target-lm32: kill cpu_abort() calls
Instead of killing QEMU, translate instructions which are not available on the CPU model as a noop and issue a log message at translation time. On the real hardware CPU unknown opcodes results in undefined behaviour. These changes prepare the removal of CPULM32State from DisasContext. Signed-off-by: NMichael Walle <michael@walle.cc> Reviewed-by: NAndreas Färber <afaerber@suse.de>
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