Allow forcing the use of a simulator from the build script...

src/v8.cc

 // Copyright 2006-2009 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 51 matching lines @@
   Logger::Setup();
 
   CpuProfiler::Setup();
   HeapProfiler::Setup();
 
   // Setup the platform OS support.
   OS::Setup();
 
   // Initialize other runtime facilities
 #if defined(USE_SIMULATOR)
+#if defined(V8_TARGET_ARCH_ARM)
   ::assembler::arm::Simulator::Initialize();
+#elif defined(V8_TARGET_ARCH_MIPS)
+  ::assembler::mips::Simulator::Initialize();
+#endif
 #endif
 
   { // NOLINT
     // Ensure that the thread has a valid stack guard.  The v8::Locker object
     // will ensure this too, but we don't have to use lockers if we are only
     // using one thread.
     ExecutionAccess lock;
     StackGuard::InitThread(lock);
   }
 
@@ skipping 136 matching lines @@
   // ( 1.(20 0s)(32 random bits) x 2^20 ) - (1.0 x 2^20)).
   const double binary_million = 1048576.0;
   r->double_value = binary_million;
   r->uint64_t_value |=  random_bits;
   r->double_value -= binary_million;
 
   return heap_number;
 }
 
 } }  // namespace v8::internal