Linux kernel & device driver programming

Cross-Referenced Linux and Device Driver Code

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Version: [ 2.6.11.8 ] [ 2.6.25 ] [ 2.6.25.8 ] [ 2.6.31.13 ] Architecture: [ i386 ] 
  1 #ifndef BYTEORDER_H
  2 #define BYTEORDER_H
  3 
  4 #include <sys/types.h>
  5 
  6 #ifndef BYTE_ORDER
  7 # error "Aiee: BYTE_ORDER not defined\n";
  8 #endif
  9 
 10 #define SWAP2(x) (((x>>8) & 0x00ff) |\
 11                   ((x<<8) & 0xff00))
 12 
 13 #define SWAP4(x) (((x>>24) & 0x000000ff) |\
 14                   ((x>>8)  & 0x0000ff00) |\
 15                   ((x<<8)  & 0x00ff0000) |\
 16                   ((x<<24) & 0xff000000))
 17 
 18 #endif /* BYTEORDER_H */
 19
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