Version 2.5.2

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 75 matching lines @@
 #endif
 #if (defined(V8_TARGET_ARCH_ARM) && \
     !(defined(V8_HOST_ARCH_IA32) || defined(V8_HOST_ARCH_ARM)))
 #error Target architecture arm is only supported on arm and ia32 host
 #endif
 #if (defined(V8_TARGET_ARCH_MIPS) && \
     !(defined(V8_HOST_ARCH_IA32) || defined(V8_HOST_ARCH_MIPS)))
 #error Target architecture mips is only supported on mips and ia32 host
 #endif
 
+// Determine whether we are running in a simulated environment.
+// Setting USE_SIMULATOR explicitly from the build script will force
+// the use of a simulated environment.
+#if !defined(USE_SIMULATOR)
+#if (defined(V8_TARGET_ARCH_ARM) && !defined(V8_HOST_ARCH_ARM))
+#define USE_SIMULATOR 1
+#endif
+#if (defined(V8_TARGET_ARCH_MIPS) && !defined(V8_HOST_ARCH_MIPS))
+#define USE_SIMULATOR 1
+#endif
+#endif
+
 // Define unaligned read for the target architectures supporting it.
 #if defined(V8_TARGET_ARCH_X64) || defined(V8_TARGET_ARCH_IA32)
 #define V8_TARGET_CAN_READ_UNALIGNED 1
 #elif V8_TARGET_ARCH_ARM
 // Some CPU-OS combinations allow unaligned access on ARM. We assume
 // that unaligned accesses are not allowed unless the build system
 // defines the CAN_USE_UNALIGNED_ACCESSES macro to be non-zero.
 #if CAN_USE_UNALIGNED_ACCESSES
 #define V8_TARGET_CAN_READ_UNALIGNED 1
 #endif
@@ skipping 76 matching lines @@
 const int kCharSize     = sizeof(char);      // NOLINT
 const int kShortSize    = sizeof(short);     // NOLINT
 const int kIntSize      = sizeof(int);       // NOLINT
 const int kDoubleSize   = sizeof(double);    // NOLINT
 const int kPointerSize  = sizeof(void*);     // NOLINT
 const int kIntptrSize   = sizeof(intptr_t);  // NOLINT
 
 #if V8_HOST_ARCH_64_BIT
 const int kPointerSizeLog2 = 3;
 const intptr_t kIntptrSignBit = V8_INT64_C(0x8000000000000000);
+const uintptr_t kUintptrAllBitsSet = V8_UINT64_C(0xFFFFFFFFFFFFFFFF);
 #else
 const int kPointerSizeLog2 = 2;
 const intptr_t kIntptrSignBit = 0x80000000;
+const uintptr_t kUintptrAllBitsSet = 0xFFFFFFFFu;
 #endif
 
 // Mask for the sign bit in a smi.
 const intptr_t kSmiSignMask = kIntptrSignBit;
 
 const int kObjectAlignmentBits = kPointerSizeLog2;
 const intptr_t kObjectAlignment = 1 << kObjectAlignmentBits;
 const intptr_t kObjectAlignmentMask = kObjectAlignment - 1;
 
 // Desired alignment for pointers.
@@ skipping 112 matching lines @@
 class LargeObjectSpace;
 template <typename T, class P = FreeStoreAllocationPolicy> class List;
 class LookupResult;
 class MacroAssembler;
 class Map;
 class MapSpace;
 class MarkCompactCollector;
 class NewSpace;
 class NodeVisitor;
 class Object;
+class MaybeObject;
 class OldSpace;
 class Property;
 class Proxy;
 class RegExpNode;
 struct RegExpCompileData;
 class RegExpTree;
 class RegExpCompiler;
 class RegExpVisitor;
 class Scope;
 template<class Allocator = FreeStoreAllocationPolicy> class ScopeInfo;
@@ skipping 198 matching lines @@
     unsigned int sign     :1;
     unsigned int exp      :11;
     unsigned int man_high :20;
     unsigned int man_low  :32;
   } bits;
 };
 
 
 // AccessorCallback
 struct AccessorDescriptor {
-  Object* (*getter)(Object* object, void* data);
-  Object* (*setter)(JSObject* object, Object* value, void* data);
+  MaybeObject* (*getter)(Object* object, void* data);
+  MaybeObject* (*setter)(JSObject* object, Object* value, void* data);
   void* data;
 };
 
 
 // Logging and profiling.
 // A StateTag represents a possible state of the VM.  When compiled with
 // ENABLE_VMSTATE_TRACKING, the logger maintains a stack of these.
 // Creating a VMState object enters a state by pushing on the stack, and
 // destroying a VMState object leaves a state by popping the current state
 // from the stack.
@@ skipping 151 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_