1 files changed, 78 insertions, 0 deletions
diff --git a/src/kernel/KernelKit/KPC.h b/src/kernel/KernelKit/KPC.h
new file mode 100644
index 00000000..dbdc2a93
--- /dev/null
+++ b/src/kernel/KernelKit/KPC.h
@@ -0,0 +1,78 @@
+/* ========================================
+
+  Copyright (C) 2024-2025, Amlal El Mahrouss, licensed under the Apache 2.0 license.
+
+======================================== */
+
+#pragma once
+
+#include <NeKit/Defines.h>
+
+/// @file KPC.h
+/// @brief Kernel Procedure Code.
+
+#define err_local_ok()                                                              \
+  (Kernel::UserProcessScheduler::The().TheCurrentProcess().Leak().GetLocalCode() == \
+   Kernel::kErrorSuccess)
+#define err_local_fail()                                                            \
+  (Kernel::UserProcessScheduler::The().TheCurrentProcess().Leak().GetLocalCode() != \
+   Kernel::kErrorSuccess)
+#define err_local_get() \
+  (Kernel::UserProcessScheduler::The().TheCurrentProcess().Leak().GetLocalCode())
+
+#define err_global_ok() (Kernel::kErrorLocalNumber == Kernel::kErrorSuccess)
+#define err_global_fail() (Kernel::kErrorLocalNumber != Kernel::kErrorSuccess)
+#define err_global_get() (Kernel::kErrorLocalNumber)
+
+namespace Kernel {
+typedef Int32 KPCError;
+
+inline KPCError kErrorLocalNumber = 0UL;
+
+inline constexpr KPCError kErrorSuccess            = 0;
+inline constexpr KPCError kErrorExecutable         = 33;
+inline constexpr KPCError kErrorExecutableLib      = 34;
+inline constexpr KPCError kErrorFileNotFound       = 35;
+inline constexpr KPCError kErrorDirectoryNotFound  = 36;
+inline constexpr KPCError kErrorDiskReadOnly       = 37;
+inline constexpr KPCError kErrorDiskIsFull         = 38;
+inline constexpr KPCError kErrorProcessFault       = 39;
+inline constexpr KPCError kErrorSocketHangUp       = 40;
+inline constexpr KPCError kErrorThreadLocalStorage = 41;
+inline constexpr KPCError kErrorMath               = 42;
+inline constexpr KPCError kErrorNoNetwork          = 43;
+inline constexpr KPCError kErrorHeapOutOfMemory    = 44;
+inline constexpr KPCError kErrorNoSuchDisk         = 45;
+inline constexpr KPCError kErrorFileExists         = 46;
+inline constexpr KPCError kErrorFormatFailed       = 47;
+inline constexpr KPCError kErrorNetworkTimeout     = 48;
+inline constexpr KPCError kErrorInternal           = 49;
+inline constexpr KPCError kErrorForkAlreadyExists  = 50;
+inline constexpr KPCError kErrorOutOfTeamSlot      = 51;
+inline constexpr KPCError kErrorHeapNotPresent     = 52;
+inline constexpr KPCError kErrorNoEntrypoint       = 53;
+inline constexpr KPCError kErrorDiskIsCorrupted    = 54;
+inline constexpr KPCError kErrorDisk               = 55;
+inline constexpr KPCError kErrorInvalidData        = 56;
+inline constexpr KPCError kErrorAsync              = 57;
+inline constexpr KPCError kErrorNonBlocking        = 58;
+inline constexpr KPCError kErrorIPC                = 59;
+inline constexpr KPCError kErrorSign               = 60;
+inline constexpr KPCError kErrorInvalidCreds       = 61;
+inline constexpr KPCError kErrorCDTrayBroken       = 62;
+inline constexpr KPCError kErrorUnrecoverableDisk  = 63;
+inline constexpr KPCError kErrorFileLocked         = 64;
+inline constexpr KPCError kErrorDiskIsTooTiny      = 65;
+inline constexpr KPCError kErrorDmaExhausted       = 66;
+inline constexpr KPCError kErrorOutOfBitMapMemory  = 67;
+inline constexpr KPCError kErrorTimeout            = 68;
+inline constexpr KPCError kErrorAccessDenied       = 69;
+inline constexpr KPCError kErrorUnavailable        = 70;
+/// Generic errors.
+inline constexpr KPCError kErrorUnimplemented = -1;
+
+/// @brief Does a system wide bug check.
+/// @param void no params are needed.
+/// @return if error-free: false, otherwise true.
+Boolean err_bug_check_raise(Void) noexcept;
+}  // namespace Kernel