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decodetree: Extend argument set syntax to allow types

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Rather than force all structure members to be 'int',
allow the type of the member to be specified.

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-04-29 10:03:59 -07:00
parent 60c425f328
commit af93ccacc7
3 changed files with 36 additions and 21 deletions
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11
docs/devel/decodetree.rst
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@ -40,9 +40,6 @@ and returns an integral value extracted from there.
A field with no ``unnamed_fields`` and no ``!function`` is in error.
FIXME: the fields of the structure into which this result will be stored
is restricted to ``int``. Which means that we cannot expand 64-bit items.
Field examples:
+---------------------------+---------------------------------------------+
@ -66,9 +63,14 @@ Argument Sets
Syntax::
args_def := '&' identifier ( args_elt )+ ( !extern )?
args_elt := identifier
args_elt := identifier (':' identifier)?
Each *args_elt* defines an argument within the argument set.
If the form of the *args_elt* contains a colon, the first
identifier is the argument name and the second identifier is
the argument type. If the colon is missing, the argument
type will be ``int``.
Each argument set will be rendered as a C structure "arg_$name"
with each of the fields being one of the member arguments.
@ -86,6 +88,7 @@ Argument set examples::
&reg3 ra rb rc
&loadstore reg base offset
&longldst reg base offset:int64_t
Formats