target/ppc: introduce single fpr_offset() function
Instead of having multiple copies of the offset calculation logic, move it to a single fpr_offset() function. Signed-off-by: NMark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: NRichard Henderson <richard.henderson@linaro.org> Message-Id: <20190307180520.13868-2-mark.cave-ayland@ilande.co.uk> Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>
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