test/testplatform.c
author Sam Lantinga <slouken@libsdl.org>
Sat, 26 Sep 2009 23:17:08 +0000
branchSDL-1.2
changeset 4246 8b8314cc34a6
parent 4215 d83830711a5b
child 5637 d39fe8e7d26a
permissions -rw-r--r--
Fixed bug #810

Lauri Kenttä 2009-09-26 06:42:23 PDT

Support for disabling stdio redirect with environment variables.
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#include <stdio.h>
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#include "SDL.h"
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#include "SDL_endian.h"
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#include "SDL_cpuinfo.h"
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/*
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 * Watcom C flags these as Warning 201: "Unreachable code" if you just
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 *  compare them directly, so we push it through a function to keep the
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 *  compiler quiet.  --ryan.
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 */
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static int badsize(size_t sizeoftype, size_t hardcodetype)
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{
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    return sizeoftype != hardcodetype;
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}
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int TestTypes(SDL_bool verbose)
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{
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	int error = 0;
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	if ( badsize(sizeof(Uint8), 1) ) {
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		if ( verbose )
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			printf("sizeof(Uint8) != 1, instead = %ul\n",
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								sizeof(Uint8));
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		++error;
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	}
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	if ( badsize(sizeof(Uint16), 2) ) {
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		if ( verbose )
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			printf("sizeof(Uint16) != 2, instead = %ul\n",
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								sizeof(Uint16));
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		++error;
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	}
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	if ( badsize(sizeof(Uint32), 4) ) {
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		if ( verbose )
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			printf("sizeof(Uint32) != 4, instead = %ul\n",
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								sizeof(Uint32));
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		++error;
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	}
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#ifdef SDL_HAS_64BIT_TYPE
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	if ( badsize(sizeof(Uint64), 8) ) {
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		if ( verbose )
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			printf("sizeof(Uint64) != 8, instead = %ul\n",
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								sizeof(Uint64));
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		++error;
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	}
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#else
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	if ( verbose ) {
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		printf("WARNING: No 64-bit datatype on this platform\n");
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	}
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#endif
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	if ( verbose && !error )
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		printf("All data types are the expected size.\n");
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	return( error ? 1 : 0 );
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}
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int TestEndian(SDL_bool verbose)
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{
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	int error = 0;
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	Uint16 value = 0x1234;
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	int real_byteorder;
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	Uint16 value16 = 0xCDAB;
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	Uint16 swapped16 = 0xABCD;
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	Uint32 value32 = 0xEFBEADDE;
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	Uint32 swapped32 = 0xDEADBEEF;
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#ifdef SDL_HAS_64BIT_TYPE
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	Uint64 value64, swapped64;
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	value64 = 0xEFBEADDE;
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	value64 <<= 32;
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	value64 |= 0xCDAB3412;
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	swapped64 = 0x1234ABCD;
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	swapped64 <<= 32;
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	swapped64 |= 0xDEADBEEF;
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#endif
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	if ( verbose ) {
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		printf("Detected a %s endian machine.\n",
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			(SDL_BYTEORDER == SDL_LIL_ENDIAN) ? "little" : "big");
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	}
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	if ( (*((char *)&value) >> 4) == 0x1 ) {
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		real_byteorder = SDL_BIG_ENDIAN;
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	} else {
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		real_byteorder = SDL_LIL_ENDIAN;
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	}
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	if ( real_byteorder != SDL_BYTEORDER ) {
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		if ( verbose ) {
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			printf("Actually a %s endian machine!\n",
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				(real_byteorder == SDL_LIL_ENDIAN) ? "little" : "big");
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		}
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		++error;
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	}
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	if ( verbose ) {
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		printf("Value 16 = 0x%X, swapped = 0x%X\n", value16, SDL_Swap16(value16));
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	}
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	if ( SDL_Swap16(value16) != swapped16 ) {
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		if ( verbose ) {
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			printf("16 bit value swapped incorrectly!\n");
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		}
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		++error;
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	}
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	if ( verbose ) {
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		printf("Value 32 = 0x%X, swapped = 0x%X\n", value32, SDL_Swap32(value32));
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	}
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	if ( SDL_Swap32(value32) != swapped32 ) {
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		if ( verbose ) {
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			printf("32 bit value swapped incorrectly!\n");
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		}
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		++error;
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	}
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#ifdef SDL_HAS_64BIT_TYPE
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	if ( verbose ) {
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#ifdef _MSC_VER
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		printf("Value 64 = 0x%I64X, swapped = 0x%I64X\n", value64, SDL_Swap64(value64));
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#else
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		printf("Value 64 = 0x%llX, swapped = 0x%llX\n", value64, SDL_Swap64(value64));
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#endif
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	}
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	if ( SDL_Swap64(value64) != swapped64 ) {
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		if ( verbose ) {
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			printf("64 bit value swapped incorrectly!\n");
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		}
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		++error;
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	}
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#endif
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	return( error ? 1 : 0 );
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}
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int TestCPUInfo(SDL_bool verbose)
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{
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	if ( verbose ) {
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		printf("RDTSC %s\n", SDL_HasRDTSC() ? "detected" : "not detected");
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		printf("MMX %s\n", SDL_HasMMX() ? "detected" : "not detected");
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		printf("MMX Ext %s\n", SDL_HasMMXExt() ? "detected" : "not detected");
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		printf("3DNow %s\n", SDL_Has3DNow() ? "detected" : "not detected");
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		printf("3DNow Ext %s\n", SDL_Has3DNowExt() ? "detected" : "not detected");
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		printf("SSE %s\n", SDL_HasSSE() ? "detected" : "not detected");
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		printf("SSE2 %s\n", SDL_HasSSE2() ? "detected" : "not detected");
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		printf("AltiVec %s\n", SDL_HasAltiVec() ? "detected" : "not detected");
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	}
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	return(0);
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}
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int main(int argc, char *argv[])
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{
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	SDL_bool verbose = SDL_TRUE;
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	int status = 0;
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	if ( argv[1] && (SDL_strcmp(argv[1], "-q") == 0) ) {
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		verbose = SDL_FALSE;
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	}
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	if ( verbose ) {
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		printf("This system is running %s\n",
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#if __AIX__
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			"AIX"
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#elif __HAIKU__
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/* Haiku must appear here before BeOS, since it also defines __BEOS__ */
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			"Haiku"
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#elif __BEOS__
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			"BeOS"
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#elif __BSDI__
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			"BSDI"
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#elif __DREAMCAST__
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			"Dreamcast"
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#elif __FREEBSD__
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			"FreeBSD"
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#elif __HPUX__
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			"HP-UX"
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#elif __IRIX__
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			"Irix"
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#elif __LINUX__
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			"Linux"
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#elif __MINT__
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			"Atari MiNT"
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#elif __MACOS__
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			"MacOS Classic"
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#elif __MACOSX__
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			"Mac OS X"
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#elif __NETBSD__
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			"NetBSD"
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#elif __OPENBSD__
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			"OpenBSD"
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#elif __OS2__
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			"OS/2"
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#elif __OSF__
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			"OSF/1"
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#elif __QNXNTO__
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			"QNX Neutrino"
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#elif __RISCOS__
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			"RISC OS"
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#elif __SOLARIS__
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			"Solaris"
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#elif __WIN32__
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#ifdef _WIN32_WCE
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			"Windows CE"
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#else
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			"Windows"
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#endif
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#else
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			"an unknown operating system! (see SDL_platform.h)"
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#endif
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		);
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	}
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	status += TestTypes(verbose);
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	status += TestEndian(verbose);
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	status += TestCPUInfo(verbose);
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	return status;
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}