CPU: Add 2 files with ISR stub macros

Author: https://github.com/supercomputer7
Commit: 71371d39b3
Pull-request: https://github.com/SerenityOS/serenity/pull/1274
Reviewed-by: https://github.com/awesomekling
Reviewed-by: https://github.com/shannonbooth

Kernel/Arch/i386/Interrupts.h

@@ -0,0 +1,36 @@
+#pragma once
+
+#include <AK/Types.h>
+
+extern "C" void interrupt_common_asm_entry();
+
+#define GENERATE_GENERIC_INTERRUPT_HANDLER_ASM_ENTRY(interrupt_vector, isr_number) \
+    extern "C" void interrupt_##interrupt_vector##_asm_entry();                    \
+    asm(".globl interrupt_" #interrupt_vector "_asm_entry\n"                       \
+        "interrupt_" #interrupt_vector "_asm_entry:\n"                             \
+        "    pushw $" #isr_number "\n"                                             \
+        "    pushw $0\n"                                                           \
+        "    jmp interrupt_common_asm_entry\n");
+
+asm(
+    ".globl interrupt_common_asm_entry\n"
+    "interrupt_common_asm_entry: \n"
+    "    pusha\n"
+    "    pushl %ds\n"
+    "    pushl %es\n"
+    "    pushl %fs\n"
+    "    pushl %gs\n"
+    "    pushl %ss\n"
+    "    mov $0x10, %ax\n"
+    "    mov %ax, %ds\n"
+    "    mov %ax, %es\n"
+    "    cld\n"
+    "    call handle_interrupt\n"
+    "    add $0x4, %esp\n" // "popl %ss"
+    "    popl %gs\n"
+    "    popl %fs\n"
+    "    popl %es\n"
+    "    popl %ds\n"
+    "    popa\n"
+    "    add $0x4, %esp\n"
+    "    iret\n");