1@c Copyright (C) 2006-2020 Free Software Foundation, Inc. 2@c This is part of the GAS manual. 3@c For copying conditions, see the file as.texinfo. 4 5@page 6@node xc16x-Dependent 7@chapter Infineon xc16x Dependent Features 8 9@cindex xc16x support 10@menu 11* xc16x Directives:: xc16x Machine Directives 12* xc16x Syntax:: xc16x Syntax 13@end menu 14 15@node xc16x Directives 16@section xc16x Machine Directives 17 18The xc16x version of the assembler supports the following machine 19directives: 20 21@table @code 22@cindex @code{align} directive, xc16x 23@item .align 24This directive aligns the section program counter on the next 2-byte 25boundary. 26 27 28@cindex @code{byte} directive, xc16x 29@item .byte @var{expr} 30This directive assembles a half-word (8-bit) constant. 31 32@cindex @code{word} directive, xc16x 33@item .word @var{expr} 34This assembles a word (16-bit) constant. 35 36@cindex @code{ascii} directive, xc16x 37@item .ascii "@var{ascii}" 38This directive used for copying @var{str} into the object file. 39The string is terminated with a null byte. 40 41@cindex @code{set} directive, xc16x 42@item .set @var{symbol}, @var{value} 43This directive creates a symbol named @var{symbol} which is an alias for 44another symbol (possibly not yet defined). This should not be confused 45with the mnemonic @code{set}, which is a legitimate xc16x instruction. 46 47 48 49@cindex @code{bss} directive, xc16x 50@item .bss @var{symbol}, @var{length} 51Reserve @var{length} bytes in the bss section for a local @var{symbol}, 52aligned to the power of two specified by @var{align}. @var{length} and 53@var{align} must be positive absolute expressions. This directive 54differs from @samp{.lcomm} only in that it permits you to specify 55an alignment. 56@end table 57 58@node xc16x Syntax 59@section xc16x Syntax 60@menu 61* xc16x-Chars:: Special Characters 62@end menu 63 64@node xc16x-Chars 65@subsection Special Characters 66 67@cindex line comment character, xc16x 68@cindex xc16c line comment character 69The presence of a @samp{;} appearing anywhere on a line indicates the 70start of a comment that extends to the end of that line. 71 72If a @samp{#} appears as the first character of a line then the whole 73line is treated as a comment, but in this case the line can also be a 74logical line number directive (@pxref{Comments}) or a preprocessor 75control command (@pxref{Preprocessing}). 76 77@cindex line separator, xc16x 78@cindex statement separator, xc16x 79@cindex xc16x line separator 80The XC16X assembler does not support a line separator character. 81