74

Chapter 10. AMD 29K Dependent Features

ipb

fc

fps

q

cr

exop

10.3. Floating Point

The AMD 29K family uses ieee floating point numbers.

10.4. AMD 29K Machine Directives

.block size , fill

This directive emits

size

bytes, each of value

fill

. Both

size

and

fill

are absolute expres 

sions. If the comma and

fill

are omitted,

fill

is assumed to be zero.

In other versions of the gnu assembler, this directive is called

.space

.

.cputype

This directive is ignored; it is accepted for compatibility with other AMD 29K assemblers.

.file

This directive is ignored; it is accepted for compatibility with other AMD 29K assemblers.

Warning: in other versions of the gnu assembler, .file is used for the directive called .app file in

the AMD 29K support.

.line

This directive is ignored; it is accepted for compatibility with other AMD 29K assemblers.

.sect

This directive is ignored; it is accepted for compatibility with other AMD 29K assemblers.

.use section name

Establishes the section and subsection for the following code;

section name

may be one of

.text

,

.data

,

.data1

, or

.lit

. With one of the first three

section name

options,

.use

is

equivalent to the machine directive

section name

; the remaining case,

.use .lit

, is the same

as

.data 200

.

10.5. Opcodes

as

implements all the standard AMD 29K opcodes. No additional pseudo instructions are needed on

this family.

For information on the 29K machine instruction set, see [Am29000 User's Manual], Advanced Micro

Devices, Inc.