Move utils.h and utils.cc from runtime/vm to runtime/platform

runtime/vm/globals.h

 // Copyright (c) 2012, 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 VM_GLOBALS_H_
 #define VM_GLOBALS_H_
 
 // This file contains global definitions for the VM library only. Anything that

[Ivan Posva, 2012/01/13 23:51:01]

Are there other parts in this file that do not depend on the vm/ implementation
and could also move into the platform/ header?

[Søren Gjesse, 2012/01/16 10:53:00]

Moved the template functions implicit_cast, down_cast, bit_cast and bit_copy.

This leaves only ARRAY_SIZE, kOffsetOfPtr, OFFSET_OF,  OFFSET_OF_RETURNED_VALUE,
cpp_vtable and ALIGN16 in vm/globals.h.

 // is more globally useful should be added to 'vm/globals.h'.
 
 #include "platform/globals.h"
 
 #if defined(_WIN32)
 // Undef conflicting defines.
 #undef PARITY_EVEN
 #undef PARITY_ODD
 #undef near
 #endif
 
 // The following #defines are invalidated.
 #undef OVERFLOW  // From math.h conflicts in constants_ia32.h
 
 namespace dart {
 
-// 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
-
-
-// Printf format for intptr_t on Windows.
-#if !defined(PRIxPTR) && defined(TARGET_OS_WINDOWS)
-#if defined(ARCH_IS_32_BIT)
-#define PRIxPTR "x"
-#else
-#define PRIxPTR "llx"
-#endif  // defined(ARCH_IS_32_BIT)
-#endif  // !defined(PRIxPTR) && defined(TARGET_OS_WINDOWS)
-
-
-// Suffixes for 64-bit integer literals.
-#ifdef _MSC_VER
-#define DART_INT64_C(x) x##I64
-#define DART_UINT64_C(x) x##UI64
-#else
-#define DART_INT64_C(x) x##LL
-#define DART_UINT64_C(x) x##ULL
-#endif
-
-
-// The following macro works on both 32 and 64-bit platforms.
-// Usage: instead of writing 0x1234567890123456
-//      write DART_2PART_UINT64_C(0x12345678,90123456);
-#define DART_2PART_UINT64_C(a, b)                                              \
-                 (((static_cast<uint64_t>(a) << 32) + 0x##b##u))
-
-
-// Types for native machine words. Guaranteed to be able to hold pointers and
-// integers.
-typedef intptr_t word;
-typedef uintptr_t uword;
-
-// A type large enough to contain the value of the C++ vtable. This is needed
-// to support the handle operations.
-typedef uword cpp_vtable;
-
-// Byte sizes.
-const int kWordSize = sizeof(word);
-#ifdef ARCH_IS_32_BIT
-const int kWordSizeLog2 = 2;
-#else
-const int kWordSizeLog2 = 3;
-#endif
-
-// Bit sizes.
-const int kBitsPerByte = 8;
-const int kBitsPerByteLog2 = 3;
-const int kBitsPerWord = kWordSize * kBitsPerByte;
-
-// System-wide named constants.
-const int KB = 1024;
-const int MB = KB * KB;
-const int GB = KB * KB * KB;
-const intptr_t kIntptrOne = 1;
-const intptr_t kIntptrMin = (kIntptrOne << (kBitsPerWord - 1));
-const intptr_t kIntptrMax = ~kIntptrMin;
-
-// Time constants.
-const int kMillisecondsPerSecond = 1000;
-const int kMicrosecondsPerMillisecond = 1000;
-const int kMicrosecondsPerSecond = (kMicrosecondsPerMillisecond *
-                                    kMillisecondsPerSecond);
-const int kNanosecondsPerMicrosecond = 1000;
-const int kNanosecondsPerMillisecond = (kNanosecondsPerMicrosecond *
-                                        kMicrosecondsPerMillisecond);
-const int kNanosecondsPerSecond = (kNanosecondsPerMicrosecond *
-                                   kMicrosecondsPerSecond);
-
 // The expression ARRAY_SIZE(array) is a compile-time constant of type
 // size_t which represents the number of elements of the given
 // array. You should only use ARRAY_SIZE on statically allocated
 // arrays.
 #define ARRAY_SIZE(array)                                       \
   ((sizeof(array) / sizeof(*(array))) /                         \
   static_cast<intptr_t>(!(sizeof(array) % sizeof(*(array)))))
 
 
 // The expression OFFSET_OF(type, field) computes the byte-offset of
@@ skipping 124 matching lines @@
 // contants are 16 byte aligned.
 #if defined(TARGET_OS_WINDOWS)
 #define ALIGN16 __declspec(align(16))
 #else
 #define ALIGN16 __attribute__((aligned(16)))
 #endif
 
 }  // namespace dart
 
 #endif  // VM_GLOBALS_H_