Assembler:Commands:BSWAP

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command bswap operand

The bswap instruction reverse the byte order of the destination. Its used to convert values from Little-Endian to Big-Endian.


Reverses the byte order of a 32-bit / 64-Bit (destination) register. This instruction is provided for converting little-endian values to big-endian format and vice versa.

To swap bytes in a word value (16-bit register), use the XCHG instruction. When the BSWAP instruction references a 16-bit register, the result is undefined.


Command Parameters

Parameter Description
operand The operand to reverse byte order on


Examples

bswap eax
bswap edx
bswap rax
bswap rdx


See also


External links