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tcg: Implement multiword multiply helpers
Signed-off-by: Richard Henderson <rth@twiddle.net>Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
tcg: add div/rem 32-bit helpers
Some targets like ARM would benefit to use 32-bit helpers fordiv/rem/divu/remu.
Create a #define for div2 so that targets can select betweendiv, div2 and helper implementation. Use the helper version if noneof the #define are present....
Compile TCG runtime library only once
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>