PATH Mac OS X Documentation > Developer Tools > Mac OS X Assembler Guide

Trap Mnemonics

Like the branch-on-condition mnemonics above, the trap operator also has extended mnemonics which encode the numeric TO field as follows:

Code	Meaning	TO encoding
lt	Less than	16
le	Less than or equal	20
eq	Equal	4
ge	Greater than or equal	12
gt	Greater than	8
nl	Not less than	12
ne	Not equal	24
ng	Not greater than	20
llt	Logically less than	2
lle	Logically less than or equal	6
lge	Logically greater than or equal	5
lgt	Logically greater than	1
lnl	Logically not less than	5
lng	Logically not greater than	6
(none)	Unconditional	31

The condition is indicated from the third letter of the extended mnemonics in the table below:

Trap Type	64-bit comparison		32-bit-comparison
	tdi	td	twi	tw
	Immediate	Register	Immediate	Register
unconditional	-	-	-	trap
if less than	tdlti	tdlt	twlti	twlt
if less than or equal	tdlei	tdle	twlei	twle
if equal	tdeqi	tdeq	tweqi	tweq
if greater than or equal	tdgei	tdge	twgei	twge
if greater than	tdgti	tdgt	twgti	twgt
if not less than	tdnli	tdnl	twnli	twnl
if not equal	tdnei	tdne	twnei	twne
if not greater than	tdngi	tdng	twngi	twng
if logically less than	tdllti	tdllt	twllti	twllt
if logically less than or equal	tdllei	tdlle	twllei	twlle
if logically greater than or equal	tdlgei	tdlge	twlgei	twlge
if logically greater than	tdlgti	tdlgt	twlgti	twlgt
if logically not less than	tdlnli	tdlnl	twlnli	twlnl
if logically not greater than	tdlngi	tdlng	twlngi	twlng

Mac OS X Assembler Reference: PowerPC Addressing Modes and Assembler Instructions