Freescale Semiconductor PowerPC e500 Core - Trap Instructions Simplified Mnemonics

Simplified Mnemonics for PowerPC Instructions
PowerPC e500 Core Family Reference Manual, Rev. 1
Freescale Semiconductor C-21
Examples using the CR logical mnemonics follow:
1. Set CR[57].
crset 25 equivalent to creqv 25,25,25
2. Clear CR0[SO].
crclr so equivalent to crxor 3,3,3
3. Same as (2), but clear CR3[SO].
crclr 4 * cr3 + so equivalent to crxor 15,15,15
4. Invert the CR0[EQ].
crnot eq,eq equivalent to crnor 2,2,2
5. Same as (4), but CR4[EQ] is inverted and the result is placed into CR5[EQ].
crnot 4 * cr5 + eq, 4 * cr4 + eq equivalent to crnor 22,18,18
C.7 Trap Instructions Simplified Mnemonics
The codes in Table C-25 have been adopted for the most common combinations of trap conditions.
Table C-25. Standard Codes for Trap Instructions
Code Description TO Encoding < > = <U
1
1
The symbol ‘<U’ indicates an unsigned less-than evaluation is performed.
>U
2
2
The symbol ‘>U’ indicates an unsigned greater-than evaluation is performed.
ltLess than 16 10000
le Less than or equal 20 10100
eqEqual 4 00100
ge Greater than or equal 12 01100
gtGreater than 8 01000
nlNot less than 12 01100
ne Not equal 24 11000
ngNot greater than 20 10100
lltLogically less than 2 00010
lle Logically less than or equal 6 00110
lge Logically greater than or equal 5 00101
lgtLogically greater than 1 00001
lnlLogically not less than 5 00101
lngLogically not greater than 6 00110
— Unconditional 31 11111