feat(kernel): see below for the commit's details.

what?
 - UserProcessScheduler and CoreProcessScheduler have been
extended for FILE_TREE and also HEAP_TREE structures.
 - DDK device's API will use dk_ calls instead of sk_ calls.
 - SIGTRAP and Interrupt handlers have been fixed to handle when no
   process is being run, and the kernel is instead raising the
interrupt.
 - Add file for HeFS formating in DiskImage.fwrk
 - Replace generic handler with breakpoint handler in int 3.

why?
 - These changes are bug fixes and improvements.

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>

4 files changed, 25 insertions, 35 deletions

diff --git a/dev/kernel/HALKit/AMD64/HalCoreInterruptHandlerAMD64.cc b/dev/kernel/HALKit/AMD64/HalCoreInterruptHandlerAMD64.cc
index 84c35615..c72a109a 100644
--- a/dev/kernel/HALKit/AMD64/HalCoreInterruptHandlerAMD64.cc
+++ b/dev/kernel/HALKit/AMD64/HalCoreInterruptHandlerAMD64.cc
@@ -16,7 +16,9 @@ STATIC BOOL kIsScheduling = NO;
 EXTERN_C void idt_handle_gpf(Kernel::UIntPtr rsp) {
   auto process = Kernel::UserProcessScheduler::The().CurrentProcess();
 
-  if (process.Leak().Status != Kernel::ProcessStatusKind::kRunning) return;
+  if (process.Leak().Status != Kernel::ProcessStatusKind::kRunning) {
+    MUST_PASS(NO);
+  }
 
   kIsScheduling = NO;
 
@@ -38,7 +40,9 @@ EXTERN_C void idt_handle_gpf(Kernel::UIntPtr rsp) {
 EXTERN_C void idt_handle_pf(Kernel::UIntPtr rsp) {
   auto process = Kernel::UserProcessScheduler::The().CurrentProcess();
 
-  if (process.Leak().Status != Kernel::ProcessStatusKind::kRunning) return;
+  if (process.Leak().Status != Kernel::ProcessStatusKind::kRunning) {
+    MUST_PASS(NO);
+  }
 
   kIsScheduling = NO;
 
@@ -83,7 +87,9 @@ EXTERN_C void idt_handle_scheduler(Kernel::UIntPtr rsp) {
 EXTERN_C void idt_handle_math(Kernel::UIntPtr rsp) {
   auto process = Kernel::UserProcessScheduler::The().CurrentProcess();
 
-  if (process.Leak().Status != Kernel::ProcessStatusKind::kRunning) return;
+  if (process.Leak().Status != Kernel::ProcessStatusKind::kRunning) {
+    MUST_PASS(NO);
+  }
 
   kIsScheduling = NO;
 
@@ -105,7 +111,9 @@ EXTERN_C void idt_handle_math(Kernel::UIntPtr rsp) {
 EXTERN_C void idt_handle_generic(Kernel::UIntPtr rsp) {
   auto process = Kernel::UserProcessScheduler::The().CurrentProcess();
 
-  if (process.Leak().Status != Kernel::ProcessStatusKind::kRunning) return;
+  if (process.Leak().Status != Kernel::ProcessStatusKind::kRunning) {
+    MUST_PASS(NO);
+  }
 
   kIsScheduling = NO;
 
@@ -126,10 +134,12 @@ EXTERN_C Kernel::Void idt_handle_breakpoint(Kernel::UIntPtr rip) {
   auto process = Kernel::UserProcessScheduler::The().CurrentProcess();
 
   if (process.Leak().Status != Kernel::ProcessStatusKind::kRunning) {
+    (Void)(Kernel::kout << "Kernel: Kernel RIP: " << Kernel::hex_number(rip) << Kernel::kendl);
     Kernel::kout << "Kernel: SIGTRAP\r";
 
-    while (YES)
-      ;
+    kIsScheduling = NO;
+
+    while (YES);
   }
 
   kIsScheduling = NO;
@@ -152,7 +162,9 @@ EXTERN_C Kernel::Void idt_handle_breakpoint(Kernel::UIntPtr rip) {
 EXTERN_C void idt_handle_ud(Kernel::UIntPtr rsp) {
   auto process = Kernel::UserProcessScheduler::The().CurrentProcess();
 
-  if (process.Leak().Status != Kernel::ProcessStatusKind::kRunning) return;
+  if (process.Leak().Status != Kernel::ProcessStatusKind::kRunning) {
+    MUST_PASS(NO);
+  }
 
   kIsScheduling = NO;
 
diff --git a/dev/kernel/HALKit/AMD64/HalCoreSystemCalls.cc b/dev/kernel/HALKit/AMD64/HalCoreSystemCalls.cc
index 8581950f..11e773a8 100644
--- a/dev/kernel/HALKit/AMD64/HalCoreSystemCalls.cc
+++ b/dev/kernel/HALKit/AMD64/HalCoreSystemCalls.cc
@@ -3,3 +3,7 @@
    Copyright (C) 2025, Amlal El Mahrouss, all rights reserved.
 
    ------------------------------------------- */
+
+#include <ArchKit/ArchKit.h>
+
+using namespace Kernel;
diff --git a/dev/kernel/HALKit/AMD64/HalInterruptAPI.asm b/dev/kernel/HALKit/AMD64/HalInterruptAPI.asm
index cc34b99f..cf2870c8 100644
--- a/dev/kernel/HALKit/AMD64/HalInterruptAPI.asm
+++ b/dev/kernel/HALKit/AMD64/HalInterruptAPI.asm
@@ -98,7 +98,7 @@ __NE_INT_3:
     out 0x20, al
 
     push rcx
-    call idt_handle_generic
+    call idt_handle_breakpoint
     pop rcx
 
     std
diff --git a/dev/kernel/HALKit/AMD64/HalKernelMain.cc b/dev/kernel/HALKit/AMD64/HalKernelMain.cc
index 2747439a..70b07193 100644
--- a/dev/kernel/HALKit/AMD64/HalKernelMain.cc
+++ b/dev/kernel/HALKit/AMD64/HalKernelMain.cc
@@ -126,32 +126,6 @@ EXTERN_C Kernel::Void hal_real_init(Kernel::Void) noexcept {
 
   idt_loader.Load(idt_reg);
 
-  /// after the scheduler runs, we must look over teams, every 5000s in order to schedule every
-  /// process according to their affinity fairly.
-
-  auto constexpr kSchedTeamSwitchMS = 5U;  /// @brief Team switch time in milliseconds.
-
-  Kernel::HardwareTimer timer(rtl_milliseconds(kSchedTeamSwitchMS));
-
-  STATIC Kernel::Array<UserProcessTeam, kSchedTeamCount> kTeams;
-
-  static SizeT team_index = 0U;
-
-  /// @brief This just loops over the teams and switches between them.
-  /// @details Not even round-robin, just a simple loop in this boot core we're at.
-  while (YES) {
-    if (team_index > (kSchedTeamCount - 1)) {
-      team_index = 0U;
-    }
-
-    kTeams[team_index].Id() = team_index;
-
-    while (!UserProcessScheduler::The().SwitchTeam(kTeams[team_index]))
-      ;
-
-    timer.Wait();
-
-    ++team_index;
-  }
+  dbg_break_point();
 }
 #endif  // ifndef __NE_MODULAR_KERNEL_COMPONENTS__