diff --git a/include/kernel/cpuid.h b/include/kernel/cpuid.h
new file mode 100644
index 0000000..ea63172
--- /dev/null
+++ b/include/kernel/cpuid.h
@@ -0,0 +1,112 @@
+//----------------------------------------------------------------------------//
+// GNU GPL OS/K //
+// //
+// Desc: CPUID related functions //
+// //
+// //
+// Copyright © 2018-2019 The OS/K Team //
+// //
+// This file is part of OS/K. //
+// //
+// OS/K is free software: you can redistribute it and/or modify //
+// it under the terms of the GNU General Public License as published by //
+// the Free Software Foundation, either version 3 of the License, or //
+// any later version. //
+// //
+// OS/K is distributed in the hope that it will be useful, //
+// but WITHOUT ANY WARRANTY//without even the implied warranty of //
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
+// GNU General Public License for more details. //
+// //
+// You should have received a copy of the GNU General Public License //
+// along with OS/K. If not, see . //
+//----------------------------------------------------------------------------//
+
+#ifndef _KALKERN_BASE_H
+#include
+#endif
+
+#ifndef _KALKERN_CPUID_H
+#define _KALKERN_CPUID_H
+
+// -------------------------------------------------------------------------- //
+
+typedef struct Registers_t Registers_t;
+
+// -------------------------------------------------------------------------- //
+
+// CPU features masks
+enum {
+ FEAT_ECX_SSE3 = 1 << 0,
+ FEAT_ECX_PCLMUL = 1 << 1,
+ FEAT_ECX_DTES64 = 1 << 2,
+ FEAT_ECX_MONITOR = 1 << 3,
+ FEAT_ECX_DS_CPL = 1 << 4,
+ FEAT_ECX_VMX = 1 << 5,
+ FEAT_ECX_SMX = 1 << 6,
+ FEAT_ECX_EST = 1 << 7,
+ FEAT_ECX_TM2 = 1 << 8,
+ FEAT_ECX_SSSE3 = 1 << 9,
+ FEAT_ECX_CID = 1 << 10,
+ FEAT_ECX_FMA = 1 << 12,
+ FEAT_ECX_CX16 = 1 << 13,
+ FEAT_ECX_ETPRD = 1 << 14,
+ FEAT_ECX_PDCM = 1 << 15,
+ FEAT_ECX_PCIDE = 1 << 17,
+ FEAT_ECX_DCA = 1 << 18,
+ FEAT_ECX_SSE4_1 = 1 << 19,
+ FEAT_ECX_SSE4_2 = 1 << 20,
+ FEAT_ECX_x2APIC = 1 << 21,
+ FEAT_ECX_MOVBE = 1 << 22,
+ FEAT_ECX_POPCNT = 1 << 23,
+ FEAT_ECX_AES = 1 << 25,
+ FEAT_ECX_XSAVE = 1 << 26,
+ FEAT_ECX_OSXSAVE = 1 << 27,
+ FEAT_ECX_AVX = 1 << 28,
+
+ FEAT_EDX_FPU = 1 << 0,
+ FEAT_EDX_VME = 1 << 1,
+ FEAT_EDX_DE = 1 << 2,
+ FEAT_EDX_PSE = 1 << 3,
+ FEAT_EDX_TSC = 1 << 4,
+ FEAT_EDX_MSR = 1 << 5,
+ FEAT_EDX_PAE = 1 << 6,
+ FEAT_EDX_MCE = 1 << 7,
+ FEAT_EDX_CX8 = 1 << 8,
+ FEAT_EDX_APIC = 1 << 9,
+ FEAT_EDX_SEP = 1 << 11,
+ FEAT_EDX_MTRR = 1 << 12,
+ FEAT_EDX_PGE = 1 << 13,
+ FEAT_EDX_MCA = 1 << 14,
+ FEAT_EDX_CMOV = 1 << 15,
+ FEAT_EDX_PAT = 1 << 16,
+ FEAT_EDX_PSE36 = 1 << 17,
+ FEAT_EDX_PSN = 1 << 18,
+ FEAT_EDX_CLF = 1 << 19,
+ FEAT_EDX_DTES = 1 << 21,
+ FEAT_EDX_ACPI = 1 << 22,
+ FEAT_EDX_MMX = 1 << 23,
+ FEAT_EDX_FXSR = 1 << 24,
+ FEAT_EDX_SSE = 1 << 25,
+ FEAT_EDX_SSE2 = 1 << 26,
+ FEAT_EDX_SS = 1 << 27,
+ FEAT_EDX_HTT = 1 << 28,
+ FEAT_EDX_TM1 = 1 << 29,
+ FEAT_EDX_IA64 = 1 << 30,
+ FEAT_EDX_PBE = 1 << 31
+};
+
+// -------------------------------------------------------------------------- //
+
+struct Registers_t
+{
+ ulong ds;
+ ulong rdi, rsi, rbp, rsp, rbx, rdx, rcx, rax;
+ ulong intNo, errCode;
+ ulong rip, cs, eflags, useresp, ss;
+} __attribute__((packed));
+
+// -------------------------------------------------------------------------- //
+
+#endif
+
diff --git a/include/kernel/idt.h b/include/kernel/idt.h
new file mode 100644
index 0000000..d657e34
--- /dev/null
+++ b/include/kernel/idt.h
@@ -0,0 +1,132 @@
+#ifndef _KALKERN_BASE_H
+#include
+#endif
+
+#ifndef _KALKERN_IDT_H
+#define _KALKERN_IDT_H
+
+typedef struct IdtDescriptor_t IdtDescriptor_t;
+typedef struct IdtEntry_t IdtEntry_t;
+typedef struct IdtPtr_t IdtPtr_t;
+typedef struct IRQList_t IRQList_t;
+
+// -------------------------------------------------------------------------- //
+
+#define interrupt(n) asm volatile ("int %0" : : "N" (n) : "cc", "memory") \
+
+// -------------------------------------------------------------------------- //
+
+struct IdtDescriptor_t {
+ ushort limit;
+ ulong base;
+} __attribute__((packed)) ;
+
+struct IdtEntry_t
+{
+ ushort baseLow;
+ ushort selector;
+ uchar reservedIst;
+ uchar flags;
+ ushort baseMid;
+ uint baseHigh;
+ uint reserved;
+} __attribute__((packed));
+
+struct IdtPtr_t
+{
+ ushort limit;
+ void *base;
+} __attribute__((packed));
+
+struct IRQList_t
+{
+ uchar n; //number of entries in the list
+
+ struct entry {
+ void (*isr)(void);
+ uchar irq;
+ ulong base;
+ ushort selector;
+ uchar flags;
+ } entry[225];
+};
+
+static char *IsrExceptions[32] = {
+ "Divide Error Fault",
+ "Debug Exception Trap",
+ "Non-maskable Interrupt",
+ "Breakpoint Trap",
+ "Overflow Trap",
+ "Bound Range Exceeded Fault",
+ "Invalid Opcode Fault",
+ "Device Not Available or No Math Coprocessor Fault",
+ "Double Fault Abort",
+ "Coprocessor Segment Overrun Fault",
+ "Invalid TSS Fault",
+ "Segment Not Present Fault",
+ "Stack Segment fault",
+ "General Protection Fault",
+ "Page Fault",
+ "Intel Reserved",
+ "x87 FPU Floating Point or Math Fault",
+ "Alignment Check Fault",
+ "Machine Check Abort",
+ "SIMD Floating Point Fault",
+ "Virtualization Exception Fault",
+ "Intel Reserved",
+ "Intel Reserved",
+ "Intel Reserved",
+ "Intel Reserved",
+ "Intel Reserved",
+ "Intel Reserved",
+ "Intel Reserved",
+ "Intel Reserved",
+ "Intel Reserved",
+ "Intel Reserved",
+ "Intel Reserved"
+};
+
+// -------------------------------------------------------------------------- //
+
+void IdtRegisterIrq(void (*isr)(void), uchar irq, uchar flags);
+void IdtSetup(void);
+void IdtSetGate(uchar rank, ulong base, ushort selector, uchar flags);
+void IdtHandler(ulong intNo);
+static void DisablePIC(void);
+static void SendEOItoPIC(uchar isr);
+
+extern void CpuIdtInit();
+extern void isr0();
+extern void isr1();
+extern void isr2();
+extern void isr3();
+extern void isr4();
+extern void isr5();
+extern void isr6();
+extern void isr7();
+extern void isr8();
+extern void isr9();
+extern void isr10();
+extern void isr11();
+extern void isr12();
+extern void isr13();
+extern void isr14();
+extern void isr15();
+extern void isr16();
+extern void isr17();
+extern void isr18();
+extern void isr19();
+extern void isr20();
+extern void isr21();
+extern void isr22();
+extern void isr23();
+extern void isr24();
+extern void isr25();
+extern void isr26();
+extern void isr27();
+extern void isr28();
+extern void isr29();
+extern void isr30();
+extern void isr31();
+
+#endif