Re: LC040 FPU emulation
>> A wild idea: if the appropriate exception is not generated, why do I get an
>> 'Illegal instruction' exception? If I catch all the other exceptions and check
>> whether there was a FPU instruction before the problem, would it help?
One more data point: sometimes it gives SIGILL, sometimes SIGSEGV, and usually
SIGBUS. This all from the same binary with the same arguments.
>> - Insertion of a NOP before the FPU instruction solves the
JaW> Now, _this_ is interesting! Couldn't the program loader be patched to
JaW> insert a NOP before any and all FPU instruction?
I doubt it would be easy enough. Inserting a command would shift all the
following commands so code offsets would change.
Meelis Roos (email@example.com)