Port of optimized ICs for external and pixel arrays from ia32 to ARM.

src/globals.h

 // 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 156 matching lines @@
 const int kFailureTag = 3;
 const int kFailureTagSize = 2;
 const intptr_t kFailureTagMask = (1 << kFailureTagSize) - 1;
 
 
 const int kBitsPerByte = 8;
 const int kBitsPerByteLog2 = 3;
 const int kBitsPerPointer = kPointerSize * kBitsPerByte;
 const int kBitsPerInt = kIntSize * kBitsPerByte;
 
+// IEEE 754 single precision floating point number bit layout.
+const uint32_t kBinary32SignMask = 0x80000000u;
+const uint32_t kBinary32ExponentMask = 0x7f800000u;
+const uint32_t kBinary32MantissaMask = 0x007fffffu;
+const int kBinary32ExponentBias = 127;
+const int kBinary32MaxExponent  = 0xFE;
+const int kBinary32MinExponent  = 0x01;
+const int kBinary32MantissaBits = 23;
+const int kBinary32ExponentShift = 23;
 
 // Zap-value: The value used for zapping dead objects.
 // Should be a recognizable hex value tagged as a heap object pointer.
 #ifdef V8_HOST_ARCH_64_BIT
 const Address kZapValue =
     reinterpret_cast<Address>(V8_UINT64_C(0xdeadbeedbeadbeed));
 const Address kHandleZapValue =
     reinterpret_cast<Address>(V8_UINT64_C(0x1baddead0baddead));
 const Address kFromSpaceZapValue =
     reinterpret_cast<Address>(V8_UINT64_C(0x1beefdad0beefdad));
@@ skipping 395 matching lines @@
                   CMOV = 15,   // x86
                   RDTSC = 4,   // x86
                   CPUID = 10,  // x86
                   VFP3 = 1,    // ARM
                   ARMv7 = 2,   // ARM
                   SAHF = 0};   // x86
 
 } }  // namespace v8::internal
 
 #endif  // V8_GLOBALS_H_