Optimize endian routines when we know the endian at compile time.

git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@5830 fc73d0e0-1445-4013-8a0c-d673dee63da5

engine/client/image.c

@@ -8,13 +8,7 @@
 
 #ifndef HAVE_CLIENT
 //#define Con_Printf(f, ...)
-//hope you're on a littleendian machine
+float	FloatSwap (float l)
-#define LittleShort(s) s
-#define LittleLong(s) s
-#define LittleFloat(s) s
-
-#define BigFloat(s) SwapFloat(s)
-static float	SwapFloat (float l)
 {
 	union {qbyte b[4]; float f;} in, out;
 	in.f = l;

engine/common/bothdefs.h

@@ -693,6 +693,21 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 	#endif
 #endif
 
+#if defined(_WIN32)
+	#define FTE_LITTLE_ENDIAN
+#elif defined(__BYTE_ORDER__)
+	#ifdef __ORDER_BIG_ENDIAN__
+		#if (__BYTE_ORDER__==__ORDER_BIG_ENDIAN__) && (__FLOAT_WORD_ORDER__==__ORDER_BIG_ENDIAN__)
+			#define FTE_BIG_ENDIAN
+		#endif
+	#endif
+	#ifdef __ORDER_LITTLE_ENDIAN__
+		#if (__BYTE_ORDER__==__ORDER_LITTLE_ENDIAN__) && (__FLOAT_WORD_ORDER__==__ORDER_LITTLE_ENDIAN__)
+			#define FTE_LITTLE_ENDIAN
+		#endif
+	#endif
+#endif
+
 #ifdef _MSC_VER
 	#define VARGS __cdecl
 	#define MSVCDISABLEWARNINGS

engine/common/common.c

@@ -745,6 +745,7 @@ void deleetstring(char *result, const char *leet)
 ============================================================================
 */
 
+#if !defined(FTE_BIG_ENDIAN) && !defined(FTE_LITTLE_ENDIAN)
 qboolean	bigendian;
 
 short	(*BigShort) (short l);
@@ -754,39 +755,36 @@ int	(*LittleLong) (int l);
 float	(*BigFloat) (float l);
 float	(*LittleFloat) (float l);
 
+static short	ShortNoSwap (short l)	{	return l;	}
+static int		LongNoSwap (int l)		{	return l;	}
+static qint64_t	I64NoSwap (qint64_t l)	{	return l;	}
+static float	FloatNoSwap (float f)	{	return f;	}
+#endif
+
 short		ShortSwap	(short l)
 {
-	qbyte    b1,b2;
+	return	((l>> 8)&0x00ff)|
-
+			((l<< 8)&0xff00);
-	b1 = l&255;
-	b2 = (l>>8)&255;
-
-	return (b1<<8) + b2;
 }
-
-static short	ShortNoSwap (short l)
-{
-	return l;
-}
-
 int			LongSwap	(int l)
 {
-	qbyte    b1,b2,b3,b4;
+	return	((l>>24)&0x000000ff)|
-
+			((l>> 8)&0x0000ff00)|
-	b1 = l&255;
+			((l<< 8)&0x00ff0000)|
-	b2 = (l>>8)&255;
+			((l<<24)&0xff000000);
-	b3 = (l>>16)&255;
-	b4 = (l>>24)&255;
-
-	return ((int)b1<<24) + ((int)b2<<16) + ((int)b3<<8) + b4;
 }
-
+qint64_t    I64Swap		(qint64_t l)
-static int	LongNoSwap (int l)
 {
-	return l;
+	return	((l>>56)&        0x000000ff)|
+			((l>>40)&        0x0000ff00)|
+			((l>>24)&        0x00ff0000)|
+			((l>> 8)&        0xff000000)|
+			((l<< 8)&0x000000ff00000000)|
+			((l<<24)&0x0000ff0000000000)|
+			((l<<40)&0x00ff000000000000)|
+			((l<<56)&0xff00000000000000);
 }
-
+float FloatSwap (float f)
-static float FloatSwap (float f)
 {
 	union
 	{
@@ -803,11 +801,6 @@ static float FloatSwap (float f)
 	return dat2.f;
 }
 
-static float FloatNoSwap (float f)
-{
-	return f;
-}
-
 void COM_SwapLittleShortBlock (short *s, int size)
 {
 	if (size <= 0)
@@ -6212,11 +6205,9 @@ COM_Init
 */
 void COM_Init (void)
 {
-	qbyte	swaptest[2] = {1,0};
+#if !defined(FTE_BIG_ENDIAN) && !defined(FTE_LITTLE_ENDIAN)
-
-	wantquit = false;
-
 // set the qbyte swapping variables in a portable manner
+	qbyte	swaptest[2] = {1,0};
 	if ( *(short *)swaptest == 1)
 	{
 		bigendian = false;
@@ -6237,6 +6228,9 @@ void COM_Init (void)
 		BigFloat = FloatNoSwap;
 		LittleFloat = FloatSwap;
 	}
+#endif
+
+	wantquit = false;
 
 	//random should be random from the start...
 	srand(time(0));

engine/common/common.h

@@ -232,27 +232,57 @@ void InsertLinkAfter (link_t *l, link_t *after);
 #define Q_MAXSHORT ((short)0x7fff)
 #define Q_MAXINT	((int)0x7fffffff)
 #define Q_MAXLONG ((int)0x7fffffff)
-#define Q_MAXFLOAT ((int)0x7fffffff)
+//#define Q_MAXFLOAT ((int)0x7fffffff)
 
 #define Q_MINCHAR ((char)0x80)
 #define Q_MINSHORT ((short)0x8000)
 #define Q_MININT 	((int)0x80000000)
 #define Q_MINLONG ((int)0x80000000)
-#define Q_MINFLOAT ((int)0x7fffffff)
+//#define Q_MINFLOAT ((int)0x7fffffff)
 
 //============================================================================
 
+#if defined(FTE_LITTLE_ENDIAN)
+	#define bigendian		false
+
+	#define LittleShort(x)	((short)(x))
+	#define LittleLong(x)	((int)(x))
+	#define LittleI64(x)	((qint64_t)(x))
+	#define LittleFloat(x)	((float)(x))
+
+	#define BigShort(x)		(ShortSwap(x))
+	#define BigLong(x)		(LongSwap(x))
+	#define BigI64(x)		(I64Swap(x))
+	#define BigFloat(x)		(FloatSwap(x))
+#elif defined(FTE_BIG_ENDIAN)
+	#define bigendian		true
+
+	#define BigShort(x)		((short)(x))
+	#define BigLong(x)		((int)(x))
+	#define BigI64(x)		((qint64_t)(x))
+	#define BigFloat(x)		((float)(x))
+
+	#define LittleShort(x)	(ShortSwap(x))
+	#define LittleLong(x)	(LongSwap(x))
+	#define LittleI64(x)	(I64Swap(x))
+	#define LittleFloat(x)	(FloatSwap(x))
+#else
 	extern	qboolean		bigendian;
 
 	extern	short	(*BigShort) (short l);
 	extern	short	(*LittleShort) (short l);
 	extern	int	(*BigLong) (int l);
 	extern	int	(*LittleLong) (int l);
+	extern	qint64_t	(*BigI64) (qint64_t l);
+	extern	qint64_t	(*LittleI64) (qint64_t l);
 	extern	float	(*BigFloat) (float l);
 	extern	float	(*LittleFloat) (float l);
+#endif
 
 short		ShortSwap	(short l);
 int			LongSwap	(int l);
+qint64_t    I64Swap		(qint64_t l);
+float		FloatSwap	(float f);
 
 void COM_CharBias (signed char *c, int size);
 void COM_SwapLittleShortBlock (short *s, int size);

engine/common/sha1.c

@@ -28,12 +28,12 @@ typedef struct
 } SHA1_CTX;
 #define SHA1_DIGEST_SIZE 20
 
-#define BigLong(l)  (((unsigned char*)&l)[0]<<24) | (((unsigned char*)&l)[1]<<16) | (((unsigned char*)&l)[2]<<8) | (((unsigned char*)&l)[3]<<0)
+#define ShaBigLong(l)  (((unsigned char*)&l)[0]<<24) | (((unsigned char*)&l)[1]<<16) | (((unsigned char*)&l)[2]<<8) | (((unsigned char*)&l)[3]<<0)
 
 
 #define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
 
-#define blk0(i) (block->l[i] = BigLong(block->l[i]))
+#define blk0(i) (block->l[i] = ShaBigLong(block->l[i]))
 
 #define blk(i) (block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \
 ^block->l[(i+2)&15]^block->l[i&15],1))

imgtool.c

@@ -3,8 +3,6 @@
 #undef stderr
 #define stderr stdout
 
-#define LittleLong(s) s
-
 #include <limits.h>
 #include <ctype.h>
 #ifdef _WIN32