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18bb21c035
Like AArch64, M-profile floating point has no FPEXC enable bit to gate floating point; so always set the VFPEN TB flag. M-profile also has CPACR and NSACR similar to A-profile; they behave slightly differently: * the CPACR is banked between Secure and Non-Secure * if the NSACR forces a trap then this is taken to the Secure state, not the Non-Secure state Honour the CPACR and NSACR settings. The NSACR handling requires us to borrow the exception.target_el field (usually meaningless for M profile) to distinguish the NOCP UsageFault taken to Secure state from the more usual fault taken to the current security state. Backports commit d87513c0abcbcd856f8e1dee2f2d18903b2c3ea2 from qemu |
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