Added build system and some core boot files

arch/x86_64/layout.ld

@@ -0,0 +1,56 @@
+ENTRY(_start)
+
+KERNEL_LMA = 1M;
+KERNEL_VMA = 0xFFFFFFFF80000000;
+
+SECTIONS {
+	. = KERNEL_LMA;
+
+	.boot.text ALIGN(4K) : {
+		*(.boot.text)
+		*(.boot.rodata)
+	}
+
+	.boot.bss ALIGN(4K) : {
+		*(.boot.bss)
+	}
+
+    . += KERNEL_VMA;
+
+    .text ALIGN(4K) : AT(ADDR(.text) - KERNEL_VMA)
+    {
+        *(.text)
+    }
+
+   .data ALIGN(4K) : AT(ADDR(.data) - KERNEL_VMA)
+   {
+        _data = .;
+        *(.data)
+   }
+
+   .eh_frame ALIGN(4K) : AT(ADDR(.eh_frame) - KERNEL_VMA)
+   {
+       _ehframe = .;
+       *(.eh_frame)
+   }
+
+   .bss ALIGN(4K) : AT(ADDR(.bss) - KERNEL_VMA)
+   {
+       _bss = .;
+       *(.bss)
+
+	   */
+       /*
+        * You usually need to include generated COMMON symbols
+        * under kernel BSS section or use gcc's -fno-common
+        */
+        *(COMMON)
+   }
+
+   _end = .;
+
+   /DISCARD/ :
+   {
+        *(.comment)
+   }
+}