target-arm: A64: Add floating-point<->integer conversion instructions
Add support for the AArch64 floating-point <-> integer conversion instructions to disas_fpintconv. In the process we can rearrange and simplify the detection of unallocated encodings a little. We also correct a typo in the instruction encoding diagram for this instruction group: bit 21 is 1, not 0. Signed-off-by: NWill Newton <will.newton@linaro.org> Signed-off-by: NPeter Maydell <peter.maydell@linaro.org> Reviewed-by: NRichard Henderson <rth@twiddle.net>
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