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-mcpu=processor[+extension...]
arm1
,
arm2
,
arm250
,
arm3
,
arm6
,
arm60
,
arm600
,
arm610
,
arm620
,
arm7
,
arm7m
,
arm7d
,
arm7dm
,
arm7di
,
arm7dmi
,
arm70
,
arm700
,
arm700i
,
arm710
,
arm710t
,
arm720
,
arm720t
,
arm740t
,
arm710c
,
arm7100
,
arm7500
,
arm7500fe
,
arm7t
,
arm7tdmi
,
arm8
,
arm810
,
strongarm
,
strongarm1
,
strongarm110
,
strongarm1100
,
strongarm1110
,
arm9
,
arm920
,
arm920t
,
arm922t
,
arm940t
,
arm9tdmi
,
arm9e
,
arm946e-r0
,
arm946e
,
arm966e-r0
,
arm966e
,
arm10t
,
arm10e
,
arm1020
,
arm1020t
,
arm1020e
,
ep9312
(ARM920 with Cirrus Maverick coprocessor),
i80200
(Intel XScale processor)
and
xscale
.
The special name all
may be used to allow the
assembler to accept instructions valid for any ARM processor.
In addition to the basic instruction set, the assembler can be told to
accept various extension mnemonics that extend the processor using the
co-processor instruction space. For example, -mcpu=arm920+maverick
is equivalent to specifying -mcpu=ep9312
. The following extensions
are currently supported:
+maverick
and
+xscale
.
-march=architecture[+extension...]
armv1
,
armv2
,
armv2a
,
armv2s
,
armv3
,
armv3m
,
armv4
,
armv4xm
,
armv4t
,
armv4txm
,
armv5
,
armv5t
,
armv5txm
,
armv5te
,
armv5texp
and
xscale
.
If both -mcpu
and
-march
are specified, the assembler will use
the setting for -mcpu
.
The architecture option can be extended with the same instruction set
extension options as the -mcpu
option.
-mfpu=floating-point-format
This option specifies the floating point format to assemble for. The
assembler will issue an error message if an attempt is made to assemble
an instruction which will not execute on the target floating point unit.
The following format options are recognized:
softfpa
,
fpe
,
fpe2
,
fpe3
,
fpa
,
fpa10
,
fpa11
,
arm7500fe
,
softvfp
,
softvfp+vfp
,
vfp
,
vfp10
,
vfp10-r0
,
vfp9
,
vfpxd
,
arm1020t
and
arm1020e
.
In addition to determining which instructions are assembled, this option
also affects the way in which the .double
assembler directive behaves
when assembling little-endian code.
The default is dependent on the processor selected. For Architecture 5 or later, the default is to assembler for VFP instructions; for earlier architectures the default is to assemble for FPA instructions.
-mthumb
.code 16
directive.
-mthumb-interwork
-mapcs [26|32]
-matpcs
-mapcs-float
-mapcs-reentrant
-EB
-EL
-k
-moabi
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