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AS(1)			     GNU Development Tools			 AS(1)

NAME
       AS - the	portable GNU assembler.

SYNOPSIS
       as [-a[cdhlns][=file]] [--alternate] [-D]
	[--defsym sym=val] [-f]	[-g] [--gstabs]
	[--gstabs+] [--gdwarf-2] [--help] [-I dir] [-J]
	[-K] [-L] [--listing-lhs-width=NUM]
	[--listing-lhs-width2=NUM] [--listing-rhs-width=NUM]
	[--listing-cont-lines=NUM] [--keep-locals] [-o
	objfile] [-R] [--reduce-memory-overheads] [--statistics]
	[-v] [-version]	[--version] [-W] [--warn]
	[--fatal-warnings] [-w]	[-x] [-Z] [@FILE]
	[--target-help]	[target-options]
	[--|files ...]

       Target Alpha options:
	  [-mcpu]
	  [-mdebug | -no-mdebug]
	  [-relax] [-g]	[-Gsize]
	  [-F] [-32addr]

       Target ARC options:
	  [-marc[5|6|7|8]]
	  [-EB|-EL]

       Target ARM options:
	  [-mcpu=processor[+extension...]]
	  [-march=architecture[+extension...]]
	  [-mfpu=floating-point-format]
	  [-mfloat-abi=abi]
	  [-meabi=ver]
	  [-mthumb]
	  [-EB|-EL]
	  [-mapcs-32|-mapcs-26|-mapcs-float|
	   -mapcs-reentrant]
	  [-mthumb-interwork] [-k]

       Target CRIS options:
	  [--underscore	| --no-underscore]
	  [--pic] [-N]
	  [--emulation=criself | --emulation=crisaout]
	  [--march=v0_v10   |	--march=v10   |	  --march=v32  |  --march=com-
       mon_v10_v32]

       Target D10V options:
	  [-O]

       Target D30V options:
	  [-O|-n|-N]

       Target i386 options:
	  [--32|--64] [-n]

       Target i960 options:
	  [-ACA|-ACA_A|-ACB|-ACC|-AKA|-AKB|
	   -AKC|-AMC]
	  [-b] [-no-relax]

       Target IA-64 options:
	  [-mconstant-gp|-mauto-pic]
	  [-milp32|-milp64|-mlp64|-mp64]
	  [-mle|mbe]
	  [-mtune=itanium1|-mtune=itanium2]
	  [-munwind-check=warning|-munwind-check=error]
	  [-mhint.b=ok|-mhint.b=warning|-mhint.b=error]
	  [-x|-xexplicit] [-xauto] [-xdebug]

       Target IP2K options:
	  [-mip2022|-mip2022ext]

       Target M32C options:
	  [-m32c|-m16c]

       Target M32R options:
	  [--m32rx|--[no-]warn-explicit-parallel-conflicts|
	  --W[n]p]

       Target M680X0 options:
	  [-l] [-m68000|-m68010|-m68020|...]

       Target M68HC11 options:
	  [-m68hc11|-m68hc12|-m68hcs12]
	  [-mshort|-mlong]
	  [-mshort-double|-mlong-double]
	  [--force-long-branchs] [--short-branchs]
	  [--strict-direct-mode] [--print-insn-syntax]
	  [--print-opcodes] [--generate-example]

       Target MCORE options:
	  [-jsri2bsr] [-sifilter] [-relax]
	  [-mcpu=[210|340]]

       Target MIPS options:
	  [-nocpp] [-EL] [-EB] [-O[optimization	level]]
	  [-g[debug level]] [-G	num] [-KPIC] [-call_shared]
	  [-non_shared]	[-xgot]
	  [-mabi=ABI] [-32] [-n32] [-64] [-mfp32] [-mgp32]
	  [-march=CPU] [-mtune=CPU] [-mips1] [-mips2]
	  [-mips3] [-mips4] [-mips5] [-mips32] [-mips32r2]
	  [-mips64] [-mips64r2]
	  [-construct-floats] [-no-construct-floats]
	  [-trap] [-no-break] [-break] [-no-trap]
	  [-mfix7000] [-mno-fix7000]
	  [-mips16] [-no-mips16]
	  [-mips3d] [-no-mips3d]
	  [-mdmx] [-no-mdmx]
	  [-mdsp] [-mno-dsp]
	  [-mmt] [-mno-mt]
	  [-mdebug] [-no-mdebug]
	  [-mpdr] [-mno-pdr]

       Target MMIX options:
	  [--fixed-special-register-names] [--globalize-symbols]
	  [--gnu-syntax] [--relax] [--no-predefined-symbols]
	  [--no-expand]	[--no-merge-gregs] [-x]
	  [--linker-allocated-gregs]

       Target PDP11 options:
	  [-mpic|-mno-pic] [-mall] [-mno-extensions]
	  [-mextension|-mno-extension]
	  [-mcpu] [-mmachine]

       Target picoJava options:
	  [-mb|-me]

       Target PowerPC options:
	  [-mpwrx|-mpwr2|-mpwr|-m601|-mppc|-mppc32|-m603|-m604|
	   -m403|-m405|-mppc64|-m620|-mppc64bridge|-mbooke|
	   -mbooke32|-mbooke64]
	  [-mcom|-many|-maltivec] [-memb]
	  [-mregnames|-mno-regnames]
	  [-mrelocatable|-mrelocatable-lib]
	  [-mlittle|-mlittle-endian|-mbig|-mbig-endian]
	  [-msolaris|-mno-solaris]

       Target SPARC options:
	  [-Av6|-Av7|-Av8|-Asparclet|-Asparclite
	   -Av8plus|-Av8plusa|-Av9|-Av9a]
	  [-xarch=v8plus|-xarch=v8plusa] [-bump]
	  [-32|-64]

       Target TIC54X options:
	[-mcpu=54[123589]|-mcpu=54[56]lp] [-mfar-mode|-mf]
	[-merrors-to-file _filename_|-me _filename_]

       Target Z80 options:
	 [-z80]	[-r800]
	 [ -ignore-undocumented-instructions] [-Wnud]
	 [ -ignore-unportable-instructions] [-Wnup]
	 [ -warn-undocumented-instructions] [-Wud]
	 [ -warn-unportable-instructions] [-Wup]
	 [ -forbid-undocumented-instructions] [-Fud]
	 [ -forbid-unportable-instructions] [-Fup]

       Target Xtensa options:
	[--[no-]text-section-literals] [--[no-]absolute-literals]
	[--[no-]target-align] [--[no-]longcalls]
	[--[no-]transform]
	[--rename-section oldname=newname]

DESCRIPTION
       GNU as is really	a family of assemblers.	 If you	use (or	have used) the
       GNU assembler on	one architecture, you should find a fairly similar en-
       vironment when you use it on another architecture.   Each  version  has
       much in common with the others, including object	file formats, most as-
       sembler directives (often called	pseudo-ops) and	assembler syntax.

       as is primarily intended	to assemble the	output of the GNU  C  compiler
       "gcc" for use by	the linker "ld".  Nevertheless,	we've tried to make as
       assemble	correctly everything that other	assemblers for	the  same  ma-
       chine  would assemble.  Any exceptions are documented explicitly.  This
       doesn't mean as always uses the same syntax as  another	assembler  for
       the  same  architecture;	 for  example, we know of several incompatible
       versions	of 680x0 assembly language syntax.

       Each time you run as it assembles  exactly  one	source	program.   The
       source program is made up of one	or more	files.	(The standard input is
       also a file.)

       You give	as a command line that has zero	or more	input file names.  The
       input  files  are  read (from left file name to right).	A command line
       argument	(in any	position) that has no special meaning is taken	to  be
       an input	file name.

       If  you	give  as no file names it attempts to read one input file from
       the as standard input, which is normally	your terminal.	You  may  have
       to type ctl-D to	tell as	there is no more program to assemble.

       Use  --	if you need to explicitly name the standard input file in your
       command line.

       If the source is	empty, as produces a small, empty object file.

       as may write warnings and error messages	to  the	 standard  error  file
       (usually	 your terminal).  This should not happen when  a compiler runs
       as automatically.  Warnings report an assumption	made so	that as	 could
       keep  assembling	 a  flawed program; errors report a grave problem that
       stops the assembly.

       If you are invoking as via the GNU C compiler, you can use the -Wa  op-
       tion  to	 pass arguments	through	to the assembler.  The assembler argu-
       ments must be separated from each other (and the	-Wa) by	 commas.   For
       example:

	       gcc -c -g -O -Wa,-alh,-L	file.c

       This passes two options to the assembler: -alh (emit a listing to stan-
       dard output with	high-level and assembly	source)	and -L	(retain	 local
       symbols in the symbol table).

       Usually	you do not need	to use this -Wa	mechanism, since many compiler
       command-line options are	automatically passed to	the assembler  by  the
       compiler.   (You	can call the GNU compiler driver with the -v option to
       see precisely what options it passes to each compilation	pass,  includ-
       ing the assembler.)

OPTIONS
       @file
	   Read	command-line options from file.	 The options read are inserted
	   in place of the original @file option.  If file does	not exist,  or
	   cannot  be read, then the option will be treated literally, and not
	   removed.

	   Options in file are separated by whitespace.	 A whitespace  charac-
	   ter	may  be	included in an option by surrounding the entire	option
	   in either single or double  quotes.	 Any  character	 (including  a
	   backslash)  may  be	included  by prefixing the character to	be in-
	   cluded with a backslash.  The file may  itself  contain  additional
	   @file options; any such options will	be processed recursively.

       -a[cdhlmns]
	   Turn	on listings, in	any of a variety of ways:

	   -ac omit false conditionals

	   -ad omit debugging directives

	   -ah include high-level source

	   -al include assembly

	   -am include macro expansions

	   -an omit forms processing

	   -as include symbols

	   =file
	       set the name of the listing file

	   You	may  combine these options; for	example, use -aln for assembly
	   listing without forms processing.  The =file	option,	if used,  must
	   be the last one.  By	itself,	-a defaults to -ahls.

       --alternate
	   Begin in alternate macro mode, see Altmacro,,".altmacro".

       -D  Ignored.   This  option  is	accepted for script compatibility with
	   calls to other assemblers.

       --defsym	sym=value
	   Define the symbol sym to be value before assembling the input file.
	   value must be an integer constant.  As in C,	a leading 0x indicates
	   a hexadecimal value,	and a leading 0	indicates an octal value.

       -f  "fast"---skip whitespace and	comment	preprocessing  (assume	source
	   is compiler output).

       -g
       --gen-debug
	   Generate debugging information for each assembler source line using
	   whichever debug format is preferred by the target.  This  currently
	   means either	STABS, ECOFF or	DWARF2.

       --gstabs
	   Generate stabs debugging information	for each assembler line.  This
	   may help debugging assembler	code, if the debugger can handle it.

       --gstabs+
	   Generate stabs debugging information	for each assembler line,  with
	   GNU	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 GNU	exten-
	   sion	is the location	of the current working directory at assembling
	   time.

       --gdwarf-2
	   Generate  DWARF2  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.

       --help
	   Print a summary of the command line options and exit.

       --target-help
	   Print a summary of all target specific options and exit.

       -I dir
	   Add directory dir to	the search list	for ".include" directives.

       -J  Don't warn about signed overflow.

       -K  Issue warnings when difference tables altered  for  long  displace-
	   ments.

       -L
       --keep-locals
	   Keep	 (in  the  symbol  table) local	symbols.  On traditional a.out
	   systems these start with L, but different  systems  have  different
	   local label prefixes.

       --listing-lhs-width=number
	   Set	the  maximum width, in words, of the output data column	for an
	   assembler listing to	number.

       --listing-lhs-width2=number
	   Set the maximum width, in words, of the output data column for con-
	   tinuation lines in an assembler listing to number.

       --listing-rhs-width=number
	   Set	the  maximum  width of an input	source line, as	displayed in a
	   listing, to number bytes.

       --listing-cont-lines=number
	   Set the maximum number of lines printed in a	listing	for  a	single
	   line	of input to number + 1.

       -o objfile
	   Name	the object-file	output from as objfile.

       -R  Fold	the data section into the text section.

	   Set	the  default size of GAS's hash	tables to a prime number close
	   to number.  Increasing this value can reduce	the length of time  it
	   takes  the  assembler  to  perform its tasks, at the	expense	of in-
	   creasing the	assembler's memory requirements.   Similarly  reducing
	   this	 value	can  reduce  the memory	requirements at	the expense of
	   speed.

       --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 --hash-size=4051, but in	the future it may  have	 other
	   effects as well.

       --statistics
	   Print the maximum space (in bytes) and total	time (in seconds) used
	   by assembly.

       --strip-local-absolute
	   Remove local	absolute symbols from the outgoing symbol table.

       -v
       -version
	   Print the as	version.

       --version
	   Print the as	version	and exit.

       -W
       --no-warn
	   Suppress warning messages.

       --fatal-warnings
	   Treat warnings as errors.

       --warn
	   Don't suppress warning messages or treat them as errors.

       -w  Ignored.

       -x  Ignored.

       -Z  Generate an object file even	after errors.

       -- | files ...
	   Standard input, or source files to assemble.

       The following options are available when	as is configured  for  an  ARC
       processor.

       -marc[5|6|7|8]
	   This	option selects the core	processor variant.

       -EB | -EL
	   Select either big-endian (-EB) or little-endian (-EL) output.

       The  following  options are available when as is	configured for the ARM
       processor family.

       -mcpu=processor[+extension...]
	   Specify which ARM processor variant is the target.

       -march=architecture[+extension...]
	   Specify which ARM architecture variant is used by the target.

       -mfpu=floating-point-format
	   Select which	Floating Point architecture is the target.

       -mfloat-abi=abi
	   Select which	floating point ABI is in use.

       -mthumb
	   Enable Thumb	only instruction decoding.

       -mapcs-32 | -mapcs-26 | -mapcs-float | -mapcs-reentrant
	   Select which	procedure calling convention is	in use.

       -EB | -EL
	   Select either big-endian (-EB) or little-endian (-EL) output.

       -mthumb-interwork
	   Specify that	the code has been generated with interworking  between
	   Thumb and ARM code in mind.

       -k  Specify that	PIC code has been generated.

       See the info pages for documentation of the CRIS-specific options.

       The  following  options	are available when as is configured for	a D10V
       processor.

       -O  Optimize output by parallelizing instructions.

       The following options are available when	as is configured  for  a  D30V
       processor.

       -O  Optimize output by parallelizing instructions.

       -n  Warn	when nops are generated.

       -N  Warn	when a nop after a 32-bit multiply instruction is generated.

       The following options are available when	as is configured for the Intel
       80960 processor.

       -ACA | -ACA_A | -ACB | -ACC | -AKA | -AKB | -AKC	| -AMC
	   Specify which variant of the	960 architecture is the	target.

       -b  Add code to collect statistics about	branches taken.

       -no-relax
	   Do not alter	compare-and-branch  instructions  for  long  displace-
	   ments; error	if necessary.

       The  following options are available when as is configured for the Ubi-
       com IP2K	series.

       -mip2022ext
	   Specifies that the extended IP2022 instructions are allowed.

       -mip2022
	   Restores the	default	behaviour, which restricts the	permitted  in-
	   structions to just the basic	IP2022 ones.

       The following options are available when	as is configured for the Rene-
       sas M32C	and M16C processors.

       -m32c
	   Assemble M32C instructions.

       -m16c
	   Assemble M16C instructions (the default).

       The following options are available when	as is configured for the Rene-
       sas M32R	(formerly Mitsubishi M32R) series.

       --m32rx
	   Specify  which processor in the M32R	family is the target.  The de-
	   fault is normally the M32R, but  this  option  changes  it  to  the
	   M32RX.

       --warn-explicit-parallel-conflicts or --Wp
	   Produce  warning messages when questionable parallel	constructs are
	   encountered.

       --no-warn-explicit-parallel-conflicts or	--Wnp
	   Do not produce warning messages  when  questionable	parallel  con-
	   structs are encountered.

       The  following  options are available when as is	configured for the Mo-
       torola 68000 series.

       -l  Shorten references to undefined symbols, to	one  word  instead  of
	   two.

       -m68000 | -m68008 | -m68010 | -m68020 | -m68030
       | -m68040 | -m68060 | -m68302 | -m68331 | -m68332
       | -m68333 | -m68340 | -mcpu32 | -m5200
	   Specify  what processor in the 68000	family is the target.  The de-
	   fault is normally the 68020,	but this can be	changed	at  configura-
	   tion	time.

       -m68881 | -m68882 | -mno-68881 |	-mno-68882
	   The	target machine does (or	does not) have a floating-point	copro-
	   cessor.  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	possi-
	   ble	to  do emulation of the	coprocessor instructions with the main
	   processor.

       -m68851 | -mno-68851
	   The target machine does (or does not) have a	memory-management unit
	   coprocessor.	 The default is	to assume an MMU for 68020 and up.

       For  details  about  the	PDP-11 machine dependent features options, see
       PDP-11-Options.

       -mpic | -mno-pic
	   Generate position-independent (or  position-dependent)  code.   The
	   default is -mpic.

       -mall
       -mall-extensions
	   Enable all instruction set extensions.  This	is the default.

       -mno-extensions
	   Disable all instruction set extensions.

       -mextension | -mno-extension
	   Enable (or disable) a particular instruction	set extension.

       -mcpu
	   Enable  the	instruction  set  extensions supported by a particular
	   CPU,	and disable all	other extensions.

       -mmachine
	   Enable the instruction set extensions supported by a	particular ma-
	   chine model,	and disable all	other extensions.

       The  following  options are available when as is	configured for a pico-
       Java processor.

       -mb Generate "big endian" format	output.

       -ml Generate "little endian" format output.

       The following options are available when	as is configured for  the  Mo-
       torola 68HC11 or	68HC12 series.

       -m68hc11	| -m68hc12 | -m68hcs12
	   Specify  what  processor  is	the target.  The default is defined by
	   the configuration option when building the assembler.

       -mshort
	   Specify to use the 16-bit integer ABI.

       -mlong
	   Specify to use the 32-bit integer ABI.

       -mshort-double
	   Specify to use the 32-bit double ABI.

       -mlong-double
	   Specify to use the 64-bit double ABI.

       --force-long-branchs
	   Relative branches are turned	into absolute ones. This concerns con-
	   ditional  branches,	unconditional  branches	 and branches to a sub
	   routine.

       -S | --short-branchs
	   Do not turn relative	branchs	into absolute ones when	the offset  is
	   out of range.

       --strict-direct-mode
	   Do  not  turn  the  direct addressing mode into extended addressing
	   mode	when the instruction does not support direct addressing	mode.

       --print-insn-syntax
	   Print the syntax of instruction in case of error.

       --print-opcodes
	   print the list of instructions with syntax and then exit.

       --generate-example
	   print an example of instruction for each possible  instruction  and
	   then	exit.  This option is only useful for testing as.

       The following options are available when	as is configured for the SPARC
       architecture:

       -Av6 | -Av7 | -Av8 | -Asparclet | -Asparclite
       -Av8plus	| -Av8plusa | -Av9 | -Av9a
	   Explicitly select a variant of the SPARC architecture.

	   -Av8plus and	-Av8plusa select a 32 bit environment.	-Av9 and -Av9a
	   select a 64 bit environment.

	   -Av8plusa and -Av9a enable the SPARC	V9 instruction set with	Ultra-
	   SPARC extensions.

       -xarch=v8plus | -xarch=v8plusa
	   For compatibility with the Solaris v9 assembler.  These options are
	   equivalent to -Av8plus and -Av8plusa, respectively.

       -bump
	   Warn	when the assembler switches to another architecture.

       The following options are available when	as is configured for the 'c54x
       architecture.

       -mfar-mode
	   Enable extended addressing mode.   All  addresses  and  relocations
	   will	assume extended	addressing (usually 23 bits).

       -mcpu=CPU_VERSION
	   Sets	the CPU	version	being compiled for.

       -merrors-to-file	FILENAME
	   Redirect  error  output  to	a file,	for broken systems which don't
	   support such	behaviour in the shell.

       The following options are available when	as is configured  for  a  MIPS
       processor.

       -G num
	   This	 option	 sets the largest size of an object that can be	refer-
	   enced implicitly with the "gp" register.  It	is only	 accepted  for
	   targets that	use ECOFF format, such as a DECstation running Ultrix.
	   The default value is	8.

       -EB Generate "big endian" format	output.

       -EL Generate "little endian" format output.

       -mips1
       -mips2
       -mips3
       -mips4
       -mips5
       -mips32
       -mips32r2
       -mips64
       -mips64r2
	   Generate code for a particular MIPS	Instruction  Set  Architecture
	   level.  -mips1 is an	alias for -march=r3000,	-mips2 is an alias for
	   -march=r6000, -mips3	is an alias for	-march=r4000 and -mips4	is  an
	   alias  for  -march=r8000.  -mips5, -mips32, -mips32r2, -mips64, and
	   -mips64r2 correspond	to generic MIPS	V, MIPS32, MIPS32  Release  2,
	   MIPS64, and MIPS64 Release 2	ISA processors,	respectively.

       -march=CPU
	   Generate code for a particular MIPS cpu.

       -mtune=cpu
	   Schedule and	tune for a particular MIPS cpu.

       -mfix7000
       -mno-fix7000
	   Cause  nops	to be inserted if the read of the destination register
	   of an mfhi or mflo instruction occurs in the	following two instruc-
	   tions.

       -mdebug
       -no-mdebug
	   Cause  stabs-style debugging	output to go into an ECOFF-style .mde-
	   bug section instead of the standard ELF .stabs sections.

       -mpdr
       -mno-pdr
	   Control generation of ".pdr"	sections.

       -mgp32
       -mfp32
	   The register	sizes are normally inferred from the ISA and ABI,  but
	   these  flags	force a	certain	group of registers to be treated as 32
	   bits	wide at	all times.  -mgp32 controls the	size  of  general-pur-
	   pose	 registers and -mfp32 controls the size	of floating-point reg-
	   isters.

       -mips16
       -no-mips16
	   Generate code for the MIPS 16 processor.   This  is	equivalent  to
	   putting   ".set   mips16"  at  the  start  of  the  assembly	 file.
	   -no-mips16 turns off	this option.

       -mips3d
       -no-mips3d
	   Generate code for the MIPS-3D Application Specific Extension.  This
	   tells  the  assembler  to  accept MIPS-3D instructions.  -no-mips3d
	   turns off this option.

       -mdmx
       -no-mdmx
	   Generate code for the MDMX Application  Specific  Extension.	  This
	   tells  the  assembler  to accept MDMX instructions.	-no-mdmx turns
	   off this option.

       -mdsp
       -mno-dsp
	   Generate code for the DSP  Application  Specific  Extension.	  This
	   tells the assembler to accept DSP instructions.  -mno-dsp turns off
	   this	option.

       -mmt
       -mno-mt
	   Generate code for the  MT  Application  Specific  Extension.	  This
	   tells  the  assembler to accept MT instructions.  -mno-mt turns off
	   this	option.

       --construct-floats
       --no-construct-floats
	   The --no-construct-floats option disables the construction of  dou-
	   ble width floating point constants by loading the two halves	of the
	   value into the two single width floating point registers that  make
	   up the double width register.  By default --construct-floats	is se-
	   lected, allowing construction of these floating point constants.

       --emulation=name
	   This	option causes as to emulate as configured for some other  tar-
	   get,	in all respects, including output format (choosing between ELF
	   and ECOFF only), handling of	pseudo-opcodes which may generate  de-
	   bugging  information	or store symbol	table information, and default
	   endianness.	The available configuration names are: mipsecoff, mip-
	   self, mipslecoff, mipsbecoff, mipslelf, mipsbelf.  The first	two do
	   not alter the default endianness from that of  the  primary	target
	   for	which  the assembler was configured; the others	change the de-
	   fault to little- or big-endian as indicated by the b	or  l  in  the
	   name.   Using  -EB or -EL will override the endianness selection in
	   any case.

	   This	option is currently supported only when	the primary target  as
	   is  configured for is a MIPS	ELF or ECOFF target.  Furthermore, the
	   primary target or others  specified	with  --enable-targets=...  at
	   configuration  time	must  include support for the other format, if
	   both	are to be available.  For example, the	Irix  5	 configuration
	   includes support for	both.

	   Eventually, this option will	support	more configurations, with more
	   fine-grained	control	over the assembler's  behavior,	 and  will  be
	   supported for more processors.

       -nocpp
	   as  ignores this option.  It	is accepted for	compatibility with the
	   native tools.

       --trap
       --no-trap
       --break
       --no-break
	   Control how to deal with multiplication overflow  and  division  by
	   zero.  --trap or --no-break (which are synonyms) take a trap	excep-
	   tion	(and only work for Instruction Set Architecture	 level	2  and
	   higher); --break or --no-trap (also synonyms, and the default) take
	   a break exception.

       -n  When	this option is used, as	will issue a  warning  every  time  it
	   generates a nop instruction from a macro.

       The  following options are available when as is configured for an MCore
       processor.

       -jsri2bsr
       -nojsri2bsr
	   Enable or disable the JSRI to BSR transformation.  By default  this
	   is  enabled.	  The  command	line option -nojsri2bsr	can be used to
	   disable it.

       -sifilter
       -nosifilter
	   Enable or disable the silicon filter	behaviour.  By default this is
	   disabled.   The  default can	be overridden by the -sifilter command
	   line	option.

       -relax
	   Alter jump instructions for long displacements.

       -mcpu=[210|340]
	   Select the cpu type on the target hardware.	 This  controls	 which
	   instructions	can be assembled.

       -EB Assemble for	a big endian target.

       -EL Assemble for	a little endian	target.

       See the info pages for documentation of the MMIX-specific options.

       The following options are available when	as is configured for an	Xtensa
       processor.

       --text-section-literals | --no-text-section-literals
	   With	--text-section-literals, literal pools are interspersed	in the
	   text	 section.   The	 default  is --no-text-section-literals, which
	   places literals in a	separate section in the	 output	 file.	 These
	   options  only affect	literals referenced via	PC-relative "L32R" in-
	   structions; literals	for absolute mode "L32R" instructions are han-
	   dled	separately.

       --absolute-literals | --no-absolute-literals
	   Indicate  to	the assembler whether "L32R" instructions use absolute
	   or PC-relative addressing.  The default is to assume	 absolute  ad-
	   dressing  if	 the Xtensa processor includes the absolute "L32R" ad-
	   dressing option.  Otherwise,	only the PC-relative "L32R"  mode  can
	   be used.

       --target-align |	--no-target-align
	   Enable or disable automatic alignment to reduce branch penalties at
	   the expense of some code density.  The default is --target-align.

       --longcalls | --no-longcalls
	   Enable or disable transformation  of	 call  instructions  to	 allow
	   calls  across  a  greater  range  of	 addresses.   The  default  is
	   --no-longcalls.

       --transform | --no-transform
	   Enable or disable all assembler transformations of Xtensa  instruc-
	   tions.   The	 default is --transform; --no-transform	should be used
	   only	in the rare cases when the instructions	 must  be  exactly  as
	   specified in	the assembly source.

       The  following  options	are  available when as is configured for a Z80
       family processor.

       -z80
	   Assemble for	Z80 processor.

       -r800
	   Assemble for	R800 processor.

       -ignore-undocumented-instructions
       -Wnud
	   Assemble undocumented Z80 instructions that also work on R800 with-
	   out warning.

       -ignore-unportable-instructions
       -Wnup
	   Assemble all	undocumented Z80 instructions without warning.

       -warn-undocumented-instructions
       -Wud
	   Issue a warning for undocumented Z80	instructions that also work on
	   R800.

       -warn-unportable-instructions
       -Wup
	   Issue a warning for undocumented Z80	instructions that  do  notwork
	   on R800.

       -forbid-undocumented-instructions
       -Fud
	   Treat all undocumented instructions as errors.

       -forbid-unportable-instructions
       -Fup
	   Treat  undocumented	Z80 intructions	that do	notwork	on R800	as er-
	   rors.

SEE ALSO
       gcc(1), ld(1), and the Info entries for binutils	and ld.

COPYRIGHT
       Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99,  2000,  2001,  2002
       Free Software Foundation, Inc.

       Permission  is  granted to copy,	distribute and/or modify this document
       under the terms of the GNU Free Documentation License, Version  1.1  or
       any  later  version  published by the Free Software Foundation; with no
       Invariant Sections, with	no Front-Cover Texts, and with	no  Back-Cover
       Texts.	A copy of the license is included in the section entitled "GNU
       Free Documentation License".

binutils-2.17			  2006-06-23				 AS(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | SEE ALSO | COPYRIGHT

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