// Copyright (c) 2014 Steve Thomas <steve AT tobtu DOT com>

#ifndef COMMON_H
#define COMMON_H

#include "architecture.h"
#include <stdio.h>

#ifdef _WIN32
	#pragma warning(disable:4996)
#endif

#define __STDC_CONSTANT_MACROS
#define __STDC_LIMIT_MACROS
#ifdef _WIN32
	#include "inttypes.h"
	#include <time.h>
	#include <windows.h>
	typedef LARGE_INTEGER TIMER_TYPE;
	#define TIMER_FUNC(t)             QueryPerformanceCounter(&t)

	inline double TIMER_DIFF(LARGE_INTEGER s, LARGE_INTEGER e)
	{
		LARGE_INTEGER f;
		QueryPerformanceFrequency(&f);
		return ((double) (e.QuadPart - s.QuadPart)) / f.QuadPart;
	}
#else
	#include <inttypes.h>
	#include <sys/time.h>
	#include <unistd.h>
	#define TIMER_TYPE                timeval
	#define TIMER_FUNC(t)             gettimeofday(&t, NULL)
	#define TIMER_DIFF(s,e)           ((e.tv_sec - s.tv_sec) + (e.tv_usec - s.tv_usec) / (double)1000000.0)
#endif

#define SWAP_ENDIAN_32_(x) \
	( \
		 ((x) << 24) | \
		(((x) <<  8) & 0x00ff0000) | \
		(((x) >>  8) & 0x0000ff00) | \
		 ((x) >> 24) \
	)
#define SWAP_ENDIAN_32(x)  SWAP_ENDIAN_32_(((uint32_t) (x)))
#define SWAP_ENDIAN_64_(x) \
	( \
		 ((x) << 56) | \
		(((x) << 40) & UINT64_C(0x00ff000000000000)) | \
		(((x) << 24) & UINT64_C(0x0000ff0000000000)) | \
		(((x) <<  8) & UINT64_C(0x000000ff00000000)) | \
		(((x) >>  8) & UINT64_C(0x00000000ff000000)) | \
		(((x) >> 24) & UINT64_C(0x0000000000ff0000)) | \
		(((x) >> 40) & UINT64_C(0x000000000000ff00)) | \
		 ((x) >> 56) \
	)
#define SWAP_ENDIAN_64(x)  SWAP_ENDIAN_64_(((uint64_t) (x)))

#ifdef ARC_LITTLE_ENDIAN
	#define READ_LITTLE_ENDIAN_32(n)                (n)
	#define READ_BIG_ENDIAN_32(n)     SWAP_ENDIAN_32(n)
	#define WRITE_LITTLE_ENDIAN_32(n)               (n)
	#define WRITE_BIG_ENDIAN_32(n)    SWAP_ENDIAN_32(n)

	#define READ_LITTLE_ENDIAN_64(n)                (n)
	#define READ_BIG_ENDIAN_64(n)     SWAP_ENDIAN_64(n)
	#define WRITE_LITTLE_ENDIAN_64(n)               (n)
	#define WRITE_BIG_ENDIAN_64(n)    SWAP_ENDIAN_64(n)
#else
	#define READ_LITTLE_ENDIAN_32(n)  SWAP_ENDIAN_32(n)
	#define READ_BIG_ENDIAN_32(n)                   (n)
	#define WRITE_LITTLE_ENDIAN_32(n) SWAP_ENDIAN_32(n)
	#define WRITE_BIG_ENDIAN_32(n)                  (n)

	#define READ_LITTLE_ENDIAN_64(n)  SWAP_ENDIAN_64(n)
	#define READ_BIG_ENDIAN_64(n)                   (n)
	#define WRITE_LITTLE_ENDIAN_64(n) SWAP_ENDIAN_64(n)
	#define WRITE_BIG_ENDIAN_64(n)                  (n)
#endif

#endif