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Diffstat (limited to 'gas/doc/as.texinfo')
| -rw-r--r-- | gas/doc/as.texinfo | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/gas/doc/as.texinfo b/gas/doc/as.texinfo index 8186aba..4db81f6 100644 --- a/gas/doc/as.texinfo +++ b/gas/doc/as.texinfo @@ -4866,7 +4866,10 @@ With that definition, @samp{SUM 0,5} is equivalent to this assembly input: @cindex @code{macro} directive Begin the definition of a macro called @var{macname}. If your macro definition requires arguments, specify their names after the macro name, -separated by commas or spaces. You can supply a default value for any +separated by commas or spaces. You can qualify the macro argument to +indicate whether all invocations must specify a non-blank value (through +@samp{:@code{req}}), or whether it takes all of the remaining arguments +(through @samp{:@code{vararg}}). You can supply a default value for any macro argument by following the name with @samp{=@var{deflt}}. You cannot define two macros with the same @var{macname} unless it has been subject to the @code{.purgem} directive (@xref{Purgem}.) between the two @@ -4893,6 +4896,12 @@ After the definition is complete, you can call the macro either as @samp{0}, and @samp{\p2} evaluating to @var{b}). @end table +@item .macro m p1:req, p2=0, p3:vararg +Begin the definition of a macro called @code{m}, with at least three +arguments. The first argument must always have a value specified, but +not the second, which instead has a default value. The third formal +will get assigned all remaining arguments specified at invocation time. + When you call a macro, you can specify the argument values either by position, or by keyword. For example, @samp{sum 9,17} is equivalent to @samp{sum to=17, from=9}. |