/*

 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#ifndef SHARE_VM_UTILITIES_GLOBALDEFINITIONS_VISCPP_HPP

#define SHARE_VM_UTILITIES_GLOBALDEFINITIONS_VISCPP_HPP

#include "prims/jni.h"

// This file holds compiler-dependent includes,

// globally used constants & types, class (forward)

// declarations and a few frequently used utility functions.

# include <ctype.h>

# include <string.h>

# include <stdarg.h>

# include <stdlib.h>

# include <stddef.h>// for offsetof

# include <io.h>    // for stream.cpp

# include <float.h> // for _isnan

# include <stdio.h> // for va_list

# include <time.h>

# include <fcntl.h>

# include <limits.h>

// Need this on windows to get the math constants (e.g., M_PI).

#define _USE_MATH_DEFINES

# include <math.h>

// 4810578: varargs unsafe on 32-bit integer/64-bit pointer architectures

// When __cplusplus is defined, NULL is defined as 0 (32-bit constant) in

// system header files.  On 32-bit architectures, there is no problem.

// On 64-bit architectures, defining NULL as a 32-bit constant can cause

// problems with varargs functions: C++ integral promotion rules say for

// varargs, we pass the argument 0 as an int.  So, if NULL was passed to a

// varargs function it will remain 32-bits.  Depending on the calling

// convention of the machine, if the argument is passed on the stack then

// only 32-bits of the "NULL" pointer may be initialized to zero.  The

// other 32-bits will be garbage.  If the varargs function is expecting a

// pointer when it extracts the argument, then we may have a problem.

//

// Solution: For 64-bit architectures, redefine NULL as 64-bit constant 0.

#ifdef _LP64

#undef NULL

// 64-bit Windows uses a P64 data model (not LP64, although we define _LP64)

// Since longs are 32-bit we cannot use 0L here.  Use the Visual C++ specific

// 64-bit integer-suffix (i64) instead.

#define NULL 0i64

#else

#ifndef NULL

#define NULL 0

#endif

#endif

// NULL vs NULL_WORD:

// On Linux NULL is defined as a special type '__null'. Assigning __null to

// integer variable will cause gcc warning. Use NULL_WORD in places where a

// pointer is stored as integer value.

#define NULL_WORD NULL

// Compiler-specific primitive types

typedef unsigned __int8  uint8_t;

typedef unsigned __int16 uint16_t;

typedef unsigned __int32 uint32_t;

typedef unsigned __int64 uint64_t;

#ifdef _WIN64

typedef unsigned __int64 uintptr_t;

#else

typedef unsigned int uintptr_t;

#endif

typedef signed   __int8  int8_t;

typedef signed   __int16 int16_t;

typedef signed   __int32 int32_t;

typedef signed   __int64 int64_t;

#ifdef _WIN64

typedef signed   __int64 intptr_t;

typedef signed   __int64 ssize_t;

#else

typedef signed   int intptr_t;

typedef signed   int ssize_t;

#endif

#ifndef UINTPTR_MAX

#ifdef _WIN64

#define UINTPTR_MAX _UI64_MAX

#else

#define UINTPTR_MAX _UI32_MAX

#endif

#endif

//----------------------------------------------------------------------------------------------------

// Additional Java basic types

typedef unsigned char    jubyte;

typedef unsigned short   jushort;

typedef unsigned int     juint;

typedef unsigned __int64 julong;

//----------------------------------------------------------------------------------------------------

// Special (possibly not-portable) casts

// Cast floats into same-size integers and vice-versa w/o changing bit-pattern

inline jint    jint_cast   (jfloat  x)           { return *(jint*   )&x; }

inline jlong   jlong_cast  (jdouble x)           { return *(jlong*  )&x; }

inline jfloat  jfloat_cast (jint    x)           { return *(jfloat* )&x; }

inline jdouble jdouble_cast(jlong   x)           { return *(jdouble*)&x; }

//----------------------------------------------------------------------------------------------------

// Non-standard stdlib-like stuff:

inline int strcasecmp(const char *s1, const char *s2) { return _stricmp(s1,s2); }

inline int strncasecmp(const char *s1, const char *s2, size_t n) {

  return _strnicmp(s1,s2,n);

}

//----------------------------------------------------------------------------------------------------

// Debugging

#if _WIN64

extern "C" void breakpoint();

#define BREAKPOINT ::breakpoint()

#else

#define BREAKPOINT __asm { int 3 }

#endif

//----------------------------------------------------------------------------------------------------

// Checking for nanness

inline int g_isnan(jfloat  f)                    { return _isnan(f); }

inline int g_isnan(jdouble f)                    { return _isnan(f); }

//----------------------------------------------------------------------------------------------------

// Checking for finiteness

inline int g_isfinite(jfloat  f)                 { return _finite(f); }

inline int g_isfinite(jdouble f)                 { return _finite(f); }

//----------------------------------------------------------------------------------------------------

// Constant for jlong (specifying an long long constant is C++ compiler specific)

// Build a 64bit integer constant on with Visual C++

#define CONST64(x)  (x ## i64)

#define UCONST64(x) ((uint64_t)CONST64(x))

const jlong min_jlong = CONST64(0x8000000000000000);

const jlong max_jlong = CONST64(0x7fffffffffffffff);

//----------------------------------------------------------------------------------------------------

// Miscellaneous

// Visual Studio 2005 deprecates POSIX names - use ISO C++ names instead

#if _MSC_VER >= 1400

#define open _open

#define close _close

#define read  _read

#define write _write

#define lseek _lseek

#define unlink _unlink

#define strdup _strdup

#endif

#pragma warning( disable : 4100 ) // unreferenced formal parameter

#pragma warning( disable : 4127 ) // conditional expression is constant

#pragma warning( disable : 4514 ) // unreferenced inline function has been removed

#pragma warning( disable : 4244 ) // possible loss of data

#pragma warning( disable : 4512 ) // assignment operator could not be generated

#pragma warning( disable : 4201 ) // nonstandard extension used : nameless struct/union (needed in windows.h)

#pragma warning( disable : 4511 ) // copy constructor could not be generated

#pragma warning( disable : 4291 ) // no matching operator delete found; memory will not be freed if initialization thows an exception

#if _MSC_VER >= 1400

#pragma warning( disable : 4996 ) // unsafe string functions. Same as define _CRT_SECURE_NO_WARNINGS/_CRT_SECURE_NO_DEPRICATE

#endif

inline int vsnprintf(char* buf, size_t count, const char* fmt, va_list argptr) {

  // If number of characters written == count, Windows doesn't write a

  // terminating NULL, so we do it ourselves.

  int ret = _vsnprintf(buf, count, fmt, argptr);

  if (count > 0) buf[count-1] = '\0';

  return ret;

}

// Portability macros

#define PRAGMA_INTERFACE

#define PRAGMA_IMPLEMENTATION

#define PRAGMA_IMPLEMENTATION_(arg)

#define VALUE_OBJ_CLASS_SPEC    : public _ValueObj

// Formatting.

#define FORMAT64_MODIFIER "I64"

// Visual Studio doesn't provide inttypes.h so provide appropriate definitions here.

// The 32 bits ones might need I32 but seem to work ok without it.

#define PRId32       "d"

#define PRIu32       "u"

#define PRIx32       "x"

#define PRId64       "I64d"

#define PRIu64       "I64u"

#define PRIx64       "I64x"

#ifdef _LP64

#define PRIdPTR       "I64d"

#define PRIuPTR       "I64u"

#define PRIxPTR       "I64x"

#else

#define PRIdPTR       "d"

#define PRIuPTR       "u"

#define PRIxPTR       "x"

#endif

#define offset_of(klass,field) offsetof(klass,field)

#endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_VISCPP_HPP