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Reverse bytes in 32-bit words reverses the byte order in each 32-bit word of a register.
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 |
1 | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | Rn | Rd | ||||||||
sf | opc |
integer d = UInt(Rd);
integer n = UInt(Rn);
integer datasize = if sf == '1' then 64 else 32;
integer container_size;
case opc of
when '00'
Unreachable();
when '01'
container_size = 16;
when '10'
container_size = 32;
when '11'
if sf == '0' then UNDEFINED;
container_size = 64; if sf == '0' thenUnallocatedEncoding();
container_size = 64;
<Xd> | Is the 64-bit name of the general-purpose destination register, encoded in the "Rd" field. |
<Xn> | Is the 64-bit name of the general-purpose source register, encoded in the "Rn" field. |
bits(datasize) operand = X[n]; bits(datasize) result; integer containers = datasize DIV container_size; integer elements_per_container = container_size DIV 8; integer index = 0; integer rev_index; for c = 0 to containers-1 rev_index = index + ((elements_per_container - 1) * 8); for e = 0 to elements_per_container-1 result<rev_index + 7:rev_index> = operand<index + 7:index>; index = index + 8; rev_index = rev_index - 8; X[d] = result;
If PSTATE.DIT is 1:
Internal version only: isa v30.25v29.05, AdvSIMD v27.01v26.0, pseudocode v85-xml-00bet8_rc3v35.3
; Build timestamp: 2018-09-13T132018-06-16T09:0445
Copyright © 2010-2018 ARM Limited or its affiliates. All rights reserved. This document is Non-Confidential.
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