1 @c Copyright 2001 Free Software Foundation, Inc.
2 @c This is part of the GAS manual.
3 @c For copying conditions, see the file as.texinfo.
6 @chapter Motorola M88K Dependent Features
10 * M88K Directives:: M88K Machine Directives
14 @section M88K Machine Directives
16 The M88K version of the assembler supports the following machine
20 @cindex @code{align} directive, M88K
22 This directive aligns the section program counter on the next 4-byte
25 @cindex @code{dfloat} directive, M88K
26 @item .dfloat @var{expr}
27 This assembles a double precision (64-bit) floating point constant.
29 @cindex @code{ffloat} directive, M88K
30 @item .ffloat @var{expr}
31 This assembles a single precision (32-bit) floating point constant.
33 @cindex @code{half} directive, M88K
34 @item .half @var{expr}
35 This directive assembles a half-word (16-bit) constant.
37 @cindex @code{word} directive, M88K
38 @item .word @var{expr}
39 This assembles a word (32-bit) constant.
41 @cindex @code{string} directive, M88K
42 @item .string "@var{str}"
43 This directive behaves like the standard @code{.ascii} directive for
44 copying @var{str} into the object file. The string is not terminated
47 @cindex @code{set} directive, M88K
48 @item .set @var{symbol}, @var{value}
49 This directive creates a symbol named @var{symbol} which is an alias for
50 another symbol (possibly not yet defined). This should not be confused
51 with the mnemonic @code{set}, which is a legitimate M88K instruction.
53 @cindex @code{def} directive, M88K
54 @item .def @var{symbol}, @var{value}
55 This directive is synonymous with @code{.set} and is presumably provided
56 for compatibility with other M88K assemblers.
58 @cindex @code{bss} directive, M88K
59 @item .bss @var{symbol}, @var{length}, @var{align}
60 Reserve @var{length} bytes in the bss section for a local @var{symbol},
61 aligned to the power of two specified by @var{align}. @var{length} and
62 @var{align} must be positive absolute expressions. This directive
63 differs from @samp{.lcomm} only in that it permits you to specify
64 an alignment. @xref{Lcomm,,@code{.lcomm}}.