ARM64: Fix ASM_LOCATION and the like.

src/checks.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_CHECKS_H_
 #define V8_CHECKS_H_
 
 #include <string.h>
 
 #include "../include/v8stdint.h"
+#include "base/build_config.h"
 
 extern "C" void V8_Fatal(const char* file, int line, const char* format, ...);
 
 
 // The FATAL, UNREACHABLE and UNIMPLEMENTED macros are useful during
 // development, but they should not be relied on in the final product.
 #ifdef DEBUG
 #define FATAL(msg)                              \
   V8_Fatal(__FILE__, __LINE__, "%s", (msg))
 #define UNIMPLEMENTED()                         \
   V8_Fatal(__FILE__, __LINE__, "unimplemented code")
 #define UNREACHABLE()                           \
   V8_Fatal(__FILE__, __LINE__, "unreachable code")
 #else
 #define FATAL(msg)                              \
   V8_Fatal("", 0, "%s", (msg))
 #define UNIMPLEMENTED()                         \
   V8_Fatal("", 0, "unimplemented code")
 #define UNREACHABLE() ((void) 0)
 #endif
 
 // Simulator specific helpers.
-#if defined(USE_SIMULATOR) && defined(V8_TARGET_ARCH_ARM64)
+// We can't use USE_SIMULATOR here because it isn't defined yet.
+#if V8_TARGET_ARCH_ARM64 && !V8_HOST_ARCH_ARM64
   // TODO(all): If possible automatically prepend an indicator like
   // UNIMPLEMENTED or LOCATION.
   #define ASM_UNIMPLEMENTED(message)                                         \
   __ Debug(message, __LINE__, NO_PARAM)
   #define ASM_UNIMPLEMENTED_BREAK(message)                                   \
   __ Debug(message, __LINE__,                                                \
            FLAG_ignore_asm_unimplemented_break ? NO_PARAM : BREAK)
   #define ASM_LOCATION(message)                                              \
   __ Debug("LOCATION: " message, __LINE__, NO_PARAM)
 #else
@@ skipping 244 matching lines @@
 
 // "Extra checks" are lightweight checks that are enabled in some release
 // builds.
 #ifdef ENABLE_EXTRA_CHECKS
 #define EXTRA_CHECK(condition) CHECK(condition)
 #else
 #define EXTRA_CHECK(condition) ((void) 0)
 #endif
 
 #endif  // V8_CHECKS_H_