+Starting from sector 1 is the file table. Table size is determined by entry size (64) * fileCount
+
+---
+####File entry
+
+name : array[0..59] of char //file name max 60 chars
+fileStart : 16bit // start sector of data
+fileSize : 16bit // data size in sectors
+
+---
+

iso/hello.txt

@@ -0,0 +1 @@
+Hello from the Asuro ISO!

linker.script

@@ -34,4 +34,14 @@ SECTIONS
   }
   end = .; _end = .; __end = .;
   kernel_end = .;
+
+  /DISCARD/ : {
+    *(.init_array*)
+    *(.fini_array*)
+    *(.ctors)
+    *(.dtors)
+    *(.eh_frame*)
+    *(.gcc_except_table*)
+    *(.note.GNU-stack)
+  }
 }

src/contextswitcher.pas

@@ -13,14 +13,117 @@
 //  limitations under the License.
 
 {
-	ContextSwitcher - Switch Process Contexts when preempted.
+    ContextSwitcher - Custom IRQ0 handler for preemptive context switching.
 
-	@author(Kieron Morris <[email protected]>)
+    Replaces the default ISR_32 with a naked assembly stub that saves the
+    interrupted context (PUSHAD + segment regs), calls a Pascal helper to
+    dispatch timer hooks, send EOI, and run the scheduler, then restores
+    the next process context (or idles) via the returned ESP.
+
+    @author(Kieron Morris <[email protected]>)
 }
 unit contextswitcher;
 
+{$ASMMODE intel}
+
 interface
 
-implementation;
+uses
+    idt, isrmanager, processmanager, proctypes, util, tracer;
+
+{ Initialise: overwrite IDT gate 32 with our custom ISR. }
+procedure init;
+
+implementation
+
+{ -----------------------------------------------------------------------
+  do_context_switch_work
+  Pascal helper called from the assembly ISR.  Receives the current ESP
+  (pointing to the GS..EFLAGS save area), dispatches timer hooks, sends
+  EOI, runs the scheduler and returns the ESP for the next context.
+  Uses register calling convention: saved_esp in EAX, result in EAX.
+  ----------------------------------------------------------------------- }
+function do_context_switch_work(saved_esp : uint32) : uint32;
+var
+    next : PProcessContext;
+begin
+    { 1. Save ESP into the current process }
+    processmanager.CurrentProcess^.SavedESP := saved_esp;
+
+    { 2. Dispatch all hooks registered on interrupt 32 (timer hooks).
+         This fires TMR_0_ISR.Main which in turn fires BDA tick,
+         graphics refresh, USB hotplug, etc. }
+    isrmanager.dispatchHooks(32);
+
+    { 3. Send End-Of-Interrupt to the master PIC }
+    outb($20, $20);
+
+    { 4. Pick the next process to run (always returns non-nil; idle as fallback) }
+    next := processmanager.scheduler_pick_next;
+    processmanager.CurrentProcess := next;
+
+    { 5. Return the selected process ESP }
+    do_context_switch_work := next^.SavedESP;
+end;
+
+{ -----------------------------------------------------------------------
+  context_switch_isr
+  Naked assembly ISR that replaces ISR_32 (IRQ0 / PIT timer).
+
+  Stack on entry (pushed by CPU):
+      [ESP+8] EFLAGS
+      [ESP+4] CS
+      [ESP+0] EIP
+
+  We push general-purpose and segment registers, call the Pascal helper,
+  switch ESP to the returned value, pop registers and IRETD.
+  ----------------------------------------------------------------------- }
+procedure context_switch_isr; assembler; nostackframe;
+asm
+    { Save all general-purpose registers (EAX,ECX,EDX,EBX,ESP,EBP,ESI,EDI) }
+    pushad
+
+    { Save segment registers }
+    push ds
+    push es
+    push fs
+    push gs
+
+    { Load kernel data segments }
+    mov ax, $10
+    mov ds, ax
+    mov es, ax
+    mov fs, ax
+    mov gs, ax
+
+    { Call Pascal helper: EAX = current ESP (register calling convention).
+      Returns new ESP in EAX. }
+    mov eax, esp
+    call do_context_switch_work
+    mov esp, eax
+
+    { Restore segment registers }
+    pop gs
+    pop fs
+    pop es
+    pop ds
+
+    { Restore general-purpose registers }
+    popad
+
+    { Return from interrupt }
+    iretd
+end;
+
+{ -----------------------------------------------------------------------
+  init
+  Override IDT gate 32 with our custom ISR.  Must be called AFTER
+  isrmanager.init so that the default gate has been set up first.
+  ----------------------------------------------------------------------- }
+procedure init;
+begin
+    idt.set_gate(32, uint32(@context_switch_isr), $08, ISR_RING_0);
+    tracer.push_trace('contextswitcher.init');
+end;
 
 end.