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target-arm: Implement AArch64 SPSR_EL1
Implement the AArch64 SPSR_EL1. For compatibility with how KVM handles SPSRs and with the architectural mapping between AArch32 and AArch64, we put this in the banked_spsr[] array in the slot that is used for SVC in AArch32. This means we need to extend the array from uint32_t to uint64_t, which requires some reworking of the 32 bit KVM save/restore code. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
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