Echelon Neuron Manuel d'utilisateur télécharger pdf (Page 156)

IMPORT (Import External Symbol)

The IMPORT directive is used to import symbols from other Neuron Assembly

modules or a Neuron C application.

An imported symbol must be defined as a label and exported within the module

from which it is imported. Exporting a symbol makes it available to the linker.

The linker uses imported symbols to resolve references to other object modules.

It is possible, and sometimes required, to export and import a symbol within the

same assembly file to permit the linker to resolve expressions between code and

data segments.

See also APEXP (Application Symbol Export) and EXPORT (Export Symbol).

Syntax:

The IMPORT directive requires a symbol, or a list of symbols separated by

commas. This directive cannot have a label.

IMPORT symbol

IMPORT symbol, symbol, ...

Each symbol in the argument of the IMPORT directive is designated as an

imported symbol.

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Echelon Neuron Manuel d'utilisateur Page 156