[SOS][ARM/Linux] Enable clru SOS command (dotnet/coreclr#6477)

* Enable clru SOS command on ARM/Linux

* Set thumb bit on ARM/Linux


Commit migrated from dotnet/coreclr@a734248

src/coreclr/src/ToolBox/SOS/Strike/disasmARM.cpp

@@ -250,7 +250,6 @@ void ARMMachine::IsReturnAddress(TADDR retAddr, TADDR* whereCalled) const
     }
 }
 
-#ifndef FEATURE_PAL
 
 // Return 0 for non-managed call.  Otherwise return MD address.
 static TADDR MDForCall (TADDR callee)
@@ -272,8 +271,14 @@ static TADDR MDForCall (TADDR callee)
 // Determine if a value is MT/MD/Obj
 static void HandleValue(TADDR value)
 {
+#ifndef FEATURE_PAL
     // remove the thumb bit (if set)
     value = value & ~1;
+#else
+    // set the thumb bit (if not set)
+    value = value | 1;
+#endif //!FEATURE_PAL
+
     // A MethodTable?
     if (IsMethodTable(value))
     {
@@ -336,8 +341,6 @@ static void HandleValue(TADDR value)
     }
 }
 
-#endif // !FEATURE_PAL
-
 /**********************************************************************\
 * Routine Description:                                                 *
 *                                                                      *
@@ -355,7 +358,6 @@ void ARMMachine::Unassembly (
     BOOL bSuppressLines,
     BOOL bDisplayOffsets) const
 {
-#ifndef FEATURE_PAL
     ULONG_PTR PC = PCBegin;
     char line[1024];
     char *ptr;
@@ -383,6 +385,7 @@ void ARMMachine::Unassembly (
             }
         }
 
+#ifndef FEATURE_PAL
         //
         // Print out any GC information corresponding to the current instruction offset.
         //
@@ -397,7 +400,7 @@ void ARMMachine::Unassembly (
                 SwitchToFiber(pGCEncodingInfo->pvGCTableFiber);
             }
         }
-
+#endif //!FEATURE_PAL
         //
         // Print out any EH info corresponding to the current offset
         //
@@ -529,7 +532,6 @@ void ARMMachine::Unassembly (
 
         ExtOut ("\n");
     }
-#endif // !FEATURE_PAL
 }
 
 #if 0 // @ARMTODO: Figure out how to extract this information under CoreARM