| @c Copyright (C) 2006-2021 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. |