arch/arm/lib/bswapsdi2.S

   1 #include <linux/linkage.h>
   2
   3 #if __LINUX_ARM_ARCH__ >= 6
   4 ENTRY(__bswapsi2)
   5         rev r0, r0
   6         bx lr
   7 ENDPROC(__bswapsi2)
   8
   9 ENTRY(__bswapdi2)
  10         rev r3, r0
  11         rev r0, r1
  12         mov r1, r3
  13         bx lr
  14 ENDPROC(__bswapdi2)
  15 #else
  16 ENTRY(__bswapsi2)
  17         eor r3, r0, r0, ror #16
  18         mov r3, r3, lsr #8
  19         bic r3, r3, #0xff00
  20         eor r0, r3, r0, ror #8
  21         mov pc, lr
  22 ENDPROC(__bswapsi2)
  23
  24 ENTRY(__bswapdi2)
  25         mov ip, r1
  26         eor r3, ip, ip, ror #16
  27         eor r1, r0, r0, ror #16
  28         mov r1, r1, lsr #8
  29         mov r3, r3, lsr #8
  30         bic r3, r3, #0xff00
  31         bic r1, r1, #0xff00
  32         eor r1, r1, r0, ror #8
  33         eor r0, r3, ip, ror #8
  34         mov pc, lr
  35 ENDPROC(__bswapdi2)
  36 #endif