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Here is a brief summary of how to invoke as
. For details,
see section Comand-Line Options.
as [-a[cdhlns][=file]] [-D] [--defsym sym=val] [-f] [--gstabs] [--gdwarf2] [--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] [--statistics] [-v] [-version] [--version] [-W] [--warn] [--fatal-warnings] [-w] [-x] [-Z] [--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-fromat] [-mthumb] [-EB|-EL] [-mapcs-32|-mapcs-26|-mapcs-float| -mapcs-reentrant] [-mthumb-interwork] [-moabi] [-k] Target CRIS options: [--underscore | --no-underscore] [--pic] [-N] [--emulation=criself | --emulation=crisaout] Target D10V options: [-O] Target D30V options: [-O|-n|-N] Target i386 options: [--32|--64] Target i960 options: [-ACA|-ACA_A|-ACB|-ACC|-AKA|-AKB| -AKC|-AMC] [-b] [-no-relax] Target M32R options: [--m32rx|--[no-]warn-explicit-parallel-conflicts| --W[n]p] Target M680X0 options: [-l] [-m68000|-m68010|-m68020|...] Target M68HC11 options: [-m68hc11|-m68hc12] [--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] [-n] [-O[optimization level]] [-g[debug level]] [-G num] [-KPIC] [-call_shared] [-non_shared] [-xgot] [--membedded-pic] [-mabi=ABI] [-32] [-n32] [-64] [-mfp32] [-mgp32] [-march=CPU] [-mtune=CPU] [-mips1] [-mips2] [-mips3] [-mips4] [-mips5] [-mips32] [-mips64] [-construct-floats] [-no-construct-floats] [-trap] [-no-break] [-break] [-no-trap] [-mfix7000] [-mno-fix7000] [-mips16] [-no-mips16] [-mips3d] [-no-mips3d] [-mdmx] [-no-mdmx] [-mdebug] [-no-mdebug] 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] |
-a[cdhlmns]
-ac
-ad
-ah
-al
-am
-an
-as
=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'.
-D
--defsym sym=value
-f
--gstabs
--gdwarf2
--help
--target-help
-I dir
.include
directives.
-J
-K
-L
--keep-locals
--listing-lhs-width=number
--listing-lhs-width2=number
--listing-rhs-width=number
--listing-cont-lines=number
-o objfile
as
objfile.
-R
--statistics
--strip-local-absolute
-v
-version
as
version.
--version
as
version and exit.
-W
--no-warn
--fatal-warnings
--warn
-w
-x
-Z
-- | files ...
The following options are available when as is configured for an ARC processor.
-marc[5|6|7|8]
-EB | -EL
The following options are available when as is configured for the ARM processor family.
-mcpu=processor[+extension...]
-march=architecture[+extension...]
-mfpu=floating-point-format
-mthumb
-mapcs-32 | -mapcs-26 | -mapcs-float | -mapcs-reentrant | -moabi
-EB | -EL
-mthumb-interwork
-k
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
The following options are available when as is configured for a D30V processor.
-O
-n
-N
The following options are available when as is configured for the Intel 80960 processor.
-ACA | -ACA_A | -ACB | -ACC | -AKA | -AKB | -AKC | -AMC
-b
-no-relax
The following options are available when as is configured for the Mitsubishi M32R series.
--m32rx
--warn-explicit-parallel-conflicts or --Wp
--no-warn-explicit-parallel-conflicts or --Wnp
The following options are available when as is configured for the Motorola 68000 series.
-l
-m68000 | -m68008 | -m68010 | -m68020 | -m68030
| -m68040 | -m68060 | -m68302 | -m68331 | -m68332
| -m68333 | -m68340 | -mcpu32 | -m5200
-m68881 | -m68882 | -mno-68881 | -mno-68882
-m68851 | -mno-68851
For details about the PDP-11 machine dependent features options, see 8.21.1 Options.
-mpic | -mno-pic
-mall
-mall-extensions
-mno-extensions
-mextension | -mno-extension
-mcpu
-mmachine
The following options are available when as is configured for a picoJava processor.
The following options are available when as is configured for the Motorola 68HC11 or 68HC12 series.
-m68hc11 | -m68hc12
--force-long-branchs
-S | --short-branchs
--strict-direct-mode
--print-insn-syntax
--print-opcodes
--generate-example
as
.
The following options are available when as
is configured
for the SPARC architecture:
-Av6 | -Av7 | -Av8 | -Asparclet | -Asparclite
-Av8plus | -Av8plusa | -Av9 | -Av9a
`-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 UltraSPARC extensions.
-xarch=v8plus | -xarch=v8plusa
-bump
The following options are available when as is configured for a MIPS processor.
-G num
gp
register. It is only accepted for targets that
use ECOFF format, such as a DECstation running Ultrix. The default value is 8.
-EB
-EL
-mips1
-mips2
-mips3
-mips4
-mips5
-mips32
-mips64
-march=CPU
-mtune=cpu
-mfix7000
-mno-fix7000
-mdebug
-no-mdebug
-mgp32
-mfp32
-mips16
-no-mips16
.set mips16
at the start of the assembly file. `-no-mips16'
turns off this option.
-mips3d
-no-mips3d
-mdmx
-no-mdmx
--construct-floats
--no-construct-floats
--emulation=name
as
to emulate as
configured
for some other target, in all respects, including output format (choosing
between ELF and ECOFF only), handling of pseudo-opcodes which may generate
debugging information or store symbol table information, and default
endianness. The available configuration names are: `mipsecoff',
`mipself', `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 default 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
-n
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
-sifilter
-nosifilter
-relax
-mcpu=[210|340]
-EB
-EL
See the info pages for documentation of the MMIX-specific options.
1.1 Structure of this Manual | ||
1.2 The GNU Assembler | ||
1.3 Object File Formats | ||
1.4 Command Line | ||
1.5 Input Files | ||
1.6 Output (Object) File | ||
1.7 Error and Warning Messages |
[ < ] | [ > ] | [ << ] | [ Up ] | [ >> ] | [Top] | [Contents] | [Index] | [ ? ] |