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I'm in two minds about this. Part of me thinks that this should be in libgcc rather than newlib, since these are documented as part of the standard run-time support for the compiler.
My reason for putting them in libc was that they're then in the same place as the underlying mem* routines.
But the whole point of these entry points is that they can be more efficient than the mem* routines. So long-term we really don't want to implement them this way.
Maybe. I was also thinking that the the C library is more likely to know about target specific properties (size/speed preference, coprocessor support/custom insns, etc) than libgcc.
Cheers Nick
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