Miscellaneous I-Unit Instructions; Misc I-Unit 3-Bit Opcode Extensions - Intel ITANIUM ARCHITECTURE - SOFTWARE DEVELOPERS MANUAL VOLUME 3 REV 2.3 Manual

4.3.3.2 Test NaT
40
I17
Instruction
tnat.z
tnat.z.unc
tnat.z.and
tnat.nz.and
tnat.z.or
tnat.nz.or
tnat.z.or.andcm
tnat.nz.or.andcm
4.3.4

Miscellaneous I-Unit Instructions

The miscellaneous I-unit instructions are encoded in major opcode 0 using a 3-bit
opcode extension field (x
(x ) in bits 32:27.
6
the 6-bit assignments.
Table 4-24.
Opcode
Bits 40:37
3:318
37 36 35 34 33 32 27 26
5 t x t p
b 2 a 2
4 1 2 1 6
Operands Opcode
p , p = r
1 2 3
) in bits 35:33. Some also have a 6-bit opcode extension field
3
Table 4-24 shows the 3-bit assignments and

Misc I-Unit 3-bit Opcode Extensions

Bits 35:33
0
20 19 18
r x
3
7 1 5
x t
2 a
0
5 0
1
x
3
0
1
2
3
4
5
6
7
14 13 12 11 6 5
y c p
1
1 1 6
Extension
t y x c
b
0
0
1
0
1
1
1 0
0
0
1
0
1
1
Table 4-25 summarizes
6-bit Ext (Table 4-25)
chk.s.i – int I20
mov to pr.rot – imm I24
44
mov to pr I23
mov to b I21
Volume 3: Instruction Formats
0
qp
6