First working version! Basic hello world kernel.

boot/boot.s

@@ -0,0 +1,40 @@
+# Declare constants for creating a multiboot header
+.set ALIGN,	1<<0
+.set MEMINFO,	1<<1
+.set FLAGS,	ALIGN | MEMINFO
+.set MAGIC,	0x1BADB002
+.set CHECKSUM,	-(MAGIC + FLAGS)
+
+# Declare multiboot header
+.section .multiboot
+.align 4
+.long MAGIC
+.long FLAGS
+.long CHECKSUM
+
+# Create a 16 KiB stack
+.section .bootstrap_stack
+stack_bottom:
+.skip 16384
+stack_top:
+
+# Kernel entry point
+.section .text
+.global _start
+.type _start, @function
+_start:
+	# We are now in kernel mode!
+	# Setup the stack
+	movl $stack_top, %esp
+	
+	# Call the main kernel function
+	call brados_main
+	
+	# In case the function returns, enter an endless loop
+	cli
+	hlt
+.Lhang:
+	jmp .Lhang
+
+# Set the size of the _start symbol for debugging
+.size _start, . - _start