/*
 This file is to support header files that are missing in MSVC and
 other non-standard compilers.
*/
#ifndef UNICORN_PLATFORM_H
#define UNICORN_PLATFORM_H

/*
These are the various MSVC versions as given by _MSC_VER:
MSVC++ 14.0 _MSC_VER == 1900 (Visual Studio 2015)
MSVC++ 12.0 _MSC_VER == 1800 (Visual Studio 2013)
MSVC++ 11.0 _MSC_VER == 1700 (Visual Studio 2012)
MSVC++ 10.0 _MSC_VER == 1600 (Visual Studio 2010)
MSVC++ 9.0  _MSC_VER == 1500 (Visual Studio 2008)
MSVC++ 8.0  _MSC_VER == 1400 (Visual Studio 2005)
MSVC++ 7.1  _MSC_VER == 1310 (Visual Studio 2003)
MSVC++ 7.0  _MSC_VER == 1300
MSVC++ 6.0  _MSC_VER == 1200
MSVC++ 5.0  _MSC_VER == 1100
*/
#define MSC_VER_VS2003	1310
#define MSC_VER_VS2005	1400
#define MSC_VER_VS2008	1500
#define MSC_VER_VS2010	1600
#define MSC_VER_VS2012	1700
#define MSC_VER_VS2013	1800
#define MSC_VER_VS2015	1900

// handle stdbool.h compatibility
#if !defined(__CYGWIN__) && !defined(__MINGW32__) && !defined(__MINGW64__) && (defined (WIN32) || defined (WIN64) || defined (_WIN32) || defined (_WIN64))
// MSVC

// stdbool.h
#if (_MSC_VER < MSC_VER_VS2013) || defined(_KERNEL_MODE)
// this system does not have stdbool.h
#ifndef __cplusplus
typedef unsigned char bool;
#define false 0
#define true 1
#endif  // __cplusplus

#else
// VisualStudio 2013+ -> C99 is supported
#include <stdbool.h>
#endif  // (_MSC_VER < MSC_VER_VS2013) || defined(_KERNEL_MODE)

#else
// not MSVC -> C99 is supported
#include <stdbool.h>
#endif  // !defined(__CYGWIN__) && !defined(__MINGW32__) && !defined(__MINGW64__) && (defined (WIN32) || defined (WIN64) || defined (_WIN32) || defined (_WIN64))

#if (defined(_MSC_VER) && (_MSC_VER < MSC_VER_VS2010)) || defined(_KERNEL_MODE)
// this system does not have stdint.h
typedef signed char  int8_t;
typedef signed short int16_t;
typedef signed int   int32_t;
typedef unsigned char  uint8_t;
typedef unsigned short uint16_t;
typedef unsigned int   uint32_t;
typedef signed long long   int64_t;
typedef unsigned long long uint64_t;

#ifndef _INTPTR_T_DEFINED
 #define _INTPTR_T_DEFINED
 #ifdef _WIN64
typedef long long          intptr_t;
 #else /* _WIN64 */
typedef _W64 int           intptr_t;
 #endif /* _WIN64 */
#endif /* _INTPTR_T_DEFINED */

#ifndef _UINTPTR_T_DEFINED
 #define _UINTPTR_T_DEFINED
 #ifdef _WIN64
typedef unsigned long long uintptr_t;
 #else /* _WIN64 */
typedef _W64 unsigned int  uintptr_t;
 #endif /* _WIN64 */
#endif /* _UINTPTR_T_DEFINED */

#define INT8_MIN         (-127i8 - 1)
#define INT16_MIN        (-32767i16 - 1)
#define INT32_MIN        (-2147483647i32 - 1)
#define INT64_MIN        (-9223372036854775807i64 - 1)
#define INT8_MAX         127i8
#define INT16_MAX        32767i16
#define INT32_MAX        2147483647i32
#define INT64_MAX        9223372036854775807i64
#define UINT8_MAX        0xffui8
#define UINT16_MAX       0xffffui16
#define UINT32_MAX       0xffffffffui32
#define UINT64_MAX       0xffffffffffffffffui64
#else // this system has stdint.h
#include <stdint.h>
#endif  // (defined(_MSC_VER) && (_MSC_VER < MSC_VER_VS2010)) || defined(_KERNEL_MODE)

// handle inttypes.h compatibility
#if (defined(_MSC_VER) && (_MSC_VER < MSC_VER_VS2013)) || defined(_KERNEL_MODE)
// this system does not have inttypes.h

#define __PRI_8_LENGTH_MODIFIER__ "hh"
#define __PRI_64_LENGTH_MODIFIER__ "ll"

#define PRId8         __PRI_8_LENGTH_MODIFIER__ "d"
#define PRIi8         __PRI_8_LENGTH_MODIFIER__ "i"
#define PRIo8         __PRI_8_LENGTH_MODIFIER__ "o"
#define PRIu8         __PRI_8_LENGTH_MODIFIER__ "u"
#define PRIx8         __PRI_8_LENGTH_MODIFIER__ "x"
#define PRIX8         __PRI_8_LENGTH_MODIFIER__ "X"

#define PRId16        "hd"
#define PRIi16        "hi"
#define PRIo16        "ho"
#define PRIu16        "hu"
#define PRIx16        "hx"
#define PRIX16        "hX"

#if defined(_MSC_VER) && (_MSC_VER <= MSC_VER_VS2012)
#define PRId32        "ld"
#define PRIi32        "li"
#define PRIo32        "lo"
#define PRIu32        "lu"
#define PRIx32        "lx"
#define PRIX32        "lX"
#else	// OSX
#define PRId32        "d"
#define PRIi32        "i"
#define PRIo32        "o"
#define PRIu32        "u"
#define PRIx32        "x"
#define PRIX32        "X"
#endif  // defined(_MSC_VER) && (_MSC_VER <= MSC_VER_VS2012)

#if defined(_MSC_VER) && (_MSC_VER <= MSC_VER_VS2012)
// redefine functions from inttypes.h used in cstool
#define strtoull _strtoui64
#endif

#define PRId64        __PRI_64_LENGTH_MODIFIER__ "d"
#define PRIi64        __PRI_64_LENGTH_MODIFIER__ "i"
#define PRIo64        __PRI_64_LENGTH_MODIFIER__ "o"
#define PRIu64        __PRI_64_LENGTH_MODIFIER__ "u"
#define PRIx64        __PRI_64_LENGTH_MODIFIER__ "x"
#define PRIX64        __PRI_64_LENGTH_MODIFIER__ "X"

#else
// this system has inttypes.h by default
#include <inttypes.h>
#endif // #if defined(_MSC_VER) && (_MSC_VER < MSC_VER_VS2013) || defined(_KERNEL_MODE)

// sys/time.h compatibility
#if defined(_MSC_VER)
#include <sys/timeb.h>
#include <winsock2.h>
#include <windows.h>

static int gettimeofday(struct timeval* t, void* timezone)
{
    struct _timeb timebuffer;
    _ftime( &timebuffer );
    t->tv_sec = (long)timebuffer.time;
    t->tv_usec = 1000*timebuffer.millitm;
    return 0;
}
#else
#include <sys/time.h>
#endif

// unistd.h compatibility
#if defined(_MSC_VER)

static int usleep(uint32_t usec)
{
    HANDLE timer;
    LARGE_INTEGER due;

    timer = CreateWaitableTimer(NULL, TRUE, NULL);
    if (!timer)
        return -1;

    due.QuadPart = (-((int64_t) usec)) * 10LL;
    if (!SetWaitableTimer(timer, &due, 0, NULL, NULL, 0)) {
        CloseHandle(timer);
        return -1;
    }
    WaitForSingleObject(timer, INFINITE);
    CloseHandle(timer);

    return 0;
}

#else
#include <unistd.h>
#endif

// misc support
#if defined(_MSC_VER)
#ifdef  _WIN64
typedef signed __int64    ssize_t;
#else
typedef _W64 signed int   ssize_t;
#endif

#define va_copy(d,s) ((d) = (s))
#define strcasecmp	_stricmp
#if (_MSC_VER < MSC_VER_VS2015)
#define snprintf	_snprintf
#endif
#if (_MSC_VER <= MSC_VER_VS2013)
#define strtoll		_strtoi64
#endif
#endif


#endif // UNICORN_PLATFORM_H
