as.1

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.IP "\fB\-ac\fR" 4
.IX Item "-ac"
omit false conditionals
.IP "\fB\-ad\fR" 4
.IX Item "-ad"
omit debugging directives
.IP "\fB\-ah\fR" 4
.IX Item "-ah"
include high-level source
.IP "\fB\-al\fR" 4
.IX Item "-al"
include assembly
.IP "\fB\-am\fR" 4
.IX Item "-am"
include macro expansions
.IP "\fB\-an\fR" 4
.IX Item "-an"
omit forms processing
.IP "\fB\-as\fR" 4
.IX Item "-as"
include symbols
.IP "\fB=file\fR" 4
.IX Item "=file"
set the name of the listing file
.RE
.RS 4
.Sp
You may combine these options; for example, use \fB\-aln\fR for assembly
listing without forms processing.  The \fB=file\fR option, if used, must be
the last one.  By itself, \fB\-a\fR defaults to \fB\-ahls\fR.
.RE
.IP "\fB\-\-alternate\fR" 4
.IX Item "--alternate"
Begin in alternate macro mode, see \fBAltmacro,,\f(CB\*(C`.altmacro\*(C'\fB\fR.
.IP "\fB\-D\fR" 4
.IX Item "-D"
Ignored.  This option is accepted for script compatibility with calls to
other assemblers.
.IP "\fB\-\-defsym\fR \fIsym\fR\fB=\fR\fIvalue\fR" 4
.IX Item "--defsym sym=value"
Define the symbol \fIsym\fR to be \fIvalue\fR before assembling the input file.
\&\fIvalue\fR must be an integer constant.  As in C, a leading \fB0x\fR
indicates a hexadecimal value, and a leading \fB0\fR indicates an octal value.
.IP "\fB\-f\fR" 4
.IX Item "-f"
\&\*(L"fast\*(R"\-\-\-skip whitespace and comment preprocessing (assume source is
compiler output).
.IP "\fB\-g\fR" 4
.IX Item "-g"
.PD 0
.IP "\fB\-\-gen\-debug\fR" 4
.IX Item "--gen-debug"
.PD
Generate debugging information for each assembler source line using whichever
debug format is preferred by the target.  This currently means either \s-1STABS\s0,
\&\s-1ECOFF\s0 or \s-1DWARF2\s0.
.IP "\fB\-\-gstabs\fR" 4
.IX Item "--gstabs"
Generate stabs debugging information for each assembler line.  This
may help debugging assembler code, if the debugger can handle it.
.IP "\fB\-\-gstabs+\fR" 4
.IX Item "--gstabs+"
Generate stabs debugging information for each assembler line, with \s-1GNU\s0
extensions that probably only gdb can handle, and that could make other
debuggers crash or refuse to read your program.  This
may help debugging assembler code.  Currently the only \s-1GNU\s0 extension is
the location of the current working directory at assembling time.
.IP "\fB\-\-gdwarf\-2\fR" 4
.IX Item "--gdwarf-2"
Generate \s-1DWARF2\s0 debugging information for each assembler line.  This
may help debugging assembler code, if the debugger can handle it.  Note\-\-\-this
option is only supported by some targets, not all of them.
.IP "\fB\-\-help\fR" 4
.IX Item "--help"
Print a summary of the command line options and exit.
.IP "\fB\-\-target\-help\fR" 4
.IX Item "--target-help"
Print a summary of all target specific options and exit.
.IP "\fB\-I\fR \fIdir\fR" 4
.IX Item "-I dir"
Add directory \fIdir\fR to the search list for \f(CW\*(C`.include\*(C'\fR directives.
.IP "\fB\-J\fR" 4
.IX Item "-J"
Don't warn about signed overflow.
.IP "\fB\-K\fR" 4
.IX Item "-K"
Issue warnings when difference tables altered for long displacements.
.IP "\fB\-L\fR" 4
.IX Item "-L"
.PD 0
.IP "\fB\-\-keep\-locals\fR" 4
.IX Item "--keep-locals"
.PD
Keep (in the symbol table) local symbols.  On traditional a.out systems
these start with \fBL\fR, but different systems have different local
label prefixes.
.IP "\fB\-\-listing\-lhs\-width=\fR\fInumber\fR" 4
.IX Item "--listing-lhs-width=number"
Set the maximum width, in words, of the output data column for an assembler
listing to \fInumber\fR.
.IP "\fB\-\-listing\-lhs\-width2=\fR\fInumber\fR" 4
.IX Item "--listing-lhs-width2=number"
Set the maximum width, in words, of the output data column for continuation
lines in an assembler listing to \fInumber\fR.
.IP "\fB\-\-listing\-rhs\-width=\fR\fInumber\fR" 4
.IX Item "--listing-rhs-width=number"
Set the maximum width of an input source line, as displayed in a listing, to
\&\fInumber\fR bytes.
.IP "\fB\-\-listing\-cont\-lines=\fR\fInumber\fR" 4
.IX Item "--listing-cont-lines=number"
Set the maximum number of lines printed in a listing for a single line of input
to \fInumber\fR + 1.
.IP "\fB\-o\fR \fIobjfile\fR" 4
.IX Item "-o objfile"
Name the object-file output from \fBas\fR \fIobjfile\fR.
.IP "\fB\-R\fR" 4
.IX Item "-R"
Fold the data section into the text section.
.Sp
Set the default size of \s-1GAS\s0's hash tables to a prime number close to
\&\fInumber\fR.  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.
.IP "\fB\-\-reduce\-memory\-overheads\fR" 4
.IX Item "--reduce-memory-overheads"
This option reduces \s-1GAS\s0's memory requirements, at the expense of making the
assembly processes slower.  Currently this switch is a synonym for
\&\fB\-\-hash\-size=4051\fR, but in the future it may have other effects as well.
.IP "\fB\-\-statistics\fR" 4
.IX Item "--statistics"
Print the maximum space (in bytes) and total time (in seconds) used by
assembly.
.IP "\fB\-\-strip\-local\-absolute\fR" 4
.IX Item "--strip-local-absolute"
Remove local absolute symbols from the outgoing symbol table.
.IP "\fB\-v\fR" 4
.IX Item "-v"
.PD 0
.IP "\fB\-version\fR" 4
.IX Item "-version"
.PD
Print the \fBas\fR version.
.IP "\fB\-\-version\fR" 4
.IX Item "--version"
Print the \fBas\fR version and exit.
.IP "\fB\-W\fR" 4
.IX Item "-W"
.PD 0
.IP "\fB\-\-no\-warn\fR" 4
.IX Item "--no-warn"
.PD
Suppress warning messages.
.IP "\fB\-\-fatal\-warnings\fR" 4
.IX Item "--fatal-warnings"
Treat warnings as errors.
.IP "\fB\-\-warn\fR" 4
.IX Item "--warn"
Don't suppress warning messages or treat them as errors.
.IP "\fB\-w\fR" 4
.IX Item "-w"
Ignored.
.IP "\fB\-x\fR" 4
.IX Item "-x"
Ignored.
.IP "\fB\-Z\fR" 4
.IX Item "-Z"
Generate an object file even after errors.
.IP "\fB\-\- |\fR \fIfiles\fR \fB...\fR" 4
.IX Item "-- | files ..."
Standard input, or source files to assemble.
.PP
The following options are available when as is configured for
an \s-1ARC\s0 processor.
.IP "\fB\-marc[5|6|7|8]\fR" 4
.IX Item "-marc[5|6|7|8]"
This option selects the core processor variant.
.IP "\fB\-EB | \-EL\fR" 4
.IX Item "-EB | -EL"
Select either big-endian (\-EB) or little-endian (\-EL) output.
.PP
The following options are available when as is configured for the \s-1ARM\s0
processor family.
.IP "\fB\-mcpu=\fR\fIprocessor\fR\fB[+\fR\fIextension\fR\fB...]\fR" 4
.IX Item "-mcpu=processor[+extension...]"
Specify which \s-1ARM\s0 processor variant is the target.
.IP "\fB\-march=\fR\fIarchitecture\fR\fB[+\fR\fIextension\fR\fB...]\fR" 4
.IX Item "-march=architecture[+extension...]"
Specify which \s-1ARM\s0 architecture variant is used by the target.
.IP "\fB\-mfpu=\fR\fIfloating-point-format\fR" 4
.IX Item "-mfpu=floating-point-format"
Select which Floating Point architecture is the target.
.IP "\fB\-mfloat\-abi=\fR\fIabi\fR" 4
.IX Item "-mfloat-abi=abi"
Select which floating point \s-1ABI\s0 is in use.
.IP "\fB\-mthumb\fR" 4
.IX Item "-mthumb"
Enable Thumb only instruction decoding.
.IP "\fB\-mapcs\-32 | \-mapcs\-26 | \-mapcs\-float | \-mapcs\-reentrant\fR" 4
.IX Item "-mapcs-32 | -mapcs-26 | -mapcs-float | -mapcs-reentrant"
Select which procedure calling convention is in use.
.IP "\fB\-EB | \-EL\fR" 4
.IX Item "-EB | -EL"
Select either big-endian (\-EB) or little-endian (\-EL) output.
.IP "\fB\-mthumb\-interwork\fR" 4
.IX Item "-mthumb-interwork"
Specify that the code has been generated with interworking between Thumb and
\&\s-1ARM\s0 code in mind.
.IP "\fB\-k\fR" 4
.IX Item "-k"
Specify that \s-1PIC\s0 code has been generated.
.PP
See the info pages for documentation of the CRIS-specific options.
.PP
The following options are available when as is configured for
a D10V processor.
.IP "\fB\-O\fR" 4
.IX Item "-O"
Optimize output by parallelizing instructions.
.PP
The following options are available when as is configured for a D30V
processor.
.IP "\fB\-O\fR" 4
.IX Item "-O"
Optimize output by parallelizing instructions.
.IP "\fB\-n\fR" 4
.IX Item "-n"
Warn when nops are generated.
.IP "\fB\-N\fR" 4
.IX Item "-N"
Warn when a nop after a 32\-bit multiply instruction is generated.
.PP
The following options are available when as is configured for the
Intel 80960 processor.
.IP "\fB\-ACA | \-ACA_A | \-ACB | \-ACC | \-AKA | \-AKB | \-AKC | \-AMC\fR" 4
.IX Item "-ACA | -ACA_A | -ACB | -ACC | -AKA | -AKB | -AKC | -AMC"
Specify which variant of the 960 architecture is the target.
.IP "\fB\-b\fR" 4
.IX Item "-b"
Add code to collect statistics about branches taken.
.IP "\fB\-no\-relax\fR" 4
.IX Item "-no-relax"
Do not alter compare-and-branch instructions for long displacements;
error if necessary.
.PP
The following options are available when as is configured for the
Ubicom \s-1IP2K\s0 series.
.IP "\fB\-mip2022ext\fR" 4
.IX Item "-mip2022ext"
Specifies that the extended \s-1IP2022\s0 instructions are allowed.
.IP "\fB\-mip2022\fR" 4
.IX Item "-mip2022"
Restores the default behaviour, which restricts the permitted instructions to
just the basic \s-1IP2022\s0 ones.
.PP
The following options are available when as is configured for the
Renesas M32C and M16C processors.
.IP "\fB\-m32c\fR" 4
.IX Item "-m32c"
Assemble M32C instructions.
.IP "\fB\-m16c\fR" 4
.IX Item "-m16c"
Assemble M16C instructions (the default).
.PP
The following options are available when as is configured for the
Renesas M32R (formerly Mitsubishi M32R) series.
.IP "\fB\-\-m32rx\fR" 4
.IX Item "--m32rx"
Specify which processor in the M32R family is the target.  The default
is normally the M32R, but this option changes it to the M32RX.
.IP "\fB\-\-warn\-explicit\-parallel\-conflicts or \-\-Wp\fR" 4
.IX Item "--warn-explicit-parallel-conflicts or --Wp"
Produce warning messages when questionable parallel constructs are
encountered. 
.IP "\fB\-\-no\-warn\-explicit\-parallel\-conflicts or \-\-Wnp\fR" 4
.IX Item "--no-warn-explicit-parallel-conflicts or --Wnp"
Do not produce warning messages when questionable parallel constructs are 
encountered. 
.PP
The following options are available when as is configured for the
Motorola 68000 series.
.IP "\fB\-l\fR" 4
.IX Item "-l"
Shorten references to undefined symbols, to one word instead of two.
.IP "\fB\-m68000 | \-m68008 | \-m68010 | \-m68020 | \-m68030\fR" 4
.IX Item "-m68000 | -m68008 | -m68010 | -m68020 | -m68030"
.PD 0
.IP "\fB| \-m68040 | \-m68060 | \-m68302 | \-m68331 | \-m68332\fR" 4
.IX Item "| -m68040 | -m68060 | -m68302 | -m68331 | -m68332"
.IP "\fB| \-m68333 | \-m68340 | \-mcpu32 | \-m5200\fR" 4
.IX Item "| -m68333 | -m68340 | -mcpu32 | -m5200"
.PD
Specify what processor in the 68000 family is the target.  The default
is normally the 68020, but this can be changed at configuration time.
.IP "\fB\-m68881 | \-m68882 | \-mno\-68881 | \-mno\-68882\fR" 4
.IX Item "-m68881 | -m68882 | -mno-68881 | -mno-68882"
The target machine does (or does not) have a floating-point coprocessor.
The default is to assume a coprocessor for 68020, 68030, and cpu32.  Although
the basic 68000 is not compatible with the 68881, a combination of the
two can be specified, since it's possible to do emulation of the
coprocessor instructions with the main processor.
.IP "\fB\-m68851 | \-mno\-68851\fR" 4
.IX Item "-m68851 | -mno-68851"
The target machine does (or does not) have a memory-management
unit coprocessor.  The default is to assume an \s-1MMU\s0 for 68020 and up.
.PP
For details about the \s-1PDP\-11\s0 machine dependent features options,
see \fBPDP\-11\-Options\fR.
.IP "\fB\-mpic | \-mno\-pic\fR" 4
.IX Item "-mpic | -mno-pic"
Generate position-independent (or position\-dependent) code.  The
default is \fB\-mpic\fR.
.IP "\fB\-mall\fR" 4
.IX Item "-mall"
.PD 0
.IP "\fB\-mall\-extensions\fR" 4
.IX Item "-mall-extensions"
.PD
Enable all instruction set extensions.  This is the default.
.IP "\fB\-mno\-extensions\fR" 4
.IX Item "-mno-extensions"
Disable all instruction set extensions.
.IP "\fB\-m\fR\fIextension\fR \fB| \-mno\-\fR\fIextension\fR" 4
.IX Item "-mextension | -mno-extension"
Enable (or disable) a particular instruction set extension.
.IP "\fB\-m\fR\fIcpu\fR" 4
.IX Item "-mcpu"
Enable the instruction set extensions supported by a particular \s-1CPU\s0, and
disable all other extensions.
.IP "\fB\-m\fR\fImachine\fR" 4
.IX Item "-mmachine"
Enable the instruction set extensions supported by a particular machine
model, and disable all other extensions.
.PP
The following options are available when as is configured for
a picoJava processor.
.IP "\fB\-mb\fR" 4
.IX Item "-mb"
Generate \*(L"big endian\*(R" format output.
.IP "\fB\-ml\fR" 4
.IX Item "-ml"
Generate \*(L"little endian\*(R" format output.
.PP
The following options are available when as is configured for the
Motorola 68HC11 or 68HC12 series.
.IP "\fB\-m68hc11 | \-m68hc12 | \-m68hcs12\fR" 4
.IX Item "-m68hc11 | -m68hc12 | -m68hcs12"
Specify what processor is the target.  The default is
defined by the configuration option when building the assembler.
.IP "\fB\-mshort\fR" 4
.IX Item "-mshort"
Specify to use the 16\-bit integer \s-1ABI\s0.
.IP "\fB\-mlong\fR" 4
.IX Item "-mlong"
Specify to use the 32\-bit integer \s-1ABI\s0.  
.IP "\fB\-mshort\-double\fR" 4
.IX Item "-mshort-double"
Specify to use the 32\-bit double \s-1ABI\s0.  
.IP "\fB\-mlong\-double\fR" 4
.IX Item "-mlong-double"
Specify to use the 64\-bit double \s-1ABI\s0.  
.IP "\fB\-\-force\-long\-branches\fR" 4
.IX Item "--force-long-branches"
Relative branches are turned into absolute ones. This concerns
conditional branches, unconditional branches and branches to a
sub routine.
.IP "\fB\-S | \-\-short\-branches\fR" 4
.IX Item "-S | --short-branches"
Do not turn relative branches into absolute ones
when the offset is out of range.
.IP "\fB\-\-strict\-direct\-mode\fR" 4
.IX Item "--strict-direct-mode"
Do not turn the direct addressing mode into extended addressing mode
when the instruction does not support direct addressing mode.