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@c Copyright 2006, 2011 Free Software Foundation, Inc.

@c This is part of the GAS manual.

@c For copying conditions, see the file as.texinfo.

@page

@node xc16x-Dependent

@chapter Infineon xc16x Dependent Features

@cindex xc16x support

@menu

* xc16x Directives::     xc16x Machine Directives

* xc16x Syntax::         xc16x Syntax

@end menu

@node xc16x Directives

@section xc16x Machine Directives

The xc16x version of the assembler supports the following machine

directives:

@table @code

@cindex @code{align} directive, xc16x

@item .align

This directive aligns the section program counter on the next 2-byte

boundary.

@cindex @code{byte} directive, xc16x

@item .byte @var{expr}

This directive assembles a half-word (8-bit) constant.

@cindex @code{word} directive, xc16x

@item .word @var{expr}

This assembles a word (16-bit) constant.

@cindex @code{ascii} directive, xc16x

@item .ascii "@var{ascii}"

This directive used for copying @var{str} into the object file.

The string is terminated with a null byte.

@cindex @code{set} directive, xc16x

@item .set @var{symbol}, @var{value}

This directive creates a symbol named @var{symbol} which is an alias for

another symbol (possibly not yet defined).  This should not be confused

with the mnemonic @code{set}, which is a legitimate xc16x instruction.

@cindex @code{bss} directive, xc16x

@item .bss @var{symbol}, @var{length}

Reserve @var{length} bytes in the bss section for a local @var{symbol},

aligned to the power of two specified by @var{align}.  @var{length} and

@var{align} must be positive absolute expressions.  This directive

differs from @samp{.lcomm} only in that it permits you to specify

an alignment.

@end table

@node xc16x Syntax

@section xc16x Syntax

@menu

* xc16x-Chars::                Special Characters

@end menu

@node xc16x-Chars

@subsection Special Characters

@cindex line comment character, xc16x

@cindex xc16c line comment character

The presence of a @samp{;} appearing anywhere on a line indicates the

start of a comment that extends to the end of that line.

If a @samp{#} appears as the first character of a line then the whole

line is treated as a comment, but in this case the line can also be a

logical line number directive (@pxref{Comments}) or a preprocessor

control command (@pxref{Preprocessing}).

@cindex line separator, xc16x

@cindex statement separator, xc16x

@cindex xc16x line separator

The XC16X assembler does not support a line separator character.