ARM Architecture Reference Manual ARMv7-A and ARMv7-R edition

A5.4 Media instructions
Table A5-16 shows the allocation of encodings in this space.
Other encodings in this space are UNDEFINED.
ARM Instruction Set Encoding
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
cond 0 1 1 op1 Rd op2 1 Rn
Table A5-16 Media instructions
op1 op2 Rd Rn Instructions See Variant
000xx - - - - Parallel addition and
subtraction, signed on
page A5-22
001xx - - - - Parallel addition and
subtraction, unsigned on
page A5-23
01xxx - - - - Packing, unpacking,
saturation, and reversal on
page A5-24
10xxx - - - - Signed multiplies on
page A5-26
11000 000 1111 - Unsigned Sum of Absolute
Differences
000 not 1111 - Unsigned Sum of Absolute
Differences and Accumulate
USAD8 on page A8-500 v6
USADA8 on page A8-502 v6
1101x x10 - - Signed Bit Field Extract SBFX on page A8-308 v6T2
1110x x00 - 1111 Bit Field Clear BFC on page A8-46 v6T2
- not 1111 Bit Field Insert BFI on page A8-48 v6T2
1111x x10 - - Unsigned Bit Field Extract UBFX on page A8-466 v6T2
11111 111 - - Permanently UNDEFINED. This space will not be allocated in future.
ARM DDI 0406B Copyright © 1996-1998, 2000, 2004-2008 ARM Limited. All rights reserved. A5-21
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