xxbrh

Pseudocode Operation

if MSR.VSX=0 then VSX_Unavailable()
do i = 0 to 7
    vsrc ← VSR[32×BX+B].hword[i]
    do j = 0 to 1
        VSR[32×TX+T].hword[i].byte[j] ← vsrc.byte[1-j]
    end
end

Programming Note

The xxbrh instruction is useful for reversing the byte order of each halfword in a vector, which can be necessary for data format conversion or compatibility. Ensure that the VSX (Vector Scalar Extensions) are enabled by checking and setting the appropriate bit in the MSR register. This instruction operates on 128-bit vectors and requires proper alignment of the source and target registers. Be cautious of endianness issues when using this instruction, as it directly manipulates byte order.

Example