Introduce runtime/platform directory for code shared between vm

runtime/bin/globals.h

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-#ifndef BIN_GLOBALS_H_
-#define BIN_GLOBALS_H_
-
-#if defined(_WIN32)
-// Cut down on the amount of stuff that gets included via windows.h.
-#define WIN32_LEAN_AND_MEAN
-#define NOMINMAX
-#define NOKERNEL
-#define NOUSER
-#define NOSERVICE
-#define NOSOUND
-#define NOMCX
-
-#include <windows.h>
-#include <Rpc.h>
-#endif
-
-// Processor architecture detection.  For more info on what's defined, see:
-//   http://msdn.microsoft.com/en-us/library/b0084kay.aspx
-//   http://www.agner.org/optimize/calling_conventions.pdf
-//   or with gcc, run: "echo | gcc -E -dM -"
-#if defined(_M_X64) || defined(__x86_64__)
-#define HOST_ARCH_X64 1
-#define ARCH_IS_64_BIT 1
-#elif defined(_M_IX86) || defined(__i386__)
-#define HOST_ARCH_IA32 1
-#define ARCH_IS_32_BIT 1
-#elif defined(__ARMEL__)
-#define HOST_ARCH_ARM 1
-#define ARCH_IS_32_BIT 1
-#else
-#error Architecture was not detected as supported by Dart.
-#endif
-
-
-#if !defined(TARGET_ARCH_ARM)
-#if !defined(TARGET_ARCH_X64)
-#if !defined(TARGET_ARCH_IA32)
-// No target architecture specified pick the one matching the host architecture.
-#if defined(HOST_ARCH_ARM)
-#define TARGET_ARCH_ARM 1
-#elif defined(HOST_ARCH_X64)
-#define TARGET_ARCH_X64 1
-#elif defined(HOST_ARCH_IA32)
-#define TARGET_ARCH_IA32 1
-#else
-#error Automatic target architecture detection failed.
-#endif
-#endif
-#endif
-#endif
-
-
-// Verify that host and target architectures match, we cannot
-// have a 64 bit Dart VM generating 32 bit code or vice-versa.
-#if defined(TARGET_ARCH_X64)
-#if !defined(ARCH_IS_64_BIT)
-#error Mismatched Host/Target architectures.
-#endif
-#elif defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_ARM)
-#if !defined(ARCH_IS_32_BIT)
-#error Mismatched Host/Target architectures.
-#endif
-#endif
-
-
-// Target OS detection.
-// for more information on predefined macros:
-//   - http://msdn.microsoft.com/en-us/library/b0084kay.aspx
-//   - with gcc, run: "echo | gcc -E -dM -"
-#if defined(__linux__) || defined(__FreeBSD__)
-#define TARGET_OS_LINUX 1
-#elif defined(__APPLE__)
-#define TARGET_OS_MACOS 1
-#elif defined(_WIN32)
-#define TARGET_OS_WINDOWS 1
-#else
-#error Automatic target os detection failed.
-#endif
-
-
-// A macro to disallow the copy constructor and operator= functions.
-// This should be used in the private: declarations for a class.
-#define DISALLOW_COPY_AND_ASSIGN(TypeName)                                     \
-private:                                                                       \
-  TypeName(const TypeName&);                                                   \
-  void operator=(const TypeName&)
-
-
-// A macro to disallow all the implicit constructors, namely the default
-// constructor, copy constructor and operator= functions. This should be
-// used in the private: declarations for a class that wants to prevent
-// anyone from instantiating it. This is especially useful for classes
-// containing only static methods.
-#define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName)                               \
-private:                                                                       \
-  TypeName();                                                                  \
-  DISALLOW_COPY_AND_ASSIGN(TypeName)
-
-
-// Macro to disallow allocation in the C++ heap. This should be used
-// in the private section for a class.
-#define DISALLOW_ALLOCATION()                                                  \
-public:                                                                        \
-  void operator delete(void* pointer) { UNREACHABLE(); }                       \
-private:                                                                       \
-  void* operator new(size_t size);
-
-
-// The USE(x) template is used to silence C++ compiler warnings issued
-// for unused variables.
-template <typename T>
-static inline void USE(T) { }
-
-
-// On Windows the reentrent version of strtok is called
-// strtok_s. Unify on the posix name strtok_r.
-#if defined(TARGET_OS_WINDOWS)
-#define snprintf _snprintf
-#define strtok_r strtok_s
-#endif
-
-#endif  // BIN_GLOBALS_H_