1. Updated function headers in all assembly files.

2. Split x86LowLevel.c into a bunch of C files to make images linked with BaseLib smaller.
3. Fixed a few minor bugs.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1066 6f19259b-4bc3-4df7-8a09-765794883524

MdePkg/Library/BaseLib/Ia32/DivU64x32.S

@@ -19,17 +19,23 @@
 #
 #------------------------------------------------------------------------------
 
-    .386: 
-    .code: 
-
 .global _InternalMathDivU64x32
+
+#------------------------------------------------------------------------------
+# UINT64
+# EFIAPI
+# InternalMathDivU64x32 (
+#   IN      UINT64                    Dividend,
+#   IN      UINT32                    Divisor
+#   );
+#------------------------------------------------------------------------------
 _InternalMathDivU64x32:
-    movl    8(%esp),%eax
-    movl    12(%esp),%ecx
-    xorl    %edx,%edx
+    movl    8(%esp), %eax
+    movl    12(%esp), %ecx
+    xorl    %edx, %edx
     divl    %ecx
-    pushl   %eax
-    movl    8(%esp),%eax
+    push    %eax
+    movl    8(%esp), %eax
     divl    %ecx
-    popl    %edx
+    pop     %edx
     ret