feature: preemptive process management - implementation progress

Implement a preemptive multitasking system for the Asuro kernel.

Context Switching & Scheduling:
- Custom IRQ0 ISR (contextswitcher.pas) with PUSHAD/POPAD ESP-swap
- Round-robin scheduler with priority-based quantum
- Process table using DList of PProcessContext pointers
- Idle process (PID 0) replaces kernel HLT loop

Process Lifecycle:
- create/kill/terminate/sendMessage API (processmanager.pas)
- Process states: Created, Running, Ready, Suspended, Awaiting,
  Finished, Error
- Parent-child tracking (ParentID, smChildExited notification on reap)
- proc_yield, proc_sleep_ms, proc_await, proc_suspend, proc_exit

Resource Binding & Cleanup:
- Per-process resource list
  (bindResource/unbindResource/unbindAllResources)
- TCP sockets auto-bound to owning process (OwnerPID on TTCPSocket)
- socket_cleanup + auto-unbind in DestroySocket

VTerminal Refactor:
- Multi-instance design (heap-allocated TVTermState per terminal)
- Foreground process with incremental stdout/stderr drain via LVGL timer
- Ctrl+C kills foreground process (killForeground)
- Per-terminal CWD, dir stack, FS builtins (CD/LS/PUSHD/POPD)
- Background job support (& suffix, JOBS/FG commands)
- Command history (Up/Down arrow)

Command Consolidation:
- 14 commands extracted from 9 units into centralized progmanager.pas
- Command procedures exported in host unit interfaces
- E1000/TRACER/stdio builtins kept in-place (conditional/circular)

New Units:
- src/include/proctypes.pas — process type definitions
- src/processmanager.pas — core process manager
- src/prog/ping.pas — standalone ICMP ping process
- src/prog/testcmd.pas — test command (proc_sleep_ms demo)
- src/testprocs.pas — process subsystem smoke tests

Misc:
- ICMP callbacks gain userData parameter for concurrency-safe ping
- CLI/STI guards on kalloc/kfree (lmemorymanager.pas)
- LV_KEY_CTRLC constant + Ctrl+C interception in LVGL keyboard hook
- Window owner PID tracking (windows.pas)
- ISR_32 gate override support (isrmanager.pas)

.gitignore

@@ -14,7 +14,5 @@ localenv.json
 /lvgl/
 dockerout.txt
 AGENTS.md
-lessons_learnt.md
 *.log
-/doc/*.md
+/doc/*.md
-wasuro

compile.sh

@@ -24,7 +24,6 @@ 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_wasuro.sh" "Failed to pull Wasuro!"
 	"compile_sources.sh" "Failed to compile FPC Sources!"
 	"compile_link.sh" "Failed linking!"
 	"compile_isogen.sh" "Failed to create ISO!"

compile_lvgl.sh

@@ -1,7 +1,7 @@
 #!/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.
+# Copy source + objects to /lvgl (host mount) for debugging.
 set -e
 
 LVGL_VERSION="v9.2.2"
@@ -10,7 +10,6 @@ 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 \
@@ -27,17 +26,6 @@ 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}..."
@@ -117,16 +105,14 @@ else
     echo "No custom LVGL files in lvglh/."
 fi
 
-# Cache liblvgl.a and source to host mount for next build
+# Copy source + objects to /lvgl host mount for debugging
-echo "Caching LVGL to host mount..."
+echo "Copying LVGL source and objects to host mount..."
-mkdir -p "$CACHE_DIR"
+mkdir /code/lvgl 2>/dev/null || true
-rm -rf ${CACHE_DIR}/* ${CACHE_DIR}/.[!.]* ${CACHE_DIR}/..?* 2>/dev/null || true
+rm -rf /code/lvgl/* /code/lvgl/.[!.]* /code/lvgl/..?* 2>/dev/null || true
-cp "${OUT_DIR}/liblvgl.a" "${CACHE_DIR}/liblvgl.a"
+cp -a "$LVGL_DIR/src" /code/lvgl/src
-cp -a "$LVGL_DIR/src" "${CACHE_DIR}/src"
+cp -a "$OBJ_DIR" /code/lvgl/obj
-cp -a "$LVGL_DIR"/*.h "${CACHE_DIR}/" 2>/dev/null || true
-cp -a "$OBJ_DIR" "${CACHE_DIR}/obj"
 echo "Done."
 
 echo " "
 echo "LVGL compilation complete."
-echo " "
+echo " "

compile_sources.sh

@@ -4,10 +4,4 @@ echo "======================="
 echo " "
 echo "Compiling FPC Sources..."
 echo " "
-# Build -Fu flags for all directories under src/ and wasuro/
+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/* -Fusrc/driver/bus/* -Fusrc/driver/bus/usb/* -Fusrc/driver/hid/* src/kernel.pas
-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

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

compile_wasuro.sh

@@ -1,43 +0,0 @@
-#!/usr/bin/env bash
-# compile_wasuro.sh — Pull Wasuro WASM runtime source into wasuro/
-# Clones the repo (sparse, src/wasm only) and copies the Pascal sources
-# into $PWD/wasuro so the FPC build can reference them via -Fu.
-set -e
-
-WASURO_REPO="https://gitea.spexeah.com/Spexeah/Wasuro.git"
-WASURO_BRANCH="develop"
-WASURO_TMP="/tmp/wasuro"
-WASURO_OUT="$(pwd)/wasuro"
-
-echo " "
-echo "======================="
-echo " "
-echo "Pulling Wasuro WASM runtime..."
-echo " "
-
-# Skip if wasuro/ already has .pas files (cached from previous build)
-if [ -n "$(find "${WASURO_OUT}" -name '*.pas' 2>/dev/null | head -1)" ]; then
-    echo "Wasuro sources already present in ${WASURO_OUT}, skipping pull."
-    echo " "
-    exit 0
-fi
-
-# Clone sparse checkout (only src/wasm)
-rm -rf "$WASURO_TMP"
-git clone --depth 1 --branch "${WASURO_BRANCH}" --filter=blob:none --sparse \
-    "${WASURO_REPO}" "${WASURO_TMP}" 2>&1
-cd "$WASURO_TMP"
-git sparse-checkout set src/wasm 2>&1
-cd -
-
-echo "Copying src/wasm to ${WASURO_OUT}..."
-rm -rf "$WASURO_OUT"
-mkdir -p "$WASURO_OUT"
-cp -a "${WASURO_TMP}/src/wasm/"* "$WASURO_OUT"/
-rm -rf "$WASURO_TMP"
-
-TOTAL=$(find "$WASURO_OUT" -name '*.pas' | wc -l)
-echo "Copied ${TOTAL} Pascal source files."
-echo " "
-echo "Wasuro pull complete."
-echo " "

doc/flatfs.md

@@ -1,32 +0,0 @@
-#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

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

src/driver/bus/PCI.pas

@@ -91,7 +91,6 @@ function getDeviceInfo(class_code : uint8; subclass_code : uint8; prog_if : uint
 procedure requestConfig(bus : uint8; slot : uint8; func : uint8; row : uint8);
 procedure writeConfig(bus: uint8; slot : uint8; func : uint8; row : uint8; val : uint32);
 procedure setBusMaster(bus : uint8; slot : uint8; func : uint8; master : boolean);
-procedure enableDevice(bus : uint8; slot : uint8; func : uint8);
 
 implementation 
 
@@ -443,34 +442,4 @@ begin
     pop_trace;
 end;
 
-//Enable device inturrupts and set bus master
-procedure enableDevice(bus : uint8; slot : uint8; func : uint8);
-var
-    addr : uint32;
-    cmd : uint32;
-begin
-    push_trace('PCI.enableDevice');
-
-    addr := ($1 shl 31);
-    addr := addr or (bus shl 16);
-    addr := addr or ((slot) shl 11);
-    addr := addr or ((func) shl 8);
-    addr := addr or ($04 and $FC);
-
-    outl(PCI_CONFIG_ADDRESS_PORT, addr);
-    cmd := inl(PCI_CONFIG_DATA_PORT);
-    cmd := cmd or PCI_COMMAND_MEM_SPACE;
-    cmd := cmd or PCI_COMMAND_BUS_MASTER;
-    cmd := cmd or (3 shl 1);
-
-    //enable interrupts, remove disable interrupt bit maybe
-    cmd := cmd and not PCI_COMMAND_INT_DISABLE;
-    // cmd := cmd and not (1 shl 9);
-
-    outl(PCI_CONFIG_ADDRESS_PORT, addr);
-    outl(PCI_CONFIG_DATA_PORT, cmd);
-
-    pop_trace;
-end;
-
 end.

src/driver/bus/usb/usbcore.pas

@@ -957,14 +957,11 @@ end;
 procedure usb_check_hotplug;
 var
     i    : uint32;
-    count: uint32;
     hc   : PUSBHCDriver;
     port : uint8;
 begin
     if HCList = nil then exit;
-    count := LL_Size(HCList);
+    for i := 0 to LL_Size(HCList) - 1 do begin
-    if count = 0 then exit;
-    for i := 0 to count - 1 do begin
         hc := PUSBHCDriver(LL_Get(HCList, i));
         if (hc <> nil) and hc^.PortChangePending then begin
             hc^.PortChangePending := false;

src/driver/hid/ps2/ps2_mouse.pas

@@ -119,12 +119,8 @@ var
     x32, y32 : sint32;
     r : pchar;
 begin
-    { mouse_wait(0) checks OBF with a short timeout (100 iterations).
-      When it returns true, data is ready — read it directly with inb($60).
-      Do NOT call mouse_read here: it uses mouse_wait_long (100k iterations)
-      and would spin-block the ISR if the next packet byte hasn't arrived yet. }
     while mouse_wait(0) do begin
-        b := inb($60);
+        b := mouse_read;
         if Cycle = 0 then begin
             if (b AND $08) = $08 then begin
                 Mouse_Byte[Cycle] := b;

src/driver/include/drivertypes.pas

@@ -21,29 +21,6 @@ unit drivertypes;
 
 interface
 
-const
-    PCI_CONFIG_ADDRESS_PORT = $0CF8;
-    PCI_CONFIG_DATA_PORT    = $0CFC;
-
-    PCI_COMMAND_IO_SPACE    = $0001;
-    PCI_COMMAND_MEM_SPACE   = $0002;
-    PCI_COMMAND_BUS_MASTER  = $0004;
-    PCI_COMMAND_SPECIAL_CYC = $0008;
-    PCI_COMMAND_MEM_WRITE   = $0010;
-    PCI_COMMAND_VGA_PALETTE = $0020;
-    PCI_COMMAND_PARITY      = $0040;
-    PCI_COMMAND_WAIT        = $0080;
-    PCI_COMMAND_SERR        = $0100;
-    PCI_COMMAND_FAST_BACK   = $0200;
-    PCI_COMMAND_INT_DISABLE = $0400;
-    PCI_COMMAND_SERR_ENABLE = $8000;
-
-    PCI_CAP_ID_MSI           = $05;
-
-    // Bits in the MSI Control register (16-bit):
-    MSI_CONTROL_ENABLE       = 1 shl 0;  // Bit 0
-    MSI_CONTROL_64BIT        = 1 shl 7;  // Bit 7
-    MSI_CONTROL_PVMASK       = 1 shl 8;  // Bit 8 (optional: per-vector masking)
 type
 
     PPCI_Device = ^TPCI_Device;
@@ -67,7 +44,6 @@ type
         address1       : uint32;
         address2       : uint32;
         address3       : uint32;
-
         address4       : uint32;
         address5       : uint32;
         CIS_pointer    : uint32;

src/driver/storage/ATA_ISR.pas

@@ -0,0 +1,85 @@
+//  Copyright 2021 Aaron Hance
+//
+//  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.
+
+{ 
+	Drivers->Storage->ATA_ISR - Primary ATA IRQ.
+	
+	@author(Aaron Hance <[email protected]>)
+}
+unit ATA_ISR;
+
+interface
+
+uses
+    util,
+    syslog,
+    isr_types,
+    isrmanager,
+    IDT;
+
+procedure register();
+procedure hook(hook_method : uint32);
+procedure unhook(hook_method : uint32);
+
+implementation
+
+var
+    Hooks : Array[1..MAX_HOOKS] of pp_hook_method;
+
+procedure Main(); interrupt;
+var
+    i : integer;
+    
+begin
+    CLI;
+    for i:=0 to MAX_HOOKS-1 do begin
+        if uint32(Hooks[i]) <> 0 then Hooks[i](void($00000000));
+    end;
+    syslog.writestringln('Disk Operation Complete');
+end;
+
+procedure register();
+begin
+    memset(uint32(@Hooks[0]), 0, sizeof(pp_hook_method)*MAX_HOOKS);
+    //isrmanager.registerISR(76, @Main);
+    //IDT.set_gate(76, uint32(@Main), $08, ISR_RING_0);
+end;
+
+procedure hook(hook_method : uint32);
+var
+    i : uint32;
+
+begin
+    for i:=0 to MAX_HOOKS-1 do begin
+        if uint32(Hooks[i]) = hook_method then exit;
+    end;
+    for i:=0 to MAX_HOOKS-1 do begin
+        if uint32(Hooks[i]) = 0 then begin
+            Hooks[i]:= pp_hook_method(hook_method);
+            exit;
+        end;
+    end;
+end;
+
+procedure unhook(hook_method : uint32);
+var
+    i : uint32;
+begin
+    for i:=0 to MAX_HOOKS-1 do begin
+        If uint32(Hooks[i]) = hook_method then Hooks[i]:= nil;
+        exit;
+    end;
+end;
+
+end.

src/driver/storage/Filesystems/filesystemmanager.pas

@@ -1,120 +0,0 @@
-{
-    Driver->Storage->FilesystemManager - Filesystem driver registry and routing.
-
-    Filesystem drivers (FAT32, FlatFS, etc.) register themselves here.
-    When VolumeManager discovers a volume, FilesystemManager probes it
-    against all registered filesystem drivers to detect the filesystem type.
-
-    @author(Aaron Hance <[email protected]>)
-}
-unit filesystemmanager;
-
-interface
-
-uses
-    lists,
-    lmemorymanager,
-    storagetypes,
-    strings,
-    tracer,
-    util;
-
-var
-    filesystems : PLinkedListBase;
-
-procedure init();
-procedure register_filesystem(filesystem : PFilesystem);
-function get_filesystem_count() : uint32;
-function get_filesystem(index : uint32) : PFilesystem;
-function find_filesystem_by_name(name : pchar) : PFilesystem;
-function find_filesystem_by_id(system_id : uint8) : PFilesystem;
-procedure probe_volume(volume : PStorage_Volume);
-
-implementation
-
-procedure init();
-begin
-    push_trace('FilesystemManager.init');
-    filesystems := LL_New(sizeof(TFilesystem));
-end;
-
-procedure register_filesystem(filesystem : PFilesystem);
-var
-    elm : void;
-begin
-    push_trace('FilesystemManager.register_filesystem');
-
-    elm := LL_Add(filesystems);
-    memcpy(uint32(filesystem), uint32(elm), sizeof(TFilesystem));
-end;
-
-function get_filesystem_count() : uint32;
-begin
-    get_filesystem_count := LL_Size(filesystems);
-end;
-
-function get_filesystem(index : uint32) : PFilesystem;
-begin
-    if index < LL_Size(filesystems) then
-        get_filesystem := PFilesystem(LL_Get(filesystems, index))
-    else
-        get_filesystem := nil;
-end;
-
-function find_filesystem_by_name(name : pchar) : PFilesystem;
-var
-    i  : uint32;
-    fs : PFilesystem;
-begin
-    push_trace('FilesystemManager.find_filesystem_by_name');
-    find_filesystem_by_name := nil;
-
-    for i := 0 to LL_Size(filesystems) - 1 do begin
-        fs := PFilesystem(LL_Get(filesystems, i));
-        if stringEquals(fs^.sName, name) then begin
-            find_filesystem_by_name := fs;
-            exit;
-        end;
-    end;
-end;
-
-function find_filesystem_by_id(system_id : uint8) : PFilesystem;
-var
-    i  : uint32;
-    fs : PFilesystem;
-begin
-    push_trace('FilesystemManager.find_filesystem_by_id');
-    find_filesystem_by_id := nil;
-
-    for i := 0 to LL_Size(filesystems) - 1 do begin
-        fs := PFilesystem(LL_Get(filesystems, i));
-        if fs^.system_id = system_id then begin
-            find_filesystem_by_id := fs;
-            exit;
-        end;
-    end;
-end;
-
-procedure probe_volume(volume : PStorage_Volume);
-var
-    i  : uint32;
-    fs : PFilesystem;
-begin
-    push_trace('FilesystemManager.probe_volume.enter');
-
-    { Try each registered filesystem's identify callback against this volume }
-    for i := 0 to LL_Size(filesystems) - 1 do begin
-        fs := PFilesystem(LL_Get(filesystems, i));
-        if fs^.identifyCallback <> nil then begin
-            push_trace('FilesystemManager.probe_volume.tryFS');
-            if fs^.identifyCallback(volume) then begin
-                volume^.filesystem := fs;
-                push_trace('FilesystemManager.probe_volume.found');
-                exit;
-            end;
-        end;
-    end;
-    push_trace('FilesystemManager.probe_volume.exit');
-end;
-
-end.