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Is there a more efficient way to swap two bytes?

AceGopher

I am targeting a Cortex-M0 processor, and am new to Thumb assembly available on the M0. Is there more efficient way to swap two bytes in a 32-bit word (in this example, the middle two bytes)? Thanks!

  LDR R0, =0xAABBCCDD
  LDR R1, =0x00FF0000
  LDR R2, =0x0000FF00
  MOV R3, R0
  MOV R4, R0
  ANDS R3, R1
  ANDS R4, R2
  BICS R0, R1
  BICS R0, R2
  LSRS R3, #8
  LSLS R4, #8
  ORRS R0, R3
  ORRS R0, R4

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