ARM: fix constant pool length emitted for disassembler.

R=jfb@chromium.org

Review URL: https://chromiumcodereview.appspot.com/14972007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14607 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/arm/assembler-arm.cc

@@ -3000,7 +3000,8 @@ void Assembler::CheckConstPool(bool force_emit, bool require_jump) {
 
     // Put down constant pool marker "Undefined instruction".
     // The data size helps disassembly know what to print.
-    emit(kConstantPoolMarker | EncodeConstantPoolLength(size_after_marker));
+    emit(kConstantPoolMarker |
+         EncodeConstantPoolLength(size_after_marker / kPointerSize));
 
     if (require_64_bit_align) {
       emit(kConstantPoolMarker);