GXLV Datasheet, PDF (225/247 Pages) National Semiconductor (TI) – Geode™ GXLV Processor Series Low Power Integrated x86 Solutions

Instruction Set (Continued)
Table 8-27. Processor Core Instruction Set Summary (Continued)
Flags
Real Prot’d Real Prot’d
Mode Mode Mode Mode
Instruction
Opcode
CMOVS Move if Sign
Register, Register/Memory
CMOVNS Move if Not Sign
Register, Register/Memory
CMP Compare Integers
Register to Register
Register to Memory
Memory to Register
Immediate to Register/Memory
Immediate to Accumulator
CMPS Compare String
CMPXCHG Compare and Exchange
Register1, Register2
Memory, Register
CMPXCHG8B Compare and Exchange 8 Bytes
CPUID CPU Identification
CPU_READ Read Special CPU Register
CPU_WRITE Write Special CPU Register
CWD Convert Word to Doubleword
CWDE Convert Word to Doubleword Extended
DAA Decimal Adjust AL after Add
DAS Decimal Adjust AL after Subtract
DEC Decrement by 1
Register/Memory
Register (short form)
DIV Unsigned Divide
Accumulator by Register/Memory
Divisor: Byte
Word
Doubleword
ENTER Enter New Stack Frame
Level = 0
Level = 1
Level (L) > 1
HLT Halt
IDIV Integer (Signed) Divide
Accumulator by Register/Memory
Divisor: Byte
Word
Doubleword
IMUL Integer (Signed) Multiply
Accumulator by Register/Memory
Multiplier: Byte
Word
Doubleword
Register with Register/Memory
Multiplier: Word
Doubleword
Register/Memory with Immediate to Register2
Multiplier: Word
Doubleword
IN Input from I/O Port
Fixed Port
Variable Port
INS Input String from I/O Port
0F 48 [mod reg r/m]
0F 49 [mod reg r/m]
3 [10dw] [11 reg r/m]
3 [101w] [mod reg r/m]
3 [100w] [mod reg r/m]
8 [00sw] [mod 111 r/m] ###
3 [110w] ###
A [011w]
0F B [000w] [11 reg2 reg1]
0F B [000w] [mod reg r/m]
0F C7 [mod 001 r/m]
0F A2
0F 3C
0F 3D
99
98
27
2F
F [111w] [mod 001 r/m]
4 [1 reg]
F [011w] [mod 110 r/m]
C8 ##,#
F4
F [011w] [mod 111 r/m]
F [011w] [mod 101 r/m]
0F AF [mod reg r/m]
6 [10s1] [mod reg r/m] ###
E [010w] #
E [110w]
6 [110w]
O D I T S Z A P C Clock Count
F F F F F F F F F (Reg/Cache Hit)
Issues
---------
1
1
r
---------
1
1
r
x- - - xxxxx
1
1
1
1
1
x- - - xxxxx
6
1
b
h
1
1
1
1
6
b
h
x- - - xxxxx
6
6
6
6
---------
---------
12
12
1
1
1
1
---------
2
2
---------
3
3
- - - - xxxxx
2
2
- - - - xxxxx
2
2
x- - - xxxx-
1
1
1
b
h
1
- - - - xxuu-
20
29
45
b,e
e,h
20
29
45
---------
13
13
b
h
17
17
17+2*L 17+2*L
---------
10
10
l
- - - - xxuu-
20
29
45
b,e
e,h
20
29
45
x- - - xxuux
b
h
4
4
5
5
15
15
5
5
15
15
6
6
16
16
---------
8
8/22
m
8
8/22
---------
11 11/25 b
h,m
Revision 1.1
225
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