First draft of the sh4 port

src/platform-posix.cc

 // Copyright 2012 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 131 matching lines @@
 UNARY_MATH_FUNCTION(cos, CreateTranscendentalFunction(TranscendentalCache::COS))
 UNARY_MATH_FUNCTION(tan, CreateTranscendentalFunction(TranscendentalCache::TAN))
 UNARY_MATH_FUNCTION(log, CreateTranscendentalFunction(TranscendentalCache::LOG))
 UNARY_MATH_FUNCTION(sqrt, CreateSqrtFunction())
 
 #undef MATH_FUNCTION
 
 
 double OS::nan_value() {
   // NAN from math.h is defined in C99 and not in POSIX.
+
+#if defined(V8_TARGET_ARCH_SH4)
+  // return a qNaN as exepcted by the v8 core. In sh4 tool chain, the NAN macro

[Jakob Kummerow, 2012/11/07 11:18:24]

nit: "Return", "expected"

[remi.duraffort, 2012/11/07 11:59:26]

Fixed.

+  // is defined to be an sNaN while the C specifications require a qNaN.
+  union {
+    uint64_t ui64;
+    double d;
+  } value;
+  value.ui64 = (static_cast<uint64_t>(0x7ff00000) << 32) | 0x00000001;
+  return value.d;
+#else
   return NAN;
+#endif
 }
 
 
 int OS::GetCurrentProcessId() {
   return static_cast<int>(getpid());
 }
 
 
 // ----------------------------------------------------------------------------
 // POSIX date/time support.
@@ skipping 378 matching lines @@
   return ntohl(value);
 }
 
 
 Socket* OS::CreateSocket() {
   return new POSIXSocket();
 }
 
 
 } }  // namespace v8::internal