All preprocessor directives must start with a %. The following preprocessor directives are supported:
| directive | syntax | notes |
|---|---|---|
define |
%define NAME body |
will textually replace NAME with body. Must end with an %end |
if |
%if cond |
The text between the %if and the following %else, %elif, %end will only be assembled if cond is true. |
else |
%else |
The text following the %else will be assembled if the condition of the previous %if/%elif was false |
elif |
%elif cond |
The text between the %elif and the following %else, %elif or %end will be assembled only if the condition of the previous %if/%elif was false and cond is true. |
end |
%end |
Ends a preprocessor sequence. |
Macros defined it with %define must have their name prefixed with @ in order to be expanded as macros.
__counter__ is a predefined preprocessor macro that acts as a counter starting from 0, and incrementing with each expansion.
Labels will follow this syntax: .label_name:. Labels must be alphanumeric and should not start with digits(for now).