X64: Create test JS-function and call it.

src/x64/assembler-x64-inl.h

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 233 matching lines @@
   UNIMPLEMENTED();  // IA32 code below.
   ASSERT(IsCallInstruction());
   return reinterpret_cast<Object**>(pc_ + 1);
 }
 
 // -----------------------------------------------------------------------------
 // Implementation of Operand
 
 void Operand::set_modrm(int mod, Register rm) {
   ASSERT((mod & -4) == 0);
-  buf_[0] = mod << 6 | (rm.code() & 0x7);
+  buf_[0] = (mod << 6) | (rm.code() & 0x7);
   // Set REX.B to the high bit of rm.code().
   rex_ |= (rm.code() >> 3);
 }
 
 
 void Operand::set_sib(ScaleFactor scale, Register index, Register base) {
   ASSERT(len_ == 1);
   ASSERT(is_uint2(scale));
   // Use SIB with no index register only for base rsp or r12.
   ASSERT(!index.is(rsp) || base.is(rsp) || base.is(r12));
@@ skipping 14 matching lines @@
   ASSERT(len_ == 1 || len_ == 2);
   int32_t* p = reinterpret_cast<int32_t*>(&buf_[len_]);
   *p = disp;
   len_ += sizeof(int32_t);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_ASSEMBLER_X64_INL_H_