ENTRY

You must specify at least one ENTRY point for a program. If no ENTRY exists, a warning is generated at link time.

You must not use more than one ENTRY directive in a single source file. Not every source file has to have an ENTRY directive. If more than one ENTRY exists in a single source file, an error message is generated at assembly time.

        AREA    ARMex, CODE, READONLY
        ENTRY                 ; Entry point for the application