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target/m68k: Map FPU exceptions to FPSR register
Add helpers for reading/writing the 68881 FPSR register so that changes in floating point exception state can be seen by the application. Call these helpers in pre_load/post_load hooks to synchronize exception state. Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230803035231.429697-1-keithp@keithp.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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