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target/ppc: update {get,set}_dfp{64,128}() helper functions to read/w…
…rite DFP numbers correctly Since commit ef96e3a "target/ppc: move FP and VMX registers into aligned vsr register array" FP registers are no longer stored consecutively in memory and so the current method of combining FP register pairs into DFP numbers is incorrect. Firstly update the definition of the dh_*_fprp defines in helper.h to reflect that FP registers are now stored as part of an array of ppc_vsr_t elements rather than plain uint64_t elements, and then introduce a new ppc_fprp_t type which conceptually represents a DFP even-odd register pair to be consumed by the DFP helper functions. Finally update the new DFP {get,set}_dfp{64,128}() helper functions to convert between DFP numbers and DFP even-odd register pairs correctly, making use of the existing VsrD() macro to access the correct elements regardless of host endian. Fixes: ef96e3a "target/ppc: move FP and VMX registers into aligned vsr register array" Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20190926185801.11176-4-mark.cave-ayland@ilande.co.uk> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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