Upgrade to 3.29
Update V8 to 3.29.88.17 and update makefiles to support building on
all the relevant platforms.
Bug: 17370214
Change-Id: Ia3407c157fd8d72a93e23d8318ccaf6ecf77fa4e
diff --git a/src/base/atomicops.h b/src/base/atomicops.h
new file mode 100644
index 0000000..eba172f
--- /dev/null
+++ b/src/base/atomicops.h
@@ -0,0 +1,163 @@
+// Copyright 2010 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.
+
+// The routines exported by this module are subtle. If you use them, even if
+// you get the code right, it will depend on careful reasoning about atomicity
+// and memory ordering; it will be less readable, and harder to maintain. If
+// you plan to use these routines, you should have a good reason, such as solid
+// evidence that performance would otherwise suffer, or there being no
+// alternative. You should assume only properties explicitly guaranteed by the
+// specifications in this file. You are almost certainly _not_ writing code
+// just for the x86; if you assume x86 semantics, x86 hardware bugs and
+// implementations on other archtectures will cause your code to break. If you
+// do not know what you are doing, avoid these routines, and use a Mutex.
+//
+// It is incorrect to make direct assignments to/from an atomic variable.
+// You should use one of the Load or Store routines. The NoBarrier
+// versions are provided when no barriers are needed:
+// NoBarrier_Store()
+// NoBarrier_Load()
+// Although there are currently no compiler enforcement, you are encouraged
+// to use these.
+//
+
+#ifndef V8_BASE_ATOMICOPS_H_
+#define V8_BASE_ATOMICOPS_H_
+
+#include "include/v8stdint.h"
+#include "src/base/build_config.h"
+
+#if defined(_WIN32) && defined(V8_HOST_ARCH_64_BIT)
+// windows.h #defines this (only on x64). This causes problems because the
+// public API also uses MemoryBarrier at the public name for this fence. So, on
+// X64, undef it, and call its documented
+// (http://msdn.microsoft.com/en-us/library/windows/desktop/ms684208.aspx)
+// implementation directly.
+#undef MemoryBarrier
+#endif
+
+namespace v8 {
+namespace base {
+
+typedef char Atomic8;
+typedef int32_t Atomic32;
+#ifdef V8_HOST_ARCH_64_BIT
+// We need to be able to go between Atomic64 and AtomicWord implicitly. This
+// means Atomic64 and AtomicWord should be the same type on 64-bit.
+#if defined(__ILP32__)
+typedef int64_t Atomic64;
+#else
+typedef intptr_t Atomic64;
+#endif
+#endif
+
+// Use AtomicWord for a machine-sized pointer. It will use the Atomic32 or
+// Atomic64 routines below, depending on your architecture.
+typedef intptr_t AtomicWord;
+
+// Atomically execute:
+// result = *ptr;
+// if (*ptr == old_value)
+// *ptr = new_value;
+// return result;
+//
+// I.e., replace "*ptr" with "new_value" if "*ptr" used to be "old_value".
+// Always return the old value of "*ptr"
+//
+// This routine implies no memory barriers.
+Atomic32 NoBarrier_CompareAndSwap(volatile Atomic32* ptr,
+ Atomic32 old_value,
+ Atomic32 new_value);
+
+// Atomically store new_value into *ptr, returning the previous value held in
+// *ptr. This routine implies no memory barriers.
+Atomic32 NoBarrier_AtomicExchange(volatile Atomic32* ptr, Atomic32 new_value);
+
+// Atomically increment *ptr by "increment". Returns the new value of
+// *ptr with the increment applied. This routine implies no memory barriers.
+Atomic32 NoBarrier_AtomicIncrement(volatile Atomic32* ptr, Atomic32 increment);
+
+Atomic32 Barrier_AtomicIncrement(volatile Atomic32* ptr,
+ Atomic32 increment);
+
+// These following lower-level operations are typically useful only to people
+// implementing higher-level synchronization operations like spinlocks,
+// mutexes, and condition-variables. They combine CompareAndSwap(), a load, or
+// a store with appropriate memory-ordering instructions. "Acquire" operations
+// ensure that no later memory access can be reordered ahead of the operation.
+// "Release" operations ensure that no previous memory access can be reordered
+// after the operation. "Barrier" operations have both "Acquire" and "Release"
+// semantics. A MemoryBarrier() has "Barrier" semantics, but does no memory
+// access.
+Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr,
+ Atomic32 old_value,
+ Atomic32 new_value);
+Atomic32 Release_CompareAndSwap(volatile Atomic32* ptr,
+ Atomic32 old_value,
+ Atomic32 new_value);
+
+void MemoryBarrier();
+void NoBarrier_Store(volatile Atomic8* ptr, Atomic8 value);
+void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value);
+void Acquire_Store(volatile Atomic32* ptr, Atomic32 value);
+void Release_Store(volatile Atomic32* ptr, Atomic32 value);
+
+Atomic8 NoBarrier_Load(volatile const Atomic8* ptr);
+Atomic32 NoBarrier_Load(volatile const Atomic32* ptr);
+Atomic32 Acquire_Load(volatile const Atomic32* ptr);
+Atomic32 Release_Load(volatile const Atomic32* ptr);
+
+// 64-bit atomic operations (only available on 64-bit processors).
+#ifdef V8_HOST_ARCH_64_BIT
+Atomic64 NoBarrier_CompareAndSwap(volatile Atomic64* ptr,
+ Atomic64 old_value,
+ Atomic64 new_value);
+Atomic64 NoBarrier_AtomicExchange(volatile Atomic64* ptr, Atomic64 new_value);
+Atomic64 NoBarrier_AtomicIncrement(volatile Atomic64* ptr, Atomic64 increment);
+Atomic64 Barrier_AtomicIncrement(volatile Atomic64* ptr, Atomic64 increment);
+
+Atomic64 Acquire_CompareAndSwap(volatile Atomic64* ptr,
+ Atomic64 old_value,
+ Atomic64 new_value);
+Atomic64 Release_CompareAndSwap(volatile Atomic64* ptr,
+ Atomic64 old_value,
+ Atomic64 new_value);
+void NoBarrier_Store(volatile Atomic64* ptr, Atomic64 value);
+void Acquire_Store(volatile Atomic64* ptr, Atomic64 value);
+void Release_Store(volatile Atomic64* ptr, Atomic64 value);
+Atomic64 NoBarrier_Load(volatile const Atomic64* ptr);
+Atomic64 Acquire_Load(volatile const Atomic64* ptr);
+Atomic64 Release_Load(volatile const Atomic64* ptr);
+#endif // V8_HOST_ARCH_64_BIT
+
+} } // namespace v8::base
+
+// Include our platform specific implementation.
+#if defined(THREAD_SANITIZER)
+#include "src/base/atomicops_internals_tsan.h"
+#elif defined(_MSC_VER) && (V8_HOST_ARCH_IA32 || V8_HOST_ARCH_X64)
+#include "src/base/atomicops_internals_x86_msvc.h"
+#elif defined(__APPLE__)
+#include "src/base/atomicops_internals_mac.h"
+#elif defined(__GNUC__) && V8_HOST_ARCH_ARM64
+#include "src/base/atomicops_internals_arm64_gcc.h"
+#elif defined(__GNUC__) && V8_HOST_ARCH_ARM
+#include "src/base/atomicops_internals_arm_gcc.h"
+#elif defined(__GNUC__) && (V8_HOST_ARCH_IA32 || V8_HOST_ARCH_X64)
+#include "src/base/atomicops_internals_x86_gcc.h"
+#elif defined(__GNUC__) && V8_HOST_ARCH_MIPS
+#include "src/base/atomicops_internals_mips_gcc.h"
+#elif defined(__GNUC__) && V8_HOST_ARCH_MIPS64
+#include "src/base/atomicops_internals_mips64_gcc.h"
+#else
+#error "Atomic operations are not supported on your platform"
+#endif
+
+// On some platforms we need additional declarations to make
+// AtomicWord compatible with our other Atomic* types.
+#if defined(__APPLE__) || defined(__OpenBSD__)
+#include "src/base/atomicops_internals_atomicword_compat.h"
+#endif
+
+#endif // V8_BASE_ATOMICOPS_H_