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9056a93c9a
We currently store the M profile CPU register state PRIMASK and FAULTMASK in the daif field of the CPU state in its I and F bits. This is a legacy from the original implementation, which tried to share the cpu_exec_interrupt code between A profile and M profile. We've since separated out the two cases because they are significantly different, so now there is no common code between M and A profile which looks at env->daif: all the uses are either in A-only or M-only code paths. Sharing the state fields now is just confusing, and will make things awkward when we implement v8M, where the PRIMASK and FAULTMASK registers are banked between security states. Switch M profile over to using v7m.faultmask and v7m.primask fields for these registers. Backports commit e6ae5981ea4b0f6feb223009a5108582e7644f8f from qemu |
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