Chapter 8. Assembler Directives

67

8.94.1. COFF Version

For COFF targets, this directive is permitted only within

.def

/

.endef

pairs. It is used like this:

.type int

This records the integer

int

as the type attribute of a symbol table entry.

.type

is associated only with COFF format output; when

as

is configured for

b.out

output, it

accepts this directive but ignores it.

8.94.2. ELF Version

For ELF targets, the

.type

directive is used like this:

.type name , type description

This sets the type of symbol

name

to be either a function symbol or an object symbol. There are five

different syntaxes supported for the

type description

field, in order to provide compatibility with

various other assemblers. The syntaxes supported are:

.type

name ,#function

.type

name ,#object

.type

name ,@function

.type

name ,@object

.type

name ,%function

.type

name ,%object

.type

name ,"function"

.type

name ,"object"

.type

name

STT_FUNCTION

.type

name

STT_OBJECT

8.95.

.uleb128 expressions

uleb128

stands for "unsigned little endian base 128." This is a compact, variable length representa 

tion of numbers used by the DWARF symbolic debugging format.

.sleb128

.

8.96.

.val addr

This directive, permitted only within

.def

/

.endef

pairs, records the address

addr

as the value at 

tribute of a symbol table entry.

.val

is used only for COFF output; when

as

is configured for

b.out

, it accepts this directive but

ignores it.