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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
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Spoike
parent
134de2cfb2
commit
2cf2247b84
6 changed files with 89 additions and 58 deletions
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@ -8,13 +8,7 @@
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#ifndef HAVE_CLIENT
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//#define Con_Printf(f, ...)
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//hope you're on a littleendian machine
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#define LittleShort(s) s
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#define LittleLong(s) s
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#define LittleFloat(s) s
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#define BigFloat(s) SwapFloat(s)
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static float SwapFloat (float l)
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float FloatSwap (float l)
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{
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union {qbyte b[4]; float f;} in, out;
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in.f = l;
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@ -693,6 +693,21 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#endif
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#endif
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#if defined(_WIN32)
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#define FTE_LITTLE_ENDIAN
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#elif defined(__BYTE_ORDER__)
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#ifdef __ORDER_BIG_ENDIAN__
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#if (__BYTE_ORDER__==__ORDER_BIG_ENDIAN__) && (__FLOAT_WORD_ORDER__==__ORDER_BIG_ENDIAN__)
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#define FTE_BIG_ENDIAN
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#endif
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#endif
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#ifdef __ORDER_LITTLE_ENDIAN__
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#if (__BYTE_ORDER__==__ORDER_LITTLE_ENDIAN__) && (__FLOAT_WORD_ORDER__==__ORDER_LITTLE_ENDIAN__)
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#define FTE_LITTLE_ENDIAN
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#endif
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#endif
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#endif
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#ifdef _MSC_VER
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#define VARGS __cdecl
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#define MSVCDISABLEWARNINGS
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@ -745,6 +745,7 @@ void deleetstring(char *result, const char *leet)
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============================================================================
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*/
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#if !defined(FTE_BIG_ENDIAN) && !defined(FTE_LITTLE_ENDIAN)
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qboolean bigendian;
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short (*BigShort) (short l);
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@ -754,39 +755,36 @@ int (*LittleLong) (int l);
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float (*BigFloat) (float l);
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float (*LittleFloat) (float l);
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static short ShortNoSwap (short l) { return l; }
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static int LongNoSwap (int l) { return l; }
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static qint64_t I64NoSwap (qint64_t l) { return l; }
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static float FloatNoSwap (float f) { return f; }
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#endif
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short ShortSwap (short l)
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{
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qbyte b1,b2;
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b1 = l&255;
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b2 = (l>>8)&255;
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return (b1<<8) + b2;
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return ((l>> 8)&0x00ff)|
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((l<< 8)&0xff00);
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}
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static short ShortNoSwap (short l)
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{
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return l;
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}
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int LongSwap (int l)
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{
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qbyte b1,b2,b3,b4;
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b1 = l&255;
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b2 = (l>>8)&255;
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b3 = (l>>16)&255;
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b4 = (l>>24)&255;
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return ((int)b1<<24) + ((int)b2<<16) + ((int)b3<<8) + b4;
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return ((l>>24)&0x000000ff)|
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((l>> 8)&0x0000ff00)|
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((l<< 8)&0x00ff0000)|
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((l<<24)&0xff000000);
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}
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static int LongNoSwap (int l)
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qint64_t I64Swap (qint64_t l)
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{
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return l;
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return ((l>>56)& 0x000000ff)|
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((l>>40)& 0x0000ff00)|
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((l>>24)& 0x00ff0000)|
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((l>> 8)& 0xff000000)|
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((l<< 8)&0x000000ff00000000)|
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((l<<24)&0x0000ff0000000000)|
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((l<<40)&0x00ff000000000000)|
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((l<<56)&0xff00000000000000);
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}
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static float FloatSwap (float f)
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float FloatSwap (float f)
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{
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union
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{
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@ -803,11 +801,6 @@ static float FloatSwap (float f)
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return dat2.f;
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}
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static float FloatNoSwap (float f)
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{
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return f;
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}
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void COM_SwapLittleShortBlock (short *s, int size)
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{
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if (size <= 0)
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@ -6212,11 +6205,9 @@ COM_Init
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*/
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void COM_Init (void)
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{
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qbyte swaptest[2] = {1,0};
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wantquit = false;
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#if !defined(FTE_BIG_ENDIAN) && !defined(FTE_LITTLE_ENDIAN)
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// set the qbyte swapping variables in a portable manner
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qbyte swaptest[2] = {1,0};
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if ( *(short *)swaptest == 1)
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{
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bigendian = false;
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@ -6237,6 +6228,9 @@ void COM_Init (void)
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BigFloat = FloatNoSwap;
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LittleFloat = FloatSwap;
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}
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#endif
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wantquit = false;
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//random should be random from the start...
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srand(time(0));
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@ -232,27 +232,57 @@ void InsertLinkAfter (link_t *l, link_t *after);
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#define Q_MAXSHORT ((short)0x7fff)
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#define Q_MAXINT ((int)0x7fffffff)
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#define Q_MAXLONG ((int)0x7fffffff)
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#define Q_MAXFLOAT ((int)0x7fffffff)
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//#define Q_MAXFLOAT ((int)0x7fffffff)
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#define Q_MINCHAR ((char)0x80)
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#define Q_MINSHORT ((short)0x8000)
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#define Q_MININT ((int)0x80000000)
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#define Q_MINLONG ((int)0x80000000)
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#define Q_MINFLOAT ((int)0x7fffffff)
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//#define Q_MINFLOAT ((int)0x7fffffff)
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//============================================================================
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#if defined(FTE_LITTLE_ENDIAN)
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#define bigendian false
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#define LittleShort(x) ((short)(x))
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#define LittleLong(x) ((int)(x))
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#define LittleI64(x) ((qint64_t)(x))
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#define LittleFloat(x) ((float)(x))
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#define BigShort(x) (ShortSwap(x))
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#define BigLong(x) (LongSwap(x))
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#define BigI64(x) (I64Swap(x))
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#define BigFloat(x) (FloatSwap(x))
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#elif defined(FTE_BIG_ENDIAN)
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#define bigendian true
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#define BigShort(x) ((short)(x))
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#define BigLong(x) ((int)(x))
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#define BigI64(x) ((qint64_t)(x))
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#define BigFloat(x) ((float)(x))
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#define LittleShort(x) (ShortSwap(x))
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#define LittleLong(x) (LongSwap(x))
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#define LittleI64(x) (I64Swap(x))
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#define LittleFloat(x) (FloatSwap(x))
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#else
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extern qboolean bigendian;
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extern short (*BigShort) (short l);
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extern short (*LittleShort) (short l);
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extern int (*BigLong) (int l);
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extern int (*LittleLong) (int l);
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extern qint64_t (*BigI64) (qint64_t l);
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extern qint64_t (*LittleI64) (qint64_t l);
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extern float (*BigFloat) (float l);
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extern float (*LittleFloat) (float l);
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#endif
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short ShortSwap (short l);
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int LongSwap (int l);
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qint64_t I64Swap (qint64_t l);
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float FloatSwap (float f);
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void COM_CharBias (signed char *c, int size);
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void COM_SwapLittleShortBlock (short *s, int size);
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@ -28,12 +28,12 @@ typedef struct
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} SHA1_CTX;
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#define SHA1_DIGEST_SIZE 20
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#define BigLong(l) (((unsigned char*)&l)[0]<<24) | (((unsigned char*)&l)[1]<<16) | (((unsigned char*)&l)[2]<<8) | (((unsigned char*)&l)[3]<<0)
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#define ShaBigLong(l) (((unsigned char*)&l)[0]<<24) | (((unsigned char*)&l)[1]<<16) | (((unsigned char*)&l)[2]<<8) | (((unsigned char*)&l)[3]<<0)
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#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
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#define blk0(i) (block->l[i] = BigLong(block->l[i]))
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#define blk0(i) (block->l[i] = ShaBigLong(block->l[i]))
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#define blk(i) (block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \
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^block->l[(i+2)&15]^block->l[i&15],1))
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@ -3,8 +3,6 @@
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#undef stderr
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#define stderr stdout
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#define LittleLong(s) s
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#include <limits.h>
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#include <ctype.h>
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#ifdef _WIN32
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