2012-02-22 12:26:36 +00:00
|
|
|
// Copyright 2012 the V8 project authors. All rights reserved.
|
2008-07-03 15:10:15 +00:00
|
|
|
// 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
|
|
|
|
// with the distribution.
|
|
|
|
// * Neither the name of Google Inc. nor the names of its
|
|
|
|
// contributors may be used to endorse or promote products derived
|
|
|
|
// from this software without specific prior written permission.
|
|
|
|
//
|
|
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
|
|
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
|
|
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
|
|
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
|
|
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
|
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
|
|
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
|
|
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
|
|
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
|
|
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
|
|
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
|
2008-11-05 19:18:10 +00:00
|
|
|
#ifndef V8_GLOBALS_H_
|
|
|
|
#define V8_GLOBALS_H_
|
|
|
|
|
2013-08-23 07:32:25 +00:00
|
|
|
#include "../include/v8stdint.h"
|
2011-09-07 12:39:53 +00:00
|
|
|
|
2014-04-23 11:51:28 +00:00
|
|
|
#include "base/macros.h"
|
|
|
|
|
2013-07-31 07:51:46 +00:00
|
|
|
// Unfortunately, the INFINITY macro cannot be used with the '-pedantic'
|
|
|
|
// warning flag and certain versions of GCC due to a bug:
|
|
|
|
// http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11931
|
|
|
|
// For now, we use the more involved template-based version from <limits>, but
|
|
|
|
// only when compiling with GCC versions affected by the bug (2.96.x - 4.0.x)
|
2013-08-26 08:17:38 +00:00
|
|
|
#if V8_CC_GNU && V8_GNUC_PREREQ(2, 96, 0) && !V8_GNUC_PREREQ(4, 1, 0)
|
|
|
|
# include <limits> // NOLINT
|
|
|
|
# define V8_INFINITY std::numeric_limits<double>::infinity()
|
2014-01-28 19:11:13 +00:00
|
|
|
#elif V8_LIBC_MSVCRT
|
2013-08-21 10:43:50 +00:00
|
|
|
# define V8_INFINITY HUGE_VAL
|
2013-08-23 07:32:25 +00:00
|
|
|
#else
|
|
|
|
# define V8_INFINITY INFINITY
|
2013-07-30 10:36:58 +00:00
|
|
|
#endif
|
|
|
|
|
2013-07-31 07:51:46 +00:00
|
|
|
namespace v8 {
|
|
|
|
namespace internal {
|
2013-07-29 12:12:39 +00:00
|
|
|
|
2013-07-31 07:51:46 +00:00
|
|
|
// Processor architecture detection. For more info on what's defined, see:
|
2009-05-05 12:06:20 +00:00
|
|
|
// 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__)
|
2013-07-31 07:51:46 +00:00
|
|
|
#if defined(__native_client__)
|
2013-04-17 08:27:40 +00:00
|
|
|
// For Native Client builds of V8, use V8_TARGET_ARCH_ARM, so that V8
|
|
|
|
// generates ARM machine code, together with a portable ARM simulator
|
|
|
|
// compiled for the host architecture in question.
|
|
|
|
//
|
|
|
|
// Since Native Client is ILP-32 on all architectures we use
|
|
|
|
// V8_HOST_ARCH_IA32 on both 32- and 64-bit x86.
|
2013-07-31 07:51:46 +00:00
|
|
|
#define V8_HOST_ARCH_IA32 1
|
|
|
|
#define V8_HOST_ARCH_32_BIT 1
|
|
|
|
#define V8_HOST_CAN_READ_UNALIGNED 1
|
|
|
|
#else
|
|
|
|
#define V8_HOST_ARCH_X64 1
|
|
|
|
#define V8_HOST_ARCH_64_BIT 1
|
|
|
|
#define V8_HOST_CAN_READ_UNALIGNED 1
|
|
|
|
#endif // __native_client__
|
2009-05-05 12:06:20 +00:00
|
|
|
#elif defined(_M_IX86) || defined(__i386__)
|
2013-07-31 07:51:46 +00:00
|
|
|
#define V8_HOST_ARCH_IA32 1
|
|
|
|
#define V8_HOST_ARCH_32_BIT 1
|
|
|
|
#define V8_HOST_CAN_READ_UNALIGNED 1
|
2014-02-12 09:19:30 +00:00
|
|
|
#elif defined(__AARCH64EL__)
|
2014-03-21 09:28:26 +00:00
|
|
|
#define V8_HOST_ARCH_ARM64 1
|
2014-02-12 09:19:30 +00:00
|
|
|
#define V8_HOST_ARCH_64_BIT 1
|
|
|
|
#define V8_HOST_CAN_READ_UNALIGNED 1
|
2009-05-05 12:06:20 +00:00
|
|
|
#elif defined(__ARMEL__)
|
2013-07-31 07:51:46 +00:00
|
|
|
#define V8_HOST_ARCH_ARM 1
|
|
|
|
#define V8_HOST_ARCH_32_BIT 1
|
2014-04-15 16:39:21 +00:00
|
|
|
#elif defined(__MIPSEB__) || defined(__MIPSEL__)
|
2013-07-31 07:51:46 +00:00
|
|
|
#define V8_HOST_ARCH_MIPS 1
|
|
|
|
#define V8_HOST_ARCH_32_BIT 1
|
2009-05-05 12:06:20 +00:00
|
|
|
#else
|
2014-02-12 09:19:30 +00:00
|
|
|
#error "Host architecture was not detected as supported by v8"
|
2009-08-31 12:40:37 +00:00
|
|
|
#endif
|
|
|
|
|
2013-07-10 15:32:39 +00:00
|
|
|
#if defined(__ARM_ARCH_7A__) || \
|
|
|
|
defined(__ARM_ARCH_7R__) || \
|
|
|
|
defined(__ARM_ARCH_7__)
|
|
|
|
# define CAN_USE_ARMV7_INSTRUCTIONS 1
|
|
|
|
# ifndef CAN_USE_VFP3_INSTRUCTIONS
|
2013-07-31 07:51:46 +00:00
|
|
|
# define CAN_USE_VFP3_INSTRUCTIONS
|
2013-07-10 15:32:39 +00:00
|
|
|
# endif
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
2010-05-17 15:41:35 +00:00
|
|
|
// Target architecture detection. This may be set externally. If not, detect
|
|
|
|
// in the same way as the host architecture, that is, target the native
|
|
|
|
// environment as presented by the compiler.
|
2013-06-28 15:34:48 +00:00
|
|
|
#if !V8_TARGET_ARCH_X64 && !V8_TARGET_ARCH_IA32 && \
|
2014-03-21 09:28:26 +00:00
|
|
|
!V8_TARGET_ARCH_ARM && !V8_TARGET_ARCH_ARM64 && !V8_TARGET_ARCH_MIPS
|
2013-07-31 07:51:46 +00:00
|
|
|
#if defined(_M_X64) || defined(__x86_64__)
|
|
|
|
#define V8_TARGET_ARCH_X64 1
|
|
|
|
#elif defined(_M_IX86) || defined(__i386__)
|
|
|
|
#define V8_TARGET_ARCH_IA32 1
|
2014-02-12 09:19:30 +00:00
|
|
|
#elif defined(__AARCH64EL__)
|
2014-03-21 09:28:26 +00:00
|
|
|
#define V8_TARGET_ARCH_ARM64 1
|
2013-07-31 07:51:46 +00:00
|
|
|
#elif defined(__ARMEL__)
|
|
|
|
#define V8_TARGET_ARCH_ARM 1
|
2014-04-15 16:39:21 +00:00
|
|
|
#elif defined(__MIPSEB__) || defined(__MIPSEL__)
|
2013-07-31 07:51:46 +00:00
|
|
|
#define V8_TARGET_ARCH_MIPS 1
|
|
|
|
#else
|
|
|
|
#error Target architecture was not detected as supported by v8
|
|
|
|
#endif
|
2010-05-17 15:41:35 +00:00
|
|
|
#endif
|
|
|
|
|
2010-04-26 10:59:14 +00:00
|
|
|
// Check for supported combinations of host and target architectures.
|
2013-06-28 15:34:48 +00:00
|
|
|
#if V8_TARGET_ARCH_IA32 && !V8_HOST_ARCH_IA32
|
2013-07-31 07:51:46 +00:00
|
|
|
#error Target architecture ia32 is only supported on ia32 host
|
|
|
|
#endif
|
|
|
|
#if V8_TARGET_ARCH_X64 && !V8_HOST_ARCH_X64
|
|
|
|
#error Target architecture x64 is only supported on x64 host
|
|
|
|
#endif
|
|
|
|
#if (V8_TARGET_ARCH_ARM && !(V8_HOST_ARCH_IA32 || V8_HOST_ARCH_ARM))
|
|
|
|
#error Target architecture arm is only supported on arm and ia32 host
|
|
|
|
#endif
|
2014-03-21 09:28:26 +00:00
|
|
|
#if (V8_TARGET_ARCH_ARM64 && !(V8_HOST_ARCH_X64 || V8_HOST_ARCH_ARM64))
|
|
|
|
#error Target architecture arm64 is only supported on arm64 and x64 host
|
2014-02-12 09:19:30 +00:00
|
|
|
#endif
|
2013-07-31 07:51:46 +00:00
|
|
|
#if (V8_TARGET_ARCH_MIPS && !(V8_HOST_ARCH_IA32 || V8_HOST_ARCH_MIPS))
|
|
|
|
#error Target architecture mips is only supported on mips and ia32 host
|
2010-04-26 10:59:14 +00:00
|
|
|
#endif
|
|
|
|
|
2010-10-25 16:40:41 +00:00
|
|
|
// Determine whether we are running in a simulated environment.
|
2010-10-26 08:12:17 +00:00
|
|
|
// Setting USE_SIMULATOR explicitly from the build script will force
|
|
|
|
// the use of a simulated environment.
|
|
|
|
#if !defined(USE_SIMULATOR)
|
2014-03-21 09:28:26 +00:00
|
|
|
#if (V8_TARGET_ARCH_ARM64 && !V8_HOST_ARCH_ARM64)
|
2014-02-12 09:19:30 +00:00
|
|
|
#define USE_SIMULATOR 1
|
|
|
|
#endif
|
2013-07-31 07:51:46 +00:00
|
|
|
#if (V8_TARGET_ARCH_ARM && !V8_HOST_ARCH_ARM)
|
|
|
|
#define USE_SIMULATOR 1
|
|
|
|
#endif
|
|
|
|
#if (V8_TARGET_ARCH_MIPS && !V8_HOST_ARCH_MIPS)
|
|
|
|
#define USE_SIMULATOR 1
|
2010-10-26 08:12:17 +00:00
|
|
|
#endif
|
2013-06-21 13:02:38 +00:00
|
|
|
#endif
|
|
|
|
|
2014-04-15 16:39:21 +00:00
|
|
|
// Determine architecture endianness.
|
2013-07-31 07:51:46 +00:00
|
|
|
#if V8_TARGET_ARCH_IA32
|
|
|
|
#define V8_TARGET_LITTLE_ENDIAN 1
|
|
|
|
#elif V8_TARGET_ARCH_X64
|
|
|
|
#define V8_TARGET_LITTLE_ENDIAN 1
|
|
|
|
#elif V8_TARGET_ARCH_ARM
|
|
|
|
#define V8_TARGET_LITTLE_ENDIAN 1
|
2014-03-21 09:28:26 +00:00
|
|
|
#elif V8_TARGET_ARCH_ARM64
|
2014-02-12 09:19:30 +00:00
|
|
|
#define V8_TARGET_LITTLE_ENDIAN 1
|
2013-07-31 07:51:46 +00:00
|
|
|
#elif V8_TARGET_ARCH_MIPS
|
2014-04-15 16:39:21 +00:00
|
|
|
#if defined(__MIPSEB__)
|
|
|
|
#define V8_TARGET_BIG_ENDIAN 1
|
|
|
|
#else
|
2013-07-31 07:51:46 +00:00
|
|
|
#define V8_TARGET_LITTLE_ENDIAN 1
|
2014-04-15 16:39:21 +00:00
|
|
|
#endif
|
2013-07-30 10:36:58 +00:00
|
|
|
#else
|
2014-04-15 16:39:21 +00:00
|
|
|
#error Unknown target architecture endianness
|
2009-05-13 16:37:39 +00:00
|
|
|
#endif
|
|
|
|
|
2014-03-11 20:52:00 +00:00
|
|
|
// Determine whether the architecture uses an out-of-line constant pool.
|
|
|
|
#define V8_OOL_CONSTANT_POOL 0
|
|
|
|
|
2013-07-30 10:36:58 +00:00
|
|
|
// Support for alternative bool type. This is only enabled if the code is
|
|
|
|
// compiled with USE_MYBOOL defined. This catches some nasty type bugs.
|
|
|
|
// For instance, 'bool b = "false";' results in b == true! This is a hidden
|
|
|
|
// source of bugs.
|
|
|
|
// However, redefining the bool type does have some negative impact on some
|
|
|
|
// platforms. It gives rise to compiler warnings (i.e. with
|
|
|
|
// MSVC) in the API header files when mixing code that uses the standard
|
|
|
|
// bool with code that uses the redefined version.
|
|
|
|
// This does not actually belong in the platform code, but needs to be
|
|
|
|
// defined here because the platform code uses bool, and platform.h is
|
|
|
|
// include very early in the main include file.
|
|
|
|
|
|
|
|
#ifdef USE_MYBOOL
|
|
|
|
typedef unsigned int __my_bool__;
|
|
|
|
#define bool __my_bool__ // use 'indirection' to avoid name clashes
|
2013-07-29 12:12:39 +00:00
|
|
|
#endif
|
|
|
|
|
2013-07-30 10:36:58 +00:00
|
|
|
typedef uint8_t byte;
|
|
|
|
typedef byte* Address;
|
|
|
|
|
2013-07-31 07:51:46 +00:00
|
|
|
// Define our own macros for writing 64-bit constants. This is less fragile
|
|
|
|
// than defining __STDC_CONSTANT_MACROS before including <stdint.h>, and it
|
|
|
|
// works on compilers that don't have it (like MSVC).
|
2013-08-27 14:16:34 +00:00
|
|
|
#if V8_CC_MSVC
|
|
|
|
# define V8_UINT64_C(x) (x ## UI64)
|
|
|
|
# define V8_INT64_C(x) (x ## I64)
|
|
|
|
# if V8_HOST_ARCH_64_BIT
|
|
|
|
# define V8_INTPTR_C(x) (x ## I64)
|
|
|
|
# define V8_PTR_PREFIX "ll"
|
|
|
|
# else
|
|
|
|
# define V8_INTPTR_C(x) (x)
|
|
|
|
# define V8_PTR_PREFIX ""
|
|
|
|
# endif // V8_HOST_ARCH_64_BIT
|
|
|
|
#elif V8_CC_MINGW64
|
|
|
|
# define V8_UINT64_C(x) (x ## ULL)
|
|
|
|
# define V8_INT64_C(x) (x ## LL)
|
|
|
|
# define V8_INTPTR_C(x) (x ## LL)
|
|
|
|
# define V8_PTR_PREFIX "I64"
|
|
|
|
#elif V8_HOST_ARCH_64_BIT
|
2013-12-03 02:49:42 +00:00
|
|
|
# if V8_OS_MACOSX
|
|
|
|
# define V8_UINT64_C(x) (x ## ULL)
|
|
|
|
# define V8_INT64_C(x) (x ## LL)
|
|
|
|
# else
|
|
|
|
# define V8_UINT64_C(x) (x ## UL)
|
|
|
|
# define V8_INT64_C(x) (x ## L)
|
|
|
|
# endif
|
2013-08-27 14:16:34 +00:00
|
|
|
# define V8_INTPTR_C(x) (x ## L)
|
|
|
|
# define V8_PTR_PREFIX "l"
|
2013-07-31 07:51:46 +00:00
|
|
|
#else
|
2013-08-27 14:16:34 +00:00
|
|
|
# define V8_UINT64_C(x) (x ## ULL)
|
|
|
|
# define V8_INT64_C(x) (x ## LL)
|
|
|
|
# define V8_INTPTR_C(x) (x)
|
|
|
|
# define V8_PTR_PREFIX ""
|
2013-07-31 07:51:46 +00:00
|
|
|
#endif
|
|
|
|
|
|
|
|
// The following macro works on both 32 and 64-bit platforms.
|
|
|
|
// Usage: instead of writing 0x1234567890123456
|
|
|
|
// write V8_2PART_UINT64_C(0x12345678,90123456);
|
|
|
|
#define V8_2PART_UINT64_C(a, b) (((static_cast<uint64_t>(a) << 32) + 0x##b##u))
|
|
|
|
|
|
|
|
#define V8PRIxPTR V8_PTR_PREFIX "x"
|
|
|
|
#define V8PRIdPTR V8_PTR_PREFIX "d"
|
|
|
|
#define V8PRIuPTR V8_PTR_PREFIX "u"
|
|
|
|
|
|
|
|
// Fix for Mac OS X defining uintptr_t as "unsigned long":
|
2013-12-03 02:49:42 +00:00
|
|
|
#if V8_OS_MACOSX
|
2013-07-31 07:51:46 +00:00
|
|
|
#undef V8PRIxPTR
|
|
|
|
#define V8PRIxPTR "lx"
|
|
|
|
#endif
|
|
|
|
|
2013-12-03 02:49:42 +00:00
|
|
|
#if V8_OS_MACOSX || defined(__FreeBSD__) || defined(__OpenBSD__)
|
2013-07-31 07:51:46 +00:00
|
|
|
#define USING_BSD_ABI
|
|
|
|
#endif
|
|
|
|
|
2008-07-03 15:10:15 +00:00
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
// Constants
|
|
|
|
|
|
|
|
const int KB = 1024;
|
|
|
|
const int MB = KB * KB;
|
|
|
|
const int GB = KB * KB * KB;
|
|
|
|
const int kMaxInt = 0x7FFFFFFF;
|
|
|
|
const int kMinInt = -kMaxInt - 1;
|
2013-11-08 17:35:58 +00:00
|
|
|
const int kMaxInt8 = (1 << 7) - 1;
|
|
|
|
const int kMinInt8 = -(1 << 7);
|
|
|
|
const int kMaxUInt8 = (1 << 8) - 1;
|
|
|
|
const int kMinUInt8 = 0;
|
|
|
|
const int kMaxInt16 = (1 << 15) - 1;
|
|
|
|
const int kMinInt16 = -(1 << 15);
|
|
|
|
const int kMaxUInt16 = (1 << 16) - 1;
|
|
|
|
const int kMinUInt16 = 0;
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2009-04-27 11:16:59 +00:00
|
|
|
const uint32_t kMaxUInt32 = 0xFFFFFFFFu;
|
|
|
|
|
2013-07-23 13:46:10 +00:00
|
|
|
const int kCharSize = sizeof(char); // NOLINT
|
|
|
|
const int kShortSize = sizeof(short); // NOLINT
|
|
|
|
const int kIntSize = sizeof(int); // NOLINT
|
2013-10-14 13:35:06 +00:00
|
|
|
const int kInt32Size = sizeof(int32_t); // NOLINT
|
|
|
|
const int kInt64Size = sizeof(int64_t); // NOLINT
|
2013-07-23 13:46:10 +00:00
|
|
|
const int kDoubleSize = sizeof(double); // NOLINT
|
|
|
|
const int kIntptrSize = sizeof(intptr_t); // NOLINT
|
|
|
|
const int kPointerSize = sizeof(void*); // NOLINT
|
|
|
|
const int kRegisterSize = kPointerSize;
|
|
|
|
const int kPCOnStackSize = kRegisterSize;
|
|
|
|
const int kFPOnStackSize = kRegisterSize;
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2011-07-13 13:50:27 +00:00
|
|
|
const int kDoubleSizeLog2 = 3;
|
|
|
|
|
2009-05-05 12:06:20 +00:00
|
|
|
#if V8_HOST_ARCH_64_BIT
|
2009-05-04 13:29:29 +00:00
|
|
|
const int kPointerSizeLog2 = 3;
|
2009-06-17 11:50:33 +00:00
|
|
|
const intptr_t kIntptrSignBit = V8_INT64_C(0x8000000000000000);
|
2010-10-26 18:14:45 +00:00
|
|
|
const uintptr_t kUintptrAllBitsSet = V8_UINT64_C(0xFFFFFFFFFFFFFFFF);
|
2013-09-27 10:53:07 +00:00
|
|
|
const bool kIs64BitArch = true;
|
2009-05-04 13:29:29 +00:00
|
|
|
#else
|
2008-07-03 15:10:15 +00:00
|
|
|
const int kPointerSizeLog2 = 2;
|
2009-06-17 11:50:33 +00:00
|
|
|
const intptr_t kIntptrSignBit = 0x80000000;
|
2010-10-26 18:14:45 +00:00
|
|
|
const uintptr_t kUintptrAllBitsSet = 0xFFFFFFFFu;
|
2013-09-27 10:53:07 +00:00
|
|
|
const bool kIs64BitArch = false;
|
2009-05-04 13:29:29 +00:00
|
|
|
#endif
|
2008-07-03 15:10:15 +00:00
|
|
|
|
|
|
|
const int kBitsPerByte = 8;
|
|
|
|
const int kBitsPerByteLog2 = 3;
|
|
|
|
const int kBitsPerPointer = kPointerSize * kBitsPerByte;
|
|
|
|
const int kBitsPerInt = kIntSize * kBitsPerByte;
|
|
|
|
|
2010-03-23 13:38:04 +00:00
|
|
|
// 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;
|
2008-07-03 15:10:15 +00:00
|
|
|
|
2011-09-26 12:44:36 +00:00
|
|
|
// Quiet NaNs have bits 51 to 62 set, possibly the sign bit, and no
|
|
|
|
// other bits set.
|
|
|
|
const uint64_t kQuietNaNMask = static_cast<uint64_t>(0xfff) << 51;
|
|
|
|
|
2013-01-09 10:30:54 +00:00
|
|
|
// Latin1/UTF-16 constants
|
2010-12-22 20:14:19 +00:00
|
|
|
// Code-point values in Unicode 4.0 are 21 bits wide.
|
2012-03-12 12:35:28 +00:00
|
|
|
// Code units in UTF-16 are 16 bits wide.
|
2010-12-22 20:14:19 +00:00
|
|
|
typedef uint16_t uc16;
|
|
|
|
typedef int32_t uc32;
|
2013-01-09 10:30:54 +00:00
|
|
|
const int kOneByteSize = kCharSize;
|
2010-12-22 20:14:19 +00:00
|
|
|
const int kUC16Size = sizeof(uc16); // NOLINT
|
|
|
|
|
2010-12-07 11:31:57 +00:00
|
|
|
|
2013-08-23 08:22:07 +00:00
|
|
|
// Round up n to be a multiple of sz, where sz is a power of 2.
|
|
|
|
#define ROUND_UP(n, sz) (((n) + ((sz) - 1)) & ~((sz) - 1))
|
|
|
|
|
|
|
|
|
2008-07-03 15:10:15 +00:00
|
|
|
// The USE(x) template is used to silence C++ compiler warnings
|
|
|
|
// issued for (yet) unused variables (typically parameters).
|
|
|
|
template <typename T>
|
2011-11-29 10:56:11 +00:00
|
|
|
inline void USE(T) { }
|
2008-07-03 15:10:15 +00:00
|
|
|
|
|
|
|
|
|
|
|
// FUNCTION_ADDR(f) gets the address of a C function f.
|
|
|
|
#define FUNCTION_ADDR(f) \
|
|
|
|
(reinterpret_cast<v8::internal::Address>(reinterpret_cast<intptr_t>(f)))
|
|
|
|
|
|
|
|
|
|
|
|
// FUNCTION_CAST<F>(addr) casts an address into a function
|
|
|
|
// of type F. Used to invoke generated code from within C.
|
|
|
|
template <typename F>
|
|
|
|
F FUNCTION_CAST(Address addr) {
|
|
|
|
return reinterpret_cast<F>(reinterpret_cast<intptr_t>(addr));
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-11-15 13:23:30 +00:00
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
// Forward declarations for frequently used classes
|
|
|
|
// (sorted alphabetically)
|
2010-08-31 08:05:42 +00:00
|
|
|
|
2010-11-15 13:23:30 +00:00
|
|
|
class FreeStoreAllocationPolicy;
|
|
|
|
template <typename T, class P = FreeStoreAllocationPolicy> class List;
|
2009-11-13 12:32:57 +00:00
|
|
|
|
2011-10-27 13:08:51 +00:00
|
|
|
// -----------------------------------------------------------------------------
|
|
|
|
// Declarations for use in both the preparser and the rest of V8.
|
|
|
|
|
|
|
|
// The Strict Mode (ECMA-262 5th edition, 4.2.2).
|
2014-03-11 14:41:22 +00:00
|
|
|
|
|
|
|
enum StrictMode { SLOPPY, STRICT };
|
2011-10-27 13:08:51 +00:00
|
|
|
|
|
|
|
|
2008-07-03 15:10:15 +00:00
|
|
|
} } // namespace v8::internal
|
|
|
|
|
|
|
|
#endif // V8_GLOBALS_H_
|