Imported WebKit commit e89504fa9195b2063b2530961d4b73dd08de3242 (http://svn.webkit.org/repository/webkit/trunk@135485)

Change-Id: I03774e5ac79721c13ffa30d152537a74d0b12e66
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/assembler/MacroAssemblerARMv7.h b/Source/JavaScriptCore/assembler/MacroAssemblerARMv7.h
index 1301038e5..8d7a3a69a 100644
--- a/Source/JavaScriptCore/assembler/MacroAssemblerARMv7.h
+++ b/Source/JavaScriptCore/assembler/MacroAssemblerARMv7.h
@@ -1758,6 +1758,30 @@ public:
     {
         return FunctionPtr(reinterpret_cast<void(*)()>(ARMv7Assembler::readCallTarget(call.dataLocation())));
     }
+    
+    static bool canJumpReplacePatchableBranchPtrWithPatch() { return false; }
+    
+    static CodeLocationLabel startOfBranchPtrWithPatchOnRegister(CodeLocationDataLabelPtr label)
+    {
+        const unsigned twoWordOpSize = 4;
+        return label.labelAtOffset(-twoWordOpSize * 2);
+    }
+    
+    static void revertJumpReplacementToBranchPtrWithPatch(CodeLocationLabel instructionStart, RegisterID, void* initialValue)
+    {
+        ARMv7Assembler::revertJumpTo_movT3(instructionStart.dataLocation(), dataTempRegister, ARMThumbImmediate::makeUInt16(reinterpret_cast<uintptr_t>(initialValue) & 0xffff));
+    }
+    
+    static CodeLocationLabel startOfPatchableBranchPtrWithPatchOnAddress(CodeLocationDataLabelPtr)
+    {
+        UNREACHABLE_FOR_PLATFORM();
+        return CodeLocationLabel();
+    }
+    
+    static void revertJumpReplacementToPatchableBranchPtrWithPatch(CodeLocationLabel, Address, void*)
+    {
+        UNREACHABLE_FOR_PLATFORM();
+    }
 
 protected:
     ALWAYS_INLINE Jump jump()