OvmfPkg XenBusDxe: Convert X64/TestAndClearBit.asm to NASM

The BaseTools/Scripts/ConvertMasmToNasm.py script was used to convert
X64/TestAndClearBit.asm to X64/TestAndClearBit.nasm

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16319 6f19259b-4bc3-4df7-8a09-765794883524

OvmfPkg/XenBusDxe/X64/TestAndClearBit.S

@@ -1,12 +0,0 @@
-# INT32
-# EFIAPI
-# TestAndClearBit (
-#   IN  INT32 Bit,                // rcx
-#   IN  volatile VOID* Address    // rdx
-#   );
-ASM_GLOBAL ASM_PFX(TestAndClearBit)
-ASM_PFX(TestAndClearBit):
-  lock
-  btrl %ecx, (%rdx)
-  sbbl %eax, %eax
-  ret

OvmfPkg/XenBusDxe/X64/TestAndClearBit.nasm

@@ -1,4 +1,5 @@
-.code
+DEFAULT REL
+SECTION .text
 
 ; INT32
 ; EFIAPI
@@ -6,11 +7,10 @@
 ;   IN  INT32 Bit,                // rcx
 ;   IN  volatile VOID* Address    // rdx
 ;   );
-TestAndClearBit PROC
+global ASM_PFX(TestAndClearBit)
+ASM_PFX(TestAndClearBit):
   lock
   btr [rdx], ecx
   sbb eax, eax
   ret
-TestAndClearBit ENDP
 
-END