mirror of
https://github.com/Ryujinx/SDL.git
synced 2024-12-23 04:55:34 +00:00
Add SDL_FLOATWORDORDER for older ARM toolchains
This commit is contained in:
parent
adac3bd1e2
commit
b398a847be
|
@ -87,6 +87,28 @@ _m_prefetch(void *__P)
|
||||||
#endif /* __linux__ */
|
#endif /* __linux__ */
|
||||||
#endif /* !SDL_BYTEORDER */
|
#endif /* !SDL_BYTEORDER */
|
||||||
|
|
||||||
|
#ifndef SDL_FLOATWORDORDER /* Not defined in SDL_config.h? */
|
||||||
|
/* predefs from newer gcc versions: */
|
||||||
|
#if defined(__ORDER_LITTLE_ENDIAN__) && defined(__ORDER_BIG_ENDIAN__) && defined(__FLOAT_WORD_ORDER__)
|
||||||
|
#if (__FLOAT_WORD_ORDER__ == __ORDER_LITTLE_ENDIAN__)
|
||||||
|
#define SDL_FLOATWORDORDER SDL_LIL_ENDIAN
|
||||||
|
#elif (__FLOAT_WORD_ORDER__ == __ORDER_BIG_ENDIAN__)
|
||||||
|
#define SDL_FLOATWORDORDER SDL_BIG_ENDIAN
|
||||||
|
#else
|
||||||
|
#error Unsupported endianness
|
||||||
|
#endif /**/
|
||||||
|
#elif defined(__MAVERICK__)
|
||||||
|
/* For Maverick, float words are always little-endian. */
|
||||||
|
#define SDL_FLOATWORDORDER SDL_LIL_ENDIAN
|
||||||
|
#elif (defined(__arm__) || defined(__thumb__)) && !defined(__VFP_FP__) && !defined(__ARM_EABI__)
|
||||||
|
/* For FPA, float words are always big-endian. */
|
||||||
|
#define SDL_FLOATWORDORDER SDL_BIG_ENDIAN
|
||||||
|
#else
|
||||||
|
/* By default, assume that floats words follow the memory system mode. */
|
||||||
|
#define SDL_FLOATWORDORDER SDL_BYTEORDER
|
||||||
|
#endif /* __FLOAT_WORD_ORDER__ */
|
||||||
|
#endif /* !SDL_FLOATWORDORDER */
|
||||||
|
|
||||||
|
|
||||||
#include "begin_code.h"
|
#include "begin_code.h"
|
||||||
/* Set up for C function definitions, even when using C++ */
|
/* Set up for C function definitions, even when using C++ */
|
||||||
|
|
|
@ -66,9 +66,10 @@ typedef unsigned int u_int32_t;
|
||||||
* Math on arm is special:
|
* Math on arm is special:
|
||||||
* For FPA, float words are always big-endian.
|
* For FPA, float words are always big-endian.
|
||||||
* For VFP, floats words follow the memory system mode.
|
* For VFP, floats words follow the memory system mode.
|
||||||
|
* For Maverick, float words are always little-endian.
|
||||||
*/
|
*/
|
||||||
|
|
||||||
#if (SDL_BYTEORDER == SDL_BIG_ENDIAN)
|
#if (SDL_FLOATWORDORDER == SDL_BIG_ENDIAN)
|
||||||
|
|
||||||
typedef union
|
typedef union
|
||||||
{
|
{
|
||||||
|
|
|
@ -54,12 +54,18 @@ int platform_testTypes(void *arg)
|
||||||
int platform_testEndianessAndSwap(void *arg)
|
int platform_testEndianessAndSwap(void *arg)
|
||||||
{
|
{
|
||||||
int real_byteorder;
|
int real_byteorder;
|
||||||
|
int real_floatwordorder = 0;
|
||||||
Uint16 value = 0x1234;
|
Uint16 value = 0x1234;
|
||||||
Uint16 value16 = 0xCDAB;
|
Uint16 value16 = 0xCDAB;
|
||||||
Uint16 swapped16 = 0xABCD;
|
Uint16 swapped16 = 0xABCD;
|
||||||
Uint32 value32 = 0xEFBEADDE;
|
Uint32 value32 = 0xEFBEADDE;
|
||||||
Uint32 swapped32 = 0xDEADBEEF;
|
Uint32 swapped32 = 0xDEADBEEF;
|
||||||
|
|
||||||
|
union {
|
||||||
|
double d;
|
||||||
|
Uint32 ui32[2];
|
||||||
|
} value_double;
|
||||||
|
|
||||||
Uint64 value64, swapped64;
|
Uint64 value64, swapped64;
|
||||||
value64 = 0xEFBEADDE;
|
value64 = 0xEFBEADDE;
|
||||||
value64 <<= 32;
|
value64 <<= 32;
|
||||||
|
@ -67,6 +73,7 @@ int platform_testEndianessAndSwap(void *arg)
|
||||||
swapped64 = 0x1234ABCD;
|
swapped64 = 0x1234ABCD;
|
||||||
swapped64 <<= 32;
|
swapped64 <<= 32;
|
||||||
swapped64 |= 0xDEADBEEF;
|
swapped64 |= 0xDEADBEEF;
|
||||||
|
value_double.d = 3.141593;
|
||||||
|
|
||||||
if ((*((char *) &value) >> 4) == 0x1) {
|
if ((*((char *) &value) >> 4) == 0x1) {
|
||||||
real_byteorder = SDL_BIG_ENDIAN;
|
real_byteorder = SDL_BIG_ENDIAN;
|
||||||
|
@ -80,6 +87,18 @@ int platform_testEndianessAndSwap(void *arg)
|
||||||
(SDL_BYTEORDER == SDL_LIL_ENDIAN) ? "little" : "big",
|
(SDL_BYTEORDER == SDL_LIL_ENDIAN) ? "little" : "big",
|
||||||
(real_byteorder == SDL_LIL_ENDIAN) ? "little" : "big" );
|
(real_byteorder == SDL_LIL_ENDIAN) ? "little" : "big" );
|
||||||
|
|
||||||
|
if (value_double.ui32[0] == 0x82c2bd7f && value_double.ui32[1] == 0x400921fb) {
|
||||||
|
real_floatwordorder = SDL_LIL_ENDIAN;
|
||||||
|
} else if (value_double.ui32[0] == 0x400921fb && value_double.ui32[1] == 0x82c2bd7f) {
|
||||||
|
real_floatwordorder = SDL_BIG_ENDIAN;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Test endianness. */
|
||||||
|
SDLTest_AssertCheck( real_floatwordorder == SDL_FLOATWORDORDER,
|
||||||
|
"Machine detected as having %s endian float word order, appears to be %s endian.",
|
||||||
|
(SDL_FLOATWORDORDER == SDL_LIL_ENDIAN) ? "little" : "big",
|
||||||
|
(real_floatwordorder == SDL_LIL_ENDIAN) ? "little" : (real_floatwordorder == SDL_BIG_ENDIAN) ? "big" : "unknown" );
|
||||||
|
|
||||||
/* Test 16 swap. */
|
/* Test 16 swap. */
|
||||||
SDLTest_AssertCheck( SDL_Swap16(value16) == swapped16,
|
SDLTest_AssertCheck( SDL_Swap16(value16) == swapped16,
|
||||||
"SDL_Swap16(): 16 bit swapped: 0x%X => 0x%X",
|
"SDL_Swap16(): 16 bit swapped: 0x%X => 0x%X",
|
||||||
|
|
|
@ -86,18 +86,25 @@ TestEndian(SDL_bool verbose)
|
||||||
int error = 0;
|
int error = 0;
|
||||||
Uint16 value = 0x1234;
|
Uint16 value = 0x1234;
|
||||||
int real_byteorder;
|
int real_byteorder;
|
||||||
|
int real_floatwordorder = 0;
|
||||||
Uint16 value16 = 0xCDAB;
|
Uint16 value16 = 0xCDAB;
|
||||||
Uint16 swapped16 = 0xABCD;
|
Uint16 swapped16 = 0xABCD;
|
||||||
Uint32 value32 = 0xEFBEADDE;
|
Uint32 value32 = 0xEFBEADDE;
|
||||||
Uint32 swapped32 = 0xDEADBEEF;
|
Uint32 swapped32 = 0xDEADBEEF;
|
||||||
Uint64 value64, swapped64;
|
Uint64 value64, swapped64;
|
||||||
|
|
||||||
|
union {
|
||||||
|
double d;
|
||||||
|
Uint32 ui32[2];
|
||||||
|
} value_double;
|
||||||
|
|
||||||
value64 = 0xEFBEADDE;
|
value64 = 0xEFBEADDE;
|
||||||
value64 <<= 32;
|
value64 <<= 32;
|
||||||
value64 |= 0xCDAB3412;
|
value64 |= 0xCDAB3412;
|
||||||
swapped64 = 0x1234ABCD;
|
swapped64 = 0x1234ABCD;
|
||||||
swapped64 <<= 32;
|
swapped64 <<= 32;
|
||||||
swapped64 |= 0xDEADBEEF;
|
swapped64 |= 0xDEADBEEF;
|
||||||
|
value_double.d = 3.141593;
|
||||||
|
|
||||||
if (verbose) {
|
if (verbose) {
|
||||||
SDL_Log("Detected a %s endian machine.\n",
|
SDL_Log("Detected a %s endian machine.\n",
|
||||||
|
@ -115,6 +122,22 @@ TestEndian(SDL_bool verbose)
|
||||||
}
|
}
|
||||||
++error;
|
++error;
|
||||||
}
|
}
|
||||||
|
if (verbose) {
|
||||||
|
SDL_Log("Detected a %s endian float word order machine.\n",
|
||||||
|
(SDL_FLOATWORDORDER == SDL_LIL_ENDIAN) ? "little" : "big");
|
||||||
|
}
|
||||||
|
if (value_double.ui32[0] == 0x82c2bd7f && value_double.ui32[1] == 0x400921fb) {
|
||||||
|
real_floatwordorder = SDL_LIL_ENDIAN;
|
||||||
|
} else if (value_double.ui32[0] == 0x400921fb && value_double.ui32[1] == 0x82c2bd7f) {
|
||||||
|
real_floatwordorder = SDL_BIG_ENDIAN;
|
||||||
|
}
|
||||||
|
if (real_floatwordorder != SDL_FLOATWORDORDER) {
|
||||||
|
if (verbose) {
|
||||||
|
SDL_Log("Actually a %s endian float word order machine!\n",
|
||||||
|
(real_floatwordorder == SDL_LIL_ENDIAN) ? "little" : (real_floatwordorder == SDL_BIG_ENDIAN) ? "big" : "unknown" );
|
||||||
|
}
|
||||||
|
++error;
|
||||||
|
}
|
||||||
if (verbose) {
|
if (verbose) {
|
||||||
SDL_Log("Value 16 = 0x%X, swapped = 0x%X\n", value16,
|
SDL_Log("Value 16 = 0x%X, swapped = 0x%X\n", value16,
|
||||||
SDL_Swap16(value16));
|
SDL_Swap16(value16));
|
||||||
|
|
Loading…
Reference in a new issue