1 files changed, 50 insertions, 0 deletions
diff --git a/src/kernel/boot.asm b/src/kernel/boot.asm
new file mode 100644
index 0000000..eddd3a4
--- /dev/null
+++ b/src/kernel/boot.asm
@@ -0,0 +1,50 @@
+[BITS 32]
+global start
+start:
+    mov esp, _sys_stack ; Points stack to stack area
+    jmp stublet
+
+; Align with 4 Bytes
+ALIGN 4
+mboot:
+    ; Multiboot macros
+    MULTIBOOT_PAGE_ALIGN equ 1<<0
+    MULTIBOOT_MEMORY_INFO equ 1<<1
+    MULTIBOOT_AOUT_KLUDGE equ 1<<16
+    MULTIBOOT_HEADER_MAGIC equ 0x1BADB002
+    MULTIBOOT_HEADER_FLAGS equ MULTIBOOT_PAGE_ALIGN | MULTIBOOT_MEMORY_INFO | MULTIBOOT_AOUT_KLUDGE
+    MULTIBOOT_CHECKSUM	equ -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS)
+    EXTERN code, bss, end
+
+    ; GRUB Multiboot header
+    dd MULTIBOOT_HEADER_MAGIC
+    dd MULTIBOOT_HEADER_FLAGS
+    dd MULTIBOOT_CHECKSUM
+
+    ; AOUT kludge
+    dd mboot
+    dd code
+    dd bss
+    dd end
+    dd start
+
+; Endless loop
+stublet:
+    extern kernel_main
+    call kernel_main
+    jmp $
+
+%include "src/kernel/gdt/gdt.asm"
+
+%include "src/kernel/interrupts/idt.asm"
+
+%include "src/kernel/interrupts/isr.asm"
+
+%include "src/kernel/interrupts/irq.asm"
+
+%include "src/kernel/io/io.asm"
+
+; Store the stack
+SECTION .bss
+    resb 8192 ; Reserve 8KiB
+_sys_stack:
+\ No newline at end of file