Chapter 31. MSP 430 Dependent Features

183

bleu label

A polymorph instruction which is

jeq label; jlo label

or

jeq +2; jhs +4; br

label

ble label

A polymorph instruction which is

jeq label; jl label

or

jeq +2; jge +4; br label

jump label

A polymorph instruction which is

jmp label

or

br label

31.3. Floating Point

The MSP 430 family uses ieee 32 bit floating point numbers.

31.4. MSP 430 Machine Directives

.file

This directive is ignored; it is accepted for compatibility with other MSP 430 assemblers.

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

the MSP 430 support.

.line

This directive is ignored; it is accepted for compatibility with other MSP 430 assemblers.

.arch

Currently this directive is ignored; it is accepted for compatibility with other MSP 430 assem 

blers.

.profiler

This directive instructs assembler to add new profile entry to the object file.

31.5. Opcodes

as

implements all the standard MSP 430 opcodes. No additional pseudo instructions are needed on

this family.

For information on the 430 machine instruction set, see [MSP430 User's Manual, document

slau049b], Texas Instrument, Inc.

31.6. Profiling Capability

It is a performance hit to use gcc's profiling approach for this tiny target. Even more   jtag hardware

facility does not perform any profiling functions. However we've got gdb's built in simulator where

we can do anything.