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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*