1 @c Copyright 2006, 2011 Free Software Foundation, Inc.
2 @c This is part of the GAS manual.
3 @c For copying conditions, see the file as.texinfo.
7 @chapter Infineon xc16x Dependent Features
11 * xc16x Directives:: xc16x Machine Directives
12 * xc16x Syntax:: xc16x Syntax
15 @node xc16x Directives
16 @section xc16x Machine Directives
18 The xc16x version of the assembler supports the following machine
22 @cindex @code{align} directive, xc16x
24 This directive aligns the section program counter on the next 2-byte
28 @cindex @code{byte} directive, xc16x
29 @item .byte @var{expr}
30 This directive assembles a half-word (8-bit) constant.
32 @cindex @code{word} directive, xc16x
33 @item .word @var{expr}
34 This assembles a word (16-bit) constant.
36 @cindex @code{ascii} directive, xc16x
37 @item .ascii "@var{ascii}"
38 This directive used for copying @var{str} into the object file.
39 The string is terminated with a null byte.
41 @cindex @code{set} directive, xc16x
42 @item .set @var{symbol}, @var{value}
43 This directive creates a symbol named @var{symbol} which is an alias for
44 another symbol (possibly not yet defined). This should not be confused
45 with the mnemonic @code{set}, which is a legitimate xc16x instruction.
49 @cindex @code{bss} directive, xc16x
50 @item .bss @var{symbol}, @var{length}
51 Reserve @var{length} bytes in the bss section for a local @var{symbol},
52 aligned to the power of two specified by @var{align}. @var{length} and
53 @var{align} must be positive absolute expressions. This directive
54 differs from @samp{.lcomm} only in that it permits you to specify
61 * xc16x-Chars:: Special Characters
65 @subsection Special Characters
67 @cindex line comment character, xc16x
68 @cindex xc16c line comment character
69 The presence of a @samp{;} appearing anywhere on a line indicates the
70 start of a comment that extends to the end of that line.
72 If a @samp{#} appears as the first character of a line then the whole
73 line is treated as a comment, but in this case the line can also be a
74 logical line number directive (@pxref{Comments}) or a preprocessor
75 control command (@pxref{Preprocessing}).
77 @cindex line separator, xc16x
78 @cindex statement separator, xc16x
79 @cindex xc16x line separator
80 The XC16X assembler does not support a line separator character.