Peter Maydell
2dc6bebde9
bitops: Provide sextract32() and sextract64()
A common operation in instruction decoding is to take a field from an instruction that represents a signed integer in some arbitrary number of bits, and sign extend it into a C signed integer type for manipulation. Provide new functions sextract32() and sextract64() which perform this operation; they are like the existing extract32() and extract64() except that the field is sign-extended into the returned result. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net> Message-id: 1372419632-5521-2-git-send-email-peter.maydell@linaro.org Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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Read the documentation in qemu-doc.html or on http://wiki.qemu.org - QEMU team
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