#include <stdio.h>

#include "SDL.h"
#include "SDL_endian.h"
#include "SDL_cpuinfo.h"

/*
 * Watcom C flags these as Warning 201: "Unreachable code" if you just
 *  compare them directly, so we push it through a function to keep the
 *  compiler quiet.  --ryan.
 */
static int badsize(size_t sizeoftype, size_t hardcodetype)
{
    return sizeoftype != hardcodetype;
}

int TestTypes(SDL_bool verbose)
{
	int error = 0;

	if ( badsize(sizeof(Uint8), 1) ) {
		if ( verbose )
			printf("sizeof(Uint8) != 1, instead = %ul\n",
								sizeof(Uint8));
		++error;
	}
	if ( badsize(sizeof(Uint16), 2) ) {
		if ( verbose )
			printf("sizeof(Uint16) != 2, instead = %ul\n",
								sizeof(Uint16));
		++error;
	}
	if ( badsize(sizeof(Uint32), 4) ) {
		if ( verbose )
			printf("sizeof(Uint32) != 4, instead = %ul\n",
								sizeof(Uint32));
		++error;
	}
#ifdef SDL_HAS_64BIT_TYPE
	if ( badsize(sizeof(Uint64), 8) ) {
		if ( verbose )
			printf("sizeof(Uint64) != 8, instead = %ul\n",
								sizeof(Uint64));
		++error;
	}
#else
	if ( verbose ) {
		printf("WARNING: No 64-bit datatype on this platform\n");
	}
#endif
	if ( verbose && !error )
		printf("All data types are the expected size.\n");

	return( error ? 1 : 0 );
}

int TestEndian(SDL_bool verbose)
{
	int error = 0;
	Uint16 value = 0x1234;
	int real_byteorder;
	Uint16 value16 = 0xCDAB;
	Uint16 swapped16 = 0xABCD;
	Uint32 value32 = 0xEFBEADDE;
	Uint32 swapped32 = 0xDEADBEEF;
#ifdef SDL_HAS_64BIT_TYPE
	Uint64 value64, swapped64;
	value64 = 0xEFBEADDE;
	value64 <<= 32;
	value64 |= 0xCDAB3412;
	swapped64 = 0x1234ABCD;
	swapped64 <<= 32;
	swapped64 |= 0xDEADBEEF;
#endif

	if ( verbose ) {
		printf("Detected a %s endian machine.\n",
			(SDL_BYTEORDER == SDL_LIL_ENDIAN) ? "little" : "big");
	}
	if ( (*((char *)&value) >> 4) == 0x1 ) {
		real_byteorder = SDL_BIG_ENDIAN;
	} else {
		real_byteorder = SDL_LIL_ENDIAN;
	}
	if ( real_byteorder != SDL_BYTEORDER ) {
		if ( verbose ) {
			printf("Actually a %s endian machine!\n",
				(real_byteorder == SDL_LIL_ENDIAN) ? "little" : "big");
		}
		++error;
	}
	if ( verbose ) {
		printf("Value 16 = 0x%X, swapped = 0x%X\n", value16, SDL_Swap16(value16));
	}
	if ( SDL_Swap16(value16) != swapped16 ) {
		if ( verbose ) {
			printf("16 bit value swapped incorrectly!\n");
		}
		++error;
	}
	if ( verbose ) {
		printf("Value 32 = 0x%X, swapped = 0x%X\n", value32, SDL_Swap32(value32));
	}
	if ( SDL_Swap32(value32) != swapped32 ) {
		if ( verbose ) {
			printf("32 bit value swapped incorrectly!\n");
		}
		++error;
	}
#ifdef SDL_HAS_64BIT_TYPE
	if ( verbose ) {
#ifdef _MSC_VER
		printf("Value 64 = 0x%I64X, swapped = 0x%I64X\n", value64, SDL_Swap64(value64));
#else
		printf("Value 64 = 0x%llX, swapped = 0x%llX\n", value64, SDL_Swap64(value64));
#endif
	}
	if ( SDL_Swap64(value64) != swapped64 ) {
		if ( verbose ) {
			printf("64 bit value swapped incorrectly!\n");
		}
		++error;
	}
#endif
	return( error ? 1 : 0 );
}


int TestCPUInfo(SDL_bool verbose)
{
	if ( verbose ) {
		printf("RDTSC %s\n", SDL_HasRDTSC() ? "detected" : "not detected");
		printf("MMX %s\n", SDL_HasMMX() ? "detected" : "not detected");
		printf("MMX Ext %s\n", SDL_HasMMXExt() ? "detected" : "not detected");
		printf("3DNow %s\n", SDL_Has3DNow() ? "detected" : "not detected");
		printf("3DNow Ext %s\n", SDL_Has3DNowExt() ? "detected" : "not detected");
		printf("SSE %s\n", SDL_HasSSE() ? "detected" : "not detected");
		printf("SSE2 %s\n", SDL_HasSSE2() ? "detected" : "not detected");
		printf("AltiVec %s\n", SDL_HasAltiVec() ? "detected" : "not detected");
	}
	return(0);
}

int main(int argc, char *argv[])
{
	SDL_bool verbose = SDL_TRUE;
	int status = 0;

	if ( argv[1] && (SDL_strcmp(argv[1], "-q") == 0) ) {
		verbose = SDL_FALSE;
	}
	if ( verbose ) {
		printf("This system is running %s\n",
#if __AIX__
			"AIX"
#elif __AMIGA__
			"AmigaOS"
#elif __BEOS__
			"BeOS"
#elif __BSDI__
			"BSDI"
#elif __DREAMCAST__
			"Dreamcast"
#elif __FREEBSD__
			"FreeBSD"
#elif __HPUX__
			"HP-UX"
#elif __IRIX__
			"Irix"
#elif __LINUX__
			"Linux"
#elif __MINT__
			"Atari MiNT"
#elif __MACOS__
			"MacOS Classic"
#elif __MACOSX__
			"Mac OS X"
#elif __NETBSD__
			"NetBSD"
#elif __OPENBSD__
			"OpenBSD"
#elif __OS2__
			"OS/2"
#elif __OSF__
			"OSF/1"
#elif __QNXNTO__
			"QNX Neutrino"
#elif __RISCOS__
			"RISC OS"
#elif __SOLARIS__
			"Solaris"
#elif __WIN32__
#ifdef _WIN32_WCE
			"Windows CE"
#else
			"Windows"
#endif
#else
			"an unknown operating system! (see SDL_platform.h)"
#endif
		);
	}

	status += TestTypes(verbose);
	status += TestEndian(verbose);
	status += TestCPUInfo(verbose);
	return status;
}