\input texinfo @c -*-Texinfo-*-
@c Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
-@c 2001, 2002, 2003, 2004
+@c 2001, 2002, 2003, 2004, 2005
@c Free Software Foundation, Inc.
@c UPDATE!! On future updates--
@c (1) check for new machine-dep cmdline options in
@smallexample
@c man begin SYNOPSIS
@value{AS} [@b{-a}[@b{cdhlns}][=@var{file}]] [@b{--alternate}] [@b{-D}]
- [@b{--defsym} @var{sym}=@var{val}] [@b{-f}] [@b{-g}] [@b{--gstabs}] [@b{--gstabs+}]
- [@b{--gdwarf-2}] [@b{--help}] [@b{-I} @var{dir}] [@b{-J}] [@b{-K}] [@b{-L}]
- [@b{--listing-lhs-width}=@var{NUM}] [@b{--listing-lhs-width2}=@var{NUM}]
- [@b{--listing-rhs-width}=@var{NUM}] [@b{--listing-cont-lines}=@var{NUM}]
- [@b{--keep-locals}] [@b{-o} @var{objfile}] [@b{-R}] [@b{--statistics}] [@b{-v}]
- [@b{-version}] [@b{--version}] [@b{-W}] [@b{--warn}] [@b{--fatal-warnings}]
- [@b{-w}] [@b{-x}] [@b{-Z}] [@b{--target-help}] [@var{target-options}]
- [@b{--}|@var{files} @dots{}]
+ [@b{--defsym} @var{sym}=@var{val}] [@b{-f}] [@b{-g}] [@b{--gstabs}]
+ [@b{--gstabs+}] [@b{--gdwarf-2}] [@b{--help}] [@b{-I} @var{dir}] [@b{-J}]
+ [@b{-K}] [@b{-L}] [@b{--listing-lhs-width}=@var{NUM}]
+ [@b{--listing-lhs-width2}=@var{NUM}] [@b{--listing-rhs-width}=@var{NUM}]
+ [@b{--listing-cont-lines}=@var{NUM}] [@b{--keep-locals}] [@b{-o}
+ @var{objfile}] [@b{-R}] [@b{--reduce-memory-overheads}] [@b{--statistics}]
+ [@b{-v}] [@b{-version}] [@b{--version}] [@b{-W}] [@b{--warn}]
+ [@b{--fatal-warnings}] [@b{-w}] [@b{-x}] [@b{-Z}] [@b{--target-help}]
+ [@var{target-options}] [@b{--}|@var{files} @dots{}]
@c
@c Target dependent options are listed below. Keep the list sorted.
@c Add an empty line for separation.
[@b{-mconstant-gp}|@b{-mauto-pic}]
[@b{-milp32}|@b{-milp64}|@b{-mlp64}|@b{-mp64}]
[@b{-mle}|@b{mbe}]
+ [@b{-mtune=itanium1}|@b{-mtune=itanium2}]
[@b{-munwind-check=warning}|@b{-munwind-check=error}]
[@b{-mhint.b=ok}|@b{-mhint.b=warning}|@b{-mhint.b=error}]
[@b{-x}|@b{-xexplicit}] [@b{-xauto}] [@b{-xdebug}]
@item -R
Fold the data section into the text section.
+@kindex --hash-size=@var{number}
+Set the default size of GAS's hash tables to a prime number close to
+@var{number}. Increasing this value can reduce the length of time it takes the
+assembler to perform its tasks, at the expense of increasing the assembler's
+memory requirements. Similarly reducing this value can reduce the memory
+requirements at the expense of speed.
+
+@item --reduce-memory-overheads
+This option reduces GAS's memory requirements, at the expense of making the
+assembly processes slower. Currently this switch is a synonym for
+@samp{--hash-size=4051}, but in the future it may have other effects as well.
+
@item --statistics
Print the maximum space (in bytes) and total time (in seconds) used by
assembly.
has been defined. Note a symbol which has been referenced but not yet defined
is considered to be undefined.
+@cindex @code{ifb} directive
+@item .ifb @var{text}
+Assembles the following section of code if the operand is blank (empty).
+
@cindex @code{ifc} directive
@item .ifc @var{string1},@var{string2}
Assembles the following section of code if the two strings are the same. The
@item .iflt @var{absolute expression}
Assembles the following section of code if the argument is less than zero.
+@cindex @code{ifnb} directive
+@item .ifnb @var{text}
+Like @code{.ifb}, but the sense of the test is reversed: this assembles the
+following section of code if the operand is non-blank (non-empty).
+
@cindex @code{ifnc} directive
@item .ifnc @var{string1},@var{string2}.
Like @code{.ifc}, but the sense of the test is reversed: this assembles the
move d3,sp@@-
@end example
+For some caveats with the spelling of @var{symbol}, see also the discussion
+at @xref{Macro}.
+
@node Irpc
@section @code{.irpc @var{symbol},@var{values}}@dots{}
move d3,sp@@-
@end example
+For some caveats with the spelling of @var{symbol}, see also the discussion
+at @xref{Macro}.
+
@node Lcomm
@section @code{.lcomm @var{symbol} , @var{length}}
@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
-macro argument by following the name with @samp{=@var{deflt}}. For
-example, these are all valid @code{.macro} statements:
+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
+definitions. For example, these are all valid @code{.macro} statements:
@table @code
@item .macro comm
@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}.
+Note that since each of the @var{macargs} can be an identifier exactly
+as any other one permitted by the target architecture, there may be
+occasional problems if the target hand-crafts special meanings to certain
+characters when they occur in a special position. For example, if colon
+(@code{:}) is generally permitted to be part of a symbol name, but the
+architecture specific code special-cases it when occuring as the final
+character of a symbol (to denote a label), then the macro parameter
+replacement code will have no way of knowing that and consider the whole
+construct (including the colon) an identifier, and check only this
+identifier for being the subject to parameter substitution. In this
+example, besides the potential of just separating identifier and colon
+by white space, using alternate macro syntax (@xref{Altmacro}.) and
+ampersand (@code{&}) as the character to separate literal text from macro
+parameters (or macro parameters from one another) would provide a way to
+achieve the same effect:
+
+@example
+ .altmacro
+ .macro label l
+l&:
+ .endm
+@end example
+
+This applies identically to the identifiers used in @code{.irp} (@xref{Irp}.)
+and @code{.irpc} (@xref{Irpc}.).
+
@item .endm
@cindex @code{endm} directive
Mark the end of a macro definition.
projects / deliverable / binutils-gdb.git / blobdiff