ARM dependent
features
The following documentation discusses
the features pertinent to the ARM processor regarding the GNU assembler.
as has no additional command-line
options for the ARM processor family.
as has no additional command-line
options for the ARM processor family.
; is the line comment character.
ARM
floating point
The ARM family uses IEEE floating-point
numbers.
The following assembler directives are
for the ARM processor.
.code [ 16 | 32 ]
This directive selects the instruction
set being generated.
The value 16 selects Thumb, with the
value 32 selecting ARM.
.thumb
This performs the same action as .code 16 .
.arm
This performs the same action as .code 32 .
as implements all the standard
ARM opcodes.
For information on the ARM or Thumb instruction
sets, see ARM Software Development Toolkit Reference Manual,
Advanced RISC Machines, Ltd.
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