target/ppc: introduce get_fpr() and set_fpr() helpers for FP register access
These helpers allow us to move FP register values to/from the specified TCGv_i64 argument in the VSR helpers to be introduced shortly. To prevent FP helpers accessing the cpu_fpr array directly, add extra TCG temporaries as required. Signed-off-by: NMark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: NRichard Henderson <richard.henderson@linaro.org> Acked-by: NDavid Gibson <david@gibson.dropbear.id.au> Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>
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