Rust kernel

Following  this post:
http://blog.phil-opp.com/rust-os/multiboot-kernel.html#fn2

rust_boot.asm

@@ -0,0 +1,7 @@
+global start
+
+section .text
+bits 32
+start:
+    mov dword [0xb800], 0x2f4b2f4f
+    hlt

rust_kernel/Makefile

@@ -0,0 +1,20 @@
+
+all: run_kernel
+
+kernel.bin: multiboot2_header.asm rust_boot.asm linker.ld
+	nasm -f elf64 multiboot2_header.asm
+	nasm -f elf64 rust_boot.asm
+	ld -n -o kernel.bin -T linker.ld multiboot2_header.o rust_boot.o
+
+os.iso: kernel.bin
+	cp kernel.bin isofiles/
+	grub-mkrescue -o os.iso isofiles
+
+run_kernel: os.iso
+	qemu-system-x86_64 -hda os.iso
+
+.PHONY: clean
+clean:
+	rm -f *.o
+	rm -f kernel.bin
+	rm -f os.iso

rust_kernel/isofiles/boot/grub/grub.cfg

@@ -0,0 +1,8 @@
+
+set timeout=2
+set default=0
+
+menuentry "my os" {
+    multiboot2 /boot/kernel.bin
+    boot
+}

rust_kernel/linker.ld

@@ -0,0 +1,16 @@
+ENTRY(start)
+
+SECTIONS {
+    . = 10K; /* load into memory at 1M */
+
+    .boot :
+    {
+        /* ensure that the multiboot header is at the beginning */
+        *(.multiboot2_header)
+    }
+
+    .text :
+    {
+        *(.text)
+    }
+}

rust_kernel/multiboot2_header.asm

@@ -0,0 +1,14 @@
+section .multiboot2_header
+
+header_start:
+    dd 0xe85250d6 ;multiboot 2 magic number
+    dd 0    ; architecture 0 (protected i386)
+    dd header_end - header_start ;header length
+    ;checksum
+    dd 0x100000000 - (0xe85250d6 + 0 + (header_end - header_start))
+
+    dw 0 ;type
+    dw 0 ;flags
+    dd 8 ;size
+header_end:
+

rust_kernel/rust_boot.asm

@@ -0,0 +1,9 @@
+global start
+
+section .text
+bits 32
+
+start:
+    mov edi, 0xb8000
+    mov dword [edi], 0x2f4b2f4f
+    hlt