ArmPkg/SemihostLib: Removed leading separator in FileName in SemihostFileOpen()

EFI Shell adds '\\' in front of the filename.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14188 6f19259b-4bc3-4df7-8a09-765794883524

ArmPkg/Library/SemihostLib/SemihostLib.c

@@ -40,6 +40,11 @@ SemihostFileOpen (
     return RETURN_INVALID_PARAMETER;
   }
 
+  // Remove any leading separator (e.g.: '\'). EFI Shell adds one.
+  if (*FileName == '\\') {
+    FileName++;
+  }
+
   OpenBlock.FileName    = FileName;
   OpenBlock.Mode        = Mode;
   OpenBlock.NameLength  = AsciiStrLen(FileName);