On 5/23/23 05:04, Peter Maydell wrote:
Implement support for named fields, i.e. where one field is defined in terms of another, rather than directly in terms of bits extracted from the instruction.The new method referenced_fields() on all the Field classes returns a list of fields that this field references. This just passes through, except for the new NamedField class. We can then use referenced_fields() to: * construct a list of 'dangling references' for a format or pattern, which is the fields that the format/pattern uses but doesn't define itself * do a topological sort, so that we output "field = value" assignments in an order that means that we assign a field before we reference it in a subsequent assignment * check when we output the code for a pattern whether we need to fill in the format fields before or after the pattern fields, and do other error checking Signed-off-by: Peter Maydell<peter.mayd...@linaro.org> --- scripts/decodetree.py | 145 ++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 139 insertions(+), 6 deletions(-)
Reviewed-by: Richard Henderson <richard.hender...@linaro.org> r~
