arch/c6x/include/asm/swab.h

   1 /*
   2  *  Copyright (C) 2011 Texas Instruments Incorporated
   3  *  Author: Mark Salter <msalter@redhat.com>
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License version 2 as
   7  *  published by the Free Software Foundation.
   8  */
   9 #ifndef _ASM_C6X_SWAB_H
  10 #define _ASM_C6X_SWAB_H
  11
  12 static inline __attribute_const__ __u16 __c6x_swab16(__u16 val)
  13 {
  14         asm("swap4 .l1 %0,%0\n" : "+a"(val));
  15         return val;
  16 }
  17
  18 static inline __attribute_const__ __u32 __c6x_swab32(__u32 val)
  19 {
  20         asm("swap4 .l1 %0,%0\n"
  21             "swap2 .l1 %0,%0\n"
  22             : "+a"(val));
  23         return val;
  24 }
  25
  26 static inline __attribute_const__ __u64 __c6x_swab64(__u64 val)
  27 {
  28         asm("   swap2 .s1 %p0,%P0\n"
  29             "|| swap2 .l1 %P0,%p0\n"
  30             "   swap4 .l1 %p0,%p0\n"
  31             "   swap4 .l1 %P0,%P0\n"
  32             : "+a"(val));
  33         return val;
  34 }
  35
  36 static inline __attribute_const__ __u32 __c6x_swahw32(__u32 val)
  37 {
  38         asm("swap2 .l1 %0,%0\n" : "+a"(val));
  39         return val;
  40 }
  41
  42 static inline __attribute_const__ __u32 __c6x_swahb32(__u32 val)
  43 {
  44         asm("swap4 .l1 %0,%0\n" : "+a"(val));
  45         return val;
  46 }
  47
  48 #define __arch_swab16 __c6x_swab16
  49 #define __arch_swab32 __c6x_swab32
  50 #define __arch_swab64 __c6x_swab64
  51 #define __arch_swahw32 __c6x_swahw32
  52 #define __arch_swahb32 __c6x_swahb32
  53
  54 #endif /* _ASM_C6X_SWAB_H */