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AIX Version 4.3 Assembler Language Reference

## Extended Mnemonics of Fixed-Point Trap Instructions

The extended mnemonics for fixed-point trap instructions incorporate the most useful TO operand values. A standard set of codes, shown in the following table, has been adopted for the most common combinations of trap conditions. These extended mnemonics are in the com assembly mode.

 Fixed-Point Trap Instruction Codes Code TO Encoding Meaning lt 10000 less than le 10100 less than or equal ng 10100 not greater than eq 00100 equal ge 01100 greater than or equal nl 01100 not less than gt 01000 greater than ne 11000 not equal llt 00010 logically less than lle 00110 logically less than or equal lng 00110 logically not greater than lge 00101 logically greater than or equal lnl 00101 logically not less than lgt 00001 logically greater than lne 00011 logically not equal None 11111 Unconditional

The POWER extended mnemonics for fixed-point trap instructions have the following format:

• txx or txxi

where xx is one of the codes specified in the preceding table.

The 64-bit PowerPC extended mnemonics for double-word, fixed-point trap instructions have the following format:

• tdxx or tdxxi

The PowerPC extended mnemonics for fixed-point trap instructions have the following formats:

• twxx or twxxi

where xx is one of the codes specified in the preceding table.

The trap instruction is an unconditional trap:

• trap

### Examples

1. To trap if R10 is less than R20:
`tlt   10, 20`
This is equivalent to:
`t   16, 10, 20`
2. To trap if R4 is equal to 0x10:
`teqi   4, 0x10`
This is equivalent to:
`ti   0x4, 4, 0x10`
3. To trap unconditionally:
`trap`
This is equivalent to:
`tw   31, 0, 0`
4. To trap if RX is not equal to RY:
`twnei   RX. RY`
This is equivalent to:
`twi   24, RX, RY`
5. To trap if RX is logically greater than 0x7FF:
`twlgti   RX, 0x7FF`
This is equivalent to:
`twi   1, RX, 0x7FF`

### Related Information

The tw or t (Trap Word) instruction, twi or ti (Trap Word Immediate) instruction.

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