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comparison include/SDL_endian.h @ 1044:d36ea7925763

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Optimize also for 68020 and higher CPUs
author Patrice Mandin <patmandin@gmail.com>
date Wed, 30 Mar 2005 12:38:03 +0000
parents aebfa3ce2a53
children c9b51268668f
comparison
equal deleted inserted replaced
1043:21d1d05aad39 1044:d36ea7925763
77 Uint16 result; 77 Uint16 result;
78 78
79 __asm__("rlwimi %0,%2,8,16,23" : "=&r" (result) : "0" (x >> 8), "r" (x)); 79 __asm__("rlwimi %0,%2,8,16,23" : "=&r" (result) : "0" (x >> 8), "r" (x));
80 return result; 80 return result;
81 } 81 }
82 #elif defined(__GNUC__) && defined(__M68000__) 82 #elif defined(__GNUC__) && (defined(__M68000__) || defined(__M68020__))
83 static __inline__ Uint16 SDL_Swap16(Uint16 x) 83 static __inline__ Uint16 SDL_Swap16(Uint16 x)
84 { 84 {
85 __asm__("rorw #8,%0" : "=d" (x) : "0" (x) : "cc"); 85 __asm__("rorw #8,%0" : "=d" (x) : "0" (x) : "cc");
86 return x; 86 return x;
87 } 87 }
111 __asm__("rlwimi %0,%2,24,16,23" : "=&r" (result) : "0" (x>>24), "r" (x)); 111 __asm__("rlwimi %0,%2,24,16,23" : "=&r" (result) : "0" (x>>24), "r" (x));
112 __asm__("rlwimi %0,%2,8,8,15" : "=&r" (result) : "0" (result), "r" (x)); 112 __asm__("rlwimi %0,%2,8,8,15" : "=&r" (result) : "0" (result), "r" (x));
113 __asm__("rlwimi %0,%2,24,0,7" : "=&r" (result) : "0" (result), "r" (x)); 113 __asm__("rlwimi %0,%2,24,0,7" : "=&r" (result) : "0" (result), "r" (x));
114 return result; 114 return result;
115 } 115 }
116 #elif defined(__GNUC__) && defined(__M68000__) 116 #elif defined(__GNUC__) && (defined(__M68000__) || defined(__M68020__))
117 static __inline__ Uint32 SDL_Swap32(Uint32 x) 117 static __inline__ Uint32 SDL_Swap32(Uint32 x)
118 { 118 {
119 __asm__("rorw #8,%0\n\tswap %0\n\tror #8,%0" : "=d" (x) : "0" (x) : "cc"); 119 __asm__("rorw #8,%0\n\tswap %0\n\trorw #8,%0" : "=d" (x) : "0" (x) : "cc");
120 return x; 120 return x;
121 } 121 }
122 #else 122 #else
123 static __inline__ Uint32 SDL_Swap32(Uint32 x) { 123 static __inline__ Uint32 SDL_Swap32(Uint32 x) {
124 return((x<<24)|((x<<8)&0x00FF0000)|((x>>8)&0x0000FF00)|(x>>24)); 124 return((x<<24)|((x<<8)&0x00FF0000)|((x>>8)&0x0000FF00)|(x>>24));