7e62609353
Document the named field syntax that we want to implement for the decodetree script. This allows a field to be defined in terms of some other field that the instruction pattern has already set, for example: %sz_imm 10:3 sz:3 !function=expand_sz_imm to allow a function to be passed both an immediate field from the instruction and also a sz value which might have been specified by the instruction pattern directly (sz=1, etc) rather than being a simple field within the instruction. Note that the restriction on not having the format referring to the pattern and the pattern referring to the format simultaneously is a restriction of the decoder generator rather than inherently being a silly thing to do. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230523120447.728365-3-peter.maydell@linaro.org> |
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