This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
platform.c
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/**
* Automated SDL platform test.
*
* Based off of testplatform.c.
*
* Written by Edgar Simo "bobbens"
*
* Released under Public Domain.
*/
#include "SDL.h"
#include "SDL_endian.h"
#include "SDL_cpuinfo.h"
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#include "../SDL_at.h"
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/*
* Prototypes.
*/
static int plat_testSize( size_t sizeoftype, size_t hardcodetype );
static void plat_testTypes (void);
/**
* @brief Test size.
*
* @note 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 plat_testSize( size_t sizeoftype, size_t hardcodetype )
{
return sizeoftype != hardcodetype;
}
/**
* @brief Tests type size.
*/
static void plat_testTypes (void)
{
int ret;
SDL_ATbegin( "Type size" );
ret = plat_testSize( sizeof(Uint8), 1 );
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if (SDL_ATvassert( ret == 0, "sizeof(Uint8) = %lu instead of 1", sizeof(Uint8) ))
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return;
ret = plat_testSize( sizeof(Uint16), 2 );
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if (SDL_ATvassert( ret == 0, "sizeof(Uint16) = %lu instead of 2", sizeof(Uint16) ))
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return;
ret = plat_testSize( sizeof(Uint32), 4 );
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if (SDL_ATvassert( ret == 0, "sizeof(Uint32) = %lu instead of 4", sizeof(Uint32) ))
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return;
#ifdef SDL_HAS_64BIT_TYPE
ret = plat_testSize( sizeof(Uint64), 8 );
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if (SDL_ATvassert( ret == 0, "sizeof(Uint64) = %lu instead of 8", sizeof(Uint64) ))
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return;
#endif /* SDL_HAS_64BIT_TYPE */
SDL_ATend();
}
/**
* @brief Tests platform endianness.
*/
static void plat_testEndian (void)
{
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
SDL_ATbegin( "Endianness" );
/* Test endianness. */
if ((*((char *) &value) >> 4) == 0x1) {
real_byteorder = SDL_BIG_ENDIAN;
} else {
real_byteorder = SDL_LIL_ENDIAN;
}
if (SDL_ATvassert( real_byteorder == SDL_BYTEORDER,
"Machine detected as %s endian but appears to be %s endian.",
(SDL_BYTEORDER == SDL_LIL_ENDIAN) ? "little" : "big",
(real_byteorder == SDL_LIL_ENDIAN) ? "little" : "big" ))
return;
/* Test 16 swap. */
if (SDL_ATvassert( SDL_Swap16(value16) == swapped16,
"16 bit swapped incorrectly: 0x%X => 0x%X",
value16, SDL_Swap16(value16) ))
return;
/* Test 32 swap. */
if (SDL_ATvassert( SDL_Swap32(value32) == swapped32,
"32 bit swapped incorrectly: 0x%X => 0x%X",
value32, SDL_Swap32(value32) ))
return;
#ifdef SDL_HAS_64BIT_TYPE
/* Test 64 swap. */
if (SDL_ATvassert( SDL_Swap64(value64) == swapped64,
#ifdef _MSC_VER
"64 bit swapped incorrectly: 0x%I64X => 0x%I64X",
#else
"64 bit swapped incorrectly: 0x%llX => 0x%llX",
#endif
value64, SDL_Swap64(value64) ))
return;
#endif
SDL_ATend();
}
/**
* @brief Platform test entrypoint.
*/
#ifdef TEST_STANDALONE
int main( int argc, const char *argv[] )
{
(void) argc;
(void) argv;
#else /* TEST_STANDALONE */
int test_platform (void)
{
#endif /* TEST_STANDALONE */
SDL_ATinit( "Platform" );
/* Debug information. */
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SDL_ATprintVerbose( 1, "%s System detected\n", SDL_GetPlatform() );
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SDL_ATprintVerbose( 1, "System is %s endian\n",
#ifdef SDL_LIL_ENDIAN
"little"
#else
"big"
#endif
);
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SDL_ATprintVerbose( 1, "CPU count: %d\n", SDL_GetCPUCount());
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SDL_ATprintVerbose( 1, "Available extensions:\n" );
SDL_ATprintVerbose( 1, " RDTSC %s\n", SDL_HasRDTSC()? "detected" : "not detected" );
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SDL_ATprintVerbose( 1, " AltiVec %s\n", SDL_HasAltiVec()? "detected" : "not detected" );
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SDL_ATprintVerbose( 1, " MMX %s\n", SDL_HasMMX()? "detected" : "not detected" );
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SDL_ATprintVerbose( 1, " 3DNow! %s\n", SDL_Has3DNow()? "detected" : "not detected" );
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SDL_ATprintVerbose( 1, " SSE %s\n", SDL_HasSSE()? "detected" : "not detected" );
SDL_ATprintVerbose( 1, " SSE2 %s\n", SDL_HasSSE2()? "detected" : "not detected" );
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SDL_ATprintVerbose( 1, " SSE3 %s\n", SDL_HasSSE3()? "detected" : "not detected" );
SDL_ATprintVerbose( 1, " SSE4.1 %s\n", SDL_HasSSE41()? "detected" : "not detected" );
SDL_ATprintVerbose( 1, " SSE4.2 %s\n", SDL_HasSSE42()? "detected" : "not detected" );
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plat_testTypes();
plat_testEndian();
return SDL_ATfinish();
}