Update markdown and tabs and stuff

pages/2012-06-18-C-Headers-In-Asm.md

@@ -6,13 +6,14 @@ tags: [osdev]
 Something that always annoyed me is how hard it is to synchronize constants
 between assembly and c code.  In assembler, you define a constant value as
 
-	EXACT_PI equ 3
-{: .prettyprint .lang-nasm}
+    :::nasm
+    EXACT_PI equ 3
 
 and in c
 
-	#define EXACT_PI 3
-{: .prettyprint .lang-c}
+    :::c
+    #define EXACT_PI 3
+
 As is usually the case with things that annoy me, there is of course a solution
 to this, as I found out today.  The solution is the c preprocessor.
 
@@ -30,27 +31,27 @@ Well, here's a minimal (non-working) example:
 
 _myAsmFile.asm_
 
-	#include <header.h>
-	 
-	mov eax, EXACT_PI
-{: .prettyprint .lang-nasm}
+    :::nasm
+    #include <header.h>
+
+    mov eax, EXACT_PI
 
 _include/header.h_
 
-	#pragma once
-	 
-	#define EXACT_PI 3
-	 
-	#ifndef __ASSEMBLER__
-	// This is not evaluated if header.h is included from an assembly file.
-	#endif
-{: .prettyprint .lang-c}
+    :::c
+    #pragma once
+
+    #define EXACT_PI 3
+
+    #ifndef __ASSEMBLER__
+    // This is not evaluated if header.h is included from an assembly file.
+    #endif
 
 This is compiled through:
 
-	cpp -I include -x assembler-with-cpp myAsmFile.asm -o myAsmFile.s
-	nasm myAsmFile.s
-{: .prettyprint}
+    :::bash
+    $ cpp -I include -x assembler-with-cpp myAsmFile.asm -o myAsmFile.s
+    $ nasm myAsmFile.s
 
 The _-x_-flag tells the preprocessor what type of file the following input
 files are. _assembler-with-cpp_ means _cpp_ will ignore everything but the