ARM: Makefile/gyp update allowing better control of ARM specific options.

src/arm/constants-arm.h

 // Copyright 2011 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 26 matching lines @@
 // want to generate them on the simulator too so it makes snapshots that can
 // be used on real hardware.
 #if defined(__THUMB_INTERWORK__) || !defined(__arm__)
 # define USE_THUMB_INTERWORK 1
 #endif
 
 #if defined(__ARM_ARCH_7A__) || \
     defined(__ARM_ARCH_7R__) || \
     defined(__ARM_ARCH_7__)
 # define CAN_USE_ARMV7_INSTRUCTIONS 1
+# define CAN_USE_VFP3_INSTRUCTIONS

[ulan, 2013/04/16 10:12:18]

Does __ARM_ARCH_7__ imply VFP3?

[Rodolph Perfetta, 2013/04/16 10:49:35]

Here yes, V8 requires VFP support and VFP + ARMv7 imply VFPv3

 #endif
 
-#if defined(__ARM_ARCH_6__) ||   \
-    defined(__ARM_ARCH_6J__) ||  \
-    defined(__ARM_ARCH_6K__) ||  \
-    defined(__ARM_ARCH_6Z__) ||  \
+#if defined(__ARM_ARCH_6__)   ||   \
+    defined(__ARM_ARCH_6J__)  ||  \
+    defined(__ARM_ARCH_6K__)  ||  \
+    defined(__ARM_ARCH_6Z__)  ||  \
     defined(__ARM_ARCH_6ZK__) || \
     defined(__ARM_ARCH_6T2__) || \
     defined(CAN_USE_ARMV7_INSTRUCTIONS)
 # define CAN_USE_ARMV6_INSTRUCTIONS 1
 #endif
 
-#if defined(__ARM_ARCH_5T__)             || \
-    defined(__ARM_ARCH_5TE__)            || \
-    defined(__ARM_ARCH_5TEJ__)           || \
+#if defined(__ARM_ARCH_5__)    || \
+    defined(__ARM_ARCH_5T__)   || \
+    defined(__ARM_ARCH_5TE__)  || \
+    defined(__ARM_ARCH_5TEJ__) || \
     defined(CAN_USE_ARMV6_INSTRUCTIONS)
 # define CAN_USE_ARMV5_INSTRUCTIONS 1
 # define CAN_USE_THUMB_INSTRUCTIONS 1
 #endif
 
 // Simulator should support ARM5 instructions and unaligned access by default.
 #if !defined(__arm__)
 # define CAN_USE_ARMV5_INSTRUCTIONS 1
 # define CAN_USE_THUMB_INSTRUCTIONS 1
 
@@ skipping 707 matching lines @@
   static int Number(const char* name, bool* is_double);
 
  private:
   static const char* names_[kNumVFPRegisters];
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_CONSTANTS_ARM_H_