84
Chapter 12. ARC Dependent Features
12.2.2. Register Names
*TODO*
12.3. Floating Point
The ARC core does not currently have hardware floating point support. Software floating point support
is provided by
GCC
and uses ieee floating point numbers.
12.4. ARC Machine Directives
The ARC version of
as
supports the following additional machine directives:
.2byte expressions
*TODO*
.3byte expressions
*TODO*
.4byte expressions
*TODO*
.extAuxRegister name,address,mode
*TODO*
.extAuxRegister mulhi,0x12,w
.extCondCode suffix,value
*TODO*
.extCondCode is_busy,0x14
.extCoreRegister name,regnum,mode,shortcut
*TODO*
.extCoreRegister mlo,57,r,can_shortcut
.extInstruction name,opcode,subopcode,suffixclass,syntaxclass
*TODO*
.extInstruction mul64,0x14,0x0,SUFFIX_COND,SYNTAX_3OP|OP1_MUST_BE_IMM
.half expressions
*TODO*
.long expressions
*TODO*






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