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REV64
Reverse Bytes.
This instruction is an alias of REV.
The equivalent instruction is REV .Xd, Xn
Syntax
REV64
Xd, Xn
Where:
Xd- Is the 64-bit name of the general-purpose destination register.
Xn- Is the 64-bit name of the general-purpose source register.
Usage
Reverse Bytes reverses the byte order in a 64-bit general-purpose register.
When assembling for ARMv8.2, an assembler must support this pseudo-instruction. It is optional whether an assembler supports this pseudo-instruction when assembling for an architecture earlier than ARMv8.2.