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### `.func` name`[,`label`]`

`.func` emits debugging information to denote function name, and is ignored unless the file is assembled with debugging enabled. Only `--gstabs[+]` is currently supported. label is the entry point of the function and if omitted name prepended with the `leading char` is used. `leading char` is usually `_` or nothing, depending on the target. All functions are currently defined to have `void` return type. The function must be terminated with `.endfunc`.