The ARC version of as
supports the following additional
machine directives:
.2byte
expressions
.3byte
expressions
.4byte
expressions
.extAuxRegister
name,
address,
mode
.extAuxRegister mulhi,0x12,w
.extCondCode
suffix,
value
.extCondCode is_busy,0x14
.extCoreRegister
name,
regnum,
mode,
shortcut
.extCoreRegister mlo,57,r,can_shortcut
.extInstruction
name,
opcode,
subopcode,
suffixclass,
syntaxclass
.extInstruction mul64,0x14,0x0,SUFFIX_COND,SYNTAX_3OP|OP1_MUST_BE_IMM
.half
expressions
.long
expressions
.option
arc|arc5|arc6|arc7|arc8
.option
directive must be followed by the desired core
version. Again arc
is an alias for
arc6
.
Note: the .option
directive overrides the command line option
-marc
; a warning is emitted when the version is not consistent
between the two - even for the implicit default core version
(arc6).
.short
expressions
.word
expressions