Merge pull request #32 from nekernel-org/dev

0.0.2e3

1 files changed, 159 insertions, 0 deletions

diff --git a/dev/kernel/HALKit/AMD64/HalCoreInterruptHandler.cc b/dev/kernel/HALKit/AMD64/HalCoreInterruptHandler.cc
new file mode 100644
index 00000000..01456ae5
--- /dev/null
+++ b/dev/kernel/HALKit/AMD64/HalCoreInterruptHandler.cc
@@ -0,0 +1,159 @@
+/* -------------------------------------------
+
+  Copyright (C) 2024-2025, Amlal El Mahrouss, all rights reserved.
+
+------------------------------------------- */
+
+#include <ArchKit/ArchKit.h>
+#include <KernelKit/ProcessScheduler.h>
+#include <NeKit/KString.h>
+#include <SignalKit/Signals.h>
+
+EXTERN_C Kernel::Void idt_handle_breakpoint(Kernel::UIntPtr rip);
+
+EXTERN_C Kernel::UIntPtr kApicBaseAddress;
+
+STATIC BOOL kIsRunning = NO;
+
+/// @brief Notify APIC and PIC that we're done with the interrupt.
+/// @note
+STATIC void hal_idt_send_eoi(UInt8 vector) {
+  ((volatile UInt32*) kApicBaseAddress)[0xB0 / 4] = 0;
+
+  if (vector >= kPICCommand && vector <= 0x2F) {
+    if (vector >= 0x28) {
+      Kernel::HAL::rt_out8(kPIC2Command, kPICCommand);
+    }
+    Kernel::HAL::rt_out8(kPICCommand, kPICCommand);
+  }
+}
+
+/// @brief Handle GPF fault.
+/// @param rsp
+EXTERN_C Kernel::Void idt_handle_gpf(Kernel::UIntPtr rsp) {
+  auto& process = Kernel::UserProcessScheduler::The().TheCurrentProcess();
+  process.Leak().Crash();
+
+  hal_idt_send_eoi(13);
+
+  process.Leak().Signal.SignalArg = rsp;
+  process.Leak().Signal.SignalID  = SIGKILL;
+  process.Leak().Signal.Status    = process.Leak().Status;
+}
+
+/// @brief Handle page fault.
+/// @param rsp
+EXTERN_C void idt_handle_pf(Kernel::UIntPtr rsp) {
+  auto& process = Kernel::UserProcessScheduler::The().TheCurrentProcess();
+  process.Leak().Crash();
+
+  hal_idt_send_eoi(14);
+
+  process.Leak().Signal.SignalArg = rsp;
+  process.Leak().Signal.SignalID  = SIGKILL;
+  process.Leak().Signal.Status    = process.Leak().Status;
+}
+
+/// @brief Handle scheduler interrupt.
+EXTERN_C void idt_handle_scheduler(Kernel::UIntPtr rsp) {
+  NE_UNUSED(rsp);
+
+  hal_idt_send_eoi(32);
+
+  while (kIsRunning)
+    ;
+
+  kIsRunning = YES;
+
+  Kernel::UserProcessHelper::StartScheduling();
+
+  kIsRunning = NO;
+}
+
+/// @brief Handle math fault.
+/// @param rsp
+EXTERN_C void idt_handle_math(Kernel::UIntPtr rsp) {
+  auto& process = Kernel::UserProcessScheduler::The().TheCurrentProcess();
+  process.Leak().Crash();
+
+  hal_idt_send_eoi(8);
+
+  process.Leak().Signal.SignalArg = rsp;
+  process.Leak().Signal.SignalID  = SIGKILL;
+  process.Leak().Signal.Status    = process.Leak().Status;
+}
+
+/// @brief Handle any generic fault.
+/// @param rsp
+EXTERN_C void idt_handle_generic(Kernel::UIntPtr rsp) {
+  auto& process = Kernel::UserProcessScheduler::The().TheCurrentProcess();
+  process.Leak().Crash();
+
+  hal_idt_send_eoi(30);
+
+  Kernel::kout << "Kernel: Generic Process Fault.\r";
+
+  process.Leak().Signal.SignalArg = rsp;
+  process.Leak().Signal.SignalID  = SIGKILL;
+  process.Leak().Signal.Status    = process.Leak().Status;
+
+  Kernel::kout << "Kernel: SIGKILL status.\r";
+}
+
+EXTERN_C Kernel::Void idt_handle_breakpoint(Kernel::UIntPtr rip) {
+  auto& process = Kernel::UserProcessScheduler::The().TheCurrentProcess();
+
+  hal_idt_send_eoi(3);
+
+  process.Leak().Signal.SignalArg = rip;
+  process.Leak().Signal.SignalID  = SIGTRAP;
+
+  process.Leak().Signal.Status = process.Leak().Status;
+
+  process.Leak().Status = Kernel::ProcessStatusKind::kFrozen;
+}
+
+/// @brief Handle #UD fault.
+/// @param rsp
+EXTERN_C void idt_handle_ud(Kernel::UIntPtr rsp) {
+  auto& process = Kernel::UserProcessScheduler::The().TheCurrentProcess();
+  process.Leak().Crash();
+
+  hal_idt_send_eoi(6);
+
+  process.Leak().Signal.SignalArg = rsp;
+  process.Leak().Signal.SignalID  = SIGKILL;
+  process.Leak().Signal.Status    = process.Leak().Status;
+}
+
+/// @brief Enter syscall from assembly.
+/// @param stack the stack pushed from assembly routine.
+/// @return nothing.
+EXTERN_C Kernel::Void hal_system_call_enter(Kernel::UIntPtr rcx_syscall_index,
+                                            Kernel::UIntPtr rdx_syscall_struct) {
+  hal_idt_send_eoi(50);
+
+  if (rcx_syscall_index < kSysCalls.Count()) {
+    if (kSysCalls[rcx_syscall_index].fHooked) {
+      if (kSysCalls[rcx_syscall_index].fProc) {
+        (kSysCalls[rcx_syscall_index].fProc)((Kernel::VoidPtr) rdx_syscall_struct);
+      }
+    }
+  }
+}
+
+/// @brief Enter Kernel call from assembly (DDK only).
+/// @param stack the stack pushed from assembly routine.
+/// @return nothing.
+EXTERN_C Kernel::Void hal_kernel_call_enter(Kernel::UIntPtr rcx_kerncall_index,
+                                            Kernel::UIntPtr rdx_kerncall_struct) {
+  hal_idt_send_eoi(51);
+
+  if (rcx_kerncall_index < kKernCalls.Count()) {
+    if (kKernCalls[rcx_kerncall_index].fHooked) {
+      if (kKernCalls[rcx_kerncall_index].fProc) {
+        (kKernCalls[rcx_kerncall_index].fProc)((Kernel::VoidPtr) rdx_kerncall_struct);
+      }
+    }
+  }
+}