as: MSP430 Directives
9.28.4 MSP 430 Machine Directives
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'.file'
This directive is ignored; it is accepted for compatibility with
other MSP 430 assemblers.
_Warning:_ in other versions of the GNU assembler, '.file' is
used for the directive called '.app-file' in the MSP 430
support.
'.line'
This directive is ignored; it is accepted for compatibility with
other MSP 430 assemblers.
'.arch'
Sets the target microcontroller in the same way as the '-mmcu'
command-line option.
'.cpu'
Sets the target architecture in the same way as the '-mcpu'
command-line option.
'.profiler'
This directive instructs assembler to add new profile entry to the
object file.
'.refsym'
This directive instructs assembler to add an undefined reference to
the symbol following the directive. The maximum symbol name length
is 1023 characters. No relocation is created for this symbol; it
will exist purely for pulling in object files from archives. Note
that this reloc is not sufficient to prevent garbage collection;
use a KEEP() directive in the linker file to preserve such objects.